mjl@ ltrby@ wl`lm最新文献

{"title":"Preparation and study of some physical properties of silver nanoparticles by pulsed laser ablation in liquids technique","authors":"M. Al-Jubbori, Noor Al-Jubbori","doi":"10.33899/edusj.2022.132843.1212","DOIUrl":"https://doi.org/10.33899/edusj.2022.132843.1212","url":null,"abstract":"In this paper, the pulsed ablation laser in liquids (PLAL)method was used to obtain copper nanoparticles from material copper, one of the first signs of nanoparticle production or generation using the pulsed laser is a change in the color of the sample's solution as the concentration of nanoparticles increases. In our study, deionized distilled water with a volume of 5 mL was used to prepare the samples with energy (300, 500) mj. With number of pulsed (50, 100, 150, 200) pulse respectively. We noticed a change in the color of the solution to a dark white color, indicating the presence of silver nanoparticles. In another side study the obsorbancy and transmission by using UV-Visible spectroscopy, the peaks of all samples were at wave length at (250-260) nm. This confirms that nanoparticles have been obtained from silver material. The determined mean energy gab for direct transition allowed of the samples is 2.74 eV.","PeriodicalId":33491,"journal":{"name":"mjl@ ltrby@ wl`lm","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48652071","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":"Comparison of the Inhibitory Antibacterial Activity of Dry Body Extract of Periplaneta americana and Polistes watti","authors":"A. Hameed, A. Mekhlif","doi":"10.33899/edusj.2022.133550.1233","DOIUrl":"https://doi.org/10.33899/edusj.2022.133550.1233","url":null,"abstract":"Insects have been considered the main source of very useful chemical compounds. Today, the insect ' s innate immunity is a subject of antibiotic alternatives by experimenting with their body extracts. After application of the \"Sequential solvent polarity\" method. The dry body extract of the Americana cockroach, Periplaneta americana was exhibited had variable growth inhibition between the tasted pathogenic bacteria, the methanol cold extract was more effective than with other (Hexane, Diethyl ether, Ethyl acetate, Methanol) solvents by inhibition zone diameters; (29.0, 22.0,24.0, 22.3) mm for ( Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae ) respectively. In comparison between the antibacterial of the methanol extracts of the cockroach and the paper wasp Polistes watti, extract of the P. americana in more active in the inhibition of all four tested bacteria as follows: ( Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumoniae ) for (7.7, 18.3, 8.7, 6.0) mm respectively. Extract of P. americana have antibacterial activity do to it living in an ecological niche which characterized by organic and bacterial pollution so, the growth of human pathogenic bacteria in more inhibited than the social entomophagous P. watti wasp. The present study had given promise alternative of the personal antibiotics, by as more effective than the standers drugs (Ceftriaxone, Gentamicin) after separation and identification of the active molecules and used as a template for the future manufacturing industry.","PeriodicalId":33491,"journal":{"name":"mjl@ ltrby@ wl`lm","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49080353","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":"Antimicrobial Activity of Local Rhizobial Isolates Against Some fungi","authors":"O. Jumaah, R. Sultan, M. Assafi","doi":"10.33899/edusj.2022.133511.1230","DOIUrl":"https://doi.org/10.33899/edusj.2022.133511.1230","url":null,"abstract":"In this study, three isolates of Ensifer fredii bv. fredii were isolated from root nodules of Vigna unguiculata L. (Cowpea) which collected from different cultural areas in Nineveh Governorate/Iraq. The rhizobial colonies were purified and their agronomic and biochemical characteristics were studied. Microscopic examination results showed rod negative Gram stain bacteria, whereas the three isolates showed ability to grow on rhizobial minimal medium (RMM), motility on TY semi-solid medium, gelatin liquefaction, citrate utilization as a sole carbon source, as well as the isolates showed a positive result for Triple Sugar Iron (TSI). Antimicrobial activity study of local rhizobial isolates against fungi showed a clear effect on studied fungi. The filtrate culture of Ensifer fredii bv. fredii ORM1 showed inhibition zone effect with average 12.6, 10.3 and 12.0 mm against Aspergillus niger MR1, Fusarium solani MR2 and Penicillium spp. MR3, respectively, whereas the filtrate culture of Ensifer fredii bv. fredii ORM13 showed inhibition zone effect with average 10.0, 13.3 and 13.0 mm against Aspergillus niger MR1, Fusarium solani MR2 and Penicillium spp. MR3, respectively. A filtrate culture of Ensifer fredii bv. fredii ORM23 showed less effect against each of Aspergillus niger MR1 and Penicillium spp. MR3 which inhibition zone average 8.6 mm, whereas there is no inhibition effect were recorded for culture filtrate against Fusarium solani MR2.","PeriodicalId":33491,"journal":{"name":"mjl@ ltrby@ wl`lm","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47535356","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":"A Review Of Clustering Methods Based on Artificial Intelligent Techniques","authors":"Baydaa Khaleel","doi":"10.33899/edusj.2022.133092.1218","DOIUrl":"https://doi.org/10.33899/edusj.2022.133092.1218","url":null,"abstract":": Due to the development in various areas of life, the development of the Internet, and the presence of many datasets, and in order to obtain useful information from the rapidly increasing volumes of digital data, there must be theories and computational tools to help humans extract the useful information they need from this data. Large data is collected from many different services and resources. Clustering is one of the most basic and well-known methods of data mining and extraction and obtaining useful information. The technique of recognizing natural groups or clusters within several datasets based on some measure of similarity is known as data clustering. Many researchers have introduced and developed many clustering algorithms based on the different methods of artificial intelligence techniques. Finding the right algorithms greatly helps in organizing information and extracting the correct answer from different database queries. This paper provides an overview of the different clustering methods using artificial intelligence and finding the appropriate clustering algorithm to process different data sets. We highlight the best-performing clustering algorithm that gives effective and correct clustering for each data set.","PeriodicalId":33491,"journal":{"name":"mjl@ ltrby@ wl`lm","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47180171","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":"Performance Analysis of n-ZnO/p-Si Heterojunction Diode as Function of Zinc Oxide Thin Films Thickness","authors":"Hala Nazar Mohammed","doi":"10.33899/edusj.2022.133482.1227","DOIUrl":"https://doi.org/10.33899/edusj.2022.133482.1227","url":null,"abstract":"The n-type Zinc oxide (n-ZnO) nanostructured thin films (TFs) with different thicknesses (211, 325, 433 and 552 nm) were grown onto glass substrates employing the CVD technique at atmospheric pressure. Deposited films were characterized by EDX spectroscopy attached with FE-SEM and XRD techniques to determine the influence of thickness on elemental compositions and crystalline structure of ZnO films, respectively. Also, ZnO TFs were deposited on the p-Si(111) substrates to form different structures of n-ZnO/p-Si heterojunction diodes and then I-V characteristics were studied in the dark. The electrical parameters of the diodes such as rectification ratio (RR), reverse saturation current (I s ), ideality factor (  ), barrier height (  b ) and series resistance (R s ) were calculated from the I-V measurements. EDX spectra showed that these films were only made from Zn and O elements. XRD patterns presented that the ZnO films possess hexagonal wurtzite structure with preferred orientation along [002] direction. I-V characteristics of the heterojunction diodes revealed rectification behavior and depend on ZnO TFs thickness. Also, electrical parameters of diodes were affected by the prepared film's thickness. It was found that the crystalline structure of the films and electrical properties of diodes were improved with increasing the thickness of ZnO films. It is noted that the best heterojunction diodes were that prepared with thickness (552 nm), where possess lowest value of ideality factor (3.38) and a series resistance (0.84 k  ) with a highest rectification ratio (1517), compared with other structures. This study offers a simple model for fabricating diodes","PeriodicalId":33491,"journal":{"name":"mjl@ ltrby@ wl`lm","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44844396","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":"Measurement of Low-Pressure Plasma Parameters by the Floating Double Probe Method for Dry Air and Helium Gas in a Capillary Glow Discharge","authors":"Ashraf Khalid, M. Ahmed","doi":"10.33899/edusj.2022.133290.1223","DOIUrl":"https://doi.org/10.33899/edusj.2022.133290.1223","url":null,"abstract":": The electrical continuous glow discharge is in the capillary tubes. It has gained great interest especially in the applications of liquid crystals as well as display plasmas and soft x-ray lasers. In the present work, an electrical discharge system was designed consisting of a capillary tube and two electrodes. The cathode takes on a hollow geometric shape from nickel material to obtain a high current density. The anode electrode is a tungsten material. The inter-electrodes distance was taken as 12 cm. The floating Langmuir double probe was used as a diagnostic Tool to measure the plasma parameters at different ranges of gas pressure for dry air and helium as working gases. The current-voltage characteristics of the double probe were measured at gas pressure 0.2, 0.3, 0.4, 0.5, 0.6, and 0.7 torr. All measurements are conducted at a constant power of 0.6 watt. Electron temperature and ion saturation current were extracted from the I-V characteristics curves. The electron density, Debye length, and plasma frequency were calculated. It was observed that the electron temperature decreases with increasing working gas pressure. The influence of pressure on electron density and ion saturation current gave a clear similarity to the variation in them with pressure in both gases used. Comparisons of the effect of pressure on plasma parameters in working gases were illustrated. The results were in reasonable agreement with previous research.","PeriodicalId":33491,"journal":{"name":"mjl@ ltrby@ wl`lm","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43007422","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":"Gauss-Hermite Cubature Method to estimate parameters of a multivariate GLMM","authors":"Adnan Al-Sinjary, A. Raheem","doi":"10.33899/edusj.2022.133041.1216","DOIUrl":"https://doi.org/10.33899/edusj.2022.133041.1216","url":null,"abstract":"In this paper, the multivariate generalized linear mixed model (GLMM) was studied when there are three response variables, distributed as Normal, Bernoulli, and Poisson. And because there is a multiple integration in the likelihood function for the model under study, it is necessary to use mathematical methods to solve this integration, and because it is not possible to obtain the result of this integration by the well-known methods of integration, numerical methods have been used, the Gauss-Hermite Cubature (GHC) algorithm, which is one of the most common numerical integration methods. Then the estimates were obtained by maximizing the resulting likelihood function with respect to the parameters, and thus, estimates were obtained for the parameters. On the practical side, we have used real data representing the effect of potassium as a fixed effect, and referring patients were considered as a random effect on three response variables: calcium, creatinine, and urea as they follow Normal, Bernoulli, and Poisson distributions taken from the records of the Vajin Hospital in Dohuk city. The regression coefficients showed that the effect of potassium is positive on both calcium and urea because the values of the coefficients are positive, while its effect is negative on the creatinine because the value of the coefficient is negative. Based on the results, the researchers recommended several recommendations, including estimating the standard error of the estimates in their light, in order to construct hypotheses for a significance test about regression coefficients.","PeriodicalId":33491,"journal":{"name":"mjl@ ltrby@ wl`lm","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41473749","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 Assessment of the Bone Quality with Low Back Pain","authors":"Aya Al-Gorani, M. Al-Jubbori, K. Majeed","doi":"10.33899/edusj.2022.133543.1232","DOIUrl":"https://doi.org/10.33899/edusj.2022.133543.1232","url":null,"abstract":"The aim of this study was to measure osteoporosis in the right heel bone. A total of 123 Iraqi men and women with low back pain (LBP) participated in the study (18 males and 105 females). Quantitative Ultrasound (QUS) was used to assess osteoporosis, speed of sound (SOS), broadband ultrasound attenuation (BUA), and calcaneus bone quality index (BQI). A dual x-ray absorptiometry (DXA) was used to determine tissue thickness, fracture risk factor, and abdominal fat percentage. The results indicate that SOS was 1495.43±18.780 m/sec. Participants had a Z-score of -1.10±1.56. The fracture risk factor for participants was 1.622± 1.90 when DXA measurements were taken. Low back pain measurements revealed that the age group between 51-60 years had the highest prevalence. The correlation between the T-score and the calcaneal SOS is a linear relationship with a P-value of 0.0001. When we examine the relationship between the Z-score and the calcaneal BUA, we see that it is linear and statistically significant (P-value less than 0.0001). The correlations between calcaneal BQI and BMI, as well as between calcaneal BUA and tissue thickness, were found to be statistically insignificant (P-value = 0.8 and 0.8, respectively). The correlation between calcaneal SOS and abdominal fat percent appears to be statistically significant (P-value=0.05) (linear correlation is weak).","PeriodicalId":33491,"journal":{"name":"mjl@ ltrby@ wl`lm","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45480876","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":"Assessment of Tolerance Levels to Air Pollution for Some Species of Trees and Shrubs Growing on Roadsides in Western Mosul City","authors":"Ragda Al-Healy, I. Ibrahim","doi":"10.33899/edusj.2022.132140.1198","DOIUrl":"https://doi.org/10.33899/edusj.2022.132140.1198","url":null,"abstract":": This study was conducted in the western part of Mosul city from 20/9/2020 to the end of spring 2021 to assess the tolerance of some trees and shrubs against air pollution based on the air pollution tolerance index APTI. The sites were tested according to the different traffic density and human activities, and included areas Residential, main and secondary roads, samples of healthy leaves were collected for 19 species of trees and shrubs in the season of summer, winter, spring and autumn, and included some evergreen species such as orientalis Biota, Nerium oleander, Cupressus sempervirens var pyramidalis, Cupressus sempervirens var.horizantalis, Casuarina equistifolia, Olea europaea, Eucalyptus camaldulenses, Pinus brutia, Dypsis lutesens, Washingtonia filifera, Tamarix articulate, Callistemon viminalis, Leucaena leucephala, And falling leaves, Melia azedarach, Morus alba, Ziziphus spina-christi, Ficus carica, Albizia lebbeek, Populus euphratica. . Some biochemical characteristics were used to evaluate the ability of these species to resist pollutants and the possibility of using them for planting on the roadsides. Analysis of variance and LSD test were used to find out the statistical differences between the different species. The results of this study indicated that there was a significant difference between the different species, as a result, the highest value of the relative moisture content of the callistemon viminalis trees in the Al tayaran area was (87.461%) among all other plant species, the Leucaena leucephala trees contained a high percentage of chlorophyll, reaching (1.3375 mg/gm) at a probability level (p ≤ 0.01) and it was significantly superior to all other species in different locations, in addition to the highest value found for ascorbic acid in Nerium oleander leaves, which was (0.6377 mg/g) at (p ≤ 0.01) and significantly outperformed all other trees in different sites, while Morus alba trees had the highest pH value (6.8683) and outperformed most of the other species in different sites. The APTI values for all species ranged between (9.067 and 6.505) and callistemon viminalis trees had the highest APTI value among all roadside plants and were significantly superior to most other species in different locations, also Morus alba at Al tayaran region was tolerant to air pollution.","PeriodicalId":33491,"journal":{"name":"mjl@ ltrby@ wl`lm","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48834813","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 Use of Yellow Sticky Traps to Estimate He Population Density of Insects Accompanying Squash and Cucumber Plants in The Field","authors":"Ahmad Hummadi, Wafaa Yahya","doi":"10.33899/edusj.2021.131919.1193","DOIUrl":"https://doi.org/10.33899/edusj.2021.131919.1193","url":null,"abstract":"The research was performed in AL -Namrud district, south of Mosul city, in autumn season/ 2020 to determine the seasonal presence of insects that accompanying each of the cucumber and marrow,. yellow sticky traps were used for the period from 19/ September until 31/ October, which were placed in the four directions (North, South, East and West) to find out the best direction for catching insects. The results showed that the two plants were infected with insects, aphid and leafhopper and white fly also cucurbit fly insect. Showed the highest average to aphid Aphis sp. 89,33 insect / trap on southern direction in 17/10 And on the cucumber plant. As for the leafhopper insect Empoasca sp. showed highest average for insect 79 insect / trap on Northern direction in 31/10 to cucumber plant, While the highest average was recorded for an insect white fly Bemesia sp. 125 insect / trap on the southern direction in 19/9 on the cucumber plant. while yellow sticky traps did not succeed in Catching a large number of whole insects of the cucurbit fly Dacus ciliatus (Loew) showed highest average 1.33 insect / Trap on the Northern direction in 31/10 on marrow plant.","PeriodicalId":33491,"journal":{"name":"mjl@ ltrby@ wl`lm","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47085341","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}