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Search Results: 1 - 10 of 42589 matches for " Xu Xusong "
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LEXICOGRAPHIC SORT OF RECORD OF VARYING LENGTH USING A NEW FORMULA TO DIVIDE STRING INTO GROUPS FORMED INDEX
不等长记录的公式索引分组字典排序

Xu Xusong,Zhou Jianqin,
徐绪松
,周建钦

软件学报 , 1991,
Abstract: This paper provides a lexicographic sort algorithm. Using a new build formula to divide strings into groups and to form an index. Algorathm sort a sequence of n elements in O(n) expected time. In an essential manner, without the comparison between the elements in traditional algorithm. The new method uses the new formula to calculate, getting the result of the sort directly.
Determination of ginkgolic acids in Ginkgo biloba leaves by gas chromatography with on-line pyrolytic methylation
热辅助下的在线甲基衍生化-气相色谱法分析银杏叶中的银杏酸

WANG Lili,PAN Zaifa,XU Hongxing,ZHENG Xusong,L,
王丽丽
,贾以律,潘再法,徐红星,郑许松,吕仲贤

色谱 , 2008,
Abstract: 采用热辅助下的在线甲基衍生化-气相色谱法测定银杏叶中的银杏酸。银杏叶样品与衍生化试剂四甲基氢氧化铵(TMAH,25%甲醇溶液)同时进样,在300℃的进样口瞬间生成了银杏酸甲基衍生物,银杏叶中6种银杏酸得到很好的分离。在一定的质量浓度范围内银杏酸的线性关系良好,回归系数均大于0.9966,最低检出限范围为0.8~2.8mg/kg。银杏叶中主要的烷基酚类物质为银杏酸C13∶0,C15∶1和C17∶1,它们的含量(用质量分数表示)分别为11.0%,36.7%和42.8%,3次平行测定的相对标准偏差(RSD)均小于3.4%(n=3)。银杏叶样品中总银杏酸的含量为4.0~10.9mg/g。该方法无需繁琐费时的衍生化和纯化等前处理步骤,不失为银杏叶中银杏酸测定的一种快速、简便、准确的方法。
大 组 织 理 论 研 究
The Overview of Big Organization

郑湛,徐绪松,朱国宾,赵伟,郑小京
ZHENG Zhan
,XU Xusong,ZHU Guobin,ZHAO Wei,ZHENG Xiaojing

- , 2015,
Abstract: 摘要 提出“大组织”这一个使得组织具有智慧的宏观动态管理理论,给出了大组织智慧的含义,以及使得组织成为智慧型组织的大组织五边形智能结构,包括:视角(宽阔的视野看待组织行为)、观念(全新的观念认识组织)、运作模式(把优秀资源吸引到组织中来,能够产生群聚效应的引力型运作模式)、平台(将自身的核心竞争力与其他的组织优势互补,共创价值的平台生态系统)、理念(从人性出发,通过关爱强大组织自身)
面向互联网时代的组织架构、运行机制、运作模式研究
Research on the Organization Structure, Operation Mechanism and Operation Mode for the Internet Era

郑湛,徐绪松,赵伟,马海超,陈达
ZHEN Zhan
,XU Xusong,ZHAO Wei,MA Haichao,CHEN Da

- , 2019,
Abstract: 摘要 应用大组织理论和复杂科学管理的理论方法,对互联网时代的特征、组织模式进行探析。研究结果表明,互联网时代的大数据、大连接、大合作特点对传统企业组织带来4个方面的转变,即以协同为核心的资源观打破了传统的封闭的资源观;大组织的组织-环境价值体系打破了传统的组织-个体价值体系;非线性思维方式打破了传统的线性思维方式;关系管理模式打破了传统的集中管理模式。提出互联网时代的企业组织创新,包括组织架构的创新——无边界的网络化组织架构;组织运行机制的创新——自我运行的运行机制;组织运作模式的创新——群聚运作模式
模拟干旱胁迫对稻虱缨小蜂的影响
Effects of simulated drought stress on the ecological fitness of Anagrus nilaparvatae Pang et Wang

徐红星,于莹,郑许松,杨亚军,吕仲贤,Xu Hongxing,Yu Ying,Zheng Xusong,Yang Yajun,Lü Zhongxian
- , 2017, DOI: 10.13802/j.cnki.zwbhxb.2017.2015148
Abstract: 为明确干旱胁迫对稻虱缨小蜂Anagrus nilaparvatae Pang et Wang生态适应性的影响,采用不同浓度的聚乙二醇(polyethylene glycol,PEG)6000模拟干旱生境,研究了干旱胁迫对稻虱缨小蜂生长发育、繁殖的影响,并观察了稻虱缨小蜂对感虫品种TN1和抗虫品种IR36水稻上褐飞虱Nilaparvata lugens St?l卵的选择情况。结果表明,稻虱缨小蜂幼虫的发育历期随PEG6000浓度的升高而延长;成虫寿命则随着PEG6000浓度的升高而缩短,经20% PEG6000处理7 d后雌蜂寿命最短,在TN1和IR36水稻上分别为25.1 h和25.4 h;经20% PEG6000胁迫处理7 d后,在TN1、IR36水稻上稻虱缨小蜂的平均卵寄生量最低,分别为10.9粒和8.1粒。与20% PEG6000处理相比,稻虱缨小蜂对未经干旱胁迫处理水稻上的褐飞虱卵具有明显的选择性。研究表明,模拟干旱胁迫能降低稻虱缨小蜂生态适应性,且降低对褐飞虱卵的寄生力和选择性。
To study the ecological fitness and selectivity of Anagrus nilaparvatae Pang et Wang under varied drought stress, the development of A. nilaparvatae, the selectivity and parasitic capacity of A. nilaparvatae to brown planthopper (BPH), Nilaparvata lugens St?l, on different rice varieties TN1 and IR36 simulated by polyethylene glycol 6000 (PEG6000) were determined in the laboratory. The results showed that the nymphal duration of A. nilaparvatae was obviously prolonged with the concentration of PEG6000 increasing; however, the longevity of the female adult was shortened. The longevity of female adults treated by 20% PEG6000 for seven days was the shortest among different treatments, and the shortest longevities of female adults on TN1 and IR36 were 25.1 h and 25.4 h, respectively. The parasitic capacity of A. nilaparvatae treated by 20% PEG6000 for seven days was lower than that in the other treatments, and the parasitic capacity of A. nilaparvatae on TN1 and IR36 were 10.9 and 8.1 per female, respectively. Compared with the TN1 and IR36 rice plants treated by 20% PEG6000, the female adults had significant selectivity to BPH eggs on the rice plants untreated by drought stress. The results indicated that simulated drought stress not only reduced the ecological fitness of A. nilaparvatae, but also decreased its selectivity and parasitic capacity.
中国水稻纵卷叶螟防控技术进展
Progresses in management technology of rice leaffolders in China

杨亚军,徐红星,郑许松,田俊策,鲁艳辉,吕仲贤,Yang Yajun,Xu Hongxing,Zheng Xusong,Tian Junce,Lu Yanhui,Lü Zhongxian
- , 2015, DOI: 10.13802/j.cnki.zwbhxb.2015.05.002
Abstract: 水稻纵卷叶螟是我国水稻上的重要害虫,近年来给我国水稻生产造成了严重损失。目前,我国水稻纵卷叶螟主要有2种,即稻纵卷叶螟Cnaphalocrocis mendinalis (Guenée)和稻显纹纵卷叶螟Cnaphalocrocis exigua (Butler)。本文分别从生态学特性、测报技术和防控技术等方面对水稻纵卷叶螟的防控技术进展进行了综述。水稻纵卷叶螟的防控要坚持"绿色植保"理念,推行害化治理;且应在测报数据分析的基础上,充分利用农业与物理防治和生物防治相结合的方法,并配以生态工程技术进行综合治理,以达到减药控害的目的。
Rice leaffolders are important insect pests in paddy fields in China. Their damages caused heavy loss on the rice production. In China, there are two species of rice leaffolders, Cnaphalocrocis mendinalis (Guenée) and Cnaphalocrocis exigua (Butler). In recent years, many researchers have studied the rice leaffolders and their control technologies. This paper reviewed the related researches on ecological properties, forecast technologies and control technologies of rice leaffolders. Forecast is important for mastering the population information and providing alarm for the pest management. Under the implementing of "greener plant protection", the agricultural, physical control and biological control methods were encouraged with the technologies of ecological engineering to cater to the aim of reduction in insecticide use and damage by rice leaffolders.
Adaptation of Sogatella furcifera to insect-resistant rice variety N22
白背飞虱对水稻抗虫品种N22的适应性研究

Jianming Chen,Xiaoping Yu,Zhongxian Lu,Linyong Tao,Xusong Zheng,Hongxing Xu,Jia''an Cheng,
陈建明
,俞晓平,吕仲贤,陶林勇,郑许松,徐红星,程家安

应用生态学报 , 2003,
Abstract: The adaptation of whitebacked planthopper (WBPH) Sogatella furcifera to insect-resistant rice variety N22 and the variation of its protective enzyme were studied by rearing it successively two generations on N22 and insect-susceptible rice variety TN1 in laboratory. The results showed that after reared on TN1 or N22 for one or two generations, its egg period, nymphal duration, and total generation period had no significant difference. The ecological parameters, e.g., nymphal survival rate, body weight, amount of honey dew, egg number, and innate increasing rate of WBPH transferred from TN1 to N22 and reared for one generation were lower than those of WBPH reared on N22 successively for two generations, and the latter was lower than that reared on TN1. The activities of superoxide dismutase (SOD) and catalase (CAT) in protective enzyme system of the 2nd generation WBPH on N22 were similar to those of the pest on TN1, indicating that S. furcifera could adapt to insect-resistant variety N22 after rearing it successively for several generations.
Tolerance of rice varieties to whitebacked planthopper Sogatella furcifera and variation of nutrient components in rice plants
水稻品种对白背飞虱的耐虫性反应及稻株营养成分的变化

Jianming Chen,Xiaoping Yu,Zhongxian Lü,Xusong Zheng,Hongxing Xu,Jia''an Cheng,Guangjie Liu,
陈建明
,俞晓平,吕仲贤,郑许松,徐红星,程家安,刘光杰

应用生态学报 , 2003,
Abstract: The study showed that the rice varieties N22, Luyuanzhan No. 1 and 94D-22 had a stronger tolerance to Sogatella furcifera, while Mudgo and K89-B5 had a weaker tolerance. The varieties Ptb33 and Zhongzu 74 were of antibiosis, and susceptible varieties Xiushui 11, Shanyou 63 and susceptible check varieties TN1 had no tolerance. After rice plants were infested by S. furcifera, the percentages of nitrogen content (N%) and soluble sugar content (S%) in tolerant varieties increased, but the ratio of nitrogen content to soluble sugar content (N/S) decreased obviously. For susceptible varieties, the variations of N%, S% and N/S were opposite to those of the tolerant varieties. In different varieties the contents of most kinds of free amino acid increased at various degrees, but those of alanine in susceptible variety TN1, alanine, threonine and methionine in tolerant varieties N22, and arginine in resistant variety Ptb33 decreased.
我国水稻害虫绿色防控技术的研究进展与应用现状
Advances in the development and application of control technologies for insect pest management in paddy fields in China

徐红星,郑许松,田俊策,赖凤香,何佳春,吕仲贤,Xu Hongxing,Zheng Xusong,Tian Junce,Lai Fengxiang,He Jiachun,Lü Zhongxian
- , 2017, DOI: 10.13802/j.cnki.zwbhxb.2017.2016101
Abstract: 化学农药是有效控制病虫草危害、保障粮食安全的重要手段。然而,长期不合理地使用化学农药带来了许多弊端,如“3R”问题(抗药性、残留和害虫再猖獗)等。本文分别从减少虫源基数、降低害虫种群发展速度、提高农田环境对害虫的控制能力、生物防治技术以及应急性化学防治技术等5个方面综述了我国水稻害虫绿色防控技术的研究与应用现状,目的在于通过保护生物多样性,增强天敌的自然控制能力,建立健康的稻田生态系统,从根本上改变单纯依赖化学农药的状况。各地可根据当地环境、气候条件和水稻病虫害发生特点等,因地制宜地组建适用的绿色防控技术体系,并开展示范区建设和多形式、多层次的技术培训,扩大技术推广应用的规模,达到减药控害的目标。
The chemical pesticides have played important roles in controlling pests, reducing the hazards and ensuring food security, while long-term irrational use of chemicals resulted in many disadvantages such as 3R problem (Resistance, Residue and Resurgence). This paper reviewed the research and application technologies of ‘Green Plant Protection’ on pest management in paddy fields in China based on reducing the initial population size of rice insect pests, decreasing population growth rate of rice insect pests, increasing environmental resistance to insect pests in rice-based ecosystem, application of biological control agents and chemical control for emergency. A suitable green control technology system should be set up in different places by selection of different technologies based on local conditions, climatic conditions and characteristics of rice pests. Then, it is encouraged to promote the application of the suitable green control technology system with demonstration area construction and multiform, multi-level training to cater to the aim of reduction in chemical insecticide use and damage by rice insect pests.
Determination of γ-Aminobutyric Acid and Glutamate in Human Gastric Mucosa by High Performance Liquid Chromatography
人胃粘膜中γ-氨基丁酸和谷氨酸含量的高效液相色谱法测定

TAN Li~,LIU Fangnan~,ZHANG Xusong~,
谭力
,刘放南,张旭松

色谱 , 2004,
Abstract: A method for analysis of gamma-aminobutyric acid (GABA) and glutamate (Glu) in human gastric mucosa by high performance liquid chromatography (HPLC) was developed. A gradient elution was used for the separation and quantification of GABA and Glu after pre-column derivatization with phenylisothiocyanate (PITC). The column was Pico x Tag for free amino acids. GABA and Glu were determined with UV detector at 254 nm. Good linearities were observed within the ranges from 0.125 to 6.25 micromol/L for GABA and from 0.025 to 2.5 mmol/L for Glu. The average recoveries were 95.4% for GABA and 93.5% for Glu. The intra- and inter-precision values were within 3.56% and 7.47% for GABA, and 1.12% and 5.98% for Glu, respectively. The method is sensitive, specific and accurate. It can be used in the determination of GABA and Glu in human gastric mucosa tissue. The concentrations of GABA and Glu in cancer tissues are significantly higher than those in normal tissue.
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