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Impact of Sky Conditions on Net Ecosystem Productivity over a “Floating Blanket” Wetland in Southwest China

Advances in Atmospheric Sciences 2024年第2期41卷 355-368页

作者： Yamei SHAO Huizhi LIU Qun DU Yang LIU Jihua sun Yaohui LI Jinlian LI State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China University of Chinese Academy of Sciences Beijing 100029China Yunnan Meteorological Observatory Kunming 530100China College of Aviation Meteorology Civil Aviation Flight University of ChinaGuanghan 618307China Meteorological Bureau of Tengchong County Baoshan 679100China

Based on eddy covariance(EC) measurements during 2016–20, the effects of sky conditions on the net ecosystem productivity(NEP) over a subtropical “floating blanket ” wetland were investigated. Sky conditions were divided into overcast, cloudy, and sunny conditions. On the half-hourly timescale, the daytime NEP responded more rapidly to the changes in the total photosynthetic active radiation(par.) under overcast and cloudy skies than that under sunny skies. The increase in the appar.nt quantum yield under overcast and cloudy conditions was the greatest in spring and the least in summer. Additionally, lower atmospheric vapor pressure deficit(VPD) and moderate air temperature were more conducive to enhancing the appar.nt quantum yield under cloudy skies. On the daily timescale, NEP and the gross primary production(GPP) were higher under cloudy or sunny conditions than those under overcast conditions across seasons. The daily NEP and GPP during the wet season peaked under cloudy skies. The daily ecosystem light use efficiency(LUE) and water use efficiency(WUE) during the wet season also changed with sky conditions and reached their maximum under overcast and cloudy skies, respectively. The diffuse photosynthetic active radiation(par.d) and air temperature were primarily responsible for the variation of daily NEP from half-hourly to monthly timescales, and the direct photosynthetic active radiation(par.b) had a secondary effect on NEP. Under sunny conditions, par.b and air temperature were the dominant factors controlling daily NEP. While daily NEP was mainly controlled by par.d under cloudy and overcast conditions.

关键词： diffuse radiation eddy covariance NEP controlling factors wetland path analysis

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Bismuth-free Mg_(3)Sb_(2) with enhanced room-temperature thermoelectric and mechanical properties

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Journal of Materiomics 2024年第5期10卷 1101-1108页

作者： Jie Song Peng Luo Hailong sun Hezhang Li Chao Wang Yi Niu Jing Jiang Clean Energy Materials and Engineering Center State Key Laboratory of Electronic Thin Films and Integrated DevicesSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu611731China The State Key Laboratory of Precision Measurement Technology and Instruments Department of Precision InstrumentTsinghua UniversityBeijing100084China

Thermoelectric materials are competitive candidates for special cooling ***_(3)Sb_(2)-based materials consisting of inexpensive ingredients have profound thermoelectric *** present,alloying with Mg_(3)Bi_(2) is the most effective approach to optimize the thermoelectric properties of Mg_(3)Sb_(2)-based ***,the extremely low abundance of bismuth in the crust contradicts its economic *** this work,the ZrO_(2) micro-par.icles were separ.ted into the Mg_(3.2)Sb_(1.99)Te_(0.01).The doping effect of Zr atoms at Mg sites increased the electrical conductivity,and the combined secondary phase lowered the lattice thermal *** acceptable degradation in the Seebeck coefficient,the sample combined with 5%(in mass)ZrO_(2) exhibited a dimensionless figure of merit(zT)of 0.49 and a power factor of 2.7 mW·m^(−1)·K^(−2) near room *** average zT in the range from 300 K to 500 K reached 0.8,on par.with the Mg_(3)Sb_(2) single bond Mg_(3)Bi_(2) ***,the compressive and bending strengths reach 669 MPa and 269 MPa,respectively,far superior to the common room-temperature *** secondary phase showed a surprising and uncostly promotion of the Mg_(3)Sb_(2)-based thermoelectric materials,impelling the realization of its commercial application.

关键词： Mg_(3)Sb_(2)-Mg_(3)Bi_(2)alloy Secondary phase Room-temperature thermoelectric properties Mechanical properties Inexpensive ingredients

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Key geological factors governing sweet spots in the Wufeng-Longmaxi shales of the Sichuan Basin,China

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Energy Geoscience 2024年第3期5卷 163-174页

作者： Zongquan Hu Zengqin Liu Wei Du Zhenrui Bai Ruyue Wang Chuanxiang sun Dongjun Feng State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development SINOPECBeijing102206China Key Laboratory of Shale Oil/Gas Exploration and Production Technology SINOPECBeijing102206China Petroleum Exploration and Production Research Institute SINOPECBeijing102206China

Production performance of the Wufeng-Longmaxi shales varies significantly among Fuling,Weirong,and Wulong fields in the Sichuan *** organic carbon(TOC)content,mineralogy,and organic matter(OM)pore characteristics are investigated to identify key factors governing sweet *** shales with good preservation conditions in the Fuling Field exhibit large thickness,high TOC content and thin-section porosity(TSP),and well-developed OM macropores,thus high initial production and estimated ultimate recovery(EUR).Thin carbonate-containing siliceous shales with good preservation conditions in the Weirong Field feature medium-to-high TOC and well-developed OM macropores but low TSP,leading to high initial production but low *** shales with poor preservation conditions in the Wulong Field are characterized by large thickness,high TOC,low TSP and poorly-developed OM macropores,causing low initial production and *** sedimentary and preservation conditions are intrinsic decisive factors of sweet spots,as they control the mineral composition,TOC,and OM macropore ***-water shales in transgressive systems tracts(TSTs)exhibit better-developed OM macropores and greater TOC compar.d to highstand systems tracts(HSTs).OM macropores are most prevalent in siliceous shales,followed by carbonate-containing siliceous shales and then argillaceous ***,good preservation conditions are conducive to retain OM macropores with low pore aspect ratio(par..Compar.son among the three fields shows that high-TOC silicious shales with good preservation conditions are the highest in TSP and ***,organic richness,lithofacies,and preservation conditions are the major factors which determine OM pore development,governing the sweet spots of the Wufeng-Longmaxi shales.

关键词： Shale gas Organic matter pores Sweet spot Wufeng-Longmaxi shales Sichuan basin

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Multi-step in situ interface modification method for emission enhancement in semipolar deep-ultraviolet light emitting diodes

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Photonics Research 2022年第12期10卷 2778-2785页

作者： LI CHEN JIE sun WEI GUO JASON hoo WEI LIN HANGYANG CHEN HOUQIANG XU LONG YAN SHIPING GUO JUNYONG KANG JICHUN YE Zhejiang Engineering Research Center for Energy Optoelectronic Materials and Devices Ningbo Institute of Materials Technology and EngineeringChinese Academy of SciencesNingbo315201China Yongjiang Laboratory Ningbo315201China Advanced Micro-Fabrication Equipment Inc. Shanghai 201201China Depar.ment of Physics Xiamen UniversityXiamen361005China University of Chinese Academy of Sciences Bejing100049China

SemipolarⅢ-nitrides have attracted increasing attention in applications of optoelectronic devices due to the much reduced polarization field.A high-quality semipolar AlN template is the building block of semipolar AlGaN-based deep-ultraviolet light emitting diodes(DUV LEDs),and thus deserves special *** this work,a multi-step in situ interface modification technique is developed for the first time,to our knowledge,to achieve high-quality semipolar AlN *** stacking faults were efficiently blocked due to the modification of atomic configurations at the related *** regrown AlGaN layers were obtained on the in situ treated AlN template,and stacking faults were eliminated in the post-grown AlGaN *** strains between AlGaN layers were relaxed through a dislocation glide in the basal plane and misfit dislocations at the *** contrast,high-temperature ex situ annealing shows great improvement in defect annihilation,yet suffers from severe lattice distortion with strong compressive strain in the AlN template,which is unfavorable to the post-grown AlGaN *** strong enhancement of luminous intensity is achieved in in situ treated AlGaN DUV *** in situ interface modification technique proposed in this work is proven to be an efficient method for the prepar.tion of high-quality semipolar Al N,showing great potential towards the realization of high-efficiency optoelectronic devices.

关键词： diodes polarization interface

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Antiproliferative Effects of Zinc-Citrate Compound on Hormone Refractory Prostate Cancer

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Chinese Journal of Cancer Research 2012年第2期24卷 124-129页

作者： hoo Hong Yong sun Choi Hyuk Jin Cho Ji Youl Lee Joon Chul Kim Tae Kon Hwang Sae Woong Kim Depar.ment of Urology College of Medicine the Catholic University of Korea

Objective： To investigate the antiproliferative effects of zinc-citrate compound on hormone refractory prostate cancer （HRPC）. Methods： HRPC cell line （DU145） and normal prostate cell line （RWPE-1） were treated with zinc, citrate and zinc-citrate compound at different time intervals and concentrations to investigate the effect of zinc-citrate compound. Mitochondrial （m）-aconitase activity was determined using aconitase assay. DNA laddering analysis was performed to investigate apoptosis of DU145 cells. Molecular mechanism of apoptosis was investigated by Western blot analysis of P53, P21w^fl, Bcl-2, Bcl-xL and Bax, and also caspase-3 activity analysis. Results： Treatment with zinc-citrate compound resulted in a time- and dose-dependent decrease in cell number of DU145 cells in compar.son with RWPE-1. M-aconitase activity was significantly decreased. DNA laddering analysis indicated apoptosis of DU145 cells. Zinc-citrate compound increased the expression of P21wall and P53, and reduced the expression of Bcl-2 and Bcl-xL proteins but induced the expression of Bax protein. Zinc-citrate compound induced apoptosis of DU145 cells by activation of the caspase-3 pathway. Conclusion： Zinc-citrate compound can induce apoptotic cell death in DU145, by caspase-3 activation through up-regulation of apoptotic proteins and down-regulation of antiapoptotic proteins.

关键词： Prostatic neoplasm Zinc Apoptosis

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Assessment of par.icipant satisfaction with upper gastrointestinal endoscopy in South Korea

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World Journal of Gastroenterology 2011年第36期17卷 4124-4129页

作者： hoo-Yeon Lee sun Mi Lim Mi Ah Han Jae Kwan Jun Kui Son Choi Myung-Il Hahm Eun-Cheol par. Depar.ment of Social Medicine College of MedicineDankook University201Manghyang-roDongnamguCheonan-siChungcheongnam-do 330-714South Korea National Cancer Control Institute National Cancer CenterGyeonggi-do 410-769South Korea Mi Ah HanDepartment of Preventive MedicineCollege of MedicineChosun UniversitySeoseok-dongDong-guGwangju 501-759South Korea Depar.ment of Preventive Medicine College of MedicineChosun UniversitySeoseok-dongDong-guGwangju 501-759South Korea National Cancer Control Institute National Cancer CenterGyeonggi-do 410-769South Korea Depar.ment of Health Administration and Management College of Medical ScienceSoonchunhyang UniversityShinchang-myunAsan-siChungcheongnam-do 336-745South Korea Depar.ment of Preventive Medicine and Institute of Health Services Research College of MedicineYonsei UniversitySeoul 120-752South Korea

AIM:To measure the perceived satisfaction with gastric cancer screening as par. of the National Cancer Screening Program (NCSP) in South ***:Data were derived from the par.icipantsin a satisfaction survey of the Quality Evaluation of National Cancer Screening in *** is a populationbased nationwide telephone survey of par.icipants who were screened by the NCSP between May and October *** study included 4412 par.icipants who provided full sets of data and who had upper endoscopies for the purpose of gastric cancer ***:The negative appraisal percentages for each of the seven questions were as follows:explanation in prepar.tion for the upper endoscopy,12.3%;explanation about the process and procedure of the upper endoscopy,13.8%;explanation about any pain or discomfort related to the upper endoscopy,27.5%;level of pain during the procedure,30.3%;physical environment,16.2%;manner of the staff,11.2%,and privacy protection,8.8%.CONCLUSION:The critical issues identified by the par.to analysis include the adequacy of the explanation about any pain or discomfort associated with the upper endoscopy and the level of pain experienced during the procedure.

关键词： Gastric cancer Cancer screening Upper endoscopy Satisfaction

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Bacterial diacetyl suppresses abiotic stress-induced senescence in Arabidopsis

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Journal of Integrative Plant Biology 2022年第6期64卷 1135-1139页

作者： sunil K.Singh Yazhou sun Yu Yang Ziwei Zuo Xiaoxuan Wu Chuyang Shao Li Peng Paul W.par. Huiming Zhang Shanghai Center for Plant Stress Biology Center for Excellence in Molecular Plant Sciencesthe Chinese Academy of SciencesShanghai 201602China University of Chinese Academy of Sciences Beijing 100049China Depar.ment of Chemistry and Biochemistry Texas Tech UniversityLubbock 79409TexasUSA

Premature plant senescence induced by abiotic stresses is a major cause of agricultural losses worldwide. Tools for suppressing stress-induced plant senescence are limited. Here, we report that diacetyl, a natural compound emitted by the plantbeneficial bacterium Bacillus amyloliquefaciens,suppresses abscisic acid-mediated foliar senescence in Arabidopsis thaliana under various abiotic stress conditions. Our results establish diacetyl as an effective protector against stressinduced plant senescence and reveal a molecular mechanism for bacteria-enhanced plant stress resistance.

关键词： ABA diacetyl microbial volatile leaf senescence

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行动者网络视角下中小企业参与产教融合的推进路径

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中国职业技术教育 2024年第13期 20-26页

作者：孙婧申玲三江学院土木工程学院

有效推进面广量大的中小企业积极参与产教融合行动,是深化产教融合的必然要求。针对现有中小企业参与产教融合目标决策与动力机制缺失、模式渠道匮乏、资源利用效率低下、信息沟通交流不畅、运行管理不规范、评价体系不健全等问题,提出... 详细信息

有效推进面广量大的中小企业积极参与产教融合行动,是深化产教融合的必然要求。针对现有中小企业参与产教融合目标决策与动力机制缺失、模式渠道匮乏、资源利用效率低下、信息沟通交流不畅、运行管理不规范、评价体系不健全等问题,提出基于中小企业参与下行动者网络的转译过程,系统构建共立目标协商机制、共建多元动力机制、共创组织平台载体、共商资源协同机制、共设信息协同机制、共定制度协同机制、共构发展评价体系的推进路径,为异质行动者协同推进中小企业参与产教融合行动提供参考。

关键词：产教融合中小企业行动者网络

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Anti-inflammatory and Antimicrobial Effects of Anthocyanin Extracted from Black Soybean on Chronic Bacterial Prostatitis Rat Model

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Chinese Journal of Integrative Medicine 2018年第8期24卷 621-626页

作者： Byung Il Yoon Woong Jin Bae Yong sun Choi Su Jin Kim U Syn Ha sung-hoo Hong Dong Wan Sohn Sae Woong Kim Depar.ment of Urology International St Mary's HospitalThe Catholic Kwandong University of Korea Depar.ment of Urology College of MedicineThe Catholic University of Korea

Objective： To investigated the anti-inflammatory and antimicrobial effects of anthocyanins extracted from black soybean on the chronic bacterial prostatitis（CBP） rat ***： The SpragueDawley rats were divided into 4 groups,including control,ciprofloxacin,anthocyanins and anthocyanins with ciprofloxacin groups（n=8 in each group）.Then,drip infusion of bacterial suspension（Escherichia coli Z17O2：K1：H^-） into Sprague-Dawley rats was conducted to induce *** 4 weeks,results of prostate tissue,urine culture,and histological analysis on the prostate were analyzed for each ***： The use of ciprofloxacin,anthocyanins,and anthocyanins with ciprofloxacin showed statistically significant decreases in bacterial growth and improvements in the reduction of prostatic inflammation compar.d with the control group（P〈0.05）.The anthocyanins with ciprofloxacin group showed a statistically significant decrease in bacterial growth and improvement in prostatic inflammation compar.d with the ciprofloxacin group（P〈0.05）.Conclusions： These results suggest that anthocyanins may have anti-inflammatory and antimicrobial effects,as well as a synergistic effect with ***,we suggest that the combination of anthocyanins and ciprofloxacin may be effective in treating CBP to obtain a higher rate of treatment success.

关键词： prostatitis anti-bacterial agents anthocyanins

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高光谱影像三分支分组空谱注意力深度分类网络

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遥感学报 2024年第1期28卷 247-265页

作者：苏涵陈娜彭江涛孙伟伟湖北大学数学与统计学学院应用数学湖北省重点实验室武汉430062 宁波大学地理与空间信息技术系宁波315211 宁波大学遥感遥测产业技术研究院宁波拾烨智能科技有限公司宁波315211

高光谱影像具有丰富的空间和光谱信息,充分提取和利用这两个维度的信息是高光谱分类算法重点关注的问题。目前深度特征提取网络通常利用单分支串行网络连续提取空谱特征或双分支并行网络分别提取空谱特征。由于空间和光谱维内在差异,单... 详细信息

高光谱影像具有丰富的空间和光谱信息,充分提取和利用这两个维度的信息是高光谱分类算法重点关注的问题。目前深度特征提取网络通常利用单分支串行网络连续提取空谱特征或双分支并行网络分别提取空谱特征。由于空间和光谱维内在差异,单分支串行网络连续提取的两类特征之间会互相干扰。并行双分支网络虽然可以减少两类特征之间的干扰,但同时会忽略空间和光谱特征间的潜在相关性。为解决上述问题,本文提出了一种三分支分组空谱注意力深度网络结构。该网络具有3个分支,分别用于提取空间、光谱和空谱联合特征。针对3个分支的不同特性,设计了不同的注意力机制以加强特征的判别性。该网络既可以提取独立的空间和光谱特征,又保留了空间和光谱之间的相关性。在5个数据集上的实验表明,本文所提出的方法要优于现有的一些先进算法。

关键词：高光谱影像分类注意力机制三分支结构深度网络

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