EarlyView Articles

Skip to Navigation

The very latest articles from the scientific literature
on Wiley Online Library...


You can keep up-to date on these EarlyView articles, which focus on spectroscopy
and separation science:


Please check back soon.

Wiley Online Library

Earlyview RSS Feed

rss

Filter by Journal

Browse By Journal

In situ analysis with portable Raman and ED‐XRF spectrometers for the diagnosis of the formation of efflorescence on walls and wall paintings of the Insula IX 3 (Pompeii, Italy)

Published: Nov 25, 2014

Author(s): Juan Manuel Madariaga, Maite Maguregui, Silvia Fdez‐Ortiz De Vallejuelo, Ulla Knuutinen, Kepa Castro, Irantzu Martinez‐Arkarazo, Anastasia Giakoumaki, Africa Pitarch

Journal: Journal of Raman Spectroscopy

This work presents the results of field Raman analyses, assisted by a hand‐held energy dispersive X‐ray fluorescence spectrometer, for the experimental determination of efflorescence from walls and wall paintings of two Pompeian houses, one with many luxurious decorative elements (House of Marcus Lucretius, Regio IX, Insula 3, House 5/24) and a more modest building (Regio IX, Insula 3, House 1‐2). Both exposed and protected rooms were...

Read More thumbnail image: In situ analysis with portable Raman and EDXRF spectrometers for the diagnosis of the formation of efflorescence on walls and wall paintings of the Insula IX 3 Pompeii Italy

Development of a solid‐phase microextraction fiber by the chemical binding of graphene oxide on a silver‐coated stainless‐steel wire with an ionic liquid as the crosslinking agent

Published: Nov 25, 2014

Author(s): Min Sun, Juanjuan Feng, Yanan Bu, Huimin Duan, Xiaojiao Wang, Chuannan Luo

Journal: Journal of Separation Science

Graphene oxide was bonded onto a silver‐coated stainless‐steel wire using an ionic liquid as the crosslinking agent by a layer‐by‐layer strategy. The novel solid‐phase microextraction fiber was characterized by scanning electron microscopy, energy‐dispersive X‐ray spectroscopy and Raman microscopy. A multilayer graphene oxide layer was closely coated onto the supporting substrate. The thickness of the coating was about 4 μm. Coupled with...

Read More thumbnail image: Development of a solidphase microextraction fiber by the chemical binding of graphene oxide on a silvercoated stainlesssteel wire with an ionic liquid as the crosslinking agent

Data analysis techniques in phosphoproteomics

Published: Nov 25, 2014

Author(s): Anke Meyer‐Baese, Joachim Wildberger, Uwe Meyer‐Baese, Carol L. Nilsson

Journal: ELECTROPHORESIS

The interpretation of phosphoproteomics data sets is crucial for generating hypotheses that guide therapeutic solutions, yet not many techniques have been applied to this type of analysis. This paper intends to give an overview about the two main standard techniques that can be applied to the analysis of these large scale data sets. These are data‐driven or exploratory techniques based on a statistical model and topology‐driven methods...

Read More thumbnail image: Data analysis techniques in phosphoproteomics

A study on the differential strategy of some iterative trilinear decomposition algorithms: PARAFAC‐ALS, ATLD, SWATLD, and APTLD

Published: Nov 25, 2014

Author(s): Shu‐Rong Zhang, Hai‐Long Wu, Ru‐Qin Yu

Journal: Journal of Chemometrics

This study presents an in‐depth discussion of the differential properties of various iterative trilinear decomposition algorithms, including Parallel Factor Analysis‐Alternating Least Squares (PARAFAC‐ALS), Alternating Trilinear Decomposition (ATLD), Self‐Weighted Alternating Trilinear Decomposition (SWATLD), and Alternating Penalty Trilinear Decomposition (APTLD). The shape of each algorithm's objective function (“convex” or “strictly...

Read More thumbnail image: A study on the differential strategy of some iterative trilinear decomposition algorithms PARAFACALS ATLD SWATLD and APTLD

Determination of breath gas composition of lung cancer patients using gas chromatography/mass spectrometry with monolithic material sorptive extraction

Published: Nov 25, 2014

Author(s): Wen Ma, Peng Gao, Jun Fan, Yuki Hashi, Zilin Chen

Journal: Biomedical Chromatography

ABSTRACT A gas chromatographic–mass spectrometric method with monolithic material sorptive extraction (MMSE) pretreatment was developed to determine the breath gas composition in lung cancer patients. MonoTrap silica monolithic and hybrid adsorbent was selected as the extraction medium during MMSE, given its strong capacity to extract volatile organic compounds (VOC) from exhaled gas. Under the appropriate conditions, high...

Read More thumbnail image: Determination of breath gas composition of lung cancer patients using gas chromatographymass spectrometry with monolithic material sorptive extraction

The prevalence of trimetazidine use in athletes in Poland: excretion study after oral drug administration

Published: Nov 24, 2014

Author(s): Anna Jarek, Marzena Wójtowicz, Dorota Kwiatkowska, Monika Kita, Ewa Turek‐Lepa, Katarzyna Chajewska, Sylwia Lewandowska‐Pachecka, Andrzej Pokrywka

Journal: Drug Testing and Analysis

Stimulants, together with anabolic androgenic steroids, are regarded as one of the most popular doping substances in sport. Owing to a great variety of these substances and new designer drugs being introduced to the market, each year the World Anti‐Doping Agency (WADA) updates the list of substances and methods prohibited in sport. On 1 January 2014, a new doping agent ‐ trimetazidine (TMZ) ‐ was added to the WADA Prohibited List. TMZ, a...

Read More thumbnail image: The prevalence of trimetazidine use in athletes in Poland excretion study after oral drug administration

MAIIA EPO SeLect – a rapid screening kit for the detection of recombinant EPO analogues in doping control: Inter‐laboratory prevalidation and normative study of athlete urine and plasma samples

Published: Nov 24, 2014

Author(s): Yvette Dehnes, Linda Myrvold, Helene Ström, Magnus Ericsson, Peter Hemmersbach

Journal: Drug Testing and Analysis

Recombinant analogues of erythropoietin (EPO), epoetins, have been misused by athletes due to their performance enhancing effect since the first pharmaceutical epoetin was launched in 1987. The current methods for screening urine and plasma samples for the presence of epoetins, IEF and SAR‐PAGE, have high sensitivity but are time‐consuming to carry out. In an effort to ease and speed up the screening procedure for EPO, MAIIA Diagnostics...

Read More thumbnail image: MAIIA EPO SeLect  a rapid screening kit for the detection of recombinant EPO analogues in doping control Interlaboratory prevalidation and normative study of athlete urine and plasma samples

Detection of iso‐α‐acids to confirm beer consumption in postmortem specimens

Published: Nov 24, 2014

Author(s): Luke N. Rodda, Dimitri Gerostamoulos, Olaf H. Drummer

Journal: Drug Testing and Analysis

Iso‐α‐acids (IAAs) can be used as markers for the consumption of beer. Postmortem specimens from a range of coronial cases were analyzed for IAAs in order to determine the prevalence of beer consumption and any correlation to blood alcohol concentrations (BAC). A total of 130 cases were included in this study including those where beer was mentioned in the case circumstances, cases where beer was not mentioned specifically but alcohol was...

Read More thumbnail image: Detection of isoacids to confirm beer consumption in postmortem specimens

Characterization of a biopharmaceutical protein and evaluation of its purification process using automated capillary Western blot

Published: Nov 24, 2014

Author(s): Dong Xu, Sarthak Mane, Zoran Sosic

Journal: ELECTROPHORESIS

This paper describes the application of an automated size‐based capillary Western blot system (Sally instrument) from ProteinSimple, Inc., for biopharmaceutical fusion‐Fc protein characterization and evaluation of its purification process. The fusion‐Fc protein column purification from an excess of single chain Fc polypeptide and removal of an enzyme coexpressed for protein maturation have been demonstrated using an automated capillary...

Read More thumbnail image: Characterization of a biopharmaceutical protein and evaluation of its purification process using automated capillary Western blot

Liquid phase based separation systems for depletion, prefractionation, and enrichment of proteins in biological fluids and matrices for in‐depth proteomics analysis—An update covering the period 2011–2014

Published: Nov 24, 2014

Author(s): Chanida Puangpila, Erandi Mayadunne, Ziad El Rassi

Journal: ELECTROPHORESIS

This review article expands on the previous one (S. Selvaraju and Z. El Rassi, Electrophoresis 2012, 33, 74–88) by reviewing pertinent literature in the period extending from early 2011 to present. As the previous review article, the present one is concerned with proteomic sample preparation (e.g., depletion of high‐abundance proteins, reduction of the protein dynamic concentration range, enrichment of a particular subproteome), and the subsequent...

Read More thumbnail image: Liquid phase based separation systems for depletion prefractionation and enrichment of proteins in biological fluids and matrices for indepth proteomics analysisAn update covering the period 20112014

Transformation of hydrophobic surface into superhydrophobic surface by interfacial flower like silver films

Published: Nov 24, 2014

Author(s): Namachivayam Karthik, Mathur Gopalakrishnan Sethuraman

Journal: Surface and Interface Analysis

Fabrication of superhydrophobic surface was achieved by electroless deposition of silver film and subsequent immersion into a mixture of stearic acid and cysteamine. The resultant superhydrophobic surface with flower and fall‐leaves like structure showed lotus leaf effect with the water contact angle of about 154° making copper surface water repellant. Copyright © 2014 John Wiley & Sons, Ltd.

Read More thumbnail image: Transformation of hydrophobic surface into superhydrophobic surface by interfacial flower like silver films

Synthesis, characterization and release profiles of nanoparticles self‐assembled from poly (PEGMA‐co‐MMA‐co‐acryloyl‐ β ‐CD) copolymers

Published: Nov 24, 2014

Author(s): Yongli Shi, Suying Ma, Ruiqiong Tian, Yingge Zhao, Qian Jiao, Xu Ma, Qing Shang

Journal: Surface and Interface Analysis

A novel amphiphilic copolymer was synthesized from poly (ethylene glycol) methyl ether methacrylate (PEGMA950), methyl methacrylate (MMA) and acryloyl‐β‐cyclodextrin (acryloyl‐β‐CD) using the composites of (NH4)2S2O8/NaHSO3 as the oxidation–reduction initiators. The successful fabrication of poly(PEGMA‐co‐MMA‐co‐acryloyl‐β‐CD) copolymers was confirmed by Fourier transform infrared spectrometer (FTIR), 1H‐nuclear magnetic resonance (1H NMR) spectra. The...

Read More thumbnail image: Synthesis characterization and release profiles of nanoparticles selfassembled from poly PEGMAcoMMAcoacryloyl  CD copolymers

The first montmorillonite‐supported surface single‐structure titanium complex: synthesis, characterization and catalytic activity in alkene epoxidation

Published: Nov 24, 2014

Author(s): Wei Xu, Bo Yu, Huaming Sun, Jindou Yang, Ying Zhang, Zhenhua Wang, Xi Chen, Guofang Zhang, Ziwei Gao

Journal: Surface and Interface Analysis

A well‐defined single‐site titanium‐modified montmorillonite (MMT) with only one geometric construction ((SiO)3–Ti–NMe2) was obtained in moderate conditions. Reaction of tetrakis(dimethylamido)titanium with hydroxylated MMT was conducted by surface organometallic chemistry technique, and the surface structure was characterized by in situ Fourier transform infrared spectroscopy, 13C cross polarization magic angle spinning nuclear magnetic resonance, X‐ray...

Read More thumbnail image: The first montmorillonitesupported surface singlestructure titanium complex synthesis characterization and catalytic activity in alkene epoxidation

The high concentration and uniform distribution of diamond particles in Ni‐diamond composite coatings by sediment co‐deposition

Published: Nov 24, 2014

Author(s): Jiaqian Qin, Xinyu Zhang, Yannan Xue, Malay Kumar Das, Adisak Thueploy, Sarintorn Limpanart, Yuttanant Boonyongmaneerat, Mingzhen Ma, Riping Liu

Journal: Surface and Interface Analysis

Ni‐diamond composite coatings with high concentration and uniform distribution of diamond particles were prepared by using sediment co‐deposition (SCD) technique from Watts‐type electrolyte without any additives. The surface and cross‐section morphology was evaluated by optical microscope (OM) and scanning electron microscopy (SEM). It was demonstrated that the Ni‐monolayer diamond composite coatings ~40 ± 5 µm was successfully prepared...

Read More thumbnail image: The high concentration and uniform distribution of diamond particles in Nidiamond composite coatings by sediment codeposition

Interface characteristics of thin liquid films in a charged lubricated contact

Published: Nov 24, 2014

Author(s): Guoxin Xie, Lina Si, Dan Guo, Shuhai Liu, Jianbin Luo

Journal: Surface and Interface Analysis

The interface characteristics of liquid films confined within a nanogap between a steel ball and a smooth glass disk after exposing to an external electric field (EEF) are reported in the paper. The emergence of micro‐bubbles induced by the EEF has been found to be closely related with the electric current flow at both a positive EEF and a negative EEF. The polarity effect of the variation in the electric current flowing through a polar...

Read More thumbnail image: Interface characteristics of thin liquid films in a charged lubricated contact

Surface characterization and electrical property of carbon fibers modified by air oxidation

Published: Nov 24, 2014

Author(s): Weiwei Li, Ruipei Li, Chunyang Li, Li Zhang

Journal: Surface and Interface Analysis

Polyacrylonitrile‐based carbon fibers were modified by oxidation in air, and a systematic study of surface groups and surface resistance at different treated temperatures was made. Progressive fiber weight loss occurred with increasing extents of air oxidation, and it was approximately proportional to the extent of air oxidation from the onset of oxidation up to 400 °C. At this point 4.4% of the initial fiber weight had been lost. A...

Read More thumbnail image: Surface characterization and electrical property of carbon fibers modified by air oxidation

The effect of nonmetallic element P in electroless Ni‐P coating on the passivation process during chemical conversion treatment

Published: Nov 24, 2014

Author(s): Songlin Mu, Wenfang Li, Jun Du

Journal: Surface and Interface Analysis

Pure Ni and electroless Ni‐P coating (ENPC) were passivated by a chemical conversion treatment. The passive films formed on pure Ni and ENPCs (with content of P 2.9, 7.2 and 11.7 at.% respectively) were analyzed by X‐ray photoelectron spectroscopy (XPS). High‐resolution XPS was also used to analyze the chemical states of the elements detected in the passive films. The results indicated that the detected Ni and P were in elemental states,...

Read More thumbnail image: The effect of nonmetallic element P in electroless NiP coating on the passivation process during chemical conversion treatment

Self‐gated cardiac Cine MRI of the rat on a clinical 3T MRI system

Published: Nov 24, 2014

Author(s): Martin Krämer, Karl‐Heinz Herrmann, Judith Biermann, Sebastian Freiburger, Michael Schwarzer, Jürgen R. Reichenbach

Journal: NMR in Biomedicine

The ability to perform small animal functional cardiac imaging on clinical MRI scanners may be of particular value in cases in which the availability of a dedicated high field animal MRI scanner is limited. Here, we propose radial MR cardiac imaging in the rat on a whole‐body clinical 3 T scanner in combination with interspersed projection navigators for self‐gating without any additional external triggering requirements for...

Read More thumbnail image: Selfgated cardiac Cine MRI of the rat on a clinical 3T MRI system

Development and validation of a sensitive UHPLC‐MS/MS method for the simultaneous analysis of tramadol, dextromethorphan chlorpheniramine and their major metabolites in human plasma in forensic context: application to pharmacokinetics

Published: Nov 24, 2014

Author(s): Hala M. Heneedak, Ismail Salama, Samia Mostafa, Ehab EL‐Kady, Mohamed El‐Sadek

Journal: Biomedical Chromatography

ABSTRACT The prerequisites for forensic confirmatory analysis by LC/MS/MS with respect to European Union guidelines are chromatographic separation, a minimum number of two MS/MS transitions to obtain the required identification points and predefined thresholds for the variability of the relative intensities of the MS/MS transitions (MRM transitions) in samples and reference standards. In the present study, a fast, sensitive and...

Read More thumbnail image: Development and validation of a sensitive UHPLCMSMS method for the simultaneous analysis of tramadol dextromethorphan chlorpheniramine and their major metabolites in human plasma in forensic context application to pharmacokinetics

A synthetic stimulant never tested in humans, 1,3‐dimethylbutylamine (DMBA), is identified in multiple dietary supplements

Published: Nov 24, 2014

Author(s): Pieter A. Cohen, John C. Travis, Bastiaan J. Venhuis

Journal: Drug Testing and Analysis

Read More thumbnail image: A synthetic stimulant never tested in humans 13dimethylbutylamine DMBA is identified in multiple dietary supplements
Page:   1 2 3 4 5 6 Next

Social Links

Share This Links

Bookmark and Share

Microsites

Suppliers Selection
Societies Selection

Banner Ad

Click here to see
all job opportunities

Most Viewed

Copyright Information

Interested in separation science? Visit our sister site separationsNOW.com

Copyright © 2014 John Wiley & Sons, Inc. All Rights Reserved