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Search Results: 1 - 10 of 120056 matches for " Yingzhong Wang "
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Evaluation Index System of Corporation’s Innovation Capacity and Application Study  [PDF]
Xuezhen Hong, Yingzhong Wang
Technology and Investment (TI) , 2016, DOI: 10.4236/ti.2016.74016
Abstract:
Innovation is the precondition for the sustainable development of corporation, and the purpose of “reform of the supply front” which the government puts forward at present is to improve the innovation capacity of corporation. In this paper, in order to provide reference for improving innovation capacity and seek the factor of improving the innovation capacity, an evaluation index system of corporation’s innovation capacity is established after analyzing the input, profit, steady finance and governance capacity of the corporations which are listed on the Growth Enterprises Market by comparing the score of each corporation’s innovation capacity.
Ultrafast Spectroscopy of Mid-Infrared Internal Exciton Transitions of Separated Single-Walled Carbon Nanotubes
Jigang Wang,Matt W. Graham,Yingzhong Ma,Graham R. Fleming,Robert A. Kaindl
Physics , 2009, DOI: 10.1103/PhysRevLett.104.177401
Abstract: We report a femtosecond mid-infrared study of the broadband low-energy response of individually separated (6,5) and (7,5) single-walled carbon nanotubes. Strong photoinduced absorption is observed around 200 meV, whose transition energy, oscillator strength, resonant chirality enhancement and dynamics manifest the observation of quasi-1D intra-excitonic transitions. A model of the nanotube 1s-2p cross section agrees well with the signal amplitudes. Our study further reveals saturation of the photoinduced absorption with increasing phase-space filling of the correlated e-h pairs.
Bis{1-[(benzoyloxy)methyl]-1H-1,2,3-benzotriazole-κN3}(nitrato-κ2O,O′)silver(I)
Sen Xu,Yingzhong Shen
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812006368
Abstract: In the crystal structure of the title coordination compound, [Ag(NO3)(C14H11N3O2)2], the AgI atom is four-coordinated in a distorted tetrahedral geometry by two O atoms from one nitrate group and two N atoms from two different 1-[(benzoyloxy)methyl]-1H-1,2,3-triazole ligands. In the complex, the two coordinated benzotriazole rings rings are nearly perpendicular, the dihedral angle between their planes being 87.08 (6)°.
(1H-1,2,3-Benzotriazol-1-yl)methyl 2,2-dimethylpropanoate
Sen Xu,Yingzhong Shen
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812010252
Abstract: In the title compound, C12H15N3O2, the dihedral angle between the mean planes of the benzene and triazole rings is 0.331 (53) °. The side chain of the pivalate unit forms a dihedral angle of 69.04 (12)° with the benzotriazole unit. The ester group and two methyl groups of the pivalate unit are disordered with an occupancy ratio of 0.731 (3):0.269 (3). In the crystal, weak π–π stacking interactions are observed between inversion-related benzene rings [centroid–centroid distance = 3.9040 (1) ].
TESTING STUDY ON INTERNAL AND EXTERNAL FRICTION AND FRICTIONAL STRENGTH OF SOILS
土体内外摩擦及摩擦强度试验研究

Tang Liansheng,Zhang Pengchen,Wang Yang,Du Yingzhong,
汤连生
,张鹏程,王洋,杜赢中

岩石力学与工程学报 , 2004,
Abstract: Friction mechanism and frictional strength of soils are analyzed in this paper. Through a series of experiments,the external friction between soils or between soil and concrete and the internal friction of soils are studied. The results show that (1) the primary factors influencing external friction of soils include the grain com- position of soils,the water content,the chemical properties of the pore water and the vertical load on soils,(2) the apparent and intrinsic internal friction factors reduce as the water content in soils increases,and the influence of the water content on the former is larger than that on the latter,(3) the suctions between grains (especially the variable structure suctions) in soils can exert a tremendous influence on the friction of soils,and (4) the influence of water content on external friction strength between structure surfaces is different from the influence on internal friction strength of soils. The distinguish between internal friction (factors) and external friction (factors) of soil is mainly that the formers belong to apparent ones,comprising the contribution of coherences such as generalized suctions that are relative to chemical character of aqueous solution and saturation state,and the latters belong to intrinsic ones,comprising the contribution of coherences such as generalized suctions of shear strength. The coherence and internal friction,which constitute the compressive strength of soil mass,are correlative.
Decreased Plasma IL-35 Levels Are Related to the Left Ventricular Ejection Fraction in Coronary Artery Diseases
Yingzhong Lin, Ying Huang, Zhengde Lu, Cheng Luo, Ying shi, Qiutang Zeng, Yifeng Cao, Lin Liu, Xiaoyan Wang, Qingwei Ji
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0052490
Abstract: Background Accumulating evidence shows that the novel anti-inflammatory cytokine IL-35 can efficiently suppress effector T cell activity and alter the progression of inflammatory and autoimmune diseases. The two subunits of IL-35, EBI3 and p35, are strongly expressed in human advanced plaque, suggesting a potential role of IL-35 in atherosclerosis and coronary artery disease (CAD). However, the plasma levels of IL-35 in patients with CAD have yet to be investigated. Methods Plasma IL-35, IL-10, TGF-β1, IL-12 and IL-27 levels were measured using an ELISA in 43 stable angina pectoris (SAP) patients, 62 unstable angina pectoris (UAP) patients, 56 acute myocardial infarction (AMI) patients and 47 chest pain syndrome patients as a control group. Results The results showed that plasma IL-35 levels were significantly decreased in the SAP group (90.74±34.22 pg/ml), the UAP group (72.20±26.63 pg/ml), and the AMI group (50.21±24.69 pg/ml) compared with chest pain syndrome group (115.06±32.27 pg/ml). Similar results were also demonstrated with IL-10 and TGF-β1. Plasma IL-12 and IL-27 levels were significantly increased in the UAP group (349.72±85.22 pg/ml, 101.75±51.42 pg/ml, respectively) and the AMI group (318.05±86.82 pg/ml, 148.88±68.45 pg/ml, respectively) compared with chest pain syndrome group (138.68±34.37 pg/ml, 63.60±22.75 pg/ml, respectively) and the SAP group (153.84±53.86 pg/ml, 70.84±38.77 pg/ml, respectively). Furthermore, lower IL-35 levels were moderately positively correlated with left ventricular ejection fraction (LVEF) in CAD patients (R = 0.416, P<0.01), whereas higher IL-27 levels were weakly negatively correlated with LVEF in CAD patients(R = ?0.205, P<0.01). Conclusions The results of the present study show that circulating IL-35 is a potentially novel biomarker for coronary artery disease. Regulating the expression of IL-35 also provides a new possible target for the treatment of atherosclerosis and CAD.
Discovery and identification of potential biomarkers of papillary thyroid carcinoma
Yuxia Fan, Linan Shi, Qiuliang Liu, Rui Dong, Qian Zhang, Shaobo Yang, Yingzhong Fan, Heying Yang, Peng Wu, Jiekai Yu, Shu Zheng, Fuquan Yang, Jiaxiang Wang
Molecular Cancer , 2009, DOI: 10.1186/1476-4598-8-79
Abstract: Two hundred and twenty four (224) serum samples with 108 PTC and 116 controls were randomly divided into a training set and a blind testing set. Serum proteomic profiles were analyzed using SELDI-TOF-MS. Candidate biomarkers were purified by HPLC, identified by LC-MS/MS and validated using ProteinChip immunoassays.A total of 3 peaks (m/z with 9190, 6631 and 8697 Da) were screened out by support vector machine (SVM) to construct the classification model with high discriminatory power in the training set. The sensitivity and specificity of the model were 95.15% and 93.97% respectively in the blind testing set. The candidate biomarker with m/z of 9190 Da was found to be up-regulated in PTC patients, and was identified as haptoglobin alpha-1 chain. Another two candidate biomarkers (6631, 8697 Da) were found down-regulated in PTC and identified as apolipoprotein C-I and apolipoprotein C-III, respectively. In addition, the level of haptoglobin alpha-1 chain (9190 Da) progressively increased with the clinical stage I, II, III and IV, and the expression of apolipoprotein C-I and apolipoprotein C-III (6631, 8697 Da) gradually decreased in higher stages.We have identified a set of biomarkers that could discriminate PTC from non-cancer controls. An efficient strategy, including SELDI-TOF-MS analysis, HPLC purification, MALDI-TOF-MS trace and LC-MS/MS identification, has been proved successful.Thyroid carcinoma is the most common endocrine malignancy and a common cancer among the malignancies of head and neck. It comprises 91.5% of all endocrine malignancies and 1% of all malignant diseases [1]. An estimated 33550 new cases are diagnosed annually in the United States and recent statistics shows the incidence of thyroid carcinoma has increased, especially in papillary thyroid carcinomas (PTC) [2]. PTC is the most common type, which accounts for 80% of all thyroid cancers [3]. Early accurate diagnosis and timely treatment are critical for improving long-term survival of PTC patie
Spatial pattern of soil moisture and vegetation attributes along the critical area of desertification in Southern Mu Us Sandy Land
毛乌素沙地南缘沙漠化临界区域土壤水分和植被空间格局

QIU Kaiyang,XIE Yingzhong,XU Dongmei,SHI Xiangfeng,QI Tuoye,LIU Lidan,WANG Dongqing,
邱开阳
,谢应忠,许冬梅,时项锋,齐拓野,刘丽丹,王东清

生态学报 , 2011,
Abstract: The critical area of desertification in Southern Edge of Mu Us Sandy Land is a clear example of a grassland undergoing the process of desertification. Accordingly, studying this process at this site will be important in revealing the underlying mechanisms of grassland desertification in general. We employed several statistical and geostatistical methods to quantify spatial pattern of soil moisture, plant species richness, vegetation coverage, plant density, and moisture/vegetation correlations. Soil moisture was measured at 0-5, 5-10, and 10-15 cm depths. Soil moisture varied moderately at all three depths, and the same as vegetation attributes. Coefficients of variation ranged from 0.33 to 0.89, decreasing with soil depth. Semivariograms of soil moisture at 0-5 and 5-10 cm were best described by an exponential model, whereas those of species richness, vegetation coverage, plant density and soil moisture at 10-15 cm were best described by a spherical model. Values of nugget and sill increased with soil depth, as did random and total variation. Soil moisture at 0-5 cm, species richness, and vegetation coverage exhibited strong spatial autocorrelation, with 99.9, 81.3, and 77.1% of total variation found within autocorrelation distances of 27.5, 216.9, and 255.7 m, respectively. Plant density and soil moisture at 5-10 and 10-15 cm were less spatially auto-correlated, with 64.6, 63.2, and 59.8% of total variation found within autocorrelation distances of 214.4, 500.5, and 510.9 m, respectively. Ecological processes affecting soil moisture at 0-5 cm exerted their effects at finer spatial scales, whereas those affecting species richness, vegetation coverage and plant density operated at somewhat broader spatial scales. Ecological processes affecting soil moisture at 5-10 cm and 10-15 cm did so over still broader scales. Spatial pattern of soil moisture at all depths and plant species richness exhibited strong spatial regularity, generally increasing and then decreasing along the transect. In contrast, vegetation coverage and plant density decreased gradually along the transect. Soil moisture at 0-5 cm was strongly and positively correlated with plant species richness, indicating that surface moisture may be a predominant factor for determining the distribution of plant species in the critical area of desertification. Vegetation coverage was significantly, positively correlated with both plant density and richness, exhibiting an intimate association among vegetation characteristics. However, neither vegetation coverage nor plant density were significantly correlated with soil moisture at any depth, suggesting that soil moisture at surface layers was not a crucial factor for vegetation growing in this area. This study is the basis for further study on the mechanisms of desertification and the relationship between vegetation and soil properties. Furthermore, results of this study have great scientific and practical significance for prevention and mitigati
Spectral variation of light-emitting diodes based on organic molecules doped polymer
Chunxiang Xu,Yingzhong Sheng,Yinkui Li,Yiping Cui
Chinese Science Bulletin , 2000, DOI: 10.1007/BF02886275
Abstract: Organic light-emitting diodes based on naphthylimine-gallium complexes doped into a PPV derivative have been fabricated by a spin coating method. Color variation from green to blue with increase of the applied voltage has been observed. And the electroluminescent intensity of the blend samples is much stronger than that of the samples containing the complexes only. The results have been attributed to the variation of the recombination zone and the charge transfer between the materials. The process of the charge transport has been analyzed in detail.
FLOAT-SINK DESULFURIZATION OF HIGH-SULPHUR COAL FROM PUAN COUNTY, GUIZHOU PROVINCE, PRC
Tian Yingzhong,Zhang Qin,Tang Yun,Qiu Yueqin
Petroleum and Coal , 2010,
Abstract: Guizhou Province has very big coal reserves, which has middle to high sulphur content. It isof significance to study the feasibility of the desulphurization of high sulphur coal throughfloat-and-sink test . Our washability study results showed that when using the media densitybelow 1.5 g/cm3 to float the coal, the total sulphur can be reduced to 1.53%, with coal recovery of83.80%, the desulphurization ratio is up to 39.89%.
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