bluuebunny/crossref_metadata_2025_split huggingface dataset:
Removal of SARS-CoV-2 bioaerosols using ultraviolet air filtration
Authors: Barnewall Roy E. , Bischoff Werner E. 
Published: March 2021

AbstractEngineering controls play an important role in reducing the spread of severe acute respiratory coronavirus virus 2 (SARS-CoV-2).1 Established technologies such as air filtration, and novel approaches such as ultraviolet (UV)-C light or plasma air ionization, have the potential to support the fight against the coronavirus disease 2019 (COVID-19) pandemic.2 We tested the efficacy of an air purification system (APS) combining UV-C light and high-efficiency particulate air (HEPA) filtration in a controlled environment using SARS-CoV-2 as test organism. The APS successfully removed the virus from the air using UV-C light by itself and in combination with HEPA air filtration.
Benthic foraminifera from the Albian shallow-marine limestones in the Geyik Dağı area (Central Taurides), southern Turkey
Authors: Solak Cemile , Taslı Kemal , Koç Hayati 
Published: March 2021

AbstractCretaceous carbonates in the Geyik Dağı area (Central Taurides, southern Turkey) are represented by two successions with different paleoenvironmental settings: open shelf to slope succession of Cenomanian to Danian age and inner platform succession of Albian to Maastrichtian age, which is interrupted by a post-Cenomanian disconformity. Outcropped lowermost part of the platform-type one is composed of rudistid limestones corresponding to the Urgonian-type carbonates and belongs to the Geyik Dağı Unit (=Anamas-Akseki Carbonate Platform). It contains a rich assemblage of larger benthic foraminifera including orbitolinid, chrysalidinid, cuneolinid, nezzazatid, and miliolid taxa, which has been illustrated and documented here for the first time from the upper Albian of the Tauride Carbonate Platform. The occurrence of such a diversified foraminiferal fauna indicates a prominent high diversity that took place in the Tauride Carbonate Platform during the late Albian time, which corresponds to a major emersion period in some parts of the platform.
Timing and nature of intracontinental deformation at the northwestern margin of the Sichuan Basin, China: evidence from structural analysis and detrital zircon U–Pb ages
Authors: Liu Songnan , Wang Yu , Ma Huimin , Qian Tao 
Published: March 2021

AbstractThe theory of plate tectonics suggests that deformation occurs mainly along plate boundaries; however, compression can result in the formation of orogens and basins within intracontinental settings. During these two tectonic processes, the sedimentation and environmental changes occur in response to marginal and intracontinental deformation. Early Jurassic – Early Cretaceous deformation and basin formation along the Qinling orogenic belt and the northwestern Sichuan Basin in central–SW China are ideal for investigating a reactivated tectonic belt and basin formation. We studied the Lower Jurassic – Lower Cretaceous sedimentary sequences and structures along the northwestern margin of the Sichuan Basin, and obtained detrital zircon U–Pb ages for these rocks. The structures show that deformation migrated SE-wards and S-wards into the Sichuan Basin along the Longmen Shan, Micang Shan and Daba Shan tectonic belts during middle–late Mesozoic time. The Lower Jurassic oligomictic conglomerates have a smaller grain size and thicken towards the south, indicating protracted transport from a northern source. The conglomerates deposited near-source record post-orogenic south-vergent thrusting during the Late Triassic – Early Jurassic epochs. The Lower Cretaceous conglomerates and sandstones have multiple sources, which indicate that they were rapidly deposited near their source, synchronous with thrusting that occurred in response to coeval SE-wards and S-wards thrusting in the Longmen Shan and Daba Shan tectonic belts during the Late Jurassic – Early Cretaceous epochs. Detrital zircon grains from the Lower Jurassic – Lower Cretaceous sedimentary rocks yielded age peaks of 2600–2200, 1850–1600, 850–700, 540–400, 250–180 and 180–140 Ma. A comparison of these ages with those of surrounding exposed rocks indicates that the sediments in the northwestern Sichuan Basin were supplied from the Qinling orogenic belt, the northwestern Yangtze Block, the south margin of the North China Block and the Songpan–Garzê Terrane. The youngest peaks of detrital zircon U–Pb ages at 207 and 159 Ma constrain the two stages of intracontinental shortening and highlight the link between intracontinental deformation and sedimentation.
Privatizing the Commons: Protest and the Moral Economy of National Resources in Jordan
Authors: Lacouture Matthew 
Published: March 2021

AbstractThis article interrogates the social impact of one aspect of structural adjustment in the Hashemite Kingdom of Jordan: privatization. In the mid-2000s, King Abdullah II privatized Jordan's minerals industry as part of the regime's accelerated neoliberal project. While many of these privatizations elicited responses ranging from general approval to ambivalence, the opaque and seemingly corrupt sale of the Jordan Phosphate Mines Company (JPMC) in 2006 was understood differently, as an illegitimate appropriation of Jordan's national resources and, by extension, an abrogation of the state's (re-) distributive obligations. Based on interviews with activists, I argue that a diverse cross-section of social movement constituencies – spanning labour and non-labour movements (and factions within and across those movements) – perceived such illegitimate privatizations as a moral violation, which, in turn, informed transgressive activist practices and discourses targeting the neoliberal state. This moral violation shaped the rise and interaction of labour and non-labour social movements in Jordan's “Arab uprisings”, peaking in 2011–2013. While Jordan's uprisings were largely demobilized after 2013, protests in 2018 and 2019 demonstrate the continued relevance of this discourse. In this way, the 2011–2013 wave of protests – and their current reverberations – differ qualitatively from Jordan's earlier wave of “food riots” in 1989 (and throughout the 1990s), which I characterize as primarily restorative in nature.
Buy them out before they are built: evaluating the proactive acquisition of vacant land in flood-prone areas
Authors: Atoba Kayode , Newman Galen , Brody Samuel , Highfield Wesley , Kim Youjung , Juan Andrew 
Published: March 2021

SummaryRising flood damages have prompted local communities to implement buyout and property acquisition programmes to eliminate repetitive losses for at-risk properties. However, buyouts are often costly to implement and are reactionary solutions to flooding. This study quantifies the benefits of acquiring vacant private properties in flood-prone areas rather than acquiring such properties after they are built up. Using a geodesign framework that integrates concepts and analytical approaches derived from geographical, spatial and statistical-based disciplines, we analyse vacant properties with high development potential that intersect current and future floodplain areas in Houston (TX, USA). We use geospatial proximity analysis to select candidate properties, land-use prediction modelling to estimate future development and sea-level rise and benefit–cost analysis to assess the economic viability of buyouts. The results indicate that cumulative avoided flood losses exceed the cost of vacant land acquisition by a factor of nearly two to one, and up to a factor of ten to one in selected areas. This study emphasizes the benefits of proactive property buyouts that focus on acquiring parcels before they are built up, while also avoiding the social and institutional problems associated with traditional buyout programmes.
Traumatic mitral annular avulsion and interventricular septum dissection
Authors: Ma Huibo , Zhang Haizhou , Ma Xiaochun 
Published: March 2021

AbstractWe presented a rare case of traumatic mitral annular avulsion and interventricular septum dissection after an unintentional falling injury in a 5-year-old female child. A successful surgical repair of mitral annulus and interventricular septum was performed to restore the haemodynamic stability.
Medicare for All, Some, or None? Testing the Effects of Ambiguity in the Context of the 2020 Presidential Election
Authors: Simas Elizabeth N. 
Published: March 2021

ABSTRACTPolitical scientists have long contemplated whether candidates are better off taking more ambiguous policy positions. Taking advantage of a lack of clarity in Senator Kamala Harris’s healthcare position, I use an original survey experiment to apply these theories to the case of the 2020 presidential election. I find that ambiguity offers Harris little to no advantage over two of her leading Democratic primary opponents and, among certain subjects, harms her relative to Senator Elizabeth Warren. I also find negative effects on Harris’s favorability relative to President Donald Trump. These results have interesting implications for both the 2020 election and the broader study of candidate rhetoric because they illustrate potential downsides to avoiding clear issue statements.
Learning through Peer Reviewing and Publishing in the Pi Sigma Alpha Undergraduate Journal of Politics: Twenty Years Later
Authors: Walker Christina P. , Towner Terri L. , Clawson Rosalee A. , Oxley Zoe M. , Nemacheck Christine L. , Rapoport Ronald 
Published: March 2021

ABSTRACTThe Pi Sigma Alpha Undergraduate Journal of Politics (PSAJ), sponsored by the Pi Sigma Alpha National Honor Society, was founded in 2001 at Purdue University. After 20 years, much has changed in undergraduate research and publishing, but the benefits of producing a peer-reviewed journal remain the same. Undergraduate research has increased in prominence, and the journal has modernized to meet these transformations. This article describes the history, purpose, and operations of the PSAJ. Most important, a survey of former Editorial Board members, Pi Sigma Alpha Faculty Chapter Advisors, and published authors in the journal reveal attitudes toward operating an undergraduate journal, using undergraduate research in the college classroom, and publishing in a peer-reviewed journal, respectively. We conclude with calls to continue to encourage undergraduate research and to assign published undergraduate research in upper-level courses.
Cognitive analysis of specific threat beliefs and safety-seeking behaviours in generalised anxiety disorder: revisiting the cognitive theory of anxiety disorders
Authors: Gústavsson Sævar M. , Salkovskis Paul M. , Sigurðsson Jón F. 
Published: March 2021

AbstractBackground:Generalised anxiety disorder (GAD) has been an uneasy member of the anxiety disorders group since its inclusion in the third edition of the DSM. Multiple theories and treatment protocols for GAD and its defining symptom, excessive worry, have comparable efficacy in treating GAD symptoms. Crucially, these theories of GAD and excessive worry fail to explain when and why worry is excessive and when it is adaptive.Aims:In this paper we propose a cognitive behavioural account of the difference between excessive and adaptive states of worry and explore the theme of threat and the function of safety-seeking behaviours as seen in GAD. Specifically, we incorporate the concept of inflated responsibility in a cognitive behavioural analysis of threat appraisal and safety-seeking behaviours in excessive worry and GAD.Conclusion:It is proposed that when worry is used as a strategy intended to increase safety from perceived social or physical threat then it should be conceptualised as a safety-seeking behaviour. However, when worry is used as a strategy to solve a problem which the person realistically can resolve or to deal explicitly with the feeling of anxiety then it functions as an adaptive coping behaviour. We also propose that the theme of threat in GAD centres on an inflated sense of responsibility for external everyday situations, and the function of safety-seeking behaviours is to attain certainty that responsibility has been fulfilled. The clinical implications of this cognitive behavioural analysis of excessive worry are discussed, as well as future research directions.
Perceptions of a food benefit programme that includes financial incentives for the purchase of fruits and vegetables and restrictions on the purchase of foods high in added sugar
Authors: Fagbenro Fatima A , Lasswell Tessa , Rydell Sarah A , Oakes J Michael , Elbel Brian , Harnack Lisa J 
Published: March 2021

AbstractObjective:To report perspectives of participants in a food benefit programme that includes foods high in added sugar (FAS) restrictions and FAS restrictions paired with fruits and vegetables (F/V) incentives.Design:Randomised experimental trial in which participant perspectives were an exploratory study outcome.Setting:Participants were randomised into one of three Supplemental Nutrition Assistance Program (SNAP)-like food benefit programme groups: (1) restriction: not allowed to buy FAS with benefits; (2) restriction paired with incentive: not allowed to buy FAS with benefits and 30 % financial incentive on eligible F/V purchased using benefits; or (3) control: same food purchasing rules as SNAP. Participants were asked questions to assess programme satisfaction.Participants:Adults in the Minneapolis-St. Paul, MN metropolitan area, eligible for but not currently participating in SNAP who completed baseline and follow-up study measures (n 254).Results:Among remaining households in each group, most found the programme helpful in buying nutritious foods (88·2 %–95·7 %) and were satisfied with the programme (89·1 %–93·0 %). Sensitivity analysis results indicate that reported helpfulness and satisfaction with the programme may in some instances be lower among the restriction and the restrictions paired with incentive groups in comparison to the control group.Conclusions:A food benefit programme that includes restriction on purchase of FAS or restriction paired with a financial incentive for F/V purchases may be acceptable to most SNAP-eligible households with children.
Institutional incentives and community policing
Authors: Fegley Tate 
Published: March 2021

AbstractMost American police departments claim to practice community-oriented policing (COP). The stated goals are to build partnerships between the police and the community, maintain order and quality of life, and solve problems that contribute to crime and fear of crime. However, researchers have noted how most departments attempting to implement COP have fallen short in successfully adopting the recommended reforms. This paper argues that the institutional setting in which American public policing operates leads to this result. By contrast, the institutional features of private security make its operation more conducive to achieving the goals of COP. These institutional differences include whether economic calculation is possible, the domain that is policed, and which rules are enforced.
Graphene-based wide band semi-flexible array antenna with parasitic patch for smart wireless devices
Authors: Vashi Ronak , Upadhyaya Trushit , Desai Arpan 
Published: March 2021

AbstractIn this paper, a semi-flexible 2 × 1 array antenna is proposed with epoxy glass fiber and graphene as patch and ground, respectively. Microstrip patch antenna with a center parasitic patch of half-wavelength and slot in the radiating patch have been incorporated for the bandwidth enhancement in order of 79.56% (2.21–5.13 GHz). The antenna has an overall size of 0.30λ × 0.24λ at a lower frequency of operation (2.45 GHz). The incorporation of slotted Graphene in radiating element leads to a wideband regime with satisfactory gain values of 2.73 and 3.744 dBi at 2.40 and 4.0 GHz, respectively. Antenna radiation efficiency in the range of 78% with linear polarization makes the antenna appropriate for WLAN band and smart wireless devices application.
Depression and increased risk of non-alcoholic fatty liver disease in individuals with obesity
Authors: Cho In Young , Chang Yoosoo , Sung Eunju , Kang Jae-Heon , Wild Sarah H. , Byrne Christopher D. , Shin Hocheol , Ryu Seungho 
Published: March 2021

Abstract

Aims
The longitudinal relationship between depression and the risk of non-alcoholic fatty liver disease is uncertain. We examined: (a) the association between depressive symptoms and incident hepatic steatosis (HS), both with and without liver fibrosis; and (b) the influence of obesity on this association.

Methods
A cohort of 142 005 Korean adults with neither HS nor excessive alcohol consumption at baseline were followed for up to 8.9 years. The validated Center for Epidemiologic Studies-Depression score (CES-D) was assessed at baseline, and subjects were categorised as non-depressed (a CES-D < 8, reference) or depression (CES-D ⩾ 16). HS was diagnosed by ultrasonography. Liver fibrosis was assessed by the fibrosis-4 index (FIB-4). Parametric proportional hazards models were used to estimate the adjusted hazard ratios (aHRs) and 95% confidence intervals (CIs).

Results
During a median follow-up of 4.0 years, 27 810 people with incident HS and 134 with incident HS plus high FIB-4 were identified. Compared with the non-depressed category, the aHR (95% CIs) for incident HS was 1.24 (1.15–1.34) for CES-D ⩾ 16 among obese individuals, and 1.00 (0.95–1.05) for CES-D ⩾ 16 among non-obese individuals (p for interaction with obesity <0.001). The aHR (95% CIs) for developing HS plus high FIB-4 was 3.41 (1.33–8.74) for CES-D ⩾ 16 among obese individuals, and 1.22 (0.60–2.47) for CES-D ⩾ 16 among non-obese individuals (p for interaction = 0.201).

Conclusions
Depression was associated with an increased risk of incident HS and HS plus high probability of advanced fibrosis, especially among obese individuals.
UAVSAR Observations of InSAR Polarimetric Phase Diversity: Implications for NISAR Ionospheric Phase Estimation
Authors: Brancato V. , Fattahi H. 
Published: March 2021

AbstractThe NASA‐ISRO Synthetic Aperture Radar (NISAR) is a repeat‐pass radar mission that will acquire fully polarimetric SAR data in an innovative acquisition mode known as quasi‐quad pol (QQP). It consists of simultaneously operating a HH/HV and a VH/VV dual‐pol modes in the lowest and upper parts of the transmitted frequency spectrum. Compared to more traditional acquisition modes, the ionospheric phase estimation algorithms for QQP repeat‐pass data will likely exploit the difference of two sub‐band SAR interferograms acquired not only at distinct center frequencies but also at different polarizations (e.g., HH/VV), making the ionospheric phase estimation vulnerable to possible bias caused by polarimetric interferometric scattering phase components. Using UAVSAR airborne data, we show that temporal variations of the interferometric scattering phase may introduce spurious polarimetric‐dependent phase terms which may bias QQP ionospheric phase estimates. The magnitude of this bias depends on the type of observed land cover. For bare soil and forested areas, we detect HH‐VV interferometric phase discrepancies up to 30° over 12 days, corresponding to a 10 cm bias at L‐band. Over comparable time intervals, changes in vegetation vitality introduce HH‐VV interferometric phase inconsistencies beyond 90° for vertically oriented agricultural fields. We simulate the QQP ionospheric phase screen over the San Andreas Fault, USA, a region characterized by a mixture of vegetated and bare soil surfaces. Based on the results from the UAVSAR data analysis, we recommend using the same polarization on the main and side‐bands of the NISAR operational science modes (e.g., single‐pol or dual‐pol) to avoid potential biases in the ionospheric phase estimates.
Eruptive Cycle and Bubble Trap of Strokkur Geyser, Iceland
Authors: Eibl Eva P. S. , Müller Daniel , Walter Thomas R. , Allahbakhshi Masoud , Jousset Philippe , Hersir Gylfi Páll , Dahm Torsten 
Published: March 2021

AbstractThe eruption frequency of geysers can be studied easily on the surface. However, details of the internal structure including possible water and gas filled chambers feeding eruptions and the driving mechanisms often remain elusive. We used a multidisciplinary network of seismometers, video cameras, water pressure sensors and one tiltmeter to study the eruptive cycle, internal structure, and mechanisms driving the eruptive cycle of Strokkur geyser in June 2018. An eruptive cycle at Strokkur always consists of four phases: (1) Eruption, (2) post‐eruptive conduit refilling, (3) gas filling of the bubble trap, and (4) regular bubble collapse at shallow depth in the conduit. For a typical single eruption 19 ± 4 bubble collapses occur in Phase 3 and 8 ± 2 collapses in Phase 4 at a mean spacing of 1.52 ± 0.29 and 24.5 ± 5.9 s, respectively. These collapses release latent heat to the fluid in the bubble trap (Phase 3) and later to the fluid in the conduit (Phase 4). The latter eventually reaches thermodynamic conditions for an eruption. Single to sextuple eruptions have similar spacings between bubble collapses and are likely fed from the same bubble trap at 23.7 ± 4.4 m depth, 13–23 m west of the conduit. However, the duration of the eruption and recharging phase linearly increases likely due to a larger water, gas and heat loss from the system. Our tremor data provides documented evidence for a bubble trap beneath a pool geyser.
A 3D Full Stress Tensor Model for Oklahoma
Authors: Chai Chengping , Delorey Andrew A. , Maceira Monica , Levandowski Will , Guyer Robert A. , Zhang Haijiang , Coblentz David , Johnson Paul A. 
Published: March 2021

AbstractThe stress tensor is an important property for upper crustal studies such as those that involve pore fluids and earthquake hazards. At tectonic plate scale, plate boundary forces and mantle convection are the primary drivers of the stress field. In many local settings (10–100 s of km and <10 km depth) in tectonic plate interiors, we can simplify by assuming a constant background stress field that is perturbed by local heterogeneity in density and elasticity. Local stress orientation and sometimes magnitude can be estimated from earthquake and borehole‐based observations when available. Modeling of the local stress field often involves interpolating sparse observations. We present a new method to estimate the 3D stress field in the upper crust and demonstrate it for Oklahoma. We created a 3D material model by inverting multiple types of geophysical observations simultaneously. Integrating surface‐wave dispersion, local travel times and gravity observations produces a model of P‐wave velocity, S‐wave velocity, and density. The stress field can then be modeled using finite element simulations. The simulations are performed using our simplified view of the local stress field as the sum of a constant background stress field that is perturbed by local density and elasticity heterogeneity and gravitational body forces. An orientation of N82°E, for the maximum compressive tectonic force, best agrees with previously observed stress orientations and faulting types in Oklahoma. The gravitational contribution of the horizontal stress field has a magnitude comparable to the tectonic contribution for the upper 5 km of the subsurface.