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All Journal Rotasi Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Komunikasi Fisika Indonesia Emitor: Jurnal Teknik Elektro JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam UPEJ Unnes Physics Education Journal Journal of Innovative Science Education Indonesian Physical Review Physics Education Research Journal Physics Communication Proceeding Seminar Nasional IPA Jurnal Abdimas JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah)
Ian Yulianti, Ian
Jurusan Fisika, FMIPA Universitas Negeri Semarang, Indonesia Jl. Raya Sekaran Gunungpati-Semarang 50229
Agriculture, Biological Sciences & Forestry Astronomy Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences

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Analisis Nilai Kalor dan Laju Pembakaran Arang Cangkang Buah Karet Siti Hadijah; Azizah Mutiarani; Masturi; Ian Yulianti
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol. 6 No. 2 (2022): November Edition
Publisher : Universitas Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v6i2.787

Abstract

Rubber fruit shells are found as agricultural waste. Many farmers have not used rubber fruit shells. Therefore, the researchers made alternative fuels from rubber fruit shells containing 60-80% cellulose and 5-20% lignin. The research objective was to analyze the calorific value and burning rate of rubber fruit shell charcoal. The combustion rate test is carried out by burning charcoal and measuring how long it takes to turn into ash, and the mass of the burned ash. The heating value is done by making a simple furnace from a can filled with charcoal with a mass of 5g, 10g, 15g, 20g, 25g and 30g. 200ml of water is placed on the stove until it boils, measure the time and temperature when it boils. The result of the longest burning rate is 2.12g / minute. The heating value that results in high temperatures and large coals is 332.4 kJ. The conclusion of this study is that rubber fruit shells which have a large mass are very good to be used as an alternative fuel with a very high combustion rate and calorific value.
Dyeing Jumput Batik Using Clay Media From the Malo Region, Bojonegoro Henny Indah Pratiwi; Fianti Fianti; Ian Yulianti
Physics Communication Vol 7, No 2 (2023): August 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v7i2.41544

Abstract

Indonesian clay, with red color type was one kind of clay with wide distribution and yet to be well managed. The clay can be used as natural coloring material as a substitute for the textile dyes. This study aims to determine the effect of soaking time on the color produced and the effect of clay solution composition on the color produced. The variable used in this research is the variation of the solution composition (1kg/ 1 L, 1kg/ 2L, 1kg/ 3L) and variation of soaking time (24 hours, 48 hours, and 72 hours). The results of the research show that on the solution composition variation obtained the most concentrated color at 1kg/ 1L solution, and at the soaking time variation obtained the most concentrated color at 72 hours with the intensity of light that can penetrate the fabric is very small.
Analysis of Problem Formulation Skill of High School Students Erawarni, Dian; Wiyanto, Wiyanto; Yulianti, Ian
Physics Communication Vol 5, No 2 (2021): August 2021
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v5i2.36769

Abstract

This study aims to analyze the pattern of problem formulation skills and hypothesize students of class XI MIPA at SMAN 2 Grabag and SMA Islam Sudirman Pakis. The research design is qualitative research. The technique used in the data collection was an interview technique with 20 students and two physics teachers, as well as documentation during the research. Before the interview, the students observed 3 physical phenomena, namely (1) phenomenon 1 regarding the effect of oxygen on the flame of a candle, (2) phenomenon 2 regarding water surface pressure on razor blades and needles, (3) phenomenon 3 regarding eggs that put in various solutions with different density. The data analysis technique was qualitative analysis. Based on the research, all students were able to formulate problems according to the video of the observed phenomena, and based on the problem formulation proposed by the students found that there are three patterns of problem formulation in phenomenon 1, two patterns of problem formulation in phenomenon 2, and three patterns of problem formulation in phenomenon 3, with all problem formulation patterns proposed by students being problem formulations that correspond to each previously observed phenomenon. This shows that all students have good problem formulation skills, it can be seen that students can identify problems in each video phenomenon and ask them in the form of questions. The results showed 2 question words, those are "why" as much as 77% and the question word "what" as much as 23%. Students who formulate problems using the question word "why" can be categorized at the formal operational stage and students who formulate problems using the question word "what" can be categorized at the concrete operational stage. This difference in students' cognitive development can be a guide for teachers to use a student-focused learning model.
Recycling Surgical Mask as Acoustic Panel using Hand Lay-Up Methods Fatmala, Rita Iva; Yulianti, Ian; Fianti, Fianti
Physics Communication Vol 6, No 1 (2022): February 2022
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v6i1.33898

Abstract

The research was conducted to recycle surgical masks as acoustic panels using hand lay-up methods and to test their effectiveness in reducing noise using the tube method. The frequency used as a sound source is 495 Hz. Tests were carried out with variations in panel thickness, they are 1 cm, 2 cm, 3 cm, 4 cm, and 5 cm and three variations composite material, they are first layer, second layer and third layer of surgical mask. The panel test results show that the thicker acoustic panels are more effective in reducing noise based on the regression analysis that show the thicker panel from three variations composite material is 0.98, 0.99 and 0.96, respectively all of which are included in the very strong category. In addition, ANOVA analysis show that the thicker panels from all variation composite material respectively was 0.002, 0.001 and 0.009, they are showed the significant effect between the thickness of the panel and the effectiveness of the panel in reducing noise. Furthermore, based on the regression analysis from acoustic panels composite made of surgical masks from first layer, second layer and third layer were 8.24, 8.39 and 5.81, respectively the panel acoustic from second layer surgical masks are more effective to reduce the noise than other layer. Overall, it can be concluded that acoustic panels made of surgical masks are effective in reducing noise, as well as a solution to increasing surgical mask waste during the Covid-19 pandemic.
Quality Of Lighting In Regular And Fullday Class Tsanawiyah Miftahul Huda Tayu Pati Solichah, Solichah; Yulianti, Ian
Physics Communication Vol 6, No 1 (2022): February 2022
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v6i1.33942

Abstract

An analysis of the quality of the lighting level in the classroom needs to be carried out to determine the existing lighting level. If the level of lighting is below the specified standard, it can cause eye damage.  Meanwhile, if the level of lighting is above the standard, the classroom will be too bright. The purpose of this study was to determine the level of lighting in the Regular and Full Day classroom of  MTs. Miftahul Huda Tayu. The tools and materials used in this experiment are lux meter, roller meter and thermohygro. The experiment was carried out in the Regular class school building and the Full Day classroom building with a sample of three rooms per building with each room representing each floor. The experiment was carried out during the day for three consecutive days. There are two types of the intensity measured in this experiment, namely natural intensity (lights off) and natural artificial intensity (lights on). In each room, 9 points were taken. The floor area and window area were measured using a roller meter. From the experiments that have been carried out, it can be concluded that the lighting in the Regular class (17-73 lux) and Full Day class (97-181 lux) buildings do not meet Indonesian National standards (Standar Nasional Indonesia, SNI).
WATER QUALITY IN BANDENG FISH POUNDS IN LAMDINGIN VILLAGE BANDA ACEH Ulpha, Ramadhani Andrawina; Fianti, Fianti; Yulianti, Ian
Physics Communication Vol 5, No 2 (2021): August 2021
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v5i2.33938

Abstract

The people in Lamdingin village rely on aquaculture activities as their livelihood. The commodities cultivated in the pond are milkfish, tilapia, and shrimp. Water quality conditions have a significant role in the success of fish farming. Water as a living habitat for cultivated fish must be in optimal conditions in terms of quantity and quality. Therefore, water quality is the important factor in fish farming. This study aims to determine water quality based on parameters of brightness, temperature, salinity, and pH in milkfish ponds in Lamdingin village. Sampling and measurement were carried out at 09.00 in the morning for one week. Brightness was measured using a Secci disk, the temperature was measured using a digital thermometer, salinity was measured using digital salinity, and pH was measured using a pH meter. The results showed that the brightness, temperature, salinity and pH were 27.42 cm, 28.5 0C, 30.25 ppt and 7.42, recpectively. These results meet the Indonesian National Standard (SNI).
The Effect of Surface Color on the Absorption of Solar Radiation Paminto, Joko; Fianti, Fianti; Yulianti, Ian
Physics Communication Vol 5, No 1 (2021): February 2021
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v5i1.33885

Abstract

This research was conducted to verify the effect of the color of the object's surface on the absorption of solar radiation. The purpose of this study was to determine how the effect of surface color on the absorption of solar radiation. The activity used an acrylic box covered by stickers of various colors, placed under the sun, then measured the heat absorption of the covered liquid using a digital thermometer. The results showed that there was an effect of the color of the object's surface on the absorption of solar radiation which was indicated by the difference in the temperature increase of the covered liquid. The hypothesis can be accepted at the 95% confidence level. The order surface color of objects on the absorption level of solar heat is black, green, red, purple, yellow, pink, blue and white from the highest to the lowest.
Soil Quality Analysis for Dryland Agriculture with Variation of Fertilization and Plant Rotation in Argomulyo District, Salatiga City Nurmaya, Eka; Fianti, Fianti; Yulianti, Ian
Physics Communication Vol 6, No 1 (2022): February 2022
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v6i1.33976

Abstract

The study aim is to analyze soil quality for dryland agriculture with variations in fertilization and plant rotation in Argomulyo sub-district, Salatiga city. This study took samples on dryland agricultural land in Ledok Village by taking sample points using random sampling with a cluster sampling pattern by dividing them into 4 clusters. The Step of the research are field and laboratory observation to know the soil pH and moisture, also to determine the soil value and cation test, respectively. Next is the interview step to know the effect of fertilization and plant rotation variation. This research uses quantitative description analysis techniques. Based on the field observation was obtained the cluster 2 has pH value around 6.5 in the category slightly acidic. Then, for cluster 1,3, and has 4 neutral pH category in the range 6.6 – 7.5. The humidity of clusters in the dry category is in the range of 0 - 30%. Laboratory observation shows cluster 3 has a lower resistance around 8.1KW and has the best cation exchange capacity (CEC) test compared with other clusters. Based on the results of interviews, cluster 2 received organic fertilization and crop rotation occurred. Clusters 1 and 4 have not received any planting activity since October 2020. Meanwhile, fertilization in cluster 3 uses inorganic fertilizers. So Cluster 2 soil quality is better than the other three clusters due to organic fertilization and plans rotation so that the soil nutrients become stable. Cluster 1 has poor soil quality due to variations in inorganic fertilization, neglecting the soil, and being planted Manihot esculenta which impacted the reduction in the amount of nitrogen and phosphorus in the land.
Analysis of Physical Properties of Well Water Quality in Pasuruhan Kidul Kudus Village Fariyya, Dewi Raokhil Iklima; Yulianti, Ian; Fianti, Fianti
Physics Communication Vol 5, No 1 (2021): February 2021
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/physcomm.v5i1.33886

Abstract

Water is a natural resource that is very important for human life and other creatures. Water is used to meet various needs, including bathing, drinking, cooking, and washing. This study aimed to determine the quality of healthy water in the village of Pasuruhan Kidul Jati Kudus. One of the parameters measured for hygiene sanitation is a physical parameter. Measurement of physical parameters is the first step in analyzing water quality. In this study, several physical parameters were used to determine water quality, including temperature, turbidity, color, Total Dissolved Solid (TDS), taste, smell, and pH. This research was conducted for 7 days in three different places: home, mosque, and school. The method used in this research is to analyze the water quality of wells, mosques, and schools in Pasuruan Kidul Village. The results showed that the temperature values in the three places were around 29.4-29.6°C, the turbidity of the three places was 1 NTU, the water in all places was colorless, tasteless, odorless, the value of Total Dissolved Solid (TDS) at the three places the value is around 412.8-418.4 (mg/l), and the pH is 7.4 so that the water quality in the three places is below the maximum water quality standard threshold.
Development of Air Temperature Measurement Using LM35 Sensor Based on Nodemcu Microcontroller and Internet of Things (IoT) Nurcahya, Mufid Eska; Fianti, Fianti; Yulianti, Ian
Physics Communication Vol 5, No 1 (2021): February 2021
Publisher : Universitas Negeri Semarang

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

Abstract

The purpose of this research is to develop a real-time temperature monitoring instrument based on the Internet of Things (IoT). The research steps were design of a series of tools consisting of a Nodemcu microcontroller and an LM35 sensor, developing a tool that has been designed, testing the tool, and evaluating it. Performance analysis of the tool was carried out by measuring the relative error of the tool that has been developed with a standard thermometer. The result showed that the instrument's accuracy is 99.96% and the relative error percentage is 0.71%. It can be concluded that a room temperature measurement instrument with an IoT-based LM35 sensor can work well.
Co-Authors Abu Sahmah Mohd Supaat Agus Yulianto Aji Purwinarko, Aji Alvian, Alvian Alvian, Alvian Ani Rusilowati Arista Rahayu, Arista Aryani, Nila Prasetya Aulia Rahman Azizah Mutiarani ‘Ula, Indra Rahmatul Bambang Subali Budi A. Saputa, Budi A. Choeriyah, Hidayatul Cholis, Muhammad Ridwan Nur Dian Wahid Hermawan, Dian Wahid DWI YULIANTI Effendy, Suhardi Effendy, Suhardi - Ellianawati, Ellianawati Erawarni, Dian Falah, Syarifatul Faqih Darma Fariyya, Dewi Raokhil Iklima Fatmala, Rita Iva Fianti Fianti, Fianti Gunawan Dwi Haryadi Hartono Hartono Helvi Rumiana Henny Indah Pratiwi Hermawan, Mohamad Arif Heru Damayanti, Heru Hidayah, Rizki Roqissatul Ida Vaeruza Indra Rahmatul ‘Ula, Indra Rahmatul Insan , Shiva Maulana Khoiru Kukuh Eka Kurniansyah Kurniansyah, Kukuh Eka Laili, Nihla Nurul Leonardy, Joshu Mahardika Prasetya Aji maimanah, siti Masturi Masturi Masturi Masturi Meiarti, Devi Mohamad Arif Hermawan Mosik - Mudhofir, Faiz Mufatihah, Nishfa Mutiarani, Azizah Nadarajan, Nantha Kumar Noor Hidayah Nor Hafizah Ngajikin Nuni Widiarti Nurcahya, Mufid Eska Nurmaya, Eka Ojo Kurdi Paminto, Joko Pratiwi Dwijananti Prayogo, Defrian Putra, Ngurah Made Darma Roslan Abdul Rahman Rumiana, Helvi Samin, Pakharudin Mohd Setyono, Anton Siti Hadijah Siti Hadijah siti maimanah Siti Yulia H, Siti Solichah, Solichah Sujarwata Sujarwata, Sujarwata Sukiswo S. E, Sukiswo Sumarli, Sumarli Sunarno Sunarno Sunyoto Eko Nugroho, Sunyoto Eko Supa’at, Abu Sahmah Mohd Susilo Susilo Uding, Risnawati Ukhti Mutia Munifatuzzahroh Ulpha, Ramadhani Andrawina Ummah, Maslahatul Upik Nurbaiti Utomo, Galih R. W. P, Wasi Sakti Wiyanto - Yob, Mohd Shukri