نتایج جستجو برای: nuclear radiation spectroscopy

تعداد نتایج: 622441  

Background: Hot lab is a specially designed room in a nuclear medicine hospital where the radiopharmaceuticals are delivered, stored and prepared for dispensing. 99Mo/99mTc-generator is the major source in the hot lab used for various medical imaging. It is important to maintain a standard for hot lab procedures to optimize the patient care and minimize radiation exposure to all nuclear medicin...

Journal: :Journal of Nuclear Medicine 2009

Abolghasem Shameli Bahram Pourhasan

1, 4-Diazabicyclo [2.2.2] octane (DABCO) was employed as a catalyst for one-pot synthesis of pyrano[2,3-d] pyrimidinone derivatives and MWNT- pyrimidinones from condensation reactions of aromatic aldehydes, malononitrile and thiobarbituric acid and MWNT-COCl . This method delivers the advantages of a simple method, environment friendly procedure, mild reaction conditions and high returns. The m...

Hossein Tavakoli-Anbaran, Somayeh Jahanfar

Introduction: Proton therapy is a type of radiation treatment that it uses protons to treat cancer. Because of the protons’ unique ability to distribute the radiation dose more directly to the tumor, it minimizes the damage to nearby healthy tissues. The rate of energy loss by the ion in the target is called stopping power. The total stopping power is sum nuclear and electroni...

Journal: :European Physical Journal Plus 2021

Abstract Research at the Oslo Cyclotron Laboratory University of is focused on spectroscopy experiments for nuclear structure and astrophysics using Scintillator Array OSCAR. Light-ion beams from $$K=35$$ K=35 cyclotron are furthermore used studies in radia...

2003
H. Yamada

The controlled out-diffusion method was employed to induce a nuclear reaction in a palladium (Pd) plate with a MnOx film. The time-resolved mass spectra for Pd deuteride revealed tritium (T) production during the outdiffusion experiment. Similar time behaviors of mass number 1-4 and 6 in the spectra was also observed for Pd hydride. Film blackening was observed for most Pd deuteride as well as ...

Journal: :Cancer research 1990
J A Koutcher A A Alfieri A B Kornblith M L Devitt D Cowburn D Ballon J H Kim

Numerous agents have been studied in attempts to sensitize radioresistant hypoxic tumor cells. We have investigated the effect of Fluosol-DA plus carbogen (95% oxygen and 5% CO2) on the sensitivity of a radioresistant mammary carcinoma in C3H/He mice and also on tumor metabolism by 31P nuclear magnetic resonance spectroscopy. Statistically significant increases in phosphocreatine/Pi were noted ...

Journal: :The Review of scientific instruments 2012
Valerie J Scott Margaret Tse Michael J Shearn Peter H Siegel Xenia Amashukeli

We describe a sample-processing micro-reactor that utilizes 60 GHz RF radiation with approximately 730 mW of output power. The instrument design and performance characterization are described and then illustrated with modeling and experimental studies. The micro-reactor's efficiency on affecting hydrolysis of chemical bonds similar to those within large complex molecules was demonstrated: a dis...

Journal: :Molecules 2015
Yan-Mei Chen Yin-He Yang Xiao-Nian Li Cheng Zou Pei-Ji Zhao

Two new tetranorlabdane diterpenoids, named botryosphaerins G (1) and H (2), were isolated from the solid fermentation products of Botryosphaeria sp. P483 along with seven known tetranorlabdane diterpenes (3-9). Their structures were elucidated by extensive analysis, including 1D and 2D nuclear magnetic resonance (NMR) spectroscopy, and high-resolution electrospray ionization mass spectrometry ...

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