2,574 research outputs found
Roper Hospital Training School for Nurses Pin
No full text0.25x1.25x0.5". Clothing:Nursing:Pin. Roper Hospital Training School for Nurses pin. The round pin is 14k gold with a blue cross and a wreath of leaves along the outer edges. Verso has an engraving that reads "M. Isabelle Wylie, 1913"
An experimental investigation into pin loading effects on fatigue crack growth in Fibre Metal Laminates
No full textAbstractThis paper provides an experimental investigation into the pin loading effects on the crack growth behaviour in Fibre Metal Laminates. The pin loading effects and bypass loading effects are incorporated in two different tested joints. The analysis of the test results shows that pin loading dominates the crack growth only in the vicinity of the pin hole and the superposition method for analysing stress intensity factor in FMLs with pin loading effects can be applied
The Legal Treatment of Muslim Minorities in Italy. Islam and the Neutral State
No full textslam is a growing presence practically everywhere in Europe. In Italy, however, Islam has met a unique model of state neutrality, religious freedom and church and state collaboration. This book gives a detailed description of the legal treatment of Muslims in Italy, contrasting it with other European states and jurisprudence, and with wider global tendencies that characterize the treatment of Islam. Through focusing on a series of case studies, the author argues that the relationship between church and state in Italy, and more broadly in Europe, should be reconsidered both to secure religious freedom and general welfare.
Working on the concepts of religious freedom, state neutrality, and relationship between church and state, Andrea Pin develops a theoretical framework that combines the state level with the supranational level in the form of the European Convention of Human Rights, which ultimately shapes a unitary but flexible understanding of pluralism. This approach should better accommodate not just Muslims’ needs, but religious needs in general in Italy and elsewhere
Design of pin connections between steel members
No full textThe design of pin connections between steel members has been established for many years in design codes. However, recently, in the scope of the revision of Eurocode 3, Part 1–8 (EN 1993–1-8), questions were raised concerning the safety of the corresponding design verifications. This paper identifies two main aspects that require revision, namely: (i) the possibility to design a pin as a bolt in shear and (ii) the verification of the resistance of the pin itself. Based on a thorough literature review, experimental tests and a parametric study, a new proposal submitted to CEN as an amendment to the code, is presented to solve these two identified issues.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Steel & Composite Structure
Le pin (Pinus sylvestris) : préférence d'un taxon ou contrainte de l'environnement ? Étude des charbons de bois de la grotte Chauvet
No full textThe many samples of charcoal taken during the various study campaigns have allowed the identification of Pinus sp sylvestris/nigra (scotch pine or black pine). Whatever the context (fuel in hearths, torch-wipes, paints), all the charcoal used comes from the same variety. Our knowledge of the contemporary vegetation attests to the presence of other ligneous taxa; the exclusive presence of pine must thus be considered as resulting from the preferential use of this species, the motives for which are discussed.Les nombreux échantillons de charbons de bois prélevés au cours des différentes campagnes d'étude ont permis V identification de Pinus sp sylves- tris/nigra, le pin sylvestre ou le pin noir. Quel que soit le contexte (combustibles de foyer, mouchages de torche, peintures), les charbons de bois utilisés proviennent tous de la même essence. Nos connaissances sur les végétations contemporaines attestent la présence d'autres taxons ligneux, la présence exclusive du pin serait la conséquence d'une utilisation préférentielle de cette espèce dont les motivations sont discutées.Théry-Parisot Isabelle, Thiébault Stéphanie. Le pin (Pinus sylvestris) : préférence d'un taxon ou contrainte de l'environnement ? Étude des charbons de bois de la grotte Chauvet. In: Bulletin de la Société préhistorique française, tome 102, n°1, 2005. La grotte Chauvet à Vallon-Pont-d'Arc : un bilan des recherches pluridisciplinaires Actes de la séance de la Société préhistorique française, 11 et 12 octobre 2003, Lyon. pp. 69-75
Pin-pin resonance as a reference in determining ballasted railway track vibration behaviour
No full textPin-pin resonance is one of the most significant preferred vibration modes of beams, which are supported at equal distances, such as rails at sleepers in railway track structures do. Pin-pin resonance is a vibration that appears in one basic (first) mode and several higher modes, however the basic mode will have the highest amplitudes. In operational conditions of railways, pin-pin resonance only partly influences wheel-rail contact of the train while the speed dependent sleeper-passing frequency is more important. Among other track resonances, pin-pin resonance plays an important role in noise and vibration radiation of the rails and can be used as a meaningful instrument in track system dynamics recognition and optimization. However, existing simple analytic approximations are not sufficiently reliable to perform these recognitions."This will be shown in this paper by means of new tests and simulations that are based on improved models and methods but restricted to ballasted track structures.Railway EngineeringCivil Engineering and Geoscience
Quantum Pin Codes
Get PDFarXiv: 1906.11394We introduce quantum pin codes: a class of quantum CSS codes. Quantum pin codes are a vast generalization of quantum color codes and Reed-Muller codes. A lot of the structure and properties of color codes carries over to pin codes. Pin codes have gauge operators, an unfolding procedure and their stabilizers form multi-orthogonal spaces. This last feature makes them interesting for devising magic-state distillation protocols. We study examples of these codes and their properties
Numerical investigation of bubble dynamics and flow boiling heat transfer in cylindrical micro-pin-fin heat exchangers
Get PDFMicro-pin-fin evaporators are a promising alternative to multi-microchannel heat sinks for two-phase cooling of high power-density devices. Within pin-fin evaporators, the refrigerant flows through arrays of obstacles in cross-flow and is not restricted by the walls of a channel. The dynamics of bubbles generated upon flow boiling and the associated heat transfer mechanisms are expected to be substantially different from those pertinent to microchannels; however, the fundamental aspects of two-phase flows evolving through micro-pin-fin arrays are still little understood. This article presents a systematic analysis of flow boiling within a micro-pin-fin evaporator, encompassing bubble, thin-film dynamics and heat transfer. The flow is studied by means of numerical simulations, performed using a customised boiling solver in OpenFOAM v2106, which adopts the built-in geometric Volume of Fluid method to capture the liquid–vapour interface dynamics. The numerical model of the evaporator includes in-line arrays of pin-fins of diameter of 50μm and height of 100μm, streamwise pitch of 91.7μm and cross-stream pitch of 150μm. The fluid utilised is refrigerant R236fa at a saturation temperature of 30 °C. The range of operating conditions simulated includes values of mass flux G=500–2000kg/(m2s), heat flux q=200kW/m2, and inlet subcooling ΔTsub=0–5K. This study shows that bubbles nucleated in a pin-fin evaporator tend to travel along the channels formed in between the pin-fin lines. Bubbles grow due to liquid evaporation and elongate in the direction of the flow, leaving thin liquid films that partially cover the pin-fins surface. The main contributions to heat transfer arise from the evaporation of this thin liquid film and from a cross-stream convective motion induced by the bubbles in the gap between the cylinders, which displace the hot fluid otherwise stagnant in the cylinders wakes. When the mass flow rate is increased, bubbles depart earlier from the nucleation sites and grow more slowly, which results in a reduction of the two-phase heat transfer. Higher inlet subcooling yields lower two-phase heat transfer coefficients because condensation becomes important when bubbles depart from the hot pin-fin surfaces and reach highly subcooled regions, thus reducing the two-phase heat transfer
Pin/hole joint construction and laminate therefor
No full textA pin/hole joint construction in a laminate (1) comprises layers (9) of fibres and resin bonded to one another. At least one hole (2) extends transversely completely through the layers in the laminate, in which hole a pin (3) is accommodated that bears against the inner surface of the hole for transferring forces between the laminate and the pin. In the laminate a first region (13) is defined in which the layers are directly on top of one another and a second region (14) in which at least one reinforcing layer (5) is provided that is bonded to the adjacent layers of fibres and resin, in which second region the at least one hole is located. All layers of fibres and resin are continued into the second region.Aerospace Engineerin
Spectral rehomogenization of cross sections for pin-by-pin nodal diusion calculations
No full textEquivalent cross sections used in few-group nodal diffusion calculations are ob- tained through homogenization of fossile unit cells under infinite medium con- ditions. Reference reaction rates can be accurately reproduced in nodal calcu- lations provided that these unit cells are surrounded by cells of the same type. Large heterogeneities, however, invalidate this approach and lead to cross sec- tion errors up to 15 %. The spectral rehomogenization method, developed at AREVA NP, has provided adequate error reductions in calculations employing assembly-level homogenization by imposing cross section corrections based on spectrum variation reconstruction using nodal calculation output. In the present thesis the spectral rehomogenization method is validated and its feasibility as- sessed in two-group pin-by-pin nodal diffusion calculations. It is found that significant cross section error reductions can be achieved, as well as reductions in errors related to the pin power distribution. However, improvements to the method are necessary in highly heterogeneous media to ensure adequate error reductions in group cross sections associated with fast and epithermal neutrons. Additionally, large errors may be introduced as a consequence of inconsistencies in the present implementation.Applied SciencesRST/Radiation, Science and Technolog
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