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868 articles for “Aging”
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Multivariate modeling of mineral water Karachi, Pakistan
Abstract: In last few decades the demand of mineral water has increased and is very important for human life due to shortage of pure and clean water. The mineral water is produced by various companies with different names and brand with approval of the relevant authorities. The present study was carried out for the preconcentration and determination of trace amount of metals (Cd, Cu, Pb, Fe, Mn, Ni, and Zn) from …
Published in International Journal of Environmental Chemistry · Vol. 5, Issue 2, 2019 · pp. 49–59 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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Effective Utilization of Agricultural Waste for Removal of Heavy Metals from Waste Streams
Abstract: The progress of industrialization and urbanization poses a great threat to the comfort of people's lives. The production and disposal of large amounts of toxic pollutants have severely polluted our environment. The most hazardous contaminants in soils and surface waters include some organic compounds, like synthetic dyes (SD) and toxic substances (heavy metals). It is of great interest worldwide due to its toxicity to many organisms. An important topic is …
Published in International Journal of Environmental Chemistry · Vol. 8, Issue 2, 2022 · pp. 1–11 Read article
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A Review on Potential Uses and Characterization of Okra Fiber Reinforced Polymer Composites
Abstract: The environment, ecology, and new rules from the government agencies are major concerns in the quick-paced society. As a result, scientists and researchers are searching for natural fiber reinforced composites that are biodegradable and renewable. Natural fibers have undeniable advantages over synthetic fibers, including low density, equivalent strength, non-toxicity, low cost, and minimal waste disposal issues. The possible uses of natural fibers have been thoroughly investigated by researchers. But in …
Published in International Journal of Environmental Chemistry · Vol. 8, Issue 2, 2022 · pp. 22–33 Read article
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Green Synthesis of Nickel(II) and Zinc(II) Complexes of Bis(Imine) Schiff base Derived from o-vanilline and m-phenylenediamine.
Abstract: The synthesis of Schiff base ligand derived from aromatic aldehyde (o-vanillin) and m-phenylenediamine via liquid-assisted mechanochemical synthesis (LAG) in the presence of small amount of dimethylformamide were reported. The Schiff base complexes of Ni(II) and Zn(II) were also synthesized mechanochemically and characterized using infra-red spectroscopy, thermogrametric analysis, energy dispersive x-ray analysis, powder x-ray diffraction, UV-Visible analysis, conductivity measurement, magnetic susceptibility measurement and CHN, micro-analysis. Infrared spectral study indicated a strong …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 6, Issue 1, 2020 · pp. 31–43 Read article
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REVIEW ON PREPARATION & APPLICATIONS OF THIADIAZOLE DERIVATIVES
Abstract: This review has touched on thiadiazole derivatives as it is a basis for the synthesis of many drugs, industrial compounds, chemical dyes, pharmaceuticals and life substances, and as a link to many cyclic reactions and is produced in vitro methods for the hydrolysis of the amine-thiol compounds such as thiosemicarbazide and hydrazo-thion, among others. On the different methods of preparation for thiadiazole derivatives, its reactions and its various biological applications., …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 6, Issue 1, 2020 · pp. 19–30 Read article
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The Improvement of Polyvinyl Chloride Synthesis Using Different Approaches
Abstract: Polyvinyl chloride (PVC) is produced by the polymerization of the vinyl chloride monomer either by direct chlorination of olefins or by addition of hydrogen chloride to acetylene. The polymerization conditions are: heat, peroxides or oxidizing agents with basic structure as -CH2CHCl.CHCl-CH2.CHCl-. Polyvinyl chloride is a thermoplastic and its plasticity can be increased by incorporating ‘plasticizers’ of relatively low molecular weight organic materials during molding or extrusion. PVC has high hardness …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 6, Issue 2, 2020 · pp. 48–52 Read article
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Green Chemistry Approach for the Preparation of Silver Nanoparticles: A Review
Abstract: The word "nanoparticles" refers to particles within a size range of 10 and 100 nm. Nanotechnology is the topic that is growing the fastest because of its applications in science and technology to produce new at the nanoscale range. Silver is the metal of first preference among the various noble metals. The production of silver nanoparticles can be achieved by different methods such as: chemical method, biological method, green synthesis. …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 9, Issue 1, 2023 · pp. 30–39 Read article
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Synthesis of Nanoparticles from Plant Extract
Abstract: Green nanoparticle manufacturing has several applications in the environmental and medical fields. Green synthesis, in particular, aims to decrease the usage of harmful chemicals. The use of biological components like plants, for example, is generally thought to be safe. Plants also contain reducing and capping agents. This chapter covers the fundamentals of green chemistry as well as a review of plant-mediated nanoparticle synthesis and current applications. Nanoparticles include gold, silver, …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 9, Issue 2, 2023 · pp. 1–9 Read article
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Modern Approach for Sustainable Energy Conservation
Abstract: Sustainable Energy conservation is becoming a topic of great discussion day by day. In developing countries such as India, energy conservation is a big necessity for fulfilling the increasing demands owing to the huge population which is increasing at an exponential rate. Green chemistry is a novel and highly useful technology, initially introduced by the US government agency during the early 1990’s for conservation. It implies strategies and varying approaches …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 3, Issue 1, 2017 · pp. 24–25 Read article
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Sustainable Development and Renewable Energy in India through Education
Abstract: In this paper we have to discuss about the sustainable development and renewable energy in India through education. This research was featured to perceive in our time is how to sustain our study. It also discusses the multiple difficulties that may be had to face in the course of teaching out to the goal spectator. There has been overhauling of teacher education programmes across the land, Hence it is essential …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 7, Issue 2, 2021 · pp. 11–16 Read article
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Management of Technology –Theory and Practice
Abstract: Successful companies often link engineering, science, and management disciplines to develop and enhance their technological capabilities to achieve their strategic objectives besides giving competitive advantage to themselves on the basis of proprietary knowledge and know-how. As a result, they are making judicious use of technologies in launching their products in the market. This study is based on the theory of technological change process, which was developed by the ideas of …
Published in International Journal of Construction Engineering and Planning · Vol. 2, Issue 1, 2016 · pp. 34–46 Read article
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Business Process Re-engineering-Re-Aligning Processes for Market Leadership in Changing Business Environment
Abstract: Business environment of a firm is often characterized by a change and instability due to launches of new products and technologies by rival companies, changes in government policies, and on account of factors related to globalization and shifting consumer preferences. As a result of interaction between these complex factors, business outlook and the existing business models of established companies as well as other upcoming companies are affected. Companies are thus …
Published in International Journal of Construction Engineering and Planning · Vol. 3, Issue 2, 2017 · pp. 39–59 Read article
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Study of the Effect of Water Retarding Concrete Admixtures on the Properties of Concrete
Abstract: Water retarding concrete admixtures and super plasticizer are extensively utilized to recover the structural and mechanical properties of fresh and hardened concrete. These admixtures are more regularly used in pre-stressed concrete, slim components with overfilled and densely filled reinforcement, beams and slabs pre-cast basics and long slender column. In current decades, marvelous success has been attained in the progression of chemical admixtures for Portland cement. Most efforts have concentrated on …
Published in International Journal of Construction Engineering and Planning · Vol. 4, Issue 1, 2018 · pp. 10–14 Read article
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Implementation of Airport Construction Management
Abstract: In this article, Micro PAVER is used to analyze present condition of Neil Armstrong airport facilities. It also predicts the future condition and develop ways for pavement maintenance based on available funds and conditions. The airport infrastructure system is divided into several networks, branches, sections, sample units and the types, severity of distresses are identified for those units. Weather, traffic and maintenance are considered to develop prediction model for pavement …
Published in International Journal of Construction Engineering and Planning · Vol. 5, Issue 2, 2019 · pp. 64–75 Read article
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Impact of Sugarcane Molasses on Compressive Strength and Workability
Abstract: Molasses used as admixture increase the workability, it is a by-product of sugar industry. In this study, mechanical property such as compressive strength and workability of concrete adding fly ash and sugarcane molasses has been investigated. Adding the molasses in concrete increase the compressive strength, delay the initial and final setting time, reduced the bleeding and segregation of concrete and decrease the W/C ratio. The compressive strength test results showed …
Published in International Journal of Construction Engineering and Planning · Vol. 6, Issue 1, 2020 · pp. 1–5 Read article
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SUMMERIZING STRUCTURE AND FUNCTION OF FORMWORK IN MULTI STORIED RCC BUILDING
Abstract: The formwork system of floor slab is an important element in construction of multi-storied RCC buildings which governs the duration and cost of construction. The formwork and shoring structure does not extend to the foundation after the first few slab levels. Generally the formwork and back propping of one or two levels is provided. The research articles give insight on various technical parameters (slab shore load distribution, age of concrete, …
Published in International Journal of Construction Engineering and Planning · Vol. 8, Issue 1, 2022 · pp. 1–8 Read article
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Evaluation of Green Rating System for Building
Abstract: Civil Industry is a rapidly growing industry in this is due to the country's huge economic, social, and infrastructural development. This development of the construction industry leads to a negative impact on the environment and harms human beings. Hence, to reduce this the concept of ‘Green Building Technology is put forward in recent years. Green Building Technology is a rating system adopted worldwide which provides unique guidelines to make construction …
Published in International Journal of Construction Engineering and Planning · Vol. 9, Issue 1, 2023 · pp. 39–45 Read article
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Re-Characterization of Strength Properties of Asphalt Concrete Mixtures Using Non Bituminous Modifier – Candle Wax
Abstract: Improving the performance of asphalt concrete mixtures synonymous with flexible pavement has been a major concern in highway engineering. However, design of flexible pavement begins with proper material characterization to ensure that designs are appropriate. It is also pertinent to say that sometimes if not most times the properties of the individual materials that make up the pavement structure falls short of desired expectations. This has led to exploring techniques …
Published in International Journal of Concrete Technology · Vol. 2, Issue 1, 2016 · pp. 30–36 Read article
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Study on Partial Replacement of Cement by Bagasse Ash in Cement Concrete
Abstract: Today, researchers all over the world are trying to utilize agricultural wastes like corncob ash, rice husk ash, bagasse ash as a partial replacement of cement, thereby reducing cement production and greenhouse gases emissions. Sugarcane bagasse is a fibrous waste product of sugarcane refining industry and being disposed to open landfills causing serious environmental impacts. In this study, Bagasse ash was partially replaced in the ratio of 0%, 5%, 10%, …
Published in International Journal of Concrete Technology · Vol. 4, Issue 1, 2018 · pp. 29–35 Read article