Gtunshot wounds of the extremities, when complicated with compound fractures, and splintering of the bones, are justly regarded as most serious injuries, so much so, that the hope of saving a limb under such circumstances, is seldom entertained ; for, independent of the danger of mortification, which, in the first instance, is always to be apprehended, and the chance of the patient ultimately s...

This article uses grounded theory methods to research the history of a therapeutic community and highlights the possibilities of ‘being able to learn’ as an aim for history of medicine research. For this case study, processes of research and learning allow consideration of the ‘dilemma of paternalism’ and the interaction between history, policy and practice. How can students enter into discours...

We analyze the predictions of a reaction advection di usion model to pinpoint the nec essary conditions for bloom development of sinking phytoplankton species in strati ed waters This reveals that there are two parameter windows that can sustain sinking phytoplankton a turbulence window and a thermocline depth window The two win dows are delimited by four critical parameters a minimal and maxim...

We analyze the predictions of a reaction advection di usion model to pinpoint the nec essary conditions for bloom development of sinking phytoplankton species in strati ed waters This reveals that there are two parameter windows that can sustain sinking phytoplankton a turbulence window and a thermocline depth window The two win dows are delimited by four critical parameters a minimal and maxim...

The flux of organic particles below the mixed layer is one major pathway of carbon from the surface into the deep ocean. The magnitude of this export flux depends on two major processes-remineralization rates and sinking velocities. Here, we present an efficient method to measure sinking velocities of particles in the size range from approximately 3-400 μm by means of video microscopy (FlowCAM®...

The flux of materials to the deep sea is dominated by larger, organic-rich particles with sinking rates varying between a few meters and several hundred meters per day. Mineral ballast may regulate the transfer of organic matter and other components by determining the sinking rates, e.g. via particle density. We calculated particle sinking rates from mass flux patterns and alkenone measurements...

The ability of bivalve filter feeders to limit phytoplankton biomass in shallow waters is well-documented, but the role of bivalves in shaping phytoplankton communities is not. The coupled effect of bivalve grazing at the sediment-water interface and sinking of phytoplankton cells to that bottom filtration zone could influence the relative biomass of sinking (diatoms) and non-sinking phytoplank...