Science Journal of University of Zakho最新文献

{"title":"NITRIFYING AND PATHOGENIC BACTERIAL FLUCTUATION DURING NITROGEN REMOVAL FROM WASTEWATER IN ZAKHO CITY/IRAQ","authors":"K. A. Mohammed, M. Umer, Yasir M. Alyazichi","doi":"10.25271/sjuoz.2023.11.2.1058","DOIUrl":"https://doi.org/10.25271/sjuoz.2023.11.2.1058","url":null,"abstract":"The high concentration of nitrogen (N) compounds in wastewater was found to be creating a reason of eutrophication, effect the biodiversity of aquatic ecosystems and human health. The aim of this study is to reduce harmful N forms from wastewater by biological nitrogen transforming (BNT) bacteria and to investigate the fluctuation of ammonium oxidizing bacteria (AOB), nitrite oxidizing bacteria (NOB), and pathogenic bacteria during this process, so compost representative. A sample of municipal wastewater was taken, and then subjected to the treatment process of BNT, which was subdivided into three stages of ammonification, nitrification, and denitrification. The result revealed that nitrifying bacteria were flocculated during biological nitrogen transformation, like AOB and NOB isolated until obtaining colonies during the nitrification process, by liquid mineral solution and Agar-Agar then calculated. The AOB count was 468 CFU/ml and NOB was 2130 CFU/ml in the sample. The existence of coliform bacteria, especially E. coli raises the possibility of water contamination by pathogens bacteria that cause many serious illnesses in human. Therefore, Mac-Conkey agar was used for the isolation of total coliform bacteria through the BNT process because it is selective and also differentiating agar that specialized in the growth of gram- negative bacteria. Total coliform bacteria decreased gradually, before ammonification (556 CFU/ml), after ammonification (226 CFU/ml), after nitrification (154 CFU/ml) and after denitrification (45 CFU/ml) that have been determined and indicated that further chemical disinfection like chlorination or ozonation were required for complete sterilization of pathogenic bacteria. The study concluded that all harmful forms of N and total coliform bacteria that cause human and ecosystem deleterious were reduced by BNT.","PeriodicalId":21627,"journal":{"name":"Science Journal of University of Zakho","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85649582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"RVMF: RELIABLE ROUTING METHOD FOR VEHICULAR AD HOC NETWORKS USING MOTH-FLAME AND FIREFLY OPTIMIZATION ALGORITHMS","authors":"Soran A. Pasha","doi":"10.25271/sjuoz.2023.11.2.1005","DOIUrl":"https://doi.org/10.25271/sjuoz.2023.11.2.1005","url":null,"abstract":"With the advancement of wireless communication technology, the intelligent transportation system (ITS) has attracted the attention of vehicle companies and academic researchers. Recently, vehicular ad hoc networks (VANETs) as a leading genuine technology have received serious attention as a kind of mobile ad hoc network (MANET) to ensure the safety of vehicles, drivers, and passengers. However, these networks face many challenges due to the mobility of vehicle nodes, wireless communication, and frequent topology changes. One of the crucial issues of these networks is a cluster-based routing scheme with the ability to provide quality of service (QoS) parameters. A clustering scheme is an appropriate method for increasing the scalability of VANETs. In a cluster-based routing scheme, the cluster head (CH) is responsible for receiving data from its member nodes, and aggregating and transferring data to the next CH node. On the other hand, providing a suitable clustering method is NP-hard problems and meta-heuristic algorithms are suitable for solving these problems. A scalable and reliable routing scheme is necessary and essential in VANETs. In this paper, a routing method based on the clustering technique is presented considering the moth-flame optimization (MFO) algorithm for clustering and the Firefly optimization algorithm (FoA) with a suitable fitness function for routing between CHs. The simulation of the proposed method with MATLAB software shows that the proposed RVMF method improves the parameters of packet delivery rate (PDR), latency, and throughput.","PeriodicalId":21627,"journal":{"name":"Science Journal of University of Zakho","volume":"336 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89914292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"VIRULOTYPING OF LISTERIA MONOCYTOGENES ISOLATED FROM HUMAN AND FOOD PRODUCTS SAMPLES USING MULTIPLEX PCR IN DUHOK PROVINCE, IRAQ","authors":"A. Al-Brefkani, N. Rasheed, N. Hussein","doi":"10.25271/sjuoz.2023.11.2.994","DOIUrl":"https://doi.org/10.25271/sjuoz.2023.11.2.994","url":null,"abstract":"Listeria monocytogenes is a facultative intracellular, food-borne zoonotic-bacterium causing life-threatening infections worldwide with a significant mortality rate in both humans and animals. The aim of the study was to examine the existence of five crucial virulence-associated genes (inIA, inIB, inIC, inIJ and prfA) in 48 L. monocytogenes isolates that were obtained from human and different food products using multiplex Polymerase Chain Reaction (PCR). The most frequent genes among isolates were inIC (93.8%), inIB (91.7%) and inIJ (83.3) followed by prfA (81.2%) and inIA (79.2%). Regardless of the source of bacteria, all tested isolates showed the prevalence of multiple virulence-associated genes. The presence of three virulence genes was detected in 20.8%, four of five virulence genes were found in 33.3% of isolates, and 45.8% of isolates carried all five virulence genes. In conclusion, the presence of potential virulence genes increases the pathogenicity of L. monocyogenes. Furthermore, the occurrence of multiple virulence related genes in a single isolate may imply the presence of highly virulent isolates. To investigate the connection between those genes and clinical outcomes, more research is needed.","PeriodicalId":21627,"journal":{"name":"Science Journal of University of Zakho","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78358976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SPATIAL DISTRIBUTION OF ATMOSPHERIC POLLUTION IN DUHOK URBAN AREA BY USING GIS TOOLS","authors":"B. Khaled, Dereen JM Albeyboni, Bayan Hazim Ahmed, Ghariba Y. Haji, Sami MA Youssef","doi":"10.25271/sjuoz.2023.11.2.939","DOIUrl":"https://doi.org/10.25271/sjuoz.2023.11.2.939","url":null,"abstract":"Air pollution is becoming a serious challenge in thickly populated areas in the world. The air pollution in Kurdistan region is clearly noticed, especially in areas where pollution sources and human population are concentrated. Urbanization and economic growth are proceeding at a rapid pace, accompanied by increasing emissions of a mixture of greenhouse gases especially from transporting sector, that positively contribute to accelerate climate change around the globe, and also have impacts on public health and vegetation. In order to decrease the effects that caused by atmospheric pollution, suitable monitoring systems are urgently needed that can rapidly and reliably detect and quantify polluting sources and concentration for monitoring by local authorities in order to restrain more damage of the current pollution levels. In this study, GIS with portable gas detector (K-60 IV) KELISAIKE safety equipment, China, have been used to assess the status of NOx, VOCs and noise pollution at 54 randomly selected urban locations of Duhok city. The measurements were taken during the week and weekend days started from 9 am until 4 pm. The results showed that there is a variation in the values of the three variables NOx, VOCs and noise, where the highest values recorded during working days in the locations distributed along the highway and the city center with heavy traffic load and dense human population in comparison to lowest values obtained during weekend days in locations distributed outskirt of the city with lower population and traffic loads. Therefore, likely such connections exist between the urban traffic density and  low air pollution quality within urban locations around Duhok city.","PeriodicalId":21627,"journal":{"name":"Science Journal of University of Zakho","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86801487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EVALUATION OF CANDIDA ALBICANS AND ITS ASSOCIATED RISK FACTORS AMONG MARRIED WOMEN OF REPRODUCTIVE AGE IN ZAKHO CITY, KURDI-STAN REGION, IRAQ","authors":"Shivan Othman Haydar, I. Naqid","doi":"10.25271/sjuoz.2023.11.2.976","DOIUrl":"https://doi.org/10.25271/sjuoz.2023.11.2.976","url":null,"abstract":"Background: Candida vaginitis is a major fungal infection of the female genital tract ranging from mucosal to systemic infection.  Candida species has remained a major public health issue affecting women globally.\u0000Objectives: The aim of this study was to evaluate the prevalence of Candida albicans and its associated risk factors among married women with signs and symptoms of vaginitis referring to Obstetrics and Gynecological Hospital at Zakho City, Iraq.\u0000Methods: Vaginal samples were collected from 150 symptomatic women aged 18-48 years from October 2021-to April 2022 using two sterile cotton swabs. Wet mount was initially performed from first swab for the presence of budding yeast cells, and pseudo-hyphae of Candida infection. The second collected swabs were cultured on Sabouraud dextrose agar and incubated at 35°C for 24-48 hrs. C. albicans was then detected using morphologic characteristics of the colony.  Candida colonies were finally confirmed by germ tube test.\u0000Results: Overall, 58 (38.67%) C. albicans were diagnosed. The highest rate of infection was reported in the age group of 31-40 years (45%) and non-educated people (37%), but statistically not significant (p>0.05). C. albicans was also higher in women who used pills as a contraceptive (45.45%) than other types of contraceptives. Women who had low number of births were significantly associated with C. albicans (OR; 1.01, 95% CI; 0.94-1.26, p=028). C. albicans was also significantly associated among symptomatic patients with vaginal itching (67.19%) (OR; 9.69, 95% CI; 4.52-20.79, p=0.001) and vaginal pH level > 4.5 (OR; 0.39, 95% CI; 0.19-0.82, p=0.001). C. albicans was also significantly higher among participants who had whitish vaginal discharges (96.67%) (OR; 8.0, 95%CI, 3.8-16.85, p=0.001), and yellow-green vaginal discharges (58.62%) (OR; 0.12, 95% CI; 0.01-0.93, p=0.007).\u0000Conclusions: C. albicans is a relatively common gynaecological problem among married women in our region. C. albicans is significantly higher among child bearing age women who had vaginal discharges and itching in our study. These results call for preventive measures to protect women against Candidiasis. Therefore, public health education and campaign should be implemented.","PeriodicalId":21627,"journal":{"name":"Science Journal of University of Zakho","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83581040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AN EMPIRICAL COMPARISON OF NEO4J AND TIGERGRAPH DATABASES FOR NETWORK CENTRALITY","authors":"Bahzad Charbuty, Abdulhakeem Othman Mohammed","doi":"10.25271/sjuoz.2023.11.2.1068","DOIUrl":"https://doi.org/10.25271/sjuoz.2023.11.2.1068","url":null,"abstract":"Graph databases have recently gained a lot of attention in areas where the relationships between data and the data itself are equally important, like the semantic web, social networks, and biological networks. A graph database is simply a database designed to store, query, and modify graphs. Recently, several graph database models have been developed. The goal of this research is to evaluate the performance of the two most popular graph databases, Neo4j and TigerGraph, for network centrality metrics including degree centrality, betweenness centrality, closeness centrality, eigenvector centrality, and PageRank. We applied those metrics to a set of real-world networks in both graph databases to see their performance. Experimental results show Neo4j outperforms TigerGraph for computing the centrality metrics used in this study, but TigerGraph performs better during the data loading phase.","PeriodicalId":21627,"journal":{"name":"Science Journal of University of Zakho","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72679049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"THE NEW RANK ONE CLASS FOR UNCONSTRAINED PROBLEMS SOLVING","authors":"A. Mustafa","doi":"10.25271/sjuoz.2023.11.2.1049","DOIUrl":"https://doi.org/10.25271/sjuoz.2023.11.2.1049","url":null,"abstract":"One of the most well-known methods for unconstrained problems is the quasi-Newton approach, iterative solutions. The great precision and quick convergence of the quasi-Newton methods are well recognized. In this work, the new algorithm for the symmetric rank one SR1 method is driven.\u0000The strong Wolfe line search criteria define the step length selection. We also proved the new quasi-Newton equation and positive definite matrix theorem. Preliminary computer testing on the set of fourteen unrestricted optimization test functions leads to the conclusion that this new method is more effective and durable than the implementation of classical SR1 method in terms of iterations count and functions.","PeriodicalId":21627,"journal":{"name":"Science Journal of University of Zakho","volume":"120 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77406805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EVALUATIONS OF DIFFERENT MODELS FOR PREDICTING MERCHANTABLE VOLUME OF PINUS BRUTIA TEN. IN DUHOK GOVERNORATE","authors":"Hanaa Naef Abdulqader, M. Obeyed","doi":"10.25271/sjuoz.2023.11.2.997","DOIUrl":"https://doi.org/10.25271/sjuoz.2023.11.2.997","url":null,"abstract":"This study was initiated with the main objective of evaluating the prediction power of previously 24 published models in the literature, developed for estimating the merchantable volume of natural stands of Pinus brutia Ten. The estimation was based on measuring the breast diameter (D), tree height (h), and absolute form quotient (F) of 120 pine trees (Pinus brutia Ten.) from 2 natural stands situated to the east of Duhok governorate. Six indicators of Fit test statistics, namely Adjusted coefficient of determination (R2- adj.) standard error of estimate (SEE), mean absolute error (MAE), Durbin-Watson statistic (D-W), p-value, and mean biased error (Bias) were used to test the performance of the applied models. The result from the centroid model was considered a reference method for the evaluation during this study. The results indicated that the square root –y logarithmic-x offered the highest performance followed by the double square root model.  The square root –y logarithmic-x (equation 11) attributed more than 90% of the variation in merchantable volume to variations in D, h, and F. Furthermore, the mean absolute error of prediction of this model was 0.0434. According to this study, the mean stem form of Pinus brutia trees is (0.64), which signifies quadratic paraboloid.","PeriodicalId":21627,"journal":{"name":"Science Journal of University of Zakho","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87836837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bayesian Deep Learning Applied to LSTM Models for Predicting COVID-19 Confirmed Cases in Iraq","authors":"","doi":"10.25271/sjuoz.2023.11.2.1037","DOIUrl":"https://doi.org/10.25271/sjuoz.2023.11.2.1037","url":null,"abstract":"The COVID-19 pandemic has had a huge impact on populations around the world and has caused critical problems to medical systems. With the increasing number of COVID-19 infections, research has focused on forecasting the confirmed cases to make the right medical decisions. Despite the huge number of studies conducted to forecast the COVID-19 patients, the use of Deep Learning (DL) and Bayesian DL models are limited in this field in Iraq. Therefore, this research aims to predict the confirmed cases of COVID-19 in Iraq using classical DL models such as, Long-Short-Term-Memory (LSTM) and Bayesian LSTM models. In this study, Bayesian Deep Learning (BDL) using LSTM models was used to predict COVID-19 confirmed cases in Iraq. The motivation behind using BDL models is that they are capable to quantify model uncertainty and provide better results without overfitting or underfitting. A Monte Carlo (MC) Dropout, which is an approximation method, is added to the Bayesian-LSTM to create numerous predictions for each instance and evaluate epistemic uncertainty. To evaluate the performance of our proposed models, four evaluation measures (MSE, RMSE, R2, MAE) were used. Experimental results showed that the proposed models were efficient and provided an R2 of 0.93 and 0.92, for vanilla LSTM and Bayesian-LSTM, respectively. Furthermore, the two proposed models were optimized using ADAM and SGD optimizers, with the results revealing that optimizing with ADAM provided more accurate results. Thus, we believe that these models may assist the government in making critical decisions based on short-term predictions of confirmed cases in Iraq.","PeriodicalId":21627,"journal":{"name":"Science Journal of University of Zakho","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90399057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"SYNTHESIS AND CHARACTERIZATION OF SOME NEW NITRONES DERIVATIVES AND SCREENING THEIR BIOLOGICAL ACTIVITIES","authors":"Jihad Haji Mohammed, Nabaz Abdulmajeed Mohammad Salih","doi":"10.25271/sjuoz.2023.11.2.1149","DOIUrl":"https://doi.org/10.25271/sjuoz.2023.11.2.1149","url":null,"abstract":"Synthetic approached towards the synthesis of some novel nitrones derivatives have been started with reduction of nitrobenzene derivatives as starting material bearing electron withdrawing and electron donating groups to corresponding phenylhydroxylamine in presence of zinc dust as reducing agent in aqueous solution of ammonium chloride (NH4Cl). The prepared phenylhydroxylamine derivatives were reacted with different substituted benzaldehydes to give the target derivatives of nitrone. The structures of the synthesized nitrones were characterized by spectroscopic methods FT-IR, 1H-NMR and 13C NMR. Finally, the newly synthesized compounds were screened for their microorganism activities at different concentration, and inhibited growth of Escherichia coli (E. coli) Gram negative, Staphylococcus aureus (S. aureus) Gram positive, and fungi (candida albicans).","PeriodicalId":21627,"journal":{"name":"Science Journal of University of Zakho","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80832636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}