(n.) A defensive covering for the head. See Casque, Headpiece, Morion, Sallet, and Illust. of Beaver.
(n.) The representation of a helmet over shields or coats of arms, denoting gradations of rank by modifications of form.
(n.) A helmet-shaped hat, made of cork, felt, metal, or other suitable material, worn as part of the uniform of soldiers, firemen, etc., also worn in hot countries as a protection from the heat of the sun.
(n.) That which resembles a helmet in form, position, etc.
(n.) The upper part of a retort.
(n.) The hood-formed upper sepal or petal of some flowers, as of the monkshood or the snapdragon.
(n.) A naked shield or protuberance on the top or fore part of the head of a bird.
Example Sentences:
(1) It follows that he would not allow a biker to give evidence while wearing a crash helmet with the visor down.
(2) The design of motor cycle helmets has been changing over the years and at the present time there are two basic types in popular use: "full-face" and "jet" helmets.
(3) Ultimately, we hope such a program will increase helmet use and consequently reduce morbidity and mortality from head injury in Indiana's children.
(4) The study showed surprising results: in the majority of cases, the helmet does not protect the wearer, but instead intensifies the damage caused by the bullet.
(5) 9.18am GMT Johnson says he does not wear his helmet all the time when he cycles.
(6) The front door is open; outside, a line of police carrying riot helmets files past.
(7) Fifty-seven percent of riders were wearing helmets during the mishap.
(8) The protective performance of the helmet shells, impact absorbing liners, and retention systems were evaluated, and the severity of the impacts sustained by the helmets was simulated in the test laboratory.
(9) Members of the elite police squad wearing helmets came running out of the building and a police union representative at the cordon around the area shouted: "He's dead, he's dead."
(10) Ten subjects took part in the trial in a tropical environment by wearing helmets repeatedly (6 h a day) for one month.
(11) Here's one entry: 1995: The government is full of jack-booted thugs in bucket helmets.
(12) The analysis of the results allowed a conclusion that the latter are concerned with a discoupling effect of substances on oxidative phosphorylation in mitochondria of helmets and their host.
(13) To better understand motion in the cervical spine related to helmet wearing and removal, normal volunteers underwent videotaped fluoroscopy during helmet removal and lateral spine X-rays in various positions.
(14) We describe the mechanics of a multifaceted campaign undertaken to alter this situation, involving a coalition of health, bicycle, and helmet industry organizations.
(15) Japan's prime minister, Shinzo Abe, wearing a red helmet, during a tour of the Fukushima Daiichi plant.
(16) This article presents 1990 self-reported data from U.S. students in grades 9-12 regarding the prevalence of three behaviors that reduce the risk for injuries from motor-vehicle crashes-safety-belt use, motorcycle-helmet use, and bicycle-helmet use.
(17) The helmet usage was analyzed in two clinical study populations including 200 injured from the county of Västerbotten from two periods 1979-1980 and 1985-86.
(18) These data support the need for both increased public education regarding helmet use and mandatory helmet use legislation.
(19) The relative frequency of serious head injury was highest for drivers not wearing helmets who were involved in collisions at low or high speeds.
(20) Women's lacrosse is potentially hazardous because, unlike men's lacrosse, helmets and face masks are not required.
Pump
Definition:
(n.) A low shoe with a thin sole.
(n.) An hydraulic machine, variously constructed, for raising or transferring fluids, consisting essentially of a moving piece or piston working in a hollow cylinder or other cavity, with valves properly placed for admitting or retaining the fluid as it is drawn or driven through them by the action of the piston.
(v. t.) To raise with a pump, as water or other liquid.
(v. t.) To draw water, or the like, from; to from water by means of a pump; as, they pumped the well dry; to pump a ship.
(v. t.) Figuratively, to draw out or obtain, as secrets or money, by persistent questioning or plying; to question or ply persistently in order to elicit something, as information, money, etc.
(v. i.) To work, or raise water, a pump.
Example Sentences:
(1) An inverse relationship between the pumping capacity of the heart and vascular resistance was confirmed at different stages of examination and treatment of the patients.
(2) In contrast with oligodendrocytes, [Cl-]i in astrocytes is significantly increased (from 20 to 40 mM) above the equilibrium distribution owing to the activity of an inward directed Cl- pump; this suggests a different mechanism of K+ uptake in these cells.
(3) This is basically a large tank (the bigger the better) that collects rain from the house guttering and pumps it into the home, to be used for flushing the loo.
(4) It is concluded that a Na-H antiport system in vascular smooth muscle regulates Na influx rate, contributes to intracellular pH regulation and influences basal levels of Na,K-pump activity.
(5) All conventional injection and insulin pump regimens are supported.
(6) An electrogenic sodium-potassium pump appears to contribute materially to the steady-state potential and to certain of the transient potential responses of vascular smooth muscle.
(7) Cardiac pump function is not affected, even in patients with ventricular dysfunction or heart failure, in whom chronic oral administration of the drug is well tolerated.
(8) The larger accumulation of Mn2+ than of Sr2+ in Saccharomyces cerevisiae is ascribed to the operation of a specific extrusion pump, presumably a Ca2+ pump, which has a higher affinity for Sr2+ than for Mn2+.
(9) Sadler shook her head again when Cameron repeated the much-used statistic that enough water to fill Wembley Stadium three times was being pumped from the Levels each day.
(10) A reduction of salmonellae during the passage of the pump and pressure conduit-pipe, combining east- and west-side of Kiel fjord, could be seen.
(11) and respirated with a pneumatic respiration pump and the parameters blood pressure, pH and blood gases (pO2, pCO2) were continuously recorded.
(12) The pump function of the heart (oxygen debt dynamics), the anaerobic threshold (complex of gas analytical indices), and the efficacy of blood flow in lesser circulation (O2 consumption plateau) were appraised.
(13) To investigate endogenous cardiac glycoside-like compounds in plasma and their ability to inhibit the sodium pump, digoxin-like immunoreactivity [digoxin-like immunoreactive substance(s), DLIS] and 86Rb uptake by erythrocytes were measured in plasma extracts from normal adults, hypertensive adults and neonates.
(14) A compensator connected to the section consisting of the pump-main line-operating member and including a pneumatic resistance and a flaxid non-elastic container enables it in combination with the feedback to maintain through the volumetric displacement of the gas, or changing the pump diaphragm position, the stability of the gas volume in the pneumatic transmission element of the assisted circulation apparatus.
(15) Interpreted in term of compartmental analysis, these observations suggest that a) the frog skin epithelium contains 2 separated but communicating compartments having different degrees of accessibility from outside; b) only that compartment filling at a fast rate (0.5 min) is involved in the transepithelial Na transport; c) the other one, filling at a rate of 4 to 7 min, is resplenished only under conditions where the basal pump system has a reduced activity.
(16) Despite numerous attempts there have been only a few chemicals identified that stimulate the fluid pump, but the level of stimulation has been relatively small and short-lived.
(17) The insulin-induced activation of the Na+-K+ pump leads to decreased intracellular Na+ concentration and hyperpolarization, but none of these events can account for the concomitant activation of the glucose transport system.
(18) A pressure sensor in the patient line prevents excessive inflow and outflow pressures by stopping the inflow or outflow pump respectively.
(19) This was overcome by using a continuous subcutaneous infusion pump which also enabled the effective daily dosage to be reduced and thereby adverse reactions to be avoided.
(20) A new centrifugal pump (Sarns), originally designed for ventricular assist, was successfully used in two patients during repair of traumatic pseudoaneurysm of the descending thoracic aorta.