background this study demonstrates the removal efficiency of phenol from aqueous solutions by electrocoagulation process using aluminum electrodes and also investigates solution chemistry and polymeric natural organic matters on removal efficiency objectives: the main aim of this work was to focus on the removal of phenol by electrocoagulation process using aluminum electrodes. materials and me...

background: the purpose of the present study was to assess the efficiency of ultrasound/hydrogen peroxide processes and ultrasound/hydrogen peroxide/zno nanoparticles in the removal of blue cat 41 dye from aqueous solutions. methods: zno nanoparticles were prepared using the hydrothermal method. variables including ph, concentration of zno nanoparticles, initial dye concentration, concentration...

Background detection and removal in video sequences for tracking motion objects is an important part of tracking process. It's clear that removal static background leads to tracking motion object and analyzing their movements more accurately. Older techniques for background removal, only use spatial features of image and remove background by focusing on color, texture ..., but newer techniques ...

We address the problem of reconstructing a scene background from a set of photographs featuring several occluding objects. We assume that the photographs are obtained from the same view point and under similar illumination conditions. Our approach consists of defining the scene background as a labeling over the set of input exposures, then assigning each labeling a cost, and finally minimizing ...

The investigation of tissue magnetic susceptibility and the resultant magnetic field offers a new avenue for quantitative tissue characterisation by MRI. One crucial step in mining the phase and field data for relevant tissue information is the correction of externally induced field shifts. This article outlines a multistep approach comprising several methodologies for background field removal....

In this paper, the problem of estimating the background of a spectrum is addressed. We propose to fit this background to a low-order polynomial, but rather than determining the polynomial parameters that minimise a least-squares criterion (i.e. a quadratic cost function), non-quadratic cost functions well adapted to the problem are proposed. To minimise these cost functions, we use the half-qua...

background: the management of deep carious lesions can be done by various techniques but residual caries dilemma still persists and bacterial reduction in cavities treated by either partial or complete caries removal techniques is debatable. so the objective of the present randomized clinical trial was to compare microbial counts in cavities submitted to complete caries removal and partial cari...

background: natural organic matter is the cause of many problems associated with water treatment such as the presence of disinfection by-products (dbps) and membrane fouling during water filtration. in this study, the performance of the peroxi-electrocoagulation process (pep) was investigated for the removal of humic acids (has) from aqueous solutions. methods: pep was carried out for the remov...

background:  little is known about trends and predictors of hardware related infection following open reduction and internal fixation (orif) of extremity fractures, one of the major causes of failure following orif. the present study was designed and conducted to determine trends and predictors of infection-related hardware removal following orif of extremities using a nationally representative...