bluuebunny/crossref_metadata_2025 huggingface dataset:
Spatial relationship between porphyritic Cu-Au mineral occurrences and magnetic signatures within the Iron Mask Batholith, south-central Cordillera, British Columbia
Authors: Thomas M D
Published: September 2021

Gold-rich porphyry copper deposits are commonly associated with magnetic highs related to high magnetite content - up to 10% volume - within potassium silicate alteration zones. This association promoted magnetic highs as exploration targets. The Iron Mask
batholith (comprising Iron Mask and Cherry Creek plutons) contains more than 50 porphyry Cu-Au mineral occurrences, including the New Afton deposit. The batholith's strong positive magnetic signatures permit examining magnetic high correlations with porphyry-type mineralization and evaluating the
significance of magnetic signatures for mineral exploration.
Groups of prominent magnetic peaks were delineated, with six and two groups present in the Iron Mask pluton and Cherry Creek pluton, respectively. Mineral occurrences occur within the borders of two groups, but are peripheral to other groups, with the nearest occurrence an average of 500 m from the
centre of a group. These close spatial relationships support magnetic exploration for porphyry-copper deposits that significantly narrows the search area. Magnetic exploration is also supported by the observation that porphyry (Cu±Mo±Au) and magnetite-apatite mineralization in the Iron
Mask batholith are related to a single intrusive event, a characteristic shared by iron-oxide copper gold deposits, where magnetite-apatite mineralization is located laterally or deeper. The New Afton deposit is situated laterally to the Magnet magnetite-apatite deposit near the end of a linear
magnetic high passing through the latter.
Spatio-temporal distribution of Devonian post-accretionary granitoids in the Canadian Appalachians: implications for tectonic controls on intrusion-related mineralization
Authors: Kellett D A , Piette-Lauzière N , Mohammadi N , Bickerton L , Kontak D , Rogers N , Larson K
Published: September 2021

Intrusion-related mineralization in the Canadian Appalachian Orogen is widespread and associated with Devonian post-accretionary granitoids. Here we review the spatial and temporal distribution of post-accretionary magmatism across the orogen, and the coeval
structural network that may have facilitated magma ascent and emplacement. We demonstrate that magmatism and associated intrusion-related mineralization were particularly widespread during the Late Devonian, occurring within all tectonic zones of the orogen. This, along with published petrological
arguments, suggests a deep and orogen-scale source for both magma and metals. Lithospheric delamination following terminal continent-continent collision may be a plausible process to initiate magmatism at such a scale, and if so, may be an important geodynamic process for intrusion-related
mineralization. The magmatic belts are spatially associated with shear zones and faults that formed or reactivated during the Late Devonian and likely facilitated magma ascent independent of their kinematics. Further work is required to relate fault kinematics and slip events to magma
emplacement.
Reconnaissance investigation of magnetite trace-element compositions from the New Afton Cu-Au deposit, British Columbia
Authors: Percival J A , Schetselaar E , Petts D C , Jackson S E , Wade D
Published: September 2021

Abundant magnetite occurs sporadically in variable textural settings within the New Afton Cu-Au porphyry deposit. A study to test the utility of magnetic anomalies as an exploration vector was conducted by analyzing magnetite in drill core samples from a variety
of rock types and alteration facies. Magnetite samples from various settings (i.e. disseminated, isolated, vein, breccia grains) were analyzed by a laser-ablation inductively coupled plasma-mass spectrometer for iron and trace elements. New Afton magnetite compositions were compared to previously
defined compositional fingerprints of porphyry, iron oxide copper gold, skarn, polymetallic vein, and layered intrusion deposit types. On multi-element plots using bulk continental crust as the normalizing factor, most New Afton magnetite analyses plot within the high-temperature hydrothermal
magnetite field, although most samples have elevated V and 6 of 19 samples have notably higher W than other deposit types. A hydrothermal origin is supported by a Ti versus Ni-Cr plot, which discriminates hydrothermal from magmatic magnetite; however, a Ti versus V plot suggests mainly magmatic
compositions. Copper is generally depleted relative to bulk crust; gold and platinum values are near their detection limits. Veins, one of the main magnetite habits, define brittle fracture patterns, and trace-element characteristics support formation by pulses of oxidized, high-temperature
hydrothermal fluid. The texture and composition of the samples suggest that magnetite crystallized from late magmatic fluids that drove porphyry mineralization.
Undifferentiated embryonal sarcoma masquerading as liver abscess: A case report with typical imaging features
Authors: Patel Ranjan K. , Pathak Swasti
Published: September 2021

Undifferentiated embryonal sarcoma (UES) is an uncommon paediatric hepatic tumour that clinically simulates a liver abscess when present with fever. This report describes a case of UES in a 12-year-old boy, who presented with abdominal pain, swelling and fever, all simulating a liver abscess. The possibility of UES was considered at imaging, based on the solid appearance on ultrasound and cystic appearance with serpiginous peripheral vessels on computed tomography/magnetic resonance imaging. The diagnosis was confirmed at histopathology.
Pregnancy in Older Women
Authors: Osaikhuwuomwan James A. , Aziken Michael E.
Published: September 2021

Background:

As the number of older women attempting to conceive through donor oocyte-in vitro fertilization (DO-IVF) rises, their safety in pregnancy needs to be judiciously considered.

Aims:

This study aims to review the obstetric and perinatal outcomes of pregnancies achieved by DO-IVF.

Study Setting and Design:

A retrospective study design conducted at a private health facility with services for assisted reproduction and gynecologic endoscopy.

Methods:

A retrospective comparative study of all pregnancies achieved using DO-IVF and that using Self oocyte In-vitro fertilization (SO-IVF) treatment over a 3 years' period was performed.

Statistical Analysis:

Comparative analysis of demographic variables, major obstetric, and perinatal complications was done with Chi-square test and Student's t-test as appropriate. Regression analysis was done to determine a significant predictor variable for pregnancy and delivery outcome. The significance level was set at P < 0.05.

Results:

A total of 343 completed IVF treatment cycles was reviewed; there were 238 DO-IVF and 105 SO-IVF cycles, with clinical pregnancy rate of 41.6% and 37.1%, respectively. The DO-IVF group was significantly older than the SO-IVF group (46.1 years vs. 34.1 years, P < 0.001). Major obstetric complications identified, were hypertensive disorders in pregnancy (23.9%), preterm labor (16.7%), antepartum hemorrhage (11.6%). There was no statistically significant difference between the two groups in terms of obstetric complications and adverse maternal or perinatal outcomes. There were 97 (77.6%) singleton and 28 (22.4%) multiple pregnancies. Pregnancy complications were significantly associated with fetal plurality, P < 0.001. Multiple pregnancy had higher odds of experiencing adverse perinatal 4.96 (1.95–12.58) and maternal 7.16 (2.05–25.03) outcomes compared to singleton pregnancies, P < 0.001.

Conclusion:

Key obstetric outcomes did not differ between DO or SO IVF achieved pregnancy. Even for older women, satisfactory outcomes can be expected for pregnancies achieved by DO-IVF. It is, however, instructive that for multiple pregnancies, obstetricians should institute appropriate surveillance strategies during pregnancy and delivery period and also to develop institutional capacity for quality neonatal care.
Donor lung management
Authors: Shah Unmil , Rahulan Vijil , Kumar Pradeep , Dutta Prabhat , Attawar Sandeep
Published: September 2021

Worldwide, lung transplantation has been a therapeutic option for select end-stage lung disease patients who are on optimized medical regimens, but the underlying clinical condition continues to progress. For any successful lung transplantation program, it is important to have a robust donor lung management program. Lungs are commonly affected by the various factors related to trauma or neurogenic in brain stem death donors. This article would focus on the basic protocols to optimize donor lungs which would help in increasing donor pool. It would also elaborate COVID-specific points for donor lung evaluation. This article would also describe the criteria for ideal as well as marginal donor lungs. A comprehensive literature search was performed using PubMed to review various articles related to donor lung management.
Association between air pollution, body mass index, respiratory symptoms, and asthma among adolescent school children living in Delhi, India
Authors: Salvi Sundeep Santosh , Kumar Abhishek , Puri Harshavardhan , Bishnoi Sukhram , Asaf Belal Bin , Ghorpade Deesha , Madas Sapna , Agrawal Anurag , Kumar Arvind
Published: September 2021

Background:

Delhi is one of the most polluted cities in the world with annual average ambient PM10 and PM2.5 levels exceeding the World Health Organization standards by over 15 fold. We aimed to study the prevalence of respiratory and allergic symptoms and asthma among adolescent children living in Delhi (D) and compare it with children living in lesser polluted cities of Kottayam (K) and Mysore (M) located in Southern India.

Methods:

4361 boys and girls between the age group of 13–14 and 16–17 years from 12 randomly selected private schools from D, K, and M were invited to participate. Modified and expanded International Study for Asthma and Allergies in Children (ISAAC) questionnaires (Q) were filled by the students who also performed spirometry using the ultrasonic flow-sensor-based nDD Spirometer.

Results:

3157 students (50.4% boys) completed the Q and performed good quality spirometry. The prevalence of asthma and airflow obstruction among children living in Delhi was 21.7% using the ISAAC Q and 29.4% on spirometry, respectively. This was accompanied by significantly higher rates of self-reported cough, shortness of breath, chest tightness, sneezing, itchy and watery eyes, itchy skin, and eczema among Delhi children (vs. K-M, all P < 0.05). Delhi children were more overweight and obese (39.8% vs. 16.4%, P < 0.0001), and this was the only risk factor that was strongly associated with asthma (odds ratio [OR]: 1.79; confidence interval: 1.49–2.14), with a more pronounced effect in Delhi children (P = 0.04). Forced expiratory volume1 and Forced vital capacity values were significantly higher in Delhi children (vs. K-M P < 0.0001). Preserved ratio impaired spirometry was more common in K-M children (P < 0.0001).

Conclusion:

Adolescent children living in the polluted city of Delhi had a high prevalence of asthma, respiratory symptoms, allergic rhinitis, and eczema that was strongly associated with a high body mass index (BMI). Our study suggests an association between air pollution, high BMI, and asthma/allergic diseases, which needs to be explored further.
Impact of COVID-19 on (Non-COVID) chronic respiratory disease outcome survey in India (CCROS study)
Authors: Gupta Neeraj , Dhar Raja , Swarnakar Rajesh , Bedi Renu , Chawla Rakesh
Published: September 2021

Background:

India has high prevalence of chronic respiratory diseases, especially bronchial asthma and chronic obstructive pulmonary disease (COPD). Both of these are also recognized as risk factors for severity and poor outcome of COVID-19 disease. It is assumed that COVID-19 outbreak as well as an effective lockdown might have affected the incidence and outcome of some of these.

Methods:

To substantiate above hypothesis, an online survey was mailed to 547 pulmonologists across the country; 314 (54.7%) responses were recorded in the given period. The survey included observations on incidence and outcome of common chronic respiratory diseases such as asthma, COPD and interstitial lung diseases (ILD) in predefined pre-COVID and during COVID period in a total of 24 questions.

Results:

It was observed that the reduction in incidence of outpatient department cases, acute exacerbations and hospitalization for asthma, COPD and ILD was statistically significant. The outcome of acute exacerbations of these chronic respiratory diseases was analyzed in terms of discharges from hospitals after satisfactory recovery and/ or mortalities. For COPD and ILD, it was not significantly affected during the COVID period. At the same time, a relatively higher proportion of acute asthma mortality was reported. A wide variation in nebulization practices was reported during this period. The doses of inhaled corticosteroids in asthma management were not affected. A wide variety of factors including effective lockdown, better quality of air and regular use of masks were probably responsible for reduced incidence of exacerbations of these chronic respiratory diseases.

Conclusion:

We conclude that while outpatient department visits, acute exacerbations and hospitalizations were significantly reduced during COVID-19 period, outcome of asthmatics was relatively unfavorable as compared to that of COPD and ILDs.
Influence of Socio-Economic Status on Lifestyle Preferences Contributing to Childhood Obesity
Authors: Gupte Poonam Ashish , Giramkar Shital Ashok , Bhalerao Supriya Sudhakar
Published: September 2021

Background:

Socioeconomic status (SES) is the major determinant for lifestyle preferences in individuals, contributing to development of metabolic diseases like obesity.

Aims:

This study was undertaken to study the influence of SES on lifestyle preferences, namely dietary habits, food beliefs, physical activity, and their contribution to childhood obesity in school children of Pune city.

Settings and Design:

School-based, cross-sectional, observational study.

Materials and Methods:

Following approval from the Institutional Ethics Committee, the study was conducted in schools representing high, medium, and low SES in Pune. Children of either sex, aged 9–14 years were recruited after obtaining parental consent and verbal assent of children. Anthropometry and body composition along with dietary choices, food beliefs, and physical activity was recorded using predesigned questionnaires

. Statistical Analysis:

Parametric data are expressed as mean ± standard deviation, whereas nonparametric data are expressed as median (range). Distribution of children into different weight categories and data regarding unhealthy food consumption frequency and food beliefs is expressed in percentages. Results: Of 424 total recruited children, obesity prevalence was the highest in high SES school children (10.49%) while overweight prevalence was high in middle SES school children (18.11%). Middle SES school had maximum children with high waist circumference and body fat percentage along with high frequency of unhealthy food consumption. Surprisingly, activity profile from middle SES school was significantly better as compared to other schools.

Conclusion:

Children from middle SES school with maximum prevalence of overweight displayed poor dietary choices, average food beliefs, and habits pressing the need for aggressive strategies for obesity prevention.
Does propofol mode of administration influence psychomotor recovery time after sedation for colonoscopy
Authors: Van der Linden Philippe J. , Verdoodt Hans , Métallo Etienne , Plasman Chantal , Fils Jean-François , Schmartz Denis
Published: September 2021

Background:

Propofol sedation has become increasingly popular for colonoscopy. Different modes of propofol administration have been described, but their influence on psychomotor recovery time remains largely unknown. This prospective randomized assessor-blinded study tested the hypothesis that target-controlled infusion system (TCI) combined with sedation depth monitoring should be associated with a more stable sedation than intermittent bolus application with clinical monitoring of sedation depth, resulting in a faster psychomotor skills recovery.

Methods:

One hundred sixty-four patients undergoing colonoscopy were randomized to receive propofol with the former (TCI group) or the latter (bolus group) mode of administration. Psychomotor skill recovery was assessed using the Choice Reaction Time (CRT) performed before and every ten minutes after waking up from propofol sedation. Clinical recovery was also assessed using the modified Post-anesthetic Discharge Scoring System (PADS).

Results:

Induction and wake up times were longer in the TCI group, where patients received more propofol than those in the bolus group. Evolution of CRT was similar in both groups. Twenty minutes after arrival in the post-anesthesia care unit, 35 (49%) of patients in the TCI group and 43 (54%) in the bolus group achieved CRT values equal or shorter than their baseline values. Interestingly, according to the PADS score, most of the patients were considered fit for discharge at that moment. Incidence of adverse event was not different between groups.

Conclusion:

In the conditions of our study characterized by short procedure duration, target-controlled infusion of propofol does not offer any benefit in terms of psychomotor skills recovery over intermittent bolus application.
Emerging role of the itaconate-mediated rescue of cellular metabolic stress
Authors: Sun Der-Shan , Chang Hsin-Hou
Published: September 2021

Metabolic regulations play vital roles on maintaining the homeostasis of our body. Evidence have suggested that ATF3 and nuclear factor erythroid 2–related factor 2 (NRF2) are critical for maintaining cell function, metabolism, and inflammation/anti-inflammation regulations when cells are under stress, while the upstream regulators in the stressed cells remain elusive. Recent findings have shown that tricarboxylic acid cycle metabolites such as itaconate and succinate are not just mitochondrial metabolites, but rather important signaling mediators, involving in the regulations of metabolism, immune modulation. Itaconate exerts anti-inflammatory role through regulating ATF3 and NRF2 pathways under stressed conditions. In addition, itaconate inhibits succinate dehydrogenase, succinate oxidation and thus blocking succinate-mediated inflammatory processes. These findings suggest itaconate-ATF3 and itaconate-NRF2 axes are well-coordinated machineries that facilitate the rescue against cellular stress. Here, we review these fascinating discoveries, a research field may help the development of more effective therapeutic approach to manage stress-induced inflammation, tissue damage, and metabolic disorder.
La utilización de las notificaciones de las aplicaciones móviles en los medios de comunicación españoles
Authors: De Sola Pueyo Javier , Ortiz Sobrino Miguel Ángel
Published: September 2021

Introducción: Los teléfonos móviles se han convertido en un canal de comunicación más para los medios de comunicación en los últimos años. Esta investigación analiza cómo la radio, la prensa y la televisión española emplean las notificaciones para enviar contenido periodístico a los usuarios de sus aplicaciones móviles. Metodología: se ha realizado un análisis de contenido cuantitativo de 1.226 notificaciones recibidas en las aplicaciones móviles de los nueve principales medios españoles que disponen de app móvil: SER, COPE, Onda Cero, Radio Nacional de España, El País, El Mundo, ABC, La Vanguardia y RTVE. Resultados: el estudio revela que los medios españoles remiten notificaciones, fundamentalmente, con un propósito informativo y de narración de eventos en directo, y que lo hacen, especialmente, para abordar asuntos relacionados con el deporte, la política nacional y, en la actualidad, la crisis sanitaria, económica y social provocada por la COVID-19. La investigación muestra diferencias notables entre las estrategias de los distintos medios de comunicación estudiados y pone de manifiesto una escasa utilización de los elementos gráficos en las notificaciones móviles, así como de la publicidad. Conclusiones y discusión: las alertas informativas están sistematizadas en los medios de comunicación, si bien todavía presentan problemas de funcionamiento en algunos casos y una cierta homogeneidad en formatos y contenidos. Existe un notable margen de aprovechamiento, por ejemplo, en el caso de la publicidad como elemento de monetización de las propias apps.
Effect of Spark Discharge Duration and Timing on the Combustion Initiation in a Lean Burn SI Engine
Authors: Sandhu Navjot Singh , Zhu Hua , Leblanc Simon , Yu Xiao , Yang Huimu , Ting David , Zheng Ming
Published: September 2021

Meeting the increasingly stringent emission and fuel efficiency standards is the primary objective of the modern automotive research. Lean/diluted combustion is a promising avenue to realize high-efficiency combustion and reduce emissions in SI engines. Under diluted conditions, the flame propagation speed is reduced because of the reduced charge reactivity. Enhancing in-cylinder charge motion and turbulence, and thereby increasing the flame speed, is a possible way to harness the combustion process in SI engines. However, charge motion can have a significant effect on the spark ignition process because of the reduced discharge duration and frequent restrikes. A longer discharge duration can aid in the formation of a self-sustained flame kernel and subsequent stable ignition. Therefore, an empirical study is undertaken to investigate the effect of discharge duration and ignition timing on the ignition and early combustion in a port fueled SI engine, operated under lean conditions. Discharge duration is modulated from 1 ms to 8 ms through a continuous discharge strategy. Discharge current and voltage measurements are recorded during the engine operation to characterize the discharge process. In-cylinder charge is diluted using fresh air to achieve lean combustion. In-cylinder pressure measurement and heat release analysis are used to investigate the ignition and combustion characteristics of the engine. Preliminary results indicate that the impact of discharge duration is more pronounced in lean conditions and in the vicinity of the spark advance limit, when ignition process encounters significant challenge. While the discharge duration has a marginal effect on the ignition delay, cyclic variations and stability of the ignition process are notably impacted.
Modelling transport time to trauma centres and 30-day mortality in road accidents in Switzerland: an exploratory study
Authors: Diserens Raphael Victor , Marmy Clotilde , Pasquier Mathieu , Zingg Tobias , Joost Stéphane , Hugli Olivier
Published: September 2021

BACKGROUND: Rapid access to a trauma centre for severely injured road accident victims, conceptualised as the Golden Hour, links access time to definitive treatment within 1 hour of trauma with reduced risks of morbidity and mortality. Access times have not been studied in Switzerland. The aim of this work was to model the transport time by ambulance of seriously injured road traffic accident victims to one of the 12 trauma centres in Switzerland and to investigate whether this time influenced mortality.
METHODS: Isochronous travel curves in 10-minute increments were modelled around each of the 12 Swiss trauma centres to assess travel times at the Swiss national level, based on the shortest travel time from the location of a serious road accident to the nearest trauma centre. We used the national database of the Federal Roads Office, which provided the geolocation of these accidents occurring between 2011 and 2017. The association between mortality and transport time to the nearest trauma centre was then analysed.
RESULTS: The current distribution of trauma centres allowed access time within the Golden Hour for accidents occurring on the Swiss plateau, but the time was more prolonged in the Alps or the Jura. An association existed between mortality and prehospital transport time from the site of an accident to the nearest trauma centre. For each additional 10-minute isochrone, an average increase of 0.4% in mortality was observed.
CONCLUSION: This work showed an adequate distribution of trauma centres in Switzerland and suggests a positive relationship between transport time to the nearest trauma centre and mortality. The numerous confounding factors not systematically collected in publicly available databases limit the robustness of our results. This study confirms the importance of having a national trauma registry to allow quality analyses to guide public health decisions.
Appendicitis and cholecystitis during the COVID-19 outbreak: a multicentre experience
Authors: Teixeira Farinha Hugo , Gilgien Jérôme , Di Mare  Luca , Fournier  Pierre , Ksontini  Riadh , Munday  Andrew , Scarpa Cosimo , Demartines  Nicolas
Published: September 2021

BACKGROUND: The aim of this study was to assess diagnosis severity, perioperative management and outcomes of two common urgent general surgery situations, appendicitis and cholecystitis, during the COVID-19 outbreak in a region with a high incidence of COVID.
METHODS: Retrospective analysis of all appendicitis and cholecystitis cases in a region of western Switzerland (population 850,000) during the first pandemic peak. Primary endpoints were delay after first symptoms to consultation and delay to surgery. Secondary endpoints were disease severity and postoperative outcome compared with the same period in 2019.
RESULTS: 214 patients were included: 99 during the 2020 pandemic and 115 in 2019. Median time to consultation for appendicitis was 48 hours (interquartile range [IQR] 24–96) in 2020 and 24 hours (12–36) in 2019 (p = 0.004); for cholecystitis, it was 48 hours (24–96) in 2020 and 36 hours (24–72) in 2019 (p = 0.28). Median time to surgery after consultation for appendicitis was 6.5 hours (IQR 4–18) in 2020 and 7.3 hours (5–9) in 2019 (p = 0.68), for cholecystitis 20 hours (12–48) in 2020 and 23 hours (14–39) in 2019 (p = 0.91). More antibiotics were prescribed after appendectomy in 2020 (46 vs 31%, p = 0.026). Significantly more perforations/abscesses related to appendicitis and cholecystitis were observed in 2020 during the COVID-19 outbreak (p = 0.007 and p = 0.044, respectively). No differences were found for postoperative complications and length of stay.
CONCLUSIONS: A delay in patients’ arrival at the emergency room was observed for appendicitis. No delay to surgery during the pandemic was observed. A higher rate of perforations and abscesses associated with appendicitis and cholecystitis was observed during the pandemic period. Morbidity and reoperation rate did not change.
Transition from paediatric to adult care: What about the healthy ones?
Authors: Mora-Monteros Maëlle , Barrense-Dias Yara , Auderset Diane , Stadelmann Sophie , Senn Nicolas , Suris Joan-Carles
Published: September 2021

OBJECTIVE: To compare the characteristics of and use of the healthcare system by healthy youths depending on whether they had discussed transition to adult health care with their paediatrician or not.
METHODS: Data were drawn from the fourth wave of the GenerationFRee study (2018–2019) conducted in the 11 post-mandatory schools of the canton of Fribourg, Switzerland. The sample included 931 young people (mean age 19.4 years). Participants were categorised into three groups: those who had discussed transition with their p ediatrician (n = 176; 19%), those who had not (n = 286; 31%) and those who did not know (n = 469; 50%). Analyses were stratified by gender through bivariate analysis and post-hoc tests with a Bonferroni-type adjustment.
RESULTS: The majority of participants did not know whether or not they had discussed transition. Across all groups, it was found that youths met their primary care physician at a higher rate through family. Meeting with the primary care physician through the paediatrician occurred at a higher rate when youths had discussed transition. Girls with a below average socioeconomic status and boys with advanced puberty onset were more likely to have discussed transition. 
CONCLUSION: Our results show that youths are not well informed about the transition process. However, youths who have discussed transition appear to be more involved with the healthcare system as they are more likely to have a primary care provider. In order to avoid discontinuity of care, professionals should approach transition to adult care systematically with all their patients.
Effects of the Porous Microstructure on the Drag Coefficient in Flow of a Fluid with Pressure-Dependent Viscosity
Authors: Zaytoon M.S. Abu , Dajani S. Jayyousi , Hamdan M.H.
Published: September 2021

Equations governing the flow of a fluid with pressure-dependent viscosity through an isotropic porous structure are derived using the method of intrinsic volume averaging. Viscosity of the fluid is assumed to be a variable function of pressure, and the effects of the porous microstructure are modelled and included in the pressure-dependent drag coefficient. Five friction factors relating to five different microstructures are used in this work
Properties and Applications of a Tan–G Family of ”Adaptive Functions”
Authors: Kyurkchiev Nikolay , Iliev Anton , Rahnev Asen
Published: September 2021

In this note we study some properties of an new TAN–G class of trigonometric cumulative distribution functions proposed by Souza, O. Junior, de Brito, Chesneau, Fernandes and Ferreira [1]. We consider also modified families of ”adaptive functions” with ”polynomial variable transfer” with applications to the Antenna–feeder Analysis. We study the ”saturation” - d in the Hausdorff sense for some special cases of this family. The article discusses only model aspects of the possible application that this new family finds in the above area. The models are very sensitive to the coefficients of the polynomial (respectively the number and location of its zeros). This makes these models attractive for simulations. Numerical examples, illustrating our results using CAS MATHEMATICA are given.
Formación docente, práctica docente y práctica reflexiva: un reto de formación en las instituciones docentes del nivel superior.
Authors: Peña Pérez Randy Vladimir , Pérez Priego María del Carmen , Peña Pérez Evelyn
Published: September 2021

La noción de práctica docente está determinada por el contexto social, histórico y social. El fortalecimiento de la misma ha sido elemento clave en todos los niveles educativos del Sistema Educativo Nacional Mexicano. El reto aún no logrado por parte las instituciones docentes del nivel superior, ha sido transformar esta labor docente a un nivel de buenas prácticas, formar formadores capaces de transformar su rol dentro del aula así como su imagen docente, incapacidad de realizar una reflexión sobre sus prácticas en el aula y el desplegar las competencias necesarias para combinar la práctica con la teoría.
Análisis del posgrado escolarizado en México.
Authors: Peinado Camacho José de Jesús , Montoy Hernández Luis Daniel , Cruz Guerra Constantina
Published: September 2021

El objetivo de la investigación fue analizar el posgrado escolarizado del sistema educativo de México. La metodología fue cuantitativa. La investigación fue no experimental con diseño transversal y enfoque descriptivo. La muestra fue no probabilística. El estudio incluyó las 32 entidades federativas que integran la República Mexicana. Las variables a medir fueron el número de escuelas, instituciones, docentes, alumnos, ingresos, egresos y titulados del ciclo escolar 2019-2020. Los resultados evidenciaron que la Ciudad de México, Estado de México, Puebla, Jalisco y Nuevo León mantienen una congruencia consistente entre las variables que se cuantificaron. Estas entidades federativas se encuentran por encima de la media nacional, aunque su posición en las gráficas es cambiante.
La utopía de la revalorización docente.
Authors: González Ortega Braulio , Sánchez Sánchez Itzel Estefanía
Published: September 2021

El objetivo del presente artículo fue reflexionar relativo al concepto de revalorización docente en el marco de las dos últimas Reformas Constitucionales en Materia Educativa. Se partió tácitamente del denominado Acuerdo Nacional para la Modernización Educativa de 1992 en el que se atrajo dicho concepto al lenguaje de la política educativa. El artículo confirma a través de la etnografía de corte trasversal, el supuesto de la inexistencia de una política educativa que revalorice al docente y tiene relación directa con la crisis actual de la función docente que conlleva el peligro de hacer de la educación una profesión imposible. Los resultados prevén la necesidad de revalorizar la función magisterial y apostar a la educación como palanca de desarrollo.
Pertinencia del modelo y la estrategia didáctica de tratamiento a la discalculia a través del método criterio de expertos.
Authors: Fonseca Tamayo Fredi , López Tamayo Pedro Ángel
Published: September 2021

Este artículo hace referencia a la valoración de la pertinencia de un modelo y su estrategia didáctica que fueron sometidos a evaluación a través del método de evaluación por criterio de expertos, por una parte de la comunidad científica especializada para su posible aplicación en la práctica pedagógica. La propuesta se sostiene en los resultados de una tesis de doctorado en Ciencias Pedagógicas y del proyecto “Atención educativa a la diversidad en los diferentes contextos educativos”, la cual se realiza a partir del estudio de la problemática existente y se sustenta en las características de los escolares con discalculia, lo cual se fundamenta en los principales postulados de la escuela socio histórico cultural y la pedagogía cubana.
Sistema de procedimientos para la capacitación pedagógica a educadores políticos en función docente.
Authors: Muguercia Silva Rafaela , Céspedes Acuña Julia Esther , Rodríguez Fernández Carlos Albenis
Published: September 2021

La preparación de los educadores políticos en función docente ha sido una tarea de primer orden por el estado cubano; no obstante, en la práctica se han manifestado insuficiencias que evidencian dificultades en la formación continua, fundamentalmente en la preparación para el empleo de métodos educativos eficientes, aspectos que deben ser razonados desde la Pedagogía como ciencia. El presente artículo propone un sistema de procedimientos para la capacitación pedagógica a educadores políticos en función docente, valorado el modo de proceder de estos para llevar a cabo tareas o ejecutar determinadas acciones a partir del seguimiento de pasos definidos que facilitan la realización de un trabajo de manera correcta.
Rendimiento físico de los cadetes de cuarto año de la escuela de oficiales de la Policía Nacional del Perú.
Authors: Principe Callirgos Alex Pabel , Amao Quispe José Ernan , Gonzales Flores Erika Carmen , Maguiño Basilio Nelida America , Soto Zedano Freddy Alejandro
Published: September 2021

La investigación tuvo como objetivo: determinar la influencia de la motivación en el rendimiento físico de los cadetes de cuarto año de la Escuela de Oficiales de la Policía Nacional del Perú. Fue un estudio con diseño cuasi experimental con el propósito medir el grado de influencia de la variable independiente que es la motivación, sobre la variable dependiente, el rendimiento físico. Se utiliza una población de 200 cadetes y se forman dos grupos: uno experimental y uno de control. Se aplica el test de Cooper para la resistencia aeróbica y el test de Burpee para la resistencia anaeróbica. Entre los principales resultados se aprecia la influencia, directa y significativa de la motivación en el rendimiento físico de los cadetes.
Inequidad y desigualdad; bases para una nueva propuesta educativa en el Perú.
Authors: Gallegos Ada , Ganga Contreras Francisco , Castillo Juan , Teodori de la Puente Doris Renata , Abensur Cecilia
Published: September 2021

La educación peruana, históricamente fue elitista, excluyente y aislada del contexto sociocultural. La secuela de bajo rendimiento escolar y el escaso presupuesto, son algunas de sus características. Se busca proporcionar antecedentes teóricos relacionados con la inequidad y desigualdad de la educación en el Perú, con el fin de sentar bases que posibiliten una nueva propuesta educativa en este país. Se recurrió a la revisión y análisis bibliográfico, utilizando fuentes documentales primarias y secundarias (impresas y electrónicas). Para el registro y acopio de información, se utilizaron fichas textuales y unidades de almacenaje. Se colige que la educación en el país analizado, en su legado histórico, evidencia un bajo compromiso por el pueblo, provocando la marginación y retraso de la educación nacional.
Conjunto de actividades para el dominio de las habilidades investigativas en estudiantes de la carrera de Educación inicial de la Universidad Nacional de Chimborazo, Ecuador.
Authors: Casanova Zamora Tannia Alexandra , Roman Proaño Zoila Grimaneza , Valladares Carvajal Nancy Patricia , Granizo Valdiviezo Mónica Elizabeth
Published: September 2021

El artículo muestra una propuesta consistente en un conjunto de actividades para el dominio de las habilidades investigativas en estudiantes de sexto semestre de la Carrera de Educación Inicial de la Universidad Nacional de Chimborazo. A partir de la caracterización de la problemática se estableció la estrategia metodológica y las actividades para la implementación de la propuesta la cual fue aplicada en el período académico octubre 2019– febrero 2020 con la participación de 41 estudiantes. Durante su desarrollo se empleó el trabajo grupal e individual, y se evidenció su impacto en el dominio de las habilidades investigativas tales como la identificación de problemas, la búsqueda de la información, el procesamiento de la información y la comunicación de resultados.
Cuerpo y discapacidad en la modernización mexicana del siglo XX.
Authors: Enríquez Gutiérrez Gustavo Adolfo
Published: September 2021

El artículo analiza la forma cómo en el siglo XX, se conformó la noción de discapacidad en la educación mexicana en la Ciudad de México, el impacto de esta noción en el imaginario social de las personas y sus cuerpos. Esto implicó el modo en que se gestó el sentido del imaginario social sobre las capacidades en la conformación del proyecto individual impuesto por el mercado. Esto supone desarrollar: 1) La discapacidad corporal y el sentido de la subjetividad en la modernidad mexicana y 2) La discapacidad como interrogación al dominio individual subjetivo moderno mexicano. El texto cierra con una reflexión crítica sobre el cuerpo y la capacidad como parte de la modernidad y la modernización en México.
La orientación a la familia del contexto de montaña para su contribución al desarrollo local.
Authors: Riverón Ovalles Ciro Ángel , Nogueras Planas Ana Irma , Riverón Rodríguez Ciro Uliser , Rodríguez Castillo Reinaldo
Published: September 2021

El artículo presenta los resultados del accionar pedagógico e intersectorial a favor del desarrollo local del municipio Pilón, a partir de la orientación a la familia del contexto de montaña. Su objetivo responde a la política gubernamental refrendada en la Constitución de la República de Cuba y a la Agenda 2030 de la Organización de Naciones Unidas y sus Objetivos de Desarrollo Sostenible, sobre los derechos y deberes de la familia.
El cuentapropismo en el desarrollo socioeconómico territorial de Cuba.
Authors: Gálvez Zaldívar Arnaldo
Published: September 2021

El presente trabajo estima referentes teóricos y político-jurídicos que sustentan al cuentapropismo como forma de propiedad privada, constituido en sector económico complementario y su articulación con las demás formas de propiedad reconocidas en la Actualización del Modelo Económico y Social Cubano de Desarrollo Socialista. El estudio se realiza desde los orígenes de la propiedad privada abordada por los clásicos del Marxismo. El tratamiento dado durante el proceso revolucionario hasta los procesos de flexibilización y ampliación iniciados en la década de 1990 y las peculiaridades de su comportamiento político en el desarrollo socioeconómico territorial, se convierten en interés investigativo desde diferentes miradas disciplinares; teniendo en cuenta la evolución de la normativa política y jurídica establecida en el país.
La conducta penal tributaria y su impacto en la baja recaudación fiscal.
Authors: Terán Vaca Claudio Antonio , Limaico Mina Josué Ramón , Crespo-Berti Luis A.
Published: September 2021

Las conductas penales tributarias en nuestro país están claramente identificadas, se trata del cometimiento de cuatro tipos de delitos que están tipificados en el Código Orgánico Integral Penal (COIP), esto es la defraudación tributaria, la defraudación aduanera, la receptación aduanera y el mal uso de las exoneraciones o suspensiones tributarias aduaneras, para lo cual debemos realizar un estudio de cada una de ellas, con base en datos proporcionados por las autoridades de la administración pública, concretamente por la Fiscalía General del Estado, la Función Judicial, la administración aduanera y la administración tributaria, los cuales serán incluidos en este trabajo investigativo.
Resultados de una investigación en personas adultas mayores con diabetes mellitus tipo II en el centro Casa del Diabético en la ciudad de Tena 2019.
Authors: Mejía Álvarez Edid Tatiana , Aveiga Hidalgo María Verónica , Villa Shagñay Edgar Toni
Published: September 2021

El estudio fue realizado en el centro Casa del Diabético de la ciudad de Tena, cuyo objetivo fue desarrollar estrategias de prevención en complicaciones sobre la Diabetes Mellitus tipo 2 en personas adultas mayores del centro. Este estudio estuvo conformado por 16 personas adultas mayores con Diabetes Mellitus tipo 2. Entre los principales resultados se encontró que el 37% no conoce todos los medicamentos que debe tomar un paciente diabético, 19% no informa a sus pacientes sobre le enfermedades vinculadas con la Diabetes Mellitus tipo 2, y un 25% no informa a sus pacientes la importancia de mantenerse en una buena higiene, datos que permitieron que las estrategias de prevención tengan una viabilidad positiva.
Occurrence, enterotoxin production and antimicrobic susceptibility of Staphylococcus aureus isolates from domestic cheeses in the Dubrovnik area
Authors: Ljevaković-Musladin Ivana , Vodnica-Martucci Marina , Krilanović Marija , Kozačinski Lidija
Published: September 2021

Staphylococcus aureus is a well-known op¬portunistic pathogen that causes a wide range of acute and chronic diseases in both humans and animals. Staphylococcal food poisoning is just one of many diseases caused by this bacterium. The causative agents are entero¬toxins produced by enterotoxigenic strains of S. aureus during its growth in favourable conditions in food. Epidemiological data show that S. aureus is often found in raw milk cheeses and accordingly, cheeses are often implicated in food poisoning outbreaks. Since there are no data on the nature of S. aureus isolated from cheese produced in Croatia, the aim of this study was to determine the occur¬rence, enterotoxin production capability and antimicrobic susceptibility of S. aureus iso¬lates from domestic cheeses produced in the Dubrovnik area. A total of 30 cheese samples were analysed, and 18 samples (60%) were highly contaminated with S. aureus strains. The contamination level ranged from 3.94 to 6.26 log10 cfu/g. Such a high level of contami¬nation was supported by an inappropriate temperature regime above 8°C during market sale. Although highly contaminated, staphy¬lococcal enterotoxins were not detected in any of the cheese samples. A total of 180 coagu¬lase-positive isolates were collected from 18 cheese samples, 175 of which were confirmed as S. aureus by the latex agglutination test. En¬terotoxin production was detected in 35 iso¬lates (20%), and of these 32 isolates produced staphylococcal enterotoxin C. The other three isolates presumably produced enterotoxin E. Antibiotic resistance was detected in 1.1% of isolates and only to mupirocin. However, a full comprehensive conclusion on the nature of S. aureus isolates cannot be achieved with¬out determining its genotype characteristics for the presence of staphylococcal enterotoxin genes and molecular typing, to determine the origin of the isolates.
Procjena histoloških i histokemijskih analiza uzoraka poluopnastog mišića stražnje strane natkoljenice (musculus semimembranosus) janjadi hranjene uz dodatak svježe biomase plemenite pečurke (Agaricus bisporus)
Authors: Popović Maja , Mikuš Tomislav , Špoljarić Daniel , Žura Žaja Ivona , Vlahović Ksenija , Vince Silvijo , Špoljarić Branimira , Šimpraga Miljenko , Shek Vugrovečki Ana , Poljičak Milas Nina , Pajurin Luka , Njari Bela , Mršić Goran , Milinković Tur Suzana , Kozačinski Lidija , Vuković Snježana , Kiš Goran , Pavić Mirela , Mihelić Damir , Leiner Denis , Čurković Snježana , Cvrtila Željka
Published: September 2021

Plemenita pečurka (Agaricus bisporus), osim što je zdrava hrana, pripada i skupini funkcionalne hrane što potiče daljnja istra-živanja njezine primjene kao funkcionalne hrane, odnosno funkcionalnog dodatka hrani ljudima, a i za domaće životinje namijenjene ljudskoj prehrani. Zbog prisutnosti nekih bi¬oaktivnih sastojaka iz skupine polisaharida, lipopolisaharida, esencijalnih aminokiselina, peptida, glikoproteina, nukleozida, triterpe¬noida, lektina, masnih kiselina i njihovih de¬rivata, za ove gljive poznati su protuupalni, protuvirusni, protubakterijski, hepatoprotek¬tivni, protudijabetički, hipolipemijski, pro-tutrombotski, hipotenzivni učinci i sinbiotska svojstva (neizravni probiotik/izravni prebio¬tik). U ovom istraživanju opisane su pozitivne naznake smanjenja lipida i povećanja aktiv¬nosti enzima u m. semimembrannosus janjadi hranjene svježom plemenitom pečurkom, što upućuje na bolji metabolizam i kvalitetu mesa. Na temelju dosadašnjih istraživanja u sklopu projekta HRZZ-a Inovativni funkcionalni proizvodi od janjećeg mesa (IP-2016-06-3685) te istraživanja prikazanih u ovom radu, može se zaključiti i da A. bisporus u janjadi ima poten¬cijalan učinak promotora rasta. Stoga u ovom radu dobiveni rezultati istraživanja imaju znanstveno dokazanu primjenjivu vrijednost za plemenitu pečurku kao prirodan funkcio¬nalni dodatak u dnevni obrok za janjad iz ko¬jeg će se predstaviti tržišno novi i inovativni proizvod u obliku funkcionalne hrane za ljude (janjeće meso dobrog aroma profila s obzirom na sastav hlapljivih spojeva podrijetlom iz ple¬menite pečurke).
EMPREEDEDORISMO, INCLUSÃO, INTERDISCIPLINARIDADE E SUSTENTABILDADE NO ÂMBITO ESCOLAR CONTEMPORÂNEO: PERMANÊNCIAS E RUPTURAS NO CONTEXTO DO PROJETO POLÍTICO-PEDAGÓGICO DE UMA ESCOLA ESTADUAL
Authors: Gláucia Zeferino Viegas Geiza , Luciano de Andrade Vagner
Published: September 2021

Trata-se de artigo objetivando apresentar uma pesquisa acerca de todos os pontos concisos do Projeto Político-Pedagógico - PPP no âmbito do Empreendedorismo, Inclusão, Interdisciplinaridade e Sustentabilidade destacando sua inovação e sua relevância na escola atual. O texto integral ressalta a problemática empreitada pelo PPP para solucionar ou explicar os problemas, desafios, diversidades e possibilidades do espaço escolar. A abordagem metodológica explorada foi o estudo de caso dos fatos corriqueiros de uma escola pública e sua realidade local, bem como uma pequena entrevista com a gestora. Os resultados evidenciaram novidades, descobertas e contradições nas relações e efeitos do PPP. Ainda assim nos requisitos verificados de Empreendedorismo, Inclusão, Interdisciplinaridade e Sustentabilidade, notam-se avanços apenas na área inclusiva, em especial o AEE, sendo as outras demandas ainda são lacunas no currículo vigente.