cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Delivering Inequality: U.S. Maternal Health Disparities and Responses through Advocacy and Policy in the 20th Century
Creators: name: Taylor, Grace
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2023
Subjects: Women's History
U.S. History

description: While maternal mortality is one of the biggest health crises facing the United States today, it is not a new problem. This thesis traces the history of maternal health care in the U.S. since the 1930s, and I argue that race, class, and geographic location were significant factors in shaping a woman’s access to maternity services. The experiences of women outside the white, wealthy, urban elite during this period have rarely been told, and this thesis attempts to understand how they experienced pregnancy and childbirth compared to their privileged peers. I also sought to understand the grassroots advocacy and policy responses to maternal health disparities during the 1960s through the 1990s. A variety of primary and secondary sources such as reports, pamphlets, and newspaper articles were used to explore the successes and shortcomings of both organizations and policies. I argue that community health programming was a successful method to increase access to maternal health services and resources for marginalized women, but these organizations often faced challenges in funding or longevity. Policy responses by the federal government attempted to deal with barriers to care such as cost, location, or discrimination but often fell short of completely reducing disparities in maternal health. Additionally, varying political agendas made funding and government support of the social and health programs unpredictable. In order to address the current maternal health crisis, it is important to examine the successes and shortcomings of 20th century interventions for the same problem.
title: Wear control in sheet metal forming – detection and life span estimation
Creators: name: Wu, Yutian
Publisher: name: UNSPECIFIED
Year: 2023

description: In sheet metal forming, tool wear is more and more affecting production efficiency due to the increased usage of high strength sheet materials and tighter product tolerances. For this reason, it is necessary to develop a reliable wear control method for forming tools. The development of wear detection and prediction methods as well as a better understanding of the influencing factors of wear are key elements for an effective wear control. The first part of the dissertation focuses on a novel method for inline wear detection of the forming tool through thermoelectric current. This sensorless measuring method is able to detect severe wear of coated and uncoated tools effectively. It has also the potential for application in actual sheet metal forming processes such as deep drawing and ironing. The reliability, influencing factors, sensitivity and reproducibility of the measurement method were discussed. In addition to wear detection, a method of tool life estimation for forming tools is the second key factor for optimizing the production efficiency. The wear resistance analysis using the load-dependent wear resistance diagram (WRD), which originates from the "S-N curve", enables the life estimation of a tribological system with limited data of the tool life. In the second part of the thesis, other influencing factors such as tool hardness, tool surfaces and pre-straining of the sheet metal on tool life are discussed. The WRDs for these influencing factors are derived accordingly. However, the derived WRD is only composed of points, which make it difficult to quantitatively estimate tool life and its uncertainties at all load levels. For a broader application of the wear resistance analysis, wear resistance curves (VRC) are needed. In the third part of the thesis the derivation of WRC for coated and uncoated tools is presented. The whole analysis procedure of tool life estimation is illustrated by two application cases of actual forming processes.
Glycine reduces platelet aggregation
Creators: name: Thurman, Ronald G.
name: Boyer, José
name: Forman, Dow
name: Bradford, Blair U.
name: Schemmer, Peter
name: Zhong, Zhi
name: Conzelmann, Lars O.
name: Wheeler, Michael D.
name: Xiangli, Li
name: Galli, Uwe
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: It has been demonstrated that a wide variety of white blood cells and macrophages (i.e. Kupffer cells, alveolar and peritoneal macrophages and neutrophils) contain glycine-gated chloride channels. Binding of glycine on the receptor stimulates Cl− influx causing membrane hyperpolarization that prevents agonist-induced influx of calcium. Since platelet-aggregation is calcium-dependent, this study was designed to test the hypothesis that glycine would inhibit platelet aggregation. Rats were fed diets rich of glycine for 5 days, while controls received isonitrogenous valine. The bleeding time and ADP- and collagen-induced platelet aggregation were measured. Dietary glycine significantly increased bleeding time about two fold compared to valine-treated controls. Furthermore, the amplitude of platelet aggregation stimulated with ADP or collagen was significantly decreased in whole blood drawn from rats fed 2.5 or 5 % dietary glycine by over 50 %. Addition of glycine in vitro (1–10 mM) also blunted rat platelet aggregation in a dose-dependent manner. Strychnine, a glycine receptor antagonist, abrogated the inhibitory effect of glycine on platelet-aggregation in vitro suggesting the glycine works via a glycine receptor. Glycine also blunted aggregation of human platelets. Further, the glycine receptor was detected in both rat and human platelets by western blotting. Based on these data, it is concluded that glycine prevents aggregation of platelets in a dose-dependent manner via mechanisms involving a glycine receptor.
Quantum-enhanced mean value estimation via adaptive measurement
Creators: name: Wada, Kaito
name: Fukuchi, Kazuma
name: Yamamoto, Naoki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum-enhanced (i.e., higher performance by quantum effects than any classical methods) mean value estimation of observables is a fundamental task in various quantum technologies; in particular, it is an essential subroutine in quantum computing algorithms. Notably, the quantum estimation theory identifies the ultimate precision of such an estimator, which is referred to as the quantum Cramér-Rao (QCR) lower bound or equivalently the inverse of the quantum Fisher information. Because the estimation precision directly determines the performance of those quantum technological systems, it is highly demanded to develop a generic and practically implementable estimation method that achieves the QCR bound. Under imperfect conditions, however, such an ultimate and implementable estimator for quantum mean values has not been developed. In this paper, we propose a quantum-enhanced mean value estimation method in a depolarizing noisy environment that asymptotically achieves the QCR bound in the limit of a large number of qubits. To approach the QCR bound in a practical setting, the method adaptively optimizes the amplitude amplification and a specific measurement that can be implemented without any knowledge of state preparation. We provide a rigorous analysis for the statistical properties of the proposed adaptive estimator such as consistency and asymptotic normality. Furthermore, several numerical simulations are provided to demonstrate the effectiveness of the method, particularly showing that the estimator needs only a modest number of measurements to almost saturate the QCR bound.
description: 35 pages, 9 figures. Final version
Advances in liquid electrodes for spent fuel reprocessing in the nuclear industry
Creators: name: Relf, Andrew
Publisher: name: The University of Edinburgh
Year: 2016
Subjects: electrochemistry
molten salts
liquid cathode
nuclear fuel
reprocessing
contact angle
dendrite

description: For several decades, nuclear power has been of interest as an energy source. Advantages include reliability and zero carbon emissions, however there are disadvantages in waste management and the risk of proliferation. Current research aims to address these by developing proliferation resistant methods to reprocesses the spent fuel and close the fuel cycle. Whilst aqueous liquid-extraction reprocessing techniques are in use, these are confined to specific fuel types and produce significant additional low-level radioactive waste. Separation of spent fuel in molten salts has been proposed as an alternative to such aqueous methods. These systems include using liquid metals as electrodes at which selective metal deposition takes place. There are several technical and materials hurdles to overcome, these include: characterisation and optimisation of the processes taking place at the liquid electrode/ molten salt interface; and the development of the necessary on-line analysis techniques for process monitoring. This thesis takes a step-by-step approach to: characterise the behaviour of liquid metal electrodes; explore how molten salts interact with materials to inform the development of microelectrodes for on-line monitoring, and; develop methods to prepare molten salts for rigorous study. First the fundamental response of liquid cathodes is demonstrated through comparative studies in aqueous systems. By comparing electrochemical studies of mercury cathodes at ambient temperatures and liquid cathodes in molten salts, characteristic responses for deposition, alloying and dendritic growth are observed. In ambient conditions, the bounded Cottrell equation is applied to a liquid cathode for, what is believed to be, the first time to explain alloy formation in the upper layers of a liquid cathode. The contact angles of lithium chloride - potassium chloride eutectic (LKE) on materials used in microelectrode fabrication have been measured. These wettability measurements confirm silicon nitride and tungsten as suitable materials in design and fabrication of microelectrodes for online process monitoring. Ensuring the correct speciation is studied in the molten salt is of significant importance in developing a pyroprocessing system. Characterisation must be performed in a high purity, rigorously dry molten salt, and a new method for removing water from lithium chloride-potassium chloride eutectic melt (LKE) has been developed.
Polaronic atom-trimer continuity in three-component Fermi gases
Creators: name: Nishida, Yusuke
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Recently it has been proposed that three-component Fermi gases may exhibit a new type of crossover physics in which an unpaired Fermi sea of atoms smoothly evolves into that of trimers in addition to the ordinary BCS-BEC crossover of condensed pairs. Here we study its corresponding polaron problem in which a single impurity atom of one component interacts with condensed pairs of the other two components with equal populations. By developing a variational approach in the vicinity of a narrow Feshbach resonance, we show that the impurity atom smoothly changes its character from atom to trimer with increasing the attraction and eventually there is a sharp transition to dimer. The emergent polaronic atom-trimer continuity can be probed in ultracold atoms experiments by measuring the impurity spectral function. Our novel crossover wave function properly incorporating the polaronic atom-trimer continuity will provide a useful basis to further investigate the phase diagram of three-component Fermi gases in more general situations.
description: 7 pages; published version
Aspectos relevantes sobre los Planes de Acción Nacional (PAN)
Creators: name: Perdomo Vela, Liliana
Publisher: name: Universidad del Rosario
Year: 2022

description: Recurso perteneciente al mooc Derechos humanos y empresas en el cual se describen los aspectos más relevantes sobre los Planes de Acción Nacional sobre Empresas y Derechos Humanos (PAN).
Anmerkungen zu Problemen und Fragen der Befreiungstheologie
Creators: name: Santoro, Filippo
Publisher: name: Internationale katholische Zeitschrift Communio
Year: 2022

description: Internationale katholische Zeitschrift Communio, Bd. 15 Nr. 5 (1986): Internationale katholische Zeitschrift Communio, Band 15, Heft 5
Diversity in data: Lessons from interdisciplinary practices
Creators: name: Kouper, Inna
name: Petters, Jonathan
name: Lindquist, Thea
Publisher: name: Zenodo
Year: 2023
Subjects: Data management and archiving
Data management
Data curation
Interdisciplinary

description: Interdisciplinary research has seen a substantial growth in the past several decades, and data management plays a crucial role in this trend. New tools and sources of data drive interdisciplinarity and collaborations, and, in turn, interdisciplinary research produces complex, heterogeneous datasets that require different forms of data management and curation. How do interdisciplinary project members negotiate their work around diverse datasets? What role do ethics play in their data practices? How do interdisciplinary teams approach privacy and confidentiality as they collect, store, and organize their heterogeneous datasets? Previous research on interdisciplinary research practices often addresses issues of team dynamics rather than data management and curation. In this presentation we will share results from our study examining several interdisciplinary projects and their complex data practices. Through interviews, observations, and document analysis we have gathered a rich dataset about interdisciplinary data management and curation, and the role of universities in supporting such projects. We will illustrate how interdisciplinary projects, primarily in the social sciences and humanities, collaborate internally and externally and use tools and resources to share, organize, and curate their data. In particular, we will present a use case exhibiting the challenges and nuances of working with vulnerable or historically underrepresented populations. Our findings show that individual disciplinary backgrounds, particularly of the project leaders, affect how projects approach their data and its sensitivity and how they decide to grapple (or not) with issues of representation or privacy. To engage the audience in the further discussion, we will conclude our presentation with insights on data documentation, software interoperability, and collaborative dynamics in interdisciplinary projects.
Qualitative Analysis of Olympic and Paralympic Retirement with a Focus on Resources Allocated to Athletes
Creators: name: Schieck, Emma
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2023

description: Veteran athletes are vital to success in sport at the elite level. Veteran athletes bring experience, leadership, and readiness to learn to their sport. Like most sports organizations, the U.S. Olympic and Paralympic Committee and U.S. National Governing Bodies aim for the highest level of success in their sport, and therefore should desire to retain capable athletes. This study aimed to discover what sport organizations like the USOPC and NGBs could do to prolong the career of Olympic and Paralympic athletes. Nine Olympic and Paralympic athletes who competed in the Tokyo 2020/Beijing 2022 Games completed surveys and were interviewed about their reasons for retirement and overall experience. It was found that athletic retirement is multi-dimensional and there is a heavy intersection between reasons for retirement. The most common reasons for retirement were financial or work/study related. Other cited factors were career satisfaction, age, and injury. In conclusion, if U.S. Olympic and Paralympic teams want to retain veteran athletes and increase competitiveness, then resources pertaining to financial resources and exploring ways to aid athletes in their pursuit of education or work while training should be a primary focus.
A Novel Solution to the Klein-Gordon Equation in the Presence of a Strong Rotating Electric Field
Creators: name: Raicher, Erez
name: Eliezer, Shalom
name: Zigler, Arie
Publisher: name: arXiv
Year: 2015
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The Klein-Gordon equation in the presence of a strong electric field, taking the form of the Mathieu equation, is studied. A novel analytical solution is derived for particles whose asymptotic energy is much lower or much higher than the electromagnetic field amplitude. The condition for which the new solution recovers the familiar Volkov wavefunction naturally follows. When not satisfied, significant deviation from the Volkov wavefunction is demonstrated. The new condition is shown to differ by orders of magnitudes from the commonly used one. As this equation describes (neglecting spin effects) the emission processes and the particle motion in Quantum Electrodynamics (QED) cascades, our results suggest that the standard theoretical approach towards this phenomenon should be revised.
Assessing the Effects of Racial Microaggression and Structural Inequality on Overall Well-Being and Psychopathology among BIPOC Adolescents
Creators: name: Brown, Kayla
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2023

description: Racism impacts the lives of Black, Indigenous, and Persons of Color (BIPOC) youth. The present study seeks to address gaps within the literature about the detrimental effects that two forms of racial injustice can have on overall well-being and psychopathology in BIPOC adolescents: microaggressions and structural inequality. While assessing the effects of racial microaggressions and structural inequality, we used peer experiences as a moderator to test whether peer relations served as a protective factor against poor outcomes. BIPOC participants (N = 96) with the majority identifying as black (62.5 %) and female (53%) were given the measures to assess for overall well-being, racial microaggression, peer experiences and psychopathology. Further, we used the Child Opportunity Index to obtain measures of participant’s experienced structural inequality. Consistent with other studies, racial microaggressions predicted psychopathology and overall well-being. Structural inequality, contrastingly, did not predict psychopathology and well being. The interaction between racial microaggression and receiving prosocial behaviors was significant, b = -.057 p = .05, t(94) = 1.99 in predicting psychopathology. Similarly, in follow up analyses, the interaction between structural inequality and receiving prosocial behavior in predicting psychopathology was also significant, b =- 0.21, t(94) = 2.18, p = .03. Results suggest that receiving prosocial behavior may protect BIPOC youth from the detrimental effects of microaggressions and inequality.

Keywords: Black, Indigenous and People of Color (BIPOC), Peer Experiences, Racial
Microaggression, Structural Inequality, Well-Being
Enfoque diferencial para personas con discapacidad y personas mayores
Creators: name: Palacios Sanabria, María Teresa
Publisher: name: Universidad del Rosario
Year: 2022

description: Recurso audiovisual perteneciente al mooc Enfoque diferencial para el logro de la igualdad mediante el cual la experta Andrea Carolina Padilla Muñoz - Abogada y profesora, da respuesta a la pregunta ¿Cuál es la importancia que resalta del enfoque diferencial en los grupos poblacionales con los que tiene relación? desde la perspectiva de la atención para las personas con discapacidad y personas mayores.
Genome Detective Platform adaptations for plant viruses
Creators: name: Cleemput, S.
name: Dierickx, S.
Publisher: name: Zenodo
Year: 2024

description: Deliverable 2.4 outlines the changes made to the Genome Detective Platform to accommodate the collection and analysis of plant virus samples, including metagenomic viral sequences and epidemiological metadata annotations, for the analysis of plant virus outbreaks.The H2020 project VIRTIGATION - Emerging viral diseases in tomatoes and cucurbits: Implementation of mitigation strategies for durable disease management - has received funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement No. 101000570.
Analysis of Late--time Light Curves of Type IIb, Ib and Ic Supernovae
Creators: name: Wheeler, J. Craig
name: Johnson, V.
name: Clocchiatti, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The shape of the light curve peak of radioactive--powered core--collapse "stripped--envelope" supernovae constrains the ejecta mass, nickel mass, and kinetic energy by the brightness and diffusion time for a given opacity and observed expansion velocity. Late--time light curves give constraints on the ejecta mass and energy, given the gamma--ray opacity. Previous work has shown that the principal light curve peaks for SN~IIb with small amounts of hydrogen and for hydrogen/helium--deficient SN~Ib/c are often rather similar near maximum light, suggesting similar ejecta masses and kinetic energies, but that late--time light curves show a wide dispersion, suggesting a dispersion in ejecta masses and kinetic energies. It was also shown that SN~IIb and SN~Ib/c can have very similar late--time light curves, but different ejecta velocities demanding significantly different ejecta masses and kinetic energies. We revisit these topics by collecting and analyzing well--sampled single--band and quasi--bolometric light curves from the literature. We find that the late--time light curves of stripped--envelope core--collapse supernovae are heterogeneous. We also show that the observed properties, the photospheric velocity at peak, the rise time, and the late decay time, can be used to determine the mean opacity appropriate to the peak. The opacity determined in this way is considerably smaller than common estimates. We discuss how the small effective opacity may result from recombination and asymmetries in the ejecta.
description: Substantially changed from previously-posted version, 29 pages, 8 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society
Ultrafast Hybrid Fermion-to-Qubit mapping
Creators: name: O'Brien, Oliver
name: Strelchuk, Sergii
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Fermion-to-qubit mappings play a crucial role in representing fermionic interactions on a quantum computer. Efficient mappings translate fermionic modes of a system to qubit interactions with a high degree of locality while using few auxiliary resources. We present a family of locality-preserving fermion-to-qubit mappings that require fewer auxiliary qubits than all existing schemes known to date. One instance requires only 1.016 qubits-per-fermion compared to 1.25 for the best-known locality-preserving mapping by Y.-A. Chen and Y. Xu [PRX Quantum 4, 010326 (2023)]. Our family of mappings (parameterised by integer $n$) establishes a direct trade-off between the number of auxiliary qubits ($\frac{1}{n^2}$) and the circuit length ($O(\log n)$). Furthermore, we present a non-local variant that combines the strengths of the Jordan-Wigner and Bravyi-Kitaev mappings to give 98\% shorter circuits than the Jordan-Wigner mapping. This is achieved by applying seemly incompatible mappings at different scales, making it possible for their respective strengths to complement each other.
Die Weltwirtschaft im Licht der Katholischen Soziallehre
Creators: name: Höffner, Joseph
Publisher: name: Internationale katholische Zeitschrift Communio
Year: 2022

description: Internationale katholische Zeitschrift Communio, Bd. 15 Nr. 5 (1986): Internationale katholische Zeitschrift Communio, Band 15, Heft 5
An immunoaffinity tandem mass spectrometry (iMALDI) assay for detection of Francisella tularensis
Creators: name: Parker, Carol E.
name: Kawula, Thomas H.
name: Borchers, Christoph H.
name: Fuller, James R.
name: Jiang, Jian
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Francisella tularensis (F. tularensis) has been designated by the CDC as one of the ten organisms most likely to be engineered for bioterrorism. Symptoms of tularemia in humans are non-specific, thus making the disease difficult to diagnose. If not quickly diagnosed and treated, the disease has a high mortality rate - thus methods for early and specific diagnosis are of critical importance.
Kirche und Wirtschaft in gemeinsamer Verantwortung für die Entwicklung der Weltwirtschaft
Creators: name: Casaroli, Agostino
Publisher: name: Internationale katholische Zeitschrift Communio
Year: 2022

description: Internationale katholische Zeitschrift Communio, Bd. 15 Nr. 5 (1986): Internationale katholische Zeitschrift Communio, Band 15, Heft 5
An accurate and precise high-performance liquid chromatography method for the rapid quantification of the novel HIV integrase inhibitor raltegravir in human blood plasma after solid phase extraction
Creators: name: White, Nicole
name: Kashuba, Angela D.M.
name: Rezk, Naser L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: The quantification of the HIV integrase inhibitor raltegravir in blood plasma is described using solid phase extraction (SPE) coupled with an accurate high-performance liquid chromatography assay with ultraviolet (UV) detection. The method was validated over the range of 20–10,000ng/mL using simple sample preparation and chromatography. The SPE method was optimized to be selective and highly efficient. The buffer’s ionic strength and pH were optimized for retaining RAL and the internal standard on the column, the percentage of methanol was optimized in the cleaning step to remove unwanted plasma contaminants, and the type and amount of acid was optimized for complete elution of the compounds. This method has no interference with other potentially co-administered antiretrovirals or common drugs. Average recoveries for the extraction method were consistently high: 90% for raltegravir and 90% for the internal standard diazepam. This method was found to be accurate and precise. Within day (n=6) and between day (n=18) accuracies ranged from 97.5% to 104.4%. Within-day (n=6) and between-day (n=18) precision ranged from 1.4% to 3.8%, and from 2.4% to 7.9%, respectively. This is the first published method to use simple UV technology and reliable SPE extraction methodology for the quantification of raltegravir in human plasma. This method can be easily implemented in most bioanalytical laboratories.
Los ODS y el papel de las empresas en el cumplimiento de los ODS y su relación con los DDHH
Creators: name: Perdomo Vela, Liliana
Publisher: name: Universidad del Rosario
Year: 2022

description: Recurso perteneciente al mooc Derechos humanos y empresas en el cual se presentan algunas inciativas destacadas en el campo de estudio de los ODS y su relación con los Derechos Humanos.
Gender disparities impacting the diagnosis of autism in women and girls; Unique characteristics to consider
Creators: name: Liles, Kimberly
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2023

description: Autism research has consistently focused on a narrow demographic, including primarily non-Hispanic white male participants, while excluding other marginalized groups. As a result, autism has historically been viewed as a male-specific disorder. However, recent research has begun to identify ways that autism presents differently for women and girls. This systematic literature review compiled research examining sex or gender differences related to autism spectrum disorder (ASD), to establish what unique characteristics may exist among women and girls on the spectrum, and how these may contribute to their under-diagnosis or late-diagnosis. Differences across social communication and interaction, and repetitive behaviors and interests were found. Characteristics of women and girls were often more obscure, and biases contributed to the ways behaviors were perceived by parents, teachers, and clinicians. Women and girls appear to model the diagnostic criteria uniquely; implications exist for educating individuals associated with the referral or assessment of ASD.
Magic angle in thermal conductivity of twisted bilayer graphene
Creators: name: Cheng, Yajuan
name: Fan, Zheyong
name: Zhang, Tao
name: Nomura, Masahiro
name: Volz, Sebastian
name: Zhu, Guimei
name: Li, Baowen
name: Xiong, Shiyun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report a local minimum in thermal conductivity in twisted bilayer graphene (TBG) at the angle of 1.08$^\circ$, which corresponds to the 'magic angle' in the transition of several other reported properties. Within the supercell of a moiré lattice, different stacking modes generate phonon scattering sites which reduce the thermal conductivity of TBG. The thermal magic angle arises from the competition between the delocalization of atomic vibrational amplitudes and stresses on one hand, and the increased AA stacking density on the other hand. The former effect weakens the scattering strength of a single scatterer while the latter one increases the density of scatterers. The combination of these two effects eventually leads to the apparition of the highlighted irregularity in heat conduction. The manifestation of a magic angle, disclosing new thermal mechanisms at nanoscale, further uncovers the unique physics of two-dimensional materials.
description: 15 pages, 5 figures
Patterning pallet arrays for cell selection based on high-resolution measurements of fluorescent biosensors
Creators: name: Hahn, Klaus
name: Shadpour, Hamed
name: Allbritton, Nancy L.
name: Herman, Annadele
name: Zawistowski, Jon S.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Pallet arrays enable cells to be separated while they remain adherent to a surface and provide a much greater range of cell selection criteria relative to that of current technologies. However there remains a need to further broaden cell selection criteria to include dynamic intracellular signaling events. To demonstrate the feasibility of measuring cellular protein behavior on the arrays using high resolution microscopy, the surfaces of individual pallets were modified to minimize the impact of scattered light at the pallet edges. The surfaces of the three-dimensional pallets on an array were patterned with a coating such as fibronectin using a customized stamping tool. Micropatterns of varying shape and size were printed in designated regions on the pallets in single or multiple steps to demonstrate the reliability and precision of patterning molecules on the pallet surface. Use of a fibronectin matrix stamped at the center of each pallet permitted the localization of H1299 and mouse embryonic fibroblast (MEF) cells to the pallet centers and away from the edges. Compared to pallet arrays with fibronection coating the entire top surface, arrays with a central fibronectin pattern increased the percentage of cells localized to the pallet center by 3-4 fold. Localization of cells to the pallet center also enabled the physical separation of cells from optical artifacts created by the rough pallet side walls. To demonstrate the measurement of dynamic intracellular signaling on the arrays, fluorescence measurements of high spatial resolution were performed using a RhoA GTPase biosensor. This biosensor utilized fluorescence resonance energy transfer (FRET) between cyan fluorescent protein (CFP) and yellow fluorescent protein (YFP) to measure localized RhoA activity in cellular ruffles at the cell periphery. These results demonstrated the ability to perform spatially resolved measurements of fluorescence-based sensors on the pallet arrays. Thus, the patterned pallet arrays should enable novel cell separations in which cell selection is based on complex cellular signaling properties.
The Role of Nectin Receptors in Periderm Development
Creators: name: Jena, Akankshya
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2023

description: During embryonic development, the epidermis is transiently covered by a layer known as the periderm. Mutations resulting in defective periderm development drive diseases with symptoms of unwanted epithelial fusions, such as syndactyly and cleft palate. NECTIN1 and NECTIN4 are adhesion receptors of the adherens junction known to localize at the periderm-basal cell interface. While we know nectins are expressed at this interface during epidermal development, we still do not know the function of NECTIN1/4 interactions on periderm morphogenesis. Based on the preferential heterotypic nectin binding activity, we suspect that these receptors interact with one another at this interface to signal downstream cytoskeletal changes in the periderm. Double knockdown constructs of Nectin1 and Nectin4 were transduced into embryonic mouse epithelia, and subsequently imaged by immunofluorescence microscopy. Previous work from our lab showed that dual knockdown of Nectin1 and Nectin4 results in cleft palate, likely due to periderm loss (Lough 2020). Here, I show that loss of both epidermal nectins results in severe loss of periderm in embryonic backskin epidermis, indicating a role of nectins in periderm development. Furthermore, I am investigating how overexpression of Nectin1 and Nectin4 impact periderm development. Discerning the role of nectins in the periderm is important in elucidating the molecular mechanisms driving periderm development, which are less understood, and may have broader implications for other “peridermopathies.”
Brown trout (Salmo trutta) RAD data set of 12204 sequences each containing one or two SNPs, and subset of 245 clean RADS for KASPAR genotyping
Creators: name: Keoni Saint-Pé
name: Leitwein, Maeva
name: Tissot, Laurence
name: Poulet, Nicolas
name: Guinand, Bruno
name: Berrebi, Patrick
name: Marselli, Geoffrey
name: Jean-Marc Lascaux
name: Pierre-Alexandre Gagnaire
name: Blanchet Simon
Publisher: name: Figshare
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60204 Freshwater Ecology
subject: Genetics
subject: 60408 Genomics

description:
FIle "12204RADsFinal" : Brown trout (Salmo trutta) RAD data set of 12204 sequences each containing one or two SNPs with minimum allele frequency of 5% or higher, no SNPs in the first or
last 30 bp of the RAD, no unsequenced nucleotides, and which can be
positioned on the S. trutta linkage map. This file
contains for each RAD, identification (Locus_ID ),
chromosome on Atlantic Salmon CHROMsalar), linkage group on the Brown trout
linkage map (LG_Trutta),Position on the brown trout linkage group (Pos_cM_Trutta),
positions on the Atlantic salmon chromosome (POSsalar_snp1, POSsalar_snp2),
position of the SNP on the Rad tag (POStag_snp1, POStag_snp2), recombination
rate (  recombination_rate_cM.Mb),
sequence of the tag (TAG), sequencing direction (Orientation), and position of
the rad (POS_RAD).
File "SNPsLowDensityFinal245": Subset of 245 clean RADS for KASPAR genotyping.
This file
contains for each SNP, identification (SNP_ID), linkage group on the Brown
trout linkage map (LG_Trutta), position of the SNP on the Rad tag (POStag_snp),
 recombination rate (recombination_rate_cM.Mb),  sequence of the tag (TAG_sequence).

It also
gives success at genotyping information:

-
listSuccessTests162    : SNPs which have been genotyped (when TRUE)
in the five river basins tested for genotyping success.

-
listTaurion182:
SNPs which have been genotyped (when TRUE) in the five river basins tested for
genotyping success, and added SNPs which have been genotyped in the Taurion
basin (after removing the 30 which did not work in the five basins, then the 10
which did not work in the Taurion).
Line game-perfect graphs
Creators: name: Andres, Stephan Dominique
name: Fong, Wai Lam
Publisher: name: arXiv
Year: 2023
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15, 05C17, 05C57, 05C76, 91A43

description: The $[X,Y]$-edge colouring game is played with a set of $k$ colours on a graph $G$ with initially uncoloured edges by two players, Alice (A) and Bob (B). The players move alternately. Player $X\in\{A,B\}$ has the first move. $Y\in\{A,B,-\}$. If $Y\in\{A,B\}$, then only player $Y$ may skip any move, otherwise skipping is not allowed for any player. A move consists of colouring an uncoloured edge with one of the $k$ colours such that adjacent edges have distinct colours. When no more moves are possible, the game ends. If every edge is coloured in the end, Alice wins; otherwise, Bob wins.
 The $[X,Y]$-game chromatic index $χ_{[X,Y]}'(G)$ is the smallest nonnegative integer $k$ such that Alice has a winning strategy for the $[X,Y]$-edge colouring game played on $G$ with $k$ colours. The graph $G$ is called line $[X,Y]$-perfect if, for any edge-induced subgraph $H$ of $G$, \[χ_{[X,Y]}'(H)=ω(L(H)),\] where $ω(L(H))$ denotes the clique number of the line graph of $H$.
 For each of the six possibilities $(X,Y)\in\{A,B\}\times\{A,B,-\}$, we characterise line $[X,Y]$-perfect graphs by forbidden (edge-induced) subgraphs and by explicit structural descriptions, respectively.
Es gibt "Zufälle", die keine Zufälle sind
Creators: name: Simmel, Oskar
Publisher: name: Internationale katholische Zeitschrift Communio
Year: 2022

description: Internationale katholische Zeitschrift Communio, Bd. 15 Nr. 4 (1986): Internationale katholische Zeitschrift Communio, Band 15, Heft 4
Vergangenheitsbewältigung und Geschichstsschreibung
Creators: name: Lechner, Kilian
Publisher: name: Internationale katholische Zeitschrift Communio
Year: 2022

description: Internationale katholische Zeitschrift Communio, Bd. 15 Nr. 4 (1986): Internationale katholische Zeitschrift Communio, Band 15, Heft 4
Using light scattering to evaluate the separation of polydisperse nanoparticles
Creators: name: Holbrook, R. David
name: Filliben, James J.
name: Weinberg, Howard S.
name: Ripple, Dean C.
name: Galyean, Anne A.
name: Vreeland, Wyatt N.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: Appendix A Supplementary data The following are the supplementary data related to this article: Download Appendix A Supplementary data Supplementary data related to this article can be found at http://dx.doi.org/10.1016/j.aca.2015.06.027. Abstract The analysis of natural and otherwise complex samples is challenging and yields uncertainty about the accuracy and precision of measurements. Here we present a practical tool to assess relative accuracy among separation protocols for techniques using light scattering detection. Due to the highly non-linear relationship between particle size and the intensity of scattered light, a few large particles may obfuscate greater numbers of small particles. Therefore, insufficiently separated mixtures may result in an overestimate of the average measured particle size. Complete separation of complex samples is needed to mitigate this challenge. A separation protocol can be considered improved if the average measured size is smaller than a previous separation protocol. Further, the protocol resulting in the smallest average measured particle size yields the best separation among those explored. If the differential in average measured size between protocols is less than the measurement uncertainty, then the selected protocols are of equivalent precision. As a demonstration, this assessment metric is applied to optimization of cross flow (V x ) protocols in asymmetric flow field flow fractionation (AF4) separation interfaced with online quasi-elastic light scattering (QELS) detection using mixtures of polystyrene beads spanning a large size range. Using this assessment metric, the V x parameter was modulated to improve separation until the average measured size of the mixture was in statistical agreement with the calculated average size of particles in the mixture. While we demonstrate this metric by improving AF4V x protocols, it can be applied to any given separation parameters for separation techniques that employ dynamic light scattering detectors. Graphical abstract Highlights • We present a tool to assess relative accuracy among separation protocols. • This metric can be applied to any techniques using light scattering detection. • An improved separation protocol minimizes the average measured particle size. • A protocol with the smallest average measured particle size is the best separation. • Metric is demonstrated by improving AF4 cross flow protocols for polystyrene beads.
Diagnostics of mixed-state topological order and breakdown of quantum memory
Creators: name: Fan, Ruihua
name: Bao, Yimu
name: Altman, Ehud
name: Vishwanath, Ashvin
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Topological quantum memory can protect information against local errors up to finite error thresholds. Such thresholds are usually determined based on the success of decoding algorithms rather than the intrinsic properties of the mixed states describing corrupted memories. Here we provide an intrinsic characterization of the breakdown of topological quantum memory, which both gives a bound on the performance of decoding algorithms and provides examples of topologically distinct mixed states. We employ three information-theoretical quantities that can be regarded as generalizations of the diagnostics of ground-state topological order, and serve as a definition for topological order in error-corrupted mixed states. We consider the topological contribution to entanglement negativity and two other metrics based on quantum relative entropy and coherent information. In the concrete example of the 2D Toric code with local bit-flip and phase errors, we map three quantities to observables in 2D classical spin models and analytically show they all undergo a transition at the same error threshold. This threshold is an upper bound on that achieved in any decoding algorithm and is indeed saturated by that in the optimal decoding algorithm for the Toric code.
description: 10 pages, 5 figures + 3.5 page appendices (published version)
Lo que debemos saber sobre los mecanismos judiciales
Creators: name: Perdomo Vela, Liliana
Publisher: name: Universidad del Rosario
Year: 2022

description: Recurso perteneciente al mooc Derechos humanos y empresas en el cual se describen las generalidades asociadas a los mecanismos judiciales de reparación en materia de empresas y derechos humanos, junto con los elementos que los componen.
Analytical and numerical Gubser solutions of the second-order hydrodynamics
Creators: name: Pang, Long-Gang
name: Hatta, Yoshitaka
name: Wang, Xin-Nian
name: Xiao, Bo-Wen
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Evolution of quark-gluon plasma (QGP) near equilibrium can be described by the second-order relativistic viscous hydrodynamic equations. Consistent and analytically verifiable numerical solutions are critical for phenomenological studies of the collective behavior of QGP in high-energy heavy-ion collisions. A novel analytical solution based on the conformal Gubser flow which is a boost-invariant solution with transverse fluid velocity is presented. Due to the non-linear nature of the equation, the analytical solution is non-perturbative and exhibits features that are rather distinct from solutions to usual linear hydrodynamic equations. It is used to verify with high precision the numerical solution with a newly developed state-of-the-art $(3+1)$-dimensional second-order viscous hydro code (CLVisc). The perfect agreement between the analytical and numerical solutions demonstrates the reliability of the numerical simulations with the second-order viscous corrections. This lays the foundation for future phenomenological studies that allow one to gain access to the second-order transport coefficients.
description: 6 pages, 5 figures; v3 with more discussion. Published version
Understanding the Impact of COVID-19 Regulations on Children’s Language and Auditory Development
Creators: name: Small, Kalei
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2023

description: With rising COVID-19 infection rates, the U.S. introduced mass masking, social distancing, school closures/remote learning, and closures/interruptions to speech and hearing services to mitigate the spread of the virus. This literature review investigated the impact of COVID-19 regulations on language and auditory development from infancy through adolescence. To address these questions, this study reviewed literature for impacts on speech production, pragmatics, auditory processing, and both language and auditory milestones. Our results indicate a prominent negative impact of COVID-19 regulations on both language and auditory development. Our findings suggest that social distancing negatively impacted language milestone achievement, school closures negatively impacted language and auditory milestone achievement, and service closures negatively impacted auditory milestone achievement. Most notably, our results indicate that masks negatively impact every outcome considered in this study. This literature review emphasizes the importance of such findings in context for infants and children, educators, caregivers, service providers, and policymakers. We urge service providers and educators to engage in interprofessional collaboration alongside caregivers to mitigate the negative impacts of COVID-19 regulations on children. Additionally, we urge policymakers to consider these impacts during decision making regarding pandemic regulations.
Homogeneity and isotropy in the 2MASS Photometric Redshift catalogue
Creators: name: Alonso, David
name: Salvador, Ana Isabel
name: Sánchez, Francisco Javier
name: Bilicki, Maciej
name: García-Bellido, Juan
name: Sánchez, Eusebio
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Using the 2MASS Photometric Redshift catalogue we perform a number of statistical tests aimed at detecting possible departures from statistical homogeneity and isotropy in the large-scale structure of the Universe. Making use of the angular homogeneity index, an observable proposed in a previous publication, as well as studying the scaling of the angular clustering and number counts with magnitude limit, we place constraints on the fractal nature of the galaxy distribution. We find that the statistical properties of our sample are in excellent agreement with the standard cosmological model, and that it reaches the homogeneous regime significantly faster than a class of fractal models with dimensions $D<2.75$. As part of our search for systematic effects, we also study the presence of hemispherical asymmetries in our data, finding no significant deviation beyond those allowed by the concordance model.
description: 18 pages, 13 figures, published in MNRAS