@inproceedings{AhmedSchlenkhoffBung2011, author = {Ahmed, H. and Schlenkhoff, A. and Bung, Daniel Bernhard}, title = {Hydrodynamic characteristics of vertical slotted wall breakwaters}, series = {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}, booktitle = {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}, organization = {International Association for Hydraulic Engineering and Research}, isbn = {978-0-85825-868-6}, pages = {1179 -- 1186}, year = {2011}, language = {en} } @article{AhmedReisgenSchleseretal.2010, author = {Ahmed, Essam and Reisgen, Uwe and Schleser, Markus and Mokrov, Oleg}, title = {On formability of tailor laser welded blanks of DP/TRIP steel sheets}, series = {Science and technology of welding and joining}, volume = {15}, journal = {Science and technology of welding and joining}, number = {5}, publisher = {Maney}, address = {Leeds}, issn = {1743-2936}, doi = {10.1179/136217110X12731414739754}, pages = {337 -- 342}, year = {2010}, abstract = {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.}, language = {en} } @inproceedings{AhlbrinkAlexopoulosAnderssonetal.2009, author = {Ahlbrink, N. and Alexopoulos, Spiros and Andersson, J. and Belhomme, B. and Teixeira Boura, Cristiano Jos{\´e} and Gall, J. and Hirsch, T.}, title = {viCERP - the Virtual Institute of Central Receiver Power Plant}, series = {MATHMOD 2009 - 6th Vienna International Conference on Mathematical Modelling : February 11 - 13, 2009, Vienna, Austria. ARGESIM Report. No. 35}, booktitle = {MATHMOD 2009 - 6th Vienna International Conference on Mathematical Modelling : February 11 - 13, 2009, Vienna, Austria. ARGESIM Report. No. 35}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {978-3-901608-35-3}, year = {2009}, language = {en} } @misc{AhlbornGerlachIkenetal.2012, author = {Ahlborn, Kristina and Gerlach, Frank and Iken, Heiko and Sch{\"o}ning, Michael Josef and Vonau, Winfried}, title = {Miniaturisierte, potentiometrische Indikatorelektrode und Verfahren zu deren Herstellung : Offenlegungsschrift}, pages = {7 S.}, year = {2012}, language = {de} } @article{AgrafiotisMavroidisKonstandopoulosetal.2007, author = {Agrafiotis, Christos C. and Mavroidis, Ilias and Konstandopoulos, Athansios G. and Hoffschmidt, Bernhard and Stobbe, Per and Romero, Manuel and Fernandez-Quero, Valerio}, title = {Evaluation of porous silicon carbide monolithic honeycombs as volumetric receivers/collectors of concentrated solar radiation}, series = {Solar energy materials and solar cells}, volume = {Vol. 91}, journal = {Solar energy materials and solar cells}, number = {Iss. 6}, issn = {1879-3398 (E-Journal); 0927-0248 (Print)}, pages = {474 -- 488}, year = {2007}, language = {en} } @article{AggeloussisGiannakouAlbrachtetal.2010, author = {Aggeloussis, Nickos and Giannakou, Erasmia and Albracht, Kirsten and Arampatzis, Adamantios}, title = {Reproducibility of fascicle length and pennation angle of gastrocnemius medialis in human gait in vivo}, series = {Gait and Posture}, volume = {31}, journal = {Gait and Posture}, number = {1}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0966-6362}, doi = {10.1016/j.gaitpost.2009.08.249}, pages = {73 -- 77}, year = {2010}, abstract = {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.}, language = {en} } @article{AggarwalSinghSinghetal.2011, author = {Aggarwal, Prerna and Singh, Virendra and Singh, Arjun and Scherer, Ulrich W. and Singh, Tejvir and Singla, Madan L. and Srivastava, Alok}, title = {Physico-chemical transformations in swift heavy ion modified poly(ethyleneterephthalate)}, series = {Radiation Physics and Chemistry}, journal = {Radiation Physics and Chemistry}, publisher = {Pergamon Press}, address = {Oxford}, isbn = {0969-806X}, pages = {1 -- 28}, year = {2011}, language = {en} } @article{AggarwalDhimanKumaretal.2012, author = {Aggarwal, P. and Dhiman, S. and Kumar, G. and Scherer, Ulrich W. and Singla, M. L. and Srivastava, A.}, title = {Optical study of poly(ethyleneterephthalate) modified by different ionizing radiation dose}, series = {Indian Journal of Pure and Applied Physics}, volume = {50}, journal = {Indian Journal of Pure and Applied Physics}, number = {2}, issn = {0019-5596}, pages = {129 -- 132}, year = {2012}, abstract = {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.}, language = {en} } @inproceedings{AdomeitWillms1984, author = {Adomeit, G. and Willms, Herbert}, title = {Experimental investigation of the acceleration of deflagration in wake flow}, series = {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}, booktitle = {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}, editor = {Skupinski, Edwin}, publisher = {Graham \& Trotman [u.a.]}, address = {London Gaithersburg, Md.}, isbn = {0-86010-678-0}, pages = {294 -- 304}, year = {1984}, language = {en} } @techreport{AdomeitWillms1984, author = {Adomeit, G. and Willms, Herbert}, title = {Experimental investigation of the acceleration of deflagration in wake flow : final report. - (Euratom-publications-EUR ; 9593 : Nuclear science and technology)}, publisher = {Commission of the European Communities}, address = {Luxembourg}, isbn = {92-825-4699-3}, pages = {III, 119 S.}, year = {1984}, language = {en} } @techreport{AdlerHeymerRichteretal.2009, author = {Adler, J. and Heymer, H. and Richter, H. J. and Fend, Th. and Smirnova, O. and Rietbrock, P. and Petchenko, A. and Issendorff, F. v. and Steven, M. and Trimis, D. and Gonsior, Daniel and Helsper, Christoph and Hoffschmidt, Bernhard}, title = {INNOTRAP - innovative Rußfilter f{\"u}r LKW-Dieselmotoren : Abschlussbericht F{\"o}rderkennzeichen 16IN0313}, pages = {245 S. : Ill., graph. Darst.}, year = {2009}, language = {de} } @inproceedings{AdenackerGerhardsOttenetal.2021, author = {Adenacker, J. and Gerhards, Benjamin and Otten, Christian and Schleser, Markus}, title = {Laserstrahlschweißen von Aluminium-Kupfer-Werkstoffkombinationen f{\"u}r die Elektromobilit{\"a}t}, series = {DVS CONGRESS 2021}, booktitle = {DVS CONGRESS 2021}, publisher = {DVS Media GmbH}, address = {D{\"u}sseldorf}, isbn = {978-3-96144-146-4}, pages = {31 -- 38}, year = {2021}, language = {de} } @article{AdelsMonakhova2024, author = {Adels, Klaudia and Monakhova, Yulia}, title = {Low-field NMR spectroscopic study of e-cigarettes: Is determination of only nicotine and organic carrier solvents possible?}, series = {Microchemical Journal}, volume = {203}, journal = {Microchemical Journal}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1095-9149}, doi = {10.1016/j.microc.2024.110859}, pages = {9 Seiten}, year = {2024}, abstract = {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.}, language = {en} } @article{AdelsElbersDiehletal.2023, author = {Adels, Klaudia and Elbers, Gereon and Diehl, Bernd and Monakhova, Yulia}, title = {Multicomponent analysis of dietary supplements containing glucosamine and chondroitin: comparative low- and high-field NMR spectroscopic study}, series = {Analytical Sciences}, volume = {2023}, journal = {Analytical Sciences}, publisher = {Springer Verlag}, address = {Cham}, issn = {1348-2246 (Online)}, doi = {10.1007/s44211-023-00433-2}, pages = {13 Seiten}, year = {2023}, abstract = {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.}, language = {en} } @inproceedings{AdamsLosekammCzupalla2020, author = {Adams, Moritz and Losekamm, Martin J. and Czupalla, Markus}, title = {Development of the Thermal Control System for the RadMap Telescope Experiment on the International Space Station}, series = {International Conference on Environmental Systems}, booktitle = {International Conference on Environmental Systems}, pages = {1 -- 10}, year = {2020}, language = {en} } @masterthesis{Ackermann2024, type = {Bachelor Thesis}, author = {Ackermann, Vincent}, title = {Filos : Design eines Front-Ends f{\"u}r das robotergef{\"u}hrte Laser-Osteotom-System STELLA.}, publisher = {FH Aachen}, address = {Aachen}, pages = {70 Seiten}, year = {2024}, abstract = {In der Abschlussarbeit „FILOS" wurde in Zusammenarbeit mit dem Fraunhofer-Institut f{\"u}r Lasertechnik (ILT) ein Front-End f{\"u}r das laserbasierte Osteotom STELLA entwickelt. STELLA soll Kraniotomie (das Er{\"o}ffnen des Sch{\"a}dels) im wachen Zustand erm{\"o}glichen und erfordert eine benutzerfreundliche Bedienungsplattform sowie ein funktionales und {\"a}sthetisches Design. Das Ziel von „FILOS" war es, ein Geh{\"a}use zu entwerfen, das den medizinischen Anforderungen entspricht, und ein Bedienkonzept zu entwickeln, dass die Akzeptanz bei Patient:innen und Anwender:innen f{\"o}rdert. 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 zuk{\"u}nftige Operationssystem repr{\"a}sentieren und somit einen Mehrwert in der Medizin schaffen.}, language = {de} } @book{AckermannMehlPeischl1990, author = {Ackermann, Hans-Josef and Mehl, Max and Peischl, Markus}, title = {Modulares Graphik-Subsystem f{\"u}r die Echtzeitdarstellung von 3D-Anwendungen : Abschlußbericht ; Contract NT 2815-A-8 / Hans-Josef Ackermann; Max Mehl; Markus Peischl. Fachbereich Informatik, Technische Hochschule Darmstadt; Bundesministerium f{\"u}r Forschung und Technologie, Bonn}, publisher = {Techn. Hochschule}, address = {Darmstadt}, pages = {ca. 100 S.}, year = {1990}, language = {de} } @article{AckermannJaegerOsterfeldetal.1993, author = {Ackermann, Hans-Josef and J{\"a}ger, Michael and Osterfeld, Utz and Hornung, Christoph}, title = {Building a Multimedia ISDN PC / J{\"a}ger, Michael ; Osterfeld, Utz ; Ackermann, Hans-Josef ; Hornung, Christoph}, series = {Institute of Electrical and Electronics Engineers: IEEE computer graphics and applications. 13 (1993), H. 5}, journal = {Institute of Electrical and Electronics Engineers: IEEE computer graphics and applications. 13 (1993), H. 5}, isbn = {0272-1716}, pages = {24 -- 33}, year = {1993}, language = {en} } @article{Ackermann1996, author = {Ackermann, Hans-Josef}, title = {Single chip hardware support for rasterization and texture mapping}, series = {Computers \& graphics : CAG ; an international journal of applications in computer graphics. 20 (1996), H. 4}, journal = {Computers \& graphics : CAG ; an international journal of applications in computer graphics. 20 (1996), H. 4}, isbn = {0097-8493}, pages = {503 -- 514}, year = {1996}, language = {en} } @book{Ackermann1996, author = {Ackermann, Hans-Josef}, title = {Hardware-Unterst{\"u}tzung f{\"u}r effiziente Dreiecksrasterisierung und texture mapping}, publisher = {Shaker}, address = {Aachen}, isbn = {3826512081}, pages = {III, 162 S : Ill., graph. Darst.}, year = {1996}, language = {de} }