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Observations on the Low-Energy Limits for Metal-to-Ligand Charge-Transfer Excited-State Energies of Ruthenium(II) Polypyridyl Complexes
(2010)
The 77 K emission spectral maxima of bis(bipyridine)ruthenium(II) complexes are found to approach a limit at energies below about 14 000 cm−1. There is also evidence for related low-energy excited-state limits in some other ...
Indigenous Knowledge of Climatic Conditions for Sustainable Crop Production under Resource-Poor Farming Conditions Using Participatory Techniques
(University of Nairobi, 2013)
Rambuda irrigation scheme is situated in Vhembe District of Limpopo Province in South Africa. It was
established in 1952 and farmers do not have access to recorded climatic information. Farmers are growing crops
on a ...
Total pancreatectomy: indications, operative technique, and results
(2010)
The aims of this study were to identify the indications to perform a total pancreatectomy and to evaluate the outcome and quality of life of the patient who underwent this operation. A retrospective analysis of a prospective ...
Effects of Electronic Mixing in Ruthenium(II) Complexes with Two Equivalent Acceptor Ligands. Spectroscopic, Electrochemical, and Computational Studies
(2010)
The lowest energy metal to ligand charge transfer (MLCT) absorption bands found in ambient solutions of [Ru(NH3)4(Y-py)2]2+ and [Ru(L)2(bpy)2]+ complexes (Y-py a pyridine ligand and (L)n a substituted acetonylacetonate, ...
Computational Modeling of the Triplet Metal-to-Ligand Charge-Transfer Excited-State Structures of Mono-Bipyridine–Ruthenium(II) Complexes and Comparisons to their 77 K Emission Band Shapes
(2013)
A computational approach for calculating the distortions in the lowest energy triplet metal to ligand charge-transfer (3MLCT = T0) excited states of ruthenium(II)–bipyridine (Ru–bpy) complexes is used to account for the ...
Limitations to Use of Infrared Spectroscopy for Rapid Determination of Carbon-Nitrogen and Wood Density for Tropical Species
(University of Nairobi, 2013)
Infrared (IR) spectroscopy was used as a rapid and non-destructive method to determine, carbon (C), nitrogen (N) and tree wood density.A total of 82 sample cores were scanned in the reflectance mode from 4000 to 400 cm-1 ...
Feasibility for direct rapid energy dispersive X-ray fluorescence (EDXRF) and scattering analysis of complex matrix liquids by partial least squares
(University of Nairobi, 2012-11)
The greatest challenge to material characterization by XRF technique is encountered in direct trace analysis of complex matrices. We exploited partial least squares (PLS) in conjunction with energy dispersive X-ray ...
MAXWELL SYSTEM WITH NONLINEARLY FORCED POLARIZATION IN COMPLEX MATERIALS WITH UNCERTAINTY
(University of Nairobi., 2011)
We consider the propagation of high frequency electromagnetic pulses in complex materials with nonlinear forced polarization. The physical problem is modeled by Maxwell’s equations in variational form, and well-posedness ...