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1984 articles for “surface” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Flexural Analysis of Thick Plates by Hyperbolic Shear Deformation Theory
Abstract: Hyperbolic shear deformation theory is used for the flexural analysis of isotropic plates with various loading cases. The theory takes account effect of transverse shear deformation. The transverse shear strains distribution through the thickness of the plate varies according to hyperbolic cosine function. The transverse shear stress can be obtained directly from the constitutive relations satisfying the shear stress free surface conditions on the top and bottom surfaces of the …
Published in Journal of Experimental & Applied Mechanics · Vol. 2, Issue 1, 2011 · pp. 17–37 Read article
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Experimental Validation with CFD Analysis of Radiation Shield Plate for Cryopump Application
Abstract: Cryopump is used in fusion reactor to evacuate the plasma exhaust from the torus vessel and to achieve the ultra high vacuum. The radiation shield is an important part of cryopump as it prevents direct radiation heat load on cryopanels from outer shell. A sample of radiation shield plate was tested for pressure drop and heat transfer. It consists of polished stainless steel sheets which are spot welded in diamond …
Published in Journal of Experimental & Applied Mechanics · Vol. 6, Issue 1, 2015 · pp. 19–22 Read article
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Prevalence of Staphylococcus aureus and Methicillin-Resistant Staphylococcus aureus (MRSA) in Laboratory Environment
Abstract: Staphylococcus aureus and methicillin-resistant Staphylococcus aureus (MRSA) are widely distributed in the world and pose a major public health problem. It is one of the important organisms that are implicated in hospital acquired infections. These pathogens are responsible for morbidity and mortality especially in immunocompromised patients. In many, the organism is present as normal flora in healthy individuals. This study was undertaken to determine the prevalence of S. aureus and …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 3, Issue 1, 2013 · pp. 39–44 Read article
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Fabrication of Micro/Nano-structures in Soda-Lime Glass by Single-beam Femtosecond Laser Writing
Abstract: In this paper, we demonstrate the formation of controllable periodic micro/nano-holes and horizontal periodic micro/nano-gratings on the surface of and inside soda-lime glass by irradiation with a single-beam femtosecond laser. These kinds of periodic micro/nano-structures are fabricated on the surface of and different layers inside soda-lime glass without damaging other layers. Suitable control over various irradiation conditions of the femtosecond laser beam, such as average pulse energy, scanning speed, scanning …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 2, Issue 2, 2012 · pp. 39–47 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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Synthesis and Characterization of Co-Doped ZnO Nanoparticles by Electrochemical Method: Photodegradation Kinetics of Bromophenol Blue Dye, Textile Effluent and Study of Antibacterial Activity
Abstract: ZnO nanoparticles doped with cobalt were synthesized by electrochemical method. The crystal structure and surface morphology were characterized by X-Ray diffraction and Scanning electron microscopy. The optical properties were studied by UV-Vis spectroscopy and from this the band gap energy was found to be 3.17 eV. The XRD data revealed that the crystalline size to be ~21.23 nm. The functional group test was done by FTIR-spectroscopy. SEM results showed the …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 5, Issue 1, 2015 · pp. 1–13 Read article
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Role of Semiconducting Nanomaterials in Polymer Solar Cell
Abstract: This paper discusses the schematic aspect of semiconducting nanoparticle as applicable in harvest of solar energy via polymer solar cell and the significance of its various nano-layers. As recently observed semi-conducting properties in some inorganic materials have become topic of rigorous research for application in photovoltaic cells. Polymer solar cells are promising alternative to conventional solar cells which are made of crystalline silicon, to overcome their drawbacks such as high …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 5, Issue 1, 2015 · pp. 23–26 Read article
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Box Behnken Design for Optimization of Operating Conditions for Methyl Violet Decolorization using Momordica Charantia Peroxidase
Abstract: Methyl violet is a triphenylmethane dye which is recalcitrant and it is difficult to degrade it by conventional methods. Enzyme based remediation methods have gained importance as they are cost effective, highly specific and eco friendly. Methyl violet was degraded using crude peroxidase from bitter gourd (Momordica charantia). To optimize the decolorization conditions of methyl violet by crude Momordica charantia peroxidase, Response Surface Methodology (RSM) using Box Behnken (BB) design …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 1, Issue 1, 2011 · pp. 45–52 Read article
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Thermal Modeling of Open Sun Drying System: An Experimental Validation
Abstract: In the work being presented, the expressions for crop and moist air temperatures of open sun drying system in quasi - static state conditions have been derived. The analysis was carried out by writing energy balance equations for crop surface and moist air above the crop surface. A computer model was developed to predict the crop temperature and moisture evaporation rate of potato slices of approximately 2.5 mm thickness exposed …
Published in Journal of Energy, Environment & Carbon Credits · Vol. 5, Issue 2, 2015 · pp. 30–39 Read article
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Investigations on Microbial Growth Inhibition by Carbon Based Nanomaterials
Abstract: We have studied the antimicrobial activity of carbon-based nanomaterials e.g. graphene oxide with their mechanism of action. We have synthesized the graphene oxide using modified Hummer’s method from high purity graphite precursors. The microstructures and morphology of graphene-based materials have been studied using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). The specific surface area and porosity analysis of graphene oxide are analyzed using …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 8, Issue 3, 2018 · pp. 36–43 Read article
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Microfluidic Flow of Aqueous Ethanol and Aqueous Isopropyl Alcohol in the SU-8 based Microchannel Bends
Abstract: In this work, a total of 8 individual SU-8 based microchannel bends as microfluidic devices are fabricated by the maskless lithography and indirect bonding technique according to the performed designs. Dyed aqueous ethanol (50% dyed water, 50% ethanol) and dyed aqueous isopropyl alcohol (50% dyed water, 50% isopropyl alcohol) are prepared and used as working liquids to test the fabricated microfluidic devices. A suitable CMOS camera is used to record …
Published in Journal of Aerospace Engineering & Technology · Vol. 9, Issue 1, 2019 · pp. 23–26 Read article
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Short Review on Microfluidic Lab-on-a-Chip Systems for Future Applications in Space Technology
Abstract: The brief description on laboratory-on-a-chip systems for microfluidic applications is provided in this short review. The fabrication of polymethylmethacrylate (PMMA) based microfluidic device is briefly described by providing recorded snap-shot images of surface-driven capillary flow in PMMA microchannel bend. Microfluidic lab-on-a-chip systems are already useful in bioengineering and materials-science. A brief attempt has been made to establish the probable applications of microfluidic lab-on-a-chip systems in space technology. Concept theory is …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 10, Issue 1, 2020 · pp. 26–30 Read article
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Cyclic Nanoindentation and Nano-scratch Behaviour of CaCO3/PMMA Nanocomposite
Abstract: The calcium carbonate surface modified with γ-methacryloxypropyltrimethoxysilane was carried out to prepare poly (methyl methacrylate) based composite. The grafting of PMMA increased as the weight ratio between MMA and n-CaCO3 increased, while the grafting efficiency of PMMA decreased. Transmission electron micrograph showed that MPTMS modified n-CaCO3 covered with PMMA was formed by emulsion polymerisation. The scratch resistance of n-CaCO3/PMMA nanocomposites are highly influenced by reinforcement’s type. The effects of n-CaCO3 …
Published in Journal of Nanoscience, NanoEngineering & Applications · Vol. 10, Issue 2, 2020 · pp. 25–36 Read article
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Heat Transfer Enhancement in Solar Parabolic Trough Collectors Design Using C-shape, V-shape, and Reverse L-shape Roughness
Abstract: Solar energy can be collected and used in a large variety of ways including: passive daylighting,heating liquids and gasses, or generating electricity. Additionally, many energy sources such as wind,biomass, hydroelectricity, and even fossil fuels originate from the energy provided by the sun.Parabolic solar concentration systems are state-of-the-art or mature technology. Parabolic-troughsolar concentrating systems are parabolic-shaped collectors made of reflecting materials. Thecollectors reflect incident solar radiation onto its focal line toward …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 8, Issue 1, 2021 · pp. 26–41 Read article
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A Review on Solar Air Heater
Abstract: Solar energy has grown in importance in recent years as a result of the negative environmental effects of greenhouse gas emissions from fossil fuel combustion, as well as the rising cost of electricity generation as traditional energy sources become scarce. Solar air heaters are the most straightforward and cost-effective technique to harness solar energy. It converts solar energy into thermal energy for a variety of heating applications, including timber seasoning, …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 9, Issue 1, 2022 · pp. 29–32 Read article
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Analysis of Heat Transfer in a Heat Exchanger with Triangular Fins Using Finite Element Modeling
Abstract: The influence of radiation and convection on a catalytic reactor's triangular heat exchanger fins are examined. Heat escapes from the surface by radiation and convection having being transported by conduction throughout the fin. Convection and radiation enable the fin's tip to lose heat, whereas the base of the fin is kept at a constant high temperature. One of the walls is taken for consideration because of its symmetry and ease …
Published in Journal of Refrigeration, Air conditioning, Heating and ventilation · Vol. 10, Issue 3, 2023 · pp. 16–23 Read article
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Hypersonic Analysis of Mu Space Engineering Spacecraft (Muses-C) Re-Entry Capsule
Abstract: During the most recent decade, a quick development of learning in the field of reemergence and planetary passage has brought about numerous critical advances helpful to the understudies, specialists and researchers. The issue related with space flight, interplanetary travel or satellite circle is the physical recuperation or survival of the vehicle and its payload (faculty, instruments, etc.) on the earth surface or planetary surface. For atmospheric planets, the issue includes …
Published in Journal of Aerospace Engineering & Technology · Vol. 9, Issue 2, 2019 · pp. 1–19 Read article
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Design of Triple Rocker Four Bar Mechanism and Spiral Spring as Suspension for the Planetary Rover Prototype
Abstract: Now-a-days rovers plays important role in space organizations for the space explorer like NASA, ISRO, whereas Enter and perform required operation in the no-man entry region like space, medical requirement, Underground, mining, and military actions. These need to flexible towards up and Down surfaces to tilt itself and adjust to move over surface obstacles on that Region and isolate as automatic autonomous Suspension. This paper reveals about the design of …
Published in Journal of Aerospace Engineering & Technology · Vol. 12, Issue 3, 2022 · pp. 16–26 Read article
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Nano-Scale Coating to Demonstrate the Capillary Motion of Dyed Water in a Single PMMA Microfluidic Device towards the Probable Fabrication of nanofluidic Engine-on-a-Chip
Abstract: A single microfluidic device is fabricated by polymethylmethacrylate (PMMA) using the maskless lithography, hot embossing lithography, nano-coating of diamond-like carbon (DLC), and direct bonding technique. A CMOS camera catching 25 frames per second with a corresponding time-scale resolution of 0.04 second is used to record the surface-driven microfluidic flow of dyed water. A comparison is made between the experimental results and analytical solution to determine the diffusion coefficient in this …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 22, Issue 3, 2020 · pp. 12–15 Read article
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Short Review on Fluid Mechanics with the Domain of Nanotechnology for Applications in Nuclear-Reactors
Abstract: In this work, a brief review on microfluidic flow is provided. Also, the brief ideas on very large scale integration (VLSI) circuits are provided. A single polymethylmethacrylate (PMMA) based gradual expansion microchannel is fabricated by the maskless lithography, hot embossing lithography and direct bonding technique. Surface-driven microfluidic flow of dyed water is recorded in the fabricated device using a CMOS camera catching 25 frames per second with a corresponding time-scale …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 23, Issue 2, 2021 · pp. 45–50 Read article