نتایج جستجو برای: منحنی های dsc
تعداد نتایج: 488050 فیلتر نتایج به سال:
در این تحقیق آلیاژهای نایتینول در دمای 1050 درجه سانتیگراد و در زمان های 1، 2، 4، 7 و 10 ساعت تف جوشی شدند. سپس نمونه های تف جوشی شده تحت بررسی های متالوگرافی، آنالیز فازی اشعه x (xrd)، آزمون های فشاری و گرماسنجی افتراقی (dsc) قرار گرفتند. مطالعات ساختاری نشان دادند که با افزایش زمان تف جوشی، niti فاز غالب خواهد شد و شدت پیک های فاز ni3ti کم می شود؛ اما امکان حذف کامل آن ها ضعیف است. بررسی های ...
This paper deals with the application of distributed source coding (DSC) theory to remote sensing image compression. Although DSC exhibits a significant potential in many application fields, up till now the results obtained on real signals fall short of the theoretical bounds, and often impose additional system-level constraints. The objective of this paper is to assess the potential of DSC for...
The interaction of native xanthan gum, deacetylated xanthan gum and depyruvated xanthan gum with konjac glucomannan has been studied using DSC and controlled stress rheometry. In the absence of electrolyte the DSC cooling curves for native xanthan and deacetylated xanthan showed a single peak and there was a corresponding sharp increase in the storage modulus indicating gel formation. It is app...
Performance Evaluation of Distributed Source Coding for Lossless Compression of Hyperspectral Images
This paper deals with the application of distributed source coding (DSC) theory to remote sensing image compression. Although DSC exhibits a significant potential in many application fields, up to now the results obtained on real signals fall short of the theoretical bounds, and often impose additional system-level constraints. The objective of this paper is to assess the potential of DSC for o...
INTRODUCTION: Dynamic susceptibility contrast MRI (DSC-MRI) is a novel tool that has shown promise to increase the predictive power of diagnostic imaging, for example in the assessment of brain tumor grade [1]. Alterations in microvascular parameters such as blood volume and vascular permeability induced by pathological angiogenesis are detectable with DSC-MRI. However, the basic assumptions of...
The ability of stem cells to self-renew as well as their multilineage differentiation potential makes them ideal candidates for skin regeneration strategies. Mesenchymal stem cells residing in human adult dermis, in contrast to adipose tissue, have not yet been described. The objective of this study was to determine the stemness and chemokine-mediated homing potential of dermal stromal cells (D...
OBJECTIVE The added value of perfusion MRI for decision-making in vestibular schwannoma (VS) patients is unknown. MRI offers two perfusion methods: the first employing contrast agent (dynamic susceptibility contrast (DSC)-MRI) that provides information on cerebral blood volume (CBV) and cerebral blood flow (CBF), the second by magnetic labeling of blood (arterial spin labeling (ASL)-MRI), provi...
Many video compression schemes (e.g., the recent H.264/AVC standard) and volumetric image coding algorithms are based on a closed-loop prediction (CLP) framework. While CLP based schemes can achieve state-of-the-art coding efficiency, they are inadequate in addressing some important emerging applications such as wireless video, multiview video, etc, which have new requirements including low com...
Laboratory measurements on polymer raw materials and products are often carried out (quasi-) isothermally, or at best at relatively slow cooling and heating rates. Such conditions differ greatly from those occurring during processing and during the products use in real life. During processing, high cooling rates and high pressures are common, the parameters of which have a major influence on t...
BACKGROUND AND PURPOSE The usefulness of arterial spin-labeling for the evaluation of the effect of the antiangiogenic therapy has not been elucidated. Our aim was to evaluate the antiangiogenic effect of bevacizumab in a rat glioblastoma model based on arterial spin-labeling perfusion MR imaging. MATERIALS AND METHODS DSC and arterial spin-labeling perfusion MR imaging were performed by usin...
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