Ebooks de ciencias, página 8 de 704

La metrología es el lenguaje común de todo laboratorio, incluido el clínico, porque hace comparables y confiables las mediciones que sustentan decisiones técnicas y clínicas. Según el Vocabulario internacional de metrologia, es la ciencia de la medicion y su aplicacion abarca e incorpora los aspectos teoricos y practicos de medir en cualquier campo. Este enfoque trasciende ambitos y se aplica en la industria de alimentos, en el sector farmaceutico y en el area ambiental, todos con impacto en la salud. Asi, los datos generados en contextos distintos pueden interpretarse con seguridad, seguir tendencias y evaluar cambios con relevancia clinica.Aplicada al laboratorio clinico, la metrologia implica trabajar con unidades del Sistema Internacional, asegurar la trazabilidad de los resultados y estimar la incertidumbre con criterios explicitos. Tambien exige el uso de materiales y metodos de referencia reconocidos internacionalmente y la alineacion con normas como la ISO 15189, junto con marcos para ensayos in vitro como ISO 17511 y los recursos del JCTLM. Esta articulacion fortalece la comparabilidad entre equipos, sitios y periodos, y respalda la validez clinica de los informes.Este libro traduce esos principios a la practica cotidiana del laboratorio. Ofrece criterios para seleccionar y verificar equipos, procedimientos claros para documentar la confirmacion metrologica y orientaciones para calcular la incertidumbre. Las magnitudes y tecnicas tratadas se eligieron por su uso transversal en salud y en areas afines; por ello se profundiza en pesaje, preparacion volumetrica con micropipetas con enfasis en la calibracion gravimetrica, medicion de temperatura y pH, y verificacion del desempeño en espectrofotometria UV-vis. El resultado es una guia precisa para estudiantes, docentes y profesionales que invita a medir mejor para decidir mejor, con resultados trazables que respaldan la atencion del paciente y favorecen la comparabilidad entre sectores.

La vertiginosa carrera por el desarrollo de las armas de destrucción masiva.«Un relato trepidante y electrizante.» Booklist «Preston explica hábilmente los momentos clave de la era preatómica y tej

Un caballo nunca es solo un caballo. Es historia, cuerpo, poder y pérdida. En estas meditaciones personales y filosóficas, Federico Galende explora la figura del caballo como animal nunca apropiable y como signo politico y cultural. Desde las sierras de Cordoba y la potranca de su infancia hasta las caidas de San Pablo, las pinturas de Ivana de Vivanco o el monumento de Baquedano, el libro traza un recorrido que une experiencia, pensamiento y literatura. El caballo aparece como compañero y como fuerza extraña entre lo domesticado y lo salvaje. Con un lenguaje preciso y reflexivo, Galende piensa la justicia, la historia y la fragilidad humana desde la mirada de un animal que nunca termina de ser nuestro. Un libro entre el ensayo y la memoria, que interroga la intensidad de un vinculo persistente y enigmatico.

Conozca cómo los ecologistas restauran las interacciones perdidas entre animales, plantas y perturbaciones naturales, elementos que conforman la esencia de los ecosistemas prósperos. Un análisis de un pasado en el que la industrializacion y la globalizacion degradaron nuestros pastizales. Proyectos actuales diseñados para recuperar ecosistemas tenaces y atisbar el futuro con diez predicciones para un planeta sometido al rewilding. Al combinar hermosas imagenes de historia natural con diagramas de flujo infograficos que describen las interacciones de ecosistemas que han alcanzado el exito, se explora todo un mundo nuevo repoblado con ejemplares salvajes de caballos, bovinos, bufalos, castores y lobos. Las Naciones Unidas han declarado 2020-2030 Decenio sobre la Restauracion de los Ecosistemas. Podemos reconstruirlos y crear un futuro prospero para las personas y la naturaleza. ¡Lo unico que hace falta es que, como colectivo, decidamos ir a por ello!

Un collar de cuero con hebilla y anillo de bronce es un libro singular por el tema que aborda el autor y por los documentos que reproduce: más de doscientos avisos de perros extraviados recogidos de la prensa de la ciudad de Mexico, entre los años de 1784 y 1884.Salvador Avila concibe los avisos de perros extraviados, no como testimonios efimeros o intrascendentes, sino como documentos ejemplares que nos ayudan a comprender como era la relacion que tenian los individuos en el pasado con esos animales, y a repensar la manera como hoy en dia nos relacionamos con ellos.Un recorrido de un siglo expuesto en pocas paginas, donde la literatura y la historiografia se confunden, "ya que algunos de estos insertos pueden leerse, con un poco de imaginacion, como microcuentos o microrrelatos; o bien, pueden convertirse en el inicio de algunos de ellos", como sugiere el autor.**Salvador Avila es doctor en Historia por la Universidad Iberoamericana de la ciudad de Mexico. A lo largo de casi treinta años, se ha entregado a la tarea de investigar y escribir acerca de los animales, en particular alrededor de los perros, desde diferentes perspectivas y con base en una diversidad de fuentes. En 2022, esta casa editorial publico su libro Voces y ladridos. Los perros de la ciudad de Mexico. De la conquista al porfiriato.

Este libro aborda el impacto que las medidas de mitigación al cambio climático, mediante la disminución del consumo de energía y a la guerra a los combustibles fósiles para reducir las emisiones de CO2, han tenido y seguiran teniendo en Occidente. En particular, expone las caracteristicas principales de las energias renovables en la generacion electrica; explica por que es inevitable el aumento del costo de la electricidad al usarlas; revela su escasa incidencia en la disminucion de emisiones de CO2; expone el daño ecologico que causan y las consecuencias economicas en extremo adversas para los paises que las utilizan, desafiando abiertamente el demencial delirio de alcanzar emisiones cero-neto hacia 2050. Para Chile examina la incidencia de las renovables en el costo de la electricidad y hace un analisis comparativo del grado de penetracion renovable en nuestro pais con respecto a las Americas y al mundo, finalizando con un conjunto de recomendaciones para el sector electrico y de energia en un "Programa de Energia para Chile 2026 2030".

ADHD and Mindfulness for Beginners Struggling to quiet your racing thoughts or stay present in the moment? ADHD and Mindfulness for Beginners is your gentle guide to finding focus, calm, and balance even in the middle of mental chaos. Designed especially for the ADHD mind, this book shows you how to: Practice mindfulness in simple, realistic ways Reduce anxiety and impulsivity through awareness Build emotional resilience and inner peace Reconnect with your body, breath, and purpose You dont need hours of meditation or perfect concentration just a few mindful moments each day can transform how you think, feel, and live. Slow down your mind. Focus your energy. Discover the peace thats been waiting for you all along.

ADHD in Adult Life: How to Deal With Responsibilities Without Freaking Out Struggling to juggle work, relationships, and daily chaos? This groundbreaking guide is your roadmap to thrivingnot just survivingwith ADHD in adulthood. Inside, youll discover practical tools to manage distractions, boost productivity, and finally take control of your time and emotions. Learn how to transform overwhelm into focus, anxiety into confidence, and chaos into calm. Whether youre facing endless deadlines, household responsibilities, or emotional burnout, this book will help you navigate adult life with clarity, purpose, and balance. Turn your ADHD from a challenge into your greatest strength and start living the focused, fulfilling life you deserve!

ADHD: How to Maintain Healthy Habits Struggling to stick to routines and healthy habits because of ADHD? Discover a practical guide that helps you build consistency, stay motivated , and make positive changes last.Learn actionable strategies for managing time , creating achievable goals , and maintaining habits that support both your mind and body . Say goodbye to frustration and hello to balance, energy , and well-being every day.Take control of your life , build routines that stick , and enjoy the lasting benefits of a healthier, happier you .

ADHD: Simple Techniques to Achieve More Discover powerful yet easy-to-use strategies to boost focus, stay organized, and reach your goalswithout feeling overwhelmed. This practical guide is designed for adults with ADHD who want real results in everyday life. Learn how to manage distractions, beat procrastination, and turn your energy into productivity through small, consistent changes that truly work. Backed by science and filled with actionable tips, this book helps you create habits that lead to lasting success and confidence. Unlock your potential, simplify your routine, and start achieving moreone step at a time!

ADHD: Stress-Free Planning Do you dream of organizing your life without the chaos, guilt, or burnout that often comes with ADHD? ADHD: Stress-Free Planning is your ultimate roadmap to creating structure with ease turning overwhelm into calm, and distraction into focused action. With simple, science-backed strategies and real-world examples, youll discover how to: Build planning systems that actually work for the ADHD brain Manage time without pressure or perfectionism Stay consistent while embracing flexibility Turn daily stress into clarity and control This book transforms planning from a burden into a superpower helping you design a life that flows instead of fights against your nature. No more chaos. No more stress. Just clear focus and freedom one plan at a time.

ADHD and Relaxation Techniques in 5 Minutes Feeling restless, overwhelmed, or unable to slow down? This quick and effective guide teaches you how to relax your mind and body in just five minutesperfect for busy people living with ADHD. Discover simple breathing methods, mindfulness exercises, and grounding techniques designed to calm racing thoughts and restore focus fast. No complicated routines, no long commitmentsjust easy, science-based practices you can use anytime, anywhere. Take a deep breath, find your balance, and learn how five minutes a day can transform your focus, mood, and energy!

ADHD and Cognitive Therapy: Reprogram Your Emotions Take control of your thoughts and emotions with the power of Cognitive Behavioral Therapy (CBT)! This transformative guide shows how people with ADHD can break negative cycles, reduce anxiety, and build emotional resilience through simple, practical steps. Learn how to identify unhelpful thinking patterns, challenge self-doubt, and reframe your mindset for clarity and confidence. Packed with real-life examples, easy exercises, and proven strategies, this book helps you create lasting emotional balance and self-awareness. Reprogram your mind, reshape your emotions, and rediscover the calm, confident version of yourself thats been waiting to emerge!

ADHD: Turning It into a Superpower Complete Guide to Unlocking Your Potential What if your ADHD isnt a limitationbut your greatest strength? This transformative guide shows you how to harness your ADHD traits to boost creativity, confidence, and unstoppable focus. Packed with science-based insights, real-life success stories, and practical tools, this book helps you turn impulsivity into innovation, restlessness into motivation, and distraction into laser-sharp productivity. Learn how to master your mind, build powerful habits, and channel your unique energy to achieve personal and professional success. Stop fighting your ADHD. Start embracing itand unlock the extraordinary potential thats been inside you all along!

ADHD Relationships: How to Connect in a Healthy Way Love doesnt have to feel like a roller coaster. ADHD Relationships is your compassionate guide to building stronger, calmer, and more fulfilling connections whether with a partner, family member, or friend. Through real-life stories and expert insights, youll learn how to: Communicate clearly and reduce misunderstandings Manage emotional intensity and impulsivity Build trust and stability in your relationships Create connection without losing your individuality This book shows that ADHD and healthy relationships can coexist beautifully. With empathy and actionable tools, it helps you turn emotional chaos into deeper understanding and genuine intimacy. Love with awareness. Connect with balance. Build relationships that truly thrive.

ADHD: Understand Easily Confused about what ADHD really is? This clear and accessible guide breaks down everything you need to knowwithout the medical jargon or overwhelming details. Learn how ADHD affects focus, emotions, and daily life, and discover simple ways to manage challenges with confidence and compassion. Perfect for anyone who wants quick, practical insights, this book turns complex information into easy-to-understand explanations that make sense. Understand ADHD in a simple, human, and empowering wayand take the first step toward awareness, acceptance, and positive change.

ADHD and Digital Organization: How to Control Files, Tasks, and Ideas Overwhelmed by endless tabs, lost files, and forgotten to-do lists? ADHD and Digital Organization is your step-by-step guide to bringing order to the digital chaos so your tech finally works for you, not against you. With clear, ADHD-friendly methods and real examples, youll learn how to: Create simple, intuitive systems for files and folders Manage tasks and ideas without mental overload Use apps and tools that actually fit the ADHD brain Stay productive online without losing focus This isnt about perfection its about clarity, flow, and control. With small, sustainable changes, youll discover how to simplify your digital world and free up mental space for what truly matters. Master your digital life. Focus your energy. Turn chaos into clarity one click at a time.

ADHD and Couple Life: How to Maintain Harmony in a Relationship Love can be challengingbut when ADHD enters the picture, relationships face unique highs and lows. This heartfelt guide helps couples understand each other better, communicate effectively, and build a stronger emotional bond. Discover how ADHD impacts relationships and learn proven strategies to handle forgetfulness, impulsivity, and emotional ups and downs with compassion and teamwork. Filled with real-life advice, reflection exercises, and tools for deeper connection, this book shows how understanding and empathy can turn tension into trust. Strengthen your relationship, nurture harmony, and fall in love all over againthis time, with more balance and understanding.

ADHD in Childhood: How to Support Your Child with Love and Discipline Discover how to guide your child with ADHD using empathy, structure, and unwavering support. This heartwarming and practical book shows parents how to balance love with effective disciplinecreating a home where children can truly thrive. Learn how to manage emotional outbursts, improve focus, and build routines that nurture confidence and calm. Filled with real-life advice, proven techniques, and encouraging insights, this book empowers you to turn daily struggles into moments of growth and connection. Because with patience, understanding, and the right tools, your childs unique mind can shine brighter than ever!

ADHD: Overcoming Perfectionism Are you trapped between endless overthinking and the fear of never being "good enough"? This empowering book reveals how to break free from perfectionism and reclaim peace, productivity, and self-worth. Learn why ADHD and perfectionism often go hand in handand how to replace self-criticism with self-compassion, procrastination with progress, and pressure with purpose. Packed with actionable tools, mindset shifts, and real-life examples, this guide helps you embrace imperfection as the key to authentic success. Stop chasing "perfect." Start building a life thats focused, free, and fulfilling!