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991.
Prof. Dr.-Ing. Michael Beckmann PD Dr.-Ing. habil. Frank Babick Prof. Dr. rer. nat. et Ing. habil. Kerstin Eckert Dr.-Ing. Sascha Heitkam Prof. Dr.-Ing. Markus Schubert Prof. Dr.-Ing. habil. Leon Urbas Prof. Dr.-Ing. habil. Michael Stintz 《化学，工程师，技术》2023,95(11):1691-1706
At the Technische Hochschule Dresden, the predecessor institution of the TU Dresden, a specialization “Engineer for Process Engineering” was established in 1953 with the filling of the specialist professorship for chemical engineering, and the present Institute for Process and Environmental Engineering was founded. Since then, the profile in education and research of the institute within the Faculty of Mechanical Science and Engineering of the Technische Universität Dresden (TUD) has been considerably extended. Based on this development, the current main research areas of the five chairs and research groups are presented. 相似文献
992.
Prof. Dr. Frank Lipnizki Dr. Johan Thuvander Dr. Gregor Rudolph-Schöpping 《化学，工程师，技术》2023,95(9):1403-1408
Proteins are not only important for our daily diet but also one of the most important food ingredients worldwide. Since the 1970ies membrane processes have established themselves as a key unit operation in protein processing, e.g., in the dairy industry. The recent trend of the protein shift moving consumption of animal-based to plant-based proteins provides new applications for membrane processes. Thus, in this work, the opportunities to transfer the membrane processing experiences from animal-based proteins to plant-based protein products will be the focus. 相似文献
993.
Baptiste Wilmet Jacques Callebert Robert Duvoisin Ruben Goulet Christophe Tourain Christelle Michiels Helen Frederiksen Frank Schaeffel Olivier Marre Jos Alain Sahel Isabelle Audo Serge Picaud Christina Zeitz 《International journal of molecular sciences》2023,24(1)
Mutations in GPR179 are one of the most common causes of autosomal recessive complete congenital stationary night blindness (cCSNB). This retinal disease is characterized in patients by impaired dim and night vision, associated with other ocular symptoms, including high myopia. cCSNB is caused by a complete loss of signal transmission from photoreceptors to ON-bipolar cells. In this study, we hypothesized that the lack of Gpr179 and the subsequent impaired ON-pathway could lead to myopic features in a mouse model of cCSNB. Using ultra performance liquid chromatography, we show that adult Gpr179−/− mice have a significant decrease in both retinal dopamine and 3,4-dihydroxyphenylacetic acid, compared to Gpr179+/+ mice. This alteration of the dopaminergic system is thought to be correlated with an increased susceptibility to lens-induced myopia but does not affect the natural refractive development. Altogether, our data added a novel myopia model, which could be used to identify therapeutic interventions. 相似文献
994.
Frank Riedewald Ian Povey Killian Barton Liam Lewis Silvia Santos Maria O'Mahoney Maria Sousa-Gallagher 《化学，工程师，技术》2023,95(6):944-949
Tantalum is the crucial metal of surface-mounted (SMD) tantalum capacitors. Some 50 % of the tantalum mined is consumed in its manufacture, making waste printed circuit boards (WPCBs) an excellent source of secondary tantalum. Yet, its recycling rate is less than 1 %. This paper proposes liberating SMD capacitors from WPCBs by treating them with molten metal or salt. For both processes, the epoxy encapsulation of the capacitors did not disengage from the tantalum core. Furthermore, the molten metal process appears superior to the molten salt one. The tantalum capacitors exit the pyrolysis chamber without salt adhering to them. 相似文献
995.
Benjamin Spetzler;Dilara Abdel;Frank Schwierz;Martin Ziegler;Patricio Farrell; 《Advanced Electronic Materials》2024,10(1):2300635
Two-dimensional layered transition metal dichalcogenides (TMDCs) are promising memristive materials for neuromorphic computing systems. Despite extensive experimental work, the underlying switching mechanisms are still not understood, impeding progress in material and device functionality. This study reveals the dominant role of defect dynamics in the switching process of 2D TMDC materials. The switching process is governed by the formation and annihilation dynamics of a local vacancy depletion zone. It explains the distinct features of the device characteristics observed experimentally, including fundamentally different device behavior previously thought to originate from multiple mechanisms. Key influence factors are identified and discussed with a fully coupled and dynamic charge transport model for electrons, holes, and ionic point defects, including image-charge-induced Schottky barrier lowering (SBL). Thermal effects and local Joule heating are considered by coupling the transient heat transfer equation to the electronic properties. The model is validated with hysteresis and pulse measurements for various lateral 2D MoS2-based devices, strongly corroborating the relevance of vacancy dynamics in TMDC devices and offering a new perspective on the switching mechanisms. The insights gained from this study can be used to extend the functional behavior of 2D TMDC memristive devices in future neuromorphic computing applications. 相似文献
996.
997.
Contribution to the design approach of welds in air‐tight box girders under temperature induced internal pressure Air‐tight steel box girders have been frequently and successfully used in bridge building during the last years. Only inspection and maintenance of welds and parts inside the box girder proves difficult. This makes a robust design of welds inside necessary. Measurements confirmed that temperature differences lead to substantial changes in inside pressure within an air‐tight steel box girder. These pressure differences result in additional, non‐negligible – nevertheless so far neglected – increases in loading of welds connecting flanges and webs of box girders. In this contribution we derive a simple design approach for welds in air‐tight box girders under shear loading from the main structure as well as bending resulting from temperature induced internal pressure loading. We study the influence of different parameters on the required throat thickness of the welds. Finally, we demonstrate the application of the derived formulation. 相似文献
998.
Quantitative cross‐sectional study of the BIM‐application in planning offices – benefits and barriers of the BIM‐implementation Building Information Modeling (BIM) is one of the drivers of the construction industries digitalization. However, planning offices still express reservations about the BIM‐method. To determine the status quo of the BIM‐application in planning offices, a cross‐sectional study was accomplished. First, the study participants were dedicated to the three groups of “BIM‐users”, “BIM‐changers” and “BIM‐not‐users”. Afterwards they were questioned about their experiences and expectations regarding the BIM‐method. Among others, the benefits of the BIM‐method and the barriers of the BIM‐implementation are examined. The need for action and the information demand for a successful BIM‐application can be deduced. The results of the study show exemplifying that the BIM‐application depends essentially on the type of planning services (HOAI) and the size of the planning office. An information demand on behalf of the BIM‐not‐users is the demonstration of a more efficient communication among planning parties and the increasing efficiency during the execution drawings process. Furthermore, there is an urgent need for action and information demand in the public sector for the implementation of a more efficient (digitalized) building permit process. Examples for barriers of the BIM‐implementation are the missing BIM‐expertise among the employees and the expenditure of cost and time necessary to implement the BIM‐method. 相似文献
999.
Wireless sensor networks for monitoring moisture of historic structures by electrical impedance spectroscopy Moisture within natural stone, from time to time in combination with various salts, is one of the most severe and most costly deterioration origin at historic buildings. We have therefore designed a wireless measurement system, which can be permanently installed to continuously monitor the electrical impedance of a structure in combination with the environmental conditions. This instrumented monitoring allows the acquisition of information on its moisture content, both with and without salts. A joint analysis including the supplemental measured parameters may be used to draw conclusions on the dynamic interaction between moisture and salt transport. 相似文献
1000.
Rural areas are the locus of many pressing planning issues, pointing to the need for and possibility of a substantive theory of rural planning. In this article we develop a framework for such a theory. We begin by outlining the emergence of planning and the marginalization of ‘the rural,’ by investigating aspects of existing planning theory. Then we explain the framework and apply it to a small set of critical cases in deep rural areas of the U.S. To conclude, we summarize our findings and propose future directions for theory in rural planning. 相似文献