bluuebunny/crossref_metadata_2025 huggingface dataset:
CO2 dynamics and heterogeneity in a cave atmosphere: role of ventilation patterns and airflow pathways
Authors: Kukuljan Lovel , Gabrovšek Franci , Covington Matthew D. , Johnston Vanessa E.
Published: July 2021

Understanding the dynamics and distribution of CO2 in the subsurface atmosphere of carbonate karst massifs provides important insights into dissolution and precipitation processes, the role of karst systems in the global carbon cycle, and the use of speleothems for paleoclimate reconstructions. We discuss long-term microclimatic observations in a passage of Postojna Cave, Slovenia, focusing on high spatial and temporal variations of pCO2. We show (1) that the airflow through the massif is determined by the combined action of the chimney effect and external winds and (2) that the relationship between the direction of the airflow, the geometry of the airflow pathways, and the position of the observation point explains the observed variations of pCO2. Namely, in the terminal chamber of the passage, the pCO2 is low and uniform during updraft, when outside air flows to the site through a system of large open galleries. When the airflow reverses direction to downdraft, the chamber is fed by inlets with diverse flow rates and pCO2, which enter via small conduits and fractures embedded in a CO2-rich vadose zone. If the spatial distribution of inlets and outlets produces minimal mixing between low and high pCO2 inflows, high and persistent gradients in pCO2 are formed. Such is the case in the chamber, where vertical gradients of up to 1000 ppm/m are observed during downdraft. The results presented in this work provide new insights into the dynamics and composition of the subsurface atmosphere and demonstrate the importance of long-term and spatially distributed observations.
Proline metabolism and redox; maintaining a balance in health and disease
Authors: Vettore Lisa A. , Westbrook Rebecca L. , Tennant Daniel A.
Published: July 2021

Proline is a non-essential amino acid with key roles in protein structure/function and maintenance of cellular redox homeostasis. It is available from dietary sources, generated de novo within cells, and released from protein structures; a noteworthy source being collagen. Its catabolism within cells can generate ATP and reactive oxygen species (ROS). Recent findings suggest that proline biosynthesis and catabolism are essential processes in disease; not only due to the role in new protein synthesis as part of pathogenic processes but also due to the impact of proline metabolism on the wider metabolic network through its significant role in redox homeostasis. This is particularly clear in cancer proliferation and metastatic outgrowth. Nevertheless, the precise identity of the drivers of cellular proline catabolism and biosynthesis, and the overall cost of maintaining appropriate balance is not currently known. In this review, we explore the major drivers of proline availability and consumption at a local and systemic level with a focus on cancer. Unraveling the main factors influencing proline metabolism in normal physiology and disease will shed light on new effective treatment strategies.
How geographic and climatic factors affect the adaptation of Douglas-fir provenances to the temperate continental climate zone in Europe
Authors: Niemczyk Marzena , Chmura Daniel J. , Socha Jarosław , Wojda Tomasz , Mroczek Piotr , Gil Wojciech , Thomas Barb R.
Published: July 2021

The contribution of Douglas-fir (Df) to European forests is likely to increase as the species is a potential adaptation option to climate change. In this study, we investigated growth and survival of Df seed sources to fill a knowledge gap regarding recommendations for the future use of Df provenances in Poland. Our experimental test site represents the most continental climate among all Df trials installed in the IUFRO 1966–67 test series in Europe. At this unique single site, we evaluated the performance of 46 Df provenances from North America, and nine local landraces of unknown origin. Repeated measurements of tree diameter, height, and volume were analysed, to age 48, representing integrated responses to geographic and climatic conditions. Significant variation in survival and productivity-related traits were found, with the interior Df provenances performing best, in contrast to previous European reports. The higher survivability and volume of the interior provenances resulted from their superior frost resistance. The low precipitation seasonality at the location of seed origin provided an additional advantage to the trees at the test site. Geographic and climatic factors of seed origin explained most of the variation in productivity (77 and 64%, respectively). The tested landraces exhibited diverse performance, implying that naturalized local seed sources in Poland need improvement and perhaps enrichment with new genetic material from North America, while considering geography and climate. Assisted migration programs should consider the limitations imposed by both frost and drought events in guiding future Df selections for continental climates. Further field testing, early greenhouse screening and DNA testing are also recommended.
Taut contact hyperbolas on three-manifolds
Authors: Perrone Domenico
Published: July 2021

In this paper, we introduce the notion of taut contact hyperbola on three-manifolds. It is the hyperbolic analogue of the taut contact circle notion introduced by Geiges and Gonzalo (Invent. Math., 121: 147–209, 1995), (J. Differ. Geom., 46: 236–286, 1997). Then, we characterize and study this notion, exhibiting several examples, and emphasizing differences and analogies between taut contact hyperbolas and taut contact circles. Moreover, we show that taut contact hyperbolas are related to some classic notions existing in the literature. In particular, it is related to the notion of conformally Anosov flow, to the critical point condition for the Chern–Hamilton energy functional and to the generalized Finsler structures introduced by R. Bryant. Moreover, taut contact hyperbolas are related to the bi-contact metric structures introduced in D. Perrone (Ann. Global Anal. Geom., 52: 213–235, 2017).
„Die denken immer, man ist ein Killer“ – Reaktionsweisen von Schlachthofarbeitern auf moralische Stigmatisierung
Authors: Sebastian Marcel
Published: July 2021

Schlachthofarbeit hat einen schlechten Ruf und viele Schlachter erfahren moralische Stigmatisierung, obwohl Fleischkonsum die dominante Ernährungsform westlicher Gesellschaften ist. Moralische Stigmatisierung von Schlachthofarbeitern wurde bisher nicht systematisch untersucht. Der Artikel beantwortet die Forschungsfragen, welche Strategien des Umgangs mit moralischer Stigmatisierung sich unter Schlachthofarbeitern finden und wie sie sich zu hegemonialen Erzählungen zu ihrem Beruf verhalten. Der theoretische Rahmen des Artikels basiert auf soziologischen Theorien zu Kultur, Stigma unddirty work. Zur Beantwortung der Forschungsfragen wurden 13 problemzentrierte Interviews mit Arbeitern aus sechs deutschen Schlachthöfen mittels Qualitativer Inhaltsanalyse ausgewertet. Die Analyse ergab, dass Schlachter auf moralische Stigmatisierung reagieren, indem sie diejenigen kulturellen Ideen, die der Stigmatisierung zugrunde liegen, infrage stellen und für die Gültigkeit der eigenen kulturellen Ideen über „Schlachttiere“ argumentieren. Ferner nutzen die interviewten Schlachthofarbeiter starre Gruppengrenzen, um die Autorität externer Akteure zur Urteilsbildung über Schlachthofarbeit zu delegitimieren. Der Artikel ist innovativ, da er erstmals systematisch die Reaktionsweisen von Schlachthofarbeitern auf moralische Stigmatisierung untersucht.
Characterization of an Axial-Injection Plasma Spray Torch
Authors: Zimmermann Stephan , Mauer Georg , Rauwald Karl-Heinz , Schein Jochen
Published: July 2021

The Axial III™ torch is a multiple-arc plasma generator with a set of three single cathode–anode units, which is still of significant importance, especially in the field of suspension plasma spraying. The division of the plasma generator into three spatially separated systems allows for central feedstock injection with improved deposition rates and efficiencies. In this work, several diagnostic methods were applied to characterize the plasma jet of an Axial III™ spray torch to further the understanding of this spray system. One important result was that the plasma temperature in the jet exhibits a triple distribution with three straight lobes arranged around the jet axis. As with every plasma torch, the total plasma power is subject to fast temporal variations. Power variations were clearly seen in the plasma jet even though it could have been anticipated that the triple jet characteristics and the natural fluctuations of the arcs generated by the three single cathode–anode units would be less pronounced after merging the three plasma streams. Unaffected by this it is nevertheless likely that the axially injected feedstock particles are caged effectively in the core of the plasma jet. Hence, the total electrical torch power and the uniformity of the single unit’s powers must be monitored to realize possible degradation and asymmetries in the plasma temperature distribution, which may influence deposition parameters.
Spatially differentiated changes in regional climate and underlying drivers in southwestern China
Authors: Wang Meng , Jiang Chao , Sun Osbert Jianxin
Published: July 2021

The climate in Southwest China are predominantly under the influences of three contrasting climate systems, namely the East Asian monsoon, the South Asian monsoon, and the westerlies. However, it is unclear if the diversified climate systems, in combination with the complex terrain and varying vegetation types, would result in contrasting patterns of changes in climate across the region. Based on the CRU TS data for the period 1901−2017, we examined the spatiotemporal characteristics of the regional climate, and identified types of climate change patterns and drivers. Overall, the region experienced significant increases in annual mean temperature during 1901−2017, with occurrence of a significant turning point in 1954 for a more pronounced warming (0.16 °C/10 a). The annual precipitation fluctuated greatly over the study period without apparent trend, albeit the occurrence of a significant turning point in 1928 for a slight increase in the later period (1.19 mm/10 a). Spatially the multi-year averages of selective climate variables during 1901–2017 displayed a trend of decreases from southeast to northwest, but with increasing variability. We identified five major climate change types across the study region, including warmer (T+), drier (P−), warmer-drier (T+P−), warmer-wetter (T+P+), and no significant changes (NSC). The type T+P+ mainly occurred in the western parts over the plateau sub-frigid semiarid ecozone (77.0%) and the plateau sub-frigid semihumid ecozone (19.9%). The central parts of the region are characterized by the type T+, corresponding to six ecozones, including the mid-subtropical humid ecozone (33.1%), the plateau temperate humid-semihumid ecozone (28.8%), the plateau sub-rigid semihumid ecozone (9.5%), the southern subtropical humid ecozone (8.1%), the plateau sub-frigid arid ecozone (7.3%), and the plateau temperate semiarid ecozone (6.6%). No significant change in climate was detected for the eastern parts over the mid-subtropical humid ecozone (67.3%), the plateau temperate humid and semihumid ecozone (19.5%) and the plateau sub-frigid semihumid ecozone (8.8%). The types P− and T+P− together accounted for less than 5% of the entire study region, which predominantly occurred in central Yunnan-Guizhou Plateau and south of the southeastern Xizang, corresponding predominantly to the mid-subtropical humid ecozone. Across the region and within the zonal climate change types, vegetation and topography both played a significant role in determining the climate variability and magnitude of changes. Our results suggest that the southwestern China experienced intensified influences of the southeasterly monsoon and the southerly monsoon in the regional climate, while the westerly alpine influences subsided; topography and vegetation affected the magnitudes of the directional changes in climate at a local scale.
Completeness: From Husserl to Carnap
Authors: Aranda Víctor
Published: July 2021

In hisDoppelvortrag(1901), Edmund Husserl introduced two concepts of “definiteness” which have been interpreted as a vindication of his role in the history of completeness. Some commentators defended that the meaning of these notions should be understood as categoricity, while other scholars believed that it is closer to syntactic completeness. A detailed study of the early twentieth-century axiomatics and Husserl’sDoppelvortragshows, however, that many concepts of completeness were conflated as equivalent. Although “absolute definiteness” was principally an attempt to characterize non-extendible manifolds and axiom systems (different from Hilbert’s axiom of completeness), an absolutely definite theory has a unique model and, thus, it is non-forkable and semantically complete (decidable). Non-forkability and decidability were formally delimited by Fraenkel and Carnap almost three decades later and, in fact, they mentioned Husserl as precursor of the latter. Therefore, this paper contributes to a reassessment of Husserl’s place in the history of logic.
Towards a Standard Approach to Assess Tibial Bone Loss Following Total Knee Arthroplasty
Authors: Anijs Thomas , Kouwert Ilse , Verdonschot Nico , Janssen Dennis
Published: July 2021

Long-term implant failure in the form of aseptic loosening and periprosthetic fracture is the most common cause of revision procedures in total knee arthroplasty (TKA). While early loosening can often be attributed to failure of primary fixation, late implant failure could be associated with loss of fixation secondary to bone resorption, as a result of stress shielding in the proximal tibia. This current review study was performed to identify the clinical effects of different implant-, patient-, and surgery-related biomechanical factors on TKA-related tibial bone loss in clinical reality. Implant-related factors considered were the fixation method, and the implant type, geometry, and stiffness. In terms of patient characteristics, the effects of age, sex, knee alignment, bone density, body weight, and activity level were analyzed. The clinical literature on these topics mostly concerned longitudinal radiographic studies investigating the effect of a single factor on changes in the proximal tibia over time using bone densitometry. Implant stiffness, implant geometry and knee alignment were the only factors consistently found to affect regional bone density changes over time. Each clinical study used its own specific study design, with different definitions used for the baseline density, time points of baseline and follow-up measurements, and regions of interest. Due to the differences in study design, direct comparison between the clinical impact of different biomechanical factors was not possible. Based on the findings over the densitometry studies, a standardized guideline was proposed to allow reliable comparison between consistently reported outcome of future radiographic TKA studies.
Cognitive interference processing in adults with childhood craniopharyngioma using functional magnetic resonance imaging
Authors: Svärd Daniel , Follin Cecilia , Fjalldal Sigridur , Hellerstedt Robin , Mannfolk Peter , Mårtensson Johan , Sundgren Pia , Erfurth Eva Marie
Published: July 2021

Purpose

To assess cognitive interference processing in adults with childhood craniopharyngioma (CP), with and without hypothalamic injury, respectively, in terms of behavioral performance and functional magnetic resonance imaging (fMRI) activity, using the multi-source interference task (MSIT).

Methods

Twenty-eight CP patients (median age 34.5 [29.0–39.5] years) were investigated at median 20.5 (16.3–28.8) years after treatment with surgical resection and in some cases additional radiotherapy (n = 10) and compared to 29 matched controls (median age 37.0 [32.5–42.0] years). The subjects performed the MSIT during fMRI acquisition and behavioral performance in terms of response times (ms) and accuracy performance (%) were recorded.

Results

The MSIT activated the cingulo-fronto-parietal (CFP) attention network in both CP patients and controls. No differences were found in behavioral performance nor fMRI activity between CP patients (interference effect 333.9 [287.3–367.1] ms and 3.1 [1.6–5.6]%, respectively) and controls (309.1 [276.4–361.0] ms and 2.6 [1.6–4.9]%). No differences were found in behavioral performance nor fMRI activity between the two subgroups with (332.0 [283.6–353.4] ms and 4.2 [2.3–5.7]%, respectively) and without hypothalamic injury (355.7 [293.7–388.7] ms and 2.1 [1.0–5.2]%, respectively), respectively, and controls.

Conclusion

Adults with childhood CP performed cognitive interference processing equally well as controls and demonstrated no compensatory fMRI activity in the CFP attention network compared to controls. This was also true for the two subgroups with and without hypothalamic injury. The results can be useful to better characterize this condition, and to optimize treatment and support for these individuals.
Longitudinal Study of the Psychosocial Effects of Political Participation by Children: the ‘Ágora Infantil’ Programme
Authors: Albornoz-Manyoma Nazly Guiselly , García-Leiva Patricia , Palacios-Gálvez María Soledad
Published: July 2021

The objective of this paper is to evaluate the effect of participation-based democratic innovations on psychological empowerment and group identification of children. To do so, it analyses the impact on the participants of a participatory democracy programme for groups of schoolchildren, ‘Ágora Infantil’ (AI). Evaluation is performed via a longitudinal study carried out over two years, with pre and post quantitative measurements of the target and control group. The sample consisted of 182 boys and girls. The data were gathered via a questionnaire made up of items prepared by a group of experts for the current study based on Zimmerman’s empowerment theory (American Journal of Community Psychology, 23(5), 581–599, 1995, 2000). Items were also taken from other authors, for example affective links, which were used as an indicator to measure group identification (Gaviria et al. International Journal of Social Psychology, 30(3), 531–562, 2015). The results show that institutional political participation generates positive changes in the participants. More specifically, the children improved in the two components of psychological empowerment (intrapersonal and interactional), with an intensification of relationship links with the group (the class). These findings demonstrate the political and psychosocial importance of these participatory innovations being introduced and their medium-term effects.
Efficacy of a Ready-to-Drink Gelled Water and of a Thickening Powder in Patients with Oropharyngeal Dysphagia: a Crossover Randomized Study
Authors: Salle Jean-Yves , Tchalla Achille , Thirion Remy , Offret Annick , Dussaulx Laurence , Trivin Florence , Gayot Caroline , Fayemendy Philippe , Jésus Pierre , Bonhomme Cécile , Hazart Etienne , Baudry Charlotte , Desport Jean-Claude
Published: July 2021

Management of oropharyngeal dysphagia (OD) is mainly based on modifying liquid viscosity and solid consistency in order to preserve oral feeding while avoiding unsafe swallowing. Adding thickening powders (TP) to water is the most common practice in patients suffering from OD to liquids, but ready-to-use gelled waters (RGW) can also be proposed. The main objective of this study was to assess the efficacy of a RGW and a TP on swallowing in hospitalized patients with different OD etiologies. This open, crossover, multicenter trial recruited thirty hospitalized patients with OD to liquids, confirmed by positive 3-ounce water test or positive Practical Aspiration Screening Scheme test. The patient’s ability to swallow 120 g of a RGW (IDDSI level 4) and a drink prepared with TP (nectar viscosity; NTP, 291 cP, IDDSI level 2; or if necessary, honey; HTP, 769 cP, IDDSI level 3) was evaluated in a random order at 1- to 3-day intervals. The main criterion was the efficacy of each product, defined as the proportion of patients who successfully swallowed without immediate reflexive cough. The RGW and TP were successfully swallowed in respectively 93.3% (95% CI: 77.9–99.2) and 82.8% (95% CI: 64.2–94.2) of patients with different dysphagia etiologies (stroke, neurodegenerative diseases, or aging) and unable to swallow thin water. Taste and texture of both study products were well appreciated by patients, with a preference for the RGW over TP. Therefore, the use of these thickened products could be part of the therapeutic strategy for patients with OD to liquids.
Research on the impact of ship traffic flow on the restricted channel segment of the middle Yangtze River based on traffic wave theory
Authors: Liu Ting , Lodewijks Gabriel
Published: July 2021

On the basis of the influence of dry season on ship traffic flow, the gathering and dissipating process of ship traffic flow was researched with Greenshields linear flow—density relationship model, the intrinsic relationship between the ship traffic congestion state and traffic wave in the unclosed restricted channel segment was emphatically explored when the ship traffic flow in a tributary channel inflows, and the influence law of multiple traffic waves on the ship traffic flow characteristics in unclosed restricted segment is revealed. On this basis, the expressions of traffic wave speed and direction, dissipation time of queued ships and the number of ships affected were provided, and combined with Monte Carlo method, the ship traffic flow simulation model in the restricted channel segment was built. The simulation results show that in closed restricted channel segment the dissipation time of ships queued is mainly related to the ship traffic flow rate of segments A and C, and the total number of ships affected to the ship traffic flow rate of segment A. And in unclosed restricted channel segment, the dissipation time and the total number of ships affected are also determined by the meeting time of the traffic waves in addition to the ship traffic flow rate of segments. The research results can provide the theoretical support for further studying the ship traffic flow in unclosed restricted channel segment with multiple tributaries

Article Highlights

The inflow of tributaries' ship traffic flows has an obvious impact on the traffic conditions in the unenclosed restricted
channel segment.

The interaction and influence between multiple ship traffic waves and the mechanism of generating new traffic waves are
explained.

The expression of both dissipation time of queued ships and the total number of ships affected in the closed and unclosed
restricted channel segment are given.
Mechanism of interactions between α-conotoxin RegIIA and carbohydrates at the human α3β4 nicotinic acetylcholine receptor
Authors: Zheng Meiling , Tae Han-Shen , Xue Liang , Jiang Tao , Yu Rilei
Published: July 2021

Conotoxins are marine peptide toxins from marine cone snails. The α-conotoxin RegIIA can selectively act on human (h) α3β4 nicotinic acetylcholine receptor (nAChR), and is an important lead for drug development. The high-resolution cryo-electron microscopy structure of the α3β4 nAChR demonstrates several carbohydrates are located near the orthosteric binding sites, which may affect α-conotoxin binding. Oligosaccharide chains can modify the physical and chemical properties of proteins by changing the conformation, hydrophobicity, quality and size of the protein. The purpose of this study is to explore the effect of oligosaccharide chains on the binding modes and activities of RegIIA and its derivatives at hα3β4 nAChRs. Through computational simulations, we designed and synthesized RegIIA mutants at position 14 to explore the importance of residue H14 to the activity of the peptide. Molecular dynamics simulations suggest that the oligosaccharide chains affect the binding of RegIIA at the hα3β4 nAChR through direct interactions with H14 and by affecting the C-loop conformation of the binding sites. Electrophysiology studies on H14 analogues suggest that in addition to forming direct interactions with the carbohydrates, the residue might play an important role in maintaining the conformation of the peptide. Overall, this study further clarifies the structure–activity relationship of α-conotoxin RegIIA at the hα3β4 nAChR and, also provides important experimental and theoretical basis for the development of new peptide drugs.
Immune Deficiency Does Not Increase Inflatable Penile Prosthesis Reoperation Rates
Authors: Gaffney Christopher D. , Fainberg Jonathan , Punjani Nahid , Aboukhshaba Ahmad , Pierce Hudson , Patel Neal , Zheng Xinyan , Sun Tianyi , Sedrakyan Art , Kashanian James A.
Published: July 2021

INTRODUCTION

Immunocompromised patients are postulated to have higher rates of post-operative infection. We sought to determine if inflatable penile prosthesis (IPP) reoperation rates (due to infection, erosion, device malfunction or patient dissatisfaction) are higher among immunocompromised men.

Methods

We analyzed men who underwent initial IPP insertion from 2000 to 2016 in the New York Statewide Planning and Research Cooperative System database. Immunocompromised patients were propensity-score matched in a 1:3 fashion with immunocompetent patients. We estimated and compared reoperation rates (including removal, reoperation due to infection, revision, or replacement of an IPP after an index procedure) at 30 days, 90 days, 1 year and 3 years of follow up between immunocompromised men and controls by performing a Kaplan Meier analysis and Log-rank tests. Cox proportional hazards models were built to examine the overall association between immune deficient status and the risk of reoperation.

Main Outcome Measure

Reoperation rate and time to reoperation after index IPP placement.

RESULTS

A total of 245 immunocompromised patients who received an initial IPP between 2000 and 2016 were identified. After propensity score matching, we analyzed 235 immunocompromised men and 705 controls. There was no difference in overall reoperation rates between immunocompromised men and controls within any time period assessed (30 days, 90 days, 1 year, or 3 years). In our Cox proportional hazards model, the hazards of overall reoperation, removal, or revision/replacement (HR 1.11 [95% CI 0.74–1.67], HR 1.58 [95% CI 0.90–2.79)], and HR 0.83 [95% CI 0.47–1.45], respectively) were not significant different between immunocompromised men and controls. Reoperation due to infection was also not significantly different between immunocompromised and immunocompetent men (HR 2.06 [95% CI 0.97–4.40]).

Strengths & Limitations

This study is strengthened by its size as the largest cohort of immunocompromised men treated with IPP to date in the literature, but is limited by the retrospective nature of the database which may introduce selection bias and by the low event rate for IPP reoperation.

CONCLUSIONS

Reoperation rates, including those due to infection, are not significantly different between immunocompromised men and immunocompetent controls. Therefore, immune status in appropriately selected candidates does not appear to place patients at substantially higher risk of explant or revision.
Reaching Men and Women at Risk of Committing Sexual Offences – Findings From the National Swedish Telephone Helpline PrevenTell
Authors: Adebahr Roberth , Söderström Elin Zamore , Arver Stefan , Jokinen Jussi , Öberg Katarina Görts
Published: July 2021

Background

In 2012 the Swedish Helpline project PrevenTell, targeting men and women with self-identified out-of-control and paraphilic sexual behavior, was launched by ANOVA, Karolinska University Hospital. The overall purpose was to reach the target group and via a telephone-contact encourage further on-site assessment and treatment.

Aim

To describe men and women contacting PrevenTell during the first 7 years by delineate sexuality-related risk-factors for sexual violence, gender differences, and age- and gender-preferences when reporting a pedophilic interest.

Method

A 52-item semi-structured telephone interview was conducted by experts in sexual medicine with individuals who contacted the helpline. The interview covered sociodemographic characteristics, problematic sexual behavior(s), and mental health and based on the information reported, interventions included recommending an appointment at ANOVA, supporting other appropriate healthcare, or motivation of individuals still ambivalent to treatment.

RESULTS

Data collection took place between March 2012 and October 2019. A total of 1573 respondents in the main target group (1454 men and 119 women) gave informed consent for participation. Compulsive sexual behavior was reported by 69% of respondents and 56% described at least one paraphilic interest. The prevalence of concomitant compulsive sexual behavior and a paraphilic interest was high, varying between 65% and 83%.

Significant gender differences were found in socioeconomic and mental health variables, in which women showed fewer positive and stable life factors compared to men. A sexual preference for minors was reported by 24% of respondents. In this group, 63% reported use of child sexual exploitation material and 15% committed child sexual abuse. Respondents were offered anonymity, however 55% disclosed their identity and were enrolled for further assessment and treatment at ANOVA.

Clinical Implications

The result of this study is of substantial relevance when developing secondary preventive initiatives targeting sexual violence in the community.

Strengths and Limitations

This is the first study to present data from a national helpline targeting both men and women with a wide range of self-identified problematic sexual behaviors. Limitations include the lack of diagnostic confirmation on-site, hence, presented data provides only an indication of clinical conditions. Furthermore, the main objective of the interview was to motivate participants to seek further treatment, sometimes necessary to prioritize this over adherence to the semi-structured questionnaire, explaining the relatively high absence rate in some variables.

CONCLUSION

Men and women at risk of committing sexual crimes can be reached through a national helpline service and motivated to undergo further assessment and treatment.
Reconsidering the Precolumbian Presence of Venetian Glass Beads in Alaska
Authors: Blair Elliot H.
Published: July 2021

In a recent article, Kunz and Mills (2021) report 10 drawn, a speo finished, turquoise blue, IIa40 beads manufactured in Venice and recovered from three late precontact sites in the Alaskan Arctic. They argue that these beads date to the fifteenth century, predating Columbus's arrival in the Americas. This conclusion is certainly in error because beads of this type were not manufactured prior to approximately AD 1560. The historical and archaeological evidence for this dating is substantial. Additionally, the elemental and radiocarbon evidence presented by Kunz and Mills (2021) supports a late sixteenth- to early seventeenth-century date for these beads.
Reply to Blair
Authors: Kunz Michael L. , Mills Robin O.
Published: July 2021

Blair provides a thorough review of data he claims stands in opposition to our narrative concerning the origins of IIa40/Early Blue glass trade beads and their presence in arctic Alaska prior to Columbus’ initial voyage. He employs three lines of evidence: historical and archaeological data, Instrumental Neutron Activation Analysis, and radiocarbon dating. Our reply addresses his application of these data sets, clarifying his use of our data to arrive at his conclusions. While we continue to disagree with Blair, we do wish to acknowledge his time spent on debating the issue thereby furthering all of our understanding on this topic.
How empathy-based sensitisation and knowledge reinforcement affect policy compliance: a case study of dolphin watching, Ecuador
Authors: Villalba-Briones Ricardo , González-Narvaez Mariela A. , Vitvar Tomas
Published: July 2021

Cetacean watching is an increasingly popular economic activity in Ecuador for tourism operators. Despite government regulations, cetacean watching can have a negative impact on observed animal populations. To enhance good dolphin-watching practices, a course was carried out in Puerto El Morro, Ecuador about sensitisation activities promoting empathy towards and knowledge about bottlenose dolphins, local avifauna and mangrove ecosystems. The course provided tourism operator staff with theoretical and practical knowledge on dolphin physiology and ecology, with a focus on empathy towards the species and on regulations to be respected during the watching tours. The course included interactive workshops, didactic materials, advice, video screening and structured conversations. Two innovative questionnaires were implemented on the boat during 68 dolphin-watching tours to evaluate whether the training course had improved the regulation compliance and on-tour guiding quality of the tour guides and boat drivers. The results showed a statistically significant improvement in dolphin-watching practices in compliance with the “Regulations for the Whale and Dolphin Watching of Ecuador” (p = .0002) and in guidance quality (p = .0004) after the training course. Boat drivers were identified as influential actors in compliance with regulations and should also be included in the environmental awareness training courses. The study showed that empathy-based sensitisation and knowledge reinforcement positively affect policy compliance and can generate new sustainable approaches for future dolphin-watching activities.
Justifying (or Not) the Office of Trusteeship With Particular Reference to Massively Discretionary Trusts
Authors: Penner James
Published: July 2021

In a recent article2 I examined the nature of private law offices, and here I extend that analysis to consider the trustee-beneficiary relationship where the trust is of a kind that Lionel Smith has called a “massively discretionary trust.”3 After considering some of the problematic legal features of such trusts, I shall probe the morally problematic features that these trusts present.
A Systematic Map of Non-Clinical Evidence Syntheses Published Globally on COVID-19
Authors: Majid Umair , Hussain Syed Ahmed Shahzaeem , Wasim Aghna , Farhana Nusrat , Saadat Pakeezah
Published: July 2021

Study objective:

Evidence syntheses perform rigorous investigations of the primary literature and they have played a vital role in generating evidence-based recommendations for governments worldwide during the Covid-19 pandemic. However, there has not yet been an attempt to organize them by topic and other characteristics. This study performed a systematic mapping exercise of non-clinical evidence syntheses pertaining to Covid-19.

Methods:

This study conducted a systematic search on December 5, 2020 across 10 databases and servers: CINAHL (EBSCO Information Services, Ipswich, Massachusetts, United States), Embase (Elsevier, Aalborg, Denmark), Global Health (EBSCO Information Services, Ipswich, Massachusetts, United States), Healthstar (NICHSR and AHA, Bethesda, United States), MEDLINE (NLM, Bethesda, United States), PsychINFO (APA, Washington, DC, United States), Web of Science (Clarivate Analytics, London, UK), Research Square (Research Square, Durham, North Carolina), MEDRxiv (Cold Spring Harbor Laboratory, New York, United States), and PROSPERO (NIHR, York, United Kingdom). Only full evidence syntheses published in a peer-reviewed journal or preprint server were included.

Results:

This study classified all evidence syntheses in the following topics: health service delivery (n = 280), prevention and behavior (n = 201), mental health (n = 140), social epidemiology (n = 31), economy (n = 22), and environment (n = 19). This study provides a comprehensive resource of all evidence syntheses categorized according to topic.

Conclusions:

This study proposes the following research priorities: governance, the impact of Covid-19 on different populations, the effectiveness of prevention and control methods across contexts, mental health, and vaccine hesitancy.
A non-Borel special alpha-limit set in the square
Authors: JACKSON STEPHEN , MANCE BILL , ROTH SAMUEL
Published: July 2021

We consider the complexity of special
$\alpha $
-limit sets, a kind of backward limit set for non-invertible dynamical systems. We show that these sets are always analytic, but not necessarily Borel, even in the case of a surjective map on the unit square. This answers a question posed by Kolyada, Misiurewicz, and Snoha.
Law, Policy, and the Development of Renewable Energy for Electricity: A Case for a Renewable Energy Law in Nigeria
Authors: Lawal Kamoru Taiwo
Published: July 2021

Nigeria faces a perennial problem of inadequate electricity generation and supply. Electricity generation from fossil fuel sources has not succeeded in meeting the electricity needs of the country. And attempts to diversify electricity generation sources to include renewable energy sources have not been successful. Although there is a policy direction supporting the inclusion of renewable energy sources for electricity generation, the Electric Power Sector Reform Act 2005 (ESPR) has not succeeded in achieving the country's sustainable electricity drive. Nigeria needs to vigorously pursue its renewable electricity objectives through a law dedicated to encouraging uptake of renewable energy. This article examines the law and the policies underpinning Nigeria's sustainable electricity drive through a critique of the EPSR Act and the energy policy in light of Nigeria's renewable electricity objectives.
Magmatic stock emplacement and its constraints on the localization of related skarn orebodies: an example from the Tongguanshan stock, Tongling district, eastern China
Authors: Liu Hongsheng , Liu Liangming , Cao Wei , Chen Yan , Faure Michel
Published: July 2021

Study of constraints of stock emplacement and geometry on associated skarn orebodies is significant for the understanding of the epithermal deposit system. We have chosen the typical Tongguanshan skarn ore deposit (eastern China) as our target area. The Tongguanshan stock was emplaced at the NE–SW-striking Tongguanshan anticline and is characterized by macroscopically homogeneous quartz–monzodiorite. The magnetic parameters show that the stock is dominated by oblate magnetic ellipsoids and a high degree of anisotropy (> 1.1), and this value is higher at the stock margin. The strike of magnetic foliation at the stock margin is parallel to the stock boundary with sub-horizontal magnetic lineations. A vertical NE–SW-striking magnetic foliation, which is parallel to the regional structures, is revealed inside the stock. The three-dimensional geometric modelling shows that the stock has a tongue-like geometry and the contact surface in both eastern and western sides dips to the NW, but the western side is steeper. Nevertheless, the orebodies are almost developed at the eastern side. Accordingly, we propose that the Tongguanshan stock was constructed by multiple magma pulses, initiated at the SW part of the stock, and ascended along inherited NE–SW extended fractures in the Tongguanshan anticline. The successive magma pulses either accreted by a unilateral E-wards trend or by bilateral magma accretion, which resulted in a deformation difference in the contact zone and caused uneven orebody development. Our study also shows that the strike, dip angle and curvature situation of contact surface, which affects the water–rock reaction process and distribution of the dilation zone, are important ore-controlling factors.
Enrichment of heavy REE and Th in carbonatite-derived fenite breccia
Authors: Broom-Fendley Sam , Elliott Holly AL , Beard Charles D , Wall Frances , Armitage Paul EB , Brady Aoife E , Deady Eimear , Dawes William
Published: July 2021

Enrichment of the heavy rare earth elements (HREE) in carbonatites is rare as carbonatite petrogenesis favours the light (L)REE. We describe HREE enrichment in fenitized phonolite breccia, focusing on small satellite occurrences 1–2 km from the Songwe Hill carbonatite, Malawi. Within the breccia groundmass, a HREE-bearing mineral assemblage comprises xenotime, zircon, anatase/rutile and minor huttonite/thorite, as well as fluorite and apatite.

A genetic link between HREE mineralization and carbonatite emplacement is indicated by the presence of Sr-bearing carbonate veins, carbonatite xenoliths and extensive fenitization. We propose that the HREE are retained in hydrothermal fluids which are residually derived from a carbonatite after precipitation of LREE minerals. Brecciation provides a focusing conduit for such fluids, enabling HREE transport and xenotime precipitation in the fenite. Continued fluid–rock interaction leads to dissolution of HREE-bearing minerals and further precipitation of xenotime and huttonite/thorite.

At a maximum Y content of 3100 µg g−1, HREE concentrations in the presented example are not sufficient to constitute ore, but the similar composition and texture of these rocks to other cases of carbonatite-related HREE enrichment suggests that all form via a common mechanism linked to fenitization. Precipitation of HREE minerals only occurs where a pre-existing structure provides a focusing conduit for fenitizing fluids, reducing fluid – country-rock interaction. Enrichment of HREE and Th in fenite breccia serves as an indicator of fluid expulsion from a carbonatite, and may indicate the presence of LREE mineralization within the source carbonatite body at depth.
Herpetofaunal community response to hurricanes Irma and Maria in Virgin Islands National Park
Authors: Richter Collin J. , DiGiulio Samantha M. , Marshall Craig D. , Leonard Jill B.K.
Published: July 2021

Disturbances are critical for maintaining environmental heterogeneity and biodiversity across landscapes. Hurricanes represent a common disturbance in the Caribbean Sea. These storms are predicted to become more frequent and severe as climate shifts. Understanding how island communities respond to disturbances is critical to their conservation. We surveyed Virgin Islands National Park located on the island of St. John in the Caribbean Sea in 2016 and 2018 to evaluate prolonged herpetofauna community response and resistance to hurricanes. These surveys occurred in March 2016, and June 2018, before and after the 2017 hurricane season, when hurricanes Irma and Maria struck St. John. Using visual encounter surveys, vocalisation surveys, and opportunistic encounters, we surveyed trails within the park through five landscape cover types pre- and post-hurricane. We used linear regression to determine differences in diversity and species richness among landscape cover types and between pre- and post-hurricane surveys and non-metric multidimensional scaling to observe associations among species and landscape cover types pre- and post-hurricane surveys. We determined that there were no significant changes in landscape cover and herpetofauna community associations before and after the 2017 hurricane season, indicating that the herpetofauna communities of Virgin Islands National Park are well adapted to hurricane-related disturbance.
Vera Bácskai and urban history: life, work and impact
Authors: Szívós Erika , Szende Katalin
Published: July 2021

This special section pays tribute to Professor Vera Bácskai (1930–2018), an outstanding Hungarian urban historian, one of the founders and former presidents of the European Association for Urban History. Vera Bácskai was an influential personality whose work and personal impact inspired generations of younger scholars. She played an instrumental role in the institutionalization of modern social and urban history in her homeland, while she also had a great share in creating the international networks and organizations that define the framework for European urban history to this day. The introductory article reflects on her life, career and impact, and it offers a thematic introduction into the articles of the special section.
Sheltering refugees: ephemeral architecture and mass migration in early modern Venice
Authors: Abdon Danielle
Published: July 2021

This article investigates the creation of a shelter for migrants in fifteenth-century Venice. As an ephemeral structure, the shelter raises questions regarding the scope, mutability and materiality of the city's early modern urban fabric. Further, due to its mission to shelter eastern refugees, the shelter is embedded in foreign policy matters stemming from and aiming to stabilize Venetian presence in the eastern Mediterranean. This article positions the structure in the context of an early modern refugee crisis and Venice's multi-pronged urban and architectural responses in poor relief.
English verbs can omit their objects when they describe routines
Authors: GLASS LELIA
Published: July 2021

Which normally transitive verbs can omit their objects in English (I ate), and why? This article explores three factors suggested to facilitate object omission: (i) how strongly a verb selects its object (Resnik 1993); (ii) a verb's frequency (Goldberg 2005); (iii) the extent to which the verb is associated with a routine – a recognized, conventional series of actions within a community (Lambrecht & Lemoine 2005; Ruppenhofer & Michaelis 2010; Levin & Rapaport Hovav 2014; Martí 2010, 2015). To operationalize (iii), this article compares the writings of different communities to offer corpus and experimental evidence that verbs omit their objects more readily in the communities in which they are more strongly associated with a routine. More broadly, the article explores how the meaning and syntactic potential of verbs are shaped by the practices of the people who use them.
ON NONCRITICAL GALOIS REPRESENTATIONS
Authors: Xie Bingyong
Published: July 2021

We propose a conjecture that the Galois representation attached to every Hilbert modular form is noncritical and prove it under certain conditions. Under the same condition we prove Chida, Mok and Park’s conjecture that Fontaine-Mazur L-invariant and Teitelbaum-type L-invariant coincide with each other.