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TODAY IN HISTORY

    HEART PACEMAKER
    January 30, 1957 - University of Minnesota, U.S.A.

    An external artificial pacemaker with internal heart electrode is first used. To maintain a patient's heartbeat rhythm an electrode was sewn to the wall of the heart and connected through the chest to an external desktop pulse generator. A team of scientists at the University of Minnesota, led by Dr C. Walton Lillehei, made this medical advance. However, such bulky equipment was not a good long-term solution since infection often occurred along the electrode wires, and the device required no interruption in the house electricity. So Dr. Lillehei also initiated research on the use of a small portable external pacemaker for these patients with heart block. This ultimately led to the development of the billion-dollar pacemaker industry.

    DERMABOND
    January 30, 1998 - Food and Drug Administration, U.S.A.

    A new glue, Dermabond, able to replace painful stitches, won the unanimous vote of a medical advisory panel for the Food and Drug Administration, which, in Aug 1998, approved it for marketing in the U.S. It was the first such product in the U.S. The manufacturer, Closure Medical, said Dermabond could seal off certain wounds quickly, without the need for painful shots, With the use of Dermabond, a wound can be kept closed, sterile and flexible while it is healing. A doctor simply presses the cut edges together and paints the glue across the top. The proper medical application takes skill and practice, so the glue isn't meant for home use. This is medical-grade glue that is a chemical cousin of Crazy Glue (which is too toxic to repair cuts) using proprietary cyanoacrylate technology.

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RANDOM QUOTES

  • A Change is Gonna Come
    by Meredith Grey

    "...Change; we don't like it, we fear it, but we can't stop it from coming. We either adapt to change, or we get left behind. It hurts to grow, anybody who tells you it doesn't is lying. But here's the truth: Sometimes the more things change, the more they stay the same. And sometimes, oh, sometimes change is good. Sometimes change is everything...."
  • The Revolution
    by John Adams

    "...The Revolution was effected before the War commenced. The Revolution was in the minds and hearts of the people; a change in their religious sentiments of their duties and obligations. This radical change in the principles, opinions, sentiments, and affections of the people, was the real American Revolution...."

RANDOM FACTS

  • Drug Abuse
    about Facts about Drugs

    Facts about drugs can protect against drug abuse. Legal drugs, such as alcohol and tobacco, kill more people than illegal drugs. Tobacco (smoking cigarettes) kills more people than any other drug. Illegal drugs including heroin, cannabis, ecstasy and amphetamines can have unknown or dangerous ingredients. Mixing drugs, especially with alcohol, can be fatal. Harvard Medical School
    about Eyesight Myth and Fact

    Myth: Staring at a computer screen all day is harmful to the eyes. Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable.

Evaluating A Roof Repair :

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Evaluating A Roofing Replacement:

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Having the opportunity to estimate the amount that it may cost to replace a roof is often a fragile calculation. For a roofing contractor, they often keep in mind various factors directly to ensure about whether or not a straightforward repair needs to be done, or total replacement.

Usually, a roof should last more than two decades. The longevity of the roof is usually dependent on how well it was actually maintained over the years. Climatic conditions can also be a factor.

For example, water can get underneath shingles after which become ice. This may cause leaks, plus a considerable amount of damage. When the sun is especially intense, it can cause shingles to blister.

If your roof does find yourself needing to be replaced, step one will be to have a contractor measure your entire home. They'll measure the time no matter what the roofing system by its height up to the peak. They'll determine the length of time the whole system's ridges are, and decide how much of the cover needs to be replaced.

The entire roofing structure is calculated in squares which equals 100 ft² or 10 feet times 10 feet. For instance, a 1400 ft roof would contain 14 roofing squares. While these square help contractors to figure out their pricing estimate, other reasons, like costs of tearing off the present roof, should also be calculated.

Determining the number of squares on any roof aids the homeowner after they try to figure out what their most suitable choice is in relation to replacements. However, its not all roof is strong enough to accommodate all kinds of roofing material. The weight of an asphalt shingle is considerably less when compared to a concrete tile, and to discover the roofing system may not be devised to handle the extra weight.

The total price in estimating the price of a roof replacement is usually highly depending on the amount that the roofing contractors charge per square. That is why you will need to receive at least 3 - 4 bids from reputable contractors in the community. Further, they'll have the opportunity to try your roof, discover your material preferences, and come up with a reasonable estimate of the volume of a brand new roof shall be cost.

Understand that its not all factors of a roofing replacement can be found up front. For instance, there could be a damage besides the substrate, or a pest problem. However, based upon just how much a contractor charges per square in addition to materials chosen, the homeowner can certainly estimate how much it may cost to swap out the roof.

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