Results 21 to 30 of about 868 (153)

Structure and conserved function of iso-branched sphingoid bases from the nematode Caenorhabditis elegans [PDF]

open access: yes, 2017
Sphingolipids are bio-active metabolites that show structural diversity among eukaryotes. They are essential for growth of all eukaryotic cells but when produced in an uncontrolled manner can lead to cell death and pathologies including auto-immune ...
Feng, Suihan   +4 more
core   +2 more sources

Synthesis in silica nanoreactor: Copper pyrophosphate quantum dots and silver oxide nanocrystallites inside silica mezochannels [PDF]

open access: yes, 2020
The synthesis routes are presented for the preparation of nanocomposites composed of nanocrystals placed inside SBA-15 silica pores. The procedures assume treating the silica channels as nanoreactors, where nanocrystals are created as a result of thermal
Cpałka, Krzysztof   +4 more
core   +1 more source

Solar H$_2$ evolution in water with modified diketopyrrolopyrrole dyes immobilised on molecular Co and Ni catalyst–TiO$_2$ hybrids [PDF]

open access: yes, 2017
A series of diketopyrrolopyrrole (DPP) dyes with a terminal phosphonic acid group for attachment to metal oxide surfaces were synthesised and the effect of side chain modification on their properties investigated.
Durrant, J   +6 more
core   +2 more sources

Exploring the role of the α-carboxyphosphonate moiety in the HIV-RT activity of α-carboxy nucleoside phosphonates [PDF]

open access: yes, 2016
As α-carboxy nucleoside phosphonates (α-CNPs) have demonstrated a novel mode of action of HIV-1 reverse transcriptase inhibition, structurally related derivatives were synthesized, namely the malonate 2, the unsaturated and saturated bisphosphonates 3 ...
Arnold, Eddy   +6 more
core   +1 more source

Bisphosphonate inhibitors of squalene synthase protect cells against cholesterol‐dependent cytolysins [PDF]

open access: yes, 2021
Certain species of pathogenic bacteria damage tissues by secreting cholesterol‐dependent cytolysins, which form pores in the plasma membranes of animal cells. However, reducing cholesterol protects cells against these cytolysins.
Allemann, Rudolf K.   +7 more
core   +3 more sources

The effect of lignin content and lignin modification on Norway spruce wood properties and decay resistance [PDF]

open access: yes, 2008
Three different Norway spruce cutting clones growing in three environments with different soil and climatic conditions were studied. The purpose was to follow variation in the radial growth rate, wood properties and lignin content and to modify wood ...
Raiskila, Sanni
core   +1 more source

Phosphonic Acid-Functionalized Diblock Copolymer Nano-Objects via Polymerization-Induced Self-Assembly: Synthesis, Characterization, and Occlusion into Calcite Crystals [PDF]

open access: yes, 2016
Dialkylphosphonate-functionalized and phosphonic acid-functionalized macromolecular chain transfer agents (macro-CTAs) were utilized for the reversible addition–fragmentation chain transfer (RAFT) dispersion polymerization of benzyl methacrylate (BzMA ...
Alexander N. Kulak   +9 more
core   +2 more sources

17O NMR: A "Rare and Sensitive" Probe of Molecular Interactions and Dynamics [PDF]

open access: yes, 2015
This review summarizes recent developments in the area of liquid-state Nuclear Magnetic Resonance spectroscopy of the 17O nucleus. It is structured in Sections, respectively covering (a) general background information, with special emphasis on spin ...
Abdul-Sada   +189 more
core   +1 more source

Polyvinylpyrrolidone-bromine complex: An efficient polymeric reagent for selective preparation of benzyl bromides in the presence of hexamethyldisilane [PDF]

open access: yes, 2012
Benzylic bromides were conveniently obtained in high yields via the reaction of the corresponding alcohols with crosslinked polyvinylpyrrolidone-bromine complex (PVPP-Br2)/hexamethyldisilane in chloroform at reflux condition.
M. Lakouraj, Moslem, Mokhtary, Masoud
core   +3 more sources

Kinetic Study on the Reaction of (Arylthio)trimethylsilanes with Phenacyl Bromide Giving Aryl Phenacyl Sulfides and Bromotrimethylsilane [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1981
Abstract A kinetic study has been conducted on the reactions of (arylthio)trimethylsilanes with phenacyl bromide giving aryl phenacyl sulfides and bromotrimethylsilane. Remarkably large positive substituent effect (ρ=+2.2) and large negative entropy of activation were observed for the reaction. A mechanism involving 5-coordinated silicon
Seizi Kozuka   +2 more
openaire   +1 more source

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