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Quantitative Structure-Activity Relationship
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D021281 |
[A quantitative prediction of the biological, ecotoxicological or pharmaceutical activity of a molecule. It is based upon structure and activity information gathered from a series of similar compounds.
] |
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Quantitative Trait Loci
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D040641 |
[Genetic loci associated with a quantitative trait.
] |
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Quantitative Trait, Heritable
|
D019655 |
[A characteristic showing quantitative inheritance such as SKIN PIGMENTATION in humans. (From A Dictionary of Genetics, 4th ed)
] |
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Quantum Dots
|
D045663 |
[Nanometer sized fragments of semiconductor crystalline material which emit PHOTONS. The wavelength is based on the quantum confinement size of the dot. They can be embedded in MICROBEADS for high throughput ANALYTICAL CHEMISTRY TECHNIQUES.
] |
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Quantum Theory
|
D011789 |
[The theory that the radiation and absorption of energy take place in definite quantities called quanta (E) which vary in size and are defined by the equation E=hv in which h is Planck's constant and v is the frequency of the radiation.
] |
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Quarantine
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D011790 |
[Restriction of freedom of movement of individuals who have been exposed to infectious or communicable disease in order to prevent its spread; a period of detention of vessels, vehicles, or travelers coming from infected or suspected places; and detention or isolation on account of suspected contagion. It includes government regulations on the detention of animals at frontiers or ports of entrance for the prevention of infectious disease, through a period of isolation before being allowed to enter a country. (From Dorland, 28th ed & Black's Veterinary Dictionary, 17th ed)
] |
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Quartz
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D011791 |
[Quartz (SiO2). A glassy or crystalline form of silicon dioxide. Many colored varieties are semiprecious stones. (From Grant & Hackh's Chemical Dictionary, 5th ed)
] |
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Quartz Crystal Microbalance Techniques
|
D058525 |
[A piezoelectric mass-sensing devise sensitive in the nanomolar range.
, The use of a quartz crystal microbalance for measuring weights and forces in the micro- to nanogram range. It is used to study the chemical and mechanical properties of thin layers, such as polymer coatings and lipid membranes; and interactions between molecues.
] |
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Quasispecies
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D000074704 |
[Variations among a population of a given species due to errors in replication of the genome that result in a distribution of non-identical members.
] |
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Quassia
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D032271 |
[A plant genus of the family SIMAROUBACEAE. Members contain quassinoids. Quassia simarouba has been reclassified as SIMAROUBA.
] |
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Quassins
|
D036702 |
[A group of degraded TRITERPENES which have lost ten carbons (8 from the side chain, C17, and one from C4) so have C20 skeletons which could be misinterpreted as DITERPENES. They especially occur in plants of the SIMAROUBACEAE family.
] |
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Quaternary Ammonium Compounds
|
D000644 |
[Derivatives of ammonium compounds, NH4+ Y-, in which all four of the hydrogens bonded to nitrogen have been replaced with hydrocarbyl groups. These are distinguished from IMINES which are RN=CR2.
] |
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Quaternary Prevention
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D000081404 |
[Actions taken to protect individuals (i.e. persons/patients) from unnecessary medical interventions that are likely to cause more harm than good.
] |
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Quebec
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D011792 |
[A province of eastern Canada. Its capital is Quebec. The region belonged to France from 1627 to 1763 when it was lost to the British. The name is from the Algonquian quilibek meaning the place where waters narrow, referring to the gradually narrowing channel of the St. Lawrence or to the narrows of the river at Cape Diamond. (From Webster's New Geographical Dictionary, 1988, p993 & Room, Brewer's Dictionary of Names, 1992, p440)
] |
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Queensland
|
D011793 |
[A state in northeastern Australia. Its capital is Brisbane. Its coast was first visited by Captain Cook in 1770 and its first settlement (penal) was located on Moreton Bay in 1824. The name Cooksland was first proposed but honor to Queen Victoria prevailed. (From Webster's New Geographical Dictionary, 1988, p996 & Room, Brewer's Dictionary of Names, 1992, p441)
] |
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Quercetin
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D011794 |
[A flavonol widely distributed in plants. It is an antioxidant, like many other phenolic heterocyclic compounds. Glycosylated forms include RUTIN and quercetrin.
] |
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Quercus
|
D029963 |
[A plant genus of the family FAGACEAE that is a source of TANNINS. Do not confuse with Holly (ILEX).
] |
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Quetiapine Fumarate
|
D000069348 |
[A dibenzothiazepine and ANTIPSYCHOTIC AGENT that targets the SEROTONIN 5-HT2 RECEPTOR; HISTAMINE H1 RECEPTOR, adrenergic alpha1 and alpha2 receptors, as well as the DOPAMINE D1 RECEPTOR and DOPAMINE D2 RECEPTOR. It is used in the treatment of SCHIZOPHRENIA; BIPOLAR DISORDER and DEPRESSIVE DISORDER.
] |
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Quick Diagnosis Units
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D000084782 |
[Alternatives to conventional hospitalization for the diagnosis of suspected serious diseases allowing coordinated diagnostic procedures.
] |
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Quillaja
|
D031990 |
[A plant genus of the family ROSACEAE whose members produce SAPONINS.
] |
