atmospheric ultraviolet radiation Articles

  • Non-Ionising Radiation

    Pressures on the environment may occur through chemical, physical and biological agents. The subject of this study is physical agents, where physical fields are examined. Physical fields are part of the natural environment. Depending upon their properties and the surrounding conditions, physical fields are transmitted through the spaces in which we live, potentially affecting human health and ...

  • A Lagrangian particle model with chemical reactions: application in real atmosphere

    In this work, a Lagrangian particle model able to account for simple chemical reactions between NO and O3 has been improved to consider the photolysis of NO2. A system of chemical equations is numerically solved on a Eulerian grid, while the particle trajectories are moved in a Lagrangian frame. The ...


    By Inderscience Publishers

  • How to reverse the causes of ozone layer destruction

    Since the causes of ozone layer depletion were identified, solutions were put into place to reduce or eliminate their usage. The U.S. Clean Air Act and the Montreal Protocols address the problem internationally. The goal of these treaties is to stop the damage to the ozone layer by phasing out known contributors.Although there are numerous causes of ozone layer depletion, chloroflurocarbons have ...


    By Verisae

  • Microwave UV - An everlasting lamp?

    Microwave UV Disinfection – An Everlasting Lamp?Many of you working in the water and wastewater industry will have observed the emergence of Ultraviolet technology as a player in the world of disinfection over the past 10-15 years. This article will provide a brief introduction to UV technology and outline a recent advancement in the field: - the generation of UV light using microwave energy ...


    By O2 Environmental Inc.

  • The role of urban forest in the protection of human environmental health in geographically-prone unpredictable hostile weather conditions

    INTRODUCTION The structure of urban forest Few people know how many or what kind of trees are found in urban areas, or the effect these trees have on a city’s environment and the health and well being of its inhabitants. In order to understand the urban forest structure and its function in environmental improvement 5 major landscape elements, i.e., building and hard pavement surface, water, ...

  • Refrigerant Gases (R-22 HCFCs): Understanding the laws regulating them

    The US Clean Air Act is a congressional law that explains the EPA's task in protecting air quality and the ozone layer. This Act is maintained by the House of Representatives. Major amendments were passed in 1990 and several other changes were made after that with still more pending related to mandatory reporting of Greenhouse Gas (GHG) emissions.Refrigerant gases are those used in climate ...


    By Verisae

  • Ozone Depleting Substances

    Abstract In Europe the increase in ultra-violet radiation (UV) is estimated to be larger over the western parts because of large depletion in the total ozone column. UV global trends are estimated to increase by 3-4% per decade in northern hemisphere midlatitudes and 3-9% in southern hemisphere midlatitudes. The ozone layer can start recovering, but full recovery will take another 50 years if ...

  • Ozone Depletion and Global Warming Our Planet`s Protective Shield is Being Destroyed

    Ozone Depletion Stratospheric ozone is Earth's natural protection for all life forms, shielding our planet from harmful ultraviolet-B (UV-B) radiation. UV-B causes skin cancer, cataracts and immune suppression in both animals and humans. UV-B harms amphibian eggs, midge larvae and trout. UV-B also damages plants including hardwood forests, and phytoplankton (algae is a type of phytoplankton ...


    By IHS

  • How to decifer government laws for refrigerant gases (R-22 HCFCs)

    Refrigerant Gas Regulations for R-22 HCFCs: How the Government Mandates Monitoring and TrackingThe U.S. Clean Air Act is a regulation that spells out the EPA's role in air quality, especially in protecting the ozone layer and the tracking and reporting of Greenhouse Gases. The Act is maintained by the House of Representatives. The Clean Air Act has had changes made in the 1990s and again in 2008 ...


    By Verisae

  • New research may solve the problem of plastic wastes

    GLOBE-Net, May 8, 2013* - Plastic - it is an indispensable part of our everyday lives and an almost indestructible part of the garbage that daily ends up in our landfills, incinerators, junk yards, in our rivers or oceans, or in the bellies of fish or animals that form part of our food chain.  Every year, over 260 million tonnes of plastic are produced globally. That is ...


    By GLOBE Foundation

  • A Breath of Fresh Air for Your

    As the full effect of the Federal Clean Air Act (CAA) Amendments continue to impact today’s industry, many companies will be required to install new or additional air pollution control equipment.  With over two decades of proven success, catalytic oxidation is a popular method for controlling volatile organic compound (VOC) emissions.During the past 25 years, industry has made progress in ...


    By The CMM Group, LLC

  • Greening the Built Environment

    ASTM Standards and Products Form the Foundation of Sustainable Construction Efforts Today, a major focal point for the worldwide building industry is the growing demand for sustainable construction. Sustainable, or “green,” construction is focused on the more effective use of resources and ultimately the creation of healthier, energy efficient, more environmentally ...


    By ASTM International

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