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Search Results: 1 - 10 of 127039 matches for " LI Xiaohuan "
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Investigation of Electromagnetic Shielding Effectiveness of Nanostructural Carbon Black/ABS Composites  [PDF]
Xiaohuan Wang
Journal of Electromagnetic Analysis and Applications (JEMAA) , 2011, DOI: 10.4236/jemaa.2011.35026
Abstract: With the increasing application in electromagnetic interference shielding field of high polymer materials, there is an increasing interest in investigating of high polymer composites. The effects of carbon black fraction on volume resistivity and electromagnetic shielding effectiveness (SE) of nanostructural carbon black (CB)/Acrylonitrile Butadiene Styrene (ABS) composites were studied. The results indicated that when CB mass fraction was over 15%, the volume resistivity dropped sharply and when it rose to 35%, the volume resistivity achieved the lowest value 103 Ω?cm and the SE was about 6 dB. In addition, there are two obvious percolation effect at 15% ~ 20% and 30% ~ 35% CB respectively in the course of the volume resistivity changing.
Isometric group of $(α,β)$-type Finsler space and the symmetry of Very Special Relativity
Xin Li,Zhe Chang,Xiaohuan Mo
Physics , 2010,
Abstract: The Killing equation for a general Finsler space is set up. It is showed that the Killing equation of $(\alpha,\beta)$ space can be divided into two parts. One is the same with Killing equation of a Riemannian metric, another equation can be regarded as a constraint. The solutions of Killing equations present explicitly the isometric symmetry of Finsler space. We find that the isometric group of a special case of $(\alpha,\beta)$ space is the same with the symmetry of Very Special Relativity (VSR). The Killing vectors of Finsler-Funk space are given. Unlike Riemannian constant curvature space, the 4 dimensional Funk space with constant curvature just have 6 independent Killing vectors.
A study on treatment of MG wastewater with process of adsorption and flocculation and two-stage SBR
吸附混凝-两段SBR法工艺处理味精废水的研究

FANG Si,LI Xiaohuan,
方士
,李筱焕

浙江大学学报(农业与生命科学版) , 2001,
Abstract: A pilot study on Monosodium Glutamate (MG) wastewater treatmentwas conducted using adsorption and flocculation followed by two-stage Sequencing Batch Reactor (SBR). In pretreatment of MG wastewater, best removal efficiency was reached by adding bentonite (1.6 g/L) as adsorbent and sodium polyacrylate (100 mg/kg) as coagulant. the removal rates were 55%-65% for CODcr and 85%-94% for SS under the condition of 40 ℃,pH 3.0. The removal efficiency of CODcr and SS were 94%-96% and 82%-93% respectively by using two-stage SBR in steady stage.
A study on removing nitrogen from highly nitrogenous MG wastewater with process of shortened nitrification/denitrification
高氨氮味精废水的亚硝化/反亚硝化脱氮研究

FANG Shi,LI Xiaohuan,
方士
,李筱焕

环境科学学报 , 2001,
Abstract: The dilute N rich monosodium glutamate(MG)wastewater was treated by two stage SBR process.The process can be divided into carbon oxidation stage and three shortened nitrification/denitrification stages.The pathway of nitrogen removal from N rich MG wastewater was proved to be via stripping with carbon oxidation stage and shortened nitrification/denitrification subsequently.In the carbon oxidation stage,DO was consumed by high concentrations of organic compound so that nitrification was repressed,Inhibition of nitrite oxidation by free ammonia(FA)resulted in the formation of shortened nitrification/denitrification process.
On Riemann-Finsler geometry
Xiaohuan Mo
Chinese Science Bulletin , 1998, DOI: 10.1007/BF02883805
Abstract: The history of Finsler geometry is reviewed and briefly recent development in Finsler geometry and its application is completed systematically. Furthermore, an interesting open problem has been proposed in this field.
Advanced treatment of dyeing wastewater towards reuse by the combined Fenton oxidation and membrane bioreactor process

Fei Feng,Zhenliang Xu,Xiaohuan Li,Wenting You,Yang Zhen,

环境科学学报(英文版) , 2010,
Abstract: Nineteen surface sediment samples collected from Baiyangdian Lake and its inflowing river (Fuhe River) in North China were analyzed for polybrominated diphenyl ethers (PBDEs) and decabromodiphenylethane (DBDPE). The concentrations of PBDEs and DBDPE in sediments ranged from 5.5 to 300.7 ng/g dry weight (dw) and 1.1 to 68.2 ng/g dw, respectively. Their levels in sediments in Fuhe River were significantly higher than those in Baiyandian Lake. Compared to data from other regions, the PBDE levels in surface sediments from Baiyangdian Lake and Fuhe River were in the medium to lower range. Among the PBDE congeners, BDE209 was predominant, with contributions to the total PBDEs ranging from 79.4% to 97.3% in sediment samples. For the lowly brominated congeners (tri- to hepta-BDE), BDE47 and BDE99 were the most abundant, which contributed 52.1% and 44.1% to the sum of tri- to hepta-BDEs in the sediments from Baiyangdian Lake and Fuhe River, respectively. The compositional patterns of PBDEs in Baiyangdian Lake sediments indicated that technical deca-BDE mixture was the major pollutant sources with a minor contribution of penta-BDE mixture. The present study suggested that the importance of Fuhe River as a possibly potential sources of PBDEs contamination in Baiyangdian Lake.
Risk factors of acute myocardial infarction following primary percutaneous coronary intervention among elderly patients

Fangming Guo,Xiaohuan Wang,Guangping Li,Xin Chen,Yuguang Jin,

老年心脏病学杂志(英文版) , 2009,
Abstract: Background and Objective Large randomized controlled trials have demonstrated that percutaneous coronary intervention (PCI) with the routine use ofdrug-eluting stents is safe and effective, however, the patients older than 75 years undergoing PCI are at increased risk for major adverse cardiac events, so that the patients are usually excluded from this trial. The aim of the present study was to assess the early clinical outcome and risk factors in old patients with acute ST elevation myocardial infarction (STEMI) following primary PCI. Methods We analyzed the outcome after stenting in 136 patients older than 60 years in our coronary care unit with acute STEMI, and the patients were further classified in 2 age groups: patients≥75 years and <75 years. Results Though the older group had a higher prevalence of adverse baseline characteristics and lower final TIMI flow than those of the younger, the procedural success had no difference between two groups. The main adverse clinical events (MACE) for the old group was a little higher comparing with the younger in 12-month following up. Conclusions Our study suggest that drug-eluting stent implantation in elderly patients with acute ST elevation myocardial infarction has high initial procedural success rates despite having more severe baseline risk characteristics, and to shorten the time form symptom onset to PC1 and improve final TIMI flow strategy may decrease MACE among old patients following PCI.
Mobilization of Endogenous Bone Marrow Derived Endothelial Progenitor Cells and Therapeutic Potential of Parathyroid Hormone after Ischemic Stroke in Mice
Li-Li Wang, Dongdong Chen, Jinhwan Lee, Xiaohuan Gu, Ghina Alaaeddine, Jimei Li, Ling Wei, Shan Ping Yu
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0087284
Abstract: Stroke is a major neurovascular disorder threatening human life and health. Very limited clinical treatments are currently available for stroke patients. Stem cell transplantation has shown promising potential as a regenerative treatment after ischemic stroke. The present investigation explores a new concept of mobilizing endogenous stem cells/progenitor cells from the bone marrow using a parathyroid hormone (PTH) therapy after ischemic stroke in adult mice. PTH 1-34 (80 μg/kg, i.p.) was administered 1 hour after focal ischemia and then daily for 6 consecutive days. After 6 days of PTH treatment, there was a significant increase in bone marrow derived CD-34/Fetal liver kinase-1 (Flk-1) positive endothelial progenitor cells (EPCs) in the peripheral blood. PTH treatment significantly increased the expression of trophic/regenerative factors including VEGF, SDF-1, BDNF and Tie-1 in the brain peri-infarct region. Angiogenesis, assessed by co-labeled Glut-1 and BrdU vessels, was significantly increased in PTH-treated ischemic brain compared to vehicle controls. PTH treatment also promoted neuroblast migration from the subventricular zone (SVZ) and increased the number of newly formed neurons in the peri-infarct cortex. PTH-treated mice showed significantly better sensorimotor functional recovery compared to stroke controls. Our data suggests that PTH therapy improves endogenous repair mechanisms after ischemic stroke with functional benefits. Mobilizing endogenous bone marrow-derived stem cells/progenitor cells using PTH and other mobilizers appears an effective and feasible regenerative treatment after ischemic stroke.
Natural Environment Suitability of China and Its Relationship with Population Distributions
Xiaohuan Yang,Hanqing Ma
International Journal of Environmental Research and Public Health , 2009, DOI: 10.3390/ijerph6123025
Abstract: The natural environment factor is one of the main indexes for evaluating human habitats, sustained economic growth and ecological health status. Based on Geographic Information System (GIS) technology and an analytic hierarchy process method, this article presents the construction of the Natural Environment Suitability Index (NESI) model of China by using natural environment data including climate, hydrology, surface configuration and ecological conditions. The NESI value is calculated in grids of 1 km by 1 km through ArcGIS. The spatial regularity of NESI is analyzed according to its spatial distribution and proportional structure. The relationship of NESI with population distribution and economic growth is also discussed by analyzing NESI results with population distribution data and GDP data in 1 km by 1 km grids. The study shows that: (1) the value of NESI is higher in the East and lower in the West in China; The best natural environment area is the Yangtze River Delta region and the worst are the northwest of Tibet and southwest of Xinjiang. (2) There is a close correlation among natural environment, population distribution and economic growth; the best natural environment area, the Yangtze River Delta region, is also the region with higher population density and richer economy. The worst natural environment areas, Northwest and Tibetan Plateau, are also regions with lower population density and poorer economies.
Recent developments and some open problems in Finsler geometry
Mo Xiaohuan,Shen Zhongmin
Chinese Science Bulletin , 2001, DOI: 10.1007/BF02900677
Abstract: Finsler geometry is just Riemannian geometry without the quadratic restriction. Recent studies on Finsler geometry have taken on a new look. In this article, we will briefly discuss recent developments and some open problems in Finsler geometry.
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