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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

Titanic isotopes: Mooning around nitrogen

Date: Jul 1, 2014

Author: David Bradley

New evidence for the origins of nitrogen in the atmosphere of Saturn's moon has been unearthed by ESA and NASA funded scientists and suggests that the element comes from protosolar ammonia found in the cold birthplace of the most ancient comets of the Oort cloud. The discovery precludes the hypothesis that Titan's building blocks formed within the warm disk of material thought to have surrounded the fledgling planet Saturn itself during its formation.

Read More thumbnail image: Titanic isotopes Mooning around nitrogen

Journal Highlight: Intraoperative fluorescence delineation of head and neck cancer with a fluorescent anti-epidermal growth factor receptor nanobody

Date: Jun 9, 2014

Author: spectroscopyNOW

Orthotopic tongue tumors and cervical lymph node metastases in a mouse model were clearly identified intraoperatively using a recently developed fluorescent EGFR-targeting nanobody, giving surgeons real-time visualization of tumors during surgery.

Read More thumbnail image: Journal Highlight Intraoperative fluorescence delineation of head and neck cancer with a fluorescent anti-epidermal growth factor receptor nanobody

UV poop test: Samples water

Date: Jun 1, 2014

Author:

Contamination of water with fecal matter is a serious risk, especially in the developing world, for several diseases that are often lethal. Now, UV technology capable of sampling water systems to find indicators of fecal matter at levels thousandths or even millionths of times lower than those detected by conventional methods has been developed by a team of researchers at Texas A&M University.

Read More thumbnail image: UV poop test Samples water

Journal Highlight: Kinetics and mechanism studies on dispersion of CNT in SDS aqueous solutions

Date: May 12, 2014

Author: spectroscopyNOW

The kinetics and mechanism of the dispersion of carbon nanotubes in sodium dodecyl sulfate aqueous solutions were studied by UV-visible absorption spectroscopy.

Read More thumbnail image: Journal Highlight Kinetics and mechanism studies on dispersion of CNT in SDS aqueous solutions

Microgel sensors: Nerve gas responders

Date: May 1, 2014

Author: David Bradley

Writing in the journal Angewandte Chemie, a Canadian research team has demonstrated the optical properties of stacked microgel structures and how they might change in response to variations in light levels, the pH or temperature of the surroundings or even the presence of particular substrates including nerve gases.

Read More thumbnail image: Microgel sensors Nerve gas responders

Journal Highlight: Discrimination of vinegars using a catalytic nanomaterials-based chemiluminescence sensor array

Date: Apr 7, 2014

Author: spectroscopyNOW

A chemiluminescence sensor array based on nine catalytic nanomaterials was prepared for the discrimination of eight vinegars, the response patterns being obtained as fingerprints for a given compound.

Read More thumbnail image: Journal Highlight Discrimination of vinegars using a catalytic nanomaterials-based chemiluminescence sensor array
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