eBooks de Química, página 15 de 20

In "On the Existence of Active Oxygen," Edward Harrison Keiser delves into the complexities of oxygens role in biological and environmental contexts, presenting a pioneering investigation into the reactive forms of oxygen and their implications. Through a meticulous examination that blends empirical data with theoretical analysis, Keiser employs a clear yet sophisticated literary style, making challenging scientific concepts accessible to both academics and interested lay readers. The book situates itself within the broader context of ecological chemistry and atmospheric sciences, contributing significantly to ongoing debates regarding oxidative stress and its biological ramifications. Edward Harrison Keiser, a distinguished biochemist and environmental scientist, draws upon his extensive research background and field studies to provide a rich, informative perspective on the subject. His commitment to elucidating the roles of environmental factors in biological systems is evident throughout this work, which is fueled by a lifelong passion for interdisciplinary exploration and a quest for understanding how organisms interact with their environments. "On the Existence of Active Oxygen" is a must-read for students and professionals in the fields of biochemistry, environmental science, and ecology. KeiserAos insights not only enhance our understanding of oxygenAos multifaceted roles but also inspire critical thinking about implications for health and sustainability. This book is an invaluable resource for those seeking to engage with cutting-edge research in a rapidly evolving field.

In the fifth edition of "Elements of the Theory and Practice of Chymistry," Pierre Joseph Macquer crafts a meticulous exploration of early modern chemistry, presenting a synthesis of theoretical principles and practical applications. This seminal work stands out for its clear, systematic exposition, characterized by an elegant prose style that balances scientific rigor with accessibility. MacquerAos text is enriched by illustrations and practical experiments, positioning it within a broader Enlightenment context where empirical inquiry began to supplant tradition and dogma in the natural sciences. Pierre Joseph Macquer, a prominent figure in the French Enlightenment, was deeply influenced by the scientific revolution that unfolded in Europe. His extensive background in teaching and experimentation, along with his involvement in the burgeoning field of chemistry, led him to compile this groundbreaking compendium. Inspired by figures like Antoine Lavoisier, Macquer aimed to democratize the knowledge of chemistry, making it accessible to both novices and practitioners. For scholars, students, or enthusiasts of the history of science, MacquerAos "Elements of the Theory and Practice of Chymistry" is an invaluable resource that not only illuminates the foundations of chemistry but also serves as a window into the evolving scientific methodology of the 18th century.

In "Experiments and Observations on the Following Subjects," Thomas Henry presents a meticulous exploration of scientific investigation during the late 18th century, blending empirical observation with philosophical inquiry. This work serves as an early example of the experimental method, showcasing Henrys rigorous approach to natural philosophy. The text delves into various subjects, including the properties of gases and chemical reactions, reflecting the burgeoning curiosity about the natural world that characterized the Enlightenment. Henrys literary style is characterized by clarity and precision, emphasizing logical deductions drawn from systematic experiments that align with the scientific ethos of his time. Thomas Henry, a prominent figure in the field of chemistry, was deeply influenced by the intellectual currents of the Enlightenment, which championed reason and scientific inquiry. His empirical investigations were not merely academic pursuits; they arose from his dedication to expanding the knowledge framework of his era and enhancing the practical applications of science. Furthermore, his active involvement in public science outreach underscores his commitment to making scientific knowledge accessible, reflecting a broader pedagogical intent in his writing. This book is highly recommended for readers interested in the history of science, presenting a foundational text that elucidates the interplay between experimentation and observation in scientific advancement. Henrys insightful analyses and clear prose make it a significant addition to the canon of natural philosophy, appealing to both scholars and general readers seeking to understand the origins of modern scientific thought.

O ano é 2021 e vivemos tempos difíceis, nos quais só o Esforço Coletivo e a Fé em dias melhores podem trazer oportunidades. Uma delas surgiu no Período Letivo Especial de 2020/4, durante uma cadeira na Pos-graduaço do Instituto de Macromoleculas Professora Eloisa Mano (IMA/UFRJ). Assim nasceu o livro Bioresinas - Cartas de 2021, que tenho o prazer de apresentar! Oito resilientes Alunos da Disciplina de Bioresinas (MMP-719 IMA/UFRJ) uniram esforços para consolidar os textos produzidos por eles proprios ao longo do bimestre. Essa obra reflete o pensamento dessas oito jovens e brilhantes mentes, apos longas discusses sobre os mais variados temas no contexto de Bioresinas. Esses alunos foram impelidos ao desenvolvimento de pensamentos criticos sobre o tema, trazendo a superficie uma serie de questionamentos e proposiçes acerca dos materiais polimericos, sobre como estes materiais impactam nosso Planeta e forma de vida, bem como sobre possiveis soluçes trazidas pelo uso de monomeros e polimeros de fontes renovaveis. Os Autores das cartas perceberam que o Desenvolvimento de nosso pais e os cuidados com nosso Ambiente so questes-chave, as quais devem contar com os Biopolimeros e com os Monomeros provenientes de Fontes Renovaveis. Por ultimo, meus sinceros parabens aos autores das cartas! Caros Magalhes, A.P.T.; Lovera, A.Y.B; Silva, A.C.S.; Pereira, A.J.; Laudares, J.P.M.; Silva, J.C.; Silva, L.C.S.; e Marques, V.M., que as suas criticas, percepçes e pensamentos se espalhem para alem do mundo Lusofono e que mais pessoas se apaixonem por essa intrigante e desafiadora area do conhecimento! Aproveitem a leitura, Fernando Gomes de Souza Jr. (Ed.)

Thomas Thomsons The History of Chemistry is a fascinating exploration of the evolution of the field of chemistry, from ancient alchemy to modern scientific principles. Thomsons meticulous research and engaging writing style make this book a valuable resource for anyone interested in the history of science. Through detailed analysis of key figures, groundbreaking discoveries, and pivotal moments in the development of chemistry, Thomson provides readers with a comprehensive overview of this dynamic and ever-changing discipline. The book is written in a clear and accessible manner, making it suitable for both casual readers and academic scholars alike. Thomson seamlessly weaves together historical narratives and scientific explanations, bringing to life the personalities and experiments that have shaped the world of chemistry. This book is a must-read for anyone seeking a deeper understanding of the roots of modern chemistry.

O ano é 2021 e vivemos tempos difíceis, nos quais só o Esforço Coletivo e a Fé em dias melhores podem trazer oportunidades. Uma delas surgiu no Período Letivo Especial de 2020/4, durante uma cadeira na Pos-graduaço do Instituto de Macromoleculas Professora Eloisa Mano (IMA/UFRJ). Assim nasceu o livro Bioresinas - Cartas de 2021, que tenho o prazer de apresentar! Oito resilientes Alunos da Disciplina de Bioresinas (MMP-719 IMA/UFRJ) uniram esforços para consolidar os textos produzidos por eles proprios ao longo do bimestre. Essa obra reflete o pensamento dessas oito jovens e brilhantes mentes, apos longas discusses sobre os mais variados temas no contexto de Bioresinas. Esses alunos foram impelidos ao desenvolvimento de pensamentos criticos sobre o tema, trazendo a superficie uma serie de questionamentos e proposiçes acerca dos materiais polimericos, sobre como estes materiais impactam nosso Planeta e forma de vida, bem como sobre possiveis soluçes trazidas pelo uso de monomeros e polimeros de fontes renovaveis. Os Autores das cartas perceberam que o Desenvolvimento de nosso pais e os cuidados com nosso Ambiente so questes-chave, as quais devem contar com os Biopolimeros e com os Monomeros provenientes de Fontes Renovaveis. Por ultimo, meus sinceros parabens aos autores das cartas! Caros Magalhes, A.P.T.; Lovera, A.Y.B; Silva, A.C.S.; Pereira, A.J.; Laudares, J.P.M.; Silva, J.C.; Silva, L.C.S.; e Marques, V.M., que as suas criticas, percepçes e pensamentos se espalhem para alem do mundo Lusofono e que mais pessoas se apaixonem por essa intrigante e desafiadora area do conhecimento! Aproveitem a leitura, Fernando Gomes de Souza Jr. (Ed.)

In "Spectropia," J. H. Brown masterfully intertwines elements of Gothic horror with a psychological exploration of the human condition. This vivid narrative delves into the world of illusions and spectral apparitions, utilizing rich, descriptive language that mirrors the tumultuous emotions of its characters. The book situates itself within the 19th-century Victorian literary context, where themes of madness, the supernatural, and the boundaries of reality are deftly navigated, engaging readers in a profound reflection on perception and existence. BrownAos blending of a haunting tone with intricate plots exemplifies the eraAos fascination with the eerie and the unexplained, all while maintaining a critical lens on societal issues. J. H. Brown, an enigmatic figure in literary circles, draws inspiration from his own experiences with the uncanny and societal disillusionment, which vividly inform his storytelling. Having lived through significant cultural shifts, he expertly captures the zeitgeist of his time, blending personal narrative with broader existential questions. His extensive background in literature and philosophy equips him with the intellectual tools to dissect the complexities of the human psyche in this gripping work. "Spectropia" is highly recommended for readers who appreciate a rich tapestry of suspense and introspection. Those drawn to the eerie atmospheres of Gothic literature or who are interested in the psychological intricacies of character-driven narratives will find this book both compelling and thought-provoking. BrownAos exploration of the ephemeral promises to leave a lasting impression on all who embark on this haunting journey.

Para satisfacer las exigencias educativas contemporáneas hay que idear algún nuevo tipo de solución, como por ejemplo, una asignatura terminal avanzada dirigida a estudiantes principiantes. Esta paradoja ha creado un vacio en cuanto a libros de texto se refiere. El presente libro, Quimica analitica moderna, del Profesor Pickering, constituye un interesante ensayo de llenar este vacio. El libro de Pickering es un texto conciso adecuado para alumnos de tercer o cuarto año de carrera.

La obra está redactada de tal forma que puede utilizarse como un libro de exto para: un curso apmplio de un semestre de duración sobre los procesos físico-químicos, durante el cual se expliquen extensamente los doce capitulos; y un curso de un semestre de duracion durante el cual se estudien con profundidad los capitulos que tratan de los procesos convencionales y de los que se aplican corrientemente; o como en nuestra opinion seria mas conveniente, un curso de dos semestres durante el cual se estudien con profundidad los conceptos sobre la dinamica de procesos y todas las materias del libro.

Marie Curies book Marie Curie: The Radio-Active Substances is a landmark work in the field of science, detailing her groundbreaking research on radioactivity. Curies literary style is precise and informative, providing detailed explanations of her experiments and discoveries. The book is a significant contribution to the scientific community, shedding light on the properties of radio-active substances and their implications for future research. Curies work revolutionized the field of chemistry and physics, establishing her as a pioneer in the study of radioactivity. Her experiments and discoveries have had a lasting impact on scientific knowledge and continue to inspire further research in the field. Marie Curie, a Nobel Prize-winning scientist, was driven by a passion for discovery and a relentless pursuit of knowledge. Her groundbreaking research on radioactivity paved the way for future generations of scientists and revolutionized our understanding of the natural world. Curies dedication to her work and her pioneering spirit are reflected in Marie Curie: The Radio-Active Substances, a testament to her enduring legacy in the field of science. I highly recommend Marie Curie: The Radio-Active Substances to readers interested in the history of science and the contributions of groundbreaking researchers like Marie Curie. This book provides valuable insights into Curies work and its impact on the scientific community, making it a must-read for anyone interested in the history of radioactivity and the achievements of one of the most influential scientists of the 20th century.

In "Radio-active Substances," Marie SkÇodowska Curie presents a groundbreaking exploration of radioactivity, a term she helped to define. The book is both a scientific treatise and an insightful narrative that unveils her meticulous research methodologies, ongoing experiments, and her pioneering work with radium and polonium. Using a clear and approachable literary style, Curies text is framed by the eras scientific revolution, characterized by an insatiable curiosity and a quest for knowledge. The intersection of chemistry and physics serves as the backdrop for her discoveries, marking a pivotal moment in the understanding of atomic science and its implications for the future. Marie Curie, the first woman to win a Nobel Prize and the only person to win Nobel Prizes in two different scientific fields, was deeply influenced by her background in physics and mathematics. Her tenacity and radical approach toward an underrepresented field in science stemmed from her own experiences navigating a male-dominated academic world. Curies scholarships and research were propelled by her passion for discovery and her desire to harness scientific findings for the betterment of humanity. "Radio-active Substances" is a must-read for anyone interested in the origins of modern physics, the history of scientific thought, or the powerful contributions of women in science. Cited as a foundational text in the field of radiochemistry, Curies work not only enriches our understanding of radioactivity but also serves as a testament to the enduring pursuit of knowledge against all odds.

Caros leitores, é um grande prazer que compartilho esta obra com vocês - Modelos em Química: Ensino, Pesquisa e Linguagem. Espero que, ao trazer uma compreensão epistemológica acerca dos modelos, sob

A baixa disponibilidade de nitrogênio é um dos fatores com maior capacidade de comprometer o crescimento vegetal e a produção agrícola. A fixação biológica de nitrogênio é um processo natural que con

"The History of Chemistry" spans a period from very old times to the modern era. Since several millennia BC, civilizations were using technologies that would eventually form the basis of the various branches of chemistry. Chemistry was preceded by its protoscience, alchemy, which is an intuitive but non-scientific approach to understanding the constituents of matter and their interactions. It was unsuccessful in explaining the nature of matter and its transformations, but, by performing experiments and recording the results, alchemists set the stage for modern chemistry. While both alchemy and chemistry are concerned with matter and its transformations, the crucial difference was given by the scientific method that chemists employed in their work. Chemistry is considered to have become an established science with the work of Antoine Lavoisier, who developed a law of conservation of mass that demanded careful measurement and quantitative observations of chemical phenomena. The object of this work is to present a comprehensive overview of the progress of chemistry, from its first rude and modest beginnings till it has reached its modern state of importance as one of the leading sciences.Volume 1:Of AlchymyOf the Chemical Knowledge Possessed by the AncientsChemistry of the ArabiansOf the Progress of Chemistry under Paracelsus and His DisciplesOf Van Helmont and the Iatro-ChemistsOf Agricola and MetallurgyOf Glauber, Lemery, and Some Other Chemists of the End of the Seventeenth CenturyOf the Attempts to Establish a Theory in ChemistryOf the Foundation and Progress of Scientific Chemistry in Great BritainVolume 2:Of the Foundation and Progress of Scientific Chemistry in Great BritainOf the Progress of Philosophical Chemistry in SwedenProgress of Scientific Chemistry in FranceProgress of Analytical ChemistryOf Electro-ChemistryOf the Atomic TheoryOf the Present State of Chemistry

Already in its 5th edition, this standard work describes the principles of rheology clearly, vividly and in practical terms. The book includes the rheology of additives in waterborne dispersions and surfactant systems. Not only it is a great reference book, it can also serve as a textbook for studying the theory behind the methods. The practical use of rheology is presented in the areas quality control, production and application, chemical and mechanical engineering, materials science and industrial research and development. After reading this book, the reader should be able to perform tests with rotational and oscillatory rheometers and interpret the results correctly.

Polyester and alkyd resins belong to the most diverse and important material classes of paint chemistry and their usage as binders has been established for a long time. This standard work goes into detail on the composition, structure and properties of these important binder groups and subjects previous findings in that field to a critical review. It shows different precise calculation approaches in modern coatings development, ways to formulate polyester and alkyd resins in experimental designs and how to vary them systematically. A practice- and future-oriented reference book that should not be missing in any laboratory!

Este libro se propone estimular y mantener el interés por los mecanismos de las reacciones orgánicas mostrando como pueden utilizarse los datos experimentales para hallar como tienen lugar las reacci

Este es un libro de texto básico para los estudiantes en los cursos de Ingeniería y para el primer año de graduados. También ha de ser útil como lectura suplementaria para ampliar los conocimientos del estudiante de cursos avanzados de polimeros que este usando textos apropiadamente especializados y, finalmente, podra usarse como continuacion de la educacion en el nivel de postgraduado en Universidades y en la industria.

En este libro se exponen, con claridad, los fundamentos científicos de la Química Orgánica, las propiedades de los compuestos orgánicos y los métodos de síntesis, para desembocar en sus aplicaciones tecnologicas y en los procesos industriales de fabricacion. Se exponen los principios cientificos vigentes, en su relacion con las aplicaciones tecnicas y como fuerza impulsora del extraordinario desarrollo de la Industria Quimica y de la Biotecnologia.El libro esta escrito para estudiantes universitarios y puede servir para un curso de introduccion y para un 2º curso de ampliacion; para ello, esta impreso en dos tipos de letra, siendo recomendable que, en la primera lectura, se prescinda de la tipografia mas pequeña. Ademas, contiene muchas tablas y cuadros para que sirva tambien como libro de consulta y conserve su validez despues de superados los estudios oficiales.

Este texto está dividido en tres partes -estructura, reacciones y temas especiales. Por estructura entendemos la forma geométrica tridimensional de las moléculas, la manera de unirse los átomos, las propiedades fisicas, incluyendo los espectros, que dependen de la estructura y nos informan sobre ella, y la distribucion electronica de las moleculas. Existe solo una docena de clases importantes de compuestos organicos, segun se cuente, y quizas otra docena de clases menos importantes. Se estudian las estructuras de todos estos tipos con mas o menos detalle segun su importancia.