Johanna Theresia van Essen Faculty of Electrical Engineering, Mathematics and Computer Science Department of Applied Mathematics Discrete Mathematics and Mathematical Programming Group Center for Healthcare Operations Improvement and Research Due to an aging population and increased healthcare costs, hospitals are forced to use their resources more efficiently. Practitioners in hospitals often ...

Abstract Rocky bodies of the inner solar system display a systematic depletion “moderately volatile elements” (MVEs) that correlates with expected condensation temperature their likely host materials under protoplanetary nebula conditions. In this paper, we present and test new hypothesis in which open-system loss processes irreversibly remove vaporized MVEs from high altitudes, leaving behind ...

dependence on chemical fertilizer continually is increasing. continual increasing of using chemicalfertilizer causes nature pollution (e.g. water contamination). this has led researchers to aggressively investigate renewable fertilizer resources, biomass, to produce organic crops and reduced wastage. wormy compost is a bulk solid and biomass feed stocks. wormy compost flow is obstacle as it oft...

The main focus of this study is improvement of the steam-methane reforming (SMR) process by in-situ CO2 removal to produce high hydrogen content synthesis gas. Sorption-enhanced (SE) concept is applied to improve process performance. In the proposed structure, the solid phase CO2 adsorbents and pre-reformed gas stream are introduced to a gas-flowing solids-fixed bed reactor (GFSFBR). One dimens...

We analyze the properties of a model with four-dimensional brane-localized Higgs type potential of a six dimensional scalar field satisfying the Dirichlet boundary condition on the boundary of a transverse two-dimensional compact space. The regularization of the localized couplings generates classical renormalization group running. A tachyonic mass parameter grows in the infrared, in analogy wi...

The nature of solids-liquid flows often results in non-uniform profiles of solids volume fraction and axial solids velocity across the flow cross-section. In order to measure the solids volumetric flow rate in these situations it is necessary to measure the profiles of the local solids volume fraction and axial solids velocity and to obtain mean values of the solids volume fraction, solids axia...

Floating vegetation islands (FVIs) have been widely utilized in various river ecological restoration projects due to their ability purify pollutants. FVIs float at the surface of shallow pools with roots unanchored sediment. Biofilm formed by under filters nutrients and particles water flowing through it. Flow field disturbance will occur, transverse distribution flow velocity change existence ...

Currant Creek, a second order stream in southwestern Wyoming, has three large complexes of beaver ponds midway along its 32 km length. To determine whether these ponds improve the quality of water flowing through them, during spring and summer of 1984 and 1985 water samples were taken upstream from, within, and downstream from the pond complexes. During periods of high flow (i.e. spring runoff)...