Articles
<![CDATA[2D Interpretation of Subsurface Hot Spring Geothermal Structure in Nyelanding Village Through Schlumberger Geoelectricity Configuration Method ]]>
<![CDATA[Siregar, Rahmat Nawi]]>;
<![CDATA[Kurniawan, Widodo Budi]]>
<![CDATA[ Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 7, No 1 (2018): Jurnal Ilmiah Pendidikan Fisika Al-Biruni ]]>
Publisher : <![CDATA[UIN Raden Intan Lampung, Indonesia ]]>
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DOI: 10.24042/jipfalbiruni.v7i1.2324
<![CDATA[This research was done on the subsurface structure of Nyelanding village hot spring, Air Gegas district, South Bangka with coordinates 2 44â54.514â South Latitude and 106 16â6.773â East Longitude using the Schlumberger geoelectricity configuration method. Measurements were made on three different tracks. The results of the Schlumberger configuration geoelectricity measurements for the three trajectories indicate the presence of granite rock distribution with resistivity values ranging from 455 â 1046 m.]]>
<![CDATA[RANCANG BANGUN ALAT PENGERING OTOMATIS KERUPUK KEMPLANG DI DESA PENYAK ]]>
<![CDATA[Widodo Budi Kurniawan]]>;
<![CDATA[Fitri Afriani]]>;
<![CDATA[Herman Aldila]]>;
<![CDATA[Yuant Tiandho]]>
<![CDATA[ Kumawula: Jurnal Pengabdian Kepada Masyarakat Vol 4, No 1 (2021): Kumawula: Jurnal Pengabdian Kepada Masyarakat ]]>
Publisher : <![CDATA[Universitas Padjadjaran ]]>
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DOI: 10.24198/kumawula.v4i1.30037
<![CDATA[Kegiatan pengabdian berupa Iptek bagi Masyarakat (IbM) merupakan salah satu penerapan Tri Dharma Perguruan Tinggi. Dengan adanya kegiatan pengabdian IbM, maka diharapkan akademisi dapat berinteraksi secara langsung dengan masyarakat. Lokasi yang menjadi sasaran kegiatan IbM adalah Desa Penyak Kecamatan Koba Kabupaten Bangka Tengah yang mayoritas mata pencaharian penduduknya adalah sebagai nelayan atau petani. Hasil tangkapan nelayan sebagian diolah menjadi kerupuk kemplang. Masalah yang muncul adalah bahwa proses pengeringan masih menggunakan cara tradisonal yaitu melalui penjemuran secara langsung di bawah terik matahari, sehingga proses pengeringan masih bergantung pada cuaca. Salah satu upaya untuk membantu masyarakat, khususnya kalangan kelompok usaha mikro di bawah naungan Badan Usaha Milik Desa (BUMDes) di Desa Penyak dalam mengatasi permasalahan pengeringan kerupuk kemplang adalah melalui sosialisasi pengeringan kerupuk kemplang menggunakan alat pengering otomatis. Kegiatan sosialisasi akan dilanjutkan dengan transfer teknologi tepat guna dan penyerahan alat pengering otomatis sehingga masyarakat dapat memanfaatkan teknologi tersebut secara langsung untuk meningkatkan kualitas produksi kerupuk kemplang. Hasil evaluasi menunjukkan bahwa kegiatan sosialisasi dan penyerahan alat pengering otomatis dimanfaatkan dengan baik dan bermanfaat bagi masyarakat.]]>
<![CDATA[2D Interpretation of Subsurface Hot Spring Geothermal Structure in Nyelanding Village Through Schlumberger Geoelectricity Configuration Method ]]>
<![CDATA[Rahmat Nawi Siregar]]>;
<![CDATA[Widodo Budi Kurniawan]]>
<![CDATA[ Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 7, No 1 (2018): Jurnal Ilmiah Pendidikan Fisika Al-Biruni ]]>
Publisher : <![CDATA[Universitas Islam Negeri Raden Intan Lampung, Indonesia ]]>
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DOI: 10.24042/jipfalbiruni.v7i1.2324
<![CDATA[This research was done on the subsurface structure of Nyelanding village hot spring, Air Gegas district, South Bangka with coordinates 2 44’54.514” South Latitude and 106 16’6.773” East Longitude using the Schlumberger geoelectricity configuration method. Measurements were made on three different tracks. The results of the Schlumberger configuration geoelectricity measurements for the three trajectories indicate the presence of granite rock distribution with resistivity values ranging from 455 – 1046 m.]]>
<![CDATA[The Potential of Pepper Shell (Piper Nigrum) for Supercapacitor Electrodes ]]>
<![CDATA[Widodo Budi Kurniawan]]>;
<![CDATA[Anisa Indriawati]]>;
<![CDATA[Dewi Marina]]>;
<![CDATA[Erman Taer]]>
<![CDATA[ Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 8, No 1 (2019): Jurnal Ilmiah pendidikan Fisika Al-Biruni ]]>
Publisher : <![CDATA[Universitas Islam Negeri Raden Intan Lampung, Indonesia ]]>
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DOI: 10.24042/jipfalbiruni.v8i1.3780
<![CDATA[A study has been carried out on supercapacitor electrodes as an electrical energy storage media based on pepper shell activated carbon. The Synthesis is done by mixing the waste carbon pepper shell with an activator HCl with a ratio of 1 : 4. Furthermore, the activated carbon is activated physically by using a pyrolysis temperature of 600 0C. The SEM results indicate that carbon has a porous morphology with a pore size of 24.6 nm which is a mesoporous category. Electrochemical properties are analyzed using cyclic voltammetry (CV). The CV results at the scan rate of 1 mV/s indicate the specific capacitance value generated is 0.45 Fg-1. The results showed that pepper shell waste has the potential to be used as a supercapacitor electrode material]]>
<![CDATA[PENGUKURAN NILAI DIELEKTRIK MATERIAL CALCIUM COPPER TITANAT ( CaCu3Ti4O12) MENGGUNAKAN SPEKTROSKOPI IMPEDANSI TERKOMPUTERISASI ]]>
<![CDATA[Widodo Budi Kurniawan]]>
<![CDATA[ Jurnal Sains Dasar Vol 6, No 1 (2017): April 2017 ]]>
Publisher : <![CDATA[Faculty of Mathematics and Natural Science, Universitas Negeri Yogyakarta ]]>
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DOI: 10.21831/jsd.v6i1.13565
<![CDATA[Telah dilakukan pengukuran tetapan dielektrik kompleks dan besarnya impedansi kapasitor pada material keramik Calcium Copper Titanate dengan struktur material CaCu3Ti4O12 (CCTO) dengan kemurnian 99 % menggunakan metode spektroskopi impedansi terkomputerisasi dalam rentang frekuensi 5 kHz – 120 kHz. Tetapan dielektrik maksimum terukur pada sampel yang disintering dengan suhu 7000C yaitu 745 pada frekuensi 5 kHz dan besarnya impedansi kapasitor maksimum terjadi pada sampel CCTO non sintering yaitu 150434 Ω. Hasil penelitian menunjukkan adanya pengaruh frekuensi terhadap tetapan dielektrik kompleks dan impedansi kapasitor dari material yang diteliti. Kata kunci : spektroskopi impedansi, CaCu3Ti4O12, tetapan dielektrik kompleks dan impedansi kapasitor. MEASUREMENT OF THE DIELECTRIC CONSTANT CALCIUM COPPER TITANATE (CaCu3Ti4O12) MATERIALS USING COMPUTERIZED IMPEDANCE SPECTROSCOPY ABSTRACT The measurement of the complex dielectric constant and the magnitude of the capacitor impedances of the ceramic materials Calcium Copper Titanate CaCu3Ti4O12 (CCTO) with purity of 99% has been done by using the method of computerized impedance spectroscopy in the frequency range 5 kHz - 120 kHz. The highest dielectric constant of the material was found to be 745 at 5 kHz in the sample sintered 7000C and the highest impedance of capacitor occured in CCTO sample non sintered that is 150434Ω. The results showed that complex dielectric constant and impedance of the capacitor of the material under study was frequency dependent. Keywords : impedance spectroscopy, CaCu3Ti4O12,complex dielectric constant and impedance of capacitor]]>
<![CDATA[THE EFFECT OF TRAINING USAGE OF ELECTRIC MEASURING INSTRUMENTS TO STUDENT PERFORMANCE ASSESSMENT IN THE BASIC PHYSICS EXPERIMENT 2 COURSE ]]>
<![CDATA[Ernidawati Ernidawati]]>;
<![CDATA[Dina Syaflita]]>;
<![CDATA[Naila Fauza]]>;
<![CDATA[Widodo Budi Kurniawan]]>
<![CDATA[ Jurnal Geliga Sains: Jurnal Pendidikan Fisika Vol 7, No 2 (2019) ]]>
Publisher : <![CDATA[Program Studi Pendidikan Fisika FKIP Universitas Riau ]]>
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DOI: 10.31258/jgs.7.2.111-118
<![CDATA[ Experimental activities are closely related to measurement activities that require measuring instruments. Skills using measuring instruments affect learning outcomes of the experimental activities carried out. The purpose of this research was to determine the effect of the implementation of the training on the use of electrical measuring instruments on the performance evaluation of physics education students in the basic physics experiments 2 course. This type of research is survey research. The research population was all students of the Physics Education Study Program Universiti of Riau semester 2, who took the Basic Physics Experiment 2 course in 2017, 2018 and 2019. The number of classes was 6 classes and each year a random sample class was taken, so the research sample amounted 3 classes. For 2017 students taking part in the Basic Physics Experiment 2 course, were only given instructions on the use of measuring instruments when conducting experiments, where as in 2018 and 2019, students taking basic physics experiments 2 were provided with special training before conducting experiments. The data collection instrument used was from the results of a three-year student performance assessment sheet on the topic of multiloop and alternating current experiments. The data analysis technique used is descriptive analysis. The results showed that students who were equipped with training in the use of electric measuring instrument before the lecture begins of Basic Physics Experiment 2, gave better performance assessment results compared to students who were not equipped with training in using electric measuring instrument. Therefore, training in the use of measuring instruments before conducting an experiment is very important given the basic physics experiment 2 on the topic of multiloops and alternating current.]]>
<![CDATA[Study of The Variation of Activating Agents on Specific Capacitance Values on The Synthesis of Supercapacitor Electrodes Based on Pepper Peel Waste ]]>
<![CDATA[Widodo Budi Kurniawan]]>;
<![CDATA[Anisa Indriawati]]>;
<![CDATA[Siska Oktaviani]]>
<![CDATA[ Jurnal Geliga Sains: Jurnal Pendidikan Fisika Vol 9, No 1 (2021) ]]>
Publisher : <![CDATA[Program Studi Pendidikan Fisika FKIP Universitas Riau ]]>
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DOI: 10.31258/jgs.9.1.19-25
<![CDATA[The by-product of pepper production in Bangka Belitung is the waste of pepper skin. This waste tends to be untapped and thrown away so that it can disrupt the environmental ecosystem. One of the efforts to utilize pepper skin waste is processing it into activated carbon as the base material for supercapacitor electrodes. The initial stage of the synthesis was carried out by a pre-carbonization process on a sample of dry and clean pepper peel waste. Furthermore, the sample is chemically activated using a chemical activator and also physical activation at a temperature of 700ºC in N2 gas flow conditions. The activated carbon resulting from the activation is then molded into electrode plates in the form of pellets with a diameter of 1 cm. The electrode plates were characterized using a scanning electron microscope-energy dispersive x-ray (SEM-EDX) to determine morphology and cyclic voltammetry (CV) to determine the specific capacitance value. SEM test results show that the electrode sample has porous morphology and CV results show that the sample activated using the KOH activator has a specific capacitance value of 15.20 F/g. These results indicate that the activated carbon synthesized from the waste of pepper peel can be used as a supercapacitor electrode material and also a solution for overcoming the negative effects of pepper skin waste.]]>
<![CDATA[SINTESIS PERANCAH HIDROKSIAPATIT BERPORI DARI LIMBAH CANGKANG KERANG MENGGUNAKAN METODE REPLIKASI SPONS POLYURETHANE ]]>
<![CDATA[Fitri Afriani]]>;
<![CDATA[Anisa Indriawati]]>;
<![CDATA[Widodo Budi Kurniawan]]>;
<![CDATA[Yekti Widyaningrum]]>;
<![CDATA[Rifqi Almusawi Rafsanjani]]>;
<![CDATA[Yuant Tiandho]]>
<![CDATA[ Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 6, No 1 (2020) ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
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DOI: 10.30870/gravity.v6i1.6741
<![CDATA[Researchers have synthesized hydroxyapatite-based porous scaffolds by the polyurethane sponge replication methods. Hydroxyapatite was derived from waste cockle shells through the co-precipitation method. The synthesis of porous scaffolds through the sponge replication methods is carried out by absorbing hydroxyapatite slurry through the addition of PVA and then followed by heating at 900oC to decompose the polyurethane and PVA. The best of slurry that can produce a porous scaffold in this study is the slurry that prepared through the ratio of hydroxyapatite:PVA = 80:20. The decomposition of the two polymers will leave macropores on the scaffold with an average size of 460 μm. Based on the thermogravimetric analysis, X-ray diffraction and FTIR spectrophotometer revealed that the PVA and polyurethane sponge were correctly decomposed, except for scaffolds with 40% PVA. Thus, the porous scaffolds synthesized in this study satisfies the requirements of porous scaffolds for the bone therapy process. ]]>
<![CDATA[PEMANFAATAN KARBON AKTIF DARI LIMBAH KULIT LADA SEBAGAI ADSORBEN LOGAM BERAT BESI PADA PENGOLAHAN TAMBANG TIMAH (KULONG) DI PROVINSI KEPULAUAN BANGKA BELITUNG ]]>
<![CDATA[Dewi Marina]]>;
<![CDATA[Widodo Budi Kurniawan]]>;
<![CDATA[Arya Bagaskara]]>;
<![CDATA[Jefri Akbar]]>
<![CDATA[ Jambura Physics Journal Vol 2, No 1 (2020): April 2020 ]]>
Publisher : <![CDATA[Universitas Negeri Gorontalo ]]>
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DOI: 10.34312/jpj.v2i1.5639
<![CDATA[Sintesis karbon aktif yang berasal dari limbah kulit lada sebagai material pengolahan air pasca tambang timah (kulong) di Propinsi Kepulauan Bangka Belitung telah dilakukan. Karbon aktif dipreparasi secara kimia menggunakan aktivator KOH 3M dengan nisbah 1:4 dan dikuti dengan aktivasi secara fisika dengan aliran gas N2 pada suhu 600 0C selama 3 jam. Sampel karbon aktif hasil preparasi dan telah mengalami pencucian hingga pH netral selanjutnya dikarakterisasi menggunakan SEM-EDX untuk mengetahui struktur morfologinya. Kemudian sampel karbon aktif dilakukan pengujian pada air kulong dengan parameter tingkat kekeruhan dan Atomic Absorbsion Spectrophotometry (AAS). Hasil SEM-EDX menunjukkan bahwa morfologi sampel berpori, selain itu hasil uji tingkat kekeruhan dengan perlakukan penambahan karbon aktif mengalami penurunan. Hasil serupa juga terjadi pada pengujian menggunakan uji AAS. Berdasarkan hasil pengujian dapat disimpulkan bahwa karbon aktif limbah kulit lada dapat dijadikan sebagai material penyerap pada proses pengolahan air pasca tambang timah (kulong).]]>
<![CDATA[Dye Sensitized Solar Cell (Dssc) With Areca Extract As A Natural Dye Sensitized ]]>
<![CDATA[Yuant Tiandho]]>;
<![CDATA[Purwati Purwati]]>;
<![CDATA[Marlina Marlina]]>;
<![CDATA[Mahjur Mahjur]]>;
<![CDATA[Widodo Budi Kurniawan]]>
<![CDATA[ KONSTAN - JURNAL FISIKA DAN PENDIDIKAN FISIKA Vol 7 No 1 (2022): KONSTAN (Jurnal Fisika dan Pendidikan Fisika) ]]>
Publisher : <![CDATA[Universitas Islam Negeri (UIN) Mataram ]]>
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DOI: 10.20414/konstan.v7i01.102
<![CDATA[Dye-sensitized Solar Cell (DSSC) is a solar cell that uses dye as one of its components. DSSC is interesting to develop because it can be fabricated simply with low production costs. This study aims to develop a DSSC that uses dye-sensitized from natural ingredients to be environmentally friendly. We chose betel nut (Areca catechu L.) as a natural dye source because betel nut has a reddish-brown color and is often used as a natural dye. The stages of this research consisted of betel nut extraction, TiO2 deposition, manufacture of a carbon layer on the counter electrode, and DSSC fabrication. Measurement of DSSC performance under solar irradiation with an intensity of 292 W/m2 shows that the fabricated DSSC can produce a voltage of up to 216 mV with a current of 0.03 mA. Variations in the concentration of TiO2 positioned on the ITO substrate indicate that higher concentrations of TiO2 can produce higher DSSC voltages]]>
