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您的检索式：作者名="Yanru Sheng"
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| 1 | Screening and flocculating properties of bioflocculant-producing microorganisms显示文摘Screening of bioflocculant-producing microorganisms was carried out. A strain that secreted excellent bioflocculant was isolated from municipal sewage using the spread plate technique, identified as Klebsiella sp. by the analytical profile index (API) identification system, and named A9. Several important factors that had an effect on A9’s bioflocculant-producing and flocculating activity were studied. A total of 4 g/L Kaolin suspension was used to measure the flocculating activity of the bioflocculant from A9. It was found that maltose and urea were A9’s best carbon and nitrogen sources, respectively, and the flocculating activity of the floccu- lating agent from A9 was markedly increased by the addition of trivalent cations such as Fe3+ and Al3+; furthermore, the bioflocculant produced by A9 was most effective when the pH value was 6.0. | Yanling Sheng Qiang Zhang Yanru Sheng Chengbin Li and Huajun Wang | 2006 | Journal of University of Science and Technology Beijing2006，13，4： | 2 |
| 2 | Tie2-expressing monocytes/macrophages promote cerebral revascularization in peri-infarct lesions upon ischemic insult显示文摘Dear Editor,Strokes cause 5.8 million deaths each year.Among these victims,~30% are from China1.Acute ischemic stroke(AIS)is the most prevalent subtype of strokes.Although drugs can alleviate the symptoms,the recoveries of functional vessels within ischemic areas are the critical factor determining the prognosis of patients suffering from AIS2.Nevertheless,the mechanisms involved in cerebral revascularization remain largely unknown. | Yuqiao Sheng Xixi Duan Yanru Liu Feng Li Shengli Ma Xiaoping Shang Xiao Wang Yangyang Liu Rui Xue Zhihai Qin | 2021 | Signal Transduction and Targeted Therapy2021，6，9： | 0 |
| 3 | Pretreatment of copper-bearing refractory gold ores by bio-heap leaching显示文摘The refractory gold ores associated with rich copper and trapped in pyrite and quartz were studied. With conventional technique (all-sliming cyanidation), the gold recovery rate is only 51.78%. To eliminate the negative effects of copper and pyrite on cyanidation and increase the gold recovery rate, the investigation on bio-heap leaching pretreatment was made, by which Cu would be dissolved and gold would be liberated from pyrite. The experiment adopted mixed bacteria, mainly Thiobacillus ferrooxidan (named T. f1), as the bacterial catalyst for bio-preconditioning and was carried out in a PVC column with a diameter of 20 cm and a height of 1.3 m loaded with gold ores. The temperature was controlled between 28 and 30℃, the pH value was kept between 2.0-2.5,and the flux of sprinkling bacterial liquid was maintained 0.80 L/h. After 45-day's bio-oxidization, among the samples sizing from 0to 5 mm, the oxidation rates of Cu, Fe and S were respectively 44.62%, 28.16% and 25.46%, and the gold recovery rate by cyaniding increased to 80.35%. The bio-heap leaching pretreatment can therefore effectively dissolve Cu and liberate gold from pyrite and lead to the increase of gold extraction. | Yanling Sheng Qiang Zhang Huajun Wang Yanru Sheng | 2005 | Journal of University of Science and Technology Beijing2005，12，4： | 0 |
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