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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

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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 Â 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

Analysis of Superconductor of Nd1Ba2Cu3O7 and Nd3Ba5Cu8O18 Phases Using FTIR Spectrophotometer Putra Adnyana, IGA; Sumadiyasa, Made; Wendri, Nyoman
BULETIN FISIKA Vol 21 No 2 (2020): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

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I has been synthesized superconducting materials of the Nd1Ba2Cu3O7, Nd3Ba5Cu8O18 and Y3Ba5Cu8O18 phases. The study was conducted to determine whether the data from the phase Y1Ba2Cu3O7 can be used as a base to identify superconducting material of the Nd3Ba5Cu8O18 phase. Synthesis was done by solid state reaction method with initial mixing in HNO3 solution mixture with Y2O3, Nd2O3, BaCO3, and CuO, with the ratio adjusted to the stoichiometry calculation. Samples in the form of pellets with a diameter of 1.5 cm were sintered at 950 oC for 24 hours in an atmospheric environment. The FTIR measurements have been carried out with a standard KBr. The theoretical calculation spectra and vibration mode data from YBa2Cu3O7-d can be used to identify Nd1Ba2Cu3O7, Nd3Ba5Cu8O18 dan Y3Ba5Cu8O18, with peak absorption in the range of wave numbers that are almost the same, namely 400-450 cm-1, which is the four oxygen atoms O(2,3) mode, 426-439 cm-1 is the in-phase mode of oxygen atom O(2,3), and the vibrational mode of peaks O(4) is observed at 488 cm-1.

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

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

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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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

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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.

BEL CERDAS CERMAT MENGGUNAKAN REMOTE CONTROL WIRELESS BERBASIS MIKROKONTROLER AT89S52 Ni Luh Putu Anggreni; I Wayan Supardi; Nyoman Wendri
BULETIN FISIKA Vol 15 No 2 (2014): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

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successfully designed. AT89S52 microcontroller used to control the entire information system with sevensegment display and ULN2003 serves as a current amplifier to activate the seven segment LED displaycompilers. The sensor are used is AT89S52 based wireless remote control with a maximum distance of thesensor placement that is sensor with a frequency of 27 MHz is 19 m and the sensor with a frequency of 49MHz is 20 m, while for the sensor with a frequency of 27 MHz that is a sensor with a series of supportingcircuit was 80.4 cm and the sensor with a frequency of 49 MHz is 90.4 cm.

Analysis of Superconductor of Nd1Ba2Cu3O7 and Nd3Ba5Cu8O18 Phases Using FTIR Spectrophotometer IGA Putra Adnyana; Made Sumadiyasa; Nyoman Wendri
BULETIN FISIKA Vol 21 No 2 (2020): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

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I has been synthesized superconducting materials of the Nd1Ba2Cu3O7, Nd3Ba5Cu8O18 and Y3Ba5Cu8O18 phases. The study was conducted to determine whether the data from the phase Y1Ba2Cu3O7 can be used as a base to identify superconducting material of the Nd3Ba5Cu8O18 phase. Synthesis was done by solid state reaction method with initial mixing in HNO3 solution mixture with Y2O3, Nd2O3, BaCO3, and CuO, with the ratio adjusted to the stoichiometry calculation. Samples in the form of pellets with a diameter of 1.5 cm were sintered at 950 oC for 24 hours in an atmospheric environment. The FTIR measurements have been carried out with a standard KBr. The theoretical calculation spectra and vibration mode data from YBa2Cu3O7-d can be used to identify Nd1Ba2Cu3O7, Nd3Ba5Cu8O18 dan Y3Ba5Cu8O18, with peak absorption in the range of wave numbers that are almost the same, namely 400-450 cm-1, which is the four oxygen atoms O(2,3) mode, 426-439 cm-1 is the in-phase mode of oxygen atom O(2,3), and the vibrational mode of peaks O(4) is observed at 488 cm-1.

Chitosan as A Silver (Ag) Adsorbent on Hospital Photography Fixer Waste Decky Danuarta Fernanda; Ni Nyoman Rupiasih; Nyoman Wendri; Ni Wayan Eri Sandriani
BULETIN FISIKA Vol 20 No 1 (2019): BULETIN FISIKA
Publisher : Departement of Physics Faculty of Mathematics and Natural Sciences, and Institute of Research and Community Services Udayana University, Kampus Bukit Jimbaran Badung Bali

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Abstrak – A research on the use of chitosan as an adsorbent of silver (Ag) on the photography fixer waste from hospital has been carried out. Chitosan used was in the form of powder and membrane. Chitosan powder used was 0.5 g, 1 g, 2 g and 5 g, and the membrane used was a 2% chitosan membrane of 5 g. The adsorbent materials added to 50 mL of fixer waste and soaked for 24 hours. The Whatmann filter paper was also used by filtering method. The results showed that the 2% chitosan membrane of 5 g gave the highest silver adsorption percentage of 95.99%. The percentage of adsorption by chitosan powder of 0.5, 1, 2 and 5 g were 4.41%, 6.43%, 7.82% and 36.42% respectively. While the percentage of silver adsorption by Whatman filter paper was 0.05%. The used of chitosan in the form of membrane is the most effective adsorbent of silver on photographic fixer wastes.

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