http://localhost:80/xmlui/handle/123456789/19271 Thu, 23 Apr 2026 00:17:25 GMT 2026-04-23T00:17:25Z http://localhost:80/xmlui/handle/123456789/19825 Title: A FACILE AND EFFICIENT APPROACH TO THE SYNTHESIS OF 2,6-DIACETYLPYRIDINE Authors: Guangyong, Xie; Haitao AI; Lu Lei; Dongfang Zhang Abstract: 2,6-Diacetylpyridine was synthesized via esterification by using pyridine-2,6-dicarboxylic acid as precursor and successive Claisen condensation promoted by sodium for the first time. Compared with traditional sodium ethylate promoted Claisen condensation, the yield of 2,6-diacetylpyridine was improved greatly, and the procedures were simpler and convenient. Thu, 20 Aug 2009 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/19825 2009-08-20T00:00:00Z http://localhost:80/xmlui/handle/123456789/19824 Title: Comparative Vapour Phase FTIR Studies and Vibrational Assignment of Cyclopentadienyl-manganese-tricarbonyl and Methylcyclopentadienyl-manganese-tricarbonyl Authors: Zahid Mahmood; Syeda Robina, Gillani Abstract: The FTIR spectra in solution and vapour phase of the compounds, cyclopentadienyl manganese tricarbonyl (η-C₅H₅)Mn(CO)₃and methylcyclopentatadieny l manganese tricarbonyl (η-C₅H₄CH₃)Mn(CO)₃ were measured in the region 4000-400 cm⁻¹. An Assignment is offered in which the normal modes are described in term of "Local symmetry". This assignment has been discussed in terms of previous assignment given for (in Liquid phase and nujoll mull) other η-cyclopentadienyl and related compounds including ferrocene, dimethyl ferrocene, benzenechromium ticarbonyl and toulene chromium tricarbonyl. Thu, 20 Aug 2009 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/19824 2009-08-20T00:00:00Z http://localhost:80/xmlui/handle/123456789/19726 Title: Sewage Water Pollutants Removal Efficiency Correlates to the Concentration Gradient of Amendments Authors: Zulfiqar Ahmad, Bhatti; Qaisar Mahmood; Iftikhar Ahmad, Raja Abstract: Three coagulants viz. alum, FeClG₃, and Moringa oleifera seed extract were compared for treating municipal wastewater. The wastewater samples were collected from a drain near the Murree Road in Abbottabad city. The initial treatment depicted that alum was a suitable coagulant, while the other two caused color development and increased chemical oxygen demand in the effulent. Subsquently, wastewater samples were treated with graded concentrations (4-32 mg.L-¹) of alum in batch series, and shacked at 600-620 rpm for five minutes. The treated samples were analyzed for various water quality parameters to examine the effective coagulation and flocculation process in the wastewater. There was an increase in TDS and electrical conductivity with the increasing levels of alum above the optimized values (22 to 30 Mg L-¹). The proposed primary treatment strategy of wastewater treatment with alum is suitable for reducing the pollutants load in the sewer system. Thu, 20 Aug 2009 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/19726 2009-08-20T00:00:00Z http://localhost:80/xmlui/handle/123456789/19670 Title: The Role of Fungi as Aeroallergens in Asthma and Allergies Authors: MUHAMMAD ANWAR, WAQAR; TASNEEM AKHTER; ASMA WAQAR; SOHAIL SHAUKAT; MUNEEBA KHAN Abstract: Allergies and asthma are worldwide diseases causing various health problems. Their symptoms include episodic wheeziness, breathlessness, dry cough, etc. Sensitivity to a variety of fungi is known to be a major factor in the occurrence of allergic rhinitis and asthma. Fungal spores act as a potent indoor as well as outdoor allergens. The quantity and diversity of the fungi vary from location to location depending upon the environmental factors. Apart from fungal allergens, a range of other variables also contribute in the prevalence of allergic rhinitis and bronchial asthma, including proportion of native community and chemical irritants from air. This article sheds light on the correlation of various airborne fungal spores to asthma and associated allergies. Thu, 20 Aug 2009 00:00:00 GMT http://localhost:80/xmlui/handle/123456789/19670 2009-08-20T00:00:00Z