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Search Results: 1 - 10 of 26458 matches for " Shi-Heng An "
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Climate change and its effects on agricultural ecology during the recent 40 years in Songnen Plain

Zu Shi-heng,

中国生态农业学报 , 1996,
Abstract: Based on systematic analysis of 40 years' complete meteorological data from 30 stations as well as the agricultural output information in Songnen Plain,one of the dry farming regions in Northern China,it was concluded that the climate in this plain was actually warming up,which lead to the split up of the high production areas to south and to north in the plain,that is the high yield area of corn gradually moving to south,and wheat and bean to north.Thus the changes in agricultural production should be paid attention to when working out strategies for agricultural development.
Simulation and Calculation of the Penetration Depth and Concentration Distribution for Titanium ions with Low Energy Implanted into the Dry Cotton seed

WANG Lin-Xiang WANG Shi-Heng,

植物学报 , 2005,
Abstract: Much experimental research into ions with low energy implanted into plant seeds has been conducted, yet the optimal mechanism to induce aberrance has not been found. One focus is depth-concentration distribution for ions with low energy implanted into the seeds. Many investigators have used LSS theory and the TRIM program directly to calculate the distribution of ions implanted into seeds but find that calculation results are not good for experimental results, so they conclude that LSS theory and TRIM program cannot be used directly for calculation of specific targets such as heterogeneous, incompact, loose and porous seeds. Aiming at this research task, we deal with these targets and correct LSS theory according to the distinguishing texture of plant seeds, using the Monte-Carlo method to calculate the penetration depth and concentration distribution for titanium ions with 20 keV energy implanted into dry cotton seed. We find a better curve, with calculation results from theory matched with those calculated by experimentation and preliminarily obtain a omputational method about depthconcentration distribution for ions with low energy implanted into seeds.
New algorithm for global optimization: cell membrane optimization

TAN Shi-heng,YU Wei-yu,

计算机应用研究 , 2011,
Abstract: By studying the characteristics of cell membrane and the mode of material transfer, proposed a new global optimization algorithm: cell membrane optimization (CMO), combined with global optimization algorithm. Numerical experiments proved CMO had excellent global optimization capability, rapid convergence and the ability to obtain accurate solution. Compared with the standard particle swarm optimization (PSO) and population migration algorithm (PMA). The simulation results show that CMO has better convergence performance in solving high-dimensional optimization problems.
Automated Testing Method for Financial Reporting System Based on Rule Statement

ZHANG Shi-Heng,LUO Sheng-Xian,

计算机系统应用 , 2010,
Abstract: By studying the financial report system, an auto-test method of the financial report system is put forward and realized based on the "Rule Statements" in this paper. The auto-test platform supported by this method has been applied in some large financial institutions, and the application results are proved good.
Characteristic analysis of fundus fluorescein angiography and optical coherence tomography findings in uveitis#br#

, YAN Yan, LI Zhen, LU Shi-heng

- , 2017, DOI: 10.3969/j.issn.1674-8115.2017.12.013
Abstract: 目的 · 分析葡萄膜炎患者的荧光素眼底血管造影(FFA)和光学相干断层扫描(OCT)的特点。方法 · 纳入上海交通大学 医学院附属仁济医院2015 年 4 月—2017 年 8 月收治的84 例(135 眼)葡萄膜炎患者,总结分析FFA 和 OCT 检查的图像特征。 结果 · 84 例葡萄膜炎患者,平均年龄(44±10)岁,男性多于女性。双眼同时或先后发病的有 51 例(102 眼),单眼发病的有 33 例 (33 眼)。 FFA 检查可见常见表现为视盘强荧光(73%)和血管壁染色(50%); OCT 检查可见患者表现为黄斑囊样水肿(23%)和神 经上皮脱离(21%)。 OCT 检查所示的常见阳性表现的比例(10% ~ 40%)低于 FFA 检查所示的常见阳性表现的比例(23% ~ 100%) (χ2=33.8,P=0.000)。 结论 · 葡萄膜炎常见于中青年男性,FFA 检查发现常见的表现为视盘强荧光、血管壁染色,OCT 检查发现常见 的表现为黄斑囊样水肿、神经上皮脱离。
:Objective · To investigate the characteristics of fundus fluorescein angiography (FFA) and optical coherence tomography (OCT) findings of patients with uveitis. Methods · The clinical data of 84 patients (135 eyes) diagnosed as uveitis in Renji Hospital, Shanghai Jiao Tong University School of Medicine from Apr 2015 to Aug 2017 were studied retrospectively. FFA and OCT examinations were performed. Results · Of 84 patients, the average age was (44±10) years old. There were more males than females. Fifty-one patients (102 eyes) were affected bilaterally, and 33 patients (33 eyes) were affected unilaterally. Optic fluorescence leakage was found in 73% of patients, and retinal vascular wall staining was found in 50% of patients by FFA. Cystoid macular edema was found in 23% of patients, and neuroepithelial detachment was found in 21% of patients by OCT. The proportion of common positive manifestation by OCT (10%–40%) was lower than that by FFA (23%–100%) (χ2=33.8, P=0.000). Conclusion · The uveitis usually occurs in young and middle-aged male patients. The most common features of the uveitis patients are optic fluorescence leakage and retinal vascular wall staining by FFA, and cystoid macular edema and neuroepithelial detachment by OCT
Running away experience and psychoactive substance use among adolescents in Taiwan: multi-city street outreach survey
Shi-Heng Wang, Wen-Chun Chen, Chih-Yin Lew-Ting, Chuan-Yu Chen, Wei J Chen
BMC Public Health , 2010, DOI: 10.1186/1471-2458-10-29
Abstract: Participants were drawn from the 2004-2006 nationwide outreach programs across 26 cities/towns in Taiwan. A total of 17,133 participants, age 12-18 years, who completed an anonymous questionnaire on their experience of running away and substances use and who were now living with their families, were included in the analysis.The lifetime risk of tobacco, alcohol, betel nut, and illegal drug/inhalant use increased steadily from adolescents who had experienced a trial runaway episode (one time lasting ≤ 1 day), to those with extended runaway experience (≥ 2 times or lasting > 1 day), when compared to those who had never ran away. Adolescents who had their first running away experience > 6 months previously had a greater risk of betel nut or illegal drug/inhalant use over the past 6-months than those with a similar experience within the last 6 months. Both alcohol and tobacco use were most frequently initiated before the first running away, whereas both betel nut and illegal drug/inhalant use were most frequently initiated after this event. When adolescents who were fleeing an unsatisfactory home life were compared to those who ran away for excitement, the risk of alcohol use was similar but the former tended to have a higher risk of tobacco, betel nut, and illegal drug/inhalant use.More significant running away and a longer time since the first absconding experience were associated with more advanced substance involvement among adolescents now living in a family setting. Once adolescents had left home, they developed additional psychoactive substance problems, regardless of their reasons for running away. These findings have implications for caregivers, teachers, and healthcare workers when trying to prevent and/or intervening in adolescent substance use.Runaway or homeless adolescents are a high risk group for using a variety of psychoactive substances [1,2]. The greater availability of illegal psychoactive substances and the tremendous stress faced on the streets inc
Bioassays on selection and feeding responses of Holotrichia oblita adults to different plant species

Wei-Zheng Li,Ying-Hua Yuan,Shi-Heng An,Guo-Hui Yuan,Mei-Hao Luo,Xian-Ru Guo,

生态学报 , 2009,
Abstract: Bioassays on selection and feeding responses of Holotrichia oblita adults to different plant species were conducted both in laboratory and under field conditions. The selection response bioassay showed that the adults were significantly attracted to Ricinus communis. In paired tests of the field cages, more than 60% adults were attracted to R. communis plants, while only 35.55%, 34.45%, 33.35%, and 26.65% were attracted to plants of Glycine max, Arachis hypogaea, Ipomoea batatas, and Gossypium hirsutum, respectively. In the laboratory, the selection response percentage of the adults to R. communis leaves reached up to 93% in the presence of other host plant leaves and still arrived at 70% in the absence of other host plant leaves. Feeding deterrence bioassay showed that the adults preferred to I. batatas leaves with 229.90 ± 4.25 mg leaf consumption and 41.30 ± 5.19 mg faeces excretion after 12 h, followed by the leaves of G. hirsutum and A. hypogaea. The adult did not prefer leaves of R. communi with only 7.10 ± 0.23 mg leaf consumption and corresponding 4.00 ± 0.84 mg fecal excretion. In summary, all experimental results suggested that the attraction of H. oblita adults to R. communi is not triggered for feeding.
Division of winter wheat planting area based on climate in Heilongjiang Province

ZU Shi-Heng,QU Cheng-Jun,GAO Ying-Zi,ZHOU Yong-Ji,

中国生态农业学报 , 2001,
Abstract: According to the field experiments, production surveys, and the climate data of Heilongjiang Province in the past few years, five agricultural meteorological indexes including the winter cold, depth of snow accumulation, water content in the soil, temperature and wind speed in the turn green period, spring cold are put farward, which affects the safety of winter wheat during wintertime. These five indexes for the main index and other indexes for amending index, three winter wheat bands in Heilongjiang Province are divided including growing band, risk band and undaptable band. The production suggestions to develop the winter wheat are provided also in Heilongjiang Province.
Entropy characters of neighboring sites mutation

ZHANG Yin-xia,CAO Zuan,YUAN Zhi-fa,TAO Shi-heng,

浙江大学学报(农业与生命科学版) , 2010,
Abstract: For discussing the entropy characters of two neighboring sites mutation at the molecular level,a set of differential equations were founded about two neighboring sites mutations of a DNA sequences with limited length,based on the two-parameter model,and the function was got which could describe the processes of variation in quantity of 16 kinds of base combinations in the DNA sequence.The conclusions were proved that neighboring sites mutations maintained their entropy and species evolve in the direction of...
Inference of Cross-Level Interaction between Genes and Contextual Factors in a Matched Case-Control Metabolic Syndrome Study: A Bayesian Approach
Shi-Heng Wang, Wei J. Chen, Lee-Ming Chuang, Po-Chang Hsiao, Pi-Hua Liu, Chuhsing K. Hsiao
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0056693
Abstract: Genes, environment, and the interaction between them are each known to play an important role in the risk for developing complex diseases such as metabolic syndrome. For environmental factors, most studies focused on the measurements observed at the individual level, and therefore can only consider the gene-environment interaction at the same individual scale. Indeed the group-level (called contextual) environmental variables, such as community factors and the degree of local area development, may modify the genetic effect as well. To examine such cross-level interaction between genes and contextual factors, a flexible statistical model quantifying the variability of the genetic effects across different categories of the contextual variable is in need. With a Bayesian generalized linear mixed-effects model with an unconditional likelihood, we investigate whether the individual genetic effect is modified by the group-level residential environment factor in a matched case-control metabolic syndrome study. Such cross-level interaction is evaluated by examining the heterogeneity in allelic effects under various contextual categories, based on posterior samples from Markov chain Monte Carlo methods. The Bayesian analysis indicates that the effect of rs1801282 on metabolic syndrome development is modified by the contextual environmental factor. That is, even among individuals with the same genetic component of PPARG_Pro12Ala, living in a residential area with low availability of exercise facilities may result in higher risk. The modification of the group-level environment factors on the individual genetic attributes can be essential, and this Bayesian model is able to provide a quantitative assessment for such cross-level interaction. The Bayesian inference based on the full likelihood is flexible with any phenotype, and easy to implement computationally. This model has a wide applicability and may help unravel the complexity in development of complex diseases.
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