نتایج جستجو برای: 478 ngg dw

تعداد نتایج: 8061  

Journal: :AJNR. American journal of neuroradiology 2002
Ayeesha K Kamal Alan Z Segal Aziz M Uluğ

BACKGROUND AND PURPOSE The risk of stroke after a transient ischemic attack (TIA) is high. Appropriately directed therapies may reduce this risk. However, sensitive means of detecting the presence of subtle neuronal ischemia are lacking. We investigated the potential use of quantitative diffusion-weighted (DW) MR imaging in the detection of deficits produced by transient cerebral ischemia. ME...

2001
Dimitri Theodoratos Theodore Dalamagas Alkis Simitsis Manos Stavropoulos

A Data Warehouse (DW) can be used to integrate data from multiple distributed data sources. A DW can be seen as a set of materialized views that determine its schema and its content in terms of the schema and the content of the data sources. DW applications require high query performance. For this reason, the design of a typical DW consists of selecting views to materialize that are able to ans...

Neda Mehdipour, Neda Sheijooni Fumani, Reza Rahnama,

The nutritional values of the three Caspian Sea macroalgae species, Cladophora glomerata, Enteromorpha intestinalis and Laurencia caspica were evaluated based on proximate and fatty acid composition. The investigated species demonstrated low lipid composition (0.20±0.03- 1.62±0.26 % DW) and high carbohydrate (21.70±0.17-26.1±1.27%DW) and protein contents (13.34±2.41-28.08±0.51%DW). The as...

2009
Kab-Yeul Jang Soo-Muk Cho Soon-Ja Seok Won-Sik Kong Gyu-Hyun Kim Jae-Mo Sung

The process of biodegradation in lingo-cellulosic materials is critically relevant to biospheric carbon. The study of this natural process has largely involved laboratory investigations, focused primarily on the biodegradation and recycling of agricultural by-products, generally using basidiomycetes species. In order to collect super white rot fungi and evaluate its ability to degrade lingo-cel...

2010
P. Yan Z. Z. Sun J. Schliemann X. R. Wang

One of the important issues in nanomagnetism is to lower the current needed for a technologically useful domain wall (DW) propagation speed. Based on the modified LandauLifshitz-Gilbert (LLG) equation with both Slonczewski spin-transfer torque and the field-like torque, we derive an optimal temporally and spatially varying spin current pattern for fast DW propagation along nanowires. Under such...

Journal: :CoRR 2010
Nouha Arfaoui Jalel Akaichi

Nowadays, Data Warehouse (DW) plays a crucial role in the process of decision making. However, their design remains a very delicate and difficult task either for expert or users. The goal of this paper is to propose a new approach based on the clover model, destined to assist users to design a DW. The proposed approach is based on two main steps. The first one aims to guide users in their choic...

2009
K. L. MILLER G. DOUAUD S. JBABDI T. E. BEHRENS J. A. MCNAB

Figure 2: Tractography of the corticospinal tract (CST) for SE and SSFP with identical thresholding (1000 fibers). Tracts reach the cortex more reliably in SSFP, whereas the SE tracts end where the CST crosses the superior longitudinal facsciculus (SLF) and CC. Signal (% M0) Readout efficiency SNR efficiency DW-SE 5.15 % 6.73% 1.33% DW-SSFP 3.45 % 32.65% 1.97% Table 1: Signal for optimized DW-S...

2009
R. Stirnberg T. Stöcker N. Shah

Introduction: It was recently shown that a diffusion weighted Single-shot Stimulated Echo Acquisition Mode (DW ss-STEAM) pulse sequence is an alternative to the standard DW EPI at high fields [1-3]. By designing variable flip angles (vFA) for centric k-space acquisition without RF spoiling, more signal is utilised than usual. The iterative vFA-algorithm is based on the Extended Phase Graph form...

2014
Ryan Koenig Jonathan R Dickman Chounghun Kang Tianou Zhang Yi-Fang Chu Li Li Ji

During aging, chronic systemic inflammation increases in prevalence and antioxidant balance shifts in favor of oxidant generation. Avenanthramide (AVA) is a group of oat phenolics that have shown anti-inflammatory and antioxidant capability. The present study investigated whether dietary supplementation of avenanthramides (AVA) in oats would increase antioxidant protection and reduce inflammati...

2008
Chockchai Theerakulkait

The effects of rice bran extract (RBE) on browning in potato, banana and apple slices compared with distilled water (DW) were investigated by measuring the changes of color values. Potato slice treated with RBE had lower browning value than that treated with DW during storage 9 to 12 hrs (p≤0.05). The browning values of potato treated with RBE and DW stored for 12 hrs were 4.72 and 7.64, respec...

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