(a.) Not permeable; not permitting passage, as of a fluid. through its substance; impervious; impenetrable; as, India rubber is impermeable to water and to air.
Example Sentences:
(1) On the other hand, changing pH on only one side by addition of an impermeant buffer fails to induce any change in n. At the single-channel level, pH had an effect both on the unitary conductance, doubling it in going from pH 4.5 to 8.2, as well as on the fraction of time the channels stay open, F(v).
(2) EAI can penetrate a membrane, whereas IAI is membrane impermeant.
(3) Both the internal and external solutions were prepared with impermeant anions.
(4) Replacement of Cl-o with other impermeant anions, such as gluconate and methylsulphate, had a similar action on contractile activity as for Ise-replacement.
(5) When sulfhydryl groups present at the cell surface were blocked with cell-impermeant sulfhydryl reagent, the initial phase of disulfide cleavage was inhibited, indicating that cleavage began at the cell surface.
(6) To explain the opposite effects of GTP in the absence and presence of oxalate, it is proposed that GTP activates a transmembrane conveyance of Ca2+ between oxalate-permeable and -impermeable compartments.
(7) Measurement of (140)La uptake by the living skin shows that lanthanum moves across the external surface of the skin readily, into and out of a compartment that has a limited capacity and is bounded on its internal side by a barrier impermeable to lanthanum.
(8) When permeant anions in the bath (Cl-) were replaced with relatively impermeant anions (gluconate, MOPS, propionate, or Hepes), the Po vs. voltage relationship was shifted by approximately -35 mV.
(9) Currents through both the voltage-activated potassium channels, IK,V, and the calcium-activated potassium channels, IK,Ca, can be blocked by the membrane-impermeant K channel blocker tetraethylammonium (TEA).
(10) The outcome is a belief that the Earth is being slowly strangled by a gaudy coat of impermeable plastic waste that collects in great floating islands in the world's oceans; clogs up canals and rivers; and is swallowed by animals, birds and sea creatures.
(11) Local hypoxia due to a diffusion block by the impermeable pericapillary cuffs, partially due to a reduction of capillaries in the superficial layers.
(12) The connective hyperpolarizes in the propionate saline, whereas the abdominal region undergoes the transient depolarization that is expected when a permeant anion (Cl) is replaced with an impermeant one (propionate).
(13) In forest, removal of olfactory substances from the human skin, by vigorous washing and application of petroleum jelly, or by wearing impermeable clothing, greatly reduced the numbers of flies attracted.
(14) By the use of double-chamber tissue culture flasks, with the 2 cell populations separated by a cell impermeable membrane, it was found that T-T interaction does not require cell contact and is thus mediated by factor(s).
(15) This discrepancy could be ascribed to impermeability, as E. coli cells with modified permeability show greater sensitivity to minosaminomycin.
(16) The perinephric membrane in the Lepidoptera is impermeable to the dyes.
(17) The relatively membrane-impermeant pyridoxal phosphate labels all proteins of the intact myelin except basic protein.
(18) Monobromobimane and dibromobimane are effective on intact cells while red cell membranes may be impermeable to the positively charged monobromotrimethylammoniobimane, the latter being effective only on lysed cells.
(19) This failure was shown to be due to the impermeability of mycobacteria to these drugs by use of "membrane-active" agents along with the antibiotics in growth inhibition studies.
(20) Chloride dependence was assessed by replacing chloride with the impermeant anion gluconate, or by addition of the anion transport blocker 4,4'-diisothiocyanatostilbene-2,2'-disulfonic acid (DIDS).
Waterproof
Definition:
(a.) Proof against penetration or permeation by water; impervious to water; as, a waterproof garment; a waterproof roof.
(n.) A substance or preparation for rendering cloth, leather, etc., impervious to water.
(n.) Cloth made waterproof, or any article made of such cloth, or of other waterproof material, as rubber; esp., an outer garment made of such material.
(v. t.) To render impervious to water, as cloth, leather, etc.
Example Sentences:
(1) It is concluded that the thickness of the waterproofing sheath is not a very sensitive variable, assuming the thickness is between 0.5 and 2.0 mm.
(2) Cryoscopic analysis of frozen sections provided indirect evidence for the presence of a waterproof layer limiting evaporation from living epithelial cells in dormant land snails.
(3) In the case of Airbnb, it’s facilitating the buy-to-let marketplace, and lets people like me – who have the assets to sweat – make a profit to cover the cost of more assets, which can then be priced accordingly to cover their own bricks and mortar (or, in my case, fuel and waterproof blacking).
(4) The BBC sessions version of Hey is one of my favourite ever songs and to hear that, as the sun was trying to break through, almost made me forget the fact I'd lost my waterproof and was walking about sopping wet in a glorified bin-liner.
(5) In the meantime, clinicians should be aware of this problem and may choose to prevent these errors by wrapping the connection with waterproof tape.
(6) He issues instructions home for new boots, a waterproof sheet, a lamp, field glasses and a camera.
(7) This material support involved allowing an acquaintance to stay in his apartment for two weeks – an acquaintance who later delivered raincoats and waterproof socks to al-Qaida.
(8) So while in Japan you can easily stumble across a remote-control tissue box or a battery-operated planetarium for your bathroom (by which I mean a waterproof Saturn-shaped orb that floats in the bath and projects the entire visible universe onto the ceiling), the sense of surrounding novelty has diminished.
(9) Below this is a very thin waterproof layer of wax and 'sclerotin' continuous with the contents of the tubular filaments, which is readily removed by adsorptive dusts.
(10) British mountaineer Kenton Cool was sitting in the check-in lounge at Gatwick airport last Thursday with a locked waterproof box that, if all goes according to plan, will not leave his side until he reaches Everest's summit for a 10th time this spring.
(11) He has kitted us out in our super-modern waterproof gear that makes us look like a family of Scandinavian traffic cops, but about which even the teenager doesn't complain.
(12) Let's hope he's not brought his brolly along this time, but invested in a nice waterproof jacket instead, a mac maybe.
(13) Waterproof footwear and clothing should be worn to minimize skin contact.
(14) Make sure you take a waterproof bivvy for your sleeping bag, plenty of warm layers and hot food and drink.
(15) It is also waterproof and would be perfect to use in hydrogen reservoirs.
(16) After struggling into a dry suit, I grabbed a handful of waterproof gear bags and headed down to the beach.
(17) Motorola is promising “all-day battery life” for the Moto E, and has fitted it with features such as Corning’s scratch-resistant Gorilla Glass 3 and P2i’s waterproof nano coating (which makes the phone splash-proof) that are found only on smartphones costing twice as much as the Moto E. As with the Moto G, Motorola will guarantee an upgrade to the next version of Android for the Moto E, something that cannot be said for most of the other smartphones in its class.
(18) Bedding has been constructed with a vapour-permeable waterproof fabric that is impermeable to house dust mite antigen (Der p1).
(19) Patrick Kingsley (@PatrickKingsley) Top priorities before the trip to Europe: change lira into euros; buy a lifejacket; waterproof your electricals.
(20) Try a waterproof picnic blanket, much cheaper and easy to keep clean.