self-contained carbon monoxide alarm  Articles

  • Self-purification of marine environments for heavy metals: a study on removal of lead(II) and copper(II) by cuttlebone

    The aim of this study was to determine adsorption properties of cuttlebone, cuttlefish bone as dead biomass, for lead(II) and copper(II) from aqueous solutions. Adsorption kinetic, isotherm and effect of pH (in the range of 2.0–7.0) were investigated in a single component batch system at room temperature (25 ± 1 °C). The heavy metal adsorption by cuttlebone was relatively rapid ...


    By IWA Publishing

  • Occupational Airborne Hazards and the Importance of Proper Respiratory Protection

    Each year, the United States Occupational Safety and Health Administration (OSHA) publishes a preliminary list of the 10 most frequently cited safety and health violations for the fiscal year.  It is comprised and compiled from thousands of workplace inspections conducted by federal OSHA staff from across the country.  Most years, one of the top 10 cited violations involves respiratory ...


    By Cochrane & Associates, LLC

  • Los Angeles County WRRF Embraces Codigestion

    Technology to produce food waste slurry key to project implementation - and helps generators comply with California organics recycling mandates. The Sanitation Districts’ JWPCP in Carson (CA) treats an average of 280 million gallons/day of wastewater. One of the two anaerobic digestion tanks above has been used for codigestion, with the second serving as the control. Photos ...


    By BioCycle Magazine

  • Healthy Habits - Improving Wellbeing on a Work Schedule

    As we firmly embrace 2017 crashing into these strange new numbers head on, many of us will be facing the harsh reality of our New Year resolutions; perhaps – just perhaps – in many cases feeling like we’ve promised just a little more than we can deliver. Taking an educated guess, it’s safe to assume many people’s plans will consist of some effort to get back into ...


    By SHEilds Ltd

  • Importance of Inspecting Reservoirs

    Inspecting Reservoirs – what is the importance of them, why they are inspected, and how ROVs help pave the way for low-cost, regular maintenance. What is a Reservoir? Deriving from the French word réservoir meaning “storehouse,” a reservoir is exactly that – a storage place for water. More often than not, these bodies of water are ...


    By Deep Trekker Inc.

  • A Self-Boring Pressuremeter System

    The paper describes some of the development work on the Cambridge University version of the self-boring pressuremeter (the so-called “Camkometer”), which has been carried out at the University of Western Australia over a number of years. This work included improvement of the pore-pressure measuring system and development of a deairing system for the pore-pressure transducers, new supply-voltage ...


    By ASTM International

  • Improving Awareness for Self-Lay

    Untitled Document At the Network 2004 conference, OFWAT’s Elaine Chatham started her Presentation by saying “House-builders, ...


    By WRc plc

  • Gravity self-backwashing filters

    The filtration of make-up and side-stream water in closed cooling circuits, operated through cooling towers, is a fundamental step to ensure safe and continuous operations in a power plant. Water - required in large amounts for this application - should not be wasted, and the potential damages deriving from a poor treatment must be avoided at all cost. BONO ARTES has developed a technical ...


    By Artes Ingegneria SpA

  • Nuclear self esteem

    Being technically multifaceted and complex for understanding by the general public, the capability of some nuclear applications, especially nuclear power, and their potential in helping with some of the most important global issues, seem to be underrated by the public. A few elements that are responsible for this 'higher complexity lengthier pipeline' from demonstrated performance to public ...


    By Inderscience Publishers

  • Nucleation phenomenon in nanoparticle self-assemblies

    Dispersed nanoparticles self-assemble into complex structures when segregated from the solvent either by evaporation or precipitation. Thus, different micro- and macroscopic structures (opals, fractals, liquid crystals) formed by nanoparticles are observed as a result of the balance between electrostatic forces, surface tension, volume exclusion, substrate topography and affinity, and size, shape ...


    By Inderscience Publishers

  • An infrastructure for developing self-organising services

    This paper describes a software package named 'licas' (lightweight internet-based communication for autonomic services) that can be used to build networks of service-based components that have the potential to behave autonomously and self-organise through stigmergic links. Discussed will be how these components are able to self-adapt inside of this infrastructure and also show potential for more ...


    By Inderscience Publishers

  • The Basics of EH&S Self-Auditing

    The challenge of complying with all of the applicable environmental and occupational safety regulations is formidable for any organization. Internal auditing, or self-auditing, is increasingly being used to address this challenge. This article looks at the range of auditing practices that exist to help organizations decide if self-auditing makes sense for them and what form it should take. ...

  • Exploring a quality of life, self-determined

    Built capital combines with social, personal and natural capital to contextualize people's quality of life. Although this last concept has strongly tested academic reasoning, it is often presented simply and as a fait accompli in strategic planning documents. This article questions these pragmatic 'top-down' scripts by engaging the self-determination theory of motivation. It argues the transience ...

  • Array gain and reduction of self-noise

    Abstract—Because an array is composed of many sensors, each making an independent measurement of the wavefield, intelligent combination of the sensor signals should lead to an overall increase in the signal-to-noise ratio. What we are trying to achieve is enhancing the signal with an array beyond what is possible with a single sensor. The array gain measures an array’s signal-to-noise ...


    By Norsonic AS

  • Are self-driving vehicles good for the environment?

    Autonomous transportation has lots of advantages. Reducing greenhouse gas emissions could be one of them. Can autonomous cars be a boon for the environment? The transportation sector is the second largest source of greenhouse gas emissions in the United States, accounting for 27 ...


    By Ensia

  • Self-reflection and personal evolution as keystone of sustainability

    Self-reflection and personal evolution has a central place within the process of creating a sustainable atmosphere for creation. Becoming aware that the state of being determines the outcome of an action puts a different light on human thinking and behaviour. By creating an atmosphere where the focus on personal evolution, inner potential and talents is possible, the natural characteristics of ...


    By Inderscience Publishers

  • Self–organisation of regular dusty structures in plasma trap

    The formation of ordered dusty structures in the special RF–gas discharge (plasma trap) capable of capturing and confining nano– and micro–particles in electromagnetic field was studied experimentally. Two ways of the dust–plasma structure formation were investigated: (1) The condensation of preliminary evaporated organic or inorganic substances. The plasma trap could confine the vapour clusters ...


    By Inderscience Publishers

  • QTL underlying self-fertility in tetraploid alfalfa

    A potential strategy to decrease the levels of self-seed production during the seed increase stages of alfalfa (Medicago sativa L.) synthetic cultivar development is selection for decreased self-fertility. The underlying genetics of this trait have not been elucidated and, therefore, a study was designed to identify genetic determinants of alfalfa self-fertility. An F1 mapping population ...

  • How to become self-sufficient in energy management

    We believe there are three simple key stages of an energy management journey which will transform an organisation from one with the ambitions to manage energy, to one which is proficient and self-sufficient in the art. Each key stage of the ...


    By Drumbeat Energy Limited

  • Tractive force design for self-cleansing of sanitary sewers

    The new edition of the WEF FD 5/ASCE MOP 60 manual recommends use of the tractive force approach for self-cleansing design of gravity sanitary sewers. The tractive force approach is a major improvement in designing gravity sewers to achieve self-cleansing. This approach results in a self-cleansing slope value, Smin, for the combination of sewer diameter, design particle size, d, and design ...

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