TY  - CHAP
A1  - Ahmed, H.
A1  - Schlenkhoff, A.
A1  - Bung, Daniel Bernhard
T1  - Hydrodynamic characteristics of vertical slotted wall breakwaters
T2  - Balance and uncertainty - water in a changing world :  proceedings of the 34th IAHR world congress ; 33rd Hydrology and Water Resources Symposium ; 10th Conference on Hydraulics in Water Engineering ; 26 June - 1 July 2011, Brisbane, Australia
Y1  - 2011
SN  - 978-0-85825-868-6
SP  - 1179
EP  - 1186
ER  - 
TY  - JOUR
A1  - Ahmed, Essam
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Mokrov, Oleg
T1  - On formability of tailor laser welded blanks of DP/TRIP steel sheets
JF  - Science and technology of welding and joining
N2  - This paper aims to evaluate the formability of tailor welded blanks of dual phase (DP600)/transformation induced plasticity (TRIP700) steel sheets. In this work, bead on plate butt joints of 2·5 mm DP600 and 1·2 mm TRIP700 steel sheets were performed using CO2 laser beam welding. Microhardness measurements and transverse tensile testing were carried out to characterise the welds. The formability of base metals and welds were investigated by standard Erichsen test. In a perpendicular tensile test to the weld line, all specimens were fractured at the TRIP base metal, and the strengths were somewhat higher than those of base metal. There was a significant reduction in formability caused by welding of the DP600/TRIP700 steel sheets, and the formability increased with increasing welding speed.
Y1  - 2010
U6  - https://doi.org/10.1179/136217110X12731414739754
SN  - 1743-2936
VL  - 15
IS  - 5
SP  - 337
EP  - 342
PB  - Maney
CY  - Leeds
ER  - 
TY  - CHAP
A1  - Ahlbrink, N.
A1  - Alexopoulos, Spiros
A1  - Andersson, J.
A1  - Belhomme, B.
A1  - Teixeira Boura, Cristiano José
A1  - Gall, J.
A1  - Hirsch, T.
T1  - viCERP - the Virtual Institute of Central Receiver Power Plant
T2  - MATHMOD 2009 - 6th Vienna International Conference on Mathematical Modelling : February 11 - 13, 2009, Vienna, Austria. ARGESIM Report. No. 35
Y1  - 2009
SN  - 978-3-901608-35-3
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - PAT
A1  - Ahlborn, Kristina
A1  - Gerlach, Frank
A1  - Iken, Heiko
A1  - Schöning, Michael Josef
A1  - Vonau, Winfried
T1  - Miniaturisierte, potentiometrische Indikatorelektrode und Verfahren zu deren Herstellung : Offenlegungsschrift
Y1  - 2012
ER  - 
TY  - JOUR
A1  - Agrafiotis, Christos C.
A1  - Mavroidis, Ilias
A1  - Konstandopoulos, Athansios G.
A1  - Hoffschmidt, Bernhard
A1  - Stobbe, Per
A1  - Romero, Manuel
A1  - Fernandez-Quero, Valerio
T1  - Evaluation of porous silicon carbide monolithic honeycombs as volumetric receivers/collectors of concentrated solar radiation
JF  - Solar energy materials and solar cells
Y1  - 2007
SN  - 1879-3398 (E-Journal); 0927-0248 (Print)
VL  - Vol. 91
IS  - Iss. 6
SP  - 474
EP  - 488
ER  - 
TY  - JOUR
A1  - Aggeloussis, Nickos
A1  - Giannakou, Erasmia
A1  - Albracht, Kirsten
A1  - Arampatzis, Adamantios
T1  - Reproducibility of fascicle length and pennation angle of gastrocnemius medialis in human gait in vivo
JF  - Gait and Posture
N2  - The purpose of the current study was to examine the reproducibility of fascicle length and pennation angle of gastrocnemius medialis while human walking. To the best of our knowledge, this is the first study of the reproducibility of fascicle length and pennation angle of gastrocnemius medialis in vivo during human gait. Twelve males performed 10 gait trials on a treadmill, in 2 separate days. B-mode ultrasonography, with the ultrasound probe firmly adjusted in the transverse and frontal planes using a special cast, was used to measure the fascicle length and the pennation angle of the gastrocnemius medialis (GM). A Vicon 624 system with three cameras operating at 120 Hz was also used to record the ankle and knee joint angles. The results showed that measurements of fascicle length and pennation angle showed high reproducibility during the gait cycle, both within the same day and between different days. Moreover, the root mean square differences between the repeated waveforms of both variables were very small, compared with their ranges (fascicle length: RMS = ∼3 mm, range: 38–63 mm; pennation angle: RMS = ∼1.5°, range: 22–32°). However, their reproducibility was lower compared to the joint angles. It was found that representative data have to be derived by a wide number of gait trials (fascicle length ∼six trials, pennation angle more than 10 trials), to assure the reliability of the fascicle length and pennation angle in human gait.
Y1  - 2010
U6  - https://doi.org/10.1016/j.gaitpost.2009.08.249
SN  - 0966-6362
VL  - 31
IS  - 1
SP  - 73
EP  - 77
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Aggarwal, Prerna
A1  - Singh, Virendra
A1  - Singh, Arjun
A1  - Scherer, Ulrich W.
A1  - Singh, Tejvir
A1  - Singla, Madan L.
A1  - Srivastava, Alok
T1  - Physico-chemical transformations in swift heavy ion modified poly(ethyleneterephthalate)
JF  - Radiation Physics and Chemistry
Y1  - 2011
SN  - 0969-806X
N1  - In Press, Accepted Manuscript
SP  - 1
EP  - 28
PB  - Pergamon Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Aggarwal, P.
A1  - Dhiman, S.
A1  - Kumar, G.
A1  - Scherer, Ulrich W.
A1  - Singla, M. L.
A1  - Srivastava, A.
T1  - Optical study of poly(ethyleneterephthalate) modified by different ionizing radiation dose
JF  - Indian Journal of Pure and Applied Physics
N2  - Thin films of poly(ethyleneterephthalate) [PET]were exposed to radiation dose ranging from 10 to 30 kGy by using gamma rays in the range 12.8-177.8 MGy using swift light ions of hydrogen. There was no effect of the radiation dose on the optical behaviour of PET as a result of exposure to radiation dose up to 30 kGy brought about by gamma rays but a significant decrease in the optical band gap values was observed when PET was exposed to swift light ions of hydrogen. The data obtained are discussed in terms of optical studies carried out on PET using swift heavy ions.
Y1  - 2012
SN  - 0019-5596
VL  - 50
IS  - 2
SP  - 129
EP  - 132
ER  - 
TY  - CHAP
A1  - Adomeit, G.
A1  - Willms, Herbert
ED  - Skupinski, Edwin
T1  - Experimental investigation of the acceleration of deflagration in wake flow
T2  - Safety of thermal water reactors : proceedings of a Seminar on the Results of the European Communities’ Indirect Action Research Programme on Safety of Thermal Water Reactors, held in Brussels, 1–3 October 1984 / Commission of the European Communities
Y1  - 1984
SN  - 0-86010-678-0
SN  - 978-94-009-4972-0 (Online-Nachdr. vom Springer-Verl.)
N1  - Forschungsvorhaben Nr. 024 SRD
SP  - 294
EP  - 304
PB  - Graham & Trotman [u.a.]
CY  - London Gaithersburg, Md.
ER  - 
TY  - RPRT
A1  - Adomeit, G.
A1  - Willms, Herbert
T1  - Experimental investigation of the acceleration of deflagration in wake flow : final report. - (Euratom-publications-EUR ; 9593 : Nuclear science and technology)
Y1  - 1984
SN  - 92-825-4699-3
PB  - Commission of the European Communities
CY  - Luxembourg
ER  - 
TY  - RPRT
A1  - Adler, J.
A1  - Heymer, H.
A1  - Richter, H. J.
A1  - Fend, Th.
A1  - Smirnova, O.
A1  - Rietbrock, P.
A1  - Petchenko, A.
A1  - Issendorff, F. v.
A1  - Steven, M.
A1  - Trimis, D.
A1  - Gonsior, Daniel
A1  - Helsper, Christoph
A1  - Hoffschmidt, Bernhard
T1  - INNOTRAP - innovative Rußfilter für LKW-Dieselmotoren : Abschlussbericht Förderkennzeichen 16IN0313
Y1  - 2009
ER  - 
TY  - CHAP
A1  - Adenacker, J.
A1  - Gerhards, Benjamin
A1  - Otten, Christian
A1  - Schleser, Markus
T1  - Laserstrahlschweißen von Aluminium-Kupfer-Werkstoffkombinationen für die Elektromobilität
T2  - DVS CONGRESS 2021
Y1  - 2021
SN  - 978-3-96144-146-4
N1  - DVS CONGRESS 2021, 14. – 17. September 2021, Essen. Große Schweißtechnische Tagung 2021, DVS CAMPUS 2021. DVS Berichte, Band: 371
SP  - 31
EP  - 38
PB  - DVS Media GmbH
CY  - Düsseldorf
ER  - 
TY  - JOUR
A1  - Adels, Klaudia
A1  - Monakhova, Yulia
T1  - Low-field NMR spectroscopic study of e-cigarettes: Is determination of only nicotine and organic carrier solvents possible?
JF  - Microchemical Journal
N2  - Electronic cigarettes (e-cigarettes) have become popular worldwide with the market growing exponentially in some countries. The absence of product standards and safety regulations requires urgent development of analytical methodologies for the holistic control of the growing diversity of such products. An approach based on low-field nuclear magnetic resonance (LF-NMR) at 80 MHz is presented for the simultaneous determination of key parameters: carrier solvents (vegetable glycerine (VG), propylene glycol (PG) and water), total nicotine as well as free-base nicotine fraction. Moreover, qualitative and quantitative determination of fourteen weak organic acids deliberately added to enhance sensory characteristics of e-cigarettes was possible. In most cases these parameters can be rapidly and conveniently determined without using any sample manipulation such as dilution, extraction or derivatization steps. The method was applied for 37 authentic e-cigarettes samples. In particular, eight different organic acids with the content up to 56 mg/mL were detected. Due to its simplicity, the method can be used in routine regulatory control as well as to study release behaviour of nicotine and other e-cigarettes constituents in different products.
KW  - Electronic cigarettes
KW  - Low field NMR
KW  - Carrier solvents
KW  - Free-base nicotine
KW  - Weak organic acids
Y1  - 2024
U6  - https://doi.org/10.1016/j.microc.2024.110859
SN  - 1095-9149
N1  - Corresponding author: Yulia Monakhova
VL  - 203
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Adels, Klaudia
A1  - Elbers, Gereon
A1  - Diehl, Bernd
A1  - Monakhova, Yulia
T1  - Multicomponent analysis of dietary supplements containing glucosamine and chondroitin: comparative low- and high-field NMR spectroscopic study
JF  - Analytical Sciences
N2  - With the prevalence of glucosamine- and chondroitin-containing dietary supplements for people with osteoarthritis in the marketplace, it is important to have an accurate and reproducible analytical method for the quantitation of these compounds in finished products. NMR spectroscopic method based both on low- (80 MHz) and high- (500–600 MHz) field NMR instrumentation was established, compared and validated for the determination of chondroitin sulfate and glucosamine in dietary supplements. The proposed method was applied for analysis of 20 different dietary supplements. In the majority of cases, quantification results obtained on the low-field NMR spectrometer are similar to those obtained with high-field 500–600 MHz NMR devices. Validation results in terms of accuracy, precision, reproducibility, limit of detection and recovery demonstrated that the developed method is fit for purpose for the marketed products. The NMR method was extended to the analysis of methylsulfonylmethane, adulterant maltodextrin, acetate and inorganic ions. Low-field NMR can be a quicker and cheaper alternative to more expensive high-field NMR measurements for quality control of the investigated dietary supplements. High-field NMR instrumentation can be more favorable for samples with complex composition due to better resolution, simultaneously giving the possibility of analysis of inorganic species such as potassium and chloride.
KW  - Glucosamine
KW  - Chondroitin sulfate
KW  - Polysaccharides
KW  - Dietary supplements
KW  - High-field NMR
Y1  - 2023
U6  - https://doi.org/10.1007/s44211-023-00433-2
SN  - 1348-2246 (Online)
SN  - 0910-6340 (Print)
N1  - Corresponding author: Yulia Monakhova
VL  - 2023
PB  - Springer Verlag
CY  - Cham
ER  - 
TY  - CHAP
A1  - Adams, Moritz
A1  - Losekamm, Martin J.
A1  - Czupalla, Markus
T1  - Development of the Thermal Control System for the RadMap Telescope Experiment on the International Space Station
T2  - International Conference on Environmental Systems
Y1  - 2020
N1  - 2020 International Conference on Environmental Systems, 12. Juli 2020 – 16. Juli 2020, Lissabon
SP  - 1
EP  - 10
ER  - 
TY  - THES
A1  - Ackermann, Vincent
T1  - Filos : Design eines Front-Ends für das robotergeführte Laser-Osteotom-System STELLA.
N2  - In der Abschlussarbeit „FILOS“ wurde in Zusammenarbeit mit dem Fraunhofer-Institut für Lasertechnik (ILT) ein Front-End für das laserbasierte Osteotom STELLA entwickelt. STELLA soll Kraniotomie (das Eröffnen des Schädels) im wachen Zustand ermöglichen und erfordert eine benutzerfreundliche Bedienungsplattform sowie ein funktionales und ästhetisches Design. Das Ziel von „FILOS“ war es, ein Gehäuse zu entwerfen, das den medizinischen Anforderungen entspricht, und ein Bedienkonzept zu entwickeln, dass die Akzeptanz bei Patient:innen und Anwender:innen fördert. Durch Expert:innen-Interviews mit Neurochirurg:innen und enge Zusammenarbeit mit dem ILT wurde ein durchdachtes Design entwickelt. Dieses soll den Anforderungen der Anwender:innen gerecht werden, das zukünftige Operationssystem repräsentieren und somit einen Mehrwert in der Medizin schaffen.
KW  - Wachoperation
KW  - Laserchirurgie
KW  - Medizintechnik
KW  - Cobot
KW  - Industrial Design
Y1  - 2024
N1  - Für diese Arbeit steht kein Volltext zur Verfügung.
PB  - FH Aachen
CY  - Aachen
ER  - 
TY  - BOOK
A1  - Ackermann, Hans-Josef
A1  - Mehl, Max
A1  - Peischl, Markus
T1  - Modulares Graphik-Subsystem für die Echtzeitdarstellung von 3D-Anwendungen : Abschlußbericht ; Contract NT 2815-A-8 / Hans-Josef Ackermann; Max Mehl; Markus Peischl. Fachbereich Informatik, Technische Hochschule Darmstadt; Bundesministerium für Forschung und Technologie, Bonn
Y1  - 1990
N1  - Forschungs- und Arbeitsberichte des Fachgebietes Graphisch-Interaktive Systeme, Technische Hochschule Darmstadt ; 90-4
PB  - Techn. Hochschule
CY  - Darmstadt
ER  - 
TY  - JOUR
A1  - Ackermann, Hans-Josef
A1  - Jäger, Michael
A1  - Osterfeld, Utz
A1  - Hornung, Christoph
T1  - Building a Multimedia ISDN PC / Jäger, Michael ; Osterfeld, Utz ; Ackermann,  Hans-Josef ; Hornung, Christoph
JF  - Institute of Electrical and Electronics Engineers: IEEE computer graphics and applications. 13 (1993), H. 5
Y1  - 1993
SN  - 0272-1716
SP  - 24
EP  - 33
ER  - 
TY  - JOUR
A1  - Ackermann, Hans-Josef
T1  - Single chip hardware support for rasterization and texture mapping
JF  - Computers & graphics : CAG ; an international journal of applications in computer graphics. 20 (1996), H. 4
Y1  - 1996
SN  - 0097-8493
SP  - 503
EP  - 514
ER  - 
TY  - BOOK
A1  - Ackermann, Hans-Josef
T1  - Hardware-Unterstützung für effiziente Dreiecksrasterisierung und texture mapping
Y1  - 1996
SN  - 3826512081
N1  - zugl.: Techn. Hochsch., Diss.--Darmstadt, 1995.
PB  - Shaker
CY  - Aachen
ER  -