Results 1 to 10 of about 452,581 (299)
IEEE Access, 2019 We study laser speckle reduction by light pipes, and we propose a new method to improve its efficiency. Proof-of-concept refractive optical elements (ROEs) with a staircase-like structure are introduced before a holographic diffuser to split a laser beam
Zhaomin Tong +5 more
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Development of a simple light pipe from a Fresnel lens [PDF]
Warasan Witthayasat Lae Theknoloyi Mahawitthayalai Mahasarakham, 2020 This research developed a simple light pipe from using a Fresnel lens as a light source to supply natural light to a light pipe made of a zinc sheet. The objectives of the study were to (1) find the best focal length or focal distance of the Fresnel lens
Sorawit Sonsaree
doaj
Efficacy of a sensory deterrent and pipe modifications in decreasing entrainment of juvenile green sturgeon (Acipenser medirostris) at unscreened water diversions. [PDF]
, 2014 Water projects designed to extract fresh water for local urban, industrial and agricultural use throughout rivers and estuaries worldwide have contributed to the fragmentation and degradation of suitable habitat for native fishes.
Bandeh, Hossein +7 more
core +1 more source
evaluation of economic efficiency of low thickness light ductile iron pipe in comparison with polymeric and composite pipes [PDF]
علوم و مهندسی آب و فاضلاب, 2017 Technical characteristics should be matched with desired performance. Investigation of cost effectiveness of pipe materials in short and long term usages is essential.
Mehrdad Rashidzadeh
doaj +1 more source
International Journal of Sustainable Energy, 2022 Light holds an important place in the way of life of humans. The first type of lighting which could be exploited was daylight. Tubular Daylight Guidance Systems (TDGS) transport and distribute this daylight inside a building.
Bruno Malet-Damour +1 more
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Effect Of EPS Protection On The Buried Pipe Under Stratum Settlement
Journal of Applied Science and Engineering, 2023 Expanded polystyrene (EPS) geofoam is a light and deformable geosynthetic that can reduce the pressure on the pipe by surrounding soil. The protective effect of geofoam bocks protection on the buried pipe under stratum settlement was investigated.
Yun Zeng +6 more
doaj +1 more source
A multi-zone model for simulating the high energy variability of TeV blazars [PDF]
, 2008 We present a time-dependent multi-zone code for simulating the variability of Synchrotron-Self Compton (SSC) sources. The code adopts a multi-zone pipe geometry for the emission region, appropriate for simulating emission from a standing or propagating ...
Begelman M. C. +10 more
core +3 more sources
MODELING OF VERTICAL LIGHT PIPES FOR DAYLIGHT ILLUMINATION OF INDOOR INDUSTRIAL BUILDINGS [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2020 The paper considers a daylight transport system model with light pipes, which provides the illumination of building production areas with natural daylight.
Badri Narayan Mohapatra, Jijnyasa Joshi
doaj
CLIMA 2019-Modelling study on pipe-encapsulated PCM wall system for building insulation and active heat removal [PDF]
E3S Web of Conferences, 2019 Phase change material (PCM) can be used in building envelope for heat insulation and energy-saving. However, the energy-saving effect of the PCM wall system is limited in summer since the PCM storing heat in the daytime will become a secondary heat ...
Yan Tian, Xu Xinhua, Gao Jiajia
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Light Pipe Comparative Measurement [PDF]
Proceedings of the 21st International Conference LIGHT SVĚTLO 2015, 2015 The illuminance measurement method for a comparative evaluation of two light pipes is described in the paper. Two commercially available light pipes of similar dimensions were evaluated for light transmittance. Measurement and data processing methodology was completed for the comparison of the light pipe efficiency.
Plch, Jiří +2 more
openaire +2 more sources