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2012年7月16日 星期一

Controlling the Speed of Infectious Disease in Educational Buildings


To effectively stay ahead of flu season, universities must analyze their current air conditioning system to determine its indoor air quality (IAQ) effectiveness. Know more on how the right air conditioning in Florida Universities can help prevent the flu with this article

In 2004 Dr. Mark Mendell published a study in the Journal of Epidemiology contending that people who spend a lot of time in air conditioned buildings have more health problems such as breathing difficulties, skin irritations, headaches and exhaustion. The study targeted poor a/c ventilation, which trapped bacteria and germs then disseminated them throughout the building.

Wet ceilings and walls due to humidity levels found in many South Florida universities can also become breeding grounds for bacteria and mold when the air condition system malfunctions.

The US Environmental Protection Agency (EPA) acknowledges that the notion of a "sick building syndrome" exists when the air conditioning system attracts pollutants and fails to effectively disseminate good quality air throughout the room.

The best way to combat "sick building syndrome" at colleges and universities throughout South Florida is to install a multi-parameter demand control ventilation conditioning system. This advanced technology automatically senses pollutants in the building. The sensor analysis then informs your university building ventilation controls so that ventilation rates can be optimized based on actually indoor environment. This system can reduce airborne viral and bacteria sensor counts by 90% in addition to identifying non-human pollutants.

Look for a Florida air conditioning contractor that offers the most innovative IAQ Solutions

To effectively stay ahead of flu season, universities must analyze their current A/C system to determine its indoor air quality (IAQ) effectiveness. A Florida air conditioning contractor can examine several areas of your system using one of these methods:

• Vacuum pump-examine the filtration and airborne particle detection ability

• Direct-reading Meter-determine the sensitivity level of detection qualities

• Detector Tube Kit-hand pump that draws air which reacts with chemical compounds

• Personal Monitoring Devices-measures the level of contaminant exposure to specific chemicals and pollutants

Detecting trouble with an existing system may identify the problem, however only a highly skilled Florida air conditioning contractor can remedy your university's air conditioning issues.

Look for an air conditioning contractor that offers the latest IAQ technology such as ventilation management and control systems. This type of system can detect and filter pollutants such as volatile organic compounds, respiratory-sized particles and carbon monoxide. Once detected, containments are diluted by fresh air which reduces the likelihood of infection and disease.

Why You Should Choose a Florida LEED Certified Company

LEED (Leadership in Energy and Environmental Design) certification supports and encourages green building development practices, which contribute toward energy efficiency, environmental protection, health and sustainability. Demand controlled ventilation systems are a pathway toward becoming LEED certified in Florida. Installing a LEED certified air conditioning system in your Florida university can not only contribute toward the health and well being of students and faculty, but becoming LEED certified also provides money saving credits. Specific criteria must be met in order to ensure your retrofit or new construction project is given the LEED seal.

Before you seek Florida LEED certification ensure you are working with a trusted LEED certified HVAC company:

• Look for a Florida HVAC company that hires LEED accredited professionals on staff, including a LEED Charrette Facilitator.

• Ask the HVAC consultant about partnerships with other LEED contractors and consultants, which contribute toward a more efficient and complete job.

• Inquire about the company's tenure in the Florida area; the number of LEED based jobs completed and typical job turnaround times.

According to the Centers for Disease Control, 22 million sick days can be attributed to the common cold with even more due to influenza and the H1N1 virus. Most colleges and universities follow a common sense approach to thwarting the spread of infectious disease like encouraging hand washing, making hand sanitizers easily accessible and recommending sick students stay home. More and more universities are also installing multi-parameter demand control ventilation air conditioning systems to further protect students from the spread of infectious disease.




Hill York is the only MSCA Green Star Certified mechanical contractor recognized by USGBC in Florida Provides air conditioning in Florida. We offers full-service air conditioning and energy solutions including Energy Management, leed certified company Design/Build, Facility Management. For more visit http://www.hillyork.com





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2012年6月25日 星期一

Glucose Monitors - Managing and Controlling Diabetes


Glucose monitors play very important roles in controlling diabetes. Health professionals are one in underscoring the benefits of blood glucose monitoring for managing diabetes and good health in general. Continuous monitoring helps diabetics avoid serious complications. Before, urine testing was done to check for glucose levels. Today, it is no longer recommended and is no longer reliable. Blood glucose monitors or meters are better at the job. Yet still, urine testing remains a primary tool today in diabetes care as it used in the detection of ketones.

Glucose monitors checks the concentration of glucose in the blood, called glycemia. Blood is tested for glycemia content by these monitors. The skin is pierced by a lancet, normally at the finger tips, to take a small amount of blood as sample. This is then placed on a disposable strip which would later change in color or electrical property depending on the type and result of the test. The visual strip type changes in color as blood reacts with chemicals on the test strip. The resulting change in color varies according to glucose concentration. The electrical device type is measured with an electronic meter. Within a few seconds, the digital meter displays the glucose level. It takes from 5 to 60 seconds to read results, varying from model to model. Alternative sites have been suggested for drawing blood samples but they normally do not compare with the finger tips in reflecting rapidly changing levels of glucose.

Glucose monitors are essential in home blood glucose monitoring (HBGM). Several models have come out in the last thirty years. The first units appeared in the 1970s. They were huge and bulky by today's standards. The first devices used the same visual colorimetric system that is still in use in urine test strips. These would require 30 micro liters (µl) of blood samples, referred to as hanging drop, which are quite large compared to only 0.3 to 10 micro liters for today's units. The sizes of the newer monitors are about the size of the palm of an adult's hand. Some models are even smaller while a few are a little larger. Instead of disposable strips, some models have discs that can be reused.

More and newer monitors now have the capability for data transfer. Readings may be downloaded onto a computer that has corresponding diabetes monitoring software through cables or infrared. Some can even be linked to insulin injection devices and PDAs. All monitors feature clocks and memory to store past results. These functions help a person with diabetes to better manage, keep a record, and watch for patterns and developments.

The accuracy of glucose monitors are at about ±10 to 15%. But more factors should be considered regarding these numbers. Elements that may influence accurate readings include the temperature in the immediate surrounding area, humidity, the person's intake of drugs that will be present in the blood, dirt on the meter, calibration of the monitor or meter, percentage of red blood cells in the blood sample, the strips to be used are either new or already old, and the quality and amount of the blood sample. These factors may compromise an accurate measurement. A good way to check and test for accurateness of the monitors is for the user to check for himself the glucose levels at about the same time that a blood sample has been drawn when visiting a doctor and then make comparisons.

Continuous glucose monitoring (CGM) systems make use of a small sensor that is inserted under the skin. They measure levels of glucose in tissue fluid. The individual must wear the sensor in the same place for up to a week. Then it should be replaced. The sensor, after measuring glucose levels, transmits this information to a wireless monitor that may be carried around or worn. However, CGM models are not as accurate and reliable as standard units. They are also much more expensive. In exchange for the higher cost is the ability of the individual for a closer and better glucose monitoring and control. CGM devices can take real-time readings at every 5- or even 1-minute intervals. These come with alarm functions that can warn the diabetic of a too low or too high glucose levels. They also have data transfer capabilities for closer tracking and analysis similar to conventional monitors.




Looking for the best products and lowest prices on Glucose Monitors? We compare the best products and show you the lowest prices online at the Heart Rate Monitor Center





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2012年3月7日 星期三

Controlling a Greenhouse Environment


Once you have put up your greenhouse, it is time to make it do what it was intended to do - foster the rapid and healthy growth of the plants inside it. The strength of a greenhouse lies in the ability to control the climactic conditions inside.

One such significant climactic condition is temperature. You need to have the right temperature if you are to realize optimal plant growth. Light is another important consideration. Note that one climactic factor may have an impact on another. For instance, too much sunlight inside the greenhouse can raise the indoor temperature beyond the appropriate levels.

There are a number of actions you can take to manage the impact of external weather changes to the greenhouse's internal atmospheric conditions.

a. Ventilation - Every greenhouse should be built with two forms of ventilation in mind - natural and artificial ventilation. For natural ventilation, you need only appropriately position a number of outlets and inlets to allow the natural flow of air in and out of the greenhouse. Electricity may or may not be used but this would only be for controlling opening and closing the inlets or outlets. While natural ventilation is a great cost saver, it is ineffective in locations with high outdoor temperatures.

And this is where automatic ventilation comes in. Auto-ventilation regulates indoor temperatures using electricity powered louvers and exhaust fans. The difference between automatic ventilation and electricity-powered natural ventilation is that the former is usually part of a larger air conditioning system that detects temperature and powers the louvers and fans accordingly.

b. Cooling - When ventilation alone is inadequate to manage the temperature within the greenhouse, a different approach is required. Two common strategies used to control temperature and that can augment ventilation are: fog systems and pad-and-fan systems.

Fog systems use nozzles installed every 50 to 100 feet in the greenhouse to evenly distribute a cooling 'fog'. It is expensive because clean water must be used to prevent the tiny mouth of each nozzle from getting blocked.

Pad-and-fan technology goes hand in hand with automatic ventilation. Evaporative pads are installed at air inlets and cool the air entering the greenhouse. The cool air circulates within the greenhouse picking heat in the process before it is pulled out via the exhaust fans.

c. Humidity - Humidity must be kept in check to prevent plants from succumbing to disease. High moisture content in greenhouse air increases the amount of condensation on plants thus hampering respiration. High humidity is also a breeding ground for pests and fungal plant diseases. To better manage humidity, the vapour pressure deficit (VPD) must be measured regularly and maintained at the optimum level of 0 to 1 psi. VPD is a calculation of atmospheric humidity versus the humidity at which water condensation will start.

d. Shading - Shading is a means of temperature and light control that uses automatically operated shades or blinders. The shades close when there is too much sunlight during the day or if warm temperature needs to be retained in the greenhouse at night. A sensor detects internal temperature and triggers the shades' opening or closing.




For more information on Greenhouses please visit:

http://www.buildagreenhouseeasy.com/keeping-your-greenhouse-pest-free/

Thanks, Jonathan Miranda





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