Show: 25 50 75 100 Results

Search results: 25 out of 53

التفكك الضوئي المحفز لصبغة الانيلين الازرق باستخدام اشباه موصلات مختلفة == Photocatalytic Degradation of Aniline blue dye by using different semiconductors

Author name: هناء كاظم كزار الموسوي
Supervisor name: عامر موسى جودة | مثنى صالح مشكور
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf

الاكسدة الضوئية المحفزة لصبغة فلوروسين الصوديوم باستخدام مصادر تشعيــع مختلفة == Photooxidation Catalyst of Fluorescein Sodium dyes by using different sources of light

Author name: نور مصطفى كمال الموسوي
Supervisor name: عامر موسى جودة | سامي وحيد راضي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: Arabic
University location: Najaf

تحضير وتشخيص بعض معقدات العناصر الفلزية مع ليكاند ازو غير متجانس الحلقة جديد == Preparation and Characterization of Some Metals Complexes with New Heterocyclic azo Ligand

Author name: احمد رزاق ابراهيم الفارس
Supervisor name: رحيم طاهر مهدي الساعدي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: Arabic
University location: Najaf

التقدير الطيفي لايوني البلاتين (II) والبلاديوم (II) كمعقدات مع الكاشف الجديد 1 - (4 - انتي بايرول ازو) حامض السلسليك == Spectrophotometric determination of Platinum (II) and Palladium (II) as Complexes with New Reagent - (4 - antipyriyl azo) Salicylic acid

Author name: نبا كريم سعيد محمد القريشي
Supervisor name: حسين جاسم محمد
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:
Abstract: تم في هذه الدراسة تحضير الكاشف الجديد 1 - ('4 - انتي بايرايل آزو ) حامض السالسليك (APASA) وتم دراسة الكاشف المحضر مع (عشرة) ايونات فلزية مع استحداث طريقة طيفية لتقدير كل من ايوني البلاديوم (II) ,والبلاتين (II) بهذا الكاشف ,و كان الطول الموجي للامتصاص الاعظم للكاشف ((APASA (458) نانوميترو الطول الموجي للمعقدات المتكونة لايونات البلاديوم (II) ,والبلاتين (II) مع الكاشف (540, 488) نانوميتر على التوالي في الوسط المائي ,فضلا عن دراسة الظروف الفضلى لتفاعل هذه الايونات مع الكاشف ,كحجم وتركيز الكاشف, والدالة الحامضيه, والمدة الزمنية لاستقرارية المعقدات المتكونة ودرجة الحرارة, وترتيب الاضافة لمكونات التفاعل , وتم تحديد منحني المعايرة لكل هذه الايونات مع الكاشف فكان معقد البلاديوم (II) يقع ضمن مدى التراكيز (0.1 - 04.0) جزء بالمليون بمعامل ارتباط ( 0.9942 ( R2= وقيمة معامل الامتصاص المولاري ε( 1.2 x105) لتر.مول - 1.سم - 1وحساسية ساندل (8×10 - 3) مايكروغرام .سم - 2 . ووقع معقد البلاتين (II) ضمن مدى التراكيز ( - 0.1 2.00) جزء بالمليون بمعامل ارتباط 0.9961)=(R2 وقيمة معامل الامتصاص المولاري ε 4.2x105 )) لتر .مول - 1 .سم - 1 وحساسية ساندل (4×10 - 3) مايكروغرام .سم - 2. وتم دراسة طبيعة المعقدات الذائبة المتكونة بين ايوني البلاديوم(II), والبلاتين (II) مع الكاشف من خلال ايجاد نسبة الايون الفلزي الى الكاشف (M : L) باستعمال طريقتي التغيرات المستمرة والنسبة المولية لكل معقد فكانت تساوي (1 : 2) للمعقدين عند دالة حامضية( 3,8)على التوالي ,وتم ايضا حساب ثابت الاستقرارية (Kst) للمعقدين وكانت تساوي (Kst= 3x109) لتر2 .مول - 2 و(Kst=2x109) لتر2 .مول - 2 لمعقدي البلاديوم والبلاتين على التوالي مما يدل على ان المعقدات ذات استقرارية عالية . وتم تحديد ضبط ودقة الطريقة التحليلية المتبعة باستعمال محاليل قياسية من هذه الايونات مع تركيز قياسي للكاشف فكانت التكرارية (R.S.D.%) فيما يخص تركيز ((1.5جزء بالمليون من البلاديوم (II) والبلاتين (II) ,وهي تساوي الى ( 0.4, 0.77) وكانت النسبة المئوية للدقة (Erel. %) 0.6,0.7))% لكل ايون على الترتيب . وفيما يخص التركيز (2.00) جزء بالمليون من البلاديوم (II), والبلاتين (II) فهو (0.80 0.3,) وكانت النسبة المئوية للدقة (Erel. %) (0.8 , 0.5,) % لكل ايون على الترتيب. وعينت التداخلات المحتملة للايونات قيد الدراسة فضلا عن الايوني البلاديوم (II ) والبلاتين (II ) بعضها مع البعض, وتم دراسة اضافة عوامل الحجب المناسبة .و رواسب المعقدات بتحديد بعض الصفات الفيزيائية لها مثل درجة الانصهار وقابلية الذوبان والتوصلية المولارية فضلا عن قياس اطياف الاشعة تحت الحمراء مع اقتراح الصيغة التركيبية للمعقدات المتكونة مع الكاشف (APASA ) . وتم تطبيق الطريقة التحليلية المتبعة على محاليل قياسية مختبرية محضرة وتم تطبيقها ايضا على نماذج بايولوجية ومياه النهر لمعرفة تراكيز ايوني البلاديوم(II) والبلاتين(II) فيها . | The research includes primary study of the reaction of 1 - ( '4 - anti pyriyl azo) Salicylic acid (APASA) with (Ten) metal ions ,and development of Spectrophtometric method for the determination of Palladium (II) and Platinum (II)with this reagent . The wavelength of maximum absorption for the reagent was found at (458) nm and for the complexes formed between these ion with this reagent was found at (540,488) nm for Pd (II) and Pt (II), respectively in aqueous medium ,also the optimum conditions for the reaction of these ion with the reagent were employed ,such as the volume of reagent solution ,time ,temperature, order of addition and effectives of pH, The calibration curves of these complexes were constructed ,Beer,s law was obeyed in the range of (4.0 - 0.1) ppm for Palladium (II) with a correlation coefficient of ( R2 =0.9942) and molar absorptivity( ε =1.2x105) L.mol - 1.cm - 1 and sandell sensitivity was (8×10 - 3) μg.cm - 2 . For Platinum (II) the rang was (2.0 - 0.1) ppm with a correlation coefficient of (R2 =0.9961) molar absorptivity (ε =4.2x105) L.mol - 1 .cm - 1, and sandell sensitivity was (4×10 - 3) μg.cm - 2 . . The stoichiometry of the formed soluble complexes among Palladium (II) and Platinum (II) with reagent was investigated by both the continuous variations method and mole ratio method ,the ratio (M : L) was (1 : 2) for complexes at pH(8 and 3) respectively .The stability constant (Kst) for the complexes were equal to (Kst =3 x109L2.mol - 2) and (Kst =2 x109L2.mol - 2) for Palladium(II) and Platinum (II) respectively . . Precision and accuracy of the analytical procedure were showed for (1.5) ppm of Pd(II) and Pt (II) that R.S.D% was equal to (0.77 and 0.4 %) and Erel % was found to be (0.7% and 0.6%) for these ions , respectively. the analytical procedure were showed for (2.00) ppm of Pd(II)Pt (II) that R.S.D% was equal to (0.80 and 0.3 %) and Erel % was found to be (0.8 and 0.5%) for these ions , respectively. . The interference of metal ions in the presence of related ions was determined , as well as masking of these ions by suitable masking agents was studied. The physical properties of precipitants were studied through the establishment of melting point, solubility and molar conductivity as well as the measurement of infrared spectra ,with the suggestion of structural formula of the formed complexes with the reagent (APASA). The method was applied for the determination of the content of Pd(II) and Pt (II), in environmental samples and biological samples.

تحوير السيليكا المستخلصة من مخلفات الرز (السبوس) الى كبريتات الامونيوم غير المتجانسة ودراستها في تحلل السليلوز الى وقود حيوي == Modification of Silica Rice Husk Ash to Heterogeneous Ammonium Sulphate for the Hydrolysis of Cellulose to Biomass

Author name: استبرق محسن ياسر
Supervisor name: ماجد جاري محمد | قاسم محمد حلو
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:
Abstract: تتضمن هذه الدراسة تطعيم السيليكا المستخلصة من قشور الرز ( السبوس) مع مركب 3 - امين بروبيل تراي ايثوكسي سايلين لتحضير المركب RHAPrNH2 عومل هذا المركب مع حامض الكبريتيك بطريقة التفاعل المباشر عند درجة حرارة الغرفة لتحضير العامل المساعد الجديد غير المتجانس RHNH3SO4H. استخدمت عدة تقنيات منها مطيافية الاشعة تحت الحمراء FT - IR وتحليل العناصرCHN وتحليل امتزاز النتروجين وتشتت الاشعة السينية EDX والمجهر الالكتروني الماسح SEM والمجهر الالكتروني النافذ TEM والتحليل الحراري الوزني TGA والتحليل الحراري التفاضلي DTA لتشخيص العامل المساعد غير المتجانس وجميعها اثبتت نجاح عملية تفاعل حامض الكبريتيك مع مجموعة الامين لتحضير كبريتات الامونيوم غير المتجانسة على سطح السيليكا. اظهرت نتائج تحليل العناصر وEDX زيادة في نسبة الكربون عما هي موجودة في RHA وظهور نسبة للكبريت التي لم تكن موجودة في .RHAPrNH2 اثبتت الكشوفات الحامضية باستخدام تقنية امتزاز البريدين والتي اجريت على سطح العامل المساعد غير المتجانس وجود مجاميع برونشتد الحامضية. الجانب الاخر الذي تتضمنه الدراسة هو استخلاص السليلوز من مختلف النفايات الزراعية والصناعية مثل ( قشور الرز, سعف النخيل ومخلفات الورق المستخدم) عبر تقنية بسيطة وسريعة بحيث بلغت نسب السليلوز المستخلص من المصادر الثلاث (قشور الرز 25.1 %, من سعف النخيل 19.2 %, ومن مخلفات الورق المستخدم 40 %). استخدم العامل المساعد غير المتجانس في تحلل عينات السليلوز المستخلص الى كلوكوز في 6 ساعات ليستمر تحلل الكلوكوز المتكون الى المركبات اخرى لم يتم تشخيصها خلال فترة 6 ساعات ليكون زمن التحلل الكامل 12 ساعة. تمت دراسة الظروف المثلى لتحلل السليلوز الى الكلوكوز ومنه الى المنتجات الاخرى وقد اظهرت النتائج ان الظروف المثلى للتحلل هي 150 ملي غرام كافضل وزن من العامل المساعد وان مزيج ثنائي مثيل فورم امايد او سايكلوهكسانول مع كلوريد الليثيوم من افضل الانظمة لاذابة السليلوز كما وان تحلل السليلوز الى كلوكوز بلغ 98 % عند 6 ساعات. وقد وجد ان الكلوكوز يتحلل على نفس العامل المساعد خلال 6 ساعات اخرى. اظهرت النتائج ايضا ان العامل المساعد المحضر يمكن استخدامه لمرات عديدة في تحلل السليلوز دون ان تقل فعاليته | In this study, the silica which extracted from rice husk ash (RHA) was immobilized with 3 - (aminepropyl)triethoxysilane (APTES) to produce RHAPrNH2. The RHAPrNH2 was treated with sulphuric acid to give a heterogeneous catalyst (RHNH3SO4H) via a one - pot synthesis at room temperature. The FT - IR, CHN, N2 adsorption - desorption, X - ray diffraction, scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X - ray (EDX), thermogravimetric analysis (TGA), differential thermal analysis (DTA) confirm the successful transformation of amine group onto RHAPrNH2 to the ammonium sulphate. The micro elemental analysis and EDX results showed an increasing in the carbon percentage and presence of sulfur which is not found in RHAPrNH2. The acidity test using pyridine adsorption study showed that the new heterogeneous catalyst (RHNH3SO4H) had a Brønsted acid site. Another aim of this study is to extract the cellulose from different agricultural and industrial waste sources. These waste are rice husk, palm kernel and waste office paper. It was found that the yield of extracted cellulose from rice husk was 25.1%, from palm kernel was 19.2 % and from waste office paper was 40.0 %. Cellulose from the above mentioned waste sources were hydrolyzed using RHNH3SO4H as a catalyst to produce glucose during 6 h, and the glucose was hydrolyzed afterward to other products within another 6 h. The optimum conditions time, mass of catalyst, temperature, reusability of the catalyst, effect of different solvents, and the chloride salts effect on the hydrolysis of cellulose were studied. The results showed that using 150 mg of RHNH3SO4H, in DMF or cyclohexanol as a solvent with LiCl at 120 ˚C for 12 h were the best optimum conditions. The maximum hydrolysis of cellulose to glucose over the catalyst (RHNH3SO4H) was 98 % during 6 h. The catalyst is reusable many times without a significant loss of catalytic activity.

تقدير الكميات الضئيلة من الخارصين (II) والنحاس (II) والنيكل (II) باستعمال الكاشف الجديد انتي بايرايل ازو (2,7) - نفثالين دايول بالطرق الطيفية == Determination of Trace Amounts of Zinc (II) , Copper (II) And Nickel (II) Using New Reagent of Antipyriyl Azo(2,7) - Naphthalindiol By Spectrophotometric Methods

Author name: مسار علي عواد عناد الزيادي
Supervisor name: حسين جاسم محمد
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: Arabic
University location: Najaf
First pages:
Abstract: تم في هذه الدراسة تفاعل الكاشف المحضر الجديد 1 - ('4 - انتي بايرايل ا?زو ) 2,7 - نفثالين دايول(1 - APANDOL) مع (11) ايون فلزي مع استحداث طريقة طيفية لتقدير كل من ايونات الخارصين (II) ,والنحاس (II) ,والنيكل (II) بهذا الكاشف اذ كان الطول الموجي للامتصاص الا | The research includes primary study of the reaction of 1 - ( '4 - anti pyriyl azo) 2,7 - naphthalindiol (1 - APANDOL) with (11) metal ions ,and development of Spectrophtometric method for the determination of Zinc (II) ,Copper (II) and Nickel (II)with this reagent. The wavelength of maximum absorption for the reagent was found at (453) nm and for the complexes formed between these ion with this reagent was found at (492,499,514) nm for Zinc (II), Copper(II) and Nickel (II), respectively in aqueous medium ,also the optimum conditions for the reaction of these ion with the reagent were employed ,such as the volume of reagent solution ,time ,temperature, order of addition and effectives of pH, The calibration curves of these complexes were constructed ,Beer,s law was obeyed in the range of (0.1 - 2.5) ppm for zinc (II) with a correlation coefficient of ( r =0.9976) and molar absorptivity( ? =1.3x104) L.mol - 1.cm - 1 and sandell sensitivity was (0.0049) ?g.cm - 2. For copper (II) the rang was (0.1 - 2.5) ppm with a correlation coefficient of (r =0.9979) molar absorptivity (? =1.9x104) L.mol - 1.cm - 1, and sandell sensitivity was (0.0032) ?g.cm - 2 , as for nickel (II), the range was (0.1 - 2.0) ppm with acorrlation coefficient (r =0.9962) and molar absorptivity (? =2.0x104) L.mol - 1.cm - 1 and sandell sensitivity was ( 0.0029) ?g.cm - 2 The stoichiometry of the formed soluble complexes among Zinc (II), Copper (II) and Nickel (II) with reagent was investigated by both the continuous variations method and mole ratio method ,the ratio (M : L) was (1 : 2) for complexes at pH(8,8 and 9) respectively.The stability constant (Kst) for the complexes were equal to (Kst = (Kst =0.29 x108L.mol - 1) (Kst =1.6 x1010L.mol - 1) and (0.128 x108L.mol - 1) for Zinc ,Copper and Nickel respectively. Precision and accuracy of the analytical procedure were showed for (0.5) ppm of Zinc(II) , Copper(II) and Nickel (II) that R.S.D% was equal to (1.41 , 0.77 and 0.63 %) and Erel % was found to be (0.53% ,0.65% and 0.95%) for these ions , respectively. the analytical procedure were showed for (1.0) ppm of Zinc(II), Copper(II) and Nickel (II) that R.S.D% was equal to (0.58, 0.36 and 0.4 %) and Erel % was found to be (0.28%,0.30% and 0.99%) for these ions , respectively.The interference of metal ions in the presence of related ions was determined , as well as masking of these ions by suitable masking agents was studied. The physical properties of precipitants were studied through the establishment of melting point, solubility and molar conductivity as well as the measurement of infrared spectra ,with the suggestion of structural formula of the formed complexes with the reagent (1 - APANDOL). The method was applied for the determination of the content of Zinc(II), Copper (II) and Nickel (II), in tea leaves.. Finally ,The biological activity of these complexes was tested with two types of bacteria.

تحضير دقائق مغناطيسيه متناهيه الصغر (نانو) ودراسة تقييدها لانزيم الزانثين اوكسيديز == Prepared of Magnetic Nanoparticles And Study The Immobilized For Xanthine Oxidase

Author name: مصطفى محمد كريم
Supervisor name: حسين كاظم الحكيم
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:
Abstract: The purpose of this thesis is to report quantum chemical investigations into a series of problems related to contemporary organometallic chemistry. In recent years density functional approaches have become the most commonly used theoretical methodology in organometallic chemistry. Alongside these developments, a number of new tools for analyzing electronic structure such as topological analysis of electron density (Atoms in Molecules theory) have emerged. As a result, theory is now in a position to compute ab initio many of the experimental observables that underpin modern organometallic chemistry.The bonding in the Triosmium carbonyl cluster 1 [Os3(? - H)(? - ?2 - dpa - N,N)(CO)10] and Triosmium carbonyl cluster 2 [Os3( ? - H)2(NHC)(CO)9] are explored using the Quantum Theory of Atoms - in - Molecules (QTAIM). The metal - metal and metal - ligand bond critical points properties ?(r), ?2?(r), H(r), G(r), V(r) and ellipticity, and also the bond delocalization indices ?(A, B), are correlated with the data from previous studies of the organometallic systems. These results have allowed a comparison between topological properties of different atom - atom interactions. In the core of dihydride triosmium cluster 2, Os3H2 part, the topological data recognizes the existence of a bond path in the dihydride bridged Os atoms, Os(1) - Os(3) edges, whereas in monohydride triosmium cluster 1 there is no direct bond path has been found for the interaction between the hydride bridged Os atoms, although a non - negligible delocalization index ?(Os(1)...Os(2)) has been obtained for this non - bonding interaction. A multicenter 4c - 4e interaction is proposed to exist in the core part, Os3H, in cluster 1 and bridged part, Os(1) - H(1) - Os(3) - (H2) in cluster 2. In addition, an interaction of 5c - 5e type is proposed to exist in the core part, Os3H2. All topological parameters calculated for the Os - N and Os - C bonds between the osmium atoms and the pyridyl and NHC ligands in compound 1 and 2, respectively, are similar, and they confirm that these interactions are pure ? bond. The analysis of the topological parameters of the NHC and pyridyl ligands bonds confirm the existence of ? - electron delocalization within the six - membered ring of pyridyl ligand and hindered ? - electron delocalization within the five - membered ring of NHC ligand with some double - bond character in the interaction of the carbine C atom with the adjacent N atoms.

تحضير وتشخيص مركبات غير متجانسة حلقية متعددة من مشتقات الازو اوقواعد شف == Synthesi And Identifecation of Heterocyclic Multiple Ring Compounds of Azo Derivatives And Schiff Bases

Author name: ولاء فاضل عبد ضفير
Supervisor name: فائز عبد الحسين عبد الرماحي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: Arabic
University location: Najaf
First pages:
Abstract: تتضمن هذه الرسالة تحضير وتشخيص عدد من معقدات البلاديوم (??) والبلاتين (II) مع مزيج من ليكاندات الثايويوريا او الحلقات غير المتجانسة الحاوية على الامين مع السكارين او الثايوسكارين. وحضرت معقدات من النوع [M(L)2] حيث ان : M = Pd (??) , Pt (??) , L = PTUH ( | Work in this thesis includes synthesis and characterization of some palladium(??) and Platinum(II) mixed ligand complexes of thiourea or hetrocyclic amine and saccharin or thiosaccharine.Complexes of the type [M(L)2] were prepared, {M= Pd(??) , Pt(II) , L= PTUH}where : (PTUH) = {N - Pheny1 - N - (2 - thiazoyl)thiourea} by treatment of the appropriate ligand with Na2PdCl4 or K2PtCl4 to give square planer complexes, in which thiourea anoin ligand behave as a bidentate coordinate to metal through the S atom of thioamide group and the nitrogen atom of thiozolComplexes of the type trans - [MCl2(L)2] L =ABI , AT , M = Pd(?? ) , Pt(??)ABI = 2 - amino Benzimidazol وAT = 2 - aminothiazolwere prepared by treatment of the appropriate ligand with Na2PdCl4 or K2PtCl4 to give square planer complexes , in which benzimidazol and thiazol behave as monodentate coordinate to Pd(??) metal through the N atom while the Palladium thiazol complex showed two isomer the N and S - bonded isomer.Palladium (??) or Pt(II) complexes of the type trans - [Pd(sac)2(L)2] were prepared by treatment of trans - [PdCl2(L)2] with Nasac. Sac anion ligand behaves as a monodentate coordinate to Pd (??) metal through the N atom.Thiosaccharinate complexes of the type trans - [Pd(tsac)2(L)2] (L=ABI, AT) were prepared in which (L) behaves as a monodentate which coordinate to Pd(??) metal through the cyclic N atom while the thiosaccharin anion behaves as a monodentate ligand coordinated to palladium metal through the sulfur atom. The PTUH ligand was characterized by infrared spectra and (1H n.m.r).The prepared complexes were characterized by molar conductances, Elemental analysis, Infrared spectra, 1H n.m.r data also the structure of trans - [Pd(PTU)2] and cis - [Pt(PTU)2] were determined by single crystal x - ray diffraction.The complex trans - [Pd (PTU)2] crystallizes in the monoclinic space group p 21/c with a= 12.510(17) ? , ? = 5.6963 ?, C=15.322(2) ? ?=90° , ?=90.066(17) ° , ?=90° and Z=2 Molecules per unit Cell. The complex cis - [Pt(PTU)] crystallizes in orthorhombic space group with a=7.3021(5) ?, b=11.8025 (9) ?, C=25.6282(19) ?, ?=90 ?, ?=90(17) °, ?=90 and Z=4 Molecules per unit Cell.

دراسات كيمياء الكم لمركبات الروثينيوم العضوية الفلزية == Quantum Chemical Studies of Ruthenium Organometallic Compounds

Author name: دريد توفيق عريبي الكنبي
Supervisor name: محسن عبود محسن العبادي | حسين جاسم محمد
General topic: Chemistry
Specific topic: Chemistry
Degree: Doctorate
Language: English
University location: Najaf
First pages:
Abstract: There are a wide variety of polyphenolic compounds named flavonids. These are extensively distributed in plants, and they are considered to be dietary antioxidants. They occur naturally in broad range of vegetables, fruits, and primarily recognized as the pigments.Many flavonoids have a metallic ion complexation capacity. The study of this capacity is important because it can be used in producing nutritional supplements, medicine, and heavy metal detoxification.Chelation therapy is the use of chelating agents (complexing agents) to detoxify poisonous metal such as mercury, arsenic, and lead by converting them to chemically inert form that can be excreted without further interaction with the body.Lead is considered as one of the most hazards and cumulative environmental pollutants that affect all biological system through exposure from air, water and food sources. It is toxic heavy metals which are known to induce a broad range of physiological, biochemical and behavioral dysfunction in humans. Because of its perverseness in the environment, lead poisoning still remains an important health problem.The polarographic measurements were carried out using differential pulse polarography (DPP), at hanging mercury drop electrode (HMDE) at the optimal conditions for flavonoids which were 1M HCl for Quercetin, Rutin, and Hespertin and 0.01M NaOH for chrysin as a supporting electrolyte.A well - defined two electron reversible reduction and diffusion controlled one wave for these flavonoide were observed, a linear relationship between concentration and diffusion current (id) was obtained with the value of correlation coefficient (r2) near to one, this obey Ilkovic equation. The values of n; the number of electrons transferred in the reduction process were obtained from the slop of the straight line corresponding to E vs. log i/id - i.Addition of flavonoides to a solution of Pb (II) ion, show the appearance of a new peak in a more negative potential than Pb (II) peak, with the gradual decrease in id of Pb (II) ion which suggests the complex formation between them.The stoichiometry and the stability constant of Pb (II) complex with flavonoids were calculated by Lingane equation; a plot of ?Ep vs. log [L] give a straight line, the slope of the line allows the determination of the coordination number (p), and the stability constant were determined from the intercept, the stoichiometry of these complexes were (1 : 1) with a stability constant of : Pb - Quercetine (5.5*107) ? Pb - Rutine (1.3*107) ? Pb - Hespertine (4*106) ? Pb - Chrysin (5.4*104)These measurements also includes the determination of the kinetic parameter of the electrode reaction (Kth, ?n) and the thermodynamic parameters such as ?H, ?G, and ?S.The spectrophotometric measurements were carried out in 50% methanol/water for Quercetin and Rutin, 30% methanol/water for Hespertin and in phosphate buffer of pH - 7 for Chrysin.The electronic spectrum of free flavonoides in methanol solution was mainly characterized by an important absorption band at ? 370 nm (band I) and a second one located at ? 256 nm (band II). Upon addition of lead (II) to the flavonoids solution significant changes are observed in the electronic spectra, a bathochromic shift in band (I) to the extent of ? 40 nm and a shift in band (II) to the extent of ? 7 nm, the change in ?max and the change in the intensities of the bands were due to the coordination between flavonoids molecules and Pb (II) ion.The stoichiometry of the formed complexes were investigated by the method of continuous variation and it were found (1 : 1), the stability constant were calculated also and were found to be in the order of ? 105 to 106.Thermodynamic parameters and kinetic studies were also determined which indicates a second order interaction between lead (II) and these flavonoides.Spectroscopic measurements for (EDTA) Complexation with lead (II) were carried out in order to compare its stability constant with that obtained for flavonoides complexes, due to its application in the treatment of metal poisoning.Stability constant of (EDTA) with Pb (II) complex were in the order of 108 which is much more efficient than flavonoides.

دراسة بعض القياسات الكيموحياتية والمناعية في مرض الفصام واضطرابات الاكتئاب الشديد في مدينة النجف الاشرف == Study of Somebiochemical And Immunological Parameters In Schizophrenia And Major Depressive Disorders In Najaf Alashraf Province

Author name: دعاء عبد الزهرة محمد علي الرماحي
Supervisor name: حسين كاظم الحكيم
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:
Abstract: شملت هذه الدراسة (56) عينة لادرار وامصال دم المرضى المصابين باورام البروستات ومقارنتها مع (62) عينة من الاصحاء وكانت اعمارهم تتراوح (40 - 80) سنة.ولقد اظهرت الدراسة النتائج الاتية : 1 - تم قياس نشاط انزيم اللاكتيت ديهايدروجنيز (LDH) في ادرار وامصال دم ا | This study was performed on (56) patients with prostatic tumors , in addition (62) apparently healthy subjects with ages ranged (40 - 80) years were investigated as a control group.This study showed the following results : 1 - Total serum protein in prostatic tumor patients showed a significant decrease in comparison to healthy subjects. While urinary protein and creatinine showed a significant increase. 2 - Patients with prostatic tumors showed a highly significant increase (P< 0.05) in serum and urine Lactate dehydrogenase (LDH) activity compared to healthy subjects. 3 - A significant increased in activity of acid phosphatase (ACP) and prostatic acid phosphatae (PAP) was shown in serum of prostatic tumor patients compared to apparently healthy subjects.4 - The results revealed a positive correlation of age with (LDH) activity in patients urine and with (PAP) activity in patients serum in addition there was a positive correlation of (LDH) activity in patients urine with (PAP) activity in patients serum. 5 - LDH isoenzymes were isolated and partially purified from patients urine , by using gel filtration (Sephadex G - 150) and ion - exchange, chromatography (DEAE - Cellulose A - 50) with pH gradient.6 - Kinetic Studies of (LDH) isoenzyme were carried out , which included the effect of different concentrations of substrates (Sodium pyruvate and NADH) , pH and temperate. The Km values of isoenzym (LDH1) were 2.6 , 51.7 for sodium pyruvate and NADH respectively (by Lineweaver - Burk piot) and 2.57 , 50 (by Hans - Woolf plot) and the optimum pH was 7 , optimum temperature was 50 C0. 7 - The isoenzyme (LDH1) obeyed Arrhenius equation and its (Ea) and (Q10) constants were determined

تحضير وتشخيص بعض مشتقات الاندول الجديدة ودراسة فعاليتها البايولوجية == Synthesis and Characterization of Some New Indole Derivatives and Study Biological Activity

Author name: حيدر عبد الامير عبد الهادي
Supervisor name: ناجي موسى علي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:

دراسة الخصائص الفيزيائية والكيميائية لبوليمر جديد مطعم بالايثر التاجي الحاوي على ذرة كبريت == Physco - Chemical Study Of New Grafting Polymer By Thia Crown Ether

Author name: عماد سلام عبود شلاكة
Supervisor name: عامر موسى جودة الشمري | كريم جابر صباح
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: Arabic
University location: Najaf
First pages:

امتزاز صبغة الانلين الزرقاء من المحاليل المائية على سطح بوليمير معدل == Adsorption of Aniline blue dye from aqueous solution on to modified polymer surface

Author name: اصيل مجيد حميد العامري
Supervisor name: سامي وحيد راضي الحسناوي | عامر موسى جود
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: Arabic
University location: Najaf
First pages:

دراسة تاثير التعويضات في صبغات الازور عمليا ونظريا على معدل سرعة ازالة اللون باستخدام نظام UV\ZnO == Experimental And Theoretical Study The Effect Of Substitution In Azure Dyes On The Rate Of Decolorization By ZnO/UV System

Author name: احمد نعمة ثامر الياسري
Supervisor name: عامر موسى جودة الشمري
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:

تحضير وتشخيص بعض المشتقات الجديدة للسلفادايازين == Synthesis And Identificationof Some New Sulphadiazine Derivatives

Author name: مصطفى كاظم نعيم
Supervisor name: عزت حسين زمام العوادي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:

التقدير الطيفي للكليوكوينول والثايمول بوساطة الازوتة الاقترانية بوجود منشطات السطوح == Spectrophotometric determination of Clioquinol and Thymol by Coupling diazotization in the Presence of Surfactants

Author name: زهراء لطيف رزاق
Supervisor name: حسين جاسم محمد
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: Arabic
University location: Najaf
First pages:

تحضير وتشخيص بعض المشتقات الجديدة للبنزوترايزول == Synthesis And Identification Of Some New Benzotriazole Derivatives

Author name: حيدر مصطفى كمال الموسوي
Supervisor name: عزت حسين زمام العوادي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:

تحضيروتشخيص بعض مشتقات3,1 - الاوكسازبين و3,1 - الدايازبين الجديدة == Synthesis And Identification Of Some New 1,3 - Oxazepine And 1,3 - Diazepine Derivatives

Author name: رؤى وسام ادم الشبلاوي
Supervisor name: عزت حسين زمام العوادي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:

تحضيروتشخيص بعض مماثلات النيوكليوسيد الجديدة لـ (L - حامض الاسكوربيك) == Synthesis And Characterization Of Some New Nucleoside Analogues Of L - Ascorbic Acid

Author name: زياد كاظم عليوي
Supervisor name: ماجد جاري محمد
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:

تحضير وتشخيص ودراسة تحليلية وثرموديناميكية لمعقدات ايونات Ag(I), Cu(II), Ni(II) مع ليكاند ازو - قاعد شف جديد == Preparation , Characterization and Analytical , Thermodynamic Study of Complexes of Ni(II) , Cu(II) , Ag(I) Ions with Azo - Schiff base Ligand

Author name: ايمان حسن صاحب
Supervisor name: سامي وحيد راضي الحسناوي | عبد الله محمد علي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: Arabic
University location: Najaf
First pages:

تحضير ودراسة الفعالية الحيوية لبعض المشتقات الجديدة للفثاليمايد == Synthesis And Study Biological Activity Of Some New Phthalimide Derivatives

Author name: اسعد هاشم عنيد
Supervisor name: ناجي موسى علي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:

دراسة حركية وثرموديناميكية امتزاز صبغة البرلنت الازرق على قشور نباتية == Kinetic And Thermodynamic Study Of The Adsorption Of Brilliant Blue Onto Peel Of Plant.

Author name: حيدر احمد شهيد
Supervisor name: مثنى صالح مشكور | عامر موسى جودة
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:

Synthesis, Characterization And Study Some Physical Properties Of New Benzotriazole Derivatives

Author name: احمد وحيد راضي الحسناوي
Supervisor name: عزت حسين زمام العوادي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:

تحضير وتقييم الفعالية ضد البكتريا لبعض المركبات الحلقية الغير متجانسة الجديدة من الفيرونال == Synthesis And Evaluation Of Antibacterial Activity Of Some Novel Heterocyclic Derivatives Of Veronal

Author name: علي جبار راضي الذبحاوي
Supervisor name: عزت حسين زمام العوادي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:

تحضير وتشخيص ودراسة بعض الخواص الحرارية لبعض مشتقات البنزدين الجديده == Synthesis, Characterization And Study Thermal Properties Of Some New Benzidine Derivatives

Author name: حذام محمود يوسف اللبان
Supervisor name: عزت حسين زمام العوادي
General topic: Chemistry
Specific topic: Chemistry
Degree: Master
Language: English
University location: Najaf
First pages:
1 2 3