Thursday, April 15, 2010

Carole Horlock - World's Most Prolific Surrogate Mother

Carole Horlock - Surrogate Mother
Carole Horlock is listed as the world most prolific surrogate mother, who has delivered 12 babies in 13 years, including triplets. The triplets' parents are a Greek couple in their thirties and the mother, who is a teacher, had a hysterectomy. Although she can still produce eggs but she cannot carry a baby. Embryos made from the mother's eggs and the father's sperm were implanted into Miss Horlock's womb.

Wednesday, April 14, 2010

How LPG Regulators Work

Facts about Liquefied Petroleum Gas
Devices which regulate propane fuel flow are called as propane regulators. Since the regulator (also referred to as a vaporizer) is such an important device in any LPG gas system, it is crucial to know how the regulator works.

Propane tank contains a flammable liquid that is usually pumped from a larger tank into smaller one. Since the gas is a liquid under pressure that will become a lighter-than-air substance when being consumed, therefore it can build to a very high pressure. The pressure must then be regulated as it exists the tank otherwise it will rupture hoses or create a substantial explosion. Because of this pressure regulator is used so that the liquid in the tank can be dispensed for a safe and efficient consumption.

Monday, April 12, 2010

How House Foundation is Built - Difference Between Crawl Space and Slab

Building a house starts from its foundation (the most important part). The weight of the house are supported by the footers and foundations, and they are usually made from concrete or masonry. After this is completed, the ground floor can be built from wood or concrete. And when the floor is completed then framing (the process of using wood or metal beams) begins.

Houses today are generally built on a foundation that is either a slab, a crawl space, or a basement.  Basements are more expensive to build, but many people are willing to pay for it since land costs are very high because basements allow for the more living space. Depending where and when a house was built, its foundation can be made of brick, stone, preservative-treated lumber, concrete block, or poured concrete. The most common foundation's material today is concrete.