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17 articles for “Aqueous ethanol”
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Effect of PMMA Micropillars on the Surface-Driven Capillary Flow of Dyed Aqueous Ethanol in PMMA Microchannels
Abstract: In this work, dyed aqueous ethanol (60% ethanol, 40% dyed water) is prepared as the working liquid. The effect of surface modification on the microfluidic flow of aqueous ethanol is studied in the polymethylmethacrylate (PMMA) devices. The effect of surface area to volume ratio on microfluidic flow of aqueous ethanol is also studied. The effect of microfluidic friction on microfluidic flow of aqueous ethanol is also studied. This work will …
Published in Journal of Catalyst & Catalysis · Vol. 5, Issue 2, 2018 · pp. 1–4 Read article
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Surface-Driven Capillary Flow of Dyed Aqueous Ethanol in the PMMA Microchannel Fabricated by Maskless Lithography, Hot Embossing Lithography and Direct Bonding Technique
Abstract: AbstractPolymethylmethacrylate (PMMA) as polymer is used to fabricate a dual sudden expansion microchannel by the maskless lithography, hot embossing lithography and direct bonding technique inside the cleanroom laboratory. Dyed aqueous ethanol (90% dyed water, 10% ethanol) is used as working liquid to record the surface-driven capillary flow in the fabricated microfluidic device using a CMOS camera catching 25 frames per second with a corresponding time-scale resolution of 0.04 second. This …
Published in Trends in Opto-electro & Optical Communication · Vol. 8, Issue 3, 2018 · pp. 37–40 Read article
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Surface-Driven Capillary Flow of Dyed Aqueous Ethanol in Sudden Expansion Microchannels
Abstract: AbstractIn this work, total three individual SU-8 based glass microfluidic devices are fabricated by maskless lithography and clamping. Dyed aqueous ethanol is selected as working liquid. Each surface-driven capillary flow is recorded by a CMOS camera. The filling time of surface-driven capillary flow is considered as the flow parameter to determine the flow speed. This work will be useful to fabricate the microfluidic devices for bioengineering applications.Keywords: Sudden expansion, maskless …
Published in Journal of Thermal Engineering and Applications · Vol. 4, Issue 3, 2017 · pp. 22–25 Read article
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Surface-Driven Capillary Flow of the Dyed Aqueous Ethanol in a single SU-8 based Glass Microfluidic Device integrated with the Arrays of Square Polyimide Micropillars
Abstract: In this work, a single SU-8 based glass microfluidic device is fabricated by the maskless lithography and indirect bonding technique. A particular polyimide layer at the selected portions and the arrays of square polyimide micropillars at the other portions are integrated on the microchannel bottom wall by the maskless lithography. Dyed aqueous ethanol (70% dyed water, 30% ethanol) is prepared as the working liquid in this work. A CMOS camera …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 6, Issue 1, 2019 · pp. 33–37 Read article
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Passive Capillary Flow of Aqueous Working Liquids in the PMMA Microchannel Bends
Abstract: In this work, passive capillary flows or surface-driven capillary flows are recorded in polymethylmethacrylate (PMMA) microfluidic devices using aqueous ethanol and aqueous isopropyl alcohol (IPA) as chosen aqueous working liquids. Microchannel bends are the chosen microfluidic devices with the selected microchannel widths of 50, 120 and 200 micron. This work will be useful to fabricate the PMMA laboratory-on-a-chip systems for bioengineering applications.
Published in Journal of Catalyst & Catalysis · Vol. 5, Issue 1, 2018 · pp. 21–24 Read article
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Passive Capillary Flow of Aqueous Working Liquids in the Straight PMMA Microchannels of Rectangular Cross- sections
Abstract: In this report, polymethylmethacrylate (PMMA) is used to fabricate the straight microchannels of uniform channel widths having rectangular cross-sections. Maskless lithography, hot embossing lithography and direct bonding are the chosen techniques to fabrication the straight PMMA microchannels. Aqueous ethanol and aqueous isopropyl alcohol (IPA) are the prepared aqueous working liquids to study the passive capillary flow characteristics. Total 8 individual straight PMMA microchannels are fabricated in this work. This work …
Published in Journal of Petroleum Engineering & Technology · Vol. 8, Issue 2, 2018 · pp. 5–8 Read article
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Recording of the Surface-Driven Microfluidic Flow of Aqueous Working Liquids in PMMA Microfluidic Devices
Abstract: In this work, the pristine polymethylmethacrylate (PMMA) microchannel surfaces are modified by the air dielectric barrier discharge (DBD) plasma processing, nitrogen plasma treatment, Undoped diamond-like carbon (DLC) coating, and Si-doped DLC coating, to produce the PMMA microfluidic devices having inner walls of different surface wettability. Dyed water and dyed aqueous ethanol (90% dyed water, 10% ethanol) are the selected two aqueous working liquids. The video recording of each surface-driven microfluidic …
Published in Emerging Trends in Chemical Engineering · Vol. 5, Issue 3, 2018 · pp. 24–31 Read article
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Passive Capillary Flow of Aqueous Working Liquids in the SU-8 based Microchannel Bends
Abstract: In this work, total 4 individual SU-8 based microchannel bends are fabricated by maskless lithography and indirect bonding technique. The leakage-free surface-driven capillary flow of aqueous ethanol is recorded by a CMOS camera. Also, the leakage-free surface-driven capillary flow of aqueous isopropyl alcohol (IPA) is recorded by the CMOS camera. This work will be useful in bioengineering applications.
Published in Emerging Trends in Chemical Engineering · Vol. 5, Issue 1, 2018 · pp. 20–22 Read article
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Passive Capillary Flow of Aqueous Working Liquids in the PMMA Microfluidic Devices and SU-8 based Glass Microfluidic Devices
Abstract: Abstract: In this work, total 9 individual polymeric microfluidic devices are fabricated. The passive capillary flows of aqueous working liquids are studied in the fabricated polymethylmethacrylate (PMMA) microfluidic devices and SU-8 based glass microfluidic devices. All the microfluidic devices are fabricated inside the cleanroom laboratory. Dyed aqueous ethanol and dyed aqueous isopropyl alcohol (IPA) are the selected working liquids. CMOS camera is used to record each passive capillary flow in …
Published in Recent Trends in Fluid Mechanics · Vol. 6, Issue 1, 2019 · pp. 23–28 Read article
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Effect of Leaf or Bud Extract of Euphorbia hirta L. using Different Solvents against Human Pathogenic Bacteria Staphylococcus aureus
Abstract: AbstractAntibacterial effects of leaf or bud extract of selected medicinal herb Euphorbia hirta L. were examined using agar disc diffusion method against test bacteria Staphylococcus aureus. Different solvents such as methanol, ethanol, dimethyl sulfoxide and aqueous were used for extraction. Maximum in vitro inhibition was observed in methanol extracts of Euphorbia hirta L. which offered inhibition zone of 20 mm and zone of inhibition area of 471.00 mm² against S. …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 8, Issue 3, 2018 Read article
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Evaluation for Skeletal Muscle Relaxant Activity of Celosia Argentea
Abstract: To evaluate the different extracts of Celosia argentea seeds for skeletal muscle relaxant activity using different model of muscle grip. The skeletal muscle relaxant activity was carried out using Rota rod model in mice. Petroleum ether, ethanol and aqueous extracts had shown more significant activity by decrease in the fall of time. This activity may due to the phytochemical present in the extracts which were found in primary crude extract …
Published in Research and Reviews: A Journal of Toxicology · Vol. 8, Issue 1, 2018 · pp. 18–19 Read article
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Report on Microfluidic Flow of Dyed Working Liquids inside the Polymeric Devices
Abstract: In this experimental work, a single SU-8 based glass microfluidic device is engineered by the maskless lithography and indirect bonding technique. Also, total nine individual polymethylmethacrylate (PMMA) based microfluidic devices are fabricated by maskless lithography, hot embossing lithography, and direct bonding technique. Dyed ethylene glycol, dyed ethanol, and dyed aqueous isopropyl alcohol (50% water, 50% IPA) are prepared and used as working liquids to record each surface-driven microfluidic flow. The …
Published in Journal of Thin Films, Coating Science Technology & Application · Vol. 8, Issue 1, 2021 · pp. 22–29 Read article
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Evaluation of Antibacterial Properties of Guava, Jambolan, Ber, and Lakshmi taru Leaves
Abstract: Plants have always attracted the scientist’s world over as potential agents for various therapeutic activities and they are constantly explored to find out novel therapeutic components. In this regard, the current review summarizes the studies done on certain selected plants to look for their antibacterial properties. The plants selected are Guava (Psidium guajava), Jambolan (Syzygium cumini), Ber (Zizyphus mauritiana), and Lakshmi taru (Simarouba glauca) leaves. Over the years, the antibacterial …
Published in Research and Reviews: A Journal of Toxicology · Vol. 13, Issue 1, 2023 · pp. 26–31 Read article
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High-Performance Biodegradable Films from Bamboo Derived Cellulose Nanofibers and Silk Fibroin: Engineering Sustainable Polymer Composites
Abstract: This research presents the advancement of biodegradable composite films from cellulose nanofibers (CNFs) extracted from bamboo and silk fibroin (SF) derived from Bombyx mori cocoons. CNF/SF composites were fabricated in three different compositions—CS10, CS30, and CS50—via aqueous blending and solution casting, followed by ethanol-induced β-sheet stabilization. Mechanical testing confirmed a considerable enhancement in tensile strength from 72 MPa (CS10) to 112 MPa (CS50), while Young’s modulus improved from 2.4 GPa …
Published in Journal of Polymer & Composites · Vol. 13, Issue 4, 2025 · pp. 256–265 Read article
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Experimental Studies on the Passive Capillary Flow of Non-aqueous Working Liquids in PMMA Microfluidic Devices of Rectangular Cross-Sections
Abstract: The polymethylmethacrylate (PMMA) microfluidic devices are fabricated by the maskless lithography, hot embossing lithography and direct bonding technique. The effects of liquid viscosity, surface wettability and channel aspect ratio on the surface-driven capillary flow of non-aqueous working liquids are studied in the fabricated PMMA microfluidic devices. The working liquids are ethylene glycol, isopropyl alcohol (IPA) and ethanol. These experimental studies will be useful to manipulate different non-aqueous working liquids inside …
Published in Journal of Polymer & Composites · Vol. 5, Issue 2, 2017 · pp. 29–33 Read article
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The Effect of Alcoholic, Aqueous and Crude Extracts of Lemon citrus Seeds on Staphylococcus and Klebsiella Bacteria
Abstract: Five isolates of staphylococcus bacteria identified by phytic were obtained and activated on solid saline mannitol medium, where the colonies appeared in a golden color. Three extracts of dry lemon seeds were prepared (raw, 1% aqueous extract, 1% alcoholic extract). It was celebrated that the aqueous quotation was added operative on bacterial progress than the alcoholic and rudimentary sources. Three isolates of Klebsiella bacteria identified by VITEK were also obtained, …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 14, Issue 3, 2024 · pp. 32–36 Read article
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Growth Inhibitory Effects of Centella asiatica Extracts on Escherichia coli
Abstract: Plant secondary metabolites have been known for their varying degrees of antimicrobial activity. These form important constituent of traditional medicine. The present study aims to analyze the antibacterial effects of the Centella asiatica extracts by looking into the growth inhibitory effects of organic and aqueous extracts of the leaves on Escherichia coli bacterium and to identify the secondary metabolites present in the extract by phytochemical analysis. The leaf extracts of …
Published in Research and Reviews: A Journal of Microbiology and Virology · Vol. 9, Issue 2, 2019 · pp. 1–7 Read article