Your search returned over 400 essays for "diameter"
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Determining The Ratio Of Circumference To Diameter Of A Circle

- Determining the Ratio of Circumference to Diameter of a Circle In determining the ratio of the circumference to the diameter I began by measuring the diameter of one of the si objects which contained circles, then using a string, I wrapped the string around the circle and compared the length of the string, which measured the circumference, to a meter stick. With this method I measured all of the six circles. After I had this data, I went back and rechecked the circumference with a tape measure, which allowed me to make a more accurate measure of the objects circumferences by taking away some of the error that mymethod of using a string created....   [tags: essays research papers]

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The Effect of the Height of a Crater on Its Diameter

- The Effect of the Height of a Crater on Its Diameter Introduction ============ A crater is formed when a meteor for outer space strikes the lunar surface. The force of the impact obliterates the meteorite and displaces part of the moons surface, pushing the edges surrounding rock. At the same time, more displaced material shoots outward from the crater. I will simulate this in the classroom by using a margarine tub full of sand and using different heights to represent the distance it travelled....   [tags: Papers]

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An Investigation into the Relationship Between the Resistance of a Wire and Its Diameter and Length

- An Investigation into the Relationship Between the Resistance of a Wire and Its Diameter and Length Introduction In this investigation I hope to see whether there is a relationship between the thickness of a wire and its length with the resistance in which it produces. First of all, what is resistance. Resistance is calculated as R=V/I Where R is resistance, V = Potential Difference (Voltage) and I = Current (Amount of charge flowing per second) Resistance is the property of a conductor that restricts the flow of electricity through it, this is measure in Ω (Ohms) This Resistance can be because of many things such as the nature of the material, its tempera...   [tags: Papers]

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Circumference Formula

- Prove the Circumference Formula Introduction: Archimedes is credited to be the creator of the circumference formula, but more importantly to find the first theoretical calculation of Pi. Pi is an irrational number and the digits are continuous and never come to an end. Archimedes knew he had only found an approximation of pi, he found that pi is between 3 1/7 and 3 10/71. “Pi is a name given to the ratio of the circumference of a circle to the diameter. That means, for any circle, you can divide the circumference (the distance around the circle) by the diameter and always get exactly the same number....   [tags: Archimedes, Pi, diameter, circle, mathematics]

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The Effect of Smaller Needle Diameters in Reducing Pain during Immunizations in the Pediatric Population

- The study will be conducted at only one location and may be limited in its size this will be discussed in the description of the setting. Future research may be initiated from this study and a larger sample may be used that would have a larger impact on the pediatric population. The following topics will be discussed in this chapter and how they will impact the study: Design selection and Justification Independent, Dependent, and Extraneous Variables Description of the setting Sample plan Tools, Validity, and Reliability Discussion of Procedure, Human Rights, and IRB Data Analysis Design Selection and Justification Randomized experiment with random selection of sample....   [tags: Medical Research]

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What Is a Spectroscope?

- Introduction In this two part lab we are to build a spectroscope from parts included with our lab kit to visualize and analyze the spectra of several light sources. In the second part of the lab we are to build a pinhole viewer. We are to then take the pinhole viewer and measure the diameter of the sun and moon. After completing both parts of the lab, there are several questions that need addressing. This paper examines and answers those questions. Spectroscope To understand this week’s experiment one must first understand what a spectroscope is and what it does....   [tags: sun, moon, eath, light sources]

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Investigating the Resistance of Wires

- Investigating the Resistance of Wires Aim: To investigate how the diameter of a constantan wire will affect its resistance and hence the current flowing through it. Prediction: I predict that the thicker the diameter the less resistance there will be. Reason: In a metal, some of the electrons are free to move between the ions, to form a "sea" of electrons around the positive metal ions. Metals that are good conductors have more "free" electrons and therefore these electrons move easily around the positive metal ions....   [tags: Papers]

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The Resistance of a Wire

- The Resistance of a Wire Aim: To investigate factors effecting the resistance of wires Planning: There are four main factors which will affect the resistance of a wire. To choose the best factor to investigate, certain features must be considered: · It must provide a good range of results, i.e. the resistance values must vary greatly throughout the tests. · It must be easy to experiment on, i.e. the procedure is easily repeatable and hence reliable. The four factors that would affect the resistance of a wire are: 1....   [tags: Papers]

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Modelling the mass of banana fruit by geometrical attributes

- Some selected physical characteristics of the banana such as mass, true volume, bulk density, true density, geometric mean diameter, surface area etc and their statistics such as mean, standard deviation (SD) and standard error (SE) were presented in Tab. 1. These two statistics measure the consistency of the data. Table 1 Physical properties of banana var. Grand Nain S.No Physical properties Mean SD Min Max SE CV,% 1 Mass (M), g 139.65 7.66 126.05 154.29 1.47 5.48 2 True volume (V), cm3 136.33 9.86 118.00 157.00 1.90 7.24 3 Ellipsoidal volume (Vell) , cm3 117.92 9.09 98.15 131.33 1.75 7.70 4 Ellipsoidal ratio 1.08 0.02 1.05 1.12 0.00 2.14 5 Fruit density (TD), g/cm3 1.03 0.03 0.98 1.11 0.01...   [tags: banana fruit, physical characteristics ]

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Mathematical Modelling and Grand Nain

- Mathematical modelling was done to predict mass of the banana fruit var. Grand Nain from the physical characteristics like length, width, thickness, volume, geometrical mean diameter, etc. The observed physical properties of banana were statistically analysed and their mean, standard deviation, error and coefficient of variance were presented. The fitted models were divided into three classifications. Among the first classification model, empirical equation describing the length and width (model no.4) predicts the mass with highest R2 value....   [tags: agricultural products, banana fruit]

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Turning a Mild Steel Bar

- TASK: Turning a Mild Steel Bar.We were each given a mild steel bar to work into the shape shown in the drawing found on the following pages, TURNING TASK: Turning a Mild Steel Bar. We were each given a mild steel bar to work into the shape shown in the drawing found on the following pages, to do this we used the Turning Lathe in the workshop, but before we could start some measurements had to be taken. This meant using a micrometer to determine the diameter of the bar to begin with. A micrometer allows a measurement of the size of a body....   [tags: Design and Technology]

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Experimental Study of Gas Absorpiton in a Dry System and in a Wet System

- INTRODUCTION Acid gases, such as HCl and SO2, and dust particles emitted from fixed and mobile sources such as incinerators and diesel engines cause serious air pollution and the damages to process apparatus. To effectively reduce the acid gases and the dust particles, two treatment systems, dry and wet scrubbing systems, have been commonly used. The dry scrubbing systems are simple and no need of slurry treatment, but the conversion of sorbent and the removal efficiency of gas are low. While the wet scrubbing systems are complex and discharge liquid waste, give high removal efficiencies of gas and dust particles....   [tags: Engines, Dust, Chemistry]

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Optimization of Extrusion Cooking Process for Rice-Fish Extrudates with an Underutilized Fish Meal

- MATERIALS AND METHODS Preparation of fish Sea bass (underutilized fish) procured from the Ukkadam fish market were used in this study. It was thoroughly washed with potable water after removing scales, viscera and bones. The fish fillet was ground in a pulverizer and was then mixed with rice flour. Preparation of rice-fish flour The ingredients viz., fish paste, rice flour, water and salt were used for the preparation. The fish paste, rice flour and salt were mixed properly, adjusted to a desired moisture content by adding water....   [tags: preparation, fish, extrusion, properties]

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A Physics Investigation

- A Physics Investigation Aim In this coursework I will be investigating into how a diameter of a cone can affect the time it takes to hit the floor from the height of 2 metres. My partner or myself will drop the cone with the base facing the ceiling. I will be trying to find out which cone travels through the air the fastest by doing extensive testing on the different cone sizes. As I established above, I will be adjusting the diameter of the cone and seeing if this has an affect on the time it takes to fall to the ground....   [tags: Papers]

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Internal Transport and Gas Exchange

- ... The inferior vena cava is the vein that transports blood from the lower half of the body, or areas of the body that are below the diaphragm, into the heart (Clinic, 2014). The heart is split into two pumps that are located right next to each other. Each pump works a single blood circuit. The left side of the heart is the systemic circuit and the right side of the heart is the pulmonary circuit. The pulmonary circuit is the blood route that takes the blood from heart to the lungs. Once the exchange of gases is complete in the lungs, the blood is pumped out of the lungs into the left side of the heart....   [tags: blood, circulatory system, nutrients, oxygen]

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The Effects of Different Salt Solutions on Potatoes

- The Effects of Different Salt Solutions on Potatoes Plan My aim is to investigate how different concentrations of salt solution affect the movement of water through a partially permeable membrane (osmosis) in potatoes. Osmosis is the movement of water from a high concentration to a low concentration through a partially permeable membrane. I will add pieces of potato to varying concentrations of salt solution, wait on each solution and then record the results. I will eventually use the results to measure the percentage change in mass of the potatoes....   [tags: Papers]

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Mechanically Ventilated Patients, An Annotated Bibliography

- ... The decrease in SVV found using Flotrac and PiCCO plus were significant and also the correlation between found between the two SVVs were significant. He also found that SVV measured using FloTrac has lower threshold for prediction than the other. Jan Benes et al(4) conducted a study in patients undergoing major abdominal surgery. He studied the effect of SVV guided fluid optimization intraoperatively on organ function and postoperative morbidity. He had two study groups one with SVV monitored using vigileo systems and other with routine intaoperative care....   [tags: respiratory system, responsiveness]

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Comparative Diagnostic Imaging

- This assignment will endeavour to demonstrate the map of medicine as followed within the National Health Service for the diagnosis, treatment and follow-up of abdominal aortic aneurysms (AAA). It shall discuss the current AAA screening programme being implemented across the United Kingdom to include the use of Ultrasound and Computed Tomography (CT) as imaging modalities in the demonstration of AAAs. Both the advantages and disadvantages of the modalities used during the diagnosis and treatment of AAA will be shown....   [tags: medicine, nuclear medicine]

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Investigating the Effects Catalyse Has on Hydrogen Peroxide Solution

- Investigating the Effects Catalyse Has on Hydrogen Peroxide Solution Aim: I am going to investigate the effects which catalyse has on a hydrogen peroxide solution Preliminary work We would use potato to do the experiment because we had done a previous experiment when we put a piece of potato and liver into a hydrogen peroxide solution and the rate of reaction for the liver was too fast to measure and time. But the potato had a slower reaction which will be easier to time and we can measure the size of the froth using a ruler....   [tags: Papers]

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Data Analysis And Experimental Uncertainty

- Types of Uncertainty There are two basic kinds of uncertainties, systematic and random uncertainties. Systematic un- certainties are those due to faults in the measuring instrument or in the techniques used in the experiment. Here are some examples of systematic uncertainty: • If you measure the length of a table with a steel tape which has a kink in it, you will obtain a value which will appear to be too large by an amount equal to the loss in length resulting from the kink. On the other hand, a calibration error in the steel tape itselfâ€"an incorrect spacing of the markingsâ€"will produce a bias in one direction....   [tags: Physics]

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Resistance of a Wire Investigation

- Resistance of a Wire Investigation Aim: The aim of this experiment is to explore the effects of resistance that travels through a constantan wire when induced with an electric current. Introduction Resistance is measured in Ohms (Ω). The formula for calculating resistance is: V=IR R=I/V I=V/R An electric current is commonly described as the 'flow of a sea of electrons'. Electrons are inside an atom, they are very small in size, and extremely small in weight compared to the rest of an atom, made up of neutrons and protons....   [tags: Papers]

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Characteristics of Comic Books: The Amazing Spiderman

- OBJECTIVE OF THE PROJECT Our objective is to design and simulate a mechanism to implement the conventional four wheel steering and the four wheel crab steering in the same vehicle thereby reducing the turning radius of vehicle using four wheel conventional steering and easy manoeuvring of vehicle at high speeds using crab steering. The control for shifting from one type of steering to another is provided to the driver so that he can change from conventional to crab steering depending upon the vehicle speed....   [tags: rhetorical strategies, genre]

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Mathematics of Lenses and Optical Glass

- Missing figures PROPERTIES OF LENSES, OPTICAL GLASS Composition Glass is a solid, structureless and amorphous. There are two main group classification of optical glass: 1. Crown, and 2. Flint (has a high content of lead oxide) Chemicals are combined to produce new glass types. These new glass types are used to benefit other different types of cameras (such as high-speed minature cameras, black/white cameras, etc). Properties The most important optical characteristics of a glass are its refractive index and its degree of dispersion....   [tags: Math]

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The Physics of Ultrasound

- Without the use of physics in the medical field today, diagnosis of problems would be challenging, to say the least. The world of medical imaging in particular has benefited greatly from the use of physics. Ultrasound is sound waves that have a frequency above human audible. (Ultrasound Physics and Instrument 111). With a shorter wavelength than audible sound, these waves can be directed into a narrow beam that is used in imaging soft tissues. As with audible sound waves, ultrasound waves must have a medium in which to travel and are subject to interference....   [tags: Physics, Ultrasounds, medical, ]

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Natural Disasters: Horrendous Hurricanes

- According to the Oxford English Dictionary, a hurricane is “any storm or tempest in which the wind blows with terrific violence.” Hurricanes only form over warm waters; wind is pushed in from surrounding, high pressure areas towards the low pressure center. The storm grows and forms an eye as it moves faster and faster (“How Do Hurricanes Form?”). If a colossal hurricane was approaching your community, what would you do. How would you prepare. In a survey I conducted of 12 people who have endured one or more hurricanes, about 92% prepared by buying extra food and water (Colosimo)....   [tags: warm waters, katrina, andrew, tornados]

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Caluclating Major and Minor Head Losses

- INTRODUCTION The project was about calculating the major and minor head losses. In the first experiment, it investigate the minor head loss through pipes of different diameter and roughness, also through elbows. The experiment was about obtaining two different pressures at point 1 and 2 so we can obtain the difference in pressure so we can calculate the friction that is also present in Darcie's equation of head loss. However, in the second experiment, the purpose was to calculate the major losses from both laminar and turbulent flow....   [tags: pipes, valves, friction]

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Steel Manufacturing

- Introduction In past few years, companies and industries of various sizes have become aware that they need to improve business processes such as product development, order fulfilment, planning, distribution, and customer service. So everybody is now focusing on doing process improvement or redesigning. Steel containers position an arousing curiosity or attention in the engineering and policy challenge to society. They have to meet the condition of a countable quantity of structural and physical standard, must be reasonably priced, and must have a negligible impact on the environment....   [tags: Manufacturing]

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Dietary Analysis of Sympatric Mammalian Carnivores in the Keweenaw Peninsula

- ... Additionally, the feces of large carnivores, in particular wolves, can take on a white appearance due to high calcium content from ingesting bone. Feces of the American marten and fishers have diameters ranging from 10-16mm and can be distinguished from that of a fox due to their twisted, corkscrew appearance (Chames 2003). Following identification, each scat was weighed and separated by hand into three categories: hard parts (bone, teeth, and claws), hair, and plant material. The three categories were then separately weighed and samples of hair and bone were examined microscopically to aid in identification of prey remains....   [tags: resource partitioning among animals]

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Analyzing Particulate Matter Trends in Kejimkujik National Park, Nova Scotia 1979 - 2010

- Introduction Particulate matter (PM) is a comprehensive air pollutant that is made up of a mixture of solid and liquid particulates within the atmosphere. Poor air quality has a negative effect on human health; however soils, vegetation, and visibility can also be affected (AAQC, 2012). Particulate matter can vary among sizes, ranging from 0.005µm to 100µm in diameter (Environment Canada, 1999). The most common method to identify PM is to determine if the diameter is equal or less than 2.5µm....   [tags: Comprehensive Air Pollutant]

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Transmission of Pain Signals by the Brain at the Spinal Level

- Transmission of Pain Signals by the Brain at the Spinal Level Pain has been defined by Coates & Hindle as an unpleasant emotional and sensory experience which signals a potential or actual damage to tissues (2011, p. 213). Pain is a common human experience and can emanate from injury and illness. There are two main types of pain; acute pain is short-lived, lasting for minutes or several days and its onset often takes place rapidly. It results from the activation of pain nerve endings or nociceptors either by internal or external pain stimuli....   [tags: Anatomy, The Central Nervous System]

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Design and Flow Analysis of Electromagnetic Plasma Arc Propulsion System

- 1.Introduction A rocket engine, or simply "rocket", is a jet engine that uses only stored propellant mass for forming its high speed propulsive jet. Rocket engines are reaction engines and obtain thrust in accordance with Newton's third law. Since they need no external material to form their jet, rocket engines can be used for spacecraft propulsion as well as terrestrial uses, such as missiles.Rocket engines as a group have the highest exhaust velocities, are by far the lightest, but are the least propellant efficient of all types of jet engines....   [tags: applied physics, technology]

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Effect of fluoride ions on corrosion behavior of nickel

- 1. Introduction: Titanium alloys are very reactive materials and reacts instaneusely with oxygen, forming an oxide film, which give them excellent anti corrosive properties [??]. Thus, titanium alloys have proven to be the most tissue compatible inorganic materials, especially for dentistry [???]. Nickel-titanium wires, which have a near equiatomic composition, were introduced to orthodontic clinical use by Andersen and colleagues in the early 1970’s [???]. They have been highly popular in dentistry because have a much lower elastic modulus and wider elastic range than other orthodontic wires such as those composed of beta-titanium, stainless steel, and cobalt-chromium-nickel [???]....   [tags: Health, Dental Care]

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Surgical Management of Mucocele by Using Diode Laser

- Introduction Mucus extravasation cyst or mucocele is commonly occurring lesion in oral mucosa containing mucin that may result from trauma to minor salivary glands. It is a well‑defined tissue swelling composed of pooled mucus that escaped into the connective tissue from a severed excretory duct. The incidence rate is high and it is the second most commonly occurring lesion after irritational fibroma in the oral cavity, prevalent in second decade of life with no sex predilection. Commonly involving lower lip, followed by tongue, buccal mucosa, palate, and retromolar area....   [tags: Medical Case Studies]

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The Drag Coefficient on Kinder's Egg Container

- Introduction Our group called “Kinder” has decided to estimate the drag coefficient on Kinder’s egg container which is quite similar to the cylinder. Particularly that cylinder is experiencing the flow over its flat face. Its drag coefficient is going to be measured in fluid of air wind. The airflow would be supplied by ordinary hair dryer. The velocity of air wind will be measured by the help of anemometer, which we would construct by ourselves with improvised materials such as plastic cups, pencil, pin and straws....   [tags: Physics ]

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Fighting Over One Hundred Years for Modernism

- Oscar Niemeyer caught the eye of many generations of architects; he became known as a key factor in modern architecture. He pushed boundaries, making modern a whole new concept. Oscar Niemeyer was not born with the name he is known by, he shortened his name. He was born 8Oscar Ribeiro de Almeida Niemeyer Soares Filho. He was born on December 15th, 1907 and lived for almost 105 years, but he died ten days before his birthday on december 5th, 2012. 2Niemeyer was born in the city of Rio de Janeiro and he grew up there....   [tags: Cathedrals, Architects]

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Measuring the Resistivity of a Wire

- Measuring the Resistivity of a Wire Aim The aim of this experiment is to find out how the area of the cross section of the wire affects the resistance and also to find out the resistivity of the wire having found the resistance over a certain length and using a certain cross sectional area. I will also experiment to see how the length of the wire affects the resistance. Plan The first thing that I will do is to set up the apparatus as shown below. A,V Except for the experiment where I alter the length, I will keep the length of the wire constant throughout the experiments and only change the diameter of the wire....   [tags: Papers]

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The Art of Knitting and Crocheting

- I have always liked fiber and assorted yarn. I am like a child in a candy store whenever I go to the yarn store. The hanks of fiber arranged by color mesmerize me, calling for me to bring them home, to see what I will create with them. I love how the yarn store is organized by color and wool textures. They challenge me, taunting me, begging me to turn the colorful skein into a one of a kind handcrafted creation. Will this colorful skein of yarn become knotted to make an afghan, a sweater, socks or hats....   [tags: craft]

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Abdominal Aortic Aneurysm

- The cardiovascular system is the most important system in our body. This system is what keeps us alive. Beating on average 30 billion times a year, our heart is never able to stop and take a break. With every beat of our heart, the cardiovascular system moves blood, gases, nutrients, and hormones throughout the intricate vasculature of our bodies. An adult body contains over 60,000 miles of vessels, which can wrap around the world two and a half times. The vessel branching off of the heart is largest artery in our body and is known as the aorta....   [tags: Medical Conditions]

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Multiple Sclerosis and Action Potentials

- 1. (10) b. Explain why in multiple sclerosis the action potentials take longer to reach their muscle and neurological targets or do not reach them at all, resulting in muscle spasms and weakness in one or more limbs, bladder dysfunction, local sensory losses, visual disturbances and other neurological deficits. c. Explain the speed of action potential in the normal person. Be sure to provide documentation using any example from the literature (provide the pdf-version of the article) and summary that supports your conclusion....   [tags: neurological defecits]

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Designing a Gas Pipeline

- ... (O. A. Almisned, 2002 ) Moreover, in this research a gas pipeline is designed taking into account the fluid type, transportation distances, diameter, wall thickness, material selection and other properties to determine the criteria for the pipeline. A computer programming Pipesim simulator is a steady-state, multiphase flow for designing and badge investigation of gas production systems. in addition to, the programmer investigates flow line and performance of surface facility to produce full production system analysis....   [tags: engineering considerations]

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Heat transfer of nanofluids in turbulent pipe flow

- Heat transfer of nanoparticle suspensions in turbulent pipe flow is studied theoretically. The main idea upon which this work is based is that nanofluids behave more like singlephase fluids than like conventional solidliquid mixtures. This assumption implies that all the convective heat transfer correlations available in the literature for single-phase flows can be extended to nanoparticle suspensions, provided that the thermophysical properties appearing in them are the nanofluid effective properties calculated at the reference temperature....   [tags: Technology, Nanofluids]

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The Benefits of Continuously Variable Transmissions (CVT)

- Introduction We are constantly searching for ways to perform the tasks essential to our lifestyle in ways that have a smaller impact on the environment. In the United States cars are exceedingly common, nearly twenty percent of American households own three or more vehicles (U.S. Department of Energy Web). These vehicles are also one of the largest contributors to our impact on the environment. The majority of cars use automatic transmissions, although not very efficient, they offer convenience of not shifting gears....   [tags: transportation, vehicles, ]

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Jupiter: The Gas Planet

- Jove, Jowisz, the gas planet, the stormy planet, whatever you call it, these are all names for the biggest planet in our solar system, the fifth planet from the sun, Jupiter. The Romans named this planet after their god of the sky and thunder. This planet has 318 times as much mass as the earth, and its diameter is 11 times the earth’s diameter. Since this planet is the fastest spinning (rotates in less than 10 hours), it is flattened at the poles and it is bulged at its equator. One Jovian year (the time it takes to orbit the sun), take 11.9 earth years....   [tags: biggest planet, solar system, great red spot]

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What is Cardiac Catheterization?

- ... The deflectable tip is glued to a 2.4mm nylon braided catheter shaft using Loctite 4061 which is a medically certified adhesive. The control wire is a 0.25mm diameter wide carbon-fiber wire, which acts as a pulling thread and is fixed to the tip of the deflectable section of the catheter. This control wire is glued to the distal tip of a 0.5mm carbon fiber rod, which slides into the catheter shaft and the base of the control rod is linked to a custom design plastic handle. The catheter will be used for heart interventions in high magnetic fields....   [tags: blood sample, X-ray ]

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Factors Affecting the Resistance of a Metal Wire

- Factors Affecting the Resistance of a Metal Wire 1. Investigate some of the factors that affect the resistance of a metal wire. The current and voltage will be measured and then V = IR will be used to calculate the resistance. The potential divider circuit produced better results in the investigation into how resistance depends on the number of identical resistors connected in series, so this circuit will be used for this investigation, too. Variables and Constants 2. Possible variables include the length of the wire, the diameter of the wire, the material of the wire and the temperature....   [tags: Papers]

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Regulating Air Pollution

- 1. Introduction 2. Background study 3. Proposed research 4. Project plan and time management 5. CPM diagram 6. References 7. Appendix INTRODUCTION: Air pollution is presently a large concern all over the planet. According to NOAA (National Oceanic’s and Atmospheric Agency) 50,000 deaths happening only in United States of America every year with respiratory diseases caused due to air pollution and estimates that it costs around $150billion per annum in order to regulate air pollution [1]....   [tags: air filter, electret, filtration]

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Environment: Emissions Reduction

- Recommendations for Process Optimization Emissions Reduction Air pollution control has become a requirement set forth by the Environmental Protection Agency for every incineration facility. All pollution control equipment must be able to operate in such manner that it control and limit emissions and particulates {nitrogen oxides (NOx), sulfur oxides (SOx) and carbon monoxide (CO)} (“Biosolids Technology Fact Sheet”, 2003). The EPA expects that air pollution control devices will reduce nationwide emissions from sewage sludge incinerators by four pounds per year of mercury, 450 tons per year of acid gases, 58 tons per year of particulate matter, and 1.7 tons per year of cadmium and lead (USEPA...   [tags: air pollution, reducing solids, landfill]

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The Relationship Between Length, Width and Resistance of a Wire

- The Relationship Between Length, Width and Resistance of a Wire Aim: To investigate how the length and width of a wire affects the resistance of the wire. What is resistance. Electricity is conducted through a conductor, in this case wire, by means of free electrons. The number of free electrons depends on the material and more free electrons means a better conductor, i.e. gold has less resistance. For example, gold has more free electrons than iron and, as a result, it is a better conductor....   [tags: Papers]

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WHITE BLOOD CELLS

- White Blood Cells Bacteria exist everywhere in the environment and have continuous access to the body through the mouth, nose and pores of skin. Further more, many cells age and die daily and their remains must be removed, this is where the white blood cell plays its role. According to this quotation, without white blood cells, also known as leukocytes, we would not be able to survive. White blood cells are our body’s number one defense against infections. They help keep us clean from foreign bacteria that enter our bodies....   [tags: essays research papers fc]

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The Construction of Palm Island, Dubai

- The amazing technology that was used in the construction of Palm Islands in Dubai. In construction, technology may be used as means to perfect, accelerate the time of construction and perform the seemingly impossible. Palm Islands was a complex project in the sense that only natural materials were used and the shape was somewhat peculiar. This land reclamation project increased Dubai’s shoreline by 75km where 94 million cubic meters of sand and 5.5 million cubic meters of stone were used to create the palm shaped island on which luxury villas and hotels were to be later built, C.Gibling (2013, pg 4)....   [tags: technology, construction]

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The Circulatory System and Fluid Dynamics

- ... Shear stress depends upon the blood flow, the geometry of the vessel and the fluid viscosity and expressed in terms of dynes/cm2. The shear stresses imposed by the blood fluid flow in the vasculature play an extremely important role in determining the structure and physiology of the endothelial cells lining the vasculature. The blood flow inside the linear vessels is laminar in nature under normal conditions. At steady state i.e. at low and inconsistent shear stress, the endothelial cells continue to maintain a cuboidal shape....   [tags: arterioles, arteries, laminar fluids, turbulence]

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The Earliest Microscopes and Pond Ecology

- ... The revolving nose piece holds two or more objective lenses with different objective power. Many microscopes have Diaphragm or Iris control the intensity and size of light. All these parts in microscope help observe the specimen.                      Pond Ecology is the interaction of life in pond with environment. Pond have low oxygen levels, little animal life, and lack of food supply. A pond contains mostly water, few nutrients, and less aquatic life. Organisms live, grow, and die in the pond....   [tags: electron microscope, environment]

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The Solar System

- Our solar system was born when, in a spiral arm of the Milky Way galaxy, a giant rotating cloud of dust and gasses began to collapse. Gravity compressed the dust and gasses and the cloud got increasingly hotter and began to spin faster. During the following one hundred million years, the gasses compressed until the center was so hot that nuclear fusion occurred giving off tremendous energy, combining charged atoms of hydrogen to form helium. This process gave birth to a star, our Sun (Our Solar System, n.d.)....   [tags: Astronomy]

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Nanotechnology: What are Carbon Nanotubes?

- ... Research in carbon nanotubes is moving ahead discovering new forms, applications and Solar thermal storage is a result of one such research. TYPES OF CARBON NANOTUBES Single wall carbon nanotubes (SWNT) A sheet of graphite rolled into a tube with a singular cylindrical wall is called a SWNT. These are normally capped off at the ends. They have a diameter of close to 1nm. However they come in different lengths. One major advantage of the SWNT is that it can be twisted, flattened and even bent into small circles....   [tags: carbon nanowires, properties]

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Application of CFD Simulation for Evaluating the Separation Efficiency of Deoiling Hydrocyclones

- Introduction Having an efficient and reliable system for oil-water separation is of crucial importance especially for offshore oil and gas industry. Due to the platform movement, space, weight and operating limitations in offshore, the usage of common methods (gravity based vessels) for oil/water separation are ineffective. On the other hand producing oil is often accompanied by large amount of water that is discharged into the sea on offshore platforms. The amount of oil in water is confined from environmental standards....   [tags: Environment, Oil-water Separation]

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Comparing the Hagia Sophia and the Suleymanye Mosques in Istambul

- Introduction: In the following essay, I will be comparing the Hagia Sophia in the City of Istanbul, and the Suleymaniye Mosque of Istanbul. Both of these pieces of art are very significant to the in modern-day Turkey. The art pieces will be covered in more detail further on in this comparative essay, and finally, I will be judging the pieces at the end of this essay Description: When Emperor Constantine found the city of Constantinople, it was soon to become the capital of the Eastern Roman Empire....   [tags: religious art and architecture in Turkey]

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Harry Potter's Quidditch Adapted to Play on the Ground

- ... The Seeker’s job is probably the most important one on the team, and it is to catch the Golden Snitch before the opposing team’s Seeker. The Snitch is a small golden ball the approximate size of a walnut 1 inch in diameter with silver wings that move so fast that it nearly impossible to see. Catching the Golden Snitch ends the game and wins 150 points for his or her team. The Harry Potter series made such an impression to fans everywhere that in 2005 Muggle quidditch was created by Alexander Manshel, the first Quidditch Commissioner, at Middlebury College in Middlebury, Vermont....   [tags: quaffle, blunder, snitch]

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Poiseuille’s Law Assists in Knowledge About the Human Body

- ... Capillaries in the lungs are extremely small, but have a vast amount of surface area they can cover. When a patient is exercising, blood vessels will become dilated and blood pressure will increase (Connexions). Patients who have a constantly high blood pressure will have a decrease in cardiac muscle tone and thin blood vessel walls. Capillaries tend to be extremely small, which causes them to have a decreased radius and an increase in airway resistance. Poiseuille’s law states that a decrease in half the radius will cause an increase of airway resistance by sixteen percent (Connexions)....   [tags: volume, resistence, pressure]

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Lens Types: Single Vision, Bifocal, Trifocal, and Progressive

- Lens Types It is essential that all people have a basic understanding of lenses. Eventually, all people will need reading glasses if they do not need glasses from the very beginning of their life. The user needs to have a general knowledge of what is available and the different characteristics of some basic lens types. Also, the understanding of one’s own needs is necessary to avoid being steered into a more lucrative sale for the commission paid optician. Eyeglass lenses are one of the many different types of lenses....   [tags: Classification of Eyeglass Lenses]

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1286 words | (3.7 pages) | Preview

A Violently Rotating, Tall, Narrow Column of Air

- Tornadoes are destructive forces of nature that can form rapidly and devastate towns and communities but with proper education and preparation, the damage can be minimal. Tornadoes are defined as “a violently rotating, tall, narrow column of air (that is, a vortex), typically about 300 ft. (100m) in diameter, that extends to the ground from a cumulonimbus cloud” (Davies-Jones 1). Tornadoes are notorious for forming in the central part of the United States, and most of them do, but they can form also form in many other parts of the world including Russia, China, South Africa, and Australia....   [tags: tornadoes, thunderstorms, mesocyclone]

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Potential Antibacterial Properties Found in Gonium Pectorale

- With the threat of bioterrorism in modern day society, the search for new disaster prevention is at an all time high. After the events of September 11, 2001, the United States was plagued with numerous threats from a small bacterium, Bacillus anthracis. Bacillus anthracis, or anthrax, is a sporulating bacterium which has devastating effects on those who ingest the spore. There are three types of anthrax infections. The first, cutaneous, is the least violent. The remaining two types of infections, inhalation and gastrointestinal are both commonly associated with severe pain and eventual death (Pearson et al 2004)....   [tags: Bioterrorism]

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The Xenophyophores Found in Mariana Trench

- Xenophyophores Deep sea is the largest ecosystem on Earth and it exhibited a large diversity of life forms that appeared to be bizarre and curious to both general and scientific communities. The sediment samples obtained from deep seas were usually containing fecal pellets (released by animals lived in photic zone of ocean), foraminiferan tests, as well as organic matters. Recently, during the July of 2011, researchers with Scripps Institution of Oceanography at UC San Diego and National Geographic engineers carried out deep sea explorations at the Pacific Ocean chasm, discovered and documented the existence of xenophyophores in Mariana Trench (Giant amoebas, 2012)....   [tags: deep sea, scientific community, ocean]

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The Study of Comets and Asteroids

- ... Astronomers categorize comets into two groups. Short and long period comets due to the time they take to orbit the sun. Short period comets take less than two hundred years while long period comets take two hundred or more years. Astronomers doubt that short-period comets come from the Kuiper belt which is basically a band of objects close to Pluto’s orbit. They believe that the gravitational pull of the planets can cause an object to be dislodged into the Solar system and turn into comets....   [tags: gas, energy, sun, astronomers]

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Design of Concrete Structure with Staad.pro

- Figure 3 11. BBS of a Beam Bar Bending Schedule of Columns The column’s reinforcement are not particularly similar on all floors, therefore all columns were studied floor wise. The columns are also divided in two phases per floor, similar to that of beams. The values derived from the STAAD.Pro results re percentage of steel and stirrup spacing. The percentage is multiplied with the gross area of section and the reinforcement area is achieved. STAAD.Pro aims at lesser number of bars with higher diameter, but it cannot always be sufficient, therefore the number of bars were calculated manually for all columns....   [tags: foundation, columns, reinforcement]

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Investigation of Pit Size Versus Larval Size in an Antlion

- Investigation of Pit Size Versus Larval Size in an Antlion The purpose of this study was to test whether there was a relationship between the size of an antlion and the size of its pit. Fieldwork was undertaken at UT's Brackenridge Field Laboratory in Austin, Texas. There we selected two aggregations of larval antlions from which to obtain the data. Pit diameter and slope were measured to obtain the pit volume. After pits were measured, larvae were collected and weighted in the lab with an analytical balance....   [tags: Papers]

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The Structure and Function Of Arteries, Veins and Capillaries

- The Structure and Function Of Arteries, Veins and Capillaries In its route from the heart to the tissues, the blood passes through channels of six foremost types: elastic arteries, muscular arteries, arterioles, capillaries, venules and veins. I intend to explore the structure and function of arteries, veins and capillaries. When an artery branches into smaller and smaller vessels, eventually the blood vessel is too small to see with the naked eye. At that point, it is called an arteriole....   [tags: Papers]

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Reproduction and Early Life History of the Sculpin Fish

- Reproduction and Early Life History of the Sculpin Fish Have you ever personally thought that fish were an interesting subject. Most people don't. The majority of individuals consider fish ordinary, routine and insignificant. However with a closer look, you may discover that fish can be extraordinary and extremely significant in more ways than one. With proper education and better understanding, people will not only realize the importance of the fish, but also the relevance of issues such as the spawning, life history and life span of fish such as Jordania zonope (sculpins)....   [tags: Papers]

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The Resistance of a Wire

- The Resistance of a Wire Planning These are the four factors that can affect the resistance of a wire. How thick the wire is How long the wire is Factors that can affect resistance The heat of the wire What the wire is made of Background theory In metals the molecules are usually single atoms and electrical forces hold these together. The atoms are packed tightly together in a regular pattern and electrical forces hold these together. The tight packing causes outer electrons to get separated from their atoms....   [tags: Papers]

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A Water Treatment Process

- ... There are two different phases in this process which are “rapid mixing to disperse coagulant chemicals by violent agitation into the water being treated and flocculation to agglomerate small particles into well-defined flock by gentle agitation for a much longer time” (Omran, 2011, p. 58). In this method, Omran (2011) believed that stable particles (unsticky) is converted to unstable (sticky) particles due to effectiveness of coagulant. Due to this method, Olumuyiwa, Fred and George (2012) reviewed that small size particles is transformed into bigger ones with higher rate of velocity and sedimentation and the sludge formed can then be disposed off....   [tags: the importance of freshwater]

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A Closer Look at Mimas

- The Saturn Moon Mimas Mimas is an inner moon of Saturn and is the innermost of the major moons, which are Enceliadus, Tethys, Dione, Rhea, Titan, Hyperion, Iapetus, and Phoebe. Mimas has a crater named the Herschel Crater, which is approximately 88 miles and one-third the diameter of Mimas. The walls of the Herschel Crater are approximately 3 miles high and parts of the floor of the crater range approximately 6 miles deep. The central peak towers of the Herschel Crater on Mimas are almost 4 miles above the floor of the crater....   [tags: Astronomy]

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Cooperation in Space Situational Awareness

- Today, every branch of the U.S. military relies on space in some capacity to carry out its mission. Concurrently, it is becoming more difficult for the U.S. to retain its leadership role among countries that operate satellites and for the country to remain free to operate in space. One of the greatest of the challenges to operation in space that has become increasingly important over the last ten years is that of space situational awareness (SSA). As the number of objects in orbit grows, and as more and more new organizations, both commercial and governmental, operate in space, the problem is only going to become more challenging....   [tags: Space Exploration ]

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Overview of the Sugar Pine

- Pinus lambertiana, commonly known as the sugar pine, is found on the west coast in the mountains of Nevada, California, Oregon and Mexico. The sugar pine is the tallest of all pines and has the longest cones of any conifer. It is very important in these regions for both economical purposes and the environment. (Habeck) The sugar pine is said to be the worlds largest pine, growing to nearly 200 feet tall with a trunk diameter of seven feet. (About sugar pine) The tallest recorded sugar pine still alive today, however, is 255 feet tall with a seven and a half foot diameter....   [tags: Pinus Lambertiana, Pine Trees]

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Forensic Science: Bloodstain Pattern Analysis

- Introduction Bloodstain pattern analysis (BPA) is one of many specialties in the field of forensic science; the science of bloodstain pattern analysis use scientific knowledge from other fields to solve problems. BPA also uses the scientific method to examine bloodstain evidence at a crime scene where blood is present by gathering information, observing, documenting, analyzing, evaluating, and technical or peer reviewing. A bloodstain pattern analysis job is to collect, categorize and interpret the shape and distribution of bloodstains within a crime scene (Peschel, 2011)....   [tags: locard’s principle, crime scene, investigators]

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922 words | (2.6 pages) | Preview

Fiber Optics: Meeting Today's Data Transmission Requirements

- Today’s data transmission requirements are high. Fiber optics, a technology used directly and indirectly in common items such as cell phones and other common and unexpected ways, is made of basic materials, but its uses are seemingly endless. Manufacturers have several different methods of manufacturing and testing optical fibers. Commercial quality fibers are made from quartz, but refined to make the flexible fibers that are used. Sending light through the fiber and checking the quality of the signal is one way to test optical fibers....   [tags: communication and computer technology]

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Gross Anatomy of the Lungs

- Gross Anatomy of the Lungs An accurate and complete model of the branching pattern of the human bronchial tree remains elusive, though several different models have been described (Phillips et al, 1994). The most useful and widely accepted approach remains that of Weibel (Weibel, 1963; Weibel, 1991), who numbered successive generations of air passages from the trachea (generation 0) down to alveolar sacs (generation 23). This “regular dichotomy” model assumes that each bronchus regularly divides into two approximately equal-size daughter bronchi; it is unlikely to be tru in practice where bronchus length is variable, pairs of daughter bronchi are often uneq...   [tags: Papers]

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1126 words | (3.2 pages) | Preview

Investigating Resistance of a Wire

- Investigating Resistance of a Wire Aim: To investigate how the resistance of a piece of resistance wire depends on length and to find the length of wire needed to make the required resistance. Prediction: I predict that when you increase the length of the resistance wire the resistance will increase. I am predicting that this will occur because of the preliminary investigation where we found that in a series circuit resistance wires put together produce a higher resistance....   [tags: Papers]

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1484 words | (4.2 pages) | Preview

Overview of Cork Cambium

- Overtime, vascular plants have evolved in order to adapt to the new and changing environment, and one of those being the development of secondary growth. Secondary growth is defines as the increase in diameter of the stems, roots, or branches. This growth was most likely developed and evolved due to an increasing demand for sunlight in the lateral meristems of dicots and some gymnosperms. Cork cambium is one of the two lateral meristems which makes up the periderm along with cork and phelloderm in the stems....   [tags: Vascular Plants, Adaptation, Environment]

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1032 words | (2.9 pages) | Preview

Orthopaedic Device Company Depuy

- In 2010 the orthopaedic device company Depuy, a subsidiary of Johnson & Johnson, made a move to recall its Metal on Metal (MoM) ASR and ASR XL hip replacement systems from the international market. The recall of these product was due to an excessively high failure rate (Cohen 2011). The inability to simulate in situ conditions lead to the inability to design and implement and affect mean of hip arthroplasty devices. With over 93,000 devices installed the litigation resulting from the failure of this product is on going....   [tags: failure, recall, replacement]

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The Physics of Ultrasounds

- The Physics of Ultrasounds Without the use of physics in the medical field today, diagnosis of problems would be challenging, to say the least. The world of medical imaging in particular has benefited greatly from the use of physics. Ultrasound is sound waves that have a frequency too high for humans to hear. With a shorter wavelength than audible sound, these waves can be directed into a narrow beam that is used in imaging soft tissues (Farr and Allisy-Roberts 183). As with audible sound waves, ultrasound waves must have a medium in which to travel and are subject to interference....   [tags: Medicine Medical Technology Essays]

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Resistance of a Wire

- Resistance of a Wire We are trying to find out what affects the resistance of a wire. Resistance is the slowing down of electric flow (flow of electrons) due to metal ions. The equation to measure resistance is: Resistance = Voltage ÷ Current R = V / I Resistance is measures in 'volts per amps' or, more commonly, 'Ohms' (Ω). There are a few things that affect resistance. I think these are: ¶ Length of wire ¶ Diameter of wire ¶ Material/type of wire ¶ Temperature I am going to try and find out how the diameter of the wire affects the resistance of the wire....   [tags: Papers]

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2648 words | (7.6 pages) | Preview

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