نتایج جستجو برای: microwave power

تعداد نتایج: 530924  

Journal: :Physical review letters 2011
Blake D Sherwin Joanna Dunkley Sudeep Das John W Appel J Richard Bond C Sofia Carvalho Mark J Devlin Rolando Dünner Thomas Essinger-Hileman Joseph W Fowler Amir Hajian Mark Halpern Matthew Hasselfield Adam D Hincks Renée Hlozek John P Hughes Kent D Irwin Jeff Klein Arthur Kosowsky Tobias A Marriage Danica Marsden Kavilan Moodley Felipe Menanteau Michael D Niemack Michael R Nolta Lyman A Page Lucas Parker Erik D Reese Benjamin L Schmitt Neelima Sehgal Jon Sievers David N Spergel Suzanne T Staggs Daniel S Swetz Eric R Switzer Robert Thornton Katerina Visnjic Ed Wollack

For the first time, measurements of the cosmic microwave background radiation (CMB) alone favor cosmologies with w = -1 dark energy over models without dark energy at a 3.2-sigma level. We demonstrate this by combining the CMB lensing deflection power spectrum from the Atacama Cosmology Telescope with temperature and polarization power spectra from the Wilkinson Microwave Anisotropy Probe. The ...

2008
Hiie Hinrikus Maie Bachmann Jaanus Lass

This paper is a review of the studies performed on microwave effects on resting electroencephalography (EEG) and visual memory and information processing during the last ten years. Some earlier results, obtained at the Biomedical Engineering Centre of the Tallinn University of Technology are reevaluated and generalized. Microwave radiation of 450 MHz, modulated at 7, 14, 21, 40, 70, 217 and 100...

2004
Kevin Hettenbach

Microwave drying technology has the potential for large production time and energy cost savings versus traditional vacuum drying methods for active pharmaceutical ingredient (API) applications. One of the most critical parameters in the drying process is the determination of the end point, usually at a specified moisture content. On-line mass spectrometry (MS) was used as a tool to monitor micr...

2010
Michael Matthew Elsbury Zoya Popović Paul D. Dresselhaus Negar Ehsan Erez Falkenstein Milan Lukić Joseph Mruk

This thesis addresses integrated circuit component, packaging, and microwave design for both AC and DC Josephson voltage standard (JVS) systems. The components developed in this work combine techniques from both the distributed and lumped-element microwave design in the frequency range 0–40 GHz. The National Institute of Standards and Technology (NIST) JVS systems rely on 10 000 to 300 000 micr...

Journal: :حفاظت گیاهان 0
سمیه قاسم زاده علی اصغر پورمیرزا محمد حسن صفرعلیزاده شبنم عاشوری

abstract during these protracted years, mankind’s main foods consist of grains-specially wheat, oats and rice. granary production and its storage have been one of the main concerns of a human being for a long time. microwave radiation as a safe insect control agent could secure high mortality rate of insect population by increasing the temperature of insects’ body and its niche. low temperature...

Journal: :International journal of radiation biology 2011
Hiie Hinrikus Maie Bachmann Jaanus Lass

PURPOSE The aim of this study was to evaluate the mechanism of parametric excitation of the electroencephalographic (EEG) rhythms by modulated microwave radiation. MATERIALS AND METHODS The model of parametric excitation based on polarization of water molecules was proposed and experimental results compared to the model. The experiments were carried out on 28 human volunteers. The 450 MHz mic...

Journal: :Journal of magnetic resonance imaging : JMRI 2002
Bensheng Qiu Christopher J Yeung Xiangying Du Ergin Atalar Xiaoming Yang

PURPOSE To develop a novel endovascular heating source using a magnetic resonance (MR) imaging guidewire (MRIG) to deliver controlled microwave energy into the target vessel for thermal enhancement of vascular gene transfection. MATERIALS AND METHODS A 0.032-inch MRIG was connected to a 2.45-GHz microwave generator. We 1) calculated the microwave power loss along the MRIG, 2) simulated the po...

2014
Shaoying Zhang Lei Zhang Rui Zhang

Apple juice inoculated with alicyclobacillus acidoterrestris was treated with microwave at different power and time, and the efficacy of microwave against alicyclobacillus acidoterrestris was investigated. The results showed that alicyclobacillus acidoterrestris quantity decreased with microwave enhancement or time extension. When juice was treated with microwave at higher than 720 W and for lo...

Journal: :Environmental science & technology 2008
Dorin Boldor Sundar Balasubramanian Shreya Purohit Kelly A Rusch

A continuous microwave system to treat ballast water inoculated with different invasive species was designed and installed atthe Louisiana State University Agricultural Center. The effectiveness of the system to deliver the required heating loads to inactivate the organisms present was studied. The targeted organisms were microalgae (Nannochloropsis oculata), zooplankton at two different growth...

Journal: :The Malaysian journal of pathology 1990
K H Ng S K Gan

We investigated microwave-stimulated fixation of tissues for transmission electron microscopy using a domestic microwave oven operating at a frequency of 2.45 GHz with an output power of 500W. Microwave-stimulated fixation, in 4% glutaraldehyde, of fresh rat kidney, liver, heart and brain tissues was compared to conventional fixation. Human renal biopsies were similarly studied. Electron micros...

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