medical publications |
||||||
|
News for 11-Jan-25 Source: MedicineNet Prevention and Wellness General Source: MedicineNet Senior Health General Source: MedicineNet Senior Health General Source: MedicineNet Prevention and Wellness General
|
The Best medical publications websiteAll the medical publications information you need to know about is right
here. Presented and researched by http://www.md-news.net. We've searched
the information super highway far and wide to provide you with the
best medical publications site on the internet today. The links below will
assist you in your efforts to find the information that you are looking
for about
medical publications
A reduction in overheads means that medical publications retailers are able to offer substantial discounts for online purchases. In many respects they change from medical publications retailers to medical publications wholesalers. Who benefits from this ... you do. The only way for you to determine the price differentials on offer is to click on the links for the medical publications merchants which we have listed above. These links will take you directly to their website where you will be able to compare their online products with those in normal medical publications retail outlets. We definitely think they are worth a visit. medical publications
I'm aware of the needs of people searching the net for medical publications information and I plan to create a directory of valuable links to medical publications sites. Every site I list, such as the examples below will carry recommended reading and I'm sure every visitor will be delighted with what they find. Here's just a small example of the links you will find in the future, I'm sure if you visit the site you will not be disappointed. Right now I'm working on making my medical publications site bigger and better, it's turning out to be a much largerr task than I expected, but because I am passionate about medical publications I work with great purpose so it's not really work. I invite you to call back sometime and I'm sure I'll have it completed and maybe you can pass on my url to your friends that have similar medical publications interests. 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.
|
|||||
|
http://www.medmeet.com/ |
||||||
| Talk On The Net Meetings On The Net Take It Correctly |