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1972 articles for “4-dioxopyrimidine-5-carbonitrile” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Determining Fertility Status of soil at Different land uses at Koka Watershed Tembaro Woreda, Central Ethiopian
Abstract: The study was conducted in Central Ethiopia, Tembaro Woreda, for two consecutive years, 2023 and 2024, at Bohe and Bachira Kebeles within the Omo River Basin in the Koka watershed. The objectives of this study were to determine the fertility status of different land uses at the study sites. The study results indicate that soil at the study site ranges from moderately acidic to slightly acidic, with low to moderate …
Published in Research & Reviews : Journal of Agricultural Science and Technology · Vol. 15, Issue 2, 2026 · pp. 10–17 Read article
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An Investigation on Influence of Gamma-Irradiation and Doping on Chemical Structures and Optical Properties of Conducting Polypyrrole
Abstract: In this study, the authors report on effect of gamma-irradiation and doping (bromine, iodine and sulfate ion) on chemical structure and optical, electronic properties of polypyrrole. Optical absorption spectrum of PPY shown absorption bands centered around 36.2.5 nm (peak 1), 450 nm (peak 2) and 525 nm (peak 3) positions. Gamma irradiation resulted in broadening of peak A together with a band shift of 45–525 nm and disappearance peaks 2 …
Published in Journal of Polymer & Composites · Vol. 14, Issue 5, 2026 · pp. 48–57 Read article
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Design of a Plant for the Production of Ammonia and Urea Using Aspen HYSYS
Abstract: The design of a plant for the production of 1800 MT/Day of ammonia and 1400 MT/Day of urea using aspen HYSYS was carried out in this work. Ammonia is produced through the Haber-Bosch process, where hydrogen and nitrogen react in the presence of a catalyst producing mixture containing ammonia while urea is produced by the reaction between ammonia and carbon IV oxide. In this work, aspen HYSYS, chemical engineering design …
Published in Emerging Trends in Chemical Engineering · Vol. 9, Issue 1, 2022 · pp. 29–44 Read article
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The Positive Significance of Cymbopogon citratus (Lemon Grass) in Remediation of Crude Oil in the Environment of Soil
Abstract: The effectiveness of using lemon grass in the remediation of soil contaminated by crude oil was investigated. The material investigated is lemon grass and the potential in terms of performance was monitored with biokinetic parameters evaluation. Six samples of 1000g of soil each were polluted with 100 ml of raw crude oil. The samples were later amended with dosage of 20g, 40g, 60g, 80g and 100g of dried lemon grass …
Published in Emerging Trends in Chemical Engineering · Vol. 10, Issue 3, 2023 · pp. 13–26 Read article
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Utilization of Fish Excreta for Algae Production
Abstract: AbstractAlgae has been existing on earth since its beginning but its prospective advantages have recently been understood and hence it is now being considered to play a major role in solving some of the most critical problems of the world. However the high cost of algae production is the biggest obstacle in making algae a mainstream candidate for the development of various products. The current study tried to reduce the …
Published in Journal of Alternate Energy Sources & Technologies · Vol. 8, Issue 3, 2017 · pp. 9–17 Read article
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A Multiband Microstrip-fed Slot Antenna for ITS/WLAN/WiMAX & IEEE 802.11a Application
Abstract: A microstrip-fed slot antenna for multiband operation is proposed. The antenna is printed on silicon substrate with thickness of 1.6 mm and dielectric constant of 11.9. A simple 50Ω microstrip line is used to excite the antenna. Small rectangular slots are fabricated on substrate to achieve multiband operation of 2.34–2.44, 3.73–3.77, 3.97–4.05, 4.59–4.79, 5.14–5.26, 5.49–5.57, 5.71–5.8 and 5.86–5.95 for lS1 1l ≤ −10dB. The designing has been done in IE3D …
Published in Journal of Electronic Design Technology · Vol. 4, Issue 1, 2013 · pp. 1–4 Read article
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Study of Low Back Flexibility among Insurance Office Employees Using Sit and Reach Test
Abstract: AbstractThe job of insurance employees demands prolonged sitting in the office and they are overworked, which reduces flexibility of body and increases the body mass index (BMI), causing musculoskeletal pain through constant stress on the musculoskeletal system. The aim of the study is to estimate the level of flexibility among insurance office employees and to analyze the factors responsible for the low flexibility. The survey was carried out at various …
Published in Journal of Industrial Safety Engineering · Vol. 5, Issue 1, 2018 · pp. 13–17 Read article
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Effect of Magnetic Field on Casting Parameters
Abstract: AbstractThe casting process is one of the oldest manufacturing methods involving squeezing / jolting the green sand used as moulding material, and further was developed with use of binders such as clay/organic resins. The constants search for newer moulding material lead to the magnetic mould involving steel shots and application of magnetic field. The preliminary trials on one of the process parameters i. e. Magnetic field was carried out and …
Published in Journal of Materials & Metallurgical Engineering · Vol. 8, Issue 3, 2018 · pp. 30–35 Read article
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Evaluation of Mechanical Property and Optimization of the Dry Sliding Wear Behavior of Carbon Black-Alumina-Epoxy-Glass Composite by using Design of Experiments
Abstract: The research work is mainly focused on investigating the effects of wear parameters: filler content (0%, 4% CB, 4% Al2O3,and 2% CB + 2% Al2O3), applied load (4.905, 9.810, 14.710, and 19.62 N), sliding distance (20, 30, 40, and 50 mm) by using Design of Experiments (DOEs) approach. The experimental results were analyzed using MINITAB V16 scientific graphical and data analysis software. Signal-to-Noise (S/N) ratio, analysis of variance (ANOVA) proved …
Published in Journal of Materials & Metallurgical Engineering · Vol. 4, Issue 2, 2014 · pp. 21–31 Read article
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Effect of Time Exposure on Human Blood by Laser Flash Photolysis
Abstract: Diffuse reflectance laser flash photolysis has been used in blood sample to measure transient triplet spectra of free radical or reactive oxygen species (OH, O2, H2O2) generated in free cell systems was investigated using laser flash photolysis and electronic absorption spectra. In all cases, triplet–triplet absorption spectra with the application of this technique to studies concentration of normal human blood sample. The concentration of normal human blood sample is reduced …
Published in Journal of Materials & Metallurgical Engineering · Vol. 10, Issue 2, 2020 · pp. 15–20 Read article
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Determination of Heavy Metals in Soil Samples in the Vicinity of Liquid Natural Gas Project, Shabwah Governorate, Yemen
Abstract: The present work aimed to determine the contaminants in soils resulting from or deposited due to emissions that come from natural gas in the area of Balhaf which is an LNG project in Republic of Yemen. Total of 8 surface soil samples were collected at depth of approximately (0–10 cm) from two sites which has different distances from the natural gas liquefaction project, took 4 samples from first site. The …
Published in Journal of Materials & Metallurgical Engineering · Vol. 12, Issue 1, 2022 · pp. 67–76 Read article
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Performance Analysis of Complimentary Pass Transistor Logic Based Multiplexer Using Dual-gate FinFET Technology
Abstract: AbstractThis paper presents the design and analysis of double gate FinFET complimentary pass transistor logic (CPL) multiplexer. The circuit of multiplexer (MUX) using CPL is used for comparison of performance parameters like average power consumption, rise/fall time, delay, slew rate, PDP and EDP. Multiplexer is a digital circuit, it has inputs and select line; select lines are used for select input lines to transfer data to the output end. The …
Published in Journal of Microelectronics and Solid State Devices · Vol. 5, Issue 1, 2018 · pp. 41–48 Read article
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Performance Evaluation Studies of Purolite NRW-5010 and Indion AGR Anion Exchange Resins by Radioactive Tracer Technique
Abstract: AbstractThe characterization of organic base anion exchange resins Purolite NRW-5010 and Indion AGR was made by application of short lived radio tracer isotopes 131I and 82Br. The characterization of the two resins was based on their performance during iodide and bromide ion-isotopic reaction taking place between the resin surface and the external labeled ionic solution. The exchange reactions were carried out by using the ionic solution in the concentration range …
Published in Journal of Nuclear Engineering & Technology · Vol. 4, Issue 1, 2014 Read article
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Studies on Mechanical, Thermal Properties, Characterization and UV-Accelerated Weathering of HIPS-PLA Blends using Glycerol as Compatibilizer
Abstract: AbstractHIPS (High Impact Polystyrene) was blended with PLA (poly lactic acid) in three formulations as 80:20, 65:35 and 50:50% (wt%) using a twin screw extruder and by using glycerol (4%) as compatibilizer. Test specimens were prepared by using an injection moulding machine and the mechanical, thermal and electrical properties were determined. The tensile strength first decreases and then increases with increasing percentage of PLA, but lower than that of both …
Published in Journal of Polymer & Composites · Vol. 5, Issue 2, 2017 · pp. 1–11 Read article
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Dielectric Responses of Hybrid Polymer Matrix Composites at 2–3 GHz Microwave Frequencies
Abstract: AbstractMeasurement of dielectric properties of polymeric materials in the 2–3 GHz frequency region is very important for strategic applications such as communication electronics, rapid prototyping, and radiation assisted heating. As per international standards for industrial, scientific and medical applications (ISM) 0.9, 2.45 and 5.8 GHz microwaves can be used both for heating and communication purposes, of this 2.45 GHz is most widely used frequency, hence it is important to characterize …
Published in Journal of Polymer & Composites · Vol. 3, Issue 1, 2015 · pp. 1–11 Read article
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Life Expectancy Rate and Health Facilities in Kachchh District
Abstract: After earthquake due to industrialization, population is growing; so many private hospitals have opened for treatment of different diseases. But the rural areas are deprived of health facilities. In rural areas, 55.50% samples of families agreed that they had suffered from one or the other type of addiction. About 75% samples of rural families do not get pure drinking water. About 72% samples of families agree that they live in …
Published in Journal of Production Research & Management · Vol. 2, Issue 1-2-3, 2012 · pp. 66–78 Read article
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Different Compressor Adders
Abstract: AbstractMultipliers are one of the main blocks which decide the circuit performance as well as computation speed. In multiplication, addition of partial products contributes most to the circuit delay, power, and area. In this project, compressor adders are used to reduce this delay. Hence, compressors are a major part of the multiplier circuit that decides the overall speed of the system. For high-speed processing and higher systems, a huge number …
Published in Journal of Semiconductor Devices and Circuits · Vol. 5, Issue 2, 2018 · pp. 19–26 Read article
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BER Performance Analysis for Digital Modulation Techniques in AWGN Channel of FSO Communication System with Low Attenuation Coefficient
Abstract: BER is a potential methodology for examining digital transmission systems by providing a measurable and useful indication of system performance. If the BER rises within limit then the system performance will be obviously satisfactory. The paper represents BER performance of FSO communication system for a few number of digital modulation techniques: BPSK, QPSK, 4-QAM and 16-QAM in AWGN channel by exploiting the Matlab simulated BER versus SNR graphs. The numerical …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 1, Issue 3, 2014 · pp. 12–19 Read article
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Cluster Based Sleep Transistor Approach for Low Power 6T SRAM Cell
Abstract: The demand of high density VLSI circuits has been increasing as the size of ICs is becoming small day by day. It has been seen that, to reduce active power dissipation in memory, the supply voltage reduction is necessary. Lowering the supply voltage is one of the most straightforward and effective ways to suppress the energy consumption because reducing the supply voltage could reduce the dynamic power and leakage power …
Published in Journal of VLSI Design Tools and Technology · Vol. 6, Issue 1, 2016 · pp. 41–48 Read article
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ENGINEERING ASSESSMENT OF WATER TREATMENT METHODS FOR PUBLIC HEALTH IN OGUN STATE, SOUTH-WESTERN NIGERIA
Abstract: Water and sanitation are important determinant of public health and there is a need to evaluate it. Method used was a descriptive qualitative assessment of sanitation and water handling practices in some rural areas of Ogun State Nigeria was conducted. Results: The results obtained showed that about 30% do not have toilet facility while 55.6% had pit latrine. Only 20.8% had a closed dustbin, open dustbin (37.2%) while 42.0% had …
Published in Journal of Water Resource Engineering and Management · Vol. 5, Issue 3, 2018 · pp. 8–16 Read article