Sci-Hub

1782043155

Star performers: task and contextual performance are components, but are they enough?

Asia Pacific Journal of Human Resources, 2013

Identifying outstanding performers or ‘stars’ is a critical component of managing talent. However, organizational effectiveness in this area is limited by the current lack of guidance about the behaviour and characteristics of stars. We address this gap by combining a conceptual analysis with an empirical study involving 174 managers. Conceptually we examine the alignment of managers’ perceptions of outstanding performance with the well established task and contextual performance model and find this framework accounts for a core element in managers’ judgments about outstanding performers. However, a second, more qualitative approach finds that other dimensions including being self-directed, and a willingness to lead are also important. Our findings a...

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Multi-criteria active deep learning for image classification

Knowledge-Based Systems, 2019

As a robust and heuristic technique in machine learning, active learning has been established as an effective method for addressing large volumes of unlabeled data; it interactively queries users (or certain information sources) to obtain desired outputs at new data points. With regard to deep learning techniques (e.g., CNN) and their applications (e.g., image classification), labeling work is of great significance as training processes for obtaining parameters in neural networks which requires abundant labeled samples. Although a few active learning algorithms have been proposed for devising certain straightforward sampling strategies (e.g., density, similarity, uncertainty, and label-based measure) for deep learning algorithms, these employ onefold samplin...

1782043155

Induction of the unfolded protein response (UPR) during Marek's disease virus (MDV) infection

Virology, 2018

Marek's disease (MD) is a pathology of chickens associated with paralysis, immune suppression, and the rapid formation of T-cell lymphomas. MD is caused by the herpesvirus, Marek's disease virus (MDV). We examined endoplasmic reticulum (ER) stress and the activation of unfolded protein response (UPR) pathways during MDV infection of cells in culture and lymphocytes in vivo. MDV strains activate the UPR as measured by increased mRNA expression of GRP78/BiP with concomitant XBP1 splicing and induction of its target gene, EDEM1. Cell culture replication of virulent, but not vaccine MDVs, activated the UPR at late in infection. Pathotype-associated UPR activation was induced to a greater level by a vv + MDV. Discrete UPR activation was observed during MDV in viv...

1782043155

A phenomenological constitutive model for magnetostrictive materials and ferroelectric ceramics

Proc Appl Math and Mech, 2008

The contribution is concerned with a thermodynamic consistent constitutive model for magnetostrictive materials and ferroelectric ceramics. It captures the nonlinear phenomenological behavior which is described by hysteresis effects. Magnetostrictive alloys and ferroelectric ceramics belong to the multifunctional materials. In recent years these materials have become widely–used in actor and sensor applications. They characterize an inherent coupling between deformation and magnetic or electric field. Due to the similarities of the coupled differential equations a uniform approach is applied for both phenomena. The presented three–dimensional material model is thermodynamically motivated. It is based on the definition of a specific free energy function a...

1782043155

Magnetic properties of upper Paleozoic loessite-paleosol couplets in the Western USA: The role of pedogenic hematite in magnetic enhancement

Quaternary International, 2020

The sequence of loessite-paleosol couplets in the Western USA consists of more than 700 m of lithified loessite with more than 200 m of paleosols which are interpreted as Protosols or Argillisols. The sequence provides one of the highest resolution terrestrial records of late Paleozoic climate. Several previous investigations have suggested that the magnetic susceptibility enhancement model of the loessite is similar to that of the loess of the Chinese Loess Plateau, since the concentration of fine-grained superparamagnetic (SP) magnetite is higher in the paleosols than in the parent material. However, this is not evident in all sequences, and in some cases hematite, rather than magnetite, dominates the high-field magnetic behavior. In this study, four soil ...

1782043155

Replication of elite music performance enhancement following alpha/theta neurofeedback and application to novice performance and improvisation with SMR benefits

Biological Psychology, 2014

Alpha/theta (A/T) and sensory-motor rhythm (SMR) neurofeedback were compared in university instrumentalists who were novice singers with regard to prepared and improvised instrumental and vocal performance in three music domains: creativity/musicality, technique and communication/presentation. Only A/T training enhanced advanced playing seen in all three domains by expert assessors and validated by correlations with learning indices, strongest with Creativity/Musicality as shown by Egner and Gruzelier (2003). Here A/T gains extended to novice performance – prepared vocal, improvised vocal and instrumental – and were recognised by a lay audience who judged the prepared folk songs. SMR learning correlated positively with Technical Competence and Communicat...

1782043155

Pituitary-Adrenal Response to Ether Vapor in the Weanling Animal: Characterization of the Inhibitory Effect of Glucocorticoids on Adrenocorticotropin Secretion

Pediatr Res, 1993

The hypothalamic-pituitary-adrenal axis is hyporesponsive to stimuli during early life in the rat. Once the adrenocortical response is established, failure to terminate the corticosterone (B) rise is evident after certain stressors, such as ether. The purpose of this study was 2-fold: 1) to investigate the B and ACTH response to ether vapor in young animals and 2) to test the ability of glucocorticoids to inhibit the ether ACTH-stimulated secretion in weanling animals. Rats aged 14, 18, and 25 d and adult rats were subjected to ether vapor for 3 min. Plasma was collected for B and ACTH determination by RIA at 0, 5, 15, 30, 60, and 120; min after ether exposure. Maximum B levels were observed at different times after exposure: 15 min in the adult and 30 min i...

1782043155

Hypothyroidism in Older Adults: A Narrative Review

EMIDDT, 2024

The prevalence of hypothyroidism increases along with aging, resulting in one of the most common comorbidities among patients over 75 years. The leading causes of hypothyroidism in older adults are iatrogenic, Hashimoto's thyroiditis, and medications. The narrative review aimed to discuss the clinical characteristics of hypothyroidism in older adults and the impact of hormonal replacement therapy on survival rates. Thyroid function declines over time due to physiological changes in the thyroid stimulating hormone signaling, iodine absorption and metabolism, thyroid hormone metabolism, and activity at peripheral sites. A serum TSH value over the upper limit of the normal reference range is not necessarily attributable to hypothyroidism. However, an appropriat...

1782043155

Immunohistochemistry improves histopathologic diagnosis in primary aldosteronism

J Clin Pathol, 2013

Background In primary aldosteronism (PA) the main source of aldosterone hypersecretion is an aldosterone-producing adenoma (APA) or a bilateral hyperplasia. Histopathology of the adrenal gland from patients with PA has been difficult, as there are no morphological criteria to ascertain which are the cells that produce aldosterone. We therefore applied new specific antibodies to explore which cells in the adrenal contain the enzymes for aldosterone and cortisol production, respectively. Methods Adrenals from 24 patients with PA were studied. After routine preparation, consecutive sections were stained with antibodies for CYP11B1 (cortisol) and CYP11B2 (aldosterone) enzymes. Results APA had a strong immunoreactivity for CYB11B2. In a...

1782043155

Local and systemic control in Ewing’s sarcoma of the femur treated with chemotherapy, and locally by radiotherapy and/or surgery

The Journal of Bone and Joint Surgery. British volume, 2003

The role of radiotherapy and/or surgery in the local treatment of Ewing’s sarcoma has still to be determined. The outcome of Ewing’s sarcoma may differ according to its location and a selection bias towards surgery limits the ability to compare methods of local treatment. We have carried out a retrospective review of 91 consecutive patients treated for non-metastatic Ewing’s sarcoma of the femur. They received chemotherapy according to four different protocols. The primary lesion was treated by surgery alone (54 patients), surgery and radiotherapy (13) and radiotherapy alone (23). One was treated by chemotherapy alone. At a median follow-up of ten years, 48 patients (53%) remain free from disease, 39 (43%) have relapsed, two (2%) have died from chemoth...

1782043155

Theory of the nitrogen laser excited by a relativistic electron beam

IEEE J. Quantum Electron., 1975

The 3371-Å nitrogen laser power produced by a relativistic electron beam propagating into nitrogen gas is calculated. The excitation contribution of cascade electrons is found to be negligible, compared to the excitation caused by plasma electrons drifting in the inductive electric field produced by the beam. The extensive experimental data on nitrogen are used wherever possible in the calculation, and the sensitivity of the calculation to the various input data is given. The mechanism of excitation by plasma electrons alone yields agreement within experimental uncertainty for such parameters as the peak laser power, the laser pulsewidth and delay, and the dependence of the laser power on gas pressure. For a larger drift tube radius, the plasma electron mec...

1782043155

Physically inactive adolescents’ experiences of engaging in physical activity

European Journal of Physiotherapy, 2019

Purpose: This study aimed to describe physically inactive adolescents’ experiences and reflections about engaging in physical activity.Methods: Nine graduate students from the third year of upper secondary school (six women and three men) participated in this study. Narrative interviews were used for data collection and qualitative content analysis was used to analyse the interviews.Results: The analysis revealed three themes ‘Acknowledging resistance and barriers to performing physical activity’, ‘Knowing that it is good is not enough’, and ‘Feeling included and accepted is fun and motivating’. These themes show that the adolescent’s experienced barriers, acknowledged pros and cons and identified possibilities to be physically active.Conclus...

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Preparation and Characterization of Novel Nano-ZnO/Polystyrene Resin Composite

AMR, 2012

A nano-ZnO/polystyrene resin composite was prepared by adsorption nano-ZnO predecessor (Zn2+) onto macroporous strong acid cation exchange resin, denoted as D001, followed by chemical precipitation. The framework FT-IR spectrums showed new adsorption bands at ca. 1615 cm-1 and ca. 530 cm-1 were observed in ZnO@D001 compared to D001, and vibration peak shift in D001 was found from 1001 cm-1 to 1080 cm-1 in ZnO@D001. The specific surface area declined a litte, but pore volume and average pore diameter declined a lot when nano-ZnO immobilized onto D001. All of above results demonstrated the nano-ZnO particles immobilized on the inner nano-pores/channels of D001 successfully. The coefficient of volume and surface resistance (ρV, ρS) values of ZnO@D001 were low...

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A Mindfulness-Based Compassionate Living Training in a Heterogeneous Sample of Psychiatric Outpatients: a Feasibility Study

Mindfulness, 2016

We developed a novel compassion-focused training (mindfulness-based compassionate living; MBCL) and examined its effects in a heterogeneous psychiatric outpatient population with regard to feasibility and changes in levels of depression, anxiety, mindfulness and compassion. The training consisted of nine weekly 2.5-h sessions. Thirty-three patients, who had followed a mindfulness-based stress reduction (MBSR) program or a mindfulness-based cognitive therapy (MBCT) program beforehand, participated in the study (mean age 48.1 years; 82 % female). Participants completed self-report questionnaires before and directly after the MBCL training. Levels of depression, but not of anxiety, reduced, and levels of mindfulness and self-compassion increased. Serious limita...

1782043155

Palladaphosphacyclobutenes as catalysts in Heck and Suzuki reactions

Applied Organom Chemis, 2008

Heck reactions of aryl halides with various olefins and Suzuki reactions of aryl halides with phenylboronic acid catalyzed by palladaphosphacyclobutene have been investigated. The scope of the Heck reaction has been investigated in N,N-dimethylacetamide at 140 °C using NaOAc as base. Using 0.1% molar ratio of palladaphosphacyclobuyenes, aryl bromides were converted into 1,2-substitutedethene products in good to high yields through coupling with both vinylarenes and acrylates. Actived aryl chloride reacted with styrene to afford 1,2-substitutedethene products in moderate yields. The scope of the Suzuki reaction has been conducted in toluene at 110 °C using Cs2CO3 as base. Using 0.1% molar ratio of palladaphosphacyclobutene, aryl bromides reacted with phenyl...

1782043155

Quantum size effects on chemisorption properties: CO on ultrathin Cu films from first principles

Phys. Rev. B, 2011

We address, by means of ab initio calculations, the origin of the correlation that has been observed experimentally between the chemisorption energy of CO on nanoscale Cu(001) supported films and quantum-size effects. The calculated chemisorption energy shows systematic oscillations, as a function of film thickness, with a periodicity corresponding to that of quantum-well states at $\overline{\ensuremath{\Gamma}}$ crossing the Fermi energy. We explain this trend based on the oscillations, with film thickness, of the decay length on the vacuum side of the quantum-well states at the Fermi energy. Contrary to previous suggestions, we find that the actual oscillations with film thickness of the density of states per atom of the film at the Fermi energy cannot ac...

1782043155

Subcortical aphasia

Neurology, 1995

Article abstract-Numerous reports of aphasia after subcortical lesions have produced incomplete agreement about basic clinico-anatomic correlations. Some disagreement has arisen from methodologic differences. To control for some of the common differences, we analyzed 13 patients with left putaminal hemorrhage controlled for location--subcortical but not thalamic, and for time postonset--studied in both acute and postacute epochs. There was no apparent correlation between lesion site and acute language profiles. During the postacute epoch, there were several distinct correlations between lesion site (postacute decreased CT density) and specific aphasia dimensions--nonfluency, impaired comprehension, and perhaps impaired repetition. Our correlations were compa...

1782043154

Electrodeposition of Ni‐Zn Alloy: II . Electrocrystallization of Zn, Ni, and Ni‐Zn alloy

J. Electrochem. Soc., 1993

The initial stages of the electrodeposition of nickel, zinc, and nickel-zinc alloy were investigated by nucleation analysis. A novel deconvolution technique was applied to obtain the individual chronoamperometry of each species and elucidate the nucleation and growth mechanisms of nickel-zinc alloy deposition. In agreement with earlier conclusions (part 1 of this study), codeposition of hydrogen and nickel occurs in the initial stage of deposition. Adsorption and evolution of hydrogen are significant and cause the enhancement of nickel content. From the deconvoluted chronamperograms of nickel-zinc deposition, one sees that the nucleation and growth mechanism of the alloy is similar to that of the pure metals (i.e., nickel or zinc). This similarity implies a ...

1782043154

Effects of Solution and Ageing Treatment Process on the Microstructure and Properties of AZ80 Magnesium Alloy

AMR, 2011

In this study, the comprehensive performance of AZ80 magnesium alloy was improved by solution treatment and multi-step ageing treatment. The effects of different thermal processing parameters on the microstructure and mechanical properties of AZ80 magnesium alloy were studied. The experimental results show that the optimal process of solution treatment for AZ80 alloy is heated at 420°C for 5h, which the β phase dissolve thoroughly into the α substrate. After first-stage ageing treatment, the hardness of samples varied as the ageing temperature, and had higher hardeness at temprature 180°C. While in the second-stage ageing treatment, the sample got the ageing peak value at 210°C for 10h. After two-stage treatment, the grains of AZ80 magnesium alloy becam...

1782043154

Behavioural and Physiological Aspects of Nurse Bees in Relation to the Composition of Larval Food During Caste Differentiation in the Honeybee

Journal of Apicultural Research, 1987

SummaryThe behaviour of nurse bees provisioning honeybee (Apis mellifera) brood cells was studied by using video equipment to make long-terra recordings of individual queen and worker larvae from hatching until the brood cell was sealed. The contents of water, sugars, proteins, lipids and free amino acids were determined for larval food collected from brood cells containing drone, worker or queen larvae.The feeding pattern of queen larvae hardly altered during their development; most feedings occurred during relatively short (

1782043154

The incompressible non-relativistic Navier-Stokes equation from gravity

J. High Energy Phys., 2009

We note that the equations of relativistic hydrodynamics reduce to the incompressible Navier-Stokes equations in a particular scaling limit. In this limit boundary metric fluctuations of the underlying relativistic system turn into a forcing function identical to the action of a background electromagnetic field on the effectively charged fluid. We demonstrate that special conformal symmetries of the parent relativistic theory descend to `accelerated boost' symmetries of the Navier-Stokes equations, uncovering a possibly new conformal symmetry structure of these equations. Applying our scaling limit to holographically induced fluid dynamics, we find gravity dual descriptions of an arbitrary solution of the forced non-relativistic incompressible Navier-Stokes ...

1782043154

An evolutionary approach of multicriteria manufacturing cell formation

International Transactions in Operational Research, 1998

Several approaches to designing cellular manufacturing systems exist, but they are generally based on the optimization of a single criterion, such as the minimization of the inter-cell movement or the total cost. Unfortunately, in practice, it is often necessary to take into account multiple criteria. We present an approach based on a niched pareto evolutionary algorithm which does not rely on weights or distances to a target solution. The suggested method allows several solutions to be provided, so that a choice is offered to the decision maker, according to his/her particular constraints. A new recombination operator is also presented. This approach is illustrated on a cell formation problem using two criteria: the cell workload and the traffic between cel...

1782043154

Molecular Epidemiology of Vancomycin-Resistant Enterococcus Faecalis Among Patients of Transplantology Wards

Transplantation Proceedings, 2009

Vancomycin-resistant enterococci (VRE) require epidemiological monitoring especially in transplantation wards. The aim of our work was to perform a molecular analysis of vancomycin-resistant Enterococcus faecalis (VREfl) strains among solid organ recipients during various years.Strains were examined for the presence of different genes determining vancomycin resistance: vanA, vanB, vanD, or vanG by polymerase chain reaction (PCR). Restriction fragment length polymorphism (RFLP)-pulsed field gel electrophoresis (PFGE) was performed on bacterial DNA digested with SmaI enzyme.From 2003 to 2006, we isolated 12 strains of VREfl from 8 patients (2 liver and 6 kidney transplantations). All strains harbored the vanA gene. Among the strains, 5 displayed patterns simil...

1782043154

Effect of Multiple Injection Strategies on the Spray Atomization and Reduction of Exhaust Emissions in a Compression Ignition Engine Fueled with Dimethyl Ether (DME)

Energy Fuels, 2010

This experimental research paper presents the effect of multiple injection strategies on the neat dimethyl ether (DME) fuel atomization and reduction of exhaust emission characteristics within a compression ignition (CI) engine. Pilot and split injections under various injection mass (minj) and timing (tinj) conditions as a multiple injection strategies were applied to reveal its effect on the improvement of spray atomization and the reduction of exhaust emissions in terms of spray tip penetration, Sauter mean diameter (SMD), rate of heat release (ROHR), indicated mean effective pressure (IMEP), and generation of exhaust emissions (such as CO, HC, NOX, and soot). These experimental results were then compared with those from diesel fuel cases. It was revealed...

1782043154

Therapeutic challenges and clinical characteristics of single-sided deafness in children

International Journal of Pediatric Otorhinolaryngology, 2020

The clinical implications of single-sided deafness (SSD) in children has historically been underappreciated by patients and providers alike, despite a large body of literature on the wide-ranging neurocognitive, language, scholastic, and functional impairments that occur. Conventional amplification options are marked by variable results and frequent loss of follow-up. Retrospective case series for pediatric SSD from 2008 to 2018. 88 children with congenital SSD were identified. Seventeen (N = 17/88, 23.9%) passed their newborn hearing screen. Median age at first otolaryngology evaluation was 0.65 years (range 0.1–16.9 years). Most common etiologies included cochlear nerve deficiency (N = 39, CND, 44.3%), unknown (N = 30, 35.2%), inner ear malformation (N =...

1782043154

Effect of diet limitation on the development of diabetes in prediabetic Chinese hamsters

Diabetologia, 1974

Prediabetic Chinese hamsters born of two ketonuric diabetic parents were hyperphagic from birth. Carcass lipids and total solids were increased but plasma and pancreatic insulin were not, suggesting that hyperphagia was not due to hyperinsulinism. Hyperphagia was controlled by diet limitation of prediabetic pups. Diet limitation for the weaning period only did not alter development of diabetes, but diet limitation for the first 150 days significantly reduced onset and severity. These 150 day diet-limited prediabetics were switched to nonrestricted feeding and subsequently developed mild diabetes. Prediabetic siblings, fedad libitum, developed glucosuria and ketonuria, and died prematurely compared with diet-limited siblings. Prediabetics limited to a normal ...

1782043154

Management of next-generation energy using a triple bottom line approach under a supply chain framework

Resources, Conservation and Recycling, 2019

Abstract Researchers have raised concerns that it is very essential to concentrate on sustainable and renewable energy resources to control the elevated level of global warming, which is a result of the enormous usage of fossil fuels. Biofuel is considered as an alternative solution for non-renewable sources for energy production. The assurance of this supply relies on a sustainable and efficient supply chain. For this study, a multi-objective model is proposed to structure a sustainable supply chain for second-generation biofuel under a triple bottom line approach. The proposed model captures a trade-off among conflicting objectives. The multiple agricultural regions, multiple biorefineries, transportation, and multiple markets are considered. The yield of ...

1782043154

Distribution of vancomycin resistant enterococci and their resistance patterns determined by surveillance

Afr. J. Microbiol. Res., 2014

In order to identify the status of vancomycin resistant enterococi (VRE) carrier in our hospital, periodical rectal swab cultures were obtained from the patients hospitalized in the Pediatrics Unit, Neurosurgery Intensive Care Unit and Reanimation Unit. VRE strains isolated were examined for type identification, antibiotic sensitivity, High Level Gentamicin Resistance (HLGR), High Level Streptomycin Resistance (HLSR), beta-lactamase production and genotypic resistance patterns. Rectal swab cultures were obtained from 250 patients and 38 of these (15%) were VRE positive. 28 (73.6%) of the enterococci were Enterococcus faecium, 6 (15.8%) were Enterococcus casseliflavus, 3 (7.9%) were Enterococcus gallinarum and 1 (2.7%) was Enterococcus faecalis. 24 strains we...

1782043154

Functional mapping of the rat brain during drinking behavior: A fluorodeoxyglucose study

Physiology & Behavior, 1993

Autoradiographic techniques using the radiolabeled glucose analog [14C]2-fluoro-2-deoxy-D-glucose (FDG) were used to map the functional activity in the CNS during drinking behavior. Rats were trained to drink water during a 1-h session each day. Half of the rats were injected with FDG and allowed to drink, while the other half were satiated prior to FDG injection. Uptake of FDG for drinking and control groups of rats was quantified in 60 brain structures from frontal cortex to cervical spinal cord. The largest percent increase in activity (96%) during drinking was in the lateral hypothalamus. Limbic structures with significant metabolic increases included the lateral septum (48%), lateral habenula (44%), and nucleus accumbens (32%). Thalamic nuclei activated...

1782043154

Evolutionary Insights Based on SNP Haplotypes of Red Pericarp, Grain Size and Starch Synthase Genes in Wild and Cultivated Rice

Front. Plant Sci., 2017

The origin and domestication of rice has been a subject of considerable debate in the post-genomic era. Rice varieties have been categorized based on isozyme and DNA markers into two broad cultivar groups, Indica and Japonica. Among other well-known cultivar groups Aus varieties are closer to Indica and Aromatic varieties including Basmati are closer to Japonica, while deep-water rice varieties share kinship to both Indica and Japonica cultivar groups. Here, we analyzed haplotype networks and phylogenetic relationships in a diverse set of genotypes including Indian Oryza nivara/Oryza rufipogon wild rice accessions and representative varieties of four rice cultivar groups based on pericarp color (Rc), grain size (GS3) and eight different starch synthase genes...

1782043154

Metallic tribological compatibility of laser clad Mo2Ni3Si/NiSi metal silicide coatings

Surface and Coatings Technology, 2005

Abstract Novel wear-resistant Mo 2 Ni 3 Si reinforced metal silicide coatings were fabricated on a substrate of austenitic stainless steel AISI 321 by laser cladding with Mo–Ni–Si alloy powders. Microstructure of the coating was characterized by optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDS). Wear resistance of the coatings was evaluated under block-on-wheel dry sliding wear test condition at room temperature. Results indicate that the coatings have excellent wear resistance and tribological compatibility to a metallic counterpart under dry sliding wear test conditions coupling with conventional metallic materials because of the high hardness and strong atomic bonds of the t...

1782043154

Cascading failure analysis and restoration strategy in an interdependent network

J. Phys. A: Math. Theor., 2016

In modern society, many infrastructures are interdependent owing to functional and logical relations among components in different systems. These networked infrastructures can be modeled as interdependent networks. In the real world, different networks carry different traffic loads whose values are dynamic and stem from the load redistribution in the same network and disturbance from the interdependent network. Interdependency makes interdependent networks so fragile that even a slight initial disturbance may lead to a cascading failure of the entire systems. In this paper, interdependencies among networks are modeled and a failure cascade process is studied considering their effects on failure propagation. Meanwhile, an in-process restoration strategy after...

1782043154

Levels of calcium and soluble collagen in turkey egg shell membranes

Comparative Biochemistry and Physiology Part A: Physiology, 1988

1. This experiment examined the effect of weeks in egg production and type of housing confinement of turkey hens on calcium and soluble collagen levels in egg shell membranes; and discussion was given to their apparent relationship to gas exchange in turkey eggs. 2. The high level of acid-soluble collagen in inner and outer egg shell membranes of aging caged hens compared with the same aged floor-penned hens may have a relationship with the low hatchability generally recognized in caged hens. 3. The levels of calcium found in the outer shell membrane are low and appeared to decrease with the age of the hen. 4. There were no differences over time in levels of total collagen and neutral salt-soluble collagen (newly formed collagen) found in egg shell membranes...

1782043154

Isolation of giant DNA fragments from flow‐sorted human chromosomes

Cytometry, 1990

We have established a method using a conventional cell sorter equipped with a single argon laser to sort intact human chromosomes that can be used as a source for the production of giant DNA fragments. Various improvements were made to both the equipment and sorting method to enhance the sorting resolution and avoid destruction of chromosomal DNA. Using this improved method chromosomes 21 and 22 were sorted from the B-lymphoblastoid line GM00130B, digested with the rare cutting restriction endonuclease NotI, and analyzed by pulsed field gel electrophoresis followed by Southern hybridization using the Alu repetitive sequence as a probe. More than 25 discrete NotI giant DNA fragments ranging from 50 kb to longer than 2.5 Mb were separated and the size distribu...

1782043154

White Fright: The politics of white youth identity in South Africa

British Journal of Sociology of Education, 2001

In the 1990s, 'whiteness' in South Africa was open to multiple rearticulations. As white is politically (although not necessarily economically) unhinged from a position of privilege, it finds new paths and trajectories to follow. In this article, I examine how white students at a predominantly black high school in Durban remake and resuscitate whiteness. Using the strategy of resentment, white students negate and dismiss both the historical and contemporary position of their black classmates, instead recentring themselves as victims. As they survey their lives and futures, white students also plot routes of escape out of South Africa, taking refuge in a global whiteness that has many different facets. As white students elude and evade the boundaries of the n...

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Predicting anti-androgenic activity of bisphenols using molecular docking and quantitative structure-activity relationships

Chemosphere, 2016

Both in vivo and in vitro assay indicated that bisphenols can inhibit the androgen receptor. However, the underlying antagonistic mechanism is unclear. In this study, molecular docking was employed to probe the interaction mechanism between bisphenols and human androgen receptor (hAR). The binding pattern of ligands in hAR crystal structures was also analyzed. Results show that hydrogen bonding and hydrophobic interactions are the dominant interactions between the ligands and hAR. The critical amino acid residues involved in forming hydrogen bonding between bisphenols and hAR is Asn 705 and Gln 711. Furthermore, appropriate molecular structural descriptors were selected to characterize the non-bonded interactions. Stepwise multiple linear regressions (MLR) a...

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Analyses of microRNAs and transcriptomes in the midgut of Spodoptera litura feeding on Brassica juncea

Insect Science, 2020

Spodoptera litura is a destructive agricultural pest in tropical and subtropical areas. Understanding the molecular mechanisms of S. litura adaptation to its preferred host plants may help identify target genes useful for pest control. We used high-throughput sequencing to characterize the expression patterns of messenger RNAs (mRNAs) and microRNAs (miRNAs) in the midgut of S. litura fed on Brassica juncea for 6 h and 48 h. A total of 108 known and 134 novel miRNAs were identified, 29 miRNAs and 237 mRNAs were differentially expressed at 6 h of B. juncea feeding, 26 miRNAs and 433 mRNAs were differentially expressed at 48 h. For the mRNAs, the up-regulated genes were mostly enriched in detoxification enzymes (cytochrome P450, esterase, glutathione S-transfer...

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Mutagenicity studies on two triphenylmethane dyes, bromophenol blue and tetrabromophenol blue

J of Applied Toxicology, 1992

Bromophenol blue and tetrabromophenol blue are two triphenylmethane dyes. Triphenylmethane derivatives and their structurally related compounds, such as fluoresceins and xathenes, are widely used as industrial dyes for foods, drugs, cosmetics, textiles, printing inks or laboratory indicators. Since a number of these types of dyes have been reported to be genotoxic, safety concerns on these two dyes of interest have been raised. Consequently, a battery of genetic toxicology assays, including the Ames Salmonella/microsome assay, L5178Y TK+/− mouse lymphoma assay, mouse micronucleus test and mitotic recombination assay with yeast Saccharomyces cerevisiae strain D5, has been performed on each of the two dyes. The results of the evaluations indicate that both b...

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A new successful therapy for fetal chylothorax by intrapleural injection of maternal blood

Ultrasound in Obstet & Gyne, 2003

We present two cases of fetal chylothorax and hydrops diagnosed at 20 weeks' gestation, both of which underwent successful intrauterine treatment. In Case 1, a transient, near total resolution began 2 weeks after an iatrogenic hemothorax following a second thoracocentesis performed at 24 + 6 weeks. Because of pleural fluid reaccumulation, a Cesarean section was performed at 36 weeks. The 3805-g female neonate was admitted to neonatal intensive care but was discharged 50 days later in a healthy condition. In Case 2, resolution occurred after a third thoracocentesis and a second pleural injection of maternal blood, performed at 26 weeks. A 2660-g female neonate was delivered vaginally at 38 weeks. The infant remained asymptomatic and was discharged aged 4 days...

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Regulation of Tetralin Biodegradation and Identification of Genes Essential for Expression of thn Operons

J Bacteriol, 2004

The tetralin biodegradation genes of Sphingomonas macrogolitabida strain TFA are clustered in two closely linked and divergent operons. To analyze expression of both operons under different growth conditions, transcriptional and translational gene fusions of the first genes of each operon to lacZ have been constructed in plasmids unable to replicate in Sphingomonas and integrated by recombination into the genome of strain TFA. Expression analysis indicated that the transcription of both genes is induced in similar ways by the presence of tetralin. Gene expression in both operons is also subjected to overimposed catabolic repression. Two additional genes named thnR and thnY have been identified downstream of thnCA3A4 genes. ThnR is similar to LysR-type regula...

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Are we safe inside? Indoor air quality in relation to outdoor concentration of PM10 and PM2.5 and to characteristics of homes

Sustainable Cities and Society, 2019

This study investigates the relationship between concentrations of particulate matter (PM10 and PM2.5) outdoors and indoors, and evaluates the significance of various factors which may influence levels of particle pollution inside homes. Twenty-four hour measurements of the concentrations of PM10 and PM2.5 were carried out in 179 locations in Krakow, simultaneously indoors and outdoors, using personal aerosol monitors. Data about the characteristics of homes where measurements were conducted were collected by a questionnaire. Even though daily average outdoor levels of PM10 and PM2.5 were higher than indoor levels (p < 0.001), a strong, statistically significant correlation was found between outside and inside concentrations of both PM10 (r = 0.78, p < 0.001...

1782043154

The Air Transport of Lead Compounds Present in Automobile Exhaust Gases

American Industrial Hygiene Association Journal, 1968

Abstract The movement of particulate lead compounds from the exhausts of gasoline-driven motor vehicles on a heavily travelled high-speed roadway (120,000 vehicles/24 hours) is under investigation in the Cincinnati area. The findings for the first year of the investigation indicate an average concentration of 7.8 micrograms/m3 at the roadway, 1.7 micrograms/m3 1300 feet to the leeward, and 1.1 micrograms/m3 at the station, 11000 feet leeward of the source of the lead. The concentration of lead in the air at the latter station is approximately the same as that of six years ago, as reported in the Public Health Service Publication No. 999-AP-12. The mass median equivalent diameter of the lead particles was found to be approximately 0.30 micron, with 70% of the...

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Expectations of healthcare personnel from infection prevention and control services for preparedness of healthcare organisation in view of COVID-19 pandemic

Medical Journal Armed Forces India, 2021

During infectious outbreaks like COVID-19, it is essential that every healthcare personnel (HCP) strictly adheres to infection prevention and control (IPC) policies. To boost IPC measures, training to reinforce preventive practices, which are pertinent to needs and encompass the expectations of the HCP, is indispensable. Thus, these expectations of the HCP should be explored.In this cross-sectional descriptive survey, we used convenience sampling technique to ask the participants to list their expectations on of covid-19 IPC training paper based forms. Using the category construction approach, we organised the expectations and grouped the participants on the basis of their work and place of work to analyse the association using the chi-square test.Many parti...

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Whiting Up: Whiteface Minstrels and Stage Europeans in African American Performance

Journal of American History, 2012

This study of whiteface minstrelsy and the performers (the stage Europeans in the title) who appropriated “white dramatic characters crafted initially by white dramatists and, later, by black playwrights” explores the careers and contributions of African American actors, singers, dancers, comedians, playwrights, and performers in many media who challenged American cultural stereotypes in theater and popular entertainment from the eighteenth through the twenty-first centuries (p. 1). Marvin McAllister investigates the “dual Afro-Diasporic tradition of whiteface minstrels and stage Europeans that … operated for centuries just beneath America's representational radar” and allowed African Americans to “reach beyond traditional artistic practices to p...

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Listeria monocytogenes in ready-to-eat vacuum and modified atmosphere packaged meat and fish products of Estonian origin at retail level

Food Control, 2016

The prevalence, counts and genetic diversity of Listeria monocytogenes in ready-to-eat (RTE) vacuum and modified atmosphere packaged meat and fish products was studied in Estonia. Within two consecutive years 370 RTE food samples were collected at retail level from which 11% were found to be positive for L. monocytogenes. Contamination was higher among RTE fish products (17%) than in RTE meat products (6%). Generally, the counts of L. monocytogenes in positive products remained under ten colony forming units (CFU) per gram of product. Only 1.6% of the RTE meat and fish products contained L. monocytogenes in range of 10–100 CFU/g and 0.3% more than 100 CFU/g at the end of shelf-life. The food category containing highest L. monocytogenes prevalence was RTE...

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Prognostic significance of cyclooxygenase-2 protein in pancreatic cancer: a meta-analysis

Tumor Biol., 2014

We conducted a meta-analysis of relevant cohort studies to investigate the relationships between cyclooxygenase-2 (COX-2) protein and the prognosis of pancreatic cancer. The following electronic databases were searched without language restrictions: MEDLINE (1966∼2013), the Library Database (Issue 12, 2013), EMBASE (1980∼2013), CINAHL (1982∼2013), Web of Science (1945∼2013), and the Chinese Biomedical Database (CBM) (1982∼2013). Meta-analysis was performed using the STATA statistical software. Six cohort studies with a total of 712 pancreatic cancer patients were involved in this meta-analysis. Our findings showed that COX-2-positive patients were significantly associated with a shorter overall survival (OS) than COX-2-negative patients (hazard rat...

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Gastrointestinal Hormones and Function of Pancreatic Islets: Studies on Insulin Secretion,³H-Leucine Incorporation and Intracellular Free Leucine Pool in Isolated Pancreatic Mouse Islets

Endocrinology, 1974

Secretion and biosynthesis of (pro-) insulin were studied in isolated pancreatic mouse islets in the presence of secretin, pancreozymincholecystokinin, gastrin and glucagon, at 0, 100 and 300 mg⁄100 ml glucose. Incorporation of aHleucine into the proinsulin and insulin fraction obtained after gel nitration of the islet proteins on a Sephadex G 50 fine column was taken as parameter of insulin synthesis. Specific radioactivity of free intracellular leucine pool in the isolated islets was determined under different conditions. In the absence of glucose, pancreozymin was the only substance to stimulate insulin secretion.When glucose was present in the medium, glucagon was able to potentiate insulin output. Secretin and gastrin did not change insulin release. I...

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A control-volume finite-element model for two-dimensional overland flow

Advances in Water Resources, 1993

A control-volume finite-element (CVFE) formulation for the numerical integration of the two-dimensional diffusion hydrodynamic model is presented. Three different methods for computing the transmissivity terms are compared on the basis of the global boundary-outflow error for both the finite-element (FE) and the CVFE formulation of the model. As is well known, the two-dimensional diffusion-hydrodynamic model (DHM) is obtained from the more general overland-flow model, based on momentum and mass-balance equations, with inertia terms neglected. The applied CVFE technique uses linear triangular finiteelement shape functions to estimate the value of the variables at the boundaries of the subcontrol volume of each node. The use of linear-interpolation functions a...

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Effect of maize silage harvest stage on yield, plant composition and fermentation losses

Animal Feed Science and Technology, 1976

Abstract A two year trial was conducted in the southern Po river valley (near Bologna), in order to define the optimum harvest stage for maize silage under various cropping conditions (water availability, hybrid earliness). Maximum green fodder yield was reached, for all treatments, at the milk stage, 20–22 days after flowering, with a whole plant DM content of about 20–21%. On the other hand, maximum DM yield was reached at 40–45 days after flowering at a whole plant DM content of 42% and 38% for maize grown on irrigated and unirrigated land, respectively. Differences between hybrids were only apparent in unirrigated conditions where between the early and late hybrids again a range from 42% to 38% in whole plant DM content was observed, but with a del...

1782043154

Anhedonia as a Key Clinical Feature in the Maintenance and Treatment of Opioid Use Disorder

Clinical Psychological Science, 2019

There is a critical need for research on clinical features that may influence response to treatment for opioid use disorder (OUD). Given its neurobiology and relevance to opioid use, anhedonia may be one such promising clinical feature. We identified and reviewed 11 studies that measured anhedonia in humans with OUD to characterize the current state of evidence and highlight potential implications for treatment. The majority of studies were cross-sectional, indicating higher anhedonia scores in opioid-dependent samples compared with healthy control subjects. Rates of participants with clinically significant anhedonia ranged from 21% to 48%. Anhedonia scores were correlated with opioid craving and use; however, there are significant knowledge gaps regarding i...

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Multi-scale lines and edges in V1 and beyond: Brightness, object categorization and recognition, and consciousness

Biosystems, 2009

In this paper we present an improved model for line and edge detection in cortical area V1. This model is based on responses of simple and complex cells, and it is multi-scale with no free parameters. We illustrate the use of the multi-scale line/edge representation in different processes: visual reconstruction or brightness perception, automatic scale selection and object segregation. A two-level object categorization scenario is tested in which pre-categorization is based on coarse scales only and final categorization on coarse plus fine scales. We also present a multi-scale object and face recognition model. Processing schemes are discussed in the framework of a complete cortical architecture. The fact that brightness perception and object recognition may...

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Golgi apparatus partitioning during cell division (Review)

Molecular Membrane Biology, 2003

This review discusses the mitotic segregation of the Golgi apparatus. The results from classical biochemical and morphological studies have suggested that in mammalian cells this organelle remains distinct during mitosis, although highly fragmented through the formation of mitotic Golgi clusters of small tubules and vesicles. Shedding of free Golgi-derived vesicles would consume Golgi clusters and disperse this organelle throughout the cytoplasm. Vesicles could be partitioned in a stochastic and passive way between the two daughter cells and act as a template for the reassembly of this key organelle. This model has recently been modified by results obtained using GFP- or HRP-tagged Golgi resident enzymes, live cell imaging and electron microscopy. Results ob...

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Effect of calcium spray materials, rate, time of spray application, and rootstocks on fruit quality of ‘red’ and ‘golden delicious’ apples

Journal of Plant Nutrition, 2000

Abstract Calcium (Ca) spray materials improved fruit quality as measured by control of bitter pit, fruit finish (appearance), increased red skin color, reduced incidence of scald, increased juiciness, texture, and fruit firmness of ‘Red’ and ‘Golden Delicious’ apples (Malus domestica, Borkh.). Concentrations of Ca in leaf and fruit tissues were increased by Ca sprays, especially calcium chloride (CaCl2)‐containing spray materials. Improved fruit firmness and control of bitter pit occurred for either standard recommended or high rates of Ca spray materials. At high rates of application, the only significant difference that occurred between early and late applications of Ca spray materials was that less leaf injury occurred with the early application...

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Qualitative analysis of perceptions and experiences of emergency department staff in relation to implementation and outcomes of the Four‐Hour Rule/National Emergency Access Target in Australia

Emerg Medicine Australasia, 2018

Objective The implementation of the time target policy (Four-Hour Rule/National Emergency Access Target [4HR/NEAT]) constituted a major change for ED, and potentially on quality of care. The present study aimed to understand perceptions and experiences of ED staff during 4HR/NEAT implementation. Methods A semi-structured interview was used to explore views and perceptions of 119 ED staff from 16 EDs in New South Wales, Australian Capital Territory, Queensland and Western Australia. The interviews covered aspects such as perceived changes in quality of clinical care, whether the capacity to deliver education was diminished or enhanced and whether the policy affected access to care. Interviews were transcribed, imported to NVivo 11 and analysed using content a...

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Three new europium(III) methanetriacetate metal-organic frameworks: the influence of synthesis on the product topology

Acta Crystallogr B Struct Sci Cryst Eng Mater, 2014

Three new metal-organic framework structures containing Eu III and the little explored methanetriacetate (C 7 H 7 O 6 3− , mta 3− ) ligand have been synthesized. Gel synthesis yields a two-dimensional framework with the formula [Eu(mta)(H 2 O) 3 ] n ·2 n H 2 O, (I), while two polymorphs of the three-dimensional framework material [Eu(mta)(H 2 O)] n · n H 2 O, (II) and (III), are obtained through hydrothermal synthesis at either 423 or 443 K. Compounds (I) and (II) are isomorphous with previously reported Gd III compounds, but compound (III) constitutes a new phase. Compound (I) can be described in terms of dinuclear [Eu 2 (H 2 O) 4 ] 6+ units bonded through mta 3− ligands to form a two-dimensional framework with topology corresponding to a (6,3)-conn...

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Influence of Boswellic acid on physical, structural and morphological properties of poly (vinyl alcohol) films

Chemical Data Collections, 2020

Abstract In the present study Poly(vinyl alcohol) (PVA)/Boswellic acid (BA) (PBA) films were fabricated by solvent casting method with different weight percentage of BA. Physicochemical and mechanical properties of the PBA films were studied using FTIR, XRD, SEM and UTM techniques. Moisture absorption, degree of swelling, water vapor (WVP) and oxygen permeability (OP) of the PBA films were also investigated. Results indicated that moisture absorption and degree of swelling of PBA films were increased with increase of BA content. The FTIR study confirmed the intermolecular interaction between functional groups of PVA and BA in the films. Uniform homogeneous morphology of PBA films suggested miscibility and compatibility between PVA and BA. From the mechanical...

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Dislocation pinning in GaAs by the deliberate introduction of impurities

IEEE J. Quantum Electron., 1975

Recent work has shown that the primary cause of rapid degradation in GaAs-(GaAl)As lasers is the propagation of dark-line defects which originate at threading dislocations present in the as-grown material. This paper considers the effect of first-order elastic interactions between dislocations and deliberately added impurities, such as the commonly used dopants and group III or V impurities. Strongly interacting impurities tend to concentrate preferentially around dislocations in positions where they relieve stress, thus forming an impurity cloud. Subsequent movement of the dislocation then becomes energetically unfavorable. For impurities such as In, Sb, and N the pinning forces can be as large as 10

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Resolvability in graphs and the metric dimension of a graph

Discrete Applied Mathematics, 2000

For an ordered subset W={w1,w2,…,wk} of vertices in a connected graph G and a vertex v of G, the metric representation of v with respect to W is the k-vector r(v|W)=(d(v,w1), d(v,w2),…,d(v,wk)). The set W is a resolving set for G if r(u|W)=r(v|W) implies that u=v for all pairs u,v of vertices of G. The metric dimension dim(G) of G is the minimum cardinality of a resolving set for G. Bounds on dim(G) are presented in terms of the order and the diameter of G. All connected graphs of order n having dimension 1,n−2, or n−1 are determined. A new proof for the dimension of a tree is also presented. From this result sharp bounds on the metric dimension of unicyclic graphs are established. It is shown that dim(H)⩽dim(H×K2)⩽dim(H)+1 for every connected g...

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Saccades to spatially extended targets: the role of eccentricity

NeuroReport, 2004

Size and eccentricity of visual targets are known to modulate saccade parameters. Here we asked for a possible interaction between these target properties. We investigated latency and amplitude of saccades to targets of varying diameter presented at various eccentricities in the visual field. Effects of target size on saccadic eye movements highly depended on eccentricity of saccade targets. For large saccade targets, latencies increased and mean amplitudes decreased mainly at parafoveal eccentricities. By contrast, scatter of saccade amplitudes increased nearly linearly with target size and eccentricity. These effects are consistent with the known functional anatomy of the superior colliculus. Size- and eccentricity-related changes in saccade parameters may...

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On the Existence and Uniqueness of Weak Solutions for a Vorticity Seeding Model

SIAM J. Math. Anal., 2006

In this paper we study the Navier--Stokes equations with a Navier-type boundary condition that has been proposed as an alternative to common near wall models. The boundary condition we study, involving a linear relation between the tangential part of the velocity and the tangential part of the Cauchy stress-vector, is related to the vorticity seeding model introduced in the computational approach to turbulent flows. The presence of a pointwise nonvanishing normal flux may be considered as a tool to avoid the use of phenomenological near wall models in the boundary layer region. Furthermore, the analysis of the problem is suggested by recent advances in the study of large eddy simulation. In the two-dimensional case, by using rather elementary tools, we prove...

1782043153

Estimation of growth parameters of Listeria monocytogenes after sublethal heat and slightly acidic electrolyzed water (SAEW) treatment

Food Control, 2017

Time to detection experiments (TTD) based on turbidometry using an automatic Bioscreen C is a useful and straightforward method for estimating microbial growth parameters (lag time (λ), growth rate (μ) and “work to be done” (h0)) at constant temperature. This study investigated the effects of slightly acidic electrolyzed water (SAEW) and heat treatment on Listeria monocytogenes growth at different recovery temperatures (10 °C, 15 °C, 25 °C, and 30 °C). Similar surviving and sublethally injured L. monocytogenes populations were obtained by heat treatment (55 °C for 10 min) and SAEW treatment (available chlorine concentration of 30 mg/l and ratio of bacteria against SAEW of 8:2 for 30 s). In these experimental conditions, stresses had greater impact...

1782043153

Utilization of glucose, alanine, lactate, and glycerol as lipogenic substrates by periuterine adipose tissue in situ in fed and starved rats.

Journal of Lipid Research, 1988

A technique previously used to study placental transfer in pregnant rats, consisting of labeled tracer infusion through the left uterine artery, was employed to determine the utilization of lipogenic substrates by periuterine adipose tissue in the fed and 48-hr starved female virgin rat. After 20 min infusion with either D[U-14C]glucose, L-[U-14C]alanine, [U-14C]glycerol or L-[U-14C]lactate, the radioactivity appearing in periuterine adipose tissue 14C-labeled lipids from the left side was always higher than that appearing in tissue from the right side. Negligible radioactivity was detected in the tissue from either side when the infusion was done with non-metabolizable derivatives such as L-[1-14C]glucose or [1-14C]alpha-aminoisobutyric acid. Simultaneous i...

1782043153

Augmented Reality Fluorescence Imaging in Cerebrovascular Surgery: A Single-Center Experience with Thirty-Nine Cases

World Neurosurgery, 2021

Several intraoperative imaging methods exist in cerebrovascular surgery to visualize and analyze the vascular anatomy flow. A new method based on multispectral fluorescence (MFL) imaging of indocyanine green (ICG) video angiography (VA) allows real-time, augmented reality (AR) visualization of blood flow superimposed on white-light microscopic images. We describe our single-center experience using MFL AR in cerebrovascular surgery. Case descriptions are provided of cerebrovascular surgery with intraoperative use of MFL AR images performed at our institution from June 2018 to April 2020. MFL superimposes the blood flow in real time on white-light microscopic images. We used MFL AR imaging as well as standard ICG-VA visualization and intraoperative digital sub...

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AoI-Inspired Collaborative Information Collection for AUV-Assisted Internet of Underwater Things

IEEE Internet Things J., 2021

In order to better explore the ocean, autonomous underwater vehicles (AUVs) have been widely applied to facilitate the information collection. However, considering the extremely large-scale deployment of sensor nodes in the Internet of Underwater Things (IoUT), a homogeneous AUV-enabled information collection system cannot support timely and reliable information collection considering the time-varying underwater environment as well as AUV’s energy and mobility constraints. In this article, we propose a multi-AUV-assisted heterogeneous underwater information collection scheme for the sake of optimizing the peak Age of Information (AoI). Moreover, the limited service M/G/1 vacation queueing model is utilized to model the process of information exchange, wher...

1782043153

Preparation, characterization and in vivo evaluation of amorphous atorvastatin calcium nanoparticles using supercritical antisolvent (SAS) process

European Journal of Pharmaceutics and Biopharmaceutics, 2008

In this work, amorphous atorvastatin calcium nanoparticles were successfully prepared using the supercritical antisolvent (SAS) process. The effect of process variables on particle size and distribution of atorvastatin calcium during particle formation was investigated. Solid state characterization, solubility, intrinsic dissolution, powder dissolution studies and pharmacokinetic study in rats were performed. Spherical particles with mean particle size ranging between 152 and 863 nm were obtained by varying process parameters such as precipitation vessel pressure and temperature, drug solution concentration and feed rate ratio of CO2/drug solution. XRD, TGA, FT-IR, FT-Raman, NMR and HPLC analysis indicated that atorvastatin calcium existed as anhydrous amorp...

1782043153

Rickets in Infancy and Childhood

Endocrinol Japon, 1979

The studies on two representatives of rickets in childhood are described in this report.First, plasma levels of 25-hydroxyvitamin D (25-OH-D), serum calcium (Ca), and serum phosphorus (P) were measured in infantile rickets. Mean plasma level of 25-OH-D in rickets group was 13.1±5.7 (S. D.) ng/ml (n=36) which was not significantly lower than that in controls. In rickets group, serum Ca and P were within normal limits, though serum alkaline phosphatase increased significantly. In conclusion, rickets in low birth weight infants is not absolutely due to vitamin D deficiency. Our study suggests that the increase of requirement for vitamin D in low birth weight infants results in relative vitamin D deficiency. Second, clinical effects of massive doses of 1α-hydr...

1782043153

Employing phytosulfokine α (PSKα) for delaying broccoli florets yellowing during cold storage

Food Chemistry, 2021

• Exogenous PSKα application delays broccoli florets yellowing during cold storage. • Lower MDA accumulation represents preserving membrane integrity. • Promoting ROS scavenging systems contributes to lower H 2 O 2 accumulation. • Suppressing PLD and LOX expression is accompanying by triggering HSP70 and HSP90 expression. • Triggering IPT and suppressing CKO expression contributes to higher cytokinin accumulation. The yellowing of florets limits the economic and nutritional value of broccoli during postharvest. We investigated mechanisms of action of 150 nM phytosulfokine α (PSKα) for delaying florets yellowing in broccoli during cold storage. Our results showed that SUMO E3 ligase ( SIZ1 ) gene expression was higher in florets treated with PSK�...

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Organizational career growth and subsequent voice behavior: The role of affective commitment and gender

Journal of Vocational Behavior, 2014

Although research has established a connection between career growth and turnover intentions, there continues to be a need to study how employee career growth contributes positively to organizations. In the present research, we studied in particular how employees' organizational career growth is related to voice behavior. Employing theories of social exchange, organization-based self-esteem, and psychological attachment, we developed six hypotheses pertinent to this relationship, including the mediating role of affective organizational commitment and the moderating effect of gender. We tested our hypotheses using data from 328 employees in Mainland China over three time periods. As we hypothesized, we found positive relationships between the three dimensions...

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The effect of a Gaussian distribution of chain-lengths on the phase-behaviour of a model system of rod-like macromolecules in solution

Polymer, 1982

The calculations of Flory and co-workers for the formation and composition of isotropic, bi-phasic and anisotropic systems composed of rod-like macromolecules in solution have been extended to include a Gaussian distribution of rod-lengths. The critical concentrations for the beginning and end of the bi-phasic range vo∗p and vo∗∗p respectively, the volume fraction of anisotropic phase ΦA, the compositions and average molecular weights of isotropic and anisotropic phases, and the order parameter S of the anisotropic phase are calculated as a function of polymer concentration vop for rod-length xo in the range 30 to 70 and for a Gaussian distribution half-width Δ12 in the range 10 to 70. The extent of the bi-phasic range and the composition of the two ...

1782043153

Effect of hydrofluoric acid etching of glass on the performance of organic–inorganic glass laminates

Composites Part B: Engineering, 2013

Abstract Organic–inorganic glass laminates with polyurethane (PU) as an adhesive interlayer were prepared by a warm-pressing method. The hydrofluoric acid etching of glass surface was performed to investigate its effect on the mechanical behavior of glass laminates. Results show that the acidic etching treatment of glass seldom influences the transparency and haze of glass laminates when the etching time is below 30 min. The bonding strength and fracture stress of glass laminates firstly increase and then decrease with increasing etching time. This could be attributed to the formation of three-dimensional interface of glass laminates. The unique interface structure not only increases the contact area between glass and PU layer, leading to the improvement ...

1782043153

The Flavoenzyme Ferredoxin (Flavodoxin)-NADP(H) Reductase Modulates NADP(H) Homeostasis during the soxRS Response of Escherichia coli

J Bacteriol, 2002

ABSTRACT Escherichia coli cells from strain fpr , deficient in the soxRS -induced ferredoxin (flavodoxin)-NADP(H) reductase (FPR), display abnormal sensitivity to the bactericidal effects of the superoxide-generating reagent methyl viologen (MV). Neither bacteriostatic effects nor inactivation of oxidant-sensitive hydrolyases could be detected in fpr cells exposed to MV. FPR inactivation did not affect the MV-driven soxRS response, whereas FPR overexpression led to enhanced stimulation of the regulon, with concomitant oxidation of the NADPH pool. Accumulation of a site-directed FPR mutant that uses NAD(H) instead of NADP(H) had no effect on soxRS induction and failed to protect fpr cells from MV toxicity, suggesting that FPR contributes to NADP(H) homeostasi...

1782043153

Psychotherapeutic Control of Hypertension

N Engl J Med, 1976

We conducted a six-month trial to determine the effect of psychologic relaxation on blood pressure. Alterations of peripheral sympathetic-nervous-system activity, as reflected by changes of dopamine-beta-hydroxylase in plasma, were evaluated, and plasma volume and plasma renin activity were measured. Treated patients exhibited significant (P < 0.05) reductions of blood pressure when supine and upright, and of plasma dopamine-beta-hydroxylase activity, and furosemide-stimulated renin activity when upright. Blood-pressure changes after six months correlated best with differences in plasma activity of dopamine-beta-hydroxylase with patients supine (r = 0.54; P < 0.05) and upright (r = 0.62; P

1782043153

Insights into periodate oxidation of bisphenol A mediated by manganese

Chemical Engineering Journal, 2019

Abstract A highly efficient destruction of bisphenol A (BPA) was explored through Mn2+-mediated activation of periodate under ambient conditions. The conjunction of periodate with different transition metals was investigated, and Mn exhibited the best catalytic performance. The periodate oxidation of BPA could be rapidly proceeded loading with low amount of Mn2+ and in a wide pH range. The presence of humic acid significantly enhance the degradation efficiency due to its electron transfer characteristic. Besides, molecular oxygen played an indispensable role during the reaction, and superoxide radicals was discriminated as the leading reactive species for BPA degradation. The homogeneous periodate activation initiated by Mn2+ provides a feasible approach for...

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Supercritical fractionation of Agathosma (buchu) essential oil. Part I: Measurement of binary phase equilibria

The Journal of Supercritical Fluids, 2016

The value of essential oils can be improved by removing the potentially unstable compounds, such as monoterpene hydrocarbons (MT), in a process known as deterpenation. In order to determine the feasibility of deterpenation using supercritical CO2, the phase behaviour of the pure components in CO2 must be known. Phase equilibria data of most components found in buchu essential oil in supercritical CO2 are not available in the literature. In this study, the phase equilibria of binary systems pulegone + CO2, diosphenol + CO2, terpinen-4-ol + CO2 and limonene + CO2 were measured between 308 K and 358 K, and at solute mass fractions between 0.0147 and 0.638, using a static synthetic view cell. The data were modelled using Chrastil's equation and separation factor...

1782043153

EFFECT OF SORPTION BARRIERS ON THE RADON FLUENCE RATE FROM SOIL

Health Physics, 1992

The fluence rate of radon from soil as affected by active sorption barriers [activated carbon (AC) and mordenite], soil moisture content, and temperature was measured over a period of 964 d. (To limit the level of radon in indoor environments, an active sorption barrier potentially could be mixed with soil placed adjacent to the substructures of buildings.) AC, mixed with the top layer of soil in columns, markedly reduced the fluence rate of radon from soil over the entire time of the experiment and at all moisture contents and temperatures examined. Mordenite, on the other hand, was not effective in decreasing the fluence rate. AC also has a relatively high sorption capacity for aqueous lead species. (Stable lead isotopes are end-products in the uranium and...

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Computability by probabilistic Turing machines

Trans. Amer. Math. Soc., 1971

In the present paper, the definition of probabilistic Turing machines is extended to allow the introduction of relative computability. Relative computable functions, predicates and sets are discussed and their operations investigated. It is shown that, despite the fact that randomness is involved, most of the conventional results hold in the probabilistic case. Various classes of ordinary functions characterizable by computable random functions are introduced, and their relations are examined. Perhaps somewhat unexpectedly, it is shown that, in some sense, probabilistic Turing machines are capable of computing any given function. Finally, a necessary and sufficient condition for an ordinary function to be partially recursive is established via computable pro...

1782043153

Involvement of Newborn Neurons in Olfactory Associative Learning? The Operant or Non-operant Component of the Task Makes All the Difference

J. Neurosci., 2011

New neurons are continuously generated in the adult mammalian olfactory bulb. The role of these newborn neurons in olfactory learning has been debated. Blocking the addition of neurons has been reported either to result in memory alteration or to have no effect at all (Imayoshi et al., 2008; Breton-Provencher et al., 2009; Lazarini et al., 2009; Sultan et al., 2010). These discrepancies may have arisen from differences in the behavioral paradigms used: operant procedures indicated that neurogenesis blockade had substantial effects on long-term memory (Lazarini et al., 2009; Sultan et al., 2010) whereas other methods had little effect (Imayoshi et al., 2008; Breton-Provencher et al., 2009). Surprisingly, while operant learning is known to modulate the surviva...

1782043153

Effects of soybean and rice bran oil on hemato-biochemical parameters in mice

Res. Agric. Livest. Fish., 2018

The study was conducted on “Swiss Albino” mice fed with additional supplementation of soybean oil and rice bran oil to observe the effects on hematological (total erythrocyte count and hemoglobin concentration) and biochemical parameters (total serum cholesterol, triglycerides, high density lipoproteins and uric acid). A total of 30, 6-8 weeks old mice were randomly divided into 3 equal groups (n=10) as A, B and C. Group A was considered as control (fed only commercial ration), group B was supplemented with rice bran oil and group C treated with soybean oil respectively in addition to commercial ration for 60 days. At the end of feeding trial the mice were sacrificed for analysis of hematobiochemical parameters. The total erythrocyte count and hemoglobin...

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The effect of heme on intracellular iron pools during differentiation of friend erythroleukemia cells

Biochimica et Biophysica Acta (BBA) - General Subjects, 1981

The inhibition of cellular iron uptake by hemin described previously in reticulocytes was studied in murine erythroleukemia (Friend) cells that can be induced to differentiate in culture by dimethyl sulfoxide (DMSO). Hemin had no effect on iron uptake into noninduced cells. After the induction by DMSO, hemin inhibited iron uptake into Friend cells and this effect of hemin became more pronounced with the further progress of differentiation. The reduction of cellular iron accumulation was caused mainly by inhibition of iron incorporation into heme, iron uptake into the non-heme pool was little influenced by hemin treatment. Inhibition of heme synthesis by isonicotinic acid hydrazide (INH) caused an accumulation of iron in mitochondria in DMSO-induced cells, bu...

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Inversion of titanomaghemites

Physics of the Earth and Planetary Interiors, 1987

Metastable titanomaghemite inverts to a multiphase intergrowth when heated above 250–300°C. In the present study, pure and aluminum-substituted titanomaghemites were heated to 600°C to produce inversion products. Saturation hysteresis properties-saturation magnetization (JS), saturation remanence (JRS), and coercive force (HC-were measured at intervals during heating and cooling between 20 and 600°C. X-ray cell edge and magnetic viscosity were measured at room temperature before and after heating. As a result of inversion, the magnetic and other physical properties changed considerably. JS of the final inversion product was always higher than JS of the starting titanomaghemite. Decreases in the ratio JRSJS and in HC and an increase in magnetic viscosity...

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Development of normal mice from metaphase I oocytes fertilized with primary spermatocytes

Proc. Natl. Acad. Sci. U.S.A., 1998

Primary spermatocytes are the male germ cells before meiosis I. To examine whether these 4n diploid cells are genetically competent to fertilize oocytes and support full embryo development, we introduced the nuclei of pachytene/diplotene spermatocytes into oocytes that were arrested in prophase I (germinal vesicle stage), metaphase I, or metaphase II (Met II). Both the paternal and maternal chromosomes then were allowed to undergo meiosis synchronously until Met II. In the first and second groups, the paternal and maternal chromosomes had intermingled to form a large Met II plate, which was then transferred into a fresh enucleated Met II oocyte. In the third group, the paternal Met II chromosomes were obtained by transferring spermatocyte nuclei into Met II ...

1782043152

Norepinephrine sensitivity and membrane potentials of caudal arterial muscle in DOCA-salt, Dahl, and SHR hypertension in rat.

Hypertension, 1982

Comparison of norepinephrine (NE) sensitivity in caudal arterial muscle of rats with three forms of hypertension showed that there was no increase in either DOCA-salt or Dahl genetic hypertension, in contrast to the increased NE sensitivity found in spontaneously hypertensive rats (SHR). In hypertension induced by deoxycorticosterone acetate (DOCA)-salt treatment, as in Dahl genetic hypertension, there was also no difference in membrane potential (Em) between hypertensive and normotensive rats. By comparison to the SHR membrane alterations reported previously, any increased NE sensitivity might have been associated with altered Em electrogenesis which is triggered by a trophic factor of the sympathetic nervous system. SHR have a lower intracellular K+ free i...

1782043152

Outcomes of Preinjury Use of Statins in Patients with Traumatic Brain Injury: A Systematic Review and Meta-analysis

World Neurosurgery, 2021

No completely effective pharmacotherapies have been developed to improve the outcomes of traumatic brain injury (TBI). Given the reporting of cohort studies suggesting that preinjury statin use may reduce TBI-associated mortality, this study aimed to evaluate the effects of statin use in patients with TBI.This study was performed according to the PRISMA guidelines. The PubMed, Embase, Cochrane Central, Web of Science, and China National Knowledge Infrastructure databases were searched from inception until April 13, 2021, using a search strategy that included 2 main terms: "statins" and "traumatic brain injury." The outcomes were mortality, hospital length of stay, and intensive care unit length of stay, which were evaluated using a random-effects model and r...

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Modulation effect in adjacent dual metal single atom catalysts for electrochemical nitrogen reduction reaction

Chinese Chemical Letters, 2022

Nitrogen reduction reaction (NRR) is a clean mode of energy conversion and the development of highly efficient NRR electrocatalysts under ambient conditions for industrial application is still a big challenge. Metal-nitrogen-carbon (M-N-C) has emerged as a class of single atom catalyst due to the unique geometric structure, high catalytic activity, and clear selectivity. Herein, we designed a series of dual metal single atom catalysts containing adjacent M-N-C dual active centers (MN4/M'N4-C) as NRR electrocatalysts to uncover the structure-activity relationship. By evaluating structural stability, catalytic activity, and selectivity using density functional theory (DFT) calculations, 5 catalysts, such as CrN4/M'N4-C (M’ = Cr, Mn, Fe, Cu and Zn), were dete...

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