(a.) Considered apart from any application to a particular object; separated from matter; existing in the mind only; as, abstract truth, abstract numbers. Hence: ideal; abstruse; difficult.
(a.) Expressing a particular property of an object viewed apart from the other properties which constitute it; -- opposed to concrete; as, honesty is an abstract word.
(a.) Resulting from the mental faculty of abstraction; general as opposed to particular; as, "reptile" is an abstract or general name.
(a.) Abstracted; absent in mind.
(a.) To withdraw; to separate; to take away.
(a.) To draw off in respect to interest or attention; as, his was wholly abstracted by other objects.
(a.) To separate, as ideas, by the operation of the mind; to consider by itself; to contemplate separately, as a quality or attribute.
(a.) To epitomize; to abridge.
(a.) To take secretly or dishonestly; to purloin; as, to abstract goods from a parcel, or money from a till.
(a.) To separate, as the more volatile or soluble parts of a substance, by distillation or other chemical processes. In this sense extract is now more generally used.
(v. t.) To perform the process of abstraction.
(a.) That which comprises or concentrates in itself the essential qualities of a larger thing or of several things. Specifically: A summary or an epitome, as of a treatise or book, or of a statement; a brief.
(a.) A state of separation from other things; as, to consider a subject in the abstract, or apart from other associated things.
(a.) An abstract term.
(a.) A powdered solid extract of a vegetable substance mixed with sugar of milk in such proportion that one part of the abstract represents two parts of the original substance.
Example Sentences:
(1) For dipeptides containing the amino terminal residues glycine, alanine and phenylalanine, abstraction of the hydrogen from the carbon adjacent to the peptide nitrogen was the major process leading to the spin-adducts.
(2) The death certificates were abstracted; all deaths under age 60 and a 20% sample of deaths 60 and older were examined.
(3) They are most commonly described as conduct disordered and hyperactive, appear heir to a variety of deficits in verbal and abstract cognition, and perform more poorly in the academic environment.
(4) Actin also exhibited a clear dual wave pattern of transport that coincided well with that of tubulin, indicating that both actin and tubulin were the major components of both groups IV and V.(ABSTRACT TRUNCATED AT 250 WORDS)
(5) A mathematical model that abstracts the major features of the vegetative life cycle of Neurosopra crassa has been developed, and the action of selection in this model and various extensions of it is such as to maintain polymorphisms of vegetative incompatibility factors.
(6) Scott insisted he was an abstract painter in the way he felt Chardin was too: the pans and fruit were uninteresting in themselves; they were merely "the means of making a picture", which was a study in space, form and colour.
(7) Neuropsychological functioning in 90 male and female alcoholics and 65 peer controls was examined using both accuracy and time measures for four basic types of neuropsychological functioning: verbal skills, learning and memory, problem-solving and abstracting, and perceptual-motor skills.
(8) 131 cases of the Sudden Infant Death Syndrome (SIDS) among infants born in the Municipality of Copenhagen during 1956--1971 were analysed on the basis of data collected prospectively by the infant health visitors and abstracted from police reports.
(9) Case abstract data are routinely collected by hospital abstracting services, peer review organizations, and some state agencies.
(10) 260, 9265-9271] and possibly electron abstraction-water addition.
(11) All 546 patients were surveyed prospectively, using the Health Assessment Questionnaire and information abstracted from hospital records.
(12) From the patients' performance we make the following theoretical claims: that some arithmetic facts are stored in the form of individual fact representations (e.g., 9 x 4 = 36), whereas other facts are stored in the form of a general rule (e.g., 0 x N = 0); that arithmetic fact retrieval is mediated by abstract internal representations that are independent of the form in which problems are presented or responses are given; that arithmetic facts and calculation procedures are functionally independent; and that calculation algorithms may include special-case procedures that function to increase the speed or efficiency of problem solving.
(13) Narrow paths weave among moss-covered ornate arches and towers on the 80-acre site, and huge abstract sculptures and staircases lead nowhere, but up to the sky.
(14) On the basis of information abstracted from case histories, 41 patients who had experienced epileptic seizures thought to be due either to treatment with psychiatric drugs or to withdrawal from sedative drugs were compared with a control group of patients.
(15) 11 (suppl 14) 331 (abstract)] [14] also indicates that sensitivity to 4-HC can be used to distinguish primitive progenitor cells from committed progenitor cells.
(16) Although these differences in kinetics suggest differences in control mechanism(s), the absence of I and T on the surface of NaCl-grown cells suggests that there is also a common regulatory link among H, S and L.(ABSTRACT TRUNCATED AT 250 WORDS)
(17) This is an important precedent, because hydrogen abstraction from carbon-10 is a critical step in the lipoxygenase-catalyzed synthesis of 8- and 12-hydroperoxy-eicosatetraenoates (HPETEs) and for the conversion of 5- and 15-HPETEs to leukotrienes.
(18) The correlations between Inability to Abstract and Autism before and after those scales that contributed significantly to the Rs had been partialed out also were calculated.
(19) For example, population spikes of "short" latency (3-4 or 4-5 ms, depending on the animal) exhibited only facilitation in response to interstimulus intervals of 1-4 ms.(ABSTRACT TRUNCATED AT 400 WORDS)
(20) The inward current caused by nicotine was unaffected by intracellular GTP gamma S.(ABSTRACT TRUNCATED AT 400 WORDS)
Introduction
Definition:
(n.) The act of introducing, or bringing to notice.
(n.) The act of formally making persons known to each other; a presentation or making known of one person to another by name; as, the introduction of one stranger to another.
(n.) That part of a book or discourse which introduces or leads the way to the main subject, or part; preliminary; matter; preface; proem; exordium.
(n.) A formal and elaborate preliminary treatise; specifically, a treatise introductory to other treatises, or to a course of study; a guide; as, an introduction to English literature.
Example Sentences:
(1) The rise of malaria despite of control measures involves several factors: the house spraying is no more accepted by a large percentage of house holders and the alternative larviciding has only a limited efficacy; the houses of American Indians have no walls to be sprayed; there is a continuous introduction of parasites by migrants.
(2) The introduction of intravenous, high-dose thrombolytic therapy during a brief period has markedly reduced mortality of patients with acute myocardial infarction.
(3) This promotion of repetitive activity by the introduction of additional potassium channels occurred up to an "optimal" value beyond which a further increase in paranodal potassium permeability narrowed the range of currents with a repetitive response.
(4) After a review of the technical development and application of staplers from their introduction to the present day, the indications to the use of this instrument in all gastroenterological areas from the oesophagus to the rectum as well as in chest, gynaecological and urological surgery specified.
(5) Benzyloxycarbonylarginine p-nitrophenyl ester and other activated esters of N-a-sustituted arginine salts may be useful reagents for introduction of trypsin-labile protecting groups into peptide fragments for purpose of polypeptide semi-synthesis.
(6) Thus, introduction of arginine in position 5 with a hydrophobic amino acid in position 6 is compatible with high potency in several biological systems and results in compounds with lowered potency to release histamine compared to homologous peptides with tyrosine in position 5 and D-arginine in position 6.
(7) The patient, a 12 year-old boy, showed a soft white yellowish mycotic excrescence with clear borders which had followed the introduction of a small piece of straw into the cornea.
(8) These included: 1) association of infectious processes with other laboratory results; 2) a feeling of integration with the patient and health care team; and 3) the introduction of medical terminology.
(9) The effect of this curriculum is measured by statistical analysis of resident-generated aesthetic surgery cases in one year following the introduction of this curriculum into the teaching program.
(10) An experience in working out and introduction of a system of failure-free performance work as one of the most important steps in creating a complex system for the production quality control at the Leningrad combine "Krasnogvardeets" is described.
(11) In contrast, introduction of p21(Val-12) resulted in a prolonged delay (6 hours) of the effect which lasted for more than 24 hours.
(12) The purpose of this study was to determine whether there was a temporal association between the introduction of a Fetal Diagnostic and Treatment Center and changes in fetal mortality.
(13) Transtracheal oxygen (TTO) delivery for patients with chronic hypoxemia has been used increasingly since its introduction in 1982.
(14) A method for the introduction of side chains containing isonitrile (isocyanide, functional group) on the backbone of polysaccharides and other hydroxylic polymers was developed.
(15) Since its introduction by Wide, Bennich, and Johansson in 1967, the radioallergosorbent test (RAST) has been increasingly used for measurement of specific IgE antibodies.
(16) Presumable this medium was modified repeatedly after its introduction in bacteriology in 1918 by Gassner.
(17) Conjugates of the synthetic peptide with phycoerythrin (Mr about 150 kD) and with secretory IgA (Mr about 380 kD) were both found in the nucleus very shortly after their introduction into the cytoplasm.
(18) While mindful of the potential difficulties which attend its introduction into the treatment situation there is an attempt to balance this position through a consideration of the appropriate conditions and modes of operation under which a humor-enriched approach may be efficacious.
(19) An arrest of a depressive syndrome in manic-depressive psychosis in old age can be attained by an introduction of 150-200 mg of azafen daily.
(20) The introduction of non-sedating H1-selective antihistamine drugs and local corticosteroids has been an important therapeutic advance.