The study of presolar meteoritic grains is a new inter-disciplinary field that brings together topics from nuclear physics to astronomy and chemistry. Traditionally, most of the information about the cosmos has been gathered by observing light through telescopes. However, with the recent discovery that some dust grains extracted from primitive meteorites were produced in stellar environments, we now have the opportunity to gather information about stars and our Galaxy from the laboratory analysis of tiny pieces of stardust. Stellar grains represent a unique and fascinating subject of study. Their analysis is a breakthrough in research on stellar nucleosynthesis and the origin of the elements.While a number of specialized reviews exist on the topic, this book is the first work that brings together in a unified and accessible manner the background knowledge necessary for the study of presolar grains together with up-to-date discoveries in the field.The book includes exercise questions and answers, an extensive glossary for easy reference, and more than 40 figures and tables — from schematic diagrams to electron microscope images and graphs of results from stellar grain measurements and theoretical stellar models.
The study of presolar meteoritic grains is a new inter-disciplinary field that brings together topics from nuclear physics to astronomy and chemistry. Traditionally, most of the information about the cosmos has been gathered by observing light through telescopes. However, with the recent discovery that some dust grains extracted from primitive meteorites were produced in stellar environments, we now have the opportunity to gather information about stars and our Galaxy from the laboratory analysis of tiny pieces of stardust. Stellar grains represent a unique and fascinating subject of study. Their analysis is a breakthrough in research on stellar nucleosynthesis and the origin of the elements. While a number of specialized reviews exist on the topic, this book is the first work that brings together in a unified and accessible manner the background knowledge necessary for the study of presolar grains together with up-to-date discoveries in the field. The book includes exercise questions and answers, an extensive glossary for easy reference, and more than 40 figures and tables OCo from schematic diagrams to electron microscope images and graphs of results from stellar grain measurements and theoretical stellar models.
There is no such thing as an illegal human being or an illegal immigrant." Maria Hinojosa is an Emmy award-winning journalist and was the first Latina to found a national independent non-profit newsroom in the United States. But before all that, she was a girl with big hair and even bigger dreams. Born in Mexico and raised in the vibrant neighborhood of Hyde Park, Chicago, Maria was always looking for ways to better understand the world around her-and where she fit into it. Here, she combines stories from her life, beginning with her family's indelible experience of immigration all the way through the first time she heard her own voice on national radio, with truths about the United States' long and complicated relationship with immigrants. Funny, frank, and wise, Maria's story is one you will want to read again and again, and her voice will inspire you to find your own"--
This beautiful Spanish-language book, translated from the hugely popular Little People, BIG DREAMS series, can be enjoyed by fluent Spanish speakers and those learning the language, whether at home or in the classroom. En este libro de la serie BIG DREAMS, aclamada por la crítica y superventas de millones de copias, Little People, descubra la vida de Martin Luther King Jr., el inspirador ministro y activista de los derechos civiles. El pequeño Martin creció en una familia de predicadores: su padre era predicador, su tío era predicador, su abuelo era predicador… así que tal vez él también se convertiría en un gran predicador. Un día, un amigo lo invitó a jugar a su casa. Martin se sorprendió cuando su madre no lo dejó entrar porque era negro. Ese día se dio cuenta de que algo terriblemente injusto estaba pasando. Martin creía que nadie debería quedarse callado y aceptar algo si está mal. Y se prometió a sí mismo que, cuando fuera mayor, lucharía contra la injusticia con el arma más poderosa de todas: las palabras. Este libro conmovedor presenta ilustraciones elegantes y extravagantes y datos adicionales en la parte posterior, incluida una cronología biográfica con fotos históricas y un perfil detallado de la vida del activista inspirador. Little People, BIG DREAMS es una exitosa serie de libros y juegos educativos que exploran las vidas de personas destacadas, desde diseñadores y artistas hasta científicos y activistas. Todos lograron cosas increíbles, pero cada uno comenzó su vida como un niño con un sueño. Esta serie de empoderamiento ofrece mensajes inspiradores para niños de todas las edades, en una variedad de formatos. Los libros de cartón se cuentan en oraciones simples, perfectos para leer en voz alta a bebés y niños pequeños. Las versiones de tapa dura presentan historias ampliadas para lectores principiantes. Los juegos de regalo en caja le permiten recopilar una selección de libros por tema. Las muñecas de papel, las tarjetas de aprendizaje, los juegos de combinación y otras divertidas herramientas de aprendizaje brindan aún más formas de hacer que las vidas de estos modelos a seguir sean accesibles para los niños. ¡Inspira a la próxima generación de personas destacadas que cambiarán el mundo con Little People, BIG DREAMS! In this book from the critically acclaimed, multimillion-copy bestselling Little People, BIG DREAMS series, discover the life of Martin Luther King Jr., the inspiring minister and civil rights activist. Little Martin grew up in a family of preachers: his dad was a preacher, his uncle was a preacher, his grandfather was a preacher… so maybe he’d become a great preacher too. One day, a friend invited him to play at his house. Martin was shocked when his mother wouldn’t let him in because he was black. That day he realized there was something terribly unfair going on. Martin believed that no one should remain silent and accept something if it's wrong. And he promised himself that – when he grew up – he’d fight injustice with the most powerful weapon of all: words. This moving book features stylish and quirky illustrations and extra facts at the back, including a biographical timeline with historical photos and a detailed profile of the inspiring activist’s life. Inspire the next generation of outstanding people who will change the world with Little People, BIG DREAMS!
This collection contains 26 short stories, including a translation of Maria Elsa da Rocha's Vivências partilhadas, plus six stories that appeared in newspapers and six unpublished texts.
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