检索结果-南通市图书馆

早期复发好转型多发硬化磁共振波谱成像和磁化传递成像病变负荷和临床评分的断层结合纵向影像的研究

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

国际医学放射学杂志 2009年第5期32卷 520-520页

作者： j.bellmann-strobl H.Stiepani j.Wuerfel G.Bohner F.Paul C.Warmuth 高莉 Department of Neuroradiology Charité-University Medicine BerlinCharitéplatz 110117 BerlinGermany

本研究的目的足评价早期复发好转型多发硬化（RRMS）病人基于MRI的病灶负荷和临床残疾之间的相关性。初诊为RRMS未经治疗的17例病人[女10例，男7例；平均年龄（33．0±7．9）岁]被纳入横断扫描与基于MRI的纵向（24个月）临床和评价，并... 详细信息

本研究的目的足评价早期复发好转型多发硬化（RRMS）病人基于MRI的病灶负荷和临床残疾之间的相关性。初诊为RRMS未经治疗的17例病人[女10例，男7例；平均年龄（33．0±7．9）岁]被纳入横断扫描与基于MRI的纵向（24个月）临床和评价，并且与年龄相匹配的健康对照组进行对比。应用1．5T设备行常规MRI序列、MR波谱（MRS）和磁化传递成像（MTI）检查。

关键词：多发硬化 MR波谱磁化传递成像脑白质

维普期刊数据库

Measurement and analysis technologies for magnetic pulse welding： established methods and new strategies

在线全文

学校读者我要写书评

暂无评论

Advances in Manufacturing 2016年第4期4卷 322-339页

作者： j. bellmann j. Lueg-Althoff S. Schulze S. Gies E. Beyer A. E. Tekkaya Institute of Manufacturing Science and Engineering TUDresden 01062 Dresden Germany Fraunhofer Institute for Material and Beam Technology Winterbergstrasse 28 01277 Dresden Germany Institute of Forming Technology and LightweightConstruction TU Dortmund Baroper Strasse 30344227 Dortmund Germany

Magnetic pulse welding （MPW） is a fast and clean joining technique that offers the possibility to weld dissimilar metals, e.g., aluminum and steel. The high-speed collision of the joining partners is used to generate strong atomic bonded areas. Critical brittle intermetallic phases can be avoided due to the absence of external heat. These features attract the notice of industries performing large scale productions of dissimilar metal joints, like automo- tive and plant engineering. The most important issue is to guarantee a proper weld quality. Numerical simulations are often used to predict the welding result a priori. Nevertheless, experiments and the measurement of process parameters are needed for the validation of these data. Sensors nearby the joining zone are exposed to high pressures and intense magnetic fields which hinder the evaluation of the electrical output signals. In this paper, existing analysis tools for process development and quality assurance in MPW are reviewed. New methods for the process monitoring and weld characterization during and after MPW are introduced, which help to overcome the mentioned drawbacks of established technologies. These methods are based on optical and mechanical measuring technologies taking advantage of the hypervelocity impact flash, the impact pressure and the deformation necessary for the weld formation.

关键词： Magnetic pulse welding (MPW) Processmonitoring Collision conditions Dissimilar metaljoining Materials testing

Does DE need a C?A proposal for a DE curriculum

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International journal of Digital Earth 2014年第1期7卷 88-92页

作者： Tim Foresman Sven Schade Yola Georgiadou josef strobl International Center for Remote Sensing Education BaltimoreMDUSA Shared Environmental Information System(SEIS)Support Program European Environment AgencyCopenhagenDenmark Faculty of Geo-Information Science and Earth Observation(ITC) University of TwenteEnschedeThe Netherlands Department of Geoinformatics Z_GIS University of SalzburgSalzburgAustria

The vision of a digital earth(DE)is continuously evolving,and the next-generation infrastructures,platforms and applications are being *** this article,we attempt to initiate a debate within the DE and with affine communities about‘why’a digital earth curriculum(DEC)is needed,‘how’it should be developed,and‘what’it could look *** is impossible to do justice to the Herculean effort of DEC development without extensive consultations with the broader *** propose a frame for the debate(what,why,and how of a DEC)and a rationale for and elements of a curriculum for educating the coming generations of digital natives and indicate possible *** particularly argue that a DEC is not a déjàvu of classical research and training agendas of geographic information science,remote sensing,and similar fields by emphasizing its unique characteristics.

关键词： learning education teaching training curriculum

Global Reference Grids for Big Earth Data

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Big Earth Data 2022年第3期6卷 251-255页

作者： Robert G.Gibb Matthew B.j.Purss Zoheir Sabeur Peter strobl Tengteng Qu Manaaki Whenua–Landcare Research Palmerston NorthNew Zealand Pangaea Innovations Pty.Ltd CanberraAustralia Department of Computing and Informatics Talbot CampusUniversity of BournemouthBournemouthUK European Commission Joint Research Centre(JRC)IspraItaly College of Engineering Peking UniversityBeijingChina

The emerging field of Discrete Global Grid Systems(DGGS)provides a way to organise,store and analyse spatio-temporal data at multiple resolutions and scales(from near global scales down to microns).DGGS partition the entire planet into a discrete hierarchy of global tessellations of progressively finer resolution zones(or cells).Data integration,decomposition and aggregation are optimised by assigning a unique spatio-temporal identifier to each *** identifiers are encodings of both the zone’s location and its *** a result,complex multi-dimensional,multi-resolution spatio-temporal operations are simplified into sets of 1D array and filter operations.

关键词： operations simplified partition

Reproducing indolent B-cell lymphoma transformation with T-cell immunosuppression in LMP1/CD40-expressing mice

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2019年第4期16卷 412-414页

作者： Christelle Vincent-Fabert Alexis Saintamand Amandine David Mehdi Alizadeh François Boyer Nicolas Arnaud Ursula Zimber-strobl jean Feuillard Nathalie Faumont CNRS-UMR 7276 INSERM U1262 CRIBL University of Limogesand Hematology Laboratory of Dupuytren Hospital University Center(CHU)of LimogesLimogesFrance INSERM U917 University of Rennes 1RennesFrance LNPRM EFS BretagneRennesFrance Research Unit Gene Vectors Helmholtz Center MunichGerman Research Center for Environmental Health GmbHMunichGermany

Indolent B-cell lymphomas are a group of incurable cancers of the elderly that encompass various entities,such as chronic lymphocytic leukemia(CLL),follicular lymphoma(FL),and marginal zone lymphoma(MZL).All indolent lymphomas may evolve towards aggressive transformation with an increased proliferation index and decreased tumor doubling *** transformation,which is called Richter’s syndrome in CLL,is associated with an aggressive clinical course and poor *** least in CLL,transformation of an indolent B-cell clone is molecularly different from that of de novo diffuse large B-cell lymphomas.1 Aging is known to be associated with immune decline,with increased inflammation,decreased immune surveillance and increased onset of malignancies among the consequences.2 Progression of indolent B-cell lymphomas is likely to be associated with escape from immune surveillance.

关键词： lymphoma Richter transformation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

松辽盆地嫩江组油页岩发育控制因素

地球科学（中国地质大学学报） 2014年第2期39卷 174-186页

作者：贾建亮刘招君 Achim Bechtel Reinhard F.Sachsenhofer 孙平昌 Susanne A.I.strobl 中国地质科学院地质研究所北京100037 吉林大学地球科学学院吉林长春1300613 雷奥本大学应用地球科学和地球物理系

松辽盆地嫩江组一段和二段发育的油页岩是极其优质烃源岩,生物标志化合物参数指示油页岩母质生源主要来自于水生生物其繁盛受温湿气候和湖泊富营养化控制.岩石学、元素地球化学、生物标志化合物等参数表明,高盐和缺氧条件下的稳定水体... 详细信息

松辽盆地嫩江组一段和二段发育的油页岩是极其优质烃源岩,生物标志化合物参数指示油页岩母质生源主要来自于水生生物其繁盛受温湿气候和湖泊富营养化控制.岩石学、元素地球化学、生物标志化合物等参数表明,高盐和缺氧条件下的稳定水体分层是嫩一段油页岩沉积时期有机质保存的主控因素,而嫩二段油页岩沉积时期水体盐度分层明显减弱,此时藻类个体增大和孤立藻数量增多条件下的高生物生产力有利于有机质富集.为揭示嫩江组不同沉积环境下油页岩发育的控制因素,建立了嫩一段油页岩沉积时期保存条件控制和嫩二段油页岩沉积时期生物生产力控制的两种有机质富集模式,这对含氧淡水大型陆相湖泊的有机质富集成因探讨具有重要借鉴意义.

关键词：油页岩生物标志化合物生物生产力保存条件石油地质松辽盆地嫩江组

维普期刊数据库

DEVELOPMENT OF A STANDARDIZED ACUPUNCTURE FOR FATIGUE IN WESTERN PATIENTS WITH MULTIPLE SCLEROSIS

在线全文

学校读者我要写书评

暂无评论

journal of Integrative Medicine 2014年第3期 273-273页

作者： Ying-hui Chang Daniel Pach judith bellmann-strobl Friedemann Paul Xue-min Shi Claudia M Witt Institute for Social Medicine Epidemiology and Health EconomicsCharité – Universittsmedizin Berlin NeuroCure Clinical Research Center Charité – Universittsmedizin Berlin First Teaching Hospital of Tianjin University of Traditional Chinese Medicine Center for Integrative Medicine University of Maryland School of Medicine

Background: Fatigue is the most common clinical symptom of patients with multiple sclerosis(MS) and strongly influences their quality of *** Tianjin, China, Xingnao Kaiqiao(XNKQ)acupuncture is widely used to treat *** is a standard acupuncture therapy developed by Shi Xuemin with a strict set of points and standard quantitative *** retention time is about 15 min for each session, which is usually applied five times a week over at least four *** acupuncture aims to alert the spirit, refresh and regulate the *** "mind" here not only refers to mental, conscious and thinking activities, but also manifests the function of zang-fu organs and ***: Our aim was to improve that the intervention could be applied as a standardized acupuncture in a randomized controlled trial in the West(***: NCT01864707,trial performed in Germany).The trial compared usual care plus acupuncture with usual care only for fatigue in Western MS patients in an outpatient ***: A consensus was achieved involving Chinese acupuncture experts, Western MS experts, and research methodologists in an onsite group of discussions and email ***: A XNKQ-based prescription for fatigue is based on the following assumption: regulate and harmonize zang-fu organs, reinforce the function of liver and kidney, and improve the motor *** is applied twice a week over twelve weeks and consists of 19 points and 34 needles(0.25 mm × 40 mm stainless steel disposable).For each point a standardized manual manipulation which reflects the manipulation also used in China is *** retention time is 15 min per ***: A standardized acupuncture for fatigue in MS patients who are suitable for a clinical trial in the West can be developed.

关键词： MS DEVELOPMENT OF A STANDARDIZED ACUPUNCTURE FOR FATIGUE IN WESTERN PATIENTS WITH MULTIPLE SCLEROSIS

Quasi-optimal control of a solar thermal system via neural networks✩

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

能源与人工智能(英文) 2023年第2期12卷 128-144页

作者： jana Friese Niklas Brandt Andreas Schulte Christian Kirches Wilhelm Tegethoff jürgen Köhler Technische Universität Braunschweig Institut für ThermodynamikHans–Sommer–Straße 538106 BraunschweigGermany Technische Universität Braunschweig Institut für Mathematische OptimierungUniversitätsplatz 238106 BraunschweigGermany

The optimal control of complex thermal energy systems is a challenge due to their dynamic behavior andconstantly changing boundary conditions. To maximize the energy efficiency of such a dynamic system, optimaltrajectories for the controlled variables are needed. Extensive system knowledge is required to model the systemaccurately enough to be able to compute optimal trajectories. The high computational cost of computingoptimal control solutions with traditional approaches, especially with changing boundary conditions, oftenmakes this approach unusable for applications with limited computational power, such as real-time applicationson electronic control units (ECUs). This study investigates a possible solution to this challenge using a simplifiedexample system. Optimal control solutions for different boundary and initial conditions are generated forthe selected solar thermal system using a direct multiple shooting algorithm. Based on Bellman’s optimalityprinciple, the generated solutions are transformed into a data set of optimal state–action pairs. On this basis,different types of neural networks are trained, specifically a feed-forward, a recurrent, and a radial basisfunction network. Thus, data generation and training can be performed offline, and the required online computations are significantly reduced since the evaluation of a trained neural network requires comparatively lowcentral processing unit (CPU) power. The trained neural network controllers are tested for their ability to outputnear-optimal control actions based on the current system state. The feed-forward and recurrent neural networksshow promising initial results in this regard. Open questions and the need for improvements are discussed.

关键词： Optimal control Neural networks bellmann equation Thermal systems Optimization

应用超声弹性成像评价正中神经弹性来提高超声诊断腕管综合征的准确性

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

国际医学放射学杂志 2014年第2期 175-175页

作者： H.Miyamoto E.j.Halpern M.Kastlunger M.Gabl R.Arora R.bellmann-Weile 尹丽 Department of Diagnostic Radiology Medical University Innsbruck Anichstrasse 35 A -6020 Innsbruck Austria

目的通过比较健康志愿者和腕管综合征(CTS)病人的正中神经(MN)弹性,评价超声弹性成像测量正中神经弹性的诊断价值。材料与方法本研究经机构审查委员会批

关键词：正中神经臂丛腕管综合征超声弹性成像弹性力学性能