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Free research papers and essays on topics related to: cellulose

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  • 22399 - 1,303 words
    2/23/99 The Hindenburg Disaster Count Ferdinand Von Zeppelin and his crew operated their first airship nearly one hundred years ago. Airships are big controllable balloons, also known as dirigibles. There are three classes of airships, rigid, nonrigid and semirigid. Rigid airships (zeppelins) use framework in the interior to keep their shape. Semirigid airships are a combination of framework and gas pressure to maintain their shape. Nonrigid airships (blimps) rely solely on air pressure to keep their form. They are all propelled with engines, use rudders and elevator flaps for steering and have a gondola where passengers travel. The pride of the zeppelin works was a rigid airship which was o ...
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  • Aol - 667 words
    Aol Amy Link EIU 4051 Paper 1 The dietary supplement industry is booming. People are striving for a healthier lifestyle, but our vitamins and minerals supplements really needed? The Food and Nutrition Board recommends that those who choose to take these supplements follow the FDA guidelines. There is no scientific proof that these supplements truly help. One of the major supplements we see advertised are products such as Slim Fast and Ensure. Testimonials are used with such products to make people believe they actually work. Do they? Are they healthy? These are two questions that will be answered In order to reduce obesity, most invest in diet and exercise programs. Recently, liquid diets ha ...
    Related: healthy people, congestive heart failure, tufts university, vitamins
  • Biology Molecule - 1,080 words
    Biology Molecule Unit 1 -man is high 50s to 60% water -distribution in body divided into 3 compartments: 1) intracellular - 28 litres 2) intercellular/interstitial fluid - 11 litres - 80% 3) blood plasma - 3 litres - 20% -women contain less water than men -organisms can contain 60-80% water -bacteria have lots of water -fat cells have little -waters properties result from its structure and molecular interactions -water is polar -polar covalent bonds and asymmetrical shape give it opposite charges on opposite sides -electrons spend more time around O giving H a slight positive charge -hydrogen bonds form between the oxygen of one molecule and the hydrogen of another -cohesion: substance being ...
    Related: biology, molecule, nucleic acids, human body, atom
  • Biology Molecule - 1,108 words
    ... covalent bond or a glycosiolic link -bond is angular and forms a spiral called an alpha helix -if it branches, amylopectin is formed -cellulose is a 1-4 linkage of beta glucose -this creates a straight strand and not a helix -these bonds are rigid and require special enzymes (cellulase) to break them -the position of the beta glucose molecules alternates Lipids: -humans rarely eat pure lipids -cell membranes are primarily lipid and lipids can easily enter cells, carrying a foods flavor with them -a diet should have less than 30% fat, 55-65% carbs, and 10-15% protein -lipids are important as a source of energy, insulation (adipose tissue), cushions for the internal organs, as a lubricant, ...
    Related: biology, molecule, heart disease, boiling point, blood
  • Biology Test: Cells - 748 words
    Biology Test: Cells My brother was studying for his biology test. The next morning he was telling me about the dream he had. He said he traveled through a cell. I started to call him insane. My brother have an educational dream? I thought to myself, impossible. My brother started to tell me his crazy dream. The first place he came upon was the cell wall. He was trying to find a way out. He said he started to talk to the cell wall. He asked the cell wall the way out. The cell wall said to him "How should I know? I'm the outer most part of the cell all I do is make cellulose. You might want to ask the cell membrane she is right next to me." He told me he didn't have to walk far to get to the c ...
    Related: biology, cellular respiration, assembly line, nucleus, dream
  • Cannabis Hemp Marijuana - 2,262 words
    Cannabis Hemp. . .Marijuana! Article copied work for work from April 1990 Issue of High Times Magazine pages 37-41 and page 57. "OUR CHALLENGE TO THE WORLD: TRY TO PROVE US WRONG-- If all fossil fuels and their derivatives (coal, oil, natural gas, synthetic fibers and petrochemicals) as well as the deforestation of trees for paper and agriculture (e.g., Brazilian & Indonesian rainforests), are banned from use in order to save the planet, preserve the ozone layer and reverse the greenhouse effect with its global warming trend: Then there is only one known renewable natural resource able to provide all(underlined) of the following goods and essentials such as paper and textiles; meet all of th ...
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  • Cannabis Hemp Marijuana - 2,195 words
    ... lity is strong enough that we must try. Ultimately, the world has no other rational environmental choice but to give up fossil fuel. ENERGY SECURITY At this point, we can tell OPEC goodbye forever. The national balance of payments deficit is cast by the wayside and your personal energy bills can by cut by at least 50%, and perhaps as much as 90% with biomass from hemp and recycled waste. No more elderly or poor people freezing to death or living in misery in the winter. If introduced to Third World nations, hemp biomass could drastically cut our overseas aid and reasons for war, while raising the quality of life there by quantum leaps. The world's economy will/should boom as it never has ...
    Related: cannabis, hemp, marijuana, marijuana prohibition, u.s. government
  • Cannabis Manifesto - 1,904 words
    Cannabis Manifesto Why is it that the one plant that could save our planet from certain environmental destruction is illegal in our country? The Cannabis plant is grown legally for hemp in many countries around the world and yet the government of this country continues to view it as a dangerous plant. The prohibition of the Cannabis plant in this country is one of the greatest injustices in our history. Cannabis has been used by humans for its fibers, oils, and medical qualities for more than 10,000 years. It seems as though Cannabis was created with the basic needs of humans in mind. It can provide us with clothing, building materials, fuel, oils, food, and many other products that are curr ...
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  • Commercial Papermaking - 1,026 words
    Commercial Papermaking Commercial Papermaking Paper in 20th-century civilization, is one of our most important industrial products. Books, magazines, and newspapers are printed on paper. Data from computers are usually printed on paper. Education, government and industry could not operate without printing and writing on paper. Paperboard (used in packaging), and absorbent papers (tissue and towelling) are other widely used paper products. Paper is made from cellulose fibbers, which are found in all plant cell walls. When a mixture of water and fibbers is filtered through a fine screen, the fibbers tangle together to form a sheet of paper. As the wet sheet is dried chemical bonds form between ...
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  • Elephant - 1,701 words
    Elephant The common name is the African Elephant, the scientific name is Loxodonta Africana, the phylum is Vertebrata, the class is Mammalia, the order is Proboscidea, and the family is Elephantidae. The Closest Relatives to the African Elephant are: the Asian Elephant, mammoths, primitive proboscidean (mastodons), sea cows, and hyraxes. Scientists believe that the African Elephant evolved from one of its closest relatives, the Sea Cow. The geographical location and range of the African elephant covers all of central and southern Africa. In Ethiopia there are isolated populations that exist around Lake Chad in Mali and Mauritania. Also in Kenya, Rhodesia, Tanzania, Zambia, Uganda, Zaire, and ...
    Related: elephant, national parks, surface area, south africa, feature
  • Foals: The First Year - 945 words
    Foals: The First Year Foals: The First Year RUSTY MILLER STATEMENT DESCRIBING CAREER GOALS AND RESEARCH INTERESTS MASTERS IN ANIMAL SCIENCE AUGUST 1, 2000 RESEARCH INTERESTS AND BACKGROUND INFORMATION Introduction: The following is a report on my research information on foals nutritional need through there first year of life. This report will also show a research project that I would like to do for my Masters degree I. Nutrition A. Nutritional Requirement 1. Details of general nutrition 2. Requirements B. Other items required for good nutrition 1. Water 2. Energy, Maintenance, & Growth II. Creep Feeding A. Reason for creep feeding foals 1. Why creep feed 2. When to creep feed B. Nutritional ...
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  • Hemorrhoids - 426 words
    Hemorrhoids Hemorrhoids are a digestive disorder that half the population of men and women experience at age fifty. There are two types of hemorrhoids: internal and external. Internal hemorrhoids are found inside the anus or in the lower rectum. External hemorrhoids are found on the tissue surrounding the anal sphincters(the two rings of muscle surrounding the opening to the anus). Hemorrhoids are swollen blood vessels in and around the anus. Hemorrhoids are not a dangerous condition, they only cause pain or discomfort, and tend to go away within a few days. They are tissues that can stretch and swell under pressure. This constant swelling and stretching is the cause for the discomfort of th ...
    Related: hemorrhoids, pregnant women, men and women, application, tissue
  • Hemorrhoids Are A Digestive Disorder That Half The Population Of Men And Women Experience At Age Fifty There Are Two Types Of - 425 words
    Hemorrhoids are a digestive disorder that half the population of men and women experience at age fifty. There are two types of hemorrhoids: internal and external. Internal hemorrhoids are found inside the anus or in the lower rectum. External hemorrhoids are found on the tissue surrounding the anal sphincters(the two rings of muscle surrounding the opening to the anus). Hemorrhoids are swollen blood vessels in and around the anus. Hemorrhoids are not a dangerous condition, they only cause pain or discomfort, and tend to go away within a few days. They are tissues that can stretch and swell under pressure. This constant swelling and stretching is the cause for the discomfort of the patient wi ...
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  • Hindenburg - 1,645 words
    Hindenburg outline Thesis: The Hindenburg has contributed to the history of aircraft as well as investigations. I. (opening paragraph) A. attention getter and relate it to Hindenburg B. thesis statement II. Airship development A. Count von Zeppelins first rigid airships B. Graf Zeppelin III. Paul von Hindenburg: The man that the famous airship was named after. A. childhood summary B. time in German army C. General Hindenburg D. President Hindenburg E. later years IV. The Hindenburg A. specifications B. appearances and travel time C. the explosion V. Explanations of the explosion A. hydrogen theory B. coated inner skin theory C. sabotage theory VI. conclusion A. Hindenburg, king of rigid airs ...
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  • I Am Your Usual Plant Cell There Are Trillions Of My Kind On All Plants, Grass, And Trees My Breed Ranges From Ten To A Hundr - 645 words
    I am your usual plant cell. There are trillions of my kind on all plants, grass, and trees. My breed ranges from ten to a hundred micrometers. I am approximately twenty micrometers since I dwell in grass. My organelles stretch out to one to ten micrometers. If you are asking what I really do and how I live, I am going to answer them in this paper. First off, any cells requires a structure, metabolism, energy, nutrients, waste, and communication. I am more complex than most other cells. Bacteria cell only have a cell wall, cell membrane, and a cytoplasm. Animal cells do not have cell wall, vacuole and cytoplasts. I am a very extraordinary cell indeed. Photosynthesis is the process which I dev ...
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  • Introduction - 1,510 words
    ... is no longer used to three drawbacks associated with it. First is self- absorption. When its beta particle disintegrates, the energy level produced by the breakdown is very low, and difficult to detect. Thus it required a large sample to detect something more than a fraction of the disintegration. Secondly, carbon absorbs rather well. Many samples were contaminated due to the fallout in the air from atomic tests in the 50s. The samples could be cleaned, but not with the certainty needed for accurate readings. Last, the reaction rate of carbon dioxide varied when exposed to magnesium during the procedure, perhaps giving way to a few dates that were clearly too old for the control sample. ...
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  • Mexico - 3,526 words
    ... to import finished automobiles (although they were required to earn US$2.50 in automobile exports for every US$1 spent on imports). In the early 1980s, automobile exports increased as domestic demand fell. Export growth leveled off in the early 1990s as the domestic market recovered. Growth of total vehicle output slowed from 21 percent in 1991 to 9 percent in 1992. In 1994 vehicle production totaled more than 1 million units, of which 850,000 were cars. Production fell by 16 percent between January and November 1995. During those months, exports rose by 37 percent to 700,000 units, while domestic sales fell by 70 percent, to 140,000 units. Textiles, clothing, and footwear together acco ...
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  • Microscope Types - 1,321 words
    ... own as the corpus hemorrhagicum. Cells of the membrane granulosa are transformed into large granulosa lutein cells. Moreover, the cells of the theca interna also increase in size to become theca lutein cells, although they remain smaller than the granulosa lutein cells. Corpus Albicans (D) The corpus albicans is a corpus luteum that is in the process of involution a hyalinization. It becomes fibrotic with few fibroblasts among the intercellular materials. Eventually, the corpus albicans will become scar tissue on the ovarian surface. TESTES Capsule The fibromuscular connective tissue capsule of the testes is known as the tunica albuginea, whose inner vascular layer is the tunica vascul ...
    Related: microscope, scar tissue, stem cells, cell structure, plant
  • Photography Is A Technique Of Producing Permanent Images On Sensitized Surfaces By Means Of The Photochemical Action Of Light - 2,260 words
    ... st placed in a type of projector called an enlarger. Light from the enlarger passes through the negative to a lens, which projects an enlarged or reduced image of the negative onto sensitized printing material. The process allows the photographer to reduce or increase the amount of light falling on particular portions of the printing material. Known as dodging and burning, these techniques render the final print lighter or darker in selected areas. The printing material used in this process is a type of photographic paper similar in composition to that used for film, but much less sensitive to light. After it has been exposed, the print is developed and fixed by a process very similar to ...
    Related: image processing, negative image, permanent, photography, producing, technique
  • Plastic - 829 words
    Plastic Many individuals today have civilized bodies and barbarous souls. Many are blind to the real sights of this world and deaf to its voice. However, no matter how ignorant one may be, he or she cannot disregard the significance of plastics in his or her life. Although they were not recognized as such, many materials used centuries ago for clothing and elements of construction, were natural polymers based on starch and cellulose. Then, ever since Alexander Parkes concocted the first man-made plastic in 1862, people utilized plastics in everythingautomobiles, homes, entertainment, clothes, and even medicine. In addition to its many uses in everyday products, plastics can perform functions ...
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