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Journal articles on the topic 'Low-head energy conversion'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Bellamy, N. W. "Low-head hydroelectric power using pneumatic conversion." Power Engineering Journal 3, no. 3 (1989): 109. http://dx.doi.org/10.1049/pe:19890023.

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2

Sun, Yang, Yuting Yao, Min Yan, et al. "Energy conversion efficiency from low-head water to high-pressure gas." Renewable Energy 138 (August 2019): 1–10. http://dx.doi.org/10.1016/j.renene.2019.01.062.

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3

Ramos, Helena M., Mariana Simão, and Kaloyan N. Kenov. "Low-Head Energy Conversion: A Conceptual Design and Laboratory Investigation of a Microtubular Hydro Propeller." ISRN Mechanical Engineering 2012 (February 29, 2012): 1–10. http://dx.doi.org/10.5402/2012/846206.

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Low-head microhydro systems for energy production are becoming accepted because of oil crises and new advances in their design and efficiencies. As this is still a new area for development and experimentation, it is important to test and validate the optimal conditions and the hydrodynamic behaviour of such systems under different conditions. The aim of this paper is to present a turbine design validation practise, which researchers and equipment manufactures can use for the hydrodynamic behaviour analysis of new low-head turbines prior to production and application. Laboratory experimental te

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Kapooria, Raj Kumar. "An efficiency assessment analysis of a modified gravitational Pelton-wheel turbine." Journal of Energy in Southern Africa 20, no. 4 (2009): 19–29. http://dx.doi.org/10.17159/2413-3051/2009/v20i4a3308.

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A Pelton-wheel impulse turbine is a hydro mechanical energy conversion device which converts gravitational energy of elevated water into mechanical work. This mechanical work is converted into electrical energy by means of running an electrical generator. The kinetic energy of the Water-jet is directed tangentially at the buckets of a Pelton-wheel. The Water-jet strikes on each bucket’s convex profile splitter and get split into two halves. Each half is turned backwards, almost through 180° relative to the bucket on a horizontal plane. Practically this angle may vary between 165° to 170°. Norm

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Wang, Hao, Fujun Wang, Chaoyue Wang, Benhong Wang, Chenfeng Li, and Dianji Li. "A prospective assessment of scale effects of energy conversion in ultra-low-head pumped hydro energy storage units." Energy Conversion and Management 315 (September 2024): 118798. http://dx.doi.org/10.1016/j.enconman.2024.118798.

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Mohd Farriz Basar, Fatin Syakira Mohd Hassan, Nurul Ashikin Rais, Izzatie Akmal Zulkarnain, and Wan Azani Wan Mustafa. "Performance Analysis of Z-Blade Reaction Type Turbine for Low-Head Low Flowrate Pico Hydro." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 85, no. 2 (2021): 51–65. http://dx.doi.org/10.37934/arfmts.85.2.5165.

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The study explores the performance characteristics of a Z-Blade reaction type water turbine and investigates a test unit for an ideal and practical case using the governing equations derived from the principles of conservation of mass, momentum, and energy. Various analyses are conducted with consideration of the ideal and possible operating condition for low-head (3 m to 5 m) and low-flow (2.5 L/sec and below) water resources. The relationship of the fluid flow friction known as k-factor with mass flow rate and angular velocity for a Z-Blade turbine model is discussed. The measured performanc

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Mariani, Antonio, Gaetano Crispino, Pasquale Contestabile, et al. "Optimization of Low Head Axial-Flow Turbines for an Overtopping BReakwater for Energy Conversion: A Case Study." Energies 14, no. 15 (2021): 4618. http://dx.doi.org/10.3390/en14154618.

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Overtopping-type wave power conversion devices represent one of the most promising technology to combine reliability and competitively priced electricity supplies from waves. While satisfactory hydraulic and structural performance have been achieved, the selection of the hydraulic turbines and their regulation is a complex process due to the very low head and a variable flow rate in the overtopping breakwater set-ups. Based on the experience acquired on the first Overtopping BReakwater for Energy Conversion (OBREC) prototype, operating since 2016, an activity has been carried out to select the

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Chen, Bo, and Yuzhe Qian. "Effects of Blade Suction Side Modification on Internal Flow Characteristics and Hydraulic Performance in a PIV Experimental Centrifugal Pump." Processes 10, no. 12 (2022): 2479. http://dx.doi.org/10.3390/pr10122479.

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In this paper, the effects of blade trailing edge (TE) profile modification of the suction side on the internal flow and hydraulic performance in a low-specific speed centrifugal pump are investigated through particle image velocimetry (PIV) analysis. Three impellers with different blade trailing edge profiles named original trailing edge (OTE), arc trailing edge 1 (ATE1), and arc trailing edge 2 (ATE2) are designed for PIV experiments. Results show that blade trailing edge modification of the suction side can significantly change the flow pattern, affecting the hydraulic performance of the mo

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Di Lauro, Enrico, Maria Maza, Javier L. Lara, Inigo J. Losada, and Diego Vicinanza. "NUMERICAL MODELING OF WAVE INTERACTION WITH A NON-CONVENTIONAL BREAKWATER FOR WAVE ENERGY CONVERSION." Coastal Engineering Proceedings, no. 36 (December 30, 2018): 64. http://dx.doi.org/10.9753/icce.v36.structures.64.

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The hybrid non-conventional breakwaters are innovative coastal structures, which have as a primary function the coastal and harbours protection, but with the important benefit of electricity production, due to their combination with Wave Energy Converters. The most recent example of a non-conventional breakwater is called OBREC, standing for Overtopping Breakwater for Energy Conversion (Vicinanza et al., 2014). The device consists of a traditional rubble mound breakwater, in which the seaward armour layer in the upper part is replaced with a frontal sloping ramp and a reservoir. The structure

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Dendy Adanta, Ilham Saputra, Dewi Puspita Sari, et al. "Investigation on the Blade Number of Pico-scale Crossflow Turbine for Low Head by Numerical Method." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 118, no. 2 (2024): 1–12. http://dx.doi.org/10.37934/arfmts.118.2.112.

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Pico-scale crossflow turbines (CFT) can be an alternative solution to meet electrical energy needs, especially in remote rural areas. CFT is recommended because of its suitability in low head (< 5 m) conditions and fluctuating discharge conditions. One of the parameters that influences the performance of a CFT is the number of blades of the runner. CFT was discovered in 1903 and is still developing; however, the study of the physical phenomena of flow due to the blade number on the energy conversion process has yet to be comprehensively depicted. Therefore, this study aims to analyze the ef

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Tang, Shuxin, Yating Zhang, Jun Xia, et al. "A tetra-ortho-Chlorinated Azobenzene Molecule for Visible-Light Photon Energy Conversion and Storage." Molecules 30, no. 11 (2025): 2333. https://doi.org/10.3390/molecules30112333.

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The development of photoactive molecules for photothermal energy storage is a focus of research in solar energy utilization technology. Azobenzene photoswitch has emerged as a promising candidate for solar energy conversion and storage due to its unique photoisomerization characteristics. Nonetheless, a majority of azobenzene-based molecular photothermal systems have a significant drawback: they depend on ultraviolet light for E-to-Z isomerization to store photon energy rather than visible light, which seriously hinders the development of azobenzene photoswitch in practical solar energy utiliz

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Diego, Betancur, Ardila Gonzalo, and Chica Lenin. "Design and hydrodynamic analysis of horizontal-axis hydrokinetic turbines with three different hydrofoils by CFD." Journal of Applied Engineering Science 18, no. 4 (2020): 529–36. http://dx.doi.org/10.5937/jaes0-25273.

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The conversion of kinetic energy that comes from low-head water currents to electrical energy has gained importance in recent years due to its low environmental and social impact. Horizontal axis hydrokinetic turbines are one of the most used devices for the conversion of this type of energy [1], being an emerging technology more studies are required to improve the understanding and functioning of these devices. In this context, the hydrodynamic study to obtain the characteristic curves of the turbines are fundamental. This article presents the design and hydrodynamic analysis for three horizo

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Lin, Jeng-Chyan Muti. "Combination of a Biomass Fired Updraft Gasifier and a Stirling Engine for Power Production." Journal of Energy Resources Technology 129, no. 1 (2006): 66–70. http://dx.doi.org/10.1115/1.2424963.

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Biomass is the largest renewable energy source used in the world and its importance grows larger in the future energy market. Since most biomass sources are low in energy density and are widespread in space, a small scale biomass conversion system is therefore more competitive than a large stand-alone conversion plant. The current study proposes a small scale solid biomass powering system to explore the viability of direct coupling of an updraft fixed bed gasifier with a Stirling engine. The modified updraft fixed bed gasifier employs an embedded combustor inside the gasifier to fully combust

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Zheng, Gaoan, Zeheng Gu, Weixin Xu, et al. "Gravitational Surface Vortex Formation and Suppression Control: A Review from Hydrodynamic Characteristics." Processes 11, no. 1 (2022): 42. http://dx.doi.org/10.3390/pr11010042.

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The energy-conversion stability of hydropower is critical to satisfy the growing demand for electricity. In low-head hydropower plants, a gravitational surface vortex is easily generated, which causes irregular shock vibrations that damage turbine performance and input-flow stability. The gravitational surface vortex is a complex fluid dynamic problem with high nonlinear features. Here, we thoroughly investigate its essential hydrodynamic properties, such as Ekman layer transport, heat/mass transfer, pressure pulsation, and vortex-induced vibration, and we note some significant scientific issu

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Syahbana, Zaka, and Rizki Setiadi. "Design of An IOT-Based Voltage and Current Monitoring System and Turbine Performance Analysis In A Micro Hydro Power Plant." Jurnal Inovasi Mesin 7, no. 1 (2025): 52–67. https://doi.org/10.15294/jim.v7i1.23615.

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Microhydro power plants (MHPP) are a potential renewable energy solution for remote areas that have abundant water resources. However, monitoring the performance of MHPP systems in these areas is still a challenge, especially in terms of reliability and energy conversion efficiency. This research aims to design and develop an Internet of Things (IoT)-based monitoring system capable of monitoring real-time voltage and current in MHPs. The system was tested using the Archimedes Screw turbine in a laboratory-based test scale, and a literature study was conducted to compare the effectiveness of se

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16

Carravetta, Armando, Giuseppe Del Giudice, Oreste Fecarotta, Maria Cristina Morani, and Helena M. Ramos. "A New Low-Cost Technology Based on Pump as Turbines for Energy Recovery in Peripheral Water Networks Branches." Water 14, no. 10 (2022): 1526. http://dx.doi.org/10.3390/w14101526.

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The recovery of excess energy in water supply networks has been a topic of paramount importance in recent literature. In pressurized systems, a pump used in inverse mode (Pump As Turbine, PAT) demonstrated to be a very economical and reliable solution, compared to traditional energy production devices (EPDs). Due to the large variability of flow rate and head drop within water distribution networks, the operation of PATs could be performed by a series-parallel regulation system based on an electronic or a hydraulic principle. Despite the low cost of the PATs and of regulation and control syste

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17

Allen, James, Gregorio Iglesias, Deborah Greaves, and Jon Miles. "Physical Modelling of the Effect on the Wave Field of the WaveCat Wave Energy Converter." Journal of Marine Science and Engineering 9, no. 3 (2021): 309. http://dx.doi.org/10.3390/jmse9030309.

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The WaveCat is a moored Wave Energy Converter design which uses wave overtopping discharge into a variable v-shaped hull, to generate electricity through low head turbines. Physical model tests of WaveCat WEC were carried out to determine the device reflection, transmission, absorption and capture coefficients based on selected wave conditions. The model scale was 1:30, with hulls of 3 m in length, 0.4 m in height and a freeboard of 0.2 m. Wave gauges monitored the surface elevation at discrete points around the experimental area, and level sensors and flowmeters recorded the amount of water c

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Culaba, A. B., and I. V. Marfori. "Micro hydro crossflow turbine manufacturing cost analysis using optimization technique." IOP Conference Series: Earth and Environmental Science 1500, no. 1 (2025): 012007. https://doi.org/10.1088/1755-1315/1500/1/012007.

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Abstract Micro hydro crossflow turbines are machines used for the conversion of the kinetic and potential energy of falling water into mechanical energy. It is mainly used for small scale hydro applications of less than 100 kW. It is widely used in community-based power applications owing to its robustness, practicability, acceptable efficiency, and manufacturability. The electro-mechanical component of a micro hydro system gives a significant cost contribution, specifically the turbine component. Due to the simplicity of the crossflow turbine, many micro hydro developers opt to have local sho

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19

Zhou, Peijian, Xing Zhou, Haisheng Zheng, et al. "Energy conversion prediction of ultra-low-head cascade pumped hydro energy storage units in pump mode with variable pitch blades based on multi-strategy grey wolf optimization-support vector regression." Journal of Energy Storage 132 (October 2025): 117677. https://doi.org/10.1016/j.est.2025.117677.

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20

Wei Ren, Hew, Fatimah Al Zahrah Mohd Saat, Fadhilah Shikh Anuar, Mohd Arizam Abdul Wahap, Ernie Mat Tokit, and Tee Boon Tuan. "Computational Fluid Dynamics Study of Wake Recovery for Flow Across Hydrokinetic Turbine at Different Depth of Water." CFD Letters 13, no. 2 (2021): 62–76. http://dx.doi.org/10.37934/cfdl.13.2.6276.

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Depletion of fossil fuel caused mankind to look for sustainable and green energy resources. The characteristic of hydrokinetic turbine with ability to operate at low head stream and at low cost made it a good choice for use to harness hydro source of energy. As hydrokinetic turbine gain attention from the industry player, many experimental and Computational Fluid Dynamics (CFD) studies related to hydrokinetic turbine have been carried out. Yet the relationship of flow depth variation and wake recovery behind the turbine is still not fully understood. There is limited study about the effects of

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21

Li, Cui-Min, Chun-Ying Li, and Lei Wang. "Reliable data transmission method based on 6LoWPAN for building energy systems." Building Services Engineering Research and Technology 41, no. 5 (2019): 623–33. http://dx.doi.org/10.1177/0143624419891521.

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The building energy internet of things is based on radio frequency technology and a wireless sensor network that can collect building energy consumption data in real time. However, with the increasing complexity of wireless sensor network topology, there is a problem of insufficient IP address space relying on IPv4 protocol. In this paper, a design scheme of a building energy system based on 6LoWPAN network is proposed. IPv4/IPv6 address conversion is used to realise the access of IP addresses to each other, so as to monitor building energy consumption information anytime and anywhere. In view

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22

dos Santos, Elizaldo Domingues, Bianca Neves Machado, Marcos Moisés Zanella, et al. "Numerical Study of the Effect of the Relative Depth on the Overtopping Wave Energy Converters According to Constructal Design." Defect and Diffusion Forum 348 (January 2014): 232–44. http://dx.doi.org/10.4028/www.scientific.net/ddf.348.232.

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The conversion of wave energy in electrical one has been increasingly studied. One example of wave energy converter (WEC) is the overtopping device. Its main operational principle consists of a ramp which guides the incoming waves into a reservoir raised slightly above the sea level. The accumulated water in the reservoir flows through a low head turbine generating electricity. In this sense, it is performed a numerical study concerned with the geometric optimization of an overtopping WEC for various relative depths:d/λ = 0.3, 0.5 and 0.62, by means of Constructal Design. The main purpose is t

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23

Szulc, Przemysław, Janusz Skrzypacz, and Witold Lorenz. "Experimental Study of the Influence of the Geometrical Parameters of the Radial Labyrinth Pump on the Pump’s Operating Parameters and Performance." Energies 16, no. 13 (2023): 5158. http://dx.doi.org/10.3390/en16135158.

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Centrifugal pumps are the most common machines responsible for the increase in hydraulic energy in a piping system. Their proper design, operation, and maintenance have a strong influence on the performance of technological processes carried out in many industrial units. For the ultra-low specific speed (nq < 10) application, there is no economical reason for these pumps to be used. This is caused by an increase in internal losses in the pump. The article concerns the problem of the hydraulic operation of a new type of labyrinth pump—the radial labyrinth pump (RLP), which is a developed axi

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Li, Xueguang, and Menchita F. Dumlao. "Lithium Battery SOC Estimation Based on Multi-Head Attention Mechanism and GRU Algorithm." Academic Journal of Science and Technology 7, no. 1 (2023): 90–98. http://dx.doi.org/10.54097/ajst.v7i1.10997.

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Pure electric vehicles have been widely used due to their non-pollution, low noise, high energy conversion efficiency and other advantages. SOC (State of Charge) is a crucial indicator for lithium batteries and pure electric vehicles. SOC cannot be directly measured. This article designs a new network structure. It is the GRU-Attention network structure. The stacked GRU algorithm in GRU-Attention network extracts the temporal characteristics of lithium battery test data, and the stacked multi-head self-attention network extracts the global information. The GRU-Attention network can avoid long-

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Magnoli, M. V., and J. Necker. "Simulation of pressure pulsations for pumped-storage units with wide operating range and comparison to experiments." IOP Conference Series: Earth and Environmental Science 1079, no. 1 (2022): 012042. http://dx.doi.org/10.1088/1755-1315/1079/1/012042.

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Abstract The diversity of energy conversion sources in the current energy market increases the demand for stabilizing the electrical grid through ancillary services, frequency and power regulation from the facilities. Pumped-storage units with reversible pump-turbines or ternary sets constitute the currently most advanced solution for providing these services. This implies that pumped-storage units are required to operate in larger head and power ranges than before. In order to increase their flexibility in pump mode, variable speed units have been applied more frequently with additional chall

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Sookramoon, Krissadang. "Updraft Gasifier-Stirling Engine Biomass Incineration System Power Generation." Trends in Sciences 19, no. 3 (2022): 2170. http://dx.doi.org/10.48048/tis.2022.2170.

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Biomass, the world's largest renewable energy source, will continue to grow in the following energy markets. As a result, small biomass conversion systems are more competitive than large stand-alone converters because most of the biomass sources have low energy density and are widely distributed in space. The current study offers a small solid biomass power generation system to examine the possibility of direct connection of updates fixed bed gasifiers and a Stirling engine. The fixed bed updraft gasifier uses a combustion burner built into the gasifier to completely burn the synthetic gas pro

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27

I. F., Unya, Sodiki J. I., and Nkoi B. "Performance Evaluation of a Hydro-Power Plant." International Journal for Research in Applied Science and Engineering Technology 10, no. 12 (2022): 2376–85. http://dx.doi.org/10.22214/ijraset.2022.48162.

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Abstract: The electrical power generation of any country drives the economy of that country. Sufficient electrical power supply plays an important role for industrial development and growth of any country. The epileptic state of electricity supply in Nigeria arising partly from power generation plants’ inability to operate at installed capacity led to the investigation and evaluation of hydro – power plant operational performances in a bid to suggest ways the generation capacity of these plants can be well utilized. This study evaluated the performance of Shiroro Hydro-Power Plant on monthly b

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Yu, Jing, Rongqiang Guan, Cungui Zhang, and Fang Shao. "A novel object recognition method for photovoltaic (PV) panel occlusion based on deep learning." Journal of Computational Methods in Sciences and Engineering 23, no. 6 (2023): 3391–405. http://dx.doi.org/10.3233/jcm-237108.

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During the long-term operation of the photovoltaic (PV) system, occlusion will reduce the solar radiation energy received by the PV module, as well as the photoelectric conversion efficiency and economy. However, the occlusion detection of the PV power station has the defects of low efficiency, poor accuracy, and untimely detection, which will cause unknown system losses. Based on the deep learning algorithm, this paper conducts research on PV module occlusion detection. In order to accurately obtain the occlusion area and position information of the PV panel, a PV module occlusion detection m

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Hong, S.-M., D. Jung, and S.-J. You. "PSIX-37 Evaluation of reducing dietary crude protein concentrations coupled with increasing essential amino acids on growth performance in fattening pigs." Journal of Animal Science 97, Supplement_3 (2019): 351–52. http://dx.doi.org/10.1093/jas/skz258.700.

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Abstract A body of evidence suggests that low-protein diets in swine have benefits in view of environmental stewardship and economic returns. The present study was performed to evaluate essential amino acid (EAA) supplementation in the diets with reducing crude protein (CP) concentrations on growth performance in fattening pigs. We hypothesized that a low-CP diet with elevated EAA concentrations would result in similar growth performance in fattening pigs compared with a normal CP diet. Eighty finishing pigs with initial body weight (BW) of 72.0 ± 5.34 kg were assigned in a randomized complete

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Poggi-Varaldo, Héctor M., Karla M. Munoz-Paez, Carlos Escamilla-Alvarado, et al. "Biohydrogen, biomethane and bioelectricity as crucial components of biorefinery of organic wastes: A review." Waste Management & Research: The Journal for a Sustainable Circular Economy 32, no. 5 (2014): 353–65. http://dx.doi.org/10.1177/0734242x14529178.

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Biohydrogen is a sustainable form of energy as it can be produced from organic waste through fermentation processes involving dark fermentation and photofermentation. Very often biohydrogen is included as a part of biorefinery approaches, which reclaim organic wastes that are abundant sources of renewable and low cost substrate that can be efficiently fermented by microorganisms. The aim of this work was to critically assess selected bioenergy alternatives from organic solid waste, such as biohydrogen and bioelectricity, to evaluate their relative advantages and disadvantages in the context of

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31

Nasir, Lawal Muhammed, Emmanuel Onche, and Oluwatoyin Lanre Seriki. "Modification, Simulation and Demonstration of Laboratory Scale Pelton Turbine for Waterfall Hydropower Plant." ABUAD Journal of Engineering Research and Development (AJERD) 6, no. 2 (2023): 57–72. http://dx.doi.org/10.53982/ajerd.2023.0602.07-j.

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To demonstrate the concepts of using waterfall hydropower to generate energy, a Mini-Laboratory Pelton Turbine (MLPT) was designed and simulated. The principle of energy conversion from potential energy of water at high elevation to kinetic energy at lower elevation through gravity fall was used. To achieve relative continuity of supply as in waterfall, a centrifugal pump was used to deliver water into a set of three reservoirs positioned at different heights. Water from the reservoirs through pipes of different diameters was used to drive the pelton Wheel turbine. A pipe matrix that allows co

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Proctor, Jarret A., Matthew R. Beck, Nathan S. Long, et al. "134 Effect of Rumen Degradable Protein Intake on Performance, Carcass Quality, and Methane Emissions of Yearling Finishing Steers." Journal of Animal Science 101, Supplement_1 (2023): 82–83. http://dx.doi.org/10.1093/jas/skad068.098.

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Abstract The performance, economic, and environmental consequences of feeding rumen degradable protein (RDP) levels above and below calculated maximum energy-dependent microbial crude protein (MCP) synthesis potential are poorly understood. Yearling steers (n = 54; initial BW = 484.1 ± 26.03 kg) were assigned to one of two pens that each contained an automated head chamber system (GreenFeed; C-Lock Inc., Rapid City, SD) for individual measurement of enteric methane (CH4) emissions. Each steer was assigned to an individual feed bunk (Calan Gate; American Calan, Northwood, NH) and randomly assig

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Chandra, V. K., B. P. Chandra, and Piyush Jha. "Organic Light - Emitting Diodes and their Applications." Defect and Diffusion Forum 357 (July 2014): 29–93. http://dx.doi.org/10.4028/www.scientific.net/ddf.357.29.

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Organic light emitting diodes (OLEDs) have been the focus of intense study since the late 1980s, when the low voltage organic electroluminescence in small organic molecules such as Alq3, and large organic molecules such as polymers (PPV), was reported. Since that time, research has continued to demonstrate the potential of OLEDs as viable systems for displays and eco-friendly lighting applications. OLEDs offer full colour display, reduced manufacturing cost, larger viewing angle, more flexible, lower power consumption, better contrast, slimmer, etc. which help in replacing the other technologi

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Song, Chanyoung, Saenun Song, Myungkyu Lee, and Ik Kim. "Carbon Emission Reduction in Highland Chinese Cabbage Production through Life Cycle Assessment: Comparison with the Low-Carbon Agricultural Product Certification System." Korean Journal of Life Cycle Assessment 26, no. 1 (2025): 35–43. https://doi.org/10.62765/kjlca.2025.26.1.35.

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This study conducted a Life Cycle Assessment (LCA) to quantify greenhouse gas (GHG) emissions and identify mitigation opportunities in Chinese cabbage cultivation in Yongpyeong-myeon, Pyeongchang-gun, South Korea. Following ISO 14067:2018, the cradle-to-gate system boundary was set, and the functional unit was defined as one head of Chinese cabbage. Primary data were collected through researcher-managed field trials. GHG emissions were calculated as 0.9331 kg CO2-eq per head, 0.432 kg CO2-eq per kilogram, and 0.293 kg CO2-eq per 1,000 KRW of market value. Fertilizer application was identified

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Omeed, M. Memar MD PhD, Caughlin MD Benjamin, and Djalilian MD Hamid. "Low Level Laser Treatment for Patterned Hair Loss: A Systematic Review." Archives of Dermatology and Skin Care 1, no. 2 (2018): 20–24. https://doi.org/10.5281/zenodo.2250507.

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  <strong>LOW LEVEL LASER TREATMENT FOR PATTERNED HAIR</strong><strong> LOSS: A    SYSTEMATIC REVIEW</strong>   Omeed Memar<sup>1*</sup>, Benjamin Caughlin<sup>2</sup>, Hamid Djalilian<sup>3</sup> 1 Academic Dermatology & Skin Cancer Institute, Chicago, Illinois 2 Department of Surgery / Division of Otolaryngology, John H. Stroger, Jr. Hospital of Cook County, Chicago, Illinois. Division of Facial Plastic and Reconstructive Surgery, Jesse Brown VAMC, Chicago, Illinois. Division of Facial Plastic and Reconstructive Surgery, University of Illinois Health Hospital Sys

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Ardila Cerquera, Miriam Sophia, Miller Manuel Ávila Parada, Luis Humberto Martínez Palmeth, Juan Gonzalo Ardila Marín, and Jean Carlos Acosta Vargas. "Evaluation of the influence of the number of blades on a Michell Banki turbine on the power generated under given flow and head conditions." EUREKA: Physics and Engineering, no. 3 (May 30, 2025): 27–35. https://doi.org/10.21303/2461-4262.2025.003702.

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Rural areas often face electricity supply challenges due to high costs and low population density, making small hydraulic turbines a viable solution. Michell Banki turbines are a cost-effective alternative, but their efficiency depends on blade count, and most studies rely on commercial software, limiting accessibility. This study evaluates the influence of blade count on power output using open-source computational fluid dynamics (CFD) tools. A numerical simulation approach was employed with FreeCAD and its CFDof module to model five rotor configurations (15, 20, 25, 30, and 35 blades) under

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Selim, Yasser, Élise Di Lena, Nawaf Abu-Omar, et al. "2022 Canadian Surgery Forum Sept. 15–17, 202201. Operative classification of ventral abdominal hernias: new and practical classification02. Watchful waiting for large primary splenic cysts03. Transversus abdominis plane (TAP) blocks with and without dexamethasone in colorectal surgery04. What factors determine publication of resident research day projects?05. Characterization of near-infrared imaging and indocyanine green use amongst general surgeons06. Variation in opioid prescribing after outpatient breast surgery: Time for a streamlined approach?07. Trends in graduate degree types and research output for Canadian academic general surgeons08. Would you prefer to undergo breast-conserving therapy or a mastectomy for early breast cancer? Comparison of perceptions of general and plastic surgeons09. Lack of representation of women and BIPOC individuals in Canadian academic surgery10. Medical student interest and perspectives on pursuing surgical careers: a multicentre survey evaluating 5-year trends11. Difficult cholecystectomy with cholecystogastric fistula12. Surviving nonsurvivable injuries: patients who elude the “lethal” Abbreviated Injury Scale (AIS) score of six13. Gunshot wounds sustained during legal intervention v. those inflicted by civilians: a comparative analysis14. The impact of delayed time to first head CT on functional outcomes after blunt head trauma with moderately depressed GCS15. Contemporary utility of diagnostic peritoneal aspiration in trauma16. Impact of delayed time to first head CT in traumatic brain injury17. Radiologic predictors of in-hospital mortality after traumatic craniocervical dissociation18. Measurement properties of a patient-reported instrument to evaluate functional status after major surgery19. The safety of venous thromboembolism chemoprophylaxis use in endoscopic retrograde cholangiopancreatography20. Characterizing Canadian rural surgeons: trends over time and 10-year replacement needs21. Contextual interference for skills development and transfer in laparoscopic surgery: a randomized controlled trial22. Evaluating the accuracy and design of visual backgrounds in academic surgical journals23. Defining rural surgery in Canada24. Validity of video-based general and procedure-specific self-assessment tools for surgical trainees in laparoscopic cholecystectomy25. Examining the equity and diversity characteristics of academic general surgeons in Canada26. Video-based coaching for surgical residents: a systematic review and meta-analysis27. Very-low-energy diets prior to nonbariatric surgery: a systematic review and meta-analysis28. Factors associated with resident research success: a descriptive analysis of Canadian general surgery trainees29. Global surgery pilot curriculum in Canadian undergraduate medical education: a novel approach30. How useful is ultrasound in predicting surgical findings of “mild cholecystitis”?31. Implementing a colorectal surgery “virtual hospital”: description of a novel outpatient care pathway to advance surgical care32. Trends in training and workforce planning for Canadian pediatric surgeons: a 10-year model33. Patient perspectives on intraoperative blood transfusion: results of semistructured interviews with perioperative patients34. Understanding intraoperative transfusion decision-making variability: a qualitative study using the Theoretical Domains Framework35. Effectiveness of preoperative oscillating positive expiratory pressure (OPEP) therapy in reduction of postoperative respiratory morbidity in patients undergoing surgery: a systematic review37. Accuracy of point-of-care testing devices for hemoglobin in the operating room: a systematic review and meta-analysis38. Opioid-free analgesia after outpatient general surgery: a qualitative study focused on the perspectives of patients and clinicians involved in a pilot trial39. The impact of the COVID-19 pandemic on general surgery residency: an analysis of operative volumes by residents at a Canadian general surgery residency program40. Postoperative care protocols for elderly emergency surgical patients: a quality improvement initiative42. Adverse events following robotic compared to laparoscopic and open surgery: a population-based analysis43. Is accrual higher for patients randomized to pragmatic v. exploratory randomized clinical trials? A systematic review and meta-analysis44. Effect of preoperative proton-pump inhibitor use on postoperative infectious and renal complications after elective general surgery45. The early burden of COVID-19 in emergency general surgery care across Canada46. Laparoscopic subtotal cholecystectomy for the difficult gallbladder: evolution of technique at a single teaching hospital and retrospective review47. The demand for emergency general surgery in Canada: a public health crisis48. Attitudes of Canadian general surgery staff and residents toward point-of-care ultrasound49. Psychological impact of COVID-19 on Canadian surgical residents50. Validation of an artificial intelligence platform for the guidance of safe laparoscopic cholecystectomy51. Predictors of recurrent appendicitis after nonoperative management: a prospective cohort study52. The effect of the first wave of the COVID-19 pandemic on colorectal and hepatobiliary oncologic outcomes at a tertiary care centre53. Trends in training and workforce representation for Canadian general surgeons working in critical care: a descriptive study54. White presentation: teaching safe opioid prescription and opioid use disorder management in Canadian universities56. How bad is really bad, eh? Impact of the first wave of the COVID-19 pandemic on residents’ operative volume: the experience of a Canadian general surgery program57. Surgeon-specific encounters within a multidisciplinary care pathway: Is there a role for shared care models in surgery?59. A pan-Canadian analysis of approach to treatment for acute appendicitis60. Appendix neoplasm stratified by age: understanding the best treatment for appendicitis61. Predicting acute cholecystitis on final pathology to prioritize surgical urgency: an evaluation of the Tokyo criteria and development of a novel predictive score62. Obesity is an independent predictor of acute renal failure after surgery64. Validation of a clinical decision-making assessment tool in general surgery65. Moral distress in the provision of palliative care delivery for surgical patients in British Columbia: lessons learned from the perspectives of general surgeons66. Delays in presentation and severity of illness predict adverse surgical outcomes among patients transferred from rural Indigenous communities for acute care surgery67. Remote video-based suturing education with smartphones (REVISE): a randomized controlled trial68. Modified Delphi consensus on appropriate use of laboratory investigations in acute care surgery patients72. Impacts of inpatient food at a tertiary care centre on patient satisfaction, nutrition and planetary health73. Racial disparities in health outcomes for oncological surgery in Canada75. Risk of recurrent laryngeal nerve injury from thyroidectomy is lower when intraoperative nerve monitoring (IONM) is used: an analysis of 17 688 patients from the NSQIP database01. The impact of the COVID-19 pandemic on non-smallcell lung cancer pathologic stage and presentation02. Screening criteria evaluation for expansion in pulmonary neoplasias (screen)03. Robotic-assisted lobectomy for early-stage lung cancer provides better patient-reported quality of life than video-assisted lobectomy: early results of the RAVAL trial04. Breathe Anew: designing and testing the feasibility of a novel intervention for lung cancer survivorship05. Learning objectives for thoracic surgery: developing a national standard for undergraduate medical education06. Plasma cell-free DNA as a point-of-care well-being biomarker for early-stage non-small-cell lung cancer patients07. Sarcopenia determined by skeletal muscle index predicts overall survival, disease-free survival and postoperative complications in resectable esophageal cancer: a systematic review and meta-analysis08. The short- and long-term effects of open v. minimally invasive thymectomy in myasthenia gravis patients: a systematic review and meta-analysis09. Optimizing opioid prescribing practices following minimally invasive lung resections through a structured quality improvement process10. Effects of virtual postoperative postdischarge care in patients undergoing lung resection during the COVID-19 pandemic11. Initiating Ethiopia’s first minimally invasive surgery program: a novel approach for collaborations in global surgical education12. Patient outcomes following salvage lung cancer surgery after definitive chemotherapy or radiation13. Replacing chest X-rays after chest tube removal with clinical assessment in postoperative thoracic surgery patients14. Updating the practice of thoracic surgery in Canada: a survey of the Canadian Association of Thoracic Surgeons15. The impact of COVID-19 on the diagnosis and treatment of lung cancer16. Development of a prediction model for survival time in esophageal cancer patients treated with resection17. The development and validation of a mixed reality thoracic surgical anatomy atlas18. Routine placement of feeding tubes should be avoided in esophageal cancer patients undergoing surgery19. Nodal count is no different during robotic segmentectomy compared with robotic lobectomy20. Point-of-care ultrasound-guided percutaneous biopsy of solid masses in the thoracic outpatient clinic: a safe, high-yield procedure to accelerate tissue diagnosis for patients with advanced thoracic malignancy21. Sarcopenia and modified frailty index are not associated with adverse outcomes after esophagectomy for esophageal cancer: a retrospective cohort study22. Near-infrared-guided segmental resection for lung cancer: an analysis of the learning curve23. Routine use of feeding jejunostomy tubes in patients undergoing esophagectomy for esophageal malignancy is safe and associated with low complication rates01. Ghost ileostomy versus loop ileostomy following total mesorectal excision for rectal cancer: a systematic review and meta-analysis02. Analysis of 100 consecutive colorectal cancers presenting at a Canadian tertiary care centre: delayed diagnosis and advanced disease03. Clinical delays and comparative outcomes in younger and older adults with colorectal cancer: a systematic review04. Recurrence rates of rectal cancer after transanal total mesorectal excision (taTME): a systematic review and meta-analysis05. Transanal total mesorectal excision for abdominoperineal resection (taTME-APR) is associated with poor oncological outcomes in rectal cancer patients: a word of caution from a multicentric Canadian cohort study06. Association between survival and receipt of recommended and timely treatment in locally advanced rectal cancer: a population-based study07. Trends and the impact of incomplete preoperative staging in rectal cancer08. Postoperative outcomes after elective colorectal surgery in patients with cirrhosis09. Bowel stimulation before loop ileostomy closure to reduce postoperative ileus: a multicentre, single-blinded, randomized controlled trial10. Recurrence following perineal rectosigmoidectomy ( Altemeier) with levatorplasty: a systematic review and meta-analysis11. Nonmodifiable risk factors and receipt of surveillance investigations following treatment of rectal cancer12. Safety and effectiveness of endoscopic full-thickness resection for the management of colorectal lesions: a systematic review and meta-analysis13. Impact of preoperative carbohydrate loading before colectomy: a systematic review and meta-analysis of randomized controlled trials14. Statin therapy in patients undergoing short-course neoadjuvant radiotherapy for rectal cancer15. Feasibility of targeted lymphadenectomy during complete mesocolic excision for colon cancer using indocyanine green immunofluorescence lymphatic mapping16. Feasibility of expanding an ambulatory colectomy protocol: a retrospective analysis of early discharge following minimally invasive colectomy in an enhanced recovery pathway17. Impact of rectal cancer on bowel dysfunction before treatment and its relationship with post-treatment function18. Canadian cost–utility analysis of artificial-intelligence-assisted colonoscopy for adenoma detection in fecal immunochemical-based colorectal cancer screening19. A comparison of outcomes following intracorporeal and extracorporeal anastomotic techniques in laparoscopic right colectomies20. Assessment of metabolic signatures using desorption electrospray ionization mass spectrometry (DESI) and rapid evaporative ionization mass spectrometry (REIMS) of rectal cancer samples to assist in determining treatment response21. The association between hospital characteristics and minimally invasive rectal cancer surgery: a population-based study22. Cancer centre level designation and the impact on treatment and outcomes in those with rectal cancer: a population-based study23. Oncological outcomes after colorectal cancer in patients with liver cirrhosis: a systematic review and meta-analysis24. Optimal preoperative nutrition for penetrating Crohn disease: a systematic review and meta-analysis25. Lymph node ratio as a predictor of survival for colon cancer: a systematic review and meta-analysis26. Barriers and facilitators for use of new recommendations for optimal endoscopic localization of colorectal neoplasms according to gastroenterologists and surgeons27. Emergency colorectal surgery in patients with cirrhosis: a population-based descriptive study28. Local recurrence rates and associated risk factors after transanal endoscopic microsurgery for benign polyps and adenocarcinomas29. Bowel dysfunction impacts mental health after restorative proctectomy for rectal cancer30. Evolution of psychological morbidity following restorative proctectomy for rectal cancer: a systematic review and meta-analysis31. Frailty predicts LARS and quality of life in rectal cancer survivors after restorative proctectomy32. Low anterior resection syndrome in a reference North American population: prevalence and predictive factors33. The evolution of enhanced recovery: same day discharge after laparoscopic colectomy34. Effect of ERAS protocols on length of stay after colorectal surgery: an interrupted time series analysis35. Practice patterns and outcomes in individuals with cirrhosis and colorectal cancer: a population-based study36. Understanding the impact of bowel function on quality of life after rectal cancer surgery37. Right-sided colectomies for diverticulitis have worse outcomes compared with left-sided colectomies38. Symptom burden and time from symptom onset to cancer diagnosis in patients with early-onset colorectal cancer39. The impact of access to robotic rectal surgery at a tertiary care centre: a Canadian perspective40. Management of rectal neuroendocrine tumours by transanal endoscopic microsurgery41. The gut microbiota modulates colorectal anastomotic healing in patients undergoing surgery for colorectal cancer42. Is there added risk of complications for concomitant procedures during an ileocolic resection for Crohn disease?43. Cost of stoma-related hospital readmissions for rectal cancer patients following restorative proctectomy with a diverting loop ileostomy: a nationwide readmissions database analysis44. Older age associated with quality of rectal cancer care: an ACS-NSQIP database study45. Outcomes of patients undergoing elective bowel resection before and after implementation of an anemia screening and treatment program47. Loop ileostomy closure as a 23-hour stay procedure: a randomized controlled trial48. Extended duration perioperative thromboprophylaxis with low-molecular-weight heparin to improve disease-free survival following surgical resection of colorectal cancer: a multicentre randomized controlled trial (PERIOP-01 Trial)49. Three-stage versus modified 2-stage ileal pouch anal anastomosis: perioperative outcomes, function and quality of life50. Compliance with extended venous thromboembolism prophylaxis in rectal cancer51. Extended-duration venous thromboembolism prophylaxis after diversion in rectal cancer52. Financial and occupational impact of low anterior resection syndrome: a qualitative study53. Nonoperative management for rectal cancer: patient perspectives54. Trends in ileostomy-related emergency department visits for rectal cancer patients55. Long-term implications of treatment of fecal incontinence: a single Canadian centre’s retrospective cohort study: a 17-year follow-up56. Externally benchmarking colorectal resection outcomes in our province against the ACS NSQIP risk calculator: identifying opportunities for improvement57. Externally benchmarking our provincial colectomy outcomes against the ACS NSQIP using the Codman Score: to identify possible opportunities for improvement of outcomes58. Rural v. urban documentation of recommended practices for optimal endoscopic colorectal lesion localization01. Incidence of in-hospital opioid use and pain after inguinal hernia repair02. Ventral hernia repair following liver transplantation: outcome of repair techniques and risk factors for recurrence01. Impact of the COVID-19 pandemic on bariatric surgery in North America: a retrospective analysis of 834 647 patients02. Patient selection and 30-day outcomes of SADI-S compared to RYGB: a retrospective cohort study of 47 375 patients03. New persistent opioid use following bariatric surgery: a systematic review and pooled proportion meta-analysis04. Bariatric surgery should be offered to active-duty military personnel: a retrospective study of the Canadian Armed Forces experience05. Opioid prescribing practices and use following bariatric surgery: a systematic review and pooled summary of data06. Sacred sharing circles: urban Indigenous Manitobans’ experiences with bariatric surgery07. Gastrogastric hernia after laparoscopic gastric great curve plication: a video presentation08. Characterization of comorbidities predictive of bariatric surgery09. Efficacy of preoperative high-dose liraglutide in patients with superobesity10. The effect of linear stapled gastrojejunostomy size in Roux-en-Y gastric bypass11. Fragility of statistically significant outcomes in randomized trials comparing bariatric surgeries12. Weight loss outcomes for patients undergoing conversion to Roux-en-Y gastric bypass after sleeve gastrectomy13. Are long waiting lists for bariatric surgery detrimental to patients? A single-centre experience14. Does upper gastrointestinal swallow study after bariatric surgery lead to earlier detection of leak?15. Pharmaceutical utilization before and after bariatric surgery16. Same-day discharge Roux-en-Y gastric bypass at a Canadian bariatric centre: pathway implementation and early experiences17. Safety and efficiency of performing primary bariatric surgery at an ambulatory site of a tertiary care hospital: a 5-year experience18. Impact of psychiatric diagnosis on weight loss outcomes 3 years after bariatric surgery19. Ursodeoxycholic acid (UDCA) for prevention of gallstone disease after laparoscopic sleeve gastrectomy (LSG): an Atlantic Canada perspective20. Fecal microbial transplantation and fibre supplementation in patients with severe obesity and metabolic syndrome: a randomized double-blind, placebo-controlled phase 2 trial01. Incidence, timing and outcomes of venous thromboembolism in patients undergoing surgery for esophagogastric cancer: a population-based cohort study04. Omission of axillary staging and survival in elderly women with early-stage breast cancer: a population-based cohort study05. Patients’ experiences receiving cancer surgery during the COVID-19 pandemic: a qualitative study06. Cancer surgery outcomes are better at high-volume centres07. Attitudes of Canadian colorectal cancer care providers toward liver transplantation for colorectal liver metastases: a national survey08. Quality of narrative central and lateral neck dissection reports for thyroid cancer treatment suggests need for a national standardized synoptic operative template09. Transoral endoscopic thyroidectomy vestibular approach (TOETVA): indications and technique10. Temporal trends in lymph node assessment as a quality indicator in colorectal cancer patients treated at a high-volume Canadian centre11. Molecular landscape of early-stage breast cancer with nodal metastasis12. Beta testing of a risk-stratified patient decision aid to facilitate shared decision making for postoperative extended thromboprophylaxis in patients undergoing major abdominal surgery for cancer13. Breast reconstruction use and impact on oncologic outcomes among inflammatory breast cancer patients: a systematic review14. Association between patient-reported symptoms and health care resource utilization: a first step to develop patient-centred value measures in cancer care15. Complications after colorectal liver metastases resection in Newfoundland and Labrador16. Why do patients with nonmetastatic primary retroperitoneal sarcoma not undergo resection?17. Loss ofFAM46Cexpression predicts inferior postresection survival and induces ion channelopathy in gastric adenocarcinoma18. Liver-directed therapy of neuroendocrine liver metastases19. Neoadjuvant pembrolizumab use in microsatellite instability high (MSI-H) rectal cancer: benefits of its use in lynch syndrome20. MOLLI for excision of nonpalpable breast lesions: a case series22. Patients awaiting mastectomy report increased depression, anxiety, and decreased quality of life compared with patients awaiting lumpectomy for treatment of breast cancer23. Is microscopic margin status important in retroperitoneal sarcoma (RPS) resection? A systematic review and meta-analysis24. Absence of benefit of routine surveillance in very-low-risk and low-risk gastric gastrointestinal stromal tumors25. Effect of intraoperative in-room specimen radiography on margin status in breast-conserving surgery26. Active surveillance for DCIS of the breast: qualitative interviews with patients and physicians01 Outcomes following extrahepatic and intraportal pancreatic islet transplantation: a comparative cohort study02. Cholang-funga-gitis03. Evaluating the effect of a low-calorie prehepatectomy diet on perioperative outcomes: a systematic review and meta-analysis04. Toxicity profiles of systemic therapy for advanced hepatocellular carcinoma: a systematic review to guide neoadjuvant trials05. Should cell salvage be used in liver resection and transplantation? A systematic review and meta-analysis06. The association between surgeon and hospital variation in use of laparoscopic liver resection and short-term outcomes07. Systematic review and meta-analysis of prognostic factors for early recurrence in intrahepatic cholangiocarcinoma after curative-intent resection08. Impact of neoadjuvant chemotherapy on postoperative outcomes of patients undergoing hepatectomy for intrahepatic cholangiocarcinoma: ACS-NSQIP propensity-matched analysis09. The impact of prophylactic negative pressure wound therapy on surgical site infections in pancreatic resection: a systematic review and meta-analysis10. Does hepatic pedicle clamping increase the risk of colonic anastomotic leak after combined hepatectomy and colectomy? Analysis of the ACS NSQIP database11. Development of a culture process to grow a full-liver tissue substitute12. Liver transplantation for fibrolamellar hepatocellular carcinoma: an analysis of the European Liver Transplant Registry13. Arming beneficial viruses to treat pancreatic cancer14. Hepaticoduodenostomy versus hepaticojenunostomy for biliary reconstruction: a retrospective review of a single-centre experience15. Feasibility and safety of a “shared care” model in complex hepatopancreatobiliary surgery: a 5-year analysis of pancreaticoduodenectomy16. Laparoscopic v. open pancreaticoduodenectomy: initial institutional experience and NSQIP-matched analysis17. Laparoscopic spleen-preserving distal pancreatectomy: Why not do a Warshaw?18. The impact of COVID-19 on pancreaticoduodenectomy outcomes in a high-volume hepatopancreatobiliary centre19. Transitioning from open to minimally invasive pancreaticoduodenectomy: the learning curve factor in an academic centre20. Closed-incision negative-pressure wound therapy following pancreaticoduodenectomy for prevention of surgical site infections in high-risk patients21. Robotic Appleby procedure for recurrent pancreatic cancer22. The influence of viral hepatitis status on posthepatectomy complications in patients with hepatocellular carcinoma: a NSQIP analysis." Canadian Journal of Surgery 65, no. 6 Suppl 2 (2022): S33—S111. http://dx.doi.org/10.1503/cjs.014322.

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Ramos, H. M. "Low-Head Energy Conversion: A Conceptual Design and Laboratory Investigation of a Microtubular Hydro Propeller." August 31, 2012. https://doi.org/10.5402/2012/846206.

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Low-head microhydro systems for energy production are becoming accepted because of oil crises and new advances in their design and efficiencies. As this is still a new area for development and experimentation, it is important to test and validate the optimal conditions and the hydrodynamic behaviour of such systems under different conditions. The aim of this paper is to present a turbine design validation practise, which researchers and equipment manufactures can use for the hydrodynamic behaviour analysis of new low-head turbines prior to production and application. Laboratory experimental te

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Contestabile, Pasquale, Luigi Rubino, Gaetano Crispino, et al. "A NEW SEAWATER LOW-HEAD TURBINE FOR THE OBREC." Proceedings of the European Wave and Tidal Energy Conference 15 (September 2, 2023). http://dx.doi.org/10.36688/ewtec-2023-548.

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The OBREC (Overtopping Breakwater for wave Energy Conversion) is based on the overtopping phenomenon [1] where incoming waves run over an overtopping ramp and fall into a reservoir located above the sea level inside a conventional rubble mound breakwater, or into a vertical caisson breakwater. The wave energy is transformed into potential energy, with some contribution of kinetic energy. Then, the flow is driven through a turbine addressing the final transformation into electrical energy. The OBREC prototype is located in the middle of the San Vincenzo breakwater, in Naples harbour (Italy). Th

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Shabara, H. M., O. B. Yaakob, Yasser M. Ahmed, A. H. Elbatran, and Muhammad S. M. Faddir. "CFD Validation for Efficient Gravitational Vortex Pool System." Jurnal Teknologi 74, no. 5 (2015). http://dx.doi.org/10.11113/jt.v74.4648.

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Mini hydropower plants are expected to have good potential for providing electricity to remote communities. An important part of this economic and clean energy system is the conversion of the low-head potential energy into kinetic energy to drive power turbines. One way of converting the low-head potential energy is using a gravitation vortex pool. This study describes work to optimize the vortex pool to improve energy conversion and hence generate electricity from low water heads of between 0.7 m to 3 m. The commercial Computational Fluid Dynamics (CFD) code ANSYS Fluent was used in this stud

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Shabara, H. M., O. B. Yaakob, Yasser M. Ahmed, and A. H. Elbatran. "CFD Simulation of Water Gravitation Vortex Pool Flow for Mini Hydropower Plants." Jurnal Teknologi 74, no. 5 (2015). http://dx.doi.org/10.11113/jt.v74.4645.

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Mini hydropower plants can be expected to have a good potential to provide electricity to remote communities. An important part of this economic and clean energy system is the conversion of the low-head potential energy into kinetic energy to drive the power turbines. One way of converting the low-head potential energy is using a gravitation vortex pool. This paper describes work to optimize the vortex pool to improve energy conversion and hence generate electricity from low heads of between 0.7 m to 3 m. The commercial Computational Fluid Dynamics (CFD) code ANSYS Fluent was used in this stud

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Musthapa, Muhammad Fikri, Azfarizal Mukhtar, Mohamad Fariz Mohamed Nasir, and Ahmad Faiz Tharima. "Numerical Simulation of Micro Gravitational Hydro-turbine for Alternative Renewable Energy Resources in Rural Area." INTI Journal 2020, no. 1 (2020). https://doi.org/10.61453/intij.202016.

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Hydropower is one of the most reliable and efficient sources for the clean generation of renewable energy. The increase of energy demand in developing countries has caused the extensive grow of hydropower development. In this light, the usage of low head hydro vortex turbine has been considered as a solution for the shortage of energy supply in rural areas. To alleviate the shortage of energy supply, it is essential to fabricate a Micro Gravitational Hydro-turbine which allows the conversion of energy in a moving fluid to rotational energy through the use of low head and low flow rate with a r

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Wu, Yanzhao, Ran Tao, Di Zhu, Zhifeng Yao, and Ruofu Xiao. "A machine-learning approach to predicting the energy conversion performance of centrifugal pump impeller influenced by blade profile." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, August 28, 2021, 095440622110282. http://dx.doi.org/10.1177/09544062211028264.

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Centrifugal pump is a kind of energy conversion machine for fluid delivering. It transfers the mechanical energy of impeller to the potential and kinetic energy of fluid. As a key factor in influencing the energy conversion performance of centrifugal pump, blade profile design is crucial. Traditional design concepts have ideal assumptions. To have a better design guidance, machine-learning based on neural network is used in this study. A typical centrifugal pump with simplified blade profile is numerically studied with experimental validation for a better discussion. Statistical results show t

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Blantin, Jason R., Marc D. Polanka, Joseph K. Ausserer, Paul J. Litke, and Jacob A. Baranski. "Energy Balance and Power Loss Pathway Study of a 120 cc Four-Stroke Internal Combustion Engine." Journal of Engineering for Gas Turbines and Power 140, no. 7 (2018). http://dx.doi.org/10.1115/1.4038881.

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Efforts to improve the range and endurance of group 2 (10–25 kg), internal combustion engine (ICE) powered unmanned aerial vehicles (UAVs) have been underway for several years at Air Force Research Laboratory (AFRL). To obtain the desired performance improvements, research into improving the overall efficiency of the ICE powerplants is of great interest. The high specific energy of hydrocarbon fuels (13,000 W h/kg for gasoline), but low fuel conversion efficiency for small ICEs means that relatively minor improvements in the fuel conversion efficiency of the engines can yield large improvement

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Cao, Qi, Fan Zhang, Ke Chen, Lufeng Zhu, Zhengxuan Xu, and Desmond Appiah. "Influence of side channel inlet angle on energy conversion of a side channel pump." Physics of Fluids 36, no. 12 (2024). https://doi.org/10.1063/5.0243620.

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The side channel pump generates several disadvantage vortices due to abrupt structural changes at the junction of the impeller and side channel, leading to unstable flow, which may induce severe vortex cavitation at the inlet section of the side channel, its impact on the pump's unstable flow mechanism and on the energy conversion characteristics has yet to be thoroughly investigated. This paper explores the effect of backflow vortex on pump performance through optimizing side channel inlet angles by combining the Ω criterion, helicity, and entropy production methods. The computational fluid d

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Wei, Junying, Qi Hua, Liang Yuan, Gang Li, Jihong Wang, and Jidai Wang. "A review of the research status of scroll expander." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, June 14, 2022, 095765092211092. http://dx.doi.org/10.1177/09576509221109245.

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In order to solve the problem of energy crisis and take the road of sustainable development, the development of renewable energy and recycling of low-grade waste heat have attracted more and more attention. As a new type of volumetric energy conversion device, scroll expander is wi dely used in Organic Rankine Cycle (ORC) waste heat recovery, because of its advantages such as small size and so on. Scroll profile is one of the main factors affecting scroll expander performance. Compared with the traditional constant section scroll profile with same suction volume, volume ratio and shell size, t

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Quan, Hui, Xueling Yang, Xiaoyi Liu, Chenxi Sun, and Jianying Lan. "Research on energy conversion characteristics in impeller of Helico-Axial Multiphase Pump during crude transportation." Physics of Fluids, January 31, 2023. http://dx.doi.org/10.1063/5.0140739.

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In order to explore the influence of different crude viscosity on the energy conversion characteristics of impeller of Helical-Axial Multiphase Pump, it was carried out numerical simulation which based on the standard k-ε equation and Euler multiphase flow model under different viscosity. At the same time, Helical-Axial Multiphase Pump was analyzed internal flow structure of by experiments when transported water. The changes of pressure, GVF（gas volume fraction）, flow field and pressurization are obtained in impeller with different viscosity and IGVF（inlet gas volume fraction）.The results show

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Vardanyan, H. R. "ԿԵՆՍԱԷՄՈՒԼԳԱՏՈՐՆԵՐԻ ԵՎ L-ԿԱՐՆԻՏԻՆԻ ՕԳՏԱԳՈՐԾՄԱՆ ԱՐԴՅՈՒՆԱՎԵՏՈՒԹՅԱՆ ՈՐՈՇՈՒՄԸ ԲՐՈՅԼԵՐՆԵՐԻ ՑԱԾՐ ԿԱԼՈՐԻԱԿԱՆՈՒԹՅԱՄԲ ԿԵՐԱԲԱԺԻՆՆԵՐՈՒՄ". AgriScience and Technology, 2023, 81–85. http://dx.doi.org/10.52276/25792822-2023.1-81.

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During the research aimed at reducing the cost price of poultry feed and increasing their productivity lysofort bio-emulator and L-carnitine supplement were used. 4 groups of ROSS-308 broilers were made (100 heads each). The control group received feed portion corresponding to the nutrition value of ROSS-308 cross boiler feed, containing defined content of exchange energy (in the initial phase-3050 kcal/kg, in the growth period-3100 kcal/kg, and in the final stage-3200 kcal/kg). In the experimental groups, the efficiency of the exchange energy was artificially reduced, mostly due to low conten

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Ashenafi, Mebrat, Yilma Tadesse, and Asfaw Beyene. "Conversion of Thermally Amplified Hydraulic Shock for Power Generation: Modeling and Experimental Analyses." Journal of Energy Resources Technology, June 16, 2022, 1–24. http://dx.doi.org/10.1115/1.4054826.

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Abstract Hydraulic shock, also colloquially known as hydram, or hydraulic ram pump, or water hammer, or fluid hammer is high-pressure shock wave that propagates at the speed of sound through a piping system when a fluid in motion is forced to change direction or stop abruptly. This destructive force can be converted into useful work, i.e., to pump the water to higher elevation, thereby increasing its potential energy, i.e., lifts the water using the high-pressure shockwave. Its low performance combined with affordability of fuels has put this otherwise longstanding technology in the backburner

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Zhao, Haoru, Fujun Wang, Chaoyue Wang, and Benhong Wang. "Investigation on the hump region generation mechanism of pump mode in low-head pumped hydro storage unit." Physics of Fluids, November 4, 2022. http://dx.doi.org/10.1063/5.0130836.

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The pump mode of the low-head pumped hydro storage unit (pump-turbine) may operate in the hump region under extreme conditions due to the influence of water level variation, and the resulting energy conversion instability will seriously threaten the safety of the unit. However, the generation mechanism of the hump region is still not sufficiently understood, which is mainly due to two reasons: the dominant unstable flow structures that induce the formation of the hump region have not been uniformly recognized, and the influence of the dominant unstable flow structures on the impeller's working

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