نتایج جستجو برای: frequency response analysis fra

تعداد نتایج: 3952772  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده فیزیک 1390

in this thesis, barium ferrite nano particles were prepared by sol-gel method. their structural and magnetic properties of samples have been investigated using thermo gravimetric analysis (tg-dta), x-ray powder diffractometer (xrd), fourier transform infrared (ftir), scanning electron microscopy (sem), field emission scanning electron microscopy (fesem), ac susceptometer, vibrating sample magne...

Journal: :Analytical chemistry 2013
Kwang-Mo Nam Dong-Hyup Shin Namchul Jung Moon G Joo Sangmin Jeon Su-Moon Park Byoung-Yong Chang

Here, we report development of the galvanostatic Fourier transform electrochemical impedance spectroscopy (FTEIS), which monitors impedance of electrochemical reactions activated by current steps. We first derive relevant relations for potential change upon application of a step current, obtain impedances theoretically from the relations by simulation, and verify them with experimental results....

Journal: :Revista da Sociedade Brasileira de Medicina Tropical 2016
Ana Karine de Araújo Soares Patrícia Areias Feitosa Neves Maria da Glória Aureliano de Melo Cavalcanti Sílvia Martins Marinho Wilson de Oliveira Joelma Rodrigues de Souza Virginia Maria Barros de Lorena Yara de Miranda Gomes

INTRODUCTION The relationships between monocytes and lymphocytes through MHC class II molecules and costimulatory, are of utmost importance for the production of an efficient immune response. In this work, we assessed the expression of surface molecules CD80 and CD86 on CD14+HLA-DR+ monocytes from patients with Chagas disease. METHODS: The study population consisted of 31 patients with chroni...

Journal: :Energy Engineering 2023

Winding is one of the most important components in power transformers. Ensuring health state winding great importance to stable operation system. To efficiently and accurately diagnose disc space variation (DSV) fault degree transformer winding, this paper presents a diagnostic method based on K-Nearest Neighbor (KNN) algorithm frequency response analysis (FRA) method. First, laboratory model u...

Journal: :American journal of physiology. Lung cellular and molecular physiology 2004
Qin Zhang Steven R Kleeberger Sekhar P Reddy

Recent studies indicate a potential role for Fra-1, a heterodimeric partner of activator protein (AP)-1, in toxicant-induced epithelial injury, repair, and cellular transformation. Here we have investigated the effects of diesel exhaust particles (DEP) on fra-1 expression in C10 cells, a murine lung epithelial cell line. DEP markedly upregulated fra-1, but not fra-2, expression. The increase in...

Journal: :Journal of Korean Medical Science 1993
H. R. Moon S. Y. Moon

The fragile X syndrome is a common X-linked mental retardation and autism, affecting females as well as males. The fragile site X chromosomes were studied in a series of 153 mentally retarded boys of unknown etiology to determine the frequency of fragile X syndrome, and to assess the feasibility of making a clinical diagnosis of the fragile X syndrome in young boys before cytogenetic results we...

In the present paper, the aeroelastic stability of helicopter rotor blade is determined using Aeroelastic Frequency Response Function. The conventional methods of aeroelastic stability usually use an iterative procedure while the present method does not require such approach. Aeroelastic Frequency Response Functions are obtained by inverting dynamic stiffness matrix of the aeroelastic system. S...

Journal: :journal of applied and computational mechanics 2015
mostafa mohagheghi ali salehzadeh nobari alireza seyed roknizadeh

in the present paper, the aeroelastic stability of helicopter rotor blade is determined using aeroelastic frequency response function. the aeroelastic model of blade is obtained by combining dowell - hodges beam model with loewy unsteady aerodynamic theory which considers an unsteady wake beneath the rotor. equations are formed and aeroelastic frequency response functions are obtained by invert...

Journal: :The EMBO journal 2007
Laura Casalino Latifa Bakiri Francesco Talotta Jonathan B Weitzman Alfredo Fusco Moshe Yaniv Pasquale Verde

Fra-1 is frequently overexpressed in epithelial cancers and implicated in invasiveness. We previously showed that Fra-1 plays crucial roles in RAS transformation in rat thyroid cells and mouse fibroblasts. Here, we report a novel role for Fra-1 as a regulator of mitotic progression in RAS-transformed thyroid cells. Fra-1 expression and phosphorylation are regulated during the cell cycle, peakin...

Journal: :Neuron 1999
Jonathan R. Terman Alex L. Kolodkin

branch of the Ig superfamily, but they differ from DCC proteins in the number of extracellular Ig and fibronectin domains and share no similarity over their large cyto-The past several years have seen a revolution in our plasmic domains. Using the well-characterized Dro-understanding of how axons find their targets during sophila midline, Bashaw and Goodman (1999) recog-neural development. Thes...

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