bluuebunny/crossref_metadata_2025 huggingface dataset:
Identification of Phytoplankton at Ephemeral Pond with Acidic pH in Bangka Regency
Authors: Kurniawan Andri , Kurniawan Ardiansyah , Robin Robin
Published: January 2024

AbstractEphemeral waters, the temporary aquatic environment become an interesting habitat to explore extremophile organism, include phytoplankton. Furthermore, the waters have an acidic condition or low pH that impact to metabolisms, community structure, and diversity of phytoplankton. This study was conducted on June until August 2022 in Bangka Regency, Bangka Belitung Archipelago Province, Indonesia. We analyzed the phytoplankton presence at acidic ephemeral waters to indicated their potential as primary producer in food web, bioindicator, and ecological succession agent. This study was conducted by exploration method of phytoplankton diversity. The research observed and found five class and twelve genera that consist of class Chlorophyceae (genera Enteromorpha, Ankistrodesmus, Prasiola, Pleurococcus, and Coleochaete), class Rhodophyceae (genera Lemanea), class Diatoms (genera Diatoma, Synedra, and Navicula), class Xanthophyceae (genera Ophiocytium), and class Cyanobacteria (genera Oscillatoria and Anabaena). The class Chlorophyceae, genera Enteromorpha were the highest community at the both of acidic waters and they could survive at pH 3.52 + 0.5 to 3.71 + 0.8.AbstrakPerairan ephemeral, lingkungan perairan musiman menjadi suatu habitat yang menarik untuk mengeksplorasi organisme ekstremofil, termasuk fitoplankton. Lebih jauh lagi, perairan tersebut memiliki kondisi asam atau pH rendah yang berdampak pada metabolisme, struktur komunitas, dan diversitas fitoplankton. Penelitian ini dilaksanakan pada Juni hingga Agustus 2022 di Kabupaten Bangka, Provinsi Kepulauan Bangka Belitung, Indonesia. Kami menganalisis keberadaan fitoplankton di perairan ephemeral asam untuk mengindikasikan potensi fitoplankton sebagai produsen utama, bioindikator dan agen suksesi lingkungan. Penelitian ini dilaksanakan dengan metode eksplorasi diversitas fitoplankton. Penelitian ini mengobservasi dan menemukan lima kelas dan dua belas genus yang terdiri atas kelas Chlorophyceae (genus Enteromorpha, Ankistrodesmus, Prasiola, Pleurococcus, dan Coleochaete), kelas Rhodophyceae (genus Lemanea), kelas Diatoms (genus Diatoma, Synedra, dan Navicula), kelas Xanthophyceae (genus Ophiocytium), dan kelas Cyanobacteria (genus Oscillatoria dan Anabaena). Kelas Chlorophyceae, genus Enteromorpha adalah komunitas tertinggi pada kedua perairan asam dan mampu bertahan pada pH 3.52 + 0.5 to 3.71 + 0.8.
Fish Community Structure The Dry Season in The Cipeles River, Sumedang Regency, West Java Province, Indonesia
Authors: Yustiati Ayi , Rostika Rostika , Suryadi Ibnu Bangkit Bioshina , Herawati Titin
Published: January 2024

AbstractCipeles River is a sub-watershed of the Cimanuk River that flows in Sumedang Regency, Indonesia. The upstream is located in Sukasari District and flows into Tomo District. This study aimed to determine the fish community structure in the Cipeles River during the dry season. This research was conducted from September to December 2020 using field observation methods and purposive sampling techniques at three stations (Station 1 at 6°48′59.5″S and 108°01′22.5″E; Station 2 at 6°48′56.2″S and 108°01′32.3″E; and Station 3 at 6°47′3.7″S and 108°05′44″E) data analysis employed descriptive-comparative. Parameters observed are abundance, diversity, dominance, uniformity, community structure, and water quality. The results showed that from 566 caught fish the diversity index is low with a value of 0.86–0.89, a moderate dominance index with a value of 0.55–0.62, and a low uniformity index of 0.16–0.17. Based on the three index values, it can be concluded that the fish community structure the dry season in the Cipeles River is categorized as depressed, caused by the high influence of total suspended solids that have exceeded the water quality threshold value for fisheries (according to regulation of the Government of the Republic of Indonesia Number 22 of 2021 on Spatial Management) with concentrations ranging from 67 mgL-1 to 74 mgL-1.AbstrakSungai Cipeles merupakan sub DAS dari Sungai Cimanuk yang mengalir di Kabupaten Sumedang, Indonesia. Hulunya terletak di Kecamatan Sukasari dan mengalir ke Kecamatan Tomo, Kabupaten Sumedang. Penelitian ini bertujuan untuk mengetahui struktur komunitas ikan di Sungai Cipeles pada musim kemarau. Penelitian dilakukan pada bulan September hingga Desember 2020 dengan menggunakan metode pengamatan lapangan dan teknik purposive sampling pada tiga stasiun (Stasiun 1 di 6°48′59.5″LS dan 108°01′22.5″BT, Stasiun 2 di 6°48′56.2″ S dan 108°01′32.3″BT, dan Stasiun 3 di 6°47′3.7″LS dan 108°05′44″E). Analisis data menggunakan deskriptif-komparatif. Parameter yang diamati adalah kelimpahan, keragaman, dominasi, keseragaman, struktur komunitas, dan kualitas air. Hasil penelitian menunjukkan bahwa dari 566 ikan yang ditangkap indeks keragamannya rendah dengan nilai 0,86–0,89, indeks dominansi sedang dengan nilai 0,55–0,62, dan indeks keseragaman rendah 0,16–0,17. Berdasarkan ketiga nilai indeks tersebut dapat disimpulkan bahwa struktur komunitas ikan pada musim kemarau di Sungai Cipeles dikategorikan tertekan, disebabkan oleh tingginya pengaruh total padatan tersuspensi yang telah melebihi nilai ambang batas kualitas air untuk perikanan (menurut Peraturan Pemerintah Republik Indonesia Nomor 22 Tahun 2021 tentang Penataan Ruang) dengan konsentrasi berkisar antara 67 mgL-1 sampai dengan 74 mgL-1.
Feed Management and Nutritional Status of Gibbons (Symphalangus Syndactylus Raffles, 1821) at Tegal Alur Animal Rescue Center, Jakarta
Authors: Wijayanti Fahma , Al katiri Abdul Bagas , Handayani Nurul , Fitriana Narti
Published: January 2024

AbstractGibbon (Symphalangus syndactylus Raffles, 1821) is an endangered species of black long-armed ape that is protected by national and international regulations. This study aims to analyze feeding behavior, feed management and nutritional status of gibbons in Tegal Alur Animal Rescue Center. The study was conducted in March-July 2020, using focal animal sampling and ad libitum sampling methods to 6 individual gibbons. Food management data collection includes information on feeding and the amount of feed, while nutritional status includes physical characteristics of the body, anthropometry, and analysis of feed composition. The results showed that the feeding schedule for gibbons was in accordance with the feeding times of gibbons in nature. Tegal Alur PPS provides food in the form of nine types of fruit, two types of vegetables and one type of leaves. Gibbons at Tegal Alur PPS Alur Animal Rescue Center has met the amount of feed consumption according to body weight. The nutritional status based on anthropometry shows that the body weight of the gibbon is not in accordance with its natural habitat. Morphological observations showed that the gibbon’s teeth and eyes were healthy, while some gibbons had hair loss and depigmentation.AbstrakOwa (Symphalangus syndactylus Raffles, 1821) merupakan spesies kera hitam lengan panjang yang terancam punah dan dilindungi oleh peraturan nasional dan internasional. Penelitian bertujuan untuk menganalisis perilaku makan, pengelolaan pakan, dan status gizi owa di Pusat Penyelamatan Satwa (PPS) Tegal Alur. Penelitian dilakukan pada bulan Maret-Juli 2020, dengan metode focal animal sampling dan ad libitum sampling pada 6 individu owa. Pendataan pengelolaan pakan meliputi informasi pakan dan jumlah pakan, sedangkan status gizi meliputi ciri fisik tubuh, antropometri, dan analisis komposisi pakan. Hasil penelitian menunjukkan bahwa jadwal pemberian pakan owa sesuai dengan waktu pemberian pakan owa di alam. PPS Tegal Alur menyediakan makanan berupa sembilan jenis buah, dua jenis sayuran dan satu jenis daun-daunan. Owa di Pusat Penyelamatan Satwa Tegal Alur telah memenuhi jumlah konsumsi pakan sesuai dengan berat badan. Status gizi berdasarkan antropometri menunjukkan bahwa berat badan owa lebih rendah dengan berat badan Owa di habitat aslinya. Pengamatan morfologi menunjukkan bahwa gigi dan mata owa dalam keadaan sehat, sementara beberapa owa mengalami kerontokan rambut dan depigmentasi.
Akumulasi Logam Timbal (Pb) Pada Tanaman Bayam (Amaranthus tricolor L.) Dengan Aplikasi Pupuk Mikoriza
Authors: Yunita Etyn , Dasumiati Dasumiati , Widyastuti Azizah Mei , Irda Irzal
Published: January 2024

AbstrakPencemaran tanah oleh logam timbal (Pb) merupakan salah satu bentuk pencemaran yang sangat berbahaya bagi mahluk hidup. Salah satu tanaman bioakumulator penyerap logam berat di lingkungan adalah tanaman bayam (Amaranthus tricolor L.). Tujuan dari penelitian ini adalah untuk menganalisis pengaruh aplikasi pupuk mikoriza terhadap akumulasi Pb pada akar, batang, dan daun serta pertumbuhan tanaman bayam. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan perlakuan dosis pupuk mikoriza, yaitu 0 g, 5 g, 10 g, dan 15 g per polybag. Jumlah Pb yang diaplikasikan ke media tanam adalah 5 ppm per polybag. Akumulasi Pb tertinggi terdapat pada tanaman bayam dengan perlakuan 5 g pupuk mikoriza. Rata-rata akumulasi Pb di akar, batang, dan daun pada perlakuan ini berturut-turut adalah 103,57 ppm; 36,67 ppm; dan 8,60 ppm. Pertumbuhan tanaman bayam pada perlakuan 5 g pupuk mikoriza lebih baik dari perlakuan lainnya, yaitu memiliki rata-rata tinggi tanaman dan jumlah daun tertinggi pada minggu ke-4 (9,7–12,5 cm dan 6,9–8,6 helai). Aplikasi pupuk mikoriza dapat meningkatkan akumulasi Pb pada akar, batang, dan daun serta meningkatkan pertumbuhan tanaman bayam pada dosis 5 g per polybag.AbstractSoil pollution by lead (Pb) is a form of pollution that is very dangerous for living creatures. One of the bioaccumulator plants that absorb heavy metals in the environment is spinach (Amaranthus tricolor L.). The aim of this research was to analyze the effect of mycorrhizal fertilizer application on Pb accumulation in roots, stems and leaves as well as spinach plant growth. This research used a completely randomized design (CRD) with treatment doses of mycorrhizal fertilizer, namely 0 g, 5 g, 10 g, and 15 g per polybag. The amount of Pb applied to the planting media is 5 ppm per polybag. The highest Pb accumulation was found in spinach plants treated with 5 g of mycorrhizal fertilizer. The average accumulation of Pb in roots, stems and leaves in this treatment was 103.57 ppm; 36.67 ppm; and 8.60 ppm. The growth of spinach plants in the 5 g mycorrhizal fertilizer treatment was better than the other treatments, namely having the highest average plant height and number of leaves in the 4th week (9.7-12.5 cm and 6.9-8.6 pieces). Application of mycorrhizal fertilizer can increase Pb accumulation in roots, stems and leaves and increase the growth of spinach plants at a dose of 5 g per polybag.
¿Es posible una normatividad autorreflexiva? Reflexiones acerca de la estética moderna
Authors: Galfione Verónica
Published: January 2024

Este artículo se propone indagar hasta qué punto la definición de la negatividad en términos de fuerza, que propone Christoph Menke en el marco de sus reflexiones estéticas, logra superar las coordenadas a partir de las cuales este concepto había sido pensado por la tradición. Mi hipótesis es que Menke se aleja de la inclinación metafísica a identificar la negatividad con el espíritu, pero tiende a reproducir el mismo esquema dualista por medio del cual la interpretación tradicional había establecido la exterioridad de la negatividad. En tal sentido, el modo de proceder de Menke resulta paradójico, porque busca aprehender una negatividad fundamental, pero se sirve para ello de conceptos que ya son un intento de neutralizar el hiato inherente a la normatividad.
Agencias no humanas en el arte. Caminos cruzados de la estética y la antropología
Authors: Carmona Hurtado Jordi
Published: January 2024

En el presente artículo planteamos una lectura cruzada de diferentes aspectos de la antropología (Claude Lévi-Strauss, Alfred Gell y Viveiros de Castro) y del discurso estético (Friedrich Schiller y Deleuze/Guattari). La antropología se ha constituido como un nuevo saber que implica cierta ética de descolonización del pensamiento. Esta descolonización supone una puesta en cuestión de los binarismos más arraigados en la filosofía occidental, entre ellos el que solo cabe atribuir agencia a los seres humanos. Nuestro propósito es mostrar que el pensamiento estético ha operado un cuestionamiento semejante, abriendo el camino a pensar agencias no humanas en el arte.
El trauma o en busca de la agencia perdida
Authors: Martínez Ruiz Rosaura
Published: January 2024

El propósito de este artículo es explorar el poder curativo que tienen el relato y la escucha psicoanalítica del trauma para recuperar la agencia que la violencia ha arrebatado. Desde la teoría freudiana del trauma, la de la sujeción de Judith Butler y la de la acción de Hannah Arendt, analizaré cómo la agencia no es un a priori pleno, sino una construcción a posteriori que se logra, retardadamente, en el discurso que se narra para un otro que escucha.
Ortega, filósofo de la historia: el influjo crítico de Hegel en la teoría de las creencias y las generaciones.
Authors: Marcos Alonso , Rocco Lozano Valerio
Published: January 2024

El artículo expone la propuesta de filosofía de la historia de José Ortega y Gasset. Tras mostrar su constante interés por la historia en prácticamente todos sus escritos tanto de juventud como de madurez, pasa a exponer su proyecto de historiología. Para ello, centra la atención en dos conceptos clave: la teoría de las creencias y la teoría de las generaciones. Este recorrido se lleva a cabo en paralelo a un análisis del influjo crítico de Hegel, mostrando las continuidades y rupturas entre ambos.
Maquiavelo sobre Éxodo 32: Moisés y el combate de la envidia
Authors: Tavera Villegas Hugo
Published: January 2024

En un libro reciente, Maurizio Viroli sostiene que en El Príncipe Maquiavelo delinea la imagen del fundador que la teoría política republicana necesita, la que recibe su encarnación paradigmática en Moisés y sus acciones. Aquí propongo que para una comprensión adecuada del Moisés de Maquiavelo resulta clave la interpretación que éste ofrece del incidente del becerro de oro (Discursos III, 30), al que interpreta como una revuelta contra Moisés motivada por la envidia. Este episodio, sugiero, ejemplifica las acciones necesarias para asegurar las instituciones de un estado libre recién constituido en el contexto del conflicto permanente entre grandes y pueblo.
Los monstruos kaplanianos y la lógica de los demostrativos
Authors: Barrero Guzman Tomas Andres
Published: January 2024

¿Cómo puede la lógica representar expresiones indéxicas como “yo”, “aquí” y “ahora”? ¿Cómo no debe representarlas? Examino estas dos preguntas a partir de la Lógica de los Demostrativos (LD) de Kaplan y su impopular prohibición de operadores monstruosos. A pesar de algunos defectos de formulación, sostengo que dicha prohibición está guiada por una poderosa visión de las relaciones lógicas de validez entre oraciones con indéxicos que desafía la concepción tradicional de consecuencia lógica como preservación de la verdad y resalta el papel fundamental de la información semántica en la construcción de sistemas formales concebidos como modelos de las lenguas naturales.
Sócrates y la conversión de sus interlocutores. Seguido de una crítica al optimismo de Pierre Hadot
Authors: Solano Alejandro
Published: January 2024

Una larga tradición le atribuye a Sócrates la preocupación por transformar la vida de quienes dialogan con él; atribución que se opone a la imagen, rastreable en los Diálogos de Platón, de su fracaso al momento de influir en la vida de sus interlocutores más recalcitrantes. Para disminuir esta tensión y, con ello, disolver la impresión de dicho fracaso, se examinan elementos de la representación platónica del élenchos en favor de la idea de que Sócrates no busca convertir a los demás. Al final, se añade una crítica al optimismo con que Pierre Hadot sí le adjudica la función de agente de conversión.
Caracterización geoquímica y madurez de carbones térmicos de Norte de Santander, Colombia
Authors: Rodríguez-Castellanos Billy A. , Castro-Rodríguez Adriana
Published: January 2024

Debido a la creciente preocupación mundial por los elevados índices de contaminación ambiental y por el calentamiento global producto de las actividades humanas, se han comenzado a generar restricciones para el uso de los combustibles fósiles, entre ellos el carbón. Colombia al ser un país rico en este recurso mineral necesita comenzar a evaluar su uso potencial en otros campos y conocer de manera detallada las posibles implicaciones ambientales asociadas a su composición química. Actualmente el Servicio Geológico Colombiano viene desarrollando diversos proyectos encaminados a este propósito. Este trabajo presenta la caracterización geológica, fisicoquímica y petrográfica de los carbones térmicos de Norte de Santander, haciendo énfasis en la composición de elementos de interés ambiental. Se tomaron 87 muestras de carbón de frentes de mina en los municipios de Arboledas, Salazar, San Cayetano, Sardinata, Toledo y Tibú en el departamento de Norte de Santander. Las muestras fueron preparadas y se realizaron los siguientes análisis: Humedad de equilibrio, análisis próximo, determinación de carbono hidrógeno y nitrógeno, azufre total, formas de azufre, poder calorífico, índice de hinchamiento (FSI), índice de molienda (HGI), mercurio total, composición de elementos mayores, menores y trazas y reflectancia media de la vitrinita. Los mantos de carbón teniendo en cuenta su clasificación según los valores de reflectancia media de la vitrinita corresponden a carbones de rango bajo y medio que corresponden a subbituminosos y bituminosos lo que indica que no son carbones con alta madurez térmica.
Análisis del impacto de la pequeña minería en una comunidad amazónica ecuatoriana, dentro del contexto geológico, ambiental y socioeconómico
Authors: Medina-Bueno Freddy , Simbaña-Tasiguano Marco , Aguinaga-Barragán Alba , Salgado-Revelo Andrea
Published: January 2024

Los procesos geológicos han sido los precursores de la formación y acumulación de minerales de interés económico en la región amazónica ecuatoriana. Históricamente, el extractivismo minero ha sido considerado una actividad productiva con fines económicos y comerciales, sin embargo, el impacto de la extracción de oro aluvial afecta de manera significativa a las comunidades locales y al medio ambiente. El objetivo de esta investigación es analizar el impacto de la pequeña minería en el agua y el suelo de un tramo del río Yutzupino y su relación con las actividades socioeconómicas de la población de la comunidad El Ceibo. El estudio se llevó a cabo seleccionando el lugar de estudio (se analizó una zona intervenida y recuperada y una no intervenida), los puntos de muestreo, y el levantamiento de información geológica. Asimismo, se realizó el análisis de la calidad del agua y el suelo, por último, se realizaron encuestas socioeconómicas a los habitantes de la comunidad. Los parámetros fisicoquímicos del agua indican que no es de baja calidad, pero hay turbidez y metales pesados en los suelos, especialmente arsénico. Se constató que los comuneros practican la minería artesanal como su principal actividad económica para cubrir sus necesidades básicas, se prevé que, de continuar las actividades mineras en la zona, se favorecerá la alteración del medio físico, así como la disminución de la calidad del agua y la degradación del suelo, imposibilitando las actividades agrícolas de no llevarse a cabo una remediación ambiental.
μσ2-Beta and μσ2-Beta Binomial Regression Models
Authors: Cepeda-Cuervo Edilberto
Published: January 2024

This paper proposes new parameterizations of the beta and beta binomial distributions as functions of the mean and variance parameters. From these new parameterizations, new beta and beta binomial linear regression models are formulated by assuming that appropriate real functions of the mean and variance follow linear regression structures. These models were fitted to real datasets by applying Bayesian methods, using the OpenBUGS software. The new beta regression models were fitted to the Dyslexia Reading Accuracy dataset and the new beta binomial regression models were applied to the School Absenteeism Dataset. In both cases, the results obtained by fitting these models were compared with those obtained by fitting the usual mean and dispersion beta regression models and the mean and dispersion beta binomial regression models, respectively.
Finite element model of measurement of intraocular pressure by the Schiøtz tonometer
Authors:   Saint-Petersburg State University, Bauer Svetlana , Venatovskaya Ludmila ,   Saint-Petersburg State University, Shalpegin Grigory ,   Saint-Petersburg State University
Published: January 2024

The finite element model describing the change of the stress-strain state of the sclera (the outer shell of an eye) loaded by an impression-type tonometer – the Schiøtz tonometer is presented. The simulation is performed with the software package ANSYS, Inc. The elastic system cornea–sclera is modeled as two thin transversely isotropic adjoint spherical shells with different radii of curvature and biomechanical properties loaded by the internal pressure and two loads with concave bases (footplate and plunger). The effect of the weight of the plunger and the thickness of the cornea on the tonometric pressure readings obtained due to the standard method of data processing for Schiøtz tonometry is studied. The obtained values are compared with the values found from the condition of constant internal volume of the deformed composite shell.
Research of dental cements properties in experiment on remote teeth reinforced by individual transdental implants
Authors:   Moscow Lomonosov State University, Dzhalalova, Margarita , Arutyunov Sergei ,   Moscow Evdokimov State Stomatologic University, Stepanov Alexander ,   Moscow Evdokimov State Stomatologic University
Published: January 2024

The paper presents the results of experimental studies of the adhesion strength at a static load on the gap of dental cement joints of an individual milled transdental implant with solid tissues of the tooth root. The samples consisted of a composition composed of a conical-shaped structure (similar to a transdental implant made of titanium alloy and zirconium dioxide) inserted into the canal of a natural tooth stump and fixed in it with cement gluing. The experiments were performed on previously removed teeth with a resected root tip in the amount of 78 units. As a result of the study, cements were identified that ensure the highest adhesive strength of the joint “individual transdental implant–dental cement–stump of an extracted tooth” in the specimen. For the root fixation of titanium alloy implants, composite Multilink-N cement is recommended, and for zirconium dioxide implants, Fuji-1 glass ionomer cement is recommended. At the second stage, the effect of artificial surface roughness of the implant on the adhesion properties of the cement joint implant–tooth was investigated. To this end, before conducting experiments on the extrusion of the pins, the samples surfaces were sandblasted with aluminum oxide granules of 50, 150, 250 microns in size. Cements were used for fixation, which showed the highest adhesive characteristics at the previous stage. It turned out that an increase in the roughness size in the range of 50–250 μm improves the adhesion parameters of the cement joint implant – tooth for all tested cements. The presence of implant roughness allows one to withstand a significantly greater load compared to a smooth implant, and an increase in the implant surface roughness value from 50 to 250 μm also significantly (almost 2.5 times) increases the load.
Investigation of thermal wave propagation within the model of biological tissue and the possibility of thermal imaging of vasomotor activity of peripheral vessels
Authors:   Saratov State University, Sagaidachnyi Andrey , Volkov Ivan ,   Saratov State University, Fomin Andrey ,   Saratov State University, Skripal Anatoly ,   Saratov State University
Published: January 2024

Presently, investigation of relationships between biomechanical processes of regulation of the lumen of peripheral vessels, blood flow dynamics and changes in skin temperature with the aim of imaging of hemodynamic dysfunction is an actual problem of biomedical engineering and diagnostics. Experimental dependences of the velocity and damping of a periodic thermal perturbation in pig skin as a model of human skin have been established in this work. The solution of the heat equation in the case of periodic heating has been used to describe the propagation of thermal perturbation (heat waves) in a human skin model. Assuming proportional changes in the volume blood flow and temperature in the depth of the skin, this will allow restoring the signal of blood flow dynamics based on data of skin surface temperature variation. The latter experimentally justifies the possibility of thermal imaging of the processes of regulation of the vascular lumen of peripheral vessels during the diagnostics and therapy of vascular complications.
Oxygen isotopic analysis of two cores from the Vema Channel, southwestern Atlantic Ocean : an evaluation of the method and results
Authors:   Woods Hole Oceanographic Institution, Peters Christopher S.
Published: January 2024

The purpose of this study is to evaluate the effectiveness of oxygen isotopic analysis in establishing a late Pleistocene stratigraphy in two cores (CHN 115-88 and CHN 115-89) from the Verna Channel. Glacial and interglacial stages and stage boundaries in the two cores were identified, based on fluctuations in the 018 curves obtained by analysis of bulk foraminiferal assemblages. The position of the Brunhes/Matuyama boundary near the base of both cores provided an estimate of average accumulation rates of 0.94 cm/103 years in core 88, and 0.86 cm/103 years in core 89. The δ 018 curve for core 88 indicates a continuous stratigraphic record of glacial and interglacial stages as far back as stage 20; stages in core 89 are identifiable as far as stage 12. Stratigraphic interpretation within the top portion of the cores is somewhat uncertain, possibly due to disturbed or missing sediment. variability in accumulation rates down-core, and the possibility of missing coretop sediment, contribute to the uncertainty in stage designations. The degree of variability of accumulation rates within cores 88 and 89 may be estimated by assuming a constant sedimentation rate, and then comparing the "time scale" of the stage boundaries with that of Shackleton and Opdyke (1973). The results indicate that oxygen isotopic analysis of bulk foraminiferal assemblages can provide reliable interpretations in some instances where analysis of monospecific assemblages is not possible. Analysis of monospecific assemblages, however, will be required for more precise and reliable paleoclimatic interpretations.
IDEA DE NEGOCIO CONSULMET (CONSULTORA DE RIESGOS LABORALES EN EL SECTOR METALMECÁNICO) CASO DE ESTUDIO S&G METALIZACIÓN SAS
Authors: Gonzalez Cabrera Cristian Juda , Garzón Caro Laura Camila , Vargas Quiñones Brayan Andrés , Gaffaro Garcia Alix Johana
Published: January 2024

Colombia actualmente desempeña el SISTEMA DE RIESGOS LABORALES a partir de la Ley 1295 de 1994 y la Ley 776 de 2002, a su vez, forma parte del Sistema de Seguridad Social Integral, establecido por la Ley 100 de 1993. Los indicadores para esta investigación, la cual argumenta un enfoque cualitativo y cuantitativo se sustentan a partir de estas entidades.El direccionamiento y base investigativa se da de una manera descriptiva hacia el sector metalmecánico, en el cual se indagará sobre las ocupaciones que lo abarcan, esto devela la siguiente problemática: visto desde las ARL y la Subdirección de riesgos laborales, se registraron un total 1.429 eventos que atentan a la seguridad laboral (accidentalidad, enfermedad y mortandad), esto, en los primeros 4 meses del año 2023 siendo el 21% de los cosos para la totalidad de ocupaciones a nivel nacional. A su vez, se indagó sobre diferentes consultoras a nivel nacional y su relación y/o experiencia en la mitigación de riesgos para el sector, llegando así a fijarnos en su modalidad de operación la cual es muy general y no tiene mayor efecto en disminuir estos eventos. Por lo cual, desde el semillero ‘Gerencia de proyectos de ingeniería e iniciativas empresariales’ de la institución universitaria Politécnico Grancolombiano, nace la idea de negocio CONSULMET, la cual, a partir de todos los conocimientos ingenieriles, metalmecánicos y de seguridad y salud se da oportuna solución a las necesidades de las empresas del sector ya mencionado. Se trazan soluciones viables desde matrices de riesgo, flujogramas, adaptaciones en ergonomía, entre otras, todo especializado en el sector metalmecánico. Concluyendo con un proyecto viable con altas posibilidades de convertirse en un negocio creciente y rentable.
IDEA DE NEGOCIO PARA LA FABRICACIÓN Y VENTA DE TORTA DE YUCA CON SALSA DE MORA-YUCAKE
Authors: Reyes Hernández Yulieth Vanesa , Bernal Sánchez Yenny Milena , García Moreno Diego Alejandro , Gaffaro Garcia Alix Johana
Published: January 2024

El principio de nuestra idea de negocio “Yucake” se basó objetivamente en el procesamiento de Torta de Yuca con salsa de Mora, aprovechando en gran medida la yuca y la mora como materias primas principales, dando un valor agregado a los alimentos tipo agrícola por medio de una idea innovadora y de excelente calidad por medio de una propuesta que aporte a la bioeconomía del país.Esta idea de negocio se diseñó y ejecutó exclusivamente para satisfacer las necesidades de alimentación y nutrición de la sociedad. Va encaminado a las personas que buscan alimentos con beneficios adicionales, es decir, alimentos ricos y funcionales.Nuestra idea de negocio tendrá distintos focos de investigación, como la implementación de un análisis cualitativos y cuantitativos de problemas estructurales y actividades que apoyan a gran escala la optimización del proceso y mejora continua del producto.
A look at the problem of intercultural communication from the position of russian student-athletes
Authors:   Ural Federal University, Yekaterinburg, Russia, Alkharouf A. S.
Published: January 2024

The aim of the study was to know student-athletes’ attitudes toward intercultural communication. 22 Russian students from the Institute of Physical Culture, Sports and Youth Policy took part in the study. To conduct the study, a questionnaire was developed by the author, including questions that reveal the features of interaction between Russian and foreign students. The results of the study showed that Russian student-athletes have a positive attitude towards communication with foreign students. At the same time, intercultural communication is quite limited due to a number of reasons, such as the «language barrier», the need to build effective interaction against the background of misunderstanding of the interlocutor, lack of emotional comfort in the communication process, as well as an insufficient number of organized extracurricular activities with foreign students. Students expressed their preference for organizing events that could contribute to the development of intercultural communication, which should necessarily include sports events. Further research may be related to the development of a program for the development of intercultural communication among students at the Institute of Physical Education.
Novos padrões tecnológicos, competitividade industrial e bem-estar social: perspectivas brasileiras
Authors: TAUILE JOSÉ RICARDO
Published: January 2024

RESUMO Este texto começa explorando o modelo japonês de relações e organização industrial como alternativa à crise do fordismo-taylorismo que ocorre nos países desenvolvidos do leste. Reconhece, para tanto, a importância da melhoria das relações capital-trabalho, ou seja, da participação dos trabalhadores nas definições e nos benefícios de objetivos comuns que resultem, por exemplo, em melhor distribuição de renda. Tomando o caso brasileiro, diagnostica-se que o atual modelo de “desenvolvimento” está levando o país ao caos. Mudanças econômicas, sociais e políticas radicais são necessárias para recriar um modelo contemporâneo de desenvolvimento capitalista baseado nas especificidades brasileiras. Nesse modelo, o bem-estar social é uma de suas principais forças econômicas, uma genuína competitividade internacional resultará naturalmente do fortalecimento do mercado interno e o trabalho não é considerado apenas um custo de produção, mas um importante recurso para a construção de vantagens comparativas dinâmicas.
Analysis of the elaboration and proposal of a Brazilian intersectoral strategy for the prevention and care of childhood obesity
Authors: Bortolini Gisele Ane , Pereira Tatiane Nunes , Carmo Ariene Silva do , Martins Ana Maria Thomaz Maya , Silva Jéssica Pedroso da , Silva Sara Araújo da , Marinho Paloma Abelin Saldanha , Lima Ana Maria Cavalcante de , Spaniol Ana Maria , Claumann Gaia Salvador , Silveira Jonas Augusto Cardoso da , Silva Juliana Rezende Melo da
Published: January 2024

Abstract: The Brazilian Strategy for the Prevention and Care of Childhood Obesity (PROTEJA) aims to implement a set of actions to prevent obesity in Brazil. As such, this qualitative and descriptive documentary study presents the Strategy’s stages of the operational design, general proposal, evaluation and monitoring conducted by the Brazilian Ministry of Health’s technical coordination. After analyzing the epidemiological data on children and the existing policies aimed at obesity prevention, and reviewing the scientific literature and recommendations, PROTEJA was formulated and approved by the Brazilian Ministry of Health, and 1,320 municipalities committed to implementing 20 essential and 5 complementary actions, from 41, including some structural to improve environments. Coordinated by the Brazilian Ministry of Health in partnership with subnational governments and universities, the Strategy also relies on a local team for implementation support, as well as implementation and impact evaluations. Actions will be monitored annually, and the indicators will impact financial incentives. As a strong, evidence-based and innovative strategy aiming to promote healthy environments in cities, PROTEJA has the potential to open a path to childhood obesity reversal, as well as add to the implementation science and contribute to the development and improvement of public policies for obesity prevention; however, its implementation remains a challenge.
Growth performance of cowpea plants grown under different ionic concentrations of the nutrient solution
Authors: Silva Francisco Weliton Rocha , Santos José Zilton Lopes
Published: January 2024

ABSTRACT: Cowpea is a food crop representing an important source of proteins and income, mainly for people living in the north and northeast of Brazil. This study aimed to evaluate the growth performance of two cowpea cultivars under four different ionic concentrations of the growth solution. Thus, a pot experiment was performed using the sand culture technique and set up in a completely randomized design with a 2 x 4 factorial scheme, using four replications and one plant per plot. After the period of growth, the parameters such as length of the shoot, stem diameter, number of leaves, number of secondary branches, number of pods, fresh weight of the stem, stem dry mass, leaf dry mass, shoot dry mass, and root/shoot ratio were obtained. The results pointed out that there was a significant interaction effect on parameters like stem diameter, leaf dry mass, shoot dry mass, and number of leaves. Both cultivars were strongly responsive to changes in ionic concentration, indicating a greater biomass production at ionic concentrations of 90% and 120%. A greater growth performance for BRS Rouxinol than BRS Itaim was observed, while the second cultivar indicated a high tolerance as exposed to the highest ionic concentrations.
Prevalência e fatores associados ao óbito de idosos hospitalizados por Covid-19 no estado do Paraná
Authors: Inoue Luiz Hiroshi , Baccon Wanessa Cristina , Pesce Giovanna Brichi , Pereira Natan David , Silva Isabela Vanessa Tavares Cordeiro , Salci Maria Aparecida , Vissoci João Ricardo Nickenig , Facchini Luiz Augusto , Carreira Lígia
Published: January 2024

RESUMO Objetivo: Estimar a prevalência e analisar os fatores associados ao óbito de idosos hospitalizados por Covid-19 no Estado do Paraná. Método: Estudo transversal conduzido com dados secundários de idosos com diagnóstico positivo de Covid-19 residentes no Estado do Paraná, coletados no período de 01 de março de 2020 a 31 de agosto de 2021. As razões de prevalências foram obtidas por meio do ajuste de modelo de regressão. Resultados: Foram analisados 16.153 óbitos de idosos hospitalizados no Estado do Paraná. O modelo ajustado revelou associação do óbito a alguns fatores como: pertencer a faixa etária dos 75 a 84 anos (RP = 1,28; IC95% = 1,24–1,32) e 85 anos ou mais (RP = 1,52; IC95% = 1,45–1,59); sexo masculino (RP = 1,17; IC95% = 1,13–1,21); obesidade (RP = 1,23; IC95% = 1,16–1,29); outras morbidades (RP = 1,25; IC95% = 1,20–1,30); e ter utilizado suporte ventilatório (RP = 2,60; IC95% = 2,33-2,86). Idosos vacinados contra a gripe tiveram probabilidade de morte reduzida em 11% (RP = 0,89; IC95% = 0,86–0,93). Conclusão: Identificou-se a associação da idade, sexo e diagnóstico de comorbidades prévias aos desfechos desfavoráveis da Covid-19. Ter recebido o imunizante contra a gripe conferiu proteção aos idosos que contraíram o SARS-CoV-2.
Effect of information quality and internal electronic integration on internal cost management and organizational performance
Authors: Poffo Rubia Frehner , Bubeck Stephan Klaus , Lunardi Micheli Aparecida
Published: January 2024

Internal electronic integration provides data integration for organizations. Through it, organizations obtain information about production costs, which allows the company to perform better in the market. In this context, this research aims to analyze the effect of information quality on internal cost management and its impact on organizational performance. This research was developed descriptively through data collection with 99 respondents, which include professionals in the positions of coordinator, senior analyst, manager, and cost supervisor of Brazilian companies. The data was measured using quantitative analysis and structural equations through the SmartPLS 4 software. This research's primary findings demonstrate that organizations with internal electronic integration between company departments have information that provides better internal cost management. These results are justified since quality information allows professionals to perform a more detailed analysis of expenses in the organization, making it possible to reduce organizational costs. Thus, correct and real-time information allows managers to make decisions that increase organizational performance and obtain a greater understanding of the internal processes involving production lines. This study presents new insights into the perception of professionals in the field of costs concerning the relationships investigated in the research. It also contributes to the managers' decisions and strategies to manage their costs and raise the company's performance.
Exploring the autism “diagnostic odyssey” in the Greater Accra region of Ghana
Authors: Akrofi Joana Nana Serwaa , Brew Yvonne Nanaama , Carreon Elaine Diandra , Cornelius Iana Yadah , Angell Amber Michell
Published: January 2024

Introduction: Despite the increasing global prevalence of autism spectrum disorders (ASD), there is limited information about ASD in Africa. Existing research on ASD in Africa shows that autistic children are diagnosed relatively late or not at all. The purpose of this study was to understand the barriers to an autism diagnosis and to engage key stakeholders to action plan steps to reduce the barriers. Methods: We conducted a participatory, mixed methods study using semi-structured interviews, a survey, photo elicitation, and focus groups with 11 participants (four parents and seven health professionals) in the Greater Accra region of Ghana. Findings: Neuro-paediatricians in our study reported that it takes, on average, two to six visits over two weeks to two years or more to diagnose a child. Our thematic qualitative analysis yielded three overarching themes, with barriers and facilitators for each: 1) Systemic, 2) Community, and 3) Parent/Family factors that influence the diagnostic process. The action plan of our stakeholder focus group prioritizes community education to dispel myths and encourage autism acceptance within the Ghanaian community. Conclusion: Knowledge about the diagnostic odyssey can help facilitate early diagnosis and intervention. Implications for practice This research study confirmed known challenges to the autism diagnostic process. It contributed nuanced insights into the role of culture, the importance of education, and the need for community involvement in improving the diagnostic process, early occupational therapy intervention, and autism acceptance within the community.
Anaphylactic Reaction With The Measles-Mumps-Rubella Vaccine In A Patient With Cow's Milk Allergy
Authors: Dikici Ümmügülsüm , Özdemir Öner
Published: January 2024

The most common food allergy in children worldwide is cow's milk allergy. The most known allergens from cow's milk proteins are casein, alpha-lactalbumin, and beta-lactoglobulin. Lactalbumin hydrolysate is used as a stabilizer in the measles mumps rubella (MMR) vaccine originating in India. Different commercial forms of the MMR vaccine are available. While neomycin stabilizes, lactalbumin hydrolysate is used in the other form. We present a patient who was followed up for cow's milk allergy and developed anaphylaxis after the MMR vaccine originating from India. A 4-year-old girl with a history of anaphylaxis with cow's milk whose vaccinations were applied by the routine vaccination schedule in the family health center. Sneezing and urticaria started 1 minute after immunization. The patient presented to the emergency department (within 10 minutes after vaccination) with severe respiratory distress and intercostal retractions. The patient was administered three doses of intramuscular adrenaline, 5 minutes apart, intravenous pheniramine and methylprednisolone, and a nebulizer short-acting beta agonist. Symptoms regressed approximately 40 minutes after hospitalization. In our patient with a history of cow's milk anaphylaxis and lactalbumin-specific immunoglobulin E value of 61.3 kU/L, anaphylactic reaction with MMR vaccine seems to be related to the lactalbumin contained in the vaccine. Families and physicians should be meticulous about reading labels in the follow-up of patients with known food allergies.
Effect of low-temperature annealing in air on the defect structure of oxide nanoparticles
Authors:   M. N. Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, Vykhodets V. B. , Kurennykh T. E. ,   M. N. Mikheev Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences
Published: January 2024

It has been found that low-temperature annealing in air changes the defect structure of YSZ10 oxide nanoparticles synthesized by means of the laser evaporation of a ceramic target. The study is carried out with the use of deuterium probes. At a temperature of 350 ℃, with increasing annealing time, a monotonic decrease in the concentration of oxygen vacancies near the surface of nanoparticles is observed. This dependence is extreme at 200 ℃; at its first stage, the concentration of vacancies in the surface atomic layer of nanoparticles increases with time. An approach is proposed for the synthesis of nanoparticles with severe oxygen deficiency near the surface of oxide
Deformation of Al–Zn–Mg–Cu composite samples under nonstationary thermomechanical conditions
Authors:   Institute of Engineering Science, Ural Branch of the Russian Academy of Sciences, Kryuchkov D. I. , Pugacheva N. B. ,   Institute of Engineering Science, Ural Branch of the Russian Academy of Sciences, Bykova T. M. ,   Institute of Engineering Science, Ural Branch of the Russian Academy of Sciences
Published: January 2024

The paper studies the technology of deformation and heat treatment of an aluminum-matrix composite material under nonstationary conditions, which is upsetting with gradual heating to near-solidus temperatures under mild loading conditions. The composite material is based on the V95 aluminum alloy discretely reinforced with 10% of SiC particles. The purpose of the study is to compare the deformation behavior of the samples and analyze their microstructure under different conditions of thermal deformation processing. The structure of the material is studied by optical and electron scanning microscopies. The paper discloses the behavior of the rate of relative strain as dependent on temperature, as well as the features of structure formation in an aluminum-matrix composite depending on the heating conditions. The most pronounced differences are found in the central part of the samples closer to the deforming tool (flat dies). On the symmetry axis in the central region of the samples there are differences in the crystallographic orientations of the material textures. Microhardness values and their distribution on the section are obtained. For the sample with slow heating, there is no tendency for the increase of the microhardness values in the regions with high values of plastic strain, this being indicative of a more complete recrystallization process and lower dislocation density.
A statistical method for determining the mode of ion-plasma nitriding
Authors:   Ural Federal University, Baraz V. R. , Ishina E. A. ,   Ural Federal University, Yurchenkov E. A. ,   Ural Federal University
Published: January 2024

Mathematical planning is used in order to determine the optimal mode for ion nitriding of the 38Cr2Ni2Mo structural steel. This is justified by the requirement to preserve strictly limited functional parameters obtained as a result of diffusion saturation: hardness ranging between 450 and 650 HV in a 0.15–0.40-mm-deep layer. The implementation of factor planning and the regression processing of the obtained data enable us to arrive at an analytical expression in the form of a linear function for the studied optimization parameters (microhardness and layer depth). This makes it possible to assess the degree and direction of the influence of the factors under study on the optimization parameters of interest.