cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Pyrolysis-Gas Chromatography-Mass Spectrometry (Py-GC-MS) Quantification of Tire and Road Wear Particles (TRWP) in Environmental Matrices: Assessing the Importance of Microstructure in Instrument Calibration Protocols
Creators: name: Miller, Julie V.
name: Maskrey, Joshua R.
name: Chan, Kathy
name: Unice, Kenneth M.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Plant Biology

description: Thermogravimetric methods with internal polymer standards have successfully quantified environmental tire and road wear particle (TRWP) concentrations. However, TRWP quantification in environmental matrices via pyrolysis-gas chromatography-mass spectrometry (py-GC-MS) using butadiene rubber (BR) and styrene-butadiene rubber (SBR) marker 4-vinylcyclohexene (4-VCH; 1,4-butadiene-1,4-butadiene dimer) may be uncertain because of variable polymer compositions and BR and SBR microstructures. To determine if tire polymer microstructure is contributing to potentially over- or underestimating TRWP in the environment in py-GC-MS analyses, SBR materials (n = 8) commonly found in tire tread with varying microstructure were quantified via py-GC-MS, using 4-VCH and the deuterated internal standard d-4-VCH to provide a response ratio for each polymer. The response ratios of the dimer response to the total polymer quantity (instrument response slope) varied up to 6.8-fold for SBR, with a reduction to a 3.6-fold range when the polymer quantity was expressed as 1,4-butadiene mass rather than total polymer mass. Variability was reduced further when considering the polymerization method for emulsion-SBRs (n = 3; 1.4-fold range), but not solution-SBRs (n = 5; 2.7-fold range), which reflects the random versus structured heterosequencing of the two rubber types, respectively. Our findings suggest that py-GC-MS response should be interpreted based on empirical analysis of an appropriate number of regionally representative tire tread materials, rather than individual rubbers, because of the lack of methods available for determining unknown average microstructure in environmental samples.
Factors Affecting Agricultural Trade: An Intercountry Empirical Inquiry
Creators: name: Vollrath, Thomas L.
name: Vollrath, Thomas L.
Publisher: name: Unknown
Year: 1983
Subjects: subject: Agricultural and Food Policy
subject: International Development
subject: International Relations/Trade
subject: Research and Development/Tech Change/Emerging Technologies
subject: Research Methods/ Statistical Methods
subject: Agricultural trade
subject: agricultural development
subject: economic development
subject: comparative advantage
subject: induced technological change

description: The relationship between economic development and agricultural trade was evaluated quantitatively using 25 years of intercountry data. Econometric models were used to identify the importance of developmental factors affecting agricultural trade. In addition, descriptive statistics were generated enabling net exporting countries to be differentiated from net importing countries. The relevance of both the factor proportion and the technological explanation of comparative advantage was verified for agriculture. Implications for U.S. policy were drawn from the empirical analyses and integrated into a larger body of knowledge concerning the interrelation among agricultural development, agricultural trade, and general economic performance.
title: Prüfbericht G 2045 : Anhängesprühgerät Mitterer 10 81 VV (V15) ; Anerkannt für Pflanzenschutzmaßnahmen im Obstbau
Creators: name: JKI-Institut Für Anwendungstechnik Im Pflanzenschutz
Publisher: name: Bundesbehörden und Einrichtungen im Geschäftsbereich des Bundesministeriums für Ernährung und Landwirtschaft (BMEL)
Year: 2022
Subjects: subject: 630

description: Geräteprüfberichte des JKI, p. 1
Determination of Antioxidant Properties and β-Carotene in Orange Fruits and Vegetables by an Oxidation Voltammetric Assay
Creators: name: Koc, Tugca Bilenler
name: Savan, Ebru Kuyumcu
name: Karabulut, Ihsan
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: Plant Biology

description: Recently, the evaluation of antioxidant properties using voltammetric techniques based on electrooxidation has attracted considerable attention. In this study, the antioxidant capacity, total phenolic compounds, and β-carotene content of orange-fleshed fruits and vegetables, including carrots, persimmons, and pumpkins, were evaluated by standard and electrochemical methods. The antioxidant capacity, evaluated by the ABTS and DPPH measurements, and the total phenolic compounds were determined spectrophotometrically. The results were expressed as Trolox equivalent antioxidant capacity (TEAC) and gallic acid, respectively. The β-carotene contents of the samples were determined by high-performance liquid chromatography (HPLC). Electrochemical measurements were performed with differential pulse voltammetry at a sensor formed by attaching single-walled carbon nanotubes onto the glassy carbon electrode surface. Trolox, gallic acid, and β-carotene were determined electrochemically with high sensitivity, repeatability, and low detection limits. Regression analysis was performed to correlate the results of the spectrophotometric assays and HPLC with those obtained electrochemically and satisfactory results were obtained.
Preliminary Changes in COVID-19 Purchasing Habits of Southeastern US Green Industry Consumers
Creators: name: Campbell, Ben
name: Rihn, Alicia
name: Campbell, Julie
name: Campbell, Ben
name: Rihn, Alicia
name: Campbell, Julie
Publisher: name: Unknown
Year: 2020
Subjects: subject: Agribusiness
subject: Marketing
subject: FOS: Economics and business
subject: retail
subject: curbside pickup
subject: online shopping
subject: ornamental plants

description: Historically, plant purchases frequently occur in physical retail centers (e.g., mass merchandisers, garden centers, etc.). The COVID-19 pandemic resulted in the adoption of retail measures to reduce disease transmission and spread, including stay-at-home/lockdown orders, retail store closures, limited retail occupancy and social distancing. Consequently, consumers’ ability to shop for products in-store was impacted and opened the opportunity to use nontraditional sales methods. This report provides a summary of consumers’ perceived plant purchasing behavior in the southeast U.S. Data was collected using an online survey which was conducted during the last week of July 2020. Responses were collected from an online panel of consumers in eight southeast states. A total of 670 consumers from Alabama (n=67), Florida (n=121), Georgia (n=168), Louisiana (n=37), Mississippi (n=25), North Carolina (n=63), South Carolina (n=120) and Tennessee (n=69) completed the survey. The survey addressed consumers’ shopping behavior for ornamental plants, how those behaviors changed during the pandemic and their anticipated shopping behavior after the pandemic.
SUSTAINABLE SPACE TRAVEL - HARNESSING PHOTOSYNTHESIS FOR OXYGEN PRODUCTION IN INTERPLANETARY CRAFT
Creators: name: Brandl, Edenilson
Publisher: name: Zenodo
Year: 2023
Subjects: Sustainable space travel
Photosynthesis
Oxygen production
Interplanetary craft
Closed ecosystems
Space technology innovation
Environmental sustainability

description: This article delves into the innovative approach of using photosynthesis for sustainable oxygen production in interplanetary travel. It explores the benefits of this method, including reduced resource dependence, lower mission costs, and minimized environmental impact. However, it also highlights the challenges, such as the harsh space environment and engineering complexities. The need for ongoing innovation and research in space technology is emphasized, as space exploration evolves to meet the demands of long-duration missions, lunar and Martian colonization, and interstellar travel. Continuous research is crucial for enhancing efficiency, promoting environmental sustainability, advancing life support systems, exploring alternative energy sources, and pioneering the future of human exploration.
 
Dieser Artikel befasst sich mit dem innovativen Ansatz, die Photosynthese zur nachhaltigen Sauerstoffproduktion bei interplanetaren Reisen zu nutzen. Es untersucht die Vorteile dieser Methode, einschließlich geringerer Ressourcenabhängigkeit, geringerer Missionskosten und minimierter Umweltbelastung. Es werden jedoch auch die Herausforderungen hervorgehoben, beispielsweise die raue Weltraumumgebung und die technische Komplexität. Der Bedarf an kontinuierlicher Innovation und Forschung in der Weltraumtechnologie wird betont, da sich die Weltraumforschung weiterentwickelt, um den Anforderungen von Langzeitmissionen, der Besiedlung von Mond und Mars sowie interstellaren Reisen gerecht zu werden. Kontinuierliche Forschung ist von entscheidender Bedeutung für die Steigerung der Effizienz, die Förderung der ökologischen Nachhaltigkeit, die Weiterentwicklung von Lebenserhaltungssystemen, die Erforschung alternativer Energiequellen und die Pionierarbeit für die Zukunft der menschlichen Erforschung.
Histone Chaperones and Digestive Cancer: A Comprehensive Review
Creators: name: Zhao, Zhou
name: Cai, Zhaolun
name: Jiang, Tianxiang
name: Han, Junhong
name: Zhang, Bo
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Cancer Biology
subject: Cell and Developmental Biology
subject: Life Sciences
subject: colorectal cancer
subject: esophageal cancer
subject: gastric cancer
subject: histone chaperone
subject: liver cancer
subject: pancreatic cancer

description: Histone chaperones are responsible for histone metabolism. Recent investigations have revealed that the abnormal expression of several histone chaperones in digestive cancer is associated with pathogenesis of digestive cancer. The purpose of this review is to determine the role of selected histone chaperones in the progression of digestive cancer and their prognostic significance.
On a potential-velocity formulation of Navier-Stokes equations
Creators: name: Marner Florian
name: Gaskell Philip, H.
name: Scholle Markus
Publisher: name: Физическая мезомеханика
Year: 2014
Subjects: FLUID DYNAMICS
COMPLEX METHODS
POTENTIALS
INTEGRABILITY
AIRY STRESS FUNCTION
LEAST SQUARES FINITE ELEMENTS

description: Computational methods in continuum mechanics, especially those encompassing fluid dynamics, have emerged as an essential investigative tool in nearly every field of technology. Despite being underpinned by a well-developed mathematical theory and the existence of readily available commercial software codes, computing solutions to the governing equations of fluid motion remains challenging: in essence due to the non-linearity involved. Additionally, in the case of free surface film flows the dynamic boundary condition at the free surface complicates the mathematical treatment notably. Recently, by introduction of an auxiliary potential field, a first integral of the twodimensional Navier-Stokes equations has been constructed leading to a set of equations, the differential order of which is lower than that of the original Navier-Stokes equations. In this paper a physical interpretation is provided for the new potential, making use of the close relationship between plane Stokes flow and plane linear elasticity. Moreover, it is shown that by application of this alternative approach to free surface flows the dynamic boundary condition is reduced to a standard Dirichlet-Neumann form, which allows for an elegant numerical treatment. A least squares finite element method is applied to the problem of gravity driven film flow over corrugated substrates in order to demonstrate the capabilities of the new approach. Encapsulating non-Newtonian behaviour and extension to three-dimensional problems is discussed briefly.
Ultra-Sensitive Electrochemical Determination of Carcinoembryonic Antigen by a Sandwich Immunosensor Graphene Oxide (GO)-Gold Substrate and a Silver-Coated Bovine Serum Albumin (BSA)-Platinum Nanocomposite on a Glassy Carbon Electrode (GCE)
Creators: name: Zhao, Wentang
name: Wu, Mei
name: Mei, Lisha
name: Li, Hongling
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Physiology
subject: Biotechnology
subject: Evolutionary Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: An ultra-sensitive electrochemical immunosensor for detecting carcinoembryonic antigen was prepared. Graphene oxide-gold was used as the substrate modifier of the sandwich immunosensor. The high conductivity of graphene oxide effectively enhanced the electron transfer rate. The large specific surface area of graphene and the biocompatibility of gold nanoparticles increased the number of primary antibodies. The bovine serum albumin coated silver – platinum composite was used as a secondary antibody tag to prepare signal probes. The excellent biocompatibility of bovine serum albumin increased the number of secondary antibody connections. Silver nanoparticles increased the speed of electron transfer, and platinum further enhanced electrochemical sensing capabilities by catalyzing hydrogen peroxide. The immunosensor showed good performance for detecting carcinoembryonic antigen. Under the optimal conditions, the dynamic response range for carcinoembryonic antigen was from 0.005 ng·mL−1 to 100 ng·mL−1 with a detection limit of 0.76 pg·mL−1. The immunosensor also shown high selectivity, suitable stability, and good reproducibility, which provides new capabilities for clinical carcinoembryonic antigen detection.
PattadkalZemelmanFietePriebe-2023-BalancedAmplification
Creators: name: Pattadkal, Jagruti
name: Zemelman, Boris V.
name: Fiete, Ila R.
name: J. Priebe, Nicholas
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 320999
subject: Neurosciences not elsewhere classified

description: Figure data from Pattadkal J. J., Zemelman B. V., Fiete I. R. and Priebe. N. J., 2023, Primate neocortex performs balanced sensory amplification
ComPol - A Compton polarimeter in a Nanosat
Creators: name: Meier, Matthias
Publisher: name: Zenodo
Year: 2022
Subjects: X-ray Polarimetry, Compton Telescope, CubeSat

description: The CubeSat mission ComPol will investigate the black hole binary system Cygnus X-1. The goal
 is to improve its physical model by measuring the polarization of the hard X-ray spectrum (20 – 200
 keV). The information about the polarization can be extracted from the kinematics of the Compton
 scattering. A Silicon Drift Detector (SDD) is used as a scatterer. The SDD is stacked onto a CeBr3
 calorimeter to be able to measure the full kinematics. The poster gives an overview of the scientific
 motivation, the detector setup, the performance of the system and the sensitivity study carried out
 for this purpose.
 This research is supported by the Excellence Cluster ORIGINS which is funded by the Deutsche
 Forschungsgemeinschaft (DFG, German Research Foundation) under Germany’s Excellence
 Strategy - EXC-2094-390783311
Supplemental Table S1-4
Creators: name: Zenz, Sabine
name: Regittnig, Werner
name: Boulgaropoulos, Beate
name: Augustin, Thomas
name: Brunner, Martina
name: Korsatko, Stefan
name: Münzker, Julia
name: Narath, Sophie H.
name: Raml, Reingard
name: Magnes, Christoph
name: R. Pieber, Thomas
Publisher: name: figshare
Year: 2022
Subjects: subject: 111502 Clinical Pharmacology and Therapeutics
subject: FOS: Clinical medicine

description: Level of significance was set to p < 0.05. N: number of subjects; SD: standard deviation.
MPEC 2023-U204 : 2023 UF6
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 UF6

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
ОДИН ИЗ ИНТЕРЕСНЫХ МЕТОДОВ В ПРЕПОДAВAНИИ ИНОСТРAННОГО ЯЗЫКA
Creators: name: Булычёва, М.Ф.
Publisher: name: Zenodo
Year: 2024

description: Слово «проект» зaимствовaно из лaтинского языкa, причaстие projtctus ознaчaет «вырвaвшийся вперёд», «опередивший других», «привлекaющий внимaние». Aлгоритм проектировaния кaк методa обрaзовaтельной деятельности тaков: «зaмысел – реaлизaция – рефлексия».
THE IMPACT OF HOMEWORK ON MIDDLE SCHOOL STUDENTS' ACADEMIC ACHIEVEMENT
Creators: name: Raimqulova, Sitora
Publisher: name: Zenodo
Year: 2024

description: This research paper examines the impact of homework on middle school students’ academic achievement. Despite the prevalent assumption that more homework directly correlates with better academic performance, this study analyzes a variety of factors to understand the nuanced relationship between homework loads and academic outcomes. A mixed-methods approach, including quantitative assessments of grades and qualitative surveys of students and teachers, was employed. The findings reveal that while moderate amounts of homework can support learning, excessive homework can lead to student burnout and diminished academic performance. Recommendations for educators include implementing balanced homework policies that consider students' overall well-being.
Observations of the SZ effect in the Athena Era
Creators: name: Mroczkowski, Tony
Publisher: name: Zenodo
Year: 2022
Subjects: SZ effect
AtLAST
galaxy clusters

description: The three main forms of the Sunyaev-Zeldovich effect – the classical thermal SZ effect, the kinetic SZ effect, and relativistic corrections to the thermal SZ effect – are already beginning to provide powerful tools to probe the warm/hot intracluster, intragroup, intercluster, and circumgalactic media traditionally probed through in X-ray observations. The current state of the art is dominated by widefield, arcminute resolution surveys such as those with Planck, ACT, and SPT, or by higher resolution targeted observations of very small fields such as those by MUSTANG-2, ALMA, and NIKA2. However, in the 2030s we anticipate the Atacama Large Aperture Submm Telescope (AtLAST) will lead a new generation of high spatial and spectral resolution widefield SZ observations. In this talk I will discuss the developing SZ science cases for AtLAST and how AtLAST can complement Athena.
title: Prüfbericht G 2203 : Anhängesprühgerät Munckhof Typ 107 mit variabler Luftumlenkung „Varimas“ ; Anerkannt für Pflanzenschutzmaßnahmen im Obstbau
Creators: name: JKI-Institut Für Anwendungstechnik Im Pflanzenschutz
Publisher: name: Bundesbehörden und Einrichtungen im Geschäftsbereich des Bundesministeriums für Ernährung und Landwirtschaft (BMEL)
Year: 2022
Subjects: subject: 630

description: Geräteprüfberichte des JKI, p. 1
Die Wachsamkeit gegenüber dem gottlosen Kommunismus, wie er gelehrt und gelebt wird, möge nicht durch das Verlangen nach einem Scheinfrieden erlahmen
Publisher: name: Herder Korrespondenz
Year: 1970

description: Herder Korrespondenz, Bd. 15 Nr. 10 (1960): Herder Korrespondenz, Band 15, Heft 10
THE EFFECTS OF BULLYING ON MIDDLE SCHOOL STUDENTS
Creators: name: Raimqulova, Sitora
Publisher: name: Zenodo
Year: 2024

description: Bullying has become a pervasive issue in educational environments, particularly in middle schools where social dynamics are complex and ever-changing. This study examines the psychological, academic, and social effects of bullying on middle school students. A mix of qualitative and quantitative methods was employed, including surveys and interviews from a diverse student population. The findings reveal significant associations between bullying experiences and negative outcomes, including anxiety, depression, decreased academic performance, and social withdrawal. The implications of these results highlight the need for effective anti-bullying programs and interventions in schools.
Eastern Mediterranean and the Middle East Region: Enhancing Decarbonization of Power Generation Through Electricity Trade
Creators: name: Taliotis, Constantinos
name: Karmellos, Marios
name: Fylaktos, Nestor
name: Zachariadis, Theodoros
Publisher: name: Zenodo
Year: 2022
Subjects: electricity systems
material implications
supply chain redesign
low-carbon development

description: The region of the Eastern Mediterranean and Middle East (EMME) is very diverse, comprising countries with rich fossil fuel reserves, which are net energy exporters, and countries that heavily rely on energy imports. This policy brief aims to highlight the potential benefits offered by a future enhancement in electricity trade across the region. A model representing the national electricity supply system of seventeen EMME countries is developed and used to assess alternative scenarios where trade is limited or enhanced. Relevant implications in terms of renewable energy deployment, greenhouse gas emissions, and overall system costs are then quantified. The scenario results can assist in the identification of potential net exporters of carbonneutral electricity, markets for electricity imports within the region, as well as key transit countries.
description: This material has been produced under the Climate Compatible Growth (CCG) programme, which brings together leading research organizations and is led out of the STEER centre, Loughborough University. CCG is funded by UK aid from the UK government. However, the views expressed herein do not necessarily reflect the UK government's official policies.
Variable allelic expression of imprinted genes at the Peg13, Trappc9, Ago2 cluster in single neural cells.
Creators: name: Claxton, Michael
name: Pulix, Michela
name: Seah, Michelle KY
name: Bernardo, Ralph
name: Zhou, Peng
name: Aljuraysi, Sultan
name: Liloglou, Triantafillos
name: Arnaud, Philippe
name: Kelsey, Gavin
name: Messerschmidt, Daniel M
name: Plagge, Antonius
Publisher: name: Apollo - University of Cambridge Repository
Year: 2022
Subjects: Cell and Developmental Biology
genomic imprinting
allelic expression
single-cell analysis
neurosphere
neural stem cell
Peg13
Trappc9
Ago2

description: Peer reviewed: True
description: Acknowledgements: We would like to thank all staff of the animal facility for their dedicated work. We would also like to thank Abigail Clark and Megan Green for contributions to early stages of the project.
description: Genomic imprinting is an epigenetic process through which genes are expressed in a parent-of-origin specific manner resulting in mono-allelic or strongly biased expression of one allele. For some genes, imprinted expression may be tissue-specific and reliant on CTCF-influenced enhancer-promoter interactions. The Peg13 imprinting cluster is associated with neurodevelopmental disorders and comprises canonical imprinted genes, which are conserved between mouse and human, as well as brain-specific imprinted genes in mouse. The latter consist of Trappc9, Chrac1 and Ago2, which have a maternal allelic expression bias of ∼75% in brain. Findings of such allelic expression biases on the tissue level raise the question of how they are reflected in individual cells and whether there is variability and mosaicism in allelic expression between individual cells of the tissue. Here we show that Trappc9 and Ago2 are not imprinted in hippocampus-derived neural stem cells (neurospheres), while Peg13 retains its strong bias of paternal allele expression. Upon analysis of single neural stem cells and in vitro differentiated neurons, we find not uniform, but variable states of allelic expression, especially for Trappc9 and Ago2. These ranged from mono-allelic paternal to equal bi-allelic to mono-allelic maternal, including biased bi-allelic transcriptional states. Even Peg13 expression deviated from its expected paternal allele bias in a small number of cells. Although the cell populations consisted of a mosaic of cells with different allelic expression states, as a whole they reflected bulk tissue data. Furthermore, in an attempt to identify potential brain-specific regulatory elements across the Trappc9 locus, we demonstrate tissue-specific and general silencer activities, which might contribute to the regulation of its imprinted expression bias.
THE EFFECTS OF CLASSROOM ENVIRONMENT ON STUDENT LEARNING
Creators: name: Raimqulova, Sitora
Publisher: name: Zenodo
Year: 2024

description: The classroom environment plays a pivotal role in shaping the educational experiences and outcomes of students. This article examines how various elements of the classroom, including physical layout, social atmosphere, and emotional climate, influence student engagement, motivation, and academic performance. Through an extensive review of literature and empirical studies, this paper highlights the critical components of a conducive learning environment. The findings suggest that an optimal classroom environment fosters better student learning outcomes, encourages collaborative learning, and supports emotional well-being. As such, educators, policymakers, and school administrators must prioritize the design and maintenance of effective classroom environments to enhance students' educational experiences.
Dynamic tangential contact of rough surfaces in stick-slip microdrives: modeling and validation using the method of dimensionality reduction
Creators: name: Nguyen Ha Xuan
name: Teidelt Elena
name: Popov Valentin, L.
name: Fatikow Sergej
Publisher: name: Физическая мезомеханика
Year: 2014
Subjects: STICK-SLIP MICRODRIVE
PIEZOELECTRIC ACTUATOR
TANGENTIAL CONTACT
ROUGHNESS
METHOD OF DIMENSIONALITY REDUCTION

description: The dynamic tangential contact of rough surfaces of frictional elements of a stick-slip microdrive is theoretically investigated. By applying the method of dimensionality reduction, the contact areas of the frictional partners are modeled such that the physical properties of the contact can be fully considered and the influence of the roughness is taken into account. The dynamics of the microscopic rough contact is combined with a macroscopic movement of the drive runner in a hybrid dynamic simulation. The numerical results show a good agreement with experimental data. Furthermore, an analytical relation between maximal tangential contact displacement and normal force applied on the contact is analyzed, allowing the contact behavior to be theoretically predicted.
USING DIGITAL TECHNOLOGIES IN ENGLISH LANGUAGE LEARNING
Creators: name: Matmuratov, Nurabulla
Publisher: name: Zenodo
Year: 2024

description: In recent years, digital technologies have revolutionized various sectors, and education is no exception. In particular, the teaching and learning of languages, including English, have undergone significant transformations. This article explores the application of digital technologies in English language learning, highlighting both the benefits and challenges of these innovations. We will examine how these tools are shaping the future of language education and discuss strategies for effectively incorporating them into the learning process.
title: Rosmarinus spp. Δεντρολίβανο. Η χρήση του στην Κοσμητολογία.
title: Rosmarinus spp. Its use in Cosmetology.
titleType: AlternativeTitle
Creators: name: Μπάρδη, Μαρία
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Δενδρολίβανο
Ροσμαρινικό οξύ
Καφεϊκό οξύ
Φαινολικά συστατικά
Αντιοξειδωτικές ιδιότητες

description: Το φυτικό βασίλειο έχει υπηρετήσει την ανθρωπότητα εδώ και αιώνες στην επίτευξη του ευ ζην. Διαθέτει μία απέραντη ποικιλία βιοδραστικών συστατικών και τα οποία καλύπτουν μία μεγάλη περιοχή δράσεων όπως είναι η ενυδάτωση, η λεύκανση, η αντιγήρανση, ο αρωματισμός κ.α. Το δενδρολίβανο είναι ένας πολυετής αρωματικός και καλλωπιστικός θάμνος , που φύεται σχεδόν σε όλη την υφήλιο και ιδιαίτερα στη 􏰃εσόγειο. Η βιομηχανία παρασκευής καλλυντικών προϊόντων με τις εξελιγμένες μεθόδους εξαγωγής που διαθέτει, μπόρεσε να ανακαλύψει όλα τα βιοδραστικά συστατικά του (ροσμαρινικό οξύ, καρνοσόλη, καφεϊκό οξύ κ.α.) και να τα χρησιμοποιήσει ικανοποιητικά ως ενεργά συστατικά ομορφιάς. Οι προοπτικές έρευνας και ανάπτυξης για τα συστατικά του δενδρολίβανου, από όλα τα μέρη του φυτού, είναι πολλές για το μέλλον. Σήμερα χρησιμοποιείται για τις αντιοξειδωτικές, τιςαντιβακτηριδιακές,τιςλευκαντικές,τιςκαθαριστικές,τουιδιότητεςκαι άλλες.Σε αρκετές ιδιότητές του ο μηχανισμός δράσης των συστατικών του παραμένει υπό διερεύνηση , όπως και ο τρόπος παρασκευής νέων εναλλακτικών, «πράσινων» καλλυντικών, με βάση το δενδρολίβανο.
UNDERSTANDING MECHANICAL PROPERTIES OF LIGNIN FROM OIL PALM BIOMASS USING ADVANCED COMPUTATIONAL TECHNIQUES
Creators: name: Gomez Jaraba, Silvio Carlos
name: Oñate Gutierrez, Jesus A.
name: Combariza, Aldo F.
Publisher: name: Zenodo
Year: 2023

description: Poster of Participation in the LatinXChem X/Twitter Conference.
Abstract: Palm oil by-products, such as empty fruit bunches (EFB), are valuable feedstocks for polymer composites (Momoh and Osofero, 2020). Solid palm oil biomass is viable for bio-oil, bioethanol and lignin, used in adhesives, composites and biofuels.
Lignin, a key component of lignocellulose with cellulose and hemicellulose, is abundant in plant biomass (Beaucamp et al., 2022). It provides strength and rigidity, being the second most abundant biopolymer after cellulose. It is a complex polymer with a three-dimensional structure and various functional groups, depending on the material and method of production.
Studies highlight the applications of lignin in the paper industry and its transformation into functional polymers with unique properties (Gao and Fatehi, 2019). In addition, lignin has been shown to improve the mechanical properties of bioplastics (Mariana et al., 2021).
The objective is to develop a computational atomistic model based on experimental data of structural characterization of oil palm lignin, in order to improve the fabrication of biocomposites.
Off-grid Renewable Energy Investment in Zambia: Demand-side and Sub-national Constraints
Creators: name: Maboshe, Mashekwa
name: Bickersteth, Sam
name: Hirmer, Stephanie
Publisher: name: Zenodo
Year: 2022
Subjects: renewable energy
investment
anchor sectors
planning
zambia

description: Zambia has large unexploited potential in renewable energy (RE) sources such as solar, wind, and biomass . However, 85% of the country's electricity generation is dominated by hydropower. To better manage the risk of climate change, and improve rural access to clean energy, the government is actively promoting investment in other RE, especially in rural and low-income areas. Using 11 expert interviews and document reviews, we find that poor affordability and weak sub-national planning structures in rural and low-income areas are a significant threat to attaining Zambia's RE targets. Conducting detailed demand assessments, introducing targeted consumer subsidies, and adequately funding sub-national energy planning would greatly improve the viability of Zambia's RE sector.
description: This material has been produced under the Climate Compatible Growth (CCG) programme, which brings together leading research organizations and is led out of the STEER centre, Loughborough University. CCG is funded by UK aid from the UK government. However, the views expressed herein do not necessarily reflect the UK government's official policies.
Influence of the alignment of load and oscillation on the frictional shakedown of an elastic rolling contact with Coulomb friction
Creators: name: Wetter Robbin
name: Popov Valentin, L.
Publisher: name: Физическая мезомеханика
Year: 2014
Subjects: ELASTIC ROLLING CONTACT
COULOMB FRICTION
VIBRATIONS
FRICTIONAL SHAKEDOWN
RATCHETING
METHOD OF DIMENSIONALITY REDUCTION

description: We examine frictional shakedown of a three dimensional elastic rolling contact. Slight oscillatory rolling of one contacting body varies the normal pressure distribution. In turn this causes incremental sliding processes and a macroscopic rigid body motion. We consider two settings: tangential force and rolling direction aligned parallel and perpendicular to each other. In both cases, the slip ceases after the first few periods and a safe shakedown occurs if the oscillation is sufficiently small. Otherwise ratcheting occurs and the accumulated slip leads to a continuing rigid body motion. Numerical simulations with Kalker’s and Vollebregt’s software CONTACT show that the rolling direction leads to differences in the contact region and the traction distribution. Using the method of dimensionality reduction we derive the analytical shakedown limits for the tangential load and the oscillation amplitude. The results show strong agreement with experimental data and allow the accurate prediction of the shakedown displacement and the maximum tangential load capacity in the shakedown state. It shows that a perpendicular alignment of force and rolling direction increases the final displacement in case of shakedown as well as the incremental shift in case of ratcheting.
UNLOCKING THE MYSTERIES OF WATER: A MD COMPUTATIONAL EXPLORATION
Creators: name: Gomez Jaraba, Silvio Carlos
name: Gomez Martinez, Luis Gabriel
name: Combariza, Aldo F.
Publisher: name: Zenodo
Year: 2023

description: Poster of participation in the VIII Encuentro Nacional de Quimicos Teoricos y Computacionales - Universidad Nacional de Colombia - Bogota. 
Abstract: Water is a fundamental substance in the universe, playing a critical role in the formation and survival of life. It serves as a medium for many metabolic reactions and is an indicator of habitable environments. Its unique chemical properties such as its solvent ability, stability, and facilitation of many chemical processes make it an essential biological component. Additionally, water is involved in the transport of nutrients and waste products, regulates body temperature, and maintains the pH balance of many biochemical reactions [1-3]. Molecular Dynamics (MD) is a powerful technique for studying interactions and features of water under controlled conditions, such as temperature and pressure. In this project, we aim to describe the Physc. Chem. behavior of liquid water through DM simulations, focusing our efforts on analyzing the intra and intermolecular interactions of water molecules, to gain insights into its characteristics in a controlled environment. To achieve our objective, we will use several Force Fields (FF) to compare between our MD trajectories and reported experimental data [4]. Among the conventional models for water, the rigid and non-polarizable models are the simplest ones and most computationally efficient. The TIP3P, SPC (3-Points Models), TIP4P (4-Points Model), and TIP5P (5-Point Model) are well-known water models. However, the parameters and mathematical functions of these models may vary, resulting in some models providing more accurate results than others for calculated properties. Our aim is to achieve a comprehensive understanding of water properties and characteristics obtained from statistical mechanics, which will provide a solid base  in fields such as drug design, materials science, and environmental chemistry.
Influence of the normal force and contact geometry on the static force of friction of an oscillating sample
Creators: name: Milahin Natalie
name: Starcevic Jasminka
Publisher: name: Физическая мезомеханика
Year: 2014
Subjects: TANGENTIAL CONTACT
CONTACT STIFFNESS
ULTRASONIC OSCILLATIONS

description: The paper is devoted to an experimental and theoretical investigation of the static friction force between a rapidly oscillating sample and a steel plate. The static frictional force is studied experimentally as function of the oscillating amplitude, the normal force and the contact geometry. A simplest model of tangent contact with a constant friction coefficient is proposed and shows a good agreement with experiment. The static friction force is proved to be a universal function of the ratio of the oscillation amplitude, the indentation depth and to the friction coefficient.
title: Ενεργειακή διαχείριση στην ελληνική βιομηχανία. Εφαρμογές με Φ/Α και ΑΠΕ
title: Energy management in the greek industry - Natural gas and renewable energy sources applications
titleType: AlternativeTitle
Creators: name: Λαγδάς, Ευάγγελος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Βιομηχανία
Φυσικό αέριο
ΑΠΕ
Ανανεώσιμες πηγές ενέργειας
Διαχείριση ενέργειας
Ελληνική βιομηχανία

description: Η παρούσα διπλωματική εργασία αποσκοπεί στην ανάδειξη της σημασίας της ενέργειας στον χώρο της βιομηχανίας. Παρουσιάζεται η ποικιλία που παρατηρείται στην ένταση και την ενεργειακή ανάγκη κάθε κλάδου ανάλογα με την σύνθεση του. Επιπλέον επικεντρώνεται στην ανάλυση της διαχείρισης ενέργειας στην ελληνική βιομηχανία, φανερώνοντας την τάση που ακολουθείται τα τελευταία έτη και πως διαμορφώνεται σήμερα σε τεχνικό και οικονομικό πλαίσιο. Σε μια περίοδο που το φ/α και οι ΑΠΕ κερδίζουν όλο και περισσότερο χώρο με εφαρμογές στην παραγωγή και κατανάλωση ενέργειας σε κάθε κλάδο, στην παρούσα εργασία αναλύονται περιπτώσεις κατά τις οποίες οι βιομηχανίες στράφηκαν σε εναλλακτικές μεθόδους για να καλύψουν τις ανάγκες τους. Δίνεται έμφαση στα κίνητρα, τα εμπόδια, τις τεχνικές λεπτομέρειες και τέλος τα οφέλη που είχε κάθε περίπτωση ξεχωριστά τόσο στην διεθνή όσο και στην ελληνική βιομηχανία.
Experimental investigation of the adhesive contact of an elastomer
Creators: name: Voll Lars Bastian
name: Popov Valentin, L.
Publisher: name: Физическая мезомеханика
Year: 2014
Subjects: ADHESION
ELASTOMER
ELASTIC CONTACT
VISCOELASTIC CONTACT
TEMPERATURE DEPENDENCE
VELOCITY DEPENDENCE
SEALS
VALVES

description: The present work is an experimental study of adhesion between an elastomer and a rigid cylindrical indenter. The experimental characterization was carried out using a specially developed apparatus. Adhesive force was measured as function of contact geometry, pull-off velocity, normal force, temperature, waiting time, and material properties. Experimental results are compared with existing theoretical models for adhesion of elastic and viscoelastic bodies. Our study shows that the adhesive force between the studied elastomer and a steel cylinder is determined by completely different mechanisms than assumed in the Kendall’s theory. In particular, it does not depend on the surface energy and is almost entirely dominated by the viscosity of the elastomer.
Energy Planning in Kenya: Understanding Perceptions of Gender Equality and Social Inclusion (GESI)
Creators: name: Onyango, Lucille
name: Hirmer, Stephanie
name: Tomei, Julia
Publisher: name: Zenodo
Year: 2022
Subjects: gender equality
social inclusion
energy planning & access
marginalised groups
decisionmakers

description: Explicit consideration of marginalized groups – ethnic minorities, women and girls, persons with disabilities, refugees, youth, internally displaced persons, and the elderly – in energy planning is vital to ensure that the benefits of access to modern energy for all are fully realized. Without this, just transitions to climate compatible energy systems cannot be guaranteed. While Kenya has made progress in mainstreaming gender equality, other marginalized groups are often not accounted for in energy planning. Drawing on 18 interviews with key decision-makers involved in energy planning at national and county levels, this research investigated perceptions towards Gender Equality and Social Inclusion (GESI). In order to mainstream GESI in energy planning in Kenya, this policy brief points to some ways forward. We find finance and human resourcing, capacity strengthening, and greater participation crucial to achieving more inclusive energy systems in Kenya.
description: This material has been produced under the Climate Compatible Growth (CCG) programme, in collaboration with UK Pact. CCG brings together leading research organizations and is led out of the STEER centre, Loughborough University. CCG is funded by UK aid from the UK government. However, the views expressed herein do not necessarily reflect the UK government's official policies.
Simplified simulation of fretting wear using the method of dimensionality reduction
Creators: name: Qiang, Li
name: Filippov Alexander, E.
name: Dimaki Andrey, V.
name: Chai Young, S.
name: Popov Valentin, L.
Publisher: name: Физическая мезомеханика
Year: 2014
Subjects: FRETTING WEAR
METHOD OF DIMENSIONALITY REDUCTION
NUMERICAL SIMULATION

description: We study the problem of wear of a rotationally symmetric profile subjected to oscillations with small amplitude. Under these conditions, sliding occurs at the boundary of the contact area while the inner parts of the contact area may still stick. In a recent paper, Dimaki with colleagues proposed a numerically exact simulation procedure based on the method of dimensionality reduction (MDR). This drastically reduced the simulation time compared with conventional finite element simulations. The proposed simulation procedure requires carrying out the direct and the inverse MDR transformations in each time step. This is the main time consuming operation in the proposed method. However, solutions obtained with this method showed a remarkable simplicity of the development of wear profiles in the MDR space. In the present paper, we utilize these results to formulate an approximate model, in which the wear is simulated directly in the onedimensional space without using integral transformations. This speeds up the simulations of wear by further several orders of magnitude.
MPEC 2024-R315 : 2024 RW15
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 RW15

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Compositional Diffusion-Based Continuous Constraint Solvers
Creators: name: Yang, Zhutian
name: Mao, Jiayuan
name: Du, Yilun
name: Wu, Jiajun
name: Tenenbaum, Joshua B.
name: Lozano-Pérez, Tomás
name: Kaelbling, Leslie Pack
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This paper introduces an approach for learning to solve continuous constraint satisfaction problems (CCSP) in robotic reasoning and planning. Previous methods primarily rely on hand-engineering or learning generators for specific constraint types and then rejecting the value assignments when other constraints are violated. By contrast, our model, the compositional diffusion continuous constraint solver (Diffusion-CCSP) derives global solutions to CCSPs by representing them as factor graphs and combining the energies of diffusion models trained to sample for individual constraint types. Diffusion-CCSP exhibits strong generalization to novel combinations of known constraints, and it can be integrated into a task and motion planner to devise long-horizon plans that include actions with both discrete and continuous parameters. Project site: https://diffusion-ccsp.github.io/
Coefficient of friction between a rigid conical indenter and a model elastomer: influence of local frictional heating
Creators: name: Dimaki Andrey, V.
name: Popov Valentin, L.
Publisher: name: Физическая мезомеханика
Year: 2014
Subjects: ТРЕНИЕ СКОЛЬЖЕНИЯ
ЭЛАСТОМЕР
МАТЕРИАЛ КЕЛЬВИНА
ФРИКЦИОННЫЙ РАЗОГРЕВ
SLIDING FRICTION
ELASTOMER
KELVIN MATERIAL
FRICTIONAL HEATING

description: We investigate the coefficient of friction between a rigid cone and an elastomer with account of local heating due to frictional dissipation. The elastomer is modeled as a simple Kelvin body and an exponential dependency of viscosity on temperature is assumed. We show that the coefficient of friction is a function of only two dimensionless variables depending on the normal force, sliding velocity, the parameter characterizing the temperature dependence as well as shear modulus, viscosity at the ambient temperature and the slope of the indenter. One of the mentioned dimensionless variables does not depend on velocity and determines uniquely the form of the dependence of the coefficient of friction on velocity. Depending on the value of this controlling variable, the cases of weak and strong influence of temperature effects can be distinguished. In the case of strong dependence, a generalization of the classical master curve procedure introduced by Grosch is suggested by using both horizontal and vertical shift factors.
title: Συγκριτική ανάλυση εργαλείων για μεγάλα σύνολα δεδομένων τροχιάς
title: Comparative analysis of tools for big trajectory datasets
titleType: AlternativeTitle
Creators: name: Δέδες, Χρήστος
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2023
Subjects: subject: Big data
subject: Μεγάλα δεδομένα
subject: Δεδομένα τροχιάς
subject: Trajectory data

description: Με την ολοένα αυξανόμενη χρήση συσκευών GPS που ενσωματώνονται σε μέσα μεταφοράς και συσκευές, όπως αυτοκίνητα, πλοία, αεροπλάνα και κινητά τηλέφωνα, διατίθενται όλο και μεγαλύτεροι όγκοι δεδομένων τροχιάς που καταγράφουν τις κινήσεις οχημάτων και ανθρώπων, κάτι που είναι χρήσιμο σε πολλούς τομείς εφαρμογών, όπως οι μεταφορές, η διαχείριση της κυκλοφορίας (εναέριας και επίγειας) και οι υπηρεσίες που βασίζονται στην τοποθεσία. Ως αποτέλεσμα, έχουν προταθεί και έχουν προκύψει πολλά συστήματα διαχείρισης και ανάλυσης δεδομένων τροχιάς. Πολλοί όμως από τους υπάρχοντες αλγορίθμους επικεντρώνονται στη βελτιστοποίηση των τεχνικών αποθήκευσης και επεξεργασίας των μεγάλων δεδομένων σε ένα μόνο μηχάνημα. Ωστόσο, λόγω της τεράστιας αύξησης του όγκου των δεδομένων, ο αριθμός των τροχιών υπερβαίνει την ικανότητα αποθήκευσης και επεξεργασίας ενός μόνο μηχανήματος και απαιτεί ανάλυση τροχιών μεγάλης κλίμακας σε κατανεμημένα περιβάλλοντα. Με κίνητρο την ανάγκη εύρεσης κατάλληλων συστημάτων, τόσο απλών όσο και κατανεμημένων, προχωράμε στην παράθεση και τη σύγκριση, μέσω πινάκων, ορισμένων πρόσφατων συστημάτων επεξεργασίας και ανάλυσης μεγάλων δεδομένων τροχιάς. Ιδιαίτερη έμφαση δίνεται σε τεχνικές όπως η ευρετηρίαση, η διαμέριση και η επεξεργασία ερωτημάτων. Με αυτόν τον τρόπο, αυτή η εργασία αποτελεί έναν χρήσιμο συγκεντρωτικό οδηγό και μια συνεπτυγμένη ανάλυση των ήδη υπαρχόντων συστημάτων που υπάρχουν στη βιβλιογραφία.