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All Journal Natural Science: Journal of Science and Technology Gravitasi Indonesian Journal of Community Empowerment and Service Tadulako Science and Technology Journal
Anis Nismayanti
Program Studi Fisika, Fakultas MIPA, Universitas Tadulako, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Astronomy Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Physics Social Sciences Other

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STUDI UJI KARAKTERISTIK FISIS BRIKET BIOARANG SEBAGAI SUMBER ENERGI ALTERNATIF Arni, Arni; Labania, Hosiana MD; Nismayanti, Anis
Natural Science: Journal of Science and Technology Vol 3, No 1 (2014): Volume 3 Number 1 (March 2014)
Publisher : Univ. Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (212.418 KB)

Abstract

Research has been conducted the testof physical characterization biocharcoal briquettes,results of mixing charcoal and organic waste with adhesive ofsticky rice flour. This study is follow of previous study using the same material to determine the effect of variations in composition, which is then tested against moisture content, calor value, ash content and carbon content. In this study, the results of mixing biocharcoal briquettes are made in several form and then made ??the ultimate testing(moisture content), compressive strength and density of each form of briquettes.  The application of boiling water to each form variation of briquettes using briquette stove. Based on the results of physical tests conducted, found that the cylindrical briquettes providing good quality, because it has a low moisture content of 4.87 %, high compressive strength 16.2 N/m2, high density 0.50 kg/cm3and  requiredthe time of boiling water 500 ml very quickly where the temperature of coal briquettes reaches 787.9 ° C , ash 76.05 grams and efficiency52.07 %.
Rancang Bangun Prototipe Detektor Banjir Nirkabel Pada Sungai Berbasis Arduino Uno Menggunakan Sel Konduktif Rahmadi, Erwan; Nismayanti, Anis; Sesa, Elisa
Gravitasi Vol. 15 No. 2 (2016)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/gravitasi.v15i2.9429

Abstract

ABSTRAKKejadian banjir terkadang sulit dideteksi datangnya karena dapat terjadi secara tiba-tiba dan menimbulkan kerugian yang cukup besar bagi masyarakat. Untuk itu dibutuhkan suatu sistem peringatan dini banjir sebagai hal yang sangat esensial. Pada penelitian ini, dibuat prototipe pendeteksi potensi banjir pada sungai berbasis Arduino. Alat ini diharapkan mampu memonitoring tinggi permukaan air sungai yang berpotensi banjir. Alat ini terdiri dari sel konduktif, modem dan papan Arduino. Prototipe pendeteksi potensi banjir ini telah dibuat dan bekerja dengan baik. Apabila sensor konduktif terendam air maka sensor akan mengirim sinyal ke mikrokontroler. Selanjutnya mikrokontroler akan mengendalikan modem untuk mengirim SMS.Kata Kunci :  Pendeteksi banjir, arduino ,sensor konduktif, modem, SMS
Plant Watering System Design Using Soil Moisture Automatic Sensor Microcontroller Based Sen0057 ATmega328P Gani, Sitti Hardianti; Musa, Moh. Dahlan Th.; Nismayanti, Anis
Gravitasi Vol. 13 No. 1 (2014)
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/gravitasi.v13i1.4445

Abstract

It has been designed and created a plant watering system that is expected to help watering plants from a manual system to an automated system. The watering system is designed for watering plants at the right time and humidity. This tool utilizes SEN0057 soil moisture sensors to detect the level of soil moisture and ATmega328P microcontroller as the main controller. This tool is also used as a stop relay contact or disconnect from the current to flow to the pump, the LCD to display the time and the level of soil moisture and pump to drain the water. The working principle of this device when the sensor detects kelambaban ground level is less than the pre-defined limit, the microcontroller will command the process of watering until the soil moisture value equal to or greater than the pre-defined. Pepper plants as objects of research have suitable soil moisture ranging from 50% - 60%. Thus limits for soil moisture for plant watering is 3:38 volts. Watering the plant is operated at 5:45 pm and 17:45 pm.Keywords: Soil Moisture Sensor SEN0057, ATmega328P, Relays
Desain Alat Terapi Fraktur Berbasis Medan Elektromagnetik: (Design of Electromagnetic Field Based Device for Fracture Therapy) Hasmia; Maskur; Lufsyi Mahmudin; Anis Nismayanti
Gravitasi Vol. 20 No. 1 (2021):
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/gravitasi.v20i1.15453

Abstract

Fraktur adalah patah tulang yang disebabkan oleh trauma atau tenaga fisik. Permasalahan fraktur dapat menjadi besar jika tidak ditangani dengan baik. Untuk itu penyembuhan fraktur menggunakan Pulsed Electromagnetic Field (PEMF) menjadi salah satu solusi. Penelitian ini bertujuan merancang alat terapi fraktur berbasis medan elektromagnetik. Alat terapi fraktur yang dibuat menggunakan kumparan Helmholtz untuk menghasilkan medan magnet dengan variasi jumlah lilitan kawat 50 – 400 lilitan, variasi kuat arus 0,12 – 0,19 A, variasi jarak antara kumparan 5 – 25 cm, dan variasi diameter 19,8 cm dan 22 cm. Berdasarkan data yang diperoleh dapat membuktikan bahwa medan magnet berbanding lurus dengan arus dan jumlah lilitan namun berbanding terbalik terhadap jarak antara kumparan dan besar diameter kumparan. Hasil penelitian menunjukan bahwa nilai medan magnet 150 µT berhasil diperoleh dengan nilai arus 0,15 A, jumlah lilitan kawat sebanyak 300, jarak antara kumparan 10 cm, dan diameter kumparan helmholtz 19,8 cm.
Analisis Noise Level Hasil Citra CT-Scan Pada Phantom Kepala Dengan Variasi Tegangan Tabung Dan Ketebalan Irisan: (Noise Level Analysis of CT-Scan Image Results on Head Phantom with Variation of Tube Voltage and Slice Thickness) Listiyani, Iis Listiyani; Nismayanti, Anis; Maskur, Maskur; Kasman, Kasman; Ulum, M. Syahrul; Rahman, Abd. Rahman
Gravitasi Vol. 20 No. 1 (2021):
Publisher : Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/gravitasi.v20i1.15517

Abstract

Telah dilakukan penelitian analisis noise level hasil citra CT-scan pada phantom dengan variasi tegangan tabung dean variasi ketebalan irisan. Penelitian ini bertujuan untuk mengetahui dan menganalisis noise level hasil citra CT-scan pada phantom kepala dengan variasi tegangan tabung dan ketebalan irisan. Evaluasi noise level harus dilakukan sehingga dapat mengurangi noise pada CT-scan dan phantom kepala air. Nilai noise level diperoleh dengan variasi tegangan tabung (80-140) kV dan ketebalan irisan (1-10) mm. Hasil noise level pada variasi tegangan tabung berkisar (0,72-2,97)%. Sedangkan noise level pada variasi ketebalan irisan berkisar (0,97-2,97)%. Hasil penelitian nilai noise level hasail CT-scan dengan variasi tegangan tabung dan ketebalan irisan maka dapat disimpulkan bahwa hasil citra ct-scan terbaik diperoleh pada tegangan tabung 120 kV dan ketebalan irisan 5 mm. kata kunci : Noise, Ct-Scan, Phantom, Data Sekunder, Tegangan Tabung, Ketebalan Irisan
Pelatihan Penggunaan Alat Ukur Dasar Bagi Siswa Kelas X SMA IT Al Fahmi Palu Sitti Rugayya; Iqbal; Anis Nismayanti; Sandra Kasim; Lulu Syamsiah
Indonesian Journal of Community Empowerment and Service (ICOMES) Vol. 2 No. 2: December 2022
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (344.892 KB) | DOI: 10.33369/icomes.v2i2.25507

Abstract

Ilmu Fisika tidaklah terlepas dari kegiatan eksperimen yakni pengamatan dan pengukuran. Hal ini bertujuan untuk menambah pengetahuan serta keterampilan dalam memahami ilmu Fisika dan juga untuk mendukung capaian dari kurikulum yang berlaku. Siswa kelas X sekolah tingkat menengah telah dibekali pembelajaran ilmu Fisika secara teori mengenai pengukuran. Peningkatan pemahaman mengenai pengukuran sebaiknya dilakukan kegiatan pengukuran secara langsung menggunakan beberapa alat ukur dasar yaitu jangka sorong, mikrometer sekrup, dan neraca o’haus. Kegiatan ini dilakukan dengan metode pendekatan saintifik yakni pelaksanaan pengabdian mengandung unsur pengetahuan di bidang keilmuan Fisika. Sebanyak 45 orang peserta mengikuti kegiatan ini yang berasal dari SMA IT AL Fahmi Palu. Hasil dari kegiatan ini menunjukkan adanya peningkatan pemahaman dan keterampilan siswa dalam penggunaan alat ukur dasar berdasarkan keberhasilan siswa melakukan pengukuran secara mandiri. Hal ini dibuktikan dengan hasil penilaian yang diperoleh rata-rata 92,7 yang menunjukkan kriteria sangat baik.
Effect of Eco Enzyme on Television Electromagnetic Radiation Nurhamida; Anis Nismayanti; Sitti Rugayya; M. Syahrul Ulum; Kasman; Maskur
Tadulako Science and Technology Journal Vol. 5 No. 1 (2024): Tadulako Science and Technology Journal
Publisher : LPPM Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/sciencetech.v5i1.17177

Abstract

Research has been carried out on the effect of eco enzymes on television electromagnetic radiation. This research aims to determine the amount of electromagnetic radiation on live television before and after using an eco enzyme. Measurements were made of the amount of electromagnetic radiation from the television when it was off, and the television when it was on before and after using eco enzyme, using 2 types of eco enzyme (pineapple eco enzyme and organic material eco enzyme) with a volume of 1 liter (for 1 bottle) and 2 liters (for 2 bottles). The position of the eco enzyme with the surface of the bottle cover open is placed in front of the television screen at a measuring distance of 25 cm, 50 cm, 75 cm, 100 cm, 125 cm, 150 cm, 175 cm, and 200 cm. Television electromagnetic radiation in the form of the highest electric field and magnetic field when the television is on before using eco enzyme at a measuring distance of 25 cm respectively is 30 V/m and 0.22 μT. After using the eco enzyme, the highest reduction in electromagnetic radiation occurred at a measurement distance of 25 cm. Treatment using 2 liters of pineapple eco enzyme can reduce television electromagnetic radiation in the form of electric fields and magnetic fields respectively, namely 6 V/m and 0.18 μT. In the treatment using eco enzyme, a variety of organic materials with a volume of 2 liters can reduce television electromagnetic radiation in the form of electric fields and magnetic fields respectively, namely 7 V/m and 0.19 μT.
Co-Authors Arni Arni Elisa Sesa Hasmia Hosiana MD Labania Iqbal Kasman Kasman Kasman Listiyani, Iis Listiyani Lulu Syamsiah M. Syahrul Ulum Mahmudin, Lufsyi Maskur Maskur Maskur Moh Dahlan Th Musa Muhammad Syahrul Ulum Nurhamida Rahmadi, Erwan Rahman, Abd. Rahman Sandra Kasim Sitti Hardianti Gani, Sitti Hardianti Sitti Rugayya