نتایج جستجو برای: when the temperature falls below zero degrees centigrade

تعداد نتایج: 16187438  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید باهنر کرمان - دانشکده ریاضی و کامپیوتر 1389

the concepts of similarity and dissimilarity have been the interest of many researchers. basically, in the studies the similarity between two objects or phenomena, has been discussed. in this thesis, we consider the case when the resemblance or similarity among three objects or phenomena of a set, 3-similarity in our terminology, is desired. later we will extend our definitions and propos...

2016

always fatal?predominates during hot weather, and it rapidly causes great ravages among the infected herds. Fever is the first s}7mptom, the temperature rises rapidly, after a period of rising oscillations it remains stationary, and death comes or sometimes the fever falls. At the approach of death the heart beats are frequent and feeble, and often the temperature falls to below normal. The uri...

Journal: :Physical review letters 2013
M Dennison M Sheinman C Storm F C MacKintosh

We study the elastic properties of thermal networks of Hookean springs. In the purely mechanical limit, such systems are known to have a vanishing rigidity when their connectivity falls below a critical, isostatic value. In this work, we show that thermal networks exhibit a nonzero shear modulus G well below the isostatic point and that this modulus exhibits an anomalous, sublinear dependence o...

Journal: :European journal of orthodontics 1999
O Barwart J M Rollinger A Burger

Differential scanning calorimetry (DSC) was used to determine the transition temperature ranges (TTR) of four types of super-elastic orthodontic nickel-titanium coil springs (Sentalloy). A knowledge of the TTR provides information on the temperature at which a NiTi wire or spring can assume superelastic properties and when this quality disappears. The spring types in this study can be distingui...

Journal: :journal of medicinal plants and by-products 0

ecological study of behavior as essential elements of their ecosystems and habitat characteristics in order to find appropriate solutions to maintain, revise and revitalize this important part of the renewable natural resources. this present research is about autecology of lagochilus macracanthus fisch. & c. a. mey. study area is located in near of nodooshan, yazd, iran. selected sites were wit...

Journal: :Chemistry and physics of lipids 1999
S Tristram-Nagle Y Isaacson Y Lyatskaya Y Liu K Brummond J Katsaras J F Nagle

This study focuses on the mixed-chain lipid myristoylpalmitoylphosphatidylcholine (MPPC) near full hydration. The lipid, synthesized according to the procedure of (Mason et al., 1981a, has a low degree of acyl chain migration. When MPPC is temperature-jumped (T-jumped) from the L alpha phase (T = 38 degrees C) to T = 20 degrees C or below, a subgel phase forms; this formation takes less than 1 ...

Cold drawing process is one of the most used metals forming processes in industries for forming seamless tubes. This process of plastic deformation of metals occurs below the recrystallization temperature and is generally performed at room temperature. When metal is cold worked, upon the release of forming force, the springback occurs. In this paper, the springback effect of the seamless tube t...

2008
Dmitri Diakonov Victor Petrov

We present a semiclassical approach to the SU(N) Yang–Mills theory whose partition function at nonzero temperatures is approximated by a saddle point – an ensemble of an infinite number of interacting dyons of N kinds. The ensemble is governed by an exactly solvable 3d quantum field theory, allowing calculation of correlations functions relevant to confinement. We show that known criteria of co...

Journal: :Physiological and biochemical zoology : PBZ 2000
M Frederich B DeWachter F J Sartoris H O Pörtner

Elevated Mg(2+) levels in the hemolymph ([Mg(2+)](HL)) of brachyuran crabs have recently been demonstrated to limit cold tolerance by reducing motor and circulatory activity. Therefore, the limiting function of elevated [Mg(2+)](HL) on circulatory performance and arterial hemolymph flow was investigated by the pulsed-Doppler technique in the spider crab Maja squinado during progressive cooling ...

سید جمال هاشمی, , سید حسن خوشنویس, , عیسی غلامپور عزیزی, ,

Background: Aflatoxins are severe toxic secondary metabolites found in most plant products. When animals consume contaminated feed stuff to Aflatoxin B1 (AFB1), the toxin is metabolized by liver and is excreted as Aflatoxin M1 (AFM1) via milk. Aflatoxins are acute toxic compounds, immunosuppressive, mutagen, tratogen and carcinogen. Methods: During the winter of 2006, pasteurized and steril...

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