bluuebunny/crossref_metadata_2025_split huggingface dataset:
Conservation planning for Africa's Albertine Rift: conserving a biodiverse region in the face of multiple threats
Authors: Plumptre Andrew J. , Ayebare Sam , Kujirakwinja Deo , Segan Dan 
Published: January 2020

AbstractThe Albertine Rift is one of Africa's most biodiverse regions, but is threatened by habitat loss as a result of agricultural expansion and human development. Previous studies estimated that 30% of the region has been lost to agricultural conversion and we estimate here that 33% is allocated for mining concessions. For conservation planning, we used niche models for species endemic to the Albertine Rift and those that are globally threatened. We assessed where to conserve these species using three scenarios: (1) a baseline assuming equal conservation costs across all grid cells in the study area, (2) a scenario locking in existing protected areas (i.e. always selecting them by default) and assessing which unprotected areas require conservation, and (3) a scenario considering mining planned across the region.Marxananalyses produced similar results for the three scenarios, highlighting the importance of existing protected areas and the value of several community-managed or provincial protected areas in the eastern Democratic Republic of the Congo. The current protected area network covers 134,246 km2and an additional 64,586 km2would be required to ensure the conservation of all threatened and endemic species outside the parks and wildlife reserves. However, if trying to avoid mining concessions this increases to 145,704 km2, an area larger than the existing protected areas. Some mining concessions harbour species with a restricted range and would thus need to be protected to ensure the persistence of threatened and endemic fauna and flora. These mining concessions should be challenged by the conservation community.
Legitimacy in Antarctic governance: The stewardship model
Authors: Vanstappen Nils 
Published: January 2020

AbstractThe international community’s interest in the governance of Antarctica has long been recognised. Consideration of this interest has even been one of the pillars of the Antarctic Treaty System’s legitimacy. The Antarctic Treaty, for example, famously claims to serve “the interest of all mankind.” Yet, exactly how the international community is given a voice in Antarctic deliberations remains unclear. This contribution argues that – with the idea of direct United Nations involvement having been squarely rejected – stewardship could best describe the existing governance model as well as offer a normative framework to assess the system’s legitimacy.
The relationship between antihypertensive medications and mood disorders: analysis of linked healthcare data for 1.8 million patients
Authors: Shaw Richard J. , Mackay Daniel , Pell Jill P. , Padmanabhan Sandosh , Bailey David S. , Smith Daniel J. 
Published: January 2020

AbstractBackgroundRecent work suggests that antihypertensive medications may be useful as repurposed treatments for mood disorders. Using large-scale linked healthcare data we investigated whether certain classes of antihypertensive, such as angiotensin antagonists (AAs) and calcium channel blockers, were associated with reduced risk of new-onset major depressive disorder (MDD) or bipolar disorder (BD).MethodTwo cohorts of patients treated with antihypertensives were identified from Scottish prescribing (2009–2016) and hospital admission (1981–2016) records. Eligibility for cohort membership was determined by a receipt of a minimum of four prescriptions for antihypertensives within a 12-month window. One treatment cohort (n = 538 730) included patients with no previous history of mood disorder, whereas the other (n = 262 278) included those who did. Both cohorts were matched by age, sex and area deprivation to untreated comparators. Associations between antihypertensive treatment and new-onset MDD or bipolar episodes were investigated using Cox regression.ResultsFor patients without a history of mood disorder, antihypertensives were associated with increased risk of new-onset MDD. For AA monotherapy, the hazard ratio (HR) for new-onset MDD was 1.17 (95% CI 1.04–1.31). Beta blockers' association was stronger (HR 2.68; 95% CI 2.45–2.92), possibly indicating pre-existing anxiety. Some classes of antihypertensive were associated with protection against BD, particularly AAs (HR 0.46; 95% CI 0.30–0.70). For patients with a past history of mood disorders, all classes of antihypertensives were associated with increased risk of future episodes of MDD.ConclusionsThere was no evidence that antihypertensive medications prevented new episodes of MDD but AAs may represent a novel treatment avenue for BD.
Design and construction of a bespoke system for the detection of buried, iron-rich meteorites in Antarctica
Authors: Wilson John W. , Marsh Liam A. , Van Verre Wouter , Rose Michael C. , Evatt Geoffrey , Smedley Andrew R.D. , Peyton Anthony J. 
Published: January 2020

AbstractIron-rich meteorites are significantly underrepresented in collection statistics from Antarctica. This has led to a hypothesis that there is a sparse layer of iron-rich meteorites hidden below the surface of the ice, thereby explaining the apparent shortfall. As standard Antarctic meteorite collecting techniques rely upon a visual surface search approach, the need has thus arisen to develop a system that can detect iron objects under a few tens of centimetres of ice, where the expected number density is of the order one per square kilometre. To help answer this hypothesis, a large-scale pulse induction metal detector array has been constructed for deployment in Antarctica. The metal detector array is 6 m wide, able to travel at 15 km h-1 and can scan 1 km2 in ~11 hours. This paper details the construction of the metal detector system with respect to design criteria, notably the ruggedization of the system for Antarctic deployment. Some preliminary results from UK and Antarctic testing are presented. We show that the system performs as specified and should reach the pre-agreed target of the detection of a 100 g iron meteorite at 300 mm when deployed in Antarctica.
Mixed method study of quality of life for children with trisomy 18 and 13 after cardiac surgery
Authors: Weaver Meaghann S. , Birge Nicole , Hsu Howard , Woell Christine , Robinson Jacob E. , Wichman Christopher , Hammel James 
Published: January 2020

AbstractBackground and Objectives:Cardiac surgical interventions for children with trisomy 18 and trisomy 13 remain controversial, despite growing evidence that definitive cardiac repair prolongs survival. Understanding quality of life for survivors and their families therefore becomes crucial. Study objective was to generate a descriptive summary of parental perspectives on quality of life, family impact, functional status, and hopes for children with trisomy 18 and trisomy 13 who have undergone heart surgery.Methods:A concurrent mixed method approach utilising PedsQL™ 4.0 Generic Core Parent Report for Toddlers or the PedsQL™ Infant Scale, PedsQL™ 2.0 Family Impact Module, Functional Status Scale, quality of life visual analogue scale, and narrative responses for 10 children whose families travelled out of state to access cardiac surgery denied to them in their home state due to genetic diagnoses.Results:Parents rated their child’s quality of life as 80/100, and their own quality of life as 78/100 using validated scales. Functional status was rated 11 by parents and 11.6 by providers (correlation 0.89). On quality of life visual analogue scale, all parents rated their child’s quality of life as “high” with mean response 92.7/100. Parental hopes were informed by realistic perspective on prognosis while striving to ensure their children had access to reaching their full potential. Qualitative analysis revealed a profound sense of the child’s relationality and valued life meaning.Conclusion:Understanding parental motivations and perceptions on the child’s quality of life has potential to inform care teams in considering cardiac interventions for children with trisomy 18 and trisomy 13.
Are children with protein-losing enteropathy after the Fontan operation at increased risk of cytomegalovirus enteropathy? A report of two cases
Authors: Bauer Christoph , Tulzer Gerald 
Published: January 2020

AbstractIntroduction:Aetiology of protein-losing enteropathy in single-ventricle type CHD is multi-factorial.Report:We describe two Fontan patients with protein-losing enteropathy who presented with cytomegalovirus-associated colitis.Discussion:Fontan patients display risk factors for cytomegalovirus-induced gastroenteropathy that may affect lymph angiogenesis, disease development, and progression.Conclusion:Cytomegalovirus enteropathy may be common among Fontan patients who suffer from protein-losing enteropathy. Polymerase chain reaction is important for detection.
WOMEN IN FRONTIER ARKANSAS
Authors: Elman Cheryl , Wittman Barbara , Feltey Kathryn M. , Stevens Corey , Hartsough Molly 
Published: January 2020

AbstractArkansas was a demographic frontier after the U.S. Civil War. Despite marked agricultural land deforestation and development after the 1870s, it remained agrarian well into the twentieth century. We fuse life course and racial state frameworks to examine Black and White women’s settlement in Arkansas over the post-Civil War period (1880-1910). A racial state empowers residents and enacts policies based on race rather than equal citizenship rights. We highlight three institutional domains shaped by racial state policies:productive economies(subsistence, mixed commercialism, and plantation production);stratificationon an agricultural ladder (from sharecropping to forms of tenancy to farm ownership); andrules of raced (and gendered) social control. We examine women’s settlement patterns and related outcomes in an institutional context at different life course stages using mixed methods: women’s oral histories and Census data analysis. We find that by 1880 White women and families, less attracted by forces of marketization, had largely migrated to subsistence and mixed commercial subregions. Black women and families, generally desiring to rise on the agricultural ladder to farm ownership, largely migrated to the rich lands found in plantation production counties. Black women in Arkansas could rise but, by 1910, new racial state (Jim Crow) policies more severely limited travel, material resources, and education for tenant farm families, predominantly Black, in the plantation subregion. Commensurate with this, Black women in the plantation subregion had experienced less status mobility on the agricultural ladder, with reduced living standards, by later life.
Around Buzzards Bay to a World of Ocean Science: A Personal Perspective
Authors: Farrington John W. 
Published: January 2020

AbstractReading books, a chemistry set, living by the sea, and a chance attendance by John Farrington at a seminar led to doctor of philosophy studies in ocean sciences at the Graduate School of Oceanography, University of Rhode Island, with a focus on organic chemicals in estuarine ecosystems. An unexpected discovery of a chronic oil pollution problem during these studies set a course for a career of research at the Woods Hole Oceanographic Institution focused on the biogeochemistry of biogenic organic chemicals and organic chemicals of environmental concern such as oil chemicals and polychlorinated biphenyls. This involved cruises to deep open ocean, continental margin, and coastal ecosystems. Several times, the research was influenced by unexpected observations opening important avenues of inquiry. Details of portions of the ocean carbon cycle, especially water column particles and surface sediments, were unraveled. Environmental quality‐related research led to activities at the science‐policy interface. These laboratory group efforts have been recognized by my election as a fellow of the American Geophysical Union and the American Association for the Advancement of Science, among other recognitions.
Oxygen Isotopes in Authigenic Clay Minerals: Toward Building a Reliable Salinity Proxy
Authors: Gebregiorgis D. , Deocampo D. M. , Longstaffe F. J. , Simpson A. , Ashley G. M. , Beverly E. J. , Delaney J. S. , Cuadros J. 
Published: January 2020

AbstractMost clay minerals in sedimentary environments have traditionally been considered to be of detrital origin, but under certain conditions, authigenic clay minerals can form at low temperature through the transformation of precursor clays or as direct precipitates from lake water. Such clay minerals can hold important information about the prevailing climatic conditions during the time of deposition. We present the first quantitative reconstruction of salinity in paleolake Olduvai based on the oxygen‐isotope composition of authigenic clay minerals. We provide a framework illustrating that the isotopic signature of authigenic lacustrine clay minerals is related to the isotopic composition of paleo‐waters, and hence to paleosalinity. This new paleosalinity proxy shows that the early Pleistocene East African monsoon was driven by combinations of precession and obliquity forcing and subsequent changes in tropical sea surface temperatures. Such quantitative lacustrine paleosalinity estimates provide a new direction of research for modeling ecosystem change based on an ecologically relevant parameter.
Global Coupled Climate Response to Polar Sea Ice Loss: Evaluating the Effectiveness of Different Ice‐Constraining Approaches
Authors: Sun Lantao , Deser Clara , Tomas Robert A. , Alexander Michael 
Published: January 2020

AbstractCoupled ocean‐atmosphere models have been utilized to investigate the global climate response to polar sea ice loss using different approaches to constrain ice concentration and thickness. The goal of this study is to compare two commonly used methods within a single model framework: ice albedo reduction, which is energy conserving, and ice‐flux nudging, which is not energy conserving. The two approaches generate virtually identical equilibrium global climate responses to the same seasonal cycle of sea ice loss. However, while ice‐flux nudging is able to control the sea ice state year‐round, albedo reduction is most effective during summer and lessens the effects of climate change in winter due to the underestimation of sea ice loss. These evaluations have implications for the Polar Amplification Model Intercomparison Project (PAMIP), which proposes a set of coordinated coupled model experiments but without a defined protocol on how to constrain sea ice.
Direct Radiative Effect by Mineral Dust Aerosols Constrained by New Microphysical and Spectral Optical Data
Authors: Di Biagio C. , Balkanski Y. , Albani S. , Boucher O. , Formenti P. 
Published: January 2020

AbstractWe revise the direct radiative effect (DRE) of mineral dust aerosols in the shortwave (SW) and longwave (LW) based on global model simulations that include coarse dust particles (>20 μm) and a new LW complex refractive index data set representative of major global sources. Simulations are constrained against observed dust size distributions and optical depth. Scattering of LW radiation is accounted for in the analysis. The extension of the dust size beyond 20 μm causes a reduction in the SW DRE compared to current model estimates, while the LW DRE remains within published values due to compensating effects between changing size distribution, complex refractive index, and accounting for dust scattering. The dust direct radiative effect efficiency from model simulations reproduces well field observations close to sources and after transport. The global mean net effect of dust is −0.03 Wm−2 as a result of cooling over oceans and warming over land.
On the Statistical Significance of Foreshock Sequences in Southern California
Authors: van den Ende M. P. A. , Ampuero J.‐P. 
Published: January 2020

AbstractEarthquake foreshocks may provide information that is critical to short‐term earthquake forecasting. However, foreshocks are far from ubiquitously observed, which makes the interpretation of ongoing seismic sequences problematic. Based on a statistical analysis, Trugman and Ross (2019, https://doi.org/10.1029/2019GL083725) suggested that as much as 72% of all mainshocks in Southern California is preceded by foreshock sequences. In this study, we reassess the analysis of Trugman and Ross (2019, https://doi.org/10.1029/2019GL083725), and we evaluate the impact of the assumptions made by these authors. Using an alternative statistical approach, we find that only 15 out of 46 mainshocks (33%) are preceded by significantly elevated seismicity rates. When accounting for temporal fluctuations in the background seismicity, only 18% of the analyzed foreshock sequences remain unexplained by the background seismicity. These results imply that even in a highly complete earthquake catalog, the majority of earthquakes do not exhibit detectable foreshock sequences.
Tracer Measurements in Growing Sea Ice Support Convective Gravity Drainage Parameterizations
Authors: Thomas M. , Vancoppenolle M. , France J. L. , Sturges W. T. , Bakker D. C. E. , Kaiser J. , von Glasow R. 
Published: January 2020

AbstractGravity drainage is the dominant process redistributing solutes in growing sea ice. Modeling gravity drainage is therefore necessary to predict physical and biogeochemical variables in sea ice. We evaluate seven gravity drainage parameterizations, spanning the range of approaches in the literature, using tracer measurements in a sea ice growth experiment. Artificial sea ice is grown to around 17 cm thickness in a new experimental facility, the Roland von Glasow air‐sea‐ice chamber. We use NaCl (present in the water initially) and rhodamine (injected into the water after 10 cm of sea ice growth) as independent tracers of brine dynamics. We measure vertical profiles of bulk salinity in situ, as well as bulk salinity and rhodamine in discrete samples taken at the end of the experiment. Convective parameterizations that diagnose gravity drainage using Rayleigh numbers outperform a simpler convective parameterization and diffusive parameterizations when compared to observations. This study is the first to numerically model solutes decoupled from salinity using convective gravity drainage parameterizations. Our results show that (1) convective, Rayleigh number‐based parameterizations are our most accurate and precise tool for predicting sea ice bulk salinity; and (2) these parameterizations can be generalized to brine dynamics parameterizations, and hence can predict the dynamics of any solute in growing sea ice.
Vertical Distributions of Raindrops and Z‐R Relationships Using Microrain Radar and 2‐D‐Video Distrometer Measurements During the Integrative Monsoon Frontal Rainfall Experiment (IMFRE)
Authors: Zhou Lingli , Dong Xiquan , Fu Zhikang , Wang Bin , Leng Liang , Xi Baike , Cui Chunguang 
Published: January 2020

AbstractThe vertical characteristics of raindrop size distributions (DSD) and Z‐R relationships for monsoon frontal rainfall have been investigated using the co‐located two‐dimensional video disdrometer and micro rain radar at the Xianning surface site, and the S‐band weather radar at the Wuhan radar site during the Integrative Monsoon Frontal Rainfall Experiment (IMFRE). In this study, a total of 1,896 rain samples (1‐min resolution) were collected and classified into three categories of convective rain (CR), stratiform rain (SR), and light rain (LR), and their corresponding rain microphysical properties were explored. The LR category is dominated by the evaporation of smaller raindrops and the break‐up processes of larger raindrops, resulting in decreasing trends in radar reflectivity and rain rate as the raindrops fall. The SR category undergoes a competition of break‐up and coalescence processes, with weak increases in radar reflectivity and rain rate. Whereas, for the CR category, the coalescence process is dominant on the falling path of raindrops, especially below 1 km, leading to sharp increases in radar reflectivity and rain rate. The microrain radar data at height of 200 m is quantitatively compared with the two‐dimensional video disdrometer data, and a good agreement is found between them. Further, the number concentrations of raindrops are negatively correlated with the diameters of raindrops and discrepant significantly at different heights among the three rain categories. The height‐dependent Z‐R relationships found for LR, SR, and CR categories will provide insightful information for improving radar rainfall estimate of monsoon frontal rainfall over central China in the future.
Detection of acute 3,4-methylenedioxymethamphetamine (MDMA) effects across protocols using automated natural language processing
Authors: Agurto Carla , Cecchi Guillermo A. , Norel Raquel , Ostrand Rachel , Kirkpatrick Matthew , Baggott Matthew J. , Wardle Margaret C. , Wit Harriet de , Bedi Gillinder 
Published: January 2020

AbstractThe detection of changes in mental states such as those caused by psychoactive drugs relies on clinical assessments that are inherently subjective. Automated speech analysis may represent a novel method to detect objective markers, which could help improve the characterization of these mental states. In this study, we employed computer-extracted speech features from multiple domains (acoustic, semantic, and psycholinguistic) to assess mental states after controlled administration of 3,4-methylenedioxymethamphetamine (MDMA) and intranasal oxytocin. The training/validation set comprised within-participants data from 31 healthy adults who, over four sessions, were administered MDMA (0.75, 1.5 mg/kg), oxytocin (20 IU), and placebo in randomized, double-blind fashion. Participants completed two 5-min speech tasks during peak drug effects. Analyses included group-level comparisons of drug conditions and estimation of classification at the individual level within this dataset and on two independent datasets. Promising classification results were obtained to detect drug conditions, achieving cross-validated accuracies of up to 87% in training/validation and 92% in the independent datasets, suggesting that the detected patterns of speech variability are associated with drug consumption. Specifically, we found that oxytocin seems to be mostly driven by changes in emotion and prosody, which are mainly captured by acoustic features. In contrast, mental states driven by MDMA consumption appear to manifest in multiple domains of speech. Furthermore, we find that the experimental task has an effect on the speech response within these mental states, which can be attributed to presence or absence of an interaction with another individual. These results represent a proof-of-concept application of the potential of speech to provide an objective measurement of mental states elicited during intoxication.
Processing supramolecular framework for free interconvertible liquid separation
Authors: Zhang Guohua , Li Bingyu , Zhou Yan , Chen Xiaofei , Li Bao , Lu Zhong-Yuan , Wu Lixin 
Published: January 2020

AbstractNanoporous structures constructed by small molecular components exhibited vigorous materials potentials. While maintianing uniform porosity and functional properties, more applicable processing methods for the solid powders need to be considered and the improvement of binding interactions represents a preferable approach for structural flexibility. Here, by combining ionic interaction and host-guest inclusion, we constructed flexible supramolecular frameworks composing of inorganic polyanionic clusters, cationic organic hosts, and a bridging guest. The formed layer framework structure assemblies grew into nano-fibers and then supramolecular gels, donating highly convenient processability to porous materials. A simple spin-coating generated a new type of liquid separation membranes which showed structural stability for many liquids. The surface properties can be facilely modulated via filling a joystick liquid and then a hydrophilic/hydrophobic liquid into the porous frameworks, providing in-situ consecutive switchings for cutting liquids. This strategy extends the potential of flexible supramolecular frameworks for responsive materials in the laboratory and in industry.