(n.) A piece of glass, or other transparent substance, ground with two opposite regular surfaces, either both curved, or one curved and the other plane, and commonly used, either singly or combined, in optical instruments, for changing the direction of rays of light, and thus magnifying objects, or otherwise modifying vision. In practice, the curved surfaces are usually spherical, though rarely cylindrical, or of some other figure.
Example Sentences:
(1) These results demonstrate that increased availability of galactose, a high-affinity substrate for the enzyme, leads to increased aldose reductase messenger RNA, which suggests a role for aldose reductase in sugar metabolism in the lens.
(2) Based on several previous studies, which demonstrated that sorbitol accumulation in human red blood cells (RBCs) was a function of ambient glucose concentrations, either in vitro or in vivo, our investigations were conducted to determine if RBC sorbitol accumulation would correlate with sorbitol accumulation in lens and nerve tissue of diabetic rats; the effect of sorbinil in reducing sorbitol levels in lens and nerve tissue of diabetic rats would be reflected by changes in RBC sorbitol; and sorbinil would reduce RBC sorbitol in diabetic man.
(3) The significance of the differences in these two patterns of actin is discussed in terms of differences in the accommodative ability and static lens shape in these two animals.
(4) The epithelium of Brunner's gland stained intensely with Ricinus communis agglutinin-I (RCA-I), succinylated-WGA (S-WGA) and wheat-germ agglutinin (WGA), moderately with Bandeirea simplicifolia agglutinin-I (BS-I), Concanavalia ensiformis agglutinin (Con A) peanut agglutinin (PNA) and Ulex europaeus agglutinin-I (UEA-I) and occasionally with Dolichos biflorus agglutinin (DBA), Lens culinaris agglutinin (LCA) and soybean agglutinin (SBA).
(5) That is, he believes, to look at massively difficult, interlocking problems through too narrow a lens.
(6) 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.
(7) The third patient was using an extended-wear soft contact lens for correction of residual myopia.
(8) The cellularity depends on the type of the lens and the material of the lens and on the clinical picture of the disease.
(9) Although lens haemagglutinins were detected in 6 out of 7 rabbits, in only 3 of the 6 animals did the titre reach a maximum of 1:640.
(10) Dioptric aniseikonia was calculated between 1 month and 24 months after surgery (with Gruber's and Huber's computer program) on the basis of most recently obtained values (bulb axis length, depth of the anterior chamber, lens thickness, necessary refraction), and compared with subjective measurements taken with the phase difference haploscope.
(11) We propose that a channel with these properties could contribute to maintenance of lens transparency and fluid balance.
(12) Although the lens did not alter stereopsis, it did produce severe color discrimination losses for normal and dichromatic subjects.
(13) The general efficacy of this intraocular lens compared with other anterior chamber lenses was not addressed in this study.
(14) However, the monkey lens low molecular weight proteins differ from the human low molecular weight proteins in charge as well as molecular weight determined by SDS-PAGE.
(15) Fifty-five myopic naval personnel with no previous contact lens experience were put through a three-week study using these contact lenses.
(16) A Stryker turning frame was used during surgical removal of a posterior displaced lens.
(17) The biocompatibility and fixation of a new silicone intraocular lens was evaluated in the cat eye.
(18) Both organisms have previously been found to be sequestered in the posterior lens capsule by histological and microbiological examination of excised capsular specimens.
(19) Previous experiments had demonstrated that the receptors for the lectins soybean agglutinin (SBA), wheat germ agglutinin, concanavalin A and Lens culinaris agglutinin all were relatively uniformly distributed on both myoblasts and myotubes, and that SBA receptors were capable of rapid redistribution on myotubes but not myoblasts at 4 degrees C (Sawyer & Akeson, 1983).
(20) The relative permittivity and conductivity of rabbit eye lens were measured in the frequency domain between 2 and 18 GHz at temperatures of 37 and 20 degrees C. An analysis of the data suggested that a significant proportion of the bulk water in nuclear and cortical lens tissue may behave differently to pure water.
Les
Definition:
(n.) A leash.
Example Sentences:
(1) The Lambert-Eaton myasthenic syndrome (LES) is an autoimmune presynaptic disorder of peripheral cholinergic neurotransmission in which there is often an associated small cell lung carcinoma (SCC).
(2) The parameters of LES relaxation for both wet and dry swallows were similar using either a carefully placed single recording orifice or a Dent sleeve.
(3) (Observer, June 2013) Nathalie Kosciusko-Morizet , 40 Current job: MP Nicknames: The harpist, "Madame Condescendante" (Bertrand Delanoë), "L'emmerdeuse" (Pain in the neck – Jacques Chirac) Campaign slogan: Une nouvelle énergie pour les Parisiens (A new energy for Parisians) Born: Paris Family: Daughter of a local mayor, granddaughter of a former French ambassador and great-granddaughter of one of the founder members of the French Communist party.
(4) What did surprise pundits was Hollywood's recognition of this unflinching Austrian film about ageing as a candidate for best picture, among such expected contenders as Steven Spielberg's Lincoln , Ben Affleck's Argo and Tom Hooper's Les Misérables .
(5) Case histories of two patients with hypertensive LES and normal peristalsis in the body of the esophagus are contrasted to that of a patient with a hypertensive LES and diffuse esophageal spasm.
(6) The surface activity of two surfactant preparations, Lipid Extract Surfactant (LES) and Survanta, was examined during adsorption and dynamic compression using a pulsating bubble surfactometer.
(7) The diffusion paths are calculated by a variant of the time-dependent Hartree approximation which we call LES (locally enhanced sampling).
(8) Multiple factors contribute to the production of esophagitis in gastroesophageal reflux (GER), but the respective roles of esophageal (i. e. lower esophageal sphincter (LES) tone, peristalsis) and gastric factors (i. e. acid secretion and gastric emptying) are not well known.
(9) Former president Nicolas Sarkozy, leader of Les Républicains, also responded to the attacks with a call for a security crackdown.
(10) As Les Bleus returned to Paris after crashing out of the tournament in the first round , the French leader also called a crisis meeting of ministers over the debacle in South Africa.
(11) In that context, the amount paid for late-career work like Women of Algiers is probably a good investment; while it has nowhere near the raw energy of early masterpieces such as Les Demoiselles d’Avignon (1907) or the significance of mid-career icons such as Guernica (1937), in an international market where the artist’s name casts a spell on potential buyers, it’s a respectable piece that can be immediately identified as a “Picasso”.
(12) Manometrically determined LES length was increased after insertion of an Angelchik antireflux prosthesis but not by a Nissen fundoplication or sham operation.
(13) We recorded lower esophageal sphincter (LES) pressure and myoelectrical activity concurrently from the esophagus, LES, stomach, and proximal small intestine in unanesthetized opossums.
(14) A full marching band moved through a sea of umbrellas, playing the Les Miserables song Do You Hear the People Sing.
(15) It would have been better if Les Bleus had never gone to South Africa."
(16) Do one-day or shorter sections of the route between Les Houches and Argentière, or tackle the Tour du Mont Blanc, a strenuous 250km trail that takes in the most naturally dramatic slices of Switzerland, France and Italy.
(17) Les Cafeteras began the second half in similarly determined mode and the elusive Rincón sent a shot dipping fractionally over the bar from distance.
(18) The occurrence of gastroesophageal reflux after meals may be related to an increase in the rate of transient lower esophageal sphincter (LES) relaxations, the mechanisms of which are not understood.
(19) The pressure remains on other News Corp executives, with Murdoch's closest adviser Les Hinton flying into the UK yesterday.
(20) Pressure recordings in the esophageal body, LES and stomach were performed in 10 healthy subjects before and after caloric stimulation of the labyrinth.