bluuebunny/crossref_metadata_2025 huggingface dataset:
Caracterização microbiológica de polpas de caju produzidas no Brasil: Um estudo de revisão
Authors: Sousa Marcos Silva de , Souza Luana Costa De , Silva Kariny Pereira da , Campos Ellen Fernanda Silva
Published: November 2022

As frutas são produtos que nos trazem diversos benefícios à saúde e são de extrema importância para o bom funcionamento do nosso corpo, é considerada uma boa fonte de nutrientes essenciais ao organismo humano. Dessa forma, este estudo tem por objetivo, identificar pesquisas na literatura que mostrem a avaliação microbiológica das polpas congeladas de caju comercializadas no Brasil. A pesquisa foi realizada na base de dados eletrônicos Scopus, com artigos selecionados dos últimos 10 anos, a fim de avaliar a qualidade e a segurança das polpas de caju produzidas. Para tanto, foram obtidos sete artigos, onde apenas três deles foram selecionados para compor esta pesquisa. O trabalho mostrou que a alta contaminação por microrganismos, sugere que as condições sanitárias iniciais dos frutos recebidos pela indústria interferiram na qualidade do produto final que desencadeou consequências negativas à medida que o processamento e as etapas de armazenamento foram avançados. Os resultados encontrados para as polpas congeladas de caju comercializadas no Brasil, encontrados nos estudos de (2012) e Carrenho et al. (2020) atendem ao padrão mínimo preconizado pela legislação vigente, enquanto o estudo de Santos et. al (2016) apresentou alta contaminação microbiológica em uma das marcas analisada caracterizando-se imprópria para o consumo por alta contaminação fungica. Com isso, a alta contaminação por microrganismos em um dos estudos sugere que as condições sanitárias iniciais dos frutos recebidos pela indústria. No mais, este estudo proporciona valiosos subsídios para esta linha de pesquisa, pois pode atuar como base para futuros trabalhos, e possibilitar possíveis soluções para a problemática aqui apresentada.
Teacher challenges in Faroese Compulsory Schools during the COVID-19 Pandemic and Support from School Leaders
Authors: Vijayavarathan-R Kalpana
Published: November 2022

This mixed method pilot study aimed to elicit the impact of COVID-19 on Faroese compulsory school teachers as professionals and people in 2020-21. The objectives were to understand teacher and teaching challenges during the pandemic, positive and negative experiences, teacher evaluation of the efficiency and effectiveness of the crisis leadership of their school leaders, identify concerns with ‘learning loss’ and explore any evidence of organisational learning for schools. The findings reveal that teacher challenges included lack of digital competence, coping with the change in the teaching-learning environment, the difficulty in adapting to Information Communication Technology (ICT), reduced teacher self-efficacy and emotional stress. It revealed the tremendous concern teachers have for their students’ learning outcomes and well-being. Teacher evaluation of their leaders is fairly positive. It is not very clear if organisational learning has resulted from the COVID-19 crisis and been anchored to provide a basis for tackling future crises. This may be significant in providing school staff resilience to cope with any future change in the external environment and the resultant consequences for leadership, teachers and students.
Physical and Chemical Properties, Morphology, Structure and Reactivity of Soot Particles of Diesel Exhaust Gases
Authors:   Vyatka State Technical University, Likhanov V.A. , Rossokhin A.V. ,   Vyatka State Technical University
Published: November 2022

This work considers the methods for studying the composition and structure of solid carbon particles (Diesel particulate matter — DPM) formed during the combustion of fuel in the cylinder of a highspeed diesel engine. The choice of the set of tools for studying physical and chemical properties is due to their small size and the small amount of time devoted to studying their primary structure, since they undergo changes in the future. The paper presents some of the results of such studies. The results give better understanding of the morphology of carbonaceous particles, and thus the mechanisms of their formation and oxidation. Particular attention is paid to the internal structure of the particles, which determines their properties, reactivity, and ways of further development. We draw the conclusions upon the effectiveness of the considered methods for determining the internal structure of solid carbonaceous particles, the main properties of particles obtained by burning diesel fuel, as well as using alcohols and compounds based on them as fuel. It is shown that the molecular and atomic structure of carbon particles has a multilayer structure affecting the ability of these particles to participate in further reactions.
The Conceptual Politics of Democracy Promotion: The Venezuela Case
Authors: El Hajj-Hassan Ali , Ferguson Peter
Published: November 2022

In 1970 Giovanni Sartori articulated what he saw as the greatest challenge to political science in an increasingly globalized worldconceptual stretching. Sartori was referring to the traveling of western concepts eastward and proposed the use of a conceptual ladder to help inform the decisions political scientists make regarding the concepts they wish to travel. This paper seeks to push the boundaries of Sartori’s critique beyond academia to include policy; a subject where a dynamic and informative relationship between academia and policy should exist, but are instead faced with a one-dimensional arrangement. In that vein, this paper consists of three main parts. The first employs a brief historiography of the conceptual debate between, largely, Schumpeterian and Dahlian definitions of democracy where two main schools of thought will be sketched. The second evokes Venezuela's recent political history to illustrate how the United States Government has, at different times, employed various definitions, and standards, of democracy to describe the Venezuelan regime. The third seeks to establish how American oscillation between standards erodes the value reference point of democracy and draw out the implications of this. In particular, the third part unpacks what this erosion should mean moving forward for academics engaged in the conceptual politics of democracy. In sum, the instrumentalizing of the ambiguity of the concept—democracy—by oscillating between Schumpeterian and Dahlian standards devalues the concept. And unless the academic debate regarding democratic theory begins to account for this devaluation, democracy may well be emptied of its substance.
Impact Assessment of COVID-19 on Indian Agriculture
Authors:   Hiralal Mazumdar Memorial College for Women, Dakshineswar, Kolkata, West Bengal, Ahmad S Rehan Ahmad
Published: November 2022

The economic ramifications of COVID-19 propelled agriculture into the mainstream of conversation. The impact of the labourers' reverse migration to India's hinterlands varies by location. While the well-off regions' agricultural operations are about to suffer, the hinterlands will have a surplus of labourers, creating new difficulties and opportunities. To shed light on the strategies the sector will need to adapt to recover more effectively in this setting, it is useful to revisit the role of agriculture in economic development. The effects of the lockdown on agriculture are discussed in this article. There is also a discussion of how the economic downturn may affect agriculture.
¿Quién Está Impulsando la Transición a la Electromovilidad en la Ciudad de México? Un Estudio de Agentes de Nicho
Authors: Medina Lourdes Álvarez , Sánchez Lourdes Marquina
Published: November 2022

La transición a un nuevo paradigma de movilidad basado en tecnologías de energía eléctrica está en marcha para responder a los problemas del cambio climático y las grandes ciudades están desarrollando estrategias para apoyar la trasformación hacia la movilidad sostenible. Los estudios sobre transiciones sociotécnicas que abordan el cambio a largo plazo de instituciones y tecnologías son sustento de esta investigación. Este artículo reconoce a los Agentes de nicho y explora su capacidad de agencia y legitimidad para influir en la transición a la electromovilidad en la Ciudad de México. Se desarrolló una investigación cualitativa basada en la técnica documental. Según Fischer y Newig (2012), se reconoció y categorizó a los actores a partir de su ontología, espacio de intervención y capacidad de agencia para influir en la toma de decisiones. Los Agentes de nicho son complementarios según su ontología y actores internacionales como CFF, ITDP y Carbón Trust conducen la estrategia de electromovilidad. Su conocimiento experto y capacidad para movilizar recursos mantiene su capacidad de agencia y legitimidad.
Estudo do Efeito da Taxa de Cisalhamento da Solução Reacional na Obtenção de Nanopartículas de Óxido de Zinco
Authors: Thainara A. Gouvêa  , Aline C. O. Silva  , P. Gonçalves Erika
Published: November 2022

Nanopartículas de óxido de Zinco (ZnO) têm tido crescente interesse nas pesquisas e desenvolvimento, devido a suas características de biocompatibilidade, inércia química e elevada área superficial, tem sido apontado como material promissor para a aplicação nos mas diferenciados ramos industriais; tais como; carreadores de fármacos, sensores ambientais, reforço para compósitos entre outros. Contudo os formatos das partículas são determinantes como requisito para tais aplicações. Neste trabalho, as partículas de ZnO são obtidas via co-precipitação, sendo essa uma das técnicas mais baratas e acessíveis a produção em larga escala. Os parâmetros de processo influenciam no formato final das partículas obtidas, assim estudou-se diferentes velocidades de agitação para a produção das partículas e avaliou-se a forma obtida por microscopia eletrônica de varredura, verificando-se que a taxa de cisalhamento, vinculada à velocidade de agitação mecânica empregada no meio reacional da síntese por co-precipitação implica na variação do formato das partículas formadas.
The Effect of Brand Experience on Brand Equity and Visit Intentions in Virtual Alfamind Store
Authors: Hotama Tiffani Alexia , Kristiyono Yokie Radnan
Published: November 2022

Over the past decade, the retail industry has made a systematic transition, with the advent of online and mobile shopping, reshaping consumer behavior and business models around the world. The COVID-19 pandemic has changed consumer behavior in interacting with stores, so consumers will prefer virtual stores. To provide comprehensive empirical evidence for this study, the authors will review literature relevant to brand experience, their brand equity and visit intentions. Therefore, in this study, we will find out whether there is a positive influence of brand experience on brand equity and visit intentions. This study uses quantitative methods. Data was taken using Google Form which was distributed to 50 people for the preliminary study and 200 respondents for the actual research. Data collection was done by using convenience sampling. The data obtained was processed using the SmartPls 3.0 application. The results of this study indicate that there is a positive influence between sensory and brand equity. There is no positive influence between behavior on brand equity. There is a positive influence between emotional on brand equity. There is a positive influence between intellectual and brand equity. There is no positive influence between sensory and visit intentions. There is no positive influence between behavior on visit intentions. There is a positive influence between emotional on visit intentions. There is no positive influence between intellectual and visit intentions. There is a positive influence of brand equity on visit intentions.
Surgical treatment for chronic tendon injury of finger flexors
Authors: Belinov Nikolay V. , Ushakov Semen A. , Mikhailichenko Ylia V.
Published: November 2022

The purpose of the study: to improve the tactics of surgical treatment of chronic injuries of the flexor tendons of the hand. We analyze results of surgical treatment of long-standing injuries of the flexor tendons of the hand in 20 patients. Patients were examined clinically and X-rayed. The clinical study took into account the fingers anatomy, coarse skin scars in the area of the surgical suture, sensitivity, blood supply, grip strength and flexion-expansion function. The X-ray examination took into account the articular slit in the phalangeal joints, their congruence. We present an objective assessment of the results of surgical treatment of chronic tendon injuries of finger flexors, as well as developed practical recommendations for the surgical treatment of chronic tendon injuries of finger flexors. Conclusions. The results of treatment are directly dependent on the duration of damage exposure. The earlier surgery is performed from the moment of injury, the better the results of treatment. The choice of treatment tactics depends on the pyoinflammatory processes in the injury area, on the injury zone, the condition of the bone-fibrous channels and the individual characteristics of each patient. Patients with chronic tendon injuries in zones II and III and damage exposure for more than 80 days we recommend to perform two-stage tendon grafting. Rehabilitation should be started from the 2nd day of the postoperative period, after the relief of the pain syndrome.
Diagnostic radiology techniques of osteochondropathies
Authors: Yamshikov Oleg N. , Yemelyanova Natalia V. , Boltneva Natalia I. , Drobysheva Nelli I. , Skvortsova Alla V.
Published: November 2022

Osteochondropathies are degenerative and dystrophic diseases affecting various parts of the spongy bones. They are one of the most common diseases of the musculoskeletal system in children and adolescents, leading to disability in the absence of early diagnosis and timely treatment. Despite the fact that the etiology is currently insufficiently studied, there are many modern methods of diagnosing this pathology. Diagnostic radiology techniques are successfully used in modern medicine, but have both advantages and disadvantages. We review literature on radiology techniques for osteochondropathies diagnostic, such as radiography, ultrasound diagnostics, magnetic resonance imaging, computed tomography and some others. We analyze the results of the study of various researchers in this field and make the relevant conclusions. According to most researchers, the examination of patients with suspected osteochondropathy should begin with ultrasound examination. Osteodensitometry, perfusion magnetic resonance imaging, and pneumoarthrography can be used as auxiliary research methods in case of difficulties in making a diagnosis.
Changes in tactics of COVID-19 drug therapy
Authors: Zubtsova Elena E.
Published: November 2022

The severity of the new coronavirus infection COVID-19 stated the difficult task of developing treatments for this previously unknown disease to the medical community. The level of knowledge about the nature of the infection also influences the development of new treatment algorithms. We consider the formation stages of drug therapy of coronavirus infection as research by Russian and foreign medical communities shows previous treatment experience of diseases caused by other coronaviruses representatives. Based on the results and experience of using different groups of drugs, clinical recommendations for the treatment of COVID-19 have been formed. The purpose of the research: to trace the stages of approaches and tactics of drug treatment of a new coronavirus infection. The material for this research is the data obtained in the analysis of modern foreign and national literature on this problem. Conclusion: despite the fact that the COVID-19 epidemic has been spreading around the world for several years, there is still no “gold standard” treatment with 100% effectiveness. In this regard, the issue of forming a competent approach to COVID-19 therapy in order to reduce mortality, increase the effectiveness and safety of the treatment remains relevant today.
CORRELATION OF FREE LARVAE INDEX AND POPULATION DENSITY WITH DENGUE FEVER INCIDENCE RATE
Authors: Nuranisa Ria , Maryanto Yusuf Budi , Isfandiari Muhammad Atoillah
Published: November 2022

Introduction: Dengue Hemorrhagic Fever (DHF) is a disease caused by the dengue virus that infects the body. Dengue is a common viral infection in warm tropical climates. The infection is caused by one of four closely related dengue viruses. The disease now plagues many countries and even more than 100 countries within the WHO, including Africa, the Americas, the Eastern Mediterranean, Southeast Asia, and the Western Pacific. The Americas, Southeast Asia, and the Western Pacific are the most severely affected regions, with Asia representing 70% of the global disease burden. The high incidence rate of DHF in various regions of Indonesia is the background by several factors, one of which is the density of the seaters. The aim of this study was to analyze the correlation between population density and larvae free index and Incidence Rate (IR) Dengue Hemorrhagic Fever (DHF) in Blitar Regency in 2013-2017. Methods: The data were analyzed quantitatively using Spearman correlation tests to analyze relationships between variables. Result: The results of the analysis found there was no correlation between dengue fever incidence rate and larvae free index (p = 0.603 r = -0.117), and there was a correlation between the incidence rate of dengue fever and population density (p = 0.002 r = 0.619). Conclusion:  High population density is a risk factor for DHF events in Blitar Regency, so there needs to be an anticipation of preventive measures such as the implementation of 3M and counseling of the impact of high population density.
PERFORMANCE ANALYSIS ON GPSR PROTOCOL IN VANETS ENVIRONMENT OF OVERLAY NETWORK AND FORWARDING NODE SELECTION METHODS
Authors: Habibi Ahmad Faqih , Radityo Anggoro
Published: November 2022

VANETs are technology in Intelligent Transport Systems (ITS) in driving safety and convenient network services for vehicle users. However, the high mobility of VANETs makes the topology change frequently, resulting in the unavailability of routes and causing communication failures between nodes. Greedy Perimeter Stateless Routing (GPSR) is a routing protocol that solves communication problems in the VANETs environment. GPSR is a geographic routing protocol that uses information on the location of neighbouring nodes and the transmission range to the nearest destination node. But, GPSR does not always find the optimal route because not all nearby nodes can forward packets to their destination during heavy traffic and many intersections.
In this research, the overlay network and forwarding node selection methods will be used to solve problems in the GPSR routing protocol related to communication instability because of changing node positions. Based on the results of testing and analysis that has been carried out on a grid scenario with 50 nodes, the Packet Delivery Ratio results are 32.60. In contrast, the results for the real scenario with the same nodes produce a value of 64. The analysis of End to End Delay in the 50-node grid scenario produces 5.64, while the real scenario results with 50 nodes yield the value of 24.11. The analysis Routing Overhead in the grid scenario with 50 nodes produces a value of 39,978, while the results of the real scenario with 50 nodes get a value of 10,239. With the result of these two analysis methods, it is expected to increase the average value of package delivery.
Desempenho de cultivares de cebolinha em duas épocas de colheita
Authors: Belfort Cristóvam Colombo , Carvalho Lucas Micolas Silva , Paixão Andressa Borges de Almeida , Nolêto Ânderson Silva
Published: November 2022

Componente obrigatório do popular Cheiro Verde em qualquer quadrante do território Nacional, a Cebolinha necessita de diversificação de cultivares de modo a elevar a produtividade sobretudo, nos pequenos cultivos da agricultura familiar. Em função do exposto objetivou-se avaliar o desempenho das cultivares Ibirité, Nebuka e Todo ano, fazendo-o consoante dois momentos de colheita. Para tanto a pesquisa foi realizado na área experimental do Departamento de Fitotecnia, do Centro de Ciências Agrárias (UFPI), entre março e julho de 2019, em blocos casualizados, com 3 repetições, constituindo-se os tratamentos em arranjo fatorial 3 × 2, sendo o primeiro fator cultivar e o segundo, época de colheita (8ª e 10ª após o plantio) sendo considerados parâmetros: altura, número de perfilhos por touceira, profundidade da raiz, comprimento do pseudocaule; peso médio da planta inteira, da raiz, do pseudocaule e folhas. Os resultados mostraram que as cultivares Ibirité e Todo Ano apresentaram comportamento similar, com superioridade da segunda quanto à capacidade de perfilhar. A Nebuka é superior às demais, produzindo quase o dobro de massa fresca no mesmo período, sem registro de perfilhamento. Independente do cultivar, a época de colheita se inicia na 8ª semana, estendendo-se até a 10ª semana, sem comprometimento da qualidade do produto.
Quantum Mechanics, Free Will and the Psychophysical Problem
Authors: Krasin Elisha
Published: November 2022

Nobel Prize-winning physicist Sir Roger Penrose and Stuart Hameroff, a renowned American physician and scientist, have put forward an innovative theory that the human brain has a quantum mechanism located in the microtubular protein system within neurons, known as the "Orch OR" theory. According to the researchers, this mechanism is responsible for the brain's non-computational actions such as consciousness and free will. This theory has been criticized by several researchers from both the biological and physical sides. The purpose of this paper is to examine whether there is a possible basis for this theory in the philosophy of science.
La democracia vista al revés
Authors: Guevara Camargo David
Published: November 2022

Reseña del libro Poesía eras tú, de Francisco Hinojosa. Publicado por editorial Almadía en 2009. La reseña toma en cuenta el concepto de parodia propuesto por Gérard Genette y hace relación de la historia narrada en el libro con la práctica política en el sistema democrático en México en el que una persona sin preparación puede postularse electoralmente para un puesto público.
Migración y prevención de la xenofobia en la frontera
Authors: Hernández Leonel
Published: November 2022

La acentuación de la migración internacional a partir del 2018 en Ciudad Juárez generó que la frontera viviera cambios en las dinámicas institucionales, económicas y sociales de la ciudad. La presencia de personas originarias de distintas partes de Centroamérica y el Caribe ha generado un rico intercambio cultural y social en nuestra frontera, al respecto se comparte un análisis concreto del significado de la migración en Ciudad Juárez y una propuesta para la prevención del rechazo y la xenofobia a la sociedad migrante por parte de la comunidad fronteriza.
Prácticas y experiencias desde la reinserción social
Authors: Vázquez Martínez Alejandro Ernesto
Published: November 2022

La reinserción social es una problemática que comúnmente se aborda desde espacios que se distinguen por la especialización en el tratamiento de ésta. Generalmente, se trata de abordajes que de ninguna manera permiten la participación efectiva de la ciudadanía. Sin embargo, la importancia de los mecanismos que conlleva la reinserción son relevantes para las y los ciudadanos puesto que entraña un tipo de control social, una vía coercitiva que el Estado utiliza para responder a los conflictos derivados de los delitos. Esta es una de las razones que impulsan el proyecto que culmina con este dossier.
Luis Enrique Gutiérrez Casas
Authors: Cosío Joaquín
Published: November 2022

Si debiera hablar sobre la obra plástica de Luis Gutiérrez Casas, lo primero que buscaría hacer es explicarme cómo un doctor en economía pinta.
Manuel Acuña, Rosario de la Peña y el “Nocturno”
Authors: Pérez Amezcua Luis Alberto
Published: November 2022

En este trabajo se hace una reseña del libro Amor romántico y muerte voluntaria. Vida y obra de Manuel Acuña de Abraham Godínez Aldrete. Se hace una descripción de la estructura del texto y sus recursos, de la importancia del libro por la importancia del autor y de la novedad de la "desmitificación" del mito romántico por la actitud de Rosario de la Peña.
Ucrania: la guerra hasta el fin
Authors: Orozco Victor
Published: November 2022

La guerra actual entre Rusia y Ucrania, es la más cercana a lo que se ha conocido como conflictos "centrales" desde la segunda guerra mundial, librados entre las grandes potencias.
Sensibilizar a servidores públicos en perspectiva de género
Authors: Sarricolea Torres Juan Miguel
Published: November 2022

En este artículo comparto mi experiencia como instructor en cursos de capacitación con perspectiva de género dirigidos a servidoras y servidores públicos, enfatizo en los avances, logros y dificultades de este programa gubernamental. Los cursos de capacitación y sensibilización son un avance importante en materia de política pública en la medida en que conjunta una necesidad de la ciudadanía y la intervención del estado. A partir de los cursos impartidos entre 2017 y 2021, sostengo que las y los servidores públicos contaban con una capacitación mínima en los temas más relevantes de género, pero desconocían los orígenes de las desigualdades entre hombres y mujeres, detectando situaciones en las que ellas y ellos participaban o los hacían partícipes. Finalizo este escrito reconociendo los logros obtenidos en la implementación de la perspectiva de género, pero también invitando a continuar su desarrollo para vencer los obstáculos que aún prevalecen.
La construcción del héroe militar en Hollywood
Authors: Sigala Salazar Armando René
Published: November 2022

Es notorio, al contrastar el círculo del héroe planteado por Joseph Campbell en su libro El Héroe de las Mil Caras, con las películas que se han producido en Hollywood en torno a conflictos bélicos, que en Estados Unidos se ha hecho un esfuerzo para posicionar al militar norteamericano como una figura heroica y, de esta manera, reclutar jóvenes para el ejército mientras se vende al mundo una imagen bondadosa y heroica de dicha nación. Un ejemplo de lo anterior es la película Top Gun de 1986.
Un juego para contar historias
Authors: Caldera Chacón Jaime Humberto
Published: November 2022

El ser humano tiene la necesidad de comunicar y contar historias que son parte de su entorno cotidiano y nos transportan a mundos de fantasía. Estas historias son registradas en libros, series de televisión, películas o videojuegos
La genetíca de Antígona
Authors: Lucero Loera Gibran Alejandro
Published: November 2022

El presente texto reseña la obra "Antígonas – un ensayo", del dramaturgo chihuahuense Raúl Valles, la cual fue publicada en la colección Dramaturgia doméstica (2019), por la el Instito de Cultura del Municipio, Chihuahua.
“WHITE GOLD” OF UKRAINE | LITHIUM MINERALISATION
Authors: Liventseva Hanna
Published: November 2022

Lithium belongs to the group of «battery elements». Scientists predict the «white gold», which is the lightest of metals, a «brilliant» future!
The Effectiveness of Science Handouts Based on Critical Thinking Skills on the Diversity of Living Things
Authors: Panjaitan Ramayanti , Dharmono Dharmono , Suyidno Suyidno
Published: November 2022

The development of critical thinking skills is one of the key factors to face the opportunities and challenges of life in the industrial era 4.0. However, this skill has not been trained properly. Therefore, the purpose of writing this paper is to analyze the effectiveness of science handouts on the material diversity of living things to improve students' critical thinking skills. This study uses formative evaluation with Tessmer Model, which is limited to small group and field tests. The trial used a one group pretest and posttest design, for a small group test on 12 students and a field test on 20 class VIII students of SMPN 1 Sungai Durian. Collecting data through critical thinking tests and interviews. The results of the research on the small group and field tests showed: (1) students' skills in interpretation, analysis, explanation, evaluation, and inference were initially low to moderate; and (2) students' critical thinking skills increased significantly at = 5%, with n-gain in the moderate criteria. Thus, the science handout based on critical thinking skills that was developed is effectively used in science learning

Pengembangan keterampilan berpikir kritis menjadi salah satu faktor kunci untuk menghadapi peluang dan tantangan kehidupan di era industri 4.0. Namun, keterampilan ini belum dilatihkan dengan baik. Oleh karena itu, tujuan penulisan makalah ini adalah menganalisis keefektifan dari handout IPA pada materi keanekaramagaman makhluk hidup untuk meningkatkan keterampilan berpikir kritis siswa. Penelitian ini menggunakan desain evaluasi formatif dengan model Tessmer. Uji coba menggunakan one group pretest and posttest design, untuk small group test pada 12 siswa dan field test pada 20 siswa kelas VIII SMPN 1 Sungai Durian. Pengumpulan data melalui instrumen tes berpikir kritis dan wawancara. Hasil penelitian pada small group maupun field test menunjukkan: (1) kemampuan siswa dalam interpretasi, analisis, eksplanasi, evaluasi, dan inferensi yang awalnya masih rendah menjadi sedang; dan (2) keterampilan berpikir kritis siswa mengalami peningkatan secara signifikan pada a = 5%, dengan n-gain dalam kriteria sedang. Dengan demikian, handout IPA berbasis keterampilan berpikir kritis yang dikembangkan adalah efektif digunakan dalam pembelajaran IPA.
A 𝘬-means analysis of the voltage response of a soil-based microbial fuel cell to an injected military-relevant compound (urea)
Authors: Jones Robert , Creagar Molly , Musty Michael , Reynolds Randall , Slone Scott , Barbato Robyn
Published: November 2022

Biotechnology offers new ways to use biological processes as environmental sensors. For example, in soil microbial fuel cells (MFCs), soil electro-genic microorganisms are recruited to electrodes embedded in soil and produce electricity (measured by voltage) through the breakdown of substrate. Because the voltage produced by the electrogenic microbes is a function of their environment, we hypothesize that the voltage may change in a characteristic manner given environmental disturbances, such as the contamination by exogenous material, in a way that can be modelled and serve as a diagnostic. In this study, we aimed to statistically analyze voltage from soil MFCs injected with urea as a proxy for gross contamination. Specifically, we used 𝘬-means clustering to discern between voltage output before and after the injection of urea. Our results showed that the 𝘬-means algorithm recognized 4–6 distinctive voltage regions, defining unique periods of the MFC voltage that clearly identify pre- and postinjection and other phases of the MFC lifecycle. This demonstrates that 𝘬-means can identify voltage patterns temporally, which could be further improve the sensing capabilities of MFCs by identifying specific regions of dissimilarity in voltage, indicating changes in the environment.
Validación del método craneométrico de Knebelman en alumnos de dos Escuelas de Estomatología Lima-Perú
Authors:   , Acuña Pfuyo Johanna
Published: November 2022

Objetivo: Comprobar la correlación en medio de la distancia del canto externo del ojo-pared anterior del conducto auditivo externo con la subnasal-mentón en proporción con el método craneométrico de Knebelman. Materiales y métodos: La muestra examinada fue formada por 100 personas con edades de 20 a 28, con dentadura permanente natural. Fueron clasificados de acuerdo al tipo facial, a través del índice Morfológico Facial. En concordancia con el método de Knebelman, las distancias ojo-oreja, derechas e izquierdas y subnasal-mentón han sido medidas con un craneómetro. Seguidamente fue situado entre la parte inferior de la mandíbula y la parte de la espina nasal, con los maxilares en posición intercuspal, de esa forma la distancia subnasaly la del mentón fue medida y registrada a nivel de la línea media del rostro. Por último, fueron empleadas las pruebas de Anova y la de correlación de Pearson. Resultados: No se halló una diferencia estadística relevante entre la distancia del ojo y la oreja del lado derecho e izquierdo respecto a la subnasal del mentón de acuerdo con el biotipo facial. Valores equivalentes se hallaron durante la comparación de las tres distancias sin tomar en consideración el tipo facial (p= 0.362). La correspondencia en ambos manifestó una mayor correlación entre la distancia ojo-oreja del lado derecho con respecto al área subnasal- mentón (0.99 y 0. 87). Conclusiones: Se evidencio que existe una correlación entre la variable de la distancia canto externo del ojo y la pared anterior del conducto auditivo externo con el área subnasal-mentón conforme al método craneométrico de Knebelman, obteniéndose una diferencia menor a un milímetro en ambas.
Asociación entre el grado de fragilidad y la situación sociofamiliar de adultos mayores de una unidad de visita domiciliaria de Lima-Perú
Authors:   , Leon Lopez Ana Paula , Pacsi Morales Andrea Giuliana
Published: November 2022

Objetivo: Determinar la asociación entre el grado de fragilidad y la situación socio familiar de adultos mayores de una unidad de visita domiciliaria de Lima-Perú en el Hospital Militar Geriátrico. Material y método: El estudio es un análisis secundario de base de datos de dominio público en Figshare; se confeccionó en los meses de septiembre a noviembre del 2021 mediante videollamada en el Hospital Militar Geriátrico, consta de 88 pacientes mayores de 60 años de la unidad de visita domiciliaria. Se realizó un análisis descriptivo de las variables, calculando medidas de tendencia central, para luego realizarse el análisis bivariado mediante la prueba Chi2 de Pearson, ANOVA, H-de Kruskal Wallis, y Test de correlación de Spearman, según el tipo y la normalidad de las variables; además, para el análisis multivariado realizamos regresión lineal simple y múltiple para analizar la asociación entre la Fragilidad (Puntaje de Edmonton) y la Situación sociofamiliar (Gijón categorizado). Resultados: Se encontró asociación entre el índice de comorbilidad de Charlson e índice de Barthel, con el grado de Fragilidad, con una correlación del 32.94% entre el índice de comorbilidad de Charlson y el puntaje de Edmonton, y una correlación negativa de 64% entre el índice de Barthel y el puntaje de Edmonton. Se determinó la asociación entre el Grado de Fragilidad y las variables situación familiar y relaciones sociales. Para situación familiar se empleó ANOVA y se obtuvo un p estadísticamente significativo (p=0.0005); mientras que para la variable relaciones sociales, se empleó Kruskal Wallis por el cual resultó un p estadísticamente significativo (p=0.0001). Conclusión: Existe relación entre el grado de fragilidad y la situación sociofamiliar de adultos mayores de una Unidad de Visita Domiciliaria de Lima-Perú.
Evaluación de un sistema de gestión de seguridad de la información basado en la norma ISO 27001:2013, en la Marina de Guerra del Perú
Authors:   , Amado Garfias Alonso Javier
Published: November 2022

El propósito del presente trabajo de investigación tiene como objeto el demostrar que, debido a la complejidad organizacional, misión, y a las múltiples funciones que desempeña la Marina de Guerra del Perú (MGP), se evidencia la necesidad contar con un sistema de gestión de seguridad de la información (SGSI) basado en el estándar ISO/IEC 27001. Para sustentar esta necesidad, se ha identificado la correlación existente entre las variables seguridad de la información y sistema de gestión. El enfoque que se ha asumido es el cuantitativo, ya que este busca demostrar una hipótesis a partir de mediciones numéricas y estadísticas. Se ha seleccionado un diseño transeccional del tipo correlacional causal. Para la recopilación de datos se utilizó la técnica de la encuesta, y como instrumento el cuestionario de preguntas del tipo cerradas. Este ha sido aplicado a una muestra del 4.36% de la población de trabajadores de la Marina Guerra del Perú, que por su especialidad se encuentran o se han encontrado involucradas en la SI en la Institución. Cabe precisar que, usando el Alfa de Cronbach se obtuvo en la variable seguridad de la información 0.850 y en la variable de sistema de gestión 0.931, demostrando la confiabilidad de la aplicación de los instrumentos. En cuanto al correlación Rho de Spearman se obtuvo un 0.922 con una correlación positiva con un grado de significancia estadística de la prueba de p= 0.0 (siendo p<0.5), por lo cual se acepta la hipótesis del investigador. Por consiguiente, es válido afirmar que existe relación significativa entre el sistema de gestión basado en la Norma ISO 27001:2013 y la seguridad de la información en la Marina de Guerra del Perú.
La práctica del trueque como recurso turístico en el distrito de San Pedro, Canchis - Cusco
Authors:   , Aslla Rabanal Rosario del Pilar
Published: November 2022

La presente investigación se desarrolló en el distrito de San Pedro, provincia de Canchis, departamento Cusco. El objetivo fue analizar la práctica del trueque como recurso turístico en el distrito de San Pedro. La metodología está basada en el paradigma interpretativo; para la recolección de información y su posterior análisis y síntesis se utilizaron entrevistas semiestructuradas a las autoridades del distrito y sus comunidades; y a las personas que practican o han sido observadores del trueque; se elaboró cuestionarios para las personas que venían a realizar el trueque durante la feria que se realiza el 28 y 29 de junio; y fichas de inventario, en las que se identificaron los recursos turísticos con los que cuenta el distrito de San Pedro. Los resultados obtenidos fueron la descripción del proceso del trueque, las características de la población tanto local como la que viene a realizar el trueque en la feria y el inventario de los recursos turísticos con los que cuenta el distrito de San Pedro. Lograr que el trueque sea un recurso turístico más en el distrito de San Pedro ayudaría a darle valor e incentivar a la población a practicarlo, para evitar la desaparición de esta práctica puesto que es parte de la identidad cultural del distrito de San Pedro.
Distribution and ecological risk evaluation of 12 chiral pesticides in surface waters and surface sediments of the Wuhan section of Yangtze River basin (China)
Authors: Chen Xiaoyu , Zhuo Haihua , Li Ming , Peng Jiao , Zhou Jia , Jin Shiwei
Published: November 2022

To research the environmental behavior of chiral pesticides in waters and sediments in the Wuhan section of the Yangtze River basin and evaluate their ecological risk, a quantitative method for the detection of 12 chiral pesticides was established based on ultra performance liquid chromatography-electrospray (UPLC) ionization (ESI) tandem triple quadrupole mass spectrometry. The analysis results suggest that the overall a low detection rates and concentrations of the 12 chiral pesticides in surface waters and surface sediments, but the concentrations of paclobutrazol, tebuconazole and hexaconazole were relatively high among them. All the chiral pesticides detected in this study area have stereoselectivity, with S-Paclobutrazol and (-)-Hexaconazole being preferentially degraded in most of the study area, while the stereoselective degradation pattern of tebuconazole was more complicated. ECOSAR simulation method allows deriving that hexaconazole poseded a low (or lower) ecological risk to aquatic algae and paclobutrazol had a low (or even higher) ecological risk to whole aquatic organisms. The levels of most other chiral pesticide residues were acceptable.
Anxiety, Depression, and Stress among Female Community Health Volunteers during COVID-19 Pandemic in Province 1, Nepal
Authors: Basnet Saraswati , Silwal Suveckshya
Published: November 2022

Introduction
Female Community Health Volunteers (FCHVs) are an integral part of various community-based health programs visiting households and communities to screen for diseases, risk factors and educate on basic health issues. A profound and wide range of psychological health issues (anxiety, stress, and depression) at the individual, community, and international levels has been reported during the COVID-19 outbreaks.
Methods
An analytical cross-sectional study design was used to assess the anxiety, depression, and stress level among rural and urban FCHVs during the COVID-19 in Province 1. A multistage random sampling technique was be used the select the sample. The total sample size was 384. Semi-structured structured valid Depression, Anxiety and Stress Scale (DASS-21) was used for measuring the Depression, Anxiety, and Stress level of FCHVs. Descriptive analysis i.e. frequency, percentage, mean, median, and standard deviation was used to assess the level of anxiety, depression, and stress among adults. Inferential analysis i.e. logistic regression was used to find the association between dependent and selected demographic variables.
Findings
The study revealed that the prevalence of extremely severe levels of anxiety was 35.5% of the Female Community Health Volunteers (FCHVs) 23.4% of moderate level of stress and 21.6% of respondents were a severe level of depression respectively. There is significant association between level anxiety and ethnicity (p = 0.040; OR = 1.562; CI = 1.021–2.390), occupation (p = 0.013; OR = 3.861; CI = 1.325–11.249) and place of residence (p ≤ 0.001; OR = 1.959; CI = 1.470–3.413). There is significant association between level stress and occupation (p = 0.037; OR = 3.363; CI = 1.074–10.531) place of residence (p = 0. 005; OR = 1.817; CI = 1.193–2.767). There is significant association between level depression and ethnicity, occupation (p ≤ 0.001; OR = 2.117; OR = 1.391–3.222) and place of residence (p = 0. 026; OR = 3.371; CI = 1.158–9.812).
The study concluded that the female community Health Volunteers was mild, moderate, severe and extremely severe level of anxiety, stress and depression level so prompt psychiatric intervention to enhance the mental wellbeing of FCHVs.
In vitro fertilization outcomes of frozen-thawed embryo transfer are better with hatched blastocysts than with hatching blastocysts
Authors: Kim Ji Hye , Park Eun A , Yoon Tae Ki , Kim Myung Joo , Lee Jung Hyun , Song Ga Yun , Choi Kyung Hee , Lee Kyung-Ah , Hur Yun Jung , Choi Seung Young , Jo Eun-Hye , Kim You Shin
Published: November 2022

Purpose
The aim of this study was to elucidate the effect of hatching status on in vitro fertilization outcomes in frozen–thawed blastocyst transfer cycles.
Methods
Frozen–thawed embryo transfer (FET) cycles performed at a single fertility center between 2016 and 2021 were retrospectively assessed. Analyses were restricted to 6821 frozen–thawed blastocyst transfers in women aged 24–47 years. For optimal comparability, double embryo transfer cycles consisting of one hatching and one hatched blastocyst were excluded. Implantation and pregnancy rates were evaluated and compared between subgroups, based on patients’ age (≤ 38 years vs. >38 years), blastocyst grade (good vs. bad grade) and number of transferred embryos (single embryo transfer [SET] vs. double embryo transfer [DET]).
Results
Hatched blastocyst transfer was associated with higher implantation and clinical pregnancy rates in the SET group (15.7% and 15.6%, respectively; p < 0.05). The transfer of two hatched blastocysts had a trend of higher implantation and clinical pregnancy rates, compared to the transfer of two hatching blastocysts (19.5% and 20.4%, respectively; p < 0.05) in the DET group. In the hatched blastocyst transfer group, the clinical pregnancy and implantation rates were higher, regardless of a woman’s age and embryo quality.
Conclusion
The IVF treatment outcomes improved when the blastocysts were hatched during FET cycles. Hence, hatched blastocyst transfer in FET cycles shall be considered as a superior method in IVF practice.
Production of Biodiesel From Phyllanthus emblica Seeds Using Activated Charcoal as Heterogenous Catalyst
Authors: V Sunil , V Manigandan A , K Cholapandian , P Dhasarathan
Published: November 2022

Biodiesel can be a vital substitute for the traditional fossil fuels. Biodiesel is not only renewable but also contributes to environment by reducing green gas emission. But using edible crops as source for biofuel production can cause food security problems. In the present investigation, seeds of Phyllanthus emblica which is a nonedible source was used for biodiesel production. Seeds were collected and dried and then converted to thin powder which was used as feedstock. Oil extraction was optimized using different extraction methods. GC-FID was carried out for analysing the fatty acid profile of the extracted oil. Dimethyl carbonate was used instead of methanol and activated charcoal was used as catalyst for efficient biodiesel production. Activated charcoal was produced and analyzed with FTIR and SEM to study about morphology of the activated charcoal. Transesterification reaction parameters were optimized. Temperature of 40, 60 and 80°C, DMC to oil molar ratio of 2:1, 4:1, 6:1, 8:1 and catalyst concentration of 1.5, 2 and 2.5wt% in relation to oil was carried out to find the efficient reaction conditions. GC-MS was carried out to confirm the presence of fatty acid alkyl esters.
Study on Influence of Non-submerged Rigid Vegetation Array Spacing on Surface Water Flow
Authors: Wang Wenjun , Zhang Shengtang , Zhang Jingzhou , Ma Lijun , Wang Chuantao
Published: November 2022

Artificial planting vegetation can slow down water erosion and promote material deposition, which has the significance of ecological civilization construction. In order to explore the effect of vegetation array spacing on flow pattern and hydraulic characteristics in surface water flow, a non-submerged rigid vegetation hydraulics model with 5% coverage (210 plants) was established based on the actual situation. The vegetation with the ratio of the width of the vegetation area d to the width of the gap area D of 1 was evenly arranged as the control group, and the d/D was 0.625,0.401,0.25,0.142 and 0.0626 as the experimental group. Based on the experimental analysis and Fluent numerical simulation, the vegetation with the same coverage is analyzed as the width of the vegetation area becomes larger and larger, that is, the vegetation arrangement tends to be uniform, the results showed : Frictional head loss along the way and Darcy-Weisbach resistance coefficient increase, water blocking effect is obvious; under the influence of water depth, the flow velocity decreases and the Reynolds stress increases in the lower half of water depth; surface velocity decreases and turbulent kinetic energy increases on non-submerged vegetation; water blocking effect of vegetation zone is better than gap zone. It consumes water energy to achieve water blocking effect and prevents the surface of water flow from being excessively washed, which has certain value for flood control and disaster reduction.