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Journal Highlight: Application of mass spectrometry in the characterization of chemicals in coal-derived liquids

Date: Aug 8, 2017

Author: spectroscopyNOW

The characterization of hydrocarbon, oxygen-containing, nitrogen-containing, sulfur-containing and halogen-containing chemicals in various coal-derived liquids by GC/MS, GCxGC-TOFMS and FTICR MS has been reviewed.

Read More thumbnail image: Journal Highlight Application of mass spectrometry in the characterization of chemicals in coal-derived liquids

Journal Highlight: Three-dimensional single-cell imaging with X-ray waveguides in the holographic regime

Date: Aug 8, 2017

Author: spectroscopyNOW

X-ray tomography of single biological cells in a low-dose regime, based on full-field holographic recordings, has been extended to eliminate the bottleneck of phase retrieval and cope with high noise.

Read More thumbnail image: Journal Highlight Three-dimensional single-cell imaging with X-ray waveguides in the holographic regime

Swabbing gunshot residues: Touch spray mass spectrometry for on-site analysis

Date: Aug 1, 2017

Author: Steve Down

Organic gunshot residues that have been deposited on human hands and other surfaces after shooting a weapon can be analysed in the field by swab touch spray mass spectrometry, eliminating sample preparation and reducing waiting times.

Read More thumbnail image: Swabbing gunshot residues Touch spray mass spectrometry for on-site analysis

Extended human proteome: Multishot procedure for single cell types

Date: Aug 1, 2017

Author: Steve Down

A novel strategy for deriving comprehensive human proteomes that relies on the offline HPLC separation of multiple injections of protein digests followed by fast scanning tandem mass spectrometry has identified more than 14,000 protein isoforms from a single human cell line.

Read More thumbnail image: Extended human proteome Multishot procedure for single cell types

Hydrophilic interactions change along with volume fractions

Date: Aug 1, 2017

Author: Ryan De Vooght-Johnson

Hydrophilic interaction liquid chromatography (HILIC) is a relatively new method, so theoretical work on the relationships between its parameters is not as extensive as with older techniques. Scientists from the University of Belgrade looked at the association between peak retention and mobile phase composition for HILIC on the antipsychotic drug olanzapine and its impurities using various theoretical models.

Read More thumbnail image: Hydrophilic interactions change along with volume fractions

Social rank: Stressed out by NMR

Date: Aug 1, 2017

Author: David Bradley

Social ranking is a major determining factor for vulnerability to chronic stress, according to a new study that uses nuclear magnetic resonance (NMR) spectroscopy to look at energy metabolism in the brain as a predictive biomarker.

Read More thumbnail image: Social rank Stressed out by NMR

Crystal reality check: Wonder stuff

Date: Aug 1, 2017

Author: David Bradley

It is well over a decade since materials scientists started to investigate so-called topological insulators. They are yet to live up to the hype and now researchers in the Netherlands think they know why.

Read More thumbnail image: Crystal reality check Wonder stuff

Bipolar telomeres: MRI and age

Date: Aug 1, 2017

Author: David Bradley

Patients with bipolar disorder treated with the standard drug for the condition, lithium, retain longer telomeres than untreated and asymptomatic family members. Evidence from magnetic resonance imaging (MRI) provides parallel support for the findings.

Read More thumbnail image: Bipolar telomeres MRI and age

Taking the pulse: Fast-action laser pulses

Date: Aug 1, 2017

Author: David Bradley

A system that can repeatedly deliver a filtered laser pulse of 0.19 mJ of energy at a repetition rate of 100 kHz has been developed by US researchers. Pulses of 7 femtoseconds duration are available for for experiments with this system.

Read More thumbnail image: Taking the pulse Fast-action laser pulses

Core of the problem: Cometary IR

Date: Aug 1, 2017

Author: David Bradley

NASA's Wide-field Infrared Survey Explorer (WISE) spacecraft has delivered new insights into the properties of long-period comets. In work led by James Bauer of the University of Maryland it has been shown that there are seven times as many long-period comets at least 1 kilometre in diameter than previously predicted.

Read More thumbnail image: Core of the problem Cometary IR
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