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Protein & Cell 2023年第2期14卷 153-157页

作者： Rujin Huang Jinyang Liu Xi Chen Ying Zhi Shuangyuan Ding Jia Ming yulin Li Yangming wang Jie Na Center for Stem Cell Biology and Regenerative Medicine School of MedicineTsinghua UniversityBeijing 100084China School of Life sciences Tsinghua UniversityBeijing 100084China Capital Medical University Beijing 100084China beijing Key Laboratory of Cardiometabolic Molecular Medicine Peking-Tsinghua Center for Life SciencesInstitute of Molecular MedicinePeking UniversityBeijing 100871China

Dear Editor,Maintenance of cardiomyocyte(CM)homeostasis is essential for normal heart ***-term imbalance in heart homeostasis could elicit irreversible adaptive change in cell structure and function and tissue architecture,exemplified as cardiac hyper-trophy and fibrosis,and eventually develop into heart failure(Shiojima et al.,2005).Therefore,identifying new genes and path-ways regulating CM homeostasis may help better understand the cause of cardiac hypertrophy.

关键词： homeostasis cardiac hypertrophy

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认识的本质再考察

唐都学刊 2003年第3期19卷 117-121页

作者：王维国杨鹏亮中国人民大学哲学系北京100872 陕西榆林学院社科部陕西榆林719000

对于认识的本质,我国新时期即改革开放以来的认识论研究已提出了各种各样的观点,如反映论、选择论和建构论等。反映只是认识产生和形成的基础,选择和建构只是认识过程中不可或缺的环节,单纯用反映、选择或建构不足以揭示认识的本质。从... 详细信息

对于认识的本质,我国新时期即改革开放以来的认识论研究已提出了各种各样的观点,如反映论、选择论和建构论等。反映只是认识产生和形成的基础,选择和建构只是认识过程中不可或缺的环节,单纯用反映、选择或建构不足以揭示认识的本质。从马克思现代实践认识论立场来看,反映论、选择论和建构论都未能对认识的社会交往前提和知识的公共性维度作出现实的说明。建构论只是对西方建构主义的一种引进,而西方建构主义虽然蕴含有把公共性看作为可靠认识的基础的思想,但并未对此作出明确的说明。但他仍对我们揭示认识的本质具有重要的启发意义。因此,作为反映论、选择论和建构论的辩证统一的认识本质观就必然要把认识看成为人们对客体能动的公共反映。

关键词：认识本质公共性

基于成本最优的抽水蓄能电站参与系统调峰调用顺序研究

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水力发电 2018年第4期44卷 92-95页

作者：张晋芳元博樊玉林王晓晨栗楠徐志成冯君淑国网能源研究院有限公司北京102209 国网新源控股有限公司技术中心北京100761

针对抽水蓄能电站与其他电源共同参与系统调峰调用顺序进行研究,在明确连续爬坡事件和单位调节容量成本等关键概念基础上,从调峰手段调用综合成本角度,提出了包括抽水蓄能电站在内的多种手段参与系统调峰的调用优化模型。算例验证表明,... 详细信息

针对抽水蓄能电站与其他电源共同参与系统调峰调用顺序进行研究,在明确连续爬坡事件和单位调节容量成本等关键概念基础上,从调峰手段调用综合成本角度,提出了包括抽水蓄能电站在内的多种手段参与系统调峰的调用优化模型。算例验证表明,利用本文方法可有效实现对系统内多种调峰手段排序,同时也表明抽水蓄能电站调用顺序与系统电源结构有关。

关键词：抽水蓄能连续爬坡事件调峰顺序单位调节容量成本

Migration routes of the endangered Oriental Stork(Ciconia boyciana)from Xingkai Lake,China,and their repeatability as revealed by GPS tracking

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Avian Research 2023年第2期14卷 215-222页

作者： Zeyu Yang Lixia Chen Ru Jia Hongying Xu Yihua wang Xuelei Wei Dongping Liu Huajin Liu yulin Liu Peiyu Yang Guogang Zhang Key Laboratory of Forest Protection of National Forestry and Grassland Administration National Bird Banding Center of ChinaEcology and Nature Conservation InstituteChinese Academy of ForestryBeijing100091China Xingkai Lake National Nature Reserve of Heilongjiang JixiHeilongjiang158300China

The Oriental Stork(Ciconia boyciana)is listed as'Endangered'on the International Union for the Conservation of Nature(IUCN)Red List of Threatened Species and is classified as a first category nationally protected bird species in *** this species'seasonal movements and migration will facilitate effective conservation to promote its *** tagged 27 Oriental Stork nestlings at Xingkai Lake on the Sanjiang Plain in Heilongjiang Province,China,used GPS tracking to follow them over the periods of 2014.2017 and 2019-2022,and confirmed their detailed migratory routes using the spatial analysis function of ArcGIS *** discovered four migration routes during autumn migration:one common long-distance migration route in which the storks migrated along the coastline of Bohai Bay to the middle and lower reaches of the Yangtze River for wintering,one short-distance migration route in which the storks wintered in Bohai Bay and two other migration routes in which the storks crossed the Bohai Strait around the Yellow River and wintered in South *** were no significant differences in the number of migration days,residence days,migration distances,number of stopovers and average number of days spent at stopover sites between the autumn and spring migrations(P>0.05).However,the storks migrated significantly faster in spring than in autumn(P=0.03).The same individuals did not exhibit a high degree of repetition in their migration timing and route selection in either autumn or spring *** storks from the same nest exhibited considerable between-individual variation in their migration *** important stopover sites were identified,especially in the Bohai Rim Region and on the Songnen Plain,and we further explored the current conservation status at these two important ***,our results contribute to the understanding of the annual migration,dispersal and protection status of the endangered Oriental Stork and provide a scientific bas

关键词： Autumn migration GPS tracking Oriental stork Repeatability Spring migration Stopover site

Proteomic and phosphoproteomic analysis reveal threonine deficiency increases hepatic lipid deposition in Pekin ducks via reducing STAT phosphorylation

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Animal Nutrition 2023年第2期13卷 249-260页

作者： Yong Jiang Zhong Zhuang Wenqia Jia Zhiguo Wen Ming Xie Hao Bai yulin Bi Zhixiu wang Guobin Chang Shuisheng Hou Guohong Chen College of Animal Science and Technology Yangzhou UniversityYangzhou 225009China State Key Laboratory of Animal Nutrition Key Laboratory of Animal(Poultry)Genetics Breeding and ReproductionMinistry of Agriculture and Rural AffairsInstitute of Animal SciencesChinese Academy of Agricultural SciencesBeijing 100193China Joint International Research Laboratory of Agriculture and Agri-Product Safety the Ministry of Education of ChinaInstitutes of Agricultural Science and Technology DevelopmentYangzhou UniversityYangzhou 225009China Key Laboratory of Feed Biotechnology of Ministry of Agriculture and Rural Affairs Institute of Feed ResearchChinese Academy of Agricultural SciencesBeijing 100081China

Dietary threonine(Thr)deficiency enhances triglyceride(TG)deposition in the liver of Pekin ducks,which injures hepatic function and impairs growth ***,the underlying molecular mechanisms remain *** the present study,we investigated the effects of dietary Thr deficiency on the expressions of proteins and phosphoproteins in liver of Pekin ducks,to identify the underlying molecular changes.A total of 300 one-day-old ducklings were divided into 3 groups with 10 replicates of 10 *** ducks were fed corn-wheat-peanut meal diets containing 0.4.%,0.71%,and 0.96%Thr,respectively,from 1 to 21 days of *** performance,serum parameters,hepatic TG content,and expression of genes involved in lipid metabolism of Pekin ducks were determined.A Thr deficiency group(Thr-D,0.4.%Thr)and a Thr sufficiency group(Thr-S,0.71%Thr)were selected for subsequent proteomic and phosphoproteomic *** results showed that Thr-D reduced the growth performance(P1),and increased the plasma concentrations of cholesterol,high-density lipoprotein cholesterol,low-density lipoprotein cholesterol,and hepatic TG(P176 proteins and 259 phosphosites(containing 198 phosphoproteins)were observed to be differentially expressed as a result of *** upregulated proteins were enriched in the pathway related to amino acid metabolism,*** down-regulated proteins were enriched in linolenic and arachidonic acid metabolism,and the Janus kinase-signal transducer and activator of transcription(JAK-STAT)signaling *** upregulated phos-phoproteins were enriched in the pathways related to fatty acid biosynthesis,fructose and mannose metabolism,and glycolysis/***-D reduced the phosphorylation of STAT1 at S729 and STAT3 at S728,and expression of *** contrast,Thr-D increased non-receptor tyrosine-protein kinase(TYK2)expression and STAT1 phosphoryla

关键词： Threonine deficiency Triglyceride accumulation Proteomic Phosphoproteomic Pekin duck

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科尔沁沙地几种常见植物茎叶吸水特征

中国沙漠 2018年第5期38卷 1017-1023页

作者：车力木格刘新平何玉惠王明明魏水莲李玉霖孙姗姗中国科学院西北生态资源环境研究院奈曼沙漠化研究站甘肃兰州730000 中国科学院大学北京100049 中国科学院西北生态资源环境研究院乌拉特荒漠草原研究站甘肃兰州730000 中国科学院西北生态资源环境研究院皋兰生态与农业综合研究站甘肃兰州730000 北京中天润成环保科技有限公司北京100000

植物通过茎叶吸水能够极大地改善自身水分条件。为研究科尔沁沙地植被茎叶吸收水分变化特征,于2017年7—8月选取科尔沁沙地常见植物差不嘎蒿(Artemisia halodendron)、小叶锦鸡儿(Caragana microphylla)、猪毛菜(Salsola collina),通过... 详细信息

植物通过茎叶吸水能够极大地改善自身水分条件。为研究科尔沁沙地植被茎叶吸收水分变化特征,于2017年7—8月选取科尔沁沙地常见植物差不嘎蒿(Artemisia halodendron)、小叶锦鸡儿(Caragana microphylla)、猪毛菜(Salsola collina),通过自然降雨、茎叶隔雨、根部隔雨的控制试验,运用压力室法测定了降雨前后的植物水势(Ψ)变化。结果表明:(1)根部隔雨试验中,差不嘎蒿、小叶锦鸡儿和猪毛菜降雨后的水势值与降雨前相比分别升高了约66.7%、59.5%和87.9%,在降雨后第2天的水势值与降雨前相比分别升高了约73.2%、86.7%和90.6%。(2)差不嘎蒿和猪毛菜在不同部位隔雨试验中的茎叶水势值差异不明显(P>0.05),小叶锦鸡儿茎叶水势值存在显著差异(P<0.05)。(3)差不嘎蒿、小叶锦鸡儿和猪毛菜都存在茎叶吸水现象。小叶锦鸡儿比差不嘎蒿和猪毛菜更能够适应科尔沁沙地的生存环境。

关键词：叶片吸水茎叶水势科尔沁沙地

Electrochemical behavior of open-cellular structured Ti-6Al-4. alloy fabricated by electron beam melting in simulated physiological fluid:the significance of pore characteristics

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Journal of Materials Science & Technology 2022年第2期97卷 272-282页

作者： Xin Gai Rui Liu Yun Bai Shujun Li Yang Yang Shenru wang Jianguo Zhang Wentao Hou yulin Hao Xing Zhang Rui Yang R.D.K.Misra Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Department of Orthopedic Surgery Peking Union Medical College Hospital(PUMCH)Peking Union Medical College and Chinese Academy of Medical SciencesBeijing 100730China Department of Metallurgical Materialsand Biomedical EngineeringThe University of Texas at El Paso500W.University AvenueEl PasoTX 79968United States

The cellular structured titanium alloys have attracted significant attention for implants because of their lower Young’s modulus,which is comparable to human bone and has the capability of providing space for bone tissue ***,there is a gap in the knowledge in regard to the relationship between the pore characteristics and the electrochemical performance of open-cellular structured titanium *** this study,we elucidate the influence of pore characteristics on the electrochemical performance of open-cellular structured Ti-6Al-4. alloys produced by electron beam melting(EBM).Intriguingly,the passive film formed on cellular structured Ti-6Al-4. alloy with a larger pore size was more stable and protective,and the corrosion performance was superior compared to the samples with a smaller pore size in phosphate buffered saline(PBS),mainly because of relatively smaller exposed surface area and unlimited flow of ***,in acidic PBS containing fluoride ions,the pore characteristics did not play an important role in the corrosion *** was considered that the protective film breaks down such that the corrosion performance of cellular structured alloys was comparable to each other in this harsh environment.

关键词： Cellular structure Ti-6Al-4. Electron beam melting Corrosion resistance Fluoride ion

Soil microbial respiration is regulated by stoichiometric imbalances: Evidence from a humidity gradient case

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Pedosphere 2023年第6期33卷 905-915页

作者： Jiwei LI Jiangbo XIE Jianzhao WU Yongxing CUI Lingbo DONG yulin LIU Xuying HAI Yan LI Zhouping SHANGGUAN Kaibo wang Changhui PENG Lei DENG State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau College of Soil and Water Conservation Science and Engineering(Institute of Soil and Water Conservation)Northwest A&F UniversityYangling 712100China institute of Soil and Water Conservation Chinese Academy of Sciences and Ministry of Water ResourcesYangling 712100China State Key Laboratory of Subtropical Silviculture Zhejiang A&F UniversityLin'an 311300China Sino-French institute for Earth System Science College of Urban and Environmental SciencesPeking UniversityBeijing 100871China University of chinese academy of sciences Beijing 100049China State Key Laboratory of Loess and Quaternary Geology Institute of Earth EnvironmentChinese Academy of SciencesXi'an 710061China Center of CEF/ESCER Department of Biological ScienceUniversity of Quebec at MontrealMontreal H3C 3P8Canada

Humidity not only affects soil microbial respiration(SMR) directly, but, indirectly by regulating the availability of soil water and nutrients. However,the patterns of direct and indirect effects of humidity on SMR over large precipitation gradients remain unclear, limiting our understanding of the effects of precipitation changes on soil C cycle. Here, we investigated the relationships among humidity, soil nutrients, and SMR by identifying stoichiometric imbalances, microbial elemental homeostasis, and microbial C use efficiency along a precipitation gradient at a continental scale. The relationship between SMR and humidity index(HI) corresponded to a Richard’s curve with an inflection point threshold value of approximately 0.7. Soil microbial respiration increased with increasing humidity in drier areas(HI 0.7). Soil microbial communities regulated their enzyme production to maintain a strong stoichiometric homeostasis in drier areas;enzyme production, microbial biomass, and threshold elemental ratios were non-homeostatic under P limitation in wetter areas, which further contributed to the increase in SMR. Our results identified a moisture constraint on SMR in drier areas and highlighted the importance of nutrient(especially for P) limitations induced by humidity in regulating SMR in wetter areas. Understanding the modulation of SMR via soil enzyme activity may improve the prediction of soil C budget under future global climate change.

关键词： carbon use efficiency ecological stoichiometry microorganisms nutrient limitations precipitation soil enzyme activities stoichiometric homeostasis

Burning magnesium in carbon dioxide for highly effective phosphate removal

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Carbon Energy 2021年第2期3卷 330-337页

作者： Ying Yao Lei Yu Meiling wang Alvin Dai Yan Zhang Qiubo Guo yulin Lin JianguoWen Feng Wu Xiulei Ji Jun Lu School of Materials Science and Engineering Beijing Key Laboratory of Environmental Science and EngineeringBeijing Institute of TechnologyBeijingChina Center for Nanoscale Materials Argonne National LaboratoryLemontIllinois Chemical sciences and Engineering Division Argonne National LaboratoryLemontIllinois Department of Chemistry Oregon State UniversityCorvallisOregon

Magnesium oxide was found to have high-phosphate-affinity as an effective component to enhance the phosphate removal ability of common adsorbent ***,the currently prepared MgO-based hybrid adsorbents by conventional methods still suffer from the limited low loading of MgO and inferior removal performances,much far away from practical *** this study,an ingenious carbon coated MgO nanocomposite is designed by directly burning magnesium in CO_(2),a well-known textbook reaction.X-ray diffraction analysis,scanning electron microscope and aberration-corrected high-resolution transmission electron microscope demonstrate the sample is well ***,the high content of nanosized MgO combined with defect-rich carbon layer brings unprecedented phosphate removal capacity of 1135.0 mg/g,removal rate of 99% and benign compatibility with coexisting anions and solution ***,the removal mechanism is also investigated in detail by characterizing the sample before and after adsorption.

关键词： carbon dioxide carbon layer magnesium oxide nanocomposite phosphorus removal

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合成气有效分率对费托合成反应影响中试研究

神华科技 2011年第6期9卷 67-70页

作者：王洪学石玉林谢晶程时富李导中国神华煤制油化工有限公司上海研究院上海201108 北京低碳清洁能源研究所北京100086

模拟以氮气为煤粉输送介质的壳牌煤粉气化技术生产的合成气,利用神华自主知识产权低温浆态床费托合成工业沉淀铁系催化剂SFT4.8,在CEU中试装置上实施了合成气有效分率对催化剂SFT4.8费托合成性能影响试验,结果表明:合成气有效气体分率... 详细信息

模拟以氮气为煤粉输送介质的壳牌煤粉气化技术生产的合成气,利用神华自主知识产权低温浆态床费托合成工业沉淀铁系催化剂SFT4.8,在CEU中试装置上实施了合成气有效分率对催化剂SFT4.8费托合成性能影响试验,结果表明:合成气有效气体分率高、费托反应CO和H2转化率(无论是单程还是总转化率)高、时空产率高、烯/烷质量比高,而CO2和CH4.择性相对较低。

关键词：费托合成有效分率中试研究浆态床催化剂性能