bluuebunny/crossref_metadata_2025_split huggingface dataset:
Resilient agri-food systems for nutrition amidst COVID-19: evidence and lessons from food-based approaches to overcome micronutrient deficiency and rebuild livelihoods after crises
Authors: Heck Simon , Campos Hugo , Barker Ian , Okello Julius J. , Baral Arun , Boy Erick , Brown Lynn , Birol Ekin 
Published: July 2020

AbstractCOVID-19 has had an instant effect on food systems in developing countries. Restrictions to the movement of people and goods have impaired access to markets, services and food. Unlike other concurrent crises, rather than threatening the material hardware of food systems, COVID-19 has so far affected the ‘software’ of food systems, highlighting again that connectivity is at the heart of these systems. Drops in demand, the loss of markets and employment and growing concerns about international cooperation are indications of possible deeper disruptions to come. Amidst this uncertainty, strategies to safeguard food and nutrition security of the world’s poor need to prioritize diversification of production and markets. Nutritious, biofortified crops such as potato, sweetpotato, but also wheat, maize and beans among others, can play a more significant role to provide key micronutrients (vitamin A, iron, zinc) at large scale. Strong local market chains, robust smallholder production systems and increasing commercial utilization make these crops powerful vehicles for securing nutrition when markets and mobility look uncertain. We posit that the evolving impacts of COVID-19 provide an opportunity to focus agricultural innovations, including the development and delivery of biofortified crops, on new and more specifically defined ‘jobs to be done’ throughout the food system. This will help bridge some of the current disruptions in supply and demand and will help prepare food systems for future crises.
Mindfulness and Romantic Relationship Outcomes: the Mediating Role of Conflict Resolution Styles and Closeness
Authors: Gesell Nathalie , Niklas Frank , Schmiedeler Sandra , Segerer Robin 
Published: July 2020

Abstract
Objectives
The association of mindfulness and romantic relationship outcomes such as partnership quality and satisfaction is well-established; however, the mechanisms of action are not yet clear. The current study tested conflict resolution styles and closeness as possible mediating factors. We hypothesized that trait mindfulness would increase the use of constructive conflict resolution styles (positive problem solving), decrease the use of destructive styles (conflict engagement, withdrawal, and compliance), and promote feelings of closeness between partners, which in turn would predict positive relationship outcomes (namely partnership quality, partnership satisfaction, and sexual satisfaction).

Methods
A total of 209 individuals (86% German, 76% female, mean age = 32 years) living in a relationship (31% married) participated in an online questionnaire.

Results
Mediation analyses revealed that positive problem solving mediated the association between mindfulness and partnership quality with b = .09 (95% CI = .03–.17), mindfulness and partnership satisfaction with b = .07 (95% CI = .02–.13), and mindfulness and sexual satisfaction with b = .04 (95% CI = .00–.10). Furthermore, a mediating role of withdrawal and closeness was shown for individual relationship outcomes.

Conclusions
Findings suggest that more positive problem solving, less withdrawal, and more closeness are mechanisms by which mindfulness is associated with positive relationship outcomes. The results of our study thus broaden our understanding of the processes that underlie fulfilling romantic relationships and, in turn, underline the positive effects of mindfulness.
Spatial Spread Sampling Using Weakly Associated Vectors
Authors: Jauslin Raphaël , Tillé Yves 
Published: July 2020

AbstractGeographical data are generally autocorrelated. In this case, it is preferable to select spread units. In this paper, we propose a new method for selecting well-spread samples from a finite spatial population with equal or unequal inclusion probabilities. The proposed method is based on the definition of a spatial structure by using a stratification matrix. Our method exactly satisfies given inclusion probabilities and provides samples that are very well spread. A set of simulations shows that our method outperforms other existing methods such as the generalized random tessellation stratified or the local pivotal method. Analysis of the variance on a real dataset shows that our method is more accurate than these two. Furthermore, a variance estimator is proposed.
Solid hulls and cores of classes of weighted entire functions defined in terms of associated weight functions
Authors: Schindl Gerhard 
Published: July 2020

AbstractIn the spirit of very recent articles by J. Bonet, W. Lusky and J. Taskinen we are studying the so-called solid hulls and cores of spaces of weighted entire functions when the weights are given in terms of associated weight functions coming from weight sequences. These sequences are required to satisfy certain (standard) growth and regularity properties which are frequently arising and used in the theory of ultradifferentiable and ultraholomorphic function classes (where also the associated weight function plays a prominent role). Thanks to this additional information we are able to see which growth behavior the so-called ”Lusky-numbers”, arising in the representations of the solid hulls and cores, have to satisfy resp. if such numbers can exist.
Left-ventricular outflow tract acceleration time is associated with symptoms in patients with obstructive hypertrophic cardiomyopathy
Authors: Huurman Roy , Michels Michelle , Bowen Daniel J. , van Slegtenhorst Marjon A. , Hirsch Alexander , Schinkel Arend F. L. 
Published: July 2020

Abstract
Aims
Not all obstructive hypertrophic cardiomyopathy (HCM) patients are symptomatic. The relation between obstructive HCM and symptoms is not well understood. The hypothesis of this study is that left-ventricular outflow tract (LVOT) acceleration time (AT) is associated with symptoms.

Methods
We included 187 patients (61% men, mean age 55 ± 14 years) with obstructive HCM, defined as a maximal wall thickness ≥ 15 mm and a resting or provoked LVOT peak gradient ≥ 30 mmHg. Peak velocity (PV), left-ventricular (LV) ejection time (ET), and AT (the time between LVOT flow onset and the moment of PV) were measured on continuous-wave (CW) Doppler tracings. Logistic and Cox proportional hazard regression analyses were used to evaluate the relation between symptoms [New York Heart Association (NYHA) class ≥ II] and echocardiographic measurements, including AT. Reproducibility was assessed using the intraclass correlation coefficient (ICC).

Results
Symptomatic patients were more often female and had higher mean AT values. Logistic regression demonstrated a significant association between AT and symptomatic status (odds ratio 1.31 per 10 ms, p < 0.01) after adjustment for sex, negative inotropes, PV, LVOT diameter, and diastolic dysfunction. AT was independently associated with symptoms and septal reduction during follow-up (hazard ratio 1.09 per 10 ms, p < 0.05). The ICC was 0.98 with a mean difference of 0.28 ± 8.4 ms.

Conclusion
In obstructive HCM patients, increased AT is significantly related to symptoms after adjustment for sex, negative inotropes, PV, LVOT diameter, and diastolic dysfunction, and is associated with the symptomatic status during follow-up. AT represents an easily measured echocardiographic variable with excellent inter-reader reproducibility.
A portable electrocardiogram for real-time monitoring of cardiac signals
Authors: Ehnesh Mahmoud , Abatis Panos , Schlindwein Fernando S. 
Published: July 2020

AbstractThis study presents an electrocardiogram (ECG) monitoring and processing system which can observe subjects in real time and display the resultant ECG signals on a computer for observation. The primary application is for the remote observation of cardiac patients. This paper aims to determine its reliability by analysing its portability and wireless connectivity. The system is comprised of three principal units, namely the data acquisition circuit, where cardiac electrical signals are detected using three surface electrodes placed at three different positions on the chest wall to follow the Einthoven Triangle. The signals measured are amplified and filtered by components in a circuit and are then carried to a data processing unit where a ATmega328P microcontroller with a ZigBee interface module are used to transfer the biosignal wirelessly to the Graphical User Interface (GUI) unit which has the capacity to observe ECG biosignals on a computer. The results demonstrated that the design successfully produced a distortion-free signal, namely the hardware and software elements operated and intercommunicated correctly. In both LabVIEW and MATLAB configurations, the GUI characteristics were examined and found to yield unproblematic, user-friendly displays in real-time. Thus, this research provides a novel ECG system design to effectively analyse cardiac patients, however, it would be useful to develop a tool that can differentiate the various forms of cardiac arrhythmia.
Effects of Near‐Surface Complexities on Differential Travel Times and Amplitude Ratios Between PP and Its Precursors
Authors: Zhou Y. , Chen X. , Yuen D. , Xu M. 
Published: July 2020

AbstractThe characteristics of mantle discontinuities at depths of 410 and 660 km are important to study the mantle dynamics. With the advantage of global samplings, the differential travel times and the amplitude ratios of PP and its precursors (PdP) have been extensively used to estimate the topography and the impedance contrast of mantle discontinuities. According to previous studies, effects of large‐scale structures on the PP phase cannot be neglected. Theoretically, the complex near‐surface structure, including ocean layer and crustal heterogeneity, may complicate the PP phase. It is necessary to assess the uncertainties of waveform by taking into account the near‐surface complexities. Through the usage of an efficient algorithm for constructing synthetic seismograms, the effects of near‐surface structure on the differential travel times and the amplitude ratios between the PP and PdP are explored. We demonstrate that the crustal structure mainly affects PP‐PdP differential travel time with minor effects on the amplitude, while the ocean depth governs PP/PdP amplitude ratio rather than the travel time. Through incorporating the crust model, the anomalies of PP‐PdP travel time and PdP/PP amplitude ratio are globally mapped. A clear continent‐ocean pattern was observed in the measurements of differential times and amplitude ratios. Moreover, time shift caused by the near‐surface complexities may be wrongly attributed to the topography of mantle discontinuity and our tests show that the offset could be up to 15 km, which should be taken into account in future PP precursor studies.
Key Components and Contrasts in the Nitrogen Budget Across a U.S.‐Canadian Transboundary Watershed
Authors: Lin Jiajia , Compton Jana E. , Clark Chris , Bittman Shabtai , Schwede Donna , Homann Peter S. , Kiffney Peter , Hooper David , Bahr Gary , Baron Jill S. 
Published: July 2020

AbstractWatershed nitrogen (N) budgets provide insights into drivers and solutions for groundwater and surface water N contamination. We constructed a comprehensive N budget for the transboundary Nooksack River Watershed (British Columbia, Canada, and Washington, USA) using locally derived data, national statistics, and standard parameters. Feed imports for dairy (mainly in the United States) and poultry (mainly in Canada) accounted for 30% and 29% of the total N input to the watershed, respectively. Synthetic fertilizer was the next largest source contributing 21% of inputs. Food imports for humans and pets together accounted for 9% of total inputs, lower than atmospheric deposition (10%). N imported by returning salmon representing marine‐derived nutrients accounted for <0.06% of total N input. Quantified N export was 80% of total N input, driven by ammonia emission (32% of exports). Animal product export was the second largest output of N (31%) as milk and cattle in the United States and poultry products in Canada. Riverine export of N was estimated at 28% of total N export. The commonly used crop nitrogen use efficiency (NUE) metric alone did not provide sufficient information on farming activities but in combination with other criteria such as farm‐gate NUE may better represent management efficiency. Agriculture was the primary driver of N inputs to the environment as a result of its regional importance; the N budget information can inform management to minimize N losses. The N budget provides key information for stakeholders across sectors and borders to create environmentally and economically viable and effective solutions.
Du Feu à l'Eau: Source and Flux of Dissolved Black Carbon From the Congo River
Authors: Drake Travis W. , Wagner Sasha , Stubbins Aron , Wabakanghanzi José N. , Dinga Jean Bienvenu , Six Johan , Spencer Robert G. M. 
Published: July 2020

AbstractPyrogenic organic residues from wildfires and anthropogenic combustion are ubiquitous in the environment and susceptible to leaching from soils into rivers, where they are known as dissolved black carbon (DBC). Here we quantified and isotopically characterized DBC from the second largest river on Earth, the Congo, using 12 samples collected across three annual hydrographs from 2010 to 2012. We find that the Congo River exports an average of 803 ± 84 Gg‐C as DBC per year, comprising 7.5% of the river's average annual dissolved organic carbon (DOC) flux (10.7 ± 1.2 Tg‐C yr−1). Concentrations of DBC were strongly correlated with discharge and DOC concentration, indicating transport limitation for DBC flux from the Congo River Basin. Stable carbon isotopic signatures of DBC revealed a seasonal shift in pyrogenic source from forest dominant to an increasing contribution from savannah biomass, which derives from the North‐South bimodal hydrologic regime within the basin. Our results also indicate that black carbon produced within the Congo Basin is exported by the river on relatively short time scales and that total DBC export will increase with climate change predictions for the central African region.
The Isotopic Composition of Silver in Ore Minerals
Authors: Arribas A. , Mathur R. , Megaw P. , Arribas I. 
Published: July 2020

AbstractThe study of the isotopic composition of Ag has applications to numerous fields, including earth and planetary sciences, the environment, and archeology. We present a comprehensive survey of the isotopic composition of Ag in ore deposits globally based on measurement of the 109Ag/107Ag values of 158 samples of native Ag and Ag‐bearing minerals from 65 deposits or districts representative of the main types of Ag mineralization in 20 countries on five continents. The narrow range of δ109Ag values (−0.4‰ to 0.4‰) observed for hypogene native Ag and acanthite/argentite (Ag2S) represents the isotopic composition of Ag in the hydrothermal fluids that are responsible for formation of hypogene (primary) Ag deposits worldwide. Our data provide evidence of mass dependent isotopic fractionation: (a) during low‐temperature remobilization of Ag associated with redox reactions in the supergene (weathering) environment, and (b) among Ag‐bearing mineral phases, including Ag‐halides (bromargyrite, chlorargyrite, iodargyrite, boleite, and pseudoboleite) and As‐bearing sulfosalts (e.g., enargite, tennantite, proustite, and polybasite). We find no evidence of fractionation or isotopic variation related to genetic environment of hypogene mineralization, formation age, or the host rock and geologic terrane of an ore deposit. The mean and range of δ109Ag values from different deposit types largely overlap, and the variation in Ag isotopic composition observed within a mineral district can be as large as that for the respective deposit type. Our initial results suggest limitations to a wider use of Ag isotopes as a geochemical tracer (e.g., in archeometry) and the need to conduct detailed, individual deposit/district studies.
Cold Plumes Initiated by Rayleigh‐Taylor Instabilities in Subduction Zones, and Their Characteristic Volcanic Distributions: The Role of Slab Dip
Authors: Ghosh Dip , Maiti Giridas , Mandal Nibir , Baruah Amiya 
Published: July 2020

AbstractDehydration melting in subduction zones often produces cold plumes, initiated by Rayleigh‐Taylor instabilities in the buoyant partially molten zones lying above the dipping subducting slabs. We use scaled laboratory experiments to demonstrate how the slab dip (α) can control the evolution of such plumes. For α > 0°, Rayleigh‐Taylor instabilities evolve as two orthogonal waves, one trench perpendicular with wavelength λL and the other one trench parallel with wavelength λT (λT > λL). We show that two competing processes, (1) λL‐controlled updip advection of partially molten materials and (2) λT/λL interference, determine the modes of plume growth. The λT/λL interference gives rise to an areal distribution of plumes (Mode 1), whereas advection leads to a linear distribution of plumes (Mode 2) at the upper fringe of the partially molten layer. The λT wave instabilities do not grow when α exceeds a threshold value (α* = 30°). For α > α*, λL‐driven advection takes the control to produce exclusively Mode 2 plumes. We performed a series of 2‐D and 3‐D computational fluid dynamics simulations to test the criticality of slab dip in switching the Mode 1 to Mode 2 transition at α*. We discuss the effects of viscosity ratio (R) and the density contrast (Δρ) between the source layers and ambient mantle, source layer thickness (Ts), and slab velocity (Us) on the development of cold plumes. Finally, we discuss the areal versus linear distributions of volcanoes from natural subduction zones as possible examples of Mode 1 versus Mode 2 plume products.
Improving the Understanding of CrIS Full Spectral Resolution Nonlocal Thermodynamic Equilibrium Radiances Using Spectral Correlation
Authors: Li Zhenglong , Menzel W. Paul , Jung James , Lim Agnes , Li Jun , Matricardi Marco , López‐Puertas Manuel , DeSouza‐Machado Sergio , Strow L. Larrabee 
Published: July 2020

AbstractIn recent years, significant progress has been made in fast radiative transfer model (RTM) simulation of daytime nonlocal thermodynamic equilibrium (NLTE) emission. However, NLTE remains as one important reason that prevents the hyperspectral shortwave infrared (SWIR) radiance observations from being assimilated into numerical weather prediction (NWP) models. To better understand the limitations of existing RTM‐based NLTE simulation, this study introduces a new statistical method, called Spectral Correlations to Estimate Non‐Local Thermal Equilibrium (SCENTE), to estimate the NLTE radiances in the Cross‐track Infrared Sounder (CrIS) SWIR radiance observations. SCENTE is applied to four typical season days, including spring equinox, summer solstice, fall equinox, and winter solstice. By analyzing calculation/background minus observation (BMO) of CrIS SWIR brightness temperature (BT), results show that SCENTE characterizes the NLTE well with standard deviation of differences (STD) comparable to observation noise for both daytime and nighttime, while the community RTM (CRTM) has substantially larger STD at night, mainly due to the lack of daytime NLTE just beyond the day/night terminator and the lack of aurora‐related NLTE. Detailed investigation of the biases of BMO shows that CRTM underestimates daytime SWIR NLTE effects by 0.76 K, while SCENTE overestimates SWIR NLTE effects by 0.70 K. The overestimation is because SCENTE uses CRTM‐simulated SWIR local thermodynamic equilibrium (LTE) radiances in the training, which is underestimated by 0.70 K in BT. SCENTE, complementary to RTM‐based simulations, can be used for quality control of SWIR radiances for assimilation and retrieval of atmospheric soundings.
Gaseous and Particulate Chlorine Emissions From Typical Iron and Steel Industry in China
Authors: Ding Xiang , Li Qing , Wu Di , Huo Yaoqiang , Liang Yingguang , Wang Hongli , Zhang Jie , Wang Shuxiao , Wang Tao , Ye Xingnan , Chen Jianmin 
Published: July 2020

AbstractThe accurate estimation of chlorine emissions is urgently needed to evaluate regional and global atmospheric chlorination. This study first reports on the gaseous/particulate phases of chlorine emissions from typical integrated steel industries, including the major manufacturing processes (i.e., sintering, ironmaking, and steelmaking) and self‐owned coal‐fired power plant (CFPP). The concentration of chlorine species emitted from the ironmaking/steelmaking processes and the self‐owned CFPP is very low (<1 mg/Nm3). Owing to the combustion of chlorine‐rich sinter raw materials, the sintering processes emitted unexpectedly high concentrations of chlorinated substances, including chlorinated very short‐lived CH3Cl, CH2Cl2, C2H5Cl, and C2H4Cl2. Flue gas desulfurization (FGD) systems equipped on the sintering processes can slightly reduce chlorinated hydrocarbons emissions (ClVOCs). However, the chlorine species bonded in filterable/condensable particulate states (ClFPM/ClCPM) can be removed by high efficient systems (with efficiencies of 64.8–94.1% for ClFPM and 97.3–98.5% for ClCPM), relying on employed FGD technology. Owing to rapid rate at which FGD systems have been installed in China, ClInorganic gases, ClCPM, and ClFPM emissions from the sintering and iron industry in 2016 were reduced by 75.3%, 82.7%, and 45.6%, respectively. Our results indicate that the current ultralow‐emission equipment facilitates the reduction in chlorine emissions from iron and steel industry, but subsequent retrofits should give greater consideration to the simultaneous removal of ClVOCs.
A New Lens for Evaluating Dynamic Controls on Shallow Convection
Authors: Bailey Adriana 
Published: July 2020

AbstractRising temperatures and changing dynamics can both moisten the air, making it difficult to disentangle these interrelated drivers of water cycle change. However, work by Camille Risi and colleagues presents a new way to distinguish their effects. Using large‐eddy simulations with water isotopic tracers, they show that while warming the sea surface increases the ratio of isotopically heavy‐to‐light water in the tropical marine subcloud layer, strengthening the moisture flux convergence decreases it. This divergent response provides a new framework for examining the complex mechanisms that regulate the development of convection and, ultimately, cloudiness—a target of the 2020 international field campaign EUREC4A (ElUcidating the RolE of Clouds‐Circulation Coupling in ClimAte). Moreover, their findings provide a clearer picture of why water isotopes recorded in tropical paleoproxies are a valuable lens through which to view changes in moisture transport in the past.