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121 Newest Publications about the topic chromatography systems

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Thermotropic and Lyotropic Transitions of Concentrated Solutions of Liquid Crystalline Block Copolymers in a Liquid Crystalline Solvent

06-Oct-2017 | Wei Wei; Donglei You; Huiming Xiong, Macromolecules, 2017

Rich phase structures and evolutions of the blends of smectic–nematic (S–N) liquid crystalline (LC) diblock copolymers and a nematic solvent (5CB) are investigated in a concentrated regime. These types of fully LC systems are macroscopically homogeneous with ordered phase-separated structures on ...

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Thermotropic and Lyotropic Transitions of Concentrated Solutions of Liquid Crystalline Block Copolymers in a Liquid Crystalline Solvent

06-Oct-2017 | Wei Wei; Donglei You; Huiming Xiong, Macromolecules, 2017

Rich phase structures and evolutions of the blends of smectic–nematic (S–N) liquid crystalline (LC) diblock copolymers and a nematic solvent (5CB) are investigated in a concentrated regime. These types of fully LC systems are macroscopically homogeneous with ordered phase-separated structures on ...

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Nanomaterials as Stationary Phases and Supports in Liquid Chromatography

01-Aug-2017 | Sandya R. Beeram, Elliott Rodriguez, Suresh Doddavenkatanna, Zhao Li, Allegra Pekarek, Darin Peev, Kathryn Goerl, Gi ..., ELECTROPHORESIS, 2017

The development of various nanomaterials over the last few decades has led to many applications for these materials in liquid chromatography (LC). This review will look at the types of nanomaterials that have been incorporated into LC systems and the applications that have been explored for such ...

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Swelling behavior of poly(n‐butyl acrylate/1,6‐hexane‐diol‐di‐acrylate)/nematic liquid crystal E7 systems: Experimental measurements and modeling by factorial design method

15-May-2017 | Boumédiène Dali Youcef, Tewfik Bouchaour, Zohra Bouberka, Muriel Bigan, Ulrich Maschke, Journal of Applied Polymer Science, 2017

ABSTRACT The swelling process of poly(n‐butyl acrylate/1,6‐hexane‐diol‐di‐acrylate) (Poly(Abu/HDDA)) networks, immersed in a liquid crystalline (LC) solvent, was investigated in order to obtain improved swelling ratio values upon application of an original method using a central composite ...

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Molecules, Vol. 21, Pages 1495: Feasibility of Fraction Collection in HPLC Systems with Evaporative Light Scattering Detector: Analysis of Pectinatella magnifica

08-Nov-2016 | Pazourek, Jiří ; Šmejkal, Karel, Molecules, 2016

The use of a liquid chromatography (LC) splitter inserted between an HPLC column and an evaporative light scattering detector (ELSD) is described. This paper aims to show the feasibility of using the splitter in an HPLC-ELSD system to fractionate a model mixture of analytes, namely salicin ...

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Determination of Antioxidants and Corresponding Degradation Products in Fresh and Used Engine Oils

19-Aug-2016 | Georg Kreisberger; Christian W. Klampfl; Wolfgang W. Buchberger, Energy & Fuels, 2016

At elevated temperatures mineral oil based lubricants are prone to oxidation. Thus, antioxidative stabilization of engine oils is an important issue in lubrication engineering. Although there are various tests in order to assess the oxidative stability of a lubricant, only very little is known ...

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Quantitative, Point-of-Care Immunoassay Platform to Guide and Monitor Sickle Cell Disease Therapy

02-Aug-2016 | Xiaoxi Yang; Hunter D. Reavis; Christopher L. Roberts; Jason S. Kim, Analytical Chemistry, 2016

Sickle cell patients often require monthly transfusions with normal blood to treat the many complications of the disease. In this therapy, the clinician lowers the amount of hemoglobin S (HbS) containing red blood cells (RBCs) by transfusing normal blood units containing hemoglobin A (HbA). We ...

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Determination of Flow Rates in Capillary Liquid Chromatography Coupled to a Nanoelectrospray Source using Droplet Image Analysis Software

13-Jul-2016 | Alejandro M. Cohen; Axel J. Soto; James P. Fawcett, Analytical Chemistry, 2016

Liquid chromatography coupled to electrospray tandem mass spectrometry (LC–ESI-MS/MS) is widely used in proteomic and metabolomic workflows. Considerable analytical improvements have been observed when the components of LC systems are scaled down. Currently, nano-ESI is typically done at ...

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A Versatile and Scalable Strategy to Discrete Oligomers

06-May-2016 | Jimmy Lawrence; Sang-Ho Lee; Allison Abdilla; Mitchell D. Nothling; Jing M. Ren; Abigail S. Knight; Carolin Fleischm ..., Journal of the American Chemical Society, 2016

A versatile strategy is reported for the multigram synthesis of discrete oligomers from commercially available monomer families, e.g., acrylates, styrenics, and siloxanes. Central to this strategy is the identification of reproducible procedures for the separation of oligomer mixtures using ...

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Using curtain flow second-generation silica monoliths to improve separations at pressures less than 400bar

27-Mar-2016 | Author(s): A. Soliven, S. Pravadali-Cekic, D. Foley, L. Pereira, G.R. Dennis, K. Cabrera, H. Ritchie, ..., Microchemical Journal, 2016

Publication date: July 2016 Source:Microchemical Journal, Volume 127 Author(s): A. Soliven, S. Pravadali-Cekic, D. Foley, L. Pereira, G.R. Dennis, K. Cabrera, H. Ritchie, T. Edge, R.A. Shalliker The performance of a second-generation analytical-scale silica monolith ...

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