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| 1 | Integrated study of the water–ecosystem–economy in the Heihe River Basin显示文摘The ecological water diversion project in the Heihe River Basin is the irst successful case in China in which the ecological systems in a river basin have been rescued. his project serves as a valuable example for the management of ecosystems in other inland river basins. his paper reviews the integrated studies of the water–ecosystem–economy relationship in the Heihe River Basin and concludes that sustainable development in inland river basins requires the basin to be considered as a whole, with the relationships between the upstream, midstream and downstream areas of the basin coordinated appropriately. Successful development in these basins will be relected in an improved output per cubic meter of water and the implementation of integrated river basin management practices. | Guodong Cheng Xin Li Wenzhi Zhao Zhongmin Xu Qi Feng Shengchun Xiao Honglang Xiao | 2014 | National Science Review2014，1，3： | 55 |
| 2 | Numerical Simulation on Climate Effects of Freezing-Thawing Processes Using CCM3显示文摘A parameterization of soil freezing-thawing physics for use in the land-surface model of the National Center for Atmospheric Research(NCAR) Community Climate Model(CCM3) is developed and evaluated.The new parameterization scheme has improved the representation of physical processes in the existing land surface model.Numerical simulations using CCM3 with improved land-surface processes and with the original land-surface processes are compared against the NCEP reanalysis.It is found that the CCM3 version using the improved land surface model shows significant improvements in simulating precipitation in China during the summer season,the general circulation over East Asia,and wind fields over the Tibet Plateau.For the summer season,the improved model was able to better simulate the Indian summer monsoon components,including the mean northerly wind in the upper troposphere and mean southerly wind in the lower troposphere. | Chenghai Wang1,2*,Guodong Cheng3,Aijun Deng4,Wenjie Dong5 1.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research In-stitute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 2.State Key Laboratory of Cryosphere Sciences,Cold and Arid Regions Environmental and Engineering Research Insti-tute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 3.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research In-stitute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 4.Department of Meteorology,The Pennsylvania State University,University Park,PA 16802 5.State Key Laboratory of Earth Surface Processes and Ecology Resource,Beijing Normal University,Beijing 100875,China Chenghai Wang1,2*,Guodong Cheng3,Aijun Deng4,Wenjie Dong5 1.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research In-stitute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 2.State Key Laboratory of Cryosphere Sciences,Cold and Arid Regions Environmental and Engineering Research Insti-tute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 3.State Key Laboratory of Frozen Soil Engineering,Cold and Arid Regions Environmental and Engineering Research In-stitute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China 4.Department of Meteorology,The Pennsylvania State University,University Park,PA 16802 5.State Key Laboratory of Earth Surface Processes and Ecology Resource,Beijing Normal University,Beijing 100875,China | 2008 | Research in Cold and Arid Regions2008，，1： | 44 |
| 3 | Progress in additive manufacturing on new materials: A review显示文摘Recent efforts and advances in additive manufacturing(AM) on different types of new materials are presented and reviewed. Special attention is paid to the material design of cladding layers, the choice of feedstock materials, the metallurgical behavior and synthesis principle during the AM process, and the resulted microstructures and properties, as well as the relationship between these factors. Thereafter,the trend of development in the future is forecasted, including: Effects of the particles size and size distribution of powders; Approaches for producing fine microstructures; Opportunities for creating new materials by AM; Wide applications in reconditioning of damaged components; Challenges for deep understanding and applications of the AMed new materials. The idea of 'Develop Materials' or 'Create Materials' by AM is highlighted, but a series of scientific, technological and engineering problems remain to be solved in future. | Neng Li Shuai Huang Guodong Zhang Renyao Qin Wei Liu Huaping Xiong Gongqi Shi Jon Blackburn | 2019 | Journal of Materials Science & Technology2019，35，2： | 47 |
| 4 | Prediction of permafrost distribution on the Qinghai-Tibet Plateau in the next 50 and 100 years显示文摘Intergovernmental Panel on Climate Change (IPCC) in 2001 reported that the Earth air temperature would rise by 1.4-5.8℃ and 2.5℃ on average by the year 2100. China re-gional climate model results also showed that the air temperature on the Qinghai-Tibet Plateau (QTP) would increase by 2.2-2.6℃ in the next 50 years. A numerical permafrost model was developed to predict the changes of permafrost distribution on the QTP over the next 50 and 100 years under the two climatic warming scenarios, i.e. 0.02℃/a, the lower value of IPCC’s estima-tion, and 0.052℃/a, the higher value predicted by Qin et al. Simulation results show that ( i ) in the case of 0.02℃/a air-temperature rise, permafrost area on the QTP will shrink about 8.8% in the next 50 years, and high temperature permafrost with mean annual ground temperature (MAGT) higher than ?0.11℃ may turn into seasonal frozen soils. In the next 100 years, perma-frost with MAGT higher than ?0.5℃ will disappear and the permafrost area will shrink up to 13.4%. (ii) In the case of 0.052℃/a air-temperature rise, permafrost area on the QTP will reduce about 13.5% after 50 years. More remarkable degradation will take place after 100 years, and permafrost area will reduce about 46%. Permafrost with MAGT higher than ?2℃ will turn into seasonal frozen soils and even unfrozen soils. | NAN Zhuotong LI Shuxun CHENG Guodong | 2005 | Science China Earth Sciences2005，48，6： | 40 |
| 5 | Isotopic evidence for the moisture origin and composition of surface runoff in the headwaters of the Heihe River basin显示文摘We investigated the moisture origin and contribution of different water sources to surface runoff entering the headwaters of the Heihe River basin on the basis of NECP/NCAR(National Centers for Environmental Prediction/National Center for Atmospheric Research) re-analysis data and variations in the stable hydrogen and oxygen isotope ratios(δ D and δ 18O) of precipitation,spring,river,and melt water. The similar seasonality in precipitation δ 18O at different sites reveals the same moisture origin for water entering the headwaters of the Heihe River basin. The similarity in the seasonality of δ 18O and d-excess for precipitation at Yeniugou and Urumchi,which showed more positive δ 18O and lower d-excess values in summer and more negative δ 18O and higher d-excess values in winter,indicates a dominant effect of westerly air masses in summer and the integrated influence of westerly and polar air masses in winter. Higher d-excess values throughout the year for Yeniugou suggest that in arid inland areas of northwestern China,water is intensively recycled. Temporal changes in δ 18O,δ D,and d-excess reveal distinct contributions of different bodies of water to surface runoff. For example,there were similar trends for δ D,δ 18O,and d-excess of precipitation and river water from June to September,similar δ 18O trends for river and spring water from December to February,and similar trends for precipitation and runoff volumes. However,there were significant differences in δ 18O between melt water and river water in September. Our results show that the recharge of surface runoff by precipitation occurred mainly from June to mid-September,whereas the supply of surface runoff in winter was from base flow(as spring water) ,mostly with a lower runoff amount. | ZHAO LiangJu YIN Li XIAO HongLang CHENG GuoDong ZHOU MaoXian YANG YongGang LI CaiZhi ZHOU Jian | 2011 | Chinese Science Bulletin2011，56，4： | 35 |
| 6 | A scientometric review of biochar research in the past 20 years(1998-2018)显示文摘Biochar is the carbon-rich product obtained from the thermochemical conversion of biomass under oxygen-limited conditions.Biochar has attained extensive attention due to its agronomical and environmental benefits in agro-ecosystems.This work adopts the scientometric analysis method to assess the development trends of biochar research based on the literature data retrieved from the Web of Science over the period of 1998-2018.By analysing the basic characteristics of 6934 publications,we found that the number of publications grew rapidly since 2010.Based on a keyword analysis,it is concluded that scholars have had a fundamental recognition of biochar and preliminarily found that biochar application had agronomic and environmental benefits during the period of 1998-2010.The clustering results of keywords in documents published during 2011-2015 showed that the main research hotspots were“biochar production”,“biochar and global climate change”,“soil quality and plant growth”,“organic pollutants removal”,and“heavy metals immobilization”.While in 2016-2018,beside these five main research hotspots,“biochar and composting”topic had also received greater attention,indicating that biochar utilization in organic solid waste composting is the current research hotspot.Moreover,updated reactors(e.g.,microwave reactor,fixed-bed reactor,screw-feeding reactor,bubbling fluidized bed reactor,etc.)or technologies(e.g.,solar pyrolysis,Thermo-Catalytic Reforming process,liquefaction technology,etc.)applied for efficient energy production and modified biochar for environmental remediation have been extensively studied recently.The findings may help the new researchers to seize the research frontier in the biochar field. | Ping Wu Syed Tahir Ata-Ul-Karim Bhupinder Pal Singh Hailong Wang Tongliang Wu Cun Liu Guodong Fang Dongmei Zhou Yujun Wang Wenfu Chen | 2019 | Biochar2019，1，1： | 36 |
| 7 | Thawing and freezing processes of active layer in Wudaoliang region of Tibetan Plateau显示文摘The interaction between permafrost and atmosphere is accomplished through transfer of heat and moisture in the overlay active layer. Thus, the research on the thermal and hydrodynamics of active layer during the thawing and freezing processes was considered a key to revealing the heat and moisture exchanges between permafrost and atmosphere. The monitoring and research on active layer were conducted because permafrost occupies about two thirds of the total area of the Tibetan Plateau. Based on the analysis of the ground temperature data and soil moisture data of monitoring near the Wudaoliang region of the Tibetan Plateau, the thawing and freezing processes of active layer were divided into four stages, i.e. summer thawing stage (ST), autumn freezing stage (AF), winter cooling stage (WC) and spring warming stage (SW). Coupled heat and water flow is much more complicated in ST and AF, and more amount of water is migrating in these two stages. Heat is transferred mainly via conductive heat flow in the | Lin Zhao Guodong Cheng Shuxun Li Xinmin Zhao Shaoling Wang | 2000 | Chinese Science Bulletin2000，45，23： | 31 |
| 8 | ABF2, ABF3, and ABF4 Promote ABA-Mediated Chlorophyll Degradation and Leaf Senescence by Transcriptional Activation of Chlorophyll Catabolic Genes and Senescence-Associated Genes in Arabidopsis显示文摘叶绿素(Chl ) 降级是叶老朽的一个不可分的过程,并且 NYE1/SGR1 在多样的工厂种类作为 Chl 分解代谢的一个关键管理者被表明了。在这研究,用屏蔽的酵母一个混血儿,我们识别了三 abscisic 酸(骆驼毛的织物) 应答的元素(ABRE ) 绑定抄写因素, ABF2 (AREB1 ) , ABF3,和 ABF4 (AREB2 ) , NYE1 倡导者的通常认为的有约束力的蛋白质。通过 transactivation 分析, electrophoretic 活动性移动试金,和染色质 immunoprecipitation,我们表明了直接跳到并且在 vitro 并且在 vivo 激活 NYE1 倡导者的那 ABF2, ABF3,和 ABF4。骆驼毛的织物是叶老朽的一个积极管理者,并且外长地适用骆驼毛的织物能加速 Chl 降级。ABF, abf2abf3abf4,以及二骆驼毛的织物感觉迟钝的异种, abi1-1 和 snrk2.2/2.3/2.6 的三倍的异种,在骆驼毛的织物处理以后的展出停留绿色显型,与 NYE1 和 NYE2 表示的减少的正式就职一起。相反, ABF4 的 overexpression 在骆驼毛的织物处理之上加速了 Chl 降级。有趣地, ABF2/3/4 能也激活二 Chl 分解代谢的酶基因, PAO 和 NYC1 的表达式,由对他们的倡导者直接有约束力。另外, abf2abf3abf4 展出了功能的停留绿色显型,和联系老朽的基因(下垂) 例如 SAG29 (SWEET15 ) ,可能被 ABF 直接调整。一起拿,我们的结果在调停作为关键管理者建议那 ABF2, ABF3,和 ABF4 可能的行为被触发骆驼毛的织物的 Chl 降级和叶老朽一般来说在 Arabidopsis。 | Shan Gao Jiong Gao Xiaoyu Zhu Yi Song Zhongpeng Li Guodong Ren Xin Zhou Benke Kuai | 2016 | Molecular Plant2016，9，9： | 27 |
| 9 | Influences of local factors on permafrost occurrence and their implications for Qinghai-Xizang Railway design显示文摘The construction of the Qinghai-Xizang Railway is facing some challenges posed by the presence of warm and ice-rich permafrost and predicted climate warming. To resolve these issues and ensure the railway a success, adjustments will have to be made in design strategies and principles. This paper presents several examples of permafrost-distribution anomaly caused by site-specific conditions. It analyzes the mechanism through which these local factors influence the occurrence and preservation of permafrost by modifying the heat convection and conduction patterns, and the amount of solar radiation received by the ground surface. A good understanding of these anomalies in permafrost occurrence is significant as it may provide some hints on the techniques and measures we can use to artificially simulate similar effects. A number of measures can be taken to lower ground temperature and to counter the effect of cli-mate warming. These measures include use of proper roadbed material and configuration, in order to adjust solar radiation, heat convection and conduction patterns. It is recommended that a new proactive approach be adopted in the railway design. This approach emphasizes the use of all the above-mentioned measures to cool down the roadbed. This is different from previous methods of preventing permafrost from thawing by utilizing more thermal resistant materials. | CHENG Guodong | 2004 | Science China Earth Sciences2004，47，8： | 26 |
| 10 | ZIKA virus isolated from mosquitoes:a field and laboratory investigation in China,2016显示文摘A field investigation of arboviruses was conducted in Dejiang, Guizhou Province in the summer of 2016. A total of 8,795 mosquitoes, belonging to four species of three genera, and 1,300 midges were collected. The mosquito samples were identified on site according to their morphology, and the pooled samples were ground and centrifuged in the laboratory. The supernatant was incubated with mosquito tissue culture cells(C6/36) and mammalian cells(BHK-21) for virus isolation. The results indicated that 40%(3,540/8,795) were Anopheles sinensis, 30%(2,700/8,795) were Culex pipiens quinquefasciatus, and 29%(2,530/8,795)were Armigeres subbalbeatus. Furthermore, a total of eight virus isolates were obtained, and genome sequencing revealed two Zika viruses(ZIKVs) isolated from Culex pipiens quinquefasciatus and Armigeres subbalbeatus, respectively; three Japanese encephalitis viruses(JEVs) isolated from Culex pipiens quinquefasciatus; two Banna viruses(BAVs) isolated from Culex pipiens quinquefasciatus and Anopheles sinensis, respectively; and one densovirus(DNV) isolated from Culex pipiens quinquefasciatus.The ZIKVs isolated from the Culex pipiens quinquefasciatus and Armigeres subbalbeatus mosquitoes represent the first ZIKV isolates in China's Mainland. This discovery presents new challenges for the prevention and control of ZIKV in China, and prompts international cooperation on this global issue. | Shihong Fu Song Song Hong Liu Yuanyuan Li Xiaolong Li Xiaoyan Gao Ziqian Xu Guoping Liu Dingming Wang Zhenzao Tian Jingzhu Zhou Ying He Wenwen Lei Huanyu Wang Bin Wang Xiaoqing Lu Guodong Liang | 2017 | Science China(Life Sciences)2017，60，12： | 25 |
| 11 | Malate transported from chloroplast to mitochondrion triggers production of ROS and PCD in Arabidopsis thaliana显示文摘规划房间死亡(PCD ) 是一个基本生物过程。在马赛克死亡 1 的缺乏(MOD1 ) ,质体局部性的 enoyl-ACP reductase,导致反应的氧种类(ROS ) 和 PCD 的累积,它能被 mitochondrial 建筑群压制我变化,从叶绿体显示一个信号到线粒体。然而,这个信号尚待被阐明。在这研究,通过克隆并且分析一系列 mod1 suppressors,我们揭示调整 mitochondrial ROS 和扳机 PCD 的产生的一条全面细胞器通讯小径。我们证明在 PLASTIDIAL NAD 依赖的 MALATE 脱氢酶(plNAD-MDH ) 的变化, chloroplastic DICARBOXYLATE TRANSPORTER 1 (DiT1 ) 并且(mMDH1 ) MITOCHONDRIAL MALATE 脱氢酶 1 能各在 mod1 救 ROS 累积和 PCD 显型,经由 malate 梭从叶绿体表明直接通讯到线粒体。进一步的研究证明这些元素在不同光周期条件下面在氧化还原作用动态平衡和植物生长起关键作用。而且,我们表明 ROS 水平和 PCD 显著地在房间,它能是戏剧性地稀释了由的对待 malate 的 HeLa 被增加人的基因 MDH2 击倒, Arabidopsis mMDH1 的 ortholog。这些结果揭开在植物和动物系统的一条保存导致 malate 的 PCD 小径,革命化我们在细胞器之间的通讯的理解。 | Yannan Zhao Lilan Luo Jiesi Xu Peiyong Xin Hongyan Guo Jian Wu Lin Bai Guodong Wang Jinfang Chu Jianru Zuo Hong Yu Xun Huang Jiayang Li | 2018 | Cell Research2018，28，4： | 24 |
| 12 | Integrated research methods in watershed science显示文摘We discuss the concepts, research methods, and infrastructure of watershed science. A watershed is a basic unit and possesses all of the complexities of the land surface system, thereby making it the best unit for practicing Earth system science. Watershed science is an Earth system science practiced on a watershed scale, and it has developed rapidly over the previous two decades. The goal of watershed science is to understand and predict the behavior of complex watershed systems and support the sustainable development of watersheds. However, watershed science confronts the difficulties of understanding complex systems, achieving scale transformation, and simulating the co-evolution of the human-nature system. These difficulties are fundamentally methodological challenges. Therefore, we discuss the research methods of watershed science, which include the self-organized complex system method, the upscaling method dominated by statistical mechanics, Darwinian approaches based on selection and evolutionary principles, hydro-economic and eco-economic methods that emphasize the human-nature system co-evolution, and meta-synthesis for addressing unstructured problems. These approaches together can create a bridge between holism and reductionism and work as a group of operational methods to combine hard and soft integrations and capture all aspects of both natural and human systems. These methods will contribute to the maturation of watershed science and to a methodology that can be used throughout land-surface systems science. | CHENG GuoDong LI Xin | 2015 | Science China Earth Sciences2015，58，7： | 23 |
| 13 | Antioxidant effects of the orientin and vitexin in Trollius chinensis Bunge in D-galactose-aged mice显示文摘Total flavonoids are the main pharmaceutical components of Trollius chinensis Bunge, and orientin and vitexin are the monomer components of total flavonoids in Trollius chinensis Bunge. In this study, an aged mouse model was established through intraperitoneal injection of D-galactose for 8 weeks, followed by treatment with 40, 20, or 10 mg/kg orientin, vitexin, or a positive control (vitamin E) via intragastric administration for an additional 8 weeks. Orientin, vitexin, and vitamin E improved the general medical status of the aging mice and significantly increased their brain weights. They also produced an obvious rise in total antioxidant capacity, superoxide dismutase, catalase, and glutathione peroxidase levels in the serum, and the levels of superoxide dismutase, catalase and glutathione peroxidase, Na+-K+-ATP enzyme, and Ca2+-Mg2+-ATP enzyme in the liver, brain and kidneys. In addition, they significantly reduced malondialdehyde levels in the liver, brain and kidney and lipofuscin levels in the brain. They also significantly improved the neuronal ultrastructure. The 40 mg/kg dose of orientin and vitexin had the same antioxidant capacity as vitamin E. These experimental findings indicate that orientin and vitexin engender anti-aging effects through their antioxidant capacities. | Fang An Guodong Yang Jiaming Tian Shuhua Wang | 2012 | Neural Regeneration Research2012，7，33： | 20 |
| 14 | Structural Analyses of Short-Chain Prenyltransfemses Identify an Evolutionarily Conserved GFPPS Clade in Brassicaceae Plants显示文摘Terpenoids 是专业化植物的代谢物的最大、很多样的类,它在植物开发期间在多样的生理的进程工作。在植物 terpenoids 的生合成,短链的 prenyltransferases (SC 磅) 和萜烯 synthases (TPS ) ,在决定 terpenoid 的 playcritical 角色差异。有不同的链长度的 SC 磅 biosynthesize prenyl 焦磷酸盐,和这些混合物是 terpenoids 的直接先锋。Arabidopsis thaliana 拥有其功能清楚地不被知道的 SC 磅的亚群。在这研究,我们集中于 10 geranylgeranyl 焦磷酸盐象 synthase 一样[GGPPSL ] 蛋白质,它通常被认为生产 GGPP [C20 ] 。我们发现 Arabidopsis GGPPSL 基因家庭的成员的一个子集经历了 neo-functionalization:GGPPSL6, 7, 9,和 10 主要举办 geranylfarnesyl 焦磷酸盐 synthase 活动(C25;renamedAtGFPPS1, 2, 3,和 4 ) ,并且 GGPPSL8 生产甚至更长的链 prenyl 焦磷酸盐(≥C30;renamedpolyprenyl 焦磷酸盐 synthase 2, AtPPPS2 ) 。由解决 AtGFPPS2, AtPPPS2,和 AtGGPPS11 的水晶结构,我们揭示 SC 磅的产品链长度决心机制并且作为 “three floors” 解释它当模特儿。用这个模型,我们识别了在 Brassicaceae 植物散布并且发现 GFPPS 基因典型地与编码 TPS 的基因一起发生的新奇 GFPPS clade,形成 GFPPS-TPS 基因簇。 | ChengyuanWang Qingwen Chen Dongjie Fan Jianxu Li Guodong Wang Peng Zhang | 2016 | Molecular Plant2016，9，2： | 19 |
| 15 | Farnesoid X receptor,the bile acid sensing nuclear receptor,in liver regeneration显示文摘The liver is unique in regenerative potential, which could recover the lost mass and function after injury from ischemia and resection. The underlying molecular mechanisms of liver regeneration have been extensively studied in the past using the partial hepatectomy(PH) model in rodents, where 2/3 PH is carried out by removing two lobes. The whole process of liver regeneration is complicated, orchestrated event involving a network of connected interactions, which still remain fully elusive. Bile acids(BAs) are ligands of farnesoid X receptor(FXR), a nuclear receptor of ligand-activated transcription factor. FXR has been shown to be highly involved in liver regeneration. BAs and FXR not only interact with each other but also regulate various downstream targets independently during liver regeneration. Moreover, recent findings suggest that tissue-specific FXR also contributes to liver regeneration significantly. These novel findings suggest that FXR has much broader role than regulating BA, cholesterol, lipid and glucose metabolism. Therefore, these researches highlight FXR as an important pharmaceutical target for potentialuse of FXR ligands to regulate liver regeneration in clinic. This review focuses on the roles of BAs and FXR in liver regeneration and the current underlying molecular mechanisms which contribute to liver regeneration. | Guodong Li Grace L.Guo | 2015 | Acta Pharmaceutica Sinica B2015，5，2： | 19 |
| 16 | Cell-Mediated Immunity Imbalance in Patients with Intrahepatic Cholestasis of Pregnancy显示文摘Decidual lymphocytes may mediate fetal trophoblast recognition and regulate maternal immune reaction and play an essential role in the maintenance of normal pregnancy. The aim of this study was to compare the percentage of T cells, natural killer (NK) cells and natural killer T (NKT) cells within decidual parietalis of normal pregnant controls (NP) and patients with intraheptic cholestasis of pregnancy (ICP), and to investigate the production of interleukin-4 (IL-4), interferon-γ (IFN-γ) in the culture supernatant of decidual parietalis mononuclear cells (DPMCs). Compared with controls, the decidua parietalis from ICP were characterized with significant increased percentages of CD3-CD56+ cells, CD3+CD56+ cells, CD56+CD16+ cells, CD56+CD16- cells, CD56+NKG2D+ cells, and the significant decreased percentages of CD3+ cells, CD3+CD4+ cells. There were no differences found for the percentage of CD3+CD8+ cells, CD56+NKG2A+ cells between control and study group. In addition, the enhanced concentration of IFN-γ was presented in culture supernatant of DPMCs from ICP. It was suggested that the increased NK cells, NKT cells and the decreased T cells in the decidual parietalis and over-secretion of IFN-γ could be correlated with the pathophysiology of ICP patients. | Bin Ling Fengqiu Yao Ying Zhou Zhengzheng Chen Guodong Shen Yuanyuan Zhu | 2007 | Cellular & Molecular Immunology2007，4，1： | 19 |
| 17 | Simple and cost-effective methods for precise analysis of trace element abundances in geological materials with ICP-MS显示文摘Inductively coupled plasma mass spectrometry(ICP-MS) is the most commonly used technique to determine the abundances of trace elements in a wide range of geological materials. However, incomplete sample digestion, isobaric interferences and instrumental drift remain obvious problems that must be overcome in order to obtain precise and accurate results. For this reason, we have done many experiments and developed a set of simple, cost-effective and practical methods widely applicable for precise and rapid determination of trace element abundances in geological materials using ICP-MS. Commonly used high-pressure digestion technique is indeed effective in decomposing refractory phases, but this inevitably produces fluoride complexes that create new problems. We demonstrate that the fluoride complexes formed during high-pressure digestion can be readily re-dissolved using high-pressure vessel at 190 °C for only 2 h for 50 mg sample. In the case of isobaric interferences, although oxide(e.g., MO+/M+) and hydroxide(e.g., MOH+/M+) productivity is variable between runs, the(MO+/M+)/(Ce O+/Ce+)and(MOH+/M+)/(Ce O+/Ce+) ratios remain constant, making isobaric interference correction for all other elements of interest straightforward, for which we provide an easy-to-use off-line procedure. We also show that mass-time-intensity drift curve is smooth as recognized previously, for which the correction can be readily done by analyzing a quality-control(QC) solution and using off-line Excel VBA procedure without internal standards. With these methods, we can produce data in reasonable agreement with recommended values of international rock reference standards with a relative error of <8% and precision generally better than 5%. Importantly, compared to the widely used analytical practice, we can effectively save >60% of time(e.g., <24 h vs. >60 h). | Shuo Chen Xiaohong Wang Yaoling Niu Pu Sun Meng Duan Yuanyuan Xiao Pengyuan Guo Hongmei Gong Guodong Wang Qiqi Xue | 2017 | Science Bulletin2017，62，4： | 17 |
| 18 | Ground-temperature controlling effects of duct-ventilated railway embankment in permafrost regions显示文摘Based on observed data from field-testing embankment of the Qinghai-Tibet Railway, ground-temperature controlling effect of duct-ventilated embankment is studied in this paper.The results show that ventilation ducts can effectively cool the soils surrounding the ducts of the embankment, and the heat budget of the ambient soils in a year shows as heat release. Temperature status of the permafrost below the embankment with ducts buried in the relatively high position is similar to that of the common embankment. The permafrost processes warming all along in the two freezing-thawing cycles when the embankment was constructed. However, the temperature of the frozen soils below the embankment, in which the ducts buried in the relatively low position, rises a little in the initial stage. After that, it cools down gradually. At the same time,ventilation ducts can effectively reduce the thermal disturbance caused by the filled soils. The frozen soils below the common embankment and that with high-posited ducts absorb heat all along in the initial two cycles. While the soils below the embankment with low-posited ducts begin to release heat in the second cycle. This phenomenon proves that the ventilation embankment with low-posited ducts shows efficient temperature-controlling effect. Such embankment can actively cool the subgrade soils and therefore keeps the roadbed thermally stable. | NIU Fujun CHENG Guodong YU Qihao | 2004 | Science China Earth Sciences2004，47，z1： | 16 |
| 19 | Long-chain alkenones in Hotong Qagan Nur Lake sediments and its paleoclimatic implications显示文摘The long-chain alkenones present in the shallow sediment of Hotong Qagan Nur Lake in China are reported. According to the similarity of compositions and distributions of the alkenones determined commonly in the sediment section to those of marine sediment, it is reasonably referred that the alkenones might also originate from Prymnesiophyceae. ln addition, the parameter U37k'of alkenone is in positive correlation to δ18O values of authigenic calcium and magnesium minerals. This indicates that the parameter U37k'of long-chain alkenone is also available to indicate paleoclimate of high-salinity alkaline lake. | Guoying Sheng Keqin Cai Xuexian Yang Jialan Lu Guodong Jia Ping’an Peng Jiamo Fu | 1999 | Chinese Science Bulletin1999，44，3： | 15 |
| 20 | Diurnal and Seasonal Dynamics of Soil Respiration at Temperate Leymus Chinensis Meadow Steppes in Western Songnen Plain, China显示文摘To evaluate the diurnal and seasonal variations in soil respiration(Rs) and understand the controlling factors, we measured carbon dioxide(CO2) fluxes and their environmental variables using a LI-6400 soil CO2 flux system at a temperate Leymus chinensis meadow steppe in the western Songnen Plain of China in the growing season(May–October) in 2011 and 2012. The diurnal patterns of soil respiration could be expressed as single peak curves, reaching to the maximum at 11:00–15:00 and falling to the minimum at 21:00–23:00(or before dawn). The time-window between 7:00 and 9:00 could be used as the optimal measuring time to represent the daily mean soil CO2 efflux. In the growing season, the daily value of soil CO2 efflux was moderate in late spring(1.06–2.51 μmol/(m2·s) in May), increased sharply and presented a peak in summer(2.95–3.94 μmol/(m2·s) in July), and then decreased in autumn(0.74–0.97 μmol/(m2·s) in October). Soil temperature(Ts) exerted dominant control on the diurnal and seasonal variations of soil respiration. The temperature sensitivity of soil respiration(Q10) exhibited a large seasonal variation, ranging from 1.35 to 3.32, and decreased with an increasing soil temperature. Rs gradually increased with increasing soil water content(Ws) and tended to decrease when Ws exceeded the optimum water content(27%) of Rs. The Ts and Ws had a confounding effect on Rs, and the two-variable equations could account for 72% of the variation in soil respiration(p < 0.01). | WANG Ming LIU Xingtu ZHANG Jitao LI Xiujun WANG Guodong LI Xiaoyu LU Xinrui | 2014 | Chinese Geographical Science2014，24，3： | 15 |
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