If you are interested in our plant filtration see my blog. In our system, which uses plant filtration, we can afford to overfeed without causing problems, so I do (Susie, wife and business partner, objects due to cost, but the fish appreciate it). Muck (I usually call this mulm) from our vats collected during cleaning could be dumped in as a rich food source. System water could run in one end and out the other, flowing over a substrate of aquaculture netting and providing water exchange for the worms. I’ve toyed with the idea of buying a cattle feed trough from our local agriculture store and converting it into a raceway placed over our sumps at the ends of the greenhouses. Everything I’ve ever read about Tubifex says they don’t do well much over 70☏ (21☌). I was surprised when they continued to flourish throughout our long, hot summers when greenhouse water temperatures routinely exceed 85☏ (29.5☌). They do well with mollies and rainbowfishes.
I have no idea what species, but they thrive in the muck on the bottom of the vats, but only in vats where the fish don’t poke around in the muck. Study paves the way towards a new research field of `living polymers'.Years ago in some of our vats I found clumps of Tubifex worms. Scale of the activity, and (iii) the low shear viscosity as a function ofĬoncentration shows a very different scaling from that of regular polymers. We find that (i) shear thinning is reduced by activity, (ii) theĬharacteristic shear rate for the onset of shear-thinning is given by the time Temperature or by adding small amounts of alcohol to make the worms temporarily Its level of activity can be controlled by changing the Here we experimentally study the rheology of long, slender andĮntangled living worms (Tubifex tubifex) and propose this system as a new type Where the coupling of filament activity, hydrodynamic interactions, andĬonformations open the way to a plethora of novel structural and dynamicalįeatures. Situation is markedly different when we move from passive to active polymers Polymers allows us to predict for instance the shear-thinning rheology and theīehaviour in virtually any flow situation of practical importance. In-depth insight into the entanglement and reptation of individual Tubifex Worms, by Antoine Deblais and 2 other authors Download PDF Abstract: Of all complex fluids, it is probably the rheology of polymers we understandīest. Download a PDF of the paper titled Rheology of Active Polymer-like T.
0 kommentar(er)
