Group dynamics

A water jet cutter, commonly called a water jet, is a tool that uses a very high-pressure jet of water or a mixture of water and an abrasive to cut a wide variety of materials. A water jet that does not use abrasives is referred to as a pure water jet or water-only cutting [1]. For a pure water jet (Figure 1) the water is pressurized to the range of 20 - 94 ksi, 138 - 649 MPa at the inlet and forced through an orifice with a diameter of between 0.25 - 4 mm creating a very thin high velocity…

of elasticity and the theory of heat conduction. The two basic branches of elasticity, namely elastostatic and elastodynamics are developed under different thermodynamic assumptions. The problems of static are regarded as isothermal and those of dynamics are said to be adiabatic. Thermoelasticity unifies these two fields. The effect of the temperature field on the strain field is not a one-way phenomenon. The strain field also affects the temperature…

2 Literature Review 2.1 Porous Materials For the purposes of this report, porous materials is defined as a medium containing voids[2]. The skeletal material is called the matrix and the voids are filled with a fluid (usually air). The physical properties of the materials can be characterised by bulk, macroscopic and microscopic properties. Most of which have an impact on the acoustical performance of the material. Sound energy is lost in porous materials when it is transformed into heat. This is…

Viscosity and Flow Rate by Hasnain S. and Vinh T. What is Viscosity: Viscosity is the measurement of how fast a fluid will flow. In other words, it is the “thickness” or “thinness” of a fluid. The internal friction or resistance it has as well as the temperature in which the fluid is at determines the viscosity of the substance as well. If there is more internal resistance or friction, then the particles of the substance won’t slid past each other as easily and therefore make the substance…

OVERVIEW Four ablations will be done in ex vivo bovine for each flow rate. There will be three different flow rates: 0 mL/min, 860 mL/min, and 1000 mL/min. These flow rate were chosen based on hepatic flow rates of humans in the supine position (Brown et al. 1989; Leen et al. 1992). Each ablation will be performed at 40 watts for 2 minutes for a total of 12 ablations. The average area of a 30ºC and 50 ºC contour at the end of the ablation will be used to characterize the size of the ablation…

I. Summary A. Why we exist 1. The Harris County Permit Office began issuing development permits in 1973. 2. Permits are issued in accordance with Harris County regulations to ensure that unincorporated areas of Harris County are able to qualify for flood insurance through the National Flood Insurance Program. 3. The residential department is diligently working to minimize the loss of life and property from high water events (i.e. Floods, Tropical Systems, and etc.) 4. The importance of flood…

Does the number of tiny holes in the parachute affect its descension rate Introduction This experiment will determine if the number of tiny holes in the parachute effect will its descension rate.This science of this project includes newtons second law, drag force, gravity, velocity and terminal velocity . This experiments main focus is air resistance. Project rationale/ purpose In this experiment I will test if having small holes in a parachute help the parachute from falling as fast. This…

How many people die on a roller coaster each year? 50? 100? 200? Shockingly, only fifty-two deaths occurred between 1990 and 2004 (Inquisitr). Amusement parks are actually safer than we think. The chance of an injury or death at an amusement park is extremely low. In fact, according to the International Association of Amusement Park Attractions, only one in every 250 million riders experience a death caused by a ride at an amusement park. The International Association of Amusement Park…

Architectural elements harmonize and organize architecture. Without order confusion can set in, using architecture elements and principles there will be order and harmony. An architect uses these methods to create an emotional and balanced design. Case studies chosen to analyze are Howard House in West Pennant, Nova Scotia designed by Brian MacKay-Lyons, second chosen was the B2 House in Ayvacik, Turkey by Han Tumertekin. Both buildings have elements and principles of architecture that will we…

Understanding of multiplication facts is essential to have down by fourth grade. Knowing the times tables and being able to fluently recall immediately is needed throughout the entire year because of PA Mathematics Standards beginning with multiplication of multidigit numbers. There were students in my fourth grade classroom that had yet to be fluent with their multiplication facts, and it was necessary for them to have it down, for everyday mathematics and for the PSSA’s. I discussed with my…