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Search Results: 1 - 10 of 57266 matches for " Shi Yao-Jiang "
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Simulation of lower hybrid current drive

Ding Bo-Jiang,Kuang Guang-Li,Liu Yue-Xiu,Shen Wei-Ci,Yu Jia-Wen,Shi Yao-Jiang,

物理学报 , 2002,
Abstract: Resolving the two dimensional Fokker Planck equation, evolutions of the driven current and its profile on HT 7 tokamak are obtained. The simulated results are nearly in agreement with the experimental data, which supplies a theoretical guidance for lower hybrid current drive (LHCD) experiments on HT 7 tokamak. In addition, the effect of radial diffusion of fast electrons on the driven current during LHCD is considered by means of solving the current diffusion equation.
Study on the growth of Spirulina in the wastewater from culture of shrimp

HAO Ju-min,ZHENG Jiang,LI Zhong-bao,HUANG Yong-chun,TU Ya,LI Yu-bao,LIN Yao-jiang,ZHOU Wen-hong,

水生态学杂志 , 2011,
Abstract: The growth of Spirulina platensis in wastewater from the culture of shrimp was studied in the present paper. The results showed that S. platensis could not grow in the wastewater. After adding 5% Zarrouk culture to the wastewater, S. platensis could have good growth. By orthogonal experiments, the optimal cultivating condition for S. platensis in the wastewater with 5% adding culture was obtained: pH=8, initial density OD560=0.3, light intensity =2500lx. The study also showed that the microalgae could well utilize nitrogen and phosphorus in the wastewater and had good removal of the two elements. Spirulina platensis could remove 64.5% of ammoniac nitrogen, 41.9% of nitrate nitrogen, 67.1% of nitrite nitrogen, and 43.9% of active phosphorus.
Analysis of Total Suspended Particulates Pollution Along Shanghai-Nanjing Expressway  [PDF]
Yao Zhao, Di Shi
Open Journal of Air Pollution (OJAP) , 2012, DOI: 10.4236/ojap.2012.12004
Abstract: The paper takes the Shanghai-Nanjing expressway as the research subject and takes the samples of the Total Suspended Particulates (TSP) on both sides of the highway as samples to analyze the pollution and the pattern of pollution distribution. The study shows that the concentration of TSP is very high, even six times of the national limit value.
Reduced expression of tissue factor pathway inhibitor-2 contributes to apoptosis and angiogenesis in cervical cancer
Qiao Zhang, Yao Zhang, Shi Z Wang, Ning Wang, Wei G Jiang, Yao H Ji, Shu L Zhang
Journal of Experimental & Clinical Cancer Research , 2012, DOI: 10.1186/1756-9966-31-1
Abstract: This study involved 12 normal cervical squamous epithelia, 48 cervical intraepithelial neoplasia (CIN), and 68 cervical cancer. The expression of TFPI-2, Ki-67 and vascular endothelial growth factor (VEGF) were investigated by immunohistochemistry staining. The apoptolic index(AI) was determined with an in situ end-labeling assay(TUNEL). And the marker of CD34 staining was used as an indicator of microvessel density (MVD).TFPI-2 expression has a decreasing trend with the progression of cervical cancer and was significantly correlated with FIGO stage, lymph node metastasis and HPV infection. In addition, there were significant positive correlations between the grading of TFPI-2 expression and AI(P = 0.004). In contrast, the expression of TFPI-2 and VEGF or MVD was negatively correlated (both p < 0.001). However, we did not establish any signi?cant correlation between Ki-67 and TFPI-2 expression in cervical cancer.The results suggested that the expression of TFPI-2 had a decreasing trend with tumor progression of cervical cancer. There was a close association between the expression of TFPI-2 and tumor cell apoptosis and angiogenesis in patients with cervical cancer. TFPI-2 may play an inhibitive role during the development of cervical cancer.Cervical cancer is the second most common malignancy in women around the world [1]. Cervical cancer occurs in a multi-step process, a sequential transition from a cervix with a normal epithelium to cervical intraepithelial neoplasia (CIN) and invasive cervical cancer. It is clear that persistent high-risk Human Papillomavirus (hr-HPV) infections are the strongest epidemiologic risk factor for the development of invasive cervical cancer [2]. However, HPV infection alone is not suf?cient to cause cervical cancer. Consequently, much interest has been focused on the molecular basis which contribute to drive the progression of cervical cancer. Proteolytic degradation of the extracellular matrix (ECM) is considered to be an essential st
Reduction of n-3 PUFAs, specifically DHA and EPA, and enhancement of peroxisomal beta-oxidation in type 2 diabetic rat heart
Lianguo Hou, Kaoqi Lian, Min Yao, Yun Shi, Xin Lu, Lijia Fang, Tianbo He, Lingling Jiang
Cardiovascular Diabetology , 2012, DOI: 10.1186/1475-2840-11-126
Abstract: The capillary gas chromatography results showed that all the n-3 (or omega-3) PUFAs, especially DHA (~50%) and EPA (~100%), were significantly decreased, and the n-6/n-3 ratio (~115%) was significantly increased in the hearts of diabetic rats. The activity of peroxisomal beta-oxidation, which is crucial to very-long-chain and unsaturated FA metabolism (including DHA), was significantly elevated in DM hearts. Additionally, the real-time PCR results showed that the mRNA expression of most peroxisomal beta-oxidation key enzymes were up-regulated in T2DM rat hearts, which might contribute to the reduction of n-3 (or omega-3) PUFAs.In conclusion, our results indicate that T2DM hearts consume more n-3 PUFAs, especially DHA and EPA, due to exaggerated peroxisomal beta-oxidation.Type 2 diabetes mellitus (T2DM) is associated with high cardiovascular morbidity and mortality [1]. In patients with diabetes, the fatty acid (FA) supply to the heart increases to compensate for the diminished utilization of glucose as an energy source. Although the dramatic increase in FA influx markedly increases the fatty acid oxidation (FAO) [2], it also leads to elevated FA and subsequent triglyceride (TG) synthesis in the diabetic heart, causing cellular lipotoxicity and the initiation of cardiac dysfunction [3]. Alternatively, the diabetic heart is characterized by significant alterations in the fatty acid composition of heart membranes. It has been shown that the linoleic acid (C18:2n-6) content is increased [4] and the n-3 polyunsaturated fatty acid (PUFA) content is decreased [5] in the cardiac phospholipids of STZ-treated rats and fructose-fed rats.Fatty acids are degraded by both mitochondrial and peroxisomal β-oxidation. The fatty acids that are shorter than C20 are primarily oxidized in the mitochondria, and the fatty acids that are greater than C22 (very-long-chain fatty acids, VLCFA), including polyunsaturated fatty acids (PUFA, Polyenoic acids with 20–22 carbon atoms and 3–6 double
Two-dimensional self-organization of 1-nonanethiol-capped gold nanoparticles
Peng Jiang,Sishen Xie,Jiannian Yao,Shengtai He,Haoxu Zhang,Dongxia Shi,Shijin Pang,Hongjun Gao
Chinese Science Bulletin , 2001, DOI: 10.1007/BF03183543
Abstract: A two-dimensional (2D) ordered hexagonal close-packed structure, formed by 1-nonanethiol-capped gold nanoparticles, is reported. The structure was constructed only by dipping the gold nanoparticle colloidal solution on flat substrate. The gold nanoparticles were synthesized as follows: First, AuCl 4 1 was transferred from aqueous solution to toluene by the phase-transfer reagent of tetraoctylammonium bromide. Then it was reduced with aqueous sodium borohydride in the presence of a given amount of 1-nonanethiol molecules which was used to control the nucleation and growth of the gold nanoparticles for the desired size. The experimental techniques, such as UV-Vis, FT-IR, and X-ray photoelectron spectroscopy (XPS), were employed to characterize the obtained product. Transmission electron microscopy (TEM) measurement demonstrated the size of the gold nanoparticle and the formation of two-dimensional ordered hexagonal close-packed gold nanoparticle structure.
A Kind of Expert System Tool Language for Image Understanding

JIANG Li li,SHI Ce,YAO Qing dong,

中国图象图形学报 , 2001,
Abstract: The aim of this research is to realize multiple knowledge sources cooperation of problem solving in real time image processing system under parallel environment. This paper introduces a kind of expert system tool language for image understanding, V language (ver 3). The discussion of V.3 is concentrated on its knowledge representation, inference mode and control mechanism. In V.3, knowledge source is consisted of frames of typical object in image understanding, and is controlled by layered blackboard. The inference mode is mixture. Apart from these, several new ideas are also introduced. The object oriented frames present both the static knowledge (about the object) and the dynamic knowledge (methods/procedures using for image processing) at the same time. The post office may record and transmit messages between frames. Blackboard, served as control mechanism, is layered according to knowledge sources. At the end of this paper, an example, the recognition of bridge over water is discussed in detail.
2-Amino-3-methylpyridinium 2-amino-5-methylpyridinium sulfate monohydrate
Jiang Gong,Gang Chen,Shi-Feng Ni,Yong-Yao Zhang
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809049241
Abstract: The asymmetric unit of the title compound, 2C6H9N2+·SO42 ·H2O, contains two isomeric protonated aminomethylpyridine cations, a sulfate anion and a solvent water molecule. The cations are in the iminium tautomeric form. In the crystal structure, intermolecular O—H...O, N—H...O and weak C—H...O hydrogen bonds link the components into a three-dimensional network. Additional stabilization is provided by weak π–π stacking interactions, with centroid–centroid distances of 3.758 (2) and 3.774 (1) .
Bis(2-amino-6-methylpyridinium) tetrachloridocuprate(II)
Jiang Gong,Gang Chen,Shi-Feng Ni,Yong-Yao Zhang
Acta Crystallographica Section E , 2009, DOI: 10.1107/s160053680904923x
Abstract: The title compound, (C6H9N2)2[CuCl4], contains a distorted tetrahedral [CuCl4]2 anion and two protonated aminopyridinium cations. The geometries of the protonated aminopyridinium cations reveal amine–imine tautomerism. The crystal packing is influenced by N—H...Cl and C—H...Cl hydrogen bonds and π–π stacking interactions [centroid–centroid distances = 3.635 (4) and 3.642 (4)°].
Antioxidant, Antibacterial and Antischistosomal Activities of Extracts from Grateloupia livida (Harv). Yamada
Zebin Jiang, Yicun Chen, Fen Yao, Weizhou Chen, Shuping Zhong, Fuchun Zheng, Ganggang Shi
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0080413
Abstract: The present study was designated to evaluate the antioxidant, antibacterial and antischistosomal activities of Grateloupia livida (GL) extracts in vitro. A GL Ethanol extract (EE) was separated into petroleum ether (PE), ethyl acetate (EA), n-butyl alcohol (BuOH) and aqueous (AQ) fractions to fractionate the polar and non-polar compounds in the EE. Extracts antioxidant activities were evaluated in vitro by DPPH radical-scavenging, deoxyribose radical scavenging, and β-carotene bleaching assays, all using butylated hydroxytoluene (BHT) as the reference antioxidant compound. The most effective antioxidant properties were observed in the PE fraction in all three assays. Antimicrobial testing showed that the PE fraction exhibited broad-spectrum antimicrobial activity, with the PE fraction also exhibiting strong activity against the human pathogenic trematode S. japonicum adult worm. In order to investigate the relationships between bioactivity and chemical composition, the chemical composition of the PE fraction was analyzed by gas chromatography-mass spectrometry (GC-MS). In total, 25 components were identified in the PE fraction, most of which have known antioxidant and antimicrobial activities. However, none of the compounds have reported activity against Schistosoma, suggesting that the schistosomicidal activity of the PE fraction may be related to minor constituents present in the extract, or governed by more intricate synergistic or additive relationships. Finally, fractions with the greatest biological activity displayed neither cellular cytotoxicity, at concentrations up to 100 ug/ml, or acute oral toxicity in mice, at doses up to 2000 mg/kg. Based on antioxidant, antimicrobial, antischistosomal activities, and low toxicity, the PE fraction possesses properties useful for food preservation and overall improvement of human health.
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