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physic

Nanotechnology: The Plastics of the 21st Century?.pdf

November 10, 2009 · Filed Under Engineering Physic · Comment  · Tags: ,

Taken from Preface: This report was prepared by Guy Carpenter & Company, Inc. in conjunction with Dr. Robert Blaunstein, National Director of Loss Control and Underwriting Manager for American Safety Insurance Company. Previously, Dr. Blaunstein was Managing Director and co-founder of Seneca Environmental Management (SEM), Vice President of Seneca Specialty Company and Vice President of Crum and Forster Specialty Insurance Company. While Assistant Professor of Physics at the University of Tennessee and consulting scientist to the Oak Ridge National Laboratory, Dr. Blaunstein conducted research, provided instruction and supervised doctoral students in the area of atomic and molecular radiation physics. A frequent lecturer and consultant to governmental and industrial leaders throughout the world, Dr. Blaunstein was a Public Health Service Fellow and member of the United States Chamber of Commerce, Environment Committee and is a member of the American Physical Society, The American Society of Testing and Materials, National Groundwater Association and the Sigma Xi Honorary Society. He received his Ph.D. in physics from the University of Tennessee and an M.S. degree in physics from Case Western Reserve University.

s p o n s o r e d   l i n k s


Fundamentals of Compressible Flow Mechanics.pdf

November 9, 2009 · Filed Under Mechanical & Industrial Engineering · Comment  · Tags: , ,

Taken from Preface: This book, Fundamentals of Compressible Flow, describes the fundamentals of compressible flow phenomena for engineers and others. This book is designed to replace the book(s) or instructor’s notes for the compressible flow in (mostly) undergraduate classes for engineering/science students. It is hoped that the book could be used as a reference book for people who have at least some knowledge of the basics of fundamental fluid mechanics, and basic science such as calculus, physics, etc. It is hoped that the computer program enclosed in the book will take on a life of its own and develop into an open content or source project.
The structure of this book is such that many of the chapters could be usable independently. For example, if you need information about, say, Fanno flow, you can read just chapter 9. I hope this makes the book easier to use as a reference manual. However, this manuscript is first and foremost a textbook, and secondly a reference manual only as a lucky coincidence.

A PLC Primer.pdf

November 8, 2009 · Filed Under Electrical Engineering · Comment  · Tags: ,

Taken from Why Use PLC: The softwiring advantage provided by programmable controllers is tremendous. In fact, it is one of the most important features of PLCs. Softwiring makes changes in the control system easy and cheap. If you want a device in a PLC system to behave differently or to control a different process element, all you have to do is change the control program. In a traditional system, making this type of change would involve physically changing the wiring between the devices, a costly and time-consuming endeavor.

Cosmology for Particle Physicists.pdf

November 8, 2009 · Filed Under Physics · Comment  · Tags: , , , ,

Taken from Introduction: Over the past two decades Cosmology has increasingly become a precision science. That the Universe is expanding was an astonishing discovery. Now we know its details to unprecedented precision. An expanding Universe also implied an extremely compact state in the past, and therefore very high temperature. The Particle Physics forces which can now be explored only in accelerator laboratories were in free play in the remote past. Thus the observation of the oldest remnants in the Universe amounts to looking at the results of a Particle Physics experiment under natural conditions.

Fundamentals of Die Casting Design.pdf

November 7, 2009 · Filed Under Mechanical & Industrial Engineering · Comment  · Tags: , , , ,

Taken from Abstract: Die-casting engineers have to compete not only with other die-casting companies, but also against other industries such as plastics, and composite materials. Clearly, the ”black art” approach, which has been an inseparable part of the engineer’s tools, is in need of being replaced by a scientific approach. Excuses that “science has not and never will work” need to be replaced with “science does work”. All technologies developed in recent years are described in a clear, simple manner in this book. All the errors of the old models and the violations of physical laws are shown. For example, the “common” pQ2 diagram violates many physical laws, such as the first and second laws of thermodynamics. Furthermore, the “common” pQ2 diagram produces trends that are the opposite of reality, which are described in this book.
The die casting engineer’s job is to produce maximum profits for the company.
In order to achieve this aim, the engineer must design high quality products at a minimum cost. Thus, understanding the economics of the die casting design and process are essential. These are described in mathematical form for the first time in this volume. Many new concepts and ideas are also introduced. For instance, how to minimize the scrap/cost due to the runner system, and what size of die casting machine is appropriate for a specific project.
The die-casting industry is undergoing a revolution, and this book is part of it. One reason (if one reason can describe the situation) companies such as Doehler Jorvis (the biggest die caster in the world) and Shelby are going bankrupt is that they do not know how to calculate and reduce their production costs. It is my hope that die-casters will turn such situations around by using the technologies presented in this book. I believe this is the only way to keep the die casting professionals and the industry itself, from being “left in the dust.”




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