نتایج جستجو برای: rhenium 186

تعداد نتایج: 10553  

Journal: :Medical physics 2014
Francisco D C Guerra Liberal Adriana Alexandre S Tavares João Manuel R S Tavares

PURPOSE Throughout the years, the palliative treatment of bone metastases using bone seeking radiotracers has been part of the therapeutic resources used in oncology, but the choice of which bone seeking agent to use is not consensual across sites and limited data are available comparing the characteristics of each radioisotope. Computational simulation is a simple and practical method to study...

Journal: :Neuro-oncology 2012
C David James

The use of nanoparticles to improve the distribution and extend the duration of exposure to therapy continues to be investigated and applied in cancer research and treatment, respectively, more than 30 years subsequent to the earliest publications involving its use in experimental tumor models in vivo. Nanoparticle packaging of therapy is of particular interest for its potential to treat brain ...

2012
Vadim G. Kessler Gulaim A. Seisenbaeva

The review presents synthetic approaches to modern rhenium-based catalysts. Creation of an active center is considered as a process of obtaining a nanoparticle or a molecule, immobilized within a matrix of the substrate. Selective chemical routes to preparation of particles of rhenium alloys, rhenium oxides and the molecules of alkyltrioxorhenium, and their insertion into porous structure of ze...

2008
Yoichiro Kuninobu Yuta Nishina Atsushi Kawata Makoto Shouho Kazuhiko Takai

Rhenium complex, [ReBr(CO)3(thf)]2-catalyzed reactions between aromatic imines and either acetylenes or α,β-unsaturated carbonyl compounds gave indene derivatives in good to excellent yields. These reactions proceed via C–H bond activation, insertion of acetylenes or α,β-unsaturated carbonyl compounds, intramolecular nucleophilic cyclization, and reductive elimination. Indene derivatives were a...

Journal: : 2022

OBJECTIVE: This study aimed to evaluate the effect of radioisotope synovectomy with Yttrium-90 and Rhenium-186 on joints patients chronic hemophilic synovitis.MATERIAL AND METHODS: Retrospective analysis using in pediatric hemophilia treated Akdeniz University School Medicine between June 2005 September 2014 was carried out.RESULTS: Eighteen severe (mean age 12.55±4.93 years) underwent a total ...

2017
Joseph M. Mannion Matthew S. Wellons Charles R. Shick Glenn A. Fugate Brian A. Powell Scott M. Husson

Degassing is a common preparation technique for rhenium filaments used for thermal ionization mass spectrometric analysis of actinides, including plutonium. Although optimization studies regarding degassing conditions have been reported, little work has been done to characterize filament aging after degassing. In this study, the effects of filament aging after degassing were explored to determi...

Continuous counter-current extraction of rhenium from roasting dust leach liquor was carried out using a mixer-settler extractor. Tributylphosphate was used as the extractant diluted in kerosene. The effects of the flow rates and extraction stages number were investigated. The extraction efficiency was affected by the flow rates of the aqueous and organic phases, and its mechanism was qualitati...

2017
Alessandra Boschi Petra Martini Licia Uccelli

The favorable nuclear properties of rhenium-188 for therapeutic application are described, together with new methods for the preparation of high yield and stable 188Re radiopharmaceuticals characterized by the presence of the nitride rhenium core in their final chemical structure. 188Re is readily available from an 188W/188Re generator system and a parallelism between the general synthetic proc...

2014
Brian A. Rosen Eliezer Gileadi Noam Eliaz

The effect of pulse electrodeposition parameters on the composition and microstructure of Ni–Re alloys were studied on a rotating cylinder electrode. Ni–Re alloys were deposited from a citrate bath where the nickel-to-rhenium ratio was 45:1. The composition of the deposited alloy was monitored by energy dispersive spectroscopy (EDS) and compared to a single component transport-based model descr...

Journal: :Dalton transactions 2016
Antoine Maurin Chi-On Ng Lingjing Chen Tai-Chu Lau Marc Robert Chi-Chiu Ko

The electrochemical and photochemical catalytic reductions of CO2 using N,O and N,S-NHC-containing dicarbonyl rhenium(i) bipyridine complexes have been investigated. By replacing the carbonyl ligand in tricarbonyl rhenium(i) complexes with a weaker π-accepting ligand, the characteristic MLCT transitions shifted to lower energy. This makes photocatalysts capable of harvesting low-energy visible ...

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