bluuebunny/crossref_metadata_2025_split huggingface dataset:
COVID-19 vaccine: A 2021 analysis of perceptions on vaccine safety and promise in a U.S. sample
Authors: Osuji Vitalis C. , Galante Eric M. , Mischoulon David , Slaven James E. , Maupome Gerardo 
Published: May 2022

Background
Despite reliable evidence-based research supporting the COVID-19 vaccines, population-wide confidence and trust remain limited. We sought to expand prior knowledge about COVID-19 vaccine perceptions, while determining which population groups are at greatest risk for not getting a vaccine.

Methods
Study participants in the U.S. (79% female, median age group 46–60 years) were recruited through an online Qualtrics survey distributed as a Facebook advertisement from 3/19/21–4/30/21. We assumed that every participant is at risk of COVID-19 infection and should be able to get the vaccine with proper access. Bivariate and multivariable models were performed. Collinearity between variables was assessed.

Results
A total of 2,626 responses were generated and 2,259 were included in data analysis. According to our multivariate model analysis, vaccines were perceived as safe by those who had or planned to obtain full vaccination (adjusted odds ratio (aOR) (95% confidence interval) = 40.0 (19.0, 84.2); p< 0.0001) and those who indicated trust in science (aOR = 10.5 (5.1, 21.8); p< 0.0001); vaccines were perceived as not safe by those who self-identified as Republicans vs. self-identified Democrats (aOR = 0.2 (0.1, 0.5); p = 0.0020) and those with high school or lower education (aOR = 0.2 (0.1, 0.4); p = 0.0007). Similarly, according to our multivariate model analysis, the following groups were most likely to reject vaccination based on belief in vaccinations: those with lower income (aOR = 0.8 (0.6, 0.9); p = 0.0106), those who do not know anyone who had been vaccinated (aOR = 0.1 (0.1, 0.4); p< 0.0001), those who are unwilling to get vaccinated even if family and friends had done so (aOR = 0.1 (<0.1, 0.2); p< 0.0001), those who did not trust science (aOR < 0.1 (<0.1, 0.1); p< 0.0001), those who believe that vaccination was unnecessary if others had already been vaccinated (aOR = 2.8 (1.5, 5.1); p = 0.0007), and those who indicate refusal to vaccinate to help others (aOR = 0.1 (0.1, 0.2); p< 0.0001). An alpha of p<0.05 was used for all tests.

Conclusion
Level of education and partisanship, but not race/ethnicity, were the most likely factors associated with vaccine hesitancy or likelihood to vaccinate. Also, low vaccination rates among underrepresented minorities may be due to distrust for healthcare industries. Population sub-groups less likely to be vaccinated and/or receptive to vaccines should be targeted for vaccine education and incentives.
Microwave-assisted preparation of Ag/Fe magnetic biochar from clivia leaves for adsorbing daptomycin antibiotics
Authors: Zhang Lei , Ai Tian , Tian Xiaoxi , Xu Chunmei , Wu Yonggui , Yu Zhongxu , Dai Shujuan 
Published: May 2022

Abstract
Novel clivia biochar adsorbing daptomycin (DAP) was prepared by microwave digestion–anaerobic carbonization in this work. Fe/Ag submicron particles were introduced to the biochar surface based on the reducibility of biochar to enhance its adsorption capacity. Characterization confirmed that modified biochar (AF-biochar) had a higher particle size (126 μm), larger specific surface area (521.692 m2 g−1), richer pore structure, and higher thermal stability. The effects of the main variables (e.g., the solution pH, contact time, initial DAP concentration, and temperature) were investigated during adsorption. The results showed that AF-biochar could reach the adsorption equilibrium at pH 4.8 for 85 min. Besides, the adsorption capacity was 48.25 mg g−1, and the adsorption efficiency was 96.50% when the concentration of DAP was 25 mg L−1. The pseudo-second-order kinetics (R
2 = 0.9997), Langmuir equation (R
2 = 0.9999), and thermodynamics (R
2 = 0.9631) of AF-biochar fit well, indicating that the main adsorption process of AF-biochar was spontaneous, exothermic, and monolayer. Their adsorption was analyzed by physical and chemical adsorption. The main adsorption mechanisms included the electron donor–acceptor interaction, electrostatic force interaction, Lewis acid–base interaction, and H-bond interaction.
Discontinuous Galerkin Methods with Time-Operators in Their Numerical Traces for Time-Dependent Electromagnetics
Authors: Cockburn Bernardo , Du Shukai , Sánchez Manuel A. 
Published: May 2022

Abstract
We present a new class of discontinuous Galerkin methods for the space discretization of the time-dependent Maxwell equations whose main feature is the use of time derivatives and/or time integrals in the stabilization part of their numerical traces.
These numerical traces are chosen in such a way that the resulting semidiscrete schemes exactly conserve a discrete version of the energy.
We introduce four model ways of achieving this and show that, when using the mid-point rule to march in time, the fully discrete schemes also conserve the discrete energy.
Moreover, we propose a new three-step technique to devise fully discrete schemes of arbitrary order of accuracy which conserve the energy in time.
The first step consists in transforming the semidiscrete scheme into a Hamiltonian dynamical system.
The second step consists in applying a symplectic time-marching method to this dynamical system in order to guarantee that the resulting fully discrete method conserves the discrete energy in time.
The third and last step consists in reversing the above-mentioned transformation to rewrite the fully discrete scheme in terms of the original variables.
Developing a plastic cycle toward circular economy practice
Authors: Nguyen Tuyet T. A. , Ta Yen T. , Dey Prasanta K. 
Published: May 2022

Abstract
This study develops a plastic cycle toward circular economy practice in Vietnam. First, we analyze inter-relationships between economic sectors and environmental issues concerning plastic waste in 2018. The research method integrates interdisciplinary balance with life cycle inventory, in which input–output (IO) table is both an econometric tool and original database to determine plastic IO between industries. As a result, over 60% of plastics after use was recycled for the production process (called recycled plastics) and nearly 40% of plastics after-use left the process (called disposed plastics). Within the recycled plastics, there was 10–15% of informal recycling collection from trade villages; within the disposed plastics, there was 13–18% unable to be collected and uncontrollably disposed to the environment. Then, we construct the plastic cycle, in which all the imported/domestic flows, single/multiple uses, and recycle/disposal flows are represented in proportional dimensions. This overall yet quantitative picture is an important data-driven basis for proposing plastic waste management solutions toward circular economy practice. As analyzed, the most challenge for waste management in Vietnam is to control single-use products (occupied 15.96% of total plastics) and indiscriminate waste in the environment (occupied 20.36% of total plastics). The case study for polyethylene terephthalate shows the need for expanding producer’s responsibilities to improve plastic recovery efficiency.
Inter-annual oscillations of terrestrial water storage in Qinghai-Tibetan plateau from GRACE data
Authors: Zhu Chuandong , Zhan Wei 
Published: May 2022

Abstract
Based on multidimensional equivalent water height (EWH) time series in the Qinghai-Tibetan Plateau recovered from GRACE data, rotated multi-channel singular spectrum analysis (RMSSA) was employed to separate and reconstruct its more accurate local mode of inter-annual oscillations of terrestrial water storage (TWS). The results show that RMSSA could effectively suppress the mode mixture of MSSA, and improve the physical interpretation of the inter-annual oscillations of TWS. Three significant inter-annual oscillations with periods of 6.1a, 3.4a, and 2.5a have been found in the multidimensional EWH series in the Qinghai-Tibetan Plateau (QTP), which account for 38.5 %, 23.5 %, and 16.7 % of the total variance, respectively (after the seasonal and long term have been deducted). The spatial patterns and propagation paths of these three inter-annual oscillations are different and exhibit their own independent local characteristics. Based on the analysis of multi-source GRACE GSM data, the results show that the data solution errors have little influence on the extraction of inter-annual oscillations of TWS. The significant 6.4a, 3.5a, and 2.5a inter-annual oscillations are also found in CPC hydrologic model in the QTP using RMSSA, which account for 22.9, 29.9, and 19.3 % of the total variance, respectively. Three inter-annual oscillations separated from GRACE and CPC show similar spatial patterns and significant cross-correlations, respectively. The maximum cross-correlation coefficients are above 0.5 at the 95 % confidence level over 42, 71, and 75 % of the grids in the QTP, respectively. The results indicate that the soil moisture and terrestrial water storage from GRACE have common inter-annual oscillations and corresponding driving factors in the QTP. We conclude that these three inter-annual oscillations of TWS can be explained by the influence of the Arctic oscillation, oceanic Niña, and Indian Ocean dipole.
Effect of combined paracetamol and dexamethasone vs. paracetamol on postoperative nausea vomiting after cesarean section
Authors: Bozorgmanesh Mohammadreza , Valibeik Shamim , Shokrpour Maryam , Maktabi Maryam , Kamali Alireza 
Published: May 2022

Abstract

Objectives
Postoperative nausea and vomiting (PONV) are common symptoms after cesarean delivery (CD) that affect patients outcomes and satisfaction. The treatment of choice is still evolving, therefore, we aimed to evaluate PONV of combined paracetamol-dexamethasone vs. paracetamol alone.

Methods
This study is a double-blind randomized controlled trial on 100 patients undergoing cesarean delivery. Participants were randomly assigned into two groups of paracetamol or combined paracetamol-dexamethasone. Nausea and vomiting score, VAS score of pain, and chill were compared between the two groups.

Results
The result of this study found that mild nausea 2nd h after surgery in the combined group was lesser than paracetamol group (0.03). However, there was no statistically significant difference in nausea and vomiting score in other periods of time between the two groups. VAS score of pain decreased 12th and 6th h after the surgery in the combined and paracetamol group, respectively. Chilling occurred in two patients of combined group and four patients of paracetamol group (p=0.432).

Conclusions
Dexamethasone added to paracetamol might not improve pain and vomiting after cesarean delivery comparison with just paracetamol. But it can be effective for reducing the score of nausea after the surgery.
Epoxy resin/graphene nanoplatelets composites applied to galvanized steel with outstanding microwave absorber performance
Authors: Carvalho de Oliveira Henrique , Lavoratti Alessandra , Miranda Pereira Iaci , Indrusiak Silva Tamara , Soares Bluma Guenther , Rossa Beltrami Lilian Vanessa , José Zattera Ademir 
Published: May 2022

Abstract
The necessity of new electromagnetic interference shielding materials has expanded scientific research, especially with regard to microwave frequency range (X-band). In this context, polymer-based composites with nanoparticles – such as graphene – are promising electromagnetic interference shielding materials. In this work, epoxy resin/graphene nanoplatelets (NPG) composites with 0.10, 0.25 and 0.5% w/w were developed and applied to galvanized steel substrates. Dynamic-mechanical tests showed that the addition of NGPs increased the resin rigidity due to molecular restrictions of the organic chains imposed by the NPG. With the increase of the NPG concentration to 0.50%, the impact strength and the adhesion of the composites significantly decreased due to the formation and propagation of large cracks, followed by delamination. The epoxy resin sample containing 0.25% NPG presented the best microwave absorber performance with an increase of 48% in the attenuated energy and 80% in the reflection loss, respectively. Moreover, this sample extended the microwave absorption range to 10 GHz.
Optimization of Ultra-Small Nanoparticles for Enhanced Drug Delivery
Authors: He Shishi , Fu Yanni , Tan Zicong , Jiang Qun , Huang Kangling , Saw Phei Er , Nie Yan , Guo Mingyan 
Published: May 2022

Abstract
Nanoparticle delivery of drugs to the brain is hindered by the blood-brain barrier (BBB). In malignant glioma (MG), small disruptions in the BBB may allow nanoparticles smaller than 20 nm to penetrate the dysfunctional barrier. We previously developed ultra-small nanoparticles called hyper-cell permeable micelles (HCPMis) with a radius of ∼12 nm and found that a PEGylated HCPMi system showed enhanced cell permeability and cellular uptake, and remarkable anti-tumor properties in MG treatment. However, no study had examined the delivery of temozolomide (TMZ), the first-line drug for MG, with the HCPMi platform. Herein, we use a simple PEGylation increment system (30 wt % PEG, 40 wt % PEG and 50 wt % PEG) to develop a robust optimized HCPMi nanoplatform for TMZ delivery. All optimized HCPMi systems showed greater stability than the non-PEGylated parent formulation. Compared with commercially available micelles (DSPE-PEG2000), all optimized HCPMi systems showed greater cellular uptake in vitro. Although a higher percentage of PEGylation was associated with better cellular uptake and anti-cancer properties, the difference was statistically insignificant. Furthermore, in vitro cytotoxicity assays revealed that all optimized HCPMi-encapsulated TMZ formulations showed significantly stronger anti-cancer properties than the parent drug TMZ and TMZ encapsulated DSPE-PEG2000, thus indicating the feasibility of using this nanoplatform for the delivery of TMZ to treat brain malignancies.
Birth of mice from meiotically arrested spermatocytes following biparental meiosis in halved oocytes
Authors: Ogonuki Narumi , Kyogoku Hirohisa , Hino Toshiaki , Osawa Yuki , Fujiwara Yasuhiro , Inoue Kimiko , Kunieda Tetsuo , Mizuno Seiya , Tateno Hiroyuki , Sugiyama Fumihiro , Kitajima Tomoya S , Ogura Atsuo 
Published: May 2022

AbstractMicroinjection of spermatozoa or spermatids into oocytes is a major choice for infertility treatment. However, the use of premeiotic spermatocytes has never been considered because of its technical problems. Here, we show that the efficiency of spermatocyte injection in mice can be improved greatly by reducing the size of the recipient oocytes. Live imaging showed that the underlying mechanism involves reduced premature separation of the spermatocyte’s meiotic chromosomes, which produced much greater (19% vs. 1%) birth rates in smaller oocytes. Application of this technique to spermatocyte arrest caused by STX2 deficiency, an azoospermia factor also found in humans, resulted in the production of live offspring. Thus, the microinjection of primary spermatocytes into oocytes may be a potential treatment for overcoming a form of nonobstructive azoospermia caused by meiotic failure.
Diatomic Molecules with the Improved Deformed Generalized Deng–Fan Potential Plus Deformed Eckart Potential Model through the Solutions of the Modified Klein–Gordon and Schrödinger Equations within NCQM Symmetries
Authors: Maireche A. 
Published: May 2022

In this study, the deformed Klein–Gordon equation and Schr¨odinger equations were solved with the improved deformed generalized Deng–Fan potential plus the deformed Eckart potential (IDGDFDE-P, in short) model using Bopp’s shift and standard perturbation theory methods in the symmetries of extended quantum mechanics. By employing the improved approximation to the centrifugal term, the relativistic and nonrelativistic bound-state energies are obtained for some selected diatomic molecules such as N2, I2, HCl, CH, LiH, and CO. The relativistic energy shift ΔEtotdfe (n, a, c, b, V0, V1, V2, Θ, σ, χ, j, l, s, m) and the perturbative nonrelativistic corrections ΔEnrdfe (n, α, c, b, V0, V1, V2, Θ, σ, χ, j, l, s, m) appeared as functions of the parameters (α, c, b, V0, V1, V2) and the parameters of noncommutativity (Θ, σ, χ), in addition to the atomic quantum numbers (n, j, l, s, m). In both relativistic and nonrelativistic problems, we show that the corrections to the energy spectrum are smaller than for the main energy in the ordinary cases of RQM and NRQM. A straightforward limit of our results to ordinary quantum mechanics shows that the present results under the IDGDFDE-P model is are consistent with what is obtained in the literature. In the new symmetries of noncommutative quantum mechanics (NCQM), it is not possible to get the exact analytical solutions for l = 0 and l ̸ = 0. Only the approximate ones can be obtained. We have clearly shown that the Schr¨odinger and Klein–Gordon equations in the new symmetries can physically describe two Dirac equations and the Duffin–Kemmer equation within the IDGDFDE-P model in the extended symmetries.
A COMPLEMENTARY NOTE TO WELWITSCH’S MAP OF TRAVELLERS IN AFRICA
Authors: ALBUQUERQUE SARA , de M. FIGUEIRÔA SILVIA F. 
Published: May 2022

ABSTRACT
This note complements the article “Depicting the Invisible: Welwitsch’s Map of Travellers in Africa,” published earlier in Earth Sciences History (Albuquerque and Figueirôa 2018). The note contributes additional information concerning previously unknown names on the map that did not appear in the list of explorers in that earlier publication. The names of ten additional explorers have been deciphered from the map and added to the list from the earlier paper, thanks to the assistance of colleagues. Of the 94 entries originally noted on the map, 88 have now been identified. There is strong correspondence between that list of explorers and the contents of Friedrich Welwitsch’s personal library.
SYSTEMATIC LITERATURE REVIEW ON AGENTIC ENGAGEMENT: CLARIFYING A CO-CREATION PERSPECTIVE
Authors: Horlenko Kateryna , Kaminskiene Lina 
Published: May 2022

Co-creation of learning has been conceptualised as a learner-centred pedagogical approach with implications for students’ proactivity, metacognitive, and collaborative involvement. Due to the complexity of the concept, it is difficult to distinguish and measure in practice, with studies reporting measures for co-creative practices mostly in the context of higher education. This paper reviews the literature on student agentic engagement in Web of Science, ERIC and Scopus, providing links to the existing views on learning co-creation at schools. The research instruments developed for studying agentic engagement and autonomy support are discussed in connection to examining co-creation at the secondary education level.
WORKING MEMORY IN THE PROCESS OF TEACHING SONGS
Authors: Medne Dace , Vilde Ilze 
Published: May 2022

The control processes and mnemonic strategies used in working memory are important both in the general learning process and in the music learning process. In the acquisition of music, the working memory determines the formation of auditory notions, which is an essential dimension in the development of musicality. Its qualitative indicators are (1) accuracy - accurate perception and reproduction of memorized music material; (2) persistence - duration of remembrance. Therefore, it is pedagogically important to improve it at the primary school age, because working memory forms the basis for creating more complex conceptual content constructions both in music and in other fields. The aim of the research is to promote the development of working memory in the process of teaching songs. In order to achieve the goal of the research, a song teaching strategy for the development of working memory has been developed, a pedagogical observation of the music learning process for a duration of three years at the primary school level has been performed, and the obtained data have been analysed using descriptive statistics. The sample of the study consists of 200 primary school students. The data obtained in the article allow us to conclude that the purposefulness and regularity with which the chosen exercises are used, the quality of music perception and attention, and musical thinking all contribute to the development of musical memory in primary school music education. The relationship between song acquisition and working memory described in this publication expands the understanding of music educators and helps them improve their professional skills.
THE OPPORTUNITIES TO DEVELOP COMMUNICATION AND COOPERATION SKILLS AT CHILDREN'S COMMUNITY CARE HOMES
Authors: Gudzinskiene Vida , Raudeliunaite Rita 
Published: May 2022

The purpose of the article is to reveal the opportunities to develop communication and cooperation skills in children living at children’s community care homes (further on CCCHs) based on the experience of social workers working at CCCHs. Problematic question: What are real opportunities for children to develop communication and cooperation skills while living at CCCHs? Nine social workers, who work at CCCHs in seven different locations in Lithuania, participated in the research. The study revealed that, while living at CCCHS, the opportunities to develop communication and cooperation skills change in the positive direction. At CCCHs, a positive family environment, in which closer and warmer relationships form, is created, more time is devoted to mutual communication. Children develop communication and cooperation skills while creating home rules, negotiating and obliging themselves to stick to the set order, learning to create and maintain harmonious mutual realtionships, empasising attentiveness, politeness, empathy, as well as learning to resolve problems and conflicts in a constructive manner, conculting and agreeing regarding the ways to spend their leisure time. In addition, children, while expanding their social ties in their community, learn to coexist with others, as well as to develop social resilience while learning to resist the pressure of others, not to give in to bad influences, to trust their own strength and to take decisions independently.
DEVELOPMENT AND INITIAL VALIDATION OF THE SECOND VERSION OF THE MULTIDIMENSIONAL SOCIAL CAPITAL SCALE (MSCS V2)
Authors: Maķevica Dina , Šuriņa Sanita , Perepjolkina Viktorija , Mārtinsone Kristīne 
Published: May 2022

This article describes the development and initial validation of the second version of the Multidimensional Social Capital Scale (MSCS V2). The scale is based on the concept of Social Capital (SC) developed based on the results of the Rapid Review. The developed theoretical concept covers such types of SC as bonding, bridging, and linking, and there are two dimensions in each of these types: cognitive and structural. The initial version of the Multidimensional Social Capital Scale (MSCS) covered only the cognitive dimension of all three types of SC. This study aimed to develop an improved second expanded version of the MSCS V2 and to evaluate its psychometric properties. Data were collected online in the period from 11th June to 3rd October 2021, using a cross-sectional study design and a convenience sample strategy (N=353, 87% women and 13% men), aged between 18 and 80 years, M=41.8 years). As a result, the 25-item version of the MSCS V2 was developed. Exploratory factor analysis (EFA) revealed a 6-factor structure that encompasses the following types and elements of cognitive dimension: two types of bonding (Perceived social support or family members and close friends and Sense of belonging), two types of bridging (Perceived social support for acquaintances and General social trust), one type of linking (Institutional trust) and for Structural dimension: one type of bonding (Social participation). This 6-factor structure was approved using confirmatory factor analysis (CFA). Overall, the items are internally consistent on all scales (α = .73 - .90). Findings from this study showed significant evidence for the reliability and validity of the MSCS V2 and it would be advisable to repeat the study in a homogeneous sample, including full socio-demographic data.