Resultados para "Systema" en Ciencia

In this Very Short Introduction, Paul Klenerman describes the immune system, and how it works in health and disease. He considers how the immune system evolved, the basic rules that govern its behavior, and the major health threats where it is important. Paul Klenerman also explains how things can go wrong when there is too little or too much immunity. The book also addresses what we learned about the immune system from the COVID-19 pandemic and how that has influenced thinking about future pandemics.

A system can describe what we see (the solar system), operate a computer (Windows 10), or be made on a page (the 14 engineered lines of a sonnet). In this book, Clifford Siskin shows that system is best understood as a genre - a form that works physically in the world to mediate our efforts to understand it. Indeed, many Enlightenment authors published works they called "system" to compete with the essay and the treatise.

Living busily on Planet Earth, we rarely remember that we actually inhabit only a miniscule part of the universe. In The Planets and the Solar System, Jen Green paints the wider picture, and takes us on a journey across billions of kilometers in our galaxy, from our Sun to near and distant planets. Some, like Mercury, have a molten core surrounded with crust and spins quickly; Jupiter, on the other hand, is a big ball of gas.

Toxic Water, Toxic System exposes the consequences of a seemingly anonymous authoritarian state willing to maintain white supremacy at any cost—including poisoning an entire city and shutting off water to thousands of people. Weaving together narratives of frontline activists along with archival data, Michael Mascarenhas provides a powerful exploration of the political alliances and bureaucratic mechanisms that uphold inequality.

The American standard system of measurement is a unique and odd thing to behold with its esoteric, inconsistent standards: 12 inches in a foot, three feet in a yard, 16 ounces in a pound, 100 pennies to the dollar. For something as elemental as counting and estimating the world around us, it seems like a confusing tool to use. So how did we end up with it? Most of the rest of the world is on the metric system, and for a time in the 1970s America appeared ready to make the switch.

In 1869, a great mystery was born. As astronomers observed a total solar eclipse, for the first time they saw the faint glow of the solar corona, the sun's outer atmosphere. Measurements of a previously unknown wavelength that made up this solar light sparked hot debate among scientists, but it was another 60 years before they discovered that this wavelength was in fact iron being burned at a staggering three million degrees Celsius. With the sun's surface only 6,000 degrees, this shouldn't be possible.

Over the last decade, scientists have discovered the importance and widespread presence in the body of a remarkable family of proteins known as prion proteins. Research links various types of prion proteins to neurodegenerative diseases such as Parkinson's and Alzheimer's—and this has fueled the search for new drugs that could halt the progression of these terrible disorders. Other discoveries have revealed the essential roles prion proteins play in memory and immunity, and the part they may have played in the beginnings of life on our planet.

Tools of Systems Thinkers shares powerful strategies to organize your thoughts into transparent patterns and find the real roots of your problems to fix them, once and for all. Notice details others miss. See through complexity. Resist jumping to conclusions prematurely. Evaluate information correctly and consistently to make better decisions. Stop sabotaging your self-interest. Overwrite your autopilot with logical and analytical tools. This unique book will give them to you. Learn to utilize mental models and system maps to your greatest advantage.

What is our immune system, and how does it work? A vast array of cells, proteins and chemicals spring into action whenever our bodies are damaged, but immunity is not something you can see, touch, or feel. It can fight off malicious bacteria and viruses, locate cancerous growths, and even rewire our brains—but sometimes our own tissues can get caught in its crossfire, with catastrophic consequences. Humans may be the most disease-ridden animals on the planet. Professor John Trowsdale shows how the immune system protects us, and how our bodies invest huge resources to keep it running.

From the citrus groves of Sicily to a taco in Mexico City, In Search of the Perfect Peach takes you on a journey in the pursuit of flavor, with Franco revealing at every step how this incredibly simple desire can lead to radical change. Throughout, he offers us a deeply optimistic vision of how we as consumers can follow flavor to fix the food system and bring joy to our every meal.

In 1977, two spacecraft were launched from Earth to explore the outer Solar System, and incredibly, the now-ancient technology from the 1970s is still working, sending daily reports back to the planet that sent the two robotic envoys on their way, over 40 years ago. Voyager 1 and 2 have done far more than accomplish their original missions. In fact, they are now exploring interstellar space, far beyond the outer planets, in the cold wasteland between the stars.

In Strange New Worlds, renowned astronomer Ray Jayawardhana brings news from the front lines of the epic quest to find planets—and alien life—beyond our solar system. Only in the past two decades, after millennia of speculation, have astronomers begun to discover planets around other stars—thousands in fact. Now they are closer than ever to unraveling distant twins of the Earth. In this book, Jayawardhana vividly recounts the stories of the scientists and the remarkable breakthroughs that have ushered in this extraordinary age of exploration.

From two of the world's top scientists and one of the world's top science writers (all parents), Dirt Is Good is a Q&A-based guide to everything you need to know about kids and germs. "Is it OK for my child to eat dirt?" Jack Gilbert and Rob Knight are bombarded with questions like this every week from parents all over the world. Google a question like this, and you'll be overwhelmed with answers. The Internet is rife with speculation and misinformation about the risks and benefits of what most parents think of as simply germs, but which scientists now call the microbiome.

Since its 2009 launch, the Kepler satellite has discovered more than 2,000 exoplanets, or planets outside our solar system. More exoplanets are being discovered all the time, remarkable in their variety. Astronomer Michael Summers and physicist James Trefil explore these remarkable recent discoveries: planets revolving around pulsars, planets made of diamond, planets that are mostly water, and numerous rogue planets wandering through the emptiness of space.

A deep dive into the immune system that will forever change how you think about your body, from the creator of the popular science YouTube channel Kurzgesagt—In a Nutshell “Through wonderful analogies and a genius for clarifying complex ideas, Immune is a truly brilliant introduction to...

Today, the Space Race is widely viewed poignantly and fondly as a race to the Moon that culminated with Apollo 11 "winning" the race for the United States. In fact, it encompassed a much broader range of competition between the Soviet Union and the United States that affected everything from military technology to successfully launching satellites that could land on Mars or orbit other planets in the solar system. Moreover, the notion that America "won" the Space Race at the end of the 1960s overlooks just how competitive the Space Race actually was in launching people into orbit.

In 1957 Sputnik launched toward the stars. President Kennedy then announced that the United States would send men to the Moon and then return them to Earth.These pivotal moments sparked an unequaled bound forward in human innovation and scientific exploration. At the heart of this momentous time were the men and women working behind the scenes. Scientists, historians, and astronomers share their memories and contributions from this unparalleled era in essays told in their own words.

One of the few voices to challenge The Guardian's George Monbiot on the future of food and farming (and the restoration of nature) is academic, farmer and author of A Small Farm Future Chris Smaje. In Saying NO to a Farm-Free Future, Smaje presents his defense of small-scale farming and a robust critique of Monbiot’s vision for an urban and industrialized future.

Did you know that in the United States alone, an estimated 345 billion gallons of water are used daily? This shouldn’t be surprising–we live in a world of consumerism, and unfortunately, this even correlates to how we use natural resources like electricity and water. But what are you supposed to do? It’s not like you can just go without water.

The galaxy, the multiverse, and the history of astronomy are explored in this engaging compilation of cosmological "tales" by multiple award-winning science writer Marcia Bartusiak. In 32 concise and engrossing essays, the author provides a deeper understanding of the nature of the universe and those who strive to uncover its mysteries. Bartusiak shares the back stories for many momentous astronomical discoveries, including the contributions of such pioneers as Beatrice Tinsley and her groundbreaking research in galactic evolution.