نتایج جستجو برای: روش الکترومغناطیس vlf

تعداد نتایج: 371092  

Journal: :Physiological genomics 2008
Matthew T Flowers Mark P Keller YounJeong Choi Hong Lan Christina Kendziorski James M Ntambi Alan D Attie

We previously reported that mice deficient in stearoyl-CoA desaturase-1 (Scd1) and maintained on a very low-fat (VLF) diet for 10 days developed severe loss of body weight, hypoglycemia, hypercholesterolemia, and many cholestasis-like phenotypes. To better understand the metabolic changes associated with these phenotypes, we performed microarray analysis of hepatic gene expression in chow- and ...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 2010
Arsen S Hunanyan Guillermo García-Alías Valentina Alessi Joel M Levine James W Fawcett Lorne M Mendell Victor L Arvanian

Chronic unilateral hemisection (HX) of the adult rat spinal cord diminishes conduction through intact fibers in the ventrolateral funiculus (VLF) contralateral to HX. This is associated with a partial loss of myelination from fibers in the VLF (Arvanian et al., 2009). Here, we again measured conduction through the VLF using electrical stimulation while recording the resulting volley and synapti...

Journal: :Cardiovascular research 2008
Fanny Desjardins Irina Lobysheva Michel Pelat Bernard Gallez Olivier Feron Chantal Dessy Jean-Luc Balligand

AIMS In endothelial cells, caveolin-1 (cav-1) is known to negatively modulate the activation of endothelial nitric oxide synthase, a key regulator of blood pressure (BP). However, the impact of genetic alteration of cav-1 on vascular nitric oxide (NO) production and BP homeostasis in vivo is unknown. METHODS AND RESULTS We used spectral analysis of systolic blood pressure (SBP) variability in...

2007
U. S. Inan M. Golkowski M. K. Casey R. C. Moore W. Peter P. Kulkarni P. Kossey E. Kennedy S. Meth P. Smit

[1] Ionospheric effects of energetic electron precipitation induced by controlled injection of VLF signals from a ground based transmitter are observed via subionospheric VLF remote sensing. The 21.4 kHz NPM transmitter in Lualualei, Hawaii is keyed ON-OFF in 30 minute periodic sequences. The same periodicity is observed in the amplitude and phase of the sub ionospherically propagating signals ...

2006
R. C. Moore U. S. Inan T. F. Bell

[1] We present detailed observations of the onset of amplitude saturation in ELF/VLF waves generated via modulated HF heating of naturally-forming, large-scale current systems, such as the auroral electrojet. Broadband ELF/VLF measurements at a ground-based receiver located near the High-Frequency Active Auroral Research Program (HAARP) HF transmitter in Gakona, Alaska, exhibit variations in si...

ژورنال: :مکانیک سازه ها و شاره ها 0
اسماعیل عشقی کارشناس ارشد، گروه مهندسی مکانیک، دانشگاه فردوسی مشهد دکتر کدخدایان استاد، گروه مهندسی مکانیک، دانشگاه فردوسی مشهد

سرعت بالا و عدم کنترل دقیق بر توزیع فشار،شکل دهی الکترومغناطیس ورق به درون قالب را محدود به هندسه های ساده با عمق کم کرده است. می توان با استفاده از پانچ محدب به جای قالب مقعر عمق بیشتری برای ورق بدست آورد. در این مقاله شکل دهی الکترومغناطیس ورق به روی پانچ محدب و به درون قالب مقعر بررسی شده است. بخش الکترومغناطیس مسئله بصورت تحلیلی و بخش مکانیکی بصورت عددی با کمک نرم افزار آباکوس به روش اجزا م...

2004
A. SCHIENLE R. STARK

Ð The living organism is constantly affected by natural electromagnetic influences covering a wide range of frequencies and amplitudes. One of these influences, with frequencies in the very low frequency (VLF) range, (1-100 kHz) is represented by a phenomenon called VLF-atmospherics or VLF-sferics. Sferics are very short, weak, and dampened electromagnetic impulses generated by atmospheric disc...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1999
B Fedirchuk P Wenner P J Whelan S Ho J Tabak M J O'Donovan

We examined the effects of spontaneous or evoked episodes of rhythmic activity on synaptic transmission in several spinal pathways of embryonic day 9-12 chick embryos. We compared the amplitude of synaptic potentials evoked by stimulation of the ventrolateral funiculus (VLF), the dorsal or ventral roots, before and after episodes of activity. With the exception of the short-latency responses ev...

2012
Craig J. Rodger Mark A. Clilverd Andrew J. Kavanagh Clare E. J. Watt Pekka T. Verronen Tero Raita

[1] In order to make best use of the opportunities provided by space missions such as the Radiation Belt Storm Probes, we determine the response of complementary subionospheric radiowave propagation measurements (VLF), riometer absorption measurements, cosmic noise absorption, and GPS-produced total electron content (vTEC) to different energetic electron precipitation (EEP). We model the relati...

Journal: :Data Science Journal 2009
Yoshiya Kasahara A. Hirano Y. Takata

As the total amount of data measured by scientific spacecraft is drastically increasing, it is necessary for researchers to develop new computation methods for efficient analysis of these enormous datasets. In the present study, we propose a new algorithm for similar data retrieval. We first discuss key descriptors that represent characteristics of the VLF/ELF waves observed by the Akebono spac...

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