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Playboy (2008 No.05) Venezuela |
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Категория: Домоводство, досуг » Любовь, эротика |
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Издательство: Playboy
Год издания: 2008
Количество страниц: 108
Язык: english
Формат: PDF
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Playboy (2008 No.05) Venezuela |
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Kookaburra Historic Aircraft Books. Series 1, no.3: Warplanes of the R.A.A.F. Fighters 1921-69 |
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Категория: Военное дело » Военная техника » Самолеты |
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Автор: Publishers Kookaburra
Издательство: Kookaburra Technical Publicati
Год издания: 1969
Количество страниц: 28
Язык: english
Формат: PDF (scan)
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A series of full-page photograph with captions. |
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Purification of Laboratory Chemicals |
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Категория: Естественные науки » Химические науки |
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Автор: Ed. by W.L.F. Almarego et cetera
Издательство: BUTTERWORTH &HEINEMANN
Год издания: 2002
isbn: 0-7506-7571-3
Количество страниц: 629
Язык: english
Формат: PDF
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Although commercially available laboratory chemicals are usually satisfactory, as supplied, for most purposes in scientific and technological work, it is also true that for many applications further purification is essential.
With this thought in mind, the present volume sets out, firstly, to tabulate methods, taken from the literature, for purifying some thousands of individual commercially available chemicals. To help in applying this information, two chapters describe the more common processes currently used for purification in chemical laboratories and give fuller details of new methods which appear likely to find increasing application for the same purpose. Finally, for dealing with substances not separately listed, a chapter is included setting out the usual methods for purifying specific classes of compounds.
To keep this book to a convenient size, and bearing in mind that its most likely users will be laboratory-trained, we have omitted manipulative details with which they can be assumed to be familiar, and also detailed theoretical discussion. Both are readily available elsewhere, for example in Vogel's very useful book Practical Organic Chemistry (Longmans, London, 3rd ed., 19-56), or Fieser's Experiments in Organic Chemistry (Heath, Boston, 3rd ed, 1957).
For the same reason, only limited mention is made of the kinds of impurities likely to be present, and of the tests for detecting them. In many cases, this information can be obtained readily from existing monographs.
By its nature, the present treatment is not exhaustive, nor do we claim that any of the methods taken from the literature are the best possible. Nevertheless, we feel that the information contained in this book is likely to be helpful to a wide range of
laboratory workers, including physical and inorganic chemists, research students, biochemists, and biologists. We hope that it will also be of use, although perhaps to only a limited extent, to experienced organic chemists.
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Атлас спектров криминалистических подразделений МВД СССР |
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Категория: Естественные науки » Химические науки |
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Автор: Под ред. чл.-корр. В.А.Коптюга
Издательство: Новосибирский ин-т орг. хим.
Год издания: 1975
Количество страниц: 136
Язык: русский
Формат: PDF
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В атлас включены ИК-, УФ-, КР- и ПМР-спектры растворителей, наиболее часто используемых при физико-химических исследованиях.
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Schiffer Military History Book: The Tiger I & Tiger II Profile |
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Категория: Военное дело » Военная техника » Танки, БТР |
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Автор: R. Ehninger
Издательство: Schiffer Publishing
Год издания: 1996
isbn: 0887409253
Количество страниц: 39
Язык: english
Формат: PDF (scan)
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The famed German panzers of World War II in profile format including photographs, color schemes, and drawings. |
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Чудное мгновенье. Любовная лирика русских поэтов. В 2-х томах |
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Категория: Гуманитарные науки » Языкознание » Литература |
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Автор: Л.Озеров
Издательство: Художественная литература
Год издания: 1988
Количество страниц: 524
Язык: русский
Формат: PDF
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В первую книгу включены подборки шедевров лирических откровений классиков поэзии А.Пушкина, М.Лермонтова, Е.Баратынского и отдельные стихотворения менее известных поэтов, многие афористические строки которых давно уже стали "крылатыми словами".
Во второй том сборника "Чудное мгновенье" входят поэтические произведения В.Брюсова, В.Маяковского, С.Есенина, А.Ахматовой, Н.Заболоцкого, С.Гудзенко, В.Высоцкого и других. |
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