close

Вход

Забыли?

вход по аккаунту

?

Book Review Die Analyse der Luft und ihre Verunreinigungen in der freien Atmosphre und am Arbeitsplatz (Analysis of Air and its Impurities in the Free Atmosphere and at Places of Work). W. Leithe

код для вставкиСкачать
Thestructure and propertiesof collagen and its characterization
in the solid state are considered in a review by J . C. W
Chien. Some 20-30% of the protein present in vertebrates
is in the form of collagen; its concentration is particularly
high in skin, sinews, and bones. Apart from the primary to
quaternary structure, macroscopic ultrastructures made up
of ordered aggregates also have to be considered in collagen.
Collagen i s semicrystalline. A section each is devoted to application of the two-phase model, mechanical and dielectric properties, denaturation, and biomedical applications. [SolidState Characterization of the Structure and Properties of Collagen. Rev. Macromol. Chem. 13,1-80 (1975); 252 references]
[Rd 818-IE L]
The coupling of “high-energy”phosphate bonds to energy transductions is reviewed in an article by P. D. Boyer, B. 0. Stokes,
R. G. Wolcott, and C. Degani. According to recent opinion
it would appear that the primary function of the energy in
oxidative phosphorylation lies in the liberation of ATP, which
is formed on reversal of hydrolysis. The authors suggest that
the conformational changes observed on ATP binding and
cleavage play an essential role in the function of the mitochondria and also in other ATP-dependent processes, such as
muscle contraction. [Coupling of “High-Energy” Phosphate
Bonds to Energy Transductions. Fed. Proc. 34, 1711-1717
(1975); 46 references]
[Rd 810 IE-R]
BOOK REVIEWS
Die Analyse der Luft und ihfe Verunreinigungen in der freien
Atmosphare und am Arheitsplatz (Analysis of Air and its
Impurities in the Free Atmosphere and at Places of Work).
By W Leithe. Wissenschaftliche Verlagsgesellschaft mbH,
Stuttgart 1974. 2nd revised and expanded edition, xv, 303
pp., 49 figs., bound, DM 74.--.
A second edition of Leithe’s book has now appeared, only
a few years after publication of the first. Again we have an
essentially practical book providing valuable assistance to
the ever-increasing number of users of methods of air analysis.
This should be particularly emphasized, because there is in
the German language no other presentation of the theme
in a monograph that, like the present conveniently handleable
volume, is comprehensive, accurate, and topical.
In his subdivision of the subject the author proceeds rigorously from the general to the specialized. First, in a general
section, he provides the reader with conceptual and historical
basic information, then reports briefly on the legal requirements, measures, and procedures for technological management in various countries as regards purification of the air
and labor protection. He follows this up with bibliographic
references, and then goes into the sources of atmospheric
impurities and the form in which they appear, into the technology of reducing their emission, into the distribution of foreign
materials, and into their importance in hygiene, while paying
particular attention to limiting values and their definition.
The second main section provides in concentrated form
the tools needed for air analysis in industrial practice. Here
are discussed the quantitative aspects of the analyses, the
purposes of the investigations, and the choice of measuring
procedures and the analysis level in special cases, e.g. the
determination of background impurities. The methods and
problems of sampling and of sample enrichment are discussed
in detail. The preparation and the use of reference gas mixtures
are treated with remarkable topicality in accord with the
importance of calibration and of investigation of their effects.
There follows a special methodological section in which,
along with test-tube processes, are treated above all and with
examples, the instrumental methods relying on the application
of spectrochemical, electrochemical, and chromatographic
principles, as well as the analytical use of the sense of smell.
In view of the rapidity of technical developments, it is not
surprising that some of the processes described have meanw hile
been abandoned, e.q. reversion chromatography. It will not
be considered a shortcoming that the author has rejected
discussion of remote-measurement methods whose validity
is still disputed, e. g . Lidar and correlation spectrometry.
More than half of the book is taken up by the specialized
58
part. This part provides analytical methods for air contaminated with a wide variety of inorganic or organic constituents, these methods all being of the nature of complete
analytical prescriptions by means of which the work can be
carried out without the need to allow for considerable unsuspected difficulties. These prescriptions are enhanced by a
wealth of literature references reaching to around 2972; newer
developments are thus included, such as the application of
chemiluminescence analysis to the determination of ozone
and nitrogen oxides. The book ends with tables giving conversion factors, material constants, and limiting values. Taken
as a whole, the volume is presented in a pleasant, technically
sound, and solid manner, and its few irregularities will surely
be corrected at a later date.
Heinrich Hartkamp [NB 286 IE]
Progress in Mass Spectrometry. Fortschritte der Massenspektrometrie. Edited by H . Budzikieivic. Vol. 1. Indolalkaloide
(Indole Alkaloids). Part 1 : Text, Part 2: Spektren (Spectra).
By M . Nesse. Verlag Chemie, GmbH, Weinheim 1974. 1st
Edit., Part 1 : xvii, 261 pp., 95 schemes, 42 tables; Part
2 : vii, 98 pp., 173 spectra; linen-bound, together D M 98.-.
Vol. 2: Chroman and Related Compounds. By S. E. Drewes.
Verlag Chemie, GmbH, Weinheim 1974. 1st Edit., vii, 138
pp., 33 figs., I02 schemes, linen-bound, DM 58.-.
Today it is difficult even for the expert to survey the relationships between structure and mass spectra of a certain class
of compounds, because the literature is widely scattered and
some of the important data are hidden in the experimental
parts of papers. The present series of monographs therefore
meets a true need and will provide much saving in literature
searches.
In the first volume Hesse, who is probably the leading
expert on indole alkaloids, gives an exhaustive review of this
special field. In the first part the characteristic decomposition
reactions of the individual types of compounds are arranged
in subgroups and critically discussed, while the second part
contains all the relevant spectral data. The most important
data and references can be derived from tables at the beginning
of each section. The two volumes can serve as models of
their kind and will prove invaluable to all who are active
in this field.
The second volume, which is compiled by Drewes and
concerns the mass spectra of chromans and related compounds, is in the reviewer’s opinion less successful. For
example, the formulas do not contain the numbering of the
often complex compounds, which is necessary for rapid underAnyrrr,. CAern. Inr. Ed. Enyl.
il bbl. 15 (1976) No. I
Документ
Категория
Без категории
Просмотров
3
Размер файла
152 Кб
Теги
air, ihre, freien, die, verunreinigungen, work, der, place, impurities, analyse, und, luft, arbeitsplatz, book, leith, free, analysis, atmosphere, review, atmosphre
1/--страниц
Пожаловаться на содержимое документа