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1603 articles for “structure”
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Revolutionizing Nanoparticle’s Synthesis Through Green Chemistry: A Brief Review
Abstract: Abstract Nanotechnology has experienced remarkable strides in response to the pressing need for environmentally friendly synthesis routes, with a paramount focus on minimizing deleterious by-products. This paradigm shift has galvanized researchers to delve into green biotechnology alternatives, harnessing the potential of plant extracts to reduce metal ions efficiently and yield green nanoparticles. These resultant nanoparticles not only showcase significant potential as antimicrobial agents but also hold profound implications for advancements …
Published in International Journal of Green Chemistry · Vol. 9, Issue 2, 2023 · pp. 26–37 Read article
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Investigation on Synthesis and Evaluation of Nanopore NaA Zeolite Membranes
Abstract: Effects of synthesis parameters on the membrane structure and performance have been investigated for nanopore NaA zeolite membranes grown onto seeded mullite supports. Molar composition of the starting gel of nano NaA membranes was: SiO2/Al2O3=0.8–3.2, Na2O/Al2O3=1.6–4.6, and H2O/Al2O3=50–200. Also, effects of crystallization time and temperature on the membrane performance were studied. X-ray diffraction (XRD) patterns of the membranes exhibited peaks corresponding to the support and the zeolite. The crystal species …
Published in International Journal of Analytical and Applied Chemistry · Vol. 3, Issue 2, 2017 · pp. 9–22 Read article
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MANUFACTURING PROCESS FOR RUBBER CHEMICALS ESPECIALLY -one -amine, & -ol.
Abstract: Indian rubber industry has much positive strength, the chemicals which is used in rubber industry has increased due to increase rubber production. The manufacturing of rubber chemicals requires extensive process. A broad spectrum of chemicals numbering into the hundreds and encompassing many structural and use categories are employed in the rubber industry for a multitude of applications. Additives can thus be classified according to their functions which include: vulcanizing agents, …
Published in International Journal of Analytical and Applied Chemistry · Vol. 4, Issue 2, 2018 · pp. 42–51 Read article
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Theoretical Study of Polymers
Abstract: The chemistry of polymer is typically referred to the context of preparation of organic compositions. The preparation of polymers are ubiquitous in commercial materials and products in everyday use and are commonly referred to as plastics and rubbers, and are major components of composite materials. The chemistry of polymer can also be involved in the broader fields of polymer science or even nanotechnology, each of which can be described as …
Published in International Journal of Analytical and Applied Chemistry · Vol. 5, Issue 2, 2019 · pp. 7–11 Read article
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CORROSION RESISTANCE OF BINARY AND TERNARY ALLOY COATINGS FROM ACID SULPHATE BATH
Abstract: Electroplating of three binary (Zn-Ni, Zn-Co and Zn-Fe) and two ternary (Zn-Ni-Co and Zn-Co-Fe) alloy coatings were developed onto mild steel substrate using 2-((4-chlorophenyl) amino)-1-(6-methyl-1H-pyrazolo [3, 4 - b] quinolin-1-yl) ethanone (CME) as an additive. Hull cell technique was used to optimize the bath constituents and operating conditions. Corrosion rate of binary and ternary alloy coatings were determined using potentiodynamic polarization method. Corrosion rate of ternary Zn-Ni-Co alloy coating was …
Published in International Journal of Analytical and Applied Chemistry · Vol. 6, Issue 2, 2020 · pp. 12–16 Read article
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Review in Stages of Development of Coronavirus Vaccines
Abstract: The COVID-19 vaccine is a biotechnology product designed to provide acquired immunity againstcoronavirus disease 2019 (COVID-19). As of September 2020, (320) candidate vaccines are indevelopment, a (2.5) -fold increase since April, and none of them have completed clinical trials toprove their safety and efficacy. In September, about (35) vaccine candidates were in clinical research,(30) of which were in Phase I and II trials, and 6 were in Phase II and …
Published in International Journal of Analytical and Applied Chemistry · Vol. 7, Issue 1, 2021 · pp. 17–25 Read article
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Bacterial Exopolysaccharides and Their Applications: A Short Review
Abstract: Extracellular polymer substances (EPS) are metabolic products of bacteria which accumulate on thecell surface and serve as a protective layer against harsh environmental condition. EPS also serve asa source of energy during the starvation of bacteria. The major structural component of EPS ispolysaccharide, commonly known as exopolysaccharide, is either neutral or polyanionic in nature.Polysaccharides in EPS found different in sugar compositions and moieties, chain length, repeatingunits and substitutions in the …
Published in International Journal of Analytical and Applied Chemistry · Vol. 7, Issue 1, 2021 · pp. 40–46 Read article
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Macro-compounds and Macro-cycles with Their Applications
Abstract: Macro-compounds represent an ancient class of compounds that enter into coordination chemistry as a ligands such as (crown ethers, aza, thia and others), or in the field of organic chemistry through large cyclic compounds such as porphyrins, vitamins and others, where corona ethers are strongly linked with specific cations forming coordination complexes, In which the oxygen atoms occupy positions suitable for coordination with a cation located inside the ring, and …
Published in International Journal of Analytical and Applied Chemistry · Vol. 7, Issue 2, 2021 · pp. 1–12 Read article
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Short Review on Passive Capillary Flow in Microfluidics with an Experimental Demonstration about the SU-8 based Microfluidic Device
Abstract: In this experimental work, a single SU-8 based glass microfluidic device is fabricated by maskless lithography and indirect bonding technique. The surface-driven microfluidic flow of dyed water is recorded in the fabricated SU-8 device. Negative photoresist SU-8 is an efficient polymer to fabricate the microfluidic devices. A brief review on surface-driven passive microfluidic flow is provided in this short experimental report towards the applications in microfluidic lab-on-a-chip systems. This short …
Published in International Journal of Analytical and Applied Chemistry · Vol. 8, Issue 1, 2022 · pp. 1–6 Read article
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Overview of Strategies for Flood Control and Risk Management in Nigeria
Abstract: This study presents the strategies for flood control and risk management plan in view to overcome the current menace faced by the people of Nigeria. However, to overcome these, the following flood master plans were set amongst other things to formulate a broad policy framework and milestones for managing floods and stipulate specific strategies for achieving these milestones during the next decade up to 2050. The vision of the plans …
Published in International Journal of Analytical and Applied Chemistry · Vol. 8, Issue 2, 2022 · pp. 41–50 Read article
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SDS-PAGE Electrophoresis for Protein Separation – An Overview
Abstract: Polyacrylamide gel electrophoresis (PAGE) is a critical method useful for separating components of a protein mixture depending on their size. The procedure depends on the principle that a charged particle will migrate in an electric field towards a cathode with inverse sign. The general electrophoresis procedures cannot be utilized to determine the molecular weight of organic particles in light of the fact that the versatility of a substance in the …
Published in International Journal of Chemical Separation Technology · Vol. 3, Issue 1, 2017 · pp. 29–38 Read article
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Protein Peroxidation: The Covalent Modification of Protein Induced Through Reactive Oxygen Species (ROS) and With Secondary By-products of Oxidative Stress.
Abstract: The abundance in biological system and high reaction rate constant are making the proteins as major targets for radicals and two-electron oxidants in biological systems. The multiple side-chain and backbone sites are susceptible for highly reactive radical damage. Less reactive species exhibit greater selectivity with reference to the residues targeted and their spatial location. Modified structure may result in the increased side-chain hydrophilicity, side-chain fragmentation and backbone fragmentation, aggregation through …
Published in International Journal of Chemical Separation Technology · Vol. 5, Issue 2, 2019 · pp. 1–25 Read article
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Crystal Growth, Synthesis and Characteristic Studies of Bismuth Doped Tristhioureazinc (II) Sulpate (ZTS) Crystal
Abstract: Potential semi organic tristhioureazinc(II) sulphate (ZTS), One of the best room temperature growth techniques for nonlinear optical materials with high SHG efficiency is slow evaporation solution growth, which produces pure and single crystals for use in laser technology and photonic applications. Single crystals Doping of Bismuth fluoride (equimolar) to ZTS is done during the crystallization process is further analysed by single crystal XRD which infers that the Bismuth doped ZTS …
Published in International Journal of Chemical Separation Technology · Vol. 9, Issue 2, 2023 · pp. 45–52 Read article
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Magneto-electrodeposition of Sn–Ni alloy Coating for Better Corrosion Protection
Abstract: The present paper reports the development of excellent corrosion resistant Sn–Ni alloy coatings from a new pyrophosphate bath by magneto-electrodeposition (MED) approach. First part reports optimization of conditions for deposition of Sn–Ni coatings on mild steel by conventional electrodeposition (ED) method and their characterization. The second part demonstrates how the corrosion resistance of Sn–Ni alloy coatings can be improved drastically by MED method, using same bath. Significant decrease of corrosion …
Published in International Journal of Chemical Engineering and Processing · Vol. 2, Issue 1, 2016 · pp. 29–42 Read article
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A Customized Wireless Supervisory Infrastructure for Integration and Explicit Multiparametric MPC-Based Control of Laboratory Processes
Abstract: In this study, a custom, embedded wireless (Zigbee) supervisory infrastructure aimed at integration of laboratory processes is reported. A microcontroller based field control unit (FCU) implements closed loop control on experiments via ADAM 5000/485 data acquisition module. Data from the process (sensor/manipulation) are broadcasted from FCU using a wireless access point (WAP). A MATLAB graphic user interface (GUI) updates the data (obtained using a remote monitoring unit (RMU)) graphically. Multiparametric …
Published in International Journal of Chemical Engineering and Processing · Vol. 2, Issue 2, 2016 · pp. 10–18 Read article
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Electrolytic Deposition of Zn–Ni Alloy from Acidic Sulphate Bath and Their Characterization
Abstract: A bath containing ZnSO4.7H2O, NiSO4.7H2O, thiamine hydrochloride (THC) and citric acid (CA) has been proposed. Bright Zn–Ni alloy coatings were developed galvanostatically onto mild steel (MS) and their corrosion resistance and other physical properties were studied. THC was found to improve the brightness and homogeneity of the deposit. The dependency of bath composition, current density (c.d.), pH and temperature, agitation on wt.% Ni were tested. Deposition was carried out under …
Published in International Journal of Chemical Engineering and Processing · Vol. 2, Issue 2, 2016 · pp. 19–32 Read article
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Variations in GCRs with Solar Variability between 1996-2018
Abstract: Abstract The solar outputs and their variability controls by heliospheric structure, produce changes in cosmic ray intensity (high energy charged particles) entre into inner heliosphere. Observation based on the data taken from Omniweb data centre for solar- interplanetary data and monthly mean count rate of cosmic ray intensity (CRI) variation data from Oulu and Moscow neutron monitors during 1996-2018. It is observed that slow decline of solar cycle 23 and …
Published in International Journal of Chemical Engineering and Processing · Vol. 4, Issue 2, 2018 · pp. 43–46 Read article
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Use of Pesticides leads to Environmental degradation
Abstract: Pesticides are extensively used for agriculture but residues can reach aquaticecosystems, frequently. They are transferred from pytoplankton to fish and human, ultimately. Pyrethroid insecticides are utilized in place of organochlorine,organophosphorus and carbonate to control different forms of pests and raise yield. Pyrethroid intoxication causes cellular damage and increases freeradicals, which leads to lipid peroxidation and, ultimately, oxidative stress.To reduce damage to environment and biologicalsystems by pesticides should be played attention …
Published in International Journal of Environmental Chemistry · Vol. 9, Issue 1, 2023 · pp. 75–78 Read article
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Mechanical Studies and Thermal Kinetics of Isoniazid Crystals
Abstract: Single crystals of isoniazid were crystallized by slow solvent evaporation method. The crystal structure was confirmed using single crystal X-ray diffraction analysis. Micro hardness was estimated and work hardening coefficient and Newtonian resistance pressure of the crystal were determined. Kinetic analysis of the thermogravimetric data was carried out by using Coats-Redfern relation. Activation energy, frequency factor and order of reaction were also calculated. Arrhenius equation for isoniazid is k=0.43×105e–79103/RT mol–1s–1. …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 1, Issue 1, 2015 Read article
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Synthesis and Characterization of Cadmium exchanged Sodalite
Abstract: Cadmium derivative of chloro sodalite, has been synthesized at low temperature by hydrothermal method. The sodalite is characterized by IR, X-ray powder diffraction and SEM. The Cd derivative was obtained by facile exchange of cadmium for sodium in chloro sodalite using a solution of cadmium nitrate in Teflon autoclaves at 100oC. The IR spectra of parent gallo silicate chloro sodalite and cadmium exchanged chloro sodalites shows three kinds of IR …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 2, Issue 1, 2016 Read article