(a.) Extinguished; put out; quenched; as, a fire, a light, or a lamp, is extinct; an extinct volcano.
(a.) Without a survivor; without force; dead; as, a family becomes extinct; an extinct feud or law.
(v. t.) To cause to be extinct.
Example Sentences:
(1) The stages of mourning involve cognitive learning of the reality of the loss; behaviours associated with mourning, such as searching, embody unlearning by extinction; finally, physiological concomitants of grief may influence unlearning by direct effects on neurotransmitters or neurohormones, such as cortisol, ACTH, or norepinephrine.
(2) The effect upon ethanol responding was found not to resemble a pattern of extinction, but rather was best described as a general overall reduction in responding.
(3) In a recent study, Orr and Lanzetta (1984) showed that the excitatory properties of fear facial expressions previously described (Lanzetta & Orr, 1981; Orr & Lanzetta, 1980) do not depend on associative mechanisms; even in the absence of reinforcement, fear faces intensify the emotional reaction to a previously conditioned stimulus and disrupt extinction of an acquired fear response.
(4) We conclude that the procedure used in this study is a non-intrusive intervention that is an extension of the current literature pertaining to sensory extinction.
(5) After 40 programmed minutes of acquisition and 12 min of maintenance, without notice, both schedules changed to extinction for 28 min.
(6) This differential absorbance is linear with increasing concentrations of Na2MoO4 and was used to calculate the molar extinction coefficient of molybdochelin at 425 nm (epsilon similar to 6,200).
(7) However, during massed testing, all subjects trained with response contingent CS termination showed an overall extinction influence, which was most pronounced in the medial subgroup, although the laterals showed frequency control as well.
(8) When reinforcement for competing behavior was withdrawn, however, rats resumed their original behavior and there were no overall savings in total responses to extinction.
(9) The relative amount of the crystals was measured in both amoeba strains on the basis of the integral extinction value.
(10) Chronic extinction of chain closed conditioned reflex in intact rabbits took five to six days.
(11) The amounts of phosphatidylcholine and sphingomyelin could be determined by high-performance liquid chromatography and ultraviolet absorption if the apparent extinction coefficient of the material analyzed was established.
(12) In a number of neurones the extinction of reflexes either does not change the reaction to acetylcholine, or enhances it.
(13) In Experiment 3, following an unsignaled reinforcement delay, groups receiving either no event or signaled food in the context responded faster in extinction than groups receiving no context exposure or unsignaled food.
(14) The optical extinction decreases as the red cell agglutinates grow, giving a parametric estimate of the haemagglutination rate.
(15) By calculating for DNA standard solutions the value of the ratio between the extinction at 665 nm after 15 min to the extinction of 600 nm after 2 min of the orcinol reaction it is possible to increase specifiaty of the orcinol method for determination of the RNA content.
(16) To lose the Sundarbans would be to move a step closer to the extinction of these majestic animals," said ZSL tiger expert Sarah Christie.
(17) Values obtained for thebuoyant density, isoelectric point, and extinction coefficient differed minimally; major differences were observed in the molecular weight and the characterisitc width of cylinders formed by in vitro-assembled T-layer of the wild-type and variant.
(18) The CS+ preference persisted for several weeks during extinction tests when both the CS+ and CS- were paired with IG water or with no infusions.
(19) The extinction coefficient at 550 nm for the oxidized enzyme is about 5300 (M subunit)-1 X cm-1.
(20) On this planet, extinction is the norm – of the 4 billion species ever thought to have evolved, 99% have become extinct.
Obsolescent
Definition:
(a.) Going out of use; becoming obsolete; passing into desuetude.
Example Sentences:
(1) He treats me to a 10-minute critique of global capitalism and inbuilt obsolescence and the iniquity of global labour markets.
(2) As a minimum, there must be a system to guard against incompetence through obsolescence of any of the practicing professionals.
(3) Following this procedure, seven of the 29 biopsies had focal segmented hyalinosis and 16 of the 29 had focal glomerular obsolescence.
(4) However, the matrix of obsolescent Alport glomeruli stained intensely for collagen V and collagen VI, while these collagen types were not prominent in obsolescent glomeruli of non-Alport diseases kidneys.
(5) This form of tubular change is quite different from the well-known atrophy of the proximal convoluted tubules belonging to obsolescent glomeruli in chronic glomerulonephritis.
(6) Planned obsolescence's running mate is Moore's law , which decrees that every two years the computing world doubles the amount of transistors on a computer chip and therefore the power of the computer.
(7) This is in part due to planned obsolescence – a devious ploy by manufacturers bolstered by marketing strategies to make us fall out of love with a product hastily.
(8) Implications for the obsolescence of parts of the literature of science are discussed, and the relevance of this analysis to Kuhn's work on scientific revolutions is briefly noted.
(9) In obsolescent glomeruli, anti-IV was not always detected although anti-V was constantly seen.
(10) The second thing you notice is that in the last decade or so, this warranted interceptions regime has been utterly wormholed, circumvented to the point of obsolescence.
(11) Percentage of obsolescent glomeruli and the degree of tubulointerstitial lesions, but not active glomerular lesions (crescents, necroses) predicted renal outcome.
(12) Thus the return-stroke muscle of the larval exopodites in which muscle fiber and motoneurons are identifiable permits study of the interaction between a neuron and its target muscle undergoing programmed obsolescence.
(13) Observation of serial sections showed that these epithelial cell clusters were derived from the distal convoluted tubules belonging to obsolescent glomeruli.
(14) In all eight biopsy specimens, we detected hyaline arterionephrosclerosis, focal glomerular obsolescence, and segmental, afibrillar thickening of glomerular basement membranes.
(15) Robots that can plant, fertilise, spray, weed, monitor, harvest, pack and transport crops will inhabit the countryside Such traditional, driven machines – even those adapted with GPS – are, however, already threatened with obsolescence.
(16) Other economic and operational benefits which result from the scheme are commercially disinterested advice on equipment obsolescence and replacement, and redistribution between the laboratories of old but useful equipment to meet specific needs of the service in the region.
(17) There was a positive correlation between an increase in renal cortical echoes and interstitial infiltration as well as with glomerular obsolescence, tubular atrophy, and vascular changes.
(18) Obsolescent Alport glomeruli, in which the capillary tuft had collapsed and few remaining cell nuclei were present, exhibited nearly complete loss of alpha 1(IV) and alpha 2(IV), like obsolescent glomeruli in non-Alport diseased kidneys.
(19) The patients were classified into three groups based on the histologic findings in their initial renal biopsies: Group I (n = 19) had a combination of global and segmental lesions; Group II (n = 8) had only globally sclerotic or obsolescent glomeruli; and Group III (n = 5) had only segmentally sclerosed glomeruli.
(20) 4) A European sharing economy In a packed tent outside the parliament, a film called The Light Bulb Conspiracy is showing, an investigative documentary about planned obsolescence – the engineering of products designed to fail in order to guarantee consumer demand.