Kemi

For courses in introductory, preparatory, and basic chemistry.

Basic Chemistry introduces students to the essential scientific and mathematical concepts of general chemistry. With accessible language and a moderate pace, the text is easy-to-follow for first-time chemistry students, as well as those hoping to renew their studies of the subject.

In the 5th Edition, Bill and Karen Timberlake carefully develop core ideas while relating them to the possibility of future careers. The book guides students through basic chemistry problem solving with engaging visuals and a focus on developing the math skills necessary to be successful in the course. End of chapter questions strategically promote integration of cumulative ideas, allowing students to develop a strong foundation for learning chemistry and encouraging them to continue their studies in the field. The main objective in writing this text is to make the study of chemistry an engaging and a positive experience for students by relating the structure and behaviour of matter to real life.

This new edition introduces more problem-solving strategies, more problem-solving guides, new features in the Sample Problems; Try It First before the Solution and Connect in the Analyse the Problem step of the solution, a new Engage feature, new conceptual and challenge problems, and new sets of combined problems.

For courses in General, Organic, and Biological Chemistry

Active learning, an increased focus on clinical examples, updates based on current teaching and research findings, and digital innovations designed to engage and personalise students’ experience make Fundamentals of General, Organic, and Biological Chemistry simply the best choice for students with a future in allied health. With the 8th Edition, the authors make learning chemistry a more active experience through features designed to get students doing chemistry. Every chapter features Hands on Chemistry sections that deepen students’ understanding of chemistry by having them perform elementary experiments with everyday household items. Group Problemsat the end of every chapter are designed for in-class use and motivate students toward higher level thinking, such as how concepts fit together and how to apply these concepts in a clinical application. All of the chapter openers, including many of the Chemistry in Action boxes and end-of-chapter problems, have been rewritten for a stronger clinical focus that provides more relevance to allied health majors.

For courses in introductory, preparatory, and basic chemistry.

Basic Chemistry introduces students to the essential scientific and mathematical concepts of general chemistry. With accessible language and a moderate pace, the text is easy-to-follow for first-time chemistry students, as well as those hoping to renew their studies of the subject.

In the 5th Edition, Bill and Karen Timberlake carefully develop core ideas while relating them to the possibility of future careers. The book guides students through basic chemistry problem solving with engaging visuals and a focus on developing the math skills necessary to be successful in the course. End of chapter questions strategically promote integration of cumulative ideas, allowing students to develop a strong foundation for learning chemistry and encouraging them to continue their studies in the field. The main objective in writing this text is to make the study of chemistry an engaging and a positive experience for students by relating the structure and behaviour of matter to real life.

This new edition introduces more problem-solving strategies, more problem-solving guides, new features in the Sample Problems; Try It First before the Solution and Connect in the Analyse the Problem step of the solution, a new Engage feature, new conceptual and challenge problems, and new sets of combined problems.

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När det gäller sömn och vakenhet måste vi överväga vad de är: om de är unika för själen eller kroppen, eller gemensamma för båda … dessutom av vilken orsak uppkommer de som egenskaper hos djur … – Aristoteles, Om sömn och sömnlöshet, 350 före vår tideräkning

I det antika Grekland var sömnen och drömmarnas värld centrala i myterna och filosofin. Vår förundran över sömnen lever kvar och har genom historien lett till otaliga experiment och teorier. Människan har gått från att använda sig av vad hon hittar i naturen till att i laboratorier forska fram det perfekta pillret för att antingen söva oss eller hålla oss vakna. Vad sägs om dårrepe eller vallmo till kvällen och en kopp kaffe eller kokablad för att piggna till? Gemensamt för alla dessa substanster är att de har påverkat vårt kemiska förhållande till natten.

I Nattens gudar leder Ulf Ellervik oss genom kulturhistorien och vetenskapen för att finna svar på sömnens och vakenhetens gåtor.

If you are studying forensic science, or a related course such as forensic chemistry or biology, then this book will be an indispensable companion throughout your entire degree programme. This ‘one-stop’ text will guide you through the wide range of practical, analytical and data handling skills that you will need during your studies. It will also give you a solid grounding in the wider transferable skills such as teamwork and study skills.

This third edition of Practical Skills in Forensic Science builds upon the excellent foundation of its predecessors and provides an easy-to-read guide to help you develop the skills you need to succeed. It retains the key features of earlier editions, with a layout that explains the essential elements of practical techniques and procedures in a step-by-step manner to help you understand their application in the context of forensic science.

Features include:

·   Coverage of a wide range of practical aspects from fingerprint recovery, trace evidence examination, bodily fluid examination and DNA analysis, as well as broader skills such as tackling numerical problems and passing exams.

·   Case examples, guidelines for documentation and reporting results, plus advice on the legal aspects of forensic science provide you with an understanding of the professional role of a forensic scientist.

·   New material on personal development planning, learning styles, e-learning and avoiding plagiarism.

·   Updated sections on software for graphical and statistical analysis.

·   Worked examples and ‘How To’ boxes provide practical guidance and support.

·   Key points highlight critical features of methodology.

·   Use of margin tips, definitions and illustrations throughout.

·   Additional sources of further study identified for every chapter.

·   Safety notes highlight specific hazards and appropriate practical steps to minimise risk.

·   Study exercises (and answers) in each chapter help to reinforce learning.

ALAN LANGFORD is Senior Lecturer and Programme Leader in Criminology and Forensic Sciences at Northumbria University, UK; JOHN DEAN is Professor of Analytical and Environmental Sciences and Director of the Graduate School at Northumbria University, UK; ROB REED is Professor of Biomedical Science and Director of Undergraduate Science Programs at CQUniversity, Australia; DAVID HOLMES is Director of Collaborative Programs in Applied Sciences at Northumbria University, UK; JONATHAN WEYERS is Director of Quality Assurance at the University of Dundee, UK; and ALLAN JONES is Senior Lecturer and Chancellor's Award Fellow in Ecology, Environmental Science and Zoology at the University of Dundee, UK.