http://localhost:80/xmlui/handle/123456789/19280 2026-04-06T20:41:11Z 2026-04-06T20:41:11Z QIN WANG AND WEN PEI http://localhost:80/xmlui/handle/123456789/19818 2023-10-09T08:08:08Z 2010-12-20T00:00:00Z

Title: IONIC LIQUID CATALYZED SYNTHESIS OF 3,4-DIHYDROPYRIMIDIN-2(1H)-ONES UNDER MICROWAVE IRRADIATION Authors: QIN WANG; AND WEN PEI Abstract: An effective synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives using ionic liquid 1-n-butyl-3-methylimmidazolium hexafluorophosphate ([bmim]PF₆) as the catalyst from aldehydes, 1,3-dicarbonyl compounds and urea (thiourea) under microwave irradiation is described. This new method has the advantage of high yields (80-95% for aromatic aldehydes) and short reaction time (3-5 min).

2010-12-20T00:00:00Z FAZAL MABOOD MOHAMMAD RASUL JAN JASMIN SHAH FARAH JABEEN SULTAN ALAM MOHAMMAD SADIQ JAVID HUSSAIN ZAHID HUSSAIN http://localhost:80/xmlui/handle/123456789/19817 2023-10-09T08:04:53Z 2010-12-11T00:00:00Z

Title: Catalytic Conversion of Waste Inner Tube Rubber (Isobutylene Isoprene) into Valuable Products Authors: FAZAL MABOOD; MOHAMMAD RASUL JAN; JASMIN SHAH; FARAH JABEEN; SULTAN ALAM; MOHAMMAD SADIQ; JAVID HUSSAIN; ZAHID HUSSAIN Abstract: Waste inner tube rubber (isobutylene isoprene) represents a source of energy and valuable chemical products. Waste inner tube rubbers were pyrolysed catalytically in a batch reactor under atmospheric pressure. Calcium carbide was used as a catalyst to explore its effect on pyrolysis product distribution. The effect of temperature, amount of catalyst and time on the yield of the pyrolysed products was investigated. The effect of catalyst on the liquid yield was also studied. The results demonstrate that the temperature has a promising effect on the yield; however high temperature, as well as high catalyst loading, caused a decline in liquid yield. In order to check possibility of further cracking of the liquid product it was refluxed with the same catalyst for 2 hours. For characterization of Viscosity, Kinematic Viscosity, Aniline Point, Flash point, Watson Characterization Constant, Freezing Point, Diesel Index, Refractive Index and ASTM distillation were applied according to IP and ASTM standard methods for fuel values. From the physical tests it was observed that the results for the liquid fractions are comparable with the standard results of physical tests for gasoline, kerosene and light oil. Phenols and carbonyls were quantitatively determined by spectrophotometric methods using folin-denis and phenyl hydrazine reagents respectively. The different hydrocarbons were separated by using column chromatography and fractional distillation.

2010-12-11T00:00:00Z TAHSEEN GHOUS NOSHEEN AZIZ ALMAS ABID AAMIR RASHEED MAZHAR IQBAL http://localhost:80/xmlui/handle/123456789/19784 2023-10-05T03:05:50Z 2010-12-20T00:00:00Z

Title: On-Line Inhibition Study of Immobilised Acetylcholinesterase by Aqueous Extracts of Momordica charantia (Bitter Melon) Authors: TAHSEEN GHOUS; NOSHEEN AZIZ; ALMAS ABID; AAMIR RASHEED; MAZHAR IQBAL Abstract: Momordica charantia (MC) also known as bitter melon is commonly used as a folk medicine in most parts of South Asia. The role of MC in diabetes is of great importance because it lowers blood sugar and delays diabetic complications. Anti-diabetic activity of MC is relatively well known, literature for its anti-acetylcholinesterase (anti-AChE) activity is rarely available which has provided us a scope to explore its anti-AChE activity. In this study, we have used flow injection (FI) technique with immobilized enzyme column for AChE inhibition study by four different aqueous extracts. Results show that untreated pulp extract (MCPu) with [IC₅₀ = 7.2 mg/mL] acquires stronger anti-AChE activity whereas, MCPt (treated pulp extract) and MCFu (untreated flesh extract) showed almost similar action against AChE activity [IC₅₀ =14 and 15 mg/mL, respectively] while MCFt (treated flesh extract) showed weaker action against AChE activity [IC₅₀ =26 mg/mL].

2010-12-20T00:00:00Z MUSTAFA YONTEM GORKEM UMUT http://localhost:80/xmlui/handle/123456789/19783 2023-10-05T02:54:27Z 2010-12-20T00:00:00Z

Title: Comparison of Human Serum Neopterine and CRP Levels Authors: MUSTAFA YONTEM; GORKEM UMUT Abstract: Neopterine (NP), low weight molecule of 2-amino-4-hydroxy, is pterin. NP is a catabolic product of guanosine triphosphate (GTP) that is apurine nucleotide. It also is synthesized by macrophages. These cells are the most influential stimulants of NP production. The objective of this study is to investigate whether there is any correlation with the C - reactive protein (CRP) levels which has acute phase reactor of the NP levels having the presence of cell immunity. With the aim of this, NP and CRP levels are examined in the 150 serum species which were attained from Selcuk University Meram Clinical Medicine Faculty Biochemistry Laboratory and chosen. NP levels are examined by using fluorescent detector in the High Pressure Liquid Chromatography (HPLC) device and the CRP levels are examined with the method of immunoturbidimetric. By considering various CRP levels, samples (0-5, 5-9, 10-29, 30-59, 60 and up mg / l) were analyzed by grouping. When all of the results of the samples are evaluated, meaningful positive correlations has been detected between the NP and CRP levels. A distinct level of this correlation has been observed to be different in CRP groups and the highest point of NP level has been the 30-59 mg / l group in CRP. In the light of the results of this study, it has been observed that the levels of NP is generating in correlation with CRP levels but this correlation has been different than other CRP groups and it can’t be applied to all groups.

2010-12-20T00:00:00Z