http://localhost:80/xmlui/handle/123456789/19264 2026-04-23T00:17:24Z http://localhost:80/xmlui/handle/123456789/19723 Title: A Simple Method for Isothermal Titration Calorimetric Data Analysis. Authors: A.A. SABOURY Abstract: A Simple method was introduced for isothermal titration calorimetric data analysis. This method was applied to the binding of monosaccharide methy1 α-D-mannopyranoside to concavalin A at pH 6.9 and temprature of 25°C. The disassociation binding constant (K) and the molar enthalpy of binding (ΔH) were 0.135 mM and -28.47 KJ/mol, respectively. These results were markedly consistent with the results obtained from previous method. 2000-09-20T00:00:00Z http://localhost:80/xmlui/handle/123456789/19722 Title: Potable Water Quality Characteristics of the Urban Areas of Peshawar (Pakistan) Part 1: Tubewell Water. Authors: AZIZ-UR-RAHMAN; A.R.KHAN Abstract: Potable Water quality of the urban areas of Peshawar was monitored for various physical and chemical parameters. The importance of this reference data, related to the water quality of Peshawar was felt after spreading of some water borne diseases, mainly diarrhea in one of the areas of Peshawar (Sufaid Dheri) during the summer 1999 in which a few people had died and several were hospitalized. Forty three water samples from different tube wells of the urban areas of Peshawar were analysed for pH,TDS, TSS, electrical conductivity, turbidity, total hardness, calcium magnesium, alkalinity, chloride, nitrate sodium and potassium. The concentration of these analytes were found in the ranges; pH (6.0-7.9), TDS (180.20-351.82 mg/l), TSS (1.05-4.21 mg/l), Electrical conductivity (200-390 mg/l), turbidity (0.3-2.1 NTU). total hardness (126.17-458.9 mg/l) calcium (21.81-90.90 mg/l), magnesium (12.50-80.72 mg/l), bicarbonates (132-244 mg/1) chloride(10.04-54.45 mg/1) ,sulphate(16.43-80.28 mg/1),nitrate (1.8-35.2 mg/l), sodium (7.9-74.6 mg/1), and potassium (1.6-6.2 mg/1), Mean Concentration values of the different analytes of Peshawar water were also found. Average values of pH (7.06+-0.45), TDS (284.57+-51.16 mg/1), TSS (2.27+-1.03 mg/1), Electrical conductivity (315.58+-57.28 mg/1), turbidity (0.73+-0.42 NTU, total hardness (306.23 +-70.64 mg/1) , calcium(61.61+-12.23mg/1), magnesium(36.03+-13.47mg/1),bicarbonates(187.84+-25.87mg/1),Chloride (31.41+-10.55 mg/1), sulphate (49.43+-16.15 mg/1), nitrate (19.21+-10.58 mg/1), sodium (28.92+-9.95 mg/1), and potassium (3.65+-1.17 mg/1), Alkalinity (due to hydrooxide and carbonate) and nitrates were found absent. All the analytes were found to be within the WHO possible limits. This paper concludes that, waters of all the tube wells of Peshawar (understudy) are safe for human consumption provided the supply lines and the storage tanks are prevented from being contaminated. A lowering trend in the pH of underground waters of Peshawar was seen, the reason of this was not found. The results presented in this paper also contradict the previous statement about the nitrate concentration in the tube well waters of Peshawar to have been decreasing. 2000-09-20T00:00:00Z http://localhost:80/xmlui/handle/123456789/19548 Title: Cholesterol Metabolism in Asterias Rubens Authors: A. SATTAR KHAN Abstract: [41-14C] choleslerol, (26J4C) cholesterol and (2-J4C) acetic acid were employed to study cholesterol metabolism in A. rubens,. With (4J4C) cholesterol highest radioactivity was found in free sterols (71 %) and steryl esters (24%) and smallest in glycendes and free fatty acids. Sterol sulphate were also heavily labelled. Fatty acid methyl esters prepared from glycerides and free fatty acids contained negligible radioactivity. Incorporation of (26J4C) cholesterol also resulted highest label in free sterols (7.5%) and steryl esters (19%). Saponification of steryl esters did not yield activity into fatty acid while sterols were labelled. Again sterol sulphales were labelled heavily. Incubation with (2J4C) acetic acid recorded highest activity in triglycerides (72%) and steryl esters (16%) while free sterol were significantly labelled (.5%). Moreover, situation of label in steryl esters and free sterols was opposite to that of (4J4C) cholesterol. Cholesterol catabolism did not produce labelled precursors or support re-utilization of carbon for lipid/cholesterol synthesis 2000-09-12T00:00:00Z http://localhost:80/xmlui/handle/123456789/19547 Title: Using of 4-(4"-Methylbenzylidene)-1-Hydroxy-2-(N-Phthalimidomethyl)-5- Imidazolone as A Building Block in Synthesis of Some Heterocyclic Authors: S.A. NASSAR Abstract: 4{4'·Mcthylbenzylidene)-1-hydroxy-2-(N-phthalimidomethyl)-5-imidazolone (2) is now newly synthesized. The interaction of 2 with aromatic amines, hydrazines, and aromatic: substrates under Friedel-Craft's, conditions were studied. Also the phthalyi group used as masking group in the preparation of hetertocyclic amines. 2000-09-11T00:00:00Z