Polyacrylonitrile (PAN) gel was prepared by the freezing and thawing method using the solvents of N,N-dimethylacetamide (DMA) and tetramethylene sulfone(sulfolane). The gelation time after a series of freezing and thawing was examined with varying PAN concentration of DMA solution and the freezing time. Dynamic viscoelasticity was measured in the course of gelation for DMA solution to observe t...

Colon bacilli, Virus III, vaccine virus, herpes virus, bacteriophage, complement, and trypsin are either killed or inactivated by repeated freezing (-185 degrees C.) and thawing. As might be expected, some of the agents are more resistant than others. Hence it may be concluded that destruction or inactivation of an active agent by repeated freezing (-185 degrees C.) and thawing is not proof tha...

Objective: This study aimed to determine phenotypic correlations between carcass part yields (breast and thigh yield) meat quality characteristics (pHu, lightness, redness, yellowness, chroma, hue, thawing loss, cooking water holding capacity, texture) in Japanese quails.Material Methods: was carried out on a total of 130 quails with mixed sexes. Twenty-four hours after slaughter, pHu color mea...

Climate warming in high-latitude regions is thawing carbon-rich permafrost soils, which can release carbon to the atmosphere and enhance climate warming. Using a coupled model of long-term peatland dynamics (Holocene Peat Model, HPM-Arctic), we quantify potential loss with future for six sites differing climates histories Northwestern Canada. We compared net balance at 2100 CE resulting from ne...

This study aims at providing new insight on protein denaturation in freezing-thawing. Freezing-thawing minced pork reduced water-holding of myofibrils and increased surface hydrophobicity. One additional freezing-thawing cycle slow freezing rate caused appearance a 160 kDa myosin-4 fragment SDS-PAGE, further decreased Fresh was exposed to either high salt (2 M KCl) only or with lower pH mimic c...

The monitoring of soil freezing and thawing states over large areas is very challenging on ground. In order to investigate the potential and the limitations of space-borne SAR polarimetry at C-band for soil state survey, analyses were conducted on an entire winter time series of fully polarimetric RADARSAT-2 data from 2011/2012 to identify freezing as well as thawing states within the soil. The...

OBJECTIVES The stability of circulating proteins can be affected by repeated freezing and thawing. The aim of our study was to identify the effect of repeated freezing and thawing on the plasma and serum concentrations of eight proteins [interferon-γ, interleukin (IL)-8, IL-15, IL-17A, matrix metalloproteinase (MMP)-7, tumor necrosis factor-α, vascular endothelial growth factor (VEGF), and VEGF...

This work was initiated to study the concentration effects on phenanthrene and pyrene extraction during process of aging in phaeozem and burozem with or without freeze-thawing cycles. 1, 10, and 100 μg g(-1) phenanthrene and pyrene contaminated soils were extracted by 10,000 mg L(-1) surfactant SDBS at various times. The extraction amount decreased with increasing contact time. Aging process co...

The present study was undertaken to examine the viability, motility and morphology of spermatozoa that were frozen-thawed at different temperature followed by the storage at 4oC until 10 hours under the condition of tropical area. The frozen semen derived from a Holstein-Friesian bull with the egg-yolkbase extender was thawed at 23oC or 37oC for 30 seconds or 15 seconds, respectively, and kept ...