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All Journal Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Riset dan Kajian Pendidikan Fisika Jurnal Pendidikan Fisika Indonesia JURNAL FISIKA Rekayasa: Jurnal Penerapan Teknologi dan Pembelajaran Emitor: Jurnal Teknik Elektro Journal of Natural Sciences and Mathematics Research JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Jurnal Penelitian Sains EnviroScienteae JRST (Jurnal Riset Sains dan Teknologi) Jurnal Pengelolaan Laboratorium Pendidikan Jurnal Pendidikan Fisika dan Teknologi UPEJ Unnes Physics Education Journal Jurnal Fisika : Fisika Sains dan Aplikasinya Jurnal Teori dan Aplikasi Fisika Jurnal Inovasi Teknik Kimia Physics Education Research Journal Jurnal Penelitian Fisika dan Terapannya (JUPITER)
Upik Nurbaiti
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Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics

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Pengaruh Jumlah Komputer terhadap Tingkat Radiasi Elektromagnetik dan Dampak Kesehatan Manusia dalam Lingkungan Teradiasi Mohamad Arif Hermawan; Upik Nurbaiti; Ian Yulianti
Emitor: Jurnal Teknik Elektro Vol 21, No 1: Maret 2021
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/emitor.v21i1.13001

Abstract

Perkembangan teknologi membuat banyak perubahan dalam berbagai bidang dan sektor aktivitas manusia. Penggunaan teknologi seperti komputer yang berlebihan dapat menyebabkan masalah kesehatan yang ditimbulkan karena pada komputer selain menampilkan gambar dan teks pada monitor komputer yang sedang digunakan juga mengeluarkan radiasi dan gelombang elektromagnetik yang tidak dapat dideteksi oleh indra mata. Penelitian ini bertujuan untuk mengetahui pengaruh jumlah komputer terhadap tingkat radiasi elektromagnetik dan dampak Kesehatan. Hasil penelitian tingkat radiasi elektromagnetik yang ditimbulkan oleh beberapa jumlah komputer menunjukkan radiasi elektromagnetik sebesar 0.037 mT sampai 0,051 mT. Tingkat radiasi warung internet di desa Jatibarang dengan jumlah komputer 7 unit masih tergolong aman untuk manusia atau pengunjung warung internet.
The effect of drying temperature on the characteristics of biodegradable plastic from Cassava pulp and Chitosan Adina Widi Astuti; Agus Yulianto; Upik Nurbaiti
Journal of Natural Sciences and Mathematics Research Vol 7, No 1 (2021): June
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/jnsmr.2021.7.2.8389

Abstract

Conventional plastics made from polyethylene (PE), polypropylene (PP), polyvinylchloride (PVC), polystyrene, and poly (ethylene terephthalate) are difficult to decompose. Bioplastics can reduce the amount of toxic waste generated from biological materials other than petroleum.  The combination of cassava pulp and chitosan can be used as a candidate for the manufacture of biodegradable plastics. The optimal drying temperature can produce biodegradable plastics that have good quality. The method used to determine the effect is the mechanical properties test with ASTM D-638M standard and degradation test. The results of this study obtained 6 samples of biodegradable plastic with variations in temperature A=40˚C, B=50˚C, C=60˚C, D=70˚C, E=80˚C and F=90˚C. From the results of the mechanical properties test, the tensile strength values of each sample are A = 0,84 MPa, B = 1,78 MPa, C = 2,24 MPa, D = 1,58 MPa, E = 1,23 MPa and F =0,57 MPa. While the percent elongation value of each sample is A = 11,09%, B = 21,62%, C = 30,25%, D = 15,94%, E = 13% and F = 7,2%. The drying temperature in the process of making biodegradable plastics can affect its mechanical properties, namely the higher the drying temperature used, the lower the tensile strength value and the percent elongation, this is because high temperatures can damage the chemical structure and evaporated sorbitol which serves to increase flexibility. The higher the drying temperature also causes the biodegradable plastic to take longer to degrade. Sample A with the lowest temperature degraded the fastest for 28 days, while sample F with the highest temperature degraded the fastest for 46 days.©2021 JNSMR UIN Walisongo. All rights reserved.
Study of Sun Protection Factor (SPF) Batik Textile Fabric on Solar Radiation in Pekalongan Yeni Rima Liana; Fianti Fianti; Upik Nurbaiti
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 11 No. 1 (2021)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v11n1.p39-49

Abstract

The amount of sunscreen ability is determined through the value of a person's Sun Protection Factor (SPF) when under the sun without experiencing sunburn. This study aims to measure the intensity of sunlight received by batik textile fabrics and SPF measurements to determine the ability of these fabrics to protect sunlight radiation. The research was conducted at the Sorogenen area in Pekalongan, Central Java. The intensity data collection is done during the sunny weather with 300C - 320C temperature. The SPF value is calculated by comparing the intensity of sunlight without and with a protective batik cloth. Between 10:00 a.m. and 2:00 p.m. (GMT +7), the average intensity is 85.160 lux to 113.400 lux. The results obtained by fabric with a thickness of 2 mm have an SPF greater than fabric with a thickness of 1 mm. Cotton fabric has the ability to protect against sunlight better than satin and Mori fabric. A blue cotton cloth owns the most significant SPF value with a thickness of 2 mm of 36.06. In comparison, the smallest SPF value is owned by yellow Mori fabric with a thickness of 1 mm of 5.24.
Pengaruh Spektrum Cahaya Terhadap Perkecambahan Kacang Hijau (Vigna radiata) Dwi Indah Lestari; Laily Nur Azizah; Khoiru Ainin Nisa; Upik Nurbaiti; Fianti Fianti
Jurnal Penelitian Fisika dan Terapannya (JUPITER) Vol 3, No 1 (2021): Jurnal Penelitian Fisika dan Terapannya (JUPITER)
Publisher : Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/jupiter.v3i1.5986

Abstract

Tanaman kacang hijau termasuk suku polong polongan fabaceae yang memiliki manfaat sebagai sumber bahan pangan berprotein nabati tinggi dan merupakan salah satu komoditas pangan ketiga setelah kedelai dan kacang tanah. Tujuan dari penulisan artikel ini adalah untuk menentukan spektrum warna yang efektif untuk mempercepat pertumbuhan benih tanaman kacang hijau melalui indikasi panjang batang, jumlah dau, serta perhitungan panjang gelombang spektrum yang digunakan selama 4 hari penelitian. Data didapatkan diolah dalam bentuk tabel dan grafik pertumbuhan batang dan banyaknya daun yang dihasilkan oleh benih kacang hijau. Hasil dari analisis data menyatakan bahwa spektrum warna merah merupakan spektrum yang paling efektif untuk pertumbuhan tanaman dibanding dengan spektrum warna jingga, hijau maupun biru.
Pembuatan dan Karakterisasi Sifat Fisis Komposit Multilayer Serat Rami Naila Hilmiyana Syifa; Agus Yulianto; Upik Nurbaiti
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 7 No 2 (2021): Juli-Desember
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v7i2.2783

Abstract

The use of composites as an innovative new material is increasing. Composites are made from two or more materials that have different properties. This research was conducted to make multilayer composites and determine the effect of variations in the number of arrangements and the direction of the fiber angles on the physical properties of composites made from ramie fiber and epoxy. The physical properties of the composites analyzed in this study were density, porosity, water absorption, and thickness expansion. The composites in this study were made using the hand layup method with a volume fraction ratio of 30% and the ratio of epoxy and hardener was 2: 1. Before the composite was made, ramie fibers were soaked in 5% NaOH for 2 hours. This study succeeded in making epoxy ramie multilayer composites with variations in the number of arrangements and the direction of the fiber angles. Variations in the number of layers and the direction angle of the ramie fiber in the composite affect the density and porosity of the composite. Variations in the direction of the ramie fiber in the composite affect the water absorption of the composite. Variations in the number and direction of ramie fiber in the composite did not significantly affect the thickness of the composite.
ANALISIS MATERIAL SERAT ALAM TEBU SEBAGAI BAHAN PEREDAM SUARA Billy Cessar Bimara; Aulia Rahma Azizah; Tri Anita Wulansari; Upik Nurbaiti; Fianti Fianti
Jurnal Fisika : Fisika Sains dan Aplikasinya Vol 6 No 2 (2021): Jurnal Fisika : Fisika Sains dan Aplikasinya
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/fisa.v6i2.6839

Abstract

Abstract Material Sugarcane natural fiber material can be used as a sound absorber material. In measuring the value of the sound absorption coefficient of the cane natural fiber silencer using the sound level meter application on the smartphone to measure the intensity of sound (dB) and the frequency generator application connected to the speaker as a sound source (Hz). The test uses an acoustic box as a miniature room that will be tested for its sound absorption coefficient values coated with sugarcane natural fibers. The purpose of this study is to find out the influence of sugarcane fibers in reducing noise and to find out the effect of frequency variations on the value of the sound absorption coefficient. Measurement of the noise level of the sugarcane natural fiber material on the acoustic wall produces different sound absorption coefficient values based on variations in the frequency of the sound source. The greater the frequency value, the higher the absorption coefficient value. Frequency variations used include 500 Hz, 1000 Hz, 1500 Hz, 2000 Hz, 2500 Hz, and 3000 Hz. The value of the sound absorption coefficient drops at a frequency of 1000 Hz but there is a re-increase at frequencies above 1500 Hz. The smallest sound absorption coefficient is obtained at the time of frequency 1500 Hz with a value of = 0.01047 and the largest at the time of frequency 3000 Hz with a value of = 0.10139. The coefficient value is too small, so it is not effective in muffling the sound.
PENGARUH RADIASI MATAHARI PADA AIR LAUT TERHADAP DAYA YANG DIHASILKAN SEBAGAI SUMBER ENERGI ALTERNATIF Eva Meutia; Upik Nurbaiti; Fianti Fianti
EnviroScienteae Vol 17, No 1 (2021): ENVIROSCIENTEAE VOLUME 17 NOMOR 1, APRIL 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v17i1.11350

Abstract

Indonesia with a country that has a tropical climate and a very large intensity of solar radiation so that it can be developed into an alternative energy source by utilizing sea air. The purpose of this research is whether there is an effect of solar radiation on sea air on the power it produces as an alternative energy. Seawater as much as 300ml is put into a square glass container and paired with a series of Cu - Zn, Cu - Al, and Al - CuZn electrode plates with a cross-sectional area of 15cm2 of each electrode and connected to a red LED light to see how much power is generated by sea water after being exposed to solar radiation at different temperatures and times. Data obtained at the highest temperature of 33°C and the duration of exposure to solar radiation for 60 minutes in the 6th experiment with a variation of Cu - Zn electrodes with an electric power of 1,44 J/s, the lights are brightly lit, Cu - Al with electric power of 1,22 J/s of dim light, and Al - CuZn obtained electric power of 0,65 J/s. So it is concluded that the longer the sea water is exposed to solar radiation, the higher the temperature is due to the more heat stored in sea water. The conclusion was drawn that the higher the sea water temperature, the electric power produced, the higher the electric power generated and the lights can light up brightly at certain electrodes.
Pengaruh Warna Dan Bentuk Lampu Terhadap Tingkat Kenyamanan Manusia Di Ruang Tidur Anisa Furtakhul Janah; Upik Nurbaiti; Fianti Fianti
EnviroScienteae Vol 16, No 1 (2020): EnviroScienteae Volume 16 Nomor 1, April 2020
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v16i1.8994

Abstract

The purpose of this study was to study the effect of various light colors and shape on light intensity and visual contentment levels. This research was experimental research consisting of two variables consisting of light colors with four colors: red, yellow, green, and blue, and three different lamp shapes: round, spiral, and essential. The lamp used for color variations had a power of 2.5 watts, while the lamp used for variations in shape had a power of 5 watts. The parameters studied in this study were the lighting and the light intensity produced. The data analysis technique used in this study contained the value of light intensity and the percentage of visual contentment levels obtained from the questionnaire results. The results showed that the yellow light had the highest light intensity of 40 CDs, this result was supported by a questionnaire that showed the contentment level of respondents in the bedroom using a yellow light was 70%. Round lights have the highest intensity because they did not produce a luminous effect, thus producing very little lamp energy waste.
EFEKTIVITAS PENGGUNAAN SENSOR MQ-7 TERINTEGRASI APLIKASI BLYNK UNTUK MENDETEKSI KEBERADAAN GAS CO DI UDARA Mugi Lestari; Upik Nurbaiti; Fianti Fianti
EnviroScienteae Vol 17, No 1 (2021): ENVIROSCIENTEAE VOLUME 17 NOMOR 1, APRIL 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v17i1.11358

Abstract

The development of industry and human living system recently bring effect toward the air quality. Carbon monoxide (CO) which is one of the air pollutant produced by the imperfect ignation which contain carbon of industry, vehicles, and other activities. The existance of carbon monoxide (CO) which is difficult to recognize because of it’s characters which are colourless, cannot be felt or tasteless, cannot be smelt or have no smell, cannot be seen by bare eyes, it means that it needs a tool to help human detect the existance of carbon monoxide. This importance of detector tool of carbon monoxide is because carbon monoxide is quite dangerous for human health if it’s degree is over the limit. There are quite cases of poisoned people who finally died. In this research, the effectiveness test of the use of MQ-7 censor which is integrated with the Blynk application compared with the CO-meter is done. The result shows that MQ-7 is effective to be used in detection and measurement the degree of CO in the air. The integration with Blynk application on the smartphone helps researcher to do the monitoring from everywhere, as long as it is connected to the internet. The price which is more economical also becomes one of the considerations, so CO detector by using MQ-7 censor inegrated with the Blynk application can be done by many groups of society, either industries or individuals.
ANALISIS KENYAMANAN SUHU RUANG Allif Silfiyana Rohman; Upik Nurbaiti; Fianti Fianti
EnviroScienteae Vol 17, No 1 (2021): ENVIROSCIENTEAE VOLUME 17 NOMOR 1, APRIL 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/es.v17i1.11346

Abstract

Global warming causes the earth's temperature to increase, making humans reduce outdoor activities and spend a lot of time indoors. Temperature that is too hot or cold cause discomfort to the users of the room. Based on the description of the problem, the researcher will analyze the thermal comfort of the room. The method used in this research is a survey using the Hygrometer Thermometer HTC-2 to obtain data on indoor and outdoor temperature and humidity at certain times. This study took data using the Hygrometer Thermometer HTC-2 four times in one day. The results showed that room temperature comfort was obtained at a temperature range of 27 °C to 29 °C. Then the comfort level is based on the highest time at 06.00 - 09.00 WIB with an average temperature at that time of 27.75 °C.
Co-Authors Adhitya Agung Pribadi Adina Widi Astuti Agus Yulianto Agus Yulianto Ahmad Minanur Rohim Allif Silfiyana Rohman Allif Silfiyana Rohman Anggita Kharisma Dewi Anisa Furtakhul Janah Arofah, Sitta Khusniati Aulia Rahma Azizah Billy Cessar Bimara Dewi, Anggita Kharisma Didik Aryanto Didik Aryanto Dwi Indah Lestari DWI YULIANTI Ellianawati, Ellianawati Etik Irawati Eva Meutia Febriani, Marosyana Ayu Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti Fianti, Fianti Gita Ayu Permatasari H, S.S. Dewanti Hermawan, Mohamad Arif Ian Yulianti Ian Yulianti Ian Yulianti, Ian Ika Vidiasari Aristawati Ika Vidiasari Aristawati Khoiru Ainin Nisa Khumaedi - Khumaedi Khumaedi Laily Nur Azizah Mohamad Arif Hermawan Mugi Lestari Mutia Hariza Lubis Mutia Hariza Lubis Naila Hilmiyana Syifa Natalia Erna Setyaningsih Rodhotul Muttaqin Rohim, Ahmad Minanur Siti Wahyuni Sitta Khusniati Arofah Sutikno Madnasri Swastika Ramadhanty Eka Putri Tri Anita Wulansari Yeni Rima Liana Yulita Nurbaiti Zayyinul Mushthofa