(a.) Having a real position, existence, or energy; existing in fact; real; actual; -- opposed to negative.
(a.) Derived from an object by itself; not dependent on changing circumstances or relations; absolute; -- opposed to relative; as, the idea of beauty is not positive, but depends on the different tastes individuals.
(a.) Definitely laid down; explicitly stated; clearly expressed; -- opposed to implied; as, a positive declaration or promise.
(a.) Hence: Not admitting of any doubt, condition, qualification, or discretion; not dependent on circumstances or probabilities; not speculative; compelling assent or obedience; peremptory; indisputable; decisive; as, positive instructions; positive truth; positive proof.
(a.) Prescribed by express enactment or institution; settled by arbitrary appointment; said of laws.
(a.) Fully assured; confident; certain; sometimes, overconfident; dogmatic; overbearing; -- said of persons.
(a.) Having the power of direct action or influence; as, a positive voice in legislation.
(a.) Corresponding with the original in respect to the position of lights and shades, instead of having the lights and shades reversed; as, a positive picture.
(a.) Electro-positive.
(a.) Hence, basic; metallic; not acid; -- opposed to negative, and said of metals, bases, and basic radicals.
(n.) That which is capable of being affirmed; reality.
(n.) That which settles by absolute appointment.
(n.) The positive degree or form.
(n.) A picture in which the lights and shades correspond in position with those of the original, instead of being reversed, as in a negative.
(n.) The positive plate of a voltaic or electrolytic cell.
Example Sentences:
(1) The bank tellers who saw their positions filled by male superiors took special pleasure in going to the bank and keeping them busy.
(2) In each sheep there was a significant negative correlation between the glucose and corticosteroid concentrations in both maternal and fetal plasma, and there were positive correlations between the maternal and fetal plasma concentrations of glucose, and between the glucose and fructose concentrations of fetal plasma.
(3) None of the strains was found to be positive for cytotoxic enterotoxin in the GM1-ELISA.
(4) The patterns observed were: clusters of granules related to the cell membrane; positive staining localized to portions of the cell membrane, and, less commonly, the whole cell circumference.
(5) In 49 cases undergoing systemic lymphadenectomy 32 were found to have glandular involvement, of which both aortic and pelvic nodes were positive in 17 cases (53.1%), aortic nodes positive but pelvic negative in six (18.8%), and pelvic nodes positive but aortic negative in nine (28.1%).
(6) The Na+ ionophore, gramicidin, had a small but significant inhibitory effect on Na(+)-dependent KG uptake, demonstrating that KG uptake was not the result of an intravesicular positive Na+ diffusion potential.
(7) Fecal occult blood was positive in 4 patients and fecal leukocytes were positive in one patient.
(8) We have determined the genomic structure of the fosB gene and shown that it consists of 4 exons and 3 introns at positions also found in the c-fos gene.
(9) An unsaturated fatty acid auxotroph of Escherichia coli was grown with a series of cis-octadecenoate isomers in which the location of the double bond varied from positions 3 to 17.
(10) It is concluded that amlodipine reduces myocardial ischemic injury by mechanism(s) that may involve a reduction in myocardial oxygen demand as well as by positively influencing transmembrane Ca2+ fluxes during ischemia and reperfusion.
(11) Stimulation is also observed with mixtures of APC expressing DPw3 and APC expressing A1, and likewise, DPw3+ APC become stimulatory when preincubated with supernatants from A1-positive cells.
(12) Nine of 14 patients studied for documented clinical relapse had positive repeat studies.
(13) Ca2+ transport was positively correlated with MR cell density.
(14) At pH 7.0, reduction is complete after 6 to 10 h. These results together with an earlier study concerning the positions of the two most readily reduced bonds (Cornell J.S., and Pierce, J.G.
(15) A quadripolar catheter was positioned either at the site of earliest ventricular activation during induced monomorphic ventricular tachycardia or at circumscribed areas of the left ventricle.
(16) Fifteen sera ICA-IgG and ICA-protein A positive with high titres remained positive thereafter.
(17) These data indicate that RNA faithfully transfers "suppressive" as well as "positive" types of immune responses that have been reported previously for lymphocytes obtained directly from tumour-bearing and tumour-immune animals.
(18) Induction of labor, based upon only (1) a finding of meconium in the amniocentesis group or (2) a positive test in the OCT group, was nearly three times more frequent in the amniocentesis group.
(19) Mike Ashley told Lee Charnley that maybe he could talk with me last week but I said: ‘Listen, we cannot say too much so I think it’s better if we wait.’ The message Mike Ashley is sending is quite positive, but it was better to talk after we play Tottenham.” Benítez will ask Ashley for written assurances over his transfer budget, control of transfers and other spheres of club autonomy, but can also reassure the owner that the prospect of managing in the second tier holds few fears for him.
(20) When subjects centered themselves actively, or additionally, contracted trunk flexor or extensor muscles to predetermined levels of activity, no increase in trunk positioning accuracy was found.
Vitreous
Definition:
(a.) Consisting of, or resembling, glass; glassy; as, vitreous rocks.
(a.) Of or pertaining to glass; derived from glass; as, vitreous electricity.
Example Sentences:
(1) Histologic examination of the anterior and posterior chambers and the vitreous led to a diagnosis of endophthalmitis caused by Coccidioides immitis infection.
(2) The distribution of polyanionic glycosaminoglycans (GAGs) in the developing mouse vitreous was studied histologically by P.A.S.
(3) Suspensions of isolated insect flight muscle thick filaments were embedded in layers of vitreous ice and visualized in the electron microscope under liquid nitrogen conditions.
(4) The advantages of the incision through the pars plana ciliaris are (1) easier approach to the vitreous cavity, (2) preservation of the crystalline lens and an intact iris, and (3) circumvention of the corneal and chamber angle complications sometimes associated with the transcorneal approach.
(5) That is cystoid macular edema is associated with incomplete PVD with vitreous contraction.
(6) Chemically isolated separate preparations of the non-aggregating protein-chondroitin-keratin sulphate (PCKS) fraction from the hyaline cartilage and hyaluronic acid (HUA) of the vitreous body and of the umbilicus were investigated by electron microscopy.
(7) The eye is of the closed vesicle type and is composed of retina, cornea, vitreous body, lens and optic nerve.
(8) In proliferative retinopathy, the mid-vitreous fluorophotometry readings were abnormally increased, correlating well with the extent of the peripheral angiographic changes (neovascularization).
(9) Because they prevent secondary capsular opacification and anterior vitreous propagation, it appears that such barrier-type implants should be systematically placed.
(10) The mean in the newborn-to-6-month-old group was 47.59 D; in the 12-18-month-old group it had decreased to 45.56 D. The cornea appears to stabilize at about 54 months, with an average reading of 42.69 D. Evaluation of 11 eyes diagnosed as having persistent hyperplastic primary vitreous revealed that eyes with this diagnosis generally have steeper corneas than normal eyes at any given age.
(11) The cortical vitreous of the normal (control) eye appeared to be a lamellar structure composed of sheets of collagen mesh.
(12) Four of 15 retinas unable to be attached by scleral buckling were reattached after the addition of a single vitreous operation.
(13) A case is presented of a Medallion intraocular lens that dislocated posteriorly into the vitreous cavity.
(14) We evaluated the efficacy of microspheres of biodegradable polymers as a slow releasing drug delivery system in the vitreous body.
(15) The concentrations are different in the various tissues and show a relationship to the distance from cornea to vitreous.
(16) Active transport of fluorescein across the blood-retinal barrier in the direction of vitreous to blood does not seem to be significant within the first 2 hr after fluorescein injection.
(17) This study was undertaken to determine if extracapsular lens extraction enhances the ability of common bacteria to infect the anterior segment of the eye and if the posterior lens capsule acts as a protective barrier denying the infectious process access to the vitreous body.
(18) After WGA-HRP injection into the vitreous cavity of one eye, terminal labeling was seen in the suprachiasmatic nucleus, dorsal and ventral lateral geniculate nuclei, pretectum and superficial layer of the superior colliculus.
(19) Experiences with surgical treatment of chronic endogenous uveitis in human patients have shown that vision-impairing axial opacities in the vitreous body can be removed by pars plana vitrectomy, and that a considerable decrease in the frequency and severity of uveitic relapses results.
(20) Ocular injuries were observed in 7 of the 10 cases and when present always included retinal, vitreous, and subdural optic nerve hemorrhages.