Preload
Preload may refer to: Science and technology * Preload (cardiology), maximum stretch of the heart at the end of diastole * preload (software), code-prefetching software for Linux * Preload (engineering), the internal application of stress to certain mechanical systems Other uses * Pre-loading, drinking alcohol at home before going to public places to drink See also * Load (other) {{disambiguation ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Preload (cardiology)
In cardiac physiology, preload is the amount of sarcomere stretch experienced by cardiac muscle cells, called cardiomyocytes, at the end of ventricular filling during diastole. Preload is directly related to ventricular filling. As the relaxed ventricle fills during diastole, the walls are stretched and the length of sarcomeres increases. Sarcomere length can be approximated by the volume of the ventricle because each shape has a conserved surface-area-to-volume ratio. This is useful clinically because measuring the sarcomere length is destructive to heart tissue. It requires cutting out a piece of cardiac muscle to look at the sarcomeres under a microscope. It is currently not possible to directly measure preload in the beating heart of a living animal. Preload is estimated from end-diastolic ventricular pressure and is measured in millimeters of mercury (mmHg). Estimating preload Though not exactly equivalent to the strict definition of ''preload,'' end-diastolic volume is ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Preload (engineering)
Preload is an engineering term with several meanings. In the general sense, it refers to the internal application of stress to certain mechanical systems. Fastener preload ' The most common usage is to describe the load applied to a fastener as a result of its being installed, i.e., before any external loads are applied (e.g., tightening the nut on a bolt). Preload in such cases is important for several reasons. First, a tightened bolt experiences only a small fraction of any external load that will be applied later, so that a fully tightened bolt can (depending on the exact application) sustain a much greater load than a loosely tightened bolt. Second, a nut that is correctly tightened will resist becoming loose under the influence of vibration, temperature cycling, etc. Bearing preload Internal stress to a bearing through application of negative clearance is known as bearing preloading. Advantages of preloading include the following: maintain axial and radial position for a ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Preload
Preload may refer to: Science and technology * Preload (cardiology), maximum stretch of the heart at the end of diastole * preload (software), code-prefetching software for Linux * Preload (engineering), the internal application of stress to certain mechanical systems Other uses * Pre-loading, drinking alcohol at home before going to public places to drink See also * Load (other) {{disambiguation ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Preload (software)
preload is a free Linux program which runs as a daemon to record statistics about usage of files by more frequently-used programs. This information is then used to keep these files preloaded into memory.Preload — An Adaptive Prefetching Daemon , 2006. This results in faster application startup times as less data needs to be fetched from disk. preload is often paired with . preload was written by [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |
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Pre-loading
Pregaming (also known as pre-drinking or pre-loading) is the process of getting drunk prior to going out socializing, typically done by college students and young adults in a manner as cost-efficient as possible, with hard liquor and cheap beer consumed while in group. Although pregaming is typically done before a night out, it can also precede other activities, like attending a college football game, large party, social function, or another activity where possession of alcohol may be limited or prohibited. The name "pregaming" spread from the drinking that took place during tailgating before football games to encompass similar drinking periods. Other terms for the practice are pre-partying, prinking, prefunking and pres. Background Origins Pregaming first became popular in the United States in the 1990s, becoming a common practice after Mothers Against Drunk Driving pressured the federal government to coerce states into increasing the legal drinking age in the United States t ... [...More Info...]       [...Related Items...]     OR:     [Wikipedia]   [Google]   [Baidu]   |