cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Emergence of spontaneous symmetry breaking in dissipative lattice systems
Creators: name: Wilming, H.
name: Kastoryano, M. J.
name: Werner, A. H.
name: Eisert, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A cornerstone of the theory of phase transitions is the observation that many-body systems exhibiting a spontaneous symmetry breaking in the thermodynamic limit generally show extensive fluctuations of an order parameter in large but finite systems. In this work, we introduce the dynamical analogue of such a theory. Specifically, we consider local dissipative dynamics preparing a steady-state of quantum spins on a lattice exhibiting a discrete or continuous symmetry but with extensive fluctuations in a local order parameter. We show that for all such processes satisfying detailed balance, there exist metastable symmetry-breaking states, i.e., states that become stationary in the thermodynamic limit and give a finite value to the order parameter. We give results both for discrete and continuous symmetries and explicitly show how to construct the symmetry-breaking states. Our results show in a simple way that, in large systems, local dissipative dynamics satisfying detailed balance cannot uniquely and efficiently prepare states with extensive fluctuations with respect to local operators. We discuss the implications of our results for quantum simulators and dissipative state preparation.
description: 15 pages
Exploring associations between diet and quality of life (QoL) among older adults in the context of healthy ageing
Creators: name: GOVINDARAJU, THARA
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 320210
subject: Geriatrics and gerontology
classificationCode: 321005
subject: Public health nutrition

description: This thesis intended to build evidence for relationship between dietary intake and Quality of life (QoL) in both healthy and at-risk older adults in the context of healthy ageing and utilised data from two cohorts- a healthy cohort and an at- risk cohort of older adults. The thesis identified dietary patterns and its determinants among older Australians, assessed QoL and its trajectories among healthy older adults and investigated associations between dietary patterns and QoL in both healthy and at-risk older Australians. The thesis demonstrated a relationship between dietary patterns and QoL and when lacking, there was a mediating role played by diet. The thesis also identified gaps in existing tools for assessing diet and QoL and their application to the older adult population and the need for longitudinal studies in older adults exploring associations between diet and QoL.
Voluntary Exercise Potentiates Myelin Repair by Oligodendrogenic Neural Precursor Cells and Oligodendrocyte Progenitor Cells
Creators: name: POH, JASMINE JIAMIN
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 320999
subject: Neurosciences not elsewhere classified

description: The myelination of axons is a pivotal component of the nervous system therefore it is detrimental when there is a breakdown of myelin in demyelinating diseases such as multiple sclerosis. This thesis provides compelling evidence in support of utilising a non-invasive method such as voluntary exercise to potentiate myelin repair following a demyelinating injury.
Litocampa espanoli
Creators: name: Sendra, Alberto
name: Reboleira, Ana Sofia P. S.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplura
Campodeidae
Litocampa
Litocampa espanoli

description: Litocampa espanoli (Condé, 1949)
Figs 27–28
Plusiocampa espanoli Condé, 1949c: 569, fig. 1.
Litocampa espanoli – Paclt 1957: 26.
Diagnosis (Condé 1949c, 1982b)
Body length 4.0– 9.5 mm; epicuticle without microdenticles under optical microscope but visible in SEM; smooth clothing setae; antennae with 40–53 antennomeres; sensillum of third antennomere in ventral position; prominent frontal process; cupuliform organ with seven to eight complex olfactory chemoreceptors; 1+1 ma, 1+1 la, 1+1 lp macrosetae on promotum and mesonotum, 1+1 ma, 1+1 lp on metanotum; thick, long notal macrosetae with barbs along distal two-third to three-fourth; marginal setae longer and thicker than clothing setae with a few distal barbs; one dorsal femoral macroseta; one baciliform trochanteral sensillum; calcars with barbs along length; one but more frequently two ventral tibial machocaetae; smooth subapical tarsal setae; subequal elbow-like claws with small smooth lateral crests, smooth setiform telotarsal processes; 1+1 lp on III–IV urotergites; 1+1 la, 2+2 lp on V– VII urotergites, 1+1 mp, 3+3 lp on VIII urotergite, 1+1 mp, 5+5 lp on IX abdominal segment; male without glandular g 1 -setae (with g 1 in Cantabrian and Salvada Mountain specimens); male with large subtrapezoidal appendages with glandular a 1 and a 2 setae; long subcylindrical appendages in females slightly enlarged with glandular a 1 and a 2 setae; cerci covered in long macrosetae barbed along distal half and thin barbed clothing setae.
Taxonomic notes
The studied material (Supplementary file 2) has allowed to photograph some structures under SEM (Figs 27–28).
Habitat and distribution
Cave-dwelling species widely distributed in the Basque Mountains, Spain (Condé 1982b).
description: Published as part of Sendra, Alberto & Reboleira, Ana Sofia P. S., 2020, Euro-Mediterranean fauna of Campodeinae (Campodeidae, Diplura), pp. 1-130 in European Journal of Taxonomy 728 on pages 99-100, DOI: 10.5852/ejt.2020.728.1181, http://zenodo.org/record/4316883
Development and Evaluation of an Interdisciplinary Intervention for Persisting Post-Concussion Symptoms after Mild Traumatic Brain Injury
Creators: name: VAN KHOA NGUYEN, JACK
Publisher: name: Monash University
Year: 2023
Subjects: classificationCode: 520301
subject: Clinical neuropsychology
classificationCode: 420109
subject: Rehabilitation

description: A subset of individuals with mild traumatic brain injury (mTBI) experience persisting post-concussion symptoms (PPCSs) which may interfere with the return to activities, causing stress for months and sometimes years after injury. PPCSs are influenced by a range of factors, necessitating multi-modal treatment. Developed as part of this thesis, i-RECOveR, an interdisciplinary intervention which combines neuropsychology, physiotherapy, and medical treatments, was evaluated in 15 adults with mTBI. Findings provide insights into the complex and multifactorial nature of PPCSs and provide support for the feasibility of i-RECOveR, underscoring the potential benefit of coordinated treatments in reducing PPCSs and contributing to goal attainment.
Tremelimumab: First Approval
Creators: name: Keam, Susan
Publisher: name: Adis Journals
Year: 2023
Subjects: Medicine

description: Declarations Funding The preparation of this review was not supported by any external funding. Authorship and Conflict of interest During the peer review process the manufacturer of the agent under review was offered an opportunity to comment on the article. Changes resulting from any comments received were made by the authors on the basis of scientific completeness and accuracy. Susan J. Keam is a contracted employee of Adis International Ltd/Springer Nature, and declares no relevant conflicts of interest. All authors contributed to the review and are responsible for the article content. Ethics approval, Consent to participate, Consent to publish, Availability of data and material, Code availability not applicable Additional information about this Adis Drug Review can be found here. Abstract Tremelimumab (tremelimumab-actl; IMJUDO®), a cytotoxic T lymphocyte-associated antigen-4 (CTLA-4) blocking antibody, is being developed by AstraZeneca, under license from Pfizer, for the treatment of a range of malignant tumours. Tremelimumab was approved in the USA in October 2022 in combination with durvalumab for the treatment of adult patients with unresectable hepatocellular carcinoma (uHCC). In addition, tremelimumab in combination with durvalumab and platinum-based chemotherapy was approved in the USA in November 2022 for the treatment of adult patients with metastatic non-small cell lung cancer (mNSCLC) with no sensitizing epidermal growth factor receptor mutation or anaplastic lymphoma kinase genomic tumour aberrations. In December 2022, tremelimumab in combination with durvalumab received a Positive Opinion from the EU Committee for Medicinal Products for Human Use for the first line treatment of adults with advanced or unresectable HCC. Tremelimumab in combination with durvalumab is under regulatory review for these indications in Japan and in other countries worldwide. This article summarizes the milestones in the development of tremelimumab leading to this first approval. © Springer Nature Switzerland AG 2022
The thermal instability of the warm absorber in NGC 3783
Creators: name: Goosmann, R. W.
name: Holczer, T.
name: Mouchet, M.
name: Dumont, A. -M.
name: Behar, E.
name: Godet, O.
name: Goncalves, A. C.
name: Kaspi, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We model the observed X-ray spectral continuum shape, ionic column densities, and absorption measure distribution (AMD) of the warm absorber in the Seyfert galaxy NGC 3783. We assume a photo-ionized medium with a uniform total (gas+radiation) pressure. The irradiation causes the wind to be radiation pressure compressed (RPC). We compare the observational characteristics derived from the 900 ksec Chandra observation to radiative transfer computations in pressure equilibrium using the radiative transfer code TITAN. We explore different values of the ionization parameter xi of the incident flux and adjust the hydrogen-equivalent column density, N_H0 of the warm absorber to match the observed soft X-ray continuum. We derive theoretical column densities for a broad range of ionic species of iron and neon and an AMD that we compare to the observations. We find an extension of the degeneracy between xi and N_H0 for the constant pressure models previously discussed for NGC 3783. Including the ionic column densities of iron and neon in the comparison between observations and data we conclude that a range of ionization parameters between 4000 and 8000 ergs cm/s is preferred. For the first time, we present theoretical AMD for a constant pressure wind in NGC 3783 that correctly reproduces the observed level and is in approximate agreement with the observational appearance of an instability region. Using a variety of observational indicators, we confirm that the X-ray outflow of NGC 3783 can be described as an RPC medium in pressure equilibrium. The observed AMD agrees with a uniformly hot or a uniformly cold thermal state. The measured ionic column densities suggest that the wind tends to the uniformly cold thermal state. The occurrence of thermal instability in the warm absorber model may depend on the computational method and the spatial scale on which the radiative transfer is solved.
description: accepted for publication in Astronomy & Astrophysics
A detailed view of the gas shell around R Sculptoris with ALMA
Creators: name: Maercker, M.
name: Vlemmings, W. H. T.
name: Brunner, M.
name: De Beck, E.
name: Humphreys, E. M.
name: Kerschbaum, F.
name: Lindqvist, M.
name: Olofsson, H.
name: Ramstedt, S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Thermal pulses are fundamental to the chemical evolution of AGB stars and their circumstellar envelopes. A further consequence of thermal pulses is the formation of detached shells of gas and dust around the star. We aim to determine the physical properties of the detached gas shell around R Sculptoris, in particular the shell mass and temperature, and to constrain the evolution of the mass-loss rate during and after a thermal pulse. We analyse CO(1-0), CO(2-1), and CO(3-2) emission, observed by. The spatial resolution of the ALMA data allows us to separate the detached shell emission from the extended emission inside the shell. We perform radiative transfer modelling of both components to determine the shell properties and the post-pulse mass-loss properties. The ALMA data show a gas shell with a radius of 19.5" expanding at 14.3km/s. The different scales probed by the ALMA Cycle 0 array show that the shell must be entirely filled with gas, contrary to the idea of a detached shell. The comparison to single-dish spectra and radiative transfer modelling confirms this. We derive a shell mass of 4.5e-3 Msun with a temperature of 50K. Typical timescales for thermal pulses imply a pulse mass-loss rate of 2.3e-5 Msun/yr. For the post-pulse mass-loss rate, we find evidence for a gradual decline of the mass-loss rate, with an average value of 1.6e-5 Msun/yr. The total amount of mass lost since the last thermal pulse is 0.03 Msun, a factor four higher compared to classical models, with a sharp decline in mass-loss rate immediately after the pulse. We find that the mass-loss rate after a thermal pulse has to decline more slowly than generally expected from models of thermal pulses. This may cause the star to lose significantly more mass during a thermal pulse cycle, which affects the chemical evolution of the star and the interstellar medium.
description: 12 pages, 7 figures, accepted by A&A
Voltammetry: mathematical modelling and Inverse Problem
Creators: name: Koshev, N. A.
name: Koshev, A. N.
name: Kuzina, V. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We propose the fast semi-analytical method of modelling the polarization curves in the voltammetric experiment. The method is based on usage of the special func- tions and shows a big calculation speed and a high accuracy and stability. Low computational needs of the proposed algorithm allow us to state the set of Inverse Problems of voltammetry for the reconstruction of metal ions concentrations or the other parameters of the electrolyte under investigation.
description: 12 pages, 3 figures, 2 tables
The global prevalence of NAFLD-related advanced fibrosis in patients with type 2 diabetes mellitus: a systematic review and meta-analysis
Creators: name: Wongtrakul, Wasit
name: Sorachat Niltwat
name: Khemajira Karaketklang
name: Natthinee  Charatcharoenwitthaya
name: Charatcharoenwitthaya, Phunchai
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Medicine and Health Sciences

description: Background: Patients diagnosed with non-alcoholic fatty liver disease (NAFLD) and advanced fibrosis have a strong correlation with type 2 diabetes mellitus (T2DM) and are vulnerable to disease progression and unfavorable clinical consequences. Nevertheless, there is limited understanding of the global epidemiology of NAFLD-related advanced fibrosis among individuals with T2DM. Therefore, the primary objective of this study was to assess the prevalence rate of NAFLD-related advanced fibrosis in patients with T2DM across different regions of the world. Method: A systematic review was conducted, encompassing studies assessing NAFLD-related advanced fibrosis in patients with T2DM, from inception to November 2022. Random-effects models were utilized to estimate prevalence (95% confidence interval), and meta-regression with subgroup analysis was employed to address heterogeneity.
Intrinsic Optical Bistability in a Strongly-Driven Rydberg Ensemble
Creators: name: de Melo, Natalia R.
name: Wade, Christopher G.
name: Sibalic, Nikola
name: Kondo, Jorge M.
name: Adams, Charles S.
name: Weatherill, Kevin J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We observe and characterize intrinsic optical bistability in a dilute Rydberg vapor. The bistability is characterized by sharp jumps between states of low and high Rydberg occupancy with jump up and down positions displaying hysteresis depending on the direction in which the control parameter is changed. We find that the shift in frequency of the jump point scales with the fourth power of the principal quantum number. Also, the width of the hysteresis window increases with increasing principal quantum number, before reaching a peak and then closing again. The experimental results are consistent with predictions from a simple theoretical model based on semiclassical Maxwell-Bloch equations including the effect of broadening and frequency shifts. These results provide insight to the dynamics of driven dissipative systems.
Arithmetic with optical topological charged in step-wise excited Rb vapour
Creators: name: Akulshin, Alexander M.
name: Novikova, Irina
name: Mikhailov, Eugeniy E.
name: Suslov, Sergey A.
name: McLean, Russell J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on experimentally observed addition, subtraction and cancellation of orbital angular momentum (OAM) in the process of parametric four-wave mixing that results in frequency up- and down-converted emission in Rb vapour. Specific features of OAM transfer from resonant laser fields with different optical topological charges to the spatially and temporally coherent blue light have been considered. We have observed the conservation of OAM in nonlinear wave mixing in a wide range of experimental conditions including a non-collinear geometry of the applied laser beams and furthermore that the coherent blue light accumulates the total orbital angular momentum of the applied laser light. Spectral and power dependences of vortex and plane wave front blue light beams have been compared.
description: 4 pages, 6 figures
title: East African Journal of Sciences, Vol. 17 No. 2 (2023): East African Journal of Sciences
title: East African Journal of Sciences
titleType: AlternativeTitle
Creators: name: East African Journal Of Sciences
Publisher: name: East African Journal of Sciences
Year: 2023

description: The East African Journal of Sciences (EAJS) publishes original scientific papers and disseminates scientific and technological information to the users in Eastern Africa and elsewhere in the world. It also enhances exchange of ideas among scientists engaged in research and development activities and accepts papers from anywhere else in the world.
description: Registration of “Marara” Sorghum [Sorghum bicolor (L.) Moench] Variety...215-220 Potential and Prospects of Utilization, Development, and Conservation of Wild Edible Plants of the Meinit Ethnic Community in Bench-Maji Zone, Southwestern Ethiopia...199-214 Integrated Use of Farmyard Manure and NPS Influenced Soil Chemical Properties, Yield and Yield Attributes of Sorghum (Sorghum bicolor L.) in Assosa District, Western Ethiopia...185-198 Agronomic, Yield, and Fiber Quality Performance of Improved Cotton Varieties under Irrigated Conditions of Weyto and Sille Cotton Growing Areas of Ethiopia...173-184 Evaluating Cotton (Gossypium hirsutum L.) Genotypes for Fiber Quality Traits over Selected Agro-ecologies of Ethiopia...165-172 The Impact of Foreign Aid, Trade Balance, and Remittance on Economic Growth in Ethiopia: Application of Autoregressive Distributed Lag Model...149-164 Relationships between Family Communication and Disruptive Behaviors of Adolescents in Harari Regional State...135-148 Performance and Carcass Components of Broilers Fed on Different Proportions of Maize and Dry Roasted Barley...123-134 Characterizing and Classifying Soils of Sentele Watershed, Hadiya Zone, Southern Ethiopia...109-122
Speckle statistics of entangled photons
Creators: name: Klein, Avraham
name: Agam, Oded
name: Spivak, Boris
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider the propagation of several entangled photons through an elastically scattering medium and study statistical properties of their speckle patterns. We find the spatial correlations of multiphoton speckles and their sensitivity to changes of system parameters. Our analysis covers both the directed-wave regime, where rays propagate almost ballistically while experiencing small-angle diffusion, and the real-space diffusive regime. We demonstrate that long-range correlations of the speckle patterns dominate experimental signatures for large-aperture photon detectors. We also show that speckle sensitivity depends strongly on the number of photons $N$ in the incoming beam, increasing as $\sqrt{N}$ in the directed-wave regime and as $N$ in the diffusive regime.
description: 12 pages, 10 figures
Reconstructing cosmic growth with kSZ observations in the era of Stage IV experiments
Creators: name: Alonso, David
name: Louis, Thibaut
name: Bull, Philip
name: Ferreira, Pedro G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Future ground-based CMB experiments will generate competitive large-scale structure datasets by precisely characterizing CMB secondary anisotropies over a large fraction of the sky. We describe a method for constraining the growth rate of structure to sub-1% precision out to $z\approx 1$, using a combination of galaxy cluster peculiar velocities measured using the kinetic Sunyaev-Zel'dovich (kSZ) effect, and the velocity field reconstructed from galaxy redshift surveys. We consider only thermal SZ-selected cluster samples, which will consist of $\mathcal{O}(10^4-10^5)$ sources for Stage 3 and 4 CMB experiments respectively. Three different methods for separating the kSZ effect from the primary CMB are compared, including a novel blind "constrained realization" method that improves signal-to-noise by a factor of $\sim 2$ over a commonly-used aperture photometry technique. Measurements of the integrated tSZ $y$-parameter are used to break the kSZ velocity-optical depth degeneracy, and the effects of including CMB polarization and SZ profile uncertainties are also considered. A combination of future Stage 4 experiments should be able to measure the product of the growth and expansion rates, $α\equiv f H$, to better than 1% in bins of $Δz = 0.1$ out to $z \approx 1$ -- competitive with contemporary redshift-space distortion constraints from galaxy surveys.
description: 16 pages, 8 figures
Separability of test fields equations on the C-metric background
Creators: name: Kofroň, David
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the Kerr-Newman spacetime the Teukolsky master equation, governing the fundamental test fields, is of great importance. We derive an analogous master equation for the non-rotating C-metric which encompass massless Klein-Gordon field, neutrino field, Maxwell field, Rarita-Schwinger field and gravitational perturbations. This equation is shown to be separable in terms of "accelerated spin weighted spherical harmonics". It is shown that, contrary to ordinary spin weighted spherical harmonics, the "accelerated" ones are different for different spins. In some cases, the equation for eigenfunctions and eigenvalues are explicitly solved.
Observation of Replica Symmetry Breaking in the 1D Anderson Localization Regime in an Erbium-Doped Random Fiber Laser
Creators: name: Gomes, Anderson S. L.
name: Lima, Bismarck C.
name: Pincheira, Pablo I. R.
name: Moura, André L.
name: Gagné, Mathieu
name: Kashyap, Raman
name: Raposo, Ernesto P.
name: de Araújo, Cid B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The analogue of the paramagnetic to spin-glass phase transition in disordered magnetic systems, leading to the phenomenon of replica symmetry breaking, has been recently demonstrated in a two-dimensional random laser consisting of an organic-based amorphous solid-state thin film. We report here the first demonstration of replica symmetry breaking in a one-dimensional photonic system consisting of an erbium-doped random fiber laser operating in the continuous-wave regime based on a unique random fiber grating system, which plays the role of the random scatterers and operates in the Anderson localization regime. The clear transition from a photonic paramagnetic to a photonic spin glass phase, characterized by the probability distribution function of the Parisi overlap, was verified and characterized. In this unique system, the radiation field interacts only with the gain medium, and the fiber grating, which provides the disordered feedback mechanism, does not interfere with the pump.
title: Is Additive Construction Ready for Seismic Regions? – A New Seismic Protective System Enabled by Additive Construction
Creators: name: Mackin, Anthony
name: Migliorino, Jenna
name: Farhoud, Hamdy
name: Mantawy, Islam
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: accelerated bridge construction
subject: seismic
subject: repair
subject: deconstruction
subject: additive construction
subject: 62

description: Conventional design for bridges in seismic-prone areas relies on duc-tility concept by concentrating the damage at columns’ ends. This approach is adequate for life safety; however, bridge columns exhibit significant damage and residual deformations resulting in expensive repairs or the need for full re-placement. Several seismic protective systems were developed over the last few decades to minimize the damage and enable repair after strong earthquakes like rocking systems, dampers, and seismic isolation systems. This paper proposes an innovative system that integrates several seismic protective concepts to achieve self-repair and deconstruction through additive construction. In this proposed system, protected elements such as bridge bent caps, columns, and footings are additively constructed. In addition, the columns are designed to rock at interfaces between the columns and bent cap/footing, and external ele-ments are added to dissipate energy to promote resiliency.
description: Digital Concrete 2024 - Supplementary Proceedings
title: Powder-Bed 3D Printing of Cementitious Materials for Lightweight Construction Elements
Creators: name: Hlaváček, Petr
name: Wolf, Christoph
name: Robens-Radermacher, Annika
name: Kühne, Hans-Carsten
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: Powder-bed 3D printing
subject: lightweight construction elements
subject: topology optimization
subject: cementitious materials
subject: material development
subject: 62

description: Digital Concrete 2024 - Supplementary Proceedings
title: A Review of Developments in Low Carbon 3D Printed Concrete in Europe: Steps Towards Sustainable Construction
Creators: name: Khan, Mehran
name: McNally, Ciaran
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: 3D printing concrete
subject: Sustainable construction
subject: Waste
subject: Low carbon concrete
subject: Carbon emissions
subject: 62

description: This paper gives a brief overview of low-carbon 3D printed concrete as a potential means of implementing sustainable construction methods in Europe. The definition and uses of 3D printing in the construction industry, concerns with the production of conventional concrete, and the need for low-carbon substitutes are all discussed in the paper. The sustainability performance of low carbon 3D printed concrete and its benefits and comparisons to conventional concrete and other environmentally friendly alternatives are also explored. The review concludes with recommendations for future research and challenges associated with implementing low-carbon 3D-printed concrete in the construction sector. According to the study, using low-carbon 3D printed concrete significantly benefits sustainability by minimizing energy consumption, carbon emissions, and waste. However, for the technology to scale, issues including cost, regulatory restrictions, material accessibility, a lack of knowledge, and size restrictions must be resolved. This study highlights the need for innovation, collaboration, and investment to realize the potential of low-carbon 3D-printed concrete for sustainable construction practices.
description: Digital Concrete 2024 - Supplementary Proceedings
Quantum Bitcoin: An Anonymous and Distributed Currency Secured by the No-Cloning Theorem of Quantum Mechanics
Creators: name: Jogenfors, Jonathan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The digital currency Bitcoin has had remarkable growth since it was first proposed in 2008. Its distributed nature allows currency transactions without a central authority by using cryptographic methods and a data structure called the blockchain. In this paper we use the no-cloning theorem of quantum mechanics to introduce Quantum Bitcoin, a Bitcoin-like currency that runs on a quantum computer. We show that our construction of quantum shards and two blockchains allows untrusted peers to mint quantum money without risking the integrity of the currency. The Quantum Bitcoin protocol has several advantages over classical Bitcoin, including immediate local verification of transactions. This is a major improvement since we no longer need the computationally intensive and time-consuming method Bitcoin uses to record all transactions in the blockchain. Instead, Quantum Bitcoin only records newly minted currency which drastically reduces the footprint and increases efficiency. We present formal security proofs for counterfeiting resistance and show that a quantum bitcoin can be re-used a large number of times before wearing out - just like ordinary coins and banknotes. Quantum Bitcoin is the first distributed quantum money system and we show that the lack of a paper trail implies full anonymity for the users. In addition, there are no transaction fees and the system can scale to any transaction volume.
description: 17 pages, no figures, extended abstract
Non-Zhang-Rice singlet character of the first ionization state of T-CuO
Creators: name: Adolphs, Clemens P J
name: Moser, Simon
name: Sawatzky, George A
name: Berciu, Mona
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We argue that tetragonal CuO (T-CuO) has the potential to finally settle long-standing modelling issues for cuprate physics. We compare the one-hole quasiparticle (qp) dispersion of T-CuO to that of cuprates, in the framework of the strongly-correlated ($U_{dd}\rightarrow \infty$) limit of the three-band Emery model. Unlike in CuO$_2$, magnetic frustration in T-CuO breaks the $C_4$ rotational symmetry and leads to strong deviations from the Zhang-Rice singlet picture in parts of the reciprocal space. Our results are consistent with angle-resolved photoemission spectroscopy data but in sharp contradiction to those of a one-band model previously suggested for them. These differences identify T-CuO as an ideal material to test a variety of scenarios proposed for explaining cuprate phenomenology.
description: 4 pages, 2 figures
Nirsevimab: First Approval
Creators: name: Keam, Susan
Publisher: name: Adis Journals
Year: 2023
Subjects: Medicine

description: Declarations Funding The preparation of this review was not supported by any external funding. Authorship and Conflict of interest During the peer review process the manufacturer of the agent under review was offered an opportunity to comment on the article. Changes resulting from any comments received were made by the authors on the basis of scientific completeness and accuracy. Susan J. Keam is a contracted employee of Adis International Ltd/Springer Nature, and declares no relevant conflicts of interest. All authors contributed to the review and are responsible for the article content. Ethics approval, Consent to participate, Consent to publish, Availability of data and material, Code availability not applicable Additional information about this Adis Drug Review can be found here. Abstract Nirsevimab (Beyfortus®), a long-acting intramuscular recombinant neutralising human IgG1ĸ monoclonal antibody to the prefusion conformation of the respiratory syncytial virus (RSV) F protein that has been modified with a triple amino acid substitution in the Fc region to extend the serum half-life, is being jointly developed by AstraZeneca and Sanofi for the prevention of RSV disease. The extended serum half-life allows administration of nirsevimab as a single dose to cover the RSV season. Nirsevimab was approved in the EU on 3 November 2022 and in the UK on 7 November 2022 for the prevention of RSV lower respiratory tract disease in neonates and infants during their first RSV season. This article summarizes the milestones in the development of nirsevimab leading to this first approval for the prevention of RSV disease in all infants. © Springer Nature Switzerland AG 2022
title: Effect of the printing process on thermal performance of 3D-printed structures
Creators: name: Sovetova, Meruyert
name: Calautit, John
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: 3D printing construction
subject: digital construction
subject: thermal performance
subject: printing parameters
subject: material extrusion
subject: additive manufacturing
subject: 62

description: The construction industry significantly contributes to environmental impact, and the adoption of automation-oriented approaches can help mitigate this impact. 3D-printed concrete, characterised by its layered structure, exhibits different properties compared to traditional cast concrete. This study investi-gates the influence of the printing process on the thermal properties of 3D-printed concrete, aiming to bridge the knowledge gap in the thermal and energy performance of 3D-printed buildings. An experiment using a heat flow meter and infrared thermal camera test was conducted to evaluate the thermal conduc-tivity, identify potential thermal bridges, and assess the impact of printing pa-rameters on the thermal performance of 3D-printed concrete structures. The re-sults showed that the thermal conductivity of 3D-printed concrete printed with varying printing parameters ranges from 0.366 W/moC to 0.668 W/moC. The study revealed that printing parameters have a significant influence on the thermal properties of 3D-printed concrete. The study identified potential ther-mal bridges caused by the printing process. The interfaces between layers can create weak paths for heat transfer, resulting in localised areas of higher thermal conductivity. Optimising printing parameters is crucial to achieve the desired thermal performance and eliminate potential thermal bridges, paving the way for energy-efficient 3D-printed buildings. This study provides valuable insights into the design and construction of 3D-printed concrete structures, contributing to the development of sustainable building practices and additive manufacturing in construction.
description: Digital Concrete 2024 - Supplementary Proceedings
Memoria social, una experiencia de salvaguarda en el cantón San Lorenzo. Entre vegetación, ríos y mar
Creators: name: Pico Arregui, Iris
Publisher: name: Zenodo
Year: 2024

description: Este artículo muestra la experiencia de recopilar historias y técnicas de algunas personas que conservan el patrimonio intangible en San Lorenzo del Pailón, al norte de la provincia de Esmeraldas, en las comunidades Palma Real, Tululbí, Ricaurte, Urbina, San Antonio, San Javier de Cachaví, San Lorenzo capital y La Ceiba. Elobjetivo de la investigación fue identificar las manifestaciones del patrimonio cultural intangible vigentes y losportadores de este cantón. La recopilación de la memoria social muestra que la población ha encontrado, enalgunos casos, mecanismos de salvaguarda para conservar la ritualidad, pero en otros, la pérdida paulatina de técnicas artesanales. La etnografía y la observación participante fueron parte de la metodología para conocer a estos hombres y mujeres que sostienen y mantienen la memoria ancestral. A través de la guía acertada de interlocutoras calificadas, el recurso fotográfico y las grabaciones, se captaron diferentes momentos y actividades que se usaron como recursos de apoyo. La información se devolvió a la comunidad a través de dos productos: el primero, un folleto con la biografía de los portadores y sus técnicas que fue entregado en cada localidad. El segundo, la donación al respectivo gobierno autónomo descentralizado (GAD) de 14 retratos fotográficos de los Tesoros Humanos Vivos (THV), personajes representativos de la región.
title: Comparative Study into the Interlayer Bond Strength of 3D Printed Mortar: Underwater vs. Air Environments
Creators: name: Srinivas, Dodda
name: Panda, Biranchi
name: Sitharam, T.
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: Underwater concrete
subject: washout resistance
subject: 3D concrete printing
subject: interlayer bond strength
subject: microstructure
subject: 62

description: For 3D printable concrete, interlayer bond strength is an important consideration. Several studies have confirmed the lack of bond strength attributed to air entrapment, lack of surface roughness, thixotropy of mix, water evapo- ration and printing parameters. However, the same conclusion may not be extended to understand the layer bonding behavior for underwater printed specimens. The present study utilizing anti-washout admixture (AWA) shows that AWA-mixed concrete (H7) when printed underwater has 13.9% and 18.2% lower bond strength in the Y and Z directions, respectively compared to the specimens printed in air. Notably, the absence of AWA in the control mix (C) resulted in further reduction of bond strength (up to maximum 41.4%) in the underwater environment with 5-minute interlayer time gap. Micro-CT analysis of pore structure revealed that the volumetric pore size distribution in the interlayers significantly influences the bond strength behavior of specimens printed in both air and underwater. In-line monitoring of the printing process detected the settlement of washed binder near the layer interface, leaving a distinct white line mark in the hardened printed specimen. Optimal interlayer time gaps were found to be beneficial for enhancing bond strength of mixtures containing AWA, attributed to pore structure refinement due to settled binder and increased extrusion pressures during underwater printing.
description: Digital Concrete 2024 - Supplementary Proceedings
title: Production of high-precision formwork elements using parametrically programmed concrete extrusion and machining
Creators: name: Abstoss, Marvin
name: Funke, Henrik
name: Gelbrich, Sandra
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: additive manufacturing
subject: sustainability
subject: material cycle
subject: digital and automated planning
subject: parametric programming
subject: 62

description: The paper presents an additive process for the sustainable production of recyclable formwork elements. The production is based on digitally planned concrete extrusion and milling in the fresh and also in the hardened state and the subsequent moulding of the model with casting resin. As part of the research, a clinker-reduced concrete mixture was developed and characterized. The clinker-reduced concrete is extruded close to the final contour to create the model for a formwork element. Afterwards the printed component is subjected to high-precision processing in the fresh and afterwards in hardened state of the concrete. Processing too early leads to smearing on the surface. Too late initial machining results in less possible infeed and increased tool wear. The resulting models are used for the production of flexible cast resin formwork elements. After using the extruded and machined formwork elements, a recycling process is applied and the recycled material can be fed back into the printing process. The resulting material cycle increases resource efficiency, which is the key to success for the sustainable production of precast concrete elements.
description: Digital Concrete 2024 - Supplementary Proceedings
title: Development of a Tool for generating a constant Volume Flow with Peristaltic Pumps for robot-controlled Concrete Extrusion
Creators: name: Lindner, Marco
name: Gliniorz, Ralf
name: Funke, Henrik
name: Gelbrich, Sandra
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: concrete extrusion
subject: constant volume flow
subject: peristaltic pumps
subject: 3D concrete printing
subject: lightweight construction
subject: industry 4.0
subject: 62

description: Concrete extrusion in the field of additive manufacturing is a complex process in which material, conveying technology, strategy and robot parameters must be specifically coordinated. According to the state of the art, screw pumps with a constant delivery volume are used to convey the concrete. The high shear rates associated with this conveying principle are a disadvantage. For example, mixed reinforcement fibers are damaged so that this fiber reinforcement loses its force-absorbing function. Another type of pump is the peristaltic pump, which is gentle on materials. This pump delivers discontinuously, so that no extrudates with a constant cross-section can be produced. The aim of this work is the development and testing of a device design for the realization of a constant discharge rate with peristaltic pumps and their experimental validation.
description: Digital Concrete 2024 - Supplementary Proceedings
title: Rheological and 3D printing assessment of sisal fiber mortar for architectural applications
Creators: name: Varela, Hugo
name: Pimentel Tinoco, Matheus
name: Mendoza Reales, Oscar
name: Toldeo Filho, Romildo
name: Barluenga, Gonzalo
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: 3D printing mortar
subject: Sisal fibers
subject: Rheology
subject: Printability
subject: Open time window
subject: 62

description: 3D printing mortars are becoming a focus of interest for architectural appli-cations, due to their ability to produce free shaping designs. However, there are still some printability and performance issues that require further research, as the incorporation of reinforcing and the improvement of sustainabil-ity by reducing its carbon footprint. Natural fibers become an excellent alterna-tive to overcome these problems, enhancing mortar performance. The aim of this study was to evaluate rheology and printability of mortars with sisal fibers (SF) for architectural 3D printing applications. A reference cement mortar with 0-0.6 mm sand and 0.45 water to cement ratio was designed. Then, 13 mm length SF in volumetric fractions (VF) of 0.5, 1 and 1.5%, and 6.5 mm length SF at 1%VF were added. Four tests were carried out to evaluate fresh rheologi-cal and mechanical properties of mortars: flow table test, self-weight cone-penetration test, displacement-controlled cone-penetration test and uniaxial fresh compression test. Mortar printability was evaluated with a manual extrud-er and a 3D robotic printer, reaching an open time window of 90 minutes. It was observed that 3D printing produced an alignment of SF. Larger SF amount gradually increased initial yield stress and structural build up. The VF and length of SF maintained initial compressive yield stress, enhancing tenacity of fresh material. Mortars with low VF of SF showed good printability, although higher SF VF produced some printing issues due to their lower pumpability.
description: Digital Concrete 2024 - Supplementary Proceedings
title: Influence of Illitic Calcined Clay on Properties of Mixtures for 3D Concrete Printing
Creators: name: Joon, Hillar
name: Petrimägi, Lauri
Publisher: name: Universitätsbibliothek Braunschweig
Year: 2024
Subjects: subject: 3D concrete printing
subject: supplementary cementitious materials
subject: illitic calcined clay
subject: 62

description: This paper focuses on the use of illitic calcined clay (CC) as supple-mentary cementitious material (SCM) partly replacing Portland cement (OPC) in binders for mixtures suitable for 3D Concrete Printing (3DCP). This kind of re-placement would be ecologically and economically feasible and meets a global need to reduce CO2 emission in construction industry. Availability and abun-dance throughout the world, especially of illitic clays, makes CC a potential SCM in concrete technology. Influence of CC additions of two different levels of fineness on properties of mixtures, important from a technological point of view in 3DCP is examined. On fresh concrete mixtures, flow of a Hägermann cone was measured at different CC percentages in the binders. Behaviour of CC in ternary blends with OPC and limestone filler (LF) for mixtures, containing al-so chemical admixtures and fibres was also examined. An experimental mixture from a local producer of dry mixes was used for that purpose. Print of an L-shape wall element with attended measurement of essential printing parameters, flowability, extrudability and buildability was performed. A mixture with a ter-nary blend binder containing OPC-LF-CC in proportion of 50-30-20 was used for Gantry-type 3D concrete printer. It was found that CC additive in ternary blend binders increases water demand of the mixture and has positive influence on strength. From a printing point of view, CC gives extra properties to the mix-tures by improving their extrudability, buildability and shape retention.
description: Digital Concrete 2024 - Supplementary Proceedings
Unveiling the radio counterparts of two binary AGN candidates: J1108+0659 and J1131-0204
Creators: name: Bondi, M.
name: Pérez-Torres, M. A.
name: Piconcelli, E.
name: Fu, H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The sources SDSS\,J113126.08-020459.2 and SDSS\,J110851.04+065901.4 are two double-peaked [O III] emitting AGN, identified as candidate binary AGNs by optical and near infrared (NIR) observations. We observed the two sources with high resolution Very Long Baseline Interferometry (VLBI) using the European VLBI Network at 5\,GHz, reduced VLA observations at three frequencies available for one of the sources, and used archival HST observations. For the source SDSS\,J113126.08-020459.2, the VLBI observations detected only one single compact component associated with the eastern NIR nucleus. In SDSS\,J110851.04+065901.4, the VLBI observations did not detect any compact components, but the VLA observations allowed us to identify a possible compact core in the region of the north-western optical/NIR nucleus. In this source we find kpc-scale extended radio emission that is spatially coincident to the ultraviolet continuum and to the extended emission narrow line region. The UV continuum is significantly obscured since the amount of extended radio emission yields a star formation rate of about 110 \msunyr, which is an order of magnitude larger than implied by the observed ultraviolet emission. Our analysis confirms the presence of only one AGN in the two candidate binary AGNs.
description: Accepted for publication in Astronomy & Astrophysics
Ausencia del pensamiento en el arte: aportes de Jean Luc Marion
Creators: name: Novoa, Francisco
Publisher: name: figshare
Year: 2023
Subjects: Phenomenology

description: En este artículo se quiere ahondar en la propuesta que Jean Luc Marion ofrece sobre el ídolo en relación con el icono y cómo esta puede aportar al pensamiento artístico. Para esto, abordaremos la relación del ídolo con los distintos rostros que pretenden mostrarse como tal y luego el pensamiento sobre el icono cristiano. En este sentido, nos adentraremos en la propuesta estética cristiana y la posibilidad de pensar un arte a posteriori, es decir, que surge desde un acontecimiento, extendiéndolo y haciéndolo más visible.