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All Journal Buletin Udayana Mengabdi Prosiding Seminar Nasional MIPA Jurnal Sains Materi Indonesia Jurnal Neutrino : jurnal fisika dan aplikasinya PROFESIENSI Indonesian Physical Review Kappa Journal BULETIN FISIKA
Nyoman Wendri
Prodi Studi Fisika, FMIPA, Universitas Udayana
Astronomy Education Energy Materials Science & Nanotechnology Medicine & Pharmacology Physics Other

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RE-LAYOUT FASILITAS PRODUKSI DENGAN MENGGUNAKAN METODE TRIANGULAR FLOW DIAGRAM Wendri, Wendri; Cundara, Nandar; Arifin, Zainal
PROFESIENSI Vol 1, No 2 (2013): PROFESIENSI JOURNAL
Publisher : PROFESIENSI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (29.826 KB)

Abstract

Setiap perusahaan yang menghasilkan suatu produk akan memerlukan suatu proses produksiyang baik, disengaja maupun tidak disengaja perusahaan bersangkutan akan menyelenggarakan perbaikansecara terus menerus pada tata letak produksinya dan aliran materialnya untuk menunjang jalannya prosesproduksi dengan baik. Untuk dapat bersaing PT.VARTA Microbattery Indonesia berusaha meningkatkankualitas dan produktivitas, kerena mereka menyadari seleksi konsumen sangat ketat dan biaya kualitasperusahaan tinggi. Setelah dilakukan penganalisaan, dapat diindentifikasi hal-hal yang menyebabkanketidak efisienan.Tujuan dari pelaksanaan penelitian ini adalah untuk mengetahui layout yang baik agar dapatmengurangi jarak material handling dengan menggunakan Triangular Flow Diagram di departemenproduksi PT. VARTA Microbattery Indonesia. Metode yang digunakan adalah From To Chart, TriangularFlow Diagram dengan membuat 3 percobaan layout yang lebih baik dan membandingkannya.Hasil penelitian menunjukkan bahwa alternatif percobaan III memiliki hasil nilai analisishubungan stasiun kerja yang paling kecil dan penurunan beban yang paling besar, sehingga untuk usulanrelayout untuk lantai produksi lithium menggunakan jalur lintasan alternatif percobaan III.Kata Kunci: Re-layout, Triangular Flow Diagram, Fasilitas Produksi
PENGENALAN METODE INQUIRI DALAM PEMBELAJARAN IPA DI SDN 6 UBUNG DENPASAR Wendri, Nyoman; Susilawati, Made
Prosiding Seminar Nasional MIPA 2013: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2013
Publisher : Prosiding Seminar Nasional MIPA

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Abstract   Technological developments will not be separated from the development in the field of Natural Sciences (IPA). Development of the field of science is not likely to occur if not accompanied by an increase in the quality of science education, has been teaching science while considered a difficult subject. Inquiri is a learning process based on the search and discovery through systematic thinking process. This activity is done in SDN 6 Ubung Denpasar on fourth grade students. This activity aims to increase the understanding of materials science in the fourth grade students of SDN 6 Ubung Denpasar and increase student interaction in the classroom in the following learning science. IPA materials covered are the parts of the plant. Analysis results obtained mean = 71.79 which indicates that the average student evaluation results for the discussion of the parts of the plants is 71.79, this value is greater than the average value of the specified class, which is 65. T-test results also showed t = 4.40 with p = 0.000 smaller 0.05. This means learning implemented effectively enhance students' understanding and knowledge of the science subjects
Penentuan Dosis Paparan Radiasi Pesawat Sinar-X Pemeriksaan Thorax Berdasarkan Indeks Massa Tubuh (IMT) Aulia Nur Aisah; I Gusti Ngurah Sutapa; Nyoman Wendri
Kappa Journal Vol 5 No 2 (2021): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v5i2.4110

Abstract

Telah dilakukan penelitian yang bertujuan untuk mengetahui pengaruh dosis paparan dan indeks eksposi pada pemeriksaan thorax terhadap IMT pasien dewasa. Data peneltian yang digunakan pada saat pengamatan adalah berat dan tinggi badan pasien, faktor eksposi yang terdiri dari tegangan (kV), Arus (mA) dan waktu (s) serta nilai FFD pada saat pemeriksaan. Pengambilan data dengan menggunakan jenis pemeriksaan thorax Posterior-Anterior (PA). Rentang usia pasien yang digunakan saat penelitian sesuai dengan aturan DEPKES pada kategori dewasa yaitu 26-45 tahun. Pengujian pada data menggunakan uji-F dengan taraf signifikansi 0,05. Berdasarkan hasil pengujian data menggunakan uji-F diperoleh nilai signifikansi sebesar 0,000 dan nilai Fhitung sebesar 49,166 dengan nilai taraf signifikansi 0,05 dan nilai Ftabel sebesar 3,35. Dari hasil tersebut dinyatakan memenuhi kriteria pengujian dalam statistik dimana H1 diterima dan H0 ditolak, sehingga dapat disimpulkan bahwa terdapat pengaruh pada nilai dosis paparan dan nilai indeks ekposi terhadap Indeks Massa Tubuh (IMT) dimana nilai indeks eksposi berpengaruh terhadap hasil citra pesawat sinar-X pemeriksaan thorax.
BIOSINTESIS NANOPARTIKEL PERAK MENGGUNAKAN EKSTRAK DAUN SAMBILOTO: OPTIMASI PROSES DAN KARAKTERISASI Nyoman Wendri; Ni Nyoman Rupiasih; Made Sumadiyasa
Jurnal Sains Materi Indonesia Vol 18, No 4: JULI 2017
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (236.749 KB) | DOI: 10.17146/jsmi.2017.18.4.4125

Abstract

BIOSINTESIS NANOPARTIKEL PERAK MENGGUNAKAN EKSTRAK DAUN SAMBILOTO: OPTIMASI PROSES DAN KARAKTERISASI. Pada penelitian ini telah berhasil disintesis nanopartikel perak (AgNP) dengan metode biologi (biosintesis). Sintesis dilakukan dengan menggunakan ekstrak daun Sambiloto (Andrographis paniculata Ness). Penelitian ini meliputi penentuan rasio volume sintesis (larutan AgNO3:larutan ekstrak) yang optimum dan karakterisasi nanopartikel perak yang terbentuk. Konsentrasi larutan AgNO3 yang digunakan 1 M dan larutan ekstrak adalah 7,5 g/L. Karakterisasi meliputi spektrofotometer UV-Vis, EDS, TEM, XRD dan FTIR. Hasil penelitian menunjukkan bahwa rasio volume sintesis optimum adalah 10 µL:10 mL. Karakteristik nanopartikel perak yang diperoleh adalah absorbsi surface Plasmon resonance (SPR) pada panjang gelombang 423 nm. Puncak-puncak difraksi teramati pada sudut 2θ yaitu 38,180, 45,810 dan 64,870, yang bersesuaian dengan bidang hkl: (1 1 1), (2 0 0) dan (2 2 0). Data tersebut menunjukkan bahwa nanopartikel perak yang terbentuk memiliki struktur kristal face centre cubic (FCC) dengan parameter kisi a sebesar 4,03 Å. Hasil karakterisasi dengan TEM diperoleh ukuran partikel sekitar 10-30 nm. ABSTRACT    BIOSYNTHESIS OF SILVER NANOPARTICLES USING SAMBILOTO LEAF EXTRACT: OPTIMIZATION PROCESS AND CHARACTERIZATION. It has been synthesized silver nanoparticles (AgNP) with biological method or biosynthesis, successfully. The synthesis is done using extract of Sambiloto leaf (Andrographis paniculata Ness). The study involved determining the optimum volume ratio of synthesis i.e. AgNO3 solution:extract solution and characterization of nanoparticles formed. The concentration of AgNO3 solution used was 1 M and extract solution was 7.5 g/L. The characterization included UV-Vis spectrophotometer, EDS, TEM, XRD and FTIR spectrophotometer. The results obtained were, the optimum volume ratio of synthesis was 10 µL:10 mL. The characteristics of AgNP formed were the Surface Plasmon Resonance (SPR) absorbance at a wavelength of 423 nm. The diffraction peaks observed at angles 2θ of 38.180, 45.810 and 64.870 which corresponded to the hkl (1 1 1), (2 0 0) and (2 2 0). These results showed that the crystal structure of AgNP formed was face center cubic (FCC) with lattice parameter a, of 4.03 Å. TEM characterization showed that the size of AgNP nanoparticles was about 10-30 nm.
UPAYA PENINGKATAN PENGUASAAN KONSEP MATERI KULIAH DASAR PROGRAM STUDI MATEMATIKA MELALUI MASTERY LEARNING MODEL I.G.A.M. Srinadi; I.K.G. Sukarsa; K. Jayanegara; I.N. Wendri
Buletin Udayana Mengabdi Vol 16 No 3 (2017)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

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Abstract

Kebutuhan guru privat bagi sebagian besar siswa tingkat sekolah dasar dan sekolah menengah mendorong mahasiswa Program Studi Matematika, FMIPA, Universitas Udayana khususnya yang tinggal menyelesaikan Tugas Akhir (TA) mengisi waktu luang sebagai guru privat. Penilaian yang baik dari masyarakat (stake holder) diperoleh apabila pemahaman dan penguasaan mahasiswa pada mata kuliah dasar yang mencakup konsep kalkulus (fungsi), matriks-vektor, dan peluang-statistika telah tercapai dengan tingkat kesempurnaan lebih dari 85%. Tujuan dari program pengabdian masyarakat ini, adalah meningkatkan kompetensi mahasiswa PS Matematika Universitas Udayana terhadap penguasaan mata kuliah dasar meliputi kalkulus (fungsi), matriks-vektor, dan peluang-statistika. Metode yang digunakan dalam kegiatan ini adalah berupa pendalaman materi dengan metode presentasi, demonstrasi, diskusi dan penugasan. Prosedur pelaksanaan model pembelajaran tuntas meliputi tahap orientasi, penyajian, latihan terstruktur, latihan terbimbing, dan latihan mandiri. Evaluasi dari program pengabdian dengan pemberian pre test dan post test. Indikator keberhasilan dari pelaksanaan kegiatan diukur dari adanya peningkatan kompetensi mahasiswa pada mata kuliah dasar ditandai dengan peningkatan nilai hasil belajar dan rata-rata peningkatan nilai kelompok. Implementasi model pembelajaran tuntas efektif dalam meningkatkan kompetensi mahasiswa tingkat akhir terhadap penguasaan konsep mata kuliah dasar. Predikat kelompok mahasiswa semuanya memperoleh predikat sempurna, menunjukkan penerapan model pembelajaran tuntas sangat efektif dalam meningkatkan kompetensi mahasiswa terhadap penguasaan konsep materi dasar. Hal ini juga ditunjukkan dari hasil uji analisis beda nilai tengah data berpasangan nilai post-test dan pre-test terjadi perbedaan nilai yang signifikan, yaitu rataan nilai post test meningkat secara signifikan dari rataan nilai pre-test.
PENGENALAN METODE INQUIRI DALAM PEMBELAJARAN IPA DI SDN 6 UBUNG DENPASAR N. Wendri1) dan M. Susilawati2) N. Wendri; M. Susilawati
Buletin Udayana Mengabdi Vol 12 No 2 (2013): Volume 12 No.2 – September 2013
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (254.949 KB)

Abstract

Technological developments will not be separated from the development in the field of Natural Sciences (IPA).Development of the field of science is not likely to occur if not accompanied by an increase in the quality of scienceeducation. Moreover, it has been considered that teaching science is as a difficult subject. Inquiri is a learningprocess based on the search and discovery through systematic thinking process. This activity was done in SDN 6Ubung Denpasar on fourth grade students. This activity aims to improve the understanding of materials sciencein the fourth grade students of SDN 6 Ubung Denpasar and increase student interaction in the classroom inattending the learning science. IPA materials covered are the parts of the plant. Analysis results obtained mean= 71.79 indicating that the average student evaluation results for the discussion of the parts of the plants is 71.79,this score is greater than the average score of the specified class, which is 65. T-test results also showed t = 4.40with p = 0.000 smaller 0.05. This means learning implemented effectively enhance students’ understanding andknowledge of the science subjects.
PENGENALAN METODE INQUIRI DALAM PEMBELAJARAN IPA DI SDN 6 UBUNG DENPASAR Nyoman Wendri; Made Susilawati
Prosiding Seminar Nasional MIPA 2013: PROSIDING SEMINAR NASIONAL MIPA UNDIKSHA 2013
Publisher : Prosiding Seminar Nasional MIPA

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

Abstract

Abstract   Technological developments will not be separated from the development in the field of Natural Sciences (IPA). Development of the field of science is not likely to occur if not accompanied by an increase in the quality of science education, has been teaching science while considered a difficult subject. Inquiri is a learning process based on the search and discovery through systematic thinking process. This activity is done in SDN 6 Ubung Denpasar on fourth grade students. This activity aims to increase the understanding of materials science in the fourth grade students of SDN 6 Ubung Denpasar and increase student interaction in the classroom in the following learning science. IPA materials covered are the parts of the plant. Analysis results obtained mean = 71.79 which indicates that the average student evaluation results for the discussion of the parts of the plants is 71.79, this value is greater than the average value of the specified class, which is 65. T-test results also showed t = 4.40 with p = 0.000 smaller 0.05. This means learning implemented effectively enhance students' understanding and knowledge of the science subjects
THE EFFICACY OF CHITOSAN FROM WINDU SHRIMP SHELLS AS A PRESERVATIVE OF FRESH KENYAR FISH IN THE FORM OF DARNE DURING STORAGE AT ROOM TEMPERATURE Ni Nyoman Rupiasih; Yosefa Yakunda Tandu; Nyoman Wendri; S. S. Jagtap
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 15, No 1 (2022): October
Publisher : Department of Physics, Maulana Malik Ibrahim State Islamic University of Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/neu.v15i1.17094

Abstract

This study is about the efficacy of chitosan from windu shrimp shells (Panaeus monodon) as a preservative for fresh fish in the form of darne (steak), namely fresh kenyar fish (Sarda orientalis) during storage at room temperature. The chitosan solution used are chitosan solution with concentration of 1%, 1.5%, 2%, and 2.5%. The fish samples which soaked in that solutions are named T1, T2, T3, and T4, respectively .. The soaking time were 20, 40 and 60 minutes. As control were fish without treatment (C-0) and fish soaked in acetic acid (C-A). All samples stored at room temperature. The activity of chitosan as fish preservative was analyzed through pH and antimicrobial test. The pH test were made in the range of 0, 24, 48 and 72 h. The antimicrobial test was done on the storage period 24 h. The results showed that the greater the concentration of chitosan solution, the shorter the soaking time required to obtain the benefits of chitosan as an antimicrobial agent for fish preservation, especially kenyar fish in the form of darne. The fish that are still suitable for consumption for 24 hours of storage are fish that are soaked in a 2.5% (T4) chitosan solution at either 20, 40, or 60 minutes of soaking time.
Studi Pemetaan Kerawanan Gempabumi Berdasarkan Pola-Pola Sesar Menggunakan Focal Mechanism dari Data Gempabumi di Wilayah Bali Crisanti Uduk, Maria; Sukarasa, I Ketut; Tyastama, Arief; Suarbawa, Komang Ngurah; Wendri, Nyoman; Sandi, I Nengah
Kappa Journal Vol 9 No 1 (2025): April
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i1.29374

Abstract

Research regarding earthquake vulnerability mapping studies based on fault patterns using focal mechanism data from earthquake data in the Bali Region has been carried out. This research aims to determine fault patterns in the Bali region using a focal mechanism from earthquake data for 1976-2021, determine the types of faults in the Bali region when analyzed using the focal mechanism method and determine areas that are prone to earthquakes in the Bali region. The data used are seismograph recordings obtained from the Global Centroid Moment Tensor (CMT) and the United States Geological Survey (USGS). The method used in this research is the focal mechanism method. The results of mapping the distribution of focal balls in the Bali region are that there were 9 earthquake events above 4 M, with 8 events being thrust faults and 1 being an oblique fault. Areas that are prone to earthquakes are in the East Bali region, specifically in Karangasam, and in general earthquakes occur in water areas or at sea. The results of the seismicity map of the distribution of earthquakes show that the depth of earthquakes in the Bali region varies. On the seismicity map, it can be seen that the most dominant ones are earthquakes in the deep and medium earthquake categories, but the most dangerous are earthquakes in the shallow depth category.
Comparison of Seismicity Between the Subduction Zone and Local Fault Zone in the Bali Island Region During the 1963–2023 Period Using the Likelihood Method Nainggolan, Putri Srimalemta; Winardi Tjahyo Baskoro; I Gusti Ketut Satria Bunaga; I Ketut Sukarasa; Nyoman Wendri; I Ketut Putra
Kappa Journal Vol 9 No 2 (2025): Agustus
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v9i2.30243

Abstract

Research has been conducted on the comparison of seismicity between the subduction zone and the local fault zone in the Bali Island region during the 1963–2023 period. This research aims to compare the b-value, a-value, seismicity index, and earthquake recurrence period between the subduction zone and the local fault zone. The research was conducted within the observation boundaries of 114,4°–115,7° East Longitude and 11,4°–8,8° South Latitude. The research was carried out at the Center for Meteorology, Climatology, and Geophysics Region III Denpasar using the likelihood method for earthquakes with magnitude ≥ 3,3. The data used were obtained from the official websites of the USGS (United States Geological Survey) and BMKG, with depths ≤ 600 km for the subduction zone and depths ≤ 35 km for the local fault zone. The results show that the subduction zone has a b-value of 0,534 and an a-value of 4,599, while the local fault zone has a b-value of 0,829 and an a-value of 5,087. The seismicity index in the subduction zone ranges from 0,289–13,046 with an earthquake recurrence period of 0,077–3,459 years. Meanwhile, in the local fault zone, the seismicity index ranges from 0,126–8,366 with an earthquake recurrence period of 0,212–7,949 years. Earthquake distribution is dominated in the subduction zone at 82,63% compared to the local fault zone at 17,37%.
Co-Authors Aldo Dzar Al-Ghifari Alit Paramarta, Ida Bagus Aprilion Krisandi Aulia Nur Aisah Baskoro, Winardi Tjahyo Br Barus, Ema Vinesia Crisanti Uduk, Maria Decky Danuarta Fernanda Dionicius Hadarian Feliatra Gusti Ngurah Sutapa Hery Suyanto I B. Sujana Manuaba I Gde Antha Kasmawan I Gede Didi Jimbarwan I Gusti Ayu Made Srinadi I Gusti Ketut Satria Bunaga I Gusti Putu Yoyok Irawan I Ketut Putra I Ketut putra, I Ketut I Nengah Sandi I Putu Amara Setia Putra I Putu Eddy Aditya Harrischandra I Wayan Supardi I.K.G. Sukarsa Ida Bagus Made Suryatika IGA Putra Adnyana IGN Agung Dwijaputra K N Suarbawa K. Jayanegara K. N. Suarbawa K.N. Suarbawa Komang Ngurah Suarbawa M. Susilawati Made Sumadiyasa Made Susilawati Mahendra Sastra Adhi Wiguna Gede Muna Alfira N. L. P. Sarasmitha Nainggolan, Putri Srimalemta Nandar Cundara, Nandar Nasution, Ali Napiah Ni Luh Putu Anggreni Ni Made Yuliantini Ni Nyoman Rupiasih Ni Nyoman, Ratini Ni Wayan Eri Sandriani Ni Wayan Sariasih Nur Fadhillah Muhamad Nurmalasari, Ni Putu Yuni P. Suardana Patriot Akbar Pramuditya Adha Ra'afarudin Prayuda, I Made Ardi Putra Adnyana, IGA Putu Ekayani Sri Tussniari Ratu, Trivena Sesilia Rio Saputra S. S. Jagtap Satriya Wibawa, I Made Sukarasa, I Ketut Taufikur Rohman Trisanjaya Purba Ghaniel Trisnawati, Ni Luh Putu Tyastama, Arief Wayan Gede Suharta Widianingsih, Ni Kadek Indah Winardi Tjahyo Baskoro Yosefa Yakunda Tandu Yudisthira Arimbawa Saputra I Gusti Ngurah Agung Zainal Arifin