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Uniaxial Time-Dependent Ratcheting of SS304 Stainless Steel at High Temperatures

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Journal of Iron and Steel Research International 2007年第1期14卷 53-59页

作者： KANG Guo-zheng ZHANG juan sun Ya-fang KAN Qian-hua Department of Applied Mechanics and Engineering Southwest Jiaotong University Chengdu 610031 Sichuan China

The uniaxial time-dependent strain cyclic behaviors and ratcheting of SS304 stainless steel were studied at high temperatures （350 ℃ and 700 ℃）. The effects of straining and stressing rates, holding time at the peak and/or valley of each cycle in addition to ambient temperature on the cyclic softening/hardening behavior and ratcheting of the material were discussed. It can be seen from experimental results that the material presents remarkable time dependence at 700 ℃, and the ratcheting strain depends greatly on the stressing rate, holding time and ambient temperature. Some significant conclusions are obtained, which are useful to build a constitutive model describiog the time-dependent cyclic deformation of the material.

关键词： SS304 stainless steel time dependence ratcheting high temperature

Influences of Copper Speciation on Toxicity to Microorganisms in Soils

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Biomedical and Environmental Sciences 2006年第6期19卷 409-413页

作者： SHU-juan sun JIAN XU, SHu-GuI DAI XUE HAN College of Environmental Science and Engineering Nankai University Tianjin 300071 China

Objective To investigate the relationship between copper speciation and microbial features （microbial communities and copper tolerance level） in order to determine the adverse effect of different forms of Cu on microorganisms. Methods Tessier＇s sequential extraction procedure was used to qualify the different Cu forms （exchangeable, carbonate bound, Fe/Mn oxide bound, residue and organic matter bound）, and the copper tolerance level （expressed as IC50, influence concentration） was measured by the plate-count method. Results By simple correlation analysis, the ICs0 was positively correlated with the concentration of exchangeable Cu （R2=0.8204）, while weakly correlated with other forms of Cu. Conclusion The bacterial community tolerance increases in the copper-contaminated soil while sensitive bacteria decrease in the copper-contaminated soils. The exchangeable Cu exerts high toxicity to microbial communities.

关键词： Copper speciation Toxicity Microbial community

Entire Solutions for Nonlocal Dispersal Equations with Bistable Nonlinearity: Asymmetric Case

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Acta Mathematica Sinica,English Series 2019年第11期35卷 1771-1794页

作者： Li ZHANG Wan Tong LI Zhi Cheng WANG Yu juan sun School of Science Chang’an UniversityXi’an 710064P.R.China School of Mathematics and Statistics Lanzhou UniversityLanzhou 730000P.R.China ISN Laboratory Xidian UniversityXi’an 710071P.R.China

This paper mainly focuses on the entire solutions of a nonlocal dispersal equation with asymmetric kernel and bistable nonlinearity. Compared with symmetric case, the asymmetry of the dispersal kernel function makes more diverse types of entire solutions since it can affect the sign of the wave speeds and the symmetry of the corresponding nonincreasing and nondecreasing traveling *** divide the bistable case into two monostable cases by restricting the range of the variable, and obtain some merging-front entire solutions which behave as the coupling of monostable and bistable waves. Before this, we characterize the classification of the wave speeds so that the entire solutions can be constructed more clearly. Especially, we investigate the influence of the asymmetry of the kernel on the minimal and maximal wave speeds.

关键词： Entire solution traveling wave solution nonlocal dispersal asymmetry

12个饲用燕麦品种在乌兰察布生产力的综合评价

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草地学报 2024年第4期32卷 1169-1176页

作者：包文龙任家辉张腾薇赵金梅王照兰王凤梧唐加高殷国梅韩云鹏孙娟娟中国农业科学院草原研究所/内蒙古草业与草原研究院内蒙古呼和浩特010010 乌兰察布市农林科学研究所内蒙古乌兰察布012000 商都县啊咪啦农业科技公司内蒙古商都013450 内蒙古自治区农牧业科学院内蒙古呼和浩特010031 乌兰察布市科学技术事业发展中心内蒙古乌兰察布012001

为筛选适合在乌兰察布地区旱作条件下推广种植的优质饲用燕麦(Avena sativa L.)品种,对12个国内外燕麦品种的农艺性状、产量性状和营养品质进行测定分析。结果表明:不同燕麦品种在乌兰察布地区的产量性状差异较大,‘白燕1号’‘百事’... 详细信息

为筛选适合在乌兰察布地区旱作条件下推广种植的优质饲用燕麦(Avena sativa L.)品种,对12个国内外燕麦品种的农艺性状、产量性状和营养品质进行测定分析。结果表明:不同燕麦品种在乌兰察布地区的产量性状差异较大,‘白燕1号’‘百事’‘摩登’和‘麦迪逊’4个品种的鲜草产量超过了20000 kg·hm^(-2),干草产量‘麦迪逊’最高达5892.23 kg·hm^(-2),干鲜比最高的是‘迪昂’和‘优牧1号’;粗蛋白含量最高的品种是‘迪昂’‘悍马’和‘优牧1号’,酸性洗涤纤维最低的是‘莫妮卡’,中性洗涤纤维最低的是‘悍马’,相对饲喂价值最高的为‘悍马’和‘莫妮卡’。叶占比对于燕麦品质的影响显著,与粗蛋白和相对饲喂价值呈显著正相关(P<0.05)。灰色关联度分析结果表明,16个指标中权重系数排在前5位分别是茎粗、株高、干草产量、穗占比和粗蛋白含量。综合生产性能和营养品质表现,兼顾高产优质,乌兰察布地区推荐‘悍马’‘迪昂’和‘优牧1号’。

关键词：饲用燕麦生产性能营养品质灰色关联度

Quantitative proteomics reveals key pathways in the symbiotic interface and the likely extracellular property of soybean symbiosome

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Journal of Genetics and Genomics 2023年第1期50卷 7-19页

作者： Yu Luo Wei Liu juan sun Zheng-Rong Zhang Wei-Cai Yang The State Key Laboratory for Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China

An effective symbiosis between legumes and rhizobia relies largely on diverse proteins at the plantrhizobium interface for material transportation and signal transduction during symbiotic nitrogen ***,we report a comprehensive proteome atlas of the soybean symbiosome membrane(SM),peribacteroid space(PBS),and root microsomal fraction(RMF)using state-of-the-art label-free quantitative proteomic *** total,1759 soybean proteins with diverse functions are detected in the SM,and 1476 soybean proteins and 369 rhizobial proteins are detected in the *** diversity of SM proteins detected suggests multiple origins of the *** comparative analysis highlights amino acid metabolism and nutrient uptake in the SM,indicative of the key pathways in nitrogen *** detection of soybean secretory proteins in the PBS and receptor-like kinases in the SM provides evidence for the likely extracellular property of the symbiosome and the potential signaling communication between both symbionts at the symbiotic *** proteomic data provide clues for how some of the sophisticated regulation between soybean and rhizobium at the symbiotic interface is achieved,and suggest approaches for symbiosis engineering.

关键词： Quantitative proteomics Symbiotic nitrogen fixation Symbiosome membrane Peribacteroid space Soybean

四川省三级甲等医院外科护士工作投入在工作疏离感与职业生涯成功间的中介作用

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职业与健康 2024年第15期40卷 2076-2080页

作者：蒋嫚李丹陈是谨孙娟德阳市人民医院外科

目的调查四川省三级甲等医院外科护士工作疏离感、工作投入及职业生涯成功的现状，并探讨工作投入在工作疏离感与职业生涯成功间的中介作用。方法采用横断面研究设计，于2023年1—3月采用便利抽样法选取四川省8所三级甲等医院217名外... 详细信息

目的调查四川省三级甲等医院外科护士工作疏离感、工作投入及职业生涯成功的现状，并探讨工作投入在工作疏离感与职业生涯成功间的中介作用。方法采用横断面研究设计，于2023年1—3月采用便利抽样法选取四川省8所三级甲等医院217名外科护士为调查对象，采用一般资料调查表、工作疏离感量表、职业生涯成功量表及工作投入量表进行数据收集，并对数据进行分析。结果四川省8所三级甲等医院外科护士工作投入得分为（54.61±11.22）分，工作疏离感得分为（49.23±10.73）分，职业生涯成功得分为（33.74±7.66）分。不同年龄、月均收入、文化程度、职称、合同类型、是否为专科护士的外科护士工作投入得分比较，差异均有统计学意义（均P<0.05）；不同婚姻状况、月均收入、合同类型、职称、是否为专科护士的外科护士工作疏离感得分比较，差异均有统计学意义（均P<0.05）；不同婚姻状况、职称、文化程度、合同类型、月均收入、是否为专科护士的外科护士职业生涯成功得分比较，差异均有统计学意义（均P<0.05）。三级甲等医院外科护士工作投入总分及其各维度得分与职业生涯成功总分及其各维度得分均呈正相关（均P<0.05）；工作疏离感总分及其各维度得分与职业生涯成功总分及其各维度得分均呈负相关（均P<0.05）；工作投入总分及其各维度得分与工作疏离感总分及其各维度得分均呈负相关（均P<0.05）。工作投入在四川省三级甲等医院外科护士工作疏离感与职业生涯成功间起部分中介作用，中介效应为-0.084，中介效应占总效应的14.76%。结论四川省8所三级甲等医院外科护士职业生涯成功水平有待进一步提高，工作投入在工作疏离感与职业生涯成功间起部分中介作用，提高护士工作投入水平可降低其工作疏离感，从而促进其职业生涯成功的提升。

关键词：外科护士职业生涯成功工作疏离感工作投入中介作用

CICARE沟通模式在宫颈癌子宫全切患者中的应用评价

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四川解剖学杂志 2024年第2期32卷 75-77页

作者：程慧范丹丹孙瑞娟郑州大学附属肿瘤医院/河南省肿瘤医院妇瘤科二病区河南省肿瘤医院妇瘤科郑州450000

目的:探讨CICARE沟通模式在宫颈癌子宫全切患者中的应用价值.方法:选取2019年1月至2021年12月本院收治的96例宫颈癌子宫全切患者为研究对象.按照心理干预方式,将其分为观察组(n=49,采用CICARE沟通模式干预)和对照组(n=47,采用常规沟通... 详细信息

目的:探讨CICARE沟通模式在宫颈癌子宫全切患者中的应用价值.方法:选取2019年1月至2021年12月本院收治的96例宫颈癌子宫全切患者为研究对象.按照心理干预方式,将其分为观察组(n=49,采用CICARE沟通模式干预)和对照组(n=47,采用常规沟通模式干预).比较两组患者干预后的心理状态[采用焦虑自评量表(SAS)和抑郁自评量表(SDS)评估],生存质量[采用生存质量测定量表简表(QOL-BREF)评估]及患者的依从性.结果:干预后,观察组患者SAS、SDS评分均低于对照组,差异均有统计学意义(P<0.05);观察组患者QOL-BREF评分高于对照组,差异有统计学意义(P<0.05);观察组患者依从性(48/49,97.96%)高于对照组(37/47,78.72%),差异有统计学意义(P<0.05).结论:利用CICARE模式与宫颈癌子宫全切患者进行沟通,能有效改善患者的心理状态,缓解精神压力,提高患者的生存质量.

关键词： CICARE沟通模式宫颈癌子宫全切心理状态生存质量

Activation of CFTR-mediated Cl^- Transport by Capsaicinoids in Cell Culture Model

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Chemical Research in Chinese Universities 2009年第2期25卷 220-223页

作者： ZHAO Xue-hang HOU Tmg-ting GE Hong sun juan-juan YANG Hong MA Tong-hui Membrane Channel Research Laboratory Northeast Normal University Changchun 130024 P. R. China Liaoning Provincial Key Laboratory of Biotechnology and Drug Discovery School of Life Sciences Liaoning Normal University Dalian 116029 P. R. China

Previous studies reported that capsaicin potentiates AF508 mutant cystic fibrosis transmembrane conductance regulator（CFTR） channel gating defect by transfected cell-based assays. It has been postulated that orally ingested capsaicin may conceptually be used to develop a therapeutic strategy to treat gastrointestinal disorders in CF patients. We tried to reproduce and extend those pre-clinical data of previous studies. Cell-based fluorescence func- tional measurements in Fischer thyroid epithelial cells（FRT） expressing CFTR showed no effect of capsaicin on potentiating AF508-CFTR, while genistein showed a strongly positive activity. Studies show that capsaicin and dihy- drocapsaicin activated cAMP-prestimulated wild-type CFTR in a dose-dependent manner with a maximal response of 70% of that activated by genistein, thus gave an apparent EC50 of （40.4±6.8）μmol/L and （150.2±7.4） μtmol/L respectively. Preliminary study shows that the binding sites for capsaicin and dihydrocapsaicin may be probably partially overlapped with that for genistein because the maximal activation of wild-type CFTR with genistein is partially blocked by caosaicin and dihydrocapsaicin.

关键词： Capsaicinoid Cystic fibrosis transmembrane conductance regulator(CFTR) Activation

N Mineralization as Affected by Long-Term N Fertilization and Its Relationship with Crop N Uptake

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Pedosphere 2006年第1期16卷 125-130页

作者： YAN De-Zhi WANG De-Jian sun Rui-juan LIN Jing-Hui Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China）. Graduate -School of the Chinese Academy of Sciences Beijing 100039 （China）

A field experiment established in 1997 was conducted to study the effect of long-term N fertilizer application on N mineralization in a paddy soil determined using a laboratory anaerobic incubation followed with a field incubation and to measure the relationship between in situ N mineralization and crop N uptake. To estimate N mineralization in the laboratory, soil samples were collected from plots with N application at different rates for six years and were incubated. Soils treated with fertilizer N mineralized more N than unfertilized soils and mineralization increased with N application rates. Also, the fraction of total N mineralized increased with increasing N fertilizer application. These findings meant that a substantial portion of previously applied N could be recovered slowly over time in subsequent crops. The field incubation of the plot receiving no fertilizer N showed that the NH4^＋-N concentration varied greatly during the rice-growing season and seasonal changes of N mineralization were due more to accumulation of NH4^＋-N than NO3^-N. Hice N uptake increased up to a maximum of 82 kg N ha^-1 during the season. The close agreement found between in situ N mineralization and rice N uptake suggested that the measurement of in situ N mineralization could provide useful recommendations for adequate fertilizer N application.

关键词： anaerobic incubation field incubation N application N mineralization N uptake