cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigation of Fine-Scaled Reservoir Heterogeneity within the Sulphur Mountain Formation
Creators: name: Toews, Zachary Dietrich
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Hyperspectral
subject: Montney
subject: Heterogeneity
subject: Sulphur Mountain
subject: Geology
subject: FOS: Earth and related environmental sciences

description: This study integrates two perspectives to comprehensively assess the geological and reservoir characteristics of the Sulphur Mountain Formation within the Western Canadian Sedimentary Basin, an outcrop analog of the Lower Triassic Montney Formation, one of Canada's largest unconventional plays. The unconventional resource plays' reservoir quality and production optimization relies on a nuanced understanding of geomechanical rock properties and their influence on fractures and fracture networks in the subsurface. Challenges in studying subsurface fractures, particularly the lateral constraints of petrophysical and core data, have prompted the utilization of outcrop analogs to enhance understanding. This research examines the rock fabric control on natural fractures in the Montney Formation's outcrop-equivalent, employing an up to 36 m thick, well-exposed outcrop of the Sulphur Mountain Formation. Unmanned aerial vehicle (UAV) based photomosaics are utilized to characterize the outcrop, evaluating natural fracture distribution. A novel methodology utilizing high-resolution scanned core images is introduced to quantify lamination and assess sedimentary fabric. Results indicate a discernible relationship between sedimentary fabric and fracture characteristics, shedding light on the geometry of fracture networks and aiding predictions of fracture behavior in fine-grained rocks in the subsurface. Additionally, this study investigates fine-grained reservoir heterogeneity, a critical factor for hydraulic fracturing operations, influenced by parameters such as clay content, lamination, and bedding planes. Hyperspectral imaging emerges as a valuable non-destructive analytical technique, effectively measuring composition without damaging the sample. Its application overcomes limitations of geophysical well logs in heterogeneous lithologies, playing a crucial role in defining heterogeneity. This research further identifies Hyperspectral core scanning as a valuable tool for characterizing fine-scale facies variations and underscores the challenge of constructing an accurate compositional model when the training data has a low variance. To enhance model correlation, the study suggests optimizing the data variance to measurement error range ratio. X-ray diffraction (XRD) is proposed as a tool to increase data variance, addressing the heightened standard deviation observed in the investigation. This integrated project emphasizes the pivotal role of hyperspectral imaging in enhancing core analysis and provides a holistic perspective on reservoir heterogeneity in unconventional plays.
Resonant magnetic fields from inflation
Creators: name: Byrnes, Christian T.
name: Hollenstein, Lukas
name: Jain, Rajeev Kumar
name: Urban, Federico R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a novel scenario to generate primordial magnetic fields during inflation induced by an oscillating coupling of the electromagnetic field to the inflaton. This resonant mechanism has two key advantages over previous proposals. First of all, it generates a narrow band of magnetic fields at any required wavelength, thereby allaying the usual problem of a strongly blue spectrum and its associated backreaction. Secondly, it avoids the need for a strong coupling as the coupling is oscillating rather than growing or decaying exponentially. Despite these major advantages, we find that the backreaction is still far too large during inflation if the generated magnetic fields are required to have a strength of order 10^{-15} Gauss today on observationally interesting scales. We provide a more general no-go argument, proving that this problem will apply to any model in which the magnetic fields are generated on subhorizon scales and freeze after horizon crossing.
description: 13 pages + 7 pages of appendices and references, 3 figures, matches published version
Design, Development, and Examination of New Lightweight High-Entropy Alloy for Structural Applications
Creators: name: Alam, Intekhab
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Lightweight high-entropy alloy
subject: Phase stability rules
subject: AlTiCuZn-based LHEA
subject: Thermal degradation
subject: Mechanical property
subject: Metallurgy
subject: Materials Science

description: The use of lightweight materials for structural applications can reduce energy consumption and greenhouse gas emissions towards climate change mitigation. However, lightweight materials must be carefully designed without compromising strength and safety; hence the continued search for high specific-strength materials. This thesis contributes to these efforts: to discover, develop, and characterize lightweight high-entropy alloys (LHEAs) for structural applications. Obtaining solid-solution (SS) in alloys instead of intermetallic (IM) compounds is usually desirable because IM compounds can detrimentally reduce ductility and corrosion resistance. HEAs are multi-principal element alloys in which complex pair-wise interactions between constituent elements can favour IM compound formation. As such, empirical rules for predicting SS formation (over IM compound) and crystal structure in HEAs exist—atomic size difference, enthalpy of mixing, mixing entropy, entropy to enthalpy ratio, Pauling electronegativity difference, and valence electron concentration. However, these rules break down. This thesis first re-examines the empirical rules’ effectiveness by conducting a systematic study that isolates the effect of processing pathways known to impact phase stability. A new conservative phase and SS formation criteria for AlTiCuZn-based LHEAs are proposed; the revised rules are verified by developing new LHEAs that are accurately predicted—AlTi0.37CuZn0.97 and AlTi0.56Cu1.24Zn1.2. As a next step, the thermal degradation pattern of a new dual-phase AlTi0.45CuZn LHEA (ρ=5.71 g/cc) from phase decomposition to evaporation was further investigated. Using multimodal advanced characterization techniques, AlTi0.45CuZn is found to be thermally-stable up to between 250 and 360 °C. Beyond this limit, multistep decomposition occurs: phase decomposition at ~360 °C forms Al-Ti phase off the AlTi0.45CuZn matrix due to the largest negative mixing enthalpy for Al-Ti than other binary pairs; Zn evaporation at ~750 °C due to its faster evaporation rate than other constituent elements; and LHEA melting at 880 °C. The LHEA possesses sluggish grain growth and better nano-indentation hardness among other LHEAs of close density range due to combined grain size and phase strengthening effects. This work offers new insight into the processing-structure-properties relationship of LHEAs and further advances the field’s understanding of LHEA thermal deteriorative behavior in structural applications at elevated temperatures.
Adaptation and migration of a population between patches
Creators: name: Mirrahimi, Sepideh
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: A Hamilton-Jacobi formulation has been established previously for phenotypically structured population models where the solution concentrates as Dirac masses in the limit of small diffusion. Is it possible to extend this approach to spatial models? Are the limiting solutions still in the form of sums of Dirac masses? Does the presence of several habitats lead to polymorphic situations? We study the stationary solutions of a structured population model, while the population is structured by continuous phenotypical traits and discrete positions in space. The growth term varies from one habitable zone to another, for instance because of a change in the temperature. The individuals can migrate from one zone to another with a constant rate. The mathematical modeling of this problem, considering mutations between phenotypical traits and competitive interaction of individuals within each zone via a single resource, leads to a system of coupled parabolic integro-differential equations. We study the asymptotic behavior of the stationary solutions to this model in the limit of small mutations. The limit, which is a sum of Dirac masses, can be described with the help of an effective Hamiltonian. The presence of migration can modify the dominant traits and lead to polymorphic situations.
title: Dissimilar Laser Beam Welding of Titanium to Stainless Steel Using Pure Niobium as Filler Material in Lap Joint Configuration
Creators: name: Wiegand, Michael
name: Kimm, Alexander
name: Sommer, Niklas
name: Marks, Linda
name: Kahlmeyer, Martin
name: Böhm, Stefan
Publisher: name: Universität Kassel
Year: 2023
Subjects: subject: pulsed laser beam welding
subject: dissimilar welding
subject: medical technology
subject: intermetallic compounds
subject: 600
subject: Laserschweißen
subject: Schweißen
subject: Intermetallische Verbindungen
subject: Medizintechnik

description: Gefördert durch den Publikationsfonds der Universität Kassel
Stochastic augmented Lagrangian method in shape spaces
Creators: name: Geiersbach, Caroline
name: Suchan, Tim
name: Welker, Kathrin
Publisher: name: Weierstrass Institute
Year: 2023
Subjects: subject: augmented Lagrangian
subject: stochastic optimization
subject: uncertainties
subject: inequality constraints
subject: Riemannian manifold
subject: shape optimization
subject: geometric constraints
subject: 49Q10
subject: 60H35
subject: 35R15
subject: 49K20
subject: 41A25
subject: 60H15
subject: 60H30
subject: 35R60

description: In this paper, we present a stochastic Augmented Lagrangian approach on (possibly infinite-dimensional) Riemannian manifolds to solve stochastic optimization problems with a finite number of deterministic constraints. We investigate the convergence of the method, which is based on a stochastic approximation approach with random stopping combined with an iterative procedure for updating Lagrange multipliers. The algorithm is applied to a multi-shape optimization problem with geometric constraints and demonstrated numerically.
Essays in macroeconomics : cycles and frictions
Creators: name: Lupoli, Mario
Publisher: name: The University of St Andrews
Year: 2023
Subjects: subject: Monetary policy
subject: DSGE
subject: Structural VAR
subject: Leaning against the wind
subject: Granger causality
subject: Shimer puzzle
subject: Nash wage elasticity
subject: Monetary surprise
subject: HB172.5L8
subject: Macroeconomics
subject: Monetary policy

description: This thesis contributes to different literatures in macroeconomics with frictions. In the first two Chapters I consider imperfections in the credit market and how these can amplify monetary policy shocks. I start from a purely empirical model, which identifies monetary policy shocks and then I develop a structural model with an explicit market for mortgage loans intermediated by a banking sector. Households and banks are each facing a different optimisation program. I show that this model better captures the volatility of macroeconomic aggregates than alternative frictionless cases. This richer modelling setting assigns a more complicated role to the monetary authority, as the policy rate influences asset prices, nominal debt and bank profitability in addition to intertemporal consumption. The Third Chapter is concerned with wage rigidity and how to measure it. We define it as relative to the wage one would expect under Nash bargaining. Then we develop a statistic for wage rigidity, the Nash Wage Elasticity (NWE) by regressing actual wages on the Nash bargained wage. Most of our calibrations yield a NWE between 0 and 0.1, signifying that actual wages are very rigid and that the Nash wage is a poor description of the business cycle. We calibrate a search and matching model to match our estimated NWE, showing how this modification translates into greater cyclical fluctuations. In the fourth Chapter I analyse the causal relation linking index investment to commodity future prices. I show that standard Granger causality results cannot be taken at face value given the extraordinary movement in prices during the Great Financial Crisis. I apply instead a Time-Varying Granger test apt to gauge the evolution of the causal relation, showing how future prices are endogenous to index investment flows at particular points in time, generally supporting the hypothesis of financialization in the commodity market.
An Archaeology of Resilience in Rural Landscapes of Southern Italy, c. 300-1000
Creators: name: Munro, Matthew J.
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Landscape Archaeology
subject: Resilience
subject: Societal Collapse
subject: Complexity Science
subject: Archaeology
subject: History--Ancient
subject: History--Medieval

description: Developing an archaeology of resilience is crucial for understanding the dynamics of past social systems and the paradox that arises between societal collapse and regeneration and the apparent longevity of rural lifeways. The landscape of Southern Italy provides a robust historical case study in which to understand the role that resilience plays in human decision-making in the rural world during the collapse of the western Roman Empire. The panarchy metamodel provides a robust suite of analyses in which to investigate this region focusing on the adaptive cycle heuristic to visualize social change and estimate relative capacities for resilience in human-environmental systems. These systems are further understood through the concepts of complexity science. When more explicit concepts of social change are brought into panarchy through social resilience and ecohistorical co-evolutionary perspectives, the adaptive cycle becomes a robust tool through which to explain social collapse and regeneration. Developing a panarchy requires an investigation of landscape on different spatial and temporal scales through the history and archaeology of Southern Italy over Late Antiquity and the early Middle Ages. To build the model, adaptive cycles of the political, economic, and urban systems are designed and considered to influence the development of the landscape. Additionally, a robust series of shocks and stressors to these systems must be made explicit. Environmental, climatological, military, and biological impacts are outlined in detail. Once this evidence is compiled and the panarchy is designed, it becomes a tool to aid in landscape analysis. Rather than apply this model to the southern landscape generally, the Basentello Valley provides a case study on which to test the heuristic capability of panarchy. The historical and archaeological evidence for this landscape is well developed for Late Antiquity and more meagre for the early Middle Ages, leaving interpretive potential for panarchy and its complexity perspective to help explain the development of this rural landscape. Panarchic analysis reveals that rural capacities for resilience are tied closely to the capacity for self-organization. Despite this, the collapse of the western Roman Empire deeply affected Southern Italy and collapsing political, economic, and urban systems made rural social change inevitable. A resilience perspective teaches us that trajectories of complex adaptive systems are impossible to predict and we can only understand them in retrospect. If the goal is to lessen the impacts of social collapse, a capacity for resilience through self-organization on local scales provides the best chance for regeneration to result in a sustainable present that learns from the past and prepares better for the future.
Affine.m - Mathematica package for computations in representation theory of finite-dimensional and affine Lie algebras
Creators: name: Nazarov, Anton
Publisher: name: arXiv
Year: 2011
Subjects: subject: Representation Theory (math.RT)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: G.2.1; G.4
subject: 17B10, 17-04,

description: In this paper we present Affine.m - program for computations in representation theory of finite-dimensional and affine Lie algebras and describe implemented algorithms. Algorithms are based upon the properties of weights and Weyl symmetry. The most important problems for us are the ones, concerning computation of weight multiplicities in irreducible and Verma modules, branching of representations and tensor product decomposition. These problems have numerous applications in physics and we provide some examples of these applications. The program is implemented in popular computer algebra system Mathematica and works with finite-dimensional and affine Lie algebras.
description: 29 pages, 7 figures, updated to match published version
Index to Minutes of Meetings of the Executive Committee & the Board of Trustees, 1911-1946, "National-C"
Creators: name: Carnegie Corporation Of New York
Publisher: name: Columbia University
Year: 2018
Subjects: Corporate meetings
Charitable uses, trusts, and foundations

description: The following microfilm is a copy of 5 x 8 Kardex cards hitherto used in the Cumulative Index to the Minutes of the Executive Committee and of the Board of Trustees of the Carnegie Corporation of New York, from the first meeting of the Trustees (November 10, 1911) through the 22nd meeting of the Executive Committee (September 17, 1946). The Cumulative Index was initiated during the early days of the Corporation when the offices of the President, the Secretary, and the Treasurer were separately organized, each with its own system of records. It was maintained by Durand R. Miller, first as secretary to the Secretary of the Corporation, James Bertram, and later as Record Clerk of the Corporation. The entries in the Cumulative Index are duplications of those recorded in the index of each bound volume of Minutes.
Additional file 1 of Degradation of epigallocatechin and epicatechin gallates by a novel tannase TanHcw from Herbaspirillum camelliae
Creators: name: Lei, Jia
name: Zhang, Yong
name: Ni, Xuechen
name: Yu, Xuejing
name: Wang, Xingguo
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Additional file 1: Fig. S1. Alignment of amino acid sequences of microbial tannases and 4 putative tannases in H. camelliae WT00C. * pfam07519: a conserved domain of tannases predicted by NCBI database (https://www.ncbi.nim,nih.gov/conserved domain/tannase); Acinetobacter: A. bayli (Q8RLZ8); Xanthomonas: X. campestris (Q8P8Y5); Agrobacterium: A. fabrurn (Q8UK62); Bradyrhtzobium: B. japonicum (Q89C36); Pseudomonas: P. syringae (Q88IB4); Aspergillus: A. niger (EHA25030); Tan1-4: putative enzymes of Herbaspirillum camelliae. Fig. S2. Kinetic parameter determination of TanHcw at the optimal temperatures and pH. (a) Lineweaver-Burk plot for substrates EGCG at pH7.0 and 40 ºC; (b) Lineweaver-Burk plot for substrates ECG at pH7.0 and 40 ºC; (c) Lineweaver-Burk plot for substrates MG at pH6.0 and 30 ºC. Table S1. Kinetic parameters of TanHcw compared with other tannases.
Non-exponential one-body loss in a Bose-Einstein condensate
Creators: name: Knoop, S.
name: Borbely, J. S.
name: van Rooij, R.
name: Vassen, W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have studied the decay of a Bose-Einstein condensate of metastable helium atoms in an optical dipole trap. In the regime where two- and three-body losses can be neglected we show that the Bose-Einstein condensate and the thermal cloud show fundamentally different decay characteristics. The total number of atoms decays exponentially with time constant tau; however, the thermal cloud decays exponentially with time constant (4/3)tau and the condensate decays much faster, and non-exponentially. We show that this behaviour, which should be present for all BECs in thermal equilibrium with a considerable thermal fraction, is due to a transfer of atoms from the condensate to the thermal cloud during its decay.
description: The intuitive explanation of the atomic transfer effect has been corrected
Speocera cuyapo Li & Li 2019, sp. nov.
Creators: name: Tong, Yanfeng
name: Li, Fengyuan
name: Song, Yang
name: Chen, Haifeng
name: Li, Shuqiang
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Ochyroceratidae
Speocera
Speocera cuyapo

description: Speocera cuyapo Li & Li sp. nov. (Figs 20, 58D) Material examined. Holotype ♀ (IZCAS), Philippines, Luzon Island, Nueva Ecija Province, Cuyapo City, Forest, on a steep slope, in the litter. (15º47.809′N, 120º39.329′E), elev. 60m, 22.V.2015, leg. F. Ballarin & Y. Li. Etymology. The specific name is derived from the type locality; noun. Diagnosis. The new species is similar to S. apo Deeleman-Reinhold, 1995 but can be distinguished by the posteriorly curved tip of the afferent spermathecae (Fig. 20B). The tip of the afferent spermathecae is curved anteriorly in S. apo (Deeleman-Reinhold, 1995: figs 223–224). Description. Female. Total length 1.19; carapace length 0.49; carapace width 0.41; abdomen length 0.66; abdomen width 0.49. Prosoma: carapace pyriform, narrowing gradually anteriorly; yellow, strongly suffused with purplish pattern (Fig. 20C); pars cephalica flat; fovea not visible. Sternum light yellow, suffused with purplish color, as long as wide (Fig. 20D). Endites light yellow, suffused with purplish tinge; with serrula; labium light yellow, suffused with purplish tinge. Clypeus nearly vertical; short. Chelicerae light yellow; promargin with a series of six teeth reaching the lamina; retromargin with two very small denticles (Fig. 58D). Eyes: six contiguous eyes surrounded by black pigmentation, PME smallest, PLE largest (Fig. 20C). Opisthosoma oval; purplish (Fig. 20D). Legs light yellow; leg lengths I, II, IV missing; III 1.35 (0.40, 0.13, 0.30, 0.29, 0.23). Genitalia. Internal genitalia with afferent spermathecae short, not extending past the sides of the abdomen; tip of the afferent spermathecae curved posteriorly from epigastric furrow (Fig. 20B); spermathecae small, round (Fig. 20A). Male. Unknown. Distribution. Known only from the type locality.
description: Published as part of Tong, Yanfeng, Li, Fengyuan, Song, Yang, Chen, Haifeng & Li, Shuqiang, 2019, Thirty-two new species of the genus Speocera Berland, 1914 (Araneae: Ochyroceratidae) from China, Madagascar and Southeast Asia, pp. 1-75 in Zoological Systematics 44 (1) on page 26, DOI: 10.11865/zs.201901, http://zenodo.org/record/5366923
A Primary Epithelial-Immune Cell Co-Culture Model to Investigate the Interactions between the Intestinal Epithelium and Innate Immune Cells in Response to Clostridioides difficile toxins
Creators: name: Smith, Lauren
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine

description: Clostridioides difficile is a leading cause of healthcare-associated diarrhea in the United States, with symptoms ranging from mild diarrhea to toxic megacolon. Upon disruption of the colonic epithelium by C. difficile toxins A and B (TcdAB), epithelial cells are thought to signal to underlying immune cells including group-3 innate lymphoid cells (ILC3s) and macrophages to mount an effective immune response. ILC3s and macrophages both modulate pathogen defense (including C. difficile), tissue repair, and inflammation. ILC3s do so largely through interleukin- 22 (IL-22) secretion, and macrophages do so through phagocytosis and the secretion of a wide array of cytokines and chemokines. However, pathways by which the intestinal epithelium responds to C. difficile TcdAB to affect underlying immune cells, such as ILC3s and macrophages, remain poorly understood. We therefore hypothesized that the response to C. difficile toxins throughout the colonic epithelium and underlying tissue is modulated by interactions between the intestinal epithelium, ILC3s and IL-22, and macrophages. To test this hypothesis and address the limitations of cancer cell lines and single lineage models, we developed two novel primary epithelial cell-innate immune cell co-culture models to investigate epithelial-immune interactions in response to C. difficile toxins in vitro. Co-culture of monolayers with either MNK-3 (ILC3-like) cells or bone marrow derived macrophages did not influence monolayer permeability in response to TcdAB. However, in the process of characterizing these models, we established that MNK-3 cells and macrophages remained viable in co-culture and released relevant mediators with respective stimulation. While MNK-3 cells were not activated in co-culture, macrophages were activated by both monolayer media and epithelial presence in co-culture. With these novel experiments, we have provided groundwork for the further development of multi-lineage models.
Characterization of implanted seed orientation and displacement dynamics with application to the design of non-uniform source strength treatment plans for prostate brachytherapy
Creators: name: Chng, Nicholas T.
Publisher: name: University of British Columbia
Year: 2012

description: Low dose rate prostate brachytherapy is one of the most effective treatments for prostate cancer currently available. It involves the implantation of approximately one hundred small radioactive sources, or ‘seeds’, into the prostate gland. This is accomplished by depositing the seeds transperineally via 16-30 long needles. In British Columbia, over three thousand patients have been treated since 1998 using this technique, and fewer than 10% have suffered a recurrence to date. One of the principal challenges in low dose rate prostate brachytherapy is the limited reliability with which precise doses to the prostate and surrounding organs can be achieved. This is due both to the difficulty in accurately delivering the seeds to their planned positions, as well as movement of the seeds in the post-implant period during the resolution of procedure-induced edema. This uncertainty can lead to undetected deficits in the dose necessary to control the cancer. As patients with more advanced disease are being considered for brachytherapy, these deficits may have greater consequences on oncological outcomes. Treatment uncertainty also increases the risk of side effects, which have the potential to be severe. The overall aim of this thesis is to improve the scope and accuracy with which the dose distribution of stranded seeds can be measured after implant. This involved the development of an algorithm to uniquely identify seeds in post-implant CT data, along with a method to determine their orientation to improve dosimetric accuracy. An analysis of the displacement and migration patterns of seeds in the interval during the resolution of prostate edema was also undertaken. These results identified dosimetric deficiencies and modes of seed loss which have the potential to be rectified by the use of implants containing seeds of non-uniform strength (‘mixed-activity’ implants). Such treatments use fewer needles and may also reduce the incidence of treatment related urinary morbidity. Although the concept of mixed-activity implants is not novel, the algorithm developed to identify seeds after implant enables the post-implant assurance of their dosimetric quality in a clinically feasible way. This thesis concludes with a study investigating the dosimetric benefits of mixed-activity implants.
Structure-based analysis of CysZ-mediated cellular uptake of sulfate
Creators: name: Assur, Zahra
name: Liu, Qun
name: Clarke, Oliver B.
name: Belcher Dufrisne, Meagan Leigh
name: Wiriyasermkul, Pattama
name: Giesem, M. Hunter
name: Leal-Pinto, Edgar
name: Kloss, Brian
name: Tabuso, Shantelle
name: Love, James
name: Punta, Marco
name: Banerjee, Surajit
name: Rajashankar, Kanagalaghatta R.
name: Rost, Burkhard
name: Logothetis, Diomedes
name: Quick, Matthias
name: Hendrickson, Wayne A.
name: Mancia, Filippo
Publisher: name: Columbia University
Year: 2018
Subjects: Cytology
Sulfates
Extracellular matrix
Cell physiology
Biophysics

description: Sulfur, most abundantly found in the environment as sulfate (SO42-), is an essential element in metabolites required by all living cells, including amino acids, co-factors and vitamins. However, current understanding of the cellular delivery of SO42- at the molecular level is limited. CysZ has been described as a SO42- permease, but its sequence family is without known structural precedent. Based on crystallographic structure information, SO42- binding and flux experiments, we provide insight into the molecular mechanism of CysZ-mediated translocation of SO42- across membranes. CysZ structures from three different bacterial species display a hitherto unknown fold and have subunits organized with inverted transmembrane topology. CysZ from Pseudomonas denitrificans assembles as a trimer of antiparallel dimers and the CysZ structures from two other species recapitulate dimers from this assembly. Mutational studies highlight the functional relevance of conserved CysZ residues.
LEO-Transfer News: Isoliert oder integriert? Geringe Literalität im ländlichen Raum
Creators: name: Grotlüschen, Anke
name: Buddeberg, Klaus
name: Dutz, Gregor
name: Skowranek, Kristin
Publisher: name: Universität Hamburg
Year: 2023
Subjects: Geringe Literalität
Literale Praktiken
Ländlicher Raum
Kleinstadtforschung

description: In dieser Reihe stellen wir verschiedene Kapitel aus einer interdisziplinären Publikation vor, die auf Daten der LEO Studie 2018 – Leben mit geringer Literalität basiert. Band 14 der Edition ZfE „Interdisziplinäre Analysen zur LEO-Studie 2018 – Leben mit geringer Literalität. Dieser Beitrag stellt Ergebnisse aus dem Kapitel „Leben mit geringer Literalität im ländlichen Raum“ von Klaus Buddeberg und Carola Iller vor.
description: {"references": ["Buddeberg, Klaus; Iller, Carola (2023): Leben mit geringer Literalit\u00e4t im l\u00e4ndlichen Raum. In: Anke Grotl\u00fcschen, Klaus Buddeberg und Heike Solga (Hg.): Interdisziplin\u00e4re Analysen zur LEO-Studie 2018 \u2013 Leben mit geringer Literalit\u00e4t. Vertiefende Erkenntnisse zur Rolle des Lesens und Schreibens im Erwachsenenalter. Wiesbaden: Springer VS (Edition ZfE, 14), S. 301-330.."]}
title: Horace and Iambos: a literary study of the sexual vocabulary, imagery, and metaphors in the Epodes
Creators: name: Baker, Lee George
Publisher: name: University of Glasgow
Year: 2025

description: This thesis examines the use of sexual language, imagery, and metaphors in Horace's Epodes, highlighting how these elements play a role in his refashioning of the iambic genre. By exploring Horace's incorporation of Archaic iambic traditions from poets like Archilochus and Hipponax, along with his engagement with earlier Latin poets such as Lucilius and Catullus, this study shows that Horace's use of explicit sexual content goes beyond mere vulgarity. Instead, it serves broader literary aims, including critiques of societal norms, explorations of personal vulnerability, and reflections on the poet's literary identity. Horace's originality is evident in how he merges iambic conventions with a distinctly Roman perspective, giving voices to marginalised figures, especially women, while employing self-ridicule as a tool for personal and poetic self-reflection. Through a layered combination of invective, humour, and self-satire, Horace positions himself as both a successor and an innovator within the iambic tradition, adapting its conventions for a Roman audience while preserving its sharp satirical edge. Ultimately, this thesis argues that Horace creates a distinct space for reflecting on sexuality and literary ambition.
Pachycorynus dimidiatus MOTSCHULSKY 1858
Creators: name: Bordoni, A.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Pachycorynus
Pachycorynus dimidiatus

description: Pachycorynus dimidiatus MOTSCHULSKY 1858
M a t e r i a l s t u d i e d: Yunnan, Manfei, Nabanhe Conv., Li & Tang 10.I.2004, 1, 3 (SNUC), 1, 1 (cB).
G e o g r a p h i c a l d i s t r i b u t i o n: This species is known from almost all the areas of the Oriental Region (BORDONI 2002). New record for China.
description: Published as part of Bordoni, A., 2013, New data on the Xantholinini from China. 24. New genus, new species and new records of the Shanghai Normal University collection (Coleoptera, Staphylinidae) 244 ° contribution to the knowledge of the Staphylinidae, pp. 1745-1797 in Linzer biologische Beiträge 45 (2) on page 1746, DOI: 10.5281/zenodo.10273196
Monte Carlo Studies in the Applications of Magnetic Fields to Electron Radiotherapy
Creators: name: Groeneveld, Jacob
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Monte Carlo
subject: Non-Uniform Magnetic Fields
subject: PENELOPE
subject: Radiation Therapy
subject: Electron Radation Therapy
subject: Electron Source Model
subject: Magnetic Collimation
subject: Electricity and Magnetism
subject: Elementary Particles and High Energy

description: In electron radiation therapy, conforming the radiation dose to the tumor is important, yet challenging due to electron scatter by air molecules. The conventional approach involves placing a fixed metal collimator near the patient’s skin to block scattered radiation, providing a static treatment. This study explores the dosimetric impact of magnetic fields on therapeutic electron beams and the potential application of magnetic fields in modulated electron radiation therapy (MERT). Employing Monte Carlo methods, we developed experimentally validated source models with electron beams shaped by the multileaf collimator. Additionally, we calculated magnetic field maps for specific coil configurations and devised a method to implement non-uniform magnetic fields into PENELOPE, a Monte Carlo code system for radiation transport. Our approach facilitates easy evaluation of different coil-generated magnetic fields. Our framework was used to study the impact of magnetic fields generated by solenoids on realistic electron beams. This showed that while simplistic simulations using uniform magnetic fields and mono-directional electron sources show promising results, simulations with realistic electron beams and the magnetic field generated by a solenoid reveal the complexities involved in maintaining electron fluence within realistic magnetic fields. Overall, this work lays the foundation for potential advancements in the application of magnetic fields in electron radiation therapy, underscoring the importance of accurate simulations when exploring innovative treatment modalities.
Synthetic charge-flux quantum liquids
Creators: name: Simula, Tapio P
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We apply rotating optical flux lattices to spinor Bose-Einstein condensates. Distinct quantum states emerge for fractional ratios of vortex charge density to optical flux density. We exhibit the calculated charge-flux states and discuss their topological structure and experimental signatures.
description: 4 pages, 3 figures
Development of visible-light-driven photocatalysts for the degradation of organic pollutants and the disinfection of microorganisms
Creators: name: Akintunde, Olufemi Oluseun
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Photocatalysis
subject: Heterogeneous catalysis
subject: Visible-light driven photocatalysis
subject: Material synthesis and characterization
subject: Nanomaterials
subject: Nanocomposites
subject: Nanocrystals
subject: Nanoparticles
subject: Wastewater treatment
subject: Organic contaminant degradation
subject: Microorganisms disinfection
subject: Self-disinfecting coated surfaces
subject: Engineering--Environmental

description: In this research, several visible-light driven photocatalysts were developed and their photocatalytic activities were evaluated in the removal of organic pollutants. Wastewater containing pathogen carriers such as total coliforms, and E. coli was tested for disinfection using the synthesized visible-light photocatalysts. Graphitic carbon nitride (GCN or g-C3N4), a visible-light driven photocatalyst, was synthesized from different precursors. Also, different composites of GCN such GCN/Ag2CrO4, and GCN/ZnO-Cu were synthesized. The purpose of these GCN composites is to enhance the photocatalytic activity of the GCN. Several characterization techniques were used to understand the physicochemical properties of the photocatalysts. The initial photocatalytic experiments, detailed in Chapter 3, were on degrading 4-CP under a royal blue LED (450 nm) using precursor-derived GCNs and GCN composites. The results show that the GCN/0.3Ag2CrO4 performed well with over 95% degradation of 4-CP. The second set of photocatalytic experiments, detailed in Chapter 4, were on investigating the degradation of 2,4-D and MCPP, BSA protein, SARS-CoV-2 (Covid-19) spike protein, cATP, and total coliforms/E. coli using the best performing GCN/0.3Ag2CrO4 in the first photocatalytic experiments and royal blue LED. Over 85% of 2,4-D and MCPP were simultaneously degraded, 77.5% of Covid-19 spike protein was achieved, and over one log reduction of cATP, total coliforms/E. coli was achieved in wastewater treatment. In Chapter 5 (third set of experiments), new sets of photocatalysts were synthesized. GCN/0.1ZnO-Cu3% performed best with over 65% of 4-CP degradation under royal blue LED. A complete 5.5 log reduction of coliforms-containing wastewater primary influent was achieved with the same photocatalyst. In Chapter 6, the best-performing GCN/ZnO-Cu nanocomposite in observed in chapter 5 was coated on a polyvinyl chloride (PVC) substrate and the performance was evaluated under a 5000K LED (400 – 700 nm). The result shows a 2-log reduction of the coliform-containing wastewater treatment on the self-disinfecting coated surface. To the best of our knowledge, this is the first research to investigate the comprehensive use and practical application of self-disinfecting coated surfaces under commercial and industrial light (5000K LED) irradiation. All our results demonstrate that compositing GCN with metals can degrade pollutants and disinfect wastewater under visible light irradiation.
Enhancement of field renormalization in scalar theories via functional renormalization group
Creators: name: Zappalà, Dario
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The flow equations of the Functional Renormalization Group are applied to the O(N)-symmetric scalar theory, for N=1 and N=4, in four Euclidean dimensions, d=4, to determine the effective potential and the renormalization function of the field in the broken phase. In our numerical analysis, the infrared limit, corresponding to the vanishing of the running momentum scale in the equations, is approached to obtain the physical values of the parameters by extrapolation. In the N=4 theory a non-perturbatively large value of the physical renormalization of the longitudinal component of the field is observed. The dependence of the field renormalization on the UV cut-off and on the bare coupling is also investigated.
description: 20 pages, 7 figures. To appear in Physical Review D
Capillary refill time during fluid resuscitation in patients with sepsis-related hyperlactatemia at the emergency department is related to mortality
Creators: name: Lara, Barbara
name: Enberg, Luis
name: Ortega, Marcos
name: Leon, Paula
name: Kripper, Cristobal
name: Aguilera, Pablo
name: Kattan, Eduardo
name: Castro, Ricardo
name: Bakker, Jan
name: Hernandez, Glenn
Publisher: name: Columbia University
Year: 2017
Subjects: Septicemia
Resuscitation
Critical care medicine
Emergency medicine

description: Introduction: Acute circulatory dysfunction in patients with sepsis can evolve rapidly into a progressive stage associated with high mortality. Early recognition and adequate resuscitation could improve outcome. However, since the spectrum of clinical presentation is quite variable, signs of hypoperfusion are frequently unrecognized in patients just admitted to the emergency department (ED). Hyperlactatemia is considered a key parameter to disclose tissue hypoxia but it is not universally available and getting timely results can be challenging in low resource settings. In addition, non-hypoxic sources can be involved in hyperlactatemia, and a misinterpretation could lead to over-resuscitation in an unknown number of cases. Capillary refill time (CRT) is a marker of peripheral perfusion that worsens during circulatory failure. An abnormal CRT in septic shock patients after ICU-based resuscitation has been associated with poor outcome. The aim of this study was to determine the prevalence of abnormal CRT in patients with sepsis-related hyperlactatemia in the early phase after ED admission, and its relationship with outcome. Methods: We performed a prospective observational study. Septic patients with hyperlactemia at ED admission subjected to an initial fluid resuscitation (FR) were included. CRT and other parameters were assessed before and after FR. CRT-normal or CRT-abnormal subgroups were defined according to the status of CRT following initial FR, and major outcomes were registered. Results: Ninety-five hyperlactatemic septic patients were included. Thirty-one percent had abnormal CRT at ED arrival. After FR, 87 patients exhibited normal CRT, and 8 an abnormal one. Patients with abnormal CRT had an increased risk of adverse outcomes (88% vs. 20% p<0.001; RR 4.4 [2.7–7.4]), and hospital mortality (63% vs. 9% p<0.001; RR 6.7 [2.9–16]) as compared to those with normal CRT after FR. Specifically, CRT-normal patients required less frequently mechanical ventilation, renal replacement therapy, and ICU admission, and exhibited a lower hospital mortality. Conclusions: Hyperlactatemic sepsis patients with abnormal CRT after initial fluid resuscitation exhibit higher mortality and worse clinical outcomes than patients with normal CRT.
Brazilian sugarcane ethanol production : integration of economic, ecological, and social aspects, and the future of the market
Creators: name: Barton, Jason Joseph
Publisher: name: University of British Columbia
Year: 2012

description: Should the U.S. and others open their economies to importation of Brazilian ethanol? How would this impact the Brazilian economy, ecosystems, and people? Policy makers in the U.S., Europe, and other places have considered reducing barriers to trade as they are working to reduce their dependence on fossil fuels. Brazilian sugarcane ethanol is more efficient in terms of energy, land use, and production costs than other renewable fuels, making it a logical choice for these countries. This dissertation addresses these questions with three studies. The first (Chapter 2) is a cost-benefit analysis of the Brazilian Forest Code, legislation that has been largely unenforced, mandating that agricultural producers set aside 25-30% of their land as forests and fallow areas to protect ecological health. The second (Chapter 3) asks stakeholders their priorities in the impending increases in sugarcane and ethanol production drawing on interviews and surveys in São Paulo, the state accounting for 60% of Brazil’s sugarcane and ethanol production, with special attention paid to land use and protection of natural resources, and the impacts of increased production on labor markets. The third study (Chapter 4) examines possible future scenarios for the market, which will depend mainly on petroleum prices, the technology for renewable biomass to replace products currently coming from petroleum refineries and the ability of firms to adopt and adapt to these changes, and whether or not other countries will open their economies to importation of ethanol and any future products the Brazilian cane-energy sector may produce. The findings are that this increased production could be extremely positive for Brazilian development if private industry, government, and citizens can remain diligent in enforcing existing legislation for environmental protection and food security, and education can improve, from primary school through professional and technical training, to provide healthy and lucrative jobs as well as the workers who can drive Brazil’s innovation to become one of the most advanced economies in the world.
Dissipative force on an external quark in heavy quark cloud
Creators: name: Chakrabortty, Shankhadeep
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the finite temperature N = 4 strongly coupled super Yang- Mills, we compute the dissipative force on an external quark in the presence of evenly distributed heavy quark cloud. This is computed holographically by constructing the corresponding gravity dual. We study the behaviour of this force as a function of the cloud density. Along the way we also analyze the stability of the gravity dual for vector and tensor perturbations.
description: 14 pages, 2 figures, significant improvements, to be appeared in Physics Letters B
Speocera dongjing Li & Li 2019, sp. nov.
Creators: name: Tong, Yanfeng
name: Li, Fengyuan
name: Song, Yang
name: Chen, Haifeng
name: Li, Shuqiang
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Ochyroceratidae
Speocera
Speocera dongjing

description: Speocera dongjing Li & Li sp. nov. (Figs 21, 58E) Material examined. Holotype ♀ (IZCAS), China, Guangxi Zhuang Autonomous Region, Baise City, Tianyang County, Dongjing Town, behind the small gas station, Liangdong Yan (23º40.125′N, 106º33.957′E), elev. 464 m, 4.III.2016, leg. X. Zhang & Z. Chen. Etymology. The specific name is derived from the type locality; noun. Diagnosis. The new species is similar to S. cuyapo Li & Li sp. nov. but can be distinguished by the very short copulatory duct that connects the spermathecae to the afferent spermathecae and the size of the spermathecae (Fig. 21A). S. cuyapo Li & Li sp. nov. has a long, curved copulatory duct and small spermathecae (Fig. 20A). Description. Female. Total length 1.08; carapace length 0.50; carapace width 0.41; abdomen length 0.53; abdomen width 0.42. Prosoma: carapace pyriform, narrowing gradually anteriorly; light yellow, slightly suffused with purplish pattern (Fig. 21C); pars cephalica flat; fovea not visible. Sternum light yellow, suffused with purplish color, as long as wide (Fig. 21D). Endites light yellow with serrula; labium light yellow. Clypeus nearly vertical; short. Chelicerae light yellow; promargin with a series of six teeth reaching the lamina; retromargin with two very small denticles (Fig. 58E). Eyes: six contiguous eyes, nearly equal sized, surrounded by black pigmentation (Fig. 21C). Opisthosoma oval; purplish (Fig. 21D). Legs light yellow; leg formula 4123; leg lengths I 1.72 (0.49, 0.15, 0.50, 0.31, 0.27); II 1.57 (0.45, 0.15, 0.43, 0.29, 0.25); III 1.34 (0.38, 0.13, 0.33, 0.28, 0.23); IV 1.82 (0.50, 0.16, 0.51, 0.38, 0.28). Genitalia. Internal genitalia with afferent spermathecae short, straight, tip slightly curved posteriorly, not extending past the sides of the abdomen (Fig. 21B); spermathecae large, spherical (Fig. 21A). Male. Unknown. Distribution. Known only from the type locality.
description: Published as part of Tong, Yanfeng, Li, Fengyuan, Song, Yang, Chen, Haifeng & Li, Shuqiang, 2019, Thirty-two new species of the genus Speocera Berland, 1914 (Araneae: Ochyroceratidae) from China, Madagascar and Southeast Asia, pp. 1-75 in Zoological Systematics 44 (1) on pages 26-27, DOI: 10.11865/zs.201901, http://zenodo.org/record/5366923