... who do require oxygen to live are considered aerobes. The bacteria who don’t use oxygen to live are known as anaerobes. The shape of specific bacteria provides for the next step in the identification process. Spherical bacteria are called cocci; the bacteria that have a rodlike shape are known as bacilli; corkscrew shaped bacteria are spirilla; and filamentous is the term for bacteria with a threadlike appearance. Hans Christian Joachim Gram, a Danish microbiologist, developed a method for distinguishing bacteria by their different reaction to a stain. The process of applying Gram’s stain is as follows: the bacteria are stained with a violet dye and t ...
... be more severe in some areas than in others. Catastrophic generally occur at latitudes of about 15°-20° and in areas bordering the permanently arid regions of the world. Lands that are permanent arid is a characteristic of those areas where warm, tropical air masses, in descending to earth, become hotter and drier. When a poleward shift in the west ocurrs, the high-pressure, anticyclonic conditions of the permanently arid regions hit each other on areas that are normally used to seasonally wet low-pressure weather and a drought follows. A southward shift in the western winds causes the most severe drought of the 20th century, the one that struck the African regi ...
... be aimed at three specific, vital areas: The creation of an aquatic medium, a terrestrial plateau and celestial ether that is conducive to human respiration. There are two planets from which to choose: Mars and Venus. Martyn J. Fogg authored what is regarded as a textbook of the future called Terraforming: Engineering Planetary Environments. I have chosen Fogg's book as my second primary source because it is the only book of its kind that addresses the question of terraforming in a non- science fiction context. The successful terraformation of a planet requires the synthetic development of a biosphere. The problems that present themselves are indigenous to the Geo ...
... look at, and was just passing the time til then, and I decided to look at some deep-sky objects in Sagittarius. When I turned to M70, I saw a fuzzy object in the same field, and almost immediately suspected a comet, since I had been looking at M70 last month, and *knew* there wasn't any other objects there." Thomas Bopp explains his story like this, "On the night of July 22, 1995 some friends and I headed out into the desert for a dark of the moon observing session. The site, which is west of Stanfield, AZ and a few mile south of Interstate 8 is about 90 miles southwest from my home. My friend Jim Stevens had brought his 17-1/2" Dobsonian. We started the evening ...
... in many parts of the world. The abacus consists of beads strung on rows of wires suspended within a rectangular frame. A common form has a piece of wood dividing the beads, with five beads on one side, and two on the other side of the wood on each wire. Calculating Machines and their Inventors: Through the centuries, several mathematical geniuses invented machinesto aid them in their calculations. The machines were never widely used and generally had no direct path to the later development of electronic computers. Example: Pascal: Blaise Pascal (1623-1662) a French matematician, invented the first mechanical adding machine at age 19 in 1642. He becam ...
... and start to divide, grow and spread in an uncontolled manner. At first the growth of the cancer occurs very slowly and is usually limited within the prostate gland. Later on in the course of the illness, the prostate gland cells can spread around the body, particulary to the bones where they can paues pain and disability. Estimates show that the cancer may have been growing in some men for up to 10 yearsbefore it causes symptoms and is diagnosed. Some men develop symptoms whereas others do not. In those who that do, the following symptoms are commonly found: BATHROOM TROUBLES: -Need to urinate frequently, especially at night -Sudden, i ...
... Some people have been known to be as young as 13years of age. Most colon polyps are benign but some become cancerous. Most FAP patients develop cancer by the age of 39. Another form of hereditary cancer is Hereditary Non-Polyposis (HNPCC). HNPCC accounts for five to ten percent of all cases. HNPCC develops also at a young age but not as young as FAP patients. The actual cancer appears in the persons 40's. HNPCC is known as a "fast growing" form of cancer. Along with colon cancer HNPCC patients are also at a much higher risk for other forms of cancer. Page 2 The causative factors of these cancers are not known at this time. Many doctors, scientists, and me ...
... by a large fan to flow over what they are testing (plane, missiles, rockets, etc.)or a model of it. The object in the wind tunnel is fixed and placed in the test section of the tunnel and instruments are placed on the model to record the aerodynamic forces acting on the model. Types of Wind Tunnels There are four basic types of wind tunnels. Which are low subsonic, transonic, supersonic, and hypersonic. The wind tunnels are classified by the amount of speed they can produce. The subsonic has a speed lower then the speed of sound. The transonic has a speed which is about equal to the speed of sound (Mach 1 760 miles per hour at sea level). . The supersonic (Ma ...
... account for the severe impairment suffered by Alzheimer's victims. Neurofibrillary Tangles are also found in the brains of Alzheimer's victims. They are found within the cell bodies of nerve cells in the cerebral cortex, and take on the structure of a paired helix. Other diseases that have "paired helixes" include Parkinson's disease, Down's syndrome, and Dementia Pugilistica. Scientists are not sure how the paired helixes are related in these very different diseases. Neuritic Plaques are patches of clumped material lying outside the bodies of nerve cells in the brain. They are mainly found in the cerebral cortex, but have also been seen in other areas of the brain. ...
... had an effect on memory. Memory was better for words if they have been categorized and for pictures if they have been named. Experiment 3 showed the same results as the previous two experiments. The fourth experiment, with the introduction of less common objects, subjects could name the words faster than generating a category name for the words. Naming pictures are prone to interference when incongruent words are presented simultaneously. Word naming is not as much influenced by distracting pictures. Pictures and words differ in the amount of information to be filtered out, to get the correct response. The design of this experiment is a within subj ...
