bluuebunny/crossref_metadata_2025 huggingface dataset:
Luminescence and temperature-sensing properties of Li+, Na+, or K+, Tm3+, and Yb3+ co-doped Bi2WO6 phosphors
Authors: Xiakeer Arepati , Wang Linxiang , Maimaiti Munire , Feng Xin , Jiang Mengliang
Published: September 2023

A series of Li+, Na+, or K+, Tm3+, and Yb3+ co-doped Bi2WO6 upconversion phosphors were prepared by a high-temperature solid-phase method at 800°C for 3 h. X-ray diffraction showed that Li+, Na+, K+, Tm3+, and Yb3+ doping did not affect the orthorhombic structure of the Bi2WO6 matrix. Scanning electron microscopy images of the Bi2WO6:1% Tm3+, 6% Yb3+ and 1% Li+, 1% Na+, or 1% K+-doped Bi2WO6:1% Tm3+, 6% Yb3+ samples reveal irregular particles with a 0.5–5 µm particle size range; upon Na+ or K+ doping, the particle size increases and the particle surface becomes smooth. EDS analysis shows that the above ions are well incorporated into the powder particles. At 298 K, the relative temperature sensitivities are 0.00144, 0.0016, 0.0024, and 0.0018 K−1 for the 1% Tm3+, 6% Yb3+:Bi2WO6 samples without alkali metal ions and doped with 1% Li+, 1% Na+, or 1% K+ based on the thermally coupled energy level 3F3/3F2 characterization temperature. However, under the same conditions, when using the nonthermally coupled level 3F3/1G4 characterization temperature, the relative temperature sensitivities of these four samples are 0.0378, 0.0166, 0.046, and 0.0257 K−1, increasing by 26.3, 10.3, 19.1, and 13.9 times, respectively. The relative temperature sensitivities of the 1% Na+, 1% Tm3+, and 6% Yb3+:Bi2WO6 samples are the highest at 298 K.
Experimental study on the seismic performance of short shear walls comprising cold-formed steel and high-strength reinforced concrete with concealed bracing
Authors: Gan Min , Yu Yu , Wan Zhonghai
Published: September 2023

This study investigates the seismic performance of a composite structure comprising cold-formed steel and high-strength concrete. Four short shear walls composed of cold-formed steel and high-strength concrete, namely, one specimen without diagonal bracing, one with angle-steel bracing, and two with lattice bracing, were designed for testing their low cyclic loading. The cracking load, ultimate displacement, maximum horizontal bearing capacity, failure process, hysteretic curve, and skeleton curve of the four specimens were obtained during the test. The results showed that the use of cold-formed steel-concealed bracing in the high-strength concrete short shear wall can effectively change the failure mode of the wall into bending shear failure with good ductility. An analysis of the energy dissipation of the four specimens revealed that the energy dissipation capacity and ductility of high-strength concrete short shear wall with cold-formed steel concealed bracing were improved, indicating that the use of cold-formed steel concealed bracing greatly improved the total energy dissipation capacity of high-strength concrete short shear wall. The calculated shear bearing capacity in the diagonal section of the wall with concealed bracing was compared with the measured one. Considering specifications, a formula for calculating the shear capacity in the oblique section of short shear wall with concealed bracing was proposed.
Green ionic liquids with high corrosion inhibition of steel rebars in cement pore solution
Authors: Barakat Mahmoud M. , Nessim Maher I. , El-Rehim Sayed S. Abd , Elbassiouny Fakhry A. , Deyab Mohamed A.
Published: September 2023

For the prevention of steel rebar corrosion in cement pore solutions, new ionic liquids with an imidazole base were tested using the polarization and mass loss methods. The structure of the cations of imidazole base ionic fluids with various derivatives makes them good mixed-type inhibitors by adsorbing them on steel bars to suppress both anodic and cathode processes. The best performance efficiencies recorded by mass loss and polarization methods at 100 ppm were 97.4 and 96.1 %, respectively. These results will motivate numerous researchers to continue their arduous research to identify new ionic liquids’ anti-corrosion properties in the field of concrete additives.
Spinal posture assessment and low back pain
Authors: Du Shu-Hao , Zhang Yong-Hui , Yang Qi-Hao , Wang Yu-Chen , Fang Yu , Wang Xue-Qiang
Published: September 2023

Postural assessment can help doctors and therapists identify risk factors for low back pain and determine appropriate follow-up treatment.

Postural alignment is not perfectly symmetrical, and small asymmetries can instead represent norms and criteria for postural evaluation.

It is necessary to comprehensively observe patients’ posture in all directions and analyze the factors related to posture evaluation.

The results of reliability show that in general intra-rater reliability is higher than inter-rater reliability, and inclinometers are being more reliable than other instrumentations.

Some common postural problems can cause lumbar discomfort, and prolonged poor posture is a potential risk factor for lumbar spine injuries.

On the basis of previous studies on posture evaluation, a unified standardized method for posture evaluation must be established in future research.
Identification of Forest Fire Vulnerable Forest Types and Suitable Areas for Forest Restoration in Sri Lanka
Authors: Heenatigala Mohan , Duh Geoffrey
Published: September 2023

Abstract: Forest fire is the main driver on deforestation that severely impact for the forest resources annually. As per the past records of forest fires from the Forest Department, annually about 100ha to 1000ha of forest and forest plantation were destroyed due to forest fire in Sri Lanka. According to the current government mandate called “Vistas of Prosperity of Splendors”, percentage of forest cover of Sri Lanka will be increased from 29.7 to 30 at the end of 2025. In order to achieve this target, forest degradation and deforestation need to reduce while improving the forest restoration activities. In this study shape file like forest cover, population density, forest fire ignition points, temperature and rainfall data from 2000 to 2020, slope and elevation data were used to analysis. Using several GIS tools such as special joints, intersect tools forest fire vulnerable forest type maps was created by using Arc GIS pro software. Multi-criterial analysis technique was used to perform to identification of site suitability for replanting activities. Findings clearly indicated that dry monsoon forests are having high vulnerability for the forest fires followed by the forest plantation. The forested areas that are having canopy cover equal of less than 15% are the area which are more suitable for forest cover enhancement programs. Scrubland, Open and Sparse forested areas that are located in Rathnapura and Kaluthara districts are the best forested areas that can be highly recommended for forest restoration activities. On the other hand, Open and Sparse Forest, Savanah, and Scrubland forested land areas in Monagarala, Hambanthota, Ampara, and Batticaloa Districts can be used for the forest restoration activities.
PROFIL PEMAHAMAN KONSEP MATEMATIKA BENTUK ALJABAR PADA SISWA DENGAN GAYA BELAJAR KOGNITIF FIELD INDEPENDENT
Authors: Selviana Mina Tika , Yayan Sugiyanti , Pramasdyahsari Agnita Siska
Published: September 2023

Mathematical understanding is the process of placing knowledge that is being studied and then relating it to the knowledge that students already have. This study aims to determine the profile of understanding the mathematical concept of algebra in terms of field independent cognitive style. This is a descriptive qualitative research. The subjects taken were seventh grade students at a State Junior High School in Semarang in the 2nd semester of the 2020/2021 academic year who had a field independent cognitive style. Data collection was carried out by GEFT test, mathematical concept understanding test, and interviews. The data analysis technique was carried out in 3 stages, namely data reduction, data presentation, and conclusion drawing, then a triangulation method was carried out. The results of the analysis shows that the fulfillment of all indicators of understanding mathematical concepts to the maximum is indicated by students being able to answer all questions that contain indicators of understanding mathematical concepts. Subjects with field independent cognitive style have a good ability to understand the concept of algebraic forms.
TECHNIQUES OF SOLVING RATIONAL INEQUALITIES
Authors: Jupri Al
Published: September 2023

The topic of rational inequalities is taught at high school and university mathematics. Both high school students and college students still have difficulty solving rational inequalities. This study aims to describe techniques for solving rational inequalities. To reach this aim, a qualitative study using the document analysis method was carried out. Analyzed documents in this study include secondary school mathematics textbooks, test preparation textbooks for university entrance, Calculus and Basic Mathematics for university students’ textbooks, and relevant articles on rational inequalities. The results of this study included descriptions of techniques for solving rational inequalities,  including the techniques of number line, of analysis, and of graph aided with the GeoGebra software. It can be concluded that the three techniques of solving rational inequalities complement each other for understanding the meaning and the process of solving rational inequalities.
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.
MENINGKATKAN KEMAMPUAN BERPIKIR ALJABAR SISWA DENGAN PENDEKATAN REALISTIC MATHEMATICS EDUCATION (RME)
Authors: Musyrifah Eva , Nurasiah Desy , Hafiz M.
Published: September 2023

Berpikir aljabar adalah kemampuan menganalisis, menggeneralisasi, memodelkan, membuktikan, memprediksi, dan menyelesaikan masalah dengan menggunakan simbol, pola, dan bilangan yang digambarkan dalam bentuk kata-kata, diagram, tabel, grafik, dan persamaan. Tujuan dari penelitian ini adalah untuk menguji pengaruh positif pendekatan RME terhadap kemampuan berpikir aljabar siswa dan untuk mengetahui besarnya pengaruh tersebut. Penelitian ini merupakan jenis penelitian kuasi eksperimen dengan desain penelitian Randomized Posttest Only Control Group Design. Terdapat sebanyak enam puluh siswa kelompok X IPA yang berpartisipasi dalam penelitian ini. Penentuan jumlah sampel dilakukan dengan menggunakan Cluster Random Sampling. Metode pengumpulan data terdiri dari tes kemampuan berpikir aljabar sebanyak tiga belas soal. Dengan kata lain, nilai rata-rata kemampuan berpikir aljabar siswa yang diajar dengan pendekatan RME lebih besar daripada siswa yang diajar dengan pendekatan konvensional. Hasil penelitian juga menunjukkan bahwa pendekatan RME memberikan pengaruh yang sedang terhadap kemampuan berpikir aljabar siswa. Oleh karena itu, RME dapat digunakan untuk meningkatkan kemampuan berpikir aljabar siswa sebagai salah satu alternatif model pembelajaran.
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.
Autoinflammatory Diseases/Periodic Fevers
Authors: Schutt Christina , Siegel David M.
Published: September 2023

Children with intermittent fevers present to pediatricians and other primary care child health providers for evaluation. Most patients will have self-limited, benign infectious illnesses. However, the possibility of a periodic fever syndrome should be considered if febrile episodes become recurrent over an extended period and are associated with particular signs and symptoms during each attack. This review discusses the current conceptualization of autoinflammatory diseases with specific focus and detail on familial Mediterranean fever; tumor necrosis factor receptor–associated periodic syndrome; mevalonate kinase deficiency; NLRP3-associated autoinflammatory disease; and periodic fever, aphthous stomatitis, pharyngitis, and adenitis. The genetic mutations associated with these clinical entities are identified, along with the historical nomenclature that predates the current pathogenetic understanding of these diseases. The episodic signs and symptoms seen across these periodic fever syndromes can be overlapping, but there are some distinguishing features that can be useful, and these are described. The disease course and potential complications, particularly amyloidosis, which is a variable risk in these conditions and a potential source of significant morbidity and mortality, are addressed. Treatment strategies are outlined, highlighting the advances in therapy that have resulted from the advent of proinflammatory cytokine–targeting biological agents.
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.
Risk factors predisposing children to food allergies
Authors: Firtin Ecem , Turan İsilay , Ozceker Deniz , Buyuktiryaki Betul , Hancioglu Gonca , Ulas Selami , Naiboglu Sezin , Aydogmus Cigdem , Sancak Recep , Çeliksoy Mehmet Halil
Published: September 2023

Background: Food allergies are the most common cause of anaphylaxis in children, and their incidence is increasing globally. The aim of this study was to determine the risk factors leading to food allergies in childhood.
Methods: Children with food allergies and non-atopic healthy children were compared using a questionnaire that included prenatal, neonatal, and postnatal risk factors.
Results: A total of 314 subjects, 155 patients and 159 healthy children for the control group, were enrolled in the study. The median age of patients with a food allergy at diagnosis was 6 months (1–156 months), and 71 patients (45.8%) were males. The median age of the control group was 12 months (1–61 months), and 67.0% were males. Older maternal age (P = 0.023), birth by caesarean section (P = 0.001), birth in the summer or autumn (P = 0.011), crowded housing (P = 0.001), damp houses (P = 0.001), being fed with breast milk and complementary food (P = 0.001), use of synthetic bedding (P = 0.024), and being the oldest child in the family (P = 0.001) were the considered risk factors for an immunoglobulin-E (IgE)-mediated food allergy. A low frequency of yoghurt consumption by mother (P = 0.001) and use of wool bedding (P = 0.018) were identified as risk factors for non-IgE-mediated food allergies. Low socioeconomic status (P = 0.001) played a protective role against both IgE- and non-IgE-mediated food allergies whereas breastfeeding played a protective role against IgE-mediated food allergies (P = 0.030).
Conclusion: The most important aspect of this study was that it separately identified pre-natal, neonatal, and postnatal risk factors for IgE- and non-IgE-mediated food allergies.
Knockdown of PHLDA1 alleviates sepsis-induced acute lung injury by downregulating NLRP3 inflammasome activation
Authors: Meng Lijun , Gu Tijun , Wang Jinhai , Zhang He , Nan Chao
Published: September 2023

Objective: To investigate the regulatory mechanism of pleckstrin homology-like domain, family A, member 1 (PHLDA1) in sepsis-induced acute lung injury (ALI).
Method: Mice model of sepsis were established by cecal ligation and puncture (CLP). The expression of PHLDA1 was reduced by injecting short hairpin RNA (shRNA)–PHLDA1 into the tail vein. The levels of PHLDA1, pro-inflammatory cytokines, such as interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), IL-1β, IL-18, super-oxide dismutase (SOD), malondialdehyde (MDA), and glutathione (GSH), molecular mechanism related to pyroptosis, such as caspase 1, adaptor apoptosis-associated speck-like protein containing a CARD (ASC), and gasdermin D (GSDMD)-N, and nucleotide oligomerization domain (NOD)-like receptor family pyrin domain-containing 3 (NLRP3) were tested by Western blot analysis, quantitative real-time polymerase chain reaction, and enzyme-linked-immunosorbent serologic assay. Pathological changes in lung tissues were examined by hematoxylin and eosin staining. Wet–dry weight ratio of lung tissues was observed.
Results: The expression of PHLDA1 was up-regulated in lung tissues from CLP-induced septic mice. Knockdown of PHLDA1 could reduce lung injury and wet–dry weight ratio in mice with sepsis-induced ALI. Moreover, silencing of PHLDA1 decreased the expressions of IL-1β, TNF-α, IL-18, IL-6, and MDA but increased SOD and GSH expressions in CLP-induced septic mice. The expressions of NLRP3, GSDMD-N, ASC, and caspase 1 were decreased by PHLDA1 silencing. Conclusion: Knockdown of PHLDA1 inhibited lung inflammation and pyroptosis in mice with sepsis-induced ALI by down-regulating NLRP3.
Asociación entre calidad y cantidad de sueño con índice de masa corporal en adolescentes universitarios: Estudio transversal
Authors:   Universidad Autónoma de Tamaulipas México, del Ángel Pérez Beatriz , Lara Pérez Ricardo , Aguilera Pérez Paulina , Fang Huerta María de los Ángeles , Flores Barrios Florabel
Published: September 2023

Introducción: La modificación en los patrones de sueño incrementa la susceptibilidad para la ganancia de peso. Objetivo: Estimar la asociación entre la calidad y la cantidad de horas de sueño por noche con el Índice de Masa Corporal (IMC) en adolescentes universitarios mexicanos. Materiales y métodos: Estudio transversal en estudiantes de nuevo ingreso de Enfermería en una Universidad Pública de México. Muestreo por conveniencia de n=134 estudiantes (18–19 años), voluntarios y matriculados en la facultad. La calidad y cantidad de sueño se midió con el Índice de Calidad de Sueño de Pittsburgh. El IMC se calculó con la fórmula estándar. El protocolo fue aprobado por el Comité de Ética de la facultad, los participantes firmaron el Consentimiento Informado. Resultados: Edad promedio de 18,21 años (DE= ,42 años), 82,84% mujeres, 45,52% (IC 95%= 35,46 – 52,86%) con sobrepeso u obesidad. El 44,02% de los participantes reportó dormir ≤ 6 horas por noche, 50,00% refirió una mala calidad de sueño en las últimas cuatro semanas. Después de ajustar por edad, sexo y ocupación, la calidad del sueño no se asoció con el IMC (OR= 1,01; IC 95%= ,94 – 1,08; z= ,31; p= ,75); el incremento en el IMC se asoció con una mayor probabilidad de dormir 6 horas o menos (OR= 1,08; IC 95%= 1,01 – 1,16; z= 2,25; p= ,02). Discusión: Las alteraciones hormonales, los factores conductuales y el entorno pudieran explicar la asociación. Conclusiones: Es recomendable implementar estrategias educativas para mejorar la higiene del sueño en esta población.
Construção e validação de vídeo sobre o câncer de mama para surdas
Authors:   Universidade da Integração Internacional da Lusofonia Afro-Brasileira, Redenção, Brasil, Pereira Gomes Júlia Diana , Tomaz De Carvalho Aline ,   Unimed Fortaleza, Fortaleza, Brasil, Sousa Albuquerque Brandão Maria Girlane ,   Universidade de São Paulo, Brasil, Galindo Neto Nelson Miguel ,   Instituto Federal de Educação, Ciência e Tecnologia de Pernambuco, Recife, Brasil, Fortes Figueiredo Maria Do Livramento ,   Universidade Federal do Piauí, Teresina, Brasil., Mariano Grimaldi Monaliza Ribeiro ,   Universidade da Integração Internacional da Lusofonia Afro-Brasileira, Redenção, Brasil
Published: September 2023

Introdução: No mundo, um bilhão de pessoas tem algum tipo de deficiência, dentre elas a deficiência auditiva e mais de 190 milhões são mulheres surdas. É relevante tecnologias para educação inclusiva e acessível sobre o câncer de mama a surdas. Objetivo: Construir e validar vídeo educativo para mulheres surdas sobre prevenção e rastreamento do câncer de mama. Materiais e Método: Estudo metodológico com construção de vídeo educativo e validação por 11 especialistas de conteúdo e sete especialistas técnicos. Conteúdo fundamentado no Ministério da Saúde e no Instituto Nacional do Câncer. Na análise de conteúdo foi utilizado o Instrumento de Validação de Conteúdo Educativo em Saúde. A validade foi atestada pelo Índice de Validade de Conteúdo e o teste binomial. Resultados: O vídeo tem 17 minutos e 12 segundos. Na validação de conteúdo todos os itens tiveram concordância acima de 90,9% entre os participantes. O Índice de Validade de Conteúdo global foi superior a 0,90 entre os especialistas de conteúdo. Consideraram o material excelente, muito bom ou bom, 85,8% dos especialistas técnicos. Discussão: O vídeo contribui para o ensino e aprendizagem sobre o tema, ações de autocuidado e promoção da saúde às surdas. Conclusões: Vídeo construído com narração em LIBRAS, foi considerado válido quanto ao conteúdo e aspectos técnicos e poderá ser utilizado em futuras pesquisas e na educação em saúde de surdas.
Letalidade por Traumas Cranianos e Faciais no Brasil, entre 2000 e 2015
Authors: Picapedra Alicia , Frichembruder Karla , Sassi Carlos , Álvarez-Vaz Ramón , Hugo Fernando
Published: September 2023

O objetivo deste estudo foi estimar a incidência e a tendência temporal dos traumatismos de crânio e face, no Brasil, entre 2000 e 2015. Trata-se de um estudo epidemiológico retrospectivo baseado em dados secundários, obtidos no Sistema de Informações Hospitalares, do Sistema Único de Saúde, foi analisado o total das internações e óbitos, decorrentes das lesões e as dos traumatismos de crânio e face, no Brasil e suas cinco macrorregiões, nos 26 estados e Distrito Federal, mediante estatística descritiva multivariante, metodologia de clusters sobre análise de trajetória para dados longitudinais, usando o pacote kml do R. Observou-se que a taxa de internação global diminuiu ao logo dos anos, ao tempo que, a de mortalidade aumentou gradualmente, verificando-se em ambas uma variação em 2008. As relações homem: mulher de internações e óbitos por traumatismos de crânio e face foram de 4:1 e 6:1, respetivamente. O maior número de internações ocorreu na macrorregião Sudeste, 40,3 % (183.727). A faixa etária mais afetada foi de 20 a 29 anos. As fraturas de mandíbula representaram 33,5% das internações, seguidas pelas de malar e maxilar (26%) e pelas de ossos nasais (19,2%), porém as fraturas da abóbada foram as responsáveis pelo maior número de óbitos (37%). A taxa de letalidade diminuiu ao longo do período estudado para ambos os sexos em todas as macrorregiões, com exceção da Norte, onde houve um aumento. Espera-se que este estudo possa repercutir nos índices epidemiológicos e em ações de prevenção, de mortalidade por lesões e traumatismos de crânio e face.
The Effect of Obesity on Hemiarthroplasty and Total Hip Arthroplasty for Femoral Neck Fractures
Authors: DeGenova Daniel T. , Passias Braden J. , Paulini Alex S. , Myers Philip M. , Dues Boston , Taylor Benjamin C.
Published: September 2023

Obesity is a well-recognized global epidemic that can lead to longer operative times as well as a greater technical demand. Despite this, the available literature evaluating the impact of obesity on hip hemiarthroplasty (HA) and total hip arthroplasty (THA) when treating fractures about the femoral neck is scarce. Between 2015 and 2018, we retrospectively reviewed all patients that had a HA or THA performed as treatment for an isolated fracture of the femoral neck. Patients were classified as obese and nonobese depending on current body mass index (BMI) when the index procedure was performed. Preoperative and postoperative variable were obtained from the electronic medical record. A total of 157 patients underwent hip HA or THA for an isolated fracture of the femoral neck. In those patients undergoing HA, obesity was associated with an increase in operative times (P = 0.021) and was associated with a nonsignificant increase in total operating room time (P = 0.088) and duration of anesthesia (P = 0.14). In those patients undergoing THA, obesity was associated with longer operative times (P = 0.043), total operating room time (P = 0.032), and duration of anesthesia (P = 0.045). There were no significant differences in complication rates postoperatively between obese and non-obese patients undergoing either procedure. The treatment of isolated fractures of the femoral neck with HA or THA leads to an increase in operative time without an increase in postoperative complications in obese patients.
Using Concept Inventory for Assessing Conceptual Knowledge in the Signals and Systems Course
Authors:   Department of Electronics and Communication Engineering Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India, Kaur Rashpinder , Mantri Archana ,   Department of Electronics and Communication Engineering Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India, Nagabhushan Prathiba ,   Department of Psychology, St. Mary MacKillop College, ACT, Australia, Singh Gurjinder ,   Department of Electronics and Communication Engineering Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India
Published: September 2023

Abstract: The engineering schools usually target problem-solving skills in students instead of conceptual development, which is an essential skill for transformation from novice to professional engineer as per the program objective. Improving a student's conceptual knowledge can help students understand a problem better and develop a better solution. Conceptual understanding also assists students in identifying gaps in their problem-solving techniques. This paper attempts to administer a Signal and System Concept Inventory (SSCI) to test the conceptual knowledge of core concepts of signals and systems course and then identify the correlation of post-test scores with the student's performance in the end-term exam. The result shows that the students who scored above 80% in concept inventory also performed outstanding in the end-term examination. The result also indicates that most of the students able solve questions on background mathematics and polezero plots but struggled with convolution and Fourier analysis. Keywords: concept inventory, conceptual understanding, assessment, engineering education
Exploring the Effects of Game-based Learning
Authors:   Department of CSE, CIT Kokrajhar, BTR, Assam, 783370, Mondal Anowar Hussain , Maity Ranjan ,   Department of CSE, CIT Kokrajhar, BTR, Assam, 783370
Published: September 2023

Abstract :Advancements in technologies are helping the education system to improve and explore a new dimension of learning. Learning beyond class hours is an important issue. Traditional textbooks and learning materials (online as well as offline) may help to overcome this challenge for theory-based papers. On contrary, experimenting in a lab beyond the class hour is challenging, more specifically in schools. The effect of the COVID pandemic also forced the researchers to explore new ways of learning, particularly in lab work. In this work, an interactive virtual Lab was developed for school students. They can virtually perform Ohm's Law experiments using a mobile phone or computer. The proposed lab was designed using Unity Engine with C#. In order to check the acceptance of the proposed applications, we conducted a usability evaluation. It was observed that students learned more effectively using our proposed application. Keywords : Simulation, 3D Model, Virtual Reality, Usability Testing.
Complementary Effect of Curricula Modifications, OBE and Students' Performance in College of Engineering, King Saud University – Case Study
Authors:   Department of Civil Engineering, College of Engineering, King Saud University, Riyadh-11421, Saudi Arabia, Alsabhan Abdullah H.
Published: September 2023

Abstract :Engineering education require timely changes in curriculum in order to keep its relevance with technology upgradation. The outcome-based education (OBE) has become a preferred vehicle of education reform through curriculum upgradation. In the College of Engineering King Saud University three reform regimes have been undertaken. Plan A was from 1990-2002, Plan B was from 2003-2007 and Plan C from 2008-2018. Curriculum plans B and C were considered ABET accreditation requirements in their constitutes. The consistent increase in number of students earning GPA from 4.5 to 5 was 2%, 7% and 33% during Plan A, B and C. The increase in mean average GPA of plan B registered 10% increase in comparison of plan A bench mark. However, the mean average GPA of plan C registered significant increase of 34%. The percentages of honordegree holders in each successive curriculum plan A, B and C exhibited increase of 0.9%, 2.1% and 16% respectively. The average number of years taken by the students to complete the graduate program decreased from 6 years to 5.5 years and to 5 years under plan A, B and C respectively. All above parameters exhibited fulfilment of OBE criteria and justifies the modifications in plans of curriculum. Keywords : Curriculum; OBE; ABET; Assessment
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.
Comparison of Apically Extruded Debris During Root Canal Instrumentation Using T-endo must, T-endo mis, and Reciproc Blue Files
Authors: FUNDAOĞLU KÜÇÜKEKENCİ Funda
Published: September 2023

OBJECTIVE: The aim of this study was to compare the effect of nickel-titanium file systems with different taper angles working with rotation and reciprocation motion on the amount of debris extruding apically.
MATERIALS AND METHOD: The study was performed using the Myers and Montgomery model. Forty-five human maxillary anterior teeth were inserted into preweighed Eppendorf tubes and randomly classified into three groups. After manual glide-path preparation, the teeth in each group were instrumented to the working length set 1 mm short of the anatomical apex using the standard sequence provided by the manufacturers: Group 1: Reciproc Blue (Easy In Smile, New Jersey, USA), Group 2: T-endo must (Dentac, İstanbul, Turkey),Group 3: T-endo mis (Dentac, İstanbul, Turkey). Root canals were irrigated with 10 mL 2.5% NaOCl, 17% EDTA, and distilled water between each file insertion. The tubes with collected debris were stored in an incubator at 70°C for 7 days. Measurement of the weight of extruded debris was performed by subtracting the pre-instrumentation from the post-instrumentation weight of the tubes. Data were analyzed using one-way ANOVA and Tukey’s Honest Significant Difference Test (α=0.05).
RESULTS: The weights of the apically extruded debris were 0.0094±0.0015 g in Group 1, 0.0075±0.0012 g in Group 2, and 0.0044±0.0010 g in Group 3, and the difference between all groups was statistically significant (p<0.05).
CONCLUSION: The amount of apically extruded debris is related to the taper angle of the file used and the kinematics of the file.
Using MultiQuant and Excel software to evaluate and report multi-analyte targeted LC-MS/MS data v1
Authors: ZM Homer Natalie
Published: September 2023

This protocol describes how to evaluate and report targeted LC-MS/MS data that has been collected in Analyst software on AB Sciex mass spectrometers. It describes using a Processing Method built in MultiQuant to evaluate a targeted analysis data file (*.wiff) acquired in Analyst software. The LC-MS/MS data file must contain a calibration curve and unknowns analysed as a batch using the same Acquisition method in Analyst. The results from MultiQuant are then transferred to Microsoft Excel to filter and summarise the calculated amounts of the analytes of interest in the samples as a final result.
SARS-CoV-2 Whole Genome Amplicon Sequencing from Liquid Wastewater v1
Authors: Chan-Herur Vikram
Published: September 2023

This process instruction describes steps for whole genome amplicon sequencing of SARS-CoV-2 from wastewater, including concentration and RNA extraction steps, purification steps, reverse transcription and PCR with ARTIC primers, library construction, and Illumina sequencing. Sequencing data produced using this protocol may be used for a variety of analyses including estimation of variant and mutation abundance. The read lengths are sufficient for read merging and analysis of intact amplicons. This protocol has been used for sequencing activities as part of the WastewaterSCAN program.