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Showing 20 of 436 academic articles

Determination of Optimal Principal Ship Dimensions Considering EEDI and Operational Efficiency

Bo-Sung Jung, Seung-Ho Ham • Journal of Marine Science and Engineering (2026)

The determination of principal dimensions in the early ship design stage requires iterative calculations based on the basis ship particulars and ship owner’s requirements, demanding considerable time and engineering effort. In modern shipbu...

DOAJ Open Access (DOAJ) DOI: 10.3390/jmse14100939

Mixed Systems of Quaternary Ammonium Foam Drainage Agent with Carbon Quantum Dots and Silica Nanoparticles for Improved Gas Field Performance

Yongqiang Sun, Yongping Zhang, Anqi Wei, Xin Shan et al. • Nanomaterials (2024)

Foam drainage agents enhance gas production by removing wellbore liquids. However, due to the ultra-high salinity environments of the Hechuan gas field (salinity up to 32.5 × 104 mg/L), no foam drainage agent is suitable for this gas field....

DOAJ Open Access (DOAJ) DOI: 10.3390/nano14191590

Development of functional cookies form wheat-pumpkin seed based composite flour

Feriehiwote Weldeyohanis Gebremariam, Eneyew Tadesse Melaku, Venkatesa Prabhu Sundramurthy, Henock Woldemichael Woldemariam • Heliyon (2024)

To develop high quality cookies, even seemingly smallest changes depended on factors that can affect taste, texture, and nutritional value. In this light, this study aimed to investigate the upshot of refined wheat flour and pumpkin seed fl...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.heliyon.2024.e24443

Effects of Dietary Supplementation with Moringa oleifera on HIV Viral Load in Adults Receiving Standard Care

Phyllis Waruguru, Dasel Mulwa, Michael Okoth, Wesley Bor • Journal of Food Innovation, Nutrition, and Environmental Sciences (2025)

Background: Antiretroviral therapy (ART) effectively suppresses HIV viral load. However, people living with HIV (PLWH) fail to achieve optimal viral suppression and especially in resource limited settings. Nutritional supplements such as Mo...

DOAJ Open Access (DOAJ) DOI: 10.70851/ynxgrq90

Effects of different thermal processing methods on the flavor and precursor substances of the longissimus dorsi muscle in the “Duroc × Landrace × Yorkshire” ternary hybrid pigs

Xinran Yuan, Jialing Tang, Yulin Zhang, Zhengfeng Fang et al. • Food Chemistry: X (2026)

This study investigated the effects of boiling, frying, and roasting on flavor compounds and their precursors in the longissimus dorsi muscle of “Duroc × Landrace × Yorkshire” pigs. HS-SPME-GC–MS, electronic nose analysis, and multivariate ...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.fochx.2026.103935

Misalignment Tolerance and Interoperability of Wireless Charging System Based on Two-Channel Topology and Coil Optimization

Yiming Zhang, Zhongjin Huang, Ronghuan Xie, Xiaoying Chen et al. • IEEE Access (2024)

Inductive power transfer (IPT), as a method of wireless power transfer (WPT) via magnetic induction, can be applied to electric vehicles (EVs) due to its convenience and automation. Interoperability and misalignment tolerance are both major...

DOAJ Open Access (DOAJ) DOI: 10.1109/ACCESS.2024.3443273

Gasification of Lignocellulosic Waste in Supercritical Water: Study of Thermodynamic Equilibrium as a Nonlinear Programming Problem

Julles Mitoura dos Santos Junior, Adriano Pinto Mariano • Eng (2024)

As one of the main industrial segments of the current geoeconomics scenario, agro-industrial activities generate excessive amounts of waste. The gasification of such waste using supercritical water (SCWG) has the potential to convert the wa...

DOAJ Open Access (DOAJ) DOI: 10.3390/eng5020060

Reducing Torque Ripple Through Innovative Configuration of Permanent Magnet Based on Air Gap Field Modulation Theory in a Novel Axial Flux Reversal Permanent Magnet Machine

Jilong Zhao, Qing Wang, Qingfeng Han • IEEE Access (2024)

In this paper, a novel axial flux reversal permanent magnet (PM) (AFRPM) machine, which combines the merit of the axial flux PM (AFPM) machine and flux reversal PM machine, is proposed. Meanwhile, according to the characteristics of the mac...

DOAJ Open Access (DOAJ) DOI: 10.1109/ACCESS.2024.3389699

Optimal planning of integrated energy system considering swapping station and carbon capture power system

Chenke He, Jizhong Zhu, Kwok Cheung, Alberto Borghetti et al. • Energy Reports (2023)

An optimal planning method for an integrated energy system (IES) considering electric vehicles (EVs) swapping station (SS) and carbon capture power system (CCPS) is studied in this paper. Firstly, based on the analysis of swapping EV load, ...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.egyr.2023.09.120

Dynamic Behavior Improvement of Normally-Off p-GaN High-Electron-Mobility Transistor Through a Low-Temperature Microwave Annealing Process

Hsien-Chin Chiu, Chia-Hao Liu, Yi-Sheng Chang, Hsuan-Ling Kao et al. • IEEE Journal of the Electron Devices Society (2019)

The surface morphology optimization of ohmic contacts and the Mg out-diffusion suppression of normally off p-GaN gate high-electron-mobility transistors (HEMTs) continue to be challenges in the power electronics industry in terms of the hig...

DOAJ Open Access (DOAJ) DOI: 10.1109/JEDS.2019.2941519

Compensatory Analysis and Optimization for MADM for Heterogeneous Wireless Network Selection

Jian Zhou, Can-yan Zhu • Journal of Electrical and Computer Engineering (2016)

In the next-generation heterogeneous wireless networks, a mobile terminal with a multi-interface may have network access from different service providers using various technologies. In spite of this heterogeneity, seamless intersystem mobil...

DOAJ Open Access (DOAJ) DOI: 10.1155/2016/7539454

Optimization of cationic nanoparticles stabilized by poloxamer 188: A potential approach for improving the biological activity of Aloe perryi

Tahany Saleh Aldayel, Mohamed M. Badran, Abdullah H. Alomrani, Nora A. AlFaris et al. • Heliyon (2023)

Aloe perryi (AP) has gained considerable interest as a medicinal herb in various biological applications due to its rich phytochemical composition. However, the therapeutic benefits of AP could be potentiated by utilizing nanotechnology. Mo...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.heliyon.2023.e22691

Development, modelling and optimization of process parameters on the tensile strength of aluminum, reinforced with pumice and carbonated coal hybrid composites for brake disc application

Tanimu Kogi Ibrahim, Danjuma Saleh Yawas, Julius Thaddaeus, Bashar Danasabe et al. • Scientific Reports (2024)

Abstract This study focuses on optimizing double stir casting process parameters to enhance the tensile strength of hybrid composites comprising aluminum alloy, brown pumice, and coal ash, intended for brake disc applications. Analytical te...

DOAJ Open Access (DOAJ) DOI: 10.1038/s41598-024-67476-x

An assessment of the mathematical model for estimating of entropy optimized viscous fluid flow towards a rotating cone surface

Yong-Min Li, M. Ijaz Khan, Sohail A. Khan, Sami Ullah Khan et al. • Scientific Reports (2021)

Abstract Entropy optimization in convective viscous fluids flow due to a rotating cone is explored. Heat expression with heat source/sink and dissipation is considered. Irreversibility with binary chemical reaction is also deliberated. Nonl...

DOAJ Open Access (DOAJ) DOI: 10.1038/s41598-021-89739-7

A First-principles analysis of Structural, Electronic, Elastic, and vacant properties of BCC, FCC and HCP tungsten at different electronic temperatures

X.B. Ye, B.C. Pan • Nuclear Materials and Energy (2023)

Since tungsten (W) was considered as the most promising plasma facing materials (PFMs) in fusion reactors, there has been extensive research on the physical performance of W-PFMs. It is found that under the extreme conditions in a fusion re...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.nme.2023.101447

Optimized two-stage process of Haematococcus sp. for enhanced astaxanthin and essential fatty acids accumulation

Pablo N. Refolio-Samperi, Elena Adaschewski, Dieter Hanelt, Abdelfatah Abomohra • Applied Food Research (2025)

The present study evaluated a two-stage process of Haematococcus sp. to enhance the nutritional value by astaxanthin and fatty acid accumulation. Initial screening of different growth media during the green stage, focusing on enhanced bioma...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.afres.2025.101144

Critical Analysis of the Development of the Design of Lattice Tube Concrete Bridges with a Ride on Top

D. S. Spivak, S. V. Kliuchnyk • Nauka ta progres transportu (2024)

Purpose. The paper aims to highlight and substantiate the need to find rational design schemes for lattice tube concrete bridges with a ride on top based on the analysis of recent research and regulatory documents. Methodology. The current ...

DOAJ Open Access (DOAJ) DOI: 10.15802/stp2024/301524

On Security and Throughput for Energy Harvesting Untrusted Relays in IoT Systems Using NOMA

Van Nhan Vo, Chakchai So-In, Hung Tran, Duc-Dung Tran et al. • IEEE Access (2019)

In this paper, we analyze the secrecy and throughput of multiple-input single-output (MISO) energy harvesting (EH) Internet of Things (IoT) systems, in which a multi-antenna base station (BS) transmits signals to IoT devices (IoTDs) with th...

DOAJ Open Access (DOAJ) DOI: 10.1109/ACCESS.2019.2946600

An Optimization via Simulation approach for the preemptive and non-preemptive multi-mode resource-constrained project scheduling problems

Parham Azimi, Naeim Azouji • International Journal of Industrial Engineering and Production Research (2017)

In this paper a novel modelling and solving method has been developed to address the so-called resource constrained project scheduling problem (RCPSP) where project tasks have multiple modes and also the preemption of activities are allowed...

DOAJ Open Access (DOAJ)