Thursday, July 28, 2005
Salk Institute for Biological Studies
Dr. Evans and I had a delightful lunch today with Dr. Rich Murphy, president of The Salk Institute in
Wednesday, July 27, 2005
Plastic RFID Technology
Ever see the TV commercial where a questionable looking man dressed in a trench coat enters a grocery store, begins loading up his pockets with goods, walks out of the store only to be followed by security who simply says, “Sir you forgot your receipt?”
Ultrahigh-Speed Chromatography and Virtual Chemical Sensors for Detecting Explosives and Chemical Warfare Agents
Chromatographic separation of organic compounds is a well-known method of producing time-resolved chemical spectra or chromatograms. Whereas conventional chromatography using 10–100-m columns is slow, often requiring minutes to hours, ultrahigh-speed chromatography with short resistively heated metal columns requires only seconds. The performance of an ultrahigh-speed gas chromatograph using a surface acoustic wave (SAW) resonator to measure the mass of eluted chemical compounds is described. Closed-loop temperature programming of a resistively heated 1-m capillary column at rates as high as 20$^circhbox C$/s produces near real-time, 10-s chromatograms with chemical spectra peak widths measured in milliseconds. Eluted chemicals are physically adsorbed on an uncoated SAW resonator and frequency deviation versus time produces an eluted mass versus time chromatogram. The derivative of frequency versus time produces a mass/unit time chromatogram of column flux, which is used to measure the retention times of eluted compounds. This paper describes the instrument and process where independent database of chemical spectra are produced by indexing the retention time of specific target chemicals (e.g., explosives and chemical warfare agents) to the retention times of n-alkane standards. It is also shown that assigning time windows centered about specific indices can be used to create arrays of nonoverlapping virtual sensors for specific compounds. Repeated high-speed chromatographic measurements enable virtual sensor readings to be updated in near real time. This work clearly proves that arrays of virtual chemical sensors specific to explosive and chemical warfare agents can detect part per trillion levels of these compounds with high probability of detection and low probability of false alarm.
Staples, E.J. Viswanathan, S.
This paper appears in: Sensors Journal, IEEEPublication Date: Aug. 2005Volume: 5, Issue: 4On page(s): 622- 631ISSN: 1530-437X ISBN: Digital Object Identifier: 10.1109/JSEN.2005.850990Posted online: 2005-07-18 08:16:51.0
Tuesday, July 26, 2005
Monday, July 25, 2005
Breakers Tennis / Maria Sharapova
One of my sons is an avid tennis player who is currently being coached by Ronald Agenor. This last weekend we arranged a trip to
Tuesday, July 19, 2005
Surfing in Vogue
My wife handed me an article from Vogue entitled, “Catch the Wave,” which questions could surfing be the new yoga? The author, Abigail Walch, heads for
Friday, July 15, 2005
Sharp Vision Sounds Great
Admit it, more often than not you want to watch something on TV that is different than your friend, roommate, special friend, spouse or child. Sharp Corporation has solved the problem with a two-way viewing-angle liquid-crystal display that sends out pictures viewed separately from different angles. You can sit next to someone and watch your own movie or surf the internet while the other person enjoys their choice of programming. Add to this mix audio technology Woody Norris invented that generates focused sound and you both can share the same space yet be in two different worlds. With a little discipline I guess you can pretend to watch the chick-flick with your girlfriend while focused entirely on the ball game or let your husband watch the game while you watch whatever you want. Isn’t technology wonderful.
Wednesday, July 13, 2005
Sports Engineering: Making the world fun!
This could tie together several schools inside of National University; Sports engineering and Nursing, Media and engineering, Business and engineering. Makes for interesting thoughts; after all, engineers make our world work. Sports engineers make it fun!
Wednesday, July 06, 2005
The Mathematician's Son
Mona: "I want you to marry a girl of my choice."
Son: "I will choose my own bride."
Mona: "But the girl is Bill Gates’ daughter."
Son: "Well, in that case..."
Next Mona approaches Bill Gates
Mona: "I have a husband for your daughter."
Bill Gates: "But my daughter is too young to marry."
Mona: "But this young man is a vice-president of the World Bank."
Bill Gates: "Ah, in that case..."
Finally Mona goes to see the president of the World Bank.
Mona: "I have a young man to be recommended as a vice-president."
President: "But I already have more vice-presidents than I need."
Mona: "But this young man is Bill Gates’ son-in-law."
President: "Ah, in that case....."
Never underestimate the power of mathematics...it is logical.
Attacks – The 12 Minute Virus.
Saturday, July 02, 2005
Stem Cell vs. Stem Sell
Friday, July 01, 2005
Judge Gets Bum Rap in Press
Note: For the record Judge Trentacosta is a “friend” of SOET and has spent his valuable time attending and evaluating some of our students’ CAPSTONE or final projects prior to them graduating. We have found Judge Trentacosta to be thoughtful, thorough, insightful, and most of all fair. This blogger believes that Judge Trentacosta got a bum rap in the press on this one.
One press account....
Over prosecutors’ objections, a judge Tuesday expunged the record of a woman who pleaded guilty to a DUI-related crash in Pacific Beach in 1998, which left a San Diego police officer without most of his left leg.
Judge Robert Trentacosta said that Monica Thayer had completed all the requirements of her six-year probation and paid restitution in full.
Thayer, who was 27 when she struck Officer Dan Toneck on Grand Avenue near Ingraham Street on Aug. 13, 1998, had pleaded guilty to driving under the influence of alcohol causing great bodily injury.
Toneck, a traffic officer who was investigating a separate accident, was retrieving a camera when he was pinned against his patrol car by Thayer’s vehicle around 1:20 a.m.
The officer was rushed to a hospital, but his leg had to be amputated above his knee.
Free iPod Competition
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