Saturday, December 17, 2011

Radon Measurements by Etched Track Detectors: Applications in Radiation Protection, Earth Sciences and the Environment

!±8±Radon Measurements by Etched Track Detectors: Applications in Radiation Protection, Earth Sciences and the Environment

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Post Date : Dec 17, 2011 11:00:45
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Exposure to radon gas, which is present in the environment naturally, constitutes over half the radiation dose received by the general public annually. At present, the most widely used method of measuring radon concentration levels throughout the world, both in dwellings and in the field, is by etched track detectors - also known as Solid State Nuclear Detectors (SSNTDs). Although this is the most widely used method and is also the simplest and the cheapest, yet there is at present no book available on the market globally, devoted exclusively or largely to the methodology of, and dealing with the results obtained by, the SSNTD technique. The present book fills this important gap in the coverage of radon measurements. Individual chapters of the book are contributed by some of the most prominent and active research workers in the world in the SSNTD discipline as well as in the field of radon measurements.

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Monday, December 12, 2011

Low Cost Geiger Counter

!±8±Low Cost Geiger Counter

Brand : Quarta Radiation Monitor
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Price : $179.95
Post Date : Dec 12, 2011 18:51:06
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Excellent geiger counter for the money!

Designed for evaluation of ambient dosage of gamma radiation, which can be done by ordinary people in domestic environment (homes, office, food products, construction materials, soil, etc.). Also, the instrument can be used by industrial personnel, working with ionizing sources of radiation. Moreover, the instrument can detect objects, polluted by beta active radioactive nuclides.

The instrument uses a Geiger counter to detect the amount of gamma radiation within 40 sec. and indicates the values in µSv/h and µRem/h on an LCD screen. Registration of every particle is indicated by a click sound, which makes it possible to quickly determine the location of hot spots.

Incorporates the following features: audio alarm with 3 adjustable thresholds, continuous updating of readout in proportion as duration of measurement increases, display illumination, MENU in English. CE. 3 year factory wty. Radex Model RD1503.

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Tuesday, October 18, 2011

Geiger Camera - Use your iPhone as a Geiger Counter

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Friday, September 30, 2011

Fantech HP190 Radon Inline 4" or 5" Round Duct Stepped - 157 cfm

!±8±Fantech HP190 Radon Inline 4" or 5" Round Duct Stepped - 157 cfm

Brand : Fantech
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Post Date : Sep 30, 2011 14:28:24
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Fantech HP190 Radon Inline 4" or 5" Round Duct Stepped - 157 cfm

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Saturday, September 3, 2011

Calculations fans - Measure Airflow with CFM

!±8± Calculations fans - Measure Airflow with CFM

With a formula you can find what the fan is right for your home. This is the formula for fan CFM air velocity (feet per minute) X area (square feet) = CFM: Cubic feet per minute, known more commonly known as CFM is calculated using the following formula. Not everyone will look at CFM, but for those that do, it is a useful tool. In simpler terms than those of the formula is the amount of air a fan moves.

The amount of air depends on several other factors, as well as theDiameter and shape of the leaves, the speed at which the blades turn (revolutions per minute or RPM), horsepower (HP), and a total of fanless design. These factors combined to determine the flow of moving air with a fan. Fan capacity is measured in cubic meters, and this is as CFM (cubic feet per minute determined.)

CFM and RPM are the two most important things to look at the fan so that it ensures the effective and efficient operation. If you only knowRPM, CFM, not the other, or vice versa, you should feel secure in your purchase fan. As long as you know one of the calculations, you are assured of a smooth operation of the fan. However, if you agree with these calculations are not satisfied, this is not the only criterion used to evaluate the performance of the fan.

One of the most important titles in the second to CFM and rpm range noise decibels or evaluation, followed by the vibration qualification later. Search the noise of the fan ratedSones or decibels. Check this when the CFM or RPM still insecure about leaving the selection of the fan.

A standard measure of air flow to many cubic meters of air passing a stationary point in 1 minute. The higher the number, the more air is forced through the system. The flow of a liquid or gas in cubic meters per minute is equivalent to the corresponding CFM, and CFM to about 2 liters per second.

Fans of producers based their measurements on a standardMeasure with a clean, dry air mass with a density of 0.075 pounds per cubic foot, the atmospheric pressure at sea level of 29.92 inches of mercury and a temperature of 70 ° C. These are standard measures used to determine SCFM: cubic feet per minute.

With the use of CFM and RPM, you can make an informed choice when choosing your ceiling home, discharge, or table fan, and know what you get!


Calculations fans - Measure Airflow with CFM

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Monday, August 22, 2011

Kidde SL177i Fyrnetics Hardwire Strobe Light for the Hearing Impaired, Interconnectable

!±8±Kidde SL177i Fyrnetics Hardwire Strobe Light for the Hearing Impaired, Interconnectable

Brand : Kidde
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Price : $72.99
Post Date : Aug 22, 2011 11:21:18
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The Kidde SL177I is a 120VAC wire in unit that provides a visual warning when part of an interconnected system. This unit can be directly connected with Kidde smoke alarms, heat alarms and carbon monoxide alarms. This unit provides a visual alert of danger for the hearing impaired, but they have no detection means and must be used in conjunction with operating smoke, heat or carbon monoxide alarms.

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Thursday, August 18, 2011

Checkpoint IIa Radon System Alarm

!±8± Checkpoint IIa Radon System Alarm


Rate : | Price : | Post Date : Aug 18, 2011 22:55:05
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This radon system fan monitoring device provides audible and visible warnings when the radon fan ceases to operate. Ideal addition to a radon mitigation system that is not being inspected regularly.

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Monday, August 15, 2011

Why buy a detector of radon gas?

!±8± Why buy a detector of radon gas?

In many parts of the country, radon is a problem. The radioactive gas may leak into your basement through cracks and holes in the foundation where it can accumulate at risk. Radon is considered a major cause of lung cancer after smoking.

When purchasing a new home is to test standard in most states for a home inspector, radon concentrations. The test is usually in the lower part of the house that is for most people in the basement done. The test isusually in "closed house conditions" means that no windows or doors must remain open, while the test is carried out through out.

And 'during these tests at home inspection, that most people with radon. The EPA has developed guidelines for safe conditions to 4 set the PCI / L or less of radon in a home. If you buy a new home and the home inspection has found that higher than this, then a radon-reduction system mustinstalled.

But even after the installation of a radon reduction system, it is useful to monitor the current levels of radon in your home. As known, the concentration of radon in a home often, vary with the seasons, it is useful to know what levels after installation. Or reduce the system fails in some way, an alarm announces the accumulation of radon would be useful

Similarly, if your home has radon concentrations below the pCi / L 4 guidelines, but are stillhigh (1-3 pCi / L), there is still some potential risks to health. In this case, it is recommended to monitor the conditions in your home, make sure that the values ​​do not increase over time.

One-use test kits and electronic gas control (multi-use): home radon testing two basic forms. While electronic detectors of radon gas will cost more money upfront, they will be in time to save money, you must use the test kits more. Most electronic radon monitors contain an alarm to warn,It is necessary to increase the levels of indoor radon at a dangerous level.


Why buy a detector of radon gas?

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