检索结果-南通市图书馆

Natural variation in social conditions affects male mate choosiness in the amphipod Gammarus roeselii

Current Zoology 2022年第4期68卷 459-467页

作者： Konrad Lipkowski Sophie Steigerwald lisa m schulte Carolin Sommer-Trembo Jonas Jourdan Department of Wildlife/Zoo-Animal-Biology and Systematics Institute for EcologyEvolution and Diversity Goethe University FrankfurtMaxvon-Laue-Straße 13Frankfurt am MainD-60438Germany Department of Environmental Science Stockholm UniversitySvante Arrheniusväg 8StockholmSE-11418Sweden Zoological Institute University of BaselVesalgasse 1BaselCH-4051Switzerland Department of Aquatic Ecotoxicology Institute for EcologyEvolution and DiversityGoethe University Frankfurt am MainFrankfurt am MainGermany

The extent of male mate choosiness is driven by a trade-off between various environmental factors associated with the costs of mate acquisition,quality assessment and opportunity *** knowledge about natural variation in male mate choosiness across different populations of the same species,however,remains *** this study,we compared male mate choosiness across 10 natural populations of the freshwater amphipod Gammarus roeselii(Gervais 1835),a species with overall high male mating investments,and evaluated the relative influence of population density and sex ratio(both affecting mate availability)on male mate *** investigated amplexus establishment after separating mating pairs and presenting focal males with a novel,size-matched female from the same *** analysis revealed considerable effects of sex ratio and(to a lesser extent)population density on time until amplexus establishment(choosiness).male amphipods are able to perceive variable social conditions(e.g.,sex ratio)and modify their mating strategy accordingly:We found choosiness to be reduced in increasingly male-biased populations,whereas selectivity increases when sex ratio becomes female *** this,our study expands our limited knowledge on natural variations in male mate choosiness and illustrates the importance of sex ratio(i.e.,level of competition)for male mating decisions in natural *** for variation in sex ratios,therefore,allows envisioning a distinctive variation of choosiness in natural populations and highlights the importance of considering social background information in future behavioral studies.

关键词： amplexus Crustacea local adaptation mate choice population density sex ratio

来源：

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

Biology and control of the fruit borer, Conopomorpha sinensis Bradley on litchi （Litchi chinensis Sonn.） in northern Thailand

引用

Insect Science 2007年第6期14卷 525-529页

作者： mARIE JOY schulte KONRAD mARTIN JOACHIm SAUERBORN Institute of Plant Production and Agroecology in the Tropics and Subtropics University of Hohenheim Stuttgart Germany

Fruit and leaf shoot of litchi （Litchi chinensis） infestation by naturally occurring populations of the fruit bprer, Conopomorpha sinensis larvae and C. sinensis parasitization rates were determined in litchi orchards in northern Thailand at high （ca. 1 400 m ASL） and low （ca. 800 m ASL） elevations with different, non-overlapping fruiting seasons. In addition, spray applications of Bacillus thuringiensis var. aizawai, the natural compound spinosad and the chemical pesticide imidacloprid were conducted in the field to test the effects of these agents on C. sinensis fruit infestation rate. Fruit infestation rate and fruit growth, studied in a low elevation orchard, were sigmoidal and showed a highly significant positive correlation （P ≤ 0.01）. Leaf shoot infestation rate in the low elevation orchard decreased in the course of the fruiting season （march until may）, but increased in the high elevation orchard, where no fruits were present within the same period of time. Together, these results indicate that females of C. sinensis clearly prefer fruits over shoots for oviposition. If no fruits are available, which was the case in the high elevation orchard during that time, they are constrained to lay their eggs on shoots. The parasitization rate of C. sinensis larvae in untreated fruits was 54.3%. The parasitoid species were Chelonus chailini （90.8%） and Phanerotoma sp. （9.2%）. In the leaf shoots, C. sinensis was found to be parasitized by Phanerotoma sp. and Apanteles briareus. The applications of the different active agents had no significant effect on C. sinensis fruit infestation compared to the untreated control. Besides the cryptic life of the larvae, this is most probably explained by the fact that C. sinensis has several generations during the fruiting season. Because of the high parasitization rates recorded, an alternative and more effective control measure than the application of pesticides might be the augmentative release of parasitoids.

关键词： Conopomorpha sinensis fruit infestation Litchi chinensis northern Thailand,parasitoids pest control

来源：

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

Outcome in neonates with necrotizing enterocolitis and patent ductus arteriosus

引用

World Journal of Pediatrics 2016年第1期12卷 55-59页

作者： Ulf Kessler Franzisca schulte Dietmar Cholewa mathias Nelle Stephan C.Schaefer Peter m.Klimek Steffen Berger Department of Pediatric Surgery InselspitalBern University Hospital and University of BernSwitzerland Division of Neonatology Department of PediatricsInselspitalBern University Hospital and University of BernSwitzerland Institute of Pathology InselspitalUniversity of BernBernSwitzerland Department of Surgery HFR Fribourg-Cantonal HospitalSwitzerland

Background:There is no agreement of the influence of patent ductus arteriosus(PDA)on outcomes in patients with necrotizing enterocolitis(NEC).In this study,we assessed the infl uence of PDA on NEC ***:A retrospective study of 131 infants with established NEC was ***(death,disease severity,need for surgery,hospitalization duration),as well as multiple clinical parameters were compared between NEC patients with no congenital heart disease(n=102)and those with isolated PDA(n=29).Univariate,multivariate and stepwise logistic regression analyses were ***:Birth weight and gestational age were significantly lower in patients with PDA[median(95%CI):1120 g(1009-1562 g),28.4 wk(27.8-30.5 wk)]than in those without PDA[median(95%CI):1580 g(1593-1905 g),32.4 wk(31.8-33.5 wk);Pmultivariate OR=2.4,95%CI:0.82-2.39,P=0.111].Significant independent predictors for nonsurvival within the entire cohort were advanced disease severity stage III(OR=27.9,95%CI:7.4-105,Pmportant differences between the two study groups are controlled,only birth weight and disease severity may independently predict mortality.

关键词： congenital heart disease necrotizing enterocolitis neonatal mortality patent ductus arteriosus

来源：

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

Software improvement for evaluation of laryngopharyngeal pH testing(Restech)——a comparison between Data View 3 and 4

引用

World Journal of Gastrointestinal Surgery 2020年第5期12卷 236-246页

作者： Dolores Thea müller Elena schulte Benjamin Babic Laura Knepper Claudia Fuchs Wolfgang Schroder Christiane J Bruns Jessica m Leers Hans Friedrich Fuchs Department of General VisceralCancer and Transplant SurgeryUniversity of CologneKoln 50937Germany

BACKGROUND When gastroesophageal reflux contents reach above the upper esophageal sphincter,patients may,in addition to typical reflux symptoms,present with atypical,extraesophageal symptoms related to laryngopharyngeal reflux(LPR).Surgical treatment of LPR has shown to lead to 70%symptom improvement,however no gold standard for the diagnosis of LPR *** 2007,the Restech Dx-pH was released as a valid method to measure acid exposure above the upper esophageal ***,a new software update was introduced for analysis of measured pH data and calculation of composite *** effect of the changes applied to the new software version have not yet been *** To compare results generated by Data View 3 to the most recently released Data View *** All patients with gastroesophageal reflux disease symptoms were seen in a specialized surgical outpatient clinic for gastrointestinal function *** chart review was performed of all patients presenting with suspected gastroesophageal reflux disease and extraesophageal reflux symptoms,who underwent laryngopharyngeal pH monitoring using the Restech Dx-pH system(Respiratory Technology Corp.,Houston,TX,United States)and simultaneous esophageal pH *** View 3 and Data View 4 were used to evaluate Restech studies *** entries such as mealtimes,supine and upright periods,and symptoms were entered manually to ensure accuracy and precise conversion of data between both software *** t test was performed for statistical analysis of *** A total of 174 patients(63.8%female)met inclusion criteria,all suffering from extraesophageal reflux symptoms as well as typical gastroesophageal reflux disease *** RYAN score upright was 48.77 in Data View 3 compared to 22.17 in Data View 4,showing a significant difference(~aP=0.0001).Similar results were shown for supine period(mean RYAN Score Data View 35.29 vs 1.42 in Data View 4,~cP=0.0001).For upright pe

关键词： Gastroesophageal reflux disease Laryngopharyngeal reflux disease Esophageal pH testing Oropharyngeal pH testing Restech Dx pH Demeester score RYAN Score

来源：

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

德国人文聚落区生态单元制图国家项目

引用

生态学报 2003年第3期23卷 588-597页

作者： Wolfgang schulte Herbert Sukopp 李建新联邦德国环境部自然保护局波恩53179 柏林工业大学生态研究所柏林12165 中国科学院地理科学与资源研究所北京100101

联邦德国自然保护法、德国各州自然保护法要求在自然景观区和人文聚落区保护、管理和发展自然。实现这一法律要求 ,必须以现实的、全面的、高质量的、与自然保护原则相匹配的数据为基础。实践证明 ,城乡生态单元制图是获取和解释这些数... 详细信息

联邦德国自然保护法、德国各州自然保护法要求在自然景观区和人文聚落区保护、管理和发展自然。实现这一法律要求 ,必须以现实的、全面的、高质量的、与自然保护原则相匹配的数据为基础。实践证明 ,城乡生态单元制图是获取和解释这些数据不可或缺的手段。德国人文聚落区生态单元制图始于 1 978年 ,同年组建成立了德国联邦与各州自然保护部门参加并联合协调的“人文聚落区生态单元制图工作组”。 1 986年工作组提出了德国人文聚落区生态单元制图基本方案 ,1 993年完成基本方案修订版。基本方案的目标是在全国范围建立标准制图方法 ,使获取的科学数据可以相互比较。至 2 0 0 0年 ,德国在人文聚落区生态单元制图项目上的投资约合 2亿马克 ;至 2 0 0 1年 3月 ,德国有 2 2 3个大中城市已经完成或正在实施生态单元制图 ,人文聚落区生态单元制图已经成为德国各级政府生态规划的基本工作内容。

关键词：联邦德国自然保护法人文聚落区生态单元制图生态单元制图方法

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Nano-and micro-patterned Biomaterials

引用

复旦学报（自然科学版） 2007年第5期46卷 706-页

作者： m.C.Lensen m.Diez V.A.schulte P.mela m.mller DWI e.V.and Institute of Technical and macromolecular Chemistry RWTH AachenGermany

1 Results Our objective is two fold: we (ⅰ) aim at the development of novel patterning methodologies in order to (ⅱ) achieve control over the positioning and alignment of living *** patterning of the biointerfaces is carried out both at the micro-and nanometer scale and involve (bio)chemical as well as topographic *** former are relatively easily obtained by patterning techniques adapted from (conventional) soft lithography,*** means of micro-contact printing (μ-CP).The topographic pat...

关键词： soft lithography hydrogels nanoimprinting UV-curing cell adhesion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

1例27孕周胎儿的中毒性表皮坏死松解症

引用

世界核心医学期刊文摘（皮肤病学分册） 2005年第6期1卷 50-51页

作者： Lohmeier K. megahed m. schulte K.W. 潘敏 Dr.Department of General Paediatrics Heinrich-Heine-University Moorenstrasse 5 40225 Duesseldorf Germany

Toxic epidermal necrolysis (TEN) is very rare in the newborn period. So far, three cases of TEN in newborns have been reported worldwide. We report a premature infant of 27 weeks’ gestational age with TEN at 4 weeks of age. Sepsis treated by an antibiotic combination regimen preceding the TENwas a common feature of all four cases. In our patient, coagulase-negative staphylococci could be identified by blood culture, whereas the previously reported patients suffered from Klebsiella pneumoniae sepsis or Escherichia coli sepsis. Possibly, the uniform association with septic infection in the cases of TEN in the neonatal period might hint at a causal association, thus differentiating it from TEN in older children or adults.

关键词：表皮坏死松解新生儿期脓毒症克雷白杆菌肺炎食物疗法凝固酶大肠杆菌性

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

PEBAX^(Tm)-Silanized Al_(2)O_(3) Composite,Synthesis and Characterization

引用

Open Journal of Polymer Chemistry 2012年第2期2卷 63-69页

作者： José Cirilo Ignacio Lara-Estévez Luís Antônio Sanchez de Almeida Prado Karl schulte Emilio Bucio Departamento de Química de Radiaciones y Radioquímica Instituto de Ciencias NuclearesUniversidad Nacional Autónoma de MéxicoCircuito ExteriorCiudad UniversitariaMéxico CityMéxico Institut für Kunststoffe und Verbundwerkstoffe Technische Universität Hamburg-HarburgHamburgGermany

Alumina nanoparticles were dispersed in poly(amide 12-b-tetramethylene oxide) copolymer through extrusion. The alumina particles were functionalized with 3-(2 trimethoxysilylethyl) cyclohexene oxide. The following PEBAX Tm/ Al2O 3 proportions were prepared: 0.1, 1.0, 5.0, and 10.0% w/w. The thermal stabiity of the nanocomposites was evalu- ated by thermograviemtric analysis under N2 and was comparable to the neat PEBAXTm polymer. The thermo-oxidative degradation of the polymeric matrix by oxygen was strongly hindered by the functionalized alumina. The rule of mixture would predict that the thermal degradation should be strongly dominated by PEBAXTm matrix. Therefore, the physical mixture of PEBAXTm and silanized alumina should be almost as stable as pure PEBAXTm. However, the experimental results suggest that the nanocomposites are more stable than the mixture of their components. This stabilization effect is evident in the temperature range between 300?C and 400?C, in which the degradation of the PA12 block takes place.

关键词： Nanocomposites Alumina Functionalization Thermoplastic Elastomers Thermal Behavior

来源：

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

Non-Axillary Sentinel Node in Breast *** we Staging Correctly?A multicenter Study

引用

Advances in Breast Cancer Research 2014年第4期3卷 124-130页

作者： Javier Encinas méndez Joan Francesc Julián Ibánez manel Cremades Pérez Jordi Navinés Josep Verge schulte-Eversum manel Fraile López-Amor manel Armengol Carrasco Consorci Sanitari Garraf.H.Sant Camil Sant Pere de RibesSpain Hospital Germans Trias i Pujol BadalonaSpain H.U.Vall d’Hebron BarcelonaSpain

Purpose: The study of the sentinel lymph node is the best technique to stage, have a prognosis and decide the adequate treatment in breast cancer. The usual technique implies studding the axillary lymph node. Our work tries to identify affected nodes in other regions apart from the axilla and its possible impact in staging and treatment. methods: The sentinel lymph node technique was performed on 1660 patients included in an observational and multicentric study designed to observe the presence of metastatic cells in axillary and non-axillary lymph nodes. Results: In 19% of the patients the sentinel lymph node was detected in non-axillary regions. In these cases metastatic cells were more frequent which could suppose a change in the stage and/or treatment. As protective factor against non-axillary nodes involvement we found the localization of the cancer in external quadrants while youth and injecting the tracer inside the tumor were found to be risk factors. Conclusions: Detecting and studding non-axillary lymph nodes in breast cancer leads to a more precise staging of the disease which could imply a change in the optimal treatment.

关键词： Breast Neoplasms Sentinel Lymph Node Biopsy Neoplasm Staging

来源：

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

发展个人护理湿巾，满足未来需求

引用

生活用纸 2013年第11期13卷 13-15页

作者： Colleen m. Rocafort Sam Naggiar Anja Stork Petra schulte Ashish Taneja

湿巾市场继续增长，婴儿湿巾将持续畅销。根据欧睿信息公司的数据，在新兴市场的推动下，预计从2010—2015年．全球婴儿湿巾的年均复合增长率将达到35％。到2015年，通用型湿巾和私处清洁湿巾将有较高的增长率。预计年均复合增长率分别... 详细信息

湿巾市场继续增长，婴儿湿巾将持续畅销。根据欧睿信息公司的数据，在新兴市场的推动下，预计从2010—2015年．全球婴儿湿巾的年均复合增长率将达到35％。到2015年，通用型湿巾和私处清洁湿巾将有较高的增长率。预计年均复合增长率分别约为46％和6．5％。零售商品牌湿巾的市场份额也将有显著增长。

关键词：湿巾个人护理市场份额增长率通用型零售商婴儿复合

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：