نتایج جستجو برای: rejuvenation heat treatment
تعداد نتایج: 1576248 فیلتر نتایج به سال:
Structural relaxation can be induced by annealing and usually leads to embrittlement in metallic glasses (MGs). Here, we show that a relaxed MG obtained an as-cast at temperature (annealing temperature, Ta) below its fictive suitably rejuvenated thermal treatment of the higher than Ta. The effect is driven enthalpy relaxation, endothermic reaction upon heating MG. This rejuvenation lifts energy...
Most computer users know that one of the most effective ways to recover from faults such as system crashes and performance degradation is simply to reset or reboot a computer. Although these methods might be expensive in terms of downtime, they are frequently most effective. Since commercial users in most cases cannot afford the restart, they tend to use periodic rejuvenation, which is restarti...
Software rejuvenation is a preventive and proactive maintenance policy that is particularly useful for counteracting the phenomenon of software aging. In this study we consider an operational software system with multiple degradations and derive the optimal software rejuvenation policy minimizing the expected operation cost per unit time in the steady state, via the dynamic programming approach...
Software fault-tolerance techniques have been widely used in computing systems to achieve high level of quality. Rejuvenation, a modern software fault-tolerance technique, has attracted a large number of researchers in software engineering area. Evaluating the effectiveness and feasibility of this technique becomes extremely important in selecting, comparing and applying it in actual software s...
Analysis of the Relationships between Waste Cooking Oil Qualities and Rejuvenated Asphalt Properties
Waste cooking oil (WCO), in many cases, can rejuvenate aged asphalt and restore its properties. However, the influence of WCO qualities on rejuvenation behaviors of aged asphalt has not been investigated in detail. The objective of this paper was to evaluate the effects of WCO viscosity and acid value on the basic, rheological, and chemical properties of a typical rejuvenated asphalt. Penetrati...
BACKGROUND Patient satisfaction and improved quality of life are the predominant considerations determining success in cosmetic surgery. However, few studies have examined patients' perceptions of their appearance following cosmetic facial surgery and/or nonsurgical facial rejuvenation. This study identified patient-reported outcome measures developed and validated for use in patients undergoin...
treatment of human promonocytic leukemic cell line u937 with mild hyperthermia in the temperature range of 40-43°c resulted in differentiation of these cells into monocyte/macrophage-like cells in a heat dose and time dependent manner. this process was accompanied by marked morphological, functional and proliferational changes. u937 cells which normally grow in supension in the logarithmic phas...
Testosterone is regarded as an attractive supplement for obtaining masculinity and sexuality; however, there have been pros and cons regarding its application as a treatment. In addition, there is also conventional repulsion on adoption of testosterone to any kind of exercise to anyone with concern with sports. However, we should keep in mind that in terms of rehabilitation, our main concern is...
BACKGROUND Autologous platelet-rich plasma has attracted attention in various medical fields recently, including orthopedic, plastic, and dental surgeries and dermatology for its wound healing ability. Further, it has been used clinically in mesotherapy for skin rejuvenation. OBJECTIVE In this study, the effects of activated platelet-rich plasma (aPRP) and activated platelet-poor plasma (aPPP...
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