Results 21 to 30 of about 623,093 (267)
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 +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
Analysis and Simulation the Effect of the Pierce Parameter on the Output of the Free Electron Laser system [PDF]
Engineering and Technology Journal, 2023 The free electron laser is considered one of these important and advanced inventions because it provides a laser beam within various wavelengths of the electromagnetic spectrum.
Thair Al-Aish, Hanady Kamil
doaj +1 more source
Wavelength dependence and wavelength selectivity in photochemical reactions
Photochemical & Photobiological Sciences, 2019 The concepts of wavelength dependence and wavelength selectivity have been commonly used by organic photochemists for a long time. The aim of the present article is to offer a selection of relevant cases where the choice of the irradiation wavelength played a key role in the outcome of a photochemical path.
Protti S., Ravelli D., Fagnoni M.
openaire +3 more sources
Theoretical Analysis of Suspended Road Dust in Relation to Concrete Pavement Texture Characteristics
AtmosphereParticulate 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
On Wavelength-Routed Networks With Reversible Wavelength Channels
Journal of Lightwave Technology, 2013 We observe that the performance of wavelength- routed (WR) networks often suffers from asymmetric traffic and network traffic patterns differing from the original design plans. WR networks with a fixed number of channels in a given transmission direction are inflexible. Therefore, we propose reversible wavelength channels.
Li, CY, Wai, PKA, Li, VOK
openaire +3 more sources
Current Issues in Sport ScienceIntroduction 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
Известия высших учебных заведений. Поволжский регион:Технические науки, 2023 Background. The purpose of this article is to find the optimal material for the concentrator of ultrasonic vibrations for subsequent use in the processes of electric arc surfacing. Materials and methods.
A.A. Kazinskiy, D.V. Babakaev
doaj +1 more source
The Effect of Magneto-Priming on the Physiological Quality of Soybean Seeds
Plants, 2023 Microwaves have been applied to the drying of seeds of several species due to their maintenance of the quality of the seeds and reduction of time and costs. However, few is known about the effect of microwaves on the increase of the physiological quality
Rute Q. de Faria +6 more
doaj +1 more source
Research on infrared emission spectra of pulverized coal ash deposits [PDF]
FME Transactions, 2013 This paper deals with thermal radiation properties of ash deposits on a pulverized coal boiler of an electric power plant. Normal emittance spectra in the 2.5-25 μm interval, and total normal emittance, were measured on 2 kinds of ash layers of a mm ...
Saljnikov Aleksandar +4 more
doaj