bluuebunny/crossref_metadata_2025 huggingface dataset:
Perceptions on the Use of Wearable Sensors and Continuous Monitoring in Surgical Patients: Interview Study Among Surgical Staff
Authors: Joshi Meera , Archer Stephanie , Morbi Abigail , Ashrafian Hutan , Arora Sonal , Khan Sadia , Cooke Graham , Darzi Ara
Published: February 2022

Background

Continuous vital sign monitoring by using wearable sensors may result in the earlier detection of patient deterioration and sepsis. Few studies have explored the perspectives of surgical team members on the use of such sensors in surgical patients.

Objective

This study aims to understand the views of surgical team members regarding novel wearable sensors for surgical patients.

Methods

Wearable sensors that monitor vital signs (heart rate, respiratory rate, and temperature) continuously were used by acute surgical patients. The opinions of surgical staff who were treating patients with these sensors were collated through in-depth semistructured interviews to thematic saturation. Interviews were audio recorded, transcribed, and analyzed via thematic analysis.

Results

A total of 48 interviews were performed with senior and junior surgeons and senior and junior nurses. The main themes of interest that emerged from the interviews were (1) problems with current monitoring, (2) the anticipated impact of wearables on patient safety, (3) the impact on staff, (4) the impact on patients overall, (5) potential new changes, and (6) the future and views on technology.

Conclusions

Overall, the feedback from staff who were continuously monitoring surgical patients via wearable sensors was positive, and relatively few concerns were raised. Surgical staff members identify problems with current monitoring and anticipate that sensors will both improve patient safety and be the future of monitoring.
Examining the International Palliative Care Systems in Rural Areas: Protocol for a Comparative Case Study (Preprint)
Authors: Mondejar-Pont Meritxell , Abbott-Anderson Kristen , Ramon-Aribau Anna , Kumpula Renee , Neiman Tammy , De Ruiter Hans-Peter
Published: February 2022

BACKGROUND

The aging population in the Global North is associated with an increased prevalence of multiple chronic diseases that would benefit from integrated palliative care. In this context, it is vital to consider the effectiveness of health care systems’ response to the needs of the older population residing in rural areas, including access to palliative care services. Understanding palliative care program availability and palliative care system characteristics is important in creating useful health interventions in rural areas.

OBJECTIVE

This study aims to provide an international view on palliative care in rural areas. A study exploring palliative care services offered in Southern Minnesota will be carried out, building on a previous study conducted in Osona, Spain. Findings from both studies will be compared, providing insights into the strengths of each system and identifying areas for growth.

METHODS

This study will be performed using qualitative case study methodology. Using a similar methodology to the one used in the Spanish study, palliative care services will be explored in a similarly sized rural area in Southern Minnesota. This will be accomplished by (1) reviewing available literature related to the Southern Minnesota palliative care system and (2) identifying key providers in this US palliative care system who will be invited to participate in semistructured interviews. The study participants will be asked about the gaps between ideal integrated palliative care system services and the existing complementary palliative care services, and the ethical issues and dilemmas that evolved during the COVID-19 pandemic.

RESULTS

Following ethical approval for this protocol, data collection is anticipated to begin in spring or summer 2022 and is expected to take 6 months. Data collection will be followed by data analysis in fall 2022. Finally, the researchers plan to disseminate the findings in spring 2023.

CONCLUSIONS

Comparing 2 similarly sized but culturally different rural palliative care systems in Minnesota and Osona will provide insights into how integrated palliative care systems impact the older population and those with chronic illnesses. Study findings will contribute to enhanced patient care, organizational improvements, policy change, and an understanding of the impact of different health care system models.

INTERNATIONAL REGISTERED REPORT

PRR1-10.2196/36037
Increasing Intensivists’ Trust in a machine learning-Based Bacteremia Diagnosis System Through User-Interface Design: The Impact of Information Relevancy and Interactivity (Preprint)
Authors: Katzburg Omer , Roimi Michael , Frenkel Amit , Ilan Roy , Bitan Yuval
Published: February 2022

BACKGROUND

The exponential growth in computing power and increasing digitization of information have advanced the machine learning (ML) research field substantially. However, ML algorithms are often considered “black boxes”, and this fosters distrust. In medical domains, in which mistakes can result in fatal outcomes, practitioners may be especially reluctant to trust ML algorithms.

OBJECTIVE

To explore the effect of user-interface design features on intensivists’ trust in a ML-based clinical decision support system.

METHODS

Forty-seven physicians from critical care specialties were presented three patient cases of bacteremia in the setting of an ML-based simulation system. Three conditions of the simulation were tested according to combinations of information relevancy and interactivity. Participants’ trust in the system was assessed by their agreement with the system’s diagnoses and a post-experiment questionnaire. Linear regression models were applied to measure the effects

RESULTS

Participants’ agreement with the system’s diagnoses did not differ according to the experimental conditions. However, in the post-experiment questionnaire, higher information relevancy ratings and interactivity ratings were associated with higher perceived trust in the system (P < 0.001 for both). The explicit visual presentation of the features of the ML algorithm on the user-interface resulted in lower trust by the participants (P < 0.05).

CONCLUSIONS

: Information relevancy and interactivity features should be considered in the design of user interface of ML-based clinical decision support systems, to enhance intensivists’ trust. This study sheds light on the connection between information relevancy, interactivity, and trust in human–ML interaction, specifically in the intensive care unit environment.

CLINICALTRIAL

Non- clinical
Outcomes of the COVID-19 infection in people previously vaccinated against influenza. A population-based cohort study with electronic health records. (Preprint)
Authors: Giner-Soriano Maria , de Dios Vanessa , Ouchi Dan , Vilaplana-Carnerero Carles , Monteagudo Mònica , Morros Rosa
Published: February 2022

BACKGROUND

A possible link between influenza immunization and susceptibility to COVID-19 infection has been previously suggested due to a boost in the immunity against SARS-CoV-2.

OBJECTIVE

We aimed to assess this hypothetic association in our setting.

METHODS

Population-based cohort study including all patients with COVID-19 registers in the primary health care (PHC) electronic records during the first wave of the COVID-19 pandemic (1st March 2020 – 30th June 2020) in Catalonia, Spain. We compared those people ever exposed to influenza vaccine before the COVID-19 infection with those never exposed. The data source is SIDIAP, capturing PHC information of 5.8 million people from Catalonia. The main outcomes assessed during follow-up were diagnosis of pneumonia, hospital admission and mortality.

RESULTS

We included 309,039 COVID-19 patients and compared them according to their influenza immunization status, being 114,181 (36.9%) vaccinated at least once and 194,858 (63.1%) never vaccinated. 21,721 (19%) of the flu-vaccinated and 11,000 (5.7%) of the non-vaccinated had at least one of the outcomes assessed. Those vaccinated against flu at any time, recently or recurrently before COVID-19 had higher risk of presenting at least one of the outcomes than those non-vaccinated. When we excluded people living in long-term care facilities, the results were similar.

CONCLUSIONS

We were not able to find a protective role of the immunity conferred by the influenza vaccine on the outcomes of the COVID-19 infection, as the risk of COVID-19 complications was higher in the vaccinated than in the non-vaccinated. Our results are from the first wave of the pandemic, were more complications and mortality due to COVID-19 occurred. Despite that, our study adds more evidence to the analysis of the possible link between the quality of the immunity and the COVID-19 outcomes and to the analysis of PHC patients.

CLINICALTRIAL

AEMPS classification
IDI-VAC-2020-21. Estudio Posautorización con Otros Diseños diferentes al de seguimiento prospectivo, EPA-OD. 15th September 2020.
Mixed method process evaluation of the exergame BOOSTH intervention in a primary school setting (Preprint)
Authors: ten Velde Gabrielle
Published: February 2022

BACKGROUND

Exergames are novel promising interventions for physical activity (PA) promotion in children due to the attractiveness of the gaming component. Nevertheless, only a few studies have assessed the long term effects of exergames to promote PA. The school-based exergame BOOSTH combines an activity tracker, an online game and a battle which enables competition between groups. As a reward for the performed PA, children can unlock levels in the game. In a previous study on the effectiveness, no positive intervention effects on PA levels and motivation towards PA were detected. In the current study, the implementation of the school-based BOOSTH exergame was evaluated.

OBJECTIVE

The aim of the current study was to conduct a mixed method process evaluation of the school-based exergame BOOSTH.

METHODS

Both quantitative and qualitative data were collected from children (n=355), parents (n=122) and teachers (n=28) three- and six months after the start. Data were derived by means of self-administered questionnaires and focus groups (n=7). The following components were evaluated: recruitment, fidelity (quality), dose delivered (completeness), dose received (exposure and satisfaction), reach (participant rate) and context.

RESULTS

A top-down approach was used for the recruitment of the schools. After the implementation, 85% of the children reported that they logged into the game. After three months 48% of the children still logged into the BOOSTH app which decreased to 29% at six months. Although BOOSTH is an exergame, the activity tracker was mentioned by children as their favorite part of the intervention. Children did not experience group pressure to join friends in playing the game or joining the battle. The majority of children reported that the exergame was easy to use. Lack of instructions, time to support the use of BOOSTH, and technological issues were most frequently mentioned barriers by teachers.

CONCLUSIONS

The school-based exergame BOOSTH is an innovative intervention, however, the implementation was not successful since the majority of the children did not use the game longer than a few weeks. Only delivery of an exergame intervention in a school setting is not sufficient for long-term use. Lessons learned from this study underscore the importance of a flawless technical application, tailored gaming experiences including variations in the game, the value of combining school-based interventions with clear teacher instructions and parental support, and additional activities to foster long-term behavioral change.

CLINICALTRIAL

ClinicalTrials.gov, NCT03440580, https://clinicaltrials.gov/ct2/show/NCT03440580.

INTERNATIONAL REGISTERED REPORT

RR2-10.2196/24035
Synthesis of Mn-Doped Fe-MOFs with Different Ratios and Its Application for Photocatalytic Degradation of Rhodamine B Dye
Authors: Tran Kim Ngan Thi , Tran Thuy Bich , Do Sy Trung , Nguyen Kim Oanh Thi , Lam Tan Van
Published: February 2022

Recent trends in environmental remediation have shifted to the use of metal-organic framework (MOF) composites due to their unique structural properties. It is still challenging to diversify MOFs photocatalysts to fulfill application to treat toxic organic pigments. In this study, Fe-MOF bimetallic materials were synthesized by doping Mn2+ ions at different ratios. The structural and morphological characteristics of the materials were analyzed by XRD, UV-Vis, FT-IR, SEM, and UV-Vis DRS methods. Mn/Fe-MOF bimetallic organic framework materials were used to evaluate the photocatalytic degradation of Rhodamine B (RhB) dyes. The results show that, under the same experimental conditions, the RhB degradation efficiency of Mn/Fe-MOF is enhanced than that of the pristine Fe-MOF catalyst under the influence of visible light. After 120 min, the RhB solution was decomposed to 91.78% by combining 0.1 Mn/Fe-MOF, H2O2, and visible light irradiation. At the same time, the presence of H2O2 in the reaction system also showed a strong impact on the efficiency of RhB degradation. The activity from the two metal centers of Mn/Fe-MOF contributes to the formation of a unique structure and composition that can be used as a photocatalyst for colored wastewater treatment.
Improving the Performance of Polymer Inclusion Membranes in Separation Process Using Alternative Base Polymers: A Review
Authors: Nitti Fidelis , Selan Odi Theofilus Edison , Hoque Bosirul , Tambaru David , Djunaidi Muhammad Cholid
Published: February 2022

Polymer inclusion membrane (PIM) has recently evolved as an alternative separation technique to conventional solvent extraction as it eliminates the use of toxic solvents, reduces separation cost, and simplifies the separation process. PIM is the new generation of a liquid membrane made by casting solution containing liquid phases (extractant and plasticizer/modifier) and base polymers. Despite its better performance and stability in comparison to the previous types of liquid membranes, PIM's robustness for applications on an industrial scale is still considered insufficient mainly due to its limited stability in the long-term separation process. In recent years, different approaches have been devoted to improving the stability of PIM while maintaining its performance. This review aims to summarize and evaluate the current literature on the improvement of the performance of PIMs with particular focus on the use of alternative base polymers, including non-conventional linear homopolymers, copolymers, or cross-linking polymers. Furthermore, more emphasis is given to the composition, fabrication process, and application of the PIMs. Finally, the performance of the PIMs with the alternative base polymers in terms of extraction rate and long-term stability is presented and compared to the PIMs fabricated using their corresponding common base polymers.
Influence of LLDPE-g-MA on Mechanical Properties, Degradation Performance and Water Absorption of Thermoplastic Sago Starch Blends
Authors: Tanjung Denny Akbar , Jamarun Novesar , Arief Syukri , Aziz Hermansyah , Ritonga Ahmad Hafizullah , Isfa Boy
Published: February 2022

The addition of LLDPE-g-MA into the compound of sago starch/LLDPE was studied to improve its mechanical, morphology, degradation performance, and water absorption properties. Thermoplastic Sago Starch was composed of a mixture of sago starch and glycerol. LLDPE-g-MA was prepared in varied concentrations based on the weight of TPSS (0, 6, 8, 10, and 14 wt.%) by reacting LLDPE, maleic anhydride, and benzoyl peroxide using an internal mixer. The results showed an increase in values obtained from mechanical tests, i.e., tensile strength was improved from 0.6902 to 3.6187 N/mm2 with the addition of LLDPE-g-MA at 10 wt.%. The addition also resulted in a 1.44% increment in elongation at break and 251 N/mm2 for Young's Modulus. The surface morphology of the sample demonstrated an excellent interfacial adhesion reaction or LLDPE dispersion over the entire surface of the matrix (starch). The water absorption test continued to decrease with the increase in the LLDPE-g-MA concentration from 53 wt.% (without LLDPE-g-MA) to 14 wt.% at 10 wt.% LLDPE-g-MA concentration. The degradation performance showed that the sample could be degraded under all three conditions for up to 30 days.
Preparation and Photoluminescence Spectra of Organometallic Complexes Containing Nanoparticles as Random Gain Media
Authors: Mahmood Atheer Abdulraheem , Hammadi Oday Atta , Ibraheem Kais Rzaik
Published: February 2022

This work prepared organometallic complexes from the 8-hydroxyquinoline ligand linked to metal ions such as Ba2+, Ca2+, and Zn2+. The effects of metal ion type and adding nanoparticles to the complex solution on the absorption and photoluminescence characteristics of the prepared complexes were introduced. These nanoparticles were added to the prepared complex solutions to act as scattering centers to form random gain media with emission in the visible region of the electromagnetic spectrum. The random gain media made from the Znq2 complex with nanoparticles showed the best characteristics with good chemical and spectroscopic stabilities, high reliability, and reproducibility in addition to the low production cost and reasonably simple requirements.
Improvement of Mechanical, Thermal, and Morphological Properties of Organo-Precipitated Calcium Carbonate Filled LLDPE/Cyclic Natural Rubber Composites
Authors: Ritonga Ahmad Hafizullah , Jamarun Novesar , Arief Syukri , Aziz Hermansyah , Tanjung Denny Akbar , Isfa Boy
Published: February 2022

This study investigates the improvement of the mechanical, thermal, and morphological properties of linear low-density polyethylene (LLDPE)/cyclic natural rubber (CNR) after the addition of organo-precipitated calcium carbonate (O-PCC). The impact on the properties of the LLDPE/CNR/LLDPE-g-OA/O-PCC composites was investigated by a series of empirical experiments. First, the polymer composite was blended in the molten state using an internal mixer with a heating temperature of 160 °C and a rotation speed of 100 rpm. The LLDPE was placed in a chamber of internal mixer until melted, followed by CNR, LLDPE-g-OA, and O-PCC. The polymer composites with an O-PCC concentration of 5% obtained the optimal mechanical properties compared to other variations, with a tensile strength of 17.17 MPa and Young's modulus of 252.68 MPa. The presence of O-PCC resulted in better thermal stability and a change in the melting point temperature of 124 °C. The FTIR spectra of the polymer composite showed the specific characteristics of O-PCC at 872.1 cm–1. The morphology of the polymer composite indicates that the O-PCC is evenly dispersed in the polymer composite.
Density Functional Theory Study of Intermolecular Interactions between Amylum and Cellulose
Authors: Pontoh Raynardthan , Rarisavitri Vania Edita , Yang Christine Charen , Putra Maximilliam Febriand , Anugrah Daru Seto Bagus
Published: February 2022

Amylum is one of the polysaccharides developed into biodegradable plastic bags. However, amylum-based plastics are easily damaged due to their low mechanical strength and hydrophilic properties. Cellulose is used as a support material in amylum-based plastics to increase strength and reduce water damage. This study investigated the molecular interactions between amylum and cellulose computationally. The minimum interaction energy of amylum and cellulose was calculated using in silico modeling using the Density Functional Theory (DFT) method. The B3LYP function and the basis set 6-31++g** were used in the calculations. Simultaneously, D3 Grimme dispersion correction was used as the effect of water solvent in the measures. The results obtained from this study were the interaction energy of amylum and cellulose of –29.8 kcal/mol. The HOMO-LUMO energy gap of the cellulose-amylum complex was lower than cellulose, indicating that the cellulose-amylum complex was more reactive and bonded to each other. Analysis of Natural Bond Orbital (NBO), Quantum Theory Atom in Molecule (QTAIM), Reduced Density Gradient (RDG), Non-covalent Interaction Index (NCI), and Intrinsic Bond Strength Index (IBSI) showed that the cellulose-amylum complex had weak to medium intermolecular bonds. The hydrogen bond at O61···H48 was the strongest in the complex. All data show that cellulose and amylum could interact through non-covalent bonds.
Quien tiene otra lengua vale por dos ...
Authors: Gutiérrez Haces Rosario , Jurado Salinas Martha
Published: February 2022

El Examen de Posesión de la Lengua Española (EPLE) es un instrumento de evaluación que se aplica exclusivamente a personas cuya lengua materna no es el español, para determinar el nivel de dominio que de él tienen como lengua extranjera.

Un extranjero puede llegar a dominar una lengua por distintos medios: la interacción lingüística con hispanohablantes, experiencia comunicativa en países donde se habla español, participación en cursos, autoaprendizaje; o todos ellos. Todas estas experiencias lingüísticas le proporcionan un conocimiento de la lengua y un dominio pragmático que, en una situación de evaluación, le permitirán tener un desempeño "proficiente"; por lo tanto, no se evalúan esfuerzos sino resultados. Los puntos obtenidos en el examen reflejan distintos grados de dominio en cada una de las cuatro habilidades, no hay reprobados (suspendidos), porque se trata de evaluar niveles de lengua, no aptitud para aprobar cursos.

El conjunto de actividades evaluadas en las cuatro habilidades, junto con el nivel de actuación alcanzado en cada una de ellas, conforman un perfil que representa la "proficiencia" o dominio global del sujeto. Con base en este examen, el Centro de Enseñanza para Extranjeros (CEPE), de la Universidad Nacional Autónoma de México (UNAM), otorga una certificación de competencia lingüística que permite contar con un indicador de la capacidad del candidato para desenvolverse lingüísticamente en diversas situaciones de tipo académico, laboral y social.
Prácticas de alimentación infantil de cuidadores principales, conducta alimentaria y estado nutricional de preescolares en Chile
Authors: Rivera Muñoz Leyla , Nazar Gabriela
Published: February 2022

Este estudio tuvo como objetivo conocer la relación entre estado nutricional, prácticas de alimentación del cuidador y conducta alimentaria en preescolares de una comuna del centro sur de Chile. La muestra estuvo compuesta por 249 preescolares y sus cuidadores principales. Se encontró una relación positiva entre índice de masa corporal (IMC) del niño y preocupación por el peso del niño (r=.512  p < 0.01) y entre IMC del niño y alimentación restrictiva del cuidador (r=.202,  p < 0.01). Se encontraron relaciones débiles aunque significativas entre estado nutricional (IMC y % de grasa corporal) y conducta alimentaria en niños. Análisis de correlaciones canónicas indicaron que las variables agrupadas de prácticas de alimentación infantil, se relacionaron positivamente con el estado nutricional del niño (ρ3=0.5425, <0.001**). Adicionalmente, se encontró que la preocupación por el peso del niño mediaba parcialmente la relación entre restricción alimentaria e IMC (IC 95% efecto indirecto "ab" [.02; .13]) y entre restricción y porcentaje de grasa corporal (IC 95% efecto indirecto "ab" [.06; .5])Las actitudes y prácticas de alimentación infantil de los cuidadores principales, particularmente la preocupación por el peso del niño y la restricción en la alimentación juegan un rol crítico en la mantención y manejo de la obesidad en preescolares. Se exploran las implicancias prácticas de estos hallazgos.
Comparación en la búsqueda de sensaciones en jóvenes con conductas alimenticias de riesgo
Authors: Palacios Jorge , Hugo Lea
Published: February 2022

Los objetivos de esta investigación son describir las conductas alimenticias de riesgo, así como comparar la búsqueda de sensaciones entre quienes tienen problemas alimenticios. Se midió las conductas alimentarias de riesgo con el instrumento de Unikel et al, (2004) y la búsqued ade sensaciones con el inventario de Palacios (2015). Se seleccionó una muestra no probabilística de tipo intencional de 1012 jóvenes, entre 14 y 22 (M=16.7) años, de la Ciudad de México. Los resultados mostraron que las mujeres se preocupan más por su peso, vomitan, ayunan, hacen dieta y usan pastillas para perder peso, en comparación con los hombres, estos últimos practican más atracones y tienen una mayor falta de control al comer a diferencia de las mujeres. Quienes presentan alto riesgo alimenticio tienen mayores niveles en la búsqueda de sensaciones. La discusión analiza la utilidad de lo encontrado para prevenir los problemas alimenticios en los jóvenes, así como identificar a la búsqueda de sensaciones como un factor de riesgo del comportamiento alimenticio dentro de los programas de nutrición y salud.
Melanocortinas y su participación en el desarrollo de la obesidad
Authors: López-Alonso Verónica Elsa , Díaz-Urbina Daniel , Escartín-Pérez Rodrigo Erick , Mancilla-Diaz Juan Manuel
Published: February 2022

La obesidad y el sobrepeso son problemas de origen multifactorial, sin embargo la interacción de los factores ambientales, genéticos y conductuales parecen ser la clave en el desarrollo de esta patología. Los receptores de las melanocortinas, particularmente los receptores MC3 (rMC3) y MC4 (rMC4), desempeñan funciones específicas en la regulación de la homeostasis energética, su mutación genética está asociada con el incremento de la adiposidad y el desarrollo de la obesidad. El conocimiento que se tiene de estos receptores y su función aún es limitado, principalmente con respecto a los rMC3 y, aunque los rMC4 se están posicionando como un blanco terapéutico potencial para el tratamiento de la obesidad, la investigación clínica sobre la utilidad de los ligandos de estos receptores es incipiente.
Prevalencia de diversos serovares de Leptospira interrogans en vacas no vacunadas en los estados de Puebla, Tabasco y Veracruz, México
Authors: Rosete Fernández Jorge Víctor , Ríos Utrera Ángel , Zárate Martínez Juan P. , Socci Escatell Guadalupe A. , Fragoso Islas Abraham , Barradas Piña Francisco T. , Olazarán Jenkins Sara , Granados Zurita Lorenzo
Published: February 2022

El objetivo fue comparar las prevalencias de anticuerpos contra diferentes serovares de Leptospira interrogans entre los estados de Puebla, Tabasco y Veracruz, así como entre algunos de sus municipios, y determinar si el estatus sanitario de las vacas influye en su fertilidad. Se tomaron muestras de sangre de 423 vacas (Bos taurus x Bos indicus y Bos indicus) de 24 ranchos de 11 municipios de los estados mencionados. Las prevalencias de los serovares Hardjo e Inifap fueron mayores (P<0.05) en el estado de Veracruz que en el estado de Puebla, pero la prevalencia del serovar Wolffi fue mayor (P<0.05) en el estado de Puebla que en el estado de Veracruz. Las prevalencias de los serovares Hardjo y Palo Alto fueron mayores (P<0.05) en el estado de Tabasco que en el estado de Puebla, pero no hubo diferencias entre estos dos estados en las prevalencias de los serovares Inifap y Wolffi (P>0.05). El número de serovares en el estado de Veracruz fue mayor (P<0.05) que en el estado de Puebla, pero el número de serovares en Tabasco fue intermedio; además, existió una variación importante (P<0.05) entre municipios y entre ranchos en la prevalencia de los diferentes serovares. Globalmente, el serovar con mayor frecuencia fue Inifap, mientras que el serovar con menor frecuencia fue Tarassovi. El estatus zoosanitario de las vacas no influyó la tasa de gestación (P>0.05); sin embargo, se recomienda la vacunación del ganado contra Leptospira interrogans, con el fin de disminuir los riesgos asociados con esta bacteria en bovinos y humanos.
Digestibilidad ileal estandarizada de la proteína y aminoácidos de la pasta de ajonjolí en cerdos en crecimiento
Authors: Reis de Souza Tércia Cesária , Aguilera Barreyro Araceli , Mariscal Landín Gerardo
Published: February 2022

Para determinar la digestibilidad ileal aparente (DIA) y estandarizada (DIE) de los aminoácidos de pasta de ajonjolí (PA), se utilizaron 10 cerdos de 78.6 ± 5.2 kg, alojados en jaulas metabólicas; localizadas en una sala con temperatura controlada (19 a 22 °C). A los cerdos se les implantó una cánula “T” en íleon y se alimentaron dos veces al día, a 2.5 veces su requerimiento de energía digestible de mantenimiento (110 kcal por kg de PV0.75). Se elaboraron dos dietas con 160 g de PC/kg de alimento: una con PA y otra con pasta de soya (PS). Los resultados muestran que la DIA de los siguientes aminoácidos fue superior en la PA que en la PS: arginina (P<0.0001) 7.3 unidades; alanina, ácido glutámico, glicina, metionina y valina fue en promedio 6.8 unidades mayor (P<0.01); cisteína fue mayor en 11.5 unidades (P <0.05). Contrariamente la DIA de prolina (P<0.0001), leucina (P<0.01) y lisina (P<0.05) fueron inferiores en 21.9, 2.8 y 2.5 unidades respectivamente en la PA que en la PS. La DIE de arginina (P<0.0001) fue 6.7 % superior; valina (P<0.001) 10.6 % mayor, alanina, ácido glutámico, glicina y treonina (P<0.01) fue superior en promedio en 6.4 %; y de cisteína, histidina, isoleucina, y tirosina (P<0.05) fue superior en 7.45 % en la PA que en la PS. La DIE de prolina (P<0.01) y leucina (P<0.05) fueron inferiores en 4.7 y 2.1 en la PA que en PS. Se concluye que la PA es una buena fuente de aminoácidos digestibles para la alimentación del cerdo.
Variabilidad en el contenido de polifenoles, actividad biológica y antihelmíntica de extractos metanol:agua de las hojas de Gymnopodium floribundum Rolfe
Authors: Ortíz-Ocampo Guadalupe Isabel , Sandoval-Castro Carlos Alfredo , Mancilla-Montelongo Gabriela , Castañeda-Ramírez Gloria Sarahi , Chan Pérez José Israel , Capetillo Leal Concepción , Torres-Acosta Juan Felipe de Jesús
Published: February 2022

Se determinó el efecto del mes de cosecha y edad de las hojas de Gymnopodium floribundum sobre el contenido de compuestos polifenólicos (fenoles totales (FT), taninos totales (TT) y taninos condensados (TC)) de extractos metanol:agua. Además, se determinó la actividad biológica de los polifenoles medida como la capacidad de precipitar proteína (PP), inhibir la eclosión de huevos (EH), y el desenvaine larval (IDL) de Haemonchus contortus. Se cosecharon hojas de G. floribundum en cuatro meses del año: diciembre, marzo, junio y septiembre. Se obtuvieron 24 extractos metanol:agua (70:30), 12 producidos de hojas de edad variada (EV) y 12 de hojas de 90 días (E90). Todos los extractos ocasionaron similar PP independientemente de edad y mes de cosecha. La inhibición de la EH solo fue significativa para el extracto EV de diciembre (CE50 = 374.4 μg/ml; P<0.05). Los extractos de hojas E90 mostraron una CE50 > 1500 μg/ml en diciembre, junio y septiembre. Aunque todos los extractos inhibieron el desenvaine larval (IDL), la menor CE50 fue la del extracto de hojas EV de junio (CE50 = 80.4 μg/ml; P<0.05). La incubación de extractos con polivinilpolipirrolidona (PVPP) limitó la IDL (P<0.05), pero los polifenoles solo explicaron parte de esa actividad. En conclusión, el contenido de TC de los extractos de hojas de G. floribundum depende de su edad y mes de cosecha. Los polifenoles mostraron actividad de PP y se asociaron parcialmente con la IDL. Sin embargo, los polifenoles no explican la actividad contra huevos de H. contortus.
Exploring quantitative relationship through area conservation activity
Authors: Sari Puspita , Ng Swee Fong
Published: February 2022

Algebra as a study of quantitative relationship is one of four conceptions of school algebra which serves as a foundation for the concept of function. However, there is still a lack of attention to this particular relationship, especially in early algebraic reasoning. This study aims to investigate how the aspect of quantitative relationship in early algebra can be explored through area conservation activities. Understanding area conservation is said to be fundamental in developing the concept of area measurement. In this study, a ten-year old pupil was observed during her involvement while comparing area of two polygons that can be decomposed into equivalent triangles. Data for this study include the pupil’s written artefacts, and video recordings of the activities and interviews. Findings from this study show that the area conservation activity has the potential to build the notion of quantitative relationships in early algebra. The quantitative relationship between the unit of measurement and the result of measurement of a shape can also be explored, that is, the smaller the unit of measurement, the larger the result of measurement. Hence, this study can provide a groundwork for further studies in the relation between quantitative relationship in algebra and area conservation in geometry at the elementary school level.
RELATIONAL STATISTICAL CONCEPT AND RANGE
Authors: Aristov V. V
Published: February 2022

This paper considers the introduction of relational space and time with the specification of simultaneity associated with the unity of the light signal for the whole world. In accordance with the ideas of some physicists, a concept is proposed, in fact, of absolute time, interpreted in a new way and consistent with the theory of action at a distance. This is ensured by the invariance of the increment of the relational time relative to arbitrary spatial shifts. This eliminates the ambiguity of the theory when using retarded and advanced potentials. The transition of these constructions to the description in the theory of relativity with the help of appropriate transformations is discussed.
MACH’S PRINCIPLE AND MICROSEISM SPECTRUM
Authors: Panchelyuga V. A , Panchelyuga M. S
Published: February 2022

The paper discusses possible experimental consequences of the assumption that physical realization of the Mach’s principle can be associated with some oscillatory process between gravitating masses. It is noted that in the case expected phenomenological picture turns out to be close to that obtained in the course of studies of the Earth microseismic noise spectra by V.A. Dubrovsky in 1987-1993. The article describes Dubrovsky’s experiments as well as a brief history of the laboratory in which they were performed. Possible directions for further experimental research are considered.
MACROSCOPIC FLUCTUATIONS PHENOMENON
Authors: Panchelyuga V. A , Kolombet V. A , Panchelyuga M. S
Published: February 2022

The following brief review considers the history of discovery and main stages of investigations of the macroscopic fluctuations phenomenon, which were the work of life of Simon E. Shnoll. The works considered in this article are the first in world literature to study the universal laws revealed in the course of studying the properties of fluctuations in processes of various nature. Brief descriptions of the main experiments and the results obtained are given.
Neuroeconomía y toma de decisiones financieras: aproximación desde una revisión sistemática de literatura
Authors: Osorio-Barreto Daniel , Landínez-Martínez Daniel Alfredo , Chica-Mesa Juan Carlos
Published: February 2022

El estudio de la toma de decisiones financieras es un campo emergente de investigación básica y aplicada. Frente a este panorama, los avances en el conocimiento del funcionamiento cognitivo permiten generar la pregunta de cómo, desde la neuroeconomía, se analiza la toma de decisiones financieras. En este sentido, el presente trabajo tuvo como objetivo principal analizar estudios relacionados sobre neuroeconomía, haciendo énfasis en aquellos enfocados a comprender la toma de decisiones financieras. Para ello se realizó una revisión sistemática de literatura soportada en la base de datos Web of Science para identificar las principales referencias sobre el tema, teniendo en cuenta su tipo de publicación, autores, área de conocimiento, palabras clave, enfoque e instrumentos utilizados. Con base en la estrategia metodológica propuesta, se identificaron diferentes trabajos que han analizado la toma de decisiones financieras desde otras perspectivas: riesgo financiero, finanzas personales, decisiones de inversión, entre otros, siendo el diseño de experimentos, apoyado por imágenes diagnósticas, los estudios de mayor impacto. Finalmente, la revisión sistemática encuentra que los estudios de alto impacto se ubican en Estados Unidos y Europa con una ampliación a lo largo del tiempo de técnicas empíricas y experimentales para comprender el proceso de toma de decisiones financieras; adicionalmente, esta revisión pretende ser referente de subsiguientes investigaciones relacionadas en América Latina.
Inovasi Pembelajaran Mata Kuliah Pembelajaran Mikro Berbasis Model PjBL (Project Based Learning) Untuk Meningkatkan Kreativitas Mahasiswa
Authors: Sadikin Ali , Yelianti Upik
Published: February 2022

Good learning is innovative learning following the times. To support the vision and mission of the Jambi Smart University, changes will be made to the micro learning courses in the biology education study program. The change is learning innovation using the PjBL (Project Based Learning) learning model. With this PjBL model, learning tools, teaching materials, and evaluation instruments will be developed to increase student creativity in the Biology Education Study Program, FKIP Jambi University. The research method uses classroom action research (CAR) which is planned for 2 cycles. The stages include: planning, implementation and observation, and reflection. At the planning stage, a small discussion was held between the teaching team and agreed on the implementation of PJBL. At the implementation stage, students make a project in the form of a learning video containing teaching skills. At the observation stage: students are asked to present their project in front of the class virtually, then lecturers and colleagues observe and provide feedback. Finally, the reflection stage, input and comments from lecturers and colleagues are recorded and project improvements are made. In the first cycle, the results of the observation were 55% in the pretty good category. Then improvements were made from input and comments from lecturers and colleagues, so that in the second cycle there was an increase in student creativity at a score of 80% in the good category.
Pembelajaran yang baik adalah pembelajaran yang inovatif mengikuti perkembangan zaman. Untuk mendukung visi dan misi Universitas Jambi smart maka mata kuliah pembelajaran mikro di prodi pendidikan biologi akan diadakan perubahan. Perubahan itu adalah inovasi pembelajaran menggunakan model pembelajaran PjBL (Project Based Learning). Dengan model PjBL ini akan dikembangkan perangkat pembelajaran, bahan ajar, dan instrument evaluasi untuk meningkatkan kreativitas mahasiswa di Prodi Pendidikan Biologi FKIP Universitas Jambi. Metode penelitian mengunakan penelitian tindakan kelas (PTK) yang direncanakan 2 siklus. Adapun tahapnnya meliputi: perencanaan, pelaksanaan dan observasi, dan refleksi. Pada tahap perencanaan dilakukan diskusi kecil antar tim pengajar dan disepakati penerapan PJBL. Pada tahap pelaksanaan mahasiswa membuat proyek berupa video pembelajaran yang berisi keterampilan mengajar. Pada tahap pengamatan: mahasiswa diminta untuk mempresentasikan proyeknya tersebut didepan kelas secara virtual, kemudian dosen dan teman sejawat mengamati dan memberikan umpan balik. Terakhir tahap refleksi masukan dan komentar dari dosen dan teman sejawat dicatat dan dilakukan perbaikan proyek. Pada siklus 1 diperoleh hasil pengamatan 55 % kategori cukup baik. Lalu diadakan perbaikan dari masukan dan komentar dari dosen dan teman sejawat maka pada siklus II mengalami kenaikan kreativitas mahasiswa pada skor 80 % dalam kategori baik.
Perbedaan Hasil Belajar Kognitif Siswa Pada Pembelajaran Daring Melalui Google Classroom dan Whatsapp Mesenger Di SMP Negeri 4 Bengkulu Tengah
Authors: Alianto Alianto , Hasan R , Irwandi Irwandi
Published: February 2022

Cognitive learning outcomes of students in learning biology are still low. This study aims to determine the differences in students' cognitive learning outcomes in online learning through google classroom and whatsapp messenger at SMP Negeri 4 Bengkulu Tengah. The research was carried out in January-March 2021, using pre-experimental research methods, pre-experimental one group pre-test-post-test design. The population is class VIII SMPN 4 Bengkulu Tengah, totaling 86 students, with a sample of 43 students. Collecting data with test questions of students' cognitive learning outcomes. The results showed that there was no difference between students' cognitive learning outcomes in online learning through google classroom and whatsapp messenger at SMPN 4 Bengkulu Tengah.
Abstrak. Hasil belajar kognitif siswa dalam pembelajaran biologi masih rendah. Penelitian ini bertujuan untuk mengetahui perbedaan hasil belajar kognitif  siswa pada pemebelajaran daring melalui google classroom   dan whatsapp mesenger Di SMP Negeri 4 Bengkulu Tengah. Penelitian dilaksanakan pada bulan Januari-Maret 2021, menggunakan metode penelitian pra eksperimen, desain pre-eksperiment one group pre-test-post-test. Populasi adalah siswa kelas VIII SMPN 4 Bengkulu Tengah yang berjumlah 86 siswa, dengan sampel 43 siswa.  Pengumpulan data dengan soal tes hasil belajar kognitif siswa. Hasil penelitian menunjukkan bahwa tidak terdapat perbedaan antara hasil belajar kognitif siswa pada pembelajaran daring melaui google classroom dan  whatsapp mesenger Di SMPN 4 Bengkulu Tengah.
Pengembangan LKPD Berbasis Inkuiri Terbimbing Pada Materi Pokok Bahasan Invertebrata Untuk Siswa Kelas X SMA
Authors: Syarief Ramadhani Ahmad , Asra Revis , Anggereini Evita
Published: February 2022

This study aims to obtain the final product in the form of LKPD based on Guided Inquiry for Invertebrates. The development model used in this research is the Plomp development model which consists of three stages of development. The LKPD that has been produced is then validated by design experts and material experts to determine the suitability of the products developed. The LKPD that has been revised and declared feasible by the expert (validator) is then tested in class X high school students and biology teachers. Based on the assessment of design experts, it was found that the LKPD design was very feasible, with a score of 56 or 87.5%. Meanwhile, from the results of the material expert assessment, it was found that the material on the LKPD was very feasible, with a score of 104 or 81.25%. The results of individual trials and small group trials showed that the LKPD had a very practical level of practicality, with a practicality score of 38.33 and 39.5, respectively. Likewise, the results of the practicality assessment by the teacher showed that the LKPD has a very practical level of practicality, with a practicality score of 36. Thus, it can be concluded that the LKPD based on Guided Inquiry on Invertebrate Subject Matter is very feasible and practical to be used in learning activities students in class X of Senior High School.
Abstrak. Penelitian ini bertujuan mendapatkan produk akhir berupa LKPD berbasis Inkuiri Terbimbing Materi Pokok Bahasan Invertebrata. Model pengembangan yang digunakan dalam penelitian ini adalah model pengembangan Plomp yang terdiri dari tiga tahapan pengembangan. LKPD yang telah dihasilkan kemudian divalidasi oleh ahli desain dan ahli materi untuk mengetahui kesesuaian dari produk yang dikembangkan. LKPD yang telah direvisi dan dinyatakan layak oleh ahli (validator) kemudian diujicobakan kepada siswa kelas X SMA dan guru mata pelajaran biologi. Berdasarkan penilaian ahli desain, didapatkan bahwa desain LKPD berada sudah sangat layak, dengan perolehan skor sebesar 56 atau 87,5%. Sementara dari hasil penilaian ahli materi, didapatkan bahwa materi pada LKPD sudah sangat layak, dengan perolehan skor sebesar104 atau 81,25%. Hasil ujicoba perorangan dan ujicoba kelompok kecil didapatkan bahwa LKPD memiliki tingkat kepraktisan sangat praktis, dengan perolehan skor praktikalitas masing-masing sebesar 38,33 dan 39,5. Begitupula hasil penilaian praktikalitas oleh guru didapatkan bahwa LKPD memiliki tingkat kepraktisan sangat praktis, dengan perolehan skor praktikalitas sebesar 36. Dengan demikian dapat disimpulkan bahwa LKPD berbasis Inkuiri Terbimbing Materi Pokok Bahasan Invertebrata sudah sangat layak dan praktis untuk digunakan dalam kegiatan pembelajaran pada siswa kelas X SMA.
Pengaruh Model Socio-Scientific Issue Terhadap Keterampilan Memecahkan Masalah Menggunakan Aplikasi Powtoon pada Materi Perubahan Lingkungan
Authors: Hanifah Elsa , Setiono Setiono , Nuranti Gina
Published: February 2022

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Mulheres no boxe
Authors: Mariante Neto Flavio Py , Wenetz Ileana
Published: February 2022

Buscamos destacar o quanto as noções tradicionais de masculinidade e feminilidade (e heterossexismo) afetam a prática do boxe. Com esse objetivo e por meio de um estudo etnográfico realizado em uma academia, refletimos sobre a participação de mulheres nas aulas de boxe, identificando as diferenças entre a prática de homens e de mulheres. Observamos uma “naturalização” do que tradicionalmente se considera masculino (virilidade, agressividade etc.) e feminino (comedimento, sensibilidade etc.), mas que não por isso deixam de ser reconfigurados. Os resultados foram organizados em três categorias: sobre a prática no espaço da academia; sobre a separação de gênero; e sobre o atravessamento de fronteiras de gênero, que é quando a mulher, por objetivos relacionados à luta, tende a ser masculinizada. Também são tensionados os sentidos atribuídos à prática do boxe, no qual a própria sexualidade das atletas é questionada, demarcando a heterossexualidade como norma.
Práticas corporais como conceito?
Authors: Manske George Saliba
Published: February 2022

A partir de uma perspectiva pós-estruturalista se propõe a problematizar o termo Práticas Corporais como conceito para o campo da Educação Física. Percorrem-se na literatura estudos, pesquisas e argumentos que demonstram sua heterogeneidade, indefinição e polissemia. Apresenta subsídios científicos e linguísticos para embasar que Práticas Corporais não possui especificidade, estabilidade e densidade suficiente para ser considerado como tal, desde perspectivas estruturalistas e/ou científicas. No entanto, se considerar compreensões inspiradas na filosofia da diferença e no pós-estruturalismo, Práticas Corporais tem potência para ser considerado um conceito para o campo.
The impact of personality and entrepreneurship education on entrepreneurial intention
Authors: Tsaknis Panagiotis A. , Sahinidis Alexandros G. , Xanthopoulou Panagiota I. , Vassiliou Evangelos E.
Published: February 2022

The purpose of this paper is to examine the role of entrepreneurship education on entrepreneurial intention, the personality traits that can affect entrepreneurial intention, and the traits that cause positive changes in entrepreneurial intention after the intervention of an entrepreneurship program. In order to measure the changes in entrepreneurial intention levels, two questionnaires (pretest-posttest group design) were used. Both questionnaires were completed by 202 business students, studying at a public university based in Athens, Greece. Our analysis indicates that the personality traits that affect entrepreneurial intention levels are openness, extraversion, and risk aversion. Using paired samples test we found an increase in entrepreneurial intention following the course attendance. Cluster analysis indicated that students with higher levels of extraversion, openness, conscientiousness, and lower levels of risk aversion and neuroticism demonstrated statistically significant and higher means change in entrepreneurial intention levels (at the end of the entrepreneurship program). The literature examining the personality traits of individuals who benefit most from entrepreneurship education has been developing in recent years. However, the studies that refer to this topic are scant (Burch, Murphy, & Tocher, 2019; Israr, 2017). The findings of this paper emphasize the need for further investigation of the results in different contexts in order to validate them.