What makes a windup toy get up and go? How does an earbud operate? And why does the line you’re waiting in always seem the slowest? Get middle-schoolers engaged in the fascinating science behind familiar items with More Everyday Engineering. Like Everyday Engineering, this compilation brings together activities based on the “Everyday Engineering” columns from NSTA’s award-winning journal Science Scope. Thirteen hands-on investigations focus on three aspects of engineering: designing and building, reverse engineering to learn how something works, and constructing and testing models. Like the original collection, this book is easy to use. Each investigation is a complete lesson that includes in-depth teacher background information, expected sample data, a materials list, and a student activity sheet for recording results. The activities use simple, inexpensive materials you can find in your science classroom or at a dollar store. Whether you’re a teacher, parent, or enrichment-program leader, go beyond the usual bridge-building and egg-drop activities. Spark curiosity with appealing activities that will help middle schoolers understand that engineering truly is a part of their everyday lives.
Glutamate is the major excitatory neurotransmitter in the mammalian central nervous system (CNS). It regulates normal CNS function, is a major participant in pathology, and serves learning, memory, and higher cognitive functions. The 12 chapters of this book provide the first comprehensive coverage of all the major features of glutamate as excitatory neurotransmitter. The book begins with a valuable historical backdrop. Building from a chapter on the common structure of glutamate receptors, several others cover the major ionotropic receptors, their structure, function, and pharmacology. A follow-up chapter discusses the metabotropic receptors that are directly coupled to second messenger metabolism. A central theme of the book is the capacity of the excitatory amino acid system to contribute to the diverse array of signaling systems in the CNS as a direct result of the large assortment of receptors (including, for the ionotropic receptors, various subunits) the combination of which determine distinct functional properties. A recent development in the field discussed in several chapters is the biochemical characterization of a supermolecular protein complex, the post-synaptic density, that makes the unique structure of excitatory synapses. This complex subserves the experience-dependent modulation of synaptic strength and synaptic plasticity, and gives the synapse the capacity to change dynamically in both structure and receptor composition. Drawing on the individual properties of the receptors, transporters, and functional architecture of the synapse, the concluding chapters describe the functional integration of these components in the more complex physiological processes of plasticity and pathology. Recognition that the regulation of excitatory amino acid receptor activity underlies the pathology of many neurological diseases, including stroke, Alzheimer's disease and schizophrenia, has opened up an exciting frontier that will allow the translation of our understanding of these basic mechanisms into new concepts of pathology and new therapeutic strategies. This book will be invaluable for neuroscientists, pharmacologists, neurologists, and psychiatrists, and for their students and trainees.
More than two decades after his death, Martin Luther King, Jr. remains America’s preeminent symbol of the civil rights movement. In the early years of the movement King advocated a policy of nonviolent resistance to the racism ingrained in American society. In later years, however, King adopted a more militant stance toward racial and other forms of injustice. In this innovative book Richard Lentz considers King as a cultural symbol, from the Montgomery bus boycott of 1955–1956 to the Poor People’s Campaign, which King helped organize shortly before his assassination in 1968. In particular, Lentz examines the ways the three major news weeklies—Newsweek, Time, and U.S. News & World Report—presented King to their readers. It is primarily through media institutions that Americans shape and interpret their values. Newsweek, Time, and U.S. News—though representing different shadings of political ideology, ranging from left of center to conservative—were all aimed at the same audience, middle-class Americans. Therefore their influence on the nation’s values during a period of enormous social upheaval was significant. In the mid-1960s, when King shifted from reform to radicalism, the news magazines were thrust into what Lentz calls a “crisis of Symbols” because King no longer fit the symbolic mold the magazines had created for him. Lentz investigates how the magazines responded to this crisis, discussing the ways in which their analyses of King shifted over time and the means they employed to create a new symbolic image that made sense of King’s radicalization for readers. This is an important, perceptive study of Martin Luther King, Jr.’s career and an astute critical analysis of the reporting practices of the news media in the modern era.
The 149th Pennsylvania saw its one day of glory on July 1, 1863, when this young and untried regiment staged a magnificent defense at McPherson's farm. Although this bright promise quickly faded into more typical regimental experience, the story of the regiment's service under the indomitable Joshua Chamberlain remains worth telling. Drawing on the service records of more than 800 soldiers as well as diaries, letters, and other primary souces, this book details the 149th's battles from brigade to company level, from the charges at Gettsyburg to the assault at Petersburg. Focus is on the development, mood and character of a regiment as it undergoes changes in leadership, loss of reliable veterans and the increased individual desire for survival as brutal battles take their toll on mind and body. More than 100 photographs enhance the text.
Traces the history of Halley's comet, summarizes what is known about the characteristics and behavior of comets, and suggests the best way to observe them.
Over the past 225 years the oak savannah at the mouth of the Niagara River -- designated as a Military Reserve but regarded by the local citizenry as their common lands-- has witnessed a broad spectrum of military, political and cultural happenings. Perhaps most compelling is the story of Niagara Camp, established in the 1870s on the Reserve as the summer camp for Military District #2. By the eve of the Great War this District that encompassed most of central Ontario from Niagara to Sault St. Marie including Toronto, Hamilton and St. Catharines, was the most populous and patriotic District in all of Canada. Niagara Camp and the training that went on within it endeavoured to prepare over 50,000 young men for the Overseas Canadian Expeditionary Force; however, the Camp's vigorous daily routines, comprehensive instruction and discipline could not ready them for the horrors of the Western Front and ...Armageddon. Many never returned. In 1917 Niagara Camp also became the unique training centre for 22,000 Polish Army volunteers, American and Canadian boys eager to fight for a distant land many had never set foot on. The horrific Spanish Flu Pandemic soon followed with dire consequences for the soldiers and their volunteer caregivers. Niagara was also a training camp for Canada's ill-fated and little-known Siberian Expedition. Remarkable sagas are recounted of some of the Camp's veterans. On the centennial of the Great War this in-depth recognition of the brave young volunteers during their preparation for war is long overdue....
In this New Studies in Biblical Theology volume, Richard Lints argues that "idol" language in the Bible is a conceptual inversion of the "image" language of Genesis 1. He shows how the narrative of human identity runs from creation to fall to redemption in Christ, and examines the recent renaissance of interest in idolatry with its conceptual power to explain the "culture of desire.
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