D'autres livres qui pourraient vous intéresser

• 

  The Black Death - Plague and...

  Harris Ropes

  • 0
  • 0
  • 0

  The story of the Black Death begins long before it reached the shores of Europe. At the heart of the devastation was a bacterium called Yersinia pestis, the microorganism responsible for one of the deadliest pandemics in human history. This pathogen is believed to have originated in the arid plains of Central Asia, where it lived in a natural reservoir within rodent populations, particularly marmots. These animals, though mostly isolated in remote areas, became the starting point for a chain of transmission that would eventually span continents. 
  Early outbreaks of plague-like illnesses were recorded in China and other parts of Asia as early as the 13th century, suggesting that the bacterium was already circulating in the region. However, it was the growing network of trade routes, especially the Silk Road, that allowed the disease to move rapidly from one community to another. Merchants, caravans, and travelers unknowingly carried infected fleas and rats from one trading hub to the next, creating a direct path for the disease to follow. 
  One of the most significant early episodes linked to the Black Death's arrival in Europe occurred during the Mongol siege of the Crimean city of Caffa (modern-day Feodosiya) in 1346. According to some historical accounts, the Mongols, after suffering an outbreak in their own ranks, used the infected corpses of their dead as biological weapons by catapulting them over the city walls. While the historical accuracy of this account is debated, it symbolizes the critical role Caffa played as a point of transmission. From this port city, fleeing Genoese merchants are believed to have carried the disease back to Italy by ship, bringing the plague directly into European trading centers.

  Voir livre

• 

  Science - Foundations and...

  Jeron Iris

  • 0
  • 0
  • 0

  This book contains the following titles:  
  Agriculture: Innovative Techniques for Sustainable Food Production and Resource Management 
  Applied Physics: Practical Solutions for Engineering, Technology, and Everyday Life 
  Astrobiology: Exploring the Possibility of Life Beyond Earth 
  Astrophysics: Understanding the Universe, from Black Holes to Cosmic Origins 
  Biochemistry: The Chemistry of Life, Molecular Foundations of Health and Disease 
  Biology: Uncovering the Complexities of Life and the Natural World 
  Botany: The Science of Plants, Ecology, and Applications 
  Chemistry: Reactions, Compounds, and Discoveries Shaping Our World 
  Ecology: Understanding Ecosystems and the Interconnectedness of Life 
  Environmental Science: Challenges and Solutions for a Healthier Planet 
  Genetics: The Blueprint of Life, Genes, and Inheritance 
  Microbiology: The Invisible World, Microbes, Health, and Global Impact 
  Physics: Exploring the Laws of Nature from Quantum to Cosmic Scales 
  Sustainability: Pathways to a Greener Future for Society and the Environment 
  Zoology: The Diversity of Animal Life, and Their Behavior and Conservation

  Voir livre

• 

  My Cat Hates My Vet! - Foiling...

  Amy Shojai

  • 0
  • 0
  • 0

  HALT THE HISSES! 
  We want to provide the best care possible for our beloved cats, but what do you do when your kitty turns into a wildcat at the vet? Cats visit veterinarians less often because their owners hate to see them upset and afraid of the cat carrier, car ride, and stranger handling. 
  MY CAT HATES MY VET! packs prescriptive advice into a short how-to guide that offers step-by-step instructions to help your cats learn to LOVE the vet, accept the cat carrier, and tolerate car rides--and get the medical care they need and deserve. This is your definitive guide for foiling feline fear. From one of America's best known pet care authorities, you'll learn:7 Reasons Cats HATE The Vet12 Ways to Soothe FearBest Carriers & 8 Cat Crate Tips9 Calming Cat Car Ride TechniquesHow to Choose the Best VeterinarianWhat are Cat Friendly Practices & Fear Free ClinicsWays to Stop Cat-to-Cat Aggression After Vet Visits 
  With a fun conversational tone and easy proven techniques, MY CAT HATES MY VET! helps ensure your loving bond remains strong and intact.

  Voir livre

• 

  The Physics of Everyday Things -...

  Mark Hedges

  • 0
  • 0
  • 0

  Motion is a fundamental aspect of the physical world, affecting everything we do and experience. From walking down the street to driving a car, the principles of motion are always at work. In physics, understanding the forces that cause and influence motion is essential to understanding how objects behave in the world around us. This chapter will explore Newton's laws of motion and the application of forces in our daily lives, helping to make sense of the movements and actions that shape our experiences. 
  At the heart of motion is Newton's First Law, also known as the Law of Inertia. This law states that an object will remain at rest or in uniform motion unless acted upon by an external force. Essentially, things like to keep doing what they’re doing. For instance, a car coasting down the highway will continue moving unless the brakes are applied, or friction slows it down. This simple concept explains why, when you're in a car that suddenly stops, you feel as if you're still moving forward—your body wants to keep going, even though the car has halted. The application of this principle is not limited to vehicles but can be observed in everyday activities, like pushing a shopping cart or standing still on a bus that starts to move. 
  Newton's Second Law, the Law of Acceleration, takes it further. It tells us that the force applied to an object is equal to its mass times its acceleration (F = ma). This means that heavier objects require more force to accelerate, while lighter objects can be moved more easily. When you push a sled across the snow, the amount of effort you need depends on how much the sled weighs and how fast you want it to move. This relationship helps explain why it’s harder to get a heavy truck moving than a small bicycle. Understanding this law helps us calculate everything from how much effort it takes to lift an object to how quickly a rocket can launch into space.

  Voir livre

• 

  Neural Networks For Beginners -...

  Rayan Murray

  • 0
  • 0
  • 0

  This comprehensive guide is tailored for beginners, providing a clear and accessible introduction to the captivating world of neural networks. Whether you're a student eager to grasp the fundamentals or an enthusiast seeking to unravel the mysteries of AI, this book serves as your gateway to the transformative realm of neural networks. 
  Starting with the basics, the book explores the fundamental concepts, drawing inspiration from the intricacies of the human brain. Readers will delve into the different types of neural networks, from feedforward to recurrent and convolutional architectures, gaining a nuanced understanding of their diverse applications. 
  With a strong foundation laid, the book navigates through the mathematical underpinnings of neural networks, making concepts like linear algebra and calculus accessible to all. The journey continues with practical insights into popular frameworks like TensorFlow and PyTorch, guiding readers in selecting the tools that suit their needs. 
  Armed with this knowledge, readers will embark on the exhilarating process of building their first neural network. From data preparation to network architecture, the book demystifies each step, ensuring readers are equipped to undertake this exciting endeavor. Training the neural network is explored in depth, covering essential topics like loss functions, backpropagation, and gradient descent. 
  "Neural Networks Unveiled" is not just a guide; it's an invitation to join the ranks of those shaping the future of artificial intelligence. Whether you aspire to contribute to cutting-edge research or apply neural networks to real-world challenges, this book empowers you to take the next step in your AI journey. Unveil the secrets of neural networks and embark on a transformative adventure into the boundless possibilities of artificial intelligence. 
   

  Voir livre

• 

  HIV - AIDS - Living Positively...

  Lilly Richardsen

  • 0
  • 0
  • 0

  Receiving an HIV diagnosis can be life-altering, bringing a wave of emotions, uncertainties, and concerns about the future. Many individuals initially experience fear, confusion, or even denial, as the stigma surrounding HIV remains a significant challenge worldwide. However, the reality of living with HIV today is vastly different from what it was decades ago. Thanks to medical advancements, education, and growing awareness, people with HIV can lead long, fulfilling lives with proper treatment and care. 
  One of the most critical aspects of living with HIV is understanding that it is a manageable condition. Antiretroviral therapy (ART) has transformed the outlook for those diagnosed, helping them maintain undetectable viral loads and reducing the risk of transmission. This medical breakthrough has empowered individuals to take control of their health, ensuring that an HIV diagnosis is no longer a death sentence. With adherence to treatment, many people with HIV have the same life expectancy as those without the virus. 
  Despite these advancements, stigma and discrimination continue to be significant obstacles. Misconceptions and outdated beliefs about HIV can lead to fear and isolation, affecting mental and emotional well-being. Many individuals struggle with disclosing their status due to concerns about rejection or discrimination in their personal and professional lives. Overcoming these barriers requires ongoing education and advocacy, as well as fostering a more inclusive and supportive society. Open discussions, accurate information, and strong support networks play a crucial role in breaking down these barriers.

  Voir livre