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X‐ray spectroscopy for chemistry in the 2‐4 keV energy regime at the XMaS beamline: ionic liquids, Rh and Pd catalysts in gas and liquid environments, and Cl contamination in γ‐Al2O3

04-Oct-2015 | Paul B. J. Thompson, Bao N. Nguyen, Rachel Nicholls, Richard A. Bourne, John B. Brazier, Kevin R. J. Lovelock, Simon ..., Journal of Synchrotron Radiation, 2015

The 2–4 keV energy range provides a rich window into many facets of materials science and chemistry. Within this window, P, S, Cl, K and Ca K‐edges may be found along with the L‐edges of industrially important elements from Y through to Sn. Yet, compared with those that cater for energies above ...


Mass transfer in electromembrane extraction – The link between theory and experiments

30-Sep-2015 | Chuixiu Huang, Henrik Jensen, Knut Fredrik Seip, Astrid Gjelstad, Stig Pedersen‐Bjergaard, Journal of Separation Science, 2015

Electromembrane extraction was introduced in 2006 as a totally new sample preparation concept for extraction of charged analytes present in aqueous samples. Electromembrane extraction is based on electrokinetic migration of the analytes through a supported liquid membrane and into a μL‐volume of ...


New Supercharging Reagents Produce Highly Charged Protein Ions in Native Mass Spectrometry

30-Sep-2015 | Catherine C Going; Zijie Xia; Evan R Williams, Analyst, 2015

The effectiveness of two new supercharging reagents for producing highly charged ions by electrospray ionization (ESI) from aqueous solutions in which proteins have native structures and reactivities were investigated. In aqueous solution, 2-thiophenone and 4-hydroxymethyl-1,3-dioxolan-2-one (HD) ...


Sensors, Vol. 15, Pages 25336-25365: GPS Cycle Slip Detection Considering Satellite Geometry Based on TDCP/INS Integrated Navigation

30-Sep-2015 | Kim, Younsil ; Song, Junesol ; Kee, Changdon ; Park, Byungwoon, Sensors, 2015

This paper presents a means of carrier phase cycle slip detection for an inertial-aided global positioning system (GPS), which is based on consideration of the satellite geometry. An integrated navigation solution incorporating a tightly coupled time differenced carrier phase (TDCP) and inertial ...


Aliphatic Polyamine Oxidation Reaction Mechanism at Boron‐doped Microcrystalline and Ultrananocrystalline Diamond Electrodes

29-Sep-2015 | Małgorzata Witek, Miles D. Koppang, Greg M. Swain, Electroanalysis, 2015

Abstract The oxidation reaction mechanism of several aliphatic polyamines was studied using diamond electrodes with different doping levels and non‐diamond carbon impurity content. The important roles of surface boron and localized non‐diamond carbon sites in the polyamine oxidation reaction ...


X‐ray‐induced Cu deposition and patterning on insulators at room temperature

29-Sep-2015 | Pei‐Cheng Hsu, Yu‐Sheng Chen, Yeukuang Hwu, J. H. Je, G. Margaritondo, Eng Soon Tok, Journal of Synchrotron Radiation, 2015

X‐ray irradiation is shown to trigger the deposition of Cu from solution, at room temperature, on a wide variety of insulating substrates: glass, passivated Si, TiN/Ti/SiO2/Si and photoresists like PMMA and SU‐8. The process is suitable for patterning and the products can be used as seeds for ...


Applications of VUV extra‐focus mechanism: high‐performance dual‐mode monochromator from VUV to soft X‐ray

29-Sep-2015 | Chaofan Xue, Yanqing Wu, Ying Zou, Lian Xue, Zhi Guo, Yong Wang, Renzhong Tai, Journal of Synchrotron Radiation, 2015

A new monochromator scheme is presented in which an extra‐focus constant‐included‐angle varied‐line‐spacing cylindrical‐grating monochromator (extra‐focus CIA‐VCGM) is conveniently combined with a variable‐included‐angle varied‐line‐spacing plane‐grating monochromator (VIA‐VPGM). This dual‐mode ...


Sensors, Vol. 15, Pages 25015-25032: Optimisation and Characterisation of Anti-Fouling Ternary SAM Layers for Impedance-Based Aptasensors

29-Sep-2015 | Miodek, Anna ; Regan, Edward M.; Bhalla, Nikhil ; Hopkins, Neal A.E.; Goodchild, Sarah A.; Estrela, Pedro, Sensors, 2015

An aptasensor with enhanced anti-fouling properties has been developed. As a case study, the aptasensor was designed with specificity for human thrombin. The sensing platform was developed on screen printed electrodes and is composed of a self-assembled monolayer made from a ternary mixture of ...


Stabilizing proteins for affinity capillary electrophoresis using ionic liquid aqueous two phase systems: pharmaceuticals and human serum albumin

28-Sep-2015 | Deia Abd El‐Hady, Hassan M. Albishri, Rajesh Rengarajan, Sami El Deeb, Hermann Wätzig, ELECTROPHORESIS, 2015

Recently, ionic liquids (ILs) are finding ever broader scope within pharmaceutical and bioanalytical applications. In the current work, ACE binding measurements of tryptophan (Try)‐HSA, chlorambucil (CHL)‐HSA and dacarbazine (DTIC)‐HSA complexes were estimated in the absence or presence of ...


Electrochemical characterization of anodized AA 2139 friction stir‐welded butt joint for aeronautical applications

28-Sep-2015 | Antonello Astarita, Vincenza Marzocchi, Antonino Squillace, Francesco Bellucci, Surface and Interface Analysis, 2015

In the present work, AA2139 rolled sheets were friction stir welded in butt joint configuration and anodized in sulfo‐tartaric acid solution. Both the microstructure and the corrosion behavior of the joints were studied. Electrochemical spectroscopy measurements were carried out in aggressive ...


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