bluuebunny/crossref_metadata_2025_split huggingface dataset:
ANÁLISE ESPAÇO-TEMPORAL DA MUDANÇA DA COBERTURA VEGETAL E USO DA TERRA NA ÁREA DE PROTEÇÃO AMBIENTAL E RECUPERAÇÃO URBANA (APARU) DO JEQUIÁ – ILHA DO GOVERNADOR – MUNICÍPIO DO RIO DE JANEIRO (RJ)
Authors: PECORELLA Daniele Pereira , COSTA Vivian Castilho da 
Published: September 2024

RESUMO – O manguezal é um importante ecossistema litorâneo que funciona como uma barreira aos impactos erosivos provocados por ondas e marés. Entretanto, revela fragilidades que podem ser agravadas pela ação humana. O presente trabalho tem por objetivo analisar a evolução espacial e temporal da Área de Proteção Ambiental e Recuperação Urbana (APARU) do Jequiá através da análise de uso e cobertura vegetal dos anos 2010 e 2018. Foram utilizados banco de dados espaciais com bases cartográficas georreferenciadas de cobertura vegetal e uso da terra dos referidos anos, em escala 1:10.000, fornecidos pelo IPP/RJ. Os dados vetoriais foram processados por geoprocessamento no software ArcGIS 10.4 e realizado o cálculo de área para cada classe gerada. As informações foram plotadas em planilha para gerar tabela comparativa. Foram observadas mudanças significativas em quatro classes: floresta ombrófila densa (+3.96%) em detrimento de vegetação arbórea não florestal (-5,38%) e ganho expressivo de vegetação gramíneo lenhosa (+4,5%) em detrimento das áreas urbanas (-3,17%). A área de manguezal não apresentou modificação. Observou-se a necessidade de atualização do banco de dados da Prefeitura Municipal do Rio de Janeiro em relação a este mapeamento a fim de possibilitar avaliar cenários ambientais futuros para o ecossistema manguezal.
Palavras-chave: Ecossistema manguezal. Unidade de conservação. Litoral brasileiro. Evolução da paisagem.

ABSTRACT – The mangrove is an important coastal ecosystem that it works as a barrier to erosive impacts aggravated by waves and tides. However, it reveals fragilities, which can be aggravated by human activities. This paper presents time-spatial analysis evolution of Environmental Protection Area and Urban Recovery (APARU) of Jequiá through of vegetable use and coverage analyses of 2010 and 2018 years. It was used spatial database with georeferenced cartography bases of vegetable use and coverage of mentioned years, in scale 1:10.000, that it was provided at Pereira Passos Institute/RJ. The vector datas was processed for geoprocessing on ArcGIS software 10.4 and it was realized the area calculation for each generated class. The information was plotted in Excel to generate comparative table. It was noted significant changes in four classes: dense rainforest (+3.96%) to the detriment of non-forest arboreal vegetation (-5.38%) and expressive gain of woody and grassy vegetation (+4.5%) to the detriment of urban areas (-3.17%). The mangrove area doesn’t present modification. It observed the necessity of database actualization of Rio de Janeiro city hall in relation to this mapping to possibility to avaliate future environmental scenarios for the mangrove ecosystem.
Keywords: Mangrove ecosystem. Conservation unit. Brazilian coast. Landscape evolution.
PETROLOGIA E METALOGENIA DO MACIÇO PALANQUETA, MINA DE ESTANHO BOM FUTURO, RONDÔNIA, BRASIL: I - GEOLOGIA, PETROGRAFIA E GEOCRONOLOGIA
Authors: CIOTTA Matheus Ramos , LEITE JÚNIOR Washington Barbosa , PAYOLLA Bruno Leonelo , SILVA Marly Aparecida da , MUZZOLON Renato , BETTENCOURT Jorge Silva 
Published: September 2024

RESUMO - O maciço Palanqueta ocorre nos domínios da Suíte Intrusiva Rondônia (1026-974 Ma) na Província Estanífera de Rondônia (SW do Cráton Amazônico). O maciço representa um plúton multifásico intrudido em nível elevado da crosta continental. Mapeamento geológico na escala 1:2.000 definiu cinco unidades graníticas, as quais são representadas por um biotita-álcali-feldspato granito equigranular (ca. 1026 Ma) e quatro álcali-feldspato granitos com mica de lítio e ferro e topázio (ca. 1000 Ma) diferenciados por aspectos texturais (inequigranular, porfirítica I, porfirítica II e miarolítica). Os álcali-feldspato granitos com mica de lítio e ferro e topázio apresentam características texturais e mineralógicas semelhantes aos granitos peraluminosos associados com depósito de metais raros. Corpos de greisens (pipes e veios) mineralizados em metais raros (Sn e W) e básicos (Cu, Pb e Zn) estão associados principalmente com a fácies porfirítica II.
Palavras-chave: Granito rapakivi. Granito com topázio. Depósito de metais raros. Província Estanífera de Rondônia. Brasil.

ABSTRACT - The Palanqueta massif occurs in the Rondônia Intrusive Suite (1026-974 Ma) domain in the Rondônia tin province (SW Amazonian Craton). The massif represents a multiphase pluton intruded in a high crustal level. Geologic mapping on 1:2000 scale defined five granitic units, that are represented by one equigranular biotite-alkali-feldspar granite (ca. 1026 Ma) and four Li-Fe mica- and topaz-bearing alkali-feldspar granites (ca. 1000 Ma), which are distinguished by textural aspects (inequigranular, porphyritic I, porphyritic II and miarolitic). The Li-Fe mica and topaz-bearing granites show textural and mineralogical characteristics of peraluminous rare-metal granites. Mineralized greisen bodies (pipes and veins) in rare metals (Sn and W) and base metal (Cu, Pb e Zn) are mainly associated with porphyritic II facies.
Keywords: Rapakivi granite. Topaz-bearing granite. Rare-metal deposit. Rondônia Tin Province. Brazil.
Döner-Vermarkter könnten Probleme bekommen
Authors: Balzer Heike 
Published: September 2024

Nach dem neuen Ranking des Lieferservice „Lieferando“ wird im sächsischen Dresden am häufigsten Döner bestellt. Die Döner- Industrie ist hierzulande ein bedeutender Wirtschaftsfaktor: Jährlich werden 2,4 Mrd. Euro umgesetzt. Jetzt soll die Zutatenliste eingeengt werden.
Efektivitas Penerapan Project Based Learning Berbantuan Papercraft terhadap Pemahaman Konsep Matematis Peserta Didik
Authors: Huda Dwiyanti Nurul , Supratman Supratman , Herawati Linda 
Published: September 2024

Kurangnya kemampuan peserta didik dalam menyatakan ulang konsep dari soal yang diberikan, yang merupakan indikator pemahaman konsep, berkontribusi pada kesalahan penggunaan rumus dan nilai yang rendah dalam ulangan harian materi bangun ruang sisi datar. Penelitian ini bertujuan untuk mengetahui keefektivan model project based learning berbantuan papercraft terhadap pemahaman konsep matematis peserta didik. Jenis penelitian ini yaitu kuantitatif dengan metode penelitian pre-eksperimen design. Populasi dalam penelitian ini yaitu seluruh kelas VIII SMP Negeri 2 Darmaraja. Sampel pada penelitia ini yairu kelas VIII-D diambil dengan menggunakan teknik probability sampling. Teknik pengumpulan data yang digunakan pada penelitian ini yaitu tes pemahaman konsep matematis peserta didik pada materi bangun ruang sisi datar. Hasil penelitian ini adalah penggunaan model project based learning berbantuan papercraft efektif terhadap pemahaman matematis peserta didik, dibuktikan dengan ketercapaian melampaui Kriteria Ketercapaian Tujuan Pembelajaran (KKTP) dalam pemahaman matematika dengan nilai rata-rata 79,85, nilai terendah kelas memiliki nilai 70 dan nilai tertinggi adalah 90. Berdasarkan kriteria pengujian, H0 diterima jika exact.sig > 0,05. Nilai exact.sig yang didapatkan berdasarkan hasil perhitungan yang menggunakan bantuan software SPSS Versi 24.yaitu sebesar 0,024, maka pada taraf α = 0,05 H0 ditolak dan H1 diterima. Dapat disimpulkan bahwa penggunaan model project based learning efektif terhadap pemahaman konsep matematis peserta didik.
Penggunaan Pendekatan Pendidikan Matematika Realistik Indonesia (PMRI) pada Teorema Pythagoras terhadap Hasil Belajar Siswa
Authors: Nabuasa Meriana , Making Samuel Rex Mulyadi , Lede Yulius Keremata , Cordia Grassiana Misseri 
Published: September 2024

Rendahnya hasil belajar matematika siswa disebabkan oleh beberapa faktor yaitu materi pelajaran yang dirasakan masih bersifat abstrak dikarenakan kurangnya contoh yang diaplikasikan dalam kehidupan dunia mereka, dan juga metode pembelajaran yang digunakan oleh guru adalah metode ceramah dan tanya jawab sehingga siswa cenderung pasif dalam proses pembelajaran. Salah satu pendekatan yang erat kaitannya dengan kehidupan sehari-hari siswa adalah Pendekatan Pendidikan Matematika Realistik Indonesia. Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan pendekatan Pendidikan matematika realistik Indonesia terhadap hasil belajar pada pokok bahasan teorema Pythagoras. Jenis penelitian yang digunakan adalah penelitian eksperimen yang menggunakan metode pre eksperimental dengan menggunakan desain one group pretest- posttest. Penelitian ini dilakukan pada kelas VIII SMP Negeri 1 Wewewa Tengah dengan subjek penelitian ini yakni siswa kelas VIII A. Data yang dikumpulkan berupa pretest dan posttest dalam bentuk uraian untuk menilai hasil belajar siswa. Teknik analisis data yang digunakan adalah analisis statistik, dengan bantuan program SPSS versi 29. Berdasarkan hasil penelitian menunjukkan bahwa pendekatan Pendidikan matematika realistik Indonesia memiliki pengaruh terhadap hasil belajar siswa.
Upaya Meningkatkan Kemampuan Koneksi Matematis Siswa Melalui Model Pembelajaran Problem Based Learning (PBL)
Authors: Hasibuan Khoirunnisa , Dachi Surya Wisada , Lubis Mindo Juliani Kelly 
Published: September 2024

Rendahnya kemampuan Koneksi matematis siswa perlu diatasi dengan menerapkan pembelajaran yang tepat karena berkaitan dengan kemampuan siswa mengaitkan konsep matematika dengan konsep lain atau dengan kehidupan sehari-hari. Jenis penelitian yang dilakukan adalah jenis penelitian tindakan kelas yang dilaksanakan dalam 2 siklus dengan menggunakan model pembelajaran Problem Based Learning (PBL). Dalam setiap siklus terdiri dari 4 tahap yaitu penyusunan perencanaan, pelaksanaan tindakan, pengamatan (observasi), dan refleksi. Penelitian ini bertujuan untuk meningkatkan kemampuan koneksi matematis siswa melalui model pembelajaran Problem Based Learning (PBL). Penelitian dilakukan di SMK N 6 Medan dengan subjek penelitian siswa kelas XI OTKP 2 dengan jumlah siswa sebanyak 35 siswa. Dari hasil penelitian menunjukkan bahwa kemampuan koneksi matematis siswa dengan model PBL dapat meningkat. Dimana pada tes kemampuan awal siswa kemampuan koneksi matematis yang dimiliki siswa masih tergolong rendah yaitu 42,28%. Dan pada siklus I setelah dilakukan penerapan model PBL kemampuan siswa jadi meningkat ke dalam kategori sedang yaitu 72,26%, karna siklus I belum mencapai target keberhasilan dengan demikian dilanjutkan pada siklus II. Hasil tes pada siklus II didapatkan 88,25% yang masuk dalam kategori tinggi, dengan demikian pada siklus II sudah mencapai target keberhasilan maka penelitian dilakukan sampai siklus II saja. Sehingga dapat disimpulkan bahwa penerapan model Problem Based Learning (PBL) dapat meningkatkan kemampuan koneksi matematis siswa pada materi fungsi komposisi dan invers di SMK N 6 Medan.
Analisis Kemampuan Metakognitif Siswa yang Menggunakan Pendekatan Pembelajaran Metakognitif-Diskursif pada Materi Persamaan Linear Satu Variabel
Authors: Ratu Meriana , Moza Florida , Napu Timotius W. , Lubur Dorothea N. 
Published: September 2024

Penelitian ini bertujuan untuk mengetahui kemampuan metakognitif siswa yang menggunakan pendekatan pembelajaran Metakognitif-Diskursif pada materi PLSV. Jenis Penelitian yang digunakan dalam penelitian ini adalah deskriptif kualitatif. Dalam penelitian ini peneliti memilih siswa kelas VIII A SMPK St. Paulus Karuni sebanyak 23 siswa sebagai subjek yang akan diteliti kemampuan metakognitifnya dalam mengerjakan soal PLSV. Instrumen yang digunakan terdiri dari catatan harian, dan soal tes. Analisis hasil tes menggunakan pedoman penilaian dan penskoran. Analisis kemampuan metakognitif menggunakan indikator yang dikemukakan oleh Cohors-Fresenborg & C. Kaune yang terdiri dari perencanaan, pemantauan, dan refleksi. Metode pengumpulan data yang digunakan adalah tes dan dokumentasi. Teknik analisis data yang digunakan adalah reduksi data, penyajian data dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa berdasarkan analisis kemampuan metakognitif siswa dengan menggunakan indikator yang dikemukakan oleh E. Cohors-Fresenborg & C. Kaune diperoleh siswa kategori tinggi sebanyak mampu menggunakan metakognitifnya dengan baik dalam menyelesaikan soal PLSV. Siswa kategori sedang sebanyak dapat menggunakan metakognitifnya dalam menyelesaikan soal PLSV, namun masih kurang maksimal. Sedangkan siswa kategori rendah sebanyak tidak dapat menggunakan metakognitifnya dalam menyelesaikan soal PLSV.
Avaliação de instrumentos de satisfação com a assistência ao parto
Authors: Bispo Alves Junior Lourivaldo , Oliveira Medeiros de Mendonça Gabrielle , Faiad Cristiane , Ferreira Barros Ângela 
Published: September 2024

Objetivo: mapear os instrumentos que avaliam a satisfação de mulheres no atendimento ao parto hospitalar. Método: revisão de escopo nas bases de dados PubMed, Biblioteca Virtual em Saúde, Cochrane e Scielo com os descritores “Satisfação do paciente”, “Parto” e “Estudo de Validação”, analisados em junho de 2021. Resultados: foram identificados seis instrumentos que avaliam como dimensões mais frequentes a parturiente, o nascimento, a assistência obstétrica e o acompanhante. Todos os instrumentos adotaram métodos para avaliar a evidência de validade e confiabilidade, sendo que três deles apresentaram dados psicométricos que possibilitaram avaliar a qualidade da medida. Houve maior prevalência da validação transcultural e análise de consistência da medida por meio do alfa de Cronbach. Conclusão: as medidas identificadas contribuem para os construtos, embora esse contexto demande medidas mais adequadas de estabilidade, de validade de critério, equivalência e responsividade.
Cost-Effectiveness of Conjugate Pneumococcal Vaccines in At-Risk Adults Aged 18 to 64 Years
Authors: CADTH  
Published: September 2024

Eight economic evaluations (6 peer-reviewed, 2 summarized in a single grey literature source) assessing the cost-effectiveness of pneumococcal conjugate vaccines in adults aged 18 to 64 years at high risk of invasive pneumococcal disease (IPD) in high-income countries were identified.

The 2 economic evaluations summarized in the single grey literature source were industry-sponsored analyses. A version of the results was previously summarized by the Public Health Agency of Canada. As such, the methods and results of the industry-funded models are only summarized in Appendix 3 for this review.
None of the peer-reviewed studies identified assessed the cost-effectiveness of pneumococcal 15-valent conjugate vaccine (PCV15), pneumococcal 20-valent conjugate vaccine (PCV20), or pneumococcal 21-valent conjugate vaccine (PCV21).
Of the peer-reviewed studies, 2 were conducted in the US, 2 in South Korea, 1 in Spain, and 1 in Hong Kong. All results were presented in terms of incremental cost-effectiveness ratios (ICERs) (i.e., incremental cost per quality-adjusted life-years gained).

Four studies concluded that 1 dose of pneumococcal 13-valent conjugate vaccine (PCV13) was cost-effective relative to either no vaccination, 2 doses of PCV13, PCV13 plus 2 doses of pneumococcal polysaccharide 23-valent vaccine (PPSV23), or 2 doses of PPSV23.
Two studies concluded that PCV13 plus PPSV23 was cost-effective relative to either no vaccination or 1 dose of PPSV23, but the studies did not evaluate the cost-effectiveness of PCV13 alone.
The studies did not all consider the same vaccination strategies.

The sources used to parameterize vaccine effectiveness in the peer-reviewed studies are highly uncertain, as the clinical evidence was either not representative of the target population or heavily reliant on expert input and assumptions.

The generalizability of the economic evaluations may be limited because the study settings were notably different from Canada. To estimate the potential cost-effectiveness of pneumococcal conjugate vaccines in Canada, a de novo economic evaluation conducted from a setting is Canada is required.
Unprecedented 21st century glacier loss on Mt. Hood, Oregon, USA
Authors: Bakken-French Nicolas , Boyer Stephen J. , Southworth B. Clay , Thayne Megan , Rood Dylan H. , Carlson Anders E. 
Published: September 2024

Abstract. As part of the southern Cascades, Mt. Hood is the tallest and most glacierized peak in Oregon, USA. Despite alpine glaciers being one the clearest indicators of human-caused climate change, the 21st century behavior of glaciers on Mt. Hood has not been directly documented at the ground level. Here we directly measure changes in the extents of Mt. Hood's glaciers from 2003 to 2023 and find dramatic retreat of all glaciers, with one glacier ceasing to flow (joining another glacier that ceased flowing before 2003) and another three glaciers retreating towards this status. By 2023, Mt. Hood glaciers had lost ∼17 % of their 2015–2016 area and ∼39 % of their 1981 area. The rate of area loss from 2015–2016 to 2023 (∼2.10 % yr−1) was ∼2.6 times faster than the rate from 1981 to 2015–2016 (∼0.81 % yr−1). The seven largest glaciers on the volcano lost ∼25 % of their area between 2000 and 2023. Comparison to historic records of glacier area back to 1907 shows that this 21st century retreat is unprecedented relative to the previous century. The rate of area loss over the last 23 years (∼1.07 % yr−1) was ∼1.9 times faster than the fastest rate documented in the last century from 1907 to 1946 (∼0.56 % yr−1) and ∼3.5 times faster than the 20th century average (∼0.31 % yr−1). This unprecedented rate of retreat corresponds to regional summer warmth reaching 1.7–1.8 °C (2013–2023 average) relative to the early 1900s, but not with regional changes in winter precipitation. We conclude that Mt. Hood's glaciers are retreating in response to a warming climate and that this recession has accelerated in the 21st century.
TECHNOLOGICAL FEATURES OF ARC DEEP RECOVERY OF USEFUL IMPURITIES OF METALLURGICAL WASTE FOR THE TREATMENT OF IRON-CARBON MELTS
Authors: Куберский С.В. 
Published: September 2024

Внепечная обработка железоуглеродистых расплавов является неотъемлемой частью современной технологии их производства, обеспечивающей высокое качество металлопродукции. Однако в условиях мини- и микрозаводов, использующих технологические агрегаты небольшого единичного объема, не всегда удается реализовать современные высокоэффективные схемы рафинирования, раскисления-легирования и нагрева, присущие агрегатам ковш-печь и вакууматорам. Кроме того, актуален вопрос широкого использования при выплавке чугуна и стали различных отходов производства с целью их рециклинга и сокращения расхода традиционных шихтовых материалов. Поэтому в работе предложен новый метод дугового глубинного восстановления полезных для металлургии элементов из промышленных отходов и вторичных материалов непосредственно в железоуглеродистый расплав, для его раскисления-легирования (рафинирования), гомогенизации и нагрева заглубленной электрической дугой. Такая технология исключает применение дорогостоящих реагентов, ферросплавов и лигатур. На основе проведенных исследований установлена схема процессов дугового глубинного восстановления элементов, предложена конструкция рудно-восстановительных блоков и их состав, показана высокая эффективность нового способа внепечной обработки в сравнении с традиционными аналогами.
Out-of-furnace processing of iron-carbon melts is an integral part of the modern technology of their production, which ensures high quality of metal products. However, in the conditions of mini- and micro-factories using technological units of a small unit volume, it is not always possible to implement modern highly efficient refining, deoxidation-alloying and heating schemes that are used by automatic transmitters and vacuum cleaners. In addition, the issue of widespread use of various production wastes for the production of cast iron and steel in order to recycle them and reduce the consumption of traditional charge materials is relevant. Therefore, a new method of arc deep reduction of elements useful for metallurgy from industrial waste and secondary materials directly into an iron-carbon melt for its deoxidation-alloying (refining), homogenization and heating by a buried electric arc. This technology eliminates the use of expensive reagents, ferroalloys and ligatures. On the basis of the conducted research, a scheme of the processes of arc deep reduction elements has been established, the design of ore-reducing blocks and their composition have been proposed, and the high efficiency of the new method of out-of-furnace processing in comparison with traditional analogues has been shown.
THE POSSIBILITY OF CONTROLLING THE STEELMAKING PROCESS IN EAF TO OPTIMISE TECHNICAL AND ECONOMIC PERFORMANCE
Authors: Люлякин А.П. , Тверской А.Б. , Зезюлин А.В. , Гусев М.П. , Седухин В.В. , Матвенов М.Е. , Гаврилов И.Ю. 
Published: September 2024

В статье приведено описание современных методов контроля и оптимизации энергетического режима плавки в дуговых сталеплавильных печах и агрегатах внепечной обработки стали с помощью систем оптической эмиссионной спектроскопии. Такие системы позволяют определять температуру расплава и шлака, температуру плазмы в районе горения дуги, состав шлака, а также анализировать интенсивность излучения поверхности расплава и шлака. На основе анализа установлено, что в зависимости от сортамента выплавляемой стали и особенностей технологии выплавки на конкретной ДСП имеется возможность создания систем контроля для мониторинга выплавки, опирающихся на получаемые показатели как одного из вышеперечисленных параметров, так и их комплекса.
The article describes modern methods of control and optimization of the energy mode of melting in electric arc furnaces and units of out-offurnace steel processing with the help of optical emission spectroscopy systems. These systems allow determining the temperature of melt and slag, plasma temperature in the area of arc combustion, slag composition, as well as to analyze the emission intensity of the melt and slag surface. On the basis of the analysis it has been established that depending on the range of steel to be smelted and peculiarities of smelting technology at a particular batch plant there is a possibility to create control systems for smelting monitoring based on the obtained indicators of one of the above-mentioned parameters or their complex.
EXPERIMENTAL MOLD FOR OBTAINING CONTINUOUSLY CAST BILLETS FROM HIGH ALLOY STEELS AND ALLOYS. Part 3. Testing of an experimental mold on a medium temperature aluminum alloy
Authors: Стулов В.В. , Шафиев О.М. 
Published: September 2024

Впервые выполнены опытные разливки алюминиевого сплава в запатентованный кристаллизатор с испарительноконденсационной системой охлаждения с вытягиванием полученной цилиндрической заготовки диам. 62 мм. Показано, что расход охлаждающей воды на кристаллизатор может быть уменьшен в 2–3 раза путем повышения температуры выходящей из конденсатора воды до t = 60–80 °С. Выполнены корректировки конструктивного расчета температуры стенок с учетом предварительного разогрева кристаллизатора и экспериментальных значений температуры. Проанализировано состояние поверхности полученных заготовок в двух режимах разливки. Выполнены расчет и сравнение подведенного и отведенного в кристаллизатор тепла, толщины корочки заготовки.
For the first time, pilot castings of an aluminum alloy into a patented mold with an evaporative-condensation cooling system were carried out with drawing of the resulting cylindrical billet with a diameter of 62 mm. It is shown that the flow rate of cooling water to the mold can be reduced by a factor of 2–3 by increasing the temperature of the water leaving the condenser to t = 60–80°C. Adjustments were made to the design calculation of the wall temperatures, taking into account the preliminary heating of the crystallizer and the experimental values of temperatures. The state of the surface of the obtained workpieces was analyzed in two pouring modes. The calculation and comparison of the heat supplied and removed to the mold, the thickness of the billet crust were performed.