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MRI双向反转恢复序列在心肌瘢痕钆增强成像中延迟血液信号减少的应用

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国际医学放射学杂志 2012年第5期 479-480页

作者： S.A.Peel G.Morton A.Chiribiri a.schuster E.Nagel R.M.Botnar 倪玲 Division of Imaging Sciences and Biomedical Engineering King's College LondonRayne Institute4th Floor Lambeth WingSt Thomas' HospitalWestminster Bridge RdSE1 7EH LondonEngland

摘要目的研究3.0TMRI上的标准反转恢复(IR)序列相比,双向IR预脉冲在心肌瘢痕钆延时增强检查中是否提高瘢痕-血液对比和专家的诊断信心及一致性。方法这项研究得到当地伦理委员会的批准,所有病人均签署了书面知情同意书。12例有心肌瘢痕... 详细信息

摘要目的研究3.0TMRI上的标准反转恢复(IR)序列相比,双向IR预脉冲在心肌瘢痕钆延时增强检查中是否提高瘢痕-血液对比和专家的诊断信心及一致性。方法这项研究得到当地伦理委员会的批准,所有病人均签署了书面知情同意书。12例有心肌瘢痕的男性病人[平均年龄(63±8)岁]在注射0.2mmol/kg钆布醇10、20和30min后分别使用标准的和双向IR序列进行MR成像。

关键词：反转恢复瘢痕 MRI 序列血液解剖学心肌

心脏MRI主动脉、左房、左室应力测量技术对主动脉缩窄修复后心室-血管属性的评价

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国际医学放射学杂志 2017年第2期 230-230页

作者： Q.Shang S.Sarikouch S.Patel a.schuster M.Steinmetz P.Ou 江舒 Division of Pediatric Cardiology University of Nebraska College of Medicine and Children’s Hospital and Medical Center

摘要目的应用心脏MRI(CMR)测量主动脉面积应力、左房和左室纵向及环周应力来评价主动脉缩窄(Co A)修复术后病人的心室-血管特征。方法 75名研究对象包括50例

关键词：左房左室主动脉缩窄主动脉狭窄先天性心脏病 MRI 升主动脉主动脉升部左室质量心脏心室术后病人左室长轴血管

Computing Open-Loop Optimal Control of the q-Profile in Ramp-Up Tokamak Plasmas Using the Minimal-Surface Theory

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Plasma Science and Technology 2013年第5期15卷 403-410页

作者：许超欧勇盛 Eugenio schuster 于欣 The State Key Laboratory of Industrial Control Technology Zhejiang University Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Department of Mechanical Engineering & Mechanics Lehigh University Ningbo Institute of Technology Zhejiang University

The q-profile control problem in the ramp-up phase of plasma discharges is consid- ered in this work. The magnetic diffusion partial differential equation （PDE） models the dynamics of the poloidal magnetic flux profile, which is used in this work to formulate a PDE-constrained op-timization problem under a quasi-static assumption. The minimum surface theory and constrained numeric optimization are then applied to achieve suboptimal solutions. Since the transient dy- namics is pre-given by the minimum surface theory, then this method can dramatically accelerate the solution process. In order to be robust under external uncertainties in real implementations, PID （proportional-integral-derivative） controllers are used to force the actuators to follow the computational input trajectories. It has the potential to implement in real-time for long time discharges by combining this method with the magnetic equilibrium update.

关键词： advanced plasma operations current profile dynamics optimal control theory,minimal surface equation differential geometry

GPS tracking of non-breeding ravens reveals the importance of anthropogenic food sources during their dispersal in the Eastern Alps

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Current Zoology 2016年第4期62卷 337-344页

作者： Matthias-Claudio LORETTO Richard schuster Thomas BUGNYAR Department of Cognitive Biology University of Vienna Althanstrasse 14 A-1090 vienna Konrad Lorenz Forschungsstelle Core Facility for Behaviour and Cognition University of Vienna Fischerau 11 A-4645 GrLinau im Almtal Austria CDepartment of Forest and Conservation Sciences University of British Columbia Vancouver B.C. Canada V6T1Z4

In many songbirds, the space use of breeders is well studied but poorly understood for non-breeders. In common ravens, some studies of non-breeders indicate high vagrancy with large individual differences in home range size, whereas others show that up to 40% of marked non-breeders can be regularly observed at the same anthropogenic food source over months to years. The aim of this study was to provide new insights on ravens＇ behavior during dispersal in the Eastern Alps. We deployed Global Positioning System （GPS） loggers on 10 individuals to gather accurate spatial and temporal information on their movements to quantify： 1） the dimension of the birds＇ space use （home range size with seasonal effects and daily/long-term travel distances）, 2） how long they stayed in a dispersal stage of wandering as opposed to settling temporarily, and 3） their destination of movements. We recorded movements of up to 40km per hour, more than 160km within 1 day and more than 11,000 km within 20 months, indicating high vagrancy. Switching frequently between temporarily settling and travelling large distances in short time intervals leads to extensive home ranges, which also explains and com- bines the different findings in the literature. The destinations are rich anthropogenic food sources, where the birds spent on average 75% of their time. We discuss how ravens may find these ＂feeding hot spots＂ and which factors may influence their decision to stay/leave a site. The strong dependence on anthropogenic resources found in this population may have implications for site management and conservation issues.

关键词： common raven Corvus corax non-breeder space use dispersal kernel density.

Update on Management of Portal Vein Thrombosis and the Role of Novel Anticoagulants

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Journal of Clinical and Translational Hepatology 2019年第2期7卷 154-164页

作者： Matthew Wu Michael schuster Micheal Tadros Albany Medical College AlbanyNYUSA Department of Radiology Albany Medical Center HospitalAlbanyNYUSA Department of Gastroenterology Albany Medical Center HospitalAlbanyNYUSA

The clinical management of portal vein thrombosis(PVT)remains ambiguous due to its heterogeneous presentations and its associations with liver disease,malignancy,and hypercoagulable *** natural history and clinical outcome of PVT are highly variable,dependent upon size,extent and degree of the thrombotic occlusion,as well as the physiological impact of patient *** existing clinical guidelines consistently recommend low molecular weight heparin or vitamin K antagonist anticoagulation in cirrhotic patients with symptomatic acute PVT,management of asymptomatic and chronic PVT may need to be determined on a case-by-case basis,factoring in the state of underlying liver *** general,patients with PVT and underlying malignancy should be anticoagulated to alleviate symptoms and prevent recurrences that could disrupt the cancer ***,existing clinical data does not support routine anticoagulation of cirrhotic patients with asymptomatic PVT in the absence of underlying *** low molecular weight heparin and vitamin K antagonist remain the most commonly used agents in PVT,an emerging body of clinical evidence now suggests that direct-acting oral anticoagulants may be used safely and effectively in *** such,direct-acting oral anticoagulants may offer a more convenient anticoagulation alternative for PVT management in future practice.

关键词： Portal vein Thrombosis Liver cirrhosis Neoplasm Anticoagulant

Monitoring dynamics of defects and single Fe atoms in N-functionalized few-layer graphene by in situ temperature programmed scanning transmission electron microscopy

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Journal of Energy Chemistry 2022年第1期31卷 520-530,I0014页

作者： Rosa Arrigo Takeo Sasaki June Callison Diego Gianolio Manfred Erwin schuster School of Science Engineering and EnvironmentUniversity of SalfordManchester M54WTUK Diamond Light Source Harwell Science and Innovation CampusDidcot 0X1/ODEUK JEOL UK Ltd.JEOL House 1-2 Silver CourtWatchmeadWelwyn Garden CityHerts AL71LTUK Department of Chemistry University College London20 Gordon StreetLondon WC1H OAJUK UK Catalysis Hub Research Complex at Harwell(RCaH)Rutherford Appleton LaboratoryHarwell Oxon 0X11 OFAUK Johnson Matthey Technology Centre Reading RG49NH.UK

In this study,we aim to contribute an understanding of the pathway of formation of Fe species during top-down synthesis of dispersed Fe on N-functionalized few layer graphene,widely used in *** use X-ray absorption spectroscopy to determine the electronic structure and coordination geometry of the Fe species and in situ high angle annular dark field scanning transmission electron microscopy combined with atomic resolved electron energy loss spectroscopy to localize these,identify their chemical configuration and monitor their dynamics during thermal *** show the high mobility of peripheral Fe atoms,first diffusing rapidly at the trims of the graphene layers and at temperatures as high as 573 K,diffusing from the edge planes towards in-plane locations of the graphene layers forming three-,four-coordinated metal sites and more complexes polynuclear Fe *** process occurs via bond C-C breaking which partially reduces the extension of the graphene ***,the vast majority of Fe is segregated as a metal *** dynamic interconversion depends on the structural details of the surrounding graphitic environment in which these are formed as well as the Fe loading.N species appear stabilizing isolated and polynuclear Fe species even at temperatures as high as 873 *** significance of our results lies on the fact that single Fe atoms in graphene are highly mobile and therefore a structural description of the electroactive sites as such is insufficient and more complex species might be more relevant,especially in the case of multielectron transfer *** we provide the experimental evidence of the formation of these polynuclear Fe-N sites and their structural characteristics.

关键词： HAADF-STEM Single Fe atom sites N-doped Few-layer graphene Dinuclear Fe species

DAYLIGHT IN OFFICE BUILDINGS—THE USERS’ RESPONSE

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Journal of Green Building 2008年第1期3卷 102-111页

作者： Heide G.schuster MA Architect AKNW WSGreenTechnologiesAlbstrasse 1470597 StuttgartGermany

*** Fully glazed buildings have increased in popularity throughout the world’s building *** buildings are often especially designed with a high glazing ratio to fulfil representative architectural ***,a high glazing ratio is also likely to result in a high solar load and glare problems,which cause an unsatisfactory working environment that can reduce employee productivity ***,it creates high cooling loads resulting in immense maintenance *** provide light direction to illuminate the space naturally and shading to avoid glare as well as to reduce cooling *** studies have been carried out on thermal comfort,others on lighting issues,but mostly under artificial lighting conditions or under the exclusion of sunny *** performance of light directing elements under sunny conditions and the resulting lighting quality so far has not been *** under sunny conditions,however,conflict between the use of daylight,the need for solar protection,and the view to the outside occur and have not been *** fill this gap an intensive monitoring program has been conducted at the University of Dortmund investigating different innovative shading and light directing devices(2001–2006).Simultaneously user acceptance studies have been carried out to evaluate lighting quality *** paper discusses some of the results on the subjective rating of the indoor lighting *** and light perception often does neither correspond with the lighting levels set in regulations mostly for artificial lighting conditions nor the control strategies for shading *** objective of the work was to clarify the interdependencies between the conflicting needs and to point out user preferences which are important for a productive environment.

关键词： OFFICE lighting sunny

Disease-associated oligodendrocyte signatures in neurodegenerative disease:the known and unknown

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Neural Regeneration Research 2023年第10期18卷 2192-2193页

作者： Kristen H.schuster Hayley S.McLoughlin Department of Neurology University of MichiganAnn ArborMIUSA

Oligodendrocytes are one of the most abundant cell types in the central nervous system(CNS)and act in close contact with neurons to assist with their cellular function and health(Kuhn et al.,2019).Oligodendrocytes play particular roles in rapid nerve impulse conduction through the wrapping of their myelinating projections a round a nerve axon,as well as by offering trophic and metabolic support for the high energy expenditure of ***。

关键词： cytes degenerative

Life cycle and morphology of development stages of Physocephalus dromedarii (Nematoda: Spirocercidae)

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Asian Pacific Journal of Tropical Biomedicine 2016年第10期6卷 825-829页

作者： Rolf Karl schuster Saritha Sivakumar Jrg Kinne Central Veterinary Research Laboratory

Objective: To study the development of Physocephalus dromedarii(P. dromedarii) in the final ***: For this, 5 adult dromedaries were orally infected with third larval stages of P. dromedarii obtained from naturally infected scarab beetles(Scarabaeus cristatus). The camels were necropsied 14, 42, 70, 84 and 280 days after infection and their abomasi were examined for the presence of ***: Early 4th stage larva occurred already 2 weeks after infection. They were still in the sheet of the 3rd stage larva. Six weeks after infection, the nematodes became juvenile male and female adults measuring 9 and 10 mm, respectively. Their size doubled at 10 weeks post infection and patency was reached at 12 weeks. P. dromedarii was still present in the camel that was examined 40 weeks after ***: As a result of experimental infection of the natural host, the determined prepatent period of P. dromedarii equalled 12 weeks.

关键词： Physocephalus dromedarii Nematoda Life cycle Dromedary Abomasum