bluuebunny/crossref_metadata_2025_split huggingface dataset:
Work in progress: power in transformation to postcapitalist work relations in community–supported agriculture
Authors: Raj Guilherme , Feola Giuseppe , Runhaar Hens 
Published: July 2023

AbstractCommunity-supported agriculture (CSA) initiatives are spaces where diverse work relations are performed. From a postcapitalist perspective, these initiatives attempt to create alternative-capitalist and non-capitalist work relations next to capitalist ones. While analyses of work relations in CSA abound, it remains uncertain how such diversification is made possible and how it is shaped by the micro-politics of and power relations in these initiatives. This paper addresses this gap by analysing how power shapes transformations to postcapitalist work relations in CSA. It provides substantial empirical evidence of multiple manifestations of power enabling or constraining postcapitalist work relations through a comparative case study of three CSA initiatives in Portugal. Results show that while CSA creates postcapitalist work relations that are non-alienated, non-monetised and full of care, they insufficiently unmake unbalanced power relations established in capitalist work relations. This paper argues that, when establishing postcapitalist work relations, the selected CSA initiatives could benefit from actively deconstructing internal hierarchies, de-centralising decision-making power from farm owners and addressing oppressive power relations that are ossified in their local and cultural context.
Effects of letrozole on serum estradiol and estrone in postmenopausal breast cancer patients and tolerability of treatment: a prospective trial using a highly sensitive LC–MS/MS (liquid chromatography–tandem mass spectrometry) method for estrogen measurement
Authors: Faltinová Mária , Vehmanen Leena , Lyytinen Heli , Haanpää Mikko , Hämäläinen Esa , Tiitinen Aila , Blomqvist Carl , Mattson Johanna 
Published: July 2023

Abstract
Purpose
To analyze serum estradiol (E2) and estrone (E1) during letrozole treatment and their association to Quality of Life (QoL) and side-effects.

Methods
Postmenopausal breast cancer patients starting adjuvant letrozole were eligible. Serum samples were taken at baseline, three, and 12 months. E2 and FSH were measured with routine chemiluminescent immunoassays. E2 and E1 were analyzed after trial completion with a highly sensitive liquid chromatography-tandem mass spectrometry method (LC–MS/MS) with lower limits of quantification (LLOQ) of 5 pmol/L. QoL was measured at baseline and at 12 months with the EORTC QLQ-C30 and QLQ-BR23 and the Women’s Health questionnaires, and menopause-related symptoms with the modified Kupperman Index.

Results
Of 100 screened patients 90 completed the trial. Baseline mean LC–MS/MS E2 and E1 were 12 pmol/L (range < 5–57) and 66 pmol/L (< 5–226), respectively. E2 levels measured by immunoassay and LC–MS/MS showed no correlation. E2 and E1 were completely suppressed by letrozole except for one occasion (E1 11 pmol/L at 3 months). Pain, side effects of systemic therapy, vasomotor symptoms, joint and muscle aches, and vaginal dryness increased during letrozole treatment. A high baseline E2 was significantly associated with increased aching joints and muscles, but not with the other side effects.

Conclusions
Letrozole supresses E2 and E1 completely below the LLOQ of the LC–MS/MS in postmenopausal women. High pre-treatment E2 levels were associated with more joint and muscle pain during letrozole. Automated immunoassays are unsuitable for E2 monitoring during letrozole therapy due to poor sensitivity.
Travelling under pressure - hypoxia and shear stress in the metastatic journey
Authors: Ildiz Ece Su , Gvozdenovic Ana , Kovacs Werner J , Aceto Nicola 
Published: July 2023

AbstractCancer cell invasion, intravasation and survival in the bloodstream are early steps of the metastatic process, pivotal to enabling the spread of cancer to distant tissues. Circulating tumor cells (CTCs) represent a highly selected subpopulation of cancer cells that tamed these critical steps, and a better understanding of their biology and driving molecular principles may facilitate the development of novel tools to prevent metastasis. Here, we describe key research advances in this field, aiming at describing early metastasis-related processes such as collective invasion, shedding, and survival of CTCs in the bloodstream, paying particular attention to microenvironmental factors like hypoxia and mechanical stress, considered as important influencers of the metastatic journey.
Graphical abstract
XFVM modelling of fracture aperture induced by shear and tensile opening
Authors: Conti Giulia , Matthäi Stephan , Jenny Patrick 
Published: July 2023

AbstractIn reservoir simulation, it is important to understand the mechanical behaviour of fractured rocks and the effect of shear and tensile displacements of fractures on their aperture. Tensile opening directly enhances the fracture aperture, whereas shear of a preexisting rough-walled fracture creates aperture changes dependent on the local stress state. Since fracture dilatation increases reservoir permeability, both processes must be included in a realistic and consistent manner into the mechanical reservoir simulation model. Here, we use the extended finite volume method (XFVM) to conduct flow and geomechanics simulations. In XFVM, fractures are embedded in a poroelastic matrix and are modelled with discontinuous basis functions. On each fracture segment the tractions and compressive forces are calculated, and one extra degree of freedom is added for both the shear and tensile displacement. In this particular XFVM implementation we assume that linear elasticity and steady state fluid pressure adequately constrain the effective stress. In this paper, shear dilation is not calculated a posteriori, but it enters the equations such that aperture changes directly affect the stress state. This is accomplished by adding shear dilation to the displacement gradients and therefore ascertains a consistent representation in the stress-strain relations and force balances. We illustrate and discuss the influence of this extra term in two simple test cases and in a realistic layer-restricted two-dimensional fracture network subjected to plausible in situ stress and pore pressure conditions.
Mercury accumulation and biomarkers of exposure in two popular recreational fishes in Hawaiian waters
Authors: Holbert Stephanie Shaw , Bryan Colleen E. , Korsmeyer Keith E. , Jensen Brenda A. 
Published: July 2023

AbstractMercury (Hg) exposure has not been examined in many recreational nearshore fish species that are commonly consumed around the Hawaiian Islands. Specific gene transcripts, such as metallothionein (MET) and thioredoxin reductase (TrxR), can be used to examine Hg exposure responses in aquatic organisms. This study measured total mercury (THg) in four species from two groups of Hawaiian nearshore fishes: giant trevally (Caranx ignobilis, n = 13), bluefin trevally (C. melampygus, n = 4), sharp jaw bonefish (Albula virgata, n = 2), and round jaw bonefish (A. glossodonta, n = 19). Total Hg accumulation and abundance profiles of MET and TrxR were evaluated for muscle, liver, and kidney tissues. Total Hg in round jaw bonefish and giant trevally tissues accumulated with length and calculated age. In round jaw bonefish tissues, mean THg was greater in kidney (1156 ng/g wet mass (wm)) than liver (339 ng/g wm) and muscle (330 ng/g wm). Giant trevally muscle (187 ng/g wm) and liver (277 ng/g wm) mean THg did not differ significantly. Fish species in this study were compared to commercial and local fish species with state and federal muscle tissue consumption advisories based on THg benchmarks developed by the U.S. Food and Drug Administration (FDA) and Environmental Protection Agency (EPA). Both bonefishes had mean muscle THg that exceeded benchmarks suggesting consumption advisories should be considered. MET transcript in round jaw bonefish kidney tissue and kidney THg exhibited a marginally significant positive correlation, while TrxR transcript in liver tissue negatively correlated with increasing liver THg. These results contribute to our understanding of Hg exposure associated health effects in fish.
Characterization of patterns and variability in the dynamics of outdoor aquatic mesocosms: exploring the capabilities and challenges in data supporting aquatic system models
Authors: Loerracher Ann-Kathrin , Schmidt Jürgen , Ebke Peter , Schmolke Amelie , Abi-Akar Farah , Galic Nika , Ashauer Roman 
Published: July 2023

AbstractAquatic mesocosms are complex test systems used within regulatory risk assessment of plant protection products. These model ecosystems allow researchers to capture interactions of multiple species under realistic environmental conditions. They enable assessment of direct and indirect effects of stressors at all trophic levels (i.e., from primary producers to secondary consumers) and impacts on ecosystem functions. Due to the limited ability to test the multitude of potential exposure scenarios, cross-linking aquatic mesocosm studies with virtual mesocosms, i.e., aquatic system models (ASMs), can serve to meet the demand for more environmental realism and ecological relevance in risk assessment. In this study, full control data sets from seven aquatic mesocosm studies conducted at a single test facility under GLP were analysed graphically and using descriptive statistics. Thereby, not only a comprehensive data base but also an insight into the species present, their dynamics over time, and variability in unchallenged mesocosms was observed. While consistency in dynamics could be discerned for physical and chemical parameters, variability was evident for several biological endpoints. This variability points to amplification of small differences over time as well as to stochastic processes. The outline of existing gaps and uncertainties in data leads to the estimation of what can be expected to be captured and predicted by ASMs.
Modelling the Influence of Erosive Fluidization on the Morphology of Fluid Flow and Escape Structures
Authors: Gupta Shubhangi , Micallef Aaron 
Published: July 2023

AbstractFocused fluid flow through sub-seafloor pipes and chimneys, and their seafloor manifestations as pockmarks, are ubiquitous. However, the dynamics of flow localization and evolution of fluid escape structures remain poorly understood. Models based on geomechanical mechanisms like hydro-fracturing and porosity wave propagation offer some useful insights into fluid flow and escape dynamics, but face limitations in capturing features like mobilized granular matter, especially in the upper sediment layers where the link between fracture and pockmark is not always clear. Here, we propose a mathematical model based on the multiphase theory of porous media, where changes in subsurface and seafloor morphology are resolved through seepage-induced erosion, fluidization, transport, and re-deposition of granular material. Through simulation of an idealized scenario of gas escape from overpressured shallow gas reservoir, we demonstrate that our model can capture flow localization and formation of pipes, chimneys, and pockmarks. Our simulations show (1) formation of conical focused-flow conduits with a brecciated core and annular gas channels; (2) pockmarks of W and ring shapes; and (3) pulsed release of gas. Sediment erodibility and flow anisotropy control the morphology of focused fluid flow and escape structures, while permeability shows negligible impact. While the geological setting for this study is theoretical, we show that our results have real-world analogs.
Monitoring leaf nitrogen content in rice based on information fusion of multi-sensor imagery from UAV
Authors: Xu Sizhe , Xu Xingang , Zhu Qingzhen , Meng Yang , Yang Guijun , Feng Haikuan , Yang Min , Zhu Qilei , Xue Hanyu , Wang Binbin 
Published: July 2023

AbstractTimely and accurately monitoring leaf nitrogen content (LNC) is essential for evaluating crop nutrition status. Currently, Unmanned Aerial Vehicles (UAV) imagery is becoming a potentially powerful tool of assessing crop nitrogen status in fields, but most of crop nitrogen estimates based on UAV remote sensing usually use single type imagery, the fusion information from different types of imagery has rarely been considered. In this study, the fusion images were firstly made from the simultaneously acquired digital RGB and multi-spectral images from UAV at three growth stages of rice, and then couple the selecting methods of optimal features with machine learning algorithms for the fusion images to estimate LNC in rice. Results showed that the combination with different types of features could improve the models’ accuracy effectively, the combined inputs with bands, vegetation indices (VIs) and Grey Level Co-occurrence Matrices (GLCMs) have the better performance. The LNC estimation of using fusion images was improved more obviously than multispectral those, and there was the best estimation at jointing stage based on Lasso Regression (LR), with R2 of 0.66 and RMSE of 11.96%. Gaussian Process Regression (GPR) algorithm used in combination with one feature-screening method of Minimum Redundancy Maximum Correlation (mRMR) for the fusion images, showed the better improvement to LNC estimation, with R2 of 0.68 and RMSE of 11.45%. It indicates that the information fusion from UAV multi-sensor imagery can significantly improve crop LNC estimates and the combination with multiple types of features also has a great potential for evaluating LNC in crops.
Supply Constraints and Search Equilibrium in Office Markets
Authors: Marcato Gianluca , Tong Lok Man Michelle 
Published: July 2023

Abstract
We present a new conceptual framework to estimate office supply elasticity, where net business survival, physical and economic mismatch are used to identify frictional and structural vacancy. Alongside regulatory and geographical constraints, we also find an unobserved feature of supply elasticity linked to natural vacancy. Our results confirm that US Metropolitan Statistical Areas are generally supply inelastic and the search and matching process plays a key role in supply dynamics. In the least inelastic markets, investors tend to be more flexible to respond to negative demand shocks. As a result, we observe a reduction in structural vacancy and a subsequent increase in cyclical vacancy given the slow short-term movement in absorption. These findings also shed light upon office market dynamics during the COVID-19 period.
Should Traditional Representative Institutions be Abolished? A Critical Comment on Hélène Landemore’s Open Democracy
Authors: Wolkenstein Fabio 
Published: July 2023

AbstractThis short piece discusses Hélène Landemore’s proposal of an ‘open democracy’, as outlined in her recent book Open Democracy: Reinventing Popular Rule for the Twenty-First Century. Acknowledging the value of Landemore’s radical and ambitious proposals, I draw attention to a number of shortcomings and blind spots that have to do with how the case for an ‘open democracy’ is made: through an unduly brief and dismissive treatment of political parties; a methodological insensitivity to empirical variations of democratic performance and citizens’ evaluations of the latter; a failure to distinguish between higher and ordinary law-making in the discussion of the central Icelandic case; and, finally, a surprising concession that realising an open democracy is all but infeasible in established constitutional democracies. If open democracy is to be an attractive ideal, these issues must arguably be addressed.
False discovery rate envelopes
Authors: Mrkvička Tomáš , Myllymäki Mari 
Published: July 2023

AbstractFalse discovery rate (FDR) is a common way to control the number of false discoveries in multiple testing. There are a number of approaches available for controlling FDR. However, for functional test statistics, which are discretized intomhighly correlated hypotheses, the methods must account for changes in distribution across the functional domain and correlation structure. Further, it is of great practical importance to visualize the test statistic together with its rejection or acceptance region. Therefore, the aim of this paper is to find, based on resampling principles, a graphical envelope that controls FDR and detects the outcomes of all individual hypotheses by a simple rule: the hypothesis is rejected if and only if the empirical test statistic is outside of the envelope. Such an envelope offers a straightforward interpretation of the test results, similarly as the recently developed global envelope testing which controls the family-wise error rate. Two different adaptive single threshold procedures are developed to fulfill this aim. Their performance is studied in an extensive simulation study. The new methods are illustrated by three real data examples.
Diffusion-Driven Frictional Aging in Silicon Carbide
Authors: Nordhagen Even Marius , Sveinsson Henrik Andersen , Malthe-Sørenssen Anders 
Published: July 2023

Abstract
Friction is the force resisting relative motion of objects. The force depends on material properties, loading conditions and external factors such as temperature and humidity, but also contact aging has been identified as a primary factor. Several aging mechanisms have been proposed, including increased “contact quantity” due to plastic or elastic creep and enhanced “contact quality” due to formation of strong interfacial bonds. However, comparatively less attention has been given to other mechanisms that enhance the “contact quantity”. In this study, we explore the influence of crystal faceting on the augmentation of “contact quantity” in cubic silicon carbide, driven by the minimization of surface free energy. Our observations reveal that the temporal evolution of the frictional aging effect follows a logarithmic pattern, akin to several other aging mechanisms. However, this particular mechanism is driven by internal capillary forces instead of the normal force typically associated with friction. Due to this fundamental distinction, existing frictional aging models fail to comprehensively explain the observed behavior. In light of these findings, we derive a model for the evolution of contact area caused by diffusion-driven frictional aging, drawing upon principles from statistical mechanics. Upon application of a normal force, the friction force is increased due to plastic creep. This investigation presents an alternative explanation for the logarithmic aging behavior observed and offers the potential to contribute to the development of more accurate friction models.

Graphical Abstract
Chemical Composition of Wet Atmospheric Deposition in a Natural Urban Reserve, Conservation of Green Urban Areas: a Mexico City Case Study
Authors: Fonseca-Salazar Ma. Alejandra , Sosa-Echeverría Rodolfo , Alarcón-Jiménez Ana Luisa , Sánchez-Álvarez Pablo 
Published: July 2023

AbstractGreen areas are essential for life in cities and for the conservation of ecosystem services in the case of megacities such as Mexico City. Green areas mitigate air pollution, reduce the temperature, and promote infiltration to feed the aquifers that, in the case of Mexico City, supply 68% of the water. Additionally, food production and recreational usage are important for the population. In the years 2017 and 2018, the chemical composition of wet deposition in the southern part of Mexico City was analyzed, daily and weekly. The study area is located in the greenest part of Mexico City, an important site for water recharge and carbon sequestration. Mexico City, like other megacities of high- and low-income countries, faces serious problems of air pollution. The purpose of this study was to measure the amount of total nitrogen and sulfur that is available in a natural reserve located inside the National Autonomous University of Mexico, and conductivity, pH, rain volume, and anions and cations were analyzed as well. Eighteen months of data were analyzed in order to understand the atmospheric deposition in and anthropogenic influence on an urban green natural area from the southern part of the city. Although both stations are less than 2 km apart, there are significant differences in their chemical composition; however, no differences were found for precipitation and pH, indicating that each station provides a local contribution, depending on local events and sources. Samples included rain events match for both sampling sites, with 67% of the samples in the same rain event match. Nonetheless, when only volume is compared for each year, both tests showed no significant difference (pv = 0.520). Throughout the year, various rainfall rates occur at the CU-CCA and REPSA stations, and the rainy season presents during the May–October period; the median value registered for both monitoring stations was 780 mL, and maximal rainfall was 4780 mL presenting at the CU-CCA station.
How do urbanization and alien species affect the plant taxonomic, functional, and phylogenetic diversity in different types of urban green areas?
Authors: Dylewski Łukasz , Banaszak-Cibicka Weronika , Maćkowiak Łukasz , Dyderski Marcin K. 
Published: July 2023

AbstractHuman pressure on urban landscapes has serious consequences for urban plant species. Therefore, environmental and anthropogenic factors affect the assembly of urban wildlife in plant communities. For biodiversity conservation and ecosystem services in urban areas, it is crucial to understand the impacts of urbanization as well as the introduction of alien plant species on urban plant communities. On 47 sites in Poznań (W Poland), we studied variation within and between three management greenery habitats, i.e., urban parks, greenery associated with housing estates, and urban grasslands, as they relate to taxonomical, functional, and phylogenetic alpha and beta diversity. We also examined how urbanization (measured by ISA) and alien plant species relate to vegetation compositional differences. We found that both urbanization and alien plant species cover decreased alpha diversity, while urbanization had various impacts on beta diversity within each studied habitat. Our results suggest that human pressure leads to similarities in the urban flora, where plant species with specific functional traits adapted to the urban environment. To achieve sustainable urbanization, urban planners should not only create diverse green spaces but also eliminate alien plants, increasing the role of urban land management in promoting the wildness of plant biodiversity in cities.