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دراسة ازالة بعض المركبات الفينولية والحوامض العضوية من محاليلها المائية على سطح البوليمر ثلاثي ايثانول امين كليسيرايل ماليت == REMOVABLE STUDY OF SOME PHENOLS AND ACIDS COMPOUNDS FROM AQUEOUS SOLUTIONS BY (TRIETHANOLAMINE - GLYCERYLMALEATE) POLYMER SURFACE

اسم المؤلف: محمد حسين علي
الموضوع العام: علوم الكيمياء
السنة: 2010
الموضوع الدقيق: الكيمياء
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: Triethanolamine - glycerylmaleate polymer was prepared, and identified by FTIR spectroscopy then swelling tests were performed for this polymer in different solvents.The adsorption processes of the some phenols and acids compounds : ph, na, nal, B, AB and DAB in aqueous solutions on the surface of this polymer were investigated by the use of UV - visible spectrophotometer and also studied at different : temperatures, ionic strength, and pH.The results revealed that the adsorption for compound at temperature of 25 °C took : S - mode for all compounds according to Giles classification.1 - At temperature of 25 C the adsorbate amount arrange to the following order : ph < nal < na < B < AB < DAB2 - The adsorption for ph, na, nal, and B take the following order for ionic strength 0.1M NaCl > 0.0M NaCl >0.2M NaCl But for AB, and DAB take 0.0M NaCl > 0.1M NaCl >0.2M NaCl3 - Generally it was noticed that adsorption quantities is proportionally correlated with the pH studies.4 - The ΔH values for all adsorbate compounds were negative, while ΔS values were negative for all compounds except for ph and B.5 - In comparison with zeolite (5A) the prepared polymer posse’s higher ability to adsorb than zeolite especially for AB and DAB compounds.

علاقة الهرمونات الجنسية بصورة الدهون المصلية والاجهاد التاكسدي في عقم الرجال

اسم المؤلف: ذو الفقار غانم محمد المحنه
اسم المشرف: سلمان علي احمد
الموضوع العام: علوم الكيمياء
السنة: 2010
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:

تحضير بعض قواعد شف كمثبطات لانزيم اليوريز ودراسة تاثيرها على بكتيريا المتقلبات Proteus M == Preparation of some Schiff bases as Urease inhibitors and study their effect on Proteus mirabilis bacteria

اسم المؤلف: احمد حسين علي التميمي
الموضوع العام: علوم الكيمياء
السنة: 2010
الدرجة: ماجستير
اللغة: الانكليزية
مكان الجامعة: بغداد
الصفحات الاولى:
المستخلص: The current study involves preparation number of cysteine derivatives by the reaction of cysteine with different aromatic aldehydes forming the following Schiff bases : "2 - (4 - bromobenzylideneamino) - 3 - mercaptopropanoic acid, 2 - (4 - hydroxybenzylideneamino) - 3 - mercaptopropanoic acid, 2 - (4 - (dimethylamino)benzylideneamino) - 3 - mercaptopropanoic acid and 2 - (4 - chlorobenzylideneamino) - 3 - mercaptopropanoic acid".The new prepared derivatives were identified by using spectroscopy (FTIR) and measuring their melting points.The biological activities against Proteus mirabilis were estimated using well - diffusion method around the plate then the antibacterial activities were estimated.The effects of the prepared compounds on urease activity were studied. The results showed good effect in urease inhibition. All the prepared compounds showed competitive inhibition since the value Vmax was the same and Km increased.Finaly, Vmax, Ki, Km and i % values of the enzyme was calculated using line weaver Bruk equation.It is noticed from enzymatic and biological studies that Schiff bases compounds are strong inhibitors of the urease enzyme where the(2 - (4 - (dimethylamino)benzylideneamino) - - 3mercaptopropanoic acid ) inhibition force was (Ki=0.0043 M) which is the highest inhibition force comparing with the other prepared compounds.The percentage of inhibition (%i) was equal to (96.77%).