检索结果-南通市图书馆

Morphometric and meristic variation in two congeneric archer fishes Toxotes chatareus (Hamilton 1822) and Toxotes jaculatrix (Pallas 1767) inhabiting Malaysian coastal waters

引用

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第11期11卷 871-879页

作者： k.D.SIMON Y.BAkAR S.E.TEMPLE A.G.MAZLAN Marine Science Programme School of Environmental and Natural Resource SciencesFaculty of Science and TechnologyUniversiti Kebangsaan Malaysia Biology Programme School of Biological SciencesUniversiti Kebangsaan Malaysia School of Biomedical Sciences University of Queensland Marine Ecosystem Research Centre Faculty of Science and TechnologyUniversiti Kebangsaan Malaysia

A simple yet useful criterion based on external markings and/or number of dorsal spines is currently used to differentiate two congeneric archer fish species Toxotes chatareus and Toxotes *** we investigate other morphometric and meristic characters that can also be used to differentiate these two *** component and/or discriminant functions revealed that meristic characters were highly correlated with pectoral fin ray count,number of lateral line scales,as well as number of anal fin *** results indicate that *** can be distinguished from *** by having a greater number of lateral line scales,a lower number of pectoral fin rays,and a higher number of anal fin *** contrast,morphometric discriminant analyses gave relatively low distinction:76.1% of fish were ascribed to the correct species *** observed morphometric differences came from the dorsal and anal spines lengths,with *** having shorter dorsal and longer anal spines than ***,meristic traits were more useful than morphometrics in differentiating the two species;nevertheless,meristics and morphometrics together provide information about the morphological differentiation between these two closely related archer fishes.

关键词： Archer fish Toxotes chatareus Toxotes jaculatrix Species identification Multivariate analysis

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

Topological graph-based analysis of solid-state ion migration

引用

npj Computational Materials 2023年第1期9卷 1337-1341页

作者： Jimmy-Xuan Shen Haoming Howard Li Ann Rutt Matthew k.Horton kristin A.Persson Materials Science Division Lawrence Livermore National LaboratoryLivermoreCAUSA Materials Sciences Division Lawrence Berkeley National LaboratoryBerkeleyUSA Department of Material Science and Engineering University of CaliforniaBerkeleyCAUSA Molecular Foundry Lawrence Berkeley National LaboratoryBerkeleyUSA

To accelerate the development of ion conducting materials,we present a general graph-theoretic analysis framework for ion migration in any crystalline *** nodes of the graph represent metastable sites of the migrating ion and the edges represent discrete migration events between adjacent *** from a collection of possible metastable migration sites,the framework assigns a weight to the edges by calculating the individual migration energy barriers between those *** pathways in the periodic simulation cell corresponding to macroscopic ion migration are identified by searching for the lowest-cost cycle in the periodic migration *** exemplify the utility of the framework,we present the automatic analyses of Li migration in different polymorphs of VO(PO_(4)),with the resulting identification of two distinct crystal structures with simple migration pathways demonstrating overall<300 meV migration barriers.

关键词： analysis migration metastable

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

Maintain Optimal Configurations for Large Configurable Systems Using Multi-Objective Optimization

引用

Computers, Materials & Continua 2022年第11期73卷 4407-4422页

作者： Muhammad Abid Jamil Deafallah Alsadie Mohamed k.Nour Normi Sham Awang Abu Bakar Department of Computer Science Umm Al-Qura UniversityMakkahSaudi Arabia kulliyyah of Information and Communication Technology International Islamic UniversityMalaysia

To improve the maintenance and quality of software product lines,efficient configurations techniques have been ***,due to the complexity of derived and configured products in a product line,the configuration process of the software product line(SPL)becomes timeconsuming and *** product line consists of a various number of feature models that need to be *** different approaches have been presented by Search-based software engineering(SBSE)to resolve the software engineering issues into computational solutions using some metaheuristic ***,multiobjective evolutionary algorithms help to optimize the configuration process of *** this paper,different multi-objective Evolutionary Algorithms like Non-Dominated Sorting Genetic algorithms II(NSGA-II)and NSGA-III and Indicator based Evolutionary Algorithm(IBEA)are applied to different feature models to generate optimal results for large *** proposed approach is also used to generate the optimized test suites with the help of different multi-objective Evolutionary Algorithms(MOEAs).

关键词： Software product line search-based software engineering metaheuristic multiobjective evolutionary algorithms feature model

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

Experimental study on the effect of micro-carbon additives in vegetable oils for aquifer thermal energy storage

引用

Clean Energy 2024年第2期8卷 48-59页

作者： Takashi Suzuki Mitsuhisa Ichiyanagi Emir Yilmaz Archie G.k.Maxwell Ekadewi Anggraini Handoyo Department of Engineering and Applied Sciences Sophia University7-1Kioi-choChiyoda-kuTokyo102-8554Japan Graduate School of Science and Technology Sophia University7-1Kioi-choChiyoda-kuTokyo102-8554Japan Department of Mechanical Engineering Petra Christian UniversitySiwalankerto 121-131Surabaya 60291Indonesia

Aquifer thermal energy storage is a versatile method for regulating building temperatures,utilizing groundwater as a medium for both summer cooling and winter *** has high thermal conductivity and specific heat but is corrosive,creating a mineral build-up that causes ***,its high freezing point presents operational *** oils emerge as a promising alternative,owing to their lower freezing *** light of environmental concerns,researchers are exploring vegetable oils as substitutes for petroleum-derived mineral *** paper is intended as an initial study using vegetable oils,*** and sunflower oil,as the heat-transfer medium in aquifer thermal energy *** experiments assess the heat-transfer coefficient of coconut,sunflower,mineral,and synthetic oils when exposed to the same heat *** study also evaluates the impact of introducing micro-carbon(graphite and charcoal)to the *** indicate that sunflower oil has the highest heat-transfer coefficient of 374.4 W/m^(2) k among the oils,making it suitable for aquifer thermal energy storage ***,augmenting sunflower oil with charcoal powder enhances its performance by increasing the heat-transfer coefficient to 474.9 W/m^(2) k,or a 27%*** contrast,coconut oil proves unsuitable for aquifer thermal energy storage deployment because of its low heat-transfer coefficient of 293.7 W/m^(2) *** heat-transfer coefficient of synthetic oil increases with graphite powder but decreases with charcoal powder introduction.

关键词： sunflower oil aquifer thermal energy storage charcoal graphite vegetable oil

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

Tight Focusing Properties of Radially Polarized Gaussian Beams with Pair of Vortices

引用

Chinese Physics Letters 2016年第12期33卷 73-76页

作者： *** k.B.Rajesh M.Udhayakumar Z.Jaroszewicz T.V.S.Pillai Department of Physics St.Xavier's Catholic College of EngineeringNagercoilIndia Department of Physics Chikkanna Government Arts College Department of Physical Optics Institute of Applied OpticsPolandand National Institute of Telecommunications Department of Physics University College of EngineeringNagercoilIndia

The tight focusing properties of a radially polarized Gaussian beam with a nested pair of vortices having a radial wave front distribution are investigated theoretically by the vector diffraction theory. The results show that the optical intensity in the focal region can be altered considerably by changing the location of the vortices nested in a radially polarized Gaussian beam. It is noted that focal evolution from one annular focal pattern to a highly confined focal spot in the transverse direction is observed corresponding to the change in the location of the optical vortices in the input plane. It is also observed that the generated focal hole or spot lead to a focal shift along the optical axis remarkably under proper radial phase modulation. Hence the proposed system may be applied to construct tunable optical traps for both high and low refractive index particles.

关键词： of is on in for Tight Focusing Properties of Radially Polarized Gaussian Beams with Pair of Vortices with

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

Impact of human disturbances on soil cyanobacteria diversity and distribution in suburban arid area of Marrakesh, Morocco

引用

Ecological Processes 2021年第1期10卷 563-578页

作者： Z.Hakkoum F.Minaoui M.Douma k.Mouhri M.Loudiki Laboratory of Water Biodiversity and Climate Change Phycology Biotechnology and Environmental Toxicology Research UnitFaculty of Sciences Semlalia MarrakeshCadi Ayyad UniversityAv.Prince My AbdellahP.O.Box 239040000 MarrakeshMorocco

Background:Cyanobacteria are among the first photoautotrophic component of soil microorganism communities which play a key ecological role in nutrient cycles and soil ***,the sustainability of these soil biodiversity ecosystem services is increasingly compromised,especially in urban and peri-urban areas where soils are heavily exploited and used for a wide range of human *** aim of this study is to assess the impact of different types of human disturbances on cyanobacteria diversity and distribution in suburban soils of *** and cyanobacteria sampling were carried out during two campaigns at six sites located along an anthropogenic gradient from the least urbanized suburbs of Marrakesh to the highly anthropized suburban *** the laboratory,soil physicochemical characteristics were *** morphological identification of cyanobacteria species was based both on microscopic observation and on soil cultures in solid and liquid Z8 ***:The results showed a total of 25 cyanobacteria taxa belonging to ten genera,four families,and two orders(Oscillatoriales 88%and Chroococcales 12%of taxa).Among the taxa identified,seven strains were isolated in soil culture in nutrient media and purified in monoalgal *** highest cyanobacterial diversity was recorded in irrigated soil with treated wastewater compared to the non-cultivated control *** Principal Component and Cluster Analysis,suburban soils were subdivided into three groups depending on the chemical properties and cyanobacteria *** diversity was significantly associated with the soil moisture,total organic carbon(TOC),PO_(4)^(-)P,NO_(3)^(-)N,and NH_(4)^(-)N ***:While diversity and microalgal biomass were significantly lower in the soils affected by municipal and mining solid wastes,the input of organic matter and nutrients from treated wastewater appears to be beneficial for the increasing of the biodiversity of soil cyan

关键词： Cyanobacteria Peri-urban soils Pollution Anthropogenic effects Moroccan drylands

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

Diversity and interaction of common bacterial blight disease-causing bacteria(Xanthomonas spp.) with Phaseolus vulgaris L.

引用

The Crop Journal 2019年第1期7卷 1-7页

作者： Joab k.Tugume Geoffrey Tusiime Allan Male Sekamate Robin Buruchara Clare Mugisha Mukankusi Makerere University Department of Agricultural Production International Centre for Tropical Agriculture (CIAT)/Pan African Bean Research Alliance (PABRA)

Common bacterial blight(CBB) is associated with common bean(Phaseolus vulgaris L.), an important grain legume for human consumption worldwide. The disease, caused by Xanthomonas spp. is spread mainly through seed. This paper focuses on the diversity of *** pv. phaseoli and X. fuscans subsp. fuscans and interactions between related bacteria and the bean host. Review has suggested that the diversity and taxonomic studies of these pathogens are not exhaustive, especially in areas where detailed molecular analysis has not been conducted and previous characterizations were based on phenotypic features and PCR-based techniques. Also, no study has confirmed differential pathogenicity on bean genotypes based on compatible versus incompatible reactions. However, isolates react differently to wild and domesticated bean sources of resistance in common bean genetic backgrounds. A systematic approach will be required to investigate global changes in gene expression among different sources of resistance in a common bean *** bacterial isolates that cause CBB should be functionally characterized using genotypes containing major quantitative trait loci(QTL) for CBB resistance. These studies will increase understanding of resistance and how it is manipulated by pathogens.

关键词： Xanthomonas axonopodis Interaction Gene expression Diversity

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

Copper Salt of 12-Tungstophosphoric Acid： An Efficient and Reusable Heteropoly Acid for the Click Chemistry

引用

Chinese Journal of Chemistry 2013年第4期31卷 534-538页

作者： k. V. Purnima D. Sreenu N. Bhasker k. Nagaiah N. Lingaiah B. V. Subba Reddy J. S. Yadav Division of Organic Chemistry Indian Institute of Chemical Technology Hyderabad 500 007 India Division oflnorganie and Physical Chemistry Indian Institute of Chemical Technology Hyderabad 500 007 India

Three components coupling of alkyl bromide, sodium azide and alkyne has been achieved using a catalytic amount of copper-exchanged phosphotungstic acid （Cu-TPA） in the presence of triethyl amine in DMF to afford substituted triazoles in good yields with high selectivity. Interestingly, the coupling of alkyl azide with alkyne pro- ceeds readily at room temperature to furnish 1,2,3-triazoles in excellent yields. The catalyst can be recovered and reused for three to four subsequent runs with a minimal decrease of activity. The use of copper modified heter- opolyacids makes this procedure simple, convenient and environmentally friendly.

关键词： Cu-exchanged heteropoly acids click reaction three-component reactions triazoles

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

X-ray Multiple Diffraction Topographic Imaging Technique For Growth History Study of Habit Modifying Impurity Doped Crystals

引用

Chemical Research in Chinese Universities 2004年第4期20卷 411-416页

作者： LAI X. MA C. k. J. Robert M. C. Miller Institute of Particle Science and Engineering Department of Chemical Engineering University of LeedsInstitute of Particle Science and Engineering Department of Chemical Engineering University of LeedsInstitute of Particle Science and Engineering Department of Chemical Engineering University of LeedsCCLRC Daresbury Laboratory Daresbury Leeds LS2 9JT UKLeeds LS2 9JT UKLeeds LS2 9JT UKWarrington Cheshire WA4 4AD UK

A novel crystal characterization instrument has been built up in which a combination of X-ray multiple diffraction and X-ray topography is applied to enabling the cross-correlation between micro-crystallographic symmetry and its spatial dependence in relation to lattice defects. This facility is used to examine, in a self-consistent manner, growth sector-dependant changes to both the crystallographic structure and the lattice defects associated with the action of habit-modifying additives in a number of representative crystal growth systems. In addition, the new instrument can be used to probe micro-crystallographic aspects(such as distortion to crystal symmetry) and relate these in a spatially resolved manner to the crystal defect structure in crystals doped with known habit modifiers.

关键词： X-ray diffraction X-ray multiple diffraction X-ray topography Habit modification Crystal growth Growth defects

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

Slip flow of MHD Casson fluid in an inclined channel with variable transport properties

引用

Communications in Theoretical Physics 2020年第9期72卷 21-38页

作者： k V Prasad Hanumesh Vaidya C Rajashekhar Sami Ullah khan G Manjunatha J U Viharika Department of Mathematics Vijayanagara Sri Krishnadevaraya UniversityVinayaka NagarBallari-583105KarnatakaIndia Bhaskaracharya Study Chair Karnataka State Akkamahadevi Women's UniversityVijayapuraKarnatakaIndia Department of Mathematics COMSTAS University IslamabadSahiwal Campus 54000Pakistan Department of Mathematics Manipal Institute of TechnologyManipal Academy of Higher EducationManipalKarnataka576104-India

Due to the instructive role of the peristaltic phenomenon in the human body, interests have been developed in recent years towards peristaltic transport with various thermo-physical *** current investigation reveals the effects of the magnetic field and variable transport properties on the peristaltic transport of a Casson fluid slip flow through an inclined *** coupled partial differential equations regulate the fluid flow. Through the perturbation method, the momentum and energy equations are solved for small values of variable viscosity and thermal conductivity, and the closed-form solution is obtained for mass transfer. The impact on physiological quantities of related parameters of interest is evaluated and discussed via graphs. The results obtained for the current flow represent some interesting behaviors which have applications in the biomedical field.

关键词： velocity slip thermal slip concentration slip variable viscosity yield stress

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

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：