نتایج جستجو برای: elf

تعداد نتایج: 2201  

2006
Shigeyuki Yamada

In order to clarify the activity of magnetic fields on their frequency against the body, inhibitory activity against vasomotion of mouse skin arterioles was observed using a intravital-microscope after exposing the mouse whole body to 0.46 mT magnetic fields of extremely low frequency (ELF-MF: 25, 50 and 100 Hz) and direct current (DC-MF) which are approximately 10 times as strong as terrestria...

2008

ELF/VLF waves can be generated via amplitude modulated HF heating of the auroral electrojet, which turns a patch of ionospheric currents into a radiating antenna. A new, more powerful technique, termed `geometric modulation', involves scanning the HF beam in geometric patterns with no power modulation. Utilizing results obtained from the HAARP facility, we show that geometric modulation enhance...

Journal: :The journal of medical investigation : JMI 2008
Akira Soda Toshitaka Ikehara Yohsuke Kinouchi Kazuo Yoshizaki

The effect of exposure to extremely low frequency-electromagnetic field (ELF-EMF: 3 mT, 60 Hz) on differentiation of mouse osteoblast-like MC3T3-E1 cells was examined together with addition of insulin-like growth factor I (IGF-I). As a marker of the differentiation, the cellular collagen content was determined by the absorbance of Sirius red-stained cells measured at the wavelength of 510-520 n...

Journal: :Journal of physiology and pharmacology : an official journal of the Polish Physiological Society 2010
A Goraca E Ciejka A Piechota

Increasing production of free radicals in organisms is one of the putative mechanisms by which a extremely low frequency magnetic field (ELF-MF) may affect biological systems. The present study was designated to assess if ELF-MF applied in the magnetotherapy, affects generation of reactive oxygen species (ROS) in heart tissue and antioxidant capacity of plasma according to its working time. The...

Journal: :Journal of hepatology 2012
Gonzalo Crespo Guillermo Fernández-Varo Zoe Mariño Gregori Casals Rosa Miquel Stella M Martínez Rosa Gilabert Xavier Forns Wladimiro Jiménez Miquel Navasa

BACKGROUND & AIMS Our aim was to evaluate a serologic marker (ELF) and two ultrasound-based methods (FibroScan and ARFI), as well as their combinations, in the assessment of liver fibrosis. METHODS One-hundred and forty-six patients (87 liver transplant recipients, 59 non-transplant patients) who underwent liver biopsy were prospectively included. We evaluated the diagnostic accuracy of Fibro...

2012
Yonghua Cui Zhiqiang Ge Joshua Dominic Rizak Chao Zhai Zhu Zhou Songjie Gong Yi Che

The exposures to extremely low frequency magnetic field (ELF-MF) in our environment have dramatically increased. Epidemiological studies suggest that there is a possible association between ELF-MF exposure and increased risks of cardiovascular disease, cancers and neurodegenerative disorders. Animal studies show that ELF-MF exposure may interfere with the activity of brain cells, generate behav...

Journal: :The British journal of nutrition 2010
Tomoji Ono Michiaki Murakoshi Noriyuki Suzuki Norio Iida Motoyasu Ohdera Masaaki Iigo Toshihide Yoshida Keikichi Sugiyama Hoyoku Nishino

Lactoferrin (LF), a multifunctional glycoprotein in mammalian milk, is reported to exert a modulatory effect on lipid metabolism. The aim of the present study was to elucidate whether enteric-coated LF (eLF) might improve visceral fat-type obesity, an underlying cause of the metabolic syndrome. Using a double-blind, placebo-controlled design, Japanese men and women (n 26; aged 22-60 years) with...

2015
Yong Liu Wen-bin Liu Kai-jun Liu Lin Ao Julia Li Zhong Jia Cao Jin-yi Liu

Previous studies have shown that the male reproductive system is one of the most sensitive organs to electromagnetic radiation. However, the biological effects and molecular mechanism are largely unclear. Our study was designed to elucidate the epigenetic effects of 50 Hz ELF-EMF in vitro. Mouse spermatocyte-derived GC-2 cell line was exposed to 50 Hz ELF-EMF (5 min on and 10 min off) at magnet...

Journal: :Oncology reports 2011
Alice Gerloff Angela Dittmer Ilka Oerlecke Hans-Jürgen Holzhausen Jürgen Dittmer

Several members of the Ets (E26 transformation specific) transcription factor family are involved in tumor progression, e.g. by activating matrix metalloproteases. Ets proteins share a unique DNA-binding domain, the Ets domain, which specifically recognizes GGAA/T-containing sequences common in many promoters. While the roles of quite a number of Ets proteins in carcinogenesis have been well es...

2015
Jennifer Jenkins Sonia Morán Panero

In the relatively few years since empirical research into English as a Lingua Franca began being conducted more widely, the field has developed and expanded remarkably, and in myriad ways. In particular, researchers have explored ELF from the perspective of a range of linguistic levels and in an ever-increasing number of sociolinguistic contexts, as well as its synergies with the field of Inter...

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