cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A biomechanical investigation of a dislocation spinal cord injury in a rat model
Creators: name: Mattucci, Stephen Frank Ernesto
Publisher: name: University of British Columbia
Year: 2017

description: Traumatic spinal cord injuries clinically occur in a heterogeneous fashion, including at different spinal levels, injury velocities, and injury mechanisms. Clinical treatment options, such as early surgical decompression produce inconsistent recovery outcomes in the patient population, despite demonstrating effectiveness in preclinical animal models. The most common biomechanical factors, such as cervical level, high-energy impact and dislocation injury mechanism, are not adequately represented in preclinical models, which may explain the lack of agreement between clinical studies. The overall objective of this thesis was to investigate the biomechanics of a high-speed cervical dislocation rat model at acute stages, refine the model, and incorporate residual compression. The temporal progression of acute SCI was investigated in different injury mechanisms, where dislocation injuries demonstrated the fastest loss of white matter tissue. To refine the dislocation model, new vertebral injury clamps were designed with a feature allowing the clamps to pivot and self-align when tightened. The vertebral kinematics during a dislocation injury were analysed using high-speed x-ray and clamp slippage was significantly reduced with the self-aligning clamps, compared to the existing clamps. This study also emphasized the importance of validating injury displacements against input parameters, particularly when comparing results or reproducing injuries. In order to implement residual compression within the dislocation model, injury parameters were independently investigated. Electrophysiology techniques were implemented to determine a minimum residual compression depth that affects signal conduction following a traumatic injury. Continuously holding the residual compression following the initial injury induced a significantly different physiological response compared to when the injury was immediately reduced. Behavioural outcome was used to identify severities following a range of displacements, and four hours of residual compression was survivable following a ‘mild’ traumatic injury, indicating suitable parameters for future studies. Rats of the same weight were identified to have different anatomical dimensions and structural properties of the spinal column, potentially influencing injury outcomes in closed-column models. The continued development and implementation of the cervical dislocation injury model in the rat will deepen understanding of SCI biomechanics and provide an additional clinically-relevant injury model for testing the robustness of potential treatment therapies.
Reactivity of a Phosphanylalane Complex towards Lewis Bases
Creators: name: Vogel, Ulf
name: Schwan, Karl-Christian
name: Scheer, Manfred
Publisher: name: Universität Regensburg
Year: 2004
Subjects: subject: Aluminum; Phosphorus; Hydrides; Reactivity; Lewis bases
subject: 540 Chemie

description: The reactivity of the Lewis acid/base stabilized complex of phosphanylalane [(CO)5W(H2PAlH2·NMe3)] (1) towards the Lewis bases THF and NMe3 has been investigated. The reaction with THF leads to decomposition of the complex. One of the decomposition products was identified as containing the anion [{(CO)5W}2PH2]- (2). This anion could be synthesized independently by reaction of [(CO)5WPH3] with KH in the presence of [(CO)5W(THF)] and was isolated as the tetraphenylphosphonium salt [Ph4P][{(CO)5W}2PH2] (2a). The treatment of 1 with NMe3 leads to the formation of [(CO)5W(H2PAlH2·2 NMe3)] (3) containing a five-coordinate aluminum atom. Compound 3 exhibits a fast exchange of the NMe3 ligands in solution containing an excess of NMe3. The products were characterized by spectroscopic methods and X-ray crystallography.
Digitale Medien in der Hand von Jugendlichen: «Risiken und Chancen der digitalen Medien im Jugendalter und wie neue Medien als Ressourcen in der offenen Jugendarbeit eingesetzt werden können»
Creators: name: Brunner, Romana
Publisher: name: Zenodo
Year: 2019

description: In der vorliegenden Bachelorarbeit «Digitale Medien in der Hand von Jugendlichen» der Hochschule Luzern Soziale Arbeit, untersucht die Autorin Romana Brunner die Risiken und Chancen, welche die Nutzung von digitalen Medien im Jugendalter mit sich bringen und dessen Auswirkungen auf die Identitätsentwicklung. Anhand von Literaturbeiträgen wurden die Wirkungen der digitalen Medien auf soziale Beziehungen, Sexualität und die eigene Werteentwicklung untersucht. In der qualitativen Forschung dieser Arbeit wurden durch Experteninterviews mit vier Fachpersonen der offenen Jugendarbeit durchgeführt. Diese zeigen auf, wie digitale Medien als Ressourcen im beruflichen Alltag eingesetzt werden können. Die Ergebnisse aus der Forschung zeigen eine Auswahl an Anwendungsmöglichkeiten auf und beschreiben die daraus hervorgehenden Herausforderungen und Chancen, welche digitale Medien mit sich bringen. Zusammenfassend kann ausgesagt werden, dass Risiken und Gefahren, die bei der Nutzung von digitalen Medien entstehen verringert werden können, indem Fachpersonen der Jugendarbeit Jugendliche im Umgang mit Medien begleiten und unterstützen. Durch kreative Mediennutzung werden Lernfelder geschaffen, welche Jugendliche im Umgang mit Medien kompetenter machen. Die Ergebnisse aus der Theorie wurden mit den gewonnen Praxiserfahrungen verglichen und reflektiert. Abgerundet wird die Arbeit mit Erkenntnissen und Schlussfolgerungen für die Profession der Soziokulturellen Animation, welche durch das Verfassen dieser Arbeit gewonnen werden konnten.
description: + Code Diss LU: hslusa bask be 2019 + Fussnote: Bachelorarbeit, Hochschule Luzern - Soziale Arbeit, Ausbildungsgang Soziokultur, 2019
Beiträge zum Reaktionsverhalten von Phosphaalkinen gegenüber Übergangsmetallkomplexen - Synthese und Kristallstrukturanalyse von [(Ph3P)2Pt(2-PCMes)], [M(CO)3(4-P2C2Mes2)] (M = Fe, Ru), [Cp*Mo(CO)Cl(4-P2C2tBu2)] und [K(tol)2]2[Mn(CO)4{Mn(CO)3(4-P2C2tBu2)}2]2
Creators: name: Himmel, Daniel
name: Seitz, Markus
name: Scheer, Manfred
Publisher: name: Universität Regensburg
Year: 2004
Subjects: subject: Phosphaalkyne; 1,3-Diphosphete ligands; Cyclisations; Reactivity; Transition metal complexes
subject: 540 Chemie

description: Die Reaktion von MesCP (Mes = 2, 4, 6-Me3C6H2) mit [(Ph3P)2Pt(2-C2H4)] führt zu [(Ph3P)2Pt(2-PCMes)] (1) während mit Fe2(CO)9 bzw. [Ru(CO)4(C2H4)] die 1, 3-Diphosphetkomplexe [M(CO)3(4-P2C2Mes2)] (M = Fe(2), Ru(3)) und [Ru(CO)3(4:1-P2C2Mes2){Ru(CO)2(4-P2C2Mes2)}] (4) gebildet werden. Weiterhin wurde das Reaktionsverhalten von t-BuCP untersucht, wobei mit [Cp*Mo(CO)3Cl] der Komplex [Cp*Mo(CO)Cl(4-P2C2tBu2)] (6) erhalten wurde und mit K[Mn(CO)5], [K(tol)2]2[Mn(CO)4{Mn(CO)3(4-P2C2tBu2)}2]2 (7) (tol = Toluol) isoliert werden konnte. Die Reaktionsprodukte wurden durch Röntgenstrukturanalyse (außer 4) sowie mit spektroskopischen Methoden umfassend charakterisiert.
Back reaction, covariant anomaly and effective action
Creators: name: Jiang, Qing-Quan
name: Cai, Xu
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the presence of back reaction, we first produce the one-loop corrections for the event horizon and Hawking temperature of the Reissner-Nordström black hole. Then, based on the covariant anomaly cancelation method and the effective action technique, the modified expressions for the fluxes of gauge current and energy momentum tensor, due to the effect of back reaction, are obtained. The results are consistent with the Hawking fluxes of a (1+1)-dimensional blackbody at the temperature with quantum corrections, thus confirming the robustness of the covariant anomaly cancelation method and the effective action technique for black holes with back reaction.
description: 17 pages
Drug Abuse Ontology to Harness Web-Based Data for Substance Use Epidemiology Research: Ontology Development Study
Creators: name: Lokala, Usha
name: Lamy, Francois
name: Daniulaityte, Raminta
name: Gaur, Manas
name: Gyrard, Amelie
name: Thirunarayan, Krishnaprasad
name: Kursuncu, Ugur
name: Sheth, Amit
Publisher: name: JMIR
Year: 2022
Subjects: UMBC Ebiquity Research Group

description: Background: Web-based resources and social media platforms play an increasingly important role in health-related knowledge and experience sharing. There is a growing interest in the use of these novel data sources for epidemiological surveillance of substance use behaviors and trends.;Objective: The key aims were to describe the development and application of the drug abuse ontology (DAO) as a framework for analyzing web-based and social media data to inform public health and substance use research in the following areas: determining user knowledge, attitudes, and behaviors related to nonmedical use of buprenorphine and illicitly manufactured opioids through the analysis of web forum data Prescription Drug Abuse Online Surveillance; analyzing patterns and trends of cannabis product use in the context of evolving cannabis legalization policies in the United States through analysis of Twitter and web forum data (eDrugTrends); assessing trends in the availability of novel synthetic opioids through the analysis of cryptomarket data (eDarkTrends); and analyzing COVID-19 pandemic trends in social media data related to 13 states in the United States as per Mental Health America reports.;Methods: The domain and scope of the DAO were defined using competency questions from popular ontology methodology (101 ontology development). The 101 method includes determining the domain and scope of ontology, reusing existing knowledge, enumerating important terms in ontology, defining the classes, their properties and creating instances of the classes. The quality of the ontology was evaluated using a set of tools and best practices recognized by the semantic web community and the artificial intelligence community that engage in natural language processing.;Results: The current version of the DAO comprises 315 classes, 31 relationships, and 814 instances among the classes. The ontology is flexible and can easily accommodate new concepts. The integration of the ontology with machine learning algorithms dramatically decreased the false alarm rate by adding external knowledge to the machine learning process. The ontology is recurrently updated to capture evolving concepts in different contexts and applied to analyze data related to social media and dark web marketplaces.;Conclusions: The DAO provides a powerful framework and a useful resource that can be expanded and adapted to a wide range of substance use and mental health domains to help advance big data analytics of web-based data for substance use epidemiology research.;Trial Registration:
The conic-gearing image of a complex number and a spinor-born surface geometry
Creators: name: Yefremov, Alexander P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: Quaternion (Q-) mathematics formally contains many fragments of physical laws; in particular, the Hamiltonian for the Pauli equation automatically emerges in a space with Q-metric. The eigenfunction method shows that any Q-unit has an interior structure consisting of spinor functions; this helps us to represent any complex number in an orthogonal form associated with a novel geometric image (the conic-gearing picture). Fundamental Q-unit-spinor relations are found, revealing the geometric meaning of spinors as Lamé coefficients (dyads) locally coupling the base and tangent surfaces.
description: 7 pages, 1 figure
The OpenAIRE Research Graph - Opportunities and challenges for science
Creators: name: Manghi, Paolo
name: Bardi, Alessia
Publisher: name: Zenodo
Year: 2019
Subjects: Open Science
Open Access
Knowledge Graph
OpenAIRE
Scholarly communication
Scientific publishing

description: Slides presented at the International Open Science conference in Berlin (20 March 2019). The presentation is about the OpenAIRE activities to foster and support the implementation of Open Science practices, focusing on the work for the materialisation of an open metadata research graph of interlinked scientific products, with access rights information, linked to funding information and research communities. The aim is to build a high quality, trusted, public, open science graph on top of which different types of services can be built, for example for monitoring research impact and research assessment.
Lithium depletion in solar-like stars: no planet connection
Creators: name: Baumann, Patrick
name: Ramírez, Iván
name: Meléndez, Jorge
name: Asplund, Martin
name: Lind, Karin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have determined precise stellar parameters and lithium abundances in a sample of 117 stars with basic properties very similar to the Sun. This sample selection reduces biasing effects and systematic errors in the analysis. We estimate the ages of our sample stars mainly from isochrone fitting but also from measurements of rotation period and X-ray luminosity and test the connection between lithium abundance, age, and stellar parameters. We find strong evidence for increasing lithium depletion with age. Our sample includes 14 stars that are known to host planets and it does not support recent claims that planet-host stars have experienced more lithium depletion than stars without planets. We find the solar lithium abundance normal for a star of its age, mass, and metallicity. Furthermore, we analyze published data for 82 stars that were reported to support an enhanced lithium depletion in planet hosts. We show that those stars in fact follow an age trend very similar to that found with our sample and that the presence of giant planets is not related to low lithium abundances. Finally, we discuss the systematic biases that led to the incorrect conclusion of an enhanced lithium depletion in planet-host stars.
description: 11 pages, 8 figures
Energy efficient resource allocation for Non-Orthogonal Multiple Access (NOMA) systems
Creators: name: Fang, Fang
Publisher: name: University of British Columbia
Year: 2017

description: Non-orthogonal multiple access (NOMA) is a promising technique for the fifth generation (5G) mobile communication due to its capability of achieving high spectral efficiency and high data rate. A popular NOMA scheme uses power domain to achieve multiple access. By applying successive interference cancellation (SIC) technique at the receivers, multiple users with different power levels can be multiplexed on the same frequency band, providing higher sum rate than that of conventional orthogonal multiple access (OMA) schemes. The energy consumption has increased rapidly in recent years. To save energy and meet the requirement of green communications in 5G, we focus on the energy efficient resource optimization for NOMA systems. Our research aim is to maximize the system energy efficiency in NOMA systems by considering perfect channel state information (CSI) and imperfect CSI via resource management. We first study the energy efficient resource allocation for a downlink single cell NOMA network with perfect CSI. The energy efficient resource allocation is formulated as a nonconvex problem. A low-complexity suboptimal algorithm based on matching theory is proposed to allocate users to subchannels. A novel power allocation is designed to further maximize the system energy efficiency. However, the perfect CSI is challenging to obtain in practice. We subsequently investigate energy efficiency improvement for a downlink NOMA single cell network by considering imperfect CSI. To balance the system performance and computational complexity, we propose a new suboptimal user scheduling scheme, which closely attains the optimal performance. By utilizing Lagrangian approach, an iterative power allocation algorithm is proposed to maximize the system energy efficiency. Implementing NOMA in Heterogeneous networks (HetNets) can alleviate the cross-tier interference and highly improve the system throughput via resource optimization. By considering the cochannel interference and cross-tier interference, an iterative algorithm is proposed to maximize the macro cell and small cells energy efficiency. Simulations results show that the proposed algorithm can converge within ten iterations and can achieve higher system energy efficiency than that of OMA schemes.
Tetraphosphacyclopentadienyl- und Triphosphaallyl-Liganden in Eisenkomplexen
Creators: name: Scheer, Manfred
name: Deng, Shining
name: Scherer, Otto J.
name: Sierka, Marek
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: DFT-Rechnungen; Eisen; Metallocene; Phosphor; Polyphosphorliganden
subject: 540 Chemie

description: Vielseitige Phosphorchemie: Die Reaktion des Bicyclotetraphosphan-Komplexes 1 mit PCtBu lieferte gleich zwei neuartige Produkte mit Polyphosphorliganden: den Triphosphaallyl-verbrückten Zweikernkomplex 2 und das 1,2,3,4-Tetraphosphaferrocen 3. Cp=5-C5H2tBu3.
The evolution of dwarf galaxies in the Coma supercluster
Creators: name: Mahajan, Smriti
name: Haines, Chris P.
name: Raychaudhury, Somak
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We employ spectroscopic and photometric data from SDSS DR7, in a 500 sq degree region, to understand the evolution of dwarf (~M*+2
description: 6 Pages, 5 Figures, Accepted for publication in MNRAS
Remarks on self-interaction correction to black hole radiation
Creators: name: Jiang, Qing-Quan
name: Cai, Xu
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the work [P. Kraus and F. Wilczek, \textit{Self-interaction correction to black hole radiation, Nucl. Phys.} B433 (1995) 403], it has been pointed out that the self-gravitation interaction would modify the black hole radiation so that it is no longer thermal, where it is, however, corrected in an approximate way and therefore is not established its relationship with the underlying unitary theory in quantum theory. In this paper, we revisit the self-gravitation interaction to Hawking radiation of the general spherically symmetric black hole, and find that the precisely derived spectrum is not only deviated from the purely thermal spectrum, but most importantly, is related to the change of the Bekenstein-Hawking entropy and consistent with an underlying unitary theory.
description: 14 pages
Spatially-resolved potential measurement with ion crystals
Creators: name: Brownnutt, Michael
name: Harlander, Maximilian
name: Hänsel, Wolfgang
name: Blatt, Rainer
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a method to measure potentials over an extended region using one-dimensional ion crystals in a radio frequency (RF) ion trap. The equilibrium spacings of the ions within the crystal allow the determination of the external forces acting at each point. From this the overall potential, and also potentials due to specific trap features, are calculated. The method can be used to probe potentials near proximal objects in real time, and can be generalized to higher dimensions.
description: 7 pages (double spaced), 3 figures
Multiplexing Biochemical Signals
Creators: name: de Ronde, Wiet
name: Tostevin, Filipe
name: Wolde, Pieter Rein ten
Publisher: name: arXiv
Year: 2010
Subjects: subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: In this paper we show that living cells can multiplex biochemical signals, i.e. transmit multiple signals through the same signaling pathway simultaneously, and yet respond to them very specifically. We demonstrate how two binary input signals can be encoded in the concentration of a common signaling protein, which is then decoded such that each of the two output signals provides reliable information about one corresponding input. Under biologically relevant conditions the network can reach the maximum amount of information that can be transmitted, which is 2 bits.
description: 4 pages, 4 figures
title: Hypertrophic Cardiomyopathy: MRI review and update.
Creators: name: Dos Santos Reis Ferreira, Pedro Miguel
Publisher: name: European Congress of Radiology
Year: 2019
Subjects: subject: Congenital
subject: Outcomes analysis
subject: Education
subject: MR
subject: Management
subject: Cardiovascular system
subject: Cardiac

description: Learning objectives Background Findings and procedure details Conclusion Personal information References
description: Learning objectives: Resume in a practical guide for radiological use , the paper of different Cardiac Magnetic Resonance Imaging (CMRI) techniques to demonstrate the typical morphological characteristics and phenotypes of Hypertrophic Cardiomyopathy (HCM). Describe the...
Measuring radiant emissions from entire prescribed fires with ground, airborne and satellite sensors – RxCADRE 2012
Creators: name: Dickinson, Matthew B.
name: Hudak, Andrew T.
name: Zajkowski, Thomas
name: Loudermilk, E. Louise
name: Schroeder, Wilfrid
name: Ellison, Luke
name: Kremens, Robert L.
name: Holley, William
name: Martinez, Otto
name: Paxton, Alexander
name: Bright, Benjamin C.
name: O’Brien, Joseph J.
name: Hornsby, Benjamin
name: Ichoku, Charles
name: Faulring, Jason
name: Gerace, Aaron
name: Peterson, David
name: Mauceri, Joseph
Publisher: name: CSIRO Publishing
Year: 2015

description: Characterising radiation from wildland fires is an important focus of fire science because radiation relates directly to the combustion process and can be measured across a wide range of spatial extents and resolutions. As part of a more comprehensive set of measurements collected during the 2012 Prescribed Fire Combustion and Atmospheric Dynamics Research (RxCADRE) field campaign, we used ground, airborne and spaceborne sensors to measure fire radiative power (FRP) from whole fires, applying different methods to small (2 ha) and large (>100 ha) burn blocks. For small blocks (n = 6), FRP estimated from an obliquely oriented long-wave infrared (LWIR) camera mounted on a boom lift were compared with FRP derived from combined data from tower-mounted radiometers and remotely piloted aircraft systems (RPAS). For large burn blocks (n = 3), satellite FRP measurements from the Moderate-resolution Imaging Spectroradiometer (MODIS) and Visible Infrared Imaging Radiometer Suite (VIIRS) sensors were compared with near-coincident FRP measurements derived from a LWIR imaging system aboard a piloted aircraft. We describe measurements and consider their strengths and weaknesses. Until quantitative sensors exist for small RPAS, their use in fire research will remain limited. For oblique, airborne and satellite sensors, further FRP measurement development is needed along with greater replication of coincident measurements, which we show to be feasible.
Making 'space' for women in Canadian peacekeeping : the battle of closing the gap
Creators: name: Hassan, Maira
Publisher: name: University of British Columbia
Year: 2017

description: Women account for a small percentage of military peacekeepers. In the Canadian context, the lack of gender parity was a concern at the recent United Nations Peacekeeping Defence Ministerial conferences, the most recent one taking place in Vancouver, Canada. This thesis examines the ‘space’ of peacekeeping, its evolution over the years, including a brief history of Canada’s involvement in military peacekeeping and women’s role in it. The research discusses the implications of highlighting benefits of having women in peacekeeping, the major systemic barriers for women in the Canadian Armed Forces and consequently in Canadian military peacekeeping. Using a feminist legal theory lens, the thesis analyzes the United Nations Security Council Resolution (UNSCR) 1325 and its national implementation in Canada. The thesis also remarks on key conceptual issues and possible contradictions in military peacekeeping, acknowledging the gendered ‘space’ of international law, peace and security. Although the study does not provide concrete suggestions for reform, it puts forth considerations for change, new ways of thinking and advocating for systemic transformations for gender equality. This research study uses mixed methods, drawing from existing literature, relevant documents received through the Access to Information Request (ATIR) procedure and through expert interviews. The 22 interview participants consisted of senior officials in the Canadian Armed Forces, policy experts, legal professionals and academics with relevant expertise in peacekeeping and the Canadian military. Thus, the study contributes original insights to the discussion of Canadian peacekeeping, attempting to pave a new way forward as Canada seeks to reestablish its identity as a leader in peacekeeping and international peace and security.
Dense Molecular Gas Excitation at High Redshift: Detection of HCO+(J=4-3) Emission in the Cloverleaf Quasar
Creators: name: Riechers, Dominik A.
name: Walter, Fabian
name: Carilli, Christopher L.
name: Cox, Pierre
name: Weiss, Axel
name: Bertoldi, Frank
name: Menten, Karl M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We report the detection of HCO+(J=4-3) emission in the Cloverleaf Quasar at z=2.56, using the IRAM Plateau de Bure Interferometer. HCO+ emission is a star formation indicator similar to HCN, tracing dense molecular hydrogen gas (n(H2) ~= 10^5 cm^-3) within star-forming molecular clouds. We derive a lensing-corrected HCO+(J=4-3) line luminosity of L'(HCO+(4-3)) = (1.6+/-0.3) x 10^9 (mu_L/11)^-1 K km/s pc^2, which corresponds to only 48% of the HCO+(J=1=0) luminosity, and
description: 4 pages, 3 figures, to appear in ApJ (accepted November 3, 2010)
Cosmic Rays from Pulsars and Magnetars
Creators: name: Heyl, Jeremy S.
name: Gill, Ramandeep
name: Hernquist, Lars
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compare the expected abundance of cosmic-ray electrons and positrons from pulsars and magnetars. We assume that the distribution of infant pulsars and magnetars follows that of high-mass stars in the Milky Way and that the production rate of cosmic rays is proportional to the spin-down and magnetic-decay power of pulsars and magnetars, respectively. In combination with primary and secondary cosmic-ray leptons from other sources (especially supernova remnants), we find that both magnetars and pulsars can easily account for the observed cosmic-ray spectrum, in particular the dip seen by HESS at several TeV and the increase in positron fraction found by PAMELA.
description: 5 pages, 3 figures, accepted to MNRAS
One-Dimensional Polymers Based on [{CpMo(CO)2}2(,2-P2)]: Solid-State Conformation Analysis by NMR Spectroscopy and DFT Calculations
Creators: name: Scheer, Manfred
name: Gregoriades, Laurence John
name: Bai, Junfeng
name: Sierka, Marek
name: Brunklaus, Gunther
name: Eckert, Hellmut
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: density functional calculations; molybdenum; NMR spectroscopy; phosphorus; polymers; solid-state structures
subject: 540 Chemie

description: Reaction of the complex [{CpMo(CO)2}2(,2-P2)] (1) with CuI halides leads to the quantitative formation of the novel one-dimensional linear polymers [CuX{Cp2Mo2(CO)4(,2:1:1-P2)}] (X=Cl (4), Br (5), I (6)). The same products 4 and 5 were obtained when 1 was treated with CuCl2 and CuBr2, respectively. The solid-state structures are compared and their remarkable influence on the respective 31P magic angle spinning (MAS) NMR spectra is interpreted with the help of density functional theory (DFT) calculations on the model compounds [{(CuX)2{Cp2Cr2(CO)4(,2:1:1-P2)}2}3] (X=Cl (4 a), Br (5 a)) in which the molybdenum atoms are replaced by their lighter homologue chromium.
Antimony-Tungsten Triple Bond: A Stable Complex with a Terminal Antimony Ligand [Antimon-Wolfram-Dreifachbindung: ein stabiler Komplex mit terminalem Sb-Liganden]
Creators: name: Balázs, Gábor
name: Sierka, Marek
name: Scheer, Manfred
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: antimony; bond analysis; density functional calculations; pnicogen ligands; tungsten
subject: 540 Chemie

description: The intermediately generated Li[(Me3Si)2CHSb(H)] reacts with [(N3N)WCl] to give the first complex with a terminal stibido ligand, [(N3N)WSb] (see structure). Spectroscopic features and the X-ray structure of this product clearly reveal the triple-bond character of the WSb bond. A comparison of the bonding situations in the series [(N3N)WE] (E=P, As, Sb, Bi) indicates only a weak polarization of the triple bond.
Ein sphärischer Cluster aus Vier- und Sechsringeinheiten
Creators: name: Johnson, Brian P.
name: Dielmann, Fabian
name: Balázs, Gábor
name: Sierka, Marek
name: Scheer, Manfred
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: Cluster; Dichtefunktionalrechnungen; Fullerene; Phosphor; Tantal
subject: 540 Chemie

description: Magische Kugel: Ein sphärischer Cluster mit einem Gerüst aus 32 anorganischen Atomen (siehe Struktur) wurde durch Koordination von CuCl-Einheiten an einen (cyclo-P4)-Tantal-Komplex erhalten. Das Phosphor-Kupfer-Gerüst weist eine alternierende Anordnung aus Vier- und Sechsringen auf, die an das hypothetische Oh-symmetrische Fulleren C32 erinnert.
An Unusual Building Block for Supramolecular Aggregates: The Mixed Group 15/16 Element Ligand Complex [(Cp*Mo)2(,3-P3)(,2-PS)] [Ein ungewöhnlicher Baustein für supramolekulare Aggregate aus Elementen der Gruppe 15 und 16: der gemischte Ligandkomplex [(Cp*Mo)2(,3-P3)(,2-PS)]]
Creators: name: Gregoriades, Laurence John
name: Balázs, Gábor
name: Brunner, Eike
name: Gröger, Christian
name: Wachter, Joachim
name: Zabel, Manfred
name: Scheer, Manfred
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: Group 11 metals; molybdenum; phosphorus; sulfur; supramolecular chemistry
subject: 540 Chemie

description: Unusual suspect: The complex [(Cp*Mo)2(,3-P3)(,2-PS)] reacts with CuI and Ag[Al{OC(CF3)3}4] to form two novel linear polymers (see structure of CuI derivative; Cu light blue, I violet, Mo blue, P pink, S yellow). Even with X-ray crystallographic data available, the fact that the sulfur atoms in these polymers do not coordinate to the Group 11 metal centers could only be established with the help of 31P MAS NMR spectroscopy. Cp*=C5Me5
Fullerene C60 as an Endohedral Molecule within an Inorganic Supramolecule
Creators: name: Scheer, Manfred
name: Schinder, Andrea
name: Merkle, Roger
name: Johnson, Brian P.
name: Linseis, Michael
name: Winter, Rainer F.
name: Anson, Christopher E.
name: Virovets, Alexander
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: 540 Chemie

description: C60[Cu26Cl26L2{Cp*Fe(η5-P5)}13(CH3CN)9] (L = H2O) represents a first example of a complete encapsulation of C60 itself by an inorganic fullerene-like system via molecular recognition of the five- and sixfold-symmetric structural motif of C60. The product exhibits an inorganic cover consisting of 99 inorganic core atoms from pentaphosphaferrocene and Cu(I) chloride building blocks. This is the first instance of a hollow structure that completely encapsulates C60. The overall spherical molecule possesses an outer diameter of 2.3 nm and shows a remarkable electronic interaction between C60 and the encapsulating giant molecule.
A supramolecular assembly of {Fe10} molecular wheels with tubular structures
Creators: name: Jiang, Guoqing
name: Li, Yizhi
name: Hua, Weijie
name: Song, You
name: Bai, Junfeng
name: Li, Shuhua
name: Scheer, Manfred
name: You, Xiaozeng
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 540 Chemie

description: A 3-D supramolecular assembly of {Fe10} molecular wheels, [Fe(CH3O)2(O2CCH2O–Ph)]10·6H2O (1) with tubular structure was successfully prepared by a novel approach of simple modification of the building blocks for making symmetric clusters, Fe10. The diameter of the tubes is approximately 8.9 Å. Meanwhile, this tubular structure as the host traps hexameric clusters of water and the magnetic property of complex 1 shows that antiferromagnetic interactions exist between the high–spin iron(III) ions (S= 5/2) with J= 5.36 cm–1 and g= 2.03.
2D and 3D Cadmium(II) Coordination Polymers from a Flexible Tripodal Ligand of 1,3,5-Tris(carboxymethoxy)benzene and Bidentate Pyridyl-Containing Ligands with Three-, Eight- and Ten-Connected Topologies
Creators: name: Wang, Su-Na
name: Xing, Hang
name: Li, Yizhi
name: Bai, Junfeng
name: Pan, Yi
name: Scheer, Manfred
name: You, Xiaozeng
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: Metal-organic frameworks; Tripodal ligands; Topology; Metal carboxylates
subject: 540 Chemie

description: Four novel cadmium(II) coordination polymers, [Cd3(TCMB)2(4,4-bipy)(H2O)16]n (1), [Cd3(TCMB)2(bpe)(H2O)13]n (2), [Cd3(TCMB)2(bpe)2(H2O)4]n (3), and [Cd3(TCMB)2(dpp)2(H2O)3]n (4), [TCMB = 1,3,5-tris(carboxymethoxy)benzene, 4,4-bipy = (4,4-bipyridine), bpe = 1,2-bis(4-pyridyl)ethane, dpp = 1,3-bis(4-pyridyl)propane] have been hydrothermally synthesized by the self-assembly of the flexible tripodal acid TCMB and Cd(OAc)2·2H2O with pyridyl-containing ligands possessing different flexibilities. Single-crystal X-ray diffraction analysis reveals that the four polymers exhibit novel frameworks due to diverse coordination modes and different conformations of the flexible TCMB as well as pyridyl-containing ligands. Complex 1 shows a unique twofold parallel interpenetrating 2D honeycomb network structure with an unusual 63 topology, in which two different large hexagonal rings are arranged alternately, with extraordinarydimensions of ca. 22.172(6) × 12.947(2) Å (A) and 17.233(2) × 12.947(2) Å (B) based on the distances of the atoms at the opposite positions of the rings. Complex 2 is almost isostructural to complex 1, except that the bidentate bpe ligands bridge the cadmium centers in an anti conformation, rendering the network more flexible. Complex 3 features a 3D network with one of the scarce eight-connected (46, 614, 88)(43)2 topologies based on the rare CdI2-type layer constructed from secondary building units (SBUs) of rare [Cd3(CO2)4]2- isosceles triangle cadmium clusters. Complex 4 possesses distorted CdI2-type layers constructed from unprecedented ten-connected Cd3 clusters which are linked by more flexible dpp ligands in a trans-gauche (TG) conformation in (4,4) networks, leading to another 3D framework of the unusual (418, 624, 83)(43)2 topology. Such an arrangement represents the highest connected topology presently known for the frameworks. Among them, complex 1 displays photoluminescent properties at 460 nm due to the ligand-to-metal charge transfer (LMCT).
Triple Bonds between Transition Metals and the Heavier Elements of Groups 14 and 15
Creators: name: Balázs, Gábor
name: Gregoriades, Laurence John
name: Scheer, Manfred
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: 540 Chemie

description: In the mid-1990s, the first examples of complexes containing triple bonds between transition metals and heavier analogues of the carbon as well as the nitrogen groups were reported, thus signaling the beginning of a new era in organometallic chemistry. Since then the progress in this field has been tremendous, with a large number of representative complexes being isolated and characterized. This review highlights the astonishing development of the chemistry of complexes containing triple bonds between transition metals and the heavier elements of groups 14 and 15 since its birth. The synthesis and the structural and spectroscopic features of these compounds are comprehensively discussed. Furthermore, the elucidation of their bonding modes by quantum-chemical methods as well as the relation between the reactivities of these complexes and their electronic structures are presented.
The Potential of a cyclo-As3-Ligand Complex in Supramolecular Chemistry
Creators: name: Gregoriades, Laurence John
name: Krauss, Hannes
name: Wachter, Joachim
name: Virovets, Alexander V.
name: Scheer, Manfred
name: Sierka, Marek
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: arsenic; copper; molybdenum; self-assembly; silver
subject: 540 Chemie

description: As3 makes the connection: [Cp*Mo(CO)2(3-As3)] reacts with Ag[Al{OC(CF3)3}4] to yield a novel dimeric complex featuring the cyclo-As3 ligand in an unusual face-bridging coordination mode. Analytical data and DFT calculations support the existence of a monomer-dimer equilibrium in solution (see scheme). [Cp*Mo(CO)2(3-As3)] also reacts with CuX (X=Cl, Br, I) to yield insoluble dimers consisting of planar Cu2X2 moieties.
The intersection of conflict, substance use, trauma, and HIV : exploring their complex interplay among conflict affected populations in a rapidly changing northern Uganda
Creators: name: Blair, Alden Hooper
Publisher: name: University of British Columbia
Year: 2017

description: Background: Epidemiologists have long noted a paucity of research addressing the role of substance use in conflict and post-conflict settings especially as it interacts with mental health and HIV vulnerability in affected populations. Such is the case in northern Uganda where after two decades of conflict the region is rapidly changing, and where community leaders are expressing concerns as to perceived rapid increases in substance use and its impact on the population and growing HIV epidemic. Methods: This multidisciplinary research explored the intersection of mental health, substance use, and HIV in the context of conflict. This project was conducted in partnership with the “Cango Lyec Project” a five-year cohort project exploring HIV risk among Acholi people aged 14-49 in the Gulu, Nwoya, and Amuru districts of northern Uganda. The quantitative analyses began with a confirmatory factor analysis of the structure and underlying validity of the AUDIT alcohol scale. Next, multivariable regressions explored factors associated with hazardous drinking in the population. Qualitative analyses used an interpretive and interpretive description (ID) thematic approach to analyze 30 in-depth interviews and explored within the context of the quantitative analyses. Results: Quantitative findings indicated strong validity for the AUDIT scale. Overall, rates of drinking were much lower than the rest of Uganda, and women were significantly less likely than men to consume alcohol or have hazardous use behaviors. After adjustment neither post traumatic stress disorder (PTSD), depression, nor HIV were significantly associated with problematic drinking though there were significant associations with many sexual behaviors, and abduction was protective against problematic drinking among men. Qualitative findings highlighted participants’ views that substance use remained a large and growing problem in the region that was closely tied to HIV. Use was highly stigmatized especially as it pertained to perceptions that it constituted a rejection of Acholi traditions. Conclusion: This research highlights the need to integrate rigorous and population-level epidemiological evidence within community perspectives and understandings of risk. While at times the results appeared to contrast, underlying both were clear areas for intervention that acknowledge the profound trauma inflicted by the conflict and areas to support community- driven change.
Examining health sector application of Program Based Budgeting in Kilifi county, in Kenya
Creators: name: Protus Musotsi
name: Tsofa, Benjamin
Publisher: name: AAS Open Research
Year: 2019

description: Introduction:
Historically, the public health sector has suffered from continuous challenges of misalignment between planning and budgeting especially in LMICs (Tsofa et al., 2016; Barasa et al., 2017;Waithaka et al., 2018).  Program Based Budgeting (PBB) was introduced and promoted to facilitate better linkage between planning and budgeting in public sectors. PBB is a budgeting framework where the budget is organized around programs and subprograms with funds allocation linked to technical outcomes.  Most LMICs adopted PBB as part of public sector reforms promoted by the IMF, World Bank and other international development partners. There is a deficit of empirical literature citing the application and experiences of PBB in the health sector.

Methods:
We conducted a qualitative case study of Kilifi county, as 'pilot phase' of a broader project  that sort to examine, understand and strengthen health sector priority setting, planning and budgeting across different counties in Kenya in the context of fiscal decentralization. We conducted 6 key informant purposely selected participants involved the county health sector planning and budgeting. They included  County Department of Health (CDoH) Mmebers - 3,Treasury officials - 1, Non-governmental Organizations (NGOs) staff - 2. In addition, we undertook review of relevant documents including  the Public Finance Management (PFM) Act, County Government Act, budgeting circulars and the CDoH Annual Work Plan (AWP)/ budget.  We utilized the policy analysis triangle by Walt and Gilson 1994 to examine the the context, process, actors and content of the health sector planning and budgeting at county level

Summary Results

Opportunities Presented by PBB in the Health Sector
• PBB better aligns planning with the budget allocations.
• It increased accountability and transparency of resource allocation.
• It made the budget more open and people could be able to know the county’s contribution to each program.
• It increased consultation during the budget making process.
• It’s a useful tool for mobilizing resources from partners.

Challenges in Implementing PBB at County Level
• Inadequate knowledge and capacity in PBB in the CDoH.
• Government IFMIS system still aligned to the Line Item Budgeting format.
• Negative political influences during resource allocation.
• Lack of goodwill to implement PBB from some program managers within CDoH

Conclusion
• PBB is useful in addressing the historical problem of misalignment between planning and budgeting.
• PBB implementation is yet to be optimized at the county level with the process facing some challenges. • Current challenges of PBB application at CDoH are related more to organizational and operational systems issues
Berufseinstieg mit Bachelor-Studium Soziale Arbeit 50plus: Welche förderlichen und hinderlichen Faktoren begleiten den Berufseinstieg von Absolventinnen und Absolventen 50plus des Bachelor-Studiums Soziale Arbeit an der Hochschule Luzern?
Creators: name: Burri, Irene
name: Schwegler, Claudia
name: Steiner, Brigitte
Publisher: name: Zenodo
Year: 2019

description: Die Stellensuche im Alter von 50plus wird im öffentlichen Diskurs als eher schwierig wahrgenommen. Wie aber gestaltet sich der Berufseinstieg von Absolventinnen und Absolventen 50plus des Bachelor-Studiums Soziale Arbeit? Die Autorinnen dieser Bachelor-Arbeit I. Burri, C. Schwegler und B. Steiner wollen aus Sicht der Sozialen Arbeit mit einer qualitativen Forschung herausfinden, wie dieser Berufseinstieg erlebt und von welchen förderlichen und hinderlichen Faktoren er begleitet wird. Es werden Fachwissen zu den Themen Fachkräftemangel, Arbeitsmarktsituation 50plus und Lebenslanges Lernen sowie Erklärungsansätze aus Soziologie und Psychologie zum Thema Lebensverlauf erarbeitet und für die Diskussion der Forschungsergebnisse beigezogen. Zur Beantwortung der Forschungsfrage Welche förderlichen und hinderlichen Faktoren begleiten den Berufseinstieg von Absolventinnen und Absolventen 50plus des Bachelor-Studiums Soziale Arbeit an der Hochschule Luzern? werden Problemzentrierte Interviews mit Absolvierenden 50plus der Hochschule Luzern - Soziale Arbeit geführt. Diese Interviews werden entlang des Phasenablaufs der Inhaltlich strukturierenden qualitativen Inhaltsanalyse aufbereitet und ausgewertet. Die Diskussion der Forschungsergebnisse zeigt auf, dass der Berufseinstieg 50plus von förderlichen und hinderlichen Faktoren der gesellschaftlichen Strukturen sowie des persönlichem Erlebens und Handelns in diesen Strukturen begleitet wird. Anschliessend werden konkrete Schlussfolgerungen für die Praxis der Sozialen Arbeit und spezifisch für ihre Ausrichtungen Soziokulturelle Animation und Sozialarbeit gezogen.
description: + Code Diss LU: hslusa basa be 2019 + Fussnote: Bachelorarbeit, Hochschule Luzern - Soziale Arbeit, Ausbildungsgang Sozialarbeit, 2019
Evidence of nodal gap structure in the non-centrosymmetric superconductor Y2C3
Creators: name: Chen, J.
name: Salamon, M. B.
name: Akutagawa, S.
name: Akimitsu, J.
name: Singleton, J.
name: Yuan, H. Q.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The magnetic penetration depth $λ(T)$ and the upper critical field $% μ_{0}H_{c2}(T_{c})$ of the non-centrosymmetric (NCS) superconductor Y$_{2} $C$_{3}$ have been measured using a tunnel-diode (TDO) based resonant oscillation technique. We found that the penetration depth $λ(T)$ and its corresponding superfluid density $ρ_{s}(T)$ show linear temperature dependence at very low temperatures ($T\ll T_{c}$), indicating the existence of line nodes in the superconducting energy gap. Moreover, the upper critical field $μ_{0}H_{c2}(T_{c})$ presents an upturn at low temperatures with a rather high value of $μ_{0}H_{c2}(0)$ $\simeq 29$T, which slightly exceeds the weak-coupling Pauli limit. We discuss the possible origins for these nontrivial superconducting properties, and argue that the nodal gap structure in Y$_{2}$C$_{3}$ is likely attributed to the absence of inversion symmetry, which allows the admixture of spin-singlet and spin-triplet pairing states.
description: 5 pages, 3 figures
Metal disordering Cu(II) supramolecular polymers constructed from a tripodal ligand possessing two different functional groups
Creators: name: Wang, Su-Na
name: Bai, Junfeng
name: Li, Yizhi
name: Scheer, Manfred
name: You, Xiaozeng
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: 540 Chemie

description: Two novel coordination polymers with double-layer structures were constructed from a tripodal ligand TCMB (1,3,5-tris(carboxymethoxy)benzene) by controlling the solvent and diffusion velocity of the reaction systems. Both solvated isomers [Cu3(TCMB)2(C5H5N)3(H2O)3·10H2O]( 1, P6/m, a=b= 16.753(1), c= 10.811(1)Å, == 90.00°, = 120.00°) and [Cu3(TCMB)2(C5H5N)3(H2O)3·7.66H2O·DMF]( 2. P-3, a=b= 28.937(3), c= 10.694(1)Å, == 90.00°, = 120.00°) exhibit peculiar metal disordering with fixed ligands due to the fact that the ligand can provide excessive potential coordinative sites with deficient metal centers available. Supramolecular isomerism induced by metal disordering was found for the first time.
Zum Potenzial eines Komplexes mit cyclo-As3-Ligand in der supramolekularen Chemie
Creators: name: Gregoriades, Laurence John
name: Krauss, Hannes
name: Wachter, Joachim
name: Virovets, Alexander V.
name: Scheer, Manfred
name: Sierka, Marek
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: Arsen; Kupfer; Molybdän; Selbstorganisation; Silber
subject: 540 Chemie

description: As3 sorgt für die Verknüpfung: [Cp*Mo(CO)2(3-As3)] reagiert mit Ag[Al{OC(CF3)3}4] zu einem neuen dimeren Komplex, in dem der cyclo-As3-Ligand in einer ungewöhnlichen flächenverbrückenden Koordinationsform vorliegt. Analytische Daten und DFT-Rechnungen belegen die Existenz eines Monomer-Dimer-Gleichgewichtes in Lösung (siehe Schema). Aus CuX (X=Cl, Br, I) und [Cp*Mo(CO)2(3-As3)] entstehen unlösliche Dimere mit planaren Cu2X2-Einheiten.