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All Journal Jurnal Akuakultur Indonesia Jurnal Spektra Journal of Geoscience, Engineering, Environment, and Technology Petro : Jurnal Ilmiah Teknik Perminyakan
M. Syaifudin
Program Studi Budidaya Perairan, Fakultas Pertanian, Universitas Sriwijaya
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Physics

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PENYELESAIAN PERSAMAAN SCHRÖDINGER POTENSIAL NON-SENTRAL SCARF HIPERBOLIK PLUS ROSEN-MORSE TRIGONOMETRIK MENGGUNAKAN METODE SUPERSIMETRI MEKANIKA KUANTUM Syaifudin, M.; Suparmi, -; Cari, -
Jurnal Spektra Vol 16, No 2 (2015): Spektra: Jurnal Fisika dan Aplikasinya
Publisher : Jurnal Spektra

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Abstract

AbstrakTujuan dari penelitian ini adalah menyelesaikan persamaan Schrödinger potensial non-sentral Scarf hiperbolik plus Rosen-Morse trigonometrik menggunakan metode Supersimetri Mekanika Kuantum (SUSI MK).Spektrum energi dan fingsi radial diperoleh dari penyelesaian persamaan Schrödinger bagian radial, sedangkan fungsi gelombang bagian sudut dan bilangan kuntum orbital diperoleh dari persamaan Schrödinger bagian sudut polar.Spektrum energi dan bilangan kuantum orbital ditentukan dengan sifat shape invariance.Penentuan fungsi gelombang tingkat dasar bagian radial ditentukan dengan sifat lowering operator dan fungsi gelombang tereksitasi ditentukan dengan sifat raising operator.Baik untuk bagian radial maupun bagian polar ditentukan dengan menggunakan sifat lowering operator dan raising operator. AbstractThe purpose of this research is to solve the Schrödinger equation of non-central potential Scarf hyperbolic plus Rosen-Morse trigonometric method Supersymmetry Quantum Mechanics (SUSY QM). Energy spectrum and radial functions derived from the completion of the radial part of the Schrödinger equation, while the wave functions of the corners and orbital quantum numbers obtained from the Schrödinger equation part of the polar angle. Energy spectrum and orbital quantum number is determined by the nature of the shape invariance. Determination of the wave functions of the radial part of the base rate is determined by the nature of lowering operators and the excited wave function is determined by the nature of the raising operator. Both for the radial and polar parts determined by using the properties of lowering and raising operators.Keywords: Schrödinger equation, the non-central potential Scarf hiperbolic plus Rosen-Morse trigonometric, Supersymmetry Quantum Mechanics
Fin Type Variation of Lionhead Strain Goldfish (Carassius auratus) Offspring Syaifudin, M.; Carman, Odang; Sumantadinata, K.
Jurnal Akuakultur Indonesia Vol. 3 No. 3 (2004): Jurnal Akuakultur Indonesia
Publisher : Indonesian Society of Scientific Aquaculture (ISSA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (361.103 KB) | DOI: 10.19027/jai.3.1-4

Abstract

 Lionhead strain goldfish (Carassius auratus) inheritance produce many variations in phenotype qualitative traits of their offspring that is not common with the parents. Lionhead is an ornamental freshwater fish, they do not have a dorsal fin, but it is a beauty finfish, is popular to the people and have a high economic value. Of the 846 offspring of lionhead is produced in this experiment, and 57,7% of them have dorsal fin (42,3% normal), 13,1% of them have anal fin which did not similar with their parents, 58,6% caudal fin of them did not have similar to their parents. It might be caused by incompletely segregation in meiosis and many gen responsible to certain phenotype trait. Another abnormalities such as no anal fin, blindness, stumped and no pigmen in their gill lamella also occurred. Key words: Inheritance, fin, phenotype, abnormality   ABSTRAK Ikan maskoki strain lionhead menghasilkan keturunan dengan fenotip yang sangat bervariasi dan berbeda dengan induknya. Ikan ini merupakan ikan hias air tawar yang tidak memiliki sirip punggung namun tetap memiliki keindahan, sehingga menjadi begitu populer di masyarakat dan memiliki nilai ekonomi yang tinggi. Sebanyak 846 keturunan (anakan) telah dihasilkan dalam percobaan ini, dan sebanyak 57,7% dari populasi tersebut memiliki sirip punggung (berarti 42,3% merupakan keturunan normal), 13,1% memiliki sirip dubur yang tidak mirip dengan induknya. Variasi keturunan ikan maskoki strain lionhead ini disebabkan oleh segregasi yang tidak sempurna dalam proses meiosis dan banyaknya gen yang terlibat dalam pembentukan penotip tertentu. Abnormalitas lainnya juga terjadi pada keturunan ikan maskoki strain lionhead ini, seperti tidak adanya sirip dubur, mata buta, tubuh pendek dan tidak adanya pigmen pada lemela insang Kata kunci: Keturunan, sirip, fenotip, abnormalitas  
Relation between broodstock number and spawning frequency and egg production of humpback grouper (Cromileptes altivelis) Syaifudin, M.; Aliah, R.S.; Muslim, .; Sumantadinata, K.
Jurnal Akuakultur Indonesia Vol. 6 No. 2 (2007): Jurnal Akuakultur Indonesia
Publisher : Indonesian Society of Scientific Aquaculture (ISSA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.057 KB) | DOI: 10.19027/jai.6.191-196

Abstract

This study was performed to determine spawning frequency, number of ovulated egg and spawning time of humpback grouper (Cromileptes altivelis) broodstock in hatchery.  Broodstock of 20-83 fish in weight of 1.5-2.0 kg were reared in circular concrete tank 225 m3.  The results showed that increasing in number of broodstock increases spawning frequency (R2= 0.694), and ovulated eggs number was also increased (R2= 0.828).  Spawning of humpback grouper can occur in the third to fourth week in every month. Keywords: reproductive biology, spawning, Cromileptes altivelis   ABSTRAK Penelitian ini bertujuan untuk mengetahui frekuensi pemijahan, jumlah telur dan waktu pemijahan populasi induk ikan kerapu tikus (Cromileptes altivelis) di hatchery.  Jumlah induk yang bervariasi antara 20-83 ekor dengan ukuran 1,5-2 kg ditempatkan dalam bak beton bulat, kapasitas 225 m3. Hasil penelitian ini menunjukkan bahwa dengan bertambahnya jumlah induk, maka frekuensi pemijahan yang diperoleh juga semakin meningkat (R2=0,694), dan produksi telur juga semakin meningkat (R2=0,828). Pemijahan kerapu tikus dapat berlangsung setiap bulan, di mana waktu pemijahan terjadi pada kuarter keempat hingga kuarter ketiga. Kata kunci: Biologi reproduksi, Pemijahan, Cromileptes altivelis
Characteristic of the Source Rock Of The Lahat and Talang Akar With Crude Oil In Sarolangun, Jambi sub-basin, Indonesia Alfayed, Muhammad Rus Dody; Siregar, Yusmansyah; Ramadani, Dinda Novia; Syaifudin, M.; Setiawan, Jatmika
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 4 (2025): JGEET Vol 10 No 04 : December (2025)
Publisher : UIR PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jgeet.2025.10.4.17999

Abstract

The research location is situated in Sarolangun, Jambi Province, within the Jambi Sub-Basin. Oil has been produced in the Jambi Sub-Basin study area from Paleogene-Neogene aged source rocks. However, the success ratio of oil discovery in the Jambi Sub-Basin remains at 51%. This study aims to determine the geochemical aspects in characterizing the source rocks and oil. The data used for analysis include total organic carbon, rock pyrolysis, vitrinite reflectance, and biomarkers.Geochemical characterization of the Lahat Formation source rock reveals a kerogen type II-III, generating oil and gas, while the Talang Akar Formation has a kerogen type II, producing oil, and the upper part of the Talang Akar Formation also has a kerogen type II, generating oil. The Lahat Formation biomarker consists of higher plants and algae in anoxic conditions, with high C29 sterane and early mature Tm/Ts ratio. The lower part of the Talang Akar Formation biomarker has lacustrine-marine algae organic material in anoxic conditions, with high C27 sterane and early mature Tm/Ts ratio. The upper part of the Talang Akar Formation biomarker has higher plant and marine algae organic material, with high oleanane and early mature Tm/Ts ratio. The produced oil has biomarker characteristics indicating deposition in anoxic conditions, with a mix of algae-higher plant organic material, and early mature Tm/Ts ratio. Based on these results, the oil is positively correlated with the Talang Akar Formation, indicating that the organic material originates from a marine or lacustrine depositional environment.
EVALUASI BATUAN INDUK FORMASI TALANG AKAR ATAS BERDASARKAN DATA GEOKIMIA DI DESA BUKIT SUBAN, KABUPATEN SAROLANGUN, SUB-CEKUNGAN JAMBI Alfayed, Muhammad Rus Dody; Riyadi, Hasan; Zelandi, Muhammad; Siregar, Yusmansyah; Syaifudin, M.
Petro : Jurnal Ilmiah Teknik Perminyakan Vol. 14 No. 4 (2025): Desember 2025
Publisher : Jurusan Teknik Perminyakan Fakultas Teknologi Kebumian dan Energi Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/petro.v14i4.24537

Abstract

Our oil and gas exploration must be able to understand the concept of the petroleum system. Source rock is one of the most important parameters in the petroleum system that functions as a hydrocarbon producer or source rock, even placing the bedrock as the number one priority that must be present in the petroleum system (Magoon and Dow, 1994). This study aims to determine the potential of parent rocks in the Upper Talang Akar Formation in the research area to produce hydrocarbons. The research method was carried out using surface samples, geochemical analysis of Total Organic Carbon, Rock-Eval Pyrolysis and Vitrinite Reflektance. Based on the results of geochemical analysis research that has been carried out on the source rock of the Upper Talang Akar Formation, the characteristics of the potential of the source rock in producing hydrocarbons have a rich organic material range (1.38 – 4.06), based on TOC data, the sample of the source rock of the Upper Talang Akar Formation has quite good potential. Analysis of organic material types in the study area's source rock samples yielded kerogen types II and III that have the potential to produce oil and gas hydrocarbons. The maturity level analysis is based on Tmax data of the Upper Talang Akar Formation source rock has an immature maturity level and based on Ro data, the upper Talang Akar of the source rock has an immature maturity level. Therefore, it can be concluded that the shale source rock of the Upper Talang Akar Formation in the research area has the potential to produce good to very good hydrocarbons and produce oil and natural gas in the immature phase.
Co-Authors - Suparmi . Muslim Alfayed, Muhammad Rus Dody Cari, Cari Jatmika Setiawan, Jatmika K. Sumantadinata Muhammad Zelandi Odang Carman R.S. Aliah Ramadani, Dinda Novia Riyadi, Hasan Siregar, Yusmansyah