Results 11 to 20 of about 155,404 (340)

An osmium-peroxo complex for photoactive therapy of hypoxic tumors

open access: yesNature Communications, 2021
The limited therapeutic effect on hypoxic and refractory solid tumors has hindered the practical application of photodynamic therapy. Herein, we report our investigation of an osmium-peroxo complex (Os2), which is inactive in the dark, but can release a ...
Nong Lu   +5 more
semanticscholar   +1 more source

Osmium isotope analysis as an innovative tool for provenancing ancient iron: A systematic approach

open access: yesPLoS ONE, 2020
The innovation of iron production is often considered one of the greatest technological advances in human history. A reliable provenancing method for iron is instrumental for the reconstruction of economic, social and geo-political aspects of iron ...
M. Brauns   +5 more
semanticscholar   +1 more source

Visualization of cytoplasmic organelles via in-resin CLEM using an osmium-resistant far-red protein

open access: yesScientific Reports, 2020
Post-fixation with osmium tetroxide staining and the embedding of Epon are robust and essential treatments that are used to preserve and visualize intracellular membranous structures during electron microscopic analyses.
I. Tanida   +3 more
semanticscholar   +1 more source

Dicarba-closo-dodecarborane-containing half-sandwich complexes of ruthenium, osmium, rhodium and iridium : biological relevance and synthetic strategies [PDF]

open access: yes, 2012
This review describes how the incorporation of dicarba-closo-dodecarboranes into half-sandwich complexes of ruthenium, osmium, rhodium and iridium might lead to the development of a new class of compounds with applications in medicine. Such a combination
Barry, Nicolas P. E., Sadler, P. J.
core   +1 more source

Process and kinetic analysis of osmium prepared by microwave sintering

open access: yesFenmo yejin jishu, 2021
Os sintered body was prepared by microwave sintering process. The influences of the green compact pressure and the microwave sintering parameters (heating rate, sintering temperature, and holding time) on the microstructure and relative density of Os ...
LIU Wei   +9 more
doaj   +1 more source

Discovery of Tantalum, Rhenium, Osmium, and Iridium Isotopes [PDF]

open access: yes, 2011
Currently, thirty-eight tantalum, thirty-eight rhenium, thirty-nine osmium, and thirty-eight iridium, isotopes have been observed and the discovery of these isotopes is discussed here.
Abou-Leila   +131 more
core   +1 more source

SYNTHESIS OF OSMIUM COMPLEXES ON THE BASE OF NEW POLYMERS CONTAINING AMINE AND CARBOXYLIC FUNCTIONAL GROUPS

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2016
Osmium complexes by interaction osmium bipyridyl chloride (Os(bipy)2Cl2) and dimmethylbipyridil chloride (Os(dimebipy)2Cl2) with a number of synthesised polymers on the base of 1-(3-aminepropyl)-imidazole, methylmethacrylate, acrylic acid and ...
Yu. M. Sultanov
doaj   +1 more source

Seawater Chemistry and Hydrothermal Controls on the Cenozoic Osmium Cycle

open access: yesGeophysical Research Letters, 2021
Osmium isotope ratios are a key tool to track changes in global weathering and carbon cycle evolution through time. Long‐term changes in seawater Os isotope records over the Cenozoic have been used to argue for changes in weathering from increased uplift,
Joachim A. R. Katchinoff   +4 more
doaj   +1 more source

Anti-colorectal cancer activity of an organometallic osmium arene azopyridine complex [PDF]

open access: yes, 2011
This first in vivo antitumour activity for an organometallic osmium arene complex, [Os(eta(6)-p-cym)(4-(2-pyridylazo)-N,N-dimethylaniline)I]PF(6), is reported. The complex delays the growth of HCT116 human colon cancer xenografts in mice, with negligible
Cooper, Patricia A.   +6 more
core   +1 more source

The possible existence of Hs in nature from a geochemical point of view [PDF]

open access: yes, 2006
A hypothesis of the existence of a long-lived isotope 271Hs in natural molybdenites and osmirides is considered from a geochemical point of view. It is shown that the presence of Hs in these minerals can be explained only by making an additional ad hoc ...
A. D. Brandon   +32 more
core   +2 more sources

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