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| 1 | Much Improved Irrigation Use Efficiency in an Intensive Wheat-Maize Double Cropping System in the North China Plain显示文摘在小麦玉米两熟制的庄稼产量和水使用效率(WUE ) 被短、不平的降雨在北方中国平原(NCP ) 影响。一个 2 年的实验被进行在在收割系统改进灌溉使用效率的土壤水分均衡,庄稼收益和 WUE 上调查灌溉的效果。由庄稼的土壤水弄空(SWS ) 通常随灌溉和降雨的增加减少了,当为整个旋转的 SWS 在这些灌溉处理之中是相对稳定的时。在小麦季节的高灌溉特别在干旱季节为随后的玉米增加了起始的土壤潮湿和 SWS。主要灌溉和降雨在以前的庄稼季节影响的起始的土壤水,对在如此的收割系统的高产必要。当 et 为小麦到达了大约 300 公里时,当玉米为整个旋转与类似的季节的 et 显示出各种各样的 WUE 时,谷物产量在土壤水分蒸发蒸腾损失总量(et ) 以前减少了,当 et 超过了大约 650 公里时, WUE 衰退了。这些结果为在在 NCP 收割系统的如此的小麦玉米改进灌溉使用效率显示大潜力。基于现在的结果,合理灌溉时间表为如此的一个收割系统根据不同年度降雨条件被介绍。 | Quanxiao Fang Yuhai Chen Qiang Yu Zhu Ouyang Quanqi Li Shunzhang Yu | 2007 | Journal of Integrative Plant Biology2007，49，10： | 11 |
| 2 | Blue-green algal toxions and livercancer显示文摘 | YU Shunzhang CHEN Gang | 1994 | Chinese Journal of Cancer Reseach1994，6，1： | 1 |
| 3 | The biochemical behavior and mechanism of uranium(Ⅵ)bioreduction induced by natural Bacillus thuringiensis显示文摘For a broader understanding of uranium migration affected by microorganisms in natural anaerobic environment,the bioreduction of uranium(Ⅵ)(U(Ⅵ))was revealed in Bacillus thuringiensis,a dominant bacterium strain with potential of uranium-tolerant isolated from uranium contaminated soil.The reduction behavior was systematically investigated by the quantitative analysis of U(Ⅳ)in bacteria,and mechanism was inferred from the pathway of electron transmission.Under anaerobic conditions,appropriate biomass and sodium lactate as electron donor,reduction behavior of U(Ⅵ)induced by B.thuringiensis was restricted by the activity of lactate dehydrogenase,which was directly affected by the initial pH,temperature and initial U(Ⅵ)concentration of bioreduction system.Bioreduction of U(Ⅵ)was driven by the generation of nicotinamide adenine dinucleotide(NADH)from enzymatic reaction of sodium lactate with various dehydrogenase.The transmission of the electrons from bacteria to U(Ⅵ)was mainly supported by the intracellular NADH dehydrogenase-ubiquinone system,this process could maintain the biological activity of cells. | Shunzhang Chen Junyuan Gong Yanxia Cheng Yuqi Guo Feize Li Tu Lan Yuanyou Yang Jijun Yang Ning Liu Jiali Liao | 2024 | Journal of Environmental Sciences2024，，2： | 0 |
| 4 | Unusual uranium biomineralization induced by green algae: Behavior investigation and mechanism probe显示文摘As a biosorbent,algae are frequently used for the biotreatment or bioremediation of water contaminated by heavymetal or radionuclides.However,it is unclear that whether or not the biomineralization of these metal or radionuclides can be induced by algae in the process of bioremediation and what the mechanism is.In this work,Ankistrodsemus sp.has been used to treat the uranium-contaminated water,and more than 98%of uranium in the solution can be removed by the alga,when the initial uranium concentration ranges from 10 to 80 mg/L.Especially,an unusual phenomenon of algae-induced uranium biomineralization has been found in the process of uranium bioremediation and its mineralization mechanism has been explored bymultiple approaches.It is worth noticing that the biomineralization of uranium induced by Ankistrodsemus sp.is significantly affected by contact time and pH.Uranium is captured rapidly on the cell surface via complexation with the carboxylate radical,amino and amide groups of themicroalgae cells,which provides nucleation sites for the precipitation of insolubleminerals.Uranium stimulates Ankistrodsemus sp.to metabolize potassium ions(K+),which may endow algae with the ability to biomineralize uranium into the rose-like compreignacite(K_(2)[(UO_(2))6O_(4)(OH)_(6)]•8H_(2)O).As the time increased,the amorphous gradually converted into compreignacite crystals and a large number of crystals would expand over both inside and outside the cells.To the best of our knowledge,this is the first investigated microalgae with a time-dependent uranium biomineralization ability and superior tolerance to uranium.This work validates that Ankistrodsemus sp.is a promising alga for the treatment of uranium-contaminated wastewater. | Yanxia Cheng Ting Zhang Shunzhang Chen Feize Li Renwei Qing Tu Lan Yuanyou Yang Jiali Liao Ning Liu | 2023 | Journal of Environmental Sciences2023，，2： | 0 |
| 5 | Using RAPD in Neisseria gonorrhoeae genotyping and transmission detection显示文摘The aim of this paper is to develop an applic-able Random Amplified Polymorphic DNAs(RAPD)method for genotyping Neisseria gonorrhoeae strain,and discuss the possibility of using the RAPD method to trace N.gonorrhoeae strain transmission route.Four different pretreatment methods were used on the N.gonorrhoeae genomic DNA component,and the best adaptive extract method was selected for RAPD.Different RAPD primers sequence was used for amplification and their differenti-ating capabilities for N.gonorrhoeae strains were com-pared.Applicable RAPD primer was selected for N.gonorrhoeae genotyping and then applied into transmis-sion detection.The results show that the so called cetyl-trimethylammonium bromide(CTAB)method for extracting genomic DNA could give integrated genomic DNA and give out relatively better RAPD fingerprint maps,subsequently,using selected RAPD primer could give out a group of amplification polymerase chain reac-tion bands.The fingerprint maps from different N.gonor-rhoeae strains were distinctive.Some main segments were common to all the N.gonorrhoeae strains tested.Some segments were different among the N.gonorrhoeae strains.According to the fingerprint maps and similarity index of different N.gonorrhoeae isolates,isolates from a pair of sex-partners were very similar.Based on these findings,the best extracting method and suitable RAPD primer were chosen.The RAPD fingerprint maps could type N.gonorrhoeae effectively and could be used as an additional approach in molecular epidemiology for tracing infection sources. | Tiejun ZHANG Xiaoming ZHOU Tao ZHANG Yue CHEN Shunzhang YU Qingwu JIANG | 2008 | Frontiers of Medicine2008，2，3： | 0 |
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