Development of highly flexible broadband networks incorporating wavelength division multiplexing and sub-carrier division multiplexing in a hybrid radio/fiber distribution system [PDF]
, 2003 A radio over fiber distribution system incorporating both SCM and WDM technologies is presented. The SCM signal contains five 155 Mbit/s data channels, centered around 18.5 GHz with 450 MHz spacing. This signal is directly modulated onto three high-speed
Anandarajah, Prince M. +5 more
core +2 more sources
Continuous Homogeneously Catalyzed Hydrogenation of CO2 to Formic Acid in Miniplant Scale
Chemie Ingenieur Technik, EarlyView.A homogeneously catalyzed multiphase reaction for CO2 hydrogenation to formic acid is demonstrated in a continuous miniplant. The study focuses on catalyst recycling, product stability, and the impact of gas composition on formic acid formation. ABSTRACT A homogeneously catalyzed, high‐pressure hydrogenation reaction to convert carbon dioxide to formic
Christoph Kabatnik +8 more
wiley +1 more source
Fundamentally mode-locked, femtosecond waveguide oscillators with multi-gigahertz repetition frequencies up to 15 GHz [PDF]
, 2013 We demonstrate passively mode-locked Yb3+-doped glass waveguide lasers in a quasi-monolithic configuration with a maximum pulse repetition frequency up to 15.2 GHz.
Lagatsky, Alexander A. +8 more
core +1 more source
Hydrogen donor‐assisted visbreaking of Canadian oil sands bitumen
The Canadian Journal of Chemical Engineering, EarlyView.Abstract High‐viscosity Canadian oil sands bitumen requires processing for efficient transportation and refining. Partial upgrading technologies, primarily based on thermal processing, can effectively reduce, or even eliminate, the use of costly diluent, increase bitumen quality and market value, potentially decrease greenhouse gas (GHG) emissions, and
Yi Zhang, Mohamed Ali, Jinwen Chen
wiley +1 more source
Triple-wavelength fiber ring laser based on a hybrid gain medium actively mode-locked at 10 GHz [PDF]
, 2008 A fiber ring laser based on a hybrid gain medium that produces three simultaneously mode-locked wavelength channels is presented. The lithium niobate based modulator used to actively mode-lock the laser cavity at 10 GHz is birefringence compensated to ...
Anandarajah, Prince M. +10 more
core +2 more sources
Role of Lewis centres on ethanol dehydrogenation over the Cu‐Cr/γ‐Al2O3 system
The Canadian Journal of Chemical Engineering, EarlyView.Cu–Cr interactions on alumina enhance Lewis acid site density, boosting selectivity towards ethanol dehydrogenation products. Soft coke formation on copper and Cu–Cr sites drives deactivation, shifting the reaction towards unwanted dehydration products.
Sakun Preedavijitkul +7 more
wiley +1 more source
A 36 channel x 10 GHz spectrally sliced pulse source based on supercontinuum generation in normally dispersive highly nonlinear holey fibre [PDF]
, 2003 We demonstrate a spectrally sliced pulse source which utilizes supercontinuum generated in a normally dispersive holey fiber and spectral slicing in an arrayed waveguide grating.
Furusawa, K. +11 more
core +1 more source
Experimental methods in chemical engineering: Temperature‐programmed oxidation—TPO
The Canadian Journal of Chemical Engineering, EarlyView.Abstract Temperature‐programmed oxidation (TPO) probes the oxidative capacity and redox properties of solid materials—catalysts, metal oxides, perovskites, and carbonaceous deposits. It identifies coke type, distribution, and reactivity. TPO instruments pass an oxidizing gas (diluted O2$$ {\mathrm{O}}_2 $$, air, or less commonly N2O$$ {\mathrm{N}}_2 ...
Gholamreza Roohollahi +7 more
wiley +1 more source
On the Development of a Modified Triangular Patch Antenna Array for 4.9 GHz Public Safety WLAN
Advanced Electromagnetics, 2019 The present paper reports on the development of a Novel Patch Antenna Array for 4.9 GHz Public Safety WLAN applications. In today’s era of advanced technology, high speed video surveillance is very crucial from security point of view. Public safety surveillance services below 1 GHz are mainly used in voice surveillance services, whereas 4.9 GHz Public ...
G. Singh, A. P. Singh
openaire +3 more sources
The Astrophysical JournalThe role of cooling gas in triggering active galactic nucleus (AGN) feedback in the centers of galaxy groups and clusters remains a key open question. NGC 5044, the X-ray-brightest galaxy group, hosts the largest known reservoir of molecular gas among ...
Francesco Ubertosi +10 more
doaj +1 more source