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In the first line of defense, inhaled bacteria are trapped by mucus and are swept toward the pharynx and are swallowed. [1] Bacteria which penetrate the mucous layer are dealt with a second line of defense which includes antimicrobial peptides that are secreted by the surface epithelium of the respiratory tract which kill many strains of ...
The Lines of Torres Vedras were lines of forts and other military defences built in secrecy to defend Lisbon during the Peninsular War.Named after the nearby town of Torres Vedras, they were ordered by Arthur Wellesley, Viscount Wellington, constructed by Colonel Richard Fletcher and his Portuguese workers between November 1809 and September 1810, and used to stop Marshal Masséna's 1810 ...
On 27 May 1940 a Home Defence Executive was formed under General Sir Edmund Ironside, Commander-in-Chief, Home Forces, to organise the defence of Britain. [49] At first defence arrangements were largely static and focused on the coastline (the coastal crust) and, in a classic example of defence in depth , on a series of inland anti-tank 'stop ...
Russian anti-tank obstacles near the horizon, Kherson Oblast, May 2022. Dragon's teeth on the left, Czech hedgehogs on the right In Belgorod Oblast, defensive lines of dragon's teeth were constructed in October 2022 under the supervision of the Wagner Group along the Russia–Ukraine border, intended as a second line of defense alongside trenches and a trained militia in the event the ...
An acid-base diagram for human plasma, showing the effects on the plasma pH when P CO 2 in mmHg or Standard Base Excess (SBE) occur in excess or are deficient in the plasma [23] Acid–base imbalance occurs when a significant insult causes the blood pH to shift out of the normal range (7.32 to 7.42 [ 16 ] ).
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[25] [26] According to the Russian media, it is a second line of defence in case the Ukrainian armed forces try to penetrate the area. [ 27 ] [ 28 ] In a report dated 21 November 2022, the British Ministry of Defence considered that Moscow prioritized the construction of defensive positions on the Svatove–Kreminna line .
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