Relevant bibliographies by topics / EMF

Academic literature on the topic 'EMF'

Author: Grafiati
Published: 4 June 2021
Last updated: 8 June 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'EMF.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "EMF"

1

Riry, Prihatini, Abdullah Mohamad Puad, Abdullah Tuan Abdul Rashid bin Tuan, Said Ismail, Hussin Halil, and Saleh Norihan Mohamad. "Extremely low frequency electromagnetic field generator suitable for plant in vitro studies." Research in Agricultural Engineering 63, No. 4 (December 7, 2017): 180–86. http://dx.doi.org/10.17221/47/2016-rae.

Full text
Abstract:
The extremely low frequency electromagnetic field (ELF-EMF) occurs naturally from the earth and artificially as a human invention. The objectives of this study were to develop a suitable ELF-EMF generator for in vitro plants culture studies and to determine the effect of ELF-EMF exposure on in vitro tobacco (Nicotiana tabacum) growth and chlorophyll content. An ELF-EMF generator, the coGEM 1,000 was constructed using four coils of copper wires that were connected to a transformer, multimeter and rheostat. The coGEM 1,000 suitable for tissue culture plants is able to produce stable and uniform 6 and 12 mT 50Hz ELF-EMF in the four coils of the ELF-EMF generator. The tobacco in vitro plantlets were exposed to 6 and 12 mT of 50 Hz ELF-EMF for a period of 0.5, 1, 2 and 4 hours. The exposure to 12 mT ELF-EMF for an hour increased plant growth (shoot height); whereas the exposure to 6 mT Elf-EMF for an hour increased chlorophyll a, chlorophyll b and the total chlorophyll content.
APA, Harvard, Vancouver, ISO, and other styles
2

Srdjenovic, Branislava, Jasminka Mrdjanovic, Aleksandra Galovic, Nebojsa Kladar, Biljana Bozin, Vladimir Jurisic, and Gordana Bogdanovic. "Effect of ELF-EMF on antioxidant status and micronuclei in K562 cells and normal lymphocytes." Open Life Sciences 9, no. 10 (October 1, 2014): 931–40. http://dx.doi.org/10.2478/s11535-014-0335-9.

Full text
Abstract:
AbstractThe effect of ELF-EMF on DNA through changes in antioxidative enzyme activities has not been sufficiently explored yet. The aim of this study was to determine ELF-EMF effect on antioxidative enzymes in cancer cell line and genotoxic potential on normal human lymphocytes. K562 cells were exposed to 50 Hz ELF-EMF (40 μT, 100 μT; 3 h, 24 h) and spectrophotometric determination of lipid peroxidation and antioxidative enzyme activities was conducted. Genotoxicity of ELF-EMF (50 Hz, 100 μT) was investigated by cytokinesis-block micronucleus assay in a normal human lymphocytes (exposure 24 h and 48 h). Results demonstrated that ELF-EMF did not alter the process of lipid peroxidation and superoxide dismutase activity. Catalase activity was increased only after application of 100 μT EMF for 24 h. Glutathione-S-transferase and -reductase activities were increased. Treatment with 100 μT ELF-EMF (24 h, 48 h) significantly reduced micronuclei incidence, while cell proliferation was significantly increased. Results indicate that 50 Hz ELF-EMF (40 μT, 100 μT) are week stressors which alone cannot generate enough ROS to induce process of lipid peroxidation in cancer cell line but strong enough to induce response of antioxidative system. Furthermore, 100 μT ELF-EMF in human lymphocytes did not exhibit genotoxic potential during 24 h and 48 h treatment, but stimulated cell proliferation.
APA, Harvard, Vancouver, ISO, and other styles
3

Prihatini, Riry, and Norihan Mohamad Saleh. "SENSITIVITY OF PIGMENT CONTENT OF BANANA AND ORCHID TISSUE CULTURE EXPOSED TO EXTREMELY LOW FREQUENCY ELECTROMAGNETIC FIEL." Indonesian Journal of Agricultural Science 17, no. 1 (January 30, 2017): 37. http://dx.doi.org/10.21082/ijas.v17n1.2016.p37-34.

Full text
Abstract:
<p>Natural exposure of extremely low frequency electromagnetic field (ELF-EMF) occurs in the environment and acts as one of the abiotic factors that affect the growth and development of organisms. This study was conducted to determine the effect of ELF-EMF on the tissue cultured banana and slipper orchid chlorophyll content as one of the indicators in measuring plant photosynthetic capacity. Four days old banana (Musa sp. cv. Berangan) corm and seven days old slipper orchid (Paphiopedilum rothschildianum) cultures were exposed to 6 and 12 mT ELF-EMF generated by controllable ELF-EMF built up machine for 0.5, 1, 2 and 4 hours. After exposure, the banana and orchid cultures were incubated at 25° C for 8 and 16 weeks, respectively. The results showed that the ELF-EMF exposure had different effects on banana and slipper orchid cultures though both plant species belong to monocotyledon. The highest increase in chlorophyll content on banana was resulted by the high intensity and long duration of ELF-EMF exposure (12 mT for 4 hours), whereas on slipper orchid the modest and short duration of ELF-EMF exposure produced the most excessive chlorophyll content. Different ELF-EMF exposures (12 mT for 4 hours and 6 mT for 30 minutes) had potential to be applied on each plant to improve in vitro plant (banana and slipper orchid, respectively) growth. The increased chlorophyll and carotene/xanthophyll content on banana indicated that the banana was more tolerant to ELF-EMF exposure compared to slipper orchid. </p>
APA, Harvard, Vancouver, ISO, and other styles
4

Cichoń, Natalia, Piotr Czarny, Michał Bijak, Elżbieta Miller, Tomasz Śliwiński, Janusz Szemraj, and Joanna Saluk-Bijak. "Benign Effect of Extremely Low-Frequency Electromagnetic Field on Brain Plasticity Assessed by Nitric Oxide Metabolism during Poststroke Rehabilitation." Oxidative Medicine and Cellular Longevity 2017 (2017): 1–9. http://dx.doi.org/10.1155/2017/2181942.

Full text
Abstract:
Nitric oxide (NO) is one of the most important signal molecules, involved in both physiological and pathological processes. As a neurotransmitter in the central nervous system, NO regulates cerebral blood flow, neurogenesis, and synaptic plasticity. The aim of our study was to investigate the effect of the extremely low-frequency electromagnetic field (ELF-EMF) on generation and metabolism of NO, as a neurotransmitter, in the rehabilitation of poststroke patients. Forty-eight patients were divided into two groups: ELF-EMF and non-ELF-EMF. Both groups underwent the same 4-week rehabilitation program. Additionally, the ELF-EMF group was exposed to an extremely low-frequency electromagnetic field of 40 Hz, 7 mT, for 15 min/day. Levels of 3-nitrotyrosine, nitrate/nitrite, and TNFαin plasma samples were measured, and NOS2 expression was determined in whole blood samples. Functional status was evaluated before and after a series of treatments, using the Activity Daily Living, Geriatric Depression Scale, and Mini-Mental State Examination. We observed that application of ELF-EMF significantly increased 3-nitrotyrosine and nitrate/nitrite levels, while expression of NOS2 was insignificantly decreased in both groups. The results also show that ELF-EMF treatments improved functional and mental status. We conclude that ELF-EMF therapy is capable of promoting recovery in poststroke patients.
APA, Harvard, Vancouver, ISO, and other styles
5

Cichon, Natalia, Ewelina Synowiec, Elzbieta Miller, Tomasz Sliwinski, Michal Ceremuga, Joanna Saluk-Bijak, and Michal Bijak. "Effect of Rehabilitation with Extremely Low Frequency Electromagnetic Field on Molecular Mechanism of Apoptosis in Post-Stroke Patients." Brain Sciences 10, no. 5 (April 30, 2020): 266. http://dx.doi.org/10.3390/brainsci10050266.

Full text
Abstract:
Apoptosis in acute stroke is associated with a negative prognosis and is correlated with the severity of the neurological deficit. However, there is no evidence that indicates that, in the subacute phase of the stroke, the apoptosis process might activate neuroplasticity. Therefore, in this study, we investigated the effect of an extremely low frequency electromagnetic field (ELF-EMF) on the molecular mechanism of apoptosis, as used in the rehabilitation of post-stroke patients. Patients with moderate stroke severity (n = 48), 3–4 weeks after incident, were enrolled in the analysis and divided into ELF-EMF and non-ELF-EMF group. The rehabilitation program in both groups involves the following: kinesiotherapy—30 min; psychological therapy—15 min; and neurophysiological routines—60 min. Additionally, the ELF-EMF group was exposed to an ELF-EMF (40 Hz, 5 mT). In order to assess the apoptosis gene expression level, we measured the mRNA expression of BAX, BCL-2, CASP8, TNFα, and TP53. We found that ELF-EMF significantly increased the expression of BAX, CASP8, TNFα, and TP53, whereas the BCL-2 mRNA expression after ELF-EMF exposition remained at a comparable level in both groups. Thus, we suggest that increasing the expression of pro-apoptotic genes in post-stroke patients promotes the activation of signaling pathways involved in brain plasticity processes. However, further research is needed to clarify this process.
APA, Harvard, Vancouver, ISO, and other styles
6

Nishimura, Tsutomu, Harue Tada, and Masanori Fukushima. "Correlation between the Lunar Phase and Tail-Lifting Behavior of Lizards (Pogona vitticeps) Exposed to an Extremely Low-Frequency Electromagnetic Field." Animals 9, no. 5 (April 30, 2019): 208. http://dx.doi.org/10.3390/ani9050208.

Full text
Abstract:
We previously showed that the agamid lizard Pogona vitticeps responded to an extremely low-frequency electromagnetic field (ELF-EMF; frequency: 6 and 8 Hz; peak magnetic field: 2.6 µT; peak electric field: 10 V/m) with tail-lifting behavior. In addition, the tail-lifting response to ELF-EMF disappeared when the parietal eyes of the lizards were covered by small round aluminum caps. This result suggests that the parietal eye contributes to light-dependent magnetoreception. In the present study, we set up an ELF-EMF group to evaluate the long-term effect of the ELF-EMF on lizards’ behavior and examine our hypothesis that exposure to ELF-EMFs increases the magnetic field sensitivity in lizards. We therefore include the lunar phase (full moon/new moon) and K index as environmental factors related to the geomagnetic field in the analysis. The number of tail lifts per individual per day was the response variable while calendar month, daily mean temperature, daily mean humidity, daily mean atmospheric pressure, full moon, new moon, and K index were the explanatory variables. We analyzed an ELF-EMF group and a control group separately. In a multiple linear regression analysis, the independent determinants associated with the number of tail lifts were the full moon, the temperature, February, March, April, and May in the ELF-EMF group and March, April, May, and June in the control group. The P. vitticeps in the ELF-EMF group responded to the full moon whereas those in the control group did not. In addition, in the ELF-EMF group, the number of tail lifts was higher on days when the K index was higher (P = 0.07) in the first period whereas there was no such tendency in either period in the control group. There is the possibility that the exposure to ELF-EMFs may increase magnetic-field sensitivity in lizards.
APA, Harvard, Vancouver, ISO, and other styles
7

Kim, Se Hun, Yei Heum Park, Hyunseong Lee, Sang Eun Lee, Jae Hong Park, Ki Hwa Lee, and Yong Han Kim. "The intensity of extremely low frequency electromagnetic field by target temperature of MEGAWARMERⓇ patient temperature management system." Anaesthesia, Pain & Intensive Care 25, no. 6 (December 22, 2021): 741–45. http://dx.doi.org/10.35975/apic.v25i6.1693.

Full text
Abstract:
Background: Extremely low frequency electromagnetic field (ELF-EMF) emitted by electronic devices is associated with various biological effects on the human body. MEGAWARMERⓇ patient temperature management system (PTMS) is widely used for the patient temperature management in anesthesia and critical care. We investigated the intensity of ELF-EMF according to the distance and target temperature of MEGAWARMERⓇ PTMS to find the distance allowing minimized exposure to ELF-EMF. Methodology: This study was a prospective experimental study. Target temperature was set at 31℃, 36℃ and 41℃. After setting each target temperature, the intensity of ELF-EMF was measured 300 times during 10 min at interval of 2 sec, at distances of 15, 30, and 45 cm from the MEGAWARMERⓇ PTMS, respectively. Nine measurement groups from 3 different target temperatures and 3 different distances resulted in 2700 data. Including background EMF intensity with the MEGAWARMERⓇ PTMS also turned off, total 3000 data in 10 groups were collected. Results: At the distance of 15 cm from the MEGAWARMERⓇ PTMS, mean values of ELF-EMF were 4.6721 milligauss (mG), where 1 G is equivalent to 10⁻⁴ Tesla (T) (or 1 mG = 0.1 μT) at 31℃, 4.2852 mG at 36℃, and 3.9935 mG at 41℃. At the distance of 30 cm, mean values of ELF-EMF were 2.0948 mG at 31℃, 2.0790 mG at 36℃, and 2.0633 mG at 41℃. At the distances of 15 cm and 30 cm, the lower target temperature showed statistically significantly higher mean values of ELF-EMF (p < 0.05). In all three target temperatures, longer distance made statistically significantly lower mean value of ELF-EMF (p < 0.05). Conclusions: The mean intensity of ELF-EMF from the MEGAWARMERⓇ Patient Temperature Management at the distance of 15 cm and 30 cm exceeded 2 mG recommended by Swedish Confederation of Professional Employees guideline. Key words: Extremely low frequency electromagnetic field; Temperature management; Intensive care unit Abbreviations: ELF-EMF– Extremely Low Frequency ElectroMagnetic Field; PRMS – Patient Temperature Management System; mG – milligauss Citation: Kim SH, Park YH, Lee H, Lee SE, Park JH, Lee KH, Kim YH. The intensity of extremely low frequency electromagnetic field by target temperature of MEGAWARMERⓇ patient temperature management system. Anaesth. pain intensive care 2021;25(6):741-745; DOI: 10.35975/apic.v25i6.1693 Received: August 11, 2021, Reviewed: September 30, 2021, Accepted: October 6, 2021
APA, Harvard, Vancouver, ISO, and other styles
8

Choi, Ju-Hye, Yu-Mi Kim, Hee-Jung Park, Myeong-Hyun Nam, and Young-Kwon Seo. "Extremely Low-Frequency Electromagnetic Fields Increase Cytokines in Human Hair Follicles through Wnt/β-Catenin Signaling." Biomedicines 10, no. 4 (April 18, 2022): 924. http://dx.doi.org/10.3390/biomedicines10040924.

Full text
Abstract:
Hair loss is a chronic disorder that affects many people; however, a complete treatment has not yet been developed. Therefore, new therapeutic agents for preventing hair loss must be developed, and electromagnetic field (EMF) therapy has been proven to be a promising medical treatment in various fields, including hair loss treatment. This study evaluated the effect of extremely low-frequency electromagnetic field (ELF-EMF) intensity and exposure time by analyzing the expression of cytokines and anagen-related molecules, which influence hair activation and growth, in hair bulb spheroid (HBS) and hair follicle (HF) organ cultures. ELF-EMFs did not induce toxicity in the HBSs, as verified via the lactate dehydrogenase (LDH) assay. Moreover, an ELF-EMF intensity of 5–20 G promoted the expression of ALP, versican, β-catenin, and several cytokines (VEGF, PDGF, FGF-10, and ET-1) in HBSs. Immunohistochemical staining showed that ELF-EMF at an intensity of 5–20 G upregulated ALP and β-catenin and decreased TUNEL staining in HBS. Moreover, HFs exposed to ELF-EMF for 60 min exhibited an increase in hair length and a 1.5-fold increase in IL-4, ICAM-1, ALP, and versican mRNA expression compared to the control. Immunohistochemical staining indicated that 60 min of ELF-EMF can increase the expression of ALP and β-catenin and decreases TUNEL staining in organ cultures. Collectively, our results demonstrated that ELF-EMF exposure at a 10 G intensity for 60 min promoted hair shaft growth in HFs due to the effect of cytokines and adhesion molecules via the Wnt/β-catenin pathway. Therefore, ELF-EMF is a promising treatment for hair loss.
APA, Harvard, Vancouver, ISO, and other styles
9

Quaglino, Daniela, Miriam Capri, Luigi Zecca, Claudio Franceschi, and Ivonne P. Ronchetti. "The Effect on Rat Thymocytes of the Simultaneous In Vivo Exposure to 50-Hz Electric and Magnetic Field and to Continuous Light." Scientific World JOURNAL 4 (2004): 91–99. http://dx.doi.org/10.1100/tsw.2004.183.

Full text
Abstract:
Thymus plays an important role in the immune system and can be modulated by numerous environmental factors, including electromagnetic fields (EMF). The present study has been undertaken with the aim to investigate the role of long-term exposure to extremely low frequency electric and magnetic fields (ELF-EMF) on thymocytes of rats housed in a regular dark/light cycle or under continuous light. Male Sprague-Dawley rats, 2 months old, were exposed or sham exposed for 8 months to 50-Hz sinusoidal EMF at two levels of field strength (1 kV/m, 5 μT and 5 kV/m, 100 μT, respectively). Thymus from adult animals exhibits signs of gradual atrophy mainly due to collagen deposition and fat substitution. This physiological involution may be accelerated by continuous light exposure that induces a massive death of thymocytes. The concurrent exposure to continuous light and to ELF-EMF did not change significantly the rate of mitoses compared to sham-exposed rats, whereas the amount of cell death was significantly increased, also in comparison with animals exposed to EMF in a 12-h dark-light cycle. In conclusion, long-term exposure to ELF-EMF, in animals housed under continuous light, may reinforce the alterations due to a photic stress, suggesting that,in vivo, stress and ELF-EMF exposure can act in synergy determining a more rapid involution of the thymus and might be responsible for an increased susceptibility to the potentially hazardous effects of ELF-EMF.
APA, Harvard, Vancouver, ISO, and other styles
10

Liu, Yong, Wen-bin Liu, Kai-jun Liu, Lin Ao, Julia Li Zhong, Jia Cao, and Jin-yi Liu. "Effect of 50 Hz Extremely Low-Frequency Electromagnetic Fields on the DNA Methylation and DNA Methyltransferases in Mouse Spermatocyte-Derived Cell Line GC-2." BioMed Research International 2015 (2015): 1–10. http://dx.doi.org/10.1155/2015/237183.

Full text
Abstract:
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-EMFin vitro. Mouse spermatocyte-derived GC-2 cell line was exposed to 50 Hz ELF-EMF (5 min on and 10 min off) at magnetic field intensity of 1 mT, 2 mT, and 3 mT with an intermittent exposure for 72 h. We found that 50 Hz ELF-EMF exposure decreased genome-wide methylation at 1 mT, but global methylation was higher at 3 mT compared with the controls. The expression of DNMT1 and DNMT3b was decreased at 1 mT, and 50 Hz ELF-EMF can increase the expression of DNMT1 and DNMT3b of GC-2 cells at 3 mT. However, 50 Hz ELF-EMF had little influence on the expression of DNMT3a. Then, we established DNA methylation and gene expression profiling and validated some genes with aberrant DNA methylation and expression at different intensity of 50 Hz ELF-EMF. These results suggest that the alterations of genome-wide methylation and DNMTs expression may play an important role in the biological effects of 50 Hz ELF-EMF exposure.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "EMF"

1

Gatla, Goutham. "Validation of ModelicaML models." Thesis, Linköpings universitet, Programvara och system, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-86364.

Full text
Abstract:
In the world of modeling, Model Validation plays a crucial role. A model editor is not said to becomplete without Validation. ModelicaML is a Modeling Language extended from a subset of UMLand SysML, developed under OpenModelica Project. It is defined to provide time-discrete andtime-continuous models. Papyrus Model Editor is extended to support for ModelicaML usingModelicaML Eclipse plug-in. This plug-in comes with Modelica Code Generator.Previously, ModelicaML plug-in had a prototype of validation which provided only Batch-modevalidation. The validation is used to be done by the Modelica compiler after the code generation phase.Each time the user tried to validate the model; first Modelica code is generated and then validated. Thistype of validation misses certain validation rules to validate due to the conversion from theModelicaML model to Modelica code.The goal of this thesis is to implement Model Validation done at model editor level with both Batch andLive mode validation. This can be done by developing an Eclipse plug-in which does the ModelValidation. This plug-in uses the EMF Validation framework for implementing the constraints andvalidation on ModelicaML models.
APA, Harvard, Vancouver, ISO, and other styles
2

Schuderer, Jürgen Rudolf. "EMF risk assessment: "in vitro" research and sleep studies /." Zürich, 2004. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=15347.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Ohnuma, Takumi, Shinji Doki, and Shigeru Okuma. "Maximum torque control with inductance setting of extended EMF observer." IEEE, 2009. http://hdl.handle.net/2237/13950.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Abdul, Malek Norun F. "3-D antenna array analysis using the induced EMF method." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13385.

Full text
Abstract:
The effect of mutual coupling between elements plays a crucial role to the performance of the antenna arrays. The radiation patterns of antenna arrays will be altered by the coupling effect from the adjacent elements thus reducing the accuracy and resolution in direction finding application. This research developed and validated the novel 3-D Algorithm to calculate the far-field pattern of dipole arrays arranged in three dimensions and in any configuration (both in straight and slanted position). The effect of mutual coupling has been accounted using the Induced EMF method. The computation is performed on 2x2 parallel dipoles and 12 dipoles arranged at the edge of a cube. The results are validated with other electromagnetic techniques such as Method of Moment (MoM) and Finite Difference Time-Domain (FDTD). Then, a 2x2 dipole array is chosen for beam steering and experiment validation due to its ease of implementation and feeding network. The array optimisation to control the pattern is performed using a genetic algorithm. The far-field pattern computed using the 3-D algorithm might be less accurate than other 3-D electromagnetic techniques but its array optimisation is faster and efficient. The simulation and measurement results are in good agreement with each other confirmed the validity of the 3-D algorithm.
APA, Harvard, Vancouver, ISO, and other styles
5

Donovan, Alan. "On-line tool wear identification by tribo emf signal analysis." Thesis, Queensland University of Technology, 1993. https://eprints.qut.edu.au/107080/1/T%28BE%26E%29%20545%20On-line%20tool%20wear%20indentification%20by%20tribo%20emf%20signal%20analysis.pdf.

Full text
Abstract:
The acoustic air-borne signal, the cutting tool vibration, and the stochastic component of the tribo emf signal produced by single point continuous turning operations have been analysed using statistical techniques. The correlation between variation in their statistical function values and the degree of cutting tool flank wear has been considered to determine to what extent they may be applied to "in-process" tool wear identification. The test program used a range of cutting parameters typical for the cutting of mild steel and high tensile cast iron using high speed steel and carbide cutting tools. The acoustic sound and the tool vibration have been shown to have limited potential as a means of accurate tool wear identification. The tribo emf signal showed a greater dependence on the tool condition, and accurate assessment was carried out using high tensile cast iron workpieces. The statistical variations of the tribo emf signal obtained for cutting mild steel were highlighted using pseudo random binary sequence slotted test workpieces. The method was developed, using a comparable sequence defined as a quasi random binary sequence, to investigate the response characteristics of the tribo emf by means of correlation analysis, and also to highlight the dynamic response of the lathe through spectral analysis of vibration measured at the toolpost. A mathematical model of the contact conditions at the tool workpiece interface was proposed and tested; showing good correlation with monitored spectral variation of the tribo emf for the cutting of cast iron. Finally, conclusions have been made concerning the potential of the various stochastic signals for the purpose of in-process tool wear identification.
APA, Harvard, Vancouver, ISO, and other styles
6

Sereni, Elettra. "Study on cellular and molecular mechanisms underline the biological effects of extremely low frequency electromagnetic fields (ELF EMFs)." Doctoral thesis, Università di Siena, 2018. http://hdl.handle.net/11365/1046221.

Full text
Abstract:
In the last decades, electromagnetic therapy generated an intense interest due to its use for the treatment of some pathological states related to musculoskeletal system. In particular, electromagnetic fields (EMFs) provide a therapeutic tool used to improve tissue regeneration in bone non-union fractures, to facilitate skin wound healing and to reduce pain symptomatology. This therapy represents a valid and non-invasive approach widely used to treat the area of interest avoiding side effects and the FDA approved its use to treat bone disorders. This therapy uses the electromagnetic radiations in the frequency range between 3 Hz and 300 Hz. These are non-ionizing and low energy radiations capable to induce heterogeneous effects on a very large number of biological processes such as cell cycle distribution and proliferation, apoptosis and cell migration. All of these effects vary in relation to frequency, amplitude, length of exposure and are also related to the intrinsic susceptibility of different cell lines. This aspect makes molecular investigations complicated because the cellular response is strictly related to the electromagnetic treatment used to irradiate samples. Since the mechanism of action by which this physical stimulus acts on cells is still lacking, our efforts have been addressed to define a coherent biochemical and molecular picture, considering the activities of the key enzymes of the most important metabolic pathways. Decreasing level in PKasic activity was found in cells exposed to ELF EMFs and this effect was associated with the inhibition of the isoform M2 of PK which is expressed in our cellular model. In literature, it has been described that this isoform is inhibited by a redox mechanism which cause the oxidation of the Cys358 residue, promoting a metabolic shift toward an anabolic state. Our biochemical results indicate that ELF EMFs treatments seem to elicit a similar response in NIH3T3 cells. Moreover cell migration and proliferation, the two biological processes involved in wound healing process, has been studied using in vitro scratch assay in order to modeling the dynamic of the wound closure.
APA, Harvard, Vancouver, ISO, and other styles
7

Jermain, Robert F. "Effects of EMF Emissions from Undersea Electric Cables on Coral Reef Fishes." NSUWorks, 2016. http://nsuworks.nova.edu/occ_stuetd/418.

Full text
Abstract:
The objective of this project was to determine if the electromagnetic field (EMF) emissions from undersea power cables impacted the local and transient marine life, with an emphasis on reef fishes. The work was done at South Florida Ocean Measurement Facility of Naval Surface Warfare Center, Carderock Division, Broward County, Florida. This facility functions as the hub for a range of active undersea detection and data transmission cables. It has multiple active submarine power cables that extend several miles offshore and which can deliver power and enable data transmission to and from a range of acoustic and EMF sensors. The cables lie directly on the seabed, are buried in the sand, or are suspended in the water column. EMF emissions from a selected cable were created during SCUBA fish surveys. During the surveys the transmission of either alternating current (AC) or Direct Current (DC) was randomly intiated by the facility with no transmitted current (OFF) provided a control. The surveys were conducted using standardized transect and stationary point count methods to acquire reef fish abundances prior to and immediately after a change in transmission frequency (the divers were aware of the time of frequency change but not the specific frequencies). The divers were also tasked to note the reaction of the reef fishes to the immediate change in the EMFs emitting from the cable during a power switch. The surveys were conducted on a quarterly basis at three sampling sites offshore on the same cable. These sites were in water depths of approximately 5, 10, and 15 m, respectively and were selected based on their robust reef fish community and are representative of each of the three primary hardbottom coral reef habitats in the local offshore environment: the Inner (Shallow), Middle, and Outer (Deep) reef tracts. A total of 263 surveys were conducted: 132 transect-counts and 131 point-counts over 15 months. There were 24,473 fishes counted during transect-count surveys and with point-counts, 36,115 fishes were counted. With count types and sites combine a total of 151 species representing 35 families were recorded. An analysis of the data primarily did not find statistical differences among power states and any variables. However, this may be a Type II error as there are strong indications of a potential difference of a higher abundance of reef fishes at the sites when the power was off. There are a number of caveats to consider with this finding: the data set needs to be larger in terms of numbers of: counts, sites and eletro-sensitive species to allow for rigorous statistical analysis; also a longer time between frequency changes to allow for slower, but nonetheless important, reactions to differing EMFs might lead to differing conclusions. Obviously, more research is required to confirm the results of this study.
APA, Harvard, Vancouver, ISO, and other styles
8

Stiller, Emilie [Verfasser]. "Vergleichende Untersuchung zur Bruchfestigkeit von voll- und teilgepressten EMF-Kronen / Emilie Stiller." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2013. http://d-nb.info/1031097260/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Shao, Jianwen. "Direct Back EMF Detection Method for Sensorless Brushless DC (BLDC) Motor Drives." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/35065.

Full text
Abstract:
Brushlesss dc (BLDC) motors and their drives are penetrating the market of home appliances, HVAC industry, and automotive applications in recent years because of their high efficiency, silent operation, compact form, reliability, and low maintenance. Traditionally, BLDC motors are commutated in six-step pattern with commutation controlled by position sensors. To reduce cost and complexity of the drive system, sensorless drive is preferred. The existing sensorless control scheme with the conventional back EMF sensing based on motor neutral voltage for BLDC has certain drawbacks, which limit its applications. In this thesis, a novel back EMF sensing scheme, direct back EMF detection, for sensorless BLDC drives is presented. For this scheme, the motor neutral voltage is not needed to measure the back EMFs. The true back EMF of the floating motor winding can be detected during off time of PWM because the terminal voltage of the motor is directly proportional to the phase back EMF during this interval. Also, the back EMF voltage is referenced to ground without any common mode noise. Therefore, this back EMF sensing method is immune to switching noise and common mode voltage. As a result, there are no attenuation and filtering necessary for the back EMFs sensing. This unique back EMF sensing method has superior performance to existing methods which rely on neutral voltage information, providing much wider motor speed range at low cost. Based on the fundamental concept of the direct Back EMF detection, improved circuitry for low speed /low voltage and high voltage applications are also proposed in the thesis, which will further expand the applications of the sensorless BLDC motor drives. Starting the motor is critical and sometime difficult for a BLDC sensorless system. A practical start-up tuning procedure for the sensorless system with the help of a dc tachometer is described in the thesis. This procedure has the maximum acceleration performance during the start-up and can be used for all different type applications. An advanced mixed-signal microcontroller is developed so that the EMF sensing scheme is embedded in this low cost 8-bit microcontroller. This device is truly SOC (system-on-chip) product, with high-throughput Micro core, precision-analog circuit, in-system programmable memory and motor control peripherals integrated on a single die. A microcontroller-based sensorless BLDC drive system has been developed as well, which is suitable for various applications, including hard disk drive, fans, pumps, blowers, and home appliances, etc.
Master of Science
APA, Harvard, Vancouver, ISO, and other styles
10

Ozturk, Salih Baris. "Direct torque control of permanent magnet synchronous motors with non-sinusoidal back-EMF." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2728.

Full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "EMF"

1

Controlling software for EMF laboratory studies. Konstanz: Hartung-Gorre, 2006.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Lee, Rubin David, and Stroup Alice, eds. EMF: Studies in early modern France. Charlottesville, VA: Rookwood Press, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Lee, Rubin David, ed. EMF: Studies in early modern France. Charlottesville, Va: Rookwood Press, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Rea, William J. EMF Effects from Power Sources and Electrosmog. Boca Raton, Florida : CRC Press, [2019] | Series: Electromagnetic frequency Sensitivity series: CRC Press, 2018. http://dx.doi.org/10.1201/9780429020520.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

National Institute For Occupational Safety and Health., National Institute of Environmental Health Sciences., and United States. Dept. of Energy., eds. Questions and answers: EMF in the workplace. [Washingon, D.C.]: EMF RAPID Program, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Energy Facility Siting Council (Or.), ed. EMF: Effects on health are still unknown. Salem, Or: Oregon Energy Facility Siting Council, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Jeffers, David. EMF briefing: Electric and magnetic fields : the facts. London: Electricity Association Services Limited, 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Nikoloski, Neviana. EMF risk assessment: Exposure assessment and specialized exposure setups. Konstanz: Hartung-Gorre Verlag, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

EMF risk assessment: "in vitro" research and sleep studies. Konstanz: Hartung-Gorre, 2005.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Prata, Stephen. EMF handbook: Understanding and controlling electromagnetic fields in your life. Corte Madera, CA: Waite Group Press, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "EMF"

1

Watkins, William H. "Back EMF." In Loudspeaker Physics and Forced Vibration, 37–43. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-91634-3_6.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Trzaska, Hubert. "Dipole Antenna for ELF EMF Measurements." In Biological Effects and Dosimetry of Static and ELF Electromagnetic Fields, 211–19. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2099-9_13.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Bettini, Lorenzo. "Rapidly Implementing EMF Applications with EMF Components." In Communications in Computer and Information Science, 52–65. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-45404-2_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Djuric, Nikola, Nikola Kavecan, Nenad Radosavljevic, and Snezana Djuric. "Service-Based EMF Monitoring in EMF RATEL System." In Lecture Notes in Computer Science, 426–38. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-65729-1_38.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Repacholi, M. H. "International EMF Project." In Radio Frequency Radiation Dosimetry and Its Relationship to the Biological Effects of Electromagnetic Fields, 21–28. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4191-8_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

"Neurodegenerative Diseases and ELF-EMF." In Epidemiology of Electromagnetic Fields, 198–215. CRC Press, 2014. http://dx.doi.org/10.1201/b16968-15.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

"Emf Studies." In Power Engineering (Willis). CRC Press, 2002. http://dx.doi.org/10.1201/9780203910832.ch14.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Moghavvemi, Mahmoud, Farhang Alijani, Hossein Ameri, and Maryam Ashayer. "Exposing to EMF." In Behaviour of Electromagnetic Waves in Different Media and Structures. InTech, 2011. http://dx.doi.org/10.5772/22149.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

"EMF Measurement Methods." In Electromagnetic Measurements in the Near Field, 27–49. Institution of Engineering and Technology, 2012. http://dx.doi.org/10.1049/sbew042e_ch3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

"Photonic EMF Measurements." In Electromagnetic Measurements in the Near Field, 183–206. Institution of Engineering and Technology, 2012. http://dx.doi.org/10.1049/sbew042e_ch9.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "EMF"

1

Yang, K. S. "Building cabling system performance - harmonics & EMF/EMI/EMC." In First IEE International Conference on Building Electrical Technology (BETNET). IEE, 2004. http://dx.doi.org/10.1049/cp:20040795.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Baheti, Ashutosh, Girish Kumar, and Miloni Mehta. "Hand held measuring equipment for ELF-EMF." In 2011 IEEE International Symposium on Medical Measurements and Applications (MeMeA). IEEE, 2011. http://dx.doi.org/10.1109/memea.2011.5966682.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Ed-douibi, Hamza, Javier Luis Cánovas Izquierdo, Abel Gómez, Massimo Tisi, and Jordi Cabot. "EMF-REST." In SAC 2016: Symposium on Applied Computing. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2851613.2851782.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Bettini, Lorenzo. "The EMF Parsley DSL for Developing EMF Applications." In 4th International Conference on Model-Driven Engineering and Software Development. SCITEPRESS - Science and and Technology Publications, 2016. http://dx.doi.org/10.5220/0005743803010308.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Garzón, Jorge, José Carlos Hidalgo, Federico Jorreto, Patricia Cara, and Joaquín Ramos. "EMFRail: A Tool to Calculate Rail Traction Electromagnetic Fields." In 2017 Joint Rail Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/jrc2017-2201.

Full text
Abstract:
EMC/EMI is a source of concern from the beginning of planning a new railway line. High powered electrified railways such as HSR are usually AC electrified. This poses a hazard for nearby systems and users. Induced voltages can create electric shock risks or malfunction in signalling or other nearby systems. LRTs, metro lines or commuter systems are usually DC fed and can be located near electromagnetic sensitive equipment such as MRI equipment in hospitals or research equipment — such as electron microscopes — in campuses or laboratories. EMF calculation and impact assessment in early phases of the project rely on simulation and expertise in these complex multi system interrelations. Rail traction creates EM fields which tend to decrease rapidly as the distance from the track axis increases. However, considerations about passengers, workforce and public safety and system compatibility are always needed. As an example, transient currents in DC rail, especially due to short circuits or arcs can interfere with nearby equipment. Even semi steady state DC currents associated with normal operation of the line (traction and breaking currents) present EMC related hazards that need to be assessed in order to evaluate if mitigation measures for associated risks are needed. AECOM’s Madrid Transportation Design Center has developed a tool that provides 3D EMF calculations for railway lines, either AC or DC. This tool, called EMFRail, can deliver EMF estimations based on power load supply simulations considering alignment, separation between tracks, geometry of the electrification system (OCS, third rail), rolling stock mechanical and electric features as well as regenerative braking in order to provide decision support information to make educated project decisions from the beginning of the design. Regenerative braking is a common energy saving tool for railways these days, but has posed new EMF hazards since currents sent back to the OCS can be bigger than those related to traction and this process can occur in different locations of the line (usually when the train is decelerating from maximum speed). This tool can calculate both magnetic and electrical fields for traction frequencies. This tool has been used in several LRT and rail projects providing insightful information to adopt mitigation measures such as underground feeders or operational limitations. EMFRail can simulate mitigation measures for challenging situations such as EMF caused by semi steady state maximum currents (prior to the trip of protection systems). EMFRail can also provide EMF calculations for transmission or distribution power lines once the required current or voltage values (module and phase) are known as well as the position of the different conductors (OCS wires, feeders, rails) of the line under study. EMFRail is developed using MatLab programming suite taking advantage of matrix operation capabilities. Output results are isocurves that can be superimposed to a raised view drawing, 3D contours for specific magnetic field values or even time animated frames to understand worst case scenarios that sometimes are not easy to foresee based on common assumptions.
APA, Harvard, Vancouver, ISO, and other styles
6

Mohamed, Maddeh, Mohamed Romdhani, and Khaled Ghedira. "MOF-EMF Alignment." In Third International Conference on Autonomic and Autonomous Systems (ICAS'07). IEEE, 2007. http://dx.doi.org/10.1109/conielecomp.2007.85.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Gerber, Anna, and Kerry Raymond. "MOF to EMF." In the 2003 OOPSLA workshop. New York, New York, USA: ACM Press, 2003. http://dx.doi.org/10.1145/965660.965673.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

"EMF on Rails." In 7th International Conference on Software Paradigm Trends. SciTePress - Science and and Technology Publications, 2012. http://dx.doi.org/10.5220/0004123202730278.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Marshman, C., and M. Tyndall. "EMC and EMF regulatory issues for the power industry." In 20th International Conference and Exhibition on Electricity Distribution (CIRED 2009). IET, 2009. http://dx.doi.org/10.1049/cp.2009.1149.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Sheikh, Abdul Q., Andrei Kogan, and Daria A. Narmoneva. "Electromagnetic Field Mediates Capillary-Like Network Formation via MAPK/ERK Signaling Cascade." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206710.

Full text
Abstract:
Abnormal angiogenesis (formation of capillaries) plays an important role in the impaired diabetic wound healing and has emerged as a new target area for therapeutic interventions. Pulsed magnetic field therapy, which was initially used for healing of bone fractures, has been recently introduced as a potential therapy to treat diabetic and chronic wounds [1], although the mechanisms responsible for improved healing are still unclear. Electromagnetic fields (EMF) have been shown to act as a directional cues in cellular responses such as migration and activations of several signal transduction cascades [2]. Recent literature delineates an important role of GHz EMF (i.e., with an oscillation period of a fraction of a nanosecond) in inducing rapid and sustained phosphorylation of mitrogen-activated kinase and extracellular-signal-regulated kinase (MAPK/ERK) [3]. Recent studies have also implicated MAP kinase in mediating the phosphorylation of Connexin-43 (Cx43) that accompanies regulation of cell-cell communication via connexin gap junctions [4]. Importantly, both MAPK/ERK pathway and Cx43 signaling are involved in the process of angiogenesis [5,6]. Therefore, the goal of this study was to test the hypothesis that high-frequency (7.5GHz) EMFs promote angiogenesis in vitro via MAPK/ERK and/or Cx43 signaling. We used a custom-built EMF exposure setup and a self-assembling peptide nanoscaffold as a controlled angiogenic microenvironment [7] to quantify the effect of EMF on capillary formation and underlying cellular responses.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "EMF"

1

Spahn, Gabriel, Noah Kurinsky, and Dan Bauer. Vibration and EMF Backgrounds at NEXUS. Office of Scientific and Technical Information (OSTI), July 2019. http://dx.doi.org/10.2172/1606556.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Stormshak, F., and J. Thompson. Joint HVAC transmission EMF environmental study. Office of Scientific and Technical Information (OSTI), May 1992. http://dx.doi.org/10.2172/7278523.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Woloschak, G. E., T. Paunesku, C. M. Chang-Liu, L. Loberg, J. Gauger, and D. McCormick. Changes in gene expression following EMF exposure. Office of Scientific and Technical Information (OSTI), October 1997. http://dx.doi.org/10.2172/563249.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Enertech Consultants. Environmental Field Surveys, EMF Rapid Program, Engineering Project No.3. Office of Scientific and Technical Information (OSTI), April 1996. http://dx.doi.org/10.2172/2428.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Dhanak, Manhar, Richard Spieler, Kirk Kilfoyle, Robert F. Jermain, John Frankenfield, Shirley Ravenna, Christopher Dibiasio, Robert Coulson, Ed Henderson, and William Venezia. Effects of EMF Emissions from Cables and Junction Boxes on Marine Species. Office of Scientific and Technical Information (OSTI), September 2016. http://dx.doi.org/10.2172/1357262.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Bracken, T. D., R. F. Rankin, and J. A. Wiley. Electric and Magnetic Fields (EMF) RAPID Engineering Program, Project 7: Development of Field Exposure Models. Office of Scientific and Technical Information (OSTI), May 1999. http://dx.doi.org/10.2172/10444.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Hsu, J. S. Report on Toyota/Prius Motor Torque-Capability, Torque-Property, No-Load Back EMF, and Mechanical Losses. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/885669.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Hsu, J. S., C. W. Ayers, C. L. Coomer, R. H. Wiles, T. A. Burress, S. L. Campbell, K. T. Lowe, and R. T. Michelhaugh. Report on Toyota/Prius Motor Torque Capability, Torque Property, No-Load Back EMF, and Mechanical Losses, Revised May 2007. Office of Scientific and Technical Information (OSTI), May 2007. http://dx.doi.org/10.2172/921782.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Wells, Beric, Lenna Mahoney, and Matthew Fountain. Transfer and Flushing Evaluation for Potential Precipitated Solids in the 241-AP-106 to EMF Transfer Pipeline for DFLAW. Office of Scientific and Technical Information (OSTI), June 2020. http://dx.doi.org/10.2172/1764841.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Bryan, Samuel A., Amanda M. Lines, Michael J. Minette, Kirk J. Cantrell, and Sara R. Kimmig. AP-105 Melter Offgas Condensate and EMF Evaporator Concentrate Raman and LIBS Qualitative Evaluation for the use of In-Line Monitoring (Rev. 0). Office of Scientific and Technical Information (OSTI), March 2019. http://dx.doi.org/10.2172/1526724.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'EMF' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography