... structure and functional unit for all living organisms. A cell can be a wide range of shapes and sizes, although most cells are microscopic. Inside a cell membrane, a nucleus can be seen. The nucleus is the control center of the cell. Between the nucleus and the membrane, there is a polysaccharide matrix called the cytoplasm, where organelles can be found. The organelles are attached to a framework. The cell’s cytoskeleton. Every living cell has the ability to detect signals from it’s environment. The signals are usually in the form of chemical molecules, that the cell has learned to recognize. The cell decodes these molecules into messages, and acts ...
... a series of waves most commonly created by violent movement of the sea floor. A tsunami is a towering ocean wave generated by tectonic displacements such as undersea earthquakes, landslides, cosmic collisions, or volcanic eruptions. There is a common misconception that a tsunami is a tidal wave. Although the impact of a tsunami on a coastline may change depending upon the tidal level at the time when one occurs, tsunami waves are unrelated to tides. Instead, tides are the product of imbalanced gravitational forces coming from the planets, the Sun, and most of all, the Moon. In the open, the water level may rise and fall several feet as a tsunami passes by. How ...
... Major depression often lasts for months. Left untreated, it tends to reoccur. Each reoccurrence tends to last longer and is more debilitating than the one before. Chronic depression is a low grade, long-term depression that can go on for years. Some people have had it most of their lives. Long term, low-grade depression is also known as dysthymia. Dys, meaning disorder, and thymia meaning mood. Dysthmia is then a disorder of ones mood. The last type is manic depression. The lows of this depression can alter with days or weeks of maniaextreme feelings, unreasonable thoughts, and inappropriate, sometimes destructive behavior. The manic-depressive person f ...
... discussion: 1) Why should sociologists concern themselves with the Internet?; 2) What are the various Internet technologies available to sociologists?, and; 3) How can faculty begin to integrate these technologies into their classrooms and research. Key words: teaching sociology, information technology, on-line teaching Introduction Information technology is quickly becoming the hub of efforts within the higher education community. Indeed, colleges and universities have demonstrated a fierce rush to amass technological tools, and are only now addressing the possibilities for adapting them to academic use. Ideally, new networked information technologies, ...
... other shorted conditions occurred. Electrical shorts in the fan circuit ignited the wire insulation, causing temperature and pressure to increase within cryogenic oxygen tank 2. When pressure reached the cryogenic oxygen tank 2 relief valve full-flow conditions of 1008 psi, the pressure began decreasing for about 9 seconds, at which time the relief valve probably reseated, causing the pressure to rise again momentarily. About a quarter of a second later, a vibration disturbance was noted on the command module accelerometers. The next series of events occurred within a fraction of a second between the accelerometer disturbances and the data loss. A tank li ...
... providing coverage for the billion dollar industry of alternative treatments, insurance companies are keeping the cost of the premiums down but at the same time not allowing their customers to use complementary treatments such as chiropractic to prevent or cure illness. The more rigid and restrictive the policy provisos, the more assurance for the companies that they will maximize their bottom lines. Therefore, patients of alternative therapies as well as doctors must show that such unconventional treatment provides relief and prevention of illness. “The total projected out-of- pocket expenditure for unconventional therapy plus supplements(such as diet ...
... had twenty deaths, and nearly 6,000 residents, or 40% of the population, suffered respiratory problems (Edelson 25, 26). New York experienced several killer smogs, which in a later analysis attributed, from the usually severe pollution, 58 deaths (Edelson 26). Not only in the United States are health problems caused by air pollution showing up, but they are also showing up in other parts of the world, like Europe. In 1930, in Belgium's Meuse River valley, a major industrial region, where the primary fuel was coal reported sixty deaths, and about 6,000 residents of the valley became ill with breathing problems and respiratory infections (Edelson 25). In Dece ...
... When Dr. Ian Wilmut, a 52-year-old embryologist at the Roslin Institute in Edinburgh announced on that he had replaced the genetic material of sheep's egg with the DNA from an adult sheep, and created a lamb (Dolly), the topic of cloning "created" many new questions of its own. None were as controversial as: Will they apply this to humans as well? According to Dr. Wilmut, the answer was "there is no reason in principle why you couldn't do it"(clone humans), but he added, "All of us would find that offensive."(Wilmut as quoted by NYTimes, Daniel Callahan, 02/26/97). From an individualistic viewpoint, those in favor of cloning human beings, do not ...
... "A wild flower is a plant that has always been it's own without any human intervention." Native plants "without assistance from a gardener in the area where they originated. Although all native plants are wild, not all wildflowers are natives" (Loewer 6). Where did the non-native flowers come from and how did they get here? "Probably the largest number of plants accidentally introduced in this country arrived in ships' ballast. Because the early merchant ships that sailed from Europe were empty of goods on the trip over, their hulls were loaded with dirt so that they would float properly. When they arrived in America, the dirt was removed and left onshor ...
... dies. The other kind is called bipolar or manic depressive illness, it is recognized by alternating depressed and manic episodes. This is an actual brain disfunction. In the major depression or the depressed phase of bipolar illness, a depressed mood predominates, even though the patient may not be aware of feeling sad. Typically, he or she loses all interest in activities. Symptoms include sleep disturbances, not able to concentrate or to make decisions, loss of appetite or greatly increased appetite, slowed thinking and decreased energy feelings of worthlessness, guilt, hopelessness, diminished sexual interest, and recurrent thoughts of suicide and death, somet ...
