General • The Rational Formula is one of the most frequently used urban hydrology methods in Malaysia. It gives satisfactory results for small catchments only • The formula is: C . y It . A Qy = 360 where‚ Qy = y year ARI peak flow (m3/s) C= dimensionless runoff coefficient yI t = y year ARI average rainfall intensity over time of concentration‚ tc ‚ (mm/hr) A= drainage area (ha) Or Q=CiA i = average rainfall intensity (in/hr)equals to tc A = catchment area
Premium Hydrology Surface runoff Soil
IEOR E4707: Financial Engineering: Continuous-Time Models c 2009 by Martin Haugh Fall 2009 Black-Scholes and the Volatility Surface When we studied discrete-time models we used martingale pricing to derive the Black-Scholes formula for European options. It was clear‚ however‚ that we could also have used a replicating strategy argument to derive the formula. In this part of the course‚ we will use the replicating strategy argument in continuous time to derive the Black-Scholes partial
Premium Option Options Call option
USING SUITABLE EXAMPLES FROM KENYA‚ EXAMINE THE CAUSES AND EFFECTS OF WATERSHED DEGRADATION AND SUGGEST POSSIBLE INTERVENTION MEASURES TABLE OF CONTENTS CAUSES‚ EFFECTS AND SOLUTIONS TO WATERSHED DEGRADATION PREAMBLE Page 4 1. INTRODUCTION Page 4 - 6 2. Causes of Watershed Degradation Page 7 2.1 Land degradation 7 - 8 2.2 Deforestation 8 2.3 Removal of vegetation 8 2.4 Shifting cultivation without adequate fallow periods 9 2.5 Overgrazing
Premium Soil Water pollution Agriculture
CHAPTER 2 RECOVERY EFFICIENCY OF AN EOR METHOD 2.1 SWEEP EFFICIENCY The overall recovery factor (efficiency) RF of any secondary or tertiary oil recovery method is the product of a combination of three individual efficiency factors as given by the following generalized expression: Fluid properties influence all three components of recovery efficiency. 1. Viscosities are found in the definition of mobility ratio‚ which affects areal and vertical sweep efficiency‚ including viscous fingering. 2
Premium Liquid Water Viscosity
Artisan Paint Operation marking menu b Modify upper brush radius Shift+B Modify lower brush radius Ctrl+b i Edit Paint Effects template brush settings Modify Artisan brush Stamp Depth m Modify Max Displacement (Of Sculpt Surfaces and Sculpt Polygons Tool) n Modify Value / Switch to pick colour mode ’ Select cluster mode (Of Paint Weights Tool ) 8 Open Paint Effects panel o+LMB Poly Brush Tool marking menu o+MMB Poly UV Tool marking menu
Premium Natural selection
Problem- How do variables temperature and surface area affect the rate of reaction occurring in the enzyme? Information- Enzymes are proteins that act as biological catalysts. They speed up chemical reactions that take place in cells. Enzymes can be found in both liver and potato. They provide a site where reactants can be brought together to react. These reactants are called substrates that fin into the enzyme. The changing of heat‚ surface area‚ chemicals‚ and pH will denature the shape
Premium Chemical reaction Reaction rate Liver
Introduction We are going to do an experiment to see how surface area effects the rate of reaction when added to hydrochloric acid. I will add calcium carbonate (marble chips) to hydrochloric acid. When calcium carbonate is added to hydrochloric acid a reaction takes place. The solution fizzes and gives off the gas carbon dioxide. I will collect this gas in a gas syringe and will time how long it takes for the reaction to produce 100cm3 of carbon dioxide. CaCO3 +2HCL Co2 +CaCl2 +H2O CalciumHydrochloricCarbonCalciumWater
Premium Carbon dioxide Calcium carbonate Surface area
industrial areas and from agricultural land and mining operations makes its way back to receiving waters (river‚ lake or ocean) and into the ground. STORMWATER Stormwater is a point source that contributes to water pollution. Because impervious surfaces (parking lots‚ roads‚ buildings‚ compacted soil) do not allow rain to infiltrate into the ground‚ more runoff is generated than in the undeveloped condition. This additional runoff can erode watercourses (streams and rivers) as well as cause flooding
Premium Water pollution Water Surface runoff
dumped into exploration holes dug out to map mining areas. After the mining had stopped in the 1960’s‚ the mines flooded and these waste materials began to mix in with the rest of the water that filled the mine. Eventually‚ this water reached the surface and formed springs of contaminated water. “Highly contaminated acid mine water began flowing from the mine shafts in Ottawa County Oklahoma in 1979‚ just as predicted by the miners during the 1950’s and in 1977 by S.J. Playton of the USGS. This
Premium Groundwater Water Surface runoff
Hydrogen peroxide‚ size of Potato‚ concentration of Hydrogen Peroxide Hypothesis I predict that the breakdown of Hydrogen Peroxide will be quicker when the surface area is increased. If you cut the same size piece of potato into smaller pieces‚ I believe‚ the breakdown will be faster. I predict that an increase in surface area will result in an increase in kinetic energy. Since the size of the area increases‚ I think that more oxygen will be released from the Hydrogen Peroxide and
Premium Hydrogen peroxide Oxygen Chemical reaction