bluuebunny/crossref_metadata_2025_split huggingface dataset:
Influence of synthesis route on structural properties of SnFe2O4 spinel phase via methods of co-precipitation, sol–gel and solvothermal: morphology, phase analysis, crystallite size and lattice strain
Authors: Sedaghati-Jamalabad Gh. , Bagheri-Mohagheghi M. M. 
Published: April 2024

Abstract
In this study, regarding to the wide applications of spinel ferrites in various fields such as Li ion-batteries, photocatalysts, and optoelectronics, the structural and morphological properties of tin ferrite oxide (SnFe2O4) nanoparticles are investigated using X-ray diffraction (XRD) analysis and field emission scanning electron microscopy (FESEM). The sol–gel, solvothermal, and co-precipitation methods were used to synthesize the SnFe2O4 nanoparticles, and the effect of annealing temperatures at T = 350 °C, 450 °C, and 550 °C was investigated. The XRD results confirmed the formation of tin ferrite spinel phase at an annealing temperature of 350 °C with a preferred peak (311). Crystallite size (D) and strain (ε) of SnFe2O4 nanoparticles was determined in region 20–45 nm and 2–4 × 10–4, respectively, using the Scherer, Williamson–Hall, and Rietveld computational methods. The results showed that the crystallite size in the samples increased with increasing annealing temperature. This increase is attributed to the reduction of defects, imperfections and lattice strain, which leading to an increase in the lattice constants and unit cell volume in the nanocrystalline structure. The Rietveld method determine smaller crystal sizes compared to the Williamson–Hall and Scherer methods because it can correct for peak broadening by taking into account all instrumental factors. The FESEM images of the synthesized nanostructures of SnFe2O4 showed cubic and polyhedral grains with cluster growth and an average grain size of 50–80 nm. According to the crystal structure of tin ferrite spinel, the cubic morphology confirmed the formation of this structure. The average crystallite size and grains in the synthesized samples was determined using X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) analysis, respectively. The formation conditions of the SnFe2O4 spinel phase and other phases in the synthesis process at different temperatures and dependence of structural parameters was studied by various structural models for the samples.
Exploring the interactions between algae and archaea
Authors: Lian Jie , Zou Dayu , Trebuch Lukas M. , Duan Changhai , Li Meng 
Published: April 2024

AbstractAlgae and archaea co-exist in diverse aquatic ecosystems and play a significant role in ecological functions and biogeochemical cycles. Compared to well-studied algal–bacterial interactions, there is a lack of information on algal–archaeal interactions and how their interactions affect their physiological fitness and nutrient cycles in either artificial cultivation systems or natural environments. The vast archaeal biodiversity, as indicated by genomic sequencing and computational approaches, has stimulated great interest in exploring uncultivated archaea to expand our knowledge of algae-archaea symbiosis. In this review, we summarize the latest studies on the diversity of algae-associated archaea and their (putative) symbiotic interactions, highlight the effects of algal–archaeal interactions on biogeochemical cycles and extend such knowledge to facilitate novel archaeal isolation and a broad range of algae-based biotechnological applications.
Learning by doing? The relationship between effort, learning effect and product quality during hackathons of novice teams
Authors: Martins Pacheco Nuno Miguel , Geisler Mara , Bajramovic Medina , Fu Gabrielle , Vazhapilli Sureshbabu Anand , Mörtl Markus , Zimmermann Markus 
Published: April 2024

Abstract
Design education prepares novice designers to solve complex and challenging problems requiring diverse skill sets and an interdisciplinary approach. Hackathons, for example, offer a hands-on, collaborative learning approach in a limited time frame to gain practical experience and develop problem-solving skills quickly. They enable collaboration, prototyping and testing among interdisciplinary teams. Typically, hackathons strongly focus on the solution, assuming that this will support learning. However, building the best product and achieving a strong learning effect may not be related. This paper presents the results of an empirical study that examines the relationship between product quality, learning effect and effort spent in an academic 2-week hackathon. Thirty teams identified user problems in this course and developed hardware and mechatronic products. This study collected the following data: (1) effort spent during the hackathon through task tracking, (2) learning effect through self-assessment by the participants and (3) product quality after the hackathon by an external jury. The study found that the team effort spent has a statistically significant but moderate correlation with product quality. The correlation between product quality and learning effect is statistically insignificant, suggesting that for this setting, there is no relevant association.
War and women: An analysis of Ukrainian refugee women staying in the Czech Republic
Authors: Preiss Marek , Fňašková Monika , Berezka Sofia , Yevmenova Tetiana , Heissler Radek , Sanders Edel , Winnette Petra , Rektor Ivan 
Published: April 2024

Abstract
In addition to the loss of life, Russian aggression against Ukraine, which began in February 2022, also brings interpersonal losses resulting from the need to emigrate. Parallel to the fighting men, women bear most of the burden of caring for the family. Using in-depth interviews supplemented by questions about adverse childhood experiences and administration of The Centrality of Events Scale and the PTSD Checklist – PCL-5 with 43 Ukrainian women (18–60 years old), we analyzed adaptation to the situation of emigration and the association of their war and earlier experiences with the level of traumatization. Women were interviewed shortly after emigration to the Czech Republic (3–42 week afterward). High levels of adverse childhood experiences and post-traumatic stress symptoms were found. The war was perceived as a currently negative central event associated with traumatic stress symptoms, and 79% of the sample expressed the opinion that the war had changed them. The results of this study suggest an intertwining of previous life experiences with the current need and ability to adapt.
Plague and the Mongol conquest of Baghdad (1258)? A reevaluation of the sources
Authors: Brack Jonathan , Biran Michal , Amitai Reuven 
Published: April 2024

Abstract
This paper reexamines the sources used by N. Fancy and M.H. Green in “Plague and the Fall of Baghdad (1258)” (Medical History, 65/2 (2021), 157–177). Fancy and Green argued that the Arabic and Persian descriptions of the Mongol sieges in Iran and Iraq, and in particular, in the conquest of Baghdad in 1258, indicate that the besieged fortresses and cities were struck by Plague after the Mongol sieges were lifted. This, they suggested, is part of a recurrent pattern of the outbreak of Plague transmitted by the Mongol expansion across Eurasia. Fancy and Green concluded that the primary sources substantiate the theory driven by recent paleogenetic studies indicating that the Mongol conquests of the thirteenth century set the stage for the massive pandemic of the mid-fourteenth century. The link between the Plague outbreak and the Mongol siege of Baghdad relies on three near-contemporaneous historical accounts. However, our re-examination of the sources shows that the main text (in Persian) has been significantly misunderstood, and that the two other texts (in Syriac and Arabic) have been mis-contextualized, and thus not understood properly. They do not support the authors’ claim regarding Plague epidemic in Baghdad in 1258, nor do other contemporary and later Arabic texts from Syria and Egypt adduced by them, which we re-examine in detail here. We conclude that there is no evidence for the appearance of Plague during or immediately after the Mongol conquests in the Middle East, certainly not for its transmission by the Mongols.
Generating preferential attachment graphs via a Pólya urn with expanding colors
Authors: Singh Somya , Alajaji Fady , Gharesifard Bahman 
Published: April 2024

AbstractWe introduce a novel preferential attachment model using the draw variables of a modified Pólya urn with an expanding number of colors, notably capable of modeling influential opinions (in terms of vertices of high degree) as the graph evolves. Similar to the Barabási-Albert model, the generated graph grows in size by one vertex at each time instance; in contrast however, each vertex of the graph is uniquely characterized by a color, which is represented by a ball color in the Pólya urn. More specifically at each time step, we draw a ball from the urn and return it to the urn along with a number of reinforcing balls of the same color; we also add another ball of a new color to the urn. We then construct an edge between the new vertex (corresponding to the new color) and the existing vertex whose color ball is drawn. Using color-coded vertices in conjunction with the time-varying reinforcing parameter allows for vertices added (born) later in the process to potentially attain a high degree in a way that is not captured in the Barabási-Albert model. We study the degree count of the vertices by analyzing the draw vectors of the underlying stochastic process. In particular, we establish the probability distribution of the random variable counting the number of draws of a given color which determines the degree of the vertex corresponding to that color in the graph. We further provide simulation results presenting a comparison between our model and the Barabási-Albert network.
Structural Microaggressions for Explaining Outcome Gaps
Authors: Akagi Mikio 
Published: April 2024

AbstractMicroaggressions are hypothesized to play a causal role in undesirable population effects such as racial health gaps, but the mechanisms through which this occurs are not yet well understood. I call inquiry about these mechanisms the “explanatory project.” I suggest that the explanatory project has been hindered by microaggression concepts tailored to be applicable under conditions of lived uncertainty, rather than to facilitate understanding of structural causes. I defend a pluralist, structural account of microaggressions from objections by Regina Rini that, while appropriate for ethical projects, do not apply to the explanatory project.
Relationship among thermal environment, stage of lactation, body characteristics, yield and milk constituents of dairy Gyr cows managed on pasture
Authors: De-Sousa Karolini Tenffen , Ligori Viviane Andrade , Gonçalves Caroline Martins , Negrão João Alberto , Deniz Matheus , Fernandes André Rabelo , Barbosa Glayk Humberto Vilela , El Faro Lenira 
Published: April 2024

AbstractOur aims were to evaluate changes in body characteristics, milk yield and milk constituents as well as to determine the relationship between the thermal environment and production characteristics during the first lactation of dairy Gyr cows managed on pasture. Between 2013 and 2015, forty-five primiparous dairy Gyr cows were evaluated from prepartum to 10 months of lactation in Southeast of Brazil. Body weight, body condition score (BCS), subcutaneous fat thickness (SFT), milk yield (305 d), and milk constituents were collected monthly and progesterone was collected weekly. Additionally, we determined the temperature humidity index (THI) based on microclimate data. Overall, the cows lost body weight until six months of lactation and there was a progressive decrease in BCS, SFT, milk yield and milk lactose as the months in lactation progressed. In contrast, there was an increase in milk fat, milk protein and milk solids. The thermal environment did not pose a consistent heat challenge, nevertheless, we found a positive correlation between the average THI two days before milk collection with milk yield, fat and lactose contents, but in contrast a negative correlation was found with total solids and protein. In conclusion, the THI and months of lactation affected the yield and constituents of milk. However, more studies are necessary to understand the impacts of body characteristics and thermal environment on yield and milk constituents throughout the productive life of Gyr dairy cows.
The white grunt, Haemulon plumierii (Lacepède, 1801) as paratenic and definitive host of two acanthocephalan species, with the description of a new species of Dollfusentis (Palaeacanthocephala: Leptohynchoididae) from the Yucatán Peninsula, Mexico
Authors: García-Varela Martín , Sereno-Uribe Ana L. , Solórzano-García Brenda , Pérez-Ponce de León Gerardo 
Published: April 2024

Abstract
Acanthocephalans are a group of obligate endoparasites that alternate between vertebrates and invertebrates to complete their life cycles. Occasionally, the same individual host acts as a definitive or paratenic host for different acanthocephalan species. In this study, acanthocephalans were sampled in marine fish in three localities of the Yucatán Peninsula; adults and cystacanths were recovered from the intestine and body cavity, respectively, of Haemulon plumierii from off the coast of Sisal, Yucatán. Ribosomal DNA sequences (small and large subunits) were used to test the phylogenetic position of the species of the genus Dollfusentis, whereas the mtDNA gene cox 1 was used for assessing species delimitation. The cox 1 analysis revealed an independent genetic lineage, which is recognized herein as a new species, Dollfusentis mayae n. sp. The new species is morphologically distinguished from the other six congeners by having a cylindrical proboscis armed with 22–25 longitudinal rows bearing 12 hooks each. The cystacanths were morphologically identified as Gorgorhynchus medius by having a cylindrical trunk covered with tiny irregular spines on the anterior region, and a cylindrical proboscis armed with 17–18 longitudinal rows of 21 hooks each; small and large subunit phylogenetic analyses yielded G. medius within the family Isthomosacanthidae, suggesting that Gorgorhynchus should be transferred to this family from Rhadinorhynchidae where it is currently allocated.
Evolution of tick vaccinology
Authors: de la Fuente José , Ghosh Srikant 
Published: April 2024

AbstractTicks represent a major concern for society worldwide. Ticks are also difficult to control, and vaccines represent the most efficacious, safe, economically feasible and environmentally sustainable intervention. The evolution of tick vaccinology has been driven by multiple challenges such as (1) Ticks are difficult to control, (2) Vaccines control tick infestations by reducing ectoparasite fitness and reproduction, (3) Vaccine efficacy against multiple tick species, (4) Impact of tick strain genetic diversity on vaccine efficacy, (5) Antigen combination to improve vaccine efficacy, (6) Vaccine formulations and delivery platforms and (7) Combination of vaccines with transgenesis and paratransgenesis. Tick vaccine antigens evolved from organ protein extracts to recombinant proteins to chimera designed by vaccinomics and quantum vaccinomics. Future directions will advance in these areas together with other novel technologies such as multiomics, AI and Big Data, mRNA vaccines, microbiota-driven probiotics and vaccines, and combination of vaccines with other interventions in collaboration with regions with high incidence of tick infestations and tick-borne diseases for a personalized medicine approach.
How do enrollees feel about support in Big Hospices? – The caregiver experience of emotional, spiritual, and bereavement support by profit status among large US providers
Authors: Hotchkiss Jason T. , Ridderman Emily , Hotchkiss Brendan T. 
Published: April 2024

AbstractObjectivesRecent findings narrate profiteering detrimentally impacting hospice care quality. However, no study has examined the caregiver experience of emotional and spiritual support expressed online. The purpose was to evaluate the hospice caregiver’s experience of emotional, spiritual, and bereavement support and whether the care was respectful and compassionate to the care unit.MethodsRetrospective mixed methods of sentiment and quantitative analysis. Sources were online caregiver reviews (n = 4,279), Consumer Assessment of Healthcare Providers and Systems (CAHPS) data on the 50 largest US hospices.ResultsCaring and compassionate professionals were lauded in nonprofit (+.57) and for-profit settings (+.46). The nonprofit experience was in the excellent range (+42) for emotional, spiritual, and bereavement support but fell to dissatisfying (–.15) among for-profits. A respectful experience (16%) was much less commonly expressed than a compassionate one (38%). Distribution of CAHPS “Treating patient with respect” (M = 89.62, SD = 2.63) and “Emotional and spiritual support” (M = 89.80, SD = 2.04) limited inter-hospice comparisons.Significance of resultsCompassionate professionals were thanked and praised regardless of profit status. Sadly, anger was expressed toward large, for-profits more fixated on census than emotional, spiritual, and bereavement support; thankfully nonprofits were more supportive. CAHPS items for “Treating patient with respect” and “Emotional, spiritual support” offer limited discriminating value since low CAHPS performers always had relatively high scores on these 2, yet otherwise low scores on the remaining 6. Online reviews on the same topics provide a more substantive and realistic appraisal – distinguishing high from low performers. A higher bar than mere respect is needed for the tender experience of death, dying, and grieving. Compassion is an especially relevant addition to CAHPS since caregivers named compassionate staff as a distinguishing factor. Parity for mental health at end of life is a vital research topic. Future research should also explore the caregiver expectations set on admission.
Exploring unmet concerns in home hospice cancer care: Perspectives of patients, informal caregivers, palliative care providers, and family physicians
Authors: Ben-Arye Eran , Samuels Noah , Keshet Yael , Golan Miri , Baruch Erez , Dagash Jamal 
Published: April 2024

AbstractObjectivesThe study examines perspectives of patients in home hospice care; their informal caregivers; palliative health-care providers (HCPs); and family physicians, all regarding patients’ unmet needs and quality of life (QoL)-related concerns.MethodsParticipants from all 4 groups were approached within 2 months after the patient’s admission to the home hospice care unit. Participants completed Edmonton Symptom Assessment Scale (ESAS) and Measure Yourself Concerns and Wellbeing (MYCAW) questionnaires, for patient’s QoL-related concerns. Qualitative analysis of short narratives was conducted using ATLAS.ti software for systematic coding.ResultsIn total, 78 participants completed the study questionnaires: 24 patients, 22 informal caregivers, 22 palliative HCPs, and 11 family physicians. Informal caregivers gave higher scores (i.e., greater severity) than patients for fatigue on ESAS (p = 0.009); and family physicians lower scores than patients for ESAS drowsiness (p = 0.046). Compared with patients, palliative HCPs gave higher scores for patient emotional-spiritual concerns (77.2% vs. 41.7%, p = 0.02); lower scores for gastrointestinal concerns (p = 0.048); and higher scores for overall function (p = 0.049). Qualitative assessment identified a gap between how patients/informal caregivers vs. palliative HCPs/family physicians regard emotional-spiritual themes, including discussing issues related to death and dying.Significance of resultsThe findings of the present study suggest that exploring a multifaceted cohort of home hospice patients, informal caregivers, palliative HCPs, and family physicians may provide insight on how to reduce communication gaps and address unmet needs of patients, particularly regarding emotional and spiritual concerns.ConclusionsWhile the 4 groups were similar in their scoring of patient QoL-related concerns, there were discrepancies for some concerns (e.g., patient fatigue) and expectations regarding the need to discuss emotional and spiritual concerns, including on death and dying. Educational initiatives with programs providing training to all 4 groups may help bridge this gap, creating a more open and collaborative hospice care environment.
A 4 × 4 Butler matrix with switching/steering beams based on new tunable phase difference couplers
Authors: Benaouf Taleb Mohamed , Hamdoun Abdelaziz , Himdi Mohamed , Lafond Olivier , Ammor Hassan 
Published: April 2024

AbstractBasically, a 4 × 4 Butler matrix (BM) connected to an antenna array allows to have four beams, each oriented in a specific direction depending on the excitation port. In this paper, an almost continuously steerable beam system based on a conventional 4 × 4 BM with adjustable phase shift is presented and demonstrated. Here, varicap diodes are used instead of an additional phase shifter. Under different bias levels applied to the couplers throughout these varicap diodes, an output variable phase difference was obtained. A prototype of the proposed tunable BM integrated with an antenna array operating at 3.5 GHz was fabricated and tested. The experimental results show a good agreement with those simulated. A reflection and isolation coefficient better than −15 dB over the entire desired frequency band and an amplitude imbalance lower than ±1.5 dB were achieved. The measured radiating beam under different DC biasing can be oriented from ±6° to ±18° when port 1 or 4 is excited and oriented from ±32° to ±43° for ports 2 and 3.
The Effects of Fear and Shame in Health Testimonial Videos on Identification and Health Beliefs
Authors: Cohen Jonathan , Atad Erga , Mevorach Tomer 
Published: April 2024

Abstract: Two online experiments (Study 1 N = 310; Study 2 N = 967) using video testimonials manipulated the degree of fear and shame experienced by viewers by varying the degree of risk and stigma associated with the illnesses endured by the protagonists. Results showed that increasing risk and stigma intensified identification, which in turn affected story-consistent beliefs. Trait empathy, expected to increase identification did not predict higher identification. Both studies, using different videos depicting different illnesses, found similar results suggesting a general pattern. Results are discussed in the context of persuasion theory and implications for message design are suggested.
Subsurface Warming of the West Antarctic Continental Shelf Linked to El Niño‐Southern Oscillation
Authors: Huguenin Maurice F. , Holmes Ryan M. , Spence Paul , England Matthew H. 
Published: April 2024

AbstractRecent observations suggest that El Niño–Southern Oscillation (ENSO) impacts basal melting of West Antarctic ice shelves, yet sparse ocean observations limit our understanding of the associated processes. Here we investigate how ENSO events modulate subsurface West Antarctic shelf temperatures using high‐resolution global ocean‐sea ice model simulations. During El Niño, the subsurface shelf warming between 150 m and the shelf bottom can be up to 0.5°C in front of ice shelves. This warming arises from a weaker Amundsen Sea Low (ASL) and weaker coastal easterlies that reduce on‐shelf Ekman transport of cold surface waters, enabling enhanced transport of warm Circumpolar Deep Water (CDW) onto the shelf. A largely opposite response occurs during La Niña, with a stronger ASL and stronger Ekman transport that results in less cross‐shelf CDW transport and cooling in the subsurface. These findings have implications for interpreting basal melting on interannual to decadal time‐scales in West Antarctica.