Refine
Year of publication
- 2011 (329) (remove)
Institute
- Fachbereich Medizintechnik und Technomathematik (82)
- Fachbereich Elektrotechnik und Informationstechnik (40)
- INB - Institut für Nano- und Biotechnologien (37)
- Fachbereich Wirtschaftswissenschaften (34)
- IfB - Institut für Bioengineering (34)
- Fachbereich Energietechnik (29)
- Fachbereich Chemie und Biotechnologie (28)
- Fachbereich Bauingenieurwesen (24)
- Fachbereich Maschinenbau und Mechatronik (24)
- Fachbereich Luft- und Raumfahrttechnik (23)
Document Type
- Article (182)
- Conference Proceeding (76)
- Book (24)
- Part of a Book (22)
- Report (7)
- Patent (5)
- Conference: Meeting Abstract (3)
- Other (3)
- Doctoral Thesis (2)
- Part of a Periodical (2)
Keywords
- Aachen / Fachhochschule Aachen (3)
- Aachen University of Applied Sciences (3)
- Aktionskunst (3)
- FH Aachen (2)
- Illustration (2)
- Interaktive Kunst (2)
- Kommunikationsguerrilla (2)
- Pflanzenphysiologie (2)
- Pflanzenscanner (2)
- Stadtgestaltung (2)
- Streetart (2)
- plant scanner (2)
- Öffentlicher Raum (2)
- Aachen / Fachhochschule Aachen / Fachbereich Bauingenieurwesen (1)
- Absolvententreffen (1)
- Alfha.net (1)
- Alumni (1)
- Anastomose (1)
- Anastomosis (1)
- Angewandte Forschung (1)
- Arthosetherapie (1)
- Benutzerumfrage (1)
- Biomechanics (1)
- Biomechanik (1)
- Bioreaktor (1)
- Blutzellenlagerung (1)
- Book Project (1)
- Business Process (1)
- Customer Orientation (1)
- Dattel (1)
- Design (1)
- Diagramm (1)
- Editorial (1)
- Eisschicht (1)
- Enterprise Architecture (1)
- Fachhochschule Aachen (1)
- Finite element method (1)
- Finite-Elemente-Methode (1)
- Forschungsbericht (1)
- Gebrauchsgrafik (1)
- Gonarthrose (1)
- Graduiertentagung (1)
- Grafikdesign (1)
- Graphic Design (1)
- Harnleiter (1)
- Hemoglobin structure (1)
- High field MRI (1)
- Hämoglobin (1)
- Hämoglobinstruktur (1)
- Infografik (1)
- Information Design (1)
- Kindermöbel (1)
- Kinetische Kunst (1)
- Kleinkind (1)
- Kniegelenkarthrose (1)
- Lichtkunst (1)
- MBST (1)
- MR safety (1)
- MRI (1)
- Mack, Heinz (1)
- Magneto alert sensor (1)
- McLuhan, Marshall (1)
- Mediendesign (1)
- Meinungsäußerung (1)
- Modulsystem (1)
- Multifunktionsmöbel (1)
- Netzkunst (1)
- Organkultur (1)
- Papierkunst (1)
- Pflanzenstress (1)
- Pornographie (1)
- Produktdesign (1)
- Raumerfahrung (1)
- Red blood cell storage (1)
- Research Report (1)
- Sammelobjekt (1)
- Schwarzweißphotographie (1)
- Sitzmöbel (1)
- Sonde (1)
- Spielmöbel (1)
- Spielzeug (1)
- Strickmuster (1)
- Telecommunication Industry (1)
- Tissue Engineering (1)
- Transformation Project (1)
- Tribute (1)
- Uktrahigh field MRI (1)
- User Survey (1)
- Wissens- und Technologietransfer (1)
- Zuschauer (1)
- arthrosis therapy (1)
- avalanche (1)
- date palm tree (1)
- gonarthrosis (1)
- heliosphere (1)
- ion propulsion (1)
- low-thrust trajectory optimization (1)
- plant stress (1)
- snow (1)
- subsurface ice research (1)
- subsurface probe (1)
The importance of the availability of stored blood or blood cells, respectively, for urgent transfusion cannot be overestimated. Nowadays, blood storage becomes even more important since blood products are used for epidemiological studies, bio-technical research or banked for transfusion purposes. Thus blood samples must not only be processed, stored, and shipped to preserve their efficacy and safety, but also all parameters of storage must be recorded and reported for Quality Assurance. Therefore, blood banks and clinical research facilities are seeking more accurate, automated means for blood storage and blood processing.
Inhaltsverzeichnis: 4 Grußwort des Dekans [Prof. Dr.-Ing. Jürgen Kettern] 4 Grußwort des Sektionsleiters "Bau" des alfha.net [Dipl.-Ing. Walter Kleiker] 5 Referenten 10 Referate 10 Die Statik bleibt dynamisch ... : Beispiele der Schwingungsanfälligkeit von Brücken, Türmen und erdbebengefährdeten Gebäuden / Dipl.-Ing. Sebastian Gokus 12 Bau einer Biogasanlage / Dipl.-Ing. Michaela Schneider 16 Die neue Landmarke an der A4 / Dipl.-Ing. Franz-Josef Türck-Hövener 18 Technical Due Diligence Real Estate : Technische Immobilienbewertung zur Vorbereitung einer Immobilientransaktion - Eine Teilanalyse von Chancen und Risiken im Due Diligence Prozess / Dipl.-Ing. Architektin Ebru Baykal M.Eng. 20 Die Deutsche Botschaft Kabul wird saniert / Dipl.-Ing. Stefanie Milde 24 Abfluss- und Strukturverbesserung am Niederrhein : Ein hydraulischer Ansatz zur Vereinbarkeit von Hochwasserschutz und Strukturverbesserung / Dr.-Ing. Gesa Kutschera 26 Um- und Ausbau des Autobahnkreuzes Aachen / Dipl.-Ing. Dirk Gobbelé 30 Textilbewehrter Beton in Großprojekten am Beispiel einer Fußgängerbrücke / Dipl.-Ing. Andre Nacken 32 Kalkulation in der Bauindustrie / Dipl.-Ing. Alexander Spix 34 Phoenix-See Dortmund : Standort für die Zukunft / Dipl,-Ing. Stephan Bendel ; Dipl.-Ing. Sebastian Nyßen 38 alfha.net - Ein Verein stellt sich vor 39 Impressum
Air-sand heat exchanger
(2011)
Air-pulse corneal applanation signal curve parameters for the characterisation of keratoconus
(2011)
Absatzkanäle kaum verknüpft
(2011)
Objective:
To develop a transmit/receive radiofrequency (RF) array for magnetic resonance imaging (MRI) of the carotid arteries at 7 T. The prototype is characterized in numerical simulations and bench measurements, and the feasibility of plaque imaging at 7 T is demonstrated in first in vivo images.
Materials and Methods:
The RF phased array coil consists of 8 surface loop coils. To allow imaging of both sides of the neck, the RF array is divided into 2 coil clusters, each with 4 overlapping loop elements. For safety validation, numerical computations of the RF field distribution and the corresponding specific absorption rate were performed on the basis of a heterogeneous human body model. To validate the coil model, maps of the transmit B1+ field were compared between simulation and measurement. In vivo images of a healthy volunteer and a patient (ulcerating plaque and a 50% stenosis of the right internal carotid artery) were acquired using a 3-dimensional FLASH sequence with a high isotropic spatial resolution of 0.54 mm as well as using pulse-triggered proton density (PD)/T2-weighted turbo spin echo sequences.
Results:
Measurements of the S-parameters yielded a reflection and isolation of the coil elements of better than −18 and −13 dB, respectively. Measurements of the g-factor indicated good image quality for parallel imaging acceleration factors up to 2.4. A similar distribution and a very good match of the absolute values were found between the measured and simulated B1+ transmit RF field for the validation of the coil model. In vivo images revealed good signal excitation of both sides of the neck and a high vessel-to-background image contrast for the noncontrast-enhanced 3-dimensional FLASH sequence. Imaging at 7 T could depict the extent of stenosis, and revealed the disruption and ulcer of the plaque.
Conclusions:
This study demonstrates that 2 four-channel transmit/receive RF arrays for each side of the neck is a suitable concept for in vivo MRI of the carotid arteries at 7 Tesla. Further studies are needed to explore and exploit the full potential of 7 T high-field MRI for carotid atherosclerotic plaque imaging.
The msprop program presented in this work is capable of solving the Maxwell–Schrödinger equations for one or several laser fields propagating through a medium of quantum optical few-level systems in one spatial dimension and in time. In particular, it allows to numerically treat systems in which a laser field interacts with the medium with both its electric and magnetic component at the same time. The internal dynamics of the few-level system is modeled by a quantum optical master equation which includes coherent processes due to optical transitions driven by the laser fields as well as incoherent processes due to decay and dephasing. The propagation dynamics of the laser fields is treated in slowly varying envelope approximation resulting in a first order wave equation for each laser field envelope function. The program employs an Adams predictor formula second order in time to integrate the quantum optical master equation and a Lax–Wendroff scheme second order in space and time to evolve the wave equations for the fields. The source function in the Lax–Wendroff scheme is specifically adapted to allow taking into account the simultaneous coupling of a laser field to the polarization and the magnetization of the medium. To reduce execution time, a customized data structure is implemented and explained. In three examples the features of the program are demonstrated and the treatment of a system with a phase-dependent cross coupling of the electric and magnetic field component of a laser field is shown.