cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Strömungscharakteristika von hochverdünnten kationischen Tensidlösungen in Strömungsgeometrien mit gekrümmten Stromlinien
Creators: name: Witt, Cornelia
Publisher: name: Technische Universität Dortmund
Year: 2006
Subjects: subject: Couette-Strömung
subject: Gekrümmter Kanal
subject: Lichtschnittvisualisierung
subject: Particle Image Velocimetry
subject: Scherinduzierte Struktur
subject: Tensid
subject: 660

description: Die Entwicklung der in hochverdünnten kationischen Tensidlösungen zu findenden Scherinduzierten Struktur und ihr Einfluss auf unterschiedliche Strömungsformen werden für die beiden Tenside TTASal (Tetradecyltrimethylammoniumsalicylat) und HTASal (Hexadecyltrimethylammoniumsalicylat) bei Konzentrationen von 1,8 mM bzw. 0,8 mM untersucht und die Ergebnisse denen einer reinen Wasserströmung gegenübergestellt. Als Geometrien werden zwei Anordnungen mit gekrümmten Stromlinien, ein Searle-System und ein gekrümmter Kanal mit großem Höhe zu Breite Verhältnis, betrachtet. Bei der Untersuchung werden die jeweiligen Strömungsmuster durch eine Umgebungslichtvisualisierung ermittelt und die die Strömungsformen charakterisierenden Geschwindigkeitsfelder mit Particle Image Velocimetry (PIV) vermessen. Ferner wird die Gestalt und Entwicklung der Scherinduzierten Struktur mit einer Lichtschnittvisualisierung untersucht. Bei der Gegenüberstellung der Ergebnisse zeigen sich bereits in der Umgebungslichtvisualisierung deutliche Unterschiede, die mittels PIV quantifiziert werden können. So ergeben sich für die TTASal- Lösung, neben einem bei geringen Geschwindigkeiten zu findenden newtonschen Bereich, auch bei einer darauf zu beobachtenden Scherinduzierten Strömungsform im Vergleich zu Wasser noch entfernt ähnliche Geschwindigkeitsprofile, die jedoch zeitabhängig sind und verringerte Bewegungen senkrecht zur Hauptströmungsrichtung aufweisen. Für das HTASal ist diese Tendenz weiter verstärkt, doch auch das Geschwindigkeitsprofil in Hauptströmungsrichtung ist hier verändert. Im Searle-System werden Geschwindigkeitsbänder, d.h. zusammenhängende Regionen mit jeweils konstanter Geschwindigkeit, gemessen, die sich im Spalt vergleichsweise unabhängig voneinander bewegen. Im gekrümmten Kanal ähnelt das Profil dem einer Kolbenströmung. Ähnliche Unterschiede zeigen sich auch bei der Lichtschnittvisualisierung. Im Searle-System werden für das TTASal fadenartige Strukturen beobachtet. Beim HTASal tritt zunächst eine kammartige Strukturierung auf, die über blasenartige Formen mit der Zeit einer optischen Vergleichmäßigung weicht. Im Kanal sind die mit dieser Methode zu beobachtenden Unterschiede zwischen den Lösungen nicht so groß, allerdings wird für das HTASal eine etwas stärker ausgeprägte Struktur gefunden. Diese Ähnlichkeit ist hier hauptsächlich darin begründet, dass der Kanal ein offenes Strömungssystem ist, während die Couette-Anordnung ein geschlossenes darstellt.
Evolution of binary seeds in collapsing protostellar gas clouds
Creators: name: Satsuka, Tatsuya
name: Tsuribe, Toru
name: Tanaka, Suguru
name: Nagamine, Kentaro
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We perform three dimensional smoothed particle hydrodynamics (SPH) simulations of gas accretion onto the seeds of binary stars to investigate their short-term evolution. Our simulation setup is more realistic compared to the previous works by taking into account of dynamically evolving envelope with non-uniform distribution of gas density and angular momentum of accreting flow. Our initial condition includes a seed binary and a surrounding gas envelope, modelling the phase of core collapse of gas cloud when the fragmentation has already occurred. We assume that the seed binary has no eccentricity and no growth by gas accretion. The envelope is assumed to be an isothermal gas with no self-gravity. We run multiple simulations with different values of initial mass ratio $q_0$ (the ratio of secondary over primary mass) and gas temperature, and find a critical value of $q_{\rm c} = 0.25$ which distinguishes the later evolution of mass ratio $q$ as a function of time. If $q_0$ >~ $q_{\rm c}$, the secondary seed grows faster and $q$ increases monotonically towards unity. If $q_0$ ~ $q_{\rm c}$ evolves towards an equal-mass binary star, and that with $q_0$
description: 12 pages, 9 figures, MNRAS accepted
A global inversion-symmetry-broken phase inside the pseudogap region of YBa$_2$Cu$_3$O$_y$
Creators: name: Zhao, L.
name: Belvin, C. A.
name: Liang, R.
name: Bonn, D. A.
name: Hardy, W. N.
name: Armitage, N. P.
name: Hsieh, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The phase diagram of cuprate high-temperature superconductors features an enigmatic pseudogap region that is characterized by a partial suppression of low energy electronic excitations. Polarized neutron diffraction, Nernst effect, THz polarimetery and ultrasound measurements on YBa$_2$Cu$_3$O$_y$ suggest that the pseudogap onset below a temperature T* coincides with a bona fide thermodynamic phase transition that breaks time-reversal, four-fold rotation and mirror symmetries respectively. However, the full point group above and below T* has not been resolved and the fate of this transition as T* approaches the superconducting critical temperature T$_c$ is poorly understood. Here we reveal the point group of YBa$_2$Cu$_3$O$_y$ inside its pseudogap and neighboring regions using high sensitivity linear and second harmonic optical anisotropy measurements. We show that spatial inversion and two-fold rotational symmetries are broken below T* while mirror symmetries perpendicular to the Cu-O plane are absent at all temperatures. This transition occurs over a wide doping range and persists inside the superconducting dome, with no detectable coupling to either charge ordering or superconductivity. These results suggest that the pseudogap region coincides with an odd-parity order that does not arise from a competing Fermi surface instability and exhibits a quantum phase transition inside the superconducting dome.
description: 14 pages main text, 4 figures, 11 pages supplementary information, Nature Physics (2016)
Analyse flüchtiger Metaboliten von der Ausatemluft mittels Ionenmobilitätsspektrometer
Creators: name: Ruzsányi, Veronika
Publisher: name: Technische Universität Dortmund
Year: 2005
Subjects: subject: Flüchtige Metaboliten
subject: Atemluft
subject: Ionenmobilitätsspektrometrie (IMS)
subject: Bakterien
subject: 660

description: Es ist seit langem bekannt, dass die Detektion von Metaboliten, insbesondere der flüchtigen organischen Verbindungen, der Atemluft als nichtinvasive diagnostische Methode zur Lieferung von Informationen zahlreicher unterschiedlicher metabolischer Prozesse des menschlichen Körpers benutzt werden kann. Im Rahmen dieser Arbeit wurde daher ein am ISAS - Institute for Analytical Sciences entwickeltes lonenmobilitätsspektrometer (IMS) für die Atemluftanalyse modifiziert, sowie die Anwendbarkeit der entwickelten on-line, in-situ Methode in der klinischen Diagnostik an ausgewählten Patientengruppen gezeigt. In der Entwicklung des Systems wurde die für die Atemluftanalyse geeignete Strahlungsquelle ausgewählt, sowie der Probeneinlass des IMS aufgrund der hohen relativen Feuchte der Atemluft (nahe 100%), welche einen negativen Einfluss auf das IMS-Signal verursacht, optimiert. Dabei gelingt durch die Kopplung des IMS mit einer Multikapillarsäule (MCC) die on-line Abtrennung der Feuchte am Anfang der Analyse, eine schnelle Trennung komplexer Gemische und eine sofortige Detektion der getrennten Analyten mittels IMS. Das hier entwickelte Verfahren wurde in einer Kooperation mit der Lungenklinik in Hemer zur Untersuchung von Patienten mit infektiösen Lungenkrankheiten in-situ eingesetzt. Insgesamt 30 Patienten mit verschiedenen Lungenkrankheiten und den häufigsten Infektionserkrankungen der Atemwege konnten in der Lungenklinik Hemer untersucht werden. Anhand der Atemluftanalyse konnte ein charakteristisches Muster der nur bei diesen Patienten vorgekommenen Peaks ermittelt werden. Daneben wurden 72 gesunde Mitarbeiter des ISAS und der Lungenklinik Hemer untersucht, um das Atemluftmuster einer Kontrollgruppe zu bestimmen. Da Infektionen oft durch Bakterien ausgelöst sind, wurde überprüft, ob die durch Bakterien in-vitro produzierten Metaboliten eine Korrelation mit der in der Atemluft bei Infektionen der Respirationstrakt auftretenden Komponenten zeigen. Daher wurden die Emissionen von Reinkulturen ausgewählter infektiöser Bakteriumsspezies, die im Hygieneinstitut in Iserlohn gezüchtet wurden, mittels IMS vermessen. Dies zeigte, dass sich die Methode ebenfalls zur on-line Detektion von Metaboliten verschiedner Bakteriumsarten eignet.
Biogeochemical interactions in the hyporheic zone of a sand-slug stream : Creightons-Branjee Creek, Victoria
Creators: name: Vanderkruk., Kellie
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Matthias Möring-Hesse (Hg.) (2005): Streit um die Gerechtigkeit. Themen und Kontroversen im gegenwärtigen Gerechtigkeitsdiskurs, ISBN: 3899742117, Schwalbach/Ts., Wochenschau-Verlag, 206 Seiten, 18.80 Euro
Creators: name: Martens, Helmut
Publisher: name: Lucius & Lucius Verlagsgesellschaft
Year: 2006
Subjects: subject: 300
subject: 650

description: Arbeit
Ethiopian Field Epidemiology and Laboratory Training Program (EFETP) Compiled Body of Works in Field Epidemiology
Creators: name: Hailu, Engdayehu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: Abstract Introduction: Measles is an acute, highly contagious viral disease caused by measles virus. Measles is the fifth killer disease among <5 Yrs of age worldwide. Measles case account for 4% of childhood mortality in Ethiopia. Suspected outbreak of measles was investigated to determine risk factors associated with and to take preventive and control measures based on the findings. Methods: We conducted a descriptive study followed by 1:1 unmatched case control study. EpiInfo7 were used for data processing and analysis. Result: A total of 67 measles cases (5 IgM positive) with median age of 4 year (Q1=0.2; Q3=10) and no deaths reported. The overall attack rate in Kebele was 113 cases with <1, 1-4 and 10-14 year children recorded the highest attack rate of 343, 392 and 244 cases per 10,000 population respectively. The odds of illness in those vaccinated were 0.16 times less than those who were not vaccinated [95%CI (0.07-0.34)]. Contact with the case [95%CI (1.95-8.35)] and <5 year malnutrition [95%CI (1.47-7.82) were significantly associated with the disease. Cases from households of family size >7 persons and illiterate parents were 3.02 times [95%CI (1.49-6.10)] and 4 times [95%CI (1.93-8.21)] more likely to develop measles respectively. Conclusion: An outbreak of measles occurred in Melgano Doya Kebele of Bona Zuria Woreda. Unvaccination, having contact with case, living in crowded room, <5 children malnutrition and illiteracy of parents were associated with contracting measles. <5 years children vaccination, case management, health education and active case search undertaken as prevention and control measure. Keywords: Measles outbreak, Melgano Doya, Bona Zuria, Ethiopia
A Study on Customer Satisfaction Towards After-Sales Service Provided by Apple Inc with Special Reference to Coimbatore City
Creators: name: Vignesh A, Sasikala A
Publisher: name: Zenodo
Year: 2025

description: After-sales service, is any service provided after a customer has purchased a product. The business reasoning behind after-sales support is that it can contribute to brand loyalty and repeat sales; happier customers tend to create repeat customers.This study is to identify the Customer satisfaction level on the aftersales servicesprovided by Apple Inc. The data has been collected from 150 respondents in Coimbatore city.Statisticaltools such as percentage analysis, average ranking analysis, weighted average analysis, Chi-SquareAnalysis and Correlation Coefficient Analysis have been used to analyze the data.
title:  Oltre le frontiere linguistiche. La sfida delle traduzioni di opere filosofiche fra il Lungo Medioevo e il contemporaneo
Creators: name: Fernicola  ,  Fabio
Publisher: name: Roma TrE-Press
Year: 2022

description: B@belonline vol. 9 Subversion and resistance in Hegel: paradigms, figures, resonances /Sovversione e resistenza in Hegel: paradigmi, figure, risonanze
Compact Planetary Nebulae in the Galactic Disk: Analysis of the Central Stars
Creators: name: Moreno-Ibáñez, Manuel
name: Villaver, Eva
name: Shaw, Richard A.
name: Stanghellini, Letizia
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have obtained multi-wavelength observations of compact Galactic planetary nebulae (PNe) to probe post-Asymptotic Giant Branch (AGB) evolution from the onset of nebular ejection. We analyze new observations from HST to derive the masses and evolutionary status of their central stars (CSs) in order to better understand the relationship between the CS properties and those of the surrounding nebulae. We also compare this sample with others we obtained using the same technique in different metallicity environments: the Large and Small Magellanic Clouds. We work with HST/WFC3 images of 51 targets obtained in a snapshot survey (GO-11657). The high spatial resolution of HST allows us to resolve these compact PNe and distinguish the CS emission from that of their surrounding PNe. The targets were imaged through the filters F200LP, F350LP, and F814W from which we derive Johnson V and I magnitudes. We derive CS bolometric luminosities and effective temperatures using the Zanstra technique, from a combination of HST photometry and ground-based spectroscopic data. We present new unique photometric measurements of 50 CSs, and derived effective temperatures and luminosities for most of them. Central star masses for 23 targets were derived by placing the stars on a temperature-luminosity diagram and compare their location with the best available single star post-AGB evolutionary tracks, the remaining masses were indeterminate most likely because of underestimates of the stellar temperature, or because of substantial errors in the adopted statistical distances to these objects. The distribution of CS masses in the sample of compact PNe is different than sample in the LMC and SMC, but with a median mass of 0.59 solar masses it is similar to other Galactic samples. We conclude that the compact nature of many of the PNe is a result of their large distance, rather than their physical dimension.
description: Published in Astronomy & Astrophysics 593, A29
Deep learning-based estimation of whole-body kinematics from multi-view images
Creators: name: Nguyen, Kien X.
name: Zheng, Liying
name: Hawke, Ashley L.
name: Carey, Robert E.
name: Breloff, Scott P.
name: Li, Kang
name: Peng, Xi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: It is necessary to analyze the whole-body kinematics (including joint locations and joint angles) to assess risks of fatal and musculoskeletal injuries in occupational tasks. Human pose estimation has gotten more attention in recent years as a method to minimize the errors in determining joint locations. However, the joint angles are not often estimated, nor is the quality of joint angle estimation assessed. In this paper, we presented an end-to-end approach on direct joint angle estimation from multi-view images. Our method leveraged the volumetric pose representation and mapped the rotation representation to a continuous space where each rotation was uniquely represented. We also presented a new kinematic dataset in the domain of residential roofing with a data processing pipeline to generate necessary annotations for the supervised training procedure on direct joint angle estimation. We achieved a mean angle error of $7.19^\circ$ on the new Roofing dataset and $8.41^\circ$ on the Human3.6M dataset, paving the way for employment of on-site kinematic analysis using multi-view images.
Structural analysis of the lower plate of the Aegean metamorphic core complex, Ion, Cyclades, Greece
Creators: name: Vandenberg., Leon C.
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Προσδιορισμός βέλτιστων συνθηκών ξήρανσης με ψεκασμό για την παραγωγή προϊόντων σκόνης από ασπράδι, κρόκο και ολόκληρο αβγό
Creators: name: Ζελεσκίδου, Μαρίνα Σωτηρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Ξήρανση με ψεκασμό
Ενζυμική ζύμωση
Αυγό
Spray drying
Enzymatic fermentation
Egg

description: Σκοπός της παρούσας διπλωματικής εργασίας αποτέλεσε η μελέτη, ανάπτυξη και βελτιστοποίηση διεργασίας παραγωγής διαφόρων προϊόντων αβγού σε μορφή σκόνης. Ως πρώτη ύλη χρησιμοποιήθηκε παστεριωμένο ασπράδι αβγού, κρόκου αλλά και ολόκληρο αβγό, ενώ η ξήρανση έλαβε χώρα με ξηραντήρα καταιονισμού. Τα τρία κύρια στάδια της διεργασίας ήταν η ενζυμική ζύμωσης της πρώτης ύλης, η ξήρανση και η συσκευασία. Προσδιορίστηκαν οι βέλτιστες τιμές των παραμέτρων λειτουργίας του ξηραντήρα, ώστε να μεγιστοποιηθεί η απόδοση στερεών, ολική θερμική απόδοση κα απόδοση εξάτμισης της διεργασίας.Αρχικά, αναπτύχθηκε η κατάλληλη διαδικασία ενζυμικής ζύμωσης του παστεριωμένου ασπραδιού με την πραγματοποίηση μιας σειράς δοκιμαστικών μετρήσεων για την εύρεση των ποσοτήτων των αντιδρώντων (ένζυμα, υπεροξείδιο του υδρογόνου), της θερμοκρασίας και του χρόνου αντίδρασης. Στη συνέχεια αναπτύχθηκε η διαδικασία για την παραγωγή σκόνης αβγού και πραγματοποιήθηκε μια σειρά δοκιμαστικών μετρήσεων για την εύρεση των σταθερών παραμέτρων, αλλά και για τον προσδιορισμό του εύρους τιμών των μεταβλητών παραμέτρων της διεργασίας ξήρανσης ψεκασμού. Μέσω του πειραματικού σχεδιασμού απόκρισης επιφανειών (RSM, Response Surface Methodology) και συγκεκριμένα Box-Behnken σχεδιασμού εξετάστηκαν οι επιδράσεις της θερμοκρασίας εισόδου αέρα ξήρανσης, του ρυθμού ροής αέρα ξήρανσης και της πίεσης συμπιεσμένου αέρα-μέσου εκνέφωσης στην απόδοση της διεργασίας ξήρανσης (απόδοση στερών, ολική θερμική απόδοση, απόδοση εξάτμισης).
description: The objective of this work was to research, develop and optimize the production of egg white powder, egg yolk powder, and whole egg powder. The raw materials were pasteurized egg white, egg yolk, and whole egg, and the drying process was spray drying. The three parts of this process were the enzymatic fermentation of the raw materials, drying, and packaging. The target of the optimization was to maximize the process yield (solids), overall efficiency, and evaporation efficiency.The first step was to develop a suitable enzymatic fermentation process for the pasteurized egg white. Preliminary experiments were conducted to determine the amount of the reactants (enzymes, hydrogen peroxide), temperature, and the time of the reaction. Subsequently, a process for egg powder production was developed for each product. A series of initial experiments were performed to determine the values of the constant parameters for the process and to narrow the range of values for the optimization of the process variables. A Response Surface Methodology (RSM), the Box-Behnken design, was then employed to design the optimization experiment. The selected optimization variables were: air inlet temperature, drying air flow rate, and compressed spray-air pressure. Response variables were solids yield, total thermal efficiency, and evaporation efficiency.
Physical effects involved in the measurements of neutrino masses with future cosmological data
Creators: name: Archidiacono, Maria
name: Brinckmann, Thejs
name: Lesgourgues, Julien
name: Poulin, Vivian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Future Cosmic Microwave Background experiments together with upcoming galaxy and 21-cm surveys will provide extremely accurate measurements of different cosmological observables located at different epochs of the cosmic history. The new data will be able to constrain the neutrino mass sum with the best precision ever. In order to exploit the complementarity of the different redshift probes, a deep understanding of the physical effects driving the impact of massive neutrinos on CMB and large scale structures is required. The goal of this work is to describe these effects, assuming a summed neutrino mass close to its minimum allowed value. We find that parameter degeneracies can be removed by appropriate combinations, leading to robust and model independent constraints. A joint forecast of the sensitivity of Euclid and DESI surveys together with a CORE-like CMB experiment leads to a $1σ$ uncertainty of $14$~meV on the summed neutrino mass. However this particular combination gives rise to a peculiar degeneracy between $M_ν$ and the optical depth at reionization. Independent constraints from 21-cm surveys can break this degeneracy and decrease the $1σ$ uncertainty down to $12$~meV.
description: 31 pages, 10 figures. Comments welcome. V2 : section 4 extended, theoretical error included in the LSS forecast
Spacetime killing tensors in general relativity
Creators: name: Van Leeuwen., Edwin Hans
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Local correlations in the attractive 1D Bose gas: from Bethe ansatz to the Gross-Pitaevskii equation
Creators: name: Piroli, Lorenzo
name: Calabrese, Pasquale
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the ground-state properties of an extended one-dimensional Bose gas with pointwise attractive interactions. We take the limit where the interaction strength goes to zero as the system size increases at fixed particle density. In this limit the gas exhibits a quantum phase transition. We compute local correlation functions at zero temperature, both at finite and infinite size. We provide analytic formulas for the experimentally relevant one-point functions $g_2$, $g_3$ and analyze their finite-size corrections. Our results are compared to the mean-field approach based on the Gross-Pitaevskii equation which yields the exact results in the infinite system size limit, but not for finite systems.
description: 16 pages, 8 figures; v2: minor revision
Molecular-based magnetic materials incorporating bis- and tris(pyrazolyl)methane transition metal complexes
Creators: name: Van Langenberg., Kenneth Anthony
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Επίδραση πληρωτικών υλικών στη βιολογική μεθανογένεση
Creators: name: Χατζής, Αλέξανδρος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Βιολογική μεθανογένεση
Πληρωτικά υλικά
Αντιδραστήρες διασταλάζουσας κλίνης
Biological methanation
Packing materials
Trickle bed reactors

description: Η παρούσα διπλωματική εργασία εστιάζει στη διερεύνηση της διεργασίας της υδρογονοτροφικής μεθανογένεσης και συγκεκριμένα, στην εύρεση του κατάλληλου πληρωτικού υλικού που μπορεί να συντελέσει στην αποτελεσματική ακινητοποίηση του τη βιολογικής λεπτής στιβάδας των μικροοργανισμών (βιοφίλμ). Ειδικότερα, πραγματοποιήθηκαν συνεχή πειράματα υδρογονοτροφικής μεθανογένεσης με δύο αντιδραστήρες διασταλάζουσας κλίνης με τη χρήση πληρωτικών υλικών ενεργό άνθρακα (σε μορφή κοκκώδη-pellets) και με raschig rings, με σκοπό την παραγωγή υψηλής καθαρότητας CH4, από μίγμα συνθετικού αερίου σύστασης (%) 80:20/H2:CO2. Δοκιμάστηκαν διάφοροι χρόνοι παραμονής του μίγματος των αερίων και μελετήθηκαν η τιμή του pH, οι συγκεντρώσεις των παραγομένων πτητικών λιπαρών οξέων (Volatile Fatty Acids, VFA), καθώς και οι αποδόσεις των δύο αντιδραστήρων (που λειτουργούσαν εν παραλλήλω) ως προς τη παραγωγή CH4 στο βιοαέριο (ποσότητα και περιεκτικότητα). Τα πειράματα πραγματοποιήθηκαν σε θερμόφιλες συνθήκες, συγκεκριμένα στους 55οC. Από τα πληρωτικά υλικά που χρησιμοποιήθηκαν, ο ενεργός άνθρακας βρέθηκε ότι αποτελεί το καταλληλότερο πληρωτικό υλικό για τους αναερόβιους αντιδραστήρες διασταλάζουσας κλίνης βιομεθανογένεσης, σε σύγκριση με τα (περισσότερο κλασσικά/χρησιμοποιούμενα) raschig rings.
description: The present diploma thesis focuses on the investigation of the process of hydrogenotrophic methanogenesis and more specifically, on finding the appropriate packing material that can be a suitable point of immobilization of the biofilm. In particular, continuous experiments of hydrogenotrophic methanogenesis were performed in two trickle bed reactors with activated carbon (in the form of pellets) and raschig rings to produce high purity CH4, from a mixture of synthetic gas with composition 80:20/H2:CO2. Various gas retention times were tested and parameters like the pH value, VFA concentrations and reactors’ (that were working in parallel) yields for CH4 production (in quality and quantity) were studied. The experiments were performed under thermophilic conditions, specifically at 55oC. From the comparison between the packing materials, activated carbon is the most suitable packing material for biomethanation trickle bed reactors, compared to (more classic/used) raschig rings.
Assessing the Prevalence of Diabetes Mellitus and Impaired Fasting Glucose Level and Their Risk Factors among Federal Police Members at Federal Police Commission Residing In Addis Ababa, Ethiopia between April and May 2015
Creators: name: Tesfaye, Tariku
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: Background Globally, the prevalence of diabetes mellitus across various occupational groups and its relationship with an occupational factor is a topic of recent interest. Police officers as an occupational group are exposed to unhealthy life style, excessive alcohol consumption and smoking which intern leads to diabetes mellitus and other cardiovascular diseases than the general population. Due to this reason the present study were conducted among federal police officers in Addis Ababa. Objectives: The objective of this study was to assess the prevalence of diabetes mellitus and impaired fasting glucose level and identify their risk factors among federal police members at Federal Police Commission residing in Addis Ababa, Ethiopia between April and May 2015 Methodology: A cross-sectional study was employed using multi-stage sampling technique. The study populations were all federal police members living in Addis Ababa and served the police commission for at least a year. The total sample size for the study was 1003. The data were collected using structured questionnaire, physical examinations and blood samples, by using the WHO stepwise approach. Data were entered into SPSS version 20.0. The entered data were cleaned and analyzed Frequency distributions, percentage, tables and charts were used to show result of univariate analysis. Cross tabulation, chi-square tests, and 95% confidence interval used to present results of bivariate analysis. Multivariate logistic regression analyses were done to control potential confounding variables. xi Result: Out of 1003 eligible subjects 936 (93.3) police officer were participated in this study. Of the total subjects tested for blood glucose level the prevalence of impaired glucose homeostasis (IGH) were 13%, out of which 47 (5.0 %) were diabetes and 73 (8.0%) impaired fasting glucose. Age ≥45 years (p=0.044, AOR= 4.9 (1.04, 23.1)), having history of first degree relative who suffered from diabetes (P=0.008, AOR= 3.2 (1.4, 7.5)), and Hypertension (P=0.000, AOR= 4.5 (2.6, 7.8)), Body Mass Index (P=0.000, AOR= 6.0 (1.2, 30.2)) were found to have stastical significance with the prevalence of Impaired Glucose Homeostasis among the study participants. Conclusion: The study identified a high prevalence of diabetes mellitus and impaired fasting glucose level among police officers. Finally, the study recommend awareness and prevention of diabetes mellitus program should be given priority as that of communicable diseases by federal police health service directorate, Federal Minster Health and Non Governmental Organizations who works in collaboration with Federal Police Commissions
Ideals and quotients of diagonally quasi-symmetric functions
Creators: name: Li, Shu Xiao
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: In 2004, J-C. Aval, F. Bergeron and N. Bergeron studied the algebra of diagonally quasi-symmetric functions $\operatorname{\mathsf{DQSym}}$ in the ring $\mathbb{Q}[\mathbf{x},\mathbf{y}]$ with two sets of variables. They made conjectures on the structure of the quotient $\mathbb{Q}[\mathbf{x},\mathbf{y}]/\langle\operatorname{\mathsf{DQSym}}^+\rangle$, which is a quasi-symmetric analogue of the diagonal harmonic polynomials. In this paper, we construct a Hilbert basis for this quotient when there are infinitely many variables i.e. $\mathbf{x}=x_1,x_2,\dots$ and $\mathbf{y}=y_1,y_2,\dots$. Then we apply this construction to the case where there are finitely many variables, and compute the second column of its Hilbert matrix.
description: 17 pages
Schwinger-type parametrization of open string worldsheets
Creators: name: Playle, Sam
name: Sciuto, Stefano
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A parametrization of (super) moduli space near the corners corresponding to bosonic or Neveu-Schwarz open string degenerations is introduced for worldsheets of arbitrary topology. With this parametrization, Feynman graph polynomials arise as the $α' \to 0$ limit of objects on moduli space. Furthermore, the integration measures of string theory take on a very simple and elegant form.
description: 17 pages, 3 figures
Infrared Spectroscopy of Nearby Radio Active Early-Type Galaxies -- II: Spectral Atlas
Creators: name: Durré, Mark
name: Mould, Jeremy
name: Brown, Michael
name: Reynolds, Tristan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a near infrared spectroscopic atlas of nearby, bright early-type galaxies with radio emission, containing 163 galaxies observed by the Palomar 200" TripleSpec instrument, measuring the emission line fluxes for H, He, [Fe II] and H$_2$ and determined the nuclear excitation mechanisms. By stacking spectra, we deduced the H$_2$ excitation temperature ($1957\pm182$ K) and dominant excitation mechanism (thermal and shock heating combined) from the $\textit{K}$-band emission line sequence. Stacking also produces an "average" spectrum of absorption features and spectral indices from the literature; the CO12 absorption line index vs. $\textit{J-K}$ colour shows a trend of stronger nuclear activity producing a weaker CO12 index and a redder (flatter) continuum. The correlations between the radio and the emission-line luminosities finds a trend with radio power; however, the large scatter in the upper limits shows that the two are not directly coupled and the duty cycles of SF and AGN activity are not synchronised.
description: 17 pages, 11 figures. Accepted by MNRAS
Quark masses and strong coupling constant in 2+1 flavor QCD
Creators: name: Maezawa, Y.
name: Petreczky, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a determination of the strange, charm and bottom quark masses as well as the strong coupling constant in 2+1 flavor lattice QCD simulations using highly improved staggered quark action. The ratios of the charm quark mass to the strange quark mass and the bottom quark mass to the charm quark mass are obtained from the meson masses calculated on the lattice and found to be $m_c/m_s=11.871(91)$ and $m_b/m_c=4.528(57)$ in the continuum limit. We also determine the strong coupling constant and the charm quark mass using the moments of pseudoscalar charmonium correlators: $α_s(μ=m_c)=0.3697(85)$ and $m_c(μ=m_c)=1.267(12)$ GeV. Our result for $α_s$ corresponds to the determination of the strong coupling constant at the lowest energy scale so far and is translated to the value $α_s(μ=M_Z,n_f=5)=0.11622(84)$.
description: 12 pages, 11 figures
The Holocene of King Island, Bass Strait : sedimentology, taphonomy, palaeontology, climate and human history
Creators: name: Van Huet., Alexandra Maria Sanja
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Assess and improve the low bed occupancy rate in ABI-ADI Hospital, Tigray, Ethiopia, 2013
Creators: name: G/meskel, G/slassie
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2013

description: Back ground Bed occupancy rate is the average percentage of occupied beds during the reporting period. Hospital bed-occupancy rates have been proposed as a measure that reflects the ability of a hospital to properly care for patients. Whether this measure can be considered useful in guiding the planning and operational management of hospital beds in a way that improves how well patients fare while in hospital. Objective The objective of the project is to improve data quality management system and low bed occupancy rate from 42.2% to 80% by the end of July 2013 Methodology A pre-post intervention study design is used to improve the low bed occupancy rate in Abi adi Hospital, Data is collected from the admission and discharge registration log books including all patients admitted pre and post intervention by using the check list from each ward by data collectors. Result In this pre-post intervention study bed occupancy rate is increased from 42.2% to 66.3% and number of patients not registered their date of discharge and length of stay was decrease from 43 [5%] to 5 [0.04%] which is significant. Discussion and recommendation The study indicates that poor data quality management is one of the major causes of low bed occupancy rate in ABI adi hospital. Bed occupancy rate was increased from 42.2% to 66.3% in this intervention period the hospital management committee should give attention and do daily follow up by the liaison officer for its sustainability.
Utilizing Blockchain Technology for Enhanced Governance: A Comprehensive Analysis of Potential Applications and Innovations in the Governmental Sector of the EU
Creators: name: Bodemer, Oliver
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 389999
subject: Other economics not elsewhere classified

description: This research delineates the transformative potential of blockchain technology within the realm of European governments. By conducting a meticulous analysis of existing literature and case studies, the study seeks to identify and evaluate the opportunities and challenges associated with implementing blockchain technology in governmental operations across Europe. The methodology involves a comprehensive review of peer-reviewed articles, white papers, and governmental reports, aiming to construct a nuanced perspective on the current state of blockchain applications in European governmental structures. Key findings indicate that blockchain technology can significantly enhance transparency, efficiency, and security in governmental processes within the European context, albeit with certain challenges and barriers to implementation. This study serves as a pivotal reference point, fostering a deeper understanding of the intricate dynamics of blockchain technology in the European governmental sphere and paving the way for future research and policy developments.
Κατασκευή προσοµοιωτή ϐιολογικών νανοδικτύων µε ενδιάµεσους κόµβους αναµετάδοσης
Creators: name: Χριστόπουλος, Γεώργιος Θεόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: subject: Βιολογικά νανοδίκτυα
subject: Νανοτεχνολογία
subject: Κόμβοι αναμετάδοσης
subject: Biological nanonetworks
subject: Nanotechnology
subject: FOS: Nanotechnology
subject: Relay nodes

description: Στην τρέχουσα διπλωµατική εργασία παρουσιάζεται και µελετάται ο τοµέας των ϐιολογικών νανοδικτύων, µέσω της υλοποίησης ενός προσοµοιωτή ενός υδάτινου περιβάλλοντος, ο οποίος χαρακτηρίζεται από ενδιάµεσους κόµβους αναµετάδοσης. Αρχικά, παρουσιάζονται οι ϐασικές αρχές που διέπουν την κίνηση των µικροοργανισµών και σωµατιδίων σε ένα τέτοιο ϐιολογικό περιβάλλον (για παράδειγµα, το ανθρώπινο αίµα), όπως η κίνηση της διάχυσης και του χηµειοτακτισµού. Περιγράφονται οι ϐασικές ϐιολογικές ιδιότητες που χαρακτηρίζουν τις κινήσεις αυτές, ενώ παράλληλα υπογραµµίζονται οι ιδιαιτερότητες των νανοδικτύων, συγκριτικά µε τα παραδοσιακά δίκτυα επικοινωνιών. Στη συνέχεια, πλαισιώνεται η προσοµοίωση µε τις παραµέτρους που χρησιµοποιήθηκαν κατα την κατασκευή του µοριακού προσοµοιωτή και περιγράφονται τα αποτελέσµατα. Συµπερασµατικά, η εισαγωγή ενδιάµεσων κόµβων αναµετάδοσης σε ένα ϐιολογικό νανοδίκτυο, ενισχύει σηµαντικά την αποδοτικότητα της επικοινωνίας, όταν ποµπός και δέκτης απέχουν σηµαντικά. Κίνητρο της συγκεκριµένης ερευνητικής προσέγγισης αποτελεί το γεγονός ότι µε την απουσία κόµβων αναµετάδοσης και λαµβάνοντας υπόψιν την απόσταση ποµπού και δέκτη, η επικοινωνία καθίσταται µη πρακτική, λόγω της µεγάλης καθυστέρησης διάδοσης των νανοσωµατιδίων και της αργής κίνησης των σωµατιδίων.
description: In the current dissertation, the field of biological nanonetworks is firstly presented and then studied, through the implementation of a biological simulator in an aquatic environment, which is characterized by intermediate relay nodes (constituting a multi-hop molecular nanonetwork). First, the basic principles governing the movement of microorganisms and particles in such a biological environment (for example, human blood) are taken into account, such as the movement of diffusion and chemotaxis. The basic biological properties that characterize these movements are described, while at the same time the peculiarities of nanonetworks are highlighted, compared to the traditional communication networks. Next, the simulation is framed with the parameters used in the construction of the molecular simulator and the results are described thoroughly. In conclusion, the introduction of intermediate relay nodes in a biological nanonetwork significantly enhances the efficiency of communication, when the transmitter and the receiver are significantly apart. The motivation for this research approach is the fact that with the absence of retransmission nodes and taking into account the distance between transmitter and receiver, communication becomes impractical, due to the propagation delay of nanoparticles and the slow motion/speed of the biological particles.
Experimental Realisation of a Thermal Squeezed State of Levitated Optomechanics
Creators: name: Rashid, Muddassar
name: Tufarelli, Tommaso
name: Bateman, James
name: Vovrosh, Jamie
name: Hempston, David
name: Kim, M. S.
name: Ulbricht, Hendrik
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We experimentally squeeze the thermal motional state of an optically levitated nanosphere, by fast switching between two trapping frequencies. The measured phase space distribution of our particle shows the typical shape of a squeezed thermal state, from which we infer up to 2.7dB of squeezing along one motional direction. The experiment features a large number of thermal excitations, therefore remaining in the classical regime. Nevertheless, we argue that the manipulation scheme described here could be used to achieve squeezing below the zero-point level, if preceded by ground state cooling of the levitated mechanical oscillator. Additionally, a higher degree of squeezing could in principle be achieved by repeating the frequency-switching protocol multiple times.
description: 6 pages, 3 figures, updated version, Accepted for publication at PRL
Dynamical analysis of generalised $f(R,\mathcal{L})$ theories
Creators: name: Azevedo, R. P. L.
name: Páramos, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work, we use a dynamical system approach to analyse the viability of $f(R,\mathcal{L})$ candidates for dark energy. We compare these with nonminimal coupled $f(R)$ theories and study the solutions for exponential and power-law forms in order to constraint the allowed range of model parameters.
description: 9 pages, 5 figures, 4 tables, Published in Phys. Rev. D
Desenvolvimento de uma arquitetura robótica automatizada capaz de cortar grama
Creators: name: Alcantara, Ana Laura R.
name: Oliveira, Isabela R.
name: Ferreira, Maria Eugenia de A.
name: Araújo Lima, Danielli
name: Silva, Aline Fernanda Furtado
Publisher: name: figshare
Year: 2022
Subjects: subject: 80101 Adaptive Agents and Intelligent Robotics
subject: FOS: Computer and information sciences
subject: 91007 Manufacturing Robotics and Mechatronics (excl. Automotive Mechatronics)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Sabe-se que as ocupações dos seres humanos só vêm aumentando nos últimos anos e, por conseguinte, não permanecem muito em suas residências deixando-as sozinhas durante um longo período de tempo. Ademais, os robôs auxiliares nesse tipo de tarefas já existentes no mercado não são acessíveis para a população de baixa renda. Destarte, o presente trabalho visa a produção de um protótipo de robô autônomo de baixo custo que faça as patrulhas em um determinado ambiente – domiciliar ou comercial - e caso necessário execute o aviso as autoridades, de forma a ser oferecido a boa parte da população e oferecer mais segurança para os seres humanos. Sua construção se dá por meio de motores e sensores para locomoção e identificação de movimentos, os quais são controlados por um Arduino - pequena placa composta por um microcontrolador. Além disso, a estrutura não funcional do protótipo será projetada em uma plataforma 3D e em seguida impressa.
Sem-CS: Semantic CLIPStyler for Text-Based Image Style Transfer
Creators: name: Kamra, Chanda Grover
name: Mastan, Indra Deep
name: Gupta, Debayan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: CLIPStyler demonstrated image style transfer with realistic textures using only a style text description (instead of requiring a reference style image). However, the ground semantics of objects in the style transfer output is lost due to style spill-over on salient and background objects (content mismatch) or over-stylization. To solve this, we propose Semantic CLIPStyler (Sem-CS), that performs semantic style transfer. Sem-CS first segments the content image into salient and non-salient objects and then transfers artistic style based on a given style text description. The semantic style transfer is achieved using global foreground loss (for salient objects) and global background loss (for non-salient objects). Our empirical results, including DISTS, NIMA and user study scores, show that our proposed framework yields superior qualitative and quantitative performance. Our code is available at github.com/chandagrover/sem-cs.
description: 5 pages, 4 Figures, 2 Tables. arXiv admin note: substantial text overlap with arXiv:2303.06334
The Many Faces of Heterogeneous Ice Nucleation: Interplay Between Surface Morphology and Hydrophobicity
Creators: name: Fitzner, Martin
name: Sosso, Gabriele C
name: Cox, Stephen J
name: Michaelides, Angelos
Publisher: name: arXiv
Year: 2016
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: What makes a material a good ice nucleating agent? Despite the importance of heterogeneous ice nucleation to a variety of fields, from cloud science to microbiology, major gaps in our understanding of this ubiquitous process still prevent us from answering this question. In this work, we have examined the ability of generic crystalline substrates to promote ice nucleation as a function of the hydrophobicity and the morphology of the surface. Nucleation rates have been obtained by brute-force molecular dynamics simulations of coarse-grained water on top of different surfaces of a model fcc crystal, varying the water-surface interaction and the surface lattice parameter. It turns out that the lattice mismatch of the surface with respect to ice, customarily regarded as the most important requirement for a good ice nucleating agent, is at most desirable but not a requirement. On the other hand, the balance between the morphology of the surface and its hydrophobicity can significantly alter the ice nucleation rate and can also lead to the formation of up to three different faces of ice on the same substrate. We have pinpointed three circumstances where heterogeneous ice nucleation can be promoted by the crystalline surface: (i) the formation of a water overlayer that acts as an in-plane template; (ii) the emergence of a contact layer buckled in an ice-like manner; and (iii) nucleation on compact surfaces with very high interaction strength. We hope that this extensive systematic study will foster future experimental work aimed at testing the physiochemical understanding presented herein.
description: Main + SI