What is asbestos? Asbestos is the name given to a group of minerals that occur naturally in the environment as bundles of fibers that can be separated into thin threads and robust. These fibers are resistant to heat and fire, chemicals, do not conduct electricity. For these reasons, asbestos was used extensively in many industries. Chemically, the asbestos mineral silicate compounds, which means they contain silicon and oxygen atoms in the molecular structure. Asbestos minerals are divided into two main groups: serpentine asbestos asbestos wamvibol. Serpentine asbestos mineral includes chrysotile, which have long curly and fiber that can be woven. Chrysotile is the model that has been widely used in commercial applications. Amphibole asbestos minerals include actinolite, tremolite, anthophyllite, crocidolite amosite. Amphibole fibres, such as straight stitch which is more fragile than that serpentine asbestos, more limited in its ability to be fabricated. How to use asbestos? …show more content…
Use greatly increased during World War II (3, 4). Since then, asbestos was used in many industries. For example, the building and construction industries have been used to strengthen cement and plastics, as well as insulation and roofing and steadfast and sound absorption. Shipbuilding industry used asbestos to insulate boilers, steam pipes and hot water pipes. The auto industry uses asbestos in car brakes and clutch pads. Asbestos is also used in the ceiling and floor tiles, paints and coatings, adhesives and plastics. In addition, asbestos was found in the garden products containing vermiculite and some pens containing
Exploring of Asbestos Asbestos (Greek a-, "not"; sbestos, "extinguishable") is a group of fibrous metamorphic minerals. The name is derived for its historical use in lamp wicks; the resistance of asbestos to fire has long been exploited for a variety of purposes. It was used in fabrics such as Egyptian burial cloths and Charlemagne's tablecloth, which, according to legend, he threw in a fire to clean. When asbestos is used for its resistance to fire or heat, the fibres are typically mixed with cement or woven into fabric or mats. It was used in brake shoes and gaskets for its heat resistance, on electric oven and hotplate wiring for its electrical insulation at elevated temperature, and in buildings for its flame-retardant and insulating properties, its tensile strength, flexibility, and resistance to chemicals.
Arsenic is element 33 on the periodic table and is in Group 15. Arsenic is obviously an extremely poisonous element; however, some people have found arsenic to have a restorative effect on them. Chemically, arsenic is a metalloid. Two common forms of arsenic are gray and yellow. (see Figure 1-A) Element 33 has an atomic weight of 74.9216 and the chemical symbol of As. It boils at 613ºC, melts at 817ºC, and has a density of 5.72. (see Figure 2-A) The element has been known for centuries and can be easily obtained from ores such as arsenopyrite (FeAsS), realgar (As2S2), orpiment (As2S3), and arsenic trioxide (As2O3). There are many uses for arsenic. Among them is in the manufacturing of glass to eliminate the air bubbles and the green color caused by contaminated iron compounds. Arsenic is also added to materials such as lead and copper alloys to increase the strength and better the corrosion resistance. Although it is well known that arsenic is often used in tales (both true and otherwise) as a killing agent, arsenic has been used as a curative as well. Before penicillin was introduced, arsenic played a significant role in the treatment of syphilis. Other good uses for element 33 are as insecticides and semiconductors. Gallium arsenide (GaAs) is a known semiconductor that is also used as a laser material. A good test for the detection of arsenic is the Marsh test, invented by James Marsh, an English chemist.
We live in a world where being medicated has become a societal norm. Modern health care practices have set the stage for the proliferation of direct-to-consumer advertising (DTCA) of prescription drugs by pharmaceutical manufacturers. Some of these practices include the emergence of managed care organizations (MCOs), the legalization of DTCA of prescription drugs, the emergence of the Internet as an alternative promotional channel, the increased desire by patients to become more involved in their own health care decisions, the disillusionment with traditional medicine, and the rise of ‘alternative’ medicine, to name a few. There is an ongoing debate as to the ultimate harm or benefit of this relatively recent practice of pharmaceutical manufacturers to direct their promotional efforts away from the physician and towards the consumer.
One of the common diseases in the respiratory system that many people around the world face is emphysema or also known as chronic obstructive pulmonary disease (COPD). It is a chronic lung condition where the alveoli or air sacs may be damaged or enlarged resulting in short of breath (Mayo Clinic, 2011). If emphysema is left untreated, it will worsen causing the sphere shaped air sacs to come together making holes and reduce the surface area of the lungs and the amount of oxygen that travels through the bloodstream, blocking the airways of the lungs (Karriem- Norwood, 2012). The most common ways a patient can get emphysema are by cigarette smoking or being exposed to chemicals, dust or air pollutants for a long period of time. Common physical exams reveal a temperature of 100.8 Fahrenheit, 104 beats per minute, a blood pressure of 146/92, and a respiratory rate of 36 breaths per min (Karriem- Norwood, 2012). (see appendix A.1,A.2, A.3, A.4 for complete proof.)
Concretions are hard compact accumulations of mineral matter and are found inside sedimentary rocks. Some examples of this are Sandstone and in some weathered volcanic rock. Concretions come in many different shapes and the most common of the shapes is spherical or disk shaped. Concretions are the most varied-shaped rocks of the sedimentary world. The way concretions come to be is the mineral matter concentrates around the nucleus of a host rock. The nucleus is often organic such as a tooth or leaf or shell or fossil. As the mineral matter concentrates around the nucleus it forms harder zones known as nodules.
Radiation has always been in everyday life even before Roentgen discovered x-ray. The mountains give off natural radiation, other forms of radiation are coal burning power plants, x-rays from a TV, and an airplane ride. The average dose from background radiation is about 360 mrem every year. There are two types of radiation, nonionizing and ionizing radiation. Examples of nonionizing radiation are microwaves and radio waves broadcasting. Ionizing radiation refers to gamma and x-rays. Ionizing radiation means that the rays are able to remove an electron from the atom then ions can be formed. The ions can cause damage when reacting with other atoms. Cells are able to be repaired if low dose are received. However, if cells get a high dose, the cells will be damaged or possibly die. If the cell is damaged permanently then it is referred to as a mutated cell.
The leading cause of death in America is lung cancer. Lung cancer is ranked top 10 fatal cancers in the United States. There are many types of ways to get lung cancer. There is radon gas it occurs outdoors naturally. Then there is second hand smoke that comes from other people smoking. People are even getting lung cancer from cancer causing agents, this happens from carcinogens. You can also get it from air pollution indoors and outdoors. Also there are gene-mutations that form cancer causing cells. Then there is the one everyone blamed lung cancer is smoking.
...y comes from the Balcones Escarpment. Larger crushed rock from this area is used as a base layer for roads and buildings, to protect them from the shifting soils. Very pure limestone is procesed into lime, wich is then used in a wide variety of agricultural, industrial, and construction activities. Other rocks crushed for building materials include basalt, used for railroad track beds, and marble, used for fancy terrazzo floors.
The biological effects of radiation play a key role in today’s society and it is something that all species have to deal with on a day-to-day basis. Throughout time, this field of study has grown and has become one of the most prominent fields of science. Radiation is something that we as a human race will never be able to escape. It is naturally present and has been since planet Earth was formed. In the mid 19th Century, there were two famous scientists that are known for their exquisite contributions to the study of radioactivity. Pierre and Marie Curie were a husband-wife duo that both studied at the Sorbonne. While at Sorbonne, they studied the properties of thorium and uranium and soon stumbled upon and discovered the element polonium. Pierre then decided to study magnetism at high temperatures. Marie proceeded to study in both chemistry and physics and received Nobel Awards in both fields. She is the only person in history to do this. The “curie” is a unit of measure that scientists use to this day in radiation studies. These two were not...
The topic that I will be focusing on for this assignment is on the screening of lung cancer, since this is one of the most controversial debates all across the world. The significance of this topic is that when it comes to lung cancer screening, many individuals may or may not abide by it. There are many reasons to why individuals may not want to have their screening done for lung cancer. The top two reasons are that the screening itself is expensive and secondly, the results that they get from the screening may not be accurate. Imagine, if the results came up as a positive, for the ones who really do not have lung cancer, the amount of pain, time and money that they have put into the curing of lung cancer, is painful. At the same, time it is not fair for them to go through this much, when they actually do not have lung cancer. In this paper, I will discuss how lung cancer screening is a controversial issue and why it impacts us as a society and what problems that the family members, friends and medical doctors have to face if something does goes wrong.. Here is a portion of my essay that will appear on the final copy of my essay.
BACKGROUND Types of Silica Crystalline silica may be of several distinct types. Quartz, a form of silica and the most common mineral in the earth's crust, is associated with many types of rock. Other types of silica include cristobalite and tridymite. Potential for Exposure During Construction Concrete and masonry products contain silica, sand and rock containing silica. Since these products are primary materials for construction, construction workers may be easily exposed to respirable crystalline silica during activities such as the following: Chipping, hammering, and drilling of rock Crushing, loading, hauling, and dumping of rock   high dust concentrations.
Asbestosis is caused by an inhalation of asbestos fibers that become coated by a protein that is high in iron content. The fibers that are formed are considered asbestos bodies (Crowley, 2013). A patient’s sputum can reveal the asbestos bodies that have been inhaled through cotton like fibers, coal dust, and fungal spores depending on a person’s previous environmental exposure (Crowley, 2013). My patient has previously been exposed to asbestos in the past. Symptoms of asbestosis do not appear until much later on in a person’s life after they have been exposed to asbestos fibers (LeMone, Burkey, Bauldoff, & Gubrud, 2015).
In 2007, the world consumed 5.3 billion tons of coal, 31.1 billion tons of oil, 2.92 trillion cubic meters of natural gas, and 65,000 tons of uranium. All of these energy needs could have been met with only 6,600 tons of thorium, an abundant, slightly radioactive element found in the Earth’s crust.
Radiation is a frightening concept. It has lead to many an untimely death in the past 70 years, ranging from victims of atomic bombs in Japan to physiologists experimenting without taking proper safety precautions. The most dangerous form of radiation can be devastating to the body, weakening or eliminating the immune system and tearing the very DNA in one’s cells apart. This form is referred to as ionizing radiation, and even the least harmful potencies - such as x-rays and UV light - can increase the risk of cancer and other health problems. It has enough energy to knock electrons out of atoms in a process called ionization.
Bone cancer is classified into primary bone cancer & secondary bone cancer. Basically, Primary bone cancer starts in the bone; then the cancer initially forms in the cells of the bone; while the secondary cancer starts elsewhere in the body and gets spread to the bone.