Radiochemical technique optimization to measure uranium and thorium by α-spectrometry

2021 ◽  
Author(s):  
O. Fallatah ◽  
M. M. T. Qutub
Keyword(s):  
Technique Optimization

Astaxanthin–garlic oil nanoemulsions preparation using spontaneous microemulsification technique: optimization and their physico–chemical properties

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Seyedalireza Mortazavi Tabrizi ◽  
Afshin Javadi ◽  
Navideh Anarjan ◽  
Seyyed Javid Mortazavi Tabrizi ◽  
Hamid Mirzaei
Keyword(s):  
Antioxidant Activity ◽  
Particle Size ◽  
Subcritical Water ◽  
Chemical Properties ◽  
Polydispersity Index ◽  
Garlic Oil ◽  
Physico Chemical ◽  
Minimum Particle Size ◽  
Oil In Water ◽  
Technique Optimization

AbstractGarlic oil in water nanoemulsion was resulted through subcritical water method (temperature of 120 °C and pressure of 1.5 bar, for 2 h), using aponin, as emulsifier. Based on the prepared garlic oil nanoemulsion, astaxanthin–garlic oil nanoemulsions were prepared using spontaneous microemulsification technique. Response surface methodology was employed to evaluate the effects of independent variables namely, amount of garlic oil nanoemulsion (1–9 mL) and amount of provided astaxanthin powder (1–9 g) on particle size and polydispersity index (PDI) of the resulted nanoemulsions. Results of optimization indicated that well dispersed and spherical nanodroplets were formed in the nanoemulsions with minimum particle size (76 nm) and polydispersity index (PDI, 0.358) and maximum zeta potential value (−8.01 mV), using garlic oil nanoemulsion amount of 8.27 mL and 4.15 g of astaxanthin powder. Strong antioxidant activity (>100%) of the prepared astaxanthin–garlic oil nanoemulsion, using obtained optimum amounts of the components, could be related to the highest antioxidant activity of the colloidal astaxanthin (>100%) as compared to that of the garlic oil nanoemulsion (16.4%). However, higher bactericidal activity of the resulted nanoemulsion against Escherichia coli and Staphylococcus aureus, were related to the main sulfur bioactive components of the garlic oil in which their main functional groups were detected by Fourier transform-infrared spectroscopy.

scholarly journals A technique optimization protocol and the potential for dose reduction in digital mammography

2010 ◽  
Vol 37 (3) ◽  
pp. 962-969 ◽  
Author(s):  
Nicole T. Ranger ◽  
Joseph Y. Lo ◽  
Ehsan Samei
Keyword(s):  
Dose Reduction ◽  
Digital Mammography ◽  
Technique Optimization

Imaging technique optimization of tungsten anode FFDM system

2009 ◽  
Author(s):  
Biao Chen ◽  
Andrew P. Smith ◽  
Zhenxue Jing ◽  
Elena Ingal
Keyword(s):  
Imaging Technique ◽  
Technique Optimization ◽  
Tungsten Anode

Multislice Computed Tomography Colonography: Technique Optimization

2001 ◽  
pp. 216-225
Author(s):  
Andrea Laghi ◽  
Valeria Panebianco ◽  
Carlo Catalano ◽  
Riccardo Iannaccone ◽  
Filippo G. Assael ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Multislice Computed Tomography ◽  
Computed Tomography Colonography ◽  
Technique Optimization

MDCT and MRI of the ampulla of Vater (part I): technique optimization, normal anatomy, and epithelial neoplasms

2015 ◽  
Vol 40 (8) ◽  
pp. 3274-3291 ◽  
Author(s):  
Francesco Alessandrino ◽  
Aleksandar M. Ivanovic ◽  
Eric U. Yee ◽  
Dejana Radulovic ◽  
Daniel Souza ◽  
...  
Keyword(s):  
Ampulla Of Vater ◽  
Normal Anatomy ◽  
Technique Optimization ◽  
Epithelial Neoplasms
Sign in / Sign up

Export Citation Format

Share Document