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Simple microfluidic devices now have valves

04-04-2014

Researchers at the National Institute of Standards and Technology (NIST) have added yet another innovation—miniature valves—to their ever-growing collection of inexpensive, easy-to-manufacture and highly efficient microfluidic devices made from plastic films and double-sided tape. Traditionally, ...

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Real-life CSI: What can investigators really tell from gunshot residue?

28-03-2014

The popular TV series "CSI" is fiction, but every day, real-life investigators and forensic scientists collect and analyze evidence to determine what happened at crime scenes. In a study published in the ACS journal Analytical Chemistry, scientists say they have developed a more rapid and ...

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Nanotube coating helps shrink mass spectrometers

27-03-2014

Nanotechnology is advancing tools likened to Star Trek's "tricorder" that perform on-the-spot chemical analysis for a range of applications including medical testing, explosives detection and food safety. Researchers found that when paper used to collect a sample was coated with carbon nanotubes, ...

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A faster way to flag bacteria-tainted food — and prevent illness

21-02-2014

The regular appearance of food poisoning in the news, including a recent event that led to the recall of more than 33,000 pounds of chicken, drives home the need for better bacterial detection long before meats and produce make it to the dinner table. On the horizon is a new approach for pathogen ...

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Suburban sprawl accounts for 50 percent of US household carbon footprint

24-01-2014

Many U.S. cities are taking steps to grow urban centers in an attempt to reduce greenhouse gas emissions. But a challenge is the significant carbon footprint of spacious suburban living, which in many areas, may be cancelling out these efforts. The report, appearing in the ACS journal ...

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David J. Srolovitz Awarded 2013 Materials Theory Award

University of Pennsylvania professor receives award for exceptional advances in theoretical materials science

20-11-2013

The Materials Research Society (MRS) has named David J. Srolovitz, University of Pennsylvania, to receive its Materials Theory Award for his “decisive and highly influential contributions to the theory and simulation of microstructure, morphological evolution, mechanical behavior, and the ...

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Ion Chromatography Method Quantifies Ammonia in Tobacco Smoke

16-09-2013

Thermo Fisher Scientific has developed an ion chromatography(IC)-based method for the accurate determination of ammonia in tobacco smoke. Ammonia is on the U.S. Food and Drug Administration’s (FDA) list of toxic compounds in tobacco smoke. Application Note 1054: Determination of Ammonia in ...

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Hydrazine has nowhere to hide

29-08-2013

Scientists in the US and Korea have developed a highly sensitive fluorescent probe that can detect a toxic chemical used in industrial processes in a variety of different environments – including living cells. Hydrazine is used in in many different applications – as the gas-forming agent in air ...

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Raman keeps lipstick evidence in the bag

14-08-2013

Scientists at the University of Kent, UK have used Raman spectroscopy to identify different types and brands of lipstick on crime scene evidence without having to remove it from the evidence bag. Lipstick marks can link someone to a crime scene and can be crucial for establishing physical contact ...

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Detecting efficient chiral compound catalysts

23-07-2013

Scientists in the United States have developed a sensor that could be used to help develop more efficient catalysts for producing chiral compounds in industry. In research they describe the preparation of inexpensive palladium complexes that provide a sensitive UV signal in the presence of some ...

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