Search

Copyright of Retos: Nuevas Perspectivas de Educación Física, Deporte y Recreación is the property of Federacion Espanola de Asociaciones de Docentes de Educacion Fisica and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This article presents a low-cost photometer for experimental teaching designed to determine hexavalent chromium in aqueous solutions based on the detection of yellow chromate ions with ultraviolet light at 373 nm. This procedure replaces the colorimetric method that uses a spectrophotometer for the detection of the red-violet 1.5-diphenylcarbazide complex at 540 nm. To demonstrate the operation of the photometer, the Beer-Lambert law was evaluated using the linear regression technique, and the absorbance values obtained by the photometer were compared with those of a Shimadzu UV-2600 series UV-Vis spectrophotometer in five samples of hexavalent chromium in the range of 1 - 25 mg L-1. The experimental results demonstrated the linearity required by the Beer-Lambert law with a determination coefficient of 0.9988, and similarity between both analytical instruments with a relationship of 1.0041 between the absorbance values with a determination coefficient of 0.9993. In conclusion, the low-cost photometer is an excellent proposal for teaching the Beer-Lambert law in the classroom because it reduces the formation of waste, and dispenses with the reagents of the colorimetric method. [ABSTRACT FROM AUTHOR]

Copyright of Tecnología y Ciencias del Agua is the property of Instituto Mexicano de Tecnologia del Agua (IMTA) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The present investigation was carried out with the objective of evaluating Trichoderma asperellum in the control of Fusarium sp. in genotypes of Passifloras, to reduce the wilt in the neck of the stem in Santo Domingo. A Complete Randomized Design (CRD) was implemented for this purpose, with three treatments, T1: Passion fruit (Passiflora edulis f. flavicarpa), T2: Cholupa (Passiflora maliformis L.) and T3: Granadilla (Passiflora ligularis), evaluating the variables: mortality percentage %, tolerance to fusarium %, days to affectation (days), number of diseased plants per week (plt/wk), incubation period of the fungus (days), disease severity (%). The results show that the passion fruit genotype (T2) showed total tolerance to the disease (100%), that is, all passion fruit plants treated with T. asperellum resisted infection by Fusarium sp. The severity of the Passifloras genotypes treated with T. asperellum to control Fusarium sp. was significant (p<0.05), and at the end of the trial (week 6), severe wilt was observed in the Granadilla, while in the Maracuya a significant improvement was obtained, almost returning to the absence of symptoms, with respect to the Cholupa an improvement in symptoms was obtained, returning to moderate wilt. The genotype Granadilla (T1), presented the highest percentage of mortality, reaching 5%, followed by Cholupa (T3), with an intermediate percentage of mortality, around 3.33% and finally, Maracuya (T2), which did not register mortality in this treatment, therefore, the best treatment. [ABSTRACT FROM AUTHOR]

This research analyzes the process of a community translation conducted by a group of Hispanic-American fans of a book from the young-adult fantasy saga Shadowhunters. The Shadowhunters' fandom criticized the Spanish translation of a transnational publishing house for having altered the content and delayed the translation. Faced with the poor reception of the translated product, some members of the fandom gathered on Facebook to generate a translation that would satisfy their community. This process is reconstructed through digital ethnography. It describes how the group of translators generated coordination spaces for the team as well as a meeting place with the community, which would function as spaces for literacy. In said spaces, a translation method consistent with the social objectives of the fandom was built by performing a rapid translation through a process with simultaneous stages, encouraging member learning, maintaining motivation, and commitment through affective communication. [ABSTRACT FROM AUTHOR]

Copyright of Revista de Investigación e Innovación Agropecuaria y de Recursos Naturales is the property of Revista de Investigacion e Innovacion Agropecuaria y de Recursos Naturales RIIARn and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Entramado is the property of Universidad Libre Seccional Cali and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This study proposes three activities for a multidisciplinary laboratory practice with university students of advanced cycles, these didactic activities seek to develop scientific curiosity through the construction of an analytical instrument. To this end, students assemble a microbalance with low-cost frequency meters by replacing the oscilloscope with smartphones, DIY frequency counters, and Arduino development boards, for the educational purpose of illustrating the piezoelectric properties of quartz crystal and its relationship with the resonant frequency by experiential learning. [ABSTRACT FROM AUTHOR]

Copyright of Cuadernos.info is the property of Pontificia Universidad Catolica de Chile, Facultad de Comunicaciones and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista de Investigación en Salud VIVE is the property of Revista de Investigacion en Salud VIVE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of El Profesional de la Información is the property of EPI SCP and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista CES Derecho is the property of Universidad CES and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In the following narrative review, original articles and review articles were collected from Pubmed, LILACS, ScienceDirect, SciELO, Scopus, and Google Scholar in the period between January 2013 and August 2023. Were selected 32 open access type published articles, in Spanish and English. Digital and conventional impressions in children are compared according to time, precision, handling, comfort, and acceptance. According to the evaluation criteria, it is concluded from the literature that digital impressions are the preferred choice in children. Therefore, taking digital impressions is favorable in terms of time, precision, handling, comfort and acceptance over conventional impressions in children. [ABSTRACT FROM AUTHOR]

We report the anesthetic management of a parturient with Takayasu arteritis and several comorbidities scheduled for elective cesarean section with the authorization of the institutional ethics committee. A twosegment combined spinal-epidural technique was used to provide anesthesia with close control of invasive arterial pressure and the use of Norepinephrine endovenous infusion. Likewise, a literature review of the two-segment combined technique for cesarean section in pregnant women with this disease was performed. [ABSTRACT FROM AUTHOR]

Copyright of Avances en Odontoestomatologia is the property of Ediciones Avances SL and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of UCV Hacer is the property of UCV Hacer and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Mendive - Revista de Educacion is the property of Universidad de Pinar del Rio and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Médica Peruana is the property of Colegio Medico del Peru and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Question (1669-6581) is the property of Universidad Nacional de La Plata and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The primary objective of this research study is to assess reading mediation practices and perceptions among teachers and fourth-grade students. In-depth interviews are conducted at three public schools from Arequipa (Perú). Thematic analysis is used for data processing while information systematization is attained by applying the content analysis technique. The results shows that read-aloud, vocation, and self-regulation conducted by teachers is positive, but insufficient for students to achieve reading comprehension. Teachers assign greater importance to reading-aloud. The teachers' mediation profile is basic, with limited dialogue, and lacks exercising higher order cognitive skills such as making inferences. It is concluded that students make few questions about their readings and that they generate scarce interpretations to critically comprehend texts. [ABSTRACT FROM AUTHOR]

Copyright of Revista Venezolana de Gerencia (RVG) is the property of Revista de Filosofia-Universidad del Zulia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In the operation of power systems, voltage and current harmonics can arise due to loads such as steel plants, cement factories, or the effect of wind and solar generation. Electric Arc Furnaces (EAFs) are among the leading causes of voltage harmonics and fluctuations in the steel industry. These voltage harmonics can significantly increase the levels of current harmonics in the network, resulting in active power losses and equipment damage. Conversely, precise models of EAFs are not available for conducting harmonic studies in power systems due to their highly chaotic behavior. This research proposes a short- and medium-term harmonic analysis methodology based on Ayrton's simplified mathematical model for representing the EAF. This methodology is applied to an actual study case of a steel plant connected to the Bolivian power system. Quality of energy indices, and total and individual harmonic distortion rates were calculated, and compliance with the considerations of the IEEE 519-2022 standard was verified. The results were compared with specialized harmonic measurements at high-voltage nodes of the Bolivian power system, evidenced by the significant contribution of harmonics in the network, mainly the fifth, seventh, eleventh, and thirteenth-order harmonics. Thus, the importance of complying with regulatory standards regarding energy quality to avoid affecting network users is demonstrated. [ABSTRACT FROM AUTHOR]

The objective of this research was to analyze the conceptions and meanings of the pedagogy of love in teachers of UGEL schools. The design used was descriptive, with a population of 200 teachers of regular basic education, and the instrument used was a survey on the pedagogy of love to determine the knowledge that teachers had about this conception. The results showed that the majority of female teachers (45%) had more knowledge and practice on the pedagogy of love than male teachers, with only 20%. In conclusion, it was found that the teachers who used this pedagogy were located between the stages of adolescence and maturity. [ABSTRACT FROM AUTHOR]

The objective of this research was to identify the levels of stress, anxiety and depression, and posttraumatic stress in a Mexican sample of people with some comorbidity, who have an informal job or present some deprivation. We worked under a quantitative methodology with a descriptive cross-sectional design, consisting of 1174 people aged 18 to 85 years (Mean = 36.4, SD = 12.4). The sample was non-probabilistic with 85.3% women and 14.7% men. The Impact of Event Scale-Revised (IES-R) and the Stress, Anxiety and Depression Scale (DASS-21) were used. High levels of post-traumatic stress were found in people presenting some deficiency in relation to the emotional states of stress, anxiety and depression. The three groups showed high levels of anxiety, with a higher percentage in the group with some deficiency. These results show the vulnerability in the mental health status of the population studied. [ABSTRACT FROM AUTHOR]

Copyright of Revista Ciencias de la Salud is the property of Colegio Mayor de Nuestra Senora del Rosario and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Cubana de Ciencias Informáticas is the property of Universidad de las Ciencias Informaticas (UCI) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Medica Herediana is the property of Universidad Peruana Cayetano Heredia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Colombiana de Psiquiatria is the property of Asociacion Colombiana de Psiquiatria and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Investigacion y Amazonia is the property of Investigacion y Amazonia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Biológico Agropecuaria Tuxpan is the property of Revista Biologico Agropecuaria Tuxpan and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Avances en Odontoestomatologia is the property of Ediciones Avances SL and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Politai. Revista de Ciencia Política is the property of Asociacion Civil Politai and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)