Biodiversity Informatics
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Influence of Oscillation Drilling on Screw Purchase: A Comparative Biomechanical Study
No full textIntroduction. Oscillation drilling (OD) is commonly used in orthopaedic surgery to minimize soft tissue damage and control drill advancement, thereby reducing the risk of “plunging” through cortical bone. However, its effect on screw purchase compared to forward drilling (FD) remains unstudied. The purpose of this study was to compare maximal insertional torque (MIT), a proxy for screw purchase, following OD and FD in a synthetic bone model.
Methods. Pilot holes were drilled into synthetic femoral shaft models using OD and FD with three drill bit sizes (2.0 mm, 2.6 mm, and 3.2 mm). Corresponding self-tapping stainless-steel screws (2.7 mm, 3.5 mm, and 4.5 mm) were inserted into the pilot holes. MIT was measured during screw insertion using an axial torsion testing device, with five trials per condition.
Results. For 2.7 mm screws, mean MIT was 195.8 ± 47.0 N·cm (FD) versus 232.8 ± 11.8 N·cm (OD); for 3.5 mm screws, 336.8 ± 100.6 N·cm (FD) versus 357.4 ± 150.7 N·cm (OD); and for 4.5 mm screws, 943.5 ± 551.8 N·cm (FD) versus 1089.2 ± 232.2 N·cm (OD). No statistically significant differences in MIT were found between FD and OD across screw sizes (p = 0.85), although MIT increased significantly with the 4.5 mm screws (p <0.001).
Conclusions. OD and FD produced comparable screw purchase across screw sizes, suggesting that either technique may be used without compromising fixation strength in orthopaedic applications.
Species Distribution Modeling (SDM) of Variable Tawny Rajah (Charaxes bernardus hierax) in some unusual habitats of West Bengal, India: implications for conservation
No full textLepidopteran species serve as one of the most important pollinators in ecosystem and this species also coevolved with their nectaring plants. They regarded as one of the good indicators of ecosystem health due to their high sensitivity to the changes in environmental variables. There are numerous butterfly and moth species are found in India whose possible distribution in the geographic areas yet to be known. In our present study we try to find out the predicted distribution area of Variable Tawny Rajah (Charaxes bernardus hierax) in West Bengal by the use MaxEnt 3.4.4 program. It was observed that northern part of West Bengal consists of greater areas that contain suitable environmental conditions (maximum and moderate) than southern part of West Bengal. This type of study may helps to provide an idea about predicted distribution of Charaxes bernardus hierax in West Bengal and selection of conservation strategies for this butterfly species in particular geographical region
Inferring the invasive stage of Eurasian spider Myrmarachne formicaria in North America using species distribution models: Inferring the invasive stage of Myrmarachne formicaria using species distribution models
No full textFrom the Bible to Brecht\u27s Theatre: Translation, Intertextuality, or a New Narrative? The Judgement of Solomon and the Judgement of Azdak
Full text linkThere is a complex connection between justice and truth. Comparing Solomon’s story in the biblical Book of Kings with the The Caucasian Chalk Circle by Bertold Brecht, a different way of viewing those relations can be recognised. By changing the premise about what is considered the factual truth the logic inference on how to decide each case leads us to a different conclusion.
The choice of this principle depends on the ethics and on the concept of justice one has. This choice relies on historic and social context. The premises about motherhood are different in both the Bible and Brecht\u27s theatre. The question "who deserves a child" is replaced by "what is best for the child". AI algorithms could also help to understand what are we thinking while deciding these cases. Understanding how we think provides an opportunity for us to reframe our premises
Meilė Yra Visiems: The Evolution of Baltic Pride in Lithuania
Full text linkBaltic Pride started in 2010 with tremendous political and public opposition but is now a vibrant celebration and protest for the LGBTQ+ community in Lithuania. This project explores the evolution of Baltic Pride, one of Lithuania’s most important LGBTQ+ advocacy events, from 2010 to 2019. Scholars studying Pride in Eastern Europe find a variety of political and social factors—from European Union association to nationalism—affect Pride’s successful dissemination of rights. This project adds to this body of work by examining these factors over nine years and four Baltic Pride events in Lithuania. Examination of the European International Lesbian, Gay, Bisexual, Trans, and Intersex Association’s (ILGA) annual review, images from each year of Baltic Pride in Lithuania, and local news articles covering the events provide data to illustrate Pride in the social and political context of Lithuania. This project uses content analysis and thematic coding of ILGA Europe’s annual review, news articles, and images of each Baltic Pride to determine and then compare themes in each data source from 2010 to 2019. Exploration of Baltic Pride’s evolution reveals legal rights and social tolerance did not grow in parallel to this flourishing LGBTQ+ advocacy event. While Pride became increasingly popular, LGBTQ+ rights stalled in Lithuania’s legislature, and conservative factions continued widespread moral opposition of the Western LGBTQ+ rights framework. Overall, this research demonstrates the existence of a robust Pride event and LGBTQ+ advocacy movement did not indicate the overall LGBTQ+ rights situation in Lithuania
Coherent photoproduction of J/ψ mesons in ultraperipheral Pb–Pb collisions at CMS
Full text linkIn this contribution, we briefly describe the CMS results on J/ψ photoproduction in Pb–Pb collisions, in which the coherent J/ψ photoproduction cross section as a function of the photon-nucleus center-of-mass energy (WγN^Pb) was measured up to 400 GeV. The cross section is observed to plateau above WγN^Pb ≈ 40 GeV and up to 400 GeV, accessing very small Bjorken-x values of ≈ 6 × 10⁻⁵
Novel aspects of particle production in ultra-peripheral collisions
Full text linkOne of the hot topics in hadron physics is the study of the new exotic charmonium states and the determination of their internal structure. Another important topic is the study of the magnetic field produced in relativistic heavy-ion collisions and its effects on observables. In this note, we show that we can use ultra-peripheral collisions to address both topics.
We compute the cross section for the production of the D⁺D⁻ molecular bound state in photon-photon collisions and also the cross section for π⁰ production in the target induced by the magnetic field of the projectile. Both cross sections are sizeable, and their measurement would be very useful to elucidate the above-mentioned questions
Nijmegen Breakage Syndrome Complicated by Colon Cancer with Liver Metastasis: A Case Report
No full textBackground Nijmegen Breakage Syndrome (NBS) is a rare autosomal recessive DNA repair disorder that increases the risk of malignant tumors. Colorectal cancer is one of the common malignant tumors, and its liver metastasis is a focal point and challenge in the treatment of colorectal cancer.
Case presentation A 24-year-old male was diagnosed with Nijmegen Breakage Syndrome Complicated by Colon Cancer with Liver Metastasis: A Case Report
Conclusions Early identification of Nijmegen Breakage Syndrome (NBS) is crucial for making correct diagnoses, conducting genetic counseling, and for cancer screening, risk reduction, and selection of anticancer treatments.
Reckoning with Ecologies of Violence in Campus (Counter)Protests
Full text linkUniversities have become a focal point for contestation over the meaning of free speech as well as sites of violent protests connected to white supremacist speakers and anti-racist, anti-fascist activism. This paper investigates incarnations of violence operating during the recent resurgence of white supremacist organizing and counter-protest on college campuses, focusing on the case of the white supremacist attacks at the University of Virginia (U.Va.) and Charlottesville during August 2017 that culminated in the vehicular manslaughter of Heather Heyer. Past research often conceptualizes collective violence through a non/violent binary. In contrast, we argue that a relational and ecological model of violences (pl.) in social movement activity provides a stronger analysis. Using historical methods, we investigate three entangled incarnations of violence that contribute to contemporary moments of social dis/order: the offensive violence of white supremacists, the passive institutional violence of the (white supremacist) University, and active defensive violence on the part of counter-protesters in opposition to white supremacy. In conclusion, we discuss implications for research on violence in movements and contemporary (anti-)racist organizing, arguing that sociologists need to embrace more complex understandings of how violences manifest to address concerns about public safety