(n.) A curve traced by the end of a string wound upon another curve, or unwound from it; -- called also evolvent. See Evolute.
Example Sentences:
(1) Here we report direct measurements of protein kinase C (PKC) activity in uninduced ectoderm, and in neuroectoderm shortly after induction by the involuting mesoderm, in Xenopus laevis embryos.
(2) The most common type of osteoporosis is involutional, and two subtypes are recognized: type 1 and type 2.
(3) The involution of crown odontoblasts after primary dentinogenesis in teeth of limited eruption is discussed.
(4) The treatment of hemangiomas with X-rays has been sharply criticized because of their tendency to involute spontaneously.
(5) Glands with only slight involution and containing numerous germinal centres were more commonly seen in young female patients.
(6) In conclusion, the association of T4 and iodide seems to be the best way to obtain a rapid and complete involution of thyroid hyperplasia.
(7) Less amount of parenchyma and growth of the stroma in baboons and a greater mitotic complex in rhesus monkeys show more pronounced involution processes in baboons.
(8) Further, CPA is unable to stimulate proliferation or restore the function of the involuted rat prostate.
(9) The MI response was however depressed in both age groups, and the thymus and bursa were involuted.
(10) It is concluded that the acute involution of the thymus in children with non-infectious and acute infectious diseases results in the progressive decrease of the production by the thymus of the immunomodulating polypeptides (thymic hormones) which is restored in the period of recovery.
(11) The involution progress of the tonsil is a shift from immature B- and T cell forms to matured differentiation stages.
(12) The interpretation of aspiration cytologic smears that contain a predominance of follicular components often presents a dilemma to the clinician who is treating a patient who has a dominant thyroid nodule, especially when thyroid-stimulating hormone suppression does not produce any significant involution of the dominant nodule.
(13) The time-courses of the biochemical and histopathological responses suggest that the lipid peroxidation may be an end-result, rather than a cause, of thymic involution and injury to thymic lymphocytes in nickel-treated rats.
(14) We conjecture that postmenopausal and involutional osteoporosis were far advanced before the development of acromegaly, explaining the coexistence of the two conditions.
(15) The myoepithelium of developing, lactating, and involuting mammary gland of the mouse exhibits a high alkaline phosphatase activity.
(16) Both the post-partum involution of the rat uterus and the rapid breakdown of collagen that accompanies it are extensively inhibited by oestrogenic hormones.
(17) These preparations revealed a failure of head involution and the loss or disruption of several head structures, including the salivary glands and the H-piece and ventral arm of the cephalopharyngeal apparatus.
(18) Thereafter, involution still continued and equal diameters for the horns were not found until 5 weeks after parturition.
(19) The enzymes glucose 6-phosphate dehydrogenase, 6-phosphogluconate dehydrogenase, phosphoglucomutase, UDP-glucose pyrophosphorylase, phosphofructokinase, ATP-citrate lyase and acetyl-CoA carboxylase have been assayed in rat mammary glands in various stages of involution after hypophysectomy and weaning.
(20) A total of 101 patients suffering from slowly progressive schizophrenia with hypochondriac symptomatology and a manifestation or a relapse of the disease in the involutional age have been studied.
Tangent
Definition:
(v. t.) A tangent line curve, or surface; specifically, that portion of the straight line tangent to a curve that is between the point of tangency and a given line, the given line being, for example, the axis of abscissas, or a radius of a circle produced. See Trigonometrical function, under Function.
(a.) Touching; touching at a single point
(a.) meeting a curve or surface at a point and having at that point the same direction as the curve or surface; -- said of a straight line, curve, or surface; as, a line tangent to a curve; a curve tangent to a surface; tangent surfaces.
Example Sentences:
(1) The association constants and the binding capacities of association of small molecules with macromolecules have been determined by the tangent analysis, the graphical analysis, and the computer data analysis, by trial and convergence of the Scatchard plot.
(2) Tangent-screen studies uncovered neurasthenic spiral fields superimposed on hysterical tubular contractions of both eyes.
(3) Two principles have to be considered: 1. the image of a curved surface will only show the surface area where the rays form a tangent to the surface; 2. in tomography the blurring of the image increases with an increase of the tomographic angle and the distance of the object to the plane in focus.
(4) Tangent-screen visual fields were compared with the fields determined by a newly acquired automated perimeter in 100 eyes of consecutive patients with glaucoma or suspected glaucoma.
(5) The mathematical method was more practical and overcame the variability of the tangent method.
(6) First the angle between the line drawn along the right upper lobe artery and the tangent drawn along the point of junction of superior and lateral borders of the right pulmonary artery was determined.
(7) Extracellular recordings were made from afferents to the Purkinje cells of the flocculus of monkeys either spontaneously making saccadic eye movements (saccades) or trained to fixate a small visual target projected on a tangent screen.
(8) Twelve of 16 dissatisified bifocal contact lens wearers (75%) were successfully fit with the Tangent Streak trifocal.
(9) In his four-star review for the Guardian, Michael Billington described the production as "an exuberantly inventive evening, one existing in its own right at a tangent to the original".
(10) The tangent values were calculated from the curves that correlate well with the degrees of nuclear cataract.
(11) We propose a correction, the hyperbolic tangent, to linearize the data over all sizes, and we discuss evolutionary reasons for the relatively small brain size of the largest vertebrates.
(12) With the manual (Goldmann) perimeter and the tangent screen, special statokinetic techniques help in both assessment and enhancement of patient reliability.
(13) The approximated curve of the corneal posterior curvature and the line tangent to the anterior surface of the iris were calculated as the anterior chamber angle.
(14) This algorithm, named 'tangent exponential' was demonstrated to converge for all initial conditions when the initial substrate concentration is positive.
(15) (4) The angle of the tangent to any segment of the curve of Spee to the plane of motion determines the optimal height and angulation of the cusps of the segment.
(16) The morphology of the facial surface can be described by an angle formed between the tangent at the point of bracket placement and the long axis of the crown.
(17) Enamel had a modulus which was approximately three to five times higher, and a lower loss tangent than those of dentin.
(18) Presently, by applying the considerations of Maxwell-Boltzmann statistics, the Langevin function is shown as the appropriate and justifiable sigmoid (instead of the conventional hyperbolic tangent function) to depict the bipolar nonlinear logic-operation enunciated by the collective stochastical response of artificial neurons under activation.
(19) Patients were treated with either tangential fields alone (n = 508) or tangents with a third field to the supraclavicular (SC) or SC-axillary (AX) region (n = 1116).
(20) 4.32pm: "I love Portuguese sardines," announces Kanjorski, going off at a slightly eccentric tangent.