dosimeter Articles

  • Calibration and characterisation of extremity dosimeters

    The increasing use of radiation in the medical field is providing great advances in health improvement. However, these techniques can generate an increase in the number of professionals exposed to radiation. The Brazilian authorities (Brazilian Nuclear Energy Commission ? CNEN) have imposed the monitoring of specific body parts of professionals. One of these obligations is the monitoring of the ...


    By Inderscience Publishers

  • Monitoring personal noise exposure in West end theatres with the doseBadge5 - Case study

    When the audience sits in the stalls of a West End theatre they have very little idea of the technology that goes into giving them the ultimate live show experience. Some shows enjoy runs that last for years, others aren’t so lucky, but each night there is a team of front of house staff and stagehands that bring the magic to life. The noise risks of working in a live music venue are ...


    By Cirrus Research plc

  • Controlling Exposure to Noise at Work with Personal Noise Dosimeters

    Which method is best to monitor noise: sound level meter or noise dosimeter? Controlling exposure to noise at work with noise dosimeters Our work environment has been transformed since the 1970’s with the introduction of new machinery and technical equipment designed to improve and increase general productivity. This has revolutionalised the way we operate ...


    By Pulsar Instruments plc

  • Introducing Octave Band Filters for the doseBadge5 Noise Dosimeter

    We’re pleased to announce that the Cirrus doseBadge5 Noise Dosimeter now includes 1:1 Octave Band Filters as standard*, adding to the already comprehensive set of measurement data that the unique doseBadge5 can provide. The doseBadge5 is already the best specified dosimeter available with multiple measurement channels, comprehensive data logging, ...


    By Cirrus Research plc

  • Canarina CUSTIC software · noise dosimeters and modeling · introduction 5

    Noises are irregular and disordered vibrations including all possible frequencies. The intensity of a sound I can be expressed in decibels with the standard equation: L=10 log(I/I0) where I0 is the quietest sound most people can hear, the threshold of hearing 10-12Wm-2.  When the ratio is between ...

  • Visit Cirrus at A+A 2017 and see the new doseBadge5 Noise Dosimeter

    Cirrus Research will be presenting a number of new and exciting additions to the existing range at the A+A Exhibition in October 2017. On stand 6C51 will be the new doseBadge5 Noise Dosimeter and the Optimus Sound Level Meters which together provide a complete solution for both occupational and environmental noise measurements. A+A 2017 will be the first opportunity for visitors to see ...


    By Cirrus Research plc

  • Performance of some handheld dosimeters used for gamma–ray ambient dose rate measurements

    A study was carried out on the performance of some handheld dosimeters that are used for measuring ambient gamma dose rates. A CsI scintillation–based and two GM–based dosimeters were used to measure the absorbed dose rates in an indoor environment, inside a lead shield, on different floors of a building, in a desert environment and in a boat on the Arabian Gulf. The study showed that while some ...


    By Inderscience Publishers

  • 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.

  • Development of sintered composites of CaSO4 doped with Dy and Nd

    The main purpose of this work is the development of sintered composites in order to allow their use as thermoluminescence (TL) dosimeters using a simple route to preparation and employing high temperature. The composites were prepared with CaSO4.2H2O doped with Dy2O3 and NdO3. Initially, CaSO4.2H2O was dehydrated in an oven at 100°C for 1 h. After addition of dopants and homogenisation, Polyvinyl ...


    By Inderscience Publishers

  • Experimental determination of dose uniformity in the CDTN gamma irradiator

    This paper describes an experimental study of dose uniformity within a container used for products irradiation, in the gamma irradiation facility at Nuclear Technology Development Center (CDTN). The CDTN is a research institute of the National Nuclear Energy Commission (CNEN), Brazil. Polymethylmethacrylate (PMMA) dosimeters were used in order to determine the Dose Uniformity Ratio (DUR) inside ...


    By Inderscience Publishers

  • An Industrial Noise Map is Basic to Hearing Conservation

    An Industrial Noise Map Is Basic to Hearing Conservation In the U.S., OSHA has set regulations on worker noise exposure. The usual measurement method is to use a portable noise dosimeter attached to a worker that measures noise exposure as the person moves about the work area. However, this does nothing to identify the source and location of the noise. When conducing a noise survey, a noise ...

  • A report of staff overdose during fluoroscopic procedures

    The aim of this study was to determine mean absorbed doses to the stuff working in operation room after renovation and establishing a new X-ray equipment and to find an approach to reduce the absorbed dose to the doctors and nurses in operation room. The source of over exposure was a combination of new equipment and lack of awareness of staff engrossed in their duties.Keywords: staff overdose, ...


    By Inderscience Publishers

  • Noise Monitors and Meters

    Sound level meters Description and ApplicationsThe sound level meter is a lightweight instrument for the measurement of sound pressure level (SPL) in decibels. All ANSI-approved meters meet minimum requirements that include an A-weighted network, a slow-response meter characteristic, and a fully graduated scale with measurements ranging from 80 to 130 dBA. The Type II meter is most frequently ...

  • 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. ...


  • Development and production of holders for extremity detectors

    The objective of this paper was to develop and produce holders for thermoluminescent detectors for use in interventionist radiology and nuclear medicine. To obtain the value of Dose Equivalent for Extremities, a dosimetry of extremities was done. The holders must have characteristics which are adequate for their intended use. The detector element used in the holders was the LiF:Mg,Ti (TLD-100) ...


    By Inderscience Publishers

  • 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

  • The Measure Issue 10 Autumn 2016 – The Cirrus Research Newsletter

    The latest issue of The Measure, the Cirrus Research newsletter is now available for download. In this issue we’ve covered: The new doseBadge5 Noise Dosimeter with a history and timeline of the doseBadge family A case study for the Optimus Green Sound Level Meter and the Invictus Environmental Noise Monitor at the Classical Haçienda ...


    By Cirrus Research plc

  • Improvement of epidemiological data analysis by unbiased estimates of log-normal dose distribution

    The effects of radiation on population and risk assessment are studied through epidemiological studies that are heavily dependent on dose distribution. Radiation doses to individual workers follow a log-normal distribution. Computation of the collective dose with the minimum detectable values (Detection Limit or DL) as zero is biased. Hence the expectation value of the 'missed' doses is computed ...


    By Inderscience Publishers

  • doseBadge proves no problem for Patterson Pumps - Case study

    A chance introduction to Cirrus Research at a US Health & Safety Conference proved to be very fortunate timing for Greg Dobson. Greg is the Environmental and Safety Manager for the Patterson Pump Company, one of the world’s leading suppliers of quality pumps for sectors including: flood control, industrial, fire, municipal and HVAC. He explains in his own words: “While attending ...


    By Cirrus Research plc

  • Grab £1000 of free benefits with the dBAdvantage Card from Cirrus Research

    The dBAdvantage Card from Cirrus is the quick and easy way to grab £1000 of FREE benefits when you buy a Cirrus sound level meter or doseBadge noise dosimeter kit. As a dBAdvantage Card member you’ll automatically get access to the following benefits: 1. A FREE place, each ...


    By Cirrus Research plc

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you