Results 101 to 110 of about 453,529 (334)

A new method of peak detection for analysis of comprehensive two-dimensional gas chromatography mass spectrometry data

open access: yes, 2014
We develop a novel peak detection algorithm for the analysis of comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry (GC$\times$GC-TOF MS) data using normal-exponential-Bernoulli (NEB) and mixture probability models.
Jeong, Jaesik   +4 more
core   +1 more source

Design of Efficient and Mechanically Robust Anion Exchange Membrane for Water Electrolysis Achieved by Chemically Crosslinked Elastomers using Polyfluorene‐Based Conjugated Polymers

open access: yesAdvanced Functional Materials, EarlyView.
High‐performance SEBS‐PFB AEM is developed by crosslinking SEBS‐amine with polyfluorene‐based crosslinker containing benzene spacer. With the superior electrochemical and mechanical properties, SEBS‐PFB enabled an AEMWE single cell to achieve a high current density of 14.0 A cm−2 at 2.0 V and 80 °C in 1 m KOH, using a PtRu/C cathode and Ni2Fe anode ...
Hyun Soo Kwon   +8 more
wiley   +1 more source

Cytochemical studies of planetary microorganisms - Explorations in exobiology Status report, Sep. 1, 1965 - Apr. 1, 1966 [PDF]

open access: yes
Cytochemical studies of planetary microorganisms by fluorometry, gas chromatography and optical resolution, mass spectrometry, computer managed instrumentation, and UV ...
Lederberg, J., Levinthal, E. C.
core   +1 more source

An In Situ Study of the Topochemical Transformation of Hybrid Layered Hydroxides Into Metallic Nanocomposites

open access: yesAdvanced Functional Materials, EarlyView.
Herein, the topochemical transformation of cobalt‐based layered hydroxides into nanocomposites is investigated using advanced real‐time characterization techniques combined with thermogravimetric analysis. The study reveals how interlayer carboxylic acids direct the transformation pathway, highlighting the role of carbon content and anion length. These
Camilo Jaramillo‐Hernández   +5 more
wiley   +1 more source

Nitrogen isotope analysis of ammonium and glycine [PDF]

open access: yes, 2005
Stable isotope techniques can be used as a tool in nitrogen cycling studies of different ecosystems. The studies are based on measurement of the heavy (15N)- to- light (14N) isotopic ratios of nitrogen in different biospheric pools.
Norlin, Elin
core  

Cross-Platform Comparison of Untargeted and Targeted Lipidomics Approaches on Aging Mouse Plasma. [PDF]

open access: yes, 2018
Lipidomics - the global assessment of lipids - can be performed using a variety of mass spectrometry (MS)-based approaches. However, choosing the optimal approach in terms of lipid coverage, robustness and throughput can be a challenging task.
Brunet, Anne   +6 more
core   +3 more sources

Anomalous Stiffening of a Conjugated Polymer During Electrochemical Oxidation

open access: yesAdvanced Functional Materials, EarlyView.
The electromechanical response of a thienothiophene‐based conjugated polymer with triethylene glycol side chains is investigated. Electrochemical nanoindentation and atomic force microscopy reveal a modest and reversible increase in elastic modulus at room temperature upon electrochemical oxidation.
Judith Pons i Tarrés   +17 more
wiley   +1 more source

The Recognition Chemicals in Fingerprints by Gas Chromatography/Mass Spectrometry

open access: yesResearch on Addiction, 2014
Objective: It has been greatly attempted to learn more about chemical information on finger prints using new vehicular technique use for the detection of a variety of substances, including narcotic drugs and medicines, as well using nano particles bound ...
M Rezaei, M Gholami
doaj  

GLC analysis of base composition of RNA and DNA hydrolysates [PDF]

open access: yes
Various methods used for the analysis of the base composition of RNA and DNA hydrolysates are presented. The methods discussed are: (1) ion-exchange chromatography, (2) paper chromatography, (3) paper electrophoresis, (4) thin layer chromatography, (5 ...
Gehreke, C. W., Lakings, D. B.
core   +1 more source

Biological Activity of Some Malaysian Plant Extracts [PDF]

open access: yes, 1988
Extracts obtained from three Malaysian Labiatae plants, including Ocimum sanctum, Mentha arvensis and Orthoshiophon staminea, were investigated for their biological activity.
Sukari, Mohd Aspollah, Takahashi, Shozo
core  

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