نتایج جستجو برای: elf and internet

تعداد نتایج: 16853579  

اوج فرد, مریم, بهاالدینی, امین‌الله, جعفری, مرضیه, خوشنام, سید اسماعیل,

Background and Objective: Nitric Oxide in the small intestine causes relaxation of smooth muscles. Research indicates that extremely low frequency electromagnetic fields (ELF) affect nitric oxide level in the tissues. The objective of this study was to grasp the effect of prolonged exposure to ELF on the nitrergic system in the small intestine. Materials and Methods: 21 adult male rats were ...

Journal: :The Journal of antimicrobial chemotherapy 2009
Jared L Crandon Aryun Kim David P Nicolau

OBJECTIVES When evaluating the pharmacodynamics of antimicrobials, assumptions are often made relative to their pharmacokinetics. One example of this is applying tissue penetration results of uninfected hosts to those displaying a targeted illness. As tigecycline evolves into a potential treatment option for pneumonia, we determined whether the presence of a lung infection affected the penetrat...

2012
Kristin Wahl William Rosenberg Bernhard Vaske Michael P. Manns Klaus Schulze-Osthoff Matthias J. Bahr Heike Bantel

BACKGROUND AND AIMS Chronic liver diseases are characterized by inflammatory and fibrotic liver injuries that often result in liver cirrhosis with its associated complications such as portal hypertension and hepatocellular carcinoma. Liver biopsy still represents the reference standard for fibrosis staging, although transient elastography is increasingly used for non-invasive monitoring of fibr...

Journal: :Environmental Health Perspectives 2000
G Chen B L Upham W Sun C C Chang E J Rothwell K M Chen H Yamasaki J E Trosko

Whether exposure of humans to extremely low frequency electromagnetic fields (ELF-EMF) can cause cancer is controversial and therefore needs further research. We used a Friend erythroleukemia cell line that can be chemically induced to differentiate to determine whether ELF-EMF could alter proliferation and differentiation in these cells in a manner similar to that of a chemical tumor promoter....

Journal: :American journal of epidemiology 2003
Niclas Håkansson Per Gustavsson Antonio Sastre Birgitta Floderus

The authors evaluated the relation between occupational exposure to extremely low frequency (ELF) magnetic fields and mortality from cardiovascular diseases. The study was based on 27,790 subjects from the Swedish Twin Registry. Exposure to ELF magnetic fields was assessed by linking occupation reported in 1967 or 1973 to a job exposure matrix. Four levels of exposure were related to cause-spec...

Journal: :Journal of physiology and pharmacology : an official journal of the Polish Physiological Society 2011
Elzbieta Ciejka P Kleniewska B Skibska A Goraca

Extremely low frequency magnetic field (ELF-MF) may result in oxidative DNA damage and lipid peroxidation with an ultimate effect on a number of systemic disturbances and cell death. The aim of the study is to assess the effect of ELF-MF parameters most frequently used in magnetotherapy on reactive oxygen species generation (ROS) in brain tissue of experimental animals depending on the time of ...

2007
Andrea Bonarini Filippo Basso

The composition of simple behaviors is a common practice to obtain complex behaviors from autonomous agents. In this paper, we present S-ELF, a reinforcement learning approach that learns to coordinate pre-defined basic behaviors and is derived from ELF (Evolutonary Learning of Fuzzy rules) (Bonarini, 1993), (Bonarini, 1996a). S-ELF (Symbolic ELF) learns the context of activation for each of th...

2012
Youlian R. Tzenov Phillip G. Andrews Kim Voisey Paul Popadiuk Jieying Xiong Catherine Popadiuk Kenneth R. Kao

The human papillomavirus (HPV) is the etiologic agent of cervical cancer. In this study, we provide evidence for the human Pygopus (hPygo)2 gene as a cellular biomarker for HPV-related disease. In a tumor microarray of cervical cancer progression, hPygo2 levels were greater in high-grade lesions and squamous cell carcinomas than in normal epithelia. Similarly, hPygo2 mRNA and protein levels wer...

This study evaluates the impact of underwater ambient noise using seven real noise samples; Dolphin, Rain, Ferry, Sonar, Bubbles, Lightning, and Outboard Motor in three frequency ranges in extremely low frequency (ELF) band. The ELF band is the most significant bandwidth for underwater long-range communication. ELF band which is extended from 3 to 3000 Hz clearly, faces bandwidth limitation. Me...

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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