cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Screening of Fungi Producing Ligninolytic Enzymes
Creators: name: Zecarias Ghebreslasie
name: Duangporn Premjet
name: Siripong Permjet
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: Phenol red, Azure B and RBBR, Decolorization, Fungi

description: 21 (Supplement), 21, KKU Research Journal
The Value of Remotely Sensed Information: The Case of a GRACE-Enhanced Drought Severity Index
Creators: name: Bernknopf, Richard
name: Brookshire, David
name: Kuwayama, Yusuke
name: Macauley, Molly
name: Rodell, Matthew
name: Thompson, Alexandra
name: Vail, Peter
name: Zaitchik, Benjamin
Publisher: name: AMS
Year: 2018
Subjects: subject: Adaptive models
subject: Statistics
subject: FOS: Mathematics
subject: Risk assessment
subject: Regional models
subject: Bayesian methods

description: A decision framework is developed for quantifying the economic value of information (VOI) from the Gravity Recovery and Climate Experiment (GRACE) satellite mission for drought monitoring, with a focus on the potential contributions of groundwater storage and soil moisture measurements from the GRACE data assimilation (GRACE-DA) system. The study consists of (i) the development of a conceptual framework to evaluate the socioeconomic value of GRACE-DA as a contributing source of information to drought monitoring; (ii) structured listening sessions to understand the needs of stakeholders who are affected by drought monitoring; (iii) econometric analysis based on the conceptual framework that characterizes the contribution of GRACE-DA to the U.S. Drought Monitor (USDM) in capturing the effects of drought on the agricultural sector; and (iv) a demonstration of how the improved characterization of drought conditions may influence decisions made in a real-world drought disaster assistance program. Results show that GRACE-DA has the potential to lower the uncertainty associated with the understanding of drought and that this improved understanding has the potential to change policy decisions that lead to tangible societal benefits.
Handreichung für den Begutachtungsprozess der DHd-Jahrestagungen
Creators: name: Burghardt, Manuel
name: Dieckmann, Lisa
name: Guhr, Svenja
name: Reiter, Nils
name: Scholger, Walter
name: Steyer, Timo
name: Trilcke, Peer
name: Wuttke, Ulrike
Publisher: name: Zenodo
Year: 2022
Subjects: Reviewing
Digital Humanities

description: Die vorliegende, von der Task Force »Optimizing Peer Review« erarbeitete und vom Programmkomitee verabschiedete Handreichung gibt Empfehlungen für Gutachter:innen, Hinweise für die Begutachtung sowie weiterführende Erklärungen zu den Begutachtungskritierien im Rahmen der Jahrestagungen des Verbandes »Digital Humanities im deutschsprachigen Raum e.V.« (DHd).
Dynamic impacts of U.S. energy development on agricultural land use
Creators: name: Fitzgerald, Timothy
name: Kuwayama, Yusuke
name: Olmstead, Sheila
name: Thompson, Alexandra
Publisher: name: ELSEVIER
Year: 2019
Subjects: Bakken Shale
North Dakota
Natural gas wells
Land-use change
Agriculture
Hydraulic fracturing
Oil wells

description: The land-use impacts of the rapid expansion of U.S. oil and gas infrastructure since the early 2000s are a focus of local, state, and federal policymakers. Agriculture is the dominant land use in many areas with active energy development. Prior studies find that energy development displaces agriculture and assume that this effect is both permanent and homogeneous. We take a novel approach, analyzing landowners' capacity to both anticipate displaced production prior to the drilling of oil and gas wells, and reclaim some land once wells are in production. Using North Dakota's Bakken Shale as a case study, we merge agricultural land-use data from 2006 to 2014 with locations and drilling dates of oil and gas wells. We then use panel fixed-effects models to estimate the spatially- and intertemporally-heterogeneous effects of additional wells on agricultural land. We find that drilling is associated with reduced surrounding crop cover and increased fallow acreage. Importantly, the duration of these effects differs across agricultural land covers, and effects are in some cases temporary. Our analysis suggests that overlooking dynamic land use impacts may overestimate the cumulative net impact of oil and gas development on agricultural land uses by up to a factor of two.
Purification and Characterization of Heparin Degrading Enzyme by isolated bacteria from brackish sediment
Creators: name: Prapasri Khanitchadecha
name: Waranyoo Pulsawat
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: Heparinase,Heparin,Enzyme purification,Aeromonas sp

description: 44 (Supplement), 21, KKU Research Journal
Polyhydroxyalkanoate (PHA) Synthesis by Newly Bacterial Isolates using Non-detoxified Rice Husk Hydrolysate
Creators: name: Varavut Tanamool
name: Wichai Soemphol
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: PHA,Rice husk,RSM

description: 43 (Supplement), 21, KKU Research Journal
Preparation of Vinegar from Coconut Water Using Baker's Yeast and Acetobacter aceti TISTR 102 Starter Powder
Creators: name: Ngoc, Thao Ngan Trinh
name: Payap Masniyom
name: Jaruwan Maneesri
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: vinegar,coconut water,baker's yeast,A. aceti, starter powder

description: 41 (Supplement), 21, KKU Research Journal
title: Results of the project "Purification and purity control of CO2 gas in power cycles - CiCiMe"
Creators: name: Berka, Jan
name: Hlinčík, Tomáš
name: Dočkal, Karel
name: Vávrovec, Jiří
name: Hásek, Jan
name: Halodová, Patricie
name: Vágenknechtová, Alice
name: Tekáč, Viktor
name: Vít, Jan
name: Sobek, Kamil
name: Rozumová, Lucia
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: sCO2 experimental loop
subject: sCO2 autoclave
subject: CO2 purifiacation
subject: sCO2 analytical
subject: purity control
subject: gas chromatography
subject: 620

description: The project ‘Purification and purity control of CO2 gas in power cycles’ (acronym CiCiMe) has been solved since the year 2019 and is going to be finished in 2025. Within the project, the information concerning possible impurities in CO2 and sCO2 power systems was summarised. On the basis of the information, the purification and purity control system for the sCO2 power system was proposed. The methods of impurities separation were tested and verified. The CO2 purification unit for the sCO2 experimental loop was designed and is under construction. Finally, the autoclave for material testing in sCO2 was constructed, and several tests were performed in the autoclave. The last test was carried out at a temperature of 300 °C and a total pressure of 25 MPa. After some improvements, the device is planned to be able to operate long-term at a temperature of 700 °C. The primary results of the CiCiMe project will be introduced at the conference.
description: Conference Proceedings of the European sCO2 Conference6th Edition of the European Conference on Supercritical CO2 (sCO2) for Energy Systems: April 09–11, 2025, Delft, The Netherlands, p. 285
Preparation the Substrate from Palmyra Palm Fruit by Candida stellimalicola Fermentation for Acetic Acid Production
Creators: name: Siriporn Artnarong
name: Payap Masniyom
name: Jaruwan Maneesri
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: palmyra palm fruit,ethanol,Candida stellimalicola,glucose,ammonium sulfate

description: 42 (Supplement), 21, KKU Research Journal
title: Energy and Exergy Performance of Hydrogen Turbine Coupled with Partial Heating Supercritical Carbon Dioxide Cycle
Creators: name: Muhammad, Hafiz
name: Jo, Seunghyeon
name: Kim, Beomjoo
name: Lee, Young
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: Hydrogen turbine
subject: Combine cycle
subject: Partial heating cycle
subject: Energy and exergy analysis
subject: 620

description: The development of hydrogen turbines combine cycle is crucial for advancing the hydrogen economy. However, the performance of the combined cycle is significantly influenced by the selection of an optimal bottoming cycle. Among various options, the supercritical carbon dioxide (sCO₂) cycle has emerged as a promising candidate due to its superior thermal efficiency compared to traditional steam cycles. This study investigates the performance of hydrogen gas turbines integrated with an sCO₂ bottoming cycle. The Kawasaki M1A-17 turbine was selected as the gas turbine and the turbine model was corroborated by comparing the results with the KAWASAKI catalogue. The partial heating cycle layout of the sCO₂ was selected as the bottoming cycle, since the partial heating cycle has been shown to outperform other configuration in terms of waste heat recovery. The analysis employed energy and exergy perspective to provide a comprehensive assessment of each configuration. The exergy analysis revealed the optimum turbine inlet temperature is 400°C for the inlet pressure of 210 bar. At 400°C and a compressor inlet temperature of 35°C, the sCO2 cycle produces net power of 834.31 kW. At these conditions, the H2 turbine only efficiency is 28.8% while the combine cycle offers an efficiency of 41.01%. The sCO2 cycle performance improves considerably at cooler temperatures. For a compressor inlet temperature of 15°C, the sCO2 can produce net power of 931 kW and the 1.5%-pt improvement in the combined cycle efficiency can be observed.
description: Conference Proceedings of the European sCO2 Conference6th Edition of the European Conference on Supercritical CO2 (sCO2) for Energy Systems: April 09–11, 2025, Delft, The Netherlands, p. 406
Critical Factors that Underlay Cue Interactions in Human Spatial Navigation
Creators: name: Llave, Estibaliz Herrera de la
Publisher: name: University of Leicester
Year: 2022
Subjects: Uncategorized

description: Since the formalisation of the idea of cognitive maps (O’Keefe & Nadel, 1978), numerous experiments have tested whether cue competition phenomena are observed in spatial navigation. Different authors (Gallistel, 1990) suggested that learning about the geometric properties of an environment is processed in an encapsulated module, which prevents boundary information from interacting with non-geometric sources of information (e.g., beacons or landmarks) in wayfinding or reorientation studies. This suggestion has led to the idea that cue competition between landmarks and geometric information should not be observed. Numerous experiments have tested this prediction, and the findings have varied largely, leading to intense theoretical debates about whether spatial cognition follows similar learning principles as other tasks. If this was the case, then cue competition should be observed in spatial learning tasks (Pearce, 2009). However, little is known about what are the factors under which sometimes cue interactions are found and others are not. This thesis builds on Urcelay’s (2017) previous work which suggests that several factors, such as contingency, relative stimulus duration and contiguity, may determine cue competition along both temporal and spatial dimensions. This is an important question because it begins to address the aforementioned empirical discrepancies. Contiguity and cue duration effects were exhaustively studied together with other factors using virtual learning environments. Overall, the present work provides evidence that spatial contiguity is a critical determinant of cue competition, and that relative stimulus duration determines the strength of cue competition under strong contiguity. Finally, a fixed starting location and extended training enhance the likelihood of observing cue competition. This was observed across different parametric variations, which suggests that these results are not restricted to a specific set of parameters or learning domains. Instead, the present results should broaden the number of variables that should be taken into account when investigating competition phenomena.
title: Experimental and numerical study of supercritical CO2 cooler
Creators: name: Petruccelli, Giuseppe
name: Turunen-Saaresti, Teemu
name: Serret, Damien
name: Grönman, Aki
name: Conrozier, Aurélien
name: Momeni Dolatabadi, Amir
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: heat transfer
subject: supercritical CO2
subject: printed circuit heat exchanger
subject: gas cooler
subject: CFD
subject: 620

description: Heat exchangers are major components that significantly influence the performance and size of industrial processes. Supercritical CO2 (sCO2) is a highly promising working fluid for various applications due to its potential to reduce equipment size, lower environmental impact, and enhance performance. The properties of CO2 near the critical point exhibit significant variations, making it particularly favorable for heat transfer. As part of the Horizon 2020 DESOLINATION (DEmonstration of concentrated SOLar power coupled wIth advaNced desAlinaTion system in the gulf regION) project, a printed circuit heat exchanger (PCHE) for an sCO2 power cycle was designed, additive manufactured, and tested. Computational fluid dynamics (CFD) simulations using the SST k–ω turbulence model and real-gas equation of state were used to analyze the heat transfer performance and friction losses of the PCHE in detail. By combining experimental measurements with numerical simulations, this study provides a comprehensive evaluation of the thermo-hydraulic performance of sCO2 near the pseudo-critical region under various operating conditions (73.78 < p < 92.32 bar, 307.02
description: Conference Proceedings of the European sCO2 Conference6th Edition of the European Conference on Supercritical CO2 (sCO2) for Energy Systems: April 09–11, 2025, Delft, The Netherlands, p. 296
FAILS: A Framework for Automated Collection and Analysis of LLM Service Incidents
Creators: name: Battaglini-Fischer, Sándor
name: Srinivasan, Nishanthi
name: Szarvas, Bálint László
name: Chu, Xiaoyu
name: Iosup, Alexandru
Publisher: name: arXiv
Year: 2025
Subjects: subject: Performance (cs.PF)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Large Language Model (LLM) services such as ChatGPT, DALLE, and Cursor have quickly become essential for society, businesses, and individuals, empowering applications such as chatbots, image generation, and code assistance. The complexity of LLM systems makes them prone to failures and affects their reliability and availability, yet their failure patterns are not fully understood, making it an emerging problem. However, there are limited datasets and studies in this area, particularly lacking an open-access tool for analyzing LLM service failures based on incident reports. Addressing these problems, in this work we propose FAILS, the first open-sourced framework for incident reports collection and analysis on different LLM services and providers. FAILS provides comprehensive data collection, analysis, and visualization capabilities, including:(1) It can automatically collect, clean, and update incident data through its data scraper and processing components;(2) It provides 17 types of failure analysis, allowing users to explore temporal trends of incidents, analyze service reliability metrics, such as Mean Time to Recovery (MTTR) and Mean Time Between Failures (MTBF);(3) It leverages advanced LLM tools to assist in data analysis and interpretation, enabling users to gain observations and insights efficiently. All functions are integrated in the backend, allowing users to easily access them through a web-based frontend interface. FAILS supports researchers, engineers, and general users to understand failure patterns and further mitigate operational incidents and outages in LLM services. The framework is publicly available on https://github.com/atlarge-research/FAILS.
Supplementary document for Video super-resolution for single-photon LIDAR - 6185681.pdf
Creators: name: Mora, German
name: Scholes, Stirling
name: Ruget, Alice
name: Henderson, Robert
name: Leach, Jonathan
name: Gyongy, Istvan
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Computer Vision

description: Supplemental Document
title: Numerical Investigation of Header Design Parameters for Enhanced Flow Distribution in Minichannel Printed Circuit Heat Exchangers for Supercritical Carbon Dioxide Applications
Creators: name: Awais, Ahmad
name: Hofer, Markus
name: Buck, Michael
name: Tioual-Demange, Sarah
name: Starflinger, Jörg
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: Printed Circuit Heat Exchangers
subject: Conjugated Heat Transfer
subject: Header Design
subject: Flow Maldistribution
subject: Supercritical Carbon Dioxide
subject: Minichannel Heat Exchangers
subject: 620

description: Minichannel printed circuit heat exchangers (PCHEs) are commonly utilized in supercritical CO2 (sCO2) power cycles. In this study, an experimental single plate PCHE with various header configurations is investigated in terms of flow maldistribution using computational fluid dynamics (CFD) techniques. A series of header optimization simulations with different mass flow rates, inlet/outlet configurations, and header sizes are performed and analyzed. The numerical model of this PCHE is set up and solved with ANSYS-CFX. The variation in thermophysical properties of sCO2 was incorporated into the numerical model via real gas property data. Additionally, the computed results for temperature distribution i.e., maximum hotspot temperatures and pressure drop were validated with experimental data, showing a good agreement with a maximum discrepancy of 8.6%. The results from this study indicated that optimizing inlet and outlet positions reduced the maldistribution factor (MDF) by 34% at 40 g/sec and 29% at 90 g/sec, as compared to the baseline configuration of the PCHE. Increasing the header area ratio further reduced the MDF by 51% at 40 g/sec and 48% at 90 g/sec, resulting in uniform temperature distribution and effective mitigation of local hotspots. Furthermore, the suggested header configuration also minimized hot and cold stream mixing inside the collector header which can significantly reduce thermal stresses, extending the life span of PCHEs.
description: Conference Proceedings of the European sCO2 Conference6th Edition of the European Conference on Supercritical CO2 (sCO2) for Energy Systems: April 09–11, 2025, Delft, The Netherlands, p. 327
Inverse Gravity in Higher Dimensions: A Hypothetical Link Between Quantum Gravity and Dark Energy
Creators: name: Raikasniemi, Alex
Publisher: name: Zenodo
Year: 2025
Subjects: quantum gravity
higher dimensions
inverse gravity
cosmology
general relativity
dark energy

description: This paper proposes that gravitational interactions may behave inversely in higher-dimensional structures, leading to repulsive gravitational effects at cosmological scales. Authored by Alex Raikasniemi
Characterizing the ectomycorrhizal fungal community of whitebark pine (Pinus albicaulis) in Mount Revelstoke and Glacier National parks
Creators: name: Southam, Hanno
Publisher: name: The University of British Columbia
Year: 2021

description: Whitebark pine (WBP) (Pinus albicaulis Engelm.) is an endangered, high-elevation tree species and an obligate ectomycorrhizal mutualist. The ectomycorrhizal (ECM) fungal community with which it associates is central to its recovery. Previous efforts to describe this community have been focused in a single region of the species range (Greater Yellowstone Ecosystem) and relied on above ground sporocarp (mushroom) surveys. This project built upon that work by using NextGeneration sequencing of the ITS2 region to describe the WBP ECM fungal community in Mount Revelstoke and Glacier National parks of Canada. Samples were taken from root tips and adjacent soil of mature trees, naturally regenerated seedlings and planted seedlings. The major ECM lineages previously recorded with WBP were confirmed at our project site: generalist ascomycetes (Cenococcum, Wilcoxina), Agaricales (Cortinarius, Inocybe, Tricholoma, Hygrophorus), Atheliales (Piloderma, Amphinema, Tylospora), Suilloids (Suillus, Rhizopogon), Russuales (Lactarius, Russula) and Theleporales (Pseudotomentella, Tomentella). Twenty-one new species and two new genera were identified bringing the number of recorded WBP ECM associates to twenty-two genera and between fifty and fifty-five species. Compared with previous studies, a shift in the dominant ecological fungal guilds towards generalist associates was detected and attributed to the mixed conifer composition of the sites sampled. Distinct communities were detected on naturally regenerated and planted trees. Planted trees had lower colonization and diversity and lacked native ECM mycota. The ECM taxa identified here should be useful in the selection of planting sites, assessments of stand health and potential inoculation of planted seedlings. The assessment of planted seedlings reiterates the importance of selecting planting sites that support ECM development. This work makes a significant contribution to understanding the ECM fungal community and ecology of WBP.
title: A case study of using sCO2 equipment in different geothermal energy systems: AGS, EGS and CPG
Creators: name: Esmaeilpour, Morteza
name: Schifflechner, Christopher
name: Jurado, Nicolas
name: Onishi, Tsubasa
name: Pokras, Daniel
name: de Reus, Jasper
name: Köhlert, Sebastian
name: Saar, Martin
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: CO2-based Geothermal Systems
subject: CO­2-Plume Geothermal
subject: Power Plant Technology
subject: Techno-economic Analysis
subject: Levelized Cost of Electricity
subject: 620

description: Climate change necessitates innovative solutions for producing clean energy and decreasing atmospheric CO2 levels. Using CO2 as a working fluid in geothermal applications is a smart strategy to achieve this goal, as it has the potential to outperform conventional water-driven geothermal systems in terms of power produced, and for some cases, simultaneously increase the amount of CO2 that can be geologically sequestered. Power plant technology plays an important role in maximizing the value of geothermal resources. This is achieved through versatile power plant components that, barring large differences in CO2 purity, can operate across various geothermal systems. This research compares the use of similar power plant components and technologies across various types of CO2-based geothermal energy systems: hydrothermal systems with CO2 as a secondary working fluid, Advanced Geothermal Systems (AGS), Enhanced Geothermal Systems (EGS), and CO2-Plume Geothermal (CPG) systems. After providing ranges in possible operating conditions of these systems, the study employs TANGO (Techno-economic Analysis of Geo-energy Operations) to calculate the extracted energy and the Levelized Cost of Electricity (LCOE) for an example AGS, EGS, and CPG project, each with 10 MWe installed capacity. The findings indicate that CO2 is an effective geothermal working fluid and that most CO2 equipment can be used across the different geothermal systems. Given the extensive drilling required for AGS, LCOEs of CPG and EGS were found to be more competitive at current well construction costs.
description: Conference Proceedings of the European sCO2 Conference6th Edition of the European Conference on Supercritical CO2 (sCO2) for Energy Systems: April 09–11, 2025, Delft, The Netherlands, p. 212
VSL-Gravity in light of PSR B1913+16 Full Data Set: Upper limits on graviton mass and its theoretical consequences
Creators: name: Bonilla, Alexander
name: Santoni, Alessandro
name: Nunes, Rafael C.
name: Said, Jackson Levi
Publisher: name: arXiv
Year: 2025
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Very Special Linear Gravity (VSL-Gravity) is an alternative model of linearized gravity that incorporates massive gravitons while retaining only two physical degrees of freedom thanks to gauge invariance. Recently, the gravitational period-decay dynamics of the model has been determined using effective field theory techniques. In this study, we conduct a comprehensive Bayesian analysis of the PSR B1913+16 binary pulsar dataset to test the predictions of VSL-Gravity. Our results place a 95\% confidence level upper bound on the graviton mass at $m_g \lesssim 10^{-19} \, \text{eV}/c^2$. Additionally, we observe a significant discrepancy in the predicted mass of one of the binary's companion stars. Lastly, we discuss the broader implications of a non-zero graviton mass, from astrophysical consequences to potential cosmological effects.
The Paper-and-Code Bundle Concept in Atmospheric Radiation Science
Creators: name: Korkin, Sergey
name: Sayer, Andrew
name: Ibrahim, Amir
name: Lyapustin, Alexei
Publisher: name: AMS
Year: 2024
Subjects: The Paper-and-Code Bundle Concept in Atmospheric Radiation Science

description: 104th ANNUAL MEETING 28 Jan - 1 Febrauary 2024 Baltimore, MD & Online
description: The modern workforce is under relentless pressure to constantly acquire new skills and knowledge necessary to get the job done. Atmospheric science is not exempt. A typical practitioner must not only understand atmospheric physics (which alone has many branches) and its underlying mathematics (sophisticated), but also details of numerical techniques, and possess basic software engineering skills (for code development). Many classic books and papers in all branches of atmospheric and computer science are available. But that is partially the problem: there are too many. When switching between branches of atmospheric science (due to collaboration or change of projects), nobody has time for deep immersion in relevant literature. Also, successful completion of a project still requires understanding at the level of code developer (because using “black boxes” and “spaghetti codes” is unprofessional, risky, and counterproductive). Many of these theoretical papers are not written from the point of view of turning theory into workable, maintainable code. In this talk we discuss two papers describing numerical simulation of two fundamental physical processes in the atmosphere: multiple scattering of solar light, and absorption by atmospheric trace gases. Following the format of “Numerical Recipes” by Press et al., our papers bundle small pieces of necessary theory with corresponding snippets of code. These are arranged in an order that is natural for code development, which is often opposite of the natural order for laying out the theoretical basis. The first paper has been published in 2022, while the second is a work in progress which we intend to finish in 2024. The goal of both papers is to simplify the transfer of knowledge from seniors to juniors, and exchange skills between experts from different branches of Earth science. The codes are open source to be a learning resource available to all.
title: Comparison of sCO2, CO2 mixture, and steam Rankine cycles for CSP with components sizing: implications for cost and flexibility
Creators: name: Naumov, Vladimir
name: Gedik, Eylül
name: Petersen, Nils
name: Di Marcoberardino, Gioele
name: Iora, Paolo
name: Wirsum, Manfred
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: Concentrated solar power
subject: CO2 mixture
subject: Rankine cycle
subject: transcritical cycle
subject: components
subject: 620

description: While all commercial concentrating solar power (CSP) plants with central receivers are equipped with the steam Rankine power cycle, supercritical CO2 (sCO2) cycles are seen as a promising advancement. They offer higher efficiencies and more compact turbomachinery at high temperatures compared to the steam Rankine cycle, however, sCO2 cycles face challenges related to high pressures and temperatures, which increase material demands and the mass and cost of heat exchangers. As the need for flexible electricity generation grows, the thermal inertia of the power block, linked to its metal mass, becomes increasingly important. This study examines and compares the component sizes, material usage, and economic and flexibility impacts of sCO2, CO2 mixtures, and steam Rankine cycles for commercial-scale CSP applications. All cycles are designed with the same thermal energy input, keeping the solar field and thermal storage constant. Heat exchanger designs, including primary heaters, recuperators, and air-cooled units, follow the ASME Code and are modeled using Aspen Exchanger Design & Rating. Since no commercial sCO2 turbines exist at this scale, turbine design parameters are estimated using a developed simplified approach. Results are compared with existing studies to assess component-level and system-level implications in terms of cost, performance, and flexibility.
description: Conference Proceedings of the European sCO2 Conference6th Edition of the European Conference on Supercritical CO2 (sCO2) for Energy Systems: April 09–11, 2025, Delft, The Netherlands, p. 244
Supplementary document for Efficient collimated multi-GeV γ-ray generation along solid surfaces - 6185705.pdf
Creators: name: Zhu, Xinglong
name: Liu, Wei-Yuan
name: Chen, Min
name: Weng, Suming
name: Wu, Dong
name: Sheng, Zheng-Ming
name: Zhang, Jie
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Supplementary Material
Isolation and Production of Polyhydroxybutyrate (PHB) from Isolated Strain Bacillus sp. using Crude Glycerol as a Carbon Source
Creators: name: Phakphimol Piwpan
name: Adisak Jaturapiree
name: Phimchanok Jaturapiree
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: Bacillus,biodiesel,crude glycerol,polyhydroxybutyrate,production

description: 40 (Supplement), 21, KKU Research Journal
Food-based domestic violence and anemia among women in sexual unions in Nigeria: the effect of urbanization
Creators: name: Ajoseh, Seun Mauton
name: Sifat, Ridwan Islam
name: Whesu, John Tasheyon
Publisher: name: Springer Nature
Year: 2024
Subjects: Food insecurity
Anemia
Rural–urban
Sexual union
Domestic violence
Urbanization

description: In 2019, 1.74 billion people worldwide had anemia. In Nigeria, women of reproductive age are the most affected. Domestic violence affects the anemia prevalence, but few studies have examined the influence of urbanization on women in heterosexual unions (currently married, and cohabiting between). Using the social determinants of health framework, we argue that food-based violence and anemia vary among women residing in rural and urban areas. We used the Chi-square test and logistic regression to analyze the 2018 Nigeria Demographic and Health Survey records (n?=?10,499). The study showed that anemia occurs more among women in rural (66%) than in urban (34%) areas. In rural areas, anemia was 29% higher among women who approved food-based domestic violence (OR: 1.29, CI 1.15–1.57) than those who did not. In urban areas, food-based domestic violence was not significantly associated with anemia. This study emphasizes the urgent need for culturally sensitive maternal health interventions aimed at re-orienting individuals and families on violence in rural areas.
Production of Dextran by Leuconostoc Mesenteroides TISTR 053 in Fed Batch Fermentation
Creators: name: Piyarat Nuwan
name: Phakphimol Piwpan
name: Adisak Jaturapiree
name: Phimchanok Jaturapiree
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: dextran,fed batch fermentation,Leuconostoc,production

description: 39 (Supplement), 21, KKU Research Journal
Bibliographie der Geschichte, Landes- und Volkskunde von Stadt und Kanton Zürich: 1. Oktober 1924 bis 30. September 1925
Creators: name: Stauber, Emil
Publisher: name: Buchdruckerei Arnold Kopp & Co.
Year: 1925
Subjects: subject: 010 Bibliografie
subject: Kanton Zürich
subject: Zürich
subject: Bibliografie
subject: Geschichte
subject: Landeskunde
subject: Volkskunde

description: Separatdruck aus dem "Zürcher Taschenbuch" auf das Jahr 1926.
A Comprehensive Survey and Tutorial on Smart Vehicles: Emerging Technologies, Security Issues, and Solutions Using Machine Learning
Creators: name: Ahmad, Usman
name: Han, Mu
name: Jolfaei, Alireza
name: Jabbar, Sohail
name: Ibrar, Muhammad
name: Erbad, Aiman
name: Song, Houbing
name: Alkhrijah, Yazeed
Publisher: name: IEEE
Year: 2024
Subjects: artificial neural networks
Automotive engineering
deep learning
Intelligent sensors
Wireless communication
connected and autonomous vehicles
security attacks
defence systems
Sensors
Smart vehicles
Accidents
cybersecurity
Industries
Security
UMBC Security and Optimization for Networked Globe Laboratory ?(SONG Lab)
machine learning
artificial intelligence

description: According to research, the vast majority of road accidents (90%) are the result of human error, with only a small percentage (2%) being caused by malfunctions in the vehicle. Smart vehicles have gained significant attention as potential solutions to address such issues. In the future of transportation, travel comfort and road safety will be ensured while also offering several value-added services. The automotive industry has undergone a significant transformation through the use of emerging technologies and wireless communication channels, resulting in vehicles becoming more interconnected, intelligent, and safe. However, these technologies and communication systems are susceptible to numerous security attacks. The objective of this paper is to present a comprehensive overview of the smart vehicle’s architecture, encompassing emerging technologies and security challenges and solutions associated with smart vehicles. There has been a significant surge in the utilization of machine learning techniques in smart vehicles. We categorically discuss common security measures, including machine learning and deep learning based solutions that have been mentioned in the literature and implemented against security threats on smart vehicles. This paper has also been titled a tutorial due to its layout, which begins with covering preliminary knowledge, terminologies, and encompassing technologies required to comprehend smart vehicles. Following this, the paper addresses the overall challenges associated with smart vehicles and then focuses on security issues. In terms of solutions, the paper discusses overall solutions to security issues in smart vehicles before delving into a specific solution based on machine learning and deep learning.
title: The Managers and Public Hospital Performance
Creators: name: Muñoz, Pablo
name: Otero, Cristóbal
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: 610
subject: 330

description: We study whether the quality of managers can affect public service provision in the context of public health. Using novel data from public hospitals in Chile, we show how the introduction of a competitive recruitment system and better pay for public hospital CEOs reduced hospital mortality by 8%. The effect is not explained by a change in patient composition. We find that the policy changed the pool of CEOs by displacing doctors with no management training in favor of CEOs who had studied management. Productivity improvements were driven by hospitals that recruited higher quality CEOs.
description: CINCH working paper series, vol. 2025, no. 02
Cloning of 1 Fructan: Fructan Fructosyltransferase Gene and Expression of Recombinant 1 Fructan: Fructan Fructosyltransferase in Yeast
Creators: name: Budsaraporn Ngampanya
name: Kriengsak Boonchoo
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: Recombinant 1- FF,Helianthus tuberosus L.,Pichia pastoris X-33,Fructooligosaccharides

description: 38 (Supplement), 21, KKU Research Journal
title: Development of Three-Dimensional Melt Flow Systems in the Hot Runner Manifold Block Based on Automated CFD-optimization and Experimental Testing
Creators: name: Schulz, Lucas
name: Wurzbacher, Simon
name: Bamberger, Johannes
name: Kruppa, Stefan
name: Schiffers, Reinhard
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2023
Subjects: subject: Injection Molding
subject: Additive Manufacturing
subject: Hot Runner
subject: CFD
subject: Simulation
subject: Optimization
subject: 620

description: The hot runner system is supplied with the plastic melt prepared by the injection molding machine from the machine nozzle over the sprue bushing. It then guides the melt via the manifold block and the hot runner nozzles to the gate into the cavity. The aim of the hot runner design is to ensure that all cavities are supplied with the same melt quality, filling and compression pressures and filling speeds without damaging the melt along the way. The distributor block therefore plays a key role in this process, as it is responsible not only for melt transfer but also for distributing the melt to the individual cavities. Conventional manufacturing methods cannot exploit the full potential of hot runner systems because of limitations in the degrees of freedom in the layout of the melt channels. This paper therefore investigates the additive manufacturing approach for hot runner manifolds. For this purpose, different hot runner geometries are developed and analyzed based on computational fluid dynamics and subsequently validated by experimental testing. The results show an advantage of the additive geometries, especially regarding the cycles required for purging and the shear stress of the melt.
Chemical Hazards Associated with Instant Black Rice Beverage
Creators: name: Hour Phann
name: Juntanee Uriyapongson
name: Inteaz, Alli
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: Instant beverage,HACCP plan,chemical hazards,validation,and black rice

description: 36 (Supplement), 21, KKU Research Journal
Hybrid Kinetic Modeling of the Magnetosheath Impulsive Plasma Cloud Penetration Through the Magnetopause and Comparison With MMS and Other Spacecraft Observations
Creators: name: Lipatov, Alexander
name: Avanov, L. A.
name: Giles, B. L.
name: Gershman, D. J.
Publisher: name: AGU
Year: 2024
Subjects: particle acceleration
shocks
whistlers
Alfven waves
plasma clouds
wave-particle interactions

description: This research examines the plasma processes under penetration of the plasma clouds (plasmoids) across the magnetopause which is modeled as a tangential discontinuity (TD). Cases with the parallel magnetic field in both sides out of the TD are under investigation. Plasma parameters and magnetic field were chosen from the MMS mission and other spacecraft observations. The results are important for understanding the following basic space plasma physics problems: (a) plasma cloud deformation and strong phase mixing with magnetospheric plasma; (b) the transfer of mass, momentum and energy of magnetosheath and magnetic cloud plasma into magnetospheric plasmas; (c) necessary conditions for plasma cloud penetration via the magnetopause; (d) wave generation by plasma clouds inside the magnetopause.
title: Deformation and failure models of high strength steels for finite element simulations
Creators: name: Nahrmann, Marvin
Publisher: name: Universität Kassel
Year: 2022
Subjects: subject: Finite-Elemente-Methode
subject: Materialmodell
subject: Simulation
subject: Schädigungsmechanik
subject: Hochfeste Stähle
subject: 620
subject: Finite-Elemente-Methode
subject: Stoffgesetz
subject: Simulation
subject: Schadensmechanik
subject: Hochfester Stahl

description: Zugleich: Dissertation, Universität Kassel, 2021
Restricted-dimension subgradient descent : asymptotic bounds on error
Creators: name: Sales, Emmanuel
Publisher: name: The University of British Columbia
Year: 2021

description: Convex optimization, the study of minimizing convex functions over convex sets, is host to a multitude of methods with far-reaching applications in machine learning. For methods in convex optimization, it is often of interest to analyze the asymptotic bounds of the error of the method, or in other words, how close the result of the method gets to the minimum value after some set period of time. Gradient descent, an iterative procedure that involves taking the gradients of convex functions at a sequence of points, is one of the most important algorithms in the field of convex optimization. Subgradient descent refers to gradient descent that can be applied to functions that need not be smooth. The primary focus of this text is this particular type of gradient descent. This text will explore error estimates of the asymptotic bounds of the final iterate error of subgradient descent; that is, the error between the result of the subgradient descent procedure after a set number of steps T. Prior work has established tight asymptotic error bounds that are independent of the dimension of the underlying set; this work explores the possibility of there existing tighter bounds when the dimension of the underlying set is restricted to a finite constant d that is independent of T. In this work we have proven that in the case of d = 1, the final iterate error has an upper bound of O(1/√T).
title: Simulation-Based Failure Analysis of Torsionally Stressed Lightweight Structures in Fiber Composite-Elastomer Hybrid Design
Creators: name: Wilkowski, Moritz
name: Rayer, Moritz
name: Schiffers, Reinhard
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2024
Subjects: subject: Simulative failure analysis
subject: Lightweight structures
subject: Hybrid drive shafts
subject: Fiber composite-elastomer design
subject: 620

description: Due to their high strength-to-density ratio, fiberreinforced lightweight components such as drive and cardan shafts have become established in the aerospace, automotive and shipbuilding industries. To increase the performance of such components, new hybrid material combinations of load-transmitting fiber-reinforced plastics (FRPs) and elastomeric decoupling layers offer a promising concept. The aim of this study is to evaluate the influence of the integrated use of elastomers on the structural stability of hybrid drive shafts. For this purpose, conventional composite drive shafts and hybrid designs of different lengths are systematically investigated and compared by means of finite element simulations. The focus is on the analysis of damage behavior, which is manifested by strength or stability failure and has a significant impact on the performance. The study results present the torsional stiffness of the corresponding drive shafts, illustrating the precise time point at which a strength or stability failure arises. For visualization, the damage patterns at the failure occurrence time from the finite element simulations have been shown. In summary, this study provides valuable insights for the material selection and design of drive shafts, which should be considered in the development of future drive systems.
HARP2 Pre-Launch Calibration Overview: The Effects of a Wide Field of View
Creators: name: Sienkiewicz, Noah
name: Martins, J. Vanderlei
name: McBride, Brent
name: Xu, Xiaoguang
name: Puthukkudy, Anin
name: Smith, Rachel
name: Fernandez-Borda, Roberto
Publisher: name: EGU
Year: 2024
Subjects: UMBC Earth and Space Institute

description: The HyperAngular Rainbow Polarimeter (HARP2) is a wide field-of-view (FOV) polarimeter built for the NASA Plankton Aerosol Cloud and Ocean Ecosystem mission launched in early 2024. HARP2 measures the linear Stokes parameters across a 114° × 100° (along-track by cross-track) FOV. In the Fall of 2022, HARP2 underwent calibration at NASA Goddard Space Flight Center (GSFC) Calibration Laboratory (Code 618). HARP2 was characterized for radiometric and polarimetric response across its FOV. We have used telecentric calibration methodology on prior iterations of HARP that involved the normalization of pixels across the FOV such that calibration parameters determined at the center of the charged coupled device (CCD) detector can be used across the entire scene. By using a dual-axis yaw/pitch motorized mount, we devised two scan patterns to evaluate this methodology for HARP2. The results show that pure intensity measurements do indeed vary minimally across the FOV and therefore can utilize the flat-field normalization (telecentric) technique. On the other hand, images of polarized targets change significantly across the FOV, and calibration parameters determined at the center of the detector used in the wide FOV perform significantly worse than calibration parameters determined at or near to the location of the test (up to 5 % mean absolute error in degree of linear polarization, DoLP). We evaluated the use of a paraboloid fit of the polarized calibration parameters, at discrete FOV locations, to determine those parameters at a pixel-level resolution. According to the wide FOV results, this process shows a marked improvement for fully polarized (DoLP = 1) calibration data to less than 1 % uncertainty after using the paraboloid fit. These results are important for the development of any wide FOV polarimeter, especially those like HARP2 which use a front lens which causes significant barrel distortion and a division of amplitude central optical element leveraging multiple reflections. Full characterization of the source of these optical effects remains a part of future work.
title: Aprenda a escuchar una guia a los metodos de educacion de adultos no formal
Creators: name: Vella, Jane Kathryn
Publisher: name: University of Massachusetts Amherst
Year: 1979

description: Existen análisis estadísticos que indican de manera irrefutable la necesidad que existe alrodedor del mundo de crear programas de educación no formales los cuales deberán alcanzar a millones de personas cuyas necisdades educativas no han sido stisfechas por medio del sistema de educación formal. A medida que estos programas se desarrollan, se llega a la siguiente conclusión: los métodos y enfoques utilizados por el sistema educativo formal para la educación de los adultos no han demonstrado ser eficientes en una educación no formal para adultos. La relación jerárquica entre maestro/estudiante, la lección bien preparada para "divulgar" concimiento, los ejercicios estructurados para practicar el uso de los nuevos conocimientos, y las pruebas para asegurar tanto al maestro como al estudiante de que éste ûltimo ha tenido éxito en el aprendizaje, carecen simplemente de carácter funcional en las situaciones de campo en las cuales la educación no formal puede ser de ayuda. Tenemos la necesidad de establecer un nuevo precedente: un paradigma o sistema para el aprendizaje de adultos. Los expertos teóricos en este campo han explicado el porqué de manera competente: Malcolm Knowles, Paulo Freire, Philip Coombs, George Axinn, y Tim Simkins han expuesto el plan y el objeto de una nueva pedagogía. Sin embargo, existen pocas guías de campo que indiquen la manera a proceder para implementar tal nuevo enfoque. Este breve libro propone satisfacer esta necesidad mediante la indicación de nuevos métodos de eduicación para el planteamiento de problemas (problem-posing education): el uso de códigos, la representación de juegos de papeles, los juegos, y el material folklórico. Este libro se concibe de la necisidad de una tal guía de campo como lo han expresado los colegas que trabajan en programas de educación no formal y de las experiencas del autor en un programa titulado "Educación Comunitaria para el Desarrollo" en Musoma, Tanzia. Este libro tiene la perspeciva de un trabajador de campo. Los aspectos teóricos se pueden hallar profusamente en otras referencias; se trata aquí de un intento de consolidar las ideas prácticas sobre el aprendizaje de adultos para hombres y mujeres que trabajan. El problema operativo de todo este texto es: ¿Qué maneras de trabajar con adultos contribuyen tanto a su desarollo personal como a los objectivos de un programa determinado?, o expuesto de manera más sucinta: ¿Cómo podemos nosotros los educadores de adultos, aprender a escuchar?