Results 211 to 220 of about 331,710 (264)
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Proceedings of the Royal Society of London. Series B. Biological Sciences, 1975
Abstract Most biological substances are unstable during storage owing to their high water content. This is why numerous attempts have been made over the last 100 years to prevent, by low temperature freezing, metabolic and biochemical degradations.
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Abstract Most biological substances are unstable during storage owing to their high water content. This is why numerous attempts have been made over the last 100 years to prevent, by low temperature freezing, metabolic and biochemical degradations.
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Science, 1987
There is no first principles theory of freezing or melting, even for the simplest materials. The prediction of phase diagrams is an important first step in understanding the crystal-melt interface, crystallization near equilibrium, and nucleation. Recently, a new approximate theory for the freezing of classical liquids, known as the density functional ...
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There is no first principles theory of freezing or melting, even for the simplest materials. The prediction of phase diagrams is an important first step in understanding the crystal-melt interface, crystallization near equilibrium, and nucleation. Recently, a new approximate theory for the freezing of classical liquids, known as the density functional ...
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Freeze Fracture and Freeze Etching
2013Freeze fracture depends on the property of frozen tissues or cells, when cracked open, to split along the hydrophobic interior of membranes, thus revealing broad panoramas of membrane interior. These large panoramas reveal the three-dimensional contours of membranes making the methods well suited to studying changes in membrane architecture.
Douglas E, Chandler, William P, Sharp
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Archives of Otolaryngology - Head and Neck Surgery, 1983
Correct identification of a parotid mass is often a substantial challenge to the skills and acumen of the clinician. Sometimes, even recognition of the mass is difficult when it is deeply located. One must decide if the mass arises from the parotid parenchyma or periparotid lymph nodes.
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Correct identification of a parotid mass is often a substantial challenge to the skills and acumen of the clinician. Sometimes, even recognition of the mass is difficult when it is deeply located. One must decide if the mass arises from the parotid parenchyma or periparotid lymph nodes.
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On swap rate dynamics: to freeze or not to freeze?
International Journal of Computer Mathematics, 2015We explore the implications of a common market and academic practice which is known as ‘freezing the drift’ when dealing with swap interest rate dynamics. In mathematical terms this can be better understood as imposing a low variance martingale (LVM) assumption.
R. M. Gaspar, Rita Pimentel
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Freezing and freeze-drying of microorganisms
Cryobiology, 1964Some papers reporting the effects of intense cold on microorganisms had already appeared in the 19th century and since then there have been a great many investigations of the freezing of microorganisms.3* 53 ‘I, 12 These experiments demonstrate that a wide variety of microorganisms can survive cooling to and storage at very low temperatures.
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Freeze-Substitution and Freeze-Drying
1987Freeze-substitution (FS) and freeze-drying (FD) are dehydration techniques by which the water is gently removed from a frozen specimen. Both techniques can serve as a link between cryofixation and conventional thin sectioning at room temperature (Fig. 1).
Steinbrecht, R., Müller, M.
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2016
Freezing of biological materials is commonly carried out to delay biochemical and chemical changes resulting in loss of activity. However, the physicochemical background of freezing is not well understood. Freeze-drying is generally aimed at preserving biological materials and bioactive components for long periods of time without the need for frozen ...
Yrjö H. Roos +2 more
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Freezing of biological materials is commonly carried out to delay biochemical and chemical changes resulting in loss of activity. However, the physicochemical background of freezing is not well understood. Freeze-drying is generally aimed at preserving biological materials and bioactive components for long periods of time without the need for frozen ...
Yrjö H. Roos +2 more
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2012
Fil: Martino, Miriam Nora. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Criotecnología de Alimentos.
Ramallo, Laura Ana +2 more
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Fil: Martino, Miriam Nora. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Criotecnología de Alimentos.
Ramallo, Laura Ana +2 more
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Freezing and Freeze-Drying of Bull Spermatozoa
American Journal of Physiology-Legacy Content, 1957The possible dependance of survival upon the time spermatozoa are in contact with the protective substance glycerol, prior to exposure to low temperatures, was investigated. Pretreatment for 5 minutes provided at least as much protection as 18 hours.
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