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Search Results: 1 - 10 of 104330 matches for " LIU Xin-Rui "
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Population differentiation of Mycogone perniciosa in Fujian, China
福建省有害疣孢霉菌Mycogone perniciosa的种群分化初探

WEN Zhi-Qiang,WANG Yu-Xi,LIU Xin-Rui,XIE Bao-Gui,
温志强
,王玉霞,刘新锐,谢宝贵

菌物学报 , 2010,
Abstract: Morphological characteristics of colonies and chlamydospores of 16 strains of Mycogone perniciosa isolated from cultivated Agaricus bisporus pilei in different counties of Fujian Province were observed, and ISSR molecular fingerprinting markers were employed to analyse the genetic diversity of these strains. It was indicated that the morphological characteristics of colonies and chlamydospores of these strains could be classified into 3 categories. The results of ISSR analysis also showed that these strains could be divided into three cladogram, corresponding to the conclusion of morphological characteristics. It was primarily believed that there were three populations of Mycogone perniciosa in Fujian Province.
The application of the ''bidirectional haploid nuclei migration'' in breeding and genetics of Lentinula edodes
双向核迁移在香菇遗传和育种中的应用研究

LIU Jing-Yu,LIU Xin-Rui,DENG You-Jin,LIU Fang,XIE Bao-Gui,
刘靖宇
,刘新锐,邓优锦,刘芳,谢宝贵

菌物学报 , 2011,
Abstract: Monokaryon mating tests between different strains of Lentinula edodes were carried out,and two pair dikaryotic strains were obtained by utilizing the mechanism of 'bidirectional haploid nuclei migration'.The strains were purified by isolation of single hyphal tips of dikaryotic strains and making use of 'Buller phenomenon'.Two pairs of monokaryotic and dikaryotic strains were analyzed by observations of colony shapes,microscopic examination,fruiting tests,and molecular markers.The results showed that the st...
Effects of imidacloprid spraying on the population dynamics of main insect pests and natural enemies on alfalfa
蚜虱净对苜蓿主要害虫及天敌种群数量的影响

LIU Chang-Zhong,YAN Lin,ZHANG Xin-Rui,CHEN Ying-Wu,ZHANG Fang,
刘长仲
,严林,张新瑞,陈应武,张方

生态学报 , 2008,
Abstract: The effect of imidacloprid spray on the population dynamics of primary insect pests and their natural enemies in alfalfa fields was evaluated in DingXi, Gansu Province in 2002. The average number of aphids and thrips across the entire post-spray period (From late May to August 2002) was significantly higher in imidacloprid-treated fields than in untreated fields, while the average number of plant bugs and most natural enemies including coccinellids, Orius minutus, and spiders was drastically reduced in the treated fields. The average population size of parasitic wasps was not significantly different in the treated fields compared with untreated fields across the entire post-spray period. It appeared that imidacloprid spray differentially affected the population dynamics among different insect pests and natural enemies. On the seventh day post-spray in late May, the populations of aphids and thrips in the treated fields were 4.13-fold and 5.2-fold lower than in the untreated fields, respectively. However, these pest populations recovered and increased rapidly in the treated fields. The population numbers were similar by the end of June and even significantly higher than the untreated fields by mid-July. For plant bugs, the population was significantly inhibited in the treated fields in late May, but by late July the population recuperated to untreated-field level. The natural enemies investigated were significantly affected in the treated fields compared with the untreated fields during the period from the imidacloprid spray performed in late May to the end of July. Most natural enemy populations recovered and reached untreated-field levels by early August These observations suggest that imidacloprid spray inhibited insect pest populations only temporarily. Pest populations recovered rapidly resulting in even more serious pest infestation occurring in the late season because of negative impacts of pesticide spray upon the natural enemies.
Isolation and identification of a bacterial strain JS018 capable of degrading several kinds of organophosphate pesticides
一株能高效降解几种有机磷农药的菌株JS018的鉴定

JIANG Yu-ji,DENG You-jin,LIU Xin-rui,XIE Bao-gui,HU Fang-ping,
江玉姬
,邓优锦,刘新锐,谢宝贵,胡方平

微生物学报 , 2006,
Abstract: Organophosphate pesticides are used widely all over the world and play an important role in plant pest control. However these pesticides are considered as pollutants and harmful to human health. To search for microorganisms that can degrade organophosphate pesticides with high efficiency, a bacterial strain, coded as JS018, was isolated and screened from the soil in the vicinity of Shanming Pesticides Factory, Shanming, Fujian. Laboratory tests showed that the bacterium could degrade several kinds of organophosphate pesticides, such as Parathion-methyl and phoxin. The strain's degrading rates on phoxin, Parathion-methyl, hostathion and dichlorvos in LB liquid fermentation medium for 36 h were 99%, 96%, 80.4% and 69.0% respectively. The bacterial colonies on LB plate appeared shiny and pale-pink in color. The bacteria were Gram-negative coccoids, 0.5 - 0.7 microm in diameter. They grew well at 30 - 38 degrees C and pH 7.0 - 9.0. The optimal temperature and pH for cell growth was 32 degrees C and pH 7.5 - 8.0, respectively. They did not grow in medium containing 6% or more NaCl. The antibiotic susceptibility tests showed that the strain was resistant to ampicillin, penicillin and lincomycin. It was sensitive to kanamycin, tetracycline and gentamicin. Laboratory tests also showed that the strain could ferment D-glucose, trehalose, melezitose and ethanol. It was negative in the production of indole and hydrogen sulfide. It could not liquefy gelatin, utilize citrate, nor ferment L-arabinose, sucrose, D-mannitol, D-xylose, fructose, D-galactose, maltose or lactose. The catalase, urease and nitrate reduction were positive. Based on its morphological, physiological and biochemical properties as well as the 16S rDNA sequence analysis result, the strain was tentatively identified as Roseomonas sp.
Analysis of genetic diversity among germplasm resource of 57 strains of Coprinus comatus
57株毛头鬼伞遗传多样性分析

JIANG Yu-Ji,XIE Bao-Gui,DENG You-Jin,LIU Xin-Rui,JIANG Hong,
江玉姬
,谢宝贵,邓优锦,刘新锐,江洪

菌物学报 , 2013,
Abstract: 运用SRAP、RAPD、ISSR 3种分子标记技术对来源不同地区的57株毛头鬼伞Coprinus comatus进行了遗传多样性分析,通过3种分子标记进行聚类分析,当相异系数D为0.48时,可以把57株毛头鬼伞分为4类:Ⅰ类包括Co0001;Ⅱ类包括Co0003;Ⅲ类包括Co0005;Ⅳ类包括其余54个菌种。供试的57个菌株间的相异系数范围从0–0.72,具有一定的遗传多态性。但其中有许多菌株两者之间的相异系数为0,说明毛头鬼伞菌种存在着比较严重的同种异名现象。
See-Saw Modification of Gravity
Gia Dvali,Gregory Gabadadze,Xin-rui Hou,Emiliano Sefusatti
Physics , 2001, DOI: 10.1103/PhysRevD.67.044019
Abstract: We discuss a model in which the fundamental scale of gravity is restricted to 10^{-3} eV. An observable modification of gravity occurs simultaneously at the Hubble distance and at around 0.1 mm. These predictions can be tested both by the table-top experiments and by cosmological measurements. The model is formulated as a brane-world theory embedded in a space with two or more infinite-volume extra dimensions. Gravity on the brane reproduces the four-dimensional laws at observable distances but turns to the high-dimensional behavior at larger scales. To determine the crossover distance we smooth out the singularities in the Green's functions by taking into account softening of the graviton propagator due to the high-dimensional operators that are suppressed by the fundamental scale. We find that irrespective of the precise nature of microscopic gravity the ultraviolet and infrared scales of gravity-modification are rigidly correlated. This fixes the fundamental scale of gravity at 10^{-3} eV. The result persists for nonzero thickness branes.
An overview of phylogenetic relationship between Mus and Microtus
小鼠属(Mus)与田鼠属(Microtus)的系统发生关系研究概述

ZHANG Xin-Rui,XIANG Xue-Jun,CHEN Yan-Qiu,LIU Huan-Min,WANG Yu-Feng,YAN Nan,ZHU Bi-Cai,
张新蕊
,相学军,陈艳秋,刘焕民,王宇峰,闫楠,朱必才

遗传 , 2008,
Abstract: Muriod is the most successful one among rodents struggling for existence, and biologists have been paying much attention to it, especially Mus musculus. Because of the thorough study on Mus musculus, it has been widely applied in lab, and becomes a good material for studying other animals. Phylogenetic relationship between different species and populations of Mus and Microtus are more clearly revealed with some genetic markers of modern genetics, such as protein, mtDNA, and rDNA. Taxonomy and evolution of species of both genus have also been revealed. Whereas the taxonomy and genetic relationships of some species and populations between both genus need to be further studied.
A Comparison of Fusing Methods of ETM+ and SPOT-5 PAN Images for Geohazrd Detection
地质灾害调查中ETM+与SPOT-5 Pan融合方法比较

XU Ling,YANG Xin-rui,CHEN Jian,
许领
,杨馨蕊,陈剑

遥感技术与应用 , 2008,
Abstract: ETM 与SPOT-5Pan融合影像合有丰富的光谱信息和空间结构信息,是地质灾害调查的理想数据源.但ETM 多光谱图像与SPOT-5 Pan图像空间分辨率相差悬殊,直接融合可能导致融合影像色彩模糊、色调不和谐等问题;若将ETM 与其金色融合后再与SPOT-5 Pan融合,如果融合方法不当亦会造成光谱信息的过多损失.通过采用IHS、Brovey、PCA和Gram-Schmidt变换分别对ETM 和SPOT-5 Pan按上述两种途径进行直接和间接融合,采用主观评定以及光谱剖面分析对融合影像进行了评价,从而筛选出适合于地质灾害调查的ETM 与SPOT-5 Pan融合方法.
The Prediction of China's Steel Demand Based on S-shaped Regularity
基于“S”规律的中国钢需求预测

GAO Xin-rui,WANG An-jian,
高芯蕊
,王安建

地球学报 , 2010,
Abstract: 本文基于人均钢消费量与人均GDP“S”形规律, 对典型发达国家工业化过程钢消费量峰值年份进行截面分析, 并依据我国经济增长发展目标厘定高、参考及低三种方案, 解析中国未来钢需求, 结论是: 按高增长方案, 我国人均钢消费峰值点将在2015年到达, 届时人均钢消费量480~500千克, 消费总量6.7~7亿吨; 按参考方案, 我国人均钢消费峰值点将在2015-2016年到达, 届时人均钢消费量430~470千克, 消费总量为6~6.5亿吨; 按低增长方案, 我国人均钢消费峰值点将在2017-2018年到达, 届时人均钢消费量400~440千克, 消费总量为5.6~6.1亿吨。
Investigations on the structural and optical properties of silicon nanoporous pillar array
硅纳米孔柱阵列的结构和光学特性研究

Xu Hai-Jun,Fu Xiao-Nan,Sun Xin-Rui,Li Xin-Jian,
许海军
,富笑男,孙新瑞,李新建

物理学报 , 2005,
Abstract: A novel silicon-based micron/nanometer structural composite system, silicon nanoporous pillar array(Si-NPA), was prepared on the substrate of single-crystal si licon (sc-Si) wafers by a hydrothermal etching method; and the studies on its mo rphological structural and optical properties were carried out. Structural exper iments disclose that Si-NPA could be well described by triple hierarchical struc tures: the array composed of micron-sized silicon pillars, the nanopores densely distributing on each pillar, and the silicon nanocrystallites constructing the walls of nanopores. Optical measurements prove that Si-NPA has good performances on light absorption and photoluminescence(PL). Based on the experimental data o f the integral reflectance spectrum, the structural and optical parameters such as complex refractive index, complex dielectric constant and absorption coeffici ent of Si-NPA are calculated by adopting Kramers-Kronig transformation; based on which, the origin of the notable difference between the optical properties of S i-NPA and sc-Si is discussed. Through analyzing the function relation between th e absorption coefficient of Si-NPA and the photon energy of incident light, the characteristic of the electronic structure of Si-NPA is proved to be that of a d irect-band-gap semiconductor, and the calculated bandgaps agree well with the PL peak energies given by experiments.
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