Examples of Chemical Suspensions

Examples of Chemical Suspensions In chemistry, a suspension is a mixture in which the solute particles- whether liquid or solid- do not dissolve. Most of the suspensions you encounter in everyday life consist of solid particles in liquids, but suspensions can also form from two liquids or even from a solid or liquid in a gas. One key way to identify a suspension is that the components typically separate over time. Mixing or shaking needs to occur to form a suspension. Given time, suspensions usually separate on their own. Mercury Shaken in Oil Mercury is a metallic element that is liquid at standard temperature and pressure. Because of its liquid properties, the element can be mixed with oil to produce a suspension. The mercury particles will disperse throughout the oil when the solution is shaken, but the particles will never dissolve. If left to sit, the two liquids will eventually separate. Oil Shaken in Water Water molecules, because of their polarity, are highly attracted to each other. They exhibit a stickiness that can be seen by slowly moving two water droplets toward each other. Oil molecules, on the other hand, are non-polar, or hydrophobic, which prevents them from joining together with water molecules. Oil shaken in water will produce a suspension as the oil particles are momentarily scattered. Left undisturbed, however, the two elements will separate from each other. Dust in Air Dust in the air is an example of a solid-gas suspension. Dust- tiny particles that include pollen, hair, dead skin cells, and other materials- is lifted by wind and ventilation systems and scattered throughout the air, producing a suspension. Because the particles of dust are solid, however, they will eventually return to earth and form a fine layer of sediment on the solid surfaces below. Soot in Air Soot- which takes the form of black smoke- is made up of carbon particles released through the combustion of coal and other carbon-rich energy sources. When it is first released, soot forms a solid-gas suspension in the air. This can be seen in fireplaces, power plants, and vehicles. Like dust in the air, soot eventually settles, blackening chimneys and other surfaces.

Improving Patient Satisfaction through Noise Reduction Activities Essay

Improving Patient Satisfaction through Noise Reduction Activities - Essay Example It increases stress levels, heart rate and risk of cardiac problems, disrupts sleep, produces confusion, affects cognitive function, alters hormone levels, and reduces the confidence of patients on their caregivers (Call, 2007). Shelton (2000) also points out that environmental noise and its possible effects on healing and the rate of recovery of hospitalized patients is a special concern to nurses. At the same time, it has been found that healthcare givers functioning in a noisy environment are vulnerable to irritability, depression, exhaustion and burnout. The purpose of the program or project Improvement of Patient Satisfaction through Noise Reduction Activities is a quality improvement initiative. The purpose of this project is to enhance patient-satisfaction scores by 20% within a period of six months. To achieve this, the project aims at evaluating the impacts of the most common sources of excessive noise within the hospital environment and developing a long-term solution to the problem. The major sources of excessive noise that have been identified in the hospital environment include nursing activities during the day, evening and night and, talking and laughing by visitors, employees, other patients and occasionally, construction.

Outbreak of Aspergillus fumigatus Infection Case Study

Outbreak of Aspergillus fumigatus Infection - Case Study Example The first fatality was that of an 85-year-old female who had been admitted was admitted to the hospital in January 1995 for complications associated with chronic renal failure due to nephrosclerosis. Once the infection was discovered in her lungs, the patient's condition declined rapidly despite antibiotic regimen. A postmortem exam revealed Aspergillus hyphae in both sides of the lungs. The next fatality was that of a 49-year-old female suffering with Wegener granulomatosis who was admitted in February 1995 for cough and fever. Once the infection was discovered in her lungs, the patient's condition declined rapidly even though immunosuppressive treatments were reduced and antituberculotic therapy instituted. A postmortem exam revealed the Aspergillus infection had spread through the lungs to the heart and into the brain. The near-fatality was that of a 65-year-old male admitted in February 1995 with chronic renal failure due to renal vascular disease for severe malnutrition. The infection was never discovered in the patient's septum but his condition improved with liposomal amphotericin therapy. The patient achieved nearly complete regression in 10 weeks. The study shows certain strengths. The investigators admit the findings are inconclusive especially since they did not test air. They warn that hospital construction or renovation work near immunodepressed patients should alert physicians to the possible presence of A. fumigatus. Likewise, the

Aeromodel Guidelines Essay Example for Free

Aeromodel Guidelines Essay Since the dihedral angles vary from model to model, bend the wing upward until the angle is identical to the angle indicated in the assembly instructions for the particular model When gluing the main wing and horizontal stabilizer to the fuselage, make sure that the center line is properly aligned lengthwise with the center of the fuselage. You will find that if you glue the stabilizer onto the fuselage before gluing the main wing onto the fuselage, assembly will be much easier. the Challenge Ahead! Meeting SAEINDIA Student Activities Student Convention Enjoy Learn and align with Curriculum September 2008 Paper Wings Guidelines The importance of gluing the main wing firmly to the fuselage cannot be overemphasized. In order not to leave any gap between the main wing and the body, press down firmly on the center of the main wing about 5 – 6 minutes after gluing. After gluing the main wing and stabilizer onto the fuselage, let it dry thoroughly for 3 – 4 hours. Finishing Touches To make a truly high performance plane, it is important that the cross section of the main wing be curved in such a fashion as to minimize drag, or air resistance, and maximize lift, the upward draft of air. To make the proper curve, bend the main wing slightly in the manner shown in the figure (this is called cambering the wing). This shape is necessary for top performance. Use the figure on the right as a guide to give an appropriate camber to the main wing. The maximum camber point should be between a distance of 30% and 40% from the front edge of the main wing. Only the main wing is to be cambered. The stabilizer should be left flat. Placing the dihedral angle gauge on the middle of the wing, once again make sure that the dihedral angle is the required one. To test to see if the center of gravity is properly aligned or not, take an open pair of scissors or tweezers and balance the plain on the two tips at the mark as shown in the figure. All the planes in the Heritage series are designed to have the center of gravity located at the mark. In some cases, however, due to an excess of glue or lacquer on the plane, your may find that the center of gravity is not properly located at the mark. When this the Challenge Ahead! Meeting SAEINDIA Student Activities SAE Page 6 of 31 SAEINDIA SAE Student Convention Enjoy Learn and align with Curriculum September 2008 Paper Wings Guidelines Happens, it becomes necessary to add some additional weight. To do so, attach a small scrap of the remaining white wings paper lightly to either side of the plane nose or the rear of the fuselage and secure it temporarily with a small amount of glue. Vary the position or size of the attached paper until the center of gravity is located properly and then glue the attached paper firmly to the fuselage. The center of gravity should be located within 1 mm (1/24†) of the mark. If your paper plane is coated with lacquer, it will become water resistant. Therefore when it lands on wet grass, if you quickly wipe the water off with a soft cloth, you are ready for another flight for preserving the beauty of the white paper, clear lacquer is good, but if your want your plane to be a different colour, your can use colored lacquer. It doesn’t matter whether you spray it on or paint it on with a brush, but in order to keep the plane light and preserve its balance and center of gravity, be careful to coat the plane as thinly and evenly as possible. 2. Flight Instructions One of the secrets of flying a paper plane well is to view the plane closely from ahead on position and straighter out all warps, bends or twists with your fingers. Inspect your plane thoroughly from the front: (1) Is the fuselage bent? (2) Are both the right and left main wings straight, perfectly matched and are both inclined at the same angle? (3) Is the horizontal stabilizer warped or bent? (4) Is the vertical stabilizer warped or bent? the Challenge Ahead!

The Atkins Diet Versus Low-Fat Diets Essay -- Health Nutrition Diet Ex

The Atkins Diet Versus Low-Fat Diets   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  The Atkins diet and the USDA recommended low-fat diet seem to be on the opposite sides of the diet spectrum. These two diets have many differences and no apparent similarities, other than the goal of losing weight. These differences include the results of the diets, possible side effects, and the theories behind the diets. The Atkins diet recommends reducing carbohydrate intake in order to lose weight. Conversely, the low-fat diet recommends reducing caloric intake to lose weight; especially the calories from fat. The Atkins diet and the low- fat diet differ in the methods behind their diets, the results that participants experience while on the diet and the possible side effects linked to the diet.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  The methods behind the Atkins diet and the low-fat diet differ extensively. The Atkins diet is based on the theory that a reduction in carbohydrate intake will lower the dieter’s body weight. The recommended amount of carbohydrates for this diet is 20 grams for the first phase of the diet. During the second stage of the diet, participants are encouraged to increase their carbohydrate intake by 5 grams every week until their weight loss has stopped. Usually the intake of carbohydrates remains under 30 grams a day for the duration of the diet. The rest of the diet consists of an unlimited amount of protein and fat. On the other hand, the low-fat diet restricts caloric intake about 2,000 calories (depending on your age, sex, and height) in order to lose weight. Within the dieter’s restricted amount of calories; 30% of the overall calories can be from fat, 10% from protein, and 60 % from carbohydrates. On a 2,000 calorie diet, this wo... ...n negative side effects due to the lack of fiber through fruits, vegetables and grains; whereas those on low-fat diets have shown the positive side effect of a lowered risk of heart disease.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  The Atkins diet and the low-fat diet show differences in their method of weight loss, the short-term and long-term results of their diet and the side effects that are caused by the method of the diet. The Atkins diet emphasizes the reduction of carbohydrates from the diet in order to lose weight; whereas the low-fat diet emphasizes the reduction of calories, especially those high in fat. The Atkins method seems to cause more weight loss than the low-fat diet within the first 3-6 months but shows similar loss after 12 months. But this increased weight loss early in the diet is accompanied by more negative side effects than the low- fat diet.

John Marshall Essay

â€Å"Its is emphatically, the province and duty of the judicial department, to say what the law is.† (Ducat, Craig Constitutional Interpretation p. 10) These seventeen words written two hundred years ago made the highest court in the United States supreme, and making it so, Chief Justice John Marshall’s words in that sentence continue to make an impact on every Supreme Court case thereafter. Justice Marshall laid the basic foundations to protect the Federal system that was established by the Constitution. In Marbury v. Madison, McCulloch v. Maryland, and Gibbons v. Ogden the Supreme Court maintained the United States as a federal state. Marbury v Madison was the influential case that the Supreme Court cites as a precedent when employing judicial review. It left the power to be rested on the judicial branch when determining to uphold either the law or the Constitution. By establishing the right to judicial review, Marshall, with the support of the legislative and executive branches, made all cases before the courts subservient to the U.S. Constitution. Cases that have been heard after Marbury v. Madison, that come into question, must be interpreted through the Constitution. Uniformity of all states of the Union were established when Marshall and the Supreme Court ruled in McCulloch v. Maryland. Although the Constitution gave powers to the states under the Tenth Amendment, Marshall implemented the powers of the Federal government by exercising Article 1 Section 8 Clause 18 (necessary and proper clause) and Article 6 Section 2 (supremacy clause). Marshall explained that the Constitution gave the federal government the power to incorporate a bank if it deemed it necessary and proper not for the powers of Congress, but necessary and proper for the powers granted to Congress by the Constitution. Marshall also outlined the rights of the states by enacting Article 6 in his decision. He stated that the supremacy clause prohibited the states from having the power to tax, which would then involve the states power to destroy the powers of the Constitution to create. Gibbons v. Ogden expanded the powers of the Federal government aforementioned in the previous two influential cases. This case defined the Commerce Clause found in Article 1 Section 8 Clause 3. In his genius, Marshall defined commerce not only as an exchange of commodities, but also the means by which interstate and foreign intercourse those commodities travel. By giving the Federal government control over commerce through interpretation of the Constitution, Marshall preserved the prosperity of the country as an economic Union conducting business under national, not state, control. Chief Justice John Marshall’s decisions in all three of the cases explained previously depict the evolution of the Supreme Court. Marbury v. Madison separated the powers of the three branches of governments, McCulloch v. Maryland separated and defined the powers of the Federal and state governments, and Gibbons V. Ogden separated the commerce powers of the Federal and state governments. Marshall decided each case based on the foundations established by the U.S. Constitution, and in each of his decisions, he preserved the integrity of the Framers intentions of the United States as a Federal state.

Jerry Trinidad . Professor Tuyay . Asian-American History .

Jerry Trinidad Professor Tuyay Asian-American History April 1, 2017 Angel Island and Ellis Island The United States was founded on the principle that all men are created equal, but during an immigration boom in the late 1890s and early 1900s, Asians and Europeans faced discrimination and violence because of their difference in language, appearance, and religion. People came to America from all over the world to experience the wealth and prosperity that was associated with this great country, but certain ethnicities were excluded from the hope and freedom they were promised by the forefathers. When coming through California, Asians faced with hardships and trials that caused them to return to their country and sometimes to end†¦show more content†¦Plans were created for a new building and the design was based on French Renaissance Revival architecture. On December 17, 1900, the new fireproof building was opened the facility could barely handle the quantity of immigrants arriving. When arriving at the station, immigrants phys ical health was evaluated by doctors at the top of the large flight of stairs coming into the main building of the immigration station then the doctors would thoroughly check the immigrants for sickness and mental problems. If the subject was sick or had a disease, mark them with chalk but some just erased the mark to go directly to the immigration line. The ill were sent to a hospital until they recovered; and if they had problems with their background status, they were held in the detention center until they could prove they were suitable to enter the country. Many families were separated because of they were detained for further evaluation or were sent to the opposite city. It is estimated that almost 40% of all US citizens can trace at least one of their ancestors back to Ellis Island. The Europeans immigrating to the USA came for similar reasons of that of their Asian counterparts, such as fleeing from war, poverty, and religious persecution. 5,000 to 10,000 people were proces sed through the immigration station every day. Although the immigrants appeared similar to those born in the US, they still faced discrimination for their