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All Journal Majalah Pembelajaran Geografi Jurnal Kesehatan Madani Medika Jurnal Kesehatan Primer Al-Afaq: Jurnal Ilmu Falak dan Astronomi Jurnal Pembelajaran Fisika JUSTER: Jurnal Sains dan Terapan Indonesian Journal of Contemporary Multidisciplinary Research Pariwisata Budaya: Jurnal Ilmiah Pariwisata Agama dan Budaya Experimental Student Experiences JK Jurnal Kesehatan Scientica: Jurnal Ilmiah Sains dan Teknologi Kohesi: Jurnal Sains dan Teknologi Geosfera Indonesia Indonesian Journal of Science and Education Jurnal Kesehatan Primer
Yushardi
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Pengaruh Paparan Medan Magnet Elf Dengan Intensitas 300 µT Terhadap pH Tape Ketan Mentah Stitiningsih, Eka Ayu Diana; Azizah, Najwa Nur; Jamilah, Nur; Laksono, Najwa Syahidah Arsya; Hidayah, Robiatul; Timur, Lintang; Ni’mah, Simatun; Pamurti, Diah Arum; Yushardi
JUSTER : Jurnal Sains dan Terapan Vol. 3 No. 3 (2024): JUSTER: Jurnal Sains dan Terapan
Publisher : Jompa Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57218/juster.v3i3.1289

Abstract

Penelitian ini bertujuan untuk menganalisis pengaruh paparan medan magnet Extremely Low Frequency (ELF) dengan intensitas 300 µT terhadap perubahan pH pada tape ketan mentah. Medan magnet ELF diketahui dapat mempengaruhi proses fermentasi bahan pangan, yang melibatkan mikroorganisme yang rentan terhadap pengaruh faktor eksternal. Penelitian ini membagi tape ketan mentah menjadi dua kelompok, yaitu kelompok kontrol yang dibiarkan pada suhu ruang tanpa paparan medan magnet, serta kelompok eksperimen yang dipaparkan dengan medan magnet ELF. Pengukuran pH dilakukan setelah paparan untuk menganalisis perubahan yang terjadi. Hasil penelitian menunjukkan bahwa rata-rata pH tape ketan mentah kelompok eksperimen setelah terpapar medan magnet ELF mengalami perubahan menjadi 2,32, sementara pH tape ketan mentah kelompok kontrol yaitu 3,16. Perubahan pH tape ketan mentah pada kelompok eksperimen menunjukkan adanya percepatan proses fermentasi yang dapat dipengaruhi oleh paparan medan magnet ELF terhadap mikroorganisme dalam tape ketan. Temuan ini memberikan wawasan mengenai potensi medan magnet ELF dalam memodifikasi proses fermentasi bahan pangan dan membuka peluang untuk penelitian lebih lanjut untuk mengembangkan teknologi yang dapat meningkatkan kualitas produk fermentasi.
Pengaruh Radiasi Medan Elektromagnet ELF Terhadap Intensitas Kematangan Tape Singkong Mentah Fanisya Naisilla; Andini Aszahra Putri; Elga Anggunia; Febtiana Ines Valerina; Prifki Andreansyah; Anindia Rimadhani; Roifatul Masruroh; Sudarti; Yushardi; Dyah Arum Arimurti; Habibah Khusna Baihaqi
JUSTER : Jurnal Sains dan Terapan Vol. 3 No. 3 (2024): JUSTER: Jurnal Sains dan Terapan
Publisher : Jompa Research and Development

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57218/juster.v3i3.1302

Abstract

Medan Extremely Low Frequency (ELF) adalah spektrum gelombang elektromagnetik dengan frekuensi di bawah 300 Hz, terdiri dari komponen medan listrik dan medan magnet. Penelitian ini bertujuan menguji pengaruh medan ELF terhadap proses kematangan bahan pangan, khususnya tape singkong, yang difermentasi menggunakan ragi. Eksperimen dilakukan dengan memaparkan tape singkong mentah pada medan magnet ELF berintensitas 300 μT selama ±20 menit. Analisis meliputi pengukuran pH, massa jenis, serta pengamatan aroma, tekstur, dan rasa (manis, asam, pahit) sebelum dan setelah paparan. Hasil penelitian menunjukkan bahwa medan ELF mempengaruhi kecepatan fermentasi dan karakteristik fisik tape, seperti tekstur yang lebih lembut, warna, dan daya tahan terhadap kelembapan serta suhu. Tape yang terpapar medan ELF memiliki perubahan signifikan dibandingkan tape tanpa paparan, seperti fermentasi yang lebih cepat dan ketahanan lebih baik terhadap pembusukan. Perubahan ini diduga disebabkan oleh modifikasi struktur molekul bahan akibat interaksi dengan medan magnet. Temuan ini menunjukkan potensi medan ELF sebagai metode non-termal untuk mempercepat pematangan bahan pangan, meningkatkan efisiensi pengolahan pangan di industri. Teknologi ini dapat diterapkan untuk mengoptimalkan kualitas produk, termasuk tekstur, rasa, dan aroma tape singkong.
Kajian Penentuan Arah Kiblat Menggunakan Arah Planet Venus Siti Anisa Hidayati, Siti Anisa Hidayati; Yushardi
AL - AFAQ : Jurnal Ilmu Falak dan Astronomi Vol. 5 No. 1 (2023): Juni 2023
Publisher : Universitas Islam Negeri Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/afaq.v5i1.6338

Abstract

The purpose of this research is to find out how to determine the Qibla direction of aplace using the position of the planet Venus and how to prove the calculation of the position ofVenus in the sky. This research is motivated by the question of how to determine the Qibladirection at night if the conditions do not have sophisticated technological equipment. Thisresearch is a descriptive analysis research where all the data is collected through observationtechniques. The research results show that the position of the planet Venus can be used as analternative reference to determine the Qibla direction. Based on observations using astronomicalcalculations, it is known that Venus looks very luminous on the western horizon when the sky isclear and the sun has set perfectly. We can also see one of the planets Venus at dawn on theeastern horizon, so Venus is also often referred to as the morning star. Data on the position of theplanet Venus such as the altitude and azimuth of the planet Venus somewhere are then calculatedusing the horizon coordinate system. The data is used as a theodolite reference. Furthermore, toobtain the actual Qibla direction, the theodolite lens is directed to the position of the planet Venusand rotated clockwise (same as the difference in the azimuth angle with the Qibla azimuth ofVenus). Thus, the position of the planet Venus can be used as an alternative to determine the Qibladirection.
Pengaruh Model Challenge Based Learning (CBL) Terhadap Berpikir Kreatif Siswa Geografi SMA Negara, Athalla Verdiansyah Prawira; Yushardi; Kurnianto, Fahmi Arif; Astutik, Sri; Susiati, Ana
MAJALAH PEMBELAJARAN GEOGRAFI Vol. 7 No. 2 (2024): Majalah Pembelajaran Geografi
Publisher : Program Studi Pendidikan Geografi, Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/pgeo.v7i2.48010

Abstract

Dunia pada abad ke-21 saat ini berada di era industri 4.0 dimana siswa harus dibekali diri dengan kemampuan pemecahan masalah dan kemampuan berkomunikasi. Pembelajaran geografi hingga saat ini masih cenderung pada ranah kognitif saja, pemanfaatan media pembelajaran variatif yang belum dimaksimalkan oleh guru, kegiatan belajar mengajar yang hanya menjalankan objek materi saja serta model pembelajaran yang dimanfaatkan tidak membimbing mengakibatkan kemampuan berpikir kreatif siswa SMA masih rendah. Tuujuan penelitian ini untuk mengkaji pengaruh model Challenge Based Learning (CBL) terhadap berpikir kreatif siswa geografi SMA. Metode yang dipilih ialah penelitian eksperimen semu serta desain penelitian post-test only control design. Hasil penelitian menunjukkan kelas eksperimen yang mendapatkan perlakuan model pembelajaran Challenge Based Learning (CBL) memiliki nilai rata-rata post-test keterampilan berpikir kreatif yang lebih tinggi daripada kelas kontrol. Kelas eksperimen memiliki nilai rata-rata 87 sedangkan kelas kontrol 81,50. Berdasarkan nilai Independent Sample T-test yang kurang dari (>) 0,05 dengan kesimpulan penerapan model pembelajaran Challenge Based Learning (CBL) berpengaruh signifikan terhadap keterampilan berpikir kreatif siswa SMA.
An Analysis Identification of Physics Student Critical Thinking and Creative Thinking Skill in Physics Learning Sri Handono Budi Prastowo; nuraini, Lailatul; Yushardi; Bambang Supriadi; Trapsilo Prihandono; Riska Uswatun Khasanah
JURNAL PEMBELAJARAN FISIKA Vol. 14 No. 1 (2025): Jurnal Pembelajaran Fisika (JPF) Universitas Jember
Publisher : Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/jpf.v14i1.53686

Abstract

The quality education depends on quality of learning process. So, it was needed to know how the student initial ability. This research aimed to describe the physics students critical thinking skill and creative thinking skill about physics concept. The method was descriptive research. The research respondents were physics students of 37 person at Class A, it consists of 5 male students and of 32 female students and physics student of 35 person at Class B, it consists of 5 male students and of 30 female students which have been take thermodynamics and modern physics on odd semester, academic year 2018/2019. The research data which was collected by using test, observation and documentation. The research data was analysed by using indicator percentage and descriptive. The result showed that average of critical thinking skill was 78,65. Interpretating around 6,8 Analysing around 8,17, evaluating around 8,97, Inferensi around 8,41 and explanation ability around 6,94. The average of creative thinking skill was 78,92. Creative thinking skill was fluency was 8,09, flexibility 8,4, originality 7,58 and elaboration 7,45. Therefore, an effort needed to improve physics student critical and creative thinking skill. It can be done by using some interactive model, media and teaching material in physics learning. Beside that needed alternative solution for development learning resource on learning physics in Higher Education with another local potential context.
School-Based Disaster Education Model in Lumajang, Indonesia Yushardi; Suharso, Pudjo; Zulianto, Mukhamad; Laili, Alfin Nur; Sedyati, Retna Ngesti
Geosfera Indonesia Vol. 10 No. 2 (2025): GEOSFERA INDONESIA
Publisher : Department of Geography Education, University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/geosi.v10i2.52600

Abstract

Disaster management is mostly done through a technological approach. In addition to the technological approach, disaster management needs to use a cultural, non-technological approach. This study focuses on school-based disaster education as one of the cultural approaches in the area affected by the eruption of Mount Semeru, Lumajang. The purpose of this study was to analyze the implementation of the disaster education model for high school level based on Disaster Safe Schools in the area affected by the eruption of Mount Semeru, Lumajang. The research method used is descriptive statistics to see students' perceptions of 3 aspects of disaster-safe schools consisting of the availability of disaster-safe school facilities and infrastructure, disaster management for disaster-safe schools and disaster risk reduction education for disaster-safe schools. Through Focus Group Discussion (FGD) of social studies teachers, the importance of implementing school-based disaster education was analyzed which includes three aspects of disaster-safe schools. The results in the first aspect regarding the availability of disaster-safe school facilities and infrastructure, on average students have adequate knowledge about disaster-safe school facilities and infrastructure. In the second aspect of disaster management for disaster-safe schools, students view that schools have not fully implemented disaster management and in the third aspect, namely disaster risk reduction education for disaster safety, students consider that it has not been carried out optimally. Meanwhile, for the implementation of disaster education, they prefer a curricular education model by integrating it into relevant social studies subjects. The results of the FGD with teachers revealed that in the first aspect, the four schools did not have adequate facilities and infrastructure. In the second aspect, only 2 schools carried out adequate disaster management, the other two schools were not optimal. In the third aspect of disaster risk reduction education, teachers chose to integrate it into relevant subjects. The conclusion of this study reveals that the school-based disaster education model has not been implemented by all schools in the areas affected by the eruption of Mount Semeru.
String Tension in Traditional Kite Games as a Physics E-Supplement Design Fitrie Rahayu, Afira; Lesmono, Albertus Djoko; Yushardi
Indonesian Journal of Science and Education Vol. 9 No. 1 (2025): Indonesian Journal of Science and Education
Publisher : Universitas Tidar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31002/ijose.v9i1.374

Abstract

Physics studies the meaning of how a phenomenon can occur, both natural phenomena, human activities, and other living things. The traditional kite game is one of the human activities that includes the concept of physics, one of which is the tension of string. This study examines how tension in the string occurs in the kite string and the effects of several variables such as differences in the length of the string, the surface area of ​​the kite, and the angle of the puddles on the value of the tension in the string as a descriptive description of the concept of string tension. The method used is a qualitative method with a content analysis approach with stages of unitizing, selecting, recording, reducing, inferring, and narrating. String tension occurs when a lifting force that affects kite also affects the thread so that it is also pulled up and because the thread is extended to a certain length, the tension in the string occurs. The value of string tension will be greater as the length of the thread and the surface area of ​​the kite increase. However, the value of the tension in the rope will decrease with increasing the angle of the swivel used.
Application of Scaffolding-based Learning Media PhET Simulation in Improving Student Learning Outcomes at SMA Negeri Ambulu Khoirul Anwar; Laily Ramadhanty; Yushardi
Experimental Student Experiences Vol. 2 No. 2 (2023): April
Publisher : LPPM Institut Studi Islam Sunan Doe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58330/ese.v1i4.196

Abstract

Computergsimulation is an alternative and effective solution in understanding physics concepts that are difficult to describe through laboratory experiments. One of the platforms that provide experiments in the form of simulations is a virtual laboratory. One of the virtual laboratory applications is PhET Simulation. In this study, based on research on the application of virtual lab-based learning media PhET Simulation for students in class X-6 SMA Negeri Ambulu on the topic of Global Warming. This study uses two parameters, namely the experimental class and the control class. The data of this study were obtained from the results of the pretest and posttest using the Learners' Worksheet which was tested using normalized gain. Based on the research that has been done, the results of the normalized gain value of the experimental class are 0.64. While the control class normalized gain value is 0.14. From this N-gain value it can be concluded that student learning in experimental classes with the help of virtual lab PhET Simulation can increase more significantly than student learning in control classes that do not use virtual lab PhET Simulation.
Utilizing Plastic Waste with Ecobricks: Creative Solutions for A Healthy and Waste-Free Life Nasabella, Nazwa; Yushardi; Sudarti
Indonesian Journal of Contemporary Multidisciplinary Research Vol. 3 No. 1 (2024): January, 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/modern.v3i1.7129

Abstract

Indonesia ranks second as the largest producer of plastic waste in the world. Plastic waste takes about 1000 years to decompose. Cleaning up plastic waste is very difficult, because plastic waste has non-porous polymer properties, plastic can also cause temperatures to increase day by day. Plastic waste has a negative impact on the environment, such as environmental pollution due to the accumulation of waste. Anticipatory and preventive actions are needed to overcome this problem. The purpose of this research is to increase public awareness of the ecobrick method to utilize waste as an environmentally friendly material that has economic value. The research method used is a systematic literature review method, or called Systematic Literature Review (SLR) with results using an online article database
Pengaruh paparan medan elektromagnetik extremely low frequency (ELF) terhadap kadar gula darah mencit Balb/C Setiani, Rista; Sudarti; Yushardi
JURNAL KESEHATAN PRIMER Vol 9 No 1 (2024): JKP (Jurnal Kesehatan Primer)
Publisher : Poltekkes Kemenkes Kupang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31965/jkp.v9i1.1433

Abstract

Latar belakang: Penderita diabetes yang meningkat menjadi perhatian global karena berhubungan dengan penyakit metabolisme. Kadar gula darah menjadi parameter penting bagi evaluasi kesehatan, khusunya diabetes. Medan magnet ELF diduga mampu mengontrol kadar gula darah yang tinggi. Tujuan: Penelitian ini bertujuan untuk mengetahui apakah terdapat pengaruh signifikan antara kadar gula darah mencit yang terpapar medan magnet ELF dengan yang tidak terpapar. Metode: Metode penelitian yang digunakan adalah eksperimen laboratorium. Sampel penelitian yakni mencit jantan berumur 23-25 hari dengan berat badan 15-20 gram sebanyak 21 ekor. Sampel dibagi menjadi tiga kelompok, yang masing-masing kelompok berjumlah 7 ekor mencit, yakni kelompok kontrol, kelompok eksperimen 500 μT dan eksperimen 1000 μT. Durasi pemaparan yakni 3 jam/hari selama 30 hari.  Hasil:  Analisis data dengan menggunakan Uji One Way Anova menunjukkan nilai signifikasi sebesar 0,043<0,05 yang menunjukkan bahwa terdapat pengaruh yang signifikan antara hasil kadar gula darah mencit yang terpapar medan magnet ELF dengan yang tidak terpapar. Perbedaan signifikan terdapat pada perbandingan antara kelompok kontrol dengan kelompok eksperimen 1000 μT.
Co-Authors Ainiyatun Nadhifah Albertus Djoko Lesmono, Albertus Djoko Ana Susiati, Ana Andini Aszahra Putri Anindia Rimadhani Azizah, Najwa Nur Bambang Supriadi Dyah Arum Arimurti Elga Anggunia Fanisya Naisilla Febtiana Ines Valerina fida, nurul aini afida Fitrie Rahayu, Afira Habibah Khusna Baihaqi Haikal Oke Wicaksono Hidayah, Robiatul Jamilah, Nur KHOIRUL ANWAR Kurnianto, Fahmi Arif Lailatul Nuraini Laili, Alfin Nur Laily Ramadhanty Laksono, Najwa Syahidah Arsya Mukhamad Zulianto Nasabella, Nazwa Negara, Athalla Verdiansyah Prawira Ni’mah, Simatun Pamurti, Diah Arum Prastowo, Sri Handono Budi Prifki Andreansyah Pudjo Suharso Putri Wihatma Andianti Putri, Cindy Asa Retna Ngesti Sedyati, Retna Ngesti Riska Uswatun Khasanah Roifatul Masruroh Setiani, Rista Siti Anisa Hidayati, Siti Anisa Hidayati SRI ASTUTIK Stitiningsih, Eka Ayu Diana Sudarti Sudarti Sudarti Timur, Lintang Trapsilo Prihandono Wulansari, Rania