Search
1976 articles for “land use/land cover (LU/LC)” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
Nothing matched all of your words, so these match any of them.
-
Study of Physical and Chemical Properties of Heavy Waxy Crude Oil from Cambay Basin Using Rheometer and Cross-Polar Microscope
Abstract: Production of heavy crude is quite difficult as the pressure drops from reservoir to production facility are quite large. This often leads to the precipitation and deposition of common organic solids (paraffin). These solids may deposit on surfaces, collect in low-energy regions or increase the effective viscosity of the flowing fluid. The net effect is an increase in pressure drop for a given rate through reduction in flowing area or …
Published in Journal of Petroleum Engineering & Technology · Vol. 7, Issue 3, 2017 · pp. 12–18 Read article
-
Challenges and Prospects of the Use of Horizontal Directional Drilling Techniques for Laying Oil and Gas Pipelines in Nigeria
Abstract: Nigeria pipelines, especially the petroleum and petroleum product pipelines are always vandalized by the sabotage. Huge amount of money is expended to put the damaged pipeline in good shape; and petroleum and petroleum product transfer is sometimes hampered due to leakages and damages caused by the oil thieves. Also huge money is being budgeted yearly to secure the pipelines. To combat this problem, horizontal directional drilling (HDD) is being proposed. …
Published in Journal of Petroleum Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 9–20 Read article
-
Revamp of Feed Preheat Network Using Aspen Hysys in a Kero Hydro-Desulphurization Unit
Abstract: The paper is based on the revamp of feed preheat network in a Kero hydro-desulphurization unit. This revamp is beneficial as it does not require additional equipment to raise the feed temperature. Desulphurization of crude is a catalytic process used in oil and gas refining industry to remove sulphur content from refined petroleum products. Previously, feed was charged from the crude distillation unit at 103°C. Due to envisaged changes, the …
Published in Journal of Petroleum Engineering & Technology · Vol. 7, Issue 2, 2017 · pp. 29–38 Read article
-
Extraction and Characterization of an Eco-Friendly Surfactant for Its Use in Enhanced Oil Recovery
Abstract: Experimental studies have been performed to explore the suitability of an eco-friendly surfactant in enhanced oil recovery. In this respect, herbal surfactant has been isolated from soap nut and characterized by its morphology and physico-chemical properties. The extracted surfactant reduces the interfacial tension significantly over a wide range of concentrations. A series of flooding experiments have been carried out using the extracted surfactant and substantial incremental recoveries have been observed …
Published in Journal of Petroleum Engineering & Technology · Vol. 3, Issue 1, 2013 · pp. 20–29 Read article
-
Recycling of Waste Generator Oils by Different Treatment Methods
Abstract: Engine oils with wide range of viscosities are used to lubricate an engine’s moving parts in different industrial units. Used engine oils are considered hazardous wastes because of their high content of pollutant ,thermal degradation products from the base oil and additives and combustion products from fuel and lubricant. The used oil still contains a large proportion of valuable base oil that may be used to formulate new lubricants if …
Published in Journal of Petroleum Engineering & Technology · Vol. 2, Issue 1-3, 2012 · pp. 103–115 Read article
-
Synthesis and Characterization of Triethanolamine Derivative of Sodium Dodecy l Sulphate and its Use in Enhanced Oil Recovery
Abstract: The paper deals with the synthesis and characterization of a new surfactant and its use in Alkali-Surfactant- Polymer (ASP) flooding in enhanced oil recovery (EOR). The material has been synthesized from sodium dodecyl sulphate and triethanolamine. The synthesized surfactant has been characterized by measuring the surface tension of its aqueous solution and it has been found that the surface tension of derivative surfactant is much lower than that of pure …
Published in Journal of Petroleum Engineering & Technology · Vol. 1, Issue 1-3, 2011 · pp. 37–45 Read article
-
Estimation of Dulling Rate and Bit Tooth Wear Using Drilling Parameters and Rock Abrasiveness
Abstract: Optimisation of the drilling operations is becoming increasingly important as it can significantly reduce the oil well development cost. One of the major objectives in oil well drilling is to increase the penetration rate by selecting the optimum drilling bit based on offset wells data, and adjust the drilling factors to keep the bit in good condition during the operation. At the same time it is important to predict the …
Published in Journal of Petroleum Engineering & Technology · Vol. 9, Issue 3, 2019 · pp. 1–20 Read article
-
Polystyrene Plastic Waste into Liquid Fuel Using Silica-Alumina Catalyst, Extracted from Rice Husk
Abstract: Catalytic Pyrolysis of Polystyrene (PS) into fuel like products using silica alumina catalyst that was extracted from rice husk was investigated over temperature range of 430–470°C. The output of catalytic pyrolysis was liquid oil, solid residues (char) and gaseous fraction. The product yields as a function of temperature, time and catalyst amount were studied. High conversion of liquid (48.8%) was achieved at 430 and 450ºC in the presence of 12.5 …
Published in Journal of Petroleum Engineering & Technology · Vol. 10, Issue 3, 2020 · pp. 15–31 Read article
-
Comparison of Hard Wood Functional Parameters on the Deliverability using Buckingham Pi Theorem: The Concept of Procurement
Abstract: This investigation was able to address the effect of wood density and weight on the tensile strength and deliverability of the truck performance and as medium to forecast the procurement plan for cost optimization. This was achieved using the Buckingham Pi Theorem by considering the necessary constrain factors as presented in the development of the model. Indeed, the study demonstrates the significance of wood density and wood weight on truck …
Published in Journal of Petroleum Engineering & Technology · Vol. 12, Issue 3, 2022 · pp. 19–27 Read article
-
Optimization of process parameters in pocket milling of SAE304 based on tool path strategies using Taguchi method
Abstract: Surface roughness is the most significant factor in manufacturing industry to accept most of the machined components. In modern manufacturing CNC milling is one of the most commonly used machining process for different components. Pocket milling is building importance in plastic molding, Ship building and aircraft manufacturing. The surface finish is attained by finishing operations in most of the cases, which causes increase in production cost and time. This can …
Published in Journal of Production Research & Management · Vol. 8, Issue 3, 2018 · pp. 49–56 Read article
-
Scheduling of PCB Assembly Using Particle Swarm Optimization Algorithm
Abstract: This paper deals with the problem of scheduling ‘N’ printed circuit boards (PCBs) on a single machine equipped with an automatic component interchange mechanism. The total number of different components required to process all ‘N’ PCBs is greater than the capacity of the spool. If the essential components are not on the spool, then one or more component switches must take place earlier than the PCB can be processed. The …
Published in Journal of Production Research & Management · Vol. 2, Issue 1-2-3, 2012 · pp. 43–59 Read article
-
Lean Production using Casting Simulation to Promote FTR Approach
Abstract: When the talk is about the green production, then intention is to develop a product with first-time-right approach. Foundry desperately needs such production system, as it provides wide range of products. Even the small errors in the inputs (concept, design, raw material, process, etc.) can lead to wasted outputs [1], and invite unwanted cost of reworking. Thus, it is of extreme importance to develop the castings with FTR (first time …
Published in Journal of Production Research & Management · Vol. 3, Issue 2, 2013 · pp. 23–29 Read article
-
Improving Cycle Time Using Value Stream Mapping in Foundry
Abstract: As competition between manufacturing industries tightens every day, there is need for continual improvement of process to increase productivity. Thus, there is urgency to improve the productivity of firms to sustain in global competitive market. There are wide ranges of opportunities in which one can enhance satisfaction growth of the firm. Reducing lead time by eliminating waste and thereby improving cycle time of a process is one of the areas …
Published in Journal of Production Research & Management · Vol. 4, Issue 1, 2014 · pp. 22–32 Read article
-
Evaluation of Industry 4.0 Adoption Obstacles Through the Use of SMEs
Abstract: Industry 4.0 offers significant technology advancements, but businesses must overcome several obstacles before implementing it. Although a lot of work has gone into identifying the hurdles that most businesses face, the literature currently in publication has not taken the time to examine how these barriers relate to one another or what that means for practitioners. Within the framework of Portugal's manufacturing sector, we employ the interpretative structural modelling (ISM) technique …
Published in Journal of Production Research & Management · Vol. 13, Issue 3, 2023 · pp. 24–38 Read article
-
Study of Scaling of MOSFET on Various Electrical Characteristics using Silvaco TCAD Tool
Abstract: MOSFETs are the driving work horse of semiconductor industry. Over the years, the MOSFET device density has been continuously increasing owing to the reduction in channel length of MOSFET device. This article discusses the effect of scaling i.e. channel length and gate oxide thickness on various parameters like threshold voltage, transconductance, maximum drain current and subthreshold slope. It is important to consider that with scaling of the channel length; the …
Published in Journal of Semiconductor Devices and Circuits · Vol. 5, Issue 1, 2018 · pp. 11–19 Read article
-
Design of a Multipurpose Ternary Arithmetic Circuit Using CNTFET
Abstract: AbstractIn this paper, a multipurpose ternary arithmetic circuit is presented for ternary processors based on carbon nanotube field effect transistors (CNTFETs). Both addition and subtraction can be performed using same circuit’s configuration, which is the special feature of the proposed circuit. The combination of pseudo and complimentary logic structure are employed to blend the binary and ternary logic techniques. The propagation delay and power delay product are 139.5 pico second …
Published in Journal of Semiconductor Devices and Circuits · Vol. 3, Issue 1, 2016 · pp. 13–24 Read article
-
A VME Interface for Slave PCB using VIVADO
Abstract: AbstractThe VME bus may be broadly utilized mechanical bus, used to connected, mechanical, aviation transmission, military and command application. In arrange to supplant the VME transport interface chip numerous offspring sheets in framework, VME bus interface is executed on FPGA. This paper depicts the common attribute of VME bus and presents a design flow for VME Interface (Read and Write operation). Focus is on VME interface boards comprises of FPGA …
Published in Journal of Semiconductor Devices and Circuits · Vol. 7, Issue 2, 2020 · pp. 1–8 Read article
-
Non-Invasive Diabetes Test by Breath Analysis using Semiconductor Gadget
Abstract: AbstractNon-invasive detection of diabetes via acetone sensing using nanostructure semiconductor metal oxides (SMO) is an alternative fast and direct method to invasive blood analysis. It is a reliable and accurate technology. Of late, graphene and graphene oxides are promising nanomaterials for acetone sensing.Keywords: Non-invasive diabetes; Breath analysis, Acetone sensing; Nano materials.Cite this ArticleSurajit Kumar Hazra, Sukumar Basu. Non-Invasive Diabetes Test by Breath Analysis using Semiconductor Gadget. Journal of Semiconductor Devices …
Published in Journal of Semiconductor Devices and Circuits · Vol. 7, Issue 2, 2020 · pp. 20–22 Read article
-
Artificial Neural Network Implementation in FPGA using Multiplexer-based Weight Updating for Efficient Resource Utilization
Abstract: This paper presents a novel scheme for field-programmable gate array (FPGA) implementation of an artificial neural network (ANN). The proposed implementation is aimed at reducing resource requirement, without compromising on the speed so that a complex ANN architecture could be realized on a single chip at a lower cost. The weight updating process in different layers of the ANN has been carried using a simple MUX-based architecture. Backpropagation algorithm which …
Published in Journal of Semiconductor Devices and Circuits · Vol. 2, Issue 1, 2015 · pp. 1–5 Read article
-
Design and Implementation of Low Power Area Effective 2×4 Decoder for SARM Applications Using 16 nm Technology.
Abstract: This project involves analysis of Modified Mixed Logic Design abbreviated as MMLD which includes following design logics: Complementary Metal Oxide Semiconductor abbreviated to CMOS logic design, Gate Diffusion Input abbreviated as GDI technique, and Dual Value Logic called as DVL. Two logic styles are used in this paper study to reduce power dissipation and delay time which are fourteen 14-transistor and fifteen 15-transistor decoders. Every situation requires the use of …
Published in Journal of Semiconductor Devices and Circuits · Vol. 10, Issue 1, 2024 · pp. 24–36 Read article