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Journal : Science and Technology Indonesia

Bamboo distribution in Musi Rawas District South Sumatera Province Elyani Ami; Zulkifli Dahlan; Laila Hanum
Science and Technology Indonesia Vol. 2 No. 4 (2017): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (912.369 KB) | DOI: 10.26554/sti.2017.2.4.105-109

Abstract

Indonesia is estimated to have 157 species of bamboo which is more than 10% of the world's bamboo species. Almost 50% of bamboo growth in Indonesia is endemic bamboo and more than 50% of bamboo species life in Indonesia have been utilized by the society conventionally. Further, the bamboo utilization is still having high potential to be developed by increasing the industrial development. This research aimed to investigate the diversity of the bamboo species in South Sumatera, particularly in Musi Rawas district. The result showed that in Musi Rawas district of South Sumatera province there are 10 species of bamboo located at 11 locations in protected forest area of 883.60 ha and production forest area of 177,976.26 ha. The large number of bamboo potentials viewed from various aspects and the many types of bamboo scattered in this district can be a supporting data in doing bamboo conservation efforts, especially in Musi Rawas district of South Sumatra province.
Comparison of CTAB Method and Wizard Genomic DNA Purification System Kit from Promega on DNA Isolation of Local Varities of Rice of South Sumatera Laila Hanum; Yuanita Windusari; Arum Setiawan; Muharni Muharni; Fikri Adriansyah; Amin Ali Mubarok
Science and Technology Indonesia Vol. 3 No. 1 (2018): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (338.268 KB) | DOI: 10.26554/sti.2018.3.1.26-29

Abstract

Research in the molecular field requires DNA with a high degree of purity. Local rice varieties of South Sumatra have different leaf texture so that in isolation process to obtain DNA with high purity level required the right method. This study aims to compare the quality and quantity of purity of local rice insulation of local rice varieties of South Sumatra with different methods of CTAB and Wizard Genomic DNA Purification System Kit from Promega. The research was conducted from August 2015 to December 2015 at the Laboratory of Microbiology and Genetics and Biotechnology Laboratory, Department of Biology, Faculty of Mathematics and Natural Sciences, Sriwijaya University. The method used is DNA isolation method Wizard Genomic DNA Purification System Kit from promega and CTAB. Based on research that has been done result of DNA visualization showed that DNA isolate CTAB method still have smears while DNA isolate method of Wizard Genomic DNA Purification System Kit from promega not. The average DNA isolate concentration of Wizard Genomic DNA Purification System Kit method is A260 / 280 = 1.853 μg / ml. The average DNA isolate concentration of CTAB method is A260 / 280 = 1,705 μg / ml. Isolation of Rice DNA of local variety of South Sumatera using DNA method of Genomic DNA Purification System Kit from promega has higher quality and quantity compared to CTAB method.
Morphological Diversity of Lansium domesticum Corr in South Sumatra Rupiah Rupiah Rupiah; Laila Hanum; Zaidan P Negara; Zulkifli Dahlan; Indra Yustian
Science and Technology Indonesia Vol. 3 No. 1 (2018): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (462.195 KB) | DOI: 10.26554/sti.2018.3.1.41-44

Abstract

Research on the Morphological Diversity of Lansium domesticum Corr in South Sumatra aims to examine the morphological diversity of L. domesticum in South Sumatra. The research was conducted in April 2017 to June 2017. This research was conducted by means of exploration carried out in seven districts covering, East Ogan Komering Ulu District, South Ogan Komering Ulu District, Ogan Komering Ulu District, Musirawas District, Ogan Komering Ilir District, Muara Enim District and Musi Banyuasin District. Sampling was done using purposive sampling method. Observation of morphological diversity was done by characterization of morphology and analyzed by the descriptive method. The result of this research shows that in South Sumatera, there were two variants of L. domesticum namely L. domesticum variant duku and L. domesticum variant langsat. Morphological characters that distinguish between duku and langsat variants were found under canopy conditions, the presence of hair on top and bottom surfaces of leaves, fruit shape, fruit skin thickness, fruit taste, and the presence of sap on ripe fruit.
Analysis of Vegetation in Green Open Space of Gasing Industrial Area Siti Indah Oktaviani; Laila Hanum; Zaidan P Negara
Science and Technology Indonesia Vol. 3 No. 2 (2018): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (684.155 KB) | DOI: 10.26554/sti.2018.3.2.81-88

Abstract

The study aims to determine the diversity of vegetation in the Green Open Space of the Gasing Industrial Area. The study was conducted from April to July 2017. The method of analysis used quadratic method with 2 plots at different location with three repetitions, quantitative data analysis was done on density value, dominance, frequency, important value and diversity index of each plant species. The results showed that vegetation consists of 16 tribes and 19 species, dominated by Pteridophyta and Spermatophyta. Value of vegetation diversity (2,24) and uniformity value 0,30. The higher number of the species, the higher diversity index of the species. Such characteristics are caused by environmental influences such as organic matter content and low pH and factors derived from human intervention. Keywords: Vegetation, Diversity, industrial area
3-Phase Matheuristic Model in Two-Dimensional Cutting Stock Problem of Triangular Shape Items Putra Bahtera Jaya Bangun; Sisca Octarina; Sisca Puspita Sepriliani; Laila Hanum; Endro Sastro cahyono
Science and Technology Indonesia Vol. 5 No. 1 (2020): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1397.786 KB) | DOI: 10.26554/sti.2020.5.1.23-27

Abstract

Cutting Stock Problem (CSP) is a problem of cutting stocks with certain cutting rules. This study used the data of rectangular stocks, which cut into triangular shape items with various order sizes. The Modified Branch and Bound Algorithm (MBBA) was used to determine the optimum cutting pattern then formulated it into the 3-Phase Matheuristic model which consisted of constructive phase, improvement phase, and compaction phase. Based on the results, it showed that the MBBA produces three optimum cutting patterns, which was used six times, eight times, and four times respectively to fulfill the consumer demand. Then the cutting patterns were formulated into the 3-Phase Matheuristic model whereas the optimum solution was the minimum trim loss for the first, second and third patterns.
Column Generation Model in Capacitated Multi-Periods Cutting Stock Problem with Pattern Set-Up Cost Putra Bahtera Jaya Bangun; Sisca Octarina; Laila Hanum; Ranti Sawitri; Endro Sastro Cahyono
Science and Technology Indonesia Vol. 6 No. 1 (2021): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1195.562 KB) | DOI: 10.26554/sti.2021.6.1.8-13

Abstract

Cutting Stock Problem (CSP) determines the cutting of stocks with standard length and width to meet the item’s demand. The optimal cutting pattern will minimize the usage of stocks and trim loss. This research implemented the pattern generation algorithm to form the Gilmore-Gomory and Column Generation model in two-dimensional CSP. The CSP in this research had three periods of cutting with different capacities in each period. The Column Generation model added the pattern set-up cost as the constraint. The Gilmore-Gomory model ensured that the first stage’s strips were used in the second stage and met the item’s demand. Based on the Column Generation model’s solution, the 1st period used the 2nd, 4th, and 5th patterns, the 2nd period used 4th and 5th patterns, and the 3rd period did not use any patterns. The first and second periods fulfilled all of the demands.
Set Covering Model Using Greedy Heuristic Algorithm to Determine The Temporary Waste Disposal Sites in Palembang Putra Bahtera Jaya Bangun; Sisca Octarina; Rizka Aniza; Laila Hanum; Fitri Maya Puspita; Siti Suzlin Supadi
Science and Technology Indonesia Vol. 7 No. 1 (2022): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (986.328 KB) | DOI: 10.26554/sti.2022.7.1.98-105

Abstract

Optimizing the facility location has a vital role in providing services to the community. This study aims to determine the Temporary Waste Disposal Site (TWDS) in Sako District, Palembang City. The distance data between each TWDS in Sako District is used to formulate the Set Covering model, consisting of the Set Covering Location Problem (SCLP) model and the p-Median Problem model. The classical approach is made by solving both models using Lingo 18.0 software. The Greedy Heuristic algorithm is used as the heuristic approach. Based on the results and discussion, Sako District consists of 4 Villages and 9 TWDS. The SCLP and p-Median Problem models with LINGO 18.0 software and the Greedy Heuristic algorithm show a difference. The study results suggest using the optimal solution resulting from the Greedy Heuristic algorithm because it can meet all requests in Sako District. Research shows that there are six optimal TWDS in Sako District. However, several locations are still not optimal, so it is recommended that there are an additional 14 new TWDS facilities in Sako District to serve all requests.
Formulation of Set Covering Problem Using Myopic Algorithm and Greedy Reduction Algorithm in Determining the Location of Temporary Landfills in Semambu Island Village, Ogan Ilir Regency, South Sumatra Fitri Maya Puspita; Sisca Octarina; Laila Hanum; Chatrin Yohana Simamora; Helena Valenta Br Kemit; Evi Yuliza
Science and Technology Indonesia Vol. 8 No. 2 (2023): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2023.8.2.184-194

Abstract

This study discusses Set Covering Problem (SCP) in designing the optimal temporary waste disposal site (TWDS) in Semambu Island Village using the Myopic Algorithm (MA) and Greedy Reduction Algorithm (GRA). The analysis was carried out and compared using a maximum distance of 500m and 1000m to get the best solution from two methods. The results of the p Median Problem by LINGO 13.0 software and MA with a maximum distance of 500m show the same TWDS location, namely Working Area (WA) 1, 2, 3, 4, 5, and 6 with the location of the candidate TWDS being at TWDS 2 WA 1, TWDS 1 WA 2, TWDS 2 WA 3, and TWDS 2 WA 5. For 1000m, it will be the location of the candidate’s TWDS being at TWDS 2 WA 1, TWDS WA 2, and TWDS 2 WA 3. Using GRA, results were obtained will be 4 TWDS, namely TWDS 2 Hamlet 1, TWDS 1 Hamlet 2, TWDS 2 Hamlet 3, TWDS 2, Hamlet 5. Then using GRA, 2 solutions are obtained, namely columns 2 and 5 which dominate. Column 2 nomination are Hamlets 1, 2, 3, and 6. Column 5 which dominates will be Hamlets 1, 3, 5, and 6.
Co-Authors Aditya K. Karim Aditya K. Karim Adriansyah, Fikri Affandi, Azhar Kholiq Affrita, Tia Maya Afnur Imsya Aldes Lesbani Ali Djamhuri Amin Ali Mubarok Amin Rejo Andika Puspita Dewi Annisa Kemala Tasya Artanti, Widyana Beta Arum Setiawan Arum Setiawan Arum Setiawan Arum Setiawan Aryani, Robeah Astri Indah Lestari Ayu Nursafitri Ayu Safitri Chatrin Yohana Simamora Dedek Kurniawan Deni Julius Destia Maharani Destri, Erin Dewi Lisandra Doni Setiawan Dwi Asmono Dwi Septiawati, Dwi Eddy Ibrahim Edward Saleh Eka Haryati Yuliany Elisa Nurnawati Elvi Rusmiyanto Pancaning Wardoyo, Suci Lestari, Mukarlina, Elyani Ami Endro Sastro cahyono Enggar Patriono Ervina Indrayani Ervina Indrayani Erwin Nofyan Evi Yuliza Evi Yuliza Evi Yuliza, Evi Fahira, Aulia Fidella Oktariana Fikri Adriansyah Fikri Adriansyah Fikri Adriansyah Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Harvianti, Yuniar Hary Widjajanti hasana, nurdiah Helena Valenta Br Kemit Hernanda, Eggyana Deri Hikayati I Gusti Wayan Murjana Yasa Indra Yustian Indrawati Indrawati Irmawan Farindra Irmeilyana Juswardi Juswardi, Juswardi Lestari, Astri Indah Lestari, Margareta Sri Maretasari, Giri Margareta Sri Lestari Margareta Sri Lestari, Margareta Sri Maya Puspita, Fitri Melisyah, Melisyah Melwita, Elda Mery Hasmeda Muharni Muharni Muharni, . Mustafa Kamal Mustafa Kamal Nabila Aprianti Negara, Zaidan Panji Ngudiantoro . Nina Tanzerina Nita Aminasih Nita Aminasih Novira, Sandra Nur Arifah Nuriessa Aputri, Farah Nursela, Dewi Parwanti, Sri Permata, Ending Pratiwi, Putri Rizki Putra Bahtera Jaya Bangun Putra Bahtera Jaya Bangun Putra BJ Bangun, Putra BJ R. Rugayah Rahmat Pratama Rahmat Pratama Rahmat Pratama, Rahmat Ranti Sawitri Ratih Wijayanti, Ratih Reza Andeka Rina S. Kasiamdari Rina S. Kasiamdari Rina Sri Kasiamdari Rizka Aniza Robeah Aryani Rosmania, Rosmania Rugayah Rugayah Rupiah Rupiah Rupiah Rusdi, Muhammad Salsabeela S. Santosa Salni Salni Salni Santika, Baitha Santosa . Santosa Santosa Sarno Sarno Sarno Sarno Sarno Sarno Sarno Sarno Singgih Tri Wardana Singgih Tri Wardana Sisca Octarina Sisca Puspita Sepriliani Siti Indah Oktaviani Siti Indah Oktaviani Siti Suzlin Supadi Suheyanto Suheryanto Sulaksono, Gogoh Syafrina Lamin, Syafrina Tri Handayani Venty Warda Elmaida Rusdi Wendra, Fahmi Wijaya, Alfan Windusari, Yuanita Yadi Oktariansyah Yolanda Fitria Yuanita Windusari Yuanita Windusari Yuanita Windusari Yuanita Windusari Yuanita Windusari Yuanita Windusari Yulia Anisawati Yuliany, Eka Haryati Zahrial Effendi Zaidan P Negara Zulkifli Dahlan Zulkifli Dahlan Zulkifli Dahlan