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1348 articles for “Metallic”
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Janus (Two-faced) Molecules/Biomolecules
Abstract: Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4 This article deals with janus (two-faced) molecules/biomolecules from different scientific fields. Examples selected include simple to complex molecules/biomolecules. Janus spheres, particles, nanoparticles, homocysteine, two codon in genetics, alcohol, nitric oxide, cholesterol, various drugs, proteins, enzymes, cannabinoid, ethylene glycol, two-faced membranes, membrane lipids, bile acids, two-faced bacteria, antibiotics, cancer genes, serotonin, reactive oxygen species, metallic copper surfaces, carbon nanotubes, polypharmacy, etc., are …
Published in OmniScience: A Multi-disciplinary Journal · Vol. 2, Issue 2, 2012 · pp. 29–60 Read article
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Extracellular Biosynthesis of Silver Nanoparticles using the Fungus Pleurotus ostreatus and their Antibacterial Activity
Abstract: In the present study, an eco-friendly process for the synthesis of nanomaterials using a fungus (Pleurotus ostreatus) has been attempted. The fungus supernatant of seed culture was used for the biosynthesis of silver nanoparticles. The aqueous silver ions were reduced to silver metal nanoparticles when treated with the fungal supernatant. After 72h of treatment, silver nanoparticles were obtained. These silver nanoparticles were characterized by UV–Vis spectroscopy, scanning electron microscopy (SEM), …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 2, Issue 2, 2012 · pp. 28–38 Read article
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Green Synthesis of Gold Nanoparticles Using Piper Nigrum (Black Pepper) Aqueous Extract
Abstract: In the present study, we wish to report the green synthesis of gold nanoparticles using aqueous extract from fruit of black pepper. The extract with different concentrations was reduced with HAuCl4 aqueous solution at room temperature. The color change, pH change and UV-visible spectroscopic analysis reveal the surface plasmon resonance (SPR) of the final reaction product which confirms the reduction of Au3+ ion to gold nanoparticles. The FTIR spectra confirms …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 2, Issue 2, 2012 · pp. 48–57 Read article
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Photo-Assisted Room Temperature Synthesis of Brightly Fluoresce ZnSe Quantum Dots in Aqueous Medium
Abstract: The ZnSe quantum dots (QDs) have gained considerable research interest as an alternative to heavy-metal-based QDs and are non-toxic, have strong emission in UV-blue region, and with wider band gap are suitable for doping various ions to tune their optical and electronics properties. For biological applications, aqueous stability of QDs is an indispensable prerequisite. Mercapto-carboxylic acids such as mercaptopropionic acids (MPA), thioglycolic acids (TGA), etc., are commonly used for providing …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 4, Issue 2, 2014 · pp. 5–13 Read article
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Patterning of Carbon Nanotubes on Silicon Wafer Using Self-Assembly Techniques
Abstract: Nanotechnology is an emerging technology that enables scientists to develop new materials and products at the molecular level. A carbon nanotube (CNT) is a rolled sheet of carbon atoms, coaxially arranged in cylindrical shape. Single-walled CNTs are ideal quantum systems for exploring basic science in one dimension. To find use in electronics, single-walled CNTs need to be efficiently separated by electronic type and aligned to ensure optimal and reproducible electronic …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 5, Issue 2, 2015 · pp. 6–15 Read article
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Effect of CNTs on Mechanical Properties of Mg-CNT Nano Composites Synthesized Through Stir Casting
Abstract: Multi-wall carbon nanotubes (MWCNTs) reinforced magnesium (Mg) nano composites were synthesized using vacuum stir casting technique. Three different weight fractions of MWCNTs (0.33, 0.66, 0.99 wt%) are added with Mg melt and stirred at 450 rpm for 10 min to obtain homogeneous mixture and deposited in a metallic mould. The deposited composite is then extruded at 450oC with an extrusion ratio of 11.11. Samples are prepared from the extruded composite …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 5, Issue 3, 2015 · pp. 60–66 Read article
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Graphene Coating on Cutting Tools Can Remove the Use of Coolants
Abstract: Graphene attracts particular interests due to its unique properties like high temperature operations, high mechanical strength and lubricating properties etc. Recently Arshi and Dighewar have studied to improve surface roughness, tool life and production rate of materials by using a protective covering of titanium nitride (TiN) over steel tools [1]. They have obtained satisfactory results. In this paper, we use graphene as a coating on metal cutting tools and have …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 6, Issue 1, 2016 · pp. 1–5 Read article
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Study of Nanoindentation Characteristics of Al/B4C/CNT Composites
Abstract: Nanoindentation characterization is one of the essentialities that are used in current work to measure hardness and elastic moduli properties of Al reinforced with B4C particulates and carbon nano-tube (CNT). The nanoindentation characterization enables measurements of mechanical characteristics on nano scale. The method is very effective to understand the localized variations in mechanical behavior of the composites that are influenced by precipitation of reinforcements. The composites were synthesized en-route powder …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 6, Issue 2, 2016 · pp. 7–12 Read article
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Development of Characterization Techniques of Various Nanocomposites: A Review
Abstract: Abstract Nanotechnology is basic research and development that is a phenomenon in laboratories all over the world. A nanometer (nm) is one thousand millionth of a meter. For comparison, a red blood cell is approximately 7,000 nm wide and a water molecule is almost 0.3 nm across. Nano-scale is a scale where the properties of materials can be very different from those at a larger scale. Nanoscience is a study …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 7, Issue 2, 2017 · pp. 7–9 Read article
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A Note on General Bioremediation Technologies
Abstract: The global environmental condition is under huge stress. The reason could be urbanizationand industrialisation and the ever increasing population and its pressure on the naturalresources. The environmental pollution control has become the most challenging task to dealwith. There are many ways through which pollution can be controlled. One such efficient toolis the bioremediation. The usage of certain microorganisms to degrade or reduce thepollutants like heavy metals or hazardous wastes at …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 7, Issue 2, 2017 · pp. 4–6 Read article
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Effect of Complexation of Copper with a Preferred Amino acid of Saccharomyces cerevisiae NCIM 3558 on its Metabolism
Abstract: The present work studies the effect on the growth of Saccharomyces cerevisiae NCIM 3558when copper sulphate pentahydrate is complexed with a preferred amino acid of S.cerevisiaeNCIM. The study showed the fact that not only the amino acid or ligand but also the metal ioninvolved is an important factor for the biological effects of ligand–metal complexes effects onyeast metabolism per se. Studies are elaborated extensively.Keywords: Saccharomyces cerevisiae, glutamine copper, antagonist, glucose …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 7, Issue 2, 2017 · pp. 7–11 Read article
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Knowledge, Attitude and Practices Regarding E-Waste in Resettlement Areas of East Delhi
Abstract: E-waste is collected and processed for disposal in urban slums of the metropolis of India by untrained workers without using personal protective equipment, which are detrimental not only to their health but also to the environment. This study was designed to find the knowledge, attitude, and practices of e-waste handling and management among the workers involved in e-waste handling and management in East district of Delhi. (Seelampur and Shastripark). A …
Published in Research and Reviews: A Journal of Medicine · Vol. 1, Issue 1, 2011 · pp. 23–28 Read article
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Biochemical and Kinetic Investigations of Partially Purified Thermostable Acid Phosphatases from Solanum tuberosum and Citrus limonium
Abstract: Biochemical and kinetic properties of partially purified thermostable acid phosphatases from Solanum tuberosum and Citrus limonium involving ammonium sulphate fractionation have been investigated. The maximum specific activity in Solanum tuberosum and Citrus limonium was found in 40–80% (ACP I) and 0–40% (ACP II) fractions, respectively. The specific activities of ACP I and ACP II were 46.01 and 48.00 units mg − 1 with Km values of 1.00 and 2.50 mM, …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 2, Issue 1, 2012 · pp. 1–10 Read article
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Biochemical Biomarkers as a Tool in Chromium Induced Toxicity to Green Tiger Prawn, Penaeus semisulcatus (De-Haan, 1844)
Abstract: Estuarine ecosystem and its biodiversity are at higher risk due to coastal contamination by heavy metals and conservation of biodiversity can be accomplished by utilizing biomarkers of pollutant at different exposure levels. In the present study, chronic toxicity test was conducted to evaluate the antioxidants and enzymes as the possible biomarkers in Green Tiger Prawn, Penaeus semisulcatus. The chronic endpoint value (MATC), no-observed effect concentration (NOEC), and low-observed effective concentration …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 4, Issue 2, 2014 · pp. 1–12 Read article
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Green Synthesis of Silver Nanoparticles Using The Leaf Extract of Micrococca mercurialis. (L.) Benth. and Its Antibacterial Activity
Abstract: In the present study, fresh and powder leaf extracts of Micrococca mercurialis. (L.) Benth. were used for green synthesis of metallic silver nanoparticles (SNPs). The efficacy of SNPs was tested against some human and animal pathogens. Stable SNPs were formed after adding aqueous solution of 1 mM AgNO3 with the fresh and powder leaf extracts. Quantitative analysis of green synthesized SNP was monitored by UV-visible spectroscopy. Bacteriological tests were performed …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 5, Issue 2, 2015 · pp. 21–26 Read article
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Mechanisms of Abiotic Stress Responses and Tolerance in Plants Physiological Intervention
Abstract: Recent progress in our understanding of the biological interactions that occur in the rhizosphere and of the practical requirements for inoculant formulation and delivery should increase the technology’s reliability in the field and facilitate its commercial development. The present work was initiated to characterize the abiotic stress-tolerating strains of chickpea (Cicer arietinum) rhizobium isolated from the nodules of chickpea plants collected from the field. Comparative ecological studies were carried out …
Published in Research and Reviews : A Journal of Life Sciences · Vol. 6, Issue 1, 2016 · pp. 19–26 Read article
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Thermistor based ultra-sensitive thermal probe and its signal processing methods suitable for solution calorimeter
Abstract: A sensitive thermometric probe to measure a minute change in temperature of the order of mK, is designed and developed as a prerequisite for the in-house development of solution calorimetry system to study the heat of solutions of the compounds containing alkali metals. A measurement range of 2 K is considered in commensurate with the volume of the solution and the sample size. In this paper, construction of the probe …
Published in Journal of Instrumentation Technology & Innovations · Vol. 2, Issue 2, 2012 · pp. 23–31 Read article
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Efficiency Improvement of Permanent Magnet Rotating Electrical Machine (PMREM) with Permanent Magnet Material Selection
Abstract: There are many Permanent Magnet Machines available in the market with the different type of PM material. The rare earth permanent magnet material changes the whole scenario of the market. In comparison with SmCo and AlNiCO magnets, NdFeB magnets have low corrosion resistance. Their chemical reactivity is similar to that of alkaline earth metals like magnesium. Under normal conditions the NdFeB reacts slowly. The reaction is faster at higher temperatures …
Published in Journal of Instrumentation Technology & Innovations · Vol. 4, Issue 1, 2014 · pp. 1–6 Read article
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Finite Element Analysis of Double Fillet Weld
Abstract: Finite element analysis of the double fillet weld joint has been conducted in the present paper. Analysis of stress generated at the weld toes and weld root has been conducted and shown. Fine meshing near the weld toes and root has been adopted for accurate results. Fillet weld considered in the present study have two vertical plates, which are attached to a horizontal plate by welding. Study reveals that weld …
Published in Journal of Instrumentation Technology & Innovations · Vol. 6, Issue 2, 2016 · pp. 28–33 Read article
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Insulation Test (Leakage Current Test) on 1kWp PV Array at Real Time Condition
Abstract: The study is based on the insulation test of 1 kWp solar photovoltaic array on real time condition. The insulation resistance is the dielectric property of the module and is defined as amount of insulation material provided in between solar cells and metallic frame. While installing the solar photovoltaic module, we must consider about the safety criteria, since safety is the first key element for all types of systems. Since, …
Published in Journal of Instrumentation Technology & Innovations · Vol. 7, Issue 1, 2017 · pp. 25–30 Read article