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525 articles for “Density”
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Review ArticleOpen accessEvery word in the titleSubfractions of Low-Density-Lipoprotein: Which is the Most Atherogenic?Anastasia Vladimirovna Poznyak, Vasily Nikolaevich Sukhorukov, Mikhail Аleksandrovich Popov et al.Atherosclerosis is a widespread disease of the arteries, which manifests itself in the narrowing of the lumen of the vessel due to the formation of plaque on its walls. Despite an impressive history of study, atherosclerosis still leaves room for researchers. This is realized due to the complexity of pathogenesis, in which important roles are assigned to a variety of … …OnLine Journal of Biological Sciences, Vol. 23, Issue 4 · 3 Sep 2023 · 4,697 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleHigh Density Salt and Pepper Noise Filter based on Shepard Interpolation MethodChaipichit Cumpim, Rachu PunchalardThis paper has proposed the technique in order to remove salt-and-pepper noise from the corrupted image. The proposed scheme consists of two steps. The first, the adaptive median filter is applied to noisy image for detecting noisy and noise-free pixels. Finally, the output image of previous step will be divided into many non-overlapping windows of which the noise-free pixel values … …Journal of Computer Science, Vol. 13, Issue 7 · 20 Jul 2017 · 7,231 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleREMOVAL OF HIGH DENSITY IMPULSE NOISE USING MORPHOLOGICAL BASED ADAPTIVE UNSYMMETRICAL TRIMMED MID-POINT FILTERS. Saravanakumar, A. Ebenezer Jeyakumar, K. N. VijeyakumarA Morphological based Adaptive Unsymmetrical Trimmed Mid-Point Filter (MAUTMPF) for the restoration of gray scale images corrupted by salt and pepper noise for varying noise densities is proposed in this study. Images corrupted by impulsive noise severely hinder subsequent image processing tasks, such as edge detection, image segmentation, object recognition, etc. Therefore, it is absolutely essential to restore the original … …Journal of Computer Science, Vol. 10, Issue 7 · 17 Jun 2014 · 6,543 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDevelopment and Evaluation of a Low-Density Biomass Feeding System for Fluidized Bed GasifiersA. E. Ghaly, A. Ergudenler, S. Alsuhaibani, V. V. RamakrishnanFor efficient operation of a biomass gasifier, the biomass material must be fed continuously to the system. A feeding system for chopped straw and rice husk was designed, constructed and evaluated. It consisted of: a frame, a hopper, an auger, two agitators, a drive system and a power unit. Initial testing showed that wheat straw and rice husk, being highly … …American Journal of Engineering and Applied Sciences, Vol. 6, Issue 3 · 7 Nov 2013 · 8,039 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleDensity Functional Theory Based Quantitative Structure Activity Relationship Study of 2,5-Bis(1-Aziridinyl)-p-Benzoquinones with Lymphoid LeukemiaBahjat A. Saeed, Rita S. EliasProblem statement: QSAR techniques increase the probability of success and reduce time and coast in drug discovery process. The study presented QSAR investigation on 32 bioactive aziridinylbenzoquinones that have activity against lymphoid leukemia. Approach: Molecular descriptors, molecular weight, total energy, hardness, chemical potential, electrophilicity index, HOMO and LUMO energies were calculated. Initial geometry optimizations were carried out with the AM1 … …American Journal of Applied Sciences, Vol. 7, Issue 7 · 31 Jul 2010 · 7,211 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImprovement of Nuclear Track Density Measurements Using Image Processing TechniquesA. Mostofizadeh, X. Sun, M. R. KardanThe well known edge detection methods were applied to evaluate accuracy and precision of nuclear track densitometry of polycarbonate detector. All measurements carried out in two cases of before and after improvement of track images. Considering the overlapping phenomenon -including double and triple tracks- experimental and statistical results showed that not only each particular edge detection method affects the accuracy … …American Journal of Applied Sciences, Vol. 5, Issue 2 · 28 Feb 2008 · 7,427 accessesView PDFCite
Research ArticleOpen accessIn the keywordsMANAT: A Filtering-Based Method for Denoising Nonuniform Photogrammetric Point CloudsYun Sin Chong, Hui Hui Wang, Yin Chai WangThree-dimensional point clouds reconstructed from photogrammetry often exhibit noise and non-uniform sampling density, which challenges existing denoising methods that rely on precise normal estimation or extensive parameter tuning. This study presents the Multi Attribute Neighbour Attraction Technique (MANAT), a novel single-stage, density-adaptive filtering method that jointly leverages spatial position, surface normals, and color as inherent photogrammetric attributes for unified noise … …Journal of Computer Science, Vol. 22, Issue 4 · 28 Apr 2026 · 1,524 accessesView PDFCite
Research ArticleOpen accessIn the keywordsAnalysis of the Physical-Hydrical Behavior of Massouhoin Coconut Tree Wood in TogoEssey Agbédidi Kossi, Amey Bollanigni Kossi et al.Wood is a very complex and anisotropic material whose properties are significantly influenced by its age and plantation areas. The purpose of this study is to determine the density distribution model of COCOS NUCIFERA (coconut tree) wood from Togo and to analyze its water behavior of physical and water properties 932 wood specimens are selected from a tree trunk from … …American Journal of Applied Sciences, Vol. 21, Issue 1 · 11 Dec 2024 · 8,189 accessesView PDFCite
Research ArticleOpen accessIn the keywordsBulk and Interface Configuration on the Performances of Perovskite Solar CellsSankara Issiaka, Soumaïla Ouédraogo, Daouda Oubda et al.The ongoing search for energy conversion technologies that are more efficient, affordable, and sustainable than traditional solar cells have led researchers to look at other technologies. Among these technologies, perovskite-based solar cells seem increasingly credible, as they have the potential to achieve high energy conversion efficiencies that rival or even surpass those of silicon solar cells, which currently dominate the … …American Journal of Applied Sciences, Vol. 20, Issue 1 · 7 Nov 2023 · 6,018 accessesView PDFCite
Research ArticleOpen accessIn the keywordsProduction of Bacillus Subtilis as Biological Fertilizer by Biotransformation of Corn Steep LiquorXiaojie Ren, Baoyue Liu et al.Corn steep liquor is a kind of intractable organic waste liquidproduced during the processing of corn starch. But it is rich in nutrients,soluble protein, and amino acids and it could be used as a nitrogen source inthe fermentation industry. Many starch processing enterprises cannot directlyutilize corn steep liquor and choose to discharge it directly, thus causingenvironmental pollution. Studies have shown … …American Journal of Biochemistry and Biotechnology, Vol. 18, Issue 4 · 10 Nov 2022 · 7,382 accessesView PDFCite