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Mesin Lenoir Kuantum Sistem 5 Fermion dalam Kotak 1D Sukmawati, Lara; Latifah, Eny; Wisodo, Hari
Jurnal MIPA dan Pembelajarannya Vol. 3 No. 4 (2023): April
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um067v3i42023p163-172

Abstract

Mesin 3 tahap Lenoir berhasil dikomersilkan oleh Ѐtienne Lenoir. Sayangnya mesin ini memiliki efisiensi rendah, seperti halnya mesin klasik yang lain. Dengan demikian diperlukan eksplorasi implementasi sistem kuantum, mengingat implementasi kuantum berhasil meningkatkan efisiensi mesin non-Carnot. Penelitian ini mengimplementasikan prinsip mekanika kuantum dalam membangun mesin panas sedemikian hingga menghasilkan mesin panas kuantum. Sistem mesin panas yang dipilih pada penelitian ini adalah sistem 5 fermion yang terjebak dalam kotak 1D dengan salah satu batas dinding potensial dapat bergerak bebas seperti piston pada termodinamika klasik. Metode penelitian yang diaplikasikan adalah metode analitik teoritik dengan menerapkan model analogi termodifikasi. Model analogi adalah penerapan analogi kuantum terhadap sistem dan proses mesin panas klasik. Sistem 5 fermion dideskripsikan dengan persamaan Schrodinger. Fermion tidak diijinkan memiliki himpunan bilangan kuantum yang sama atau dua / lebih dan fermion tidak boleh mencapai satu keadaan yang sama, sehingga fungsi gelombangnya bersifat antisimetri. Sistem mesin Lenoir lima fermion memiliki dua keadaan terendah. Keadaan fermion sebagai solusi persamaan Schrodinger memberikan informasi nilai-eigen energi sistem dan probabilitasnya ditiap tingkat keadaan yang menentukan nilai harap Hamiltonian, analogi energi panas dan usaha. Selanjutnya perubahan kuantitas energi ini menjalani proses isokorik, ekspansi adiabatik, dan kompresi isobarik kuantum. Setelah menjalani satu siklus, sistem ini berhasil dikalkulasi dan nilai efisiensi yang dihasilkan masih rendah. Dengan demikian perlu dilakukan penelitian lebih lanjut dengan mempertimbangkan komposisi probabilitas tiap keadaan.
The Effect of Adding Aluminium on the Performance of ZnO NRs/PANi in Their Application as Photoelectrochemical Water Splitting Sari, Eprilia Trikusuma; Mufti, Nandang; Nadhira, Anissa Chairani Alfin; Wisodo, Hari; Diantoro, Markus
Journal of Mechanical Engineering Science and Technology (JMEST) Vol 7, No 2 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um016v7i22023p202

Abstract

Photoelectrochemical (PEC) is a new renewable energy technology that converts H2O into hydrogen and oxygen gas with the help of sunlight. A photoelectrochemical cell device consists of three main components, one of which is the photoanode. One of the materials that can be used as a photoanode is ZnO which has good electrical properties and is non-toxic. Nanorods-structured ZnO has the advantage of being able to increase light absorption due to its high surface area. However, the resulting performance is still quite low. So it is necessary to make modifications to the photoanode, one of which is by adding aluminium material to ZnO NRs, which has the potential to increase the conductivity of PEC in the production of H2 and O2 in H2O. To overcome the loss of samples during testing, the thin film will be coated with conductive polymers such as polyaniline (PANi), which has high conductivity, can increase photoactive ability, and has good corrosion resistance. In this study, the performance of ZnO NRs/PANi against AZO NRs/PANi will be studied by adding aluminium. The ZnO nanorods were synthesized by Hydrothermal method, Aluminium was deposited on ZnO NRs by DC Magnetron Sputtering method, and PANi was synthesized by polymerization method. From the XRD characterization results, it can be concluded that the addition of aluminium to ZnO NRs/PANi causes an increase in crystallinity and peak shift. SEM characterization shows that the addition of Al to ZnO NRs/PANi causes the porosity value to increase. In addition, UV-Vis characterization showed that the addition of Al material to the ZnO NRs/PANi thin film resulted in a wider range of absorbance of the light spectrum. Then, Cyclic Voltammetry test shows that the addition of aluminium increases the efficiency of the photoelectrochemical.
OPTIMALISASI PROGRAM RESEARCH ASSISTANT GURU DI SEKOLAH SEBAGAI JALUR SUKSES MBKM DI PROGRAM STUDI PENDIDIKAN FISIKA FMIPA UM Hapsoro, Cahyo Aji; Wisodo, Hari; Pujiarti, Herlin; Fawaiz, Sahal; Suryadi, Ahmad; Firmansyah, Danny; Layly, Annysa Nur
Jurnal Graha Pengabdian Vol 5, No 3 (2023)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um078v5i32023p%p

Abstract

Beberapa program asisten peneliti telah banyak dilaksanakan di berbagai bidang salah satunya pada bidang pendidikan keperawatan dan terbukti memberikan manfaat terhadap karir mahasiswa lulusan. Jika ditinjau pada bidang pendidikan, program asisten peneliti berpeluang membentuk komunitas pembelajaran profesional antara mahasiswa calon guru dan guru yang dapat meningkatkan kemampuan sosial dan individu. Namun di Indonesia masih jarang ditemukan dalam bidang pendidikan sehingga momentum program Merdeka Belajar-Kampus Merdeka sangat tepat untuk menginisiasi program asisten peneliti. Tujuan dari penelitian ini adalah untuk mengembangkan keterampilan meneliti mahasiswa calon guru dengan menjadi asisten peneliti guru dalam melakukan penelitian di sekolah, meningkatkan motivasi dan minat mahasiswa calon guru untuk berkarir menjadi guru maupun peneliti, dan meningkatkan keterampilan penulisan ilmiah dan jumlah kualitas publikasi. Kegiatan yang dilakukan dalam penelitian ini meliputi persiapan program dan pembentukan klub jurnal, survei awal dan diskusi dosen-guru, pelaksanaan program, penulisan publikasi atau karya ilmiah, serta survei akhir.
Photocatalyst Activity of TiO2/CQD Nanocomposite for Degradating Pesticide Contaminants in Water Bt. Sunardi, Asrianti; Candra Kirana, Kurnia Galuh; Mufti, Nandang; Wisodo, Hari
JPSE (Journal of Physical Science and Engineering) Vol 8, No 2 (2023): JPSE (Journal of Physical Science and Engineering)
Publisher : Universitas Negeri Malang

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

Abstract

This study investigates the effectiveness of TiO2/CQD composites on the pesticide degradation. TiO2/CQD composites has been successfully synthesized using hydrothermal methods. The samples were characterized by XRD, TEM, PL, BET, and UV-Vis. The result of XRD shows the addition of CQD does not affect the crystal phase of TiO2. The result of TEM shows that CQD are well deposited on the TiO2 surface. The particle size of the TiO2/CQD composite is getting larger after the addition of CQD compared to pure TiO2 and the average particle size distribution is about 109-114 nm. PL analysis found that the addition of CQD increased the intensity of NBE emissions while Tii decreased. The BET test result of the TiO2/CQD composite shows a surface area of 8.6710 m2/g. The pore diameter is 37.4 nm compared to pure TiO2. While the pore volume is 0.0754 cm3/g. Photocatalyst activity of TiO2/CQD against pesticides after 150 minutes of irradiation reached 89.9667%. TiO2/CQD photocatalyst has significant potential for pesticide water treatment. Further research is needed for large-scale optimization and evaluation.
Instrument Test Kinematics: How Velocity and Acceleration Vectors Captured by High School Students Nukhba, Rania; Sutopo, Sutopo; Wisodo, Hari
Kasuari: Physics Education Journal (KPEJ) Vol. 7 No. 2 (2024): December 2024
Publisher : Universitas Papua, Jurusan Pendidikan Fisika FKIP Unipa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37891/kpej.v7i2.572

Abstract

Vectors in kinematics are rarely highlighted in high school. Even though vectors are the language used by physicists. This study aims to determine the validity and reliability of the test instrument developed and to explore the ability of vectors in kinematics of high school students. The method used in this research is research and development of the 4D model. The developed test instrument for vectors in kinematics is in the form of multiple choice with an arrow direction accompanied by a command to describe the vector and explain the reason for choosing the vector direction. The test instrument covers one- and two-dimensional kinematics topics by highlighting the concepts of velocity and acceleration. Two-dimensional kinematics is divided into constant velocity and increasing velocity. This test instrument consists of thirteen questions with an average point-biserial coefficient of 0.493 and KR-20 of 0.784. Then, this test instrument was used to measure the vector ability in kinematics of high school students with a sample size of sixty-seven students. It was found that most high school students had difficulty in acceleration as two-dimensional vector, acceleration as one-dimensional vector, and velocity as one-dimensional vector with few obstacles. Learning with the method of integrating vectors in kinematics has the possibility to solve this problem.
Development and Validation of Critical Thinking Skills Instruments on Mechanical Waves for Senior High School Student Azizah, Fithrotul; Handayanto, Supriyono Koes; Wisodo, Hari; Fernando, Trio Junira; Kuswanto, Kuswanto; Prani, Anisak Intan Eka
Kasuari: Physics Education Journal (KPEJ) Vol. 7 No. 1 (2024): June 2024
Publisher : Universitas Papua, Jurusan Pendidikan Fisika FKIP Unipa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37891/kpej.v7i1.624

Abstract

The importance of developing critical thinking skills (CTS) is claimed as a major education purpose.  Recently, enhanced learning has been conducted to promote students' CTS through study on certain topics (specific domains). Based on the numerous studies on CTS, there is a need for an assessment instrument to test students' CTS.  This research aims to develop an instrument of CTC on mechanical wave topics for senior high school students. The instrument consists of seven essay items and one forced-choice item, tested to 45 students of class XI high school in Malang. The validity test obtained an excellent Cronbach alpha coefficient of ? = 0.717. There was also an inter-rater test for the scoring guideline reliability using the intraclass correlation coefficient (ICC) with high reliability results (? = 0.909). The results of this study indicate that the instrument is qualified to be used to measure students' CTS on mechanical wave topics.
PEMBELAJARAN BERBASIS ALAM DI AREA WISATA SEBAGAI LANDASAN PEMBUATAN INKUBATOR BISNIS DI KELAS KEWIRAUSAHAAN SMK Zulaikah, Siti; Wisodo, Hari; Hapsoro, Cahyo Aji; Azzahro, Rossyda; Hasan, Muhammad Fathur Rouf
JURNAL WIDYA LAKSANA Vol 12 No 1 (2023)
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jwl.v12i1.52937

Abstract

Pembelajaran berbasis Alam memanfaatkan obyek sekitar dalam mempelajari suatu bidang ilmu. Pembelajaran Alam banyak digunakan dalam sistem pendidikan sebagai solusi alternatif untuk mengembangakn budaya lokal. Kegiatan ini bertujuan untuk menerapkan pembelajaran berbasis alam pada kelas kewirausahaan di SMK sebagai incubator bisnis. Metode yang digunakan pada penelitian ini berupa sosialisasi dan diskusi mengenai potensi alam Donomulyo seperti Karst, Mangrove, dan area pantai. Kegiatan fokus pada Area Wisata Pantai selatan Jawa dengan beberapa jenis wisata berupa Karst, pantai, Gua, dan Mangrove. Kegiatan dimulai dengan pembuatan rundown potensi alam serta potensi yang dapat dikembangkan sebagai landasan pembentukan inkubator bisnis. Inkubator bisnis dirancang untuk pengembangan basis jenis wisata. Beberapa diantaranya, pengolahan bahan baku seperti hasil laut menjadi product yang marketable, pengembangan Wisata Mangrove menjadi wisata Edukasi, Pengembangan Science Corner dan Pemanfaatan Karst menjadi obyek Wisata. Hasil sosialisasi ini mendapat antusiasme masyarakat, yakni 90% setuju terhadap program ini.
Scientific Explanation Skills in Dynamic Fluid through Problem-Based Learning Assisted by PhET Simulations Nailunada, Novaliza; Yuliati, Lia; Wisodo, Hari
Kasuari: Physics Education Journal (KPEJ) Vol. 8 No. 1 (2025): June 2025
Publisher : Universitas Papua, Jurusan Pendidikan Fisika FKIP Unipa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37891/kpej.v8i1.891

Abstract

This study aims to explore students' scientific explanation skills through the implementation of the Problem-Based Learning (PBL) model assisted by PhET simulations on the topic of dynamic fluids among high school students. The research employed a mixed-method approach with an explanatory model involving 58 eleventh-grade students. Data were collected through tests and interviews. Quantitative data were analyzed using a paired sample t-test, N-gain calculation, and effect size, while qualitative data were analyzed through data collection, reduction, coding, and drawing conclusions.The analysis results showed that the scientific explanation skills of students in the experimental class increased significantly compared to the control class. The paired sample t-test results indicated a significant difference between the experimental and control classes, and the N-gain score of 0.4096 indicated a moderate improvement. More students in the experimental class were categorized as fully supported, while the control class was dominated by students in the invalid category. The implementation of PBL assisted by PhET simulations proved effective in enhancing students' abilities to construct claims, provide evidence, and present logical scientific reasoning. In this study, the integration of PBL and interactive technology in science learning is suggested as a means to improve students' scientific explanation skills.
A Research to The Solar Coronal Initial Magnetic Dynamics Prior a Launch of CME Setiahadi, Bambang; Kamarudin, Farahana; Sujito, S; Wisodo, Hari
Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek) 2020: Prosiding SNPBS (Seminar Nasional Pendidikan Biologi dan Saintek)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (359.234 KB)

Abstract

Two dimensional magnetic-structures is developed and derived in the basic assumption line-tied condition in solar plasma. The type is two-dimensional half-circle magnetic arcade topology imbedded in photosphere dense plasma. The magnetic topology is assumed to be converted dynamically due to disturbance in magnetic fields and became a CME. Disturbance is derived from magneto-hydrostatic condition and perturbation is applied as first-order small deviation along the magnetic fields. Along the base of the magnetic arcade every disturbance is assumed to be zeroed by dense plasma and the magnetic fields of line is line-tied on photosphere. By inspecting snapshot data it is found that the derived structure is similar with solar coronal magnetic structure prior a launch of CME from coronagraph white light data.
The Influence of the 9E Learning Cycle with A STEM Approach on Students' Science Process Skills in Static Fluid Topics M Ali Alfian; Parno Parno; Hari Wisodo; Noorzana Khamis
Jurnal Penelitian Pendidikan IPA Vol 10 No 11 (2024): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i11.8916

Abstract

This study investigated the effectiveness of integrating the 9E Learning Cycle Model with STEM approaches to enhance students' Science Process Skills (SPS) in static fluid concepts. The research employed a mixed-methods embedded experimental design with 32 senior high school students. Quantitative data were collected through pre- and post-tests, while qualitative data were gathered via observations and interviews. Results showed significant improvements across all SPS components, with N-gain values ranging from 0.63 to 0.64, indicating medium gains. Students demonstrated enhanced abilities in observing, classifying, measuring, inferring, predicting, and communicating scientific concepts. The integrated approach facilitated practical application of knowledge, as evidenced by students' work on flood-resistant garage prototypes and wave-powered electricity generators. Qualitative findings revealed increased student engagement and improved problem-solving skills. The study concludes that the integration of the 9E Learning Cycle Model with STEM approaches offers an effective framework for enhancing students' science process skills and their ability to apply these skills to real-world problems. These recommendations aim to provide a more comprehensive understanding of the approach's potential in science education across various domains and student populations