"Desalination and Water Purification, Spring 2009"
" Water supply is a problem of worldwide concern: more than 1 billion people do not have reliable access to clean drinking water. Water is a particular problem for the developing world, but scarcity also impacts industrial societies. Water purification and desalination technology can be used to convert brackish ground water or seawater into drinking water. The challenge is to do so sustainably, with minimum cost and energy consumption, and with appropriately accessible technologies. This subject
STS-135: Rendezvous Pitch Maneuver
On July 10, 2011, space shuttle Atlantis performed the nine-minute Rendezvous Pitch Maneuver, or "backflip." With Commander Chris Ferguson at the helm, Atlantis rotated 360 degrees backward to enable space station crew members to take high resolution digital pictures of the shuttle's heat shield.
El Nino Sea Surface Temperature, Height, and Wind Anomalies: January 1997 through October 1998
Sea surface height anomaly (SSH) for January 1997 to October 1998. A 3-D straight-on view with arrows showing sea surface wind anomalies.
Verzekerd tegen bliksemschade?
At the end of this unit you can respond to a claim for compensation for the damage caused by a thunderstorm.
The World of the Dragon
What is happening in the East today, especially in China and Japan, disrupts simple notions of East vs. West and challenges Western accounts of globalization. This concluding program draws attention to developments in the East that have potential consequences for the West and examines the role that "overseas Chinese" play in the transnational network of the Chinese business world. (27:37)
Our Amazing, Powerful Sun
The purpose of this lesson is to introduce the students to the Sun. They explore various aspects of the Sun including its composition, its interior workings, and its relationship to the Earth.
Helpful Hints for Field Sketching
This online article, from Biodiversity Counts, offers insight into the task of field sketching. After discussing the difference between seeing and observing, the article offers tips designed to help make students better at observational rendering. The six hints discussed are proportions, perspective, volume, simplifying, practicing a lot, and having fun.
Learn Hindi Daily Show – Lessons from 2009 that have not been rated
Today I want to bring to your attention all the lessons from 2009 that have not received a rating. There are only 3!! Please take a moment to listen to...
Blue Plants: Transgenic Plants with the GUS Reporter Gene
An investigative laboratory developed for the introductory biology curriculum using transgenic plants is presented in this chapter. The transgenic Arabidopsis plants we use contain the GUS reporter gene under the control of the cor15a gene promoter, which responds to cold stress. Following induction by cold or other environmental signals, the gusA gene will respond by producing the enzyme beta-glucuronidase (GUS). When plant tissue is incubated with the chromogenic substrate X-gluc, those tissue
Digital Library Object - Whither conscription in Singapore.
Link To Full Record
How Do Things Fall? Activity
Students learn that it is incorrect to believe that heavier objects fall faster than lighter objects. By close observation of falling objects, they see that it is the amount of air resistance, not the weight of an object, which determines how quickly an object falls.
Visit Historic Natchez-Vicksburg in Mississippi
The Mississippi River, in many respects, defines this state. The oldest permanent community on the Mississippi River, Natchez, was settled by the French in 1716. Discover the Historic Natchez-Vicksburg area in Mississippi. Run time 09:54.
What is Temperature?
Temperature is the measure of the average kinetic energy of the particles in an object. Temperature in science is measured in Celsius or Kelvin. (04:55)
This worksheet contains a hundred square and a number of addition sums.
Writers on Writing
In this video from ThinkTV Dayton, three successful Ohio authors tell you about their writing process.
Logs Homework -- Properties of Logarithms
This module provides sample problems which develop concepts related to properties of logarithms.
Norway still reels 10 days after massacre
July 31 - Norwegians pay their respects outside Oslo cathedral to the victims of a bomb and shooting attack that traumatised the nation. Simon Hanna reports.
Henry David Thoreau - At Walden Pond
This 3:44 video is an interview with a teacher about how Walden lived and what he wrote. Between 1845 and 1847, Henry David Thoreau decided to spend two years in a small cabin - located in the woods in Concord, Massachusetts, near Walden Pond - to see what it would be like to withdraw from the constant demands and "busyness" of daily life.
As he writes in Walden:
I went to the woods because I wished to live deliberately, to front only the essential facts of life, and see if I c
The Color "B-L-U-E" song
This is a good resource to introduce colors to the early childhood classroom. This video introduces the color and color word blue. Some of the lyrics include "The big sky is blue. The ocean is too. Hi! Ho" B-L-U-E spells blue". This would also be a good resource for ELL students and special needs children. (1:27)
Developmental Strategies and Mechanisms
This is a general introduction to cell structure and function, molecular and organism genetics, animal development, form and function. Intended for biological sciences majors, but open to all qualified students.