bluuebunny/crossref_metadata_2025 huggingface dataset:
Influence of Coloured Shade Nets On Growth And Biochemical Constituents In Four Species of Ocimum
Authors: VIJ Lavanya , Sharma Rajni , Chhabra Rohit
Published: October 2022

Effects of different coloured shade nets (red, green, black, green, white net) and control (without net) on the biochemical and growth responses in four Ocimum spp. namely O. tenuiflorum L., O. sanctum L., O. basilicum L. and O. gratissimum L. were investigated. Results showed that plants kept under red net consistently outperformed other treatments recording significantly higher growth and biochemical characteristics for all selected Ocimum spp. after 120 days of transplantation. Parameters like shoot length (128.77 ± 4.00 cm), root length (81.48 ± 0.75 cm), leaf number (319.10 ± 3.38), total fresh biomass (158.17 ± 12.82 g/plant) and total dry biomass (63.88 ± 1.37 g/plant) witnessed a 3.38, 2.95, 2.76, 4.17 and 5.16% increase, respectively under red net over control. Plants under red net also recorded a significant increase of 9.68, 14.10 and 28.18% for total phenols (127.50 ± 2.95 mg/g DW), flavonoids (18.33 ± 2.71 mg/g DW) and alkaloids (32.31 ± 2.87 mg/g DW), respectively.
Bangladesh J. Bot. 51(3): 547-554, 2022 (September)
Diversity of Wild Edible Mushroom In Gunung Tukung Gede Nature Reserves, Indonesia
Authors: Khastini Rida Oktorida , Maryani Nani , Sari Indah Juwita , Lestari Iing Dwi , Usman - , Putri Cinddy Febyanti
Published: October 2022

Wild edible mushrooms diversity utilized by the community in Gunung Tukung Gede (GTG) nature reserves were observed and documented. The exploration was carried out during September 2018 – June 2019 to collect wild mushrooms and gather information on utilizing wild edible mushrooms by interviewing the indigenous community. About 75 local people who live in Sukatani, Pasilaja, and Cimacan village in GTG nature reserves participated and gave information on utilizing wild mushrooms. The reported edible mushrooms were: Auricularia polytricha, Coprinus sp., Termitomyces albuminosus, T. eurhizus, Boletus edulis, Cantharellus cibarius, Marasmiellus sp., Mycea sp., Pleurotus sp., Volvariella volvacea, Lentinus sajor-caju, Psathyrella sp., Oudemansiella sp., Schizophyllum commune, and Scleroderma sinnamariense. The outcome will contribute information to preserve biodiversity and ecosystems in GTG nature reserves and potential edible mushroom to be used for improving food security.
Bangladesh J. Bot. 51(3): 625-629, 2022 (September)
Technical Review of MPPT Algorithms for Solar Photovoltaic System: SWOT Analysis of MPPT Algorithms
Authors: Awan Muhammad Mateen Afzal
Published: October 2022

To continuously operate the Photovoltaic (PV) system at its Maximum Power Point (MPP) under changing weather is a challenging task. To accomplish this, multiple MPP Tracking (MPPT) algorithms have been proposed, which can be portioned into two: 1) Conventional algorithms, have the strengths of a simple structure, fewer computations, and low memory requirement, and cheap implementation. Whereas, trapping under Partial Shading Conditions (PSC), steady-state oscillations, and system dependency are the associated drawbacks. Conversely, 2) Soft computing algorithms, perform efficiently under all weather conditions with zero steady-state oscillations, and are system independent. The structural complexities, giant computations, huge memory requirements, and expensive implementation, are the accompanying concerns. The core contribution of this study is to present a deep analysis of all the MPPT algorithms at the standard benchmarks defined in the published literature, for the readers so they could decide which algorithm to choose under certain circumstances.
Evaluación de impacto de recursos energéticos distribuidos sobre redes de distribución en baja tensión
Authors: López Lucas Gastón , Degadillo Angélica , Sanchez Varretti Fabricio
Published: October 2022

El presente estudio se basa en determinar el impacto sobre la red eléctrica que provoca la generación distribuida y la posibilidad de almacenamiento, asociada al autoconsumo fotovoltaico de clientes conectados en las redes baja tensión. Se ha realizado un análisis detallado, con modelos reales de redes de distribución, valores de demanda de energía y determinación de perfiles de generación articulado, mediante la utilización de software PSS/E. En el proyecto se ha analizado múltiples escenarios de desarrollo de autoconsumo. El análisis contempla las diferencias y condicionamientos de la magnitud de las placas fotovoltaicas que se deciden instalar. Así mismo, se ha contemplado la posibilidad de contar con instalaciones de acumulación, cuya función es captar la diferencia entre la generación y la demanda. En esta línea se han analizado distintos escenarios de adopción de autoconsumo por los consumidores, desde una adopción nula, hasta una adopción máxima por el total de consumidores. Al evaluar el impacto del agregado de fuentes distribuidas en redes de baja tensión sobre los perfiles de tensión en un proceso de simulación, que involucra análisis de corridas de flujo de potencia, se determina cual es el real impacto de los recursos energéticos distribuidos sobre las redes de distribución actuales.
Análisis y Rediseño de una Red de Centros de Atención Primaria de la Salud
Authors: Moreno Graciela , Blanco Aníbal , Moscoso Nebel
Published: October 2022

El primer nivel de atención en salud, está organizado en nuestro país en base a Centros de Atención Primaria de la Salud (CAPS). Las redes de CAPS de las ciudades brindan servicios sanitarios preventivos a la sociedad en general y en especial a la población que no posee cobertura médica. A pesar de los esfuerzos de los municipios para ir adaptando el sistema a la necesidad de sus poblaciones, la dinámica poblacional, y el crecimiento demográfico y territorial hace que los CAPS no siempre estén distribuidos de forma adecuada, o presten el tipo y volumen de servicio en niveles óptimos. El objetivo principal de este trabajo es analizar información relevante sobre los CAPS en el partido de Bahía Blanca, mediante el estudio de la necesidad, la demanda y la oferta de servicios del primer nivel y proponer rediseños de la red con el objeto de mejorar los indicadores de acceso. Para ello se implementó un modelo matemático de localización óptima integrado con un Sistema de Información Geográfico (SIG) para la visualización de resultados.
Avances en la aplicabilidad del Método de Elementos Finitos para el análisis estructural de construcciones de adobe en la provincia de Jujuy
Authors: Losa Nicolás , Tomasi Jorge , Sánchez Pablo
Published: October 2022

La mampostería de adobe es una técnica constructiva tradicional que se mantiene vigente en zonas sísmicamente activas de la Argentina, como lo es el Noroeste Argentino. Su presencia en gran parte del patrimonio construido de dicha región, y su rol primordial en la edificación urbana actual, ameritan el estudio de herramientas para su correcto análisis estructural, en la búsqueda de diseñar respuestas eficientes al riesgo sísmico subyacente. Este trabajo presenta una implementación metodológica, basada en un trabajo conjunto entre relevamiento de campo y tareas de gabinete, que busca aplicar el Método de Elementos Finitos como herramienta de análisis estructural en el distrito de Tilcara, provincia de Jujuy.
Aplicación de tecnologías Semánticas y de Blockchain para la integración horizontal en el ámbito de la Industria 4.0
Authors: Alvarado Domínguez Johnny , Vegetti Marcela , Gonnet Silvio
Published: October 2022

Este trabajo presenta los avances del proyecto de tesis “Aplicación de tecnologías semánticas y Blockchain para la integración horizontal en el ámbito de la industria 4.0”, de la carrera de doctorado en Ingeniería mención Industrial de la Universidad Tecnológica Nacional. El objetivo es la definición e implementación de una infraestructura que soporte el modelado semántico de contratos inteligentes para alcanzar la trazabilidad de origen y gestión de la cadena de suministro en el contexto de la industria 4.0. La infraestructura constará de Ontologías de dominio que permita la representación del conocimiento de las empresas que hacen parte de la cadena de suministro, Ontologías que formalicen la semántica de los smart contracts y una red de Ontologías que abarquen las anteriores, una ontología de referencia con los conceptos comunes y una definición de los mapeos comunes para realizar el alineamiento entre los conceptos pertenecientes a las distintas ontologías de la red.
Placas de cerramiento a partir de plásticos reciclados para uso en viviendas sociales
Authors: Gaetan María Laura , Gaggino Rosana , Peisino Lucas Ernesto , Baronetto Carlos
Published: October 2022

Esta tesis forma parte de la línea de investigación que propone el desarrollo de un nuevo material compuesto utilizando residuos de polímeros plásticos, aprovechando sus características en la producción de componentes constructivos con propiedades técnicas aptas según las normas vigentes en nuestro país, a través de un proceso productivo innovador y sustentable.Además, se reflexionará sobre los principios de sustentabilidad en la construcción, basados en la reutilización de residuos como aporte a la descontaminación del medioambiente.Se pretenden obtener placas encastrables que cumplan con las normas vigentes en nuestro país para su uso en cerramientos de viviendas. Como ventajas técnicas se espera que estos componentes sean más livianos que los tradicionales, con un requerimiento de cimientos y estructura menores, baja absorción de agua, hinchamiento nulo bajo la acción de agua, reducción de riesgos de fisuras por retracción en juntas y uniones.
Composites de raquis de palma africana y polietileno de baja densidad: Efecto de la compatibilidad fibra-matriz en el comportamiento mecánico
Authors: Valle Alvarez Lauro Vladimir , Kreiker Jerónimo , Kreiker Jerónimo , Cadena Francisco
Published: October 2022

Los residuos de raquis de palma africana aún no disponen de mecanismos que garanticen una gestión efectiva, pero sobre todo sustentable. En este contexto, el objetivo del estudio doctoral es el aprovechamiento de estos residuos en el desarrollo de composites con diferentes matrices poliméricas. En el presente trabajo se evalúa el efecto de tres agentes compatibilizantes en las propiedades mecánicas a tensión de composites de polietileno y raquis de palma africana. Los valores de las propiedades de tensión estudiadas evidenciaron un comportamiento similar entre composites con y sin compatabilizante comercial. De igual forma, se observó que la modificación aplicada a las fibras incrementa ligeramente el módulo elástico y la resistencia a la tensión. Sin embargo, dichas modificaciones tuvieron efecto negativo en la elongación a la rotura.
Gestión sostenible de áreas urbanas. Evaluación y diagnóstico mediante herramientas de geomática
Authors: Colli María Florencia , Correa Érica N. , Martinez Claudia F.
Published: October 2022

En el presente se exponen los avances de tesis doctoral, donde concluida la etapa de zonificación climática local se analizan y caracterizan las diferentes zonas a partir de índices espectrales. Se han aplicado variados índices para analizar las dimensiones vegetación, humedad, estrés hídrico e impermeabilización por uso urbano, pero se va a presentar únicamente la aplicación del índice espectral NDVI, utilizado para analizar y cuantificar la cobertura vegetal.Los resultados muestran pequeñas diferenciaciones entre la zona 2 y 3, con valores entre 0,25 y 0,3 para decaer en las zonas 5 y 6 a valores que dificultosamente alcanzan los 0,2. Se produce un aumento significativo en las zonas 8 y 9, que poseen mejores condiciones de vegetación. Esto permite identificar las zonas que necesitan intervención para lograr una rehabilitación de la canopia urbana, siendo el caso de la LCZ 6, donde se presentan los peores resultados del índice.
Microzonificación sísmica basada en efectos de sitio para el área metropolitana de Mendoza
Authors: Giolo Emilce Gisela , Frau Carlos Daniel , Guillier Bertrand , Tornello Miguel Eduardo
Published: October 2022

En este trabajo se presenta un aspecto del ordenamiento territorial en zonas sísmicas, el efecto de sitio. Se escoge para el desarrollo de este, un área de gran densidad poblacional en la Ciudad de Mendoza, Argentina para realizar una microzonificación sísmica en base a frecuencias naturales de suelo que se obtienen mediante el procedimiento del cociente espectral H/V, el cual es un procedimiento empírico basado en vibraciones ambientales. De esta manera se pretende identificar las áreas expuestas al fenómeno de amplificación sísmica cuando sobrevenga un terremoto de mediana o elevada magnitud. Este estudio se enmarca dentro de los proyectos de investigación ECUTNME0004343 y ECECBME0008099TC, y permitirá contar con información de utilidad para la organización del uso del suelo y la planificación urbana.
Síntesis de un material esférico híbrido entre una organoarcilla y alginato para la adsorción de omeprazol
Authors: Correa Hilda , Fernández Mariela , Montes María
Published: October 2022

Una problemática ambiental actual es la detección de contaminantes emergentes en cuerpos de agua. Para reducir estos contaminantes se utilizan múltiples sistemas de eliminación, siendo uno de los más efectivos la adsorción. Con el objetivo de eliminar contaminantes emergentes, se ha investigado la eficacia de nuevos materiales adsorbentes naturales, abundantes y económicos. La utilización de estos nuevos adsorbentes ha demostrado su total aplicación para adsorber gran número de contaminantes. El presente trabajo presenta resultados preliminares de adsorción de omeprazol en materiales adsorbentes híbridos desarrollados en base a una montmorillonita natural, y montmorillonita modificada con lecitina (Orgalg), utilizando un proceso de esferización para el conformado de perla mediante una matriz de alginato. Los materiales obtenidos fueron caracterizados por Potencial Zeta, obteniéndose una carga superficial negativa para todos los materiales adsorbentes, siendo mayor para Orgalg y la mayor capacidad de adsorción fueron de 4,15 ±0.01 mg/g para las perlas Orgalg.
Optimización de las condiciones de reacción para la obtención de benzaldehído empleando V/Ti-PILC
Authors: Sabre Ema , Cánepa Analía , Casuscelli Sandra , Cortés Corberán Vicente
Published: October 2022

Se sintetizaron materiales con propiedades catalíticas a partir de una arcilla natural de Argentina. El empleo de este material como soporte es importante debido a su bajo costo por su abundancia en la naturaleza. Posteriormente mediante el proceso de pilareado se obtuvieron las arcillas pilareadas con Ti, las cuales fueron modificadas con diferentes contenidos de V. Todos los materiales mostraron un aumento significativo en el espaciamiento basal, la superficie específica y el volumen de poros respecto a la arcilla original, lo que confirmó la presencia de pilares que expandieron las capas de la misma. Además, se estudió la variación de las condiciones de reacción en la oxidación de alcohol bencílico a benzaldehído. Así, el mayor rendimiento a benzaldehído (10,29%) con una selectividad del 95%, se alcanzó con una carga de V en Ti-PILC del 0,5% p/p, con una concentración de catalizador de 9 g.L-1, empleando acetonitrilo como solvente.
Desarrollo de nanomateriales basados en carbono y óxidos de hierro mesoporosos con propiedades magnéticas avanzadas y fotosensibilidad bajo radiación UVA-Vis
Authors: Fornasin Emiliano Gabriel , Elías Verónica , Cuello Natalia , Eimer Griselda
Published: October 2022

En este plan se propone diseñar, sintetizar y caracterizar nanoestructuras basadas en óxidos de hierro mesoporosos, así como soportes de carbono mesoporoso como nanoreactores para el desarrollo de nanoespecies de hierro, en la búsqueda de sólidos con propiedades magnéticas específicas y fotosensibilidad desplazada hacia la región visible del espectro. Se prevé que sólidos con estas características puedan ser eficazmente aplicados en Procesos Avanzados de Oxidación para degradar contaminantes orgánicos en agua (fármacos o clorofenoles) mediante su activación con radiación UVA-Vis que promueva la generación de radicales oxidantes con una utilización más eficiente de la luz solar. En sentido, existen principalmente dos rutas para sintetizar óxidos no silíceos mesoporosos ordenados: "soft-templating" o moldeado suave y "hard-templating" o moldeado duro. En la ruta de moldeado suave, el proceso de síntesis involucra el uso de surfactantes o co-polímeros de bloque como plantillas blandas, mientras que en la ruta de moldeado duro se usan como plantillas matrices mesoporosas ordenadas. Ambas rutas de síntesis serán aplicadas para la obtención de los materiales.
Prediseño de un Convertidor Pendular de Energía Undimotriz a Pequeña Escala
Authors: Rojas Lisandro M. , Dotti Franco E. , Machado Sebastian P.
Published: October 2022

Mediante un estudio computacional se realiza el prediseño de un prototipo convertidor de energía undimotriz, basado en la dinámica del péndulo paramétrico. El foco de la investigación apunta a una aplicación a pequeña escala que se planea para un futuro cercano en el Estuario de Bahía Blanca. Se formula así un modelo matemático que aborda de manera simplificada la dinámica del convertidor. Mediante el uso de este modelo, se resuelve un problema simple de optimización empleando distintos parámetros de diseño del dispositivo, buscando dar con la configuración óptima en términos de generación de energía cinética. El estudio establece además las condiciones de diseño bajo las cuales la posición de reposo resulte una respuesta inestable del sistema pendular. Esto implica minimizar el tiempo en el que el dispositivo se halle imposibilitado de generar energía. Se muestra que, con un buen diseño, un convertidor pendular puede generar unos 20 W de potencia. Esto representa un valor razonable teniendo en cuenta la baja densidad energética del oleaje típica en los estuarios.
Analítica Prescriptiva en VRP mediante Aprendizaje por Refuerzo y Flujos de Eventos
Authors: Schab Esteban Alejandro , Piccoli María Fabiana , Casanova Pietroboni Carlos Antonio
Published: October 2022

Los procesos de negocio exigen tomar decisiones rápidas para lograr la adaptación constante a los cambios en búsqueda de mejorar el desempeño y aprovechar las oportunidades. Resulta clave contar con analíticas que transformen los datos en conocimiento para la toma de decisiones. En este trabajo se introduce una línea de investigación enfocada en la analítica prescriptiva, capaz de calcular acciones a ser ejecutadas en el momento (decisiones operativas) o en el futuro (decisiones tácticas y/o estratégicas) para lograr un objetivo deseado, en problemas de enrutamiento de vehículos (VRP), y se presentan los avances y resultados obtenidos. El cálculo de las acciones involucra el procesamiento del flujo de eventos del negocio en forma de datastreams, la aplicación de técnicas y algoritmos de Soft Computing e Inteligencia Computacional (en particular Aprendizaje por Refuerzo) y, derivado de la necesidad de bajos tiempos de respuesta, el empleo de Computación de Alto Desempeño.
Tratamiento innovador de semillas de tomate y pimiento a través de agua ‘activada’ con descargas no-térmicas para el mejoramiento de la germinación y desarrollo de las plantas
Authors: Ferreyra Matías G. , Prevosto Leandro , Balestrasse Karina
Published: October 2022

La aplicación de plasmas en la agricultura (a través del uso de descargas no–térmicas) constituye un campo de aplicación emergente y en rápido crecimiento. En los últimos años, la aplicación de agua activada con plasma brindó resultados prometedores en lo referente a incremento del porcentaje de germinación, descontaminación de semillas y alimentos y estimulación de la velocidad de crecimiento de las plantas. En este trabajo se muestran resultados fisicoquímicos de agua activada por plasma, con vistas a su utilización como fertilizante y como desinfectante de cultivos. En particular, se empleó una descarga no-térmica tipo glow a presión atmosférica con cátodo de agua. El volumen de agua tratado fue de 1 litro, mientras que el tiempo máximo de exposición al plasma alcanzó 1 h. En particular, se reportan valores de pH, conductividad eléctrica, y concentraciones en fase acuosa de NO3¯, NO2¯ y H2O2.
Perancangan Komik Strip Instagram Small Thing Tentang Pemahaman Kebajikan dalam Kehidupan Sehari hari untuk Remaja usia 13 18 Tahun
Authors: Tjandra Christine Nathania , Sukmaraga Ayyub Anshari , Nirwana Aditya
Published: October 2022

Perancangan komik strip “Small Thing” Tentang Pemahaman Kebajikan dalam Kehidupan Sehari-hari untuk Remaja usia 13-18 Tahun. Christine Nathania Tjandra. 331810002@student.machung.ac.id. Teknologi yang membuat kehidupan semakin mudah. Salah satu generasi yang cepat menerima perkembangan adalah anak remaja. Perancangan komik strip “Small Thing” memperkenalkan sebuah cerita yang menyisipkan nilai kebajikan  menyajikan genre yang menggambarkan kehidupan sehari-hari. Hasil dari perancangan ini ialah illustrasi digital berupa komik dengan 20 judul dengan 8 panel dalam tiap judulnya. Selain komik, perancangan ini juga menghasilkan beberapa media pendukung seperti totebag, notebook, smartphone case, mug, dan keychain.

 

Kata kunci: teknologi, remaja, komik strip, Small Thing, instagram
SI/IT STRATEGIC PLANNING USING WARD AND PEPPARD METHODS (CASE STUDY: PT. XY)
Authors: Wijanarko Rediva Kezia
Published: October 2022

The role of information systems in the company is an important part to assist in business processes. However, there are still obstacles in the company's business processes that are not appropriate with the vision and mission as well as the goals of the company. So, good and appropriate IS/IT strategic planning is needed to be able to help companies compete. The purpose of this research is to analyze the strategic planning of the business information system of PT. XY so that it is expected to solve the problem. This study uses a qualitative method conducted by conducting interviews with one of the employees and literature studies which are then analyzed using the Ward and Peppard method which includes Value Chain Activity analysis, Five Competitive Forces analysis, SWOT analysis, Application Portfolio using McFarlan Strategic Grid and proposal analysis information systems. The final result of this research is a portfolio of information system applications such as a Website-based Inventory Management System. In addition, there is an implementation plan for the proposed information system which is expected to help business processes become more efficient and effective
EVALUATING USER ENGAGEMENT AND READING BEHAVIOR ASPECTS OF WEB VISITORS BY ANALYZING INDICATORS ON GOOGLE ANALYTICS DATA
Authors: Ramadhani Shumaya Resty
Published: October 2022

Nowadays, web-based technology is used as a source of information and marketing, one of which is educational institutions. This development unintentionally changes people's reading patterns, from paper to online media. However, user engagement and reading behavior on a web-based system is often overlooked while developing the plan. Understanding these two pillars can help the improvement process become more effective. Politeknik Caltex Riau has an official website that provides information about campus life and an introduction to study programs for prospective students. The information provided is quite complete and precise, yet there are many repeated questions. One example is the web visitors who are interested and asks about the registration steps, but the info is clearly on the website. Therefore, it is necessary to evaluate the understanding of the demographics, engagement, behavior, and events by implementing Google Analytics on the website. From the results, it is known that the visitors are on target. The majority of readers are high schoolers who are actively looking for university information. Many of them use smartphones to surf the website, though it is recognized that most readers do not read the content thoroughly. It can be seen from the total scroll event, which is only high at the beginning and keep decreasing while scrolling down the page. But the bounce and sessions number ​​keep rising. This phenomenon shows that the reader's engagement with the content is shallow, and reading comprehension is vague. In addition, there is also an indication of the effect of smaller screen size with the web design model as one of the reasons for the high jump rate. Thus, further studies can focus on deepening and evaluating web design and evaluating more indicators provided on Google Analytics.
ALTHAEA OFFICINALIS L. BİTKİSİNİN ANTİGENOTOKSİK AKTİVİTESİNİN DROSOPHILA MELANOGASTER’DE ARAŞTIRILMASI
Authors: KILIÇ KARABULUT Aygül
Published: October 2022

Bu çalışmada, tıbbi öneme sahip bir bitki olan ve pek çok hastalığın tedavisinde yaygın olarak kullanılan Althaea officinalis L. bitkisinin antigenotoksik etkisi çalışıldı. Bu amaçla somatik mutasyon ve rekombinasyonu ölçen ve in vivo bir test olan Drosophila kanat benek testi (SMART) kullanıldı. Mitomisin C (MMC) mutajenine karşı A. officinalis bitkisinin antigenotoksik etkisi araştırıldı. Çalışmalar sonrasında, A. officinalis bitkisinin kurutulmuş herbasının 5 mg, 15 mg ve 45 mg’lık dozlarda MMC’nin oluşturduğu DNA hasarını baskılayabileceği saptandı. 5mg, 15mg ve 45mg’lık doz uygulanması sonucunda, MMC ile indüklenen toplam benek sayılarının sırasıyla %3.66, %1.83 ve %2.03 oranında inhibe edildiği saptanmıştır. Elde edilen verilere göre A. officinalis bitkisinin birtakım antigenotoksik faktörler içerdiği düşünüldü.
Growing Synthetic Puffed Rice Bales: Urban Rewilding with Edible Plant-Based Architectural Modules
Authors: Joachim Mitchell
Published: October 2022

Edible biotech altered compact plant-based rice units suitable to rewild urban environments with voxel-driven building components in facades, atriums, balconies, rooftops, public spaces and more.
Effect of The Number of Array Elements from Printed Yagi Antenna Against Power Acquisition Efficiency for Implementation RF Harvesting Energy on Frequency 2.4 GHz
Authors: Darmono Hendro , Irawan Dwiky Fany , Hariyadi Aad
Published: October 2022

Most low-power electronics, such as remote sensors and embedded devices, are powered by batteries. Replacement is expensive when there are hundreds of sensors in remote locations. RF Energy Harvesting can be used to provide an alternative energy source for these types of embedded devices. This study is to analyze the effect of the number of elements of the yagi print antenna array on the efficiency of receiving power at a frequency of 2.4 GHz. The making of this harvesting energy system is aimed at making the energy around us maximally utilized and used as alternative energy by the community. The highest output voltage of the rectifier antenna at a distance of 10 cm from the access point is 216 mV for a single element yagi print antenna, 96 mV for a 2 element yagi print antenna, and 168 mV for a 4 element yagi print antenna. with no load, the number of array elements affects the output voltage of the rectifier in addition to the number of stage voltage multipliers.
COVID-19 Disease Diagnosis Expert System with Certainty Factor Method using iOS-Based App
Authors: Suprayitno Supriatna Dwi Atmaja , Zakaria M. Nanak , Yulianto Ahmad Wilda
Published: October 2022

The drop in COVID-19 patients in Indonesia from January to February 2022 made many companies prepare policies to no longer enforce work from home. At the office, we can interact and meet other people directly and it is possible to be exposed to Covid-19 that could potentially become a new wave of COVID-19. This effect poses a serious risk to all people who come into contact with COVID-19-infected individuals or are close to them. The major course of action that may be performed when someone has COVID-19 is self-isolation and tracking anyone who is around or has a health condition associated to COVID-19. We require an iOS-based COVID-19 diagnosis expert system application to track the health status of everyone around us because we are unable to know the health status of everyone. The application uses artificial intelligence technology in the form of an expert system to check health conditions. The expert system replaces the role of the expert with the certainty factor method. This app should be used every time before entering a potentially crowded place to clarify tracking by using maps feature. In addition to COVID-19, this expert system can also diagnose diseases that have the same symptoms as Typhoid Fever and Pneumonia. The results of the expert system are in the form of diagnosing the user's health condition based on the symptoms given with a confidence level of up to 0.9999952130944 or 99.99952130944% for COVID-19, 0.9676 or 96.76% for Typhoid Fever, and 97% for Pneumonia.
Energy Efficiency Use of Amount of Light in a Room Based on Number of People Using IoT and Image Processing
Authors: Virnandani Latansyah Maulana , Imammuddin Azam Muzakhim , Junus Mochammad
Published: October 2022

A room with too humid conditions can cause mold and bacteria to multiply quickly. The humidity level of the room can be influenced by several factors such as the temperature level and the intensity of light entering the room. Even so, the use of lighting as a sterilizer is currently still lacking in reducing the level of humidity in the room. For this reason, it is necessary to develop technology in the form of a control system for the use of led and ultraviolet lamps in the study room by utilizing the IoT system, so that it can turn on the lights and utilize electrical energy. In this study, the Internet of Things system was applied as a control for Web cameras, Gyml 8511, DHT11, and BH1750 sensors. Data from the sensor will be sent from Arduino uno to a local server, namely raspberry pi 4 using NRF24L01. The communication system between nodes is designed with a mesh topology that can determine the fastest route in the process of sending information. The result of this research is monitoring on the web display that displays the condition of the class and the condition of the lights. From the experimental results, it is found that the mesh communication system can work well.
New algorithms of phenotyping for seven genetic-physiological systems which maximising yield of future varieties
Authors: Novohatin Vladimir , Vorob'ev Vladimir , Dragavcev Viktor
Published: October 2022

Improvement of hereditary drought resistance in crops is recently being among the main objectives for food security of humanity because of global warming and the growing costs for bakery and forage grain. Analysis of complex properties of drought resistance in cereal (phenotyping) shows the limitation of a canonical genocentric approach and the approaches based on molecular genetics to solve the problem of significant hereditary improvement of drought resistance. The priority epigenetic approach that we propose is based on the Theory of eco-genetic organization of quantitative traits (TEGOQT). In TEGOQT seven genetic-physiological systems (GPS) involved in harvest increasing, but not particular traits of product ivity, are to be operated with. These GPS are attractions; micro-distribution of attractive plastics substances between grains and chaff in ear; adaptability to drought, cold, frost, heat, salt, etc; horizontal immunity; ''payment'' by dry biomass for a limiting factor of soil nutrition — N, P, K, etc.; tolerance to plant density in phytocenosis; hereditary variability in duration of the phases of ontogenesis. In this paper we discuss drought adaptability as a part of GPS complex. It is shown that phenotyping evaluation is necessary to analize drought tolerance, the complex property to which no less than 22 components characters contribute.
Effect of nitrogen fertilizer Life Force Humic N on the yield and quality of the green mass of corn in the conditions of the Republic of Belarus
Authors: Zhuk Ekaterina
Published: October 2022

Corn plays a leading role in providing the livestock industry with green and juicy feeds. To increase the yield and quality of green mass, the use of nitrogen fertilizers is of great importance [1]. In a field experiment on sod-podzolic soils in the conditions of the Minsk region, on the basis of LLC "Gastellovskoye" of the Minsk district, the influence of nitrogen fertilizer Life Force Humic N on the yield and quality of the green mass of the Dolphin corn hybrid was studied. Water-soluble nitrogen fertilizer Life Force Humic N on corn crops was used in phases: 4–6 leaves, sweeping of the panicle and the beginning of flowering of the crop. The content of the main elements of nutrition (nitrogen, phosphorus, potassium) in the green mass of corn under the influence of the fertilizer Life Force Humic N varied within the error of the experiment and at the level with the use of control. No significant changes in the protein content depending on the use of equivalent doses of mineral nitrogen (control) and Life Force Humic N fertilizer have been established. The maximum protein content (5.6–5.7%) was noted both in the variant with the use of top dressing with standard nitrogen fertilizer and with the Life Force Humic N. fertilizer. When cultivating corn for green mass, the use of three-fold non-root treatment of crops with liquid water-soluble nitrogen fertilizer Life Force Humic N increased the yield of the green mass of the crop by 31 c / ha. When cultivating corn for green mass, the use of non-root treatments with Life Force Humic N fertilizer at a dose of 1 l/ ha is recommended.
Intensification of forage production by means of the combined crops in Tajikistan
Authors: Boboev Abdumusobir , Partoev Kurbonali
Published: October 2022

Further intensification of the fodder production industry is closely related to the rational use of land, irrigated water, labor resources and new approaches to increase the yield of fodder per unit area. One of the ways to effectively use resources such as land, irrigation water, as well as mineral fertilizers and labor resources can be considered to be an increase in the area under joint crops of several types of agricultural plants. To improve the efficiency of agricultural production, especially in fodder production and the rational use of irrigated lands, irrigation water, mineral fertilizers and labor resources, we have developed new innovative methods for introducing in production methods of combined sowing of several fodder crops in the same field. As such crops, we used such plants as Jerusalem artichoke, corn, sorghum and sunflower. Combined sowing of Jerusalem artichoke with other forage crops contributes to an increase in the total mass of dry matter per hectare by 29–41%. Important factors contributing to an increase in the yield of green mass with combined crops are: plant density, an increase in aboveground mass due to the re-growth of Jerusalem artichoke and sorghum stems by the end of the growing season (by the end of November). The best option in the experiment was the combined sowing of four fodder crops: Jerusalem artichoke + sorghum + sunflower + corn. In this version of the experiment, compared with the control version, the yield of green mass was higher by 172.7%; total biomass — by 53.2%; profitability — by 23%. Due to the increase in yield, the profitability of combined forage crops is 8–23% higher compared to the control option — pure Jerusalem artichoke sowing.
Nutritional value and chemical composition of feed harvested in the Vologda region
Authors: Gusarov Igor'
Published: October 2022

The data on feed quality and their actual nutritional value in the conditions of the North of the European part of Russia are presented. The averaged data on the nutritional value and chemical composition of feed received for analysis from agricultural enterprises of the Vologda oblast are presented. There is a tendency to decrease certain indicators characterizing the nutritional value of feed, such as crude protein, crude fat, crude fiber, as well as the content of chemical elements calcium and phosphorus. The data on the actual nutritional value and chemical composition of feed that have developed in the Vologda Oblast indicate the need to improve the regional feed production system that meets the requirements of standardized feeding of highly productive dairy cows.
Features of obtaining environmentally friendly livestock products in the conditions of the mountainous zone of the RSO–Alania
Authors: Ugorec Valentina , Guluyeva Lyudmila
Published: October 2022

The authors present the natural resource potential of mountain lands and present the main results of work to increase the productivity of degraded pastures using biological, natural and economic resources. On their basis, specialized grasslands for farm animals have been formed. The experiments were carried out on two groups of animals. It was found that the experimental group of animals used the nutrients of the grass of the biologized pasture better, which had a positive effect on scar digestion and had a beneficial effect on their meat productivity, resulting in a profit of 9.86% more than the analogues of the control group.
Comparative productivity of legumes in single species and mixed sowings on soddy-podzolic soils of the central Non-Black earth region
Authors: Voronov Sergey , Kononchuk Vadim , Timoshenko Sergey , Shtyrhunov Viktor , Nazarova Tamara
Published: October 2022

In a series of short-term field experiments (2016–2021) on medium loamy soddy-podzolic soil with a high supply of the arable layer with mobile phosphorus and potassium, the conditions for the formation of high productivity of new generation leguminous crop varieties in pure and mixed crops for grain and haylage were revealed. To increase the productivity and sustainability of fodder production in the changing climate of the Central Non-Chernozem Region, it is proposed to expand the species diversity of field agrophytocenoses by cultivating grain fodder crop rotations in fallow links, along with traditional peas, pelushka and spring vetch, also early ripe lupine varieties of narrow-leaved determinant type. This will not only reduce the cost of production of concentrated and bulky feeds, improve their quality characteristics, but also reduce dependence on imports of soybeans and products of its processing.
Transcriptome and DNA methylome analysis of peripheral blood samples reveals incomplete restoration and transposable element activation after 3-months recovery of COVID-19
Authors: Yin Ying , Liu Xiao-zhao , Tian Qing , Fan Yi-xian , Ye Zhen , Meng Tian-qing , Wei Gong-hong , Xiong Cheng-liang , Li Hong-gang , He Ximiao , Zhou Li-quan
Published: October 2022

Comprehensive analyses showed that SARS-CoV-2 infection caused COVID-19 and induced strong immune responses and sometimes severe illnesses. However, cellular features of recovered patients and long-term health consequences remain largely unexplored. In this study, we collected peripheral blood samples from nine recovered COVID-19 patients (median age of 36 years old) from Hubei province, China, 3 months after discharge as well as 5 age- and gender-matched healthy controls; and carried out RNA-seq and whole-genome bisulfite sequencing to identify hallmarks of recovered COVID-19 patients. Our analyses showed significant changes both in transcript abundance and DNA methylation of genes and transposable elements (TEs) in recovered COVID-19 patients. We identified 425 upregulated genes, 214 downregulated genes, and 18,516 differentially methylated regions (DMRs) in total. Aberrantly expressed genes and DMRs were found to be associated with immune responses and other related biological processes, implicating prolonged overreaction of the immune system in response to SARS-CoV-2 infection. Notably, a significant amount of TEs was aberrantly activated and their activation was positively correlated with COVID-19 severity. Moreover, differentially methylated TEs may regulate adjacent gene expression as regulatory elements. Those identified transcriptomic and epigenomic signatures define and drive the features of recovered COVID-19 patients, helping determine the risks of long COVID-19, and guiding clinical intervention.
Deeper insights into transcriptional features of cancer-associated fibroblasts: An integrated meta-analysis of single-cell and bulk RNA-sequencing data
Authors: Kazakova Anastasia N. , Anufrieva Ksenia S. , Ivanova Olga M. , Shnaider Polina V. , Malyants Irina K. , Aleshikova Olga I. , Slonov Andrey V. , Ashrafyan Lev A. , Babaeva Nataliya A. , Eremeev Artem V. , Boichenko Veronika S. , Lukina Maria M. , Lagarkova Maria A. , Govorun Vadim M. , Shender Victoria O. , Arapidi Georgij P.
Published: October 2022

Cancer-associated fibroblasts (CAFs) have long been known as one of the most important players in tumor initiation and progression. Even so, there is an incomplete understanding of the identification of CAFs among tumor microenvironment cells as the list of CAF marker genes varies greatly in the literature, therefore it is imperative to find a better way to identify reliable markers of CAFs. To this end, we summarized a large number of single-cell RNA-sequencing data of multiple tumor types and corresponding normal tissues. As a result, for 9 different types of cancer, we identified CAF-specific gene expression signatures and found 10 protein markers that showed strongly positive staining of tumor stroma according to the analysis of IHC images from the Human Protein Atlas database. Our results give an insight into selecting the most appropriate combination of cancer-associated fibroblast markers. Furthermore, comparison of different approaches for studying differences between cancer-associated and normal fibroblasts (NFs) illustrates the superiority of transcriptome analysis of fibroblasts obtained from fresh tissue samples. Using single-cell RNA sequencing data, we identified common differences in gene expression patterns between normal and cancer-associated fibroblasts, which do not depend on the type of tumor.
Metal-organic framework (MOF)-incorporated polymeric electrolyte realizing fast lithium-ion transportation with high Li+ transference number for solid-state batteries
Authors: Xu Yifan , Zhao Ruo , Fang Jianjun , Liang Zibin , Gao Lei , Bian Juncao , Zhu Jinlong , Zhao Yusheng
Published: October 2022

Composite polymer electrolytes (CPEs) show significant advantages in developing solid-state batteries due to their high flexibility and easy processability. In CPEs, solid fillers play a considerable effect on electrochemical performances. Recently, metal-organic frameworks (MOFs) are emerging as new solid fillers and show great promise to regulate ion migration. Herein, by using a Co-based MOF, a high-performance CPE is initially prepared and studied. Benefiting from the sufficient interactions and pore confinement from MOF, the obtained CPE shows both high ionic conductivity and a high Li+ transference number (0.41). The MOF-incorporated CPE then enables a uniform Li deposition and stable interfacial condition. Accordingly, the as-assembled solid batteries demonstrate a high reversible capacity and good cycling performance. This work verifies the practicability of MOFs as solid fillers to produce advanced CPEs, presenting their promising prospect for practical application.
Bimetallic Cu-Bi catalysts for efficient electroreduction of CO2 to formate
Authors: Li Le , Jin Xuan , Yu Xiaohan , Zhong Miao
Published: October 2022

Electrochemical CO2 reduction offers an effective means to store renewable electricity in value-added chemical feedstocks. Much effort has been made to develop catalysts that achieve high Faradaic efficiency toward Formate production, but the catalysts still need high operating potentials to drive the CO2–to–formate reduction. Here we report physical vapor deposition to fabricate homogeneously alloyed, compositionally controlled Cu1-xBix bimetallic catalysts over a large area with excellent electrical conductivity. Operating electrochemical studies in Ar-saturated and CO2-saturated electrolytes identified that Cu–Bi catalysts notably suppress the competing H2 evolution reaction and enhance CO2–to–formate selectivity. We reported a formate Faradaic efficiency of >95% at an improved cathodic potential of ∼−0.72 V vs. RHE and a high formate cathodic energy efficiency of ∼70%. The electrochemical reaction is stable over 24 h at a current density of 200 mA cm−2. The work shows the advantages of bimetallic catalysts over single metal catalysts for increased reaction activity and selectivity.
Interaction of Talaromyces marneffei with free living soil amoeba as a model of fungal pathogenesis
Authors: Pruksaphon Kritsada , Nosanchuk Joshua D. , Thammasit Patcharin , Pongpom Monsicha , Youngchim Sirida
Published: October 2022

Talaromyces (Penicillium) marneffei is an important dimorphic mycosis endemic in Southeast Asia and Southern China, but the origin and maintenance of virulence traits in this organism remains obscure. Several pathogenic fungi, including Cryptococcus neoformans, Aspergillus fumigatus, Blastomyces dermatitidis, Sporothrix schenckii, Histoplasma capsulatum and Paracoccidioides spp. interact with free living soil amoebae and data suggests that fungal pathogenic strategies may emerge from environmental interactions of these fungi with ubiquitous phagocytic microorganisms. In this study, we examined the interactions of T. marneffei with the soil amoeba Acanthamoeba castellanii. T. marneffei was rapidly ingested by A. castellanii and phagocytosis of fungal cells resulted in amoeba death after 24 h of contact. Co-culture also resulted in a rapid transition for conidia to the fission-yeast form. In addition, well-established virulence factors such as melanin and a yeast specific mannoprotein of T. marneffei were expressed during interaction with A. castellanii at 37°C. Our findings support the assumption that soil amoebae environmental predators play a role in the selection and maintenance of particular features in T. marneffei that impart virulence to this clinically important dimorphic fungus in mammalian hosts.
Outcomes and mechanical complications of acute myocardial infarction during the second wave pandemic in a Milan HUB center for cardiac emergencies
Authors: Penso Marco , Frappampina Antonio , Cosentino Nicola , Tamborini Gloria , Celeste Fabrizio , Ianniruberto Monica , Ravagnani Paolo , Troiano Sarah , Marenzi Giancarlo , Pepi Mauro
Published: October 2022

Aims

COVID-19 has dramatically impacted the healthcare system. Evidence from previous studies suggests a decline in in-hospital admissions for acute myocardial infarction (AMI) during the pandemic. However, the effect of the pandemic on mechanical complications (MC) in acute ST-segment elevation myocardial infarction (STEMI) has not been comprehensively investigated. Therefore, we evaluated the impact of the pandemic on MC and in-hospital outcomes in STEMI during the second wave, in which there was a huge SARS-CoV-2 diffusion in Italy.

Methods and results

Based on a single center cohort of AMI patients admitted with STEMI between February 1, 2019, and February 28, 2021, we compared the characteristics and outcomes of STEMI patients treated during the pandemic vs. those treated before the pandemic. In total, 479 STEMI patients were included, of which 64.5% were during the pandemic. Relative to before the pandemic, primary percutaneous coronary intervention (PCI) declined (87.7 vs. 94.7%, p = 0.014) during the pandemic. Compared to those admitted before the pandemic (10/2019 to 2/2020), STEMI patients admitted during the second wave (10/2020 to 2/2021) presented with a symptom onset-to-door time greater than 24 h (26.1 vs. 10.3%, p = 0.009) and a reduction of primary PCI (85.2 vs. 97.1%, p = 0.009). MC occurred more often in patients admitted during the second wave of the pandemic than in those admitted before the pandemic (7.0 vs. 0.0%, p = 0.032). In-hospital mortality increased during the second wave (10.6 vs. 2.9%, p = 0.058).

Conclusion

Although the experience gained during the first wave and a more advanced hub-and-spoke system for cardiovascular emergencies persists, late hospitalizations and a high incidence of mechanical complications in STEMI were observed even in the second wave.