نتایج جستجو برای: منطق pwr

تعداد نتایج: 8101  

ژورنال: :پژوهش های فلسفی کلامی 2008
اسداله فلاحی لطف اله نبوی

قضایا و قواعد منطق موجهات، در جهان های ممکن، معتبرند اما قضایای منطق ربط، در جهان های منطقی، و قواعد آن، در وضعیت ها اعتبار دارند. روبرت مایر، در سال 1974، به کمک ادات های صدق و کذب ویلهم آکرمان، نظامی در منطق ربط طراحی کرد که قضایا و قواعد آن، هر دو، در وضعیت ها معتبر بودند و به این وسیله، عدم تقارن موجود در منطق ربط میان قضایا و قواعد را از میان برد. در این مقاله، با معرفی نوع جدیدی از ادات ه...

Journal: :American journal of physiology. Heart and circulatory physiology 2004
Soren Schenk Zoran B Popović Yoshie Ochiai Fernando Casas Patrick M McCarthy Randall C Starling Michael W Kopcak Raymond Dessoffy Jose L Navia Neil L Greenberg James D Thomas Kiyotaka Fukamachi

Right ventricular (RV) maximal power (PWR(mx)) is dependent on preload. The objective of this study was to test our hypothesis that the PWR(mx) versus end-diastolic volume (EDV) relationship, analogous to the load-independent stroke work (SW) versus EDV relationship (preload-recruitable SW, PRSW), is linear, with the PWR x-axis intercept (V(0PWR)) corresponding to the PRSW intercept (V(0SW)). I...

2001
Won Il KO Dong KIM

This study compares the proliferation resistance of DUPIC (Direct Use of Spent PWR Fuel in CANDU) fuel cycle with other fuel cycle cases. The other fuel cycles considered in this study are PWR of once-through mode (PWR-OT), PWR of reprocessing mode (PWR-MOX), in which spent PWR fuel is reprocessed and recovered plutonium is used for making MOX (Mixed Oxide), CANDU with once-through mode (CANDU-...

2013
Audun E Rimehaug Oddveig Lyng Dag O Nordhaug Lasse Løvstakken Petter Aadahl Idar Kirkeby-Garstad

Cardiac power (PWR) is the continuous product of flow and pressure in the proximal aorta. Our aim was to validate the PWR integral as a marker of left ventricular energy transfer to the aorta, by comparing it to stroke work (SW) under multiple different loading and contractility conditions in subjects without obstructions in the left ventricular outflow tract. Six pigs were under general anesth...

2003
George Candea Armando Fox

Crash-only component has PWR switch: stop=crash clean shutdown loss of power kernel panic cure transient failure Only one way to go down only one way to come up: start = recover Each component must has a PWR switch uniform behavior Crash-only system = assembly of crash-only components; system PWR switch implemented in terms of components' switches PWR switch is external, does not invoke compone...

2015
Kalpana Chhetri

Background: Studies have established placental weight ratio (PWR) as a relevant marker of fetal uteroplacental function which reflects whether the fetal and placental growth is proportionate. It decreases across gestation as the placental growth slows and fetal growth accelerates. Preeclampsia and preterm birth are both risk factors of small for gestational age (SGA) off springs with the smalle...

Journal: :CoRR 2014
Loet Leydesdorff Wouter de Nooy Lutz Bornmann Gangan Prathap

Ramanujacharyulu’s (1964) Power-Weakness Ratio (PWR) measures impact by recursively multiplying the citation matrix by itself until convergence is reached in both the cited and citing dimensions; the quotient of these values is defined as PWR, whereby “cited” is considered as power and “citing” as weakness. Analytically, PWR is an attractive candidate for measuring journal impact because of its...

2014
Erin M. Macdonald John J. Koval Renato Natale Timothy Regnault M. Karen Campbell

The placental weight ratio (PWR) is a health indicator that reflects the balance between fetal and placental growth. The PWR is defined as the placental weight divided by the birth weight, and it changes across gestation. Its ranges are not well established. We aimed to establish PWR distributions by gestational age and to investigate whether the PWR distributions vary by fetal growth adequacy,...

2018
Celine Tasset Avilash Singh Yadav Sridevi Sureshkumar Rupali Singh Lennard van der Woude Maxim Nekrasov David Tremethick Martijn van Zanten Sureshkumar Balasubramanian

Ambient temperature affects plant growth and even minor changes can substantially impact crop yields. The underlying mechanisms of temperature perception and response are just beginning to emerge. Chromatin remodeling, via the eviction of the histone variant H2A.Z containing nucleosomes, is a critical component of thermal response in plants. However, the role of histone modifications remains un...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2016
Yun Ju Kim Ruozhong Wang Lei Gao Dongming Li Chi Xu Hyunggon Mang Jien Jeon Xiangsong Chen Xuehua Zhong June M Kwak Beixin Mo Langtao Xiao Xuemei Chen

Histone acetylation is a major epigenetic control mechanism that is tightly linked to the promotion of gene expression. Histone acetylation levels are balanced through the opposing activities of histone acetyltransferases (HATs) and histone deacetylases (HDACs). Arabidopsis HDAC genes (AtHDACs) compose a large gene family, and distinct phenotypes among AtHDAC mutants reflect the functional spec...

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