cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Development of RP-HPLC Method for Simultaneous Estimation of Atrovastatin and Ezetimibe in Pharmaceutical Formulation
Creators: name: S. Alexandar
Publisher: name: Zenodo
Year: 2021
Subjects: HPLC
atrovastatin
ezetimibe
simultaneous estimation

description: A simple, selective, rapid, precise, and cost-effective reverse phase HPLC method for simultaneous estimation of Atrovastatin and Ezetimibe from pharmaceutical dosage forms has been developed. The method was carried out on a Phenomenex C18 (25 cm x 4.6 mm i.d., 5 µ) column with a mobile phase consisting of Water and 0.4% (v/v) TEA: Acetonitrile (adjusted to pH 6.5 using Orthophosphoric acid) (60:40 v/v) at a flow rate of 1 ml/min. The detection was carried out at a wavelength of 248 nm. As an internal control, pioglitazone was used. Atrovastatin, Ezetimibe, and Pioglitazone, respectively, had retention times of 3.42, 6.90, and 4.28 minutes.The accuracy, precision, linearity, limit of detection, limit of quantitation, and solution stability of the established method have all been validated. The suggested method can be used to estimate the dosage forms of these drugs in combination dosage forms. The current RP-HPLC system can be used to check the quality of raw materials, formulations, and dissolution tests.
Gamma Ray Bursts from Stellar Collisions
Creators: name: Hansen, Brad M. S.
name: Murali, Chigurupati
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose that the cosmological gamma ray bursts arise from the collapse of neutron stars to black holes triggered by collisions or mergers with main sequence stars. This scenario represents a cosmological history qualitatively different from most previous theories because it contains a significant contribution from an old stellar population, namely the globular clusters. Furthermore, the gas poor central regions of globular clusters provide an ideal environment for the generation of the recently confirmed afterglows via the fireball scenario. Collisions resulting from neutron star birth kicks in close binaries may also contribute to the overall rate and should lead to associations between some gamma ray bursts and supernovae of type Ib/c.
description: Latex, 15 pages, and 2 postscript figures. submitted to ApJ Letters
title: Παιδιά και έφηβοι στην Ελλάδα της κρίσης
title: Ιατροκοινωνική Φροντίδα
titleType: AlternativeTitle
Creators: name: Petridou, Eleni
name: Emporiadou, Maria
name: Chrousos, Georgios
name: Mpakopoulou, Flora
Publisher: name: Kallipos, Open Academic Editions
Year: 2016
Subjects: ΠΡΟΛΗΨΗ
ΠΕΡΙΓΕΝΝΗΤΙΚΗ ΦΡΟΝΤΙΔΑ
ΠΑΡΟΧΕΣ ΥΓΕΙΑΣ
ΕΦΗΒΙΑΤΡΙΚΗ
ΠΑΙΔΙΑΤΡΙΚΑ ΧΡΟΝΙΑ ΝΟΣΗΜΑΤΑ
ΠΡΟΓΡΑΜΜΑΤΙΣΜΟΣ ΥΓΕΙΑΣ
ΚΑΛΕΣ ΠΡΑΚΤΙΚΕΣ ΙΑΤΡΙΚΗΣ ΦΡΟΝΤΙΔΑΣ
ΟΙΚΟΝΟΜΙΚΗ ΚΡΙΣΗ
Perinatal Care
Health Practices
Screening
Disease Prevention
Adolescent Medicine
Chronic Disease Childcare
Medical Care Good Practices
Economy Crisis
Health Policy

description: Νόμοι & διεθνείς συμβάσεις που συνυπογράφει η χώρα μας καθορίζουν τα δικαιώματα στην υγεία του ευάλωτου πληθυσμού των παιδιών/εφήβων. Ωστόσο, σε περιόδους κρίσης, χρειάζεται περιχαράκωση των υγειονομικών επιτευγμάτων, στοχοθεσία, επαναπροσανατολισμός των δράσεων διεπιστημονικής συνεργασίας για πιο ανταποδοτική αξιοποίηση των υφιστάμενων πόρων & στενή παρακολούθηση της επίτευξης των πλάνων.
Το βοήθημα «Παιδιά & Έφηβοι στα χρόνια της κρίσης: ιατροκοινωνική φροντίδα» εκπηγάζει από την αντίστοιχη Λευκή Βίβλο Κοινωνικής Παιδιατρικής (socped.gr) & το στρατηγικό σχέδιο συντονισμένων δράσεων ενός τομέα που απορροφά σημαντικό μέρος του προϋπολογισμού υγείας. Βασισμένο σε σύγχρονες παιδαγωγικές μεθόδους, με δυνατότητες ετήσιας επικαιροποίησης περιεχομένου, το βοήθημα στοχεύει στην κάλυψη εκπαιδευτικού κενού του προγράμματος Σχολών Επαγγελμάτων Υγείας σε:
α. καλές πρακτικές στις διαδικασίες διατήρησης της παρεχόμενης ποιοτικής φροντίδας,
β. συμμετοχή στην ανάπτυξη υγειονομικών δεικτών,
γ. εξοικείωση με αιτίες υπο/υπερδιάγνωσης & υπο/υπερθεραπείας χρόνιων νοσημάτων με επιπτώσεις στο κόστος των υπηρεσιών & την ποιότητα ζωής πασχόντων/οικογενειών &
δ. οφέλη από τη συμμετοχή στην ολιστική αντιμετώπισης των πασχόντων & διασύνδεση των υπηρεσιών υγείας.
Με μεθοδολογία ανάπτυξης ομοφωνίας Ελλήνων ειδικών επιχειρείται να καλυφθούν τρέχουσες ελλείψεις σε δείκτες υγείας/καταγραφές υγειονομικών υπηρεσιών & να αναδυθούν αδύνατοι κρίκοι στη διαγνωστική, θεραπευτική & υποστηρικτική προσπέλαση.
Η διεξοδική κάλυψη της θεματολογίας επιχειρείται στα κύρια κεφάλαια: Περιγεννητική Φροντίδα, Φροντίδα Παιδιών/Εφήβων με Χρόνια Προβλήματα Υγείας/Ειδικές Ανάγκες & Εφηβιατρική Φροντίδα.
Απαρίθμηση των επιδιωκόμενων εκπαιδευτικών στόχων, ανάπτυξη περιεχομένου, σύνοψη, διαδικτυακές δραστηριότητες εμπέδωσης γνώσεων & βιβλιογραφικές πηγές υπάρχουν στα επιμέρους υποκεφάλαια, που καλύπτουν το φάσμα της παροχής ιατροκοινωνικών υπηρεσιών & αναγκών εκπαίδευσης πασχόντων & εμπλεκομένων επαγγελματιών
Additional file 3: of A reverse metabolic approach to weaning: in silico identification of immune-beneficial infant gut bacteria, mining their metabolism for prebiotic feeds and sourcing these feeds in the natural product space
Creators: name: Michelini, Samanta
name: Biju Balakrishnan
name: Parolo, Silvia
name: Matone, Alice
name: Mullaney, Jane
name: Young, Wayne
name: Gasser, Olivier
name: Wall, Clare
name: Priami, Corrado
name: Lombardo, Rosario
name: Kussmann, Martin
Publisher: name: figshare
Year: 2018
Subjects: subject: Biochemistry
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Marine Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Table S1. Example of relevant sentences from the pipeline for selected microbes. Supplemental Information 1 List of metabolites in each metabolite category. Supplemental Information 2 Description and motivation for â Baby Foodâ category. Supplemental Information 3 Literature queries for each topic. Supplemental Information 4 List of terms in each dictionaries. Supplemental Information 5 List of manually filtered foods, which excludes processed foods, alcohol and those foods that do not contain clearly defined products. Figure S1 Metabolic enrichment set analysis description. (PDF 1050 kb)
Hybrid Planning and Control for Multiple Fixed-Wing Aircraft under Input Constraints
Creators: name: Garg, Kunal
name: Panagou, Dimitra
Publisher: name: arXiv
Year: 2018
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents a novel hybrid control protocol for de-conflicting multiple vehicles with constraints on control inputs. We consider turning rate and linear speed constraints to represent fixed-wing or car-like vehicles. A set of state-feedback controllers along with a state-dependent switching logic are synthesized in a hybrid system to generate collision-free trajectories that converge to the desired destinations of the vehicles. The switching law is designed so that the safety can be guaranteed while no Zeno behavior can occur. A novel temporary goal assignment technique is also designed to guarantee convergence. We analyze the individual modes for safety and the closed-loop hybrid system for convergence. The theoretical developments are demonstrated via simulation results.
description: Best Student Paper Finalist, AIAA-SciTech GNC Conference, 2019
Reminiscences of Walter H. Judd, 1970
Publisher: name: Columbia University
Year: 2020
Subjects: Missionaries
Legislators--United States
Missions--China
International cooperation

description: Personal background, religion; University of Nebraska, 1916, Medical School, 1919; missionary doctor in China, 1925-31, 1934-38; lecturing against Communism, 1938-40; Congressman from Minnesota, 1943; Chiang Kai-shek and Nationalist government; Marshall Plan; nomination of Dwight D. Eisenhower; Geneva Conference, 1955; State Department; United States foreign policy. Impressions of John Foster Dulles, Richard Nixon, John F. Kennedy
Rosa spinosissima var. pimpinellifolia Linnaeus 1753
Creators: name: Jarvis, Charlie
Publisher: name: Linnaean Society of London in association with the Natural History Museum
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rosa
Rosa spinosissima
Rosa spinosissima l. var. pimpinellifolia (l.) hook.

description: Rosa pimpinellifolia Linnaeus, Systema Naturae, ed. 10, 2: 1062. 1759.
["Habitat forte in Europa."] Sp. Pl., ed. 2, 1: 703 (1762). RCN: 3735.
Lectotype (Zieliński in Rechinger, Fl. Iranica 152: 11. 1982): Herb. Linn. No. 652.12 (LINN).
Current name: Rosa spinosissima L. var. pimpinellifolia (L.) Hook. f. (Rosaceae).
Note: Zieliński’s type choice is clear and has priority but Heath (in Calyx 2: 51; 81. 1992) incorrectly treated a cited Dillenian figure as the holotype.
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part R), pp. 785-805 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 799, DOI: 10.5281/zenodo.291971
Anomaly and global inconsistency matching: $θ$-angles, $SU(3)/U(1)^2$ nonlinear sigma model, $SU(3)$ chains and its generalizations
Creators: name: Tanizaki, Yuya
name: Sulejmanpasic, Tin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the $SU(3)/[U(1)\times U(1)]$ nonlinear sigma model in 1+1D and, more broadly, its linearized counterparts. Such theories can be expressed as $U(1)\times U(1)$ gauge theories and therefore allow for two topological $θ$-angles. These models provide a field theoretic description of the $SU(3)$ chains. We show that, for particular values of $θ$-angles, a global symmetry group of such systems has a 't Hooft anomaly, which manifests itself as an inability to gauge the global symmetry group. By applying anomaly matching, the ground-state properties can be severely constrained. The anomaly matching is an avatar of the Lieb-Schultz-Mattis (LSM) theorem for the spin chain from which the field theory descends, and it forbids a trivially gapped ground state for particular $θ$-angles. We generalize the statement of the LSM theorem and show that 't Hooft anomalies persist even under perturbations which break the spin-symmetry down to the discrete subgroup $\mathbb Z_3\times\mathbb Z_3\subset SU(3)/\mathbb Z_3$. In addition the model can further be constrained by applying global inconsistency matching, which indicates the presence of a phase transition between different regions of $θ$-angles. We use these constraints to give possible scenarios of the phase diagram. We also argue that at the special points of the phase diagram the anomalies are matched by the $SU(3)$ Wess-Zumino-Witten model. We generalize the discussion to the $SU(N)/U(1)^{N-1}$ nonlinear sigma models as well as the 't Hooft anomaly of the $SU(N)$ Wess-Zumino-Witten model, and show that they match. Finally the $(2+1)$-dimensional extension is considered briefly, and we show that it has various 't Hooft anomalies leading to nontrivial consequences.
description: 28 pages, 3 figures;(v2) Sec.VB added, Fig.2 updated, refs updated
Novel approaches to the assessment of patients with chest systoms in the acute medical and outpatient settings: the use of multislice computed tomography
Creators: name: Patterson, Caroline
Publisher: name: Imperial College London
Year: 2015

description: This thesis evaluated the clinical utility of cardiopulmonary computed tomography (CT) in patients presenting with chest pain and dyspnoea. Studies within this thesis confirmed the following. Firstly, there is a requirement for improved diagnostic pathways to minimise patients being discharged without a diagnosis, which currently occurs in 30-40% of patients admitted with chest pain and dyspnoea. Historically, CT has been utilised in 32% of admissions with chest pain and 10% of admissions with dyspnoea. Secondly, challenges exist to the wider adoption of cardiopulmonary CT. These include patient-related factors, institutional capabilities and guideline restrictions. In acute admissions, 11% of patients with dyspnoea and 7% of patients with chest pain and a low to moderate likelihood of CAD are suitable for CT. In the RACPC setting, including patients across the entire spectrum of CAD likelihood, 18% of patients are suitable for CT. NICE CG95 would recommend only 1% of acute chest pain admissions and 2% of RACPC attenders for CT. Thirdly, NICE CG95 would recommend 51% of acute chest pain admissions and 66% of RACPC attenders for discharge without cardiac investigation. In the RACPC population, significant CAD is identified in 10% of these patients and a major adverse cardiac event in 2%. Fourthly, in selected patients with suspected cardiac chest pain, cardiac CT has a diagnostic yield of 21% in acute admissions and 13% in RACPC attenders for significant CAD. In acute admissions with dyspnoea, cardiopulmonary CT has a diagnostic yield of 20% for CAD, 20% for pulmonary embolism, nil for aortic dissection and 89% for non-vascular chest pathology. Fifthly, inclusion of CT in diagnostic pathways for chest pain result in fewer patients discharged without a diagnosis, fewer invasive angiography procedures and reduced diagnostic costs. In patients with dyspnoea, CT provides value to clinicians making diagnoses and supports early discharge without detrimental outcomes.
The Clustering of High Redshift Galaxies in the Cold Dark Matter Scenario
Creators: name: Katz, Neal
name: Hernquist, Lars
name: Weinberg, David H.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the clustering of high redshift galaxies in five variants of the cold dark matter (CDM) scenario, using hydrodynamic cosmological simulations that resolve the formation of systems with circular velocities $v_c \geq 100 \kms$ ($Ω=1$) or $v_c \geq 70 \kms$ ($Ω=0.4$). Although the five models differ in their cosmological parameters and in the shapes and amplitudes of their mass power spectra, they predict remarkably similar galaxy clustering at $z=2$, 3, and 4. The galaxy correlation functions show almost no evolution over this redshift range, even though the mass correlation functions grow steadily in time. Despite the fairly low circular velocity threshold of the simulations, the high redshift galaxies are usually highly biased tracers of the underlying mass distribution; the bias factor evolves with redshift and varies from model to model. Predicted correlation lengths for the resolved galaxy population are $2-3\hmpc$ (comoving) at $z=3$. More massive galaxies tend to be more strongly clustered. These CDM models have no difficulty in explaining the strong observed clustering of Lyman-break galaxies, and some may even predict excessive clustering. Because the effects of bias obscure differences in mass clustering, it appears that Lyman-break galaxy clustering will not be a good test of cosmological models but will instead provide a tool for constraining the physics of galaxy formation.
description: 33 pages, 10 figures, AAS LaTeX (aaspp4.sty), submitted to ApJ
Exploring Adversarial Examples: Patterns of One-Pixel Attacks
Creators: name: Kügler, David
name: Distergoft, Alexander
name: Kuijper, Arjan
name: Mukhopadhyay, Anirban
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Failure cases of black-box deep learning, e.g. adversarial examples, might have severe consequences in healthcare. Yet such failures are mostly studied in the context of real-world images with calibrated attacks. To demystify the adversarial examples, rigorous studies need to be designed. Unfortunately, complexity of the medical images hinders such study design directly from the medical images. We hypothesize that adversarial examples might result from the incorrect mapping of image space to the low dimensional generation manifold by deep networks. To test the hypothesis, we simplify a complex medical problem namely pose estimation of surgical tools into its barest form. An analytical decision boundary and exhaustive search of the one-pixel attack across multiple image dimensions let us localize the regions of frequent successful one-pixel attacks at the image space.
description: Figure 4 corrected from published Version to correct y-axis labels
Observation of the $χ_\mathrm{b1}$(3P) and $χ_\mathrm{b2}$(3P) and measurement of their masses
Creators: name: CMS Collaboration
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The $χ_\mathrm{b1}$(3P) and $χ_\mathrm{b2}$(3P) states are observed through their $Υ$(3S) $γ$ decays, using an event sample of proton-proton collisions collected by the CMS experiment at the CERN LHC. The data were collected at a center-of-mass energy of 13 TeV and correspond to an integrated luminosity of 80.0 fb$^{-1}$. The $Υ$(3S) mesons are identified through their dimuon decay channel, while the low-energy photons are detected after converting to e$^+$e$^-$ pairs in the silicon tracker, leading to a $χ_\mathrm{b}$(3P) mass resolution of 2.2 MeV. This is the first time that the $J =$ 1 and 2 states are well resolved and their masses individually measured: 10$\,$513.42 $\pm$ 0.41 (stat) $\pm$ 0.18 (syst) MeV and 10$\,$524.02 $\pm$ 0.57 (stat) $\pm$ 0.18 (syst) MeV; they are determined with respect to the world-average value of the $Υ$(3S) mass, which has an uncertainty of 0.5 MeV. The mass splitting is measured to be 10.60 $\pm$ 0.64 (stat) $\pm$ 0.17 (syst) MeV.
description: Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/BPH-17-008 (CMS Public Pages)
Using fMRI to investigate speech-stream segregation and auditory attention in healthy adults and patients with memory complaints
Creators: name: Kamourieh, Salwa
Publisher: name: Imperial College London
Year: 2015

description: Poor memory for recent conversations is the commonest presenting symptom in patients attending a cognitive neurology clinic. They also frequently have greater difficulty following and remembering conversations in the presence of background noise and/or unattended speech. While the ability to participate in and recall conversations depends on several cognitive functions (language-processing, attention, episodic and working memory), without the ability to perform auditory scene analysis, and more specifically speech-stream segregation, recall of verbal information will be impaired as a consequence of poor initial registration, over and above impaired encoding and subsequent retrieval. This thesis investigated auditory attention and speech-stream segregation in healthy participants (‘controls’) and patients presenting with ‘poor memory’, particularly a complaint of difficulty remembering recent verbal information. Although this resulted in the recruitment of many patients with possible or probable Alzheimer’s disease, it also included patients with mild cognitive impairment (MCI) of uncertain aetiology and a few with depression. Functional MRI data revealed brain activity involved in attention, working memory and speech-stream segregation as participants attended to a speaker in the absence and presence of background speech. The study on controls demonstrated that the right anterior insula, adjacent frontal operculum, left planum temporale and precuneus were more active when the attended speaker was partially masked by unattended speech. Analyses also revealed a central role for a right hemisphere system for successful attentive listening, a system that was not modulated by administration of a central cholinesterase inhibitor. Therefore, this study identified non-auditory higher-order regions in speech-stream segregation, and the demands on a right hemisphere system during attentive listening. Administration of a central cholinesterase inhibitor did not identify any benefit in the present patient group. However, my research has identified systems that might be therapeutic targets when attempting to modulate auditory attention and speech-stream segregation in patients with neurodegenerative disease.
title: Μηχανισμοί οργανικών αντιδράσεων
Creators: name: Koumpis, Alexandros
name: Fylaktakidou, Konstantina
Publisher: name: Kallipos, Open Academic Editions
Year: 2016
Subjects: ΟΡΓΑΝΙΚΕΣ ΑΝΤΙΔΡΑΣΕΙΣ
ΑΠΟΣΠΑΣΗ
ΑΝΤΙΔΡΑΣΕΙΣ ΡΙΖΩΝ
ΑΝΤΙΔΡΑΣΕΙΣ ΠΡΟΣΘΗΚΗΣ
ΠΕΡΙΚΥΚΛΙΚΕΣ ΑΝΤΙΔΡΑΣΕΙΣ
ΥΠΟΚΑΤΑΣΤΑΣΗ
ΑΝΤΙΔΡΑΣΕΙΣ ΕΝΟΛΙΚΩΝ ΑΝΙΟΝΤΩΝ
ΟΞΕΙΔΩΣΕΙΣ
ΑΝΑΓΩΓΕΣ
ΑΝΑΔΙΑΤΑΞΕΙΣ
ΑΝΤΙΔΡΑΣΕΙΣ ΣΥΖΕΥΞΗΣ
ΟΛΕΦΙΝΙΚΗ ΜΕΤΑΘΕΣΗ
Organic Reactions
Substitution
Elimination
Radical Reactions
Addition Reactions
Pericyclic Reactions
Reactions Of Enolates
Oxidations
Reductions
Rearrangements
Cross-coupling Reactions
Olefin Metathesis

description: Το βιβλίο αυτό απευθύνεται τόσο σε προπτυχιακούς όσο και σε μεταπτυχιακούς φοιτητές που διδάσκονται το μάθημα της Οργανικής Χημείας ή περισσότερο εξειδικευμένα μαθήματα που αφορούν σε Μηχανισμούς Οργανικών Αντιδράσεων. Μπορεί να χρησιμοποιηθεί από αναγνώστες εξοικειωμένους με τις βασικές έννοιες της Οργανικής Χημείας. Με τη βοήθεια αυτού του συγγράματος οι αναγνώστες θα είναι σε θέση να κατανοήσουν τους βασικότερους μηχανισμούς που διέπουν τις οργανικές αντιδράσεις, δηλαδή:

- Αντιδράσεις υποκατάστασης και απόσπασης σε αλειφατικά συστήματα
- Αντιδράσεις προσθήκης σε διπλούς δεσμούς (C=C και C=O)
- Αντιδράσεις ενολών και ενολικών ανιόντων
- Αντιδράσεις υποκατάστασης σε αρωματικά συστήματα
- Αντιδράσεις που χωρούν μέσω ομολυτικών μηχανισμών (αντιδράσεις ριζών)
- Περικυκλικές αντιδράσεις (κυκλοπροσθήκες, ηλεκτροκυκλικές και μεταθέσεις)
- Αντιδράσεις οξείωσης και αναγωγής
- Αντιδράσεις σύζευξης
- Αντιδράσεις ολεφινικής μετάθεσης

Επιδιωκόμενοι στόχοι για τον αναγνώστη είναι:

- Ο εμπλουτισμός των γνώσεών του και η εκμάθηση των κυριότερων οργανικών αντιδράσεων από μηχανιστική σκοπιά
- Η ικανότητα αναγνώρισης των μηχανιστικών χαρακτηριστικών μιας δοθείσας οργανικής αντίδρασης
- Η ικανότητα πρόβλεψης της έκβασης μιας οργανικής αντίδρασης

Για την ευκολότερη αφομοίωση του υλικού του συγγράματος αυτό είναι εμπλουτισμένο με ασκήσεις (αυτοαξιολόγησης και γενικές) καθώς και διαδραστικά στοιχεία.
Structural and morphological aspects of templated non-planar phthalocyanines
Creators: name: Ramadan, Alexandra
Publisher: name: Imperial College London
Year: 2015

description: Metal phthalocyanines prepared as single crystals and thin films have been analysed using a combination of microscopy and diffraction based characterisation. Vanadyl phthalocyanine (VOPc) and chloroaluminium phthalocyanine (ClAlPc) prepared as thin films on oxidised silicon at a variety of substrate temperatures are analysed by atomic force microscopy (AFM) and x-ray diffraction (XRD). Elevated substrate temperatures are found to promote larger morphological features and out-of-plane diffraction. In addition single crystals of VOPc are grown and the single crystal structure is re-determined. Thin films of copper iodide (CuI) are prepared, at a variety of substrate temperatures, and analysed using AFM and XRD. These films are found to be (111) oriented and are used as structural templating layers for sequential growth of VOPc and ClAlPc thin films. These structural templates are found to alter the structure of thin films of VOPc and ClAlP. VOPc is shown to adopt three distinct molecular orientations whereas ClAlPc is found to adopt only one. In addition to this the growth behaviours of VOPc and ClAlPc on thin films of CuI is explored using AFM and different growth modes are suggested. Single crystals of CuI are synthesised from solution for use as a model structural templating system and characterised using low energy electron diffraction (LEED), AFM and XRD. These crystals were oriented to their (111) face and subsequently used as a model template for the growth of VOPc. The films of VOPc are analysed using XRD and AFM and the (111) surface is found to promote one orientation of VOPc, suggesting that the molecules interact differently with a single crystal surface than with a polycrystalline thin film. Zn- and O-terminated (0001) Zinc Oxide (ZnO) crystals are prepared and used to investigate the effects of surface chemical termination on the growth of VOPc thin films. The ZnO surfaces are analysed using LEED, XRD and AFM and are found to adopt different surface reconstructions under identical preparation conditions. These surface reconstructions result in VOPc films which have different structures and morphologies.
A New Analysis of RR Lyrae Kinematics in the Solar Neighborhood
Creators: name: Martin, John C.
name: Morrison, Heather L.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Full space velocities are computed for a sample of 130 nearby RR Lyrae variables using both ground-based and Hipparcos proper motions. In many cases proper motions from multiple sources have been averaged to produce a significant improvement in the transverse space velocity errors. In most cases, this exceeds the accuracy of Hipparcos proper motions alone. The velocity ellipsoids computed for halo and thick disk samples are in agreement with previous studies. No distinct sample of thin disk RR Lyraes has been isolated but there is kinematic evidence for some thin disk stars in our thick disk samples. A sample of 21 stars with [Fe/H] < -1.0 and disk-like kinematics have been isolated. It is concluded from their kinematics and spatial distribution that these stars represent a sample of RR Lyraes in the metal weak tail of the thick disk. In the halo samples the distribution of V velocities is not gaussian, even when the metal weak thick disk stars are removed. Also, a plot of U and W velocities as a function of V velocity for the kinematically unbiased halo sample shows some curious structure. The cause of these kinematic anomalies is not clear. In addition, systematic changes to the distance scale within the range of currently accepted values of Mv(RR) are shown to significantly change the calculated halo kinematics. Fainter values of Mv(RR), such as those obtained by statistical parallax (~ 0.60 to 0.70 at [Fe/H]=-1.9), result in local halo kinematics similar to those reported in independent studies of halo kinematics, while brighter values of Mv(RR), such as those obtained through recent analysis of Hipparcos subdwarf parallaxes (~ 0.30 to 0.40 at [Fe/H]=-1.9), result in a halo with retrograde rotation and significantly enlarged velocity dispersions.
description: 40 pages (including tables), 7 PostScript figures, accepted for publication in the Astronomical Journal
Efficient operation of recharging infrastructure for the accommodation of electric vehicles: a demand driven approach
Creators: name: Latinopoulos, Charilaos
Publisher: name: Imperial College London
Year: 2015

description: Large deployment and adoption of electric vehicles in the forthcoming years can have significant environmental impact, like mitigation of climate change and reduction of traffic-induced air pollutants. At the same time, it can strain power network operations, demanding effective load management strategies to deal with induced charging demand. One of the biggest challenges is the complexity that electric vehicle (EV) recharging adds to the power system and the inability of the existing grid to cope with the extra burden. Charging coordination should provide individual EV drivers with their requested energy amount and at the same time, it should optimise the allocation of charging events in order to avoid disruptions at the electricity distribution level. This problem could be solved with the introduction of an intermediate agent, known as the aggregator or the charging service provider (CSP). Considering out-of-home charging infrastructure, an additional role for the CSP would be to maximise revenue for parking operators. This thesis contributes to the wider literature of electro-mobility and its effects on power networks with the introduction of a choice-based revenue management method. This approach explicitly treats charging demand since it allows the integration of a decentralised control method with a discrete choice model that captures the preferences of EV drivers. The sensitivities to the joint charging/parking attributes that characterise the demand side have been estimated with EV-PLACE, an online administered stated preference survey. The choice-modelling framework assesses simultaneously out-of-home charging behaviour with scheduling and parking decisions. Also, survey participants are presented with objective probabilities for fluctuations in future prices so that their response to dynamic pricing is investigated. Empirical estimates provide insights into the value that individuals place to the various attributes of the services that are offered by the CSP. The optimisation of operations for recharging infrastructure is evaluated with SOCSim, a micro-simulation framework that is based on activity patterns of London residents. Sensitivity analyses are performed to examine the structural properties of the model and its benefits compared to an uncontrolled scenario are highlighted. The application proposed in this research is practice-ready and recommendations are given to CSPs for its full-scale implementation.
Reminiscences of Walter Johnson, 1976
Publisher: name: Columbia University
Year: 2021
Subjects: Historians
Historiography

description: Family background; Massachusetts childhood; Dartmouth; association with Adlai E. Stevenson: 1948 gubernatorial campaign, 1952 draft, 1953 world trip, and 1956 campaign; editing Stevenson papers; Yalta project with Edward Stettinius; Joseph C. Grew project; race for Chicago alderman, 1943; establishment of Independent Voters of Illinois
Analysing directed network data
Creators: name: Sarajlic, Anida
Publisher: name: Imperial College London
Year: 2015

description: The topology of undirected biological networks, such as protein-protein interaction networks, or genetic interaction networks, has been extensively explored in search of new biological knowledge. Graphlets, small connected non-isomorphic induced sub-graphs of an undirected network, have been particularly useful in computational network biology. Having in mind that a significant portion of biological networks, such as metabolic networks or transcriptional regulatory networks, are directed by nature, we define all up to four node directed graphlets and orbits and implement the directed graphlet and graphlet orbits counting algorithm. We generalise all existing graphlet based measures to the directed case, defining: relative directed graphlet frequency distance, directed graphlet degree distribution similarity, directed graphlet degree vector similarity, and directed graphlet correlation distance. We apply new topological measures to metabolic networks and show that the topology of directed biological networks is correlated with biological function. Finally, we look for topology–function relationships in metabolic networks that are conserved across different species.
Are Unidentified EUV Sources the Closest Neutron Stars?
Creators: name: Shemi, Amotz
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Unidentified extreme UV sources, detected in the {\it EUVE} and {\it ROSAT} WFC all-sky surveys, could be isolated old neutron stars, accreting material from the ISM. The closest neutron stars, that are located in the local ISM bubble of unusually low density, are faint and cool ($L \sim 10^{27} {\rm \ erg \ s^{-1}}$, $T \sles 6 $eV). The extreme UV spectrum of these sources is very sensitive to the H I column density, since large fraction of the emission is emitted just below the hydrogen Lyman edge. The {\it EUVE} sources with large count rate in the long-wave bandpass (600Å) seem to be the most promising candidates. These sources should have low H I column density ($N_{HI} \sles 10^{18} {\rm \ cm^{-2}}$), constraining their distance to a few tens of parsec. Otherwise, their spectra would be significantly modified by ISM absorption, inevitably become stronger in the short wavelength (100Å, 200Å) {\it EUVE} bandpasses. If these unidentified objects are familiar EUV sources rather than neutron stars, either white dwarfs, late type stars or cataclysmic variables, they are expected to be identifiable, generally brighter than $\sim 14$.
description: 4 pages, compressed and uuencoded postscript-file, submitted to MNRAS
The role of complement iC3b in dense deposit disease
Creators: name: Barbour, Thomas David
Publisher: name: Imperial College London
Year: 2015

description: Dense deposit disease (DDD) is a rare, progressive and incurable kidney disease characterized by complement C3 accumulation along the glomerular basement membrane (GBM). It is the prototypical form of C3 glomerulopathy, which comprises renal disorders due to excessive C3 activation via the alternative pathway (AP). Human and murine studies indicate that renal inflammation in DDD is initiated by the specific C3 activation product iC3b. I have assessed the role of iC3b in DDD using the uniquely informative experimental model of C3 glomerulopathy in factor H (FH)-deficient mice. I demonstrate that coexisting deficiency of CD11b, the specific leukocyte receptor for iC3b, exacerbates the spontaneous renal phenotype in FH-deficient mice. This suggests that the iC3b-CD11b interaction may mediate partial renal protection in DDD. I also show that CD11b deficiency produces hypersensitivity to experimentally triggered glomerular injury in both FH-deficient and FH-sufficient mice. My second experimental approach in vivo and in vitro was to assess whether C3 activation in the circulation or on the GBM surface is the predominant cause of iC3b accumulation in DDD. This included experiments in which administration of a novel engineered human FH protein fragment reduced glomerular C3 staining in FH-deficient mice.
Chiral Magnetic Skyrmions with Arbitrary Topological Charge ("skyrmionic sacks")
Creators: name: Rybakov, F. N.
name: Kiselev, N. S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We show that continuous and spin-lattice models of chiral ferro- and antiferromagnets provide the existence of an infinite number of stable soliton solutions of any integer topological charge. A detailed description of the morphology of new skyrmions and the corresponding energy dependencies are provided. The considered model is general, and is expected to predict a plethora of particle-like states which may occur in various chiral magnets including atomic layers, e.g., PdFe/Ir(111), rhombohedral GaV$_4$S$_8$ semiconductor, B20-type alloys as Mn$_{1-x}$Fe$_x$Ge, Mn$_{1-x}$Fe$_x$Si, Fe$_{1-x}$Co$_x$Si, Cu$_2$OSeO$_3$, acentric tetragonal Heusler compounds.
title: Βιομηχανική οργανική χημεία
title: ΕΝΕΡΓΕΙΑΚΕΣ ΠΡΩΤΕΣ ΥΛΕΣ-ΧΗΜΙΚΕΣ ΔΙΕΡΓΑΣΙΕΣ
titleType: AlternativeTitle
Creators: name: Achilias, Dimitris
name: Eleftheriadis, Ioannis
name: Nikolaidis, Nikolaos
Publisher: name: Kallipos, Open Academic Editions
Year: 2016
Subjects: ΠΕΤΡΕΛΑΙΟ
ΦΥΣΙΚΟ ΑΕΡΙΟ
ΓΑΙΑΝΘΡΑΚΕΣ
ΕΝΕΡΓΕΙΑ
ΛΙΠΗ ΚΑΙ ΥΔΑΤΑΝΘΡΑΚΕΣ
ΧΗΜΙΚΕΣ ΔΙΕΡΓΑΣΙΕΣ
Oil
Natural Gas
Carbon
Energy
Chemical Processes

description: Η διαθεσιµότητα πρωτογενούς ενέργειας, δηλαδή ενέργειας που αντλείται κατευθείαν από τη φύση (άνθρακας, πετρέλαιο, φυσικό αέριο, κ.α.) αποτελεί σήµερα ίσως το σηµαντικότερο και κρισιµότερο πρόβληµα της ανθρωπότητας, γιατί απ' αυτήν εξαρτάται η επιβίωση και η ανάπτυξή της. Κάθε ανάπτυξη και άνοδος του βιοτικού επιπέδου μιας χώρας συνοδεύεται με ανάλογη αύξηση της ενέργειας που καταναλώνεται. Αντίθετα, το ουσιαστικό κίνητρο πολλών πολέμων είναι η κυριαρχία σε ενεργειακούς πόρους. Αρκεί να σημειωθεί ότι η παγκόσμια κατανάλωση πρωτογενούς ενέργειας τo 2010 ήταν πάνω από 11 δισεκατομμύρια τόνοι ισοδύναμου πετρελαίου, σχεδόν διπλάσια από αυτήν πριν από 30 χρόνια.
Ολοι αυτοί οι ενεργειακοί πόροι (πετρέλαιο, φυσικό αέριο, γαιάνθρακες) αποτελούνται από οργανικές ενώσεις. Επιπλέον, οι διεργασίες οι οποίες συμβαίνουν για παράδειγμα σε ένα διυλιστήριο πετρελαίου είναι βιομηχανική οργανική χημεία.
Στα πλαίσια αυτά προτείνεται αυτό το βιβλίο, όπου στο ευρύτερο θέμα της βιομηχανικής οργανικής χημείας διαπραγματεύεται και όλες τις διεργασίες αξιοποίησης των ορυκτών ενεργειακών πόρων. Στη συνέχεια βεβαια πραγματεύεται και άλλα θέματα όπως τα λίπη και έλαια, υδατάνθρακες και διάφορες χημικές διεργασίες.
Το βιβλίο αυτό πρόκειται να καλύψει τις διδακτικές ανάγκες προπτυχιακών μαθημάτων σε φοιτητές των Τμημάτων Χημείας, Χημικών Μηχανικών, Φυσικής, Μηχανολόγων Μηχανικών, καθώς και Τεχνολόγους διαφόρων ειδικοτήτων, που ασχολούνται με τα ενδιαφέροντα θέματα των συμβατικών ενεργειακών πόρων. Δεδομένο ότι το πεδίο είναι πολύ ευρύ, δεν επιχειρείται μια λεπτομερής παράθεση δεδομένων αλλά μια εισαγωγική μάλλον ενημέρωση σε όλο το φάσμα των καυσίμων και της βιομηχανικής οργανικής χημείας.
Additional file 4: of Comparative analysis of the genetic variability within the Q-type C2H2 zinc-finger transcription factors in the economically important cabbage, canola and Chinese cabbage genomes
Creators: name: Lawrence, Susan
name: Novak, Nicole
Publisher: name: figshare
Year: 2018
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Science Policy
subject: 60506 Virology

description: SRA data confirming expression of B. napus ZFPs (PDF 195 kb)
Elimination of resonant divergences from QED in super-strong magnetic fields
Creators: name: Graziani, Carlo
name: Harding, Alice K.
name: Sina, Ramin
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the resonant divergences that occur in quantum scattering cross-sections in the presence of a strong external magnetic field. We demonstrate that all such divergences may be eliminated by introducing radiative corrections to the leading-order scattering amplitudes. These corrections impose a choice of basis states that must be used in scattering calculations: electron states must diagonalize the mass operator, while photon states must diagonalize the polarization operator. The radiative corrections introduce natural line-widths into the energy denominators of all propagators, as well as into the time-development exponentials of all scattering states corresponding to external lines. Since initial and final scattering states may now decay, it is logically necessary to compute scattering amplitudes for a finite time-lapse between the preparation of the initial state and the measurement of the final state. Strict energy conservation, which appeared in previous formulations of the theory, must thus be abandoned. We exhibit the generic formulae for the scattering cross-sections in two useful limits, corresponding to the cases where either the initial states or the final states are stable, and discuss the application of the general formula when neither of these limits applies.
description: 23 pages, LATEX, 5 uuencoded, tar-compressed Postscript figures, uses the REVTEX macros. To appear in Physical Review D.
Group-B Streptococci: developing a correlate of protection for future vaccine trials with the help of pregnant Gambian women and their infants
Creators: name: Mehring-Le Doare, Kirsty
Publisher: name: Imperial College London
Year: 2016

description: Background: Vertical GBS transmission is the prerequisite for early-onset disease. Disease protection is associated with maternally-derived anti-GBS antibody. This study investigates the correlation between serotype-specific functional antibody in cord sera and maternal/infant GBS colonisation, as a surrogate marker of GBS colonisation and thus disease protection. Methods: 750 Gambian mother/infant pairs were followed to day 60-89 postpartum. Maternal/infant GBS colonisation was determined by culture and polymerase chain reaction. Cord and infant serum were collected for functional antibody concentrations, analysed by flow cytometry. Results: Maternal colonisation was 33.7%; serotype (ST) V was most prevalent. Functional antibody concentration was lower in colonised- than in non-colonised mother/infant pairs at birth (STIa (p<0.001), STII (p<0.001), STIII (p<0.001) and STV (p<0.001)). Mother-colonised/infant-non-colonised pairs had significantly lower functional antibody concentration than non-colonised mother/infant pairs against STIa (p=0.001), STII (p=0.001), STIII (p<0.001) but not STV (p=1.0). Persistently colonised infants had lower functional antibody concentration than non-colonised infants against STII (p=0.04) and STV (p=0.01). Reduced infant colonisation risk was associated with functional antibody concentration above the 75th centile against STIa (p<0.001), STII (p<0.001), STIII (p=0.01) and STV (p<0.001). A ST-dependent threshold was observed above which infants were non-colonised at birth. Conclusions: Higher concentrations of functional maternally-derived antibodies are associated with a decreased risk of GBS colonisation in infants up to day 60-89 of life. Enhancing maternally-derived antibody concentrations through vaccination may reduce infant colonisation and so reduce the risk of GBS disease.
HI and dark matter in the windy starburst dwarf galaxy NGC1705
Creators: name: Meurer, Gerhardt R.
name: Staveley-Smith, Lister
name: Killeen, N. E. B.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present 21cm HI line observations of the blue compact dwarf galaxy NGC1705. Previous optical observations show a strong outflow powered by an ongoing starburst dominating the HII morphology and kinematics. In contrast, most of the HI lies in a rotating disk. An extraplanar HI spur accounts for ~ 8% of the total HI mass, and is possibly associated with the HII outflow. The inferred mass loss rate out of the galaxy's core is significant ~ 0.2 - 2 M_sun/yr, but does not dominate the HI dynamics. Mass model fits to the rotation curve show that the dark matter (DM) halo is dominant at nearly all radii and has a central density ρ_0 \approx 0.1 M_sun/pc^3: ten times higher than typically found in dwarf irregular galaxies, but similar to the only other mass-modelled blue compact dwarf, NGC2915. This large difference strongly indicates that there is little evolution between dwarf irregular and blue compact dwarf types. Instead, dominant DM halos may regulate the morphology of dwarf galaxies by setting the critical surface density for disk star formation. Neither our data nor catalogue searches reveal any likely external trigger to the starburst in NGC1705.
description: Accepted by MNRAS. 14 pages, 12 figures, uses mn.sty, psfig.sty
Reminiscences of Walter N. Thayer 1967
Publisher: name: Columbia University
Year: 2020
Subjects: Lawyers
Presidents--Election--1952.--United States
Presidents--Election--1960.--United States

description: 1952 Citizens for Eisenhower Committee; 1960 Volunteers for Nixon and National Republican Citizens Committee; relations between President Eisenhower and Richard Nixon in 1960 campaign
Additional file 5 of Characterization of tea (Camellia sinensis L.) flower extract and insights into its antifungal susceptibilities of Aspergillus flavus
Creators: name: Chen, Fangfang
name: Chen, Yu-Pei
name: Wu, Hongtan
name: Li, Ya
name: Zhang, Shudi
name: Ke, Jincheng
name: Yao, Jeng-Yuan
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Neuroscience
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Supplementary Material 5
Rosa rubiginosa Linnaeus 1771
Creators: name: Jarvis, Charlie
Publisher: name: Linnaean Society of London in association with the Natural History Museum
Year: 2007
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Rosales
Rosaceae
Rosa
Rosa rubiginosa

description: Rosa rubiginosa Linnaeus, Mantissa Plantarum Altera: 564. 1771.
"Habitat in Europa australi. Mygind." RCN: 3732.
Lectotype (Ghora & Panigrahi, Fam. Rosaceae India 2: 240. 1995): Mygind 8, Herb. Linn. No. 652.6 (LINN), see p. 223.
Current name: Rosa rubiginosa L. (Rosaceae).
Note: Turland (in Taxon 45: 565. 1996) independently made the same choice of type as Ghora & Panigrahi. See an extremely detailed discussion by Reichert (in Gleditschia 24: 18-22. 1997).
description: Published as part of Jarvis, Charlie, 2007, Chapter 7: Linnaean Plant Names and their Types (part R), pp. 785-805 in Order out of Chaos. Linnaean Plant Types and their Types, London :Linnaean Society of London in association with the Natural History Museum on page 799, DOI: 10.5281/zenodo.291971
Order-by-disorder phenomena in cold atomic gases
Creators: name: Payrits, Matjaz
Publisher: name: Imperial College London
Year: 2016

description: This thesis presents novel theoretical results on two cold atomic systems with particular emphasis on the order-by-disorder mechanism that they exhibit. The latter selects one or a number of classically degenerate states of lowest energy as the true ground states on the basis of Helmholtz free energy contributions of fluctuations about the classical solutions. It has traditionally played an important role in solid-state systems but has so far not been conclusively observed. The first system considered is that of cold bosons hopping in the two-dimensional dice lattice in the presence of an artificial gauge field, tuned to provide half an elementary flux per plaquette. The single-particle band structure consists entirely of flat bands. Many-particle behaviour is captured by a Bose-Hubbard model with contact interactions. Mean-field analysis yields a large degeneracy of classical ground states which is lifted through Order by Disorder. A closer analysis yields a picture of free-energy-mediated interactions between domain walls separating distinct, classically degenerate regions. The second system is that of spin-2 species in a tightly confining spatial potential, with a generalised quadratic-Zeeman coupling. It is analysed by means of an exact mapping of the many-body Hamiltonian onto that of a five-dimensional rotor. The new Hamiltonian is in general non-Hermitian, but Hermitianising transforms may be found in a number of regimes. Analytical results for the ordinary quadratic Zeeman potential are presented and shown to yield qualitatively different behaviour from the mean-field analysis. In particular, there are no signs of a fluctuation-induced phase transition, predicted by mean-field theory. Motivated by this, an alternative potential, breaking less symmetry, is considered within the rotor framework and shown to display microscopic parallels of Order by Disorder.