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10421
Mechanical properties of sedge fiber-reinforced epoxy composites incorporated with graphene oxide
Published 2025-01-01“…Lighter composite materials, especially those with a fiber-reinforced polymeric matrix are well fit in the current needs to combine low density material and high mechanical resistance. …”
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10422
ANALYSIS ON STRESS AND DEFORMATION OF STEEL WIRE ROPE AT WR-CVT DISCONTINUOUS CONTACT WIRE
Published 2018-01-01“…Therefore,the wear of the steel rope ring at the discrete part of the bending section of the pulley is relatively serious,and it is relatively easy to malfunction when in the working state.…”
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10423
Polarity dependent predictable and random resistive switching in forming-free unipolar memristors
Published 2025-01-01“…An equivalent circuit model is proposed to describe the HoMnO3 memristor as a three-layered capacitor structure. Based on the energy band diagram of the HoMnO3 structure under applied negative and positive write bias, polarity dependent, predictable, and random resistive switching is explained. …”
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10424
Terahertz wave propagation and channel characterization
Published 2022-01-01“…Firstly, the different characteristics of terahertz waves compared to lower frequency bands were summarized, including the influence of meteorological factors and rough surfaces of materials on THz waves.Next, it was proposed to use ray-tracing (RT) technology to calibrate the three-dimensional (3D) environment model and electromagnetic parameters of materials in the target scenarios through very limited channel measurement data.Then, the reversed parameters were utilized to perform in a similar but more general scenario, instead of a large amount of channel measurement data.Finally, the channel characteristics were analyzed by extraction of the channel key parameters, such as path loss, shadow fading, Rician K-factor, delay spread, angular spread, and doppler parameters in a mobile scenario.Representing two ends of 6G THz use cases from indoor scenario to outdoor scenario, case studies were made for wireless connections on a desktop and vehicular communications, respectively.As for the outdoor scenario, the influences of meteorological factors were additionally considered.The work is of great significance for the design and evaluation of the THz communication system.…”
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10425
5G urban rail traffic scenario classification and channel modeling
Published 2021-10-01“…Urban rail traffic is an important part of modern transportation infrastructure.As a new generation of mobile communication technology, 5G can provide high data rate and low latency wireless transmission, which helps to improve the efficiency and service quality of urban rail traffic system.Due to the complexity of urban rail traffic scenarios, accurate communication scenario classification, channel characterization and channel models are required to provide theoretical support for the design of urban rail traffic 5G communication systems.The classification of 5G urban rail traffic radio propagation scenarios to support channel measurements and modeling was proposed.Current status of urban rail traffic channel measurements and modeling was shown, and the current challenges were analyzed.The applications of artificial intelligence in channel feature extraction and channel modeling were discussed, and the 5G urban rail traffic channels by considering reconfigurable intelligent surface and unmanned aerial vehicle were analyzed.Finally, the research on 5G urban rail traffic channel modeling at millimeter wave frequency band was described.…”
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10426
Research of the Effects of Pressure Angle on Mesh Characteristic of Involute Cylindrical Gear
Published 2016-01-01“…The results show that the increase of the normal pressure angle tends to increase the bending strength,the contact strength and the ability to prevent scuffing when the normal pressure angle is less than 25°. …”
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10427
GRB 130603B: No Compelling Evidence for Neutron Star Merger
Published 2015-01-01“…However, the X-ray afterglow that was measured with the Swift XRT and Newton XMM has the canonical behaviour of a synchrotron afterglow produced by a highly relativistic jet. The H-band flux observed with HST 9.41 days after burst is that expected from the measured late-time X-ray afterglow. …”
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10428
Detection of the wheat rust disease infected farms using Landsat images
Published 2017-03-01“…The reflectance values of leaf are collected by an ASD spectroradiometer in the range of red and near infrared spectrum. …”
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10429
Efficient heuristic algorithm for the mobile sink routing problem
Published 2011-01-01“…In large-scale monitoring region,randomly deployed wireless sensor networks may not be fully connected with high probability.Using mobile sink for data collection is one of the feasible solutions.Mobile sink shortest routing prob-lem can be regarded as a special case of TSP with neighborhoods(TSPN) problem,since the neighborhoods are the radio ranges of the sensor nodes,which can be modeled as possibly overlapped disks with diverse sizes.This kind of TSPN problem has no polynomial algorithms so far.To handle it,a novel approximation algorithm was proposed,which first forms a "racetrack" by utilizing the non-intersecting loop property of TSP routes,and then through the inner lane heuris-tic,the bend heuristic and the shortcut searching,the algorithm can find an approximation solution within O(n2) computa-tion time.The formal proofs and the large-scale simulations all verify that our algorithm can achieve a good approxima-tion ratio and can be more efficient than the related algorithms.…”
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10430
PAAUGLIŲ POŽIŪRIS Į GYVENSENĄ IR SVEIKATOS PATIKRĄ
Published 2018-12-01“…Ne visi paaugliai linkę rūpintis savo mityba, jų fizinė veikla yra nepakankama. Dauguma paauglių yra bandę rūkyti ar rūko kasdien bei vartoja alkoholinius gėrimus, daugiau nei pusė nurodė, kad nerūko elektroninių cigarečių ir nėra vartoję psichoaktyviųjų medžiagų. …”
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10431
Striped Cucumber Beetle Acalymma vittatum F. (Insecta: Coleoptera: Chrysomelidae)
Published 2018-07-01“…The spotted cucumber beetle, Diabrotica undecimpunctata howardi Barber, and banded cucumber beetle, Diabrotica balteata LeConte, are more common in Florida, causing damage symptoms that are similar to striped cucumber feeding damage (Webb 2010). …”
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10432
METHOD OF SIMULTANEOUS OPTIMIZATION OF RADIO DEVICES PERFORMANCE IN FREQUENCY AND TIME DOMAINS
Published 2018-12-01“…Some examples of the transient function optimization under conditions of gain-frequency response in the stop-band are considered. The found approximations have performance exceeding that of the Bessel and Butterworth filters.…”
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10433
On broadband, linear-phase, flat group delay, all-pole, low-pass filters for high-speed, data communication
Published 2025-03-01“…Measurement results show an in-band OIP3 of 8.8 dBm and a nearly linear phase response at a power consumption of 35 mW to 50 mW from a 1V supply. …”
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10434
The Effects of Ovine Whey Powders on Durum Wheat-Based Doughs
Published 2018-01-01“…Differences of the secondary structure of gluten proteins among samples were investigated by analyzing the amide I band in the Fourier transform infrared spectra of the dough. …”
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10435
Influence of flexoelectricity on coupled electromechanical response of 2D MXene/graphene-based hybrid piezocomposites
Published 2024-10-01“…A three-phase micromechanical modeling is developed for determining the effective properties of MGHPC composed of 2D MXene and graphene nano-reinforcements embedded in an epoxy matrix. …”
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10436
STUDY ON FATIGUE BEHAVIOR OF PLASMA CHROMIZING STRENGTHENING LAYER ON BIPHASIC TITANIUM ALLOY
Published 2021-01-01“…The fatigue properties of the specimens were evaluated by a rotary bending fatigue machine under a given load. The results show that the chromium alloy layer obtained after 5 hours of 850 ℃ treatment is composed of four sublayers,namely the Cr deposit layer,TiCr<sub>2</sub> layer,Ti<sub>4</sub>Cr layer and Cr-Ti solid solution layer. …”
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10437
One-step depositing method of PAni/MnO2 composites for enhanced supercapacitor performance
Published 2025-02-01“…The assembled supercapacitor displays high energy density, superior bending performance, and good cycle stability. This easy-to-prepare composite electrode, with excellent energy storage capability, offers significant potential for flexible energy storage devices.…”
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10438
LiNbO3 Coating on Concrete Surface: A New and Environmentally Friendly Route for Artificial Photosynthesis
Published 2013-01-01“…In these research photoassisted solid-gas phases reduction of carbon dioxide (artificial photosynthesis) was performed using a photocatalyst, LiNbO3, coated on concrete surface under illumination of UV-visible or sunlight and showed that LiNbO3 achieved high conversion of CO2 into products despite the low levels of band-gap light available. The high reaction efficiency of LiNbO3 is explained by its strong remnant polarization (70 µC/cm2), allowing a longer lifetime of photoinduced carriers as well as an alternative reaction pathway. …”
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10439
Analysis on dynamics and load sharing characteristics of herringbone tooth planetary gear system
Published 2024-06-01“…A bending-torsion-axis coupling dynamic model of herringbone tooth planetary gear transmission system under time-varying meshing stiffness, tooth-side clearance and bearing clearance, integrated meshing error and load excitation was established, and the periodic motion and bifurcation of the system were studied. …”
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10440
Effect of FeO content on melting characteristics and structure of nickel slag
Published 2022-01-01“…The liquidus temperature, softening temperature, hemispherical temperature, flow temperature, viscosity, and critical viscosity temperature of the slag system tend to decrease gradually, but the solid phase temperature tends to decrease first and then increase. …”
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