bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of nitrate supplementation on skeletal muscle motor unit activity during isometric blood flow restriction exercise
Authors: Esen Ozcan , Faisal Azmy , Zambolin Fabio , Bailey Stephen J. , Callaghan Michael J. 
Published: April 2022

Abstract
Background
Nitrate (NO3−) supplementation has been reported to lower motor unit (MU) firing rate (MUFR) during dynamic resistance exercise; however, its impact on MU activity during isometric and ischemic exercise is unknown.

Purpose
To assess the effect of NO3− supplementation on knee extensor MU activities during brief isometric contractions and a 3 min sustained contraction with blood flow restriction (BFR).

Methods
Sixteen healthy active young adults (six females) completed two trials in a randomized, double-blind, crossover design. Trials were preceded by 5 days of either NO3− (NIT) or placebo (PLA) supplementation. Intramuscular electromyography was used to determine the M. vastus lateralis MU potential (MUP) size, MUFR and near fibre (NF) jiggle (a measure of neuromuscular stability) during brief (20 s) isometric contractions at 25% maximal strength and throughout a 3 min sustained BFR isometric contraction.

Results
Plasma nitrite (NO2−) concentration was elevated after NIT compared to PLA (475 ± 93 vs. 198 ± 46 nmol L−1, p < 0.001). While changes in MUP area, NF jiggle and MUFR were similar between NIT and PLA trials (all p > 0.05), MUP duration was shorter with NIT compared to PLA during brief isometric contractions and the sustained ischemic contraction (p < 0.01). In addition, mean MUP duration, MUP area and NF jiggle increased, and MUFR decreased over the 3 min sustained BFR isometric contraction for both conditions (all p < 0.05).

Conclusions
These findings provide insight into the effect of NO3− supplementation on MUP properties and reveal faster MUP duration after short-term NO3− supplementation which may have positive implications for skeletal muscle contractile performance.
Spontaneous Swallowing Frequency in Post-Stroke Patients with and Without Oropharyngeal Dysphagia: An Observational Study
Authors: Alvarez-Larruy Marta , Tomsen Noemí , Guanyabens Nicolau , Palomeras Ernest , Clavé Pere , Nascimento Weslania 
Published: April 2022

AbstractOropharyngeal dysphagia (OD) is a frequent complication after stroke (PSOD) that increases morbidity and mortality. Early detection of PSOD is essential to reduce morbidity and mortality in patients with acute stroke. In recent years, an association between reduced spontaneous swallowing frequency (SSF) and OD has been described. Likewise, the reduction of saliva substance P (SP) concentration has been associated with an increased risk of aspiration and a decrease in SSF. In this study we aimed to compare SSF, salivary SP concentration, hydration and nutritional status in post-stroke (PS) patients with and without OD. We included 45 acute PS patients (4.98 ± 2.80 days from stroke onset, 62.22% men, 71.78 ± 13.46 year). The Volume-Viscosity Swallowing Test (V-VST) was performed for clinical diagnosis of OD. SSF/minute was assessed through 10-min neurophysiological surface recordings including suprahyoid-electromyography and cricothyroid-accelerometry. Saliva samples were collected with a Salivette® to determine SP by ELISA. Hydration status was assessed by bioimpedance. Nutritional status was evaluated by Mini Nutritional Assessment Short Form (MNA-sf) and blood analysis. Twenty-seven PS patients (60%) had OD; 19 (40%), impaired safety of swallow. SSF was significantly reduced in PSOD, 0.23 ± 0.18 and PSOD with impaired safety, 0.22 ± 0.18 vs 0.48 ± 0.29 swallows/minute in PS without OD (PSnOD); (both p < 0.005). Nutritional risk was observed in 62.92% PSOD vs 11.11% PSnOD (p = 0.007) and visceral protein markers were also significantly reduced in PSOD (p < 0.05). Bioimpedance showed intracellular dehydration in 37.50% PSOD vs none in PSnOD. There were no differences for saliva SP concentrations. SSF is significantly reduced in PSOD in comparison with PSnOD. Acute PSOD patients present poor nutritional status, hydropenia, and high risk for respiratory complications.
From the tyrosine hydroxylase hypothesis of Parkinson’s disease to modern strategies: a short historical overview
Authors: Rausch Wolf-Dieter , Wang Feixue , Radad Khaled 
Published: April 2022

AbstractA time span of 60 years covers the detection of catecholamines in the brain, their function in movement and correlation to Parkinson’s disease (PD). The clinical findings that orally given l-DOPA can alleviate or even prevent akinesia gave great hope for the treatment of PD. Attention focused on the role of tyrosine hydroxylase (TH) as the rate-limiting enzyme in the formation of catecholamines. It became evident that the enzyme driven formation is lowered in PD. Such results could only be obtained from studying human brain samples demonstrating the necessity for human brain banks. Originally, a TH enzyme deficiency was suspected in PD. Studies were conducted on the enzyme properties: its induction and turnover, the complex regulation starting with cofactor requirements as tetrahydrobiopterin and ferrous iron, and the necessity for phosphorylation for activity as well as inhibition by toxins or regulatory feedback inhibition by catecholamines. In the course of time, it became evident that neurodegeneration and cell death of dopaminergic neurons is the actual pathological process and the decrease of TH a cophenomenon. Nevertheless, TH immunochemistry has ever since been a valuable tool to study neuronal pathways, neurodegeneration in various animal models of neurotoxicity and cell cultures, which have been used as well to test potential neuroprotective strategies.
The effect of water temperature on orthostatic tolerance: a randomised crossover trial
Authors: Parsons Iain T. , Hockin Brooke C. D. , Taha Omnia M. , Heeney Natalie D. , Williams Erin L. , Lucci Vera-Ellen M. , Lee Rebekah H. Y. , Stacey Michael J. , Gall Nick , Chowienczyk Phil , Woods David R. , Claydon Victoria E. 
Published: April 2022

Abstract
Purpose
Bolus water drinking, at room temperature, has been shown to improve orthostatic tolerance (OT), probably via sympathetic activation; however, it is not clear whether the temperature of the water bolus modifies the effect on OT or the cardiovascular responses to orthostatic stress. The aim of this study was to assess whether differing water temperature of the water bolus would alter time to presyncope and/or cardiovascular parameters during incremental orthostatic stress.

Methods
Fourteen participants underwent three head-up tilt (HUT) tests with graded lower body negative pressure (LBNP) continued until presyncope. Fifteen minutes prior to each HUT, participants drank a 500 mL bolus of water which was randomised, in single-blind crossover fashion, to either room temperature water (20 °C) (ROOM), ice-cold water (0–3 °C) (COLD) or warm water (45 °C) (WARM). Cardiovascular parameters were monitored continuously.

Results
There was no significant difference in OT in the COLD (33 ± 3 min; p = 0.3321) and WARM (32 ± 3 min; p = 0.6764) conditions in comparison to the ROOM condition (31 ± 3 min). During the HUT tests, heart rate and cardiac output were significantly reduced (p < 0.0073), with significantly increased systolic blood pressure, stroke volume, cerebral blood flow velocity and total peripheral resistance (p < 0.0054), in the COLD compared to ROOM conditions.

Conclusions
In healthy controls, bolus cold water drinking results in favourable orthostatic cardiovascular responses during HUT/LBNP without significantly altering OT. Using a cold water bolus may result in additional benefits in patients with orthostatic intolerance above those conferred by bolus water at room temperature (by ameliorating orthostatic tachycardia and enhancing vascular resistance responses). Further research in patients with orthostatic intolerance is warranted.
Integration and convergence in efficiency and technology gap of European life insurance markets
Authors: Cummins J. David , Rubio-Misas María 
Published: April 2022

AbstractThis paper applies the meta-frontier Data Envelopment Analysis and the main concepts of convergence from the economic growth literature (β-convergence and σ-convergence) to analyze integration and convergence both in efficiency and in technology gap of European Union (EU) insurance markets. We evaluate 10 EU life insurance markets over the 17-year-period 1998–2014. Results show convergence in cost/revenue efficiency among major EU life insurance markets during the sample period. These findings indicate that the least efficient countries in 1998 have shown a higher improvement in cost/revenue efficiency than the most efficient countries in the same year as well as that the dispersion of the mean efficiency scores among EU life insurance markets decreased over the sample period. We also find convergence in cost/revenue technology gap among these markets, suggesting that they become more technologically homogeneous during the sample period. However, results show that the global financial crisis has led to a slowdown in the progress of integration and convergence in efficiency and technology gap of EU life insurance markets in terms of cost efficiency but not in terms of revenue efficiency.
A Methodology for Providing Surface-Cover-Corrected Net Radiation at Heterogeneous Eddy-Covariance Sites
Authors: Ramtvedt Eirik Næsset , Pirk Norbert 
Published: April 2022

AbstractA one-point measurement of net radiation is typically not representative of radiative energy available for the turbulent exchange of latent and sensible heat at eddy-covariance sites with heterogeneous surface cover. We propose a methodology for providing surface-cover-corrected net radiation matching the footprint of turbulent fluxes at a heterogenous eddy-covariance site. This is demonstrated at a complex sub-alpine site in southern central Norway over a week. The methodology is assessed by comparing the energy balance closure calculated with the regular one-point net radiation measurement at the flux tower against the surface-cover-corrected net radiation. The assessment indicates a decrease in the energy imbalance by 8% when assessed with the energy balance ratio, but no improvement is revealed when assessed with regression methods. However, only a small dataset serves as basis for this demonstration, and the findings therefore cannot necessarily be generalized. Further testing and application of the methodology is required to understand the full effect of surface-cover-correcting mismatching footprints of turbulent fluxes and net radiation at heterogeneous eddy-covariance sites.
Constructing a ‘Different’ Strength: A Feminist Exploration of Vulnerability, Ethical Agency and Care
Authors: Johansson Janet , Wickström Alice 
Published: April 2022

AbstractThis article explores how ethical agency, as ‘other-oriented’ caring, emerged from feelings of being ‘different’ in a cultural organization by drawing on feminist ethics of care. By analyzing interview material from an ethnographic study, we centralize the relationship between feelings of being ‘different,’ vulnerability and the development of sensibilities, practices and imaginaries of care. We elaborate on how vulnerability serves as a ground for caring with rather than for others, and illustrate how it allowed individuals to challenge both organizational, normative diversity discourses and essentialization of differences. We contribute to the literature on critical diversity management by furthering problematizations of instrumental diversity management from the perspective of care, and to the organizational literature on feminist care ethics by empirically exploring how ethical agency emerges from tensions related to feeling ‘different.’ While previous studies have shown how marginalized individuals use their sense of ‘otherness’ to negotiate, conform to and resist organizational norms, practices and discourses, we provide further insights on how it also can drive concern and care for others, and thus serve as possible ground for ethical change initiatives within organizations.
Full ultraviolet shielding potency of highly durable cotton via self- implantation of palladium nanoclusters
Authors: Emam Hossam E. , Zaghloul Saad , Ahmed Hanan B. 
Published: April 2022

AbstractUnique technique is currently demonstrated for preparation of ultraviolet protective cotton fabrics with full shielding effect, via self-implantation of palladium (Pd) nanoclusters. Palladium nanoclusters were in-situ immobilized within native and cationized cotton using two different concentrations of palladium precursor (20 and 60 mM) under strong acidic (pH 2) and basic (pH 11.5) media. Cationization (50 and 100%) of cotton fabrics was performed in order to increase the accessibility of fabric for controllable implantation of palladium nanoclusters. Size distribution of palladium nanoclusters in supernatant solution was estimated via Transmission electron microscopy to be 3.2 nm. The estimated data showed that the sample prepared with the highest cationization percent and highest concentration of palladium precursor in strong alkaline medium exhibited the highest yellowness index, color strength and excellent ultraviolet shielding effects. The yellowness index was significantly increased from 15.67 for cationized cotton to 74.99 for the sample prepared with the highest cationization percent and highest concentration of Pd+2in alkaline medium (Pd-CC (100)4). Tensile strength was insignificantly decreased from 93.2 MPa for cationized cotton to 84.5 MPa for Pd-CC (100)4. Ultraviolet shielding effect was superiorly enhanced with implantation of palladium nanoclusters. The UV protection factor (UPF) was excellency increased from 1.3 (insufficient) for native cotton to 256.6 (excellent) for Pd-CC (100)4. The effect of repetitive washing cycles on the colorimetric data and the results of ultraviolet protection was also studied to affirm the effect of fabric cationization in preparation of highly durable UV-protective fabrics.Graphical abstract
Concise integer linear programming formulation for clique partitioning problems
Authors: Koshimura Miyuki , Watanabe Emi , Sakurai Yuko , Yokoo Makoto 
Published: April 2022

AbstractA Clique Partitioning Problem (CPP) finds an optimal partition of a given edge-weighted undirected graph, such that the sum of the weights is maximized. This general graph problem has a wide range of real-world applications, including correlation clustering, group technology, community detection, and coalition structure generation. Although a CPP is NP-hard, due to the recent advance of Integer Linear Programming (ILP) solvers, we can solve reasonably large problem instances by formulating a CPP as an ILP instance. The first ILP formulation was introduced by Grötschel and Wakabayashi (Mathematical Programming, 45(1-3), 59–96, 1989). Recently, Miyauchi et al. (2018) proposed a more concise ILP formulation that can significantly reduce transitivity constraints as compared to previously introduced models. In this paper, we introduce a series of concise ILP formulations that can reduce even more transitivity constraints. We theoretically evaluate the amount of reduction based on a simple model in which edge signs (positive/negative) are chosen independently. We show that the reduction can be up to 50% (dependent of the ratio of negative edges) and experimentally evaluate the amount of reduction and the performance of our proposed formulation using a variety of graph data sets. Experimental evaluations show that the reduction can exceed 50% (where edge signs can be correlated), and our formulation outperforms the existing state-of-the-art formulations both in terms of memory usage and computational time for most problem instances.
Living Death at the Intersection of Necropower and Disciplinary Power: A Qualitative Exploration of Racialised and Detained Groups in Australia
Authors: O’Donnell Samantha 
Published: April 2022

AbstractThis article challenges state-sponsored violence in Australia by exploring the experiences of young Indigenous people in youth detention and refugees in immigration detention in Australia as a form of living death. This article examines how this living death manifests by qualitatively analysing publicly accessible first-hand accounts from Indigenous young people about their experiences of youth imprisonment and from refugees about their experiences of immigration detention onshore and offshore. The findings suggest that when necropower and disciplinary power intersect four overlapping expressions of violence emerge: structural violence, epistemic violence, physical violence and brutality, and disciplinary violence. It is the complex overlapping of these multiple forms of harm that creates an experience of living death. In privileging the voices of young Indigenous people and refugees, this article also recognises their continued refusal of past and present colonial structures and the associated violence of carceral spaces.
Power(ful) Connections: Exploring the Revolving Doors Phenomenon as a Form of State-Corporate Crime
Authors: Pons-Hernández Mònica 
Published: April 2022

AbstractThe ‘revolving doors’ phenomenon is the name given to the movement of individuals from public office to private companies and vice versa. It is believed that this phenomenon impacts the decision-making process to the detriment of the public interest. While it has largely been framed as a corrupt practice, this research seeks to explore it as a form of state-corporate crime by employing the case study of the Spanish government and the fossil fuel industry. The study finds that the explored case of revolving doors causes harm by driving social and economic instability and climate inaction and proposes the creation of a 'state-capture corporate crime'. Overall, the paper highlights the need to broaden the revolving doors and state-corporate crime concepts to allow its inclusion in the criminological agenda.
Ranking with submodular functions on a budget
Authors: Zhang Guangyi , Tatti Nikolaj , Gionis Aristides 
Published: April 2022

AbstractSubmodular maximization has been the backbone of many important machine-learning problems, and has applications to viral marketing, diversification, sensor placement, and more. However, the study of maximizing submodular functions has mainly been restricted in the context of selecting a set of items. On the other hand, many real-world applications require a solution that is a ranking over a set of items. The problem of ranking in the context of submodular function maximization has been considered before, but to a much lesser extent than item-selection formulations. In this paper, we explore a novel formulation for ranking items with submodular valuations and budget constraints. We refer to this problem asmax-submodular ranking($$\text {MSR}$$MSR). In more detail, given a set of items and a set of non-decreasing submodular functions, where each function is associated with a budget, we aim to find a ranking of the set of items that maximizes the sum of values achieved by all functions under the budget constraints. For the$$\text {MSR}$$MSRproblem with cardinality- and knapsack-type budget constraints we propose practical algorithms with approximation guarantees. In addition, we perform an empirical evaluation, which demonstrates the superior performance of the proposed algorithms against strong baselines.
Global and local sustainable certification systems: Factors influencing RSPO and Thai-GAP adoption by oil palm smallholder farmers in Thailand
Authors: Nupueng Somjai , Oosterveer Peter , Mol Arthur P. J. 
Published: April 2022

AbstractThis paper investigates the factors that influence the adoption of RSPO and Thai-GAP certification by oil palm smallholder farmers in Thailand. A random sample of 77 RSPO certified, 108 non-certified RSPO, 87 Thai-GAP certified, and 67 non-certified Thai-GAP smallholder farmers were interviewed to investigate the factors explaining the RSPO and Thai-GAP scheme adoption, respectively. The logit model was used to analyse the relationships between the adoption and the decision-making factors of the farmers. The results show that membership of farmer groups, the goal of the scheme, and trust in the scheme are the most significant factors affecting the adoption of RSPO certification. Scheme payments have a negative influence on adoption. In case of Thai-GAP, the results show the scheme payment, the image, concerns about the quality of land and water, and trust in the scheme are the most significant factors affecting the adoption. Finally, these findings suggest new factors may be attributed to several issues, including trust in the scheme, membership of farmer groups, the scheme’s goal, and trust in the scheme are the most significant. Designing and extension in influencing factors may play multiple roles in driving smallholder farmers to adopt sustainable certification schemes. This finding repeats that the usability of sustainable certification schemes in developing countries needs to be mobilised around a particular socio-cultural context. Including, understanding the factors affecting smallholder farmers’ intention to adopt Thai-GAP or RSPO certification is very important to plan and promote these schemes among other farmers and transform the current cultivation practices into more sustainable palm oil production.
Schrödinger’s Equation as a Consequence of the Central Limit Theorem Without Assuming Prior Physical Laws
Authors: Grinwald P. M. 
Published: April 2022

AbstractThe central limit theorem has been found to apply to random vectors in complex Hilbert space. This amounts to sufficient reason to study the complex–valued Gaussian, looking for relevance to quantum mechanics. Here we show that the Gaussian, with all terms fully complex, acting as a propagator, leads to Schrödinger’s non-relativistic equation including scalar and vector potentials, assuming only that the norm is conserved. No physical laws need to be postulated a priori. It thereby presents as a process of irregular motion analogous to the real random walk but executed under the rules of the complex number system. There is a standard view that Schrödinger’s equation is deterministic, whereas wavefunction “collapse” is probabilistic (by Born’s rule)—we have now a demonstrated linkage to the central limit theorem, indicating a stochastic picture at the foundation of Schrödinger’s equation itself. It may be an example of Wheeler’s “It from bit” with “No underlying law”. Reasons for the primary role of $$\mathbf {C}$$
C
are open to discussion. The present derivation is compared with recent reconstructions of the quantum formalism, which have the aim of rationalizing its obscurities.
Erasmus students’ motivations in motion: understanding super-mobility in higher education
Authors: Cuzzocrea Valentina , Krzaklewska Ewa 
Published: April 2022

Abstract
This paper looks at youth mobility as an ongoing, dynamic, processual experience in the making of an educational trajectory. By exploring the experiences of students who have undertaken more than one mobility experience under the Erasmus + program, we reflect on how underlying motivations change over the course of subsequent mobility experiences. In contrast to existing research, where the focus has been on reported motivations for one-off mobility experience, we discuss the latent motivations driving super-mobile educational trajectories. In doing so, we observe the ongoing reconfiguration of these trajectories through the concept of spatial reflexivity, which results in articulated and augmentative dynamics over time. Methodologically, the paper is based on qualitative material collected in person and online with such mobile young people across Europe.