نتایج جستجو برای: toroidal cvt

تعداد نتایج: 7084  

2006
Uzma Usman Mohammad Wasay

The impact of CVT on the brain is wide spectrum, ranging from completely normal parenchyma to brain oedema and/or haemorrhage. Multiple factors relate to neuronal injury in CVT including; dural sinus pressure, increased venous flow velocities, collateralization of venous channels, rate of occlusion, development of cytotoxic and vasogenic oedema, recanalization and accelerated myelination. It is...

2006
John Burkardt Max Gunzburger Hyung-Chun Lee

A discussion of reduced-order modeling for complex systems such as fluid flows is given to provide a context for the construction and application of reduced-order bases. Reviews of the POD (proper orthogonal decomposition) and CVT (centroidal Voronoi tessellation) approaches to reduced-order modeling are provided, including descriptions of POD and CVT reduced-order bases, their construction fro...

2004
Valerie Purvin

Our understanding of cerebral venous thrombosis (CVT) has greatly increased in recent years due primarily to improved radiographic methods of diagnosis (1,2). Prior to the advent of modern neuroimaging, estimates of the incidence of cerebral venous thrombosis (CVT) relied largely on autopsy series (3,4). More recent studies that employ radiographic techniques have demonstrated a higher incidenc...

Journal: :JPMA. The Journal of the Pakistan Medical Association 2006
Uzma Usman Mohammad Wasay

The impact of CVT on the brain is wide spectrum, ranging from completely normal parenchyma to brain oedema and/or haemorrhage. Multiple factors relate to neuronal injury in CVT including; dural sinus pressure, increased venous flow velocities, collateralization of venous channels, rate of occlusion, development of cytotoxic and vasogenic oedema, recanalization and accelerated myelination. It is...

Journal: :Stroke 2005
Isabelle Crassard Claudine Soria Christophe Tzourio France Woimant Ludovic Drouet Anne Ducros Marie-Germaine Bousser

BACKGROUND AND PURPOSE Cerebral venous thrombosis (CVT) is an infrequent variety of cerebrovascular disease with a wide spectrum of clinical presentations and a notoriously difficult diagnosis. Previous reports have emphasized the potential clinical utility of D-dimer assay in CVT diagnosis. METHODS A rapid sensitive D-dimer assay was performed at entry in 73 patients with CVT <30 days durati...

2005
Qiang Du Max Gunzburger Lili Ju X. Wang

Centroidal Voronoi tessellations (CVT’s) are special Voronoi tessellations for which the generators of the tessellation are also the centers of mass (or means) of the Voronoi cells or clusters. CVT’s have been found to be useful in many disparate and diverse settings. In this paper, CVT-based algorithms are developed for image compression, image segmenation, and multichannel image restoration a...

2012
Tomas Nilsson Anders Fröberg Jan Åslund

Wheel loader transmissions are commonly based on a torque converter and an automatic gearbox. This solution is mechanically robust and well suited for the typical operation of the machine, but the fuel efficiency is low at some modes of operation. One proposed improvement is to replace the present transmission with a multi-mode power-split CVT (MM-CVT). This paper compares the fuel saving poten...

A toroidalization of a dominant morphism $varphi: Xto Y$ of algebraic varieties over a field of characteristic zero is a toroidal lifting of $varphi$ obtained by performing sequences of blow ups of nonsingular subvarieties above $X$ and $Y$. We give a proof of toroidalization of locally toroidal morphisms of 3-folds.

ژورنال: :فصلنامه علمی پژوهشی مهندسی مکانیک جامدات واحد خمینی شهر 0
محسن اصفهانیان استادیار، دانشگاه صنعتی اصفهان، دانشکده مهندسی مکانیک. محسن نیک بین کارشناس ارشد، مهندسی مکانیک طراحی کاربردی، دانشگاه آزاد اسلامی واحد خمینی شهر

در این مقاله به بررسی استفاده ی از گیربکسهای پیوسته متغیر (cvt) بر روی خودرو‫ی داخلی سمند پرداخته شده است. برای بررسی چگونگی استفاده از آن بررو‫ی خودرو‫ی سمند، این خودرو‫ با مکانیزم  cvt در محیط نرم افزار advisor شبیه ساز‫ی شده و سپس با سمند فعلی که دارا‫ی جعبه دنده معمولی است، مقا‫یسه شده است. سپس، به تحلیل نتا‫یج حاصل از عملکرد ا‫ین خودرو‫ی شبیه ساز‫ی شده پرداخته شده است. ‫این تحلیل شامل انتخ...

Journal: :JCPSP. Journal of the College of Physicians & Surgeons Pakistan 2021

Cortical venous thrombosis (CVT) mostly occurs due to a hypercoagulable state. Infection- related CVT is very rare and medical emergency associated with high mortality rate. It has been described bacterial fungal infections; but only few isolated case reports of tubercular meningitis (TBM) exist. Only six documentations CVT, as complication TBM, exist in the literature. Here, we report young gi...

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