检索结果-南通市图书馆

Improving photochemical indicators for attributing ozone sensitivities in source apportionment analysis

Journal of Environmental Sciences 2024年第9期143卷 235-246页

作者： Xiaohui Du Wei Tang Zhongzhi Zhang Yang Yu Yang Li Ling Huang greg Yarwood Fan Meng Atmospheric Environment Institute Chinese Research Academy of Environmental SciencesBeijing 100012China College of Water Sciences Beijing Normal UniversityBeijing 100857China Asia Center for Air Pollution Research United Nations Environment Programme Asia and the Pacific OfficeNishi-kuNiigata-shi 9502144Japan School of Environmental and Chemical Engineering Shanghai UniversityShanghai 200444China Ramboll NovatoCalifornia 94945USA

Comprehensive Air Quality Model with extensions(CAMx)-Decoupled Direct Method(DDM)simulations of first-order ozone(O_(3))sensitivity to nitrogen oxides(NO_(x))and volatile organic compounds(VOCs)emissions were performed and combined with modelled P_(H_(2)O_(2))/P_(HNO_(3))ratios to obtain a range of thresholds for determining O_(3)-sensitivity regimes for different areas of China.Utilising the new threshold ranges for photochemical indicators,the method for determining O_(3)formation in the Ozone Source Apportionment Technology(OSAT)module within CAMx was improved by a dynamically varied threshold of P_(H_(2)O_(2))/P_(HNO_(3))ratio.The O_(3)concentration contributions in the newly added transition regime were apportioned to NO_(x)and VOCs emissions in proportion to the relationship between the P_(H_(2)O_(2))/P_(HNO_(3))ratio and first-order O_(3)sensitivity.The source contributions of O_(3)concentrations from different emission sectors from June to September 2019 were compared using the original and improved CAMx-OSAT.The results showed that the O_(3)concentration contributions changed significantly in the NO_(x)-limited regime,with a maximum decrease of 21.89%,while the contributions increased by up to 7.57%in the VOC-limited regime,and were within 15μg/m^(3)in the transition regime.The modified OSAT module enabled a more sophisticated attribution of O_(3)to precursor emissions and may have far-reaching implications for informing O_(3)pollution control policy.

关键词： O_(3) modeling O_(3)-sensitivity regimes Ozone source apportionment technology Photochemical indicators

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

Surgical management of the diabetic foot:The current evidence

引用

World Journal of Orthopedics 2024年第5期15卷 404-417页

作者： Richard Henry Randall Roberts Gareth Rhys Davies-Jones James Brock Vaishnav Satheesh greg AJ Robertson Department of Trauma and Orthopaedics Wrexham Maelor HospitalWrexham LL137TDUnited Kingdom Department of Trauma and Orthopaedics The Robert Jones and Agnes Hunt Orthopaedic HospitalOswestry SY107AGUnited Kingdom

The prevalence of diabetes mellitus and its associated complications,particularly diabetic foot pathologies,poses significant healthcare challenges and economic burdens globally.This review synthesises current evidence on the surgical management of the diabetic foot,focusing on the interplay between neuropathy,ischemia,and infection that commonly culminates in ulcers,infections,and,in severe cases,amputations.The escalating incidence of diabetes mellitus underscores the urgency for effective management strategies,as diabetic foot complications are a leading cause of hospital admissions among diabetic patients,significantly impacting morbidity and mortality rates.This review explores the pathophysiological mechanisms underlying diabetic foot complications and further examines diabetic foot ulcers,infections,and skeletal pathologies such as Charcot arthropathy,emphasising the critical role of early diagnosis,comprehensive management strategies,and interdisciplinary care in mitigating adverse outcomes.In addressing surgical interventions,this review evaluates conservative surgeries,amputations,and reconstructive procedures,highlighting the importance of tailored approaches based on individual patient profiles and the specific characteristics of foot pathologies.The integration of advanced diagnostic tools,novel surgical techniques,and postoperative care,including offloading and infection control,are discussed in the context of optimising healing and preserving limb function.

关键词： Diabetes Diabetic foot Charcot Osteomyelitis Amputation Diabetic foot attack Conservative surgery

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

青少年抑郁个体化识别与干预的三级框架

引用

Science Bulletin 2024年第7期69卷 867-871页

作者：周媛陈旭古若雷项玉涛 greg Hajcak 王刚 Beijing Key Laboratory of Mental Disorders National Clinical Research Center for Mental Disorders&National Center for Mental DisordersBeijing Anding HospitalCapital Medical UniversityBeijing 100088China CAS Key Laboratory of Behavioral Science Institute of PsychologyBeijing 100101China Department of Psychology University of Chinese Academy of SciencesBeijing 100049China Unit of Psychiatry Department of Public Health and Medicinal Administration&Institute of Translational MedicineFaculty of Health SciencesUniversity of MacaoMacao 999078China Centre for Cognitive and Brain Sciences University of MacaoMacao 999078China School of Education and Counseling Psychology Santa Clara UniversitySanta Clara CA 95053USA Advanced Innovation Center for Human Brain Protection Capital Medical UniversityBeijing 100069China

Depression in adolescents is a significant public health challenge with a high prevalence and negative outcomes.In the United States,the lifetime and 12-month prevalence rates of major depressive disorder(MDD)among 13-to 18-year-olds were 11.0%and 7.5%,respectively,prior to COVID-19.The COVID-19pandemic has further exacerbated the global trend of increasing rates of adolescent depression.

关键词： prevalence adolescent lifetime

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

青少年抑郁个体化识别与干预的三级框架（英文）

引用

Science Bulletin 2024年第7期 867-871页

作者：周媛陈旭古若雷项玉涛 greg Hajcak 王刚 Beijing Key Laboratory of Mental Disorders National Clinical Research Center for Mental Disorders & National Center for Mental Disorders Beijing Anding Hospital Capital Medical University CAS Key Laboratory of Behavioral Science Institute of Psychology Department of Psychology University of Chinese Academy of Sciences Unit of Psychiatry Department of Public Health and Medicinal Administration & Institute of Translational Medicine Faculty of Health Sciences University of Macau Centre for Cognitive and Brain Sciences University of Macau School of Education and Counseling Psychology Santa Clara University Advanced Innovation Center for Human Brain Protection Capital Medical University

Depression in adolescents is a significant public health challenge with a high prevalence and negative outcomes. In the United States, the lifetime and 12-month prevalence rates of major depressive disorder(MDD) among 13-to 18-year-olds were 11.0% and 7.5%, respectively, prior to COVID-19. The COVID-19pandemic has further exacerbated the global trend of increasing rates of adolescent depression,

关键词：

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Global spatio-temporally harmonised datasets for producing high-resolution gridded population distribution datasets

引用

Big Earth Data 2019年第2期3卷 108-139页

作者： Christopher T.Lloyd Heather Chamberlain David Kerr Greg Yetman Linda Pistolesi Forrest R.Stevens Andrea E.Gaughan Jeremiah J.Nieves Graeme Hornby Kytt MacManus Parmanand Sinha Maksym Bondarenko Alessandro Sorichetta Andrew J.Tatem WorldPop School of Geography and Environmental ScienceUniversity of SouthamptonSouthamptonUK Flowminder Foundation StockholmSweden Center for International Earth Science Information Network(CIESIN) Columbia UniversityPalisadesNYUSA Department of Geography and Geosciences University of LouisvilleLouisvilleKYUSA GeoData University of SouthamptonSouthamptonUK

Multi-temporal,globally consistent,high-resolution human population datasets provide consistent and comparable population distributions in support of mapping sub-national heterogeneities in health,wealth,and resource access,and monitoring change in these over time.The production of more reliable and spatially detailed population datasets is increasingly necessary due to the importance of improving metrics at sub-national and multitemporal scales.This is in support of measurement and monitoring of UN Sustainable Development Goals and related agendas.In response to these agendas,a method has been developed to assemble and harmonise a unique,open access,archive of geospatial datasets.Datasets are provided as global,annual time series,where pertinent at the timescale of population analyses and where data is available,for use in the construction of population distribution layers.The archive includes sub-national census-based population estimates,matched to a geospatial layer denoting administrative unit boundaries,and a number of co-registered gridded geospatial factors that correlate strongly with population presence and density.Here,we describe these harmonised datasets and their limitations,along with the production workflow.Further,we demonstrate applications of the archive by producing multi-temporal gridded population outputs for Africa and using these to derive health and development metrics.The geospatial archive is available at https://***/10.5258/SOTON/WP00650.

关键词： Human population subnational global spatial dataset multi-temporal

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

磁体升级助力fMRI探测神经元簇

引用

科技纵览 2024年第3期 12-13页

作者： greg Uyeno 不详

神经科学正在向高清晰度发展。研究人员实现了一系列技术改进,极大地提高了功能性磁共振成像仪器(fMR)的空间分辨率。得益于这种技术进展,fMRI成像体素(3D像素)的每边长不到0.5毫米。这些精细粒度的体素突破了人脑结构的一个相对重要的... 详细信息

神经科学正在向高清晰度发展。研究人员实现了一系列技术改进,极大地提高了功能性磁共振成像仪器(fMR)的空间分辨率。得益于这种技术进展,fMRI成像体素(3D像素)的每边长不到0.5毫米。这些精细粒度的体素突破了人脑结构的一个相对重要的阈值,可大致达到神经元功能簇的级别。

关键词：功能性磁共振成像神经元功能神经科学体素空间分辨率高清晰度 fMRI

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

匈牙利佩奇大学与北京林业大学的环境设计类教育比较分析及启示

引用

中国林业教育 2024年第1期42卷 39-45页

作者：赵大鹏 Hutter Akos greg Andras 北京林业大学艺术设计学院北京100083 佩奇大学工程与信息技术学院匈牙利佩奇7624

佩奇大学是匈牙利颇具影响力的高校,在环境设计类教育领域经验丰富、成果突出。其建筑系与北京林业大学环境设计系在学科定位、办学和发展理念等层面存在诸多相似之处,有一定的可比性。以佩奇大学建筑系教育项目和北京林业大学环境设计... 详细信息

佩奇大学是匈牙利颇具影响力的高校,在环境设计类教育领域经验丰富、成果突出。其建筑系与北京林业大学环境设计系在学科定位、办学和发展理念等层面存在诸多相似之处,有一定的可比性。以佩奇大学建筑系教育项目和北京林业大学环境设计专业为研究对象,对环境设计类教育进行比较分析发现:①在教学理念方面,前者重点强调文化传承和专业实践;后者从生态、可持续的视角切入,重点关注绿色设计、生态宜居等,强调以绿色生态理念为主、多种方向并行。②在课程设置方面,前者以建筑设计为主线,注重专业化、职业化,强调与实践紧密联系;后者涉及内容丰富,覆盖的知识面宽,横向拓展性强,具有综合化、多样化的特点,但存在知识深度不够、技术层面的内容不足且落地性较差等问题。③在教学组织方面,前者实行导师组负责制和小组授课,有利于促进师生间的相互交流和了解;后者以分班制方式进行大班授课,各班级学生学习的同一类型室内或景观设计课程通常由不同的任课教师负责组织教学。这一相互独立的平行授课模式虽然带给学生多元的思维方法和设计成果,但也造成师生和生生间的交流机会少且不深入以及相互了解的渠道较窄等问题。④在教学效果方面,从课程作业质量和个人发展能力这2个评价教学效果和质量的重要参考指标看,前者培养的学生设计能力和研究能力较强,富有创新性,设计完成度高、落地性较强,无论是进入职场还是继续深造都取得了丰厚的成果;后者培养的学生设计能力较强但研究能力相对较弱,设计作品特色显著但设计的完成深度和推理的严谨性等存在不足,以从事环境设计或相关实践工作为主,并在业内获得较高声望。通过比较分析,两校在环境设计类教育教学方面各具特点,各有各的优势和不足。以此为启示,对中国环境设计类教育的发展进行了深入思考,并提出相应的建议措施。一是在坚守自身特色的前提下,优化课程设置,使学生在初步建构起专业学理框架的基础上能扎实、系统地掌握某一专业分支领域的知识。二是明确教育理念,主动调整设计的使命、角色和方法;完善教学过程,注重理论联系实际,强化校企联合,探索能够有效发挥每位教师之擅长的教学模式。三是改进教学方法,重构学生的学习过程;加强对外交流,培养学生的全球化意识。

关键词：匈牙利佩奇大学北京林业大学环境设计类教育教学理念课程设置教学过程教学效果比较研究

来源：

维普期刊数据库

同方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

Seasonal resource selection of an arboreal habitatspecialist in a human-dominated landscape: A case studyusing red panda

引用

Current Zoology 2023年第1期69卷 1-11页

作者： Damber Bista greg S.Baxter Nicholas J.Hudson Peter J.Murray School of Agriculture and Food Sciences(Wildlife Science Unit) The University of QueenslandGattonQLD 4343Australia School of Agriculture and Environmental Science University of Southern QueenslandDarling HeightsQLD 4350Australia

Human-dominated landscapes provide heterogeneous wildlife habitat. Conservation of habitat specialists, like red pandas Ailurus fulgens, inhabiting such landscapes is challenging. Therefore, information on resource use across spatial and temporal scales could enable informed-decisionmaking with better conservation outcomes. We aimed to examine the effect of geo-physical, vegetation, and disturbance variables on fine-scalehabitat selection of red pandas in one such landscape. We equipped 10 red pandas with GPS collars in eastern Nepal in 2019 and monitoredthem for 1 year. Our analysis was based on a generalized-linear-mixed model. We found the combined effect of geo-physical, vegetation, anddisturbance variables resulted in differences in resource selection of red pandas and that the degree of response to these variables variedacross seasons. Human disturbances, especially road and cattle herding activities, affected habitat utilization throughout the year whereas othervariables were important only during restricted periods. For instance, geo-physical variables were influential in the premating and cub-rearingseasons while vegetation variables were important in all seasons other than premating. Red pandas selected steeper slopes with high solarinsolation in the premating season while they occupied elevated areas and preferred specific aspects in the cub-rearing season. Furthermore,the utilized areas had tall bamboo in the birthing and cub-rearing seasons while they also preferred diverse tree species and high shrub coverin the latter. Our study demonstrates the significance of season-specific management, suggests the importance of specific types of vegetationduring biologically crucial periods, and emphasizes the necessity to minimize disturbances throughout the year.

关键词： Ailurus fulgens anthropogenic disturbances habitat specialists habitat utilization resource use spatio-temporal variation vegetation

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

Broadband 1-GHz mid-infrared frequency comb

引用

Light(Science & Applications) 2022年第10期11卷 2358-2364页

作者： Nazanin Hoghooghi Sida Xing Peter Chang Daniel Lesko Alexander Lind greg Rieker Scott Diddams Precision Laser Diagnostics Laboratory University of ColoradoBoulderCO 80309USA Time and Frequency Division National Institute of Standards and TechnologyBoulderCO 80305USA Department of Physics University of ColoradoBoulderCO 80309USA Department of Chemistry University of ColoradoBoulderCO 80309USA Electrical Computer and Energy Engineering University of ColoradoBoulderCO 80309USA

Mid-infrared(MIR)spectrometers are invaluable tools for molecular fingerprinting and hyper-spectral imaging.Among the available spectroscopic approaches,GHz MIR dual-comb absorption spectrometers have the potential to simultaneously combine the high-speed,high spectral resolution,and broad optical bandwidth needed to accurately study complex,transient events in chemistry,combustion,and microscopy.However,such a spectrometer has not yet been demonstrated due to the lack of GHz MIR frequency combs with broad and full spectral coverage.Here,we introduce the first broadband MIR frequency comb laser platform at 1 GHz repetition rate that achieves spectral coverage from 3 to 13 μm.This frequency comb is based on a commercially available 1.56 μm mode-locked laser,robust all-fiber Er amplifiers and intra-pulse difference frequency generation(IP-DFG)of few-cycle pulses in x(2)nonlinear crystals.When used in a dual comb spectroscopy(DCS)configuration,this source will simultaneously enable measurements with μs time resolution,1 GHz(0.03 cm-1)spectral point spacing and a full bandwidth of>5 THz(>166 cm-1)anywhere within the MIR atmospheric windows.This represents a unique spectroscopic resource for characterizing fast and non-repetitive events that are currently inaccessible with other sources.

关键词： repetition spacing transient

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

Return to sport following toe phalanx fractures:A systematic review

引用

World Journal of Orthopedics 2023年第6期14卷 471-484页

作者： greg A J Robertson Amit Sinha Thomas Hodkinson Togay Koç Department of Orthopaedic Surgery Queen Alexandra HospitalPortsmouth PO63LYUnited Kingdom Department of Trauma and Orthopaedic Surgery Wales DeaneryCardiff CF157QQUnited Kingdom Department of Orthopaedic Surgery Hull University Teaching Hospitals NHS TrustHull HU32JZUnited Kingdom Department of Trauma and Orthopaedic Surgery Southampton General HospitalSouthampton SO166YDUnited Kingdom

BACKGROUND Evidence-based guidance on return to sport following toe phalanx fractures is limited.AIM To systemically review all studies recording return to sport following toe phalanx fractures(both acute fractures and stress fractures),and to collate information on return rates to sport(RRS)and mean return times(RTS)to the sport.METHODS A systematic search of PubMed,MEDLINE,EMBASE,CINAHL,Cochrane Library,Physiotherapy Evidence Database,and Google Scholar was performed in December 2022 using the keywords‘Toe’,‘Phalanx’,‘Fracture’,‘injury’,‘athletes’,‘sports’,‘non-operative’,‘conservative’,‘operative’,‘return to sport’.All studies which recorded RRS and RTS following toe phalanx fractures were included.RESULTS Thirteen studies were included:one retrospective cohort study and twelve case series.Seven studies reported on acute fractures.Six studies reported on stress fractures.For the acute fractures(n=156),63 were treated with primary conservative management(PCM),6 with primary surgical management(PSM)(all displaced intra-articular(physeal)fractures of the great toe base of the proximal phalanx),1 with secondary surgical management(SSM)and 87 did not specify treatment modality.For the stress fractures(n=26),23 were treated with PCM,3 with PSM,and 6 with SSM.For acute fractures,RRS with PCM ranged from 0 to 100%,and RTS with PCM ranged from 1.2 to 24 wk.For acute fractures,RRS with PSM were all 100%,and RTS with PSM ranged from 12 to 24 wk.One case of an undisplaced intra-articular(physeal)fracture treated conservatively required conversion to SSM on refracture with a return to sport.For stress fractures,RRS with PCM ranged from 0%to 100%,and RTS with PCM ranged from 5 to 10 wk.For stress fractures,RRS with PSM were all 100%,and RTS with surgical management ranged from 10 to 16 wk.Six cases of conservatively-managed stress fractures required conversion to SSM.Two of these cases were associated with a prolonged delay to diagnosis(1 year,2 years)and four cases with an underlying deformity[hallux valgus(n=3),claw toe(n

关键词： Acute Stress Fracture Toe Phalanx Return Sport Rate Time

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：