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Effect of Land Use on Soil Erosion and Nutrients in Dianchi Lake Watershed, China

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Pedosphere 2015年第1期25卷 103-111页

作者： NIU Xiao-Yin WANG Yan-Hua YANG Hao ZHENG jia-Wen ZOU Jun XU Mei-Na WU shan-shan XIE Biao College of Geography Sciences Nanjing Normal University College of Resource and Environmental Engineering Shandong University of Technology

Soil erosion and loss of soil nutrients have been a crucial environment threat in Southwest China. The land use and its impact on soil qualities continue to be highlighted. The present study was conducted to compare soil erosion under four land use types(i.e.,forestland, abandoned farmland, tillage, and grassland) and their effects on soil organic carbon(SOC), total nitrogen(TN) and total phosphorus(TP) in the Shuanglong catchment of the Dianchi Lake watershed, China. There were large variations in the erosion rate and the nutrient distributions across the four land use types. The erosion rates estimated by137 Cs averaged 2 133 t km-2year-1under tillage and abandoned farmland over the erosion rate of non-cultivated sites, and the grasslands showed a net deposition. For all sites, the nutrient contents basically decreased with the soil depth. Compared with tillage and abandoned farmland, grassland had the highest SOC and TN contents within 0–40 cm soil layer, followed by forestland. The significant correlations between137 Cs, SOC and TN were observed. The nutrient loss caused by erosion in tillage was the highest. These results suggested that grassland and forestland would be beneficial for SOC and TN sequestration over a long-term period because of their ability to reduce the loss of nutrients by soil erosion. Our study demonstrated that reduction of nutrient loss in the red soil area could be made through well-managed vegetation restoration measures.

关键词： 137Cs nutrient loss soil organic carbon total nitrogen total phosphorus vegetation restoration

Cyber-physical model for efficient and secured operation of CPES or energy Internet

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Science China(Information Sciences) 2018年第11期61卷 5-7页

作者： Xiaohong GUAN Zhanbo XU Qing-shan jia Kun LIU Yadong ZHOU Ministry of Education Key Lab for Intelligent Networks and Network Security Xi'an Jiaotong University Center for Intelligent and Networked Systems Department of AutomationBeijing National Research Center for Information Science and Technology (BNRist) Tsinghua University

Dear editor,Global energy and environmental crisis is one of the most serious issues on the sustainable development of human society in the 21st century. Making full use of renewable energy sources is one of the most effective ways to resolve the energy and environmental problems. However, we are facing the serious challenges due to the uncertain natures of the renewable energy sources.

关键词： In

Characteristics of the dynamic changes in active accumulated temperature in Sichuan,China in the last 51 years against the background of climate change

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Journal of Mountain Science 2023年第1期20卷 115-128页

作者： WANG Hao jiaNG shan WANG jia-bin YU Xiao-hang HUANG jia-ning LIU jian-gang School of Geography Liaoning Normal UniversityDalian116029China

It is of utmost necessity to understand the dynamics of regional active accumulated temperature(AAT)to cope with the negative impacts of global warming on agroforestry development and food security and to provide a real-time and effective reference basis for regional agroforestry *** daily temperature data from 30 meteorological stations in Sichuan Province from 1970 to 2020,and sea surface temperature(SST)index data from the Atlantic Multiphase Oscillation(AMO)and Pacific Decadal Oscillation(PDO)were used for the *** Province was divided into the western region(WS)and the eastern region(ES),considering 1000 m above sea level as the *** spatiotemporal characteristics of≥0℃ and≥10℃ active accumulated temperature(AAT0,AAT10)in WS and ES were analyzed comprehensively using 5-day average sliding,empirical orthogonal function(EOF),ensemble empirical mode decomposition(EEMD),and multiple mutation *** results show that(1)AAT0 and AAT10 of WS ranged from 3034℃ to 3586℃ and 1971℃ to 2636℃,respectively,while the AAT0 and AAT10 of ES ranged from 5863℃ to 6513℃ and 4847℃ to 5875℃,*** period around 1997 was a significant abrupt change,and the AAT in the province generally increased during the subsequent time period(2)AAT in the study area is mainly driven by the fluctuations of AMO,as reflected by the low-to-high variation of AAT coinciding with the jump of the cold-to-warm phase of *** different time scale fluctuations in the past 51 years,the major cycle for both AAT0 and AAT10 in WS is 3.40 a,while the major cycles in ES are 3.64 a and 3.19 a,respectively with a sub-cycle of 7.29 *** fluctuation has an insignificant periodic characteristic of 25.50 a on the interdecadal scale(3)The spatial heterogeneity of AAT in WS is prominent and is mainly reflected by the significantly warm conditions in the south of the WS region and relatively slight warm conditions in the north,as well as by the isolated cooling area in the f

关键词： Sichuan Province Active accumulated temperature(AAT) Ensemble empirical mode decomposition(EEMD) Mutation analysis Empirical orthogonal function(EOF)

Identification of Bovine Casein Phosphorylation Using Titanium Dioxide Enrichment in Combination with Nano Electrospray Ionization Tandem Mass Spectrometry

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Journal of Integrative Agriculture 2012年第3期11卷 439-445页

作者： LI shan-shan WANG jia-qi WEI Hong-yang YANG Yong-xin BU Deng-pan ZHANG Le-ying ZHOU Ling-yun State Key Laboratory of Animal Nutrition Institute of Animal ScienceChinese Academy of Agricultural SciencesBeijing 100193P.R.China

Protein phosphorylation is an important post-translational modification that regulates milk protein structure and *** objective of this study was to analyze the presence of phosphorylated *** milk proteins were first separated by SDS polyacrylamide gel *** in gels digestion and extraction,phosphorylated peptides were enriched by titanium dioxide and identified by ultra performance liquid chromatography coupled with nano electrospray ionization tandem mass *** method ensured the identification of 20 phosphorylated peptides,including 7 phosphorylated forms of α_s1-casein,8 α_s2-casein,and 5 β-*** phosphorylated sites derived from 3 α_s1-caseins,3 α_s2-caseins,and 2 β-caseins were also identified,and localized on residues Ser^61,Ser^63 and Ser^130 in α_s1-casein;Thr^145,Ser^146 and Ser^158 in α_s2-casein;and Ser^50 and Thr^56 in β-*** findings provide valuable information for investigating casein phosphorylation of the bovine milk.

关键词： bovine milk casein phosphorylation mass spectrometry titanium dioxide enrichment

Characterization and functional analysis of hsp18.3 gene in the red flour beetle, Tribolium castaneum

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Insect Science 2019年第2期26卷 263-273页

作者： jia Xie Xing-Xing Hu Meng-Fan Zhai Xiao-Juan Yu Xiao-Wen Song shan-shan Gao Wei Wu Bin Li jiangsu Key Laboratory for Biodiversity and Biotechnology College of Life Sciences Nanjing Normal University Nanjing China

Small heat shock proteins (sHSPs) are diverse and mainly function as molecular chaperones to protect organisms and cells from various stresses. In this study, hsp 18.3, one Tribolium castaneum species-specific shsp、has been identified. Quantitative real-time polymerase chain reaction illustrated that Tchsp 18.3 is expressed in all developmental stages, and is highly expressed at early pupal and late adult stages, while it is highly expressed in ovary and fat body at the adult period. Moreover, it was up-regulated 4532 ± 396-fold in response to enhanced heat stress but not to cold stress;meanwhile the lifespan of adults in ds-Tchsp 18.3 group reduced by 15.8% from control group under starvation. Laval RNA interference (RNAi) of Tchsp 18.3 caused 86.1%±4.5% arrested pupal eclosion and revealed that Tchsp 18.3 played an important role in insect development. In addition, parental RNAi of Tchsp 18.3 reduced the oviposition amount by 94.7%. These results suggest that Tchsp 18.3 is not only essential for the resistance to heat and starvation stress, but also is critical for normal development and reproduction in T. castaneum.

关键词： development reproduction stress Tchspl8.3 Tribolium castaneum

Effect of Carbon Content on Mechanical Properties and Weather Resistance of High Performance Bridge Steels

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Journal of Iron and Steel Research International 2009年第6期16卷 63-69页

作者： GUO jia shanG Cheng-jia YANG shan-wu WANG Ying WANG Lian-wei HE Xin-lai Material Science and Engineering School University of Science and Technology Beijing Beijing 100083 China Metallurgical and Ecological Engineering School University of Science and Technology Beijing Beijing 100083 China

The influence of carbon content on the mechanical properties of high yield strength bridge steel has been in- vestigated. The results show that the excellent mechanical properties and corrosion resistance are obtained for the steel with carbon content of 0.03% -0. 05% （mass percent）. According to the results, a new weathering bridge steel plate with carbon content of 0. 045% （mass percent） has been developed. The appropriate controlled cooling process should be taken due to the results of CCT （continuous cooling transformation） and TTT （time-temperature-transformation） to ensure both microstructure and mechanical properties. CCT curve of the newly developed steel shows that when accelerated cooling speed is higher than 5 ℃/s, the intermediate transformation products can be formed. The TTT curve displays that the intermediate transformation temperature ranges from 600 to 530 ℃. Yield strength of the newly developed steels reaches 500 MPa, and their elongation and toughness are excellent.

关键词： low-carbon bridge steel weathering steel intermediate transformation

Improvement of the stability of Hg/AC catalysts by CsCl for the high-temperature hydrochlorination of acetylene

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Chinese Chemical Letters 2016年第6期27卷 822-826页

作者： Xiao-Long Xu jia Zhao Chun-shan Lu Tong-Tong Zhang Xiao-Xia Di shan-Chuan Gu Xiao-Nian Li Institute of Industrial Catalysis of Zhejiang University of Technology State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology

Activated carbon-supported mercuric chloride（HgCl2） is used as an industrial catalyst for acetylene hydrochlorination. However, the characteristic of easy sublimation of HgCl2 leads to the deactivation o the catalyst. Here, we showed that the thermal stability of the Hg/AC catalyst can be evidently improved when Cs Cl is added into the Hg/AC catalyst. Compared with the pure Hg/AC catalyst, the sublimation rate of HgCl2 from the Hg–Cs/AC catalyst decreased significantly and the Hg–Cs/AC catalyst showed bette catalytic activity and stability in the reaction. This promoting effect is related to the existence of cesium mercuric chlorides（CsxHgyCl（x＋2y）） highlighted by XRD, HR-TEM and EDX analyses. Thus, reacting HgCl2 with alkali chlorides to form alkali-mercuric chlorides may be a key to design highly efficient and thermally stable mercuric chloride catalyst for hydrochlorination reactions.

关键词： Cesium chloride Mercuric chloride Sublimation Hydrochlorination of acetylene Cesium–mercuric chlorides

Development of a prediction model for enteral feeding intolerance in intensive care unit patients:A prospective cohort study

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World Journal of Gastrointestinal Surgery 2022年第12期14卷 1363-1374页

作者： Xue-Mei Lu Deng-Shuai jia Rui Wang Qing Yang shan-shan Jin Lan Chen School of Nursing Shanghai Jiao Tong UniversityShanghai 200025China Department of Nursing Shanghai General HospitalShanghai Jiao Tong UniversityShanghai 200080China Department of Critical Care Medicine Shanghai General HospitalShanghai Jiao Tong UniversityShanghai 200080China

BACKGROUND Enteral nutrition(EN)is essential for critically ill ***,some patients will have enteral feeding intolerance(EFI)in the process of *** To develop a clinical prediction model to predict the risk of EFI in patients receiving EN in the intensive care *** A prospective cohort study was *** enrolled patients’basic information,medical status,nutritional support,and gastrointestinal(GI)symptoms were *** baseline data and influencing factors were *** regression analysis was used to establish the model,and the bootstrap resampling method was used to conduct internal *** The sample cohort included 203 patients,and 37.93%of the patients were diagnosed with *** the final regression analysis,age,GI disease,early feeding,mechanical ventilation before EN started,and abnormal serum sodium were *** the internal validation,500 bootstrap resample samples were performed,and the area under the curve was 0.70(95%CI:0.63-0.77).CONCLUSION This clinical prediction model can be applied to predict the risk of EFI.

关键词： Enteral feeding intolerance Critical care medicine Clinical prediction model Nutrition assessment Nutritional support Critical care nursing

Microstructure characteristics of segregation zone in 17-4PH stainless steel piston rod

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Journal of Iron and Steel Research International 2017年第7期24卷 718-723页

作者： jia-long Tian Wei Wang Wei Yan Zhou-hua jiang Yi-yin shan Ke Yang School of Materials and Metallurgy Northeastern University Institute of Metal Research Chinese Academy of Sciences Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of Sciences

The segregation of Cu and Ni in a 17-4PH stainless steel piston rod has been confirmed to be responsible for the cracking after heat *** investigation showed that the segregation zone was composed of three layers,namely the fine grain martensitic layer,the coarse grain martensitic layer and the coarse grain austenitic layer from the matrix to the crack *** button ingots with the same chemical compositions as those three layers have been prepared to evaluate the grain size distribution,microstructure and mechanical *** effects of Cu and Ni segregation on the microstructures of those three layers have been explored by thermodynamic *** on the microstructure and mechanical properties results,an intensive understanding of the cracking in the segregation zone was therefore reached.

关键词： 17-4PH stainless steel Piston rod Segregation Thermodynamic calculation Crack