The Age of Calamitous - University of New Mexico

Predator-Prey Models

• Model expressed as coupled differential equations:" AxBxy dt dx =− CyDxy dt dy =−+ The Lotka-Volterra Model cont." • Example: Rabbits and Lynxes (bobcats):" – Rabbits reproduce at a rate proportional to their population. Let x denote the number (density) of rabbits."

  Model

11 S-expressions, the Syntax of Lisp

Using defun C om nL isp cludea r gb f t- , : - A full range of arithmetic functions, supporting integer, rational, real and complex arithmetic. - A variety of looping and program control functions. - List manipulation and other data structuring functions. - Input/output functions. - Forms for the control of function evaluation.

Fourier Transform Theorems Addition Theorem Shift Theorem ...

Shift Theorem F {f(t −t0)}(s) =e−j2πst0F(s) Proof: F {f(t −t0)}(s) = Z ∞ −∞ f(t −t0)e−j2πstdt Multiplying the r.h.s. by ej2πst0e−j2πst0 =1 yields: F {f(t −t0)}(s) Z ∞ −∞ f(t −t0)e−j2πstej2πst0e−j2πst0dt = e−j2πst0 Z ∞ −∞ f(t −t0)e−j2πs(t−t0)dt. Substituting u =t −t0 and du =dt yields: F {f(t −t0)}(s) = e−j2πst0 Z ∞

Dosimetric Calculations - University of New Mexico

Metal wedge shaped filter is put in beam to tilt isodose curve Angle usually defined at d10, or 50% isodose Types of wedge filters Solid metal Universal Dynamic wedge Isodose curves change with field size Flatness changes with depth

  Calculation, Wedge

Chapter 2: Hazards - Biological, Chemical and Physical

need. Some preservation methods, such as drying or smoking, control the water or nutrients in food, making these essential elements unavailable to microorganisms. Overhead 5 Different microorganisms respond differently to air. Like most plants and animals, many microorganisms need air to live and will die or stop growing if deprived.

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Medicinal Plants at Risk - Center for Biological Diversity

Preservation of Medicinal Herbs (NCPMH), other herb societies, and scientists also track, maintain lists of, and work to conserve imperiled medicinal species worldwide. Habitat Destruction As of 1995, less than 1 percent of all tropical plant species had been screened for potential pharmaceutical applications (World Atlas of Biodiversity, 1995).

  Preservation

Guide 1 Principles of Home Canning

Ice fish and seafoods after harvest, eviscerate immediately, and can them within 2 days. Maintaining color and flavor in canned food To maintain good natural color and flavor in stored canned food, you must: • Remove oxygen from food tissues and jars, • Quickly destroy the food enzymes,

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