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Accent on Applications News
Measuring Oceanic Iron Content in a New Light
Sep 1, 2006 — Iron isn’t just the stuff of nails, girders or rusting cans. It also plays a role in climate and in the ocean’s food chain. In regions of water far removed from iron-bearing soil dust, dissolved oceanic iron is a limiting factor in the growth of phytoplankton, which are central not only to the ocean’s food chain, but also to the global climate. To understand more about the roles played by phytoplankton, researchers would like to know how much iron is contained in seawater in iron-poor regions,...
Testing (and Tasting) Beer on Sight
Sep 1, 2006 — Kenneth S. Suslick was not under the influence, even though he was discussing an optical beer-testing technique that essentially tastes and smells a substance visually. Suslick, the Marvin T. Schmidt professor of chemistry at the University of...
Digital Imaging Enables Researchers to Take a Kiln’s Temperature Without Getting Burned
Aug 1, 2006 — Carl Duchesne, a professor of chemical engineering at Université Laval in Quebec City, and graduate student Gerard-Silard Szatvanyi have developed a method that promises to get around measurement problems associated with taking the temperature of...
Interferometry Measures a Bubble Without Bursting It
Aug 1, 2006 — Guy Ropars, a researcher at Centre National de la Recherche Scientifique (CNRS) at Université de Rennes 1 in France, has been blowing soap bubbles. He does so to measure the thickness of the film that is the bubble’s skin, which varies over time and...
Portable Fiber Laser Cleans Ancient Tomb
Aug 1, 2006 — The conservation of an Egyptian tomb is a delicate, painstaking process. Dirt must be removed without damaging the fragile surfaces of the walls. In some cases, the grime is attached so firmly to the surface that even conventional hand-cleaning...
IR Spectroscopy Tests Charcoal for Tennessee Whiskey
Jul 1, 2006 — To enable distillers of Tennessee whiskey to produce a better and more uniform product, scientists at the University of Tennessee in Knoxville and at the US Department of Agriculture Forest Service’s Southern Research Station in Pineville, La., are...
Miniaturized Airborne Instruments Provide Maximum
Atmospheric Data
Jul 1, 2006 — Veerabhadran Ramanathan, a professor of applied ocean sciences and of atmospheric sciences and director of the Center for Atmospheric Sciences at Scripps Institution of Oceanography at the University of California, San Diego, in La Jolla, is...
Fluorescence Helps Measure Reactive Oxygen Species in Cigarette Smoke
Jun 1, 2006 — The main hazard of smoking cigarettes is that it has been linked to major diseases: cancer, cardiovascular disease, emphysema and stroke among them. The connection between smoking and these diseases is oxidative stress, a condition in which lipids,...
Spotting Live Bugs Keeps a Cleanroom Clean
Jun 1, 2006 — When it comes to keeping pharmaceutical cleanrooms clean and profitable, it is important to be a good judge of the quick and the dead. Of the two classes of particles that contaminate cleanrooms, the quick are the more troublesome because a single...
Combined Upright/Inverted Microscope Offers New Functionality
May 1, 2006 — For University of Pittsburgh scientists investigating the molecular signaling between compartments of a neuron’s dendrites and the accompanying cellular modifications that play a part in long-term memory, traditional microscopes were inadequate. To...
Optical Method Characterizes Flow of Oil and Water
May 1, 2006 — The fact that oil and water don’t mix causes problems for the petroleum industry. The production of offshore oil is accompanied by the production of free water, with the ratio of the two varying with the oil field, its maturity and other factors. In...
Digital Camera Reads Chromatography Plates
Apr 1, 2006 — Thin-layer chromatography is a standard laboratory method in chemistry used to identify compounds, assess purity and track a reaction’s progress. It involves an adsorbent film on a glass plate or other carrier on which samples of interest are...
Maldi-Tof Used to Examine Renaissance Art
Apr 1, 2006 — Whereas others may look at a work of fine art and see a painting, Cécile Cren-Olivé, a research assistant professor in analytical chemistry at the Université des Sciences et Technologies de Lille 1 in Villeneuve d’Ascq, France, sees proteins....
Thermoreflectance Spots Hot and Cold Sites on Integrated Circuit
Apr 1, 2006 — When it comes to integrated circuit failure analysis, Caesar Saloma of the National Institute of Physics at the University of the Philippines in Quezon City doesn’t blow hot and cold. He’s counting on the circuits to do that. Saloma, a professor...
Fluorescence Spectroscopy Analyzes Cheese
Mar 1, 2006 — Exposed to too much light and oxygen, cheese can form off-flavors, undergo changes in color and lose nutritional value. Cheese makers and distributors, therefore, search for a combination of product characteristics, storage conditions and packaging...
Fluorescence Technique Analyzes Fluid Mixing
Mar 1, 2006 — When chemical engineers talk about a good mixer, they probably are describing a reactor in which liquids are brought together to manufacture a product. Reactant mixing has a large impact on the quality of the products and yields of the process. In...
Laser Technique Facilitates Mass Spectrometry of Petroleum
Feb 1, 2006 — For those feeling pain at the pump and hoping for less expensive fill-ups, the news from the US Department of Energy in December was not good. The department has projected oil prices to remain well above $50 a barrel for the years to come, signaling...
Tracking Where the Chips Fall
Feb 1, 2006 — Where others see a work of art, Thomas J. Tague Jr. sees an opportunity — and a challenge. Art conservators, museum directors, interested individuals and sometimes the general public want to know if a painting or an antiquity is real or fake....
Velocimetry Follows the Flow for Clean Water
Feb 1, 2006 — To avoid the fate of Coleridge’s ancient mariner, Fariborz Taghipour wants to make sure that there’s always a drop to drink. Taghipour, an assistant professor in chemical and biological engineering at the University of British Columbia in Vancouver,...
Fluorosensor Reveals Seafloor Habitats
Jan 1, 2006 — Robert C. Aller likes to muck about when he works. He studies worms, clams and other animals that live in aquatic sediments. These creatures create complex, three-dimensional chemical microenvironmental and transport path networks that Aller, a...
Lasers Listen to Vortices from Airplane Wing Tips
Jan 1, 2006 — At Flight Safety Technologies Inc. in Mystic, Conn., senior vice president for technology Neal Fine is working to ease airport congestion while increasing safety. His company is using a laser-based system dubbed Socrates to listen for the sound of a...
Spectroscopy Reveals Details of the Hope Diamond
Jan 1, 2006 — The Naval Research Laboratory in Washington has been synthesizing diamonds since the mid-1980s, hoping to use them as thermal, optical and electrical semiconducting materials for a variety of US Department of Defense applications. Because high...
Automated Optimization Techniques Improve Illumination
Dec 1, 2005 — A group at the Institute of Solid State Physics at Technische Universität Berlin in Germany is using a metallorganic chemical vapor deposition reactor for the fabrication of a variety of semiconductor heterostructures. The wafers under fabrication...
Dual-Luminophore Paint Detects Pressure and Temperature
Dec 1, 2005 — Wind tunnels, University of Florida, dual-sensor film that measures pressure and temperature simultaneously. And the approach could be applied elsewhere. “The methods are widely applicable to any application that uses luminescence to determine a...
Fiber Lasers Used in Medical Stent Manufacturing
Dec 1, 2005 — The use of medical stents is now common practice in minimally invasive surgery. Inserted into the body through a catheter and left in place, they are employed in procedures such as the treatment of peripheral vascular disease, in which the stent is...
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August 2024
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