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All Journal Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Riset dan Kajian Pendidikan Fisika Jurnal Pendidikan Fisika Indonesia JURNAL FISIKA Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran Emitor: Jurnal Teknik Elektro Journal of Natural Sciences and Mathematics Research JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Jurnal Penelitian Sains EnviroScienteae JRST (Jurnal Riset Sains dan Teknologi) Jurnal Pengelolaan Laboratorium Pendidikan Jurnal Pendidikan Fisika dan Teknologi UPEJ Unnes Physics Education Journal Jurnal Fisika : Fisika Sains dan Aplikasinya Jurnal Teori dan Aplikasi Fisika Jurnal Inovasi Teknik Kimia Physics Education Research Journal Jurnal Penelitian Fisika dan Terapannya (JUPITER)

Upik Nurbaiti

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Author-ID : 334307

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics

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MAGNETIC PROPERTIES OF SUSPENDED OF POLLUTED HEAVY METAL SEDIMENTS FROM SEMARANG RIVERS Nurbaiti, Upik
Jurnal Pendidikan Fisika Indonesia Vol 7, No 2 (2011)
Publisher : Jurusan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Sifat magnetik, dalam bentuk kerentanan magnetik, tergantung pada frekuensi kerentanan (CFD) dan magnetisasi remanenisotermal (IRM) diukur pada nilai sampel yang terbuat dari sedimen tersuspensi dari Semarang sungai terdekat, Jawa Tengah.Semarang adalah salah satu kota besar di Indonesia, dimana sistem sungai yang sangat mungkin terkontaminasi oleh kegiatanantropogenik. Tujuan dari penelitian ini adalah untuk mengidentifikasi adanya logam berat dalam sedimen yang akan menentukankesesuaian sedimen untuk studi lanjut magnetik lingkungan. Hasil menunjukkan bahwa kerentanan magnet bervariasi 58-358510-8 m3/kg, sementara kerentanan tergantung pada frekuensi kurang dari 3% menunjukkan dominasi mineral feromagnetik. IRManalisis menunjukkan bahwa semua sampel jenuh dalam medan magnet kurang dari 200 mT menunjukkan mineral yang dominanadalah magnetit (Fe3O4). Membandingkan pengukuran magnetik dan analisis kimia, kami menemukan korelasi yang baik antarasuseptibilitas magnetik dan konsentrasi Fe, Mn, Co, dan Ti.ÃÂ Magnetic properties, in the form of magnetic susceptibility ÃÂ©, frequency-dependent susceptibility (cfd), and isothermal remanentmagnetization (IRM) were measured on scores of samples made of suspended sediments from rivers nearby Semarang, CentralJava. Semarang is one the major cities in Indonesia, where the river systems are very likely to be contaminated by anthropogenicactivities. The objective of this study is to identify the presence of heavy metals in the sediments that will determine the suitability ofthese sediments for further environmental magnetic study. The results show that magnetic susceptibility varies from 58 to 3585 10-8 m3/kg, while the frequency-dependent susceptibility is less than 3% indicating the predominance of ferromagnetic minerals. IRManalysis shows that all samples saturated in magnetic field of less than 200 mT suggesting the predominant mineral is magnetite(Fe3O4). Comparing magnetic measurements and chemical analyses, we found good correlation between magnetic susceptibilityand concentration of Fe, Mn, Co, and Ti.Keywords: magnetic susceptibility; heavy metals; river sediments; Semarang

POTENSI SEKAM PADI DAN JERAMI SEBAGAI ALTERNATIF MATERIAL AKUSTIK Rohim, Ahmad Minanur; Fianti, Fianti; Nurbaiti, Upik
Physics Education Research Journal Vol 2, No 1 (2020)
Publisher : Faculty of Science and Education, UIN Walisongo Semarang

Technology that is increasingly developing produces equipments in the form of information, communication, production, transportation and entertainment facilities. Most of the equipments produce noises. Noise can be reduced by using acoustic dampers. This study aims to determine the potential for sound absorption from rice husks and straw as natural acoustic materials. Materials used include rice husks, rice straw, and resin. 12 cylindrical samples were made. Samples that have been made are tested using a sound absorption measuring instrument that is the impedance tube to measure the value of the sample sound absorption coefficient. The test results show the value of the sound absorption coefficient (?) can be influenced by the thickness. At a frequency of 500 Hz the value of the sound absorption coefficient (?) for each sample is 0.034dB; 0.030dB; 0.030dB; 0.027dB; 0.026dB; 0.027dB; 0.025dB; 0.025dB; 0.025dB; 0.024dB; 0.024dB; 0.023dB; 0.023dB. The sample material is good in research on materials 1 and 2 which have a sound absorption of 0.034 dB and 0.030 dB.

KOMPETENSI GURU PAUD DALAM MEMBUAT ALAT BERMAIN SAINS DARI LIMBAH Yulianti, Dwi; H, S.S. Dewanti; Nurbaiti, Upik
Rekayasa : Jurnal Penerapan Teknologi dan Pembelajaran Vol 11, No 2 (2013): Desember 2013
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/rekayasa.v11i2.10316

Kegiatan pengabdian masyarakat ini bertujuan meningkatkan kompetensi guru PAUD dalam alat bermain sains (ABS) dari barang-barang habis pakai atau limbah. Metode yang diterapkan berupa pelatihan dan workshop yang meliputi kuliah, praktek membuat alat dan peer teaching. ABS yang berhasil dibuat diantaranya tikar warna, pengukuran, menimbang, menakar, magnet, bunyi, pncampuran warna, gravitasi, telepon dari gelas plastik. Setelah kegiatan berlangsung terjadi peningkatan jumlah alat pada masing-masing sekolah. Terjadi pula peningkatan kompetensi guru dalam membuat alat bermain sains. Dari hasil uji coba melalui kegiatan per teaching, hasil belajar kognitif, afektif dan psikomotorik siswa meningkat secara signifikan.

Pengaruh Jumlah Komputer terhadap Tingkat Radiasi Elektromagnetik dan Dampak Kesehatan Manusia dalam Lingkungan Teradiasi Hermawan, Mohamad Arif; Nurbaiti, Upik; Yulianti, Ian
Emitor: Jurnal Teknik Elektro Vol 21, No 1: Maret 2021
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v21i1.13001

Perkembangan teknologi membuat banyak perubahan dalam berbagai bidang dan sektor aktivitas manusia. Penggunaan teknologi seperti komputer yang berlebihan dapat menyebabkan masalah kesehatan yang ditimbulkan karena pada komputer selain menampilkan gambar dan teks pada monitor komputer yang sedang digunakan juga mengeluarkan radiasi dan gelombang elektromagnetik yang tidak dapat dideteksi oleh indra mata. Penelitian ini bertujuan untuk mengetahui pengaruh jumlah komputer terhadap tingkat radiasi elektromagnetik dan dampak Kesehatan. Hasil penelitian tingkat radiasi elektromagnetik yang ditimbulkan oleh beberapa jumlah komputer menunjukkan radiasi elektromagnetik sebesar 0.037 mT sampai 0,051 mT. Tingkat radiasi warung internet di desa Jatibarang dengan jumlah komputer 7 unit masih tergolong aman untuk manusia atau pengunjung warung internet.

Berpikir Kreatif dan analisis Peserta Didik Melalui Model Pembelajaran Problem Posing ditinjau dari Skimming and Mind Mapping Gelombang Mekanik Febriani, Marosyana Ayu; Ellianawati, Ellianawati; Wahyuni, Siti; Nurbaiti, Upik
UPEJ Unnes Physics Education Journal Vol 10 No 1 (2021)
Publisher : UPEJ Unnes Physics Education Journal

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/upej.v10i1.46652

Creative and analyzing thingking is a competence that students need in studying physics on the subject of mechanical waves by developing ideas with the result that they can be analyzed through examples of everyday life. The competence of creative thinking and analyzing of class XI students in SMA Negeri 1 Dempet, Demak Regency when studying physics is less optimal and feels bored faster. This is because students still depend on the formulas used without knowing the concept, and they are passive in participating in learning activities by only paying attention to the teacher's explanation. Learning that is suitable for developing creative thinking and analytical skills is to use the Problem Posing learning model in terms of skimming and mind mapping, with the aim of research to determine the effectiveness and describe the competence to think creatively and analyze. This study used a mixed methods and the sample was selected through purposive sampling technique so that the experimental class and control class were obtained. In the experimental class, the treatment was given to the Problem Posing learning model in terms of skimming and mind mapping, while the control class was given treatment of the Problem Based Learning learning model. The results showed that the more students follow the learning using Problem Posing through skimming and mind mapping techniques, the better the final competence test results for creative thinking and analyzing. This is shown based on triangulation in each category of skimming and mind mapping observations with the final ability of creative thinking and analysis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/rekayasa.v11i2.10316

Application of Teaching and Quiz Material Media Towards ICT Literacy and Student Learning Results Gita Ayu Permatasari; Sutikno Sutikno; Upik Nurbaiti
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol 4 No 1 (2020): JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) - May 2020
Publisher : Program Studi Pendidikan Fisika STKIP Nurul Huda

The objectives of this research aims to identifying the impact of online learning and quiz that actually drive better results for ICT Literacyfor physics and student exam results. We are doing this observation with 40 students at SMK Ar-Rahman Watusalam with the sampling group method. We are using questionnaire to evalute the authentic situation of ICT Literacy and the exam results of students before we are using online learning and quiz. The that online learning and quiz make better results for ICT Literacy and student exam results, because the condition of students' physics test scores after the application of online interactive quizzes which reached KKM (Minimum completeness criteria), which reached 75 students out of 40 with a percentage of 65% of students.

Uji Kadar CO, CO2 dan HC pada Pembakaran Rokok Konvensional tanpa Pengaruh Udara Luar dengan Outomotive Emission Analyzer Ika Vidiasari Aristawati; Upik Nurbaiti; Fianti Fianti
Jurnal Penelitian Sains Vol 23, No 2 (2021)
Publisher : Faculty of Mathtmatics and Natural Sciences

Jenis penelitian merupakan penelitian ekperimen dengan tujuan untuk mengetahui kadar CO, CO2 dan HC berbagai jenis rokok tanpa pengaruh udara dari luar. Penelitian dilakukan dengan sampel rokok sebanyak 4 jenis rokok. Adapun jenis rokok yang digunakan rokok putihan dengan kadar nikotin 1 mg dan kadar TAR 13 mg, rokok kretek dengan kadar nikotin 2,3 mg nikotin dan kadar TAR 39 mg dan rokok cerutu dengan kadar nikotin 0,8 mg dan kadar TAR 12 mg sedangkan untuk rokok klobot tidak tertulis kadar nikotin dan kadar TARnya dan alat untuk pengukuran automotive emission analyzer. Hasil penelitian sebagai berikut: rata-rata kadar CO, 8300 ppm pada rokok putihan, 10.700 ppm pada rokok cerutu, 10.100 ppm pada rokok klobot dan 7.367 ppm pada rokok kretek dan rata-rata kadar CO2, 20.000 ppm pada rokok putihan, 11.000 ppm pada rokok cerutu, 31.667 pada rokok klobot dan 16.333 ppm pada rokok kretek sedangkan kadar CO yang tertinggi dari pengukuran terdapat pada rokok cerutu dengan 10.700 ppm dan kadar CO2 yang tertinggi pada rokok klobot 31.667 ppm. Kadar Hidrokarbon yang tertinggi pada jenis rokok klobot dengan 522 ppm.

Aplikasi Styrofoam Sebagai Absorpsi Bunyi Allif Silfiyana Rohman; Agus Yulianto; Upik Nurbaiti
Jurnal Teori dan Aplikasi Fisika Vol 10, No 1 (2022): Jurnal Teori dan Aplikasi Fisika
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtaf.v10i1.2817

This study aims to determine the level of sound attenuation of Styrofoam material. This research is using a noise meter application Decibel X: dB Sound Level Meter and a sound generator as a sound source. Then Styrofoam as an acoustic material with a thickness of 1 cm; 1.5 cm; 2 cm; 2.5 cm ; 3 cm; 3.5 cm and 4 cm. The average absorption coefficient obtained in this study with a material thickness of 1 cm is 0.023. Then the average absorption coefficient at a thickness of 1.5 cm is 0.031. While the average absorption coefficient at a material thickness of 2 cm is 0.040. Furthermore, the average sound absorption coefficient at a thickness of 2.5 cm and 3 cm has the same value, namely 0.039. Then, the average sound absorption coefficient at a thickness of 3.5 cm and 4 cm also has the same value, which is 0.038. Based on the research that has been done, it can be concluded that sound absorption at frequencies below 1000 Hz occurs significant sound absorption. At frequencies of 200 Hz, 400 Hz, 600 Hz and 800 Hz, the average sound absorption increases from 1 cm to 3.5 cm of Styrofoam thickness. While the thickness of Styrofoam 4 cm on average did not show a significant increase in sound absorption. Styrofoam thickness of 4 cm can effectively absorb sound at a frequency of 1000 Hz only.

Pengaruh penggunaan styrofoam sebagai peredam panas pada atap terhadap suhu ruang Mutia Hariza Lubis; Upik Nurbaiti; Agus Yulianto
Jurnal Riset dan Kajian Pendidikan Fisika Vol 8, No 2 (2021): Oktober 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/jrkpf.v8i2.21187

Abstrak. Penggunaan alumunium sebagai atap banyak digunakan, namun menyebabkan suhu ruang menjadi panas karena konduktivitas termalnya yang tinggi. Penelitian ini bertujuan untuk menganalisis pengaruh styrofoam sebagai peredam panas pada atap terhadap suhu ruang. Metode penelitian berupa eksperimen dengan variasi ketebalan styrofoam 1,5 cm dan 3,0 cm. Bentuk atap berupa setengah pelana dan berorientasi ke arah utara. Hasil penelitian diperoleh bahwa rata-rata suhu bagian atas atap dari tiga miniatur rumah jauh lebih tinggi dibandingkan dengan suhu bagian bawah atap dan lebih tinggi dibandingkan dengan suhu ruang. Untuk suhu ruang diantara tiga miniatur rumah dengan perlakuan yang berbeda diperoleh urutan suhu ruang paling tinggi ke suhu ruang paling rendah adalah miniatur rumah tanpa menggunakan styrofoam, menggunakan styrofoam 1,5 cm, dan dengan styrofoam 3 cm. Dari hasil yang diperoleh, dapat disimpulkan bahwa penggunaan styrofoam berpengaruh terhadap suhu ruang dan efektif untuk menurunkan suhu ruang. Selain itu, semakin tebal styrofoam yang digunakan, maka semakin banyak panas yang diredam.Kata kunci: styrofoam, suhu, peredam Abstract. Aluminum is widely used as a roof, but it causes the room temperature to become hot due to its high thermal conductivity. This study aims to analyze the effect of styrofoam as a heat sink on the roof to room temperature. The research method is an experiment with variations in the thickness of styrofoam 1.5 cm and 3.0 cm. The shape of the roof is half- gable and oriented towards the north. The results showed that the average temperature of the top of the roof of the three miniature houses was much higher than the temperature of the bottom of the roof and higher than the room temperature. For the room temperature between the three miniature houses with different treatments, the order of the highest room temperature to the lowest room temperature is the miniature house without using styrofoam, using 1.5 cm styrofoam, and with 3 cm styrofoam. It can be seen that the use of styrofoam affects the room temperature and is effective in reducing the room temperature. In addition, the thicker the styrofoam used, the more heat is dissipated.Keywords: styrofoam, temperature, damper

Co-Authors Adhitya Agung Pribadi Adina Widi Astuti Agus Yulianto Agus Yulianto Ahmad Minanur Rohim Allif Silfiyana Rohman Allif Silfiyana Rohman Anggita Kharisma Dewi Anisa Furtakhul Janah Arofah, Sitta Khusniati Aulia Rahma Azizah Billy Cessar Bimara Dewi, Anggita Kharisma Didik Aryanto Didik Aryanto Dwi Indah Lestari DWI YULIANTI Ellianawati, Ellianawati Etik Irawati Eva Meutia Febriani, Marosyana Ayu Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti, Fianti Gita Ayu Permatasari H, S.S. Dewanti Hermawan, Mohamad Arif Ian Yulianti Ian Yulianti Ian Yulianti, Ian Ika Vidiasari Aristawati Ika Vidiasari Aristawati Khoiru Ainin Nisa Khumaedi - Khumaedi Khumaedi Laily Nur Azizah Mohamad Arif Hermawan Mugi Lestari Mutia Hariza Lubis Mutia Hariza Lubis Naila Hilmiyana Syifa Natalia Erna Setyaningsih Rodhotul Muttaqin Rohim, Ahmad Minanur Siti Wahyuni Sitta Khusniati Arofah Sutikno Madnasri Swastika Ramadhanty Eka Putri Tri Anita Wulansari Yeni Rima Liana Yulita Nurbaiti Zayyinul Mushthofa

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