Нефтеперерабатывающая промышленность

Недавнее замечательное открытие уплощенного слоя пыли вокруг звезды 0 Живописца, по-видимому, подтверждает общую картину образования звезд и планет.

По мере того как астрофизики делали все более реалистические предположения относительно исходных газопылевых облаков, возникала все более ясная картина процесса звездообразования. В дальнейших исследованиях я попытаюсь развить термодинамические модели полностью несимметричных облаков. До сих пор такие модели использовались только для первой квазиравновесной стадии — образования первого ядра. Кроме того, будет проведен анализ второй стадии динамического коллапса. Я считаю, что после образования первого ядра дальнейшей фрагментации не происходит, и протозвезда сжимается до звездной плотности. Однако для определенного ответа нужен строгий расчет, а на это уйдет еще несколько лет.

ЯНВАРЬ 1935 г. Пластмассы начали использовать еще 66 лет назад, когда Дж. Хьят в поисках заменителя слоновой кости для изготовления бильярдных шаров изобрел целлулоид — нитроцеллюлозный продукт. Однако ни о самих пластических массах, ни об их промышленном производстве ничего не сообщалось вплоть до 1907 г., пока д-р J1. Бакеленд не открыл способ контроля за реакцией фенола (карболовой кислоты) с формальдегидом для получения синтетической смолы, известной как бакелит. В течение последних 20 лет объем производства пластмасс постоянно увеличивался. В настоящее время, после нескольких лет исключительно высоких темпов роста, материалов этого вида производится ежегодно на сумму примерно 50 млн. долл. Судя по тому, насколько широко сейчас применяются пластмассы, можно подумать, что уже не осталось областей их возможного использования. На самом деле предел здесь не достигнут.

В нефтеперерабатывающей промышленности предвидятся большие изменения. Доминирующему положению пенсильванской нефти угрожает опасность. Теперь из низкосортной нефти можно получать высококачественные сорта смазочных материалов, что еще год назад было невозможно. В связи с разработкой процесса сольвентной очистки (в котором в качестве растворителя используется жидкий пропан) нефтяные фирмы западных штатов обещают значительно увеличить добычу нефти в Калифорнии, которая отличается большим содержанием парафина.

 

 

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