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A general approach to derive summation rules in electromagnetics using Herglotz functions is presented in this paper. This approach is then used to obtain summation rules and bounds on partial wave scattering, which are illustrated numerically by the scattering of a Drude sphere.
Cellulose can be chemically modified to produce derivatives with specific properties. Knowledge of correlations between the modification reaction, substituent distribution, origin of cellulose and properties are importaint in order to design processess so as to produce derivatives with the desired properties. This thesis describes research on newly developed analytical methods for the analysis of
Wastewater treatment is a worldwide necessity that is even more crucial to countries deprived from abundant fresh water sources or unable to afford advanced and costly processes. With this perspective, this thesis was conducted within an Egyptian-Swedish research collaboration that aimed to develop solar-based (as free renewable energy source available locally) process for hazardous wastewater tre
We used three animal models of rats for rheumatoid arthritis (RA) in this study. Firstly, We found that CXI induced arthritis (CXIIA) is associated with the RT1 f haplotype and follows a chronic disease course affecting peripheral joints with both progression and relapses. The main difference of pathological changes in CXIIA rats against rats with CIIIA was a larger number of infiltrating lymphocy
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We present CasADi, a free, open-source software tool for rapid, yet efficient solution of optimization problems in general and dynamic optimization problems in particular. To the developer of algorithms for numerical optimization and to the advanced user of such algorithms, it offers a level of abstraction which is notably lower, and hence more flexible, than that of algebraic modeling languages s
The direct problem of time dependent electromagnetic scattering in the dispersive sphere is solved by a wave splitting technique. The electric field is expanded in a series involving vector spherical harmonics, leading to a system of wave equations for each term. These systems are reduced to scalar wave equations for each term, which are solved via reflection operators. Some preliminary numerical
The paper deals with various initiatives undertaken, or to be undertaken, by Government of Botswana, and which may be looked upon as "Information Society" initiatives. These initiatives are critically analysed and conclusions are drawn from the authors' analysis. Based on conclusions, the authors make certain recommendations regarding implementation of the initiatives.
Ukraine (UA) has large biomass potentials, and faces broad needs for energy security enhancement, agricultural sector revitalisation and environmental improvement. Cross case study analysis is applied to nine straw-fired installations in UA within a conceptual framework developed by the authors. The analysis yields three distinct straw-based frameworks for organisation and action including ‘small
This study is concerned about the effects of brine discharge into the Arabian Gulf and desalination plants location also. The major concern is the Arabian coastline of the Gulf countries which started from Kuwait whole way to United Arab Emirates. Different scenarios for desalination plant and brine discharge management in the Arabian Gulf are discussed using mass balance computations. The Arabian
Experiments on dry face turning offunctionallygraded heat treatable steel are conducted. The workpieces have a hardened zone of approx. 60 HRC and a non-hardened zone of approx. 30 HRC. PCBN tools are used with different feeds, cutting speeds and depths of cut. Measurements of residual stresses in the surface layer reveal compressive stresses in the hardened zone and tensile stresses in the non-ha
In modern industrialised society prepared meals and eating out of home is an increasing phenomenon. This develops new business opportunities for food manufacturers, since they need to create more convenience to the consumers through food that can be prepared and served quickly. However, the new food products require increased quality and safety and thereby more controlled distribution. The issue i
