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Vertically aligned ZnO nanorods based fabricated FET providing a well-defined large surface area for ammonium ion detection in solution.

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The kinetics of oxidative cracking of n‐hexane to olefins using lattice oxygen of VOx/Ce‐Al2O3 is investigated. The TPR/TPO analysis shows a consistent reducibility (79%) of VOx/Ce‐Al2O3 in repeated redox cycles. The total acidity of the sample is found to be 0.54 mmol/g with 22% are strong acid sites that favors olefin selectivity. The oxidative cracking of n‐hexane in a fluidized CREC Riser simulator gives approximately 60% olefin selectivity at 30% n‐hexane conversion. A kinetic model is developed considering (1) cracking, (2) oxidative dehydrogenation (ODH), and (3) catalyst deactivations. The proposed cracking mechanism considers adsorption, C–H and C–C bond fission and desorption as elementary steps and implemented by pseudo steady state hypothesis. A Langmuir‐Hinshelwood mechanism is found to represent the ODH reactions. The developed model fits the experimental data with favorable statistical indicators. The estimated specific reaction rate constants are also found to be consistent with the product selectivity data. © 2016 American Institute of Chemical Engineers AIChE J, 63: 130–138, 2017

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Libraries around the world are using the technology in best possible ways to satisfy their users through efficient and effective library services. The paper aims to discuss the process of KOHA implementation in Government College University (GCU) Libraries Lahore, while replacing the Library Management Software (LMS) implemented in 1999. The article discusses the implementation of Koha in a narrative style. In first phase KOHA was installed on testing basis on one computer and its different modules were evaluated as per their functions in context of the requirements of GCU Libraries. After satisfactory results a journal was placed formally for notes taking purpose during the step by step process of KOHA implementation for the required results. On the basis of testing phase, the technical issues were addressed and Koha implementation strategy was chalked out, employed and resulted as the live server of KOHA. The study discussed the major technical problems that were encountered in the implementation of KOHA. The authors assume that other libraries who are implementing Koha also face such problems. However, these technicalities are not disclosed and remain unaddressed. The study addresses these technical issues and offers solutions. The study offers insight that is valuable for Pakistani librarians at large and other libraries in general which are in the process of implementing Koha for automation.