bluuebunny/crossref_metadata_2025 huggingface dataset:
Pemanfaatan Media Sosial untuk Mendukung Kegiatan Penyuluhan Pertanian di Kabupaten Minahasa Provinsi Sulawesi Utara
Authors: Suratini Suratini , Muljono Pudji , Tri Wibowo Cahyono
Published: May 2021

The rapid development of communication technology requires agricultural extension workers to be able to use social media in disseminating agricultural information. This study aims to describe the use of social media, analyze the factors associated with the level of social media utilization and analyze the management of agricultural information and its relationship with the use of social media. The study used the observation method to select respondents through the census.The level of social media utilization by respondents was measured by the frequency and duration in using Facebook, WhatsApp, Youtube and Instagram . The frequency of using social media is relatively high for Facebook and WhatsApp. The overall duration of accessing social media is relatively low. Factors that are significantly related to the utilization level of social media are the characteristics of  extension workers  (level of education and the availability of communication technology tools), perception of  extension workers  (ease of acces to information), information needs of  extension workers  (climate and capital) and motivation of  extension workers (increasing knowledge and insight). Almost all extension workers manage information obtained from social media to be distributed to farmers.
Pengetahuan sebagai Mediasi Intensitas Penyuluhan Terhadap Persepsi Peternak pada Penggunaan Serbuk Daun Nangka sebagai Obat Cacing pada Domba
Authors: Nurdayati Nurdayati , Purwo Widiarso Budi , Eka Pratiwi Dhestalia , Mentari Putri Wijaya Fabiana
Published: May 2021

The study was carried out in Banter Hamlet, Gumelem Village, Pakis District, Magelang District. The purpose is to determine the farmers' perceptions about the prevention of Haemonchosis using jackfruit leaves powder and to determine the effect of the counseling intensity and the knowledge level of farmers on farmers' perceptions. A sampling of 32 breeders from Ngudi Rejeki 1 Farmer Group was carried out using census method. Data collection techniques were carried out by observation and interview methods. This study was conducted by descriptive analysis using Likert scale to determine the perception level and path analysis to see the perception effect as an endogenous variable with the counseling intensity and knowledge level as exogenous variables. Based on the study, it can be concluded that the descriptive analysis shows farmers' perceptions about the prevention of Haemonchosis using jackfruit leaves powder is in the agree category. The path analysis shows that the counseling intensity does not have a direct effect on perceptions while indirectly from the counseling intensity through the knowledge level significantly influence the perception, so that the knowledge can be said to mediate the counseling intensity on the perception.
TRABALHO E RENDA NO CONTEXTO DA PANDEMIA DE COVID-19 NO BRASIL
Authors: Araújo Iara Soares de , Brandão Viviane Bernadeth Gandra
Published: May 2021

Este trabalho consiste em analisar o trabalho e a renda no contexto da Pandemia de Covid-19 no Brasil. O termo Pandemia é utilizado para identificar uma epidemia que se disseminou geograficamente, iniciando em um país e espalhando para o mundo, como é o caso da Covid-19, causada pelo corona vírus 2, da Síndrome respiratória aguda grave SARS-Cov 2. Nesse sentido, esta pandemia trouxe consequências à saúde, educação, sociedade, cultura, trabalho entre outros. A escolha para análise do trabalho e renda perpassa pelo aumento do desemprego e a precarização do trabalho neste período. Em relação à metodologia, trata-se de uma pesquisa bibliográfica e documental com caráter qualitativo, tem como base principal dados da Pesquisa Nacional por Amostra de Domicílios – PNAD – Covid-19, realizada pelo Instituto Brasileiro de Geografia e Estatística – IBGE – em 2020, no que tange ao trabalho, e publicada em sua página eletrônica, e pesquisa de artigos científicos publicados em periódicos e livros que discutem a temática proposta. Diante da investigação realizada, constata-se que a pandemia impactou negativamente as relações de trabalho, evidenciando a precarização do trabalho já existente, e afetou principalmente e diretamente os trabalhadores informais que se encontram à margem da proteção social.
Implementation of Selective Harmonics Elimination for Single Phase Inverter using Arduino and Simulink MATLAB model
Authors: Hussein Taha A. , Sheet Ibrahim I.
Published: May 2021

This paper presents Arduino controller implementation and Simulink model in MATLAB to eliminate a selected number of harmonics in a single phase inverter. A MATLAB code is written to solve the nonlinear trigonometric that arises in the Fourier analysis of the output of the inverter. Newton’s Raphson method is adopted to find the triggering angles for the four electronic switches in the inverter. All possible combinations of these triggering instants are then computed for period of one cycle. To validate the model a practical set using Arduino controller is implemented. Frequency spectrums of the output of the inverter for both the Simulink model and the practical set are shown for the elimination of certain selected harmonics. Any other selected harmonics can be eliminated using the proposed model.
Flexural Strength of Steel Fiber Ultra High Strength Concrete Beams under Static and Repeated Loads
Authors: Alsaffar Nadiya Sadeek , Al Sulaifanie Bayar J. , Mahmood Mohamed N.
Published: May 2021

The goal of the present work is to study the performance of Ultra High Strength Con-crete (UHSC) beams in flexure under static and repeated loads. The main considered variables are the main reinforcement ratios which are (0.0129, 0.0204, and 0.0323), and the method of applying load. For each reinforcement ratio two beams were casted, one of them was tested under four points static load and the other one under repeated load up to failure. The behavioral characteristics of Ultra High Strength Concrete dominantly depends upon its load history, for this purpose experimental investigation of the behavior of (UHSC) beams under load history of repeated cycles is performed as well as that it is compared with the behavior under static load. The average cube compressive strength of the UHSC used in casting the beams was as high as (124 N/mm2). The load deflection curves, first cracks and failure loads, crack pattern, and concrete strain distribution over the depth of the beams were presented.
S- to I- to A-type magmatic cycles in granitic terranes are not globally recurring progressions. The cases of the Cape Granite Suite of Southern Africa and central Victoria in southeastern Australia
Authors: Clemens J.D. , Stevens G.
Published: May 2021

Recurring progression from S- to I- to A-type granites has been proposed for a subset of granitic rocks in eastern Australia. The wider applicability and the validity of this idea is explored using the Cape Granite Suite (CGS) of South Africa and the granitic and silicic volcanic rocks of central Victoria, in southeastern Australia. Within the CGS there is presently little justification for the notion that there is a clear temporal progression from early S-type, through I-type to late A-type magmatism. The I- and S-type rocks are certainly spatially separated. However, apart from a single slightly older pluton (the Hoedjiespunt Granite) there is no indication that the S- and I-type granites are temporally distinct. One dated A-type granitic sample and a syenite have poorly constrained dates that overlap with those of the youngest S-type granites. In central Victoria, the granitic magma types display neither a spatial separation nor a temporal progression from one type to another. All magma varieties are present together and were emplaced within a far narrower time window than in the CGS. Thus, a progression may or may not exist in a particular region, and the occurrence of such a progression does not hold true even in a part of southeastern Australia, which afforded the type example. Thus, the idea that, globally, there should be a progression from S- to I- to A-type magmatism is unjustified. The critical factor in determining the temporal relationship between granitic magmas of different types is probably the compositional structure of the deep crust in a particular region, a reflection of how the individual orogen was assembled. In turn, this must reflect significant differences in the tectonic settings.
The surface geology of the Prince Edward Islands: refined spatial data and call for geoconservation
Authors: Rudolph E.M. , Hedding D.W. , Nel W.
Published: May 2021

Volcanological maps of the sub-Antarctic Prince Edward Islands were first published in 1968, with a revised surface geology map of Marion Island produced in 2006. These maps have been widely used in terrestrial studies on the Prince Edward Islands but they have limitations in spatial accuracy and detail. Using high-resolution satellite imagery and digital elevation data, more spatially accurate data for both Prince Edward and Marion Island’s surface geology are presented here. In particular, Marion Island’s volcanology on the western coast, including the 1980s lava flow, and the newly exposed Central Highland following the disappearance of extensive ice and snow cover is mapped with greater detail and verified through field observations. The spatial data are downloadable as ESRI layer packages, which can assist in future investigations of island biotic-abiotic processes and interactions and enable improvements in spatial modelling. In addition, this paper highlights geological features and specimens from the Prince Edward Islands as unique examples of geodiversity in a South African context. An overview of these features are provided in terms of their geoheritage value to enable a more comprehensive geoconservation strategy be incorporated into the Prince Edward Islands Management Plan.
A new species of the genus Xistra Bolívar, 1887 (Orthoptera: Tetrigidae) from Cambodia
Authors:   Federal Scientific Center of the East Asia Terrestrial Biodiversity, Far East Branch of the Russian Academy of Sciences, Vladivostok, 690022, Russia, Storozhenko S.Yu.
Published: May 2021

Xistra cambodia Storozhenko, sp. n. is described and illustrated from Cambodia. The new species is similar to X. angusta Ingrisch, 2001 and X. strictivertex Zheng et Ou, 2010 but differs from both species by a shape of prozonal carinae and slender hind femora.
On the Amine-Catalyzed Suzuki-Miyaura Coupling Using a Catalysis-Based Fluorometric Method
Authors: Vinod Jincy K. , Wanner Annelise K. , James Elizabeth , Koide Kazunori
Published: May 2021

The Suzuki-Miyaura coupling is one of the most frequently used reactions in organic synthesis. Recent work by others suggested that an arylamine, prepared by palladium catalysis and tricyclohexylphosphine, could catalyze Suzuki-Miyaura coupling reactions without transition metals. Herein, we used a fluorometric quantification method for palladium previously developed in our laboratory to unambiguously conclude that there is a correlation between the palladium content in the arylamine and the rate of a Suzuki-Miyaura coupling. Also, our mass spectroscopic analysis of the arylamine revealed the presence of a palladium-phosphine complex. When Pd(OAc)2 was used as a catalyst for the same Suzuki-Miyaura coupling, tricyclohexylphosphine was detrimental to the coupling and that the arylamine played negligible role. This study demonstrates the utility of the fluorometric technology for catalysis research.
Low-Cost Temperature Transition Mixtures (TTM) Based on Ethylene Glycol/potassium Hydroxide as Reversible CO2 Sorbents
Authors: Costamagna Marcello , Micheli Eleonora , Canale Valentino , Ciulla Michele , Siani Gabriella , Tiecco Matteo , Ciancaleoni Gianluca
Published: April 2021

A low-cost Transition Temperature Mixture (TTM) has been synthesized by mixing ethylene glycol and potassium hydroxide as a new non-aqueous CO2 sorbent. Boric acid has been added to ensure the reversibility of the system and a small amount of water to modulate the viscosity and optimize the performances. The resulting mixtures have been characterized in terms of viscosity, conductivity and density over temperature (therefore ionicity via Walden plots) and the effect of temperature, pressure and the kinetics of the absorption have been evaluated. Under optimized conditions, the four-component mixture EG/KOH/BA/H2O 3:1:1:3 can absorb 24 gCO2/kgsorbent in 30 minutes at 35°C at 1 atm (59 after 4 h) and 60 gCO2/kgsorbent in 30 minutes at high pressure (10 and 20 atm, 80 gCO2/kgsorbent after 50 min), while the desorption is quantitative after 30 minutes at only 60°C under a gentle N2 flow. The system is robust enough to ensure multiple absorption/desorption cycles.
The Effect of Particle Size on the Optical and Electronic Properties of MgO Nanoparticles
Authors: Zwijnenburg Martijn
Published: April 2021

evGW-BSE is used to predict the (band) edge states, fundamental gap, optical gap, exciton binding energy and UV-Vis absorption spectra for a series of cuboidal MgO rocksalt nanoparticles, the largest of with has 216 atoms and edges of 1 nm. The evolution of the electronic and optical properties with particle size was studied, where it was found that while the edge states and fundamental gap change with particle size, the optical gap remains essentially fixed for cuboid nanoparticles containing 48 atoms or more. The explanation for that observation is that while the optical gap is associated with an exciton that is well localised on the magnesium corner atoms and the oxygen atoms directly surrounding it, the edge states, while primarily localised on the magnesium corner atoms (electron) and oxygen corner atoms (hole), show significant delocalisation along the edges away from the corner atoms. The BSE/evGW optical gap for the smallest particles, the (MgO)4 cube, matches with that obtained independently from coupled cluster theory, while for the (MgO)32, a cube with edges of 0.6 nm, the BSE/evGW predicted excitation spectrum agrees well with the experimentally reported reflection spectra of MgO nanoparticles.
The Role of Structural Flexibility in Plasmon-Driven Coupling Reactions: Kinetic Limitations in the Dimerization of Nitro-Benzenes
Authors: Koopman Wouter , Titov Evgenii , Sarhan Radwan Mohamed , Gaebel Tina , Schürmann Robin , Mostafa Amr , Kogikoski jr. Sergio , Milosavljevic Aleksandar , Stete Felix , Liebig Ferenc , Schmitt Clemens N. Z. , Koetz Joachim , Bald Ilko , Saalfrank Peter , Bargheer Matias
Published: May 2021

The plasmon-driven dimerization of 4-nitrothiophenol (4NTP) to 4-4’-dimercaptoazobenzene (DMAB) has become a testbed for understanding bimolecular photoreactions enhanced by nanoscale metals, in particular, regarding the relevance of electron transfer and heat transfer from the metal to the molecule. By adding a methylene group between the thiol bond and the nitrophenyl, we add structural flexibility to the reactant molecule. Time-resolved surface-enhanced Raman-spectroscopy proves that this (4-nitrobenzyl)mercaptan (4NBM) molecule has a larger dimerization rate and dimerization yield than 4NTP and higher selectivity towards dimerization. X-ray photoelectron spectroscopy and density functional theory calculations show that the electron transfer would prefer activation of 4NTP over 4NBM. We conclude that the rate limiting step of this plasmonic reaction is the dimerization step, which is dramatically enhanced by the additional flexibility of the reactant. This study may serve as an example for using nanoscale metals to simultaneously provide charge carriers for bond activation and localized heat for driving bimolecular reaction steps. The molecular structure of reactants can be tuned to control the reaction kinetics.
An Experimental Toolbox for Structure-Based Hit Discovery for P. Aeruginosa FabF, a Promising Target for Antibiotics
Authors: Espeland Ludvik Olai , Georgiou Charis , Klein Raphael , Bhukya Hemalatha , Haug Bengt Erik , Underhaug Jarl , Mainkar Prathama S. , Brenk Ruth
Published: May 2021

FabF (3-oxoacyl-[acyl-carrier-protein] synthase 2), which catalyses the rate limiting condensation reaction in the fatty acid synthesis II pathway, is an attractive target for new antibiotics. Here, we focus on FabF from P. aeruginosa (PaFabF) as antibiotics against this pathogen are urgently needed. To facilitate exploration of this target we have set up an experimental toolbox consisting of binding assays using bio-layer interferometry as well as saturation transfer difference (STD) and WaterLOGSY NMR in addition to robust conditions for structure determination. The suitability of the toolbox to support structure-based design of FabF inhibitors was demonstrated through the validation of hits obtained from virtual screening. Screening of our in-house library of almost 5 million compounds resulted in 6 compounds for which binding into the malonyl-binding site of FabF was shown. For one of the hits, the crystal structure in complex with PaFabF was determined. Based on the obtained binding mode, analogues were designed and synthesised, but affinity could not be improved. This work has laid the foundation for structure-based exploration of PaFabF.
Comparison of Numerical and Analytical Approaches for Simulating Purely Sinusoidal Voltammetry
Authors: Lloyd-Laney Henry , Robinson Martin , Parkin Alison , Gavaghan David
Published: May 2021

In this paper we present a comparison of two mathematical techniques for simulating the behaviour of a surface-confined single-electron redox process when interrogated with a large amplitude sine-wave. The two simulation methods are an analytical approximation proposed by Bell and co-authors, and a numerical solution that we have previously used to analyse such single-electron processes. We show that the techniques are in good agreement, allowing for the limitations imposed by the construction of the analytical model. We also compare two different parameter inference approaches proposed for the respective simulation techniques.
An Atomistic View of Electrodics at the Platinum Surface
Authors: Bawari Sumit , Narayanan Tharangattu , Mondal Jagannath , Tharangattu Narayanan Narayanan
Published: May 2021

Platinum (Pt) is a benchmarked catalyst for several electrochemical processes, however an atomistic insight into its electrodics at the electrode-electrolyte interface is still lacking. In this study, we aim to capture the chemical changes of Pt surfaces brought on by an applied potential in an electrolyte of pH~5, which can address the catalytic efficacy and stability of different crystallographic orientations under varying applied bias. Through a combined experimental and reactive molecular dynamics simulation approach, we uncover the effect of charge build up on the surface of the Pt electrode, which can be directed towards capacitive and faradaic processes. By introducing a simulated applied potential, which is compared to experimental potential by equating charge density ( in the range -0.2 mC/cm2 to 0.2 mC/cm2 ), we unravel the electrochemical processes on Pt (in slightly acidic pH). At reductive potentials of ~0.3-0.0 V vs RHE, we visualize phenomenon such as under potential hydrogen adsorption (HUPD) and hydrogen evolution/oxidation reaction. While oxidative potentials in the range ~1.2-1.6 V vs RHE see platinum oxide (Pt-O) formation, and platinum leaching off the surface. The theoretical potential and plane dependence of these phenomenon (HUPD, Pt-O, etc.) are verified with experiments, and hence it brings a new platform for computationally viable electrode-electrolyte studies.
EFEKTIVITAS PELAKSANAAN BLENDED LEARNING DI SMAN 4 SINGARAJA
Authors: Suardana I Nyoman
Published: May 2021

The purpose of this Community Partnership Program was to describe the effectiveness of the implementation of blended learning at SMAN Singaraja, Buleleng, Bali. For that, five subjects were used as pilots for the implementation of blended learning projects. They were Chemistry, Physics, Biology, English and Religion. The selection of them as pilot projects was based on the readiness of subject matter partners to carry out blended learning and partners’ competencies in mastering information technology. Before implementing the blended learning, the partners created online contents of the subjects. During the creation of these online contents, the partners were guided by Community Partnership Program implementers. The platform used to create online content was google classroom. The implementation of blended learning used the flipped classroom model. In this model, students learnt the contents first at home uploaded online by partners. The contents uploaded online in the forms of learning materials, textbooks, learning videos, students’ worksheets, and assignments related to the topic being studied. The results of implementation of the blended learning were as follows. The average score of partners' skills in implementing the blended learning were 2.72 and 4.38, respectively, with a normalized gain score of 0.73 (relatively high). Students’ learning outcomes had reached the classical learning completeness of 87.50% (exceeding the classical completeness criteria of 85%). Students responded to the implementation of blended learning very well (the average score of 4.35).
Job Opportunity, Attitudes, Perceived Behavioral Control and Intention to Major in Accounting
Authors: Gainau Paskanova Christi
Published: May 2021

This research aims to capture the accounting behavior phenomenon in accounting students at private universities in Manado. This research is developed from the study of Lin & Fawzi (2006), Zandi et al.(2013), and Odia & Ogiedu (2013). To find out the inconsistency of these researches, this research focus to study about the students’s intention in choosing an accounting program. Partial least square is used to analyze the research model. This study used questionnaires and deep interviewed to collect the data. It reveals that job opportunities deliver positive effects on accounting students’s attitudes, and these attitudes affect their intention to select the program. The reputation on higher education institutions on accounting do not determine the students’s attitudes to enroll in accounting. Subjective norm do not influence students intention. Perceived behavior control positively encourages   the purposeof choosing the accounting program. These findings designate implications for accounting lecturers to explain the benefits, job opportunities, and temporary accounting issues to students. Management of the accounting department needs to re-design their curriculum; thus, it can drive college students to compete and have fun throughout the learning process. Lecturers are obligated to update their learning methods and include educational characters in the provision of material to increase students's motivation.
The Attitudes of Pupils towards using Flipgrid in Learning English Speaking Skills
Authors: Shin Joan Lim Ker , Yunus Melor Md
Published: May 2021

. The objective of this research is to conduct an investigation into the attitudes of primary pupils towards using Flipgrid in learning English speaking skills in a Year 4 Common European Framework of Reference for Languages (CEFR) classroom. The research used a mixed-methods approach using an explanatory sequential design. Data collection was via a questionnaire and semi-structured interviews with 60 CEFR primary Year 4 pupils with low English-speaking proficiency. The results of the questionnaire were analysed descriptively, whereas the data from the semi-structured interviews was analysed using thematic analysis. The findings showed that primary pupils in a CEFR classroom had a high positive attitude towards using Flipgrid to learn English speaking skills. This research has highlighted the potential use of Flipgrid in both learning and teaching English speaking skills in a CEFR classroom. More extensive research into the use of Flipgrid by secondary pupils in a CEFR classroom would be of further interest. Future research on this topic may provide greater insight into the different ways in which English educators can teach English speaking skills to secondary pupils. Moreover, the results could provide useful information to the Ministry of Education on the use of the e-learning approach in the learning and teaching of English speaking skills in the Malaysian CEFR classroom.
Pengaruh Orientasi Pasar Terhadap Kinerja Pemasaran UMKM Melalui Keunggulan Bersaing di Kota Solo
Authors: Rahadhini Marjam Desma , Lamidi Lamidi
Published: May 2021

Penelitian ini bertujuan menganalisis pengaruh orientasi pasar terhadap kinerja pemasaran melalui keunggulan bersaing. Keunggulan bersaing adalah aktivitas memproduksi, memasarkan, dan menyerahkan produk. Orientasi pasar diharapkan mempunyai komitmen untuk terus berkreasi dalam menciptakan nilai unggul bagi konsumen, sehingga orientasi pasar berperan penting bagi UMKM usaha kuliner sebagai suatu proses dan aktivitas yang berhubungan dengan penciptaan dan pemuasan konsumen. Penelitian ini adalah penelitian survei. Populasi penelitian adalah UMKM kuliner yang ada di pusat jajanan Kota Solo. Pengumpulan data menggunakan kuesioner. Teknik sampling dengan metode purposive sampling, yaitu UMKM yang ada di Galabo, Jagalan dan Manahan. Sampel ditentukan sebanyak 67 responden. Pengujian validitas menggunakan Confirmatory Factor Analysis (CFA), dan Cronbach’s Alpha untuk pengujian reliabilitas. Analisis data menggunakan Structural Equation Model (SEM) dengan Partial Least Squares (PLS). Orientasi pasar efektif untuk mendapatkan dan mempertahankan keunggulan bersaing dimulai dari perencanaan dan koordinasi dengan semua bagian untuk memuaskan kebutuhan dan keinginan konsumen, sehingga orientasi pasar akan meningkatkan kinerja pemasaran bagi UMKM.
El trabajo social en el ámbito laboral desde el abordaje del equipo interdisciplinario
Authors: Guaman-Guaman Benito Danilo
Published: April 2021

El presente artículo tiene como finalidad describir la importancia  que representa el Trabajo Social en el ámbito laboral como parte del equipo interdisciplinar de una organización o empresa, donde habitualmente cumple diversas funciones direccionada a mejorar la calidad de vida de los colaboradores, para ello, se basará en varios ejes claves, como es: la conceptualización del Trabajo Social, métodos, intervención en el campo organizacional,  las funciones que ejerce en el Departamento de Talento Humano, definición de equipo multidisciplinar e interdisciplinar y su principal diferencia y finalmente el accionar del Trabajo Social. La profundidad abarca como eje central la interacción, comunicación y trabajo en equipo entre las distintas disciplinas que conforman un departamento de Talento Humano, debido que la comunicación es un eje clave en el desarrollo empresarial. De igual manera, realza la intervención del profesional en el área laboral, dado que su intervención aporta con conocimientos sustanciales en conjunto con los demás profesionales, con la finalidad realizar una intervención íntegra, direccionada a mejorar las condiciones de vida de los colaboradores, familia y empresa.
Proyecto de Factibilidad de Negocio de Bar – Safari Licores en Azogues
Authors: Mogrovejo Alberto Esteban , Villavicencio-Machado Javier Alfonso , Aguilar-Aguilar Cristóbal Oswaldo
Published: April 2021

Safari Licores es una empresa cuencana que se dedica al expendio de bebidas alcohólicas en instalaciones que tienen adecuaciones de un bar para la comodidad de sus clientes, esta 15 años dentro de este mercado en la ciudad de Cuenca lo que demuestra su experiencia sobre el negocio; analizando la posibilidad de extenderse con una sucursal de las mismas características en la ciudad de Azogues aprovechando la igualdad de las características culturales y de idiosincrasia de las dos ciudades; la problemática que se ha encontrado para desarrollar esta investigación es que Azogues no tiene un bar con las siguientes características; que sea un punto de encuentro entre amigos o conocidos donde no solamente se tome alcohol sino se pueda disfrutar de música en vivo, de la transmisión de eventos deportivos nacionales e internacionales; el objetivo es inaugurar un comercio de estas características en una ciudad con un crecimiento demográfico importante y una alza en el comercio en actividades económicas como restaurants, bares, licoreras especialmente en la zona sur de la ciudad; la investigación es de tipo mixta; utiliza datos cualitativos para conocer los gustos y recomendaciones sobre este mercado de la población azogueña y cuantitativos para establecer la demanda de este tipo de negocios y determinar su operatividad; con los resultados obtenidos en el Valor Actual Neto (VAN) US$ 7,519.72 Tasa Interna de Retorno (TIR) 28.69%; que está por encima de la tasa media del mercado, su beneficio costo (B/C) en 1.37 por encima de 1; por lo cual se recomienda la viabilidad del proyecto.
Mirada, cuerpo y territorio: análisis de problemáticas socioambientales desde el arte y la educación
Authors: Romero Acuña Diana Carolina , Vaderrama Leongómez Santiago
Published: May 2021

Es necesario abordar las problemáticas ambientales - territoriales de manera trans-disciplinar para poder construir caminos desde los cuales nuestras miradas no se aíslen, por el contrario puedan conjugarse para aportar a un conflicto socio-ambiental como el que se vive en la región de Fúquene (Colombia) y Plateau de Millevaches (Francia). Para ello es necesario pararnos en teorías que permitan la conexión entre territorios diversos desde la Cultura Visual y la decolonialidad y el ambiente-territorio como escenarios de convergencia. En el proyecto realizado entre la línea de investigación Bioarte y el ARC experience du territoire de la Escuela Nacional superior de Artes (Limoges-Francia), se trabaja desde un entramado de modelos educativos con énfasis en lo popular y comunitario, donde las pedagogías colectivas permiten abordar problemas sociales y ambientales específicos
Nivel de evasión de impuestos de las pequeñas empresas de la ciudad de Curuguaty
Authors: Franco Garcete Juan Carlos , Pera Brizuela Liz Marina , Ramírez Schulz Elisa , Ortiz Acosta Orlando
Published: May 2021

La evasión fiscal o evasión de impuestos, conocida también como fraude fiscal, es la actividad ilícita en la que incurren personas o empresas cuando ocultan bienes o ingresos a las autoridades tributarias, o sobrevaloran los conceptos deducibles, con el fin de pagar menos impuestos de los que legalmente les corresponden. Cuando supera una cierta cuantía, se considera delito fiscal, pudiéndose sancionar con penas privativas de libertad, mientras que los fraudes de menor cuantía se tramitan como infracción administrativa, sancionándose con multas. La finalidad de la investigación fue conocer la situación de la ciudad de Curuguaty a nivel económico, por lo que cada vez más va en aumento las pequeñas empresas, la problemática o situación a conocer es si todas las pequeñas empresas pagan su impuesto al fisco y que causas producen la evasión.
Effectiveness of the Comirnaty (BNT162b2, BioNTech/Pfizer) vaccine in preventing SARS-CoV-2 infection among healthcare workers, Treviso province, Veneto region, Italy, 27 December 2020 to 24 March 2021
Authors: Fabiani Massimo , Ramigni Mauro , Gobbetto Valentina , Mateo-Urdiales Alberto , Pezzotti Patrizio , Piovesan Cinzia
Published: April 2021

Data on effectiveness of the BioNTech­/Pfizer COVID-19 vaccine in real-world settings are limited. In a study of 6,423 healthcare workers in Treviso Province, Italy, we estimated that, within the time intervals of 14–21 days from the first and at least 7 days from the second dose, vaccine effectiveness in preventing SARS-CoV-2 infection was 84% (95% confidence interval (CI): 40–96) and 95% (95% CI: 62–99), respectively. These results could support the ongoing vaccination campaigns by providing evidence for targeted communication.
Optimum Medium for Lipase Production by Lipolytic Filamentous Fungi Isolated from Kendari Landfill Soil
Authors: Rayani Nur , Ilmi Miftahul
Published: April 2021

Lipase produced by Aspergillus is widely known and used in many industrial sectors. In a previous study, three lipolytic filamentous fungi were isolated from Kendari (Southeast Sulawesi, Indonesia) landfill soil and identified as Aspergillus niger KE1, Aspergillus terreus KC1, and Aspergillus fumigatus KE6. However, the optimization of these isolates has not been reported. In this study, statistical optimization was selected because it is more effective, efficient, economical, and robust in achieving results, and the possibility of analyzing the interaction effects among factors. Three lipolytic isolates were screened in the initial medium to obtain the highest lipolytic isolate, which was used in the medium optimization process. Optimization was performed using the series experimental design of Taguchi and RSM. Optimization successfully obtained the optimum medium with the reduction of the medium component from the previously reported medium. Aspergillus niger KE1 was the selected isolate with the highest lipase productivity after 72 h in the initial medium. The significant factors affecting lipase production were peptone, olive oil, glucose, and MgSO4 .7H2O. The model equation obtained was Y = 1043 ? 228 A + 300 B ? 19803 C + 99 A*A + 5720 B*B + 292855 C*C ? 979 A*B + 6563 A*C ? 56338 B*C. This model successfully predicted the lipase productivity with an R2 of 96.9%. The optimized medium was composed of 2% peptone, 0.1% olive oil, 0.5% glucose, and 0.075% MgSO4 .7H2O. Using the medium, lipase productivity increases 4.7-fold. Our results suggest that A. niger KE1 is a potential lipase source which catalyses the esterification reaction. Further research is needed to purify and characterize the lipase enzyme of this isolate.
Polifarmacia en pacientes adultos mayores pluripatológicos que acuden al primer nivel de atención en salud.
Authors: Tinitana-Ortega Jessica Elizabeth , Torres-Jaramillo Isabel , Tacuri-Romero Julia Nathaly , Ajila-Vacacela José , Zari-Espinoza Dannye Benito , Zhuzhingo-Vásquez Carlos
Published: May 2021

El anciano es un gran consumidor de fármacos, por ser propenso a múltiples enfermedades crónicas y a un manejo inadecuado de los tratamientos. El objetivo de este estudio fue evaluar la prevalencia real de la polifarmacia en la población adulta mayor con antecedentes pluripatológicos. Para ello se realizó un muestreo por conveniencia no probabilístico;  se encuestaron un total de  124 pacientes para determinar la presencia de polifarmacia y sus características. Los resultados presentaron una prevalencia de polifarmacia de 75% (93 casos),   una  en relación estadísticamente significativa con el sexo femenino de los cuales  se pudieron  constatar un 68% de administración de medicamentos sin prescripción  y un 89% que  no reciben un control de la medicación prescrita referente a sus diagnósticos pluripatológicos. Se concluyó que la polifarmacia es una entidad de prevalencia alta en la población adulta mayor ligada a su estado pluripatológico; con esta clase de estudio se podrá determinar medidas que intensifiquen el control y seguimiento del uso adecuado de fármacos; a fin de establecer una política de salud en el adulto mayor dirigido al mantenimiento de la funcionalidad y reducción de la mortalidad por causas evitables.
Sensibilidad y resistencia bacteriana en pacientes con diagnóstico de pie diabético
Authors: Rojas Solórzano Jonathan , Vergara León Yanela , Lam Vivanco Adriana , Cobos  Lara Isabel , Chamaidan Loayza Joselyn , Espinoza Flor María
Published: May 2021

La Diabetes Mellitus es considerada una de las enfermedades metabólicas que se caracteriza por hiperglucemia, cuyo defecto es la destrucción de células β llevando a la deficiencia de insulina. El pie diabético es una secuela grave de la Diabetes, provocando destrucción del tejido en las extremidades inferiores, acompañado de una serie de anormalidades de índole neurológico y varios grados de enfermedad vascular a nivel periférico. El objetivo de este trabajo fue caracterizar las bacterias con mayor frecuencia en pacientes con pie diabético ingresados al Hospital del IESS de la ciudad de Machala, Ecuador, mediante realización de análisis microbiológicos y empleo de antibiograma para la medición de sensibilidad y resistencia de estas bacterias. Se realizó un estudio tipo experimental, descriptivo transversal. Se identificaron 81 casos de bacterias, el 77,5% fueron Gram negativas como E. Coli, Klebsiella Pneumoniae y Pseudomona Aeruginosa, con 20,6%. Los Gram positivos, el 44,4% representa a S. epidermidis, 27,8% pertenece a S. Betahemolítico, S. Aureus con 16,7% mientras que el 11,1% constituyen las bacterias Enterobacter Aerogenes. En los resultados del cultivo, las bacterias más frecuentes fueron bacterias Gram Negativas como Pseudomona Aeruginosa, E. coli, K.Pneumoniae con 20,6%. Según la escala de Wagner, el grado de lesión que mayor se presenta es el grado III con 44,4%. Según el antibiograma, los medicamentos con mayor resistencia son Ciprofloxacino y Ceftriaxona, y los medicamentos con mayor sensibilidad bacteriana  Amikacina, Imipenem y Piperazilina + Tazobactam.
Infecciones oportunistas en pacientes con VIH/SIDA atendidos en el Hospital de Infectología, Guayaquil, Ecuador
Authors: Morey León Gabriel , Zambrano Bonilla Rosario , González González Manuel , Rodríguez Erazo Luis , Andino Rodríguez Francisco , Vega Luzuriaga Patricio
Published: May 2021

Las infecciones oportunistas son una de las principales causas de hospitalización y morbilidad de pacientes VIH/SIDA. En Latinoamérica, toxoplasmosis cerebral, candidiasis y tuberculosis pulmonar han sido reportadas como las más recurrentes en este grupo de pacientes de riesgo. El conocimiento del comportamiento de las infecciones oportunistas en pacientes VIH/SIDA dentro de cada país es importante, permitiendo aplicar estrategias oportunas de control y tratamiento, por tal motivo se realizó un trabajo para conocer la frecuencia de infecciones oportunistas en pacientes VIH atendidos en el Hospital de Infectología, Guayaquil, Ecuador, durante el año 2017. Se desarrolló un estudio observacional, descriptivo, retrospectivo a partir de 143 registro de pacientes que ingresaron al Hospital de Infectología. La información se analizó en el programa SPSS, frecuencias y porcentajes para las variables categóricas, y la media y desviación estándar para las variables cuantitativas, fueron empleadas para la estadística descriptiva. Se obtuvo como resultado que la Histoplasmosis fue la principal infección oportunista presente en el 55,7% de los casos, seguido por tuberculosis pulmonar (15,6%) como segunda causa. A pesar de los grandes avances en el tratamiento del VIH/SIDA, un número considerable de pacientes aún son afectados por infecciones oportunistas en el país, por lo cual una detección oportuna del agente causal es necesaria.
El Modelo de Creencia de Salud (HBM): un análisis bibliométrico
Authors: Rodriguez Insuasti Homero , Mendoza Zambrano Damian , Vasquez Giler Maritza
Published: May 2021

El objetivo de este trabajo de investigación fue analizar desde el punto de vista bibliométrico la literatura en temas del modelo de Creencia de Salud o Health Belief Model, desde el año 1 974 hasta el 2 019. El enfoque metodológico de esta investigación fue un proceso de revisión de literatura en la base de datos de la Web of Science (WOS), con la frase “health belief model”. Sobre los resultados se hizo uso del análisis bibliométrico en las variables tipos de documentos, tiempo, tipos de revistas, co autores, países y palabras claves. La revisión arrojó un total de 2 832 estudios, encontrándose la mayoría de artículos en revistas resúmenes de ponencias científicas, con una gran cantidad de investigaciones realizadas en la última década lo que hace que sea un modelo actual de trabajo, las revistas donde se identifica la mayoría de artículos fueron de salud preventiva, educación y psicología, el principal autor de acuerdo al h-index es Wang con un índice de 146. Los países que lideran este tipo de investigaciones son Estados Unidos e Irán, lamentablemente ningún país de Latinoamérica aparece en esta lista. Finalmente, se concluye que el modelo de creencia de salud se encuentra en mucha vigencia como se pudo constatar en el crecimiento de la última década en los países del primer mundo como Estados Unidos, Irán y República Popular China, y donde lideran las investigaciones autores con apellidos orientales como Wang y Sun.
Asimetrías de poder y violencia intrafamiliar en la Provincia de El Oro
Authors: Ullauri-Carrión Marcia , Quinche-Labanda Darwin , Gordillo-Quizhpe Iván
Published: May 2021

La investigación da respuesta al problema de la violencia intrafamiliar que, según la constelación social de Ecuador, es proteica que muta de física a psíquica, de real a irreal, y vive en espacios subcutáneos, subcomunicativos, de tal forma que se lo invisibiliza y naturalizado en diversos ámbitos sociales. El ejercicio asimétrico del poder genera violencia en las esferas públicas y privadas, incrementándose exponencialmente en el País, en los últimos años ha registrado 24 mil 376 denuncias por violencia intrafamiliar; los cuales, el 88% son mujeres maltratadas (física, psicológica y sexual) y también reciben maltrato de género y un 22% de hombres son víctimas de agresiones. En este contexto, se ha propuesto el objetivo, determinar los factores de desigualdad y dominación que inciden en la violencia intrafamiliar del Cantón Pasaje. La metodología aplicada se basa en el enfoque mixto, y análisis de variables a nivel exploratorio y descriptivo, a través del procesamiento y análisis de estadísticas oficiales con la aplicación de entrevistas a hogares con violencia. Los hallazgos muestran y concluyen que la violencia es un fenómeno social multicausal complejo que se desencadena de las relaciones de poder y que responde a factores implícitos de dependencia en las interrelaciones de pareja.
Acústica subacuática: Un breve panorama histórico a través de la Segunda Guerra Mundial
Authors: G. Muir Thomas , L. Bradley David
Published: May 2021

Este artículo presentan algunos de los aspectos más sobresalientes de la investigación y desarrollo de la acústica subacuática, así como reconoce el mérito de miembros de la Sociedad Americana de Acústica (Acoustics Society of America, ASA), quienes contribuyeron con su trabajo durante el período de la Segunda Guerra Mundial. Los resultados de tal trabajo se convirtieron en logros científicos y de ingeniería que aparecen en literatura sobre acústica.
La derivada conformable y sus aplicaciones en ingeniería
Authors: Puente-Córdova Jesús Gabino , Rentería-Baltiérrez Flor Yanhira
Published: May 2021

En este trabajo se describen algunas aplicaciones de la derivada conformable en la solución de ecuaciones diferenciales de orden fraccionario. Las derivadas de orden no entero son presentadas en función del tiempo para resolver el modelo de Maxwell, el circuito eléctrico RC en serie y la ley de enfriamiento de Newton. Los resultados obtenidos muestran la variación del parámetro α del operador fraccional conformable para modelar el comportamiento de los fenómenos propuestos. Se obtiene que los parámetros esfuerzo, corriente eléctrica y temperatura en función del tiempo, presentan un decaimiento más pronunciado a medida que α disminuye. La derivada conformable es una herramienta matemática que permite resolver ecuaciones diferenciales de orden fraccionario en una forma más simple.
Postmodern Sanattan Güncel Sanata Yapıbozuma Uğrayan Bedenler
Authors: BÜYÜKPARMAKSIZ Mehmet Ali
Published: May 2021

Modernizm sonrası avangard akımlar tarafından oluşan sorgulama hali, sanat kavramlarına ilişkin eleştirel üretimleri yapıbozumcu bir dil üzerine oturtmuştur. Post-yapısalcılığın bir sonucu olarak ortaya çıkan yapıbozum, göstergeleri sorgulayarak mevcut yapının degiştirilmesi suretiyle dil anlayışında köklü degişiklikler ortaya çıkarmıştır. Bu bağlamda araştırmanın amacı; çok katmanlı eserler üreten çağımız sanatçılarının, bedene olan yapıbozumcu tavırdaki yaklaşımlarının neler olduğunu, yapıbozum kavramının sanatçı ve eser üzerindeki etkisini ve postmodern sanata ve güncel sanata yansımalarını orta çıkararak bu eserlerin anlaşılmasını sağlamaktır. Günümüzde bu kavramların anlaşılabilmesi, yapıbozumu çalışmalarında kullanan sanatçıların eserlerinin ele alınmasına bağlıdır. Konuyla ilgili literatür taranmış, bununla birlikte yapıbozum olduğu düşünülen çalışmalar incelenerek yorumlanmıştır. Araştırmada nitel veri analizi yöntemi olan “Betimsel Tarama” kullanılmış ve çalışmalar yedi ana başlık altında toplanarak değerlendirilmiştir. Bu araştırma, yapıbozuma uğrayan bedenlerin günümüz sanatının anlaşılmasını sağlaması açısından önemli görülmektedir. Sonuç olarak günümüz sanatçıları, biçimin bozulmasını, farklı göstergelerle seyirciyi irkilten çalışmalarla ortaya koymuşlardır. Gelişen teknoloji sayesinde sanatçılar, dikkat çekmek istenilen düşünceyi bazen fotoğrafla, bazen video sanatı ile grafiklerle, bedeni dönüştürerek, bedene ekleme ve çıkarmalar yaparak farklı tekniklerle yapıbozuma uğratmışlardır.
II Meeting DAT - Design, Art and Technology
Authors: Nesteriuk Sérgio , Prado Gilberto
Published: April 2021

The DAT - Design, Art and Technology - Vol.2 - 2020 Meeting this year, took place as part of HUB events 2020, together with a consortium formed with three other events: VII SIIMI - International Symposium on Innovation in Interactive Media, # 19. ART - International Meeting of Art and Technology, II International Retina Colloquium. The authors and tables of the annals mentioned below are related to the DAT Meeting - Design, Art and Technology. The DAT Event - Design, Art and Technology, from the Postgraduate Program in Design throughout Anhembi Morumbi University (UAM), aims to bring together thinkers from national and international universities with a specific focus on creative cultural and technological sectors that develop research, projects , ideas, innovation and entrepreneurial activities. It explores the potential to blur the boundaries between design, art and technology with specific reference to discuss creativity in design and technology - examining how digital technology is approached by artists and designers.
Workshop como uma metodologia para o ensino-aprendizagem de ciências: um estudo de caso com o grupo Bioinorganic Chemistry Environment and Medicine (BIOMET)
Authors: Vitorino Hector Aguilar , Alta Roxana Yesenia Pastrana , Ortega Priscila
Published: April 2021

A busca por metodologias educacionais, como os workshops, é constante para a melhoria do processo de ensino-aprendizagem. Dessa maneira, o objetivo do estudo foi analisar o workshop BIOMET 2017 como um evento de difusão científica e ferramenta metodológica para o aprendizado significativo dos participantes. O evento ocorreu em 3 dias, sendo o primeiro dia teórico (palestras sobre bioindicadores marinhos), o segundo prático (minicurso) e o terceiro dia de análise e discussão de dados. Ao final do terceiro dia, um formulário de satisfação foi dado para cada participante para avaliação do evento. De maneira geral, o evento apresentou grande participação masculina de estudantes de graduação, das áreas de Química e Biologia, com pouca experiência em laboratório, e classificado como “bom ou muito bom” pelos participantes. O minicurso avaliou estatisticamente a morte de artêmias, ao longo do tempo, em crescentes concentrações de cloreto de cádmio. A morte de artêmias ocorreu a partir de 10 mmol L-1, após 1 hora de experimento, os quais contrastaram com a literatura, possivelmente devido às dificuldades relacionadas a execução do experimento. Com esse intuito, eventos como BIOMET 2017 são importantes ferramentas de aprimoração, aproximando o conteúdo teórico da prática laboratorial, desenvolvendo profissionais mais críticos e reflexivos.

Palavras chave: Educação, minicurso, artêmias, contaminantes.