Posted by tropin on January 1, 2012
CHOCOLATE CHIP COOKIES
532.35 cm3 gluten
4.9 cm3 NaHCO3
4.9 cm3 refined halite
236.6 cm3 partially hydrogenated tallow triglyceride
177.45 cm3 crystalline C12H22O11
177.45 cm3 unrefined C12H22O11
4.9 cm3 methyl ether of protocatechuic aldehyde
Two calcium carbonate-encapsulated avian albumen-coated protein
473.2 cm3 theobroma cacao 236.6 cm3 de-encapsulated legume meats (sieve size #10)
To a 2-L jacketed round reactor vessel (reactor #1) with an overall heat transfer coefficient of about 100 BTU/F-ft2-hr, add ingredients one, two, and three with constant agitation.
In a second 2-L reactor vessel with a radial flow impeller operating at 100 rpm, add ingredients four, five, six, and seven until the mixture is homogenous.
To reactor #2, add ingredient eight, followed by three equal volumes of the homogenous mixture in reactor #1. Additionally, add ingredient nine and ten slowly, with constant agitation. Care must be taken at this point in the reaction to control any temperature rise that may be the result of an exothermic reaction.
Using a screw extrude attached to a #4 nodulizer, place the mixture piece-meal on a 316SS sheet (300 x 600 mm). Heat in a 460K oven for a period of time that is in agreement with Frank & Johnston’s first order rate expression (see JACOS, 21, 55), or until golden brown.
Once the reaction is complete, place the sheet on a 25C heat-transfer table, allowing the product to come to equilibrium.
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Posted by tropin on December 4, 2011
Pendulum Waves
What it shows: Fifteen uncoupled simple pendulums of monotonically increasing lengths dance together to produce visual traveling waves, standing waves, beating, and random motion. One might call this kinetic art and the choreography of the dance of the pendulums is stunning! Aliasing and quantum revival can also be shown.
How it works: The period of one complete cycle of the dance is 60 seconds. The length of the longest pendulum has been adjusted so that it executes 51 oscillations in this 60 second period. The length of each successive shorter pendulum is carefully adjusted so that it executes one additional oscillation in this period. Thus, the 15th pendulum (shortest) undergoes 65 oscillations. When all 15 pendulums are started together, they quickly fall out of sync—their relative phases continuously change because of their different periods of oscillation. However, after 60 seconds they will all have executed an integral number of oscillations and be back in sync again at that instant, ready to repeat the dance.
Setting it up: The pendulum waves are best viewed from above or down the length of the apparatus. Video projection is a must for a large lecture hall audience. You can play the video below to see the apparatus in action. One instance of interest to note is at 30 seconds (halfway through the cycle), when half of the pendulums are at one amplitude maximum and the other half are at the opposite amplitude maximum.
Video : Pendulum_Waves
Comments: Our apparatus was built from a design published by Richard Berg 1 at the University of Maryland. He claims their version is copied from one at Moscow State University. Dr. Jiri Drabek at Palacky University in the Czech Republic has informed us that it was originally designed and constructed by Ernst Mach, professor of mathematics in Praha and Vienna around the year 1867. The demonstration is used in the Czech Republic under the name “Machuv vinostroj” — the “Wavemachine of Mach.” The apparatus we have was designed and built by Nils Sorensen.
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Posted by tropin on December 2, 2011
The In-service will be held on Mon Dec 5 at FEC in yorkton.
The purpose of this workshop is to improve the digital literacy skills of the participants and develop 21st Century classroom practices at the high school level. Topics include: collaboration tools in the classroom (google docs, wikis), Smartboard lesson development, moodle, web 2.0 tools, screencasting, blogging and much more!
Link to the website is :
http://blogs.gssd.ca/highschool/
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Posted by tropin on October 10, 2011
- Keep vid is still free, disregard downloading the program. Of course they have a pay for use option now but the free option is good enough.
- Just put link in box as before and the program will work.
- After you add the youtube url, click on the download button on the right side.
- Then run the keepvid downloader
- Then choose the mp4 version to download.
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Posted by tropin on September 28, 2011
Get a chicken, hijack its DNA, and stand back.
People have told Jack Horner he’s crazy before, but he has always turned out to be right. In 1982, on the strength of seven years of undergraduate study, a stint in the Marines, and a gig as a paleontology researcher at Princeton, Horner got a job at Montana State University’s Museum of the Rockies in Bozeman. He was hired as a curator but soon told his bosses that he wanted to teach paleontology. “They said it wasn’t going to happen,” Horner recalls. Four years and a MacArthur genius grant later, “they told me to do whatever I wanted to.” Horner, 65, continues to work at the museum, now filled with his discoveries. He still doesn’t have a college degree.
What we’re trying to do is take our chicken, modify it, and make a chickensaurus.
Read the rest of this entry »
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Posted by tropin on August 29, 2011
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Posted by tropin on June 7, 2011
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Conference Session : Wikis in the Classroom
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Site / Location: Yorkton Regional High School – A7 Date: May 24, 2011 – 10:55 AM to 12:00 PM
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To see the Wiki presentation word document, go to Wiki Page on this Blog.
The presentation word document is at the bottom of the page.
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