bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of E-Modules Based On Mobile Learning Applications to Improve Students' Critical Thinking Skills in Science Subject
Authors: Uma'iyah Nofita , Wahyuni Sri , Nuha Ulin
Published: May 2023

Developing an E-module based on a mobile learning application is used to improve the critical thinking skills of junior high school science students. Objective: This research aims to develop products in e-modules based on mobile learning applications that are valid, practical, and effective. Methods: The research method used is the ADDIE development model, which includes five stages: analyzing, designing, developing, implementing, and evaluating. The data analysis techniques used are validation sheets for validity tests and observation sheets for learning implementation for practicality. And the N-gain test and student questionnaire to test effectiveness. Results: Based on the results of the data analysis conducted, e-modules based on mobile learning applications have obtained valid results with average validation scores from the three validators, namely 83%, e-modules based on mobile learning in learning are considered very practical as teaching materials in science learning in junior high school because they get an average score of 94%, e-modules based on mobile learning applications are also considered to have been effective and feasible to use as teaching materials during science learning in junior high school because they have used e-modules based on mobile learning applications, students' thinking skills increase with grades N-gain with a high score of 0.77 and student response with a score of 74% with a good category. Novelty:  Previous researchers have never done this research, which develops e-modules based on mobile learning applications to improve students' critical thinking skills.
Training Scientific Literacy Skills Through Inquiry Learning with Chemcollective's Virtual Laboratory on Chemical Equilibrium
Authors: Ahmad Muhammad Syahru , Rahayu Yuni Sri , Sukarmin Sukarmin
Published: May 2023

Objective: This study uses ChemCollective's virtual laboratory to apply inquiry learning and seeks to describe the application of inquiry learning models, student activities, scientific literacy skills, and student responses. Method: This study uses a one-group pretest-posttest pre-experimental approach. The study tools included student response questionnaires, student activity observation sheets, learning implementation observation sheets, and literacy test instruments. Results: The study's findings were as follows: (1) the inquiry learning model was implemented at 83% of the first meeting and 93% of the second meeting; (2) the average percentage of student activity that is relevant to inquiry learning was 90.24% at the first meeting and 93.60% at the second meeting; (3) the results of the scientific literacy test improved, with an N-Gain Score of 0.76 in the high category and the results of the paired sample t-test revealed a significance value of 0.000; and (4) With very favorable criteria, 98% of students respond on average to inquiry learning when using the ChemCollective virtual laboratory. These findings suggest that, during the odd semesters of the 2022–2023 academic year, first-semester Science Education Study Program students at UIN Sunan Ampel Surabaya can train their scientific literacy through inquiry learning supported by ChemCollective's virtual laboratory.
Projetos de rede de distribuição de energia
Authors:   IF Suzano, Teodoro Cristian Bruno de Oliveira , Tanaka Wilson Yoshio ,   IF São Paulo
Published: May 2023

Com o desenvolvimento tecnológico ao longo dos anos, as concessionárias de rede de distribuição de energia elétrica se aprimoraram para melhoria de seus processos, contudo sempre há espaços para ganhos de produtividade. No que diz respeito a elaboração e execução de projetos de rede de distribuição de energia elétrica, esta atividade é de suma importância e requer a atenção necessária para garantir o atendimento aos prazos regulatórios e satisfação do cliente. Diante de um mercado tão competitivo, as empresas estão sempre buscando formas de entregar o melhor produto, no menor prazo e com o menor custo, para isto a utilização de softwares que possibilitam a automatização e unificação de processos, podem propiciar que este objetivo seja atingido. Existem diversos processos manuais que podem ser otimizados pela utilização de softwares capazes de minimizar esforços e garantir que o tempo dispendido seja mais bem utilizado em tarefas que podem agregar maior valor ao processo.
PENERAPAN E-LEARNING BERBASIS MICROSOFT TEAMS UNTUK MENINGKATKAN HASIL BELAJAR TEMATIK SISWA KELAS IV
Authors: Fauziah Fauziah
Published: May 2023

Tujuan penelitian ini untuk mengetahui pengaruh penerapan E-learning Berbasis Aplikasi Microsoft Teams terhadap hasil belajar tematik pada siswa kelas IV-B SDN Dukuh Menanggal I/424 Surabaya; (2) mendeskripsikan bagaimana tingkat penguasaan materi pelajaran tematik dengan diterapkannya E-learning Berbasis Aplikasi Microsoft Teams pada siswa kelas IV-B SDN Dukuh Menanggal I/424 Surabaya tahun pelajaran 2020/2021. Penelitian ini menggunakan penelitian tindakan (action research) sebanyak dua putaran. Setiap putaran terdiri dari dua tahap yaitu: rancangan, kegiatan dan pengamatan, refleksi dan revisi. Sasaran penelitian ini adalah Siswa Kelas IV-b SDN Dukuh Menanggal I/424 Surabaya Tahun Pelajaran 2020-2021. Hasil penelitian menunjukkan bahwa pembelajaran dengan menerapkan aplikasi microsoft teams memperoleh hasil berikut ini, nilai rata-rata prestasi belajar siswa pada siklus I mencapai 75,4 dan pada siklus II mendapatkan nilai 83,2. Sedangkan, ketuntasan klasikal pada siklus I memperoleh persentase 72% dan siklus II sebesar 88%. Simpulan dari penelitian ini adalah penggunaan aplikasi microsoft teams dapat berpengaruh positif terhadap peningkatan hasil belajar kelas IV-b SDN Dukuh Menanggal I/424 Surabaya Tahun pelajaran 2020/2021, serta model pembelajaran ini dapat digunakan sebagai salah satu alternative pembelajaran tematik pada masa pandemi.
ANALISIS PERKEMBANGAN SOSIAL EMOSIONAL ANAK USIA 5-6 TAHUN MELALUI PERMAINAN LINTANG ALIH DI PONDOK PESANTREN ANAK IBROHIMIYYAH
Authors: Mawaddati Mawaddati , Khasanah Ismatul , Rahmawati Ellya
Published: May 2023

Analisi Perkembangan Sosial Emosional Anak Usia dini sangat penting dilakukan terutama pada anak usia 5-6 tahun di lingkungan Pondok Pesantren. Sehingga ketika anak masuk kejenjang berikutnya sudah mempunyai bekal dan terbiasa mandiri, kemudian cepat berbaur dengan teman sebayanya. Melalui permainan lintang alih ananda di didik untuk mempunyai sifat sosial yang tinggi. Pada usia prasekolah anak-anak belajar menguasai dan mengekspresikan emosi. Pada usia enam tahun anak-anak memahami konsep emosi yang lebih kompleks, seperti kecemburuan, kebanggaan, kesedihan dan kehilangan, tetapi anak-anak masih memiliki kesulitan di dalam menafsirkan emosi orang lain.
ANALISIS KEMAMPUAN DISPOSISI DAN KEMAMPUAN PENALARAN MATEMATIS SISWA KELAS IV PADA MATERI BANGUN DATAR DI SD NEGERI BANTENGMATI 02 DEMAK
Authors: Nizammudin Miftakhun , Sukamto Sukamto , Priyanto Wawan
Published: May 2023

AbstrakTujuan yang hendak dicapai dalam penelitian ini adalah untuk mengetahui kemampuan  disposisi dan kemampuan penalaran matematis siswa kelas IV pada materi bangun datar di SD Negeri Bantengmati 02 Demak.Jenis penelitian ini adalah penelitian  kualitatif deskriptif. Subjek penelitian ini adalah siswa yang berjumlah 25 siswa dan guru kelas IV SD Negeri Bantengmati 02 Demak. Data dalam penelitian ini diperoleh melalui wawancara, observasi, angket dan tes. Hasil analisis kemampuan disposisi matematisi siswa kelas IV SD Negeri Bantengmati 02 Demak termasuk dalam kategori rendah. Hasil angket rata-rata disposisi matematis siswa kelas IV sebesar 46,9% sedangkan hasil observasi siswa saat mengerjakan tugas dirumah sebesar 42%. Selain itu, hasil analisis kemampuan penalaran matematis siswa kelas IV SD Negeri Bantengmati 02 Demak termasuk dalam kategori rendah. Hasil tes penalaran rata-rata siswa kelas IV sebesar 47,7% Berdasarkan hasil penelitian ini saran yang dapat disampaikan adalah penelitian ini diharapkan mampu dijadikan sebagai referensi untuk mengetahui sejauh mana kemampuan disposisi dan kemampuan penalaran matematis siswa pada materi bangun datar, sehingga guru lebih memperhatikan dan membimbing siswa.
PENERAPAN SUPERVISI EDUKATIF SECARA PERIODIK DALAM MENINGKATKAN MINAT DAN KEMAMPUAN MENGGUNAKAN MEDIA PEMBELAJARAN BAGI GURU SEKOLAH DASAR NEGERI 3 BANJARDOWO KECAMATAN KRADENAN KABUPATEN GROBOGAN SEMESTER II TAHUN PELAJARAN 2021/2022
Authors: Partiyem Partiyem
Published: May 2023

Tujuan peneitian ini adalah untuk meningkatkan minat dan kemampuan menggunakan media pembelajaran melalui supervisi edukatif secara periodik bagi guru SDN 3 Banjardowo Kecamatan Kradenan Kabupaten Grobogan Semester II Tahun Pelajaran 2021/2022. Penelitian Tindakan Sekolah ini dilaksanakan pada bulan Januari sampai dengan bulan Mei 2022. Penelitian ini dilaksanakan dengan 2 siklus yang masing-masing siklus meliputi: perencanaan, tindakan, observasi dan refleksi. Hasil penelitian menunjukkan bahwa hasil minat guru dalam menggunakan media mencapai rata-rata 74,99 hasil penilaian kemampuan menggunakan media mencapai 76,38; dan hasil observasi mencapai kualifikasi baik, sedangkan indikator yang diharapkan adalah rata-rata harus mencapai 70,00; 70,00 dan kualifikasi baik. Pada hasil minat guru dalam menggunakan media mencapai rata-rata 74,99, artiya telah mencapai indikator kinerja yang ditetapkan, yaitu 70,00; pada hasil penilaian kemampuan menggunakan media mencapai 76,38, artinya telah mencapai indikator kinerja yang ditetapkan, yaitu 70,00; dan pada hasil observasi rata-rata aspek telah berada dalam kualifikasi baik, atau telah sesuai dengan indikator kinerja yang ditetapkan yaitu kualifikasi baik. Adapun saran diberikan kepada pihak-pihak berkepentingan, meliputi: peneliti, guru dan sekolah secara keseluruhan.
PENINGKATAN KETERAMPILAN MENULIS TEKS PERSUASIF MELALUI MODEL CONTEXTUAL TEACHING AND LEARNING (CTL) DENGAN MEMANFAATKAN LITERASI DIGITAL PADA PESERTA DIDIK KELAS VIII D SMP NEGERI 1 SEMARANG
Authors: Jumrotun Jumrotun
Published: May 2023

Pembelajaran daring memberikan dampak terhadap proses belajar mengajar kepada peserta didik. Pendidik berusaha untuk melaksanakan proses pembelajaran dengan tujuan agar peserta didik memperoleh nilai yang optimal. Penggunaan model pembelajaran inovativ menjadi alternatif yang potensial dalam rangka meningkatkan hasil belajar siswa. Metode pembelajaran yang bisa digunakan salah satunya adalah Model Contextual Teaching And  Learning (CTL). Contextual Teaching And  Learning (CTL) merupakan suatu startegi pembelajaran yang menghubungkan antara konten pelajaran dengan situasi kehidupan nyata, dan mendorong peserta didik mengkaitkan antara pengetahuan dan pengalaman yang didapatnya disekolah dengan kehidupannya. Subjek penelitian ini adalah kelas VIII D di SMP Negeri 1 Semarang. Jenis penelitian ini menggunakan penelitian Penelitian ini merupakan jenis penelitian tindakan kelas atau Classroom Action Research yaitu penelitian yang dilakukan di kelas. Penelitian ini menggunakan analisis dengan perhitungan kuantitatif sederhana dan kualitatif deskripsi. Berdasarkan hasil penelitian dapat disimpulkan bahwa model pembelajaran Contextual Teaching and Learning (CTL) dengan memanfaatkan literasi digital dapat meningkatkan keterampilan menulis teks persuasif pada peserta didik, sehingga lebih banyak peserta didik yang niilainya meningkatkan. Hal tersebut ditunjukkan dengan; rata-rata nilai yang naik sebesar 13 dari 68,3 menjadi 81,3, naik 19,79%., persentase ketuntasan dari 40,62% menjadi 90,6%., dan range (jarak nilai) yang mengecil dari 20 menjadi 16. ). Demikian, dapat diketahui bahwa model pembelajaran Contextual Teaching and Learning (CTL) dengan memanfaatkan literasi digital dapat meningkatkan keterampilan peserta didik dalam menulis teks persuasif serta memperoleh hasil belajar yang lebih baik
PENGEMBANGAN PERANGKAT PEMBELAJARAN DARING KELAS V TEMA 2 SUBTEMA 3 DI SDN GROWONG LOR 01 JUWANA
Authors: Nugroho Novian Setiyo , Wakhyudin Husni , Prasetyo Singgih Adhi
Published: May 2023

Latar belakang yang mendorong  penelitian ini adalah kurangnya pengembangan media pembelajaran yang inovatif pada pembelajaran daring di masa pandemi. Hal tersebut juga disebabkan kurangnya inovasi pendidik dalam menggunakan media pembelajaran yang mengoptimalkan proses belajar mengajar. Rumusan masalah dalam penelitian ini adalah 1) Bagaimanakah  pelaksanaan pembelajaran daring kelas V tema 2 subtema 3 di SDN Growong Lor 01 ? 2) Bagaimanakah perangkat pembelajaran daring yang dapat dikembangkan pada tema 2 subtema 3 kelas V di SDN Growong Lor 01 ?. Tujuan yang hendak dicapaio dalam penelitian ini adalah menghasilkan media pembelajaran yang layak dan praktis serta berorientasi pada Pengembangan Perangkat Pembelajaran Daring Kelas V Tema 2 Subtema 3 di SDN Growong Lor 01 Juwana. Jenis penelitian ini adalah penelitian pengembangan  (Research and Development) dengan menggunakan model ADDIE. Dengan melaksanakan tahap analisis kebutuhan, desain storyboard dan media, pengembangan media dan melakukan validasi, melaksanakan uji coba lapangan, dan melakukan evaluasi pada semua tahap yang dilakukan. Data yang diperoleh berasal dari ahli materi, ahli media, guru kelas dan siswa kelas V. teknik pengumpulan data yang digunakan adalah wawancara dan angket. Penentuan tingkat kelayakan berdasarkan uji validasi oleh ahli materi dan ahli media.
The Use of Clustering Technique to Improve Students’ Writing Skill in Descriptive Text (A Case of The Seventh Grade Students of SMP Negeri 1 Kragan Rembang)
Authors: Armytasari Isrinda Krisna
Published: May 2023

AbstractThis research focuses on improving writing skills in descriptive text using clustering technique. Writing skill is one of the skills that are quite complicated to learn because it requires extra thought to produce words, phrases, sentences, and even paragraphs in a text. Many students still find difficult to explore and develop their idea, students write content not related to the topic, and students write ideas and sentences are not organized well. The sample was students of the seventh-grade of SMP Negeri 1 Kragan Rembang with total was 64 students. The researcher uses experimental research. There were two groups namely experimental group consist of 32 students and control group consist of 32 students. Instrument of the research was writing test. The researcher conducted pre-test and post-test sessions. Data collection was done by using quantitative method. Based on data analysis from the experimental group showed that the mean of pre-test was 58.84 while post-test was 72.84. In the control group showed that the mean of pre-test was 60.59 while post-test was 68.13. In the T-test showed that the sig. (2-tailed) of experiment and control group were 0.000 <0.05. It means that there is a significance difference in the result of students' learning scores between experiment and control group. The result of this research showed that clustering technique can improve students’ writing skill in descriptive text. Clustering technique is a good and easy technique to help develop and organize ideas in writing.
PENGEMBANGAN MEDIA VIDEO PEMBELAJARAN BERBASIS APLIKASI ADOBE PREMIERE MATERI SISTEM PERNAPASAN PADA MANUSIA UNTUK MENINGKATKAN HASIL BELAJAR IPA KELAS V SD N BANJAR HARJO 01
Authors: Amarta Ravena Hemalia , Fajriyah Khusnul , Subekti Ervina Eka
Published: May 2023

Latar belakang yang mendorong penelitian ini adalah guru dan siswa hanya menggunakan buku sebagai bahan ajar satu-satunya, Hal ini mengakibatkan banyak siswa yang nilainya 70% belum mencapai KKM yang telah ditentukan oleh sekolah.  Penunjang media pembelajaran untuk siswa sendiri belum ada. Selain itu media pelajaran yang digunakan belum mencakup keseluruhan materi dan belum dapat meningkatkan kemampuan pemahaman siswa. Permasalahan dalam penelitian ini adalah bagaimana kelayakan media video pembelajaran berbasis aplikasi adobe premiere untuk meningkatkan hasil belajar IPA siswa di Sekolah Dasar. Tujuan dari penelitian ini adalah untuk mengetahui kelayakan media video pembelajaran IPA yang dapat digunakan untuk meningkatkan kemampuan pemahaman siswa di Sekolah Dasar. Jenis penelitian ini adalah penelitian dan pengembangan (Research and Development). Subjek penelitian ini adalah 2 guru di SD Negeri Banjar Harjo 01. Teknik analisis data yang digunakan adalah teknik analisis data deskriptif kualitatif dan teknik analisis data deskriptif kuantitatif. Hasil penelitian menunjukan bahwa produk media video pembelajaran berbasis aplikasi adobe premiere yang dikembangkan telah layak dan dapat digunakan sebagai penunjang media video pembelajaran pada pembelajaran IPA materi sistem pernapasan pada manusia kelas V di SD Negeri Banjar Harjo 01. Hal tersebut berdasarkan hasil kelayakan berdasarkan analisis data oleh pakar ahli materi serta ahli media, dan penilaian hasil uji coba lapangan. Hasil validasi ahli materi 88,5%, validasi ahli media sebesar 92%, penilaian hasil uji coba oleh beberapa guru untuk materi 71% dan media 96%, dan hasil uji coba kepada siswa 99,4%. Berdasarkan hasil penelitian ini saran yang dapat disampaikan adalah guru tidak hanya menggunakan satu media pembelajaran saja. Setidaknya, guru menggunakan media pembelajaran lainnya untuk menunjang pembelajaran. Selain itu guru hendaknya memperhatikan tingkat kemampuan pemahaman siswa guna menunjang pemahaman siswa dalam pelajaran IPA sehingga tidak hanya pembelajaran saja yang baik akan tetapi menghasilkan output yang baik pula.
PRODUK KREATIF PADA PEMBELAJARAN SBDP SEBAGAI MEDIA PENGUATAN KARAKTER SISWA KELAS IV SD N 05 TEGALSARI PEMALANG
Authors: Febriyanti Fike Fitri , Handayani Diana Endah
Published: May 2023

Latar Belakang penelitian adalah kendala siswa SD N 05 Tegalsari Pemalang menciptakan produk kreatif dalam media pengembangan karakter masih mengalami kesulitan siswa cenderung meniru hasil karya teman sehingga hasil kreativitas siswa menciptakan produk menjadi kurang beraneka ragam Permasalahan yang diungkap pada penelitian ini adalah bagaimanakah produk kreatif pada pembelajaran SBdP sebagai media penguatan karakter siswa kelas IV SD N 05 Tegalsari Pemalang. Tujuan penelitian ini adalah untuk mengetahui produk kreatif pada pembelajaran SBdP sebagai media penguatan karakter siswa kelas IV SD N 05 Tegalsari Pemalang. Penelitian ini menggunakan metode kualitatif. pendekatan yang dilakukan dalam penelitian ini adalah deskriptif kualitatif yang dilakukan dengan menguraikan fakta-fakta dan data-data yang diperoleh dari sumber data Pengambilan data melalui observasi, wawancaradan dokumentasi. Kesimpulan dalam penelitian ini adalah Proses pembelajaran pada karya kolase ini lebih menekankan pada kreativitas siswa untuk menggunakan hal baru dan mendapatkan ilmu pengetahuan baru, Berbagai cara dilakukan oleh Kepala sekolah sebagai bentuk meningkatkan upaya untuk keberhasilan program tersebut seperti mensosialisasikan kepada guru.
Synthesis, Crystal Structure and DFT Study of 5-bromo-1-tosyl-1H-pyrrolo[2,3-b]pyridine
Authors: Cheng T. , Jing J. , Yang C.-Y. , Nie D.-N. , Yang K.-M. , Tang Shuai , Fu S.-X. , Zhang Ya-Nan , Zhou Z.-X.
Published: May 2023

The 7-azaindoles derivatives, as a major category of compounds, show a widespread of biological activities. The compound 5-bromo-1-tosyl-1H-pyrrolo[2,3-b]pyridine (1) was obtained by one-step substitution reaction. In the meantime, the structure of compound 1 was confirmed by 1H NMR, 13C NMR, FT-IR and X-ray diffraction. The optimized molecular crystal structure was preliminarily determined by using density functional theory (DFT) and compared with the X-ray diffraction values. In addition, more physical and chemical properties of compound 1 have been studied by further studying the molecular electrostatic potential and frontier molecular orbital of compound 1.
Use of longitudinal wave in non-destructive methods: approach to foundation and retaining elements
Authors: Silva Isabela , Faro Vítor
Published: May 2023

Non-destructive tests (NDT) are used to verify the length or integrity of elements embedded in soils or rocks. These elements can be piles in foundations or nails and tiebacks in retaining walls. NDTs differ by the types of waves, ways to generate and receive the signal and to analyze data. Tests using sonic wave do not require a pre-installed pipe or wire and they are based on acoustic impedance theory. Despite its dissemination on piles, the application in retaining elements is recent and requires more studies to increase knowledge about these methods. This paper aims to present studies of sonic wave methods in foundation and retaining elements, presenting results, similarities, and differences. Studies from different dates are presented with their relevance, considerations for the different types of elements tested, objectives and methodologies used, to evidence the variables involved within this solution. The sonic test in foundation is widespread and has a greater number of studies. Withing this paper, the variables that interfere in the results of these methods were observed: the velocity of propagation of the sonic wave, the soil stiffness, the location of wave generation and reception and the type of hammer used, evidencing the necessity of further studies, especially in retaining elements.
The Effect of the Transmission Impact of the U.S Interest Rate on Turkey’s CO2 Emissions: Evidence from Bootstrap ARDL
Authors: Samour Ahmed , Isiksal Aliya Zhakanova , Tursoy Turgut
Published: May 2023

The U.S. economy is the largest in the world; any change in the US economic policies exert a significant impact on global markets. The main purpose of this study is to investigate the spillover effect of the U.S interest rate on Turkey’s CO2 emission. The empirical results and the subsequent study discussion will be the first contribution of its kind to the environmental literature field. The study employs the newly developed bootstrap autoregressive distributed lag (ARDL) testing approach as proposed by McNown et al. (2018). The main findings of this study show that there is a negative and significant relationship between the U.S interest rate and Turkey’s CO2 emission. The results also provide significant evidence of the spillover effects of the U.S interest rate on CO2 emission in Turkey through the domestic interest rate, economic growth, and energy consumption channels. It is suggested that policymakers should design strategies such as sustained economic growth for responding to any external shocks, in particular, the U.S interest rate.
Ecological Modernization Theory (EMT): Antecedents and Successors
Authors: Julkovski Dulcimar José , Sehnem Simone , Bennet David , Leseure Michel
Published: May 2023

This study consolidates the state of academic research on the Ecological Modernization Theory (EMT). The EMT starts from a sociological perspective and enters into a series of political and economic factors that are considered crucial under the aegis of processes and practices. EM predicts that under political, economic, and technological conditions, competition among capitalists can be redirected to achieve eco-efficiency of pollution prevention. Based on a literature review from across 26 years, the study presents an overview of the evolution of the theme, background, and future perspectives. Using the databases Scopus, Web of Science, and Science Direct, a sample of 291 studies was mapped, which were read in full. Content analysis was conducted to abstract the current panorama of the theory of ecological modernization and to infer trends of the progress of the subject. The originality/value of this study is that we integrate diverse research perspectives into a comprehensive multidimensional structure of EM, with the purpose of analyzing the antecedents, artifacts associated with theory, method, types of studies developed, constructs explored together with the theory of EM and subcategories context, relevant stakeholders, technological innovations, and public policies. As future perspectives for studies, we suggest aligning EMT with circular economy, industry 4.0, and management information systems based on big data.
COMPORTAMENTO DE VARIEDADES DE MANDIOCA INDÚSTRIA EM AMBIENTE DE SEQUEIRO NA BACIA DO RIO PANDEIROS, MINAS GERAIS
Authors: De Oliveira Ednaldo Liberato , Cardoso Felipe Nunes , De Oliveira Nelson Licínio Campos , De macêdo Josué Antunes , Da Costa Cândido Alves
Published: May 2023

: A mandioca, Manihot esculenta, é cultivada em todas as regiões brasileiras, com uma grande diversidade de variedades, entretanto, para assegurar a rentabilidade da cultura, a escolha ideal do material genético é fator decisivo, levando em consideração as condições edafoclimáticas da localidade produtora. Este trabalho foi realizado com o objetivo de avaliar como se comportam as variedades de mandioca indústria em ambiente de sequeiro, na região da bacia do rio Pandeiros no Norte de Minas Gerais. O experimento foi conduzido na fazenda São Geraldo, de propriedade do Instituto Federal de Educação e Ciência e Tecnologia do Norte de Minas Gerais, Campus Januária, em condições de sequeiro. Foram avaliadas as características produtividade de raízes tuberosas, teor de amido, rendimento e produtividade de farinha. As variedades BRS Kiriris e BRS Mani Branca apresentaram as maiores médias de produtividade de raiz, teor de amido, rendimento e produtividade de farinha, podendo ser considerados variedades com alto potencial produtivo para farinha e fécula na região da bacia do rio Pandeiros, no Norte de Minas Gerais. A melhor época de colheita foi aos quatorze meses após o plantio, por propiciar a maior produtividade de farinha, associado aos maiores rendimentos de farinha, teor de amido e produtividade de raízes tuberosas.
DESENVOLVIMENTO DE UM SIMULADOR DE CHUVA PENDULAR PORTÁTIL
Authors: Grah Ponciano Vanessa de Fátima , Ponciano Isaac de Matos , Gama Luanne Martins de Siqueira , Silva Makcy Ramon Kened Souza
Published: May 2023

A erosão hídrica em sistemas de produção agrícola no Brasil é o principal fator capaz de tornar insustentáveis esses sistemas, já que seus impactos ambientais têm reflexos no aumento dos custos da produção. O trabalho teve como objetivo construir e avaliar um simulador de chuva pendular portátil de fácil manuseio e baixo custo para avaliação da erosão. O simulador de chuvas pendular foi construído utilizando os princípios de funcionamento do simulador descrito por Souza (2004), contudo foi desenvolvido um novo modelo de transmissão de movimento angular para movimento linear do bico aspersor. Utilizou-se um bico aspersor VeeJet 80.150, que oscilava 60 ciclos por minuto sobre a parcela. A avaliação se deu por meio da uniformidade da chuva precipitada do equipamento no interior da parcela, coletando-se a chuva simulada em pluviômetros distribuídos na parcela por um período de 2 minutos. Os Coeficientes de Uniformidade Estatístico obtidos nos testes do simulador de chuvas foram considerados adequados e indicam haver uma boa uniformidade de distribuição das gotas. Os dados obtidos a partir da avaliação possibilitaram concluir que o simulador construído atende aos quesitos básicos para servir de ferramenta para pesquisas científicas relacionadas à erosão hídrica. Dessa forma, o simulador de chuvas desenvolvido atende os requisitos técnicos estabelecido na literatura podendo ser utilizado em diversos trabalhos nas ciências agrárias e ambientais.
A COMPACTAÇÃO DO SOLO E OS EFEITOS NO CRESCIMENTO INICIAL DO MILHO
Authors: Almeida Murilo de Sousa , Cunha Maria Brenna Mendes , Oliveira Miriele Soares , Gomes Kessy Jhonis Silva , Paz Jose Abel Aguiar da Silva , Carneiro Maria Viviane Barbosa , Silvestre Filipe Eugênio Rodrigues
Published: May 2023

A compactação do solo determina, de certa maneira, as relações entre ar, água e temperatura, e estas influenciam praticamente em todas as fases do desenvolvimento vegetal. Nesse sentido, o objetivo do trabalho foi avaliar o efeito de diferentes níveis de compactação no crescimento inicial do milho. O experimento foi realizado na área experimental da Unidade de Produção de Mudas Auroras (UPMA), pertencente Universidade da Integração Internacional da Lusofonia Afro-Brasileira (UNILAB), Redenção, Ceará. O delineamento experimental utilizado foi o de blocos inteiramente casualizado, com cinco tratamentos (0, 25, 50, 75 e 100% de compactação) e cinco repetições totalizando 25 unidades experimentais. Essas unidades experimentais foram representadas por vasos de polipropileno com 17 cm de altura e volume de 6,5 dm3. Aos 40 dias após semeadura (DAS) avaliou-se altura de plantas em centímetros (AP), O número de folhas (NF), o diâmetro do colmo (DC), a matéria da parte aérea. (MSPA) e a massa seca das raízes (MSR). Os resultados obtidos foram submetidos à análise de variância e teste de regressão a 5% de probabilidade pelo programa ASSISTAT versão 7.7 beta. Os resultados corroboraram que o desenvolvimento da parte aérea, crescimento das raízes das plantas, número de folhas e matéria seca da parte área e das raízes do milho são prejudicados pela compactação do solo.
DESEMPENHO DE GENÓTIPOS DE BETERRABA DE MESA EM SISTEMA ORGÂNICO NO NORTE DE MINAS GERAIS
Authors: De Oliveira Nelson Licínio Campos , Melo Wisner Messias Mendes , Moreira Rodrigo Amato , De Oliveira Ednaldo Liberato
Published: May 2023

Objetivou-se com o presente trabalho avaliar o desempenho agronômico de diferentes genótipos de beterraba, sob cultivo orgânico no período de outono/inverno nas condições edafoclimáticas do Norte de Minas Gerais. Desta forma, o experimento foi realizado na Unidade de Agroecologia do Instituto Federal de Educação e Ciência e Tecnologia do Norte de Minas Gerais (IFNMG) – Campus Januária, em condições de campo em sistema orgânico de cultivo. Os tratamentos foram constituídos por sete genótipos de beterraba (Chata do Egito, Early Wonder Super Tall Top, Early Wonder Tall Top, Itapuã 202, Katrina, Maravilha e Híbrido Merlot), em delineamento experimental de blocos ao acaso com quatro repetições. Foram avaliados o número de folhas, área foliar, massas de matéria fresca e seca de limbo, massas de matéria fresca e seca do pecíolo, massas de matéria fresca e seca de raízes tuberosas, sólidos solúveis da raiz tuberosa e produtividade de raízes comerciais. O híbrido Merlot e a cultivar Chata do Egito apresentaram produtividades superiores em relação às demais cultivares. Híbrido Merlot por combinar maior produtividade e maior índice de colheita em relação a cultivar Chata do Egito é o mais recomendado para o cultivo nas estações de outono/inverno conduzidas em sistema orgânico nas condições edafoclimáticas do Norte de Minas Gerais.
FUNGITOXIDADE DO ÓLEO ESSENCIAL DE GUAÇATONGA, Casearia sylvestris, NO DESENVOLVIMENTO IN VITRO DE FUNGOS FITOPATOGÊNICOS E AVALIAÇÃO IN VIVO EM PLANTAS DE BETERRABA PARA O CONTROLE DE CERCOSPORIOSE
Authors: Boruch Letícia , Jordana Ben Tayná , Garcia Carla , Alvarenga dos Santos Leandro , Márcia Duarte Rios Faria Cacilda
Published: May 2023

Fitopatógenos interferem de forma negativa na produção e na qualidade final dos produtos agrícolas comercializados. O  trabalho tem como objetivo verificar o controle alternativo dos fungos Cercospora beticola sacc, Phytophthora infestans e Colletotrichum lindemuthianum, utilizando as doses 0,2; 0,4; 0,6; 0,8 µL mL-1 do óleo essencial de guaçatonga, em comparação a testemunha com somente água. Avaliou- se in vitro o potencial do óleo essencial de guaçatonga OEG (Casearia sylvestris) em comparação ao índice do crescimento micelial (IVCM), e in vivo a severidade da cercospora em plantas de beterraba, também se determinou o potencial do OEG em induzir mecanismo de resistência. Examinou-se a atividade da enzima peroxidase. Dessa forma, adicionou-se o óleo em placas de Petri para experimento in vitro e para in vivo pulverizou-se semanalmente o óleo sobre as plantas acondicionadas em casa de vegetação. Determinou-se o efeito direto do óleo  sobre os fungos e o controle de cercospora nas folhas de beterraba, e a atividade da enzima peroxidase. Verificou-se que o óleo não apresentou efeito direto sobre a C. beticola in vitro, mas sim sobre os outros dois fungos obteve redução sobre o IVCM, e ativou simultaneamente mecanismos de defesa sobre as plantas de beterraba. Assim, pode se dizer que o, OEG apresenta a capacidade de agir diretamente sobre os patógenos Phytophthora infestans, Colletotrichum lindemuthianum e induzir a resistência de plantas beterraba contra Cercospora beticola.
Mineralogical and geochemical identification of ferruginous mud used in obtaining “black dye”, coming from Mexico, Peru, Chile and Mali
Authors: López-Acevedo V. , López-Andrés S. , Arroyo X , Roquero A.
Published: May 2023

This paper studies the mud used by people of different cultures to decorate and dye fabrics black. The dye is obtained by combining tannins from different plants with the iron present in the sludge. After a complicated reaction, “ferric pyrogallate”, an insoluble black complex, is formed. Given the artisanal nature of the process, the muds involved have never been identified from a mineralogical and geochemical point of view, in order to evaluate their role in this reaction. On this occasion, samples from very diverse cultural areas have been analyzed and they have been found to be mixtures of clays and other minerals, including iron. The results support the hypothesis that the environmental conditions prevailing in the different mud deposits (bogs and swampy soils) are responsible for the present iron reaching the oxidation state required for this process to take place. En este trabajo se estudia el lodo utilizado por pueblos de diferentes culturas para estampar y teñir tejidos de negro. El tinte se obtiene por la combinación de taninos procedentes de diferentes plantas con el hierro presente en los lodos. La reacción que tiene lugar es complicada y culmina con la formación de “pirogalato férrico”, un complejo insoluble de color negro. Dado el carácter artesanal del proceso, los lodos involucrados nunca se han identificado desde un punto de Vista mineralógico \ geoquímico, con el fin de evaluar su papel en esta reacción. En esta ocasión se han analizado muestras procedentes de áreas culturales muy dispares y se ha comprobado que son mezclas de arcillas y otros minerales, algunos de ellos con hierro en su composición. Los resultados obtenidos apoyan la hipótesis de que las condiciones ambientales imperantes en los diferentes depósitos de lodo (cenagales y suelos pantanosos), son las responsables de que el hierro presente alcance el estado de oxidación requerido para que este proceso pueda tener lugar.
Presentación Dossier: Alain Badiou: una filosofía del acontecimiento para el siglo XXI
Authors: Abud Jaso Dr. Juan José , Reyes Camargo Dr. Raúl
Published: May 2023

La Filosofía nunca ha sido un ejercicio de pensamiento dogmático, y la obra de Alain Badiou no es la excepción, pues ya es sujeto de debates contemporáneos planteados por Mehdi Belhaj Kacem, Slavoj Žižek, Jacques Rancière, Barbara Cassin, Elizabeth Roudinesco. Los problemas filosóficos que distingue la obra de Badiou y el corpus de sus intérpretes, en su mayoría, surgen de los planteos hechos en El ser y el acontecimiento, donde se postula desde la teoría de conjuntos una ontología del ser en tanto que ser y una metaontología: el ser del acontecimiento. En este texto se escribe que a partir de un acontecimiento se genera un proceso de verdad del cual aparece un sujeto que soporta una verdad.
Analysis of the Development Needs for Interactive Web-Based E-book on Pressure Topic for Differentiated Science Learning
Authors: Ariastya Ribkah Melia , Astuti Indri , Enawaty Eny
Published: May 2023

This research aims to describe the needs analysis results conducted at SMP Negeri 19 Singkawang as the basis for developing web-based interactive e-book teaching materials on pressure for differentiated science learning. This study is a Research and Development study. The researcher employed a qualitative descriptive research method. Data collection techniques included non-test instruments such as questionnaires, interviews, observations, and documentation. Data analysis was conducted using a qualitative approach. The development of web-based interactive e-books utilized the 4D development model, consisting of four stages: define, design, develop, and disseminate. This study served as a preliminary study in the define stage, where the researcher ensured that the developed product would meet the needs of teachers and students. Based on the findings, students highly demanded web-based interactive e-book media for the topic of pressure. The researcher concluded that students require engaging, interactive teaching materials that can be easily accessed through their frequently used smartphones and contain diverse content with various media formats that cater to their learning styles. Teachers require interactive e-books to enhance the quality of science teaching on the topic of pressure. Differentiated science learning strategies integrated into interactive e-book are necessary for teachers to provide appropriate teaching materials and media that meet the student's learning needs. The availability of supporting facilities and adequate internet connection allows the utilization of web-based interactive e-books on the topic of pressure by students at SMP Negeri 19 Singkawang.
Student's Perception of Learning Media Based on Virtual Laboratory on Straight Motion Kinematics Materials
Authors: Pratiwi Maharani Rizky , Purwaningsih Sri , Lestari Neneng
Published: May 2023

This study aims to determine the feasibility of laboratory virtual mediaon straight motion kinematics using modelsproblem based learning  as well as knowing how students perceive when using the productthat have been developed are reviewed based on the feasibility of the content, graphics, appearance and language.The method used in this study is a quantitative research methodobtained from the results of assessments by media expert validators, material expert validators, and the results of student perception questionnaires regarding the product being developedwith a sample of 28 students. The sampling technique used was purposive sampling. The instruments used were media validation questionnaires, materials, and perception questionnaires. The data analysis used is descriptive statistics, in which the average result obtained from the five assessment indicators is 79.76% which indicates that the media is suitable for use and is greeted very positively by students who use it.
Pelatihan Pembuatan Kuis Interaktif Menggunakan Ispring Suite dan Kahoot Bagi Guru-Guru SMAN 2 Gerung Lombok Barat
Authors: Azmi Syahrul , Amrullah Amrullah , Baidowi Baidowi , Kurniati Nani , Kurniawan Eka
Published: May 2023

This community service activity is in the form of interactive quiz-making training using the Ispring and Kahoot platforms. This service activity aims to a) Provide an overview of the use of the Ispring suite and Kahoot! software applications. to create interactive quiz questions that can be used as an interesting and fun evaluation tool for students, and b) Provide training on how to create interactive quiz questions using the Ispring Suite and Kahoot! software applications. for teachers at SMAN 2 Gerung West Lombok. The method used is lectures to explain the material, followed by questions and answers and practice. The team also gave tests (pretest and posttest). From the results of the activity, a product is produced in the form of an interactive quiz made using the Ispring or Kahoot applications. In addition, there is an increase in teachers' understanding of the material provided. This can be seen from the percentage of correct answers in the pretest of 32.63%, and the results of the posttest showed the percentage of correct answers to be 64.67%. Based on the results of the activity, it can be concluded that this community service activity is felt to be very useful in increasing the knowledge and skills of teachers on how to make interesting interactive quizzes so as to increase student enthusiasm and interest when participating in learning evaluation activities
PELATIHAN DIVERSIFIKASI TOMAT MENJADI PRODUK OLAHAN SAUS TOMAT DI DESA MONTONG BAAN
Authors: Anjarwani Sri Endang , Wiguna Lalu Habib Satya , Roslinda Roslinda , Yuniarti Yuniarti
Published: May 2023

Montong Baan Village is one of 14 villages in Sikur District, East Lombok Regency, West Nusa Tenggara Province. This village is a division of East Suradadi Village, established on November 3, 1938. Most of the people in this village work as crops (tomatoes and chilies) farmers. However, the lack of awareness related to the processing of agricultural products makes the community only depend on the livelihoods of farmers, whereas if the agricultural products are processed, they can make a product with high selling value. Therefore, the purpose of the University of Mataram Thematic Desapreneur Community Service Program for the period December 2022 - February 2023 is to help people create businesses by utilizing tomatoes through outreach and training in making tomato sauce. The stages carried out during the training were mixing ingredients, cooking, packaging, and marketing. The results obtained from this tomato sauce making training are that the people in Montong Baan Village can produce tomato sauce products that have been packaged and labeled and are ready to be marketed. Apart from that, the training on making tomato sauce in Montong Baan Village will certainly open up business opportunities and improve the economy for the community.
Conexión venosa pulmonar anómala: hallazgo anatómico
Authors: Moreira Caio Cézar , Ferreira Gabriel Eduardo Acosta , Martins Gabriel Fernandes , Freitas REIS, Heleno de
Published: May 2023

Descritas pela primeira vez em 1739, as anormalidades na drenagem das veias pulmonares são devido a uma alteração temporária (do 27º ao 30º dia de gestação), quando os plexos venosos As veias pulmonares estão em conexão com as veias dos sistemas cardeal, umbilical e vitelino. Nesse ponto, essas conexões estão envolvidas e a drenagem venosa flui para o átrio. sai pela veia pulmonar comum. Através da discussão deste trabalho, apresentaremos uma variação anatômica de uma veia anômala, encontrada durante a dissecção. rotina. Esse achado anatômico, apesar de descrito na literatura, não é comum, que caracteriza sua relevância.
BOM JESUS DO PIAUÌ – BRASIL E SUAS FLUTUAÇÕES NAS AMPLITUDES TÉRMICAS MENSAL, ANUAL E DOS TRIMESTRES QUENTES E FRIOS
Authors: Medeiros Raimundo Mainar de , Holanda Romildo Morant de
Published: May 2023

A amplitude térmica é definida pela diferença entre os índices da temperatura máxima e mínima. Tem-se como objetivo estudar a variabilidade mensal da amplitude térmica do ar e de seus trimestres mais quente e frio do período de 1960-2018 para o município de Bom Jesus do Piauí visando o bem estar da população e a sobrevivência humana bem como referenciar os principais fatores que afetam o referido aumento térmico, além de fornecer informações para os setores energéticos, agropecuário, agronegócio, irrigação e para os tomadores de decisões municipal, estadual e federal em caso de eventos extremos. Utilizou-se dos dados mensais da amplitude térmica dos anos de 1960 a 2018 fornecido pelo Instituto Nacional de Meteorologia, os quais foram trabalhados estatisticamente. Este estudo pode ser ferramenta para planejamentos e ações que visem a melhor forma de gerenciar os índices térmicos a serem utilizados na agropecuária, saúde, no conforto térmico das cidades entre outras aplicações. Permanece a necessidade de estudos mais aprofundados sobre a distribuição térmica na região Nordeste do Brasil e em especial da região de Bom Jesus do Piauí, visando à identificação de seus padrões térmicos. A estação meteorológica encontra-se ilhada por edificações, vegetação densa e sofre influencia dos efeitos antrópicos dos moradores da região. Espera-se ter contribuído para informações aos agropecuários, agronegócios, cooperativas tomadores de decisões municipais, estaduais e federais, aos técnicos agrícolas e ao setor da saúde para uma melhor compreensão das variabilidades térmicas.
AVALIAÇÃO DA PRODUTIVIDADE DO CAFÉ, POLINIZADAS PELAS ABELHAS EM UM AGROECOSSISTEMA ANDINO VENEZUELANO
Authors: Chacón-Ortiz Andrés , Jaimes Marian Chacón , Laneti Gustavo Perruolo , Ostos Raúl Casanova
Published: May 2023

A maioria das plantas em floração precisam de animais para se reproduzir, e os animais recebem comida e proteção em troca. Essas relações são delicadas, e mantendo o equilíbrio dos ecossistemas, regulando a formação de frutos e sementes. Estudos têm demonstrado que o número e a qualidade dos frutos de café, aumentam na medida que o número de visitas de polinizadores à cultura acrescenta. Neste trabalho, foi proposto avaliar os efeitos da polinização por abelhas sobre a produção de Coffea arábica L. em plantações pertencentes ao INIA-Táchira, Venezuela. O lugar estava semeado com café variedade INIA 01 e foi dividido em três locais de trabalho. Foram coletadas 33 espécies das famílias Apidae, Colletidae e Megachilidae. A diversidade de abelhas associada ao local A "perto da floresta" foi maior do que a encontrada no local B e "café sob sombra" e local C "sem sombra". A autopolinização foi o tipo de reprodução com maior produção e desenvolvimento de frutos, no entanto, a polinização cruzada desempenhou um papel importante no percentual de sucesso do enchimento dos frutos quando as culturas estavam próximas à influência das florestas. O trabalho refletiu a importância de ter uma fonte polinizadora que leve a um melhor desempenho.
CARACTERIZAÇÃO FÍSICO-QUÍMICA DE CANA-DE-ÍNDIO (COSTUS sp.)
Authors: Rocha Laryssa Alencar da , Lima Francisca Jaqueline Ferreira de , Lima Marilene Santos de , Nascimento Matheus Matos do , Ming Lin Chau , Ferreira Almecina Balbino
Published: May 2023

O gênero Costus possui cerca de 120 a 150 espécies descritas no mundo. Pertencendo ao grupo das plantas alimentícias não-convencionais, tais plantas destacam-se pela rusticidade de cultivo, versatilidade de uso e elevados teores nutricionais comparados as espécies convencionais. O objetivo deste trabalho foi avaliar a composição físico-química da parte basal e apical da espécie. As análises foram realizadas na Unidade de Tecnologia de Alimentos – UTAL, localizada no Campus da Universidade Federal do Acre – UFAC, Campus de Rio Branco. As folhas e talos das diferentes partes da planta foram coletadas na área experimental do Laboratório de Pós-Graduação em Fitotecnia. Utilizou-se o delineamento inteiramente casualizado com 4 tratamentos e quatro repetições. Os tratamentos foram constituídos por: folha nova (FNP1, FNP2, FNP3, FPN4); folha velha (FVP1, FVP2, FVP3, FVP4); caule novo (CNP1, CNP2, CNP3, CPN4) e caule velho (CVP1, CVP2, CVP3, CVP 4). As variáveis avaliadas foram: proteína, umidade, cinzas, ácido ascórbico (vitamina C) e acidez total titulável (SST). Esta foram realizadas de acordo com métodos físico-químicos para análise de alimentos do instituto Adolfo Lutz. Houve diferença significativa (p<0,05) apenas para as variáveis proteína e resíduo mineral fixo (cinzas). As folhas jovens apresentam os maiores teores de proteína 2,5 g/100 g, de minerais fixos 1,47 g/100 g e 1,36 g/100 g para folhas velhas, respectivamente. A espécie Costus sp. apresenta potencial para utilização na alimentação humana, considerando seus teores de minerais, podendo ser uma alternativa para complementar a dieta nutricional da população.