cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Diagnostic Enzymes for Kidney and Pancreas Function Tests
Creators: name: Lisa Clara
Publisher: name: Zenodo
Year: 2023

description: The primary function of kidneys is to remove waste and excess fluids from the blood through the production of urine. The pancreas is responsible for digestion enzymes and insulin production. The dysfunction of the kidney and pancreas at the early stage does not show apparent symptoms but could develop into severe impairment if remains untreated. Therefore. it is essential to detect kidney and pancreas dysfunction early. Creative Enzymes has been serving kidney & pancreas function diagnostic enzymes for years in the global market.
Effect of cells on spatial quantification of proteoglycans in articular cartilage of small animals
Creators: name: Karjalainen, Kalle
name: Tanska, Petri
name: Sibole, Scott C.
name: Mikkonen, Santtu
name: Herzog, Walter
name: Korhonen, Rami
name: Moo, Eng Kuan
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: Cancer

description: Histochemical characterization of proteoglycan content in articular cartilage is important for the understanding of osteoarthritis pathogenesis. However, cartilage cells may interfere with the measurement of matrix proteoglycan content in small animal models (e.g. mice and rats) due to the high cell volume fraction (38%) in mice compared to human tissue (~1%). We investigated whether excluding the cells from image analysis affects the histochemically measured proteoglycan content of rat knee joint cartilage and assessed the effectiveness of a deep learning algorithm-based tool named U-Net in cell segmentation. Histological sections were stained with Safranin-O, after which optical densities were measured using digital densitometry to estimate proteoglycan content. U-Net was trained with 600 annotated Safranin-O cartilage images for exclusion of cells from the cartilage extracellular matrix. Optical densities of the ECM with and without cells were compared as a function of normalized tissue depth. U-Net cell segmentation was accurate, with the measured cell area fraction following largely that of ground-truth images (average difference: 4.3%). Cell area fraction varied as a function of tissue depth and took up 8–21% of the tissue area. The exclusion of cells from the analysis led to an increase in the analyzed depth-dependent optical density of cartilage by approximately 0.6–1.8% (p < 0.01). Although the effect of cells on the analyzed proteoglycan content is small, it should be considered for improved sensitivity, especially at the onset of the disease during which cells may proliferate in small animals.
Cycle-related toxicity and transformation in 10T1/2 cells treated with N-methyl-N'-nitro-N-nitrosoguanidine.
Creators: name: Kaufman, D. G.
name: Greenberg, D. S.
name: Smith, G. J.
name: Grisham, J. W.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1980

description: Exposure of C3H 10T1/2 Cl 8 cells, synchronized by release from confluence-induced arest of proliferation, to different concentrations of N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) for 30 min at various points during the cell cycle causes dose-dependent toxicity (decrease in relative colony-forming efficiency or "survival") that increases linearly during the first G1 phase, reaches a maximum in early to middle S phase, and decreases during late S. In the course of the second S phase, toxicity again becomes maximal. The transformation rate (type III foci) increases and decreases with a similar pattern, increasing during the first G1 phase to a maximum during early S phase, subsequently decreasing, and then increasing again during the second S phase. Although periods of maximal toxicity and transformation roughly coincide with some portion of the S phase, the mechanisms underlying these phenomena appear to differ for the following reasons: (a) toxicity is linearly related to dose of MNNG, whereas the latter is linearly related to the logarithm of transformation rate, and (b) the ratio between toxicity and transformation varies with the cycle phase and the dose of MNNG.
Proanthocyanidins inhibit the apoptosis and aging of nucleus pulposus cells through the PI3K/Akt pathway delaying intervertebral disc degeneration
Creators: name: Chen, Hai-Wei
name: Liu, Ming-Qiang
name: Zhang, Guang-Zhi
name: Zhang, Cang-Yu
name: Wang, Zhao-Heng
name: Lin, Ai-Xin
name: Kang, Ji-He
name: Liu, Wen-Zhao
name: Guo, Xu-Dong
name: Wang, Yi-Dian
name: Kang, Xue-Wen
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Inorganic Chemistry

description: Low back pain is a common symptom of intervertebral disc degeneration (IDD), which seriously affects the quality of life of patients. The abnormal apoptosis and senescence of nucleus pulposus (NP) cells play important roles in the pathogenesis of IDD. Proanthocyanidins (PACs) are polyphenolic compounds with anti-apoptosis and anti-aging effects. However, their functions in NP cells are not yet clear. Therefore, this study was performed to explore the effects of PACs on NP cell apoptosis and aging and the underlying mechanisms of action. Cell viability was evaluated by cell counting kit-8 (CCK-8) assay. The apoptosis rate was determined TUNEL assays. Levels of apoptosis-associated molecules (Bcl-2, Bax, C-caspase-3 and Caspase-9) were evaluated via western blot. The senescence was observed through SA-β-gal staining and western blotting analysis was performed to observe the expression of senescence-related molecules (p-P53, P53, P21 and P16). Pretreatment with PACs exhibited protective effects against IL-1β-induced NP cell apoptosis including apoptosis rate, expressions of proapoptosis and antiapoptosis related genes and protein. PACs could also alleviate the increase of p-p53, P21, and P16 in IL-1β-treated NP cells. SA-β-gal staining showed that IL-1β-induced senescence of NP cells was prevented by PACs pertreatment. In addition, PACs activated PI3K/Akt pathway in IL-1β-stimulated NP cells. However, these protected effects were inhibited after LY294002 treatment. The results of the present study showed that PACs inhibit IL-1β-induced apoptosis and aging of NP cells by activating the PI3K/Akt pathway, and suggested that PACs have therapeutic potential for IDD.
Frequency and levels of antibodies to Epstein-Barr virus-specific DNase are elevated in patients with nasopharyngeal carcinoma.
Creators: name: Cheng, Y. C.
name: Henle, W.
name: Glaser, R.
name: Chen, J. Y.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1980

description: Sera from healthy individuals and patients with infectious mononucleosis, Burkitt lymphoma, nasopharyngeal carcinoma, or other malignancies were examined for their capacity to neutralize Epstein-Barr virus (EBV)-induced DNase activity. Sera were found that neutralized the EBV DNase but not herpes simplex virus type 1 or type 2 DNases, and vice versa. Sera from 46 of the 49 patients with nasopharyngeal carcinoma examined (94%) neutralized > 6 units of EBV DNase per ml of serum. In contrast, only 19% of 47 patients with Burkitt lymphoma, 12% of 183 patient with other malignancies, 4% of 58 patients with infectious mononucleosis, and none of 101 healthy individuals had such levels of neutralizing activity. The neutralizing factor was found in the IgG fraction derived from nasopharyngeal carcinoma sera. There was no correlation between the concentration of these antibodie and the titers of IgG ad IgA antibodies to the EBV capsid antigen, the early antigen complex, or the EBV-associated nuclear antigen.
Στρατηγικό μάνατζμεντ & διοίκηση ολικής ποιότητας: μελέτη περίπτωσης Montelez International - Σοκολατοποιΐα Παυλίδης
Creators: name: Τσόρβα, Αικατερίνη
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2022
Subjects: subject: Στρατηγικό μάνατζμεντ
subject: Στρατηγική ανάπτυξης
subject: Τεχνικές διοίκησης ολικής ποιότητας
subject: Στρατηγική διοίκηση ολικής ποιότητας

description: Η διπλωματική εργασία δημιουργήθηκε με σκοπό να συνδέσει το Στρατηγικό Μάνατζμεντ και τη Διοίκηση Ολικής Ποιότητας. Αναλύθηκε το Στρατηγικό Μάνατζμεντ και ο τρόπος με τον οποίο εκείνο δίνει τη δυνατότητα στις επιχειρήσεις να αναπτύσσονται και να εξελίσσονται στον κλάδο όπου επιχειρούν. Στη συνέχεια δόθηκε ιδιαίτερη έμφαση στη Διοίκηση Ολικής Ποιότητας επιχειρώντας την ιστορική εξέλιξη της συγκεκριμένης διοίκησης και πώς εκείνη αναδείχθηκε ως σημαντική για την ανάπτυξη της εταιρείας. Αναλύθηκαν εξονυχιστικά όλες οι τεχνικές όπου υπάρχουν και χρησιμοποιούνται από τις επιχειρήσεις, από εκείνες όπου υπάρχουν από τις αρχές του 1920 ως και τις πιο σύγχρονες τεχνικές που έχουν αναπτυχθεί πρόσφατα. Ακολούθως δίνεται ιδιαίτερη προσοχή στα οφέλη που προσφέρει στις επιχειρήσεις η Διοίκηση Ολικής Ποιότητας, τα οποία ποικίλλουν. Εν συνεχεία, παρατίθενται ο τρόπος με τον οποίο μπορεί να επιτευχθεί η αποτελεσματική σύμπραξη. Πιο αναλυτικά, το Στρατηγικό Μάνατζμεντ θεωρείται καίρια ενέργεια για την επιχείρηση. Στην περίπτωση όπου η επιχείρηση επιθυμεί να εντάξει στις λειτουργίες της τη Διοίκηση Ολικής Ποιότητας, για να γίνει αυτό αποτελεσματικά απαιτείται να εμπεριέχεται εντός του Στρατηγικού Μάνατζμεντ. Κάτι τέτοιο χρειάζεται να γίνει με σκοπό να εφαρμοστεί με τον βέλτιστο τρόπο η Διοίκηση Ολικής Ποιότητας. Τέλος, παρουσιάζεται η μελέτη περίπτωσης για την πολυεθνική εταιρεία Montelez Int. και τη θυγατρική της εταιρεία Σοκολατοποιΐα Παυλίδη. Περιγράφεται όλη η ιστορική αναδρομή του εργοστασίου Παυλίδη, το οποίο είναι το πρώτο Ελληνικό εργοστάσιο που ξεκίνησε να παράγει προϊόντα σοκολάτας. Έπειτα ανιχνεύεται το περιβάλλον της επιχείρησης, τόσο το εσωτερικό όσο και το εξωτερικό. Τέλος, αναφέρονται όλες οι τεχνικές ποιότητας που εφαρμόζονται από την εταιρεία Montelez και το εργοστάσιο Παυλίδη.
Fusion of liposomes with mitochondrial inner membranes
Creators: name: Schneider, H.
name: Hackenbrock, C. R.
name: Hochli, M.
name: Lemasters, J. J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1980

description: A procedure is outlined for the fusion of mixed phospholipid liposomes (small unilamellar vesicles) with the mitochondrial inner membrane, which enriches the membrane lipid bilayer 30-700% in a controlled fashion. Fusion was initiated by manipulation of the pH of a mixture of freshly sonicated liposomes and the functional inner membrane/matrix fraction of rat liver mitochondria. During the pH fusion procedure, liposomes became closely apposed with and sequestered by the inner membranes as revealed by freeze-fracture electron microscopy. After the pH fusion procedure, a number of ultrastructural, compositional, and functional characteristics were found to be proportionally related: the membrane surface area increased; the lateral density distribution of intramembrane particles (integral proteins) in the plane of the membrane decreased whereas the particles remained random; the membrane became more buoyant; the ratio of membrane lipid phosphorus to total membrane protein increased; the ratio of membrane lipid phosphorus to heme a of cytochrome c oxidase increased; and the rate of electron transfer between some interacting membrane oxidoreduction proteins decreased. These data reveal that liposomal phospholipid was incorporated into the membrane bilayer (not simply adsorbed to the membrane surface) and that integral membrane proteins diffused freely into the laterally expanding bilayer. Furthermore, the data suggest that the rate of electron transfer may be limited by the rate of lateral diffusion of oxidoreduction components in the bilayer of the mitochondrial inner membrane.
title: Le secondaire à la rencontre du primaire : quand les élèves deviennent enseignants de CLIL
title: Le secondaire à la rencontre du primaire : quand les élèves deviennent enseignants de CLIL
titleType: AlternativeTitle
Creators: name: Boulat, Johanne
Publisher: name: Unknown
Year: 0
Subjects: subject: Perspective actionnelle
subject: CLIL
subject: vidéo
subject: primaire
subject: anglais
subject: science

description: En suivant la perspective actionnelle, ce mémoire a fait de mes élèves des enseignants de CLIL (Content and Language Integrated Learning). L’objectif était de déterminer si cela augmenterait leur motivation, améliorerait leurs compétences à l’orale en anglais et ferait sens à leurs yeux. Je voulais aussi savoir si cela développerait leur confiance et s’il aurait une attitude positive. Deux classes de première année au Gymnase de Renens ont participé : l’une d’entre elles a l'option spécifique biologie et chimie (20 élèves) et l’autre, physique et applications des mathématiques (23 élèves). En accord avec leurs intérêts, le projet consistait à faire des vidéos en anglais sur un thème scientifique. Les vidéos étaient destinées à des enfants de 9 à 14 ans apprenant l’anglais à l’EPS Crissier (2 classes de 5p et une de 8p) et à la Volkschule de Lucerne (une classe hétérogène). La pré-tâche s’est faite à l’aide d’une séquence conçue pour préparer les élèves à la production de leur vidéo : l’élaboration d’une grille d’évaluation, un travail sur la prononciation et l’intonation, une préparation au montage des vidéos et un retour sur les planifications de vidéo faites par les élèves. Pour la tâche, les élèves se sont retrouvés en dehors des heures de cours pour filmer leur vidéo et faire le montage. La post-tâche consistait à envoyer les vidéos aux autres écoles, les faire visionner aux enfants et recevoir un retour. Les résultats suggèrent que le projet a suscité de l’intérêt, a motivé mes élèves, les a fait progresser et était en lien avec leur réalité. Les élèves et enseignants en primaire ont globalement apprécié cet échange. Toutefois, nous avons rencontré certaines difficultés (au niveau de l’adaptation des vidéos à un public plus jeune et du montage des vidéos, par exemple) et il reste des points à améliorer pour de futurs projets. Malgré sa complexité, les points forts (le lien avec la réalité de mes élèves et l’aspect collaboratif entre autres) m’encouragent à refaire un projet semblable.
In vitro synthesis of 1 alpha,25-dihydroxycholecalciferol and 24,25-dihydroxycholecalciferol by isolated calvarial cells.
Creators: name: Lester, G. E.
name: Howard, G. A.
name: Baylink, D. J.
name: Puzas, J. E.
name: Gray, T. K.
name: Forte, M. D.
name: Turner, R. T.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1980

description: The question of whether the skeleton metabolizes 25-hydroxycholecalciferol [25(OH)D3] to more-polar products was studied. Calvarial cells were dispersed from 16-day old chicken embryos by using collagenase and then grown in culture in serum-free medium. Confluent cell cultures were incubated with 7 nM 25(OH)[3H]D3 for 2 hr, and the vitamin D metabolites were then extracted. At least four polar metabolites were produced. Based on separation by Sephadex LH-20 chromatography followed by high-pressure liquid chromatography, two of these metabolites were identified as 1,25-dihydroxycholecalciferol [1,25(OH)2D3] and 24,25-dihydroxycholecalciferol [24,25(OH)2D3]. These metabolites were also produced by cultured kidney cells but not by liver, heart muscle, or skin cells isolated from the same embryos. The specific activities of the calvarial 1- and 24-hydroxylases were similar in magnitude to those in isolated kidney cells. The specific activity of the calvarial 25(OH)D3:1-hydroxylase was inhibited by an 8-hr preincubation with 1,25(OH)2D3, whereas the 24-hydroxylase was enhanced. It is concluded that (i) vitamin D metabolism by isolated cells is organ-specific, (ii) calvarial cells produce active metabolites of vitamin D in significant amounts, (iii) vitamin D metabolism by calvarial cells is regulated by 1,25(OH)2D3, and (iv) locally produced, active metabolites could act locally, thereby adding a new dimension to the regulation of mineral metabolism by vitamin D metabolites.
Localization of androgen-binding protein in proliferating Sertoli cells in culture.
Creators: name: Petrusz, P.
name: Spruill, W. A.
name: Tres, L. L.
name: Feldman, M.
name: French, F. S.
name: Kierszenbaum, A. L.
name: Lea, O.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1980

description: The peroxidase and immunofluorescent localization patterns of androgen-binding protein (ABP), a biological marker of Sertoli cell function, have been examined in cultured Sertoli cells isolated from 20- to 22-day-old rats. ABP immunoreactivity in the form of cytoplasmic granules of variable diameter was observed in Sertoli cells with characteristic lipid droplets and a colony-forming, epithelial-like growth pattern. Incubation of cultures with [3H]thymidine demonstrated that Sertoli cells continue to produce ABP while retaining their capability for synthesizing DNA and undergoing mitosis. A variable number of cultured Sertoli cells became morphologically transformed after exposure to follitropin (follicle-stimulating hormone) and pharmacological agents acting on cyclic nucleotide metabolism. The induced change in Sertoli cell shape coincided with a disappearance of ABP-containing granules from the cytoplasm. These observations demonstrate that localization of ABP by immunological techniques is a valuable tool for the characterization of structural and functional properties of Sertoli cell in culture.
Quantitative genetic variation of enzyme activities in natural populations of Drosophila melanogaster
Creators: name: Lucchesi, J. C.
name: Laurie-Ahlberg, C. C.
name: Weir, B. S.
name: Bewley, G. C.
name: Maroni, G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1980

description: The genetic component of variation of enzyme activity in natural populations of
title: Προμελέτη της εμπειρίας των ναυτικών κατά τη διάρκεια της πανδημίας Covid-19
title: Preliminary study on seafarers’ experience during the Covid-19 pandemic
titleType: AlternativeTitle
Creators: name: Μαρινάκη, Δέσποινα
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2022
Subjects: Κρίση αλλαγής πληρώματος
Αντικατάσταση ναυτικών
Ψυχική υγεία ναυτικών
Επαναπατρισμός

description: Η πανδημία της Covid-19 έχει επηρεάσει σημαντικά την ανθρωπότητα και τις οικονομικές δραστηριότητες. Καθώς πολλές χώρες αντιμετωπίζουν προκλήσεις προκειμένου να διασφαλίσουν τις αλυσίδες εφοδιασμού τους, η σημασία της ναυτιλακής δραστηριότητας είναι περισσότερο από ποτέ εμφανής, όπως και η συνεισφορά των ναυτικών είναι ζωτικής σημασίας για την υποστήριξη της συνεχούς λειτουργίας των πλοίων. Ωστόσο, κατά τη διάρκεια της πανδημίας, οι αυστηροί περιορισμοί στα ταξίδια και το κλείσιμο των συνόρων δημιουργεί μία άνευ προηγουμένου κρίση αλλαγής πληρώματος, φέρνοντας τους ναυτικούς αντιμέτωπους με ποικίλες προκλήσεις, που αφορούν στην υγεία, την ασφάλεια και την ευημερία του πληρώματος εν γένει. Ναυτικοί μένουν εγκλωβισμένοι στα πλοία, χωρίς την προοπτική επαναπατρισμού, ενώ ταυτόχρονα γίνονται επεκτάσεις των συμβολαίων τους, σηματοδοτώντας τη μη συμμόρφωση με τους διεθνείς ναυτιλιακούς κανονισμούς. Από την άλλη πλευρά, ναυτικοί μένουν εγκλωβισμένοι στην ξηρά, καθώς τα μέτρα πρόληψης που σχετίζονται με την πανδημία δημιουργούν εμπόδια στην ανάληψη συμβάσεων εργασίας σε πλοία. Έτσι, η απαιτητική φύση της ναυτικής εργασίας εντείνεται, επιφέροντας πολύπλοκους κινδύνους για την ψυχική και σωματική υγεία των ναυτικών, την ασφάλεια τους, αλλά και την οικονομική τους κατάσταση. Στο παρόν έγγραφο διεξάγονται συνεντεύξεις με Έλληνες ναυτικούς, προκειμένου να διερευνηθεί ο αντίκτυπος της πανδημίας στις συνθήκες εργασίας των ναυτικών. Συλλέγοντας δεδομένα από 21 συμμετέχοντες, τα κυριότερα ευρήματα αφορούν σε αναγκαστικές επεκτάσεις συμβολαίων και παράταση της παραμονής των ναυτικών εντός των πλοίων, χωρίς τη δυνατότητα αποσυμπίεσης στην στεριά, γεγονός που προκαλεί αρνητικά συναισθήματα, επιδεινώνει την ψυχική υγεία, ενώ παράλληλα η σωματική κούραση συσσωρεύεται. Καθώς εξελίσσεται η πανδημία, η ψυχολογική υποστήριξη, η φροντίδα υγείας και οι οικονομικές λύσεις είναι ζωτικής σημασίας για τους ναυτικούς.
title: Мұнай және газ өндіру технологиясы мен техникасы. 2 бөлікте. 1 бөлім
Creators: name: ELS IPR BOOKS
Publisher: name: EDP Hub (Идипи Хаб), Ай Пи Ар Медиа
Year: 2024

description: Оқу құралында мұнай мен газ кенорындарын игеру заңдылықтары, мұнай шөгінді жыныстарының жалпы сипаттамасы, қойнауқат энергия көздері, мұнай шөгінді жыныстарына әсер ету техникасы мен технологиясы жан-жақты көрсетілген. «Мұнай газ ісі», «Экология» мамандықтары бойынша оқитын студенттерге арналған.
Non-Markovianity degree for random unitary evolution
Creators: name: Chruściński, Dariusz
name: Wudarski, Filip A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the non-Markovianity degree for random unitary evolution of d-level quantum systems. It is shown how non-Markovianity degree is characterized in terms of local decoherence rates. In particular we derive a sufficient condition for vanishing of the back ow of information.
Sequential addition of platelet factor and plasma to BALB/c 3T3 fibroblast cultures stimulates somatomedin-C binding early in cell cycle.
Creators: name: Clemmons, D. R.
name: Pledger, W. J.
name: Van Wyk, J. J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1980

description: Recent studies have shown that confluent cultured fibroblasts must be rendered competent by a factor contained in platelets before they can respond to plasma components and progress from G0 to S phase of the cell cycle. Somatomedin-C is one of the components of platelet-poor plasma necessary for cell cycle progression, but other factors present in somatomedin-C-deficient plasma are also required. Because both competence and progression factors contained in somatomedin-C-deficient serum modulate somatomedin-C action in fibroblasts, this study was undertaken to examine their possible influence on the binding of 125I-labeled somatomedin-C. Exposure of BALB/c 3T3 fibroblasts to high concentrations of platelet-derived growth factor alone prevented the time-dependent decrease in somatomedin-C binding which occurs in serum-free medium. Lower concentrations of the growth factor or 5% (vol/vol) platelet-poor plasma reduced but did not abolish this decrease. In contrast, sequential addition of platelet-derived growth factor followed by platelet-poor plasma resulted in a 75% increase in 125I-labeled somatomedin-C binding over basal levels during the first 2 hr. Binding increased by 125% when somatomedin-C-deficient platelet-poor plasma was substituted for normal platelet-poor plasma. The hormonal induction of somatomedin-C receptors appears to be a mechanism whereby peptide growth factors such as platelet-derived growth factor may condition the cell to respond optimally to somatomedin-C.
Electrical Machines IV EMAC4P 0/0
Creators: name: Appiah, Edward Kofi
Publisher: name: Walter Sisulu University
Year: 2022
Subjects: Electrical machines and drives
Electrical engineering not elsewhere classified

description: Subject : Electrical Machines IV Subject code : EMAC4P 0/0 Qualification : B.Tech Engineering: Electrical Examiners : Mr Edward Kofi Appiah Moderator : Mr J. Bentil Date : June 2019
Spectral synthesis of stellar populations in the 3D era: The CALIFA experience
Creators: name: Fernandes, R. Cid
name: Lacerda, E. A. D.
name: Delgado, R. M. González
name: Asari, N. Vale
name: García-Benito, R.
name: Pérez, E.
name: de Amorim, A. L.
name: Cortijo-Ferrero, C.
name: Fernández, R. López
name: Sánchez, S. F.
name: collaboration, the CALIFA
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Methods to recover the fossil record of galaxy evolution encoded in their optical spectra have been instrumental in processing the avalanche of data from mega-surveys along the last decade, effectively transforming observed spectra onto a long and rich list of physical properties: from stellar masses and mean ages to full star formation histories. This promoted progress in our understanding of galaxies as a whole. Yet, the lack of spatial resolution introduces undesirable aperture effects, and hampers advances on the internal physics of galaxies. This is now changing with 3D surveys. The mapping of stellar populations in data-cubes allows us to figure what comes from where, unscrambling information previously available only in integrated form. This contribution uses our starlight-based analysis of 300 CALIFA galaxies to illustrate the power of spectral synthesis applied to data-cubes. The selected results highlighted here include: (a) The evolution of the mass-metallicity and mass-density-metallicity relations, as traced by the mean stellar metallicity. (b) A comparison of star formation rates obtained from Hα to those derived from full spectral fits. (c) The relation between star formation rate and dust optical depth within galaxies, which turns out to mimic the Schmidt-Kennicutt law. (d) PCA tomography experiments.
description: 6 pages, 4 figures. Galaxies in 3D across the Universe. Proceedings IAU Symposium No. 309, 2014
Circulant orbitals for atoms and molecules
Creators: name: Chen, M.-B.
name: Parr, R. G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: Circulant orbitals varphi(n) for a closed-shell system are the orbitals obtained when the N canonical orthonormal Hartree-Fock orbitals lambda([unk]) are subjected to a unitary transformation which is the discrete Fourier transformation: varphi(n) = 1/ radicalN Sigma([unk])lambda([unk])omega((n-1)([unk]-1)), where omega = exp(2pii/N). Electron densities associated with the orbitals varphi(n) are each close to the average total electron density. The Fock matrix, diagonal for canonical orbitals, for circulant orbitals is a Hermitian circulant matrix, epsilon(m, m+q) = 1/N Sigma([unk])epsilon([unk])omega(q([unk]-1)), where the epsilon([unk]) are the canonical orbital energies. The states ;Fvarphi(n) are uniformly distributed on the surface of a sphere in Hilbert space.
Diffusion of injected macromolecules within the cytoplasm of living cells.
Creators: name: Schlegel, R. A.
name: Wu, E. S.
name: Wojcieszyn, J. W.
name: Jacobson, K. A.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: The diffusion of macromolecules introduced into the cytoplasm of human fibroblasts by erythrocyte-mediated microinjection was measured by the fluorescence recovery after photobleaching technique. The apparent diffusion coefficients for fluorescein-labeled IgG and fluorescein-labeled bovine serum albumin were approximately 10(-8) cm2/sec at 22 degrees C, consistent with the kinetics of spreading of the fluorescent probe following microinjection and approximately 1/70 the values in aqueous buffer. The diffusion of labeled bovine serum albumin was shown to be strongly dependent on temperature and, in fact, similar to that expected in a 61% aqueous sucrose solution. However, the marked reduction in diffusion at 5 degrees C could be fully reversed by incubation with 0.1 mM colchicine. These findings suggest that cytoplasmic diffusion rates are reduced relative to rates in aqueous media as a result of increased aqueous phase viscosity or the impedence provided by structural elements. Several simple models to account for the data are presented.
title: Rudolf Hess Collection
Creators: name: Uniformed Services University of the Health Sciences
Publisher: name: University Archives, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814
Year: 2010
Subjects: classificationCode: 3
subject: FOS: Medical and health sciences
classificationCode: 6.1
subject: FOS: History and archaeology

description: USUHS Archives Finding Aid
Rudolf Hess Collection
2010
Hyperoxia and hypoxia in pregnancy: simple experimental manipulation alters the incidence of cleft lip and palate in CL/Fr mice.
Creators: name: Millicovsky, G.
name: Johnston, M. C.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: This paper describes alterations in the incidence of cleft lip and palate in CL/Fr mice subsequent to experimental manipulation of maternal respiratory oxygen levels during a critical period of pregnancy. Only a few previous studies have shown that the incidence of some "genetically determined" malformations in mammals can be decreased by environmental procedures. In addition to demonstrating a decreased incidence of cleft lip and palate subsequent to maternal hyperoxia on gestational days 10 and 11 in a genetically susceptible strain, the results of the present study show that hypoxia at this time increases the incidence of cleft lip and palate.
Isolation of lymphocyte membrane complement receptor type two (the C3d receptor) and preparation of receptor-specific antibody.
Creators: name: Lambris, J. D.
name: Ross, G. D.
name: Dobson, N. J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: A glycoprotein binding complement component C3d was isolated from media used for culture of Raji human lymphoblastoid cells. Analysis by sodium dodecyl sulfate/polyacrylamide gel electrophoresis and gas/liquid chromatography indicated that the C3d-binding glycoprotein consisted of a single polypeptide chain with extensive intrachain disulfide bonds, a molecular weight of 72,000, and several different bound carbohydrates. Several lines of evidence indicated that this medium-derived C3d-binding protein originated from membrane complement receptor type two (CR2, the C3d receptor), presumably shed during membrane turnover. The C3d-binding protein bound to sheep erythrocytes coated with C3d (EC3d) but not to sheep erythrocytes coated with C3b (EC3b). Antisera, prepared by immunization with the purified C3d-binding glycoprotein, inhibited lymphocyte rosette formation with EC3d but not with EC3b. Analysis by sodium dodecyl sulfate gel electrophoresis of the radiolabeled and solubilized lymphocyte antigens reactive with the anti-C3d-binding protein sera revealed a single-chain cell-surface protein of molecular weight 72,000 that was apparently identical to the isolated C3d-binding protein. Parallel assay of lymphocytes for Cr2 by direct immunofluorescence with F(ab')2 anti-C3d-binding protein (anti-CR2) and rosette formation with EC3d indicated that both assays had the same specificity and nearly the same sensitivity. With both systems CR2 expression was limited to B cells, and was undetectable on T cells, monocytes, or neutrophils.
Measurements and modelling of the kinetics of thermally activated delayed fluorescence
Creators: name: Diesing, Stefan
Publisher: name: The University of St Andrews
Year: 2023
Subjects: subject: TADF
subject: OLED
subject: Thermally activated delayed fluorescence
subject: Organic light-emitting diodes
subject: Kinetics
subject: Photophysics
subject: TK7871.89L53D5
subject: Light emitting diodes
subject: Fluorescence

description: Efficient organic light-emitting diodes (OLEDs) enable the commercialisation of energy efficient and high contrast displays, and are being exploited increasingly in telecommunication and biomedical applications. In an efficient OLED all electrically generated singlet and triplet excitons recombine to emit light. In recent years, the exploitation of emitters that show thermally activated delayed fluorescence (TADF) has proven to be a complementary strategy to phosphors that leads to devices of comparable efficiencies without relying on scarce metals in the emitter design. In this thesis, the kinetics of TADF are explored. First, two families of novel emitters are discussed by investigating their photophysics. One series incorporates a novel pyridazine acceptor whilst the other series makes use of a through-space conjugated donor design using a [2,2]paracyclophane. In both families of emitters, the emitter with the largest donor strength showed efficient triplet up-conversion via TADF in OLEDs. The kinetics of TADF can be calculated from a bimolecular fit of the transient photo- luminescence (PL). However, in the literature, different assumptions are used to calculate rate constants from these data. Therefore, a three-level model was analysed to understand the limiting cases employed in literature. The transient PL of TADF is characterised by two decay regimes that stretch over multiple orders of magnitude in time and intensity. This makes recording both regimes in one measurement challenging. To solve this, first improvements and implementations of existing techniques are discussed. In order to remove the need to measure over a large dynamic range of intensities a novel measurement technique was developed which allows the extraction of kinetic parameters of TADF by recording the emission during a step-function excitation. Finally, a figure of merit based on the TADF kinetics under constant electrical excitation was developed to evaluate new TADF emitters for use in OLED with low efficiency roll-off.
Phase Diagram of Fractional Quantum Hall Effect of Composite Fermions in Multi-Component Systems
Creators: name: Balram, Ajit C.
name: Tőke, Csaba
name: Wójs, A.
name: Jain, J. K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: While the integer quantum Hall effect of composite fermions manifests as the prominent fractional quantum Hall effect (FQHE) of electrons, the FQHE of composite fermions produces further, more delicate states, arising from a weak residual interaction between composite fermions. We study the spin phase diagram of these states, motivated by the recent experimental observation by Liu {\em et al.} \cite{Liu14a,Liu14b} of several spin-polarization transitions at 4/5, 5/7, 6/5, 9/7, 7/9, 8/11 and 10/13 in GaAs systems. We show that the FQHE of composite fermions is much more prevalent in multicomponent systems, and consider the feasibility of such states for systems with ${\cal N}$ components for an SU(${\cal N}$) symmetric interaction. Our results apply to GaAs quantum wells, wherein electrons have two components, to AlAs quantum wells and graphene, wherein electrons have four components (two spins and two valleys), and to an H-terminated Si(111) surface, which can have six components. The aim of this article is to provide a fairly comprehensive list of possible incompressible fractional quantum Hall states of composite fermions, their SU(${\cal N}$) spin content, their energies, and their phase diagram as a function of the generalized "Zeeman" energy. We obtain results at three levels of approximation: from ground state wave functions of the composite fermion theory, from composite fermion diagonalization, and, whenever possible, from exact diagonalization. Effects of finite quantum well thickness and Landau level mixing are neglected in this study. We compare our theoretical results with the experiments of Liu {\em et al.} \cite{Liu14a,Liu14b} as well as of Yeh {\em et al.} \cite{Yeh99} for a two component system.
description: 29 pages, 6 figures
Undersea Internet Cables in the Pacific Part 1: Recent and Planned Expansion
Creators: name: Watson, Amanda H A
Publisher: name: Canberra, ACT: Dept. of Pacific Affairs, Coral Bell School of Asia Pacific Affairs, The Australian National University
Year: 2021

description: This is the first of two In Briefs looking at undersea internet cables in the Pacific region. Such cables allow the transfer of internet data through optical fibre and offer an alternative to satellite technology. This In Brief includes a map showing international internet cables for Pacific Island countries and a table indicating the cable laying companies, completion dates and funding arrangements. An accompanying paper explores relevant cybersecurity risks, geopolitical issues and questions of reliability.
title: Etude de l'approche actionnelle utilisée pour la lecture de textes littéraires en allemand et de son impact sur l'appréciation et les apprentissages des élèves
title: Etude de l'approche actionnelle utilisée pour la lecture de textes littéraires en allemand et de son impact sur l'appréciation et les apprentissages des élèves
titleType: AlternativeTitle
Creators: name: Willemin, Cristina
Publisher: name: Unknown
Year: 0
Subjects: subject: approche actionnelle
subject: méthode traditionnelle
subject: didactique de l’allemand
subject: littérature
subject: appréciation
subject: apprentissages

description: Dans ce mémoire, j’ai étudié l’impact qu’une approche (actionnelle ou traditionnelle) peut avoir sur l’appréciation et les apprentissages des élèves quand il s’agit de lire un livre en allemand langue étrangère (en l’occurrence Die weiße Rose de Inge Scholl en édition EasyReaders). L’objectif a été d’identifier quelles activités captivent et stimulent les élèves. J’ai tout d’abord posé ma problématique et mes hypothèses, puis le cadre théorique et enfin, ma méthodologie. Par la suite, j’ai détaillé les leçons que j’ai conduites : une a été menée avec une méthode plus traditionnelle (questions sur le livre), les autres ont été plus actionnelles. Suite à quoi, j’ai distribué à mes étudiants un questionnaire avec des questions fermées et ouvertes. Ce matériel m’a fourni des données qui m’ont permis de mieux comprendre l’impact des approches que j’ai utilisées et ainsi répondre à ma problématique.
Modification of microtubule steady-state dynamics by phosphorylation of the microtubule-associated proteins.
Creators: name: Caplow, M.
name: Jameson, L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: Phosphorylation of purified microtubule-associated proteins (MAPs) inhibits the rate and extent of MAP-stimulated microtubule assembly. The extent of microtubule assembly is reduced as a result of a decrease in the fraction of tubulin polymerized, without a significant change in the critical protein concentration. The decreased rate of microtubule assembly using phosphorylated MAPs reflects a reduction in microtubule nucleation resulting in fewer, but 2-fold longer, microtubules at steady state. Analysis of microtubule (MT) dynamics at steady state reveals that the rate of directional incorporation of subunits (flux) is 22 subunits.MT-1.sec-1 with phosphorylated MAPs, compared to 10 subunits.MT-1.sec-1 with unphosphorylated MAPs. The initial rate of disassembly determined by isothermal dilution is 232 subunits.MT-1.sec-1 for microtubules assembled with phosphorylated MAPs, compared to 102 subunits.MT-1.sec-1 for microtubules assembled with unphosphorylated MAPs. By using these results, the directionality (the number of successful subunit additions relative to the total number of association events per unit time) for subunit addition is found to be 0.1 for microtubules assembled with either phosphorylated or unphosphorylated MAPs. These observations are interpreted in terms of a mechanism in which phosphorylation of MAPs increases the rate of steady-state subunit flux by an equivalent enhancement of the rates of subunit association and dissociation, such that the critical protein concentration and directionality remain unchanged.
China's Third White Paper on Foreign Aid — A Comparative Analysis
Creators: name: Zhang, Denghua
Publisher: name: Canberra, ACT: Dept. of Pacific Affairs, Research School of Pacific and Asian Studies, The Australian National University
Year: 2021

description: The long-anticipated China’s third white paper on foreign aid was released by the Chinese government on 10 January 2021 (State Council 2021). It covers Chinese aid in the period 2013–18. This In Brief compares the 2021 white paper with the previous two, released in 2014 and 2011, and reveals some of the new features of Chinese aid, including the intention to reform aid planning, delivery and evaluation and provide improved aid statistics. Table 1 reveals that Chinese yearly foreign aid grew by more than three times to US$5.1 billion in 2010–12 and further rose to US$7 billion in 2013–18.
Hetero pairing and component-dependent pseudogap phenomena in an ultracold Fermi gas with mass imbalance
Creators: name: Hanai, Ryo
name: Ohashi, Yoji
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate the superfluid phase transition and single-particle excitations in the BCS (Bareen-Cooper-Schrieffer)-BEC (Bose-Einstein condensation) crossover regime of an ultracold Fermi gas with mass imbalance. In our recent paper [R. Hanai, et. al., Phys. Rev. A 88, 053621 (2013)], we showed that an extended $T$-matrix approximation (ETMA) can overcome the serious problem known in the ordinary (non-self-consistent) $T$-matrix approximation that it unphysically gives double-valued superfluid phase transition temperature $T_{\rm c}$ in the presence of mass imbalance. However, at the same time, the ETMA was also found to give the vanishing $T_{\rm c}$ in the weak-coupling and highly mass-imbalanced case. In this paper, we inspect the correctness of this ETMA result, using the self-consistent $T$-matrix approximation (SCTMA). We show that the vanishing $T_{\rm c}$ is an artifact of the ETMA, coming from an internal inconsistency of this theory. The superfluid phase transition actually always occurs, irrespective of the ratio of mass imbalance. We also apply the SCTMA to the pseudogap problem in a mass-imbalanced Fermi gas. We show that pairing fluctuations induce different pseudogap phenomena between the the light component and heavy component. We also point out that a $^6$Li-$^{40}$K mixture is a useful system for the realization of a hetero pairing state, as well as for the study of component-dependent pseudogap phenomena.
description: 27 pages, 14 figures
Morphometric aspects of ciliary distribution and ciliogenesis in human nasal epithelium.
Creators: name: Carson, J. L.
name: Rose, J. G.
name: Boucher, R. C.
name: Collier, A. M.
name: Knowles, M. R.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1981

description: Observations of freeze-fracture preparations of human nasal epithelium have provided a unique perspective of the spatial distribution of epithelial cell cilia unattainable by more conventional ultrastructural techniques. The initial stages of ciliogenesis were characterized ultrastructurally in these preparations by differentiation of the lumenal aspect of the epithelial cell membrane prior to the emergence and maturation of new cilia. Morphometric analyses of the resultant electron micrographs indicate that the development of an optimal ciliary population during differentiation of ciliated cells may be integral to the adequate functioning of respiratory mucociliary mechanisms. The frequency with which such ciliogenic structures are observed indicates that ciliogenesis is a common feature of the nasal epithelium and suggests that epithelial cell turnover in the nasal cavities is relatively rapid.
Chinese Scholarly Interest in the Pacific
Creators: name: Zhang, Denghua
Publisher: name: Canberra, ACT: Dept. of Pacific Affairs, Coral Bell School of Asia Pacific Affairs, The Australian National University
Year: 2021

description: This In Brief examines the level of Chinese scholarly interest in Pacific Island countries (PICs), presents the main research themes explored by Chinese scholars and describes the policy-driven nature of the research conducted. It draws upon an analysis of 129 journal articles published by China-based Chinese scholars of Pacific studies between 2006 and 2019, as well as interviews with 44 of these authors. This research aims to enrich the literature on Pacific research in China, increase our knowledge of China’s growing presence in the region through the eyes of Chinese scholars and offer a useful lens through which to assess the influence of Chinese policy on such research.
title: Η τηλεργασία κατά την περίοδο της Πανδημίας στην ελληνική δημόσια διοίκηση
title: Teleworking in the Greek public administration during the pandemic
Creators: name: Σπυριδακη Πανδωρα
Publisher: name: Technical University of Crete
Year: 2024

description: Κατά τη διάρκεια της Πανδημίας στην Ελλάδα, υπήρξε η ανάγκη για τον δημόσιο τομέα να χρησιμοποιήσει σε μεγάλο βαθμό την τηλεργασία ως μέσο για την επίτευξη και ολοκλήρωση των εργασιών που απαιτούνται σε καθημερινή βάση από τους διάφορους φορείς για την ομαλή και εύρυθμη λειτουργία των υπηρεσιών του. Η παρούσα μεταπτυχιακή εργασία αφορά την έρευνα για τη χρήση της τηλεργασίας στη Δημόσια Διοίκηση και συγκεκριμένα στα Πανεπιστημιακά Ιδρύματα της Κρήτης (Ελληνικό Μεσογειακό Πανεπιστήμιο, Πανεπιστήμιο Κρήτης, Πολυτεχνείο Κρήτης) κατά την περίοδο της πανδημίας Covid-19, και τις συνθήκες που δημιουργήθηκαν σε αυτό το πλαίσιο. Στόχος της εργασίας είναι να αναλυθεί το μοντέλο της τηλεργασίας τόσο ως προς τα πλεονεκτήματα όσο και ως προς τα μειονεκτήματα που μπορεί να περιέχει,  την απόδοση των εργαζομένων εκείνο το διάστημα, καθώς και τη χρήση της τηλεργασίας μετά το τέλος της πανδημίας. Για την άντληση των πληροφοριών χρησιμοποιήθηκαν ερωτηματολόγια προς τους εργαζόμενους στα ΑΕΙ της Κρήτης που έκαναν χρήση της τηλεργασίας.
title: Theaterspiele : La perspective actionnelle et le théâtre au service du traitement du texte littéraire en langue étrangère
title: Theaterspiele : La perspective actionnelle et le théâtre au service du traitement du texte littéraire en langue étrangère
titleType: AlternativeTitle
Creators: name: Portioli, Eugenia
Publisher: name: Unknown
Year: 0
Subjects: subject: Théâtre
subject: littérature
subject: allemand
subject: didactique
subject: perspective actionnelle
subject: agir littéraire

description: Comment motiver les élèves à étudier la langue allemande ? Est-il envisageable de les initier aux grands classiques de la littérature ? Quelles activités favorisent la production en langue étrangère et quelles activités s’avèrent inefficaces ? Sans répondre à ces questions dans leur généralité, nous avons choisi, dans la présente étude, de les aborder sous l’angle particulier de la pratique du théâtre et de la perspective actionnelle en didactique des langues et cultures étrangères. Durant un semestre, 32 élèves ont travaillé à la réalisation d’un spectacle théâtral, à partir du texte de Bertolt Brecht Die Dreigroschenoper. Nous présentons la séquence didactique conçue pour réaliser le projet, les activités qui ont été mises en œuvre et interrogeons leur efficacité. Pour ce faire, une enquête a été menée. Elle s’est constituée de deux moments d’analyse, chacun construit à partir de deux phases d’observation duale (interne et externe), de deux points de vue différents (des enseignantes et des élèves). Dans un premier temps, ce travail présente les résultats d’une analyse qualitative du point de vue interne de l’enseignante, autrice de ce travail, et des élèves, auteur·trice·s d’un journal de bord, qui les a accompagné·e·s tout au long du projet. Dans un deuxième temps, ce travail présente l’analyse des notes attribuées aux élèves lors du spectacle final et des réponses à trois sondages soumis aux élèves.