Results 21 to 30 of about 687,001 (274)

Flexible synthesis of polyfunctionalised 3-fluoropyrroles [PDF]

open access: yes, 2016
An efficient and selective approach for the synthesis of polyfunctionalised 3-fluoropyrroles has been developed starting from commercial aldehydes.
Cogswell, Thomas J.   +2 more
core   +1 more source

Two-dimensional chromatography on silica gel-loaded paper for the microanalysis of polar lipids

open access: yesJournal of Lipid Research, 1966
Two-dimensional chromatography on commercially available silica gel-loaded paper for the microanalysis of polar lipids from various tissues is described. All common phospholipids and their lyso derivatives can be reproducibly separated.
R.E. Wuthier
doaj   +1 more source

ADVANCING THE SEPARATION SCIENCES THROUGH THE DELIVERY OF NEW MATERIALS, TECHNOLOGY AND METHODOLOGY. [PDF]

open access: yes, 2013
A thesis and collection of works submitted to Plymouth University in partial fulfilment for the degree of DOCTOR OF ...
Paull, Brett
core   +2 more sources

Pengembangan Media Praktikum PCT (Paper Chromatography Techniques) Berbasis Android dengan QR Code Technology pada Materi Pemisahan Campuran

open access: yesPendipa, 2022
The purpose of this study was to develop an android-based PCT (Paper Chromatography Techniques) practicum media with QR code technology on mixed separation materials to help improve the quality of learning, especially in general chemistry practicum ...
Mellyta Uliyandari   +2 more
doaj   +1 more source

A Monomer-to-Trimer Transition of the Human Mitochondrial Transcription Termination Factor (mTERF) Is Associated with a Loss of in Vitro Activity [PDF]

open access: yes, 2004
The human mitochondrial transcription termination factor (mTERF) is a nuclear-encoded 39-kDa protein that recognizes a mtDNA segment within the mitochondrial tRNALeu(UUR) gene immediately adjacent to and downstream of the 16 S rRNA gene. Binding of mTERF
Asin-Cayuela, Jordi   +2 more
core   +1 more source

Microfluidic Free‐Flow Paper Electrochromatography for Continuous Separation of Glycans

open access: yesChemElectroChem, 2022
Microfluidic free‐flow electrophoresis (μ‐FFE) is widely used for continuous separation of charged analytes. However, μ‐FFE is limited in the separation of analytes with the same electrophoretic mobility.
Yingchao Liu   +11 more
doaj   +1 more source

Enantioselective synthesis of non-proteinogenic 2-arylallyl-α-amino acids via Pd/In catalytic cascades [PDF]

open access: yes, 2006
An efficient synthesis of both R- and S-enantiomers of 2-arylallyl-α-amino acids via a diastereoselective Pd/In mediated catalytic allylation of chiral N-sulfinyl-α-imino esters is described.
Anwar   +23 more
core   +1 more source

Electronic circuitry used to automate paper chromatography [PDF]

open access: yes, 1967
Electronic circuit is used in a paper chromatograph instrument that has excellent sensitivity and furnishes a printed record of each test. The circuit measures and records changes in conductivity in a strip of chromatographic paper as different solutions
Steffensen, G. R.
core   +1 more source

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

Novel design of low volume mobile phase paper chromatography

open access: yesGreen Analytical Chemistry
A novel design and set up of paper chromatography in the form of radial serpentine arms laying horizontally is proposed. The consumption of mobile phase is reduced to be 1 mL or less as compared to the tens of mL typically used in the conventional set ...
Jacob DeMott   +5 more
doaj   +1 more source

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