The University of Zakho was announced as an independent university on July 2010. Before this date, there were two colleges, Education and Commerce, which were affiliated to the University of Duhok. University of Zakho along with another three new universities were founded following the resolution made by the Parliament of Kurdistan Regional to address the increased demand for higher education studies in the region.Once the university was nominated, the colleges of Education and Commerce were reorganized into two faculties: Science and Humanities. Wikipedia.
Hussein N.R.,Duhok University |
Tunjel I.,Fatih University |
Majed H.S.,Nutrition Unit |
Yousif S.T.,Duhok University |
And 2 more authors.
New Microbes and New Infections | Year: 2015
Helicobacter pylori causes peptic ulceration and gastric adenocarcinoma. The aims were to study the influence of dupA1 positivity upon interleukin-8 (IL-8) secretion from gastric mucosa and determine the prevalence of mutations responsible for clarithromycin and fluoroquinolone resistance. DNA was extracted from 74 biopsies and the virulence factors were studied. Levels of IL-8 in gastric mucosa were measured using ELISA and the mutations responsible for clarithromycin and fluoroquinolone resistance were determined using a GenoType-HelicoDR assay. The prevalence of cagA in strains isolated from gastric ulcer (GU) and duodenal ulcer (DU) was significantly higher than those isolated from non-ulcer disease (NUD) (90% and 57.9% versus 33.3%; p 0.01). The vacA s1m1 genotype was more prevalent in patients with DU (73.7%) and GU (70%) than in those with NUD (13.3%) (p 0.01). The prevalence of dupA1 was higher in DU patients (36.8%) than those with GU (10%) and NUD (8.9%) (p 0.01). Multivariate analysis showed that a cagA+/. vacA s1i1m2 virulence gene combination was independently associated with the developing peptic ulcer disease (PUD) with increased odds of developing PUD (p 0.03; OR=2.1). We found no significant difference in the levels of IL-8 secretion in gastric mucosa infected with H.pylori dupA-negative and H.pylori dupA1-positive strains (. dupA-negative: mean±median: 28±26 versus 30±27.1 for dupA1; p 0.6). While 12 strains were clarithromycin resistant, only three isolates were levofloxacin resistant. A significant association was found between dupA1 genotype and A2147G clarithromycin resistance mutation (p <0.01). Further study is needed to explore the relationship between virulence factors and disease process and treatment failure. © 2015 .
Eesa A.S.,University of Zakho |
Orman Z.,Istanbul University |
Brifcani A.M.A.,Duhok University
Expert Systems with Applications | Year: 2015
This paper presents a new feature-selection approach based on the cuttlefish optimization algorithm which is used for intrusion detection systems (IDSs). Because IDSs deal with a large amount of data, one of the crucial tasks of IDSs is to keep the best quality of features that represent the whole data and remove the redundant and irrelevant features. The proposed model uses the cuttlefish algorithm (CFA) as a search strategy to ascertain the optimal subset of features and the decision tree (DT) classifier as a judgement on the selected features that are produced by the CFA. The KDD Cup 99 dataset is used to evaluate the proposed model. The results show that the feature subset obtained by using CFA gives a higher detection rate and accuracy rate with a lower false alarm rate, when compared with the obtained results using all features. © 2014 Elsevier Ltd.
Azzopardi B.J.,University of Nottingham |
Pioli L.,University of Geneva |
Abdulkareem L.A.,University of Zakho
International Journal of Multiphase Flow | Year: 2014
Very viscous liquids (>100 Pa s) are found in form of heavy oils and polymers in industry as well as in the natural environment (silicatic magma). Little is known of their behaviour as gas bubbles up through them in vertical columns. Using advanced tomographic instrumentation, the characteristics of these flows have been quantified. It was found that: the gas mainly travels as very large bubbles which occupy a significant part of the column cross-section and that very small bubbles (~100. μm) are created and trapped within the liquid. There is a periodic rising and falling of the top surface of the gas/liquid column as the large bubbles rise to the top and burst. © 2014 Elsevier Ltd.
Mustafa Y.T.,University of Zakho |
Habeeb H.N.,Directorate of Forestry
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2014
Monitoring and analyzing forests and trees are required task to manage and establish a good plan for the forest sustainability. To achieve such a task, information and data collection of the trees are requested. The fastest way and relatively low cost technique is by using satellite remote sensing. In this study, we proposed an approach to identify and map 15 tree species in the Mangish sub-district, Kurdistan Region-Iraq. Image-objects (IOs) were used as the tree species mapping unit. This is achieved using the shadow index, normalized difference vegetation index and texture measurements. Four classification methods (Maximum Likelihood, Mahalanobis Distance, Neural Network, and Spectral Angel Mapper) were used to classify IOs using selected IO features derived from WorldView-2 imagery. Results showed that overall accuracy was increased 5-8% using the Neural Network method compared with other methods with a Kappa coefficient of 69%. This technique gives reasonable results of various tree species classifications by means of applying the Neural Network method with IOs techniques on WorldView-2 imagery. © 2014 SPIE.
Mustafa Y.T.,University of Zakho |
Tolpekin V.A.,University of Twente |
Stein A.,University of Twente
IEEE Transactions on Geoscience and Remote Sensing | Year: 2014
Canopy leaf area index (LAI) is a quantitative measure of canopy foliar area. LAI values can be derived from Moderate Resolution Imaging Spectroradiometer (MODIS) images. In this paper, MODIS pixels from a heterogeneous forest located in The Netherlands were decomposed using the linear mixture model using class fractions derived from a high-resolution aerial image. Gaussian Bayesian networks (GBNs) were applied to improve the spatio-temporal estimation of LAI by combining the decomposed MODIS images with a spatial version of physiological principles predicting growth (3PG) model output at different moments in time. Results showed that the spatial-temporal output obtained with the GBN was 40% more accurate than the spatial 3PG, with a root-mean-square error below 0.25. We concluded that the GBNs improved the spatial estimation of LAI values of a heterogeneous forest by combining a spatial forest growth model with satellite imagery. © 1980-2012 IEEE.
Al-Dabagh N.B.I.,University of Mosul |
Ali I.A.,University of Zakho
Proceedings of the 2011 International Conference on High Performance Computing and Simulation, HPCS 2011 | Year: 2011
The network based denial of service attacks (DoS) are still the big challenge to the researchers in the field of network security. This paper handles the popular DoS attack called TCP-SYN flood attack, and presents the design and implementation of an Artificial Immune system for Syn flood Detection, abbreviated by AISD, based on the Dendritic Cell Algorithm (DCA). The AISD system is able to detect the generated SYN flood attack and response to its generator in a real-time. Performance and accuracy of the system have been evaluated through five experiments. Results of the experiments showed the precision of intrusion detection process to the ratio of 100%, with a notable response speed, and this is shows the benefit and suitability of using artificial immune systems to the network security problems. © 2011 IEEE.
Ibrahim H.Z.,University of Zakho
Acta Scientiarum - Technology | Year: 2013
In this paper, a new kind of set called an αγ-open set is introduced and investigated using the γ-operator due to Ogata. Such sets are used for studying new types of mappings, viz. αγ-continuous, α(γ,β)-irresolute, etc. Finally, new separation axioms: αγ-Ti (i = 0, 1/2, 1, 2), αγ-Di (i = 0, 1, 2), and a new notion of the graph of a function called an αγ-closed graph.
Yousif K.M.,University of Zakho
World Renewable Energy Forum, WREF 2012, Including World Renewable Energy Congress XII and Colorado Renewable Energy Society (CRES) Annual Conferen | Year: 2012
It would be advantageous to reduce the energy consumption of buildings to a more environmentally friendly level and to a more energy cost efficient level by using Solar Control Window Films (SCWF). These films help to keep the summer heat out and help to lock the heat inside in winter. The summer period in Iraq is long and very hot (the temperature = 43-48 oC). This is due to a lot of solar radiation (e.g. in Duhok /Northern Iraq, it is ranging from about 2.44 to 8.10 kWh/day.m2) This paper will discuss the advantages of using SCWF to reduce the energy consumption of buildings in Iraq. Solar gain has been measured in two rooms (in a building with and without SCWF. Solar heat gain Coefficient, the net annual cost savings due to sticking SCWF on the window, and simple payback period have been calculated. Copyright © (2012) by American Solar Energy Society.
Naman S.,University of Zakho
20th World Hydrogen Energy Conference, WHEC 2014 | Year: 2014
Hydrogen fuel has been produced from different raw materials using various methods, the environmental and economic principles were considered beside efficiency of processes. Hydrogen sulfide (H2S) is a polluted gas, smelly, corrosive, and highly toxic and is commonly found in the Petroleum nature gas and Black sea in a concentration range between ( 10 ppm to 10% ) in the world . It has long been recognized that H2S can be decomposed, yielding hydrogen and sulfur (S) as primary products, we had used several methods for splitting technique (thermo catalytic, photo-thermo catalytic, using semiconductors ...) in gas and liquid phase in order to decrease the decomposition temperature and increase the hydrogen production efficiently. We have produced hydrogen from this gas at low concentrations 10 ppm (Black see at depth of 1000m) using three pilot plants for extraction and decomposition. Our home research groups had produced hydrogen from this gas at high concentration above 10% (Iraqi natural gas) using another suitable pilot plants which it can be used to substitute Claus process plant in Iraq, with existing refinery and natural-gas-processing and a way the reaction of H2S with methane are available the final products of these processes are Hydrogen and Carbon disulfide. Kirkuk-Iraq pilot-plant provides an excellent opportunity to produce hydrogen gas in a large scale system (140 ton/day), from modification of Claus plant. The cost of hydrogen produced depends on the price of the coproduced CS2 and can conceivably be zero dollars, i.e. free. This project will also provide a platform for domestic and international companies and organizations to jointly participate in all efforts of re-building Kurdistan Region Iraq and creating clean world and with all its systems could be used as science centre for technical and scientific education. And will present a technical, economic and environmental analysis of hydrogen production from hydrogen sulfide (H2S). © (2014) by the Committee of WHEC2014.
Tasyriq M.,University of Malaya |
Najmuldeen I.A.,University of Zakho |
In L.L.A.,University of Malaya |
Mohamad K.,University of Malaya |
And 2 more authors.
Evidence-based Complementary and Alternative Medicine | Year: 2012
In continuation of our interest towards the elucidation of apoptotic pathways of cytotoxic phytocompounds, we have embarked upon a study on the anticancer effects of 7α-hydroxy-β-sitosterol (CT1), a rare natural phytosterol oxide isolated from Chisocheton tomentosus. CT1 was found to be cytotoxic on three different human tumor cell lines with minimal effects on normal cell controls, where cell viability levels were maintained ≥80 upon treatment. Our results showed that cell death in MCF-7 breast tumor cells was achieved through the induction of apoptosis via downregulation of the ERK1/2 signaling pathway. CT1 was also found to increase proapoptotic Bax protein levels, while decreasing anti-apoptotic Bcl-2 protein levels, suggesting the involvement of the intrinsic pathway. Reduced levels of initiator procaspase-9 and executioner procaspase-3 were also observed following CT1 exposure, confirming the involvement of cytochrome c-mediated apoptosis via the mitochondrial pathway. These results demonstrated the cytotoxic and apoptotic ability of 7α-hydroxy-β-sitosterol and suggest its potential anti-cancer use particularly on breast adenocarcinoma cells. © 2012 Mohammad Tasyriq et al.