Biochemical Genetics

نویسنده

  • Laura R. Livingston
چکیده

WVith improvements in and the lowering costs of photographic methods, light and electron photomicrography have become indispensable for the spread of biomedically related knowledge. Now color photomicrography is within the range of most laboratory budgets, but to my knowledge there has been no comprehensive practical guidebook on color techniques. This book attempts to fill the need. Unfortunately, it is so loosely organized and general that its usefulness as a practical handbook is severely limited. A more specific criticism, probably related to the fact that the book was originally released in Hungary, is that most of the equipment and the bibliography cited by the author is not in standard use in the United States. For instance, no mention was made of the American Optical line of microscopes. Furthermore, while the translation is clear and presumably accurate, the typography is so poor that doubts arise concerning the content, particularly the tables. There are numerous misspellings, and incorrect hyphenations. The effectiveness of the numerous color plates is lessened because of noticeable printthrough and their heavy and artificial reflective coating. Details aside, however, and because of the absence of other guides, this book's redeeming quality lies in its application as a basic primer. It provides theory for the neophyte in understandable terms. Unfortunately, it cannot be used as a direct handbook because of the absence of specific information. Its procedural outlines, such as the steps involved in developing color film or obtaining exposure times, are relatively useless to the man in the darkroom. Such a man needs to know ratings and speed of actual film brands, the serial numbers of lighting units and who makes them, and the trade names and idiosyncracies of developing solutions, and so on. Although the book adequately presents the foundation of basic principles of color photography, the time-proven methods of test stripping and trial and error must ultimately be relied upon in the darkroom. A text that combines the theory of color photomicrography with a complete practical guide has still to be written.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Effect of Chemical Mutagen on Some Biochemical Properties of Stevia rebaudiana Bertoni

Induced mutagenesis causes an increase variation of some products with limited genetic resources. In this study, the antioxidant enzymes activity, biochemical properties and glycoside content of Stevia were assessed by EMS (chemical mutagen) based on two experiments as factorial with completely randomized design with three replications. The results of the first experiment showed that some prope...

متن کامل

Genetic and Non-Genetic Factors in Pigmentation of Neurospora Crassa.

HE biochemical genetics of carotenoid pigments has been studied in the T tomato ( LEROSEN et al. 1941 ; MACKINNEY and JENKINS 1949 ; PORTER and LINCOLN 1950), corn (MANGELSDORF and FRAPS 1931) and red yeast (BONNER et al. 1946). HAXO (1949) worked out the carotenoid components of the wild type Neurospora. The present paper deals with genetic and biochemical studies of a modifier system for pigm...

متن کامل

PCR in forensic genetics.

Since the introduction in the mid-1980s of analyses of minisatellites for DNA analyses, a revolution has taken place in forensic genetics. The subsequent invention of the PCR made it possible to develop forensic genetics tools that allow both very informative routine investigations and still more and more advanced, special investigations in cases concerning crime, paternity, relationship, disas...

متن کامل

Effects of Lichenic Extracts (Hypogymnia physodes, Ramalina polymorpha and Usnea florida) on Human Blood Cells: Cytogenetic and Biochemical Study

Several lichen species have been used for medicinal purposes throughout the ages, and they were reported to be effective in the treatment of different disorders including tuberculosis, hemorrhoids, ulcer, dysentery and cancer. It is revealed that they may be easily accessible sources of natural drugs that could be used as a possible food supplement or in pharmaceutical industry after their safe...

متن کامل

Evaluation of some physiological and biochemical characteristics of bread wheat (Triticum aestivum L.) genotypes under salinity stress

Since about 20% of the world's arable land and 50% of productions in the world are subject to salinity stress, it affects all stages of plant life from germination to seed production. The aim of this study was to investigate the effect of salinity stress on physiological and biochemical characteristics of some wheat cultivars. For this purpose, a factorial experiment was conducted in a complete...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • The Yale Journal of Biology and Medicine

دوره 40  شماره 

صفحات  -

تاریخ انتشار 1967