Ebooks de ciencias, página 14 de 704

A few lines will suffice to explain why we have compiled the present volume, to what wants it responds, and what its sphere of usefulness may possibly embrace.In our teaching of plastic anatomy, especially at the Ecole des Beaux-Artswhere, for the past nine years, we have had the very great honour of supplementing the teaching of our distinguished master, Mathias Duval, after having been prosector for his course of lectures since 1881it is our practice to give, as a complement to the study of human anatomy, a certain number of lessons on the anatomy of those animals which artists might be called on to represent.Now, we were given to understand that the subject treated in our lectures interested our hearers, so much so that we were not surprised to learn that a certain number repeatedly expressed a desire to see these lectures united in book form.Edouard CuyerGENERALITIES OF COMPARATIVE ANATOMYOf the animals by which we are surrounded, there are some which, occupying a place in our lives by reason of their natural endowments, are frequently represented in the works of artistseither as accompanying man in his work or in his amusements

An Inquiry into the Nature and Causes of the Wealth of Nations, generally referred to by its shortened title The Wealth of Nations, is the magnum opus of the Scottish economist and moral philosopher Adam Smith. First published in 1776, the book offers one of the worlds first collected descriptions of what builds nations wealth, and is today a fundamental work in classical economics. By reflecting upon the economics at the beginning of the Industrial Revolution, the book touches upon such broad topics as the division of labour, productivity, and free markets.The Wealth of Nations was published 9 March 1776, during the Scottish Enlightenment and the Scottish Agricultural Revolution. It influenced several authors and economists, such as Karl Marx, as well as governments and organisations, setting the terms for economic debate and discussion for the next century and a half. For example, Alexander Hamilton was influenced in part by The Wealth of Nations to write his Report on Manufactures, in which he argued against many of Smiths policies. Hamilton based much of this report on the ideas of Jean-Baptiste Colbert, and it was, in part, Colberts ideas that Smith responded to..

"The Skull That Lied The bone hoax that fooled science for forty years" investigates the most successful scientific fraud of the 20th century: Piltdown Man. In 1912, amateur archaeologist Charles Dawson claimed to have found the "Missing Link" between apes and humans in a gravel pit in England. For decades, this skull was the pride of British science, cited in textbooks and museums.Science writer Nathan Coal reveals the embarrassing truth discovered in 1953: The skull was a medieval human cranium combined with the jaw of a modern orangutan, stained with chemicals and filed down to look old. The book explores why the scientific community was so easily dupedbecause they wanted it to be true. It appealed to their nationalism (the first human was British!) and their existing theories."The Skull That Lied" is a lesson in confirmation bias. It shows that even the smartest experts can be blinded by their own desires, and that skepticism is the most important tool in the search for truth.

"The Atmospheric Assassin The inventor who accidentally poisoned the entire planet" tells the biography of Thomas Midgley Jr., often cited as the single organism that had the most destructive impact on the atmosphere in Earths history. A brilliant chemist for General Motors, Midgley solved the problem of engine "knocking" by adding lead to gasoline. Despite knowing it was toxic (he poisoned himself during demos), he pushed it into the global market.Author Oliver Haze recounts how Midgley later tried to solve the problem of dangerous refrigerants and invented Freon (CFCs)the very gas that tore a hole in the ozone layer. The book culminates in his tragic, ironic death: paralyzed by polio, he invented a pulley system to lift himself out of bed, which eventually entangled and strangled him."The Atmospheric Assassin" is a grim study of short-term solutions causing long-term catastrophes. It explores the hubris of industrial chemistry and the decades-long fight to remove lead from the environment.

What stories make childhood unforgettable?The Complete Beatrix Potter Collection Vol. 1 brings together the earliest and most beloved tales by Beatrix Potter, one of the worlds most cherished childrens authors. Featuring charming animal characters, gentle humor, and timeless lessons, these stories have delighted families for generations.From the mischievous adventures of Peter Rabbit to the cozy countryside world Potter lovingly created, each tale blends imagination, warmth, and moral insight in simple, memorable storytelling. Her stories encourage kindness, curiosity, and respect for naturemaking them as meaningful today as when they were first written.This collection is ideal for reading aloud, independent young readers, and adults revisiting a treasured classic.Inside this eBook, youll enjoy:Classic Beatrix Potter stories in one volumeBeloved characters and gentle life lessonsTimeless storytelling perfect for children and familiesA cornerstone collection of classic childrens literatureRead at bedtime, shared across generations, and loved worldwide, Beatrix Potters tales remain essential reading for every family library.Open the door to a world of gentle adventure and timeless charm. Buy now and enjoy Volume 1 of the Complete Beatrix Potter Collection.

Em um contexto de acelerada degradação ambiental – visível nos incêndios que devastam florestas, nos rios adoecidos, na poluição do ar e nos demais eventos climáticos extremos – o Direito é chamado a

Transformar resíduos em soluções sustentáveis é o desafio do nosso tempo. Em "Biotecnologia e Sustentabilidade: o poder do soro lácteo na bioprodução de etanol – convertendo problemas ambientais em e

"The Dangerous Zero The heretical number that the church tried to ban" tells the biography of a number. For centuries, the West relied on Roman numerals, a clumsy system that had no concept of "nothing." The idea of a void was terrifying to the medieval Church, which associated emptiness with the devil. Zero had to be imported from India and the Arab world, smuggled in by merchants like Fibonacci.Science writer Benjamin Scott traces the battle between the Abacists (conservatives) and the Algorists (innovators). The book explains how the acceptance of zero allowed for the birth of calculus, negative numbers, and modern physics. It is a story of how a mathematical concept clashed with theology."The Dangerous Zero" reveals that the most powerful number is the one that represents nothing. It shows how the acceptance of the void was the necessary first step for humanity to understand the infinite universe.

Aristotle compiles a massive encyclopedia of zoological observations, cataloging the differences and similarities between hundreds of species. The text focuses on the functional anatomy of animals, their reproductive methods, and their behaviors in the wild. It represents the birth of biology as an empirical science, moving from anecdote to systematic classification. The work demonstrates a profound curiosity about the natural world, seeking to find order and purpose in the diversity of life.

Grouping several short investigations, this text explores the essential physiological functions that sustain life, such as breathing and the regulation of body heat. Aristotle connects the stages of youth and old age to the strength of the vital fire within the heart, viewing death as the eventual extinguishing of this internal heat. The work also considers the phenomena of sleep and dreams as byproducts of sensory processes. It provides a detailed biological account of the life cycle and the maintenance of the living organism.

This cosmological study presents a universe composed of concentric spheres, with the earth fixed at the center and the heavens moving in eternal circles. Aristotle differentiates the corruptible matter of the earth from the incorruptible "aether" of the stars, establishing a dual physics for the cosmos. The text argues for the finiteness of the universe and explores the properties of heavy and light bodies. It is a grand attempt to systematize the physical structure of the entire universe based on observation and logical deduction.

La importancia del arsénico ha radicado, durante siglos fundamentalmente, en sus propiedades como potente veneno. En la actualidad, el conocer el efecto de la actividad antropogénica en el medio ambiente, asi como su incidencia negativa en la salud humana, ha contribuido a aumentar el interes por su determinacion en una gran variedad de muestras. La especiacion de arsenico presenta un particular interes debido a la diferente toxicidad de sus especies quimicas. Asi por ejemplo el As (III) y As (V) son especies altamente toxicas, mientras la AsB es practicamente inocua. Por otra parte, la especiacion de arsenico en organismos marinos tiene un interes especial importante debido a que su tendencia a acumular arsenico es superior a la de los organismos terrestres.

Criar peixes de estimação é um dos hobbies mais gratificantes e relaxantes, mas os cuidados adequados vão muito além de simplesmente encher um aquário com água. Este e-book é um guia prático e acessí

Prezado(a) Amigo(a),Você está pensando em adquirir um novo animal de estimação para sua família? Talvez esteja considerando várias possibilidades diferentes, ou talvez já tenha decidido que um pássar

Tener peces como mascotas es uno de los pasatiempos más gratificantes y relajantes, pero un cuidado adecuado va mucho más allá de simplemente llenar un acuario de agua. Este ebook es una guía práctica y accesible, diseñada para ayudar tanto a principiantes como a acuaristas experimentados a proporcionar un entorno saludable, seguro y enriquecedor para sus animales acuaticos."Cuidados que debe tener con sus peces" explica los principios esenciales del cuidado de los peces de forma clara y sencilla. Los lectores aprenderan a elegir el acuario adecuado, comprender la calidad del agua, mantener una filtracion adecuada y crear condiciones equilibradas que promuevan la salud y la longevidad de los peces. El libro abarca temas importantes como el control de la temperatura, los niveles de oxigeno, el tamaño del acuario y la importancia de la limpieza y el mantenimiento regulares.La guia tambien aborda uno de los desafios mas comunes para los dueños de peces: la alimentacion. Descubrira como seleccionar el alimento adecuado para diferentes especies, evitar la sobrealimentacion y reconocer las señales de desequilibrio nutricional. Ademas, el libro destaca los problemas de salud comunes en los peces, como identificar las señales de alerta tempranas y que medidas preventivas pueden reducir el estres y las enfermedades. Mas alla del cuidado tecnico, este ebook enfatiza la tenencia responsable de mascotas y el bienestar animal. Esta guia ayuda a los lectores a comprender el comportamiento de los peces, la compatibilidad entre especies y como crear un entorno que minimice el estres, promoviendo actividades naturales y el bienestar.Tanto si se inicia en el mundo de los acuarios como si busca mejorar el suyo, esta guia ofrece consejos practicos que pueden marcar la diferencia en la vida de sus peces. Con los conocimientos adecuados y el cuidado diario necesario, su acuario puede convertirse en un ecosistema prospero y tranquilo, y este ebook le muestra exactamente como lograrlo.

Prezado(a) Amigo(a),Houve momentos em que voce, como dono(a) de um cachorro, se sentiu cada vez mais frustrado(a). Seu co no quer obedecer aos seus comandos e fazer o que voce manda. Mesmo tentando persuadi-lo(a), as vezes no funciona.Todos os ces tem problemas de comportamento. No importa a raça; voce pode se deparar com obstaculos ao tentar faze-lo(a) parar com o mau comportamento. Ha momentos em que voce precisa ser firme e lidar com a situaço. Seu co fara o que voce diz ou voce o mandara embora. E claro que, se voce ama ces, no quer fazer a segunda opço.Os ces ainda so e sempre sero os melhores amigos do homem, mas tambem precisam se comportar como tal. Um comportamento cada vez pior no os ajudara a manter a boa vontade de seus donos. Os donos de ces que buscam uma soluço para esse problema precisaro se adaptar a metodos de adestramento comportamental que faro com que seus ces mudem completamente de comportamento.Aqui esto alguns dos motivos pelos quais seu co pode se comportar mal:Seu co no esta acostumado a ficar separado de voce por um periodo de tempo.Ha falta de comunicaço entre voce e seu co.Voce no esta reforçando os comandos que seu co precisa obedecer.Voce no esta sendo consistente em fazer com que seu co mude seus maus habitos.Voce esta permitindo que outros façam o oposto do que voce esta tentando ensinar ao seu co.Existe uma soluço...Com o guia de Obediencia Canina (Adestre Seu Co Eficazmente para ACABAR com os Problemas de Comportamento!), voce, como dono, podera fazer mais pelo seu co em termos de faze-lo obedecer aos seus comandos. Ele precisa aprender a ser obediente e a fazer o que voce diz, dentro do razoavel. Ele precisa entender que voce e o dono e que deve respeita-lo como tal. Ele precisa compreender que a desobediencia no sera mais tolerada em sua casa.E melhor começar o adestramento quando ele ainda e filhote. Tambem e mais facil começar quando eles ainda so jovens. Quanto mais voce esperar, mais dificil sera faze-los obedecer as suas ordens. Ces so como crianças. Voce precisa ensina-los o que devem fazer. Quando fizerem algo errado, voce precisa disciplina-los e corrigi-los para que façam da maneira correta.Voce precisa comunicar ao seu co qual comportamento e aceitavel e qual e inaceitavel. Eles precisam saber qual e a sua posiço em relaço a tudo. Voce precisa ser consistente e garantir que eles saibam que voce esta falando serio.

Adestrar um gatinho pode ser confuso, frustrante e até mesmo assustador para donos de gatos de primeira viagem. Ao contrário dos cães, os gatinhos não respondem a comandos da mesma forma, e mal-enten

The cycles of birth and decay in the physical world are the subject of this scientific inquiry, which explains how elements transform into one another. Aristotle debates the concepts of mixture and growth, refuting earlier atomist theories in favor of a continuous material substrate. The text details how the interaction of hot, cold, wet, and dry qualities drives the perpetual motion of the sublunary sphere. It is a foundational text for understanding the ancient view of chemistry and the conservation of matter.

A universe explained through reason and law. This work presents Newtons mature vision of the physical universe, clarifying the principles behind motion, gravity, and cosmic order. It serves as a bridge between mathematical theory and natural philosophy. Essential reading for the history of science and physics.Explore the framework that defined an era. Why This Edition? Complete original scientific text Clean structured formatting Clickable Table of Contents Optimized navigation for reference Carefully proofread

Desde los clásicos trileros hasta los estafadores de criptomonedas, esta es la apasionante historia de los charlatanes y de por qué caemos una y otra vez en sus trampas.Durante siglos, los charlatanes han vivido de engañar a sus victimas. Hoy, la charlataneria es mas global y lucrativa que nunca. Gracias al poder de la tecnologia, los embaucadores de nuestra epoca han tejido una red de fraudes a una escala sin precedentes.En Charlatanes, el escritor y columnista especializado en asuntos internacionales Moises Naim y el periodista y politologo Quico Toro investigan como los nuevos timadores nos engañan con las mismas tecnicas que se utilizaban en el lejano Oeste: se ganan nuestra confianza, nos hacen creer que son los mayores valedores de nuestros sueños y luego nos explotan para su propio beneficio. En cierto modo, nada ha cambiado excepto una cosa: estos charlatanes son ahora digitales, virales y globales. Sean tanto gurus de la salud que promueven sus productos pseudocientificos como politicos que ocupan los puestos de mayor relevancia del escenario global, los timadores modernos acumulan audiencias de una punta a otra del planeta gracias a internet y las redes sociales, sirviendose de un conjunto de estrategias comunes y actuando con suma rapidez, mientras nuestras lentas instituciones luchan por responder.Repleto de ideas sobre como no caer en todo tipo de estafas ni en la charlataneria populista, este libro es un viaje revelador a traves del engaño descarado y la brutal victimizacion que se encuentran en el corazon de esta nueva lacra mundial.La critica ha dicho:El mundo siempre ha estado lleno de estafadores y timadores. Pero, ¿alguna vez te has preguntado por que somos tan vulnerables a sus trucos? ¿Y por que parecemos particularmente susceptibles a ellos en nuestros dias? Moises Naim y Quico Toro han escrito un libro fascinante que narra la historia, nos da explicaciones e incluso ofrece algunas ideas sobre que hacer con estos charlatanes. Fareed Zakaria Vivimos en una era de mentirosos, farsantes, timadores y charlatanes. Moises Naim y Quico Toro explican como ha ocurrido esto y lo que significa, con una prosa elocuente, urgente. Anne Applebaum Un analisis mordaz sobre los engaños y sobre por que caemos en ellos.Library Journal Los autores demuestran como cualquiera de nosotros puede caer facilmente en la trampa, porque lo que mejor saben hacer los charlatanes es devolvernos el reflejo de nuestros sueños. Frente a un arsenal de tecnologias explotadoras, comprender nuestras vulnerabilidades es el mejor escudo.Kirkus