检索结果-南通市图书馆

Journal of Earth Science 2024年第4期35卷 1367-1372页

作者： Shao-Yong jiang Hailin Xie Wenqi Ren Bin Wang Feng Yuan Xiufeng Liu Hui-Min su State Key Laboratory of Geological Processes and Mineral Resources Collaborative Innovation Center for Exploration of Strategic Mineral ResourcesSchool of Earth ResourcesChina University of GeosciencesWuhan 430074China Qinghai Engineering Research Center of Deep Exploration Technology for Large and Ultra-Large Gold Deposits around Qaidam Basin First Geological Exploration Institute of Qinghai ProvinceHaidong 810600China

0 INTRODUCTION Chromium(Cr)is one of the most important strategic critical metals in *** primary chromite deposits can be divided into two types according to their geological setting and occurrences:podiform chromite and stratiform/layered chromite(Stowe,1994;Paktunc,1990).Podiform chromites mainly occur in ophiolites or mantle peridotites(Yang et al.,2022,2010;Bao et al.,1999).

关键词： China mantle setting

Metabolic profiles and morphological characteristics of leaf tips among different sweet potato(Ipomoea batatas Lam.)varieties

在线全文

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第2期23卷 494-510页

作者： Wenqing Tan Xinbo Guo Zhangying Wang rong Zhang Chaochen Tang Bingzhi jiang Ruixue Jia Yuanyuan Deng Shaohai Yang Jingyi Chen Crops Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Crop Genetic Improvement of Guangdong ProvinceGuangzhou 510640China School of Food Science and Engineering South China University of TechnologyGuangzhou 510640China Sericultural&Agri-Food Research Institute Guangdong Academy of Agricultural Sciences/Key Laboratory of Functional FoodsMinistry of Agriculture and Rural Affairs/Guangdong Key Laboratory of Agricultural Products ProcessingGuangzhou 510610China

Sweet potato leaf tips have high nutritional value,and exploring the differences in the metabolic profiles of leaf tips among different sweet potato varieties can provide information to improve their *** this study,a UPLC-Q-Exactive Orbitrap/MS-based untargeted metabolomics method was used to evaluate the metabolites in leaf tips of 32 sweet potato *** varieties with distinct overall metabolic profiles(A01,A02,and A03),two varieties with distinct profiles of phenolic acids(A20 and A18),and three varieties with distinct profiles of flavonoids(A05,A12,and A16)were *** addition,a total of 163 and 29 differentially expressed metabolites correlated with the color and leaf shape of sweet potato leaf tips,respectively,were identified through morphological *** comparison analysis of the phenotypic traits and a metabolite-phenotypic trait correlation analysis indicated that the color differences of sweet potato leaf tips were markedly associated with ***,the level of polyphenols was correlated with the leaf shape of sweet potato leaf tips,with lobed leaf types having higher levels of polyphenols than the entire leaf *** findings on the metabolic profiles and differentially expressed metabolites associated with the morphology of sweet potato leaf tips can provide useful information for breeding sweet potato varieties with higher nutritional value.

关键词： sweet potato leaf tips phenotypic traits metabolic profile differentially expressed metabolites polyphenols

Hadoop框架下的情报分析大数据调度超时预测方法

在线全文

学校读者我要写书评

暂无评论

计算机科学 2014年第S1期41卷 409-413页

作者：蒋苏蓉蓝江桥杨玉海空军预警学院武汉430019

"大数据"是信息科技领域出现的一个研究热点。军用情报数据具备典型的"大数据"特征。Hadoop是一个基于java的分布式密集数据处理和数据分析的软件框架。为了使情报大数据存取满足实时性要求,从军事应用需求出发,对Hadoop框架下的情报分... 详细信息

"大数据"是信息科技领域出现的一个研究热点。军用情报数据具备典型的"大数据"特征。Hadoop是一个基于java的分布式密集数据处理和数据分析的软件框架。为了使情报大数据存取满足实时性要求,从军事应用需求出发,对Hadoop框架下的情报分析大数据存取调度算法超时现象进行分析研究,实现了一种可以进行超时预测的调度算法。

关键词： Hadoop HDFS 调度算法云存储

在线全文

学校读者我要写书评

暂无评论

乙型肝炎不确定期与灰区的再认识

世界华人消化杂志 2024年第1期32卷 8-15页

作者：蒋素文胡爱荣宁波市第二医院传染感染科浙江省宁波市315020

慢性乙型肝炎病毒(hepatitis B virus,HBV)感染的防治依然任重而道远.即使我国新版指南扩大了抗病毒治疗适应证,依然有一定比例的HBV感染者不符合抗病毒治疗适应证,称之为不确定期或灰区(grey zone,GZ).但当前关于不确定期或GZ的解读与... 详细信息

慢性乙型肝炎病毒(hepatitis B virus,HBV)感染的防治依然任重而道远.即使我国新版指南扩大了抗病毒治疗适应证,依然有一定比例的HBV感染者不符合抗病毒治疗适应证,称之为不确定期或灰区(grey zone,GZ).但当前关于不确定期或GZ的解读与判断标准较为混乱,两者之间的联系与区别还不甚清晰,不同研究所指向的对象不尽相同.但无论如何认定不确定期或GZ,其目的是为了及时、准确判断慢性HBV感染的疾病进展与是否需要及时治疗.基于GZ对应于“治疗的适应证分类”和不确定期对应于“自然史分期”的理解,本文结合国内外的研究进展阐述对慢性HBV感染不确定期与GZ的再认识.GZ即为不治疗对象(不符合抗病毒治疗适应证),而不确定期仅为难以明确归于自然史分期(不符合自然史分期)的患者,GZ应包括不确定期,而不是等同关系.对应我国新版指南标准,属于GZ的不确定期患者,建议抗病毒治疗;对应欧洲肝病学会2017年指南标准,免疫控制期与属于GZ的不确定期患者,建议抗病毒治疗.

关键词：乙型肝炎病毒慢性乙型肝炎抗病毒治疗自然史分期治疗适应证不确定期灰区

The DNA damage repair complex MoMMS21-MoSMC5 is required for infection-related development and pathogenicity of Magnaporthe oryzae

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Integrative Agriculture 2024年第6期23卷 1956-1966页

作者： Yue jiang rong Wang Lili Du Xueyu Wang Xi Zhang Pengfei Qi Qianfei Wu Baoyi Peng Zonghua Wang Mo Wang Ya Li State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops Fujian Agriculture and Forestry UniversityFuzhou 350002China State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Yunnan Agricultural UniversityKunming 650201China Fujian Universities Key Laboratory for Plant-Microbe Interaction Fujian Agriculture and Forestry UniversityFuzhou 350002China Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops Minjiang UniversityFuzhou 350108China Fujian Key Laboratory for Monitoring and Integrated Management of Crop Pests Fuzhou 350003China

The conserved DNA damage repair complex,MMS21-SMC5/6(Methyl methane sulfonate 21-Structural maintenance of chromosomes 5/6),has been extensively studied in yeast,animals,and ***,its role in phytopathogenic fungi,particularly in the highly destructive rice blast fungus Magnaporthe oryzae,remains *** this study,we functionally characterized the homologues of this complex,MoMMS21 and MoSMC5,in *** first demonstrated the importance of DNA damage repair in *** by showing that the DNA damage inducer phleomycin inhibited vegetative growth,infection-related development and pathogenicity in this ***,we discovered that MoMMS21 and MoSMC5 interacted in the nuclei,suggesting that they also function as a complex in *** deletion experiments revealed that both MoMMS21 and MoSMC5 are required for infection-related development and pathogenicity in ***,while only MoMMS21 deletion affected growth and sensitivity to phleomycin,indicating its specific involvement in DNA damage ***,our results provide insights into the roles of MoMMS21 and MoSMC5 in ***,highlighting their functions beyond DNA damage repair.

关键词： Magnaporthe oryzae MMS21 SMC5 DNA damage repair pathogenicity

Alzheimer’s disease early diagnostic and staging biomarkers revealed by large-scale cerebrospinal fluid and serum proteomic profiling

在线全文

学校读者我要写书评

暂无评论

The Innovation 2024年第1期5卷 118-126页

作者： Qing-Qing Tao Xue Cai Yan-Yan Xue Weigang Ge Liang Yue Xiao-Yan Li rong-rong Lin Guo-Ping Peng Wenhao jiang Sainan Li Kun-Mu Zheng Bin jiang Jian-Ping Jia Tiannan Guo Zhi-Ying Wu Department of Neurology and Research Center of Neurology in the Second Affiliated Hospital and Key Laboratory of Medical Neurobiology of Zhejiang Province Zhejiang University School of MedicineHangzhou 310009China Liangzhu Laboratory Zhejiang UniversityHangzhou 311100China Westlake Laboratory of Life Sciences and Biomedicine Key Laboratory of Structural Biology of Zhejiang ProvinceSchool of Life SciencesWestlake UniversityHangzhou 310024China Institute of Basic Medical Sciences Westlake Institute for Advanced StudyHangzho 310024China Department of Neurology First Affiliated HospitalZhejiang University School of MedicineHangzhou 310009China Department of Neurology First Affiliated HospitalSchool of MedicineXiamen UniversityXiamen 361009China Innovation Center for Neurological Disorders and Department of Neurology Xuanwu HospitalCapital Medical UniversityNational Clinical Research Center for Geriatric DiseasesBeijing 100053China MOE Frontier Science Center for Brain Science and Brain-machine Integration School of Brain Science and Brain MedicineZhejiang UniversityHangzhou 310058China CAS Center for Excellence in Brain Science and Intelligence Technology Shanghai 200031China

Amyloid-b,tau pathology,and biomarkers of neurodegeneration make up the core diagnostic biomarkers of Alzheimer disease(AD).However,these proteins represent only a fraction of the complex biological processes underlying AD,and individuals with other brain diseases in which AD pathology is a comorbidity also test positive for these diagnostic *** ADspecific early diagnostic and disease staging biomarkers are *** this study,we performed tandem mass tag proteomic analysis of paired cerebrospinal fluid(CSF)and serum samples in a discovery cohort comprising 98 *** biomarkers were validated by parallel reaction monitoring–based targeted proteomic assays in an independent multicenter cohort comprising 288 *** quantified 3,238 CSF and 1,702 serum proteins in the discovery cohort,identifying 171 and 860 CSF proteins and 37 and 323 serum proteins as potential early diagnostic and staging biomarkers,*** the validation cohort,58 and 21 CSF proteins,as well as 12 and 18 serum proteins,were verified as early diagnostic and staging biomarkers,*** 19-protein CSF and an 8-protein serum biomarker panels were built by machine learning to accurately classify mild cognitive impairment(MCI)due to AD from normal cognition with areas under the curve of 0.984 and 0.881,*** 19-protein CSF biomarker panel also effectively discriminated patients with MCI due to AD from patients with other neurodegenerative ***,we identified 21 CSF and 18 serum stage-associated proteins re-flecting AD *** findings provide a foundation for developing bloodbased tests for AD screening and staging in clinical practice.

关键词： cerebrospinal Alzheimer fluid

Visible-light photoredox-catalyzed carboxylation of aryl epoxides with CO_(2)

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第7期35卷 281-284页

作者： Tian-Yu Gao Xiao-Yan Mo Shu-rong Zhang Yuan-Xu jiang Shu-Ping Luo Jian-Heng Ye Da-Gang Yu Key Laboratory of Green Chemistry&Technology of Ministry of Education College of ChemistrySichuan UniversityChengdu 610064China State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology Zhejiang University of TechnologyHangzhou 310014China State Key Laboratory of Elemento-Organic Chemistry Nankai UniversityTianjin 300071China

Herein, we report the first visible-light photoredox-catalyzed carboxylation of aryl epoxides with CO_(2)to synthesize hydroxy acid derivatives. A variety of valuable β-, γ-, δ-, ε–hydroxy acid derivatives are obtained in moderate to high yields under mild conditions. This protocol shows noteworthy functionalgroup compatibility, high chemo-and regioselectivities under transition-metal-free conditions with an inexpensive organo-dye as photosensitizer. Mechanistic studies indicate that the benzylic carbanion is generated as an intermediate via the sequential single electron transfer(SSET) process.

关键词： Carbon dioxide Epoxides Visible-light photoredox catalysis Hydroxy acid Sequential single electron transfer

Genetic and lipidomic analyses reveal the key role of lipid metabolism for cold tolerance in maize

在线全文

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2024年第3期51卷 326-337页

作者： Lei Gao Haifang jiang Minze Li Danfeng Wang Hongtao Xiang rong Zeng Limei Chen Xiaoyan Zhang Jianru Zuo Shuhua Yang Yiting Shi State Key Laboratory of Plant Environmental Resilience College of Biological SciencesFrontiers Science Center for Molecular Design BreedingCenter for Crop Functional Genomics and Molecular BreedingChina Agricultural UniversityBeijing 100193China State Key Laboratory of Wheat&Maize Crop Science College of Life SciencesHenan Agricultural UniversityZhengzhouHenan 450002China State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China suihua Branch of Heilongjiang Academy of Agricultural Machinery Sciences SuihuaHeilongjiang 152052China

Lipid remodeling is crucial for cold tolerance in ***,the precise alternations of lipidomics during cold responses remain elusive,especially in maize(Zea mays L.).In addition,the key genes responsible for cold tolerance in maize lipid metabolism have not been ***,we integrate lipidomic,transcriptomic,and genetic analysis to determine the profile of lipid remodeling caused by cold *** find that the homeostasis of cellular lipid metabolism is essential for maintaining cold tolerance of ***,we detect 210 lipid species belonging to 13 major classes,covering phospholipids,glycerides,glycolipids,and free fatty *** lipid metabolites undergo specific and selective alterations in response to cold stress,especially mono-/di-unsaturated lysophosphatidic acid,lysophosphatidylcholine,phosphatidylcholine,and phosphatidylinositol,as well as polyunsaturated phosphatidic acid,monogalactosyldiacylglycerol,diacylglycerol,and *** addition,we identify a subset of key enzymes,including ketoacyl-acyl-carrier protein synthase II(KAS II),acyl-carrier protein 2(ACP2),male sterility33(Ms33),and stearoyl-acyl-carrier protein desaturase 2(SAD2)involved in glycerolipid biosynthetic pathways are positive regulators of maize cold *** results reveal a comprehensive lipidomic profile during the cold response of maize and provide genetic resources for enhancing cold tolerance in crops.

关键词： Maize Cold stress Lipid metabolism Transcriptome Lipidomic

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

浅谈留守儿童非智力因素的培养

南昌教育学院学报 2017年第4期32卷 97-99页

作者：蒋苏蓉青海师范大学青海西宁810000

大量研究表明非智力因素对儿童的学业成就、生活习惯、人格发展等方面产生重要影响。但对于留守儿童这一特殊群体,非智力因素的发展与培养并未引起广泛重视。

关键词：留守儿童非智力因素培养措施

Upcycling of Poly(butylene adipate-co-terephthalate) into Dual Covalent Adaptable Networks through Chain Breaking-Crosslinking Strategy

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2024年第10期42卷 1505-1513页

作者： Bin-Bo Wang rong Huang Xin Wang Tao jiang Yi Wang Shuai Du Fa-Lin Li Jin Zhu Song-Qi Ma Key Laboratory of Synthetic and Biological Colloids Ministry of EducationSchool of Chemical and Material EngineeringJiangnan University Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province Divisions of Polymers and CompositesNingbo Institute of Materials Technology and EngineeringChinese Academy of Sciences University of Chinese Academy of Sciences

Poly(butylene adipate-co-terephthalate)(PBAT), a widely studied biodegradable material, has not effectively addressed the problem of plastic waste. Taking into consideration the cost-effectiveness, upcycling PBAT should take precedence over direct composting degradation. The present work adopts a chain breaking-crosslinking strategy, upcycling PBAT into dual covalent adaptable networks(CANs). During the chainbreaking stage, the ammonolysis between PBAT and polyethyleneimine(PEI) established the primary crosslinked network. subsequently, styrene maleic anhydride copolymer(SMA) reacted with the hydroxyl group, culminating in the formation of dual covalent adaptable networks. In contrast to PBAT, the PBAT-dual-CANs exhibited a notable Young's modulus of 239 MPa, alongside an inherent resistance to creep and solvents. Owing to catalysis from neighboring carboxyl group and excess hydroxyl groups, the PBAT-dual-CANs exhibited fast stress relaxation. Additionally,they could be recycled through extrusion and hot-press reprocessing, while retaining their biodegradability. This straightforward strategy offers a solution for dealing with plastic waste.

关键词： Chain breaking-crosslinking strategy Dynamic crosslinked networks Poly(butylene adipate-co-terephthalate) Recycle Upcycle