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All Journal Buletin Udayana Mengabdi Jurnal Ilmu Dasar Jurnal Sains Materi Indonesia Jurnal Neutrino : jurnal fisika dan aplikasinya Journal of Mathematical and Fundamental Sciences Jurnal Penelitian Pendidikan IPA (JPPIPA) Kappa Journal Jurnal Fisika Indonesia

Made Sumadiyasa

Unknown Affiliation

Author-ID : 840356

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Control & Systems Engineering Earth & Planetary Sciences Education Energy Materials Science & Nanotechnology Mathematics Physics Other

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Sistem Pendeteksi Banjir Berbasis Sensor Ultrasonik Hc-Sr04 Dan Modul Esp8266-12e Dengan Media Komunikasi Telegram Dan Buzzer Hanan Hanan; Anak Agung Ngurah Gunawan; Made Sumadiyasa
Kappa Journal Vol 5 No 1 (2021): Juni
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v5i1.1622

It has been designed the water surface level detection system based on the ultrasonic sensor HC-SR04 and the ESP8266-12E module through telegram and buzzer communication media.. The research aims to design a water surface-level detection system by using ultrasonic sensors and the ESP8266-12E module. The tools and materials used during the design are: Ultrasonic sensors HC-SR04, module ESP8266-12E, and buzzer as an output to sound the alarm. The ultrasonic HC-SR04 sensor will detect the water surface level, the detection data will be sent to the ESP8266-12E module, then the system will send the information in the form of a message through telegram and buzzer application. The messages delivered are several stages including standby, alert, and danger. The methods used in this design are planning, study libraries, collection of tools and materials, hardware plan, and program creation on the software. The final result is a system capable of detecting water surface level based on the ultrasonic sensor HC-SR04 and the ESP8266-12E module through telegram and buzzer communication media. The success rate of this tool system at several stages among others at a standby of 77%, at a level of alert of 70%, and the level of success at the hazard level is 83%.

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.

PREPARATION, CHARACTERIZATION AND USED OF POLYSULFONE MEMBRANES FOR THE TREATMENT OF WATER SOLUTIONS CONTAINING HUMIC ACIDS Ni Nyoman Rupiasih; Made Sumadiyasa; A.A. Ratnawati; Hery Suyanto
Jurnal Sains Materi Indonesia VOL 13, NO 1: OKTOBER 2011
Publisher : Center for Science & Technology of Advanced Materials - National Nuclear Energy Agency

PREPARATION, CHARACTERIZATION AND USED OF POLYSULFONE MEMBRANES FOR THE TREATMENT OF WATER SOLUTIONS CONTAINING HUMIC ACIDS. Polysulfone (PSf) membranes were cast by phase inversion method using PSf as matrix, N,N-Dimethylacetamide (DMAc) as solvent and distilled water as coagulant. The microporous membrane has studied using Scanning Electron Microscope (SEM) and filtration techniques. The filtration experiments were performed on a flat sheet membrane using pure water and humic acids (HA) solution as feeds. The results show, the Pure Water Flux (PWF) and Product Flux (PF) values decrease with increasing thickness of the membranes. They are consistent with the SEM images that thicker membranes have smaller pore size and less in numbers. The Rejection coefficient (R) values showthat the membranes are able to filter HA in the form of solution, with the performance dependent on the characteristics: thickness and microporous structure. They were increased with increase in the thickness of the membranes and with increase in the wavelength from 250-665 nm. It suggests that, the PSf membranes can be used to minimize the amount of Humic Acids from water process to improve the quality of treated to an acceptable quality level.

PEMANFAATAN KOTORAN SAPI SEBAGAI BAHAN BIOGAS SKALA RUMAH TANGGA ANGGOTA SUBAK BANYUMATI DESA UMA ANYAR SERIRIT BULELENG P. Suardana; M. Sumadiyasa; W. G. Suharta; A. A. Ngr. Gunawan; K. N. Suarbawa
Buletin Udayana Mengabdi Vol 16 No 1 (2017)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (232.832 KB)

Telah dilakukan sosialisasi kepada anggota masyarakat Subak Banyumati Desa Uma Anyar mengenai dampak yang diakibatkan oleh polusi gas metana yang dihasilkan dari kotoran sapi dan telah melakukan usaha pemberdayaan anggota masyarakat Subak Banyumati untuk mengembangkan sistim pertanian terintegrasi antara pertanian, peternakan, dan pemanfaatan teknologi untuk meningkatkan nilai tambah kotoran sapi melalui pelatihan “Pemanfaatan Kotoran Sapi Sebagai Bahan Biogas Skala Rumah Tangga”. Dengan terlaksananya program pengabdian masyarakat ini anggota masyarakat Subak Banyumati mampu membuat instalasi biogas skala rumah tangga hingga menghasilkan gas metana dan mengoprasikannya untuk memasak. Dengan demikian masyarakat Desa Ume Anyar pada umumnya dan anggota masyrakat Subak Banyumati pada khususnya mampu memanfaatkan kotoran sapi sebagai bahan biogas dan mampu membuat pupuk kompos dalam waktu yang lebih cepat dari sebelumnya, serta yang tidak kalah pentingnya adalah masyarakat berkontribusi mengurangi polusi udara oleh gas metana.

Influence of Nd Substitution for Ca on Formation of 2223 Phase in the Superconductors (Bi,Pb)-Sr-Ca-Cu-O System: (Bi1.4Pb0.6)Sr2(Ca2-xNdx)Cu3O10+δ M . Sumadiyasa Sumadiyasa
Jurnal ILMU DASAR Vol 8 No 1 (2007)
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (276.152 KB)

The influence of Nd substitutions for Ca on formation of 2223 phase in the superconductors (Bi,Pb)-Sr-Ca-Cu-O system : (Bi1.4Pb0.6)Sr2(Ca2-xNdx)Cu3O10+δ has been studied. Samples were made by solid state reaction methods, with sintering temperature at 860oC for 40 hours continuously in air atmosphere. From the XRD characterization it is revealed that the samples are poly crystals and the volume fraction of Bi-2223 phase is less than 45%. All of samples show Meissner effect weakly on 77 K, which is indicate that in the samples has formed few superconducting high-Tc phase. This result is in accords with of the resistivity as function of temperature measurement, show that the Tcon-set at 88 K - 107 K, which is range of the critical temperature (Tc) of the Bi-2212 phase and Bi-2223 phase.

Study on Transport Properties of Chitosan Membrane in Different Types of Electrolytes Ni Nyoman Rupiasih; Made Sumadiyasa; I Ketut Putra; Ni Made Rasmini
Journal of Mathematical and Fundamental Sciences Vol. 50 No. 2 (2018)
Publisher : Institute for Research and Community Services (LPPM) ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/j.math.fund.sci.2018.50.2.6

In this study, the electrical properties of chitosan membrane in different types of electrolytes were investigated by analyzing the current-voltage (I"‘V) curve. The membrane used was chitosan membrane 2%. The different electrolyte solutions used were KCl, HCl, MgCl2, CaCl2 and AlCl3 at concentrations of 0.025 M. The I-V experiments were done using a two-compartment cell, which contained two working electrodes made of platinum connected to a DC current source and two Ag/AgCl reference electrodes connected to a voltmeter. All experiments were conducted at an ambient temperature of 28.7 °C. Water uptake (hydrophilicity) and Fourier transform infrared (FTIR) measurements were also studied in this research. The I-V curves show the ohmic behavior of the membrane. The resistance of the membrane was higher in the electrolyte solutions with larger Stokes radii and lower in the electrolyte solutions with larger diffusion coefficients, except in the HCl solution. These results indicate that the I-V curve shapes are affected by the type of electrolyte solution used for the chitosan membrane transport. The hydrophilicity of the membrane was improved after exposure to the electrolyte solutions. The FTIR analysis revealed a new peak at about 677 cm-1, which indicates the formation of C-Cl groups in the used membranes.

Pengaruh Mikrogravitasi Pada Biji Cabai Rawit yang Telah Terpapar Radiasi UVC Terhadap Laju Pertumbuhan Tanaman Cabai Rawit (Capsicum Frutescent L.) Ni Nyoman Rupiasih; Made Sumadiyasa; Ni Kadek Gita Hari Yanti
Jurnal Fisika Indonesia Vol 21, No 2 (2017)
Publisher : Department of Physics Universitas Gadjah Mada

Telah dilakukan penelitian tentang pengaruh mikrogravitasi pada biji cabai rawit (Capsicum frutescent L.) yang telah terpapar radiasi UVC selama 1 jam terhadap laju pertumbuhan dan persentase hidup tanaman cabai. Lingkungan mikrogravitasi disimulasikan menggunakan klinostat 2-D dengan kecepatan rotasi 2,7 rpm. Biji terpapar radiasi UVC tersebut diberikan perlakuan mikrogravitasi selama 12 jam, 24 jam, dan 48 jam, yang secara berurutan disebut sampel S5, S6, dan S7. Sebagai pembanding adalah biji tanpa perlakuan (kontrol), biji dengan radiasi UVC selama 1 jam, biji dengan perlakuan mikrogravitasi selama 12 jam, 24 jam, dan 48 jam, yang secara berurutan disebut sampel S0, S1, S2, S3, dan S4. Semua kelompok sampel tersebut ditanam pada lingkungan gravitasi normal, 1 g. Penelitian ini dilakukan selama fase vegetatif (sampai umur tanaman 40 hari). Pengukuran tinggi tanaman dan jumlah tanaman hidup dilakukan setiap hari. Hasil penelitian menunjukkan bahwa perlakuan mikrogravitasi pada biji cabai yang terpapar radiasi UVC selama 1 jam memberikan pengaruh negatif atau positif terhadap laju pertumbuhan tanaman cabai rawit. Besar pengaruh bergantung pada lama perlakuan yang diberikan dan fase pertumbuhan tanaman. Pada persentase tanaman hidup, tidak terdapat perbedaan antara sampel kontrol dan sampel dengan perlakuan mikrogravitasi.

Perubahan Struktur Kristal Fase (Gd1-xLax)Ba2Cu3O7-δ dengan x Made Sumadiyasa; Nyoman Wndri; Ni Nyoman Rupiasih
Jurnal Fisika Indonesia Vol 21, No 3 (2017)
Publisher : Department of Physics Universitas Gadjah Mada

Telah dilakukan sintesis senyawa (Gd1-xLax)Ba2Cu3O7-δ dengan x £ 2,5. Sintesis dilakukan dengan metodereaksi padatan dengan pencampuran basah. Penelitian ditujukan untuk mengetahui perubahan struktur kisi kristal dari fase Gd1Ba2Cu3O7-δ jika dilakukan substitusi La terhadap Gd. Hasil sintesis dikarakterisasi dengan X-Ray Diffraction (XRD). Dengan menggunakan software Match 3, dan Rietica diperoleh bahwa pada semua sampel telah terbentuk senyawa fase Gd1Ba2Cu3O7-δ dengan struktur kristal bersimetri orthorombik. Dari perubahan nilai parameter kisi kristalnya mengindikasikan bahwa peningkatan kandungan La mengakibatkan perubahan simetri dari orthorombik menjadi tetragonal. Dari visualisasi struktur kisi kristal dapat diamati adanya perubahan posisi dari O(2) dan O(3), yaitu dengan bertambahnya kandungan La posisi O(2) dan O(3) cenderung bergeser mendekat ke arah kation Ba.

EFFECT OF COLLAGEN CONCENTRATION ON MORPHOLOGY OF PVA/CHITOSAN FIBERS MADE BY ELECTROSPINNING METHOD Ni Nyoman Rupiasih; Dewa Ayu Sukma Pranastia; Made Sumadiyasa; P. B. Vidyasagar
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 15, No 2 (2023): APRIL
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.v15i2.17665

The purpose of this study was to determine the impact of the addition of collagen concentration on morphology of PVA/chitosan nanofiber. The research was conducted by making 10% PVA solution, 2% chitosan solution, and collagen solutions with various concentrations of 2%, 4%, and 8%. The PVA/chitosan/collagen nanofibers were made with ratios of 8:2:2, 8:2:4, and 8:2:8 and were named P8/Ch2/C2, P8/Ch2/C4, and P8/Ch2/C8. As a control was PVA/chitosan with a ratio of 8:2, which was named P8/Ch2/C0. The nanofiber was made by electrospinning method with the following parameters: a voltage of 10 kV, a distance from the spinneret tip to the collector of 10 cm, and a flow rate of 1.00 µl/h. Nanofiber characterization was carried out using FTIR and SEM. SEM images were analyzed using ImageJ and Origin to measure the diameter and length of the fibers. It obtained that, the best ratio of PVA/chitosan/collagen to make a good nanofiber is 8:2:2, with the characteristics are the least number of beads and solution droplets, the most continuous fiber, and the average diameter is 145.55±8.64 nm. This result showed that, the addition of collagen can improve the morphology of PVA/chitosan nanofibers, where the characteristics of fibers made depending on the concentration of collagen added.

Studi Dosis Radiasi Berkas Foton Energi 6 MV dan 10 MV Terhadap Nilai HI dan CI pada Kasus Kanker Serviks Menggunakan Teknik Intensity Modulated Radiation Therapy (IMRT): - Sutapa, Gusti Ngurah; I Wayan Suarya; Wayan Balik Sudarsana; Ida Bagus Made Suryatika; Made Sumadiyasa; I Gusti Agung Widagda
Kappa Journal Vol 8 No 3 (2024): Desember
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/kpj.v8i3.27385

Penelitian ini menganalisis distribusi dosis radiasi foton 6 MV dan 10 MV pada pasien kanker serviks menggunakan teknik Intensity Modulated Radiation Therapy (IMRT). Tujuan penelitian adalah untuk mengevaluasi keseragaman dosis dan kecocokan dosis pada Planning Target Volume (PTV) dengan menggunakan Homogeneity Index (HI) dan Conformity Index (CI). Sampel penelitian terdiri dari 10 pasien kanker serviks yang dirawat di RSUP Prof. I G. N. G. Ngoerah Denpasar. Dosis yang diterima pasien dianalisis menggunakan Dose Volume Histogram (DVH) untuk masing-masing energi foton. Hasil menunjukkan bahwa rata-rata HI untuk energi 6 MV adalah 0,0817 dan untuk 10 MV adalah 0,0803, sementara CI untuk 6 MV dan 10 MV masing-masing adalah 0,9556 dan 0,9701. Nilai HI dan CI yang dihasilkan sesuai dengan standar ICRU Report 83, yang menunjukkan distribusi dosis yang seragam dan efektif pada PTV. Temuan ini mengindikasikan bahwa kedua energi foton dapat memberikan distribusi dosis yang optimal, dan pemilihan energi dapat disesuaikan dengan kebutuhan klinis tanpa mengurangi kualitas terapi.

Co-Authors A. A. Ngr. Gunawan A. A. Ngurah Gunawan Angelia Bella Kusumaningtyas Asni Mulyati Jeni Baskoro, Winardi Tjahyo Cory Amelia Dewa Ayu Sukma Pranastia Fahik, Gracia Paula G. Agus Permana Putra Sujana Gunawan, Tomy Gusti Ngurah Sutapa Gusti Ngurah, Sutapa Hanan Hanan Hery Suyanto I B Sujana Manuaba I G A. Putra Adnyana I G. A. Widagda I Gde Antha Kasmawan I Gede Astina I Gusti Agung Ayu Ratnawati I Ketut Putra I Ketut putra, I Ketut I Komang Wahyu Surya Permana I Nengah Artawan I Nengah Sandi I Wayan Suarya I.B.S. Manuaba Ida Ayu Putu Inten Gayatri Ida Bagus Made Suryatika Ida Bagus Made Suryatika Ida Wisnu Sari IGA Putra Adnyana Irhas, Rozi Isnaeni Isnaeni K. N. Suarbawa K. N. Suarbawa Komang Ngurah Suarbawa Maulida Nirwana Islami Muna Alfira Ni Kadek Gita Hari Yanti Ni Kadek Gita Hari Yanti Ni Kadek Nova Anggarani Ni Made Rasmini Ni Nyoman Putri Windari Ni Nyoman Rupiasih Ni Wayan Eri Sandriani Nurmalasari, Ni Putu Yuni Nyoman Wendri Nyoman Wndri P. B. Vidyasagar P. Suardana Pratama, Maulana Rizki Putra Adnyana, IGA Putu Erika Winasri Putu Ika Paramitha Putri Saputri, Izza Wahyu Saputri Septiana Ribka Purnomo Soleh, Anggun Mohamad Sukarasa, I Ketut Wayan Balik Sudarsana Wayan Gede Suharta Widagda, I Gusti Agung Windarjoto Windarjoto Wolfharditia Oktaviana Nita

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