Tuesday, April 10, 2012

How to Avoid Infections From Cosmetic Makeup

       Cosmetic has become more and more popular. Anyone can get some cosmetics from certain cosmetic manufacturers. However, while cosmetic prevails nowadays, it seems that few people notice the importance of keeping your cosmetics clean and away from germs and bacteria. That’s what the cosmetic manufacturers don’t teach you.

       The following is the excerpt of the news entitled “How to avoid infections from cosmetic makeup” from ABC7, KABC-TV. If you want to know the complete news, please click the link on the bottom of this article.

How to avoid infections from cosmetic makeup
LOS ANGELES (KABC) -- Do you remember how long you've had your foundation or the last time you washed your brushes? If you don't take care of your makeup and how it's applied, experts say, it's quite common to get eye infections, rashes and breakouts.

Makeup is supposed to enhance your beauty, but with every brush stroke you could be placing something potentially ugly on your face.

Dermatologist Dr. Shirley Chi says the first mistake many women make is leaving their beauty tools exposed in the bathroom.

The eyes are the easiest place for bacteria to get in.

While sharpening and alcohol works well for pencils and brushes, some companies make disinfectant wipes and sprays. Chi says beware of using them directly on powders and shadows.

Dry products like eye shadow, blush and powder are not necessarily breeding grounds for bacteria, but you have to be careful about any liquids.
Disposable applicators can help, but experts say you should throw out foundation, mascara, liquid liner and lip gloss every two to three months. Products with pumps and squeeze tubes can be kept longer.

One other thing: whenever you get oily or start to shine, most women will just pull out their compact and apply more powder. Dr. Chi says you're just creating more germs and not getting rid of the oil that's already there. Try blotting first before applying powder.

(Copyright ©2011 KABC-TV/DT. All Rights Reserved.)

Choose the Best Solar Charge Controller

       A charge controller can limits the rate at which electric current is added to or drawn from electric batteries. It prevents overcharging and may prevent against over-voltage, which can reduce battery performance or lifespan, and may pose a safety risk. It may also prevent completely draining from a battery, or perform controlled discharges, depending on the battery technology, to protect battery life. Charge controllers are sold to consumers as separate devices, often in conjunction with solar or wind power generators, for uses such as RV, boat, and off-the-grid home battery storage systems. In solar applications, the solar charge controller may also be called solar regulators.
       Upon various solar charge controller suppliers, Morningstar Corporation is a world-leading supplier of photovoltaic (PV) controllers and inverters using advanced technology. Their controllers and inverters have set new standards in the industry for quality, high reliability and extended battery life. Their products are marketed through 164 highly qualified distributors in 73 countries. The authorized distributors are typically the leading solar distributors in each country. For instance, Hengs Technology is a professional and leading distributor of Morninstar charge controller in Taiwan.
       Established in 1998, Hengs Technology is a reliable company of solar products and applications, such as street light, solar outdoor lighting, rack, charge controller, battery, and delta arrestor, etc. They design and distribute renewable energy systems for residential, commercial and industrial use domestically and internationally.

Monday, April 9, 2012

The Applications and Operation of Synchronous Motor

       Single phase synchronous motor is available in small sizes for applications requiring precise timing such as time keeping, (clocks) and tape players. Though battery powered quartz regulated clocks are widely available, the AC line operated variety has better long term accuracy - over a period of months. This is due to power plant operators purposely maintaining the long term accuracy of the frequency of the AC distribution system. If it falls behind by a few cycles, they will make up the lost cycles of AC so that clocks lose no time.
       Synchronous motor is available in sub-fractional self-excited sizes to high-horsepower direct-current excited industrial sizes. In the fractional horsepower range, most synchronous motors are used where precise constant speed is required. In high-horsepower industrial sizes, the synchronous motor provides two important functions. First, it is a highly efficient means of converting ac energy to work. Second, it can operate at leading or unity power factor and thereby provide power-factor correction.
       The operation of a synchronous motor is simple to imagine. The 'Stator' winding, when excited by a poly-phase (usually 3-phase) supply, creates a rotating magnetic field inside the motor. The rotor winding, which acts as a permanent magnet, simply locks in with the rotating magnetic field and rotates along with it. During operation, as the rotor locks in with the rotating magnetic field, the motor is said to be in synchronization.
       Once the motor is in operation, the speed of the motor is dependent only on the supply frequency. When the motor load is increased beyond the breakdown load, the motor falls out of synchronization i.e., the applied load is large enough to pull out the field winding from following the rotating magnetic field. The motor immediately stalls after it falls out of synchronization.

To Know More About 3D Laser Engraving

       The engraving form known as 3D laser engraving is a special type of engraving that involves either engraving on a three-dimensional surface on more than one edge at a time, or creating a 3D image with different levels of depth. Laser engraving, which uses a laser instead of a cutting bit, is better at this 3D process, because it can easily dig into the surface without a bit accidentally getting in the way or hitting previous engraving marks. The image to be used with 3D laser engraving is typically taken from a grayscale image, and the operator must know how to calibrate the grayscale to achieve the right depth and effect. There also are special laser engravers that are able to engrave beneath the surface of glass or crystal to create 3D images inside the material.

       The simplest version of 3D laser engraving is when more than one side of a 3D object is engraved into at the same time. For example, if someone wants a cube engraved, it will take less time to engrave several sides at once than to do each side individually. This type of engraving equipment uses two or more lasers simultaneously, and the user must have all the sides loaded into the program correctly or the engraving will come out wrong.

       Laser engraver varies widely in capabilities and the types of surfaces the machine can best engrave upon. X-Y table laser engravers work only on a two-dimensional surface. Others are capable of engraving on cylindrical objects or irregularly-shaped objects through the use of mirrors that direct the laser to the focus point. Sub-surface laser engravers are capable of focusing a laser below a transparent surface to produce a three-dimensional image that appears suspended within a crystal or glass object.

Sunday, April 8, 2012

The History and Evaluation of XLR Connector

       The XLR connector was invented by James H. Cannon, founder of Cannon Electric in Los Angeles, California (now part of ITT Corporation), and for this reason it was sometimes colloquially known as a Cannon plug or Cannon connector and in Japan as Cannon jack, though this term has since fallen out of common usage in the industry. Originally manufactured as the Cannon X series, subsequent versions added a latch (Cannon XL) and then surrounded the female contacts with a resilient polychloroprene, which resulted in the part number prefix XLR. There was also an XLP series which used a hard plastic insulation, but was otherwise the same. ITT Cannon originally manufactured XLR connectors in two locations Kanagawa, Japan and Melbourne, Australia. The Australian operation was sold to Alcatel Components in 1992 and then acquired by Amphenol in 1998. ITT Cannon continue to manufacture XLR connectors in Japan.

       The Switchcraft Corporation later started manufacturing compatible connectors, followed by Neutrik. Neutrik made a number of improvements to the connector and their second-generation design (known as the X-series) had just four parts for the cable connector and eliminated the small screws used by both Cannon and Switchcraft, which were prone to working loose, falling out, and becoming lost. These improvements made Neutrik the most popular brand of XLR connector.

       Unbranded XLRs are also made by far-east manufacturers. Originally these were copies of the Cannon or Switchcraft designs, but in recent years the Neutrik designs have also been copied.