نتایج جستجو برای: Air Freezing Index

تعداد نتایج: 610968  

Journal: :desert 2008
a. khalili h. rahimi z. agha shariatmadari

depth of frost penetration is one of the main indices in agriculture, civil and transportation engineering. soil temperature is a function of several factors including: topography, solar radiation, air temperature, moisture content and other physical properties of soil such as thermal capacity, coefficient of heat conductivity, and specific heat. the main objective of the present paper is to de...

Journal: :Facta universitatis - series: Architecture and Civil Engineering 2004

Journal: :Korean journal for food science of animal resources 2015
Yun-Sang Choi Su-Kyung Ku Ji-Yun Jeong Ki-Hong Jeon Young-Boong Kim

The ultrastructure in the beef muscle of the electro-magnetic resonance and air blast freezing during the frozen storage, and the changes in the quality characteristics after thawing were evaluated. The size of ice crystal was small and evenly formed in the initial freezing period, and it showed that the size was increased as the storage period was elapsed (p<0.05). The beef stored by the elect...

Journal: :Biocontrol science 2014
Takahiro Ohnishi Sayuri Akuzawa Hiroko Furusawa Tomoya Yoshinari Yoichi Kamata Yoshiko Sugita-Konishi

Kudoa septempunctata in olive flounder meat was inactivated using 3 distinct freezing methods:liquid freezing for 5 min, air blast freezing at -30℃ for 5 h, and -80℃ for 1 h. The fracture curve of olive flounder meat subjected to liquid freezing resembled that of meat stored at 4℃, indicating that the structure of olive flounder muscle was well preserved. In contrast, air blast freezing induced...

Journal: :Journal of applied physiology 1996
U Danielsson

Low air temperatures and high wind speeds are associated with an increased risk of freezing of the exposed skin. P. A. Siple and C. F. Passel (Proc. Am. Phil. Soc. 89: 177-199, 1945) derived their windchill index from cooling experiments on a water-filled cylinder to quantify the risk of frostbite. Their results are reexamined here. It is found that their windchill index does not correctly desc...

2017
Yonghong Guo Tongrui Cheng Xiaoze Du Lijun Yang

In cold winter weather, the air-cooled condensers (ACCs) face serious freezing risks, especially with part load of the power generating unit. Therefore, it is of benefit to investigate the heat transfer process between the turbine exhaust steam and cooling air, by which the freezing mechanism of the finned tube bundles can be revealed. In this work, the flow and heat transfer models of the cool...

Journal: :Tree physiology 2003
Jarmila Pittermann John Sperry

We tested the hypotheses that freezing-induced embolism is related to conduit diameter, and that conifers and angiosperms with conduits of equivalent diameter will exhibit similar losses of hydraulic conductivity in response to freezing. We surveyed the freeze-thaw response of conifers with a broad range of tracheid diameters by subjecting wood segments (root, stem and trunk wood) to a freeze-t...

Journal: :Parkinsonism & related disorders 2012
Daniel S Peterson Meir Plotnik Jeffery M Hausdorff Gammon M Earhart

BACKGROUND Freezing of gait is a debilitating and common gait disturbance observed in individuals with Parkinson's disease (PD). Although the underlying mechanisms of freezing remain unclear, bilateral coordination of steps, measured as a phase coordination index, has been suggested to be related to freezing. Phase coordination index has not, however, been measured during tasks associated with ...

Journal: :فرآوری و نگهداری مواد غذایی 0
پرستو کریمی فر دانشگاه آزاد اسلامی، واحد قوچان، گروه صنایع غذایی ریحانه احمدزاده قویدل دانشگاه آزاد اسلامی، واحد قوچان، گروه صنایع غذایی مهدی قیافه داودی مرکز تحقیقات کشاورزی و منابع طبیعی خراسان رضوی، مشهد

osmo-dehydofreezing is a combined process consisting of osmotic dehydration followed by air dehydration and then freezing. osmodehydro freezing is an advances method with osmodrying and freezing of fruits and vegetables. purpose of this study is the production of products with high shelf life properties. in this study plums samples after peeling were dipped in solutions contain of sucrose, asco...

2003
K. G. Libbrecht

We have investigated the formation of 10-50 mm long “ice spikes” that sometimes appear on the free surface of water when it solidifies. By freezing water under different conditions, we measured the probability of ice spike formation as a function of: 1) the air temperature in the freezing chamber, 2) air motion in the freezing chamber (which promotes evaporative cooling), 3) the quantity of dis...

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