Results 21 to 30 of about 2,864,852 (356)

Detection of nanometer-scale diameter changes in optical fibers with forward stimulated Brillouin scattering [PDF]

EPJ Web of Conferences
We investigate the potential of forward-stimulated Brillouin scattering in optical fibers to detect changes of the fiber diameter with nanometer resolution.
Álvarez-Ocampo C., Delgado-Pinar M., Díez A., Cruz J. L., Andrés M. V.   +4 more
doaj   +1 more source

Recent Advances in Phase-Sensitive Optical Time Domain Reflectometry (Ф-OTDR)

Photonic Sensors, 2021
Phase-sensitive optical time domain reflectometry (Ф-OTDR) is an effective way to detect vibrations and acoustic waves with high sensitivity, by interrogating coherent Rayleigh backscattering light in sensing fiber. In particular, fiber-optic distributed
Yunjiang Rao, Zinan Wang, Huijuan Wu, Zengling Ran, Bing Han   +4 more
doaj   +1 more source

Direct fiber vector eigenmode multiplexing transmission seeded by integrated optical vortex emitters [PDF]

, 2017
Spatial modes have received substantial attention over the last decades and are used in optical communication applications. In fiber-optic communications, the employed linearly polarized modes and phase vortex modes carrying orbital angular momentum can ...
Cai, Xin-Lun, Chen, Shi, Du, Cheng, Klitis, Charalambos, Li, Shi-Mao, Liu, Jun, Mo, Qi, Sorel, Marc, Wang, An-Dong, Wang, Jian, Yu, Si-Yuan, Zhu, Long   +11 more
core   +1 more source

Reaction of fiber flax varieties to seeding rates, sowing time and optimization of mineral nutrition on sod-podzolic medium- cultivated soils in the Pskov region

Аграрная наука Евро-Северо-Востока, 2020
The article presents the results of scientific research for 2014-2019 on the reaction of early-maturing fiber flax varieties (Linum usitatissimum L.) of the Pskov selection Peresvet, Kvartet, Voskhod and Dobrynya to growing conditions: sowing time ...
A. D. Stepin, M. N. Rysev, T. A. Ryseva, S. V. Utkina, N. V. Romanova   +4 more
doaj   +1 more source

Linerboard made from Soda-Anthraquinone (Soda-AQ) treated coconut coir fiber and effect of pulp beating [PDF]

, 2015
The performance of coir fiber in the production of linerboard made from soda-anthraquinone (soda-AQ) pulp was evaluated. Based on chemical analysis, the composition of coir fiber is suitable for the pulping process.
A. Talib, Rosnita, Abdul Rahman, Russly, Ibrahim, Rushdan, Main, Nor Mazlana, Mohamed, Ainun Zuriyati   +4 more
core   +2 more sources

Recognition Preference of Rhodamine Derivative Bearing Phthalimido Gly for Hg2+ by UV-Vis and Fluorescence Spectroscopy

Journal of Spectroscopy, 2013
An effective Hg2+-specific probe 1 was designed and prepared based on Phthalimido Gly modified rhodamine B. The sensing behavior of probe 1 was studied by UV-Vis and fluorescence spectroscopy.
Fanyong Yan, Meng Wang, Donglei Cao, Ning Yang, Bin Ma, Li Chen   +5 more
doaj   +1 more source

Distribution of fibers in SFRC segments for tunnel linings [PDF]

, 2016
This paper presents research results regarding the distribution of steel fibers in concrete used to build precast tunnel segments for Line 9 of the Barcelona Metro.
Aguado de Cea, Antonio, Carmona, Sergio, Molins i Borrell, Climent, Mora, Felipe   +3 more
core   +2 more sources

High-brightness table-top coherent XUV source at 130eV [PDF]

EPJ Web of Conferences
We present a highly stable, easy-to-use, table-top coherent XUV source delivering a brightness of >1kW/(mm²sr)/1%BW at 130eV (9.5nm). It is based on high-harmonic generation driven by an ultrastable ytterbium-based fiber laser and a multipass-cell-based ...
Tschernajew Maxim, Hilbert Vinzenz, Klas Robert, Heilmann Anke, Herrfurth Oliver, Breitkopf Sven, Rothhardt Jan, Eidam Tino, Limpert Jens   +8 more
doaj   +1 more source

Screening of fiber flax varieties from the VIR collection according to flax fiber yield and adaptability parameters in the conditions of the Nortwestern region

Аграрная наука Евро-Северо-Востока, 2020
The article presents the results of screening of 20 varieties of fiber flax (Linum usitatissimum L.) according to the yield of flax fiber and adaptability parameters in the conditions of the Northwestern region. The variety Dobrynya (Russia) zoned in the
A. D. Stepin, M. N. Rysev, T. A. Ryseva, S. V. Utkina, N. V. Romanova   +4 more
doaj   +1 more source

Preparation of Chiral Epoxy Resins and the Optically Active Cured Products

Advances in Polymer Technology, 2023
Chirality is one of the most common and significant phenomenon in nature, and epoxy resin is one of the most widely used and researched thermosetting resins, however the influences of chiral carbon in epoxy group on the performances of the cured epoxy ...
Xinyuan Tang, Ming Hu, Xiaoran Liu, Yanyun Li, Junying Zhang, Jue Cheng   +5 more
doaj   +1 more source