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A social relationship-based energy efficient routing scheme for Opportunistic Internet of Things
Rani,Amita Malik 한국통신학회 2023 ICT Express Vol.9 No.4
Opportunistic Internet of Things (OppIoT) combines Opportunistic Networks and the Internet of Things to provide opportunistic communication between IoT devices and human-created communities in order to improve network connectivity, reliability, and longevity. This is significant because it introduces a new approach to connect and communicate smart devices in situations where there is no end-to-end connectivity. Due to the non-stable existence of connectivity between nodes, building a scalable, flexible, interoperable, and energy efficient routing protocol is a difficult issue. This study presents a new routing protocol for the Opportunistic Internet of Things called Social relationship based Energy Efficient Routing (SEER), which bases routing decisions on the forwarding feasibility degree, residual energy, and buffer capacity of nodes. SEER surpasses EBR and EDR in terms of delivery probability, hop count, and overhead ratio, according to simulation results utilizing the Opportunistic Network Environment (The ONE) simulator.
ID- Based Authentication for WiMAX
Pushpi Rani1,Brijesh Kumar Chaurasia,Geetam Singh Tomar 보안공학연구지원센터 2016 International Journal of Future Generation Communi Vol.9 No.2
WiMAX is broadband wireless system being used for long range wireless networking, which makes this system vulnerable to security breaches. In this paperwe present authentication scheme using ID-based signature scheme for WiMAX, which offers a certificate-less public key verification. The proposed scheme has also increased message processing throughput as it has used elliptic curve cryptosystem, sigencryption and identity based cryptography.
Manju Rani,Sanjeev Maken,Shalu Agarwal,Priyanka Lahot 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.5
Excess molar enthalpies (HEm ) of formamide (1) + 1-butanol or 2-methyl-1-propanol or 2-methyl-2-propanol (2) mixtures have been measured at 298.15 K over the entire composition range using flow micro calorimeter. The excess enthalpy data along with previously published excess volumes data (VEm )(M. Rani, S. Maken, J. Ind. Eng. Chem. 18 (2012) 1694) have been utilised to study the thermodynamics of molecular interactions in terms of Prigogine–Flory–Patterson theory and Treszczanowicz–Benson association model with a Flory contribution term. The Treszczanowicz–Benson model was developed for alkane + alkanol systems considering Mecke–Kempter type of association in alkanol. In this paper the Treszczanowicz–Benson association model was applied, for the first time, to binary mixtures containing both components associated (butanol and formamide) through hydrogen bonding. In both the cases,when either of formamide or butanol was assumed to be associated, the calculated HEm and VEm values compared reasonably well with the corresponding experimental data, but the agreement is not very impressive for excess enthalpy in formamide + 2-methyl-2-propanol mixtures. Extent of inter-molecular H-bonding in formamide and butanols in their binary mixtures was also reflected in their molar enthalpy of association of H-bonding Dh0H.
Rani Bushra,Mu. Naushad,Gaurav Sharma,Ameer Azam,Zeid Abdullah ALOthman 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.7
A composite material polyaniline-Zr(IV) phosphoborate (PZPB) was synthesized via sol-gel method by the combination of Zr(IV) phosphoborate and polyaniline. The PZPB composite material was characterized by various analytical techniques. The PZPB composite material was found to be selective for Hg2+ metal ion due to the high distribution coefficient values for Hg2+ metal ion in all mediums. The PZPB composite material was used for Hg2+ removal under different experimental conditions. The antibacterial activity of PZPB composite material was also studied against E. coli.
Rani, Manviri,Shim, Won Joon,Jang, Mi,Han, Gi Myung,Hong, Sang Hee Pergamon Press 2017 Chemosphere Vol.185 No.-
<P><B>Abstract</B></P> <P>Expanded polystyrene (EPS) is a major component of marine debris globally. Recently, hazardous hexabromocyclododecanes (HBCDDs) were detected in EPS buoys used for aquaculture farming. Subsequently, enrichment of HBCDDs was found in nearby marine sediments and mussels growing on EPS buoys. It was suspected that EPS buoys and their debris might be sources of HBCDDs. To confirm this, the release of HBCDDs from EPS spherules detached from a buoy to seawater was investigated under field (open sea surface and closed outdoor chambers with sun exposure and in the dark) and laboratory (particle-size) conditions. In all exposure groups, initial rapid leaching of HBCDDs was followed by slow desorption over time. Abundant release of HBCDDs was observed from EPS spherules exposed to the open sea surface (natural) and on exposure to sunlight irradiation or in the dark in controlled saline water. Water leaching and UV-light/temperature along with possibly biodegradation were responsible for about 37% and 12% of HBCDDs flux, respectively. Crumbled EPS particles (≤1 mm) in samples deployed on the sea surface for 6 months showed a high degree of weathering. This implies that surface erosion and further fragmentation of EPS via environmental weathering could enhance the leaching of HBCDDs from the surface of EPS. Overall, in the marine environment, HBCDDs could be released to a great extent from EPS products and their debris due to the cumulative effects of the movement of large volumes of water (dilution), biodegradation, UV-light/temperature, wave action (shaking), salinity and further fragmentation of EPS spherules.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Field and laboratory observations for leaching of HBCDDs from EPS into seawater. </LI> <LI> EPS debris/small fragments as source of hazardous chemicals in marine environment. </LI> <LI> Rapid initial leaching of HBCDDs from EPS fragments is followed by slow desorption. </LI> <LI> Water leaching, UV-light/temperature and fragmentation enhanced the release of HBCDD. </LI> </UL> </P>
Rani Bushra,Mu. Naushad,Rohana Adnan,Zeid A. AlOthman,Mohd Rafatullah 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.21 No.1
Polyaniline Sn(IV) tungstomolybdate nanocomposite (PSTM) was synthesized by sol–gel method. Thephysico-chemical properties of PSTM were studied using FTIR, TGA, XRD, SEM, and TEM. The materialwas successfully used for the removal of Pb2+. Batch experiments were performed as a function of variousexperimental parameters such as effect of pH (2–8), contact time (5–60 min), initial Pb2+ concentration(10–30 mg L 1) and temperature (20–50 8C). The removal rate of Pb2+ using PSTM was fast andequilibrium established within 50 min. Kinetic studies showed better applicability for pseudo-firstordermodel. The values of thermodynamic parameters (DG8, DH8 and DS8) were also computed.
Rani, Ruma,Dahiya, Shakti,Dhingra, Dinesh,Dilbaghi, Neeraj,Kim, Ki-Hyun,Kumar, Sandeep Elsevier 2017 European journal of pharmaceutical sciences Vol.106 No.-
<P><B>Abstract</B></P> <P>Glycyrrhizin is an active constituent of the roots and rhizomes of <I>Glycyrrhiza glabra</I> and has anti-hyperglycemic effects. In this study, nanoparticles (NPs) loaded with glycyrrhizin or metformin were evaluated <I>in vivo</I> for their anti-hyperglycemic potency towards type-II diabetes in rats. The NPs were produced <I>via</I> the ionotropic gelation method using the biocompatible polymers chitosan and gum arabic. The polymer concentration was optimized using the 3<SUP>2</SUP> factorial method to acquire both minimum particle size and maximum encapsulation efficiency. The NPs were then characterized with respect to particle size, encapsulation efficiency, stability, chemical interactions, and <I>in vitro</I> drug dissolution profiles using spectroscopic and microscopic analysis. Furthermore, glycyrrhizin and metformin and their nanoformulations were administered for 21 successive days to diabetic rats. Glycyrrhizin-loaded NPs had significant anti-diabetic effects even though they contained approximately one quarter of the dosage relative to the pure form.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Development of Functional Jackets Considering the Working Posture of Rebar Workers
( Rani Eom ),( Yejin Lee ) 한국감성과학회 2021 추계학술대회 Vol.2021 No.0
This study was a functional jacket was manufactured by designing work clothes considering the working postures of rebar workers. As a result of developing stretchy jacket with a large pattern area, it was a suitable for rebar workers.
Rani, Zikhona T.,Nantapo, Carlos W.T.,Hugo, Arnold,Muchenje, Voster Asian Australasian Association of Animal Productio 2014 Animal Bioscience Vol.27 No.11
The objective of the study was to determine the quality and fatty acid profiles of mutton cuts purchased from rural and urban localities in South Africa. Five hundred and ten samples were collected in four seasons from both rural and urban shops and butcheries. Samples were immediately transported to the laboratory in cooler boxes with ice where the following physico-chemical characteristics of mutton were determined; meat pH, color ($L^*$, $a^*$, and $b^*$), cooking losses and Warner Braztler shear force and replicates stored at $-20^{\circ}C$ pending fatty acid analysis. Meat $L^*$ values were lowest ($24.7{\pm}0.49$) in winter and highest ($32.2{\pm}0.49$) in spring. The loin and sirloin cuts recorded the highest intramuscular fat whilst rib and leg cuts recorded the lowest intramuscular fat. In conclusion intramuscular fat, fatty acid profiles and physico-chemical quality of mutton were significantly affected by season and meat portion and not necessarily by the locality and class of shop.