@misc{OPUS4-7052, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2025,27 (09.07.2025)}, doi = {10.26127/BTUOpen-7052}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70524}, year = {2025}, abstract = {1. Erste {\"A}nderungssatzung zur fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Umweltingenieurwesen (B.Sc.) vom 07. Juli 2025 2. Lesefassung: Neufassung der fachspezifischen Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Umweltingenieurwesen vom 21. September 2021 (AMbl. 17/2021) i. d. F. der Ersten {\"A}nderungssatzung zur Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Umweltingenieurwesen (B.Sc.) vom 07. Juli 2025}, language = {de} } @article{BucherDjoudiBirkhofer2025, author = {Bucher, Roman and Djoudi, El Aziz and Birkhofer, Klaus}, title = {Land‑use impacts on crop yield : direct and indirect roles of arthropods and associated ecosystem services in European farmland}, series = {Landscape Ecology}, volume = {40}, journal = {Landscape Ecology}, publisher = {Springer Nature}, address = {Heidelberg}, issn = {1572-9761}, doi = {10.1007/s10980-025-02117-w}, year = {2025}, abstract = {Land-use intensification to increase yields is often detrimental to biodiversity undermining the provision of ecosystem services. However, it is questionable if ecosystem service providers contribute to ecological intensification by achieving the same or higher yields than conventional high-intensity agriculture. In this study, we aimed to disentangle the effects of local and landscape-scale land-use intensification on arthropod communities and their contribution to ecosystem services and crop yield. A set of meta-analytic structural equation models allowed us to assess direct and indirect relationships in the cascade from land use to yield. We selected 37 datasets containing information on land use, community composition, levels of pollination and natural pest control services, and crop yield. We quantified functional diversity of communities by collecting trait information for three exemplary groups of service-providers: bees, ground beetles, and spiders. Local land-use intensification reduced the abundance of all arthropod groups. Spiders were the only group whose species richness was negatively related to a higher percentage of arable land in the landscape. High abundance of bees related positively to oilseed rape pollination and crop yields. In the models for the two predator groups, crop yield was strongly determined by land use, independent of the pest control services provided by natural enemies. Our results suggest a potential for ecological intensification mediated by land-use change in crops where pollination benefits yield, but suggest more nuanced effects for pest control. Our study also calls for experiments on multiple taxonomic groups and ecosystem services that apply comparable methods at similar scales.}, subject = {Agroecology; Ecological intensification; Meta-analytic structural equation models; Pollination; Pest control}, language = {en} } @article{BerneckerGebhardtAmoretal.2025, author = {Bernecker, Maximilian and Gebhardt, Marc and Amor, Souhir Ben and Wolter, Martin and M{\"u}sgens, Felix}, title = {Quantifying the impact of load forecasting accuracy on congestion management in distribution grids}, series = {International Journal of Electrical Power and Energy Systems}, volume = {168}, journal = {International Journal of Electrical Power and Energy Systems}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1879-3517}, doi = {10.1016/j.ijepes.2025.110713}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70351}, year = {2025}, abstract = {Digitalization is a global trend in energy systems and beyond. However, it is often unclear what digitalization means exactly in the context of energy systems and how the benefits of digitalization can be quantified. Providing additional information, e.g., through sensors and metering equipment, is one concrete angle where digitalization contributes. This paper provides a framework to quantify the value of such additional information in distribution grids. We analyze to what extent smart meters improve the accuracy of day-ahead load forecasts and quantify the savings in congestion management costs resulting from the improved accuracy. To quantify the cost reduction, we conduct a case study employing a simplified IEEE test system. Historical electricity load data from over 6,000 smart meters was used to improve day-ahead load forecasts. We assessed and compared the forecasting performance to estimates based on standard load profiles with multiple load forecast simulations in the network based on uncertainty parameterizations from forecasts with and without smart meter data. Calculating redispatch cost in the distribution grid, we find that the forecast based on smart meter data reduces key redispatch parameters such as the share of expected voltage violations, the amount of rescheduled generation by more than 90\%. These improvements translate into a reduction in congestion management costs by around 97\%. Furthermore, we shed light on whether the gains increase linearly with the number of smart meters and available data in the grid. When smart meter shares are increased uniformly throughout the grid, savings are concave, i.e., the first 10\% of smart meters reduces congestion management costs by around 20\% while the last 10\% reduces these costs only marginally. Focusing smart meter installation on the most congested nodes reduces congestion management costs by around 60\% with just 10\% smart meter coverage, significantly outperforming a uniform rollout. However, savings in congestion management alone are not likely to recover the installation and operation costs of the installed smart meter.}, subject = {Distribution Grid; Congestion management; Uncertainty; Forecasting; Smart Meter}, language = {en} } @article{BasuUlrbrichtRossol2025, author = {Basu, Syamantak and Ulrbricht, Ying and Rossol, Manuela}, title = {Healthy and premature aging of monocytes and macrophages}, series = {Frontiers in Immunology}, volume = {16}, journal = {Frontiers in Immunology}, publisher = {Frontiers}, address = {Lausanne}, issn = {1664-3224}, doi = {10.3389/fimmu.2025.1506165}, year = {2025}, abstract = {Aging is associated with immunosenescence, a decline in immune functions, but also with inflammaging, a chronic, low-grade inflammation, contributing to immunosenescence. Monocytes and macrophages belong to the innate immune system and aging has a profound impact on these cells, leading to functional changes and most importantly, to the secretion of pro-inflammatory cytokines and thereby contributing to inflammaging. Rheumatoid arthritis (RA) is an autoimmune disease and age is an important risk factor for developing RA. RA is associated with the early development of age-related co-morbidities like cardiovascular manifestations and osteoporosis. The immune system of RA patients shows signs of premature aging like age-inappropriate increased production of myeloid cells, accelerated telomeric erosion, and the uncontrolled production of pro-inflammatory cytokines. In this review we discuss the influence of aging on monocytes and macrophages during healthy aging and premature aging in rheumatoid arthritis.}, subject = {Monocytes; Macrophages; Aging; Immunosenescence; Rheumatoid arthritis}, language = {en} } @article{SaraviaTrachte2025, author = {Saravia, Christian and Trachte, Katja}, title = {Spatiotemporal analysis of NH³ emission sources and their relation to land use types in the eastern German lowlands}, series = {Atmosphere}, volume = {16}, journal = {Atmosphere}, number = {3}, publisher = {MDPI}, address = {Basel}, issn = {2073-4433}, doi = {10.3390/atmos16030346}, year = {2025}, abstract = {Ammonia (NH³) emissions, which are key precursors of fine particulate matter, pose significant environmental challenges. This study investigated the spatiotemporal variations in NH³ emissions across the eastern German lowlands from 2013 to 2022 using IASI-B satellite data. Five major Land Cover Classes (LCC) -tree, grassland, cropland, built-up areas, and water bodies- were analyzed. The results showed distinct diurnal variations, with nighttime NH³ concentrations exceeding 2.0 × 10¹⁶ molecules cm⁻² in the peak months. Seasonal patterns indicated significant emissions in March (1.2 × 10¹⁶ molecules cm⁻²), April (1.1 × 10¹⁶ molecules cm⁻²), and August (9.6 × 10¹⁵ molecules cm⁻²), while the lowest concentrations occurred in September (0.6 × 10¹⁵ molecules cm⁻²). Persistent hotspots were identified in the northwestern region, where emissions peaked in spring (1.8 × 10¹⁶ molecules cm⁻²) and summer (1.3 × 10¹⁶ molecules cm⁻²), primarily due to agricultural activities. Over the study period, the annual NH³ concentration peaked in 2015, 2018, and 2022. Using k-means clustering, three distinct emission zones were identified, with Cluster 3 showing the highest NH³ emission values, particularly in urban centers, and agricultural zones were identified, covering less than 20\% of the study area, where cropland predominates (8\%). Meteorological factors significantly influenced NH³ levels, with negative correlations obtained for precipitation, wind speed, and evaporation, while solar radiation, boundary layer height, and instantaneous moisture fluxes showed positive correlations. A case study from March 2022, employing the HYSPLIT trajectory model, confirmed that agricultural practices are the dominant NH³ source, with emissions reaching 3.2 × 10¹⁶ molecules cm⁻² in hotspot regions.}, subject = {Ammonia; Remote sensing; Land cover type; Spatiotemporal variability; Cluster k-means}, language = {en} } @article{KotGawlińskaNęcekPożarowskaetal.2025, author = {Kot, Małgorzata and Gawlińska-Nęcek, Katarzyna and Pożarowska, Emilia and Henkel, Karsten and Schmeißer, Dieter}, title = {Photosensitivity and carrier densities of perovskite solar absorbers}, series = {Advanced Science}, volume = {12}, journal = {Advanced Science}, number = {16}, publisher = {Wiley}, address = {Weinheim}, issn = {2198-3844}, doi = {10.1002/advs.202412711}, year = {2025}, abstract = {Dark and light current-voltage characteristics of perovskite solar absorbers are analyzed in terms of their carrier densities. The analysis reveals p-type large polarons as a dominant carrier type in the investigated perovskite solar cells. The mechanism causing photosensitivity is attributed to the dissociation (and pairing) of bipolarons to large polarons (and vice versa) that are controlled by the internal potential Γ. As an example, the polaron concept is tested for a formamidinium lead triiodide perovskite solar cell. The individual steps of the data analysis are demonstrated and determine the ionicity factor of this perovskite film, quantify the density of the large polarons, and predict the gain and loss of photo-induced carriers. It is deduced that a reversible light-on/off operation can only occur when the bias voltage never exceeds a critical value of the internal potential. The results gained in this study suggest that the novel analysis can be successively applied on different hybrid perovskite materials, too.}, subject = {Bipolarons; Ionicity factor; Large polarons; Perovskite solar cells}, language = {en} } @article{IjiomaIjiomaHerd2025, author = {Ijioma, Uche Dickson and Ijioma, Michael and Herd, Rainer}, title = {Assessment of quality and health risks in drinking water sources in Aba, Nigeria}, series = {Water Practice \& Technology}, volume = {20}, journal = {Water Practice \& Technology}, number = {4}, publisher = {IWA Publishing}, address = {London}, issn = {1751-231X}, doi = {10.2166/wpt.2025.042}, pages = {937 -- 953}, year = {2025}, abstract = {Unregulated urban activities significantly impact drinking water quality in many developing communities. This study applied a Water Safety Plan (WSP) to assess water quality, health risks, and the effects of harmful environmental practices in Aba, Nigeria, where the waterworks infrastructure is dysfunctional. The datasets used were collected from physicochemical, chemical, and bacteriological analyses of drinking water samples (natural sources: n ¼ 60, secondary sources: n ¼ 19), along with household surveys (120) and semi-structured expert interviews (10). Findings revealed that groundwater is the primary drinking water source, with most facilities classified as improved sources. However, poor sanitation practices, particularly improper septage disposal, were identified as major contributors to water contamination. Risk assessments based on hazard quotient/index (HQ/HI < 1) indicated low health concerns overall, but higher risks were observed in areas with intense urbanization. Bacteriological analysis showed severe contamination in the Aba River, while sachet water posed significant health risks due to the presence of E. coli and total coliform bacteria in some cases. Despite existing environmental policies in Nigeria, weak institutional frameworks and ineffective local governance hinder effective water quality management. Addressing these challenges requires stronger regulatory enforcement and locally adapted strategies to ensure safe drinking water access.}, subject = {Drinking water quality; Hazard quotient/index; Microbial quality; Nigeria; Water safety plan}, language = {en} } @misc{OPUS4-7051, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2025,26 (30.06.2025)}, doi = {10.26127/BTUOpen-7051}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70519}, year = {2025}, abstract = {Fachspezifische Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Umweltwissenschaften (B.Sc.) vom 30. Juni 2025}, language = {de} } @misc{OPUS4-7049, title = {Amtliches Mitteilungsblatt der BTU Cottbus-Senftenberg, 2025,25 (30.06.2025)}, doi = {10.26127/BTUOpen-7049}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70499}, year = {2025}, abstract = {1. Zweite {\"A}nderungssatzung zur Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Medizintechnik (B.Eng.) vom 30. Juni 2025 2. Lesefassung: Fachspezifische Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Medizintechnik (B.Eng.) vom 04. Oktober 2022 (AMbl. 23/2022) i. d. F. der Zweiten {\"A}nderungssatzung zur Pr{\"u}fungs- und Studienordnung f{\"u}r den Bachelor-Studiengang Medizintechnik (B.Eng.) vom 30. Juni 2025}, language = {de} } @phdthesis{Katzer2024, author = {Katzer, Christian}, title = {Modellierung und Optimierung des Verbrennungszustands anhand der dynamischen Flammenstabilit{\"a}t am Beispiel eines Kohlebrenners}, doi = {10.26127/BTUOpen-7040}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:co1-opus4-70402}, school = {BTU Cottbus - Senftenberg}, year = {2024}, abstract = {Im Rahmen der vorliegenden Arbeit wurde eine modellgest{\"u}tzte Prozessoptimierung an einer 400 kWth Verbrennungsanlage entwickelt, mit dem Ziel, die Betriebsoptimierung in Echtzeit zu realisieren. Die Grundlage bildet ein physikalisch-netzwerkgekoppeltes Modell der Verbrennungsanlage, das mit einem neuronalen Netzwerk zur Analyse der Betriebsdaten des Brenners hinsichtlich der Verbrennungsstabilit{\"a}t kombiniert wird. Der Optimierungsalgorithmus basiert auf einer Zielfunktion, die die Flammenstabilit{\"a}t und den Luftanteil ber{\"u}cksichtigt. Im {\"U}berblick zum aktuellen Stand der Technik wurde zun{\"a}chst die Problemstellung der Flammenstabilit{\"a}t auf das untersuchte Feststoff-Brennersystem {\"u}bertragen und der erforderliche Zugriff auf physikalisch-chemische Parameter der Flammenzone zur Zustandsbewertung des Systems erl{\"a}utert. Das Modell wurde auf der Grundlage experimenteller Untersuchungen am Gas-/Kohle-Kombibrenner des Verbrennungsversuchsstands VVS400 an der BTU Cottbus-Senftenberg entwickelt. Dabei wurden verschiedene Messmethoden zur Erfassung instation{\"a}rer Verbrennungseffekte {\"u}berpr{\"u}ft. Insbesondere erwies sich die UV-Flammenstrahlung und die Chemolumineszenz des OH*-Radikals als geeignet f{\"u}r die Bewertung der prim{\"a}ren Verbrennungszone. Diese Methodik erm{\"o}glichte es, das Verbrennungsverhalten zu analysieren und ein Modell zur Bewertung der Flammenstabilit{\"a}t zu entwickeln. Eine wesentliche Erkenntnis war, dass das Flammenw{\"a}chtersignal, unterst{\"u}tzt durch eine Frequenzanalyse, eine zuverl{\"a}ssige Datenquelle f{\"u}r die Modellierung und Optimierung des Brennersystems darstellt. Das entwickelte Bewertungssystem erm{\"o}glicht eine pr{\"a}zise Beurteilung des Verbrennungszustands sowie die Berechnung von Optimierungsmaßnahmen, die als Handlungsempfehlungen f{\"u}r den Brennerbetrieb dienen. Im weiteren Verlauf wurde ein quasistation{\"a}res Modell entwickelt, das physikalische Modellierungsans{\"a}tze mit neuronalen Netzwerken kombiniert, um komplexe Betriebsparameter abzubilden. Diese Modellierung zeigte eine hohe {\"U}bereinstimmung mit den experimentellen Messdaten und bildete somit eine effektive Grundlage f{\"u}r die Prozessoptimierung. Das Optimierungsverfahren basiert auf dem Pattern-Search-Verfahren, wobei die Flammenstabilit{\"a}t und der Luftanteil als Optimierungsziele definiert wurden. Die Ergebnisse der Untersuchungen belegen, dass das integrierte Verfahren zur Flammenbewertung und -optimierung erfolgreich zur Echtzeit-Analyse und Steuerung von Brennersystemen eingesetzt werden kann. Anhand von Validierungsmessungen wird das Potenzial zur Modellierung und Optimierung des Verbrennungszustands auf Basis der dynamischen Flammenstabilit{\"a}t am Beispiel eines Kohlebrenners diskutiert. Das vorgestellte Verfahren soll als Hilfsmittel f{\"u}r Brennersysteme dienen, um den steigenden Anforderungen an Emissionsgrenzen und Lastflexibilit{\"a}t gerecht zu werden. Die {\"U}bertragbarkeit vom experimentellen Rahmen auf die Industrieanwendung wird diskutiert, und weiterer Entwicklungsbedarf abgeleitet.}, subject = {Verbrennung; Flammenstabilit{\"a}t; Optimierungsmodell; Combustion; Combustion stability; Optimization model; Neuronales Netzwerk; Neural network; Verbrennung; Flammenstabilit{\"a}t; Prozessoptimierung; Modell; Neuronales Netz}, language = {de} }