Yong-Min Zhang

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Results of the Ðrst spherically diverging, hydrodynamically unstable laboratory experiments of relevance to supernovae (SNe) are reported. The experiments are accomplished by using laser radiation to explode a hemispherical capsule, having a perturbed outer surface, which is embedded within a volume of low-density foam. The evolution of the experiment, like(More)
Numerical simulations for Rayleigh-Taylor (RT) and Richtmyer-Meshkov (RM) instabilities for three dimensional axisymmetric fluids have been successfully conducted by a front tracking method. In the first simulation, we consider single mode RT instability for an axially symmetric perturbed interface in a circular tube. We compare the computed bubble velocity(More)
In this paper, we establish a Front Tracking method to solve Rayleigh-Taylor (RT) and Richtmyer-Meshkov (RM) Instabilities in axi-symmetric cylindrical and spherical geometries. Validation is carried out by comparing the computed single mode bubble velocity with various theoretical models and experimental results. We also validate our results by comparing(More)
Glycosphingolipids are components of essentially all mammalian cell membranes and are involved in a variety of significant cellular functions, including proliferation, adhesion, motility and differentiation. Sialosyllactosylceramide (GM3) is known to inhibit the activation of epidermal growth factor receptor (EGFR). In the present study, an efficient method(More)
In this study, sixteen new 5,5-cyclopropanespirohydantoin derivatives were synthesized and tested for anticonvulsant activity using maximal electroshock (MES), subcutaneous pentylenetetrazole screens. Their neurotoxicity was determined by the rotarod test. Two compounds 7f and 7n showed promising anticonvulsant activities in both models employed for(More)
Underwater shock waves (SWs) generated by underwater electrical wire explosions (UEWEs) have been widely studied and applied. Precise measurement of this kind of SWs is important, but very difficult to accomplish due to their high peak pressure, steep rising edge and very short pulse width (on the order of tens of μs). This paper aims to analyze the signals(More)
In the present study on the development of new anticonvulsants, twelve new aryl sulfonyl semicarbazide derivatives were synthesized and tested for anticonvulsant activity using maximal electroshock (MES), subcutaneous pentylenetetrazole screens. Their neurotoxicity was determined by the rotorod test. The most active compound 5i showed the MES-induced(More)
The influence of different fermentation conditions on intracellular polysaccharide (IPS) production and activities of the phosphoglucomutase (PGM), UDPG-pyrophosphorylase (UGP), phosphoglucose isomerase (PGI), UDPG-dehydrogenase (UGD), and glucokinase (GK) implicated in metabolite synthesis in Cordyceps militaris was evaluated. The highest IPS production(More)