40 research outputs found
Image Segmentation by Using Threshold Techniques
No full textImage segmentation (IS) is a procedure by which provided picture can be subdivided into many segments and to observe every segment included in the image. The desired result could be searched by observing them and that information we get is helpful for high standard machine vision software. The difficulties of IS has large problems for computer vision. Many procedures which came under IS are Edge based IS (EBIS), Region based IS (RBIS), Threshold based IS (TBIS). The result of observing image which is relying upon the reliability of IS, but exact division of a picture is most difficult issue. The technique we are using in this article is thresholding based segmentation (TBS). The studied article of IS by reader is beneficial for analyzing the suitable IS techniques and also for improvement of efficiency, performance and major goal, that helps in building latest algorithms
Evaluation and development the routing protocol of a fully functional simulation environment for VANETs
No full textCorrigendum to “Exploring the potential of BBNCo glasses: Physical, optical, and radiation shielding analysis” [Opt. Mater. 142 (2023) 113976] (Optical Materials (2023) 142, (S0925346723005487), (10.1016/j.optmat.2023.113976))
No full textThe authors regret M.A.M. Uosifa, Shams A.M. Issab, c, A.S. Abouhaswad,e, A.M.A. Mostafaa, Ali Attaa, Hesham M.H. Zakalyc,f,g,*** > aPhysics Department, College of Science, Jouf University, P.O. Box: 2014, Sakaka, Saudi Arabia bDepartment of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia cPhysics Department, Faculty of Science, Al-Azhar University, Assiut, 71452, Egypt dPhysics Department, Faculty of Science, Menoufia University, Shebin El-Koom, Menoufia, Egypt eInstitute of Natural Science and Mathematics, Ural Federal University, Ekaterinburg 620002, Russian Federation fIstinye University, Faculty of Engineering and Natural Sciences, Computer Engineering Department, Istanbul, 34396, Turkey gInstitute of Physics and Technology, Ural Federal University, 19 Mira St., 620002, Yekaterinburg, Russia *Corresponding author. Physics Department, College of Science, Jouf University, P.O. Box: 2014, Sakaka, Saudi Arabia. **Corresponding author. Department of Physics, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia. *** Corresponding author. Physics Department, Faculty of Science, Al-Azhar University, Assiut, 71452, Egypt. E-mail addresses: [email protected] (M.A.M. Uosif), [email protected] (S.A.M. Issa), [email protected] (H.M.H. Zakaly) The authors would like to apologise for any inconvenience caused. © 2023 Elsevier B.V
Effect of natural and synthetic fruit coatings on the postharvest quality of kinnow mandarins
No full textNatural products are more preferred by consumers now-a-days over the synthetic ones. Therefore a natural fruit coating was developed from natural ingredients (shellac, rosin, gum arabic, water and ethanol from sugar industry) without ammonia or morpholine as an alternative to the synthetic coatings. So this research was devised to compare the effects of this newly developed natural fruit coating (with 9% total solids) with those of synthetic one (polyethylene based ammonia containing wax with 21% total solids) on the postharvest quality of kinnow (Citrus reticulata Blanco) mandarins. The kinnow mandarins were either coated with natural or synthetic fruit coatings or were left uncoated and stored at 5±2°C with 85-90% relative humidity for 63 days with five replications for each treatment. The results showed that both fruit coatings significantly (p0.05) changes in total soluble solids and fruit acidity were recorded for all the treatments. Furthermore the difference between natural and synthetic fruit coatings was non-significant (p>0.05). Therefore, it could be suggested that the natural fruit coating is a good alternative of the synthetic fruit coating
The time-varying propagation between oil market and stock market- An evidence of Pakistan Stock Exchange, PSX
No full textThe prime objective of this study is to find out the time-varying propagation between the oil market and stock market. For this purpose the crudeoil future contracts in real time was chosen as proxy for an oil market determinant while two indices at Pakistan stock exchange were taken as stock market determinants. In this regard KSE100 index and KMI30 index (the Islamic index) were considered as stock market variables to examine short run or long run relationship amongst the oil market and stock market. The analysis was based on time series data. The weekly closing prices were collected for the period ranging from June, 2009 to August, 2020 with 583 total observations. The study used the Johanson and Juselius (1990) technique to examine the long run cointegration between the variables. The ADF test postulated that all series were at 1(0) nonstationary but it became stationary when taking it at 1st difference. The Johanson cointegration test examined that Pakistani stock indices were cointegrated in the long run with the crudeoil. Once Johanson test founded the long run relationship among the variable, VECM is used to examine the short run dynamics of long run equilibrium relationship. The variance decomposition revealed that fluctuations in the oil prices were strongly endogenous from its own variance in the short run but strongly exogenous in the long run from others independent variable in the model. The impulse response function demonstrated that response of KSE100 and KMI30 both to the shock of crudeoil showed increasing trend in the short run but in long run they have constantly decreasing trend
Effective separation and analysis of E- and Z-guggulsterones in Commiphora mukul resin, guggulipid and their pharmaceutical product by high performance thin-layer chromatography-densitometric method
No full textDynamic Volatility in Stock Market Returns: An Evidence from Islamic Index and Kse100 Index of Pakistan
No full textThis paper examines the time-varying volatility in the stock returns at Pakistan Stock Exchange (PSX). Time series data was used to gauge the volatility in the stock returns trough time series analysis techniques including the ADF, ARCH and GARCH family modeling for this purpose. The volatility concept is much familiar in the stock market analysis especially in the future decision making process by the investor. To further investigate this phenomenon, an Islamic index and KSE100 index at PSX were chosen with daily data ranging from June, 2009 to august 2020 with the total daily observations of 2772. The data was collected from investing.com. The ADF and Phillips-Perron (PP) unit root tests were performed to check the stationary of the series, where it was confirmed that the stock return of the KMI30 index as well as KSE100 index were no unit root at 1(0). The ARCH LM lest confirmed the ARCH effects in the KMI30 and kSE100 indices. The GARCH family modeling including GARCH (1,1), Mean GARCH (1,1), EGARCH (1,1), and TGARCH (1,1) were used. The results revealed that stock returns of the Islamic index (KMI30) and KSE100 index at Pakistan Stock Exchange (PSX) have the feature of volatility clustering. It is also gauged that stock returns of KMI30 index and kSE100 index are more volatile to bad news than good news. The study further explored that holders of such stocks can diversify their investment in some other related stocks to get arbitrage opportunity
Prevalence of Toxoplasma gondii, Neospora caninum, and Sarcocystis Species DNA in the Heart and Breast Muscles of Rock Pigeons (Columbia livia)
No full textLittle is known about the prevalence of protozoan parasites in the muscles of rock pigeons (Columbia livia). The muscles from 54 (heart from 45 and breast from 54) rock pigeons were examined for DNA of Toxoplasma gondii, Neospora caninum, and Sarcocystis species using PCR. Twenty-four were female and 30 were males. The birds were part of flocks of pigeons housed at the tombs of saints in Lahore, Pakistan. Birds that died or were euthanized due to poor health were submitted for necropsy at the Department of Parasitology, University of Veterinary and Animal Sciences, Lahore, Pakistan, where DNA isolations and PCR were conducted. Nineteen (35.1%) of the birds were positive for T. gondii DNA. Seven males and 12 females were positive. Breast tissue was always infected in T. gondii positive birds, while the heart was infected in 13 (28.8%) of breast positive birds. Five (9.2%) of the pigeons, 2 males and 3 females, were positive for N. caninum. The distribution of N. caninum DNA was more variable in the muscles of pigeons than T. gondii and was found only in the heart of 1 (female), heart and breast muscle of 2 (male), and only the breast muscle of 2 birds (female). One of the 54 rock pigeons (female) was positive for both T. gondii (heart and breast) and N. caninum (heart only). Two of the positive Neospora caninum amplicons were sequenced and had 97% nucleotide identity with N. caninum isolates. Sarcocystis DNA was not found in any bird. The prevalence of T. gondii in rock pigeons and their predation by cats suggest that they may play an unrecognized role in maintaining environmental contamination with T. gondii oocysts by cats. Our study indicates that rock pigeons are intermediate hosts of N. caninum and this information will aid in understanding the epidemiology of N. caninum
