cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Επιδράσεις νεωτέρων διολισθητικών και υγρασίας στις ιδιότητες ροής και δισκιοποίησης αραιωτικών του τύπου της δικτυωμένης πολυβινυλο-πυρολιδόνης
Creators: name: Καραγιάννης, Ιωάννης Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Αραιωτικά μέσα
Διολισθητικά μέσα (νεώτερα)
Υγρασία
Ιδιότητες ροής
Δισκιοποίηση
Μηχανική αντοχή
Polymeric diluents (cross-linked pvp)
Glidants
Moisture
Flow properties
Compaction properties
Polyplasdone

description: Στην παρούσα εργασία διερευνώντας οι επιδράσεις της περιεχόμενης υγρασίας και του είδους του διολισθητικού μέσου στις ιδιότητες ροής και δισκιοποίησης αραιωτικών πολυμερών. Για το σκοπό αυτό επελέγησαν αραιωτικά πολυμερή του τύπου της δικτυωμένης πολυβινυλοπυρολιδόνης (Polyplasdone XL, XL-10, INF-10) και νεώτερου τύπου διολισθητικά τύπου Aerosil (200 Pharma, R972V). Το στεωτικό μαγνήσιο χρησιμοποιήθηκε ως λιπαντικό μέσο αναφοράς. Ακολουθώντας πειραματικό σχεδιασμό 3^(3), από τα παραπάνω υλικά παρασκευάστηκαν μίγματα και έγινε εξισορρόπιση σε 33,52 και 75% σχετικής υγρασίας. Κατόπιν προσδιορίστηκαν οι ιδιότητες ροής και διευθέτησης των σωματιδίων καθώς και η μέση διάμετρος (ειδική επιφάνεια). Τέλος από τα μίγματα παρασκευάστηκαν δισκία σε 5 διαφορετικά επίπεδα πίεσης και προσδιορίστηκε η μηχανική αντοχή σε διαμετρική συμπίεση, η ελαστική επαναφορά και ο δείκτης ευθραυστότητας των δισκίων. Γενικά βρέθηκε ότι οι επιδράσεις των διολισθητικών μέσω καθορίζονται από την ικανότητά τους να καλύπτουν την επιφάνεια των σωματιδίων των αραιωτικών μέσων και να προσλαμβάνουν υγρασία από αυτά, μειώνοντας έτσι την πλαστικοποιητική δράση του νερού
description: In the present study we set out to investigate the effects of moisture and glidant type on the flow and compaction properties of polymeric diluents. For this purpose, diluents of the cross-linked PVP type were selected (Polyplasdone XL, XL-10, INF-10) as well as novel glidants (Aerosil 200 Pharma, R972V). Magnesium stearate was chosen as a standard lubricant reference material. All these materials were mixed 3^(3) and the powder mixtures were stored at 3 different relative humidity envrironments (33,52 75%). Afterwards were determined the flow properties, the moisture content and the particle size distribution. These powder mixtures were compressed into tablets applying 5 different compression pressures and tensile strenght, the percent elastic recovery, brittle fracture index were determined. In general, it was found that the influences of the glidants are determined by their ability to cover the surface of the diluent particles and to absorb moisture from them, eliminating the plasticizing action of water
Επαναπροσέγγιση των ανθρώπων στην Κύπρο: ο ρόλος της εκπαίδευσης
Creators: name: Γεωργίου, Γιώργος Σ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Επαναπροσέγγιση
Κύπρος
Εκπαίδευση
Σύγκρουση
Cyprus
Education

description: Επαναπροσέγγιση ορίζεται ως η διαδικασία προώθησης μέτρων που συμβάλλουν στην ειρηνική συμβίωση των ανθρώπων στην Κύπρο. Η Κύπρος κινδυνεύει από διχοτόμηση τόσο εδαφική όσο και του λαού της μετά την εισβολή της Τουρκίας το 1974. Σε αυτή την έρευνα συντεχνιακοί ηγέτες της ΠΟΕΔ και της ΚΤΟΣ (συντεχνίες δασκάλων), μέσα από συνεντεύξεις, καταγράφουν τις απόψεις τους για το ρόλο της εκπαίδευσης. Αναδεικνύεται η ανάγκη περαιτέρω συνεργασίας. Η πολιτική κατάσταση επηρεάζει αρνητικά της διαγραφόμενης προοπτικής. Απαιτείται ανάπτυξη σχέσεων ανάμεσα στους ανθρώπους
description: Reapproachement is defined as the procedure to contribute for peaceful symbiosis of people in Cyprus. Since the turkish invasion, 1974 the island of Cyprus is divided territoriddly and people. In the current essay Teacher's Union leaders of both communities express their views regarding the role of education for promoting rapproachement between green and turkish cypriots. The political environment is strongly infuencing in a negative way. For the present being move efforts for contact between people are primarily needed
Will Cryptocurrency Become the Future?
Creators: name: Kajol Sharma
Publisher: name: Zenodo
Year: 2024

description: Due to the speedy development of communication technology, several of our dailyactivities are incorporated online. The increase of digital acquisition has creatednew business opportunities through the employment of virtual word ideas. Thisgrowth has activated a virtual business development referred to as cryptocurrency.A cryptocurrency could be a secure digital or virtual currency which will be usedfor transactions. Because of its decentralized nature, it is used for creatingtransactions. There are 1658 styles of cryptocurrencies within the digital marketwhich will be used for creating payment transactions. It's secured by cryptographythat makes it not possible to pay a cryptocurrency doubly on anetwork. Cryptocurrency exists solely in digital kind and may be transferred fullybetween digital addresses. This analysis focuses on the explanation for gainingpopularity within the recent periods and what can be its future. It conjointlyfocuses on what proportion data a common person has concerningcryptocurrencies. It also focuses on the similarities and differences between stockmarket and cryptocurrencies
Convergence rates and source conditions for Tikhonov regularization with sparsity constraints
Creators: name: Lorenz, Dirk A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47A52, 65J20, 65F22

description: This paper addresses the regularization by sparsity constraints by means of weighted $\ell^p$ penalties for $0\leq p\leq 2$. For $1\leq p\leq 2$ special attention is payed to convergence rates in norm and to source conditions. As main result it is proven that one gets a convergence rate in norm of $\sqrtδ$ for $1\leq p\leq 2$ as soon as the unknown solution is sparse. The case $p=1$ needs a special technique where not only Bregman distances but also a so-called Bregman-Taylor distance has to be employed. For $p<1$ only preliminary results are shown. These results indicate that, different from $p\geq 1$, the regularizing properties depend on the interplay of the operator and the basis of sparsity. A counterexample for $p=0$ shows that regularization need not to happen.
Δομική και λειτουργική ανάλυση της 3'-γειτονικής DNA περιοχής του b ^ (major) γονιδίου αιμοσφαιρίνης σε σχέση με το μηχανισμό δράσης υπομεθυλιτωτικών ουσιών
Creators: name: Τεζιάς, Σωτήριος Στεργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: MEL κύτταρα
Διαφοροποίηση
Υπομεθυλιωτικοί παράγοντες
Γονίδια αιμοσφαιρίνης
Μεταγραφή
Χημικοί επαγωγείς
MEL cells
Differentiation
Hypomethylating agents
Globin genes
Transcription
Chemical inducers

description: Η επιγενετική ρύθμιση της γονιδιακής έκφρασης μέσω της αλλαγής στη δομή της χρωματίνης, που περιλαμβάνει αλλαγές στο βαθμό μεθυλίωσης του DNA και ακετυλίωσης των ιστονών, θεωρείται ως πολύ σημαντική αναπτυξιακή διαδικασία στα ανώτερα θηλαστικά. Σε μια προσπάθεια να αποκαλυφθεί ο ρόλος της μεθυλίωσης του DNA και RNA στην έναρξη της διαφοροποίησης των ερυθροποιητικών κυττάρων του ποντικού, παρατηρήσαμε ότι επώαση των MEL κυττάρων με αναστολείς της μεθυλίωσης προκάλεσε αναστολή της διαφοροποίησης και οδήγησε στη συσσώρευση μικρών, σχετικά χαμηλού μοριακού βάρους RNA τμημάτων που υβριδίζονται με τη γειτονική προς το 3'-άκρο περιοχή του b ^ (major)γονιδίου της αιμοσφαιρίνης. Παρότι η ακριβής δομή και προέλευση αυτών των RNA's καθώς και ο ρόλος τους στην αναστολή της διαφροποίησης των MEL κυττάρων δεν είναι γνωστός, λεπτομερής ανάλυση της γειτονικής προς το 3'-άκρο περιοχής του b ^ (major)γονιδίου της αιμοσφαιρίνης ανακάλυψε την ύπαρξη στερεότυπων αλληλουχιών σύνδεσης για τους μεταγραφικούς παράγοντες GATA-1, NF-E2, EKLF και ένα B1 επαναλαμβανόμενο στοιχείο. Στόχος της εργασίας αυτής είναι να καθορίσει αν η συγκεκριμένη DNA περιοχή εμφανίζει πιθανή δράση ως υποκινητής που ενεργοποιείται με τη βοήθεια υπομεθυλιωτικών ενώσεων μέσω της σύνδεσης σε αυτή συγκεκριμένων μεταγραφικών παραγόντων με τρόπου που πιθανά να προκαλεί την αναστολή της ερυθράς διαφοροποίησης in vitro
description: Epigenetic regulation of gene expression via chromatin structural modification, including DNA methylation and histone acetylation status, has been considered as a key developemental process in higher mammals. In an attempt to uncover the role of both DNA and RNA methylation in the initiation of murine haematopoieticcell differentiation, we observed that treatment of MEL cells with inhibitors of methylation blocked the differentiation process and led to accumulation of discrete, relative law molecular weight RNA transcripts hybridired with the 3'-flanking sequences of b ^ (major)globin gene. Although the precise structure and origin of these RNAs as well as their role in the inhibition of MEL cell differentiation are not known , detailed analysis of the 3'-flanking DNA sequences of b ^ (major)globing gene have revealed that it contains consensus sequences for the GATA-1, NF-E2, EKLF transcription factor and a B1-repeat element. The central aim of the present study is to determine whether this area serves as a promoter-like region activated by hypamenthylating agents through the binding of specific transcription factors in a way that may be implicated in the blockade of erythroid differentiation in vitro
Σύνθεση ετεροκυκλικών ενώσεων με πιθανή βιολογική δράση μέσω ιμιδαζολικών OQDM
Creators: name: Νεοχωρίτης, Κωνσταντίνος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Ιμιδαζόλιο
Ο-κινοδιμεθάνιο
Imidazole
O-quindimethane

description: Στόχος της παρούσας εργασίας είναι η σύνθεση ιμιδαζολικών OQPM. Το ιμιδαζολικό OQPM είναι το μόνο ετεροκυκλικό κινοδιμεθάνιο που ουσιαστικά δεν έχει ακόμα παρασκευαστεί και η ύπαρξή του δεν έχει επιβεβαιωθεί ακόμη. Πρώτο στάδιο στην όλη προσπάθεια ήταν η σύνθεση του ιμιδαζολικού δακτυλίου, δεύτερο στάδιο η δημιουργία του ιμιδαζολικού OQPM και τέλος η παγίδευση του με διενόφιλα. Ακολουθήθηκαν δύο βασικές πορείες. Η πρώτη βασίζεται στην ένωση 2,3-διυδρο-4,5-διμεθυλο-1φαικλαμινο-1Η μιδαζολο-2-θειόνη, ενώ η δεύτερη στην ένωση 1-φαινυλο-3-μεθυλο-2-θειοδοξο-2,3 διυδρο-1Η-ιμιδαζολο-4,5,δικαρβοξυλικό διθειυλεστέρα. Χρησιμοποιώντας ως διενόφιλα τα Ν-μεθυλο-μαλεϊμιδιο, Ν-φαινυλο-μαλεϊμίδιο, ακετυλένιο-1,2-δικβοξθλικό διμεθυλεστέρα, βουτ-3-εν-2-όνη, ακρυλικός μεθυλεστέρας, προπυνικός μεθυλεστέρας και οι κινόνες βενζοκινόνη, ναφθοκινόνη, τριπτόκινο και φαικλοκινόνη. Εγινε δυνατή η ανομόνωση του ιμιδαζ. κινομεθανίου για πρώτη φορά. Οι άλλες πορείες δεν έδωσαν το επιθυμητό αλλά απομονώθηκαν χρήσιμα παράγωγα
description: In the present work we tried to synthesize suitable imidazole derivatives as precursors for the synthesis of imidazole OQPM. The imidazole OQPM is the only heterocyclic O-QPM which haven't really been synthesized and its existence hasn't yet been confirmed. In an reaction sequence, firstly we synethesized the imidazole, secondly we produced the imidazole OQPM and finally to trap it with a number of dienophiles we followed two main pathways in order to achieve our goal. The first pathway is based on 4,5-dimethyl-1-(phenylamine)-1H-imidazol-2(3H)-thio and the second on compand diethyl 1-phenyl-2-thioxo-2,3 dihydro-H-imidazole-4,5-dicorboxylate. The dienophiles which have used are symmetrical such as N-methyl-maleimid, N-phenyl maleimid, dinethyl, acetyl-1,2-dicorboxylute, but 3-en-one, methylacrylate and methyl propiolate and finally quinones such as benzoquinone, mapthoquinone, tripticene and phenyl-quinone. It was achieved for the first time the isolation of imidazole OQPM
Best Practices in Post College Libraries : A Study with Special Reference to Shri Mailarlingeshwar Post Graduate College Shorapur,Yadagir District. Karnataka State
Creators: name: Smt. Shashikala S Angadi
Publisher: name: Zenodo
Year: 2024

description: Libraries are the repositories of the knowledge and form and integral part of any education system.  Library and information services play an important role in the academic excellence of any institution.  In order to bridge gap between library and users for the effective and maximum utilization of the resources, best practices adopted.  An attempt has been made to highlight the best practices  adopted in the Information and Knowledge Centre, Shri Mailaralingeshwar Post Grade College  Shorapur, Yadagir District. Karnataka State.
Surface Energy and Separation Mechanics of Droplet Interface Phospholipid Bilayers
Creators: name: Huang, Yaoqi
name: Suja, Vineeth Chandran
name: Tajuelo, Javier
name: Fuller, Gerald G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Droplet interface bilayers are a convenient model system to study the physio-chemical properties of phospholipid bilayers, the major component of the cell membrane. The mechanical response of these bilayers to various external mechanical stimuli is an active area of research due to implications for cellular viability and development of artificial cells. In this manuscript we characterize the separation mechanics of droplet interface bilayers under step strain using a combination of experiments and numerical modeling. Initially, we show that the bilayer surface energy can be obtained using principles of energy conservation. Subsequently, we subject the system to a step strain by separating the drops in a step wise manner, and track the evolution of the bilayer contact angle and radius. The relaxation time of the bilayer contact angle and radius, along with the decay magnitude of the bilayer radius were observed to increase with each separation step. By analyzing the forces acting on the bilayer and the rate of separation, we show that the bilayer separates primarily through the peeling process with the dominant resistance to separation coming from viscous dissipation associated with corner flows. Finally, we explain the intrinsic features of the observed bilayer separation by means of a mathematical model comprising of the Young-Laplace equation and an evolution equation. We believe that the reported experimental and numerical results extend the scientific understanding of lipid bilayer mechanics, and that the developed experimental and numerical tools offer a convenient platform to study the mechanics of other types of bilayers.
description: 11 pages, 5 figures, under review
Generalized Browder's and Weyl's Theorems for Banach space operators
Creators: name: Curto, Raul E.
name: Han, Young Min
Publisher: name: arXiv
Year: 2006
Subjects: subject: Functional Analysis (math.FA)
subject: Spectral Theory (math.SP)
subject: FOS: Mathematics
subject: 47A10; 47A53; 47B20

description: We find necessary and sufficient conditions for a Banach space operator T to satisfy the generalized Browder's theorem, and we obtain new necessary and sufficient conditions to guarantee that the spectral mapping theorem holds for the B-Weyl spectrum and for polynomials in T. We also prove that the spectral mapping theorem holds for the B-Browder spectrum and for analytic functions on an open neighborhood of σ(T). As applications, we show that if T is algebraically M-hyponormal, or if T is algebraically paranormal, then the generalized Weyl's theorem holds for f(T), where f \in H(T), the space of functions analytic on an open neighborhood of σ(T). We also show that if T is reduced by each of its eigenspaces, then the generalized Browder's theorem holds for f(T), for each f \in H(σ(T)).
Spectral Ranking of Causal Influence in Complex Systems
Creators: name: Zalmijn, Errol
name: Heskes, Tom
name: Claassen, Tom
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Like natural complex systems such as the Earth's climate or a living cell, semiconductor lithography systems are characterized by nonlinear dynamics across more than a dozen orders of magnitude in space and time. Thousands of sensors measure relevant process variables at appropriate sampling rates, to provide time series as primary sources for system diagnostics. However, high-dimensionality, non-linearity and non-stationarity of data remain a major challenge to effectively diagnose rare or new system issues by merely using model-based approaches. To reduce the causal search space, we validate an algorithm that applies transfer entropy to obtain a weighted directed graph from a system's multivariate time series and graph eigenvector centrality to identify the system's most influential parameters. The results suggest that this approach robustly identifies the true influential sources in a complex system, even when its information transfer network includes redundant edges.
description: 5 pages, 4 figures
Η επίδραση του οξέος στρες στις παραμέτρους του σπέρματος σε υγιείς άνδρες εθελοντές
Creators: name: Γκόλιας, Βασίλειος Αχιλλέα
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: οξύ στρες
σπέρμα
παράμετροι σπέρματος
ποιότητα σπέρματος
acute stress
semen, sperm
seminal parameters
semen quality

description: Σκοπός: Η διερεύνηση της επίδρασης του οξέος στρες στις παραμέτρους του σπέρματος σε υγιείς άνδρες εθελοντές. Μέθοδος: Από 16 υγιείς άνδρες εθελοντές συλλέχθηκαν δύο δείγματα σπέρματος, το πρώτο μετά από μια διαδικασία πρόκλησης οξέος στρες στο εργαστήριο και το δεύτερο υπό συνθήκες ηρεμίας στο σπίτι του καθενός. Το πρωτόκολλο πρόκλησης οξέος στρες στηρίχθηκε στο στρες της αναμονής του Trier Social Stress Test (TSST). Το υποκειμενικό στρες μετρήθηκε με την κλίμακα αυτοαναφερόμενου στρες Perceived Stress Scale (PSS). Ως βιοχημικός δείκτης του στρες χρησιμοποιήθηκε ο ποσοτικός προσδιορισμός της κορτιζόλης σιέλου. Αποτελέσματα: Ο όγκος του δείγματος σπέρματος ήταν σημαντικά αυξημένος στο δείγμα μετά το οξύ στρες σε σχέση με το δείγμα στο σπίτι (p<0,05), ενώ το pH του δείγματος μετά το οξύ στρες ήταν σημαντικά χαμηλότερο από το pH του δείγματος στο σπίτι (p<0,05). Ο βαθμός της κινητικότητας ήταν μεγαλύτερος στο δείγμα μετά το οξύ στρες από ό,τι στο δείγμα στο σπίτι, πλησιάζοντας το όριο της στατιστικής σημαντικότητας (p= 0,059). Δεν παρατηρήθηκαν στατιστικά σημαντικές διαφορές στις υπόλοιπες παραμέτρους του σπέρματος (συγκέντρωση, % κινητικότητα και ποσοστό των φυσιολογικών μορφών των σπερματοζωαρίων) ανάμεσα στα δύο δείγματα. Συμπεράσματα: Η έκθεση σε οξύ στρες φαίνεται να βελτιώνει κάποιες από τις παραμέτρους του σπέρματος, πιθανώς λόγω της αύξησης των εκκρίσεων του προστάτη αδένα.
description: Objectives: The investigation of the effect of acute stress on seminal parameters in healthy male volunteers. Methods: Semen samples were collected twice, from each of 16 healthy male volunteers. The first sample was collected after an acute stress inducing protocol in the laboratory and the second one in a non-stress environment, at home. The acute stress inducing protocol was based on the anticipatory stress response of the Trier Social Stress Test (TSST). The perceived stress was assessed using the Perceived Stress Scale (PSS). Determination of the salivary cortisol levels was used, as a biochemical stress marker. Results: Acute stress evoked a significant increase in the semen volume compared to the volume of the sample at home (p<0,05). The semen's pH was significantly lower after acute stress than the semen pH at home (p<0,05). The grade of motility was higher in the sample after acute stress than the grade of motility in the sample at home, approaching statistical significance (p=0,059). No statistically significant differences were observed in the other semen parameters (sperm concentration, % motility and percentage of normal forms of spermatozoa) between the two samples. Conclusion: Exposure to acute stress seems to improve certain semen parameters, possibly due to an increase in prostatic secretions.
Modeling Dual Pathways for the Metazoan Spindle Assembly Checkpoint
Creators: name: Sear, Richard P.
name: Howard, Martin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Using computational modelling, we investigate mechanisms of signal transduction focusing on the spindle assembly checkpoint where a single unattached kinetochore is able to signal to prevent cell cycle progression. This inhibitory signal switches off rapidly once spindle microtubules have attached to all kinetochores. This requirement tightly constrains the possible mechanisms. Here we investigate two possible mechanisms for spindle checkpoint operation in metazoan cells, both supported by recent experiments. The first involves the free diffusion and sequestration of cell-cycle regulators. This mechanism is severely constrained both by experimental fluorescence recovery data and also by the large volumes involved in open mitosis in metazoan cells. Using a simple mathematical analysis and computer simulation, we find that this mechanism can generate the inhibition found in experiment but likely requires a two stage signal amplification cascade. The second mechanism involves spatial gradients of a short-lived inhibitory signal that propagates first by diffusion but then primarily via active transport along spindle microtubules. We propose that both mechanisms may be operative in the metazoan spindle assembly checkpoint, with either able to trigger anaphase onset even without support from the other pathway.
description: 9 pages, 2 figures
BC Cassiopeiae: First Detection of IW And-Type Phenomenon Among Post-Eruption Novae
Creators: name: Kato, Taichi
name: Kojiguchi, Naoto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: IW And-type dwarf novae are recently recognized group of cataclysmic variables which are characterized by a sequence of brightening from a standstill-like phase with damping oscillations often followed by a deep dip. We found that the supposed classical nova BC Cas which erupted in 1929 experienced a state of an IW And-type dwarf nova in 2018, 89 yr after the eruption. This finding suggests that high mass-transfer rate following the nova eruption is associated with the IW And-type phenomenon. The mass of the white dwarf inferred from the decline rate of the nova is considerably higher than the average mass of the white dwarfs in cataclysmic variables and the massive white dwarfs may be responsible for the manifestation of the IW And-type phenomenon.
description: 4 pages, 1 figure, supplementary information (si.pdf), accepted for publication in PASJ
A survey of conventional and novel processes for the treatment of refractory gold
Creators: name: Fairley, Lance Michael
Publisher: name: University of British Columbia
Year: 2009

description: This thesis is a survey of treatments for the recovery of gold from refractory ores. An elucidation of the characteristics leading to gold retention and a definition for refractory gold ore is presented. From this survey of treatments are derived diagnostic conditions that may be useful in predicting the specific refractory characteristics of many ores. Conventional processes are surveyed and include the refractory ore treatments that enjoy commercial application. Oxidative pretreatments, lixiviants for gold dissolution, and adsorption methods are discussed for both conventional and emerging or less known refractory gold ore treatments. These emerging methods may have seen considerable research and possibly some commercial application. Included are some alternate techniques that were developed for specific ores and that may have been superseded by less expensive or more general treatments. Some diagnostic test conditions are proposed as being useful in elucidating the refractory components of non-cyanidable ores. Many pretreatments and lixiviating leaches are applied to sulfidic ores with cyanidation gold recoveries as low as 2.6% leading to extractions as high as 99%. Samples of moderately refractory carbonaceous ore with varying organic carbon and sulfide content are treated similarly and exhibit extraction gains from 66.5% to 92.3%
ATCA 3mm observations of NGC6334I and I(N): dense cores, outflows and an UCHII region
Creators: name: Beuther, H.
name: Walsh, A. J.
name: Thorwirth, S.
name: Zhang, Q.
name: Hunter, T. R.
name: Megeath, S. T.
name: Menten, K. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Aims: Investigation of the dense gas, the outflows and the continuum emission from the massive twin cores NGC6334I and I(N) at high spatial resolution. Methods: We imaged the region with the Australia Telescope Compact Array (ATCA) at 3.4mm wavelength in continuum as well as CH3CN(5_K-4_K) and HCN(1-0) spectral line emission. Results: While the continuum emission in NGC6334I mainly traces the UCHII region, toward NGC6334I(N) we detect line emission from four of the previously identified dust continuum condensations that are of protostellar or pre-stellar nature. The CH3CN(5_K-4_K) lines are detected in all K-components up to energies of 128K above ground toward two protostellar condensations in both regions. We find line-width increasing with increasing K for all sources, which indicates a higher degree of internal motions closer to the central protostars. Toward the main mm and CH3CN source in NGC6334I we identify a velocity gradient approximately perpendicular to the large-scale molecular outflow. This may be interpreted as a signature of an accretion disk, although other scenarios, e.g., an unresolved double source, could produce a similar signature as well. No comparable signature is found toward any of the other sources. HCN does not trace the dense gas well but it is dominated by the molecular outflows. While the outflow in NGC6334I exhibits a normal Hubble-law like velocity structure, the data indicate a precessing outflow close to the plane of the sky for NGC6334I(N). Furthermore, we observe a wide (~15.4km/s) HCN absorption line, much broader than the previously observed CH3OH and NH3 absorption lines. Several explanations for the difference are discussed.
description: 14 pages, 14 figures, accepted for A&A
Emulsion and Suspension Development for Parenteral Drug Delivery System
Creators: name: Malissa Mathew Dmello
Publisher: name: Zenodo
Year: 2024

description: The recommended delivery form for administering insoluble medications is parenteral emulsions andsuspensions. This could be a substantial challenge for formulators due to some of the physicochemicalcharacteristics that need to be taken into account in order to produce a consistent formulation, such asHydrophilic Lipophilic Balance (HLB), Zeta potential, and particle size distribution. Additionally, certainpreparations may have undesirable features like stability issues or microbial growth susceptibility, as wellas some adverse effects, including discomfort at the injection site and anaphylactic hypersensitivity reactionsin patients. On the other hand, this market is more protected from generic production because of the difficultprocedure and necessary expenditure. In order for lipid injectable emulsions to be beneficial as drug deliveryvehicles, formulation components and process factors must be adequately incorporated into formulationdevelopment methods. When choosing such delivery vehicles, careful consideration must be given to thephysicochemical characteristics of active therapeutic agents because they have a major impact on thepharmacokinetics and tissue disposition after intravenous injection of drug-containing lipid emulsion.Targeted treatments, poorly soluble APIs and cancer drugs have a large amount of space for innovativesuspension and emulsion development.
Charge pumping in magnetic tunnel junctions: Scattering theory
Creators: name: Xiao, Jiang
name: Bauer, Gerrit E. W.
name: Brataas, Arne
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study theoretically the charge transport pumped by magnetization dynamics through epitaxial FIF and FNIF magnetic tunnel junctions (F: Ferromagnet, I: Insulator, N: Normal metal). We predict a small but measurable DC pumping voltage under ferromagnetic resonance conditions for collinear magnetization configurations, which may change sign as function of barrier parameters. A much larger AC pumping voltage is expected when the magnetizations are at right angles. Quantum size effects are predicted for an FNIF structure as a function of the normal layer thickness.
description: 4 pages, 3 figures. to be published on Physical Review B Rapid Communication
The Geometrical Effects on Electronic Spectrum and Persistent Currents in Mesoscopic Polygon
Creators: name: Zhang, Shengli
name: Wang, Qi
name: Zhang, Erhu
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper, a new mesoscopic polygon which possesses smooth transition at its corners is proposed. Because of the particularity of structure, this kind of mesoscopic polygon can also be a geometrical supperlattice. The geometrical effects on the electron states and persistent current are investigated comprehensively in the presence of magnetic flux. We find that the particular geometric structure of the polygon induces an effective periodic potential which results in gaps in the energy spectrum. The changes of gaps show the consistency with the geometrical twoness of this new polygon. This electronic structure and the corresponding physical properties are found to be periodic with period $ϕ_{0}$ in the magnetic flux $ϕ$ and can be controlled by the geometric method. We also consider the Rahsba spin-orbit interaction which make the energy levels splitting newly to double and leads to an additional small zigzag in one period of the persistent current. These new phenomena may be useful for the applications in quantum device design in the future.
description: 10 pages, 6 figures
Quartically hyponormal weighted shifts need not be 3-hyponormal
Creators: name: Curto, Raul E.
name: Lee, Sang Hoon
Publisher: name: arXiv
Year: 2006
Subjects: subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 47B20; 47B37; 47A13

description: We give the first example of a quartically hyponormal unilateral weighted shift which is not 3-hyponormal.
A Case Study :Prevalence of Coliforms in Steamed Chicken Rice sold in Bangkok
Creators: name: Bhurin Julual
name: Eugene Patrick Ywin
name: Dhanakrit Adulytheerakij
name: Pattarachai Wangsuwan
Publisher: name: Zenodo
Year: 2024

description: Chicken rice is one of the famous dishes in Thailand and is the most popular food in Thailand. Chicken Rice Shop can be normally found everywhere in the community. Fresh and cooked chickens can sometimes contain a large amount of contaminants, so a comparative experiment had been conducted between the chicken rice in the store and the restaurants to see if the cleanliness of food and products differed. The objective of this study was to survey and analyze the prevalence of  coliform bacteria in steam rice chicken  from 24 shops from 5 major districts in Bangkok. From the 24 samples of steam rice chicken tested for coliform, 16 samples were found to contain coliform at the amount that exceed a safe level which 8 samples were from restaurant and the other 8 samples were from outdoor. There were no differences in hygiene quality in steam rice chicken between samples from restaurants and outdoor restaurants.
Steel billet reheating : an expert approach
Creators: name: Mui, Cliff
Publisher: name: University of British Columbia
Year: 2009

description: The manufacturing of steel bar products in mini-mills involves the continuous casting of billet sections, cooling of the billets, reheating to rolling temperatures and final shaping and size reduction in rolling mills. The operation of such furnaces can be a challenge due to the dynamic nature of both the reheating and rolling processes. The operation of a furnace was analyzed with the use of a SCADA data collection system, steady state and transient mathematical models. The new knowledge gathered in this way was complimented by existing knowledge from experienced mill personnel to form the basis for an expert system designed to offer timely advice to furnace operators. The result was the development of an industrial expert system leading to an increase in furnace mill productivity.
Vector mesons spectrum in a medium with a chiral imbalance induced by the vacuum of fermions
Creators: name: Kovalenko, Vladimir
name: Andrianov, Alexander
name: Andrianov, Vladimir
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The properties of the light vector mesons in the presence of local parity breaking medium with a chiral imbalance are considered in the vector-meson dominance model. Applying the finite lowest-order radiatively induced local effective Lagrangian, initially developed for the QED, for the vector $ρ$ and $ω$ mesons, we obtained the mass spectrum as a function of momentum and chiral chemical potential $μ_5$. We showed that in addition to the Chern-Simons term, splitting the transverse polarisations of the mesons, there is another radiatively induced contribution that becomes important at momentum and $μ_5$ around a few hundred MeV.
description: 6 pages, 2 figures, talk given at The 5th international conference on particle physics and astrophysics (ICPPA-2020), 5-9 October 2020, Moscow, Russia (Online)
Nonideal Mixing Effects in Warm Dense Matter Studied with First-Principles Computer Simulations
Creators: name: Militzer, Burkhard
name: Gonzalez-Cataldo, Felipe
name: Zhang, Shuai
name: Whitley, Heather D.
name: Swift, Damian C.
name: Millot, Marius
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study nonideal mixing effects in the regime of warm dense matter (WDM) by computing the shock Hugoniot curves of BN, MgO, and MgSiO_3. First, we derive these curves from the equations of state (EOS) of the fully interacting systems, which were obtained using a combination of path integral Monte Carlo calculations at high temperature and density functional molecular dynamics simulations at lower temperatures. We then use the ideal mixing approximation at constant pressure and temperature to rederive these Hugoniot curves from the EOS tables of the individual elements. We find that the linear mixing approximation works remarkably well at temperatures above ~2*10^5 K, where the shock compression ratio exceeds ~3.2. The shape of the Hugoniot curve of each compound is well reproduced. Regions of increased shock compression, that emerge because of the ionization of L and K shell electrons, are well represented and the maximum compression ratio on the Hugoniot curves is reproduced with high precision. Some deviations are seen near the onset of the L shell ionization regime, where ionization equilibrium in the fully interacting system cannot be well reproduced by the ideal mixing approximation. This approximation also breaks down at lower temperatures, where chemical bonds play an increasingly import role. However, the results imply that equilibrium properties of binary and ternary mixtures in the regime of WDM can be derived from the EOS tables of the individual elements. This significantly simplifies the characterization of binary and ternary mixtures in the WDM and plasma phases, which otherwise requires large numbers of more computationally expensive first-principles computer simulations.
description: 7 figures, 19 pages, 130 citations
Market Outcomes of Gender Inequality in Kenya
Creators: name: JULIUS MUNENE MAGANA
Publisher: name: Zenodo
Year: 2024

description: This study presents an analysis of the market outcomes of gender inequality across sectors in Kenya. The study tests the hypothesis that gender inequality persists in the labour market because of the characteristics of women and partly because of gender discrimination in wage setting. Ordinary least squares (OLS) methodology was used to explain participation and wages. According to the results of this study, education and other demographic factors are the key determinants of the choice of sector of employment and earnings in Kenya. The gender gap decomposition results suggest that men are favored in more sectors as opposed to women. The study recommends development of policy instruments to reduce gender inequalities in access to education and also government policies that minimize favoritism towards men in the labour market.
Levitation of superconducting micro-rings for quantum magnetomechanics
Creators: name: Navau, Carles
name: Minniberger, Stefan
name: Trupke, Michael
name: Sanchez, Alvaro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Applied Physics (physics.app-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Levitation of superconductors is becoming an important building block in quantum technologies, particularly in the rising field of magnetomechanics. In most of the theoretical proposals and experiments, solid geometries such as spheres are considered for the levitator. Here we demonstrate that replacing them by superconducting rings brings two important advantages: Firstly, the forces acting on the ring remain comparable to those expected for solid objects, while the mass of the superconductor is greatly reduced. In turn, this reduction increases the achievable trap frequency. Secondly, the flux trapped in the ring by in-field cooling yields an additional degree of control for the system. We construct a general theoretical framework with which we obtain analytical formulations for a superconducting ring levitating in an anti-Helmholtz quadrupole field and a dipole field, for both zero-field and in-field cooling. The positions and the trapping frequencies of the levitated rings are analytically found as a function of the parameters of the system and the field applied during the cooling process. Unlike what is commonly observed in bulk superconductors, lateral and rotational stability are not granted for this idealized geometry. We therefore discuss the requirements for simple superconducting structures to achieve stability in all degrees of freedom.
description: 8 pages, 4 figures
A precise mass measurement of PSR J2045+3633
Creators: name: McKee, J. W.
name: Freire, P. C. C.
name: Berezina, M.
name: Champion, D. J.
name: Cognard, I.
name: Graikou, E.
name: Guillemot, L.
name: Keith, M. J.
name: Kramer, M.
name: Lyne, A. G.
name: Stappers, B. W.
name: Tauris, T. M.
name: Theureau, G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results of a timing analysis undertaken with the goal of obtaining an improved mass measurement of the recycled pulsar J2045+3633. Using regular high-cadence observations with the Effelsberg, Nançay, and Lovell radio telescopes, together with targeted campaigns with the Arecibo Telescope and Effelsberg, we have assembled a 6-yr timing data set for this pulsar. We measure highly significant values for the proper motion and the related rate of change of orbital semi-major axis ($\dot{x}$), and have obtained high precision values of the rate of advance of periastron time ($\dotω$), and two of the Shapiro delay parameters ($h_{3}$ and $ς$). This has allowed us to improve the measurements of the pulsar and companion masses by an order of magnitude, yielding (with $1σ$ uncertainties) $1.251^{+0.021}_{-0.021}\,\text{M}_{\odot}$ for PSR J2045+3633, and $0.873^{+0.016}_{-0.014}\,\text{M}_{\odot}$ for its white dwarf companion, and has allowed us to place improved constraints on the geometrical orientation of the binary system. Using our measurements of the binary component masses and the orbital size, we consider possible evolutionary scenarios for the system.
description: 17 pages, 6 figures, accepted for publication in MNRAS
Hyponormality and subnormality for powers of commuting pairs of subnormal operators
Creators: name: Curto, Raul E.
name: Lee, Sang Hoon
name: Yoon, Jasang
Publisher: name: arXiv
Year: 2006
Subjects: subject: Functional Analysis (math.FA)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 47B20; 47B37; 47A13; 28A50

description: Let H_0 (resp. H_\infty denote the class of commuting pairs of subnormal operators on Hilbert space (resp. subnormal pairs), and for an integer k>=1 let H_k denote the class of k-hyponormal pairs in H_0. We study the hyponormality and subnormality of powers of pairs in H_k. We first show that if (T_1,T_2) is in H_1, then the pair (T_1^2,T_2) may fail to be in H_1. Conversely, we find a pair (T_1,T_2) in H_0 such that (T_1^2,T_2) is in H_1 but (T_1,T_2) is not. Next, we show that there exists a pair (T_1,T_2) in H_1 such that T_1^mT_2^n is subnormal (all m,n >= 1), but (T_1,T_2) is not in H_\infty; this further stretches the gap between the classes H_1 and H_\infty. Finally, we prove that there exists a large class of 2-variable weighted shifts (T_1,T_2) (namely those pairs in H_0 whose cores are of tensor form) for which the subnormality of (T_1^2,T_2) and (T_1,T_2^2) does imply the subnormality of (T_1,T_2).
Positivity domains for pairs of triples of spin observables
Creators: name: Artru, X.
name: Richard, J. -M.
name: Soffer, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Positivity restrains the allowed domains for pairs or triples of spin observables in polarised reactions. Various domain shapes in ${1\over2}+{1\over2}\to{1\over2}+{1\over2}$ reactions are displayed. Some methods to determine these domains are mentioned and a new one based on the anticommutation between two observables is presented.
description: Talk given by Xavier Artru at "DSPIN-07", XII Workshop on High-Energy Spin Physics, Dubna, Sept. 3-7, 2007, to appear in the Proceedings
Formation and evolution of protostellar accretion discs. I. Angular-momentum budget, gravitational self-regulation, and numerical convergence
Creators: name: Xu, Wenrui
name: Kunz, Matthew W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the formation and early evolution of a protostellar disc from a magnetized pre-stellar core using non-ideal magnetohydrodynamic (MHD) simulations including ambipolar diffusion and Ohmic dissipation. The dynamical contraction of the pre-stellar core ultimately leads to the formation of a first hydrostatic core, after ambipolar diffusion decouples the magnetic field from the predominantly neutral gas. The hydrostatic core accumulates angular momentum from the infalling material, evolving into a rotationally supported torus; this `first hydrostatic torus' then forms an accreting protostar and a rotationally supported disc. The disc spreads out by gravitational instability, reaching $\sim$30 au in diameter at $\sim$3 kyr after protostar formation. The total mass and angular momentum of the protostar-disc system are determined mainly by accretion of gas from an infalling pseudo-disc, which has low specific angular momentum because of magnetic braking; their removal from the protostar-disc system by outflow and disc magnetic braking are negligible, in part because the magnetic field is poorly coupled there. The redistribution of angular momentum within the protostar-disc system is facilitated mainly by gravitational instability; this allows formation of relatively large discs even when the specific angular momentum of infalling material is low. We argue that such discs should remain marginally unstable as they grow (with Toomre $Q\sim 1$-$2$), an idea that is broadly consistent with recent observational estimates for Class 0/I discs. We discuss the numerical convergence of our results, and show that properly treating the inner boundary condition is crucial for achieving convergence at an acceptable computational cost.
description: 20 pages, 21 figures; accepted by MNRAS
Καταγραφή των προβλημάτων των δημοσίων κτημάτων και η συμβολή του κτηματολογίου στην επίλυσή τους
Creators: name: Τσιβούλα, Αθηνά Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2006
Subjects: Δημόσια κτήματα
Προβλήματα
Κτηματολόγιο
Public estate
Problems
Cadastre

description: Αντικειμενικός σκοπός της εργασίας αυτής είναι η διερεύνηση και καταγραφή των σημαντικότερων τεχνικών, νομικών, διοικητικών και σύνθετων προβλημάτων που παρουσιάζονται κατά την καταγραφή, διαχείριση, αξιοποίηση και προστασία των κτημάτων κυρίως της ιδιωτικής περιουσίας του Δημοσίου από τους αρμόδιους φορείς και κατ' επέκταση η κριτική ανάλυση της συμβολής του κτηματολογίου στην επίλυση όλων αυτών των προβλημάτων. Λαμβάνοντας υπόψη την τεράστια σημασία της ιδιωτικής περιουσίας του δημοσίου σε επίπεδο πολιτικών, οργανωτικών και αναπτυξιακών δραστηριοτήτων στη χώρα μας, γίνεται αντιληπτό ότι όλα τα προβλήματα που σχετίζονται με αυτή επιζητούν άμεση και οργανωμένη λύση. Διαφορετικά οι συνέπειες αυτών θα εξακολουθήσουν να στέκονται εμπόδιο στην αξιοποίησή της ή ακόμη και να επιφέρουν απώλειες στην συνολική της έκταση. Μέσα από τη μελέτη των στοιχείων των σχετικών με τα δημόσια κτήματα γίνεται διερεύνηση του κατά πόσο τα συγκεκριμένα προβλήματα μπορούν να επιλυθούν ολοκληρωτικά μέσα στο πλαίσιο σύνταξης του Εθνικού Κτηματολογίου ή απαιτούνται άλλα μέτρα από πλευράς του Δημοσίου
description: The objective of the present thesis is the inquiry ito and recoring of the most importan techniqual, legal, administrative and complex problems that arise from the ways in which the official authorities concerned record, manage, exploit and protect the public estate that is mainly ruled by private law and the critical analysis of Cadastre contribution in the resolution of these problems
Entendimiento de las diferencias interculturales para una convivencia sin fronteras
Creators: name: Álvarez, María Cruz Cuevas
Publisher: name: figshare
Year: 2021
Subjects: Education

description: El objetivo de este artículo es el de invitar a una reflexión sobre las diferencias que surgen cuando se interactúa con personas de otras culturas y brindar respuestas teóricas a partir de revisión documental. La exposición a diversas culturas se ha incrementado por motivos de migración, intercambios o movilidad motivo por el cual la interculturalidad está presente en nuestra sociedad llevando con ello la imperiosa necesidad de orientar a la sociedad sobre el conocimiento de las diferencias que pueden surgir cuando se convive con una cultura diferente a la propia.
Abschlußdokument des Interorthodoxen Treffens "Bewertung neuer Fakten in den Beziehungen zwischen der Orthodoxie und der ökumenischen Bewegung" (Auszüge)
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 47 Nr. 3 (1998): Ökumenische Rundschau, Band 47, Heft 3