نتایج جستجو برای: vacuum cooling

تعداد نتایج: 100737  

Journal: :Foodborne pathogens and disease 2010
Vijay K Juneja Anna C S Porto-Fett Kelly Gartner Linda Tufft John B Luchansky

We conducted stabilization studies to determine the ability of Clostridium perfringens spores to germinate and grow during exponential cooling of a commercial formulation of pork scrapple. Scrapple was inoculated with a mixture of three strains of C. perfringens spores (NTCC 8238, NCTC 8239, and ATCC 10288), vacuum packaged, and reheated (20 min/93.3 degrees C) in a circulating water bath. The ...

2005
Walfre Franco Jie Liu Guillermo Aguilar

Clinical results recently demonstrated improvement in lesion blanching using local vacuum to target small vessels in port wine stains (PWS) birthmarks laser therapy. The release of cryogen spurts under vacuum pressures may also offer many advantages to this therapeutic procedure due to different spray-surface interactions under vacuum conditions, which may lead to enhanced heat transfer. The ob...

2017
Indu Raj

To study the effect of different cooling rates after glaze firing on Radius of radial crack, Fracture toughness and Microhardness of Alumina reinforced porcelain. Total 30 porcelain discs reinforced with aluminium oxide of 8mm diameter×0.6mmthickness were prepared. Specimens were divided into three groups, each group containing ten discs. They were positioned at the entrance of the furnace with...

2002
Keun-Taek Oh Chung-Ju Hwang Yong-Soo Park Kyoung-Nam Kim

Heat treatments are applied to orthodontic wires in order to relieve the stresses arising during orthodontic work. Four types of wires were heated in air, argon or vacuum environments, and cooled in the furnace or in a water bath. The susceptibility to corrosion and mechanical properties of the heat-treated wires were investigated. Heat treatment marginally increased the yield strength and elas...

Journal: :Desalination 2021

Solar still is widely used for supplying fresh water to small communities in remote areas. One drawback of this technique lies the low freshwater yield. Recent studies on stills multi-effect and vacuum design proved their potential high However, such systems suffer from electricity consumption insufficient cooling. In study, a novel system with periodic pressure control scheme immersion cooling...

Journal: :Lab on a chip 2011
Chiwan Koo Richard F Godley Jaewon Park Mary P McDougall Steven M Wright Arum Han

We present the development of a microfluidically cryo-cooled planar coil for magnetic resonance (MR) microscopy. Cryogenically cooling radiofrequency (RF) coils for magnetic resonance imaging (MRI) can improve the signal to noise ratio (SNR) of the experiment. Conventional cryostats typically use a vacuum gap to keep samples to be imaged, especially biological samples, at or near room temperatu...

احمدیان نمینی, ساسان, شاکر, حامد, عباسی دوانی, فریدون, قاسمی, فرشاد, لامعی رشتی, محمد,

One of the most commonly used types of accelerators is linear electron accelerator. There is a project is in progress in Institute for research in fundamental sciences (IPM) aiming to design and build such an accelerator. It is defined in such a way that all parts to be built in Iran as possibly as it can. In this paper, after a brief explanation of the components of an electron linear accelera...

Journal: : 2023

The heat balance method is developed to optimize cooling modes of large-sized optics in a special cryogenic-vacuum system by considering complicated transfer the minimize thermal deformations. Keywords: radiative transfer, conductive balance, thermostat, collimator.

Journal: :Journal of Chemical Engineering & Process Technology 2013

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