http://nopr.niscpr.res.in/handle/123456789/2886 Mon, 12 Oct 2026 22:28:03 GMT 2026-10-12T22:28:03Z http://nopr.niscpr.res.in/handle/123456789/2921 Title: Design and VLSI architecture of non-polynomial based low probability of error (P_b) Viterbi decoder Authors: Arun, C; Rajamani, V Abstract: This paper presents implementation of a new non-polynomial approach to design a high throughput with reduced bit error probability Viterbi decoder. Increase in dfree has been achieved by proposed non-polynomial convolutional coding method. A decoder system (code rate k/n=1/6, constrain length K=4) has been implemented on Xilinx VERTEX-E. Performance of Viterbi decoder with proposed method has been improved from 27% to 75%. High speed (60.299 Mbps) and low bit error rate (BER) are achieved for Viterbi decoder. Proposed Viterbi decoder provides satisfactory probability of error (Ph) performance and high operating speed under conditions including AWGN, co-channel interference and adjacent channel interference environments. Page(s): 97-106 Sun, 01 Feb 2009 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/2921 2009-02-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/2918 Title: Energy-related applications of carbon materials-a review Authors: Srivastava, Manoj; Kumar, Manoj; Singh, Ranvir; Agrawal, U C; Garg, M O Abstract: Carbon materials, which are inert and possess good electrical conductivity, high surface area and layered structure, offer applications as electrodes in re-chargeable batteries, storage media for fuel cell for on-board hydrogen supply, fuel cell components, nano-electronic devices for computer chips, superconductors etc. This paper reviews current research on carbon materials (fullerenes, nano-sized single and multi-walled carbon tubes, graphene, carbon foam etc.) focusing on producing, distributing and storing energy. Page(s): 93-96 Sun, 01 Feb 2009 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/2918 2009-02-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/2915 Title: Ultrasound assisted adsorption of basic dye onto organically modified bentonite (nanoclay) Authors: Sonawane, Shirish; Chaudhari, Prashant; Ghodke, Shailesh; Phadtare, Sachin; Meshram, Satish Abstract: Sonochemical adsorption of basic methylene blue dye (CI 52015) into organophilic bentonite (nanoclay) is explored. Tetrabutyl ammonium chloride (TBAC) modified nanoclay has showed amorphous exfoliated nature, while N-cetyl-N,N,N trimethyl ammonium bromide (CTAB) modified nanoclay has revealed intercalating crystalline nature, as supported by X-ray analysis. Presence of NH₂, CH₂ groups onto nanoclay platelet is confirmed from FTIR spectrum analysis. In presence of ultrasound, due to decrease in diffusion resistance, both modified nanoclays exhibit higher adsorption due to an easy insertion of dye into clay platelets. Calculated Langmuir adsorption isotherm, Q₀ and Langmuir constant ‘b’ for TBAC modified nanoclay, respectively were 0.34 mg/mg 0.246. Intercalating agent has a significant contribution during overall process. Page(s): 162-167 Sun, 01 Feb 2009 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/2915 2009-02-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/2914 Title: Biodegradation of Orange II dye by Phanerochaete chrysosporium in simulated wastewater Authors: Sharma, Praveen; Singh, Lakhvinder; Dilbaghi, Neeraj Abstract: This study presents decolorization of textile azo dye, Orange II, by white rot fungus, Phanerochaete chrysosporium. Orange II (85%) was removed in 7 days (optimum decolorization on 5th day at 28-30°C and pH 5.0) in liquid cultures under shaking aerobic conditions using P. chrysosporium. Higher dye concentration in simulated dye showed inhibitory effects on decolorization. Decolorization ability of fungus was correlated to lignolytic enzyme activity. Page(s): 157-161 Sun, 01 Feb 2009 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/2914 2009-02-01T00:00:00Z