Flume LES of a glued spheres layer – Detailed analysis of initial motions of a single grain

River morphodynamics and sediment transportMechanics of sediment transpor

Perylene dye@SiO 2 core–shell nanoparticles with intense fluorescence

PD/CC@SiO2 core–shell nanoparticles (PD: perylene dye, CC: cholecalciferol/vitamin D3) were prepared using a water-based injection method. Specifically, a solution of the PD (fluorescent red (FR), fluorescent orange (FO), fluorescent yellow (FY)), CC, and octyltriethoxysilane (OTES) as a silica precursor in ethanol was injected in water at 70 °C and pH 5. The core–shell nanoparticles exhibited an outer particle diameter of 29 ± 11 nm and an inner core of 12 ± 4 nm. Suspensions (up to 10 mg mL−1) were colloidally highly stable due to the negative surface charging (−40 to −50 mV). CC efficiently allowed disturbing of the π-stacking of the PD, such that, e.g., FR/CC@SiO2 nanoparticles with 10 wt% FR showed intense emission with quantum yields near unity (98%) and without any concentration quenching. In contrast to the freely-dissolved dyes, PD in the nanoparticle core did not show any photobleaching even after 20 hours of continuous UV illumination (280 nm). As proof-of-the-concept, suspensions and thin films were realised showing intense emission from red to yellow. Exemplarily, FR/CC@SiO2 core–shell nanoparticles were examined in detail, including electron microscopy, element mapping, dynamic light scattering, infrared spectroscopy, elemental analysis, UV-Vis spectroscopy, and photoluminescence spectroscopy

Numerical simulation of scour development due to submerged horizontal jet

River engineeringNumerical modelling in river engineerin

Implementation of a new Layer-Subroutine for fractional sediment transport in SISYPHE

Water Qualit

Bembidion (Peryphanes) italicum DE MONTE 1943 : Erstnachweis nördlich der Schweizer Alpen (Coleoptera, Carabidae)

Aufgrund von Genitaluntersuchungen grösserer Serien der Gattung Bembidion aus dem Gebiet des Goldauer Bergsturzes (Kanton Schwyz) konnte Bembidion (Peryphanes) italicum De Monte 1943 erstmals nördlich der Schweizer Alpen nachgewiesen werden. Die Art besiedelt in der Schweiz eher feuchte, mergelig-tonige Pionierstandorte meist in Gewässernähe. Ab einem Gesamtdeckungsgrad der Vegetationsschicht von mehr als 35% wurden die Lebensräume im Projektgebiet nicht mehr besiedelt. – Bembidion (Peryphanes) italicum De Monte, 1943 – First record north of the Swiss Alps (Coleoptera: Carabidae). Due to genital examination of larger series of species of the genus Bembidion Latreille, 1802 in the area of the Goldauer landslide (canton of Schwyz), Bembidion (Peryphanes) italicum De Monte, 1943 was detected for the first time north of the Swiss Alps. In Switzerland this species colonizes rather humid, marly-clay pioneer locations in proximity of bodies of water. Habitats exceeding 35% coverage of the vegetation layer were not populated within the project area

One- and three-dimensional modeling of surge generated during operation of the hydropower plants Mühlbach and Maiermühle in Landsberg on the Lech River

River hydrodynamicsInteraction with structure