keyword
MENU ▼
Read by QxMD icon Read
search

EMF

keyword
https://www.readbyqxmd.com/read/28806939/effect-of-electromagnetic-fields-on-human-osteoarthritic-and-non-osteoarthritic-chondrocytes
#1
Julia Isabelle Redeker, Bärbel Schmitt, Nele Pascale Grigull, Christian Braun, Andreas Büttner, Volkmar Jansson, Susanne Mayer-Wagner
BACKGROUND: Studies of the effects of electromagnetic fields (EMFs) on cartilaginous cells show a broad range of outcomes. However EMFs are not yet clinically applied as standard treatment of osteoarthritis, as EMF effects are showing varying outcomes in the literature. The aim of this study was to examine effects of EMFs (5 mT or 8 mT) on osteoarthritic (OA) and non-OA chondrocytes in order to investigate whether EMF effects are related to chondrocyte and EMF quality. METHODS: Pellets of human OA and non-OA chondrocytes were exposed to a sinusoidal 15 Hz EMF produced by a solenoid...
August 14, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28802627/sensorless-control-for-switched-reluctance-motor-based-on-special-position-detection
#2
Jie Shao, Zhiquan Deng, Yu Gu
This paper proposes a new sensorless control approach for switched reluctance motor (SRM) in the single pulse control mode in high speed operation. The sensorless method uses the cross point position of transformer electromotive force (EMF) and motional back electromotive force (BEMF) to estimate the rotor position. The cross point position can be derived from the inductance model of SRM, and it is regarded as reference position. The rotor position can be calculated by detecting the special position for each electrical cycle...
August 9, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28792448/auxiliary-sensor-based-borehole-transient-electromagnetic-system-for-the-nondestructive-inspection-of-multipipe-strings
#3
Bo Dang, Ling Yang, Na Du, Changzan Liu, Ruirong Dang, Bin Wang, Yan Xie
Transient electromagnetic (TEM) techniques are widely used in the field of geophysical prospecting. In borehole detection, the nondestructive inspection (NDI) of a metal pipe can be performed efficiently using the properties of eddy currents. However, with increasing concern for safety in oil and gas production, more than one string of pipe is used to protect wellbores, which complicates data interpretation. In this paper, an auxiliary sensor-based borehole TEM system for the NDI of multipipe strings is presented...
August 9, 2017: Sensors
https://www.readbyqxmd.com/read/28782873/stable-morphological-physiological-and-neural-protein-expression-changes-in-rat-bone-marrow-mesenchymal-stem-cells-treated-with-electromagnetic-field-and-nitric-oxide
#4
Nazanin Haghighat, Parviz Abdolmaleki, Mehrdad Behmanesh, Mohammad Satari
As an external physical factor, electromagnetic field (EMF) may influence cellular processes and nitric oxide (NO) by serving as a secondary messenger molecule in intracellular signaling cascades. Effects of these factors were evaluated simultaneously on viability, morphology, and variation of calcium ion content, and neural protein marker expression in rat bone marrow mesenchymal stem cells (BMSCs). The mesenchymal stem cells were isolated from rat bone marrow and cultured. Deta-NO as a donor molecule of NO was added to cell culture medium after several passages...
August 7, 2017: Bioelectromagnetics
https://www.readbyqxmd.com/read/28780472/different-profiles-of-the-mrna-levels-of-dna-repair-genes-in-mcf-7-and-sh-sy5y-cells-after-treatment-with-combination-of-cisplatin-50-hz-electromagnetic-field-and-bleomycin
#5
Fatemeh Sanie-Jahromi, Mostafa Saadat
Neurotoxicity is known to be a major dose-limiting adverse effect of cisplatin (CDDP), alone or in combination with other chemicals. DNA repair capacity serve as a neuroprotective factor against CDDP. The purpose of this study was to evaluate the effect of 50-Hz electromagnetic field (EMF) in combination with CDDP and bleomycin (Bleo) on expression of some of DNA repair genes (GADD45A, XRCC1, XRCC4, Ku70, Ku80, DNA-PKcs and LIG4) in MCF-7 (breast cancer) and SH-SY5Y (neuroblastoma) cell lines. MCF-7 and SH-SY5Y cells were pre-treated with CDDP in the presence or absence of EMF and then exposed to different concentration of Bleo...
August 3, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28766560/radiofrequency-electromagnetic-field-exposure-in-everyday-microenvironments-in-europe-a-systematic-literature-review
#6
Sanjay Sagar, Stefan Dongus, Anna Schoeni, Katharina Roser, Marloes Eeftens, Benjamin Struchen, Milena Foerster, Noëmi Meier, Seid Adem, Martin Röösli
The impact of the introduction and advancement in communication technology in recent years on exposure level of the population is largely unknown. The main aim of this study is to systematically review literature on the distribution of radiofrequency electromagnetic field (RF-EMF) exposure in the everyday environment in Europe and summarize key characteristics of various types of RF-EMF studies conducted in the European countries. We systematically searched the ISI Web of Science for relevant literature published between 1 January 2000 and 30 April 2015, which assessed RF-EMF exposure levels by any of the methods: spot measurements, personal measurement with trained researchers and personal measurement with volunteers...
August 2, 2017: Journal of Exposure Science & Environmental Epidemiology
https://www.readbyqxmd.com/read/28756602/anxiety-like-behavioural-effects-of-extremely-low-frequency-electromagnetic-field-in-rats
#7
Natasa Z Djordjevic, Milica G Paunović, Aleksandar S Peulić
In recent years, extremely low-frequency electromagnetic field (ELF-EMF) has received considerable attention for its potential biological effects. Numerous studies have shown the role of ELF-EMF in behaviour modulation. The aim of this study was to investigate the effect of short-term ELF-EMF (50 Hz) in the development of anxiety-like behaviour in rats through change hypothalamic oxidative stress and NO. Ten adult male rats (Wistar albino) were divided in two groups: control group-without exposure to ELF-EMF and experimental group-exposed to ELF-EMF during 7 days...
July 29, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28747141/biochemical-and-pathological-changes-in-the-male-rat-kidney-and-bladder-following-exposure-to-continuous-900-mhz-electromagnetic-field-on-postnatal-days-22-59
#8
Sibel Türedi, Gökçen Kerimoğlu, Tolga Mercantepe, Ersan Odacı
PURPOSE: To investigate the effect on male rat kidney and bladder tissues of exposure to 900-megahertz (MHz) electromagnetic field (EMF) applied on postnatal days 22-59, inclusive. MATERIALS AND METHODS: Twenty-four male Sprague Dawley rats, aged 21 days, were used. These were divided equally into one of three groups, control (CG), sham (SG) or EMF (EMFG). CG was not exposed to any procedure. SG rats were kept inside a cage, without being exposed to the effect of EMF, for 1 h a day on postnatal days 22-59, inclusive...
July 27, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/28737745/electromagnetized-gold-nanoparticles-mediate-direct-lineage-reprogramming-into-induced-dopamine-neurons-in-vivo-for-parkinson-s-disease-therapy
#9
Junsang Yoo, Euiyeon Lee, Hee Young Kim, Dong-Ho Youn, Junghyun Jung, Hongwon Kim, Yujung Chang, Wonwoong Lee, Jaein Shin, Soonbong Baek, Wonhee Jang, Won Jun, Soochan Kim, Jongki Hong, Hi-Joon Park, Christopher J Lengner, Sang Hyun Moh, Youngeun Kwon, Jongpil Kim
Electromagnetic fields (EMF) are physical energy fields generated by electrically charged objects, and specific ranges of EMF can influence numerous biological processes, which include the control of cell fate and plasticity. In this study, we show that electromagnetized gold nanoparticles (AuNPs) in the presence of specific EMF conditions facilitate an efficient direct lineage reprogramming to induced dopamine neurons in vitro and in vivo. Remarkably, electromagnetic stimulation leads to a specific activation of the histone acetyltransferase Brd2, which results in histone H3K27 acetylation and a robust activation of neuron-specific genes...
July 17, 2017: Nature Nanotechnology
https://www.readbyqxmd.com/read/28735146/influence-of-electromagnetic-pulse-on-the-offspring-sex-ratio-of-male-balb-c-mice
#10
Jin-Hui Li, Da-Peng Jiang, Ya-Feng Wang, Jia-Jia Yan, Qi-Yan Guo, Xia Miao, Hai-Yang Lang, Sheng-Long Xu, Jun-Ye Liu, Guo-Zhen Guo
Public concern is growing about the exposure to electromagnetic fields (EMF) and its effect on male reproductive health. Detrimental effect of EMF exposure on sex hormones, reproductive performance and sex-ratio was reported. The present study was designed to clarify whether paternal exposure to electromagnetic pulse (EMP) affects offspring sex ratio in mice. 50 male BALB/c mice aged 5-6 weeks were exposed to EMP daily for 2 weeks before mated with non-exposed females at 0d, 7d, 14d, 21d and 28d after exposure...
June 21, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28734102/are-electromagnetic-fields-in-incubators-a-risk-factor-for-autism
#11
Carlo V Bellieni, Giuseppe Buonocore
Hugo Lagercrantz recently argued (1) that a possible cause of infantile autism was the unnatural isolation that babies experienced in neonatal incubators. Atypical brain connectivity has been detected in children with autism and it is possible that this may be also due to environmental factors, including the lack of physiological stimuli that is typically found in the incubator environment. We suggest that also another factor may expose babies in incubators to the risk of developing autistic traits and that is the high electromagnetic fields (EMF) produced by the incubator's electric engine...
July 22, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28731478/role-of-plant-fungal-nutrient-trading-and-host-control-in-determining-the-competitive-success-of-ectomycorrhizal-fungi
#12
Sara Hortal, Krista Lynn Plett, Jonathan Michael Plett, Tom Cresswell, Mathew Johansen, Elise Pendall, Ian Charles Anderson
Multiple ectomycorrhizal fungi (EMF) compete to colonise the roots of a host plant, but it is not known whether their success is under plant or fungal control, or a combination of both. We assessed whether plants control EMF colonisation by preferentially allocating more carbon to more beneficial partners in terms of nitrogen supply or if other factors drive competitive success. We combined stable isotope labelling and RNA-sequencing approaches to characterise nutrient exchange between the plant host Eucalyptus grandis and three Pisolithus isolates when growing alone and when competing either indirectly (with a physical barrier) or directly...
July 21, 2017: ISME Journal
https://www.readbyqxmd.com/read/28731073/-effect-of-stress-and-intesity-of-mobile-phone-using-on-the-health-and-subjective-symptoms-in-gsm-workers
#13
Agata Szyjkowska, Elżbieta Gadzicka, Wiesław Szymczak, Alicja Bortkiewicz
BACKGROUND: There are no available data on the health consequences that may result from the synergistic effects of electromagnetic fields (EMF) and stress. Understanding the mechanisms of the simultaneous exposure will make it possible to develop procedures to minimize adverse health effects in professionals using mobile phones. MATERIAL AND METHODS: A questionnaire survey was conducted in 600 randomly selected people to obtain data on their health status and the prevalence of subjective symptoms related to the mobile phones using...
July 26, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/28715856/nitrogen-deposition-changes-ectomycorrhizal-communities-in-swiss-beech-forests
#14
L C de Witte, N P Rosenstock, S van der Linde, S Braun
Atmospheric pollution has implications for the health and diversity of temperate forests covering large parts of central Europe. Long-term elevated anthropogenic deposition of nitrogen (N) is driving forest ecosystems from the limitation by N to other nutrients and is found to affect tree health and ectomycorrhizal fungi (EMF), which most trees depend on for nutrient uptake. However, the consequence of EMF community changes for trees remains unclear. Therefore, we investigated changes in EMF communities on root tips and in soil of beech forests along a N deposition gradient ranging between 16 and 33kgNha(-1)a(-1), where high N deposition was found to negatively affect tree growth and nutrient levels...
July 11, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28713615/effects-of-radiofrequency-exposure-emitted-from-a-gsm-mobile-phone-on-proliferation-differentiation-and-apoptosis-of-neural-stem-cells
#15
Mahsa Eghlidospour, Amir Ghanbari, Seyyed Mohammad Javad Mortazavi, Hassan Azari
Due to the importance of neural stem cells (NSCs) in plasticity of the nervous system and treating neurodegenerative diseases, the main goal of this study was to evaluate the effects of radiofrequency radiation emitted from a GSM 900-MHz mobile phone with different exposure duration on proliferation, differentiation and apoptosis of adult murine NSCs in vitro. We used neurosphere assay to evaluate NSCs proliferation, and immunofluorescence assay of neural cell markers to examine NSCs differentiation. We also employed alamarBlue and caspase 3 apoptosis assays to assess harmful effects of mobile phone on NSCs...
June 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28708116/functionalization-of-endohedral-metallofullerenes-with-reactive-silicon-and-germanium-compounds
#16
REVIEW
Masahiro Kako, Shigeru Nagase, Takeshi Akasaka
Exohedral derivatization of endohedral metallofullerenes (EMFs) has been exploited as a useful method for characterizing the structural and chemical properties of EMFs, and for functionalizing them for potential applications. The introduction of heteroatoms, such as electropositive silicon atoms, to fullerene cages is a novel functionalization method that remarkably affects the electronic characteristics of fullerenes. This review comprehensively describes the results of the reactions of monometallofullerene, dimetallofullerene, and trimetallic nitride template EMFs with disilirane, silirane, silylene, and digermirane, which afforded the corresponding silylated and germylated fullerenes...
July 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28681951/natural-succession-on-abandoned-cropland-effectively-decreases-the-soil-erodibility-and-improves-the-fungal-diversity
#17
Chao Zhang, Guobin Liu, Zilin Song, Dong Qu, Linchuan Fang, Lei Deng
Changes in plants and soils during natural succession have been evaluated, but little is known about the effects of succession on the activities of soil microbes and their interactions with soil erodibility. We conducted a field study on the Chinese Loess Plateau, typical of this semiarid area, to determine the effect of secondary succession on the stability of soil structure against erosion and on the composition of soil fungal communities. Characteristics of plant, soil, and fungal communities were assessed across a 30-year chronosequence of grassland developed from abandoned cropland...
July 6, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28679207/lu2-c2n-2n-82-84-86-crystallographic-evidence-of-direct-lu-lu-bonding-between-two-divalent-lutetium-ions-inside-fullerene-cages
#18
Wangqiang Shen, Lipiao Bao, Yongbo Wu, Changwang Pan, Shasha Zhao, Hongyun Fang, Yunpeng Xie, Peng Jin, Ping Peng, Fang-Fang Li, Xing Lu
Although most of the M2C2n-type metallofullerenes (EMFs) tend to form carbide cluster EMFs, we report herein that Lu-containing EMFs Lu2C2n (2n = 82, 84, 86) are actually dimetallofullerenes (di-EMFs), namely, Lu2@Cs(6)-C82, Lu2@C3v(8)-C82, Lu2@D2d(23)-C84, and Lu2@C2v(9)-C86. Unambiguous X-ray results demonstrate the formation of a Lu-Lu single bond between two lutetium ions which transfers four electrons in total to the fullerene cages, thus resulting in a formal divalent state for each Lu ion. Population analysis indicates that each Lu atom formally donates a 5d electron and a 6s electron to the cage with the remaining 6s electron shared with the other Lu atom to form a Lu-Lu single bond so that only four electrons are transferred to the fullerene cages with the formal divalent valence for each lutetium ion...
July 17, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28678737/functional-brain-mri-in-patients-complaining-of-electrohypersensitivity-after-long-term-exposure-to-electromagnetic-fields
#19
Gunnar Heuser, Sylvia A Heuser
INTRODUCTION: Ten adult patients with electromagnetic hypersensitivity underwent functional magnetic resonance imaging (fMRI) brain scans. All scans were abnormal with abnormalities which were consistent and similar. It is proposed that fMRI brain scans be used as a diagnostic aid for determining whether or not a patient has electromagnetic hypersensitivity. Over the years we have seen an increasing number of patients who had developed multi system complaints after long term repeated exposure to electromagnetic fields (EMFs)...
July 5, 2017: Reviews on Environmental Health
https://www.readbyqxmd.com/read/28665795/electromagnetic-fields-at-a-mobile-phone-frequency-900-mhz-trigger-the-onset-of-general-stress-response-along-with-dna-modifications-in-eisenia-fetida-earthworms
#20
Jean-Paul Bourdineaud, Maja Šrut, Anamaria Štambuk, Mirta Tkalec, Daniel Brèthes, Krešimir Malarić, Göran I V Klobučar
Eisenia fetida earthworms were exposed to electromagnetic field (EMF) at a mobile phone frequency (900 MHz) and at field levels ranging from 10 to 120 V m-1 for a period of two hours (corresponding to specific absorption rates ranging from 0.13 to 9.33 mW kg-1). Potential effects of longer exposure (four hours), field modulation, and a recovery period of 24 h after two hours of exposure were addressed at the field level of 23 V m-1. All exposure treatments induced significant DNA modifications as assessed by a quantitative random amplified polymorphic DNA-PCR...
June 27, 2017: Arhiv za Higijenu Rada i Toksikologiju
keyword
keyword
45990
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"