نتایج جستجو برای: electromagnetic oscillation

تعداد نتایج: 114330  

In this study, the efficiencies of seed priming with electromagnetic field (0, 2, 4, and 6 mT; 30 minutes daily for 3 days) were investigated in Salvia nemorosa. The exposure to electromagnetic filed led to significant increases in biomass accumulation (mean=53.6 %). Electromagnetic filed treatments significantly increased K, Ca, Mg, and Fe contents in leaves by mean 39.5 %. The electromagnetic...

The purpose of this study was to investigate the effects of the North Atlantic Oscillation on the middle levels of Atmosphere and precipitation changes in the West of country. To do this, first monthly rainfall data of 17 synoptic stations of the West Country in period of 30 years from 1984 to 2014 of country were collected from Meteorological Organization. As well as North Atlantic Oscillation...

Journal: :physical chemistry and electrochemistry 0
hossein jalali jahromi department of chemistry, mahshahr branch, islamic azad university, mahshahr, iran

the reaction of ch3o2 radicals with acetaldehyde on the solid surface of nh4no3 has been studied in a flow capillary reactor at low pressure and room temperature. the experiments were performed using epr spectrometer combined with the kinetic method of radicals freezing. peroxy radicals revealed an oscillation complex behavior during the process regarding to the phenomenon of radicals multiplic...

The objective of this paper is to examine the effectiveness of wall oscillation as a control scheme of drag reduction. Two flow configurations are considered: constant flow rate and constant mean pressure gradient. The Navier-Stokes equations are solved using Fourier-Chebyshev spectral methods and the oscillation in sinusoidal form is enforced on the walls through boundary conditions for the sp...

Journal: :Optics and Photonics Journal 2023

What exactly are photons and dark matter? Modern physical theories do not explain them very well. In this paper, by extending the law of electromagnetic oscillation, space particles their operation can also be obtained. The system particle theory is formed under physics. conclusion quite consistent with many phenomena. There no contradictions that found. According to particles, there an uneven ...

Journal: :research journal of pharmacognosy 0
z. hasani sadrabadi department of plant biology, faculty of biological science, kharazmi university, tehran, iran. a. majd department of plant biology, faculty of biological science, kharazmi university, tehran, iran. m. hamzeloo-moghadam department of traditional pharmacy, school of traditional medicine, shahid beheshti university of medical sciences, tehran, iran. traditional medicine and materia medica research center, shahid beheshti university of medical sciences, tehran, iran. s. irian department of plant biology, faculty of biological science, kharazmi university, tehran, iran.

background and objectives: electric, magnetic and electromagnetic fields can act as stress factors with different effects on biological systems. due to the nutritional and medicinal values, and the increasing electromagnetic radiations, the present study was performed to investigate the effects of the electromagnetic field on the developmental stages and cytotoxic properties of okra. methods: b...

Journal: :تحقیقات نظام سلامت 0
سمیه بلقن آبادی دانشجوی کارشناسی ارشد گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران حسینعلی یوسفی مربی، عضو هیأت علمی گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران حبیب اله دهقان استادیار، عضو هیأت علمی، گروه مهندسی بهداشت حرفه ای، دانشکده بهداشت، دانشگاه علوم پزشکی اصفهان، ایران

background: with increased use of computers, exposure to electric and magnetic fields is increasing, the main objective of this study was to evaluate the electric and magnetic field strength in portable computers (laptops) and its relation with eyestrain users. methods: in this cross – sectional study, magnetic and electric fields in 125 laptop computers were measured from 30 cm and 50 cm dista...

2006
Walter Winter

We discuss the possible impact of astrophysical neutrino flux measurements at neutrino telescopes on the neutrino oscillation program of reactor experiments and neutrino beams. We consider neutrino fluxes from neutron sources, muon damped sources, and pion sources, where we parameterize the input from these sources in terms of the flux ratio R = φμ/(φe+ φτ ) which can be extracted from the muon...

2009
L. G. Velychko Y. K. Sirenko

Free electromagnetic oscillations in a quasi-optical open resonator, i.e., in a resonator whose basic dimensions are much grater than the operating wavelength λ = 2π/k, are generated by the beams of plane waves propagating in opposite directions between resonator’s mirrors. By moving along the closed paths, the beams recover their phase characteristics when returning at some fixed point thus en...

2006
John F. Wager Rick E. Presley Hai Chiang David Hong

approved: John F. Wager This thesis focuses on two aspects of transparent electronics, SnO2 transparent thin-film transistors (TTFTs) and transparent circuits. Both depletionand enhancement-mode SnO2 TTFTs are realized. The maximum effective mobility for the depletionand enhancement-mode devices are 2 cmVs and 0.8 cmVs, respectively. A variety of techniques to decrease the carrier concentration...

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