Brooks Douglas

As the sectional crisis gripped the United States, the rancor increasingly spread to the halls of Congress. Preston Brooks's frenzied assault on Charles Sumner was perhaps the most notorious evidence of the dangerous divide between proslavery Democrats and the new antislavery Republican Party.

The eighth edition of Fundameltals of Analytical Chemistry, like its predecessors is an introductory textbook designed primarily for a one- or two-semester course for chemistry majors. Since the publication of the seventh edition, the scope of analytical chemistry has continued to evolve, and in this edition we have included many applications to biology, medicine, materials science, ecology, forensic science and other related fields. The widespread use of computers for instructional purposes has led us to incorporate many spreadsheet applications, examples, and exercises. Our companion book Applications of Micrsoft Excel in Analytical Chemisty provides students with a tutorial guide for applying spreadsheets to analytical chemistry and introduces many additional spreadsheet operations. We also have added many current topics, such as atomic and molecular mass spectrometry, field-flow fractionation, and chiral chromatography. We have revised many older treatments to incorporate contemporary instrumentation and techniques. We recognize that courses in analytical chemistry vary from institution to institution and depend upon the available facilities the time allocated to analytical chemistry in the chemistry curriculum and the desires of individual instructors. We have therefore designed the eighth edition of Fundamentals of Analytical Chemistry so that instructors can tailor the text to meet their needs and students can encounter the material on several levels, in descriptions, pictorials, illustrations, and interesting features.

A very important part of printed circuit board (PCB) design involves sizing traces and vias to carry the required current. This exciting new book will explore how hot traces and vias should be and what board, circuit, design, and environmental parameters are the most important. PCB materials (copper and dielectrics) and the role they play in the heating and cooling of traces are covered. The IPC curves found in IPC 2152, the equations that fit those curves and computer simulations that fit those curves and equations are detailed.

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