Pub Date : 2020-06-30DOI: 10.32894/kujss.2019.15.2.4
{"title":"Study of Spectroscopic and Vibrational Properties of the Phthalocyanine Molecule (C_32 H_18 N_8) and Magnesium Phthalocyanine (C_32 H_16 MgN_8) by Using Quantum Programs","authors":"","doi":"10.32894/kujss.2019.15.2.4","DOIUrl":"https://doi.org/10.32894/kujss.2019.15.2.4","url":null,"abstract":"","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43877296","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}
Pub Date : 2020-06-01DOI: 10.32894/kujss.2020.15.2.1
Aveen K. Mohammed, A. Khaleel, Nawzad N. Ahmed
In this research, new coated carbon electrodes were constructed and used for the determination of Sildenafil citrate (SILC) drug. The electrodes were constructed by preparing ion-pair for (SILC) with phosphotungstic acid (PTA) or phosphomolybdic (PMA) acid using dibutyl phthalate (DBP) as a plasticizer. These electrodes showed good sensitivity towards SILC with linear range of (1.010 -7 -1.010 -2 ) M, correlation coefficient, (0.9990), the life time (120) days, optimum temperature range (23-65) o C and optimum pH range (2-5) for both electrodes, limit of detection (5.05510 -8 and 5.11610 -8 ) M, slope (57.29 and 59.10) mV/decadefor SILC-PTA and SILC-PMA electrodes respectively. These electrodes were successfully applied for determination of SILC in pure and pharmaceutical preparation form(tablets) with recovery of not less than 98%.
{"title":"Construction of New Coated Carbon Electrodes for Determination of Sildenafil Citrate Drug","authors":"Aveen K. Mohammed, A. Khaleel, Nawzad N. Ahmed","doi":"10.32894/kujss.2020.15.2.1","DOIUrl":"https://doi.org/10.32894/kujss.2020.15.2.1","url":null,"abstract":"In this research, new coated carbon electrodes were constructed and used for the determination of Sildenafil citrate (SILC) drug. The electrodes were constructed by preparing ion-pair for (SILC) with phosphotungstic acid (PTA) or phosphomolybdic (PMA) acid using dibutyl phthalate (DBP) as a plasticizer. These electrodes showed good sensitivity towards SILC with linear range of (1.010 -7 -1.010 -2 ) M, correlation coefficient, (0.9990), the life time (120) days, optimum temperature range (23-65) o C and optimum pH range (2-5) for both electrodes, limit of detection (5.05510 -8 and 5.11610 -8 ) M, slope (57.29 and 59.10) mV/decadefor SILC-PTA and SILC-PMA electrodes respectively. These electrodes were successfully applied for determination of SILC in pure and pharmaceutical preparation form(tablets) with recovery of not less than 98%.","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43598615","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}
Pub Date : 2020-06-01DOI: 10.32894/kujss.2020.15.2.5
Jawdet Hidayat Mohammed
This Study aims to calculate the drought index by application the de Martine equation and determine the type of climate for rainy months in the three selected stations in Iraq (Mosul, Baghdad and Nasiriya) by use data of (Rainfall and Temperature) for the period ranged (1970 to 2010), which was recorded from the "Iraqi Meteorological Organization and seismology" in Baghdad. The results appears that the climate is humid in the months (December and January), the climate is variable between (wet and semiarid) in the months (February, March, April and November), while the climate is variable between (semiarid and arid) in the months (May and October) as a result of variation the values of (Rainfall and Temperature) for rainy months in the three studying stations. In this research the relationship between values of drought index and the rainfall amount and temperatures has been showing by calculation the correlation coefficient and also obtained simple linear regression by applying program of Microsoft excel (2010), the results indicated the existence of strong linear correlation between the drought index and rainfall in Kirkuk University Journal /Scientific Studies (KUJSS) Volume 15, Issue 2, June 2020 , pp. (63-78) ISSN: 1992-0849 (Print), 2616-6801 (Online) Web Site: www.uokirkuk.edu.iq/kujss E-mail: kujss@uokirkuk.edu.iq, kujss.journal@gmail.com 65 the three studying stations values between (0.96) – (0.98), while the results showed the occurring of strong inverse correlation between the drought index and temperatures in the three studying stations values between (-0.93) – (-0.98) in the three stations.
{"title":"Calculation the Drought Index and Determination the Type of Climate for the Rainy Months in the Selected Stations in Iraq","authors":"Jawdet Hidayat Mohammed","doi":"10.32894/kujss.2020.15.2.5","DOIUrl":"https://doi.org/10.32894/kujss.2020.15.2.5","url":null,"abstract":"This Study aims to calculate the drought index by application the de Martine equation and determine the type of climate for rainy months in the three selected stations in Iraq (Mosul, Baghdad and Nasiriya) by use data of (Rainfall and Temperature) for the period ranged (1970 to 2010), which was recorded from the \"Iraqi Meteorological Organization and seismology\" in Baghdad. The results appears that the climate is humid in the months (December and January), the climate is variable between (wet and semiarid) in the months (February, March, April and November), while the climate is variable between (semiarid and arid) in the months (May and October) as a result of variation the values of (Rainfall and Temperature) for rainy months in the three studying stations. In this research the relationship between values of drought index and the rainfall amount and temperatures has been showing by calculation the correlation coefficient and also obtained simple linear regression by applying program of Microsoft excel (2010), the results indicated the existence of strong linear correlation between the drought index and rainfall in Kirkuk University Journal /Scientific Studies (KUJSS) Volume 15, Issue 2, June 2020 , pp. (63-78) ISSN: 1992-0849 (Print), 2616-6801 (Online) Web Site: www.uokirkuk.edu.iq/kujss E-mail: kujss@uokirkuk.edu.iq, kujss.journal@gmail.com 65 the three studying stations values between (0.96) – (0.98), while the results showed the occurring of strong inverse correlation between the drought index and temperatures in the three studying stations values between (-0.93) – (-0.98) in the three stations.","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45820567","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}
Pub Date : 2020-06-01DOI: 10.32894/kujss.2020.15.2.2
S. Kadhim, Shaimaa Abdul-Hussein Kadhim
The main purpose of this paper, is study the ideas of orderConvergence of filters in a Riesz spaces and that is through prove an important theorems related to the some properties Riesz spaces. So we established that the intersection and union all subsets of the collection of all proper filters F(M) were converge to point in Riesz space it's the same convergence point the filter there exist in these subsets and proved that order-convergence for intersection (union) two filters to intersection (union) two different points in Riesz space is equivalent to the set consist of two convergence points we could write it by using these filters .
{"title":"On Order - Convergence of Filters in a Riesz Spaces","authors":"S. Kadhim, Shaimaa Abdul-Hussein Kadhim","doi":"10.32894/kujss.2020.15.2.2","DOIUrl":"https://doi.org/10.32894/kujss.2020.15.2.2","url":null,"abstract":"The main purpose of this paper, is study the ideas of orderConvergence of filters in a Riesz spaces and that is through prove an important theorems related to the some properties Riesz spaces. So we established that the intersection and union all subsets of the collection of all proper filters F(M) were converge to point in Riesz space it's the same convergence point the filter there exist in these subsets and proved that order-convergence for intersection (union) two filters to intersection (union) two different points in Riesz space is equivalent to the set consist of two convergence points we could write it by using these filters .","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45821423","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}
Pub Date : 2020-06-01DOI: 10.32894/kujss.2020.15.2.6
Marwa M. Mudeed, Ashraf J. Mahmoud, Yassin H. Owaid
The study was conducted in the laboratories of College of Education for women/University of Tikrit and Environmental Laboratory in Science College/University of Kirkuk, for the period from July 2018 until end of December 2018, during which 773 fish were collected, including 358 fish from fishes of education ponds (Cyprinus carpio and Barbus lutens) and 415 from Lower Zab River fish (Barbus sharpeyi, Barbus xanthopterus, Silurus glanis). The results recorded the infection of fish with three types of external primary parasites: Trichodina elegini in B. xanthopterus and breeding pond fish (C. carpio and donkeys), Chilodonella cyprinid by 7.9% in C. carpio fish from ponds and B. xanthopterus fish by 7.5% and 5.4% in B. sharpeyi fish, and there was no infection in S. glanis and B. lutens fish , Einaria sinensis, 14.8% in S. glanis fish, 9.589% in C. carpio fish from ponds, 8.17% in B. xanthopterus and 6.081% in B. sharpeyi fish. Kirkuk University Journal /Scientific Studies (KUJSS) Volume 15, Issue 2, June 2020 , pp. (79-96) ISSN: 1992-0849 (Print), 2616-6801 (Online) Web Site: www.uokirkuk.edu.iq/kujss E-mail: kujss@uokirkuk.edu.iq, kujss.journal@gmail.com 81 Changes were recorded in some of physical and chemical properties of water samples, as fluctuations in the average temperature of water were recorded between 26.7-11.5 ° C in river stations and 28-19 ° C in ponds stations, and the discretion values showed site rates ranging from 28.9-21.6 NTU to water in river stations and 24. 6-20 NTU in ponds stations, a rate of electrical conductivity was recorded565-369micemens /cm for water in river stations and 690408 micrometers / cm in ponds stations, pH values ranged between 8.3-7.2 in river sites and 8.4-7 in ponds, and scored Variations in oxygen biomarker values between 4.4-0.6 mg / l in river stations and 5.2-1.9 in ponds .
该研究于2018年7月至2018年12月底在提克里特妇女教育学院/大学实验室和基尔库克大学科学学院环境实验室进行，在此期间收集了773条鱼，其中包括358条来自教育池塘的鱼(鲤鱼和Barbus lutens)和415条来自下扎布河的鱼(Barbus sharpeyi, Barbus xanthopterus, Silurus glanis)。结果记录了鱼的感染与三种类型的外部主要寄生虫:Trichodina elegini b . xanthopterus和养殖池塘的鱼(c . carpio和驴),斜管虫属鲤科的7.9%从池塘和b . c . carpio鱼xanthopterus鱼7.5%和5.4%在b . sharpeyi鱼,也没有感染glanis和b lutens鱼,Einaria sinensis, 14.8% s . glanis鱼,9.589% c carpio鱼池塘、8.17% b xanthopterus 6.081%, b . sharpeyi鱼。基尔库克大学学报/科学研究(KUJSS)卷15，第2期，2020年6月，pp. (79-96) ISSN: 1992-0849(印刷)，2616-6801(在线)网站:www.uokirkuk.edu.iq/kujss电子邮件:kujss@uokirkuk.edu.iq, kujss.journal@gmail.com 81记录了水样的一些物理和化学性质的变化，因为河流站的平均水温在26.7-11.5°C之间波动，池塘站的平均水温在28-19°C之间波动，并且自由值显示站点率在28.9-21.6 NTU之间。水体电导率为565-369micemens /cm，水体电导率为690408微米/cm，水体pH值为8.3-7.2，水体pH值为8.4-7，水体pH值为4.4-0.6 mg / l，水体pH值为5.2-1.9。
{"title":"Environmental and Diagnostic Study of External Parasites of Some Fish of Lower Zab River and Development Ponds Fishes in Kirkuk Governorate","authors":"Marwa M. Mudeed, Ashraf J. Mahmoud, Yassin H. Owaid","doi":"10.32894/kujss.2020.15.2.6","DOIUrl":"https://doi.org/10.32894/kujss.2020.15.2.6","url":null,"abstract":"The study was conducted in the laboratories of College of Education for women/University of Tikrit and Environmental Laboratory in Science College/University of Kirkuk, for the period from July 2018 until end of December 2018, during which 773 fish were collected, including 358 fish from fishes of education ponds (Cyprinus carpio and Barbus lutens) and 415 from Lower Zab River fish (Barbus sharpeyi, Barbus xanthopterus, Silurus glanis). The results recorded the infection of fish with three types of external primary parasites: Trichodina elegini in B. xanthopterus and breeding pond fish (C. carpio and donkeys), Chilodonella cyprinid by 7.9% in C. carpio fish from ponds and B. xanthopterus fish by 7.5% and 5.4% in B. sharpeyi fish, and there was no infection in S. glanis and B. lutens fish , Einaria sinensis, 14.8% in S. glanis fish, 9.589% in C. carpio fish from ponds, 8.17% in B. xanthopterus and 6.081% in B. sharpeyi fish. Kirkuk University Journal /Scientific Studies (KUJSS) Volume 15, Issue 2, June 2020 , pp. (79-96) ISSN: 1992-0849 (Print), 2616-6801 (Online) Web Site: www.uokirkuk.edu.iq/kujss E-mail: kujss@uokirkuk.edu.iq, kujss.journal@gmail.com 81 Changes were recorded in some of physical and chemical properties of water samples, as fluctuations in the average temperature of water were recorded between 26.7-11.5 ° C in river stations and 28-19 ° C in ponds stations, and the discretion values showed site rates ranging from 28.9-21.6 NTU to water in river stations and 24. 6-20 NTU in ponds stations, a rate of electrical conductivity was recorded565-369micemens /cm for water in river stations and 690408 micrometers / cm in ponds stations, pH values ranged between 8.3-7.2 in river sites and 8.4-7 in ponds, and scored Variations in oxygen biomarker values between 4.4-0.6 mg / l in river stations and 5.2-1.9 in ponds .","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44191761","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}
Pub Date : 2020-06-01DOI: 10.32894/kujss.2020.15.2.3
Muthana Yaseen Nawaf, M. M. Rashid
This article focuses on the quality of data mining algorithms in terms of the accuracy ratio and time consumption. So, in order to figure out the best algorithm among the classification and clustering algorithms, the WEKA program will be testing all algorithms using a real dataset from the size effect on defect proneness for open source software. The Mozilla product is adopted as an example of open source software. The dataset that is used in this paper represents the output of the study of the size effect on defect proneness in the open source software. The study of Mozilla product shows a significant relationship between the size of software and the number of defect proneness in software. The Mozilla product study produced a dataset to be as inputs of the WEKA program in order to compare the data mining tools (algorithms). We use the Naive Bayes, Decision Trees J48, Expectation-maximization for classifying and K-Star and Simple KMeans for clustering methods. The findings demonstrate the difference between the algorithms according to the accuracy, and the time consuming to reach the result in each algorithm. Furthermore, the effect of the software size is significant on defect proneness. Finally, the experiments are conducted in WEKA with the aim of this research is finding out the best algorithm in terms of accuracy and timeconsuming. At the end, the paper will be figuring out the best algorithm in order to choose and depending on it in the tests of classification and clustering.
{"title":"Study of Data Mining Algorithms Using a Dataset from the Size-Effect on Open Source Software Defects","authors":"Muthana Yaseen Nawaf, M. M. Rashid","doi":"10.32894/kujss.2020.15.2.3","DOIUrl":"https://doi.org/10.32894/kujss.2020.15.2.3","url":null,"abstract":"This article focuses on the quality of data mining algorithms in terms of the accuracy ratio and time consumption. So, in order to figure out the best algorithm among the classification and clustering algorithms, the WEKA program will be testing all algorithms using a real dataset from the size effect on defect proneness for open source software. The Mozilla product is adopted as an example of open source software. The dataset that is used in this paper represents the output of the study of the size effect on defect proneness in the open source software. The study of Mozilla product shows a significant relationship between the size of software and the number of defect proneness in software. The Mozilla product study produced a dataset to be as inputs of the WEKA program in order to compare the data mining tools (algorithms). We use the Naive Bayes, Decision Trees J48, Expectation-maximization for classifying and K-Star and Simple KMeans for clustering methods. The findings demonstrate the difference between the algorithms according to the accuracy, and the time consuming to reach the result in each algorithm. Furthermore, the effect of the software size is significant on defect proneness. Finally, the experiments are conducted in WEKA with the aim of this research is finding out the best algorithm in terms of accuracy and timeconsuming. At the end, the paper will be figuring out the best algorithm in order to choose and depending on it in the tests of classification and clustering.","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41619902","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}
Pub Date : 2019-12-28DOI: 10.32894/kujss.2019.14.4.9
E. Shaker, B. Othman
The research included the study of some Geotechnical properties of selected Locations from the Sikanian region, which is Miocene – Pliocene and quaternary deposits. The study area located in the northeastern part of kirkuk governorate. The samples were collected from four sites. Moisture content, dry density, porosity, sciemic wave velocity, and uniaxial compressive strength tests were conducted of the rock samples in the laboratory. The results of petrophysical tests showed that the Dry Density ranged between (1.38-2.58) gm.cm -3 and Porosity between (13.2224.5)%. The uniaxail compresive strength results ranged between (6.71-52.45) Mpa The seismic velocity of the sandstone was higher than the seismic velocity of the claystone and showed a good positive correlation between Dynamic and Mechanic properties, This relation can be used to find and extract Uniaxial compressive strength values for sandstone and claystone of Sikanian region in the case of absence of standard sample.
{"title":"Evaluation of Engineering Properties of Rocks from Selected Location from Sikanian Region-Kirkuk / NE Iraq","authors":"E. Shaker, B. Othman","doi":"10.32894/kujss.2019.14.4.9","DOIUrl":"https://doi.org/10.32894/kujss.2019.14.4.9","url":null,"abstract":"The research included the study of some Geotechnical properties of selected Locations from the Sikanian region, which is Miocene – Pliocene and quaternary deposits. The study area located in the northeastern part of kirkuk governorate. The samples were collected from four sites. Moisture content, dry density, porosity, sciemic wave velocity, and uniaxial compressive strength tests were conducted of the rock samples in the laboratory. The results of petrophysical tests showed that the Dry Density ranged between (1.38-2.58) gm.cm -3 and Porosity between (13.2224.5)%. The uniaxail compresive strength results ranged between (6.71-52.45) Mpa The seismic velocity of the sandstone was higher than the seismic velocity of the claystone and showed a good positive correlation between Dynamic and Mechanic properties, This relation can be used to find and extract Uniaxial compressive strength values for sandstone and claystone of Sikanian region in the case of absence of standard sample.","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45627988","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}
Pub Date : 2019-12-28DOI: 10.32894/kujss.2019.14.4.7
Kadhim M. Abed
Nanoparticles of zinc oxide are prepared by three different chemical methods. The first one includes mixing of zinc nitrate (hexa – H 2 O) with solution of sodium hydroxide (0.4N) at a ratio of (2:1) (sampleN1). In the second method, ammonium bicarbonate solution mixed with zinc sulfate (0.2M) at a ratio of (1:2) (sampleN2). The third method includes mixing of zinc nitrate (hexa – H 2 O) with sodium hydroxide (0.6N) at a ratio of (2:1) (sampleN3), were solution of starch added as fixing agent for nanoparticles. The nanoparticles examined by X– ray diffraction technique. in addition to transmission electronic microscope to determine the volume of nanoparticles. Composites are prepared by mixing nanoparticles of zinc oxide with epoxy resin. Mechanical properties measurement showed that the hardness value of the sample (EP+N3) was (103.38) due to Shore is better than the values of the other prepared samples (EP, EP+N2, EP+N1). Also, the composite (EP+N3) showed good compressive strength which was (163.71 MPa). The value of thermal conductivity of the mentioned composite was (6.41W m -1 0 K -1 ) which indicates good thermal properties. However, the study showed that the Epoxy resin has a good response to form important composites with zinc oxide nanoparticles.
采用三种不同的化学方法制备氧化锌纳米颗粒。第一种方法是将硝酸锌(hexa - h2o)与氢氧化钠(0.4N)溶液以2:1的比例混合(试样)。在第二种方法中，碳酸氢铵溶液与硫酸锌(0.2M)按(1:2)的比例混合(sampleN2)。第三种方法是将硝酸锌(hexa - h2o)与氢氧化钠(0.6N)按(2:1)的比例混合(样品3)，加入淀粉溶液作为纳米颗粒的固化剂。用X射线衍射技术对纳米颗粒进行了检测。另外用透射电镜来测定纳米颗粒的体积。将氧化锌纳米颗粒与环氧树脂混合制备复合材料。力学性能测试表明，EP+N3的邵氏硬度值为103.38，优于其他制备的EP、EP+N2、EP+N1样品。EP+N3复合材料的抗压强度为163.71 MPa。该复合材料的导热系数为(6.41W m -1 0 K -1)，具有良好的热性能。然而，研究表明，环氧树脂与氧化锌纳米颗粒形成重要的复合材料具有良好的反应性。
{"title":"Preparation and Study the Effect of Nano Zinc Oxide Particles Upon Some Mechanical and Thermal Properties of Epoxy Resin","authors":"Kadhim M. Abed","doi":"10.32894/kujss.2019.14.4.7","DOIUrl":"https://doi.org/10.32894/kujss.2019.14.4.7","url":null,"abstract":"Nanoparticles of zinc oxide are prepared by three different chemical methods. The first one includes mixing of zinc nitrate (hexa – H 2 O) with solution of sodium hydroxide (0.4N) at a ratio of (2:1) (sampleN1). In the second method, ammonium bicarbonate solution mixed with zinc sulfate (0.2M) at a ratio of (1:2) (sampleN2). The third method includes mixing of zinc nitrate (hexa – H 2 O) with sodium hydroxide (0.6N) at a ratio of (2:1) (sampleN3), were solution of starch added as fixing agent for nanoparticles. The nanoparticles examined by X– ray diffraction technique. in addition to transmission electronic microscope to determine the volume of nanoparticles. Composites are prepared by mixing nanoparticles of zinc oxide with epoxy resin. Mechanical properties measurement showed that the hardness value of the sample (EP+N3) was (103.38) due to Shore is better than the values of the other prepared samples (EP, EP+N2, EP+N1). Also, the composite (EP+N3) showed good compressive strength which was (163.71 MPa). The value of thermal conductivity of the mentioned composite was (6.41W m -1 0 K -1 ) which indicates good thermal properties. However, the study showed that the Epoxy resin has a good response to form important composites with zinc oxide nanoparticles.","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46238090","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}
Pub Date : 2019-12-28DOI: 10.32894/kujss.2019.14.4.12
A. Mohammad, Thaer Hallo, F. Al-Juboory
In this paper, the preparation of nickel catalyst supported on gamma alumina with high surface area was done; nickel sulphate was used as a source of nickel. Impregnation method was used in the preparation with two-stage, as it is known cannot use this method to prepare catalysts with a high content of metal Despite the ease and simplicity of it, so the solution is fragmented into two parts and download each part separately. Nickel content was measured in solution by atomic absorption device as well as the comparison was made between the prepared catalyst and commercial catalyst by scanning electron microscopy (SEM) and X-ray deflection (XRD).
{"title":"Preparation of A Catalyst Used in Hydrogenation Processes","authors":"A. Mohammad, Thaer Hallo, F. Al-Juboory","doi":"10.32894/kujss.2019.14.4.12","DOIUrl":"https://doi.org/10.32894/kujss.2019.14.4.12","url":null,"abstract":"In this paper, the preparation of nickel catalyst supported on gamma alumina with high surface area was done; nickel sulphate was used as a source of nickel. Impregnation method was used in the preparation with two-stage, as it is known cannot use this method to prepare catalysts with a high content of metal Despite the ease and simplicity of it, so the solution is fragmented into two parts and download each part separately. Nickel content was measured in solution by atomic absorption device as well as the comparison was made between the prepared catalyst and commercial catalyst by scanning electron microscopy (SEM) and X-ray deflection (XRD).","PeriodicalId":34247,"journal":{"name":"mjl@ jm`@ krkwk ldrst l`lmy@","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45103637","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}
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