Al-Mustansiriyah Journal of Sciences最新文献_第6页

ML(θC)-space in topological spaces 拓扑空间中的ML(θC)空间

Al-Mustansiriyah Journal of Sciences Pub Date : 2020-03-01 DOI: 10.23851/mjs.v31i1.730

N. A. Nadhim, H. J. Ali, R. N. Majeed

引用次数: 0

Extraction, precipitation and characterization of urease from Vicia faba L. 蚕豆中脲酶的提取、沉淀及特性研究。

Al-Mustansiriyah Journal of Sciences Pub Date : 2020-03-01 DOI: 10.23851/mjs.v31i1.555

Dalal S. Bedan

{"title":"Extraction, precipitation and characterization of urease from Vicia faba L.","authors":"Dalal S. Bedan","doi":"10.23851/mjs.v31i1.555","DOIUrl":"https://doi.org/10.23851/mjs.v31i1.555","url":null,"abstract":"This study aimed to extract urease enzyme from available plant source which was broad beans (Vicia faba L.) using aqueous solution in a ratio1:3(w:v) .The crude extract appeared enzyme activity 33.3 U/ml. Results of this study revealed the possibility to precipitate urease enzyme after extraction using different precipitation methods consisted of Acetone precipitation; Alcohol precipitation and Ammonium sulfate precipitation, these ways of urease precipitation gave enzyme activities 74.8; 43.6 and 82.2 U/ml respectively .The enzyme precipitation using 60% saturation ratio of Ammonium sulfate gave the maximum activity of urease precipitation among other precipitation methods. Enzyme characterization appeared the optimum pH of urease activity was 8.0 and gave enzyme activity 93.8U/ml, while the optimum pH of urease stability was 6.0; the enzyme maintains its activity. On the other side the optimum temperature of precipitated urease activity was 50°C and the enzyme activity reached 99.3U/ml while the optimal temperature of urease stability was 40°C ,the precipitated urease maintain 100% of activity. The effect of other factors on urease action were studied also, these are consisted of the storage time of enzyme ,urease maintain its activity for 8days and the activity begun to decline after that time; the effect of time reusability was also revealed that the enzyme could be used for six times and maintain its activity. The influence of different mineral salts on precipitated urease were also recorded ;these salts were CuSO4 , MgSO4, MgCl2,KCl,CaCl2and FeSo4, results appeared that magnesium and calcium salts were activator for the precipitated urease while copper ,potassium and ferrous salts were inhibitor of the precipitated urease. Urea concentration as an enzyme substrate were also examined and results appeared the optimal substrate concentration was 30mM; enzyme activity reached to125.2U/ml.","PeriodicalId":7515,"journal":{"name":"Al-Mustansiriyah Journal of Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84839536","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}

引用次数: 5

Key Generation based on Henon map and Lorenz system 基于Henon映射和Lorenz系统的密钥生成

Al-Mustansiriyah Journal of Sciences Pub Date : 2020-03-01 DOI: 10.23851/mjs.v31i1.734

Ansam Sabah Bader, Shaymaa Hameed, Karim Ali

引用次数: 1

Calculate Energy Levels, Energy Ratios and Electric Quadrupole Transition Probability B(E2), of the Even-Even Yb-164 Isotopes Using IBM-1 利用IBM-1计算偶偶Yb-164同位素的能级、能量比和电四极跃迁概率B(E2)

Al-Mustansiriyah Journal of Sciences Pub Date : 2020-03-01 DOI: 10.23851/mjs.v31i1.606

S. Hummadi, O. A. M. safauldeen, Amani Abdullah Kumeel, Anaam Musa Hadee, Raghdaa Hameed Honi

引用次数: 2

Determined Seasonal Variation of Polar Jet Streams over Baghdad City for period 2012-2014 2012-2014年巴格达市极地急流的季节变化测定

Al-Mustansiriyah Journal of Sciences Pub Date : 2020-03-01 DOI: 10.23851/mjs.v31i1.229

Ramia M. Mahmood, Ahmed S. A. Hassan

引用次数: 0

Evaluation the activity of Petroselinum crispum aqueous extract as promoter rooting for stem cuttings of some plants 石竹水提物对某些植物茎插枝生根促进作用的评价

Al-Mustansiriyah Journal of Sciences Pub Date : 2020-03-01 DOI: 10.23851/mjs.v31i1.746

S. Bashir, A. Al-Habib

{"title":"Evaluation the activity of Petroselinum crispum aqueous extract as promoter rooting for stem cuttings of some plants","authors":"S. Bashir, A. Al-Habib","doi":"10.23851/mjs.v31i1.746","DOIUrl":"https://doi.org/10.23851/mjs.v31i1.746","url":null,"abstract":"This study was conducted in the botanical garden, Department of biology, College of Science/ Mustansiriyah University in from (15 February to 15 March, 2019) under the natural environmental conditions in the greenhouse in order to evaluate the effectiveness of parsley aqueous extract as a promoter for rooting. The study included the use of aqueous extract of a plant Parsley ( Petroselinum crispum ) extract was used in concentrations (1.25, 2.5 g / l), compare with IBA in concentration (100 mg / L) with dipping time 24 hour for all treatments. The cutting stems were included Rosmarinus officinalis , Nerium oleander , Olea europaea , Plumeria alba , Hibiscus rosa , Pelargonium graveolens , and Myrtus communis . The following measurements were taken after 30 days from the beginning of the experiment: rooting percentage, (number and length of roots), number of new (leaves and branches). Plant hormone concentrations, oxidative enzyme activity (SOD, POS) and amino acids were also analyzed for the extract that gave the highest values for all traits. The results showed that there were significant differences between treatments, and indicated that parsley extract in the concentration (2.5 g / L) was more exceeded compared with other treatments. The chemical analysis of parsley extract showed the presence of the hormones IAA, GA3, cytokinin and ABA as well as the highest activity of the antioxidant enzymes (POS and SOD), also the analysis of parsley indicated the presence of several types of amino acids, including Tryptophan, Glutamic acid, alanine, valine, Tyrosine, Phenylalanine Histadine, Ornithine, Arginine and other amino acids. In conclusion, the Parsley extract can be used as promoter rooting for stem cuttings as a new method instead of using plant growth regulators , Replace the IBA which used in the rooting of stem cuttings by some natural extracts which can stimulate the rooting process.","PeriodicalId":7515,"journal":{"name":"Al-Mustansiriyah Journal of Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76869726","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}

引用次数: 1

False Matches Removing in Copy-Move Forgery Detection Algorithms 在复制-移动伪造检测算法中去除假匹配

Al-Mustansiriyah Journal of Sciences Pub Date : 2020-03-01 DOI: 10.23851/mjs.v31i1.748

Muthana S. Mahdi, S. N. Alsaad

引用次数: 0

Comparison of Some Drought Indices in Iraq 伊拉克一些干旱指数的比较

Al-Mustansiriyah Journal of Sciences Pub Date : 2020-01-15 DOI: 10.23851/mjs.v30i4.674

Usama S. Nedham, Ahmed S. A. Hassan

{"title":"Comparison of Some Drought Indices in Iraq","authors":"Usama S. Nedham, Ahmed S. A. Hassan","doi":"10.23851/mjs.v30i4.674","DOIUrl":"https://doi.org/10.23851/mjs.v30i4.674","url":null,"abstract":"Drought in Iraq was assessed using three drought indices for two different time periods, past period from 1970 to 2015, and future period from 2016 to 2050 for 4 stations in Iraq. These indices named: the Standardized Precipitation Index (SPI), Percentage of Precipitation Anomaly (PPA), and Z-Score Index (ZSI). The main sources of data were the monthly rainfall archive from Iraqi Meteorological Organization and Seismology (IMOS) for past period, and projection monthly precipitation data from Representative Concentration Pathway scenario (RCP4.5) for Fifth Assessment Report (AR5) affiliate to the Intergovernmental Panel on Climate Change (IPCC) for future period. The results shown good correlation of among 3 indices, with different rank of them, were lowest rank was 0.85. The three indices refer to were good evaluate the drought severity of Iraq. Found too the best index was PPA during past period, and the significant index was ZSI for the future period. The North of Iraq (Mosul Station) was the least vulnerable to drought from the analysis of the results of the three indices for the last period, where the number of dry seasons were 12 on the basis of the PPA classification. South of Iraq (Basra station) has the highest number of wet season on the PPA rating were (15) season.","PeriodicalId":7515,"journal":{"name":"Al-Mustansiriyah Journal of Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78828291","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}

引用次数: 3

Quality Control of Precipitation Measurement for Selected Stations in Iraq 伊拉克选定站点降水测量的质量控制

Al-Mustansiriyah Journal of Sciences Pub Date : 2020-01-15 DOI: 10.23851/mjs.v30i4.715

Ali J. Jaafar, A. Al-Lami

{"title":"Quality Control of Precipitation Measurement for Selected Stations in Iraq","authors":"Ali J. Jaafar, A. Al-Lami","doi":"10.23851/mjs.v30i4.715","DOIUrl":"https://doi.org/10.23851/mjs.v30i4.715","url":null,"abstract":"In this research, quality control and homogeneity tests were performed for 20 surface meteorological stations records in Iraq. For this purpose, the annual precipitation data series at the stations of Iraqi meteorological organizations and seismology for the period (1981-2010) were considered. Quality control procedure involving outlier detection using Mandel’s k method. Homogenization were analyzed by using four absolute methods tests namely SNH test, Pettitt test, BR test and VNR test, these tests were chosen to detect the inhomogeneity in data, the results of each test were evaluated at significance level 0.05. Results of Mandel’s K methodwere classified into four categories (Normal, Abnormal 1, Abnormal 2 and Extreme) and represented in GIS software.The results showed that 5 % of station classified as Normal, 20% of stations classified as Abnormal 1, 25% of stations classified as Extreme and 50% of stations were classified as Abnormal 2. The homogeneity tests results displayed that 5% of station assigned as “doubtful” class with break years found in (1998) for (Pettitt and BR) tests, 50% of stations assigned as “useful” class , and the other stations which represent 45% assigned as “suspect” class with break years detected for (Pettitt, SNH and BR) tests most found in (1998 ad 1999) were represents 28% of break years, 21% of break years found in (1997) and other break years found between (1991-2004).","PeriodicalId":7515,"journal":{"name":"Al-Mustansiriyah Journal of Sciences","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78696044","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}

引用次数: 0

Magnetic Properties of the Spinel Ferrite MgZnFe2O4 Deposited on Glass Using Pulsed-Laser Ablation Method 脉冲激光烧蚀法沉积在玻璃表面的尖晶石铁素体MgZnFe2O4的磁性能

Al-Mustansiriyah Journal of Sciences Pub Date : 2020-01-15 DOI: 10.23851/mjs.v30i4.699

T. H. Lazem, K. Kadhim, I A Atheer

引用次数: 0