Results 1 to 10 of about 47,693 (267)
BMC Urology, 2023 Background This study aimed to assess initial results and patient characteristics of prostatic urethral lift (PUL) compared with those of bipolar transurethral enucleation of the prostate (TUEB) in the treatment of benign prostatic hyperplasia (BPH) in ...
Daisuke Obinata +7 more
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Induced (E,M)−structures on Topological Categories
Revista Integración, 2021 In this paper, we describe a convenient categorical structure with respect to a class of monomorphisms M and epimorphisms E for any topological category.
Juan Angoa Amador +2 more
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Single-Objective Optimal Design of a High-Performance Wind Turbine Airfoil Family
IEEE Access, 2023 The development of high-performance wind turbine blade airfoil families is an important research topic in wind power generation technology. Using the NACA63 series airfoil as the initial airfoil, the XFOIL software based on the panel method is used to ...
Zhaohuang Zhang +3 more
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Aerodynamic Shape Optimization of a NACA0018 Airfoil Using Adjoint Method and Gradient-Based Optimizer [PDF]
MATEC Web of Conferences, 2023 The purpose of this study is to demonstrate the suitability and efficacy of the adjoint method on the aerodynamic shape optimization on a simple symmetrical airfoil NACA0018 at low Reynolds number for wind turbine application. The adjoint method has been
van Stratan G.S.M. +2 more
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Vertical Launch Trajectory Modeling and Range Influence Law of Shipborne Depth Charge
水下无人系统学报, 2023 The vertical launch of shipborne depth charge can greatly improve platform adaptability and combat effectiveness, which is of great significance in improving the combat capability of ships.
Xiaohui WAN +5 more
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Alexandria Engineering Journal, 2022 In this study, the aerodynamic performance characteristics of three new EYO-Series low Reynolds number (Re) airfoils were tested at Re = 100,000 to 500,000, which are typical range of Re numbers encountered by airfoils of small wind turbine blades.
Emmanuel Yeboah Osei +4 more
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Aerodynamic Analysis of Retractable Belly Flap for a Flying Wing Aircraft
Hangkong gongcheng jinzhan, 2022 The study on the lift enhancement effect of the retractable belly flap on the flying wing configuration can conclude the effect rules on aircraft aerodynamic force.
CHEN Xian +4 more
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Sectional Leading Edge Vortex Lift and Drag Coefficients of Autorotating Samaras
Aerospace, 2023 Autorotating samaras such as Sycamore seeds are capable of descending at exceptionally slow speeds and the secret behind this characteristic is attributed to a flow mechanism known as the leading edge vortex (LEV).
Byung Kwon Jung, Djamel Rezgui
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Biomimetics, 2022 In this paper, a pitching airfoil near flat and wavy ground is studied by numerical simulations. The kinematic features of the airfoil and the flow field around it are analyzed to reveal unsteady vorticity dynamics of the self-propelled airfoil in ground
Zhiqiang Xin +3 more
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Object size effects on initial lifting forces under microgravity conditions [PDF]
Experimental Brain Research, 1999 Individuals usually report for two objects of equal mass but different volume that the larger object feels lighter. This so-called size-weight illusion has been investigated for more than a century. The illusion is accompanied by increased forces, used to lift the larger object, resulting in a higher initial lifting speed and acceleration. The illusion
Kingma, I. +2 more
openaire +3 more sources