bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bulldozing the dead: Chinese, citizenry, and cemetery in post-colonial South Korea
Authors: Eom Sujin 
Published: May 2022

AbstractThis article looks at lawsuits surrounding two Chinese cemeteries in the mid-twentieth century South Korean cities of Incheon and Seoul as crucial sites to examine the post-colonial legal construction of national citizenry based on property rights. While different legal rationales were employed in each case, the two Chinese cemeteries were relocated to the periphery of each city as a consequence of the litigation. In Incheon, it was argued that the cemetery was owned by Chinese nationals whose land rights were ambiguous and hence open to question, both during the colonial and post-colonial period. On the other hand, in Seoul, rights to the cemetery were at stake due to its association with Japanese nationals, whose holdings were regarded as ‘enemy properties’ in the post-colonial years. Not only were the lawsuits symbolic events that foreshadowed the displacement of Chinese residents from what was considered to be Korea's national land, they also revealed an operative ambiguity in the post-colonial legal system, readily exploited as a tool for discrimination. Drawing upon an analysis of these cases, I argue that the Chinese cemeteries served as a reminder that uncertainty and ambiguity were on tap in the legal workings of post-colonial society, manifested in blunt efforts to define its legitimate members and dictate who is entitled to be buried within a nation's borders.
Investigating the lived experience of LGBT+ people with dementia and their care partners: a scoping review
Authors: Smith Louisa , Chesher Isabelle , Fredriksen-Goldsen Karen , Ward Richard , Phillipson Lyn , Newman Christy E. , Delhomme Felix 
Published: May 2022

AbstractDementia, a global health priority, poses a disproportionately high risk to lesbian, gay, bisexual and trans plus (LGBT+)/gender and sexuality diverse people. Despite this, little research has explored the lived experience of LGBT+ people with dementia or their care partners. This scoping review aims to understand what the literature reveals about their experiences, the ways in which their lives have been investigated, to inform future research, policy and practice. Using an established scoping review methodology, we identified seven papers that reported empirical research on the lived experience of LGBT+ people with dementia and their care partners. Only a single study reported on in two of the papers included people who were trans. This in itself reveals how rarely LGBT+ people are asked to speak about how dementia has shaped their lives in academic research. Our reflexive thematic analysis indicates that LGBT+ people with dementia and their care partners endure overlapping forms of disadvantage. This results in heightened experiences of fear and discrimination, lack of services and compounded social isolation. Importantly, while dementia was embodied as interference and loss by LGBT+ people, it was their gender and sexuality differences that provided solace, even in the face of disadvantage. Importantly, people's relationships with LGBT+ identities were framed as fundamental for safety, resilience and wellbeing, rather than a complicating or confounding factor in living with dementia.
Nest density, egg conspicuity, vegetation structure and seasonality affect artificial nest predation in the Brazilian Cerrado
Authors: de Aguiar Ivan R. , Vianna Vinícius R. , Dias Raphael Igor 
Published: May 2022

AbstractNest predators use visual, acoustic and chemical cues to locate nests. In the Neotropics, predation is high being the main cause of nest failure. Despite that, it is still not completely clear what kind of information predators are using to find nests or whether predators respond differently according to habitat characteristics. Here, we executed an experimental manipulation to investigate how different ecological factors influence nest predation probability. We hypothesised that egg conspicuousness, nest clustering and a more open vegetation structure would increase nest predation probability, and that nest predation would be higher during the breeding season of most avian species in the region. We used artificial nests baited with plasticine and quail eggs (Coturnix coturnix), manipulated egg coloration and nest density. Artificial nests were distributed over forest and savanna-like vegetations. Overall predation rate was 40.9%. We found that nests baited with conspicuous eggs, located in open habitats, at higher densities and during the dry period were more predated. Results suggest that main predators must be visually orientated, and that egg crypsis is an important trait for open-nest species in the area. Moreover, a higher nest density may affect predator behaviour, favouring an increase in nest searching, which may be facilitated in open habitats.
Isolation and characterization of a novel laccase from an Antarctic thermophilic Geobacillus
Authors: Atalah Joaquín , Blamey Jenny M. 
Published: May 2022

AbstractLaccases are enzymes from the multi-copper oxidase family that have gathered a lot of attention due to their wide range of substrates, their interspecies variability and their still elusive mechanism of action. The presence of four copper atoms in their active site makes them an interesting model for the study of the relationship between the structure and function of proteins. It is possible to find them in fungi, plants and prokaryotes. Bacterial laccases display many advantages over fungal laccases in terms of their application. They have, in general, a greater thermal stability and a different pH profile, which contributes to widening their field of possible application. In the present work, a novel laccase from an Antarctic microorganism, Geobacillus sp. ID17, is purified and characterized. This is the first Antarctic bacterial laccase to be functionally described. It was found to be active at neutral pH and to have greater activity at 55°C. Its catalytic constants are in the order of other bacterial laccases. Screening for different potential substrates was also performed, showing that this novel laccase is more selective than commercial laccases. This enzyme could find potential application in the generation of gallic acid polymers or in organic synthesis in contexts where meticulous substrate discrimination is needed.
Understanding posttraumatic stress trajectories in adolescent females: A strength-based machine learning approach examining risk and protective factors including online behaviors
Authors: Haag Ann-Christin , Bonanno George A. , Chen Shuquan , Herd Toria , Strong-Jones Sienna , S. Sunshine , Noll Jennie G. 
Published: May 2022

AbstractHeterogeneity in the course of posttraumatic stress symptoms (PTSS) following a major life trauma such as childhood sexual abuse (CSA) can be attributed to numerous contextual factors, psychosocial risk, and family/peer support. The present study investigates a comprehensive set of baseline psychosocial risk and protective factors including online behaviors predicting empirically derived PTSS trajectories over time. Females aged 12–16 years (N= 440); 156 with substantiated CSA; 284 matched comparisons with various self-reported potentially traumatic events (PTEs) were assessed at baseline and then annually for 2 subsequent years. Latent growth mixture modeling (LGMM) was used to derive PTSS trajectories, and least absolute shrinkage and selection operator (LASSO) logistic regression was used to investigate psychosocial predictors including online behaviors of trajectories. LGMM revealed four PTSS trajectories: resilient (52.1%), emerging (9.3%), recovering (19.3%), and chronic (19.4%). Of the 23 predictors considered, nine were retained in the LASSO model discriminating resilient versus chronic trajectories including the absence of CSA and other PTEs, low incidences of exposure to sexual content online, minority ethnicity status, and the presence of additional psychosocial protective factors. Results provide insights into possible intervention targets to promote resilience in adolescence following PTEs.
Kynurenine pathway and autism spectrum phenotypes: an investigation among adults with autism spectrum disorder and their first-degree relatives
Authors: Carpita Barbara , Nardi Benedetta , Palego Lionella , Cremone Ivan M. , Massimetti Gabriele , Carmassi Claudia , Betti Laura , Giannaccini Gino , Dell’Osso Liliana 
Published: May 2022

AbstractBackgroundIncreasing literature highlighted alterations of tryptophan (TRP) metabolism and kynurenine (KYN) pathway in children with autism spectrum disorder (ASD). However, no study specifically focused on adult samples. Meanwhile, several authors stressed the relevance of investigating neurobiological correlates of adult forms of ASD and of those subthreshold ASD manifestations frequently found in relatives of ASD probands, known as broad autism phenotype (BAP). This work aimed to evaluate circulating levels of TRP and metabolites of KYN pathway in a sample of ASD adults, their first-degree relatives and controls (CTLs), investigating also the correlations between biochemical variables’ levels and ASD symptoms.MethodsA sample of ASD adults, together with a group of first-degree relatives (BAP group) and unrelated CTLs were assessed by means of psychometric scales. Circulating levels of TRP, KYN, quinolinic acid (QA), and kynurenic acid (KYNA) were assessed in all subjects.ResultsASD patients reported significantly higher total scores than the other groups on all psychometric scales. BAP subjects scored significantly higher than CTLs. ASD patients reported significantly lower TRP levels than BAP and CTL groups. Moreover, significantly lower levels of KYNA were reported in both ASD and BAP groups than in CTLs. Specific patterns of associations were found between autism symptoms and biochemical variables.ConclusionsOur findings confirm in adult samples the presence of altered TRP metabolism through KYN pathway. The intermediate alterations reported among relatives of ASD patients further stress the presence of a continuum between subthreshold and full-threshold ASD phenotypes also from a biochemical perspective.
Enabling In Situ Studies of Metal-Organic Chemical Vapor Deposition in a Transmission Electron Microscope
Authors: Tornberg Marcus , Maliakkal Carina B , Jacobsson Daniel , Wallenberg Reine , Dick Kimberly A 
Published: May 2022

Abstract
The world of environmental microscopy provides the possibility to study and analyze transformations and reactions during realistic conditions to understand the processes better. We report on the design and development of a metal-organic chemical vapor deposition (MOCVD) system integrated with an environmental transmission electron microscope intended for real-time investigations of crystal growth. We demonstrate methods for achieving a wide range of precisely controlled concentrations of precursor gas at the sample, as well as for calibrating the sample partial pressure using the pressure measured elsewhere in the microscope column. The influences of elevated temperature and reactive gas within the pole-piece gap are evaluated with respect to imaging and spectroscopy. We show that X-ray energy-dispersive spectroscopy can be strongly affected by temperatures beyond 500C, while the spatial resolution is largely unaffected by heat and microscope pressure for the relevant conditions. Finally, the influence of the electron beam on the investigated processes is discussed. With this work, we aim to provide crucial input in the development of advanced in situ electron microscopy systems for studies of complex reactions in real time under realistic conditions, for instance as used during formation of semiconductor crystals.
Application of Synchrotron Radiation-Based Micro-Analysis on Cadmium Yellows in Pablo Picasso's Femme
Authors: Ghirardello Marta , Gonzalez Victor , Monico Letizia , Nevin Austin , MacLennan Douglas , Patterson Catherine Schmidt , Burghammer Manfred , Réfrégiers Matthieu , Comelli Daniela , Cotte Marine 
Published: May 2022

Abstract
The cultural heritage community is increasingly exploring synchrotron radiation (SR) based techniques for the study of art and archaeological objects. When considering heterogeneous and complex micro-samples, such as those from paintings, the combination of different SR X-ray techniques is often exploited to overcome the intrinsic limitations and sensitivity of the single technique. Less frequently, SR X-ray analyses are combined with SR micro-photoluminescence or micro-Fourier Transform Infrared spectroscopy, which provide complementary information on the molecular composition, offering a unique integrated analysis approach. Although the spatial correlation between the maps obtained with different techniques is not straightforward due to the different volumes probed by each method, the combination of the information provides a greater understanding and insight into the paint chemistry. In this work, we discuss the advantages and disadvantages of the combination of X-ray techniques and SR-based photoluminescence through the study of two paint micro-samples taken from Pablo Picasso's Femme (1907). The painting contains two cadmium yellow paints (based on CdS): one relatively intact and one visibly degraded. SR micro-analyses demonstrated that the two Cd-yellow paints differ in terms of structure, chemical composition, and photoluminescence properties. In particular, on the basis of the combination of different SR measurements, we hypothesize that the degraded yellow is based on nanocrystalline CdS with high presence of Cd(OH)Cl. These two characteristics have enhanced the reactivity of the paint and strongly influenced its stability.
Families of periodic orbits around asteroids: From shape symmetry to asymmetry
Authors: Voyatzis G. , Karydis D. , Tsiganis K. 
Published: May 2022

AbstractIn Karydis et al. (2021) we have introduced the method of shape continuation in order to obtain periodic orbits in the complex gravitational field of an irregularly-shaped asteroid starting from a symmetric simple model. What’s more, we map the families of periodic orbits of the simple model to families of the real asteroid model. The introduction of asymmetries in a gravitational potential may significantly affect the dynamical properties of the families. In this paper, we discuss the effect of the asymmetries in the neighborhood of vertically critical orbits, where, in the symmetric model, bifurcations of 3D periodic orbit families occur. When asymmetries are introduced, we demonstrate that two possible continuation schemes can take place in general. Numerical simulations, using an ellipsoid and a mascon model of 433-Eros, verify the existence of these schemes.
Evolution of INPOP planetary ephemerides and Bepi-Colombo simulations
Authors: Fienga A. , Bigot L. , Mary D. , Deram P. , Di Ruscio A. , Bernus L. , Gastineau M. , Laskar J. 
Published: May 2022

AbstractWe give here a detailed description of the latest INPOP planetary ephemerides INPOP20a. We test the sensitivity of the Sun oblateness determination obtained with INPOP to different models for the Sun core rotation. We also present new evaluations of possible GRT violations with the PPN parameters β, γ and . With a new method for selecting acceptable alternative ephemerides we provide conservative limits of about 7.16 × 10-5 and 7.49 × 10-5 for β-1 and γ-1 respectively using the present day planetary data samples. We also present simulations of Bepi-Colombo range tracking data and their impact on planetary ephemeris construction. We show that the use of future BC range observations should improve these estimates, in particular γ. Finally, interesting perspectives for the detection of the Sun core rotation seem to be reachable thanks to the BC mission and its accurate range measurements in the GRT frame.
The current orbit of Atlas (SXV)
Authors: Tadeu Ceccatto Demétrio , Callegari Nelson , Rodríguez Adrián 
Published: May 2022

AbstractWith the success of the Cassini-Huygens mission, the dynamic complexity surrounding natural satellites of Saturn began to be elucidated. New ephemeris could be calculated with a higher level of precision, which made it possible to study in detail the resonant phenomena and, in particular, the 54:53 near mean-motion resonance between Prometheus and Atlas. For this task, we have mapped in details the domains of the resonance with dense sets of initial conditions and distinct ranges of parameters. Our initial goal was to identify possible regions in the phase space of Atlas for which some critical angles, associated with the 54:53 mean motion have a stable libration. Our investigations revealed that there is no possibility for the current Atlas orbital configuration to have any regular behavior since it is in a chaotic region located at the boundary of the 54:53 mean-motion resonance phase space. This result is in accordance with previous works (Cooper et al. 2015; Renner et al. 2016). In this work, we generalize such investigations by showing detailed aspects of the Atlas-Prometheus 54:53 mean-motion resonance, like the extension of the chaotic layers, the thin domain of the center of the 54:53 resonance, the proximity of other neighborhood resonances, among other secondary conclusions. In particular, we have also shown that even in the deep interior of the resonance, it is difficult to map periodic motion of the resonant pair for very long time spans.
Back-tracing space debris using proper elements
Authors: Celletti Alessandra , Pucacco Giuseppe , Vartolomei Tudor 
Published: May 2022

AbstractNormal form methods allow one to compute quasi-invariants of a Hamiltonian system, which are referred to as proper elements. The computation of the proper elements turns out to be useful to associate dynamical properties that lead to identify families of space debris, as it was done in the past for families of asteroids. In particular, through proper elements we are able to group fragments generated by the same break-up event and we possibly associate them to a parent body. A qualitative analysis of the results is given by the computation of the Pearson correlation coefficient and the probability of the Kolmogorov-Smirnov statistical test.
A compact frequency reconfigurable patch antenna with asymmetric armed U and reversed L slots for handheld wireless devices
Authors: Saikia Bhaben , Borah Kunal 
Published: May 2022

AbstractA frequency reconfigurable microstrip patch antenna with a combination of an asymmetric armed U-slot and a reversed L-slot etched on a rectangular base patch of 6 GHz resonant frequency designed on an FR4 substrate (ɛr = 4.4) is presented in this paper. Three RF PIN diodes are positioned at inimitable sites of these slots to achieve frequency reconfiguration. A DC bias circuitry, which includes DC blocking capacitors and RF blocking inductors, is integrated with the antenna structure for switching (ON/OFF) the PIN diodes. Six reconfigurable modes with resonant frequencies at 4.33, 4.63, 5.24, 5.87, 5.96, and 6.29 GHz is obtained with different ON-OFF combinations of these PIN diodes. These reconfigurable resonant frequencies cover two continuous bands from 4.21 to 5.43 GHz and 5.69 to 6.6 GHz and is considered to be useful for the applications like aeronautical radio navigation (4.3 GHz), sub-6-GHz 5G (4.4–5 GHz), WLAN (5.2 and 5.8 GHz) and Wi-Fi 6E (5.925–6.425 GHz). Measured gain of the antenna for all the modes varies between 5.86 dBi and 8.72 dBi.
Ein halbes Leben lang Corona
Authors: Maldei-Gohring Tobias , Opdensteinen Kim D. , Hellbach Christine , Nowakowski Nils , Graßmann Tim , Hofer Jan , Walther Eva , Hechler Tanja 
Published: May 2022

Zusammenfassung. Theoretischer Hintergrund: Die COVID-19-Pandemie schränkte den Alltag von Vorschulkindern in den letzten zwei Jahren substanziell ein. Fragestellung: Die querschnittliche Studie untersucht, wie Vorschulkinder und ihre Eltern die COVID-19-Pandemie in dieser Zeit erlebten und welche Effekte die Pandemie auf die psychische Gesundheit der Kinder hatte. Methode: In zwei Online-Erhebungen im Mai 2020 und März 2021 wurden insgesamt 304 Eltern von Vorschulkindern (1 – 6 Jahre) befragt. Ergebnisse: Die Resilienz von Kindern und Eltern ist nach einem Jahr vermindert. Es zeigt sich eine hohe Punktprävalenz psychischer Auffälligkeiten (35.3 %), besonders in den Bereichen Verhaltensprobleme und Hyperaktivität. Hypothesenkonform konnten familiäre Spannungen und kindliche Stressbewältigung als Risiko- bzw. Schutzfaktor identifiziert werden. Diskussion und Schlussfolgerung: Die Befunde weisen auf anhaltend negative Auswirkungen der Pandemie auf die psychische Gesundheit von Vorschulkindern hin und zeigen erste Schutzfaktoren auf.
Evolution of Fractal Pore Structure in Sedimentary Rocks
Authors: Zhou Nengwu , Wang Min , Lu Shuangfang , Dodd Thomas J. H. , Liu Wei , Guan Ying 
Published: May 2022

AbstractGeological processes alter pore spaces over time, and their analysis can shed light on the dynamic fractal structure and fluid flow of rocks over time. This study presents experimental evidence to illustrate that the pore fractal structure evolves with sedimentation, carbonate cementation, clay growth, and dissolution. It examines, describes and characterizes a suite of core samples from the Gaotaizi oil layer of the second and third members of the Qingshankou Formation, Songliao Basin, China. The effects of mechanical compaction and other diagenesis effects on fractal pore structure on sedimentary rocks are discussed. A schematic diagram is proposed that describes the impacts of these diagenetic processes on fractal pore structure at the microscopic scale in sedimentary rocks. This work links the state of diagenetic alteration and fractal pore structure, which can guide practical applications such as predicting the permeability of sedimentary rocks.
Pn Anisotropic Tomography of Hainan Island and Surrounding Areas: New Insights Into the Hainan Mantle Plume
Authors: Lu Hongbin , Lei Jianshe , Zhao Dapeng , Xu Yi‐Gang , Sun Changqing , Hu Xiaohui 
Published: May 2022

AbstractA high‐resolution velocity and anisotropy model of the uppermost mantle under the Hainan Island and surrounding areas is obtained by a tomographic inversion of 8192 Pn arrival‐time data hand‐picked from high‐quality seismograms recorded at a total of 137 seismic stations of our recently deployed HAVESArray portable seismic network and Chinese provincial stations. Our new model shows obvious velocity and anisotropic structural features related to the distribution of Quaternary volcanic rocks on the surface. Extensive low Pn velocity anomalies are detected under the Weizhou Island, northern Hainan Island, southern Leizhou Peninsula, southern South China, and around the Pearl River Mouth Basin (PRMB), whereas high Pn velocity anomalies are imaged under the PRMB and areas of 108°–109°E and between the Baise‐Hepu fault and the Wuchuan‐Sihui fault. The Pn fast propagation directions exhibit a radiated pattern around the PRMB. Integrated with previous global and regional tomographic models, our present results indicate that the Hainan plume is upwelling around the PRMB in the upper mantle, and then plume‐related flow is split into several branches under the volcanoes in the northern Hainan Island, southern Leizhou Peninsula and Weizhou Island. This flow pattern could be associated with the westward deep subduction of the Philippine Sea and Pacific plates and eastward deep subduction of the Indian plate. Our results provide new insights into the formation mechanism of the Hainan‐Leizhou and Weizhou volcanoes.