Results 31 to 40 of about 1,935,997 (301)

Biphoton Interference in a Double-Slit Experiment [PDF]

, 2018
A double-slit experiment with entangled photons is theoretically analyzed. It is shown that, under suitable conditions, two entangled photons of wavelength $\lambda$ can behave like a \emph{biphoton} of wavelength $\lambda/2$.
Paul, Ananya, Qureshi, Tabish
core   +4 more sources

Effect of wavelength of sinusoidal wavy wall surface on drag and heat transfer at turbulent thermal boundary layer flow

Journal of Thermal Science and Technology, 2018
Direct numerical simulations of thermal turbulent boundary layer flows over a wavy wall surface are performed to investigate the effect of a wavelength on drag coefficients and heat transfer performance.
Hiroya MAMORI, Masanari FUJIMURA, Shotaro UDAGAWA, Kaoru IWAMOTO, Akira MURATA, Yasuo KAWAGUCHI, Hirotomo ANDO, Hideki KAWASHIMA, Hirohisa MIENO   +8 more
doaj   +1 more source

Environmental Cycles, Melatonin, and Circadian Control of Stress Response in Fish

Frontiers in Endocrinology, 2019
Fish have evolved a biological clock to cope with environmental cycles, so they display circadian rhythms in most physiological functions including stress response.
Francisco Javier Sánchez-Vázquez, Jose Fernando López-Olmeda, Luisa Maria Vera, Herve Migaud, Marcos Antonio López-Patiño, Jesús M. Míguez   +5 more
doaj   +1 more source

Design of Zero Dispersion Optical Fiber at Wavelength 1.3 m [PDF]

مجلة التربية والعلم, 2018
In this article, an optical fiber was designed with zero- dispersion at wavelength of (1.3 m). The design took into consideration many factors of the fiber, such as; fiber cross- section, fiber material, refractive index.
R. S. Habeb
doaj   +1 more source

High channel count and high precision channel spacing multi-wavelength laser array for future PICs [PDF]

, 2014
Multi-wavelength semiconductor laser arrays (MLAs) have wide applications in wavelength multiplexing division (WDM) networks. In spite of their tremendous potential, adoption of the MLA has been hampered by a number of issues, particularly wavelength ...
Chen, Xiangfei, Hou, Lianping, Li, Jingsi, Li, Lianyan, Li, Simin, Marsh, John H., Qiu, Bocang, Shi, Yuechen, Tang, Song, Zhang, Tingting, Zhang, Yunshan, Zheng, Jilin   +11 more
core   +2 more sources

Matching Light Source Spectrum to Photosynthetic Spectrum of Algae

Turkish Journal of Agriculture: Food Science and Technology
Microalgae have been utilized to produce various products such as pharmaceuticals, food additives, biofuels, and in processes like wastewater treatment and carbon dioxide fixation. However, scaling up production systems to provide necessary capacities of
Anil Kommareddy, Seyit Uguz, Gary Anderson   +2 more
doaj   +1 more source

In-door germination and seedling growth of green and red lettuce under LED-light spectrum and subsequent effect on baby leaf lettuce

Italian Journal of Agronomy, 2022
The spectrum and intensity of light play a significant role in the primary and secondary metabolism of plants. Low intensity can make the photosynthetic process less efficient, while inadequate spectrum can impair plant growth and quality.
Cristian Hernández-Adasme, Herman Silva, Víctor Escalona   +2 more
doaj   +1 more source

Theoretical Analysis of Suspended Road Dust in Relation to Concrete Pavement Texture Characteristics

Atmosphere
Particulate matter (PM) originating from road dust is an increasing concern in urban air quality, particularly as non-exhaust emissions from tire–pavement interactions gain prominence.
Hojun Yoo, Gyumin Yeon, Intai Kim
doaj   +1 more source

Nanosecond channel-switching exact optical frequency synthesizer using an optical injection phase-locked loop (OIPLL) [PDF]

, 2004
Experimental results are reported on an optical frequency synthesizer for use in dynamic dense wavelength-division-multiplexing networks, based on a tuneable laser in an optical injection phase-locked loop for rapid wavelength locking.
Bayvel, P, Duser, M, Lovell, T, Puttnam, B, Renaud, CC, Seeds, AJ, Silva, CFC   +6 more
core   +1 more source

Impact of optical wavelength on the reliability of photoplethysmography-based heart rate measurements outside of controlled laboratory environments

Current Issues in Sport Science
Introduction The effectiveness of heart rate (HR) measurements via photoplethysmography (PPG) depends on the wavelength of light used. Typical PPG sensors use green, red, or infrared light, each penetrating the skin to different depths (Ray et al ...
Manuel Meier, Christian Holz
doaj   +1 more source