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475 articles for “Preparation”
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Review on Antioxidant Evaluation of 1,2,3-triazole Derivatives Synthesized by Click Chemistry
Abstract: In this review, an important method for preparing 1,2,3-triazole from a simple reaction is considered within the topic of green chemistry, which is the reaction of the click chemistry of the azide-alkyne cycloaddition reaction in the presence of copper as a catalyst. This reaction is characterized by the preparation of 1,4 disubstituted 1,2,3-triazoles with a single isomer without the use of high temperature and by using a non-hazardous solvent and …
Published in International Journal of Green Chemistry · Vol. 7, Issue 1, 2021 · pp. 42–69 Read article
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Production of Waste Animal Bone as a Heterogeneous Solid Base Catalyst for Transesterification of Jatropha Oil
Abstract: Heterogeneous catalyst plays a vital role in transesterification process, especially in view of cost and reusability. In this study, heterogeneous solid base catalyst was prepared by impregnating the waste animal bone with different weight percent (wt%) KOH solution followed by drying and calcination at 900 °C for 3 hr. Having screened the catalytic performance and basicity of animal bone loaded with different K-compounds, 12 wt% KOH loaded on animal bone …
Published in International Journal of Chemical Separation Technology · Vol. 5, Issue 1, 2019 · pp. 28–48 Read article
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ADSORPTION OF POLLUTANTS FROM EXHAUST GAS USING WASTE MATERIAL DERIVED ACTIVATED CARBON
Abstract: The emission of gas from motor vehicle engine causes pollution to the environment. The emission of motor vehicle contains pollutants such as hydrocarbons (HC), carbon monoxide (CO), oxides of sulfur (SO2), carbon (CO2) and nitrogen (NOx), particulates, etc. In the present work, we prepared an activated carbon from Banana peel. The activated carbon was prepared by carbonizing banana peel in furnace. The resulted carbon was activated by chemical activation with …
Published in International Journal of Chemical Separation Technology · Vol. 5, Issue 1, 2019 · pp. 1–4 Read article
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Applications of Separation of Materials
Abstract: The main aim in our work deals with the preparation of series of new bio compounds that have interesting in bio and biomedical fields, pharmaceutical drugs, medicinal biochemistry and in other fields also. All compounds have wide applications and the prepared bio compounds were prepared through many steps with various conditions like azetidine, imidazole, thiazine, oxazepine , diazepine , tetrazole. The structure of the newly synthesized compounds were monitored by …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 5, Issue 2, 2019 · pp. 20–24 Read article
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Effect of Steel Slag and Quarry Dust on the Flexural Strength of Concrete
Abstract: The effect of quarry dust and steel slag on the flexural strength of concrete has been experimentally studied and reported in this paper. Concrete used was prepared by replacing 75% of steel slag in replacement with sand and replacing cement by 5%, 10%, 15% and 20% with quarry dust. Also, conventional concrete was prepared as reference concrete for comparison. 100-mm cube and 100 mm × 100 mm × 500 mm …
Published in International Journal of Concrete Technology · Vol. 5, Issue 1, 2019 · pp. 8–13 Read article
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Influence of Compaction Technique on Shear Strength of Modified Subgrade Soil
Abstract: The subgrade soil is considered as the foundation for the roadway structure, it is responsible to provide the required stability for the overlaying pavement layers and to limit the deformation due to traffic load repetitions by furnishing homogeneous stress distribution. For poor soil condition, grid reinforcement or Asphalt stabilization techniques are usually implemented to control the deformation and improve shear strength of poor granular subgrade soil. In this work, the …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 4, Issue 1, 2018 · pp. 17–25 Read article
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Correlating the Strength Parameters of Rubber Modified Asphalt Concrete
Abstract: Building verified models can help in predicting performance characteristics of asphalt concrete and saving time and money. An attempt has been made in the present investigation to prepare asphalt concrete mixtures for wearing course. Crumb rubber was implemented to prepare modified asphalt binder, which was obtained from Nasiriyah, Erbil, and Dourah oil refineries. Asphalt concrete specimens of control and rubber modified binder have been prepared and tested for Marshall stability, …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 7, Issue 1, 2021 · pp. 15–20 Read article
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Surface-Driven Capillary Flow of Dyed Working Liquid in the SU-8 based Glass Microfluidic Device Fabricated by Maskless Lithography and Indirect Bonding Technique
Abstract: A single SU-8 based glass microfluidic device is fabricated by the maskless lithography and indirect bonding technique, using the negative photoresist SU-8. Polymethylmethacrylate (PMMA) dissolved in EC solvent (SU-8 developer) is used as the prepared adhesive material in the indirect bonding technique. Dyed water (90% red coloured food dye, 10% distilled water) is prepared as the working liquid. A CMOS camera catching 25 frames per second with a corresponding time-scale …
Published in International Journal of Microelectronics and Digital integrated circuits · Vol. 4, Issue 2, 2018 · pp. 26–31 Read article
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Design and Evaluation of Ethionamide as Dry Powder Inhaler for Pulmonary Administration
Abstract: Ethionamide nanosuspension was prepared using Tween-80+ Span-80 as surfactant. Ethionamide nanoparticles were prepared using method known as media milling Method. Method to reduce dose and control frequency. It is further developed as a dry powder inhaler, making it suitable for lung control and the residence time of the drug in the lungs is prolonged. Ethionamide nanoparticles were prepared by ambient grinding method. The freeze-dried and anhydrous lactose-free nanoparticles were mixed …
Published in International journal of Nanobiotechnology · Vol. 9, Issue 1, 2023 · pp. 1–17 Read article
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Thermo-Mechanical Properties of Banana and Jute Fiber Reinforced Polypropylene Composites
Abstract: Abstract Present research aims at finding out better fiber reinforcement for low cost and eco-friendly polymer matrix composite. Polypropylene was chosen as a matrix, while jute and banana fiber were chosen as reinforcement. Composites were prepared by using a hot press machine. Fiber loading was varied at 0, 4 and 8 volume%. Both raw jute and banana fiber was chemically treated with 5 wt% sodium carbonate and composites were also …
Published in International Journal of Composite Materials and Matrices · Vol. 5, Issue 2, 2019 · pp. 37–47 Read article
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Demonstration of Adsorbent Morphology of Different Particle Size for Petroleum Hydrocarbon Treatment in Packed Bed
Abstract: The choice of plantain stem, banana stem and palm oil fibre prepared for treatment of water medium polluted with petroleum hydrocarbon was monitored in a packed bed unit. The raw materials (plantain and banana stem as well as palm oil fibre) were room and sun dried and processed to obtained different particle size of 50, 150 µm and 200 µm. The raw material after processed was used as an adsorbent …
Published in International Journal of Composite Materials and Matrices · Vol. 9, Issue 2, 2023 · pp. 13–19 Read article
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Synthesis of Biodegradable Nano Composite of PMMA vinyl Polymer with Corn Cob
Abstract: Vinyl polymers are the largest category of polymers which have wide applications. PMMA is important vinyl polymer which when modified with with Corn Cob(agricultural waste) for nanocomposite formation, then it may result biodegradable modified polymer. Corn cobs (focal piece of maize) are either treated as waste or consumed as fuel causing ecological concern. So as to accomplish its worth option in new research regions, corn cob can be prepared synthetically …
Published in International Journal of Polymer Science and Engineering · Vol. 6, Issue 1, 2020 · pp. 20–24 Read article
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Breastfeeding in Infants: A Critical Overview
Abstract: Breast feeding is one of the gifts for mother to feed her baby which is ideal food and there is no substitute for breast milk. Breast feeding is to meet the nutritional needs of infant and child. Breast milk is natural readymade food which is most suitable for neonates because of its nutritional value, protection from the infection and provides warmth. After birth of baby till six months of age …
Published in International Journal of Pediatric Nursing · Vol. 7, Issue 1, 2021 · pp. 1–8 Read article
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An Exploratory study to determine the level of Satisfaction among Postnatal mothers regarding nursing care during Antenatal, Intranatal and Postnatal period, admitted in Obstetric & Gynaecological areas of CMC & Hospital, Ludhiana, Punjab
Abstract: A good outcome should be that every woman should be satisfied with the care and support she received during pregnancy, delivery, and postpartum periods, and to feel that she and her baby have been the center of care. The present study was conducted with the purpose to determine the level of satisfaction of postnatal mothers regarding nursing care during antenatal, intranatal, and postnatal periods, and to prepare the guidelines for …
Published in International Journal of Obstetrics, Perinatal and Neonatal Nursing · Vol. 6, Issue 2, 2020 · pp. 55–68 Read article
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Development of Superabsorbent Polymers from Natural Sources
Abstract: Superabsorbent polymers (SAPs) are special materials that can absorb and hold a very large amount of water compared to their own weight. They are commonly used in products such as baby diapers, sanitary items, agriculture, and wastewater treatment. Most of the SAPs used today are made from petroleum-based chemicals. These materials do not easily break down in nature and may cause environmental pollution. Therefore, it is important to develop safer …
Published in International Journal of Metallurgy and Alloys · Vol. 12, Issue 1, 2026 · pp. 25–34 Read article
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Mechanical Response of Cementitious Composites Containing Alkali-Resistant Glass Fiber Reinforcement
Abstract: ABSTRACT Concrete is one of the most widely utilized construction materials because of its excellent compressive strength and long-term durability. Despite these advantages, it exhibits poor tensile strength and is prone to cracking, which can reduce its overall structural performance. To address these shortcomings, the inclusion of fibers in concrete has gained significant attention as an effective reinforcement technique. In this study, the effect of Alkali-Resistant (AR) glass fibers on …
Published in International Journal of Construction Engineering and Planning · Vol. 12, Issue 1, 2026 · pp. 36–44 Read article
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Comparative Study on the Effect of Acidic and Alkaline Mixing Water on Concrete Strength
Abstract: AbstractThe overall performance and durability of concrete are significantly influenced by the quality of water. The strength of the concrete is mostly influenced by the pH of the mixing water, which also affects the hydration process of the cement. This study investigates how different pH levels of water affect the compressive strength of concrete. Three types of mixing water were prepared with pH values of 3.64, 6.90, and 10.21 by …
Published in International Journal of Concrete Technology · Vol. 12, Issue 1, 2026 · pp. 7–15 Read article
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Synthesis, Spectral Study, SEM Analysis and Antibacterial Study of New Indole Azo Ligand and Complexes
Abstract: Azo ligands have developed significantly in recent decades due to their fundamental role in the coordination chemistry of transition elements. Their rapid response to coordination bonding in ligand and complex chemistry, particularly with divalent ions, is a key factor. The azo-bridged bond has played a well-established role in the formation of cobalt, nickel, and copper complexes. In this study, we prepared a novel ligand, an indole derivative bonded to an …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 12, Issue 1, 2026 · pp. 1–10 Read article
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Wettability of carbon fibers with resin matrices from dynamic contact angle measurements
Abstract: Wettability is the property that quantifies the propensity of a solid surface (carbon fiber) to be covered by a liquid (resin). For a wettable solid, the solid-liquid contact is favoured and as a result the liquid spreads on such surface of the solid. Spreading of the liquid on the solid surface is primarily driven by the adhesive forces between the liquid and the solid, while the inter molecular cohesive forces …
Published in International Journal of Composite Materials and Matrices · Vol. 11, Issue 2, 2025 Read article
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Methods for Obtaining Ozone-Resistant Rubber Based on Elastomers
Abstract: Technical Rubber products are one of the main products with the widest range of uses today. To expand the scope of RTM use, it is necessary to increase its varieties. The most demanded rubber products are rubber products with high mechanical strength in contact with ozone. In this work, several polymer mixtures were used to obtain ozone-resistant rubber products. For this purpose, ethylene propylene terpolymer, polyvinyl chloride, and butadiene-nitrile rubber …
Published in International Journal of Polymer Science and Engineering · Vol. 11, Issue 2, 2025 · pp. 1–5 Read article