bluuebunny/crossref_metadata_2025 huggingface dataset:
Etlingera elatior (Jack) R.M, Sm Containing Diet Normalizes Some Metabolic Syndrome Markers due to High-fat High-fructose Diet in Wistar Rats
Authors: Hanifah Nur I.D. , Murwani Retno , Juniarto Achmad Zulfa
Published: December 2020

Background:

Etlingera elatior (Ee) contains phytochemical compounds that are rich in
antioxidants, which may reduce several biochemical markers of metabolic syndrome (MetS).

Objective:

We aimed to study the effect of fresh Etlingera elatior (FEe) and steamed Etlingera elatior
(SEe) as a part of rat diet on body weight, serum lipid, and malondialdehyde (MDA) level in
Wistar rats with MetS induced by a high-fat, high-fructose diet.

Methods:

Our research was a true experimental randomized control group design with pre- and
post-test. A total of 24 male Wistar rats were divided randomly into the following four groups: 1)
Control, fed standard rat diet during the whole duration of the study, 2) HFFr-Sd, fed high-fat high-
-fructose (HFFr) diet for 29 days, followed by 29 days of the standard diet, 3) HFFr-FEe, fed HFFr
diet for 29 days, followed by 29 days of a standard diet containing 33.3% FEe, and 4) HFFr-SEe,
fed HFFr diet for 29 days, followed by 29 days of a standard diet containing 33.3% SEe. The HFFr
diet was given at 15 g/day along with fructose drink (20% pure fructose) at 100 ml/day. The diets
in each group after the MetS induction period are referred to as intervention diets. Data at the end
of HFFr (pre) and intervention diets (post) were analyzed by paired t-test. The data among groups
were analyzed by one-way analysis of variance followed by post hoc test.

Results:

HFFr diet for 29 days induced MetS in Wistar rats fulfilling the criteria of obesity (Lee Index),
hypertriglyceridemia, and decreased high-density lipoprotein cholesterol (HDL-C). Also,
there was a significant increase in serum total cholesterol, low-density lipoprotein cholesterol
(LDL-C), and MDA level (p < 0.05). Feeding a diet containing FEe or SEe can significantly reduce
body weight, serum triglyceride, total cholesterol, LDL-C, and MDA, and increase HDL-C levels
(p < 0.05). The effect of FEe was more pronounced in ameliorating body weight and lipid profile
than SEe.

Conclusion:

Fresh Ee and Steamed Ee can ameliorate obesity, dyslipidemia, and oxidative stress
in MetS Wistar rats induced by a high-fat, high-fructose diet. It suggests that dietary Ee accounting
for one-third of daily standard diet can assist in normalizing some MetS markers in rats.
Improvement of Refined Soybean Oil by Enrichment with Phenolic Extracts from Wild and Cultivated Olive Leaves
Authors: Boucheffa Saliha , Tamendjari Abderezak , Sobhi Widad , Hadjal Samir , Aliane Khellaf
Published: December 2020

Background::

Several researches have focused on the antioxidant capacity of natural
components extracted from plants. Their properties are determined by the presence of phenolic
compounds that extend the shelf life of food and protect fats from autoxidation. Olive leaves, an
abundant raw material, are a significant source of bioactive phenolic compounds, which can be
used to enrich a widely used edible oil.

Objective::

The goal of this study was to improve the properties and stability of soybean oil by adding
phenolic compounds extracted from the leaves of wild and cultivated olive trees.

Methods::

Leaf polyphenolic extracts obtained from Chemlal cultivar and wild olive were used to
enrich refined soybean oil. The antioxidant activity was evaluated for the chain-breaking antioxidant
effect using DPPH and FRAP assay. The oxidative stability was estimated using a rancimat apparatus.
The effect of the frying conditions was studied by determining the rate of the polar fraction.

Results::

Total phenol contents from cultivated and wild olive leaves were important: 1047.19mg
EAG /100g and 1424.59mg EAG/100g, respectively. Oil extracts enriched with Chemlal and wild
olive leaves extracts at 25ppm presented 93.29% and 93.20% inhibition percent of DPPH radical,
respectively. An improvement of 75 and 73% was observed for oils enriched with Chemlal and
wild olive leaves respectively, for the antiradical activity against DPPH radical. The stability of the
enriched oils is proportional to the concentrations of phenolic extracts and higher than that shown
for the non-enriched ones. The frying test showed that the enrichment is causing a complete
absence of polar compounds in the fries.

Conclusion::

The results of this study show the efficacy of adding polyphenols to olive leaves to increase
the quality and oxidative stability of refined soybean oil.
Triptolide Improves Renal Injury in Diabetic Nephropathy Rats through TGF-β1/Smads Signal Pathway
Authors: Pang Ruoyu , Gu Donghai
Published: December 2020

Objective:

To investigate the therapeutic effect and mechanism of Triptolide on renal injury in diabetic nephropathy rats.

Methods:

A total of 15 male SD rats aged 8 weeks were randomly divided into five groups (3 rats in
each group): control group, model group, Triptolide low-dose (Triptolide-L) group, Triptolide medium-
dose (Triptolide-M) group, Triptolide high-dose (Triptolide-H) group. The rat models of diabetic
nephropathy (DN) were established by a single intraperitoneal injection of STZ after being fed with
high-fat and high-sugar diet for 4 weeks, and the fasting blood glucose (FBG) concentration of rats was
detected. After 4 weeks, HE-staining was used to evaluate the renal pathological damage in rats; biochemical
analysis was used to determine the blood urea nitrogen (BUN), serum creatinine (SCr), total
cholesterol (TC), triglyceride (TG); ELISA was used to measure the serum inflammatory factor levels;
Western blot (WB) was used to detect the expression of TGF-β1/Smads pathway proteins.

Results:

In the four FBG tests (once a week), the FBG concentration in the model group was significantly
higher than that in the control group, while Triptolide-treated rats were significantly lower than
that in the model group. Rats in Model group showed obvious renal injury, and Triptolide significantly
improved the renal injury in DN rats. Compared with the control group, the expression of BUN, SCr,
TC, TG, inflammatory factors TNF-α, IL-6 and IL-1β in the model group increased significantly. WB
results showed that the expressions of TGF-β1, Smad3, α -SMA and vimentin in the kidney significantly
increased, while the Smad7 expression significantly decreased. Triptolide significantly reduced
the levels of BUN, SCr, TC, TG and TNF-α, IL-6, IL-1β in diabetic rats, decreased the expression of
TGF-β1, Smad3, α-SMA, vimentin, and increased the Smad7 expression. In different doses of Triptolide
treatment group, its effect showed a significant concentration dependence.

Conclusion:

Triptolide alleviates renal injury in diabetic rats by inhibiting the TGF-β1/Smads signaling
pathway.
Management of COVID-19 - A Review
Authors: Verma Rishabh , Devi Kanchan , Qizilbash Farheen Fatima , Verma Surajpal , Vyas Manish , Haque Anzarul , Taleuzzaman Mohamad
Published: December 2020

Coronavirus disease-2019(COVID-19) has gained much popularity not only in the
Wuhan city of China but internationally also; in January 2020, the corona rapidly spread to many
countries like the USA, Italy, Russia, India, Singapore, Pakistan, Thailand, Canada, Australia, England,
and so on through passengers traveling to other countries.
Corona patients can be cured with synthetic drugs, traditional herbal medicines (THM), use of Vitamin
D and the quarantine approach. Different allopathic medicines, herbal extracts, and vitamin D
have been observed to be useful in the treatment of novel coronavirus, like Remdesivir, hydroxychloroquine,
Teicoplanin, Lopinavir+ Ritonavir, Ribavirin + corticosteroids, Glycyrrhizin, Sanguisorbae
radix, Acanthopanacis cortex, Sophorae radix, etc. Various antiviral drugs are used to treat
COVID-19, alone or in combination with other medications like Interferon-α, Lopinavir + Ritonavir,
Arbidol, corticosteroids, etc., and some herbal extracts; also quarantine approach and Vitamin
D are used that not only cure the infection but also boost up our immunity.
For this review article, different papers were searched on Google Scholar, Scopus, WHO’s website,
PubMed, clinicaltrials.gov and other relevant scientific research websites.
In this review article, we have discussed the current strategies that are being used to treat
COVID-19. Along with allopathic drugs, some herbal extracts can also be used to treat this novel
coronavirus, like Glycyrrhizin, Sanguisorbae radix, Acanthopanacis cortex, Sophorae radix, etc.
and even vitamin D.
Role of Zeolites and Zeotypes in Green Chemistry
Authors: Meshram Jyotsna S. , Raghuvanshi Devendra S.
Published: December 2020

Nowadays, it is of utmost importance to design synthetic methods, which can be utilized
for the generation of substances that will minimize toxicity to the health of humans and the environment.
The utilization of acid catalysts generates lots of corrosive and harmful wastes, which have
to be treated with appropriate alkalis. Hence, it generates lots of sludge and alarms environmental
issues of its storage and disposal. Zeolites and Zeotypes, by virtue of their peculiar properties, such
as specific morphology, porosity and residing acidity, are gaining enormous attention as they replace
harmful acid catalysts efficiently and also reduce chemical waste in the industrial process;
hence, emerged as a new plethora in the field of “Green Chemistry”.
Polymeric Nanostructures for Prospective Tribological Application in Min-iaturized Devices: A Review
Authors: Subramanian Jayalakshmi , Ramachandra Arvind Singh , Raina Ankush , Ul Haq Mir Irfan , Sharma Sanjay Mohan , Chen Xizhang
Published: December 2020

Background::

Tribological issues severely confound smooth operation of moving elements in actuators-based miniaturized devices e.g. micro-electro-mechanical systems. At micro/nano scales, surface forces namely adhesion and friction manifest strongly and oppose relative mechanical motion of actuator elements. Topographical modification of sur-faces via surface patterning has emerged as a potential route to mitigate surface forces at small-scales.

Methods::

Capillary force lithography is a simple yet robust technique to fabricate polymer nanostructures with varying shapes/sizes. This paper presents a brief review on the capillary force lithography technique, its salient features and tribo-logical performance of nanostructures fabricated by the technique.

Conclusion::

Capillary force lithography has several attractive salient features, in particular the ability of the technique to create polymer nanopatterns of varying shapes/sizes without the need for molds with different shapes/sizes. Polymer nanostructures fabricated by the technique effectively reduce surface forces at micro/nano-scales, and are of interest for tribological application in small-scale devices.
Progressive Image Recognition Method and Its Application in Security Inspection Machines
Authors: Jianxing Wu , Dexin Zeng , Qiaodan Ju , Zixuan Chang , Hai Yu
Published: December 2020

Background::

Owing to the ability of a deep learning algorithm to identify objects and the
related detection technology of security inspection equipment, in this paper, we propose a progressive
object recognition method that considers local information of objects.

Methods::

First, we construct an X-Base model by cascading multiple convolutions and pooling layers
to obtain the feature mapping image. Moreover, we provide a “segmented convolution, unified
recognition” strategy to detect the size of the objects.

Results::

Experimental results show that this method can effectively identify the specifications of
bags passing through the security inspection equipment. Compared with the traditional VGG and
progressive VGG recognition methods, the proposed method achieves advantages in terms of efficiency
and concurrency.

Conclusion::

This study provides a method to gradually recognize objects and can potentially assist
the operators in identifying prohibited objects.
Mechanical Property Studies on Flax Fiber Reinforced Basalt Powder Filled Polyester Composite
Authors: Arumugaprabu Veerasimman , Arunprasath Kanagaraj , Mangaleswaran Selvam , Raja Murugesh Manikanda , Jegan Rajendran
Published: December 2020

Background:

The objective of this research is to evaluate the tensile, impact and flexural
properties of flax fiber and basalt powder filled polyester composite. Flax fiber is one of the
predominant reinforcement natural fiber which possess good mechanical properties and addition
of basalt powder as a filler provides additional support to the composite.

Methods:

The Composites are prepared using flax fiber arranged in 10 layers with varying weight percentage
of the basalt powder as 5 wt.%, 10 wt.%, 15 wt.%, 20 wt.%, 25 wt.% and 30 wt.% respectively.

Results:

From the results it is inferred that the composite combination 10 Layers of flax / 5 wt.%,
basalt Powder absorbs more tensile load of 145 MPa. Also, for the same combination maximum
flexural strength is about 60 MPa. Interestingly in the case of impact strength more energy was
absorbed by 10 layers of flax and 30 wt.% of basalt powder. In addition, the failure mechanism of
the composites also discussed briefly using SEM studies.

Conclusion:

Flax fiber reinforced basalt powder filled polyester composites are successfully fabricated
by compression moulding method. Tensile, Flexural and Impact strength gets increased by
varying the flax fiber weight percentage.
Online Behavior Balancing Model for Influence Maximization in Twitter
Authors: Agarwal Sakshi , Mehta Shikha
Published: December 2020

Background:

Social influence estimation is an important aspect of viral marketing. The majority of the
influence estimation models for online social networks are either based on Independent Cascade (IC) or Linear Threshold
(LT) models. These models are based on some hypothesis: (1) process of influence is irreversible; (2) classification of
user’s status is binary, i.e., either influenced or non-influenced; (3) process of influence is either single person’s
dominance or collective dominance but not the both at the same time. However, these assumptions are not always valid in
the real world, as human behavior is unpredictable.

Objective:

Develop a generalized model to handle the primary assumptions of the existing influence estimation models.

Methods:

This paper proposes a Behavior Balancing (BB) Model, which is a hybrid of IC and LT models and counters the
underlying assumptions of the contemporary models.

Results:

The efficacy of the proposed model to deal with various scenarios is evaluated over six different twitter election
integrity datasets. Results depict that BB model is able to handle the stochastic behavior of the user with up to 35%
improved accuracy in influence estimation as compared to the contemporary counterparts.

Conclusion:

The BB model employs the activity or interaction information of the user over the social network platform in
the estimation of diffusion and allows any user to alter their opinion at any time without compromising the accuracy of the
predictions.
A infância é um direito?
Authors: Lopes Frederico , Madeira Rosa , Neto Carlos
Published: December 2020

In this article, we intend to discuss the children’s right to the city, assuming their role as "spatialists" who participate in the transformation of public spaces into meaningful places. The signs of change in the conditions and dispositions of society in relation to the presence of children, as a moving body that transits between unequal spaces, bring with them common territories to different disciplines that investigate childhood. Thus, we situate here the contribution that environmental psychology offers to the dialogue between areas of knowledge that problematize the physical and social invisibility of children and demand public policies for childhood as a condition of citizenship.
Mobile App–Based Remote Patient Monitoring in Acute Medical Conditions: Prospective Feasibility Study Exploring Digital Health Solutions on Clinical Workload During the COVID Crisis
Authors: Shah Sachin Shailendra , Gvozdanovic Andrew , Knight Matthew , Gagnon Julien
Published: December 2020

Background

Digital remote patient monitoring can add value to virtual wards; this has become more apparent in the context of the COVID-19 pandemic. Health care providers are overwhelmed, resulting in clinical teams spread more thinly. We aimed to assess the impact of introducing an app-based remote patient monitoring system (Huma Therapeutics) on a clinician’s workload in the context of a COVID-19–specific virtual ward.

Objective

This prospective feasibility study aimed to evaluate the health economic effects (in terms of clinical workload) of a mobile app on a telephone-based virtual ward used in the monitoring of patients with COVID-19 who are clinically ready for discharge from the hospital.

Methods

A prospective feasibility study was carried out over 1 month where clinician workload was monitored, and full-time equivalents savings were determined. An NHS hospital repurposed a telephone-based respiratory virtual ward for COVID-19. Patients with COVID-19 in the amber zone (according to the National Health Service definition) were monitored for 14 days postdischarge to help identify deteriorating patients earlier. A smartphone-based app was introduced to monitor data points submitted by the patients via communication over telephone calls. We then comparatively evaluated the clinical workload between patients monitored by telephone only (cohort 1) with those monitored via mobile app and telephone (cohort 2).

Results

In all, 56 patients were enrolled in the app-based virtual ward (cohort 2). Digital remote patient monitoring resulted in a reduction in the number of phone calls from a mean total of 9 calls to 4 calls over the monitoring period. There was no change in the mean duration of phone calls (8.5 minutes) and no reports of readmission or mortality. These results equate to a mean saving of 47.60 working hours. Moreover, it translates to 3.30 fewer full-time equivalents (raw phone call data), resulting in 1.1 fewer full-time equivalents required to monitor 100 patients when adjusted for time spent reviewing app data. Individual clinicians spent an average of 10.9 minutes per day reviewing data.

Conclusions

Smartphone-based remote patient monitoring technologies may offer tangible reductions in clinician workload at a time when service is severely strained. In this small-scale pilot study, we demonstrated the economic and operational impact that digital remote patient monitoring technology can have in improving working efficiency and reducing operational costs. Although this particular RPM solution was deployed for the COVID-19 pandemic, it may set a precedent for wider utilization of digital, remote patient monitoring solutions in other clinical scenarios where increased care delivery efficiency is sought.
Ультразвуковое исследование паращитовидных желез. Методология, клиническая оценка
Authors: Kaminskyi O.V.
Published: December 2020

Актуальность. Новым аспектом влияния ионизирующей радиации на организм человека является поражение паращитовидных желез в сочетании с дисбалансом в системе витамина-гормона D, а также дальнейшее развитие вторичного гиперпаратиреоза в отдаленные сроки облучения (более 20–30 лет). Цель: исследовать состояние паращитовидных желез у лиц, подвергшихся облучению в результате аварии на Чернобыльской атомной электростанции (АЭС), разработать методологию клинической оценки ультразвукового исследования (УЗИ) этих желез с учетом клинических особенностей. Материалы и методы. Оригинальное проспективное и ретроспективное исследование является результатом клинического наблюдения состояния паращитовидных желез более 6000 пациентов в течение шести лет, облученных в результате аварии на Чернобыльской АЭС. Результаты. Через 27–32 года после облучения нами выявлена высокая частота гиперплазии паращитовидных желез у лиц, облученных в результате аварии на ЧАЭС, прежде всего у эвакуированных из 30-километровой зоны отчуждения и жителей радиоактивно загрязненных территорий. Не установлено прямой зависимости между структурными изменениями паращитовидных желез и их функциональным состоянием. Нормальные паращитовидные железы не визуализируются при проведении ультразвукового исследования, хотя в наличии у пациентов, при отсутствии напряжения в системе кальций-фосфорного обмена и витамина-гормона D, по структуре и эхогенности полностью совпадают с тканью щитовидной железы. Выводы. При любом обнаружении паращитовидных желез необходимо оценивать их как изменение и гиперплазию, независимо от размера/объема, степени изменения эхогенности или однородности/неоднородности с обязательным последующим определением гормонально-метаболических показателей (паратгормон, кальций общий/кальций ионизированный, 25(OH)D) и клинической оценкой полученных данных.
Apariciones sonoras entre el texto y la ópera: sinestesia y transfiguración en Aura de Carlos Fuentes y Mario Lavista
Authors: González Aktories Susana
Published: December 2020

En este texto se aborda la esfera sonora que vincula las obras Aura (1962) de Carlos Fuentes y la ópera que Mario Lavista compuso y estrenó en 1989 a partir de ella. En primer lugar, se recuerda la importancia que la música tuvo para Fuentes y se analiza la manera en que, en su Aura, se alude al plano sonoro y a otras experiencias sensoriales que operan de manera sinestésica. Después, se hace un recorrido historiográfico que documenta la recepción del texto por parte de diversos compositores y la reapropiación que Lavista hace mediante un proceso sistemático y riguroso, derivado de su amplio repertorio de reinterpretaciones y adaptaciones del plano literario. La idea central del ensayo es mostrar las múltiples relaciones que pueden darse entre la literatura y la música, además de las redes interpretativas y los complejos niveles de sentido resultantes.
Lalo Guerrero y Silvio Rodríguez: resistencia hacia la música comercial
Authors: Carrillo Márquez Noé
Published: December 2020

Las condiciones históricas y musicales de los pueblos chicano y cubano se correlacionan a mediados del siglo XX. Ambos ven en la expansiva influencia musical e ideológica de los Estados Unidos un peligro, mismo que denuncian a través de un artefacto cancionístico: una canción escindida. La estructura y lirismo de “Elvis Pérez” y “Debo partirme en dos” dan cuenta de la naturaleza dividida de sus autores, división que surge debido a su resistencia hacia el éxito e influencia del rock and roll de las décadas de 1950 y 1960, aprovechado por la maquinaria estratégica que el capitalismo emprende para inclinar la balanza a su favor durante la Guerra Fría. Los autores Lalo Guerrero y Silvio Rodríguez, como fundadores de sus respectivos géneros musicales, Chicana y Nueva Trova, ven en la canción un medio para manifestar su posición nepantlera, el acoso norteamericano, y el compromiso del autor con su arte y su comunidad.
Dos momentos en De Ánima de Juan García Ponce: Ecfrasis y apropiacionismo
Authors: Castillo Cadenas Mildred
Published: December 2020

Este artículo analiza dos momentos en la novela De Ánima (1984) de Juan García Ponce, en los cuales se utiliza el recurso de la ecfrasis y el apropiacionismo. Me aproximaré a estas estrategias con el objetivo de observar su funcionamiento en la estructura narrativa, además del efecto de sentido que producen en una lectura que los considere. También pretendo detallar algunas cuestiones de la relación pintura-escritura para observar el tratamiento intermedial establecido por el autor. El primer momento revisa la relación de una obra del pintor Lucas Cranach el Viejo y el procedimiento narrativo utilizado por García Ponce para articular a Paloma, protagonista femenina. El segundo momento contempla el análisis de dos ecfrasis, cuyo origen es Le Déjeuner sur l'Herbe de Édouard Manet, desde dos perspectivas de la misma representación visual. Asimismo, prestaré atención al tratamiento apropiacionista y su efecto de sentido derivado. El artículo se apoya en la noción de ecfrasis de Luz Aurora Pimentel, Irene Artigas y James Heffernan; la estructura abismada de Helena Beristáin; el apropiacionismo de Juan Martín Prada; y el concepto ánima-animus de Carl Jung. Para las imágenes se hace referencia al Cranach Digital Archive.
Covid-19 School Disruptions as Drivers of Curriculum Change in the Forensic Science Chemistry Laboratory
Authors: Villavicencia Queijeiro Alexa , Espinosa Escobar Laura Alicia , Sosa Reyes Ana María , López Zepeda Jorge Luis , Suzuri Hernández Luis Jiro
Published: December 2020

COVID-19 severely disrupted the way students, worldwide, are taught. Courses that rely on hands-on activities to achieve their educational goals have been particularly affected because not all practical skills can be taught effectively outside specialized spaces like laboratories. In spite of the unplanned shift to distance learning, instructors at UNAM’s Forensic Science Undergraduate Program seized this opportunity to engage in a careful examination of teaching practices in the Organic Chemistry laboratory and the role these practices play in realizing the goals of the curriculum. To assess laboratory teaching, we analyzed the laboratory activities completed before shutdown against the criteria of three assessment instruments. Overall, the tasks carried out in the laboratory appear to favor the development of conceptual understanding and the acquisition of technical proficiency in the use of materials and instruments. However, it seems that these aims overshadow other important ones and leave little time for reflection on aspects of the nature of science that could strengthen the research background of forensic scientists. Determining how to adapt laboratory teaching to distance learning must be preceded by a thorough appraisal, not only of the technical obstacles, but also of the aims of the curriculum—particularly when teaching chemistry to non-chemists.
Sobre abismos, montañas y la educación a la distancia
Authors: Torres Herrera Ulises
Published: December 2020

La educación no presencial representó un reto desde diferentes puntos de vista, tanto para alumnos y para profesores. En mi experiencia, el ingrediente fundamental para que los alumnos tuvieran el aprendizaje más significativo posible, fue una extenuante y constante comunicación. Fue necesario trabajar alumno por alumno, tarea por tarea, ejercicio por ejercicio; fue necesario atender sus dudas, entender sus errores y hacérselos saber de manera directa. Al mismo tiempo, esto generó un compromiso de cada estudiante para corregir los errores de sus tareas, para detectar sus deficiencias y atenderlas de forma personal. Porque, al final del día, la responsabilidad del aprendizaje recae casi del todo en cada estudiante. De este modo, el mensaje que se transmite de cara a las dificultades en la educación no presencial, es que lo más importante en la formación científica es la capacidad de criticar el propio trabajo, saber cómo corregirlo, y saber que se tienen que hacer todos los cambios y mejoras que se necesiten, hasta que el trabajo, proyecto o tarea, quede completo y bien realizado. Esa es la responsabilidad de un científico.
De la educación tradicional a una educación remota: retos y oportunidades dentro de la emergencia sanitaria
Authors: Marquez Zetina Jessica Ivette
Published: December 2020

En esta nueva normalidad hizo que la educación se replanteara la forma de transmitir el conocimiento, cambiando paradigmas tradicionales por una actividad dinámica que pudiera adaptarse a las tecnologías dejando retos para los alumnos y docentes, permitiendo implementar métodos didácticos que les fueran más sencillos de aprender utilizando herramientas básicas que se pueden encontrar en su hogar.
Testimonio sobre una reinvención en tiempos de COVID-19
Authors: Matus Myrna H.
Published: December 2020

Testimonio de una profesora-investigadora de la Universidad Veracruzana sobre el cambio de clases presenciales a clases en línea debido a la pandemia de COVID-19.
Mi experiencia durante la pandemia semestre 2020-2
Authors: González Mancera Guillermina
Published: December 2020

No sé por dónde comenzar, empecé a presentirlo cuando empezó a haber el rumor un mes antes y les llegué a comentar a mis alumnos que, si se llegaba a suspender las clases presenciales, seguiríamos en contacto vía correo electrónico, wasap o por Facebook (grupos creados desde inicio de semestre), y en la plataforma EDMODO seguiríamos realizando actividades de la clase como: las asignaciones, tareas, cuestionarios, bibliografía y videos.
El narrador de cuentos en la pandemia del 2020 en la Facultad de Química
Authors: Díaz Alvarez Juan Manuel
Published: December 2020

Reflexiones sobre los efectos, primero en el docente, pero luego en el estudiante y desde luego en la Institución, de la sorpresa, la reacción ante algo ya vivido en episodios sucesivos tanto recientes como antiguos, pero además y eso es lo peor, pronosticado, pero desestimado.

El trauma causado por el choque entre la misión y la obligación, por la adaptación obligatoria que como siempre, requiere en mayor o menor grado de “recursos” que no se encuentran uniformemente distribuidos en nuestro medio.

La angustia por tener que aprender “a fuerza” a usar nuevas y complejas herramientas perdiendo de vista lo importante, pero sobre todo, ignorando cuál será el resultado que como todo lo demás es incierto en esta época tanto  por la pérdida de métodos y referencias, como por  la ausencia de contacto personal, de  la evaluación informal, pero real del aprendizaje y hasta de la propia administración de la institución, conducida muchas veces de manera efectiva en “juntas de pasillo”, ahora casi inexistentes. 

Se impone una “corrección de errores”, así como, un esfuerzo de la comunidad entera por elaborar las crónicas de este tiempo a toda prisa, antes de que la adaptación forzada, siguiendo el paso de la evolución de los medios electrónicos, nos haga olvidar y, por tanto, desperdiciar esta experiencia. 
Del laboratorio al aula virtual y simuladores
Authors: Vega-Rodríguez Aidee
Published: December 2020

En este texto cuento sobre la forma en la que tabajé con mis alumnos durante el confinamiento, en la que pasamos del laboratorio a clases en línea utilizando simuladores para poder ver los experimentos que debímos haber hecho en el laboratorio de manera virtual y cómo el Google Classroom me ayudó a poder seguir en contato con ellos, calificar y darles retroalimentación de forma eficiente, sin tener que estar todo el tiempo conectada con ellos. Creo que para los estudiantes también fue una buena opción de trabajo y les gustó mucho, pues recibí bastantes buenos comentarios al final del semestre de la forma en la que se terminaron las clases. 
Un curso de Electroquímica en tiempos de pandemia: el ecosistema educativo en acción.
Authors: Ramos Mejía Aurora De los Ángeles
Published: December 2020

En este trabajo describo una experiencia, durante el periodo de enseñanza remota de emergencia provocado por la pandemia de Covid-19, para un curso universitario de Electroquímica, con un grupo numeroso de estudiantes. Destaco la importancia de que el docente tenga preparación tanto con la tecnología con propósitos educativos, como con la didáctica del Aprendizaje Basado en Problemas aplicada en cursos de ciencias, haciendo énfasis en el trabajo colaborativo y la formación de comunidades de aprendizaje, para así desarrollar un ecosistema educativo adecuado que propicie aprendizajes y desarrolle habilidades.
La gran respuesta de nuestra comunidad. Motivos para un optimismo cauteloso.
Authors: Escalante-Tovar Sigfrido
Published: December 2020

La pandemia por SARS-Cov 2 y el obligado confinamiento con la interrupción de actividades forzaron al mundo entero en los últimos 8 meses a entrar en procesos inéditos. 28 péptidos y una molécula de RNA fueron suficientes para poner al mundo de rodillas. Los efectos verticales y transversales en la comunidad mundial impactaron a las personas, a las comunidades y las instituciones de mil maneras. No obstante, la comunidad de la Facultad de Química progresivamente ha respondido a esta situación de formas muy creativas que reflejan la fortaleza de una colectividad que es capaz de aprender y construir entre carencias, pérdidas y adversidad. Las iniciativas de algunos grupos de nuestra comunidad han ido estimulando la participación de muchos más. Por su número y compromiso, es destacable el papel de las mujeres, maestras y alumnas en estas iniciativas.
Gestão do Conhecimento e co-criação de valor em Serviços Informacionais
Authors: Silveira Murilo Mauro , Varvakis Gregório
Published: December 2020

El objetivo del estudio es identificar cómo la GC (gestión del conocimiento) puede contribuir al proceso de cocreación de valor en los servicios de información. La investigación está justificada, puesto que la GC ofrece numerosas ventajas en las bibliotecas con el propósito de cambiar drásticamente sus necesidades y capacidades en la provisión de servicios de información. La metodología de la matriz cualitativa y constructivista utilizó el proceso de desarrollo del conocimiento - instrumento constructivista (ProKnow-C) para la selección de literatura, identificación / análisis y formación de un portafolio bibliográfico (PB). El análisis se basa en Vargo y Lusch (2004), con respecto a la GC y sus procesos de intercambio de conocimiento (recursos operativos, dinámicas, competencias, aprendizaje y cocreación de valor). Desde la perspectiva de los servicios de información, resultó en la discusión de recursos operativos (información y conocimiento) y su gestión, el proceso de intercambio (aprendizaje organizacional), las habilidades de los profesionales y el valor caracterizado en este nuevo contexto (cocreación). Se concluye que la GC puede ofrecer herramientas para mejorar los serviciosde información, y no sólo agregar valor, sino más bien crearlo conjuntamente, de modo que tanto los usuarios como la organización se beneficien en este contexto.
Comparison of methods for determining the physical parameters of the resonator of a solid-state wave gyroscope
Authors:   Kalashnikov Izhevsk State Technical University, Mingazov Ramis I. , Spiridonov Fedor I. , Vikhlyaev Ivan A. , Shishakov Konstantin V.
Published: December 2020

The article deals with the problem of identifying the dynamic parameters of the resonator of a solid-state wave gyroscope, based on the signals measured when the sensor is operating in free-run mode. The search for the dynamic parameters of a solid-state wave gyroscope is one of the most important operations of the quality control of its production. The paper describes two methods for determining the physical parameters of a quartz resonator of a solid-state wave gyroscope. For each method, the mathematical substantiation of the relationship between the dynamic behavior of the resonator and its physical parameters is given. On the basis of each of the techniques, an algorithmic support for the extraction of the physical parameters of the resonator of a solid-state wave gyroscope is presented. The research of the accuracy of calculating the visual parameters by the described methods on experimental data of a resonator with known parameters has been carried out. The results obtained show the practical applicability of the described methods. An example of using the methods described in the work is the identification and control of the dynamic parameters of a quartz hemispherical resonator of a solid-state wave gyroscope at the technological stage of “balancing”.
ENHANCED ORAL BIOAVAILABILITY IN ALBINO RABBITS OF LOVASTATIN NANOPARTICLES
Authors: Shinde Anilkumar Jalindar
Published: December 2020

The aim of the study was to compare the single dose oral bioavailability of lovastatin (LV) nanoparticles in albino rabbits. Plasma was analyzed for lovastatin using a sensitive, reproducible, accurate and validated RP-HPLC method. Pharmacokinetic parameters including AUC, Cmax, Tmax, t1/2, MRT and Kel were determined from plasma concentration of the formulations. The randomly divided into three treatment groups with six animals in each group, as standard I, Standard II and Test. Lovastatin pure drug and lovastatin lovastatin marketed formulation were administered to standard group. Lovastatin loaded nanoparticles suspension was administered to test group. Â The Cmax of LV nanoparticles was found to be 72.28 Â±0.158 ng/ml, whereas Cmax value for the drug suspension and marketed tablet formulation was found to be 33.10 Â± 0.176ng/ml and 40.96 Â±Â  0.244ng/ml respectively. (P < 0.001) indicating facilitated absorption of LV by nanoparticles. Tmax of lovastatin nanoparticles was 2 hrs, whereas for the drug suspension and marketed tablet formulation were 1 h respectively. (P < 0.001) The AUC (0â€“âˆžh) value for the lovastatin nanoparticles, drug suspension and marketed tablet formulation were found to beÂ  301.43 Â±0.165 (ng/ml Ã— h), 73.88 Â± 0.210Â  (ng/ml Ã— h) andÂ Â  120.51 Â± 0.338 (ng/ml Ã— h) respectively. (p < 0.001) The mean residence time (MRT) values for the lovastatin nanoparticles, drug suspension and marketed tablet formulation were found to be 1.41 h, 1.35 h and 1.63 h respectively. (P < 0.001) Â The relative bioavailability was found to be significant improvement in bioavailability (1.5 fold) as compared with the conventional tablets.
Levantamiento de los petroglifos del río Caquetá entre la Pedrera y el Araracuara
Authors: Von Hildebrand Elizabeth R.
Published: December 2020

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La cerámica panche tipo “El Peñón”, un ejemplo de delimitación cerámica por computador
Authors: Perdomo Lucía R. de
Published: December 2020

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Documentos del Siglo XVIII referentes a la provincia de los pastos: problemas de interpretación
Authors: Uribe María Victoria
Published: December 2020

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A INSTITUCIONALIZAÇÃO DO RACISMO CONTRA NEGROS(AS) E AS INJÚRIAS RACIAIS NO ESPORTE PROFISSIONAL: O CONTEXTO INTERNACIONAL
Authors: Farias Lennon Giulio Santos de , Nepomuceno Léo Barbosa , Neto Luiz Sanchez , Silva Eduardo Vinícius Mota e
Published: December 2020

O racismo é um fenômeno sociocultural que tem notável expressão nos campos esportivos. O objetivo desta pesquisa foi analisar a produção científica internacional sobre o racismo nos esportes profissionais publicada entre 2008 e 2018. A busca foi realizada em duas bases de dados: Portal da Capes e revistas indexadas na área de avaliação “Educação Física” da Plataforma Sucupira. Foram selecionados 65 artigos os quais são analisados a partir das categorias “injúria racial” e “racismo institucional”. Vários casos de injúria racial são analisados e ilustram formas como o racismo tem colocado obstáculos às trajetórias de atletas negros em diversas modalidades. No plano institucional, são analisadas campanhas contra o racismo, bem como formas racistas de discriminação presentes em esportes como futebol, basquete, beisebol e futebol americano. Destacam-se a variedade de enfoques, a relevância dos estudos e a importância da temática para o enfrentamento do racismo nos campos esportivos estudados.
Desafios Metodológicos e Formativos em Pesquisa com Mulheres na Prisão
Authors: Nunes Caroline Cabral , Macedo João Paulo
Published: December 2020

Propõe discussão acerca dos desafios metodológicos e formativos em pesquisa-intervenção ao investigar as relações de poder que incidem sobre os corpos femininos na prisão. Objetiva apresentar como a investigação foi tecida e atravessada pelos encontros-acontecimentos com 12 mulheres numa prisão mista, por meio de observações, registro em diários de campo e realização de entrevistas coletivas. Três blocos de discussão abordam os atravessamentos e aprendizagens para realizar pesquisas com mulheres na prisão: modulações no corpo-experiência para cultivar outras percepções e aprendizagens no fazer-pesquisa; deslocamentos subjetivos e experimentações no caminhar da pesquisa; e discutindo os deslocamentos de si no processo de escrita acadêmica de uma pesquisa coproduzida com mulheres na prisão.
DOS DIREITOS DOS GOVERNADOS EM MICHEL FOUCAULT
Authors: Soler Rodrigo Diaz de Vivar y
Published: December 2020

Nosso artigo procura pensar os direitos dos governados em Michel Foucault como uma crítica à governamentalidade e a biopolítica. Em um primeiro momento, é apresentado uma breve exposição sobre as possíveis correlações entre uma história política da governamentalidade e os processos de condução das condutas produzidas por práticas refletidas de governo a partir de Foucault. Em um segundo momento, destacamos a emergência da biopolítica e dos modos de condutas do liberalismo e do neoliberalismo, na formação do que Foucault chama de modulação de modos de subjetivação tipicamente econômicos. O terceiro momento do artigo é dedicado a pensar as insurreições dos direitos dos governados como estratégias de resistências aos processos de governamentalização da vida. Nossas considerações finais apontam para os tensionamentos das insurreições dos governados como uma forma de vida contrária as diretrizes econômicas da governamentalidade e da biopolítica, por meio do que Foucault chama de política espiritual da revolta.
Encontro de Mulheres no CRAS: Uma Experiência na Construção Grupal
Authors: Lopes Deise Lucia Antunes , Maheirie Kátia , Justo Ana Maria
Published: December 2020

Este estudo é resultado de uma pesquisa-intervenção realizada com um grupo de mulheres que participa de uma atividade regular em um CRAS da região metropolitana de Florianópolis – SC. O objetivo deste artigo é apresentar e discutir o diário de campo produzido entre junho de 2017 a dezembro de 2018. As informações foram sistematizadas com o auxílio do software IRAMUTEQ que permitiu a identificação das categorias de análise do estudo, por meio da Classificação Hierárquica Descendente (CHD), distinguindo quatro classes que foram objeto de discussão e analisadas a partir da dialética de grupos de J. P. Sartre. Os resultados apontaram que a experiência grupal permitiu o estabelecimento do “nós” e da importância do outro e do grupo como mediador no fortalecimento de vínculos familiares e comunitários. O grupo de mulheres foi, também, um espaço importante de acesso ao serviço, pois por meio dele puderam acessar seus direitos sociais.
Application of Environmental-Based Scientific Approach to Improve Science Learning Activities and Outcomes in Grade IV Students of SD Inpres Koya, North Morowali Regency
Authors: Surahman Surahman , Suleman Samsurizal M. , Hatibe Amiruddin
Published: December 2020

This study aims to describe an increase in science learning activities and learning outcomes of fourth-grade students through the application of an environment-based scientific approach in the SD Inpres Koya. The research method uses the Hopkins model design, which consists of 4 stages, namely planning, implementation, observation, and reflection. The place for conducting the study was at SD Inpres Koya, from July to August 2018. The research subjects were 12 students. The data collection technique uses observation and test methods. Data analysis was done by analyzing data qualitatively and quantitatively. The results showed that the activity of students increased (15.33%) in the first cycle to the second cycle. Teacher activity increased (14.66%) from the first cycle to the second cycle. Data on student learning outcomes for pre-action classical absorption (57.50%), cycle I (74.14%), and cycle II (85.83%) increased (11.69%). For classical learning completeness pre-action (41.66%), cycle I (75.00%), and cycle II (100%) increased (25.00%). Based on these results, it can be concluded that the application of an environment-based scientific approach can improve the activities and learning outcomes of science in the fourth grade of SD Inpres Koya.
Detecting Selection on Segregating Gene Duplicates in a Population
Authors: Stark Tristan , Kaufman Rebecca , Maltepes Maria , Liberles David
Published: December 2020

Gene duplication is a fundamental process that has the potential to
drive phenotypic differences between populations and species. While
evolutionarily neutral changes have the potential to affect phenotypes,
detecting selection acting on gene duplicates can uncover cases of
adaptive diversification. Existing methods to detect selection on
duplicates work mostly inter-specifically and are based upon selection
on coding sequence changes, here we present a method to detect selection
directly on a copy number variant segregating in a population. The
method relies upon expected relationships between allele (new
duplication) age and frequency in the population dependent upon the
effective population size. Using both a haploid and a diploid population
with a Moran Model under several population sizes, the neutral baseline
for copy number variants is established. The ability of the method to
reject neutrality for duplicates with known age (measured in pairwise dS
value) and frequency in the population is established through
mathematical analysis and through simulations. Power is particularly
good in the diploid case and with larger effective population sizes, as
expected. With extension of this method to larger population sizes, this
is a tool to analyze selection on copy number variants in any natural or
experimentally evolving population.
Complex effects of non-host diversity on the removal of free-living infective stages of parasites
Authors: Welsh Jennifer , Markovic Mirjana , Thieltges David , Meer Jaap van der
Published: December 2020

Ecological communities can affect transmission pathways of parasites and
pathogens, ultimately affecting disease dynamics. While the community
composition of less competent decoy hosts is known to affect diseases in
focal hosts, it remains poorly understood whether such diversity effects
also exist when non-host organisms remove free-living parasite stages,
e.g. by predation. In response surface design laboratory experiments, we
investigated non-host diversity effects on the removal of cercarial
stages of trematodes, ubiquitous parasites in aquatic ecosystems. In all
three combinations of two non-hosts at four density levels, the addition
of a second non-host did not generally result in increased parasite
removal but neutralised, amplified or reduced the parasite removal
exerted by the first non-host, depending on the density. These complex
non-host diversity effects were probably driven by intra- and
interspecific interactions and suggest the need to integrate non-host
diversity effects in understanding the links between community diversity
and disease risk.
Mating systems and predictors of relative reproductive success in a cutthroat trout subspecies of conservation concern
Authors: Hargrove John , McCane Jesse , Roth Curtis , High Brett , Campbell Matthew
Published: December 2020

Mating systems and patterns in reproductive success of fishes play an
important role in ecology and evolution. While information on the
reproductive ecology of many anadromous salmonids (Oncorhynchus
spp.) is well-detailed, there is less information for non-anadromous
species including the Yellowstone Cutthroat Trout (O. clarkii
bouvieri), a species of recreational angling importance and
conservation concern. Here, we used data from a parentage-based tagging
study to describe the mating system of Yellowstone Cutthroat Trout from
a spawning tributary of the South Fork Snake River, Idaho, and identify
predictors of relative reproductive success. We detected evidence of
monogamy, polygyny, and polyandry and showed that reproductive success
was best explained by arrival time at the spawning ground and total
length. Specifically, the largest adults arrived earliest in the season
and produced a disproportionate number of offspring. Lastly, we
estimated the effective number of breeders (N)
and effective population size (N) and showed
that while Nb was lower than Ne, both are sufficiently high to suggest
Yellowstone Cutthroat Trout in Burns Creek represent a genetically
stable and diverse population.