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| 1 | The effect of PET calculations in DRAINMOD on drainage and crop yields predictions in a subhumid vertisol soil district显示文摘The field hydrology model-DRAINMOD has several options for evapotranspiration (ET) calculation. The choice of each calculation method may affect modeling results because ET is one of the most important hydrologic components in field hydrology. ET calculation method may also have significant impact on crop yield predictions. As variable ET estimation methods are available nowadays, this paper presents a study of different ET inputs on simulated crop yields and drainage volume based on weather and soil data from a subhumid climate zone in China. The study results show that the effect of ET estimate on drainage and crop yield prediction is affected by crop species and growing period; more accurate ET estimate is also critical in simulating the effect of controlled drainage on field hydrology and crop production. The results of this study indicate that the effort contributed to better ET estimate is very important in model applications. | LUO Wan JING WeiHua JIA ZhongHua LI Jin PAN YanXin | 2009 | Science China(Technological Sciences)2009，52，11： | 6 |
| 2 | Direct detection of a single[4Fe-4S]cluster in a tungsten-containing enzyme:Electrochemical conversion of CO_(2) into formate by formate dehydrogenase显示文摘The conversion of CO_(2) into fuels and valuable chemicals is one of the central topics to combat climate change and meet the growing demand for renewable energy.Herein,we show that the formate dehydrogenase from Clostridium ljungdahlii(ClFDH)adsorbed on electrodes displays clear characteristic voltammetric signals that can be assigned to the reduction and oxidation potential of the[4Fe-4S]^(2+/+)cluster under nonturnover conditions.Upon adding substrates,the signals transform into a specific redox center that engages in catalytic electron transport.ClFDH catalyzes rapid and efficient reversible interconversion between CO_(2) and formate in the presence of substrates.The turnover frequency of electrochemical CO_(2) reduction is determined as 1210 s^(-1) at 25℃ and pH 7.0,which can be further enhanced up to 1786 s^(-1) at 50℃.The Faradaic efficiency at−0.6 V(vs.standard hydrogen electrode)is recorded as 99.3%in a 2-h reaction.Inhibition experiments and theoretical modeling disclose interesting pathways for CO_(2) entry,formate exit,and OCN−competition,suggesting an oxidation-state-dependent binding mechanism of catalysis.Our results provide a different perspective for understanding the catalytic mechanism of FDH and original insights into the design of synthetic catalysts. | Wenjin Li Yanxin Gao Xuan Sun Lei Wan Haishuo Ji Hang Luo Yao Tian Hao Song Geng Wu Liyun Zhang | 2023 | Carbon Energy2023，5，5： | 2 |
| 3 | Hydrogenase as the basis for green hydrogen production and utilization显示文摘Hydrogenase is a paradigm of highly efficient biocatalyst for H_(2) production and utilization evolved in nature. A dilemma is that despite the high activity and efficiency expected for hydrogenases as promising catalysts for the hydrogen economy, the poor oxygen tolerance and low yield of hydrogenases largely hinder their practical application. In these years, the enigmas surrounding hydrogenases regarding their structures, oxygen tolerance, mechanisms for catalysis, redox intermediates, and proton-coupled electron transfer schemes have been gradually elucidated;the schemes, which can well couple hydrogenases with other highly efficient(in)organic and biological catalysts to build novel reactors and drive valuable reactions, make it possible for hydrogenases to find their niches. To see how scientists put efforts to tackle this issue and design novel reactors in the fields where hydrogenases play crucial roles, in this review,recent advances were summarized, including different strategies for protecting enzyme molecules from oxygen, enzyme-based assembling systems for H_(2) evolution in the photoelectronic catalysis, enzymatic biofuel cells for H_(2) utilization and storage and the efficient electricity-hydrogen-carbohydrate cycle for high-purity hydrogen and biofuel automobiles. Limitations and future perspectives of hydrogenasebased applications in H_(2) production and utilization with great impact are discussed. In addition, this review also provides a new perspective on the use of biohydrogen in healthcare beyond energy. | Haishuo Ji Lei Wan Yanxin Gao Ping Du Wenjin Li Hang Luo Jiarui Ning Yingying Zhao Huangwei Wang Lixin Zhang Liyun Zhang | 2023 | Journal of Energy Chemistry2023，，10： | 0 |
| 4 | Geochemistry of Thermal-Mineral Waters in Siping'an District, Shanxi Province, China显示文摘GeochemistryofThermal-MineralWatersinSiping'anDistrict,ShanxiProvince,China￥WanYanxin;SunLianfa(DepartmentofHydrogeologyandEn... | Wan Yanxin Sun Lianfa (Department of Hydrogeology and Engineering Geology, China University of Geosciences, Wuhan 430074)Sun Xiushan(Whter Resource Management Committee of Yangquan City, Shanxi Province, Yangquan 045000)Li Chunyan(Whter Resource Managem | 1994 | Journal of Earth Science1994，13，1： | 0 |
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