New Quartz References for Workplace Safety
Chemists at the National Institute of Standards and Technology (NIST) have developed a new set of reference materials that could contribute to significant improvements// in workplace safety through more accurate measurement of the amount of quartz dust in the air. Crystalline silica or quart...Heraeus Strengthens Medical Components Business
...chnology company headquartered in Hanau, Germany. Heraeus is a global, private company active in the business areas of precious metals, dental health, quartz glass and specialty lighting sources. With revenues exceeding EUR 10 billion and more than 11,000 employees worldwide in over 100 subsidiaries and ass...Aria Analytics Receives JumpStart Investment
...analytical testing. Aria's proprietary technology consists of a replaceable quartz crystal sensor, supporting electronic circuitry, a sample dispensing module..., and proprietary software. As a drop of liquid evaporates on the vibrating quartz crystal sensor, it undergoes distinctive phase changes representing the che...A new technology for cancer screening listens for the signs of cancer
...urface of a thin film of zinc oxide, which allows the device to resonate, or vibrate, at a specific frequency when a current is applied, much like the quartz timing devices used in many clocks and watches. The sensor itself is built on a base of silicon, like a computer chip, and could be mass-produced ...Prions Capacity can Be Aggrevated by Solid Particles
...f soil science who helped direct the new study The Wisconsin team also looked at the ability of the prion to bind to two other common soil minerals: quartz and kaolinite, another common clay mineral. "We found binding of the abnormal protein to all three," says Aiken, "but the binding to montmoril...Large Fluid Intake Won’t Help to Keep Cool for Marathon Runner
...sius and 75-90% relative humidity. The night before the race, the runners ingested telemetric temperature sensors, which contain temperature-sensitive quartz crystal oscillators that vibrate at a frequency relative to its surrounding temperature and communicate the temperature by radio wave to a recording d...Terahertz Imaging Promises To Revolutionize Breast Cancer Treatments
...e infrared and microwave portions of the electromagnetic spectrum. The researchers found that by placing a slice of excised breast tissue on a special quartz plate and exposing it to terahertz light, the light waves reflected from the tissue contained unique information about its state. The researchers were...Occupational exposurer aises respiratory symptoms
...tional levels and smoking habits, there is a clear link between occupational exposures and respiratory symptoms and asthma. In particular, exposure to quartz causes cough symptoms and asbestos exposure is linked with high risk of severe breathlessness and asthma. Slightly over 30 per cent of the participant...DuPont Provides Technology for Washington Hospital Center's Emergency Department
...rfacing to help facilitate improved infection control. Additional DuPont products used in healthcare facilities include: -- DuPont(TM) Zodiaq(R) quartz surface, to provide an extremely strong, nonporous material for desks, tables and many other applications; -- DuPont(TM) Tyvek(R) brand protecti...Gene Chips to Detect CYP Variations: A New Step Toward Customized Medical Therapy.
...llel fashion. To build the microarray, small DNA fragments, also called probes, are anchored and synthesized at specific locations on a small, coated quartz surface. Different probes can be attached to different locations. Each probe is chosen to hybridize selectively with a specific DNA fragment. In th...GENios Plus multi label reader
Description:...nsive instrument, for the price of a simpler, single mode instrument. Absorbance, fluorescence, luminescence Higher sensitivity through high quality quartz fibres Optimized performance for cell based assays (high sensitivity in UV range, top and bottom measurement, customized filter set) ...SPEX SkinSkan Spectro-Fluorometer
Features:... High sensitivity In vivo sampling Fast wavelength scanning Excellent repeatability quartz fibre bundle No need for sample preparation, cuvettes, or adaptation Spectrometer isolates the fluorescence signal from strong scattered backgroun...August 2009 Geology and GSA Today media highlights
...its in which most high Cu grades are associated with small, early, granular quartz veins are found above magmatic sources emplaced to depths of about 4 km or ...w. Such fluid behavior appears to be consistent with characteristics of the quartz vein-related high-grade zones. At greater depths, fluids would exist as one...Early initiation of Arctic sea-ice formation
...he most compelling evidence for ancient sea ice, as they rely on this medium for their survival," said Catherine Stickley. Moreover, their analysis of quartz grain textural characteristics further supports sea ice as the dominant transporter of ice-rafted debris at this time. "It is likely that sea ice ...Microbot motors fit to swim human arteries
... bloodstream, for motors to swim against the blood's current and reach spots difficult to operate upon. Piezoelectricity is most commonly found in quartz watches and gas stoves. It is based on the ability of some materials to generate electric potential in response to mechanical stress. In the case of...January-February GSA Bulletin media highlights
... University of Texas at Austin, Austin, Texas 78712, USA. Pages 247-264. Thick (greater than 2 km), compositionally pure successions of ultramature quartz sandstone (i.e., orthoquartzite) occur among 1.8-1.6 billion year old (Ga, or Giga annum) rock exposures throughout North America and elsewhere around...December 2008 Geology and GSA Today media highlights
...lement data, and gold occurrence, the data demonstrate that metamorphism has gradually homogenized the early sulfur, accompanied by the segregation of quartz and the release of gold from the lattice of early pyrite and its re-precipitation as inclusions in later pyrite. The sulfur isotopic compositions of s...AVS 55th International Symposium & Exhibition, Oct. 19-24
...el resonator (SMR), which has achieved a resolution of approximately 1 femtogram, an improvement of six orders of magnitude over a high-end commercial quartz crystal microbalance. See: http://www.avssymposium.org/paper.asp?abstractID=113 . FAILURE ON THE MICRO-SCALE Microelectromechanical systems...Montana State researchers study spread of lake trout in Glacier National Park
...e, Kintla Lake, Lake McDonald, Logging Lake, Lower quartz Lake, quartz Lake and Rogers Lake. "Quartz Lake was one of ..., Cerulean Lake, Lake Isabel, Lincoln Lake, Middle quartz Lake, Trout Lake, Upper Kintla Lake and Upper Lake...New decontamination system kills anthrax rapidly without lingering effects
...different atmospheric conditions and temperatures, explained Menkara. Test results showed that higher temperatures were more efficient and a capped quartz tube was the best container to hold the powder inside the furnace. Wagner and Menkara also found that adding lithium fluoride (LiF) and reducing the p...AGU journal highlights -- Jan. 28, 2008
...ing exceeds any sustained warm episode in this area for at least the past 1600 years. Title: A millennial perspective on Arctic warming from 14C in quartz and plants emerging form beneath ice caps Authors: Rebecca K. Anderson, Gifford H. Miller, and Stephen B. DeVogel: Institute of Arctic and Alpine R...Nanopillars promise cheap, efficient, flexible solar cells
...e a method called the "vapor-liquid-solid" process to make large-scale modules of dense, highly ordered arrays of single-crystal nanopillars. Inside a quartz furnace his group grew pillars of electron-rich cadmium sulfide on aluminum foil, in which geometrically distributed pores made by anodization served ...Semiconducting nanotubes produced in quantity at Duke
...he nanotubes on a template made of a continuous and unbroken kind of single quartz crystal used in electronic applications. Copper is also used as a growth pr...esulting nanotubes and improved their atomic alignments with the underlying quartz crystal. The resulting nanotubes can only be seen with exceptionally hig...USC researchers print dense lattice of transparent nanotube transistors on flexible base
...this technique over the past three years. The paper contains a description of how the new devices are made. "These nanotubes were first grown on quartz substrates and then transferred to glass or PET substrates with pre-patterned indium-tin oxide (ITO) gate electrodes, followed by patterning of transp...Self-powered devices possible, says Texas A&M researcher
...n the 1880s, piezoelectrics aren't a new concept. They were first used in sonar devices during World War I. Today they can be found in microphones and quartz watches. Cigarette lighters in automobiles also contain piezoelectrics. Pressing down the lighter button causes impact on a piezoelectric crystal that...Nanotubes grown straight in large numbers
...same direction by using the crystal structure of a quartz surface as a template. The availability of forests...ntinuous-and-unbroken "single crystal" surfaces of quartz or sapphire. One team using that method reporte...lline orientation of "stable temperature" (ST)-cut quartz wafers used in electronic applications. "They're l...'High Q' NIST nanowires may be practical oscillators
...cale devices such as carbon nanotubes, and comparable to that of commercial quartz crystals. Because a high Q factor indicates a capacity for stable vibration...ting between 400,000 and 2.8 million times per second. (For comparison, the quartz crystals used in watches usually vibrate about 32,000 times a second.) The ...'Radio wave cooling' offers new twist on laser cooling
...rcuit to cool a 200 x 14 x 1,500 micrometer silicon cantilevera tiny diving board affixed at one end to a chip and similar to the tuning forks used in quartz crystal watchesvibrating at 7,000 cycles per second, its natural resonant frequency. Scientists cooled it from room temperature (about 23 degrees C, o...Glacial records depict ice age climate in synch worldwide
...eology professor Brad Singer, collected samples of quartz and other minerals from boulders found on the cres...es beyond the solar system, strike oxygen atoms in quartz on the surface of the Earth, they break apart, cre...or mass spectrometer to determine how long ago the quartz was exposed to cosmic rays, which can only penetra...EFFECTS OF INSTRUMENT RESOLUTION ON ASSESSMENT OF DNA PURITY
...ommercial sources and were of the highest available purity. Samples were prepared in 5mM KH 2 PO 4 containing 145mM NaCl, pH 7.48. Semi-micro, far-UV quartz cells (~1.5mL) were used for all measurements. RESULTS AND DISCUSSION An example of the spectrophotometric ...Using the SpectraMax Plus for USP Dissolution Calibration (MaxLine Application Note #27)
...nstant, skip Step 1. Step 1 Place a clean quartz or glass cuvette containing distilled water or you...ives the same path-length correction as a glass or quartz cuvette. Step 2 Transfer aliquots of your ... Storing and re-using pre-read data quartz plates are so uniform that it is not necessary to ...LVF Kit: LVF-HL, LVF-CUV-ADP, FHS-LVF, CVD-DIFFUSE from Ocean Optics
Description:...filter features an excellent transmission band (~90%) and blocking band (99.8%). These filters -- with interference coatings applied to 57 mm x 10 mm quartz substrates -- are especially useful for spectrally shaping the excitation energy from broadband sources used for fluorescence. Features: Excellent t...LVF Kit: LVF-UV-HL, LVF-CUV-ADP, FHS-LVF, CVD-DIFFUSE from Ocean Optics
Description:...filter features an excellent transmission band (~90%) and blocking band (99.8%). These filters -- with interference coatings applied to 57 mm x 10 mm quartz substrates -- are especially useful for spectrally shaping the excitation energy from broadband sources used for fluorescence. Features: Excellent t...DMBA300 Pro Digital Infinity Compound from Motic Instruments, Inc.
Description:...built-in high resolution camera chip. As with all BA-300 series microscopes, the digital version meets all user requirements with its impressive 6V30W quartz Halogen Koehler illumination system. The high-resolution camera chip delivers high quality images to the computer screen for processing with our Motic...DMBA300 Digital Infinity Compound from Motic Instruments, Inc.
Description:...built-in high resolution camera chip. As with all BA-300 series microscopes, the digital version meets all user requirements with its impressive 6V30W quartz Halogen Koehler illumination system. The high-resolution camera chip delivers high quality images to the computer screen for processing with our appli...Agilent 7500ce from Agilent Technologies
Description:... for more reproducible analyses. The sample introduction system comprises a quartz torch and a quartz double-pass spray chamber fitted with a highly efficient and precise MicroM...