bluuebunny/crossref_metadata_2025_split huggingface dataset:
Responses of soil labile organic carbon and water-stable aggregates to reforestation in southern subtropical China
Authors: Chen Yuanqi , Zhang Yu , Yu Shiqin , Li Feng , Liu Suping , Zhou Lixia , Fu Shenglei 
Published: November 2020

Abstract

Aims
Reforestation can enhance soil carbon (C) stability and promote soil C accumulation. Experimental results are, however, highly variable, and the efficacy of reforestation in enhancing soil C stability is still in debate. Consequently, it remains unclear how the different soil C pools respond to reforestation in forest ecosystems.

Methods
The response of different soil C fractions to reforestation was examined in five subtropical forests, including the plantations of Eucalyptus urophylla (EU), Acacia crassicarpa (AC), Castanopsis hystrix (CH) and 10 species mixed (MX), and a naturally recovered shrubland (NS). Soil labile C fractions (readily oxidized organic C by KMnO4: ROC; dissolved organic C: DOC), distribution of aggregate-size classes and aggregate-associated C from different soil layers (0–10, 10–20, 20–40 and 40–60 cm) were evaluated.

Important Findings
We found that reforestation and forest type did not affect ROC concentration, yet the highest DOC concentration was detected in NS at four soil layers. Aggregate C concentration was the highest in all aggregate-size classes of CH at 0–10 cm depth. In addition, forest type did not alter the proportion of soil water-stable aggregates at four soil layers. However, soil depths significantly affected the distribution of soil aggregates with &gt;0.25 mm aggregates dominating in the topsoils (0–20 cm), but 0.053–2 mm aggregates being dominant in the deep soils (20–60 cm). These results indicate that reforestation and forest type affected soil DOC (0–60 cm) and aggregate C (0–10 cm). Furthermore, soil DOC and aggregate C were more susceptive to reforestation than ROC. The findings suggest that plantations reduce soil DOC concentration, highlighting that C leaching loss may decrease compared with natural recovery. Moreover, C. hystrix plantation may enhance soil C stability by physical protection in topsoil. This study provides valuable information on tree species selection for reforestation concerning soil C sequestration in southern subtropical China.
Mammalian herbivory in post-fire chaparral impacts herbaceous composition but not N and C cycling
Authors: Hendricks-Franco Lindsey , Stephens Scott L , Sousa Wayne P 
Published: November 2020

Abstract

Aims
Classical theory predicts that herbivores impact herb assemblages and soil nitrogen (N) cycling through selective plant consumption and the deposition of N-rich waste, with effects dependent upon ecosystem N availability. Herbivores are predicted to accelerate N cycling when N availability is high and decelerate cycling when availability is low. However, experimental tests of these theories in natural systems are limited and have yielded contradictory results. California’s widespread chaparral shrublands provide a tractable system in which to test these theories. They are prone to periodic crown fire, which temporarily removes living shrub cover, deposits mineral N on soils and allows diverse herbaceous assemblages to dominate the landscape for 3–5 years. Chaparral is also increasingly vulnerable to herbaceous invasion; mammalian herbivory may limit the establishment of non-native herbs in the shrub understory.

Methods
We implemented a 2-year herbivore-exclosure experiment (Hopland, CA) to assess the impact of mammalian herbivory during early post-fire chaparral succession, both on herbaceous plant assemblages and soil N and C cycling. We predicted that, in high-N post-fire conditions, mammalian herbivory would not demonstrate a strong preference for N-fixing herbs, would accelerate N cycling and would reduce the abundance of non-native herbs.

Important Findings
Excluding mammalian herbivores increased herb standing biomass by 54%, but changed neither the relative abundance of N-fixing vs. non-N-fixing herbs nor any measure of N or C cycling. Herbivore impacts on nutrient cycling may not be significant over the 2-year time scale of the experiment and physical effects of herbivore activity could have counteracted the influence of plant litter and animal dung/urine inputs. Mammalian herbivores concentrated their feeding on typical non-native herbs, slightly decreasing their relative abundance; however, mammalian herbivory was not sufficient to stem the invasion of chaparral by invasive herbs or alter C and N cycling over the first 2 years after fire.
Baloxavir Treatment in Adolescents With Acute Influenza: Subgroup Analysis From the CAPSTONE-1 Trial
Authors: Portsmouth Simon , Hayden Frederick G , Kawaguchi Keiko , Ishibashi Toru , Kinoshita Masahiro , Shishido Takao , Tsuchiya Kenji , Uehara Takeki 
Published: November 2020

Abstract

Background
Baloxavir marboxil has demonstrated safety and efficacy in treating adult and adolescent outpatients with acute influenza (CAPSTONE-1 trial). Here, we report a subgroup analysis of outcomes in adolescents from the trial.

Methods
CAPSTONE-1 was a randomized, double-blind, placebo-controlled study. Eligible adolescent outpatients (aged 12-17 years of age) were randomized in a ratio of 2:1 to a single dose of baloxavir 40/80 mg if less than/greater than or equal to 80 kg or placebo. The main outcomes were the time to alleviation of symptoms (TTAS), duration of infectious virus detection, and incidence of adverse events (AEs).

Results
Among 117 adolescent patients, 90 (77%) comprised the intent-to-treat infected population (63 baloxavir and 27 placebo; 88.9% A(H3N2)). The median TTAS was 38.6 hours shorter (95% confidence interval: −2.6, 68.4) in the baloxavir group compared with placebo (median TTAS, 54.1 hours vs 92.7 hours, P = .0055). The median time to sustained cessation of infectious virus detection was 72.0 hours for baloxavir compared with 120.0 hours for placebo recipients (P &lt; .0001). Treatment-emergent PA/I38X-substituted viruses were detected in 5 of the 51 (9.8%) baloxavir recipients. In the safety population (76 baloxavir and 41 placebo), AEs were less common in baloxavir than placebo recipients (17.1% vs 34.1%; P = .0421). In the baloxavir group, no AEs except for diarrhea were reported in 2 or more patients.

Conclusions
Baloxavir demonstrated clinical and virologic efficacy in the otherwise healthy adolescents with acute influenza compared with placebo. There were no safety concerns identified. These results were similar to the adult population in CAPSTONE-1 and support baloxavir as a treatment option in adolescents.
Pre-Coronavirus Disease 2019 Telehealth Practices Among Pediatric Infectious Diseases Specialists in the United States
Authors: Hakim Amin , Gaviria-Agudelo Claudia , Edwards Kathryn , Olson Daniel ,   PIDS Telehealth Working Group, Adler-Shohet Felice C , Arun Aparna , Bryant Kristina K , Edwards Kathryn , Fanella Sergio , Gaviria-Agudelo Claudia , Hakim Amin , Holzmann-Pazgal Galit , Kronman Matthew P , Olson Daniel , Russo Michael E , Sabella Camille , Sanderson Susan K , Seed Patrick C , Shehab Kareem , Siddiqui Javeed 
Published: November 2020

AbstractBackgroundTelehealth (TH) practices among pediatric infectious disease (PID) specialists prior to the coronavirus disease 2019 (COVID-19) pandemic are largely unknown.MethodsIn 2019, the Pediatric Infectious Diseases Society (PIDS) Telehealth Working Group surveyed PIDS members to collect data on the use of TH modalities, adoption barriers, interest, extent of curbside consultations (CCs), and reimbursement.ResultsOf 1213 PIDS members, 161 (13.3%) completed the survey, and the responses of 154 (12.7%) from the United States were included in our report. Medical school (63.6%) and hospital (44.8%) were the commonest work settings with 16.9% practicing in both of them. The most common TH modalities used were synchronous provider-patient virtual visits (20.8%) and synchronous provider-provider consultations (13.6%). TH services included outpatient consultations (48.1%), vaccine recommendations (43.5%), inpatient consultations (39.6%), and travel advice (39.6%). Barriers perceived by respondents included reimbursement (55.8%), lack of experience with TH (55.2%), lack of institutional support (52.6%), lack of administrative support (50%), and cost of implementation (48.7%). Most of the respondents (144, 93.5%) were interested in implementing a wide range of TH modalities. CCs accounted for 1–20 hours/week among 148 respondents.ConclusionsMost of the PIDS survey respondents reported low utilization of TH and several perceived barriers to TH adoption before the COVID-19 pandemic. Nonetheless, they expressed a strong interest in adopting different TH modalities. They also reported spending considerable time on non-reimbursed CCs from within and outside their institutions. The results of this survey provide baseline information that will allow comparisons with post-COVID-19 changes in the adoption of TH in PID.
The Politics of Return: Understanding Trajectories of Displacement and the Complex Dynamics of ‘Return’ in Central and East Africa
Authors: Macdonald Anna , Porter Holly 
Published: November 2020

AbstractBy 2019, a record high of 79.5 million people were forcibly displaced worldwide as a result of persecution, conflict, violence, and human rights violations (UNHCR 2020a: 2). In the decade leading up to this only a fraction of this number were able to ‘return’ or find a ‘durable solution’. Multiple waves of displacement are common, and ‘return’ often involves far more complicated arrangements than the term suggests. Yet if ‘return’, as a one-directional durable solution is increasingly rare, the need to understand it in difficult and dynamic contexts of precarity and multi-directional mobility, is all the more urgent. This introductory essay reflects on what studies of return can tell us about the ‘life cycle’ of conflict and displacement dynamics in war-affected Central and East Africa, with particular focus on Democratic Republic of Congo, South Sudan, and Uganda. ‘Return’ and the ‘returnee’ category is broad and includes former combatants, especially those involved in non-state armed groups. We survey the historical and conceptual background of ‘return’ and its growing prominence in international policy before introducing four areas in which the articles in this special issue contribute to our understanding of internally displaced person, refugee and combatant return dynamics: conceptualizations of home and mobilities; everyday negotiation of belonging; the relationship between return and ‘cycles of violence’; and finally, the ways in which return shapes and re-shapes governance and public authority across settings.
International Norms of Asylum and Burden-Sharing: A Case Study of Bangladesh and the Rohingya Refugee Population
Authors: Bhattacharya Srobana , Biswas Bidisha 
Published: November 2020

Abstract
Seven decades after the adoption of the 1951 United Nations Convention Relating to the Status of Refugees, how strong are the norms that the Convention was expected to institutionalize? We answer this question through the prism of the Rohingya refugee situation in Bangladesh. Using field research data and news analysis, we find that both the state of Bangladesh and the Rohingya refugees are caught up in a challenging situation. Even though Bangladesh has largely cooperated with the UN, upheld the principle of non-refoulement, and provided services to the refugees, the Rohingya continue to live displaced lives. Our article illuminates both the successes and the ongoing challenges that the global refugee regime faces. The Bangladesh-Rohingya case shows us that refugee norms have been widely accepted, but unevenly applied. Collective responsibility-sharing, which is a necessary pillar of an effective global refugee regime, is lacking. We conclude that international refugee regime is marked by responsibility-shifting, rather than responsibility-sharing.
Sampling on the Dependent Variable: An Achille's Heel of Research on Displacement?
Authors: Cole Georgia 
Published: November 2020

Abstract
Using Portes’ critique of research that ‘samples on the dependent variable’, this article identifies three particularly widespread and inter-related examples of this tendency within research on displacement, and particularly within the growing field of literature on refugee self-reliance. The first concerns the tendency to sample those in possession of particular labels; the second to sample those who inhabit specific spaces; and the third to sample those who exhibit certain forms of vulnerability. The article introduces the stories of displaced Eritreans in the Gulf States to show how these tendencies have resulted in particular sites and experiences of self-reliance being difficult to analyse, and thus systematically overlooked, within refugee studies. It concludes by arguing that categorical, spatial, and vulnerability biases within research on forced migrants can lead to a general confirmation bias that ends up inadvertently narrowing the meaning of key concepts and processes, and obscuring similar actions, including those with more positive outcomes, that may be occurring outside of established ‘host countries’ and under alternative labels.
‘Feeling at Home Away from Home?’ Social Participation of Refugee Students in Cyprus: A Mixed Methods Case Study Design
Authors: Trisokka Lambri , Gautsch Leslie , Mamas Christoforos 
Published: November 2020

Abstract
In the context of increasing numbers of refugee students being integrated into the national school system of host countries globally, the necessity of inclusive school environments for these students is growing. Yet schools may not be well prepared and supported to meet the unique needs of refugee students, who may struggle to adjust to their new reality. In this paper, we present the results of a mixed methods case study that explored aspects of the social participation experiences of three Syrian refugee siblings in a public elementary school in Cyprus, as a telling case for the struggles of refugee children to socially participate with their peers in asylum-country public schools. Social network and interview data were collected to examine how effectively the three refugee siblings participate in school life and the factors that may hinder their social participation. The findings are fairly worrisome, as the three refugee siblings were found to maintain a lower social participation status than their non-refugee peers.
Clustering dark energy imprints on cosmological observables of the gravitational field
Authors: Hassani Farbod , Adamek Julian , Kunz Martin 
Published: November 2020

ABSTRACT
We study cosmological observables on the past light-cone of a fixed observer in the context of clustering dark energy. We focus on observables that probe the gravitational field directly, namely the integrated Sachs–Wolfe and non-linear Rees–Sciama effect (ISW-RS), weak gravitational lensing, gravitational redshift, and Shapiro time delay. With our purpose-built N-body code ‘k-evolution’ that tracks the coupled evolution of dark matter particles and the dark energy field, we are able to study the regime of low speed of sound cs where dark energy perturbations can become quite large. Using ray tracing, we produce two-dimensional sky maps for each effect and we compute their angular power spectra. It turns out that the ISW-RS signal is the most promising probe to constrain clustering dark energy properties coded in $w-c_\mathrm{ s}^2$, as the linear clustering of dark energy would change the angular power spectrum by ${\sim}30{{\ \rm per\ cent}}$ at low ℓ when comparing two different speeds of sound for dark energy. Weak gravitational lensing, Shapiro time delay, and gravitational redshift are less sensitive probes of clustering dark energy, showing variations of only a few per cent. The effect of dark energy non-linearities in all the power spectra is negligible at low ℓ, but reaches about $2{{\ \rm per\ cent}}$ and $3{{\ \rm per\ cent}}$, respectively, in the convergence and ISW-RS angular power spectra at multipoles of a few hundred when observed at redshift ∼0.85. Future cosmological surveys achieving per cent precision measurements will allow us to probe the clustering of dark energy to a high degree of confidence.
Diffusive acceleration in relativistic shocks: particle feedback
Authors: Nagar Yotam , Keshet Uri 
Published: November 2020

ABSTRACT
The spectral index s of high-energy particles diffusively accelerated in a non-magnetized relativistic shock, such as in a γ-ray burst afterglow, depends on the unknown angular diffusion function $\mathcal {D}$, which itself depends on the particle distribution function f if acceleration is efficient. We develop a relaxation code to compute s and f for an arbitrary functional $\mathcal {D}$ that depends on f. A local $\mathcal {D}(f)$ dependence is motivated and shown, when rising (falling) upstream, to soften (harden) s with respect to the isotropic case, shift the angular distribution towards upstream (downstream) directions, and strengthen (weaken) the particle confinement to the shock; an opposite effect on s is found downstream. However, variations in s remain modest even when $\mathcal {D}$ is a strong function of f, so the standard, isotropic-diffusion results remain approximately applicable unless $\mathcal {D}$ is both highly anisotropic and not a local function of f. A mild, ∼0.1 softening of s, in both 2D and 3D, when $\mathcal {D}(f)$ rises sufficiently fast, may be realized in ab initio simulations.
The rotation rate of solar active and ephemeral regions – I. Dependence on morphology and peak magnetic flux
Authors: Kutsenko Alexander S 
Published: November 2020

ABSTRACT
Using magnetic field maps acquired by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory, we measured rotation rates of 864 active and 322 ephemeral regions observed between 2010 and 2016. We found smaller magnetic tracers to show a tendency to rotate faster as compared to larger ones. Thus, ephemeral regions exhibit on average the fastest rotation rate. We further divided active regions into three classes. Class A comprised magnetic bipoles obeying Hale’s polarity law, Joy’s law, and exhibiting more coherent leading polarity in comparison with the following one. The second class B included active regions violating at least one of the aforementioned empirical laws. The third class U comprised unipolar active regions. We found no significant difference between the rotation rates of active regions of classes A and B. In contrast, unipolar active regions exhibited on average lower rotation rate and narrower distribution of the rotation rate differences. Assuming the rotation rate to indicate the anchoring depth of the magnetic structure within the convection zone, we supposed that active regions of classes A and B might be anchored throughout the entire convective envelope while unipolar active regions a rooted within a thin layer located either near the base of the convection zone or at a shallow near-surface depth.
Type Ia supernovae from wide white dwarfs triples
Authors: Michaely Erez 
Published: November 2020

ABSTRACT
For ultra-wide systems (with outer orbit &gt;103  au) the galactic field is collisional. Hence, ultra-wide triple white dwarfs (TWDs) can be perturbed, by flyby stars, to sufficiently high outer eccentricity such that the triple becomes dynamically unstable. An unstable triple undergoes multiple binary–single resonant encounters between all three WDs. These encounters might result in a direct collision between any random two WDs and lead to a Type Ia supernova (SN Ia) event. In case where the multiple resonant encounters did not produce a collision a compact binary is formed (while the third WD is ejected), this binary either collides or merges via gravitational wave emission, similar to the classic double-degenerate (DD) channel. In this research study we estimate the galactic rates of SN Ia from the direct collision channel is to be $0.11\!-\!3.76{{\ \rm per\ cent}}$ and primarily $1\!-\!36{{\ \rm per\ cent}}$ from the DD scenario. The spread in the range is due to uncertainty in the underlying population and two types of galaxies, where elliptical galaxies host higher fraction. and primarily $2\!-\!36{{\ \rm per\ cent}}$ from the DD scenario.
Screening of Fabry disease in patients with chronic kidney disease in Japan
Authors: Nagata Akiko , Nasu Makoto , Kaida Yusuke , Nakayama Yosuke , Kurokawa Yuka , Nakamura Nao , Shibata Ryo , Hazama Takuma , Tsukimura Takahiro , Togawa Tadayasu , Saito Seiji , Sakuraba Hitoshi , Fukami Kei 
Published: November 2020

Abstract

Background
Fabry disease (FD), an X-linked lysosomal storage disorder caused by a deficiency in alfa-galactosidase A (α-Gal A) activity due to mutations in the GLA gene, has a prevalence of 0–1.69% in patients undergoing haemodialysis; however, its prevalence in patients with chronic kidney disease (CKD) Stages 1–5 is unknown.

Methods
Serum α-Gal A activity analysis and direct sequencing of GLA were used to screen for FD in 2122 male patients with CKD, including 1703 patients with CKD Stage 5D and 419 with CKD Stages 1–5. The correlation between serum α-Gal A activity and confounding factors in patients with CKD Stages 1–5 was evaluated.

Results
FD prevalence rates in patients with CKD Stage 5D and CKD Stages 1–5 were 0.06% (1/1703) and 0.48% (2/419), respectively. A patient with CKD Stage 5D exhibited a novel GLA mutation, p.Met208Arg, whereas two patients with CKD Stages 1–5 had c.370delG and p.Met296Ile. p. Met208Arg caused moderate structural changes in the molecular surface region near the substituted amino acid residue but did not affect the catalytic residues Asp170 and Asp231 in α-Gal A. Serum α-Gal A activity in patients with CKD Stages 1–5 was inversely correlated with age (P &lt; 0.0001) but directly correlated with estimated glomerular filtration rate (P &lt; 0.0001).

Conclusions
FD prevalence was much higher in male patients with CKD Stages 1–5 than in those with CKD Stage 5D. FD screening in patients with CKD Stages 1–5 may improve patient survival, decreasing the number of patients with CKD Stage 5D.
The changing nature of regional policy in Europe
Authors: Vanthillo Ties , Beckers Joris , Verhetsel Ann 
Published: November 2020

AbstractThis article charts the changing context of regional economic development and the advancement of both policy thinking and analysis on this issue. The shift away from ‘traditional’ regional policies, designed to bring about regional convergence, towards new approaches, designed to exploit the economic development potential of regions, is the focus of the article. Specific attention is paid to the emergence of regional development strategies in the process, where ‘regions’ may be defined functionally rather than administratively. We outline the elements of such strategies—including redefining objectives, new types of interventions, involvement of new actors, and the broadening and integration of regional interventions—which distinguish them from traditional policy and which will determine the degree of success achieved. In conclusion, the paper raises two points of interest, namely the need for more inclusive regional development processes and better implementation of these demanding strategies.