(n.) A carpentry obstruction, stockade, or other obstacle made in a passage in order to stop an enemy.
(n.) A fortress or fortified town, on the frontier of a country, commanding an avenue of approach.
(n.) A fence or railing to mark the limits of a place, or to keep back a crowd.
(n.) An any obstruction; anything which hinders approach or attack.
(n.) Any limit or boundary; a line of separation.
Example Sentences:
(1) Here we have asked whether protection from blood-borne antigens afforded by the blood-brain barrier is related to the lack of MHC expression.
(2) We conclude that chloramphenicol resistance encoded by Tn1696 is due to a permeability barrier and hypothesize that the gene from P. aeruginosa may share a common ancestral origin with these genes from other gram-negative organisms.
(3) The findings clearly reveal that only the Sertoli-Sertoli junctional site forms a restrictive barrier.
(4) This suggests that a physiological mechanism exists which can increase the barrier pressure to gastrooesophageal reflux during periods of active secretion of the stomach, as occurs in digestion.
(5) Comparison of the 50% binding concentrations of the compounds for the various PBPs of the five strains with their antibacterial activity indicates that the different antibiotics are excluded to a greater or lesser degree by the outer membrane permeability barrier and that the exclusion is most pronounced in P. aeruginosa.
(6) Preservation of dopaminergic and H1 neurotransmission, probably within the blood barrier, is needed to allow the neuroendocrine transduction of cholinergic inputs, whereas the role of 5-HT neurotransmission remains uncertain.
(7) Their levels in urine are a useful indicator of the integrity of membrane barriers of the kidney glomerular capillary wall.
(8) The IgG index (formula: see text) corrects for the influence of serum protein abnormalities as well as a bloodbrain barrier damage and is, therefore, a better measure for the presence of an IgG elevation in CSF due to IgG synthesis, when compared with other IgG quotients commonly used.
(9) In the far east is the arid, depressed country leading down Hell’s Canyon, which bottoms out at the Snake River, which the wolves crossed when they moved from Idaho, and which they now treat more as a crosswalk than a barrier.
(10) No signs of the blood-brain barrier disruption were observed.
(11) Although no anatomical 'barrier' has been described, it has been suggested that the gel mucus and epithelial phospholipids are constituents.
(12) Despite their wide dispersion, Vmax and the stereological determinations correlated strongly at 2 mo of age, confirming that Vmax is a robust indicator of the surface area of the air-blood barrier.
(13) Developmental changes are delineated, with particular reference to recent work on the ovine blood-brain barrier.
(14) Features of barrier island physiography and ecology were studied relative to selective bait deployment and site biosecurity.
(15) This study sought to determine if and why barriers to the over-the-counter purchase of syringes in the St. Louis metropolitan area might exist, given that no ordinance prohibits such a sale there.
(16) It is suggested that the intercalated disc functioned as a barrier to the freezing process.
(17) To explain some of these results a theoretical model is presented to demonstrate that while short circuiting can block the passive ionic movement, it will cause an increase in the energy consumption of the system and introduce certain important changes in the ionic barriers and e.m.fs.
(18) Our results show that paramagnetic enhancement with T1-weighted imaging adds specificity and enables rapid assessment of abnormalities of the blood-brain barrier.
(19) A functional impairment of the amino acid transport systems at the level of the blood-brain barrier seems to play a crucial role in causing deleterious modifications of the synaptic neurotransmission in the central nervous system.
(20) There was a significant correlation between the lesion index and the PD reduction, although the integrity of the resting gastric mucosal barrier remained unaltered.
Fence
Definition:
(n.) That which fends off attack or danger; a defense; a protection; a cover; security; shield.
(n.) An inclosure about a field or other space, or about any object; especially, an inclosing structure of wood, iron, or other material, intended to prevent intrusion from without or straying from within.
(n.) A projection on the bolt, which passes through the tumbler gates in locking and unlocking.
(n.) Self-defense by the use of the sword; the art and practice of fencing and sword play; hence, skill in debate and repartee. See Fencing.
(n.) A receiver of stolen goods, or a place where they are received.
(v. t.) To fend off danger from; to give security to; to protect; to guard.
(v. t.) To inclose with a fence or other protection; to secure by an inclosure.
(v. i.) To make a defense; to guard one's self of anything, as against an attack; to give protection or security, as by a fence.
(v. i.) To practice the art of attack and defense with the sword or with the foil, esp. with the smallsword, using the point only.
(v. i.) Hence, to fight or dispute in the manner of fencers, that is, by thrusting, guarding, parrying, etc.
Example Sentences:
(1) The identifiable causes of child drowning are absence of a safety barrier or fence around the water hazard, non-supervision of a child, a parental "vulnerable period", an inadequate safety barrier, and tempting objects in or on the water.
(2) Down the road another group of protesters gathered outside the chain-link fence surrounding the Marriott's perimeter.
(3) The top of the fence can also be manipulated in certain ways such as including curvature outward at the top of the fence to make scaling it much more difficult for most.” Some critics, including Washington DC congressional delegate Eleanor Holmes Norton, have warned against excessive fortification, but the report argues: “We recognise all the competing considerations that may go into questions regarding the fence, but believe that protection of the President and the White House must be the higher priority.” “Every additional second of response time provided by a fence that is more difficult to climb makes a material difference in ensuring the President’s safety and protecting the symbol that is the White House.” The panel also urges that a new head of secret service, to replace ousted head Julia Pierson, be brought in from outside the agency, ensuring it is better staffed and trained in future.
(4) In an attempt to show the public and cabinet colleagues that money being ring-fenced from Treasury cuts will be spent wisely, Mitchell said he wanted to know whether money spent at agencies such as the World Bank and the UN matched up to the government's anti-poverty objectives and delivered real benefits.
(5) These findings indicate a need for Los Angeles County to address the problem of drownings among infants and toddlers in private swimming pools and to investigate the failure of regulations requiring fencing of swimming pools to prevent these deaths.
(6) In February last year the BBC was forced to apologise to the Mexican ambassador after a joke made by the three presenters that the nation's cars were like the people "lazy, feckless, flatulent, overweight, leaning against a fence asleep looking at a cactus with a blanket with a hole in the middle on as a coat".
(7) Ring-fencing of health, education and development budgets means other departments face an average cut of 11.6% over the next five years, with the steepest cuts expected at the start of the parliament.
(8) "You have very difficult and emotional arguments on both sides of the fence.
(9) A requirement for pool fencing is the most promising such strategy and could be implemented soon.
(10) If the EBU wants to engage seriously with a country such as Azerbaijan, it has to get off the fence.
(11) Burnout And if you’re more into chat than science, I can tell you over the garden fence that it works.
(12) The movement pattern of épée fencing results in an asymmetry of the body.
(13) Sophie Jackson, of Museum of London Archaeology , said: "The waterlogged conditions left by the Walbrook stream have given us layer upon layer of Roman timber buildings, fences and yards, all beautifully preserved and containing amazing personal items, clothes and even documents – all of which will transform our understanding of the people of Roman London."
(14) Yet here comes Bloomberg — a former Democrat turned Republican turned independent who many thought might run for president himself on a third-party ticket — throwing his support behind Obama , citing climate as the proximate reason for his hop off the fence: Our climate is changing.
(15) With a population of only 3.3 million, it is hard for politicians and activists not to know personally those on the other side of the ideological fence.
(16) Other robots in the Boston Dynamics stable include Petman, a robot that tests humanoid chemical protective clothing; the wheeled SandFlea robot that can leap small buildings; a small six-legged robot capable of traversing rough terrain called RHex; and the RiSE robot capable of climbing vertical walls, trees and fences using feet with micro-claws.
(17) These results indicate overall productivity estimates of 51 and 120 kg of weaner calf per cow per year and 86 and 188 kg of 18-month old calf per cow per year for the cattle post and fenced ranch respectively.
(18) The claim has stunned a community who knew him not as a pale spectre in Taliban videos but as the tall, affable young man who served coffee and deftly fended off jokes about Billy Elliot – he did ballet along with karate, fencing, paragliding and mountain biking.
(19) On one occasion, she told the court, she had been seized at a beauty spot near her home where she was walking her dog, raped and left tied to a fence.
(20) Samuel Wurzelbacher, who became famous during the 2008 election as “Joe the Plumber” after he had a heated discussion with Obama on the campaign trail, was championed by presidential nominee John McCain but later made contentious remarks such as a call to “put a damn fence on the border going to Mexico and start shooting”.