The mechanical deterioration of soft rocks under freeze–thaw cycles is caused by the accumulation mesoscopic damage. However, current model for does not adequately consider multiscale correlations, which makes strength calculation results differ greatly from test and cannot fully reveal damage mechanism cycling conditions. In this paper, bond pore ice expansion laws are considered soft-rock uni...

This study conducted ten freeze-thaw cyclic tests to clarify the effect of cycles on forces acting buried oil pipeline. The stress evolution in Q345 steel pipeline versus number was obtained. test results were consistent with COMSOL simulation different moisture contents bottom stress. Besides proposed XGBoost model, eleven machine-learning prediction models also applied 10–20 cycling tests. sh...

The freezing-thawing effect on the meat quality of whole, gutted and fillets of sea bass (Dicentrarchus labrax) were investigated. It was aimed to investigate the changes in the meat quality of whole, gutted and fillets of sea bass in multiple frozen (-18±2ºC) and thawed cycles in refrigerated conditions (4±2°C). The meat quality assessment of the sea bass groups (whole, gutted and fillets) sub...

The objectives of this study were to investigate the effects of testis-epididymis cool storage on viability and progressive motility of buffalo epididymal sperm (EP) and to compare the influences of two basic semen extenders on post thaw EP viability and progressive motility. Abattoir collected buffalo testicles were allotted to three storage times (0 h: n = 10; 24 h: n = 10 and 48 h: n = 12). ...

BACKGROUND Paraoxonase (PON1) enzymatic activity assays are used to characterize sensitivity to organophosphates and oxidative stress. Length of sample storage, temperature and other factors may influence variability of PON1 measurements, especially in longitudinal studies. METHODS Effects of assay temperature, storage duration up to 7 y (-80 degrees C), freeze-thaw cycles, the type of specim...

The functional properties of alkali soluble chicken meat protein/starch blend were studied in three phases. In the first phase chicken breast meat powder was solubilized with alkali in a 2  2 factorial experiment. The results from microscopic appearance, microscopy, SEM, consistency, solubility, X-ray diffractometry, SDS-Page showed changes in microstructural, textural and molecular weight of ...

BACKGROUND Circulating microRNAs are potential markers for disease detection. A novel class of small non-coding RNAs called Piwi-interacting RNAs (piRNAs) has been recently reported to participate in the epigenetic regulation of cancers and other diseases. This study aims to discover blood-based piRNAs which can be used as markers for disease detection and monitoring. MATERIALS AND METHODS We...

BACKGROUND In the present study, different methods for preparation of platelet-rich plasma (PRP) are investigated in order to standardize the component in terms of growth factor content. The effects of concentration technique and storage duration are also analyzed. METHODS PRP was collected from 40 donors by plateletpheresis as well as by the buffy coat and tube method. Concentration of growt...