High-performance liquid chromatography (HPLC), formerly referred to as high-pressure liquid chromatography, is a technique in analytical chemistry used to separate, identify, and quantify each component in a mixture. It relies on pumps to pass a pressurized liquid solvent containing the sample mixture through a column filled with a solid adsorbent material. Each component in the sample interacts slightly differently with the adsorbent material, causing different flow rates for the different components and leading to the separation of the components as they flow out of the column. HPLC has been used for manufacturing (e.g., during the production process of pharmaceutical and biological products), legal (e.g., detecting performance enhancement drugs in urine), research (e.g., separating the components of a complex biological sample, or of similar synthetic chemicals from each other), and medical (e.g., detecting vitamin D levels in blood serum) purposes.Chromatography can be described as a mass transfer process involving adsorption. HPLC relies on pumps to pass a pressurized liquid and a sample mixture through a column...

The pilot of a high-performance single-engine plane that crashed at Coulter Field in Bryan last week had purchased the plane about a week before the accident, according to a preliminary

Learn more about Supercomputing, a form of high-performance computing that determines or calculates using a powerful computer, a supercomputer.

Avant is the French word for 'fore' and 'ahead of'. Avant can refer to: People Avant, part of music production team Bloodshy & Avant Avant (singer), Myron Avant, an American singer Clarence Avant, a music executive Jason Avant, is a US American football playerPlaces Avant, Oklahoma, United States The Avant, a high-rise in Buffalo, New York, United StatesTechnology Computing Avant Browser Avant Window Navigator, computer software Avanti Corporation, whose name is often written “Avant!”Transport Avant (train), a medium distance high speed rail service in Spain Avant (airline), a former airline that operated flights within Chile in the late 1990s Audi Avant, a station wagon Audi RS2 Avant, a high performance estate car Citroën Traction Avant, a 1930s saloon carMusic Avant-pop...

A computer cluster is a set of computers that work together so that they can be viewed as a single system. Unlike grid computers, computer clusters have each node set to perform the same task, controlled and scheduled by software. The components of a cluster are usually connected to each other through fast local area networks, with each node (computer used as a server) running its own instance of an operating system. In most circumstances, all of the nodes use the same hardware and the same operating system, although in some setups (e.g. using Open Source Cluster Application Resources (OSCAR)), different operating systems can be used on each computer, or different hardware.Clusters are usually deployed to improve performance and availability over that of a single computer, while typically being much more cost-effective than single computers of comparable speed or availability.Computer clusters emerged as a result of convergence of a number of computing trends including the availability of low-cost microprocessors, high-speed networks, and software for high-performance...

Chemical vapor deposition (CVD) is a vacuum deposition method used to produce high-quality, and high-performance, solid materials. The process is often used in the semiconductor industry to produce thin films.In typical CVD, the wafer (substrate) is exposed to one or more volatile precursors, which react and/or decompose on the substrate surface to produce the desired deposit. Frequently, volatile by-products are also produced, which are removed by gas flow through the reaction chamber. Microfabrication processes widely use CVD to deposit materials in various forms, including: monocrystalline, polycrystalline, amorphous, and epitaxial. These materials include: silicon (dioxide, carbide, nitride, oxynitride), carbon (fiber, nanofibers, nanotubes, diamond and graphene), fluorocarbons, filaments, tungsten, titanium nitride and various high-κ dielectrics. The term chemical vapour deposition was coined 1960 by John M. Blocher, Jr. who intended to differentiate chemical from physical vapour deposition (PVD). Types CVD is practiced in a variety of formats. These processes generally...

The Apple T2 (Apple's internal name is T8012) security chip is a system on a chip "SoC" tasked with providing security and controller features to Apple's Intel based Macintosh computers. It is a 64-bit ARMv8 chip and runs bridgeOS. T2 has its own RAM and is essentially a computer of its own, running in parallel to and responding to requests by the main computer that the user interacts with. Design The main application processor in T2 is a variant of the Apple A10, which is a 64-bit ARMv8.1-A based CPU. It is manufactured by TSMC on their 16 nm process, just as the A10. Analysis of the die reveals a nearly identical CPU macro as the A10 which reveals a four core design for its main application processor, with two large high performance cores, "Hurricane", and two smaller efficiency cores, "Zephyr". Analysis also reveals the same amount of RAM controllers, but a much reduced GPU facility; three blocks, only a quarter the size compared to A10.The die measures 9.6 × 10.8 mm, a die size of 104 mm2, which amounts to about 80% of the size of the A10.As it serves as a co-processor to its Intel based host, it also...

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