نتایج جستجو برای: 2 b1
تعداد نتایج: 2538525 فیلتر نتایج به سال:
Introduction and Motivation Transmit (Tx)-SENSE performance depends crucially on the reliable knowledge of the B1 (+)-maps of the transmit coil elements. To speed up the whole imaging procedure true B1 (+)-mapping is often avoided by using the virtual reference approach [1]. This virtual reference is constructed from the sum-ofsquare images of all transmit and receive channels and is assumed to...
INTRODUCTION. Cardiac MRI may strongly benefit from high SNR at ultra-high fields (UHF) but is challenged by the short RF wavelength that induces large flip angle variations over the heart. This problem has been successfully addressed in 7T cardiac CINE imaging using parallel transmission (pTX) with 2-spoke pTX RF pulses [1]. Although 2 spokes can provide high contrast uniformity, we sometimes ...
Themolecular mechanisms underlying metastatic dissemination are still not completely understood.We have recently shown that b1 integrin-dependent cell adhesion to fibronectin and signaling is affected by a transmembrane molecule, Trop-2, which is frequently upregulated in human carcinomas. Here, we report that Trop-2 promotesmetastatic dissemination of prostate cancer cells in vivo and is abund...
One can prove the following propositions: (1) Let A, B be finite sequences and f be a function. Suppose rngA∪rngB ⊆ dom f. Then there exist finite sequences f1, f2 such that f1 = f · A and f2 = f · B and f · (A a B) = f1 a f2. (2) For every bag b of 0 holds decomp b = 〈〈∅, ∅〉〉. (3) For all natural numbers i, j and for every bag b of j such that i ¬ j holds b↾i is an element of Bags i. (4) Let i...
Diagnosis of metastatic breast cancer is associated with a very poor prognosis. New therapeutic targets are urgently needed, but their development is hampered by a lack of understanding of the mechanisms leading to tumor metastasis. Exemplifying this is the fact that the approximately 30% of all breast cancers overexpressing the receptor tyrosine kinase ErbB-2 are characterized by high metastat...
This paper describes a method for merging behavior specifications modeled by transition systems. Given two behavior specifications B1 and B2, Merge(B1, B2) defines a new behavior specification that extends B1 and B2. Moreover, provided that a necessary and sufficient condition holds, Merge(B1, B2) is a cyclic extension of B1 and B2. In other words, Merge(B1, B2) extends B1 and B2, and any cycli...
In this paper we study linear fractional relations defined in the following way. Let Bi, B′ i, i = 1, 2, be Banach spaces. We denote the space of bounded linear operators by L. Let T ∈ L(B1 ⊕ B2,B 1 ⊕ B′ 2). To each such operator there corresponds a 2 × 2 operator matrix of the form T = ( T11 T12 T21 T22 ) , (∗) where Tij ∈ L(Bj,B i), i, j = 1, 2. For each such T we define a set-valued map GT f...
Abstract In order to obtain and explore selenide composed of selenium polysaccharide, three parameters were selected optimize the synthesis process selenium- Euryale ferox Salisb. polysaccharide (Se-ESPS) by Box-Behnken design. Furthermore, ESPS-B1 separated from ESPS was selenitized Se-ESPS-B1 optimal process, then characterization, antioxidant activity in vitro explored. The result manifested...
BACKGROUND & AIMS Single large (>5 cm) hepatocellular carcinoma (HCC) is classified as Barcelona Liver Clinic (BCLC) stage early stage (A). Yet, controversies exist whether single large HCC can be considered as early stage. We have analyzed long-term outcome to see which stage is appropriate for these patients. METHODS From 2005 to 2006, 1,546 consecutive patients who were newly diagnosed as ...
BACKGROUND Long-term benefits of coronary stenosis treatment with an everolimus-eluting bioresorbable scaffold are unknown. OBJECTIVES This study sought to evaluate clinical and imaging outcomes 5 years after bioresorbable scaffold implantation. METHODS In the ABSORB multicenter, single-arm trial, 45 (B1) and 56 patients (B2) underwent coronary angiography, intravascular ultrasound (IVUS), ...
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