نتایج جستجو برای: MW irradiation

تعداد نتایج: 81018  

2016
Jicheng Zhou Wentao Xu Zhimin You Zhe Wang Yushang Luo Lingfei Gao Cheng Yin Renjie Peng Lixin Lan

The use of microwave (MW) irradiation to increase the rate of chemical reactions has attracted much attention recently in nearly all fields of chemistry due to substantial enhancements in reaction rates. However, the intrinsic nature of the effects of MW irradiation on chemical reactions remains unclear. Herein, the highly effective conversion of NO and decomposition of H2S via MW catalysis wer...

ژورنال: بوم شناسی آبزیان 2016
Ghaeni, Mansoreh, Hojjati Vayghan, Reza, Roomiani, Laleh, Sedighi Bonabi, Rasol,

Artemia, as live food, is of vital importance in aquaculture. In this study, we have studied the helium-neon (He-Ne) laser beam with 10 mw on the hatching and life span of Artemia cysts. He-Ne laser irradiation was performed with a 10 mw power at 3, 4 and 5 h irradiation periods. Cysts were hatched by standard method. Hatching percentage after 4 h of irradiation was more than other treatments a...

2018
Mohammad R. Talebnejad Ali Sadeghi-Sarvestani M. Hossein Nowroozzadeh Seyed Mohammad J. Mortazavi Abbas Alighanbari Mohammad R. Khalili

Purpose Mobile cell phones are used extensively these days, and their microwave (MW) radiation has been shown to affect the eye. The purpose of the present study was to evaluate the effects of MW radiation on rabbit retina. Methods This experimental study (concluded in 2015) was conducted on 40 adult white New Zealand rabbits. A Global System for Mobile Communications (GSM) cell phone simulat...

Journal: :Chemistry 2007
Sung Hwa Jhung Taihuan Jin Young Kyu Hwang Jong-San Chang

Microporous materials, such as silicalite-1 and VSB-5 molecular sieves, have been synthesized by both microwave irradiation (MW) and conventional electric heating (CE). The accelerated syntheses by microwave irradiation can be quantitatively investigated by various heating modes conducted in two steps such as MW-MW, MW-CE, CE-MW, and CE-CE (in the order of nucleation-crystal growth). In the cas...

Journal: :Cancer research 1980
B K Chang A T Huang W T Joines

We have studied the effects of low-power-density microwave (MW) radiation (continuous and pulsed wave with average power density of 10 milliwatts/sq cm and range of 5 to 50 milliwatts/sq cm; frequency, 1.0 GHz) on the uptake and action of methotrexate (MTX), the inhibition of DNA synthesis in L1210 murine leukemia cells in vitro, and the MTX treatment of mice bearing this leukemia. Using short-...

2017
Ming-Jer Tsai Yen-Zen Wang Chia-Yun Chang Marinos Pitsikalis

The presence of N-phenyl-p-phenylenediamine (PPDA: a dimer of aniline) during microwave (MW) irradiation can significantly improve Pt-loading on the XC72 carbon matrix as a catalyst support of proton exchange membrane fuel cells (PEMFCs). PPDA is converted to an emeraldine base state during MW-assisted redox reaction, which is characterized by both FTIR and Raman spectra. The increased degree o...

Journal: :Chemphyschem : a European journal of chemical physics and physical chemistry 2006
Jurriaan Beckers Lars M van der Zande Gadi Rothenberg

The problem of soot emissions from diesel engines is introduced and the possible solution of combining doped perovskites and microwave (mw) irradiation to "clean up" diesel soot filters is outlined. Eighteen doped perovskite catalysts are synthesized and tested for propane and CO oxidation, which are taken as model components for soot. The activity, selectivity, and SO2 tolerance are compared u...

2014
Yevgeniya Kalachyova Oleksiy Lyutakov Petr Slepicka Roman Elashnikov Vaclav Svorcik

In this work, we describe laser modification of poly(methyl methacrylate) films doped with Fast Red ITR, followed by dopant exclusion from the bulk polymer. By this procedure, the polymer can be modified under extremely mild conditions. Creation of surface ordered structure was observed already after application of 15 pulses and 12 mJ cm(-2) fluence. Formation of grating begins in the hottest p...

Journal: :Investigative ophthalmology & visual science 2014
Arthur Hammer Olivier Richoz Samuel Arba Mosquera David Tabibian Florence Hoogewoud Farhad Hafezi

PURPOSE New corneal cross-linking (CXL) devices are capable of using higher UV-A light irradiances than used in original CXL protocols. The Bunsen-Roscoe law states that a photochemical reaction should stay constant if the delivered total energy is kept constant; however, little clinical data are available to support this hypothesis. METHODS We investigated the biomechanical properties of fou...

2013
Newton Sesma Alessandra Lima Rocha Dalva Cruz Laganá Bruno Costa Susana Morimoto

systemic infections. Microwave irradiation has been used as an efficient method of denture disinfection. Even though current methods eliminate denture-base microorganisms, a recurrence rate of denture stomatitis (DS) is still observed among denture-wearing patients. It was hypothesized that microwave disinfection kills microorganisms but do not remove dead bacteria from the denture surface. To ...

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