@article{BalakirskiKotliarPaulyetal.2018, author = {Balakirski, Galina and Kotliar, Konstantin and Pauly, Karolin J. and Krings, Laura K. and R{\"u}bben, Albert and Baron, Jens M. and Schmitt, Laurenz}, title = {Surgical Site Infections After Dermatologic Surgery in Immunocompromised Patients: A Single-Center Experience}, series = {Dermatologic Surgery}, journal = {Dermatologic Surgery}, number = {44 (12)}, publisher = {Wolters Kluwer}, doi = {10.1097/DSS.0000000000001615}, pages = {1525 -- 1536}, year = {2018}, abstract = {BACKGROUND Immunosuppression is often considered as an indication for antibiotic prophylaxis to prevent surgical site infections (SSI) while performing skin surgery. However, the data on the risk of developing SSI after dermatologic surgery in immunosuppressed patients are limited. PATIENTS AND METHODS All patients of the Department of Dermatology and Allergology at the University Hospital of RWTH Aachen in Aachen, Germany, who underwent hospitalization for a dermatologic surgery between June 2016 and January 2017 (6 months), were followed up after surgery until completion of the wound healing process. The follow-up addressed the occurrence of SSI and the need for systemic antibiotics after the operative procedure. Immunocompromised patients were compared with immunocompetent patients. The investigation was conducted as a retrospective analysis of patient records. RESULTS The authors performed 284 dermatologic surgeries in 177 patients. Nineteen percent (54/284) of the skin surgery was performed on immunocompromised patients. The most common indications for surgical treatment were nonmelanoma skin cancer and malignant melanomas. Surgical site infections occurred in 6.7\% (19/284) of the cases. In 95\% (18/19), systemic antibiotic treatment was needed. Twenty-one percent of all SSI (4/19) were seen in immunosuppressed patients. CONCLUSION According to the authors' data, immunosuppression does not represent a significant risk factor for SSI after dermatologic surgery. However, larger prospective studies are needed to make specific recommendations on the use of antibiotic prophylaxis while performing skin surgery in these patients. The available data on complications after dermatologic surgery have improved over the past years. Particularly, additional risk factors have been identified for surgical site infections (SSI). Purulent surgical sites, older age, involvement of head, neck, and acral regions, and also the involvement of less experienced surgeons have been reported to increase the risk of the SSI after dermatologic surgeries.1 In general, the incidence of SSI after skin surgery is considered to be low.1,2 However, antibiotics in dermatologic surgeries, especially in the perioperative setting, seem to be overused,3,4 particularly regarding developing antibiotic resistances and side effects. Immunosuppression has been recommended to be taken into consideration as an additional indication for antibiotic prophylaxis to prevent SSI after skin surgery in special cases.5,6 However, these recommendations do not specify the exact dermatologic surgeries, and were not specifically developed for dermatologic surgery patients and treatments, but adopted from other surgical fields.6 According to the survey conducted on American College of Mohs Surgery members in 2012, 13\% to 29\% of the surgeons administered antibiotic prophylaxis to immunocompromised patients to prevent SSI while performing dermatologic surgery on noninfected skin,3 although this was not recommended by Journal of the American Academy of Dermatology Advisory Statement. Indeed, the data on the risk of developing SSI after dermatologic surgery in immunosuppressed patients are limited. However, it is possible that due to the insufficient evidence on the risk of SSI occurrence in this patient group, dermatologic surgeons tend to overuse perioperative antibiotic prophylaxis. To make specific recommendations on the use of antibiotic prophylaxis in immunosuppressed patients in the field of skin surgery, more information about the incidence of SSI after dermatologic surgery in these patients is needed. The aim of this study was to fill this data gap by investigating whether there is an increased risk of SSI after skin surgery in immunocompromised patients compared with immunocompetent patients.}, language = {en} } @article{BaierHebel2001, author = {Baier, Reinhold and Hebel, Christoph}, title = {Parkraumbewirtschaftung und Modal-Split - die relativierte Stellschraube}, series = {Strassenverkehrstechnik . 45 (2001), H. 4}, journal = {Strassenverkehrstechnik . 45 (2001), H. 4}, isbn = {0039-2219}, pages = {165 -- 167}, year = {2001}, language = {de} } @article{BaierMottaghyZiegleretal.2008, author = {Baier, C. and Mottaghy, Darius and Ziegler, M. and Rath, V.}, title = {Numerische Simulation des Gefrierprozesses bei der Baugrundvereisung im durchstr{\"o}mten Untergrund}, series = {Bauingenieur}, volume = {83}, journal = {Bauingenieur}, number = {2}, issn = {0005-6650}, pages = {49 -- 60}, year = {2008}, language = {de} } @article{BackesAdamGottschaldetal.2012, author = {Backes, Klaus and Adam, Mario and Gottschald, Beng Jonas and Faber, Christian and Henneb{\"o}hl, Friedrich-Gregor and Lanz, Marco and Anthrakidis, Anette}, title = {KWKK-Anlagen im Feldtest. Optimaler Betrieb durch Verbesserungen bei Regelung und Hydraulik}, series = {Die K{\"a}lte- und Klimatechnik}, journal = {Die K{\"a}lte- und Klimatechnik}, number = {2}, publisher = {Gentner}, address = {Stuttgart}, issn = {0343-2246}, year = {2012}, language = {de} } @article{BabilonWilbringTappertetal.2018, author = {Babilon, Katharina and Wilbring, Daniela and Tappert, Tim and Pfaff, Raphael and Enning, Manfred}, title = {Schienenfahrzeugtechnik hands on - FH Aachen IMechE Railway Challenge}, series = {Ingenieurspiegel}, journal = {Ingenieurspiegel}, number = {2}, publisher = {Public Verlag}, address = {Bingen}, issn = {1868-5919}, pages = {20 -- 22}, year = {2018}, language = {de} } @article{BaatzWiendahl1971, author = {Baatz, Udo and Wiendahl, Hans Peter}, title = {Methoden des Konstruierens - {\"U}bersicht {\"u}ber Ger{\"a}te, Methoden und Hilfsmittel zur Beseitigung des Engpasses Konstruktion, Teil 1}, series = {Grundlagen der Landtechnik}, volume = {21}, journal = {Grundlagen der Landtechnik}, number = {2}, publisher = {VDI-Verlag}, address = {D{\"u}sseldorf}, isbn = {0017-4920}, pages = {35 -- 38}, year = {1971}, abstract = {Der Konstruktionsbereich ist zu einem neuen Schwerpunkt der allgemeinen Rationalisierungsbem{\"u}hungen geworden. Zunehmend f{\"u}hrt man organisatorische Hilfsmittel, technische Hilfsmittel (EDVA) und neue Konstruktionsmethoden in der Konstruktion ein. Der vorliegende Beitrag analysiert zun{\"a}chst die Ursachen dieser Entwicklung und zeigt im weiteren einige heute bereits eingesetzte Hilfsmittel an Hand von Beispielen auf und diskutiert die Anwendungsm{\"o}glichkeiten.}, language = {de} } @article{BaatzWiendahl1971, author = {Baatz, Udo and Wiendahl, Hans Peter}, title = {Methoden des Konstruierens - {\"U}bersicht {\"u}ber Ger{\"a}te, Methoden und Hilfsmittel zur Beseitigung des Engpasses Konstruktion, Teil 2}, series = {Grundlagen der Landtechnik}, volume = {212}, journal = {Grundlagen der Landtechnik}, number = {3}, publisher = {VDI-Verlag}, address = {D{\"u}sseldorf}, isbn = {0017-4920}, pages = {77 -- 80}, year = {1971}, abstract = {Der Konstruktionsbereich ist zu einem neuen Schwerpunkt der allgemeinen Rationalisierungsbem{\"u}hungen geworden. Zunehmend f{\"u}hrt man organisatorische Hilfsmittel, technische Hilfsmittel (EDVA) und neue Konstruktionsmethoden in der Konstruktion ein. Der vorliegende Beitrag analysiert zun{\"a}chst die Ursachen dieser Entwicklung und zeigt im weiteren einige heute bereits eingesetzte Hilfsmittel an Hand von Beispielen auf und diskutiert die Anwendungsm{\"o}glichkeiten.}, language = {de} } @article{BaatzOpitzWiendahl1970, author = {Baatz, Udo and Opitz, Herwart and Wiendahl, Hans Peter}, title = {Bildschirmunterst{\"u}tztes Konstruieren - Prinziperarbeitung, Gestaltung und Detaillierung mit Hilfe der Men{\"u}technik}, series = {Industrieanzeiger}, volume = {92}, journal = {Industrieanzeiger}, number = {98}, publisher = {Konradin}, address = {Leinfelden-Echterdingen}, isbn = {0019-9036}, pages = {2371 -- 2374}, year = {1970}, language = {de} } @article{BaatzKehrmann1981, author = {Baatz, Udo and Kehrmann, H.}, title = {Neue Produkte - per Zufall oder mit System?}, series = {Jahrbuch f{\"u}r F{\"u}hrungskr{\"a}fte}, journal = {Jahrbuch f{\"u}r F{\"u}hrungskr{\"a}fte}, publisher = {Expert-Verl.}, address = {Grafenau, Z{\"u}rich}, year = {1981}, language = {de} } @article{BaatzButzBaeck1972, author = {Baatz, Udo and Butz, Hans-Werner and B{\"a}ck, Karin}, title = {Aspekte der Bildschirmprogrammierung im Rahmen des rechnergest{\"u}tzten Konstruierens. Some aspects of CRT-screen programming in computer aided design.}, series = {eR - Elektronische Rechenanlagen}, volume = {14}, journal = {eR - Elektronische Rechenanlagen}, number = {5}, publisher = {Oldenbourg}, address = {M{\"u}nchen}, isbn = {0013-5720}, doi = {10.1524/itit.1972.14.16.229}, pages = {229 -- 235}, year = {1972}, abstract = {In den letzten Jahren hat der Einsatz von graphischen Datenverarbeitungsanlagen auf dem technischen, naturwissenschaftlichen und kommerziellen Sektor immer mehr an allgemeinem Interesse und Bedeutung gewonnen. Diese Entwicklung hat neue Aspekte und Probleme in bezug auf Anwendungsm{\"o}glichkeiten, Programmierung, Datenstrukturen sowie der Hard- und Software dieser Anlagen hervorgerufen. Zur Zeit werden von verschiedenen Institutionen die Einsatzm{\"o}glichkeiten graphischer Datenverarbeitungsanlagen in den Funktionsbereichen Konstruktion und Arbeitsvorbereitung untersucht. Der folgende Beitrag zeigt eine kurze {\"U}bersicht {\"u}ber die verschiedenen programmiertechnischen Probleme sowie eine Auswahl von Programmbeispielen, die am Laboratorium f{\"u}r Werkzeugmaschinen und Betriebslehre der RWTH Aachen entwickelt wurden. Bei den Bildschirmsystemen wird zwischen zwei Arten unterschieden. Aktive Bildschirmeinheiten besitzen als {\"a}ußeres Merkmal einen Lichtstift und eine Funktionstastatur zur Programmverzweigung. Passive Bildschirmeinheiten lassen demgegen{\"u}ber einen Eingriff in das Programm in der oben aufgef{\"u}hrten Form nicht zu. Zwischen diesen extremen Formen gibt es noch eine Reihe Mischformen. Die in Aachen zur Verf{\"u}gung stehende Anlage arbeitet aktiv und wird im nachfolgenden Kapitel n{\"a}her beschrieben.}, language = {de} } @article{BaatzButz1972, author = {Baatz, Udo and Butz, Hans-Werner}, title = {Rechnerunterstuetztes Konstruieren mit Symbolen}, series = {TZ f{\"u}r praktische Metallbearbeitung}, volume = {66}, journal = {TZ f{\"u}r praktische Metallbearbeitung}, number = {9}, publisher = {Grossmann}, address = {Stuttgart}, isbn = {0177-8900}, pages = {366 -- 370}, year = {1972}, language = {de} } @article{Baatz1979, author = {Baatz, Udo}, title = {Neue Aspekte der Integrierten Qualit{\"a}tssicherung f{\"u}r Automobil - Zulieferer}, series = {Jahrbuch f{\"u}r Ingenieure}, journal = {Jahrbuch f{\"u}r Ingenieure}, publisher = {Expert-Verl.}, address = {Grafenau, Z{\"u}rich}, year = {1979}, language = {de} } @article{Baatz1972, author = {Baatz, Udo}, title = {Erstellung von Einzelteilzeichnungen mittels graphischer Datenverarbeitungsanlagen}, series = {Konstruktion}, volume = {24}, journal = {Konstruktion}, number = {9}, publisher = {VDI Fachmedien}, address = {D{\"u}sseldorf}, isbn = {0720-5953}, pages = {360 -- 369}, year = {1972}, language = {de} } @article{Baatz1972, author = {Baatz, Udo}, title = {Zukaufteile in Maschinenbauprodukten}, series = {ZWF Zeitschrift f{\"u}r wirtschaftliche Fertigung und Automatisierung}, volume = {67}, journal = {ZWF Zeitschrift f{\"u}r wirtschaftliche Fertigung und Automatisierung}, number = {6}, publisher = {Hanser}, address = {M{\"u}nchen}, isbn = {0044-3743}, doi = {10.1515/zwf-1972-670603}, pages = {301 -- 310}, year = {1972}, abstract = {Die technischen und wirtschaftlichen Anforderungen, die heutzutage an moderne Maschinen, Ger{\"a}te und Apparate gestellt werden, steigen st{\"a}ndig. Immer h{\"a}ufiger sehen sich die Konstrukteure gezwungen, geforderte Funktionen mit Hilfe zugekaufter Normeinzelteile, Bauelemente und Funktionsgruppen zu erf{\"u}llen. Bei dieser Entwicklung vergr{\"o}ßert sich die Zahl der von den Spezialherstellern angebotenen Zukaufteile {\"u}berproportional, in gleichem Maße geht dem Anwender die {\"U}bersicht {\"u}ber das Zukaufteilespektrum verloren. Zun{\"a}chst wird in diesem Bericht diese Entwicklung anhand einer im allgemeinen Maschinenbau durchgef{\"u}hrten Befragung aufgezeigt. Anschließend soll darauf aufbauend ein Ordnungssystem vorgestellt werden, welches jedem Unternehmen wieder eine {\"U}bersicht {\"u}ber das am Markt angebotene Zukaufteilespektrum erm{\"o}glicht.}, language = {de} } @article{Baatz1974, author = {Baatz, Udo}, title = {82.000 FL/h - Eine neue Dimension in der Abf{\"u}llung von Erfrischungsgetr{\"a}nken}, series = {Das Erfrischungsgetr{\"a}nk - Mineralwasser-Zeitung}, volume = {27}, journal = {Das Erfrischungsgetr{\"a}nk - Mineralwasser-Zeitung}, number = {14}, publisher = {Matthaes}, address = {Stuttgart}, isbn = {0342-2232}, pages = {341 -- 345}, year = {1974}, language = {de} } @article{Baatz1974, author = {Baatz, Udo}, title = {Flaschenbehandlung bei hohen Leistungen - Problemstellung und L{\"o}sungsm{\"o}glichkeiten}, series = {Das Erfrischungsgetr{\"a}nk - Mineralwasser-Zeitung}, volume = {27}, journal = {Das Erfrischungsgetr{\"a}nk - Mineralwasser-Zeitung}, number = {15}, publisher = {Matthaes}, address = {Stuttgart}, isbn = {0342-2232}, pages = {1175 -- 1178}, year = {1974}, language = {de} } @article{Baatz1974, author = {Baatz, Udo}, title = {Zur Problematik der Etikettenentfernung}, series = {Das Erfrischungsgetr{\"a}nk - Mineralwasser-Zeitung}, volume = {27}, journal = {Das Erfrischungsgetr{\"a}nk - Mineralwasser-Zeitung}, number = {39}, publisher = {Matthaes}, address = {Stuttgart}, isbn = {0342-2232}, pages = {926 -- 928}, year = {1974}, language = {de} } @article{Baatz1979, author = {Baatz, Udo}, title = {Wie erkennt man Rationalisierungsreserven im Konstruktionsbereich}, series = {Das Jahrbuch f{\"u}r Ingeneure 79 : aktuelles Wissen aus Forschung u. Praxis / Bartz, Wilfried J.; Wippler, Elmar}, journal = {Das Jahrbuch f{\"u}r Ingeneure 79 : aktuelles Wissen aus Forschung u. Praxis / Bartz, Wilfried J.; Wippler, Elmar}, publisher = {Expert-Verl.}, address = {Grafenau, W{\"u}rtt.}, isbn = {0171-3809}, pages = {263 -- 268}, year = {1979}, language = {de} } @article{BaaderBoxbergChenetal.2023, author = {Baader, Fabian and Boxberg, Marc S. and Chen, Qian and F{\"o}rstner, Roger and Kowalski, Julia and Dachwald, Bernd}, title = {Field-test performance of an ice-melting probe in a terrestrial analogue environment}, series = {Icarus}, journal = {Icarus}, number = {409}, publisher = {Elsevier}, address = {Amsterdam}, doi = {10.1016/j.icarus.2023.115852}, pages = {Artikel 115852}, year = {2023}, abstract = {Melting probes are a proven tool for the exploration of thick ice layers and clean sampling of subglacial water on Earth. Their compact size and ease of operation also make them a key technology for the future exploration of icy moons in our Solar System, most prominently Europa and Enceladus. For both mission planning and hardware engineering, metrics such as efficiency and expected performance in terms of achievable speed, power requirements, and necessary heating power have to be known. Theoretical studies aim at describing thermal losses on the one hand, while laboratory experiments and field tests allow an empirical investigation of the true performance on the other hand. To investigate the practical value of a performance model for the operational performance in extraterrestrial environments, we first contrast measured data from terrestrial field tests on temperate and polythermal glaciers with results from basic heat loss models and a melt trajectory model. For this purpose, we propose conventions for the determination of two different efficiencies that can be applied to both measured data and models. One definition of efficiency is related to the melting head only, while the other definition considers the melting probe as a whole. We also present methods to combine several sources of heat loss for probes with a circular cross-section, and to translate the geometry of probes with a non-circular cross-section to analyse them in the same way. The models were selected in a way that minimizes the need to make assumptions about unknown parameters of the probe or the ice environment. The results indicate that currently used models do not yet reliably reproduce the performance of a probe under realistic conditions. Melting velocities and efficiencies are constantly overestimated by 15 to 50 \% in the models, but qualitatively agree with the field test data. Hence, losses are observed, that are not yet covered and quantified by the available loss models. We find that the deviation increases with decreasing ice temperature. We suspect that this mismatch is mainly due to the too restrictive idealization of the probe model and the fact that the probe was not operated in an efficiency-optimized manner during the field tests. With respect to space mission engineering, we find that performance and efficiency models must be used with caution in unknown ice environments, as various ice parameters have a significant effect on the melting process. Some of these are difficult to estimate from afar.}, language = {en} } @article{AyedKustererFunkeetal.2017, author = {Ayed, Anis Haj and Kusterer, Karsten and Funke, Harald and Keinz, Jan and Bohn, D.}, title = {CFD based exploration of the dry-low-NOx hydrogen micromix combustion technology at increased energy densities}, series = {Propulsion and Power Research}, volume = {6}, journal = {Propulsion and Power Research}, number = {1}, publisher = {Elsevier}, address = {Amsterdam}, isbn = {2212-540X}, doi = {10.1016/j.jppr.2017.01.005}, pages = {15 -- 24}, year = {2017}, language = {en} }