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All Journal Jurnal Geliga Sains: Jurnal Pendidikan Fisika Jurnal Pengabdian Kepada Masyarakat Universitas Bangka Belitung JOURNAL ONLINE OF PHYSICS Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Jurnal Fisika FLUX Journal of Applied Geospatial Information Journal of Appropriate Technology for Community Services Stannum : Jurnal Sains dan Terapan Kimia Abimanyu: Journal of Community Engagement Jurnal Riset Fisika Indonesia MINERAL Dharma Pengabdian Perguruan Tinggi (DEPATI)

Anisa Indriawati

Department Of Physics, Faculty Of Engineering, University Of Bangka Belitung, Bangka 33172, Indonesia

Author-ID : 2876600

Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Physics Social Sciences Other

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PROFIL KEPADATAN DAN ARUS PADA TASEP 2D DENGAN VARIASI PROBABILITAS INPUT DAN OUTPUT PADA JUNCTION Anisa Indriawati
Jurnal Riset Fisika Indonesia Vol 1 No 1 (2020): Desember 2020
Publisher : Jurusan Fisika, Universitas Bangka Belitung

Salah satu pemodelan yang dapat menggambarkan kepadatan kendaraan pada suatu jalan adalah Totally Asymentric Simple Exclusion Process (TASEP). TASEP merupakan suatu proses stokastik dimana partikel yang menempati sebuah kekisi akan bergerak ke kekisi tetangga terdekat selama kekisi tersebut tidak ditempati partikel lain. Pada penelitian ini telah dilakukan pemodelan TASEP 2D dengan satu input dan dua output. Hal ini bisa dianalogikan sebagai fenomena yang terjadi pada kendaraan yang memasuki sauatu jalan pertigaan. Profil kepadatan dianalisis berdasarkan perubahan input dan output. Fase yang terjadi pada penelitian ini ialah MC-LD-HD dan LD-LD. Arus maksimal terjadi ketika kepadatan partikel memiliki fase MC, dimana probabilitas maksimal arus kepadatan adalah 0.125.Salah satu pemodelan yang dapat menggambarkan kepadatan kendaraan pada suatu jalan adalah Totally Asymentric Simple Exclusion Process (TASEP). TASEP merupakan suatu proses stokastik dimana partikel yang menempati sebuah kekisi akan bergerak ke kekisi tetangga terdekat selama kekisi tersebut tidak ditempati partikel lain. Pada penelitian ini telah dilakukan pemodelan TASEP 2D dengan satu input dan dua output. Hal ini bisa dianalogikan sebagai fenomena yang terjadi pada kendaraan yang memasuki sauatu jalan pertigaan. Profil kepadatan dianalisis berdasarkan perubahan input dan output. Fase yang terjadi pada penelitian ini ialah MC-LD-HD dan LD-LD. Arus maksimal terjadi ketika kepadatan partikel memiliki fase MC, dimana probabilitas maksimal arus kepadatan adalah 0.125.

Uji Linieritas Kalium Tiosianat (KSCN) Sebagai Indikator Kolorimetri Untuk Mendeteksi Konsentrasi Fe Pada Air Azrul Fahmi; Widodo Budi Kurniawan; Anisa Indriawati
Jurnal Riset Fisika Indonesia Vol 2 No 2 (2022): Juni 2022
Publisher : Jurusan Fisika, Universitas Bangka Belitung

The method of testing water quality that is in great demand by researchers because it is practical and inexpensive, one of which is the colorimetric method. To detect the concentration of Fe using a colorimetric method used a colorimetric indicator such as potassium thiocyanate (KSCN). KSCN is a compound consisting of the elements potassium (K), sulfur (S), carbon (C), and nitrogen (N) which can produce an orange color when reacted with Fe. In this study, 20 variations of Fe solution were used with a concentration difference of 0.5 ppm starting from 0.5 ppm to 10 ppm and obtained a correlation coefficient of 0.9962 through the UV-Vis spectrophotometer test so that potassium thiocyanate (KSCN) can be used as a colorimetric indicator for detect the concentration of Fe in water.

PERENCANAAN TEKNIS OPERASI PRODUKSI BIJIH TIMAH DI BLOK 3 TAMBANG BESAR 2.1 MITRA PT TIMAH (PERSERO) TBK Awwab Hafizh; E.P.S.B Taman Tono; Anisa Indriawati
MINERAL Vol 2 No 1 (2017): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

The process of tin ore mining in TB 2.1 is conducted by channeling slurry (the mixture of ore and water) from the stock pile into the washing unit by using slurry pump. Now, TB 2.1 is planning block 3 for the operation of tin ore production proceess. Thus, a good technical planning in accordance with the characteristic of tin ore in TB 2.1 and evaluation of operating system design in Block 1 are necessary. The sample of tin ore concentrate is taken as many as 250 gr from the washing unit to detect P80 of particle size distribution (PSD) of sample. The data of sucker and pressure pipe’s lenghth, store tank’s height, quantity of primary and secondary jig and tin ore monthly production are required to furthermore plan the mining design, washing plant and equipment needs in the drying unit. Based on the research findings, It is obtained the grain size distribution of tin ore is 1.001 mm, so that the amount of lifting velocity is 3.27 m/s. Slurry pump discharge with a pipe’s diameter of 10 inches is 54 m3/hour, while total head of mining design is 30.23 m. Width of launder required is 6.5 m and equipped with two Grizzlies. Washing plant requires three units of primary Jig (2 × 3 cell) and a unit of secondary jig (2 × 3 cell). Adding rotary vibrating screen, shaking table and rod mill are necessary for process optimization in the drying unit.

Analisa Pengaruh Ground Vibration terhadap Stabilitas Low Wall Blok Muara Tiga Besar Utara Pit Timur Menggunakan Software GeoStudio 2012 di PT Bukit Asam (Persero) Tbk, Kabupaten Muara Enim Deza Pahlevi Antasari; Irvani Irvani; Anisa Indriawati
MINERAL Vol 2 No 1 (2017): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Ground vibration will produce variable Peak Particle Acceleration (PPA) which endanger the stability of the slope especially low wall. This study discusses the effect of ground vibration on the stability of the low wall and restricted in Block MTBU East Pit. While the slope analysis conducted by the method of Morgenstern-Price (1965) Manually and Software GeoStudio 2012, as well as statistical regression analysis approach in finding a relationship between the variables SD-PPA and PPA-FK. The higher the value of the PPA will lower prices Safety Factor (FK) of slope, proved to vibration FK 0.0133 g yield of 1.258 (C-C’) and 1.292 (D-D’), whereas the vibrations of 0.225 g yield of 0.771 FK (C- C’) and 0.768 (D-D’). The relationship between the scaled distance (SD) of the PPA produces non-linear relationship on a graph of power. The relationship between PPA against FK produces a linear relationship on the Section C-C’ and Section D-D’. The proposal obtained at a distance of 200 m from the blasting area 29.352 kg and at a distance of 500 m is 183.447 kg maximum load of explosives.

Optimalisasi Unit Peremukan Dalam Pencapaian Target Produksi 60.000 Ton/Bulan Batu Granit pada Pt Vitrama Properti di Desa Air Mesu Kabupaten Bangka Tengah Ahmad Reza Setiawan; E.P.S.B Taman Tono; Anisa Indriawati
MINERAL Vol 3 No 1 (2018): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Granite crushing plant in PT Vitrama Properti is divided into two units, namely primary crusher and secondary crusher with production targets at 60,000 tons/month, but production target had not been reached. Therefore, to achieve the production target, it was necessary to analyze the optimalization of the crushing process starting from the assessment of the availability, the working efficiency of the operator, the feed rate and production capacity of crushing plant by using statistical and mathematical methods. In September 2016, the actual working efficiency of primary crusher unit and secondary crusher unit were very low at 15,75 % and 24,75 % with production only amounted to 16771.49 tons/month and 16,135,59 tons/month. The efforts undertaken in order to achieve production targets are: 1) Increase the actual working efficiency in the primary crusher previously 15,75 to 83.14%, while the secondary crusher previously 24,75 % to 83.27 % 2) Increase the feed rate to the secondary crusher previously 283,44 tons/hour to 320 tons/hour.

KajianEkonomis Perencanaan Pengeboran Dan Peledakan Antara Kemitraan Dengan PT Bukit Asam (Persero) Tbk Pada Wilayah Pit II Banko Barat Di Tanjung Enim Sumatera Selatan Amri Tampubolon; E.P.S.B Taman Tono; Anisa Indriawati
MINERAL Vol 3 No 1 (2018): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

In 2017 PTBA plans to open pit mining in Banko Barat Pit II uses a system of drilling and blasting. Drilling and blasting activities aimed memberai hard material to support the process of making material by excavator-unloading With limited human resources drilling and blasting is currently assisted by partners. To get the maximum benefit with minimum cost necessary to study the cost of drilling and blasting between using the cost of services partners or self-management tool by PTBA.Planning of drilling and blasting costs PTBA version used by the method of self-management tools while the costs of drilling and blasting use the services of the partnership using the mail service offering. Geometri blasting used method R.L Ash so that would be obtained comparative cost planning and drilling and blasting between PTBA and partner services.The cost of drilling obtained using a self-management tool values obtained Rp 13.021.982.688/tahun, while using the services of the partnership obtained the value of Rp 26.472019.517/year. The cost of blasting using a self-management tool values obtained Rp 44.767.919.566/year, while using the services of the partnership obtained the value of Rp 51.750.738.054/year. The total cost of drilling and blasting self-managed appliance obtained the value of Rp 57.789.902.254/year more economical compared with services partnership with a value of Rp 78.222.757.571/year, these results show the difference in cost of Rp 20.432.855.317/year.

Analisis Kestabilan Lereng Tunggal Menggunakan Metode Fellenius dan Slide v.6.0 serta Lereng Keseluruhan dengan GeoStudio 2012 pada Pit I Banko Barat PT Bukit Asam (Persero) Tbk Tanjung Enim – Sumatera Selatan Devito Wirasto Simanjuntak; Ferra Fahraini; Anisa Indriawati
MINERAL Vol 3 No 1 (2018): MINERAL
Publisher : Jurusan Teknik Pertambangan Universitas Bangka Belitung

Slopes are a topography that is often found in opened pit mine that had been made by humans with the purpose of exploiting minerals that exist. Landslides can occur on any slopes that is formed due to the increase of shear stress, shear strength declining in the field of landslides or both simultaneously. Slope stability analysis performed to obtain the value of the safety factor of the field of potential landslides. The study conducted at a coal mine Pit 1 Banko Barat PT Bukit Asam (Persero) Tbk by comparing the value of a single slope safety factor Fellenius with manual method to Slide v.6.0 software and the overall slope safety factor with software GeoStudio 2012 From the analysis performed on a single slope 1 to 9, safety factor values obtained below 1.25 for single slopes 1 and single slope 2 to 9 above 1.25. Of the value of the safety factor is obtained, a single slope 1 in critical condition and the single slopes 2 to 9 in stable condition. While the overall slope stability analysis using GeoStudio 2012 program obtained average value of the safety factor - average is 4.57 so the slope can be declared in a stable condition. Then there are effforts to increase the safety factor (FK) of single slopes by changing a single slope geometry previously at an angle of 55 ° to 47 ° in order to obtain the condition of the slopes in a stable condition.

DESTILASI AIR TANAH SEBAGAI SALAH SATU UPAYA UNTUK MENINGKATKAN KUALITAS AIR DI DESA PENYAK KABUPATEN BANGKA TENGAH Rolan Rolan; Firza Roehafi; Julia Ambarwati; Muhammad Prayuda; Junaidi Junaidi; Yusron Yusron; Flourenchia Charolline Latupapua; Dwi Roblia Agustika; Anisa Indriawati
Dharma Pengabdian Perguruan Tinggi (DEPATI) Vol 2 No 2 (2022): November 2022
Publisher : Fakultas Teknik, Universitas Bangka Belitung

Air bersih merupakan salah satu kebutuhan pokok yang dibutuhkan bagi manusia dalam kehidupan secara berkelanjutan. Penggunaan air bersih sangat berkaitan erat dalam kehidupan sehari-hari seperti konsumsi rumah tangga, kebutuhan industri, dan tempat umum yang memang memerlukan air bersih dalam penggunaannya. Himpunan Mahasiswa Fisika dalam kegiatan Bina desa melaksanakan pembuatan destilator air dengan melibatkan warga. Pembuatan alat ini memiliki tujuan untuk bisa mengatasi permasalahan air sumur yang ada tetapi belum dimanfaatkan dengan baik sebagai sumber air bersih karena kondisi air yang keruh dan berbau menyengat. Kegiatan ini mendapatkan respon yang baik dari msyarakat karena hasil air yang didestilasi sangat jernih. Kata kunci : Bina Desa, Air, Alat Destilasi, Sosialisasi

PENELUSURAN RENDAHNYA TINGKAT VAKSIN DAN UPAYA MENINGKATKAN KETERCAPAIAN VAKSINASI COVID-19 DI DESA JADA BAHRIN, KABUPATEN BANGKA Fajar Indah Puspita Sari; Anisa Indriawati; Kamalia Layal; Salmi Salmi
Dharma Pengabdian Perguruan Tinggi (DEPATI) Vol 2 No 2 (2022): November 2022
Publisher : Fakultas Teknik, Universitas Bangka Belitung

Jada Bahrin village has an area of 56 km2, and consists of 3 hamlets. The boundaries of Jada Bahrin Village are, among others, in the north by Kimak Village, in the south by Balun Ijuk, in the west by Kemuja and in the east by Baturusa village. The majority of Jada Bahrin's livelihood is farming (80%). During the 2020-2021 pandemic, the Jada Bahrin village community was classified as having quite low awareness in the implementation of the Covid-19 Vaccination, until March 2022 the achievement rate of vaccine dose 1 was only 60% and dose 2 vaccine was only 40%. Seeing some of the existing problems, the team took several steps to help the community and village officials to overcome these problems. Some of the things that the service team did were collecting data on the number of people who had vaccinated and had not vaccinated, education was carried out through several points of view, namely from the point of view of medicine and science, education about hypertension, health consultation assistance and health screening. The search results from 84 communities showed that up to mid-July 2022, 15.5% of the people had not / did not vaccinate. 69.23% of them are not eligible for the vaccine because of illness.

The Isotherm Studies of Cu (II) Adsorption in Kolong Bangka’s Water onto NaOH-Deacetylated Shrimp Shells Waste Chitin Desy Yuliana Dalimunthe; Anisa Indriawati; Endang Setyawati Hisyam; Herman Aldila
Stannum : Jurnal Sains dan Terapan Kimia Vol 5 No 1 (2023): April 2023
Publisher : Department of Chemistry - Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jstk.v5i1.3848

Isotherm models of Cu (II) adsorption in Kolong Bangka’s water onto NaOH-deacetylated shrimp shells waste chitin was studied. The extraction of chitin was carried out through three steps: deproteinization, demineralization and decolorization. The deacetylated shrimp shells waste chitin (DA-SW chitin) were prepared by the reaction of DA-SW chitin with NaOH at varying concentrations of 20, 40 and 60% (%W) with stirring for 1 hour at room suhue where the degree of deacetylation for varying NaOH concentrations were 65.72, 67.44 and 88.98%, respectively based on our previous research. Increasing the NaOH concentration causes the diffusion rate of OH- increase thus realizing the effectiveness of OH- attack on the carbonyl carbon group in chitin acetamide increasing so that the chitin deacetylation process becomes more effective. In order to study adsorbent equilibrium behaviour, Freundlich and Langmuir isotherm models were used based on Cu (II) adsorption data with variations in contact time 5, 10, 15, 20, 25, and 30 minutes. The results showed that the concentration of Cu (II) decreased with the increase of the degree of deacetylation and contact time. The optimum condition for the percentage of Cu (II) adsorption was achieved in DA-SW chitin with NaOH 60% (where the degree of deacetylation was 88.98%) during 30 minutes was 97.19%. The Cu (II) adsorption isotherm model in Kolong Bangka water onto DA-SW chitin is represented by the Freundlich isotherm model where the Cu (II) adsorption mechanism onto DA-SW chitin causes the formation of multilayer surface which may due to Van der Waals force.

Co-Authors Ahmad Reza Setiawan Amri Tampubolon Awwab Hafizh Azrul Fahmi Desy Yuliana Dalimunthe Devito Wirasto Simanjuntak Dewi Marina Deza Pahlevi Antasari Dini Wulansari Dwi Roblia Agustika Edi Suharyadi Endang Setyawati Hisyam EPSB Taman Tono Eri Gusnia Erman Taer Fajar Indah Puspita Sari Ferra Fahraini Firza Roehafi Fitri Afriani Flourenchia Charolline Latupapua Galih Setyawan Githa Nurvilia Afni Herman Aldila Irvani Irvani Jefri Akbar Julia Ambarwati Junaidi Junaidi Layal, Kamalia Monika P Handayani Muhammad Prayuda Muhammad Sahroni Putri Hardianti Reza Firdaus Reza Firdaus Fir Daus Rifqi Almusawi Rafsanjani Rika Favoria Gusa Rolan Rolan Salmi Salmi Siska Oktaviani Siska Oktaviyani Tri Kusmita Verry Andre Fabiani Widodo B. Kurniawan Widodo Budi Kurniawan Yekti Widyaningrum Yekti Widyaningrum Yekti Widyaningrum Yuant Tiandho Yusron Yusron

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