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Study on carbon dioxide reduction with water over metal oxide photocatalysts

Published: Sep 2, 2018

Author(s): Yuma Kato, Muneaki Yamamoto, Masato Akatsuka, Ryota Ito, Akiyo Ozawa, Yu Kawaguchi, Tetsuo Tanabe, Tomoko Yoshida

Journal: Surface and Interface Analysis

Various metal oxides with 0.1 wt% Ag loaded as a cocatalyst were prepared by an impregnation method and examined their photocatalytic activity for CO2 reduction with water. Among all the prepared Ag‐loaded metal oxides, Ga2O3, ZrO2, Y2O3, MgO, and La2O3 showed activities for CO and H2 productions under ultraviolet light irradiation. Thus, metal oxides involving metal cations with closed shell electronic structures such as d0, d10, and s0 had the...

Read More thumbnail image: Study on carbon dioxide reduction with water over metal oxide photocatalysts

Lithium analysis in Li‐ion battery materials via a scanning electron microscopy‐based approach

Published: Sep 2, 2018

Author(s): Noboru Taguchi, Hikari Sakaebe, Shingo Tanaka

Journal: Surface and Interface Analysis

We performed Li analysis by reflection electron energy loss spectroscopy (REELS) with a scanning electron microscopy‐based apparatus. It was possible to distinguish between Li compounds containing different transition metal elements spatially, via the spectrum imaging scheme of REELS spectra. We also acquired the Li spectrum for an Li‐inserted graphite negative electrode. REELS measurements with hemispherical analyzer were performed to...

Read More thumbnail image: Lithium analysis in Liion battery materials via a scanning electron microscopybased approach

Development of quantitative imaging mass spectrometry ( q ‐IMS) for drug visualization using animal tissues

Published: Sep 2, 2018

Author(s): Emi Takeo, Shuichi Shimma

Journal: Surface and Interface Analysis

Quantitative imaging mass spectrometry (q‐IMS) is a frontier topic of research in drug analysis. Although many q‐IMS methodologies have been reported, validation of the method is insufficient. We have investigated the feasibility of coupling q‐IMS with liquid chromatography‐tandem mass spectrometry (LC‐MS/MS) to develop a verifiable method. The approach combines quantitative LC‐MS/MS information with the spatial distribution information obtained by...

Read More thumbnail image: Development of quantitative imaging mass spectrometry  q IMS for drug visualization using animal tissues

Effect of water on the interfacial structures of room‐temperature ionic liquids

Published: Sep 2, 2018

Author(s): Shouhei Kawada, Eri Kodama, Keisuke Sato, Shuhei Ogawa, Masaya Watanabe, Hikaru Okubo, Shinya Sasaki

Journal: Surface and Interface Analysis

The interfacial structures of cyano‐based room‐temperature ionic liquids play a very important role in reducing friction. However, the presence of water impairs their tribological performance. The interfacial structures and friction forces of 1‐ethyl‐3‐methylimidazolium dicyanamide, [EMIM][DCN], and the effect of water on these structures and forces were investigated using atomic force microscopy. In addition, the interaction of water and...

Read More thumbnail image: Effect of water on the interfacial structures of roomtemperature ionic liquids

Cathodoluminescence analysis of nonmetallic inclusions of nitrides in steel

Published: Sep 2, 2018

Author(s): Susumu Imashuku, Kazuaki Wagatsuma

Journal: Surface and Interface Analysis

Identification of nitride inclusions such as boron nitride (BN) and aluminum nitride (AlN) is important in the steelmaking industry because BN inclusions deteriorate the creep strength of ferritic heat‐resistant steel, and AlN inclusions cause transverse cracking in twin‐induced‐plasticity steel. The conventional method employed for the analysis of such inclusions in steel comprises both optical microscopy and electron probe microanalysis...

Read More thumbnail image: Cathodoluminescence analysis of nonmetallic inclusions of nitrides in steel

Scanning electrochemical cell microscopy for visualization and local electrochemical activities of lithium‐ion (de) intercalation process in lithium‐ion batteries electrodes

Published: Sep 2, 2018

Author(s): Akichika Kumatani, Yasufumi Takahashi, Chiho Miura, Hiroki Ida, Hirotaka Inomata, Hitoshi Shiku, Hirokazu Munakata, Kiyoshi Kanamura, Tomokazu Matsue

Journal: Surface and Interface Analysis

Scanning electrochemical cell microscopy with a single barrel micro‐/nano‐pipette (SECCM) was applied to lithium iron phosphate (LiFePO4) composite positive electrodes and an isolated LiFePO4 secondary particle for lithium‐ion batteries. To analyze lithium‐ion (Li+) charge or discharge process on the electrodes using local probe, a pipette filled with LiCl electrolyte solution and Ag/AgCl quasi‐reference counter electrode (QRCE) was used. Both the...

Read More thumbnail image: Scanning electrochemical cell microscopy for visualization and local electrochemical activities of lithiumion de intercalation process in lithiumion batteries electrodes

A comparison of coil combination strategies in 3D multi‐channel MRSI reconstruction for patients with brain tumors

Published: Aug 31, 2018

Author(s): Maryam Vareth, Janine Lupo, Peder Larson, Sarah Nelson

Journal: NMR in Biomedicine

The goal of this study was to find the most robust algorithm for a phase‐sensitive coil combination of 3D single‐cycle and lactate‐edited, multi‐channel H‐1 point‐resolved spectroscopy (PRESS) localized echo planar spectroscopic imaging (EPSI) data for clinical applications in the brain. Data were acquired over 5–10 minutes at 3T using 8‐ or 32‐channel array coils. Peak referencing with residual water and...

Read More thumbnail image: A comparison of coil combination strategies in 3D multichannel MRSI reconstruction for patients with brain tumors

Direct and indirect assessment of cancer metabolism explored by MRI

Published: Aug 31, 2018

Author(s): Shun Kishimoto, Nobu Oshima, Murali C. Krishna, Robert J. Gillies

Journal: NMR in Biomedicine

Magnetic resonance‐based approaches to obtain metabolic information on cancer have been explored for decades. Electron paramagnetic resonance (EPR) has been developed to pursue metabolic profiling and successfully used to monitor several physiologic parameters such as pO2, pH, and redox status. All these parameters are associated with pathophysiology of various diseases. Especially in oncology, cancer hypoxia has been intensively studied...

Read More thumbnail image: Direct and indirect assessment of cancer metabolism explored by MRI

Development of a method for the determination of hydromorphone in plasma by LC–MS

Published: Aug 30, 2018

Author(s): Sherry Cox, Joan Bergman, Shawna Hawkins, Kurt Sladky

Journal: Biomedical Chromatography

Abstract A simple high‐performance liquid chromatography method for the determination of hydromorphone in small volume plasma has been developed. Following solid‐phase extraction using Oasis HLB cartridges, samples were separated by reverse‐phase high‐performance liquid chromatography on an Atlantis T3 4.6 × 150 mm column (3.0 μm) and quantified using mass spectrometry. The mobile phase was a mixture of water with 0.1% formic acid...

Read More thumbnail image: Development of a method for the determination of hydromorphone in plasma by LCMS

Assessing the reproducibility of an O ‐glycopeptide enrichment method with a novel software, Pinnacle

Published: Aug 30, 2018

Author(s): Adam Pap, Amol Prakash, Katalin F. Medzihradszky, Zsuzsanna Darula

Journal: ELECTROPHORESIS

Abstract A novel software, Pinnacle was used to reassess the reproducibility of a 2‐step lectin‐based O‐glycopeptide enrichment method. A publicly available dataset consisting of 12 data files representing 3 technical replicates of enriched glycopeptides from human serum was investigated. Previously, an attempt for reproducibility assessment was made utilizing an MS/MS scan (MS2)‐based method. However, the stochastic nature of precursor ion...

Read More thumbnail image: Assessing the reproducibility of an O glycopeptide enrichment method with a novel software Pinnacle

On the recent developments of insulator‐based dielectrophoresis: A review

Published: Aug 30, 2018

Author(s): Blanca H. Lapizco‐Encinas

Journal: ELECTROPHORESIS

Abstract Insulator‐based dielectrophoresis (iDEP), also known as electrodeless DEP, has become a well‐known dielectrophoretic technique, no longer viewed as a new methodology. Significant advances on iDEP have been reported during the last 15 years. This review article aims to summarize some of the most important findings on iDEP organized by the type of dielectrophoretic mode: streaming and trapping iDEP. The former is primarily...

Read More thumbnail image: On the recent developments of insulatorbased dielectrophoresis A review

Decision support algorithm for the selection of analytical methods in organic compounds detection for future extraterrestrial exploratory missions

Published: Aug 30, 2018

Author(s): Bence Mátyás, Gabriela Bautista, Máté Szarka, Vanessa Serrano, Juan Morales Arteaga, David Loja, Stalin Gabriel Yaguana, Francisco Gómez, Lenin J. Ramírez‐Cando

Journal: ELECTROPHORESIS

Abstract The search for biotic compounds beyond planet Earth is among the highest priorities in space discovery. We sought to detect organic molecules in various earth soil samples collected from environments with extreme climatic conditions comparable to extraterrestrial environments using HPLC, spectrophotometry (UV, IR), GC/MS and vertical gel electrophoresis analyses systems. The applied methods in the study were compared using...

Read More thumbnail image: Decision support algorithm for the selection of analytical methods in organic compounds detection for future extraterrestrial exploratory missions

Paternity testing using massively parallel sequencing and the PowerSeq™ AUTO/Y system for short tandem repeat sequencing

Published: Aug 30, 2018

Author(s): Deborah S. B. S. Silva, Fernanda R. Sawitzki, Melissa K. R. Scheible, Sarah F. Bailey, Clarice S. Alho, Seth A. Faith

Journal: ELECTROPHORESIS

Abstract Massively parallel sequencing (MPS) is gaining attention as a new technology for routine forensic casework, including paternity testing. Recently released MPS multiplex panels provide many more loci compared to CE methods, plus provide sequence‐based alleles that together improve the statistical power of the genetic testing. Here, an MPS system (PowerSeq™ AUTO/Y) was applied for STR sequencing in the study of first‐degree...

Read More thumbnail image: Paternity testing using massively parallel sequencing and the PowerSeq AUTOY system for short tandem repeat sequencing

Comparative Proteome Analysis Reveals that Cuticular Proteins Analogous to Peritrophin‐Motif Proteins are Involved in the Regeneration of Chitin Layer in the Silk Gland of Bombyx mori at the Molting Stage

Published: Aug 30, 2018

Author(s): Xiaolu Zhang, Huaipu Chang, Zhaoming Dong, Yan Zhang, Dongchao Zhao, Lin Ye, Qingyou Xia, Ping Zhao

Journal: PROTEOMICS

Abstract The silk gland of silkworm produces silk proteins during larval development. Many studies have long focused on the silk gland of the fifth instar larvae, but few have investigated this gland at other larval stages. In the present study, the silk gland proteomes of the fourth instar and fourth molt are analyzed using liquid chromatography–tandem mass spectrometry. In total, 2654 proteins are identified from the silk gland. A...

Read More thumbnail image: Comparative Proteome Analysis Reveals that Cuticular Proteins Analogous to PeritrophinMotif Proteins are Involved in the Regeneration of Chitin Layer in the Silk Gland of Bombyx mori at the Molting Stage

Phospho‐Proteomic Analysis of Cardiac Dyssynchrony and Resynchronization Therapy

Published: Aug 30, 2018

Author(s): Marisa J. Stachowski, Ronald J. Holewinski, Eric Grote, Vidya Venkatraman, Jennifer E. Van Eyk, Jonathan A. Kirk

Journal: PROTEOMICS

Abstract Cardiac dyssynchrony arises from conduction abnormalities during heart failure and worsens morbidity and mortality. Cardiac resynchronization therapy (CRT) re‐coordinates contraction using bi‐ventricular pacing, but the cellular and molecular mechanisms involved remain largely unknown. The aim is to determine how dyssynchronous heart failure (HFdys) alters the phospho‐proteome and how CRT interacts with this unique phospho‐proteome by...

Read More thumbnail image: PhosphoProteomic Analysis of Cardiac Dyssynchrony and Resynchronization Therapy

Identification of metabolites of evobrutinib in rat and human hepatocytes by using ultra‐high performance liquid chromatography coupled with diode array detector and Q Exactive Orbitrap tandem mass spectrometry

Published: Aug 29, 2018

Author(s): Zeyun Li, Lizhen Zhang, Yongliang Yuan, Zhiheng Yang

Journal: Drug Testing and Analysis

Abstract Evobrutinib is a highly selective inhibitor of Bruton's tyrosine kinase (BTK) which may be clinically effective in treating certain autoimmune diseases. The purpose of the present study was to investigate the metabolism of evobrutinib in rat and human hepatocytes. Evobrutinib was incubated with rat and human hepatocytes at 37°C for 2 hours after which the samples were analyzed by ultra‐high performance liquid...

Read More thumbnail image: Identification of metabolites of evobrutinib in rat and human hepatocytes by using ultrahigh performance liquid chromatography coupled with diode array detector and Q Exactive Orbitrap tandem mass spectrometry

Development of an LC‐MS/MS‐based assay to determine artemitin in rat plasma and its application in a pharmacokinetic study

Published: Aug 29, 2018

Author(s): Xiaoli Han, Jinhua He, Qinyue Chen, Yali Sun, Xiulei Zhang, Zhengyi Gu, Xianyi Sha

Journal: Biomedical Chromatography

Abstract Artemitin, a significant flavonol compound existing in Laggera pterodonta (DC.) Benth., Artemisia rupestris L, etc., is the subject of attention by researchers owing to its pharmacological activities (such as antioxidative, anti‐inflammatory and antiviral). In this work, a highly sensitive and specific high‐performance liquid chromatography–electrospray ionization–tandem mass spectrometry (HPLC‐ESI‐MS/MS) assay combined with protein...

Read More thumbnail image: Development of an LCMSMSbased assay to determine artemitin in rat plasma and its application in a pharmacokinetic study

Implementing a biogeographic ancestry inference service for forensic casework

Published: Aug 29, 2018

Author(s): Soulbee Jin, Maretta Chase, Margaret Henry, Gerry Alderson, James M. Morrow, Sobia Malik, David Ballard, Joel McGrory, Neil Fernandopulle, Jonathan Millman, Jack Laird

Journal: ELECTROPHORESIS

Abstract The Centre of Forensic Sciences has validated the Precision ID Ancestry Panel on the Ion S5™ Massively Parallel Sequencing instrument for use in forensic casework. The focus of this paper is the development of reporting guidelines for implementation of the biogeographic ancestry inference service based on the Admixture Prediction results produced using the Torrent Suite™ Software (Thermo Fisher Scientific). The Admixture...

Read More thumbnail image: Implementing a biogeographic ancestry inference service for forensic casework

Photoelectron emission characteristics of iron surfaces scratched in different environments: Dependence on photon energy irradiation methods

Published: Aug 29, 2018

Author(s): Yoshihiro Momose, Takao Sakurai, Keiji Nakayama

Journal: Surface and Interface Analysis

The characteristics of photoelectron emission (PE) and X‐ray photoelectron spectroscopy of iron surfaces scratched in different environments were investigated. The scratching environments were air, water, and organic liquids. The PE quantum yields (emitted electrons/photon), YFD and Ys, were obtained in 2 ways of irradiation of the surface with photon energies: during the light wavelength scan in the range of 300 to 200 nm at 25°C,...

Read More thumbnail image: Photoelectron emission characteristics of iron surfaces scratched in different environments Dependence on photon energy irradiation methods

Changes in the Raman spectra of monolayer MoS 2 upon thermal annealing

Published: Aug 29, 2018

Author(s): Ho‐Jong Kim, Daehee Kim, Suyong Jung, Myung‐Ho Bae, Yong Ju Yun, Sam Nyung Yi, Jeong‐Seon Yu, Jong‐Hyun Kim, Dong Han Ha

Journal: Journal of Raman Spectroscopy

Abstract Defects have crucial effects on the electronic and optoelectronic properties of two‐dimensional materials. In this work, we measured the changes in the Raman spectra and electrical conductance of monolayer molybdenum disulfide (MoS2) with increasing defects via thermal annealing in a reducing atmosphere. Raman spectra of the basal plane MoS2 on SiO2 differed from those of the edge and revealed intricate changes upon annealing up to 550°C due to...

Read More thumbnail image: Changes in the Raman spectra of monolayer MoS 2 upon thermal annealing
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