bluuebunny/crossref_metadata_2025_split huggingface dataset:
Satisfaction with remote teaching during the first semester of the COVID-19 crisis: Psychometric properties of a scale for health students
Authors: Pérez-Villalobos Cristhian , Ventura-Ventura Juan , Spormann-Romeri Camila , Melipillán Roberto , Jara-Reyes Catherine , Paredes-Villarroel Ximena , Rojas-Pino Marcos , Baquedano-Rodríguez Marjorie , Castillo-Rabanal Isidora , Parra-Ponce Paula , Bastías-Vega Nancy , Alvarado-Figueroa Débora , Matus-Betancourt Olga 
Published: April 2021

Introduction
Due to the health crisis caused by the COVID-19 pandemic, 220 million college students in the world had to halt face-to-face teaching and migrate to what has been called Emergency Remote Teaching, using virtual media, but without adequate preparation. The way this has impacted the student body and its satisfaction with the training process is unknown and there are no instruments backed by specific validity and reliability studies for this teaching context. This is why this study aims to analyze the psychometric properties of the Remote Teaching Satisfaction Scale applied to Chilean health sciences students.

Method
Quantitative study by means of surveys. We surveyed 1,006 health careers undergraduates chosen by convenience sampling. They came from six Chilean universities, located over a distance of 3,020 kilometers and followed 7 different careers. Women comprised the 78.53%. They answered the Remote Teaching Satisfaction Scale online to evaluate their perception of the first Emergency Remote Teaching term in 2020.

Results
A descriptive analysis of the items showed a moderate to positive evaluation of the teaching. The Confirmatory Factorial Analysis showed an adequate adjustment of the theoretical four factors model to the data obtained (CFI = 0.959; TLI = 0.953; RMSEA = 0.040). Correlations among factors oscillated from r = 0.21 to r = 0.69. The measurement invariance analysis supported the Configural, Metric and a partial Scalar model. Differences were found in three of the four factors when comparing the first-year students with those of later years. Finally, the Cronbach’s α and McDonald’s ω coefficients were over 0.70.

Discussion
The results display initial psychometric evidence supporting the validity and reliability of the Remote Teaching Satisfaction Scale to assess academic satisfaction in Chilean health careers students. Likewise, it is seen that first-year students show higher satisfaction levels about the implemented teaching.
LOXL1 gene polymorphisms are associated with exfoliation syndrome/exfoliation glaucoma risk: An updated meta-analysis
Authors: Li Xiaoyan , He Jie , Sun Jian 
Published: April 2021

Background
Single nucleotide polymorphisms (SNPs) in the gene encoding LOXL1 are risk factors for exfoliation syndrome and exfoliation glaucoma. This meta-analysis comprehensively investigated the association between LOXL1 gene polymorphisms (rs1048661, rs3825942, and rs2165241) and the risk of exfoliation syndrome/exfoliation glaucoma (XFS)/(XFG).

Methods
All eligible case-control studies, published before August 17, 2020, were searched on Medline (Ovid), PubMed, CNKI, EMBASE, and Wanfang databases.

Results
In total, 5022 cases and 8962 controls were included in this meta-analysis. Significant associations between LOXL1 gene polymorphisms and XFS/XFG risk was observed in the disease types-based subgroups. In addition, in the subgroup analysis of ethnicity, positive associations between LOXL1 gene polymorphisms (rs1048661, rs3825942, and rs2165241) and XFS/XFG risk were found in Caucasians. Furthermore, rs1048661 and rs3825942 polymorphisms were related to XFS/ XFG risk in Asians; however, no significant association was observed between the LOXL1 gene rs2165241 polymorphism and XFS/XFG risk in Asians. In addition, rs1048661 and rs3825942 correlated with XFS/XFG susceptibility in Africans.

Conclusions
Our results implicate LOXL1 gene polymorphisms as XFS/XFG risk factors, especially in Caucasians.
Distribusi dan Kelimpahan Kista Pyrodinium bahamense di Perairan Rawan Marak Alga Berbahaya di Indonesia
Authors: Rachman Arief , Intan Mariana D. B. , Thoha Hikmah , Sianturi Oksto Ridho , Masseret Estelle 
Published: April 2021

<strong>Distribution and abundance of <em>Pyrodinium bahamense</em> cyst in the harmful algal blooms risk waters in Indonesia. </strong><em>Pyrodinium bahamense</em>as Harmful Algal Blooms (HABs) is one of the rising environmental problems in the coastal areas of Southeast Asia, particularly in Indonesia. Cyst bank formed after the blooms of <em>P. bahamense</em> is a potential source for the future blooming events. Therefore, an effort to describe the distribution and abundance of <em>P. bahamense</em> cyst banks in Indonesian coastal waters is necessary as a part of the mitigation strategy against the negative impacts of those toxic dinoflagellate blooms. This study was done as a desk study, which included a literature study, reanalysed of previous research data, and reanalysed of preserved samples or stored raw samples. Data and samples used in this study were collected and analysed from part of past researches in Lampung Bay, Jakarta Bay, Cirebon coastal waters, and Ambon Bay. This study also included an analysis to determine the <em>P. Bahamense </em>HABs risk level in the studied areas based on the cyst density and distribution data. Results showed a low density of <em>P. bahamense </em>cyst in Lampung Bay and Jakarta Bay, with cyst density &lt;50 cysts.g<sup>-1</sup> wet sediment. In contrast, the bottom sediments of Ambon Bay and Cirebon coastal waters contained high cyst density, which reached &gt;1,000 cysts.g<sup>-1</sup> wet sediment. Based on those data, the <em>P. Bahamense </em>HABs risk in Jakarta Bay and Lampung Bay would be generally much lower compared to Ambon Bay and Cirebon waters. The existence of cyst banks in those coastal waters may indicate a possibility of future blooms of <em>P. bahamense</em>.
Atendimento Escolar no Hospital Universitário da Universidade Federal do Maranhão: entre avanços e limites na formação inicial do pedagogo
Authors: Lima Maria Socorro Lucena , Rabelo Francy Sousa , Silva Marilize de Morais 
Published: April 2021

Esta pesquisa visa compreender os avanços e os limites do atendimento escolar no Hospital Universitário da Universidade Federal do Maranhão através do Projeto Estudar, uma ação saudável. O aporte teórico-metodológico utilizou-se do levantamento bibliográfico, baseando-se em autores como, Fonseca (1999; 2008), Taam (2004), entre outros e da pesquisa de campo, cujo lócus foi o Projeto de Extensão supracitado e as técnicas de coleta de dados foram a observação participante e a entrevista semi-estruturada com alunas do Curso de Pedagogia, participantes desta experiência como bolsistas e voluntárias. Os resultados apontaram como um dos avanços, a participação efetiva das crianças nas atividades promovidas pelo atendimento escolar hospitalar no projeto reaproximando-as com o cotidiano escolar e quanto aos limites, tem-se a ausência de discussões sobre educação em espaços não escolares no currículo, da formação do pedagogo.
The Effect of Environmental Disclosure and Performance on Profitability in the Companies Listed on the Stock Exchange of Thailand (SET)
Authors: Wahyuningrum Indah Fajarini Sri , Amal Muhammad Ihlashul , Sularsih Suci 
Published: April 2021

The main objective of this study is to determine the empirical evidence of the effect of environmental disclosure, environmental performance, company age, and company size on profitability. The purposive sampling method was used to determine the sample of companies and obtained 85 companies from a total population of 100 large companies listed on the Thailand Stock Exchange (SET) in 2018. The data analysis technique used was multiple linear regression analysis using analysis tool IBM SPSS Statistics version 26. The results of this study prove that environmental disclosure has a significant positive effect on profitability. Environmental performance and company size have a significant negative effect on profitability. On the other hand, company age is not proven to have a significant effect on profitability. Based on the research results, it can be concluded that more extensive environmental disclosure is able to increase the achievement of profitability. However, company age is not a factor affecting profitability. Meanwhile, company size and environmental performance as measured by total assets and the existence of ISO 14001 certifications are proven to reduce the level of company profitability. This study also has several limitations, including the time period which is limited to only one time period, namely 2018. It is expected that further studies can expand the time period by more than one year. This is since using a time period of more than one year can illustrate the effect of environmental disclosure and environmental performance, company age and company size on the profitability achieved by the companies. In addition, it is expected that the results of this study can provide input to companies to be more concerned regarding company performance activities, especially on the environment because there are still many companies that have low levels of environmental disclosure even though environmental disclosure in Thailand is still voluntary.
Computational studies of the mitochondrial carrier family SLC25. Present status and future perspectives
Authors: Pasquadibisceglie Andrea , Polticelli Fabio 
Published: April 2021

Abstract
The members of the mitochondrial carrier family, also known as solute carrier family 25 (SLC25), are transmembrane proteins involved in the translocation of a plethora of small molecules between the mitochondrial intermembrane space and the matrix. These transporters are characterized by three homologous domains structure and a transport mechanism that involves the transition between different conformations. Mutations in regions critical for these transporters’ function often cause several diseases, given the crucial role of these proteins in the mitochondrial homeostasis. Experimental studies can be problematic in the case of membrane proteins, in particular concerning the characterization of the structure–function relationships. For this reason, computational methods are often applied in order to develop new hypotheses or to support/explain experimental evidence. Here the computational analyses carried out on the SLC25 members are reviewed, describing the main techniques used and the outcome in terms of improved knowledge of the transport mechanism. Potential future applications on this protein family of more recent and advanced in silico methods are also suggested.
Evaluation of red blood cell parameters provided by the UF-5000 urine auto-analyzer in patients with glomerulonephritis
Authors: Mizuno Genki , Hoshi Masato , Nakamoto Kentaro , Sakurai Masayo , Nagashima Kazuko , Fujita Takashi , Ito Hiroyasu , Hata Tadayoshi 
Published: April 2021

Abstract

Objectives
The microscopic examination of hematuria, a cardinal symptom of glomerulonephritis (GN), is time-consuming and labor-intensive. As an alternative, the fully automated urine particle analyzer UF-5000 can interpret the morphological information of the glomerular red blood cells (RBCs) using parameters such as UF-5000 small RBCs (UF-%sRBCs) and Lysed-RBCs.

Methods
Hematuria samples from 203 patients were analyzed using the UF-5000 and blood and urine chemistries to determine the cut-off values of RBC parameters for GN and non-glomerulonephritis (NGN) classification and confirm their sensitivity to the IgA nephropathy and non-IgA nephropathy groups.

Results
The UF-%sRBCs and Lysed-RBCs values differed significantly between the GN and NGN groups. The cut-off value of UF-%sRBCs was >56.8% (area under the curve, 0.649; sensitivity, 94.1%; specificity, 38.1%; positive predictive value, 68.3%; and negative predictive value, 82.1%), while that for Lysed-RBC was >4.6/μL (area under the curve, 0.708; sensitivity, 82.4%; specificity, 56.0%; positive predictive value, 72.6%; and negative predictive value, 69.1%). Moreover, there was no significant difference in the sensitivity between the IgA nephropathy and non-IgA nephropathy groups (87.1 and 89.8% for UF-%sRBCs and 83.9 and 78.4% for Lysed-RBCs, respectively). In the NGN group, the cut-off values showed low sensitivity (56.0% for UF-%sRBCs and 44.0% for Lysed-RBCs).

Conclusions
The RBC parameters of the UF-5000, specifically UF-%sRBCs and Lysed-RBCs, showed good cut-off values for the diagnosis of GN.
IFCC interim guidelines on rapid point-of-care antigen testing for SARS-CoV-2 detection in asymptomatic and symptomatic individuals
Authors: Bohn Mary Kathryn , Lippi Giuseppe , Horvath Andrea R. , Erasmus Rajiv , Grimmler Matthias , Gramegna Maurizio , Mancini Nicasio , Mueller Robert , Rawlinson William D. , Menezes María Elizabeth , Patru Maria-Magdalena , Rota Fabio , Sethi Sunil , Singh Krishna , Yuen Kwok-Yung , Wang Cheng-Bin , Adeli Khosrow 
Published: April 2021

Abstract
With an almost unremittent progression of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections all around the world, there is a compelling need to introduce rapid, reliable, and high-throughput testing to allow appropriate clinical management and/or timely isolation of infected individuals. Although nucleic acid amplification testing (NAAT) remains the gold standard for detecting and theoretically quantifying SARS-CoV-2 mRNA in various specimen types, antigen assays may be considered a suitable alternative, under specific circumstances. Rapid antigen tests are meant to detect viral antigen proteins in biological specimens (e.g. nasal, nasopharyngeal, saliva), to indicate current SARS-CoV-2 infection. The available assay methodology includes rapid chromatographic immunoassays, used at the point-of-care, which carries some advantages and drawbacks compared to more conventional, instrumentation-based, laboratory immunoassays. Therefore, this document by the International Federation for Clinical Chemistry and Laboratory Medicine (IFCC) Taskforce on COVID-19 aims to summarize available data on the performance of currently available SARS-CoV-2 antigen rapid detection tests (Ag-RDTs), providing interim guidance on clinical indications and target populations, assay selection, and evaluation, test interpretation and limitations, as well as on pre-analytical considerations. This document is hence mainly aimed to assist laboratory and regulated health professionals in selecting, validating, and implementing regulatory approved Ag-RDTs.
Silica extraction from bauxite reaction residue and synthesis water glass
Authors: Zhao Yunlong , Zheng Yajie , He Hanbing , Sun Zhaoming , Li An 
Published: April 2021

Abstract
Bauxite reaction residue (BRR) produced from the poly-aluminum chloride (PAC) coagulant industry is a solid acidic waste that is harmful to environment. A low temperature synthesis route to convert the waste into water glass was reported. Silica dissolution process was systematically studied, including the thermodynamic analysis and the influence of calcium and aluminum on the leaching of amorphous silica. Simulation studies have shown that calcium and aluminum combine with silicon to form hydrated calcium silicate, silica–alumina gel, and zeolite, respectively, thereby hindering the leaching of silica. Maximizing the removal of calcium, aluminum, and chlorine can effectively improve the leaching of silicon in the subsequent process, and corresponding element removal rates are 42.81%, 44.15%, and 96.94%, respectively. The removed material is not randomly discarded and is reused to prepare PAC. The silica extraction rate reached 81.45% under optimal conditions (NaOH; 3 mol L−1, L S−1; 5/1, 75°C, 2 h), and sodium silicate modulus (nSiO2:nNa2O) is 1.11. The results indicated that a large amount of silica was existed in amorphous form. Precipitated silica was obtained by acidifying sodium silicate solution at optimal pH 7.0. Moreover, sodium silicate (1.11) further synthesizes sodium silicate (modulus 3.27) by adding precipitated silica at 75°C.
Characterization of mechanically alloyed Fe based and MoNiAl+Al2O3 reinforced composites
Authors: Osman Yilmaz S. , Teker Tanju , Eker Hüseyincan 
Published: April 2021

Abstract
Fe-MoNiAl-Al2O3 powders were mechanically alloyed by a SPEX type attritor. The Fe based composite samples were reinforced with complex mechanically alloyed Fe-MoNiAl-Al2O3 particles in different ratios and Fe matrix composites were obtained. Scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), elemental surface mapping and microhardness tests were used to analyze the microstructures of the composites. The sintered composites showed that thin Al2O3 particles were dispersed. High volume fractions of the reinforcement having nanometer dimensions were produced in metallic matrices. Additionally, as the content of Al2O3 increased, the micro-hardness increased, which indicates that fine Al2O3 particles had a reinforcing effect.
Migration and Reaction of Sulfate Ions in Concrete under Stray Current
Authors: Zhang Lu , Niu Ditao , Wen Bo , Peng Gang , Zhang Yongli 
Published: April 2021

Abstract
The article presents a study on the influence of stray current on the migration and reaction of sulfate ions in concrete. The amount of sulfate ions in concrete is determined using the barium sulfate weighing method. The thickness of the deterioration damage layer of concrete is studied using an ultrasonic flat measurement method, and the thickness prediction model of the concrete deterioration damage layer is established to consider the influence of the intensity of the stray current. The results indicate the following: (1) the greater the stray current is, the more obvious the effect; (2) the influence of the current intensity on the migration of sulfate ions in concrete is 1.55–2.57 times that of the control group without stray current; (3) under stray current, the ratio of the reaction amount of sulfate ions in the concrete to the total amount of sulfate ions is suppressed, whereas the ratio of the reacted sulfate ions to the total amount of sulfate ions increases from 58.8 to 74.5 % with an increase in the current intensity; finally, (4) under stray current and sulfate, the thickness of the concrete damage layer increases with an increase in the deterioration age and the current intensity. The influence coefficients of stray current on the sulfate ion migration and on the sulfate ion reaction are proposed, and the evolution equation of the amount of sulfate ions in the concrete under the action of stray current with the deterioration age is obtained.
Impact of Temperature on the Spray Characteristics of Jatropha Curcas Biodiesel and Diesel Fuel Blends
Authors: Deshmukh Gopal Kumar , Rehman Ameenur , Gupta Rajesh 
Published: April 2021

Abstract
There is an increasing demand of energy because of an increase in the number of vehicles with internal combustion engines, because of which industrial and automotive fields are concerned about fossil fuel depletion, environmental issues, and energy conservation. These challenges force the world to explore other alternative sources of energy. The extensive use of biodiesel as compression ignition engine fuel has further compelled the researchers to regulate the emission and improve the engine performance. Fuel spray behavior affects mixture formation, and this affects engine combustion and performance. This research work involves the evaluation of the relationship between spray parameters of used Jatropha curcas biodiesel fuel, including spray penetration, cone angle, and preheating temperature, compared with diesel fuel, conducted at ambient condition. In addition to this, the high-speed spray pattern photography is undertaken by using single-hole and multi-hole injectors. The spray behavior is analyzed through spray parameters such as spray cone angle and spray penetration for all test fuels. The fuel temperature has a strong relationship with spray behavior at high temperatures; as the fuel temperature increases, the spray tip penetration decreases due to the evaporation of the fuel having a low boiling point and good fuel atomization, which leads to smaller droplets and an increase in spray cone angle with the increase in temperature.
HİPOMİNERALİZE MİNE DEFEKTLERİNİN VİTAL BEYAZLATMA SONRASI ER:YAG LAZER İLE MİNİMAL İNVAZİV REHABİLİTASYONU: OLGU SUNUMU
Authors: ÖZKANOĞLU Seda , HUBBEZOĞLU İhsan , GÖKTOLGA AKIN Emine Gülşah 
Published: April 2021

Diş hekimliği uygulamalarında fonksiyon ve fonasyonun yanısıra doğal diş
estetiğinin de hastaya yeniden kazandırılması gün geçtikçe önem kazanmaktadır.
Estetik sorunların çözümünde günümüzde daha konservatif tedavi seçenekleri
tercih edilmektedir. Son yıllarda teknolojik gelişmeleri takiben lazer
uygulamaları oldukça popüler hale gelmiştir. Lazer teknolojisindeki
gelişmelerle beraber her geçen gün lazerin diş hekimliğinde kullanımı ile
ilgili olarak yeni olanaklar ortaya çıkmaktadır. Diğer geleneksel yöntemlere
göre lazer uygulaması, lazer ışınının kolaylıkla yönlendirilebilmesi ve yüksek
miktarda enerjinin küçük noktalara odaklanabilmesi nedeniyle oldukça ileri bir
tedavi yöntemidir. Bu vaka sunumunda; ön
grup dişlerdeki mine defektlerinin vital beyazlatma uygulaması sonrası, Er:YAG
lazer ile defekten minimal doku kaldırılıp, direkt kompozit rezin ile
restorasyonunun tamamlanması hedeflenmiştir.

Anahtar Kelimeler: estetik, lazer, kompozit
SOLID PHASE EXTRACTANTS BASED ON POROUS POLYMERS IMPREGNATED WITH MULTIDENTATE CHELATING LIGANDS FOR ACTINIDE AND LANTHANIDE REMOVAL
Authors: Belikov Кonstantin , Bryleva Ekateryna , Bunina Zinaida , Varchenko Victoria , Andryushchenko Anna , Shcherbakov Ilias , Kalchenko Vitaliy , Drapailo Andriy , Zontov Alexander , Zontova Larysa 
Published: April 2021

Introduction. Treatment and disposal of radioactive wastes as well as monitoring of radioactive isotope content in environmental objects are actual tasks in the developed world. Lanthanide and transuranium element removal from spent nuclear fuel of nuclear power plants allows decreasing waste amount to be dumped and diminishing the risk of environmental pollution by radionuclides.
Problem Statement. Considering extreme radiotoxicity of transuranium elements and tight standards restricting their activity in air and water, there is an urgent need to develop accurate and highly sensitive methods for pollution control.
Purpose. Development of solid phase extractants (SPEs) based on porous polymers impregnated with multidentate chelating ligands for lanthanide, uranium and transuranium element removal from aqueous solutions.
Materials and Methods. The materials used are porous divinylbenzene polymers of POROLAS brand and styrene-divinylbenzene copolymers from Smoly SE (Kamianske); multidentate chelating ligands of actinides and lanthanides such as N,N,N´,N´-tetra-n-octyl-oxapentane-1,5-diamide (TODGA) and carbamoyl phosphine oxides (CMPO); sorbent from TrisKem (France) based on TRU Resin (Eichrom Industries, Inc.). The research techniques are inductively coupled plasma atomic emission spectrometry, IR spectroscopy, scanning electron spectroscopy, spectrofluorimetry.
Results. The solid-phase extractants (SPEs) for actinide and lanthanide removal from aqueous solutions have been synthesized by impregnation of porous polymeric POROLAS matrices and TODGA, CMPO-(PhOct) and CMPO-(Ph2). Sorption kinetics has been studied and capacity values for the different sorbents have been estimated. Extractive columns for uranium and europium concentration have been manufactured.
Conclusions. SPEs studied demonstrate a high efficiency in removing uranium and europium from aqueous solutions. Due to their characteristics obtained materials may be used for preconcentration of target ions in radioecologycal monitoring procedures.