Results 21 to 30 of about 2,214,423 (346)

THE ROLE OF MONOVALENT IONS IN THE DETERIORATION OF SOME PHYSICAL PROPERTIES OF CALCAREOUS SOILS IN NORTHERN IRAQ [PDF]

open access: yesMesopotamia Journal of Agriculture
Twelve soil samples of different textures and carbonate minerals were selected from the great soil group (Calciortheds) in northern Iraq. In order to describe the effect of the concept of mono cations ratios (potassium and sodium) responsible for the ...
Saja Albarzanjy   +2 more
doaj   +1 more source

Justification of mixer parameters for flour components

open access: yesТехнічна інженерія, 2022
The need to provide the bakery and confectionery industries with new high-tech equipment that would ensure high-quality preparation of mixtures for the main processes in the production of flour semi-finished products with high-quality mixing of dosing ...
V.A. , I.Ya. , A.O. , Ye.A.
doaj   +1 more source

Symmetry Breaking in Photonic Crystals: On-Demand Dispersion from Flatband to Dirac Cones [PDF]

open access: yes, 2017
We demonstrate that symmetry breaking opens a new degree of freedom to tailor the energy-momentum dispersion in photonic crystals. Using a general theoretical framework in two illustrative practical structures, we show that breaking symmetry enables an ...
Cueff, Sébastien   +8 more
core   +2 more sources

Tracer Dispersion in Rough Open Cracks [PDF]

open access: yes, 1998
Tracer dispersion is studied in an open crack where the two rough crack faces have been translated with respect to each other. The different dispersion regimes encountered in rough-wall Hele-Shaw cell are first introduced, and the geometric dispersion ...
Hulin, Jean-Pierre   +2 more
core   +3 more sources

Dispersion cancellation in high resolution two-photon interference [PDF]

open access: yes, 2013
The dispersion cancellation observed in Hong-Ou-Mandel (HOM) interference between frequency-entangled photon pairs has been the basis of quantum optical coherence tomography and quantum clock synchronization.
Ishida, Shutaro   +5 more
core   +2 more sources

Frequency-Oriented Subsampling by Photonic Fourier Transform and I/Q Demodulation

open access: yesIEEE Photonics Journal, 2017
Subsampling can directly acquire a passband within a broad radio frequency (RF) range, avoiding down-conversion and low-phase-noise tunable local oscillation. However, subsampling suffers from band folding and self-image interference.
Wenhui Hao   +7 more
doaj   +1 more source

Curvilinear Coordinate System Used To Solve Tritium Dispersion In Complex Orographies.

open access: yesBrazilian Journal of Radiation Sciences, 2021
In this contribution we present progress on research concerning dispersion of tritium around the Angra Nuclear Power Plant (Angra dos Reis, Rio de Janeiro state, Brazil).
André Meneghetti   +2 more
doaj   +1 more source

Giant Nonlinear AlGaAs-Doped Glass Photonic Crystal Fibers for Efficient Soliton Generation at Femtojoule Energy

open access: yesIEEE Photonics Journal, 2019
In this paper, a unique semiconductor-doped glass photonic crystal fiber has been designed, which is suitable for soliton propagation at femto-Joule energy.
Mohit Sharma   +6 more
doaj   +1 more source

Channel Capacity of Wavelength Division Multiplexing-Based Brillouin Optical Time Domain Sensors

open access: yesIEEE Photonics Journal, 2018
We propose and demonstrate a novel WDM-based Brillouin optical time domain analysis (BOTDA) sensor using Brillouin loss configuration, and theoretically analyze channel capacity of WDM-based brillouin optical time domain reflectometry (BOTDR) and BOTDA ...
Zelin Zhang, Yuangang Lu, Yunqin Zhao
doaj   +1 more source

Beneficiation of Low Grade Calcium Bentonite Claystone [PDF]

open access: yesEngineering and Technology Journal, 2018
The beneficiation of Ca-bentonite claystone has been studied with dispersion sedimentation technique using polyionic salts as dispersant.The claystone is located in the Western Desert of Iraq.
Hijran Toama   +2 more
doaj   +1 more source

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