(n.) A sliding piece which either is moved by, or moves against, fluid pressure. It usually consists of a short cylinder fitting within a cylindrical vessel along which it moves, back and forth. It is used in steam engines to receive motion from the steam, and in pumps to transmit motion to a fluid; also for other purposes.
Example Sentences:
(1) The buccal glands of adults of the Southern Hemisphere lamprey Geotria australis consist of a pair of small, bean-shaped, hollow sacs, embedded within the basilaris muscle in the region below the eyes and to either side of the piston cartilage.
(2) Both groups were ventilated with a constant-volume piston ventilator.
(3) To give variations in the peak flow-rate (from pulsatile to intermediate to non-pulsatile), three types of blood pump (piston-bellows, screw, and centrifugal) were applied to dogs.
(4) The players were each to be given a present: Dietmar Hamann (he's German, tee hee hee) got a copy of Mein Kampf, while the Italian Alessandro Pistone, perceived as lacking fight, was given a sheep's heart.
(5) After 4 minutes of ventricular fibrillation CPR was performed with the use of a pneumatic piston compressor.
(6) Sinusoidal volume changes were delivered through a tracheostomy by a piston pump driven by a linear motor.
(7) In groups I-III it is possible to discover whether the piston is too long or too short, whether it is dislocated or has slipped.
(8) Pressures and flows from this pump were compared to a Harvard Apparatus pulsatile piston pump.
(9) The vein graft technique (nine cases) is very much inferior to the piston technique.
(10) Results of partial stapedectomy with the formation of small fenestra and the use of teflon piston prostheses in the period of 1980-1984 are shown.
(11) They suck, by means of a stylet acting as a piston, all components of the muscle cell which develops into a nurse cell, into their oral cavity.
(12) A pneumatically driven piston was used to cause a mechanical stress (10-150 N) on the stabilized tooth crown for 30 s, with instantaneous onset and release.
(13) They recorded an auditory gain in more than half the patients (early: PORP 97%, TORP 73%, piston 52%; plasty transplants of ossicles obtained from subjects who died accidentallyĕ For preserfic Council of the Ministry of Health, Czech Socialist Republic, recommended, based on the clinical tests, the manufacture of silastic prostheses of the middle ear.
(14) It is designed as a positive displacement pump, with blood allowed to collect in a valved cavity from which it is ejected by the reciprocating action of a piston.
(15) The ejection force is wholly produced by the compressed coil spring and is transmitted to the piston in the blood chamber by a rod.
(16) The 4 modes of failure characterizing stem-type component progressive loosening mechanisms consisted of stem pistoning within the acrylic (3.3%), cement-embedded stem pistoning with the femur (5.1%), medial midstem pivot (2.5%), calcar pivot (0.7%) and bending (fatigue) cantilever (3.3%).
(17) In model 1, diaphragmatic descent was treated as if it were a "piston in a cylinder."
(18) Insertion, which takes only a few minutes, is accomplished with a plastic tube and piston device.
(19) The expanding ameroid pushes a piston with a concave extension (makrolon) a maximum of 2 mm against the artery, which is fixed to the metal housing by a teflon band (width: 4 mm, thickness: 0.5 mm).
(20) The novel design of this pump incorporates two rack-mounted pistons, driven into opposing cylinders by a micro-stepping motor.
Ram
Definition:
(n.) The male of the sheep and allied animals. In some parts of England a ram is called a tup.
(n.) Aries, the sign of the zodiac which the sun enters about the 21st of March.
(n.) The constellation Aries, which does not now, as formerly, occupy the sign of the same name.
(n.) An engine of war used for butting or battering.
(n.) In ancient warfare, a long beam suspended by slings in a framework, and used for battering the walls of cities; a battering-ram.
(n.) A heavy steel or iron beak attached to the prow of a steam war vessel for piercing or cutting down the vessel of an enemy; also, a vessel carrying such a beak.
(n.) A hydraulic ram. See under Hydraulic.
(n.) The weight which strikes the blow, in a pile driver, steam hammer, stamp mill, or the like.
(n.) The plunger of a hydraulic press.
(v. t.) To butt or strike against; to drive a ram against or through; to thrust or drive with violence; to force in; to drive together; to cram; as, to ram an enemy's vessel; to ram piles, cartridges, etc.
(v. t.) To fill or compact by pounding or driving.
Example Sentences:
(1) They broke in with a battering ram: an armoured vehicle known as a Bearcat.
(2) Intact rams exhibited GH secretory episodes of greater (P less than 0.01) amplitude than did castrated lambs.
(3) DES implantation increased the body weight of the ram by 10.4% and caused no significant change in total body water, body ash, or total muscle mass.
(4) The effect of scrotal mange (Chorioptes bovis) on semen quality was assessed in a flock of rams during an outbreak of chorioptic mange and in rams with experimentally induced chorioptic mange.
(5) Castrated rams did not show this increase, with or without supplementary testosterone.
(6) Additional evaluation of the recoverability of H ovis and A seminis from the preputial cavity of rams from birth to 1 year of age indicated that the isolation rate from rams and predominance of the organisms in the preputial cavity differed greatly over this age period.
(7) Four rams each were either hemicastrated (HC) or left intact (INT) and blood samples were collected over a 2-wk period.
(8) The infection probably affected all sex and age classes, but field surveys of live animals and mortality suggested that mature rams died disproportionately.
(9) The ability of melatonin to influence LH pulse frequency in entire and castrated rams indicated that an effect of melatonin on the hypothalamic pulse generator is independent of testicular steroids.
(10) In addition, there was a marginally significant (P less than 0.1) relationship between prolactin secretion in the castrate ram and the stage of testicular activity in the entire rams with elevated levels associated with regressed activity.
(11) The effect of alpha-chlorohydrin on the metabolism of glycolytic and tricarboxylate-cycle substrates by ram spermatozoa was investigated.
(12) In the present study the influence of the period of the light cycle on variation in testicular weight in the ram was investigated.
(13) The androgenized ewes showed poorer oestrous responses to each hormone although rams showed interest in the ewes.
(14) Ram biceps femoris weights at market were greater than those of wethers (P less than .05).
(15) The effect of naloxone administration on the LH-RH secretion in hypophyseal portal blood and LH secretion in peripheral blood was studied in four short term castrated rams (between 2 to 4 days after castration).
(16) In a trial with rams, application of polyethylene powder (PE) as a marker for determination of feed passage rate through the digestive tract and three methods of its determination in feed and feces were tested.
(17) Macrophages and various subtypes of lymphocytes were identified in the ram and the rat testis by using cytochemical and immunocytochemical techniques.
(18) The tail(s) of the epididymis was the most frequent site of lesion development in the mature rams (86.4%).
(19) The interactions of ram spermatozoa with exogenous liposomes of varying composition were studied, with the aim of examining the mechanisms by which some lipids protect against cold-induced damage during cryostorage.
(20) Who hasn’t moved house and chucked a load of old stuff just because they can’t face ramming it back into the Ikea chest of drawers?