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 emergence of new psychoactive substance (NPS) benzodiazepines: A review

Published: Jan 12, 2018

Author(s): Kieran R. Manchester, Emma C. Lomas, Laura Waters, Fiona C. Dempsey, Peter D. Maskell

Journal: Drug Testing and Analysis

Read More thumbnail image: The emergence of new psychoactive substance NPS benzodiazepines A review

Fault detection and diagnosis strategy based on a weighted and combined index in the residual subspace associated with PCA

Published: Jan 12, 2018

Author(s): Cheng Zhang, Xianwen Gao, Tao Xu, Yuan Li, Yujun Pang

Journal: Journal of Chemometrics

Abstract Process monitoring and diagnosis are crucial for efficient and optimal operation of a chemical plant. Most multivariate statistical process monitoring strategies, such as principal component analysis, kernel principal component analysis, and dynamic principal component analysis, take advantage of the squared prediction error statistic to monitor the state of samples in a residual subspace (RS). Squared prediction error is...

Read More thumbnail image: Fault detection and diagnosis strategy based on a weighted and combined index in the residual subspace associated with PCA

Fault detection and diagnosis strategy based on a weighted and combined index in the residual subspace associated with PCA

Published: Jan 12, 2018

Author(s): Cheng Zhang, Xianwen Gao, Tao Xu, Yuan Li, Yujun Pang

Journal: Journal of Chemometrics

Abstract Process monitoring and diagnosis are crucial for efficient and optimal operation of a chemical plant. Most multivariate statistical process monitoring strategies, such as principal component analysis, kernel principal component analysis, and dynamic principal component analysis, take advantage of the squared prediction error statistic to monitor the state of samples in a residual subspace (RS). Squared prediction error is...

Read More thumbnail image: Fault detection and diagnosis strategy based on a weighted and combined index in the residual subspace associated with PCA

Modeling of Hansen's solubility parameters of aripiprazole, ziprasidone, and their impurities: A nonparametric comparison of models for prediction of drug absorption sites

Published: Jan 12, 2018

Author(s): Darija Obradović, Filip Andrić, Mario Zlatović, Danica Agbaba

Journal: Journal of Chemometrics

Abstract Aripiprazole and ziprasidone are atypical antipsychotic drugs with the effect on positive and negative symptoms of schizophrenia, mania, and mixed states of bipolar disorder. Hansen's solubility parameters, δd, δp, and δh, which account for dispersive, polarizable, and hydrogen bonding contributions to the overall cohesive energy of a compound, are often used to assess pharmacokinetic properties of drugs. However, no data exist of...

Read More thumbnail image: Modeling of Hansens solubility parameters of aripiprazole ziprasidone and their impurities A nonparametric comparison of models for prediction of drug absorption sites

Modeling of Hansen's solubility parameters of aripiprazole, ziprasidone, and their impurities: A nonparametric comparison of models for prediction of drug absorption sites

Published: Jan 12, 2018

Author(s): Darija Obradović, Filip Andrić, Mario Zlatović, Danica Agbaba

Journal: Journal of Chemometrics

Abstract Aripiprazole and ziprasidone are atypical antipsychotic drugs with the effect on positive and negative symptoms of schizophrenia, mania, and mixed states of bipolar disorder. Hansen's solubility parameters, δd, δp, and δh, which account for dispersive, polarizable, and hydrogen bonding contributions to the overall cohesive energy of a compound, are often used to assess pharmacokinetic properties of drugs. However, no data exist of...

Read More thumbnail image: Modeling of Hansens solubility parameters of aripiprazole ziprasidone and their impurities A nonparametric comparison of models for prediction of drug absorption sites

Liquid chromatographic methods for the therapeutic drug monitoring of methotrexate as clinical decision support for personalized medicine: A brief review

Published: Jan 12, 2018

Author(s): Mónica Francisco Silva, Cláudia Ribeiro, Virgínia M. F. Gonçalves, Maria Elizabeth Tiritan, Áurea Lima

Journal: Biomedical Chromatography

Abstract Methotrexate (MTX) is an antifolate drug used for several diseases. Depending on the disease, MTX can be administered at low dose (LDMTX) in some autoimmune diseases, like rheumatoid arthritis, or at high dose (HDMTX) in some cancers, such as acute lymphoblastic leukemia. After absorption, MTX is metabolized in the liver to 7‐hydroxymethotrexate and in the intestine to 2,4‐diamino‐N10‐methylpteroic acid (DAMPA)....

Read More thumbnail image: Liquid chromatographic methods for the therapeutic drug monitoring of methotrexate as clinical decision support for personalized medicine A brief review

Liquid chromatographic methods for the therapeutic drug monitoring of methotrexate as clinical decision support for personalized medicine: A brief review

Published: Jan 12, 2018

Author(s): Mónica Francisco Silva, Cláudia Ribeiro, Virgínia M. F. Gonçalves, Maria Elizabeth Tiritan, Áurea Lima

Journal: Biomedical Chromatography

Abstract Methotrexate (MTX) is an antifolate drug used for several diseases. Depending on the disease, MTX can be administered at low dose (LDMTX) in some autoimmune diseases, like rheumatoid arthritis, or at high dose (HDMTX) in some cancers, such as acute lymphoblastic leukemia. After absorption, MTX is metabolized in the liver to 7‐hydroxymethotrexate and in the intestine to 2,4‐diamino‐N10‐methylpteroic acid (DAMPA)....

Read More thumbnail image: Liquid chromatographic methods for the therapeutic drug monitoring of methotrexate as clinical decision support for personalized medicine A brief review

Chemometrics in laser‐induced breakdown spectroscopy

Published: Jan 12, 2018

Author(s): Tianlong Zhang, Hongsheng Tang, Hua Li

Journal: Journal of Chemometrics

Abstract Laser‐induced breakdown spectroscopy (LIBS) is a new type of elemental analytical technology with the advantages of real‐time, online, and noncontact as well as enabling the simultaneous analysis of multiple elements. It has become a frontier analytical technique in spectral analysis. However, the issue of how to improve the accuracy of qualitative and quantitative analyses by extracting useful information from a large...

Read More thumbnail image: Chemometrics in laserinduced breakdown spectroscopy

Chemometrics in laser‐induced breakdown spectroscopy

Published: Jan 12, 2018

Author(s): Tianlong Zhang, Hongsheng Tang, Hua Li

Journal: Journal of Chemometrics

Abstract Laser‐induced breakdown spectroscopy (LIBS) is a new type of elemental analytical technology with the advantages of real‐time, online, and noncontact as well as enabling the simultaneous analysis of multiple elements. It has become a frontier analytical technique in spectral analysis. However, the issue of how to improve the accuracy of qualitative and quantitative analyses by extracting useful information from a large...

Read More thumbnail image: Chemometrics in laserinduced breakdown spectroscopy

Confidence ellipsoids for ASCA models based on multivariate regression theory

Published: Jan 12, 2018

Author(s): Kristian Hovde Liland, Age Smilde, Federico Marini, Tormod Næs

Journal: Journal of Chemometrics

Abstract In analysis of variance simultaneous component analysis, permutation testing is the standard way of assessing uncertainty of effect level estimates. This article introduces an analytical solution to the assessment of uncertainty through classical multivariate regression theory. We visualize the uncertainty as ellipsoids, contrasting these to data ellipsoids. This is further extended to multiple testing of effect level...

Read More thumbnail image: Confidence ellipsoids for ASCA models based on multivariate regression theory

Confidence ellipsoids for ASCA models based on multivariate regression theory

Published: Jan 12, 2018

Author(s): Kristian Hovde Liland, Age Smilde, Federico Marini, Tormod Næs

Journal: Journal of Chemometrics

Abstract In analysis of variance simultaneous component analysis, permutation testing is the standard way of assessing uncertainty of effect level estimates. This article introduces an analytical solution to the assessment of uncertainty through classical multivariate regression theory. We visualize the uncertainty as ellipsoids, contrasting these to data ellipsoids. This is further extended to multiple testing of effect level...

Read More thumbnail image: Confidence ellipsoids for ASCA models based on multivariate regression theory

Into the theory of the partial‐filling affinity capillary electrophoresis and the determination of apparent stability constants of analyte‐ligand complexes

Published: Jan 11, 2018

Author(s): Martin Ansorge, Pavel Dubský, Kateřina Ušelová

Journal: ELECTROPHORESIS

Abstract The partial‐filling affinity capillary electrophoresis (pf‐ACE) works with a ligand present in a background electrolyte that forms a weak complex with an analyte. In contrast to a more popular mobility‐shift affinity capillary electrophoresis, only a short plug of the ligand is introduced into a capillary in the pf‐ACE. Both methods can serve for determining apparent stability constants of the formed complexes but this task...

Read More thumbnail image: Into the theory of the partialfilling affinity capillary electrophoresis and the determination of apparent stability constants of analyteligand complexes

Into the theory of the partial‐filling affinity capillary electrophoresis and the determination of apparent stability constants of analyte‐ligand complexes

Published: Jan 11, 2018

Author(s): Martin Ansorge, Pavel Dubský, Kateřina Ušelová

Journal: ELECTROPHORESIS

Abstract The partial‐filling affinity capillary electrophoresis (pf‐ACE) works with a ligand present in a background electrolyte that forms a weak complex with an analyte. In contrast to a more popular mobility‐shift affinity capillary electrophoresis, only a short plug of the ligand is introduced into a capillary in the pf‐ACE. Both methods can serve for determining apparent stability constants of the formed complexes but this task...

Read More thumbnail image: Into the theory of the partialfilling affinity capillary electrophoresis and the determination of apparent stability constants of analyteligand complexes

Rapid preparation of methyltrimethoxy‐modified magnetic mesoporous silica as an effective solid‐phase extraction adsorbent

Published: Jan 11, 2018

Author(s): Shi‐Bin Qin, Yu‐Han Fan, Xiao‐Shui Li, Yuan Zhang, Shi‐Hua Qi

Journal: Journal of Separation Science

Abstract A time‐saving method was applied to synthesize methyltrimethoxy‐modified magnetic mesoporous silica with or without p‐toluenesulfonic acid as the catalyst for magnetic solid‐phase extraction. The synthesized materials were systematically characterized. Results demonstrated that methyltrimethoxy modified magnetic mesoporous silica with p‐toluenesulfonic acid as the catalyst has a relatively smaller aperture and extreme hydrophobicity (water contact...

Read More thumbnail image: Rapid preparation of methyltrimethoxymodified magnetic mesoporous silica as an effective solidphase extraction adsorbent

Rapid preparation of methyltrimethoxy‐modified magnetic mesoporous silica as an effective solid‐phase extraction adsorbent

Published: Jan 11, 2018

Author(s): Shi‐Bin Qin, Yu‐Han Fan, Xiao‐Shui Li, Yuan Zhang, Shi‐Hua Qi

Journal: Journal of Separation Science

Abstract A time‐saving method was applied to synthesize methyltrimethoxy‐modified magnetic mesoporous silica with or without p‐toluenesulfonic acid as the catalyst for magnetic solid‐phase extraction. The synthesized materials were systematically characterized. Results demonstrated that methyltrimethoxy modified magnetic mesoporous silica with p‐toluenesulfonic acid as the catalyst has a relatively smaller aperture and extreme hydrophobicity (water contact...

Read More thumbnail image: Rapid preparation of methyltrimethoxymodified magnetic mesoporous silica as an effective solidphase extraction adsorbent

Isolation of ellagic acid from pomegranate peel extract by hydrophobic interaction chromatography using graphene oxide grafted cotton fiber adsorbent

Published: Jan 11, 2018

Author(s): Rong Peng, Qijiayu Wu, Jingling Chen, Raja Ghosh, Xiaonong Chen

Journal: Journal of Separation Science

Abstract Ellagic acid, a natural polyphenol, was isolated from pomegranate peel extract by hydrophobic interaction using graphene oxide grafted cotton fiber as a stationary adsorbent. The grafted graphene oxide moieties served as hydrophobic interaction‐binding sites for ellagic acid adsorption. The graphene oxide grafted cotton fiber was made into a membrane‐like sheet in order to complete ellagic acid purification by using a...

Read More thumbnail image: Isolation of ellagic acid from pomegranate peel extract by hydrophobic interaction chromatography using graphene oxide grafted cotton fiber adsorbent

Isolation of ellagic acid from pomegranate peel extract by hydrophobic interaction chromatography using graphene oxide grafted cotton fiber adsorbent

Published: Jan 11, 2018

Author(s): Rong Peng, Qijiayu Wu, Jingling Chen, Raja Ghosh, Xiaonong Chen

Journal: Journal of Separation Science

Abstract Ellagic acid, a natural polyphenol, was isolated from pomegranate peel extract by hydrophobic interaction using graphene oxide grafted cotton fiber as a stationary adsorbent. The grafted graphene oxide moieties served as hydrophobic interaction‐binding sites for ellagic acid adsorption. The graphene oxide grafted cotton fiber was made into a membrane‐like sheet in order to complete ellagic acid purification by using a...

Read More thumbnail image: Isolation of ellagic acid from pomegranate peel extract by hydrophobic interaction chromatography using graphene oxide grafted cotton fiber adsorbent

Polarized Raman, FTIR, and DFT study of Na2Ti3O7 microcrystals

Published: Jan 11, 2018

Author(s): Fábio Lacerda Resende e Silva, Adailton Azevedo Araújo Filho, Mauricélio Bezerra Silva, Karla Balzuweit, Jean‐Louis Bantignies, Ewerton Wagner Santos Caetano, Roberto Luiz Moreira, Valder Nogueira Freire, Ariete Righi

Journal: Journal of Raman Spectroscopy

Abstract Sodium trititanate Na2Ti3O7 microcrystals were carefully prepared by sodium carbonate and titanium dioxide solid‐state reaction and characterized by scanning and transmission electron microscopies, selected area electron diffraction, X‐ray powder diffraction, and Raman and Fourier transform infrared spectroscopies. Electron microscopic techniques revealed that the samples were formed by elongated particles several microns...

Read More thumbnail image: Polarized Raman FTIR and DFT study of Na2Ti3O7 microcrystals

Polarized Raman, FTIR, and DFT study of Na2Ti3O7 microcrystals

Published: Jan 11, 2018

Author(s): Fábio Lacerda Resende e Silva, Adailton Azevedo Araújo Filho, Mauricélio Bezerra Silva, Karla Balzuweit, Jean‐Louis Bantignies, Ewerton Wagner Santos Caetano, Roberto Luiz Moreira, Valder Nogueira Freire, Ariete Righi

Journal: Journal of Raman Spectroscopy

Abstract Sodium trititanate Na2Ti3O7 microcrystals were carefully prepared by sodium carbonate and titanium dioxide solid‐state reaction and characterized by scanning and transmission electron microscopies, selected area electron diffraction, X‐ray powder diffraction, and Raman and Fourier transform infrared spectroscopies. Electron microscopic techniques revealed that the samples were formed by elongated particles several microns...

Read More thumbnail image: Polarized Raman FTIR and DFT study of Na2Ti3O7 microcrystals

Distinction and quantification of inorganic sulfur species including thiosulfate by X ‐ray fluorescence ( WD‐XRF )

Published: Jan 10, 2018

Author(s): Stephanie Hennings, Alexander Pleßow

Journal: X-Ray Spectrometry

Sulfur occurs in a variety of inorganic and organic compounds with oxidation states from −II up to +VI. Differentiation of these species in solid geochemical samples can be challenging because of oxidation processes during sample preparation by acidic digestion. Applying pressed powder pellets and an analysis by wavelength‐dispersive X‐ray fluorescence minimises reactions with oxidants and water. Main...

Read More thumbnail image: Distinction and quantification of inorganic sulfur species including thiosulfate by X ray fluorescence  WDXRF
Page:   Prev 1 2 3 4 5 6 7 8 9 10 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