Search alternatives:
coefficient » coefficiency (Expand Search)
efficient » efficiency (Expand Search)
coefficient » coefficiency (Expand Search)
efficient » efficiency (Expand Search)
-
4661
Research into performance optimization control strategy of a hydrostatic drive bulldozer based on the constant speed cruise
Published 2025-07-01“…On the other hand, the hydraulic system performance is optimized by proposing a method for determining the optimal efficiency combination for the pump and motor, considering the efficiencies of the engine, pump, and motor. …”
Get full text
Article -
4662
Occupational Exposure to Lead Fume Among Automobile Welders
Published 2024-06-01Get full text
Article -
4663
A potential thermophotovoltaic emitter Er(Ta1−xNbx)O4 (0 ≤ x ≤ 0.2) with excellent selective emission performance
Published 2025-05-01“…Selective emitters are crucial as the key component determining the energy conversion efficiency of radioisotope thermophotovoltaic (RTPV) systems. …”
Get full text
Article -
4664
Modeling Process of Forming Flat Surface Tool for Processing Conical Parts
Published 2020-11-01Get full text
Article -
4665
Weighted joint curve inversion of aquifer parameters in pumping tests with multiple observation wells
Published 2025-01-01“…Traditional unsteady flow methods face limitations due to subjective influences and non-uniqueness in parameter determination, making aquifer parameters dependent on the estimation method and observation well locations. …”
Get full text
Article -
4666
基于DB-FastFAME色谱柱的气相色谱法 测定食用植油脂肪酸组成Determination of fatty acid composition of edible vegetable oil by gas chromatography based on DB-FastFAME column...
Published 2025-05-01“…The method resolution, precision, accuracy and column efficiency were analyzed. …”
Get full text
Article -
4667
Optical properties of silicon carbide thin films deposited by atomic substitution on porous silicon
Published 2025-01-01“…Spectroscopic ellipsometry in the range of 0.6–5.1 eV was performed in order to determine the refractive index (n), extinction coefficient (k), and bandgap (Eg) of the SiC layer. …”
Get full text
Article -
4668
An Integral Fuzzy Model to Evaluate Slab and Beam Bridges with a Preventive Approach
Published 2025-07-01“…Furthermore, the study generates maintenance recommendations, subsequently evaluated by professionals to determine the most suitable course of action based on available resources. …”
Get full text
Article -
4669
Analysis of Cannabinoids in Oil
Published 2024-03-01“…Introduction: Cannabinoids are bioactive molecules found abundantly in the cannabis plant, with two major cannabinoids being Δ-9-tetrahydrocannabinol (THC) and cannabidiol. Method: The study was divided into three phases: (1) systematic literature search on the analysis of cannabinoids in oils, (2) development and validation of a rapid and efficient high-performance liquid chromatography (HPLC)-ultraviolet (UV) method for the determination of THC in medium-chain triglyceride (MCT) oil, and (iii) green assessment of methods for the determination of cannabinoids in oil. …”
Get full text
Article -
4670
-
4671
Design and Testing of a Low-Speed, High-Frequency Straw Chopping and Returning Machine Using a Constant Breath Cam Mechanism
Published 2024-12-01“…Straw incorporation offers significant advantages in agricultural crop cultivation systems. Mechanized methods constitute the predominant approach, potentially reducing yield costs and enhancing operational efficiency. …”
Get full text
Article -
4672
Wind Tunnel Experiment on Impacts of Different Sand Barrier Layouts on Windbreak and Sand-fixing
Published 2023-08-01“…[Objective] The influences of porous sand-fixing bricks layout on wind field characteristics, windbreak effect and sand-fixing were studied in order to provide a theoretical basis for the selection of new windbreak and sand-fixing materials. [Methods] The wind pressure distribution and the fluctuation of average wind pressure coefficient of a grid sand barrier and a gradient determinant sand barrier under wind conditions were explored by wind tunnel experiment. …”
Get full text
Article -
4673
Using Constrained K-Means Clustering for Soil Texture Mapping with Limited Soil Samples
Published 2025-05-01“…Soil texture is one of the most important physical properties of soil and plays a crucial role in determining its suitability for crop cultivation. Currently, supervised classification machine learning methods are most commonly used in digital soil mapping. …”
Get full text
Article -
4674
Characterization and optimization of electrodialysis with bipolar membranes with improved alkaline stability for phenol recovery from petroleum wastewater
Published 2025-05-01“…Moreover, Response Surface Methodology (RSM) was employed as a facile method for optimizing the EDBM. In particular, the effects of current density, feed flow rate, feed concentration on the completion time (CT), and recovery efficiency (RE) of the process were investigated using the Central Composite Design (CCD) experimental design. …”
Get full text
Article -
4675
Design and test of key mechanism of beveling pin-grafting machine
Published 2013-11-01“…Mechanized grafting can reduce labor intensity, improve production efficiency and ensure product quality. The majority of researchers choose traditional grafting methods for their grafting machines, such as cut-in grafting, joining grafting or split grafting. …”
Get full text
Article -
4676
-
4677
Liquid chromatography-mass spectrometric method for the simultaneous analysis of branched-chain amino acids and their ketoacids from dried blood spot as secondary analytes for the...
Published 2024-11-01“…Correlation with the plasma method was determined using Pearson’s correlation coefficient and Bland-Altman analysis. …”
Get full text
Article -
4678
Comparative study of Normal-phase versus reversed-phase HPTLC methods for the concurrent quantification of three antiviral agents against COVID19: Remdesivir, favipiravir and Molnu...
Published 2025-03-01“…The excellent linearities were proved by the high values of correlation coefficients not less than 0.99988. The developed methods were successfully applied for the determination of the three drugs in their bulk form and in their pharmaceutical formulations. …”
Get full text
Article -
4679
Design and parameter optimization of portable tree transplanting machine
Published 2014-03-01“…Second, in order to increase the machine's working performance, a response surface method was considered to optimize the working parameter of the portable tree transplanting machine. …”
Get full text
Article -
4680
Digital Land Suitability Assessment for Irrigated Cultivation of Some Agricultural Crops Using Machine Learning Approaches (Case Study: Qazvin-Abyek)
Published 2024-09-01“…To quantify the degrees of land suitability for the target crops, a parametric approach based on the square root method was employed. Moreover, the random forest machine learning model was utilized for spatial modeling, zoning mapping, and determining the significance of environmental variables in the land suitability evaluation process. …”
Get full text
Article