In this work, polysulfone (PSf) mixed matrix membranes were prepared by incorporating modified montmorillonite with lysine amino acid (MMT-Lys) for arsenic removal from water. Different tests including XRD, zeta potential, FE-SEM, contact angle, and pure water flux (PWF) were carried out to characterize modified MMT and fabricated mixed matrix membranes. XRD analysis showed that MMT was success...

BACKGROUND The maximum standardized uptake value (SUVmax) is a common clinical parameter for quantification in F18-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT), but it is influenced by image reconstruction. The aim of this study was to analyze the association of SUVmax deviations related to point spread function (PSF) and time-of-flight (TOF) reconstruction w...

We conduct TinyTim modeling of NICMOS camera 2 PSFs to assess limits to the accuracy of PSF subtraction imposed by color dependence, OTA focus breathing, and cold mask wiggling. The results suggest that effects of both cold mask wiggling and focus breathing can be described as a noise in a PSF-subtracted image, well above 20% of the PSF signal in narrow band filters, with a spatial scale of a f...

The present study evaluated whether the Preschool Behavior Screening System (PBSS) translated into Spanish was able to reliably provide information regarding the behaviors and emotions of preschool children. The PBSS Parent Spanish Form (PBSS-PSF) could fill a void as the first multi-stage emotional and behavioral screening system in Spanish. The PBSS-PSF was field tested on 49 Spanish-speaking...

This paper investigates the implementation of Periodic Symmetric Functions (PSF) in single electron tunneling technology. First, we discuss the procedure of expressing arithmetic and logic operations as generalized PSFs. Second, we propose a building block that performs a multiple input PSF. The block we propose can be used for the computation of any function that is or can be expressed as a PS...

The point-spread function (PSF) of a camera can seriously affect the accuracy of radiometric calibration and measurement. We found that the PSF can produce a 3.7% difference between the apparent measured radiance of two plaques of different sizes with the same illumination. This difference can be removed by deconvolution with the measured PSF. To determine the PSF, many images of a collimated b...

We present results of concurrent maximum likelihood restoration implementations with spatially-variant point spread function (SV-PSF) on both synthetic and real datasets from the Hubble Space Telescope (HST). We demonstrate that SV-PSF restoration exhibits superior performance compared to restoration with a spatially invariant PSF. We realize concurrency on a network of Unix workstations, and a...

Three-dimensional microscopy by computational deconvolution methods requires accurate knowledge of the point spread function (PSF) that characterizes the microscope. Experimental PSF’s can only be measured over small regions about focus because the small objects necessary for PSF measurement are dim. Theoretical computation of the PSF requires accurate knowledge of all the experimental setup pa...

Improved preservation techniques have the potential to improve transplant outcomes by better maintaining donor organ quality and by making more organs available for allotransplantation. Persufflation, (PSF, gaseous oxygen perfusion) is potentially one such technique that has been studied for over a century in a variety of tissues, but has yet to gain wide acceptance for a number of reasons. A p...

Tight ultrafiltration (UF) has increasingly been developed to overcome the low selectivity of conventional UF membranes towards soluble contaminants. In this work, a tight structure polysulfone-based (PSf) membrane was prepared by blending PSf with polyethylene glycol (PEG400), ZnO nanoparticle (ZnO-Np), and acetone (Ac) in dimethylacetamide (DMAc). The influences Ac/DMAc ratio (1: 15 1:25) PEG...