Ying-feng Wang

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OBJECTIVE To investigate the effect of aloe polysaccharides pretreatment on the cerebral inflammatory response and lipid peroxidation in severe hemorrhagic shock rats first entering high altitude. METHODS Forty healthy male SD rats weighing 250-300 g were randomly divided into 5 groups (n = 8 each): sham group, shock group, AP group was further divided(More)
A simple, rapid method was developed using on-line high-performance liquid chromatography (HPLC)-diode array detection (DAD)/electrospray ionization mass spectrometry (ESI-MS) to simultaneously analyze multiple bioactive constituents in the extract of Rheum tanguticum Maxim. ex Balf. (Dahuang), a traditional Chinese medicine (TCM). Many bioactive(More)
OBJECTIVE To study the changes of plasma metabolites of mini-swines with qi deficiency and blood stasis syndrome due to chronic myocardial ischemia and to explore the relationship between plasma metabonomics and qi deficiency and blood stasis syndrome. METHODS Twenty-two mini-swines were used in this study and were divided into sham-operation group (n=10)(More)
Arsenic is a very important nonmetal element in the environment and is vitally related to human lives. It is well known that the biological availability and toxicological effects of arsenic compounds depend upon their chemical forms, so it is necessary to detect the species of arsenic in some environmental samples, food, medicine, and body fluids. High(More)
Scme certified reference materials (CRMs) were digested and the elemental concentrations were determined by ICP-MS instrument, and the results include not only the trace key elements such as As, Pb, Hg and Cd but also the major components such as Ca, Fe, K, Na etc. The digestion method, the recoveries, and the detection limits are discussed to piove the(More)
This paper aims at exploring the behavior of the sensitivity to weight perturbation for an ensemble of Madalines. An analytical formula is derived first for the calculation of the Adalines' sensitivity, and then based on it an algorithm is given for the computation of the Madalines' sensitivity. The efficiency of the computation is verified by computer(More)
OBJECTIVE To investigate the effect of fluid resuscitation on oxygenation of subjects with hemorrhagic shock in early period of first visit to area of high altitude, an experiment in dogs was performed. METHODS A model of serious hemorrhagic shock was reproduced by exsanguination resulting in a lowering of mean arterial pressure to (35+/-5) mm Hg (1 mm(More)
In this study, the technique of high-performance liquid chromatography coupled with electrospray ionization quadrupole time-of-flight mass spectrometry (HPLC-ESI-Q-TOFMS) was used to analyze and identify the absorptive constituents and their metabolites in drug-containing urine of Wuzhishan (WZS)-miniature pigs administered with Puerariae Lobatae Radix(More)
To investigate the chemical characteristics and possible sources of trace metals in precipitation of Tangshan, a typical industrial city in Northern China, precipitation samples were collected using an automated wet-only sampler for one year from December 2009 to November 2010 and subjected to chemical analysis using ICP-MS. The results showed that crustal(More)
OBJECTIVE To develop an HPLC method for content determination of dehydroabietic acid and abietic acid in aqueous alkali extract of Liquidambaris Resina. METHOD The determination was carried out on a DIONEX C18 column (4.6 mm x 250 mm, 5 microm) eluted with acetonitrile and water containing 0.1% acetic acid. The flow rate was 1 mL x min(-1), and the(More)