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    POLYPROPYLENE
    November 12, 1999 - Bartlesville, Oklahoma, U.S.A.

    In Bartlesville, Oklahoma, a plaque was placed on the site of the laboratory where the polymer polypropylene was invented, designating it a National Historic Chemical Landmark by the American Chemical Society. The first commercially successful use of the new material was in the Hula Hoop®. In 1951, J. Paul Hogan and Robert L. Banks, research chemists working for Phillips Petroleum Company, discovered the polymer unexpectedly during experiments with catalysts while trying to convert the natural gas components ethylene and propylene into compounds useful for gasoline. Later, they also developed a new catalytic process for making high-density polyethylene. Phillips soon invested in new plastic manufacturing plants.

    PITOT TUBE
    November 12, 1732 - Academy of Sciences, Paris

    Henri Pitot read a paper to the Royal Academy of Sciences in Paris about an instrument he had invented to measure the flow velocity at different depths of water in the River Seine. It had a scale and two open vertical glass tubes on a wood frame. The lower end of one pointed down, the other bent at 90 facing the flow. The belief of the time was that flow velocity at a given depth was proportional to the mass above it, meaning increasing velocity at greater depth. Recording the difference in liquid levels in the two tubes, he showed the opposite was true. Henri Darcy improved the design, with the support of Henri Bazin. Today, the Pitot tube has an important application in aerodynamics for the measurement of the airspeed of aircraft.

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    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.

Bodybuilding without supliments :

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ARTICLE INFORMATION :

Bodybuilding supplements are optional for anyone who wishes to obtain a body packed with muscles. Bodybuilding supplements is a definite classification of "œnutritional supplements" which aims to aid the increase of muscle mass. Some examples of bodybuilding supplements are protein, multi-vitamin, ZMA, and growth hormone.

ARTICLE CONTENT :

Bodybuilding supplements are optional for anyone who wishes to obtain a body packed with muscles. Bodybuilding supplements is a definite classification of "nutritional supplements" which aims to aid the increase of muscle mass. Some examples of bodybuilding supplements are protein, multi-vitamin, ZMA, and growth hormone.
There are some who contradicts the use of bodybuilding supplements. Others are encouraging bodybuilders to try the natural way of increasing muscle mass without the use of a supplement.

1. Proper diet.

Proper diet and nourishment is needed for you to obtain a thriving bodybuilding plan. It will serve no good to you and your body if you tire yourself with rigorous training yet hunger yourself from nutrients which your body needs.

Maintaining a diet when you are on a bodybuilding program is essential. Again, you do not need to go on a "œhunger-strike." What you need to do is eat smaller yet frequent meals/snacks all through the day. It is also important to regulate the amount of food you will be consuming. Some bodybuilding experts recommend that 40% of your meal should be composed of carbohydrates, the other 40% is to be set aside for protein and the remaining 20% are for "good fats."
2. Exercise.

Exercise is the most ultimate task you need to undergo if you intend to have a bodybuilder's physique.

You are not to concentrate in one type of exercise. There are several types of bodybuilding exercises that you need to undertake so that you will gain lean muscle mass. Some recommended exercises to undertake are:

- Isolation exercise – this type of exercise involves only one “joint movement. "A Bicep curl is an example of this type of exercise.
- Multi-joint exercise“ this type of exercise is believed to increase muscle mass as well as heighten fat reduction.
- Free-weight exercise – this type of exercise lets your body move through your exercising space.

The type of exercises you should undertake will sometimes depend on your body type. It is best to consult a bodybuilding trainer concerning what exercises to do. If you have been given "exercises assignment" then you need to:

- Obtain a training journal. By doing so, you will be able to track your development.
- Provide "workout intensity" every time you perform training.
- Keep up with your schedule. It is recommended that you should not miss any "training day." Missing a day on bodybuilding will cost you a lot.

3. Rest.

Who said that you need to do bodybuilding training twenty-four hours a day? Even though you workout that much, you will never achieve a good bodybuilder's physique without obtaining rest.

Rest is an essential part of bodybuilding which is overlooked by many. Studies show that during sleep, muscle growth happens. It is also a time to recover all the lost-energy during workouts. It is best to follow the recommended sleep time which is at least eight hours a day.

It is also important to do necessary steps to get a good night sleep such as:

- Prepare your sleeping area the way you are comfortable with. However, it is best if the room is dim and cool.
- If there are unpreventable noises in your environment, it is best to use earplugs.
- Cut on substances with caffeine.
- Inform your housemates the need for you to get a good sleep.

With the above-mentioned factors equipped with discipline and perseverance, you will be able to achieve a bodybuilder's physique without even using supplements.

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  • Bodybuilding
    Body building Supplements are optional for anyone who wishes to obtain a body packed with muscles.

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