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480 articles for “LES”
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The Future Prospects of Eco-friendly Green Computing
Abstract: Green computing, also called green technology, is the environmentally sustainable to use of computers and related resources like - monitors, printer, storage devices, networking and communication systems - efficiently and effectively with minimal or no impact on the environment. The principle behind energy efficient coding is to save power by getting software to make less use of the hardware, rather than continuing to run the same code on hardware that …
Published in International Journal of Green Chemistry · Vol. 3, Issue 2, 2017 · pp. 7–14 Read article
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FEATURES, NATURE AND ECONOMIC CONDITIONS OF AZERBAIJAN
Abstract: Natural and economic conditions in Azerbaijan are very complex and peculiar. Up to 60% of the entire territory of Azerbaijan is occupied by mountain and foothill zones, the remaining part (42.8%) - plains and lowlands. The territory of the republic is covered by high mountains, intermountain depressions, valleys, volcanic highlands, which were formed during the geological epoch. On a relatively small territory of the republic there is a whole complex …
Published in International Journal of Green Chemistry · Vol. 4, Issue 1, 2018 · pp. 25–33 Read article
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BATCH TECHNIQUE FOR EXTRACTION OF BIODIESEL FROM VEGETABLE OIL
Abstract: We are living in a high time where we have to keep ourselves safe from the adverse effect of pollution that have on our nature and on the human being also. We see nowadays a very huge extent of pollution, and deaths this pollution and activities related to it causing. It is the need of the hour where we must opt for an alternative which is low on the pollution, …
Published in International Journal of Green Chemistry · Vol. 6, Issue 1, 2020 · pp. 1–4 Read article
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AN OVERVIEW ON ANTICANCER ACTIVITY OF SOME MEDICINAL PLANTS OF HIMALAYAN REGION
Abstract: The conventional treatments of cancer by chemotherapy, surgery, radiotherapy, etc. are difficult and cause adverse side effects. Plants are the prominent source of unique phytochemicals, which provide a novel mechanism to delay the growth or eliminate the neoplastic cells without causing side effects to the normal cells. This review aims to provide an ethnobotanical, phytochemical, and toxicological overview of some of the Himalayan medicinal plants having anticancer properties. The review …
Published in International Journal of Green Chemistry · Vol. 6, Issue 2, 2020 · pp. 9–25 Read article
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Vacuum Dewatering During Concreting: Modern Construction Method
Abstract: In the RCC construction, water–cement ratio is detrimental for concrete. We always try to restrict the water–cement ratio because we want structure achieve its higher strength rather it is necessary for structure life. For the chemical reaction which is generated in cement and water, water–cement ratio of less than 0.38, whereas the adopted water–cement ratio is much more than that mainly because of the requirement of workability. After the requirement …
Published in International Journal of Construction Engineering and Planning · Vol. 3, Issue 1, 2017 · pp. 6–12 Read article
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Effect of Opening Shapes and Sizes on the Gravity Dam
Abstract: Design of gravity dams is an important issue in dam engineering. Opening in the dam plays a vital role in the failure of the gravity dam. In the present work finite element analysis of the gravity dam for different opening shapes and sizes are studied. Koyna dam is considered for the analysis. Study of stress concentration and deformation generated in the dam is conducted in the present work. Two different …
Published in International Journal of Construction Engineering and Planning · Vol. 3, Issue 2, 2017 · pp. 1–8 Read article
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Analysis of Box Culvert with Different Aspect Ratio
Abstract: Box culverts are the default buried structure type, where pipe solutions are not suitable. Their larger openings are often required to provide adequate hydraulic capacity. Box culverts are also frequently used for pedestrian or cattle underpasses. The reinforcement used in concrete box culverts can be either conventional bar reinforcement or welded wire fabric. Welded wire fabric has yield strength slightly larger than conventional bar reinforcement. Standard designs for precast concrete …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 3, Issue 1, 2017 · pp. 32–38 Read article
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Influence of Waste Plastic Dosage on Bituminous Concrete Mix Design Properties
Abstract: Nowadays there is a lot of focus and concern regarding handling waste plastics in order to minimize pollution caused by it to the environment, human life and marine species. Hence to mitigate these problem waste plastics are currently used in the construction of flexible pavements. In the current practices, waste plastics are added to the preheated aggregate which may have a slight improvement in the volumetric property of bituminous mixtures. …
Published in International Journal of Transportation Engineering and Traffic System · Vol. 8, Issue 1, 2022 · pp. 33–39 Read article
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Tomato (Lycopersicon Esculentum Mill.) Yield and Yield Component Evaluation using Bottle Drip Irrigation in Yabello District, Southern Ethiopia
Abstract: Drip irrigation is the most proficient systems in supplying water to plant root but it still allows relatively high evaporation especially in clay soils. Thus identifying the high performing water delivering technology for limited water region is fundamental for high yield and water productivity. Bottle irrigation is more appropriate with not quantified results in these studies in saving water. The trials were replicated three times in RCBD for comprising of …
Published in International Journal of Water Resources Engineering · Vol. 7, Issue 2, 2021 · pp. 37–43 Read article
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Sustainable hydraulic system assisted with PV array
Abstract: The paper describes a new hydraulic system to supply water and energy to human settlements as well as to small industry applications, livestock water supply and irrigation of agricultural plantations. The system consists of two interconnected water dams and a single water reservoir; the system is operated by two hydraulic turbines of different power generation capacity. The system has been designed for the Canary Islands, but can be applied to …
Published in International Journal of Water Resources Engineering · Vol. 8, Issue 1, 2022 · pp. 39–54 Read article
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Modification of Solar Hot Water Heating System
Abstract: In optoelectronics system, the copper sulfide powder plays an important role as a thin film layer. This paper covers fabrication of Copper sulfide (CuS) Powder and its characterization. The fabricated Copper sulfide powder gives better result as compared to commonly used Copper sulfide (CuS) available in the market. In this experiment, the Copper sulfide powder (CuS) was coated on the tubes as a thin film and measured the outlet water …
Published in International Journal of Water Resources Engineering · Vol. 9, Issue 1, 2023 · pp. 33–39 Read article
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Symmetrical 7-Level Multilevel Inverter with RV Topology
Abstract: A multilevel inverter is a power electronic device which is capable of providing desired alternating voltage level at the output using multiple lower level DC voltages as an input. Multilevel inverter is widely used for high-power high-voltage applications. It can eliminate the need for the step-up transformer and reduce the harmonic content and lower EMI and higher dc link voltages. However, it has some disadvantages such as increased number of …
Published in International Journal of Analog Integrated Circuits · Vol. 1, Issue 1, 2015 · pp. 27–34 Read article
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Imminent Scopes on Power Electronics Technologies for Wind Turbine System
Abstract: This paper proposes a use on development of technologies of Power Electronics for the generation of high power using wind turbine system. Amid the most recent two decades Power Electronics assumes an imperative part in numerous mechanical applications for the era of force from 1 to 10 kW power. Presently a-days there are new up and coming advancements in force hardware which gives high proficiency, better unwavering quality and great …
Published in International Journal of Electrical Power System and Technology · Vol. 1, Issue 2, 2015 · pp. 10–16 Read article
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MRAC Based Speed Estimation of Three DTC Techniques for Three-phase Inverter Fed IPMSM Drive
Abstract: This paper aims to study three Direct Torque Control (DTC) techniques for an Interior Permanent Magnet Synchronous Machine (IPMSM) using Model Reference Adaptive Control (MRAC). In the conventional DTC technique using a look-up table, gate signals are given to the Inverter that drives IPMSM. Since it is a 6-sector scheme and the operation of the minimum number of voltage vectors, undesired torque and flux ripples are created. Hence the problem …
Published in International Journal of Electrical Power System and Technology · Vol. 9, Issue 2, 2023 · pp. 1–15 Read article
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Improved Efficiency of PV Module Using Incremental Conductance MPPT and DC–DC Boost Converter
Abstract: Solar energy has been most popular renewable energy source because of its long-term outcomes. The study presents the simulation and the hardware implementation of Photovoltaic module utilizing incremental conductance MPPT with the help of DC–DC boost converter. The better trade-off between the PV module power and power achieved after using converter and MPPT technique has been shown and improved efficiency also has been achieved. The incremental conductance MPPT has been …
Published in International Journal of Embedded Systems and Emerging Technologies · Vol. 4, Issue 2, 2018 · pp. 1–8 Read article
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ECG Extraction Techniques: A Review
Abstract: Cardiovascular disease is growing exponentially day by day. Also, Electrocardiography (ECG) plays a vital role in monitoring heart health by providing certain information to a cardiologist, which would be helpful to detect the heart conditions such as stroke and arrhythmia. ECG is a graph of voltage against the time of the heart's electrical activity that can be extracted by connecting electrodes into the skin. Measuring the ECG of a particular …
Published in International Journal of Embedded Systems and Emerging Technologies · Vol. 7, Issue 2, 2021 · pp. 1–5 Read article
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Deep Learning Approach Based Brain Tumor Detection
Abstract: The brain tumor is one of the most deadly disease which is of great concern and hence to detect and extract the effected tumor area in the brain from the MRI has lot of research potential. It is also a very difficult task to perform by the experts. The perfection of the vivisection depends on how much experienced the radiologist or the clinical expert is. So to overcome the wastage …
Published in International Journal of Embedded Systems and Emerging Technologies · Vol. 8, Issue 1, 2022 · pp. 57–63 Read article
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Solar Based Smart Irrigation System Using NodeMCU and IoT
Abstract: Power and water resources are not sufficient in the current situation to meet the needs of the farmer, because they are not efficient at juggling several demands, such as the availability of water, energy sources, and timely soil profile monitoring. Traditionally used irrigation systems are proving to be less ineffective. We created a system to monitor the condition of soil using sensors connected to Node MCU, taking advantage of this …
Published in International Journal of Microelectronics and Digital integrated circuits · Vol. 8, Issue 2, 2022 · pp. 1–8 Read article
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Miniature Metamaterial Antenna for Microwave Imaging Application
Abstract: The work represented in the paper proposes a miniature Metamaterial (MTM) antenna using Split Ring Resonator (SRR) for Microwave Imaging applications. This SRR is fed using a single microstrip line. For structure optimization, parametric study is exploited, which helps in obtaining impedance bandwidth over the UWB frequency range (3.1 to 9.9 GHz). Entire structure is built on a FR-4 (εr = 4.3) Glass Epoxy substrate of dimensions of 13*12*1.6 mm. …
Published in International Journal of Microwave Engineering and Technology · Vol. 6, Issue 2, 2020 · pp. 18–25 Read article
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OFDM Systems with Reduced PAPR
Abstract: To reduce peak to average power radio (PAPR) of orthogonal frequency division multiplexing (OFDM) system, flexible and distortion less methods like SLM (Selected mapping) and PTS (Partial transmit sequences) are very useful. The variation of OFDM signal amplitudes is very wide with high PAPR. Huge PAPR necessitates a DAC with sufficient dynamic range to handle the OFDM signals' large peaks. PAPR reduction has been demonstrated to save considerable amounts of …
Published in International Journal of Microwave Engineering and Technology · Vol. 7, Issue 1, 2021 · pp. 22–28 Read article