bluuebunny/crossref_metadata_2025_split huggingface dataset:
Varicela en población privada de la libertad
Authors: Niño Ramírez Yessenia M. , Beltrán Lillian , Zúñiga M. Jubel David , Montes Castaño Dayana 
Published: August 2021

Antecedentes: La infección con la varicela zoster es mundial. La incidencia varía por grupos de edad, localización geográfica. En Colombia la transmisibilidad el virus se favorece por la multiplicidad de climas, aspectos geográficos y atmosféricos. En el año 2016 se notificaron 112.400 casos, 34.037 en población adulta, 744 fueron población privada de la libertad (PPL). La definición de brote en establecimientos carcelarios se da a partir de un caso. Condiciones de hacinamiento y el contexto social hacen interesante conocer el estudio de brote y las medidas de implementación realizadas.Objetivo: Describir los factores de riesgo, características demográficas y evaluar medidas de control de la varicela en el Centro de Prisiones y Prisiones de Seguridad Moderada(EPMSC) de Cali de 2017 a 2018Métodos: Se realizó un estudio observacional descriptivo de corte transversal entre el 2017 al 2018 en PPL, mediante registros, entrevistas y fichas de notificación se analizaron variables de tiempo, lugar y persona, se realizaron distribuciones de frecuencias, se calcularon medidas de tendencia central, tasas de ataque y proporciones por pabellón.Resultados: Fue un brote de fuente propagada, se registraron 146 casos. La tasa de ataque del brote (2017) fue de 2.2% y en 2018 fue de 0.4%. El pabellon con mayor tasa de ataque (2017) fue el 5 (4.9%) y en 2018 el 1A (2.5%). El hacinamiento en el 2017 fue de 264% y en el 2018 de 192%.Conclusiones: El hacinamiento y las condiciones de salud en los centros penitenciarios dificultan el control oportuno de las epidemias.
ОЦЕНКА ВОЗМОЖНОСТИ ИСПОЛЬЗОВАНИЯ МОЛОЧНО-БЕЛОГО КВАРЦА НОВОТРОИЦКОГО МЕСТОРОЖДЕНИЯ ДЛЯ ПОЛУЧЕНИЯ ВЫСОКОЧИСТОГО КВАРЦА (HPQ), ЮЖНЫЙ УРАЛ
Authors: Корекина Мария Александровна 
Published: August 2021

Актуальность. В связи с истощением запасов кварцевых месторождений прозрачного и полупрозрачного гранулированного кварца, являющихся традиционными источниками для получения высокочистого кварца (HPQ) для нужд высокотехнологичных отраслей производства, актуальной является оценка возможности использования для этих целей ранее не востребованных месторождений молочно-белого кварца. Цель. На основании изучения микроэлементного состава исходных и глубокообогащенных проб молочно-белого кварца разных генетических типов Новотроицкого месторождения выполнить оценку возможности их использования для получения высокочистого кварца (HPQ). Методы. Оценка перспективности кварцевого сырья дана на основе детального изучения петрографических особенностей и микроэлементного состава молочно-белого кварца методом ICP-OES спектроскопии. Результаты. Молочно-белый кварц месторождения крупно-гигантозернистый, интенсивно деформированный, разбит системой трещин, с резкими контактами с вмещающими чередующимися слюдистыми сланцами и кварцитами. В центральной части крупно-гигантозернистый кварц блокованный и разлистованный. В приконтактовой части кварц более минерализован, рекристаллизован, с содержанием новообразованных зерен в разных генетических типах от 3 до 50 %. Новообразованные зерна локализуются по полосам деформации, не содержат минеральных и флюидных включений и характеризуются высокой степенью чистоты. Во всех генетических типах, за исключением рекристаллизованного кварца с содержанием новообразованных зерен ~ 50 %, установлены высокие концентрации элементов-примесей, суммарно превышающие предельно допустимые для HPQ кварца. Это связано с наличием большого количества флюидных включений и трудностью их выделения из зерен кварца, а также сложностью удаления минеральных сростков с кварцем. Для получения высокочистого кварца пригоден интенсивно рекристаллизованный кварц с суммарным содержанием новообразованных зерен >50 % и элементов-примесей менее 50 ррm
WITHDRAWN: On the in situ elimination of pores during laser powder bed fusion of a titanium alloy
Authors: zhang ling , Liao Wenhe , Liu Tingting , Wei Huiliang , Zhang Changchun 
Published: August 2021

Abstract
The printing quality of the laser powder bed fusion (LPBF) components largely depends on the presence of various defects such as massive porosity. Thus, the efficient elimination of pores is an important factor to the production of a sound LPBF product. In this work, the efficacy of two in situ laser remelting approaches on the elimination of pores during LPBF of a titanium alloy Ti-6.5Al-3.5Mo-l.5Zr-0.3Si (TC11) were assessed using both experimental and computational methods. These two remelting methods are the surface remelting, and the layer-by-layer printing and remelting. A multi-track and multi-layer phenomenological model was established to compute the evolution of pores with the temperature and velocity fields. The results showed that surface remelting with a high laser power such as 180 W laser can effectively eliminate pores within three deposited layers. However, such a remelting cannot reach defects in deeper regions. Alternatively, the layer-by-layer remelting with a laser power of 180 W can effectively eliminate the pores formed in the previous layer in real time. The results obtained from this work can provide useful guidance for the in situ control of printing defects supported by the real time monitoring, feedback and operation systems of the intelligent LPBF equipment.
Duffy blood system and g6pd genetic variants in p. Vivax malaria patients from manaus, amazonas, brazil
Authors: Ferreira Natália Santos , Mathias Jéssica Lorena dos Santos , Albuquerque Sérgio Roberto Lopes , Almeida Anne Cristine Gomes , Dantas Ana Carla , Anselmo Fernanda Cozendey , Lima Emerson Silva , Lacerda Marcus Vinicius Guimarães , Nogueira Paulo Afonso , Ramasawmy Rajendranath , Gonçalves Marilda de Souza , Neto Jose Pereira Moura 
Published: August 2021

Abstract
Background

Over a third of the world’s population lives at risk of potentially severe Plasmodium vivax induced malaria. The unique aspect of the parasite’s biology and interactions with the human host make it harder to control and eliminate the disease. Glucose-6-phosphate dehydrogenase (G6PD) deficiency and Duffy-negative blood groups are two red blood cell variations shown to confer protection against malaria.
Methods

Molecular genotyping of G6PD and Duffy was performed in 225 patients with severe and non-severe malaria randomly admitted at a reference center for infectious disease from Manaus. For G6PD variants characterization of the variants, Real Time PCR (qPCR) was performed, while Duffy genotyping by PCR-RFLP.
Results

Of the 225 patients, 29 (12.94%) and 43 (19.19%) were carriers of the G6PD c.202G > A and c.376A > G, respectively. For the Duffy genotype (c.-67T > C in the GATA promoter region), 70 (31.11%) were phenotyped as Fy(a + b-), 98 (43.55%) Fy(a + b+), 56 (24.9%) Fy(a-b+) and 1 (0.44%) Fy(a-b-). The FY*01/FY*02 genotype was prevalent in both non-severe and severe malaria. In women, the FY*01/FY*02 allele occurred concomitantly with c.376A > G more frequently in non-severe malaria, while in men, this combination was predominant in severe malaria. Duffy phenotype Fy(a-b+) (p = 0.022) and genotypes FY*01/FY*01 / FY*02/FY*02 (p = 0.015) correlated with high parasitemia density before and after treatment.
Conclusions

Our results showed only one uncomplicated vivax malaria patient with Duffy phenotype Fy(a-b-). Heterozygous GATA variants did not confer protection against malaria infection in this study. Research on G6PD and Duffy antigen deficiencies has been valuable, particularly when focused on densely populated areas. Our results confirm possible genetic molding mechanisms in vivax malaria in our Amazon region and can help to improve the understanding of the relationship between G6PD deficiency and Duffy genotypes concomitantly in the protection or susceptibility to P. vivax infection. Molecular diagnosis before treatment may be necessary in the Amazonian population, regardless of the diagnosis of uncomplicated or severe malaria.
High School Students’ Emotional Perception and Attitudes Toward English Teacher’s Feedback in Cloud Classroom Learning Environments
Authors: Liu Xixi , Yu Liheng , Yu Zhonggen 
Published: August 2021

Abstract
Cloud classrooms are catching increasing attention in English teaching during the outbreak. This study, by using multiple correlation analysis, path analysis, and data collected from randomly selected 230 participants, explored the effects of students’ emotional perceptions and attitudes towards teaching feedback in cloud classroom learning environments. It was concluded that all emotional perceptions correlated significantly and positively, and of which learning motivation was the most significant effect, followed by interest. Besides, learning motivation could essentially predict the perceived teaching feedback in this learning environment. Furthermore, students with strong self-confidence could spark their learning motivation and interest in English learning. Concerning students’ attitudes towards teachers’ feedback, high-score students preferred more profound and euphemistic comments; medium-score students hoped to catch more attention and obtain positive feedback from teachers; poor-score students favored direct and explicit evaluations. These findings might be helpful to future researchers who attempt to discover non-verbal and peer feedback to students’ learning outcomes and emotions in technology-based learning environments.
Application of Machine Learning and Acoustic Predation Tags to Classify Migration Fate of Atlantic Salmon Smolts
Authors: Notte Daniela , Lennox Robert J. , Hardie David C. , Crossin Glenn T. 
Published: August 2021

Abstract
Mortality and predation of tagged fishes presents a serious challenge to interpreting results of acoustic telemetry studies. There is a need for standardized methods to identify predated individuals and reduce the impacts of “predation bias” on results and conclusions. Here, we use emerging approaches in machine learning and acoustic tag technology to classify out-migrating Atlantic salmon (Salmo salar) smolts into different fate categories. We compared three methods of fate classification; predation tag pH sensors and detection data, unsupervised k-means clustering, and supervised random forest combined with tag pH sensor data. Random forest models increased predation estimates by 9-32% compared to pH sensor data, while clustering reduced estimates by 3.5-30%. The greatest changes in estimates were seen in years with large class imbalance or low model accuracy. Both supervised and unsupervised approaches were able to classify smolt fate, however, in-sample model accuracy improved when using tag sensor data to train models, emphasizing the value of incorporating such sensors when studying predator-prone fish. Sensor data may not be sufficient to identify predation in isolation due to Type I and Type II error in predation sensor triggering. Combining sensor data with machine learning approaches should be standard practice to more accurately classify fate of tagged fish.
FURIN correlated with immune infiltration serves as a potential biomarker in SARS-CoV-2 infection-related lung adenocarcinoma
Authors: Luo Lianxiang , Li Manshan , Su Jiating , Yao Xinyue , Luo Hui 
Published: August 2021

Abstract
FURIN, as a proprotein convertase, has been found to be expressed in a variety of cancers and plays an important role in cancer. In addition, SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) requires FURIN to enter human cells. However, the role of FURIN in lung adenocarcinoma remains unclear. And the expression of SARS-CoV-2 related gene in lung adenocarcinoma has not been clarified. Therefore, in order to explore the prognostic value and mechanism of FURIN in lung adenocarcinoma, we performed bioinformatics analysis with Oncomine, TIMER (Tumor Immune Estimation Resource), GEPIA (Gene Expression Profiling Interactive Analysis), HPA (human protein atlas), UALCAN, PrognoScan, Kaplan-Meier plotter, cBioPortal, and LinkedOmics databases. And then We used GSE44274 in the GEO (Gene Expression Omnibus) database to analyze the expression of FURIN in LUAD patients who infected with SARS-CoV. FURIN was highly expressed in lung adenocarcinoma and was significantly associated with poor overall survival. FURIN expression was found to be correlated with six major permeable immune cells and with macrophage immune marker in LUAD patients. In addition, SARS-CoV-2 infection might affect the expression of FURIN. FURIN can be used as a promising biomarker for determining prognosis and immune infiltration in LUAD patients.
Menstrual hygiene practice and its determinants among Adolescent Girls in Sub-Saharan Africa: A systematic review and meta-analysis protocol
Authors: Anbesu Etsay Woldu , Aychiluhm Setognal Birara 
Published: August 2021

Abstract
Background: Poor menstrual hygiene practices can lead to gynecological problems, psychosocial stress, and reduced access to school. Menstrual hygiene has not received adequate attention in Sub-Saharan Africa. Despite this, there are fragmented and inconsistent findings in Sub-Saharan Africa. Therefore, this systematic review and meta-analysis aimed to estimate the pooled prevalence of good menstrual hygiene practice and identify its associated factors among adolescent girls in Sub-Saharan Africa. Methods: The protocol for this review was registered at PROSPERO with registration number: CRD42020165628. In this study, the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guideline will be used to report the protocol. Online electronic databases PubMed, Google Scholar, CINAHL and unpublished grey literature will be searched to retrieve available studies from January 1-May/2021. The selection, data extraction, and quality assessment of studies will be carried by two authors. Joanna Briggs Institute checklist will be used to assess the quality of the studies. Heterogeneity among studies will be examined using a chi-squared test and I-squared statistic. To investigate sources of heterogeneity, subgroup analyses and meta-regression will be done based on region and sample size. Sensitivity analysis will be conducted to identify influential studies. Publication bias will be examined by funnel plots and Egger’s test. The statistical analysis will be conducted using STATA version-14 software. A random-effect model will be used to estimate the pooled prevalence, and statistical significance will be determined at a p-value of <0.05.Discussion: Poor menstrual hygiene practice affects the health of millions of adolescent girls in developing countries. Currently, there are no synthesis research findings on the pooled prevalence of menstrual hygiene practice and its associated factor in Sub-Saharan Africa. Therefore, the findings of this systematic review and meta-analysis will be helpful to inform policy-makers, planners, and researchers to design appropriate interventions.
Exploration of Long-Range Surface Plasmon Resonance on Multilayer Single Mode Optical Fiber With Function of MgF2
Authors: Zakaria Rozalina , Zainuddin N.A.M. , Fahri M.A.S. Ahmad , Kamkar Amrita , Zahrani Fahad Ahmed Al , Patel Shobhit K. , Ahmed Kawsar 
Published: August 2021

Abstract
Multilayer models for single mode optical fiber based on Long Range Surface Plasmon Resonance (LRSPR) coated with silver (Ag) and gold (Au) with dielectric function of MgF2 are introduced. Properties for the models are theoretically and experimentally reported in this work. Firstly, the performances of different models are investigated using COMSOL simulation. Different combinations of magnesium fluoride (MgF2) and Ag/Au material embedded layers are applied to observed functionality of dielectric layers underneath the analyte. In theoretical analysis, MgF2-Ag and MgF2Ag-MgF2 layers conveys the best performance in sensing. The combination of plasmonic material Ag with MgF2 rather than Au shows higher sensitivity response. The experimental has been carried out with these configurations where exhibit the sensitivities of 1762.5 nm/RIU and 1250 nm/RIU at 1.371.38 and 1.33-1.34 RI range respectively for silver-based models. The outcomes indicate the proposed LRSPR based models with specific dielectric where here MgF2 found to be a strong match in sensing applications.
Comparison of Changes in Number of Hyperreflective Dots After İntravitreal Ranibizumab or Dexamethasone İmplant in Patients with Branch Retinal Vein Occlusion
Authors: Karalezli Aylin , Kaderli Sema , Kaderli Ahmet , Kaya Cansu , Sul Sabahattin 
Published: August 2021

Abstract
Purpose: To compare the effect of intravitreal ranibizumab (IVR) or intravitreal dexamethasone implants (IVD) on regression of hyperreflective dots (HRDs) on optical coherence tomography (OCT) B-scan in patients with branch retinal vein occlusion (BRVO). Methods: 37 eyes of 37 patients with cystoid macular edema who received IVR or IVD and followed up for at least 12 months were included in this study. The patients were divided into three groups according to intravitreal treatment. Group 1 consisted of 12 eyes who received only IVD, group 2 consisted of 10 eyes who received only IVR on a pro re nata and group 3 consisted of 15 eyes who received both IVD and IVR. OCT parameters (CMT, number of HRDs, status of external limiting membrane (ELM) and ellipsoid zone (EZ)) and best-corrected visual acuity (BCVA) were compared between the groups over the follow-up time. HRDs were categorized as HRD in inner retinal layers (from the internal limiting membrane to the inner nuclear layer) or HRD in outer retinal layers (from the outer plexiform layer to the outer border of the photoreceptor layer).Results: There was no significant difference between groups in terms of BCVA, CMT, HRDs in the inner and the outer retinal layers at baseline visit. (p˃0.05 for all) Comparing the baseline values in all groups, a significant decrease was observed in CMT in the first year. (For group 1; p=0.013, group 2; p=0.010; group 3, p<0.001) The BCVA was significantly increased after 1 year in all groups. (p=0.001, p=0.006, p<0.001) The mean number of HRDs in inner and outer retinal layers were significantly decreased in group 1 and group 3. (For group 1; p<0.001, p=0.001, for group 3; p<0.001, p<0.001) However, there was no significant difference in terms of the mean number of HRDs in inner and outer retinal layers for group 2. (p=0.134, p=0.477) At the first year, the number of HRDs in inner and outer retinal layers was significantly lower in group 1 and group 3 than group 2. (For inner HRDs; group 1 vs. group 2 p=0.007, group 2 vs. group 3 p<0.001. For outer HRDs group 1 vs. group 2 p<0.001, group 2 vs. group 3 p<0.001.) The BCVA was higher in group 3 than group 2 at 1year. (p=0.048). There was no significant difference in terms of post-treatment CMT and the number of HRDs between group 1 and group3 in posthoc tests (p=0.621, p=0.876, and p=0.632).Conclusion: The reduction in HRDs at 12 months and better BCVA after IVD intimates that the HRDs should be considered as inflammatory markers in the follow-up of CME in BRVO. Thus, IVD injection could be more appropriate for patients with higher HRDs after BRVO.
Drop race: How electrostatic forces influence drop motion
Authors: Li Xiaomei , Bista Pravash , Stetten Amy , Bonart Henning , Schür Maximilian , Hardt Steffen , Bodziony Francisco , Marschall Holger , Saal Alexander , Deng Xu , Berger Rüdiger , Weber Stefan , Butt Hans-Jürgen 
Published: August 2021

Abstract
Water drops sliding down inclined planes are an everyday phenomenon and are important in many technical applications. Previous understanding is that the motion is mainly dictated by viscous and capillary forces. Here we demonstrate that, in addition to these forces, drops on hydrophobic surfaces are affected by self-generated electrostatic forces. In a novel approach to determine forces on moving drops we imaged their trajectory when sliding down a tilted surface and apply the equation of motion. We found that drop motion on low-permittivity substrates is significantly influenced by electrostatic forces. Sliding drops deposit a negative charge on the surface, which interact with the positively charged drops. We derive an analytical model to describe the force and validate it by numerical computations. The results indicate how to describe and facilitate drop motion in applications, such as in microfluidics, water management on car surfaces, and the creation of sliding drop electrical generators.
Relationships Between Benthic Infauna and Groundwater Eutrophication On A Sandy Beach in Southern Brazil
Authors: Lorenzi Luciano , Mayer Devon Gebauer , Reginato Bruna Conte , Pagliosa Paulo Roberto , Dantas David Valença , Gentil Eduardo , Valencia Vladimir G. Toro 
Published: August 2021

Abstract
Urban expansion in Brazilian coastal zones has caused various anthropic impacts on coastal marine ecosystems that have resulted from unorganized use and the lack of infrastructure projects. The inadequate disposal of domestic and industrial effluents in coastal waterbodies is notable, which can cause severe environmental problems. For sandy beaches, the relationships between the contamination of groundwater with domestic sewage and the possible effects on spatial and temporal variations in the density and composition of benthic infauna are still poorly understood. This work aimed to relate variations in benthic infaunal associations with the concentrations of groundwater nutrients in summer and winter on Enseada Beach. The greater concentrations of nutrients in water percolating through the sediment in the summer, increasing of domestic effluents, and periods of intense precipitation increased the contamination of the surface and groundwater. This contributes to an increase in the population density of Thoracophelia furcifera, demonstrating its use as an indicator of eutrophication of the groundwater, allowing monitoring and contribution to actions aimed at improving the environmental quality of sandy beaches.
The Impact of Delirium On Prognosis In Stroke: A Systematic Review and Meta-Analyses of Observational Studies
Authors: zhang jing , wang xin , wang jie , liu kai , he tao , zhang xiya 
Published: August 2021

Abstract
Background The outcomes of post-stroke delirium are inconsistent. Therefore, we conduct a meta-analysis to provide a comprehensive description of the impact of delirium on the outcomes including including length of hospital stay and inpatient mortality after stroke. Methods We searched electronic databases including PubMed, Google scholar, Web of Science and Cochrane Library databases up to April, 2021. Fixed-effect or random-effect model was used to summary odds ratio (OR) and mean difference (MD ) with 95% confidence interval (CI). Results 13 individual studies with total of 3592 patients met the inclusion criteria. The summary results revealed that stroke patients with delirium increased risk of inpatient mortality (OR = 6.35, 95% CI: 4.35–9.25, p < 0.0001), and had longer length of hospital stay (MD = 5.93, 95% CI: 2.79–9.07, p < 0.0001) compared to non-delirious patients. Conclusions Delirium is associated with unfavorable outcomes in patients with stroke, particularly in higher inpatient mortality and longer length of stay. We should pay more attention to this clinical problem and managed appropriately to prevent poor prognosis.