نتایج جستجو برای: several structures

تعداد نتایج: 1266012  

J. de Andres-Sanchez L. Gonzalez-Vila Puchades

The concept of fuzzy random variable has been applied in several papers to model the present value of life insurance liabilities. It allows the fuzzy uncertainty of the interest rate and the probabilistic behaviour of mortality to be used throughout the valuation process without any loss of information. Using this framework, and considering a triangular interest rate, this paper develops closed...

Studies have shown that estradiol-17β (E2) regulates gonadotropin-releasing hormone (GnRH) and GnRH receptor expression in hypothalamus and pituitary. Several studies have shown that GnRH and its receptor are also expressed in peripheral reproductive organs and little is known about their regulations. In this study, GnRH and GnRH receptor structures, functions, their peripheral expressions and ...

2012
Georges CHAPOUTHIER

Biocosmology implies that the laws of the microcosm (i.e. the laws governing living beings and their minds) mimic the laws of the macrocosm. These laws are based on a mosaic structure and triune organisation, with some roots that may be in the classical dialectical movement. A number of modern stances can be seen in relation to the Biocosmological perspective. The relationship to the mosaic str...

2002
Yan Wang Kian-Lee Tan Xiaolin Pang

For mobile agents to be effective in practice, they have to be securely and efficiently deployed. In this paper, we propose and discuss several route structures and methods for mobile agents that are dispatched in parallel. These schemes can protect the route information against malicious hosts and facilitate the dispatching of a large number of agents in parallel efficiently. Under noncollusio...

Journal: :iranian journal of science and technology transactions of civil engineering 2015
m. saberi a. kaveh

changes in dynamic properties of structures indicate occurrence of damages in the structures. in this paper, a new two stage algorithm for damage detection of large structure is introduced. a modified residual force method is utilized to locate the damage regions in structures, especially barrel vaults, and then the enhanced charged system search (css) algorithm is used to quantify the amount o...

Journal: :تابش و فناوری هسته ای 0
غلامرضا زارعی دانشکده مهندسی شیمی، نفت و گاز، دانشگاه سمنان، سمنان، ایران علی مالکی فارسانی سازمان انرژی اتمی ایران ، شرکت پسمانداری صنعت هسته ای ایران، تهران، ایران امیر حیدری سازمان انرژی اتمی ایران ، شرکت پسمانداری صنعت هسته ای ایران، تهران، ایران مسعود نصیری دانشکده مهندسی شیمی، نفت و گاز، دانشگاه سمنان، سمنان، ایران

in this paper, nano fibers (engelhard corporation titanosilicate number 10 / polyacrylonitrile) ets-10 / pan, as a composite exchanger to absorb heavy metals, were synthesized and optimized. several parameters were affected on this absorption. results show that the optimization sizes of the nano fibers are about 75 nanometers. structures were analyzed by scanning electron microscope (sem) and e...

Journal: :Journal of medical entomology 2001
M D Cruz M P Mateo

A comparative study was made of the structures of the preantennal region of nine species of Damalinia Mjöberg, 1910 (Phthiraptera: Trichodectidae). Variability in the form of the head, ventral carina, pulvinus, mandibles, and labrum was observed by light and scanning electron microscopy. According to previous studies, the form of the head is possibly influenced by the density and texture of the...

Journal: :Molecules 2017
Alejandro Castro-Alvarez Anna M Costa Jaume Vilarrasa

The accuracy of five docking programs at reproducing crystallographic structures of complexes of 8 macrolides and 12 related macrocyclic structures, all with their corresponding receptors, was evaluated. Self-docking calculations indicated excellent performance in all cases (mean RMSD values ≤ 1.0) and confirmed the speed of AutoDock Vina. Afterwards, the lowest-energy conformer of each molecul...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
David Bulkley C Axel Innis Gregor Blaha Thomas A Steitz

The increasing prevalence of antibiotic-resistant pathogens reinforces the need for structures of antibiotic-ribosome complexes that are accurate enough to enable the rational design of novel ribosome-targeting therapeutics. Structures of many antibiotics in complex with both archaeal and eubacterial ribosomes have been determined, yet discrepancies between several of these models have raised t...

2012
Michael Dreher Helmut Paulus

X-ray structures of five bis(N — R-salicylaldiminato)zinc(II) complexes with R — ethyl, «-propyl, /-propyl, «-butyl and 4-thia-rc-hexyl were determined. The N202 coordination geometry is in all cases gwas/-tetrahedral with the dihedral angle between the planes of the two chelate rings ranging from 84 to 89°. Bond lengths and angles in the coordination sphere are not affected by the nature of R ...

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