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Review of Carbonation Resistance in Hydrated Cement Based Materials
(Hindawi, 2019)
Blended cements are preferred to Ordinary Portland Cement (OPC) in construction industry due to costs and technological and
environmental benefits associated with them. Prevalence of significant quantities of carbon dioxide ...
Seagrass Removal Leads to Rapid Changes in Fauna and Loss of Carbon
(Frontiers, 2019-03)
Seagrass habitats are important natural carbon sinks, with an average of ∼14 kg C
m−2 buried in their sediments. The fate of this carbon following seagrass removal
or damage has major environmental implications but is ...
Effects of biocementation on some properties of cement-based materials incorporating Bacillus Species bacteria – a review
(Taylor and Francis, 2019-11)
There is a growing need in the construction industry to improve transfer and
durability aspects of Portland pozzolana cement. Ureolytic bacteria have recently
emerged as potential micro-organisms well known for precipitation ...
Library Literacy Program Library as Battleground for Fighting Fakenews
(2019-03-18)
Library literacy programs have continued to play a pivotal role in ensuring
that students only consume the information necessary to their studies in
the wake of fake news. Before the introduction of the Internet as an ...
A uniform circular array of isotropic sensors that stochastically dislocate in three dimensions—The hybrid Cramer-Rao bound of direction-of-arrival estimation
(Acoustical Society of America, 2019-07)
An array’s constituent sensors could be spatially dislocated from their nominal positions. This
paper investigates how such sensor dislocation would degrade a uniform circular array (UCA) of
isotropic sensors (like ...
Azolla Fern in Mwea Irrigation Scheme and Its Potential Nitrogen Contribution in Paddy Rice Production
(Canadian Center of Science and Education, 2019-11)
Azolla fern is invasive in Mwea Irrigation Scheme in Kenya and its management in paddy rice fields is a
challenge to farmers. A survey was undertaken to establish farmer’s knowledge and potential nitrogen
contribution ...
Hybrid Cram er-Rao bound of direction finding, using a triad of cardioid sensors that are perpendicularly oriented and spatially collocated
(Acoustical Society of America, 2019-07)
Cardioid microphones/hydrophones are highly directional acoustical sensors, which enjoy easy
availability via numerous commercial vendors for professional use. Collocating three such cardioids
in orthogonal orientation ...
Cramer-Rao Bound of Direction Finding Using Uniform Arc Arrays
(2019)
Direction-of-Arrival estimation accuracy using arc array geometry is considered in this paper.
There is a scanty use of Uniform Arc Array (UAA) in conjunction with Cram er-Rao bound (CRB)
for Direction-of-Arrival estimation. ...
Species composition, abundance and fishing methods of small-scale fisheries in the seagrass meadows of Gazi Bay, Kenya
(Routledge, 2019-05)
Fisheries are important sources of livelihoods to coastal
communities. In the tropics fishing is conducted from mangroves,
seagrass meadows to coral reefs. Studies on fisheries in the
tropics have focused on coral reef ...