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Study on Laccase-catalyzed Oxidation of Disubstituted Ferrocene and π-arene-π- cyclopentadienyliron Derivatives

wuhan university Journal of Natural {2.s 2000年第3期5卷 351-356页

作者： Ji Li-cai1, Hu Pei-zhi2. Jin chang-hua3 , Ding Zi-rong2.1. college of Adult Education,{2., wuhan 430072. china 2. col lege of chemistry and environment science,{2., wuhan 430072. c hina 3,Yiping Plant of chemistry and Industry at Zhong Qing city, Zhong Qing 63132., china wuhan university College of Adult Education Wuhan China (GRID:grid.49470.3e) (ISNI:***) wuhan university College of Chemistry and Environment Science Wuhan China (GRID:grid.49470.3e) (ISNI:***) Yiping Plant of chemistry and Industry at Zhong Qing city Zhong Qing China (GRID:grid.49470.3e)

It is studied that Rhus vernicifera laccase catalyzed oxidation of 2. disubstituted ferrocene and its metal complexes, π-arene-π-cyclopentadienyliron derivatives and metal meso-(tetra-4-sulfanatophenyl)porphyrin in the diethylene glycol monobutyl ether (DGBE)/phosphate buffer (V/V, 1/5). It is found that 1,1′-bishydroxylmethyl ferrocene etc 16 compounds are new substrates of laccase. The relation of structure and function of substrates is discussed. The affective factors of laccase-catalyzed oxidation of 1,1′-bishydroxyl-methyl ferrocene—pH, temperature, substrate concentration, laccase quantity and surfactant were investigated further.

关键词： Key words Rhus vernicifera laccase disubstituted ferrocene catalytic oxidation π arene π cyclopentadienyliron

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基于Linux的SMP机群环境中并行I/O模型研究

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计算机工程与应用 2004年第26期40卷 79-81页

作者：曾碧卿陈志刚吕西红刘安丰中南大学信息科学与工程学院长沙410083

提出了一个基于数据通路的波浪推进式并行I/O模型框架,并在基于Linux的SMP机群系统中,根据波浪推进式并行I/O模型框架对各个数据通路进行建模,具体分析了这个波浪推进式并行I/O模型,从思路上解决了刻画并行I/O性能的并行I/O模型问题。

关键词： SMP机群并行I/O模型

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Functional-trait ecology of the plateau pika Ochotona curzoniae in the Qinghai-Tibetan Plateau ecosystem

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Integrative Zoology 2019年第1期14卷 87-103页

作者： Andrew T.SMITH BADINGQIUYING Maxwell c.WILSON Brigitte W.HOGAN School of Life sciences Arizona State UniversityTempeArizonaUSA School of Geographical sciences Qinghai Normal UniversityXiningChina

Understanding a species’functional traits allows for a directed and productive perspective on the role a species plays in nature,and thus its relative importance to conservation *** functionaltrait ecology of the plateau pika Ochotona curzoniae is examined to better understand the resilience and sustainability of the high alpine grasslands of the Qinghai-Tibetan Plateau(QTP).The key functional traits of plateau pikas are their abundance and behavior of digging extensive burrow *** pikas have been poisoned over a significant part of their original geographic distribution across the QTP,allowing comparison of ecological communities with and without *** all mammalian and avian carnivores,most of which are obligate predators on pikas,have been lost in regions where pikas have been *** endemic birds on the QTP nest in pika burrows;when pikas are poisoned,burrows collapse,and these birds are greatly reduced in *** to the biopedturbation resulting from their burrows,regional plant species richness is higher in areas with pikas than *** presence of pika burrows allows higher rates of infiltration during heavy monsoon rains compared to poisoned areas,possibly mitigating runoff and the potential for serious downslope erosion and ***,the functional traits of plateau pikas enhance native biodiversity and other important ecosystem functions;these traits are *** plateau pikas are not natural colonizers,active reintroduction programs are needed to restore pikas to areas from which they have been poisoned to restore the important functional ecological traits of pikas.

关键词： ecosystem engineer functional-trait ecology keystone species Ochotona curzoniae re-introduction

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