bluuebunny/crossref_metadata_2025_split huggingface dataset:
Emerging insights into nitrogen assimilation in gymnosperms
Authors: Valderrama-Martín José M. , Ortigosa Francisco , Cantón Francisco R. , Ávila Concepción , Cañas Rafael A. , Cánovas Francisco M. 
Published: April 2023

Abstract
Key message
The current status of molecular regulation of nitrogen assimilation and recent advances made in gymnosperms are reviewed.

Abstract
Gymnosperms are a heterogeneous and ancient group of seed plants that includes conifers, ginkgos, cycads and gnetophytes. Molecular studies on extant gymnosperms have been constrained by some discouraging features for experimental research such as their long life cycles, large sizes, complex megagenomes and abundant phenolic compounds in their woody tissues. However, the development of high-throughput sequencing and refined multiomics technologies in the last few years has allowed to explore the molecular basis of essential processes in this ancient lineage of plants. Nitrogen is one of the main limiting factors determining vascular development and biomass production in woody plants. Therefore, nitrogen uptake, metabolism, storage and recycling are essential processes for fundamental gymnosperm biology. Here, recent progress in the molecular regulation of nitrogen assimilation in gymnosperms is reviewed and some future perspectives on this topic are outlined.
Blow-up of nonnegative solutions of an abstract semilinear heat equation with convex source
Authors: Lenz Daniel , Schmidt Marcel , Zimmermann Ian 
Published: April 2023

AbstractWe give a sufficient condition for non-existence of global nonnegative mild solutions of the Cauchy problem for the semilinear heat equation$$u' = Lu + f(u)$$u′=Lu+f(u)in$$L^p(X, m)$$Lp(X,m)for$$p \in [1,\infty )$$p∈[1,∞), where (X, m) is a$$\sigma $$σ-finite measure space,Lis the infinitesimal generator of a sub-Markovian strongly continuous semigroup of bounded linear operators in$$L^p(X, m)$$Lp(X,m), andfis a strictly increasing, convex, continuous function on$$[0,\infty )$$[0,∞)with$$f(0) = 0$$f(0)=0and$$\int _1^\infty 1/f < \infty $$∫1∞1/f<∞. Since we make no further assumptions on the behaviour of the diffusion, our main result can be seen as being about the competition between the diffusion represented byLand the reaction represented byfin a general setting. We apply our result to Laplacians on manifolds, graphs, and, more generally, metric measure spaces with a heat kernel. In the process, we recover and extend some older as well as recent results in a unified framework.
Natural and artificial OH defect incorporation into fluoride minerals at elevated temperature—a case study of sellaite, villiaumite and fluorite
Authors: Talla Dominik , Beran Anton , Škoda Radek 
Published: April 2023

AbstractThe long-known presence of a sharp OH absorption band in the tetragonal fluoride mineral sellaite, MgF2, inspired us to conduct a detailed study of the OH incorporation modes into this IR-transparent (where IR stands for Infrared) material as well as to search for hydrogen traces in two other IR-translucent halides—villiaumite (NaF) and fluorite (CaF2). Among these three phases, sellaite is the only one to incorporate ‘intrinsic’ OH groups, most commonly as O–H∙∙∙F defects oriented nearly perpendicular to the c-axis along the shortest edge of the constituent MgF6 polyhedra, in analogy with the isostructural mineral rutile, TiO2. Another defect type, seen only scarcely in untreated natural material, develops when subjecting sellaite to temperatures above 900 °C. It involves an O–H∙∙∙O cluster along the 2.802 Å edge of the original MgF6 dipyramid, as fluorine atoms are progressively expelled from the structure, being replaced by O2- anions. This is corroborated by the appearance of spectral absorption features typical for brucite (Mg(OH)2) and ultimately periclase (MgO), the presence of which could be proven via powder diffraction of the heat-treated material. Except for a ‘dubious’ peak most probably caused by included phases, neither villiaumite (NaF) nor fluorite (CaF2) showed any presence of ‘intrinsic’ OH defects. They do however decompose along a similar route into the respective oxide and hydroxide phases at high temperature. This thermal decomposition of the studied halide phases is accompanied by the emission of gaseous (HF)n species at temperatures well below their established melting point - a subject which seems to be quite overlooked.
Prevention and health promotion regarding sexually transmitted infections (STI) among university students in Germany
Authors: Voegele Pascal , Polenz Wolf 
Published: April 2023

Abstract
Aim
University students are sexually active, and the sexual risk behavior of this group is higher than that of the general population. The prevention of sexually transmitted infections (STIs) emphasizes the need for comprehensive knowledge about behaviors for STI protection and the actual realization of these behaviors.

Subject and methods
First, an online questionnaire was developed to record the knowledge and realization of STI-protective behaviors among students at Hamburg University of Applied Sciences (HUAS) to conduct quantitative cross-sectional interviews. The sample included 1532 students. Specific aspects of the interview are based on lower response rates. The correlations were then tested by Spearman’s rank correlation coefficient and Pearson’s chi-squared test.

Results
Significant positive correlations were identified between the self-efficacy (SE) and the use of condoms, STI vaccinations, STI tests, and HIV pre-exposure prophylaxis (PrEP). Significant negative correlations were suggested between substance use and the use of condoms and the use of PrEP and the intake of antiretroviral therapy (ART). Significant positive correlations were identified between the knowledge about STI-protective behaviors and the usage of STI-protective vaccinations, STI tests, and ART. Significant positive correlations were identified between the experiences in terms of STIs and the knowledge about STI-protective vaccinations, use of PrEP, and use of ART.

Conclusion
Moreover, the results indicate that students with a divergent sexual identity have a higher level of knowledge about STI-protective behaviors. The sexual health of university students should be improved by preventive measures to improve the sexual health of individual students and their social environments.
How to counteract the lack of donor tissue in cardiac surgery? Initial experiences with a newly established homograft procurement program
Authors: Schmiady Martin O. , Jashari Ramadan , Lenherr Renato , Regenscheit Stefan , Hitendu Dave , Wendt Martin , Schiess Stefanie , Schweiger Martin , Hofmann Michael , Sromicki Juri , Flammer Andreas , Wilhelm Markus J. , Cesnjevar Robert , Carrel Thierry , Vogt Paul R. , Mestres Carlos A. 
Published: April 2023

AbstractHomograft heart valves may have significant advantages and are preferred for the repair of congenital valve malformations, especially in young women of childbearing age, athletes and in patients with active endocarditis. A growing problem, however, is the mismatch between tissue donation and the increasing demand. The aim of this paper is to describe the initiation process of a homograft procurement program to attenuate the shortage of organs. A comprehensive description of the infrastructure and procedural steps required to initiate a cardiac and vascular tissue donation program combined with a prospective follow-up of all homografts explanted at our institution. Between January 2020 and May 2022, 28 hearts and 12 pulmonary bifurcations were harvested at our institution and delivered to the European homograft bank. Twenty-seven valves (19 pulmonary valves, 8 aortic valves) were processed and allocated for implantation. The reasons for discarding a graft were either contamination (n = 14), or morphology (n = 13) or leaflet damage (n = 2). Five homografts (3 PV, 2 AV) have been cryopreserved and stored while awaiting allocation. One pulmonary homograft with a leaflet cut was retrieved by bicuspidization technique and awaits allocation, as a highly requested small diameter graft. The implementation of a tissue donation program in cooperation with a homograft bank can be achieved with reasonable additional efforts at a transplant center with an in-house cardiac surgery department. Challenging situations with a potential risk of tissue injury during procurement include re-operation, harvesting by a non-specialist surgeon and prior central cannulation for mechanical circulatory support.
Diabetes mellitus, prediabetes and the risk of Parkinson’s disease: a systematic review and meta-analysis of 15 cohort studies with 29.9 million participants and 86,345 cases
Authors: Aune Dagfinn , Schlesinger Sabrina , Mahamat-Saleh Yahya , Zheng Bang , Udeh-Momoh Chinedu T. , Middleton Lefkos T. 
Published: April 2023

AbstractA diagnosis of diabetes mellitus and prediabetes has been associated with increased risk of Parkinson’s disease (PD) in several studies, but results have not been entirely consistent. We conducted a systematic review and meta-analysis of cohort studies on diabetes mellitus, prediabetes and the risk of PD to provide an up-to-date assessment of the evidence. PubMed and Embase databases were searched for relevant studies up to 6th of February 2022. Cohort studies reporting adjusted relative risk (RR) estimates and 95% confidence intervals (CIs) for the association between diabetes, prediabetes and Parkinson’s disease were included. Summary RRs (95% CIs) were calculated using a random effects model. Fifteen cohort studies (29.9 million participants, 86,345 cases) were included in the meta-analysis. The summary RR (95% CI) of PD for persons with diabetes compared to persons without diabetes was 1.27 (1.20–1.35, I2 = 82%). There was no indication of publication bias, based on Egger’s test (p = 0.41), Begg’s test (p = 0.99), and inspection of the funnel plot. The association was consistent across geographic regions, by sex, and across several other subgroup and sensitivity analyses. There was some suggestion of a stronger association for diabetes patients reporting diabetes complications than for diabetes patients without complications (RR = 1.54, 1.32–1.80 [n = 3] vs. 1.26, 1.16–1.38 [n = 3]), vs. those without diabetes (pheterogeneity=0.18). The summary RR for prediabetes was 1.04 (95% CI: 1.02–1.07, I2 = 0%, n = 2). Our results suggest that patients with diabetes have a 27% increased relative risk of developing PD compared to persons without diabetes, and persons with prediabetes have a 4% increase in RR compared to persons with normal blood glucose. Further studies are warranted to clarify the specific role age of onset or duration of diabetes, diabetic complications, glycaemic level and its long-term variability and management may play in relation to PD risk.
Mobile application e-grocery retail adoption challenges and coping strategies: a South African small and medium enterprises’ perspective
Authors: Mkansi Marcia , Nsakanda Aaron Luntala 
Published: April 2023

Abstract
This paper explores how small and medium-sized e-grocery mobile application retailers evolving within the geographical context of South Africa and operating in the urban, township, and rural areas respond to theoretically and emerging field-based e-business and e-grocery adoption challenges, respectively. The study used semi-structured qualitative interviews to explore the coping strategies of e-grocery mobile application retailers to mitigate technological, organizational, and environmental (TOE) adoption challenges. The significance of small grocery adoption strategies related to context informs e-grocery adoption from the evidence generated in other small e-grocers and for the superior grade of TOE (or theoretical) knowledge sought from the inevitable evolving mobile application and digital grocery markets. The findings reveal that specialist skills and unified team production are crucial conduits for lowering the TOE barriers to e-business and e-grocery adoption. They also reveal the interconnected resource orchestration, shared value, and social inclusion strategies used to mitigate various e-business and e-grocery challenges.
Examining linkages among multiple sustainable development outcomes: does the productive safety net program increase on-farm agrobiodiversity?
Authors: Kozicka M. , Gotor E. , Pagnani T. , Occelli M. , Caracciolo F. 
Published: April 2023

AbstractIn Ethiopia, on-farm agrobiodiversity and the Productive Safety Net Program (PSNP) play a key role in building smallholders’ resilience. However, the impact of PSNP on on-farm agrobiodiversity is not yet well investigated. In this paper, we develop an analytical framework that links PSNP participation to on-farm agrobiodiversity. Both diverse farming systems and PSNP require labour inputs while providing income stabilization, which might result in a negative relationship between the two. Conversely, higher income from PSNP might allow farmers to increase their long-term on-farm investments, as opposed to the strategies oriented toward the highest immediate profit or calorie intake outcome. We base our empirical analysis on the World Bank’s Ethiopian Socioeconomic Survey, a panel dataset encompassing nearly 3000 respondents and a Tobit model, based on Difference-in-Difference and the Propensity-Score Matching methods. We find that Ethiopia’s PSNP has a negative impact on farm labour input, both in terms of labour intensity and duration. Furthermore, our results show that participation in the program is associated, on average, with lower on-farm crop diversity. We conclude that the PSNP participation may be crowding-out production stabilizing farming activities, such as intercropping or cover cropping, that are more labour intensive. Our findings call for embedding tools in the new phase of the PSNP (2021–2025) that could incentivise on-farm resilience-oriented investments, in particular leading to higher crop diversification.
Credibility in second-price auctions: an experimental test
Authors: Dianat Ahrash , Freer Mikhail 
Published: April 2023

AbstractWe provide the first direct test of how the credibility of an auction format affects bidding behavior and final outcomes. To do so, we conduct a series of laboratory experiments where the role of the seller is played by a human subject who receives the revenue from the auction and who (depending on the treatment) has agency to determine the outcome of the auction. Contrary to theoretical predictions, we find that the non-credible second-price auction fails to converge to the first-price auction. We provide a behavioral explanation for our results based on sellers’ aversion to rule-breaking, which is confirmed by an additional experiment.
Raman spectroscopy in pure and doped zinc ferrites nanoparticles
Authors: Albini B. , Restelli S. , Ambrosetti M. , Bini M. , D’Amico F. , Mozzati M. C. , Galinetto P. 
Published: April 2023

AbstractRaman spectroscopy was applied on nanostructured ZnFe2O4 system in order to correlate its structural, chemical, and vibrational properties to the functional behaviour, in view of the high sensitivity of the Raman probe to the cationic order in iron oxides. In particular we investigated pure and Ga/Mg doped zinc ferrite nanoparticles synthesised by co-precipitation route by means of Raman spectroscopy with a particular focus on the correlation between their structural and magnetic properties. We firstly studied the homogeneity of the samples at the micrometer scale and their stability under laser irradiation disregarding the presence of spurious iron oxides in favour of a highly defective external shell of the nanoparticles. This hypothesis was corroborated by varying the incident laser wavelength therefore changing the investigated volume. Furthermore, we estimated the inversion degree of the spinel structure finding good agreements with the trend of the magnetic features. All the evidence found through Raman spectroscopy are supported by the results obtained with X-Ray Powder Diffraction, Electron Paramagnetic Resonance and SQUID magnetometry.
Image-Based Sexual Abuse Associated Factors: A Systematic Review
Authors: Paradiso Maria Noemi , Rollè Luca , Trombetta Tommaso 
Published: April 2023

Abstract
Purpose
Image-Based Sexual Abuse (IBSA) is a recently studied form of violence and abuse perpetrated using technology. This systematic review aims to examine and systematize studies exploring factors associated with IBSA (e.g., victimization, perpetration, and propensity to perpetrate).

Method
Following the Preferred Reporting Items for Systematic Review and Meta-Analysis (PRISMA) statement, 17 articles were included.

Results
The results of this study highlighted conceptual and methodological limitations in the literature on IBSA. Aside from these limitations, this systematic review identified factors associated with IBSA, focusing on four macro-areas: victimization, perpetration, propensity to perpetrate IBSA, and IBSA implications. The results demonstrated the role of psychological, relational, and social variables, although the effect sizes observed in the quantitative studies were small or in few cases moderate.

Conclusions
These results suggest further research should be carried out to explore the multidimensionality of IBSA and its associated factors, which may assist in guiding interventions to promote preventive and rehabilitative methods to lower the prevalence of this crime and its consequences.
Potential impact of property management on the market value of dwellings in multi-owned housing
Authors: Muczyński Andrzej 
Published: April 2023

AbstractThe expanding role of property management services and the increasing share of multi-owned housing in many housing markets raises issues concerning the impact of such services on property value in this sector. The presented study investigated the potential impact of property management on the market value of dwellings in multi-owned housing developments. This impact was identified based on estimated implicit values of the extracted common property attributes dependent on property management services. An original research methodology tailored to the institutional arrangement in multi-owned housing developments was used, involving the estimation of hedonic regression models. Empirical research was conducted on representative samples of multi-owned housing developments in the housing market of the city of Olsztyn, Poland. The results showed that common property attributes such as building condition, building accessibility, cleanliness and orderliness, and land development significantly influenced dwelling prices and thus their market value. In extreme cases, the cumulative potential impact of property management services estimated on this basis can reach up to ca. 30% of the dwellings’ value. These findings have far-reaching policy and practical implications for urban development policies, including the built environment, land use and local housing, as well as for housing market investors and developers, homeowners associations, dwelling owners and property managers. Hence, it is recommended to expand research on this topic to other housing markets functioning in different institutional arrangements.
Evaluating Mentors in Violence Prevention: A Longitudinal, Multilevel Assessment of Outcome Changes
Authors: Pagani Stefania , Hunter Simon C. , Lawrence David , Elliott Mark A. 
Published: April 2023

AbstractThere is a need to increase understanding of the effectiveness of bystander programmes targeting gender-based violence in the United Kingdom. There is also a need to utilise a robust theoretical models of decision-making while doing so. Changes were examined in bystanders’ attitudes, beliefs, motivations towards intervening, and intervention behavior in situations of gender-based violence. To achieve this, a quantitative examination of Mentors in Violence Prevention was conducted. There were 1396 participants (50% female, 50% male) who were aged 11 to 14 years old (M = 12.25, SD = 0.84) attending high school at the first time point. Participants were attending 17 schools (53% Mentors in Violence Prevention and 47% control) in Scotland. Outcome variables were assessed approximately one year apart using questionnaires. Multilevel linear regressions revealed that Mentors in Violence Prevention did not change outcomes reflecting bystanders’ attitudes, beliefs, motivations towards intervening, or intervention behavior in gender-based violence. Discrepancies between the current findings and those of other evaluations may be due to other studies including small numbers of schools that may be more motivated to implement the program. This study also identified two key issues that need to be addressed at stakeholder level before concluding that Mentors in Violence Prevention is ineffective at targeting gender-based violence. That the program has moved towards a more gender-neutral approach in the United Kingdom could explain the null results of this study. Furthermore, the current findings could be attributed to a failure to adequately address the theoretical model underpinning the program in practice.
Readability and Clarity of Individual Pension Product Contracts
Authors: Hadryan Milena , Rutecka-Góra Joanna 
Published: April 2023

AbstractThe study analyses the readability and clarity of economic specialised texts on supplementary individual pensions. The research includes agreements on individual pension products available on the Polish market at the beginning of 2017. The level of comprehensibility of language has been assessed using the “Jasnopis” application, based, among others, on the FOG index, while the structure of the content of the agreements has been assessed by an expert linguist (the expert linguist is one of the authors of this and a number of other publications on clear and understandable texts). In addition, one of the texts was subject to a survey, the so-called cloze text, which provided more accurate information about readability for a specific reader group. The results obtained allow the conclusion that the language of agreements on individual pension products is very difficult and their understanding requires higher education or expertise in the field of finance.