bluuebunny/crossref_metadata_2025 huggingface dataset:
Producción científica en el tema de incubación de negocios en universidades: Un análisis bibliométrico
Authors: Stradi Granados Maria Stella
Published: January 2025

El objetivo de esta investigación consistió en estudiar la incubación de negocios en las universidades para identificar las tendencias mundiales en producción científica que propicien la generación de conocimiento en líneas de investigación modernas. Se utilizó un análisis bibliométrico de la base de datos Scopus y el resultado de los parámetros de búsqueda permitió identificar 508 documentos en un periodo de producción científica de 2002 a 2021.

Este estudio identificó las principales temáticas, autores, revistas, producción científica en instituciones y países, así como redes de trabajo, permitiendo así ver la evolución conceptual y detectó posibilidades de realización de futuras investigaciones en campos tales como el emprendimiento universitario, la incubación de negocios de base tecnológica y la promoción de nuevas redes. Este documento es relevante debido a que contribuye a la teorización en el tema de incubación de negocios en universidades.
Isolation and Characterization of Human CXCR4-Positive Pancreatic Cells
Authors: Koblas T. , Zacharovová K. , Berková Z. , Mindlová M. , Girman P. , Dovolilová E. , Karasová L. , Saudek František
Published: January 2025

The existence of an adult PSC that may be used in the treatment of diabetes is still a matter of scientific debate as conclusive evidence of such a stem cell in the adult pancreas has not yet been presented. The main reason why putative PSC has not yet been identified is the lack of specific markers that may be used to isolate and purify them. In order to increase the list of potential PSC markers we have focused on the human pancreatic cells that express cell surface receptor CXCR4, a marker of stem cells derived from different adult tissues. Here we report that CXCR4-positive pancreatic cells express markers of pancreatic endocrine progenitors (neurogenin-3, nestin) and markers of pluripotent stem cells (Oct-4, Nanog, ABCG2, CD133, CD117). Upon in vitro differentiation, these cells form ILCC and produce key islet hormones including insulin. Based on our results, we assume that CXCR4 marks pancreatic endocrine progenitors and in combination with other cell surface markers may be used in the attempt to identify and isolate PSC.
Exercise limitation in chronic kidney disease: An experimental pilot study with leg and arm exercise
Authors: Wallin Helena , Jansson Eva , Said Ragad , Lundberg Sigrid , Zolfaghardidani Pourya , Eriksson Maria J. , Rickenlund Anette , Sundblad Patrik
Published: January 2025

Maximal oxygen uptake (VO2max) in healthy subjects is primarily limited by systemic oxygen delivery. In chronic kidney disease (CKD), VO2max is potentially reduced by both central and peripheral factors. We aimed to investigate the effect on VO2peak of adding arm exercise to leg exercise. Ten individuals with CKD stages 3–5 and 10 healthy controls, matched for age, sex, body size, and physical activity level, were included. Subjects performed two maximal exercise tests, one with legs only (L exercise) and one test where arm exercise was added to leg exercise (LA exercise). The increase in VO2peak, when comparing LA exercise with L exercise, was significantly higher in CKD (0.20 ± 0.18 L/min or 2.31 ± 1.78 mL/(kg·min)) than in controls (0.019 ± 0.12 L/min or 0.26 ± 1.62 mL/(kg·min); p = 0.02 and 0.01, respectively). The decrease in peak leg workload, when comparing L exercise with LA exercise, was larger in controls than in CKD, in absolute terms (p = 0.002) and relative to body weight (p = 0.01). VO2max in individuals with CKD is dependent on the active muscle mass, supporting a peripheral limitation to VO2max in CKD. By contrast, the control group appeared to have a more central limitation to VO2max.
Optimal volume bound and volume growth for Ricci-nonnegative manifolds with positive bi-Ricci curvature
Authors: Zhou Jie , Zhu Jintian
Published: January 2025

In this paper, we prove the optimal volume growth for complete Riemannian manifolds

(

M
n

,
g
)

(M^{n},g)

with nonnegative Ricci curvature everywhere and bi-Ricci curvature bounded from below by

n
−
2

n-2

outside a compact set when the dimension is less than eight.
This answers a question proposed by Antonelli–Xu in dimensions six and seven.
As a by-product, we also prove an analogy of Gromov’s volume bound conjecture under the condition of positive bi-Ricci curvature.
XUV yield optimization of two-color high-order harmonic generation in gases
Authors: Raab Ann-Kathrin , Redon Melvin , Roscam Abbing Sylvianne , Fang Yuman , Guo Chen , Smorenburg Peter , Mauritsson Johan , Viotti Anne-Lise , L’Huillier Anne , Arnold Cord L.
Published: January 2025

We perform an experimental two-color high-order harmonic generation study in argon with the fundamental of an ytterbium ultrashort pulse laser and its second harmonic. The intensity of the second harmonic and its phase relative to the fundamental are varied while keeping the total intensity constant. We extract the optimum values for the relative phase and ratio of the two colors which lead to a maximum yield enhancement for each harmonic order in the extreme ultraviolet spectrum. Within the three-step model, the yield maximum can be associated with a flat electron return time versus return energy distribution. An analysis of different distributions allows to predict the required relative two-color phase and ratio for a given harmonic order, total laser intensity, fundamental wavelength, and ionization potential.
Agricultural Agents: Utilizing Matrix Calibrations for the Accurate Quantification of Contaminants in Cannabis Products
Authors: Glaros Jini L. , Bergel Wyatt T. , Perkins Derek B.
Published: January 2025

Cannabis is an extremely complex matrix that has chemical properties that can make the quantitation of various analytes within the product difficult. As such, laboratories must develop methods that will account for the matrix effect and interferences that naturally occur in everyday samples. Although most analyses can be impacted by matrix, agricultural agent testing is impacted the most. If a laboratory wants to accurately identify and quantify compounds of interest, matrix calibrations, the use of internal standards, and robust method development are essential. This paper will provide data and evidence regarding the impact that a matrix can have on agricultural agent results and why the lack of matrix calibrations can be detrimental to the accurate identification and quantitation of the analytes. Additionally, tools for identifying matrix interferences and how to combat these issues will be discussed in further detail. Cannabis laboratories must focus on producing data that are accurate, reproducible, and legally defensible to help ensure consumer safety. Consumption, whether through inhalation or ingestion, of toxic agricultural agent residues can be extremely dangerous to the health of consumers and in the United States, third party laboratories have been assigned the responsibility of ensuring that all products on the market are safe. As such, this research and its supporting evidence play a critical role in the cannabis industry and the laboratories ability to protect the consumer.
Evaluation of Open-Graded Friction Course Mixes with Agro-Waste–Derived Natural Fibers
Authors: Sharma Ashish , Choudhary Rajan , Kumar Ankush , Biswapriya Dash Saswat
Published: January 2025

As an agrarian economy, India produces the second-largest amount of agricultural waste globally. The practices of indiscriminately disposing of this waste in open lands or burning it in agricultural fields give rise to significant environmental and health concerns. With an increasing need for sustainable road construction materials and practices, engineers are continuously looking for the use of agricultural and plantation-based resources, particularly natural fibers. In order to address problems like binder draindown and raveling associated with high binder content and low fine content, this study focuses on the open-graded friction course (OGFC), which incorporates fibers. Under the investigation on the potential applications of natural fibers, including banana fiber (BNF), sisal fiber (SIF), pineapple fiber (PNF), sunn hemp fiber (SHF), and cellulose fiber (CLF), the study assesses various mix design parameters across 12 combinations, including bulk density, air voids, stone-on-stone contact, binder draindown, and abrasion loss (aged and unaged) at different binder contents, fiber lengths, and dosages. Results indicate an optimum binder content of 6.0 % for all fiber-reinforced OGFC mixes. Grey relational analysis and indirect tensile strength (ITS) tests further validate the improved performance of these mixes, showcasing reduced draindown, and abrasion loss, and enhanced ITS with the incorporation of natural fibers. The comprehensive evaluation of mix design properties ranks BNF as the top-performing, followed by PNF, SIF, and SHF, as indicated by the grey relational grade. This research emphasizes the potential of using agricultural waste for sustainable infrastructure development and promoting eco-friendly practices in the construction industry.
Effects of High-Polymer Grouting for Emergency Treatment of Landslides
Authors: Zhang Zhichao , Tang Xuefeng , Liu Kan , Ye Longzhen , He Xiang
Published: January 2025

This study introduces an innovative approach to emergency treatment of landslides using high-polymer slurry characterized by its rapid solidification, requisite strength, and consistent properties. Model experiments and numerical simulations were conducted to assess the effectiveness of high-polymer, high-pressure grouting for landslide mitigation. The findings demonstrate a substantial improvement in both slope displacement and bearing capacity following high-polymer grouting. A semispindle-shaped solidified mass, approximately 50 cm in axis length, formed between the sliding bed and mass after injecting 300 mL of high-polymer slurry at a pressure of 15 MPa. The cohesive force of this structure was measured at 46.8 kPa, with an internal friction angle of 39.4 degrees, resembling an embedded antisliding key positioned near the sliding surface. This structure effectively enhanced slope-bearing capacity and reduced slope displacement. The measured bearing capacity of the slope model increased from 26 kPa before reinforcement to over 48 kPa, marking a significant enhancement. The simulated results closely align with measured data, with the simulated landslide morphology corresponding well to observed outcomes. These findings validate the feasibility and effectiveness of the proposed high-polymer grouting technique in the emergency treatment of landslides.
Measuring Work of Breathing in an Infant Model: Comparison of Static and Dynamic Test Methods
Authors: Leshner Michael D.
Published: January 2025

When an infant’s face becomes engaged with soft bedding materials, a suffocation hazard may be present that is associated with increased work of breathing (WOB). When resistive materials impede airflow, an infant must work harder to breathe and maintain homeostasis. Airway stressors within the infant sleep environment are felt to be risk factors for sudden unexpected infant death (SUID). To quantify the WOB, experiments were performed using a mechanical breathing model for dynamic measurements and compared with a static test method. The model was configured to measure the dynamic pressure and volume of the lungs as they changed during the breathing cycle. Pressure and volume data were used to calculate the WOB per cycle for a range of 12 restrictive bedding materials and 3 types of foam. In addition, static airflow resistance measurements were made using the same materials. It was found that there is a useful correlation between static airflow measurements and dynamic measurements of WOB. The measurement methods and apparatus are described herein.
ОБ АГЕНТНОМ РЕАЛИЗМЕ И ОНТОЛОГИИ КВАНТОВОЙ МЕХАНИКИ
Authors: ПРИСЬ И.Е.
Published: January 2025

К. Барад предлагает «агентный реализм» в качестве единого подхода к природным и социальным явлениям. Позиция вдохновлена квантовой механикой, и в частности явлением квантового спутывания. Также Барад видит сходства своего подхода с подходом Н. Бора и реляционной квантовой механикой К. Ровелли. На наш взгляд, агентный реализм - разновидность онтологического корреляционизма, а не реализм. Аналогия с подходами Бора и Ровелли лишь частичная. Агентный реализм - неверная интерпретация квантовой механики. Он непригоден и для социального теоретизирования, для которого принятие во внимание чувствительности онтологии к контексту фундаментально. В качестве альтернативы мы предлагаем контекстуальный квантовый реализм (ККР), отвергающий субстанциальные дуализмы (как это делает и Барад), но в то же время принимающий категориальный дуализм реального и идеального. Наш подход также позволяет лучше понять позицию Бора и скорректировать реляционную квантовую механику Ровелли.

К. Barad proposes agential realism as a unified approach to natural and social phenomena. The position is inspired by quantum mechanics and, in particular, the phenomenon of quantum entanglement. Barad also sees similarities between her approach, N. Bohr’s view and C. Rovelli’s relational quantum mechanics. In our opinion, agential realism is a kind of ontological correlationism, and not realism. The analogy with the approaches of Bohr and Rovelli is only partial. Agential realism is a wrong interpretation of quantum mechanics. It is also unsuitable for social theorizing, for which considering the context sensitivity of ontology is fundamental. As an alternative, we propose contextual quantum realism (CQR), which rejects substance dualisms (as Barad does) but at the same time accepts the categorical dualism of the real and the ideal. Our approach also allows for a better understanding of Bohr’s position and correcting Rovelli’s relational quantum mechanics.
ТРАНСФОРМАЦИЯ ГЕРМЕНЕВТИКИ Х.-Г. ГАДАМЕРА В КОНТЕКСТЕ ПРОБЛЕМАТИКИ ГЕОЛОГИЧЕСКОГО ПОЗНАНИЯ
Authors: МИРОНОВ В.А.
Published: January 2025

Целью данной работы является обоснование применимости герменевтических идей Х.-Г. Гадамера к философско-методологическому анализу геологического познания. Приводятся аргументы в пользу того, что познавательные практики в геологии в большей степени соотносятся с герменевтическими познавательными процедурами гуманитарной истории, чем с познавательными процедурами экспериментальной физики, ориентированной на поиск и формулирование общих законов. При этом производится адаптация герменевтических идей Гадамера к контексту геологического познания.

The work is aimed at substantiating the applicability of H.-G. Gadamer’s hermeneutical ideas to the philosophical and methodological analysis of geological knowledge. Arguments are given in favor of the fact that cognitive practices in geology are more closely related to the hermeneutic cognitive procedures of human history than to the cognitive procedures of experimental physics, focused on the search and formulation of general laws. At the same time, Gadamer’s hermeneutical ideas are adapted to the context of geological knowledge.
People and horses in the Late Roman Period - Late Migration Period (3rd-7th centuries) in Lithuania: origins and social context
Authors: Kurila Laurynas , Piličiauskienė Giedrė
Published: January 2025

This paper presents a study analysing the mobility and possible immigration of humans and horses in Lithuania in the Late Roman Period – Migration Period (3rd–7th centuries AD), based on 87Sr/86Sr stable isotopes analysis. During the study, we carried out strontium analysis of 40 human teeth from 11 burial sites and 13 horses from six burial sites. In addition, to reconstruct bioavailable 87Sr/86Sr ranges, we analysed 87Sr/86Sr of 41 animals from 15 prehistoric and historic sites. A human sample was collected to evaluate the presumed immigration directions and mobility of both sexes, different social groups, and in different regions of Lithuania. Stable isotope analysis, radiocarbon dating, biometric measurements, and other studies have provided new insights into the origins, mobility, and other aspects of lifestyle and horse breeding in the mid-1st millennium AD, and have also drawn prospects for future research on these topics.
The earliest development of the Vilnius Franciscan Church and monastery area
Authors: Kaplūnaitė Irma , Jonaitis Rytis , Indrulėnaitė-Šimanauskienė Vida , Veževičienė Vitalija
Published: January 2025

When the German Town (a settlement of Catholic merchants and craftsmen) began to emerge in the western part of the present Old Town of Vilnius in the last decades of the 14th century, the Catholic community relocated to this area. St Nicholas Church was built here before 1387 and it was the first Catholic church in the Old Town, around which the German City was established. However, in addition to this house of worship, there was another in the Catholic part of the city – the Franciscan Church of the Assumption of the Blessed Virgin Maria and a monastery.This monastery is considered to be the oldest one in Vilnius, however, the exact time of its construction, as well as that of the church, has not been determined. Due to the lack of historical sources and precise dates, the construction has been dated by different researchers from the first half of the 14th century to the beginning of the 15th century, i.e., with an error of 100 years. Archaeological investigations in the vicinity of the church and the monastery, which have been carried out since 1993, have provided some new hypotheses concerning the chronology and the earliest nature of human activity in this territory. The most recent excavations took place here in 2023, providing new insights into the development of the area through the discovery of objects and interdisciplinary research (radiocarbon dating, analysis of archaeobotanical remains, architectural research). This paper discusses the chronology and nature of the earliest development of the Franciscan church and monastery area, based on the available historical sources, archaeological and architectural research, including the results of most recent investigations.
Exploration technology of archaeological objects by the method of drilling
Authors: Vietrov Victor
Published: January 2025

We represent the results of archaeological works by using the drilling method. Such works were carried out in the Medzhybizh and Bar castles, as well as in Palaeolithic field explorations. Our drilling research in castles focused on the inspection of courtyards and fortification of castles. Drilling made it possible to see the thickness of cultural layers up to 8 meters of thick. Based on the obtained data, reconstructions of the daytime surface of castle courtyards and the sequence of changes in their relief were carried out. Drilling during the search for Palaeolithic sites was carried out on turfed areas and different soil types. The high efficiency of exploratory drilling operations has been determined. The equipment was adapted, and the optimal drilling technique worked out during archaeological explorations.
Моделювання механізмів транспорту носіїв заряду в HgCdTe та InSb фотодіодах на ділянку спектра 3–5 мкм
Authors: Tetyorkin V. , Tsybrii Z. , Slipokurov V. , Yevmenova A. , Andrieieva K. , Kosulya O.
Published: January 2025

Важливою проблемою для HgCdTe та InSb фотодiодiв є надлишковий темновий струм, який домiнує при робочих напругах зворотного змiщення i перевищує генерацiйно-рекомбiнацiйний струм в областi просторового заряду (ОПЗ). Як правило, надлишковий струм має об’ємну та поверхневу складову i зумовлює низькочастотний шум 1/f -типу, який впливає на амперватну чутливiсть та виявлювальну здатнiсть фотодiодiв. У бiльшостi виконаних дослiджень вiдзначається тунельна природа надлишкового струму i зв’язок з технологiєю виготовлення вихiдних матерiалiв та фотодiодiв. З використанням теоретичних моделей виконано розрахунки темнового струму, якi спiвставленi з експериментальними результатами, отриманими iз дослiджень фотодiодiв на основi епiтаксiйних плiвок p-Hg1−xCdxTe (x ∼ 0,3) та монокристалiв n-InSb. Зроблено висновки про те, що структура чутливої областi у фотодiодах, виготовлених методами iонної iмплантацiї та дифузiї, бiльш складна, нiж у iснуючих моделях, тому останнi можна використати як перше наближення для якiсного i кiлькiсного пояснення експериментальних результатiв.
Mplus and the R mirt Package: A Comparison of Model Parameter Estimation for Generalized Partial Credit Model (GPCM)
Authors: Al Fariz Arif Budiman
Published: January 2025

This article aims to carry out an empirical demonstration to calibrate data using the generalized partial credit model (GPCM) and compare the results of GPCM analysis on paid software, namely Mplus, and open-source software, namely R Package Mirt. The data used in this study used secondary data in the form of item scores from the future orientation scale or Skala orientasi masa depan (S-OMD) with a total of 326 participants using a Likert scale with 4 response options. The results of this study show that GPCM is fit for OMD scale data. Comparison of analysis results using Mplus and R Package mirt shows the same output, such as discrimination parameters and item difficulty levels. The resulting factor score correlation also has a perfect correlation or one. In conclusion, open-source software is capable of having the same computing performance as paid software, and even has several additional features that are not found in paid software.
Improving Pediatric Emergency Department Access to Discharge Prescriptions
Authors: Ayers Claci , Canady Heather , Humphreys Elizabeth , Thornton Clark , Johnson David P. , Estrada Cristina , Barron Frazier S.
Published: January 2025

BACKGROUND AND OBJECTIVES

One-third of prescriptions prescribed by a pediatric emergency department (PED) are not filled by patients. Fill rates improve with an onsite outpatient pharmacy (OOP). We aimed to increase the percent of PED discharge prescriptions sent to the OOP during open hours from 8.9% to 70% by June 2022.

METHODS

A team of PED providers and pharmacists was formed in early July 2021 to develop a key driver diagram. Retrospective baseline data were obtained from January 2019 to June 2021. Weekly data were then followed prospectively. Statistical process control charts were used to analyze data. Key interventions included an education campaign, electronic medical record modifications to the preferred pharmacy, and implementing on-shift project champions. The primary outcome was the percentage of prescriptions sent to the OOP from the PED during open pharmacy hours. The process measure of unfilled prescriptions at the OOP was also assessed.

RESULTS

Baseline OOP utilization was 8.9%. Interventions, including modifying the preferred pharmacy settings, fellow champions, and provider feedback, led to 3 centerline shifts with a peak mean of 70.9% that was sustained for 9 months before decreasing slightly to 60%. As prescriptions being sent to the OOP pharmacy increased, the percent of unfilled prescriptions at the OOP was maintained at a rate of 15.8%.

CONCLUSION

Quality improvement methodology was associated with a sustained increase in prescriptions sent to the OOP and a maintained rate of unfilled prescriptions, which supported the expansion of OOP hours of operation.
Characterizing Vitamin K Refusal in Term Hospital-Born Infants in Minnesota, 2015–2019
Authors: George Caroline L. S. , Sidebottom Abbey C. , Evans Michael D. , Peterson Loralie J. , Prekker Frances L. , Schulte Anna K. , Hennum Jesse L. , Brumbaugh Jane E.
Published: January 2025

BACKGROUND AND OBJECTIVES

Some Minnesota clinicians perceive that the incidence of prophylactic vitamin K refusal is increasing, yet the actual incidence and which populations are most likely to refuse is unknown. Our objective is to identify the incidence of vitamin K refusal and to characterize the maternal-newborn dyads with increased refusal rates.

METHODS

This retrospective multi-institution study analyzed vitamin K refusal in newborns born from 2015 to 2019. Maternal-newborn dyad delivery and community characteristics (language, religion, population size) were collected and analyzed by univariable and multivariable logistic regression.

RESULTS

Among 102 451 term infants, 1.3% did not receive intramuscular vitamin K. Refusal increased from 0.9% in 2015 to 1.6% by 2019 (P < .0001). In multivariable analysis, factors associated with increased likelihood of refusal included female sex (odds ratio [OR] 1.22, 95% CI 1.09–1.36), exclusive human milk feeding at hospital discharge (OR 3.46, 95% CI 2.87–4.17), parity greater than 0 (OR ranging from 1.32 [95% CI 1.13–1.54] for parity of 1, to 3.70 [95% CI 2.80–4.90] for parity of 4), having a midwife at delivery (OR 1.70, 95% CI 1.45–2.01), public insurance (OR 1.84, 95% CI 1.60–2.12), and Russian language (OR 4.92, 95% CI 2.90–8.35). Some religious identities had higher refusal rates (ie, Pentecostal 7.0%, Baptist 3.3%).

CONCLUSION

In a cohort of Minnesota hospital-born infants, the incidence of vitamin K refusal increased between 2015 and 2019. We identified large populations (eg, public insurance, exclusive human milk feeding) and smaller discrete communities (eg, Russian, Pentecostal) with opportunities for increasing prophylactic vitamin K acceptance through targeted community conversations.
El Bazar Veracruz: inmigrantes judíos, comercio transatlántico y cambio urbano en Bogotá en el tránsito del siglo XIX al XX
Authors: Martínez Ruiz Enrique
Published: January 2025

Este artículo es un estudio del Bazar Veracruz, establecido en Bogotá (Colombia) en 1899, por el industrial y comerciante judío alemán Leo Siegfried Kopp Koppel, que fue el primer almacén por departamentos de la capital y ocupó un lugar destacado en el proceso de modernización capitalista de la ciudad. Además de revisar la biografía de Kopp, el artículo subraya el importante papel de los inmigrantes (en este caso los judíos) en la transformación urbana de la capital colombiana en el tránsito entre los siglos XIX al XX, al tiempo que destaca la singularidad del Bazar Veracruz dentro de la historia del comercio y de la arquitectura de la ciudad. Muestra, además, como las actividades comerciales de Leo Siegfried lo llevaron a convertirse en un agente destacado del proceso de la transformación de la vida urbana que experimentaron los bogotanos en ese momento.
La reivindicación de Alejandro Agudelo Tafur y sus Lecciones de música: a propósito de una infundada crítica
Authors: Ramírez Jaramillo John Fredy
Published: January 2025

En 1858 Alejandro Agudelo publicó sus conocidas Lecciones de música. A pesar de su aporte formativo, Gabriel Angulo y Andrés Pardo Tovar impugnaron en su momento su validez y los méritos académicos de su autor. Este escrito busca rehabilitar la imagen intelectual de Agudelo y la calidad argumentativa de sus Lecciones, para esto discute las circunstancias en las que se editaron los primeros tratados musicales producidos en Colombia, ofrece una breve reseña de la trayectoria de Agudelo y contextualiza sus fuentes bibliográficas. Por último, argumenta por qué las Lecciones constituyen el primer tratado publicado en Colombia con un enfoque moderno sobre la teoría y la historia de la música.
Tracing the lines within Giovanni Bottesini’s Operatic Paraphrases (1821-89)
Authors: Ramírez Castilla Jaime
Published: January 2025

This paper provides a formal analysis of Giovanni Bottesini’s most important operatic paraphrases for double bass and piano within a larger context and explore their connection with the original operas. The absence of this connection is one of the main problems found whenperforming these works. Starting with a brief exploration of the plot of the operas, the analysis here presented traces in detail the melodic transformations that Bottesini implemented in each of his operatic renditions. As conclusion, it offers a set of suggestions that may helpthe performer to strengthen the connections between the instrumental virtuoso repertoire and the emotional potential of the operatic realm.
Prevalencia de parásitos gastrointestinales de ganado bovino pre-faenado en el municipio de Quevedo, Ecuador
Authors: Espinoza M.A. , Batista A.R , Mariscal S.P , Rodriguez V.F.
Published: January 2025

Este estudio tuvo como objetivo evaluar la prevalencia de parásitos gastrointestinales en bovinos pre-faenados en el camal de Quevedo, Ecuador. Se analizaron 240 muestras fecales recolectadas entre agosto de 2022 y julio de 2023. Se consideraron como variables la edad, el sexo, el lugar de procedencia del bovino y la época del año para identificar posibles factores de riesgo asociados a la presencia de parásitos. La identificación de las noxas se realizó mediante la técnica de flotación, lo que reveló la presencia de Strongyloides y Paramphistomum. El análisis estadístico incluyó el uso del Odds Ratio para determinar la exposición a factores de riesgo y la prueba de Chi cuadrado evaluó la asociación entre variables, además de la prevalencia. La infección estuvo significativamente asociada con el sexo macho y la procedencia de los animales de la zona de Pucayacu, por la alta humedad que caracteriza a la región. La prevalencia de parásitos fue superior al 50%, lo que resalta la importancia de efectuar medidas de control en estas áreas de mayor riesgo. El procesamiento de los datos se llevó a cabo con el software estadístico InfoStat.
Evaluating the Andean blueberry (Vaccinium meridionale Swartz) powder in the preparation of ice cream: Improving the antioxidant capacity and the total phenolic content
Authors: Vivas-Álzate Laura C. , Ciro-Velásquez Héctor José , Sepúlveda-Valencia José Uriel , Pérez Monterroza Ezequiel José
Published: January 2025

This study evaluated the content of total phenolic compounds, antioxidant capacity, and functional properties of an ice cream formulated from Andean blueberry (Vaccinium meridionale Swartz) powder. The antioxidant capacity of pulp and powder from Andean blueberry was performed by using ABTS*+ and DPPH methods. The blueberry powder was obtained by convection drying, and the rheological and thermal properties of the ice cream were determined by rotational rheology and differential scanning calorimetry (DSC), respectively. The stability of ice cream was evaluated at -15 °C during storage for 30 days, measuring color, texture, antioxidant capacity, and phenolic compounds. The results showed a moisture content of 77.64% (w.b), 13.59 °Brix, pH of 3.0, and titratable acidity of 1.35% for the Andean blueberry pulp. The color parameters L*(10.2), a*(3.5), and b* (7.4) indicated the typical dark purple color of this fruit. Andean blueberry powder shows a moisture content of 5.20% (w.b), solubility of 58.24% in water, and color parameters’ values of L*(16.0), a*(16.9) and b*(8.1), with 1.43 mg GAE g-1 of total phenol, while, for the pulp, it was 4.31 GAE g-1. The antioxidant capacity ranged between 200 and 161 μmol TEs g-1 dry mass for pulp and from 56 to 49 μmol TEs g-1 dry mass for powder. Adding powder from Andean blueberry in the ice cream decreases overrun and delays the melting time. Finally, the ice cream showed good stability during storage time, keeping the color, and texture properties such as hardness, total phenolic compounds, and antioxidant capacity.
Interference of Conyza sumatrensis on grain yield of soybean cultivars
Authors: Lorenzetti Juliano Bortoluzzi , Albrecht Alfredo Junior Paiola , Albrecht Leandro Paiola , Danilussi Maikon Tiago Yamada , Barroso Atrhur Arrobas Martins , Bauer Felipe Eduardo , Silva André Felipe Moreira , Marchi Caroline Santana
Published: January 2025

Sumatran fleabane (Conyza sumatrensis) weed can be found in several different agricultural environments and impacts different crops, such as soybean and maize. This weed may have a substantial impact on soybean yield. The aim was to evaluate the interference of C. sumatrensis on the grain yield of soybean cultivars. Soybean cultivars were used with late or early maturity, under 0, 1, 2, 3, 4, 6, 8, and 10 plants m-2 of C. sumatrensis. The four trials, composed of the two cultivars in each of the growing seasons, were analyzed separately. Because differences were found to be significant using the F-test in the comparison between trials (P≤0.05). The yield was subjected to analysis of variance and F-test. A nonlinear, rectangular hyperbolic regression model was fitted. For the early maturity cultivar, infestation levels of 17.1 and 17 of plants m-2 in the 2016–2018 and 2017–2018 growing seasons, respectively, were required to cause a 50% yield loss. For late-maturity cultivars, the values were 6.3 and 7.0 in the 2016–2017 and 2017–2018 growing seasons, respectively. The yield reduction observed for the late-maturity cultivar was 12.54 and 13.72% per plant of C. sumatrensis, in the 2016–2017 and 2017–2018 growing seasons, respectively. The early maturity cultivar showed a reduction of 9.35 and 10.77% per plant, in the 2016-2017 and 2017–2018 growing seasons, respectively. Conyza sumatrensis that cannot be tolerated in soybean, because a single plant per m2 has great potential for reducing yield, from 9.35 to 13.72%.
Impact of nutrient omission technique on the formation of a simple hybrid of corn (Zea mays L.)
Authors: Vecilla-Nicola Alberto , Carrillo-Zenteno Manuel , Durango Cabanilla Wuellins , Hasang-Morán Edwin , Rivadeneira-Moreira Betty , García-Orellana Yelitza
Published: January 2025

Due to the scarcity of information in Ecuador on the effect of nutrient omission in the fertilization of parents for the formation of a new maize hybrid, this research aimed to evaluate the impact of nutrient omission on the formation of a maize hybrid and its seed yield. The study was carried out at the Estación Experimental Tropical Pichilingue (EETP) del Instituto Nacional de Investigaciones Agropecuarias (INIAP), Los Ríos province, Ecuador. Six omission treatments were established -N, -P, -K, -Mg, -S, -B, complete fertilization (N, P, K, Mg, S, B), a treatment based on the application of a farmer and control. A randomized complete block design was used and the averages were differentiated using Tukey’s test. The variables evaluated were: plant height (m), ear height (m), days to flowering, cob length (cm), cob diameter (mm), 100 seed weight (g), percentage of rotten ears, stem diameter (mm), stem and root lodging, chlorophyll levels, yield, partial productivity factor, agronomic efficiency and nutrient harvest index. The results obtained showed that the highest yield was obtained with the omission of the B (2,093 kg ha-1) fertilization plan causing a decrease of up to 42.02% in the partial productivity factor (PPF) and 425.14% of agronomic efficiency (AE) of the studied elements. Since the nutritional priorities of the parents of the corn hybrid had the sequence Mg>N>K=P>S>>B.
El patrimonio conservero del barrio Puerto de Mar del Plata. Problemas y potencialidades desde una valoración socio-productiva y tipológica
Authors: Fernández Olivera Mariana , Sánchez Lorena Marina
Published: January 2025

El tratamiento del patrimonio industrial portuario constituye una problemática que emerge en las últimas décadas del siglo XX a partir de las reestructuraciones producidas en los puertos y las asociadas transformaciones de sus entornos. En este sentido, el barrio Puerto de la ciudad de Mar del Plata —Argentina— resulta significativo. En particular interesa lo acontecido con el desarrollo de la industria de la conserva de pescado, en apogeo entre los años 1930 y 1960, ya que potenció un singular despliegue fabril que todavía pervive en diferentes escalas y estados. Esta herencia es la que se valora, desde los procesos socio-productivos y su condición tipológica asociada, con el fin de analizar problemas y potencialidades que permitan encauzar acciones apropiadas para su preservación. Para ello se trabaja desde un enfoque cualitativo, mediante archivos escritos, planimétricos y fotográficos, junto con relevamientos in situ y testimonios de entrevistas a actores clave.
De la informalidad a la formalidad urbana en condominios de interés social del GAM: adaptaciones, desafíos y lecciones para la política de vivienda
Authors: Hidalgo Cortés Paulo César , Pedrotti Bruno Carolina Inés
Published: January 2025

En el Gran Área Metropolitana (GAM) de Costa Rica, la producción de condominios de interés social financiados por el sistema de subsidios estatales de vivienda, se ha convertido en la alternativa de solución habitacional, desde la política pública, para personas en condiciones de pobreza. El desarrollo de estas figuras —jurídicas, y espaciales— ha implicado un gran cambio de vida para aquellos que históricamente han tenido que afrontar la informalidad urbana y sobrevivir en asentamientos en precario. Este cambio inicia con un proceso de ruptura del modo de vida anterior, para así incorporarse y luego “adaptarse” a otro modo, pensado desde la formalidad, que no siempre resulta apropiado para los residentes; es decir, no necesariamente representa un cambio virtuoso, al menos en algunos aspectos. Esto da pie al surgimiento de distintos tipos de conflictos, ajustes y/o construcción de consensos por parte de los residentes en el nuevo entorno, que incluso pueden derivar en procesos de retorno a la informalidad en un ambiente de origen formal. El estudio de estas experiencias genera aprendizajes para la política de vivienda. Este trabajo identifica aquellos aspectos propuestos por la formalidad en los condominios que han causado conflictos vecinales, discute esos aprendizajes, y analiza cómo podrían rescatarse a modo de lecciones.
Redefining the personality profiles of early-stage solopreneurs: A cross-sector study
Authors: Hagenauer Wolfgang , Zipko Harald T.
Published: January 2025

This study explores the diversity in the personality profiles of solopreneurs in high- and non-high-tech sectors during the initial business phase, driven by the need to determine whether sector-specific personality traits are crucial for entrepreneurial success. Utilizing the Big Five personality traits (BFPT), we analyze data on 4,470 solopreneurs from the IAB/ZEW Start-up Panel (2018 and 2019 waves). This study incorporates comprehensive Big Five personality, exploratory factor, cluster, and heatmap analyses. These methods reveal significant differences between solopreneurs and the general population, particularly regarding openness, conscientiousness, extraversion, agreeableness, and neuroticism. The analysis identifies three main industry sectors that reflect the range of entrepreneurial approaches. Despite sectoral diversity, Big Five profiles of entrepreneurs are homogenous, challenging the assumption that different sectors require distinct personality profiles. The findings underscore the importance of self-awareness and accurate self-perception in fostering innovation and making prudent decisions during the early stages of entrepreneurship.
Kwestia spożywania pokarmów ofiarowanych bożkom w świetle Pierwszego Listu do Koryntian
Authors: Rosik Mariusz
Published: January 2025

Chrześcijanie należący do pierwotnej gminy w Koryncie zmagali się z problemem moralnym: czy wolno im spożywać pokarmy, które wcześniej były złożone w ofierze bóstwom pogańskim, czy też nie? Kwestia ta była istotna z punktu widzenia rodzinnego i społecznego. Odmowa uczestniczenia w takich posiłkach mogła oznaczać zerwanie więzów rodzinnych i społecznych. Paweł starał się dać odpowiedź na ten dylemat w dwóch fragmentach Pierwszego Listu do Koryntian (1 Kor 8, 1–13; 10, 18–28). Analizując jego treść, autor artykułu dochodzi do wniosku, że jest ona niezwykle ważna, ale z teologicznego punktu widzenia – niepełna.
Duchowy testament Apostoła Narodów (Dz 20, 17–38; 2 Tm 4, 1–8)
Authors: Witkowski Stanisław
Published: January 2025

Artykuł składa się z dwóch części. Zarówno pierwsza (Dz 20, 17–38), jak i druga (2 Tm 4, 1–5) traktują o apostole Pawle i są ściśle ze sobą powiązane. Z punktu widzenia literackiego wspomniane perykopy z Dziejów Apostolskich oraz z Drugiego Listu do Tymoteusza przyjmują wartość testamentu, mimo że w przypadku Dziejów mamy do czynienia faktycznie z mową pożegnalną. Jednak jest ona ostatnim słowem skierowanym do starszych z Efezu, dlatego można ją uznać za testament. Zaprezentowana w tych tekstach postać Pawła, chociaż w niektórych fragmentach odbiega od historii, to jednak spełnia swoją funkcję zamierzoną przez autorów. Stanowi jasny punkt odniesienia dla Kościoła po-apostolskiego w czasach zmagań o prawdę i moralną postawę odpowiedzialnych za wspólnotę eklezjalną.
Assessing the Viability of Religious Education in Shaping Moral Behavior: The Context of Lesotho
Authors: Mokotso Rasebate
Published: January 2025

This research examines whether religious studies as a school subject effectively cultivate virtues and values as mandated by the curriculum, which reflects national educational goals. The study uses qualitative content analysis to explore the key educational documents, such as the syllabus and summative assessment question papers from both national and school-based evaluations. While Kohlberg’s moral development framework emphasizes reasoning and critical thinking, this research found significant challenges in the religious studies syllabus and assessments including misalignment between the syllabus and curriculum, insufficient focus on values in assessments, and poorly structured questions on values and virtues. The study recommends addressing these issues by bridging the educational disconnect, fostering reflective citizenship, and designing more holistic assessments.
Transcending Boundaries of Rationality and Spirituality: Ibn ‘Arabi’s Holistic Vision in Islamic Legal Interpretation
Authors: Junaidi Ahmad , Waeno Muhammadaree , Amal M. Khusna
Published: January 2025

The higher objectives of the Sharia provide a legal framework within Islamic law to guide independent reasoning in interpreting legal issues based on rational principles. However, knowledge can also be obtained through unveiling. Ibn ‘Arabi argued that intellectual activities without spiritual experience are like spiritual perceptions without intellectual support. His analysis involved a systematic and rigorous approach to understanding and interpreting Islamic law through philosophical, linguistic, and historical contextualization. Ibn ‘Arabi relied on inner knowledge when examining legal issues and performed a type of spiritual ijtihād, but he did not disregard the role of traditional scholarship in Islamic jurisprudence. This balanced approach highlights the integration of rational and spiritual dimensions in legal reasoning, emphasizing the importance of both intellectual and spiritual insights in the interpretation of Islamic law. By combining these elements, Ibn ‘Arabi’s methodology offers a comprehensive understanding of legal issues, ensuring that interpretations are both deeply rooted in traditional scholarship and enriched by personal spiritual experiences. This dual approach underscores the dynamic and multifaceted nature of Islamic jurisprudence, where rational analysis and spiritual insight work together to achieve a holistic understanding of the law.
Assessing University Students’ Motivation to Choose Distance Learning and the Challenges of Distance Learning
Authors: Karlsdóttir Verena
Published: January 2025

Distance education has gained magnitude post-COVID-19, requiring an understanding of learners’ motivations. This study at the University of Akureyri used a mixed- methods approach to identify three key factors: flexibility, educational growth, efficiency. While gender, age, residence, and education level showed no significant impact, having children and employment influenced perceptions. Thematic analysis revealed insights into student prefe- rences, challenges, and recommendations for improving distance learning.
The first experience in normothermic ex vivo kidney perfusion (case report)
Authors: Shabunin A. V. , Minina M. G. , Drozdov P. A. , Sevostyanov V. M. , Grudinin N. V. , Bogdanov V. K. , Bankeev D. A. , Tenchurina E. A.
Published: January 2025

Objective: to assess if normothermic ex vivo machine perfusion (NMP) of a kidney from an expanded criteria donor (ECD) is feasible and safe.

Materials and methods. NMP of the right kidney from an ECD was performed on a device developed at Botkin Hospital. A solution based on donor’s blood with the addition of Ringer’s lactate solution and human albumin was used for perfusion. The temperature in the circuit was maintained at 37 °C. Perfusion lasted for 203 minutes, after which the renal resistive index was almost halved from 0.33 to 0.16. 120 ml of urine was obtained.

Results. The right kidney was successfully transplanted after perfusion. There was immediate function of the right renal graft in the postoperative period. The recipient’s serum creatinine level was 530 μmol/L on day 1 following transplantation and 170 μmol/L on day 14 of discharge. The left kidney was preserved by static cold storage and further transplanted to the recipient.

Conclusion. The use of NMP to preserve grafts obtained from ECDs is safe and feasible in clinical practice. Further studies are required to determine the clear indications for its use and to formulate an optimal procedure for its implementation.
Numerical assessment of the effect of xenopericardial bioprosthetic heart valve calcifications on its biomechanics
Authors: Onishchenko P. S. , Klyshnikov K. Yu. , Khromov A. A. , Kostyunin A. E. , Glushkova T. V. , Akentieva T. N. , Ovcharenko E. A.
Published: January 2025

Objective: to conduct a pilot study of the effect of bioprosthetic heart valve leaflet calcification on biomechanics and to identify the «stress in the material – dysfunction» relationship.

Materials and methods. The study’s focus was on two commercially available UniLine bioprosthetic mitral valves sized 26 and 30 (NeoCor, Russia). The samples were subjected to microcomputer tomographic scanning in order to reconstruct calcium volumes. The resulting 3D models were correlated with prostheses of corresponding sizes and projected to the volume of the locking element in the Abaqus/CAE engineering analysis software (Dassault Systemes, France).

Results. According to numerical modeling, the maximum principal stresses increased significantly to 90.8 MPa in the samples, the opening decreased qualitatively, and impact on the prosthetic frame increased. Comparison of stress diagrams of numerical simulation with samples demonstrates the relationship between peak amplitude and rupture and thinning localizations in the flap apparatus.

Conclusion. The work presented demonstrated the findings of a pilot study of the connection between biomechanics in a patient-specific calcified mitral prosthetic heart valve UniLine and macroscopic characterization of explanted samples. The comparative stage showed that stress values correlate with localization of leaflet dysfunction.