P. Sprent – författare
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3 produkter
3 produkter
Inbunden, Engelska, 1990
1 611 kr
Skickas inom 10-15 vardagar
Nitrogen fixation is currently of great practical importance because the use of nitrogenous fertilizers has resulted in unacceptable levels of water pollution and the fact that these fertilizers are becoming steadily less economic both in cash terms and in utilization of fossil fuels for their manufacture. This book aims to present new findings in the field of nitrogen fixation and to reflect the influence on the subject of recent developments in biochemistry, molecular biology, genetic engineering and other biotechnologies. The book includes quantitative aspects of the subject, but the many practical difficulties for accurate field assessment of nitrogen fixation and its contribution to nitrogen cycles means that many assessments are either in conflict with each other or must be accepted as tentative. Although this book is concerned essentially with how nitrogen-fixing organisms function and why they are of practical importance, rather than with details of laboratory or field techniques, an appendix deals with the main methods of measurement of nitrogen fixation and some of the problems that must be faced.
Häftad, Engelska, 1994
690 kr
Skickas inom 10-15 vardagar
This is a practical and comprehensive guide to all aspects of writing about science and technology, including both `how to write' and the practical and commercial aspects of publishing as they affect an author. Special features of technical writing are discussed in detail. It also gives special attention to problems facing writers of instruction manuals in catering for users with a wide range of technical backgrounds.
Inbunden, Engelska, 2017
2 730 kr
Skickas inom 10-15 vardagar
Now more than ever before, today's schools are hazard zones. Students are vulnerable to attack from other students and random individuals who may appear to be harmless on the surface or who may be sending out warning signals. Either way, to save their lives or protect themselves from injury, they must be prepared. Now in its second edition, Staying Safe at School is a guidebook that every parent and school administrator should make available to students. Concise and practical, this book will show teenagers how to:Perform a risk assessment to determine if they should feel threatenedRecognize the troublemakers and prevent troubleKnow what to do in a crisis, and more importantly, what not to doImprove their chances of survival if they become victimizedMake changes in their lifestyles that will reduce their risk of being victimizedForce criminals and bullies to alter their plans against their victimsFace fear and learn how to control itWork with other students, teachers, counselors, and administrators to increase the safety of allBullies and other school predators will always exist in one form or another. But students can take steps to make themselves less likely to be victimized. Using anecdotes and examples to demonstrate concepts, this volume provides important survival tips and gives students the confidence they need to protect themselves and feel safe in dangerous situations.