@misc{11180, author = {{Ibrahem, Riham and Barakat, Bayan and Bekonda, Euphinette Amba and Schwarzer, Knut and Wilhelm, Patrick and Müller, Ulrich}}, booktitle = {{34. Bernburger Winterseminar Arznei- und Gewürzpflanzen : 20.-21.02.2024 : Tagungsbroschüre }}, isbn = {{978-3-95547-140-8 }}, keywords = {{essential oil, oregano, thyme, steam distillation, vacuum, temperature impact, oil glandular}}, location = {{Bernburg}}, pages = {{78}}, publisher = {{Verein für Arznei- und Gewürzpflanzen SALUPLANTA e.V. }}, title = {{{Messung des Öl-Drüsenschuppenaufschlusses von Thymian und Vergleich der Ergebnisse mit denen von Oregano}}}, doi = {{10.5073/20240131-085854-0 }}, year = {{2024}}, } @misc{11181, author = {{Ibrahem, Riham and Barakat, Bayan and Bekonda, Euphinette Amba and Schwarzer, Knut and Wilhelm, Patrick and Müller, Ulrich}}, keywords = {{essential oil, oregano, thyme, steam distillation, vacuum, temperature impact, oil glandular}}, location = {{Quakenbrück}}, title = {{{Messung des Öl-Drüsenschuppenaufschlusses von Thymian und Vergleich der Ergebnisse mit denen von Oregano}}}, year = {{2024}}, } @misc{12024, author = {{Ibrahem, Riham and Barakat, Bayan and Suliman, Mendana and Shekh Mousa, Ayman and Latta, Mohammed Ismael and Bekonda, Euphinette Amba and Schwarzer, Knut and Müller, Ulrich}}, keywords = {{essential oil, mint plants, stability of glandular, steam distillation, vacuum, temperature impact, oil glandular}}, location = {{Lemgo}}, title = {{{Vergleichende Untersuchungen der Festigkeiten von Ätherisch-Öl-Drüsenschuppen von Lippenblütlern – Sinn und Erkenntnisse}}}, year = {{2024}}, } @misc{11105, author = {{Psiuk, Marta and Wilhelm, Patrick and Müller, Ulrich and Gebhardt, Ronald}}, keywords = {{rheology, oligomere, flow curves, activation energy, temperature sweep, temperature dependence, arrhenius plot}}, location = {{Bochum}}, title = {{{Die Bedeutung der Knäuelbildung bei künstlichen Oligomeren für kinetische Vorgänge wie das Fließen und die Übertragung der Erkenntnisse auf Lebensmittelprozesse}}}, year = {{2023}}, } @misc{11106, author = {{Barakat, Bayan and Schwarzer, Knut and Wilhelm, Patrick and Müller, Ulrich}}, keywords = {{essential oil, oregano, steam distillation, vacuum, temperature impact, oil glandular}}, location = {{Bochum}}, title = {{{Untersuchung des Drüsenschuppenaufschlusses bei Oregano-Pflanzen in Abhängigkeit vom Druck und der Temperatur mittels einer modifizierten Sichtzellen-Apparatur}}}, year = {{2023}}, } @misc{11107, author = {{Bekonda, Euphinette Amba and Barakat, Bayan and Schwarzer, Knut and Wilhelm, Patrick and Müller, Ulrich}}, keywords = {{essential oil, oregano, steam distillation, vacuum, temperature impact, oil glandular}}, location = {{Freising}}, title = {{{Untersuchung des Berstverhaltens von Drüsenschuppen der Ätherisch-Ölpflanze Oregano im Unterdruck}}}, year = {{2023}}, } @misc{9207, abstract = {{A new acceleration model for the reliability prediction of electrical connectors has recently been published. This model enables the evaluation of failure rates gained in highly accelerated life tests (HALT) and considers thermal and vibrational loading. However, since the initial study only covered a small set of test parameters, further study of the model is required. Previous studies have sufficiently investigated the influence of the vibration test mode on the failure rate of electrical connectors. Therefore, this study now focuses on the influence of the thermal cycling test. A commonly used automotive connector is chosen and subjected to stresses in HALT covering various upper temperatures, test durations and thermal cycling frequencies. Additionally, the principles of determining the coefficient of temperature difference and the coefficient of the thermal cycling frequency are presented, since these coefficients are connector specific and required for the acceleration model. Based on the numbers of failures in test, the influence of the various thermal cycling tests is discussed, and the coefficients are calculated for the chosen connector. In conclusion a guideline to select an appropriate upper temperature and test duration in order to compare the reliability of different electrical connectors is provided.}}, author = {{Krüger, Kevin and Song, Jian}}, booktitle = {{Microelectronics reliability : an internat. journal & world abstracting service}}, issn = {{0026-2714}}, keywords = {{Electrical connectors, Life test, Thermal cycling, Upper temperature Duration, Temperature difference, Cycling frequency}}, number = {{November 2022}}, publisher = {{Elsevier}}, title = {{{The influence of thermal cycling test parameters on the failure rate of electrical connectors}}}, doi = {{https://doi.org/10.1016/j.microrel.2022.114633}}, volume = {{138}}, year = {{2022}}, } @misc{12225, abstract = {{Lake Sevan is the largest freshwater body in the Caucasus region, situated at an altitude of 1,900 m asl. While it is a major water resource in the whole region, Lake Sevan has received little attention in international limnological literature. Although recent studies pointed to algal blooms and negative impacts of climate change and eutrophication, the physical controls on thermal dynamics have not been characterized and model-based assessments of climate change impacts are lacking. We compiled a decade of historical data for meteorological conditions and temperature dynamics in Lake Sevan and used a one-dimensional hydrodynamic model (GLM 3.1) in order to study thermal structure, the stratification phenology and their meteorological drivers in this large mountain lake. We then evaluated the representativeness of meteorological data products covering almost 4 decades (EWEMBI-dataset: 1979-2016) for driving the model and found that these data are well suited to restore long term thermal dynamics in Lake Sevan. This established model setting allowed us to identify major changes in Lake Sevan’s stratification in response to changing meteorological conditions as expected from ongoing climate change. Our results point to a changing mixing type from dimictic to monomictic as Lake Sevan will experience prolonged summer stratification periods and more stable stratification. These projected changes in stratification must be included in long-term management perspectives as they will intensify water quality deteriorations like surface algal blooms or deep water anoxia.}}, author = {{Shikhani, Muhammed and Mi, Chenxi and Gevorgyan, Artur and Gevorgyan, Gor and Misakyan, Amalya and Azizyan, Levon and Barfus, Klemens and Schulze, Martin and Shatwell, Tom and Rinke, Karsten}}, booktitle = {{Journal of Limnology}}, issn = {{1723-8633}}, keywords = {{General Lake Model (GLM), Lake Sevan, temperature stratification, EWEMBI, climate warming}}, number = {{s1}}, publisher = {{Istituto per lo Studio degli Ecosistemi (Verbania) }}, title = {{{Simulating thermal dynamics of the largest lake in the Caucasus region: The mountain Lake Sevan}}}, doi = {{10.4081/jlimnol.2021.2024}}, volume = {{81}}, year = {{2021}}, } @misc{12231, abstract = {{In temperate lakes, it is generally assumed that light rather than temperature constrains phytoplankton growth in winter. Rapid winter warming and increasing observations of winter blooms warrant more investigation of these controls. We investigated the mechanisms regulating a massive winter diatom bloom in a temperate lake. High frequency data and process-based lake modeling demonstrated that phytoplankton growth in winter was dually controlled by light and temperature, rather than by light alone. Water temperature played a further indirect role in initiating the bloom through ice-thaw, which increased light exposure. The bloom was ultimately terminated by silicon limitation and sedimentation. These mechanisms differ from those typically responsible for spring diatom blooms and contributed to the high peak biomass. Our findings show that phytoplankton growth in winter is more sensitive to temperature, and consequently to climate change, than previously assumed. This has implications for nutrient cycling and seasonal succession of lake phytoplankton communities. The present study exemplifies the strength in integrating data analysis with different temporal resolutions and lake modeling. The new lake ecological model serves as an effective tool in analyzing and predicting winter phytoplankton dynamics for temperate lakes.}}, author = {{Kong, Xiangzhen and Seewald, Michael and Dadi, Tallent and Friese, Kurt and Mi, Chenxi and Boehrer, Bertram and Schultze, Martin and Rinke, Karsten and Shatwell, Tom}}, booktitle = {{Water research : a journal of the International Water Association}}, issn = {{1879-2448}}, keywords = {{Winter diatom bloom, High frequency monitoring, Lake modeling, Light limitation, Temperature}}, publisher = {{Elsevier BV}}, title = {{{Unravelling winter diatom blooms in temperate lakes using high frequency data and ecological modeling}}}, doi = {{10.1016/j.watres.2020.116681}}, volume = {{190}}, year = {{2020}}, } @inproceedings{2007, abstract = {{Multisensor systems are susceptible to sensor ageing effects as well as to environmental changes. Due to these effects, the distribution of sensor measurements may change over time, which is referred to as sensor drift. A multisensor system which adapts to drift by self-monitoring is more durable, requires less manual maintenance, and provides information of higher quality. This contribution proposes an approach for detecting and adapting to sensor drift. The proposed detection algorithm determines the reliability of a sensor based on fuzzy pattern classifiers and a consistency measure. By this means, the inherent redundancy in multisensor systems is exploited to detect drift. Detected drift leads then to a retraining of the classifier on batched data guided by information fusion. The retraining incorporates the estimated magnitude of the drift. The proposed algorithms are evaluated in comparison with state-of-the-art methods in the scope of a publicly available dataset. It is shown that the drift detection algorithm yields results similar to the benchmark algorithm but is less computationally complex. Relearning with the drift-adapted approach results in more robust classifiers with regard to potential future drift.}}, author = {{Holst, Christoph-Alexander and Lohweg, Volker}}, booktitle = {{23rd IEEE International Conference on Emerging Technologies and Factory Automation (ETFA)}}, keywords = {{Multisensor systems, Temperature measurement, Current measurement, Redundancy, Pollution measurement, Detection algorithms}}, location = {{Torino, Italy}}, title = {{{A Conflict-Based Drift Detection And Adaptation Approach for Multisensor Information Fusion}}}, doi = {{10.1109/ETFA.2018.8502571}}, year = {{2018}}, } @inproceedings{6317, abstract = {{The electrical-thermal behavior of an electrical connector is determined by heat generation due to Joule heating and heat absorption by conduction, convection and radiation. Heat flow from the connector to the wire is an important heat absorption mechanism for most electrical connectors. The temperature difference between the connector and the wire at infinity is proportional to the axial heat flow induced into the wire. The purpose of this study is to dimension the electrical resistance of a connector for power distribution by the heat flow into the wire. The heat flow is used as a design factor in order to define the maximum power loss for wires with different cross-section areas. With this approach the maximum acceptable electrical resistance for connectors with different sizes can be estimated in the early stages of the design process.}}, author = {{Blauth, Michael and Berger, Frank and Song, Jian}}, booktitle = {{60th IEEE Holm Conference on Electrical Contacts}}, isbn = {{978-1-4799-6069-9 }}, keywords = {{Wires, Connectors, Temperature measurement, Resistance, Heat transfer, Resistance heating}}, location = {{New Orleans, LA, USA }}, pages = {{192 -- 199}}, publisher = {{IEEE}}, title = {{{Influence of the Electrical Resistance and Wire Size on the Current Carrying Capacity of Connectors}}}, doi = {{10.1109/HOLM.2014.7031043}}, year = {{2014}}, }