bluuebunny/crossref_metadata_2025_split huggingface dataset:
Do patients report quality of life improvements after fitting of their unilateral bone conducting hearing implant?
Authors: Meghji S , Collett A , Nunney I , Prinsley P , Hanif J 
Published: February 2021

AbstractObjectiveThe audiological benefits of a bone conducting hearing implant are well documented; however, there is a paucity of literature comparing pre- and post-operative quality of life benefits. This study assessed the quality of life status before and after the device is implanted.MethodsA prospective study was conducted of all adult bone conducting hearing implants inserted in a teaching hospital between 2012 and 2017. All patients completed the Glasgow Health Status Inventory, a validated quality of life questionnaire, before and three to six months after implantation.ResultsSixty-two patients received a unilateral bone conducting hearing implant. All scores except the social score improved post-operatively. The paired t-test showed that the differences in the means for the Glasgow Health Status Inventory total, general and physical scores were statistically significant at the 5 per cent level (p < 0.0001).ConclusionThis study, one of the few to assess quality of life pre- and post-implantation, showed a vast improvement in patients’ perceived quality of life from the pre- to the post-operative phase.
Presence through absence? Understanding the role of capital in the African Human Rights Action Plan
Authors: Okafor Obiora Chinedu , Ahmed Sanaa , Bawa Sylvia , Odumosu-Ayanu Ibironke 
Published: February 2021

AbstractThis study examines the African Human Rights Action Plan (AHRAP) through the lens of Upendra Baxi's germinal theory on the emergence in our time of a ‘trade-related, market-friendly human rights’ (TREMF) thesis that is challenging the specific understandings of ‘people-centric’ human rights that are predicated in the letter and spirit of the Universal Declaration of Human Rights (UDH). Baxi contends, instead, that the dominant strands of the contemporary understandings of human rights are – for the most part – designed to protect the interests of global capital. That said, human rights frameworks in low-income countries need to be studied with a view to what they say and don't say about global capital. Despite its attempt to facilitate a progressive realisation of human rights in Africa, the AHRAP does not rise far enough above the TREMF paradigm to re-locate itself within the UDH one. This is due to the AHRAP not adequately theorising and analysing the role of capital in the (non)realisation of human rights in Africa. By allowing trade and market practices to slip to a significant extent beyond its purview, the AHRAP privileges – to a significant degree – the needs/interests of capital over the human rights of ordinary Africans. That is, the victims of the excesses of capital in Africa are reincarnated in the AHRAP document by the fact of their exclusion from it.
A Parametric Study of Compliant Link Design for Safe Physical Human–Robot Interaction
Authors: She Yu , Song Siyang , Su Hai-jun , Wang Junmin 
Published: February 2021

SUMMARYRobots of next-generation physically interact with the world rather than be caged in a controlled area, and they need to make contact with the open-ended environment to perform their task. Compliant robot links offer intrinsic mechanical compliance for addressing the safety issue for physical human–robot interactions (pHRI). However, many important research questions are yet to be answered. For instance, how do system parameters, for example, mechanical compliance, motor torque, impact velocities, and so on, affect the impact force? how to formulate system impact dynamics of compliant robots, and how to size their geometric dimensions to maximize impact force reduction. In this paper, we present a parametric study of compliant link (CL) design for safe pHRI. We first present a theoretical model of the pHRI system that is comprised of robot dynamics, an impact contact model, and dummy head dynamics. After experimentally validating the theoretical model, we then systematically study the effects of CL parameters on the impact force in more detail. Specifically, we explore how the design and actuation parameters affect the impact force of pHRI system. Based on the parametric studies of the CL design, we propose a step-by-step process and a list of concrete guidelines for designing CL with safety constraints in pHRI. We further conduct a simulation case study to validate this design process and design guidelines.
Forward Kinematic Modeling of Conical-Shaped Continuum Manipulators
Authors: Bouyom Boutchouang A. H. , Melingui Achille , Mvogo Ahanda J. J. B. , Lakhal Othman , Biya Motto Frederic , Merzouki Rochdi 
Published: February 2021

SUMMARYForward kinematics is essential in robot control. Its resolution remains a challenge for continuum manipulators because of their inherent flexibility. Learning-based approaches allow obtaining accurate models. However, they suffer from the explosion of the learning database that wears down the manipulator during data collection. This paper proposes an approach that combines the model and learning-based approaches. The learning database is derived from analytical equations to prevent the robot from operating for long periods. The database obtained is handled using Deep Neural Networks (DNNs). The Compact Bionic Handling robot serves as an experimental platform. The comparison with existing approaches gives satisfaction.
Studying National Commemoration and Political Celebrations in Africa: The Online Archive African Independence Days
Authors: Gabriel Marie-Christin , Lentz Carola 
Published: February 2021

AbstractThe Department of Anthropology and African Studies (ifeas) at Johannes Gutenberg University Mainz hosts a comprehensive archive on African Independence Day celebrations. Created in 2010, the archive is one of the outcomes of a large comparative research project on African national days directed by Carola Lentz. It offers unique insights into practices of as well as debates on national commemoration and political celebrations in Africa. The archive holds more than 28,000 images, including photographs, newspaper articles, documents, and objects from twelve African countries: Benin, Burkina Faso, Cameroon, Côte d'Ivoire, Democratic Republic of the Congo, Gabon, Ghana, Madagascar, Mali, Namibia, Nigeria, and Tanzania. It primarily consists of an online photo and newspaper archive (https://bildarchiv.uni-mainz.de/AUJ/; https://www.blogs.uni-mainz.de/fb07-ifeas-eng/departmental-archives/online-archive-african-independence-days/); some of the material is also stored in the physical archive on African Independence Days at ifeas as well as in the department's ethnographic collection (https://www.blogs.uni-mainz.de/fb07-ifeas-eng/ethnographic-collection/). Most of the material concerns recent celebrations, but the collection has been complemented by some documentation of earlier festivities. Archives hold many stories while they also have a story to tell in their own right. This article discusses both aspects. It first traces the history of the Online Archive African Independence Days at ifeas. It then provides an overview of the different categories of material stored in the archive and tells a few of the many stories that the photos, texts and objects contain. We hope to demonstrate that the archive holds a wealth of sources that can be mined for studies on national commemoration and political celebrations in Africa, and, more generally, on practices and processes of nation-building and state-making.
A Positive Zonal Wind Feedback on Sudden Stratospheric Warming Development Revealed by CESM2 (WACCM6) Reforecasts
Authors: Davis Nicholas A. , Richter Jadwiga H. , Edwards Jim , Glanville Anne A. 
Published: February 2021

AbstractSudden stratospheric warmings (SSWs) are an extreme weather event with impacts on the ionosphere and on tropospheric weather and predictability. The mechanisms governing their formation remain elusive, despite their deterministic predictability at nearly 2 weeks. This study uses high resolution CESM2 (WACCM6) subseasonal reforecasts to examine the dynamics that differentiate successful and unsuccessful SSW predictions. Successful reforecasts are generally initialized with a weaker stratospheric jet. However, the basic relationships between jet deceleration, wave drag, and the residual mean angular momentum flux do not fundamentally differ between successful and unsuccessful reforecasts. Instead, the projection of the residual circulation onto a weakened jet produces a weaker angular momentum flux, which leads to a more rapid erosion of the jet as the residual circulation cannot effectively balance the sustained wave drag. This information could be used to develop forecasting practices that could probe the likelihood of SSWs at longer timescales.
Reconciling the Size‐Dependence of Marine Particle Sinking Speed
Authors: Cael B. B. , Cavan Emma L. , Britten Gregory L. 
Published: February 2021

AbstractSinking particles are critical to the ocean's “biological pump,” sequestering carbon from the atmosphere. Particles' sinking speeds are a primary factor determining fluxes and subsequent ecological and climatic impacts. While size is a key determinant of particles' sinking speeds, observations suggest a variable size‐sinking relationship, affected by other particle properties, resulting in substantial spread in parameterizations of particle sinking and fluxes. We compile particle size‐sinking observations and apply hierarchical Bayesian statistical models to resolve the size‐sinking relationship while accounting for other factors. We find an overall scaling close to the general Navier‐Stokes drag equation, and differences between particle types, open ocean versus coastal/laboratory particles, and in situ versus ex situ methods. These results can help harmonize how Earth system models parameterize particle fluxes and support a weaker size‐dependence than often assumed, with implications for the flux contribution of small particles and the predicted future shrinking of marine particle populations.
An Explanation for Arecibo Plasma Line Power Striations
Authors: Longley William J. , Vierinen Juha , Sulzer Michael P. , Varney Roger H. , Erickson Philip J. , Perillat Phil 
Published: February 2021

AbstractMeasurements of plasma lines by the Arecibo incoherent scatter radar are known to have sharp striations in power, varying with the plasma frequency and magnetic aspect angle of the radar beam. We explain these power striations as the manifestation of a suprathermal electron population with peaks in energy at approximately 15, 25, and 45 eV. These energies correspond to sharp features in the photoelectron energy spectra measured by rockets and spacecraft. A new theory is developed to predict the plasma line power for an arbitrary, magnetized suprathermal distribution. The magnetization terms in this theory are shown to contribute substantially to the enhancement of plasma line power through inverse Landau and cyclotron damping of the suprathermal peaks. The theory is applied as a forward model to measurements obtained at Arecibo for different magnetic field aspect angles, showing general agreement with the data. At large magnetic aspect angles the theory reproduces the upper‐hybrid instability which can cause 150 km echoes. The developed theory allows for the suprathermal distribution at a given altitude to be probed across a wide range of energies and pitch angles.
One and a Half Million Yearlong Aridity During the Middle Eocene in North‐West China Linked to a Global Cooling Episode
Authors: Zhang Rui , Kravchinsky Vadim A. , Qin Jie , Goguitchaichvili Avto , Li Jianxing 
Published: February 2021

AbstractThe Eocene record of substantial aridification near Tibet was reported to mimic the global climate cooling trend, overwriting the previously proposed dominant role of the Tibetan Plateau uplift in the aridification (Li et al., 2018, https://doi.org/10.1038/s41467‐018‐05415‐x). Here we present new paleoclimate data from the red clay sequence deposited between 40 and 50 Ma in Altun Shan at the northeastern edge of the Tibetan Plateau. After building an age model using a compilation of magnetostratigraphy and cyclostratigraphy, we demonstrate that our record of magnetic susceptibility in the Altun Shan red clay exhibits variations linked to eccentricity cycles. Our age model allows us to estimate the age of eight short geomagnetic events, cryprochrons, in Altun Shan. Further we show that the aridification interval in Altun Shan coincides with (i) a cooling event recorded in the global oxygen isotope record, (ii) a sea surface temperature record on the east Tasmanian plateau, and (iii) an aridity record in the surrounding sedimentary basins of Central Asia. The middle Eocene aridity and cooling reached its maximum 45.5‐44 Ma.
The Kinetics of O2 Singlet Electronic States in the Upper and Middle Atmosphere During Energetic Electron Precipitation
Authors: Kirillov A. S. , Belakhovsky V. B. 
Published: February 2021

AbstractThe electronic kinetics of O2 singlet states a1Δg and b1 in the upper and middle atmosphere of the Earth during energetic electron precipitation is considered. Intramolecular and intermolecular electron energy transfers in inelastic collisions of electronically excited molecular oxygen and molecular nitrogen with O2 and N2 molecules are taken into account in the calculations. The calculations indicate an influence of atmospheric density increase on the calculated volume intensity of 762 nm emission. For the first time, it is shown the dependence of the calculated column intensity ratios of 1.27 μm and 762 nm bands on the energy of auroral and relativistic electrons (40 keV to 10 MeV) and on time of the precipitation. Applying the calculated integral intensities of the bands, we have calculated column intensities of 762 nm and 1.27 μm bands for 12 most intensive events of energetic electron precipitations observed in the polar atmosphere during 2003–2014.
Permafrost Organic Carbon Turnover and Export Into a High‐Arctic Fjord: A Case Study From Svalbard Using Compound‐specific 14C Analysis
Authors: Kusch Stephanie , Rethemeyer Janet , Ransby Daniela , Mollenhauer Gesine 
Published: February 2021

AbstractIn a warming climate, thawing permafrost soils in the circumpolar Arctic region are subject to enhanced microbial turnover as well as mass mobilization and other erosion processes. High‐Arctic settings such as Svalbard are exceptionally vulnerable to these effects, but the presence of coal deposits obscures the organic carbon (OC) signature of permafrost OC, particularly its carbon isotope composition, when studying OC turnover and export. Here, we analyze the compound‐specific δ13C and Δ14C isotopic composition of alkanoic acids from permafrost soils and river and fjord sediments to assess soil turnover in the catchment of the Bayelva River near Ny‐Ålesund and trace transport and re‐burial of permafrost OC into the adjacent Kongsfjord. Our data confirm the influence of coal‐derived OC on δ13C and Δ14C values of bulk soil and sedimentary OC, while alkanoic acid δ13C and Δ14C values are less affected by coal contributions. Alkanoic acid Δ14C values in the soil profile imply long–term residence in soils prior to deposition in river and fjord sediments, that is, multi‐millennial turnover that is significantly slower than reported from other environments. Strongly 14C‐depleted vascular plant‐derived long‐chain alkanoic acids can be found in Bayelva River and Kongsfjord sediments revealing substantial input of deep active layer/permafrost OC, particularly in the Bayelva River and off its river mouth. In the central Kongsfjord, long‐chain alkanoic acid Δ14C values are higher either reflecting input from other permafrost areas or physical effects resulting, for example, from deposition in settings with different accumulation rates or from sediment sorting.
Prevalence, awareness, treatment and control of young-onset hypertension in Malaysia, 2006–2015
Authors: Khoo Yi Yi , Farid Nik Daliana Nik , Choo Wan Yuen , Omar Azahadi 
Published: February 2021

AbstractThe continuous presence of elevated blood pressure (BP) when young is a strong predictor of future cardiovascular risk. This study aimed to elucidate the prevalence, awareness, treatment and control of young-onset hypertension (YOH) in Malaysia during the period 2006–2015. Data on respondents aged 18–39 diagnosed with YOH according to the 7th Joint National Committee Report (USA) were extracted from three National Health and Morbidity Surveys (2006, 2011, and 2015). The prevalence of YOH remained stable: 17.7%, 95% CI [17.0, 18.3] in 2006, 17.0%, 95% CI [16.0, 17.9] in 2011 and 18.4%, 95% CI [17.4, 19.4] in 2015. Awareness, treatment and control rates were suboptimal; 15% were aware of their diagnosis, of which less than 50% were on treatment and less than 40% who were on treatment had their BP controlled. Trend analysis revealed a significant increase in YOH prevalence among urban dwellers; those with no formal and tertiary education and middle-income earners. YOH awareness and treatment rates were lower among respondents <30 years; however, when treated, this group achieved overall better control rates. Females had higher awareness and treatment rates, but lower control. Treatment rates remained stable for all ethnicities with the exception of Chinese, which decreased. This study narrows the knowledge gap on YOH epidemiology in Malaysia by providing crucial information on the pervasiveness of hypertension among young adults. Results can be used to develop non-communicable disease policies and health promotion strategies specially targeted at young adults who are in the prime of life.
Ferroptosis: mechanisms and links with diseases
Authors: Yan Hong-fa , Zou Ting , Tuo Qing-zhang , Xu Shuo , Li Hua , Belaidi Abdel Ali , Lei Peng 
Published: February 2021

AbstractFerroptosis is an iron-dependent cell death, which is different from apoptosis, necrosis, autophagy, and other forms of cell death. The process of ferroptotic cell death is defined by the accumulation of lethal lipid species derived from the peroxidation of lipids, which can be prevented by iron chelators (e.g., deferiprone, deferoxamine) and small lipophilic antioxidants (e.g., ferrostatin, liproxstatin). This review summarizes current knowledge about the regulatory mechanism of ferroptosis and its association with several pathways, including iron, lipid, and cysteine metabolism. We have further discussed the contribution of ferroptosis to the pathogenesis of several diseases such as cancer, ischemia/reperfusion, and various neurodegenerative diseases (e.g., Alzheimer’s disease and Parkinson’s disease), and evaluated the therapeutic applications of ferroptosis inhibitors in clinics.
Statin use is associated with reduced motor recovery after spinal cord injury
Authors: Triplet Erin M. , Scarisbrick Isobel A. 
Published: February 2021

Abstract
Study design
We completed retrospective analysis of statin use in individuals with neurologically significant spinal cord injury in a historical cohort study.

Objective
Our objective was to establish the prevalence of cholesterol-lowering agent use following spinal cord injury (SCI) and to determine the impact on recovery of motor function.

Setting
Patients enrolled in the Rochester Epidemiology Project in Olmsted County, Minnesota, USA from 2005 to 2018 were included in analysis.

Methods
Exclusion criteria: age <18, comorbid neurological disease, prior neurological deficit, nontraumatic injury, survival <1 year, or lack of motor deficit. Demographics and cholesterol-lowering agent use in 83 individuals meeting all criteria were recorded. A total of 68/83 individuals were then assessed for change in function over the first 2 months after injury using the ISNCSCI motor subscore. Statistical comparison between control and statin groups was done by two-sided Chi-squared test or two-tailed Student’s t test. Generalized regression was performed to assess associations between independent variables and functional outcome.

Results
30% of individuals with SCI had a prescription for a cholesterol-lowering agent. No significant differences were observed in severity of injury or demographic composition between groups. The change in motor subscore was reduced in the statin group compared to controls (p = 0.03, Mann–Whitney). Both severity of injury and statin were significant predictors of reduced motor recovery (p = 0.001, and p = 0.04, respectively).

Conclusions
Both severity of SCI and statins were significant predictors of reduced motor recovery. Additional investigation is needed to address potential impact of statin-therapy in the context of CNS injury and repair.
Tan’s two-body contact across the superfluid transition of a planar Bose gas
Authors: Zou Y.-Q. , Bakkali-Hassani B. , Maury C. , Le Cerf É. , Nascimbene S. , Dalibard J. , Beugnon J. 
Published: February 2021

AbstractTan’s contact is a quantity that unifies many different properties of a low-temperature gas with short-range interactions, from its momentum distribution to its spatial two-body correlation function. Here, we use a Ramsey interferometric method to realize experimentally the thermodynamic definition of the two-body contact, i.e., the change of the internal energy in a small modification of the scattering length. Our measurements are performed on a uniform two-dimensional Bose gas of 87Rb atoms across the Berezinskii–Kosterlitz–Thouless superfluid transition. They connect well to the theoretical predictions in the limiting cases of a strongly degenerate fluid and of a normal gas. They also provide the variation of this key quantity in the critical region, where further theoretical efforts are needed to account for our findings.
Two-phase transport in a cemented waste package considering spatio-temporal evolution of chemical conditions
Authors: Huang Yonghui , Shao Haibing , Wieland Erich , Kolditz Olaf , Kosakowski Georg 
Published: February 2021

AbstractThe long-term evolution of cemented waste packages is governed by (bio)chemical reactions between waste, cement, and barrier materials, and by transport processes inside the waste package and through openings in the waste package hull. Inside a waste package, gases can be generated by pH-dependent anoxic corrosion of metals and the degradation of organic matter. The (bio)chemical reactions consume water and will not proceed under dry conditions. The degradation of cementitious materials lowers the alkaline pH of the pore water. The modeling of such a complex feedback system shows that the internal structure of a waste package and the exchange of mass with the environment (boundary conditions) are major factors that determine the importance of process couplings. The (bio)chemical reactions are controlled by internal re-distribution of water predominantly via vapor transport. Calculated gas generation rates were found to be affected by dry-out processes inside the drum.