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Concentration, Amount And Counting By Weighing, Julian Tyson

Science and Engineering Saturday Seminars

Concentration, Amount and Counting by Weighing

UMass Amherst STEM Ed Institute Saturday Workshop 2/3/2018

Julian Tyson, Professor Emeritus, Department of Chemistry. Tyson@chem.umass.edu

Session 1. Introductions.

Ice-breaker: The elementarity contest.

Setting the scene: “How much arsenic do we eat?” Why do we want to know? The Consumer Reports articles (Nov 2012 and Nov 2014)

Dealing with really big and really small numbers.

Session 2. Amount, concentration

Solids, liquids and gases. The “parts per” concept.

Session 3. Counting by weighing

The count equation. Rice grains (the bottle content problem), atoms and molecules.. Chemical formulas and balanced chemical expressions. The numbers in the …

Lessons Learned From Archery: How To Focus And Hit The Bull’S-Eye In Life, Bob Porter

UCF Forum

My grandfather started teaching me how to use a bow and arrow when I was about 6 years old. He taught me using a longbow made out of yew, which is a very specific type of wood used to make these bows.

With So Much Debate Going On About Flouride, Will You Answer Some Questions?, Georgia Lauritzen, Deloy Hendricks, Ann Baker

All Archived Publications

No abstract provided.

How Can I Concentrate Better When I Study?, Terry Teigeler

All Archived Publications

No abstract provided.

G86-775 Prussic Acid Poisoning, Norman Shcneider, Bruce Anderson

University of Nebraska-Lincoln Extension: Historical Materials

Prussic acid poisoning and its treatment are discussed in this NebGuide, along with methods to reduce its occurrence.

Sudangrass, forage sorghum, and sorghum-sudangrass hybrids are often used for summer pasture, green chop, hay, or silage. Under certain conditions, livestock consuming these feedstuffs may be poisoned by prussic acid (HCN).

Exposure to excessive prussic acid--also called hydrocyanic acid, hydrogen cyanide, or cyanide--can be fatal. However, producers can manage and feed their livestock to avoid problems with prussic acid.

G81-562 Guidelines For Using Pipewick And Other Selective Applicators, William E. Lueschen, Alex R. Martin, John D. Furrer

University of Nebraska-Lincoln Extension: Historical Materials

The use of selective applicators is being rapidly adopted by farmers to supplement their weed control programs. A low-cost method of removing tall, escaped weeds from short stature crops, selective application is also environmentally appealing since the herbicide is applied only to the target weeds and thus only small amounts of herbicides are used.

There are three basic types of applicators available: ropewicks, recirculating sprayers (RCS), and carpeted rollers. This NebGuide discusses each applicator and how it can be used on the farm.