(a.) Not pervious; not admitting of entrance or passage through; as, a substance impervious to water or air.
Example Sentences:
(1) Placement of impervious knitted Dacron velour aortic grafts in baboons reproduced platelet consumption that progressively normalized over six weeks postoperatively.
(2) Below-zero temperatures crowned the top of the US from Idaho to Minnesota, where many roads still had an inch-thick plate of ice, polished smooth by traffic and impervious to ice-melting chemicals.
(3) There is all sorts of opacity which makes it easy for an employee to suffer retaliation.” Despite recent reforms to improve transparency and accountability, the organisation remains impervious to public scrutiny, with no established mechanism for freedom of information – a right which more than 100 governments around the world have enshrined in law, and is openly advocated by UN bodies such as Unesco.
(4) Persons suffering from major narcissistic problems generally are assumed to be impervious to time-limited treatments.
(5) Or you can do it at the desk with your smartphone if you can remember the website address, don’t mind the data roaming charges, can remember your national insurance number and are impervious to the long queue developing behind you”.
(6) On the other hand, the performance of a material that is liquid-proof is absolute--it is impenetrable and can be accurately described as impervious.
(7) A mathematical solution has been obtained for the indentation creep and stress-relaxation behavior of articular cartilage where the tissue is modeled as a layer of linear KLM biphasic material of thickness h bonded to an impervious, rigid bony substrate.
(8) This is the essence of the problem, and sadly, Festinger's words ring true today: the conviction of humans is all too often impervious to the very evidence in front of them.
(9) The amplitude of quantal events is impervious to marked changes in presynaptic depolarization and is not affected by experimental procedures which promote accumulation of calcium ions in the terminals.
(10) Many such cases prove impervious to extensive articulation therapy, yet physical management may constitute "over-correction" with undesirable sequelae.
(11) Purified thymidylate synthetase can be assayed radiochemically using labelled deoxyuridine monophosphate as substrate, but cells are impervious to deoxyuridine monophosphate and so intracellular thymidylate synthetase activity cannot be assayed in this way.
(12) Heseltine's achievements have been matched by conspicuous failures, but his self belief is almost thrillingly impregnable, making him quite impervious to any such impression.
(13) It is rife with secrecy, top-down managerial manipulation, impervious to any outside scrutiny, contemptuous of any questioning, and has embraced extensive surveillance and discriminatory policing of religious and racial minorities.
(14) These actions of YM14673 were not due to a direct interference with brain TRH binding or a nature impervious to a TRH-degrading enzyme.
(15) The numerous tight junctions, impervious to the tracer, are always accompanied by a profusion of microfilaments.
(16) A newborn baby with a large unruptured omphalocele was successfully treated by covering the sac with a skin-like polymer membrane that is flexible, elastic, and impervious to bacteria and water.
(17) Bateman's unspeakable imaginings are the disease of an imperviously complacent world.
(18) In these measurements with an impervious, plane-ended indenter, the equilibrium deformation was systematically greater than values predicted from the instant response by the linear biphasic theory.
(19) "He appears impervious even to input from top Afghans."
(20) A tractor owned by a member of Greece’s far-right Golden Dawn is parked outside of a shelter and a dozen young men from Afghanistan rest against its wheels, grateful for the shade and impervious to the protest.
Penetration
Definition:
(n.) The act or process of penetrating, piercing, or entering; also, the act of mentally penetrating into, or comprehending, anything difficult.
(n.) Acuteness; insight; sharp discoverment; sagacity; as, a person of singular penetration.
Example Sentences:
(1) The penetration of (22)Na was not prevented by the presence of metabolic inhibitors or by 500 mm NaCl in the suspending medium.
(2) Content of cyclic nucleoside monophosphates was decreased in all the eye tissues in experimental toxico-allergic uveitis as well as penetration of cAMP into the fluid of anterior chamber of the eye.
(3) After four years of existence, many evaluations were able to show the qualities of this system regarding root canal penetration, cleaning and shaping.
(4) testosterone, fentanyl, nicotine) may ultimately be administered in this way, important questions pertaining to pharmacology (tolerance), toxicity (irritation, sensitisation) and dose sufficiency (penetration enhancement) remain.
(5) The automatic half of both the motor which advances the trepan as well as the second motor which rotates the trepan is triggered by the sudden change in electrical resistance between the trepan and the patient's internal body fluid, at the final stage of penetration.
(6) Thus, although ferric-enterochelin cannot penetrate the cell surface from outside, the complex that is formed within the envelope is transported normally into the cell.
(7) Major limitations of the conventional sperm penetration assay are the inability to assess several aspects of sperm function (zona binding and penetration) and the absence of human ovulatory products known to influence fertilization.
(8) The cercaria, microcercous in type, is liberated and actively penetrates a second terrestrial pulmonate where development to the free metacercarial stage takes place in the pericardial cavity.
(9) The incomplete penetrance of the neoplastic phenotype and the monoclonality of lymphoid tumors suggest that tumor formation in v-fps mice requires genetic or epigenetic events in addition to expression of the P130gag-fps protein-tyrosine kinase.
(10) All of these factors make morbidity and mortality associated with penetrating injuries low.
(11) The treatment led to decreased spinnbarkeit, arborization and sperum penetration in the cervical mucus.
(12) The penetration coefficient, determined by the surface tension, contact angle and viscosity, is a measure of the ability of a liquid to penetrate into a capillary space, such as interproximal regions, gingival pockets and pores.
(13) The rational surgical methods of treatment in 85 patients with suppurative hepatic echinococcosis penetrating into the abdomen cavity are presented.
(14) This apparent lack of centrosomal staining was not due to problems associated with penetration of the antibody probes, since staining adjacent to and within the centriolar cylinder was observed when phosphoprotein antigens recognized by the MPM-2 antibody were localized.
(15) Both types of oral cleft, cleft palate (CP) and cleft lip with or without CP (CLP), segregate in these families together with lower lip pits or fistulae in an autosomal dominant mode with high penetrance estimated to be K = .89 and .99 by different methods.
(16) Cefuzoname seems to be among the middle ranks of beta-lactam agents as far as penetration rate is concerned; however, when its potent antibacterial activity and broad spectrum are taken into account, the concentrations in CSF in patients with meningitis seem worth examining.
(17) The time of sperm penetration in the mouse eggs, however, was delayed for one-half to one hour when ejaculated sperm were used.
(18) Enzymatic lability does not, however, play as important a role as lipophilicity in the corneal and conjunctival penetration of cycloalkyl and aryl ester prodrugs.
(19) No infection threads were found to penetrate either root hairs or the nodule cells.
(20) Kinetic studies showed that significant inhibition of virus production occurred when the inhibitor was added to infected cultures up to 5 h after virus penetration.