@inproceedings{UibelBlass2010, author = {Uibel, Thomas and Blaß, Hans Joachim}, title = {A new method to determine suitable spacings and distances for self-tapping screws}, series = {Meeting ... / International Council for Research and Innovation in Building and Construction, Working Commission W18 - Timber Structures}, volume = {43}, booktitle = {Meeting ... / International Council for Research and Innovation in Building and Construction, Working Commission W18 - Timber Structures}, publisher = {Lehrstuhl f{\"u}r Ingenieurholzbau und Baukonstruktionen}, address = {Karlsruhe}, issn = {1864-1784}, year = {2010}, abstract = {The determination of spacing, edge and end distance requirements for self-tapping screws requires numerous and comprehensive insertion tests. Yet the results of such tests cannot be transferred to other types of screws or even to screws of different diameter because of differences in shape or geometry. To reduce the effort of insertion tests a new method was developed which allows the estimation of required spacings, distances and timber thickness.}, language = {en} } @inproceedings{DammRitzStrauch2010, author = {Damm, Sebastian and Ritz, Thomas and Strauch, Jakob}, title = {Benutzerzentrierte Anforderungsanalyse f{\"u}r die Produktlinien-Entwicklung mobiler Unternehmenssoftware}, series = {EMISA 2010 : Einflussfaktoren auf die Entwicklung flexibler, integrierter Informationssysteme ; Beitr{\"a}ge des Workshops der GI-Fachgruppe Entwicklungsmethoden f{\"u}r Informationssysteme und deren Anwendung (EMISA), 07. - 08.10.2010 in Karlsruhe, Germany. - (GI-Edition : Proceedings ; 172)}, booktitle = {EMISA 2010 : Einflussfaktoren auf die Entwicklung flexibler, integrierter Informationssysteme ; Beitr{\"a}ge des Workshops der GI-Fachgruppe Entwicklungsmethoden f{\"u}r Informationssysteme und deren Anwendung (EMISA), 07. - 08.10.2010 in Karlsruhe, Germany. - (GI-Edition : Proceedings ; 172)}, editor = {Klink, Stefan}, publisher = {Ges. f{\"u}r Informatik}, address = {Bonn}, isbn = {978-3-88579-266-6}, pages = {117 -- 130}, year = {2010}, language = {de} } @inproceedings{MagnorSoltauBragardetal.2010, author = {Magnor, D. and Soltau, N. and Bragard, Michael and Schmiegel, A. and De Doncker, R. W. and Sauer, D. U.}, title = {Analysis of the model dynamics for the battery and battery converter in a grid-connected 5 kW photovoltaic system}, series = {Proceedings / 25th European Photovoltaic Solar Energy Conference and Exhibition ; 5th World Conference on Photovoltaic Energy Conversion ; Feria Valencia, Convention \& Exhibition Centre, Valencia, Spain, conference 6 - 10 September 2010, exhibition 6 - 9 September 2010 ; Joint World Conference of: 25th European Photovoltic Solar Energy Conference and Exhibition, 36th US IEEE Photovoltaic Specialists Conference, 20th Asia/Pacific PV Science and Engineering Conference}, booktitle = {Proceedings / 25th European Photovoltaic Solar Energy Conference and Exhibition ; 5th World Conference on Photovoltaic Energy Conversion ; Feria Valencia, Convention \& Exhibition Centre, Valencia, Spain, conference 6 - 10 September 2010, exhibition 6 - 9 September 2010 ; Joint World Conference of: 25th European Photovoltic Solar Energy Conference and Exhibition, 36th US IEEE Photovoltaic Specialists Conference, 20th Asia/Pacific PV Science and Engineering Conference}, editor = {de Santi, Giovanni Frederigo}, publisher = {WIP Renewable Energies}, address = {[M{\"u}nchen]}, isbn = {3-936338-26-4 (DVD-ROM)}, year = {2010}, language = {en} } @article{BragardSoltauThomasetal.2010, author = {Bragard, Michael and Soltau, N. and Thomas, S. and De Doncker, R. W.}, title = {The balance of renewable sources and user demands in grids : power electronics for modular battery energy storage systems}, series = {IEEE transactions on power electronics}, volume = {25}, journal = {IEEE transactions on power electronics}, number = {12}, publisher = {IEEE}, address = {New York}, issn = {0885-8993}, doi = {10.1109/TPEL.2010.2085455}, pages = {3049 -- 3056}, year = {2010}, abstract = {The continuously growing amount of renewable sources starts compromising the stability of electrical grids. Contradictory to fossil fuel power plants, energy production of wind and photovoltaic (PV) energy is fluctuating. Although predictions have significantly improved, an outage of multi-MW offshore wind farms poses a challenging problem. One solution could be the integration of storage systems in the grid. After a short overview, this paper focuses on two exemplary battery storage systems, including the required power electronics. The grid integration, as well as the optimal usage of volatile energy reserves, is presented for a 5- kW PV system for home application, as well as for a 100- MW medium-voltage system, intended for wind farm usage. The efficiency and cost of topologies are investigated as a key parameter for large-scale integration of renewable power at medium- and low-voltage.}, language = {en} } @incollection{Raatschen2010, author = {Raatschen, Hans-J{\"u}rgen}, title = {75 Jahre Vereinsgeschichte}, series = {Ingenieurfreunde FH Aachen : 75 Jahre F{\"o}rderverein; Elektrotechnik und Informationstechnik, Luft- und Raumfahrttechnik, Maschinenbau und Mechatronik}, booktitle = {Ingenieurfreunde FH Aachen : 75 Jahre F{\"o}rderverein; Elektrotechnik und Informationstechnik, Luft- und Raumfahrttechnik, Maschinenbau und Mechatronik}, publisher = {Klinkenberg}, address = {Aachen}, isbn = {978-3-941704-03-9}, pages = {66 -- 72}, year = {2010}, subject = {Geschichte}, language = {de} } @article{EilmannBuchmannSiegwolfetal.2010, author = {Eilmann, Britta and Buchmann, Nina and Siegwolf, Rolf and Saurer, Matthias and Cherubini, Paolo and Rigling, Andreas}, title = {Fast response of Scots pine to improved water availability reflected in tree-ring width and δ13C}, series = {Plant, Cell and Environment}, volume = {33}, journal = {Plant, Cell and Environment}, number = {8}, publisher = {Wiley-Blackwell}, address = {Oxford}, issn = {1365-3040 (Online)}, doi = {10.1111/j.1365-3040.2010.02153.x}, pages = {1351 -- 1360}, year = {2010}, abstract = {Drought-induced forest decline, like the Scots pine mortality in inner-Alpine valleys, will gain in importance as the frequency and severity of drought events are expected to increase. To understand how chronic drought affects tree growth and tree-ring δ13C values, we studied mature Scots pine in an irrigation experiment in an inner-Alpine valley. Tree growth and isotope analyses were carried out at the annual and seasonal scale. At the seasonal scale, maximum δ13C values were measured after the hottest and driest period of the year, and were associated with decreasing growth rates. Inter-annual δ13C values in early- and latewood showed a strong correlation with annual climatic conditions and an immediate decrease as a response to irrigation. This indicates a tight coupling between wood formation and the freshly produced assimilates for trees exposed to chronic drought. This rapid appearance of the isotopic signal is a strong indication for an immediate and direct transfer of newly synthesized assimilates for biomass production. The fast appearance and the distinct isotopic signal suggest a low availability of old stored carbohydrates. If this was a sign for C-storage depletion, an increasing mortality could be expected when stressors increase the need for carbohydrate for defence, repair or regeneration.}, language = {en} } @article{FontivonArxGarciaGonzalezetal.2010, author = {Fonti, Patrick and von Arx, Georg and Garc{\´i}a-Gonz{\´a}lez, Ignacio and Eilmann, Britta and Sass-Klaassen, Ute G. W. and G{\"a}rtner, Holger and Eckstein, Dieter}, title = {Studying global change through investigation of the plastic responses of xylem anatomy in tree rings}, series = {New Phytologist}, volume = {185}, journal = {New Phytologist}, number = {1}, publisher = {Wiley-Blackwell}, address = {Oxford}, issn = {1469-8137 (Online)}, doi = {10.1111/j.1469-8137.2009.03030.x}, pages = {42 -- 53}, year = {2010}, abstract = {Variability in xylem anatomy is of interest to plant scientists because of the role water transport plays in plant performance and survival. Insights into plant adjustments to changing environmental conditions have mainly been obtained through structural and functional comparative studies between taxa or within taxa on contrasting sites or along environmental gradients. Yet, a gap exists regarding the study of hydraulic adjustments in response to environmental changes over the lifetimes of plants. In trees, dated tree-ring series are often exploited to reconstruct dynamics in ecological conditions, and recent work in which wood-anatomical variables have been used in dendrochronology has produced promising results. Environmental signals identified in water-conducting cells carry novel information reflecting changes in regional conditions and are mostly related to short, sub-annual intervals. Although the idea of investigating environmental signals through wood anatomical time series goes back to the 1960s, it is only recently that low-cost computerized image-analysis systems have enabled increased scientific output in this field. We believe that the study of tree-ring anatomy is emerging as a promising approach in tree biology and climate change research, particularly if complemented by physiological and ecological studies. This contribution presents the rationale, the potential, and the methodological challenges of this innovative approach.}, language = {en} } @inproceedings{DiIorioNobileStapenhorst2010, author = {Di Iorio, Marina and Nobile, Maria Luna and Stapenhorst, Carolin}, title = {Martinella}, series = {Edifici alti e paesaggio}, booktitle = {Edifici alti e paesaggio}, editor = {Bovati, Marco and Di Franco, Andrea}, publisher = {Maggioli}, address = {Santarcangelo di Romagna}, isbn = {978-88-387-4434-1}, pages = {191 -- 202}, year = {2010}, language = {it} } @article{SiqueiraMakiPaulovichetal.2010, author = {Siqueira, Jose R. and Maki, Rafael M. and Paulovich, Fernando V. and Werner, Frederik and Poghossian, Arshak and Oliveira, Maria C. F. de and Zucolotto, Valtencir and Oliveira, Osvaldo N. Jr. and Sch{\"o}ning, Michael Josef}, title = {Use of information visualization methods eliminating cross talk in multiple sensing units investigated for a light-addressable potentiometric sensor}, series = {Analytical Chemistry}, volume = {82}, journal = {Analytical Chemistry}, number = {1}, publisher = {ACS Publications}, address = {Washington}, issn = {0003-2700}, doi = {10.1021/ac9024076}, pages = {61 -- 65}, year = {2010}, abstract = {The integration of nanostructured films containing biomolecules and silicon-based technologies is a promising direction for reaching miniaturized biosensors that exhibit high sensitivity and selectivity. A challenge, however, is to avoid cross talk among sensing units in an array with multiple sensors located on a small area. In this letter, we describe an array of 16 sensing units of a light-addressable potentiometric sensor (LAPS), which was made with layer-by-layer (LbL) films of a poly(amidomine) dendrimer (PAMAM) and single-walled carbon nanotubes (SWNTs), coated with a layer of the enzyme penicillinase. A visual inspection of the data from constant-current measurements with liquid samples containing distinct concentrations of penicillin, glucose, or a buffer indicated a possible cross talk between units that contained penicillinase and those that did not. With the use of multidimensional data projection techniques, normally employed in information visualization methods, we managed to distinguish the results from the modified LAPS, even in cases where the units were adjacent to each other. Furthermore, the plots generated with the interactive document map (IDMAP) projection technique enabled the distinction of the different concentrations of penicillin, from 5 mmol L-1 down to 0.5 mmol L-1. Data visualization also confirmed the enhanced performance of the sensing units containing carbon nanotubes, consistent with the analysis of results for LAPS sensors. The use of visual analytics, as with projection methods, may be essential to handle a large amount of data generated in multiple sensor arrays to achieve high performance in miniaturized systems}, language = {en} } @article{GrottkeBraunschweigPhilippenetal.2010, author = {Grottke, O. and Braunschweig, T. and Philippen, B. and Gatzweiler, Karl-Heinz and Gronloh, N. and Staat, Manfred and Rossaint, R. and Tolba, R.}, title = {A new model for blunt liver injuries in the swine}, series = {European Surgical Research}, volume = {44}, journal = {European Surgical Research}, number = {2}, publisher = {Karger}, address = {Basel}, issn = {1421-9921}, doi = {10.1159/000265053}, pages = {65 -- 73}, year = {2010}, abstract = {Background: To elaborate the impact of new haemostatic agents we developed an instrument for the pressure-controlled induction of blunt liver injuries in a porcine animal model. Materials and Methods: A dilutional coagulopathy of 80\% of animal blood volume was induced in 9 anaesthetized pigs. Animals were randomly assigned to be injured with a force of 112 Newton (N) (n = 1), 224 ± 19 N (n = 4) or 355 ± 35 N (n = 4). The impact of injury was measured by blood loss, survival time and coagulation parameters. Liver histology was obtained to evaluate the degree of liver injury. Results: The profound haemodilution resulted in a significant alteration of all coagulation parameters. After inflicting the injury with 355 ± 35 N, both the survival time (30 ± 9 min; p = 0.006) and blood loss (68 ± 16 ml min-1, p = 0.002) were significantly different as compared to injuries with 224 ± 19 N (survival time: 76 ± 20 min, blood loss: 23 ± 4 ml min-1). In contrast, an injury with 112 N led to an insignificant blood loss of only 239 ml. Conclusion: We developed a pressure-controlled clamp that allows for the induction of blunt liver traumas with highly reproducible injuries with a positive correlation with blood loss and survival.}, language = {en} }