Monthly Archives: October 2012

29 Oct

Index of Refraction

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Refractive Index, n, is the ratio of the speed of light in a vacuum and the speed of light in a material.  Refractive index is commonly used as a measure of density for solids and liquids.  The most common use … Continue reading

25 Oct

Growing Mini Tumors

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A couple of weeks ago, my boss shared this great article about improved treatment of patient cancers, by growing “mini tumors” in Petri Dishes.  The challenge being, how to keep ordinary and cancerous cells alive indefinitely in a laboratory.  The concept is … Continue reading

22 Oct

DNA Testing

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DNA isolation is not the great mystery it once was.  There are now many kits for the isolation of various types of DNA and RNA.  Plasmid isolation kits are available from several suppliers.  Genomic DNA kits isolate DNA from yeast … Continue reading

19 Oct

Reptiles and Salmonellosis

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Did you know that there is a direct link between reptiles and Salmonellosis?  Salmonellosis is an infection caused by bacteria in the genus Salmonella.  This type of germ was discovered by an American scientist with the last name of Salmon, … Continue reading

18 Oct

Laboratory Bench Underpads & Liners

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So, if you reading my blog about Bench Underpads and Liners, I’m wondering if you have the same reaction as I did when this item was first brought to my attention? My first thoughts were that they kind of reminded me of diapers.  I … Continue reading

15 Oct

Graphene

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There are several ways to produce Graphene in the laboratory.  One way is  by heating a Silicon Carbide,  wafer to >1100°C in a furnace promoting epitaxial growth of the Graphene on the SiC wafer.  Another is chemical vapor deposition, CVD, … Continue reading

11 Oct

First Aid Kit Policy

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First Aid Kits are one of those things we all seem to take for granted until you actually need it.  I recently came across information regarding the Policy and Guidelines for laboratories and the Guidelines for providing adequate supplies.  OSHA Medical Service … Continue reading

08 Oct

Carbon Nanotube

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How do you make a carbon nanotube?  One way is by chemical vapor deposition in a tube furnace.  Metal catalyst particles such as iron, cobalt, or nickle, or a combination are heated in the furnace to 700°C (1300°F).  A process … Continue reading

05 Oct

Salmonella Outbreak

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You may want to think twice about eating that peanut butter and jelly sandwhich after you read about the salmonella outbreak that has affected 35 people in 19 states.  Salmonella Bredeney is the strain of bacteria that can be traced back … Continue reading

04 Oct

Tube Rotators

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Fixed and Variable Speed Rotators.  I don’t know about you, but they kind of remind me of a Ferris Wheel.  All kidding aside, unlike a centrifuge, rotators, which are also known as Tissue Culture Rotators, provide an ideal and effective … Continue reading