Erweiterte Suche der Leibniz Universität Hannover

Throughout development, surface moisture significantly increased skin permeance. The effect was largest during early development and decreased towards maturity. Recovery time courses revealed that following moisture treatment of young fruit for 12 days, skin permeance continued to increase until about 14 days after terminating the moisture treatment.

For non russeted genotypes, the value of P ES was significantly related to the permeance determined on the same intact fruit P fruit . Close relationships were also found between the F fruit calculated from P ES determined on the same fruit and the measured F fruit .

Determination of air gap permeances of hybrid stepping motors for calculation of motor behaviour verfasst von Cornelia Stuebig, Bernd Ponick Abstract Prediction of hybrid stepping motor performance is made possible using an analytical model based on the motor s equivalent magnetic circuit.

The contribution of lenticels differed among cultivars averaging in the cheek region 19 in Wellant and 8 in Pinova apple. The permeance of the periderm of a lenticel exceeded that of a russeted fruit skin 5.8 fold in Wellant and 5.2 fold in Pinova . Skin permeance was positively and significantly related to both lenticel density and cumulative lenticel area within a region or between regions in Wellant .

Analytischer Ansatz zur Bestimmung der Luftspaltleitwertfunktion von Schenkelpolsynchronmaschinen verfasst von Onur Misir, Frederic Dobbert, Bernd Ponick Abstract In order to predict the total magnetic field in the air gap of three phase machines analytically, the following factors have to be taken into account: the winding spatial harmonics which are excited by the winding via the mean air gap permeance as well as the parametric spat...

The MXene membrane supported on anodic aluminum oxide AAO substrate shows excellent water permeance more than 1000 L m 2 h 1 bar 1 and favorable rejection rate over 90 for molecules with sizes larger than 2.5 nm. The water permeance through the MXene membrane is much higher than that of the most membranes with similar rejections.

The method presented here considers the analytical calculation of the magnetic flux density based on the magnetomotive force and the time depending air gap permeance. Organisationseinheit en Institut für Antriebssysteme und Leistungselektronik Externe Organisation en Michigan State University Typ Paper Publikationsdatum 2016 Publikationsstatus Veröffentlicht Peer reviewed Ja ASJC Scopus Sachgebiete Elektrotechnik und Elektronik Elektr...

The objectives of our study were to 1 quantify the transpiration permeances of fruit and pedicel surfaces 2 determine the role of the fruit in pedicel transpiration and 3 identify the effects of selected factors on pedicel transpiration.

This applies particularly to synchronous machines which have considerably higher fluctuations of the air gap permeance due to the pole gap or the slot openings of the field winding than induction machines. This paper compares different approaches for calculating the contribution of a salient pole rotor to the total air gap permeance of salient pole synchronous machines by using FEM.

The modified membranes were investigated by XPS, ATR/FTIR, water contact angle, SEM and water permeance for a structural and morphological analysis. The obtained results reveal that the modified membranes with TA and cupric acetate CuII developed a thin skin layer, which showed excellent hydrophilicity with good water permeance.

Nunes, Klaus Viktor Peinemann Abstract Synthetic membranes with a high selectivity for demanding molecular separations and high permeance have a large potential for the reduction of energy consumption in separation processes. Herein, for the first time, the fabrication of an ultrathin layered macrocycle membrane for molecular separation in organic solvent nanofiltration using per 6 amino cyclodextrin as a monomer for membrane manufact...

A ZIF 7 nano filler that was synthesized in our lab was embedded into a designed polymer matrix at various loadings and the performance of the mixed matrix membranes was evaluated in terms of gas permeance and selectivity. Hybrid membranes with various loadings 20, 30 and 40 wt were developed and tested at room temperature by a custom made time lag equipment and a jump in selectivity was observed when compared with the pristine polymer.

Herein, the continuous two dimensional imine linked COF LZU1 membrane with a thickness of only 400 nm was prepared on alumina tubes by in situ solvothermal synthesis. The membrane shows excellent water permeance ca. 760 L m 2 h 1 MPa 1 and favorable rejection rates exceeding 90 for water soluble dyes larger than 1.2 nm. The water permeance through the COF LZU1 membrane is much higher than that of most membranes with similar r...

The method presented here considers the analytical calculation of the magnetic flux density based on the magnetomotive force and the time depending air gap permeance of the SMCR. Organisationseinheit en Institut für Antriebssysteme und Leistungselektronik Typ Artikel Journal Electrical Engineering Band 99 Seiten 615 624 Anzahl der Seiten 10 ISSN 0948 7921 Publikationsdatum 01.06.2017 Publikationsstatus Veröffentlicht Peer reviewed Ja ...

The method presented here considers the analytical calculation of the magnetic flux density based on the magnetomotive force M.M.F. and the time depending air gap permeance function of the SMCR. Organisationseinheit en Institut für Antriebssysteme und Leistungselektronik Typ Aufsatz in Konferenzband Seiten 306 311 Anzahl der Seiten 6 Publikationsdatum 10.11.2015 Publikationsstatus Veröffentlicht Peer reviewed Ja ASJC Scopus Sachgebiet...