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Search Results: 1 - 10 of 145790 matches for " Yue-xin Li "
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The Development of PCB Enterprise Sewage Monitoring and Management and Controlling Systems  [PDF]
Yue-xin Li, Ling Zhang, Si-wei Zhou
Journal of Environmental Protection (JEP) , 2012, DOI: 10.4236/jep.2012.38093
Abstract: With the development of science and technology, more and more cities are confronted with the water pollution of various degrees. The article is devoted to the introduction of a secondary sewage monitoring and management system which can automatically check the content of different components in the sewage discharged by enterprises and supply data reports with the help of probes, SBCs, PCs, etc. The article includes five parts. The first part introduces the research background, main research work and innovations of this system. The second part introduces the system architecture and system process. The third presents the fundamental working principles of SBCs and the relevant algorithms of PCs. The fourth expounds the problems and deficiencies which may exist in the algorithms. And the last part consists of summary and prospect, providing the possible solution to the deficiencies and looking forward to the future direction of research.
Formation and characterization of metallic iron grains in coal-based reduction of oolitic iron ore
Yong-sheng Sun,Yue-xin Han,Yan-feng Li,Yan-jun Li
- , 2017, DOI: https://doi.org/10.1007/s12613-017-1386-5
Abstract: To reveal the formation and characteristics of metallic iron grains in coal-based reduction, oolitic iron ore was isothermally reduced in various reduction times at various reduction temperatures. The microstructure and size of the metallic iron phase were investigated by scanning electron microscopy, energy-dispersive X-ray spectroscopy, and a Bgrimm process mineralogy analyzer. In the results, the reduced Fe separates from the ore and forms metallic iron protuberances, and then the subsequent reduced Fe diffuses to the protuberances and grows into metallic iron grains. Most of the metallic iron grains exist in the quasi-spherical shape and inlaid in the slag matrix. The cumulative frequency of metallic iron grain size is markedly influenced by both reduction time and temperature. With increasing reduction temperature and time, the grain size of metallic iron obviously increases. According to the classical grain growth equation, the growth kinetic parameters, i.e., time exponent, growth activation energy, and pre-exponential constant, are estimated to be 1.3759 ± 0.0374, 103.18 kJ·mol?1, and 922.05, respectively. Using these calculated parameters, a growth model is established to describe the growth behavior of metallic iron grains.
The influence of detorsion of adnexal torsion on melondialdehyde, peroxidase catalase, and catalase of ovarian tissue in rabbits
Yue-xin YU,Ju LI,Jia CHEN,Bao-jian FAN
Medical Journal of Chinese People's Liberation Army , 2013,
Abstract: Objective  To observe the influence of reperfusion after adnexal torsion (AT) on malondialdehyde (MDA), glutathione peroxidase catalase (GSH-Px) and catalase (CAT) contents of ovarian tissue in rabbits. Methods  Forty female Japanese long-eared white rabbits were randomly divided into study group (n=32) and control group (n=8). The left adnexa of rabbits in the study group was clockwise twisted three laps, and then fixed on the left abdominal walls. Adnexal detorsion was then done 24 hours after adnexal torsion in the study group, and then the rabbits were divided into 4 groups (8 each). Both ovaries of each group were removed 24h, 48h, 72h and 96h, respectively, after reperfusion. The rabbits in the control group received sham-operation and both ovaries were removed 96h later. The removed left ovaries were used for biochemical detection of GSH-Px, CAT and MDA. All the right ovaries were used as experimental internal-control. Results  The activity of GSH-Px declined significantly 24h to 72h after adnexal detorsion (P<0.01), and no significant difference was found when compared with that of control group 96h later (P>0.05). The activity of CAT declined significantly 24h and 48h after adnexal detorsion (P<0.01), then it began to increase after 72h, and it became significantly higher in 96h group as compared with that in control group (P<0.05). MDA content in study groups increased obviously 24h and 48h after adnexal detorsion (P<0.01), and it declined 72h later albeit still significantly higher than that of control group (P<0.01), and then it continuously declined to reach the level of control group 96h later (P>0.05). Conclusions  Detorsion after adnexal torsion can affect the degree of oxidative stress injury in rabbits' ovaries as shown by the changes in the activities of GSH-Px, CAT and MDA. With the elongation of detorsion time, ovarian injury will be gradually alleviated.
CD20-positive NK/T-cell lymphoma with indolent clinical course: report of case and review of literature
Qing-ping Jiang, Shao-yan Liu, Yue-xin Yang, Xue-xian Tan, Juan Peng, Zhong-tang Xiong, Zhi Li
Diagnostic Pathology , 2012, DOI: 10.1186/1746-1596-7-133
Abstract: The virtual slides for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1320848277788495 webciteImmunophenotyping is an integral part of lymphoma diagnosis and immunohistochemistry is one of most important methods to be used for classification of lymphomas [1]. As a diagnostic marker, CD3 and CD20 are most widely used for T- and B-cell lineage, respectively. These markers have long been thought to be specific and used to help differentiate T-cell and B-cell neoplasms. In the overwhelming majority of cases, B- or T-cell lymphomas do not express opposite markers, but co-expression of T- and B-cell markers can also be found in some subtypes of lymphomas, such as T lymphoblastic leukaemia/lymphoma (CD79a positivity has been observed in approximately 10% of cases) [2], small lymphocytic lymphoma/chronic lymphocytic leukaemia and mantle cell lymphoma (CD5-positive in tumor cells represent as typical immunohistochemical characteristics) [3]. However, the expression of CD20 in a T-cell lymphoma is extremely rare. To our best knowledge, so far 39 cases of CD20-positive T-cell lymphoma [4-25] and only 2 cases of CD20-positive NK/T-cell lymphoma [26,27] have been previously described in the literature. Since the presence of CD20 is generally considered specific for B-lineage on both benign and neoplastic lymphocytes, the accurate diagnosis of a T-cell lymphoma with CD20 expression is quite difficult and challenging. Herein, we report an additive CD20-positive NK/T-cell lymphoma occurring in the nasal cavity of an elder female patient. In contrast to most of previously reported cases with aggressive behavior, our case presents an indolent clinical course with 10 years of duration. The clinical and histological features of this tumor, as well as differential diagnosis are discussed.A 78-year-old female patient had presented with complaints of mild headache, left nasal obstruction and rhinorrhea for 10 years. The patient had been referred to a local c
Canonical transformation of quantization for mesoscopic capacity-coupled dissipative circuit

Xie Yue-Xin,Li Zhi-Jian,Zhou Guang-Hui,

物理学报 , 2007,
Abstract: We propose a general canonical transformation for mesoscopic capacity-coupled dissipative RLC circuit and prove its feasibility and correctness. Using this transformation, the quantization of a double-loop capacity-coupled dissipation circuit is studied, and the diagonalized Hamiltonian of the system has an additional nonlinear term which has not been reported in literature. This general canonical transformation may have physical significance for the study of quantum fluctuation and quantum noise in the multiple-loop coupled dissipative circuits.
Characteristics of Biofilm Phase During the Long-term Degradation of a Toluene-contaminated Gas Stream Using BTF

HU Jun,ZHENG Jiang-ling,WU Yue-xin,ZHANG Li-li,CHEN Jian-meng,

环境科学 , 2012,
Abstract: This study analyzes the accumulation and distribution of biomass and changes in properties of biofilm in a long-term biotrickling filter (BTF) system in order to investigate the correlation between the biofilm phase properties and the performance. After a long-term operation of 130 days, the BTF showed a deterioration in degradation performance and an increase in pressure drop with a gradual increase of biofilm thickness and uneven distribution of biomass. Meanwhile, the porosity of the upper and lower layers decreased from 85% and 82% in the start-up period to 65% and 40%, respectively, as a result of the excessive accumulation of biomass and its non-uniform distribution. The AWCD values showed a decreasing trend indicating that the biological activity decreased with the aging of biofilm in the long-term BTF. The contents of total extracellular polymeric substances (EPS) and protein in the later period were twice as much as those in the start-up period. The value of protein to polysaccharide (PN/PS) ratio increased from 0.3 to 0.95, and showed positive correlation with the surface hydrophobicity of the biofilm, which increased from 33% to 73% accordingly. The mean molecular weight of EPS decreased during the operation of BTF. The result of FTIR further showed that the main chemical composition of EPS changed in the long-term BTF accordingly, possibly resulting in the deterioration of performance in the long-term BTF. The above experimental results could be very helpful for reducing the clogging and performance deterioration in long-term BTF.
Variation of Surface Tension of Sodium Aluminate Solution with Electrolytic Microstructure

WANG Ya-jing,ZHAI Yu-chun,TIAN Yan-wen,HAN Yue-xin,LIU Lian-li,

过程工程学报 , 2003,
Abstract: Surface tension of sodium aluminate and Si-containing sodium aluminate solutions was measured by the air bubble method. Effects of factors such as molar ratio, temperature, Si added and aluminate concentration on surface tension were investigated. The results are explained in terms of Raman spectra and the sub-molecular structure of electrolytic solution.


物理学报 , 1990,
Abstract: In this article, we found that scaling properties of the cluster are changed by uniform external fields, when we adopted the model of diffusion-limited aggregation without branching to simulate the irrevesible aggregation of small particles in uniform external fields. The relationship between Hausdorff dimension D of the cluster and uniform external fields has been found: D = 2.50F0.37exp(-1.08F) + 1
Association between cytokine gene polymorphisms and recurrent spontaneous abortion

淦月薪, 张军, 陈丹
GAN Yue-xin

- , 2016, DOI: 10.3969/j.issn.1674-8115.2016.09.020
Abstract: 习惯性流产(RSA)定义为孕前20周连续3次或以上的流产。细胞因子是一类能在细胞间传递信息、具有免疫调节和效应功能的蛋白质或小分子多肽,影响妊娠的各个阶段,对妊娠结局起到至关重要的作用。鉴于细胞因子在母-胎免疫调节中的重要作用以及遗传多态对细胞因子功能和表达水平的潜在影响,近年来细胞因子遗传多态与复发性流产的关联研究成为国际研究的热点。这类研究目前存在诸多问题:不同研究关联结果不一致甚至相悖,细胞因子多态性在RSA中的作用难以确定;多在一项研究中发现少数的阳性报道,缺乏其他人群的验证,有假阳性的风险;病例-对照研究样本量小(<400例),统计效能偏低,容易造成假阴性结果;对于一个基因遗传多态位点研究不全面,极可能错过真正的致病位点;忽视了基因-基因交互作用和环境-基因交互作用对RSA的影响。因此,扩大样本规模、全面系统地研究细胞因子基因上代表性遗传多态,探讨基因-基因和基因-环境交互作用对复发性流产的影响,成为该研究领域的迫切需求。
: Recurrent spontaneous abortion (RSA) is defined as three or more consecutive abortions before 20 weeks of gestation. Cytokines are proteins or small molecular peptides for cell signaling, immune regulation and response, which affect all stages of pregnancy and play a vital role in pregnancy outcome. Because cytokines are very important in maternal-fetal immune regulation and genetic polymorphisms have potential impact on function and expression of cytokines, the association between cytokine genetic polymorphisms and RSA has become a hot topic of international research recently. There are some problems in reported studies. For example, the results of different studies are inconsistent or even conflicting, therefore it is difficult to determine the role of cytokine polymorphisms in RSA; most studies reported several positive cases and lack verification from other populations, thus the false positive risk may exist; the sample size of case-control studies was small (<400) with low statistical power, resulting in false negative findings; tagging single-nucleotide polymorphisms (SNPs) were not fully studied, thus the causal variants may be missed; the impact of gene-gene interaction and gene-environment interaction on RSA was not investigated. Therefore, increasing the sample size, systematically studying representative genetic polymorphisms, and exploring the impact of gene-gene and gene-environment interaction on RSA become an urgent need in this field
Different Transcriptional Response to Xanthomonas citri subsp. citri between Kumquat and Sweet Orange with Contrasting Canker Tolerance
Xing-Zheng Fu, Xiao-Qing Gong, Yue-Xin Zhang, Yin Wang, Ji-Hong Liu
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0041790
Abstract: Citrus canker disease caused by Xanthomonas citri subsp. citri (Xcc) is one of the most devastating biotic stresses affecting the citrus industry. Meiwa kumquat (Fortunella crassifolia) is canker-resistant, while Newhall navel orange (Citrus sinensis Osbeck) is canker-sensitive. To understand the molecular mechanisms underlying the differences in responses to Xcc, transcriptomic profiles of these two genotypes following Xcc attack were compared by using the Affymetrix citrus genome GeneChip. A total of 794 and 1324 differentially expressed genes (DEGs) were identified as canker-responsive genes in Meiwa and Newhall, respectively. Of these, 230 genes were expressed in common between both genotypes, while 564 and 1094 genes were only significantly expressed in either Meiwa or Newhall. Gene ontology (GO) annotation and Singular Enrichment Analysis (SEA) of the DEGs showed that genes related to the cell wall and polysaccharide metabolism were induced for basic defense in both Meiwa and Newhall, such as chitinase, glucanase and thaumatin-like protein. Moreover, apart from inducing basic defense, Meiwa showed specially upregulated expression of several genes involved in the response to biotic stimulus, defense response, and cation binding as comparing with Newhall. And in Newhall, abundant photosynthesis-related genes were significantly down-regulated, which may be in order to ensure the basic defense. This study revealed different molecular responses to canker disease in Meiwa and Newhall, affording insight into the response to canker and providing valuable information for the identification of potential genes for engineering canker tolerance in the future.
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