Radiation Trapping in Atomic Vapours


Book Description

Radiation can be absorbed and re-emitted many times in atomic vapors before it reaches the boundaries of the container encasing the vapor. This effect is known as radiation trapping. It plays an important role practically everywhere atomic vapors occur, whether in spectroscopy, gas lasers, atomic line filters, the determination of atomic lifetimes, measurements of atomic interaction potentials, or electric discharge lamps. This book is the first to assemble all of the information necessary to handle practical problems related to radiation trapping, and it emphasizes both physical insights and mathematical methods. The introduction reviews resonance radiation and collision processes in atomic vapors. This is followed by detailed explanations of the physical effects and mathematical methods for various types of problems (e.g., with or without saturation, particle diffusion, reflecting cell walls). The last part of the book describes the applications of these methods to a variety of practical problems, such as cross-section measurements and the design of discharge lamps.




Science of Trapping


Book Description




Laser Cooling and Trapping


Book Description

Intended for advanced undergraduates and beginning graduates with some basic knowledge of optics and quantum mechanics, this text begins with a review of the relevant results of quantum mechanics, before turning to the electromagnetic interactions involved in slowing and trapping atoms and ions, in both magnetic and optical traps. The concluding chapters discuss a broad range of applications, from atomic clocks and studies of collision processes, to diffraction and interference of atomic beams at optical lattices and Bose-Einstein condensation.




Camera Trapping for Wildlife Research


Book Description

Camera trapping is a powerful and now widely used tool in scientific research on wildlife ecology and management. It provides a unique opportunity for collecting knowledge, investigating the presence of animals, or recording and studying behaviour. Its visual nature makes it easy to successfully convey findings to a wide audience. This book provides a much-needed guide to the sound use of camera trapping for the most common ecological applications to wildlife research. Each phase involved in the use of camera trapping is covered: - Selecting the right camera type - Set-up and field deployment of your camera trap - Defining the sampling design: presence/absence, species inventory, abundance; occupancy at species level; capture-mark-recapture for density estimation; behavioural studies; community-level analysis - Data storage, management and analysis for your research topic, with illustrative examples for using R and Excel - Using camera trapping for monitoring, conservation and public engagement. Each chapter in this edited volume is essential reading for students, scientists, ecologists, educators and professionals involved in wildlife research or management.




Camera Trapping Guide


Book Description

Using a specially made, inexpensive and rugged heat-detecting camera, you can view wildlife up close. Camera Trapping Guide gives you the trapping techniques and knowledge of animal behaviors so you can get the best possible photos and videos. Includes 37 species common to the eastern U.S. Large and small mammals, squirrels to bears, deer, and moose, plus birds and even the American alligator—are covered. With photos and range maps each entry gives details on physical characteristics, tracks and sign, diet, habitat, and breeding. Also included are specific camera trapping techniques pertinent to each animal. You’ll learn the characteristics of the various cameras, where to place the camera and the camera settings to get best results, and how to minimize impacts on the environment.




The Ant Trap


Book Description

We live in a world of crowds and corporations, artworks and artifacts, legislatures and languages, money and markets. These are all social objects - they are made, at least in part, by people and by communities. But what exactly are these things? How are they made, and what is the role of people in making them? In The Ant Trap, Brian Epstein rewrites our understanding of the nature of the social world and the foundations of the social sciences. Epstein explains and challenges the three prevailing traditions about how the social world is made. One tradition takes the social world to be built out of people, much as traffic is built out of cars. A second tradition also takes people to be the building blocks of the social world, but focuses on thoughts and attitudes we have toward one another. And a third tradition takes the social world to be a collective projection onto the physical world. Epstein shows that these share critical flaws. Most fundamentally, all three traditions overestimate the role of people in building the social world: they are overly anthropocentric. Epstein starts from scratch, bringing the resources of contemporary metaphysics to bear. In the place of traditional theories, he introduces a model based on a new distinction between the grounds and the anchors of social facts. Epstein illustrates the model with a study of the nature of law, and shows how to interpret the prevailing traditions about the social world. Then he turns to social groups, and to what it means for a group to take an action or have an intention. Contrary to the overwhelming consensus, these often depend on more than the actions and intentions of group members.




Free Radicals


Book Description

Free radicals play key roles in physiologic regulation and in many degenerative and pathologic processes, making them a fertile area of research. This book focuses on spin trapping, a sophisticated technique for the identification of free radicals in biological systems. The method is complex, and this book offers an in-depth guide to all of the critical aspects needed for its application to free radicals in biology. This includes advice on interpreting results, trouble-shooting, and experimental designs.




When You Trap a Tiger


Book Description

WINNER OF THE NEWBERY MEDAL • WINNER OF THE ASIAN/PACIFIC AMERICAN AWARD FOR CHILDREN'S LITERATURE • #1 NEW YORK TIMES BESTSELLER Would you make a deal with a magical tiger? This uplifting story brings Korean folklore to life as a girl goes on a quest to unlock the power of stories and save her grandmother. Some stories refuse to stay bottled up... When Lily and her family move in with her sick grandmother, a magical tiger straight out of her halmoni's Korean folktales arrives, prompting Lily to unravel a secret family history. Long, long ago, Halmoni stole something from the tigers. Now they want it back. And when one of the tigers approaches Lily with a deal--return what her grandmother stole in exchange for Halmoni's health--Lily is tempted to agree. But deals with tigers are never what they seem! With the help of her sister and her new friend Ricky, Lily must find her voice...and the courage to face a tiger. Tae Keller, the award-winning author of The Science of Breakable Things, shares a sparkling tale about the power of stories and the magic of family. "If stories were written in the stars ... this wondrous tale would be one of the brightest." —Booklist, Starred Review




Trapping 101


Book Description

Tips, tactics, and techniques for all skill levels. The ancient art of trapping goes back centuries, almost to the beginning of civilization. Native Americans used the pit trap, deadfalls, and snares, the Chinese documented the use of nets and pits in the fourth century BCE, and virtually every civilization can exhibit some example of the use of a trap in one form or another to procure meat, hides, or fur. The fur trade across Europe was dominated by the Russians, which provided furs to the greater part of Western Europe and Asia during the Middle Ages, which prompted the exploration of Siberia and its game rich forests. In North America, trapping was one of the primary reasons why settlers pushed West, taking advantage of the bountiful game across the continent. Fur was used not only for coats, hats, and mittens, it was used as a form of barter. The taking of a fur-bearing animal was and is a big accomplishment, as fooling a crafty animal on its home territory is no easy feat. In Trapping 101, veteran trapper Phil Massaro reveals all the secrets of the trade, from knowing where to set traps, to understanding and using various types of traps, to properly using scents. Tips and tactics for taking beavers, muskrats, weasels, raccoons, skunks, otters, and more are all covered. While there is a wealth of information in here for beginners, information that will help them pick up trapping with relative ease, there are many subtle tips and tricks that even a veteran trapper will appreciate. Times have, of course, changed since the days of the voyageurs and rendezvouses. There are many more people in this modern world, many more dwellings, many more towns and cities. But there is a place for trapping in all this, just as there are places for hunting and fishing. A knowledgeable trapper, following game rules and respecting the animals he is trying to trap, fits right into the grand scheme of Mother Nature existing in harmony with humankind. This book will help you achieve that.




Camera Trapping


Book Description

Camera trapping in wildlife management and research is a growing global phenomenon. The technology is advancing very quickly, providing unique opportunities for collecting new biological knowledge. In order for fellow camera trap researchers and managers to share their knowledge and experience, the First International Camera Trapping Colloquium in Wildlife Management and Research was held in Sydney, Australia. Camera Trapping brings together papers from a selection of the presentations at the colloquium and provides a benchmark of the international developments and uses of camera traps for monitoring wildlife for research and management. Four major themes are presented: case studies demonstrating camera trapping for monitoring; the constraints and pitfalls of camera technologies; design standards and protocols for camera trapping surveys; and the identification, management and analyses of the myriad images that derive from camera trapping studies. The final chapter provides future directions for research using camera traps. Remarkable photographs are included, showing interesting, enlightening and entertaining images of animals 'doing their thing'.