(1) Sec-alpha-halo-nitro compounds are active antibacterial and antifungal agents, and the sec-bromo derivatives are the most active and stable.
(2) A temperature-sensitive mutant of Saccharomyces cerevisiae was identified which at the restrictive temperature of 37 degrees C is unable to secrete a number of cell wall-associated proteins and thus resembles previously reported sec mutants.
(3) The overall effect achieved with LTS was less than that with LTP, but it is possible to reduce IOP by selecting more reasonable parameters, e.g., a laser setting of 200mW, a 50 microns spot size and a 0.5 to 1-sec duration.
(4) Hydrostatic occlusion of arteries with 12 kPa (90 mmHg) for 30 sec did not affect endothelial morphology and fibrinolytic activity, but after occlusion for 5 or 20 min the endothelium in both arteries and veins was severely damaged.
(5) The hemolytic characteristics of 14 different polydimethyl-siloxane materials were studied, using a rotating disk device to shear whole human blood for 6000 sec.
(6) All are satisfied by [Formula: see text], where N is the size of rod signal, constant for threshold; theta, theta(D) are steady backgrounds of light and receptor noise; varphi is the threshold flash with sigma a constant of about 2.5 log td sec; B the fraction of pigment in the bleached state.
(7) To determine the visual threshold, the intensity of light was reduced, from 100 Lx (starting point) by 10 Lx steps in each trial, until the subject made 10 non-response trials (i.e., no dipper approach within 1.0 sec after the light onset) among 10 trials.
(8) sec.-1); b) an enhancement of fast (15-25 Hz) oscillations in the cortical spontaneous electrical activity and weakening and modification of the effects of the blockader of synthesis of MA-alpha-methyl-dioxiphenylalanine.
(9) As a conclusion sec-butanol, probably through its metabolite methyl-ethyl-ketone, is the most potent inducer of microsomal cytochrome P-450 in liver and kidney while iso-butanol does not alter total cytochrome P-450.
(10) Transient peripheral vasomotor constriction and heart rate increases were initiated within an 8- to 12-sec period following target detection with the predictable schedule, with subjects evincing greater responsivity than their nonpredictable schedule counterparts.
(11) The light rises to a peak in a few sec and then falls in 0.5-5 min to a new steady level that is always greater than the level in the absence of K.3.
(12) The contractile ring exists from about 20 sec after anaphase to the end of furrowing activity, i.e., 6-7 min at 20 degrees C. It is closely associated with the plasma membrane at all times, and is probably assembled there.
(13) The other mode of response had slower [Ca2+]i kinetics, in which 50 sec or more were required to double [Ca2+]i, which remained at this level throughout the observation period (2.5 min).
(14) The time for recovery to half maximal tension is about 0.68 sec, and restoration is complete at about 4 sec.2.
(15) The sec2-41 mutation exhibits synthetic lethality with the same subset of the late acting sec mutants as does sec4-8 and sec15-1.
(16) Skin displacement increased approximately linearly with increasing forces at the beginning of static stimulation, but over time (at least up to 20 sec), the relationship became negatively accelerated.
(17) (2) The Bunsen-Roscoe Law of Reciprocity was found to hold for the photoinduction of fruiting bodies for the interval 36 to 2000 sec with light of 448 nm.
(18) We studied the effects of 16,16-dimethyl prostaglandin E2 (dm-PGE2) and sofalcone, a new antiulcer agent developed in Japan, on ethanol damage to isolated surface epithelial cells (SEC) in vitro and gastric mucosa of rats in vivo.
(19) However, 80% or more of PGE2-Me was hydrolyzed rapidly and recovered as PGE2 in the brain within 15 sec post-injection.
(20) Twenty watts constant wave Nd-YAG laser operating at 1.06 micron was enough to produce complete A-V block in approximately 15 sec.
Secant
Definition:
(a.) Cutting; divivding into two parts; as, a secant line.
(a.) A line that cuts another; especially, a straight line cutting a curve in two or more points.
(a.) A right line drawn from the center of a circle through one end of a circular arc, and terminated by a tangent drawn from the other end; the number expressing the ratio line of this line to the radius of the circle. See Trigonometrical function, under Function.
Example Sentences:
(1) The absorbed light per unit area illuminated decreases with increasing angle, because the area illuminated by the laser beam is proportional to the secant of the incident angle.
(2) In the course of history of anatomy the prosector (dissector, incisor, secant, sculptor, procurator) held total different positions: at first he acted as a manual craftsman (barber surgeon) and as teacher's assistant lacking any academic education (organized in fraternities or guilds).
(3) Newton's method appears to have better convergence properties than the secant method in the likelihood ratio test case.
(4) Results indicate that a secant modulus could be determined by measuring indenter force and contact area.
(5) The basis of several solution methods is described; the PROSYN program is capable of using either of two (bracketting and the secant method) of these procedures.
(6) The conjugate gradient method is used to optimize the inversion slice profile produced by complex hyperbolic secant selective pulses.
(7) It is found that multifrequency selective excitation with sinc pulses--up to eight slices are investigated--and two-frequency inversion with hyperbolic secant pulses lead to profiles comparable in quality and selectivity to those of conventional single-frequency pulses.
(8) Similarly, the secant method is easier to implement for the computation of score test based intervals.
(9) An automated imaging technique, based upon the method of directed secants, was used to quantify variations in bone porosity and trabecular size, distribution, and orientation within serial transverse histological sections of the L1 and L2 vertebral centrum.
(10) The Secant formula and Euler's formula were proved to be specific cases in this general solution.
(11) However, the secant method may be easier to program for models with link functions that are not natural.