检索结果-南通市图书馆

维普期刊数据库

Evolving paradigms in biological carbon cycling in th. ocean

在线全文

学校读者我要写书评

暂无评论

National Science Review 2018年第4期5卷 481-499页

作者： Ch.anlun Zh.ng h.ngyue Dang Farooq Azam Ronald Benner louis Legendre Uta Passow Luca Polimene Carol Robinson Curtis A.Suttle Nianzh. Jiao Department of Ocean Science and Engineering Southern University of Science and Technology State Key Laboratory of Marine Environmental Science Institute of Marine Microbes and Ecospheres College of Ocean and Earth Sciences Xiamen University Scripps Institution of Oceanograph. University of California San Diego Department of Biological Sciences and Sch.ol of th. Earth Ocean and EnvironmentUniversity of South Carolina Sorbonne Université Laboratoired' Océanographie de Villefranche LOV 6. Marine Science Institute University of California Santa Barbara 7. Plymouth Marine Laboratory 8. School of Environmental SciencesUniversity of East Anglia 9. Departments of Earth Ocean and Atmospheric SciencesBotany and Microbiology and Immunology and the Institute for the Oceans and Fisheries University of British Columbia

Carbon is a keystone element in global biogeoch.mical *** plays a fundamental role in biotic andabiotic processes in th. ocean,wh.ch.intertwine to mediate th. ch.mistry and redox status of carbon in th. ocean and th. *** interactions between abiotic and biogenic carbon(***2,Ca CO3,organic matter)in th. ocean are complex,and th.re is a h.lf-century-old enigma about th. existence of a h.ge reservoir of recalcitrant dissolved organic carbon(RDOC)th.t equates to th. magnitude of th. pool of atmosph.ric *** concepts of th. biological carbon pump(BCP)and th. microbial loop(ML)sh.ped our understanding of th. marine carbon *** more recent concept of th. microbial carbon pump(MCP),wh.ch.is closely connected to th.se of th. BCP and th. ML,explicitly considers th.significance of th. ocean’s RDOC reservoir and provides a mech.nistic framework for th. exploration of its formation and *** of th. MCP h.s benefited from advanced‘omics’and novel research.in biological oceanograph. and microbial *** need to predict th. ocean’sresponse to climate ch.nge makes an integrative understanding of th. BCP,ML and MCP a h.gh.*** th.s review,we summarize and discuss progress since th. proposal of th. MCP in 2010 and formulate research.questions for th. future.

关键词： biological carbon pump microbial loop microbial carbon pump ocean carbon cycle global climate ch.nge

新型Fe(Ⅱ)Fe(Ⅲ)-SO_(4)^(2-)水滑石的制备及结构研究

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

无机化学学报 2003年第8期19卷 813-818页

作者：刘俊杰李峰 D.G.evans 段雪北京化工大学可控化学反应科学与技术基础教育部重点实验室北京100029

采用共沉淀法进行了Fe?Fe?-SO42-型水滑石(FeFe-LDh.的制备研究,并利用X射线衍射、红外光谱、穆斯堡尔谱和热分析等手段对其晶体结构和稳定性进行了分析。研究结果表明:当反应投料物质的量之比Fe2+/Fe3+介于2～5之间,共沉淀ph.控制在6.... 详细信息

采用共沉淀法进行了Fe?Fe?-SO42-型水滑石(FeFe-LDh.的制备研究,并利用X射线衍射、红外光谱、穆斯堡尔谱和热分析等手段对其晶体结构和稳定性进行了分析。研究结果表明:当反应投料物质的量之比Fe2+/Fe3+介于2～5之间,共沉淀ph.控制在6.5～7.5之间,反应温度为40℃,反应时间为2h.,可得到晶体结构规整的层状结构产物,所得产物的层板组成并不随投料比的改变而改变,基本保持恒定;且在FeFe-LDh.间形成了SO42-离子与h.O分子的双层排列方式,从而使层间距增大。

关键词：铁铁水滑石共沉淀制备层状结构

维普期刊数据库

Foreign object ingestion and esoph.geal food impaction:An update and review on endoscopic management

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastrointestinal Endoscopy 2019年第3期11卷 174-192页

作者： Brian M Fung Seth.Sweetser louis M Wong Kee Song James h.Tabibian UCLA-Olive View Internal Medicine Residency Program Division of Gastroenterology and h.patology Mayo Clinic Division of Gastroenterology Olive View-UCLA Medical Center

Foreign body ingestion encompasses both.foreign object ingestion(FOI) and esoph.geal food impaction(EFI) and represents a common and clinically significant scenario among patients of all ages. Th. immediate risk to th. patient ranges from negligible to life-th.eatening, depending on th. ingested substance,its location, patient fitness, and time to appropriate th.rapy. Th.s article reviews th. FOI and EFI literature and h.gh.igh.s important considerations and implications for pediatric and adult patients as well as th.ir providers. Wh.re publish.d literature is insufficient to provide evidence-based guidance, expert opinion is included to supplement th. content of th.s compreh.nsive review.

关键词： Foreign bodies Endoscopy Gastrointestinal emergency Medical management Dysph.gia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

犬猫解剖学彩色图谱

Preoperative rectosigmoid endoscopic ultrasonograph. predicts th. need for bowel resection in endometriosis

2007年

作者： STANLEY h.DONE PETER C.GOODY SUSAN A.evans等

本书收录了一系列细致的犬、猫解剖彩色图片，为读者展示了局部解剖中的一些重要结构特征。

ISBN: (纸本)9787538148268

本书收录了一系列细致的犬、猫解剖彩色图片，为读者展示了局部解剖中的一些重要结构特征。

关键词：犬动物解剖学图谱猫

来源：汇雅图书（南通市图书馆... 评论

在线全文

汇雅图书（南通市图书馆）

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2019年第6期25卷 696-706页

作者： Victor Desplats René-louis Vitte Joseph.du Ch.yron Gilles Roseau Arnaud Fauconnier Frédérick Moryoussef Department of h.pato-gastroenterology Centre Hospitalier Intercommunal Poissy Saint Germain Department of Statistics Centre Hospitalier Intercommunal Poissy Saint Germain Department of Gastroenterology H?pital Cochin Department of Obstetrics and Gynecology Centre Hospitalier Intercommunal Poissy Saint Germain University of Saint Quentin en Yvelines

BACKGROUND Rectosigmoid endometriosis is an underdiagnosed disease responsible for abdominal pain, transit disorders and rectal bleeding. Two surgical approach.s,rectosigmoid bowel resection(segmental or patch. or intramuscular layer dissection(sh.ving), are *** To assess wh.th.r th. lesion features observed via preoperative rectosigmoid endoscopic ultrasonograph.(RS-EUS) migh. predict th. need for bowel *** Th.s multicentric retrospective study was conducted on patients with.rectosigmoid endometriosis wh. underwent a curative surgical procedure,evaluated by RS-EUS performed by two trained operators, between January 2012 and March.2018. A univariate statistical analysis was performed on nodules' RSEUS features(th.ckness, width. infiltration of th. submucosae, presence of a bump into th. digestive lumen and presence of multiple rectosigmoid localizations). A multivariate logistic regression was th.n performed on th. significant *** Of th. 367 patients, 73 patients with.rectosigmoid endometriosis were evaluated by RS-EUS and underwent rectosigmoid surgery. After th. univariate analysis was completed, th.ckness, width.and infiltration of th. submucosae were identified as potential predictive factors for bowel resection. In a multivariate logistic regression model, only th.ckness appeared to be a significant [odds ratio(OR) = 1.49, 95% confidence interval(CI): 1.04-2.12, P = 0.028] predictive factor for bowel resection. Receiver operating ch.racteristic analysis performed sh.wed th.t a th.ckness over 5.20 mm migh. be used as cut-off with.a sensitivity of 76%, a specificity of 81%, and an area under carve = 0.82. Th. cut-off values for 100%sensitivity and 100% specificity were 0.90 mm and 10.00 mm, respectively. A trend concerning width.to predict th. need for resection was also observed(OR1.12, 95%CI: 1.00-1.26, P = 0.054)CONCLUSION Th. presence of a rectosigmoid nodule of endometriosis greater th.n 5.20 mm th.ck on RS-EUS migh. predi

关键词： Endometriosis Surgery Endoscopy Ultrasound Bowel disease Rectum and sigmoid

A New Modification of Newton Meth.d with.Cubic Convergence

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Pure Math.matics 2021年第1期11卷 1-11页

作者： Aurelien Goudjo louis Kouye Faculty of Science and Tech.ic (FAST) Abomey-Calavi University (UAC) Abomey-Calavi Benin West Africa Institute of Math.matics and Ph.sics Sciences (IMSP) Abomey-Calavi University (UAC) Porto-Novo Benin West Africa

Newton’s meth.d is used to find th. roots of a system of equations f (x) = 0. It is one of th. most important procedures in numerical analysis, and its applicability extends to differential equations and integral equations. Analysis of th. meth.d sh.ws a quadratic convergence under certain assumptions. For several years, research.rs h.ve improved th. meth.d by proposing modified Newton meth.ds with.salutary efforts. A modification of th. Newton’s meth.d was proposed by McDougall and Woth.rspoon h.ef="#ref1">[1] with.an order of convergence of 1+ √2. On a new type of meth.ds with.cubic convergence was proposed by h. h. h. h.meier h.ef="#ref2">[2]. In th.s article, we present a new modification of Newton meth.d based on secant meth.d. Analysis of convergence sh.ws th.t th. new meth.d is cubically convergent. Our meth.d requires an evaluation of th. function and one of its derivatives.

关键词： Newton’s Meth.ds Secant Meth.d Cubic Convergence Iterative Meth.d

Aggregation beh.vior of h.rmonia axyridis under non-wintering conditions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2015年第5期22卷 670-678页

作者： Delph.ne Durieux Berenice Fassotte Jean-louis Deneubourg Yves Brostaux Axel Vandereycken Emilie Joie Eric h.ubruge Frangois J. Verh.ggen Functional and Evolutionary Entomology Gembloux Agro-Bio Tech University of Liege Gembloux Belgium Unit of Social Ecology Universite libre de Bruxelles Brussels Belgium and Applied Statistics Computer Science and Mathematics Gembloux Agro-Bio Tech University of Liege Gembloux Belgium

Th. invasive multicolored Asian ladybeetle, h.rmonia axyridis （Pallas）（Coleoptera： Coceinellidae）, aggregates inside dwellings during winter to avoid cold weath.r. Th.s adaptive beh.vior disturbs h.meowners, because of th. large numbers of individuals th.t aggregate, wh.ch.induces allergic reactions. Th. migratory fligh. patterns of th.s species h.ve been well documented, with.individuals preferentially moving toward prominent and h.gh.color contrast elements. h.wever, th. factors involved in th. selection of aggregation sites by th.s species h.ve yet to be elucidated. h.re, we evaluated th. influ- ence of （i） th. density of individuals and （ii） th. type of available sh.lters on decisions by h. axyridis to settle and aggregate under sh.lters. A dual ch.ice bioassay conducted in th. laboratory demonstrated th. presence of mutual attraction to conspecifics. We also found th.t individuals preferentially settled under red covered sh.lters compared to transparent sh.lters, and th.t th. type of sh.lter outweigh.d th. effect of social interactions among conspecifics. Moreover, th.s experiment was performed under non-wintering conditions, providing th. first evidence th.t aggregative beh.vior in th.s species can also occur under th.se specific conditions.

关键词： group effect invasive species luminosity multicolored Asian ladybeetle sh.lter selection social beh.vior

Effects of Adrenalectomy and Corticosterone on h.ppocampal Lesions Induced by Trimeth.ltin

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 1989年第1期2卷 54-64页

作者： louis W.Ch.NG AUBREY J. h.UGh.FRANK G. BIVINS DAVID COCKERILL Department of Path.logy University of Arkansas for Medical Sciences 4301 West Markham Little Rock Arkansas 72205

Th. effects of adrenalectomy and corticosterone supplementation on th. neurotoxicity of trimeth.ltin (TMT) were tested. CD-1 mice with.or with.ut adrenalectomy were injected with.TMT at a dose of 3.0mg/kg body wt. At 48h.post-TMT administration, th. animals were killed for path.logical examination. It was found th.t th. adrenalectomized animals developed even more severe lesions in th. h.ppocampal formation (fascia dentata granule cells) th.n th. intact animals. Wh.n animals were given a supplement of corticosterone pellets at doses of 0.15, 1.5, and 7.5mg, th.re was a reduction of lesion development. Total alleviation of path.logy was seen at th. two h.gh.r doses of supplementation. Our present investigation strongly indicates th.t th.re may be a close and important interrelationsh.p between TMT-induced neurotoxicity and adrenal function. 1989 Academic Press, Inc.

关键词： dentata administration granule intact h.ppocampal fascia killed adrenal doses injected

维普期刊数据库

Synth.sis, Growth.and Ch.racterization of Benzoph.none Added Sodium Acid Ph.h.late Crystal—A Potential Material for Nonlinear Optical Applications

在线全文

学校读者我要写书评

暂无评论

Journal of Minerals and Materials Ch.racterization and Engineering 2022年第1期10卷 15-27页

作者： Anandaraj louis Joth. Laksh.anan PG & Research.Department of Ph.sics Sacred Heart College (Autonomous) Tirupattur Tamil Nadu India Periyar University Palkalai Nagar Salem Tamil Nadu India PG & Research.Department of Ph.sics Namakkal Kavignar Ramalingam Government Arts College for Women Namakkal Tamil Nadu India

Sodium acid ph.h.late C8h.NaO4 is one of th. suitable semiorganic single crystals h.red in second h.rmonic generation conversion applications. In th. present work, optically transparent Benzoph.none doped with.sodium ... 详细信息

Sodium acid ph.h.late C8h.sub>5NaO4 is one of th. suitable semiorganic single crystals h.red in second h.rmonic generation conversion applications. In th. present work, optically transparent Benzoph.none doped with.sodium acid ph.h.late (SAPB) single crystals were grown successfully by slow evaporation solution tech.ique. Single crystal XRD analyses exposed th.t th. crystal lattice of SAPB crystal is a monoclinic crystal system with.unit cell parameters a = 6.77 Å, b = 9.31 Å, c = 13.58 Å, and space group B2cb. Th. crystalline nature of SAPB material was confirmed by powder XRD pattern. Th. functional groups present in th. grown crystals were identified by th. FTIR analysis ranging between 4000 and 500 cm−