bluuebunny/crossref_metadata_2025 huggingface dataset:
Revision of the Neotropical spider genus Acanthoctenus (Araneae: Ctenidae: Acanthocteninae)
Authors: ARIZALA STEPHANY , LABARQUE FACUNDO MARTÍN , POLOTOW DANIELE
Published: January 2021

We revise the genus Acanthoctenus Keyserling, 1877 recognizing thirteen valid species, of which five are new species and two are re-validated. Further, we find one new synonymy and transfer one species. We describe Acanthoctenus alux sp. nov. from Guatemala, A. chickeringi sp. nov. and A. lamarrei sp. nov. from Panama, A. manauara sp. nov. from Brazil and A. torotoro sp. nov. from Bolivia. We revalidate Acanthoctenus dumicola Simon, 1906 stat. res. from Venezuela, and A. virginea (Kraus, 1955) stat. res., comb. nov. from El Salvador. We transfer Acanthoctenus mammifer to Viracucha mammifer (Mello-Leitão, 1939) comb. nov., from Brazil. Acanthoctenus maculatus Petrunkevitch, 1925 and Gephyroctenus kolosvaryi Caporiacco, 1947 are considered species inquirendae in Acanthocteninae and Ctenidae, respectively, and A. obauratus Simon, 1906 and A. rubrotaeniatus Mello-Leitão, 1947 are considered incertae sedis in Acanthocteninae and Acantheinae, respectively. We also describe for the first time the female of Acanthoctenus spiniger Keyserling, 1877, the type species of the genus. We provide illustrations of male and female diagnostic characters, genitalia, habitus, and measurements to support the genus re-description and further identification of its species. We yield a distributional map of the specimens recorded and the description of the natural history of Acanthoctenus manauara sp. nov.
Three new species of oribatid mites of the family Galumnidae (Acari, Oribatida) from South Africa
Authors: ERMILOV SERGEY G. , HUGO-COETZEE ELIZABETH A. , KHAUSTOV ALEXANDER A.
Published: January 2021

Three new species of oribatid mites of the family Galumnidae are described from soil and coniferous litter of Hogsback State Forest, Eastern Cape Province, South Africa. Pilogalumna hogsbackensis sp. nov. differs from Pilogalumna tenuiclava and P. ornatula by the presence of elongate oval postanal porose area and narrowly unilaterally dilated bothridial head. Pergalumna amatholensis sp. nov. differs from Pergalumna distincta by the presence of smaller body size, rounded rostrum, unilaterally dilated bothridial head, one pair of notogastral porose areas Aa, and the localization of opisthonotal gland opening and lyrifissure im. Stictozetes ihaguensis sp. nov. differs from all species of the genus by presence of bothridial seta with narrowly dilated head and median pore in both genders. An identification key to known species of Stictozetes is presented.
A review of Solierella Spinola, 1851 (Hymenoptera, Crabronidae) from Iran with description of four new species
Authors: SCHMID-EGGER CHRISTIAN , FALLAHZADEH MAJID , SADEGHI MARYAM
Published: January 2021

Species of Solierella Spinola, 1851 (Hymenoptera, Crabronidae) in Iran are revised and a key to species is given. The following species from southern Iran are described, based on females only: Solierella farsica Schmid-Egger sp. nov., Solierella kermania Schmid-Egger sp. nov., Solierella khafriensis Schmid-Egger sp. nov. and Solierella persica Schmid-Egger sp. nov. In addition, four species, S. insidiosa de Beaumont, 1964, S. pisonoides (Saunders 1873), S. syriaca de Beaumont, 1964 and S. verhoeffi de Beaumont, 1964 are recorded for the first time for fauna of Iran. Solierella compedita (Piccioli, 1869) could not be confirmed for the fauna of Iran, recognition characters of S. insidiosa and S. compedita are discussed. The number of Solierella species in Iran raises to ten.
Four new species of Scydmaeninae and Pselaphinae (Coleoptera: Staphylinidae) from Yunnan, China
Authors: LI QI-QI , YIN ZI-WEI
Published: January 2021

Four new staphylinid species from China are described, based on material collected from Tangli Mountain, Yunnan: Euconnus (s. str.) vertexalis Li & Yin, sp. nov. and Syndicus (Semisyndicus) wangjisheni Li & Yin, sp. nov. of the subfamily Scydmaeninae, and Tmesiphorus tanglimontis Li & Yin, sp. nov. and Tribasodites tubericeps Li & Yin, sp. nov. of the subfamily Pselaphinae. Illustrations of the habitus and major diagnostic characters of each new species are provided.
Validation of the Pleistocenic ghost shrimp Callichirus santensis Hernáez, Buchmann & Santana† (Decapoda: Callianassidae) from the southwestern Atlantic
Authors: HERNÁEZ PATRICIO , BUCHMANN FRANCISCO SEKIGUCHI , SANTANA WILLIAM
Published: January 2021

Hernáez et al. (2020) described a new fossil species of ghost shrimp, Callichirus santensis, from the Upper Pleistocene Cananéia Formation, southeast Brazil. The article in which C. santensis† was originally proposed was published online only (Hernáez et al., 2020), but did not include a ZooBank registration number (LISD), required for validation of the new names in electronic-only publications [vide Art. 8.5.3 of the amended Code of the International Commission on Zoological Nomenclature (ICZN, 1999, 2012)]. Therefore, the present note serves to validate the name Callichirus santensis by fulfilling the ICZN conditions for nomenclatural availability.
Evaluating the Diurnal and Semidiurnal Cycle of Precipitation in CMIP6 Models Using Satellite- and Ground-Based Observations
Authors: Tang Shuaiqi , Gleckler Peter , Xie Shaocheng , Lee Jiwoo , Ahn Min-Seop , Covey Curt , Zhang Chengzhu
Published: January 2021

The diurnal and semidiurnal cycle of precipitation simulated from CMIP6 models during 1996–2005 are evaluated globally between 60°S and 60°N as well as at 10 selected locations representing three categories of diurnal cycle of precipitation: 1) afternoon precipitation over land, 2) early morning precipitation over ocean, and 3) nocturnal precipitation over land. Three satellite-based and two ground-based rainfall products are used to evaluate the climate models. Globally, the ensemble mean of CMIP6 models shows a diurnal phase of 3 to 4 h earlier over land and 1 to 2 h earlier over ocean when compared with the latest satellite products. These biases are in line with what were found in previous versions of climate models but reduced compared to the CMIP5 ensemble mean. Analysis at the selected locations complemented with in situ measurements further reinforces these results. Several CMIP6 models have shown a significant improvement in the diurnal cycle of precipitation compared to their CMIP5 counterparts, notably in delaying afternoon precipitation over land. This can be attributed to the use of more sophisticated convective parameterizations. Most models are still unable to capture the nocturnal peak associated with elevated convection and propagating mesoscale convective systems, with a few exceptions that allow convection to be initiated above the boundary layer to capture nocturnal elevated convection. We also quantify an encouraging consistency between the satellite- and ground-based precipitation measurements despite differing spatiotemporal resolutions and sampling periods, which provides confidence in using them to evaluate the diurnal and semidiurnal cycle of precipitation in climate models.
Change in the Occurrence Frequency of Landfalling and Non-Landfalling Tropical Cyclones over the Northwest Pacific
Authors: Xiao Mingzhong
Published: January 2021

Understanding the tropical cyclone (TC) activity changes in response to climate change is of great importance for disaster mitigation and climate change adaptation. Change in the annual occurrence frequency of landfalling and non-landfalling weak, strong, and super TCs during 1980–2018 was analyzed. Results indicate that the super TCs have been more likely to make landfall in the northwest Pacific since 1980. Using an empirical orthogonal function–based method proposed to decompose the space–time field of TC occurrence into different patterns, the anthropogenic influence on the change in super TC occurrence was detected when the impacts of El Niño–Southern Oscillation (ENSO), the Pacific meridional mode (PMM), and the interdecadal Pacific oscillation (IPO) were separated. Results further show that TCs forming in the sea surface near land (6°–21°N, 130°–137°E) have been more likely to intensify to super TCs in recent years. These intensified TCs tend to favor subsequent landfall, which may be the reason for the increase in landfalling super TCs. The intensification of TC is mainly due to the increase in the intensification rate, which increases with increased sea surface temperature (SST), especially during the stronger wind periods. Along with the change in the occurrence of landfalling super TCs, the landfalling locations of super TCs also changed. For example, western South China, Southeast China, and Japan are facing an increase in landfalling super TCs. The destructiveness of super TCs to these economically developed and highly populated regions is great; more attention therefore should be paid to mitigate TC disasters.
Playing Politics: How Sabarimala Played Out on TikTok
Authors: Vijay Darsana , Gekker Alex
Published: January 2021

TikTok is commonly known as a playful, silly platform where teenagers share 15-second videos of crazy stunts or act out funny snippets from popular culture. In the past few years, it has experienced exponential growth and popularity, unseating Facebook as the most downloaded app. Interestingly, recent news coverage notes the emergence of TikTok as a political actor in the Indian context. They raise concerns over the abundance of divisive content, hate speech, and the lack of platform accountability in countering these issues. In this article, we analyze how politics is performed on TikTok and how the platform’s design shapes such expressions and their circulation. What does the playful architecture of TikTok mean to the nature of its political discourse and participation? To answer this, we review existing academic work on play, media, and political participation and then examine the case of Sabarimala through the double lens of ludic engagement and platform-specific features. The efficacy of play as a productive heuristic to study political contention on social media platforms is demonstrated. Finally, we turn to ludo-literacy as a potential strategy that can reveal the structures that order playful political participation and can initiate alternative modes of playing politics.
A Tale of Two Cities: What’s Driving the Firearm Mortality Difference in Two Large Urban Centers?
Authors: Friedman Jessica K. , Mytty Elizabeth , Ninokawa Scott , Reza Tara , Kaufman Elinore , Raza Shariq , Horwitz Ben , Asher Jeff , Taghavi Sharven , Guidry Chrissy , Duchesne Juan
Published: January 2021

Introduction

Per police data, the case fatality rate (CFR) of firearm assault in New Orleans (NO) over the last several years ranged between 27% and 35%, compared with 18%-22% in Philadelphia. The reasons for this disparity are unknown, and potentially reflect important system differences with broader implications for the reduction of firearm mortality.

Methods

A retrospective analysis of police and city-specific trauma databases between 2012 and 2017 was performed. Victims of firearm assaults within city limits were included. Univariate analysis was performed using chi-square for categorical and t-test for continuous variables. Bivariate analysis was conducted using logistic regression.

Results

Per police data, the CFR of firearm assault was 31% in NO and 20% in Philadelphia. However, per trauma registry data, the CFR of firearm assault was 14% in NO and 25% in Philadelphia. Patients in Philadelphia were older, had higher injury severity score, and lower blood pressure. Patients in NO had higher rates of head injury. 51% of patients in Philadelphia arrived via police compared to <1% in NO. There was no mortality difference between police and emergency medical service (EMS) transport. Longer EMS prehospital times were associated with increased mortality in NO but not Philadelphia. A much larger percentage of patients died on-scene in NO than Philadelphia.

Conclusions

Our findings suggest that the major driver of increased mortality following firearm assault in NO compared with Philadelphia is death prior to the arrival of first responders. Interventions that shorten prehospital time will likely have the greatest impact on mortality in NO. This should include the consideration of police transport.
What Does It Mean to Be Mexican (American)? Exploring Youth Ethnic Identity
Authors: Hashtpari Halleh , Tao Karen W. , Merced Kritzia , Arvizo-Zavala Joél , Hernández James
Published: January 2021

Children’s racial (e.g., Black, White, Indigenous) and ethnic (e.g., Mexican) identity can influence psychological, social, and academic outcomes. Despite evidence that awareness of racial–ethnic marginalization begins during preadolescence, there is minimal research examining how children talk about identity at this age. The purpose of this study was to examine how preadolescent Mexican American youth conceptualize “who they are.” Specifically, we used the Ethnic-Perspective Taking Ability interview protocol to explore how Mexican American youth, ages 9–11, understand their ethnicity. Thematic analysis revealed four themes: Self as “Other,” Self as Invisible, Self as a Politicized Being, and Self as Community. Participants discussed feeling out of place, often feeling excluded by Whiteness, and needing to code switch. These experiences also were juxtaposed with a sense of ethnic pride and comfort. Implications for practice, advocacy, education, and research are offered.
Investigation of electrical properties of hybrid nanocomposites containing different fillers on pressure sensor applications under different loading
Authors: Kasım Hasan , Demir Büşra
Published: January 2021

Conductive elastomeric nanocomposites (CEMs) were prepared in two stages to control the precision of pressure sensors. Carbon-based nanofillers such as multi-walled carbon nanotubes (MWCNT) or graphene (GR) were added to the rubber matrix. For Rubber/MWCNT composites, unfunctionalized (U-MWCNT) and –COOH functionalized MWCNT (F-MWCNT) fillers were synthesized. The properties of the CEMs and the synergistic improvements between the fillers and rubber matrix in composites were also investigated. SEM images show that F-MWCNT fillers were dispersed homogeneously in the composites and they interacted with rubber better than other carbon fillers. The piezoresistivity properties of the CEMs before and after compression were determined using the four-probe method by cyclic loading in 1 mm increments between 1.5 mm and 3.5 mm. F-MWCNT filled composites had higher strength than others when they were compressed by 2.5 mm. The F-MWCNT and GR filled nanocomposites possessed the best resistivity for pressure sensors when compressed at 2.5 mm (for F-MWCNT 1.1E + 08 Ω, GR 5.28E + 06 Ω). These nanocomposites are promising pressures sensors for air suspension systems.
A Look Back: Church, state, and Kappan
Authors: Preston Teresa
Published: January 2021

In this monthly column, Kappan managing editor Teresa Preston looks back at how the magazine has covered questions related to the role of religion in public schools. Authors considered how Supreme Court rulings affected school policy and practice, whether religious instruction is necessary for promoting positive values, and how to encourage respect in a religiously diverse world.
Toward a new agenda for education research
Authors: Tseng Vivian
Published: January 2021

A new presidential administration brings with it opportunities to reinvest in the research infrastructure at the U.S. Department of Education. Vivian Tseng offers suggestions for how to do so in a way that responds to the needs of students, educators, and communities, particularly those who have been marginalized.
Under the Law: How is your community depicted in the curriculum? Who decides?
Authors: Kim Robert
Published: January 2021

A case in California reaffirms that courts are reluctant to intervene when families are concerned about school curricula. In CAPEEM v. Torlakson, parents of Hindu children complained that the state’s history and social science standards are framework discriminated against them by inaccurately and disparingingly representing their faith. Bob Kim describes the plaintiffs’ arguments, the case’s journey through the courts, and how the court’s ruling against the plaintiffs relates to other cases involving objections to school curricula.
On the long-run solution to aggregate housing systems
Authors: Meen Geoffrey , Mihailov Alexander , Wang Yehui
Published: January 2021

This paper explores the properties of dynamic aggregate housing models. In conventional models, in response to demand shocks the primary adjustment mechanism is through prices and changes in housing supply. However, the size of the supply response depends on the price elasticity of supply and in countries such as the UK where the elasticity is low, house prices can rise sharply, worsening affordability. But this ignores the roles of housing risk and credit markets which affect the user cost of capital and the paper demonstrates that models that explicitly introduce a housing risk premium have an additional price stabiliser. The importance is shown through stochastic simulations; these simulations also demonstrate that conventional models used for forecasting and policy analysis may overstate future house price growth.
Thinking through people: The potential of volunteered geographic information for mobility and urban studies
Authors: Howe Lindsay Blair
Published: January 2021

Despite the ‘mobility turn’ in urban studies, there is surprisingly little research into the role people’s everyday movements play in driving urbanisation processes. As this paper discusses, one reason this has not occurred is because understanding this relationship requires both quantitative and qualitative knowledge, including geospatial locations and patterns as well as why people choose to move the way they do. Few studies employ mixed methods to this end; instead, many quantitative approaches focus on the use of big data and many qualitative approaches remain focused on sites themselves rather than the movements between them. This methodological gap can preclude operationalising findings and proves particularly detrimental when research is conducted into areas with high levels of poverty and inequality. In response, this paper presents a mixed-methods approach to studying urbanisation, using volunteered geographic information (VGI) to map regional-scale movements in the Gauteng City-Region (GCR). Exploiting the potential of smartphone technology, this methodology operates at the interstice of quantitative and qualitative research, describing both macro-scale mobility patterns and the micro-scale decisions behind them. Using the case study of the GCR, it highlights movement as a strategy for those living in poverty, who can utilise the entire region as a resource to subvert entrenched inequality. ‘Thinking through people’ suggests that a new ontology of categories describing urbanisation processes in terms of movement could connect empirical research into poverty and inequality to theory, and be used to create an epistemology of the urban from below. Thus, this paper contributes to advances in urban studies methods as well as to debates on urbanisation, relational poverty and socio-spatial inequality.
Big data, accessibility and urban house prices
Authors: Bourassa Steven C , Hoesli Martin , Merlin Louis , Renne John
Published: January 2021

Big data applications are attracting increasing interest among urban researchers. One unexplored question is whether the inclusion of big data accessibility indices improves the accuracy of hedonic price models used for residential property valuation. This paper compares a big data index with an index derived from a regional travel demand model developed by local transportation planning agencies and traditional measures of accessibility defined as distances to employment centres. Controls for submarkets and a combined spatial autoregressive and spatial error model are also assessed as tools for capturing the value of location. Using single-family residential transactions from the Miami, Florida, metropolitan area, the study’s main conclusion is that the big data accessibility measure does not add meaningful explanatory or predictive power. In contrast, the spatial autoregressive and error model outperforms the other options considered.
Measuring Tourism Intensification in Urban Destinations: An Approach Based on Fractal Analysis
Authors: Encalada-Abarca Luis , Ferreira Carlos Cardoso , Rocha Jorge
Published: January 2021

This article provides an approach to the geographic and quantitative interpretation of tourism intensification, drawing on the concepts of fractals, and fractal dimension ( D). Exploring tourism intensification in Lisbon, we first present a geographic construct that represents the spatial layout of tourism based on crowd-contributed spatial signatures advocating a collective sense of the “tourist city”. Then, we assess the tourism-related intensification patterns, based on the estimation of D, for different years. Significant statistical associations can be found between D and tourism intensification across the urban space. Intensification on tourism cores is more homogeneously distributed, yet it evolves into a more compact form of spatial organization. On the other hand, there is a decline in the degree of homogeneity of tourism intensification from tourism cores to the periphery. This approach has also proved useful for exploring tourism intensification in destinations at different hierarchical levels, such as in Lisbon and Oporto metropolitan areas.
Defect identification in magnetic tile images using an improved nonlinear diffusion method
Authors: Ben Gharsallah Mohamed , Ben Braiek Ezzedine
Published: January 2021

Visual inspection of surface defects is a crucial step in the magnetic tile manufacturing process. Magnetic tile images suffer from a non-uniform illumination, texture and noise that disperse irregularly in flawless image areas. As a result, common edge detection and threshold segmentation techniques fail to identify these kinds of defects. In this work, we present a robust algorithm for defect identification in magnetic tile images. The proposed method is based on a new anisotropic diffusion filtering model. Unlike traditional anisotropic diffusion models that take into account only gradient magnitude information, the proposed model combines together gradient magnitude and a new local difference image feature. The aim is to remove bright shapes and undesirable artifacts in the faultless region in magnetic tile images. In addition, the method activates a smoothing process in the flawless region to homogenize the background and simultaneously a sharpening in the defect boundaries to highlight anomalies. Experimental results on a number of magnetic tiles samples containing different types of defects have demonstrated the efficiency of the proposed diffusion method.
Optimal model predictive rejection control for nonlinear parabolic trough collector with lumped disturbances
Authors: Gao Xian-hua , Wei Shangshang , Su Zhi-gang
Published: January 2021

It is challenging and crucial to achieve unbiased tracking control for parabolic trough collector field as it is vulnerable to various types of disturbances or uncertainties such as unmeasured external disturbances, parameter perturbation and model mismatch. To solve this issue, an optimal model predictive rejection control strategy is put forward in a composite designed manner, in which all disturbances/uncertainties are dealt with as lumped disturbances. A generalized extended state observer is firstly employed to estimate the lumped disturbances, and then a feedback controller is devised based on optimal model predictive control to compensate the influences of the lumped disturbances on output. Stability analysis of the closed-loop system has been presented. It shows that the proposed composite controller can track given references without offset in the presence of lumped disturbances while not sacrificing its nominal performance in the absence of disturbances. Simulations conducted on a numerical example and a practical application for parabolic trough collector validate our conclusions.
Spontaneous Bilateral Facial Paralysis Secondary to Metastatic Breast Cancer
Authors: King Jackson , Virani Farrukh R. , Thomas Ryan , Squires Lane
Published: January 2021

Sudden onset, bilateral facial paralysis is a rare clinical entity, representing less than 2% of all diagnoses of facial nerve paralysis. The differential for these patients is necessarily broad and includes numerous etiologies. Metastatic breast carcinoma to the bilateral parotid glands is also exceedingly rare with only 2 reported case reports noted in the literature, neither of which demonstrated facial nerve paralysis. Here, we report the only known occurrence of a patient presenting with synchronous bilateral facial nerve paralysis secondary to metastatic breast carcinoma to the bilateral parotid glands. This exceedingly rare clinical presentation was further confounded by the presence of autoimmune antibodies, highlighting the importance of the diagnostic process and maintaining broad clinical suspicion.
Barriers to Obtaining a Timely Diagnosis in Human Papillomavirus–Associated Oropharynx Cancer
Authors: Karp Emily E. , Yin Linda X. , Moore Eric J. , Elias Anna J. , O’Byrne Thomas J. , Glasgow Amy E. , Habermann Elizabeth B. , Price Daniel L. , Kasperbauer Jan L. , Van Abel Kathryn M.
Published: January 2021

Objective

Failure to recognize symptoms of human papillomavirus–associated oropharyngeal squamous cell carcinoma (HPV(+)OPSCC) at presentation can delay diagnosis and treatment. This study aims to identify patient factors and provider patterns that contribute to delayed diagnosis.

Study Design

Retrospective case series.

Setting

Tertiary care center.

Methods

Patients with HPV(+)OPSCC receiving intent‐to‐cure treatment from 2006 to 2016. Clinical data, workup, and care timelines were abstracted. Univariate and multivariable linear regressions were performed to determine associations.

Results

Of 703 included patients, 627 (89%) were male, and mean (SD) age at diagnosis was 59 (9) years. The mean (SD) delay to diagnosis was 148.8 (243.51) days, with an average delay of 63 (154.91) days from symptom onset to first presentation and 82.8 (194.25) days from first presentation to diagnosis. Most patients visited at least 2 providers (n = 546, 78%) before diagnosis and saw their primary care physician at first presentation (n = 496, 71%). The most common imaging and biopsy obtained before diagnosis was neck computed tomography (n = 391, 56%) and neck fine‐needle aspiration (n = 423, 60%), respectively. On multivariable linear regression, being a homemaker, being a current smoker, seeing 3 or more providers, and getting a magnetic resonance imaging scan were associated with significant delays in diagnosis (P <. 01, all). Treatment with antibiotics and a suspicion for HPV(+)OPSCC at first presentation were associated with decreased delays in diagnosis (P <. 01, both).

Conclusions

Patient delays in seeking medical attention and provider delays in recognizing the appropriate diagnosis both contribute to delays of care in HPV(+)OPSCC. Improved patient and provider education is necessary to expedite the diagnosis of HPV(+)OPSCC.
The King’s Jasper Quarry, Lehigh County, Pennsylvania
Authors: Carr Kurt W , Stewart R Michael , Schindler William
Published: January 2021

The King’s Quarry site (36LH2), located in the Reading Prong region of eastern Pennsylvania, is one of six remaining jasper quarries mapped by the late James Hatch and reported in 1994. Several archaeological investigations were conducted there in preparation for a housing development. These investigations included controlled surface collections, hand excavated test units, and extensive mechanical investigations of mining pits. Pre-Contact era quarry pits were profiled in what appeared to be the most intensively mined area of the site. Several charcoal samples were collected from the profile which documented a prehistoric excavation over 7 m deep. A Paleoindian fluted preform along with other typical Paleoindian tools were recovered from the perimeter of the quarry pit. We present the results of the field testing and an extensive analysis of the artifacts. Despite the jumble of overlapping mining pits and historic farming activities, the site retains both horizontal and vertical integrity.
Olive oil effectively mitigates ovariectomy-induced marrow adiposity assessed by MR spectroscopy in estrogen-deficient rabbits
Authors: Liu Yin , Tan Huayi , Huang Can , Li Lifeng , Wu Sijie
Published: January 2021

Background

Polyphenols in extra virgin olive oil (EVOO) have been found to reduce the expression of PPARγ2, inhibit adipocyte differentiation, and enhance the formation of osteoblasts from bone marrow stem cells. However, the underlying mechanisms of their action remain unknown.

Purpose

To determine the sequential effects of EVOO on marrow fat expansion induced by estrogen deprivation using 3.0-T proton magnetic resonance (MR) spectroscopy in an ovariectomy (OVX) rabbit model of postmenopausal bone loss over a six-month period.

Material and Methods

A total of 45 female New Zealand rabbits were equally divided into sham-operation, OVX controls, and OVX treated with EVOO for six months. Marrow fat fraction was measured by MR spectroscopy at baseline conditions, and three and six months postoperatively, respectively. Serum bone biomarkers, lumbar and femoral bone mineral density, microtomographic parameters, biomechanical properties, and quantitative parameters of marrow adipocytes were studied.

Results

OVX was associated with marrow adiposity in a time-dependent manner, accompanied with increased bone turnover and impaired bone mass and trabecular microarchitecture. In OVX rabbits, EVOO markedly alleviated trabecular bone loss and reduced the accumulation of lipid droplets including adipocyte size, density, and areas of fat deposits in the bone marrow. EVOO prevented such changes in terms of both marrow adiposity and bone remodeling.

Conclusion

Early EVOO treatment may exert beneficial effects on bone by modulating marrow adiposity, which would support their protective effect against bone pathologies.
Delayed onset bleed after percutaneous kidney biopsy: is it the same as early bleed?
Authors: Bhadauria Dharmendra , Jose Leena , Kushwaha Ravi , Kaul Anupma , Nandan Raghu , Singh Vivek , Prasad Narayan
Published: January 2021

Background

While the majority of bleeding complications after a percutaneous kidney biopsy (PKB) occur early (≤24 h), delayed onset bleeding complications (>24 h) have been rarely reported and can be catastrophic for the patient.

Purpose

To describe the incidence, risk factors, and outcomes of delayed bleeding complications after PKB.

Material and Methods

We retrospectively studied native and graft kidney biopsies in patients who developed delayed bleeding complications (>24 h) after the biopsy performed in the Department of Nephrology and Renal Transplantation of a tertiary care medical institution in north India between January 2014 to December 2018.

Results

Of the 4912 renal biopsies reviewed, 20 patients (16 men, 4 women; 0.40%) had a delayed biopsy bleeding complication. Of these patients, 95% had major bleeding complications requiring blood transfusions and 85% needed intervention like gelfoam/coil embolization. Despite intervention, one patient (5%) had mortality due to complications of bleeding and sepsis. When compared to a control group of patients with early biopsy bleed, patients with the delayed biopsy bleed had similar demographic and clinical profiles except for higher pre-biopsy hemoglobin and lower systolic and diastolic blood pressure.

Conclusion

A post-PKB delayed onset bleed is not uncommon, and the vast majority of these patients had major bleeding complications requiring blood transfusions and/or intervention like embolization. They had a similar demographic and clinical profile presentation as early bleed patients. Meticulous outpatient monitoring and patient education after discharge may be useful to detect this complication promptly and to intervene early to have good patient outcome.
Prototype of Customized Mobile Application for Obstructive Sleep Apnea (OSA) Risk Assessment During the COVID-19 Pandemic
Authors: Kapoor Priyanka , Sengar Poonam , Chowdhry Aman
Published: January 2021

Obstructive sleep apnea (OSA), the most prevalent form of sleep-related breathing disorder (SRBD), is associated with cardiovascular, neurocognitive, and metabolic complications. Evidence suggests that these comorbidities are also risk factors for enhanced severity in COVID-19 patients. Hence, initial diagnosis or screening of OSA-risk is a major requirement of current times, which can be fulfilled by a noncommercial, easily accessible mobile application for self-assessment of OSA-risk. The current article mentions a prototype of an “OSA-Risk Assessment Tool,” a mobile application developed after prior testing of needs analysis and comprising various interfaces for OSA-risk assessment in all age groups, and further refined for user applicability through a cognitive, pluralistic walkthrough and heuristic evaluation by the authors and four volunteers. It has huge scope of application in orthodontic clinics, primary healthcare centers in middle and low-income strata of developing countries, and multiple educational and licensing institutions for the larger benefit of the society.
Complexity explained: The dialectical position between theory and practice. Theoretical group analytic concepts and clinical examples
Authors: Papanastassiou Maria
Published: January 2021

I present below an attempt to understand complexity theory and the dialectical relationship between theory and group analytic practice. These are often concepts difficult to make sense of as they are rarely illuminated with clinical material for the reader or the trainee group analyst to comprehend. After the introduction of the Kantian and Hegelian dialectic and its use to understand group analytic concepts, I move on to the complexity theory and attempt to illustrate its significance with a clinical example from a small group analytic group. Cavafis’s celebrated poem ‘Ithaka’, is used as a metaphor for the utmost importance of the splendid interpersonal and transpersonal journey in group analysis with all its challenges and gains that this brings to the individual and to the group as a whole as the emphasis is on the process (journey) rather the destination (Ithaka).
Early Analgesic Efficacy of Morphine, Butorphanol, Lidocaine, Bupivacaine or Carprofen After Periodontal Treatment in Dogs
Authors: Raušer Petr , Fichtel Tomáš
Published: January 2021

The early effectiveness of 5 analgesics was investigated after periodontal treatment. Dogs were assigned to 6 groups (n = 14 each). A prospective, randomized and blinded clinical study was performed. Before anesthesia was induced, butorphanol, morphine, carprofen and saline were administered. After induction, a maxillary and mandibular block was performed with lidocaine or bupivacaine. Painful periodontal therapies were performed. Two hours after the administration of analgesics and after anesthesia reversal, pain was scored using the Visual Analog Scale for pain (VAS) and the modified University of Melbourne Pain Score (UMPS). Blood glucose and cortisol levels were measured prior to analgesic administration and again 2 hours later. Rescue analgesia was provided when the VAS exceeded 50 mm or the UMPS exceeded 14 points. Rescue analgesia was required in one patient in the morphine group and one in the carprofen group. The VAS values were significantly lower in the butorphanol group compared to those of the saline group and in the bupivacaine group vs. those in the saline and lidocaine groups. Significantly lower UMPS values were obtained in the bupivacaine group compared to those in the saline, butorphanol and lidocaine groups and in the carprofen group vs. those in the saline and lidocaine groups. Significantly higher serum cortisol values were found in the lidocaine group compared to those in the saline, bupivacaine and carprofen groups. Administration of carprofen or the use of nerve blocks with bupivacaine improved analgesia after periodontal treatment more than did butorphanol, morphine or nerve blocks using lidocaine.
Research on surface properties of Ti-6Al-4V alloy by multi-ultrasonic rolling
Authors: Wang Pengcheng , Pan Yongzhi , Liu Yanjie , Fu Xiuli , Li Hongxia
Published: January 2021

The main purpose of this paper was to investigate the effect of the multiple ultrasonic surface rolling process (USRP) on the surface mechanical properties and wear mechanism of Ti-6Al-4V. Firstly, X-ray diffraction (XRD) microscopic analysis, work hardening and residual stress were used to measure and characterize the surface performance by USRP. The friction coefficient and wear morphology were obtained by the scanning electron microscope (SEM), three-dimension (3D) white light interferometer and energy dispersive spectrometer (EDS). The results showed that the material surface mechanical properties was effectively improved by the USRP, and the surface grains were refined to form nanoscale. It also can be found that the wear resistance of the material surface was effected by the surface mechanical properties. With the increase of processing, the main wear mechanism changed from delamination-based oxidation wear to adhesive wear with the increase of processing.
Maintaining active safety performance through appropriate vehicle bumper refinishing: Case study for Korean minor damage repair standards
Authors: Lee Jae-Won , Kim Nam-Hyung , Kim Tae-Won
Published: January 2021

The Korean government has established “minor damage repair standards” that require repair without replacement when vehicle bumpers can be repaired to reduce plastic bumper waste. However, when blind spot detection and lane change assist systems, active safety systems, are installed, there is a controversy over whether the standards can be applied to restore the minor damage bumper covers because the short-range radar sensor for them is located inside each corner of the rear bumper. Therefore, it is necessary to identify the difference between original and repair conditions to confirm the repair methods that can meet the government’s standards while maintaining the safety performance of the systems. The experiments were designed two sectors, most vehicle bumper cover repair methods were produced as test specimens which are used for static tests to compare with the new vehicle state, and based on the results, specimens needed field confirmation were prepared and dynamic tests were conducted. The microscopic performance difference of the safety systems according to the refinishing was determined by analyzing the dynamic test results using null-hypothesis significance testing and analysis of variance methods. The results of the tests showed that applying a filler to form the bumper surface does not cause performance problems if the radar signal transmission area of 10 m2 is avoided. In the case of paintwork on the radar signal area, two or three layers of paint did not show any difference from the manufacturer’s bumper, therefore paint layer scratches can be refinished up to twice. However, if metal-colored paint layers are three as a result of paintwork twice, the maximum detection angle performance is adversely affected. Through this study, new experimental methods were suggested for identifying the safety performance of advanced driver assistance systems when various repair methods are applied to the plastic bumper cover.
Development and model-based calibration of the lateral controllers “steer-by-angle” and “steer-by-torque” of a lane keeping assistance system
Authors: Stubler Timo , Niegl Matthias , Förster Martin , Pfeffer Peter E , Abhishek Ravi
Published: January 2021

Advanced Driver Assistance Systems (ADAS) such as Lane Keeping Assistance (LKA) systems are in the focus of current vehicle developments. Of special interest is the calibration task, which plays an increasingly decisive role in early development stages. At this point it is essential to analyze the pre-calibrated controller concepts by appropriate simulation methods. A software toolchain is introduced, using Model-in-the-Loop (MiL) for the evaluation and calibration of the LKA system. Within, a Design-of-Experiment (DoE) tool is integrated together with the simulation environment. This enables the examination of the two different lateral controller concepts Steer-by-Angle (SbA) and Steer-by-Torque (SbT). Their lateral guidance performance is characterized by Key Performance Indicators (KPI), which are derived from simulation quantities of straight-line and cornering maneuvers. Further, statistical behavior models are generated based on those KPI and controller design variables (DV). The subsequent optimization process leads to high performances of both controllers. In particular, the SbA controller shows higher efficiency under the impact of disturbances as well as the reference reaction with lower settling times. Overall, the achieved lateral guidance performances indicate the potential of both control algorithms in an early development stage. With the software toolchain, a platform for further LKA system calibration and lateral guidance performance optimization is established.
Temperature-dependent rheological properties of viscoelastic polymer based flexible abrasive media for finishing process
Authors: Kumar S Santhosh , Hiremath Somashekhar S
Published: January 2021

The objective of the present investigation is to develop and study the thermal and rheological properties of the in-house developed flexible abrasive media. It is a mixer of viscoelastic polymer and plasticizer mixed with micro-abrasive particles, used for removing debris and irregularities present on internal and external complex surfaces used in the aerospace, automotive and medical industries. This paper presents, morphology of the developed abrasive media is captured using the Scanning Electron Microscope (SEM), thermal properties of the abrasive media are studied using Thermo Gravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) analysis along with tensile properties of the abrasive media ascertained using the universal testing machine. The rheological properties of the media play a major role in media flow over the intricate shapes and removing the material from the surface. To understand the media behavior, further rheological properties such as viscosity, shear stress, storage modulus, loss modulus, loss tangent, and complex viscosity are ascertained with varying shear rate and frequency at different temperature using rheometer. The TGA and DSC results shows abrasive media has good thermal stability and possibility of using the media for finishing process under lower temperature <100 °C. Rheological studies shows the shear thinning behaviour of the media and elastic solid behavior (G′ > G′′) at different temperatures which is suitable for finishing the complex internal and the external features efficiently and effectively. The developed abrasive media is used to finish the hydraulic components which are difficult to access with conventional tools and the results of finishing process are presented.
Prevalence and risk of subclinical carotid atherosclerosis in the global population with HIV: a systematic review and meta-analysis
Authors: Liu Xuan , Sun Yang , Zhan Yongle , Jiang Yu
Published: January 2021

The current evidence regarding the prevalence of subclinical carotid atherosclerosis (SCA) for people living with HIV(PLWH) is inconsistent. In this study, we aimed to synthesize data on the prevalence and association of SCA patients with HIV infection. We searched PubMed, EMBASE, Web of Science, Medline, SinoMed, and CNKI from inception to March 2, 2020. The pooled proportion, odds ratio (OR) with 95% confidence intervals (CIs) were calculated. For inclusion, SCA was measured by carotid intima-media thickness (CIMT), with a B-mode ultrasound machine. Twenty-six studies consisting of 6590 participants were identified. The overall prevalence of SCA was 31.6% (95% CI 13.4‐53.3; I2 = 99%; 4 studies) according to CIMT ≥ 0.78 mm criteria, and 32.3% (19.6‐46.4; 97%; 10 studies) according to CIMT ≥ 0.90 mm criteria. SCA prevalence was higher in Europe, over 40 years old and male. What’s more, PLWH have a higher likelihood of developing SCA comorbidity than HIV-negative controls (pooled OR 2.66, 95% CI 1.57‐4.50, I2 = 74%; 9 studies), even after sensitivity analysis (pooled OR 2.58, 1.54‐4.31, 73%). This study suggests a high prevalence and risk of SCA in the global population with HIV. As a result, subclinical carotid atherosclerosis deserves more attention from policymakers, HIV health-care providers, researchers, and stakeholders.
Delayed diagnosis of lymphogranuloma venereum in a hospital setting – a retrospective observational study
Authors: Bosma Jacob W , van Tienhoven Arne Jon , Thiesbrummel Harold FJ , de Vries Henry , Veenstra Jan
Published: January 2021

Objective: The incidence of lymphogranuloma venereum (LGV) in Europe is increasing. However, diagnosing LGV in a hospital setting is rare. We analysed the diagnostic process and clinical characteristics of patients with LGV in a hospital setting. Design and setting: A retrospective observational study conducted in a teaching hospital in Amsterdam, The Netherlands. All adult patients with LGV between November 2010 and February 2019 were included. Clinical data were retrieved from electronic patient records. Results: 40 patients were included. 90% of patients were men who have sex with men (MSM) and 62,5% were HIV positive. The most common presenting symptoms were rectal bleeding (47,5%), anal symptoms (30%) and change in bowel habits (25%). The mean time from first consultation to diagnosis was 28 days (range: 0 to 332, median 16,5 days). Diagnostic delay was increased by clinical presentation (ie anogenital syndrome) and the number of specialists involved. Diagnostic procedures not leading to the diagnosis were performed in 98% of cases. Conclusion: To prevent late complications, unnecessary diagnostic procedures and further transmission, early testing for LGV should be incorporated in the work-up of every patient reporting MSM-activity presenting with anorectal symptoms or inguinal lymphadenopathy.
Reasoning Through the Disjunctive Syllogism in Monkeys
Authors: Ferrigno Stephen , Huang Yiyun , Cantlon Jessica F.
Published: January 2021

The capacity for logical inference is a critical aspect of human learning, reasoning, and decision-making. One important logical inference is the disjunctive syllogism: given A or B, if not A, then B. Although the explicit formation of this logic requires symbolic thought, previous work has shown that nonhuman animals are capable of reasoning by exclusion, one aspect of the disjunctive syllogism (e.g., not A = avoid empty). However, it is unknown whether nonhuman animals are capable of the deductive aspects of a disjunctive syllogism (the dependent relation between A and B and the inference that “if not A, then B” must be true). Here, we used a food-choice task to test whether monkeys can reason through an entire disjunctive syllogism. Our results show that monkeys do have this capacity. Therefore, the capacity is not unique to humans and does not require language.