WebTable of common functional groups. The following is a list of common functional groups. In the formulas, the symbols R and R' usually denote an attached hydrogen, or a hydrocarbon side chain of any length, but may sometimes refer to any group of atoms.. Hydrocarbons. Hydrocarbons are a class of molecule that is defined by functional groups called …

WebFunctional testing is a quality assurance (QA) process and a type of black-box testing that bases its test cases on the specifications of the software component under test. Functions are tested by feeding them input and examining the output, and internal program structure is rarely considered (unlike white-box testing). Functional testing is conducted to evaluate …

WebClassification. Terms such as functional colonic disease (or functional bowel disorder) refer in medicine to a group of bowel disorders which are characterised by chronic abdominal complaints without a structural or biochemical cause that could explain symptoms. Other functional disorders relate to other aspects of the process of …

WebHybrid functionals are a class of approximations to the exchange–correlation energy functional in density functional theory (DFT) that incorporate a portion of exact exchange from Hartree–Fock theory with the rest of the exchange–correlation energy from other sources (ab initio or empirical). The exact exchange energy functional is expressed in …

WebDownload Wikipedia for Android or iOS Save your favorite articles to read offline, sync your reading lists across devices and customize your reading experience with the official Wikipedia app. Google Play Store; Apple App Store; Commons Freely usable photos & more. Wikivoyage Free travel guide.

WebFunctional magnetic resonance imaging or functional MRI (fMRI) measures brain activity by detecting changes associated with blood flow. This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases.

WebThe transform of function () at frequency is given by the complex number ^ ().Evaluating Eq.1 for all values of produces the frequency-domain function. The Fourier transform is denoted here by adding a circumflex to the symbol of the function. When the independent variable represents time (often denoted by instead of ), the transform variable represents …

WebFunctional electrical stimulation (FES) is a technique that uses low-energy electrical pulses to artificially generate body movements in individuals who have been paralyzed due to injury to the central nervous system.More specifically, FES can be used to generate muscle contraction in otherwise paralyzed limbs to produce functions such as grasping, …

WebSaudi Binladin Group (SBG; Arabic: مجموعة بن لادن السعودية Maǧmūʿat Bin Lādin al-Saʿūdiyyah), known as Binladin Group Global Holding Company since 2019, is a multinational construction conglomerate headquartered in Jeddah, Saudi Arabia.In 2011, the Saudi Binladin Group signed a US$1.23 billion contractual agreement to construct the tallest …

WebIn chemistry, a hydroxy or hydroxyl group is a functional group with the chemical formula −OH and composed of one oxygen atom covalently bonded to one hydrogen atom. In organic chemistry, alcohols and carboxylic acids contain one or more hydroxy groups. Both the negatively charged anion HO −, called hydroxide, and the neutral radical HO·, known …