Flight History of the Propeller The aircraft propeller looks like a simple mechanism to the uneducated individual. To the educated, an aircraft propeller represents the highest sophistication in aerodynamics, mechanical engineering and structural design. This report will touch on the history of the propeller, from early pioneers/experiments, advancement during/after the war

IRWD IRWD RECLAMATION PLANT, IRVINE, CALIFORNIA Thursday, May 20, 2004 AT 2 P.M. At the Irvine Ranch Water District’s Michelson Water Reclamation plant tertiary, treatment is provided to reclaim wastewater. The method converges and expedites the process used by nature to clean water and to biodegrade waste material. Through the use of Primary Clarification, Flow Equalization, Activat

Origami Origami Polyhedra There are many ways to make polyhedra from paper without scissors or tape. Sonobe polyhedra are a great first method to learn. Sonobe polyhedra are easy to make and put together, require a relatively small number of modules to achieve impressive results, and can be used to construct an amazing number of different polyhedra. History of the Sonobe Module · Davi

What Is An Earthquake' What is an Earthquake and what are the different types' An earthquake is the motion of the earth’s crust, which can be caused by transforming, diverging or converging plates. (1) Each type of boundary produces a certain earthquake depth, focus and epicenter. When two or more plates collide, rub, or separate, tension is being to build from this movement. As th

When To Plant A New Tree "It's better to put a $100 tree in a $200 hole than to put a $200 tree in a $100 hole." Dig a shallow, broad planting hole. Make the hole wide, as much as three times the diameter of the root ball, but only as deep as the root ball. It is important to make the hole wide because the tree roots on the newly establishing tree must push through surrounding soil t

Abstract On A Research Article Tumor necrosis factor á (TNFá) - a pro-inflammatory cytokine - causes pleiotropic effects on numerous cell types. Excessive production of TNFá results in systemic inflammatory response syndrome (SIRS), which eventually leads to a circulatory collapse and multiple organ failure. Recent studies have shown that TNFá is controlled post-transcriptionally by the

Hardness Test ROCKWELL HARDNESS TEST Course: ME 212 Laboratory TABLE OF CONTENTS LIST OF FIGURES................................................................................................................. i LIST OF TABLES................................................................................

White Island Volcano White Island White Island is located in the Bay of Plenty, 30 miles north of Whakatane and Opotiki. It stands 1053' above sea level and approximately 70 % of the volcano is underwater, making it the largest volcanic structure in New Zealand. White Island presently the most active volcano in New Zealand, with a history of continuous hydrothermal activit

Whooping Cough Another name for the whooping caugh is Pertussis. Whooping cough is a bacterial infection that is most dangerous to children under two years old. Since whooping cough can be deadly, vaccination and treatment against whooping cough is very important. Vaccination against diphtheria, pertussis (whooping cough), tetanus and hib, is combined into one injection called

Optimal Temp And PH Of Enzymes Determining the optimal temperature and pH of alpha-amylase and starch solution Abstract A catalyst is the chemical agent that changes the rate of a reaction without being consumed by the reaction. A cell’s physical and chemical environment affects enzyme activity. The activity of an enzyme is affected by general environmental factors, such as te

Yes To Cloning! Imagine being able to add 50 years to your life. First you may be thinking, “Why would I do that' I’d be in horrible shape and everything would stop working!” Well that is until scientists are able to successfully use cloning to advance medicine into the future. Scientists have been toying for years with the idea of isolating cells to create embryos for a number of dif

Wright Brothers Through The Years THE WRIGHT BROTHERS THROUGH THE YEARS Outline Thesis Statement: The Wright brothers made one of the largest cultural forces since the invention of writing, for their invention became the World Wide Web of that time, bringing people, languages, ideas, and values together. Introduction: I. Boyhood A. Birth 1. Wilbur-April 16, 1867 2. Orville-A

Yellow Fever Family : Faviviridae Genus: Flavivirus Size: 40-50nm in diameter Shape: Spherical, nucleocapsid has icosahedral symmetry * single stranded RNA * nucleocapsid contains the RNA and a single core protein * has an envelope (made of lipid bilayer) * 66% protein, 12% carbohydrate, 17% lipid * morphogenesis occurs at intracellular membranes, after replication the

Stem Cell Research Stem Cell Research In a society boasting to be the most technologically advanced in human history, it’s hardly uncommon to hear of new discoveries destined to contribute to the ever-expanding field. While the word “technology” itself covers a broad range of topics, biotechnology narrows the focus to a field dedicated to the “use of living organisms or their product

A Time To Live, A Time To Die The concept of apoptosis, or programmed cell death, causes cellular death. Also, is it believed to be accountable for preventing webbed fingers in humans and may underlie the metamorphosis of amphibians and insects. However, there is a dark side to apoptosis. Apoptosis kills diseased cells that could be cancerous, which in return, shatter its contents ab

The Father Of Modern Science Galileo Galilei was born on about February 1564 in Pisa. Galileo’s father was an extremely talented musician who wanted his son to become a doctor, but chose a different field of study, science. Galileo was a gifted mathematician and became a chair man of mathematics at Pisa when he was only 25 years old. Galileo never got married but he had three children

Effects Of Ph Lab Report Lab Report Title: How will the different pH levels found in acid rain effect the development of a bean plant' Materials: 1. Styrofoam containers each with forty slots. 2. Soil. 3. Beans. 4. Water with pH levels of 2, 4, 7, and 10. Procedure: Divided into four teams of students, all of our groups placed soil into each of the forty slot

Space Propulsion RESEARCH I/II LARRY PECAN FINAL REPORT 9-27-98 INTRODUCTION The following is a research project on Space Vehicle Propulsion. It shall consist of four sections, each discussing specific topics. Section One lays out the basic ideas of rocketry. Section Two compares Rocket Propulsion Systems, and shows the basis for the comparison. It also shows how each specific Rocket Sys

Vsepr Theory Valence Shell Electron Pair Repulsion Theory VSEPR Theory is one method that chemists use to predict the shapes of molecules. This theory predicts that electron pairs, whether involved in bonds or as non-bonding pairs, will adopt a geometry in which they maximize the distance from one another in order to minimize repulsions. This will result in a geometry with the lowest

Genetic Testing And Its Implications Probably, applied genetics’ most impacts on society are as a result of genetic tests. In general, genetic tests seek to detect some feature of a person’s genetic constitution. This feature can be a disease causing mutation or a marker DNA sequence used to detect presence of another gene. Obviously these procedures used for testing the status of DNA, R

Definition of Down Syndrome DEFINITION Down syndrome is the most common and readily identifiable chromosomal condition associated with mental retardation. It is caused by a chromosomal abnormality: for some unexplained reason, an accident in cell development results in 47 instead of the usual 46 chromosomes. This extra chromosome changes the orderly development of the body and brain.

Circulatory System Blood must be moved through the body continuously throughout an animal’s life. Every human’s heart consists of muscular chambers capable of strong contractions. Chambers called atria collect blood. Atrial contractions send blood into the ventricles, which are chambers whose contractions circulate blood through the body. Arteries and arterioles are thick-walled v

Phlogiston Kirby L. Foote In 1770, G.E. Stahl, a German physician, proposed a theory that received widespread acceptance. He claimed that all inflammable objects contained a material substance that he called "phlogiston," from a Greek word meaning "to set on fire." When an object burned, it poured its content of phlogiston into the air, and when all its phlogiston was gone, it stopped b

Globalization People around the globe are more connected to each other than ever before. Information and money flow more quickly than ever. Goods and services produced in one part of the world are increasingly available in all parts of the world. International travel is more frequent. International communication is a commonplace. This phenomenon has been titled "globalization." "The Era

Abortin The issue of abortion and its controversies dates as far back as the early Greek period. According to the Greek Philosopher Aristotle he says that “for a society to be healthy, it must kill some kids”. He wrote, “There must be a law that no imperfect or maimed child shall be brought up. And to avoid an excess in population, some children must be exposed [on a trash heap to die]

Mcdns Chapter 22 TOBACCO Lesson 1: Problems For The Tobacco User Objective: To learn the dangers of smoking. Tobacco use is a major cause of illness and death. Being in the company of smokers is risky behavior. TERMS Nicotine – The addictive drug in cigarettes that raises blood pressure and increases heart rate. Stimulant – A drug that increases the action of the central ner

Phlogiston Kirby L. Foote In 1770, G.E. Stahl, a German physician, proposed a theory that received widespread acceptance. He claimed that all inflammable objects contained a material substance that he called "phlogiston," from a Greek word meaning "to set on fire." When an object burned, it poured its content of phlogiston into the air, and when all its phlogiston was gone, it stopped b

Depression A depressive disorder is an illness that involves the body, mood, and thoughts. It affects the way a person eats and sleeps, the way one feels about oneself, and the way one thinks about things. A depressive disorder is not the same as a passing blue mood. It is not a sign of personal weakness or a condition that can be willed or wished away. People with a depressive illness c

Phytochemicals The Food Guide Pyramid recommends between five and 10 servings of fruits and vegetables per day. New research has found that following this recommendation can provide huge health benefits due to phytochemicals found in fruits and vegetables. Phytochemicals are, literally, chemicals produced by plants. These natural, plant produced chemicals give vitamins added benefits.

Malaria Malaria OverviewMalaria is an infection of the blood that is carried from person to person by mosquitoes. The disease has been recognized for thousands of years and once was found almost everywhere except in the most northern areas of the world. Malaria has been wiped out in North America, Western Europe, and Russia. It remains a serious problem in much of the tropical and subtro