(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.
Rampart
Definition:
(n.) That which fortifies and defends from assault; that which secures safety; a defense or bulwark.
(n.) A broad embankment of earth round a place, upon which the parapet is raised. It forms the substratum of every permanent fortification.
(v. t.) To surround or protect with, or as with, a rampart or ramparts.
Example Sentences:
(1) We bartered for almonds and olives in the market, where there wasn't another tourist to be seen, and sat on the ramparts, watching the sun fall away beyond the horizon.
(2) The turbine housings, which are half-complete, resemble the jagged ramparts of a fort.
(3) How Google's antitrust headache began not from castle ramparts Read more An investigation by the Guardian into Google’s multifaceted lobbying campaign in Europe has uncovered fresh details of its activities and methods.
(4) The find is a few miles from Bredon hill, which has been a scene of human activity down the ages and still boasts the earthen ramparts of an iron age hill fort.
(5) Here, Main, Sidney Bracken, 65, Paul Radley, 52, and David Robinson, 63, are cooking an outdoor breakfast, after hanging a huge banner around the ramparts of the fort.
(6) There have been many initiatives, reports and government level strategies in recent years but few, perhaps none, have hammered at the ramparts of care for learning disabled adults with the force of BBC's Panorama expose Undercover Care: The Abuse Exposed .
(7) Analysis of the errors showed that one of the focal problems of the Gilbert-McKern system was the difficulty in judging whether the ventral rampart was building up or breaking down.
(8) They have gone, instead, for the candidate who seems best placed to appeal beyond the Republican ramparts, to swing voters and independents, just as they did in 2008 by choosing John McCain.
(9) The ridged area, where sweat ducts are distributed, is constructed of grooves and ramparts.
(10) O’er the ramparts we watched, were so gallantly streaming” – what does it mean?
(11) Things soon get serious with a tough climb onto Shoulsbarrow Common, beneath the ramparts of an iron-age hill fort.
(12) Voters, buffeted by unemployment, dismayed by immigration, scared of terrorism, and angry at growing inequality, crave the alleged certainties of a past where the strong nation state was a rampart for its citizens.
(13) Adults £85 per day, children (aged 13-17) £60 per day, overnight kayak camping expeditions an additional £15 per person per night Eilean Donan, Dornie Photograph: Alamy Clamber around the ramparts and explore the dimly lit nooks and crannies of one of the most romantic castles in Scotland.
(14) 2 Go through the gate on the right and follow the surfaced path through the ancient ramparts of the hill fort to the summit trig point.
(15) "They seek the secret of the Grail," gasps carbuncular nobleman Bertrand, as swarms of rhubarbing crusaders prepare to storm his ramparts.
(16) They have also used their nine-month siege of the north to dig in, creating elaborate defences, including tunnels and ramparts using construction equipment abandoned by fleeing construction crews.
(17) By the break of dawn the citadel's ramparts had been draped with banners proclaiming: "Peoples of Europe rise up."
(18) Offshore, a recognisably Viking kingdom boasts a fleet of longships; Westeros itself, like dark ages England, was once a heptarchy, a realm of seven kingdoms; the massive rampart of ice which guards its northernmost frontier is recognisably inspired by Hadrian's wall.
(19) But his passion for conservation isn’t confined to the 80 acres of streets and historic buildings within the fort’s Dutch-built ramparts.
(20) On this larger project, a stronger more robust New Orleans, the progress that you have made is remarkable.” Leo Watermeier, a longtime resident of North Rampart Street in the French Quarter and community activist, told the Guardian in an email that “I agree we’re moving forward.” “The influx of new people after Katrina has brought a new energy, that’s both pushing for needed changes and respectful of our traditions,” Watermeier said.