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:

Earlyview RSS Feed

rss

Filter by Journal

Browse By Journal

The New Face of the Lipid Droplet: Lipid Droplet Proteins

Published: Oct 9, 2018

Author(s): Congyan Zhang, Pingsheng Liu

Journal: PROTEOMICS

Abstract The lipid droplet (LD) is an organelle with vital functions found in nearly all organisms. LD proteomic research has provided fundamentally important insights into this organelle's functions. The review provides a summary of LD proteomic studies conducted across diverse organisms and cell and tissue types. The accumulated proteomic data are reviewed for evidence of a protein targeting mechanism for the organelle. The...

Read More thumbnail image: The New Face of the Lipid Droplet Lipid Droplet Proteins

PHOTOIONIZATION AND PHOTOFRAGMENTATION IN MASS SPECTROMETRY WITH VISIBLE AND UV LASERS

Published: Oct 9, 2018

Author(s): Frank Gunzer, Sascha Krüger, Jürgen Grotemeyer

Journal: Mass Spectrometry Reviews

Ever since the introduction of laser technology to the field of mass spectrometry, several disciplines evolved providing solutions to challenging scientific and analytical tasks in research and industry. Among these are techniques involving multiphoton ionization such as Resonance‐Enhanced Multiphoton Ionization (REMPI, R2PI) and Mass‐Analyzed Threshold Ionization (MATI) spectroscopy, a variant of Zero Kinetic Energy...

Read More thumbnail image: PHOTOIONIZATION AND PHOTOFRAGMENTATION IN MASS SPECTROMETRY WITH VISIBLE AND UV LASERS

A method for improvement of mass resolution and isotope accuracy for laser ablation time‐of‐flight mass spectrometers

Published: Oct 9, 2018

Author(s): Reto Wiesendanger, Marek Tulej, Valentine Grimaudo, Alena Cedeño‐López, Rustam Lukmanov, Andreas Riedo, Peter Wurz

Journal: Journal of Chemometrics

Abstract Accumulation of spectra is a common approach for improvement of the signal‐to‐noise ratio (SNR) in mass spectrometry. However, severe degradation of the overall spectrum can occur if some individual mass spectra, affected by peak broadening, are included in the accumulation process. In this contribution, we discuss potential sources and effects of spectral distortions by using examples from mass spectra acquired by our...

Read More thumbnail image: A method for improvement of mass resolution and isotope accuracy for laser ablation timeofflight mass spectrometers

Performance of methods that separate common and distinct variation in multiple data blocks

Published: Oct 9, 2018

Author(s): Ingrid Måge, Age K. Smilde, Frans M. Kloet

Journal: Journal of Chemometrics

Abstract In many areas of science, multiple sets of data are collected from the samples. Such data sets can be analyzed by multiblock (or data fusion) methods. The aim is usually to get a holistic understanding of the system or better prediction of some response. Lately, several scientific groups have developed methods for separating common and distinct variation between multiple data blocks. Although the objective is the same, the strategies...

Read More thumbnail image: Performance of methods that separate common and distinct variation in multiple data blocks

AlSi ordering in albite: A combined single‐crystal X ‐ray diffraction and Raman spectroscopy study

Published: Oct 9, 2018

Author(s): Mario Tribaudino, G. Diego Gatta, Irene Aliatis, Danilo Bersani, Pier Paolo Lottici

Journal: Journal of Raman Spectroscopy

Abstract Raman spectra of a low albite single crystal were collected during annealing at 1076°C for up to 46 days. At seven annealing stages, the single crystal structure was refined by X‐ray intensity data to determine the degree of AlSi order using the tetrahedral bond distances. Single‐crystal X‐ray diffraction showed that residuals in the difference‐Fourier map of the electron density and atomic displacement parameters of...

Read More thumbnail image: AlSi ordering in albite A combined singlecrystal X ray diffraction and Raman spectroscopy study

Searching for biomarkers of chronic obstructive pulmonary disease using proteomics: The current state

Published: Oct 8, 2018

Author(s): Maddalena Cagnone, Roberta Salvini, Anna Bardoni, Marco Fumagalli, Paolo Iadarola, Simona Viglio

Journal: ELECTROPHORESIS

Abstract Detection of proteins which may be potential biomarkers of disorders represents a big step forward in understanding the molecular mechanisms that underlie pathological processes. In this context proteomics plays the important role of opening a path for the identification of molecular signatures that can potentially assist in early diagnosis of several clinical disturbances. Aim of this report is to provide an overview of...

Read More thumbnail image: Searching for biomarkers of chronic obstructive pulmonary disease using proteomics The current state

Depth profiling of tungsten coating layer on CuCrZr alloy using LIBS approach

Published: Oct 8, 2018

Author(s): Muhammad Imran, Li‐Ying Sun, Ping Liu, Harse Sattar, Dongye Zhao, Zongxin Mu, Hongbin Ding

Journal: Surface and Interface Analysis

Laser induced breakdown spectroscopy (LIBS) was employed to find the depth profile of W‐coated CuCrZr alloy. Cathodic arc deposition method was applied to produce tungsten coating on the CuCrZr alloy. The LIBS measurements were carried out by using a Nd:YAG laser at its fundamental wavelength (1064 nm) with various fluences. The spectral intensity emitted from laser induced plasma of the coating material was investigated for both...

Read More thumbnail image: Depth profiling of tungsten coating layer on CuCrZr alloy using LIBS approach

Improving the interfacial property of carbon fibre/epoxy resin composites by grafting amine‐capped cross‐linked poly‐itaconic acid

Published: Oct 8, 2018

Author(s): Lei Shang, Mengjie Zhang, Liu Liu, Linghan Xiao, Ming Li, Yuhui Ao

Journal: Surface and Interface Analysis

To improve the interfacial properties of carbon fibre‐reinforced polymer composites, a surface treatment was used to cap cross‐linked poly‐itaconic acid onto carbon fibres via in‐situ polymerization after itaconic acid grafting. The chemical composition of the modified carbon fiber (CF) surface was characterized by X‐ray photoelectron spectral and Fourier‐transform infrared spectroscopy. Scanning electron microscopy and atomic force...

Read More thumbnail image: Improving the interfacial property of carbon fibreepoxy resin composites by grafting aminecapped crosslinked polyitaconic acid

Actuation of adaptive liquid microlens droplet in microfluidic devices: A review

Published: Oct 8, 2018

Author(s): Gui‐Ping Zhu, Jia‐Feng Yao, Shi‐Hua Wu, Xi‐Dong Zhang

Journal: ELECTROPHORESIS

Abstract A significant growth of research on adaptive liquid lens is achieved over the past decades, and the field is still attracting increasing attentions, focusing on the transition from the current stage to the commercialized stage. The challenges faced are not limited to fabrication, material, small tuning range in focal lengths, additional control systems, limitations in special actuation methods and so on. In addition, the...

Read More thumbnail image: Actuation of adaptive liquid microlens droplet in microfluidic devices A review

On hybrid electroosmotic kinetics for field‐effect‐reconfigurable nanoparticle trapping in a four‐terminal spiral microelectrode array

Published: Oct 5, 2018

Author(s): Yukun Ren, Chunlei Song, Weiyu Liu, Tianyi Jiang, Jingni Song, Qisheng Wu, Hongyuan Jiang

Journal: ELECTROPHORESIS

Abstract Induced‐charge electroosmosis (ICEO) has attracted tremendous popularity for driving fluid motion from the microfluidic community since the last decade, while less attention has been paid to ICEO‐based nanoparticle manipulation. We propose herein a unique concept of hybrid electroosmotic kinetics (HEK) in terms of bi‐phase ICEO (BICEO) actuated in a four‐terminal spiral electrode array, for effective electrokinetic...

Read More thumbnail image: On hybrid electroosmotic kinetics for fieldeffectreconfigurable nanoparticle trapping in a fourterminal spiral microelectrode array

On‐line electroextraction in capillary electrophoresis: Application on the determination of glutamic acid in soy sauces

Published: Oct 5, 2018

Author(s): Camila D. M. Campos, Felix G. R. Reyes, Andreas Manz, José A. F. da Silva

Journal: ELECTROPHORESIS

Abstract We present an on‐line, single step coupling between liquid‐liquid extraction and capillary electrophoresis with capacitively coupled contactless conductivity detection, which allows an efficient analysis of complex food matrices with high sodium content. The sodium depletion was demonstrated using an aqueous two‐phase system. The aqueous two‐phase system enables the electrically driven extraction of the target compounds....

Read More thumbnail image: Online electroextraction in capillary electrophoresis Application on the determination of glutamic acid in soy sauces

Coupling Raman spectroscopy and drop tensiometry for in situ monitoring of radical polymerization in a single monomer droplet

Published: Oct 4, 2018

Author(s): Elise Dropsit, Jacques Desbrières, David Chapron, Sandrine Hoppe, Alain Durand, Patrice Bourson

Journal: Journal of Raman Spectroscopy

Abstract Two complementary analytical techniques, Raman spectroscopy and drop tensiometry, were coupled in an original homemade experimental setup for in situ monitoring of radical polymerization in a single monomer droplet. Homopolymerizations of styrene and methyl methacrylate initiated by 2,2′‐azobisisobutyronitrile in a single droplet surrounded by an aqueous medium containing sodium dodecylsulfate were investigated. Monomer...

Read More thumbnail image: Coupling Raman spectroscopy and drop tensiometry for in situ monitoring of radical polymerization in a single monomer droplet

Solid confirmation for the origin of the low‐wave stray light in Raman spectra

Published: Oct 4, 2018

Author(s): Fei Jiao, Xiaofeng Dong, Yan Gong, WeiHua Chen, Yan Wang, Shu‐Lin Zhang

Journal: Journal of Raman Spectroscopy

Abstract The stray light appearing in the low wavenumber region of Raman spectra has long been the intrinsic hindrance in Raman spectroscopy. In this work, we confirmed that the stray light mentioned above originates from the grating secondary maxima of Rayleigh scattering experimentally and theoretically. This result also gives a clear inspiration for the suppression of such kind of stray light.

Read More thumbnail image: Solid confirmation for the origin of the lowwave stray light in Raman spectra

Panelists bias matrix estimation in a red wine trained panel: A potential tool for data pre‐treatment and feedback calibration

Published: Oct 4, 2018

Author(s): Charles Diako, Kevin D. Cooper, Carolyn F. Ross

Journal: Journal of Chemometrics

Abstract In this study, panelists' bias in a trained wine sensory panel was abstracted as a linear operator to provide feedback to the panelists, to adjust (“filter”) evaluations and to predict attribute ratings of unknown samples. The bias matrix is a square matrix of attributes showing individual panelists intensity agreement with the entire panel average. Using this matrix to filter the original intensity ratings reduced the...

Read More thumbnail image: Panelists bias matrix estimation in a red wine trained panel A potential tool for data pretreatment and feedback calibration

New advances in microfluidic flow cytometry

Published: Oct 4, 2018

Author(s): Yanli Gong, Na Fan, Xu Yang, Bei Peng, Hai Jiang

Journal: ELECTROPHORESIS

Abstract In recent years, researchers are paying the increasing attention to the development of portable microfluidic diagnostic devices including microfluidic flow cytometry for the point‐of‐care testing. Microfluidic flow cytometry, where microfluidics and flow cytometry work together to realize novel functionalities on the microchip, provides a powerful tool for measuring the multiple characteristics of biological samples. The...

Read More thumbnail image: New advances in microfluidic flow cytometry

Caffeine content of pre‐workout supplements commonly used by Australian consumers

Published: Oct 3, 2018

Author(s): Ben Desbrow, Susan Hall, Helen O'Connor, Gary Slater, Katelyn Barnes, Gary Grant

Journal: Drug Testing and Analysis

Abstract The stimulant properties of caffeine are often promoted in pre‐workout supplements (PWS) to assist with training, reduce the perception of fatigue, and for some brands, assist body fat loss. While manufacturers of PWS often indicate the inclusion of significant amounts of caffeine, no independent verification of the caffeine content of these products exists. The aim of this investigation was to independently assess the...

Read More thumbnail image: Caffeine content of preworkout supplements commonly used by Australian consumers

CE‐MS for metabolomics: Developments and applications in the period 2016–2018

Published: Oct 2, 2018

Author(s): Rawi Ramautar, Govert W. Somsen, Gerhardus J. Jong

Journal: ELECTROPHORESIS

Abstract In the field of metabolomics, CE‐MS is now recognized as a strong analytical technique for the analysis of (highly) polar and charged metabolites in a wide range of biological samples. Over the past few years, significant attention has been paid to the design and improvement of CE‐MS approaches for (large‐scale) metabolic profiling studies and for establishing protocols in order to further expand the role of CE‐MS in...

Read More thumbnail image: CEMS for metabolomics Developments and applications in the period 20162018

Atomistic study of GaSe/Ge(111) interface formed through van der Waals epitaxy

Published: Oct 2, 2018

Author(s): Takahiro Yonezawa, Tatsuya Murakami, Koichi Higashimine, Antoine Fleurence, Yoshifumi Oshima, Yukiko Yamada‐Takamura

Journal: Surface and Interface Analysis

Layered materials can be grown on various substrates through van der Waals epitaxy (vdWE) regardless of lattice mismatch. The atomistic study of the film‐substrate interface in vdWE is becoming increasingly important due to their expected applications as two‐dimensional (2D) materials. In this contribution, we have grown GaSe thin films on Ge(111) substrates by molecular beam epitaxy and studied the GaSe/Ge(111) interface using high‐angle...

Read More thumbnail image: Atomistic study of GaSeGe111 interface formed through van der Waals epitaxy

Electrokinetics with blood

Published: Oct 1, 2018

Author(s): Suman Chakraborty

Journal: ELECTROPHORESIS

Abstract Microfluidics based lab‐on‐a‐chip technology holds tremendous promises towards point‐of‐care diagnosis of diseases as well as for developing engineered devices aimed towards replicating the intrinsic functionalities of human bodies as mediated by blood vessel mimicking circulatory networks. While the analysis of transport of blood including its unique cellular constituents has remained to be the focus of many reported...

Read More thumbnail image: Electrokinetics with blood

Study of aldehyde oxidase by micellar electrokinetic chromatography separation of O 6 ‐benzylguanine and 8‐oxo‐O 6 ‐benzylguanine

Published: Oct 1, 2018

Author(s): Shengyun Huang, Erwin Adams, Ann Schepdael

Journal: ELECTROPHORESIS

Abstract A separation method for O6‐benzylguanine (O6‐BG) and 8‐oxo‐O6‐benzylguanine (8‐oxo‐O6‐BG) is developed by using MEKC. This study includes the optimization of separation and incubation parameters for both off‐line and on‐line procedures. The BGE consisted of 25 mM sodium phosphate buffer‐methanol (70:30, v/v), apparent pH 7.4, in which SDS and methyl‐β‐cyclodextrin were dissolved yielding final concentrations of 50 and 15 mM,...

Read More thumbnail image: Study of aldehyde oxidase by micellar electrokinetic chromatography separation of O 6 benzylguanine and 8oxoO 6 benzylguanine
Page:   Prev 13 14 15 16 17 18 19 20 21 22 23 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 spectroscopy? Visit our sister site spectroscopyNOW.com

Copyright © 2018 John Wiley & Sons, Inc. All Rights Reserved