bluuebunny/crossref_metadata_2025_split huggingface dataset:
El principio de variabilidad como factor determinante en la táctica individual del saque en voleibol masculino de nivel internacional
Authors: Ureña Espa Aurelio , Santos del Campo José Antonio 
Published: January 2023

La investigación en el voleibol masculino de alto nivel en los últimos años otorga al saque una gran importancia en la evolución de este deporte. La técnica de saque empleada se revela como un factor decisivo, sin embargo. No conocemos si el rendimiento de esta acción se mantiene de manera uniforme o varia la evolución del rendimiento en el transcurso de la competición, diferenciando las mediciones por sets.Se tomó como población objeto de estudio a los jugadores de los juegos olímpicos de Atlanta en 1996, ultimo acontecimiento de la máxima relevancia den el voleibol internacional. Un total de doce equipos nacionales masculinos, confrontados en 42 encuentros, distribuidos en 149 sets. Para seleccionar la muestra se recurrió a 33 sets de la competición masculina, de entre 14 encuentros, de los que se registraron 2030 casos de cambio de saque.Se encontró que la variable set influye, de una manera altamente significativa, en el rendimiento de recepción, lo que nos sugiere determinadas exigencias en el planteamiento estratégico del saque.
narrativa de Gabriel García Márquez vista por Ángel Rama y la recepción de su crítica en Colombia
Authors: Marín Colorado Paula Andrea 
Published: January 2023

Las dos primeras partes de este artículo tienen como objetivo presentar el trabajo crítico de Ángel Rama sobre la obra narrativa de Gabriel García Márquez: García Márquez: edificación de un arte nacional y popular. Este trabajo, en principio, correspondió a un curso ofrecido por Rama en la Universidad Veracruzana en 1972; el curso fue transcrito y publicado póstumamente en la revista Texto Crítico en 1985, y luego fue publicado por la Facultad de Humanidades y Ciencias de la Universidad de la República (Montevideo) en 1987. En Colombia, este texto empieza a conocerse, sobre todo, a partir de 1991, fecha en la que se publica en Cuadernos de la Gaceta, del Instituto Colombiano de Cultura. Por esta razón, la tercera parte de este artículo tomará la fecha de 1991 como referencia para la realización de un trabajo de revisión y seguimiento (en libros y revistas) de la influencia de la crítica de Rama en la recepción y estudio de la obra de García Márquez en Colombia.
Descentramiento del sujeto y de la escritura en la poesía de León de Greiff
Authors: Salamanca Óscar 
Published: January 2023

Este artículo analiza la concepción descentrada del sujeto y de la escritura en algunos poemas de León de Greiff. Se desliga de los análisis enfocados en su estética modernista y propone otros conceptos para sustentar su estética de avanzada, como la subjetividad descentrada o la crítica de la modernidad a partir de la relación entre autonomía y soberanía del arte. Se plantea una perspectiva de análisis que justifica la participación de la obra de León de Greiff en una estética ya lejana del modernismo y enfocada en inquietudes contemporáneas sobre el sujeto fragmentado y su desintegración en la escritura.
Entre hispanofilia y afinidades latinoamericanas: José Ortega y Gasset y Alfonso Reyes en la revista Mito
Authors: Moreno H. Francy L. 
Published: January 2023

El siguiente trabajo es una aproximación a algunas de las relaciones intelectuales que se estrecharon alrededor de la revista Mito (Bogotá, 1955-1962); reflexiona sobre rupturas y filiaciones explícitas en sus páginas y muestra que manifestarse en contra o a favor de Ortega y Gasset y Alfonso Reyes, dos figuras reconocidas en el mundo intelectual de mediados de siglo XX, constituía una toma de posición en los campos literarios continental y nacional, a favor de cierta noción sobre lo literario.
REVEALING AND DETERMINING THE FORMS OF COMPONENTS IN THE PRODUCT OF INTERACTION OF EUROPIUM (III) FLUORIDE WITH MELT OF NaCl-KCl
Authors: Stoianova I. V. , Zinchenko V. F. , Chivireva N. O. , Doga P. G. , Volchak G. V. 
Published: January 2023

As part of the study of the solubility of lanthanide fluorides in salt melts, a study of the EuF3-NaCl-KCl system (upper and bottom parts) was carried out. This system is of particular interest due to the fact that Europium has two oxidation states (+2 and +3), and chloride ions are weak reducing agents. The studies were carried out by chemical and nondestructive spectroscopic methods. As for the latter, solid-phase luminescence (SPL), diffusereflectance spectroscopy (DRS), and X‑ray diffraction phase analysis (XRD) were used. The total content of lanthanides in the upper and bottom parts of the samples was determined spectrophotometrically and complexonometrically, respectively, and the content of Eu2+ was determined spectrophotometrically by the weakening of the KMnO4 color using redox reactions between Eu2+–V(V) and V(IV) (the content is equivalent to Eu2+) – KMnO4. The system (upper part) LaF3-NaCl-KCl was also studied (for Lanthanum the only oxidation state is +3) for the comparison.
It was shown that during the dissolution of Europium fluoride in the NaCl-KCl melt, a partial reduction of Eu3+ to Eu2+ occurs.
The data of SFL, DRS and chemical analysis showed that Eu2+ is the dominant form of europium in the upper part of the sample, and the content of EuF2 found by the chemical method (2.54% wt.) is close to the sum of the contents of EuF3 and EuF2 found by quantitative XRD (2,5% wt.). At the same time, the data of chemical and X‑ray diffraction phase analysis agree satisfactorily for the LaF3-NaCl-KCl sample. It has been suggested that the EuF3 phase detected by XRD could appear because of the oxidation of europium during the storage of the sample, and, possibly, due to the effect of ionizing radiation on the system at measuring.
It has been established by spectroscopic methods that both valence forms of Europium are present in the bottom part of the sample, and the chemical analysis data (namely, the found content of fluoride ions) indicate the presence of other (except of Europium fluorides) fluorine-containing phases in this part. To identify the anionic forms of Eu3+, we used the dependence of the position of the diffuse reflection bands in the DR spectra change of variousinorganic compounds of trivalent europium form the reduced electronic polarizability of the ligand anions. According to the position of the reflection bands in the spectrum of the studied sample, it was found that the dominant form of Eu(III) in the bottom part is EuOCl∙25EuF3.
Thus, using a combination of various physical and chemical methods, the presence of different valence and anionic forms of Europium in the EuF3-NaCl-KCl sample was shown and the dominant forms of Eu were established in the upper and bottom parts of the studied system.
2D QSAR ANALYSIS OF BLOOD-BRAIN BARRIER PERMEABILITY FOR ORGANIC COMPOUNDS
Authors: Kosinskaya A. P. , Ognichenko L. N. , Sidelnikova T. A. , Burdina Ya. F. , Shyrykalova A. A. , Stepanov G. F. , Grekova A. V. , Gridina I. R. , Lebed E. P. , Kuz’min V. E. 
Published: January 2023

The aim of this work is to analyze the influence of the structure of organic compounds on their ability to penetrate the blood-brain barrier (BBB) using the values of LogPS (logarithm of the product of permeability and surface area of metabolism, which is a measure of the transfer of compounds from the blood to the brain and reflects the degree of penetration of the substance into the brain without relative binding to proteins). The study of the permeability of BBB is necessary both for the development of new drugs for which the CNS is a biointerference, and for the development of effective ways of treating diseases of the brain.
Early Permian Adakites of the Nora–Sukhotino Terrane in the East of the Central Asian Orogenic Belt: Geochronological (U–Pb, LA-ICP-MS) and Geochemical Data
Authors: Smirnov Yu.V. , Khubanov V.B. 
Published: January 2023

Abstract
––We present results of geochemical and geochronological (U–Pb, LA-ICP-MS) studies of plagiogranites of the Mt. Zmeinaya massif in the Nora–Sukhotino terrane. The studied rocks are of calc-alkaline series and peraluminous type. They formed in collision settings at the final stage of evolution of the Nora–Sukhotino terrane. The high Sr/Y ratios and low Y and Yb contents of the plagiogranites indicate that these are adakitic rocks. The trace element composition of the rocks suggests their high-pressure (&gt;15 kbar) genesis through the melting of metabasites. The youngest zircon population from the plagiogranite has a weighted average concordant age of 295 ± 4 Ma, which corresponds to the early Permian. With regard to the zircon morphology, the obtained age can be considered the age of the plagiogranites.
THE EFFECT OF DIGITAL LITERACY SKILLS ON IMPROVING TEACHER CREATIVITY
Authors: Zayas Juan David Martinez , Rofi'ah Nurhayati 
Published: January 2023

The current education requires a new teaching approach based on digital literacy because today’s students experience different needs based on the technological era. To face this reality, teachers must be creative because technology is changing so fast and students’ digital literacy are more advanced than their educators. A good way how to develop teachers’ creativity is by introducing a digital literacy education program for preservice and in-service teachers from different levels. This research paper is conducted by theoretical research method. Data are collected by a theoretical review technique. Also, this research design is based on a descriptive approach. The study is focused on teachers’ creativity development by increasing digital literacy. Papers related to the topic under study were searched on educational journals. The main goal of this paper is to find out how digital literacy skills influence educators’ creativity development. Findings show that the use of technology develops various skills such as problem-solving, productivity, collaborative imagination, curiosity, and other factors that increase creativity. Current researchers also find that technology enhances teachers’, motivation, cooperation, and creation. Overall, children of this age are involved with technology every day, and for them is almost natural to deal with this reality, for this reason, this paper suggests that digital literacy skills must be inculcated in teachers from all levels by different methods to face the reality.
2D Audio-magnetotelluric (Amt) Data Inversion of the Al-jaww Plain Area (Al-ain, United Arab Emirates) for Groundwater Investigations
Authors: Saibi Hakim , Alaran Ahmad , Cherkose Abera Biruk 
Published: January 2023

Abstract
The United Arab Emirates (UAE) lies within the arid climate zone due to its low annual rainfall rates. The country’s freshwater is located primarily in shallow groundwater aquifers. Understanding the depth and extent of such aquifers is an important issue for UAE local governments and environmental agencies to ensure water supply needs are met. The hydrogeological conditions of the UAE are strongly related to its topographic features, which are dominated by a mountain range in neighboring Oman on the eastern margin of the Arabian Platform. Alluvial plains, such as the Al-Jaww Plain (eastern Al-Ain city), are an important potential groundwater source for the Al-Ain region. Al-Jaww Plain is a large, flat area consisting of gravel and sand outwashes from the Al-Hajar Mountains. The main objective of this research is to investigate the study area’s electrical resistivity distribution and locate groundwater aquifers. In this research, the audio-magnetotelluric (AMT) method was applied, with measurements from 10 AMT stations recorded along an 11 km east–west profile in Al-Jaww Plain. The AMT method is a high-resolution, non-seismic geophysical technique that measures variations in the Earth's natural electromagnetic fields to detect subsurface electrical resistivity variations at shallow to intermediate depths. A two-dimensional resistivity inversion model was developed for the AMT data from the east–west profile. This model contains three main geo-electrical layers from the surface to 5 km depth, as follows: (1) a shallow layer with low resistivity (0–15 Ohm.m), representing the groundwater aquifer zone from the ground surface to a 1 km depth, (2) a moderately resistive layer (15–250 Ohm.m) beneath the first layer, and (3) the Hawasina Complex (> 250 Ohm.m) beginning at 2.5 km and extending to 5 km. The results of this study will support local government and water agencies to better manage groundwater resources in Al-Ain in the future.
Evidence for the astrophysics of rotational energy extraction from a supermassive black hole
Authors: Chen Yongyun 
Published: January 2023

Abstract
Theoretical models predict that the power of relativistic jets of active galactic nuclei arises from the spin of the central supermassive black holes. In the Blandford-Znajek mechanism{\cite{blandford77}}, if relativistic jets are powered by a Poynting flux, the jet power of Poynting flux (P$_{B}$) depends on the spin of the supermassive black hole. However, there has been a lack of observational evidence to support this theory.
Here we report an analysis
of archival observations of a sample of supermassive black holes.
We find a significant correlation between the jet power of Poynting flux, as measured through the one-zone leptonic model\cite{Massaro2006, tramacere2009, Tramacere2011, Tramacere2020}, and the spin of supermassive black holes was measured by using X-ray Reflection Spectroscopy\cite{Reynolds2014, Vasudevan2016,Reynolds2019,Reynolds2021}, which is consistent with the theoretical model\cite{blandford77, Ghisellini2006} and numerical simulations{\cite{Koide2002,McKinney2005b, Tanabe2008}}. The jet power of Poynting flux can be explained by BZ mechanism without the need of other jet models. These results provide for the first time observational evidence that the rotational energy extraction from a supermassive black hole enhances the relativistic jets of Poynting flux.
Error Rates of Data Processing Methods in Clinical Research: A Systematic Review and Meta-Analysis
Authors: Garza Maryam Y. , Williams Tremaine , Ounpraseuth Songthip , Hu Zhuopei , Lee Jeannette , Snowden Jessica , Walden Anita C. , Simon Alan E. , Devlin Lori A. , Young Leslie W. , Zozus Meredith N. 
Published: January 2023

Abstract
Background: Over the last 30 years, empirical assessments of data accuracy in clinical research have been reported in the literature. Although there have been articles summarizing results reported in multiple papers, there has been little synthesis of these results. Further, although notable exceptions exist, little evidence has been obtained regarding the relative accuracy of different data processing methods.
Methods: A systematic review of the literature was performed to identify clinical research studies that evaluated the quality of data obtained from data processing methods typically used in clinical research (e.g., medical record abstraction, optical scanning, single-data entry, and double-data entry). A total of 93 papers meeting our inclusion criteria were categorized according to their data processing methods. Quantitative information on data accuracy was abstracted from the articles and pooled. Meta-analysis of single proportions based on an inverse variance method and generalized linear mixed model approach of studies from the literature were used to derive an overall estimate of error rates across data processing methods for comparison.
Results: Review of the literature indicated that the accuracy associated with data processing methods varies widely, with error rates ranging from 2 errors per 10,000 fields to 2,784errors per 10,000 fields. The medical record abstraction process for data acquisition in clinical research was associated with both high and highly variable error rates, with a variability of 3 orders of magnitude in accuracy (70 – 2,784 errors per 10,000 fields). Error rates for data processed with optical methods were comparable to data processed using single-data entry (2 – 358 vs. 4 – 650 per 10,000 fields, respectively). In comparison, double-data entry was associated with the lowest error rates (4 – 33 per 10,000 fields).
Conclusions: Data processing and cleaning methods may explain a significant amount of the variability in data accuracy.
Open-label, Non-controlled Study of Lokivetmab in Atopic Dogs in Brazil
Authors: Campos Millena Leme , Lucas Ronaldo , Moraes-Filho Jonas , de Marco Viviani , Lopes Jessica Dinelli , Beviani Daniela , Pelegrini Carla , Cunha Vitoria Miranda Camarrão 
Published: January 2023

Abstract
Background
The subcutaneous injection of lokivetmab at day zero at the labeled dose range of 2mg/kg was evaluated in 106 dogs recruited from two private clinics in the State of São Paulo, Brazil. The objective of this 30-day open-label, non-controlled study was to evaluate the level of improvement in cases of canine Atopic Dermatitis (cAD) using the Canine atopic dermatitis extent and severity index (CADESI-4), Visual analogue scale (VAS) of pruritus, the incidence of adverse events, and owner’s perception of the treatment response by Global assessment of efficacy (OGATE).
Results
Baseline mean VAS of pruritus was 7.75 (median = 7), decreasing to 3.86 (median = 2) at day 2 ( p < 0.001). CADESI-4 scores decreased from 36.65 at baseline to 16.47 at day 30 (p < 0.001). Reports of treatment responses submitted by owners and evaluation of CADESI-4 after treatment were significantly similar (p < 0.001). Owners rated the response to treatment as good to excellent for 73,5% of the dogs. Adverse events, including vomiting, diarrhea, and/or lethargy, were observed in 18 dogs (17%). All events were transient, and none required treatment.
Conclusions
Based on findings in this study, lokivetmab was determined to provide a rapid and effective response for control of cAD. Lokivetmab was well tolerated with only mild and transient adverse events observed.
Natural Resource Use Conflict and Its Management in Babile Elephant Sanctuary, Eastern Ethiopia
Authors: Tekletsadik Shimelis , Kebede Fanuel , Degefa Sileshi 
Published: January 2023

Abstract
Babile Elephant sanctuary (BES) is located in the semi-arid ecosystemin eastern part of Ethiopia. Natural resource use conflict is one of the major problems of the sanctuary. This study aimed at assesing the root causes of conflicts and their impacts on the sanctuary. Data was collected through satellite imagery,household survey, focus group discussions and key informat interviews. Land use/land cover change analyses were made for a period of three decades (1990-2020). The study indicated a significant changes on the drivers of resource use conflict of the Kebeles (p<0.05). The satellite image analyses revealed forest and grassland have been decreased whereas bare land, settlement, cultivated and bush lands have increased.
The current resource use conflict and change in the land use can be mitigated through boundary re-demarcation of the sanctuary and creation of alternative means of community livelihoods in collaboration with the concerned stakeholders along with law enforcement and community engagements.
Somatic Mutations within Myocilin due to Aging may be a Potential Risk Factor for Glaucoma.
Authors: Sazhnyev Yevgeniy , Venkat Akaash , Zheng Jie 
Published: January 2023

Abstract
Glaucoma is a chronic optic neuropathy that leads to irreversible vision loss. Aging and family history are the two most important risk factors of glaucoma. One of the most studied genes involved with the onset of open angle glaucoma is myocilin (MYOC). About 105 germline mutations within MYOC are known to be associated with glaucoma and result in endoplasmic reticulum (ER) stress that leads to trabecular meshwork (TM) cell death and subsequent intraocular pressure (IOP) elevation. However, only about 4% of the population carry those mutations. An analysis of MYOC somatic cancer-associated mutations revealed a notable overlap with pathogenic glaucoma variants. Because TM cells have the potential to accumulate somatic mutations at a rapid rate due to ultraviolet (UV) light exposure, we propose that an accumulation of somatic mutations within MYOC is an important contributor to the onset of glaucoma.
Osteogenesis Capability of Gelatin-based biomimetic Scaffold containing PRP-loaded Starch Nanoparticles
Authors: Boraei Seyyed Behnam Abdollahi , Nourmohammadi Jhamak , Shokrollahi Saeideh , Seyedjafari Ehsan 
Published: January 2023

Abstract
A new generation of scaffolds capable of acting not only as support for cells but also as a source of biological cues to promote tissue regeneration is currently a hot topic in bone Tissue Engineering (TE) research. The controlled release of the Growth Factors (GFs) from the scaffolds is a suitable strategy to achieve such a goal. Platelet Rich Plasma (PRP) is an autologous source of GFs, providing several bioactive agents known to act on bone regeneration. In this study, citric acid-modified starch nanoparticles loaded with PRP will be included in a gelatin scaffold. Scaffolds were evaluated in vitro with respect to compressive strength, water uptake, and protein release. The size of the pores in the production scaffolds was evaluated to be around 150 microns which is suitable for bone regeneration. The scaffolds were then seeded with human adipose-derived stem cells (hASCs) and cultured in vitro. The osteogenic behavior of the seeded hASCs was evaluated by alkaline phosphatase activity (ALP activity) and calcium assay analysis. The results show the promotion of morphological, mechanical, and biological properties of the scaffolds by adding PRP-loaded nanoparticles. Our results suggest that the PRP-loaded starch nanoparticles enhance the biological and bone regeneration of the gelatin-based scaffolds.
Effect of Rosemary Essential Oil Oral Supplementation on Testes Morphometric Measures, Accessory Genital Glands, and Semen Parameters in the Barki Rams
Authors: Ali Montaser Elsayed , Zainhom Mohammed , Monier Ahmed , Awad Ahmed 
Published: January 2023

Abstract
The present study investigated the effect of the Rosemary essential oil oral Supplementation on the development of the reproductive organs, including morphometric measures, accessory genital gland, and semen quality in Barki rams. Sixty rams were randomly divided into two equal groups; control (G1) and Rosemary essential oil (G2), treated with 2 mg/Kg of body weight per day for 45 days treated group. Ultrasonographic measurements and blood sampling were performed on days 15, 30, and 45 of the treatment, and semen samples were collected twice a week after 15 days for quantitative and qualitative analysis. The results showed a significant increase in the testicular parameter measures and epididymal tail in the Rosemary group than in the control group. However, the seminal vesicle, Cowper's, and prostate glands showed the highest development on day 45 of the treatment. Although there was a significant increase in the ejaculate volume (ml), individual motility (%), and sperm cell concentration (x109/ml) in Rosemary treated group than the control group; there was no significant improvement (P > 0.01) in the alive spermatozoa (%). Furthermore, the treatment showed a positive effect on testosterone levels, testicular measures, epididymal tail, accessory genital gland, individual sperm motility, and viability. The present result revealed that oral supplementation with Rosemary essential oil might improve testicular parameters, accessory genital glands, and semen quality.