English for chemists

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Mechanistic studies of the biological efTect of ozone are of particular interest. Vitamin E prolongs the life of rats exposed to ozone. This is based on the observation that the vitamin E-dcpictcd group undergoes a more significant changc than the vitamin E-supplcmcntcd group in the fatty acid

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composition of total lung lipid. Therefore vitamin E, the biological antioxidant, provides protection from ozone toxicity.

Ozone is a particularly destructive substancc to rubber and other elastomers.

Упр. 4. Скажите, узнали ли вы что-нибуаь новое из этого текста. Что именно?
Упр. 5. Разделите текст на тематические части и озаглавьте каж­ дую часть.
Упр. б. Скажите, что говорится в тексте:
1) о получении озона; 2) о том, какой метод получения озона явля­ ется самым распространенным; 3) о том, что собой представляет озон; 4) о том, каково биологическое действие озона.
Упр. 7. Найдите в тексте предложения с описанием строения моле­ кулы озона и переведите их на русский язык.
Scction III
Ex. 1. a) Think of the situations when the following or similar expressions may be used:
so do I, so shall I, so is he, etc.; neither do I, neither shall I, neither is he, etc.
b) Translate the following dialogues into Russian:
1. 1 like reading very much. — So do 1. 2. He goes to the cinema once a week. — So docs she. 3. They have already had breakfast. — So have
wc. 4. 1 don’t like examinations. — Neither do 1.5. He doesn’t go to the theatre very often. — Neither docs his sister. 6. They haven’t visited Mendeleyev’s museum yet. — Neither have wc.
Ex. 2. Translate the scntcnccs into English. Let your fellow students respond to them. Use expressions from exercise 1.
1. Мы знаем много законов химии и физики. 2. Я не помню значе­ ния этого слова. 3. Нам нравится читать текст о великих ученых. 4. Мы узнали много интересного о Менделееве. 5. До сих пор я никогда не слышал о Пристли, б. Он еще не знает, что мы уже работаем в лабо­ ратории. 7. Мне не понравилась последняя лекция по математике.
Ex. 3. Make up scntcnccs or short stories with the following words:
I) oxygen, almost, industry, use, every, field; 2) amount, use, cutting, iron, great, oxygen, steel; 3) oxygen, diseases, amount, ever, use, increasing, treatment; 4) oxy-acctylcnc, application, know, proccss, repair, production, field; 5) gas, characteristic, be, ozone, colourless, odour

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Ex. 4. Give detailed answers to the following questions:
1. What factors speeded the development of the industrial application of oxygen? 2. How is oxygen produced today? 3. Why has the oxy-acctylcnc proccss found wide application? 4. Where else is oxygen used besides in industry?
Ex. 5. Discuss the following topics: 1. Methods of Obtaining Oxygen.

2. 
   The Application of Oxygen.
   
3. 
   The Difference Between Oxygen and Ozone.
   

DO YOU KNOW THAT...

In nature ozone is formed from oxygen during lightning discharges, and at altitudes of 10,000- 30,000 metres through the action of solar ultraviolet radiation. Ozone removes harmful ultraviolet radiation from sunlight and also absorbs the Earth’s own infra-red radiation thus protecting it against cooling. Therefore the ozone belt plays a major role in protecting life on Earth.