نتایج جستجو برای: load cycle
تعداد نتایج: 417102 فیلتر نتایج به سال:
This study assessed the damage area ratios of different packaging systems on life cycle strawberry caused by vibration during transportation from environmental perspective. The relationship between food loss reduction and loads was evaluated to produce an ideal package with both lower losses impacts. Life cultivation waste using a mass-based functional unit. demonstrated that minimum point for ...
Triboelectric Nanogenerator (TENG) is a class of ambient mechanical energy harvesters used to augment the battery life electronic devices such as sensors in implantables, wearables, and Internet Things (IoT) applications. In this work, fundamentals pre-biasing (pre-charging) TENG at start operation cycle enhance per-cycle extracted presented. The gain mathematically formulated, optimum voltage ...
Often fatigue tests of materials are performed with constant amplitude loads. When dealing with variable amplitude loads, like random loads, one forms equivalent load cycles. The now commonly used cycle counting method is rainflow counting which was introduced by Endo in 1968. The equivalent definition of rainflow cycles as illustrated in Figure 1 is due to Rychlik [5]. The fatigue life of a co...
A conformation space kinetic model is constructed to drive the deformation cycle of a three-sphere swimmer to achieve propulsion at low Reynolds number. We analyze the effect of an external load on the performance of this kinetic swimmer and show that it depends sensitively on where the force is exerted, so that there is no general force-velocity relation. We discuss how the conformational cycl...
PURPOSE Although a global picture exists of teachers' voice demands in general, few studies have compared specific groups of teachers to determine whether some are more at risk than others. This study compared the vocal loadings of kindergarten and elementary school teachers; professional and nonprofessional vocal load were determined for both groups. METHOD Twelve kindergarten and 20 elementar...
The Short-term forecasting of electric load plays an important role in designing and operation of power systems. Due to the nature of the short-term electric load time series (nonlinear, non-constant, and non-seasonal), accurate prediction of the load is very challenging. In this article, a method for short-term daily and hourly load forecasting is proposed. In this method, in the first step, t...
Load instructions occasionally incur very long latencies that can significantly affect system performance. Load value prediction alleviates this problem by allowing the CPU to speculatively continue processing without having to wait for the slow memory access to complete. Current load value predictors can only correctly predict about forty to seventy percent of the fetched load values. To avoid...
If the nominal contact tractions at an interface are everywhere below the Coulomb friction limit throughout a cycle of oscillatory loading, the introduction of surface roughness will generally cause local microslip between the contacting asperities and hence some frictional dissipation. This dissipation is important both as a source of structural damping and as an indicator of potential frettin...
Stable molecular changes during cell division without any change in the sequence of DNA molecules is known as epigenetic. Molecular mechanisms involved in this process, including histone modifications, methylation of DNA, protein complex and RNA antisense. Cancer genome changes happen through a combination of DNA hypermethylation, long-term epigenetic silencing with heterozygosis loss and genom...
The fetal heart is highly sensitive to changes in mechanical load. We have previously demonstrated that increased cardiac load can stimulate cell cycle activity and maturation of immature cardiomyocytes, but the effects of reduced load are not known. Sixteen fetal sheep were given either continuous intravenous infusion of lactated Ringer solution (LR) or enalaprilat, an angiotensin-converting e...
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