Journal of Science and Application Technology (JSAT - Institut Teknologi Sumatera)
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PEMODELAN PENGINDERAAN JAUH UNTUK ESTIMASI SIMPANAN KARBON DI BLOK 1 PT ALAM BUKIT TIGAPULUH
Get PDFBiomass calculations are useful for knowing the amount of carbon stored in a forest ecosystem and essential steps to mitigate global warming and climate change. Restoration activities at PT Alam Bukit Tigapuluh (PT ABT) have indirectly made efforts to absorb carbon dioxide (CO2). This study aimed to analyze and measure carbon storage as well a model and map carbon storage at PT ABT. The method used the survey method of species, diameter at breast height, and vegetation height with a plot size of 20mx20m. The research conducted to analyze carbon storage and build a regression model. The results showed that the average carbon storage of the 30 plots was 259.32 tons/ha and the estimated carbon storage is 5,496,233 tC. The best regression model’s modelling result are Y = -817 + 331.5 MSRVI with the correlation of determination being 76.40%. The distribution of carbon storage in PT ABT is divided into 5 classes, namely, non-vegetated class (<0 tons/ha) of 57 ha, low (0-112.55 tons/ha) of 291 ha, medium (112.55-225.11 tons/ha) covering an area of 2,059 ha, high (225.11-337.67 tons/ha) covering an area of 18,533 ha and very high (>337.67 tons/ha) covering an area of 1,256 ha
Analisis Perbaikan Tanah Lunak Metode Preloading Kombinasi Prefabricated Vertical Drain dengan Variasi Spasi Pemasangan PVD: (Case Study : Toll Road Indralaya – Prabumulih)
Get PDFIndonesia memiliki banyak daerah yang bertekstur tanah lunak, salah satunya Pulau Sumatera. Jika pada daerah ini memiliki sifat-sifat tanah yang tidak diharapkan dan begitu lunak akan mengalami kerusakan ketika dibangun suatu bangunan. Perbaikan sifat tanah lunak bisa diperoleh melalui beberapa metode perbaikan tanah salah satunya dengan melakukan pengurangan tekanan air pori (preloading dan vertical drain). Studi kasus dilaksanakan di Proyek Pembangunan Jalan Tol Ruas Simpang Indralaya - Muara Enim Sumatera Selatan. Pada penelitian ini dilakukan analisis perbaikan tanah lunak menggunakan metode analitis dan metode elemen hingga. Analisis spasi PVD berada pada spasi 0,5 m; 1 m; 1,5 m; 2 m; dan 2,5 m serta pola pemasangan antar PVD menggunakan pola segitiga. Analisis timbunan dilakukan dengan perhitungan timbunan bertahap dengan tujuan agar memberikan waktu tanah lunak berkonsolidasi dan memadat sehingga kuat gesernya bertambah. Hasil perhitungan menggunakan analitis didapatkan penurunan sebesar 1,265 m dan elemen hingga mendapatkan penurunan sebesar 1,305 m. Perhitungan analitis waktu yang dibutuhkan untuk mencapai derajat konsolidasi 90% tanpa PVD didapat 468 hari. Analisis dengan elemen hingga waktu yang dibutuhkan untuk mencapai derajat konsolidasi maksimum tanpa PVD didapat sebesar 478 hari. Sedangkan dengan menggunakan PVD waktu yang dibutuhkan pada spasi 0,5 m selama 23 hari, spasi 1 m selama 28 hari, spasi 1,5 m selama 30 hari, spasi 2 m selama 32 hari, dan spasi 2,5 m selama 36 hari
Sintesis dan karakterisasi komposit polipropilena/silika berbasis abu ampas tebu
Get PDFPolypropylene/sugarcane bagasse silica (PP/SiO2) composites have been synthesized. The sol gel method with 1 M NaOH was used to synthesize silica from bagasse ash. The results showed that the silica yield was 52.8%. The resulting silica was blended with polypropylene with a mass ratio variation of 1:5, 1:10, 1:15, 1:20, and 1:25 to obtain PP/SiO2 composites. Composites in variations of 1:5 and 1:10 produce fragile plastic, whereas composites in variations 1:15, 1:20, and 1:25 produce strong and homogeneous plastic. The water resistance test showed that PP/SiO2 with variations of 1:15, 1:20,and 1:25 had good water resistance (> 94%), whereas variations of 1:5 and 1:10, the resistance to water dropped to 80-87%. FT-IR was used to characterize polypropylene, silica synthesized from bagasse ash, and PP/SiO2 composites (1:25) to observe functional group changes. FT-IR analysis showed that silica was successfully synthesized from bagasse ash. This is indicated by a band that widened at a wavenumber of 3400-3600 cm-1, which is characteristic of the O-H strain on water. This band is confirmed by a band with a wavenumber of 1660 cm-1 which is a bend in the O-H in a water molecule. Other silica characteristics can be seen in bands with wavenumbers of 1075 cm-1 and 950 cm-1, which are strains of Si-O, and bands with a wavenumber of 460 cm-1, which is a bend of Si-O. The spectra of polypropylene and PP/SiO2 were also similar. The similarity between the polypropylene and PP/SiO2 spectra indicates that SiO2 spreads homogeneously in polypropylene
OPTIMALISASI PENGELOLAAN PERSAMPAHAN MELALUI PENERAPAN TEKNOLOGI DAN INOVASI DI KOTA BANDAR LAMPUNG
Get PDFBandar Lampung has 1,166,066 people, with waste production reaching 946.35 tons/day. The Ministry of Environment and Forestry has nominated Bandar Lampung as one of Indonesia's dirtiest cities. The waste quantity produced increases, but waste management does not run optimally. In addition, the Bakung TPA still applies the open dumping method so that the waste is immediately disposed of without any processing. The processing carried out is merely limited to composting at several sources of market waste. Technology and innovation in waste management continue to formulate, and it can help improve the quality of waste management. Therefore, this study aims to formulate the best strategy for optimizing the waste management system integrated with technology and innovation. This study used a qualitative deductive approach with descriptive analysis and AWOT analysis (AHP and SWOT). It was concluded that the best strategy to optimize waste management in Bandar Lampung City is the defensive strategy. The strategy consists of fulfilling infrastructure and staff according to standards, increasing efforts and maintenance funds by the government and community retribution, waste socialization movements and simultaneous assistance, optimizing existing technologies and innovations, integrating waste management systems, pursuing a waste monitoring movement, and digitizing the waste management system
PENGARUH PERUBAHAN TATA GUNA LAHAN TERHADAP DISPARITAS REGIONAL ANTARKECAMATAN DI KOTA TANGERANG SELATAN
Get PDFRegional disparity is a phenomenon of economic differences between regions (Bakri, et.al 2016). The Bappeda of Banten Province stated that South Tangerang City experienced a relatively high regional disparity level (Noviar, 2021). Triyanto, et.al (2019) stated that land use changes influenced regional disparity. However, this influence has not been identified in South Tangerang City. This study aims to identify the influence of land use change on regional disparity between sub-districts in South Tangerang City in 2015 and 2019. The data collection technique uses secondary data from related agencies with regional disparity, spatial and multiple linear regression statistical analysis techniques. The results of the analysis show that regional disparity consist of low, medium and high levels. Then, land use changes in 2019 are built-up land use change with an area of 493.29 ha (84.75%) and non-built-up land use change with an area of 88.73 ha (15.25%) out of a total of 582, 02 ha (100%). Furthermore, the influence of built-up land use change (X1) and non-built-up land use change (X2) simultaneously or partially has a significant influence on regional disparity (Y) which is 86%, while the remaining 14% is influenced by other independent not examined variables
Potensi dan Prospek Kampung SAE Cibiru dalam Mewujudkan Kampung Wisata
Get PDFKampung wisata merupakan salah satu manifestasi dari pariwisata alternatif yang mampu memberikan nilai tambah terhadap perekonomian masyarakat akar rumput. Tujuan penelitian ini adalah mengidentifikasi potensi dan prospek Kampung SAE Cibiru dalam mewujudkan kampung wisata di Kota Bandung. Metode yang digunakan adalah metode penelitian kualitatif dengan pendekatan explanatory. Potensi dari Kampung SAE Cibiru saat ini masih memiliki karakteristik dengan mencirikan kawasan perdesaan yang didukung dengan potensi warisan alam berupa kawasan konservasi alam dan lahan sawah abadi atau Lahan Pertanian Pangan Berkelanjutan (LP2B), serta warisan budaya berupa perkampungan tradisional Lembur Saradan dan seni budaya benjang. Dari potensi tersebut, akan menjadi prospek untuk mendukung pengembangan kampung wisata yang dilakukan dengan penerapan konsep budaya Tri Tangtu Dibuana, yaitu : zona buana nyuncung sebagai zona penyangga dengan fungsi kawasan konservasi alam pendukung wisata alam dan agroforestry; zona buana panca tengah sebagai zona pengembang (inti) dengan fungsi pusat wisata yang meliputi wisata kampung tradisional Lembur Saradan, industri rumahan kreatif, dan pendidikan budaya sawah dan agroforestry; serta zona buana larang sebagai zona pendukung dengan fungsi pusat penelitian dan pengelolaan aktivitas kampung wisata
Evaluasi Desain Toilet Umum di Gedung Laboratorium Teknik 2 ITERA dengan pendekatan Ergonomi
Get PDFAs a service room, the function of the toilet in the campus building is very important. A good toilet design will create a healthy space and make the toilet work well. Toilets as rooms with complex utilities are often not designed according to standards. Utility standards in the form of lighting, ventilation, plumbing in some designs are often ignored. This study will discuss the design evaluation on the working drawings and the design of the toilet building on the 2nd floor of the Engineering Laboratory 2, Sumatra Institute of Technology. The research was conducted using a qualitative method by means of surveys, and primary and secondary documentation studies. The results of the study were in the form of evaluation of the design and design of the toilet building in Engineering laboratorium 2 building that will produce recommendations for the right toilet design in terms of utility.
 
Analisis Peta Persebaran dan Pembandingan Hasil Forecasting Ketersediaan Beras di Kabupaten Tulang Bawang Provinsi Lampung
Get PDFThe availability of rice as a staple food commodity is one of the essential aspects in showing food security in an region, and the government must guarantee its availability. Tulang bawang regency is one of the rice barns in Lampung province, with a total population of 427,000 people. This study aims to map the condition of rice availability in Tulang bawang Regency from 2016-to 2020. In addition, this study also aims to analyze the forecasting of rice production, consumption, and availability in Tulang bawang regency. This study uses secondary data from the Food Security Office and the Statistics Center Office of Tulang bawang regency from 2016-to 2022. This research uses mapping analysis processed with microsoft excel and forecasting analysis with linear regression method. The mapping results show that the availability of rice in all sub-districts in Tulang bawang regency is moving towards a surplus from 2016-to 2020, and fewer sub-districts are experiencing a rice availability deficit. Forecasting results on production, consumption, population, and rice availability have residuals with actual data even though the movement trends are both positive
TINGKAT KEPUASAN MASYARAKAT TERHADAP PROGRAM BANTUAN STIMULAN PERUMAHAN SWADAYA (BSPS) (STUDI KASUS: KECAMATAN JATI AGUNG, KABUPATEN LAMPUNG SELATAN)
Get PDFThe problem of uninhabitable houses must get more special handling in order to create a prosperous community life. The Self-Help Housing Stimulant Assistance Program (BSPS) is a government program in providing facilities for low-income households to have decent housing. The provision of services can affect the level of satisfaction of the receiving community, because the level of community satisfaction can measure the success of a service or product provided by the government. (Case Study: Jati Agung District, South Lampung Regency) with the aim of knowing the level of community satisfaction with the quality of services provided in the BSPS program. The analysis used is descriptive qualitative in the form of interviews and documentation in this study using three RLH criteria, namely building safety, adequacy of space or minimum area, and health. The results of the study show that there is a conformity between the RLH criteria that have been built with the BSPS program criteria so that there is satisfaction felt by the community because the suitability is in accordance with what is expected and also because of the good service to create houses with livable conditions and improve people's lives towards a more good
Peramalan Cryptocurrency dengan Autoregressive Integrated Moving Average (ARIMA) dan Risiko Kerugian dengan Value at Risk (VaR)
Get PDFBlockchain is a technology that is used for recording digital transactions that are interconnected and cannot be changed. Cryptocurrencies use blockchain technology, which has advantages due to a high level of security, low fees, and a high return on investment. One of the most popular cryptocurrencies and one that has a high market cap is Bitcoin. High volatility carries the risk of large losses. So it is necessary to analyze the risk of loss and forecast Bitcoin. Forecasting is carried out using the Autoregressive Integrated Moving Average (ARIMA) model, which is then carried out by risk analysis using Value at Risk (VaR) using the Historical Data method. Based on the research results, ARIMA [4,1,2] was great for predicting Bitcoin, with a Mean Absolute Percentage Error (MAPE) of 6%. Based on the results of research with Value at Risk (VaR), investors have a maximum loss tolerance of 5.86% and there is a 5% possibility that the losses will exceed 5.85%