The feeding of trout during the filling phase of Rutland Water

D. M. Harper

doi:10.1007/bf00008313

The feeding of trout during the filling phase of Rutland Water

Rutland Water — Decade of Change ◽

10.1007/978-94-009-8006-8_27 ◽

1982 ◽

pp. 191-198 ◽

Cited By ~ 10

Author(s):

D. M. Harper

Keyword(s):

Rutland Water ◽

Filling Phase

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The Influence of Equipment Design and Process Parameters on Granule Breakage in a Semi-Continuous Fluid Bed Dryer after Continuous Twin-Screw Wet Granulation

Pharmaceutics ◽

10.3390/pharmaceutics13020293 ◽

2021 ◽

Vol 13 (2) ◽

pp. 293

Author(s):

Alexander Ryckaert ◽

Michael Ghijs ◽

Christoph Portier ◽

Dejan Djuric ◽

Adrian Funke ◽

...

Keyword(s):

Process Development ◽

Wet Granulation ◽

Major Goal ◽

Drying Time ◽

Process Step ◽

Manufacturing Line ◽

Fluid Bed ◽

Twin Screw ◽

Filling Phase ◽

Twin Screw Granulation

The drying unit of a continuous from-powder-to-tablet manufacturing line based on twin-screw granulation (TSG) is a crucial intermediate process step to achieve the desired tablet quality. Understanding the size reduction of pharmaceutical granules before, during, and after the fluid bed drying process is, however, still lacking. A first major goal was to investigate the breakage and attrition phenomena during transport of wet and dry granules, the filling phase, and drying phase on a ConsiGma-25 system (C25). Pneumatic transport of the wet granules after TSG towards the dryer induced extensive breakage, whereas the turbulent filling and drying phase of the drying cells caused rather moderate breakage and attrition. Subsequently, the dry transfer line was responsible for additional extensive breakage and attrition. The second major goal was to compare the influence of drying air temperature and drying time on granule size and moisture content for granules processed with a commercial-scale ConsiGma-25 system and with the R&D-scale ConsiGma-1 (C1) system. Generally, the granule quality obtained after drying with C1 was not predictive for the C25, making it challenging during process development with the C1 to obtain representative granules for the C25.

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Post‐filling phase ichthyofaunal community and fishery potential of Chitsuwa Reservoir, a small tropical reservoir in Zimbabwe

Lakes & Reservoirs Research & Management ◽

10.1111/lre.12394 ◽

2022 ◽

Vol 27 (1) ◽

Author(s):

Takudzwa C. Madzivanzira ◽

Chipo Mungenge ◽

Adroit T. Chakandinakira ◽

Nyasha Rugwete ◽

Blessing Kavhu

Keyword(s):

Tropical Reservoir ◽

Filling Phase

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Relationship between the membrane potential of the contractile vacuole complex and its osmoregulatory activity inParamecium multimicronucleatum

Journal of Experimental Biology ◽

10.1242/jeb.205.20.3261 ◽

2002 ◽

Vol 205 (20) ◽

pp. 3261-3270 ◽

Cited By ~ 4

Author(s):

Heidi K. Grønlien ◽

Christian Stock ◽

Marilynn S. Aihara ◽

Richard D. Allen ◽

Yutaka Naitoh

Keyword(s):

Reference Electrode ◽

Maximum Level ◽

The Other ◽

Contractile Vacuole ◽

Hypertonic Solution ◽

Hypotonic Solution ◽

Atpase Inhibitor ◽

Filling Phase ◽

High Level

SUMMARYThe electric potential of the contractile vacuole (CV) of Paramecium multimicronucleatum was measured in situ using microelectrodes,one placed in the CV and the other (reference electrode) in the cytosol of a living cell. The CV potential in a mechanically compressed cell increased in a stepwise manner to a maximal value (approximately 80 mV) early in the fluid-filling phase. This stepwise change was caused by the consecutive reattachment to the CV of the radial arms, where the electrogenic sites are located. The current generated by a single arm was approximately 1.3×10-10 A. When cells adapted to a hypotonic solution were exposed to a hypertonic solution, the rate of fluid segregation, RCVC, in the contractile vacuole complex (CVC) diminished at the same time as immunological labelling for V-ATPase disappeared from the radial arms. When the cells were re-exposed to the previous hypotonic solution, the CV potential, which had presumably dropped to near zero after the cell's exposure to the hypertonic solution, gradually returned to its maximum level. This increase in the CV potential occurred in parallel with the recovery of immunological labelling for V-ATPase in the radial arm and the resumption of RCVC or fluid segregation. Concanamycin B, a potent V-ATPase inhibitor, brought about significant decreases in both the CV potential and RCVC. We confirm that (i) the electrogenic site of the radial arm is situated in the decorated spongiome, and (ii) the V-ATPase in the decorated spongiome is electrogenic and is necessary for fluid segregation in the CVC. The CV potential remained at a constant high level(approximately 80 mV), whereas RCVC varied between cells depending on the osmolarity of the adaptation solution. Moreover, the CV potential did not change even though RCVC increased when cells adapted to one osmolarity were exposed to a lower osmolarity, implying that RCVC is not directly correlated with the number of functional V-ATPase complexes present in the CVC.

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Changing food habits of Macquarie perch, Macquaria australasica Cuvier (Pisces : Percichthyidae), during the initial filling phase of Lake Dartmouth, Victoria

Marine and Freshwater Research ◽

10.1071/mf9860647 ◽

1986 ◽

Vol 37 (5) ◽

pp. 647 ◽

Cited By ~ 8

Author(s):

PL Cadwallader ◽

J Douglas

Keyword(s):

Water Level ◽

Food Supply ◽

Food Habits ◽

North Eastern ◽

Riverine Habitat ◽

Filling Phase

The composition of the diet of Macquarie perch changed markedly during the various stages of rising and falling water-level during the initial filling phase of Lake Dartmouth, an impoundment formed by the construction of Dartmouth Dam on the Mitta Mitta River in north-eastern Victoria. Macquarie perch fed on typical river-dwelling organisms from inflowing rivers, on terrestrial organisms that became displaced as the water-level rose, and on typical still-water or sluggish-water organisms, which were extremely abundant in the newly created lake. The relative proportions of several of these food types in the diet varied depending on whether the water-level was rising or falling. Macquarie perch appear to have adapted well to the changing food supply in the lake, and have included in their diet several food types that they would not normally have encountered in their natural riverine habitat.

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