Relevant bibliographies by topics / Hollow Cored

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Hollow Cored'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Hollow Cored"

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Gandhidasan, P., and K. N. Ramamurthy. "Thermal behaviour of hollow-cored concrete slabs." Applied Energy 19, no. 1 (1985): 41–48. http://dx.doi.org/10.1016/0306-2619(85)90038-8.

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Issa, Nader, Alexander Argyros, Martijn van Eijkelenborg, and Joseph Zagari. "Identifying hollow waveguide guidance in air-cored microstructured optical fibres." Optics Express 11, no. 9 (May 5, 2003): 996. http://dx.doi.org/10.1364/oe.11.000996.

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Arbelo, Yunieski, and Davide Bleiner. "Induction spectrometry using an ultrafast hollow-cored toroidal-coil (HTC) detector." Review of Scientific Instruments 88, no. 2 (February 2017): 024710. http://dx.doi.org/10.1063/1.4975402.

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Stagni, L. "Effective transverse elastic moduli of a composite reinforced with multilayered hollow-cored fibers." Composites Science and Technology 61, no. 12 (September 2001): 1729–34. http://dx.doi.org/10.1016/s0266-3538(01)00071-9.

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Engblom, John J., and Zhiyin Zheng. "Characterizing Stiffness and Strength Properties of Glass-Fiber Reinforced, Hollow-Cored Recycled Plastic Extrusions." Journal of Reinforced Plastics and Composites 19, no. 16 (November 2000): 1317–28. http://dx.doi.org/10.1106/h12e-6u6j-h7xl-dx5g.

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Orie, O., and B. Idolor. "Optimizing Compression Zone of Flanged Hollow Cored Concrete Beams Using Moment of Inertia Theory." Nigerian Journal of Technology 34, no. 2 (March 29, 2015): 217. http://dx.doi.org/10.4314/njt.v34i2.1.

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Mihăilescu, Dănuţ, Marius Cornel Gheonea, and Bogdan Georgescu. "Determining the Coefficients of Fusion and of Weld Deposition at Mechanized Mag-C Welding with Solid Wire and Cored Wires." Applied Mechanics and Materials 657 (October 2014): 301–5. http://dx.doi.org/10.4028/www.scientific.net/amm.657.301.

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In the case of the MAG welding of carbon and low-alloyed steels wires or hollow wires with (rutilic or basic) flux with metallic powder or self-protection are used. In indoors weldings huge quantities of smoke, gases, dust and particles in suspension, etc. get accumulated. These noxious substances produced during the welding process may severely affect the welders health. To improve the welders working conditions, on an international scale, the following are used: welding masks with self-obscurazation and air control; noxious substances vacuum cleaners fitted with filters; MAG welding pistols with gase and smoke absorbing devices. For the improvement of the welders working conditions, producers of welding materials invented hollow wires with (rutilic flux or with metallic powder) with a smoke-reduced emission [1,2,3,4,5].
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Pan, Chun Xu, Ling Min Liao, and Ya Li Hu. "Functions and Morphology of Metal Lead Addition to Ancient Chinese Bronzes." Advanced Materials Research 26-28 (October 2007): 523–26. http://dx.doi.org/10.4028/www.scientific.net/amr.26-28.523.

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The typical morphology of metal lead (Pb) in ancient bronzes made in the Spring-Autumn Warring States Period (770 B.C. –221 B.C.), China, was examined by using electron microscopic techniques. We propose that the main purposes for adding metallic Pb in a large quantity into ancient bronzes such as arrows and ritual vessel-Ding were for increasing weight and economical reasons. SEM observations from the fracture surface of the bronzes revealed that the Pb particle possessed a “hollow–cored bubble” structure, which was formed due to absorbing casting gases during solidification and therefore indirectly eliminated the casting porosity and loosen.
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Werner, Patricia A., and Lynda D. Prior. "Tree-piping termites and growth and survival of host trees in savanna woodland of north Australia." Journal of Tropical Ecology 23, no. 6 (October 29, 2007): 611–22. http://dx.doi.org/10.1017/s0266467407004476.

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Most trees in the eucalypt savannas of Australia have hollow cores, or pipes, caused by termite activity, yet little is known about their effect on tree growth or survival. Five hundred and forty-one trees with known growth and survival histories were cored to determine pipe diameters in wooded savanna of Kakadu National Park, north Australia. Generalized linear modelling and multi-model inference was used to analyse frequency and degree of piping relative to initial tree diameter at breast height (dbh), eco-taxonomic group or species of eucalypt. Growth (dbh increment) and survival (4 y) were analysed relative to initial tree size, pipe ratio (pipe diameter:dbh) and eco-taxonomic group. The frequency of piping was strongly dependent on dbh, increasing with size of tree, and was highest in eucalypts. Growth and survival of eucalypts increased with tree diameter and decreased with pipe ratio. For example, from modelled data, 10-cm-diameter trees without pipes grew 0.14 cm y−1 with 85% survival vs. 10-cm trees with pipe ratios of 0.60 which had near-zero growth and only 46% survival. Comparing 40-cm-diameter trees without pipes to those having pipe ratios of 0.80, growth was 0.22 vs. 0.05 cm y−1, with little difference in survival, 97–99%, respectively. Contrary to the suggestion that tree hollows are an adaptive trait whereby trees benefit by the release of nutrients, in the north Australian eucalypt savannas the net effect of termite piping on individual tree growth and survival was negative.
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Clarke, Robin E., Bahman Shabani, and Gary Rosengarten. "Thermal analysis of a non-homogeneous insulating panel." Journal of Building Physics 42, no. 1 (July 3, 2017): 16–37. http://dx.doi.org/10.1177/1744259117716985.

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This article describes heat flow meter measurements and transient thermal modelling (using ANSYS) of a webbed, hollow-cored panel located between silicone sponge buffer materials chosen to provide boundary conditions comparable to standard surface coefficients. Panel surface temperatures were also measured at eight locations to record the thermal measurement as a temperature step function following isothermal stabilization. An uninsulated configuration was studied as well as cases with different levels of bulk insulation filling the panel cores. Measured and modelled temperature–time plots agreed well after corrections for web and airspace thermal conductivity. Modelled spatial variation in heat flow exceeded 200% for one insulated case but was only about 2% for the uninsulated panel. Modelled values for heat flux and overall thermal resistance agreed well with standard analytical calculations. However, heat flows indicated by the apparatus were consistently higher than the modelled and calculated values by up to 8%, expected to be due at least partially to specimen non-homogeneity. Nevertheless, results suggest a useful role for the apparatus in providing temperature measurement under controlled conditions, helping to validate thermal modelling as a potential alternative to hot box measurement for non-homogeneous assemblies.
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Dissertations / Theses on the topic "Hollow Cored"

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Yu, Fei. "Hollow core negative curvature fibres." Thesis, University of Bath, 2013. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648936.

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Hollow core fibre (HCF) is a type of novel optical fibre which has lower refractive index in the hollow core than in the cladding. Total internal reflection (TIR) cannot explain the confinement of light to the core of a HCF. According to the confinement mechanism, the HCFs can be generally divided into hollow core photonic bandgap fibres and hollow core leaky mode fibres depending on their optical properties of the cladding structure. Hollow core negative curvature fibre (HC-NCF) is a kind of hollow core leaky mode fibre, which is defined by the negative curvature of the core boundary. This thesis presents my study of HC-NCFs over the last two years. My research has focused on developing low loss silica HC-NCFs and exploring the attenuation limit of HC-NCFs. Fifty different HC-NCFs were fabricated, which covered the spectral range from 800 nm to 4.5 μm. Minimum attenuations of 24.4 dB/km and 85 dB/km were measured at around 2400 nm wavelength and 4000 nm respectively, which are the best achieved in HCFs at these wavelengths to the best of my knowledge. The limits of HC-NCF attenuation were revealed by analysing the data from HC-NCFs scaled for minimum attenuation in different spectral regions. Other properties of HC-NCFs, including bending loss and dispersion, were also studied experimentally. By using white light interferometery, a low group velocity dispersion (GVD) was found in HC-NCFs, which agrees well with simulations. The bending loss of HC-NCFs was preliminarily studied by measuring the transmission spectra under different bending conditions. Significant bending loss was found when the bending radius was less than 15 cm. Numerical simulations were performed using COMSOL software to study the properties of HC-NCFs. In the simulations, it was found that the capillary thickness is the most important factor determining the attenuation of HC-NCFs. These results were used to explain the experimental results. This thesis is comprised of seven chapters. Chapter 1 and 2 supply background material that helps to understand the light guidance mechanism of HC-NCFs. My original work is presented in Chapter 3, 4, 5, and 6. Chapter 7 includes a summary and suggestions for future work.
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Forsberg, Frans. "Gas Analysis using Hollow-Core Optical Fibers." Thesis, KTH, Tillämpad fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-231924.

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Liu, Fangzhou. "Dynamic analysis of hollow core concrete floors." Licentiate thesis, KTH, Bro- och stålbyggnad, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-224778.

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Chu, Yiwen. "Loading rubidium atoms into a hollow core fiber." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40904.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2007.
Includes bibliographical references (p. 71-73).
We demonstrate a procedure for cooling, trapping, and transferring rubidium atoms into a hollow core photonic band gap fiber. The atoms are first collected in a magneto-optical trap (MOT) and then cooled using polarization gradient cooling. Magnetic traps are then used to confine and transfer the atoms toward the face of the fiber. An optical dipole trap formed using laser light propagating through the fiber guide the atoms and confine them away from the fiber walls. We hope to use this system to achieve large optical depths with possible applications to quantum computing.
by Yiwen Chu.
S.B.
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Yin, Dongliang. "Integrated hollow core waveguide devices for optical sensing applications /." Diss., Digital Dissertations Database. Restricted to UC campuses, 2006. http://uclibs.org/PID/11984.

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Paine, Kevin Andrew. "Steel fibre reinforced concrete for prestressed hollow core slabs." Thesis, University of Nottingham, 1998. http://eprints.nottingham.ac.uk/11095/.

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An investigation of prestressed concrete containing steel fibres as secondary reinforcement to improve performance in shear, flexure and bond is reported. Emphasis is placed on the use of steel fibres in prestresssed extruded hollow core slabs, since these common precast elements have intrinsic difficulty in incorporating traditional secondary reinforcement due to their unique shape and manufacturing method. Two separate studies were carried out. The first study involved laboratory investigations into the bond between fibre reinforced concrete (FRC) and the prestressing strand, and the shear behaviour of laboratory-cast prestressed fibre reinforced concrete (PFRC) beams. The second part involved the factory production of fibre reinforced hollow core slabs in co-operation with a local manufacturer. The fibre reinforced hollow core slabs were subjected to conventional full-width shear tests, concentrated load shear tests, and to transverse flexure. For all laboratory cast elements, cubes, cylinders and prisms were cast to investigate compressive, tensile and flexural properties, respectively. Two types of steel fibre were investigated: hooked-end steel fibres at fibre volume fractions (Vf) of 0.5%, 1.0% and 1.5%; and amorphous metal fibres at Vf‘s of 0.28% and 0.56%. The trial production of fibre reinforced hollow core slabs necessitated the investigation of the effect of steel fibres on the extrusion manufacturing process. It was shown that fibre reinforced hollow core slabs could be adequately compacted with only slight increases in mixing water. Fibres were found to distribute randomly throughout the cross-section. However, the rotation of the augers affected the orientation of fibres, with fibres tending to align vertically in the web. It was shown that the addition of steel fibres to prestressed concrete has a negative effect on the bond between matrix and tendon, leading to longer transfer lengths. The effect of the increase in transfer length was to reduce cracking shear strengths by 4%. Shear tests showed that the incorporation of steel fibres could increase shear strength by as much as 45% for Vf = 1.5%. This increase in shear strength, known as the fibre contribution, was shown to be due to fibres bridging across the crack and an increased compressive resistance due to fibres arresting the propagation of cracks into the compressive zone. A semi-empirical equation for shear strength of PFRC elements is developed. It is given in two forms, one compatible with the present equations for prestressed concrete given in BS 8110 and Eurocode 2, and a second form compatible with that advocated for fibres in reinforced concrete. The equation makes use of equivalent flexural strength which is recognised as the most useful material property for design of FRC. The equation was found to give good correlation with the shear strength of single web beams cast both in the laboratory and under factory conditions. However, a overall strength reduction factor is required for full-width hollow core slabs to account for uneven load distribution and inconsistent web widths. This is consistent with tests on plain hollow core slabs found in the literature.
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Abokhamis, Mousavi Seyed Mohammad. "Exploring optical nonlinearity in gas-filled hollow core fibre." Thesis, University of Southampton, 2018. https://eprints.soton.ac.uk/428037/.

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The growing need for novel light sources in variety applications increases the demand for laser sources operating in many different range of spectrum. Despite the success in development of mid-infrared (mid-IR) lasers, which are essential in many applications such as: environmental science, bio-science and physics, there are still lack of reliable lasers in this range with existing fibre laser technology compatibility. Meanwhile the nonlinearity in gases has been explored extensively from the very beginning of nonlinear optics, however, new developments in pulsed lasers and fibre design provide opportunities for more applications. The introduction of Hollow Core Photonic Crystal Fibres (HC-PCF) has revolutionised the area of nonlinearity in gaseous media by offering a single-mode confined light beam for very long distances. In this thesis, the focus was on mid-IR pulse generation by Raman frequency conversion in a gas-filled HC-PCF. Due to reliable performance and compatibility of fibre lasers with HC-PCFs, and towards fully fiberized source, an erbium-doped fibre laser (1.55 μm) has been selected as the pump for this project. In order to reach as far as possible into the mid-IR region, hydrogen has been selected as the filling gas of fibre, due to its large frequency shift and high Raman gain. The large frequency shift and mid-IR operating range required a new fibre design with a broadband transmission window and relatively low loss in mid-IR. After studying conventional HC-PCF structures, the recently proposed Nested Anti-resonant Nodeless Fibre (NANF) has been selected as the most suitable option for the purpose of this thesis [71]. Two NANFs, made of silica and tellurite, have been designed and optimized through the use of the developed Finite Element Method (FEM) toolbox in this thesis for operating wavelengths at pump (1.55 μm) and 1st Stokes (4.35 μm). A novel design has also been introduced in NANFs which shows polarization maintaining feature as good as the latest state-of-the-art HC-PBGF type [77]. The proposed design also shows polarizing capability in addition to its polarization maintaining by presenting a large loss ratio (~30 dB) between different polarizations of propagating light through it. The pulse propagation throughout the hydrogen-filled NANFs has been investigated by modelling the Raman response of hydrogen and numerically solving the Generalized Nonlinear Schrödinger Equation (GNLSE). Simulations show promising results for frequency conversion towards mid-IR and the possibility of Raman lasers in this region by considering different gas and using the readily available air in HC fibres. Furthermore, in this work, the nonlinear dynamics of atmospheric air-filled HC fibres have been studied, ranging from Raman down conversion process to a high spectral power density supercontinuum spanning from 850 to 1600 nm. A semi-quantum model for air has been adopted and integrated into the GNLSE, which surpasses the limitations of simple model. Using the adopted model, the experimental results have been reproduced without any extra computational cost. A rigorous study has been performed on nonlinear dynamics of pulse propagation in air-filled HC fibres and the origin of many nonlinear phenomenon are identified.
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Love, Adrian. "Hollow core optical fibre based gas discharge laser systems." Thesis, University of Bath, 2018. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760983.

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The humble electrically pumped gas laser has undergone little development in its fifty year life span due to the lack of an effective method to confine light within a hollow waveguide of any appreciable length in which an electrical discharge could be contained. New technologies in the field of anti-resonant guiding hollow core fibres present an opportunity to re-invent the gas laser. A recent breakthrough in the field demonstrated that DC pumped glow discharges of a helium and xenon gas mixture could not only be sustained in such a fibre, but also exhibited signs of gain on a number of mid-IR neutral xenon laser lines. The research presented in this thesis is a continuation of that project. The system was redesigned to incorporate two mirrors so that a cavity could be constructed. The previously hinted at gain on the 3:51 μm xenon line was confirmed through a series of CW measurements of the cavity, as was a polarisation of the laser due to a polarisation dependent output coupler. Further observation of the discharges revealed that they were of a pulsed nature, and that the mid-IR laser light was present in the discharge afterglow. A response to the cavity mirrors was observed in this afterglow pulse on the 3:11 and 3:36 μm xenon lines in addition to the 3:51 μm line previously seen. Through fast detection a modulation of the output power due to cavity mode beating effects was detected. The high gain and narrow bandwidth of the xenon laser lines resulted in a frequency pulling effect, and the mode separation in the 'hot' laser cavity was measured to be lower than in the 'cold' cavity. It was observed through pressure optimisation experiments in helium-xenon that higher output powers could be achieved by using lower partial pressures of xenon. This was exploited with neon-xenon mixtures, where the lower ionisation potential of neon allowed a lower pressure of xenon. Discharges were also achieved in helium-neon and argon gas mixtures.
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Sandoghchi, Seyed Reza. "Characterisation of imperfections in hollow core photonic bandgap fibres." Thesis, University of Southampton, 2016. https://eprints.soton.ac.uk/419065/.

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Over the past decades, the performance of standard single-mode fibre (SSMF) has improved to the point that limited scope now exists for significant further reductions in loss and nonlinearity, which determine the fibre’s transmission capacity. Given the current 40% per annum growth in data traffic, and the fact that state-of-the-art data transmission experiments are operating close to the fundamental information-carrying limit of SSMF, there is strong interest in developing radically new fibres capable of much higher data carrying capacity. Recently, a potentially disruptive new type of fibre, the hollow-core (HC) photonic bandgap fibre (PBGF), has emerged as a credible candidate. It guides light predominantly (i.e. ~99%) in air, providing a unique set of optical properties such as ultralow nonlinearity, ultimate low signal latency, and the potential for lower loss compared to SSMF. However, to enable the application of HC-PBGFs for data transmission, the fabrication of long lengths of uniform, low-loss HC-PBGFs is essential, which had not been possible until recently. Despite empirical observations of high loss section along HCPBGFs and of more frequent fibre breaks than in conventional fibres were known, very little was known about the root cause of these issues at the start of this PhD project. The investigation of the problems preventing the fabrication of long length of uniform, defect free HC-PBGF is the topic of this thesis. I developed and/or applied a suite of characterisation methods, such as IR side-scatter imaging, X-ray tomographic analysis and optical side scattering radiometry, aimed at identifying defects and imperfections that arise in HC-PBGFs. Through these techniques, I studied the morphology and longitudinal evolution (e.g. formation, stabilisation and decay) of such defects, the first systematic study of this kind for HC-PBGFs. Furthermore I could backtrack their origin to well defined stages in the fabrication (e.g. preforms and canes). My observations suggest that all or at least most defects arise due to contamination or stacking errors, which are unintentionally introduced when the HC-PBGF preforms are assembled from arrays of glass capillaries. Ultimately, the methods I have developed and the findings described in this PhD Thesis helped develop ways to greatly reduce (and hopefully, in future, completely eliminate) these defects, which resulted in several breakthroughs including the achievement of the current record length of low loss HC-PBGF, i.e., a 11km long fibre with a uniform 5.2dB/km loss and more than 200nm transmission bandwidth, a factor of 10 longer length than what had been reported before the start of this project.
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Cordier, Martin. "Photon-pair generation in hollow-core photonic-crystal fiber." Thesis, Université Paris-Saclay (ComUE), 2019. http://www.theses.fr/2019SACLT024/document.

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Les sources de paires de photons sont un composant essentiel des technologies émergentes en information quantique. De nombreux travaux ont permis des avancées importantes utilisant des processus non linéaires d'ordre 2 dans les cristaux et les guides d'ondes, et d'ordre 3 dans les fibres. Les limitations viennent dans le premier cas, des pertes et en particulier des pertes de couplage avec les fibres optiques et dans le second cas, du bruit dû à l'effet Raman dont le spectre est très large dans les fibres de silice. Ce projet propose une nouvelle architecture basée sur des fibres à cristal photonique à coeur creux (FCPCC) que l'on peut remplir de liquide ou de gaz non linéaire. Cette configuration permet la génération paramétrique de paires de photons corrélés par mélange à quatre ondes sans l'inconvénient de la diffusion Raman. Cette technologie offre une large gamme de paramètres à explorer en s'appuyant sur les propriétés physiques et linéaires contrôlables des FCPCC et la possibilité de remplissage de ces fibres avec des fluides aux propriétés non-linéaires variées. En effet, par une conception judicieuse de la FCPCC et un choix approprié du liquide ou du gaz, il est possible de (i) contrôler la dispersion et la transmission pour générer des photons corrélés sur une large gamme spectrale avec la condition d'accord de phase la plus favorable, (ii) d'ajuster la taille de coeur de la fibre et/ou sa forme pour augmenter sa non-linéarité ou son efficacité de couplage avec d'autres fibres et (iii) de s'affranchir totalement de l'effet Raman si on utilise par exemple un gaz monoatomique, ou d'obtenir des raies Raman fines, aisément discriminables des raies paramétriques dans le cas d'un liquide
Photon pair sources are an essential component of the emerging quantum information technology. Despite ingenious proposals being explored in the recent years based on either second order nonlinear processes in crystals and waveguides or on third order processes in fibers, limitations remain, due to losses and specifically coupling losses in the former case and due to Raman generation in silica, giving rise to a broad spectrum noise in the latter. These limitations have been challenging to lift because of the limited alternative nonlinear materials that fulfil the conditions for the generation of bright and high fidelity photon pairs in integrable photonic structures. In the present project, we develop a new and versatile type of photonic architecture for quantum information applications that offers access to a variety of nonlinear optical materials that are micro-structured in optical fiber forms to generate photon pairs, without the drawback of Raman scattering and with a large design parameter-space. Indeed, with a careful design of the HCPCF along with the appropriate choice of fluid, one can (i) control the dispersion and the transmission to generate photons with the most favourable phase-matching condition over a large spectral range, (ii) adjust the fibre core size and/or shape to enhance nonlinearity or the coupling efficiency with other fibres, (iii) totally suppress the Raman effect in monoatomic gases for instance or have only narrow and separated Raman lines that can thus be easily separated from the useful parametric lines in liquids
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Books on the topic "Hollow Cored"

1

The hollow core. London: Orion, 2006.

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Horton, Lesley. The hollow core. Long Preston: Magna Large Print Books, 2007.

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Buettner, Donald R. PCI manual for the design of hollow core slabs. 2nd ed. Chicago, Ill: Prestressed Concrete Institute, 1998.

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Buettner, Donald R. PCI manual for the design of hollow core slabs. Chicago, Ill: Prestressed Concrete Institute, 1985.

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Love, Adrian. Hollow Core Optical Fibre Based Gas Discharge Laser Systems. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-93970-4.

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Pajari, Matti. Shear resistance of prestressed hollow core slabs on flexible supports. Espoo, Finland: Technical Research Centre of Finland, 1995.

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Mazzone, Graziano. The shear response of precast, pretensioned hollow-core concrete slabs. Ottawa: National Library of Canada, 1996.

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Abdul-Aziz, Ali. Thermal and structural analysis of a hollow core Space Shuttle Main Engine (SSME) turbine blade. [Washington, DC]: National Aeronautics and Space Administration, 1995.

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The 2006-2011 World Outlook for Solid and Hollow Cored Slabs and Panels. Icon Group International, Inc., 2005.

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Parker, Philip M. The 2007-2012 World Outlook for Solid and Hollow Cored Slabs and Panels. ICON Group International, Inc., 2006.

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Book chapters on the topic "Hollow Cored"

1

Weller, Patrick. "Political Parties and the Core Executive." In The Hollow Crown, 37–57. London: Palgrave Macmillan UK, 1997. http://dx.doi.org/10.1007/978-1-349-25870-3_3.

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Papailiou, Konstantin, and Frank Schmuck. "Composite Hollow Core Insulators." In Silicone Composite Insulators, 165–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-15320-4_6.

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White, Joe, and Hamish McKenzie. "Seismic Strengthening of the Majestic Centre, Wellington, New Zealand." In Case Studies on Conservation and Seismic Strengthening/Retrofitting of Existing Structures, 95–126. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2020. http://dx.doi.org/10.2749/cs002.095.

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<p>The Majestic Centre is a 30-storey office tower in the centre of Wellington, New Zealand. The structure has a dual lateral system (reinforced concrete (RC) moment frame + shear cores) and hollow-core floors. The building’s assessed seismic performance was found to be below expected levels, leading to a strengthening exercise. Over a period of 5 years, the structures performance was raised to meet current seismic loading requirements, at a cost of €50M.</p>
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Mehandiratta, Mayank, and Praveen Kumar. "Behaviour of Hollow Core Concrete Slabs." In Algorithms for Intelligent Systems, 357–62. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-6707-0_34.

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Abu Hassan, Muhammad Rosdi. "Fabrication of Negative Curvature Hollow Core Fiber." In Handbook of Optical Fibers, 1–21. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-10-1477-2_75-1.

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Abu Hassan, Muhammad Rosdi. "Fabrication of Negative Curvature Hollow Core Fiber." In Handbook of Optical Fibers, 529–49. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-10-7087-7_75.

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Lavacchi, Alessandro, Hamish Miller, and Francesco Vizza. "Monolayer Decorated Core Shell and Hollow Nanoparticles." In Nanostructure Science and Technology, 251–72. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4899-8059-5_9.

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Mitchell, W. J. "A Hollow Shell: Covering Lemmas without a Core." In Set Theory, 183–98. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-015-8988-8_12.

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Yousefzadeh, Maryam, and Farzaneh Ghasemkhah. "Design of Porous, Core-Shell, and Hollow Nanofibers." In Handbook of Nanofibers, 1–58. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-42789-8_9-1.

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Yousefzadeh, Maryam, and Farzaneh Ghasemkhah. "Design of Porous, Core-Shell, and Hollow Nanofibers." In Handbook of Nanofibers, 1–58. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-42789-8_9-2.

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Conference papers on the topic "Hollow Cored"

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Sato, Shunichi, Tsunenori Arai, Yi-Wei Shi, Yuji Matsuura, Mitsunobu Miyagi, and Hiroshi Ashida. "Vacuum-cored hollow waveguide for high-energy high-intensity laser transmission and its application to biological tissue ablation." In BiOS 2000 The International Symposium on Biomedical Optics, edited by Tuan Vo-Dinh, Warren S. Grundfest, and David A. Benaron. SPIE, 2000. http://dx.doi.org/10.1117/12.384917.

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Pessoa, Ezequiel C. P., Alexandre Q. Bracarense, and Stephen Liu. "Exothermic Additions in a Tubular Covered Electrode and Oxidizing Reactions Influence on Underwater Wet Welding." In ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29734.

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Abstract:
During Underwater Wet Welding (UWW), the water that surrounds the arc decomposes liberating large amount of hydrogen and oxygen. As a consequence of the presence of these gases in the arc atmosphere and weld pool, porosity in the weld metal occurs. In the past years, many research programs had been carried out with the objective to reduce or eliminate porosity in wet welds. A simple way to accomplish this goal is using chemical elements or ingredients to promote or avoid certain chemical reactions in the weld pool. In conventional stick (shielded metal arc - SMA) electrodes, it is possible to add alloying elements or other ingredients through the external covering. A tubular covered electrode (TCE) (a hybrid process between SMA and flux cored arc - FCA welding) allows the addition of reactive elements in the hollow rod, separate from the other ingredients used in the flux covering. This way, it is possible to use exothermic elements, placed inside the tube, to control the oxidation reactions, but limiting these reactions to the arc plasma and in the weld pool. Exothermic additions in welding consumables can promote desirable oxidation reactions, change the metal transfer mode, reduce the cooling rate, and decrease the electrical dependence of the welding process. Theoretically, the application of flux cored shielded metal arc (FC-SMA) welding with exothermic additions will permit better control the weld metal composition and reduce the porosity in wet welds. This paper describes underwater wet welding with tubular covered electrodes that contain exothermic additions such as (CaC2) and aluminum (A1), and the influence of these ingredients on weld metal composition and porosity.
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Oh, Kyunghwan. "Hollow Annular Core Fibres." In Workshop on Specialty Optical Fibers and their Applications. Washington, D.C.: OSA, 2015. http://dx.doi.org/10.1364/wsof.2015.wf2a.2.

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Wilson, S. J. "Hollow Core Glass Waveguides." In Hague International Symposium, edited by Jacques Lucas. SPIE, 1987. http://dx.doi.org/10.1117/12.941148.

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Roberts, P. J. "Birefringent hollow core fibers." In Asia-Pacific Optical Communications. SPIE, 2007. http://dx.doi.org/10.1117/12.754405.

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Komanec, Matej, Dmytro Suslov, Daniel Dousek, Ailing Zhong, Stanislav Zvanovec, Thomas D. Bradley, Francesco Polleti, David J. Richardson, and Radan Slavik. "Interconnecting hollow-core fibers." In 2021 IEEE Photonics Society Summer Topicals Meeting Series (SUM). IEEE, 2021. http://dx.doi.org/10.1109/sum48717.2021.9505978.

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Russell, P. St J. "Hollow-core photonic crystal fibres." In 2012 Opto-Electronics and Communications Conference (OECC). IEEE, 2012. http://dx.doi.org/10.1109/oecc.2012.6276543.

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West, J. A., E. M. Kosik Williams, and K. W. Koch. "Microstructured hollow-core rib waveguides." In 2008 Conference on Lasers and Electro-Optics (CLEO). IEEE, 2008. http://dx.doi.org/10.1109/cleo.2008.4551917.

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Wadsworth, William J., Adrian L. Love, and Jonathan C. Knight. "Hollow-core Fiber Gas Lasers." In Workshop on Specialty Optical Fibers and their Applications. Washington, D.C.: OSA, 2015. http://dx.doi.org/10.1364/wsof.2015.wt1a.1.

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Perrella, C., J. Anstie, P. Light, F. Benabid, A. G. White, and A. N. Luiten. "Hollow-core fibre frequency standard." In 2014 IEEE International Frequency Control Symposium (FCS). IEEE, 2014. http://dx.doi.org/10.1109/fcs.2014.6859855.

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Reports on the topic "Hollow Cored"

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McDermott, Matthew R. Shear Capacity of Hollow-Core Slabs with Concrete Filled Cores. Precast/Prestressed Concrete Institute, 2018. http://dx.doi.org/10.15554/pci.rr.comp-002.

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Hansen, P. VLF Cutler Hollow Core Cable Repair/Replacement. Fort Belvoir, VA: Defense Technical Information Center, December 1994. http://dx.doi.org/10.21236/ada290741.

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Schmidt, Holger, Aaron R. Hawkins, Bin Wu, and John F. Hulbert. Single-Photon Nonlinear Optics in Integrated Hollow-Core Waveguides. Fort Belvoir, VA: Defense Technical Information Center, October 2010. http://dx.doi.org/10.21236/ada563376.

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Corwin, Kristan L., Brian R. Washburn, Wolfgang Rudolph, Vasudevan Nampoothiri, and Fetah Benabid. Gas-Filled Hollow Core Fiber Lasers Based on Population Inversion. Fort Belvoir, VA: Defense Technical Information Center, December 2013. http://dx.doi.org/10.21236/ada593591.

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Chang-Hasnain, Constance, Ming Wu, and Eli Yablonovitch. Ultra-Low Loss, Chip-Based Hollow-Core Waveguide Using High-Contrast Grating. Fort Belvoir, VA: Defense Technical Information Center, September 2011. http://dx.doi.org/10.21236/ada554981.

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Weiss, Jonathan David. Hollow core and other infrared waveguides for instrumentation in intense radiation environments. Office of Scientific and Technical Information (OSTI), November 2007. http://dx.doi.org/10.2172/1029799.

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Fitterer, Miriam, Giulio Stancari, and Alexander Valishev. Effect of pulsed hollow electron-lens operation on the proton beam core in LHC. Office of Scientific and Technical Information (OSTI), November 2016. http://dx.doi.org/10.2172/1408326.

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Mones, Ryan M., and Sergio F. Breña. Flexural and Shear Strength of Hollow-core Slabs with Cast-in-place Field Topping. Precast/Prestressed Concrete Institute, 2012. http://dx.doi.org/10.15554/pci.rr.comp-008.

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