Freezing processes

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  • Freezing is one of the oldest and most widely used methods of food preservation, which allows preservation of taste, texture, and nutritional value in foods better than any other method. The freezing process is a combination of the beneficial effects of low temperatures at which microorganisms cannot grow, chemical reaction are reduced and cellular metabolic reacions are delayed.

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  • Freezing is one of the oldest and most commonly used means of food preservation. It has been known to be an extremely effective means of preserving food for extended periods since Paleolithic and Neolithic times, when man used ice and snow to cool food. The cooling effect of salt and ice was first publicly discussed in 1662 by the chemist Robert Boyle, but this technology was certainly known in Spain, Italy and India in the sixteenth century.

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  • A large majority of adolescents (both married and unmarried) do not have information on sexuality, contraception, or STIs and HIV/AIDS (Barkat et al. 2000; Nahar et al. 1999; Haider et al. 1997). Nevertheless, RH education has not been a part of the education curriculum, and the existing service delivery system is not catering to the needs of unmarried adolescents. The family structure in Bangladesh is still very strong and plays a major role in the lives of adolescents providing support, love and care, but fails to respond to the need for reproductive health of adolescents.

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  • Oracle Connection Manager is a software component that resides on its own computer, separate from a client or an Oracle database server. It proxies and screens requests for the database server. In addition, it multiplexes database sessions. In its session multiplexing role, Oracle Connection Manager funnels multiple sessions through a single transport protocol connection to a particular destination.

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  • Combustion units (process furnaces, steam boilers and gas turbines) give rise to emissions of carbon dioxide, nitrogen oxides, sulphur dioxide and particulates. Nitrogen oxide emissions are most commonly reduced by combustion modifications that reduce temperatures and hence the formation of thermal NOx. The techniques include low NOx burners, flue gas recirculation, and reduced pre-heat. Nitrogen oxides can also be removed after they have formed by reduction to nitrogen using Selective Non Catalytic Reduction (SNCR) or Selective Catalytic Reduction (SCR). Water pollutant control.

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  • There are some differences between military and civilian protection orders. Military protection orders are enforceable only on the base where they are issued. These orders do not meet the due process requirements for full faith and credit because the abuser is not given notice and the opportunity to be heard. Since military protection orders cannot be enforced off the installation, you may want to consider also getting a civil protection order in a judicial district near the military installation.

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  • Since the collapse of central government in 1991 and the resulting civil war, there have been many efforts to restore a central government in Somalia without sustained success. In 1991, the North west zone (NWZ) declared the independent state of Somaliland, with its governing administration in the capital Hargesia. The North east Zone (NEZ) declared itself as the autonomous region of Puntland in 1998. Although governed by its administration in its capital Garowe, it pledges to participate in any Somali reconciliation and reconstruction process that should occur.

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  • Given the low welfare of nonsophisticated borrowers in the unrestricted market, we turn to identifying welfare-improving interventions. Because in a restricted market borrowers have the option of paying a small fee for deferring a small amount of repayment, nonsophisticated but nottoo- naïve borrowers do not drastically mispredict their future behavior, and hence have higher utility than in the unrestricted market. Since sophisticated borrowers achieve the highest possible utility in both markets, this means that a restricted market often Pareto dominates the unrestricted one.

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  • This paper discusses a sequence of deductive parsers, called PAD1 - PAD5, that utilize an a x i o m a t i z a t i o n of the p r i n c i p l e s a n d parameters of GB theory, including a restricted transformational component (Move-a). PAD2 uses an inference control strategy based on the "freeze" predicate of Prolog-II, while PAD3 - 5 utilize the Unfold-Fold transformation to transform the original axiomatization into a form that functions as a recursive descent Prolog parser for the fragment. INTRODUCTION In this paper I...

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  • Food engineering is usually a difficult discipline for food science students because they are more used to qualitative rather than to quantitative descriptions of food processing operations. Food engineering requires understanding of the basic principles of fluid flow, heat transfer, and mass transfer phenomena and application of these principles to unit operations which are frequently used in food processing, e.g., evaporation, drying, thermal processing, cooling and freezing, etc. The most difficult part of a course in food engineering is often considered the solution of problems.

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  • The chilling and freezing of meat remains an essential way of extending shelf-life and maintaining quality. Based on the work of the internationally-renowned Food Refrigeration and Process Engineering Research Centre (FRPERC) at the University of Bristol, UK, this book provides an authoritative guide both to the impact of refrigeration on meat and best practices in using it to maximize meat quality for the consumer.

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  • Two major approaches to cryopreservation are known, i.e., conventional freeze-thaw procedures and vitrification, which is defined as a glass-like solidification (Karlsson & Toner, 1996). While freeze-thaw procedures minimize the probability of intracellular ice formation, vitrification attempts to prevent ice formation throughout the entire sample during the cooling and warming process (Kuleshova et al., 2007). Recently, the potential of vitrification has been tested for tissue-engineered constructs.

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  • Although it has been shown that frozen storage is feasible for some of the tissue-engineered products such as bone (Kofron et al., 2003), it is more difficult than that for isolated cells and requires special considerations. Water transport processes may cause difficulties for tissue-scale freezing. While cells at the surface layer would respond to freeze-induced osmotic changes much like cells in suspension, interior cells would dehydrate as a response to the increased intracellular tonicity in the dehydrate surface layers.

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  • There are other bizarre and unkind ramifications. For example, the transport of POPs depends on temperature; in a process known as the "grasshopper effect", these chemicals jump around the globe, evaporating in warm places, riding the wind and particles of dust, settling to Earth in cool spots, and then vaporizing and moving on again. As the POPs move away from the equator they encounter cooler climates with less evaporation. The result is a general drift of these pollutants toward the Poles and mountain areas.

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  • Care should be taken in choosing preservatives. For example, Method 5035 notes that, “Soil samples that contain carbonate minerals (either from natural sources or applied as an amendment) may effervesce upon contact with the acidic preservative solution in the low concentration sample vial.” Therefore, calcareous soils that effervesce on contact with the preservative solution, which is intended for low-level samples, should be preserved using an alternative technique.

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  • The American Society for Reproductive Medicine (ASRM) recommends that egg donors go through no more than six cycles, but there is no legal limitation and no tracking of egg donors who go from one clinic or broker to another. Sperm donors at the California Sperm Bank are asked to commit for at least a year and donate at least once a week. Cryopreservation is the process of slowly freezing bodily materials so that they can be used at a future date. In ART, this typically involves sperm or embryos, both of which can be successfully frozen. Egg cryopreservation, on...

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