(v. t.) To produce, as figures or designs, on mental, glass, or the like, by means of lines or strokes eaten in or corroded by means of some strong acid.
(v. t.) To subject to etching; to draw upon and bite with acid, as a plate of metal.
(v. t.) To sketch; to delineate.
(v. i.) To practice etching; to make etchings.
Example Sentences:
(1) After permeabilization, with attendant partial extraction, the preparation can be fixed, then viewed by either deep-etch replication, or by high-resolution scanning electron microscopy, with structure of interest revealed in deep view.
(2) The freeze-etch technique was used to study the morphology of Treponema refringens (Nichols).
(3) A thorough dental prophylaxis before acid-etching of enamel is often recommended.
(4) The results of the rapid-freeze and deep-etch procedure showed that the ridges observed by the surface replica method consisted of linear arrangements of elliptical particles on the ES face of the plasma membrane.
(5) All the summer deals in graphical, Etch-a-sketch form .
(6) When either predictability or bond strength was considered independently, several bracket systems, coupled with a particular etch time, had either high predictability or high bond strength.
(7) This demineralization was similar to enamel acid etched with 50% phosphoric acid for 2 mn.
(8) This study evaluated the bond strength between glass ionomer cements and laser-etched dentin.
(9) Acid etching smooths and cleans the dentinal surface.
(10) Examination of apposed replicas and deep-etched specimens indicated that at least some of the IMPs extend through the T. pallidum outer membrane and are exposed on the surface of the organism.
(11) Isolated appressed chloroplast membranes, highly enriched in photosystem II (PSII) activity, were examined by freeze-etch electron microscopy.
(12) The technique of freeze-etching for electron microscopy applied to isolated islets of Langerhans has permitted a successful evaluation of emiocytotic events on the cell surface.
(13) The tensile bond strengths of the bonding resin to the etched enamel surfaces were not significantly different.
(14) The etched porcelain laminate veneer is a new conservative treatment that offers a solution to fractured, discolored, and worn anterior teeth.
(15) SEM and TEM examinations suggested that dentinal collagen exposed by the etching but not entangled and impregnated by poly (4-META-co-MMA) easily deteriorated by water during the longer immersion.
(16) The performance of a commercial double-propane-jet freezer (Balzers QFD 101) has been assessed, for rapid freezing of fresh tissues in freeze-etch work.
(17) The purpose of this in vitro study was to determine the tensile bond strengths (TBS) of several orthodontic bonding systems and orthodontic brackets to enamel surfaces exposed to different etching procedures.
(18) We find that freeze-drying is the most reliable and easy method for molecules that withstand distilled water; freeze-etching can be successfully applied to transmembrane proteins (even in the presence of detergents or salt); the glycerol-spray technique provides an excellent alternative to the cryotechniques in particular for studies of single linear molecules.
(19) After acid etching, filtration produced a 32-fold increase in permeation.
(20) On the corresponding PF face of the plasma membrane, linear arrangements of the intramembrane particles (IMPs) of about 8 nm in diameter were observed by both the deep-etch and freeze-fracture methods.
Retch
Definition:
(v. i.) To make an effort to vomit; to strain, as in vomiting.
(v. t. & i.) To care for; to heed; to reck.
Example Sentences:
(1) We have compared the ability of drugs to induce chewing and retching or emesis in squirrel monkeys; such studies are not possible in rodents, which do not vomit.
(2) No dose produced retching, vomiting, diarrhea or other behavioral signs of toxicity.
(3) Nausea was assessed by a patient-completed visual analogue scale and episodes of retching recorded by the patient and an independent observer.
(4) Straining and retching behaviors exhibited by the nerves innervating other thoracic accessory inspiratory muscles (the intercartilagineus, rectus thoracis, scalenus) varied from dog to dog.
(5) In contrast, none of the inspiratory units from the external intercostal nerves exhibited such intense discharges with straining and retching.
(6) Incidence and severity of emesis (none, nausea, retching or vomiting) was assessed during the first 24 hours after operation.
(7) Vomiting, induced by stimulation of the lower thoracic vagi, consisted of a series of synchronous bursts of diaphragmatic and abdominal activity (retching) followed by a prolonged abdominal discharge after the cessation of diaphragmatic activity (expulsion).
(8) Fictive vomiting was defined as a series of large bursts of synchronous activity in the phrenic and abdominal (expiratory) nerves (retching) followed by a burst in which the abdominal activity was prolonged (expulsion).
(9) Nous sommes tous Français (We are all French).” By contrast, Hollande said that Trump’s excesses “make you want to retch” .
(10) Internal intercostal (expiratory) muscles contract out of phase with these muscles during retching and are inactive during expulsion.
(11) When James lay down to sleep, he retched from the smell then ran out the door with his pillow to throw it away, everyone laughing.
(12) 3 Doses of apomorphine that caused a decrease in blood pressure on intravenous injection, had no effect on blood pressure or caused retching accompanied by an increase in blood pressure on intravertebral or intracisternal administration.
(13) All patients were monitored for emetic episodes (vomiting or retching), adverse events, and laboratory safety parameters.
(14) These results suggest that 5-HT3 receptor antagonists are capable of ameliorating radiation-induced retching and vomiting and that, while an important site of their action could be the abdominal vagi, other areas are probably also involved.
(15) We determined (1) gastric emptying rates; (2) the presence and frequency of retching and vomiting; and (3) the effect of zacopride on the performance of a visual discrimination task in nonirradiated subjects.
(16) This was accompanied by a prolonged period of mydriasis and preceded by a short interval of restlessness, licking, retching and emesis.
(17) The discharge patterns during retching were classified into seven types in accordance with the discharge phase in the retching cycle and the discharge frequency.
(18) And if that means staying silent as your subject salivates his way through a truly disgusting account of a threesome, as the male crew laugh along, then you try to hide your desire to retch.
(19) • Pistorius' retching and crying was not feigned , Vorster said: he could not fake pallor .
(20) Therefore, the effects of bilateral abdominal vagotomy and antagonism of 5-HT3 receptors have been investigated on retching and vomiting induced by radiation.