Refine
Year of publication
- 2024 (8)
- 2023 (20)
- 2022 (12)
- 2021 (25)
- 2020 (20)
- 2019 (30)
- 2018 (35)
- 2017 (25)
- 2016 (26)
- 2015 (22)
- 2014 (24)
- 2013 (29)
- 2012 (25)
- 2011 (31)
- 2010 (26)
- 2009 (27)
- 2008 (27)
- 2007 (28)
- 2006 (17)
- 2005 (15)
- 2004 (19)
- 2003 (12)
- 2002 (20)
- 2001 (20)
- 2000 (19)
- 1999 (23)
- 1998 (16)
- 1997 (13)
- 1996 (10)
- 1995 (11)
- 1994 (15)
- 1993 (9)
- 1992 (8)
- 1991 (4)
- 1990 (6)
- 1989 (5)
- 1988 (5)
- 1987 (2)
- 1986 (1)
- 1985 (6)
- 1984 (1)
- 1982 (2)
- 1981 (1)
- 1980 (4)
- 1979 (2)
- 1978 (3)
- 1976 (1)
- 1975 (1)
- 1974 (1)
Institute
- Fachbereich Elektrotechnik und Informationstechnik (712) (remove)
Has Fulltext
- no (712) (remove)
Language
- English (712) (remove)
Document Type
- Article (406)
- Conference Proceeding (235)
- Part of a Book (38)
- Book (23)
- Conference: Meeting Abstract (6)
- Patent (2)
- Conference Poster (1)
- Doctoral Thesis (1)
Keywords
- Enterprise Architecture (5)
- MINLP (5)
- Engineering optimization (4)
- Optimization (3)
- Powertrain (3)
- Technical Operations Research (3)
- Telecommunication (3)
- Competence Developing Games (2)
- Energy efficiency (2)
- Engineering education (2)
ε-Fe3N has been investigated by time-of-flight neutron diffraction (temperature range 4.2–618 K) and SQUID magnetometry (2–700 K, B≤5 T). A ferromagnetic spin structure is observed with magnetic moments oriented perpendicular to the c-axis of the hexagonal nuclear structure. The magnetic saturation moment of iron is 2.2 μB at 4.2 K from neutron diffraction and 2.0 μB from magnetic measurements and decreases in a Brillouin-like manner on heating to TC=575 K. Above 450 K an increasing but reversible disorder of the nitrogen partial structure is observed.
Purpose
To assess the feasibility of prostate ¹H MR spectroscopic imaging (MRSI) using low-power spectral-spatial (SPSP) pulses at 7T, exploiting accurate spectral selection and spatial selectivity simultaneously.
Methods
A double spin-echo sequence was equipped with SPSP refocusing pulses with a spectral selectivity of 1 ppm. Three-dimensional prostate ¹H-MRSI at 7T was performed with the SPSP-MRSI sequence using an 8-channel transmit array coil and an endorectal receive coil in three patients with prostate cancer and in one healthy subject. No additional water or lipid suppression pulses were used.
Results
Prostate ¹H-MRSI could be obtained well within specific absorption rate (SAR) limits in a clinically feasible time (10 min). Next to the common citrate signals, the prostate spectra exhibited high spermine signals concealing creatine and sometimes also choline. Residual lipid signals were observed at the edges of the prostate because of limitations in spectral and spatial selectivity.
Conclusion
It is possible to perform prostate ¹H-MRSI at 7T with a SPSP-MRSI sequence while using separate transmit and receive coils. This low-SAR MRSI concept provides the opportunity to increase spatial resolution of MRSI within reasonable scan times.
Project work and inter disciplinarity are integral parts of today's engineering work. It is therefore important to incorporate these aspects into the curriculum of academic studies of engineering. At the faculty of Electrical Engineering and Information Technology an interdisciplinary project is part of the bachelor program to address these topics. Since the summer term 2020 most courses changed to online mode during the Covid-19 crisis including the interdisciplinary projects. This online mode introduces additional challenges to the execution of the projects, both for the students as well as for the lecture. The challenges, but also the risks and chances of this kind of project courses are subject of this paper, based on five different interdisciplinary projects
The RoboCup Logistics League (RCLL) is a robotics competition in a production logistics scenario in the context of a Smart Factory. In the competition, a team of three robots needs to assemble products to fulfill various orders that are requested online during the game. This year, the Carologistics team was able to win the competition with a new approach to multi-agent coordination as well as significant changes to the robot’s perception unit and a pragmatic network setup using the cellular network instead of WiFi. In this paper, we describe the major components of our approach with a focus on the changes compared to the last physical competition in 2019.