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腹主动脉瘤病人行多层cT血管逆行灌注成像的最佳进动速度

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国际医学放射学杂志 2013年第6期 596-596页

作者： T.Werncke c.von falck M.Wittmann T.Elgeti F.K.Wacker B.c.Meyer 朱珊张亚楠 Klinik für Radiologie Charité Universit?tsmedizin BerlinCampus Benjamin Franklin Hindenburgdamm 3012200 BerlinGermany

摘要目的评估进行下肢cT血管逆行成像(run-offcTA)检查的腹主动脉瘤病人采用不同扫描床进动速度(TF)对血管增强和影像质量的影响。方法本回顾性研究纳入了经机

关键词：多层cT 腹主动脉瘤回顾性研究血管成像下肢

Active Thermal control for Delaying Maintenance of Power Electronics converters

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chinese Journal of Electrical Engineering 2018年第3期4卷 13-20页

作者： Markus Andresen Johannes Kuprat Vivek Raveendran Johannes falck Marco Liserre christian-Albrechts-Universität zu Kiel KielGermany

Several studies have reported about power semiconductors and capacitors being the most sensitive components in power *** lifetime of these devices is associated with the mission profile and the resulting temperature *** preventing failures,it is of interest to estimate the Remaining Useful Lifetime(RUL)and several condition monitoring methods have been proposed for this ***,modular power converters consist of a high number of components and methods have been proposed to reduce the thermal stress and therefore extend the lifetime of a system with software,referred to as active thermal *** power converters with limited accessibility,the RUL detected by the condition monitoring system may not fit to the scheduled maintenance of the system and devices may still have a significant RUL when their replacement is ***,this work proposes to control the stress of the most deteriorated components in the system such that the failure probability of multiple building blocks is equalized when the next maintenance is ***,this concept is proposed to extend the time to the next maintenance and reduce the number of maintenance instances without affecting the mean lifetime of the system.

关键词： Power electronics reliability condition monitoring active thermal control prognostic maintenance

Providing Timely,Trustworthy Guidance to Frontline clinicians during a Pandemic

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Health Data Science 2021年第1期2021卷 169-170页

作者： Yngve falck-Ytter Rebecca L.Morgan VA Northeast Ohio Health care System and case Western Reserve University ClevelandOhioUSA School of Medicine Case Western Reserve UniversityClevelandOhioUSA Department of Health Research Methods Evidence and ImpactMcMaster UniversityHamiltonOntarioCanada

When the unexpected happens,such as a pandemic caused by a novel virus,governmental agencies,organizations,and experts in the field are rightly concerned that the paucity of available evidence may trigger unsubstantiated or erroneous *** harms of which can be exacerbated with today’s massive spread of misinformation through unregulated social media or other trusted information sites,inevitably influencing frontline clinicians’and healthcare workers’behavior and ***,recommendations for clinical practices are essential for the prevention,detection,treatment,and management during a global *** response to the cOVID-19 pandemic,clinical and research experts,government agencies,and specialty societies immediately took action to provide guidance to their constituents on how to manage all aspect of the pandemic.

关键词： prevention concerned massive

Bitcoin:Exploring Price Predictability and the Impact of Investor Sentiment

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chinese Business Review 2023年第2期22卷 45-60页

作者： Everton Anger cavalheiro Paulo Sérgio ceretta Luíza Roloff falck Federal University of Pelotas PelotasBrazil Federal University of Santa Maria Santa MariaBrazil Federal University of Pelotas São Lourenço do SulBrazil

This article addresses the predictability of Bitcoin’s price by examining relationships between Bitcoin and financial and emotional variables such as the Fear and Greed Index(FGI),the American Interest Rate(FED),and the Stock Market Index(NASDAQ).Through the use of statistical techniques such as the Johansen cointegration Test and Granger causality,as well as forecasting models,the study reveals that,despite the notorious volatility of the cryptocurrency market,it is possible to identify consistent behavioral patterns that can be successfully used to predict Bitcoin *** approach that combines VAR models and neural networks stands out as an effective tool to assist investors and analysts in making informed decisions in an ever-changing market environment.

关键词： Bitcoin price predictability fear and greed index American interest rate NASDAQ

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环境补救放射性污染场地的清理战略和技术

国际原子能机构通报 2001年第2期43卷 20-24页

作者： W.EBERHARD falck IAEA核燃料循环和废物管理处废物技术科

近几年,为使环境更清洁和更安全需采取的行动已经提到社会和政治议程。它们包括对那些给人类及周围环境造成放射学危险的受污染场地进行补救的措施。放射学危险可能来自各种核活动或非核活动。其中包括: 核或放射学事故; 核武器生产和试验;

关键词：放射性污染场地清理战略清理技术环境污染放射性核素

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Determinants of Satisfaction at Work and Its Reflections on Performance

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chinese Business Review 2024年第1期23卷 24-36页

作者： Giovani Luiz Garcia costantini Everton Anger cavalheiro Larissa Medianeira Bolzan Alejandro Martins Rodrigues Luíza Roloff falck Federal University of Pelotas PelotasBrazil

This study examines the relationship between job satisfaction and performance,investigating personality traits and satisfaction aspects among employees of a Federal Higher Education Institution.A questionnaire was administered to 658 participants,using structural equation modeling for *** highlighted that challenging work,neuroticism,and self-esteem significantly influenced overall workplace satisfaction,while general satisfaction,self-efficacy,and lack of attention were key determinants of work *** emphasizes the importance for managers to prioritize factors enhancing employee satisfaction,as it positively correlates with job performance.

关键词： satisfaction at work work performance personality traits facets of job satisfaction Federal Higher Education Institution

Vitamin c activation of the biosynthesis of epoxyeicosatrienoic acids

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Advances in Bioscience and Biotechnology 2012年第3期3卷 204-218页

作者： Houli Jiang Fiona E. Harrison Kavita Jain Samantha Benjamin James M. May Joan P. Graves Darryl c. Zeldin John R. falck Bruce D. Hammock John c. McGiff Department of Biochemistry University of Texas Southwestern Medical Center Dallas Texas USA Department of Medicine Vanderbilt University Nashville Tennessee USA Department of Pharmacology New York Medical College Valhalla New York USA Entomology and cancer center University of California Davis California USA NIH/NIEHS Research Triangle Park North Carolina USA

The cardiovascular effects of vitamin c (Vitc) could be mediated by epoxyeicosatrienoic acids (EETs). We aimed to study the mechanism of Vitc-dependent microsomal formation of cis- and trans-EETs and the regulation of EET levels in rat isolated perfused kidneys and in vivo. Vitc biphasically stimulated rat kidney microsomal cis- and trans-EET formation in a ratio of 1:2, involving the participation of lipid hydroperoxides (LOOHs), Fe2+ , and cytochrome P450 (cYP). Levels of LOOHs correlated with microsomal EET production. LOOH stimulation of cYP isoforms resulted in preferred trans- over cis-EET formation from arachidonic acid and was associated with the cleavage of LOOHs, which indicated a cYP peroxy-genase activity. EETs contributed to Vitc-induced vasodilator responses in rat isolated perfused kidneys. Vitc (1 mg/ml) given in the drinking water for 9 days doubled rat urinary EET excretion, increased plasma levels of EETs, mostly trans-EETs, by 40%, and reduced plasma levels of 20-hydroxyeicosatetraenoic acid. Depletion of Vitc in brain cortex and kidney tissues by more than 20- and 50-fold, respectively, in gulonolactone oxidase-knockout mice was associated with mild increases in tissue EETs. These data suggest that LOOHs are a determinant factor for EET formation in vivo in which Vitc exerts a key regulatory effect. Vitc-activated cYP peroxygenase activity may represent a cYP interaction with lipoxygenases and cyclooxygenases to mediate the cardiovascular effects of Vitc via formation of EETs.

关键词： Vitamin c Epoxyeicosatrienoic Acids cytochrome P450 Lipid Hydroperoxides Peroxygenase

高眼压和开角型青光眼的治疗：随机对照试验的汇总分析

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英国医学杂志中文版 2005年第5期8卷 321-322页

作者： Philip c Maier Jens Funk Guido Schwarzer Gerd Antes Yngve T falck- Ytter 周崎（译）

目的：开角型青光眼是工业化国家最常见的致盲性眼病之一。尽管El前还有争议，降低眼压仍然广泛应用于青光眼的预防和治疗。

关键词：开角型青光眼随机对照试验汇总分析治疗高眼压致盲性眼病工业化国家低眼压

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由耐热木聚糖酶从硬木和谷物木聚糖中生成低聚木糖作为短乳杆菌和青春双歧杆菌的碳源

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国外畜牧学（猪与禽） 2014年第2期34卷 8-13页

作者：陶莉南雪何闪 Peter falck Suthsiri Precha-Atsawanan carl Grey 瑞士隆德大学化学系

为了比较农业生产型林业中的木聚糖,使用木聚糖RmXyn10A的两种变体,只有源自海洋红嗜热盐菌的全长酶和催化模块,对硬木(桦木)木聚糖和谷物(黑麦)阿拉伯木聚糖进行水解。用含有水解产物的低聚木糖(XOS)作为碳源,培养4种精选的细菌菌种,... 详细信息

为了比较农业生产型林业中的木聚糖,使用木聚糖RmXyn10A的两种变体,只有源自海洋红嗜热盐菌的全长酶和催化模块,对硬木(桦木)木聚糖和谷物(黑麦)阿拉伯木聚糖进行水解。用含有水解产物的低聚木糖(XOS)作为碳源,培养4种精选的细菌菌种,结果显示了短乳杆菌DSMZ 1264和青春双歧杆菌ATcc 15703出现选择性生长。这两种菌株被证实可利用低聚木糖组分(DP 2-5);而来自黑麦阿拉伯木聚糖水解产物的假定阿拉伯低聚木糖仅能被青春双歧杆菌利用。大肠杆菌不能生长,但能在单糖阿拉伯糖和木糖上生长。研究还表明,小片球菌(Pediococcus parvulus)2.6株既不能利用木糖,也不能利用低聚木糖进行生长。总之,RmXyn10A或其催化模块证实可用于硬木木聚糖和谷物阿拉伯木聚糖的高温水解,产生XOS,因此能在功能性食品中充当益生元。

关键词：黑麦阿拉伯木聚糖 GH10木聚糖酶短乳杆菌青春双歧杆菌低聚木糖

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