نتایج جستجو برای: آزمایشهای pvt

تعداد نتایج: 3389  

2018
Paolo Magistri Giuseppe Tarantino Tiziana Olivieri Annarita Pecchi Roberto Ballarin Fabrizio Di Benedetto

Background In the context of cirrhosis, portal vein thrombosis (PVT) is present in 2.1% to 26% of patients. PVT is no longer considered an absolute contraindication for liver transplantation, and nowadays, surgical strategies depend on the extent of PVT. Complete PVT is associated with higher morbidity rates and poor prognosis, while comparable long-term outcomes can be achieved as long as phys...

Journal: :Journal of sleep research 2012
Srinivasan Rajaraman Sridhar Ramakrishnan David Thorsley Nancy J Wesensten Thomas J Balkin Jaques Reifman

We have developed a new psychomotor vigilance test (PVT) metric for quantifying the effects of sleep loss on performance impairment. The new metric quantifies performance impairment by estimating the probability density of response times (RTs) in a PVT session, and then considering deviations of the density relative to that of a baseline-session density. Results from a controlled laboratory stu...

2017
Fidel Manuel Caceres-Loriga

We read with great interest the article published in Anatolian Journal of Cardiology by Astarcıoğlu et al. (1) entitled “ABO blood types: impact on development of prosthetic mechanical valve thrombosis.” Several risk factors of prosthetic valve thrombosis (PVT) are well known. The search for new categories of risks should continue to refine even more the initial therapeutic decision in PVT. In ...

Journal: :Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology 2006
Sanjay Sharma Sirish I Kumar Ujjal Poddar S K Yachha Rakesh Aggarwal

BACKGROUND Extra-hepatic portal vein obstruction due to portal vein thrombosis (PVT) is an important cause of portal hypertension in several regions including India. The cause of thrombosis in these patients remains unclear. We studied the frequency of mutations in genes for coagulation factors V and II (prothrombin) in 61 Indian patients with PVT and 49 healthy control subjects. METHODS The ...

Journal: :Language, speech, and hearing services in schools 2013
Sarita L Eisenberg Ling-Yu Guo

PURPOSE This study compared the diagnostic accuracy of a general grammaticality measure (i.e., percentage grammatical utterance; PGU) to 2 less comprehensive measures of grammaticality--a measure that excluded utterances without a subject and/or main verb (i.e., percentage sentence point; PSP) and a measure that looked only at verb tense errors (i.e., percentage verb tense usage; PVT)--in diffe...

Journal: Gas Processing 2014

Finding a representative fluid in a hydrocarbon reservoir is crucial for integrated reservoir management. In this study, a systematic approach for screening and selecting consistent fluid samples in a reservoir was developed. The model integrated quality control (QC) of well conditioning before sampling, QC of PVT data, thermodynamic modeling and compositional gradient within a reservoir. Well ...

2018
David Blaauw Sudherssen Kalaiselvan Kevin Lai Wei-Hsiang Ma Sanjay Pant Carlos Tokunaga Shidhartha Das David Bull

Performance variation due to PVT uncertainty has led to an increased interest in adaptive designs. Traditional methods for adaptive design have used so-called canary circuits that mimic the critical-path delay of the actual design [1-4]. However, canary circuits require safety margins for possible mis-tracking and intradie PVT variations. They also have difficulty responding to rapidly changing...

2014
PEDRO VAZ COKE Pedro Vaz Coke

Today virtually every consumer electronics device contains one or more integrated circuits (ICs) that require clock signal generation. This signal must present a certain level of frequency stability even in non-nominal conditions. Ideally, the clock generator block should exhibit a reasonably low frequency deviation when subject to process, voltage, and temperature (PVT) variations, such as cha...

2014
Joshua L. Haight Shelly B. Flagel

There is ample evidence to suggest that the paraventricular nucleus of the thalamus (PVT) mediates cue-reward learning, especially as it relates to drug-seeking behavior. However, its exact role in these complex processes remains unknown. Here we will present and discuss data from our own laboratory which suggests that the PVT plays a role in multiple forms of stimulus-reward learning, and does...

Journal: :gas processing 0
shahab gerami eor institute, national iranian oil company, tehran, iran mahboobeh kiani zakheradi department of chemical engineering, faculty of petroleum, gas and petrochemical engineering, persian gulf university, bushehr, iran reza azin department of petroleum engineering, faculty of petroleum, gas, and petrochemical engineering, persian gulf university, bushehr, iran shahriar osfouri department of chemical engineering, faculty of petroleum, gas and petrochemical engineering, persian gulf university, bushehr, iran

finding a representative fluid in a hydrocarbon reservoir is crucial for integrated reservoir management. in this study, a systematic approach for screening and selecting consistent fluid samples in a reservoir was developed. the model integrated quality control (qc) of well conditioning before sampling, qc of pvt data, thermodynamic modeling and compositional gradient within a reservoir. well ...

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