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TODAY IN HISTORY

    FORTRAN
    September 20, 1954

    The first successful test compilation and execution of a computer program using what became FORTRAN was run by Harlan Herrick at IBM. It took until 1957 to develop into a fully-operational, commercial product. As implied by its name (FORMula TRANslator), Fortran was designed as a high-level language for technical and scientific applications which primarily needed calculation, rather than working with characters. John Backus at IBM supervised the development of the programming language that would allow users to express their problems in commonly understood mathematical formulae. By 1958 the language was expanded to Fortran II, which included subroutines, functions and common blocks, and in 1962 IBM introduced the extended Fortran IV.

    DNA
    September 20, 1952 - U.S.A.

    Alfred Hershey and Martha Chase published a report confirming DNA holds hereditary data. Their experiment used the T2 bacteriophage, which, like other viruses, is just a crystal of DNA and protein. It can reproduce when inside a bacterium such as E. coli. When the new T2 viruses are ready to leave the host E. coli cell (and go infect others), they burst the E. coli cell open, killing it (hence the name "bacteriophage"). Hershey and Chase were seeking an answer to the question, "Is it the viral DNA or viral protein coat (capsid) that is the viral genetic code material which gets injected into the E. coli?" Their results indicated that the viral DNA, not the protein, is its genetic code material.

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  • 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...."

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How To Build Your Own Wine Cellar :

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What does a wine cellar do? Think before you answer, because you need to be absolutely certain of the purpose of a wine cellar before you begin to build a wine cellar of your own.

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What does a wine cellar do? Think before you answer, because you need to be absolutely certain of the purpose of a wine cellar before you begin to build a wine cellar of your own. Increasingly, given the rising number of wine aficionados around the world, a residential wine cellar is gaining ground as a status symbol for both the mature connoisseur as well as the entry-level enthusiast, but its utility extends far beyond that.

Essentially, a wine cellar is a storage space that protects wine from potentially damaging external influences. Because wine is a natural, perishable food product, it is vulnerable to exposure mainly from heat, light, and humidity. However, if stored properly, wines not only retain their quality, but also improve with regard to aroma, flavor, and richness as they mature.

Building your own wine cellar

Before you begin, remember that the ideal wine cellar must provide constant temperature, humidity, and darkness. Add to that well-ventilated and clean surroundings, and your favorite Chardonnay and Cabernet are in good hands. So what are the basic steps to keep in mind?

- The more you research, the better your chances of building the perfect wine cellar. The Internet offers a vast number of sites that offer wine cellar kits. Prices for these kits may range from USD 2000 to about 4000, but that's a slightly conservative estimate, and process can increase depending on the quality of your wine cellar racks. Bottom line: don't scrimp on costs because ultimately, your expensive wines will suffer.

- Depending on the size of your house, you may choose to place your wine cellar below or above ground. Obviously, those with larger houses can accommodate wine cellars above ground, but the basement is the safest bet because it will support the combined weight of the cooler and the racks.

- Your area selected, begin work on insulation. All inner walls must have at least R-11 insulation while outer walls and the ceiling must have at least R-19. If you choose the basement, a vapor barrier with a concrete sealant over it will be adequate for the floor. The vapor barrier “usually a 6mm polyethylene plastic sheet“ should face outward (the "warm" side of the cellar), as opposed to the "cold" side. This is something you have to be careful of: if the sheeting faces inward, damp will set in and damage the walls.

- Next, install a door. The ideal door must be solid, windowless, and insulated “NOT wooden, because they are not adequately insulated. Also ensure that the weather stripping is adequate and the door is airtight.

- A very important step is to place the cooler, which is ideally placed at the back of the area for aesthetic purposes! Typically, the cooler should be placed between crosswise boards about 6 inches down from the ceiling.

- Finally, finish the walls and lights. Use a drywall to finish off the walls and cover up with durable strip paneling. When installing the lights, avoid recessed lights because they make the cellar less than airtight. Aim for simplicity and you'll be ok. But remember, light switches are best placed outside, or else they get in the way of your wine racks.


Source : PLR

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