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787 Results Found

  • Article
  • Open Access
7 Citations
2,138 Views
27 Pages

12 December 2022

(1) Background: In sprinkler irrigation systems, the water distribution and droplet kinetic energy are affected by the shape of the nozzle. In this paper, the effects of working pressure and aspect ratio (L/D) of circular and non-circular nozzles (di...

  • Article
  • Open Access
2,451 Views
18 Pages

A supercritical suspended abrasive water jet with dual inputs of pressure and heat is proposed to improve the cutting performance of the conventional suspended abrasive water jet in deep-sea environments. The paper studies the flow and kinetic charac...

  • Article
  • Open Access
1 Citations
730 Views
15 Pages

Kinetics of Reduction of Iron Ore Powder by Industrial Lignin from Pulping and Papermaking Waste Biomass Energy

  • Wendi Zhou,
  • Dongwen Xiang,
  • Qiang Zhang,
  • Guoqing Wu,
  • Yajie Wang,
  • Dong Li,
  • Qinghua Zhang and
  • Huaxin Hu

17 February 2025

To explore the application of industrial lignin, a waste biomass resource, in the field of metallurgy, the kinetic behavior of iron ore powder reduction by Shenmu bituminous coal, Lu’an anthracite, and industrial lignin under different carbon&n...

  • Article
  • Open Access
60 Citations
7,649 Views
16 Pages

Effect of the Substrate to Inoculum Ratios on the Kinetics of Biogas Production during the Mesophilic Anaerobic Digestion of Food Waste

  • Aakash Khadka,
  • Anmol Parajuli,
  • Sheila Dangol,
  • Bijay Thapa,
  • Lokesh Sapkota,
  • Alessandro A. Carmona-Martínez and
  • Anish Ghimire

24 January 2022

This study evaluates the effects of the varying substrate to inoculum ratios (S:I) of 0.5, 1, 2, 3, 4, 5, and 6 (volatile solids/VS basis) on the kinetics of biogas production during batch mesophilic (35 ± 1 °C) anaerobic digestion (AD) of...

  • Article
  • Open Access
6 Citations
3,357 Views
23 Pages

Influence of Molasses Residue on Treatment of Cow Manure in an Anaerobic Filter with Perforated Weed Membrane and a Conventional Reactor: Variations of Organic Loading and a Machine Learning Application

  • Khairina Jaman,
  • Syazwani Idrus,
  • Abdul Malek Abdul Wahab,
  • Razif Harun,
  • Nik Norsyahariati Nik Daud,
  • Amimul Ahsan,
  • Shahriar Shams and
  • Md. Alhaz Uddin

27 January 2023

This study highlighted the influence of molasses residue (MR) on the anaerobic treatment of cow manure (CM) at various organic loading and mixing ratios of these two substrates. Further investigation was conducted on a model-fitting comparison betwee...

  • Article
  • Open Access
4 Citations
2,341 Views
19 Pages

The vertical eddy viscosity coefficient (VEVC) is an important parameter used in ocean dynamics studies to describe the intensity of mixing in the vertical direction and the process of momentum transport. In this paper, an adjoint assimilation method...

  • Feature Paper
  • Letter
  • Open Access
2 Citations
3,537 Views
9 Pages

5 December 2019

Deterministic–stochastic empirical mode decomposition (EMD) is used to obtain low-frequency (non-diffusive; i.e., background velocity) and high-frequency (diffusive; i.e., eddies) components from a Lagrangian drifter‘s trajectory. Eddy ch...

  • Article
  • Open Access
5 Citations
2,650 Views
25 Pages

17 November 2020

There exists a correlation in the flow movement between the front and back bends of a continuous bend, and the change in the transition section configuration influences this correlation. In this paper, laboratory experiments were conducted to systema...

  • Article
  • Open Access
4 Citations
2,874 Views
24 Pages

Mid-Channel Braid-Bar-Induced Turbulent Bursts: Analysis Using Octant Events Approach

  • Mohammad Amir Khan,
  • Nayan Sharma,
  • Jaan H. Pu,
  • Faisal M. Alfaisal,
  • Shamshad Alam,
  • Rishav Garg and
  • Mohammad Obaid Qamar

2 February 2022

In a laboratory, a model of a mid-channel bar is built to study the turbulent flow structures in its vicinity. The present study on the turbulent flow structure around a mid-channel bar is based on unravelling the fluvial fluxes triggered by the bar&...

  • Article
  • Open Access
3 Citations
2,732 Views
24 Pages

Analysis of Turbulent Flow Structure with Its Fluvial Processes around Mid-Channel Bar

  • Md. Amir Khan,
  • Nayan Sharma,
  • Jaan Pu,
  • Faisal M. Alfaisal,
  • Shamshad Alam and
  • Wahaj Ahmad Khan

30 December 2021

Researchers have recognized that the successive growth of mid-channel bar deposits can be entertained as the raison d’être for the initiation of the braiding process, which is closely interlinked with the growth, decay, and vertical distr...

  • Article
  • Open Access
2 Citations
2,375 Views
17 Pages

19 August 2024

The quest for clean, efficient engine technologies is imperative in reducing transportation’s environmental impact. Hydrogen, as a zero-emission fuel, offers significant potential for internal combustion engines but faces challenges such as opt...

  • Article
  • Open Access
1,742 Views
13 Pages

10 January 2023

The energy supply effect caused by the stiffness difference between roofs and sidewalls is an important factor that induces strain coal bursts. In order to quantitatively reveal the energy supply mechanism of strain coal bursts, this paper first esta...

  • Article
  • Open Access
8 Citations
2,140 Views
11 Pages

14 October 2021

The diurnal hourly dynamics of the kinetic energy flux density vector, called the Umov vector, and the mean and turbulent components of the kinetic energy are estimated from minisodar measurements of wind vector components and their variances in the...

  • Article
  • Open Access
349 Views
20 Pages

Bioenergy Potential of Anaerobic Co-Digestion of Aquaponics Effluent and Cattle Manure

  • Alexia de Sousa Gomes,
  • Juliana Lobo Paes,
  • Daiane Cecchin,
  • Regina Menino,
  • Igor Ferreira Oliva,
  • João Paulo Barreto Cunha and
  • Flavia Lucila Tonani

Mathematical modeling is a key tool for describing and predicting the dynamic behavior of anaerobic digestion. Studies combining the co-digestion of aquaponics effluent (AE) and cattle manure (CM) with kinetic modeling remain scarce, particularly reg...

  • Article
  • Open Access
4 Citations
1,650 Views
17 Pages

29 January 2024

Log-Conformation Representation (LCR) method effectively enhances the stability of viscoelastic fluid flow driven by a cavity at high Wi numbers. However, its stability is relatively poor under low viscosity ratio conditions. In this study, three mom...

  • Article
  • Open Access
18 Citations
3,835 Views
20 Pages

Biodiesel Production through Acid Catalyst In Situ Reactive Extraction of Chlorella vulgaris Foamate

  • Shurooq T. Al-Humairi,
  • Jonathan G. M. Lee,
  • Musa Salihu and
  • Adam P. Harvey

20 June 2022

A method of biodiesel production from the freshwater microalgae Chlorella vulgaris based on the conversion of the dewatered algal biomass from a foam column (“foamate”) was investigated. The foam column collected and concentrated the micr...

  • Article
  • Open Access
4 Citations
2,515 Views
12 Pages

10 June 2022

During the steel continuous casting, the submerged entry nozzle (SEN) plays a crucial role in the fluid characteristic of fluid steel, which further affects the slab quality. In this paper, a nozzle model is developed to study the influences of nozzl...

  • Article
  • Open Access
35 Citations
8,402 Views
15 Pages

Biomass Steam Gasification: A Comparison of Syngas Composition between a 1-D MATLAB Kinetic Model and a 0-D Aspen Plus Quasi-Equilibrium Model

  • Vera Marcantonio,
  • Andrea Monforti Ferrario,
  • Andrea Di Carlo,
  • Luca Del Zotto,
  • Danilo Monarca and
  • Enrico Bocci

Biomass is one of the most widespread and accessible energy source and steam gasification is one of the most important processes to convert biomass into combustible gases. However, to date the difference of results between the main models used to pre...

  • Article
  • Open Access
6 Citations
1,851 Views
20 Pages

Impact Resistance of Aluminum Foam Composites with Filler and Coating Materials

  • Yue Wu,
  • Yulin Guo,
  • Songwen Yi,
  • Zhuwen Lv and
  • Zhiqiang Fan

26 November 2024

The main objective of this study is to analyze the impact resistance of aluminum foam composites containing fillers and coatings and to investigate the effect of different thickness ratios of the composites on this capability. We prepared composites...

  • Article
  • Open Access
10 Citations
3,953 Views
12 Pages

Kinetics of Arsenic Removal in Waste Acid by the Combination of CuSO4 and Zero-Valent Iron

  • Yunhao Xi,
  • Yongguang Luo,
  • Jingtian Zou,
  • Jing Li,
  • Tianqi Liao,
  • Libo Zhang,
  • Chen Wang,
  • Xiteng Li and
  • Guo Lin

28 June 2019

In this study, we investigated the kinetics of arsenic removal from waste acid by the combination of zero-valent iron (ZVI) and CuSO4. ZVI samples were characterized by X-ray diffraction and scanning electron microscopy before and after arsenic remov...

  • Article
  • Open Access
3 Citations
2,093 Views
13 Pages

Mixed-Combustion Characteristics and Reaction Kinetics of Municipal Sludge and Corn Straw in Micro-Fluidized Bed

  • Shengjie Guo,
  • Jinhui Tan,
  • Zhongguo Yang,
  • Shuhui Deng,
  • Yaxuan Wang and
  • Shuai Guo

4 April 2022

With economic development, the output of municipal sludge (MS) continues to increase, and the effective utilization of corn straw (CS) also plays an important role in promoting “carbon neutrality”. The mixed combustion of solid wastes is a very envir...

  • Article
  • Open Access
1 Citations
1,908 Views
25 Pages

27 May 2023

Through conducting a comparative experimental study of small-aspect-ratio isolated structure models on multi-layered soft soil foundations and rigid foundations, this paper investigates the influence of soil–structure interaction (SSI) effects...

  • Communication
  • Open Access
10 Citations
2,444 Views
11 Pages

Effect of the Ni-to-CaO Ratio on Integrated CO2 Capture and Direct Methanation

  • Jin-Hyeok Woo,
  • Seongbin Jo,
  • Ju-Eon Kim,
  • Tae-Young Kim,
  • Han-Dong Son,
  • Ho-Jung Ryu,
  • Byungwook Hwang,
  • Jae-Chang Kim,
  • Soo-Chool Lee and
  • Kandis Leslie Gilliard-AbdulAziz

31 July 2023

Direct methanation in an integrated CO2 capture and utilization system has recently gained considerable attention as a promising approach owing to its simplified process and lower requirement of total thermal energy as compared to conventional CO2 ca...

  • Article
  • Open Access
1 Citations
2,529 Views
14 Pages

23 August 2024

Acid-leached gangue residue is produced after the gangue extraction of metal ions; the main component is silicon, which can be used to extract silica. To ascertain the kinetics and mechanism of silica extraction from acid-leached coal gangue residue,...

  • Article
  • Open Access
1 Citations
2,628 Views
10 Pages

9 November 2022

Human locomotion involves the modulation of whole-body mechanical energy, which can be approximated by the motion dynamics at the body’s center of mass (BCOM). This study introduces a new method to measure gait efficiency based on BCOM oscillat...

  • Article
  • Open Access
633 Views
23 Pages

15 August 2025

The destabilizing damage of rock structures in coal beds engineering is greatly influenced by the bearing rupture features and energy evolution laws of rock–coal assemblages with varying height ratios. In this study, we used PFC3D to create roc...

  • Article
  • Open Access
4 Citations
2,337 Views
11 Pages

12 September 2022

Previous studies have successfully assessed the extent to which a kinetic model accurately represents a specific reaction mechanism by comparing the kinetic parameters derived from the kinetic model to those obtained using isoconversional methods. Ho...

  • Article
  • Open Access
7 Citations
3,310 Views
14 Pages

Influence of Feed Rate on the Performance of Hydrocyclone Flow Field

  • Yuekan Zhang,
  • Mingyuan Xu,
  • Yaoxu Duan,
  • Xinghua Yang,
  • Junru Yang and
  • Xiangcheng Tang

In order to clarify the influence of feed rate on a hydrocyclone flow field, numerical simulation was employed to model the influence of feed rate on the pressure field, velocity field, air column, turbulent kinetic energy, and split ratio. The resul...

  • Article
  • Open Access
7 Citations
3,271 Views
14 Pages

Dissolution Kinetics of Chlorine from Iron Ore Sintering Dust

  • Honghu Tang,
  • Lihua Zhao,
  • Yue Yang,
  • Haisheng Han,
  • Li Wang and
  • Wei Sun

26 July 2021

Chlorine is generated during iron ore sintering, mostly in the form of alkali chlorides and primarily accumulates in sintering dust, which must be removed before reusing. In this study, an in-situ monitor leaching system based was designed to detect...

  • Article
  • Open Access
2 Citations
3,174 Views
21 Pages

5 August 2022

In this paper, we revisit a turbulent mixing of gas and air in a gas burner with computational fluid dynamics (CFD) models. The quality of such a turbulent mixture is based on temperature, pressure, and velocity distributions as well as the distribut...

  • Article
  • Open Access
10 Citations
4,739 Views
20 Pages

Computational Study of a Vertical Plunging Jet into Still Water

  • Zegao Yin,
  • Qianqian Jia,
  • Yuan Li,
  • Yanxu Wang and
  • Dejun Yang

26 July 2018

The behavior of a vertical plunging jet was numerically investigated using the coupled Level Set and Volume of Fluid method. The computational results were in good agreement with the experimental results reported in the related literature. Vertical p...

  • Article
  • Open Access
30 Citations
2,643 Views
10 Pages

A Global Inventory of Feedback

  • Timothy M. Heckman and
  • Philip N. Best

24 January 2023

Feedback from both supermassive black holes and massive stars plays a fundamental role in the evolution of galaxies and the inter-galactic medium. In this paper, we use available data to estimate the total amount of kinetic energy and momentum create...

  • Article
  • Open Access
4 Citations
2,378 Views
12 Pages

Effectiveness of Energy Transfer versus Mixing Entropy in Coupled Mechanical–Electrical Oscillators

  • Habilou Ouro-Koura,
  • Zahra Sotoudeh,
  • John Tichy and
  • Diana-Andra Borca-Tasciuc

23 August 2022

Electrostatic energy harvesters convert kinetic energy into electrical energy via variable capacitors. Efforts to improve their power output are hampered by a lack of understanding of the fundamental limit for energy conversion efficiency. In heat en...

  • Article
  • Open Access
4 Citations
2,578 Views
13 Pages

The aim of this study was to reveal an interactive curve-linear relationship between altered carbohydrate macromolecular structure traits of hulless barley cultivars and nutrient utilization, biodegradation, as well as bioavailability. The cultivars...

  • Article
  • Open Access
5 Citations
2,928 Views
14 Pages

8 June 2022

This study proposes a new hybrid wave energy converter composed of a horizontal cylinder and a swing plate to improve the capture width ratio. The horizontal cylinder generates electrical energy by using the potential energy of the incident wave, whe...

  • Article
  • Open Access
2 Citations
3,092 Views
18 Pages

19 November 2024

The pairs of Cu2O/CuO and CoO/Co3O4 as the carriers of transferring oxygen and storing heat are essential for the recently emerged high-temperature thermochemical energy storage (TCES) system. Reported research results of Cu2O and CoO oxidation kinet...

  • Article
  • Open Access
1 Citations
1,029 Views
20 Pages

Fish Swimming Behavior and Strategies Under Different Hydrodynamic Conditions in Fishways with Various Vertical Slot Configurations

  • Lijian Ouyang,
  • Dongqiu Li,
  • Shihao Cui,
  • Xinyang Wu,
  • Yang Liu,
  • Xiaowei Han,
  • Shengzhi Zhou,
  • Gang Xu,
  • Xinggang Tu and
  • Kang Chen
  • + 2 authors

18 August 2025

Vertical slot fishways are a crucial measure to mitigate the blockage of fish migration caused by hydraulic engineering infrastructures, but their passage efficiency is often hindered by the complex interactions between fish behavior and hydrodynamic...

  • Article
  • Open Access
31 Citations
4,936 Views
14 Pages

Enhanced Methane Production from Anaerobic Co-Digestion of Wheat Straw Rice Straw and Sugarcane Bagasse: A Kinetic Analysis

  • Saadia Meraj,
  • Rabia Liaquat,
  • Salman Raza Naqvi,
  • Zeshan Sheikh,
  • Atoofa Zainab,
  • Asif Hussain Khoja,
  • Dagmar Juchelkova and
  • Abdulaziz Atabani

30 June 2021

Future energy and environmental issues are the major driving force towards increased global utilization of biomass, especially in developing countries like Pakistan. Lignocellulosic residues are abundant in Pakistan. The present study investigated th...

  • Article
  • Open Access
1 Citations
2,141 Views
21 Pages

Design of a Flexure-Based Flywheel for the Storage of Angular Momentum and Kinetic Energy

  • Patrick Flückiger,
  • Florent Cosandier,
  • Hubert Schneegans and
  • Simon Henein

30 March 2024

The flywheel is a widespread mechanical component used for the storage of kinetic energy and angular momentum. It typically consists of cylindrical inertia rotating about its axis on rolling bearings, which involves undesired friction, lubrication, a...

  • Article
  • Open Access
13 Citations
2,726 Views
16 Pages

Fluoride Leaching of Titanium from Ti-Bearing Electric Furnace Slag in [NH4+]-[F] Solution

  • Fuqiang Zheng,
  • Yufeng Guo,
  • Feng Chen,
  • Shuai Wang,
  • Jinlai Zhang,
  • Lingzhi Yang and
  • Guanzhou Qiu

24 July 2021

The effects of F− concentration, leaching temperature, and time on the Ti leaching from Ti-bearing electric furnace slag (TEFS) by [NH4+]-[F−] solution leaching process was investigated to reveal the leaching mechanism and kinetics of titanium. The r...

  • Article
  • Open Access
426 Views
17 Pages

Thermogravimetric Analysis of Blended Fuel of Pig Manure, Straw, and Coal

  • Chengzhe Shen,
  • Yan Zhang,
  • Gengsheng Liu,
  • Dongxu Wang,
  • Jinbao Zhang,
  • Kai Yang,
  • Xintong Wen,
  • Quan Sun,
  • Xuejun Dou and
  • Yong Zhang
  • + 2 authors

30 June 2025

This study investigated the combustion performance of pig manure, straw, and coal at various blending ratios using thermogravimetric analysis. The synergistic effect of coal and pig manure at various ratios was analyzed, and kinetic analysis was perf...

  • Review
  • Open Access
119 Citations
14,051 Views
19 Pages

A Review on the Kinetics of Iron Ore Reduction by Hydrogen

  • Aidin Heidari,
  • Niusha Niknahad,
  • Mikko Iljana and
  • Timo Fabritius

9 December 2021

A clean energy revolution is occurring across the world. As iron and steelmaking have a tremendous impact on the amount of CO2 emissions, there is an increasing attraction towards improving the green footprint of iron and steel production. Among redu...

  • Article
  • Open Access
2 Citations
453 Views
26 Pages

26 June 2025

In this study, we discuss a series of eight energy scales, some of which are our own speculations, and fit the logarithms of these energies as a straight line versus a quantity related to the dimensionalities of action terms in a way to be defined in...

  • Article
  • Open Access
11 Citations
7,479 Views
15 Pages

Experimental Assessment of a New Kinetic Turbine Performance for Artificial Channels

  • Cécile Münch-Alligné,
  • Jérémy Schmid,
  • Sylvain Richard,
  • Anthony Gaspoz,
  • Nino Brunner and
  • Vlad Hasmatuchi

13 March 2018

An experimental investigation to measure the performance of a first prototype of a kinetic turbine is presented. This turbine, developed using numerical simulation, recovers the kinetic energy of water in free surface canals. To assess the performanc...

  • Feature Paper
  • Article
  • Open Access
8 Citations
5,439 Views
12 Pages

9 May 2019

Ratios of equilibrium solubilities rarely exceed two-fold for polymorph pairs. A model has been developed based on two intrinsic properties of polymorph pairs, namely the ratio of equilibrium solubilities of the individual pairs (C*me/C*st) and the r...

  • Article
  • Open Access
12 Citations
3,295 Views
17 Pages

26 December 2023

This paper explores the kinetics of the crystallization of potassium sulfate in a stirred bed crystallizer through experimental investigation. Employing classical nucleation theory, the homogeneous and heterogeneous nucleation mechanisms of potassium...

  • Article
  • Open Access
988 Views
16 Pages

Combustion Characteristics of Moxa Floss Under Nitrogen Atmosphere

  • Yukun Feng,
  • Yifan Wu,
  • Pengzhou Du,
  • Yang Ma and
  • Zhaoyi Zhuang

13 June 2025

To investigate the combustion characteristics of moxa under a nitrogen atmosphere, this study employed an integrated approach combining experimental and theoretical analysis. Twelve moxa floss samples with different leaf-to-floss ratios, geographical...

  • Article
  • Open Access
4 Citations
2,104 Views
21 Pages

9 October 2023

In the current work, the operating conditions for the Fischer–Tropsch process were optimized using experimental testing, kinetic modelling, simulation, and optimization. The experiments were carried out using a Ce-Co/SiO2 catalyst to examine ho...

  • Article
  • Open Access
1 Citations
1,517 Views
14 Pages

Multiwave interference plays a crucial role in shaping the spatial variations of internal tides. Based on a combination of in situ mooring and altimeter data, interference of semidiurnal internal tides was investigated in the northern South China Sea...

  • Article
  • Open Access
1,224 Views
16 Pages

15 December 2024

The study conducted isothermal tests for biochar-based N-absorption reaction in Chemical Looping Ammonia Generation to investigate the factors affecting biochar conversion, the kinetic model, and the reaction mechanism. The results show that the N2 g...

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