eBooks de Química, página 11 de 20

Com uma proposta didática baseada em métodos ativos de ensino-aprendizagem, Para Gostar de Química traz um conjunto de situações diversificadas de ensino, como mapas conceituais, problemas que favore

The Mission The EC Tech Report "High-performance Polyurethanes" provides the reader with the basic knowledge to the world of polyurethanes as well as the latest developments in polyurethane coating formulations, explained and presented by the leading coating (raw material) manufacturers. The focus is on bio-based raw materials and isocyanate-free crosslinkers that make PU formulations more environmentally friendly and thus improve the footprint, currently the most important prerequisite for future-proof coating systems. This enables the research team to implement concrete innovative approaches to developing their own polyurethane coatings and to benefit from the latest findings in coating development. All this in a very concise and manageable multimedia format. The Audience Even for newcomers and career changers with a background in chemistry, this report is a valuable resource. It provides a clear introduction and a comprehensive overview of current trends in the industry. It is also recommended for professionals to keep abreast of the latest developments and be prepared for future topics. The Value The reader receives a quick and reliable overview of a trend topic, compiled by the specialist editorial team of the leading trade coatings technology magazine ECJ and is based on the latest articles. In addition, readers have access to exclusive presentations from the leading congress at the ECS and further relevant EC conferences. As a service for the user: there is no need for lengthy research. The reader receives concrete tips and can thus master his core task, the day-to-day formulation of coatings.

Este Livro é um relato de experiência no Ensino de Química em que, além do trabalho protagonista juvenil em apresentações e pesquisas referentes à química orgânica, já no primeiro ano de ensino médio

At present, a highly efficient tool for organic synthesis is the combination of organocatalytic and multicomponent processes. In the organocatalysis reaction it is possible to generate a reactive intermediate with high enantioselectivity and later, in the multicomponent stage, the complexity and structural diversity of the process increases. This strategy allows the synthesis of various analogues of optically active natural compounds and biologically relevant molecules of pharmacological interest, which are essential for human life.The current study, which is divided into three chapters, describes a methodology for the synthesis of tetrasubstituted cliclopentene derivatives from an organocatalytic reaction, followed by a multicomponent Ugi-type reaction under continuous flow regime. The use of green solvents in each reaction step, as well as the adoption of flow chemistry, led to obtaining products with high yield and enantiomerically-enriched in a fast and efficient manner, allowing the development of more sustainable strategies in synthetic chemistry.

Neste livro abrangente e indispensável, mergulhe nas profundezas da engenharia de processos e descubra o coração pulsante da indústria de alimentos e química. Com um foco inigualável nas Operações Un

Nesta obra singular, mergulhe em um universo poético onde a arte encontra a ciência. Este é um livro de poesias ricamente ilustrado, que desvenda os mistérios da bioquímica de maneira única e envolve

Físico-Química é uma unidade do programa do curso de gradução de Química, que indroduz ou desenvolve muitos tópicos distintos. Alguns, como termodinámica e cinética, são prontamente reconhecidos como

In "The History of Chemistry (Vol. 1 & 2)," Thomas Thomson embarks on a meticulous exploration of the evolution of chemistry from antiquity through the early 19th century. His work is characterized by a blend of philosophical inquiry and empirical observation, reflecting the burgeoning intersection of science and society in his time. Thomson elucidates not only the scientific advancements and key figuresAisuch as alchemists, early chemists, and contributors to modern chemical thoughtAibut also the broader intellectual currents that shaped their endeavors. Richly detailed, this scholarly tome serves as a foundational text, charting the disciplines trajectory amidst the cultural and technological shifts of the Industrial Revolution. Thomas Thomson, a noted Scottish chemist and a prominent figure in the scientific community of his era, was deeply influenced by both the Enlightenment ideals and the nascent scientific methodologies that characterized the late 18th and early 19th centuries. His role as a professor and his contributions to the field of chemistry equipped him with a unique perspective, allowing him to critically analyze the historical narratives surrounding the discipline while advocating for its significance. For those intrigued by the origins of modern science, Thomsons "The History of Chemistry" is an indispensable resource. It not only fulfills academic curiosity but also inspires a deeper appreciation for the intricate relationship between chemistry and human progress. Scholars, students, and science enthusiasts alike will find valuable insights within this comprehensive account.

In "The History of Chemistry," Thomas Thomson embarks on a comprehensive exploration of the evolution of chemical science from antiquity to the dawn of the modern era. His meticulous narrative weaves together intricate details about key figures, groundbreaking discoveries, and the philosophical underpinnings that have shaped the discipline. Employing a didactic yet engaging literary style, Thomson incorporates vivid descriptions and historical anecdotes, making complex concepts accessible to a broad audience. This influential text contextualizes the advancements in chemistry within the broader tapestry of scientific inquiry, shedding light on the interconnectedness of various scientific pursuits throughout history. Thomas Thomson, an eminent chemist and historian, was well-placed to undertake this scholarly project, having contributed significantly to the field himself with his research and publications. His firsthand experiences in the laboratory and academia provided him with unique insights into the evolution of chemical thought. Thomsons background in both teaching and research, particularly his role in the establishment of chemical education in Scotland, fueled his passion to document the historical trajectory of chemistry, emphasizing its importance in society and scientific discourse. This book is highly recommended for anyone interested in the development of scientific ideas, for students and scholars alike who wish to gain a deeper understanding of chemistrys rich heritage. Thomsons work serves not only as a historical account but also as an inspiring testament to the relentless pursuit of knowledge, making it a vital addition to the library of any intellectual enthusiast.

Description The new multi-media bundle provides a deep insight into ALTERNATIVES TO BIOCIDES in water-borne coatings with special focus on: - In-can and dry-film preservation: Basic knowledge of preservation in coatings formulations to achieve more environmentally friendly products. - Additives and Fillers: New additives or fillers increase the pH value of the coating to prevent algae growth. - Binder Technology: Making water-borne coatings resistant to microbial spoilage through new binder technologies. - Antimicrobial Coatings: Use of nanomaterials or low-temperature powder coatings to improve antimicrobial surface properties. - Plant Hygiene: Gain new impulses for process-integrated plant cleaning to reduce the use of biocides. In addition, the EC Tech Report includes exclusive market insights, important fundamentals, and an impressive package of digital bonus material.

This is an invaluable work on Boulton and Watt, an early British engineering and manufacturing firm in the business of designing and producing marine and stationary steam engines. It was founded in 1775 as a partnership between the Scottish engineer James Watt and the English manufacturer Matthew Boulton to exploit Watts patent for a steam engine with a different condenser. The firm played a significant role in Industrial Revolution and evolved to be a prominent producer of steam engines in the 19th century. This work was a result of the memoirs of Boulton and Watt. The writer described the formation and evolution of the company as well as details on how they planned and carried out the operations in simple terms. Its a perfect read for people curious to learn about the engineering practices in the olden days.

Discover the new multimedia bundle, providing deep insights into Architectural & Decorative Coatings with special focus on the following aspects: - Emulsion binders: Learn more about the latest developments in coatings formulations. - Bio-based binders: Design the phases carefully for better results than fossil-fuel based binders. - Silicone binders: Hydrophobic silicone resin for high-performance water-borne coatings. - Additives: A green, zero-VOC, clay-based additive reduces the growth of algae, thereby thwarting coating degradation. - Digital assistant: A digital assistant for quantifying coating defects. Exclusive market insights, important fundamentals, and an impressive package of digital bonus material round off this EC Tech Report.

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Química Orgânica: terpenos e rotas de síntese. Terpenos: utilidade, classificação, biossíntese, nomes, funções, reações. Rotas de síntese: síntese do ácido acetilsalicílico.

Reações orgânicas: alcanos; haletos; alcenos; alcinos; oxidação de HC, aldeídos e cetonas; álcoois; ácidos carboxílicos; ésteres: saponificação; éteres: reações com ácidos.

Alicíclicos: Conceito, Classificação, Nomenclatura, Estrutura, Conformação, Estabilidade e Reações.

Química orgânica: carbono, dienos e aromáticos. O átomo de carbono e as cadeias carbônicas. A Química Orgânica. Classificação do átomo de carbono. Hibridação do carbono. Dienos. Aromáticos.

In the meticulously crafted anthology, *A Text-book of Assaying: For the Use of Those Connected with Mines*, the Beringers present a comprehensive collection centered around the precise science and art of assaying. This anthology seamlessly bridges historical accounting with the sophistication of practical methodologies, capturing the old-world techniques alongside modern advancements. The collection is replete with a range of technical practices, each providing invaluable insights into the challenging and often perilous art of extracting and refining precious metals. What stands out in this anthology is its rigorous approach, enabling a deeper appreciation of both the scientific principles and the intuitive processes that drive this craft. J. J. and C. Beringer, as both authors and compilers, bring a wealth of experience and scholarly inquiry to this collection, ingraining the anthology with the rich heritage of the assaying discipline. Their profound understanding of metallurgical science provides coherence, yet encourages exploration into the myriad ways that different cultures and periods have approached the same fundamental challenges. This meeting of historical context and innovative approaches offers readers an enriched understanding of the global and timeless pursuit of mineral refinement. This anthology is indispensable for readers seeking a profound understanding of assaying. It offers a rare opportunity to traverse the broad spectrum of methods practiced by experts across generations. As a textual resource, it invites readers to participate in a dialogue between past and present, broadening perspectives while serving as an educational touchstone. Whether youre an industry professional or an academic enthusiast, this collection promises to illuminate the evolution and the intricacies of an enduring global tradition.

In "Zetetic Astronomy: Earth Not a Globe!", Parallax employs an argumentative style that challenges the prevailing heliocentric models of his time, positioning the Earth as a flat plane rather than a globe. Through meticulous observation and an array of rhetorical techniques, the author scrutinizes the science of astronomy, proposing a zetetic method Ai one rooted in empirical evidence derived from personal observation. His treatise engages with contemporary debates in 19th-century science, reflecting a burgeoning skepticism toward established scientific norms and the increasing accessibility of scientific literature to the layperson. Parallax, an elusive figure often associated with the early flat Earth movement, channels the intellectual currents of his era that sought to democratize knowledge. His background in skeptical inquiry likely influenced this work, as did the profound cultural shifts characterized by the questioning of authority in realms of thought, including religion and science. The book not only critiques astronomical conventions but also serves as a precursor to later dissident scientific perspectives, empowering readers to trust their observations over prevailing theories. This provocative text is essential reading for those interested in the history of scientific thought, dissenting philosophies, and the nature of empirical inquiry. Parallaxs arguments invite readers to engage critically with the foundations of astronomical science, making it a valuable addition to the libraries of scholars, students, and anyone intrigued by the intersection of science and ideology.

Este livro descreve a construção de um espectrofotômetro UV-Vis multicanal e sua aplicação na análise da cinética-química da reação de oxidação do permanganato de potássio em meio básico (NaOH). Atra