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481
Artificial intelligence models for predicting the performance of proton exchange membrane water electrolyzers under steady and dynamic power
Published 2025-01-01“…Predicting the effect of degradation in PEMWEs is crucial for determining economic feasibility, maintenance schedules, and optimal control. However, existing semi-empirical and data-driven models for degradation are typically rudimentary or system-specific. …”
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482
Physiological Adaptation of <i>Chromochloris zofingiensis</i> in Three-Phased Cultivation Performed in a Pilot-Scale Photobioreactor
Published 2025-04-01“…<i>C. zofingiensis</i> can achieve growth rates up to four times higher than those of <i>H. pluvialis</i> under optimal phototrophic conditions. Although several studies have examined its cultivation and carotenogenesis under different tropic growth modes at laboratory scale, few have focused on pilot-scale systems. …”
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483
Finite Element Method for Time-Fractional Navier–Stokes Equations with Nonlinear Damping
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484
Developing a model of physical education teachers’ health service competence in China: based on the grounded theory technical approach
Published 2024-12-01“…Therefore, this study constructed a health service competence model of Chinese physical education teachers to assess their contribution to the improvement of China’s national public health system. Methods The qualitative data were primarily gathered through semi-structured interviews. …”
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485
Gum ghatti based novel electrically conductive biomaterials: A study of conductivity and surface morphology
Published 2014-04-01“…Gum ghatti-cl-poly(acrylamide-aniline) interpenetrating network (IPN) was synthesized by a two-step aqueous polymerization method, in which aniline monomer was absorbed into the network of gum ghatti-cl-poly(acrylamide) and followed by a polymerization reaction between aniline monomers. Initially, semi-IPN based on acrylamide and gum ghatti was prepared by free-radical copolymerization in aqueous media with optimized process parameters, using N,N'-methylenebis-acrylamide, as cross-linker and ammonium persulfate, as an initiator system. …”
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486
Control Strategy for Potential Vector Remolding Fault Ride-through in Grid-forming MMC
Published 2025-04-01“…[Objective] The operational characteristics of the grid-forming modular multilevel converter (MMC) in offshore wind power transmission systems under short-circuit faults in the receiving-end grid are unclear, and the interaction mechanism between fault ride-through and grid-forming active support is not well understood, which poses a significant threat to the reliable operation of offshore wind power flexible direct current systems. …”
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487
Intelligent frequency control of AC microgrids with communication delay: An online tuning method subject to stabilizing parameters
Published 2024-12-01“…In particular, the proposed method reduces transient and steady-state frequency deviations more than semi- and unconstrained methods. The improved metrics and stability analysis show that the method improves system performance and stability under changing conditions.…”
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488
A study of quantitative content of quercetin in the leaves of the schisandra chinensis
Published 2018-06-01“…Consequently, chromatodensitometric method can be used not only for semi-quantitative, but also for quantitative evaluation of the content of various substances in medicinal plant raw materials.…”
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489
Factors affecting economic profits of stocker cattle farming business in Sakon Nakhon, Thailand
Published 2025-04-01“…The stocker cattle farming business is an essential component of the cattle production system for farmers in Thailand. Raising stocker cattle independently allows for a reduction in costs related to fattening. …”
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490
The Relationship Between Credit Supply, Capital Structure and Firm Performance of Listed Real Estate Firms: Evidence from an Emerging Country
Published 2025-05-01“…By using a sample of 49 real estate firms listed on the Ho Chi Minh City Stock Exchange between 2007 and 2021 and applied some econometric models such as ordinary least squares, fixed-effects, random effects estimation, and two-step system GMM, this research pioneers the concept of a minimum debt threshold or lower-bound debt threshold, addressing theoretical and empirical gaps in the evaluation of the effects of maintaining debt levels below this threshold, in contrast to traditional studies that primarily emphasize the optimal debt level or maximum debt threshold. …”
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491
Enhanced Deep Autoencoder-Based Reinforcement Learning Model with Improved Flamingo Search Policy Selection for Attack Classification
Published 2025-01-01“…This has heightened the need for security in networks as web-based communication systems are advanced nowadays. The proposed work introduces an intelligent semi-supervised intrusion detection system based on different algorithms to classify the network attacks accurately. …”
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492
Hydroxyl-terminated polybutadiene liner curing process monitoring using non-collinear ultrasonic wave mixing technique
Published 2025-04-01“…The Hydroxyl-Terminated Polybutadiene (HTPB) liner in solid rocket motors is a viscoelastic material formed through the polymerization and gelation of HTPB and toluene diisocyanate. The semi-cured state of the HTPB liner plays a critical role in determining the optimal timing for propellant loading. …”
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493
Research on Spatiotemporal Evolution Characteristics and Driving Mechanisms of Agricultural Drought in the Yellow River Basin
Published 2025-01-01“…These research results provide important practical guidance for optimizing agricultural production distribution, safeguarding food security, and developing drought early warning systems and countermeasures in China's Yellow River Basin.…”
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494
Annual 30-m maps of global grassland class and extent (2000–2022) based on spatiotemporal Machine Learning
Published 2024-12-01“…The suggested uses of data include (1) integration with other compatible land cover products and (2) tracking the intensity and drivers of conversion of land to cultivated grasslands and from natural / semi-natural grasslands into other land use systems.…”
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495
Is it safe to dance flamenco during pregnancy? Biomechanical considerations
Published 2023-01-01“…Due to visual observation, a proper alignment of the dancer’s body was identified: vertical trunk, stabilized spine, optimal stable pelvic position. Additionally our expectant mother performed proper configuration of the lower limb joints with semi-flexed knees and hips. …”
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496
Exploring supply and demand imbalance of community-based older adult care: an observational study in Chongqing, China
Published 2025-06-01“…ObjectiveUsing an urban area in southwest China as a case study, this research investigates and analyzes the supply and demand of community-based older adult care services to provide a basis for optimizing the older adult care service system.MethodsA two-stage sampling method was employed to select older participants. …”
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497
Selective light transmission in agrivoltaics: Modeling light spectra and photosynthetic rate
Published 2025-09-01“…While most agrivoltaic systems use opaque silicon photovoltaics, their excessive shading has shifted interest toward semi-transparent wavelength-selective photovoltaic (WSPV) technologies. …”
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498
The effect of ecological characteristics on the domestication of sand rice (Agriophyllum squarrosum)
Published 2024-11-01“…After germination, the root system rapidly extends downwards. It has short life cycles, completing the life span in 90 days at drought years. …”
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499
Exploring the implemented guidelines for dyslipidemia treatment and care among nurses and physicians: A qualitative study in Jordan.
Published 2025-01-01“…Findings highlight the need for national guidance and system-level support to facilitate better implementation.…”
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500
Adaptive Disturbance Rejection and Power Smoothing Control for Offshore Hydraulic Wind Turbines Based on Pitch and Motor Tilt Angles
Published 2024-12-01“…An innovative dual-variable anti-disturbance control strategy is proposed, which independently regulates the pitch angle of the rotor and the swing angle of the variable motor to mitigate fluctuations in both speed and torque, thereby achieving a smoother system output power. The simulation results obtained through MATLAB/Simulink (Version R2022a) indicate that employing the proposed control strategy leads to an 8.31% reduction in power generation compared to optimal power tracking strategies while enhancing output power stability by 56.67%. …”
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