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نتائج البحث: 14 من أصل 14

Synthesis, Characterization and study of some Copolymers by using different Surfactants

اسم المؤلف: Hani Taha Chayed
اسم المشرف: Mahmuod Shaker Hussain
الموضوع العام: علوم الكيمياء
السنة: 2015
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: البصرة
الصفحات الاولى:

تقدير مستويات بعض العناصر النزرة وانزيم الكلوتاثيون بيروكسيديز في دم مرضى حصاة الكلى في محافظة البصرة - العراق Estimation Levels of Some Trace Elements and Glutathion Peroxidase in The Blood of Patients Infected Kidney Stones in Basrah Governorate - iraq

اسم المؤلف: نور حامد فيصل
اسم المشرف: بيداء حسين علي العزاوي
الموضوع العام: علوم الكيمياء
السنة: 2015
الموضوع الدقيق: الكيمياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: البصرة
الصفحات الاولى:
المستخلص: The current study aimed to find relationship between some of biochemical variables with kidney stone patients and study the effectiveness of antioxidants (Zinc Zn,Selenium Se,Glutathion peroxidase GPx) and Calcium Ca ,Magnesium Mg and Cupper Cu. The samples were collected from Lithotripsy center in Basrah General Hospital and samples were selected from 104 patients with stones (55male and 49 female) their age ranged between (12 - 67) and 70 healthy people (40 male and 30 female) their age ranged between (17 - 65).The result were : 1 - Highly significant decreasing in patients in the level of zinc (p˂0.01) compared with healthy people. 2 - Significant decreasing or increasing was observed in level of Cu in patients compared with healthy people.3 - Highly significant in patients in the level of calcium p˂0.01 compared with healthy people.4 - Highly significant decreased in level of Mg p˂0.01 in patient compared with healthy.5 - highly significant decrease was observed in Se in patients compared with healthy people p˂0.01 6 - highly significant decrease was observed in GPx in patients compared with healthy people p˂0.01 7 - Presence positive correlation between antioxidants (Zn,Se and GPx) and negative correlation between (Zn,Cu) and negative correlation between (Ca,Mg).

تحضير بعض صبغات الازو المشتقة من البروكائين ودراسة امتزازها بالكاربون المنشط المحضر من نوى النبق المحلي Synthesis of some azo dyes derived from Procaine and study the adsorption of these dyes by activated carbon prepared from local Z.spina - christi fruits pits

اسم المؤلف: عبد الله عبد اللطيف عبد الله الخلف
اسم المشرف: طارق زباري جاسم
الموضوع العام: علوم الكيمياء
السنة: 2015
الموضوع الدقيق: الكيمياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: البصرة
الصفحات الاولى:
المستخلص: Activated carbon was prepared from Ziziphus Spina - Chisti fruit pits, which is locally available in Iraq, the purpose of this study is to search for surface that are highly applicable for dye adsorption to treat the pollution of aqueous solution in nature.Four azo dyes were synthesized in our laboratory from the reaction of Prodain Hydrochloride with Cromotropic acid, Pyridoxal Hydrochloride, Pyridoxine and 4 - Amino - 5 - hydroxy naphthalene - 2,7 - disalphonic acid via diazonium ions. UV - Visible and FT - IR spectra, characterized these dyes (D1, D2, D3 and D4).The different variable affecting the adsorption capacity of the activated carbon prepared such as contact time, initial dye concentration in feed solution, pH of the medium, weight of adsorbent and temperature were investigated on a batch process mode.Spectroscopic technique was used for the measurement of dyes before and after adsorption. The optimum contact time to attain equilibrium is (6)hr, the maximum percentage removal for D1&D4 occurred at pH 4 while D2 at pH 11 and D3 at pH 6.1. Ar =II The experimental data of adsorption were fitted to two different isotherms, namely Langmuir and Freundlich these isotherms equation were applied at different temperatures. The results obtained showed that the Freundlich isotherm equation is better fitted to the experimental data than the Langmuir isotherm equation. The adsorption kinetic was found to follow the pseudo second order kinetic expression

تحضير وتشخيص ودراسة تحليلية - طيفية لبعض اصباغ السلفا الجديدة Synthesis, Characterization and Analytical - Spectral Study of some New Sulfa Dyes

اسم المؤلف: رجاء حسین فیاض
اسم المشرف: اسعد عبود علي فاطمة مھدي الجابري
الموضوع العام: علوم الكيمياء
السنة: 2015
الموضوع الدقيق: الكيمياء
الدرجة: دكتوراه
اللغة: العربية
مكان الجامعة: البصرة
الصفحات الاولى:
المستخلص: Including preparation of six new symmetrical azodyes of selfa compounds ( sulfaguanidine , sulfanilamide and sulfadiazine , A1 - A3 respectively ) and ( mercuration of sulfaguanidine , sulfadiazine and sulfanilamide , B1 - B3 respectively ) by oxidative - coupling reaction of sulfa compounds and their mercuration with oxidizing agent ( 1,2 - nephthaquinone - 4 - methoxy ) . The color of prepared azodyes were orange to orange - redish with melting points ranges ( 275 - 312 oC ). The azodyes were characterized by C H N , FT - IR , H NMR and TG analysis. The electronic spectra of azodyes were showed max. wavelength range ( 440 - 460 nm. ).The acid - base properties were studied at pH values in the range of ( 0.7 - 12 ), the electronic spectra of azodyes were scanned at wavelength range of ( 350 - 600 nm. ) . The isopestic point of each dye were fixed and the protonation and ionization constants were determined by half - height method. The effect of solvents of different polarities on the azodyes spectra was also studied . From that spectra it was found that most of solvents no effect except for polar solvent like DMF ,which showed a light red shift ( that may be for the hydrogen bonding between dye and solvent ) . From the relation of max. wavelength and dielectric parameter of each dye , it was found that linearity or slightly deviation of linearity in case of polar solvent . That means the major effect is dielectric constant of the solvent The second subpart : The ability of using all prepared azodyes as acid - base indicators ( strong acid with strong base and weak acid with strong base ). The results were compared with that obtained from the recommended method . It was found that no significant observed between the two methods by using of relative error .The last subpart : Including complex formation between two of studied azodyes ( A1 & A3 ) with Ni2+ by forming 1 : 2 ( M : L ) complexes by aid of molar ratio method.The optimum conditions were studied which including ( the effects of , time , pH , sequence of addition and interferences ). The spectra of two complexes showed a red shift from their azodyes . The obeyness of Beer's law , molar absorbtivity coefficient , sandel resistivity , relative error , relation coefficient and detection limit were all determined . The effect of foreign ions with concentrations of ( 1 - fold , 5 - fold and 10 - fold ) on the absorbance of the complexes was also studied . The overall stability constants ( β1 & β2 ) of Niazodyes complexes were determined by using corresponding solutions method which including half - height method . The complexes were also characterized by C H N and FT - IR .Part two : Including simple , easy and sensitive spectrophotometric method for the microdetermination of sulfa and mercurated salfa compounds in aqueous solution and pharmaceutical compounds .This method depends on the oxidative - coupling between the reagent hydroxyl nephthaline - 4 - sulphonic acid in strong acid medium by forming colored imine - quinone dyes in max. wavelength ran ( 480 - 510 nm.). The optimum conditions which including ( volume of reagent , volume and kind of the oxidizing agent , volume and kind of the acid , sequence of additions , time effect and temperature effect ) . The electronic spectra of the dyes were carried on in the range of ( 350 - 600 nm.).This method was applied pharmaceutical compounds ( Tablets and Creams ) that containing sulfadiazine .It was found there are no significant difference between results of this method and the composition of the sulfa drugs , that observed from calculated relative rror.By the aid of C.H.N. , FT - IR and stoichiometry ( molar ratio method ) of forming the complexes, the chemical structure of the complexes Ni2+ and A1 & A3 dyes were suggested .

دراسة التاثير المخفض - المضاد لفرط سكرالدم للمركبات الكيميائية الفعالة المعزولة من النبات الطبي العراقي شوك البحر Study of Hypoglycemic Antihyperglycemic Action of Active Chemical Compounds Isolated from Iraqi Prosopis juliflora Medicinal Plant

اسم المؤلف: جمال حربي حسين السعدي
اسم المشرف: عباس دواس مطر المالكي
الموضوع العام: علوم الكيمياء
السنة: 2015
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: البصرة
الصفحات الاولى:
المستخلص: Diabetes mellitus is a disorder in glucose sugar metabolism process becauseof different reasons.leading to a great damage in body systems , therefore medicinalplants were used successfully to treat this disease .The current study was carried outIraqi prosopis juliflora to determine and investigate its hypoglycemic action in bloodof normalglycemic and alloxan induced hypoglycemic rabbits. Many generalextracts were prepared from Iraqi prosopis juliflora pod and leaves ,they are hotaqueous ,cold aqueous ,hot alcoholic ,cold alcoholic ,oils, ethyl acetate and dichloromethane extract .Moreover , some chemical families were isolated from this plantsuch as phenols ,glycosides , flavonoids , tannins ,alkaloids and saponnins.Preliminary qualitative tests were carried out for all prepared extracts thenhypoglycemic and fasted alloxan - induced hyperglycemic rabbits to know activitythese extracts in decreasing blood glucose levels in these rabbits . the resultsindicated that all extracts showed good decreasing in glucose level. Oil extractisolated from prosopis juliflora leaves showed very high activity to decrease blood glucose ,levels in normalglycemic and hyperglycemic rabbits ,where significant decreasing (P<0.05) was found at second and forth hrs , significant decreasing (P<0.01) at sixth hr. and high significant decreasing (P<0.001) at twenty forth hrs. ,whereas leaves glycosides has a great ability to decrease glucose levels in normalglycemic rabbits where a significant decreasing (P<0.01) was found at second and forth hrs., and a high significant decreasing (P<0.001) at twenty forth hrs., but in hyperglycemic abbits , a high activity was recorded and led to a significant decreasing ( P<0.01) at second forth hrs., and high significant lowering( P<0.001 ) at twenty forth .whereas ,leaves tannins extract was noticed to be the lowest affiecieney in reducing blood glucose levels ere it led to a significant lowering ( P<0.01) at twenty forth in normalglycemic rabbits , while a significant decreasing (P<0.05) was recorded at twenty forth in hyperglycaemic rabbits. Leaves ,4 - (2’ - Hydroxyethyl)phenol, Trans - phytol , 24 - Methylencycloartan - 3 - one β - hydroxylup - 20(29) - en 4 - (β - D - Glucopyranosyloxy)benzyl alcohol and Sti masterin (.Were isolated ,separated ,purified and identified by thin layer chromatography, column chromatography, gas chromatography, IR - spectroscopy ,1H,C13 - NMR ,Gas chromatography - mass spectroscopy .Also study of hypoglycemic action of four these chemical compounds isolated from leaves and pods p.juliflora , the glycosidic compound 4 - (β - D - Glucopyranosyloxy)benzyl alcohol recorded strong activity as hyperglycemic action and led to a significant decreasing ( P<0.05) at second hrs., and significant lowering( P<0.01)at fourth ,sixth hrs. and high significant decline (P<0.001) at 24 hrs in normalglycemic rabbits ,while in hyperglycemic rabbits a significant decreasing (P<0.05) at second hrs. ,significant lowering P<0.01 at fourth and sixth hrs and significant decreasing (P<0.001) at twenty forth hrs. The active compound 4 - (2 - - Hydroxyethyl)phenol showed a high hypoglycemic action were significant decline ( P<0.05) at second hrs, a significant decreasing ( P<0.01) at sixth and a high significant decreasing (P<0.001) at twenty forth hrs. in normalglycaemic rabbits ,while in hyperglycemic rabbits , a significant decline (P<0.05) was at second , a significant decreasing (P<0.01) at fourth and sixth hrs., and a high significant decreasing ( P<0.001) was recorded at twenty forth hrs..Also active compound24 - Methylencycloartan - 3 - one showed a significant decrease (P<0.05) at second hrs. , significant decrease (P<0.01) at fourth and sixth hrs., and a high significant decreasing ( P<0.001) at twenty forth hrs hyperglycaemic rabbits, while the compound α - tocopherol recorded a significant decreasing (P<0.05) at sixth hrs. , significant decrease (P<0.01) at twenty forth hrs. in hyperglycemic rabbits. The toxicity for some extracts and active chemical compounds isolated from leaves and pods was studied where no hemolytic for red blood cells was found .

دراسة حيوية لمستخلص اوراق نبات الدودنيا ضد مرض سرطان الثدي البشري Biochemical Study of Dodonaea viscosa (L.) Jacq. Extracts on the Anti - Human Breast cancer

اسم المؤلف: غزوان ذياب موسى العمري
اسم المشرف: علي عبد الواحد عبد الحسين الشاوي
الموضوع العام: علوم الكيمياء
السنة: 2015
الموضوع الدقيق: الكيمياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: البصرة
الصفحات الاولى:

تحضير ايمايدات حلقية ثنائية وبعض مشتقاتها الكبريتية ودراسة خواصها الطيفية والتركيبية , عمليا ونظريا باستخدام نظرية دالية الكثافة IR, NMR, MS Spectra and Structure of Some prepared Bicyclic Imides and Their Thione Derivatives; Experimental and Density Functional Theory studies

اسم المؤلف: عادل امعلا ضمد ال ازيرج
اسم المشرف: ناجي علي عبود
الموضوع العام: علوم الكيمياء
السنة: 2015
الموضوع الدقيق: الكيمياء
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: البصرة
الصفحات الاولى:
المستخلص: The present work involved four parts : First step concerned with the preparation some N, N’ - alkyl (aryl) bismaleimic acidsvia reaction of twice molar amounts of maleic anhydride and hydrazine for compound(A1), and different alkyl and aryl - diamines for compounds A2 - A7. The reaction wascarried out via nucleophilic attack of amino group in maleic anhydride. The structureof the compound (2Z,2Z’) - 4,4’ - (ethane - 1,2 - diylbis (azanediyl)) bis (4 - oxobut - 2 - enoicacid) (A2) was also unambiguously confirmed by X - ray single crystal structureanalysis. The white crystal crystallizes in the monoclinic system, space group C2/cwith the cell dimensions a =7.108(3), b=7.370(2), c= 20.859(6) Å, β = 91.260(4)oand Volume = 1092.65(6) Å3.Molecule is stabilized by an intramolecular O—H…O hydrogen bond. In thecrystal, molecules are connected through intermolecular N—H…O hydrogen bonds.Intermolecular and intramolecular hydrogen bonds coexist to stabilize the structure.The geometry calculated of compounds A1 - A7 was optimized using a Densityfunctional theory DFT with B3LYP hybrid functional and 6 - 311G (d, p) basis set, andis in good agreement with the structure obtained by the X - ray single crystal structureof compound A2. Also the fundamental vibrational frequencies of vibrational bandswere evaluated.The second part of this study was the treatment of N,N - alkyl and (aryl)bismaleimic acid (A1 - A7) with suitable dehydrating agents lead to dehydration andcyclization producing the corresponding N,N - alkyl and (aryl) bismaleimide (AD1 - AD7).The structure of the compound 1,1’ - (sulfonylbis(4,1 - phenylene)) bis (1H - pyrrole - 2,5 - dithione) (AD7) was also unambiguously confirmed by X - ray single crystalstructure analysis. The colorless crystal crystallizes in the monoclinic system, spaceAbstractix0200040000CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2CH2phenyl4,4' - sulfonyldianilinedirect Aliphatic AromaticWavenumber cm¯¹Types of RCH str.CH2 - N strC=O strC - Ngroup P21/c with the cell dimension a =11.698(3), b=15.002(3), c= 20.053(6)Å andβ = 98.818(2)o Volume = 3478.07(13) Å3.FT - IR spectra show the position of the absorption bands vary with the type andlength of the link spacer (R) between the two maleimide rings on the compoundsAD1 - AD7.The absorption frequency of vinyl group increases with increasing methylene aliphatic chain spacer link between two maleimides ring, the correlation between some absorption bands and the type (direct link or aliphatic or aromatic) and length of aliphatic chain link spacer (R) between the two maleimide rings in the studied compounds AD1 - AD7 shown in the chart below.In the third part, a series of new bisthimalemide derivatives were prepared by thionation the compounds AD3, AD6 and AD7 with Lawesson’s reagent LR. Subsequent reaction of bismaleimimides AD3, AD6 and AD7 with Lawesson’s reagent afforded dithio derivatives.

دراسة الاطلاق المسيطر عليه لعقار الاندوميثاسين من مركبات الاباتيت المحضرة المحتوية على عنصري الكالسيوم والسترونتيوم Studying Of The Controlled Relaesinng of Indomethacin Drug From Prepared Apatite Compounds Containing Elemantal Calcium And Strontium

اسم المؤلف: رؤى حسين ناصر
اسم المشرف: عبد الامير حسين تعوبي زكي ناصر كاظم
الموضوع العام: علوم الكيمياء
السنة: 2015
الموضوع الدقيق: الكيمياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: البصرة
الصفحات الاولى:
المستخلص: This work contains two parts, the first parts includes the preparation of different compounds of apatite and determine the ratios of strontium and calcium and phosphate in the compounds and the second part included the study of release of indomethacin drug from prepared compounds.Different compounds of apatite were prepared and identified such as a compound of calcium hydroxyapatite (Ca10 (PO4)6 (OH)2) which is prepared in three different methods .Hydroxyapatite Strontium compound (Sr10(PO4)6 (OH)2) and Strontium Fluorapatite compound (Sr10(PO4)6F2 ) and composite calcium Fluorapatite compound ( Ca10 (PO4) 6F2) and Strontium - Calcium hydroxyapatite compound ( Ca5Sr5(PO4)6(OH)2 ).All these compounds were identified by Infrared spectroscopy and X - rays, which confirmed the presence of the prepared compounds.Quantitative analysis of the percentage of calcium and strontium in the prepared compounds was conducted using flame atomic absorption spectroscopy. Also the amount of phosphate and then phosphorus was determined by UV - Vis. spectroscopy ( Phosphomolybedenum blue method.) The results showed that the concentrations of the elements mentioned above in the prepared compounds are within the acceptable range for its role in a property biological effectiveness for compounds.The other part has been singled out for studying the release of a indomethacin drug in a laboratory in the prepared compounds and which is used as an anti - inflammatory and analgesic for pain osteoporosis.Porosity tablets of the compounds loading with drug indomethacin for 24 hours and then studied the release of drug from tablets for 48 hours using visible spectroscopy UV function when acidic pH = 7.4 and a temperature of 37 ⁰ m. As the results showed that the release of indomethacin taking a different time for different times of the compounds that arrived at the level at which the release settled between (4 - 8) hours.

تحضير وتشخيص بعض المعقدات التناسقية لصبغات الازو المشتقة من الباراسيتامول ومركبات السلفا ودراسة فعاليتها ضد البكتريا Synthesis And Characterization Of Some Metal Complexes For Azo Dyes Derived From Paracetamole And Sulpha Compound And Study Of Their Antibacterial Activity

اسم المؤلف: رواء هشام يعقوب
اسم المشرف: طارق علي فهد
الموضوع العام: علوم الكيمياء
السنة: 2015
الموضوع الدقيق: الكيمياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: البصرة
الصفحات الاولى:
المستخلص: In this study, four ligands were synthesized from prepared by the coupling of 4 - acetamidophenol with some sulfa drugs (sulfadiazine Ld , sulfaguinidine, Lg ,sulfamethazine Lm and sulfapyredine Lp) with parasetamol .These ligands were characterized by elemental analysis, FT - IR. , UV - visible ,1H - NMR , 13C - NMR and mass spectroscopy. The chemical structure of these ligands are suggested as following : Lp={N - (4 - hydroxy - 3 - ((4 - (N - pyridin - 4 - ylsulfamoyl)phenyl)diazenyl)phenyl)acetamide} Ld=N - (4 - hydroxy - 3 - ((4 - (N - pyrimidin - 2 - )ylsulfamoyl)phenyl)diazenyl)phenyl)acetamide) Lg=N - (3 - ((4 - (N - carbamimidoylsulfamoyl)phenyl)diazenyl) - 4 - hydroxyphenyl)acetamideLm={N - (3 - ((4 - (N - (4,6 - dimethylpyrimidin - 2 - yl)sulfamoyl)phenyl)diazenyl) - 4 - hydroxyphenyl)acetamide} The ionization constant of the ligands were determined potentiometrically using the Irving - Rossotti technique at constant temperature 25 °C. The values of the average number of protons associated with the ligands nA at different pH values were calculated. The proton - ligand formation curves are obtained by plotting nA versus pH at constant temperature.Twelve complexes were prepared from above ligands with cobalt, nickel, and copper salts, with molar ratio 1 : 1 (M : L) . These complexes were identified by elemental analysis, FT - IR. spectra, Uv - visible spectra,atomic absorption,molar conductance and megnetice,susceptibility The results were lndicated that the found valaes of C,H,N for prepared complexes were clossed to their theoretical volues . IR Spectra showed that stretching vibration of azo group in the complexes were shifted in comparison with ligands inaddition to appearance of M - N and M - O stretching,UV - visible and magnetic studies gave in idea about geometry and coordination number of these complexes through location of electronic transition and number of unpaired electron in outer energy levels.Atomic absorption measurements explained that the reaction of the ligand with the metal complexes was 1 : 1 molar ratio ,also the perecentage of the metals in the prepared complexes was in good agreement with the theortical values.The molar conductance values of the coordination compounds of mentioned metal ions under investigation were determined using (1.0×10 - 3 mol. L - 1) DMF solvent, The molar conductance and magnetic values suggest the presence of a non - electrolyte.The magnetic moments of Ni(II), Cu(II), and Co(II), complexes were measured at room temperature .Based on the different characterization methods described above, the chemical structures of the prepared complexes were suggested as following.

دراسة الفولتامتري الحلقي والتخليق الكهروكيميائي والتوصيل الكهربائي لبعض مركبات التلوريوم العضوية CYCLIC VOLTAMMETRY, ELECTROCHEMICAL SYNTHESIS AND CONDUCTEMETRIC STUDIES OF SOME ORGANOTELLURIUM COMPOUNDS

اسم المؤلف: ديار محمد علي مراد
اسم المشرف: علي زايد الربيعي انيس عبد الوهاب النجار
الموضوع العام: علوم الكيمياء
السنة: 2015
الموضوع الدقيق: الكيمياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: البصرة
الصفحات الاولى:
المستخلص: تضمنت هذه الدراسة على جزئين ، فالجزء الاول يتعلق بدراسة السلوك الكهروكيميائي لمركبات ثنائي فنيل ثنائي التلوريد وبس(2 - امينو - 5 - مثيل فنيل ) ثنائي التلوريد وبس(2 - امينو - 5 - بروموفنيل )ثنائي التلوريد باستعمال تقنية المسح الجهدي الحلقي في مذيب رباعي هيدروفيوران وفي درجة حرارة الغرفة .بينت النتائج المستحصلة ان تلك المركبات تعاني انتقالا الكترونيا مفردا خلال عمليتين متعاقبتين اثناء عملية الاختزال .و استعملت تلك التقنية لتحديد مناطق الجهد المناسبة تمهيدا لاجراء التخليق الكهروكيميائي للتلوريدات العضوية غير المتجانسة : اثيل فنيل تلوريد ((1 ، بروبيل فنيل تلوريد ((2 ، بيوتيل فنيل تلوريد ((3، اثيل ( - 2 امينو - 5 - مثيل فنيل) تلوريد (4) ، بروبيل( - 2 امينو - 5 - مثيل فنيل) تلوريد (5) ، بيوتيل ( - 2 امينو - 5 - مثيل فنيل) تلوريد (6)، اثيل( - 2 امينو - 5 - برومو فنيل) تلوريد ((7، بروبيل ( - 2 امينو - 5 - برومو فنيل) تلوريد (8)، بيوتيل ( - 2 امينو - 5 - برومو فنيل) تلوريد (9). شخصت هذه التلوريدات العضوية غير المتجانسة بواسطة تحليل العناصر الدقيق واطياف تحت الحمراء . اما الجزء الثاني فقد تضمن قياس التوصيلية الكهربائية للمركبات : فنيل التلوريوم ثلاثي اليوديد و4 - ميثوكسي فنيل التلوريوم ثلاثي اليوديد و4 - كلوروفنيل التلوريوم ثلاثي اليوديد وفنيل التلوريوم ثلاثي البروميد وفنيل التلوريوم ثلاثي الكلوريد في مذيبي DMSO وDMFالنقيين وعند درجة حرارة 25 مo . اجريت التحاليل المتعلقة بنتائج التوصيلية الكهربائية بطريقة تقنية التقليل للحد الادنى باستعمال اربع معادلات نظرية للتوصيلية وهي معادلات Fuoss - Hsia (فوس - سايا) و) Pitts بتس) الموسعة والمحورة . اوضحت النتائج التحليلية لتلك المركبات بانها لا تتصرف كالكتروليتات قوية في كلا المذيبين وان تفككها ليس بالتفكك التام ، كما لوحظ وجود تفاوت في قيم التوصيلية الكهربائية وفقا˝ لطبيعة المجموعة المعوضة كونها دافعة او ساحبة وكانت حسب الترتيب الاتي : ومن ناحية اخرى قورنت قيم توصيلية المركب فنيل التلوريوم ثلاثي اليوديد مع المركبين فنيل التلوريوم ثلاثي البروميد وفنيل التلوريوم ثلاثي الكلوريد اذ كانت قيم التوصيلية الكهربائية وفق نمط الترتيب الاتي | The present study divided into two sections, firstly , the electrochemical behavior of diphenyl ditelluride ,bis(2 - amino - 5 - methyl phenyl)ditelluride and bis(2 - amino - 5 - bromo phenyl)ditellurid have been investigated by cyclic voltammatry in THF at room temperature. The results showed that all these compounds suffer of two single successive electron transfer through the reduction process. This technique was used to determine the best voltage regions in order to carry out the electrochemical synthesis of unsymmetrical organic telluride, i.e : ethyl phenyl telluride (1), propyl phenyl telluride (2), butyl phenyl telluride (3), ethyl (2 - amino - 5 - methyl phenyl)telluride (4), propyl(2 - amino - 5 - methylphenyl)telluride(5), butyl (2 - amino - 5 - methylphenyl) (6),ethyl(2 - amino - 5 bromophenyl)telluride(7), propyl(2 - amino - 5 - bromo phenyl) telluride(8) and butyl(2 - amino - 5 - bromophenyl) telluride(9). All mentioned compounds were characterized by CHN and IRspectroscopy. secondly, the electrical conductances of phenyl tellurium triiodide , 4 - methoxy phenyltellurium triiodide , 4 - chloro phenyltellurium triiodide , phenyltellurium tribromide and phenyltellurium trichloride have been measured in both DMSO and DMF solvents at temperature 25oC .The evaluation of conductance data was carried out by minimization technique using the theoretical conductance equations of the complete and modified forms of Pitts and Fuoss - Hsia . Analytical results showed that these compounds do not behave as strong electrolytes in both solvents , and that their dissociation are far from complete . The low conductances of these electrolytes may be attributed to the formation of ion - pairs. The presence of donating or withdrawing groups on benzen ring affect the electrical conductivity and the following trend was obtained : Finally ,the sequence of increasing the conductaces of the three studied phenyltellurium trihalides is given below :

تحضير ودراسة بايلوجية لبعض مركبات البايرزول Preparation and biological study of some pyrazole compounds

اسم المؤلف: خنساء صقر سعود
اسم المشرف: نزار لطيف شهاب الدين
الموضوع العام: علوم الكيمياء
السنة: 2015
الموضوع الدقيق: الكيمياء
الدرجة: ماجستير
اللغة: العربية
مكان الجامعة: البصرة
الصفحات الاولى:
المستخلص: The present study includes the preparation of some pyrazolines derivatives includes their characterization and their biological activity.Chapter one the introduction shows the literature survey and related important reactions for pyrazolines .While chapter two shows the details of the preparation for each types in details 36 pyrazoline product were prepared from 6 types of (cha/cones) Benzalacetophenones and six different hydrazine ( hydrazinehydrate , phenylhydrazine, semicarbazide, thiosemicarbazide 2,4 - dinitrophenylhydrazine and phenylthiosemocarbazide ).Chapter three shows all the results which proved the chemical structures of some selected compounds by using I.R, 1H - NMR, 13C - NMR, CHN, and mass. Spectroscopy we found abnormal case in pyrazoline derivatives especially in the ring once have - CH2 like in (P1and P10) and compounds (P8 and P13) does not have the methylene protons this exception was happened due to modification in procedure. Finally the biological activity for some selected compounds were used and compared with standard drugs and its shows moderately to good activity.

الجوانب الفيزيائية والكيميائية في الخليج العربي Physical and Chemical Oceanography of the Arabian Gulf

اسم المؤلف: مؤید حسن محمد البهادلي
اسم المشرف: علي عبد الزهرة دعيبل بهجت علي سعيد
الموضوع العام: علوم الكيمياء
السنة: 2015
الموضوع الدقيق: الكيمياء الفيزيائية
الدرجة: دكتوراه
اللغة: الانكليزية
مكان الجامعة: البصرة
الصفحات الاولى: