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Introduction: Micrometeoritic impacts on lunar soils produce melt and vapor [1]. A patina of condensed vapor is deposited on lunar grains [2], the melt forms agglutinitic glass [3]. In lunar soils, agglutinitic glass and rinds of grains host submicron-sized globules of pure Fe (Fe-rich globules larger than 1 micron usually contain other elements such as Ni,(More)
The use of different waste materials such as Atlantic Cod fish scale, chicken fat, coconut fibre and charcoal in removing arsenic [As(III) and As(V)] from aqueous solutions was investigated. Initial experimental runs, conducted for both As(III) and As(V) with the aforementioned materials, demonstrated the potential of using Atlantic Cod fish scale in(More)
A simple method is proposed for studying the spectral response of a first-order waveguide grating filter with random fluctuations in the period of the grating. The method can be applied to any grating groove shape, and it can be used to study the effect of both random and systematic variations in other grating filter parameters. The numerical calculations(More)
The East African Orogen formed as a result of collision between portions of East and West Gondwanaland as the Mozambique Ocean closed in Late Neoproterozoic time, but it is not known exactly when. We use distinctive chemical and isotopic composition of deformed ‘schistose’ dykes in southern Israel to argue that this collision occurred after about 630 Ma,(More)
A series of careful and systematic measurements is made to determine the reflection, transmission, and radiation loss coefficients of second- and third-order waveguide grating filters, and the dependence of these coefficients on the wavelength of the incident light. The experimental measurements are found to agree very well with results of calculations made(More)
Despite its intrinsic advantages as a sensor material for the detection of gamma and X radiation, CdTe has proved a difficult material to produce consistently and in sufficient quantities. We report further developments of a vapour phase technique, which has provided significant advantages over current melt growth technologies. Crystals of up to 50 mm in(More)
Introduction: Impacts on lunar soils produce melt and vapor in an approximate proportion of 7:1 [1]. The melt scavenges soil grains of diverse size, quenches and forms agglutinates, thereby converting surface correlated components of soil grains as volume correlated components; simultaneously, parts of the vapor may condense or escape. Cumulative small(More)