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Search Results: 1 - 10 of 50406 matches for " GAO Yuan-Gang "
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Ecological Effects and Fate of Fluoroquinolones Residues in Soil
土壤中氟喹诺酮类药物残留的生态效应及归宿

GAO Yuan-Gang,XIANG Yun-Bin,CHEN Jing-Yuan,YU Zhi-He,
高元钢
,向云彬,陈京元,余知和

微生物学通报 , 2008,
Abstract: Fluoroquinolones are synthetic antimicrobial agents that are active against a broad spectrum of pathogenic Gram-negative and -positive bacteria by selectively inhibiting DNA gyrase and used in a wide variety in clinic because of their good pharmic kinetics and curing effects, thus causing environmental pollution. The physicochemical characteristics of fluoroquinolones and their environmental effect, identification, monitoring and bioremediation in soil were summarized in this paper.
Ecological Effects and Fate of Fluoroquinolones Residues in Soil
土壤中氟喹诺酮类药物残留的生态效应及归宿

GAO Yuan-Gang,XIANG Yun-Bin,CHEN Jing-Yuan,YU Zhi-He,
高元钢
,向云彬,陈京元,余知和

微生物学报 , 2008,
Abstract: Fluoroquinolones are synthetic antimicrobial agents that are active against a broad spectrum of pathogenic Gram-negative and -positive bacteria by selectively inhibiting DNA gyrase and used in a wide variety in clinic because of their good pharmic kinetics and curing effects, thus causing environmental pollution. The physicochemical characteristics of fluoroquinolones and their environmental effect, identification, monitoring and bioremediation in soil were summarized in this paper.
The Summary of the Database of Fungal Genomes Publicly Available
真菌基因组数据库概况

ZHOU Jian-Fen,ZENG Zhao-Qing,GAO Yuan-Gang,YU Zhi-He,
周建芬
,曾昭清,高元钢,余知和

微生物学通报 , 2008,
Abstract: Genomics that indicates DNA sequence of genomes of different organisms and their genetics background is a core of discipline closely related with biology and medical research. The last decade has witnessed a revolution in the genomics of the fungal kingdom and fungi have become the best model organisms of the eukaryotes. By June of 2008, there were less than 80 fungal genomes that were completely or almost completely sequenced and publicly accessible representing the widest sampling of genomes from any eukaryotic kingdom. These genomes belonging to true fungi, Microsporidia and Oomyces vary in size from approximately 2.5 Mb to 81.5 Mb. This review here provides an overview of available fungal genomes.
Advances in studies of fungal genomics
真菌基因组学研究进展

YU Zhi-He,GAO Yuan-Gang,ZENG Zhao-Qing,SU Kun,XIAO Li-LUO,Ming-Feng,
余知和
,高元钢,曾昭清,苏坤,肖力,骆名凤

菌物学报 , 2008,
Abstract: 真菌为低等真核生物,种类庞大而多样.据估计,全世界约有真菌150万种,已被描述的约8万种(Kirk et al. 2001).真菌在自然界分布广泛,存在于土壤、水、空气和生物体内外,与人类生产和生活有着非常密切的关系.许多真菌在自然界的碳素和氮素循环中起主要作用,参与淀粉、纤维素、木质素等有机含碳化合物及蛋白质等含氮化合物的分解.
Dynamic Analysis and Diversity of Plant Life Cycle Forms
植物生活史型的多样性及动态分析

ZU Yuan-Gang,
祖元刚

生态学报 , 2002,
Abstract: This paper mainly discussed the basic definition and types of plant life cycle form. According to the plant ecological amplitude, fitness and energy allocation patterns, plant life cycle form could be classified as three basic forms (V form: vegetative growth form; S form: sexual reproduction form and C form: clone reproduction form) and six transitional forms (VS form, SV form, CS form and SC form, VC and CV form) which combine features of three basic forms. By trading off the energy allocation among different plant cycle phases, plants optimize their energy utilization and adopt a specific plant life cycle form with the characteristics of best reproductive and survival benefits as well as maximum fitness to habitats. Moreover, our results indicate that primary metabolism and secondary metabolism might be closely correlated with plant life cycle forms and their transformation between forms. Generally speaking, primary metabolite is mainly used in vegetative growth, but secondary metabolite may be mainly used to promote propagation and over come environmental stress. The plant life cycle form of one specific species could transform from one form to another to adapt to the changing environment. This transformation process is characterized as a dynamic process and form the spectrum of plant life cycle forms of this species. The developing mechanism of plant life cycle form is also discussed in this paper. The size of an environmental sieve (resource status and disturbance degree of habitat) results in the selective pressure. According to the pressure intensity, plants optimize their energy allocation with regard to the need of their different organs by way of producing primary and secondary metabolites, These result in the adaptive strategy and ecological amplitude of one specific species. Finally, fitness manifested by the interaction between the habitat and the adaptive strategy can be characterized as plant life cycle form. Furthermore, this paper also discusses the transformation mechanism between the plant life cycle forms. Because each species has its specific habitat type, selective pressure, metabolite and adaptive strategy, habitat also has a transformational change with the continuous change in spatial and temporal scales. These result in the formation of transformation types of habitat. These kinds of habitat enhances the transformational changes in selective pressure, metabolite and adaptive strategy, which form their transformation types, respectively. As a result, the inter\|transformation processes of plant life cycle forms (so\|called transformation types) were observed. The spectrums of plant life cycle forms of five species including Rhodiola sachalinensis were exemplified to analyze the dynamic features of these spectrums and their possible correlation to the community characteristics. Our results indicated that: First,plants mainly with a V life cycle form generally have a stable population because of their relative big vegetati
Classification and reciprocal transformation of plant life cycle forms
植物生活史型的划分及其相互转化

ZU Yuan-Gang,
祖元刚

生态学报 , 2005,
Abstract: The plant life cycle should include 3 cardinal processes of vegetative growth, sexual reproduction and clonal reproduction, expressing various adaptability features and life cycle characteristics in long-term evolution process. The life history strategies of the plant were the representations of long-term adaptation to relative stable surroundings. The superior life history strategy might be formed under the specific habitats. When the plant habitats expressed any variety (the abrupt change usually expresse...
The blooming and production of reproductive modules in relation to tree age and their position within crowns in Betula platyphylla
白桦的开花时间及生殖构件的数量与树龄和树冠层次的关系

ZU Yuan-Gang,
祖元刚

生态学报 , 2000,
Abstract: The time of first blooming and fruiting of birch varied greatly in different habitats and origins.On the same habitat,seed\|origin plant bloomed over 6 years later than that from sprouts.The first flowers in mesic site appeaired earlier than those in wet site.Blossom date within a year also varied among different stands.Catkin module number,reproductive branch number,and the number of catkins per reproductive branch were directly related to the age of tree.The number of catkin modules in middle\|aged trees>...
Application of Simulated Annealing Algorithm to the Optimization of the Fracturing, Injection and Production System
模拟退火算法在压注采系统优化中的应用

XU Yuan-gang,
胥元刚

系统工程理论与实践 , 2001,
Abstract: It is difficulty to optimize the fracturing, injection and production system (FIPS) by conventional optimal methods because it is a nonlinear and complicated system including three key sectors, hydraulic fracturing, water injection and oil production in the development of low permeability reservoirs. Methods for optimizing the FIPS using the simulated annealing algorithm (SA) are presented. SA is a global optimal method and independent on the selection of the initial points. Especially for the FIPS itself involving larger numerical calculations, SA demonstrates the priority of direct search. The results show that SA can solve the global optimization of nonlinear problems for the FIPS effectively. The optimum matching relationship among fracturing, injection and production is obtained. The technical and economical integration for hydraulic fracturing, water injection and oil production is achieved. A reliable theory is provided for improving the integral profits for the development of low permeability reservoirs.
BMI-based Output Feedback Control Design with Sector Pole Assignment
基于BMI方法的扇形极点配置输出反馈控制

WANG Yuan-Gang,
王远钢

自动化学报 , 2008,
Abstract: Regional pole assignment is studied for a class of linear systems via bounded static output-feedback.The solv- ability of the problem is formulated via an optimization prob- lem subject to a set of bilinear matrix inequalitis(BMIs).Then, based on perturbation linearization of the BMIs,an iterative lin- ear matrix inequality(LMI)algorithm is proposed to search for the satisfactory output feedback.The effectiveness of the pro- vided algorithm is finally illustrated by two numerical examples.
Effect of high temperature on life cycle forms and physiological metabolisms of Catharanthus roseus
高温对长春花生活史型形成和生理代谢的影响

TANG Zhong-Hu,JIAO Yan,ZHANG Xue-Ke,ZU Yuan-Gang,GAO Yang,SUN Yan-Fei,YANG Lei,ZHAO Xiao-Ju,
唐中华
,焦琰,张学科,祖元刚,高杨,孙艳斐,杨蕾,赵晓菊

生态学报 , 2006,
Abstract: 长春花(Catharanthus roseus)是重要的药用植物,广泛栽植于热带和亚热带地区。高温(≥40℃)是其生活史过程中常见的胁迫因子之一。为了研究高温对植物能量在营养和繁殖上分配格局和生理代谢的影响,运用生活史型理论与方法研究高温和对照温度条件下长春花生活史型和生理代谢动态特点。主成分分析法(Principal component analysis,PCA)对营养生长(Vegetativegrowth,V)、有性生殖(Sexual reproduction,S)和无性繁殖(Clone reproduction,C)等3类15种性状进行统计,发现4周后高温与对照温度条件下长春花生活史型划分结果分别为V0.480S0.487C0.032和V0.604S0.385C0.010。对高温处理过程中可溶性糖、生物碱和抗氧化剂的代谢规律研究发现,蔗糖含量在第4周增加了约7倍,达到了(1.41±0.23)mg/g;文朵灵、长春质碱和长春碱等3种生物碱在第2周增加了2倍,峰值分别达到(6.0±0.63)mg/g、(3.8±0.63)mg/g和(35.6±2.8)μg/g;还原性谷胱甘肽(glutathione,GSH)从(153.3±11.8)nmol/g升高到(348.7±19.9)nmol/g,氧化型谷胱甘肽(GSSG)由(54.5±9.27)nmol/g增加至(149.2±10.1)nmol/g,均增加了1倍以上,GSH/GSSG比值则呈持续下降趋势。结果表明,高温使长春花能量固定总量增加了1倍以上,促进了有性繁殖和无性繁殖的投入,降低了营养生长方面的投入比例,这种能量分配格局的变化伴随着显著的生理代谢变化。
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