Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 10 of 10 for “"beta-emitters"”.
-
Entwicklung magnetischer Mikrokalorimeter für die hochauflösende Spektroskopie des beta-Emitters 36Cl
Im Rahmen der vorliegenden Arbeit wurde ein Detektorprototyp für ener- giedispersive Messungen von -Spektren mit magnetischen Kalorimetern entwickelt und an einer 36Cl-Quelle getestet. Beim Zerfall des Isotops ent- stehen hochenergetische Elektronen mit einer Energie bis zu 709,6 keV, die im …
-
Study of nuclear transmutation using cyclotron for post-CMOS activation of Beta emitters
… nuclear transmutation and results in the desired beta emitting radioisotope. A microfabricated p-n diode on a silicon substrate coated with specific radioisotope precursors is used as the test basis of study. These results show promise for a broad impact in mass production of post-CMOS devices …
-
The determination of pure beta-emitters and their behaviour in a salt-marsh environment
… isolation and measurement of anthropogenic pure beta-emitting radioisotopes in low-level radioactive wastes and environmental samples. The research focussed on three key pure beta-emitting radioisotopes, namely 63Ni, 90Sr and 99Tc. Iron-55, which decays by electron capture, was also investigated. …
-
Adsorption on smooth electrodes: A radiotracer study
… and the use of radio-labeled isotopes, soft beta emitters, to study adsorption processes at smooth electrodes. The in situ radiotracer method is highly anion (molecule) specific and provides information on the structure and composition of the electric double layer. The emphasis of this …
-
Hot particle dosimetry using a wall-less tissue equivalent proportional counter
… hazard. Typically, hot particles are beta particle or alpha particle emitters and deposit their energy over very small distances in tissue making dose determinations through measurement or computation to the target tissues at risk such as epithelial cells in lung and gut and basal …
-
Enhanced corrosion of zirconium-based alloys in proximity to other metals : the "shadow effect"
… each cladding piece. They were high and low beta emitters, inert material and Zircaloy-2 in contact and non-contact at various separation distances. Post-irradiation examination of the cladding pieces showed: * Beta-radiation is not the main mechanism for the shadow effect. * Shadow corrosion …
-
Assessing and Modulating Tumor Dose Coverage of Unsealed Radionuclide Therapies using Voxel Dosimetry
… to error for radionuclides with average beta energy exceeding 0.5 MeV (32P, 90Y, 166Ho) with the DVK dose algorithm outperforming the LDM for realistic imaging voxel sizes and resolutions. The LDM dose algorithm slightly outperforms the DVK for mean dose calculation for the energetic beta …
-
DOSIMETRIC STUDY OF BETA-MINUS EMITTER PRASEODYMIUM-142 : APPLICATIONS IN MICROSPHERE BRACHYTHERAPY FOR HEPATOCELLULAR CARCINOMA AND BRACHYTHERAPY FOR OCULAR SQUAMOUS CELL CARCINOMA
A dosimetric study of the beta-minus emitter Praseodymium-142 (¹⁴²Pr) was performed and two main innovative applications of this source in brachytherapy are proposed: microsphere brachytherapy and eye plaque brachytherapy. ¹⁴²Pr (96.3% beta and 3.7% gamma) has recently gained increased attention …
-
Interference Effects of Urban Rubble on the Radioanalytical Analysis of Strontium
… yield, along with its daughter’s high energy beta decay (90Y at 2.281 MeV) make it one of several materials ideally used in radioisotope thermoelectric generators (RTGs) in remote corners of the globe. Unfortunately, many of these RTGs remain in service with little to no security around them. …
-
Development and Characterization of B7-H3-Targeted Radioimmunotherapies For The Treatment of Solid Tumors
… 100 mCi), a therapeutic beta-emitter, induced complete tumor regression and long-term survival of greater than 50% of mice harboring established syngeneic subcutaneous CT26 tumors, a radio-resistant colorectal cell type transfected with human B7-H3 (CT26 hB7-H3) compared …