bluuebunny/crossref_metadata_2025_split huggingface dataset:
“Tie a Yellow Ribbon for the Working Man”: Environmental Conflict and Working-Class Politics in Oregon Timber Country, 1970–Present
Authors: Beda Steven C. 
Published: May 2023

Abstract
This article focusing on Oregon's timber industry contributes to recent efforts to chart the longer history of working-class conservativism, while also arguing that environmental change and conflict played a central role in shaping the political leanings and class identities of white, rural workers in resource extraction industries. It pays particular attention to Oregon's independent contracting and milling operations—small, often family-owned enterprises where the lines separating labor and capital were blurry at best and where bosses and employers alike viewed unions and working-class radicals with deep skepticism. Independent contractors became the dominant form of labor relations in Oregon's timber industry in the 1970s, largely because of changes to the forest wrought by decades of overharvests and the flight of large timber corporations. Workers unmoored by capital flight increasingly turned to independent contractors and thus began to believe that their economic futures depended on maintaining close ties with their employers. This sense grew stronger in the late 1980s and early 1990s, when Oregon environmentalists began seeking new restrictions on logging to protect the habitat of the northern spotted owl — restrictions that threatened to further reduce timber-based employment and exacerbate the economic problems of rural, timber-dependent communities. Workers and employers joined together in more visible coalitions, held together by a shared populist outrage at the urban, liberal, and affluent elite who, in their view, were responsible for their economic precarity. This view remains evident in Oregon today, where a new movement that joins bosses and workers, Timber Unity, has coalesced to fight proposed legislation intended to address climate change.
Sexually Dimorphic Pattern of Pain Mitigation Following Prophylactic Regenerative Peripheral Nerve Interface (RPNI) in a Rat Neuroma Model
Authors: Dehdashtian Amir , Timek Jagienka H. , Svientek Shelby R. , Risch Mary Jane , Bratley Jared V. , Riegger Anna E. , Kung Theodore A. , Cederna Paul S. , Kemp Stephen W. P. 
Published: May 2023

BACKGROUND:
Treating neuroma pain is a clinical challenge. Identification of sex-specific nociceptive pathways allows a more individualized pain management. The Regenerative Peripheral Nerve Interface (RPNI) consists of a neurotized autologous free muscle using a severed peripheral nerve to provide physiological targets for the regenerating axons.

OBJECTIVE:
To evaluate prophylactic RPNI to prevent neuroma pain in male and female rats.

METHODS:
F344 rats of each sex were assigned to neuroma, prophylactic RPNI, or sham groups. Neuromas and RPNIs were created in both male and female rats. Weekly pain assessments including neuroma site pain and mechanical, cold, and thermal allodynia were performed for 8 weeks. Immunohistochemistry was used to evaluate macrophage infiltration and microglial expansion in the corresponding dorsal root ganglia and spinal cord segments.

RESULTS:
Prophylactic RPNI prevented neuroma pain in both sexes; however, female rats displayed delayed pain attenuation when compared with males. Cold allodynia and thermal allodynia were attenuated exclusively in males. Macrophage infiltration was mitigated in males, whereas females showed a reduced number of spinal cord microglia.

CONCLUSION:
Prophylactic RPNI can prevent neuroma site pain in both sexes. However, attenuation of both cold allodynia and thermal allodynia occurred in males exclusively, potentially because of their sexually dimorphic effect on pathological changes of the central nervous system.
Cell-based optimization and characterization of genetically encoded location-based biosensors for Cdc42 or Rac activity
Authors: Mahlandt Eike K. , Kreider-Letterman Gabriel , Chertkova Anna O. , Garcia-Mata Rafael , Goedhart Joachim 
Published: May 2023

ABSTRACT
Rac (herein referring to the Rac family) and Cdc42 are Rho GTPases that regulate the formation of lamellipoda and filopodia, and are therefore crucial in processes such as cell migration. Relocation-based biosensors for Rac and Cdc42 have not been characterized well in terms of their specificity or affinity. In this study, we identify relocation sensor candidates for both Rac and Cdc42. We compared their (1) ability to bind the constitutively active Rho GTPases, (2) specificity for Rac and Cdc42, and (3) relocation efficiency in cell-based assays. Subsequently, the relocation efficiency was improved by a multi-domain approach. For Rac1, we found a sensor candidate with low relocation efficiency. For Cdc42, we found several sensors with sufficient relocation efficiency and specificity. These optimized sensors enable the wider application of Rho GTPase relocation sensors, which was showcased by the detection of local endogenous Cdc42 activity at assembling invadopodia. Moreover, we tested several fluorescent proteins and HaloTag for their influence on the recruitment efficiency of the Rho location sensor, to find optimal conditions for a multiplexing experiment. This characterization and optimization of relocation sensors will broaden their application and acceptance.
Reticular-Chemical Approach to Soft-Matter Self-Assembly: Why Are srs and noh Nets Realized in Thermotropics?
Authors: Saito Kazuya , Yamamura Yasuhisa 
Published: May 2023

Abstract
Interface geometry and skeletal graphs are two complementary characterizations of micro-phase separated organizations in soft matter. This paper explores the possibility of analyzing the latter instead of the former to gain insight into aggregation structures. Analyses of the ideality of vertices geometry (closeness to equiangular three-coordination) and the spatial homogeneity of the vertex distribution strongly suggest that the pair of noh nets, recently proposed for thermotropic liquid crystals of rodlike molecules without the interface between counter-chiral domains, is beneficial besides the srs twins if cubic symmetry is presumed as an experimental input.
The Radical Flank Revisited: How Regulatory Discretion Shapes the Effectiveness of Social Activism on Business Outcomes
Authors: Grandy Jake B. , Hiatt Shon R. 
Published: May 2023

Although scholarship has highlighted how stakeholders can influence business outcomes, few studies have examined how simultaneous, different tactics interact to impact firms. Critical to understanding this interaction is the radical flank effect, which asserts that the moderate and radical elements of social activist tactics can interact to either enhance or diminish a movement’s ability to accomplish its goals. However, research is unclear about when and whether the radical flank effect enhances or diminishes activist influence, nor has it empirically analyzed factors that influence the direction of the effect. To address these limitations, we explore one such factor—regulatory agency discretion, or regulators’ flexibility to interpret and implement public policies. Drawing on management and political sociology studies, we argue that discretion affects the salience of regulatory accountability to the public and thereby alters the radical flank effect on business outcomes in regulated markets. We analyze stakeholder opposition to U.S. hydroelectric power facilities from 1987 to 2019. The results show that high discretion enhances the radical flank effect and detrimentally affects business outcomes, whereas low discretion reverses the radical flank effect and favorably affects business outcomes. Funding: This work was supported by the Kauffman Foundation Doctoral Dissertation Fellowship and the Harvard Business School Division of Research. Supplemental Material: The online appendix is available at https://doi.org/10.1287/orsc.22.16104 .
Depression and associated factors in medical students in Acapulco during the COVID-19 pandemic: A cross-sectional study
Authors: Juanico-Morales Leticia , Nava-Aguilera Elizabeth , Morales-Pérez Arcadio , Morales-Nava Liliana , Valdez-Bencomo María Atocha , Emigdio-Vargas Abel , Serrano-de los Santos Felipe René , Andersson Neil 
Published: May 2023

BackgroundDepression is common in medical students and the Mexican state of Guerrero has the highest rates of depression in the country. Acapulco, the seat of the state medical school, is a tourist destination that experienced early high rates of COVID-19. The COVID-19 pandemic closed all schools in Mexico, obliging a shift from face-to-face to virtual education. In this new context, medical students faced challenges of online teaching including inadequate connectivity and access technologies. Prolonged isolation during the pandemic may have had additional mental health implications.AimAssess depression prevalence and its associated factors affecting medical students in Acapulco, Mexico during the COVID-19 pandemic.MethodsA cross-sectional survey of students of the Faculty of Medicine of the Universidad Autónoma de Guerrero, in November 2020. After informed consent, students completed a self-administered questionnaire collating socio-demographic, academic and clinical variables, major life events and changes in mood. The Beck inventory provided an assessment of depression. Bivariate and multivariate analyses relied on the Mantel-Haenszel procedure to identify factors associated with depression. We estimated the odds ratio (OR) and 95% confidence intervals.Results33.8% (435/1288) of student questionnaires showed evidence of depression in the two weeks prior to the study, with 39.9% (326/817) of young women affected. Factors associated with depression included female sex (OR 1.95; 95%CI 1.48–2.60), age 18–20 years (OR 1.36; 95%CI 1.05–1.77), perceived academic performance (OR 2.97; 95%CI 2.16–4.08), perceived economic hardship (OR 2.18; 95%CI 1.57–3.02), and a family history of depression (OR 1.85; 95%CI 10.35–2.54). Covid-19 specific factors included a life event during the pandemic (OR 1.99; 95%CI 1.54–2.59), connectivity problems during virtual classes and difficulties accessing teaching materials (OR 1.75; 95%CI 1.33–2.30).ConclusionsThe high risk of depression in medical students during the COVID-19 pandemic was associated with perceived academic performance and technical barriers to distance learning, in addition to known individual and family factors. This evidence may be useful for the improvement of programs on prevention and control of depression in university students.
Prevalence of osteoporosis in spinal surgery patients older than 50 years: A systematic review and meta-analysis
Authors: Fan Zhi-qiang , Yan Xin-an , Li Bao-feng , Shen Erdong , Xu Xin , Wang Hu , Zhuang Yan 
Published: May 2023

Introduction
In spine surgery, poor bone condition is associated with several complications like adjacent segment fractures, proximal junctional kyphosis, and screw loosening. Our study explored the prevalence of osteoporosis in spinal surgery patients older than 50 years through a systematic review and meta-analysis.

Methods
This systematic review and meta-analysis were conducted according to the PRISMA criteria. Three electronic databases, including PubMed, EMBASE, and Web of Science, were searched from inception to August 2022. We used the random-effects model to calculate the overall estimates, and the heterogeneity was measured using Cochran’s Q and I2 tests. Meta-regression and subgroup analyses were used to determine the source of the heterogeneity.

Results
Based on the inclusion and criteria, we chose ten studies with 2958 individuals for our analysis. The prevalence of osteoporosis, osteopenia, and osteoporosis/osteopenia in the spinal surgery patients was 34.2% (95%CI: 24.5%–44.6%), 43.5% (95%CI: 39.8%–47.2%), and 78.7% (95%CI: 69.0%–87.0%), respectively. Regarding different diagnoses, the prevalence was highest in patients with lumbar scoliosis (55.8%; 95%CI: 46.8%-64.7%) and the lowest in patients with cervical disc herniation (12.9%; 95%CI: 8.1%-18.7%). In age groups 50–59, 50–69,70–79, the prevalence was 27.8%, 60.4%, 75.4% in females, and 18.9%, 17.4%, 26.1% in males.

Conclusions
This study showed a high prevalence of osteoporosis in patients undergoing spine surgery, especially in females, people of older age, and patients who received degenerative scoliosis and compression fractures. Current osteoporosis screening standards for patients undergoing spine surgery may not be adequate. Orthopedic specialists should make more efforts regarding preoperative osteoporosis screening and treatment.
Inhibition of Wnt/β‐catenin signaling upregulates Nav1.5 channels in Brugada syndrome iPSC‐derived cardiomyocytes
Authors: Lu Aizhu , Gu Ruonan , Chu Cencen , Xia Ying , Wang Jerry , Davis Darryl R. , Liang Wenbin 
Published: May 2023

AbstractThe voltage‐gated Nav1.5 channels mediate the fast Na+ current (INa) in cardiomyocytes initiating action potentials and cardiac contraction. Downregulation of INa, as occurs in Brugada syndrome (BrS), causes ventricular arrhythmias. The present study investigated whether the Wnt/β‐catenin signaling regulates Nav1.5 in human‐induced pluripotent stem cell‐derived cardiomyocytes (iPSC‐CMs). In healthy male and female iPSC‐CMs, activation of Wnt/β‐catenin signaling by CHIR‐99021 reduced (p < 0.01) both Nav1.5 protein and SCN5A mRNA. In iPSC‐CMs from a BrS patient, both Nav1.5 protein and peak INa were reduced compared to those in healthy iPSC‐CMs. Treatment of BrS iPSC‐CMs with Wnt‐C59, a small‐molecule Wnt inhibitor, led to a 2.1‐fold increase in Nav1.5 protein (p = 0.0005) but surprisingly did not affect SCN5A mRNA (p = 0.146). Similarly, inhibition of Wnt signaling using shRNA‐mediated β‐catenin knockdown in BrS iPSC‐CMs led to a 4.0‐fold increase in Nav1.5, which was associated with a 4.9‐fold increase in peak INa but only a 2.1‐fold increase in SCN5A mRNA. The upregulation of Nav1.5 by β‐catenin knockdown was verified in iPSC‐CMs from a second BrS patient. This study demonstrated that Wnt/β‐catenin signaling inhibits Nav1.5 expression in both male and female human iPSC‐CMs, and inhibition of Wnt/β‐catenin signaling upregulates Nav1.5 in BrS iPSC‐CMs through both transcriptional and posttranscriptional mechanisms.
The Poincaré map of degenerate monodromic singularities with Puiseux inverse integrating factor
Authors: García Isaac A. , Giné Jaume 
Published: May 2023

Abstract
We consider analytic families of planar vector fields depending analytically on the parameters in

Λ

\Lambda

that guarantee the existence of a (may be degenerate and with characteristic directions) monodromic singularity. We characterize the structure of the asymptotic Dulac series of the Poincaré map associated to the singularity when the family possesses a Puiseux inverse integrating factor in terms of its multiplicity and index. This characterization is only valid in a restricted monodromic parameter space

Λ
\

Λ

∗

\Lambda \backslash {\Lambda }^{\ast }

associated to the nonexistence of local curves with zero angular speed. As a byproduct, we are able to study the center-focus problem (under the assumption of the existence of some Cauchy principal values) in very degenerated cases where no other tools are available. We illustrate the theory with several nontrivial examples.
“Part of me is teaching English”: probing the language-related teaching practices of an English-medium instruction (EMI) teacher
Authors: Liu Shuwen , Yuan Rui (Eric) 
Published: May 2023

Abstract
English-medium Instruction (EMI), that is, the use of the English language to teach academic subjects apart from English, is a growing phenomenon around the world. In view of the facilitative role of language in content learning, scholars have stressed the need to incorporate a language focus into EMI classrooms. One practical question that arises from this discussion is “How?” This study, through a telling case, intends to reveal the classroom practices of an EMI teacher who explicitly addresses different language issues during her content teaching in a psychology course in a Macau university. Drawing on multiple sources of data including field observations and interviews, the authors unearth three forms of the teacher’s language-related teaching practices – (1) teaching language for content comprehension, (2) teaching language for classroom engagement, and (3) teaching language through feedback. Specific teaching techniques are further identified and discussed in relation to various personal and contextual factors surrounding the EMI classroom. Practical insights are offered to individual EMI teachers in embracing a language focus to facilitate content learning in EMI programs across geographical contexts.
Digital forensics analysis based on cybercrime and the study of the rule of law in space governance
Authors: Chen Cheng , Dong Bin 
Published: May 2023

Abstract
With the rapid development of social informatization, the Internet has become an important channel for global information dissemination. The wireless network space and the real space are intertwined and have a significant impact on the political, economic, and cultural aspects of international society. For example, it can effectively solve the problem of information exchange between cities, regions, and countries. Wireless network crime and wireless network space security issues involve the development of information technology in various countries and, more importantly, involve all aspects of national security. In the age of science and technology, the current situation of cybercrime can be expressed by data as follows: the online crime rate is high. According to relevant statistics, nearly 5 million Internet users are involved in various cases every year due to the use of the Internet. This article starts with the digital forensics of wireless network crime and wireless network security management systems and discusses the composition, characteristics, existing problems, and future development directions of the current wireless network security management system. By comparing the wireless network security laws of China and the United States, using the latent Dirichlet allocation (LDA)-Gibbs model and the k-means algorithm to analyze the data, this article provides guidance for future research on wireless network space governance. The combination of digital forensics analysis based on cybercrime and space governance can improve the level of public security work. At present, the world has made some progress in cyberspace, but it still faces severe challenges. In the face of new situations and new measures, it is necessary to strengthen legislation, improve relevant systems, and strengthen supervision capacity. At the same time, it is necessary to establish perfect technical means and safeguards to ensure that this goal can be achieved.
Power quality enhancement using a novel SAPF control scheme employing high selectivity filter
Authors: Patnaik Sushree Sangita , Panda Anup Kumar 
Published: May 2023

AbstractSevere issues such as degradation of power quality and efficiency have surfaced in past few years due to extensive use of power electronic converters for conversion and control in power system. The shunt active power filter (SAPF) has gained attention as a competent solution among researchers. However, most SAPF control schemes render ineffective results under non-ideal supply conditions. A novel single-phasep–qscheme based on high selectivity filter (HSF) for extraction of reference compensation currents is proposed in this paper. A three H-bridges (3HB) voltage source inverter (VSI) topology of SAPF is considered and its dc-link voltage is regulated using an Enhanced Bacterial foraging optimization (BFO) based PI controller. This topology along with the proposed SAPF control scheme can guarantee improved APF performance as each phase of the three-phase four-wire system can be controlled independently. Extensive investigations are carried out using MATLAB/Simulink simulations followed by real-time performance verification in Opal-RT Lab. The effectiveness is assessed in terms of current harmonics, excessive neutral current and current unbalance compensation. The results obtained with proposed scheme when compared with conventional three-phase and single-phasep–qschemes employing low-pass filters (LPF) yield remarkably superior results under ideal, distorted and unbalanced supply and unbalanced loading conditions.
Vulcanization kinetics and mechanical properties of filled ethylene-vinyl acetate copolymer rubber composites
Authors: Xiao Changfa , Yang Qingshan , Shao Kefu , Li Yongjiang , Wan Songhan , He Xianru 
Published: May 2023

Abstract
The vulcanization reaction of ethylene vinyl acetate copolymer (EVM) rubber is fast, resulting in poor processing safety. EVM is often filled with flame-retardant fillers as insulating or sheathing material for wires and cables. Herein, the effects of flame-retardant magnesium hydroxide (Mg(OH)2), aluminum hydroxide (Al(OH)3) and of the traditional reinforcing fillers carbon black (CB) and silicon dioxide (SiO2) on the vulcanization kinetics of EVM were investigated. The vulcanization characteristics showed that the scorch time (T
10) of the unfilled EVM (KB), SiO2/EVM, Mg(OH)2/EVM, and Al(OH)3/EVM composites was about 1.75 min. T
10 of the CB/EVM composite was 2.22 min. Compared with KB, the activation energy (E

a
) increased by about 15 kJ/mol for CB/EVM composites and by about 5 kJ/mol for SiO2/EVM, Mg(OH)2/EVM and Al(OH)3/EVM composites. The results indicate that CB delays the vulcanization time of EVM rubber, slows down the rate of vulcanization reaction and improves the safety of vulcanization. The addition of SiO2, Mg(OH)2 and Al(OH)3 has little effect on the vulcanization reaction. The mechanical properties show that CB/EVM is more uniformly vulcanized and has the best mechanical properties with a tensile strength of 17.61 MPa and elongation at break of 404.58 %. Mg(OH)2/EVM and Al(OH)3/EVM samples have prominent vulcanization non-uniformity resulting in poor mechanical properties.
The diet of commensal Crocidura olivieri (Soricomorpha: Soricidae): predation on co-existing invasive Mus musculus suggested by DNA metabarcoding data
Authors: Galan Maxime , Bordes Anaïs , Gauthier Philippe , Kane Mamadou , Niang Youssoupha , Pierre Éric , Granjon Laurent 
Published: May 2023

Abstract

Crocidura olivieri is a large-sized shrew species showing a clear trend towards commensalism in West Africa, where it co-occurs and interacts with a number of rodent species in indoor small mammal communities. Among the rodents present is the house mouse Mus musculus, a major invasive species worldwide. We here test the hypothesis that M. musculus could be part of the diet of C. olivieri in a number of localities of Senegal where the two species are known to coexist. We use a metabarcoding approach based on the high-throughput sequencing of a 133 bp fragment of the COI gene, on DNA extracted from digestive tracts and faeces of a sample of 108 shrews. Beside insects of various groups (ants, beetles and cockroaches especially) representing usual items of shrew’s diet, and traces of domestic mammals and poultry that were probably scavenged, several species of rodents were evidenced. Among them, M. musculus was by far the best represented species, found in 17 of the 54 shrews where at least one prey taxon was identified. This finding tends to confirm the potential role of C. olivieri as predator of house mice, while highlighting the capacity of this species to adapt its diet to environmental conditions.
Three Memoranda of the 21st Dynasty at Deir el-Bahari
Authors: Barwik Mirosław 
Published: May 2023

Summary
Newly found hieratic graffiti in the temple of Hatshepsut at Deir el-Bahari enable shedding new light on the history of the area in the period of the 21st Dynasty. Three of them, written in the form of memoranda relating presumably to work done in the area, can be dated to the very end of the pontificate of the high-priest Menkheperre. There are good reasons to relate them to a burial or burials in the neighbouring Bab el-Gasus cache or else to the work done in this tomb at an early stage of its building history.