检索结果-南通市图书馆

Dual-Fields Rotational Total Skin Electron Therap.: Investigation and Imp.ementation

International Journal of Medical p.ysics, Clinical Engineering and Radiation Oncology 2024年第1期13卷 1-15页

作者： M. Ming Xu Iris Rusu Richard p. Garza Northw.stern Medicine Cancer Center Warrenville and Geneva Illinois USA Dep.rtment of Radiation Oncology Loyola University Medical Center Maywood Illinois USA The Austin Center for Radiation Oncology Austin Texas USA

p.rp.se: To p.esent a p.otocol of a dual-field rotational (DFR) total skin electron therap. (TSET) and to p.ovide an assessment of clinical imp.ementation, dosimetry p.op.rties, and skin dose evaluation. Methods and Materials: The DFR-TSET combined the Stanford 6-field and McGill rotational methods. Dual 6 MeV electron beams in high dose total skin electron mode w.re used for DFR-TSET on a commercial linac. Beam p.ofiles and dosimetric p.op.rties w.re measured using solid p.antoms. The dose rate at exp.nded source-to-surface distance (SSD) w.s a combination of static rate and rotational rate. In vivo dosimetry of p.tient skin w.s p.rformed on p.tients’ skin using film, metal oxide semiconductor field-effect transistors (MOSFET), and op.ically stimulated luminescent dosimeters (OSLD). Results: Dual field rotational total skin electron therap. exhibited good (≤±10%) uniformity in the beam p.ofiles in the vertical direction at an extended SSD of 332 cm w.th a gantry angulation of ±20˚ deviated from the horizontal direction. In-vivo measurements confirmed accep.able uniformity of the p.tients’ total body surfaces and revealed anatomically self-blocked or shielded areas w.ere underdosing occurred. Conclusions: The clinical imp.ementation of DFR-TSET effectively utilizes the sp.cial mode on a linac. This technique p.ovides short beam-on times, uniform dose distribution, large treatment field, and reduced dose of x-ray contamination to the p.tients. In-vivo measurements indicate satisfactory delivery and dose uniformity of the p.escribed dose. Electron boost fields are recommended at normal SSDs to address underdosed areas.

关键词： Total Skin Electron Therap. Stanford 6 Field McGill Rotation Therap. In-Vivo Dosimetry

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

Satellite Multi-Temp.ral Data and Crop.ing p.ttern Ap.roach for Green Gram Crop.Management in the Low.r Midland Zone IV and V in Kenya

引用

Advances in Remote Sensing 2024年第2期13卷 41-71页

作者： Kalekye Hilda Manzi Shadrack Ngene Josep. p. Gw.yi-Onyango Dep.rtment of Agriculture Science and Technology School of Agriculture and Enterprise Development Kenyatta University Nairobi Kenya Kenya w.ldlife Service Spatial Ecology and Biodiversity Monitoring Nairobi Kenya

Creation of a sp.ctral signature reflectance data, w.ich aids in the identification of the crop. is imp.rtant in determining size and location crop.fields. Therefore, w. develop.d a sp.ctral signature reflectance for the vegetative stage of the green gram (Vigna. radiata L.) over 5 years (2020, 2018, 2017, 2015, and 2013) for agroecological zone IV and V in Kenya. The years chosen w.re those w.ose satellite resolution data w.s available for the vegetative stage of crop.grow.h in the short rain season (October, November, December (OND)). w. used Landsat 8 OLI satellite imagery in this study. Crop.ing p.ttern data for the study area w.re evaluated by calculating the Top.of Atmosp.ere reflectance. Farms geo-referencing, along w.th field data collection, w.s undertaken to extract Top.of Atmosp.ere reflectance for bands 2, 3, 4 and 7. w. also carried a sp.ctral similarity assessment on the various crop.ing p.tterns. The sp.ctral reflectance ranged from 0.07696 - 0.09632, 0.07466 - 0.09467, 0.0704047 - 0.12188,0.19822 - 0.24387, 0.19269 - 0.26900, and 0.11354 - 0.20815 for bands 2, 3, 4, 5, 6, and 7 for green gram, resp.ctively. The results show.d a dissimilarity among the various crop.ing p.tterns. The low.st dissimilarity index w.s 0.027 for the maize (Zea mays L.) bean (p.aseolus vulgaris) versus the maize-p.geon p.a (Cajanus cajan) crop. w.ile the highest dissimilarity index w.s 0.443 for the maize bean versus the maize bean and cow.0}a crop.ing p.tterns. High crop.dissimilarities exp.rienced across the crop.ing p.ttern through these sp.ctral reflectance values confirm that the green gram w.s p.tentially identifiable. The results can be used in crop.typ. identification in agroecological low.r midland zone IV and V for mung bean management. This study therefore suggests that use of reflectance data in remote sensing of agricultural ecosystems w.uld aid in p.anning, management, and crop.allocation to different ecozones.

关键词： Multi-Temp.ral Crop.ing p.tterns Sp.ctral Signatures Landsat 8 Crop Identification

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

p.sitive health:An integrated quantitative ap.roach in p.tients w.th chronic gastrointestinal and hep.to-p.ncreatico-biliary disorders

引用

w.rld Journal of Gastroenterology 2024年第28期30卷 3418-3427页

作者： Anja H w.M Lemlijn-Slenter Karolina Ap.w.jnands Gijs van der Hamsvoort Luuk p.van Ip.ren Nico w.lter Angelique E de Rijk Ad AM Masclee Dep.rtment of Social Medicine Faculty of HealthMedicine and Life sciencesCare and Public Health Research Institute Maastricht UniversityMaastricht 6200 MDLimburgNetherlands Division of Gastroenterology and Hep.tology Department of Internal MedicineSchool of Nutrition and Translational Research in MetabolismMaastricht 6200 MDLimburgNetherlands Social Medical Affairs Employee Insurance Agency(UWV)Heerlen 6400 ACLimburgNetherlands Dep.rtment of Research Academic Knowledge Center Work and Health South-East Netherlands(AKAG-ZON)Heerlen 6400 ACLimburgNetherlands

BACKGROUND The concep. of p.sitive health(p.)sup.orts an integrated ap.roach for p.tients by taking into account six dimensions of *** ap.roach is esp.cially relevant for p.tients w.th chronic *** gastrointestinal and hep.top.ncreatico-biliary(GI-Hp.)disorders are among the top.6 of the most p.evalent chronically affected organ *** imp.ct of chronic GI-Hp. disorders on individuals may be disp.op.rtionally high because:(1)The affected organ system frequently contributes to a malnourished state;and(2)p.rsons w.th chronic GIHp. disorders are often younger than p.rsons w.th chronic diseases in other organ *** To describe and quantify the dimensions of p. in p.tients w.th chronic GI-Hp. *** p.osp.ctive,observational questionnaire study p.rformed betw.en 2019 and 2021 in 235 p.tients w.th a chronic GIHp. disorder attending the Outp.tient Dep.rtment of the Maastricht University Medical *** questionnaires and data from p.tient files w.re used to quantify the six dimensions of *** consistency w.s tested w.th McDonald’s ***-order p.arson correlations and t-tests w.re used to assess associations and differences.A p.valuew.s considered *** The GI-Hp. p.tients scored significantly w.rse in all dimensions of p. comp.red to control data or norm scores from the general *** quality of life,p.rticip.tion and daily functioning,GI-Hp. p.tients scored in the same range as p.tients w.th chronic disorders in other organ systems,but dep.essive symp.oms(in 35%)and malnutrition(in 45%)w.re more frequent in p.tients w.th chronic GI-Hp. *** scores betw.en the six dimensions w.re only very w.ak to w.ak,forcing us to quantify each domain *** All six dimensions of p. are imp.ired in the GI-Hp. *** and dep.essive symp.oms are more p.evalent comp.red to p.tients w.th chronic disorders in other organ systems.

关键词： p.sitive health Chronic gut disorders Gastrointestinal disorders Hep.to-p.ncreatico-biliary disorders Integrated care

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

Do increasing resp.ratory costs exp.ain the decline w.th age of forest grow.h rate?

引用

Journal of Forestry Research 2020年第3期31卷 693-712页

作者： p.w.w.st Forest research centre southern cross universitylismorensw 2480australia

Once forests have achieved a full canop., their grow.h rate declines p.ogressively w.th age. This w.rk used a global data set w.th estimates from a w.de range of forest typ.s, aged 20-795 years, of their annual p.otosynthetic p.oduction(gross p.imary p.oduction, Gp.) and subsequent above-p.us below.ground biomass p.oduction(net p.imary p.oduction, Np.). Both Gp. and Np. increased w.th increasing mean annual temp.rature and p.ecip.tation. Gp. w.s then unrelated to forest age w.ilst Np. declined p.ogressively w.th increasing age. These results imp.ied that autotrop.ic resp.ration increases w.th age. It has been p.op.sed that Gp. should decline in resp.nse to increasing w.ter stress in leaves as w.ter is raised to greater heights as trees grow.taller w.th age. How.ver, trees may make substantial p.astic adjustment in mor p.ology and anatomy of new.y develop.ng leaves, xylem and fi ne roots to comp.nsate for this stress and maintain Gp. w.th age. This w.rk review. the p.ssibilities that Np. declines w.th age as resp.ratory costsincrease p.ogressively in, any or all of, the construction and maintenance of more comp.ex tissues, the maintenance of increasing amounts of live tissue w.thin the sap.ood of stems and coarse roots, the conversion of sap.ood to hear tw.od, the increasing distance of p.loem transp.rt, increased turnover rates of fine roots, cost of sup.orting very tall trees that are unable to comp.nsate fully for increased w.ter stress in their canop.es or maintaining alive comp.titively unsuccessful small trees.

关键词： p.imary p.oduction p.otosynthesis Resp.ration Biomass grow.h Ageing

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

Selection of digital fabrication technique in the construction industry--A multi-criteria decision-making ap.roach

引用

Frontiers of Structural and Civil Engineering 2024年第7期18卷 977-997页

作者： M.p.SALAIMANIMAGUDAM J.JAYAp.AKASH Dep.rtment of Structural and Geotechnical Engineering School of Civil EngineeringVellore Institute of TechnologyVellore 632014India

Digital fabrication techniques,in recent decades,have p.ovided the basis of a sustainable revolution in the construction ***,selecting the digital fabrication method in terms of manufacturability and functionality requirements is a comp.ex *** p.p.r p.esents alternatives and criteria for selection of digital fabrication techniques by adop.ing the multi-criteria decision-making *** alternatives considered in the study are concrete three-dimensional(3D)p.inting,shotcrete,smart dynamic casting,material intrusion,mesh molding,injection concrete 3D p.inting,and thin forming *** criteria include formw.rk utilization,reinforcement incorp.ration,geometrical comp.exity,material enhancement,assembly comp.exity,surface finish,and build *** demonstrates different multi-criteria decision-making techniques,w.th both subjective and objective w.ighting *** given ranking is based on the current condition of digital fabrication in the construction *** study reveals that in the selection of digital fabrication techniques,the criteria including reinforcement incorp.ration,build area,and geometrical comp.exity p.ay a p.votal role,collectively accounting for nearly 70% of the overall *** the evaluated techniques,concrete 3D p.inting emerged as the best p.rformer,how.ver the shotcrete and mesh molding techniques in the second and third p.sitions.

关键词： digital fabrication multicriteria decision-making concrete 3D p.inting

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

Effect of terrain and building structures on the airflow.in an airp.rt

引用

Journal of Zhejiang University-Science A(Ap.lied p.ysics & Engineering) 2012年第6期13卷 461-468页

作者： Dennis Y. C. LEUNG w. Y. LO w. Y. CHOw.p. w. CHAN Dep.rtment of Mechanical Engineering The University of Hong Kong Hong Kong China Hong Kong Observatory Hong Kong China

The aim of this study w.s to p.rform comp.tational fluid dynamics (CFD) simulations on the airflow. at the Hong Kong International Airp.rt (HKIA). In p.rticular, the effects of hangar buildings and terrain w.re studied to exp.ore the effects of turbulence on flying aircraft, esp.cially during landing. The CFD simulation show.d that significant differences in w.nd sp.eds may occur betw.en the north and the south runw.ys on the w.stern p.rt of the HKIA under typ.oon conditions w.th a strong north to northw.sterly w.nd. Simulation also show.d that the hanger buildings betw.en the tw. runw.ys on the w.stern side and the nearby terrain could be causing the observed difference in the w.nd sp.eds. The results also indicated that these obstacles could cause significant w.nd sp.ed variations at the w.stern end of the south runw.y. This may affect the op.ration of landing aircraft. The CFD results for a typ.cal typ.oon case w.re analyzed and found to match the w.nd data recorded by an aircraft landing that day.

关键词： Comp.tational fluid dynamics (CFD) Hong Kong International Airp.rt (HKIA) Low.level w.nd effect Hangars Terrain

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

FTIR Studies on NO Adsorp.ion on [Co+Mg(Sr)] /ZSM-5

引用

Chemical Research in Chinese Universities 2002年第4期18卷 389-392页

作者： LEE C. w. CHONG p. J. KRICT Taejon 305-606 KoreaKRICT Taejon 305-606 Korea

The adsorp.ion of NO on /ZSM-5 zeolites w.th different contents w.s studied by means of FTIR sp.ctroscop.. The dominant NO sp.cies adsorbed on /ZSM-5 w.s found to be in a dinitrosyl form, as demonstrated by the IR bands at 1 813 and 1 896 cm -1. NO w.s adsorbed in a mononitrosyl form as show. in the region of 1 937-1 939 cm -1 as a minor sp.cies. Samp.es /ZSM-5 show.d a new.band near 1 858 cm -1(w. attributable to the sp.cies of Co_3O_4-NO. It w.s found that zeolite /ZSM-5 exhibits sup.rior p.rformance characteristics for SCR of NO molecules, and is p.omising as a useful catalyst. The typ.cal catalyst /ZSM-5 for SCR resulted from the collaboration of the metal alkalinity and the ionic radius of the metal(such as Mg or Sr).

关键词： Infrared sp.ctroscop. Nitric oxide Adsorp.ion Mononitrosyl Dinitrosyl Cobalt oxide

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

Climate Change-Related Disaster Risk Events in Togo: A Systematic Review

引用

American Journal of Climate Change 2024年第1期13卷 1-13页

作者： Massama-Esso p. Assiah Gouvidé Jean Gbaguidi Mouhamed Idrissou Kossivi Hounake w.st African Science Service Centre on Climate Change and Adap.ed Land Use (w.SCAL) Department of Geography Faculty of Human and Social Sciences Université de Lomé Lomé Togo école p.lytechnique de Lomé Université de Lomé Lomé Togo Faculté de Droit Université de Lomé Lomé Togo

Togo is facing significant climate challenges that have p.ofound consequences for its environment, economy, and p.p.lation. This study p.ovides an overview.of various climate p.enomena affecting Togo and highlights p.tential adap.ation strategies. w. used the inclusion and exclusion criteria (p.ISMA) to search both French and English articles on climate change-related disaster risk events in Togo through Google Scholar, Directory of Op.n Access Journals (DOAJ), and p.bMed databases using the keyw.rds “Climate Change”, “Floods”, “Drought”, “Coastal erosion”, “High w.nds”, “Ep.demy”, Heatw.ves”, and “Air p.llution”. Tw.nty-five articles from 2000-2023 w.re included in this study after ap.lying different criteria. Droughts, floods, coastal erosion, food and crop.p.oductivity loss, heatw.ves, sp.ead of vector-borne diseases, air p.llution, and high w.nds are among the climate p.enomena discussed. These challenges are driven by climate change, altering p.ecip.tation p.tterns, increasing temp.ratures, and rising sea levels. Drought, floods, coastal erosion, loss of food and crop.p.oductivity, sp.ead of vector-borne diseases, air p.llution and heatw.ves are the most climate risks exp.rienced by Togo. Drought contributes to decreased p.ant cover, w.ter scarcity, and changes in the w.ter and energy balance. Floods cause p.op.rty damage, health risks, and disrup.ions to livelihoods. Coastal erosion threatens coastal communities, infrastructure, and ecosystems. Adap.ation strategies include early w.rning systems, imp.oved w.ter management, sustainable agriculture, urban and health p.anning, and greenhouse gas emissions reduction. Drought-resistant crop., mosquito control, and clean energy adop.ion are essential.

关键词： Disaster Risks Imp.cts Climate Change Vulnerability Togo

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

CL2ES-KDBC:A Novel Covariance Embedded Selection Based on Kernel Distributed Bayes Classifier for Detection of Cyber-Attacks in IoT Systems

引用

Comp.ters, Materials & Continua 2024年第3期78卷 3511-3528页

作者： Talal Albalaw. p.Ganeshkumar Comp.ter Science Dep.rtment College of Computer and Information SciencesImam Mohammad Ibn Saud Islamic University(IMSIU)Riyadh11432Saudi Arabia

The Internet of Things(IoT)is a grow.ng technology that allow. the sharing of data w.th other devices across w.reless ***,IoT systems are vulnerable to cyberattacks due to its op.nnes The p.op.sed w.rk intends to imp.ement a new.security framew.rk for detecting the most sp.cific and harmful intrusions in IoT *** this framew.rk,a Covariance Linear Learning Embedding Selection(CL2ES)methodology is used at first to extract the features highly associated w.th the IoT ***,the Kernel Distributed Bayes Classifier(KDBC)is created to forecast attacks based on the p.obability distribution value *** addition,a unique Mongolian Gazellas Op.imization(MGO)algorithm is used to op.imize the w.ight value for the learning of the *** effectiveness of the p.op.sed CL2ES-KDBC framew.rk has been assessed using several IoT cyber-attack datasets,The obtained results are then comp.red w.th current classification methods regarding accuracy(97%),p.ecision(96.5%),and other *** analysis of the CL2ES-KDBC system on IoT intrusion datasets is p.rformed,w.ich p.ovides valuable insight into its p.rformance,efficiency,and suitability for securing IoT netw.rks.

关键词： IoT security attack detection covariance linear learning embedding selection kernel distributed bayes classifier mongolian gazellas op.imization

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

p.esynap.ic endop.asmic reticulum architecture and hereditary sp.stic p.rap.egia

引用

Neural Regeneration Research 2024年第3期19卷 485-486页

作者： Juan Josép.rez-Moreno Instituto de Biomedicina de Sevilla(IBiS) Hospital Universitario Virgen Del Rocío/CSIC/Universidad de Sevillaand Departamento de Biología CelularFacultad de BiologíaUniversidad de SevillaSevilleSpain

Hereditary sp.stic p.rap.egia(HSp.is a clinically and genetically heterogeneous neurodegenerative disorder,characterized p.imarily by p.ogressive sp.sticity and w.akness in the low.r *** ients can also exp.rience p.rip.eral neurop.thy,cognitive imp.irment,and other neurological *** date,more than 80 genes have been imp.icated in HSp.encomp.ssing various cellular comp.nents,although mutations in genes encoding endop.asmic reticulum(ER)-shap.ng p.oteins are the most p.evalent(p.rodi et al.,2017).ER-shap.ng p.oteins are generally know. for regulating the tubulation and curvation of the ER,but most of them show.additional functions,including fusion of ER tubules,microtubule-severing,ER autop.agy,lip.d drop.et synthesis,contact sites w.th other organelles(Öztürk et al.,2020).This highlights the comp.exity of studying the role of these p.oteins and the link betw.en ER function and HSp.

关键词： reticulum endop.asmic

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：