نتایج جستجو برای: rhenium 186
تعداد نتایج: 10553 فیلتر نتایج به سال:
Using energy-dispersive x-ray diffraction techniques together with the theory describing lattice strains under nonhydrostatic compression, the behavior of a layered sample of gold and rhenium has been studied at pressures of 14–37 GPa. For gold, the uniaxial stress component t is consistent with earlier studies and can be described by t50.0610.015P where P is the pressure in GPa. The estimated ...
Semiconducting transition metal dichalcogenides consist of monolayers held together by weak forces where the layers are electronically and vibrationally coupled. Isolated monolayers show changes in electronic structure and lattice vibration energies, including a transition from indirect to direct bandgap. Here we present a new member of the family, rhenium disulphide (ReS2), where such variatio...
Abstract: A rhenium complex, [ReBr(CO)3(thf)]2, catalyzed insertion of terminal alkynes into a C–H bond of active methylene sites of 1,3-dicarbonyl compounds. When a catalytic amount of isocyanide or molecular sieves was added to the reaction mixture, the reaction course changed markedly, and insertion of alkynes into a C–C single bond between αand β-positions of cyclic and acyclic β-keto ester...
A mild method for the regioselective coupling of propargyl alcohols and allylsilanes is described. The method employs an air- and moisture-tolerant rhenium-oxo complex ((dppm)ReOCl3) as a catalyst for the formation of sp3-carbon-sp3-carbon bonds without the need for prior activation of the propargyl alcohol as a halide or pseudohalide. The stability of the high oxidation state rhenium complex a...
EXAFS measurements have been carried out on very small osmium and rhenium metal particles supported on MgO. The metal particles were formed via decornposition and subsequent reduction in hydrogen of metal carbonyl clusters.
The immune and neuroendocrine systems of invertebrates, as well as vertebrates, share a common pool of molecules that have been conserved throughout evolution. Now we add a new interface to this bidirectional interaction, demonstrating the involvement of the gut system, showing that these three systems use the same biologically active peptides.
Abstract A phase I/IIa dose escalation trial was initiated to determine the safety and recommended II (RP2D) of 186RNL in patients with recurrent glioma. Liposomal rhenium-186 (186RNL) is a source high energy beta particles gamma photons attractive properties for brain CED.Patients biopsy proven glioma had computerized treatment planning placement up 4 intracranial catheter(s). Each patient rec...
A loading-unloading-reloading strategy via atomistic simulations is proposed to reveal the strengthening mechanisms of rhenium in nickel-based superalloys at ambient temperature. Simulations reproduce experimentally observed increased flow stress with addition rhenium. Besides usual solid solution strengthening, two novel are uncovered. One that facilitates dislocation nucleation and, thus, inc...
Rhemium-186-1-hydroxyethylidene-1,1-diphosphonate ((186)Re-HEDP) has been used for the palliation of metastatic bone pain. However, delayed blood clearance and high gastric uptake of radioactivity have been observed upon injection, due to the instability of (186)Re-HEDP. We designed, synthesized and evaluated a stable (186)Re-mercaptoacetylglycylglycylglycine (MAG3) complex-conjugated bisphosph...
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