An approach to a debated rejuvenator (rasayana) of traditional Hindu ayurvedic medicine. It shows that shilajit contains two compounds viz DCPs (dibenzo - a pyrone chromoproteins) and their key nuclear components DBPs (dibenzo - a pyrones).
Experimental Biology: A Laboratory Manual provides a theoretical basis of various practical in a lucid manner at graduate and postgraduate levels. This includes Immunology, Microbiology, Animal Cell Culture, Biochemical Techniques, Separation and Analytical Techniques, Haematology, and Physiology. The methods are detailed completely in a step-by-step format that allows the students to perform experiments without reference to any secondary source. The reagents and chemicals are specified with exact methods of preparation so that no further calculations are necessary. The book contains several relevant figures, flow diagrams and charts to aid the students.
In the study of short-wave diffraction problems, asymptotic methods - the ray method, the parabolic equation method, and its further development as the "etalon" (model) problem method - play an important role. These are the meth ods to be treated in this book. The applications of asymptotic methods in the theory of wave phenomena are still far from being exhausted, and we hope that the techniques set forth here will help in solving a number of problems of interest in acoustics, geophysics, the physics of electromagnetic waves, and perhaps in quantum mechanics. In addition, the book may be of use to the mathematician interested in contemporary problems of mathematical physics. Each chapter has been annotated. These notes give a brief history of the problem and cite references dealing with the content of that particular chapter. The main text mentions only those pUblications that explain a given argument or a specific calculation. In an effort to save work for the reader who is interested in only some of the problems considered in this book, we have included a flow chart indicating the interdependence of chapters and sections.