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147 articles for “Coupling”
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Nanocomposite Hydrogels for Water Purification
Abstract: DNA hydrogels have been demonstrated as versatile catalysts, potential adsorbents, sensors and immobilization carriers of bioactive molecules. They are a type of tenuous, semiflexible polymeric network that consists of precisely designed synthetic nucleotide strands as chemical or physical cross-linkers. Hydrogels have been widely studied due to their improved physicochemical properties and used as antibacterial platforms, wastewater pollutants, adsorbents and drug deliverers. Because of their biocompatibility and the ability to mix …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 4, Issue 2, 2018 · pp. 17–21 Read article
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Tuning Superconductivity in ABO3 Type Multiferroic Nanocrystals
Abstract: We present a suitable ways for tuning superconductivity in type multiferroics nanocrystals. It is seen that as a smart materials, multiferroics nanocrystals present distinguishing properties including ferroelectricity, piezoelectricity, ferrotoroids, magneto electrics and ferromagnetism. The reasons for the existence of multiferroicity are interactions of photons with these analytic molecules, electron doping and crispr, which adds or alters the electronic, optical and magnetic properties dramatically. It is clarified that the existence of …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 9, Issue 1, 2023 · pp. 5–17 Read article
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DESIGN AND IMPLEMENTATION OF A SMART FARM MANAGEMENT SYSTEM
Abstract: Agriculture is a sector of a very high importance and should be given attention because it does not only make means of living, the provision of food to sustain and also contribute to economical and national development. Although, the output produced by farmers is high in our country, Nigeria, farmers are still confronted with a couple of problems such as poor irrigation and water management system, poor record of Agricultural …
Published in International Journal of Agrochemistry · Vol. 6, Issue 2, 2020 · pp. 22–28 Read article
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Green or Green Desserts ?
Abstract: Human started agriculture around 9500 BC. Since then many agricultural techniques were adoptedand abandoned. Today’s agricultural technique is completely different from when it was started orsome hundreds of years ago. Even though agriculture practices are dangerous for environment. Sinceancient time, forests were cut down to cultivate, and now extreme use of land for agriculture made itlose its fertility, and causing land go barren. Here, in this paper, we have discussed …
Published in International Journal of Agrochemistry · Vol. 7, Issue 1, 2021 · pp. 1–6 Read article
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Solid state Acid–Base Reactions of Arylamino Nicotinic Acids: X-ray Crystal Structures of Salts
Abstract: 2-(Phenylamino)nicotinic acid (PNA), 2-(methyl(phenyl)amino)nicotinic acid (MPNA), 2-(p-tolylamino)nicotinic acid (TNA) and 2-(methyl(p-tolyl)amino)nicotinic acid (MTNA) are the ampholites which were synthesized by the coupling of respective aryl amines and 2-chloronicotinic acid in the presence of p-tolylsulfonic acid and pyridine. All these molecules were crystallized in different solvents to obtain intra and intermolecular proton transferred adducts in the solid state. TNA is an only compound which has under gone intra (zwitterion) and intermolecular …
Published in International Journal of Analytical and Applied Chemistry · Vol. 1, Issue 2, 2015 · pp. 1–11 Read article
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A New Spectrophotometric Method for the Determination of Psilocin and Psilocybin
Abstract: A rapid new spectrophotometric method is developed for the determination of psilocin and psilocybin using the oxidative coupling reaction with 3-methylbenzthiazolinone-2-hydrazone. The method is precise and accurate. It can be applied to the estimation of psilocin and psilocybin in forensic exhibits. Keywords: 3-methylbenzthiazolinone-2-hydrazone, psilocin, psilocybin, spectrophotometry
Published in International Journal of Analytical and Applied Chemistry · Vol. 3, Issue 1, 2017 · pp. 1–8 Read article
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A Sensitive Spectrophotometric Method for the Determination of Diazepam with MBTH
Abstract: A sensitive, specific spectrophotometric method for the determination of diazepam in bulk drug and formulations has been developed. The diazepam is hydrolyzed to yield 2-Methylamino-5- chlorobenzophenone which is coupled with 3-Methyl benzthiazolinone-2-hydrazone, in the presence of ceric ammonium sulphate as an oxidizing agent, to yield a blue colored solution having an absorbance maximum at 585 nm. It obeys Beer’s law in the concentration range of 0 – 4 µg / …
Published in International Journal of Analytical and Applied Chemistry · Vol. 3, Issue 2, 2017 · pp. 1–8 Read article
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Turn-On” Fluorescence Sensing of Bilirubin Using Water-Soluble Conjugated Polymer
Abstract: Early detection of bilirubin is important to detect jaundice and hepatitis disease at the early stage. Currently, there is no fast method available to detect bilirubin level directly in the presence of crucial interference. This report presents a novel water-soluble poly(fluorenes-alt-benzothiadiazole) for turnon sensing of bilirubin in water and human blood serum. The probe is the water-soluble conjugated polymer poly(fluorenes-alt-benzothiadiazole) functionalized with a D-glucuronic acid named PF-BTGlcA. D-glucuronic acid acts …
Published in International Journal of Analytical and Applied Chemistry · Vol. 7, Issue 2, 2021 · pp. 13–20 Read article
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Numerical investigation of hydrodynamics of batch crystallizer
Abstract: In this work, hydrodynamics in a draft tubebatch crystallizer is analysed computationally using Computational fluid dynamics (CFD). The CFD simulations are performed using multiple reference frame (MRF) with sliding mesh approach in transient condition for flow time of 5s using the standard k-ε turbulence model. The flow-field in batch crystallizer is quantified by calculating time averaged velocity profiles along the horizontal line and by analysing the temporal variation of liquid …
Published in International Journal of Chemical Engineering and Processing · Vol. 3, Issue 1, 2017 · pp. 24–35 Read article
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Comparative analysis of low and high pressure water electrolysis using nuclear waste heat for sustainable hydrogen production in India
Abstract: Hydrogen has been proposed as a clean and sustainable vector of the decarbonized energy system of the near future. Generation of hydrogen gas from a relatively easily available resource like water through low temperature water electrolysis is a simple, technologically mature alternative for realizing the vision of hydrogen economy. This work examines the techno-economic feasibility aspects of a water electrolysis based hydrogen production plant when coupled with typical nuclear power …
Published in International Journal of Chemical Engineering and Processing · Vol. 4, Issue 1, 2018 · pp. 1–20 Read article
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Development of dynamic model for alkaline water electrolyser: Application to disturbance analysis
Abstract: A dynamic model of an alkaline water electrolyser plant has been developed to study its time dependent behaviour when it is subjected to dynamically varying inputs like changing electrolyte flow, inlet temperature, pressure, current, voltage. Such dynamic conditions are expected to arise during start up and shut down and also when the electrolyser is coupled to a nuclear or renewable electricity source, both of which exhibit time dependent power output …
Published in International Journal of Chemical Engineering and Processing · Vol. 5, Issue 1, 2019 · pp. 11–23 Read article
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Nuclear Cogeneration Projects in India : An Assessment of the Current Scenario and Future Prospects
Abstract: Desalination of sea water through thermal and membrane based techniques and production of hydrogen through low temperature water electrolysis at facilities co-located with nuclear power plants are two areas identified for deploying co-generation projects in India in the near term. Nuclear desalination meets the requirements of clean drinking water in and around the nuclear facility, as well as to the in-house demand for high purity water for steam generation and …
Published in International Journal of Chemical Engineering and Processing · Vol. 5, Issue 2, 2019 · pp. 69–89 Read article
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A Review on the Multiscale Integrated Approach in Multiphase Reaction Engineering and Process Intensification: Sustainable Energy and Process Design
Abstract: Abstract: Multiphase reaction engineering and process is important path for conversion of natural resources into fuels and chemicals to reduce greenhouse gas emission and increasing energy supply to meet growing global demand. This requires multiphase reactor design and modeling development for methane conversion into chemical building blocks, upgrading heavy oil and carbon capture. This multiphase reactor modeling involves the multiscale approach, which requires the knowledge of how phenomena at a …
Published in International Journal of Chemical Engineering and Processing · Vol. 6, Issue 2, 2020 · pp. 18–26 Read article
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Determination of Poly Chlorinated biphenyls in sediment of Trondheim fjord (Norway) and Lake Tana (Ethiopia) using pressurized liquid extraction (PLE) and Gas Chromatography – Mass Spectrometry (GC-MS).
Abstract: The presence of polychlorinated biphenyls (PCBs) in the environment is of great concern, as they are compounds that are hazardous to the environment and human health. Environmental investigations of PCBs can be challenging as they are found in trace amount, thus, it is important to have a reliable method for the determination of PCBs in environmental samples. In this work, an analytical method for the determination of PCBs in marine …
Published in International Journal of Environmental Chemistry · Vol. 5, Issue 2, 2019 · pp. 1–10 Read article
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Short Report on Capillary Motion of Dyed Ethylene Glycol for Application towards the Gas Flow in Microfluidics
Abstract: In this experimental report, a couple of SU-8 based glass microfluidic devices are fabricated bymaskless lithography and indirect bonding technique. Each device is tested by the prepared dyedethylene glycol as working liquid. The microfluidic-leakage is recorded in the surface-drivencapillary motion of dyed ethylene glycol due to improper indirect bonding technique. The leakagefreesurface-driven capillary motion of dyed ethylene glycol is recorded due to proper indirectbonding technique. This experimental work is performed …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 7, Issue 1, 2021 · pp. 13–16 Read article
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Nuclear waste heat and renewable energy derived hydrogen: Preliminary feasibility analysis
Abstract: Hydrogen, a possible carbon free energy resource of the future, can be obtained in a sustainable manner from abundantly available resource like water through low temperature, low pressure water electrolysis. This work examines the techno-economic feasibility aspects of a water electrolysis based hydrogen production plant of capacity 1000-10000 Nm3/hr, when coupled with a typical nuclear power plant in India and renewable energy resources in novel ways. The nuclear waste heat …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 4, Issue 2, 2018 · pp. 7–31 Read article
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CFD-subset-FVM-based MATLAB-simulation of Heat Transfer in High Grade Cold Storage Augmenting Cryogenic Energy Storage System by Circulating Natural Gas as Working Fluid : Conceptual Review
Abstract: Abstract. Cryogenic Energy Storage (CES) improves power grid with renewable intermittent power sources. In CES, off-peak excess electricity liquefies air or natural gas. Cryogen is stored in large dewar tanks for long periods of time. Whenever electricity need is in peak, work is recovered from cryogen by a power cycle using waste heat. Many researchers focus on liquid air energy storage (LAES). But, natural gas is promising working fluid for …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 5, Issue 2, 2019 · pp. 1–5 Read article
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Techno-Economic Analysis of Packed Bed Type Thermal Batteries for Surplus Renewable Energy Storage
Abstract: Low carbon electricity from renewables will form the bed rock of the energy transition necessary for climate change mitigation. However, variable renewable generators suffer from intermittency and variability – there can be large surplus power available at times which cannot be dispatched to the grid. At many times, the practice is to curtail surplus renewable output, which is wasteful and not economic. There are also phases when generation is not …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 9, Issue 2, 2023 · pp. 14–21 Read article
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Developments of Glass-Ceramics in Modern Scenario
Abstract: This article is a study on glass science and methods to achieve esteem. Synthetic protocols has been implacable secure to obtain glass-ceramic properties. First glass-ceramic capability has been introduced by Stookey in 1950s’. His excellence has reticulated control on devitrification of glass by adding nucleating agent i.e. TiO2 in 1960s’. Extendable pursue has rated score depending on sinter philosophy on glass-ceramics as well former scripture that has been etiquette of …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 7, Issue 2, 2021 · pp. 23–31 Read article
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Using Pavement Automated Monitoring System in Prioritization of Maintenance Decisions
Abstract: The road transportation system greatly affects the development of economy and social activities for the country. However, pavement maintenance and rehabilitation may be extremely costly and require a lot of funds and resources. Therefore, it is essential to spend these funds in an optimal way. In recent years, the major challenge that have faced most of highway management agencies in Iraq is how to preserve the road network at an …
Published in International Journal of Construction Engineering and Planning · Vol. 1, Issue 1, 2015 · pp. 1–13 Read article