bluuebunny/crossref_metadata_2025 huggingface dataset:
INNOVATIVE DEVICE TO VERIFY AND/OR CALIBRATE LUXMETERS (LIGHT METERS)
Authors: Quiroga M. , Quiroga M.
Published: January 2024

Calibration methods for illuminance meters have been positioned in the market for decades without any significant changes. However, recently the International Commission on Illumination issued a publication regarding the “CIE 251: 2023. LED Reference Spectrum for Photometer Calibration”. This will denote significant changes in the current calibration method. Several of these changes are presented in this article, where an illuminance meter verification and/or calibration device demonstrates this technological shift. Due to its recent development and pending patent approval, it enables faster, automated calibration or verification of lux meters with a wide measurement coverage range.
REFLECTED GLARE ON MUSEUM EXHIBITS WITH DISPLAY CASES: AN EXAMINATION OF A GLARE PREDICTION METHOD BASED ON LUMINANCE DISTRIBUTION
Authors: Sagawa M. , Maeda A. , Takashima M. , Oe Y. , Yoshizawa N. , Mizokami Y.
Published: January 2024

The ultimate purpose of this study is to elucidate the occurrence conditions of reflected glare and to utilize this knowledge for museum lighting. In this study, subjects evaluated the reflected glare on replica paintings in an experimental room and the occurrence mechanism of reflected glare under conditions with and without acrylic display cases were compared. We examined whether the degree of glare could be predicted from three physical quantities–luminance contrast, reflectance, and glossiness of the painting surface–under the two conditions. It was found out that predicting the reflected glare from these physical quantities under a display case was difficult, and the prediction method with or without the display case should be reconsidered, because the spread of high-luminance areas that cause glare was different in the two conditions.
A DEVELOPMENT OF MICRO-PRISM ARRAYS ACHIEVING IMAGE PROJECTION BY PRINCIPLE OF LIGHTING: OPTICAL DESIGN AND NUMERICAL ESTIMATION OF LIGHTING PERFORMANCE
Authors: Shichi W. , Nakano M. , Toyota T.
Published: January 2024

A unique lighting system capable of projecting a pictogram image was designed using a micro-prism array (MPA) comprising 0,08 mm square prism cells. The quality of the pictogram image projected by the lighting system with the MPA was evaluated using a computer simulation. The evaluation clarified the number of prism cells necessary to achieve the required illuminance uniformity of the projected pictogram image, the dependence of the blur width of the projected image at a distance from the light source to the MPA, and the effect of the diffracted light of the prism cells on the projected image. By addressing these key aspects, we can make the design of a pictogram image projection lighting system with the MPA more efficient.
FUNDAMENTAL STUDY OF METHODS FOR PREDICTION OF THE BRIGHTNESS OF VISUAL OBJECT BY USING THE STANDARD DEVIATION OF LUMINANCE LOGARITHM
Authors: Suzuki N. , Maruyama H. , Kozaki M. , Hirate K. , Ma Y.
Published: January 2024

The aim of this study is to propose an easily predicted method of brightness of the visual object using a standard deviation of the luminance logarithm.
Two experiments were conducted; the fundamental experiment is to verify the possibility of the brightness of the visual object using the standard deviation of luminance logarithm and the second experiment is to verify the adaptability in real space.
The two experiments showed the possibility of an easy prediction of the brightness of the visual object by the luminance logarithm multiplied by the Napier number to the power of the standard deviation of the luminance logarithm. The brightness of the visual object was calculated for each pixel of the luminance image and the brightness of the space was predicted from the average value. It was shown that glare could also be predicted in the same way using that index.
STUDY OF EXPOSURE CONDITION WITH RELATION TO COLOR CHANGE OF PHOTOCHROMIC SUBSTRATES
Authors: Viková M. , Vik M.
Published: January 2024

Chromic materials, frequently called as color-changeable materials, became more important in many applications. For example, photochromic colorants are used as in adaptive sunglasses, rewritable CD and its alternatives, indicators, etc. Photochromic dye reversible changes their color with the incoming light intensity or spectral distribution of the light. They are nearly invisible when they are not exposed to UV light; exposure to UV light causes fast transition and increasing of color depth. Because photochromic materials are based on generally unstable organic molecules, one of important characteristics relating to optical properties of such kind of materials is relating to kinetic of color change itself. Obvious in literature mentioned description of experimental method used during test of optical properties of photochromic materials is reduced on used conventional UV-VIS spectrophotometer, wavelength and power of exposure light source that is necessary to ad as accessory. Necessary information about irradiance of tested sample is obviously missing, which cause problems with comparison of data measured on different laboratories. Problem with the measurement of the kinetic behavior of opaque photochromic substrates with a commercial spectrophotometer is the relatively long period of time between individual measurements (cca 5 s) and the difficulty in measuring all the color change during exposure without interruption from illumination of the sample during measurement. That means commercial spectrophotometers enable off-line measurement of kinetic behavior during exposure period and quasi on-line measurement during the reversion period. The difference in the time delay between exposure and real measurement of photochromic change affects the validity of the measured data. Based on that it was decided to check influence of used temperature, irradiance, and setup of testing cycle on obtained results in case of color depth measured as K/S value, color change half-life and possible fading effect.
AIRBORNE LUMINANCEMETER FOR OBTRUSIVE LIGHT MEASUREMENTS
Authors: Chasseigne R. , García-Márquez J. , Pierrard S. , Betis P. , Dubard J. , Hay B. , Renoux D.
Published: January 2024

An airborne imaging luminance-colorimeter is designed for aerial surveillance of specific geographic areas, typically 1000 km², at night-time. In addition to the measurement of the luminance [cd∙m-2], the instrument shall estimate colour temperatures, with 3000 K defined as the higher limit by the 2018’s French ministerial decree. The testing bench allows the luminance-colorimeter to be calibrated before the first operational flight. The bench presented here allows calibration in luminance, colour parameters, linearity, signal-to-noise ratio, geometrical distortion and vignetting. The instrument exhibits good spectral mismatch regarding the X1, X2, Y, and Z responses.
TIME-SEQUENTIAL RGB IMAGING WITH A MULTISPECTRAL ILLUMINATION SOURCE AND A GATED CMOS CAMERA
Authors: Coosemans J. , Iranian P. , Kuijk M. , Jacobs V. , Ingelberts H.
Published: January 2024

Fluorescence lifetime imaging (FLIM) guided surgery has gained significant interest following developments in high-speed cameras, allowing the measurement of short lifetimes. FLIM provides precise tumour localisation by employing fluorescent biomarkers, particularly those emitting in the near-infrared (NIR) spectrum. While FLIM proves valuable in surgical procedures, it is crucial to also incorporate accurate colour imaging. This enables the visualisation of tissue in natural colours, enhanced by an overlay of fluorescence data, improving surgical effectiveness. However, integrating a separate RGB camera with the FLIM camera poses challenges such as parallax issues and potential reduction in resolution, especially when using Bayer-type filters. To overcome this, we propose an approach that generates colour images with a monochromatic time-gated FLIM camera and a custom- designed pulsed RGB illumination source. The presented setup can also be extended to the NIR range, enabling NIR-FLIM and combining colour imaging with FLIM to further enhance the quality of FLIM-guided surgery.
METHOD FOR TRACEABILITY OF MULTISCALE BIDIRECTIONAL REFLECTANCE DISTRIBUTION FUNCTION MEASUREMENTS
Authors: Gevaux L. , Morvan K. , Saha D. , Frisvad J. , Obein G. , Dupiau A.
Published: January 2024

The traceability of instruments measuring reflectance on very small areas (submillimetric scale) cannot be established using conventional diffuse reflectance standards, because their measurement at very small scales is impacted by translucency and surface roughness. To establish the traceability of the bidirectional reflectance distribution function (BRDF) from the micrometric scale to the centimetric scale, we created samples that have invariant reflectance properties at multiple scales. The samples are flat and matte with a regular grid of dots that are small relative to the beam multiscale size and that present a structure that limits issues linked to translucency.
VISUAL COLOUR-DIFFERENCE ASSESSMENT OF 3D PRINTED SAMPLES
Authors: He R. , Xiao K. , Bressler Y. , Pointer M. , Melgosa M.
Published: January 2024

With the rapid development of colour 3D printing technologies, colour-difference evaluation of 3D printed objects requires further studies to achieve faithful colour reproduction in 3D printing. The aim of this study is to collect visual colour-difference data of 3D printed objects in static and rotating conditions. The X-Rite virtual light booth with a rotating stage was used to conduct psychophysical experiments for 82 pairs of 3D printed samples with the grey-scale method. Five human observers with normal colour vision participated in the visual colour-difference assessments, and the collected experimental data were compared with the measurement data. The results showed that the perceptual colour differences of 3D samples in two conditions were similar, but the visual data of rotating samples have a poorer relationship (STRESS=39.38) with the measurement data, compared to the results of the static samples (STRESS=36.62). By using the optimised CIELAB colour-difference formulae in the previous study, the STRESS values decreased by 7 units.
SPARKLE AND GRAININESS INDEX MEASUREMENT OF METALLIC COATINGS WITH MATTING AGENT
Authors: Osumi M.
Published: January 2024

Sparkle and graininess measurement problems of metallic coated panel with matte coating were verified. Metallic Coating Panel combining aluminium flake and matting agents were prepared and observed by Several types of Microscopes. The three-dimensional microstructure was measured using a digital optical microscope and a laser confocal microscope for surface observation, and also high Magnificat observation by SEM. Using a portable gonio-spectrophotometer BYK mac I capable of measuring multi-angle reflectance, Sparkle and Graininess Index. And a surface property such as gloss, image clarity was measured by surface analyser, and clarified the relationship between the light diffusion effect of the matting agent. Spectroscopic imaging measurements were performed with 3-angle directional illumination. Among them, the diffusion effect of illumination light at 75 degrees illumination was characteristic. Spectroscopic imaging measurements were performed with three types of integrating sphere illumination. Among them, SCI was significantly affected by matting agents.
EVALUATION THE COLOUR HARMONY OF ARTIFICIAL LIGHT AT NIGHT IN URBAN COMMERCIAL DISTRICT UTILIZING HYPERSPECTRAL IMAGING
Authors: Chen S. , Lin Y. , Zhang B. , Zeng X. , Liu J. , Yao Q.
Published: January 2024

ALAN (artificial light at night) has changed the spectral composition of the night sky, disrupting the rhythms of natural ecosystems. In particular, the multicolour and high brightness of the nightscapes make the urban night present a chaotic and colourful scene. We therefore introduce the colour harmony theory for evaluating multiccolour lighting scenes. In this study, we collected hyperspectral data from 50 lighting scenarios in seven commercial districts in Shanghai. Utilizing the acquired hyperspectral data, we analyzed the luminance, chromaticity distribution, and colour harmony values of these districts. It was observed that modern architectural commercial districts (such as Lujiazui) exhibited a greater variety of colours compared to historical architectural districts (such as the Bund International Architecture Exhibition). This disparity can be attributed to the utilization of self-illuminating lighting methods in modern architecture, allowing for a broader range of colours, higher luminance levels, and increased colour harmony values. In contrast, historical buildings typically rely on floodlights for illumination, resulting in fewer colour options, lower luminance levels, and diminished colour harmony values.
Um mapeamento sobre Estágio Supervisionado em Ciências Biológicas: panorama científico-brasileiro
Authors: Martins Ismênia Gurgel , Leite Raquel Crosara Maia
Published: January 2024

Esta pesquisa teve como objetivo realizar um estudo de Revisão Sistemática de Literatura sobre Estágio Curricular Supervisionado em Licenciatura em Ciências Biológicas de modo a revelar como a temática vem sendo abordada na área de Ensino de Ciências. Para tanto, apresentamos os resultados de uma pesquisa qualitativa que contemplou 102 artigos publicados no Portal de Periódicos da CAPES nos últimos dez anos. Dentre eles, a Revista Investigación y Experiencias Didácticas se destaca com maior número de publicações, cujas temáticas mais enfatizadas foram “formação docente”, “intervenção pedagógica” e “concepções”, tendo como foco de investigação licenciandos, educadores e documentos. Não foram encontrados trabalhos realizados nos estados do Acre, Sergipe, Mato Grosso e Espírito Santo. A UFPR, no Paraná, foi a instituição com mais publicações. Com isso, concluímos que há necessidade de ampliar as pesquisas envolvendo o papel formativo dos professores do ensino superior já que o estágio foi investigado em diferentes perspectivas educacionais.
PENGEMBANGAN E-MODUL INTERAKTIF BERBASIS CANVA PADA MATA KULIAH PSIKOLOGI BELAJAR UNTUK MENINGKATKAN HASIL BELAJAR MAHASISWA
Authors: Manik Asta Jaya Ketut , Yudista Witraguna Kadek , Tri Wahyuni Ni Nyoman
Published: January 2024

Penelitian ini bertujuan mengembangkan e-modul interaktif dalam proses pembelajaran, terutama untuk meningkatkan hasil belajar pada mata kuliah Psikologi Belajar pada Program Studi Pendidikan Guru Sekolah Dasar (PGSD), Universitas Hindu Negeri I Gusti Bagus Sugriwa Denpasar. Penelitian ini merupakan penelitian Research and Development (R&D) dengan tahapan ADDIE. Hasil penelitian ini menunjukan e-modul interaktif layak untuk diterapkan, hal ini diketahui dari Hasil validasi ahli materi menyatakan e-modul interaktif layak dengan rata-rata persentase 77,5%. Validasi oleh ahli desain pembelajaran menyatakan e-modul interaktif termasuk dalam katagori layak dengan rata-rata presentase 78 %. Terakhir validasi oleh ahli media menyatakan media pembelajaran ini dalam katagori layak dengan presentase 80%. Sementara itu hasil uji coba menunjukan e-modul interaktif dalam dikatagorikan “praktis” dengan skor . Dari hasil prestest dan postest diperoleh peningkatan yang cukup efektif yaitu dengen N-Gain Skor 65%. Hasil evaluasi dari penggunaan e-modul interaktif ini pun menjadi sebuah bukti peningkatan hasil belajar mahasiswa.
PRINSIP MODERAT DALAM PENJAMINAN MUTU PERGURUAN TINGGI KEAGAMAAN ISLAM SWASTA (PTKIS) (Studi PTKIS di Provinsi Lampung)
Authors: Ahmad Fauzan  , Pane Erina , S Kartika
Published: January 2024

Perguruan Tinggi Keagamaan Islam Swasta (PTKIS) kian tumbuh dan berkembang. Termasuk di Provinsi Lampung yang didukung oleh keberadaan Kopertais Wilayah XV Lampung sejak 2020. Penelitian lapangan yang dideskripsikan ini bertujuan untuk menggali sikap moderat dalam penjaminan mutu pada PTKIS. Objek dalam penelitian ini adalah keterwakilan dari jenis Perguruan Tinggi, yakni Institut Agama Islam (IAI), Sekolah Tinggi Agama Islam (STAI), Sekolah Tinggi Ilmu Tarbiyah (STIT), Sekolah Tinggi Ekonmi dan Bisnis Islam (STEBI), Sekolah Tinggi Ilmu Syari’ah (STIS). Hasil penelitian menunjukkan bahwa sikap moderat sangat diperlukan pada implementasi sistem penjaminan mutu. Hal ini menjadi penting karena hasil dari sistem penjaminan mutu, baik SPMI maupun SPME akan menjadi tolak ukur tata kelola PTKIS yang berdampak pada keberlangsungan seluruh kegiatan PTKIS. Dengan demikian, PTKIS harus mengedepankan sikap moderat, seperti
Supervisi, Penjaminan Mutu, dan Manajemen Kelas Yang Kondusif Untuk Kesuksesan Kualitas Pembelajaran
Authors: Raharja Reza Mauldy , Asrul Asrul , Imron Ali , Sunarni Sunarni
Published: January 2024

Fokus pembahasan dalam tulisan ini adalah konsep supervisi pengelolaan kelas dan penjaminan mutu. Pengawasan adalah tindakan yang dilakukan oleh pimpinan di sekolah yang menekankan kegiatan pembinaan dan pengembangan terhadap orang yang diawasi. Mutu pendidikan pada umumnya dimulai dari mutu pendidik dan pelaksanaan pendidikan di kelas. Pelaksanaan pendidikan dalam prakteknya terjadi di dalam kelas dimana kelas merupakan unsur terkecil dalam pelaksanaan pendidikan dan pembelajaran di lembaga pendidikan. Guru merupakan ujung tombak pelaksanaan proses pendidikan di kelas, juga berperan sebagai pendidik profesional dan memiliki tugas yang sangat kompleks, tidak terbatas pada kegiatan pembelajaran, antara lain sebagai administrator, evaluator, konselor, dan sebagainya. Guru dalam melaksanakan tugasnya sehari-hari memiliki peran yang sangat besar. Komitmen dan profesionalisme mereka sangat diharapkan dalam upaya menjamin mutu pendidikan. Kegiatan pengelolaan kelas juga merupakan kegiatan yang tidak bisa dipandang sebelah mata diantara sekian banyak tugas guru, keterampilan guru dalam mengelola kelas merupakan nilai tambah yang harus dimiliki oleh guru profesional karena sebagai unsur vital dalam penyelenggaraan pendidikan sudah selayaknya kelas dikelola dan dikelola agar berkualitas dengan bantuan kepala sekolah. sebagai pengawas di sekolah. Oleh karena itu, seorang kepala sekolah perlu membimbing, membina, dan mengarahkan guru dan stafnya dengan baik.

Kata Kunci : Pengawasan, Penjaminan Mutu, Pengelolaan Kelas
PERAN ORANG TUA DALAM MENINGKATKAN PRESTASI AKADEMIK ANAK: STUDI KUALITATIF TENTANG POLA ASUH DAN PEMBINAAN KELUARGA
Authors: Prasetyo Teguh , Alya Nurma , Rahmatillah Fikhi
Published: January 2024

This study aims to investigate the role of parents in improving children's academic achievement in Cimande Village. The family, as the smallest unit in society, has a significant responsibility in fostering a positive lifestyle for children, including resilience, strong personality traits, and a sense of responsibility. A qualitative approach was employed, utilizing interviews with parents of elementary school-level children in Cimande Village. Purposive sampling was used to select research participants, considering variations in parenting styles and family development. Thematic analysis was applied to analyze the collected data and identify emerging themes and patterns related to the role of parents in enhancing children's academic achievement. The findings indicate three key themes: the influence of good parenting practices and guidance on students' academic performance, the impact of parental attention to children's learning difficulties on their academic achievement, and the positive effect of active parental involvement in supporting their children's learning process. In conclusion, the research highlights the critical role of parents in enhancing children's academic achievement and their overall learning process. The family serves as an initial platform for laying the foundation and potential for children to comprehend essential concepts. The motivation and enthusiasm provided by parents have a positive impact on children's learning outcomes and foster their dedication to the learning process.
THE IMPACT OF TECHNOLOGICAL PEDAGOGICAL CONTENT KNOWLEDGE (TPACK) ON LEARNING OUTCOMES: A BIBLIOMETRIC REVIEW
Authors: Simangunsong Marta Florentina , Waspada Ikaputera , - Rasto , Muhammad Ilham
Published: January 2024

This study aims to analyze the research landscape regarding Technological Pedagogical Content Knowledge (TPACK) which is related to learning outcomes, using the bibliometric analysis method. The data used comes from the Scopus database. After going through the four stages of the process (identification, screening, eligibility, and inclusion), 41 relevant data were obtained. The results showed that the most publications related to TPACK and learning outcomes occurred in 2022 with a total of 6 publications. Meanwhile, the most cited publication occurred in 2017 with 267 citations. The United States has had a major influence on TPACK research and study outcomes. The research focus is divided into three main parts, namely 1) engineering and curriculum; 2) teaching and student; and 3) technology integration. Several new themes in this field include self-regulation, children learning, self-assessment, teaching strategies, learning activities and educational computing. However, the TPACK keywords which were the most dominant in the three research focuses were not directly connected with the three new theme keywords, namely self-regulation, children learning, and teaching strategies. By understanding the trends and research focus related to TPACK and learning outcomes, researchers and education practitioners can obtain useful guidance for developing innovative and effective teaching strategies, as well as designing curricula that match students' learning needs.

 

Keywords: bibliometric, learning outcomes, TPACK
ANALISIS PENINGKATAN SECURITY CULTURE TERHADAP KEAMANAN PENERBANGAN DI BANDAR UDARA INTERNASIONAL SULTAN HASANUDDIN MAKASSAR
Authors: OCTAVIANIE ADHITYA , SANJAYA RD , WIWIK BERNADETTA , NUR MULYADI
Published: January 2024

Bandara Sultan Hasanuddin merupakan salah satu bandara yang dikelola secara komersial oleh PT. Angkasa Pura I. Ke depan, bandara ini akan terus dikembangkan hingga tahap ultimate. Penelitian ini bertujuan untuk menganalisis hubungan aspek budaya keamanan dengan upaya menjaga dan meningkatkan keamanan penerbangan di Bandara Internasional Sultan Hasanuddin Makassar.

Pengumpulan data dalam penelitian ini dilakukan dengan cara observasi, wawancara, dan penyebaran kuisioner. Ada 8 (delapan) aspek yang perlu diperhatikan untuk melihat penerapan budaya keamanan di suatu bandar udara. Penelitian yang dilakukan di Bandara Sultan Hasanuddin Makassar melihat penerapan budaya keselamatan melalui 8 (delapan) aspek tersebut.

Berdasarkan 8 (delapan) aspek yang dinilai, secara umum hasilnya sangat baik. Hasil ini tentunya merupakan hal yang positif karena hasil tersebut merupakan cerminan dari penerapan budaya keamanan atau security culture di Bandara Internasional Sultan Hasanuddin Makassar.
Impactos da insegurança alimentar e nutricional no desenvolvimento infantil
Authors: Cristovam Beatriz Silva , Duarte Ester Marcondes , Nogueira Georgia Rodrigues , Oliveira Narcisio Rios
Published: January 2024

Objetivo: Contribuir com reflexões a respeito do impacto da insegurança alimentar e nutricional (IAN) no desenvolvimento infantil. Revisão bibliográfica:  A desnutrição infantil compromete as defesas imunológicas do corpo e eleva a probabilidade de infecções, podendo em situações extremas levar ao óbito precoce, sendo a nona causa mais comum de mortalidade infantil no Brasil. Aproximadamente 40 milhões de crianças com menos de 5 anos de idade na América Latina e no Caribe possuem excesso de peso, sendo a obesidade infantil e doenças associadas consideradas de risco para problemas na fase adulta. A fome representa uma das expressões da insegurança alimentar e nutricional, sendo a fome oculta considerada um sério problema nutricional, possuindo altas taxas de prevalência no mundo e caracterizada pela carência nutricional não explícita de um ou mais micronutriente, podendo ser expressa pela falta permanente de alimentos e/ou nutrientes. Considerações finais: Dessa forma, pode-se considera que diante dos impactos da desnutrição, obesidade e fome oculta, ocasionados pela IAN no desenvolvimento infantil, ações urgentes e concretas se fazem necessárias, para promoção da qualidade de vida e nutrição de crianças, impactando também na vida de seus familiares.
Doença do refluxo gastroesofágico
Authors: Alacrino Filho Jonh Eisenhoer Batista , Pereira Ana Carolina de Alvarez , Carvalho Ana Clara Vanini de , Medina André Bastos , Peixoto Felipe Guedes , Figueira Fernando Fernandes , Silva Guilherme Curvelo Bernardes , Neves João Pedro Carvalho , Vale Ytalo Goulart de Souza , Ferraz Adriana Rodrigues
Published: January 2024

Objetivo: Descrever as características da doença do refluxo gastroesofágico (DRGE), a fim de diagnosticar e tratar os pacientes portadores dessa enfermidade. Revisão bibliográfica: A DRGE é definida como o refluxo anormal do conteúdo gástrico para o esôfago, causando lesão da mucosa esofágica e/ou sintomas de refluxo. A sintomatologia é bastante variável, subdividida em sintomas típicos e atípicos, mas destacam-se clinicamente os sintomas típicos de pirose e regurgitação. Em relação à fisiopatologia, a DRGE é caracterizada por ser uma doença multifatorial e associada à diversos fatores de risco. A complicação mais importante é o esôfago de Barrett. Considerações finais: A DRGE constitui a principal enfermidade presente nos ambulatórios de gastroenterologia. É diagnosticada através de manifestações clínicas, no entanto, alguns exames também podem auxiliar no diagnóstico: endoscopia digestiva alta (EDA), pH esofágico de 24 horas e impedância da mucosa esofágica. Por se tratar de uma doença multifatorial, seu manejo está voltado para modificações nos hábitos de vida, tratamento farmacológico e, em alguns casos, intervenções mais invasivas. Com isso, é de suma importância o conhecimento acerca da DRGE para que o profissional, ao se deparar com a doença, realize o correto manejo, evitando complicações e piores desfechos.
Prevalência de infecções sexualmente transmissíveis em adolescentes e os fatores de risco
Authors: Corrêa Mayra Loreanne Nascimento , Santos Matheus Lopes dos , Corrêa Aldalice Tocantins , Santana Pablo Palmerim , Alves Maria Eduarda dos Santos , Calandrini Tatiana do Socorro Santos , Nemer Camila Rodrigues Barbosa , Mata Nely Dayse Santos da
Published: January 2024

Objetivo: Identificar as evidências científicas sobre as infecções sexualmente transmissíveis e suas repercussões para a saúde sexual dos adolescentes. Métodos: Trata-se de revisão integrativa realizada entre os meses de janeiro a abril de 2023, mediante consulta às bases eletrônicas de dados: MEDLINE/PUBMED, SCOPUS, LILACS, IBECS, BDENF via Biblioteca Virtual em Saúde (BVS). Os descritores e as palavras-chaves utilizadas para a busca foram consultados nos Descritores em Ciências da Saúde (DeCS), Medical Subject Headings (MeSH). Para análise e síntese dos resultados, utilizou-se o software on-line de revisão Rayyan. Resultados: Foram identificados no total 36.096 estudos e, após a aplicação dos filtros restaram 4.753 para a leitura dos títulos e resumos, sendo selecionados 82 artigos para a leitura na íntegra. Após aplicação dos critérios de inclusão e exclusão, 36 artigos foram incluídos na amostra: 10 na BVS, 14 na PUBMED e 11 na SCOPUS. Considerações finais: Observa-se que a falta de conhecimento dos adolescentes sobre as IST é o principal fator que contribui para a sua disseminação. Além disso, esse fator também se relaciona com os comportamentos de risco adotados por esse público.
Emerging contaminants at trace levels of pesticides perturbs biomolecules in different organs in mice: Role of peroxisome proliferator-activated receptor-alpha
Authors: Gonnabathula Pavani K. , Yakubu Momoh Audu
Published: January 2024

Objectives:

Information is lacking on the consequences of chronic exposure to emerging contaminants at environmentally relevant (trace concentrations) on biomolecules. Environmental exposure to these chemical mixtures happens at trace concentrations and at multiple molecular interactions. The consequences of trace concentrations of multiple pesticides (MPs) on the regulation of selected biomolecules nitric oxide (NO), thiols, superoxide dismutase (SOD), and glutathione S-transferase (GST) in the tissues from wild type (WT) and genetically deficient- peroxisome proliferator-activated receptor-alpha (PPARα) knockout (Null) mice were investigated.

Material and Methods:

Mice were exposed to trace concentrations of MPs: Atrazine, dieldrin, endrin, endosulfan, and anthracene (1–100 ng/L) in drinking water for 6 weeks. Organs were collected and homogenized; NO, protein and non-protein thiol levels, as well as SOD and GST activities were determined.

Results:

Differential and organ selective effects of the treatments were observed in the WT and PPARα knockout. Increased NO levels were observed in the organs from WT with limited increase in the kidney (Null). SOD activity was decreased in the organs from the WT and was increased in the PPARα knockout when compared to the control. Thiol level was significantly increased in the heart and spleen in the WT and in the heart of the PPARα knockout mice when compared to the control. Non-protein thiol concentration was reduced in the heart and kidney (WT) and reduced in the liver of the PPARα knockout when compared to the control. GST activity was significantly decreased in the liver and spleen (WT) and was significantly elevated in all organs in the PPARα knockout mice when compared to the WT.

Conclusion:

The low concentrations of MPs may have caused selective dysregulation of biomolecules in different organs of the body. These effects observed may be influenced by genetic status such as in PPARα deficiency. These results present a scenario that implicates nanoconcentrations of series of organic contaminants that can cause cellular and molecular dysregulations of biomolecules precipitating toxicity and pathology that can be a threat to human health. Further, investigation into the molecular mechanism(s) and signaling pathway(s) implicated in these dysregulations is warranted.
EVALUATION OF THE USE OF ALKALI CATALYSTS FOR BIODIESEL PRODUCTION
Authors: Сафонов А.О.
Published: January 2024

Переработка сырья растительного или животного происхождения в биодизельное топливо в присутствии щелочных катализаторов распространена в промышленном производстве. Щелочные соединения могут преобразовывать триглицериды в метиловые эфиры жирных кислот с высокой конверсией. Однако имеются проблемы отделения катализаторов от полученных продуктов. Растительные масла и животные жиры содержат свободные жирные кислоты и воду. Эти составляющие отрицательно влияют на переэтерификацию глицеридов спиртами и затрудняют разделение полученных метиловых эфиров жирных кислот и глицерина вследствие омыления свободных жирных кислот. Поэтому твердый щелочной катализатор из-за его легкого отделения от продукта по окончании является предпочтительнее щелочных растворов. Гетерогенный щелочной катализ менее изучен, чем гетерогенный кислотный. В последнее время много работ посвящено исследованиям переэтерификации с использованием щелочных катализаторов для производства биодизельного топлива. При этом характеристики обычных гетерогенных катализаторов недостаточно высоки и требуют улучшения. В настоящей работе исследовано несколько видов перспективных каталитических соединения для повышения эффективности проведения реакции переэтерификации. Использовались гетерогенные щелочные катализаторы на базе гидроталькитов, оксиды и соли некоторых металлов, а также нанесенные на подложку щелочные катализаторы и кремнеземы в виде цеолитов.

Processing of raw materials of plant or animal origin into biodiesel fuel in the presence of alkaline catalysts is common in industrial production. Alkaline compounds can convert triglycerides into fatty acid methyl esters with high conversion. However, there are problems in separating the catalysts from the resulting products. Vegetable oils and animal fats contain free fatty acids and water. These components negatively affect the transesterification of glycerides with alcohols and complicate the separation of the resulting methyl esters of fatty acids and glycerol due to saponification of free fatty acids. Therefore, a solid alkali catalyst, due to its easy separation from the product upon completion, is preferable to alkaline solutions. Heterogeneous alkaline catalysis is less studied than heterogeneous acid catalysis. Recently, many works have been devoted to the study of transesterification using alkali catalysts for the production of biodiesel. At the same time, the characteristics of conventional heterogeneous catalysts are not high enough and require improvement. In this work, several types of promising catalytic compounds were studied to increase the efficiency of the transesterification reaction. Heterogeneous alkaline catalysts based on hydrotalcites, oxides and salts of some metals, as well as supported alkaline catalysts and silicas in the form of zeolites were used.
ASSESSMENT OF THE IMPACT OF THE USE OF SOLUTIONS WITH DIFFERENT PH TO PREVENT RADIATION CONTAMINATION BY ASH AND SLAG WASTE FROM COAL THERMAL POWER PLANTS
Authors: Заверткин Е.А. , Анфилов К.Л.
Published: January 2024

В настоящее время около 18% от всех теплоэлектростанций в России работает на угольном топливе. Результатом их деятельности становится образование золошлаковых отходов, которые помимо загрязнения атмосферы, как мелкодисперсная частица, в составе которой содержаться соединения тяжёлых металлов, способны стать в качестве источника радиационного заражения в местах золоотвалов. В работе был применён метод, выщелачивания растворами с различными pH. Актуальное исследование демонстрирует способность кислотных растворов лучше остальных снижать радиоактивность отходов энергетического комплекса. Показано, что обработка золошлаков кислыми реагентами позволит снизить излучение бета-частиц в месте их скопления. Заражённые стоки, подвергаются вторичной обработке, для выделения полезных материалов.

Currently, about 18% of all thermal power plants in Russia are powered by coal fuel. The result of their activity is the formation of ash and slag waste, which, in addition to atmospheric pollution, as a fine particle containing heavy metal compounds, can become a source of radiation contamination in ash dumps. The method of solutions with different pH was used in the work. An actual study demonstrates the ability of acid solutions to reduce the radioactivity of waste of high-carbon raw materials that have been heat-treated as a result of thermal processes in the production of the energy complex better than other samples. It is shown that the treatment of ash and slag with acidic reagents will reduce the radiation of beta particles in the place of their accumulation. Contaminated drains are subjected to secondary treatment to isolate useful materials.
MONITORING OF INDICATORS OF THERMAL AND OXIDATIVE STABILITY OF RUSSIAN-MADE MINERAL ENGINE OIL UNDER SEVERE OPERATING CONDITIONS
Authors: Афанасов В.И. , Лунев А.С. , Каверзина А.С. , Карнаухов И.В. , Сорокин Е.А. , Сорокина Н.П.
Published: January 2024

В процессе эксплуатации силовых установок карьерной техники применяются различные рабочие жидкости, что позволяет расширить температурный и географический диапазон использования оборудования. Чтобы уменьшить воздействие не благоприятных факторов, производители рабочих жидкостей разрабатывают специальные добавки, которые защищают масла от процессов окисления и снижают их вязкость при низких температурах. Также важным аспектом является правильное обслуживание и замена масел в соответствии с рекомендациями производителя оборудования соответствующей группы, что позволяет поддерживать высокую производительность силовых установок на протяжении всего срока их эксплуатации.

Various working fluids are used for power plants of quarry equipment, which makes it possible to expand the temperature range of equipment use. To reduce the impact of unfavorable factors, manufacturers of working fluids develop special additives that protect oils from oxidation and reduce their viscosity at low temperatures. Also an important aspect is the proper maintenance and replacement of oils in accordance with the recommendations of the equipment manufacturer, which allows you to maintain high performance of power plants throughout their entire life.
METHOD FOR THE PREPARATION OF 1,3-DIAMINO-2,4,6-TRINITROBENZENE
Authors: Щурова И.А. , Сысолятин С.В. , Малыхин В.В.
Published: January 2024

Статья посвящена способу получения 1,3-диамино-2,4,6-тринитробензола – термически стабильного взрывчатого вещества – из 1,3-дигидрокси-2,4,6-тринитробензола в две стадии с суммарным выходом до 80 %. Изучена реакция алкилирования 1,3-дигидрокси-2,4,6-тринитробензола триэтилортоформиатом с образованием 1,3,5-тринитро-2,4-диэтоксибензола, определены оптимальные условия процесса. Показано, что аммонолиз алкокси-производного в среде ДМФА происходит с высокой скоростью, выходом и качеством 1,3-диамино-2,4,6-тринитробензола.

The present study reports a two-stage synthetic method for 1,3-diamino-2,4,6-trinitrobenzene, a thermally stable explosive material, from 1,3-dihydroxy-2,4,6-trinitrobenzene, with a total yield of up to 80%. The alkylation reaction of 1,3-dihydroxy-2,4,6-trinitrobenzene with triethylorthoformate to give 1,3,5-trinitro-2,4-diethoxybenzene was examined, and the optimal conditions for the process were determined. The ammonolysis of the alkoxyl derivative in DMF was found to proceed with a high rate, yield and quality of 1,3-diamino-2,4,6-trinitrobenzene.
SYNTHESIS AND PROPERTIES OF NEW IONIC SALT BASED ON 1-n-BUTYL-1,2,4-TRIAZOLE AND TRINITRORESORCINOL
Authors: Крупнова И.А. , Суханов Г.Т. , Босов К.К. , Суханова А.Г. , Филиппова Ю.В. , Пивоварова Е.В.
Published: January 2024

В результате взаимодействия 1-n-бутил-1,2,4-триазола с тринитрорезорцином было получено ионное соединение – 1,3-гидрокси-2,4,6-тринитрофенолат-1-бутил-1H-[1,2,4]триазол-4-ия, в котором в качестве катиона выступает 1-n-бутил-1,2,4-триазолия, а аниона – 1,3-гидрокси-2,4,6-тринитрофенолат-анион. Структура целевого соединения подтверждена спектральными методами анализа: 1Н и 13С ЯМР-спектроскопией. Методом ДСК изучены термические характеристики. Экспериментально показано, что полученная соль плавится с последующим двухэтапным разложением.

An ionic compound, 1,3-hydroxy-2,4,6-trinitro-phenolate-1-butyl-1H-[1,2,4]triazol-4-ium, in which 1-n-butyl-1,2,4-triazolium acts as the cation and 1,3-hydroxy-2,4,6-trinitro-phenolate anion as the anion, was synthesized by the reaction between 1-n-butyl-1,2,4-triazole and trinitroresorcinol. The structure of the target compound was confirmed by spectral analytical techniques such as 1Н and 13С NMR spectroscopy. The thermal behavior was studied by the DSC technique. The resultant salt was experimentally shown to melt, followed by two-stage decomposition.
CREATING A VIRTUAL MODEL OF A ROOM WITH A THREE-DIMENSIONAL REAL ESTATE CADASTRE
Authors: Пархоменко Н.А. , Нугманов А.А. , Гарагуль А.С.
Published: January 2024

В статье изложены результаты исследовательского проекта по созданию 3D-модели помещения по цифровым фотографиям с использованием камеры смартфона и программы AgisoftPhotoscanProfessional, совмещая их с данными, полученными при съемке электронным тахеометром. Обозначены возможности применения описываемых технологий для развития трехмерного кадастра, которые способны облегчить процедуру создания виртуальной модели через адаптацию практикующих в современных условиях виджетов. Приводится технологическая последовательность создания модели помещения в виртуальном формате. Обоснована точность линейных измерений помещения и отдельных предметов в нем в реальных условиях и по модели. Приведены результаты определения площади помещения и величины средней квадратической погрешности, приведена оценка энергозатратности и ресурсоёмкости работ. Выполнен сравнительный анализ оборудования с экономичной и дорогостоящей ценовой категорией, дана оценка использования оборудования с соответствующими вычислительными характеристиками. Таким образом, авторами рассмотрен новый математический метод интерпретации натурного эксперимента на основе его математического моделирования при использовании программных продуктов. Обосновано использование технологий как для развития трехмерного кадастра, так и в сферах планирования дизайнерских решений и реконструкции помещений.

The article presents the results of a research project to create a 3D model of a room based on digital photographs using a smartphone camera and the Agisoft Photoscan Professional program, combining them with data obtained when shooting with an electronic total station. The possibilities of using the described technologies for the development of a three-dimensional cadastre are outlined, which can facilitate the procedure of creating a virtual model through the adaptation of widgets practicing in modern conditions. The technological sequence of creating a model of a room in a virtual format is given. The accuracy of linear measurements of the room and individual objects in it in real conditions and according to the model is justified. The results of determining the area of the room and the value of the average square error are presented. The use of technologies is justified both for the development of a three-dimensional cadastre, and in the areas of planning design solutions and reconstruction of premises.
Utilizing Artificial Intelligence in Language Learning: What About Engineering Students’ Perception?
Authors: Persulessy Sylvia Irene , Nikijuluw Reynold P. J. Vigeleyn , Jakob Juvrianto Chrissunday
Published: January 2024

Presented as a technological innovation set to usher in significant changes globally, artificial intelligence (AI) enters various segments of life, especially in the field of education. Civil engineering students, as part of their learning journey, try to apply it in class, especially in aspects of engineering English vocabulary. In the current study, students used the English Language Speech Assistant (ELSA) application. The research method used was descriptive research, where the research subjects were taken from 1 class of 29 students. In this study the questionnaires were used as instruments to collect research data. Based on the results of survey analysis and data collected, it was revealed that students had very good and positive perceptions of using the ELSA application. Students exhibit great joy and enthusiasm in learning engineering English vocabulary using the ELSA application. In addition to offering an effective means of pronouncing vocabulary words, this application's feedback also serves as a motivational factor to learn engineering English vocabulary. Thus, the student's positive perspective on this application of AI can be an indicator of the success of students' language learning in the future.
The Effect of Bumper Stickers Strategy to Improve Students’ Reading Comprehension Viewed from Students’ Reading Interest
Authors: Saptarina Eva , Sartika Dewi , Amelia Kiki Rizki
Published: January 2024

Reading is essential for information acquisition, but students often struggle with understanding descriptive writing. To improve reading comprehension, educators could employ the Bumper Sticker strategy, using color-coded lists to help students grasp the text's main ideas. This study reports the effectiveness of the bumper sticker reading strategy in fostering students' reading interests. The quasi-experimental study comprised two groups of seventh-grade students, each consisting of 40 students. Data were gathered through a reading interest questionnaire and a multiple-choice reading comprehension test. Results reveal that the Bumper Sticker strategy effectively enhances reading comprehension aligned with students' interests. Notably, the conventional strategy also improves comprehension in alignment with students' interests. Lastly, the Bumper Sticker strategy is particularly effective for highly interested students. The recommendation is to employ the bumper sticker strategy, enabling students to create color-coded lists, thereby enhancing their comprehension of the material.
Cultural Representation on The Functional Grammar Exercises in an Indonesian Junior High School English Textbook
Authors: Fauzi Ashar , Dewi Tiara Ayu Kusuma
Published: January 2024

Studies on English language textbook analysis rarely incorporate cultural values in the functional grammar exercises since it is a crucial learning material in the English textbook. To address this gap, we aim to pinpoint the representation of cultural values in the functional grammar exercises in an Indonesian junior high school English textbook. By employing critical discourse study as the research methodology, we analyzed both the visual and textual data presented on the functional grammar exercises in the textbook. We adopted two analytical tools for analyzing data, i.e. transitivity analysis; and critical discourse analysis. The result shows that there are 28 functional grammar exercises that facilitate students in making meaning. Meaningful cultural representation from many social practices was found. This study suggests incorporating its findings into teaching to explain cultural values to students. Further studies need to focus on providing teacher experiences in teaching functional grammar exercises.
EFL Students’ Voices of Blended Collaborative Learning in Completing Digital End-of-semester Projects
Authors: Utomo Dias Tiara Putri , Ahsanah Finaty , Ryandini Elda Yulia
Published: January 2024

Advances in technology have made it possible to conduct collaborative learning online via the Internet. Blended collaborative learning combines online knowledge with on-site meetings to allow students to complete tasks and projects together in a group. This research aimed to elaborate voices of freshmen EFL students toward blended collaborative learning including perceived benefits, challenges, and how the students overcame the challenges, especially in completing digital comic projects. This phenomenological study was conducted at a private university in Indonesia. A total of 18 students participated in this study. They were interviewed face-to-face to obtain the data. The data were analyzed by qualitative data analysis by preparing the data, coding, and generating themes. The findings indicate the perceived benefits which included academic improvement, social and psychological benefits, and digital technology mastery. Additionally, challenges were found in terms of having different perceptions and ideas, lack of motivation and low responsibility to participate, and digital technology barriers. To tackle the problems, some efforts were made including building effective communication via collaborative tools, distributing various and equal roles, and learning from various sources.
Using Independent Learning Log for Listening Skill Learning Among First Year University Students
Authors: Salimah Salimah , Dewanti Anna
Published: January 2024

Students freshly admitted to the English Language and Literature study program has various levels of English proficiency. To maximize their listening skills, independent learning log was administered to the students to support their learning activities outside classroom. This action research was aimed at investigating the benefits of the log for the students’ listening skills, and for the students’ English learning in general. Data was collected from a listening class comprising 42 students. Each student was given an independent learning log and had to complete the log outside the classroom. Classroom discussions during the log completion were carried out in several meetings throughout the semester. In addition, the independent learning reflection was conducted at the last week of the semester. The findings indicate that the benefits of using the independent learning log for students were self-paced learning, more personalized choices, and more peer collaboration. Specifically, students became more self-directed and autonomous. Furthermore, they shared learning resources, forming a class-based learning community. Collectively, all of these benefit their future learning.