Background: Land degradation is one of the major challenges in developing nations like Ethiopia. The study was conducted on both conserved and non-conserved land. A total 18 composite soil samples were collected from top 0-20 cm depths to analyze selected physical chemical properties soil. Methods: For data analysis one-way variance (ANOVA) used. From our observation water conservation practice...

Cancer therapy with oncolytic measles virus (MV) requires high titers of pure, infectious particles (~108 times more per dose than the vaccine). A gentle but efficient downstream purification process is therefore essential. Here we investigated suitability ion-exchange chromatography for MV using resin-based stationary phases. The success was evaluated based on yield, ratio to total particles, ...

The chemistry community now recognizes the cation-π interaction as a major force for molecular recognition, joining the hydrophobic effect, the hydrogen bond, and the ion pair in determining macromolecular structure and drug-receptor interactions. This Account provides the author's perspective on the intellectual origins and fundamental nature of the cation-π interaction. Early studies on cyclo...

System Identi cation for linear systems and models is a well established and mature topic. Identifying nonlinear models is a much more rich and demanding problem area. In this presentation some major approaches and concepts for that are outlined

In this study, the effect of variety of Nano- additives doping on the hydration resistance of the MgO-CaO system was investigated. Samples were prepared from calcined dolomite and magnesite. Nano-additives that contained cations with various valences (trivalent and tetravalent) used as  a dopant. The bulk density, apparent porosity and hydration resitance were studied and evaluated. Also, phase...

When verifying speci cations of reactive systems|which are at least nonterminating computer programs|the complexity of the veri cation algorithm is a major problem of practical relevance. Speci cations of practical interest are usually too large to be veri ed by standard veri cation methods in an acceptable amount of time. So what can we do? We can try to get rid of information in the speci cat...

The cation binding strength of calix[4]pyrroles in the gas phase has been evaluated by computational studies and further substantiated by ESI mass spectrometry experiments. The DFT optimized geometries of [CP + X](+) complexes are found to be stable in a 1,3-alternate conformation through cation-π interactions and interestingly CPs are found to be better cation receptor than calix[4]arenes. The...

Accurate modeling of multicomponent sorption and transport of major cations in subsurface porous media is a prerequisite for predicting complex environmental processes, such as the movement of trace metals in soils and aquifers. In this study, various cation exchange models were compared in their ability to predict ternary Ca–Mg–Na transport in an acidic soil from binary Ca, Mg, and Na adsorpti...