NOPR Collection:

QoS Based Mobility Management for Wireless Mesh Networks

Sun, 01 Apr 2018 00:00:00 GMT

Title: QoS Based Mobility Management for Wireless Mesh Networks Authors: Rao, Y M; Subramanyam, M V; Prasad, K S Abstract: Radio resource is one among the prime resources in wireless networks which is expected to use in an efficient way especially when the mobile user is on move. This paper proposes QoS Based Mobility Management (QBMM) for Wireless Mesh Networks. It is aimed to decrease the overall network traffic due to the mobility of the users within the network while ensuring the QoS. To accomplish this, pointer forwarding mechanism with Expected Transmission Count as routing metric is used. The proposed algorithm is analyzed for signaling cost, data delivery cost and throughput for both Internet sessions and Intranet sessions. Significant throughput improvement is achieved while maintaining the overall communication cost at low. Page(s): 203-207

Kinetic Model for the Oxidative Degradation of Aqueous p-Nitrophenol by Fenton’s Reagent

Sun, 01 Apr 2018 00:00:00 GMT

Title: Kinetic Model for the Oxidative Degradation of Aqueous p-Nitrophenol by Fenton’s Reagent Authors: Ghime, D; Ghosh, P Abstract: This work investigates the oxidative degradation of p-Nitrophenol (PNP) pollutant in aqueous solution using an environmentally friendly advanced chemical oxidation (Fenton’s) process. Degradation experiments of PNP present in aqueous solutions in the concentration range between 3.597 x 10^-3 moles/L (500 ppm) and 7.188 x 10^-3 moles/L (1000 ppm) were carried out in a batch rector. This work describes a mechanistic study for the reaction kinetics between the PNP and hydroxyl (^•OH) radical. A model of mechanistic study was planned for degradation of an aqueous PNP in Fenton’s process and that model was used for the calculation of rate constant of the reaction showing the influence of hydroxyl radicals on PNP degradation. Around 96.80 % of degradation was achieved after 60 min of reaction time [700 ppm of PNP concentration, 0.1006 moles/L H₂O₂, 1.798 x 10^-3 moles/L of Fe²⁺ catalyst and pH 3]. Our main purpose was to determine the reaction rate constant between PNP and the hydroxyl radical. The reaction rate constant for the reaction of PNP removal with ^•OH radicals is estimated as 2.76 x 10¹⁰ L/mole-s. Page(s): 208-212

ZnO Nanoparticles as Feed Supplement on Growth Performance of Cultured African Catfish Fingerlings

Sun, 01 Apr 2018 00:00:00 GMT

Title: ZnO Nanoparticles as Feed Supplement on Growth Performance of Cultured African Catfish Fingerlings Authors: Onuegbu, C U; Aggarwal, A; Singh, N B Abstract: An experiment was carried out to investigate the effects of zinc oxide nanoparticles (nZnO) (T₁) and macro zinc oxide (ZnO) (T₂) as feed additives against basal diet (control), on the growth performance, blood parameters and carcass quality of African catfish. nZnO was synthesized and characterized by X-ray diffraction and scanning electron microscopic techniques. Different levels (0.0, 0.2, 0.4, 0.8, 1.2, and 1.6 g Kg^-1) of each of the treatments (T₁ and T₂) were supplemented to a basal fish feed and, together with the control, fed to different groups of the fingerlings for a period of 7 weeks. Fish fed control diet (C) showed significantly (p < 0.05) lower percent weight gain compared to those fed T₁ and T₂ diets at the end of the experimental period. T₁ showed significantly (p < 0.05) higher performance as compared to T₂. Protein content was significantly higher in control diet fed fish compared to those fed T₁ and T₂ diets, and significantly higher in fish fed T₂ compared to those fed T₁ diets. Fat content in fish followed the dietary sequence T₁ < T₂< Control. Hematological parameters (RBCs, WBCs, Hb and Hct) increased significantly in the order Control < T₁ < T₂. Nano form of zinc oxide was found to be a better form of dietary zinc supplement than bulk zinc oxide. Page(s): 213-218

Anti-cancer Investigation of Newly Derived Alicyclic ring and Morpholine Supported Hybrid Molecules by Industrially viable Route

Sun, 01 Apr 2018 00:00:00 GMT

Title: Anti-cancer Investigation of Newly Derived Alicyclic ring and Morpholine Supported Hybrid Molecules by Industrially viable Route Authors: Kapadiya, K; Pandya, M; Rathod, C; Dhalani, J; Dhaduk, B Abstract: In an attempt to design and synthesize a new class of anticancer molecules, we have reported coupling of aryl aldehyde, p-toluidine and morpholine based isocyanide with cyclopropane carboxylic acid to generate a small library of 08 compounds (5a-5h) by ugi multicomponent reaction in a single step manner. Structures of the newly synthesized compounds were recognized on the basis of spectral data i.e. ¹H NMR, ¹³C NMR, IR and Mass. These compounds were screened for their anticancer activity against nine basic panels as well as NCI-60 cell-lines. In vitro anticancer studies revealed that the compound 5ashowed maximum potency against HCT-116 in colon cancer cell lines with GI₅₀ values 46.27 µg/ml. Page(s): 219-224