bluuebunny/crossref_metadata_2025 huggingface dataset:
Effects of the Velocity Sequences on the Friction and Wear Performance of PEEK-Based Materials
Authors: Lin Leyu , Zhao Yuxiao , Hua Chi , Schlarb Alois K.
Published: May 2021

In the present study, effects of the sliding velocity sequences on the friction and wear properties of pure polyetheretherketone (PEEK) and a PEEK hybrid composite were studied. It is demonstrated that the tribological properties of pure PEEK and its composite show a complex nature of the dependence on the velocity sequences in the studied range. The friction coefficient of PEEK is independent on previous velocity histories. In contrast, the testing sequence of the velocity exerts obvious impact on the friction coefficient of the PEEK composite at slow sliding velocities. With respect to the wear performance, the specific wear rate of pure PEEK exhibits a strong dependence on the sequences of the velocity only at the initial pv-levels. For the PEEK composite, its specific wear rate exhibits an obvious dependence on the previous velocity levels at a low nominal pressure of 1 MPa. When the pressure is increased to 8 MPa, the impact of the velocity sequences on the wear performance becomes insignificant. In addition, the tribological properties clearly correlate with the temperature of the tribosystem.

Graphical Abstract
The Effect of Covert and Overt Infections on Disease Dynamics in Honey-Bee Colonies
Authors: Britton Nicholas F. , Jane White K. A.
Published: May 2021

Viral diseases of honey bees are important economically and ecologically and have been widely modelled. The models reflect the fact that, in contrast to the typical case for vertebrates, invertebrates cannot acquire immunity to a viral disease, so they are of SIS or (more often) SI type. Very often, these diseases may be transmitted vertically as well as horizontally, by vectors as well as directly, and through the environment, although models do not generally reflect all these transmission mechanisms. Here, we shall consider an important additional complication the consequences of which have yet to be fully explored in a model, namely that both infected honey bees and their vectors may best be described using more than one infection class. For honey bees, we consider three infection classes. Covert infections occur when bees have the virus under control, such that they do not display symptoms of the disease, and are minimally or not at all affected by it. Acutely overtly infected bees often exhibit severe symptoms and have a greatly curtailed lifespan. Chronically overtly infected bees typically have milder symptoms and a moderately shortened lifespan. For the vector, we consider just two infection classes which are covert infected and overt infected as has been observed in deformed-wing virus (DWV) vectored by varroa mites. Using this structure, we explore the impact of spontaneous transition of both mites and bees from a covertly to an overtly infected state, which is also a novel element in modelling viral diseases of honey bees made possible by including the different infected classes. The dynamics of these diseases are unsurprisingly rather different from the dynamics of a standard SI or SIS disease. In this paper, we highlight how our compartmental structure for infection in honey bees and their vectors impact the disease dynamics observed, concentrating in particular on DWV vectored by varroa mites. If there is no spontaneous transition, then a basic reproduction number $$R_0$$

R
0

exists. We derive a condition for $$R_0>1$$

R
0

>
1

that reflects the complexities of the system, with components for vertical and for direct and vector-mediated horizontal transmission, using the directed graph of the next-generation matrix of the system. Such a condition has never previously been derived for a honey-bee–mite–virus system. When spontaneous transitions do occur, then $$R_0$$

R
0

no longer exists, but we introduce a modification of the analysis that allows us to determine whether (i) the disease remains largely covert or (ii) a substantial outbreak of overt disease occurs.
Phylogenetic assessment and taxonomic revision of Halobyssothecium and Lentithecium (Lentitheciaceae, Pleosporales)
Authors: Calabon Mark Seasat , Jones E.B. Gareth , Hyde Kevin D. , Boonmee Saranyaphat , Tibell Sanja , Tibell Leif , Pang Ka-Lai , Phookamsak Rungtiwa
Published: May 2021

Our studies on lignicolous aquatic fungi in Thailand, Sweden, and the UK resulted in the collection of three new Halobyssothecium species (H. bambusicola, H. phragmitis, H. versicolor) assigned to Lentitheciaceae (Pleosporales, Dothideomycetes). Multi-loci phylogenetic analyses of the combined large subunit, small subunit, internal transcribed spacers of ribosomal DNA, and the translation elongation factor 1-alpha sequence data enabled a revision of the taxa assigned to Lentithecium and the transfer of L. cangshanense, L. carbonneanum, L. kunmingense, L. unicellulare, and L. voraginesporum to Halobyssothecium. Collection of an asexual morph of L. lineare and phylogenetic analysis confirmed its taxonomic placement in Keissleriella. Detailed descriptions and illustrations of H. bambusicola, H. phragmitis, and H. versicolor are provided.
Das positiv-blickende Selbst als Schauplatz der Armutsbearbeitung
Authors: Kerle Anja
Published: May 2021

Die Fachkräfte und ihre Haltung sind im Feld der Dreh- und Angelpunkt der Armutsbearbeitung. In verschiedenen Sprechweisen inszenieren sie den positiven Blick auf Kinder und Eltern. Armut wird sich dadurch rhetorisch entledigt, während strukturelle Benachteiligungen unerkannt bleiben.
New insights into the properties of high-manganese steel
Authors: Bleck Wolfgang
Published: May 2021

In the Collaborative Research Centre 761’s “Steel ab initio - quantum mechanics guided design of new Fe based materials,” scientists and engineers from RWTH Aachen University and the Max Planck Institute for Iron Research conducted research on mechanism-controlled material development with a particular focus on high-manganese alloyed steels. From 2007 to 2019, a total of 55 partial projects and four transfer projects with industrial participation (some running until 2021) have studied material and process design as well as material characterization. The basic idea of the Collaborative Research Centre was to develop a new methodological approach to the design of structural materials. This paper focuses on selected results with respect to the mechanical properties of high-manganese steels, their underlying physical phenomena, and the specific characterization and modeling tools used for this new class of materials. These steels have microstructures that require characterization by the use of modern methods at the nm-scale. Along the process routes, the generation of segregations must be taken into account. Finally, the mechanical properties show a characteristic temperature dependence and peculiarities in their fracture behavior. The mechanical properties and especially bake hardening are affected by short-range ordering phenomena. The strain hardening can be adjusted in a never-before-possible range, which makes these steels attractive for demanding sheet-steel applications.
Stress-state dependence of dynamic strain aging: Thermal hardening and blue brittleness
Authors: Liu Wen-qi , Lian Jun-he
Published: May 2021

This study aims to discover the stress-state dependence of the dynamic strain aging (DSA) effect on the deformation and fracture behavior of high-strength dual-phase (DP) steel at different deformation temperatures (25–400°C) and reveal the damage mechanisms under these various configurations. To achieve different stress states, predesigned specimens with different geometric features were used. Scanning electron microscopy was applied to analyze the fracture modes (e.g., dimple or shear mode) and underlying damage mechanism of the investigated material. DSA is present in this DP steel, showing the Portevin-Le Chatelier (PLC) effect with serrated flow behavior, thermal hardening, and blue brittleness phenomena. Results show that the stress state contributes distinctly to the DSA effect in terms of the magnitude of thermal hardening and the pattern of blue brittleness. Either low stress triaxiality or Lode angle parameter promotes DSA-induced blue brittleness. Accordingly, the damage mechanisms also show dependence on the stress states in conjunction with the DSA effect.
Constraints of the durability of inorganic and organic consolidants for marble
Authors: Menningen Johanna , Sassoni Enrico , Sobott Robert , Siegesmund Siegfried
Published: May 2021

In the present study, 5 different consolidants were tested on 5 different marble varieties preliminarily subjected to artificial weathering, to evaluate their consolidating effectiveness and thermal behavior after consolidation, in terms of residual strain after heating–cooling cycles in dry and wet condition and tendency to bowing. Treatments based on ethyl silicate, with and without a coupling agent to improve the performance on calcitic substrates, exhibited modest increases in cohesion after consolidation, as well as an increase in the thermal expansion coefficient and some residual strain at the end of the cycles. Paraloid B72 caused minor alterations in the pore system and limited increases in ultrasonic velocity, while the so-called “acrylic total impregnation” method led to an almost complete pore filling and significant improvements in cohesion. While the latter samples apparently resisted well to heating–cooling cycles, samples impregnated with Paraloid B72 exhibited progressive collapse of the fabric, likely due to the low glass transition temperature of Paraloid B72. Ammonium phosphate proved to be able to significantly improve marble cohesion and led to lower residual strain after heating–cooling cycles, compared to untreated marble. The DAP-treatment also exhibited a significant ability to slow down further bowing of already bowed slabs and to prevent bowing of initially planar slabs.
The Inferto-Sex Syndrome (ISS): sexual dysfunction in fertility care setting and assisted reproduction
Authors: Luca G. , Parrettini S. , Sansone A. , Calafiore R. , Jannini E. A.
Published: May 2021

Purpose

Infertility represents a peculiar social burden affecting more than 15% of couples, provoking it a real threat to the general quality of life and to the sexual health. The medicalization (diagnosis, therapy and follow up) of the lack of fertility is frequently a challenge in term of personal and couple’s involvement. In particular, while the Assisted Reproductive Technology (ART) has allowed many infertile couples to achieve pregnancy, the therapeutic process faced by the couple bears a strong psychological stress that can affect the couple's quality of life, relationship and sexuality. Despite infertility affects both female and male sexual health, only recently the interest in the effects of ART on the couple's sexuality has grown, especially for women.

Methods

A literature research on the sexual dysfunction in fertility care and particularly in ART setting was performed.

Results

Literature largely found that intimacy and sexuality appear specifically impaired by intrusiveness of treatments and medical prescriptions. Moreover, there is a close relationship between emotional, psychological and sexual aspects, which can be integrated in the new concept of Inferto-Sex Syndrome (ISS) that can impair the ART treatment outcomes. Evidence demonstrates that the assessment of sexual function is necessary in couples undergoing diagnosis of infertility and ART.

Conclusion

A close relationship between infertility and sexuality, both in the female and male partners, was detected. ART treatments may heavily impact on the couple's psychosexual health. A couple-centred program for the integrated management of psychological and sexual dysfunction should be considered in the context of ART programs.
Multi-objective fault-tolerant optimization algorithm for deployment of IoT applications on fog computing infrastructure
Authors: Ramzanpoor Yaser , Hosseini Shirvani Mirsaeid , Golsorkhtabaramiri Mehdi
Published: May 2021

Nowadays, fog computing as a complementary facility of cloud computing has attracted great attentions in research communities because it has extraordinary potential to provide resources and processing services requested for applications at the edge network near to users. Recent researchers focus on how efficiently engage edge networks capabilities for execution and supporting of IoT applications and associated requirement. However, inefficient deployment of applications’ components on fog computing infrastructure results bandwidth and resource wastage, maximum power consumption, and unpleasant quality of service (QoS) level. This paper considers reduction of bandwidth wastage in regards to application components dependency in their distributed deployment. On the other hand, the service reliability is declined if an application’s components are deployed on a single node for the sake of power consumption management viewpoint. Therefore, a mechanism for tackling single point of failure and application reliability enhancement against failure are presented. Then, the components deployment is formulated to a multi-objective optimization problem with minimization perspective of both power consumption and total latency between each pair of components associated to applications. To solve this combinatorial optimization problem, a multi-objective cuckoo search algorithm (MOCSA) is presented. To validate the work, this algorithm is assessed in different conditions against some state-of the arts. The simulation results prove the amount 42%, 29%, 46%, 13%, and 5% improvement of proposed MOCSA in terms of average overall latency respectively against MOGWO, MOGWO-I, MOPSO, MOBA, and NSGA-II algorithms. Also, in term of average total power consumption the improvement is about 43%, 28%, 41%, 30%, and 32% respectively.
Microfluidically supported characterization of responses of Rhodococcus erythropolis strains isolated from different soils on Cu-, Ni-, and Co-stress
Authors: Cao Jialan , Chande Charmi , Kalensee Franziska , Schüler Tim , Köhler Michael
Published: May 2021

We present a new methodological approach for the assessment of the susceptibility of Rhodococcus erythropolis strains from specific sampling sites in response to increasing heavy metal concentration (Cu2+, Ni2+, and Co2+) using the droplet-based microfluid technique. All isolates belong to the species R. erythropolis identified by Sanger sequencing of the 16S rRNA. The tiny step-wise variation of metal concentrations from zero to the lower mM range in 500 nL droplets not only provided accurate data for critical metal ion concentrations but also resulted in a detailed visualization of the concentration-dependent response of bacterial growth and autofluorescence activity. As a result, some of the isolates showed similar characteristics in heavy metal tolerance against Cu2+, Ni2+, and Co2+. However, significantly different heavy metal tolerances were found for other strains. Surprisingly, samples from the surface soil of ancient copper mining areas supplied mostly strains with a moderate sensitivity to Cu2+, Ni2+, and Co2+, but in contrast, a soil sample from an excavation site of a medieval city that had been covered for about eight centuries showed an extremely high tolerance against cobalt ion (up to 36 mM). The differences among the strains not only may be regarded as results of adaptation to the different environmental conditions faced by the strains in nature but also seem to be related to ancient human activities and temporal partial decoupling of soil elements from the surface. This investigation confirmed that microfluidic screening offers empirical characterization of properties from same species which has been isolated from sites known to have different human activities in the past.
Violated and Transcended Bodies
Authors: Streete Gail P.
Published: May 2021

Given its eschatological orientation and its marginal position in the Roman Empire, emergent Christianity found embodiment, as an aspect of being in the world, problematic. Those identified and identifying as Christians developed two broad responses to that world as they embraced the idea of being in, yet not of it. The first response, martyrdom, was witness to the strength their faith gave to fragile bodies, particularly those of women, and the ability by suffering to overcome bodily limitation and attain the resurrection life. The second, asceticism, complemented and later continued martyrdom as a means of bodily transcendence and participation in the spiritual world.
Rethinking Paul
Authors: van Driel Edwin Chr.
Published: May 2021

In this book, Edwin van Driel analyzes contemporary Pauline exegesis and its implications for Protestant theology. Over the last several decades, scholars have offered fresh interpretations of the apostle, including the New Perspective on and the apocalyptic reading of Paul. Van Driel juxtaposes these proposals with traditional Protestant understandings of Paul and argues that the crucial difference between these two readings lies not in how one understands isolated Pauline notions but in different assumed narrative substructures of the apostle's writings. He explores how these new exegetical proposals deepen, broaden, enrich, and challenge traditional Protestant theological paradigms, as well as how they are situated alongside current contextual conversations on theological anthropology, social imagination, and the church's mission. Van Driel's volume opens up new avenues for interdisciplinary exploration and cooperation between biblical scholarship and theology.
The Scope of Compulsory Jurisdiction and Exceptions Thereto under theUnited Nations Convention on the Law of the Sea
Authors: KUNOY BJØRN
Published: May 2021

The establishment of a compulsory dispute settlement mechanism in theUnited Nations Convention on the Law of the Sea(UNCLOS) is intended to be the guarantor of the proper application of the convention. Yet the decisions of courts and tribunals seized pursuant to the procedures under Section 2 of Part XV ofUNCLOSare in many regards difficult to reconcile and in some regards unable to form the basis for ajurisprudence constante.This article examines on an empirical basis the scope and limits of the compulsory dispute settlement mechanism underUNCLOS, as applied by international courts and tribunals during a period of twenty years since the first decision in theSouthern Bluefin Tunacase until the recent decision on preliminary objections in theDispute Concerning Delimitation of the Maritime Boundary between Mauritius and Maldives in the Indian Ocean.
Mining for Legal Luxuries: The Pitfalls and Potential of Nevsun Resources Ltd v Araya
Authors: MONTEIRO EVA
Published: May 2021

Globalization has effectively enabled Canada’s domestically incorporated mining companies to escape the jurisdiction of the courts of the world, allowing them to carry out human rights abuses abroad with impunity. In February 2020, however, the Supreme Court of Canada issued a landmark judgment, Nevsun Resources Ltd v Araya, which attempted to address this jurisdictional gap. This decision held that Canadian corporations could potentially be liable under domestic law for breaches of customary international law perpetrated abroad. The decision has been criticized for straying too far from a classically positivist conception of international law. This article argues that such criticisms are well founded insofar as the majority’s judgment implicitly relies on progressive human-centric theories of international law without adequately addressing how these are reconcilable with international law as it is currently applied. It then explores the ideas that drive the majority’s opinion in order to propose two alternative approaches to holding corporations accountable that are more readily reconcilable with traditional state-centric conceptions of international law. Adopting these revised approaches could less contentiously lead to corporate accountability before future domestic courts. Finally, this article considers the potential international developments and repercussions to which this and other forward-looking decisions could lead.
The Error-Prone Operational Steps and Key Sites of Self-Contamination During Donning and Doffing of Personal Protective Equipment by Health Care Workers
Authors: Zhang Hui-Lan , Yang Sha , Luo Hong-Xia , You Jian-Ping
Published: May 2021

Objective:

This study aims to identify error-prone operational steps and key sites of self-contamination during donning and doffing of personal protective equipment (PPE).

Methods:

A total of 56 health care workers, including 37 nurses and 19 physicians, were recruited to don and doff the PPE recommended by the Chinese Center for Disease Control and Prevention. Operational errors and sites of self-contamination were recorded using UV-fluorescent labeling and video surveillance.

Results:

Three main errors during donning were identified: choosing a loose-fitting coverall that was difficult to handle; ignoring to inspect the seal of N95 respirator or gloves; and forgetting to pull up the zipper completely. Four main errors during doffing were identified: removing the N95 respirator in a wrong way; touching the scrubs with contaminated hands and elbows; touching contaminated external surfaces of the goggles; and performing insufficient hand hygiene. Key sites that were easily contaminated during the doffing of PPE included left hand and wrist, left lower leg, chest, and left abdomen.

Conclusion:

Identifying the steps prone to errors and key sites of self-contamination in the process of PPE donning and doffing can facilitate the training of PPE use and provide detailed evidence for optimizing standardized protocols to reduce contamination.
Exploring the Limits of the Limited Partnership: The Case of the Bank of Twente, 1860s–1920s
Authors: de Vicq Amaury
Published: May 2021

This paper presents a detailed historical account of the Bank of Twente (Twentsche Bankvereeniging), launched in 1861 and, for most of the subsequent decades, the largest, fastest-growing, and most profitable bank in the Netherlands. It follows the narrative analysis approach to illustrate that the circumscribed use of a limited partnership was rooted in the organizational form having a flaw of its own that, under particular circumstances, created serious agency costs. As the bank grew, so did the agency costs, finally forcing the bank to incorporate in 1917.
ON THE POLITICAL OUTLOOK OF THE ‘ANONYMUS IAMBLICHI’ (DIELS–KRANZ 89)
Authors: Sørensen Anders Dahl
Published: May 2021

The political outlook of the so-called ‘Anonymus Iamblichi’ (DK 89) has been a subject of controversy in the scholarly literature, with some commentators judging him to be a committed democrat, while others see in him a partisan of aristocracy or even oligarchy. This disagreement is not surprising, for the text contains passages that seem to pull in opposite directions. The article suggests that we move beyond the one-dimensional oligarch-or-democrat model traditionally employed and instead approach the issue from a fresh angle, applying the more nuanced typology for understanding ancient social criticism (‘rejectionist’ vs ‘immanent’) developed by Josiah Ober.

The article begins by situating the author within the social landscape of classical Athens. The resulting characterization presents the author as a representative of a distinctive social type: the Athenian ‘rich quietist’, who prefers private economic endeavours to engagement in public affairs, and who is ideologically committed to democratic government but also highly critical of how democratic society treats its wealthy citizens. This characterization helps make better sense of the seemingly contradictory political indications in the text. In particular, fragments 6 and 7 should be read as a single line of argument, which takes the form of an ‘immanent critique’ of contemporary Athenian democracy. According to ‘Anonymus Iamblichi’, democratic society rightly praises the rule of law as a distinctive democratic value, but it falls disappointingly short of that ideal in its treatment of its own wealthy elite citizens.
Cosmopolitan Visions and Intellectual Passions: Macanese publics in British Hong Kong
Authors: CHAN CATHERINE S.
Published: May 2021

From the lens of two Macanese publics, this study rethinks cosmopolitanism as a diverse identity and pursuit that can vary from one individual to another. It complicates what we know about polyglot Asian publics often profiled as ‘cosmopolitan’ for their foreign education, middle-class status, social commitment, and internationalist visions. I argue that, while these subjects shared a common background, they diverged according to shifting global contexts, generational differences, and personal experience. On a par with imagining themselves as part of a global community, cosmopolitan publics navigated between personal worlds and communal networks, as well as between a narrower nationalist and/or urban context and a broader global framework. My first subject, Macao-born Lourenço Pereira Marques, saw Hong Kong as a liberal ground to disseminate Darwinism across southern China's Lusophone public sphere during the 1880s, whereas Hong Kong-born José Pedro Braga worked to preach an internationalist vision of racial equality through a wider Anglophone public sphere and an emerging transnational associational culture in the early twentieth century. This study also aims to further our understanding regarding Hong Kong as a vibrant port city and explore the diversity of cosmopolitan publics in the context of transitioning internal and external worlds.
Suicide rates among people with serious mental illness: a systematic review and meta-analysis
Authors: Fu Xue-Lei , Qian Yan , Jin Xiao-Hong , Yu Hai-Rong , Wu Hua , Du Lin , Chen Hong-Lin , Shi Ya-Qin
Published: May 2021

Background

People with serious mental illness are at great risk of suicide, but little is known about the suicide rates among this population. We aimed to quantify the suicide rates among people with serious mental illness (bipolar disorder, major depression, or schizophrenia).

Methods

PubMed and Web of Science were searched to identify studies published from 1 January 1975 to 10 December 2020. We assessed English-language studies for the suicide rates among people with serious mental illness. Random-effects meta-analysis was used. Changes in follow-up time and the suicide rates were presented by a locally weighted scatter-plot smoothing (LOESS) curve. Suicide rate ratio was estimated for assessments of difference in suicide rate by sex.

Results

Of 5014 identified studies, 41 were included in this analysis. The pooled suicide rate was 312.8 per 100 000 person-years (95% CI 230.3–406.8). Europe was reported to have the highest pooled suicide rate of 335.2 per 100 000 person-years (95% CI 261.5–417.6). Major depression had the highest suicide rate of 534.3 per 100 000 person-years (95% CI 30.4–1448.7). There is a downward trend in suicide rate estimates over follow-up time. Excess risk of suicide in males was found [1.90 (95% CI 1.60–2.25)]. The most common suicide method was poisoning [21.9 per 100 000 person-years (95% CI 3.7–50.4)].

Conclusions

The suicide rates among people with serious mental illness were high, highlighting the requirements for increasing psychological assessment and monitoring. Further study should focus on region and age differences in suicide among this population.
Understanding outcomes in family-based treatment for adolescent anorexia nervosa: a network approach
Authors: Hagan Kelsey E. , Matheson Brittany E. , Datta Nandini , L'Insalata Alexa M. , Onipede Z. Ayotola , Gorrell Sasha , Mondal Sangeeta , Bohon Cara M. , Grange Daniel Le , Lock James D.
Published: May 2021

Background

Family-based treatment (FBT) is the first-line treatment for adolescent anorexia nervosa (AN). Yet, remission is not achieved for about half of adolescents with AN receiving FBT. Understanding patient- and parent-level factors that predict FBT response may inform treatment development and improve outcomes.

Methods

Network analysis was used to identify the most central symptoms of AN in adolescents who completed the Eating Disorder Examination (EDE) prior to FBT (N = 409). Bridge pathways between adolescent AN and parental self-efficacy in facilitating their child's recovery from AN were identified in a subset of participants (n = 184). Central and bridge symptoms were tested as predictors of early response (⩾2.4 kg weight gain by the fourth session of FBT) and end-of-treatment weight restoration [⩾95% expected body weight (EBW)] and full remission (⩾95% EBW and EDE score within 1 standard deviation of norms).

Results

The most central symptoms of adolescent AN included desiring weight loss, dietary restraint, and feeling fat. These symptoms predicted early response, but not end-of-treatment outcomes. Bridge symptoms were parental beliefs about their responsibility to renourish their child, adolescent discomfort eating in front of others, and adolescent dietary restraint. Bridge symptoms predicted end-of-treatment weight restoration, but not early response nor full remission.

Conclusions

Findings highlight the prognostic utility of core symptoms of adolescent AN. Parent beliefs about their responsibility to renourish their child may maintain associations between parental self-efficacy and AN psychopathology. These findings could inform strategies to adapt FBT and improve outcomes.
Selective logging does not alter termite response to soil gradients in Amazonia
Authors: Azevedo Renato Almeida de , Santos Quézia Cristina Lima , Fluck Isadora Essig , Rodrigues Domingos J. , Battirola Leandro D. , Dambros Cristian de Sales
Published: May 2021

Selective logging has been widely employed as a management practice in tropical forests due to its reduced impact on biodiversity. However, by altering microclimatic conditions, logging could affect soil fauna responsible for nutrient cycling and the long-term dynamic of the forest. We investigated how selective logging affected termite species richness, composition, and the distribution of species in trophic groups, as well as the natural response of termites to gradients of soil conditions. Termites and edaphic variables were sampled in 32 permanent plots in southern Amazonia. Plots were subject to selective logging for 10–31 years before termite sampling. Time post-management was associated with changes in termite species composition, and wood-feeding termites were more abundant in recently logged areas. Nevertheless, most of the variation in termite species richness and composition can be attributed to the natural variation in soil clay content. Moreover, soil-dweller species, a vulnerable group strongly linked to soil decomposition, were present in all plots. These results suggest that the impact of selective logging on termite communities might be milder compared with other types of disturbance. It is likely that the decomposition process performed by termites, and consequently long-term ecosystem functioning, is preserved under selective logging.
Connecting protected areas in the Iberian peninsula to facilitate climate change tracking
Authors: Mingarro Mario , Lobo Jorge M.
Published: May 2021

Protected areas (PAs) are intended to preserve natural places, aiming to sustain ecosystem functionality and preserve biodiversity. However, PAs are spatially static, while major threats to biodiversity, such as climate and land-use change, are dynamic. The climatic conditions represented in a PA could vanish in the future and appear in other places more or less far away from the PA; these places could be considered as recipient areas potentially suited to receive propagules from the source PAs, which tend to lose the climatic conditions that motivated their protection. This study estimates the current and future climatic representativeness of mainland Iberian national parks by identifying future areas with a similar climate to those existing now in the parks and taking into account the degree of anthropogenic alteration and protection. We identify a network of ecological corridors connecting Iberian national parks with their recipient areas, as well as discriminating those most conflicting areas that impede network connectivity due to their degree of land-use transformation. Our results identify important areas for maintaining the climatic representativeness of Iberian national parks in the future, showing a substantial reduction in the climatic representativeness of the Iberian national parks. Although most of the recipient areas now have forest and semi-natural land uses and more than half of their whole area has protected status, current land uses in the Iberian Peninsula severely obstruct the corridor network connecting the parks and recipient areas.
The heart of the matter: Developing the whole child through community resources and caregiver relationships
Authors: Morris Amanda Sheffield , Hays-Grudo Jennifer , Kerr Kara L. , Beasley Lana O.
Published: May 2021

Numerous developmental scholars have been influenced by the research, policies, and thinking of the late Edward Zigler, who was instrumental in founding Head Start and Early Head Start. In line with the research and advocacy work of Zigler, we discuss two models that support the development of the whole child. We begin by reviewing how adverse and protective experiences “get under the skin” and affect developmental trajectories and risk and resilience processes. We then present research and examples of how experiences affect the whole child, the heart and the head (social, emotional, cognitive, and physical development), and consider development within context and across domains. We discuss examples of interventions that strengthen nurturing relationships as the mechanism of change. We offer a public health perspective on promoting optimal development through nurturing relationships and access to resources during early childhood. We end with a discussion of the myth that our current society is child-focused and argue for radical, essential change to make promoting optimal development for all children the cornerstone of our society.
The Flatness Index of Inferior Vena Cava can be an Accurate Predictor for Hypovolemia in Multi-Trauma Patients
Authors: Yazlamaz Nazlı Ozcan , Ozakin Engin , Bastug Betül T. , Karakilic Evvah , Kaya Filiz Baloglu , Acar Nurdan , Koruk Rusengul
Published: May 2021

Introduction:

Shock is the leading cause of death in multi-trauma patients and must be detected at an early stage to improve prognosis. Many parameters are used to predict clinical condition and outcome in trauma. Computed tomography (CT) signs of hypovolemic shock in trauma patients are not clear yet, requiring further research. The flatness index of inferior vena cava (IVC) is a helpful method for this purpose.

Methods:

This is a prospective, cross-sectional study which included adult multi-trauma patients (>18 years) who were admitted to the emergency department (ED) and underwent a thoraco-abdominal CT from 2017 through 2018. The main objective of this study was to investigate whether the flatness index of IVC can be used to determine the hypovolemic shock at an early stage in multi-trauma patients, and to establish its relations with shock parameters. The patients’ demographic features, trauma mechanisms, vitals, laboratory values, shock parameters, and clinical outcome within 24 hours of admission were recorded.

Results:

Total of 327 (229 males with an average age of 40.9 [SD = 7.93]) patients were included in the study. There was no significant difference in the flatness index of IVC within genders (P = .134) and trauma mechanisms (P = .701); however, the flatness index of IVC was significantly higher in hypotensive (systolic blood pressure [SBP] ≤90 mmHg and/or diastolic blood pressure [DBP] ≤60 mmHg; P = .015 and P = .019), tachycardic (P = .049), and hypoxic (SpO2 ≤%94; P <.001) patients. The flatness index of IVC was also higher in patients with lactate ≥ 2mmol/l (P = .043) and patients with Class III hemorrhage (P = .003). A positive correlation was determined between lactate level and the flatness index of IVC; a negative correlation was found between Glasgow Coma Scale (GCS) and Revised Trauma Score (RTS) with the flatness index of IVC (for each of them, P <.05).

Conclusion:

The flatness index of IVC may be a useful method to determine the hypovolemic shock at an early stage in multi-trauma patients.
Lexical category differences in bilingual picture naming: Implications for models of lexical representation
Authors: Faroqi-Shah Yasmeen , Kevas Yanni , Li Ran
Published: May 2021

Bilingual speakers are less accurate and slower than monolinguals in word production. This bilingual cost has been demonstrated primarily for nouns. This study compared verb and noun retrieval to better understand bilingual lexical representation and test alternate hypotheses about bilingual cost. Picture naming speeds from highly proficient English–Spanish bilinguals showed a smaller bilingual cost for verbs compared to nouns. In Experiment 1, picture naming speeds were influenced by name agreement, age-of-acquisition and word length. Additionally, noun (but not verb) naming speed was predicted by word frequency. Experiment 2 examined two potential explanations for the smaller bilingual cost for verbs: verbs experience weaker cross-language interference (measured by translation speed) and smaller frequency effects. Both these predictions were confirmed, showing crucial differences between verbs and nouns and suggesting that cross-language facilitation rather than interference influences bilingual lexical retrieval, and that the frequency lag account of bilingual cost is more applicable to nouns than to verbs. We propose a Bilingual Integrated Grammatical Category model for highly proficient bilinguals to represent lexical category differences.
Preferences of quality delivery of palliative care among cancer patients in low- and middle-income countries: A review
Authors: Yemoh Vicky , Olayemi Lawal Olatunde , Abraham Jyothi Alex
Published: May 2021

Background

All forms of cancer pose a tremendous and increasing problem globally. The prevalence of cancer across the globe is anticipated to double over the next two decades. About 50% of most cancer cases are expected to occur in low- and middle-income countries (LMICs), where there is a greater disproportionate level in mortality. Access to effective and timely care for cancer patients remains a challenge, especially in LMICs due to late disease diagnosis and detection, coupled with the limited availability of appropriate therapeutic options and delay in proper interventions.

Methodology

This study explored several mixed-method researches and randomized trials that addressed the preferences of quality delivery of palliative care among cancer patients in LMICs. A designated set of keywords such as Palliative Care; Preferences; Cancer patients; Psycho-social Support; End-of-life Care; Low and Middle-Income Countries were inserted on electronic databases to retrieve articles. The databases include PubMed, Scinapse, Medline, The Google Scholar, Academic search premier, SAGE, and EBSCO host.

Results

Findings from this review discussed the socioeconomic and behavioral factors, which address the quality delivery of palliative care among cancer patients. These factors if measured with acceptance level in cancer patients could help to address areas that need improvement from the stage of disease diagnosis to the end-of-life.

Significance of the results

Valuable collaborations among international and local health institutions are needed to build and implement a systematic framework for palliative care in LMICs. Policies and programs that are country and culturally specific, encompassing both theoretical and practical models of care in the milieu of existing quandaries should be developed.
Magnetic Holes in the Solar Wind and Magnetosheath Near Mercury
Authors: Karlsson T. , Heyner D. , Volwerk M. , Morooka M. , Plaschke F. , Goetz C. , Hadid L.
Published: May 2021

We present a comprehensive statistical study of magnetic holes, defined as localized decreases of the magnetic field strength of at least 50%, in the solar wind near Mercury, using MESSENGER orbital data. We investigate the distributions of several properties of the magnetic holes, such as scale size, depth, and associated magnetic field rotation. We show that the distributions are very similar for linear magnetic holes (with a magnetic field rotation across the magnetic holes of less than 25°) and rotational holes (rotations >25°), except for magnetic holes with very large rotations (≳140°). Solar wind magnetic hole scale sizes follow a log‐normal distribution, which we discuss in terms of multiplicative growth. We also investigate the background magnetic field strength of the solar wind surrounding the magnetic holes, and conclude that it is lower than the average solar wind magnetic field strength. This is consistent with finding solar wind magnetic holes in high‐βregions, as expected if magnetic holes have a connection to magnetic mirror mode structures. We also present, for the first time, comprehensive statistics of isolated magnetic holes in a planetary magnetosheath. The properties of the magnetosheath magnetic holes are very similar to the solar wind counterparts, and we argue that the most likely interpretation is that the magnetosheath magnetic holes have a solar wind origin, rather than being generated locally in the magnetosheath.
The Role of the Gulf of Mexico Ocean Conditions in the Intensification of Hurricane Michael (2018)
Authors: Le Hénaff Matthieu , Domingues Ricardo , Halliwell George , Zhang Jun A. , Kim Hyun‐Sook , Aristizabal Maria , Miles Travis , Glenn Scott , Goni Gustavo
Published: May 2021

Hurricane Michael formed on October 7, 2018, in the Northwestern Caribbean Sea, and quickly traveled northward through the Gulf of Mexico, making landfall on the Florida panhandle as a devastating Category 5 hurricane only 3 days later. Before landfall, Michael underwent rapid intensification, despite unfavorable atmospheric conditions. Using observations, we characterized the key ocean features encountered by Michael along its track, which are known for favoring hurricane intensification: high sea surface temperatures, upper ocean heat content and low salinity barrier layer conditions. Ocean observations were consistent with suppressed hurricane‐induced upper ocean cooling, which could only be observed by underwater gliders, and showed that Hurricane Michael constantly experienced sea surface temperatures above 28°C. We carried out ocean Observing System Experiments, which demonstrate that the combined assimilation of in situ and satellite ocean observations into a numerical ocean model led to the most realistic representation of the ocean conditions. They also suggest that, when using the Cooper‐Haines (1996) method to assimilate altimetry observations, assimilating temperature observations is necessary to constrain the model upper ocean vertical structure. We also performed coupled hurricane‐ocean simulations to assess the impact of ocean initial conditions on forecasting Michael. These simulations demonstrate that the ocean conditions, in particular the high sea surface temperatures north of 24°N, played a crucial role in the intensification of Michael. Coupled simulations initialized with the most realistic ocean conditions, constrained by field and satellite observations, show a ∼56% error reduction in wind intensity prior to landfall compared to simulations initialized without data assimilation.
Generating Ensemble Streamflow Forecasts: A Review of Methods and Approaches Over the Past 40 Years
Authors: Troin Magali , Arsenault Richard , Wood Andrew W. , Brissette François , Martel Jean‐Luc
Published: May 2021

Ensemble forecasting applied to the field of hydrology is currently an established area of research embracing a broad spectrum of operational situations. This work catalogs the various pathways of ensemble streamflow forecasting based on an exhaustive review of more than 700 studies over the last 40 years. We focus on the advanced state of the art in the model‐based (dynamical) ensemble forecasting approaches. Ensemble streamflow prediction systems are categorized into three leading classes: statistics‐based streamflow prediction systems, climatology‐based ensemble streamflow prediction systems and numerical weather prediction‐based hydrological ensemble prediction systems. For each ensemble approach, technical information, as well as details about its strengths and weaknesses, are provided based on a critical review of the studies listed. Through this literature review, the performance and uncertainty associated with the ensemble forecasting systems are underlined from both operational and scientific viewpoints. Finally, the remaining key challenges and prospective future research directions are presented, notably through hybrid dynamical ‐ statistical learning approaches, which obviously present new challenges to be overcome in order to allow the successful employment of ensemble streamflow forecasting systems in the next decades. Targeting students, researchers and practitioners, this review provides a detailed perspective on the major features of an increasingly important area of hydrological forecasting.
A Simple Model to Predict Hydraulic Conductivity in Medium to Dry Soil From the Water Retention Curve
Authors: Peters Andre , Hohenbrink Tobias L. , Iden Sascha C. , Durner Wolfgang
Published: May 2021

The mathematical representation of the soil hydraulic properties is of central importance for modeling water, solute and energy transport in soils. The established models of the water retention and hydraulic conductivity curves account for capillary water retention and conductivity, but neglect water adsorption and water flow in films and pore corners. They are therefore suited for modeling flow and transport processes in the medium to wet moisture range, but are susceptible to failure in dry soil. The model system developed by Peters (2013, https://doi.org/10.1002/wrcr.20548; 2014, https://doi.org/10.1002/2014wr016107) and Iden and Durner (2014, https://doi.org/10.1002/2014wr015937) (PDI in the following) is a simple parametric framework that overcomes these structural shortcomings. However, it requires one additional parameter to scale the hydraulic conductivity curve in the moisture range where non‐capillary flow dominates. Measured conductivity data are required to determine this scaling parameter and to compute the hydraulic conductivity over the complete moisture range. In this contribution, we first show that the original PDI model is in close agreement with a comprehensive model for film conductivity in porous media. We then derive a physically‐based approach to predict the film conductivity from the water retention curve. This improved PDI model has the same number of parameters as established models and provides a complete prediction of the hydraulic conductivity curve including non‐capillary flow if water retention data and the saturated conductivity are known. Application to literature data covering a broad range of textures shows an improvement of the conductivity prediction by the factor five if compared to the van Genuchten/Mualem model.
Eyeing Explosive Ash Clouds from Above and Below
Authors: Tripathy-Lang Alka
Published: May 2021

Satellites in the sky combined with computers on the ground detect and track volcanic ash clouds, like those produced by Soufri�re St. Vincent in April, in near-real time.