Results 261 to 270 of about 638,879 (312)

Biologically-oriented Alveolar Ridge Preservation

Minerva Dental and Oral Science, 2023
A recent systematic review failed to identify one approach for alveolar ridge preservation with superior outcomes. The present case series aimed to evaluate the dimensional changes of sites undergoing Biologically-oriented Alveolar Ridge Preservation (BARP).The sockets were filled with a collagen sponge up to 4-5 mm from the most coronal extensions of ...
Pramstraller, Mattia, Simonelli, Anna, Farina, Roberto, Trombelli, Leonardo   +3 more
openaire   +3 more sources

Preservation of biological materials under desiccation

Critical Reviews in Food Science and Nutrition, 1997
A number of life forms, including seeds, certain nematodes, bacterial and fungal spores, and cysts of certain crustaceans, show an ability to survive desiccation. The present article reviews the literature available on this subject and critically evaluates the evidence for various mechanisms that may be responsible for these phenomena.
J M, Aguilera, M, Karel
openaire   +2 more sources

Debating the biological reality of modelling preservation

International Journal of Food Microbiology, 2002
Predictive food microbiology is a rapidly developing science and has made great advances. The aim is to debate a number of issues in modelling preservation: (1) inoculum and prehistory effects on lag times and process susceptibility; (2) mechanistic vs. empirical modelling; and (3) concluding remarks (the Species concept, methodology and biovariability)
Steeg P F, ter, J E, Ueckert
openaire   +2 more sources

Protein stability in preserved biological remains

International Journal of Biochemistry, 1971
Abstract 1. 1. A sample of whole human blood that had been stored in the dried state for 8 years at room temperature was tested for the presence of eleven specific globular proteins. 2. 2. Eight of them survived, as judged by the criteria of enzymatic activity and reactivity with specific antiscra. 3. 3.
G.F. Sensabaugh, A.C. Wilson, the late P.L. Kirk   +2 more
openaire   +1 more source

Interstellar Medium Has Biological Preservative

Physics Today, 1969
Interstellar formaldehyde (H2CO) has been discovered by a group working with the 140-foot radio telescope at Green Bank, W. Va. They observed the molecule in absorption against many galactic and extragalactic sources. The discovery suggests that all the known ingredients for development of life are present in interstellar space.
openaire   +1 more source

Ultracryotomy of biological tissues to preserve membrane structure

Journal of Cell Science, 1976
ABSTRACT A vacuum transfer stage is described which permits visualization of ultracryotome sections without the considerable distortions found in sections which have either thawed or rehydrated after freeze drying. Membrane structure - nucleus, nucleolus, mitochondria with their cristae and plasma membrane - was observed only in cells at
S, Hodson, L, Williams
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BIOLOGICAL COMPETITION AS A PRESERVING MECHANISM

Journal of Food Safety, 1989
ABSTRACTBiological competition is one “barrier'’against pathogenic growth which has been recommended for use in refrigerated foods. Historically used in fermented foods, lactic acid bacteria alter foods to preclude growth of pathogens. The primary mechanism of inhibition is pH reduction, although other contributing factors have been described.
openaire   +1 more source

25. Dry preservation of biological therapeutics

Cryobiology, 2013
The fields of tissue engineering, cellular therapeutics, and transfusion medicine have matured considerably over the past decade, thus accelerating the need for cost-effective preservation methods to enable the ready supply of biological therapeutics. The current state of the art for preserving biological samples is by cryopreservation, either by slow ...
openaire   +1 more source

Physical Preservation Methods for Biological Material

Proceedings, annual meeting, Electron Microscopy Society of America, 1972
This review will be limited to physical preservation methods involving freezing, and will include discussion of freeze-drying, freeze-substitution, ultracryomicrotomy and freezeetching. Pre-treatment and freezing steps can be considered as common to all techniques.The most common pre-treatment is soaking in a cold 20% glycerol solution to provide ...
openaire   +1 more source

A Biologic Solution: Preserving the Posterior Cruciate Ligament

Orthopedics, 2002
Achieving Posterior Stability in Knee ...
openaire   +2 more sources