检索结果-南通市图书馆

Assessing the impact of booster vaccination on diphtheria transmission:Mathematical modeling and risk zone mapping

Infectious Disease Modelling 2024年第1期9卷 245-262页

作者： Ilham Saiful Fauzi Nuning Nuraini ade Maya Sari Imaniah Bazlina Wardani Delsi Taurustiati Purnama Magdalena Simanullang Bony Wiem Lestari Department of Accounting Politeknik Negeri MalangMalangIndonesia Department of Mathematics Faculty of Mathematics and Natural SciencesInstitut Teknologi BandungBandungIndonesia Center for Mathematical Modeling and Simulation Institut Teknologi BandungBandungIndonesia Study Program of Biology Education Faculty of Education and Teacher TrainingUIN Kiai Haji Achmad Siddiq JemberJemberIndonesia West Java Provincial Health Office West JavaIndonesia Department of Public Health Faculty of MedicineUniversitas PadjadjaranBandungIndonesia Department of Internal Medicine Radboud Institute for Health SciencesRadboud University Medical CentreNijmegenthe Netherlands

The COVID-19 pandemic caused significant disruptions in the healthcare system,affecting vaccinations and the management of diphtheria *** a consequence of these disruptions,numerous countries have experienced a resurgence or an increase in diphtheria *** Java province in Indonesia is identified as one of the high-risk areas for diphtheria,experiencing an upward trend in cases from 2021 to *** analyze the situation,we developed an SIR model,which integrated DPT and booster vaccinations to determine the basic reproduction number,an essential parameter for infectious *** spatial analysis of geo-referenced data,we identified hotspots and explained diffusion in diphtheria case *** calculation of R0 resulted in an R0=1.17,indicating the potential for a diphtheria outbreak in West *** control the increasing cases,one possible approach is to raise the booster vaccination coverage from the current 64.84%to 75.15%,as suggested by simulation ***,the spatial analysis revealed that hot spot clusters were present in the western,central,and southern regions,posing a high risk not only in densely populated areas but also in rural *** diffusion pattern of diphtheria clusters displayed an expansion-contagious *** the rising trend of diphtheria cases and their geographic distribution can offer crucial insights for government and health authorities to manage the number of diphtheria cases and make informed decisions regarding the best prevention and intervention strategies.

关键词： Diphtheria Vaccination Mathematical modeling SIR model Hot spot analysis

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

东方祥瑞话“龙”年

引用

环球飞行 2024年第2期 58-63页

作者： ade 不详

共赏新月之辉,同庆新岁之始。2024年是农历甲辰龙年,自年初起,大街小巷便洋溢着龙年的氛围寄寓着人们对新一年的美好期盼。龙,这一传说中的神圣生物,承载着人们对于风调雨顺的祈愿。作为十二生肖中唯一一种现实中不存在的动物,龙却是最... 详细信息

共赏新月之辉,同庆新岁之始。2024年是农历甲辰龙年,自年初起,大街小巷便洋溢着龙年的氛围寄寓着人们对新一年的美好期盼。龙,这一传说中的神圣生物,承载着人们对于风调雨顺的祈愿。作为十二生肖中唯一一种现实中不存在的动物,龙却是最受崇拜的神兽之一,被视为古代中国皇权的象征。《尔雅·翼·释龙》记载了龙的外形特征:“角似鹿、头似驼、眼似兔、颈似屋、麟似鱼、爪似鹰、掌似虎、耳似牛。”古代人认为龙是由八种动物的特点结合形成的物种,所以龙又被称为“鳞虫之长”。

关键词：外形特征十二生肖鳞虫

来源：

维普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

Characteristics of Biopellets Manufactured from Various Lignocellulosic Feedstocks as Alternative Renewable Energy Sources

引用

Journal of Renewable Materials 2024年第6期12卷 1103-1123页

作者： Anggara Ridho Putra Apri Heri Iswanto Arif Nuryawan Saptadi Darmawan ElvaraWindra Madyaratri Widya Fatriasari Lee Seng Hua Petar Antov Harisyah Manurung ade Pera Amydha Sudrajat Herawati Pendi Department of Forest Products Faculty of ForestryUniversitas Sumatera Utara.Kampus USU Padang BulanMedan20155Indonesia Research Center for Biomass and Bioproducts National Research and Innovation Agency(BRIN)Jl Raya Bogor KM 46 CibinongBogor16911Indonesia Department of Wood Industry Faculty of Applied SciencesUniversiti Teknologi MARA(UiTM)Cawangan Pahang Kampus JengkaShah Alam26400Malaysia Faculty of Forest Industry University of ForestrySofia1797Bulgaria

The increased valorization of renewable and cost-effective lignocellulosic feedstocks represents a viable,sustainable,and eco-friendly approach toward the production of biopellets as alternative energy *** aim of this research work was to investigate and evaluate the feasibility of using various lignocellulosic raw materials,i.e.,raru(Cotylelobium melanoxylon),mangrove(Rhizophora spp.),sengon(Paraserianthes falcataria),kemenyan toba(Styrax sumatrana),oil palm(Elaeis guineensis),manau rattan(Calamus manan),and belangke bamboo(Gigantochloa pruriens)for manufacturing biopellets with different particle *** raw materials used were tested for their moisture content,specific gravity,ash,cellulose,and lignin *** addition,thermal analyses,i.e.,calorific values,thermogravimetric analysis(TGA),and differential scanning calorimetry(DSC),were *** following properties of the biopellets produced were investigated:moisture content,volatile matter,ash content,fixed carbon,density,and thermal *** on an analysis of the raw materials,raru had the lowest moisture content(12%)and ash content(1.5%)and the highest specific gravity(1.2).Markedly,palm oil stem had the highestα-cellulose(55%)and lignin(37%)*** accordance with the SNI 8675:2018 standard requirements,biopellets with optimal properties(moisture content of 1.4%,ash content of 0.79%,density of 1.09 g/m^(3),calorific value of 4672 cal/g,and TGA residue of 13.9%),were manufactured from raru wood.

关键词： Biomass biopellet renewable energy particle size

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

Digital earth applications in the twenty-first century

引用

International Journal of Digital Earth 2014年第7期7卷 511-515页

作者： Rolf ade By Yola Georgiadou Faculty of Geo-Information Science and Earth Observation(ITC) University of TwenteEnschedeThe Netherlands

In these early years of the twenty-first century,we must look at how the truly cross-cutting information technology supports other innovations,and how it will funda-mentally change the information positions of government,private sector and the scientific domain as well as the *** those positions,location will be a prominent linking *** classical top-down system architectures of information exchange will be diluted by peer-to-peer and bottom-up channels,forcing us to rethink their *** should not only focus on better architectures,but need to attend to a different economy of information exchange,in which the‘client’is not only the information sink,but has become an important source as *** laws of this rising‘infoconomy’have yet to be settled *** special issue on‘Digital Earth Applications:Technological design and organizational strategies’brings together a number of papers that shed light on this future information ecosystem in which location-specific information will be exchanged between *** introduction presents a framework that combines geoinformation streams and organisations brokering between government,science,private sector and *** novel framework helps us improve the appreciation of those papers.

关键词： geoinformation governance information architecture digital earth

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

家禽红螨(鸡皮刺螨)侵染期间蛋鸡的生产损失

引用

养禽与禽病防治 2024年第10期 25-30页

作者： Nathalie Sleeckx Stefaan Van Gorp RikKoopman ine Kempen Kristof Van Hoye KrisDe Baere Johan Zoonsl Peter De Herdt 刘红(校) Experimental Poultry Centre-Province of Antwerp GeelBelgium MSD Animal Health Belgium BrusselsBelgium MSD Animal Health International BoxmeerNetherlands 默沙东动物保健品(上海)有限公司

本观察在一家禽研究中心进行的。共30568只蛋鸡,分48个单元饲养。富集型鸡笼和大笼散养系统养殖模式,48个单元中的32个单元被家禽红螨(PRM)自然侵染。52周龄时,所有母鸡都给予氟雷拉纳饮水给药。给药后,未观察到红螨的存在。由于所有禽... 详细信息

本观察在一家禽研究中心进行的。共30568只蛋鸡,分48个单元饲养。富集型鸡笼和大笼散养系统养殖模式,48个单元中的32个单元被家禽红螨(PRM)自然侵染。52周龄时,所有母鸡都给予氟雷拉纳饮水给药。给药后,未观察到红螨的存在。由于所有禽类日龄相同,并且所有48个单元的鸡群的日产蛋数据均有记录,这就提供了一个独特的机会来研究PRM对家禽生产成绩的影响。通过统计学方法,将肉眼未见红螨的单元和不同感染压力的单元鸡群的用药前后生产数据的变化情况进行了比较,生产标准曲线由育种公司提供作为参考。结果表明,与未被红螨侵染的对照组相比,本研究中1种或2种养殖模式下,受红螨重度侵染的母鸡,其给药后产蛋率、蛋重、产蛋总量、一级蛋比例、采食量和体重均显著增加。这些数据证实,PRM侵染会影响蛋鸡养殖场的主要盈利指标以及母鸡的健康状况。

关键词：皮刺螨属螨虫家禽母鸡生产成绩产蛋氟雷拉纳

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

Approximate analytical solution of the Dirac equation with q-deformed hyperbolic Poschl–Teller potential and trigonometric Scarf II non-central potential

引用

Chinese Physics B 2015年第3期24卷 48-54页

作者： ade Kurniawan A.Suparmi C.Cari Physics Department Sebelas Maret University

An approximate solution of the Dirac equation for a spin-1/2 particle under the influence of q-deformed hyperbolic P ¨oschl–Teller potential combined with trigonometric Scarf II non-central potential is studied analytically. It is assumed that the scalar potential equals the vector potential in order to obtain analytical solutions. Both radial and angular parts of the Dirac equation are solved using the Nikiforov–Uvarov method. A relativistic energy spectrum and the relation between quantum numbers can be obtained using this method. Several quantum wave functions corresponding to several states are also presented in terms of the Jacobi Polynomials.

关键词： Dirac equation q-deformed hyperbolic function Poschl–Teller potential trigonometric Scarf II potential

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

Effects of reduction on the catalytic performance of limonite ore

引用

Journal of Energy Chemistry 2018年第5期27卷 1489-1495页

作者： Keisuke Abe ade Kurniawan Takahiro Nomura Tomohiro Akiyama Graduate school of Engineering Hokkaido University Sapporo 060-8628 Japan Center for Advanced Research of Energy and Materials Hokkaido University Sapporo 060-8628 Japan

The catalytic performance of Ni-containing limonite ore in the dry reforming reaction of methane （CH_4＋CO_2→2H_2＋2CO） was determined before and after hydrogen reduction, and under a flow of hydrogen. After hydrogen reduction, the limonite ore exhibited higher catalytic performance, because of the formation of Fe-Ni. However, the Fe in Fe-Ni was readily oxidized by the input CO_2 gas. resulting in a rapid decrease in the catalytic performance of limonite ore. The performance de- crease was due to a decrease in the Ni surface area; Ni could not dissolve in iron oxides and this caused segregation in the iron oxides. When the reaction was conducted under a hydrogen flow, the Fe-Ni was formed and maintained. Ni was highly dispersed in the Fe-Ni phase, resulting in greater surface area of Ni and higher conversion rate of CH_4 and CO_2. The catalytic performance of the limonite ore was inferior to the Ni/Al_2O_3 catalyst because the effect of catalyst support was small, however, the limonite ore was more stable during catalytic use and much cheaper than the Ni/Al_2O_3.

关键词： Limonite Dry reforming Fe-Ni Catalyst

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

携带线粒体tRNA^(Met)4435A>G和核基因YARS2突变的原发性高血压家系遗传学分析

引用

浙江大学学报（医学版） 2024年第2期53卷 184-193页

作者：郭美丽贺云帆陈阿德庄载受潘孝勇管敏鑫苍南县人民医院检验科浙江温州325800 浙江大学遗传学研究所浙江省遗传缺陷与发育障碍研究重点实验室浙江杭州310058

目的:探讨m.4435A>G和YARS2 c.572G>T(p.G191V)突变在原发性高血压发生发展中的作用。方法:分析前期收集的高血压患者的线粒体基因组及外显子测序数据,对一例携带m.4435A>G和YARS2 p.G191V突变的原发性高血压患者的家系开展临床资料采... 详细信息

目的:探讨m.4435A>G和YARS2 c.572G>T(p.G191V)突变在原发性高血压发生发展中的作用。方法:分析前期收集的高血压患者的线粒体基因组及外显子测序数据,对一例携带m.4435A>G和YARS2 p.G191V突变的原发性高血压患者的家系开展临床资料采集及分子遗传学检测,收集外周静脉血并构建永生化淋巴细胞系进行线粒体转移RNA(tRNA)、线粒体蛋白质、腺苷三磷酸(ATP)、线粒体膜电位(MMP)和细胞内活性氧检测。结果:线粒体全基因组测序结果显示,该家系中母系成员均携带高度保守的m.4435A>G突变,该突变影响线粒体tRNA的二级结构和折叠自由能并改变其稳定性,预测其将影响反密码子环结构。与对照组比较,携带m.4435A>G和YARS2 p.G191V突变的细胞株相关线粒体tRNA稳态水平、部分线粒体蛋白表达量、ATP产量和MMP水平下降,且活性氧水平升高,差异均有统计学意义(均PG引起的线粒体翻译及线粒体功能改变,进一步导致细胞功能障碍,表明在本家系中YARS2 p.G191V与m.4435A>G突变存在协同作用,共同参与原发性高血压的发生发展。

关键词：原发性高血压线粒体DNA 基因突变呼吸链线粒体功能障碍母系遗传

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

Determinants of Online Buying Behaviour of Social Media Users in Cameroon

引用

Journalism and Mass Communication 2024年第2期14卷 112-139页

作者： Kelly E.ade Stephen N.Ndode Kingsley L.Ngange University of Buea BueaCameroon

Online shopping in Cameroon is growing rapidly and gaining considerable *** phenomenon is relatively new as compared to the traditional brick-and-mortar store(serving customers face-to-face in a building rather than online).As the world faces digital transformations,businesses in Cameroon are seeking new ways to reach their customers and create favourable environments to effectively carryout online *** study examines the factors that affect consumer online buying behaviour in *** theories guided this investigation:the Technology Acceptance Model(Davis,1989),Diffusion of Innovations Theory(Rogers,1995),and Uses and Gratifications Theory(Katz&Blumler,1974).The study focuses on students of the University of Buea who carry out online *** sampling is used,and data are collected from 365 respondents through a questionnaire with open and closed ended *** of data is done with the use of the Statistical Package for Social Scientists(SPSS)Version 21 to determine the types of products consumers buy online;the degree to which consumer trust and satisfaction affect consumer loyalty;and the specific social,economic,and market factors that affect online buying *** indicate that:Consumers mostly buy fashion items(74.3%),electronics(44.7%),cosmetics(37.3%),and house equipment(34%)*** will repeat purchase from a marketer if they trust and are satisfied with the product and service quality(81.1%);hence,they will also encourage others to *** they are dissatisfied,they will not repeat purchase from the online ***(76.1%),attractive pricing/discount(71.7%),product quality(71%),service quality(64.1%),convenience(72.3%),available income/money(49.6%),word of mouth recommendation(41.9%),and personal motivation(62.7%)constitute the major factors that affect consumer online buying *** of the hypotheses testing show that:H1=Consumers buy more of fashion items online(X^(2)=9.950;

关键词： online shopping consumer buying behaviour online trust and satisfaction technology Cameroon

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

Black phosphorus nanoflakes as morphology modifier for efficient fullerene-free organic solar cells with high fill-factor and better morphological stability

引用

Nano Research 2019年第4期12卷 777-783页

作者： Weitao Yang Long Ye Fenfa Yao Chuanhong Jin Harald ade Hongzheng Chen State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization& Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China Department of Physics Organic and Carbon Electronics Laboratory (ORaCEL) North Carolina State University Raleigh NC 27695 USA State Key Laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang University Hangzhou 310027 China

Morphology of the donor:acceptor blend plays a critical role in the photovoltaic performance of the organic solar cells (OSCs).Herein,liquid-phase-exfoliated black phosphorus nanoflakes (BPNFs),for their outstanding electronic property and good compatibility to solution process,were applied to fullerene-free OSCs as morphology *** by X-ray scattering measurements,the PTB7-Th:IEICO-4F blends incorporated with BPNFs exhibit more ordered π-π stacking and promoted domain purity,contributing to lower charge transport resistance and suppressed charge recombination within the bulk heterojunction (BHJ).As a result,a high fill factor (FF) of 0.73 and a best power conversion efficiency (PCE) of 12.2% were obtained for fullerene-free OSCs based on PTB7-Th:IEICO-4F blends incorporating with BPNFs,which is among the highest FF of the as-cast fullerene-free OSCs with PCE over 12%.More importantly,the embedded BPNFs help to improve the morphological stability of the devices probably by retarding the phase mixing in the BHJ during the aging ***,analogous enhancements were observed in another fullerene-free OSCs based on PBDB-T:*** a word,this work provides a new strategy of using two-dimentional nanoflakes as facile and universal morphology modifier for efficient fullerene-free OSCs.

关键词： fullerene-free organic solar cells black phosphorus nanoflakes morphology tuning device stability

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：