-
4461
Green voltammetric strategy for sensitive determination of paracetamol in pharmaceuticals and serum using alizarin red S-modified glassy carbon electrodes
Published 2025-06-01“…Under optimized electrode condition square wave voltammetric current response of poly(ARS)/GCE showed linear dependence on concentration of 0.01–250.0 μM and an ultralow detection limit of 1.0 nM in phosphate buffer solution (pH 7.0). …”
Get full text
Article -
4462
Dynamic Analysis and Stability Enhancement of a Weak Grid-Tied Hybrid System Integrating PV, Full-Scale Wind Turbine, and Battery Storage
Published 2025-01-01“…Hybrid generation systems integrating photovoltaics (PVs), full-scale wind turbines (WTs), and battery energy storage systems (BESSs) have garnered substantial interest for utility-scale grid-tied applications due to their enhanced efficiency and reliability. However, in a hybrid system integrating these resources at the dc-side of a voltage-source converter, the dc-link stability remains largely unexplored in existing literature, particularly under weak grid conditions and across different operational regions of the PV, WT, and BESS. …”
Get full text
Article -
4463
Multisensor Fault Diagnosis of Rolling Bearing with Noisy Unbalanced Data via Intuitionistic Fuzzy Weighted Least Squares Twin Support Higher-Order Tensor Machine
Published 2025-05-01“…Finally, a dual hyperplane classifier is constructed in tensor space: a structural risk regularization term is introduced to enhance the model generalization ability and a dynamic penalty factor is set to set adaptive weights for different categories. A linear equation system solving strategy is adopted: the nonparallel hyperplane optimization is converted into matrix operations to improve the computational efficiency. …”
Get full text
Article -
4464
Response Surface Optimization of Rotenone Using Natural Alcohol-Based Deep Eutectic Solvent as Additive in the Extraction Medium Cocktail
Published 2017-01-01“…The previous study revealed the comparable efficiency of alcohol-based deep eutectic solvent (DES) in extracting a high yield of rotenone (isoflavonoid) to binary ionic liquid solvent system ([BMIM]OTf) and organic solvent (acetone). …”
Get full text
Article -
4465
Biophysical controls on light response of net CO2 exchange in a winter wheat field in the North China Plain.
Published 2014-01-01“…Maximum photosynthetic capacity (P max) was 46.6 ± 4.0 µmol CO2 m(-2) s(-1) and initial light use efficiency (α) 0.059 ± 0.006 µmol µmol(-1) in April-May, two or three times as high as those in March. …”
Get full text
Article -
4466
AfaMamba: Adaptive Feature Aggregation With Visual State Space Model for Remote Sensing Images Semantic Segmentation
Published 2025-01-01“…Extensive experiments conducted on two widely used remote sensing datasets, ISPRS Potsdam and LoveDA, demonstrate that AfaMamba achieves a superior balance between accuracy and efficiency compared to state-of-the-art models.…”
Get full text
Article -
4467
Determination of Petroleum Oil in Soil by Fluorescence Spectrophotometry with Oscillatory Extraction
Published 2023-12-01“…The infrared spectrometry used characteristic absorption at different wavenumber to characterize the content of petroleum substances in the samples, but the response of infrared spectrometry to aromatic hydrocarbons is not sensitive.OBJECTIVESTo establish a simple pre-treatment efficiency, low detection limit and good reproducible method for determination of petroleum oil in soil.METHODSUsing n-hexane as the solvent, adsorption column as the extraction method and oscillatory as the pretreatment method, petroleum oil was extracted from soil and determined by fluorescence spectrophotometry.RESULTSUnder the optimal conditions that with 275nm as the excitation wavelength and 315nm as the emission wavelength,the extraction solvent was n-hexane and the extraction method was adsorption column, the calibration curves of petroleum oil were linear with correlation coefficients 0.999, and the detection limit was 3mg/kg. …”
Get full text
Article -
4468
Distant Excitation of Rotating Surface Waves in Bodies with Cylindrical and Spherical Surface as Applied to Ultrasonic Control
Published 2025-07-01“…Increasing the efficiency of ultrasonic diagnostics and objects with curved surfaces, including cylindrical, spherical, etc., is an important scientific and technical task. …”
Get full text
Article -
4469
Formation of unmanned aircraft trajectory when flying around prohibited areas
Published 2022-01-01“…The optimal control synthesis problem is solved as an analytical definition of the optimal control of a linear non-stationary system based on the quadratic quality functional. …”
Get full text
Article -
4470
Prediction and evaluation method for development effect of shale oil storage volume fracturing
Published 2024-10-01“…The results demonstrate that following a 30% flowback ratio, the cumulative oil production from energy storage fracturing exhibits a strong linear relationship with the logarithm of the flowback ratio. …”
Get full text
Article -
4471
Correlate of Workforce Diversity and Organisational Performance of Multinational Food Producing Industry in Nigeria
Published 2020-04-01“…The reason is that it is necessary to increase the employees’ morale and their work efficiency, which will increase the level of customer satisfaction with the work of the company. …”
Get full text
Article -
4472
Technology of automated video observation of a drogue-sensor basket in the problem of autonomous aerial refueling
Published 2022-09-01“…The results of experimental studies of the synthetic vision system efficiency are presented. Based on the developed technology and the results of evaluating the effectiveness of automated observation algorithms, a strategy for performing autonomous refueling in conditions of various turbulence is proposed, while, during weak turbulence, a successful engagement is provided by tracking the center of drogue oscillations, in turn, under conditions of severe turbulence, a successful engagement can be provided by tracking a drogue controlled according to the synthetic vision system data.…”
Get full text
Article -
4473
OXITEST as a Screening Method to Evaluate Antioxidant Agents: A Study of Oxidative Stability of Fishmeal
Published 2025-01-01“…OXITEST measurements revealed differences in the rate of oxygen pressure loss among the studied agents, offering a comparative measure of antioxidant efficiency. The OXITEST method can be employed as a rapid and cost-effective method to evaluate oxidative stability and the effectiveness of antioxidants in FM.…”
Get full text
Article -
4474
Flood resilience assessment of region based on TOPSIS-BOA-RF integrated model
Published 2024-12-01“…Addressing issues of efficiency and accuracy in high-dimensional, small-sample context found in existing assessment models, this study proposes a regional flood resilience assessment integrated model. …”
Get full text
Article -
4475
Multi-Agent Double Deep Q-Learning for Fairness in Multiple-Access Underlay Cognitive Radio Networks
Published 2024-01-01“…In CR systems, an unlicensed Secondary Transmitter (ST) shares the channel with a licensed Primary Transmitter (PT). Spectral efficiency of the CR systems can be further increased if multiple STs share the same channel. …”
Get full text
Article -
4476
Role of information technology in enhancing competitive priorities: Evidence from Yemeni pharmaceutical sector
Published 2025-08-01“…The study aims to examine how information technology (IT), specifically hardware, software, networks, and databases, affects competitive priorities such as efficiency, quality, flexibility, and delivery performance.The study focused on pharmaceutical companies located in Sana’a, the capital of Yemen. …”
Get full text
Article -
4477
Enhancing weather index insurance through surrogate models: leveraging machine learning techniques and remote sensing data
Published 2025-01-01“…The proposed methodology achieved a substantial hedging efficiency of 21% downside risk reduction, thereby demonstrating the effectiveness of the proposed WII product. …”
Get full text
Article -
4478
Spectrophotometric methods for determination of naringin, amlodipine, and nifedipine using chemometric techniques
Published 2025-06-01“…The development of chemometrics methods demonstrated efficiency and precision in pharmaceutical analysis while also offering cost-effectiveness for quality control and formulation development.…”
Get full text
Article -
4479
Assessment of the effectiveness and prospects for the development of the activities of the Ukrainian Chamber of Commerce in conditions of environmental uncertainty
Published 2025-06-01“…In order to determine the impact of income and expenses on the efficiency of the operations of the Chamber of Commerce and Industry of Ukraine. …”
Get full text
Article -
4480
Web-based assessment of dual-task costs at different ages: an analysis across cognitive domains
Published 2025-05-01“…Among many, multitasking abilities are particularly relevant in everyday life contexts across the adult lifespan.MethodsWe used web-based, self-administered, dual-tasks to measure performance and dual-task costs (DTCs) at different ages, accounting for the influence of cognitive efficiency and cognitive reserve. We also tested whether DTCs were task-specific or related to general abilities by employing three dual-tasks, each focused on different cognitive functions. …”
Get full text
Article