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861
Outage probability and capacity analysis of distributed MIMO systems over a composite fading channel
Published 2015-02-01“…The exact closed-form expressions about the outage probability and capacity of distributed MIMO systems over a composite fading channel are derived firstly by using Lognormal approximation to complicated Gamma-lognormal distribution when mobile station (MS) in the cell is fixed at some position and the so-called maximum ratio transmission/selected combining (MRT-SC) and selected transmission/maximum ratio combining (ST-MRC) schemes are adopted in uplink and downlink respectively.Then based on a newly proposed non-uniform MS cell distribution model,which is more consistent with the MS cell hotspot distribution in an actual communication environment,the average outage probability and capacity formulas synthesizing the MS cell position information are further derived.Finally,the accuracy of the approximation method and the rationality of the corresponding theoretical analysis about the system performance are proven and illustrated by computer simulations.…”
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862
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863
Light Spectra, a Promising Tool to Modulate <i>Ulva lacinulata</i> Productivity and Composition
Published 2024-09-01“…Light quality is a key factor affecting algal growth and biomass composition, particularly pigments such as carotenoids, known for their antioxidant properties. …”
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864
Study of the composition and properties of extracts of Glycyrrhiza glabra grown in the Kaliningrad region and prospects of its use
Published 2022-10-01“…The highest yield of the Glycyrrhiza glabra extract (21.31 ± 0.64 mass%) was achieved when using the extraction method by Soxhlet with methanol. …”
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865
Fracture instability and pre-splitting weakening characteristics of composite hard roof under mining action
Published 2025-06-01“…The supporting and restraining effect of the lower hard roof caving gangue on the upper hard roof is weakened, the rotation amplitude and energy of the broken rock block are reduced, and the synergistic failure effect of the upper and lower hard roofs is effectively suppressed. When advancing to the first square position, the total energy of microseismic events and the peak value of advanced stress of coal body after pre-splitting of composite hard roof are 62.5% and 31.5% lower than those before pre-splitting, respectively. …”
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866
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867
Biodegradable conductive composites of poly(3-hydroxybutyrate) and polyaniline nanofibers: Preparation, characterization and radiolytic effects
Published 2011-01-01“…PANI-HCl biodegradation is negligible when compared to PHB biodegradability in an 80 day timeframe. …”
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868
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869
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870
Macrozoobenthos of the Olyutorsky Bay (Bering Sea) a quarter of century later: composition, distribution, communities
Published 2022-04-01“…There is concluded that composition, distribution and abundance of macrozoobenthos in the Olyutorsky Bay were stable over a quarter of century.…”
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871
MECHANICAL PROPERTIES OF CEMENT COMPOSITE CONTAINING RECYCLED CONCRETE AND ALKALI ACTIVATED BLAST FURNACE SLAG
Published 2020-03-01“…It can reduce compressive strength loss when an amount of cement in the mixture is reduced.…”
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872
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873
Mechanical And Physical Properties oF a Hybrid Composite With Basis oF Aluminum
Published 2023-01-01“…The results show that the Graphite content is inversely proportional with the volumetric and apparent density and the thermal conductivity when the composite F (Al+4%Cu) got high properties. …”
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874
Effect of the catalyst system on the reactivity of a polyurethane resin system for RTM manufacturing of structural composites
Published 2022-03-01“…Furthermore, the RTM process of a representative composite part was simulated. Results demonstrated the processability improvements when the LiCl was incorporated into the isocyanate component of the formulation combined with a monool or a diol. …”
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875
Structure, morphology, and mechanical properties of polysiloxane elastomer composites prepared by in situ polymerization of zinc dimethacrylate
Published 2012-11-01“…In addition, tensile tests of VMQ/ZDMA composites showed that ZDMA had a significant reinforcement on the mechanical properties of VMQ, and the best mechanical properties were obtained when the amounts of peroxide and ZDMA were 5 and 40 phr, respectively. …”
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876
Finite Element Analysis of Moisture Absorption and Aging Behaviors of CF/PPESK Composite at Different Temperatures
Published 2025-01-01“…Polyarylethersulfoneketone (PPESK) composite materials can be used as high-temperature resistant coatings and wear-resistant self-lubricating materials, which are widely used in the protection of nuclear power equipment parts.To study the effect of temperature on the moisture absorption behavior of CF/PPESK composites, a two-dimensional composite model was established, and the moisture absorption behavior and moisture absorption stress distribution rules of CF/PPESK composites under 25 ℃and 100 ℃conditions were studied by ABAQUS.Based on the obtained moisture concentration field data, the moisture absorption stress field of CF/PPESK composites with changes in temperature and time was analyzed.Results showed that the moisture diffusion in CF/PPESK composites basically followed Fick’s diffusion law.The higher the temperature, the faster the moisture absorption equilibrium was reached, and the greater the moisture absorption stress.When longterm moisture absorption at high temperature caused the material to be saturated with moisture, the maximum stress reached 140.2 MPa, and the maximum moisture absorption stress occurred in the substrate area where the fiber arrangement spacing was the smallest.…”
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877
Effect and influence of soil improvement in waste dumps under different organic composite substrate experiments
Published 2025-07-01“…The study takes the Hequ open-pit coal mine as the research object, exploring the effect and influence of different organic composite substrates on soil improvement in the open-pit coal mine waste dumps. …”
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878
Investigation of the Synthesis and Properties of Ternary V–Cu–Ce Oxides of Composition VCuCeO
Published 2009-11-01“…The samples were calcined within the temperature range 473–1073 K. When the vanadium content was increased to x ≥ 0.3 and the calcination temperature set at 673 K, a phase with composition CeVO 4 was detected via X-ray diffractometry, in addition to a V 2 O 5 and a CeO 2 phase. …”
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879
Improvement of performance of ultra-high performance concrete based composite material added with nano materials
Published 2016-03-01“…Ultra-high performance concrete (UHPC), a kind of composite material characterized by ultra high strength, high toughness and high durability. …”
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880
Adsorption for copper(II) ion with chitosan-SP/PET composite adsorbent enhanced by electric field
Published 2019-05-01“…Results showed the removal rate of copper ions (Cu(II)) adsorbed onto CS-SP/PET adsorbent was increased from 56% to 88% for 10 mg L −1 Cu(II) solution when the applied voltage was from 0 to 1.2 V. The adsorption behavior was well correlated with the Langmuir isotherm model. …”
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