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Using ORYZA2000 to model cold rice yield response to climate change in the Heilongjiang province, China

The Crop Journal 2015年第4期3卷 317-327页

作者： Jingting Zhang liping Feng Haiping Zou de li liu College of Resources and Environmental Sciences China Agricultural University NSW department of Primary Industries Wagga Wagga Agricultural Institute Graham Centre for Agricultural Innovation (an alliance between NSW department of Primary Industries and Charles Sturt University)

Rice(Oryza sativa L.) is one of the most important staple crops in China. Increasing atmospheric greenhouse gas concentrations and associated climate change may greatly affect rice production. We assessed the potential impacts of climate change on cold rice production in the Heilongjiang province, one of China's most important rice production regions. Data for a baseline period(1961–1990) and the period 2010–2050 in A2 and B2 scenarios were used as input to drive the rice model ORYZA2000 with and without accounting for the effects of increasing atmospheric CO2 concentration. The results indicate that mean,maximum, and minimum temperature during the rice growing season, in the future period considered, would increase by 1.8 °C under the A2 scenario and by 2.2 °C under the B2 scenario compared with those in the baseline. The rate of change in average maximum and minimum temperatures would increase by 0.6 °C per 10-year period under the A2 scenario and by 0.4 °C per 10-year period under the B2 scenario. Precipitation would increase slightly in the rice growing season over the next 40 years. The rice growing season would be shortened and the yield would increase in most areas in the Heilongjiang province. Without accounting for CO2 effect, the rice growing season in the period 2010–2050 would be shortened by 4.7 and 5.8 days,and rice yields would increase by 11.9% and 7.9%, under the A2 and B2 scenarios, *** with simulated rice yield increases greater than 30.0% were in the Xiaoxing'an Mountain region. The simulation indicated a decrease in yield of less than 15% in the southwestern Songnen Plain. The rate of change in simulated rice yield was 5.0% and 2.5% per 10 years under the A2 and B2 scenarios, respectively. When CO2 effect was accounted for, rice yield increased by 44.5% and 31.3% under the A2 and B2 scenarios, respectively. The areas of increasing yield were sharply expanded. The area of decreasing yield in the western region of Songnen Plains dis

关键词： Climate change Cold rice yield ORYZA2000 model Heilongjiang province China

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Expression,Purification,Characteristics and Homology Modeling of the HMGS from Streptococcus pneumoniae

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Biomedical and Environmental Sciences 2009年第3期22卷 229-236页

作者： YA-li BEN GU-ZHEN CUI CHEN li RUI HAN JIE ZHANG QING-YE ZHANG JIAN WAN de-li liu College of life Science Central China Normal University Wuhan 430079 Hubei China Key Laboratory of Pesticide & Chemical Biology (CCNU) of Ministry of Education Wuhan 430079 Hubei China Jianghan University Wuhan 430016 Hubei China

Objective To understand the molecular basis for a potential reaction mechanism and develop novel antibiotics with homology modeling for 3-hydroxy-3-methylglutaryl coenzyme A （HMG-CoA） synthase （HMGS）. Methods The genetic engineering technology and the composer module of SYBYL7.0 program were used, while the HMGS three-dimensional structure was analyzed by homology modeling. Results The mvaS gene was cloned from Streptococcus pneumoniae and overexpressed in Escherichia coli from a pET28 vector. The expressed enzyme （about 46 kDa） was purified by affinity chromatography with a specific activity of 3.24 μmol/min/mg. Optimal conditions were pH 9.75 and 10 mmol/L MgCl2 at 37 ℃ The Vmax and Km were 4.69 μmol/min/mg and 213 μmol/L respectively. The 3D model of *** HMGS was established based on structure template of HMGS of Enterococcus faecalis. Conelusion The structure of HMGS will facilitate the structure-based design of alternative drugs to cholesterol-lowering therapies or to novel antibiotics to the Gram-positive cocci, whereas the recombinant HMGS will prove useful for drug development against a different enzyme in the mevalonate pathway.

关键词： Streptococcus pneumoniae HMG-CoA synthase Analysis of dynamics Homology modeling

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Empirical Study on Chemotherapeutic Susceptibility of SP Cells in Human Pulmonary Adenocarcinoma Cell line A549 in Vitro

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Clinical oncology and cancer researeh 2010年第4期7卷 265-270页

作者： Tong XIE li li de-seng liu Nai-quan MAO Dan-rong li Chuan-tian ZUO Ding-ming HUANG department of Thoracic Surgery the Affiliated Cancer Hospital of Guangxi Medical University Nanning 530021 Guangxi Province China.

OBJECTIVE To explore the chemotherapeutic susceptibility of SP cells in human pulmonary adenocarcinoma cell line A549 and the possible mechanism of multidrug *** SP and non-SP （NSP） cells in the cell line A549 were isolated by fluorescence activated cell sorter. The susceptibility of SP and NSP cells to DDP, 5-FU, VP16, NVB and GEM was detected by a drug susceptibility test, and IC50s were calculated 24 h a er the chemotherapy; and then a er a 2-hour IC50 treatment with 5 chemotherapeutic drugs on the 2 subsets of NSP cells, the intracellular drug levels were determined and analyzed using high performance liquid *** There was no statistical signifi cance in comparison of the di. erences in IC50s and in intracellular drug levels a er DDP treatment between the 2 subsets （P 〉 0.05）, （P 〉 0.05）. However,all IC50s of the other 4 drugs were significantly higher in the SP cells than in the NSP cells （P 〈 0.01）. A er the chemotherapy, the intracellular drug levels of the other 4 drugs were significantly lower in SP cells than in NSP cells （P 〈 0.01）.CONCLUSION Compared to NSP cells, SP cells in the cell line A549 have stronger resistance to the chemotherapeutics. The multidrug resistance of SP cells closely correlates with the function of SP cells discharging chemotherapeutic agents.

关键词： neoplastic stem cells abcg2 protein human drug resistance multiple intracellular space drug tolerance

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Different effects of nine clausenamide ennatiomers on liver glutathione biosynthesis and glutathione S-transferase activity in mice

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Acta Pharmacologica Sinica 2006年第8期27卷 1024-1028页

作者： Yu-qun WU li-de liu Hua-ling WEI Geng-tao liu~1 department of Pharmacology,Institute of Materia Medica,Peking Union Medical College & Chinese Academy of Medical Sciences.Beijing 100050.China department of Pharmacology Institute of Materia Medica Peking Union Medical College & Chinese Academy of Medical Sciences Beijing China

Aim:To study the effects of nine synthetic clausenamide with different stereostructures on liver glutathione(GSH)biosynthesis and glutathione S-transferase(GST)activity in ***:The nine test compounds were racemic mixturesand their ennatiomers of clausenamide,neoclausenamide and *** were administered clausenamide 250 mg/kg once daily for 3 consecutivedays,ig,and were killed 24 h after the last *** mouse liver cytosol GSHand GST were determined with related biochemical ***:Nineclausenamides exhibited different effects on liver GSH and *** nineclausenamides,only(+)and(±)clausenamide markedly increased liver cytosolGSH *** mechanism of increasing liver GSH content of(+)clausenamideis mainly due to stimulating the key limiting enzyme γ-glutamylcysteine synthetase(γ-GCS)activity for GSH *** other test clausenamides had no sucheffect on liver *** of the nine clausenamides induced a significant increaseof GST ***:The effects of clausenamide ennatiomers on liverGST and GSH varied with the alterations of their spatial structures.(+)Clausena-mide stimulated liver GSH biosynthesis through enhancing γ-GCS activity.

关键词： clausenamide glutathione γ-glutamylcysteine synthetase glutathione S-transferase

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decreases of voltage-dependent K~+ currents densities in ventricular myocytes of guinea pigs by chronic oxidant stress

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Acta Pharmacologica Sinica 2004年第6期25卷 49-53页

作者： de-li DONG, Yan liu, Yu-hong ZHOU,Wei-hua SONG, He WANG, Bao-feng YANG2 department ofpharmacology, Harbin Medical University, Harbin 150086, China department of pharmacology Harbin Medical University Harbin 150086

AIM: To determine the changes of delayed rectifier K+ currents (Ik) and inward rectifier K+ currents (Ik1) in the ventricular myocytes of guinea pigs during the gradual apoptotic process by the chronic oxidant stress treatment. METHODS: H2O250 μmol/L (24 h) was used for inducing apoptosis in the cardiomyocytes culture of neonatal rats and to treat the isolated ventricular myocytes of adult guinea pigs in vitro for 24 h. Apoptosis was evaluated by TUNEL methods and voltage-dependent K+ currents were recorded by patch-clamp techniques. RESULTS: H2O2 50 μmol/L (24 h)induced cell apoptosis in the cardiomyocytes culture of neonatal rats. This concentration was used to treat the isolated ventricular myocytes of adult guinea pigs in vitro for 24 h and the voltage-dependent K+ currents densities (Ik, Ik1) were down-regulated. The densities of the delayed rectifier K+ currents (Ik) in 50 μmol/L H2O2 group were 2.52±0.57 pA/pF vs 5.73±1.84 pA/pF in the control group at +50 mV (n=8, Pdensities of the inward rectifier K+ currents (Ik1) in 50 μmol/L H2O2 group were -13.9± 2.70 pA/pF, 2.52±0.57 pA/pF vs -59.7±11.9 pA/pF, 5.73±1.84 pA/pF in the control group at -120 mV (n=8, Pdensities of Ik, Ik1 in the cardiomyocytes of guinea pigs were down- regulated and the inward rectifier property of Ik1 was weakened during the gradual apoptotic process after 50 μmol/L H2O2 treatment for 24 h.

关键词： hydrogen peroxide potassium apoptosis cardiac myocytes

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The Problem of Phase Transition In Drift-DLA

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Communications in Nonlinear Science and Numerical Simulation 1998年第1期 3-5页

作者： Fuxuan CHANG , Houqiang li , de liu and libin liN (department of Physics, Open laboratory of Radiation Physics and Technology, Sichuan University, Chengdu, 610064, China)

ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅＭｏｄｅｌｏｆＤｒｉｆｔＤＬＡＴｈｅｍｏｄｅｌｏｆＤＬＡｗａｓｐｒｏｐｏｓｅｄｂｙＷｉｔｅｎａｎｄＳａｎｄｅｒｉｎ１９８１［１，２］．Ｉｎｔｈｉｓｍｏｄｅｌ，ｔｈｅｐａｒｔｉｃｌｅｓ... 详细信息

ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅＭｏｄｅｌｏｆＤｒｉｆｔＤＬＡＴｈｅｍｏｄｅｌｏｆＤＬＡｗａｓｐｒｏｐｏｓｅｄｂｙＷｉｔｅｎａｎｄＳａｎｄｅｒｉｎ１９８１［１，２］．Ｉｎｔｈｉｓｍｏｄｅｌ，ｔｈｅｐａｒｔｉｃｌｅｓａｒｅａｓｕｍｅｄｔｏｆｏｌｏｗｒ...

关键词： DLA drift effect phase transition renormalization group

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Engineering atomic Rb-N configurations to tune radical pathways for highly selective photocatalytic H2O2 synthesis coupled with biomass valorization

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Journal of Energy Chemistry 2025年第1期100卷 215-225页

作者： Jiaye li Shuang Pan Yihuang Chen Qiong liu College of Chemistry and Materials Engineering Wenzhou University Guangdong Provincial Key Laboratory of Chemical Measurement and Emergency Test Technology (China) Institute of Analysis Guangdong Academy of Sciences (China National Analytical CenterGuangzhou)

Photocatalytic oxygen reduction for hydrogen peroxide （H2O2） synthesis presents a green and costeffective production ***,achieving highly selective H2O2synthesis remains challenging,necessitating precise control over free radical reaction pathways and minimizing undesirable oxidative ***,we report for the visible light-driven simultaneous co-photocatalytic reduction of O2to H2O2and oxidation of biomass using the atomic rubidium-nitride modified carbon nitride（CNRb）.The optimized CNRb catalyst demonstrates a record photoreduction rate of 8.01 mM h-1for H2O2generation and photooxidation rate of 3.75 mM h-1for furfuryl alcohol to furoic acid,achieving a remarkable solar-to-chemical conversion （SCC） efficiency of up to 2.27%.Experimental characterizations and DFT calculation disclosed that the introducing atomic Rb–N configurations allows for the high-selective generation of superoxide radicals while suppressing hydroxyl free radical *** is because the Rb–N serves as the new alternative site to perceive a stronger connection position for O2adsorption and reinforce the capability to extract protons,thereby triggering a high selective redox product *** study holds great potential in precisely regulating reactive radical processes at the atomic level,thereby paving the way for efficient synthesis of H2O2coupled with biomass valorization.

关键词： Atomic economy Radical pathway regulation Rubidium atom coordination Biomass valorization

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Micro-strain regulation strategy to stabilize perovskite lattice based on the categories and impact of strain on perovskite solar cells

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Journal of Energy Chemistry 2025年第1期100卷 578-604页

作者： Caixia li Wenwu liu Shiji Da lingbin Kong Fen Ran State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of Technology School of Materials Science and Engineering Lanzhou University of Technology

Photovoltaic metal halide perovskite solar cells(PSCs) convert light to electricity more efficiently than crystalline silicon cells, and the cost of materials used to make them is lower than that of silicon *** efficiency is not a core issue affecting the application of perovskite solar cells in special *** present, stability is the major technical encounters that hinders its further commercial development. Microstrain in PSCs is currently a significant factor responsible for the device's instability. Strain-induced ion migration is widely believed to accelerate perovskite degradation even when external stimuli are ***, it is imperative to study strain to enhance the stability of PSCs. This paper reviews recent developments to understand strain's origin and effect mechanisms on performance of PSCs, including ion migration,failure behavior, defect formation, and its effect on photoelectric properties, stability, and ***, several well-known strain management strategies are systematically introduced based on the strain effect mechanism and strain engineering on the film, providing more clues for further preparation with increased stability. The manipulation of external physical strain applied from films to entire devices has been extensively studied. Furthermore, recommendations for future research directions and chemical approaches have been provided. It is emphasized that strain engineering plays a crucial role in improving the efficiency and longevity of PSCs. Tensile strain causes rapid degradation, while moderate compressive strain and external strain control could improve properties and stability. Efforts should focus on controlling compressive strain to mitigate residual tensile strain and introducing it in a controlled manner. Future research endeavors may focus on exploring these pathways to improve the efficiency and lifespan of PSCs.

关键词： Halide perovskite solar cells Strain origins Strain effects Strain management

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一种基于因子图模型的半监督社区发现方法

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自动化学报 2016年第10期42卷 1520-1531页

作者：黄立威李彩萍张海粟刘玉超李德毅刘艳博北京市遥感信息研究所北京100854 中国人民解放军国防信息学院武汉430010 中国指挥与控制学会北京100048 中国电子系统工程研究所北京100039

社区发现是社交网络分析中一个重要的研究方向.当前大部分的研究都聚焦在自动社区发现问题,但是在具有数据缺失或噪声的网络中,自动社区发现算法的性能会随着噪声数据的增加而迅速下降.通过在社区发现中融合先验信息,进行半监督的社区发... 详细信息

社区发现是社交网络分析中一个重要的研究方向.当前大部分的研究都聚焦在自动社区发现问题,但是在具有数据缺失或噪声的网络中,自动社区发现算法的性能会随着噪声数据的增加而迅速下降.通过在社区发现中融合先验信息,进行半监督的社区发现,有望为解决上述挑战提供一条可行的途径.本文基于因子图模型,通过融入先验信息到一个统一的概率框架中,提出了一种基于因子图模型的半监督社区发现方法,研究具有用户引导情况下的社交网络社区发现问题.在三个真实的社交网络数据(Zachary社会关系网、海豚社会网和DBLP协作网)上进行实验,证明通过融入先验信息可以有效地提高社区发现的精度,且将我们的方法与一种最新的半监督社区发现方法 (半监督Spin-Glass模型)进行对比,在三个数据集中F-measure平均提升了6.34%、16.36%和12.13%.

关键词：社交网络半监督社区发现因子图社交网络分析概率推理

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Enhanced post-combustion CO2 capture and direct air capture by plasma surface functionalization of graphene adsorbent

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Journal of Energy Chemistry 2025年第1期100卷 653-664页

作者： Rahul Navik Eryu Wang Xiao Ding Huang Yunyi Yiyu liu Jia li Guangdong-Hong Kong Joint Laboratory for Carbon Neutrality Jiangmen Laboratory of Carbon and Science and Technology Guangzhou HKUST Fok Ying Tung Research Institute The Hong Kong University of Science and Technology (Guangzhou) Carbon Neutrality and Climate Change Thrust Society Hub The Hong Kong University of Science and Technology (Guangzhou) Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University

Graphene has enormous potential to capture CO2due to its unique properties and ***,graphene-based adsorbents have drawbacks of lower CO2adsorption capacity and poor *** work demonstrates a one-step rapid and sustainable N2/H2plasma treatment process to prepare graphene-based sorbent material with enhanced CO2adsorption *** treatment directly enriches amine species,increases surface area,and improves textural *** CO2adsorption capacity increases from 1.6 to 3.3 mmol/g for capturing flue gas,and from 0.14 to 1.3 mmol/g for direct air capture （DAC）.Importantly,the electrothermal property of the plasma-modified aerogels has been significantly improved,resulting in faster heating rates and significantly reducing energy consumption compared to conventional external heating for regeneration of *** aerogels display improved selectivity of 42 and 87 after plasma modification for 5 and 10 min,*** plasma-treated aerogels display minimal loss between 17%and 19% in capacity after 40 adsorption/desorption cycles,rendering excellent *** N2/H2plasma treatment of adsorbent materials would lower energy expenses and prevent negative effects on the global economy caused by climate change.

关键词： Carbon neutrality CO 2 capture Climate change Plasma treatment Graphene aerogel

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