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Pleiotrophin expression in astrocytic and oligodendroglial tumors and it’s correlation with histological diagnosis, microvascular density, cellular proliferation and overall survival
Journal of Neuro-Oncology - Tập 84 - Trang 255-261 - 2007
Pleiotrophin (PTN) is a secreted cytokine with several properties related with tumor development, including differentiation, angiogenesis, invasion, apoptosis and metastasis. There is evidence that PTN has also a relevant role in primary brain neoplasms and its inactivation could be important to treatment response. Astrocytic and oligodendroglial tumors are the most frequent primary brain neoplasm... hiện toàn bộ
Hot extrusion of aluminum powder at low reduction ratios: Analytical and metallographic studies
Metallurgical Transactions B - Tập 18 - Trang 703-711 - 1987
This paper deals with an investigation into the flow of aluminum powder billet during hot extrusion at low reduction ratios through square edge die under axisymmetric conditions. Analytical studies using the finite element method as well as the experimental observations are reported for various low reduction ratios ranging from 1.3:1 to 3.2:1 at extrusion temperatures, 300, 400, and 500 °C; fricti... hiện toàn bộ
DFT study of glucose based glycolipid crown ethers and their complexes with alkali metal cations Na+ and K+
Journal of Molecular Modeling - Tập 18 - Trang 5041-5050 - 2012
A theoretical study of a series of five glucose based glycolipid crown ethers and their complexes with Na+ and K+ was performed using the density functional theory with B3LYP/6-31 G* to obtain the optimized geometrical structures and electronic properties. The local nucleophilicity of the five molecules was investigated using Fukui function, while the global nucleophilicity was calculated from the... hiện toàn bộ
Synthesis of new bi-2H-azirin-3-yl compounds from diazides
Tetrahedron Letters - Tập 26 - Trang 5261-5264 - 1985
Seasonal iron cycling in the salt-marsh sedimentary environment: the importance of ligand complexes with Fe(II) and Fe(III) in the dissolution of Fe(III) minerals and pyrite, respectively
Marine Chemistry - Tập 40 Số 1-2 - Trang 81-103 - 1992
How can energy become a community endeavor in Europe? Consortium benchmarking strategies for the mobilization of collective action initiatives
Energy Research & Social Science - Tập 98 - Trang 103005 - 2023
Production of N2through Anaerobic Ammonium Oxidation Coupled to Nitrate Reduction in Marine Sediments
Applied and Environmental Microbiology - Tập 68 Số 3 - Trang 1312-1318 - 2002
ABSTRACTIn the global nitrogen cycle, bacterial denitrification is recognized as the only quantitatively important process that converts fixed nitrogen to atmospheric nitrogen gas, N2, thereby influencing many aspects of ecosystem function and global biogeochemistry. However, we have found that a process novel to the marine nitrogen cycle, anaerobic oxidation of ammonium coupled to nitrate reducti... hiện toàn bộ
Adherence to antihypertensives medications, including combinations, in primary care
Springer Science and Business Media LLC - Tập 170 - Trang 108-108 - 2001
Sự hội tụ của các chuỗi Markov đối xứng trên $${\mathbb{Z}^d}$$ Dịch bởi AI
Springer Science and Business Media LLC - Tập 148 - Trang 107-140 - 2009
Với mỗi n, ký hiệu $${Y^{(n)}_t}$$ là một chuỗi Markov đối xứng liên tục theo thời gian với không gian trạng thái $${n^{-1} \mathbb{Z}^d}$$ . Các điều kiện liên quan đến tính dẫn điện được đưa ra để đảm bảo sự hội tụ của $${Y^{(n)}_t}$$ về một quá trình Markov đối xứng Y t trên $${\mathbb{R}^d}$$ . Chúng tôi có sự hội tụ yếu của $$\{{Y^{(n)}_t: t \leq t_0\}}$$ cho mọi t 0 và mọi điểm khởi đầu. Quá... hiện toàn bộ
#chuỗi Markov #hội tụ #quá trình Markov đối xứng #không gian trạng thái
On Judging the Significance of Differences by Examining the Overlap Between Confidence Intervals
American Statistician - Tập 55 Số 3 - Trang 182-186 - 2001
Tổng số: 15,158,218   
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