Mohammah Ghannadi Maragheh

Newborn Screening Translation Research Initiative | NSTRI · Materials

Swelling and non-swelling properties of bentonite particles play an important role in their performance as well as their applications. Swelling bentonites, containing montmorillonite as the main constituent, are mainly used in drilling fluids, bonding sands in foundry molds, iron ore palletizing, and environmental sealing, while non-swelling ones a...

Surface modified adsorbent mesoporous silicate MCM-41 has been prepared by grafting thiol containing functional group onto mesoporous silicate MCM-41. XRD, N2 adsorption/desorption measurements, SEM, FT-IR, thermogravimetry and elemental analysis have been made to confirm the ordered mesoporous framework and the functionalization of the thiol group...

Amino-functionalized MCM-41 has been prepared by grafting amino containing functional groups onto mesoporous silicate MCM-41 and characterized by powder X-ray diffraction, N2 adsorption/desorption measurement, SEM, FT-IR, thermogravimetry and elemental analysis to confirm the ordered mesoporous structure and the functionalization of the amino group...

Five different samples of a new sorbent, modified mesoporous cerium(IV) silicate have been prepared with various mole ratios of Si/Ce and Cetyltrimethylammonium bromide (CTMABr) as template. XRD, nitrogen sorption, SEM, IR, thermogravimetry and sorption of radionuclides have been studied. Separation of Hg(II)-Th(IV), Hg(II)-Zr(IV) and Rb(I)-Zr(IV)...

The existing C-30 cyclotron at NRCAM is currently capable of emitting a proton beam with only Emax=30 MeV. To improve this Emax to higher energies of 250 MeV for proton therapy, this beam is injected into the conceptually designed Medical Proton Synchrotron accelerator. Prior to injection, the beam emittances in both x- and y-directions were measur...

Five different samples of mesoporous zirconium silicate have been prepared with various mole ratios of Si/Zr and Cetyltrimethylammonium bromide (CTMABr) as template. XRD, nitrogen sorption, SEM, IR, thermogravimetry and sorption of radionuclides have been studied. Separation of Cs(I)-Mo(VI), Sr(II)-Mo(VI), Cs(I)-Th(IV), Sr(II)-Th(IV), and Tl(I)-Th(...

Four different samples of mesoporous Sn(IV) silicate with varying mole ratio of Si/Sn have been used to study the sorption behavior of 18 radionuclides on these materials. Ion-exchange capacity, SEM, distribution coefficient and chemical stability have been studied and discussed. Separation of T1(I) from Th(IV), Cs(l) from Th(IV) and Cs(I) from Zr(...

Separation and purification of 133Xe from acidic solution containing uranium, 99Mo and 131I has been developed. In the first step of this work, uranium pellets were dissolved under pressure (8-15 bar) in 8M nitric acid solution. Then133 Xe and other gases were conducted to activated charcoal cold trap. Final purification of 133Xe from impurities su...

As was mentioned at the 2002 symposium, according to the Table 1 it has been decided by Iranian government to produce 6000 MWe nuclear energy by year 2020. Nuclear power plants will be constructed to produce this amount of energy in various part of the country and it is necessary to provide their fuels. For the fulfillment of this requirement, nucl...