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3341
The In-Plane Deformation and Free Vibration Analysis of a Rotating Ring Resonator of a Gyroscope with Evenly Distributed Mass Imperfections
Published 2025-08-01“…The dynamic equations are formulated by using Hamilton’s principle in the ground-fixed coordinates. The coordinate transformation is applied to facilitate the solution of the steady deformation, and the displacements and tangential tension for the deformation are calculated by the perturbation method. …”
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3342
Diagnosis Prostate Cancer via Molecular Computed Tomography Imaging based on Targeted Gold Nanoparticles
Published 2024-11-01“…The present study aimed to investigate a novel approach using Triptorelin-conjugated-coated Gold Nanoparticles (TAuNPs) for early prostate cancer diagnosis through molecular CT imaging.Materials and Methods: In the current experimental study, AuNPs and TAuNPs were synthesized and then characterized using transmission electron microscopy (TEM), fourier transform infrared (FTIR) spectroscopy, and dynamic light scattering (DLS), and the AuNPs cytotoxicity and the cell viability were also assessed using the 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide (MTT) assay. …”
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3343
Do feeding habits influence anthropogenic particle consumption in demersal fish in a tropical estuary? A study from the northern part of the Tropical Eastern Pacific
Published 2025-07-01“…The aim was to investigate how the type and quantity of microplastics ingested by demersal fish of different trophic levels, feeding habits, and feeding guilds vary, and if these relate to the APs found in water.MethodsWater and fish samples were collected from a network of stations through the estuarine system of Huizache-Caimanero. …”
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3344
Ce-Doped Iron Oxide Anticorrosive Coatings: Effect of <i>c</i>(Ce<sup>4+</sup>):<i>c</i>(Fe<sup>3+</sup>) Ratio on Structure, Morphology, and Coating Anticorrosion Performance
Published 2024-10-01“…Utilizing hydrothermal methods, Ce-doped iron oxide nanoparticles were synthesized from precursor solutions under different <i>c</i>(Ce<sup>4</sup>:<i>c</i>(Fe<sup>3+</sup>) precursor solutions. …”
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3345
Chemical composition and mosquitocidal activity of methanolic leaf extracts from Ziziphus mauritiana L. against Aedes aegypti L. and Culex quinquefasciatus Say
Published 2024-11-01“…Methods: In the current investigation, the chemical properties of Z. mauritiana leaf extract were examined through UV-Vis Spectroscopy, Fourier Transform Infra-Red Spectroscopy (FTIR), and GC-MS Analysis. …”
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3346
Evaluation of Clavulanic Acid Adsorption in MgAl-Layered Double Hydroxides: Kinetic, Equilibrium and Thermodynamic Studies
Published 2012-01-01“…The adsorbents were characterized by X-ray diffraction methods, Fourier-transform infrared spectroscopy and scanning electron microscopy. …”
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3347
3D visualization design of digital intelligent landscape environment based on wireless network security
Published 2025-05-01“…The study compares the differences between this digital method and the traditional method in terms of frame loss rate and user satisfaction. …”
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3348
Determination of pesticide toxicity parameters using probit-analysis
Published 2023-06-01“…Methods. To determine the toxicity of pesticides, the method of probit-analysis was used. …”
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3349
Processing of retransmitted GPS signals in the problem of measuring the total electron content in the ionosphere
Published 2023-09-01“…Objectives. For a method for estimating the total electron content in the ionosphere based on the retransmission of the L1 GPS navigation signal by a repeater nanosatellite (SR) to the frequencies of 150/400 MHz allocated for geophysical research and their reception at a ground-based receiving point (RP), it is necessary to develop the algorithms for coherent accumulation of received relayed signals and measurement of the difference between their delays at observation intervals up to a few seconds.Methods. …”
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3350
Linear Precoding for Multiuser Visible-Light Communication With Field-of-View Diversity
Published 2016-01-01“…Under the assumption of maximum-ratio combining at the receivers, a linear precoding method is proposed. Detailed operation of this precoding method includes two steps: First, with matrix transformation and semi-definite relaxation, the original nonconvex optimization problem is transformed into solvable convex optimization subproblems. …”
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3351
Research on the Design Process and Approaches for Low-Carbon Ecological Parks in Urban Areas of Northwestern China
Published 2025-07-01“…The low-carbon design practice of Tongchuan Peony Park is implemented, and the average carbon sink capacity of different zones of the project is quantitatively compared from the perspective of function and landscape characteristics.ConclusionThrough the synergistic consideration of ecological functions and practical uses, a design process and optimization method based on the integration of ecology and functionality are proposed, providing scientific guidance for the practice of low-carbon ecological parks. …”
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3352
Elevation Data Statistical Analysis and Maximum Likelihood Estimation-Based Vehicle Type Classification for 4D Millimeter-Wave Radar
Published 2025-04-01“…Further, the data-driven parameter optimization on likelihood probabilities of different vehicle samples is performed using a large-scale elevation dataset, and an MLE-based vehicle classification method is presented for identifying small and large vehicles. …”
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3353
DFT theoretical and experimental investigation of gelatin-loaded niobium-doped calcium apatite ceramics to elucidate its structural and electronic characteristics
Published 2025-04-01“…Gelatin/NbHAP (GNbHAP), and gelatin/HAP (GHAP) prepared by solvent casting differ in structural, and electronic properties. This difference is determined experimentally using characterization methods (such as X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), and Raman spectroscopy) and theoretically, using density functional theory (DFT) in the Gaussian 09 program utilizing the B3LYP functional method. …”
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3354
Coverage intensity of optimal sensors for common, isolated, and integrated steel structures using novel approach of FEM-MAC-TTFD
Published 2019-08-01“…This approach was proposed based on combination of common optimal sensor placement algorithm and nonlinear time history analysis. A new method called transformed time history to frequency domain approach was evaluated to transform nonlinear time history analysis results to frequency domain and then the effective frequencies according the maximum range of Fourier amplitude were selected. …”
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3355
Research of the Fault Feature Extraction of Rolling Bearing based on Image Processing
Published 2015-01-01“…The feature extraction is crucial for fault diagnosis,although the existing feature extraction methods in time domain,frequency domain and time-frequency domain are effective,it is also necessary to find new methods in other domain.On the basis of the characteristic of snow images generated by analyzing SDP(Symmetrized Dot Pattern)method,a feature extraction method based on image processing are put forward.Firstly,the original vibration signals are transformed into snow images in polar coordinate by SDP method.Then,the shape features of the snow images in different fault pattern of rolling bearing are extracted by using image processing technology,and the characteristic parameters are analyzed.Finally,BP network are created to realize fault pattern recognition.The experimental results show that this method is effective.…”
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3356
A new evolutionary distance of amino acid sequences and its application
Published 2012-05-01“…The dynamic equation could be transformed into a linear regression model, then the parameter b was estimated by the least square method. …”
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3357
Transient Voltage Unit Protection Based on Fault Information Fusion
Published 2024-01-01“…To address these issues, a new method of transient voltage protection is proposed by mining the equipment configuration information of the bus and line, as well as the frequency characteristics of the line boundary. …”
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3358
Saturated permeability and water retention capacity in biochar-methanotrophs-clay for new landfill cover system
Published 2024-09-01“…Detected by mercury intrusion porosimetry (MIP), fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM), the differences displayed the changes of pore structures and extracellular polymeric substances (EPS). …”
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3359
An Equivalent Dynamic Phasor Model for a Single-Phase Boost Power-Factor-Correction Converter
Published 2025-01-01“…To overcome challenges arising from differing driving frequencies (line frequency for the DBR and switching frequency for the DC-DC converter) in the DP modeling of boost PFC converters, we employ the sign function to transform the dynamic model of the single-phase DBR and boost DC-DC converter into an equivalent single-phase active rectifier model. …”
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3360
Application of spectral characteristics of electrocardiogram signals in sleep apnea
Published 2025-07-01“…BackgroundElectrocardiogram (ECG) signals contain cardiopulmonary information that can facilitate sleep apnea detection. Traditional methods rely on extracting numerous ECG features, which is labor-intensive and computationally cumbersome.MethodsTo reduce feature complexity and enhance detection accuracy, we propose a spectral feature-based approach using single-lead ECG signals. …”
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