Efficient light to energy conversion was demonstrated in solid-state, lateral photodiodes device containing photosynthetic light-harvesting chlorophyll protein complexes as active materials. The device exhibits the highest reported photocurrent density response of 365 µA/cm 2 when illuminated at 320 mW/cm 2 radiation source power. The photocurrent response wa s stabled over 10 4 s of continuous cycles of dark and illumination states. The short rise and decay time of the photocurrent waveform within sub-second range indicates an effective photogeneration and charge extraction within the device. Optical bandgap extraction using absorption coefficient method reveals that the energy gap of the active materials ranges from 2.8 to 3.8 eV, correspond to the Photosystem I and Photosystem II of the photosynthetic pigment-protein complexes.
{"title":"BIOMIMETIC PHOTODIODE DEVICE WITH LARGE PHOTOCURRENT RESPONSE USING PHOTOSYNTHETIC PIGMENT-PROTEIN COMPLEXES","authors":"D. Y. Kusuma, H. Soetedjo","doi":"10.18860/neu.v9i2.4042","DOIUrl":"https://doi.org/10.18860/neu.v9i2.4042","url":null,"abstract":"Efficient light to energy conversion was demonstrated in solid-state, lateral photodiodes device containing photosynthetic light-harvesting chlorophyll protein complexes as active materials. The device exhibits the highest reported photocurrent density response of 365 µA/cm 2 when illuminated at 320 mW/cm 2 radiation source power. The photocurrent response wa s stabled over 10 4 s of continuous cycles of dark and illumination states. The short rise and decay time of the photocurrent waveform within sub-second range indicates an effective photogeneration and charge extraction within the device. Optical bandgap extraction using absorption coefficient method reveals that the energy gap of the active materials ranges from 2.8 to 3.8 eV, correspond to the Photosystem I and Photosystem II of the photosynthetic pigment-protein complexes.","PeriodicalId":17685,"journal":{"name":"Jurnal Neutrino","volume":"2 1","pages":"26-31"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87271657","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}
The thermoacoustic refrigerator is an innovative alternative and did not use substances that had a negative impact on the environment such as freon, but using air as the working substance. The materials used the refrigerator were easily obtained and the construction components were simple so that made this refrigerator was cheap, easy to make and easy to maintain. Stack was used in the thermoacoustic refrigerator system used PVC (Polyvinyl chloride) which is parallel cylindrical shape and diameter (1.50 ± 0.05) mm and length of 8 cm. Variations of loudspeaker input power that used were 20 watt, 30 watt, 40 watt, 50 watt and 60 watt. Variations of the input power that used to determine the effect of loudspeaker input power to decreasing temperature in the operating of the thermoacoustic refrigerator system using PVC stack. From the result, loudspeaker input power influenced on the decreasing temperature that was 6.0 °C for 20 watts, 6.7 °C for 30 watts, 7.2 °C for 40 watts, 8.0 °C for 50 watts and 9.0 °C for 60 watts. From these results indicated optimum decreasing temperature depended on the amount of loudspeaker power that was directly proportional to the decreasing temperature obtained.
{"title":"THERMOACOUSTIC REFRIGERATOR SYSTEM PERFORMANCE USING THE PVC (POLYVINYL CHLORIDE) STACK BY POWER INPUT VARIATION","authors":"Indah Kharismawati","doi":"10.18860/neu.v9i2.4073","DOIUrl":"https://doi.org/10.18860/neu.v9i2.4073","url":null,"abstract":"The thermoacoustic refrigerator is an innovative alternative and did not use substances that had a negative impact on the environment such as freon, but using air as the working substance. The materials used the refrigerator were easily obtained and the construction components were simple so that made this refrigerator was cheap, easy to make and easy to maintain. Stack was used in the thermoacoustic refrigerator system used PVC (Polyvinyl chloride) which is parallel cylindrical shape and diameter (1.50 ± 0.05) mm and length of 8 cm. Variations of loudspeaker input power that used were 20 watt, 30 watt, 40 watt, 50 watt and 60 watt. Variations of the input power that used to determine the effect of loudspeaker input power to decreasing temperature in the operating of the thermoacoustic refrigerator system using PVC stack. From the result, loudspeaker input power influenced on the decreasing temperature that was 6.0 °C for 20 watts, 6.7 °C for 30 watts, 7.2 °C for 40 watts, 8.0 °C for 50 watts and 9.0 °C for 60 watts. From these results indicated optimum decreasing temperature depended on the amount of loudspeaker power that was directly proportional to the decreasing temperature obtained.","PeriodicalId":17685,"journal":{"name":"Jurnal Neutrino","volume":"199 1","pages":"32-38"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77262079","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}
Gede volcano is an active volcano in West Java, Indonesia. Research about determination the volcano-tectonic earthquake source positions has given results using volcano-tectonic earthquakes data from January until November 2015. Volcano-tectonic earthquakes contained deep (VT-A) have frequency (maximum amplitude) range 5 – 15 Hz. Furthermore, they contain shallow earthquake, VT-B have range 3-5 Hz and LF have range 1-3 Hz. Geiger’s Adaptive Damping (GAD) methods used for determining the hypocenter of these volcano-tectonic (VT) events. Hypocenter distribution divided into 4 clusters. Cluster I located in the crater of Gede volcano dominated by VT-B earthquakes their depth range 2 km below MSL to 2 km above MSL including the VT-B swarm. The seismic sources in cluster I indicated dominant due to the volcanic fluid or gas filled in conduit pipes. Cluster II located at the west of Gede volcano caused by Gede-Pangrango fault-line dominated by VT-A earthquakes with depths range 1.5 km below MSL to 700 m above MSL. Cluster III located in the North of Gede volcano dominated by VT-A events there caused by graben fault area with those depths range 7.5 – 1.65 km below MSL. Cluster IV located in South West of Gede volcano contained VT-A earthquakes with depth range at 10 km below MSL and VT-B earthquakes this depth 2 km below MSL. Due to magma intrusion filled into fractures of the fault in the West of Gede volcano this shallow magma filling-fractures and degassing in subsurface assumed dominates the volcano-tectonic events from January to November 2015 due to faults extends from North to South occured in the West of Gede volcano.
{"title":"Hypocenter Determination and Clustering of Volcano-tectonic Earthquakes in Gede Volcano 2015","authors":"A. K. Nugraha, S. Maryanto, H. Triastuty","doi":"10.18860/neu.v9i2.4103","DOIUrl":"https://doi.org/10.18860/neu.v9i2.4103","url":null,"abstract":"Gede volcano is an active volcano in West Java, Indonesia. Research about determination the volcano-tectonic earthquake source positions has given results using volcano-tectonic earthquakes data from January until November 2015. Volcano-tectonic earthquakes contained deep (VT-A) have frequency (maximum amplitude) range 5 – 15 Hz. Furthermore, they contain shallow earthquake, VT-B have range 3-5 Hz and LF have range 1-3 Hz. Geiger’s Adaptive Damping (GAD) methods used for determining the hypocenter of these volcano-tectonic (VT) events. Hypocenter distribution divided into 4 clusters. Cluster I located in the crater of Gede volcano dominated by VT-B earthquakes their depth range 2 km below MSL to 2 km above MSL including the VT-B swarm. The seismic sources in cluster I indicated dominant due to the volcanic fluid or gas filled in conduit pipes. Cluster II located at the west of Gede volcano caused by Gede-Pangrango fault-line dominated by VT-A earthquakes with depths range 1.5 km below MSL to 700 m above MSL. Cluster III located in the North of Gede volcano dominated by VT-A events there caused by graben fault area with those depths range 7.5 – 1.65 km below MSL. Cluster IV located in South West of Gede volcano contained VT-A earthquakes with depth range at 10 km below MSL and VT-B earthquakes this depth 2 km below MSL. Due to magma intrusion filled into fractures of the fault in the West of Gede volcano this shallow magma filling-fractures and degassing in subsurface assumed dominates the volcano-tectonic events from January to November 2015 due to faults extends from North to South occured in the West of Gede volcano.","PeriodicalId":17685,"journal":{"name":"Jurnal Neutrino","volume":"36 1","pages":"44-51"},"PeriodicalIF":0.0,"publicationDate":"2017-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86671484","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}
T. Wiguna, O. Moefti, Rahadian Rahadian, Muhamad Irfan
Gas charged sediment as a one of parameter for geohazard study in infrastructure especially in swamp area. Instability of sediment layer for exampel subsidence and landslide result in geohazard potention that caused by gas charged sediment. Seismic single channel can be used to identufy gas charged sediment location. Seabed morphology is collected from bathymetry and tidal survey. From seismic profile interpretation shows gas charged sediment indication in Line A and Line B. That indication emerged by presence of acoustic turbid zone and acoustic blanking. Line A and Line B location will be spotlight in next geotechnic port construction study.
{"title":"SINGLE CHANNEL SEISMIC APPLICATION FOR GAS CHARGED SEDIMENT RECONNAISSANCE IN GEOHAZARD STUDY OF PORT CONSTRUCTION AT WETLAND AREA","authors":"T. Wiguna, O. Moefti, Rahadian Rahadian, Muhamad Irfan","doi":"10.18860/neu.v9i1.3666","DOIUrl":"https://doi.org/10.18860/neu.v9i1.3666","url":null,"abstract":"Gas charged sediment as a one of parameter for geohazard study in infrastructure especially in swamp area. Instability of sediment layer for exampel subsidence and landslide result in geohazard potention that caused by gas charged sediment. Seismic single channel can be used to identufy gas charged sediment location. Seabed morphology is collected from bathymetry and tidal survey. From seismic profile interpretation shows gas charged sediment indication in Line A and Line B. That indication emerged by presence of acoustic turbid zone and acoustic blanking. Line A and Line B location will be spotlight in next geotechnic port construction study.","PeriodicalId":17685,"journal":{"name":"Jurnal Neutrino","volume":"23 1","pages":"20-25"},"PeriodicalIF":0.0,"publicationDate":"2016-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89559779","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}
Muhammad Mifta Hasan, H. Triastuty, B. J. Santosa, A. Widodo
Papandayan volcano is a stratovolcano with irregular cone-shaped has eight craters around the peak. The most active crater in Papandayan is a Mas crater. Distribution of relocated event calculated using Geiger Adaptive Damping Algorithm (GAD) shows that the epicenter of the event centered below Mas crater with maximum rms 0.114. While depth of the hypocenter range between 0-2 km and 5-6 km due to activity of steam and gas.
帕潘达延火山是一座不规则锥形的层状火山，火山周围有8个火山口。帕潘达延最活跃的陨石坑是马斯陨石坑。利用Geiger自适应阻尼算法(GAD)计算的重新定位事件分布表明，该事件的震中位于Mas火山口下方，最大rms为0.114。由于蒸汽和天然气的活动，震源深度在0 ~ 2 km ~ 5 ~ 6 km之间。
{"title":"Hypocenter Distribution of Low Frequency Event at Papandayan Volcano","authors":"Muhammad Mifta Hasan, H. Triastuty, B. J. Santosa, A. Widodo","doi":"10.18860/neu.v9i1.3655","DOIUrl":"https://doi.org/10.18860/neu.v9i1.3655","url":null,"abstract":"Papandayan volcano is a stratovolcano with irregular cone-shaped has eight craters around the peak. The most active crater in Papandayan is a Mas crater. Distribution of relocated event calculated using Geiger Adaptive Damping Algorithm (GAD) shows that the epicenter of the event centered below Mas crater with maximum rms 0.114. While depth of the hypocenter range between 0-2 km and 5-6 km due to activity of steam and gas.","PeriodicalId":17685,"journal":{"name":"Jurnal Neutrino","volume":"1854 1","pages":"10-14"},"PeriodicalIF":0.0,"publicationDate":"2016-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86528832","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}
Anjar Pranggawan Azhari, S. Maryanto, A. Rachmansyah
Gravity survey has been acquired by Gravimeter Lacoste & Romberg G-1035 at Blawan-Ijen geothermal area. It was a focusing study from previous research. The residual Bouguer anomaly data was obtain after applying gravity data reduction, reduction to horizontal plane, and upward continuation. Result of Bouguer anomaly interpretation shows occurrence of new faults and their relative movement. Blawan fault (F1), F2, F3, and F6 are normal fault. Blawan fault is main fault controlling hot springs at Blawan-Ijen geothermal area. F4 and F5 are oblique fault and forming a graben at Banyupahit River. F7 is reverse fault. Subsurface model shows that Blawan-Ijen geothermal area was dominated by the Ijen caldera forming ignimbrite (ρ1=2.670 g/cm3), embedded shale and sand (ρ2=2.644 g/cm3) as Blawan lake sediments, magma intrusion (ρ3=2.814 g/cm3 & ρ7=2.821 g/cm3), andesite rock (ρ4=2.448 g/cm3) as geothermal reservoir, pyroclastic air fall deposits (ρ5=2.613 g/cm3) from Mt. Blau, and lava flow (ρ6=2.890 g/cm3).
{"title":"INTERPRETATION OF BOUGUER ANOMALY TO DETERMINE FAULT AND SUBSURFACE STRUCTURE AT BLAWAN-IJEN GEOTHERMAL AREA","authors":"Anjar Pranggawan Azhari, S. Maryanto, A. Rachmansyah","doi":"10.18860/neu.v9i1.3664","DOIUrl":"https://doi.org/10.18860/neu.v9i1.3664","url":null,"abstract":"Gravity survey has been acquired by Gravimeter Lacoste & Romberg G-1035 at Blawan-Ijen geothermal area. It was a focusing study from previous research. The residual Bouguer anomaly data was obtain after applying gravity data reduction, reduction to horizontal plane, and upward continuation. Result of Bouguer anomaly interpretation shows occurrence of new faults and their relative movement. Blawan fault (F1), F2, F3, and F6 are normal fault. Blawan fault is main fault controlling hot springs at Blawan-Ijen geothermal area. F4 and F5 are oblique fault and forming a graben at Banyupahit River. F7 is reverse fault. Subsurface model shows that Blawan-Ijen geothermal area was dominated by the Ijen caldera forming ignimbrite (ρ1=2.670 g/cm3), embedded shale and sand (ρ2=2.644 g/cm3) as Blawan lake sediments, magma intrusion (ρ3=2.814 g/cm3 & ρ7=2.821 g/cm3), andesite rock (ρ4=2.448 g/cm3) as geothermal reservoir, pyroclastic air fall deposits (ρ5=2.613 g/cm3) from Mt. Blau, and lava flow (ρ6=2.890 g/cm3).","PeriodicalId":17685,"journal":{"name":"Jurnal Neutrino","volume":"26 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2016-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78257882","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}
T. Wiguna, Rahadian Rahadian, S. Ardhyastuti, S. Rahmah, T. Zera
Two dimension (2D) seismic profile of Baruna and Jaya lines at North-East Java Basin show seismic reflector characteristics that can be used to interpret sediment thickness and continuity. Those reflector characteristics that can be applied for seismic facies analysis that represent depositional environment. This study starts from seismic data processing that using Kirchhoff Post Stack Time Migration method which is 2D seismic profile as result. Seismic reflector characterization has been done to both 2D profiles. Seismic reflector characterization was grouped as (i) individual reflection, (ii) reflection configuration, (iii) reflection termination, (iv) external form. Individual reflection characteristics show high and medium amplitude, medium and low frequency, and continuous. Configuration reflection is continuous with parallel and subparallel type. Reflection termination shows onlap, and external form shows sheet drape. Local mound appearance can be interpreted as paleo-reef. Facies seismic anlysis result for this study area is shelf.
{"title":"SEISMIC FACIES ANALYSIS ON 2D SEISMIC REFLECTION PROFILE IN BARUNA AND JAYA LINE AT NORTH EAST JAVA BASIN","authors":"T. Wiguna, Rahadian Rahadian, S. Ardhyastuti, S. Rahmah, T. Zera","doi":"10.18860/neu.v9i1.3665","DOIUrl":"https://doi.org/10.18860/neu.v9i1.3665","url":null,"abstract":"Two dimension (2D) seismic profile of Baruna and Jaya lines at North-East Java Basin show seismic reflector characteristics that can be used to interpret sediment thickness and continuity. Those reflector characteristics that can be applied for seismic facies analysis that represent depositional environment. This study starts from seismic data processing that using Kirchhoff Post Stack Time Migration method which is 2D seismic profile as result. Seismic reflector characterization has been done to both 2D profiles. Seismic reflector characterization was grouped as (i) individual reflection, (ii) reflection configuration, (iii) reflection termination, (iv) external form. Individual reflection characteristics show high and medium amplitude, medium and low frequency, and continuous. Configuration reflection is continuous with parallel and subparallel type. Reflection termination shows onlap, and external form shows sheet drape. Local mound appearance can be interpreted as paleo-reef. Facies seismic anlysis result for this study area is shelf.","PeriodicalId":17685,"journal":{"name":"Jurnal Neutrino","volume":"23 1","pages":"15-19"},"PeriodicalIF":0.0,"publicationDate":"2016-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76269529","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}
Research design detection instrument quality dry rubber by capacitance principle use microcontroler ATMega8 has purpose for knowing characteristic capacitance censor, making detection instrument and testing detection instrument in latex. This research has done by steps making capacitance censor, making acuisition data system, preparing train sample, taking data from train sample, processing and analysis data train sample, preparing test sample and implementation detection instrument in test sample. Result of characterization censor that is transfer function f = 120135e -0.312C Hz, has relation input and output really strong by correlation coefficient r = -0,99, has sensitivity 240.27 Hz/F and repeatability 98,95%. Result of testing show success instrument percentage for detection quality dry rubber in latex quality 1 is 100%, lateks quality 2 is 70%, and latex quality low is 90%.
{"title":"DESIGN DETECTION INSTRUMENT QUALITY DRY RUBBER In LATEX By CAPACITANCE PRINCIPLE USE MICROCONTROLER ATMega8","authors":"Nana Verawati, Frida A. Rakhmadi, A. Asmara","doi":"10.18860/NEU.V9I1.3419","DOIUrl":"https://doi.org/10.18860/NEU.V9I1.3419","url":null,"abstract":"Research design detection instrument quality dry rubber by capacitance principle use microcontroler ATMega8 has purpose for knowing characteristic capacitance censor, making detection instrument and testing detection instrument in latex. This research has done by steps making capacitance censor, making acuisition data system, preparing train sample, taking data from train sample, processing and analysis data train sample, preparing test sample and implementation detection instrument in test sample. Result of characterization censor that is transfer function f = 120135e -0.312C Hz, has relation input and output really strong by correlation coefficient r = -0,99, has sensitivity 240.27 Hz/F and repeatability 98,95%. Result of testing show success instrument percentage for detection quality dry rubber in latex quality 1 is 100%, lateks quality 2 is 70%, and latex quality low is 90%.","PeriodicalId":17685,"journal":{"name":"Jurnal Neutrino","volume":"54 1","pages":"10-18"},"PeriodicalIF":0.0,"publicationDate":"2016-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90554695","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}
Penelitian ini bertujuan untuk mengetahui distribusi tahanan jenis dan bidang gelincir pada pada Daerah Aliran Sungai (DAS) Brantas Kecamatan Sukun Kota Malang. Lokasi penelitian merupakan daerah dengan tebing yang curam berkisar 70 o hingga 90 o . Penelitian dilakukan dengan menggunakan metode geolistrik resistivitas dengan konfigurasi Wenner . Hasil pengolahan data geolistrik resistivitas menunjukkan bahwa material lempung pasiran dengan tahanan jenis 23,4 Ohm-meter, material lempung kedap air dengan tahanan jenis 30,9–57,3 Ohm-meter diduga sebagai bidang gelincir ( slip-surface ). Hal tersebut disebabkan resapan air hujan yang mencapai lapisan lempung kedap air akan mengalami kontak dengan lapisan lempung, air mengalir diatas lapisan lempung dan menyebabkan hancurnya lapisan lempung sehingga menjadi licin yang kemudian menjadi bidang gelincir. Berdasarkan interpretasi hasil pengolahan data dapat disimpulkan bahwa daerah penelitian memiliki potensi yang tinggi untuk terjadi longsor
{"title":"Penerapan Metode Geofisika Untuk Pemetaan Daerah Rawan Longsor DAS Brantas Kecamatan Sukun Kota Malang","authors":"Kurriawan Budi Pranata, Akhmad Jufriadi, Hena Dian Ayu, Dwi Wahyuningsih","doi":"10.18860/NEU.V8I2.3311","DOIUrl":"https://doi.org/10.18860/NEU.V8I2.3311","url":null,"abstract":"Penelitian ini bertujuan untuk mengetahui distribusi tahanan jenis dan bidang gelincir pada pada Daerah Aliran Sungai (DAS) Brantas Kecamatan Sukun Kota Malang. Lokasi penelitian merupakan daerah dengan tebing yang curam berkisar 70 o hingga 90 o . Penelitian dilakukan dengan menggunakan metode geolistrik resistivitas dengan konfigurasi Wenner . Hasil pengolahan data geolistrik resistivitas menunjukkan bahwa material lempung pasiran dengan tahanan jenis 23,4 Ohm-meter, material lempung kedap air dengan tahanan jenis 30,9–57,3 Ohm-meter diduga sebagai bidang gelincir ( slip-surface ). Hal tersebut disebabkan resapan air hujan yang mencapai lapisan lempung kedap air akan mengalami kontak dengan lapisan lempung, air mengalir diatas lapisan lempung dan menyebabkan hancurnya lapisan lempung sehingga menjadi licin yang kemudian menjadi bidang gelincir. Berdasarkan interpretasi hasil pengolahan data dapat disimpulkan bahwa daerah penelitian memiliki potensi yang tinggi untuk terjadi longsor","PeriodicalId":17685,"journal":{"name":"Jurnal Neutrino","volume":"27 12 1","pages":"67-72"},"PeriodicalIF":0.0,"publicationDate":"2016-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78417509","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}
Telah didesain sistem kontrol temperatur untuk tipe pemanas dengan resistansi rendah (10 mΩ). Kontrol pemanasan dilakukan dengan menggunakan transfomator untuk menghasilkan tegangan pangkal yang rendah dan arus tinggi, sedangkan algoritma sistem kontrol dikembangkan berdasarkan metode tuning PID Ziegler-Nichols. Faktor koreksi untuk parameter PID dari hasil metode Ziegler-Nichols digunakan untuk mereduksi nilai overshoot akibat laju pemanasan yang lebih cepat. Hasil penelitian menunjukkan bahwa sistem yang dirancang dapat bekerja pada tiap nilai set point temperatur yang diberikan meliputi 150, 160, 170, 180, 190 dan 200 0 C dengan waktu respon sekitar 150 sekon dan rata-rata standar deviasi sekitar 0,61 %. Sedangkan hasil pengujian sistem terhadap gangguan menunjukkan bahwa waktu relaksasi yang dibutuhkan sistem untuk menjadi stabil berlangsung sekitar 30 sekon.
{"title":"Desain Sistem Kontrol Temperatur Untuk Tipe Pemanas Dengan Resistansi Rendah","authors":"Agus Budi Jatmika","doi":"10.18860/NEU.V8I2.3278","DOIUrl":"https://doi.org/10.18860/NEU.V8I2.3278","url":null,"abstract":"Telah didesain sistem kontrol temperatur untuk tipe pemanas dengan resistansi rendah (10 mΩ). Kontrol pemanasan dilakukan dengan menggunakan transfomator untuk menghasilkan tegangan pangkal yang rendah dan arus tinggi, sedangkan algoritma sistem kontrol dikembangkan berdasarkan metode tuning PID Ziegler-Nichols. Faktor koreksi untuk parameter PID dari hasil metode Ziegler-Nichols digunakan untuk mereduksi nilai overshoot akibat laju pemanasan yang lebih cepat. Hasil penelitian menunjukkan bahwa sistem yang dirancang dapat bekerja pada tiap nilai set point temperatur yang diberikan meliputi 150, 160, 170, 180, 190 dan 200 0 C dengan waktu respon sekitar 150 sekon dan rata-rata standar deviasi sekitar 0,61 %. Sedangkan hasil pengujian sistem terhadap gangguan menunjukkan bahwa waktu relaksasi yang dibutuhkan sistem untuk menjadi stabil berlangsung sekitar 30 sekon.","PeriodicalId":17685,"journal":{"name":"Jurnal Neutrino","volume":"26 1","pages":"50-57"},"PeriodicalIF":0.0,"publicationDate":"2016-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90216258","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}
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