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Preparation and Properties of Long Afterglow CaAl2O4 Phosphors Activated by Rare Earth Metal Ions
(University of the Free State Republic of South Africa, 2011-11)
This work comprises of several aspects of calcium-aluminate phosphor activated with rare earth metal ions i.e. (CaAl2O4:Eu2+, Nd3+, and Dy3+). In particular the luminescent and structural properties of the long afterglow ...
Microplastic Abundance, Composition and Distribution in the Endorheic Lake Naivasha, Kenya
(University of Embu, 2020-10-28)
Plastic pollution has recently gained global concern due to the negative effect it presents on both the environment and human health. In the environment, plastics degrade yielding millions of micro- and nano-scale plastic ...
Structure and Biomass Accumulation of Natural Mangrove Forest at Gazi Bay, Kenya
(Kenyatta University, 2013-08)
Mangroves occupy only 0.4% of forested areas globally but are among the most productive
ecosystems on earth. They account for about 11% of the total input of terrestrial carbon into the
oceans. The above ground carbon ...
Low Cost Pozzolana based Cement from Industrial and Agricultural Waste Materials
(Kenyatta University, 2003-09)
This thesis reports the results of a study aimed at making low cost cement from
some agricultural and industrial wastes. The utilization of these wastes would
avail an economical and environmentally friendlier waste ...