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Plastic fantastic: UV recycling

Date: Dec 1, 2014

Author: David Bradley

A new type of degradable polymer made from a fructose-derived monomer can be broken down when exposed to ultraviolet light and release material that can be recycled into new polymer, according to US researchers.

Read More thumbnail image: Plastic fantastic UV recycling

Journal Highlight: A multifrequency virtual spectrometer for complex bio-organic systems: Vibronic and environmental effects on the UV/vis spectrum of chlorophyll a

Date: Nov 10, 2014

Author: spectroscopyNOW

The UV/vis spectra of chlorophyll a have been simulated by easy-to-use and effective procedures to illustrate the affordable feasibility of computing the vibrational and environmental effects on the spectral line shapes of large systems.

Read More thumbnail image: Journal Highlight A multifrequency virtual spectrometer for complex bio-organic systems Vibronic and environmental effects on the UVvis spectrum of chlorophyll a

Aligning spacecraft: Virtual telescopes

Date: Nov 1, 2014

Author: David Bradley

Aligning two spacecraft to focus on a single astronomical target creates a single or "virtual" telescope and paves the way for extreme ultraviolet imaging of the Sun and X-ray imaging of solar flares, according to research by NASA scientists.

Read More thumbnail image: Aligning spacecraft Virtual telescopes

Journal Highlight: Manual corneal thickness measurements of healthy equine eyes using a portable spectral-domain optical coherence tomography device

Date: Oct 13, 2014

Author: spectroscopyNOW

Manual corneal thickness measurement using a portable SD-OCT device provides epithelial, stromal, Descemet's membrane and total corneal thickness measurements with clinically acceptable intra- and interoperator reliability in healthy equine eyes.

Read More thumbnail image: Journal Highlight Manual corneal thickness measurements of healthy equine eyes using a portable spectral-domain optical coherence tomography device

Solar power: An organic tin approach

Date: Oct 1, 2014

Author: David Bradley

German researchers have successfully integrated an organic tin moiety into a semiconducting polymer for the first time to make a new class of solar energy absorption material that can absorb a broad band across the electromagnetic spectrum from the sun.

Read More thumbnail image: Solar power An organic tin approach

Journal Highlight: Fluorescence methods (VistaCam iX proof and DIAGNODent pen) for the detection of occlusal carious lesions in teeth recovered from archaeological context

Date: Sep 8, 2014

Author: spectroscopyNOW

The abilities of two commercial tools to detect initial enamel caries in archaeologically derived material are compared with visual inspection, X-ray, histology, and micro-CT for teeth from the modern Islamic (AD 1850–1950), Islamic (AD 600–1200) and late Roman (AD 200–400) periods.

Read More thumbnail image: Journal Highlight Fluorescence methods VistaCam iX proof and DIAGNODent pen for the detection of occlusal carious lesions in teeth recovered from archaeological context

Oceanic methane: Greenhouse leakage

Date: Sep 1, 2014

Author: David Bradley

Natural methane leakage from the seafloor is far more widespread on the US Atlantic margin than geological scientists previously thought. Data from multibeam water-column backscatter experiments covering a 94000 square kilometre area reveal approximately 570 gas plumes at depths between 50 and 1700 metres. At these depths methane clathrates, in which this potent greenhouse gas is usually kept trapped under pressure, are unstable potentially allowing huge volumes to enter atmosphere.

Read More thumbnail image: Oceanic methane Greenhouse leakage

Journal Highlight: Cell-death assessment by fluorescent and nonfluorescent cytosolic and nuclear staining techniques

Date: Aug 11, 2014

Author: spectroscopyNOW

In this review, some of the most commonly used fluorescent and nonfluorescent staining techniques that identify apoptotic changes in cell, DNA and the nucleus are discussed.

Read More thumbnail image: Journal Highlight Cell-death assessment by fluorescent and nonfluorescent cytosolic and nuclear staining techniques

Toxic heavy metal detection: Portable sensitivity

Date: Aug 1, 2014

Author: David Bradley

Reflection spectroscopy can be used to detect mercury contamination of water down to a concentration of 200 parts per billion, according to Australian researchers working with colleagues in Spain. Their low cost, portable system will facilitate point of analysis testing.

Read More thumbnail image: Toxic heavy metal detection Portable sensitivity

Journal Highlight: A new approach for evaluating the water resistance of sunscreens on consumers: tap water vs. salt water vs. chlorine water

Date: Jul 7, 2014

Author: spectroscopyNOW

A new in vivo screening approach to measure water resistance of sunscreens using UVA-induced fluorescence imaging was applied to several formulations containing different polymers and compared to commercial products for tap, salt and chlorinated water.

Read More thumbnail image: Journal Highlight A new approach for evaluating the water resistance of sunscreens on consumers tap water vs_ salt water vs_ chlorine water
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