检索结果-南通市图书馆

Magnetic-biased chiral molecules enabling highly oriented photovoltaic perovskites

在线全文

学校读者我要写书评

暂无评论

National Science Review 2024年第2期11卷 221-230页

作者： jing Chen Caner Deger Zhen-Huang Su Kai-Li Wang Guang-Peng Zhu Jun-jie Wu Bing-Chen He chun-Hao Chen Tao Wang Xing-Yu gao Ilhan Yavuz Yan-Hui Lou Zhao-Kui Wang Liang-Sheng Liao Institute of Functional Nano&Soft Materials(FUNSOM) Laboratory of Advanced Negative Carbon TechnologiesSoochow University Department of Physics Marmara University Shanghai Synchrotron Radiation Facility(SSRF) Shanghai Advanced Research InstituteChinese Academy of Sciences College of Energy Soochow Institute for Energy and Materials Innovations Soochow University Macao Institute of Materials Science and Engineering Macau University of Science and Technology

The interaction between sites A, B and X with passivation molecules is restricted when the conventional passivation strategy is applied in perovskite（ABX3） photovoltaics. Fortunately, the revolving A-site presents an opportunity to strengthen this interaction by utilizing an external field. Herein, we propose a novel approach to achieving an ordered magnetic dipole moment, which is regulated by a magnetic field via the coupling effect between the chiral passivation molecule and the A-site（formamidine ion） in *** strategy can increase the molecular interaction energy by approximately four times and ensure a well-ordered molecular arrangement. The quality of the deposited perovskite film is significantly optimized with inhibited nonradiative recombination. It manages to reduce the open-circuit voltage loss of photovoltaic devices to 360 mV and increase the power conversion efficiency to 25.22%. This finding provides a new insight into the exploration of A-sites in perovskites and offers a novel route to improving the device performance of perovskite photovoltaics.

关键词： perovskite photovoltaics magnetic moment A-site regulation chiral molecules

Spleen volume is associated with overt hepatic encephalopathy after transjugular intrahepatic portosystemic shunt in patients with portal hypertension

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Surgery 2024年第7期16卷 2054-2064页

作者： chun-Juan Zhao Chao Ren Zhen Yuan Guo-Hui Bai jin-Yu Li Long gao jin-Hui Li Ze-Qi Duan Dui-Ping Feng Hui Zhang College of Medical Imaging Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Department of Radiology The First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Department of Occupational Health School of Public HealthShanxi Key Laboratory of Environmental Health Impairment and PreventionNHC Key Laboratory of PneumoconiosisMOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Department of Oncological and Vascular Intervention The First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Shanxi Provincial Clinical Research Center for Interventional Medicine The First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina First Clinical Medical College Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Shanxi Key Laboratory of Intelligent Imaging and Nanomedicine The First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Intelligent Imaging Big Data and Functional Nano-imaging Engineering Research Center of Shanxi Province The First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina

BACKGROUND Portal shunt and immune status related to the spleen are related to the occurrence of hepatic encephalopathy(HE).It is unknown whether spleen volume before transjugular intrahepatic portosystemic shunt(TIPS)is related to postoperative *** To investigate the relationship between spleen volume and the occurrence of *** This study included 135 patients with liver cirrhosis who underwent TIPS,and liver and spleen volumes were elevated upon computed tomography *** Kaplan-Meier curve was used to compare the difference in the incidence rate of HE among patients with different spleen *** and multivariate Cox regression analyses were performed to identify the factors affecting overt HE(OHE).Restricted cubic spline was used to examine the shapes of the dose-response association between spleen volumes and OHE *** The results showed that 37(27.2%)of 135 patients experienced OHE during a 1-year follow-up *** with preoperative spleen volume(901.30±471.90 cm3),there was a significant decrease in spleen volume after TIPS(697.60±281.0 cm^(3))in OHE *** the severity of OHE increased,the spleen volume significantly decreased(P<0.05).Compared with patients with a spleen volume≥782.4 cm^(3),those with a spleen volume<782.4 cm^(3) had a higher incidence of HE(P<0.05).Cox regression analysis showed that spleen volume was an independent risk factor for post-TIPS OHE(hazard ratio=0.494,P<0.05).Restricted cubic spline model showed that with an increasing spleen volume,OHE risk showed an initial increase and then decrease(P<0.05).CONCLUSION Spleen volume is related to the occurrence of OHE after *** spleen volume is an independent risk factor for post-TIPS OHE.

关键词： Hepatic encephalopathy Transjugular intrahepatic portosystemic shunt Spleen volume Portal hypertension Cirrhosis

Simultaneous production of high-frequency synthetic apomixis with high fertility and improved agronomic traits in hybrid rice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2024年第1期17卷 4-7页

作者： Mengqiu Song Wumei Wang chun ji Shengnan Li Wei Liu Xiaoyu Hul Anhui Feng Shuang Ruan Shiyun Du Huan Wang Kui Dai Longbiao Guo Qian Qian Hongqi Si Xingming Hu College of Agronomy Anhui Agricultural UniversityHefeiAnhui 230036China State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhouZhejiang 310006China Rice Research Institute Anhui Academy of Agricultural SciencesHefeiAnhui 230031China jiangxi Modern Seed Industry Co.NanchangJiangxi 330026China

Dear Editor,Utilization of heterosis is fundamental to modern agricultural improvement and contributes significantly to food security and agricultural development(Ouyang et al.,2022).However,heterosis of F,hybrids cannot be stably ***,or asexual reproduction through seeds,offers the potential for the fixation of heterosis in F,hybrids and the formation of clonal offspring,which could have considerable implications for plant breeding and agriculture(Schmidt,2020).But naturally occurring apomixis has never been found in major ***,synthetic apomixis has been successfully generated by inducing incomplete meiotic development combined with parthenogenesis development to produce cloned rice(Oryza sativa)seeds(Khanday et al.,2019;Wang et al.,2019;Vernet et al.,2022;Wei et al.,2023).

关键词： sativa fertility breeding

Exploration of pathogenic microorganism within the small intestine of necrotizing enterocolitis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Pediatrics 2024年第2期20卷 165-172页

作者： Yan Wang Kun jiang Qiao Xia Xia Kang Shan Wang ji-Hong Yu Wen-Feng Ni Xiao-Qin Qi Ying-Na Zhang jin-Bao Han Gang Liu Lei Hou Zhi-chun Feng Liu-Ming Huang Clinical Biobank Center Medical Innovation Research Division of ChinesePLA General HospitalBeijingChina Institute of Basic Medical Sciences Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Senior Department of Pediatrics The Seventh Medical Center of PLA General HospitalBeijing 100700China Department of Neurology The First Medical CenterChinese PLA General HospitalBeijing 100853China Department of Emergency Center National Center for Children's HealthBeijing Children's HospitalCapital Medical UniversityBeijing 100045China

Background Necrotizing enterocolitis(NEC)is the most common severe gastrointestinal emergency in *** designed this study to identify the pathogenic microorganisms of NEC in the microbiota of the small intestine of *** Using the 16S ribosomal DNA(rDNA)sequencing method,we compared and analyzed the structure and diversity of microbiotas in the intestinal feces of different groups of neonates:patients undergoing jejunostomy to treat NEC(NP group),neonates undergoing jejunostomy to treat other conditions(NN group),and neonates with NEC undergoing conservative treatment(NC group).We took intestinal feces and saliva samples from patients at different time *** The beta diversities of the NP,NN,and NC groups were all *** comparing the beta diversities between different time points in the NP group,we found similar beta diversities at time points El to E3 but significant differences between the E2-E3 and E4 time points:the abundances of Klebsiella and Enterococcus(Proteobacteria)were higher at the E1-E3 time points;the abundance of Escherichia-Shigella(Proteobacteria)increased at the E2 time point,and the abundance of Klebsiella decreased significantly,whereas that of Streptococcus increased significantly at the E4 time *** Our results suggest that the pathological changes of intestinal necrosis in the small intestine of infants with NEC are not directly caused by excessive proliferation of pathogenic bacteria in the small *** sources of microbiota in the small intestine of neonates,especially in premature infants,may be affected by multiple factors.

关键词： Microbiota Necrotizing enterocolitis-Small intestine 16S rDNA

合作社高质量发展促进农业绿色生产率提高的机理与实效

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国农业资源与区划 2024年第5期45卷 44-52页

作者：高静周吉西南大学经济管理学院重庆400715

[目的]合作社的高质量发展给农业绿色发展提供了重要支撑,基于农业绿色生产率的增长源泉,探究合作社影响农业绿色生产率的作用机理与实效。[方法]文章从“规范化水平、服务功能、示范带动效应”三方面建构合作社高质量发展的指标体系,利... 详细信息

[目的]合作社的高质量发展给农业绿色发展提供了重要支撑,基于农业绿色生产率的增长源泉,探究合作社影响农业绿色生产率的作用机理与实效。[方法]文章从“规范化水平、服务功能、示范带动效应”三方面建构合作社高质量发展的指标体系,利用2010—2020年我国30个省(市、区,不含港澳台和西藏地区)的面板数据,建立系统GMM模型实证检验合作社如何促进农业绿色发展。[结果](1)在作用效果上,合作社高质量发展通过农业绿色技术进步和绿色技术效率提升双轮驱动农业绿色生产率提高,边际弹性为0.179,且随时间推进,“十三五”时期增至0.309;(2)从作用机理看,合作社规范化水平主要通过推动农业绿色技术进步提高农业绿色生产率,示范带动效应通过农业绿色技术效率提升和农业绿色技术进步来提高农业绿色生产率,服务功能则无明显影响。[结论]要推动农业绿色发展转型,各地应积极支持合作社发展,拓展合作社的绿色生产服务功能,并进一步出台绿色技术规范,对符合规范的合作社给予绿色补贴支持;同时,借助农产品消费市场的力量,完善农产品溢价识别机制,激励合作社用绿增效。

关键词：合作社高质量发展农业绿色生产率农业绿色发展 SBM-GML指数农业绿色技术

维普期刊数据库博看期刊

Non-Gaussian quantum states generated via quantum catalysis and their statistical properties

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第4期33卷 332-337页

作者：张晓燕杨春燕王继锁孟祥国 Shandong Provincial Key Laboratory of Laser Polarization and Information Technology School of Physics and Physical EngineeringQufu Normal UniversityQufu 273165China Shandong National Secondary Vocational School Qingzhou 262500China School of Basic Medical Sciences Weifang Medical UniversityWeifang 261000China

A new kind of non-Gaussian quantum catalyzed state is proposed via multiphoton measurements and two-mode squeezing as an input of thermal *** characteristics of the generated multiphoton catalysis output state depends on the thermal parameter,catalyzed photon number and squeezing *** then analyze the nonclassical properties by examining the photon number distribution,photocount distribution and partial negativity of the Wigner *** findings indicate that nonclassicality can be achieved through the implementation of multiphoton catalysis operations and modulated by the thermal parameter,catalyzed photon number and squeezing parameter.

关键词： two-mode squeezing multiphoton catalysis nonclassicality Wigner function

基于知识和数据联合驱动的全灌浆套筒失效模式预测与解释

在线全文

学校读者我要写书评

暂无评论

工程力学 2024年第6期41卷 130-144页

作者：马高覃春雄王瑶湖南大学土木工程学院长沙410082 工程结构损伤诊断湖南省重点实验室(湖南大学) 长沙410082

为精准预测全灌浆套筒失效模式(钢筋拉断、钢筋拔出),该文提出一种基于知识和数据联合驱动的全灌浆套筒失效模式预测方法。根据348例全灌浆套筒试验数据,通过机器学习回归算法与规范公式分别得到全灌浆套筒灌浆连接承载力预测值与钢筋... 详细信息

为精准预测全灌浆套筒失效模式(钢筋拉断、钢筋拔出),该文提出一种基于知识和数据联合驱动的全灌浆套筒失效模式预测方法。根据348例全灌浆套筒试验数据,通过机器学习回归算法与规范公式分别得到全灌浆套筒灌浆连接承载力预测值与钢筋极限抗拉承载力计算值,并基于领域知识建立两者与失效模式关系的特征参数,将其与试验数据组成新的数据库。基于新的数据库,通过机器学习分类算法对全灌浆套筒失效模式自动预测。研究结果表明,随机森林算法对全灌浆套筒灌浆连接承载力与失效模式均具有最好的预测效果。相比其他全灌浆套筒失效模式预测方法,该文提出的知识和数据联合驱动预测方法更具竞争力,总体分类准确率可达到94.3%。结合Shapley additive explanations (SHAP)方法和Partial dependent plot (PDP)方法对预测结果进行解释,审视各参数对失效模式的影响。SHAP与PDP的解释结果都表明钢筋锚固长度与灌浆料抗压强度是对失效模式影响最大的两个试验参数,其中PDP解释结果还给出两者影响失效模式转化的临界值,分别为6.01 d(d为钢筋直径)、80.87 MPa。

关键词：全灌浆套筒失效模式知识驱动数据驱动结果解释

Excess non-COVID-19-related mortality among inflammatory bowel disease decedents during the COVID-19 pandemic

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第20期30卷 2677-2688页

作者： Sarah Rotondo-Trivette Xin-Yuan He Jamil S Samaan Fan Lv Emily Truong Michaela Juels Anthony Nguyen Xu gao jian Zu Yee Hui Yeo Fan-Pu ji Gil Y Melmed Department of Medicine Cedars-Sinai Medical CenterLos AngelesCA 90048United States Department of Infectious Disease The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004Shaanxi ProvinceChina Karsh Division of Gastroenterology and Hepatology Department of Medicine Cedars-Sinai Medical CenterLos AngelesCA 90048United States School of Mathematics and Statistics Xi’an Jiaotong UniversityXi’an 710049Shaanxi ProvinceChina David Geffen School of Medicine University of CaliforniaLos AngelesLos AngelesCA 90095United States Division of Gastroenterology The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004Shaanxi ProvinceChina National and Local Joint Engineering Research Center of Biodiagnosis and Biotherapy The Second Affiliated Hospital of Xi’an Jiaotong UniversityXi’an 710004Shaanxi ProvinceChina Key Laboratory of Surgical Critical Care and Life Support(Xi’an jiaotong University) Ministry of EducationXi’an 710004Shaanxi ProvinceChina

BACKGROUND The coronavirus disease 2019(COVID-19)pandemic disrupted healthcare in the United *** To investigate COVID-19-related and non-COVID-19-related death and characteristics associated with excess death among inflammatory bowel disease(IBD)*** We performed a register-based study using data from the National Vital Statistics System,which reports death data from over 99%of the United States population,from January 1,2006 through December 31,***-related deaths among adults 25 years and older were stratified by age,sex,race/ethnicity,place of death,and primary cause of *** and actual age-standardized mortality rates(ASMRs)per 100000 persons were *** 49782 IBD-related deaths occurred during the study ***-COVID-19-related deaths increased by 13.14%in 2020 and 18.12%in 2021[2020 ASMR:1.55 actual vs 1.37 predicted,95%confidence interval(CI):1.26-1.49;2021 ASMR:1.63 actual vs 1.38 predicted,95%CI:1.26-1.49].In 2020,non-COVID-19-related mortality increased by 17.65%in ulcerative colitis(UC)patients between the ages of 25 and 65 and 36.36%in non-Hispanic black(NHB)Crohn’s disease(CD)*** the pandemic,deaths at home or on arrival and at medical facilities as well as deaths due to neoplasms also *** IBD patients suffered excess non-COVID-19-related death during the *** death was associated with younger age among UC patients,and with NHB race among CD *** death at home or on arrival and due to neoplasms suggests that delayed presentation and difficulty accessing healthcare may have led to increased IBD mortality.

关键词： Inflammatory bowel disease Ulcerative colitis Crohn’s disease COVID-19 Excess death Race Sex Disparities

Key progresses of MOE key laboratory of macromolecular synthesis and functionalization in 2022

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3期35卷 114-126页

作者： Xumeng Deng Kaihao Chen Kai Pang Xiaoting Liu Minsong gao jie Ren Guanwen Yang Guangpeng Wu Chengjian Zhang Xufeng Ni Peng Zhang jian ji jianzhao Liu Zhengwei Mao Ziliang Wu Zhen Xu Haoke Zhang Hanying Li MOE Key Laboratory of Macromolecular Synthesis and Functionalization International Research Center for X PolymersDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China

In 2022,The MOE Key Laboratory of Macromolecular Synthesis and Functionalization in Zhejiang University had achieved several important ***,a series of well-defined dinuclear organoboron catalysts were developed to precisely control the enchainment of ether and carbonate segments during the copolymerization of CO_(2)and ***,polyester had been synthesized through cationic copolymerization of cyclic ***,ring-opening polymerization of carbon dioxide based valerolactone had been achieved,revealing the prospect of 3-ethylidene-6-vinyltetrahydro-2H-pyran-2-one(EVL)in utilizing CO_(2)and synthesizing functional ***,machine learning methods have been applied to biomaterial research,enabling high-throughput screening of functional biomaterial surfaces for implantable devices,and searching for potent antimicrobial peptides in whole combinatorial peptide ***,methods of characterization of biomacromolecule RNA transcription and manipulation of nucleoside modification were ***,artificial enzymes-armed Bifidobacterium Longum probiotics were established to tune down gut ***,three-dimensional(3D)printing technologies were used to engineer tough supramolecular ***,hydroplastic foaming graphene frameworks for acoustic and conductive polymer composites were provided for ***,aggregate photophysics about the nature of through-space interactions(TSIs)and manipulating their strength in small molecules with non-conjugated structure had been ***,the forming mechanism of a newfound nested texture in poly(L-lactic acid)(PLLA)spherulitic films had been ***,the isotropically dyeing mechanism of KDP single crystals grown from hydrogels have been *** related works are reviewed in this paper.

关键词： Polymer Catalyst Biomaterial research mRNA Hydrogel Graphene Crystal