bluuebunny/crossref_metadata_2025_split huggingface dataset:
Memory effects of visual and olfactory landmark information in human wayfinding
Authors: Schwarz Mira , Hamburger Kai 
Published: November 2023

AbstractNon-human animals are exceptionally good at using smell to find their way through the environment. However, the use of olfactory cues for human navigation is often underestimated. Although the sense of smell is well-known for its distinct connection to memory and emotion, memory effects in human navigation using olfactory landmarks have not been studied yet. Therefore, this article compares wayfinding and recognition performance for visual and olfactory landmarks learned by 52 participants in a virtual maze. Furthermore, it is one of the first empirical studies investigating differences in memory effects on human navigation by using two separate test situations 1 month apart. The experimental task was to find the way through a maze-like virtual environment with either olfactory or visual cues at the intersections that served as decision points. Our descriptive results show that performance was above chance level for both conditions (visual and olfactory landmarks). Wayfinding performance did not decrease 1 month later when using olfactory landmarks. In contrast, when using visual landmarks wayfinding performance decreased significantly, while visual landmarks overall lead to better recognition than olfactory landmarks at both times of testing. The results demonstrate the unique character of human odor memory and support the conclusion that olfactory cues may be used in human spatial orientation. Furthermore, the present study expands the research field of human wayfinding by providing a study that investigates memory for landmark knowledge and route decisions for the visual and olfactory modality. However, more studies are required to put this important research strand forward.
Investigation of native cellulose under high pressure using microfocused synchrotron radiation
Authors: Storm Selina L. S. , Krywka Christina , Burghammer Manfred , di Cola Emanuela , Müller Martin 
Published: November 2023

AbstractThe mechanical properties of native cellulose are critical for understanding the properties of natural biomaterials. To investigate the elastic moduli of the cellulose crystalline fraction an isotropic mechanical load using hydrostatic pressure ranging from 0.01 to 0.5 GPa was applied to flax fibers, pine wood and tension wood samples. The response of the crystalline part was monitored by using microfocused synchrotron radiation. The compressibility of the crystalline fraction of native cellulose was anisotropic and dependent on the crystal size and possibly on the composition of the sample. The compressibilities along the [001] direction, where covalent bonds hold the cellulose chains together, varied between 2.1 and 2.9 TPa−1 for the different samples and confirm similar values found for cotton fibres. However, the compressibilities along the [100]-direction range from 56.2 TPa−1 to 63.5 TPa−1, slightly exceeding the previously determined value of 50 TPa−1, which can possibly be attributed to differences between individual samples.
Are the income and price elasticities of economy-wide electricity demand in middle-income countries time-varying? Evidence from panels and individual countries
Authors: Liddle Brantley , Hasanov Fakhri 
Published: November 2023

AbstractUnderstanding the income/GDP and price elasticities of electricity demand is important for forecasting demand and evaluating the potential impact of energy/climate policies. Yet, there has been little work on this topic that focuses on countries outside the OECD. We employ a new database of cross-country real economy-wide electricity prices and apply a set of panel-based and time-series-based methods that together account for temporal heterogeneity and cross-sectional heterogeneity on a group of middle-income/rapidly growing countries. Both our panel results and the eight individual country analyses that applied structural time series modeling determined that both the income and price elasticities of economy-wide electricity demand are stable/effectively constant over time. In addition, our results suggested that the income elasticity of economy-wide electricity demand for these middle-income countries was on average 0.8. The price elasticity—which displayed more movement over time (at least in percentage terms)—was on average -0.09. The results of essentially constant income and price elasticities is analogous to recent findings focused on economy-wide energy demand in middle-income countries.
A Mechanism to Transform Complex Salicinoids with Caffeoylquinic Acids in Lepidopteran Specialist Herbivores (Notodontidae)
Authors: Schnurrer Florian , Nakamura Yoko , Paetz Christian 
Published: November 2023

AbstractLarvae of the Salicaceae-adapted Notodontidae have developed a unique mechanism to metabolize the chemical defenses of their Salicaceae host plants. Salicinoids and salicortinoids are enzymatically transformed into salicyloyl, benzoyl and mixed salicyloyl-benzoyl quinates. The source of quinates and benzoates was previously unknown. To elucidate the origin of quinate and benzoate in the metabolic end-products, we fed Cerura vinula caterpillars with 13C-labelled poplar defense compounds. Caffeoylquinic acids (CQAs), such as chlorogenic acid, neochlorogenic acid and their methyl esters, were identified as the source of quinates in the caterpillar’s metabolism. Benzoyl substituents in the quinate end-products were found to originate from compounds such as tremulacin or trichocarpin. Salicaceae-adapted Notodontidae caterpillars have the ability to overcome their host plant’s chemical defense by metabolizing CQAs and salicinoids, both abundant defense compounds in Salicacea plants, by a strategy of transformation and recombination. We believe that our study opens up avenues for understanding salicortinoid biotransformation at the enzymatic level.
A new statistical workflow (R-packages based) to investigate associations between one variable of interest and the metabolome
Authors: Ferrario Paola G. , Bub Achim , Frommherz Lara , Krüger Ralf , Rist Manuela J. , Watzl Bernhard 
Published: November 2023

Abstract
Introduction
In metabolomics, the investigation of associations between the metabolome and one trait of interest is a key research question. However, statistical analyses of such associations are often challenging. Statistical tools enabling resilient verification and clear presentation are therefore highly desired.

Objectives
Our aim is to provide a contribution for statistical analysis of metabolomics data, offering a widely applicable open-source statistical workflow, which considers the intrinsic complexity of metabolomics data.

Methods
We combined selected R packages tailored for all properties of heterogeneous metabolomics datasets, where metabolite parameters typically (i) are analyzed in different matrices, (ii) are measured on different analytical platforms with different precision, (iii) are analyzed by targeted as well as non-targeted methods, (iv) are scaled variously, (v) reveal heterogeneous variances, (vi) may be correlated, (vii) may have only few values or values below a detection limit, or (viii) may be incomplete.

Results
The code is shared entirely and freely available. The workflow output is a table of metabolites associated with a trait of interest and a compact plot for high-quality results visualization. The workflow output and its utility are presented by applying it to two previously published datasets: one dataset from our own lab and another dataset taken from the repository MetaboLights.

Conclusion
Robustness and benefits of the statistical workflow were clearly demonstrated, and everyone can directly re-use it for analysis of own data.
Effect of α-cypermethrin and pirimiphos-methyl on wing morphology of Tribolium castaneum (Herbst) and T. confusum Jacquelin du Val: a comparative study
Authors: Žikić Vladimir , Lazarević Maja , Stanković Saša S. , Milošević Marijana Ilić , Kavallieratos Nickolas G. , Skourti Anna , Boukouvala Maria C. 
Published: November 2023

AbstractTribolium castaneum (Herbst) and Tribolium confusum Jacquelin du Val (Coleoptera: Tenebrionidae) are widespread and serious pests of stored products. Various insecticides are applied aiming to effectively manage both species. Here, two insecticides are tested, the pyrethroid α-cypermethrin and the organophosphate pirimiphos-methyl, hypothesizing that they can lead to morphological changes in the certain body parts of the adult offspring of treated T. castaneum and T. confusum parental female adults. For this purpose, the geometric morphometric method to the elytra and hindwings was applied. Both males and females were included in the analysis. The results showed that adult individuals of T. confusum showed higher tolerance to both insecticides compared to T. castaneum adults. This finding is reflected in analyses of both pairs of wings in T. confusum where changes in shape were negligible. The hindwings of T. castaneum experienced deformations to both insecticides. More significant changes in wing shape were observed in the α-cypermethrin treatment compared to pirimiphos-methyl. In the case of T. castaneum, even the shortest exposure to insecticides (5 min) is enough to provoke shape changes in the hindwings. Deformities in offspring, caused after treatment of their parents with insecticides, could moderate the frequency of insecticidal applications in storages.
Global trends of pyrolysis research: a bibliometric analysis
Authors: Márquez Alejandro , Ortiz Isabel , Sánchez-Hervás José María , Monte María Concepción , Negro Carlos , Blanco Ángeles 
Published: November 2023

AbstractPyrolysis has become an interesting waste valorization method leading to an increasing number of research studies in this field in the last decade. The present study aims to provide a comprehensive knowledge map of scientific production in pyrolysis, discuss the current state of research, and identify the main research hotspots and trends in recent years. The systematic review, supported by analysis of countries and institutions, keyword co-occurrence analysis, analysis of keyword trends, journal analysis, and article impact, was carried out on 6234 journal articles from the Science Citation Index Expanded database of the Web of Science Core Collection. As a result, four main research hotspots were identified: 1) characterization techniques and pyrolysis kinetic models, 2) biochar production and its main applications, 3) bio-oil production and catalytic pyrolysis, and 4) co-pyrolysis, which has become a consolidated research hotspot since 2018. Additionally, the main challenges and opportunities for future research have been identified, such as 1) the development of multi-step kinetic models for studying complex wastes, 2) the integration of biochar into other valorization processes, such as anaerobic digestion, and 3) the development of catalytic hydropyrolysis for the valorization of organic waste. This bibliometric analysis provides a visualization of the current context and future trends in pyrolysis, facilitating future collaborative research and knowledge exchange.
Seasonal Feeding Behavior of Aquaculture Eastern Oysters (Crassostrea virginica) in the Mid-Atlantic
Authors: Barr Janine M. , Munroe Daphne , Rose Julie M. , Calvo Lisa , Cheng Kurt M. , Bayer Skylar , Kreeger Danielle 
Published: November 2023

AbstractThe Eastern Oyster (Crassostrea virginica) is a commercially important aquaculture species and food resource along the Atlantic and Gulf coasts of the USA. In addition to its economic value, oyster aquaculture provides ecological value such as water quality improvement. Oyster filtration is highly variable as filtration behavior is influenced by environmental conditions, oyster size, and oyster energetic demands. However, average rates generated in laboratory experiments are often used to estimate the ecological impact of oyster filtration, and there is a need for field-based, farm-specific estimates of filtration that account for this variation. In this study, field experiments were conducted between September 2020 and September 2021 to estimate seasonal oyster filtration physiology at oyster farms in three different bays in the Mid-Atlantic (Barnegat Bay and Delaware Bay in New Jersey and Rehoboth Bay in Delaware). The physiological activity of oysters at each farm varied such that oysters at Barnegat Bay were the most active and oysters at Rehoboth Bay were the least active. Seasonal physiological trends were observed such that filtration behavior generally increased in warmer months. An increase in physiological activity across all farms was associated with an increase in salinity and temperature, but physiological activity at each farm was associated with a different suite of environmental variables including total particulate matter and the organic content of seston. This study provides a robust dataset which can be incorporated into models estimating ecological filtration rates in the Mid-Atlantic and adds to the growing body of evidence supporting bivalve aquaculture as a nutrient reduction strategy.
Interpreting oral conditions of the past: biocultural factors affecting Gran Canaria’s population between the fifteenth and eighteenth centuries (Canary Islands, Spain)
Authors: Izquier Aarón Morquecho , Santana Jonathan , González Rebeca García 
Published: November 2023

AbstractThe European colonization of the Canary Islands was accompanied by new farming and food processing techniques as well as new dietary patterns. The current study sheds light on the impact of these new techniques and foodstuffs by delving into the oral conditions of members of this society in this timeframe. The analyses of the oral conditions of 85 adults of the Modern Era of Gran Canaria combined with spatial, temporal, and sex criteria led to identifying a paleodietary profile characteristic of this population. This pattern served to evaluate differences among other populations of the archipelago such as the earlier Indigenous Period of Gran Canaria and the Modern Era populations of the neighboring islands of Tenerife and Lanzarote. This study reveals a high prevalence of caries, dental calculus, and antemortem tooth loss, notably along the lines of sex. Comparisons between the different Indigenous and the Modern populations also point to statistical differences between dental caries and heavy macrowear. The Gran Canaria’s Modern Era population had a carbohydrate-rich diet compatible with the intake of cereal and sugar cane products. Oral conditions among males were likely influenced by the newly introduced consumption of tobacco. The results also confirm that the European colonization strongly altered the dietary patterns and food processing techniques inherited from the Indigenous Period. Finally, the comparisons of the Modern Era populations of the three islands of the archipelago reveal an asymmetry between dietary patterns and food processing techniques from one island to another.
Phase Portraits of a Class of Continuous Piecewise Linear Differential Systems
Authors: Li Jie , Llibre Jaume 
Published: November 2023

AbstractThe phase portraits of the planar linear differential systems are very well known. This is not the case for the phase portraits of the planar continuous piecewise linear differential systems. In this paper we classify the phase portraits of the class of planar continuous piecewise linear differential systems of the form $$\begin{aligned} {\dot{x}}= a|x|+by+c,\qquad {\dot{y}}= \alpha |x|+\beta y+\gamma , \end{aligned}$$

x
˙

=

a
|
x
|

+
b
y
+
c
,

y
˙

=
α

|
x
|

+
β
y
+
γ
,

in the Poincaré disc when $$a\beta -b\alpha \ne 0$$

a
β
-
b
α
≠
0

, and prove the existence and uniqueness of limit cycles. Note that on the straight line $$x=0$$

x
=
0

these differential systems are only continuous.
Electrochemical Activity of Carbon-Supported Pt-Nanoparticles: Effect of Pt-Precursor Ligand and/or Presence of Anions During Polyol Synthesis
Authors: Omann Kristian Juul , Sharma Raghunandan , Andersen Shuang Ma 
Published: November 2023

AbstractThis study revisits the impacts of the presence of OH− and Cl− anions and/or different forms of Pt precursors during polyol synthesis of carbon-supported electrocatalysts. Efficiency of the synthesis process in terms of the %conversion of a Pt complex to Pt metal has been quantified. It is observed that Pt precursors based on [PtCl6]2− are reduced easily compared to those based on [Pt(OH)6]2−. Furthermore, presence of excess Cl− during synthesis results in decreased %conversion and reduced ECSA, which is opposite from other reported work synthesized at higher temperature and pure solvents. For Pt/C synthesis under mild conditions, 100 °C and 30 vol% EG in water as solvent, presence of OH− during synthesis decreases the ECSA and hence increases the Pt nanoparticle size and change of catalyst surface structure. Finally, a method to get insights into the surface structure of Pt-nanoparticles through analysis of the H-adsorption/H-desorption peaks has been proposed.
Graphical Abstract
Internal Polarization Field Induced Hydroxyl Spillover Effect for Industrial Water Splitting Electrolyzers
Authors: Xie Jingyi , Wang Fuli , Zhou Yanan , Dong Yiwen , Chai Yongming , Dong Bin 
Published: November 2023

AbstractThe formation of multiple oxygen intermediates supporting efficient oxygen evolution reaction (OER) are affinitive with hydroxyl adsorption. However, ability of the catalyst to capture hydroxyl and maintain the continuous supply at active sits remains a tremendous challenge. Herein, an affordable Ni2P/FeP2 heterostructure is presented to form the internal polarization field (IPF), arising hydroxyl spillover (HOSo) during OER. Facilitated by IPF, the oriented HOSo from FeP2 to Ni2P can activate the Ni site with a new hydroxyl transmission channel and build the optimized reaction path of oxygen intermediates for lower adsorption energy, boosting the OER activity (242 mV vs. RHE at 100 mA cm–2) for least 100 h. More interestingly, for the anion exchange membrane water electrolyzer (AEMWE) with low concentration electrolyte, the advantage of HOSo effect is significantly amplified, delivering 1 A cm–2 at a low cell voltage of 1.88 V with excellent stability for over 50 h.
Untethered Micro/Nanorobots for Remote Sensing: Toward Intelligent Platform
Authors: Wang Qianqian , Yang Shihao , Zhang Li 
Published: November 2023

AbstractUntethered micro/nanorobots that can wirelessly control their motion and deformation state have gained enormous interest in remote sensing applications due to their unique motion characteristics in various media and diverse functionalities. Researchers are developing micro/nanorobots as innovative tools to improve sensing performance and miniaturize sensing systems, enabling in situ detection of substances that traditional sensing methods struggle to achieve. Over the past decade of development, significant research progress has been made in designing sensing strategies based on micro/nanorobots, employing various coordinated control and sensing approaches. This review summarizes the latest developments on micro/nanorobots for remote sensing applications by utilizing the self-generated signals of the robots, robot behavior, microrobotic manipulation, and robot-environment interactions. Providing recent studies and relevant applications in remote sensing, we also discuss the challenges and future perspectives facing micro/nanorobots-based intelligent sensing platforms to achieve sensing in complex environments, translating lab research achievements into widespread real applications.
Interviewkunst
Authors: Hoffmann Torsten 
Published: November 2023

ZusammenfassungInterviews sind ein Paradebeispiel für die Ausweitung des Literarischen in der Gegenwartsliteratur. Lange Zeit als paratextuelle Sekundärkommunikation verstanden (und abgewertet), lässt sich seit rund zwanzig Jahren eine Entparatextualisierung des Interviews beobachten. Der Beitrag vergleicht die aktuelle Situation mit der Stellung des Interviews um 1970 und fragt nach Gründen für diese tektonische Verschiebung.
Kontrollierte Literatur
Authors: Haas Claude 
Published: November 2023

ZusammenfassungDer Beitrag wendet sich dem Zusammenhang zwischen Stil und Gestik im deutschsprachigen Poproman zu. Während misslingende Gesten oft als Subversion gesellschaftlicher Konventionen betrachtet werden, die sich im literarischen Stil kondensieren, stimmt ein Autor wie Leif Randt Stil und Gestik bewusst auf kulturelle Erwartungen hin ab. Da er das eigene Schreiben zugleich gegen außerliterarische Indienstnahmen der Literatur abschottet, avancieren Stil und Gestik in seinen Romanen zu privilegierten Statthaltern der ästhetischen Autonomie.
The risk co-de model: detecting psychosocial processes of risk perception in natural language through machine learning
Authors: Rizzoli Valentina 
Published: November 2023

AbstractThis paper presents a classification system (risk Co-De model) based on a theoretical model that combines psychosocial processes of risk perception, including denial, moral disengagement, and psychological distance, with the aim of classifying social media posts automatically, using machine learning algorithms. The risk Co-De model proposes four macro-categories that include nine micro-categories defining the stance towards risk, ranging from Consciousness to Denial (Co-De). To assess its effectiveness, a total of 2381 Italian tweets related to risk events (such as the Covid-19 pandemic and climate change) were manually annotated by four experts according to the risk Co-De model, creating a training set. Each category was then explored to assess its peculiarity by detecting co-occurrences and observing prototypical tweets classified as a whole. Finally, machine learning algorithms for classification (Support Vector Machine and Random Forest) were trained starting from a text chunks x (multilevel) features matrix. The Support Vector Machine model trained on the four macro-categories achieved an overall accuracy of 86% and a macro-average F1 score of 0.85, indicating good performance. The application of the risk Co-De model addresses the challenge of automatically identifying psychosocial processes in natural language, contributing to the understanding of the human approach to risk and informing tailored communication strategies.