检索结果-南通市图书馆

Atom-economic synthesis of an oligomeric P/N-containing fire retardant towards fire-retarding and mechanically robust polylactide biocomposites

引用

Journal of Materials Science & Technology 2023年第29期160卷 86-95页

作者： Jiabing Feng Yixia Lu Hongyan Xie Yan Zhang Siqi Huo Xiaohuan Liu matt flynn Zhiguang Xu Paulomi Burey Mark Lynch Hao Wang Pingan Song China-Australia Institute for Advanced Materials and Manufacturing Jiaxing UniversityJiaxing 314001China China National Textile and Apparel Council Key Laboratory of Flame Retardancy Finishing of Textile Materials Soochow UniversitySuzhou 215123China Laboratory of Polymer Materials and Engineering NingboTech UniversityNingbo 315100China Centre for Future Materials University of Southern QueenslandSpringfieldQLD 4300Australia College of Life Science Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhou 318000China School of Agriculture and Environmental Science University of Southern QueenslandSpringfieldQLD 4300Australia

Renewable and biodegradable polylactide (PLA) has excellent mechanical strength but is highly flammable which restricts its practical applications. Many phosphorus/nitrogen (P/N)-based flame retardants are ef- fective in PLA, but their high addition loading usually decreases the mechanical strength of the PLA bulk. For polyphosphoramides, despite high fire-retardant efficiency, their chemical synthesis often generates chemical wastes as byproducts. Herein, we report an atom-economic and highly efficient oligomeric P/N fire retardant (APN) prepared using a mild Michael addition polymerization with no byproducts. Using only 3 wt% APN, the resulting PLA exhibits desired fire retardancy including a UL-94 V-0 rating and a limiting oxygen index of 37.6%. Furthermore, the toughness of the fire-retardant PLA increases by 85% compared to pure PLA, with both tensile strength and thermal stability preserved. This work offers an atom-economic strategy for synthesizing highly efficient P/N fire retardants for use in the creation of fire-resistant PLA with robust mechanical properties.

关键词： Atom economy Fire retardant Polylactide Mechanical properties

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

Circles AND CYCLES

引用

China's Tibet 2016年第2期27卷 50-55页

作者： matt flynn

Coming to Tibet I came to Tibet in the normal way,that is,the normal way for many of the workers and students coming to Tibet:42hours on a train from Chengdu to ***,like many of the workers and students,I had a ticket... 详细信息

关键词：游记周期西藏硬式席位

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

PABONGKA And Perspective

引用

China's Tibet 2017年第4期28卷 48-51页

作者： matt flynn

The car wound its way up towards the Pabongka *** blue flowers burst forth from the bushes on either side of the *** was late spring in Lhasa,but summer could be felt creeping into the *** ahead the white walls of the temple complex were dazzling in the morning *** was one of those days in Lhasa when the sun shone so brightly it looked white,and I could hardly open my

关键词：复合体

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

Fitness Sharing Chaotic Particle Swarm Optimization (FSCPSO): A Metaheuristic Approach for Allocating Dynamic Virtual Machine (VM) in Fog Computing Architecture

引用

Computers, Materials & Continua 2024年第8期80卷 2557-2578页

作者： Prasanna Kumar Kannughatta Ranganna Siddesh Gaddadevara matt Chin-Ling Chen Ananda Babu Jayachandra Yong-Yuan Deng Department of Computer Science&Engineering Ramaiah Institute of TechnologyBangalore560054India Department of Artificial Intelligence&Data Science Ramaiah Institute of TechnologyBangalore560054India School of Information Engineering Changchun Sci-Tech UniversityChangchun130600China Department of Computer Science and Information Engineering Chaoyang University of TechnologyTaichung41349Taiwan Department of Information Science and Engineering Malnad College of EngineeringHassan573202India

In recent decades,fog computing has played a vital role in executing parallel computational tasks,specifically,scientific workflow *** cloud data centers,fog computing takes more time to run workflow ***,it is essential to develop effective models for Virtual Machine(VM)allocation and task scheduling in fog computing *** task scheduling,VM migration,and allocation,altogether optimize the use of computational resources across different fog *** process ensures that the tasks are executed with minimal energy consumption,which reduces the chances of resource *** this manuscript,the proposed framework comprises two phases:(i)effective task scheduling using a fractional selectivity approach and(ii)VM allocation by proposing an algorithm by the name of Fitness Sharing Chaotic Particle Swarm Optimization(FSCPSO).The proposed FSCPSO algorithm integrates the concepts of chaos theory and fitness sharing that effectively balance both global exploration and local *** balance enables the use of a wide range of solutions that leads to minimal total cost and makespan,in comparison to other traditional optimization *** FSCPSO algorithm’s performance is analyzed using six evaluation measures namely,Load Balancing Level(LBL),Average Resource Utilization(ARU),total cost,makespan,energy consumption,and response *** relation to the conventional optimization algorithms,the FSCPSO algorithm achieves a higher LBL of 39.12%,ARU of 58.15%,a minimal total cost of 1175,and a makespan of 85.87 ms,particularly when evaluated for 50 tasks.

关键词： Fog computing fractional selectivity approach particle swarm optimization algorithm task scheduling virtual machine allocation

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

Symptom presentation and evolution in the first 48 hours after injury are associated with return to play after concussion in elite Rugby Union

引用

Journal of Sport and Health Science 2024年第3期13卷 387-397页

作者： Ross Tucker matt Cross Keith Stokes Lindsay Starling Rosy Hyman Simon Kemp Stephen West Martin Raftery Eanna Falvey James Brown Institute of Sport and Exercise Medicine(ISEM) Department of ExerciseUniversity of StellenboschTygerberg 7505South Africa World Rugby Ltd. Dublin D02 AE93Ireland Premiership Rugby London SW1V 1PXUK Centre for Health and Injury and Illness Prevention in SportUniversity of BathClaverton Down BA27AYUK UK Collaborating Centre on Injury and Illness Prevention in Sport(UKCCIIS) University of BathClaverton Down BA27AYUK Rugby Football Union London TW27BAUK London School of Tropical Medicine London WC1E 7HTUK Sport Injury Prevention Research Centre Faculty of KinesiologyUniversity of CalgaryCalgary T2N 1N4Canada Department of Medicine School of Medicine and HealthUniversity College CorkCork T12 EC8PIreland Carnegie Applied Rugby Research(CARR)centre Carnegie School of SportLeeds Beckett UniversityLeeds LS63QSUK

Background:Return to play(RTP)in elite rugby is managed using a 6-stage graduated RTP protocol,which can result in clearance to play within 1 week of *** aimed to explore how symptom,cognitive,and balance presentation and evolution during concussion screens 2 h(head injury assessment(HIA2)and 48 h(HIA3)after injury were associated with time to RTP)to identify whether a more conservative graduated RTP may be ***:A retrospective cohort study was conducted in 380 concussed rugby players from elite men’s rugby over 3 consecutive *** were classified as shorter or longer returns,depending on whether RTP occurred within 7 days(allowing them to be considered to play the match 1 week after injury)or longer than 8 days,***,cognitive,and balance performance during screens was assessed relative to baseline(normal or abnormal)and to the preceding screen(improving or worsening).Associations between sub-test abnormalities and RTP time were explored using odds ratios(OR,longer ***).Median day absence was compared between players with abnormal or worsening results and those whose results were normal or ***:Abnormal symptom results during screens 2 h and 48 h after concussion were associated with longer return time(HIA2:OR=2.21,95%confidence interval(95%CI):1.39-3.50;HIA3:OR=3.30,95%CI:1.89-5.75).Worsening symptom number or severity from the time of injury to 2 h and 48 h post-injury was associated with longer return(HIA2:OR=2.49,95%CI:1.36-4.58;HIA3:OR=3.34,95%CI:1.10-10.15).Median days absence was greater in players with abnormal symptom results at both HIA2 and *** and balance performance were not associated with longer return and did not affect median days ***:Symptom presentation and evolution within 48 h of concussion were associated with longer RTP *** may guide a more conservative approach to RTP,while still adhering to individualized concussion management principles.

关键词： Brain injury Concussion management General return to play Medical management

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

中国手斧技术演化:新进展和未来展望

引用

Science Bulletin 2024年第14期69卷 2161-2165页

作者：李浩王社江 matt G.Lotter Robin Dennell Kathleen Kuman 陈发虎 State Key Laboratory of Tibetan Plateau Earth System Resources and Environment(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China Key Laboratory of Vertebrate Evolution and Human Origins Institute of Vertebrate Paleontology and PaleoanthropologyChinese Academy of SciencesBeijing 100044China Palaeo-Research Institute University of JohannesburgAuckland Park 2006South Africa Department of Archaeology University of ExeterExeter EX44QEUK School of Geography Archaeology and Environmental StudiesUniversity of the WitwatersrandJohannesburg WITS 2050South Africa

Handaxes are often regarded as the"tool-type-specimenoof the Acheulean techno-complex,not only because they are a very common artefact but because they contain rich technological,behavioral,and cognitive data that have been used to highlight trends in human evolution and lithic production *** this end,the handaxe is the earliest tool possessing consistent morphological features,in particular,the appearance of a symmetrical concept in handaxe shape when compared with other Acheulean large shaping tools(e.g.,cleavers),and their manufacture is widely regarded as a significant milestone in the evolution of lithic technology,indicating improvements in tool-making hominins’abilities for complex thought and cognition.

关键词：技术演化未来展望 earliest

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

Rare Case of Large Anterior Meningocele Associated with Uterine Didelphys

引用

Open Journal of Modern Neurosurgery 2024年第2期14卷 104-107页

作者： Joseph Maalouly matt Wilson Sanjay Adusumilli Vijidha Rajkumar Shanu Gambhir Department of Neurosurgery Norwest Private Hospital Bella Vista Australia Department of Obstetrics and Gynecology Norwest Private Hospital Bella Vista Australia Department of General Surgery Norwest Private Hospital Bella Vista Australia

We report a 27-year-old female who presented with abdominal distension, saddle anesthesia, and lower back pain. CT and MRI of the abdomen/spine were performed which showed a large anterior sacral meningocele occupying most of the pelvic and abdominal cavity and displacement of their respective contents. Anterior approach was chosen, uterine didelphys was identified and mobilized, meningocele identified and gentle drainage with subsequent resection of the cyst wall and watertight closure was achieved. Subsequent MRI demonstrated resolution of most the sacral meningocele. Patient symptoms improved and are doing well.

关键词： Sacral Agenesis Curarino Triad Large Meningocele

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

美联储9月降息板上钉钉科技巨头财报成市场焦点

引用

证券市场周刊 2024年第28期 24-25页

作者：马特·韦勒嘉盛集团

我们认为9月降息已经是板上钉钉.除了降息预期,驱动市场的关键还是业绩.展望2024年下半年,美联储的利率政策仍是各界关注的焦点.随着美联储在通胀下降的背景下将利率保持在5％左右的中间水平,实际利率实际上在上升.这导致了政策的实际收...

我们认为9月降息已经是板上钉钉.除了降息预期,驱动市场的关键还是业绩.展望2024年下半年,美联储的利率政策仍是各界关注的焦点.随着美联储在通胀下降的背景下将利率保持在5％左右的中间水平,实际利率实际上在上升.这导致了政策的实际收紧,而美联储可能希望避免这种情况.因此,我们认为9月降息已经是板上钉钉.

关键词：

来源：博看期刊评论

在线全文

博看期刊

学校读者我要写书评

暂无评论

A novel diagnostic gene region for distinguishing between two pest fruit flies:Bactrocera tryoni(Froggatt)and Bactrocera neohumeralis(Hardy)(Diptera:Tephritidae)

引用

Insect Science 2024年第4期31卷 1285-1295页

作者： Melissa L.Starkie Elizabeth V.Fowler Alexander M.Piper Xiaocheng Zhu Pauline Wyatt David Gopurenko matt N.Krosch Francesca Strutt Karen F.Armstrong Hamish Patrick Mark K.Schutze Mark J.Blacket Department of Agriculture and Fisheries BiosecurityBrisbaneQueenslandAustralia Agriculture Victoria AgriBioBundooraVictoriaAustralia Department of Primary Industries Wagga Wagga Agricultural InstituteWagga WaggaNew South WalesAustralia Forensic Services Group Queensland Police ServiceBrisbaneQueenslandAustralia Department of Pest-management and Conservation Lincoln UniversityLincolnNew Zealand Better Border Biosecurity(B3 B3nz.org.nz)LincolnNew Zealand

Bactrocera tryoni and Bactrocera neohumeralis are morphologically similar sibling pest fruit fly species that possess different biological attributes,geographic distributions,and host *** need to differentiate between the two species is critical for accurate pest status assessment,management,biosecurity,and maintenance of reference *** morphologically similar,adults may be separated based on subtle characters;however,some characters exhibit intraspecific variability,creating overlap between the two ***,there is currently no single molecular marker or rapid diagnostic assay that can reliably distinguish between *** and ***;therefore,ambiguous samples remain *** we report the first molecular marker that can consistently distinguish between *** and *** diagnostic region consists of two adjacent single nucleotide polymorphisms(SNPs)within the pangolin(pan)gene *** confirmed the genotypes of each species are consistent across their distributional range,then developed a tetra-primer amplification refractory mutation system(ARMS)PCR assay for rapid diagnosis of the *** assay utilizes four primers in multiplex,with two outer universal primers,and two internal primers:one designed to target two adjacent SNPs(AA)present in *** and the other targeting adjacent SNPs present in ***(GG).The assay accurately discriminates between the two species,but their SNP genotypes are shared with other nontarget tephritid fruit fly ***,this assay is most suited to adult diagnostics where species confirmation is necessary in determining ambiguous surveillance trap catches;maintaining pure colony lines;and in Sterile Insect Technique management responses.

关键词： ARMS-PCR colony molecular diagnostics pangolin tetra-primer

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

温暖的混凝土奥地利Jägerbau集团新总部大楼

引用

室内设计与装修 2024年第6期 42-45页

作者： [奥地利]Innauer matt Architekten Innauer matt Architekten

Jägerbau集团新总部大楼坐落于奥地利布鲁登茨。该建筑整合了邻近区域,并成为当地城市语境中的一个组成部分。建筑独特的红褐色体量塑造了适合的城市空间,呼应复杂环境的同时,也支持了Her-rengasse和Zürcherstrasse这2条街道沿线未来... 详细信息

Jägerbau集团新总部大楼坐落于奥地利布鲁登茨。该建筑整合了邻近区域,并成为当地城市语境中的一个组成部分。建筑独特的红褐色体量塑造了适合的城市空间,呼应复杂环境的同时,也支持了Her-rengasse和Zürcherstrasse这2条街道沿线未来的发展。此外,总部大楼还体现着它在卢登斯城市景观中的公共意义:这是一座开放、结构灵活的迷人建筑,它明确地向这个城市传达着Jägerbau集团作为一家科技公司的身份特征。

关键词：身份特征总部大楼城市景观邻近区域城市语境奥地利

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：