precision dosing calibration Articles

  • The Monte Carlo simulation of the TLD response function: scattered radiation field application

    Thermoluminescent Dosimeters (TLDs) have various applications in nonprimary beam dosimetry. The Monte Carlo simulation of the TLD response was done in low energy beams to improve its clinical use in scattered beam dosimetry. The normalised values of the measured quality dependence factors for different X-ray beams were found to be 1.28, 1.24, 1.16, 1.07 and 1.03 for different beam qualities, ...


    By Inderscience Publishers

  • Analysis of radioisotope concentrations in sediments using γ-ray spectrometry

    The concentrations of some naturally occurring radioisotopes in sediments of the Kufranja river basin in Jordan were determined by means of γ-ray spectrometry with precise calibration of energy and efficiency. The nuclides' concentrations were found by either direct measurement of their activities, as in the case of 226Ra and 40K, or through the measurements of the ...


    By Inderscience Publishers

  • Use of anaerobic respirometers for measuring gas production in toxicity and treatability tests

    Introduction Anaerobic processes are used widely for stabilizing domestic sludges, treating industrial wastes, and converting biomass to methane. These processes frequently receive complex organic chemicals that are classified as being hazardous or toxic. Despite advances in our understanding of anaerobic reactions, there is limited information regarding the impact of toxic chemicals on the ...


    By Challenge Technology

  • Phosphorus control protects surface waters

    Phosphorus is the decisive factor for excessive algae and plant growth in water bodies, that’s why quality standards require reductions in the amount of phosphorus released from wastewater treatment plants into rivers and lakes. In recent years, the outlet limit values have not only been reduced on national levels. Depending on the vulnerability of ecosystems, especially low target values ...


    By Endress Hauser

  • Inno-badge – an electronic dosimeter badge for continuous recording of a worker`s exposure to Phosgene gas

    Untitled Document Phosgene, also known as Carbonyl Chloride, is a widely used but highly toxic substance. At room temperature Phosgene gas is nearly colourless, and at low concentrations ...


    By Baum Publications Ltd.

  • Noise Measurement

    Definitions Threshold and criterion levels The threshold level is the A-weighted sound level at which a personal noise dosimeter begins to integrate noise into a measured exposure. For example, if the threshold level on a sound level meter is set at 80 decibels (dB), it will capture and integrate into the computation of dose all noise in the employee's hearing zone that equals or exceeds 80 dB. ...


  • Optimisation of Binder and Catalyst Addition: Steel Castings Pty Ltd

     Steel Castings Pty Ltd installed a computerised ‘Autocat’ system to control the addition of catalyst and binder for the production of sand moulds. The finer control of addition rates has significantly reduced the number of reject moulds and achieved annual savings of $21,780 from reduced raw sand and chemical costs. Background Steel Castings Pty Ltd operates a foundry ...


  • By the Numbers

    In a sense, metrology makes the world go around. It can quantify how long it takes the Earth to rotate, and the science of weights and measurements underpins everything from telling time to ensuring the fairness of international trade agreements. Metrologists must be extremely precise in their measurements, according to Alan Steele, Canada’s chief metrologist and the general manager of ...


    By ASTM International

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