نتایج جستجو برای: emfs
تعداد نتایج: 437 فیلتر نتایج به سال:
Low-frequency (LF) electromagnetic fields (EMFs) are abundantly present in modern society, and the potential biological consequences of exposure to these fields are under intense debate. Immune cells are suggested as possible target cells, though a clear mechanism is lacking. Considering their crucial role in innate immune activation, we selected an ex vivo exposure set-up with human neutrophil...
In this paper we present an approach to the conversion of the power generated by a seawave power generator integrated in an offshore wind power farm. The article is focused on low power generators that could be used in offshore installations. The generator is a Permanent Magnet (PM) linear generator that generates highly distorted emfs. We propose and compare two possible ways to connect the ge...
Purpose The authors combine institutional theory with resource-based to explain how emerging market firms (EMFs) manage their technological knowledge capital by venturing into international markets. further explore the contingency effect of marketing and competitive intensity in home country influencing internationalization relationship. Design/methodology/approach study employs multiple linear...
Big data development encourages emerging market firms (EMFs) to diversify strategies and increase competitive advantages by acquiring resources embedded in different markets industries. This study draws on the composition-based view (CBV) empirically examines how EMFs integrate through international business diversification improve innovation performance open economies. Based collected from Chi...
All organisms are probably exposed to different types of electromagnetic fields (EMFs). This study is an attempt to evaluate the effect of extremely low-frequency EMFs (50 Hz) on some growth parameters and survival rate of common carp fingerling. The fry (n = 120, averaged 16.76 ± 0.88 g in initial weight) was exposed to ELF-EMF at four intensities of 0.1, 0.5, 1 and 2 mT only once for 2 h and ...
The critical arguments for radiofrequency radiation exposure limits are currently based on the principle that radio frequencies (RF) and electromagnetic fields (EMFs) non-ionising, their even 100-fold lower than those emitted from Sun in whole RF-EMF spectrum. Nonetheless, this argument has been challenged by numerous experimental theoretical studies diverse biological effects of at much power ...
Many higher animals have evolved the ability to use the Earth's magnetic field, particularly for orientation. Drosophila melanogaster also respond to electromagnetic fields (EMFs), although the reported effects are quite modest. Here we report that negative geotaxis in flies, scored as climbing, is disrupted by a static EMF, and this is mediated by cryptochrome (CRY), the blue-light circadian p...
This paper presents a new adaptive torque estimation algorithm for an interior permanent magnet synchronous motor (IPMSM) with parameter variations and cross-coupling between dand q-axis dynamics. All cross-coupled, time-varying, or uncertain terms that are not part of the nominal flux equations are included in two equivalent mutual inductances, which are described using the equivalent dand q-a...
Electromagnetic fields (EMFs) have been increasingly used as an alternative or adjunctive treatment option for musculoskeletal disorders (MSDs) like fractures, arthritis and osteoporosis. The electromagnetic based treatments can be divided into four main groups based on their physical characteristics and consequent biological effects: Direct current, capacitive coupling, inductive coupling (pul...
Electromagnetic fields (EMFs) include everything from cosmic rays through visible light to the electric and magnetic fields associated with electricity. While the high frequency fields have sufficient energy to cause cancer, the question of whether there are human health hazards associated with communication radiofrequency (RF) EMFs and those associated with use of electricity remains controver...
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