835 research outputs found
Supplementry_Information - Study on the effect of silica–graphite filler on the rheometric, mechanical, and abrasion loss properties of styrene–butadiene rubber vulcanizates
No full textSupplementry_Information for Study on the effect of silica–graphite filler on the rheometric, mechanical, and abrasion loss properties of styrene–butadiene rubber vulcanizates by AM Shanmugharaj, K Thileep Kumar, G Sivagaami Sundari, E Senthil Kumar, A Ashwini, M Ramya, P Varsha, R Kalaivani, S Raghu, and SH Ryu in Journal of Elastomers & Plastics</p
Lysobacter
No full textThe genus Lysobacter is among the youngest bacterial genera encompassing plant beneficial strains. In the last 40 years the number of bacterial species included in this genus increased, and the advent of sequencing technologies helped to show the characteristics of these bacteria. In this regard, it was proven that the absence of a flagellum is a feature not shared by all the Lysobacter species and, moreover, the cell motility of some species mainly relies on the formation of type IV pili. Culture dependent and independent methods revealed that Lysobacter members are cosmopolitan bacteria able to colonize different environments and to persist in extreme environments. Looking at the agroecosystem, strong evidence was provided on the association of these bacteria with plants, and their correlation with the phenomenon of soil suppressiveness was also shown. Although their ability to actively colonize plants and soils, the number of Lysobacter spp. strains studied for their plant beneficial potential is still limited. This might be related to the unavailability of growth media specific for the isolation of Lysobacter members. In this chapter, a semiselective growth medium was designed for the isolation of strains belonging to L. antibioticus, L. capsici, L. enzymogenes, and L. gummosus species, based on their capability to resist antibiotics. Moreover, these species are composed mostly of the plant beneficial Lysobacter spp. strains characterized so far. Their ability to control plant pathogenic bacteria, fungi, nematodes, oomycete, and protists mainly relied on various mechanisms of action such as the competition for space, the induction of plant defense mechanisms, the predation and the release of antibiotics, lytic enzymes, and volatile organic compounds. In the last ten years, more evidence has been provided about the presence of Lysobacter spp. in agricultural soils contaminated by heavy metals and petroleum derivatives. Although in their infancy, several studies proved that bacteria belonging to this genus may be applied for the bioremediation of contaminated agricultural soils. Overall, Lysobacter spp. may be considered a valuable reservoir of novel bacterial strains that may be developed to make the future of crop production more sustainable
Experimental Enhancement of Heat Transfer Analysis on Heat Pipe using SiO2 and TiO2 Nano Fluid
No full textThis paper describes the enhancement of thermal performance of heat pipe using SiO2 and TiO2 nano fliuds. The experimentation explains about the effects of heat pipe inclination and heat input on the thermal efficiency and thermal resistance. Heat pipe is an advance type of heat exchanger which transfers huge amount of heat due to the effect of capillary action and phase change heat transfer principle. Recent developments in the heat pipe with high thermal conductivity through nano fluids. This paper reviews, influence of various factors such as heat pipe tilt angle, charged amount of working fluid, nanoparticles type, size, mass volume fraction and its effect on the improvement of thermal efficiency, heat transfer capacity and reduction in thermal resistance. The nano fluid preparation and the analysis of its thermal characteristics also have been reviewed. Arunkumar. G | Dr. P. Navaneetha Krishnan | Dr. T. Senthil Kumar "Experimental Enhancement of Heat Transfer Analysis on Heat Pipe using SiO2 and TiO2 Nano Fluid" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-4 , June 2018, URL: https://www.ijtsrd.com/papers/ijtsrd13094.pd
One-pot synthesis of ni0.05 ce0.95 o2−δ catalysts with nanocubes and nanorods morphology for CO2 methanation reaction and in operando drift analysis of intermediate species
No full textThe valorization of CO2 via renewable energy sources allows one to obtain carbon-neutral fuels through its hydrogenation, like methane. In this study, Ni0.05 Ce0.95 O2−δ catalysts were prepared using a simple one-pot hydrothermal method yielding nanorod and nanocube particles to be used for the methanation reaction. Samples were characterized by XRD, BET, TEM, H2-TPR, and H2-TPD experiments. The catalytic activity tests revealed that the best performing catalyst was Ni0.05 Ce0.95 O2−δ, with nanorod morphology, which gave a CO2 conversion of 40% with a selectivity of CH4 as high as 93%, operating at 325◦ C and a GHSV of 240,000 cm3 h−1 g−1 . However, the lower activation energy was found for Ni0.05 Ce0.95 O2−δ catalysts with nanocube morphology. Furthermore, an in operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) analysis was performed flowing CO2:H2 or CO:H2 mixture, showing that the main reaction pathway, for the CO2 methanation, is the direct hydrogenation of formate intermediate
Correlation between the structural, electrical and electrochemical performance of layered Li(Ni0.33Co0.33Mn0.33)O2 for lithium ion battery
No full textThe Li(Ni0.33Co0.33Mn0.33)O2 (LNCMO) cathode material is prepared by poly(vinyl pyrrolidone) (PVP)-assisted sol-gel/hydrothermal and poly(ethylene glycol)-block-poly(propylene glycol)-block-poly (ethylene glycol) (Pluronic-P123)-assisted hydrothermal methods. The compound prepared by PVP-assisted hydrothermal method shows a comparatively higher electrical conductivity of ~2 × 10−5 S cm−1 and exhibits a discharge capacity of 152 mAh g−1 in the voltage range of 2.5 to 4.4 V, for a C-rate of 0.2 C, whereas the compounds prepared by P123-assisted hydrothermal method and PVP-assisted sol-gel method show a total electrical conductivity in the order of 10−6 S cm−1 and result in poor electrochemical performance. The structural and electrical properties of LNCMO (active material) and its electrochemical performance are correlated. The difference in percentage of ionic and electronic conductivity contribution to the total electrical conductivity is compared by transference number studies. The cation disorder is found to be the limiting factor for the lithium ion diffusion as determined from ionic conductivity values. © 2015, Springer-Verlag Berlin Heidelberg.1
Removal of nickel (II) from aqueous solutions by ceralite IR 120 cationic exchange resins
No full textThe removal of nickel from aqueous solutions under different experimental conditions using a Ceralite IR 120 cationic exchange resin (CXR) as an adsorbent was investigated by batch adsorption techniques. Batch studies indicated that the percent adsorption decreased with increasing initial concentration of Ni2+. Maximum Ni2+ removal was observed near a pH of 5.0. The adsorption process obeys the Langmuir and Freundlich adsorption isotherms. The monolayer adsorption capacity was found to be 28.57 mg/g. The sorption of nickel on the resin was rapid during the first 25 minutes and the equilibrium was found to be attained within 35 minutes. The sorption of nickel onto the resins followed reversible first-order rate kinetics. Such ion exchange resins can be used for the efficient removal of nickel from water and wastewater
Continuous supply chain collaboration : Road to achieve operational excellence
No full textSupply chain management (SCM) is becoming critical as firms recognize that competition is shifting from company versus company to supply chain versus supply chain. In the present competitive scenario, the fierce competition has driven most companies to seek means of enhancing performance beyond their four wall boundaries. The firm’s ability in collaborating with its upstream and downstream partners determines its success in attaining better performance with supply chain collaboration; a firm is able to serve fragmented markets in which end customers require more product varieties and availability with shorter product life cycle and at the same time lower supply chain costs. Hence, this paper introduces the framework of continuous supply chain collaboration (CSCC), which extends the traditional frame of reference in strategic sourcing from a supplier centric to a supply-chain-scope as continuous improvement efforts to enhance the customer satisfaction. CSCC practices are rather exceptional, yet CSCC is believed to be the single most comprehensive framework for attaining operational excellence.Continuous supply chain collaboration (CSCC); Supply chain management: Continuous improvement; Operational excellence; Supply Chain Management
Ultra-thin thermal SiOx enabled poly-Si carrier selective passivating contacts for IBC solar cell application
No full textCrystalline silicon solar cells based on poly-Si Tunnelling Oxide Passivating Contacts (TOPCon) is becoming one of the most promising solar cell structures that enable both high efficiency and low cost. The record efficiency for the Front-Back contacted (FBC) cell with TOPCon structure is 25.7 %. By moving both the metal contacts to the back side, the so-called interdigitated back contact (IBC) approach, the solar cell efficiency can be improved significantly due to the absence of optical shading from the front metal contact. Further, by narrowing the width of the metal fingers present on the rear side of an IBC solar cell, light illumination can also be made possible from the rear side. This makes the IBC solar cell a bifacial IBC solar cell. The objective of this thesis work is to optimize the Carrier Selective Passivating Contacts (CSPCs) with an ultra-thin thermal SiOX.Electrical Engineering | Sustainable Energy Technolog
One-Pot Synthesis of Ni0.05Ce0.95O2−δ Catalysts with Nanocubes and Nanorods Morphology for CO2 Methanation Reaction and in Operando DRIFT Analysis of Intermediate Species
No full textThe valorization of CO2 via renewable energy sources allows one to obtain carbon-neutral
fuels through its hydrogenation, like methane. In this study, Ni0.05Ce0.95O2−δ catalysts were prepared using a simple one-pot hydrothermal method yielding nanorod and nanocube particles to
be used for the methanation reaction. Samples were characterized by XRD, BET, TEM, H2-TPR,
and H2-TPD experiments. The catalytic activity tests revealed that the best performing catalyst was
Ni0.05Ce0.95O2−δ, with nanorod morphology, which gave a CO2 conversion of 40% with a selectivity
of CH4 as high as 93%, operating at 325 ◦C and a GHSV of 240,000 cm3 h−1 g−1. However, the lower
activation energy was found for Ni0.05Ce0.95O2−δ catalysts with nanocube morphology. Furthermore,
an in operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) analysis was
performed flowing CO2:H2 or CO:H2 mixture, showing that the main reaction pathway, for the CO2
methanation, is the direct hydrogenation of formate intermediate
A ZIF-67 derived Co 3 O 4 dodecahedron shaped microparticle electrode based extended gate field-effect transistor for non-enzymatic glucose detection towards the diagnosis of diabetes mellitus
No full textThe present study focuses on non-enzymatic glucose detection using an extended gate field-effect transistor (EGFET) based on zeolitic imidazole framework-67 (ZIF-67) derived cobalt tetraoxide (Co3O4) dodecahedron shaped microparticles. XRD has confirmed the cubic phase of Co3O4. HR-SEM images have highlighted hollow Co3O4 dodecahedra with an average particle size of 1.72 mu m. A cost-effective single-use ZIF-67 derived Co3O4 electrode has been fabricated that covers the range of glucose concentration from 1.5 mM to 42 mM (linear range: 1.5 to 10.5 mM) and has a fast response time of <4 s. The sensitivity is calculated to be 50 mu A mM(-1) cm(-2). Our prepared electrode has demonstrated a good selective response against other interfering molecules like sucrose, lactose, fructose, uric acid, and ascorbic acid. The concentration of the interfering molecules is maintained similar to the physiological conditions of human blood. As a maiden attempt, the influence of glucose concentration on the surface potential of the sensing electrode has been investigated using a scanning Kelvin probe (SKP). We have found that the work function decreases with the increase of glucose concentration. Overall, EGFET and SKP studies have revealed that the ZIF-67 derived Co3O4 dodecahedron shaped microparticle based electrode is suitable for rapid detection of glucose
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