radiation sampling Articles
-
More durable or more vulnerable? - Effect of nanoparticles on long-term performance of polymeric nanocomposites during UV exposure
ZnO nanoparticle is being used as an inorganic UV absorber for polymers. However, the mechanism of how ZnO nanoparticles influence the photo degradation of polymersis is not well understood. This study has investigated the role of ZnO nanoparticles in the long-term performance of a polyurethane (PU) nanocomposite subject to UV radiation. PU samples containing different levels of ZnO nanoparticles ...
-
Effect of –irradiation on anti–nutrient, in vitro digestibility and amino acids: profile of sorrel seeds (Hibscus sabdariffa)
The effect of irradiation (dose levels of 0, 2.5, 5, 10 and 20 kGy) on nutritive (amino acids, and protein digestibility) and anti–nutritional characteristics [total phenols (PH), tannins (TA), phytic acids (PA) and oxalate (OX)], level of anti–nutrients in vitro digestibility (IVPD) and protein digestibilty corrected amino acid score (PDCAAS) of sorrel seeds (Hibiscus sabdariffa), ...
-
Time resolved liquid scintillation counting: (TR-LSC™) for environmental 3h analysis
Environmental analysis of many naturally occurring and man-made, beta emitting radionuclides, including 3H, 14C, 90Sr/90Y, 241Pu, and 234Th is a significant analytical challenge due to the extremely low activity levels encountered. Under these circumstances, reducing instrument background is essential for improving analytical sensitivity. Time-Resolved Liquid Scintillation Counting (TR-LSC), a ...
-
High Power Subnanosecond Generator For UWB Radar
Introduction Subnanosecond pulse generator is one of the most important elements of ultra-wideband (UWB) radar. Parameters of impulse generator influence to radar performance since it depends on radiation power and receiver sensitivity. There are some ways to get high performance factor of the UWB radar. It can be achieved as increasing of radiation power as multiply sampling data accumulation. ...
-
Measuring Sound Absorption: Considerations on the Measurement of the Active Acoustic Power
For the measurement of the sound absorption coefficient a large number of methods is available. These methods have in common that all of them rely on an overall sound Held model, i.e. a model that describes the whole sound field in front of the surface under investigation. Examples are the diffuse sound field model in the reverberation room method according to ISO 354 [ 1 ] and the plane wave ...
-
More durable or more vulnerable? - Effect of nanoparticles on long–term performance of polymeric nanocomposites during UV exposure
ZnO nanoparticle is being used as an inorganic UV absorber for polymers. However, the mechanism of how ZnO nanoparticles influence the photo degradation of polymersis is not well understood. This study has investigated the role of ZnO nanoparticles in the long–term performance of a polyurethane (PU) nanocomposite subject to UV radiation. PU samples containing different levels of ZnO nanoparticles ...
-
The effective dose to the public of Kerman province from gamma emitter terrestrial radionuclides
The concentration of the most important terrestrial radionuclides in soil that constitute significant components of the background exposure source of the population, such as 238U, 232Th and 40K, were measured by gamma spectrometry in 58 surface soil samples in Kerman province, Iran. The average activity concentrations were found to be 23.8 ± 3.6, 28.8 ± 4.3 and 489.6 ± 48.9 Bq kg−1, respectively. ...
-
The application of radiation sources in the oil and gas industry and shortages in their services
Oil and gas industries utilise many radiation sources in various applied radiation-based technologies. Those technologies provide significant benefit to the daily operations of the industry. Gamma emitting sources of Cs-137, Co-60, Ba-133, Am-241 are used in oil and gas well logging, in Multiphase Flow Meter (MPFM) technology at oil and gas production facilities and in transmitted level gauges ...
-
Radiological hazard indices due to activity concentrations of natural radionuclides in farm soils from two high background radiation areas in Nigeria
Abeokuta and Jos Plateau, towns in the southwestern and northern parts of Nigeria, respectively, are situated in areas of high background radiation. The use of farm soil for the construction of dwellings by local residents and for agricultural purposes in these areas may present scenarios for both enhanced external and internal exposure pathways to the population. In order to assess the gamma ...
-
What Is FTIR Spectroscopy?
We recently launched our newest product, the IR5 FTIR Spectrometer, but what is FTIR spectroscopy? This blog post will highlight the basics of FTIR spectroscopy, discussing how it works and what the resulting FTIR spectrum can reveal about your sample. Infrared Spectroscopy Infrared (IR) spectroscopy is one of the most used spectroscopic techniques in analytical laboratories for both qualitative ...
-
Guide To Coolant In Oil Test Methods
Liquid cooled engines and rotating equipment use glycol based coolants because of their excellent heat transfer abilities. However, glycol based coolants are not desirable at all in lubrication oil itself – Coolant ingression to the lubricant is a particularly nasty contaminant for the variety of damage it can cause. Glycol coolants break down in the high temperature engine environment, ...
-
Custom Engineering and Design Capability
ANSI N13.1-2011 stack sampling location qualification testing ANSI N13.1 stack sampling system design Custom air sampler design Integration of radiation detectors and air sampling systems ANSI N13.1-2011 Design Considerations ANSI N13.1-2011 requires that sampling systems satisfy the following design criteria; (1) representative particles from the stack flow must be drawn into the ...
-
New technologies for measuring the humidity of biomass
Methods applicable to a great variety of solid biofuels In recent years, systems have sprung up which use near infrared X-ray (NIR) spectroscopy, radio frequency (RF) and microwave spectroscopy as alternatives to the traditional method of measuring humidity by weight difference in the fuel burner. What these methods have in common is that they can be used for a great variety of solid biofuels, ...
-
Tower rescue: first-in operations and the IAP
Across the country “tower” type rescues are becoming more and more common. Accordingly, there is a growing need for local rescuers to be aware of these sites in their response areas, pre-plan for different rescue scenarios, and train their specialized rescue personnel to the appropriate level in order to facilitate the rescue in a safe manner. Tower rescues have become so prevalent, ...
-
What is a Spectrometer?
In the broadest sense a spectrometer is any instrument that is used to measure the variation of a physical characteristic over a given range; i.e. a spectrum. This could be a mass-to-charge ratio spectrum in the case of a mass spectrometer, the variation of nuclear resonant frequencies in an NMR spectrometer or the change in the absorption and emission of light with wavelength in an optical ...
-
Working Principles of Air Monitoring: Light Scattering; Electrochemical, NDIR, PID
Oizom has years of experience in stimulating innovation by creating groundbreaking technology for environmental monitoring. With an IoT-based development approach, Oizom has been able to successfully unlock multiple solutions, catering to various industries. Our sensing technology works on proven working principles like NDIR, Electrochemical Analysis, Semiconductor, Optical Measurement, and ...
-
DNA and radiobiological material bank of persons exposed to ionising radiation
The structure of the DNA and radiobiological material bank of the Seversk Biophysical Research Center is described. Workers of the Siberian Group of Chemical Enterprises (SGCE) and their relatives are the subjects of the storage. Cytogenetic analysis, including Gbanding, is being performed for the participants. Currently, the bank contains 700 DNA and blood samples of workers of SGCE, 123 DNA and ...
-
Low natural terrestrial radioactivity in oil–derived lubricants
Oil and gas production processing operations have been known to involve naturally occurring radioactive materials that lead to internal and external radiation hazards and thus a significant radiation dose to the workers. In this work, samples of nine oil lubricants used on a daily basis were collected from local suppliers in Egypt and analysed to determine their natural radioactivity. The ...
-
Natural radionuclides in Niger delta sedimentary organic rock samples
Thirty sedimentary organic rock samples were collected at different depths from three oil wells in the Niger Delta. The natural radionuclides in the samples were measured in order to determine their geochemical significance and radiological effect. The radionuclides were measured using gamma spectrometric technique. Natural occurring radionuclides identified were uranium, thorium and potassium. ...
-
Sunscreen’s Dark Side
In 2013, more than 200 million tourists sunbathed on Mediterranean beaches. You can bet that most of them applied sunscreen. That sunscreen may be valuable for preventing skin cancer for humans, but it can also wreak havoc on marine ecosystems. A new study published in Environmental Science & Technology found that when sunscreen washes off a person into the ocean, certain ingredients react ...
By Ensia
Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you