Results 11 to 20 of about 66,420 (262)
On Input Market Frictions and Estimation of Factors' Demand [PDF]
Southern Economic Journal, 2011 In this article, we explore the impact of imperfectly competitive input markets on production function estimation. First‐order profit‐maximizing conditions are altered when frictions in input markets cause the elasticity of input supply to the firm to be finite.
Arnaud Dupuy, Todd Sorense
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Energies, 2021 The presented paper, which is the first of two parts, shows the results of numerical investigations of a heat exchanger channel in the form of a cylindrical tube with a thin insert.
Piotr Bogusław Jasiński
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Energies, 2021 This paper presents an experimental study on a shell and tube mini heat exchanger (STMHE). The STMHE consisted of seven tubes in a triangular arrangement, with an 0.8 mm inner diameter and 1.0 mm outer diameter.
Mateusz Prończuk, Anna Krzanowska
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International Journal of Thermofluids, 2021 A variety of nanofluids flowing through multiple parallel pipes were numerically studied to examine the heat enhancement effects. Due to the advantages they bring in the cooling process, nanofluids have provided a new way to improve the performance of ...
A.T. Manzoor, M.Z. Saghir
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Effect of organic acid concentration in lubricant on tribological characteristics of friction couple
Advanced Engineering Research, 2019 Introduction. The possibility of using monocarboxylic acids as a lubricant composition additive, and the effect of their concentration in lubricant on the evolution of the friction factor of a brass-steel couple, as well as the morphology of the film ...
V. E. Burlakova, E. G. Drogan
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Measurement of Local Convective Heat Transfer Coefficient of Alumina-Water Nanofluids in a Double Tube Heat Exchanger [PDF]
Journal of Chemical and Petroleum Engineering, 2019 Heat transfer coefficient and thermal efficiency of γ-Al2O3/water nanofluids flowing through a double tube heat exchanger were experimentally investigated. The nanoparticles were well dispersed in distilled water at 0.05–0.15 %vol.
Behrouz Raei +1 more
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Zhileng xuebao, 2007 The effects of space of fins, number of tube rows and relative humidity of incoming air on airside performance of waw fin with hydrophilic coating under dehumidifying conditions were experimentally explored for seven waw fin - and - tube heat exchangers ...
Zhang Yuanming +2 more
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Energies, 2023 In this study, the heat transfer augmentation and friction factor of a novel type of solar air heater (SAH), which incorporates longitudinal fins and rectangular turbulators, were investigated numerically with different arrangements of the turbulators ...
Byeong-Hwa An +2 more
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FEBS Letters, EarlyView.Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure +3 more
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Formulas for Friction Factor in Transitional Regimes [PDF]
Journal of Hydraulic Engineering, 2008 This note concerns variations of the friction factor in the two transitional regimes, one between laminar and turbulent flows and the other between fully smooth and fully rough turbulent flows. An interpolation approach is developed to derive a single explicit formula for computing the friction factor in all flow regimes.
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