bluuebunny/crossref_metadata_2025_split huggingface dataset:
Wakefield acceleration
Authors: Tajima T. , Yan X. Q. , Ebisuzaki T. 
Published: May 2020

AbstractThe fundamental idea of Laser Wakefield Acceleration (LWFA) is reviewed. An ultrafast intense laser pulse drives coherent wakefields of relativistic amplitude with the high phase velocity robustly supported by the plasma. The structures of wakes and sheaths in plasma are contrasted. While the large amplitude of wakefields involves collective resonant oscillations of the eigenmode of the entire plasma electrons, the wake phase velocity ~ c and ultrafastness of the laser pulse introduce the wake stability and rigidity. When the phase velocity gets smaller, wakefields turn into sheaths. When we deploy laser ion acceleration or high density LWFA in which the phase velocity of plasma excitation is low, we encounter the sheath dynamics. A large number of world-wide experiments show a rapid progress of this concept realization toward both the high energy accelerator prospect and broad applications. The strong interest in this has driven novel laser technologies, including the Chirped Pulse Amplification, the Thin Film Compression (TFC), the Coherent Amplification Network, and the Relativistic Compression (RC). These in turn have created a conglomerate of novel science and technology with LWFA to form a new genre of high field science with many parameters of merit in this field increasing exponentially lately. Applications such as ion acceleration, X-ray free electron laser, electron and ion cancer therapy are discussed. A new avenue of LWFA using nanomaterials is also emerging, adopting X-ray laser using the above TFC and RC. Meanwhile, we find evidence that the Mother Nature spontaneously created wakefields that accelerate electrons and ions to very high energies.
The Case for Modelled Democracy
Authors: Ahlstrom-Vij Kristoffer 
Published: May 2020

AbstractThe fact that most of us are ignorant on politically relevant matters presents a problem for democracy. In light of this, some have suggested that we should impose epistemic constraints on democratic participation, and specifically that the franchise be restricted along competency lines – a suggestion that in turn runs the risk of violating a long-standing condition on political legitimacy to the effect that legitimate political arrangements cannot be open to reasonable objections. The present paper therefore outlines a way to solve the problem of public ignorance without restricting the franchise. The proposal involves filtering the electoral input of a universal franchise through a statistical model that simulates what the public's political preferences would have been, had they been informed on politically relevant matters. The result is modelled democracy. A case is made that such democracy both solves the problem of public ignorance and satisfies the aforementioned condition on legitimacy.
Philanthropy for global mental health 2000–2015
Authors: Iemmi Valentina 
Published: May 2020

Abstract

Background
Mental disorders are the leading cause of years lived with disability worldwide. While over three-quarters of people with mental disorders live in low- and middle-income countries (LMICs) and effective low-cost interventions are available, resource commitments are extremely limited. This paper seeks to understand the role of philanthropy in this area and to inform discussions about how to increase investments.

Methods
Novel analyses of a dataset on development assistance for health were conducted to study philanthropic development assistance for mental health (DAMH) in 156 countries between 2000 and 2015.

Results
Philanthropic contributions more than doubled over 16 years, accounting for one-third (US$364.1 million) of total DAMH 2000–2015. However, across health conditions, mental disorders received the lowest amount of philanthropic development assistance for health (0.5%). Thirty-seven of 156 LMICs received no philanthropic DAMH between 2000 and 2015 and just three LMICs (Antigua and Barbuda, Grenada, Saint Vincent and the Grenadines) received more than US$1 philanthropic DAMH per capita over the entire period. Eighty-one percent of philanthropic DAMH was disbursed to unspecified locations.

Conclusions
Philanthropic donors are potentially playing a critical role in DAMH, and the paper identifies challenges and opportunities for increasing their impact in sustainable financing for mental health.
Use of whole-genome sequencing to detect an outbreak of Malassezia pachydermatis infection and colonization in a neonatal intensive care unit—California, 2015–2016
Authors: Chow Nancy A. , Chinn Raymond , Pong Alice , Schultz Kerry , Kim Janice , Gade Lalitha , Jackson Brendan R. , Beer Karlyn D. , Litvintseva Anastasia P. 
Published: May 2020

AbstractWhole-genome sequencing confirmed the presence of a Malassezia pachydermatis outbreak among neonates in a neonatal intensive care unit. This technology supports the importance of adhering to infection prevention measures.
Site-specific fertilizer nitrogen management in Bt cotton using chlorophyll meter
Authors: Shankar Arun , Gupta R. K. , Bijay-Singh  
Published: May 2020

AbstractField experiments were conducted to standardize protocols for site-specific fertilizer nitrogen (N) management in Bt cotton using Soil Plant Analysis Development (SPAD) chlorophyll meter. Performance of different SPAD-based site-specific N management scenarios was evaluated vis-à-vis blanket fertilizer N recommendation. The N treatments comprised a no-N (control), four fixed-time and fixed N doses (60, 90, 120, and 150 kg N ha-1) including the recommended dose (150 kg ha-1), and eight fixed-time and adjustable N doses based on critical SPAD readings of 45 and 41 at first flowering and boll formation stages, respectively. The results revealed that by applying 45 or 60 kg N ha-1 at thinning stage of the crop and critical SPAD value-guided dose of 45 or 30 kg N ha-1 at first flowering stage resulted in yields similar to that recorded by applying the recommended dose of 150 kg N ha-1. However, significantly higher N use efficiency as well as 30–40% less total fertilizer N use was recorded with site-specific N management. Applying 30 kg N ha-1 at thinning and SPAD meter-guided 45 kg N ha-1 at first flowering were not enough and required additional SPAD meter-guided 45 kg N ha-1 at boll formation for sustaining yield levels equivalent to those observed by following blanket recommendation but resulted in 20% less fertilizer N application. Our data revealed that SPAD meter-based site-specific N management in Bt cotton results in optimum yield with dynamic adjustment of fertilizer N doses at first flowering and boll formation stages. The total amount of N fertilizer following site-specific management strategies was substantially less than the blanket recommendation of 150 kg N ha-1, but the extent may vary in different fields.
Mapping QTLs for protein and oil content in soybean by removing the influence of related traits in a four-way recombinant inbred line population
Authors: Li Xiyu , Xue Hong , Zhang Kaixin , Li Wenbin , Fang Yanlong , Qi Zhongying , Wang Yue , Tian Xiaocui , Song Jie , Li Wenxia , Ning Hailong 
Published: May 2020

AbstractProtein content (PC) and oil content (OC) are important breeding traits of soybean [Glycine max(L.) Merr.]. Quantitative trait locus (QTL) mapping for PC and OC is important for molecular breeding in soybean; however, the negative correlation between PC and OC influences the accuracy of QTL mapping. In the current study, a four-way recombinant inbred lines (FW-RILs) population comprising 160 lines derived from the cross (Kenfeng14 × Kenfeng15) × (Heinong48 × Kenfeng19) was planted in eight different environments and PC and OC measured. Conditional and unconditional QTL analyses were carried out by interval mapping (IM) and inclusive complete IM based on linkage maps of 275 simple sequences repeat markers in a FW-RILs population. This analysis revealed 59 unconditional QTLs and 52 conditional QTLs among the FW-RILs. An analysis of additive effects indicated that the effects of 13 protein QTLs were not related to OC, whereas OC affected the expression of 13 and eight QTLs either partially or completely, respectively. Eight QTLs affecting OC were not influenced by PC, whereas six and 26 QTLs were partially and fully affected by PC, respectively. Among the QTLs detected in the current study, two protein QTLs and five oil QTLs had not been previously reported. These findings will facilitate marker-assisted selection and molecular breeding of soybean.
Conquering Switzerland: the emergence of Angiostrongylus vasorum in foxes over three decades and its rapid regional increase in prevalence contrast with the stable occurrence of lungworms
Authors: Gillis-Germitsch Nina , Tritten Lucienne , Hegglin Daniel , Deplazes Peter , Schnyder Manuela 
Published: May 2020

AbstractAngiostrongylus vasorum, Crenosoma vulpis and Capillaria aerophila are the most common lungworms of domestic and wild canids. We investigated the short- and long-term lungworm prevalence changes in the Swiss fox population with a focus on A. vasorum. Between 2012 and 2017, lungs and hearts of 533 foxes from north-eastern Switzerland were necropsied and blood samples tested for circulating A. vasorum antigen. Angiostrongylus vasorum prevalence increased steadily from 21.5% in 2012 to 81.8% in 2017. In contrast, C. aerophila and C. vulpis prevalences fluctuated between 41.8 and 74.7%, and 3.6 and 14.9%, respectively. Based on 3955 blood samples collected between 1986 and 2017 from three geographic areas and during four time periods, antigen seropositivity increased from 2.4 to 62.0%. In north-eastern Switzerland, seropositivity was initially low (1.9 and 1.7% in the first two time periods) but increased in the following two decades to 22.2 and 62.0%, respectively. Our findings depict the spectacular expansion of A. vasorum in the past three decades. Regionally, the prevalence in foxes increased 4-fold within 6 years in some regions. This underpins the important role of foxes as reservoir hosts, likely explaining the increasing number of cases of canine angiostrongylosis in Switzerland. Our findings are representative of central Europe and may help anticipating future developments in areas where A. vasorum is present but (still) infrequent.
td-deletion in British English: New evidence for the long-lost morphological effect
Authors: Baranowski Maciej , Turton Danielle 
Published: May 2020

ABSTRACTThis paper analyzes td-deletion, the process whereby coronal stops /t, d/ are deleted after a consonant at the end of the word (e.g., best, kept, missed) in the speech of 93 speakers from Manchester, stratified for age, social class, gender, and ethnicity. Prior studies of British English have not found the morphological effect—more deletion in monomorphemic mist than past tense missed—commonly observed in American English. We find this effect in Manchester and provide evidence that the rise of glottal stop replacement in postsonorant position in British English (e.g., halt, aunt) may be responsible for the reduction in the strength of this effect in British varieties. Glottaling blocks deletion, and, because the vast majority of postsonorant tokens are monomorphemic, the higher rates of monomorpheme glottaling dampens the typical effect of deletion in this context. These findings indicate organization at a higher level of the grammar, while also showing overlaid effects of factors such as style and word frequency.
Sea‐Ice Induced Southern Ocean Subsurface Warming and Surface Cooling in a Warming Climate
Authors: Haumann F. Alexander , Gruber Nicolas , Münnich Matthias 
Published: May 2020

AbstractMuch of the Southern Ocean surface south of 55° S cooled and freshened between at least the early 1980s and the early 2010s. Many processes have been proposed to explain the unexpected cooling, including increased winds or freshwater fluxes. However, these mechanisms so far failed to fully explain the surface trends and the concurrent subsurface warming (100 to 500 m). Here, we argue that these trends are predominantly caused by an increased wind‐driven northward sea‐ice transport, enhancing the extraction of freshwater near Antarctica and releasing it in the open ocean. This conclusion is based on factorial experiments with a regional ocean model. In all experiments with an enhanced northward sea‐ice transport, a strengthened salinity‐dominated stratification cools the open‐ocean surface waters between the Subantarctic Front and the sea‐ice edge. The strengthened stratification reduces the downward mixing of cold surface water and the upward heat loss of the warmer waters below, thus warming the subsurface. This sea‐ice induced subsurface warming mostly occurs around West Antarctica, where it likely enhances ice‐shelf melting. Moreover, the subsurface warming could account for about 8 ± 2% of the global ocean heat content increase between 1982 and 2011. Antarctic sea‐ice changes thereby may have contributed to the slowdown of global surface warming over this period. Our conclusions are robust across all considered sensitivity cases, although the trend magnitude is sensitive to forcing uncertainties and the model's mean state. It remains unclear whether these sea‐ice induced changes are associated with natural variability or reflect a response to anthropogenic forcing.
Characterization of Bacteria on Aerosols From Dust Events in Dakar, Senegal, West Africa
Authors: Marone Alioune , Kane Coumba Touré , Mbengue Malick , Jenkins Gregory S. , Niang Demba Ndao , Drame Mamadou Simina , Gernand Jeremy M. 
Published: May 2020

AbstractWe identify bacteria types on collected dust samples in Dakar Senegal, a region that experiences frequent Saharan dust events. We use classical techniques to identify bacteria types from dust samples. Seventy‐seven bacteria types are identified from samples collected by spatula and the QuickTake® 30 air sampling pump. The dominant groups in the first batch of 51 bacteria (collected via deposition) are Micrococcus (33.33%), Bacillus (13.73%), Kytococcus (11.76%), Pseudomonas (9.80%), and Burkholderia (7.84%) and dominants in the second batch of 26 bacteria (collected with aerosol sampling vacuum pump): Pseudomonas (38.61%), Burkholderia (26.92%), Micrococcus (11.54%), and Brucella spp (7.69%). These bacteria are found in earlier studies from desert sources and can potentially cause respiratory diseases to exposed populations. Future work will use molecular methods is necessary to search for additional pathogens, including viruses on dust aerosols.
The Effect of F‐Layer Zonal Neutral Wind on the Monthly and Longitudinal Variability of Equatorial Ionosphere Irregularity and Drift Velocity
Authors: Nigussie Melessew , Moldwin Mark B. , Radicella Sandro , Yizengaw Endawoke , Zou Shasha , Nava Bruno 
Published: May 2020

AbstractThe effect of eastward zonal wind speed (EZWS) on vertical drift velocity (E × Bdrift) that mainly controls the equatorial ionospheric irregularities has been explained theoretically and through numerical models. However, its effect on the seasonal and longitudinal variations of E × B and the accompanying irregularities has not yet been investigated experimentally due to lack of F‐layer wind speed measurements. Observations of EZWS from GOCE and ion density and E × B from C/NOFS satellites for years 2011 and 2012 during quite times are used in this study. Monthly and longitudinal variations of the irregularity occurrence, E × B, and EZWS show similar patterns. We find that at most 50.85% of longitudinal variations of E × B can be explained by the longitudinal variability of EZWS only. When the EZWS exceeds 150 m/s, the longitudinal variation of EZWS, geomagnetic field strength, and Pedersen conductivity explain 56.40–69.20% of the longitudinal variation of E × B. In Atlantic, Africa, and Indian sectors, from 42.63% to 79.80% of the monthly variations of the E × B can be explained by the monthly variations of EZWS only. It is found also that EZWS and E × B may be linearly correlated during fall equinox and December solstice. The peak occurrence of irregularity in the Atlantic sector during November and December is due to the combined effect of large wind speed, solar terminator‐geomagnetic field alignment, and small geomagnetic field strength and Pedersen conductivity. Moreover, during June solstices, small EZWS corresponds to vertically downward E × B, which suggests that other factors dominate the E × B drift rather than the EZWS during these periods.
Subducted Lithospheric Boundary Tomographically Imaged Beneath Arc‐Continent Collision in Eastern Indonesia
Authors: Harris Cooper W. , Miller Meghan S. , Supendi Pepen , Widiyantoro Sri 
Published: May 2020

AbstractWe use traveltimes from a temporary seismic deployment of 30 broadband seismometers and a national catalog of arrival times to construct a finite‐frequency teleseismic P‐wave tomographic model of the upper mantle beneath eastern Indonesia, where subduction of the Indo‐Australian plate beneath the Banda Arc transitions to arc‐continent collision. The change in tectonics is due to a change from oceanic to continental lithosphere in the lower plate as inferred from geological mapping and geophysical, geochemical, and geodetic measurements. At this inferred transition, we seismically image the subducted continent‐ocean boundary at upper mantle depths that links volcanism on Flores to amagmatic orogenesis on Timor. Our tomographic images reveal a relatively high‐velocity feature within the upper mantle, which we interpret as the subducted Indo‐Australian slab. The slab appears continuous yet deformed as a result of the change in buoyancy due to the composition of the incoming continental lithosphere. Accordingly, there is a difference in dip angle between the oceanic and continental sections of the slab albeit not a gap or discontinuity. We suggest the slab has deformed without tearing to accommodate structural and kinematic changes across the continent‐ocean boundary as the two sections of the slab diverge. These results suggest that deformation in tectonic collisions can be localized along a continent‐ocean boundary, even at depth. We propose that future slab tearing may develop where we observe slab deformation in our study region and that a similar process may take place in collisions generally.
How Much Will Soil Warm?
Authors: Phillips Claire L. 
Published: May 2020

AbstractFor years, carbon cycle scientists have sought to understand how a warming climate will impact the decay of soil carbon. However, there have been relatively few investigations of how soils will warm in comparison to the atmosphere. Three recent papers in American Geophysical Union journals have looked at expected soil warming by synthesizing predictions in the Climate Model Intercomparison Project 5 (CMIP5). Collectively, these papers show that soil warming will keep pace with air warming except where snow and ice occur, and that the magnitude of soil warming in northern latitudes is uncertain due to model variability in snow and ice extent. They also show that a considerable portion of anthropogenic warming is being stored in deep soils, and that in comparison to observations, soil heat storage is underrepresented by land models. These studies highlight how important continued investigations of soil climatology are to understanding carbon cycling and Earth energy balance.
Functional biology of the Steel syndrome founder allele and evidence for clan genomics derivation of COL27A1 pathogenic alleles worldwide
Authors:   Baylor-Hopkins Center for Mendelian Genetics, Regeneron Genetics Center, Gonzaga-Jauregui Claudia , Yesil Gozde , Nistala Harikiran , Gezdirici Alper , Bayram Yavuz , Nannuru Kalyan C. , Pehlivan Davut , Yuan Bo , Jimenez Johanna , Sahin Yavuz , Paine Ingrid S. , Akdemir Zeynep Coban , Rajamani Saathyaki , Staples Jeffrey , Dronzek John , Howell Kristen , Fatih Jawid M. , Smaldone Silvia , Schlesinger Alan E. , Ramírez Norman , Cornier Alberto S. , Kelly Melissa A. , Haber Robert , Chim Shek Man , Nieman Kristy , Wu Nan , Walls Johnathon , Poueymirou William , Siao Chia-Jen , Sutton V. Reid , Williams Marc S. , Posey Jennifer E. , Gibbs Richard A. , Carlo Simon , Tegay David H. , Economides Aris N. , Lupski James R. 
Published: May 2020

AbstractPreviously we reported the identification of a homozygous COL27A1 (c.2089G>C; p.Gly697Arg) missense variant and proposed it as a founder allele in Puerto Rico segregating with Steel syndrome (STLS, MIM #615155); a rare osteochondrodysplasia characterized by short stature, congenital bilateral hip dysplasia, carpal coalitions, and scoliosis. We now report segregation of this variant in five probands from the initial clinical report defining the syndrome and an additional family of Puerto Rican descent with multiple affected adult individuals. We modeled the orthologous variant in murine Col27a1 and found it recapitulates some of the major Steel syndrome associated skeletal features including reduced body length, scoliosis, and a more rounded skull shape. Characterization of the in vivo murine model shows abnormal collagen deposition in the extracellular matrix and disorganization of the proliferative zone of the growth plate. We report additional COL27A1 pathogenic variant alleles identified in unrelated consanguineous Turkish kindreds suggesting Clan Genomics and identity-by-descent homozygosity contributing to disease in this population. The hypothesis that carrier states for this autosomal recessive osteochondrodysplasia may contribute to common complex traits is further explored in a large clinical population cohort. Our findings augment our understanding of COL27A1 biology and its role in skeletal development; and expand the functional allelic architecture in this gene underlying both rare and common disease phenotypes.
Semiconductor to metal transition in two-dimensional gold and its van der Waals heterostack with graphene
Authors: Forti Stiven , Link Stefan , Stöhr Alexander , Niu Yuran , Zakharov Alexei A. , Coletti Camilla , Starke Ulrich 
Published: May 2020

AbstractThe synthesis of two-dimensional (2D) transition metals has attracted growing attention for both fundamental and application-oriented investigations, such as 2D magnetism, nanoplasmonics and non-linear optics. However, the large-area synthesis of this class of materials in a single-layer form poses non-trivial difficulties. Here we present the synthesis of a large-area 2D gold layer, stabilized in between silicon carbide and monolayer graphene. We show that the 2D-Au ML is a semiconductor with the valence band maximum 50 meV below the Fermi level. The graphene and gold layers are largely non-interacting, thereby defining a class of van der Waals heterostructure. The 2D-Au bands, exhibit a 225 meV spin-orbit splitting along the $$\overline {{\mathrm{\Gamma }}{\mathrm{K}}}$$ΓK¯ direction, making it appealing for spin-related applications. By tuning the amount of gold at the SiC/graphene interface, we induce a semiconductor to metal transition in the 2D-Au, which has not yet been observed and hosts great interest for fundamental physics.