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Search Results: 1 - 10 of 17502 matches for " TONG XING "
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Characterization of Blood Flow in Capillaries by Numerical Simulation  [PDF]
Tong Wang, Zhongwen Xing
Journal of Modern Physics (JMP) , 2010, DOI: 10.4236/jmp.2010.16049
Abstract: This paper presents a numerical investigation of the axisymmetric, pressure driven motion of single file erythrocyte (i.e., red blood cell) suspensions flowing in capillaries of diameter 8-11 µm. Our study success-fully recreates several important in vivo hemodynamic and hemorheological properties of microscopic blood flow, such as parachute shape of the cells, blunt velocity profile, and the Fahraeus effect, and they have been shown to have strong dependence on cell deformability, hematocrit and vessel size.
Factors Research on the Influence of Leaching Rate of Nickel and Cobalt from Waste Superalloys with Sulfuric Acid  [PDF]
Xingxiang Fan, Weidong Xing, Haigang Dong, Jiachun Zhao, Yuedong Wu, Bojie Li, Weifeng Tong, Xiaofeng Wu
International Journal of Nonferrous Metallurgy (IJNM) , 2013, DOI: 10.4236/ijnm.2013.22008
Abstract:

Unlike the reported leaching technologies of waste superalloys, the process of the atomized spray-sulfuric acid leaching nickel and cobalt technology was put forward in the present work according to the compositions of waste superalloys. The effects of sulfuric acid temperature, concentration, leaching time, stirring speed and size of superalloys on leaching of Ni and Co from waste superalloys have been mainly investigated, and the optimum leaching conditions were determined and reported. The leaching rates for nickel and cobalt were 96.68% and 96.63%, respectively, and the contents of nickel and cobalt in leaching slag were 6.77% and 0.96%, respectively. The obtained leaching solution containing Ni and Co could be used for production of Ni and Co products after removal.

Study on Treatment of Nitrogen Waste Water Using Biological Contact Oxidation Fluidized Bed
Quanmin Bu, Weining Cai, Xing Tong
Frontiers in Manufacturing Engineering , DOI: 10.7508/FME-V1-N1-7-12
Abstract: In order to improve the denitrification effect of treatment of nitrogen waste water using biological contact oxidation fluidized bed, the feasibility, method and effect of simulated wastewater experimental study using biological contact oxidation fluidized bed under natural temperature is explored. The experimental results show that: ammonia nitrogen is oxidized to nitrate through catalysis of two independent bacteria; the suitable reaction temperature is 20~35℃; nitrite bacteria’s optimum PH value is 7~8.5, nitrate bacteria’s PH value is 6~7.5 ; better nitrification effect can be realized with proportion between nitrite bacteria and nitrate bacteria dissolved oxygen of more than 0.5mg/l.filler particle size should be over 10 mm to enhance removal efficiency of ammonia nitrogen ; Intermittent feeding mode makes activated sludge have good settlement, and can offer good environmental conditions for removal of ammonia nitrogen.
Parallel Multicore CSB Format and Its Sparse Matrix Vector Multiplication  [PDF]
Bing Yang, Shuo Gu, Tong-Xiang Gu, Cong Zheng, Xing-Ping Liu
Advances in Linear Algebra & Matrix Theory (ALAMT) , 2014, DOI: 10.4236/alamt.2014.41001
Abstract:
Sparse Matrix Vector Multiplication (SpMV) is one of the most basic problems in scientific and engineering computations. It is the basic operation in many realms, such as solving linear systems or eigenvalue problems. Nowadays, more than 90 percent of the world’s highest performance parallel computers in the top 500 use multicore architecture. So it is important practically to design the efficient methods of computing SpMV on multicore parallel computers. Usually, algorithms based on compressed sparse row (CSR) format suffer from a number of nonzero elements on each row so hardly as to use the multicore structure efficiently. Compressed Sparse Block (CSB) format is an effective storage format which can compute SpMV efficiently in a multicore computer. This paper presents a parallel multicore CSB format and SpMV based on it. We carried out numerical experiments on a parallel multicore computer. The results show that our parallel multicore CSB format and SpMV algorithm can reach high speedup, and they are highly scalable for banded matrices.
COMPARISON OF VOLATILE COMPONENTS FROM MARCHANTIA CONVOLUTA OBTAINED BY MICROWAVE EXTRACTION AND PHYTOSOL EXTRACTION
YAN,CHEN; XING YU,JIANG; XING,TONG; XIAO QING,CHEN;
Journal of the Chilean Chemical Society , 2008, DOI: 10.4067/S0717-97072008000200016
Abstract: the volatile oils from marchantía convoluta were obtained by microwave extraction (me) and phytosol extraction (pe) methods. the attained extracts were analyzed by gas chromatography with mass spectrometric detector (gc-ms). the compounds were identified according to their retention indices and mass spectra (el, 70 ev). a total of fourteen compounds were identified in me extract accounting for 80.72% of total peak area. isolongifolene (24.588%), 1, 2-benzenedicarboxylic acid, butyl cyclohexyl ester (10.768%), pyrene (9.328%) and hexadecanoic acid, ethyl ester (8.570%) were the major compounds identified from me extract. the analytical results of me extract were compared with pe method. the me extract was found to be markedly different from that of pe extract. a total of seven compounds in pe extract were identified accounting for 74.275% total peak area. 1-phenanthrenecarboxylic acid, 1,2,3,4,4a,9,10, 10a-octahydro-1, 4a-dimethyl-7-(1-methylethyl) methyl ester were the major compounds
COMPARISON OF VOLATILE COMPONENTS FROM MARCHANTIA CONVOLUTA OBTAINED BY MICROWAVE EXTRACTION AND PHYTOSOL EXTRACTION
CHEN YAN,JIANG XING YU,TONG XING,CHEN XIAO QING
Journal of the Chilean Chemical Society , 2008,
Abstract: The volatile oils from Marchantía convoluta were obtained by microwave extraction (ME) and phytosol extraction (PE) methods. The attained extracts were analyzed by gas chromatography with mass spectrometric detector (GC-MS). The compounds were identified according to their retention indices and mass spectra (El, 70 eV). A total of fourteen compounds were identified in ME extract accounting for 80.72% of total peak area. Isolongifolene (24.588%), 1, 2-benzenedicarboxylic acid, butyl cyclohexyl ester (10.768%), pyrene (9.328%) and hexadecanoic acid, ethyl ester (8.570%) were the major compounds identified from ME extract. The analytical results of ME extract were compared with PE method. The ME extract was found to be markedly different from that of PE extract. A total of seven compounds in PE extract were identified accounting for 74.275% total peak area. 1-Phenanthrenecarboxylic acid, 1,2,3,4,4a,9,10, 10a-octahydro-1, 4a-dimethyl-7-(1-methylethyl) methyl ester were the major compounds
Molecularly Imprinted Polymers: Thermodynamic and Kinetic Considerations on the Specific Sorption and Molecular Recognition
Songjun Li,Xing Huang,Mingxia Zheng,Wuke Li,Kejun Tong
Sensors , 2008, DOI: 10.3390/s8042854
Abstract: This article presents a work aiming at thermodynamically and kinetically interpreting the specific sorption and recognition by a molecularly imprinted polymer. Using Boc-L-Phe-OH as a template, the imprinted material was prepared. The result indicates that the prepared polymer can well discriminate the imprint species from its analogue (Boc-D-Phe-OH), so as to adsorb more for the former but less for the latter. Kinetic analysis indicates that this specific sorption, in nature, can be a result of a preferential promotion. The imprint within the polymer causes a larger adsorption rate for the template than for the analogue. Thermodynamic study also implies that the molecular induction from the specific imprint to the template is larger than to the analogue, which thus makes the polymer capable of preferentially alluring the template to bind.
A SIMPLE METHOD CONSIDERING EFFECTS OF CONFINING PRESSURE ON DYNAMIC SHEAR MODULI AND DAMPING RATIO
围压对土动剪模量和阻尼比影响的简化计算方法

JIANG Tong,XING Hailing,
蒋通
,邢海灵

岩石力学与工程学报 , 2007,
Abstract: Confining pressure is one of the key factors that affect dynamic soil properties such as low-amplitude shear modulus and damping ratio,normalized modulus reduction and material damping curves,etc..By analyzing the classical model of dynamic soil properties,predictive equations for estimating low-amplitude shear modulus and damping ratio are presented.Based on the study of M.B.Darendeli,a simple method for calculating normalized shear modulus reduction and damping ratio curves is proposed under certain effective confining pressure from those under referenced confining pressure.According to this method,assuming that the confining pressure has little influence on the shape of the curves;the curves under certain confining pressure can be easily obtained by changing the strain value of the reference curves.The key parameter in this method is deduced with regression analysis of laboratory data collected from various sources.The predicted dynamic shear modulus reduction and damping ratio curves are in excellent agreement with those of the empirical models and test results.Because the strain dependency,the proposed method can be easily combined to the equivalent linear method programs such as DYNEQ for seismic site response analysis.Case study shows that it is reasonable to use effective mean confining pressure dependent soil properties to calculate the surface response spectrum of deep site from rock response spectrum under major earthquake.
Real-time Performance Evaluation of Line Topology Switched Ethernet
Fan Cen,Tao Xing,Ke-Tong Wu,

国际自动化与计算杂志 , 2008,
Abstract: Recently, switched Ethernet has become an active area of research because of its wide uses in industry. However, its uses have various real-time constraints on data communications. This paper analyzes the performance of the line topology switched Ethernet as a data acquisition network. Network calculus theory, which has been successfully applied to assess the real-time performance of packet-switched networks, is used to analyze the networks. To properly describe the activity of switches, a novel approach of modeling data flows into or out of switches is addressed. Based on our model, a concisely analytical expression of the maximal end-to-end delay in line topology switched Ethernet is derived. Finally, the relative simulation results are demonstrated. These results agree well with the analytical results, and thus they validate the data flow modeling techniques.
GEOLOGICAL CLASSIFICATION OF MIGMATIZATION
混合岩化作用的地质成因分类

HE Tong-xing,
贺同兴

地球学报 , 1987,
Abstract: Migmatite and mechanism of migmatization have been controversial issues in the study of geology and petrology for the past so years. There are mainly two schools, namely, anatexis ultrametamorphis (Holmquest, Eskola and others) and palingenesis (Wegmann, Read et al), the latter emphasizing, the replacement of the "ichor".Since migmatization is a geological process and related to geological setting , it is subdivided into regional and local migmatizations. The former is closely connected with and is a developmental stage of regional metamorphi-sm, while the latter is not directly related regional metamorphism, but mainly associated with magmas in depth (either anataxitic or palingenetic megmas) and alkaline fluids.
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