Sandstone from the Longshan Grottoes in Taiyuan, China, was research object of this paper. The sandstone samples were soaked distilled water, Na2SO4 solution, and NaCl solution subjected to freeze–thaw testing. specimens treated with 0, 5, 10, 15, 20, 25, 30 cycles. mass ratio, P-wave velocity, surface hardness, uniaxial compressive strength, other physical-mechanical features rock measured aft...

The use of superabsorbent polymers (SAPs) to produce internally cured concrete has been shown to be effective in reducing the potential for restrained shrinkage cracking of high performance concrete mixtures. However, not much is known regarding the freeze–thaw durability of concrete mixtures that incorporate SAPs for internal curing (IC). When SAP particles desorb (or partially desorb) the “wa...

An experimental study on the resistance of concrete containing air-cooled slag (AS) and water-cooled (WS) against freeze–thaw cycles was conducted. For comparison, durability ASTM Type I ordinary Portland cement (OPC) exposed to same environment examined. To evaluate environment, an experiment conducted according C 666 procedure A. Furthermore, relative dynamic modulus elasticity, surface elect...

Cold is a central feature of environments at higher latitudes and elevations. Thus, cold-induced taphonomic changes are relevant in many forensic contexts. Fifty-two lamb bone segments were used to assess the impact of cold, freeze-thaw cycles, freeze-drying, and water immersion on microstructural cracking of bone in a series of controlled exposure experiments. For each bone segment, three thin...

Background: Artificial insemination (AI) has been used for increasing genetic potential of animals in production while application of AI has been restricted in buffalo due to low freezing ability and fertility of frozen-thawed buffalo spermatozoa. So improvement in buffalo sperm cryopreservation may enhance the breeding programs of this valuable farm animal. Semen processing is one of the major...

Results: The experiment results indicate that the type of recycled aggregate and its replacement ratio have significant effects on the freezethaw performance. The cubic compressive strength of recycled aggregate concrete is overall slightly lower than that of normal concrete. After 100 freeze-thaw cycles, the compressive strength decreases and the reduction extent increases with increasing repl...

Introduction Since its first human application in 1998, transcatheter cryoablation has emerged as a viable alternative to radiofrequency ablation. Its enhanced safety profile, including an obligatory phase of reversible tissue inhibition prior to permanent cellular damage, has rendered cryoablation an attractive treatment option for perinodal and peri-Hissian substrates. Several factors may inf...

This paper recapitulates certain studies of cycles of freezing and thawing in the ground sponsored by the US Corps of Engineers and begun over 45 years ago by the writer and H.P. Aldrich, Jr. Because the latent heat of the soil moisture renders such problems nonlinear, these two MIT professors, together with R.F. Scott and other students, pioneered the use of digital and analog computers for su...

We investigated the use of a catheter-based cryoablation system on atrioventricular (AV) junction ablation in dogs. In five dogs, the cryoablation catheter was introduced to the AV junction area in order to create transient high degree or complete AV block. Cryo-freezing energy was applied by lowering the temperature to -75 degrees C for five minutes as a single cycle. This cycle was repeated u...

The present study was aimed to examine the association of bovine follicular stimulating hormone gene polymorphism with sperm quality traits including sperm volume (SV), sperm concentration (SPCO), total sperm (TS), fresh sperm motility (FSM), total fresh motile sperm (TFMS), post thaw sperm motility (PTSM), total post thaw motile sperm (TPTMS), number of produced payout (NPP), number of fresh m...