منابع مشابه
Hot & Cold Working
Q.1. What is hot working ? State its principles, advantages and disadvantages. Ans. Mechanical working of metals above its recrystallisation temperature is known as hot working. Advantages : 1. Larger deformation can be accomplished and more rapidly by hot working since the metal is in plastic state. 2. Porosity of the metal is considerably minimised. 3. Concentrated impurities, if any in the m...
متن کاملCold acid elution (ELU Kit II).
Elution is a procedure for recovery of antibody attached to intact,immunoglobulin-coated red blood cells (RBCs) by disrupting the antigen-antibody bonds. The recovered antibody is collected in an inert diluent and is referred to as an eluate. Testing of an eluate may be desired to identify antibody(ies) coating the RBCs of patients with a positive direct antiglobulin test. Many types of elution...
متن کاملA model for tracking temperature variation in cold and hot metal working conditions during machining operations
This paper presents a mathematical model that could assist in measuring, monitoring and controlling tem-perature variation in cold and ‘red-hot’ metal working conditions of machining. A numerical analysis tech-nique of the temperature distribution, based on the theory of complex applied potential, was carried out using the principles of relationship analysis between the paths of heat supply in ...
متن کاملWorking Memory Capacity in Hot and Cold Cognition
Much has been said about the relationship between measures of Work ing Memory Capacity (WMC) and higher order cognition. Indeed, what exactly accounts for this relationship has been a major topic of inquiry in cognitive psychology for over 20 years (Engle & Oransky, 1999). Attempts to better understand this problem have shed considerable light on the role of WMC in a wide array of research dom...
متن کاملTyrosine reverses a cold-induced working memory deficit in humans.
Acute exposure to cold stress has been shown to impair short-term, or working, memory, which may be related to reduction in, or disruption of, sustained release of brain catecholamines. Administering a supplemental dose of the catecholamine precursor tyrosine may alleviate cold stress-induced memory impairments by preventing cold-induced deficits in brain catecholamine levels. The present exper...
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ژورنال
عنوان ژورنال: Tetsu-to-Hagane
سال: 1959
ISSN: 0021-1575,1883-2954
DOI: 10.2355/tetsutohagane1955.45.5_557