نتایج جستجو برای: cold

تعداد نتایج: 105202  

شهیر, محمدحسین , لطف الهیان, هوشنگ , نعمتی, محمد حسین , هرکی نژاد, محمدطاهر ,

  This experiment was designed to determine the role of vitamin E and coenzyme Q10 antioxidant on immunity of broilers in cold stress conditions. For this purpose, 500 male chicks in a completely randomized design with 5 treatments, 5 replicates and 20 chicks in each replicate were tested in 25 experimental units. Treatments were: positive control (normal conditions growth without antioxidants)...

To study the effect of Piriformospora indica and paclobutrazol (PBZ) as a plant growth regulator for inducing cold stress tolerance in green beans plant (Phaseolus vulgaris L.), a greenhouse experiment was performed as a factorial arrangement based on completely randomized design with three replications. Treatments consisted of three cold stress levels (control, three and six days cold stress a...

The Moldavian dragonhead (Dracocephalum moldavica L., Lamiaceae) is an annual medicinal plant with beneficial nutritional sources that plays important roles in human and animal feed. Nanoparticles and cold atmospheric plasma increase biochemical compounds in plants. In this study, the effects of copper nanoparticles and cold atmospheric plasma on biochemical indices of the medicinal plant Draco...

2016
Felipe M. Vigoder Darren J. Parker Nicola Cook Océane Tournière Tanya Sneddon Michael G. Ritchie

Cold acclimation is a critical physiological adaptation for coping with seasonal cold. By increasing their cold tolerance individuals can remain active for longer at the onset of winter and can recover more quickly from a cold shock. In insects, despite many physiological studies, little is known about the genetic basis of cold acclimation. Recently, transcriptomic analyses in Drosophila virili...

Journal: :journal of modern processes in manufacturing and production 2014
mohammad heydari vini1

there is a complicated relation between cold flat rolling parameters such as effective input parameters of cold rolling, output cold rolling force and exit thickness of strips. in many mathematical models, the effect of some cold rolling parameters has been ignored and the outputs have not a desirable accuracy. in the other hand, there is a special relation among input thickness of strips, the ...

Journal: :علوم گیاهان زراعی ایران 0
شهریار ساسانی استادیار مرکز تحقیقات کشاورزی کرمانشاه، رضا توکل افشاری استاد، پردیس کشاورزی و منابع طبیعی دانشگاه تهران سیروس محفوظی استاد موسسه تهیه بذر و نهال

cold tolerance is an adaptative mechanism that plants in temperate climates require to survive and grow in suboptimal temperatures.  exposed plant to low temperature produces a myriad of measurable changes in biochemical characters that are often highly correlated with plant cold tolerance.  a key element of cereal adaptation to cold is represented by the capacity for physiological adjustments ...

Journal: :به زراعی کشاورزی 0
روح الله کریمی استادیار گروه مهندسی فضای سبز، دانشکدۀ کشاورزی، دانشگاه ملایر، ملایر، ایران احمد ارشادی دانشیار گروه علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه بوعلی سینا، همدان، ایران محمود اثنی عشری استاد گروه علوم باغبانی، دانشکدۀ کشاورزی، دانشگاه بوعلی سینا، همدان، ایران مسعود مشهدی اکبر بوجار دانشیار گروه بیوشیمی، دانشکدۀ علوم، دانشگاه خوارزمی، تهران، ایران

screening of native cultivars and understanding of the mechanisms involved in cold hardiness in grapevines is needed to match cultivars appropriately with growing sites and aid in breeding and selecting cultivars with improved freezing tolerance. in this study cold hardiness of fifteen grapevine (vitis vinifera l.) cultivars were evaluated using tetrazolium stain test and post freezing budbreak...

Journal: :Journal of applied physiology 1997
T Kizaki T Ookawara T Izawa J Nagasawa S Haga Z Radák H Ohno

Acute cold stress induces suppressor macrophages expressing large numbers of receptors to the crystallizable fragment (Fc) portion of immunoglobulin G (MAC-1+ FcgammaRII/IIIbright cells), resulting in the immunosuppression of splenocyte mitogenesis. The generation of MAC-1+ FcgammaRII/IIIbright cells is mediated by the action of glucocorticoids (GCs) through the GC-receptor. In the present stud...

Journal: :Acta dermato-venereologica 2013
Hee Jung Park So-Young Park Seo Hyun Lee Ga Hee Kim Jee Eun Yang Sun Young Yoon Su-Jeong Kim Hyouk-Soo Kwon You Sook Cho Hee-Bom Moon Tae-Bum Kim

Cold urticaria develops in response to exposure to cold stimuli, such as cold air, water or objects. Symptoms may vary from localized wheals to systemic reactions, sometimes leading to life-threatening conditions. Physicians need to be cautious when they administer cold fluid intravenously to patients who develop urticaria as a result of exposure to cold. We report here a patient in whom cold u...

2009
Hitoshi Wakabayashi Hideto Kuroki Titis Wijayanto Joo-Young Lee Yutaka Tochihara

Previous studies have reported about the changes in thermoregulatory responses due to cold adaptation, and several types of cold adaptation (insulative, metabolic and hypothermic adaptation) have been described (Bittel, 1987; Tipton et al., 2008). The differences in cold exposure and physical characteristics have been considered as the factors affecting different types of adaptation. However it...

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