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See detail0.1 µm T-gate Al-free InP/InGaAs/InP pHEMTs for W-Band Applications Using a Nitrogen Carrier for LP-MOCVD Growth
Schimpf, K.; Sommer, M.; Horstmann, M. et al

in IEEE Electron Device Letters (1997), 18

We report on the dc and RF performance of HEMT’s based on the Al-free material system InP/InGaAs/InP. These structures were grown by LP-MOCVD using a nitrogen carrier. The influence of gate length and ... [more ▼]

We report on the dc and RF performance of HEMT’s based on the Al-free material system InP/InGaAs/InP. These structures were grown by LP-MOCVD using a nitrogen carrier. The influence of gate length and channel composition on the performance of these devices is investigated.We demonstrate that optimum dc and RF performance using highly strained channels can be obtained only if additional composite channels are grown. The cutoff frequencies fT =160 GHz and fmax=260 GHz for a 0.1- um T-gate device indicate the suitability of our devices for W-Band applications. [less ▲]

Detailed reference viewed: 193 (9 UL)
See detail0.2µm T-gate InP/InGaAs/InP pHEMT with an InGaP Diffusion Barrier Layer Grown By LP-MOCVD Using an N2-carrier
Schimpf, K.; Hollfelder, M.; Horstmann, M. et al

in Proceedings of the 26th European Solid State Devices Research Conference, Bologna, Italy, 1996 (1996)

Detailed reference viewed: 136 (0 UL)
See detail0.2µm T-gate InP/InGaAs/InP pHEMT with InGaP Diffusion Barrier Layer Grown by LP-MOCVD using an N2-Carrier
Schimpf, K.; Hollfelder, M.; Horstmann, M. et al

in Proceedings of the 8th International Conference on InP and Related Compounds, Schwäbisch Gmünd, Germany (1996)

Detailed reference viewed: 111 (5 UL)
See detailDer 1. Mai im Tageblatt
Caregari, Laure UL

Article for general public (2013)

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See detail1.8% de la population vit dans un ménage collectif
Heinz, Andreas UL; Peltier, François; Thill, Germaine et al

E-print/Working paper (2013)

On 1st February 2011, 1.8% of the population of the Grand Duchy were in an institutional household (9073 persons). Among those persons, we find mainly people living in old people’s home (56.1% of ... [more ▼]

On 1st February 2011, 1.8% of the population of the Grand Duchy were in an institutional household (9073 persons). Among those persons, we find mainly people living in old people’s home (56.1% of collective households), then people living in home for adults (10.4%), children living in home for child (5.8%), military living in barracks (5.5%) and those in prison (5.0%). If everyone may need at a time in his life to stay in a collective household, two age’s categories are particularly relevant: the elderly and young adults. [less ▲]

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See detail100 ans de politique pragmatique
Sneessens, Henri UL

Article for general public (2013)

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See detail100 Joer fräi Gewerkschaften. Contributions à l'histoire du mouvement syndical luxembourgeois
Scuto, Denis UL; Krier, Frédéric; Sauer, Arnaud et al

Book published by Editions Le Phare/OGBL (2016)

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See detail100 Joer Jeunesse Esch. 1907-2007
Scuto, Denis UL; Hausemer, Georges

Book published by Editions Guy Binsfeld (2007)

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See detail100 Year Prandtl’s Wedge - Intermediate report
Van Baars, Stefan UL

Report (2016)

The biggest problem for a shallow foundation, just as any other type of foundation, is a failure due to an overestimation of the bearing capacity. This means that the correct prediction of the bearing ... [more ▼]

The biggest problem for a shallow foundation, just as any other type of foundation, is a failure due to an overestimation of the bearing capacity. This means that the correct prediction of the bearing capacity of the foundation is often the most important part of the design of a civil structure. That is why the publication of Prandtl in 1920 about the hardness of a plastic body, was a major step in solving the bearing capacity of shallow foundations, although it is well possible that he never realised this, because his solution was not made for civil engineering purposes, but for mechanical purposes. Over the last 100 year, a lot of extensions have been made, for example with inclination factors and shape factors, and many laboratory experiments have been done and also many numerical calculations have been made. Some even try to extrapolate the failure mechanism for shallow foundations to the failure mechanism around the tip of a pile. All this scientific work leads back to the first publication made by Ludwig Prandtl in 1920. This intermediuate report “100 Year Prandtl’s wedge” has been made for all those who are interested in these fundamentals of foundation engineering and their history. [less ▲]

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See detailThe 10th KWMS international conference
Yoo, Hwajong UL

Presentation (2013, June 20)

We discussed level-raising method for residually reducible Galois representations.

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See detail11,8-100% Rural Renewable Energy and Power Supply and its Influence on the Luxembourgish Power System
Norta, David Peter Benjamin UL; Winkler, Christoph; Allelein, Hans-Josef et al

in Energy Procedia (2015), 73

Currently, the majority of countries tries to reduce their dependency on fossil fuels by the introduction of renewable resources in their energy systems. In the following the relatively small ... [more ▼]

Currently, the majority of countries tries to reduce their dependency on fossil fuels by the introduction of renewable resources in their energy systems. In the following the relatively small Luxembourgish electricity system is analysed (0.55 Mio Inhabitants). Current power-system-models mainly focus on larger systems, due to the unavailability of specific consumption-data. Prices and effects on the Luxembourgish power system of different supply scenarios for rural-private households are analysed. A linear optimisation for the minimum-cost of the power-supply of a village with the following renewable energy resources: wind- (max.100 kW), solar-PV- and hydrokinetic-power is made. The electricity-demand scales with the number of inhabitants and agricultural-consumers. The wind-power-potential differs with the location of the village. The solar-radiation is assumed to be the equal over the country, due to the small size of approximately 80 by 50 km. The hydrokinetic turbines complete the supply where a village is located close to a river. The minimum cost of the specific village power-supply is the result of the optimization. The installation- and maintenance-cost of each renewable technology are considered. The whole number of a rural Luxembourgish model villages private households is considered and their electricity contribution to the system is estimated for different renewable energy supply scenarios, namely from 20% to 100% renewable-energy-scenarios. For each scenario the power exchanged from the village to the grid is calculated in 15-min-steps for 9-years, the amount differs widely with the number of applied generation technologies. Due to the high share of imported electricity of about 80% in the recent years, every consideration of national power generation does not harm the supply security. Luxembourg is a good model country to analyse the high share of distributed, renewable generators, due to its structure of rural and civic regions and their effects on a central European region with a high electricity-consumption. [less ▲]

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See detail11,8-100% Rural Renewable Energy and Power Supply and its Influence on the Luxembourgish Power System
Norta, David Peter Benjamin UL; Winkler, Christoph; Sachau, Jürgen UL et al

Poster (2015, March 10)

Introduction; Currently, the majority of countries tries to reduce their dependency on fossil fuels by the introduction of renewable resources in their energy systems. In the following the relatively ... [more ▼]

Introduction; Currently, the majority of countries tries to reduce their dependency on fossil fuels by the introduction of renewable resources in their energy systems. In the following the relatively small Luxembourgish electricity system is analysed (0.55 Mio Inhabitants). Current power-system-models mainly focus on larger systems, due to the unavailability of specific consumption-data. Prices and effects on the Luxembourgish power system of different supply scenarios for rural-private households are analysed. Methodology; A linear optimisation for the minimum-cost of the power-supply of all villages with the following renewable energy resources: wind- (max.100kW), solar-PV- and hydrokinetic-power is made. The electricity-demand scales with the number of inhabitants and agricultural-consumers. The wind-power-potential differs with the location of the village. The solar-radiation is assumed to be the equal over the country, due to the small size of approximately 80 by 50 km. The hydrokinetic turbines complete the supply where a village is located close to a river. Results; The minimum cost of the specific village power-supply is the result of the optimization. The installation- and maintenance-cost of each renewable technology are considered. The whole number of rural Luxembourgish private households is considered and their power contribution to the system is estimated for different renewable energy supply scenarios, namely from 11,8% to 100% renewable-energy-scenarios. For each scenario the power exchanged from the village to the grid is calculated in 15-min-steps for 9-years, the amount differs widely with the amount of applied technologies. Discussion; Due to the high share of imported electricity of about 80% in the recent years, every consideration of national power generation does not harm the supply security. Conclusion; Luxembourg is a good model country to analyse the high share of distributed, renewable generators, due to its structure of rural and civic regions and their effects on a central European region with a high electricity consumption. [less ▲]

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See detail11. Kongress der Fachgruppe Gesundheitspsychologie, Abstractband
Vögele, Claus UL

Book published by University of Luxembourg (2013)

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See detail11th. World Congress on Computational Mechanics (WCCM XI)
Lee, Chang-Kye; Mihai, L. Angela; Kerfriden, Pierre et al

Scientific Conference (2014, July 23)

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See detail12th FIEP European Congress 2017
Bund, Andreas UL

Diverse speeches and writings (2016)

Congress title: “Changes in Childhood and Adolescence: Current Challenges for Physical Education”

Detailed reference viewed: 109 (4 UL)
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See detail13.3% efficient solution deposited Cu(In,Ga)Se 2 solar cells processed with different sodium salt sources
Berner, Ulrich; Colombara, Diego UL; De Wild, Jessica UL et al

in Progress in Photovoltaics Research and Applications (2015)

Detailed reference viewed: 113 (15 UL)
Peer Reviewed
See detail14-3-3 protein is a component of Lewy bodies in Parkinson's disease-mutation analysis and association studies of 14-3-3 eta.
Ubl, Andreas; Berg, Daniela; Holzmann, Carsten et al

in Molecular Brain Research (2002), 108(1-2), 33-9

Mutations in alpha-synuclein have been identified in some rare families with autosomal dominant Parkinson's disease (PD). The synuclein gene family shares physical and functional homology with 14-3-3 ... [more ▼]

Mutations in alpha-synuclein have been identified in some rare families with autosomal dominant Parkinson's disease (PD). The synuclein gene family shares physical and functional homology with 14-3-3 proteins and binds to 14-3-3 proteins and to its ligands. We therefore investigated whether 14-3-3 proteins are also involved in the pathogenesis of PD. Here we demonstrate that 14-3-3 proteins are colocalized with Lewy bodies in PD. We investigated the 14-3-3 eta (YWHAH) gene by mutation analysis and association studies as it maps to human chromosome 22q12.1-q13.1, a region which has been recently implicated in PD and carried out immunohistochemical studies of Lewy bodies with two different 14-3-3 eta antibodies. In 358 sporadic and familial PD patients, disease causing mutations were not identified. Furthermore, association studies with intragenic polymorphisms do not provide evidence for an involvement of 14-3-3 eta in the pathogenesis of PD. In accordance with these findings, there was no staining of substantia nigra Lewy bodies with antibodies specific for the 14-3-3 eta subunit. [less ▲]

Detailed reference viewed: 93 (2 UL)