History and Principle

In 1824, Sir Humpry Davy, in a series of papers presented to the Royal Society of London, first described the cathodic protection design. Davy found that he could preserve copper in sea water by the attachment of small quantities of iron or zinc; for Davy the copper became “cathodically protected”. The first noted application of cathodic protection was to the HMS Samarang.

In 1834, Michael Faraday, the one who assisted Davy on his experiments, discovered the quantitative connection between corrosion weight loss and electric current and thus laid foundation to the modern application of cathodic protection. After Faraday’s discovery, other series of experiments was conducted such as those of Thomas Edison in 1890.

Cathodic protection principle is in connecting outside anode to the metal for protection and electricity is passed in order that the surface of the metal is cathodic therefore preventing corrosion. A sound cathodic protection design involves half cell (a structure that contains a conductive electrode and a surrounding conductive electrolyte) with test point all over the protected area.

There are two ways in achieving cathodic protection. It is either by using galvanic anodes (also called sacrificial anodes) or by using “impressed current”. Cathodic protection using galvanic anode systems uses reactive metals as secondary anodes and they are directly connected electrically to the steel to be protected. Commonly used metals as sacrificial anodes are aluminum, magnesium and zinc. They are alloyed metals are used and they are used to improve lasting performance and dissolution characteristics. Cathodic protection using impressed-current systems uses inactive anodes and uses an external source of dc power to impress a current from an external anode onto the cathode surface.

“Cathodic protection design which involves a half cell with test point all over the protected area can be used to prevent corrosion”

INSTALLING CHAIR RAILS AND CROWN MOLDINGS

Installing chair rails and installing crown moldings will increase the value of your home by almost 30% according to recent real estate studies. These are two of the most popular DIY home improvement project because they are fairly easy to do and do wonders to the perceived value of your home. For design inspirations, there are many online resources for pictures for dining rooms with chair rails. Browsing through these pictures will give you an idea on the look you want to achieve for your dining room. Here are some tips on how to make these DIY home improvement projects successful;

· Carefully measure the entire area where you want to install the chair rails and crown moldings. If you have a period style home, then decorative chair rails and crown moldings are the perfect moldings material you will need for your project. Make sure that the design of the chair rails and crown moldings complements each other.

· Used as a decorating accent, using chair rails to frame a wall mural will add a design centerpiece for your dining room. Murals with landscape, gardens and other outdoor sceneries are great for dining rooms. Chair rails can also be used to make a faux window. A garden scenery wall mural when framed with chair rails will give your kitchen or dining room a countryside ambience. For best results, add curtains or draperies behind the faux window to make it look real.

· Crown moldings cover the gap between the walls and the ceilings. Rooms with higher ceilings needs wider crown moldings, usually with 4 inches up wider and rooms with lower moldings need moldings with 2-3 inches wide.

Things You Need To Mull Over Before You Apply Abroad: Learn Mandarin Fast And Easy

Are you by any chance contemplating of how and where to apply abroad? Well if you are, surely China is one of your main considerations as far as knowing the right places to go to is concerned. You may want to consider China an aim to earn money abroad while teaching English. Here are just a few other things you might want to know of before taking some Chinese lessons to help you fulfill your plans to apply abroad:

1. Find the best school that will teach you Mandarin quick and easy.

Make sure you get hold of a school that will teach you the basics of speaking Mandarin. Check out the various Universities in China wherein you can enroll yourself in a six-week class studying the lingo and at the same time giving yourself a chance to get immersed in the real ways of life and culture of the Chinese people. In that way, learning the language will surely be easier and achieved in no time.

2. Go for the more modern Chinese classes.

Keep in mind that to learn how to speak, especially write Chinese is a truly complicated and taxing task. So, it can help you a lot to opt for the more modern way of learning Mandarin because such modules have better ways of teaching you how. In other words, before you finally immerse yourself in such an endeavor, imagine all the syllables and characters you will need to learn, not to mention the tone you will have to master since in Chinese, what you will learn is totally different from the English phonetics and alphabet.

3. Look around for better job opportunities for you while studying.

In case you have decided to go for China and have taken the first major step to take some Mandarin lessons, make sure that you will also eventually look for greener pastures in China . In that way, you will be able to get the most out of your investments. Naturally, you will reap the rewards that you have always hoped for in the first place.

3 Tips On How To Install Crown Moldings: Beautify Your Home By Installing Crown Moldings Correctly

Make your home look elegant and tastefully beautiful by learning how to install crown moldings. You will usually see them at the walls and ceilings of a home. They come in a wide assortment of designs from the very plain ones to the very intricate. That is why it all the more becomes necessary to learn the tricks of how to install crown moldings before finally deciding to have one in your home. Here are just a few of them to help you get started:

1. Check out the materials.

First and foremost of course, you will need to check out the materials you will use for installing such crown moldings. Imagine how you would like your ceiling and wall to look like so you will have an idea of what you will need to do. For stylish ideas, use plaster to craft elaborate designs. But then if you are an amateur in crown molding, avoid using plaster since they can crack at once. Consider solid wood instead which is perfect for both plain and complex designs. But then, although they won’t easily crack, they are known to be not easy to cut. So your last option should be to use the Medium Density Fiber Board which is light and inexpensive and takes on the look of real solid wood.

2. Get the measurements.

When getting the measurements, make it a point that you allow for some 10% linear spacing. Then cut the crown molding and place in the so-called miter box and at the same time, make sure that the flat surface of the crown molding will touch on the ceiling and the other side on the walls.

3. Work on the adjustments.

Then, cut 45 x 90 degree corners or make the necessary modifications. Look into the joist or support in both the ceiling and wall studs after which you may then screw your chosen wood which has been pre-cut 2x2 inch-size. Lastly, make sure that you firmly fasten the crown molding you have installed by using some 6D or 8D finishing nails.

Follow these three simple tips on how to install crown moldings and you will surely get surprised with the new and stylish look that you have gracefully bestowed to your home.

Dermatology – Get Treated Under FDA Approved Process!

Now you can easily avail FDA approved dermal filler like dermatology skin care that can make your skin better than before. This is a unique calcium based product or a micro sphere that will be suspended within a natural gel. It needs to be injected into the patient’s skin with the use of a safe and absolutely non-invasive method. If you are looking for the best cosmetic treatment of wrinkles, then it’s the Radiesse that can offer you better results. This is injectable as well as non toxic filler that can even cure acne and scars like skin problems successfully. The tumescent liposuction is one kind of the surgical treatment done by the dermatologists & plastic surgeons to help patients in achieving more desirable size.

Whereas liposuction must never get used as the replacement for healthy diet & exercise, it is viable choice for people who have recently lost lots of weight however have some remaining pounds that they will not get rid of. The tumescent liposuction makes use of dilute anesthetic through local infusion to make the space between muscle & fatty tissue. The space allows more of room for liposuction cannula & minimizes the systemic anesthetic toxicity. Cryosurgery is performed on the outpatient basis from clinic & is been used to treat the warts, skin cancers, and other disorders with the liquid nitrogen. Risk of the side effects as well as healing time are very minimal, and making therapy common & safe.