This standard specifies the classification and marking, technical requirements, testing method and identification of non-powered air-purifying particle respirator. This standard is applicable to non-powered air-purifying particle respirator. This standard is not applicable to respirators used for preventing harmful gas and vapor and those used in oxygen-deficient environment, underwater operation, escape and fire protection. GB 2626-2019 English Translation of Chinese Standard
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his standard specifies the terms and definitions, classification and specification, technical requirements, test methods, inspection rules, packaging, marking, safety warning, and transportation and storage of children mask (hereinafter referred to as mask). This standard is applicable to the marks worn by children aged 6~14 years, for filtering particulate matters in the air and blocking microorganisms, pollen, droplet, etc. This standard is not applicable to masks with electric air supply (exhaust) devices.
From Dr. Wang Zhou and his colleagues at the Wuhan Center for Disease Control and Prevention comes a must-have guide for preparing for an outbreak of the coronavirus virus (COVID-19). The Center for Disease Control and Prevention in the US and the World Health Organization have declared the coronavirus a worldwide health emergency. The coronavirus was first identified in Wuhan, China. Now, from the medical experts there, comes the first authoritative, comprehensive guide to preparing for the ongoing epidemic (COVID-19). Written in plain language, here is information that will help readers and professionals understand the virus and protect themselves in the face of a possible outbreak. As COVID-19 continues to spread around the world—China, South Korea, Iran, Italy, Germany, the United Kingdom, Canada, and the United States—preventative measures such as controlling the source of infection, early detection of patients, and cutting off transmission are imperative. With 101 tips for individuals to prevent the spread of the virus, the information in this handbook could be lifesaving. The prevention tips include: Precautions for individuals and public places (handwashing, face masks, etc.) Strategies for detection and treatment of the disease An overview of the coronavirus and how it’s spread Basics about contagious diseases With the number of reported cases of COVID-19 growing daily, the information in this book will help you protect yourself and your loved ones!
This report offers an analytical framework that allows for more systemic assessments of distributed ledger technology (DLT) and its applications. It examines the evolution and typology of the emergent technology, its existing and projected applications, and regulatory and policy issues that they entail. This report highlights the trends, concerns, and potential opportunities of DLTs, especially for Asian markets. It also identifies the benefits and risks to using DLT and offers a functional and proportional approach to these issues.
This standard specifies the technical requirements, testing methods and identification of non-powered air-purifying particle respirator. This standard is applicable to the non-powered air-purifying respiratory protective equipment for various particles. This standard is not applicable to the respiratory protective equipment for harmful gas and vapor. This standard is not applicable to the respiratory protective equipment used in the anoxic environment, underwater operation, escape process and fire fighting process.
This book will serve as a primer for both laboratory and field scientists who are shaping the emerging field of molecular epidemiology. Molecular epidemiology utilizes the same paradigm as traditional epidemiology but uses biological markers to identify exposure, disease or susceptibility. Schulte and Perera present the epidemiologic methods pertinent to biological markers. The book is also designed to enumerate the considerations necessary for valid field research and provide a resource on the salient and subtle features of biological indicators.
Forest land managers face the challenges of preparing their forests for the impacts of climate change. However, climate change adds a new dimension to the task of developing and testing science-based management options to deal with the effects of stressors on forest ecosystems in the southern United States. The large spatial scale and complex interactions make traditional experimental approaches difficult. Yet, the current progression of climate change science offers new insights from recent syntheses, models, and experiments, providing enough information to start planning now for a future that will likely include an increase in disturbances and rapid changes in forest conditions. Climate Change Adaptation and Mitigation Management Options: A Guide for Natural Resource Managers in Southern Forest Ecosystems provides a comprehensive analysis of forest management options to guide natural resource management in the face of future climate change. Topics include potential climate change impacts on wildfire, insects, diseases, and invasives, and how these in turn might affect the values of southern forests that include timber, fiber, and carbon; water quality and quantity; species and habitats; and recreation. The book also considers southern forest carbon sequestration, vulnerability to biological threats, and migration of native tree populations due to climate change. This book utilizes the most relevant science and brings together science experts and land managers from various disciplines and regions throughout the south to combine science, models, and on-the-ground experience to develop management options. Providing a link between current management actions and future management options that would anticipate a changing climate, the authors hope to ensure a broader range of options for managing southern forests and protecting their values in the future.
A masterful and comprehensive chronicle of World War II, by internationally bestselling historian Antony Beevor. Over the past two decades, Antony Beevor has established himself as one of the world's premier historians of WWII. His multi-award winning books have included Stalingrad and The Fall of Berlin 1945. Now, in his newest and most ambitious book, he turns his focus to one of the bloodiest and most tragic events of the twentieth century, the Second World War. In this searing narrative that takes us from Hitler's invasion of Poland on September 1st, 1939 to V-J day on August 14, 1945 and the war's aftermath, Beevor describes the conflict and its global reach -- one that included every major power. The result is a dramatic and breathtaking single-volume history that provides a remarkably intimate account of the war that, more than any other, still commands attention and an audience. Thrillingly written and brilliantly researched, Beevor's grand and provocative account is destined to become the definitive work on this complex, tragic, and endlessly fascinating period in world history, and confirms once more that he is a military historian of the first rank.
