We evaluated the effect of emptying techniques a pontoon trap on mortality Atlantic salmon their spawning migration along Finnish coast northern Baltic Sea by tagging and releasing fish from commercial nets. Two methods currently used, traditional chute lifting bag, were compared. The bag has been developed primarily for minimising injuries during emptying. A custom-built Bayesian system model ...

Introduction: Facial fractures epidemiology varies with geographic region. Patients and methods: This study reports the frequency, demographic characteristics and aetiologies of facial fractures in a 5-year retrospective survey, in Burkina Faso. Results: In 349 patients, the fracture involved the mandible (44.5%), the zygomatic complex (38.9%), the maxilla (13.8%) or the naso-fronto-orbito-ethm...

In s ix 8to 1 1-year-old plantat ions of longleaf pine (Pinus palus tr i s Mill.) near Aiken, S.C., responses of understory vegetation, light, and soil watcr availability and litterfall were studied in relation to pine thinning (May 1994), herbicida1 treatment of nonpine woody vegetat ion (1995-1996), or the combined treatments (treatment responses described below are in absolute units) . Treat...

Discrete element model is used to simulate the flow of liquid-granule mixtures in an inclined channel containing a linear contraction. All the relevant particle/particle and particle/fluid interactions are included in the numerical model. The presence of the contraction induces different steady morphologies of the solid phase or the mixture depending on whether closed or open channels are used....

recently, particular attention has been paid to the stepped spillways due to the increasing effect of energy dissipation and the reduction of cavitations risks with the development of roller compacted concrete (rcc) technique. flow regimes on the spillways divide into three groups, namely skimming, jet and transition flow. compared to the numerical methods, the majority of performed studies in ...

From 1996 to 2002 the monthly litterfall in a Quercus suber forest ecosystem of Montseny (NE Spain) was recorded and its relationship to meteorological variables was statistically analysed. The average annual production (477 g m−2 yr−1) was similar to those found in other Mediterranean evergreen forests with relatively high rainfall. The main components were the leaves (55% of the total biomass...

Abstract During the recent decades, a number of overflow embankment protection systems were implemented. One design is Minimum Energy Loss (MEL) weir, developed to pass large flood events with minimum energy loss and low erosion. Several MEL weirs have successfully operated for decades in Australian catchments affected by heavy tropical sub-tropical rainfalls very flat gradients. Their historic...