نتایج جستجو برای: 12 hz electromagnetic

تعداد نتایج: 688376  

2017
Anna KOZIOROWSKA Przemysław SOŁEK Lena MAJCHROWICZ Maria ROMEROWICZ-MISIELAK

The article presents the results of research on the influence of the sinusoidal electromagnetic field with a frequency of 50 Hz on the metabolic activity of two cell lines normal BJ and cancer 143b, with different exposure times (0.5 h, 1 h, 2 h and 3 h). It is shown the difference in its effect on cancer and physiological line. In order to analyze the viability there was performed the MTT test...

2016
Fumiya Kitayama Katsuhiro Hirata Noboru Niguchi Masashi Kobayashi

Nowadays, electromagnetic linear oscillatory actuators are used as vibration control devices because of their high controllability. However, there is a problem that thrust and vibration are small at a wide drive frequency range. In order to improve this problem, we propose a new linear oscillatory actuator that can easily change its own characteristics by using two sets of coils. Through finite...

2012
V. D. Rusov K. A. Lukin T. N. Zelentsova E. P. Linnik M. E. Beglaryan V. P. Smolyar M. Filippov B. Vachev

Within the frames of Alfvén sweep maser theory the description of morphological features of geomagnetic pulsations in the ionosphere with frequencies (0.1-10 Hz) in the vicinity of Schumann resonance (7.83 Hz) is obtained. It is shown that the related regular spectral shapes of geomagnetic pulsations in the ionosphere determined by ”viscosity” and ”elasticity” of magneto-plasma medium that cont...

2017
Jian Chen Hui Huang Jianquan He Zhang Xin

The study investigated the effects of pulsed electromagnetic fields (PEMFs) of different frequencies on the gene expression of receptor activator of nuclear factor kappa B (RANK) and Nuclear factor of activated T-cells cytoplasmic 1 (NFATc1) in rat osteoblast and osteoclast co-cultured model. Osteoblast-like cells were isolated from calvariae of Newborn Sprague Dawley rats (SD rats), while oste...

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...

2017
Yu-Mi Kim Sang-Eun Cho Soo-Chan Kim Hyun-Joon Jang Young-Kwon Seo

This study evaluated frequency-dependent effects of extremely low frequency electromagnetic fields (ELF-EMFs) on melanogenesis by melanocytes in vitro. Melanocytes were exposed to 2 mT EMFs at 30-75 Hz for 3 days before melanogenesis was examined. Exposure to ELF-EMFs at 50 and 60 Hz induced melanogenic maturation without cell damage, without changing cell proliferation and mitochondrial activi...

Sh Babri N Khalaji

The interaction of electromagnetic fields (EMF) with living organisms presents an increasing source of interest nowadays. There are reports on the influence of EMFs on memory. In this study, the effect of a 50 Hz, 50G EMF was investigated on passive avoidance learning in male rats. For this purpose, male Wistar rats (n = 50, 6-8 weeks, 250-300 g) were randomly divided into five groups. Control ...

Sh Babri N Khalaji

The interaction of electromagnetic fields (EMF) with living organisms presents an increasing source of interest nowadays. There are reports on the influence of EMFs on memory. In this study, the effect of a 50 Hz, 50G EMF was investigated on passive avoidance learning in male rats. For this purpose, male Wistar rats (n = 50, 6-8 weeks, 250-300 g) were randomly divided into five groups. Control ...

Elaheh Atashgar Farzad Rajaei Fatemeh Ghadimi Hasan Azhdari-Zarmehri Mohammad Sofiabadi

Background & Aims: Today, due to the modern industrial life of human beings, stress has become prevalent among them and they will suffer from its complications. Exposure to stress during pregnancy can change many babies' normal physiological processes. The separate and combined effects of three common types of prenatal stress were investigated on motor learning of male offspring of rats. Method...

Dariush Norouzian, Leila Farahmand, Maryam Moori, Parichehr Yaghmaei,

Introduction: Breast cancer is the most common metastatic malignancy and the second leading cause of death in women. Recently, extremely low-frequency electromagnetic fields (ELF-EMFs) seem to modulate the rate of proliferation and enhance apoptosis and are considered as an emerging approach to cancer therapy. Despite recent success in the electromagnetic fields, the results are still neither d...

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