cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
n-Type Hydrogenated Amorphous Silicon Oxide Containing a Microcrystalline Silicon Phase as an Intermediate Reflector in Thin-Film Silicon Solar Cells
Creators: name: Lambertz, A.
name: Grundler, T.
name: Finger, F.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2402-2407
description: To decrease the degree of degradation of a-Si:H/μc-Si:H tandem solar cells it is important to reduce
the thickness of the a-Si:H component cell. A silicon oxide intermediate reflector between top and bottom cell
reflects light back into the a-Si:H top cell and thus increases its photocurrent. Phosphorous doped silicon oxide films
(a-SiOx:H ) with a certain volume fraction of microcrystalline silicon (μc-Si:H ) are used for this purpose and
the trade-off between the material’s optical and electrical properties is studied in detail. Intermediate reflectors with
different optical and electrical properties are used in tandem solar cells. The quantum efficiency and the reflectance
of these solar cells are analyzed to find optical gains and losses due to the intermediate reflector. A suitable
intermediate reflector is implemented in a tandem solar cell resulting in an increase in top cell current density by 1.3
mA/cm2 with similar FF and Voc compared to cells without intermediate reflector. A current 12.46 mA/cm² is
achieved at a top cell absorber layer thickness of only 250 nm. A reduction of the a-Si:H top cell of about 40% for a
stacked cell with intermediate reflector is possible while keeping the current of the device constant
Use of Inductively-Coupled-Plasma Measurements to Monitor Light-Induced Plating of Silicon Solar Cells
Creators: name: Yao, Y.
name: Lennon, A.
name: Tjahjono, B.S.
name: Wenham, S.R.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2682-2687
description: Although light-induced plating (LIP) of metal contacts is attractively simple, it is difficult to
directly measure parameters, such as the average plating current density, which are required if the plating
chemistry is to be optimised. In this paper we describe the use of inductively-coupled plasma (ICP) spectrometry
techniques to monitor LIP of laser-doped silicon solar cells. Simple laboratory plating arrangements and ICP
measurements were used to evaluate the average plating current density, the thickness of plated metal, the effect
of different anode configurations on the aluminium dissolution from the rear surfaces of the solar cells, and to
directly compare the kinetics of different plating solution chemistries. These measurements demonstrate the value
of ICP measurements as a general methodology for monitoring and characterising LIP processes.
A numerical framework for modelling tire mechanics accounting for composite materials, large strains and frictional contact
Creators: name: Cornejo, A.
name: Barbu, L.G.
name: P. Wriggers
name: Oller, S.
name: E. Oñate
Publisher: name: Zenodo
Year: 2023

description: Presentation delivered by Alejandro Cornejo from CIMNE during the 17th International Conference on Computational Plasticity, Fundamentals and Applications (COMPLAS) taking place from 5 – 7 of September in Barcelona, Spain.
description: The Fatigue4Light project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No. 101006844
Radiative transfer in cylindrical threads with incident radiation VII. Multi-thread models
Creators: name: Labrosse, N.
name: Rodger, A. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We solved the radiative transfer and statistical equilibrium equations in a two-dimensional cross-section of a cylindrical structure oriented horizontally and lying above the solar surface. The cylinder is filled with a mixture of hydrogen and helium and is illuminated at a given altitude from the solar disc. We constructed simple models made from a single thread or from an ensemble of several threads along the line of sight. This first use of two-dimensional, multi-thread fine structure modelling combining hydrogen and helium radiative transfer allowed us to compute synthetic emergent spectra from cylindrical structures and to study the effect of line-of-sight integration of an ensemble of threads under a range of physical conditions. We analysed the effects of variations in temperature distribution and in gas pressure. We considered the effect of multi-thread structures within a given field of view and the effect of peculiar velocities between the structures in a multi-thread model. We compared these new models to the single thread model and tested them with varying parameters. These new computations show, for the first time, the effect of integrating the radiation emitted in H and He lines by several cylindrical threads that are static or moving along the line of sight. They can be used to interpret high-spatial and spectral resolutions of cylindrical structures found in the solar atmosphere, such as cool coronal loops or prominence threads.
description: 18 pages, 17 figures, accepted in Astronomy & Astrophysics
The quest for an electric dipole moment of the neutron
Creators: name: Schmidt-Wellenburg, P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Until this day no electric dipole moment of the neutron (nEDM) has been observed. Why it is so vanishing small, escaping detection in the last 50 years, is not easy to explain. In general it is considered as the most sensitive probe for the violation of the combined symmetry of charge and parity (CP). A discovery could shed light on the poorly understood matter/anti-matter asymmetry of the universe. As nucleon it might one day help to distinguish different sources of CP-violation in combination with measurements of the electron and diamagnetic EDMs. This proceedings articles presents an overview of the most important concepts in searches for an nEDM and presents a brief overview of the world wide efforts.
description: 9 pages, 6 pictures, 2 tables, conference proceedings of the XI Latin American Symposium on Nuclear Physics and Applications in Medellin, Colombia
Deciphering the anthosphere and endosphere microbiome of wild Rosaceae plants for cold-adapted plant growth promoting bacteria
Creators: name: Malek, Marian
name: Milanese Irma
name: Livio, Antonielli
name: Ilaria, Pertot
name: Michele, Perazzolli
Publisher: name: Zenodo
Year: 2022
Subjects: Plant Microbiome; Alpine Region; Cold Stress; Rosaceae Plants; Psychrotolerant Bacteria; Plant Growth Promotion

description: .
LattesData: repositório de dados de pesquisa do CNPq
Creators: name: Junior, Rene Faustino Gabriel
name: Cunha, Dileine Amaral da
name: Silva, Tatyane Guedes Martins da
name: Segundo, Washington
Publisher: name: Zenodo
Year: 2023

description: Apresentação realizada na sessão "Pecha Kucha III" da 14ª Conferência Lusófona de Ciência Aberta, Natal Brasil, de 18 a 21 de setembro de 2023.
A Novel Efficiency of Industrial Screen Printed c-Si Solar Cells Using Phosphorous Diffusion Paste
Creators: name: Choi, J.-Y.
name: Shin, J.-E.
name: Lee, E.J.
name: Lee, H.W.
name: Kim, J.S.
name: Kim, I.H.
name: Oh, D.-J.
name: Shim, J.-M.
name: Cho, K.-Y.
name: Lee, S.-H.
name: Lee, H.S.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 2688-2691
description: This study used phosphorous diffusion paste 99-038 from Ferro Company to verify the productivity
and cost reduction. The experimental results have showed remarkable capabilities of diffusion paste. By the
comparable cell efficiency such as 17.4%, if it further improved the performance and process control, screen printed
emitter solar cells could be produced that represent over 18% efficiency with quite adequate firethrough condition
through low cost processes than current thermal diffusion. Moreover, some parts of general mass production line
should be designed simple if using diffusion paste with only a few high throughput inline printers and infrared
furnaces in the future.
Large Slowdown of Water Dynamics at Stacked Phospholipid Membranes for Increasing Hydration Level: All-Atoms Molecular Dynamics
Creators: name: Calero, Carles
name: Stanley, H. Eugene
name: Franzese, Giancarlo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Water hydrating phospholipid membranes determine their stability and function, as well as their interaction with other molecules. In this article we study, using all-atom molecular dynamics simulations, the rotational and translational dynamical properties of water molecules confined in stacked phospholipid membranes at different levels of hydration, from poorly hydrated to a completely hydrated membrane. We find that both the translational and the reorientation dynamics of water are dramatically slowed down as the hydration is reduced. Analyzing in details the structure and dynamics of the hydrogen bond at the interface, we show that both those among water molecules and those between water and lipids slow down by decreasing the hydration, however the latter are always slower than the former. By increasing hydration, water saturates all the possible hydrogen bonds with the lipids and, by further increase of hydration, the hydrogen bonds among waters becomes the majority. However, the dynamics of the water-lipids hydrogen bonds becomes up to one order of magnitude slower than that of the water-water hydrogen bonds, inducing a large slowing down of the dynamics of the entire system even at large hydration level.
High Throughput Inline Process for Deep Phosphorus Emitters
Creators: name: Blendin, G.
name: Faber, M.
name: Horzel, J.
name: Boubekeur, H.
name: Metz, A.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1372-1376
description: In this paper we show that the high throughput inline diffusion process developed by
SCHOTT Solar offers the possibility to realize phosphorous diffusion drive-in times up to 100 min with a
throughput of more than 3200 Wafer/h with only one equipment set. The temperature and time profiles of
the drive-in diffusion have been varied in a wide range for this inline diffusion process. On
multicrystalline material solar cell results show an efficiency gain of 0.35% abs. compared to the shortest
studied diffusion profile of the experiment. The improvement can be attributed to higher open-circuit
voltage Voc and higher fill factor FF. The higher Voc values are due to the optimized emitter profile caused
by the longer diffusion duration at lower temperature. The higher FF can be explained by the higher
pseudo fill factor pFF values which are caused by the higher depth of the profile. A minimum depth of
Phosphorous profile is needed to prevent impurities of the Ag paste penetrating into the space charge
region and reducing the FF and pFF. We show results that the minimal depth of the emitter differs for two
tested Ag pastes.
Thin-Film Silicon Manufacturing, Performance, and Process Development at EPV Solar
Creators: name: Jansen, K.W.
name: Stavrides, A.
name: Guo, S.
name: Xu, Y.
name: Cambridge, J.
name: Rodriguez, L.
name: Varvar, A.
name: Han, S.
name: Brazil, M.
name: Steiger, R.
name: Le, L.
name: Fabiano, P.
name: Hornbostel, B.
name: Kemper, F.
name: Delahoy, A.E.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2416-2420
description: To meet the projected market-demand for low-cost, high-performance PV modules, EPV SOLAR, Inc.
has increased the average rated power of its standard module by over 28% to 54W. Key factors in this increase were
the incorporation of a ZnO:Al/Al back reflector and a larger module size. To capture a larger market-share and to
further lower costs, two additional manufacturing facilities have been constructed and brought on-line to bring the
total EPV manufacturing capacity to 55 MW/yr. Diagnostic tools including non-destructive a-Si thickness mapping
and IR imaging of defects have been developed to improve process control and further increase module performance.
R&D efforts to increase performance have focused on improving the optical engineering of the device and the
development of an a-Si/nc-Si hybrid structure. Significant results include the demonstration of >4% increase in short
circuit current density through the use of a TiOx internal anti-reflective layer, and in collaboration with ENEA, a 9.9%
a-Si/nc-Si hybrid tandem fabricated on textured ZnO:Al, sputtered from a reactive-environment hollow cathode
sputtering source.
The Evolving Magnetic Topology of $τ$ Boötis
Creators: name: Mengel, M. W.
name: Fares, R.
name: Marsden, S. C.
name: Carter, B. D.
name: Jeffers, S. V.
name: Petit, P.
name: Donati, J. -F.
name: Folsom, C. P.
name: Collaboration, the BCool
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present six epochs of spectropolarimetric observations of the hot-Jupiter-hosting star $τ$ Boötis that extend the exceptional previous multi-year data set of its large-scale magnetic field. Our results confirm that the large-scale magnetic field of $τ$ Boötis varies cyclicly, with the observation of two further magnetic reversals; between December 2013 and May 2014 and between January and March 2015. We also show that the field evolves in a broadly solar-type manner in contrast to other F-type stars. We further present new results which indicate that the chromospheric activity cycle and the magnetic activity cycles are related, which would indicate a very rapid magnetic cycle. As an exemplar of long-term magnetic field evolution, $τ$ Boötis and this longterm monitoring campaign presents a unique opportunity for studying stellar magnetic cycles.
description: 20 Pages, 17 figures, accepted for publication in MNRAS
THE ROLE OF PUBLIC-PRIVATE PARTNERSHIPS IN EAC SUPPLY CHAIN DEVELOPMENT
Creators: name: Mbonigaba Celestin*, A. Dinesh Kumar** & M. Vasuki***
Publisher: name: Zenodo
Year: 2024

description: This research examines the pivotal role of Public-Private Partnerships (PPPs) in enhancing supply chain development within the East African Community (EAC) from July 2020 to June 2024. The study explores how PPPs have contributed to infrastructure improvements, trade facilitation, and economic growth across key sectors including agriculture, transportation, and healthcare. Through a mixed-methods approach, incorporating both qualitative and quantitative data, the research identifies significant outcomes such as a 14% increase in intra-regional trade and a 10% reduction in logistics costs. Case studies of successful PPPs illustrate the benefits and challenges of these collaborations, highlighting the need for clear legal frameworks, stakeholder engagement, and risk-sharing mechanisms. The findings underscore the transformative potential of PPPs in regional development while also addressing the barriers that have limited their full impact. This study offers valuable insights for policymakers and practitioners seeking to optimize the use of PPPs in the EAC, providing recommendations for strengthening regulatory harmonization, enhancing financial instruments, and fostering regional cooperation. Future research directions include exploring the integration of emerging technologies into PPP frameworks and assessing the long-term sustainability of these partnerships in supply chain development.
Slippage and boundary layer probed in an almost-ideal gas by a nano-mechanical oscillator
Creators: name: Defoort, M.
name: Lulla, K. J.
name: Crozes, T.
name: Maillet, O.
name: Bourgeois, O.
name: Collin, E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have measured the interaction between $^4$He gas at 4.2$~$K and a high-quality nano-electro-mechanical string device for its first 3 symmetric modes (resonating at 2.2$~$MHz, 6.7$~$MHz and 11$~$MHz with quality factor $Q > 0.1$ million) over almost 6 orders of magnitude in pressure. This fluid can be viewed as the best experimental implementation of an almost-ideal monoatomic and inert gas which properties are tabulated. The experiment ranges from high pressure where the flow is of laminar Stokes-type presenting slippage, down to very low pressures where the flow is molecular. In the molecular regime, when the mean-free-path is of the order of the distance between the suspended nano-mechanical probe and the bottom of the trench we resolve for the first time the signature of the boundary (Knudsen) layer onto the measured dissipation. Our results are discussed in the framework of the most recent theories investigating boundary effects in fluids (both analytic approaches and Monte-Carlo DSMC simulations).
description: Editor's suggestion
Operational Experience of Hybrid PV/Wind Systems in Rural Areas of Nothern Africa
Creators: name: Cabañero, M.
name: Rutz, D.
name: Janssen, R.
name: Papadakis, G.
name: Mohamed, E.S.
name: Kyriakarakos, G.
name: Kassem, A.-W.S.
name: Linares, A.
name: López-Manzanares, L.
name: Bard, J.
name: Panahandeh, B.
name: Outzourhit, A.
name: El Khazen, A.
name: Kyritsis, E.
name: Kyritsis, S.
Publisher: name: WIP
Year: 2011
Subjects: PV Systems
Off-grid Applications

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 4116-4120
description: Renewable Energy Hybrid systems are a sustainable energy source of electricity in remotes areas
of northern Africa which are far away from the public grid. Options to generate electricity in these areas are solar
home systems which often provide insufficient supply or diesel generators with operation cost increasing
considerably with the remoteness of the location. Hybrid renewable energy systems ensure sufficient and
continuous electricity supply in rural remote areas with reasonable cost. The aim of the HYRESS project
(Renewable Energy Systems for the Supply of Services in Rural Settlements of Mediterranean Partner Countries)
was to design, install, operate and monitor renewable hybrid systems in rural settlements in three North African
countries (Egypt, Tunisia and Morocco). This paper reports on the operational experience acquired with three
hybrid renewable energy systems and includes a comparison of the three systems regarding performance, social
acceptance as well as problems and challenges during the operation of the systems.
A coordinate ascent method for solving semidefinite relaxations of non-convex quadratic integer programs
Creators: name: Buchheim, Christoph
name: Montenegro, Maribel
name: Wiegele, Angelika
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We present a coordinate ascent method for a class of semidefinite programming problems that arise in non-convex quadratic integer optimization. These semidefinite programs are characterized by a small total number of active constraints and by low-rank constraint matrices. We exploit this special structure by solving the dual problem, using a barrier method in combination with a coordinate-wise exact line search. The main ingredient of our algorithm is the computationally cheap update at each iteration and an easy computation of the exact step size. Compared to interior point methods, our approach is much faster in obtaining strong dual bounds. Moreover, no explicit separation and reoptimization is necessary even if the set of primal constraints is large, since in our dual approach this is covered by implicitly considering all primal constraints when selecting the next coordinate.
War Diary of 1st Battalion Canadian Scottish Regiment, Vol. 70 - Appendix
Creators: name: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Canada. Canadian Army
valueUri: http://id.worldcat.org/fast/531187
subject: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
subject: World War (1939-1945)
valueUri: http://id.worldcat.org/fast/1180924
subject: War diaries
valueUri: http://id.worldcat.org/fast/1745536

description: This appendix consists of the June 22, 1945 edition of "The Wall Climber",and the June 8 and 22 1945 editions of "The Maple Leaf".
Non-signalling theories and generalized probability
Creators: name: Tylec, Tomasz I.
name: Kuś, Marek
name: Krajczok, Jacek
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81P45, 81P10, 03G12

description: We provide mathematicaly rigorous justification of using term "probability" in connection to the so called non-signalling theories,known also as Popescu's and Rohrlich's box worlds. No only do we prove correctness of these models (in the sense that they describe composite system of two independent subsystems) but we obtain new properties of non-signalling boxes and expose new tools for further investigation. Moreover, it allows strightforward generalization to more complicated systems.
description: 6 pages, 1 figure
MPEC 2023-S236 : 2023 SF7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 SF7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Time and position resolution of high granularity, high counting rate MRPC for the inner zone of the CBM-TOF wall
Creators: name: Petriş, M.
name: Bartoş, D.
name: Caragheorgheopol, G.
name: Deppner, I.
name: Frühauf, J.
name: Herrmann, N.
name: Kiš, M.
name: Loizeau, P-A.
name: Petrovici, M.
name: Rǎdulescu, L.
name: Simion, V.
name: Simon, C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Multi-gap RPC prototypes with readout on a multi-strip electrode were developed for the small polar angle region of the CBM-TOF subdetector, the most demanding zone in terms of granularity and counting rate. The prototypes are based on low resistivity ($\sim$10$^{10}$ $Ω$cm) glass electrodes for performing in high counting rate environment. The strip width/pitch size was chosen such to fulfill the impedance matching with the front-end electronics and the granularity requirements of the innermost zone of the CBM-TOF wall. The in-beam tests using secondary particles produced in heavy ion collisions on a Pb target at SIS18 - GSI Darmstadt and SPS - CERN were focused on the performance of the prototype in conditions similar to the ones expected at SIS100/FAIR. An efficiency larger than 98\% and a system time resolution in the order of 70~-~80~ps were obtained in high counting rate and high multiplicity environment.
description: 8 pages, 13 figures
Photovoltaic Powered Desalination and Pumping System Applied to Semi-Arid Areas
Creators: name: De Oliveira, R.S.H.
name: De Carvalho, P.C.M.
name: Filho, J.J.H.
name: De Carvalho, L.A.D.
Publisher: name: WIP
Year: 2011
Subjects: PV Systems
Off-grid Applications

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 4131-4135
description: This paper has as main goal to make a technical and financial viability study of a PV powered
desalination (reverse osmosis) and pumping system applied to semi-arid areas, developed at the Renewable Energies
Laboratory, Federal University of Ceará, in Fortaleza-Brazil, aiming to supply drinking water for human consumption
at low cost from brackish water in semi-arid areas. The research aims to determinate parameters like drinking water
production, specific energy consumption and costs, and determinate the optimal system size that provides a financial
viability. A set of batteries was used, allowing to conduct a comparative study between two configurations: with and
without batteries. The research was conducted with different levels of brackish water salinity, to identify a viability
limit. The technical and financial analysis show that the unit produces satisfactory and competitive results, comparing
with different plants in the world, concluding that, assuming a 2,748 mg/L brackish water well, the configuration that
brings the best cost/benefit is the batteryless plant using 3 photovoltaic panels, which provides a daily production of
175 liters of drinking water at 324.60 mg/L, with a specific consumption of 3.12 kWh/m3 and presenting a
competitive specific cost of 18.37 R$/m3 (7.65 €/m3).
War Diary of 1st Battalion Canadian Scottish Regiment, Vol. 68 - Appendix 09
Creators: name: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Canada. Canadian Army
valueUri: http://id.worldcat.org/fast/531187
subject: Canada. Canadian Army. Canadian Scottish Regiment (Princess Mary's)
subject: World War (1939-1945)
valueUri: http://id.worldcat.org/fast/1180924
subject: War diaries
valueUri: http://id.worldcat.org/fast/1745536

description: This appendix consists of a transcript of the first radio broadcast dated April 10, 1945 from acting Burgomaster of Deventer, H.J. Ankersmit, regarding liberation of the town of Deventer by Canadian troops.
Second harmonic light scattering induced by defects in the twist-bend nematic phase of liquid crystal dimers
Creators: name: Pardaev, Shokir A.
name: Shamid, S. M.
name: Tamba, M. G.
name: Welch, C.
name: Mehl, G. H.
name: Gleeson, J. T.
name: Allender, D. W.
name: Selinger, J. V.
name: Ellman, B.
name: Jakli, A.
name: Sprunt, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The nematic twist-bend ($\mathrm{N_{TB}}$) phase, exhibited by certain thermotropic liquid crystalline (LC) dimers, represents a new orientationally ordered mesophase -- the first distinct nematic variant discovered in many years. The $\mathrm{N_{TB}}$ phase is distinguished by a heliconical winding of the average molecular long axis (director) with a remarkably short (nanoscale) pitch and, in systems of achiral dimers, with an equal probability to form right- and left-handed domains. The $\mathrm{N_{TB}}$ structure thus provides another fascinating example of spontaneous chiral symmetry breaking in nature. The order parameter driving the formation of the heliconical state has been theoretically conjectured to be a polarization field, deriving from the bent conformation of the dimers, that rotates helically with the same nanoscale pitch as the director field. It therefore presents a significant challenge for experimental detection. Here we report a second harmonic light scattering (SHLS) study on two achiral, $\mathrm{N_{TB}}$-forming LCs, which is sensitive to the polarization field due to micron-scale distortion of the helical structure associated with naturally-occurring textural defects. These defects are parabolic focal conics of smectic-like "pseudo-layers", defined by planes of equivalent phase in a coarse-grained description of the $\mathrm{N_{TB}}$ state. Our SHLS data are explained by a coarse-grained free energy density that combines a Landau-deGennes expansion of the polarization field, the elastic energy of a nematic, and a linear coupling between the two.
The Quest for Dusty Star-forming Galaxies at High Redshift z>4
Creators: name: Mancuso, C.
name: Lapi, A.
name: Shi, J.
name: Gonzalez-Nuevo, J.
name: Aversa, R.
name: Danese, L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We exploit the continuity equation approach and the `main sequence' star-formation timescales to show that the observed high abundance of galaxies with stellar masses > a few 10^10 M_sun at redshift z>4 implies the existence of a galaxy population featuring large star formation rates (SFRs) > 10^2 M_sun/yr in heavily dust-obscured conditions. These galaxies constitute the high-redshift counterparts of the dusty star-forming population already surveyed for z<3 in the far-IR band by the Herschel space observatory. We work out specific predictions for the evolution of the corresponding stellar mass and SFR functions out to z~10, elucidating that the number density at z<8 for SFRs >30 M_sun/yr cannot be estimated relying on the UV luminosity function alone, even when standard corrections for dust extinction based on the UV slope are applied. We compute the number counts and redshift distributions (including galaxy-scale gravitational lensing) of this galaxy population, and show that current data from AzTEC-LABOCA, SCUBA-2 and ALMA-SPT surveys are already digging into it. We substantiate how an observational strategy based on a color preselection in the far-IR or (sub-)mm band with Herschel and SCUBA-2, supplemented by photometric data via on-source observations with ALMA, can allow to reconstruct the bright end of the SFR functions out to z~8. In parallel, such a challenging task can be managed by exploiting current UV surveys in combination with (sub-)mm observations by ALMA and NIKA2 and/or radio observations by SKA and its precursors.
description: 28 pages, 13 figures, 2 tables. Accepted by ApJ
Received letters glad... [Telegram from Peggy to Nicolas]
Creators: name: Abkhazi, Nicolas, 1899-1987
Publisher: name: University of Victoria Libraries
Year: 2020
Subjects: subject: Abkhazi, Peggy, 1902-
valueUri: http://id.worldcat.org/fast/163887
subject: Personal correspondence
valueUri: http://id.worldcat.org/fast/1919948
subject: Abkhazi, Nicolas, 1899-1987

description: A telegram to Peggy from Nicolas in 1946. The telegram begins "received letters glad..."
MPEC 2023-S237 : 2023 SG7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 SG7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
High Efficiency Micromorph Tandem Developments in KAI-M PECVD Reactors
Creators: name: Meier, J.
name: Bailat, J.
name: Castens, L.
name: Benagli, S.
name: Kroll, U.
name: Hötzel, J.
name: Borrello, D.
name: Djeridane, Y.
name: Steinhauser, J.
name: Vallat-Sauvain, E.
name: Orhan, J.-B
name: Ufert, K.
name: Henz, J.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Amorphous and Microcrystalline Silicon Solar Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2398-2401
description: Micromorph tandem cells with stabilized efficiencies of 10.6 % have been achieved on as-grown
LPCVD ZnO front TCO with relative degradation of around 10 %. Applying Oerlikon’s in-house developed AR
concept stabilized tandem cells with 11.0 % efficiency have been obtained using microcrystalline bottom cells of just
1.3 μm thicknesses. Implementing an advanced LPCVD ZnO front TCO stabilized tandem cells of 10.6 % have been
realized at a bottom cell thickness of only 0.8 μm. Implementing intermediate reflectors in Micromorph tandem cell
devices reveal reduced optical losses when LPCVD ZnO is applied compared to commercial SnO2.
Lie-series for orbital elements -- II. The spatial case
Creators: name: Pál, András
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: If one has to attain high accuracy over long timescales during the numerical computation of the N-body problem, the method called Lie-integration is one of the most effective algorithms. In this paper we present a set of recurrence relations with which the coefficients needed by the Lie-integration of the orbital elements related to the spatial N-body problem can be derived up to arbitrary order. Similarly to the planar case, these formulae yields identically zero series in the case of no perturbations. In addition, the derivation of the formulae has two stages, analogously to the planar problem. Namely, the formulae are obtained to the first order, and then, higher order relations are expanded by involving directly the multilinear and fractional properties of the Lie-operator.
description: Accepted for publication in CeMDA, in press, 12 pages
Nonlinear Instability and Intermittent Nature of Magnetic Reconnection in Solar Chromosphere
Creators: name: Singh, K. A. P.
name: Hillier, Andrew
name: Isobe, H.
name: Shibata, K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The recent observations of Singh et al. (2012) have shown multiple plasma ejections and the intermittent nature of magnetic reconnection in the solar chromosphere, highlighting the need for fast reconnection to occur in highly collisional plasma. However, the physical process through which fast magnetic reconnection occurs in partially ionized plasma, like the solar chromosphere, is still poorly understood. It has been shown that for sufficiently high magnetic Reynolds numbers, Sweet-Parker current sheets can become unstable leading to tearing mode instability and plasmoid formation, but when dealing with a partially ionized plasma the strength of coupling between the ions and neutrals plays a fundamental role in determining the dynamics of the system. We propose that as the reconnecting current sheet thins and the tearing instability develops, plasmoid formation passes through strongly, intermediately, and weakly coupled (or decoupled) regimes, with the time scale for the tearing mode instability depending on the frictional coupling between ions and neutrals. We present calculations for the relevant time scales for fractal tearing in all three regimes. We show that as a result of the tearing mode instability and the subsequent non-linear instability due to the plasmoid-dominated reconnection, the Sweet-Parker current sheet tends to have a fractal-like structure, and when the chromospheric magnetic field is sufficiently strong the tearing instability can reach down to kinetic scales, which are hypothesized to be necessary for fast reconnection.
description: 10 pages, 3 figures, published in PASJ 10/2015
MPEC 2023-S238 : 2023 SH7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 SH7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Robust imaging of hippocampal inner structure at 7T: in vivo acquisition protocol and methodological choices
Creators: name: Marrakchi-Kacem, Linda
name: Vignaud, Alexandre
name: Sein, Julien
name: Germain, Johanne
name: Henry, Thomas R
name: Poupon, Cyril
name: Hertz-Pannier, Lucie
name: Lehéricy, Stéphane
name: Colliot, Olivier
name: Van de Moortele, Pierre-François
name: Chupin, Marie
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: OBJECTIVE:Motion-robust multi-slab imaging of hippocampal inner structure in vivo at 7T.MATERIALS AND METHODS:Motion is a crucial issue for ultra-high resolution imaging, such as can be achieved with 7T MRI. An acquisition protocol was designed for imaging hippocampal inner structure at 7T. It relies on a compromise between anatomical details visibility and robustness to motion. In order to reduce acquisition time and motion artifacts, the full slab covering the hippocampus was split into separate slabs with lower acquisition time. A robust registration approach was implemented to combine the acquired slabs within a final 3D-consistent high-resolution slab covering the whole hippocampus. Evaluation was performed on 50 subjects overall, made of three groups of subjects acquired using three acquisition settings; it focused on three issues: visibility of hippocampal inner structure, robustness to motion artifacts and registration procedure performance.RESULTS:Overall, T2-weighted acquisitions with interleaved slabs proved robust. Multi-slab registration yielded high quality datasets in 96 % of the subjects, thus compatible with further analyses of hippocampal inner structure.CONCLUSION:Multi-slab acquisition and registration setting is efficient for reducing acquisition time and consequently motion artifacts for ultra-high resolution imaging of the inner structure of the hippocampus.
Development of a numerical approach for the simulation of boatlanding maneuvers
Creators: name: Ferreira González, Daniel
Publisher: name: TUHH Universitätsbibliothek
Year: 2023
Subjects: subject: acceleration potential
subject: boatlanding maneuver
subject: boundary element method
subject: mixed-Eulerian-Lagrangian method
subject: wave-body interaction
classificationCode: 600
subject: Technik
classificationCode: 620
subject: Ingenieurwissenschaften

description: Die Arbeit handelt von der Entwicklung einer numerischen Methode zur Simulation von Anlegemanövern von Serviceschiffen an Offshore-Plattformen. Der Ansatz basiert auf einer Randelemente-Methode und berechnet das Landemanöver im Zeitbereich unter Berücksichtigung der nicht-linearen freien Wasseroberfläche. Ein Kontakt-Model wird zur Beschreibung der Reibkräfte zwischen Fender und Anlegestruktur und zur Bestimmung, ob der Fender während des Manövers ins Rutschen gerät oder nicht, verwendet. Des Weiteren werden Modellversuche in Wellen durchgeführt. Die experimentellen Daten werden zur Validierung verwendet. Es wird gezeigt, dass die Methode das Landemanöver simulieren und das Abrutschen des Fenders prognostizieren kann.
description: The thesis is about the development of a numerical method for the simulation of boat-landing maneuver at offshore platforms. The approach is based on a boundary panel method, and it computes the boat-landing maneuver in the time domain considering the non-linear free water surface. A fender contact model is applied to describe the friction forces between fender and boat-landing struts and to detect whether the fender slips or not during the landing maneuver. Furthermore, model tests are conducted in waves. The experimental data is used to validate the developed method. It is demonstrated that the approach is able to simulate the boat-landing maneuver and that it is able to forecast the occurrence of slip during the maneuver.
Nodeless superconductivity in noncentrosymmetric PbTaSe$_2$ single crystals
Creators: name: Pang, G. M.
name: Smidman, M.
name: Zhao, L. X.
name: Wang, Y. F.
name: Weng, Z. F.
name: Che, L. Q.
name: Chen, Y.
name: Lu, X.
name: Chen, G. F.
name: Yuan, H. Q.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report an investigation of the superconducting order parameter of the noncentrosymmetric compound PbTaSe$_2$, which is believed to have a topologically nontrivial band structure. Precise measurements of the London penetration depth $Δλ(T)$ obtained using a tunnel diode oscillator (TDO) based method show an exponential temperature dependence at $T\ll T_c$, suggesting a nodeless superconducting gap structure. A single band s-wave model well describes the corresponding normalized superfluid density, with a gap magnitude of $Δ(0)=1.85T_c$. This is very close to the value of $1.76T_c$ for weak-coupling BCS superconductors, indicating conventional fully-gapped superconductivity in PbTaSe$_2$.
description: 5 pages, 4 figures
High Rate 13.56 MHz PECVD a-Si:H for SPC Poly-Si Thin Film Solar Cells
Creators: name: Widenborg, P.I.
name: Jin, G.
name: Gress, P.
name: Varlamov, S.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Thin Films Solar Cells
Thin Film Crystalline Silicon Solar Cells and Wafer Equivalents

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 2337-2340
description: Polycrystalline silicon (poly-Si) thin-film solar cells fabricated by solid phase crystallisation (SPC) of
hydrogenated amorphous silicon (a-Si:H) are investigated. The a-Si:H is deposited by conventional 13.56 MHz
plasma enhanced vapor deposition (PECVD) at very high rate on SiN coated planar and textured glass substrates.
Raman microprobe and Suns-Voc measurements reveal that the crystal quality and open circuit voltage (Voc) remain
high for SPC poly-Si solar cells where the absorber part is deposited at a rate of 250 nm/min, which is around 7
times higher than for the standard process (35 nm/min). Furthermore, IV measurements on fully metallised samples
demonstrate that short circuit current and PV efficiency are similar for high rate samples compared to the standard
process. These promising results indicate that high rate PECVD can be a viable approach to solving a problem of
the excessively high cost of the conventional PECVD process, on which the current SPC poly-Si technology is based
on. Finally, the progress in efficiency for PECVD SPC poly-Si thin film solar cells has been good at UNSW, with a
9.3% efficiency cell fabricated during 2008. With recent advances in the aluminium induced glass texture process, a
efficiency of above 10% is expected soon.
Numerical modeling of exciton-polariton Bose--Einstein condensate in a microcavity
Creators: name: Voronych, Oksana
name: Buraczewski, Adam
name: Matuszewski, Michał
name: Stobińska, Magdalena
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A novel, optimized numerical method of modeling of an exciton-polariton superfluid in a semiconductor microcavity was proposed. Exciton-polaritons are spin-carrying quasiparticles formed from photons strongly coupled to excitons. They possess unique properties, interesting from the point of view of fundamental research as well as numerous potential applications. However, their numerical modeling is challenging due to the structure of nonlinear differential equations describing their evolution. In this paper, we propose to solve the equations with a modified Runge--Kutta method of 4th order, further optimized for efficient computations. The algorithms were implemented in form of C++ programs fitted for parallel environments and utilizing vector instructions. The programs form the EPCGP suite which have been used for theoretical investigation of exciton-polaritons.
description: 23 pages, 6 figures
Production of Selective Emitter Solar Cells Using Printable Doping Pastes
Creators: name: Liu, Y.-C.
name: Chen, W.-Y.
name: Li, C.-C.
name: Tang, W.-C.
Publisher: name: WIP
Year: 2011
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Silicon Solar Cell Improvements

description: 26th European Photovoltaic Solar Energy Conference and Exhibition; 1381-1384
description: Application of selective emitter structure on crystalline silicon solar cells could significantly
improve the cell efficiency by reducing the recombination on the front surface of the cells. The
structure could be realized by various approaches, though many of them are complicated and
expensive. In this paper, we present the selective emitter process using printable doping paste.
Only the doping paste printing step is added to the conventional c-Si production process flow. We
successfully developed the process of the single-step diffusion and that of the pattern-alignment screen
printing, both crucial in reducing the cost of selective emitter solar cell production. The cells
fabricated have been made into 60-cell modules, with output exceeding 250W. The approach is
potentially the lowest-cost and the least complex for mass production of selective emitter solar cells.
Nereid from space: Rotation, size and shape analysis from Kepler/K2, Herschel and Spitzer observations
Creators: name: Kiss, Cs.
name: Pál, A.
name: Farkas-Takács, A. I.
name: Szabó, Gy. M.
name: Szabó, R.
name: Kiss, L. L.
name: Molnár, L.
name: Sárneczky, K.
name: Müller, Th. G.
name: Mommert, M.
name: Stansberry, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this paper we present an analysis of Kepler K2 mission Campaign 3 observations of the irregular Neptune satellite, Nereid. We determined a rotation period of P=11.594(+/-)0.017 h and amplitude of dm=0.0328(+/-)00018, confirming previous short rotation periods obtained in ground based observations. The similarities of light curve amplitudes between 2001 and 2015 show that Nereid is in a low-amplitude rotation state nowadays and it could have been in a high-amplitude rotation state in the mid 1960's. Another high-amplitude period is expected in about 30 years. Based on the light curve amplitudes observed in the last 15 years we could constrain the shape of Nereid and obtained a maximum a:c axis ratio of 1.3:1. This excludes the previously suggested very elongated shape of a:c=1.9:1 and clearly shows that Nereid's spin axis cannot be in forced precession due to tidal forces. Thermal emission data from the Spitzer Space Telescope and the Herschel Space Observatory indicate that Nereid's shape is actually close to the a:c axis ratio limit of 1.3:1 we obtained, and it has a very rough, highly cratered surface
description: Accepted for publication in MNRAS