Consumption of edible oils is increasing tremendously regardless their high prices. As a result, the global production vegetable has also been growing constantly. This may be related to population growth and associated demands consumers. In this particular work, ten crude food seed Ethiopian origin were extracted in our lab analyzed for chemical composition by gas chromatography mass spectrosco...

Over the past decade surgery for sinonasal malignancies encroaching into the anterior skull base (ASB) has evolved from open craniofacial resection to the use of minimally invasive transnasal endoscopic approaches. Using these techniques, ASB reconstruction is most often performed in a multilayer fashion with autologous free grafts (fascia lata or iliotibial tract) which leads to the production...

Existing shape from focus (SFF) techniques cannot preserve depth edges and fine structural details a sequence of multi-focus images. Moreover, noise in the images affects accuracy map. In this paper, novel enhancement algorithm for SFF based on an adaptive weighted guided image filtering (AWGIF) is proposed to address above issues. The AWGIF applied decompose initial map which estimated by trad...

All-vanadium redox flow battery (VRFB) is a promising energy storage technique. Flow fields play crucial role in distributing the electrolyte into electrode uniformly, but their performance characteristics under different parameters are still unclear. In this work, taking total pressure drop and overpotential as characterizations, influence of operating conditions on serpentine field (SFF) inte...

The major impulse-like excitation in the speech signal is due to abrupt closure of vocal folds, which takes place at glottal instant (GCI) or epoch each cycle. GCIs are used many areas science and technology, such as prosody modification, voice source analysis, formant extraction synthesis. It difficult observe these discontinuities (corresponding GCIs) because superimposed time-varying respons...

In this paper, we propose a novel sampling-based planner for multi-goal path planning among obstacles, where the objective is to visit predefined target locations while minimizing travel costs. The order of visiting targets often achieved by solving Traveling Salesman Problem (TSP) or its variants. TSP requires define costs between individual targets, which - in map with obstacles compute mutua...

In precision machining, the milling tool’ geometry has a great influence on milled surface quality. The research tool state monitoring was mainly based one-dimensional signals and two-dimensional images, which could indirectly obtain wear area, but it not provide volume of breakage thereby making difficult to achieve quantitative analysis wear. This paper proposed three-dimensional (3D) reconst...

This paper reports the precision of shape-from-focus (SFF) imaging according to texture frequencies and window sizes a focus measure. SFF is one various depth measurement techniques for optical imaging, such as microscopy endoscopy. measures an object measure, which generally computed with fixed window. The size affects performance should be adjusted object. In this study, we investigated diffe...