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The Best online security training website

All the online security training information you need to know about is right here. Presented and researched by http://www.mdnewscast.net. We've searched the information super highway far and wide to provide you with the best online security training site on the internet today. The links below will assist you in your efforts to find the information that you are looking for about
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We will bet you have felt lost in your search for online security training information, after all the net can seem like a labyrinth of misinformation about online security training. Well do not worry, sit back, have a coffee, relax because you have finally found a web site which can service your online security training needs.

The sites are operated by gurus in the online security training field but on the off chance that the sites do not provide you with the online security training information you are looking for, please come back and navigate through the menu on the right.

online security training

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What determines which online security training sites attract advertisers? Sites whose audience demographics match those of the advertiser's customer base. For instance, companies who sell online security training to businesses, want to pitch their message to executives who making decisions in that area. To put it bluntly, the online security training advertiser wants to get their message to you, the consumer. That's why they use appropriate and appeal banners and links like those shown below.

Once again, the online security training demographics of the Web are a key factor in determining whether this strategy works. It's vital to understand who uses the Internet and who visits the online security training sites. Although computer technology makes it possible to gather some very specific data about site visitors, some demographic information is best gathered by asking you for your feedback. That's why many websites require you to register. They're trying to figure out who you are and what your particular interest in online security training might be.

Sick Building Syndrome and Indoor Climate Control

 by: Simon Fowler

The problem of high levels of CO2 in ambient air appears to be a modern one. Yet, this is not one of the new fads that crop up from time to time and then disappear again, never to be mentioned again. It is, indeed, a modern problem, caused by the improvements in building standards and especially window manufacture. These improvements, hailed as a triumph over the age-old problem of draughty buildings, have nevertheless created a new negative effect. Ventilation was never a matter for discussion in most cases, it happened naturally as the wind blew and the air in rooms was replaced on a regular basis. With the new, draught-proof buildings this no longer happened, particularly since central heating made it unnecessary to have an air flow for any reason. This has given birth to the concept of indoor climate control.

The result was stale air. Air that has been used and breathed and not replaced, seen as a rising concentration of carbon dioxide, not to mention humidity. These effects had a detrimental influence on the buildings, promoting the growth of mould and other unwanted plant life. This was not the only effect. Slowly, the level of days off for sickness rose and the quality of work sank in these newer or refurbished buildings, leading to something referred to as Sick Building Syndrome, since it appeared to affect everybody in one building. The causes were not known for a long time, but now it is recognised that this is a result of breathing stale air with a high concentration of carbon dioxide over an extended period. Studies have shown that a level of 1000 ppm carbon dioxide will reduce the ability to concentrate by about 30 %, a significant drop by any means.

The obvious solution to this problem of indoor climate control was ventilation, and ventilation or air-conditioning systems were installed in all of these buildings leading only to the next problem: the heating bills in winter rocketed and staff complained of stiff necks and other maladies. Sick Building Syndrome was still here, but in a different form. How to provide adequate ventilation without simply heating the environment in winter? The only viable solution is control of the ventilation to reduce the exchange of air to the minimum required to keep a healthy atmosphere in the rooms, which is where indoor climate control becomes an active instead of just a passive discipline.

The real problem is the carbon dioxide, which is best measured with a NDIR infrared sensor. These are available in one or two channel technology for CO2, but the single channel version is quite accurate and stable enough for this purpose today. Older types of sensor used to drift, as do cheaply manufactured ones, but a good-quality single channel sensor today will remain stable over years, only requiring a reference point occasionally to set a relative zero point. Such infrared sensors for CO2 are now available from a number of manufacturers such as Madur Electronics in Austria. These come complete with an appropriate analogue output to allow the CO2 level to control the function of the ventilation system. Industry standard for these control functions is the 0…10 V output, but there are other varieties in use. These can be readily accommodated in the construction or calibration of the system to ensure a high quality of indoor climate control. Perhaps we have finally seen the end to Sick Building Syndrome and can now enjoy the benefits of a controlled climate indoors, if not outdoors.

About The Author

Simon Fowler studied mechanical Engineering in London and now work for an electronic company in Vienna, Austria manufacturing flue gas analysers and infrared sensors.


http://www.madur.at/index_gb.html


sales@madur.at

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