Wrist bands have been a fashion item for a long time. More recently the silicone wrist band has become hugely popular.

Silicone wrist bands, also called awareness braclets were first used by the cycling legend Lance Armstrong, in support of people fighting cancer.

Since then they have become a poplular fund and awareness raising item for many charities.

The wrist bands a made in many colours and with each becoming associated with a type of cause. Usually the they have a message on the band.

The following is a sample of the causes and organisations associated with the various colours:

Yellow

• Boston Bruins
• Suicide Awareness
• Work Safe Week
• Pope John II rememberance
• Support Our Troops
• Parkinsons Disease
• Livestrong

Green

• Boston Celtics
• Tsunami Relief
• Ovarian Cancer Awareness
• Kidney Disease Awareness
• Army Support
• Brain Injury
• Rainforest Preservation

Blue

• “Never Again” for the prevention of Genocide
• Anti-drugs
• Anti-Drunk driving
• Pro-life
• UNICEF
• V8 Supercars
• All Cancers
• Anti-Bullying (Beat Bullying)

Black

• I Don’t Buy It ( Anti Tobacco)
• Never Again ( American Genocide Awareness)
• Geek

Purple

• Celebrate Hope

Pink

• Breast Cancer
• Teenage and Childrens Cancer

Orange

• Smoke Free
• Leukemia
• Self Harm
• Bowel Cancer

Red

• Courage (AIDS)
• Ant-Child Abuse
• Christian
• Ronald McDonald House Charities
• Boston Red Sox

Chemistry has been divided into a number of different branches. They are generally recognised as Analytical Chemistry, Biochemistry, Inorganic Chemistry, Organic Chemistry, Physical Chemistry, Geochemistry and Nuclear Chemistry.

While they may be positioned a being quite separate there is significant overlap between them and between the other different branches of chemistry.

The following is a basic description of the different branches of chemistry:

Analytical Chemistry
The collection of techniques and methods used to gain an understanding of the chemical composition and structure of materials. Qualitative and quantitative methods are two of the more basic methods used in this discipline. The methods can be used in all the other branches of chemistry.

Biochemistry
The chemistry of life-processes and living organisms.Biochemistry and organic chemistry are closely related.Biochemists focus on the structures of biological molecules and their physical properties.Common biological molecules include carbohydrates, proteins, lipids and nucleic acids.

Inorganic Chemistry
The study of reactions and properties of compunds which do not contain hydrocarbons – carbon and hydrogen and which are not organic.

Organic Chemistry
The study of compounds consisting primarily of hydrocarbons which provide the primary material of all organic compounds. Hundreds of thousands of carbon-based molecules exist becuase carbon atoms are able to form long branched chains and rings. Because they make up the majority of compounds in living organisms organic compounds are of special importance. They form coal and oil. Some of the most studied organic compounds are those that contain nitrogen. This is because These have importance because they are linked to amino acids which are the building blocks of proteins and life.

Physical Chemistry
Physical Chemistry deals with the application of physical laws to chemical change and chemical systems.

There are several subcategories of physical chemistry, including chemical kinetics, electrochemistry and thermodynamics. The later is widely studied and deals with the role of energy in chemical reactions. Chemical kinetics is concerned with mechanisms and rates of reactions. Electrochemistry is concerned with the effects of electricity on chemical changes as well of the conversion of chemical to electrical energy and vise versa.

Nuclear Chemistry
The study of the chemical effects of high energy radiation and the behaviour of radio-active isotopes. These are atoms of the same element that vary in the number of neutrons they contain.

Geochemistry
The chemistry ( and physics) of processes taking place in the earth. Examples are the formation of petroleum, the metamophosis of rocks and mineral formation.

One of the latest developments in web design is AJAX. It’s been a popular discussion point in forums and news groups for some time now. But what are Ajax fundamentals and how can they benefit you?

AJAX is short for Asynchronous Javascript and XML. Its web design method for creating interactive web applications. Let me explain further.

In a standard web page (HTML) you might enter some information into a form. Lets say your looking for the phone number of someone you know. Perhaps you enter their last name, first name and city. Then you click “search” and a page is returned with a list of people who fit your description. In this example you receive a web page, send some information and get another web page back.

If the same example was coded with AJAX, as you are entering the details, the website could be presenting a series of possible matches. No need to necessarily complete the information and no need to click the search button and wait for the returned web page.

As you can appreciate AJAX has the potential to make your WebPages much more interactive by allowing “on the fly” information transfer, including database enquiries to be completed in real time.

The term AJAX was coined just recently. According to Wikipedia the first public use of the term was by Jesse James Garrett in his February 2005 article Ajax: A New Approach to Web Applications

It’s important to note that AJAX is not a technology in itself – just a group of technologies used in a particular way.

While the term “AJAX” is a recent development, most of the technologies which make it up, start a decade earlier in work by Microsoft to develope Remote Scripting.

Here are some examples of the technology in action: Clearnova, About.com Ajax example page and the Instant Domain Search page. There are many Ajax examples in these pages.

If you need more in-depth information see these AJAX tutorial sites: W3Schools and Telerik.com. Sitepoint also has a useful Ajax tutorial.

There are Ajax community forums available too. See AjaxTalk.com and AjaxToday.com.