Liquid membrane electrodes for the determination iron(III) were constructed based on chloramphenicol sodium succinate and iron(III) CPSS-Fe(III) as ion pair complex, with four plasticizers Di-butyl phosphate (DBP); Di-butyl phthalate (DBPH); Di-octyl phthalate (DOP); Tri-butyl phosphate (TBP); in PVC matrix . These electrodes give Nernstian and sub-Nernstian slopes (19.79, 24.60, 16.01 and 13.82mV/decade) and linear ranges from (1x10-5-1x10-2 M, 1x10-5-1x10-2 M, 1x10-6-1x10-2 M and 1x10-5-1x10-2 M) respectively. The best electrode was based on DBP plasticizer which gave a slope 19.79 mV/decade, correlation coefficient 0.9999, detection limit of 9×10-6 M, lifetime 37 day displayed good stability and reproducibility and used to determine
... Show MoreTwo different approaches, univariate and multivariate (simplex method), have been used to obtain the optimum conditions for the quantitative Spectrophotometric determination of Eu3+ using Solochrome violet RS (3-Hydroxy-4-(2-hydroxy phenyl azo) naphthalene -1sulfonic acid) (SVRS) as a chromogenic reagent. The investigation shows that Eu3+ ion forms a wine-red complex with SVRS in alkaline buffer solution having a maximum absorbance at 464 nm against reagent blank. Calibration graphs obtained under univariate and simplex were found to be linear in the range of (0.30-8.0) µg/ml with detection limit 0.061µg/ml and molar absorptivity of 9877.66 L/mol.cm and (0.40-10.0)µg/ml with
... Show MoreSamarium(III) ions react with (l-2(2-benzoinidazolyl-azo)-2-hydroxy-3-naphthoic acid in basic medium (pH = 8.0) forms a red-orange complex at A.max (550nm). The complex was found to be stable for at least 48 hrs. at the given pH. The apparent molar absorptivity is 7776.77 L.mol-1.Cm-1 and a linear calibration curve is obtained in the range (0.639x 10-5M - 6.350x 10 -5M). The stoichiometry of complex was confirmed by using mole ratio method which indicated that ratio of reagent to metal is 3:1. The effects of the presence of different cations and anions as interferences in the determination of samarium(III) under the given conditions were investigated
هدفت الدراسة التعرف على واقع الريادة الاستراتيجية لإدارة بطولات العاب المضرب في العراق من وجهة نظر القائمين عليها ، وإنتهجت الباحثتان أسلوب دراسة الحالة من منهج البحث الوصفي على عينة من الأفراد العاملين في الإتحادات المركزية والفرعية القائمين على إدارة بطولات ألعاب المضرب في (14) محافظة عراقية عدا محافظات أقليم كردستان يمثلون الهيئات الإدارية للاتحادت المركزية والفرعية فضلا عن الحكام والمدربين ، في ثل
... Show MoreEstimation stage is one of most important in process of selecting and identification for fit model, this model gives a best results if the good methods of estimation are depended on, one of those methods is Bayes method for estimation the parameters, it puts an assumption that parameter have a distribution.
This paper studies the robustness of estimators of empirical Bayes to know the properties of those estimators.
The study aimed at identifying hybrid education and employing educational technology, and increasing direct and indirect interaction with teachers and learners and with the educational content. The researcher used the descriptive approach in the survey approach to suit the nature of the study and the study sample was from the students of Anjal schools and the study sample was (50) students from Sixth grade students and the results showed that teaching using the traditional method (direct leadership) leads to an improvement in the student’s learning levels in learning motor skills in individual and team sports, and the study recommended that providing the necessary technological devices and tools to work in the Faculties of Physica
... Show Moreالأخطاء الصوتية الشائعة لدى طلبة معاهد اعداد المعلمين والمعلمات من غير الناطقين باللغة الكردية
ملخـــص البحــــث
فإنَّ الاشتغالَ بعلومِ الشريعةِ مِن أشرفِ العلوم في الدنيا منزلةً، وأعلاها عندَ اللهِ تعالى درجةً، وإن خدمةَ هذه العلومِ ومصنَّفاتها فرض على أبناءِ الأُمةِ الإسلامية، دراسةً وشرحاً وتحقيقاً ولاسيما التراثَ المخطوطَ منهُ.
وقد وَقعَ اختيارنا مِن بينِ هذا التُّراثِ الغالي على تحقيق كتابِ "زبدة الفتاوى" للإمامِ محمد بن يوسف القرماني، وتقدَّمتُ به
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