检索结果-南通市图书馆

Chinese Chemical Letters 2024年第10期 227-230页

作者： Bingbing Shi Yuchun Wang Yi Zhou Xing-Xing Zhao Yizhou Li Nuoqian Yan Wen-juan Qu Qi Lin Tai-Bao Wei Key Laboratory of Polymer Materials of Gansu Province College of Chemistry and Chemical Engineering Northwest Normal University

Oligo[n]rotaxanes are one of the most extensively stud.ed.categories of mechanically bond.d.macromolecules. In this stud., a supramolecular oligo[2]rotaxane is successfully constructed.d.iven by platinum(Ⅱ) metallacycle and.pillar[5]arene-based.host–guest interactions in an orthogonal way. The supramolecular oligo[2]rotaxane is further applied.in fabricating a light harvesting system.

关键词：

Appraisal of CO2 storage potential in compressional hyd.ocarbon-bearing basins: Global assessment and.case stud. in the Sichuan Basin(China)

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Geoscience Frontiers 2020年第6期11卷 2309-2321页

作者： Xiaolong Sun juan Alcald. Enrique gomez-Rivas Lucía Struth Gareth Johnson Anna Travé d.partment of Mineralogy Petrology and Applied GeologyUniversity of BarcelonaMartíi Franquès s/nBarcelona08028Spain d.partment of Structure and.d.namics of the Earth Institute of Earth Sciences Jaume AlmeraICTJA-CSICLluis Sole i Sabaris s/nBarcelona08028Spain d.partment of Civil and.Environmental Engineering University of StrathclydeGlasgowG11XZUnited Kingdom

Carbon capture and.storage(CCS)has been proposed.as a potential technology to mitigate climate ***,there is currently a huge gap between the current global d.ployment of this technology and.that which will be ultimately *** CO2 can be captured.at any geographic location,storage of CO2 will be constrained.by the geological storage potential in the area the CO2 is *** geological storage potential can be evaluated.at a very high level accord.ng to the tectonic setting of the target *** d.te,CCS d.ployment has been restricted.to more favourable tectonic settings,such as extensional passive margin and.post-rift basins and.compressional foreland.***,to reach the ad.quate level of d.ployment,the potential for CCS of regions in d.fferent tectonic settings need. to be explored.and.assessed.***,the potential of compressional basins for carbon storage has not been universally evaluated.accord.ng to the global and.regional carbon emission ***,we present an integrated.source-to-sink analysis tool that combines comprehensive,open-access information on basin d.stribution,hyd.ocarbon resources and.CO2 emissions based.on geographical information systems(GIS).Compressional settings host some of the most significant hyd.ocarbon-bearing basins and.36% of inland.CO2 emissions but,to d.te,large-scale CCS facilities in compressional basins are concentrated.in North America and.the Mid.le East *** source-to-sink tool allows id.ntifying five high-priority regions for prospective CCS d.velopment in compressional basins:North America,north-western South America,south-eastern Europe,the western Mid.le East and.western *** present a stud. of the characteristics of these areas in terms of CO2 emissions and.CO2 storage ***,we cond.ct a d.tailed.case-stud. analysis of the Sichuan Basin(China),one of the compressional basins with the greatest CO2 storage *** results ind.cate that c

关键词： CO2 storage Compressional basins CO2 emissions Sichuan Basin

Protective Effect of Naringenin on Acute Myocard.al Ischemia-reperfusion Injury in Rats

在线全文

学校读者我要写书评

暂无评论

Med.cinal Plant 2024年第3期15卷 50-52页

作者： Xia ZHANG Ping ZHOU juan LI Zhaojun XIANG Qianqian LUO Qing d.NG d.partment of Neurosurgery Taihe Hospital of Shiyan CityHubei University of MedicineShiyan 442000China Gynecology and.Obstetrics Taihe HospitalHubei University of MedicineShiyan 442000China

[Objectives]To investigate the protective mechanism of naringenin on acute myocard.al ischemia-reperfusion injury(AMI-RI)in Sprague-d.wley(Sd.rats.[Method.]A total of 32 Sd.rats with AMI-RI mod.l construction were rand.mly d.vid.d.into AMI-RI mod.l control group and.citrus pigment A/B/C groups(n=8).The naringenin A,B,and.C groups were ad.inistrated.20,40 and.80 mg/(kg•d.for 10 *** AMI group served.as the negative control and.was not *** the conclusion of the treatment regimen,a sample of intraventricular blood.was collected.for the purpose of measuring lactate d.hyd.ogenase(Ld.),glutathione peroxid.se(GLH-PX),nitric oxid.(NO),and.superoxid. d.smutase(SOd.***,myocard.al tissue was id.ntified.within the ischemic *** content of malond.ald.hyd.(Md.)was d.termined.by ind.cing nitric oxid. synthase(iNOS)and.end.d.rmal nitric oxid. synthase(eNOS)positive cells in the left anterior d.scend.ng coronary artery.[Results]Following citrus treatment,the contents of GLH-PX and.SOd.in ventricular blood.of the citrus B group were found.to be significantly elevated.while the contents of NO and.Ld. in myocard.al Md. and.ventricle were observed.to be significantly *** number of eNOS-positive cells was significantly increased.while the number of iNOS-positive cells was significantly *** d.fference was statistically significant when compared.with the AMI-RI group(Pd.in the above ind.cators in the citrus C group were more pronounced.than those observed.in the citrus B *** d.fference between the citrus C and.the B group was statistically significant(Pd.cating that this effect is concentration d.pend.nt.[Conclusions]In ad.ition to its ability to inhibit myocard.al lipid.peroxid.tion d.ring AMI-RI by increasing SOd.activity,naringenin may also affect the synthesis and.release of NO by regulating eNOS and.iNOS,thereby achieving protection against *** effect is enhanced.as the d.se of the d.ug inc

关键词： Rat Naringenin Acute myocard.al ischemia-reperfusion Lipid peroxid.tion Ind.cible/end.thelial nitric oxid. synthase

A novel mouse mod.l of calcific aortic valve stenosis

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

Animal Mod.ls and.Experimental Med.cine 2024年第4期7卷 523-532页

作者： Ningjing Qian Yaping Wang Wangxing Hu Naifang Cao Yi Qian Jinyong Chen juan Fang d.lin Xu Haochang Hu Shuangshuang Yang d.o Zhou Hanyi d.i d.ngd.ng Wei Jian'an Wang Xianbao Liu d.partment of Card.ology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina State Key Laboratory of Transvascular Implantation d.vices China Card.ovascular Key Laboratory of Zhejiang Province HangzhouChina d.partment of Card.ovascular Surgery The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina d.partment of End.crinology The Second Affiliated HospitalZhejiang University School of MedicineHangzhouChina Binjiang Institute of Zhejiang University HangzhouChina

Background.Calcific aortic valve stenosis(CAVS)is one of the most challenging heart d.seases in clinical with rapid.y increasing ***,stud. of the mecha-nism and.treatment of CAVS is hampered.by the lack of suitable,robust and.efficient mod.ls that d.velop hemod.namically significant stenosis and.typical calcium ***,we aim to establish a mouse mod.l to mimic the d.velopment and.features of ***:The mod.l was established.via aortic valve wire injury(AVWI)combined.with vitamin d.subcutaneous injected.in wild.type C57/BL6 *** transthoracic echocard.ography was applied.to evaluate aortic jet peak velocity and.mean *** specimens were collected.and.examined.in respect of valve thickening,calcium d.position,collagen accumulation,osteogenic d.fferentiation and.***:Serial transthoracic echocard.ography revealed.that aortic jet peak velocity and.mean grad.ent increased.from 7 d.ys post mod.l establishment in a time d.pend.ent manner and.tend.d.to be stable at 28 *** with the sham group,sim-ple AVWI or the vitamin d.group,the hybrid.mod.l group showed.typical pathological features of CAVS,includ.ng hemod.namic alterations,increased.aortic valve thicken-ing,calcium d.position,collagen accumulation at 28 *** ad.ition,osteogenic d.f-ferentiation,fibrosis and.inflammation,which play critical roles in the d.velopment of CAVS,were observed.in the hybrid.***:We established.a novel mouse mod.l of CAVS that could.be ind.ced.efficiently,robustly and.economically,and.without genetic *** provid.s a fast track to explore the und.rlying mechanisms of CAVS and.to id.ntify more effec-tive pharmacological targets.

关键词： animal mod.l calcific aortic valve stenosis valve calcification

基于α⁃shape和多边形偏置的断层自动提取方法

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

石油地球物理勘探 2024年第1期59卷 142-150页

作者：颜世翠王树华张娟中国石化胜利油田分公司勘探开发研究院山东东营257015

断层解释在储层预测和地质建模中至关重要,目前采用人工方式解释断层工作量大、效率低,不能满足油田勘探开发的精细要求。为此,以传统相干属性或断层智能预测数据体分析、优选为基础,提出一种基于α⁃shape和多边形偏置的断层自动提取方... 详细信息

断层解释在储层预测和地质建模中至关重要,目前采用人工方式解释断层工作量大、效率低,不能满足油田勘探开发的精细要求。为此,以传统相干属性或断层智能预测数据体分析、优选为基础,提出一种基于α⁃shape和多边形偏置的断层自动提取方法。首先通过人机交互确定目标断层位置;其次研发并利用α⁃shape断点边缘提取算法和倾角约束多边形偏置算法,实现对断层空间边界的精确刻画;最后以该边界为约束条件设置目标断层重合度阈值,约束区域生长算法的延展范围,完成三维断层自动提取。所提方法在胜利油田多个地区应用均取得较好效果,在征6地区刻画断层空间展布形态,断层完整性及精确度明显优于某商业软件;在辛50地区开展断层自动提取,大幅提高了工作效率。

关键词：断点边缘提取倾角约束多边形偏置算法断层重合度阈值

HF-VHF NEMS resonators enabled.by 2d.semicond.ctor ReSe

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

Science China(Information Sciences) 2024年

作者： Jie TANG Ziluo SU Shuang CAI Yalan WANG Luming WANG Jiaqi WU Jiaze QIN Jiankai ZHU Bo XU juan XIA Zenghui WANG Institute of Fund.mental and.Frontier Sciences University of Electronic Science and Technology of China State Key Lab of Transd.cer Technology Shanghai Institute of Microsystem and Information TechnologyChinese Academy of Sciences State Key Laboratory of Electronic Thin Films and.Integrated.d.vices University of Electronic Science and Technology of China

Two-d.mensional （2d. semicond.ctors offer a plethora of new opportunities for constructing novel *** them, rhenium d.selenid. (ReSe2, crystal structure in Figure 1（a）) stand. out d.e to its unique interlayer coupling, which can improve homogeneity in d.vice performances when combined.with wafer scale growth. It has since been employed.to realize 2d.laser, transistor, and.photod.tector. However, unlike the optical and.electrical d.grees of freed.m, its mechanical d.gree of freed.m has remained.unexplored.to d.te, und.rmining its potential in sensing,signal processing, and.computing by build.ng novel nanoelectromechanical systems （NEMS）[1, 2].

关键词：

Laparoscopic sacrocolpopexy for treatment of pelvic organ prolapse,a prospective observation cohort with follow-up time over 7 years

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Chinese Med.cal Journal 2024年第12期137卷 1477-1479页

作者： Jianbin Guo Xiaochen Song Shuo Liang Yuan Wang Yang Ye Qianqian Gao juan Chen Lan Zhu d.partment of Obstetrics and.Gynecology Peking Union Medical College HospitalChinese Academy of Medical Sciences&Peking Union Medical CollegeNational Clinical Research Center for Obstetric&Gynecologic DiseasesBeijing 100730China

To the Ed.tor:Pelvic organ prolapse(POP)is a common pelvic floor d.sord.r in old.r women and.is responsible for a significant d.crease in health-related.quality of *** the increased.longevity of women,POP is becoming a major health concern.[1]Laparoscopic sacrocolpopexy(LSC)is a common mesh-based.surgical approach for severe prolapse,and.a high cure rate and.few complications have been reported.[2]To our knowled.e,the long-term d.rability,complications,and.pelvic floor symptoms after LSC have not been fully evaluated.in d.tail.A few stud.es assessed.the 5-year outcome after LSC,but these reports were limited.by their retrospective d.sign,uneven follow-up time,or inconsistent outcome assessment.

关键词： prolapse pelvic Laparoscopic

在线全文

学校读者我要写书评

暂无评论

中国创新驱动水平测度、地区差异与动态演进

统计与决策 2024年第4期40卷 56-61页

作者：唐娟王华秦放鸣长沙民政职业技术学院商学院长沙417000 唐山师范学院海洋学院河北唐山063000 新疆大学经济与管理学院乌鲁木齐830046

创新驱动是高质量发展的第一动力,文章界定了创新驱动的内涵,明确其内在作用机制,在此基础上概括出认知基础、主体投入、成果产出和环境支撑四大维度。基于四大维度构建创新驱动水平评价指标体系,运用主成分分析法测算出创新驱动水平,... 详细信息

创新驱动是高质量发展的第一动力,文章界定了创新驱动的内涵,明确其内在作用机制,在此基础上概括出认知基础、主体投入、成果产出和环境支撑四大维度。基于四大维度构建创新驱动水平评价指标体系,运用主成分分析法测算出创新驱动水平,并借助d.gum基尼系数和Kernel密度估计方法揭示创新驱动水平的区域差异及演进趋势。结果表明:(1)虽然中国整体创新驱动水平大幅度提高,但是,地区之间的差异也越来越大,东部地区的创新驱动发展水平显著高于中西部地区;(2)各省份间的创新驱动水平差距较大,甚至部分省份的创新驱动水平在某些年份出现倒退的情况;(3)创新驱动的制度保障还不完善,地区之间的技术扩散和转移机制不畅,造成了不同的创新驱动发展路径。

关键词：创新驱动地区差异主成分分析 Kernel密度估计

Id.ntification of the cytochrome P450s responsible for the biosynthesis of two types of aporphine alkaloid. and.their d. novo biosynthesis in yeast

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

Journal of Integrative Plant Biology 2024年第8期66卷 1703-1717页

作者： Qishuang Li Xiang Jiao Xinyi Li Wenlong Shi Ying Ma Xiangmei Tan Jingyi Gan Jimei Liu Jian Yang Jian Wang Baolong Jin Tong Chen Ping Su Yujun Zhao Yifeng Zhang Jinfu Tang Guanghong Cui Yun Chen juan Guo Luqi Huang School of Trad.tional Chinese Pharmacy China Pharmaceutical UniversityNanjing 211198China State Key Laboratory for Quality Ensurance and.Sustainable Use of d.o-d. Herbs National Resource Center for Chinese Materia MedicaChina Academy of Chinese Medical SciencesBeijing 100700China d.partment of Life Sciences Chalmers University of TechnologyGothenburg SE-41296Sweden State Key Laboratory of Natural and.Biomimetic d.ugs School of Pharmaceutical SciencesPeking UniversityBeijing 100191China State Key Laboratory of Bioactive Substance and.Function of Natural Med.cines Institute of Materia MedicaThe Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050China

Aporphine alkaloid. have d.verse pharmacological activities;however,our und.rstand.ng of their biosynthesis is relatively *** stud.es have classified.aporphine alkaloid. into two categories based.on the configuration and.number of substituents of the d.ring and.have proposed.preliminary biosynthetic pathways for each *** this stud.,we id.ntified.two specific cytochrome P450 enzymes(CYP80G6 and.CYP80Q5)with d.stinct activities toward.S)-configured.and.R)-configured.substrates from the herbaceous perennial vine Stephania tetrand.a,shed.ing light on the biosynthetic mechanisms and.stereochemical features of these two aporphine alkaloid.***,we characterized.two CYP719C enzymes(CYP719C3 and.CYP719C4)that catalyzed.the formation of the methylened.oxy brid.e,an essential pharmacophoric group,on the A-and.d.rings,respectively,of aporphine *** the functional characterization of these crucial cytochrome P450 enzymes,we reconstructed.the biosynthetic pathways for the two types of aporphine alkaloid. in bud.ing yeast(Saccharomyces cerevisiae)for the d. novo prod.ction of compound. such as(R)-glaziovine,(S)-glaziovine,and.*** stud. provid.s key insight into the biosynthesis of aporphine alkaloid. and.lays a found.tion for prod.cing these valuable compound. through synthetic biology.

关键词： aporphine alkaloid. biosynthesis CYP719C CYP80 engineered.yeast

华侨建筑遗产作为旅游吸引物的侨乡村落振兴模式:特征与困境——基于行动者网络理论的广东台山5座村落的实证

在线全文

学校读者我要写书评

暂无评论

热带地理 2024年第10期44卷 1812-1825页

作者：黎丽华曾娟中山大学地理科学与规划学院广州510006

侨乡村落是中国乡村的特殊类型,华侨建筑遗产作为核心旅游吸引物是目前侨乡村落振兴的主要模式,但现有研究对该模式下各类侨村发展特征与困境、侨产承担的角色功能及对侨村的影响关注不足,侨乡振兴所面临迫切问题未能在学理层面得到充... 详细信息

侨乡村落是中国乡村的特殊类型,华侨建筑遗产作为核心旅游吸引物是目前侨乡村落振兴的主要模式,但现有研究对该模式下各类侨村发展特征与困境、侨产承担的角色功能及对侨村的影响关注不足,侨乡振兴所面临迫切问题未能在学理层面得到充分解释。文章运用观察与访谈等方法,在广东省台山市20座侨村进行为期45 d.实地调查,聚焦于5座典型侨村,依据振兴动力特征将侨村振兴类型识别为“自组织型”“双驱动型”与“多联动型”3类。进一步基于行动者网络理论,剖析以侨产为旅游吸引物的不同类型侨村的振兴模式主要特征及所面临各自困境。研究发现:1)3类侨村在侨产角色与关键行动者方面具有迥异特征,即侨产的角色与功能分别为“具有生活性和象征性的离散旅游原真性纪念物”“具有示范性和吸引性的地方政府示范村展示物”与“具有生产性和盈利性的企业特色景区生产物”。关键行动者分别为“村民、华侨与侨联”“村委会与政府”与“企业”。2)3类侨村面临的主要困境分别聚焦于“建设话语权争夺”“侨产归属权流散”与“侨产收益权冲突”。文章提出需重点关注“华侨-侨产经纪人-侨房实际使用者”的侨产资源开发利用链条。未来侨村振兴研究应聚焦于侨产作为离散旅游吸引物的角色与特征、华人华侨作为游客的需求及侨房产权背后涉及的权力冲突的演变与影响等。

关键词：侨乡乡村振兴华侨建筑遗产产权行动者网络理论离散旅游江门五邑

同方期刊数据库