Priyono -
Jurusan Fisika, Fakultas Sains dan Matematika – Universitas Dipoengoro

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Rancang Bangun Alat Pengupas Kulit Lidah Buaya Untuk Perbaikan Sistem Kerja dan Meningkatkan Produktivitas Pengupasan Berdasarkan Aspek Ergonomi -, Priyono
Jurnal TIN Universitas Tanjungpura Vol 1, No 1 (2014): Jurnal S1 Teknik Industri UNTAN
Publisher : Jurnal TIN Universitas Tanjungpura

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Abstract

Home Industry "I Sun Vera" is an SME (Small and Medium Enterprises) that fostered by Telkom, which is located in the Budi Utomo Street 3rd Block No. A6 North Pontianak, West Borneo. It was founded in 2004 as one of the home industry in Indonesia that can make aloe vera plant into the best product , that in 2010 got the Siddhakarya Trophy as the appreciation of quality and productivity, The QCC (Quality Control Circle) 2011 National Level and 2011 in March got the award of Best TW (Quarterly) I Telkom Partners 2011 as the best SME fostered by Telkom. Everyday 300-500 kg aloe vera pared by to workers in “I Sun Vera” Home Industry. Equipment such as, kitchen knife, wooden cutting board, and small wooden chair. Workers often experience physical fatigue, neck pain, arms, waist, thighs, and legs cause low labor productivity, based on that problem this research aim to construct aloe vera peeler. The factors need to be considered in designing aloe vera peeler is the workers anthropometric data, make comparisons to determine the feasibility of the aloe vera peeler to identify of musculoskeletal disorder experienced by workers using a questionnaire method of nordic body map, heart rate data which measured to obtain the energy consumption calculations, determine the performance rating with westinghouse method, calculation of : allowance, time cycle average, standard time, and productivity. Based on the design and build of aloe vera peeler decreased the musculoskeletal disorders, generating measures anthropometric data tool through worker, and systems tools are designed according ENASE (effective, convenient, safe, healthy, efficient). Worker save energy by 0.07 kcal, increase of standard output by 1:12 kg/hour, and increased productivity output by 37.71%. Keywords- Musculoskeletal Disorder, Design of Aloe Vera Peeler, Ergonomics Intervention
Sintesis dan Karakterisasi Material Nanokomposit CNT/MnO2 Untuk Aplikasi Material Superkapasitor Subagio, A.; -, Priyono; -, Pardoyo; Yudianti, R.
Jurnal Pendidikan Fisika Indonesia Vol 10, No 1 (2014): January 2014
Publisher : Physics Department, Faculty of Mathematics and Natural Sciences, Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v10i1.3056

Abstract

Telah dilakukan fabrikasi material nanokomposit CNT/MnO2 sebagai material elektroda superkapasitor dengan reaksi redox antara CNT dan KMnO4. Variasi komposisi dari kedua bahan tersebut dilakukan untuk mengetahui sifat struktur, morfologi dan kelistrikannya dengan perbandingan massa CNT/MnO2 sebesar 0, 25, 50 dan 75%. Pola struktur kristal dan morfologi dari material serbuk nanokomposit CNT/MnO2 dikarakterisasi dengan X-ray diffraction (XRD), scanning electron microscope (SEM) dan transmission electron microscope (TEM), sedangkan pola ikatannya dikarakterisasi dengan FTIR. Serbuk nanokomposit CNT/MnO2 ini selanjutnya dibuat pellet berbentuk silinder berukuran diameter 1 cm dan ketebalan 2 mm dengan variasi penambahan pengikat polyvinylidene difluoride (PVDF) sebesar 10, 20 dan 30% dari campuran CNT/MnO2. Pellet dari material CNT/MnO2 ini selanjutnya dipanaskan pada temperatur 70 oC selama 1 jam. Hasil pengukuran resistansinya menunjukkan bahwa material CNT/MnO2 dengan perbandingan massa CNT/MnO2 sebesar 75% dan penambahan pengikat PVDF sebesar 20% menunjukkan nilai resistansi yang paling rendah. Selanjutnya prototip superkapasitor CNT/MnO2 dengan menggunakan PVDF sebesar 20% diukur dengan metode electrochemical impedance spectroscopy menghasilkan nilai kapasitansi spesifik sebesar 7,86 F/gr. Nanocomposite materials CNT/MnO2 have been fabricated as candidate of supercapacitor electrode material with a redox reaction between CNT and KMnO4. Variations in the composition of the two materials were carried out to determine the structure, morphology and electrical properties of CNT/MnO2 with mass ratio of 0, 25, 50 and 75 %. Pattern of the crystal structure and morphology of the CNT/MnO2 nanocomposite powder were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM), while the bond pattern was characterized by FTIR. CNT/MnO2 nanocomposite powder was managed to make cylindrical pellets with diameter of 1 cm and thickness of 2 mm with variations addition of binder polyvinylidene difluoride (PVDF) of 10, 20 and 30%. Pellets of the material were then heated at a temperature of 70 oC for 1 hour. Resistance measurement results showed that the ratio of the mass of material CNT/MnO2 by 75% and additions by 20% PVDF binder showed the lowest resistance value. Furthermore, CNT/MnO2 supercapacitor prototype using PVDF of 20% measured with electrochemical impedance spectroscopy method showed specific capacitance of 7.86 F/gr.
Variation of Potential Yield of Hybrid Population of Robusta coffee (Coffea canepor Erdiansyah, Novie Pranata; Sumirat, Ucu; -, Priyono
Pelita Perkebunan (Coffee and Cocoa Research Journal) Vol 30, No 2 (2014)
Publisher : Indonesian Coffee and Cocoa Research Institute

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Abstract

The low yield of Robusta coffee in Indonesia may be due to the use of planting materials derived from seeds. The research objective was to determine the variation of Robusta coffee yield wich local propagated by using seeds. The study was conducted in Kaliwining experimental Station of ICCRI (Indonesian Coffee andCocoa Research Institute). There were two populations observed. Number of progeny used in this study were 186 genotypes consisting of two groups from crossesBP 409 x Q 121 with 89 progenies and BP 961 x BP 409 with 81 progenies. The results showed that planting materials from seeds exhibit properties mixed results.Progeny that have the best results (yield more than 2 ton/ha) not more than 5% of the total population. In both populations there is a big difference between the progenythat has high and low yield. Highest yield B population could reach 2,500 kg/ha and the C population reached 2,200 kg/ha. The lowest yield can only produce coffee270 kg/ha in populations B and 120 kg/ha in population C.Key words: Coffea canephora, hybrid, variation, yield
PEMBUATAN JALUR EVAKUASI ALTERNATIF BERDASARKAN MODEL SIMULASI BANJIR LUAPAN SUNGAI BENGAWAN SOLO DI KOTA SURAKARTA MENGGUNAKAN SISTEM INFORMASI GEOGRAFIS (SIG) Priyana, Yuli; -, Priyono; Anna, Alif Noor; Sigit, Agus Anggoro; -, Rudiyanto
PROSIDING SEMINAR NASIONAL 2015: Prosiding Bidang MIPA dan Kesehatan The 2nd University Research Colloquium
Publisher : Universitas Muhammadiyah Semarang

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Abstract

The aim of this research is to create a disaster evacuation paths based on the results of flood modeling. The method used in this research is least cost path. The results obtained from this study were (a) the impact of a simulation model to land use is the buildings area 885,36 m2, water area 10.621,97 m2, vacant land with rare vegetation area 68.916,64 m2, vacant land with vegetation area 78.925,16 m2, and settlement area 137.251,78 m2, and (b) evacuation paths produced by the method of least cost path is two lanes in Kampung Sewu and 2 lanes in the village of Jebres. The least cost path choose lane from the first starting point in intersection of three road of Beton and go accros Gotong Royong road to evacuation point in Jami’Mosque. Both of the starting point in the Bengawan Solo river embankment can to the evacuation point Sawunggaling Mosque. Jebres evacuation route in the village there are two lines of evacuation. The first lane evacuation from the starting point in intersection three road of Kentingan to the front Psychiatric Hospital Surakarta, and then to the front office Psychotherapy Center Surakarta North toward straight up in Al-Fath Mosque. Both are alternative evacuation route from the starting point in a four-way intersection in the middle of densely populated settlements can pass the road to the west to get stuck, then straight over the bridge, past the front of the Student Dormitory UNS, then to the evacuation site Al-Fath Mosque.Keywords: simulation model, evacuation route, GIS
Penilaian tingkat kkesuburan tanah kritis di desa kaling, Kabupaten Karanganyar melalui analisis tanah, pertumbuhan dan hasil tanaman -, Priyono
Eksplorasi Vol 20, No 1 (2008): Ekplorasi
Publisher : Eksplorasi

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Abstract

The environment damages in In donesia had been known enough including in Central Java that we can recognized and marked by the land-used which is not suits with its ability (without notice the everlasting of environment which supposed to he inherited into the next generation), One of the example of serious land-damage is critical land in Kaling Vulage, Tasikmadu Karanganyar, as the which become location of the research, The purpose of the needs to be held to reach goals such as :1)Evaluate land’s ability and used-dig land fertility level of roof-tile craftsman in Kaling Village; 2) Give the knowledge information to the society of Kaling Village about fertility level decreasing because of carcless land digging. The method of this research is field survey trough experiment of soybean planting (Wilis variety) in the used-dig land of roof-tile craftsman. This research used the design of experiment factorial trough basic program complete random with one treatment factor, that is organic fertilizer’s dose (Blotong), which is consist of 6 degree: 0 ton/ha; 15 ton/ha; 22,5 ton/ha; 37,5 ton/ha, each of the degree repeated 4 time, so we can get the combination behavior of the 24 treatment combinations. Analysis which are done : Land analysis in laboratory especially chemistry such as N total subtance (Kjeldahl); P-vailable (Bray 1 and Bray 2), lans reaction with pH meter, C-organic (burning method); KTK (KTKE method); substance of K, Ca, and Mg (Photometer method). Besides, it is also use analysis of economic suitability (BC ratio), this research was being held since May 1 st 2007 until October 31 st 2007. The result of analysis are: 1) the treatment of organic fertilizer’s dose (blotong) is not give real effect to all of the measured parameter (plant’s high, wet-weight of all plants, the number of empty legumes, dry-weight of seed, the weight of 100 dry-seed, and dry-weight plant); 2) even so, from all of the data we can see that there is tendency increasing of result (plant high, wet-weight of all plants, dry-weight plant, dry-weight of seed, the weight of 100 dry-seed), expect in the number of empty legumes which is decreasing, it means there is increasing og legume’s weight content. With this research result agronomically, we can develop; 3) Land’s research condition before being  planted (without planted) has low nutrtion element, after being planted and being fertilized with blotong and rhizoplus, it increase the nutrition element even still categorized very low (poor/ctitic) of fertility so the maintain for the production plan needs artificial fertilizer, such as TSP, NPK, KCL, ZK, PHONSKA, SP36 and leaf-flower-fruit fertilizer; 4) the highest result of dra seed in Ki teratment (15 ton/ha), that it 6,085 ton/ha and lowest result is Ko () ton/ha), that is 3,743 ton/ha); 5) the organic fertilizer used (one of them is blotong) and soybean plant (nuts which has economic value) and used in plants alternate, strip plant or in critical land such as Kaling Village Tasikmadu Subdistrict, Karanganyar Regency. Keywords : Land damage, critical land, evaluation, land analysis, growth and plant’s
UJI TANAH DAN PENANAMAN UNTUK MENILAI TINGKAT KESUBURAN TANAH -, Priyono
Eksplorasi Vol 16, No 1 (2004): Eksplorasi
Publisher : Eksplorasi

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Abstract

Field experiment was conducted during 3,5 months (April-August 2002) to determine soil and plant testing evaluateed degree of soil fertility at Kaling village, Tasilmadu Sub district, Karanganyar district. The experiment used Randomized Completely Block Design with 4 replications The treatmenths used on factor was organic fertilizer (solid waste of sugar factory); pH, N-total, P-Bray, K, Ca, Mg, H, Al, CEC, Base saturation, and economic analysis (BC ratio, income statement). Result showed that the effect of organic fertilizer nonsignificant was whole parameters: the height of plant, the weight of 100 dry seeds, the weight of dry seeds, the fresh weight of biomass, the fresh weight body plant, the number of empty pod, except the dry weight of biomass. Nevertheless to whole data was received to trend increasing of the whole parameters, except the numbers of empty pod. Soil condition before was planted (was not planted) very poor, and then after was planted the soil condition is very fertility. After account economic was received BC ratio ± 1.55 and income statement Rp 647.500,00/3 months. Conclusion this experiment is follow up to coming. Keywords : Testing of soil and planting, soil analysis, economic analysis, planting, soil fertility.
Sintesis dan Karakterisasi Material Nanokomposit CNT/MnO2 Untuk Aplikasi Material Superkapasitor Subagio, A.; -, Priyono; -, Pardoyo; Yudianti, R.
Jurnal Pendidikan Fisika Indonesia Vol 10, No 1 (2014): January 2014
Publisher : Department of Physics, Faculty of Mathematics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpfi.v10i1.3056

Abstract

Telah dilakukan fabrikasi material nanokomposit CNT/MnO2 sebagai material elektroda superkapasitor dengan reaksi redox antara CNT dan KMnO4. Variasi komposisi dari kedua bahan tersebut dilakukan untuk mengetahui sifat struktur, morfologi dan kelistrikannya dengan perbandingan massa CNT/MnO2 sebesar 0, 25, 50 dan 75%. Pola struktur kristal dan morfologi dari material serbuk nanokomposit CNT/MnO2 dikarakterisasi dengan X-ray diffraction (XRD), scanning electron microscope (SEM) dan transmission electron microscope (TEM), sedangkan pola ikatannya dikarakterisasi dengan FTIR. Serbuk nanokomposit CNT/MnO2 ini selanjutnya dibuat pellet berbentuk silinder berukuran diameter 1 cm dan ketebalan 2 mm dengan variasi penambahan pengikat polyvinylidene difluoride (PVDF) sebesar 10, 20 dan 30% dari campuran CNT/MnO2. Pellet dari material CNT/MnO2 ini selanjutnya dipanaskan pada temperatur 70 oC selama 1 jam. Hasil pengukuran resistansinya menunjukkan bahwa material CNT/MnO2 dengan perbandingan massa CNT/MnO2 sebesar 75% dan penambahan pengikat PVDF sebesar 20% menunjukkan nilai resistansi yang paling rendah. Selanjutnya prototip superkapasitor CNT/MnO2 dengan menggunakan PVDF sebesar 20% diukur dengan metode electrochemical impedance spectroscopy menghasilkan nilai kapasitansi spesifik sebesar 7,86 F/gr.Nanocomposite materials CNT/MnO2 have been fabricated as candidate of supercapacitor electrode material with a redox reaction between CNT and KMnO4. Variations in the composition of the two materials were carried out to determine the structure, morphology and electrical properties of CNT/MnO2 with mass ratio of 0, 25, 50 and 75 %. Pattern of the crystal structure and morphology of the CNT/MnO2 nanocomposite powder were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM), while the bond pattern was characterized by FTIR. CNT/MnO2 nanocomposite powder was managed to make cylindrical pellets with diameter of 1 cm and thickness of 2 mm with variations addition of binder polyvinylidene difluoride (PVDF) of 10, 20 and 30%. Pellets of the material were then heated at a temperature of 70 oC for 1 hour. Resistance measurement results showed that the ratio of the mass of material CNT/MnO2 by 75% and additions by 20% PVDF binder showed the lowest resistance value. Furthermore, CNT/MnO2 supercapacitor prototype using PVDF of 20% measured with electrochemical impedance spectroscopy method showed specific capacitance of 7.86 F/gr.
Causal Correlation Between Technology Level, Institutional Support, and Agricultural Extension Role Againts for the Adoption Level of Livestock-Crop Integration -, Priyono
Informatika Pertanian Vol 24, No 2 (2015): Desember 2015
Publisher : Sekretariat Badan Penelitian dan Pengembangan Pertanian

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (518.055 KB) | DOI: 10.21082/ip.v24n2.2015.p141-148

Abstract

Efforts to increase the amount of livestock-crop integration adopter needs agricultural extension support and powerful institutional support through technology transfer to farmers. This research was aimed to determine causal correlation between technology level, institutional support and agricultural extension’s role against the adoption level of livestock-crop integration. This research was conducted from 15th February - 31th March 2013 in Sadangkulon, Kebumen Regency. The used method in this study was structured survey method. Respondents were taken as much as 31 people using sample random sampling, as much as 50% from each farmer group. Variables which measured in this study were integration technology level, agricultural extension role, and adoption level of livestock-crop integration. Data were analyzed using path analysis to estimate the coefficient of linear structural equation which has a causal correlation by SPSS tools. The research result showed that the contribution of exogenous variables (technology level, institutional support, and agricultural extension role) simultaneously affecting the adoption level of livestock-crop integration of 72,5% (P < 0,05). Partially, the adoption level of livestock-crop integration was directly affected by the mastery level of technology (16,4%), institutional support (4,7%), and agricultural extension role (13,4%). Based correlation analysis showed that the correlation between exogenous variable have a positive and significant correlation (r12 = 0,580; r13 = 0,703; and r23 = 0,427). Based on the research result, that mastery level of technology, institutional support, and agricultural extension role had a causal correlation against the adoption level of livestock-crop integration.
PENINGKATAN PEMAHAMAN DONGENG ANAK TUNARUNGU MELALUI SIMULATION BASED LEARNING Handayani, Endang Sri; -, Priyono; Anwar, Mohammad
PEDAGOGIA Vol 15, No 2 (2017)
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (633.738 KB) | DOI: 10.17509/pedagogia.v15i2.8093

Abstract

The research aims to determine the influence of application simulation based learning toward understanding of fairy tale for children with hearing impairment in third grade at SLB-B YRTRW Surakarta 2016/2017 academic year. This research uses a quantitative approach to research methods of experimental type of pre-experimental form one group pretest-posttest design. Subjek in this research were students in third grade at SLB-B YRTRW Surakarta 2016/2017 academic year as many as four students. Data collection techniques in this research is an objective test in multiple choice. Data analysis techniques in this research is the analysis of non-parametric Wilcoxon Signed Rank test (Wilcoxon Signed Rank Test) using SPSS versi 22. From the result of calculations using SPSS versi 22, the known value of the average posttest research sample increased. Descriptive analysis result obtained by the average value of 77,5 posttest greater than the value pretest 57,5. Non-parametric analysis result obtained count value Z= -2,000 with Asymp. Sig. (2-tailed) = 0,046 at significance level (α) of 5%. Based on the results of data analysis can be concluded that effect of application simulation based learning is positive toward understanding of fairy tale for children with hearing impairment in third grade at SLB-B YRTRW Surakarta 2016/2017 academic year.
Pengembangan Modul Cetak Pembelajaran Remedial Untuk Peningkatan Ketuntasan Belajar Mata Pelajaran Bahasa Indonesia SMP Kelas VIII -, Supkarwati; Ibrahim, Nurdin; -, Priyono
JTP - Jurnal Teknologi Pendidikan Vol 21 No 1 (2019): JURNAL TEKNOLOGI PENDIDIKAN
Publisher : PROGRAM STUDI TEKNOLOGI PENDIDIKAN PASCASARJANA UNIVERSITAS NEGERI JAKARTA

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Abstract

Penelitian ini bertujuan untuk menghasilkan modul pembelajaran remedial mata pelajaran Bahasa Indonesia kelas III SMP. Metodologi yang digunakan adalah metologi penelitian pengembangan. Model yang digunakan adalah model Derek Rowntree dengan 3 tahapan, yaitu tahap perencanaan, tahap persiapan penulisan, serta tahap penulisan dan penyuntingan.  Hasil penelitian menunjukkan nilai rata-rata dari ahli materi dan bahasa sebesar 3,8. Hal itu menunjukkan bahwa produk yang dihasilkan sangat bagus. Hasil penelitian oleh ahli desain menunjukkan rata-rata 3,7. Artinya, produk ini sangat bagus. Berdasarkan uji satu-satu, hasil rata-rata sebesar 3,7. Artinya, modul ini hasilnya sangat bagus. Dari uji kelompok kecil, nilai rata-rata post test sebesar 82. Ini berarti modul mampu meningkatkan prestasi hasil belajar remedial dengan. Dari ujicoba lapangan, nilai rata-rata post test sebesar 81. Ini berarti, modul mampu meningkatkan prestasi hasil belajar remedial. Dapat disimpulan bahwa modul cetak pembelajaran remedial bahasa Indonesia untuk siswa kelas VIII SMP dapat dikatakan bagus untuk pembelajaran remedial.