bluuebunny/crossref_metadata_2025_split huggingface dataset:
KONSEP DAN AKTIVITAS MATEMATIKA DALAM PERMAINAN PATHENG DUDU
Authors: Hariastuti Rachmaniah Mirza , Budiarto Mega Teguh , Manuharawati Manuharawati , Supahmi Novita Purnamasari 
Published: September 2023

Patheng dudu adalah salah satu permainan tradisional dari Banyuwangi yang memuat konsep dan aktivitas matematika. Penelitian ini bertujuan mengeksplorasi permainan patheng dudu dan mengidentifikasi konsep-konsep serta aktivitas matematika yang termuat dalam permainan tersebut. Penelitian dilakukan secara kualitatif dengan pendekatan etnografi. Pengumpulan data dilakukan dengan metode wawancara dan observasi partisipatif. Informan penelitian adalah tiga orang yang memahami aturan dan dapat memainkan patheng dudu. Analisis data dilakukan secara kualitatif. Hasil penelitian menunjukkan adanya konsep polihedron, poligon, membilang, perbandingan, pengukuran dengan satuan baku dan tidak baku, sudut dan jenisnya, hubungan antar garis, statistika, himpunan, jarak, waktu, serta fungsi dalam permainan patheng dudu. Sedangkan aktivitas matematika yang terdapat dalam permainan patheng dudu adalah perhitungan (counting), penempatan (locating), pengukuran (measuring), perancangan (designing), permainan (playing), dan penjelasan (explaining).
PENGEMBANGAN MODUL REALISTIC MATHEMATICS EDUCATION BERBANTUAN QR CODE PADA MATERI RELASI DAN FUNGSI
Authors: Aghnia Rahma Bella , Dwirahayu Gelar , Firdausi Firdausi 
Published: September 2023

Penelitian ini bertujuan untuk mengembangkan modul pembelajaran dengan pendekatan Realistic Mathematics Education (RME)berbantuan QR Code. Dalam modul ini siswa mempelajari materi relasi dan fungsi dengan bantuan video pembelajaran yang dikemas di dalam QR Code dengan pendekatan RME. Metode penelitian ini adalah metode penelitian dan pengembangan dengan model pengembangan 4-D, yaitu define, design, develop, dan dissemination. Pada tahap define dilakukan analisis terhadap kesulitan siswa, kebutuhan guru, dan materi. Pada tahap design dilakukan tahap perancangan tujuan pembelajaran, perancangan materi, perancangan desain dan alur modul, pembuatan video pembelajaran, sampai perancangan instrumen penilaian modul. Pada tahap develop dilakukan tahap realisasi terhadap rancangan modul, validasi, revisi, dan uji coba. Pada tahap disseminatedilakukan tahap penyebaran modul terhadap 27 siswa dan dilakukan uji efektivitas. Modul yang dihasilkan memperoleh kriteria layak dari para validator dan memperoleh kriteria efektif berdasarkan ketuntasan siswa. Modul Realistic Mathematics Education berbantuan QR Code pada materi relasi dan fungsi yang dikembangkan telah layak dan efektif untuk digunakan.
PENGGUNAAN GOOGLE CLASSROOM DENGAN PROBLEM BASED LEARNING TERHADAP KEMAMPUAN REPRESENTASI MATEMATIS SISWA
Authors: Atiqoh Khamida Siti Nur , Ranaista Jihan Abiyyah , Musyrifah Eva 
Published: September 2023

This study aims to determine the use of Google Classroom with Problem Based Learning model on students' mathematical representation abilities. This research was conducted at SMP Negeri 17 Tangerang Selatan City in the 2021/2022 academic year. The method used in this research is descriptive quantitative method, the test instrument has given in the form of 6 test items for mathematical representation ability and student response questionnaires in learning mathematics by Google Classroom with Problem Based Learning model. The research instrument was given to 78 students as research subjects. The results of this study are: the use of Google Classroom in learning mathematics with the Problem Based Learning model can be implemented by utilizing the features available in Google Classroom. The mathematical representation ability of students who learn by using Google Classroom with Problem Based Learning model as a whole is in the medium category. The positive response of students who learn mathematics using Google Classroom with Problem Based Learning model cumulatively 73.89% is in the high category.
KECEMASAN MATEMATIS PESERTA DIDIK PADA FENOMENA LEARNING LOSS PASCA PANDEMI COVID-19
Authors: Hamidah Zahrah , Nugraheni Esti Ambar 
Published: September 2023

Kecemasan matematis adalah kondisi tidak enak yang disebabkan oleh perasaan yang tidak beraturan dan biasanya ditujukan dengan rasa gelisah, khawatir, dan takut ketika sedang belajar matematika. Penelitian ini bertujuan untuk mengidentifikasi tingkat kecemasan matematis peserta didik pada feomena learning loss pasca pandemi Covid-19. Penelitian ini merupakan penelitian kuantitatif dengan metode penelitian deskriptif. Sampel penelitian ini berjumlah 60 responden. Subyek penelitian ini adalah peserta didik pada tingkat Sekolah Menengah Pertama (SMP) yang berlokasi di kabupaten bekasi. Hasil penelitian ini menunjukan bahwa kecemasan matematis pada fenomena learning loss pasca pandemi covid-19 berada pada kategori sedang dengan persentase 63.3% untuk kelas VII dan 70% untuk kelas VIII. Kecemasan matematis peserta didik pada aspek afektif yang berada diindikator sedang adalah takut dan gelisah. Kecemasan matematis peserta didik pada aspek kognitif yang berada diindikator sedang adalah sulit konsentrasi. Kecemasan matematis peserta didik pada aspek fisiologis yang berada diindikator sedang adalah jantung berdebar kencang dan sakit kepala.
Microbiological monitoring of antibiotic resistance of strains of Streptococcus agalactiae among pregnant women
Authors: Lusta M. , Voronkova O. , Finkova O. , Moskalenko L. , Tatianenko M. , Shyrokykh K. , Falko O. , Stupak O. , Moskalenko T. , Sliesarenko K. 
Published: September 2023

Group B Streptococcus (GBS) is the causative agent in 2–7% of all urinary tract infections (UTI), including asymptomatic bacteriuria (AB), cystitis, and pyelonephritis. We used the bacteriological quantitative method of sowing urine samples of pregnant women on Columbia agar with 5% lamb blood), Strepto B chromogenic agar and Todd Hewitt broth, identification of GBS strains with determination of sensitivity to bacitracin, hippurate hydrolysis test and CAMP test. Susceptibility to antimicrobial drugs was determined by the disk-diffusion method according to recommendations of the European Committee on Antimicrobial Susceptibility Testing. For the period of 2021, out of 3,356 urine samples of pregnant women, there were 149 samples of the investigated biomaterial with a positive result for GBS (resultancy – 4.4%). It was established that among the studied contingent, 41 strains of GBS were isolated in the first trimester of pregnancy (27.5%), in the second trimester – 59 strains (39.5%), in the third trimester – 49 strains (33.0%). It is established that out of the 149 strains of GBS, 38 strains (25.0%) were resistant to norfloxacin, 45 strains (30.0%) to erythromycin, 41 strains (28.0%) to clindamycin,125 strains (84.0%) to tetracycline, 20 strains (13.0%) to levofloxacin, 3 strains (2.0%) to nitrofurantoin. All strains of Streptococcus agalactiae were found to be sensitive to benzylpenicillin. The number of resistant strains of SGB identified from the urine of pregnant women was 47 strains. All resistant strains were resistant to at least three groups of antibacterial drugs, except beta-lactams. The results of the scientific research will allow us to obtain dynamic data on the antibiotic resistance of GBS strains in order to study the rate of development of antibiotic sensitivity of this microorganism. In the future, the research data can be used by scientists when reviewing protocols for the treatment of urinary tract infections in pregnant women.
Systemic juvenile idiopathic arthritis in the pediatric practice of Donetsk region
Authors: Koniushevska A. A. , Vaiser N. V. , Kuzevanova M. V. , Gerasymenko V. V. , Tymoshyna O. V. , Polesova T. R. 
Published: September 2023

Juvenile idiopathic arthritis with systemic onset is a special, rare and the most severe variant of juvenile idiopathic arthritis. The article analyzes the clinical features of the onset and course of juvenile idiopathic arthritis with systemic onset in children living in the ecologically disadvantaged Donetsk region and the efficacy of therapy. Clinical cases are described. According to its clinical manifestations, the systemic variant of juvenile idiopathic arthritis is characterized by the severity of the general inflammatory response, a bright clinical picture, severe damage to internal organs, the development of polyserositis, can lead to the development of life-threatening conditions, such as macrophage activation syndrome, and also leads to the formation of deforming arthritis with early disability of the sick child. The relevance of studying the problem of juvenile idiopathic arthritis with a systemic onset is related to the late diagnosis of the disease, because at the onset of the disease there may be no joint syndrome, and therefore it is impossible to use the criteria of the International League of Rheumatology Associations to verify the diagnosis, which leads to diagnostic errors. Nonsteroidal anti-inflammatory drugs, glucocorticosteroids, and immunosuppressants are used for treatment. The prescription of genetic engineering biological therapy, the choice of the drug, is carried out according to the recommendations of the American College of Rheumatology, depending on the preference for systemic or joint manifestations of the disease. But the question of the optimal approach to regimens of dose reduction, duration of biological therapy, and rules for its withdrawal remains open. Until now, the optimal approach to the treatment of juvenile idiopathic arthritis with a systemic onset is unknown. To date, the issue of treatment in patients with pharmacoresistant variants and persistent course of the disease has not been solved. Therefore, further in-depth study of this problem, optimization of the diagnostic algorithm and an individual approach to therapy are needed.
CONSIDERATION OF THE EFFECT OF CRYOGENIC TEMPERATURES ON THE FATIGUE OF RESOURCED ALLOYS BY MEANS OF ACOUSTIC EMISSION
Authors: Nosov V.V. , Perveitalov O.G. 
Published: September 2023

The article provides an example of the implementation of fatigue life calculation, which uses a multi-level acoustic emission model to obtain the parameters included in the equation of the kinetic concept of strength. Using the data obtained during acoustic emission tests for crack resistance of titanium alloy samples PT-3V at three temperature levels: 293, 77 and 4 K, concentration-kinetic indices of XAE strength and YAE were calculated, which carry information about the unique nature of damage accumulation for this object in the form of a structural γ coefficient included in the Zhurkovthermoeluktuation equation. These parameters were selected from the deformation sites of the samples, which, according to the results of microstructural analysis, showed the presence of many microcracks with different directions of propagation, which were associated with the accumulation of destructive damage in the elastoplastic region. The obtained kinetic parameters: the energy of activation of U0 destruction and the γ parameter were used to estimate the fatigue life of the samples using a formula that takes into account the sinusoidal change in stresses during cyclic loading and is also based on the kinetic concept of strength. Taking into account the changes in temperature in the cycle due to the thermoelastic effect, it was possible to obtain fatigue curves similar to those obtained for the titanium alloy at the same temperatures. Fatigue curves of similar properties of titanium alloy destroyed by cyclic loading at the same temperatures were used for comparison. It has been proved that the slope of fatigue curves, as an individual characteristic of the material, is determined by the concentration-kinetic values of XAE and YAE obtained during static tests.
DEVELOPMENT AND APPLICATION OF NEW COMPOSITIONS TO IMPROVE THE EFFICIENCY OF OIL FIELD EQUIPMENT OPERATION
Authors: Mammadov K.A. , Gamidova N.S. , Gazieva R.K. , Akhmedova A.V. , Ibragimova G.B. , Aliyev T.S. 
Published: September 2023

One of the urgent problems in the oil industry is the reliable protection of oil field equipment from corrosion. With this in mind, as a result of laboratory studies, three compositions were developed based on phospholipids, fatty acids, phosphoric acid, nitrogen compounds, asidol, naphthenic acids and light gas oil. The complexity of the composition gives the resulting compositions multifunctionality and allows them to be used in various aggressive conditions.
In laboratory conditions, the effect of these compositions on the corrosion rate of metals and on the vital activity of sulfate reducing bacteria (SVB) was studied. Based on the obtained results, the concentration of the compositions (500 mg/l) was established, providing a protective effect against corrosion, which was 94–95 %, and the degree of suppression of SVB was 97–99 %.
Field tests of corrosion inhibitors also yielded positive results: the protective effect against corrosion was 89–90 %, and the degree of SVB suppression was 92–97 %.
SUBSTANTIATION OF SELECTION OF DRILLING MUD TYPE FOR INITIAL OPENING OF KHAMAKINSKY HORIZON TERRIGENOUS RESERVOIR
Authors: Parfiryev V.A. , Ovchinnikov V.Р. , Druzhinina I.V. , Zakirov N.N. , Ovchinnikov P.V. , Rozhkova O.V. 
Published: September 2023

Most of the explored and estimated oil reserves of the East Siberian oil and gas province are located in the Republic of Sakha (Yakutia), and in particular, the field is located on the territory of the Lensky district, the development object of which is the formation of the Hamakinsky horizon. The reservoir is characterized by high reservoir properties, oil-saturated thickness, medium permeability, abnormally low pressures, low temperature, the presence of carbonate, terrigenous, chemogenic and karst rocks in the geological section, tectonic deformations, reservoir intrusions and salt-saturated interlayers. These factors create problems in the process of its initial opening, and during further operation cause the deterioration of its filtration and capacitance properties compared to those stated in the design documentation. The use of highly mineralized or anhydrous drilling fluids recommended for drilling wells in the considered oil and gas zone does not allow to overcome the instability of rheological properties, an increase in the values of the filtration index, deep clogging of the reservoir, the accumulation of fluid density and the risk of high repression on the reservoir.
The article theoretically substantiates the expediency of using invertemulsion solutions (IES) for the initial opening, the effectiveness of which, compared with aqueous solutions, is expressed in the exclusion of the formation of sludge crusts, stable formation oil-water emulsions and swelling of anhydrite, and the reduction of clogging effect in the near-wellbore part collector.
Nevertheless, in order to justify the introduction of one or another composition (type) of IES at the stage of theoretical research, various compositions based on mineral oil, diesel fuel, oil obtained in the course of earlier laboratory tests were considered for comparison with water-based solutions, taking into account required density and clogging action of the flushing fluid, physical and chemical inertness of the dispersed phase of the solution, low formation temperature.
The substantiation of the most effective type of fluid was carried out using a methodology based on the method of analysis of hierarchies, the optimality criterion in which is the largest weighted average value of the superiority (priority) of one of the drilling fluid options over others simultaneously in all parameters, taking into account the degree of importance of the latter. Based on estimates of normalized and ideal priorities, it has been established that its highest value, both in the case of a distributed synthesis method and in the ideal one, belongs to oilbased IES.
Rol productivo y reproductivo de las mujeres cultivadoras de hortalizas: el caso de las veredas Chochomayo, Montañita y San José del municipio de Marinilla, Antioquia. Colombia
Authors: Pérez Tamayo Eliana María 
Published: September 2023

En este artículo se analizó el rol productivo y reproductivo de un grupo de mujeres cultivadoras de hortalizas del municipio de Marinilla, ubicado en el departamento de Antioquia (Colombia), la región seleccionada para este trabajo se considera como una de las principales productoras de este tipo de alimentos en el Oriente Antioqueño y es en esta producción donde se sustenta todo su desarrollo socioeconómico. Para el análisis del rol de la mujer cultivadora de este tipo de productos, se utilizó una metodología cualitativa cuya base fue el método etnográfico. Se seleccionaron en la zona de estudio tres veredas al azar: Chochomayo, Montañita y San José, y en ellas se realizaron 23 entrevistas en profundidad a 18 mujeres y 5 hombres agricultores de la región. El estudio ofrece una visión global del papel actual y cambiante que en estas veredas ejerce la mujer como productora de alimentos y, en particular, de hortalizas. Para ello, se examinaron cuidadosamente las actividades productivas (siembra, cuidado, cosecha y postcosecha) y reproductivas (administración del hogar, educación de los hijos y cuidado de la salud y nutrición de la familia); así se estableció la importante participación de la mujer en la producción agrícola municipal y su incidencia en la seguridad alimentaria y nutricional familiar y local. Se recomiendan acciones para eliminar las restricciones sociales y económicas impuestas por los hombres y se promueven las condiciones que faculten a la mujer para un desempeño más eficaz y eficiente de su rol como productora de hortalizas y agente fundamental en el cuidado de la salud y la seguridad alimentaria y nutricional familiar.
Nutrición dieta y salud
Authors: García García Isabel 
Published: September 2023

Los investigadores especializados en el estudio de los alimentos y la nutrición se han dedicado durante el milenio pasado a modificar los alimentos o formularlos con miras a provocar efectos específicos fisiológicos y nutricionales que mejoren la salud. Durante la primera mitad del siglo XX los trabajos en nutrición estuvieron dirigidos al problema de la desnutrición y la estrategia para modificar alimentos en el sentido de corregir diferentes deficiencias nutricionales. Sin embargo en la segunda mitad del siglo el objetivo principal estuvo centrado en el estudio de la sobrealimentación y los intereses de modificar alimentos asociados con las enfermedades crónicas desarrolladas en mayor medida debido a los malos hábitos alimentarios de la vida moderna y al envejecimiento de la población al mejorar las esperanzas de vida. Los suplementos dietéticos, los alimentos fortificados, los Pre y Probióticos, la presencia de los ácidos grasos (03y (06, los lípidos estructurados, la soya como fuente de moléculas bioactivas, las sustancias antioxidantes y la fibra, son alimentos, compuestos y microorganismos que deben estar presentes de una forma u otra en la dieta para mantener la salud de la población. En este trabajo son presentados datos interesantes y actuales sobre la estrategia de los alimentos funcionales.
Evaluación antropométrica de la mujer gestante
Authors: Restrepo Mesa Sandra , Manjarrés Correa Luz Mariela , Arboleda Gómez Rubiela 
Published: September 2023

Objetivo: evaluar el estado nutricional de las gestantes asistentes al programa prenatal de la Empresa Social del Estado Hospital Gilberto Mejia Mejia del Municipio de Rionegro, por medio de indicadores antropométricos (diciembre de 1998 y marzo de 1999). Metodología: estudio descriptivo de corte transversal en 59 gestantes sanas con edades entre 18 y 40 años, en diferentes semanas de gestación. Para definir el perfil antropométrico se consideraron: el peso, la estatura, los pliegues de grasa, la altura uterina y la circunferencia muscular del brazo. Resultados: 54% de las gestantes presentó sobrepeso u obesidad y el 21% presentó déficit de peso. Se encontró correlación estadísticamente significativa y directamente proporcional entre el IMC y el porcentaje de adecuación del peso para la edad gestacional y entre el IMC y los pliegues de grasa corporal (P< 0.05). Conclusión: un alto número de gestantes (75%) presentaron alteración de su estado nutricional, por déficit o por exceso de peso, aspecto que puede afectar la salud de la madre durante el desarrollo de la gestación y poner en riesgo la salud actual y futura del niño. El análisis estadístico se realizó con los programas EPIINFO 6.0 y el statistic 4.0. El promedio y la desviación estándar fueron utilizadas para describir las variables de interés y se aplicaron pruebas de correlación para explorar una posible asociación entre variables cuantitativas.
Diagnóstico, manifestaciones clínicas y aspectos bioquímicos que fundamentan el tratamiento nutricional de las glucogenosis que afectan el hígado
Authors: Velásquez Rodríguez Claudia María , Sepúlveda Hincapié María Elsy , Yepes Palacio Nora Luz 
Published: September 2023

Las enfermedades por almacenamiento del glucógeno, llamadas glucogenosis, conforman un grupo de desórdenes metabólicos hereditarios, en los cuales se altera el metabolismo del glucógeno con el almacenamiento anormal del mismo en algunos órganos especialmente el hígado y el músculo. La glucogenosis se clasifica, de acuerdo con la enzima deficiente, en doce tipos principales y algunos de ellos se diferencian en subtipos. Los tipos de glucogenosis que responden a tratamiento nutricional son aquellos que afectan fundamentamente el hígado, las tipo III, IV ,VI y IX. Por alterar la función hepática, estas enfermedades producen manifestaciones clínicas similares, pero con diferente intensidad, según el tipo de enzima deficiente. La identificación de la clase de glucogenosis que afecta al paciente es de gran importancia para orientar el tratamiento, puesto que, la terapia nutricional debe plantearse de manera específica, según la vía metabólica que se altere como consecuencia de la deficiencia enzimática particular. En este artículo se hace una revisión dei diagnóstico, las manifestaciones clínicas y los aspectos bioquímicos que fundamentan el tratamiento nutricional de las glucogenosis que afectan el hígado.