Traditional foam hydraulic fracturing fluids used guar cross-linking technology. However,
major production problems, such as high friction and difficulty to accurately control the cross-…

In the continuous liquid distribution process, the emulsion drag-reducing agent has poor
viscosity-increasing ability and a low solid content, resulting in a high concentration and high …

The hydrophobic associating polymer (MXN‐1) was used as a foam stabilizer with optimized
supporting additives to solve the problem of high friction in foam fracturing fluid. The basic …

This paper focuses on the hybrid output-feedback guaranteed cost H/sub /spl infin// robust
control problem for a class of uncertain linear systems. Time-varying uncertainties are …

This paper focuses on the problem of resilient hybrid guaranteed cost control for a class of
uncertain discrete-time switched linear systems. The controller gain to be designed is …

This paper studies the stability of switched Cohen-Grossberg neural networks with interval
time-varying delay and distributed time-varying delay. A piecewise Lyapunov function is …

Cloud services have been utilized in large-scale distributed environments. As an effective
service aggregation methodology, workflow technology has been used to construct composite …

A transition Fokker-Planck-Kolmogorov (FPK) equation describes the procedure of the
probability density evolution whereby the dynamic response and reliability evaluation of …

Sr 2 CuTeO 6 is a square-lattice Néel antiferromagnet with superexchange between first-neighbor
S = 1 / 2 Cu spins mediated by plaquette centered Te ions. Substituting Te by W, the …

Oil-soluble Fe-Ni sulfide nanoparticles (FeNiS x ) were prepared with a simple method and
adopted as the catalyst for slurry-phase hydrocracking of Liaohe vacuum residue (LHVR) in …