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502 articles for “LCMS/MS”
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Sulfated Zirconia Catalyzed Biodiesel Production from Acid Oil Containing High Free Fatty Acids
Abstract: Biodiesel fuel has shown great promise as an alternative to petro-diesel fuel. Biodiesel production is widely conducted through esterification and transesterification reaction, catalyzed by homogeneous or heterogeneous catalysts. In the present endeavour, sulphated zirconia has been prepared using microwave method and characterized by using XRD, FT-IR, BET surface area, SEM and acidity measurement. The utility of synthesized catalyst is demonstrated in catalytic biodiesel production from acid oil feed stock. The …
Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 2, 2017 · pp. 35–45 Read article
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Synthesis of Biodiesel from Biowaste/Vegetable Oil by Using Heterogeneous Nano-Catalyst
Abstract: This paper presents preparation of heterogeneous nanocatalyst (NaOH/ZnO-Li2CO3) for biodiesel synthesis from biowaste/vegetable oil by transesterification. Transesterification is an important reaction that produces fatty acid methyl esters which are excellent substitutes for diesel fuel. Biodiesel production by using nanocatalyst is one of important approaches in the biofuel research. The optimization of transesterification reaction is affected by the catalyst type, reaction temperature, reaction time, methanol to biowaste/oil ratio. The analysis of …
Published in Journal of Catalyst & Catalysis · Vol. 4, Issue 1, 2017 · pp. 11–23 Read article
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Thermodynamic, Kinetic and Mechanistic Investigations of Ruthenium(III) Catalyzed Methylparaben Oxidation by Diperiodatocuprate(III) in Aqueous Alkaline Medium
Abstract: The kinetics of ruthenium(III) catalyzed degradative oxidation of methylparaben by the copper complex, diperiodatocuprate(III) in alkaline medium is studied at 25ºC and at a ionic strength of 8.0 × 10−2 mol dm−3. In the presence of catalyst ruthenium(III), the reaction between methylparaben and diperiodatocuprate(III) in aqueous alkaline medium exhibits 1:1 stoichiometry. The oxidation products were identified by UV-visible, GC-MS and IR spectroscopy. The reaction exhibited unit order in case of …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 1, 2015 · pp. 4–17 Read article
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Mechanistic and Catalytic Behavior of Os(VIII) for the Chlorpheniramine Maleate and Bromamine-B Redox System: A Kinetics Based Approach
Abstract: Chlorpheniramine maleate (CPM) is an important antihistamine agent. To the best of our knowledge there is no report in the literature about the oxidation of CPM with halogen + 1 oxidant from the stand point of its kinetics and mechanistic chemistry. Hence, a systematic kinetics and mechanistic study on the oxidation of CPM with bromamine-B (BAB) in the presence of NaOH and Os(VIII) catalyst has been carried out at 303 …
Published in Journal of Catalyst & Catalysis · Vol. 2, Issue 1, 2015 · pp. 18–31 Read article
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Ru(III)-Catalyzed Oxidative Cleavage of Ritodrine Hydrochloride: A Kinetic and Mechanistic Study
Abstract: A systematic kinetic and mechanistic study of the oxidation of ritodrine hydrochloride (RTH) with chloramine-T (CAT) in both HClO4 and NaOH media has been carried out at 303 K. In acid medium, the reaction rate is very sluggish to be measured kinetically. Ruthenium (III) chloride ([Ru(III)]) was found to be an efficient catalyst. The reaction rate exhibits a first-order dependence on [CAT]0 in both media. It shows a fractional-order on …
Published in Journal of Catalyst & Catalysis · Vol. 1, Issue 1, 2014 · pp. 29–40 Read article
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Study on factors of Waste Minimization Strategies in Construction Projects towards achieving Sustainability
Abstract: There is a great impact on Environmental, Economic and Social Sustainability due to the waste generated from Construction Industry. Hence a study is done to identify the waste minimization strategies to minimize the construction waste and to achieve sustainability of the nation. A Questionnaire was designed from the literature review and the Questionnaire was distributed to construction professionals belonging to Indian Construction Industry. The data collected were analyzed using Statistical …
Published in Journal of Construction Engineering, Technology & Management · Vol. 8, Issue 3, 2018 · pp. 31–41 Read article
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Prototype construction project management information system In ERP software: Performance & Evaluations
Abstract: The Indian civil construction industry is known to be not only inefficient but also highly resistant to change in construction. Even with a changing market of construction industry as well as increasing competition Construction, there are very less obvious signs of commensurate changes in methods and approach. Project management, on the other hand, seems to offer what is needed in terms of tools Equipment, machinery and techniques to raise industry …
Published in Journal of Construction Engineering, Technology & Management · Vol. 10, Issue 2, 2020 · pp. 10–18 Read article
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Multisensor Data Fusion based Intelligent Temperature Measurement Technique
Abstract: Design and validation of a temperature measurement technique using fusion of temperature sensor like resistance temperature detector (RTD), and thermistor is proposed in this work. The objective of proposed work is to design a technique using fuzzy logic algorithms to fuse two different sensors having dissimilar characteristics. A fuzzy logic system is trained to produce an output for a temperature measurement system which is (a) more linear input-output characteristics as …
Published in Journal of Control & Instrumentation · Vol. 5, Issue 2, 2014 · pp. 1–13 Read article
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A Suboptimal Nonlinear Duty-cycle Modulation Scheme
Abstract: The DCM (duty-cycle modulation) technique is increasingly used in industrial electronics applications, including instrumentation systems, interfacing drivers and signal transmission chains. However, in existing research works related to new applications of DCM technique, the linear approximation policy is used for the sake of structural simplicity and low implementation cost, at the expends of rigorous analysis and low approximation errors. In this paper, a suboptimal nonlinear DCM scheme is developed. It …
Published in Journal of Electronic Design Technology · Vol. 7, Issue 1, 2016 · pp. 22–31 Read article
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Probability of Liquefaction induced Ground Failure under the Earthquake Scenario in Kathmandu Valley
Abstract: Kathmandu valley is highly susceptible to liquefaction hazard due to the presence of liquefiable soil up to considerable depth, the presence of shallow ground water table and occurrence of earthquakes at regular intervals. Past studies have also shown the occurrence of liquefaction with examples of observed ejection of sand boil and formation of cracks throughout the valley during 1934 Nepal-Bihar earthquake. Events similar to these were also observed during recent …
Published in Journal of Geotechnical Engineering · Vol. 6, Issue 2, 2019 · pp. 27–38 Read article
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Aluminium Recovery from Incineration and Gasification Bottom Ashes
Abstract: The recovery of ferrous and nonferrous metals from the bottom ashes is a common practice, both for the environmental advantages of their recycle and to avoid problems of swelling and expansion that metals can cause when bottom ashes are reused in concrete production or in road construction. This paper focuses on metal recovery from bottom ashes produced in municipal solid waste (MSW) incinerators, with a particular focus on aluminium. A …
Published in Journal of Geotechnical Engineering · Vol. 2, Issue 2, 2015 · pp. 1–5 Read article
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Web Mapping Comparison of Open Layers Map and Google Map: A Web GIS based Big Spatial Data Approach
Abstract: Big data sharing and manipulation of geospatial data such a GIS web-based system has become a challenge. Due to the rapid development technology in web based geographical information systems, the uses of web based geospatial application, effective utilization and representation varies from Geo-spatial capabilities and functionalities. In this paper, a web GIS framework was explored to provide a practical solution for the display and manipulations of geospatial data, visualization of …
Published in Journal of Geotechnical Engineering · Vol. 2, Issue 3, 2015 · pp. 41–45 Read article
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A study to investigate the shear strength resistance of Ennore sand from conventional direct shear test.
Abstract: In this article analysis of shear strength parameters of Ennore Sand is given using the direct shear test. The shear strength parameters of cohesion and angle of shearing resistance are employed in the construction of geotechnical constructions to describe the soil's ability to sustain shear stress when subjected to a certain load. These might be measured using laboratory or field testing. When shearing a sample in a direct shear apparatus, …
Published in Journal of Geotechnical Engineering · Vol. 9, Issue 3, 2022 · pp. 19–26 Read article
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Effect of Seat dimensions on operator discomfort while operating Forklifts
Abstract: AbstractThe objective of the study is to investigate the body discomfort sensed by the forklift operators in their operation with respect to seat dimensions and determine the discomfort level at various working shift intervals such as the start of the shift, morning break, before lunch, after lunch, afternoon break and end of the shift with the help of Corlett and Bishop’s method of body mapping. A total of 47 operators …
Published in Journal of Industrial Safety Engineering · Vol. 4, Issue 3, 2017 · pp. 24–36 Read article
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To Investigate the Occupational Risk Factors Contributing towards Musculoskeletal disorders among VDT users bank office Employees
Abstract: AbstractThe current business environment is characterized by stiff competition. The players in the industry always strive to come up with innovative strategies to outdo their rivals with a view of enhancing their profitability. Previous studies have indicated that having in place highly effective health and safety systems can enhance the level of productivity of the employees. This always results into an increase in the level of profitability of the organizations. …
Published in Journal of Industrial Safety Engineering · Vol. 5, Issue 1, 2018 · pp. 28–34 Read article
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Design of Dielectric Resonator Antenna (DRA) for 4G LTE Applications
Abstract: AbstractIn this paper, a rectangular Dielectric resonator antenna (RDRA) is presented for 4G long-term evolution (LTE) applications. A metallic stripline feed is used to excite the antenna. A metallic strip line is used to increase the electric length of the port. Rectangular DRA is designed using FR4 substrate material having dielectric constant 4.4 and design is simulated with the help of high-frequency structure simulator (HFSS). Design antenna structure covered the …
Published in Journal of Microwave Engineering and Technologies · Vol. 5, Issue 2, 2018 · pp. 22–27 Read article
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Design and Analysis of Multi Band Patch with Enhanced Bandwidth
Abstract: In this article, a novel lower edge defected multi-band patch with modified ground structure (or Defected Ground Structure-DGS) with enhanced bandwidth has been presented. The bandwidth can be enhanced by defecting the partial ground and by arc truncation of lower edges of the patch. The antenna was converted into multi-band by defecting the lower corners. The antenna is resonating at multiple bands i.e. 3.7 GHz, 7.87 (~7.9) GHz, 12.19 (~12.2) …
Published in Journal of Microwave Engineering and Technologies · Vol. 7, Issue 3, 2020 · pp. 1–8 Read article
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Comprehensive Review and Analysis of Improved Filtering Methodology Based Image De-noising System
Abstract: A digital image is often ruined by noise that comes from the process and equipment used to make it or that is added to the image while it is being sent. Different kinds of noise, like impulse noise, uniform noise, Salt-and-Pepper noise, and additive Gaussian noise, can show up in images. Using a good image de-noising method, noise can be taken out of an image to bring back its details. …
Published in Journal of Microwave Engineering and Technologies · Vol. 9, Issue 2, 2022 · pp. 34–45 Read article
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Analysis of Process Parameters for Dissimilar Metal Welding Using MIG Welding: A Review
Abstract: The base on which automobile engine is placed is called trolley. Trolley is a type of structure in which various support parts like main channel, support channel, shaft-bar, hook angle, handle etc. are connected by using MIG welding process. Trolley has a capacity to place 18 kg engine weight, and is made of two metal parts i.e. mild steel and hot rolled steel (i.e. MS, HR). The paper deals with …
Published in Journal of Materials & Metallurgical Engineering · Vol. 6, Issue 2, 2016 · pp. 38–41 Read article
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Simulation and Experimental Studies on the Effect of Injection Moulding Parameters on Tensile Properties of ABS Thermoplastic Specimen
Abstract: AbstractThe injection moulding process is the most widely used method of manufacturing Engineering thermoplastics. Thermoplastic blends and composites are suitably replacing metals and ceramics in most circumstances. This trend is mainly due to the versatility and compatibility of the injection moulding process. However, the injection moulding conditions has a significant impact on the aesthetic and functional characteristics of the final product as the flow induces substantial variation in the properties …
Published in Journal of Polymer & Composites · Vol. 3, Issue 2, 2015 · pp. 1–10 Read article