bluuebunny/crossref_metadata_2025 huggingface dataset:
Non-Association Conditions among Released Women: Implications for Successful Community Reintegration
Authors: McKendy Laura , Ricciardelli Rosemary
Published: April 2022

In addition to standard parole conditions, parolees under federal community supervision may be subject to special conditions as determined by the Parole Board of Canada; such conditions are intended to manage factors associated with criminogenic risk and need. One set of special conditions places restrictions on parolees’ social relationships and associations, which can include general restrictions (e.g., non-association with individuals involved in crime) or specific restrictions (e.g., no contact with one’s victim or co-accused). Drawing on case files of women under community supervision (n= 43), we explore how non-association and no contact orders shape community release experiences. We suggest that such conditions can have wide-reaching effects on women’s social lives and reintegration (e.g., in the areas of social support, employment, and housing), thereby, at times, complicating women’s attempts to construct post-institutional lives and identities. We consider how association conditions illustrate the broader tension between parole requirements and reintegration.
Public Support for Canadian Courts: Understanding the Roles of Institutional Trust and Partisanship
Authors: Crandall Erin , Lawlor Andrea
Published: April 2022

Public support is a critical component of any court’s institutional legitimacy. Understanding the roots and durability of such support is therefore crucial. This article uses survey data to explore public attitudes towards Canadian courts from 2008 to 2019. This time period is especially relevant given the comparatively tumultuous relationship between the Supreme Court and the Conservative government of Prime Minister Stephen Harper (2006–2015). Notably, partisanship now appears to be a defining characteristic of court support in Canada, with Conservative Party supporters being less likely to support the courts. While institutional trust is also found to be a strong predictor of court support, this suggests public attitudes towards Canadian courts may no longer be as well shielded from the effects of changing political circumstances as they once were.
Unbreaking Bail?: Post-Antic Trends in Bail Outcomes
Authors: Schumann Rachel , Yule Carolyn
Published: April 2022

Addressing criticism that bail blurs the line between prevention and punishment, the Supreme Court of Canada unanimously agreed “it is time to ensure that bail provisions are applied consistently and fairly” (R v Antic 2017 SCC 27, [2017] 1 SCR 509). Rather than reform bail, this decision simply reaffirmed the existing legal mandate: using the ladder principle, accused must be released with the fewest conditions necessary to prevent them from absconding, reoffending/interfering with the administration of justice, and/or bringing the criminal justice system into disrepute. We analyze 480 bail hearings in Ontario, Canada, that occurred pre- and post- the R v Antic decision. Our results reveal that justices are more attentive to the ladder principle post-Antic, such that more accused are released on their own recognizance than in the past. While post-Antic trends show a reduction in the use of certain behaviour-modifying conditions, bail supervision programs are used more frequently. We discuss the implications of these findings in light of Canada’s “broken bail system.”
Hydroelastic wave diffraction by a vertical circular cylinder standing in a channel with an ice cover
Authors: Yang Y.F. , Wu G.X. , Ren K.
Published: April 2022

The problem of hydroelastic wave diffraction by a surface-piercing vertical circular cylinder mounted on the bottom of an ice-covered channel is considered. The ice sheet is modelled as an elastic thin plate with homogeneous properties, while the linearized velocity potential theory is adopted to describe the motion of the fluid. The solution starts from the Green function satisfying all other boundary conditions apart from that on the body surface. This is obtained through applying a Fourier transform in the longitudinal direction of the channel and adopting an eigenfunction expansion in the vertical direction. The boundary conditions on the side walls and ice edges are imposed through an orthogonal product. Through the Green function, the velocity potential due to a surface-piercing structure with arbitrary shape can be expressed through a source distribution formula derived in this work, in which only integrals over the body surface and its interaction line with the ice sheet need to be retained. For a vertical circular cylinder, the unknown source distribution can be expanded further into a Fourier series in the circumferential direction, and then the analytical solution of the velocity potential can be obtained further. Extensive results and discussions are provided for the hydrodynamic forces and vertical shear forces on the cylinder, as well as the deflection and strain of the ice sheet. In particular, the behaviour of the solution near one of the natural frequencies of the channel is investigated in detail.
Variational methods for finding periodic orbits in the incompressible Navier–Stokes equations
Authors: Parker J.P. , Schneider T.M.
Published: April 2022

Unstable periodic orbits are believed to underpin the dynamics of turbulence, but by their nature are hard to find computationally. We present a family of methods to converge such unstable periodic orbits for the incompressible Navier–Stokes equations, based on variations of an integral objective functional, and using traditional gradient-based optimisation strategies. Different approaches for handling the incompressibility condition are considered. The variational methods are applied to the specific case of periodic, two-dimensional Kolmogorov flow and compared against existing Newton iteration-based shooting methods. While computationally slow, our methods converge from very inaccurate initial guesses.
Duplicate networks: the Berlin botanical institutions as a ‘clearing house’ for colonial plant material, 1891–1920
Authors: Kaiser Katja
Published: April 2022

For centuries, herbarium specimens were the focus of exchange in global botanical networks. The aim was the ‘complete’ registration of the flora, for which ‘complete’ collections in botanical institutions worldwide were considered to be a necessary basis, although this ardently sought-after ideal was never achieved. The study of colonial plants became a special priority of botanical research in the metropolises. With knowledge of the many treasures of the plant world considered the key to securing wealth and power, political and economic interests influenced both the organization and the subject matter of scientific research. After the German Reich began annexing colonies in the 1880s, legal regulations established Berlin's botanical institutions as the research centre on colonial flora. They also became a clearing house for plant material from overseas. Berlin-based curators selected duplicates of herbarium specimens from the German colonies, distributing them to other botanical institutions throughout Germany. More importantly, duplicates became a form of currency in trans-imperial networks, which relied on reciprocity. In exchange for duplicate German colonial herbarium specimens, the Berlin institutions received vast quantities of botanical samples from their British, Dutch, French and American counterparts.
Arai Ōsui and the Transnational Reimagination of Civilization in the Late Nineteenth-Century United States
Authors: Oka Chinami
Published: April 2022

Civilization discourse hierarchically ordered nation-states and people of different traits, including race and gender, in the Western modern concept of progress. This civilizational ideology of modern nation-states has underpinned narratives of many historical works, including transnational historical studies. This article showcases the ideas and practices of transnationalism that challenged such civilization discourse and pursued a more egalitarian and mutually interdependent vision of the world at the non-state level. This article does so by focusing on the Brotherhood of the New Life, a mixed-race religious agricultural community in late nineteenth-century rural America, and one of its Japanese members, Arai Ōsui, who joined the community after his defeat in Japan's Boshin Civil War. I argue that this non-state transnational perspective illuminates the Brotherhood members’ endeavour to free gender and race – the key conceptual underpinnings of the ideology of civilization – from this very discourse. This article further reveals, through Ōsui, that the community's egalitarian ethos developed to instigate new, anti-imperialist, and anti-hierarchical thoughts and actions in early twentieth-century Japan, in opposition to the state's imperialist endeavour to progress.
Olfactory impairment in patients with coronavirus disease 2019 self-perceived as asymptomatic
Authors: Zahedi F D , Husain S , Wan Hamizan A K , Tuang G J , Gendeh H S , Oui T J , Mustafa N , Kok H T
Published: April 2022

Background

Olfactory impairment may be present among patients with coronavirus disease 2019 self-perceived as asymptomatic. This study aimed to assess olfactory function among these individuals.

Methods

A cross-sectional study involving patients with coronavirus disease 2019 self-perceived as asymptomatic was conducted. Assessments included the subjective Malaysian Smell and Taste Questionnaire and the culturally adapted Malaysian version of the objective Sniffin’ Sticks Identification smell test.

Results

In 81 participants (mean age of 31.59 ± 12.04 years), with mean time from diagnosis to smell test of 7.47 ± 3.79 days, subjective assessment showed that 80.2 per cent were asymptomatic (questionnaire score of 6) and 19 per cent had mild symptoms (questionnaire score of 7 and 8). The mean objective smell test score was 10.89 ± 2.11. The prevalence of olfactory impairment was 76.6 per cent among patients with coronavirus disease 2019 self-perceived as asymptomatic. There was no association between the questionnaire and the smell test scores (p = 0.25). There was a correlation between the smell test score and the duration from diagnosis to smell test (p = 0.04).

Conclusion

The objective assessment demonstrated that coronavirus disease 2019 patients who perceived themselves as asymptomatic showed olfactory impairment.
Triggering tearing in a forming current sheet with the mirror instability
Authors: Winarto Himawan W. , Kunz Matthew W.
Published: April 2022

We study the time-dependent formation and evolution of a current sheet (CS) in a magnetised, collisionless, high-beta plasma using hybrid-kinetic particle-in-cell simulations. An initially tearing-stable Harris sheet is frozen into a persistently driven incompressible flow so that its characteristic thickness gradually decreases in time. As the CS thins, the strength of the reconnecting field increases, and adiabatic invariance in the inflowing fluid elements produces a field-biased pressure anisotropy with excess perpendicular pressure. At large plasma beta, this anisotropy excites the mirror instability, which deforms the reconnecting field on ion-Larmor scales and dramatically reduces the effective thickness of the CS. Tearing modes whose wavelengths are comparable to that of the mirrors then become unstable, triggering reconnection on smaller scales and at earlier times than would have occurred if the thinning CS were to have retained its Harris profile. A novel method for identifying and tracking X-points is introduced, yielding X-point separations that are initially intermediate between the perpendicular and parallel mirror wavelengths in the upstream plasma. These mirror-stimulated tearing modes ultimately grow and merge to produce island widths comparable to the CS thickness, an outcome we verify across a range of CS formation timescales and initial CS widths. Our results may find their most immediate application in the tearing disruption of magnetic folds generated by turbulent dynamo in weakly collisional, high-beta, astrophysical plasmas.
Attosecond dispersion as a diagnostics tool for solid-density laser-generated plasmas
Authors: Sundström Andréas , Pusztai István , Eng-Johnsson Per , Fülöp Tünde
Published: April 2022

Extreme-ultraviolet pulses can propagate through ionised solid-density targets, unlike optical pulses and, thus, have the potential to probe the interior of such plasmas on sub-femtosecond timescales. We present a synthetic diagnostic method for solid-density laser-generated plasmas based on the dispersion of an extreme-ultraviolet attosecond probe pulse, in a pump–probe scheme. We demonstrate the theoretical feasibility of this approach through calculating the dispersion of an extreme-ultraviolet probe pulse propagating through a laser-generated plasma. The plasma dynamics is calculated using a particle-in-cell simulation, whereas the dispersion of the probe is calculated with an external pseudo-spectral wave solver, allowing for high accuracy when calculating the dispersion. The application of this method is illustrated on thin-film plastic and aluminium targets irradiated by a high-intensity pump pulse. By comparing the dispersion of the probe pulse at different delays relative to the pump pulse, it is possible to follow the evolution of the plasma as it disintegrates. The high-frequency end of the dispersion provides information on the line-integrated electron density, whereas lower frequencies are more affected by the highest density encountered along the path of the probe. In addition, the presence of thin-film interference could be used to study the evolution of the plasma surface.
LEFKANDI PHASE I, WITH SPECIAL REFERENCE TO THE POTTERY, ITS CHRONOLOGICAL POSITION, AND ITS ANATOLIAN CONNECTIONS
Authors: French David , Dickinson Oliver
Published: April 2022

The aim of this article is to publish David French's manuscript on Lefkandi Phase I, in as close a form as possible to what he wrote. Some changes have been necessary to improve the presentation of the material, to correct occasional errors, and to conform withBSAstylistic requirements. The material discussed is essentially that from the lowest levels of the ‘Deep Sounding’ in Trench CC. The discussion has four sections. The first section is a very brief comment on the stratigraphical data, including sections of the Lefkandi Phase I stratum in Trench CC and plans of the remains of sub-phases. The second section is the core of the paper, a general account of the pottery, listing wares and shapes identifiable, which demonstrates that it contains a little material from periods certain or likely to be earlier than Phase I (Final Neolithic, Early Helladic I and Early Helladic II), also later strays, but essentially belongs to a range of wares that have clear West Anatolian links, although it cannot be linked exclusively with any individual Anatolian site or region. The third section lists the small finds from the stratum, with catalogue entries on the most significant, including a seal impression on a probable pithos rim fragment. Finally, the fourth section sums up views on the classification of the pottery, its chronological relationship with the Early Helladic sequence, its cultural relationship with West Anatolian material, and the question of how an essentially Anatolian style of pottery came to be locally produced in Euboea, with a range of references to comparable material from other Aegean sites.
Developmental language disorder in sequential bilinguals: Characterising word properties in spontaneous speech
Authors: NÍ CHÉILEACHAIR Fódhla , CHONDROGIANNI Vasiliki , SORACE Antonella , PARADIS Johanne , DE AGUIAR Vânia
Published: April 2022

The current study sought to investigate whether word properties can facilitate the identification of developmental language disorder (DLD) in sequential bilinguals by analyzing properties in nouns and verbs in L2 spontaneous speech as potential DLD markers. Measures of semantic (imageability, concreteness), lexical (frequency, age of acquisition) and phonological (phonological neighbourhood, word length) properties were computed for nouns and verbs produced by 15 sequential bilinguals (5;7) with DLD and 15 age-matched controls with diverse L1 backgrounds. Linear mixed modelling revealed a significant interaction of group and word category on phonological neighbourhood values but no differences across imageability, concreteness, frequency, age of acquisition, and word length measures in spontaneous speech. Outcomes suggest that group-level differences may not be apparent at the word-level, due to the heterogeneous nature of DLD and potential similarities in production during early L2 acquisition.
Real-Time Integration Center of Mass (riCOM) Reconstruction for 4D STEM
Authors: Yu Chu-Ping , Friedrich Thomas , Jannis Daen , Van Aert Sandra , Verbeeck Johan
Published: April 2022

A real-time image reconstruction method for scanning transmission electron microscopy (STEM) is proposed. With an algorithm requiring only the center of mass of the diffraction pattern at one probe position at a time, it is able to update the resulting image each time a new probe position is visited without storing any intermediate diffraction patterns. The results show clear features at high spatial frequency, such as atomic column positions. It is also demonstrated that some common post-processing methods, such as band-pass filtering, can be directly integrated in the real-time processing flow. Compared with other reconstruction methods, the proposed method produces high-quality reconstructions with good noise robustness at extremely low memory and computational requirements. An efficient, interactive open source implementation of the concept is further presented, which is compatible with frame-based, as well as event-based camera/file types. This method provides the attractive feature of immediate feedback that microscope operators have become used to, for example, conventional high-angle annular dark field STEM imaging, allowing for rapid decision-making and fine-tuning to obtain the best possible images for beam-sensitive samples at the lowest possible dose.
THREE-DIMENSIONAL ANALYTICAL SOLUTION OF THE ADVECTION-DIFFUSION EQUATION FOR AIR POLLUTION DISPERSION
Authors: FARHANE M. , ALEHYANE O. , SOUHAR O.
Published: April 2022

We develop a new analytical solution of a three-dimensional atmospheric pollutant dispersion. The main idea is to subdivide vertically the planetary boundary layer into sub-layers, where the wind speed and eddy diffusivity assume average values for each sub-layer. Basically, the model is assessed and validated using data obtained from the Copenhagen diffusion and Prairie Grass experiments. Our findings show that there is a good agreement between the predicted and observed crosswind-integrated concentrations. Moreover, the calculated statistical indices are within the range of acceptable model performance.
On the Symmetry of V2 in Yiddish and Some of Its Consequences for Extraction
Authors: Diesing Molly , Santorini Beatrice
Published: April 2022

This paper examines the distribution of V2 in Yiddish and its effects on extraction. Specifically, we show that both Spec-to-Spec antilocality (Erlewine 2020) and minimality (Rizzi 2006) constrainwh-extractions from embedded clauses in Yiddish. This explains the pattern ofthat-trace effects in Yiddish, as well as the apparent absence of an escape hatch in certain constructions.
Eastern Yiddish Relative Clauses in an Areal Perspective: An Analysis Based on the Language and Culture Atlas of Ashkenazic Jewry
Authors: Fleischer Jürg
Published: April 2022

Despite a vast literature on Yiddish relative clauses, their linguistic and geographical aspects have often been neglected. Based on data from the Language and Culture Atlas of Ashkenazic Jewry (JCAAJ), the areal distribution of subject and oblique relative clauses is analyzed for the first time. I show that vos ‘that; what’, which also introduces non-relative complement clauses, is the most common element to introduce subject relative clauses, whereas in oblique relative clauses, the pronoun velx- ‘which’ predominates. This contrast suggests a division of labor between nonpronominal and pronominal elements depending on the syntactic role of the relativized NP. As to the areal aspect, vos accompanied by a resumptive personal pronoun is primarily used in Central Eastern and Southeastern Yiddish, whereas nonrelative comple-mentizing vos is typical of Southeastern and central Northeastern Yiddish. These areal distributions mirror patterns of coterritorial Slavic languages: The more widespread use of nonrelative complementizing vos is reminiscent of the corresponding use of Ukrainian ščo and Belarusian što ‘what; that’, whereas the preference for resumptive personal pronouns is observed in Polish and Ukrainian. Comparatively recent convergence with Slavic seems to play a role in the emergence of resumptive pronouns and nonrelative complementizing vos in the varieties of Yiddish.*
Lower COVID‐19 Incidence in Low‐Continentality West‐Coast Areas of Europe
Authors: Ebert Karin , Houts Renate , Noce Sergio
Published: April 2022

In March 2020, the first known cases of COVID‐19 occurred in Europe. Subsequently, the pandemic developed a seasonal pattern. The incidence of COVID‐19 comprises spatial heterogeneity and seasonal variations, with lower and/or shorter peaks resulting in lower total incidence and higher and/or longer peaks resulting higher total incidence. The reason behind this phenomena is still unclear. Unraveling factors that explain why certain places have higher versus lower total COVID‐19 incidence can help health decision makers understand and plan for future waves of the pandemic. We test whether differences in the total incidence of COVID‐19 within five European countries (Norway, Sweden, Germany, Italy, and Spain), correlate with two environmental factors: the Köppen‐Geiger climate zones and the Continentality Index, while statistically controlling for crowding. Our results show that during the first 16 months of the pandemic (March 2020 to July 2021), climate zones with larger annual differences in temperature and annually distributed precipitation show a higher total incidence than climate zones with smaller differences in temperature and dry seasons. This coincides with lower continentality values. Total incidence increases with continentality, up to a Continentality Index value of 19, where a peak is reached in the semicontinental zone. Low continentality (high oceanic influence) appears to be a strong suppressing factor for COVID‐19 spread. The incidence in our study area is lowest at open low continentality west coast areas.
Implications of Receiver Plane Uncertainty for the Static Stress Triggering Hypothesis
Authors: Hanagan C. , Bennett R. A. , Chiaraluce L. , Hughes A. , Cocco M.
Published: April 2022

Static stress transfer from major earthquakes is commonly invoked as the primary mechanism for triggering aftershocks, but evaluating this mechanism depends on aftershock rupture plane orientations and hypocenter locations, which are often subject to significant observational uncertainty. We evaluate static stress change for an unusually large data set comprising hundreds to thousands of aftershocks following the 1997 Umbria‐Marche, 2009 L’Aquila (Italy), and 2019 Ridgecrest (California) earthquake sequences. We compare failure stress resolved on aftershock focal mechanism planes and planes that are optimally oriented (OOPs) in the regional and earthquake perturbed stress field. Like previous studies, we find that failure stress resolved on OOPs overpredicts the percentage (>70%) of triggered aftershocks relative to that predicted from observed aftershock rupture planes (∼50%–65%) from focal mechanisms solutions, independent of how nodal plane ambiguity is resolved. Further, observed aftershock nodal planes appear statistically different from OOPs. Observed rupture planes, at least for larger magnitude events (M > 3), appear to align more closely with pre‐existing tectonic structures. The inferred observational uncertainty associated with nodal plane ambiguity, plane orientation, and, to second order, hypocentral location yields a broad range of aftershocks potentially triggered by static stress changes, ranging from slightly better than random chance to nearly any aftershock promoted, particularly those further than 5 km from the causative fault. Dynamic stresses, afterslip, pore fluids, and other sources of unresolved small‐scale heterogeneity in the post‐mainshock stress field may also contribute appreciably to aftershock occurrence closer to the mainshock.
A Refinement of the Processes Controlling Dissolved Copper and Nickel Biogeochemistry: Insights From the Pan‐Arctic
Authors: Jensen Laramie T. , Cullen Jay T. , Jackson Sarah L. , Gerringa Loes J. A. , Bauch Dorothea , Middag Rob , Sherrell Robert M. , Fitzsimmons Jessica N.
Published: April 2022

Recent studies, including many from the GEOTRACES program, have expanded our knowledge of trace metals in the Arctic Ocean, an isolated ocean dominated by continental shelf and riverine inputs. Here, we report a unique, pan‐Arctic linear relationship between dissolved copper (Cu) and nickel (Ni) present north of 60°N that is absent in other oceans. The correlation is driven primarily by high Cu and Ni concentrations in the low salinity, river‐influenced surface Arctic and low, homogeneous concentrations in Arctic deep waters, opposing their typical global distributions. Rivers are a major source of both metals, which is most evident within the central Arctic's Transpolar Drift. Local decoupling of the linear Cu‐Ni relationship along the Chukchi Shelf and within the Canada Basin upper halocline reveals that Ni is additionally modified by biological cycling and shelf sediment processes, while Cu is mostly sourced from riverine inputs and influenced by mixing. This observation highlights differences in their chemistries: Cu is more prone to complexation with organic ligands, stabilizing its riverine source fluxes into the Arctic, while Ni is more labile and is dominated by biological processes. Within the Canadian Arctic Archipelago, an important source of Arctic water to the Atlantic Ocean, contributions of Cu and Ni from meteoric waters and the halocline are attenuated during transit to the Atlantic. Additionally, Cu and Ni in deep waters diminish with age due to isolation from surface sources, with higher concentrations in the younger Eastern Arctic basins and lower concentrations in the older Western Arctic basins.
An Observed Trend Between Mid‐Latitudes Km‐Scale Irregularities and Medium‐Scale Traveling Ionospheric Disturbances
Authors: Helmboldt J. F. , Zabotin N.
Published: April 2022

We describe observations of a trend between the level of km‐scale irregularity activity and the amplitudes of medium‐scale traveling ionospheric disturbances (MSTIDs) at mid‐latitudes using data from December 2019 through June 2021. These include measurements of both heigh‐specific and vertically integrated quantities. Region‐specific, bottom‐side measurements were made with the dynasonde system near Wallops Island (WI) and included phase structure function parameters related to km‐scale irregularities as well as height‐specific tilts/density gradients, which are especially sensitive to MSTIDs. A complementary data set was derived from the nearby Deployable Low‐band Ionosphere and Transient Experiment (DLITE) array in southern Maryland. The DLITE array was used to measure the vertically integrated irregularity index, CkL, via scintillometry of bright cosmic radio sources at 35 MHz. Transverse gradients in the line‐of‐sight total electron content (TEC) were also measured with DLITE using apparent shifts in the sources' sky positions. Relatively simple layer‐based models for the vertical distribution of km‐scale irregularities applied to dynasonde‐measured properties yielded results that correlated well with DLITE measurements of CkL. Similarly, spectral analysis showed that fluctuation amplitudes of vertically integrated bottom‐side density gradients derived from dynasonde data were well correlated with DLITE TEC gradient measurements. A significant trend was found between CkL and TEC gradient MSTID amplitudes among DLITE‐based data as well as among the extrapolated dynasonde measurements. Additionally, within the bottom‐side F‐region, irregularity levels were found to be well correlated with fluctuation amplitudes for the tilt as measured with the WI dynasonde.
Spruce Beetle Outbreak Increases Streamflow From Snow‐Dominated Basins in Southwest Colorado, USA
Authors: Manning Aidan L. , Harpold Adrian , Csank Adam
Published: April 2022

Bark beetles have impacted over 58 million acres of coniferous forest in the Western US since 2000. Most beetle impacted forests are in snow dominated, water limited headwater basins, which generate a disproportionate fraction of water supplies. Previous studies show mixed impacts of bark beetle outbreaks on streamflow with the potential to cause increased or decreased flows, but these studies either predate long‐term snowpack data, are model‐based, or examine only mountain pine beetle outbreaks. Ours is the first study to use an empirical, climate‐normalized paired catchment approach to quantify streamflow response to spruce beetle kill. Using 27 years of climate and streamflow observations from southwest Colorado, we show that in three of the six beetle impacted study basins, annual climate‐normalized streamflow increased by 22%–37% for at least three to 6 years after the beetle outbreak. Impacted basins exhibited no decreased flows and flows in unimpacted control basins remained unchanged. Among impacted basins, no single basin characteristic clearly explained variation of streamflow response. Higher runoff ratios during snowmelt contribute anywhere from 9% to 64% of streamflow increases, implying the importance of both snow and growing season processes in driving streamflow increases. These findings show variable, sometimes substantial streamflow increases in critical water supply basins following beetle kill in subalpine spruce forests, and contrast with evidence of unchanged or decreased streamflow following beetle kill in lower elevation pine forests in colder northern Colorado basins, highlighting the importance of climate and forest composition in refining hydrologic predictions following mountain forest disturbances.
Magma Lingers at Different Depths on the Basis of Its Water Content
Authors: Kornei Katherine
Published: April 2022

The discovery, gleaned from observations of volcanoes on four continents, could help constrain models of volcanic eruptions.
Lightning Had Difficulty Forming in Early Earth’s Atmosphere
Authors: Dzombak Rebecca
Published: April 2022

Lightning could have sparked the beginnings of life, but the primordial atmosphere might have made it more difficult for lightning to initiate.
Aftershock Moment Tensor Scattering
Authors: Wilding John D. , Ross Zachary E.
Published: April 2022

Coseismic rotations of principal stress axes can provide insights into the strength of the crust, but it is unclear how common this phenomenon is. We use a nearest‐neighbor clustering algorithm to identify earthquake sequences in the global ISC‐GEM catalog and the regional Southern California catalog. Using an inner‐product‐based pairwise measure of moment tensor similarity, we demonstrate that, in both catalogs, aftershocks are less similar to their respective mainshocks than foreshocks are. We interpret this effect, which we call moment tensor scattering, as evidence for widespread coseismic stress rotations. Moment tensor scattering is observable for a broad range of mainshock magnitudes in both catalogs. We further demonstrate that mainshock‐aftershock similarity recovers logarithmically to pre‐mainshock levels on decadal timescales. We conclude that moment tensor scattering is a generally observable feature of seismic sequences which may be useful in future work to discriminate between models of crustal strength.
The Effects of Solar Cycle Variability on Nanodust Dynamics in the Inner Heliosphere: Predictions for Future STEREO A/WAVES Measurements
Authors: Poppe A. R. , Lee C. O.
Published: April 2022

The collisional grinding of interplanetary meteoroids should continually produce grains over a wide range of sizes, including down to the nanometer‐size regime. Once generated, nanodust grains are subject to interplanetary electromagnetic forces from the solar wind due to their relatively large charge‐to‐mass ratios, resulting in complex and highly time‐dependent dynamics. Here, we use the coupled Wang‐Sheeley‐Arge solar corona and Enlil solar wind models together with a nanodust charging and dynamics model to explore the behavior and variability of nanodust dynamics in the inner heliosphere (<1 au) both within and across multiple solar cycles. In particular, we quantify the relative accessibility of these grains to 1 au across solar cycles 23 and 24, including focusing and defocusing heliospheric conditions. Finally, we qualitatively compare our model results with STEREO A (STA)/WAVES observations and identify correlations between the STA/WAVES single‐hit rate and the relative flux of >10 nm grains. Using solar cycle 23 as a proxy for the behavior of solar cycle 25, since both solar cycles share the same defocusing‐to‐focusing transition, we predict the relative flux of nanodust grains in the future and identify times at which nanodust impacts may reappear in the STA/WAVES data set. Continued analysis of future STA/WAVES observations will provide an important test of this prediction, either bolstering or weakening the interpretation of electromagnetically accelerated nanodust grains as the source of single‐hit events in the STA/WAVES Time Domain Sampler data set.
The Surface Deformation Signature of a Transcrustal, Crystal Mush‐Dominant Magma System
Authors: Mullet Benjamin , Segall Paul
Published: April 2022

The transcrustal, mush‐dominated magma storage paradigm, which posits liquid melt is heterogeneously distributed within a vertically extensive magma mush, differs significantly from classical geodetic models, where melt is stored within liquid‐dominant chambers within an elastic crust. Here, we present mechanical models consistent with transcrustal melt storage by separating the magmatic system into three domains: liquid melt lenses, surrounding crystal‐dominated poroelastic magma mush, and elastic crust. Our results indicate that pressure changes within the melt lens may induce surface displacements that approximate the displacements predicted by spheroidal pressure sources that mimic the geometry of the mush zone. Adopting constitutive parameters of the mush dependent on mush melt fraction, we show that a magma storage system will have an effective geometry inferred from surface displacements that smoothly transitions from the geometry of the melt lens to the geometry of the mush as mush melt fraction increases. This holds true across multiple storage zone geometries, including a “transcrustal” storage zone with a magma mush that extends deep in the crust. Accounting for the presence of a magma mush can lead to an increase in the estimated volume of injected or withdrawn magma (by several multiples) compared to values obtained using fully elastic models. Comparing erupted magma volumes to source volume changes allows for an estimation of magma compressibility; we show the presence of a mush can increase this estimated magma compressibility by up to approximately 50%, suggesting magmas may have higher bubble fraction than previous geodetically derived estimates.
Brain circuits for promoting homeostatic and non-homeostatic appetites
Authors: Ahn Benjamin Hyunju , Kim Minyoo , Kim Sung-Yon
Published: April 2022

As the principal means of acquiring nutrients, feeding behavior is indispensable to the survival and well-being of animals. In response to energy or nutrient deficits, animals seek and consume food to maintain energy homeostasis. On the other hand, even when animals are calorically replete, non-homeostatic factors, such as the sight, smell, and taste of palatable food, or environmental cues that predict food, can stimulate feeding behavior. These homeostatic and non-homeostatic factors have traditionally been investigated separately, but a growing body of literature highlights that these factors work synergistically to promote feeding behavior. Furthermore, recent breakthroughs in cell type-specific and circuit-specific labeling, recording, and manipulation techniques have markedly accelerated the discovery of well-defined neural populations underlying homeostatic and non-homeostatic appetite control, as well as overlapping circuits that contribute to both types of appetite. This review aims to provide an update on our understanding of the neural circuit mechanisms for promoting homeostatic and non-homeostatic appetites, focusing on the function of recently identified, genetically defined cell types.
Tracking SARS-CoV-2 Omicron diverse spike gene mutations identifies multiple inter-variant recombination events
Authors: Ou Junxian , Lan Wendong , Wu Xiaowei , Zhao Tie , Duan Biyan , Yang Peipei , Ren Yi , Quan Lulu , Zhao Wei , Seto Donald , Chodosh James , Luo Zhen , Wu Jianguo , Zhang Qiwei
Published: April 2022

The current pandemic of COVID-19 is fueled by more infectious emergent Omicron variants. Ongoing concerns of emergent variants include possible recombinants, as genome recombination is an important evolutionary mechanism for the emergence and re-emergence of human viral pathogens. In this study, we identified diverse recombination events between two Omicron major subvariants (BA.1 and BA.2) and other variants of concern (VOCs) and variants of interest (VOIs), suggesting that co-infection and subsequent genome recombination play important roles in the ongoing evolution of SARS-CoV-2. Through scanning high-quality completed Omicron spike gene sequences, 18 core mutations of BA.1 (frequency >99%) and 27 core mutations of BA.2 (nine more than BA.1) were identified, of which 15 are specific to Omicron. BA.1 subvariants share nine common amino acid mutations (three more than BA.2) in the spike protein with most VOCs, suggesting a possible recombination origin of Omicron from these VOCs. There are three more Alpha-related mutations in BA.1 than BA.2, and BA.1 is phylogenetically closer to Alpha than other variants. Revertant mutations are found in some dominant mutations (frequency >95%) in the BA.1. Most notably, multiple characteristic amino acid mutations in the Delta spike protein have been also identified in the “Deltacron”-like Omicron Variants isolated since November 11, 2021 in South Africa, which implies the recombination events occurring between the Omicron and Delta variants. Monitoring the evolving SARS-CoV-2 genomes especially for recombination is critically important for recognition of abrupt changes to viral attributes including its epitopes which may call for vaccine modifications.
Existing and emerging pharmacological approaches to the treatment of mania: A critical overview
Authors: Sparacino Giulio , Verdolini Norma , Vieta Eduard , Pacchiarotti Isabella
Published: April 2022

Manic episodes are a defining, frequent and dramatically disabling occurrence in the course of Bipolar Disorder type I. Current pharmacotherapy of mania lists a good number of agents, but differences in efficacy and safety profiles among these agents must be considered in order to tailor personalized therapies, especially when the long-term course of the illness is considered. There is wide room and need to ameliorate current pharmacological approaches to mania, but ongoing pharmacological research on the topic is scant. In this work we try to critically assess clinical factors and patients’ characteristics that may influence the treatment choice for manic episodes. In addition, we conduct a narrative review on experimental pharmacology of bipolar mania and psychotic disorders, presenting a critical overview on agents which could represent treatment alternatives for a manic episode in the next future. Results show limited novel or ongoing research on agents acting as mood stabilizers (Ebselen, Valnoctamide and Eslicarbazepine did not reach statistical significance in demonstrating antimanic efficacy). As for the emerging experimental antipsychotic, some of them (including KarXT, SEP-363856, RO6889450, ALKS3831) have demonstrated good antipsychotic efficacy and a favorable safety profile, but little is known about their use in patients with bipolar disorder and specifically designed trials are needed. Lastly, some benefits for the treatment of mania could be expected to come in the next future from non-mood stabilizers/non-antipsychotic agents (especially PKC inhibitors like Endoxifen): long-term trials are needed to confirm positive results in terms of long-term efficacy and safety.
Molecular mechanism of m6A methylation of circDLC1 mediated by RNA methyltransferase METTL3 in the malignant proliferation of glioma cells
Authors: Wu Quansheng , Yin Xiaofeng , Zhao Wenbo , Xu Wenli , Chen Laizhao
Published: April 2022

Glioma is an intracranial malignant tumor and remains largely incurable. Circular RNAs are prominent modulators in glioma progression. This study investigated the function of circular RNA DLC1 (circDLC1) in the malignant proliferation of glioma cells. circDLC1 expression in glioma tissues and cells was determined using RT-qPCR. The effect of circDLC1 on the malignant proliferation of glioma cells was analyzed using CCK-8, colony formation, and EdU staining assays. METTL3, miR-671-5p, and CTNNBIP1 expressions were determined. N6 methyladenosine (m6A) level of circDLC1 was analyzed using MeRIP. The binding relationship between miR-671-5p and circDLC1 or CTNNBIP1 was verified using RNA pull-down and dual-luciferase assays. A xenograft tumor model was established in nude mice to verify the effect of METTL3-mediated circDLC1 on glioma in vivo. circDLC1 was poorly expressed in glioma. circDLC1 overexpression suppressed glioma cell proliferation. Mechanically, METTL3-mediated m6A modification enhanced circDLC1 stability and upregulated circDLC1 expression in glioma. circDLC1 upregulated CTNNBIP1 transcription by competitively binding to miR-671-5p. METTL3 overexpression repressed the malignant proliferation of glioma via circDLC1/miR-671-5p/CTNNBIP1 in vivo. Collectively, METTL3-mediated m6A modification upregulated circDLC1 expression, and circDLC1 promoted CTNNBIP1 transcription by sponging miR-671-5p, thus repressing the malignant proliferation of glioma.
Accelerating materials discovery using artificial intelligence, high performance computing and robotics
Authors: Pyzer-Knapp Edward O. , Pitera Jed W. , Staar Peter W. J. , Takeda Seiji , Laino Teodoro , Sanders Daniel P. , Sexton James , Smith John R. , Curioni Alessandro
Published: April 2022

New tools enable new ways of working, and materials science is no exception. In materials discovery, traditional manual, serial, and human-intensive work is being augmented by automated, parallel, and iterative processes driven by Artificial Intelligence (AI), simulation and experimental automation. In this perspective, we describe how these new capabilities enable the acceleration and enrichment of each stage of the discovery cycle. We show, using the example of the development of a novel chemically amplified photoresist, how these technologies’ impacts are amplified when they are used in concert with each other as powerful, heterogeneous workflows.
A compilation of experimental data on the mechanical properties and microstructural features of Ti-alloys
Authors: Salvador Camilo A. F. , Maia Eloa L. , Costa Fernando H. , Escobar Julian D. , Oliveira João P.
Published: April 2022

The present work depicts a compilation of mechanical properties of 282 distinct multicomponent Ti-based alloys and their respective microstructural features. The dataset includes the chemical composition (in at.%), phase constituents, Young modulus, hardness, yield strength, ultimate strength, and elongation. Each entry is associated with a high-quality experimental work containing a complete description of the processing route and testing setup. Furthermore, we incorporated flags to the dataset indicating (a) the use of high-resolution techniques for microstructural analysis and (b) the observation of non-linear elastic responses during mechanical testing. Oxygen content and average grain size are presented whenever available. The selected features can help material scientists to adjust the data to their needs concerning materials selection and discovery. Most alloys in the dataset were produced via an ingot metallurgy route, followed by solubilization and water quench (≈58%), which is considered a standard condition for β-Ti alloys. The database is hosted and maintained up to date in an open platform. For completeness, a few graphical representations of the dataset are included.
A large Megaraptoridae (Theropoda: Coelurosauria) from Upper Cretaceous (Maastrichtian) of Patagonia, Argentina
Authors: Aranciaga Rolando Alexis M. , Motta Matias J. , Agnolín Federico L. , Manabe Makoto , Tsuihiji Takanobu , Novas Fernando E.
Published: April 2022

Megaraptora is a theropod clade known from former Gondwana landmasses and Asia. Most members of the clade are known from the Early to Late Cretaceous (Barremian–Santonian), with Maastrichtian megaraptorans known only from isolated and poorly informative remains. The aim of the present contribution is to describe a partial skeleton of a megaraptorid from Maastrichtian beds in Santa Cruz Province, Argentina. This new specimen is the most informative megaraptoran known from Maastrichtian age, and is herein described as a new taxon. Phylogenetic analysis nested the new taxon together with other South American megaraptorans in a monophyletic clade, whereas Australian and Asian members constitute successive stem groups. South American forms differ from more basal megaraptorans in several anatomical features and in being much larger and more robustly built.
Structural and functional differentiation between compressive and glaucomatous optic neuropathy
Authors: Laowanapiban Poramaet , Sathianvichitr Kanchalika , Chirapapaisan Niphon
Published: April 2022

Clinical diagnoses of slow, progressive, painless visual losses with various degrees of visual field (VF) losses and disc atrophy are often confused between suprasellar compressive optic neuropathy (CON) and open-angle glaucomatous optic neuropathy (GON). We plotted the thickness of the peripapillary retinal nerve fiber layer (RNFL) and macular ganglion cell-inner plexiform layer (GCIPL) against the mean deviation (MD) of the VF of 34 eyes of CON at diagnosis, 30 eyes of CON after therapy, 29 eyes of GON, and 60 eyes of healthy controls in a cross-sectional investigation. At diagnosis, a disproportionally early pattern of structural thinning compared with the corresponding VF losses was unique to CON. GON- and CON-specific thinning parameters were generally useful in differentiating GON and CON from moderate to severe MD losses, but early MD losses (0 to − 6 dB) overlapped with GON in a CON-stage specific manner. GON-specific thinning parameters, RNFL in the inferior sector, and inferior to temporal macular GCIPL ratio showed overlap with posttreatment CON in the early MD losses with AUCs of 0.916 (95% CI 0.860–0.971; P < 0.001) and 0.890 (95% CI 0.811–0.968; P < 0.001), respectively. In comparison, CON-specific thinning parameters, superonasal, and inferonasal GCIPL showed overlap with CON at diagnosis for early MD losses. Overall, the nasal-to-temporal macular GCIPL ratio showed good discrimination between CON and GON throughout the MD range, with an AUC of 0.923 (95% CI 0.870–0.976; P < 0.001). Comparing GON with all stages of CON, the cut-point of 0.95 showed the lower nasal-to-temporal GCIPL ratio had a sensitivity of 72% and specificity of 90% for CON. However, the cut-point of 1.10 showed the superior-to-inferior GCIPL ratio had a sensitivity of 60% and specificity of 98% for GON.