2018-01-21
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Influenza is a disease of the breathing system, it is commonly known as the flu. It is caused by a virus that is passed from one person to another. The flu causes high body temperature, muscle pain, and difficulty in breathing, coughing and weakness. It is most common during the winter months. The flu isn’t usually a serious disease, it generally disappears in a week. But the flu can have serious effects and it can lead to other diseases that can kill. The flu is especially dangerous for people with weakened immune system.
Last year the US government approved the medicine Tanaviar as a treatment for the flu. The study showed that the medicine helps people recover from the disease about one day earlier that those who get no treatment. It blocks the action of a protein on the virus that permits it to spread from cell to cell. So the drug stops the virus from growing. The Food and Drug Administration says the flu pill taken every day can help prevent people from getting the disease. Drug Administration says the flu pill taken every day can help prevent people from getting the disease.
Scientists did several studies on the new drug. One study of the drug involved a group of old people who lived together in a nursing home. Less than one percent of who took the pill got influenza. More than four percent of those who took an inactive substance suffered from the disease. Another study involved families in which someone was already suffering 12 percent of those who took the inactive substance suffered the disease. Medical experts say people who lived together should take one pill a day for seven days in a house has the flu.
Translate the «Железобетон» into English in written form.
Железобетон – это вид бетона, полученного в результате сочетания бетона и стали.
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В настоящее время железобетон нашел широкое применение во всех областях строительства и стал основным строительным материалом. Из железобетона возводят промышленные сооружения. Различные гражданские здания и жилые дома. Железобетон широко применяют в гидротехническом строительстве при постройке плотин, шлюзов, доков, набережных. Он является незаменимым материалом при строительстве тепловых и атомных электростанций, аэродромов, шоссейных дорог, мостов и т.д.
На железобетонные конструкции расходуют примерно в два раза меньше стали, чем на металлические. В то же время железобетонные конструкции более огнестойки и долговечны.
Применение железобетона в строительстве дает возможность экономить сотни тысяч тонн стали, поэтому замена металла железобетоном имеет большое народнохозяйственное значение.
