The drought is a routine problem that occurs at several region in Indonesia. Due to the drought, water depletion in the Riam kanan watershed sub-district is very large. Several methods are used to find out and analyze the drought that occurs, one of them is the Theory of Run method. The Theory of Run method is a method to calculate the drought index in the form of the longest duration and the largest number of droughts with a certain return period in some area. The results showed that the longest duration of drought occurred in 2009, for 12 months with the largest number of cumulative droughts was 1125 mm. Based on the drought level distribution map, Aranio Subdistrict was the worst region of drought. In 1998-2002, 2003-2007, 2008-2012, and 2013-2017 the area of drought reached 88,918.62 ha, 90,873.6 ha, all of the Aranio Subdistrict regions , and 69,710.34 ha, respectively.
{"title":"Analisis Kekeringan Menggunakan Metode Theory of Run pada Sub-sub DAS Riam Kanan Kalimantan Selatan","authors":"Munasipah Munasipah, N. Nurlina, Ichsan Ridwan","doi":"10.20527/flux.v1i1.6145","DOIUrl":"https://doi.org/10.20527/flux.v1i1.6145","url":null,"abstract":"The drought is a routine problem that occurs at several region in Indonesia. Due to the drought, water depletion in the Riam kanan watershed sub-district is very large. Several methods are used to find out and analyze the drought that occurs, one of them is the Theory of Run method. The Theory of Run method is a method to calculate the drought index in the form of the longest duration and the largest number of droughts with a certain return period in some area. The results showed that the longest duration of drought occurred in 2009, for 12 months with the largest number of cumulative droughts was 1125 mm. Based on the drought level distribution map, Aranio Subdistrict was the worst region of drought. In 1998-2002, 2003-2007, 2008-2012, and 2013-2017 the area of drought reached 88,918.62 ha, 90,873.6 ha, all of the Aranio Subdistrict regions , and 69,710.34 ha, respectively.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42645450","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}
Karakterisasi pori dari pellet komposit abu layang dan kitosan sebagai adsorben telah dilakukan. Komposit adsorben dibuat dengan campuran abu layang dan kitosan yang diikat silang menggunakan glutaraldehyd dengan perbandingan setiap 2 g, 3 g dan 4 g abu layang dalam 20 mL larutan kitosan yang sudah dilarutkan dalam larutan 5% asam oksalat. Karakterisasi adsorben dilakukan menggunakan Gas Sorption Analyzer untuk mengetahui karakter pori dari abu layang, kitosan dan adsorben komposit. Dari hasil penelitian diperoleh bahwa adsorben dengan abu layang sebanyak 3 g dalam 20 mL larutan kitosan memiliki luas permukaan dan volume total pori terbesar yaitu 31,00 m2/g dan 4,54 (e-02 cc/g) dan rerata jari pori terkecil yaitu 29,30 Å. Serta identifikasi gugus fungsi komposit abu layang-kitosan dari spektrofotometer inframerah menunjukkan adanya gugus fungsional untuk menyerap logam berat yang terlihat pada bilangan gelombang 3433 dan 2932 cm-1.
{"title":"Analisis Perbedaan Luas Permukaaan Pelet Adsorben dari Abu Layang yang Terikat Silang Glutaraldehyd","authors":"Isna Syauqiah, Umi Baroroh Lili Utami, Meina Wulansari Yusniar","doi":"10.20527/flux.v1i1.5927","DOIUrl":"https://doi.org/10.20527/flux.v1i1.5927","url":null,"abstract":"Karakterisasi pori dari pellet komposit abu layang dan kitosan sebagai adsorben telah dilakukan. Komposit adsorben dibuat dengan campuran abu layang dan kitosan yang diikat silang menggunakan glutaraldehyd dengan perbandingan setiap 2 g, 3 g dan 4 g abu layang dalam 20 mL larutan kitosan yang sudah dilarutkan dalam larutan 5% asam oksalat. Karakterisasi adsorben dilakukan menggunakan Gas Sorption Analyzer untuk mengetahui karakter pori dari abu layang, kitosan dan adsorben komposit. Dari hasil penelitian diperoleh bahwa adsorben dengan abu layang sebanyak 3 g dalam 20 mL larutan kitosan memiliki luas permukaan dan volume total pori terbesar yaitu 31,00 m2/g dan 4,54 (e-02 cc/g) dan rerata jari pori terkecil yaitu 29,30 Å. Serta identifikasi gugus fungsi komposit abu layang-kitosan dari spektrofotometer inframerah menunjukkan adanya gugus fungsional untuk menyerap logam berat yang terlihat pada bilangan gelombang 3433 dan 2932 cm-1.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41498069","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}
U. Santoso, Rodiansono Rodiansono, A. Junaidi, Citra Ariyanti, Radhina Oktari, Puput Nopitasari, H. Hasanah
Karakterisasi ukuran partikel menjadi salah satu parameter yang sangat penting dalam uji keberhasilan sintesis mikro- maupun nanomaterial. Walaupun secara teori sudah diketahui bahwa beberapa perlakuan fisika seperti proses penyaringan dan pengeringan dapat berpengaruh terhadap ukuran partikel sampel, tetapi perlakuan ini sering diabaikan sehubungan dengan beberapa teknik karakterisasi, misalnya SEM (scanning electron microscopy) mempersyaratkan sampelnya berbentuk serbuk kering.Penelitian ini bertujuanuntukmendapatkan data imiahtentang pengaruh penyaringan dan pengeringan terhadap ukuran partikel oksida besidengan karakterisasi secara kualitatif menggunakan mikroskop optik. Hasil penelitian menunjukkan bahwa proses penyaringan dan pengeringan dapat mempengaruhi ukuran partikel.
{"title":"Pengaruh Penyaringan dan Pengeringan Terhadap Ukuran Partikel Oksida Besi: Tinjauan Karakterisasi Kualitatif Menggunakan Mikroskop Optik","authors":"U. Santoso, Rodiansono Rodiansono, A. Junaidi, Citra Ariyanti, Radhina Oktari, Puput Nopitasari, H. Hasanah","doi":"10.20527/FLUX.V1I1.6144","DOIUrl":"https://doi.org/10.20527/FLUX.V1I1.6144","url":null,"abstract":"Karakterisasi ukuran partikel menjadi salah satu parameter yang sangat penting dalam uji keberhasilan sintesis mikro- maupun nanomaterial. Walaupun secara teori sudah diketahui bahwa beberapa perlakuan fisika seperti proses penyaringan dan pengeringan dapat berpengaruh terhadap ukuran partikel sampel, tetapi perlakuan ini sering diabaikan sehubungan dengan beberapa teknik karakterisasi, misalnya SEM (scanning electron microscopy) mempersyaratkan sampelnya berbentuk serbuk kering.Penelitian ini bertujuanuntukmendapatkan data imiahtentang pengaruh penyaringan dan pengeringan terhadap ukuran partikel oksida besidengan karakterisasi secara kualitatif menggunakan mikroskop optik. Hasil penelitian menunjukkan bahwa proses penyaringan dan pengeringan dapat mempengaruhi ukuran partikel.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49222391","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}
Silicon Carbide (SiC) merupakan material keramik non-oksida yang memiliki tingkat kekerasan, titik leleh, dan konduktivitas termal yang tinggi. SiC dapat disintesis menggunakan prekursor silika (SiO2) dan karbon (C) dengan memanfaatkan SiO2 sebagai sumber silikon (Si). SiC telah disintesis dari sekam padimenggunakan prekursor SiO2 dan C dengan metode reduksi magnesiotermik. Sintesis SiC dilakukan dengan mencampurkan SiO2 dan C pada perbandingan rasio 1:3, kemudian diberi penambahan magnesium (Mg) dengan variasi massa dari 1,0 g, 1,5 g, dan 2,0 g. Selanjutnya, semua sampel dipanaskan dalam furnace pada temperatur 600 C selama 3 jam. Fase terbentuknya SiC diindikasikan dengan warna fisik pada setiap sampel yang berubah dari abu-abu menjadi putih kehijauan. Selanjutnya serbuk SiC dikarakterisasi menggunakan fourier transform infrared (FTIR) untuk mengetahui gugus fungsi dan X-Ray Diffractometer (XRD) untuk mengetahui derajat kristalinitas, sudut difraksi 2 , dan jarak antar kisi (d). Hasil karakterisasi FTIR menunjukkan adanya ikatan Si–C pada bilangan gelombang 786,89 – 941,19 cm-1. SiC yang diperoleh pada semua sampel memiliki struktur kubik (β-phase) atau dapat disebut β–SiC dengan karakteristik dhkl (111) dan parameter kisi pada kisaran 0,43 nm berdasarkan analisa menggunakan XRD. Penambahan 1 g Mg menghasilkan SiC yang terbaik dengan puncak intensitas difraksi 54 a.u pada sudut 36,04 . Semakin tinggi penambahan Mg pada proses sintesis menyebabkan penurunan intensitas, derajat kristalinitas, dan memperbesar ukuran kristal β–SiC. β–SiC yang disintesis dari sekam padi dengan temperatur rendah ini dapat diaplikasikan sebagai material keramik. Namun, diperlukan karakterisasi lebih lanjut menggunakan thermogravimetrical analysis (TGA) untuk mengetahui titik leleh serbuk SiC.
{"title":"Sintesis dan Karakterisasi Silicon Carbide (SiC) dari Sekam Padi Menggunakan Metode Reduksi Magnesiotermik","authors":"A. Sulaeman, Sugianto Arjo, Akhiruddin Maddu","doi":"10.20527/flux.v1i1.6146","DOIUrl":"https://doi.org/10.20527/flux.v1i1.6146","url":null,"abstract":"Silicon Carbide (SiC) merupakan material keramik non-oksida yang memiliki tingkat kekerasan, titik leleh, dan konduktivitas termal yang tinggi. SiC dapat disintesis menggunakan prekursor silika (SiO2) dan karbon (C) dengan memanfaatkan SiO2 sebagai sumber silikon (Si). SiC telah disintesis dari sekam padimenggunakan prekursor SiO2 dan C dengan metode reduksi magnesiotermik. Sintesis SiC dilakukan dengan mencampurkan SiO2 dan C pada perbandingan rasio 1:3, kemudian diberi penambahan magnesium (Mg) dengan variasi massa dari 1,0 g, 1,5 g, dan 2,0 g. Selanjutnya, semua sampel dipanaskan dalam furnace pada temperatur 600 C selama 3 jam. Fase terbentuknya SiC diindikasikan dengan warna fisik pada setiap sampel yang berubah dari abu-abu menjadi putih kehijauan. Selanjutnya serbuk SiC dikarakterisasi menggunakan fourier transform infrared (FTIR) untuk mengetahui gugus fungsi dan X-Ray Diffractometer (XRD) untuk mengetahui derajat kristalinitas, sudut difraksi 2 , dan jarak antar kisi (d). Hasil karakterisasi FTIR menunjukkan adanya ikatan Si–C pada bilangan gelombang 786,89 – 941,19 cm-1. SiC yang diperoleh pada semua sampel memiliki struktur kubik (β-phase) atau dapat disebut β–SiC dengan karakteristik dhkl (111) dan parameter kisi pada kisaran 0,43 nm berdasarkan analisa menggunakan XRD. Penambahan 1 g Mg menghasilkan SiC yang terbaik dengan puncak intensitas difraksi 54 a.u pada sudut 36,04 . Semakin tinggi penambahan Mg pada proses sintesis menyebabkan penurunan intensitas, derajat kristalinitas, dan memperbesar ukuran kristal β–SiC. β–SiC yang disintesis dari sekam padi dengan temperatur rendah ini dapat diaplikasikan sebagai material keramik. Namun, diperlukan karakterisasi lebih lanjut menggunakan thermogravimetrical analysis (TGA) untuk mengetahui titik leleh serbuk SiC.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45672830","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}
Nurhikmah Nurhikmah, Iwan Sugriwan, A. A. Harnawan
ATMega8535 microcontroller based data acquisition system for measure carbon monoxide gas with TGS 2600 carbon monoxide sensor has been realized. The equation of sensor characteristic is obtained by compared the value of carbon monoxide gases with voltage signal from TGS 2600 carbon monoxide sensor. The value of carbon monoxide gases concentration measured by Sanfix. The equation of sensor characteristic gave formula V = 0,1266 ln(x) + 0,0049, which V in voltage (volt) and x in part per million (ppm). The voltage signal as a product of sensor conditioned by voltage follower that applying OP07. the output signal from voltage follower connected with port A0, analog input in ATMega8535 microcontroller. Port A0 in ATMega8535 microcontroller has analog to digital converter (ADC) internally. The measurement data is displayed on the LCD character 16x2 and laptop via serial communication with Delphi interface program that it could noted the data in real time and could store the measurement data onto file in the form .xlsx. the system also used XAMPP program to store measurement data onto the form database. The range measurement of measuring instrument made is 6 to 80 ppm.
{"title":"Pembuatan Sistem Akuisisi Gas Karbon Monoksida Berbasis ATMega8535","authors":"Nurhikmah Nurhikmah, Iwan Sugriwan, A. A. Harnawan","doi":"10.20527/FLUX.V1I1.6142","DOIUrl":"https://doi.org/10.20527/FLUX.V1I1.6142","url":null,"abstract":"ATMega8535 microcontroller based data acquisition system for measure carbon monoxide gas with TGS 2600 carbon monoxide sensor has been realized. The equation of sensor characteristic is obtained by compared the value of carbon monoxide gases with voltage signal from TGS 2600 carbon monoxide sensor. The value of carbon monoxide gases concentration measured by Sanfix. The equation of sensor characteristic gave formula V = 0,1266 ln(x) + 0,0049, which V in voltage (volt) and x in part per million (ppm). The voltage signal as a product of sensor conditioned by voltage follower that applying OP07. the output signal from voltage follower connected with port A0, analog input in ATMega8535 microcontroller. Port A0 in ATMega8535 microcontroller has analog to digital converter (ADC) internally. The measurement data is displayed on the LCD character 16x2 and laptop via serial communication with Delphi interface program that it could noted the data in real time and could store the measurement data onto file in the form .xlsx. the system also used XAMPP program to store measurement data onto the form database. The range measurement of measuring instrument made is 6 to 80 ppm.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42179857","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}
Rahmatullah Rahmat, A. A. Harnawan, Suryajaya Suryajaya
Sistem komunikasi nirkabel dengan menggunakan modul nRF24L01+ yang memanfaatkan gelombang Radio Frequency 2.4 GHz telah diimplementasikan pada Ading Pintar (Automatic Feeding Penebar Pakan Ikan Pintar). Sistem ini digunakan untuk menampilkan informasi terbaru yang dikerjakan oleh ading pintar. Informasi yang dikirimkan oleh ading pintar kemudian diterima oleh modul yang disebut sistem slave. Informasi tersebut terdiri dari status pemberian pakan serta kondisi suhu dan pH air kolam. Informasi yang diterima oleh sistem slave disimpan di dalam memori, dimana data tersebut dapat menjadi bahan evaluasi kinerja ading pintar oleh pemilik kolam. Implementasi sistem komunikasi nirkabel ini menggunakan beberapa komponen diantaranya, Arduino Mega 2560, modul nRF24L01+, modul LCD keypad shield, modul RTC DS3231, Modul SD Card serta modifikasi program pada ading pintar dan sistem slave. Pengujian sistem dilakukan selama 4 hari secara terus-menerus dengan menempatkan ading pintar di laboratorium instrumentasi fisika FMIPA ULM sedangkan sistem slave ditempatkan di laboratorium komputasi fisika FMIPA ULM. Berdasarkan hasil pengujian, sistem komunikasi nirkabel pada ading pintar dan sistem slave bekerja dengan baik, dimana informasi suhu dan pH air kolam yang dikirimkan oleh ading pintar sama dengan yang diterima oleh sistem slave. Selain itu status pemberian pakan juga bekerja dengan baik, dimana setelah ading pintar selesai memberi pakan, indikator pemberian pakan yang tertera pada LCD sistem slave yang semula tanda silang berubah menjadi tanda centang. Tanda tersebut akan secara otomatis direset menjadi tanda silang setiap pukul 00:00 WITA.
在Smart Ading上实现了一个使用nRF24L01+模块、使用2.4GHz射频波的电缆通信系统。该系统用于显示智能阅读完成的最新信息。智能读取发送的信息然后由一个称为从系统的模块接收。该信息包括池水的供应状态、温度和pH值。从系统接收的信息存储在存储器中，其中数据可以是池所有者性能评估的主题。该有线通信系统的实现使用了几个组件，Arduino Mega 2560、nRF24L01+模块、LCD键盘屏蔽模块、RTC DS3231模块、SD卡模块以及智能读写和从系统上的程序修改。[UNK]通过在FMIPA ULM物理仪器实验室中放置智能加法器，连续进行4天的系统测试，而从系统位于FMIPA ULM物理计算实验室中。根据测试结果，智能电网和从系统上的无线通信系统运行良好，其中智能电网发送的池水温度信息和pH值与从系统接收的相同。此外，电源的供电状态也很好，在智能负载完成供电后，LCD从系统上的电源指示器（恢复十字标志）变为中心线。该符号将自动设置为每00:00 WITA的交叉符号。
{"title":"Implementasi Sistem Komunikasi Nirkabel pada Ading Pintar Menggunakan Modul nRF24L01+","authors":"Rahmatullah Rahmat, A. A. Harnawan, Suryajaya Suryajaya","doi":"10.20527/flux.v1i1.6143","DOIUrl":"https://doi.org/10.20527/flux.v1i1.6143","url":null,"abstract":"Sistem komunikasi nirkabel dengan menggunakan modul nRF24L01+ yang memanfaatkan gelombang Radio Frequency 2.4 GHz telah diimplementasikan pada Ading Pintar (Automatic Feeding Penebar Pakan Ikan Pintar). Sistem ini digunakan untuk menampilkan informasi terbaru yang dikerjakan oleh ading pintar. Informasi yang dikirimkan oleh ading pintar kemudian diterima oleh modul yang disebut sistem slave. Informasi tersebut terdiri dari status pemberian pakan serta kondisi suhu dan pH air kolam. Informasi yang diterima oleh sistem slave disimpan di dalam memori, dimana data tersebut dapat menjadi bahan evaluasi kinerja ading pintar oleh pemilik kolam. Implementasi sistem komunikasi nirkabel ini menggunakan beberapa komponen diantaranya, Arduino Mega 2560, modul nRF24L01+, modul LCD keypad shield, modul RTC DS3231, Modul SD Card serta modifikasi program pada ading pintar dan sistem slave. Pengujian sistem dilakukan selama 4 hari secara terus-menerus dengan menempatkan ading pintar di laboratorium instrumentasi fisika FMIPA ULM sedangkan sistem slave ditempatkan di laboratorium komputasi fisika FMIPA ULM. Berdasarkan hasil pengujian, sistem komunikasi nirkabel pada ading pintar dan sistem slave bekerja dengan baik, dimana informasi suhu dan pH air kolam yang dikirimkan oleh ading pintar sama dengan yang diterima oleh sistem slave. Selain itu status pemberian pakan juga bekerja dengan baik, dimana setelah ading pintar selesai memberi pakan, indikator pemberian pakan yang tertera pada LCD sistem slave yang semula tanda silang berubah menjadi tanda centang. Tanda tersebut akan secara otomatis direset menjadi tanda silang setiap pukul 00:00 WITA.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44386246","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}
Pub Date : 2018-12-13DOI: 10.20527/FLUX.V15I2.5039
Y. Yulianto, Zaki Zu'ud
The height of the barrier between the interacting nuclei is one of the interesting topics in nuclear reaction, especially in charged-particle nuclear reactions. Wong formula is one method that can be used to perform such study, especially about fusion cross section. Therefore, a study about fusion cross sections of some light nuclei with Wong formula becomes very interesting to be performed. In this study, the fusion cross sections of 12C+12C and 16O+16O reactions have been calculated by using Wong formula at 12<=E<=32 MeV of energies. The potential of the interacting nuclei was approached by using Woods-Saxon potential. The calculations performed numerically by using both finite different and Nelder-Mead methods. The obtained results of this study have achieved a good agreement with the experimental results and the calculation results of the other researchers. Those results were indicated that Wong formula has good capability in explaining the experimental results concerning fusion cross section of light nuclei.
{"title":"Numerical Study of Fusion Cross Sections for 12C+12C and 16O+16O Reactions by Using Wong Formula","authors":"Y. Yulianto, Zaki Zu'ud","doi":"10.20527/FLUX.V15I2.5039","DOIUrl":"https://doi.org/10.20527/FLUX.V15I2.5039","url":null,"abstract":"The height of the barrier between the interacting nuclei is one of the interesting topics in nuclear reaction, especially in charged-particle nuclear reactions. Wong formula is one method that can be used to perform such study, especially about fusion cross section. Therefore, a study about fusion cross sections of some light nuclei with Wong formula becomes very interesting to be performed. In this study, the fusion cross sections of 12C+12C and 16O+16O reactions have been calculated by using Wong formula at 12<=E<=32 MeV of energies. The potential of the interacting nuclei was approached by using Woods-Saxon potential. The calculations performed numerically by using both finite different and Nelder-Mead methods. The obtained results of this study have achieved a good agreement with the experimental results and the calculation results of the other researchers. Those results were indicated that Wong formula has good capability in explaining the experimental results concerning fusion cross section of light nuclei.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44922470","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}
Pub Date : 2018-12-13DOI: 10.20527/flux.v15i2.4954
T. Fitrianto, S. Supriyadi, Ulil Albab Taufiq, T. M. Mukromin, Anggit Pranatya Wardana
This research aimed to determine location and distribution of groundwater in Bapangsari, Bagelen, Purworejo. This research used Vertical Electrical Sounding (VES) method with Schlumberger configuration. Research data were taken by using resistivity meter IPMGEO. This research did on 2 locations with length of line is 180 m. The data were processed using software Microsoft Excel and IP2WIN. Based on result of the research. On the first location, groundwater is at 32,2 m depth with 3,3 m thick. On the first location, groundwater is at 34,6 m depth with 9,58 m thick. Groundwater on the first location is shallower than second location. However, on the first location have over burden. The over burden has big enough resistivity value (higher than 100 ohm m). This value has been identifying of a solid layer. The layer is andesitic breccia. While on second location, the over burden has small enough resistivity value (50 ohm m). This value has been identifying of a sedimentary layer. The layer is weathered breccia and gravel.
{"title":"Identifikasi Potensi Air Tanah Menggunakan Metode Geolistrik Resistivitas Konfigurasi Schlumberger di Kelurahan Bapangsari Kecamatan Bagelen Kabupaten Purworejo","authors":"T. Fitrianto, S. Supriyadi, Ulil Albab Taufiq, T. M. Mukromin, Anggit Pranatya Wardana","doi":"10.20527/flux.v15i2.4954","DOIUrl":"https://doi.org/10.20527/flux.v15i2.4954","url":null,"abstract":"This research aimed to determine location and distribution of groundwater in Bapangsari, Bagelen, Purworejo. This research used Vertical Electrical Sounding (VES) method with Schlumberger configuration. Research data were taken by using resistivity meter IPMGEO. This research did on 2 locations with length of line is 180 m. The data were processed using software Microsoft Excel and IP2WIN. Based on result of the research. On the first location, groundwater is at 32,2 m depth with 3,3 m thick. On the first location, groundwater is at 34,6 m depth with 9,58 m thick. Groundwater on the first location is shallower than second location. However, on the first location have over burden. The over burden has big enough resistivity value (higher than 100 ohm m). This value has been identifying of a solid layer. The layer is andesitic breccia. While on second location, the over burden has small enough resistivity value (50 ohm m). This value has been identifying of a sedimentary layer. The layer is weathered breccia and gravel.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43777028","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}
Pub Date : 2018-12-13DOI: 10.20527/FLUX.V15I2.4929
Efta Yudiarsah, Andi Muhammad Risqi
The localization length and the Density Of State (DOS) of electron in a Poly(dA)-Poly(dT) DNA molecule at two temperatures have been calculated for several values of magnetic field. The calculation are carried out on a DNA molecule model that consists of adenine (A) and Thymine (T) nucleobases and sugar-phosphate backbone . The DNA molecule is modeled in tight binding Hamiltonian approach with semi empiri cal Slater-Koster theory and Peierls phase factor for introducing the effect of temperature and magnetic field, respectively . In the model, electron is allowed to move between nucleobase sites, backbode sites, and between backbone site and nucleobase site. The localization length is obtained from the smallest Lyapunov exponent which is calculated using transfer matri x method along with Gram-Schmidt ort h onormali zation procedure . The DOS is calculated using Green ’s function method by taking into account the presence of metallic electrode at both ends of the DNA molecule . The localization length and the DOS change as a result of the change in electron wave phase due to magnetic field. The change is observed at both temperature used in the study, but the change at lower temperature is larger than the one at higher temperature. Thermally agitated vibrational twisting motion perturbs electron motion in the DNA molecule such that the influence of magnetic field on the localization length and the DOS of electron at higher temperature becomes smaller.
{"title":"Perubahan Panjang Lokalisasi dan Kerapatan Keadaan Elektron pada Molekul DNA Poli(dA)-Poli(dT) Karena Medan Magnet","authors":"Efta Yudiarsah, Andi Muhammad Risqi","doi":"10.20527/FLUX.V15I2.4929","DOIUrl":"https://doi.org/10.20527/FLUX.V15I2.4929","url":null,"abstract":"The localization length and the Density Of State (DOS) of electron in a Poly(dA)-Poly(dT) DNA molecule at two temperatures have been calculated for several values of magnetic field. The calculation are carried out on a DNA molecule model that consists of adenine (A) and Thymine (T) nucleobases and sugar-phosphate backbone . The DNA molecule is modeled in tight binding Hamiltonian approach with semi empiri cal Slater-Koster theory and Peierls phase factor for introducing the effect of temperature and magnetic field, respectively . In the model, electron is allowed to move between nucleobase sites, backbode sites, and between backbone site and nucleobase site. The localization length is obtained from the smallest Lyapunov exponent which is calculated using transfer matri x method along with Gram-Schmidt ort h onormali zation procedure . The DOS is calculated using Green ’s function method by taking into account the presence of metallic electrode at both ends of the DNA molecule . The localization length and the DOS change as a result of the change in electron wave phase due to magnetic field. The change is observed at both temperature used in the study, but the change at lower temperature is larger than the one at higher temperature. Thermally agitated vibrational twisting motion perturbs electron motion in the DNA molecule such that the influence of magnetic field on the localization length and the DOS of electron at higher temperature becomes smaller.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45357739","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}
Pub Date : 2018-12-13DOI: 10.20527/flux.v15i2.5117
Ronna Royani Hotang, Dina Sarwuna, Erin Septi Munfaatun, Octolia Togibasa
Pada penelitian sebelumnya, kami telah berhasil membuat biobaterai dari pasta elektrolit ketapang (Terminalia catappa L.). Namun demikian, peran glukosa dalam menghasilkan arus listrik dalam biobaterai masih menjadi suatu pertanyaan. Pada penelitian ini kami menyelidiki secara rinci akan kandungan glukosa dalam pasta elektrolit ketapang, dan melihat bagaimana hubungannya terhadap produksi arus listrik dalam biobaterai. Pengukuran kandungan glukosa dilakukan dengan menggunakan metode Miller, dimana nilai absorbansi dari larutan pasta diukur menggunakan Spectrophotometer-UV.Hasilnya menunjukkan adanya hubungan linier antara kandungan glukosa terhadap arus listrik pada biobaterai dari pasta elektrolit ketapang. Pasta segar diketahui memiliki konsentrasi glukosa sebesar 23.9 mg / mldan dapat menghasilkan arus sebesar 1 mA, pada saat biobaterai dipasang hambatan sebesar 100 Ω.
{"title":"Pengaruh Kandungan Glukosa terhadap Arus Listrik pada Biobaterai dari Pasta Elektrolit Ketapang(Terminalia catappa L.)","authors":"Ronna Royani Hotang, Dina Sarwuna, Erin Septi Munfaatun, Octolia Togibasa","doi":"10.20527/flux.v15i2.5117","DOIUrl":"https://doi.org/10.20527/flux.v15i2.5117","url":null,"abstract":"Pada penelitian sebelumnya, kami telah berhasil membuat biobaterai dari pasta elektrolit ketapang (Terminalia catappa L.). Namun demikian, peran glukosa dalam menghasilkan arus listrik dalam biobaterai masih menjadi suatu pertanyaan. Pada penelitian ini kami menyelidiki secara rinci akan kandungan glukosa dalam pasta elektrolit ketapang, dan melihat bagaimana hubungannya terhadap produksi arus listrik dalam biobaterai. Pengukuran kandungan glukosa dilakukan dengan menggunakan metode Miller, dimana nilai absorbansi dari larutan pasta diukur menggunakan Spectrophotometer-UV.Hasilnya menunjukkan adanya hubungan linier antara kandungan glukosa terhadap arus listrik pada biobaterai dari pasta elektrolit ketapang. Pasta segar diketahui memiliki konsentrasi glukosa sebesar 23.9 mg / mldan dapat menghasilkan arus sebesar 1 mA, pada saat biobaterai dipasang hambatan sebesar 100 Ω.","PeriodicalId":34112,"journal":{"name":"Jurnal Fisika Flux","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47012494","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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