Journal of Aceh Physics Society最新文献

{"title":"Activated Carbon Based on Chitin Derived from Tiger Shrimp Shell (Penaeus Monodon) with Self-doping Nitrogen-Oxygen for Supercapacitor Material","authors":"Rakhmawati Farma, Indira Valensia, Irma Apriyani, Awitdrus Awitdrus, Erman Taer","doi":"10.24815/jacps.v12i3.32644","DOIUrl":"https://doi.org/10.24815/jacps.v12i3.32644","url":null,"abstract":"Abstrak. Material karbon berbasis biopolimer chitin yang tersedia secara alami mendapat perhatian yang substansial sebagai sumber karbon berpori untuk elektroda sel superkapasitor. Fokus utama pada penelitian ini adalah pada karbon berpori berasal dari biopolimer Chitin berbasis cangkang udang dengan doping heteroatom beserta kompositnya dalam aplikasi sel superkapasitor. Tahap pembuatan elektroda karbon melalui proses pra-karbonisasi, aktivasi kimia KOH 0, 0,3 dan 0,5 M, karbonisasi-aktivasi fisika masing-masing dialiri gas N2 dan CO2. Selain itu, untuk menghadirkan permukaan hidrofibik dalam sistem larutan elektrolit yang dapat meningkatkan kinerja sel superkapasitor dapat dilakukan dengan pendopingan oksigen dan nitrogen secara internal. Elektroda karbon yang dihasilkan dikarekterisasi untuk menentukan sifat fisisnya seperti karakterisasi XRD dan FTIR. Analisis sifat elektrokimia sel superkapasitor untuk menentukan nilai kapasitansi spesifik dengan menggunakan metode CV dan GCD. Elektroda yang dihasilkan menunjukkan puncak landai dan beberapa puncak tajam yang mengindikasikan struktur mikrokristalin serta gugus fungsi yang mengandung oksigen dan nitrogen dengan nilai kapasitansi spesifik tertinggi sebesar 227 F/g pada laju pemindaian 1 mV/s di dalam larutan H2SO4 1 M. Studi ini memaparkan strategi yang efektif untuk pengembangan superkapasitor berkinerja tinggi secara ekonomis dari limbah biomassa berbasis chitin yang bersifat terbarukan. Abstract. Naturally available chitin biopolymer-based carbon materials are receiving substantial attention as porous carbon sources for supercapacitor cell electrodes. The main focus of this research is on porous carbon derived from shrimp shell-based Chitin biopolymer with doping heteroatoms and their composites in supercapacitor cell applications. The steps for making carbon electrodes were through a process of pre-carbonization, chemical activation 0, 0.3 and 0.5 M KOH, carbonization-physical activation, each flowed with N2 and CO2 gas. In addition, to presenting a hydrophobic surface in the electrolyte solution system which can improve the performance of supercapacitor cells can be done by doping oxygen and nitrogen internally. The resulting carbon electrode is characterized to determine its physical properties such as XRD and FTIR characterization. Analysis of the electrochemical properties of supercapacitor cells to determine specific capacitance values using CV and GCD methods. The resulting electrode showed a sloping peak and several sharp peaks indicating a microcrystalline structure and functional groups containing oxygen and nitrogen with the highest specific capacitance value of 227 F/g at a scan rate of 1 mV/s in 1 M H2SO4 solution. This study describes an effective strategy for the economic development of high-performance supercapacitors from chitin-based biomass waste which is renewable.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136010466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of Smart Packaging Film Label based on pH Sensor from Natural Source: Red Spinach for Freshness Detector of Meat","authors":"Supardianningsih Supardianningsih, Afifah Mutsla, Meisi Riana, Septia Ardiani, Bunda Amalia","doi":"10.24815/jacps.v12i3.32303","DOIUrl":"https://doi.org/10.24815/jacps.v12i3.32303","url":null,"abstract":"Abstrak. Smart packaging merupakan salah satu teknologi baru dalam bidang pengemasan yang dapat menginformasikan perubahan yang terjadi pada produk atau lingkungannya seperti suhu, pH, dan pertumbuhan mikroba. Pada penelitian ini akan dikembangkan label film smart packaging berbasis sensor pH dari sumber alami berupa ekstrak bayam merah. Dari hasil penelitian ditemukan bahwa ekstrak bayam merah dengan pH = 2 memiliki nilai serapan yang tinggi, paling asam, dan warna paling solid dibandingkan pH lainnya, dibuktikan dengan hasil UV-Vis dengan puncak tertinggi. Hasil pengujian FTIR menunjukan ekstrak bayam merah masih terdeteksi di dalam sample label film kemasan. Label film dengan konsentrasi ekstrak bayam merah 6%, 8%, dan 10% memiliki hasil uji ketebalan, kuat tarik dan elongasi yang seragam dengan rata-rata nilai untuk uji ketebalan 0,015 mm, uji kuat tarik dengan nilai 5,67 kgf/cm², dan uji elongasi 0,19%. Label film dengan konsentrasi ekstrak bayam merah 6%, 8% dan 10% memiliki warna yang solid dan menghasilkan perubahan warna yang mudah diamati. Tidak hanya itu dalam pengujian fisik, mekanik kerekteristik UV-Vis, FTIR dan perubahan warna nya label film dengan konsentrasi 6%, 8%, 10% memiliki hasil uji yang baik dan dapat diaplikasikan pada kemasan daging. Abstract. Smart packaging is a new technology in the field of packaging that can inform changes that occur in products or their environment, such as temperature, pH, and microbial growth. In this research a smart packaging film label based on a pH sensor will be developed from a natural source in the form of red spinach extract. From the research results it was found that red spinach extract with pH = 2 had the highest absorption value, the most acidic, and the most solid color compared to other pHs, as evidenced by the UV-Vis results with the highest peaks. The results of the FTIR test showed that red spinach extract was still detected in the sample packaging film labels. Film labels with red spinach extract concentrations of 6%, 8%, and 10% had uniform thickness, tensile strength and elongation test results with an average value for the thickness test of 0.015 mm, tensile strength test with a value of 5.67 kgf/cm², and 0.19% elongation test. Film labels with red spinach extract concentrations of 6%, 8% and 10% have solid colors and produce easily observable color changes. Not only that, in physical testing, mechanical characteristics UV-Vis, FTIR and changes in color, film labels with concentrations of 6%, 8%, 10% have good test results and can be applied to meat packaging.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136010464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Constructivism theory in the ISLE-based STEM approach model for wave topics in middle and high school students","authors":"Tengku Diah Zulismi Putri, Irwandi Irwandi, M. Mursal","doi":"10.24815/jacps.v12i2.32021","DOIUrl":"https://doi.org/10.24815/jacps.v12i2.32021","url":null,"abstract":"Abstrak. Proses pembelajaran di Indonesia saat ini kurang mendorong siswa dalam mengembangkan keterampilan berpikir kritis. Metode yang diterapkan umumnya bertujuan untuk mampu menjawab soal-soal yang diujiankan sehingga sedikit sekali siswa yang berani mengemukakan gagasan dan ide-ide orisinil. ISLE-based STEM merupakan salah satu model pendekatan yang mendukung pembelajaran secara kontruktivisme. Model ini mendorong siswa untuk terlibat langsung dalam proses pembelajaran dengan melakukan berbagai aktivitas fisik, sehingga membantu mereka dalam merepresentasikan penalaran kualitatif dan mengembangkan kemampuan pemecahan masalah. Metode yang digunakan dalam penelitian ini adalah deskriptif analisis kerja dan aktivitas berdasarkan penelitian tindakan kelas yang dilakukan kepada siswa kelas VIII MTS dan kelas XI MAS Dayah Daruzzahidin. Peneliti menemukan bahwa awalnya siswa mengalami kesulitan dalam memahami fenomena fisika yakni gelombang. Hasil penilaian tindakan kelas menunjukkan siswa memperoleh skor yang rendah pada kemampuan ilmiah. Peneliti mengamati siswa sering mengeluh bahwa tugas-tugas yang diberikan sulit sehingga guru perlu memotivasi siswa dengan memberikan ide-ide yang dapat memancing kemampuan berpikir siswa. Seiring berjalannya waktu, para siswa mulai terbiasa dan menjadi lebih antusias dengan kegiatan tersebut. Melalui tahapan-tahapan tugas yang harus diselesaikan pada modul, siswa berhasil mengonstruk pengetahuan tentang gelombang dan karakteristiknya dan dapat menganalisis hubungan cepat rambat gelombang tali (v), tegangan tali (F) dan massa jenis tali (µ) berdasarkan eksperimen yang dilakukan. Abstract. The learning process in Indonesia currently does not encourage students to develop critical thinking skills. The method used generally aims to be able to answer the questions being tested so that very few students dare to express original ideas. ISLE-based STEM is an approach model that supports constructivist learning. This model encourages students to be directly involved in the learning process by carrying out various physical activities, thereby helping them to represent qualitative reasoning and develop problem-solving skills. The method used in this research is a descriptive analysis of work and activities based on classroom action research conducted on students of class VIII MTS and class XI MAS Dayah Daruzzahidin. We found that students had difficulty understanding the physics of waves at first. The results of the class action assessment showed that students obtained low scores on scientific abilities. We observe that students often complain that the assignments given are difficult, so teachers need to motivate students by providing ideas that can stimulate students' thinking skills. Over time, the students began to get used to and became more enthusiastic about these activities. Through the stages of the tasks that must be completed in the module, students are successful in constructing knowledge about waves and their c","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139360656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Realtime instrumentation system towards blood oxygen saturation level monitoring with Liquid Crystal Display (LCD) and smartphone","authors":"Zakaria Husen, Zaid Albarra, Khairi Suhud, Fauzi Fauzi, Elin Yusibani, Irhamni Irhamni, Fadhli Syamsuddin, Edwar Iswardy, Nurhanif Nurhanif, Ahmad Fairuz Bin Omar, Muhammad Syukri Surbakti","doi":"10.24815/jacps.v12i2.31131","DOIUrl":"https://doi.org/10.24815/jacps.v12i2.31131","url":null,"abstract":"Abstrak. Oksigen memainkan peranan vital dalam tubuh untuk mengatur sistem peredaran darah. Namun jika kadar saturasi oksigen dalam darah (SpO2) berkurang atau tidak mencukupi maka dapat menyebabkan sesak nafas, bahkan dapat mempengaruhi fungsi kerja otak. Perangkat oksimeter digunakan untuk mengukur kadar saturasi oksigen dalam darah dengan pengukuran secara non-invasif, sehingga kekurangan oksigen dalam darah dapat dideteksi lebih awal. Oksimeter yang tersedia saat ini umumnya menampilkan hasil SpO2 tidak terhubung ke jaringan sehingga tidak dapat dipantau secara jarak jauh. Oleh karena itu diperlukan suatu perangkat yang dilengkapi dengan fitur monitoring dalam jaringan agar dapat memantau kondisi partisipan secara real-time. Penelitian ini bertujuan untuk mengembangkan sistem monitoring pengukuran saturasi oksigen dalam darah yang dapat diakses secara remote menggunakan smartphone. Alat rancangan ini menggunakan sensor MAX30100 dan NodeMCU ESP8266 sebagai mikrokontroler. Hasil pengukuran alat rancangan dapat dipantau secara real-time melalui website menggunakan aplikasi Blynk. Data pembanding yang digunakan adalah alat Oksimeter komersial. Pengujian telah dilakukan pada partisipan laki-laki berusia 14 dan 22 tahun, dan perempuan berusia 18 dan 45 tahun. Hasil pengujian secara keseluruhan menunjukkan bahwa alat yang dirancang relative sama dengan oksimeter komersial, yang ditunjukkan oleh nilai thitung ttabel. Abstract. Oxygen plays a vital role in regulating our blood circulation system. However, if the oxygen levels in the blood decrease or are insufficient, it can cause shortness of breath and even affect brain function. To address this problem, an oximeter provides an effective solution by providing a device that can measure blood oxygen saturation without having to place any device inside the body. Currently available oximeter devices usually only display the SpO2 results on the device itself. Therefore, a device with a remote monitoring feature is needed to monitor participants’ condition in real-time. This research aims to develop a remote-access blood oxygen saturation measurement monitoring system using the MAX30100 sensor and the NodeMCU ESP8266 as the microcontroller, the values can be viewed in real-time on website by the Blynk app. The comparison data used is a comercial oximeter device. The participants were the males aged 14 and 22 years, and the female aged 18 and 45 years. Herein, we found that the designed instrument shows excellent performance in which ttest ttable from overall data.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135832608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of the impact climate anomalies (ENSO and IOD) on environments based of computing in the Western Sumatra Region (Equatorial Region of Indonesia)","authors":"Melly Ariska, Adam Darmawan, Supari Supari, Muhammad Irfan, Iskhaq Iskandar","doi":"10.24815/jacps.v12i2.31167","DOIUrl":"https://doi.org/10.24815/jacps.v12i2.31167","url":null,"abstract":"Abstrak. ENSO (El Niño - Southern Oscillation) adalah bentuk anomali iklim di Samudra Pasifik yang ditandai dengan peningkatan suhu permukaan laut (SPL) di bagian Tengah dan Timur khatulistiwa. Fenomena ini memainkan peran penting dalam variasi iklim tahunan dan musiman di Indonesia, terutama di wilayah khatulistiwa Indonesia. Studi ini bertujuan untuk menganalisis dampak anomali iklim komputasi di wilayah khatulistiwa Indonesia. Metode yang digunakan dalam studi ini adalah metode regresi linier dengan membandingkan dua mesin statistik, yaitu bahasa pemrograman Python dan SPSS. Pengaruh ENSO dirasakan di beberapa daerah Indonesia yang ditandai dengan jumlah curah hujan yang lebih rendah selama tahun ENSO dibandingkan dengan sebelum dan sesudah ENSO. Peristiwa El Niño juga mempengaruhi masuknya musim kemarau dan durasinya sepanjang evolusi UNSO. Penurunan jumlah curah hujan berkorelasi negatif dengan peningkatan jumlah kebakaran hutan per tahun. Analisis curah hujan berbasis pembelajaran mesin menggunakan Google Colab dan Python memberikan hasil yang identik dengan analisis berbasis SPSS, sehingga hasil analisis berbasis pembelajaran mesin memiliki nilai yang akurat. Perubahan iklim akan menghasilkan perubahan pola iklim tahunan dan antartahunan seperti penundaan dalam awal musim hujan atau musim kemarau. Selain ENSO, juga terdapat gejala anomali iklim yang dihasilkan oleh interaksi antara laut dan atmosfer di Samudra Hindia di sekitar khatulistiwa, yang disebut IOD (Indian Ocean Dipole). Selain melihat dampak anomali iklim terhadap lingkungan, studi ini juga menguji perbandingan hubungan antara anomali perubahan iklim dan curah hujan menggunakan metode SPSS dan bahasa pemrograman Python dengan membandingkan akurasi output yang dihasilkan secara komputasi. Pengaruh IOD dan ENSO terhadap wilayah tipe hujan ekatorial tidak cukup signifikan. Hubungan antara IOD dan ENSO tidak cukup kuat untuk wilayah khatulistiwa dan tidak terjadi pergeseran pada puncak onset di wilayah ini. Abstract. ENSO (El Niño -Southern Oscillation) is a form of climate deviation in the Pacific Ocean which is characterized by an increase in sea surface temperature (SST) in the Central and Eastern parts of the equator. This phenomenon plays an important role in annual and seasonal climate variations in Indonesia, especially in the equatorial region of Indonesia. This study aimed to analyze the impact of a computational climate anomaly in the equatorial region of Indonesia. The method used in this study was the linear regression method by comparing two statistical engines, namely the Python coding language and SPSS. The influence of ENSO is felt in several areas of Indonesia which are characterized by lower amounts of rainfall during the ENSO year compared to pre- and post-ENSO. El-Niño events also affect the entry of the dry season and its duration throughout the evolution of UNSO. Reducing the amount of annual rainfall is negatively correlated with increasing the number of fores","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135802586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Petrographic study of rocks in The Julu Rayeu Formation and the Center of the Geureundong Volcanic in Nisam District, North Aceh District, Aceh Province","authors":"Dewi Sartika, Millati Amalia Sentosa, Fahri Adrian, Akmal Muhni, Dina Gunarsih, Hidayat Syah Putra, Rifqan Rifqan","doi":"10.24815/jacps.v12i2.30888","DOIUrl":"https://doi.org/10.24815/jacps.v12i2.30888","url":null,"abstract":"Abstrak. Berdasarkan kondiri geologi, Kecamatan Nisam berada pada Formasi Julu Rayeu dan Batuan Pusat Gunungapi Geureundong. Litologi yang terdapat pada Formasi Julu Rayeu terdiri atas endapan sungai, batupasir tufaan, lempung berlignit, sedangkan litologi pada Batuan Pusat Gunungapi Geureundong yaitu Breksi Andesit. Metode yang digunakan pada penelitian ini meliputi metode pemetaan geologi dan analisis petrografi. Penelitian ini bertujuan untuk mengetahui kondisi geologi dan komposisi mineral penyusun batuan pada daerah penelitian. Berdasarkan hasil penelitian yang telah dilakukan diperoleh kondisi geologi yaitu litologi terdiri dari 4 satuan batuan meliputi batupasir, batupasir tufaan, batulempung, dan endapan kolovium. Hasil analisis petrografi pada batuan beku menurut klasifikasi IUGS (1973) terdiri dari 4 sampel yaitu AU12, AU41, AU72 dan AU73 disebut Andesit, sedangkan batupasir berdasarkan klasifikasi Pettijohn (1975) terdiri dari dua sampel yaitu AU32 dan AU62 disebut Lithic Greywacke. Abstract. Based on geological conditions, Nisam District is located in the Julu Rayeu Formation and the center of the Geureundong Volcanic. The lithology found in the Julu Rayeu Formation consists of river deposits, tuffaceous sandstones, and lignite clays, while the lithology of the central rocks of the Geureundong volcano is andesite breccia. The methods used in this study include geological mapping methods and petrographic analysis. This study aims to determine the geological conditions and constituent mineral composition of the rock in the study area. Based on the results of the research that has been carried out, the geological conditions are obtained, namely lithology consisting of 3 rock units including sandstone, tuffaceous sandstone, claystone, and colluvium deposits. The results of petrographic analysis on igneous rocks according to the IUGS classification (1973) consist of 4 samples namely AU12, AU41, AU72, and AU73 called Andesite, while sandstones based on Pettijohn’s classification (1975) consist of two samples namely AU32 and AU62 called Lithic Greywacke.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135847191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Land Surface Temperature (LST) and Fault Fracture Density (FFD) Analysis in Bukit Kili-Gunung Talang Geothermal Area, West Sumatra","authors":"Muhammad Rayhan Hidayat, Jenian Marin, Rais Brian Abdurrahman, Syafa Natasya Devienna, Illya Nur Fatimah","doi":"10.24815/jacps.v12i2.31160","DOIUrl":"https://doi.org/10.24815/jacps.v12i2.31160","url":null,"abstract":"Abstrak. Daerah Bukit Kili terletak di sebelah utara Gunung Api Talang, ditandai dengan sebaran manifestasi geotermal berupa beberapa titik mata air panas. Studi bertujuan untuk mengetahui sebaran Land Surface Temperature (LST) dan Fault Fracture Density (FFD) pada daerah penelitian. Korelasi antara keberadaan manifestasi panas bumi dengan hasil analisis penginderaan jauh akan menentukan daerah potensi geotermal. Analisis dilakukan dengan citra DEM SRTM untuk menentukan densitas kelurusan dan Landsat 8 yang memiliki sensor Thermal Infrared Sensor (TIRS) di band 10 dan 11 untuk mendeteksi suhu permukaan bumi. Peta Normalized Difference Vegetation Index (NDVI) dan perhitungan nilai emisivitas dilakukan untuk menghasilkan peta LST. Hasil penelitian berdasarkan interpretasi kelurusan pada peta hillshade menunjukkan bahwa orientasi yang dominan adalah barat laut-tenggara, berkorelasi dengan struktur geologi regional. Sedangkan berdasarkan peta LST, daerah penelitian memiliki rentang suhu 14,7 – 33,4ºC. Daerah bersuhu tinggi diperkirakan akibat adanya aktivitas panas bumi yang didukung dengan keberadaan manifestasi panas bumi. Area suhu tinggi yang tidak berkorelasi dengan aktivitas panas bumi disebabkan oleh vegetasi yang rendah sebagaimana ditunjukkan dari peta NDVI.  Abstract. The Bukit Kili prospect area is located to the north of Talang Volcano, characterized by the distribution of geothermal manifestations. This study aims to determine the distribution of land surface temperature (LST) and the fault fracture density (FFD) of the research area. Correlation between the presence of geothermal manifestations with the results of remote sensing analysis will determine the geothermal potential area. The analysis was carried out using DEM SRTM to determine fault fracture density and Landsat 8 satellite which has a Thermal Infrared Sensor (TIRS) in bands 10 and 11 to detect the temperature of the earth's surface. The Normalized Difference Vegetation Index (NDVI) map and emissivity calculation are performed to generate LST map. Result based on the interpretation of lineaments using hillshade map showed that the dominant orientation is northwest-southeast, correlated with the regional structural geology. Meanwhile, LST map showed the study area had temperature range 14.7 – 33.4ºC, which high temperature areas is mainly due to the geothermal activity as supported by the geothermal manifestation occurrence. High temperature areas not correlated with geothermal activity is attributed to the low vegetation, indicated from NDVI map.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135847190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and characterization of anti-fungal paint production based on bintaro (Cerbera manghas) seed extract as additive","authors":"Astrid Nindia Putri, Delovita Ginting, Romi Fadli Syaputra, Fitra Perdana","doi":"10.24815/jacps.v12i1.27930","DOIUrl":"https://doi.org/10.24815/jacps.v12i1.27930","url":null,"abstract":"Abstrak. Penelitian ini melaporkan sintesis alkaloid dari biji bintaro (Cerbera manghas). Serbuk biji bintaro yang dihasilkan dari sintesis ekstrak biji bintaro (Cerbera manghas) dikarakterisasi menggunakan Spektroskopi Fourier Transform Infrared (FTIR) dan uji fitokimia. Spektrum FTIR hasil pengujian dari sintesis ekstrak biji bintaro menunjukkan puncak kuat pada 3239, 3338, dan 3293 cm-1 dan sudah menunjukkan hasil alkaloid. Hasil pengujian fitokimia juga telah menunjukkan terdapat senyawa alkaloid. Sintesis alkaloid yang telah diperoleh dijadikan zat aditif pada pembuatan cat. Pada penelitian ini telah berhasil dibuat cat yang berbahan dasar cat komersil untuk aplikasi kayu dengan penambahan zat aditif yaitu serbuk biji bintaro (Cerbera manghas). Pembuatan cat diperoleh dengan menggabungkan cat komersil dengan serbuk biji bintaro dengan perbandingan fraksi massa yaitu 100:0, 95:5, 90:10, 85:15. Cat pada penelitian ini diuji karakterisasinya antara lain adalah uji daya rekat, uji densitas, dan uji viskositas. Hasil penelitian menunjukkan bahwa uji daya rekat terbaik dengan fraksi massa cat: serbuk biji bintaro sebanyak 95:5 masuk dalam klasifikasi 5B dengan area terkelupas sebanyak 0,6%, pada uji densitas dan viskositas nilai yang tertinggi terdapat pada fraksi massa 100:0, nilai viskositas dan densitas masih memenuhi kategori cat kayu yaitu standar SNI 8406.6:2017 densitas cat minimal 1,2 g/ dan standar viskositas cat minimal 11,5 poise. Abstract. This study reports on the synthesis of alkaloids from the seeds of bintaro (Cerbera mangos). Bintaro seed powder produced from the synthesis of bintaro seed extract (Cerbera mangos) was characterized using Fourier Transfor Infrared Spectroscopy (FTIR) and phytochemical tests. The FTIR spectrum of the test results from the synthesis of bintaro seed extract showed strong peaks at 3239, 3338, and 3293 cm-1and already showed alkaloid results. Phytochemical test results have also shown that there are alkaloid compounds. The synthesis of alkaloids that have been obtained is used as an additive in the manufacture of paint. In this study, commercial paint-based paints for wood applications have been successfully made with the addition of additives, namely bintaro seed powder (Cerbera mangos). The manufacture of paint is obtained by combining commercial paint with bintaro seed powder with a mass fraction ratio of 100:0, 95:5, 90:10, 85:15. The paint in this study was tested for its characterization, including the adhesion test, density test, and viscosity test. The results showed that the best adhesion test with the mass fraction of paint: bintaro seed powder as much as 95:5 included in the 5B classification with a peeling area of 0.6%, in the density and viscosity test the highest value was found in the mass fraction of 100:0, the value the viscosity and density still meet the wood paint category, namely the standard SNI 8406.6:2017 paint density of at least 1.2 g/m3 and the minimum paint viscosity standard ","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136006737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of CO2 emission based on road density approach","authors":"Eri Susan Nst, Yulia Fitri, Laras Sita Widara, Fajri Fajri","doi":"10.24815/jacps.v12i1.27961","DOIUrl":"https://doi.org/10.24815/jacps.v12i1.27961","url":null,"abstract":"Abstrak. Pekanbaru merupakan kota terbesar di Provinsi Riau dengan pertumbuhan ekonomi yang pesat. Peningkatan ekonomi berpengaruh terhadap perkembangan jumlah trasnportasi kendaraan bermotor di Kota Pekanbaru. Jumlah kendaraan rata-rata meningkat sebesar 7,3% per tahun. Peningkatan sektor transportasi menjadi salah satu penyebab terjadinya kerusakan lingkungan dan pemanasan global serta menurunnya kualitas udara di wilayah perkotaan. Polusi paling dominan yang dihasilkan dari sektor transportasi yaitu karbondioksida (CO2). Tujuan penelitian ini adalah menghitung emisi CO2 dari kendaraan di Kota Pekanbaru. Metode yang digunakan untuk menghitung emisi CO2 yaitu metode IPCC 2006 Guidelines Tier 2 berdasarkan pendekatan kepadatan Jalan. Volume kendaraan didapatkan berdasarkan traffic counting di ruas jalan Kota Pekanbaru. Hasil perhitungan menunjukkan bahwa emisi tertinggi di Kota Pekanbaru berada di ruas jalan nasional yaitu sebesar 11,8 kg CO2/SMP. Penyumbang emisi CO2 di Kota Pekanbaru didominasi oleh jenis kendaraan truk dan bus. Truk menyumbang emisi sebesar 7,9 kg CO2/SMP dan bus menghasilkan emisi sebesar 6,3 kg CO2/SMP. Selanjutnya hasil penelitian juga menemukan bahwa emisi tertinggi yaitu pada hari efektif sebesar 6,84 kg CO2/SMP. Jam tersibuk yang menghasilkan nilai emisi tertinggi yaitu jam puncak sore. Emisi yang dihasilkan dengan nilai sebesar 6,48 kg CO2/SMP. Abstract. Pekanbaru is the largest city in Riau Province with rapid economic growth. The increase in the economy has affected the development of the number of motorized vehicle transportation in Pekanbaru City. The average number of vehicles increased by 7.3% per year. The increase in the transportation sector is one of the causes of environmental damage and global warming as well as declining air quality in urban areas. The most dominant pollution generated from the transportation sector is carbon dioxide (CO2). The purpose of this study was to calculate CO2 emissions from vehicles in Pekanbaru City. The method used to calculate CO2 emissions was the IPCC 2006 Guidelines Tier 2 method based on the road density approach. Vehicle volume was obtained based on traffic counting on Pekanbaru City roads. The calculation results show that the highest emission in Pekanbaru City is on the national road segment, which is equal to 11.8 kg CO2/SMP. The contributors to CO2 emissions in Pekanbaru City are dominated by trucks and buses. Trucks contribute 7.9 kg CO2/SMP and buses emit 6.3 kg CO2/SMP. Furthermore, the results of the study also found that the highest emission was on an effective day of 6.84 kg CO2/SMP. The busiest hour that produces the highest emission value is the afternoon peak hour. Emissions produced with a value of 6.48 kg CO2/SMP.","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136377948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Physical and Mechanical Characteristics of Polymeric Rooftile Added with Sisal Fibers as Fillers","authors":"Delovita Ginting, Romi Fadli Syahputra, Suci Ramadhani","doi":"10.24815/jacps.v12i1.29035","DOIUrl":"https://doi.org/10.24815/jacps.v12i1.29035","url":null,"abstract":"Abstrak. Penelitian ini bertujuan untuk membuat genteng polimer menggunakan pengisi serat sisal, pasir dan perekat limbah botol plastik polyethylene terephtalate (PET) dan aspal. Penelitian ini dilakukan untuk mengetahui karakteristik sifat fisis dan sifat mekanis genteng polimer dengan melihat pengaruh penggunaan jumlah pengisi yaitu pasir dan serat sisal. Perbandingan massa bahan yang digunakan adalah 10% aspal: 55% PET untuk variabel tetap, sedangkan variabel bebas untuk perbandingan persentase pasir dan serat sisal yaitu GP1 (0:87,5), GP2 (21,87:65,63), GP3 (43,75:43,75), GP4 (65,63:21,87), GP5 (0:87,5). Proses pembuatan dan pencetakan genteng menggunakan metode hotpress dengan tekanan 60 bar. Pengujian yang dilakukan meliputi sifat fisis yaitu kerapatan, dan daya serap air menggunakan standar ASTM C830-00, sedangkan sifat mekanis meliputi uji kuat lentur dan uji kuat tarik dengan menggunakan standar ASTM D-790. Hasil pengujian menunjukkan bahwa genteng dengan penggunaan 100% pasir menghasilkan genteng yang mudah rapuh atau getas, hal ini dikarenakan pasir memiliki ukuran butir yang lebih besar dibandingkan dengan penggunaan pengisi 100% serat sisal, namun apabila penggunaan serat sisal digabungkan dengan penggunaan pasir dengan persentase komposisi 21,87% pasir : 65,63% serat sisal maka akan menghasilkan genteng polimer yang lebih baik lagi dibandingkan genteng dengan penggunaan 100% serat sisal atau pasir. Hasil pengujian dapat disimpulkan bahwa genteng polimer yang dihasilkan telah memenuhi standar SNI baik uji fisis maupun uji mekanis kecuali pada uji tarik. Abstract. This study aimed to prepare polymer rooftile using residual fiber fillers, sand and adhesives of polyethylene terephtalate (PET) plastic bottle waste and asphalt. This study was conducted to determine the characteristics of physical properties and mechanical properties of polymeric tiles by looking at the influence of the use of the amount of filler, namely sand and sisal fibers. The mass ratio of the materials used was 10% asphalt: 55% PET for fixed variables, while the free variables for the ratio of percentage of sand and sisal fiber were GP1 (0:87,5), GP2 (21,87:65,63), GP3 (43,75:43,75), GP4 (65,63:21,87), GP5 (0:87,5). The process of making and printing tiles used the hot-press method with a pressure of 60 bar. The characterizations carried out include physical properties, density, and water absorption using the ASTM C830-00 standard, while mechanical properties include bending strength tests and tensile strength tests using the ASTM D-790 standard. The test results showed that rooftile with the use of 100% sand produce tiles that are easily fragile or brittle, this was because sand has a larger grain size compared to the use of filler 100% sisal fiber, but if the use of sisal fiber was combined with the use of sand with a percentage composition of 21.87% sand: 65.63% sisal fiber it would produce even better polymer rooftile than rooftile with the use of 100% sisal fib","PeriodicalId":31989,"journal":{"name":"Journal of Aceh Physics Society","volume":"11 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136378140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}