cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: An investigation of supercritical carbon dioxide in 1.5 mm horizontal channels at elevated thermal loads
Creators: name: Jackson, Zachary
name: Ireland, Peter
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: High heat flux
subject: sCO2
subject: Microchannel
subject: 620

description: The Oxford Laser Heating Facility (OLAHF) has been upgraded with a supercritical carbon dioxide (sCO2) flow circulating loop, capable of providing component level flow rates to test pieces at temperatures and pressures up to 100°C and 100 bar. Near to the critical point, the large variations in sCO2 thermophysical properties can lead to adverse cooling and heat transfer effects. There are currently gaps in the understanding of the effects of larger thermal gradients (i.e. heat fluxes) on the heat transfer performance of sCO2 systems. An initial experimental campaign was performed on an additively manufactured stainless steel test piece containing an array of 11, 1.5 mm square internal channels using the high power laser modules located at OLAHF. Heat fluxes ranging from 116 to 1000 kW/m2 to the upper surface of the horizontally-oriented test piece. Data were obtained for fluid inlet temperatures between 18 and 28°C and mass fluxes of 1500 and 3000 kg/m2s at a constant inlet pressure of 80 bar (inlet Reynolds numbers from 3 x 104 to 8 x 104). Resulting heat transfer coefficients were determined using a combination of ray tracing and finite element (FE) analyses of the test piece at each experimental condition. Average heat transfer coefficients were shown to exhibit a significant dependence on applied heat flux for both mass flux conditions and all inlet temperatures. The heat transfer coefficients were compared to empirical correlations with varied levels of agreement. The data was additionally examined for the potential existence of buoyancy and flow acceleration effects.
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. 160
Children’s Use of Digital Devices for Learning at Home in 2017 and 2022
Creators: name: Stites, Michele
name: Sonnenschein, Susan
name: Gursoy, Hatice
name: Krasniqi, Besjanë
Publisher: name: Maryland Shared Open Access Repository
Year: 2023
Subjects: UMBC Children and Families, Schooling and Development Lab

description: SRCD, Salt Lake City, UT, 2023
Biohydrogen Production by Microalgae Isolated from the Rice Paddle Field in Thailand
Creators: name: Saranya Phunpruch
name: Amornrat Puangplub
name: Aran Incharoensakdi
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: Hydrogen production,Microalgae,Rice field

description: 26 (Supplement), 21, KKU Research Journal
Lunar Brightness Temperature Measurement with CHIME
Creators: name: Zhang, Yuze
Publisher: name: The University of British Columbia
Year: 2021

description: Half a century after measurement of the lunar brightness temperature for preparations of the moon landing, Canadian Hydrogen Intensity Mapping Experiment (CHIME) provides improved instrumentation and a more sophisticated method for the same measurement. Such measurement also helps our understanding of CHIME itself and extends its limit, such as better calibration of antenna beam patterns and understanding of the artifacts within CHIME data. Previous research in 1950s has provided multiple data points with lunar brightness temperatures from 230 to 240 Kelvin between 100MHz and 1000MHz. However, a recent measurement performed by Murchison Widefield Array (MWA) indicates a much lower value of the lunar brightness temperature around 180 Kelvin at 150 MHz. Given that the CHIME band is also in low frequencies, a series of measurements can be performed between 400MHz and 800MHz to test the result from MWA which can potentially reject 1950s’ results and enhance our knowledge about lunar brightness temperature in low frequencies. This research is aimed to measure the lunar brightness temperature within the CHIME band from 400MHz to 800MHz. To measure the lunar brightness temperature from CHIME’s visibility data, Fringestop was performed. Subsequently, an averaged background intensity was measured and subtracted from the intensity obtained after Fringestop. Rayleigh Jeans Law was used to finalize the calculation of the lunar brightness temperature. There is inconsistency in my result. Between the two measured lunar brightness temperature values at different times and frequencies, one agrees with the 1950s measurement while the other agrees with the data measured by MWA in 2017. Nevertheless, this study helps to pave the foundation of lunar brightness temperature measurement with CHIME. More future measurements can be performed and averaged with improved methods.
Toward a better understanding of the causal effects of role demands on work–family conflict: A genetic modeling approach
Creators: name: Allen, Tammy D.
name: Regina, Joseph
name: Wiernik, Brenton M.
name: Waiwood, Aashna
Publisher: name: APA
Year: 2023
Subjects: subject: Personality
subject: Job Demands
subject: Family Work Conflict
subject: Genetics
subject: FOS: Biological sciences
subject: Personality Traits
subject: Family Work Relationship

description: Over the past several decades, there has been considerable interest in the theoretical causes of work–family conflict (WFC). Most studies have focused on situational determinants, often ignoring the role of personal factors such as disposition and heritable elements. We increase understanding of person versus situation influences on WFC through estimation of the relationship between role demands and WFC after controlling for genetic confounding, measured personality traits, family confounds, and other stable dispositions. Based on twin data from the National Survey of Midlife Development in the United States (MIDUS), we examine the role of genetic factors in explaining variation in WFC (both work interference with family [WIF] and family interference with work [FIW]). Results support WFC has an additive genetic component, accounting for 31% [95% CI 18%, 45%] and 16% [95% CI 2%, 30%] of the variance in WIF and FIW, respectively. In addition, we test two competing hypotheses with regard to the relationship between role demands and WFC. Results support the phenotypic causal relationship for WIF, consistent with the notion the relationship between work demands and WIF reflect situational processes. However, results support the genetic confounding hypothesis for FIW, indicating observed relationships between family demands and FIW are primarily due to genetic factors. Our results provide new insights into the nature of WFC relationships and underscore that ignoring the influence of heritability can bias estimates of role demand effects in WFC research.
title: High temperature nuclear cogeneration utilizing supercritical CO2 for enhanced thermal efficiency
Creators: name: Khan, Babras
name: Stepanek, Jan
name: Dostal, Vaclav
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: Supercritical carbon dioxide
subject: Brayton cycle, Nuclear
subject: Thermal efficiency
subject: 620

description: This research addresses the challenges of clean energy production for industrial applications and highlights the role of nuclear power in achieving economic, safety and environmental sustainability goals. A thermodynamic analysis of a high-temperature nuclear reactor integrating sCO2 Brayton cycle and reboiler was carried out. System performance was evaluated by varying turbine inlet temperature and compressor pressure ratio. The results show that higher reboiler CO2 inlet temperature significantly improves the power cycle efficiency up to the optimal threshold of 740°C, beyond which the efficiency improvements diminish. However, increasing turbine efficiency can significantly increase thermal efficiency, raising it from around 25% to 45%. The effect of compressor efficiency is less pronounced, with thermal efficiency increasing from 21% to 25%. The net power output increases with the turbine inlet temperature and compressor pressure ratio, with the peak temperature of 725°C and pressure ratio of 4.0, with the maximum power output of approximately 3.35MW. These insights are critical to optimize the design and operation of nuclear-driven thermal power systems to maximize efficiency and net power output.
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. 79
How School University Partnerships Can Improve Equitable Learning Opportunities for Underserved Children
Creators: name: Sonnenschein, Susan
name: Brock, Amber
name: Lahoury, Hilary
name: Galindo, Claudia
Publisher: name: Maryland Shared Open Access Repository
Year: 2023
Subjects: UMBC Children and Families, Schooling and Development Lab

description: SRCD 2023 Biennial Meeting in Salt Lake City, UT
Hydrogen Production by Immobilized Cells of Unicellular Halotolerant Cyanobacterium Aphanothece Halophytica in Alginate Beads
Creators: name: Sunisa Pansook
name: Aran Incharoensakdi
name: Saranya Phunpruch
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: H2 production,Aphanothece halophytica,Immobilization,Alginate bead

description: 27 (Supplement), 21, KKU Research Journal
Comparison of SHF and SSF Processes for Ethanol Production from Alkali-Acid Pretreated Sugarcane trash
Creators: name: Suthkamol Suttikul
name: Teerapatr Srinorakutara
name: Ekarat Butivate
name: Orasoon, Kitti
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: cellulosic ethanol production,alkali-acid pretreatment,separate hydrolysis and fermentation (SHF),simultaneous saccharification and fermentation (SSF),sugarcane trash

description: 25 (Supplement), 21, KKU Research Journal
title: Systematic data-driven controller tuning for reliable and efficient offdesign operation of a recuperated sCO2 cycle over a wide range of power levels and ambient temperatures
Creators: name: Hofer, Markus
name: Peiretti, Matthias
name: Buck, Michael
name: Starflinger, Jörg
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: recuperated cycle
subject: control
subject: tuning
subject: off-design
subject: data-driven
subject: 620

description: This study deals with the off-design operation and controller tuning of a 5 MWth, air-cooled recuperated supercritical carbon dioxide (sCO2) Brayton Cycle. Previous studies indicated that implemented PID controllers require gain scheduling for efficient operation under fluctuating air temperatures or load levels. However, regarding sCO2 cycles, limited literature explicitly covers controller tuning, with a majority relying on manual methods. Therefore, this study presents and implements a gain scheduling approach for the air-cooled heat sink of the cycle in a systematic and automized manner, includes the following steps: Calculation of the steady-state boundary conditions, determination of transfer functions from step tests, controller tuning using Matlab and Internal Model Control and, finally, controller testing. It was found that the Internal Model Control approach, with a closed loop time constant equal to 1/10 of the open loop one, yields a stable and efficient controller performance for all boundary conditions, except cases with a low air mass flow rate. Consequently, it is recommended to avoid such extreme part-load conditions, e.g. by cooler modularization. Finally, important considerations for the following tuning of the inventory control are presented, highlighting the interaction of component design and controllability.
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. 377
Production of Fumaric acid from Oil Palm Empty Fruit Bunch
Creators: name: Panida U-Thai
name: Pilanee Vaithanomsat
name: Antika Boondaeng
name: Anfal Talek
name: Sawitri Chuntranuluck
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: Fumaric acid,oil palm empty fruit bunch,isolation and screening,separate hydrolysis and fermentation (SHF)

description: 24 (Supplement), 21, KKU Research Journal
title: Analysis and design of an ultra-high temperature heat pump using CO2 providing carbon-neutral industrial heat
Creators: name: Steinberg, Lukas
name: Glos, Stefan
name: Adelt, Niclas
name: Schlehuber, Dominic
name: Span, Roland
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: Supercritical CO2
subject: High-Temperature Heat Pump
subject: COP
subject: Transcritical Brayton cycle
subject: Thermodynamic modelling
subject: 620

description: Ensuring a CO2-neutral supply of process heat is critical for advancing the energy transition in industrial sectors. One promising approach is the integration of high-temperature heat pumps, powered by renewable electricity, to generate process steam, which is widely used in the chemical industry at pressures up to 110 bar. An ultra-high temperature heat pump concept with supercritical CO2 as the working medium, designed for the supply of a generic chemical plant, was developed as part of the project CO2NEICHEM. This study evaluates this high-temperature heat pump using a transcritical reverse Brayton cycle with an internal heat exchanger and an expansion turbine. The process involves compressing water to operating pressure, followed by preheating, evaporation and superheating using the transcritical reverse Brayton cycle for heat supply. Various circuit designs and key sensitivities are analyzed to optimize performance. Additionally, it is explored how the efficiency of the heat pump varies with process steam pressure and superheating temperature. Furthermore, part load operation is considered by varying the heat source flow. In all configurations, the study investigates thermodynamic modeling details of the cycle and its heat exchangers and turbomachinery and the resulting performance. Moreover, first drafts of the turbomachinery design are presented for a selected application case.
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. 112
Interviewer Manual to the matrix-specific questionnaires (sampling of urine and blood) (1st round priority substances)
Creators: name: Pack, L. Kim
name: Cerna, Milena
name: Halldórsson, Þórhallur Ingi
name: Iavicoli, Ivo
name: Kiviranta, Hannu
name: Korkalainen, Merja
name: Lange, Rosa
name: Manno, Maurizio
name: Mikkola, Jouni
name: Moshammer, Hanns
name: Rantakokko, Panu
name: Ruokojärvi, Päivi
name: Schernhammer, Eva
Publisher: name: Zenodo
Year: 2018
Subjects: HBM study
questionnaire
fieldwork
sampling
HBM
Human Biomonitoring
study material
matrix
interviewer manual
interview

description: The HBM4EU matrix-specific questionnaires have been designed to collect a select amount of information concerning individual characteristics of the participants and on different sources and routes of exposure to the 1st round priority substances selected for study (Phthalates/DINCH, Bisphenols, Per-/Polyfluorinated compounds, Flame Retardants, Cd, Cr, PAHs and Aniline family: MOCA), with the aim to characterise as well as possible the level of exposure to these substances (where considered relevant) directly prior (past 24 or 48 hours) to the sampling.
 As urine and blood are currently the most likely matrices to be analysed, questionnaires have been prepared accordingly. It might be necessary to adapt some wording and use specific questions in the urine questionnaire depending on the type of urine envisioned to be sampled (e.g. morning urine, spot urine, etc.).
 The questions are justified and elaborated on in this Interviewer Manual for the matrix-specific questionnaires. It shows that this document is closely connected to this basic questionnaire. This document is also included as an annex in HBM4EU Deliverable D7.3.
description: This document has been created for the HBM4EU project. HBM4EU has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 733032. This document was originally an annex to a HBM4EU project deliverable. This annex is here provided also as a single file for easier use and accessibility.
Issues during COVID-19 with Children: Perspectives on Education
Creators: name: Sonnenschein, Susan
name: Stites, Michele
name: Grossman, Julie A.
Publisher: name: Maryland Shared Open Access Repository
Year: 2023
Subjects: UMBC Children and Families, Schooling and Development Lab

description: Dupont Summit on Science, Technology, and Environmental Policy, Washington, D.C., February, 2023
title: Off-design of a lab scale SCO2 based thermally integrated pumped thermal energy storage
Creators: name: Shamsi, Syed
name: Barberis, Stefano
name: Maccarini, Simone
name: Traverso, Alberto
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: sCO2 Cycles
subject: Off design
subject: Thermally integrated Pumped thermal energy storage
subject: Energy storage
subject: experimental design
subject: 620

description: In this paper, an off-design analysis of a lab-scale cycle sCO2 Thermally Integrated - Pumped Thermal Energy Storage (TI-PTES), based on Brayton type cycle, is presented. Off-design conditions arise due to load-schedule following, or due to variations in storage tank temperatures (e.g. for incomplete charging/discharging of the TES) or due to the temperature of the external heat source integrated in the cycle or the ambient temperature. The goal of this off-design analysis is to identify the potential operating envelope for the off-design temperatures in the cycle. To that end, off-design envelope for the off-design of ambient temperature and the integrated heat source is evaluated. The off-design envelope is mapped for the rotational speed of the hot machines in the charging and discharging cycles of the TI-PTES. Based on the off-design envelope, mitigation strategies have been proposed with the target to bring the storage temperatures to design point. Inventory control for the heat transfer fluid of TES has been proposed for all the temperature related off-design conditions, as it is a less complex strategy than controlling the mass flow rate of the CO2 loop. The operational range of hot turbomachines, storage temperatures, pressure ratios, powers and performance of the cycles have been evaluated for the selected off-design cases.
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. 350
title: sCO2 waste heat recovery system optimization for electric arc furnaces exhaust stream
Creators: name: Vesely, Ladislav
name: Rapp, Logan
name: Kapat, Jayanta
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: Decarbonization
subject: waste heat
subject: power cycle
subject: optimization
subject: 620

description: Decarbonization of power generation, transportation, and energy-intensive industries (i.e., steel and iron, cement, aluminum, glass, food and beverage, paper, etc.) is necessary to reduce CO2 emissions considering the continually growing world population and related increasing energy consumption. CO2 emissions from energy-intensive industries can be reduced through several different approaches (i.e., direct - alternative fuel or energy source and Carbon capture systems; indirect - utilization of waste heat for the plant’s own consumption), where waste heat recovery represents a low-cost, zero-emissions power generation option with near-term deployment opportunities. In this paper, the steelmaking process is investigated as a potential source of waste heat to reduce the plant’s own consumption. The steelmaking process has three sources of waste heat in three different steps where the waste heat can be utilized. The exhaust gas stream is only approximately 10 % of the available waste heat. However, the temperatures are between 473 and 1573 K based on the process step and type of furnace (i.e., Blast furnace, Basic oxygen furnace, Electric arc furnace). Due to the large temperature range, potential retrofitting, and limited footprint, a sCO2 waste heat recovery system can be an ideal candidate for utilizing waste heat streams in the steelmaking processes. The paper is focused on the optimization of potential waste heat recovery systems based on sCO2 power cycle for a steel plant with several electric arc furnaces (EAF). Several different sCO2 cycle layouts (i.e., Simple, Recuperated, Intercooling, Recompression, Reheating, Split expansion cycle) have been investigated to meet the requirements. Results show higher performance of the sCO2 cycle and potential retrofitting into the current steel plants. The sCO2 power cycles can reach cycle efficiencies above 40 % and provide approximately 800 kWel from the waste heat stream. Part of the work is cost analysis which provided additional parameter/decision value for cycle layout selection.
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. 151
Factors Affecting Children’s Learning During COVID-19
Creators: name: Sonnenschein, Susan
name: Stites, Michele
name: Krasniqi, Besjanë
Publisher: name: Maryland Shared Open Access Repository
Year: 2023
Subjects: UMBC Children and Families, Schooling and Development Lab

description: In spring 2020, an estimated 55.1 million children in the United States experienced school closures related to COVID-19 (Education Week, 2020). As a result of these closures, 93% of families reported their children’s schools transitioned to virtual learning. (U.S. Census, 2021). Research has found significant gaps in students’ learning because of these COVID-19 pandemic school closures. This chapter describes the educational areas most negatively impacted by the COVID-19 school closures as identified by families and schools. The negative impacts were especially significant for students of color, families from near or below the poverty line, and students with disabilities. As discussed below, students’ learning during COVID-19 was most impacted by lack of internet/technology, quality of and frequency of engagement in instruction, and attendance at virtual learning sessions. The chapter concludes with recommendations for decreasing the learning gaps left in the wake of the COVID-19 school closures.
AMIR TEMUR – BUYUK DAVLAT ARBOBI
Creators: name: Azimov, Adhamjon
name: Riskiyyev, Ibratillo
Publisher: name: Zenodo
Year: 2025

description: Amir Temur  O'rta Osiyo va butun dunyo tarixida buyuk harbiy rahbar, davlat arbobi va madaniyat homiysi sifatida tanilgan. Ushbu maqola Amir Temurning davlat arbobi sifatidagi roli va uning tarixdagi o‘rni haqida so‘z yuritadi. Maqolada Temurning harbiy yurishlari, siyosiy islohotlari, iqtisodiy siyosati va madaniy merosi tahlil qilinadi. Amir Temur o‘zining harbiy muvaffaqiyatlari bilan katta hududlarni zabt etib, Temuriylar imperiyasini yaratdi. Shuningdek, u markazlashgan boshqaruv tizimini o‘rnatdi, davlatni iqtisodiy va siyosiy jihatdan mustahkamladi. Uning Samarqandni ilm-fan va madaniyat markaziga aylantirishi, ilmiy va madaniy rivojlanishga qo‘shgan hissasi uning buyukligini yanada oshiradi. Temurning siyosiy va madaniy merosi, uning davlat boshqaruvi, qonunlar va madaniy yutuqlari bugungi kunda ham o‘rganilmoqda va dunyo tarixida o‘z izini qoldirgan. Bu maqola Amir Temurning buyuk davlat arbobi sifatidagi ahamiyatini keng yoritib beradi va uning tarixdagi o‘rni hamda merosini chuqur tahlil qiladi.
The Economics of the Joint Management of Water Resources and Aquatic Species in the United States
Creators: name: Kroetz, Kailin
name: Kuwayama, Yusuke
name: Vexler, Caroline
Publisher: name: University of Chicago Press
Year: 2020
Subjects: Q2

description: The health of many marine, coastal, freshwater, and other aquatic ecosystems is inextricably linked to decisions about the management of water quality and quantity. In this article we review the economic literature aimed at quantifying the impacts of water resource management on aquatic species in the United States and the potential welfare gains of managing water and aquatic species systems jointly. Existing studies consider multiple water uses, such as agricultural irrigation and hydropower generation, as well as different societal benefits from aquatic species, such as commercial and recreational fishing and endangered species preservation. These studies use a variety of methodologies, including stated and revealed preference techniques, bioeconomic modeling, and reduced-form econometrics. We conclude with a discussion of future directions for research that could increase understanding of the trade-offs between water and aquatic species management outcomes and identify gains from the joint management of water resources and aquatic species in the United States.
Quantifying the Human Health Benefits of Using Satellite Information to Detect Cyanobacterial Harmful Algal Blooms and Manage Recreational Advisories in U.S. Lakes
Creators: name: Stroming, Signe
name: Robertson, Molly
name: Mabee, Bethany
name: Kuwayama, Yusuke
name: Schaeffer, Blake
Publisher: name: AGU
Year: 2020
Subjects: Water quality
Recreational advisories
Human health
Value of information
Harmful algal blooms

description: Significant recent advances in satellite remote sensing allow environmental managers to detect and monitor cyanobacterial harmful algal blooms (cyanoHAB), and these capabilities are being used more frequently in water quality management. A quantitative estimate of the socioeconomic benefits generated from these new capabilities, known as an impact assessment, was missing from the growing literature on cyanoHABs and remote sensing. In this paper, we present an impact assessment framework to characterize the socioeconomic benefits of satellite remote sensing for detecting cyanoHABs and managing recreational advisories at freshwater lakes. We then apply this framework to estimate the socioeconomic benefits of satellite data that were used to manage a 2017 cyanoHAB event in Utah Lake. CyanoHAB events on Utah Lake can pose health risks to people who interact with the blooms through recreation. We find that the availability of satellite data yielded socioeconomic benefits by improving human health outcomes valued at approximately \370,000, though a sensitivity analysis reveals that this central estimate can vary significantly (\55,000–$1,057,000 in benefits) as a result of different assumptions regarding the time delay in posting a recreational advisory, the number of people exposed to the cyanoHAB, the number of people who experience gastrointestinal symptoms, and the cost per case of illness.
Validation of radiomics features using a variable density 3D printed PET phantom
Creators: name: Javanmardi, Arash
Publisher: name: The University of British Columbia
Year: 2021

description: Rapid advancements in high-throughput computing have used medical images to compute quantitative and minable data that have large implications on clinical events in oncology management. This has generated a new area of research referred to as “Radiomics”. The extraction of quantitative imaging features and textures from medical images provides unique data about tissue pathology that allows for better diagnosis and treatment planning for cancer patients. Limitations of radiomics arise when different scanners show inconsistent radiomic features due to the intrinsic differences between scanners. The conventional method of image quality validation is done using the NEMA Image Quality phantom, where 18FFDG is inserted into fillable spheres. This method ignores the heterogeneity and anatomy of real tumours. Therefore it is incapable of verifying and validating crucial radiomic features capable of providing highly accurate diagnosis and prognosis of cancer. The aim of this thesis is to harmonize cross-center PET scanners and validate radiomic features using a novel 3D-printed phantom that displays heterogeneous activity distributions. Digital Reference Objects (DROs) with known radiomic features were used as the reference objects for the 3D-printing of the variable density phantom and testing of radiomic features [1]. Using the in-house made PhantomCreator MATLAB function, 3D printable DRO phantoms were generated.
title: Performance assessment of sCO2- and organic fluid based cycles integrated with LNG gasification plants
Creators: name: Tola, Vittorio
name: Gerina, Francesco
name: Marchionni, Matteo
name: Finkenrath, Matthias
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: integrated cycle
subject: regasification
subject: LNG
subject: 620

description: In recent years, the role of natural gas in the global energy mix has significantly increased, contributing 24.7% to the overall primary energy supply in 2020, due to its importance in the energy transition towards decarbonization. This rise in consumption has led to a substantial growth in interregional trade, with Liquefied Natural Gas (LNG) surpassing pipelines as the primary transportation method. In 2020, LNG accounted for 52% of global natural gas trade, up from 41% in 2010. Efficient operation of LNG regasification terminals is now crucial for both environmental and economic reasons, particularly regarding the recovery of cold energy typically wasted during regasification, where LNG is stored at approximately −160 °C and ambient pressure. This study investigates the integration of LNG regasification with thermodynamic cycles that exploit the available cold energy during the working fluid’s condensation. Two cycle categories are considered: a low-temperature cycle using seawater as a heat source, and a high-temperature cycle using exhaust gases from a gas turbine powered by a portion of the regasified natural gas. CO2 and R125 are selected as working fluids, with CO2 analyzed under both subcritical and supercritical conditions. The system’s performance is evaluated as a function of the regasification and distribution pressures, with a turbine installed to recover energy from the pressure difference. A medium-sized regasification terminal (50 kg/s) is analyzed, achieving an integrated cycle power output between 3 and 35 MW, depending on the heat source and working fluid. The integrated gas turbine operates at around 70–80 MW. Dedicated models developed Matlab environment simulate the regasification process, topping cycles, and their energy integration.
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. 424
Conventional Sewer Systems Are Too Time-Consuming, Costly and Inflexible to Meet the Challenges of the 21st Century
Creators: name: Öberg, Gunilla
name: Metson, Geneviève S.
name: Kuwayama, Yusuke
name: A. Conrad, Steven
Publisher: name: MDPI
Year: 2020
Subjects: rapid urban growth
sanitation crisis
illegal settlements
sustainable sanitation

description: There is an urgent need for innovation in the sanitation sector because the conventional model (toilet-to-sewer-to-treatment) is too time-consuming and costly, and alternatives are lacking. We estimate the challenge ahead by developing scenarios for 60 of the fastest-growing urban conglomerates in the World. We find that the majority would need to build out their sewer systems at a rate that is ten to 50 times higher than the highest rate for any project in the World Bank’s database, which is unrealistic. We also carry out a case study of Lagos, Nigeria, which suggests that, in any given year, 14–37% of Lagos State’s budget would need to be invested to provide sanitation to the presently underserviced population while keeping up with population growth, which also is unrealistic. Our study provides clear evidence that the conventional model for sanitation is unworkable for rapidly growing urban areas. We conclude there is an urgent need to encourage and fund projects that promote innovations that can tackle the three core challenges: can be built sufficiently quickly, are flexible, and affordable. This is not likely to happen unless the future generation is systematically trained and educated to creatively support innovation in sustainable sanitation.
Hydroeconomic modeling of resource recovery from wastewater: Implications for water quality and quantity management
Creators: name: Kuwayama, Yusuke
name: Olmstead, Sheila M.
Publisher: name: Wiley
Year: 2020

description: Emerging technologies and practices allow wastewater treatment facilities to recover valuable resources such as nutrients, energy, and recycled water during the wastewater treatment process. The ability to recover resources from wastewater introduces new tradeoffs in both water quality and quantity management. In particular, the fact that communities can obtain revenue from the sale of resources that are recovered from wastewater may help internalize the externalities of insufficient wastewater treatment. In this paper, we develop a theoretical model to characterize these tradeoffs within a hydroeconomic framework of optimal wastewater treatment with resource recovery, which is particularly well suited for applications in nutrient management. We use this model to derive analytical results that describe the economically optimal level of deployment, accounting for the fact that the technology or practice is costly and it generates benefits in the form of revenue from the recovered resource, as well as other societal benefits, such as improvements in human and ecosystem health. In addition, we present two examples using specific functional forms for treatment costs to demonstrate how the model can be applied to obtain general principles regarding societally optimal deployment. Our hydroeconomic framework can be used to explore the socioeconomic implications of strategies that target deployment of wastewater treatment with resource recovery, especially nutrients, at multiple scales.
Genetic and behavioural adaptations of drosophila melanogaster to circadian and seasonal selection pressures
Creators: name: Watkins, Joseph
Publisher: name: University of Leicester
Year: 2022
Subjects: Uncategorized

description: The changing of the seasons results in predictable environmental changes that exert strong seasonal selection pressures on all organisms. The most predictable is the daily oscillation of light (photoperiod) and temperature (thermoperiod). To survive the oncoming winter, Drosophila melanogaster enters a type of dormancy called diapause, characterized by an arrest in ovary development. In the long hot summer months, D. melanogaster alter their activity so that it is more diurnal with the emergence of the Afternoon (A) component. This thesis further investigates D. melanogaster’ response to the changing seasons through genetic and behavioural dissection. In doing so, two novel regulators for diapause were discovered. The first is a role for the microRNA (miRNA) miR-276, particularly the miR-276b paralogue, which inhibits timeless and thus promotes diapause. This finding represents the first evidence of a miRNA-mRNA interaction experimentally proven to regulate diapause in D. melanogaster. The second is an inhibitory role of the long forgotten 0.9 gene which, unlike at higher temperatures, acts independently of PERIOD. The role of temperature and light under simulated natural environmental conditions was also found to act in an unexpected way to regulate diapause. Under these conditions, the gradual changes rather than absolute or sudden changes in light and temperature must be synchronize. Only if they are in synch will the fly enter diapause. A similar relationship was also discovered in the study of the A component. Gradual changes in temperature were found to be the overriding regulator of the A component via TrpA1, in a promoter and isoform specific manner. However, light is important in the timing of the A component through the action of the Rhodopsins Rh3 and Rh6.
Ten rules to increase the societal value of earth observations
Creators: name: Virapongse, Arika
name: Pearlman, Francoise
name: Pearlman, Jay
name: Murambadoro, Miriam D.
name: Kuwayama, Yusuke
name: Glasscoe, Margaret T.
Publisher: name: Springer Nature
Year: 2020
Subjects: Value chain
Societal benefit
Earth observation
Value
Data
Information

description: Earth Observation (EO) data play an important role in our society today, but there is still tremendous opportunity to improve how these data are used to affect change. In this paper, we provide guidance to help data providers and intermediaries within the EO value chain (from data to applications) increase the societal value of the EO data, information, and data products that they work with. We first describe the EO value chain as a conceptual framework for how data are translated and applied for societal benefit. We then introduce three approaches that are often used to assess and improve the EO value chain. Finally, we present “10 rules” that can be implemented to increase the societal benefits of Earth science information. The 10 rules emphasize meeting user needs, problem-solving within interdisciplinary teams, and long-term sustainable solutions. Some rules focus on a specific segment of the value chain or phase in the problem-solving process, while others are relevant to the value chain or process as a whole. Each rule includes at least one case study example to illustrate the key points. The rules are loosely organized according to project management principles with the initial rules focusing on defining problems, planning for data use, creating effective teams, and examining a diverse selection of solutions. The next set of rules are best applied throughout a project, and include such concepts as evaluation, interoperability, trust, adoption, and documentation. Finally, the last rule addresses the challenge of determining when to close a project.
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: 2025
Subjects: Computer Vision

description: Supplemental Document
Remote worker communication during COVID-19: The role of quantity, quality, and supervisor expectation-setting
Creators: name: Shockley, Kristen M.
name: Allen, Tammy D.
name: Dodd, Hope
name: Waiwood, Aashna
Publisher: name: APA
Year: 2021
Subjects: Occupational Stress
Pandemics
Interdependence
COVID-19
Teleworkers
Communication
Telecommuting
Job Performance
Management Personnel
Supervisor Employee Interaction

description: Given the huge increase in remote work that has accompanied the Coronavirus disease (COVID-19) pandemic, understanding predictors of performance and wellbeing among remote workers has never been more timely. Effective communication is commonly cited as key to remote worker success, yet communication variables are rarely incorporated into remote work research. In the present study, we examined the relationship between communication frequency, communication quality, and supervisor-set communication expectations with daily job performance and burnout in an occupationally-diverse sample of employees. We used an experience sampling design and our hypotheses were tested with data collected over a 4-week period with a sample of 471 employees who shifted to full-time remote work due to COVID-19. Results indicated that daily communication quality was associated with daily performance and burnout. In addition, the extent to which supervisors established expectations about communication practices (e.g., expected response times to email) at the onset of the transition to remote work was positively associated with performance, but not burnout. Task interdependence was also tested as a moderator. Task interdependence moderated the relationship between communication quality and performance, such that the relationship was stronger when task interdependence was higher than when it was lower. Task interdependence also moderated the relationship between supervisor-set expectations and performance such that the relationship was stronger when task interdependence was lower than when it was higher. Expected curvilinear relationships between communication frequency and outcomes were not detected. Based on our findings, we provide recommendations for practice and future research.
Ecological literacy in Riley Park : Community accessible lesson plans for elementary school aged children
Creators: name: Cao, Shuhong
name: MacDonald, Kelley
name: Marohn, Samantha
name: Zhang, Xianyu
Publisher: name: The University of British Columbia
Year: 2021

description: Situated in Vancouver, BC, Riley Park serves as an educational resource for community members on local ecology, geography, biodiversity, and human history. The park can be used by local community members to develop an understanding of ecosystem biodiversity and showcase the effects of climate change on the natural world. Through educating young community members aged 6-12, this project helps to develop a profound, long-lasting connection to ecological concepts using Riley Park as a familiar example for children. A total of four, 60 minute lesson plans were constructed on the topics of climate change and biodiversity that each consist of discussion, activity, and wrap-up sections. These lesson plans were designed to first be used in the Little Mountain Neighbourhood House 2021 Spring Break Camp with the flexibility to use them beyond this program. By limiting the materials and background knowledge necessary to conduct the lessons, the lesson plans were made to be accessible for as many community members as possible. To enhance the quality of the relationship between young community members and the natural world, research into psychologically and experimentally proven methods of education was conducted to determine the most effective means of constructing educational plans. Four major elements of environmental education were identified as: avoiding eco-anxiety, maintaining a positive perspective on the field of science, ensuring engagement, and incorporating active learning strategies. These were referenced throughout the construction of appropriate learning objectives, lessons, activities, and evaluation techniques. These elements, in conjunction with reference to the BC curriculum guide, strengthened the effectiveness of the plans we established for use in the Riley Park spring break learning program and beyond.
Construction of Escherchia coli strain for producing recombinant antioxidative peptide from longan seeds
Creators: name: Thanaporn Wichai
name: Ruethairat Boonsombat
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: antioxidant,longan,overexpression,peptide

description: 23 (Supplement), 21, KKU Research Journal
Effect of Nitrogen Source on Ethanol Production from Weeds by a Simultaneous Saccharification and Fermentation Process
Creators: name: Sasi Mongkolchaiarunya
name: Pilanee Vaithanomsat
name: Sawitri Chuntranuluck
Publisher: name: Research and Technology Transfer Affairs Division
Year: 2016
Subjects: Ethanol,Small-flowered umbrella sedge,Cattail,SSF

description: 22 (Supplement), 21, KKU Research Journal
title: Forschungsdatenmanagement-Curriculum der Research Data Services an der Universitätsbibliothek Duisburg-Essen (Preprint)
Creators: name: Leimer, Sophia
name: Externbrink, Marlen
name: Hendriks, Sonja
name: Köhler, Anna
name: Korte, Lisa
name: Stegemann, Jessica
name: Stock, Sarah
name: Timm, Henning
name: Rehwald, Stephanie
Publisher: name: DuEPublico: Duisburg-Essen Publications online, University of Duisburg-Essen, Germany
Year: 2025
Subjects: subject: 020

description: Forschungsdatenmanagement (FDM) gewinnt zunehmend an Bedeutung für reproduzierbare und effiziente Forschung. Im Zuge dessen wird es für Forschende immer wichtiger, sich mit einem nachhaltigen Umgang mit Forschungsdaten, Publikationsmöglichkeiten, rechtlichen Rahmenbedingungen und der Vielzahl verfügbarer Software-Werkzeuge vertraut zu machen. Um Forschende verschiedener Disziplinen und Karrierestufen beim gezielten Wissensaufbau und bei der Kompetenzentwicklung zu unterstützen, wurde mit dem FDM-Curriculum an der Universitätsbibliothek Duisburg-Essen von der Servicestelle Research Data Services (RDS) ein strukturiertes Schulungsprogramm entwickelt. Das FDM-Curriculum ist untergliedert in ein Basis- und ein Vertiefungsmodul. Im Basismodul kann aus drei ganztägigen Grundlagenschulungen mit unterschiedlichem fachlichen Fokus gewählt werden. Das Vertiefungsmodul umfasst ein breitgef¨achertes Angebot an zweistündigen Hands-on-Online-Workshops zu verschiedenen FDM-Werkzeugen und -Themen. Als Motivation und als Nachweis für die Teilnahme an mehreren Veranstaltungen wird das FDM-Badge vergeben. Mit dem FDM-Curriculum und FDM-Badge wurde ein niederschwelliges und individuell wählbares Angebot geschaffen, das Forschenden den Zugang zu fachspezifischem und für sie relevantem FDM-Wissen in Form eines Baukastenmodells und den entsprechenden Nachweis bietet. Die Struktur des Programms erlaubt es, stetig neue Inhalte als Vertiefungsveranstaltungen zu ergänzen und sukzessive durch Angebote für weitere Zielgruppen zu erweitern. Das FDM-Curriculum unterstützt den Kulturwandel in der Wissenschaft hin zur Anerkennung guten Datenmanagements und Beiträgen zu offener, transparenter Wissenschaft.
Socio-environmental consideration of phosphorus flows in the urban sanitation chain of contrasting cities
Creators: name: Metson, Geneviève S.
name: Powers, Steve M.
name: Hale, Rebecca L.
name: Sayles, Jesse S.
name: Öberg, Gunilla
name: MacDonald, Graham K.
name: Kuwayama, Yusuke
name: Springer, Nathaniel P.
name: Weatherley, Anthony J.
name: Hondula, Kelly L.
name: Jones, Kristal
name: Chowdhury, Rubel B.
name: Beusen, Arthur H. W.
name: Bouwman, Alexander F.
Publisher: name: Springer Nature
Year: 2017
Subjects: Sanitation
Urban
Phosphorus
Sustainability
Socio-environmental factors

description: Understanding how cities can transform organic waste into a valuable resource is critical to urban sustainability. The capture and recycling of phosphorus (P), and other essential nutrients, from human excreta is particularly important as an alternative organic fertilizer source for agriculture. However, the complex set of socio-environmental factors influencing urban human excreta management is not yet sufficiently integrated into sustainable P research. Here, we synthesize information about the pathways P can take through urban sanitation systems along with barriers and facilitators to P recycling across cities. We examine five case study cities by using a sanitation chains approach: Accra, Ghana; Buenos Aires, Argentina; Beijing, China; Baltimore, USA; and London, England. Our cross-city comparison shows that London and Baltimore recycle a larger percentage of P from human excreta back to agricultural lands than other cities, and that there is a large diversity in socio-environmental factors that affect the patterns of recycling observed across cities. Our research highlights conditions that may be “necessary but not sufficient” for P recycling, including access to capital resources. Path dependencies of large sanitation infrastructure investments in the Global North contrast with rapidly urbanizing cities in the Global South, which present opportunities for alternative sanitation development pathways. Understanding such city-specific social and environmental barriers to P recycling options could help address multiple interacting societal objectives related to sanitation and provide options for satisfying global agricultural nutrient demand.