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4621
Study on the Speed Stability of Wheel Drive Mechanism used in Lunar Rover
Published 2015-01-01“…The 3-stage planetary reducer with closed-loop control is adopted in CE-3 lunar rover wheel drive mechanism.Aiming at the problem that the speed stability of drive mechanism does not satisfy the design requirements,the factors affecting the speed stability of planetary reducer are systematically analyzed,and methods and measures minimizing the inequality of load sharing of planetary gear sets are studied carefully.Through troubleshooting and numerical simulations,the causation is uncovered as follows:the first stage sun gear radial runout exceeds the allowed range.Then two solutions are proposed:the first one is to redesign the first stage sun gear into a floating sun gear,the second one is to improve the machining precision of the first stage sun gear.And the second solution is adopted because it is smaller and lighter than the first one.Then much ground simulation tests which are conducted at the room condition,high-temperature vacuum condition and low-temperature vacuum condition demonstrate that the speed stability of drive mechanism satisfies the design requirements.At last,the effectiveness of the proposed method is validated by the telemetry parameters of lunar rover moving on the moon surface.…”
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4622
Chemisorption of Lewis Bases on Zeolites – A New Interpretation of the Results
Published 1999-03-01“…It was shown that the temperature programmed desorption of ammonia is the most effective method for providing a quantitative determination of the BrOnsted acidity of zeolites. …”
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4623
Sensing Characteristics of Side-Hole Fiber-Based Long-Period Grating
Published 2013-01-01“…Sensing characteristics of this SHF-LPG to temperature surrounding refractive index and bend have been investigated. …”
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4624
Development and Characterization of Poly(1-vinylpyrrolidone-co-vinyl acetate) Copolymer Based Polymer Electrolytes
Published 2014-01-01“…The temperature dependence of ionic conductivity from 303 K to 353 K exhibits Arrhenius plot behaviour. …”
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4625
Influence of Lead on the Interpretation of Bone Samples with Laser-Induced Breakdown Spectroscopy
Published 2016-01-01“…Plasma parameters including plasma temperature and electron density were determined by considering Local Thermodynamic Equilibrium (LTE) condition in the plasma. …”
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4626
Optimization of Process Parameters in Electrochemical Micromachining of AMCs by Using Different Techniques of Weight Evaluation
Published 2023-01-01“…In the EMM process, the temperature of the electrode, voltage, duty cycle, and electrolyte concentration are considered process parameters. …”
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4627
Experimental Investigation of Factors Influencing Operating Rotor Tip Clearance in Multistage Compressors
Published 2015-01-01“…Additional consideration is given to environmental contributions such as ambient temperature, for which changes in tip clearance height on the order of 0.05 mm (0.1% rotor span) were noted for temperature variations of 15°C. …”
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4628
Hawking Radiation-Quasinormal Modes Correspondence for Large AdS Black Holes
Published 2017-01-01“…In this paper, by introducing the effective temperature, we reanalyze the nonstrictly thermal character of large AdS black holes. …”
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4629
Condicionantes climáticos e socioeconômicos na espacialização da dengue em período epidêmico e pós-epidêmico na cidade de Fortaleza-CE
Published 2019-05-01“…In both episodes daily air temperature averages presented ideal conditions for the Aedes Aegypti reproduction with maximum temperature between 30 and 32°C and minimum between 21 and 25 ° C and relative air humidity from 76 to 95%. …”
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4630
Influence of Machine Parameters and Coagulant on the Textural Properties of Paneer (Indian Cottage Cheese)
Published 2022-01-01“…The texture of paneer manufactured from a developed automatic machine was studied with respect to the processing parameters such as coagulation temperature (70–90°C), pressure (0.3–0.6 MPa), types of coagulant (vinegar and citric acid), and milk (cow, buffalo, and full cream milk). …”
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4631
Tracking anharmonic oscillations in the structure of β-1,3-diacetylpyrene
Published 2025-01-01“…The onset and development of anharmonic effects have been successfully tracked over a wide (90–390 K) temperature range using single-crystal X-ray diffraction. …”
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4632
Improvement of Mechanical Behavior of FSW Dissimilar Aluminum Alloys by Postweld Heat Treatments
Published 2022-01-01“…It is observed that the maximum TS (209 MPa) and YS (178 MPa) are identified when maintaining temperature 350°C on the FSW sample. The reduction in elongation of as-welded joints is entirely improved by HT, and the elongation percentage is almost increased to 5% when increasing temperature on the heat treatment process, and hardness test results exhibited that the increased hardness value (120Hv) is found at HT-300°C nugget zone distance of 0 to 5 mm range.…”
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4633
Study on Adsorption Model of Deep Coking Coal Based on Adsorption Potential Theory
Published 2022-01-01“…Based on this, this paper chooses Pingdingshan coking coal as the research object, using Hsorb-2600 high-temperature and high-pressure gas adsorption instrument to carry on isothermal adsorption experiment. …”
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4634
Study on the Performance of Electrothermal Shape Memory Alloy and Magnetorheological Combined Drive
Published 2021-04-01“…Based on the thermal effect characteristics of shape memory alloy, the relationship between extrusion force and temperature of electrothermal SMA spring is established. …”
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4635
Effects of the Reaction Parameters and Light Hydrothermal Aging for Catalytic Combustion of Propane over Co-Mn-Ce Catalyst
Published 2022-01-01“…The influence of reaction temperature, propane concentration, oxygen concentration, water vapor, and hydrothermal aging was studied during the catalytic combustion of propane. …”
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4636
Processing and Characterization of High Density Polyethylene/Ethylene Vinyl Acetate Blends with Different VA Contents
Published 2012-01-01“…The storage modulus decreased with increasing the EVA ratio and temperature, while it increased with increasing the frequency. …”
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4637
The Quantitative Research of Interaction between Key Parameters and the Effects on Mechanical Property in FDM
Published 2017-01-01“…A new numerical model is built to describe the cooling process of the fused filament, which shows a perfect coherence with the practical temperature file of filament. It reveals what the forming mechanism of the bonding between filaments is and how these parameters act on final tensile strength of the specimen of this way from temperature. …”
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4638
Modeling and Optimization of BT and DBT Photooxidation over Multiwall Carbon Nanotube-Titania Composite by Response Surface Methodology
Published 2018-01-01“…According to the results, temperature has the greatest impact on removal rate. …”
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4639
An Experimental Study on Heat Conduction and Thermal Contact Resistance for the AlN Flake
Published 2013-01-01“…It is well known that AlN still maintains stablility in the high temperature. This is quite attractive for the research and development department. …”
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4640
CO2 Adsorption Capacity of Organic Alkali Sorbent CPEI from Polyethyleneimine
Published 2021-01-01“…The CO2 capacity of CPEI remained almost constant during the temperature swing adsorption/desorption cycles.…”
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