Results 41 to 50 of about 3,746,446 (211)

Analysis of thermal field within an urban canyon with variable thermophysical characteristics of the building's walls. [PDF]

, 2015
In a typical urban configuration, a microclimatic analysis has been carried out. Using a CFD method, a N-S oriented urban street canyon, with a given H/W ratio, has been examined.
DE LIETO VOLLARO, Andrea, Galli, Giorgio, Romagnoli, Roberto, Vallati, Andrea   +3 more
core   +1 more source

Development of an Unmanned Aerial Vehicle-Borne Crop-Growth Monitoring System

Sensors, 2017
In view of the demand for a low-cost, high-throughput method for the continuous acquisition of crop growth information, this study describes a crop-growth monitoring system which uses an unmanned aerial vehicle (UAV) as an operating platform.
Jun Ni, Lili Yao, Jingchao Zhang, Weixing Cao, Yan Zhu, Xiuxiang Tai   +5 more
doaj   +1 more source

A new principle of cell sorting by using selective electroporation in a modified flow cytometer [PDF]

, 1990
When a strong electric field pulse of a few microseconds is applied to biological cells, small pores are formed in the cell membranes; this process is called electroporation.
Bakker Schut, Tom C., Greve, Jan, Grooth, Bart G. de   +2 more
core   +3 more sources

Enhancing Axial Fan Noise Reduction through Innovative Wavy Blade Configurations [PDF]

Journal of Applied Fluid Mechanics
Noise is one of the key indicators to evaluate axial flow fans, and in many cases, it is also the only indicator for determining their suitability for use.
W. C. Qi, K. Cheng, P. C. Li, J. Y. Li
doaj   +1 more source

Evolution of the flow field in decaying active regions, Transition from a moat flow to a supergranular flow

, 2018
We investigate the evolution of the horizontal flow field around sunspots during their decay by analysing its extension and horizontal velocity around eight spots using SDO/HMI Doppler maps.
González, Nazaret Bello, Strecker, Hanna   +1 more
core   +1 more source

Flow Field Analysis and Structural Optimization of a Rotating Wind Collection Device [PDF]

Iranica Journal of Energy and Environment
In this paper, a new type of wind collection device that can generate rotating wind for wind power generation has been designed to address the shortcomings of current wind power generation devices.
Y. Xu, H. Jiang, K. Chen, Z. Jiang
doaj   +1 more source

Analysis of the Flow Field in a Radial Compressor [PDF]

Volume 1A: General, 1978
Using pressure transducers and hot wire anemometers, the flow and pressure field in a subsonic centrifugal compressor is analyzed. Detailed pressure, velocity, and flow angle maps are given for the compressor inlet section, along the shroud, in the outlet section of the rotor, and also in the vaneless diffuser.
openaire   +1 more source

Design and performance of compliant grinding tools for blade root smooth grinding

Jin'gangshi yu moliao moju gongcheng
ObjectivesThe difficulty in machining complex structural components such as aircraft engine blade roots is a common problem in the precision machining industry, and the stability of grinding tool performance is crucial for achieving automated machining ...
Mingcong LI, Peisen TIAN, Yun HUANG, Shengbo YAN, Lai ZOU, Wenxi WANG   +5 more
doaj   +1 more source

Using 3D Stringy Gravity to Understand the Thurston Conjecture

, 2003
We present a string inspired 3D Euclidean field theory as the starting point for a modified Ricci flow analysis of the Thurston conjecture. In addition to the metric, the theory contains a dilaton, an antisymmetric tensor field and a Maxwell-Chern Simons
Alvarez E, Bona C, Braham S P, Chow B, Chow B, De Francia M, Dowker S, Eisenhart L P, Eisenhart L P, G Kunstatter, Gegenberg J, Hamilton R S, Hamilton R S, Hawking S W, Isenberg J, J Gegenberg, Kaloper N, Kodama H, Koike T, Perelman G, Piotrkowska K, Poincaré H, Polyakov A M, Scott P, Thurston W P, Wald R M, Weeks J R, Yano K, Yasuno K   +28 more
core   +1 more source

Microstructure and Mechanical Properties of Cu-CoatedCarbon-Nanotubes-Reinforced Aluminum Matrix Composites Fabricated by Ultrasonic-Assisted Casting

Metals
Carbon nanotubes (CNTs) are considered ideal nanoscale reinforcement for the development of high-performance metal matrix composites due to their unique structure and excellent mechanical properties.
Xiaojian Dong, Min Zeng, Hong Yan
doaj   +1 more source