Judul: Addition of Bandotan Leaf Extract (Ageratum conyzoides) to Closed System Transportation of Padang Strain Gourami (Osphronemus goramy)
Abstrak: Kegiatan transportasi ikan hidup pada kegiatan budidaya penting untuk diperhatikan karena berkaitan erat dengan kondisi ikan saat transportasi dan pasca transportasi, sehingga berakibat pada meningkatnya biaya pemeliharaan. Penelitian ini bertujuan menganalisis pengaruh penambahan ekstrak daun bandotan (Ageratum conyzoides) pada transportasi sistem tertutup ikan gurami strain padang (Osphronemus goramy) yang ditransportasikan selama 48 jam terhadap kualitas air, kelulushidupan, respon stres, pertumbuhan ikan pasca transportasi, dan analisis keuntungan. Rancangan penelitian yang digunakan yaitu rancangan acak lengkap (RAL) dengan 4 perlakuan dan 3 ulangan. Perlakuan terdiri dari kontrol dengan kode G1, penambahan esktrak sebanyak 0,2 ml L-1 dengan kode G2, penambahan ekstrak sebanyak 0,4 ml L-1 dengan kode G3, penambahan ekstrak sebanyak 0,6 ml L-1 dengan kode G4. Parameter yang diukur pada penelitian ini yaitu tingkat kelangsungan hidup (TKH), laju pertumbuhan harian (LPH), laju pertumbuhan spesifik (LPS), rasio konversi pakan (RKP), parameter kualitas air (fisika dan kimia), parameter respon stres ikan (kadar hemoglobin, kadar glukosa darah, kadar kolesterol, pH darah, pH daging, tingkat konsumsi oksigen, dan histologi insang. Hasil uji statisik ANOVA menunjukkan penambahan ekstrak daun bandotan terhadap media air transportasi, dan tingkat kelangsungan hidup berbeda nyata (P<0,05). Penambahan ekstrak dengan dosis 0,4 ml L-1 pada media air transportasi yang berisi ikan gurami padang dengan panjang tubuh rata 10,24±0,30 cm dan bobot rata-rata 16,50±0,19 g meningkatkan kelulushidupan sebesar 100% dibanding tanpa penambahan ekstrak dan memiliki nilai keuntungan paling tinggi dibanding perlakuan lainnya., Live fish transportation activities in aquaculture activities are important to consider because they are closely related to the condition of the fish during transportation and post-transportation, resulting in increased maintenance costs. This study aims to analyze the effect of the addition of bandotan leaf extract (Ageratum conyzoides) in closed system transportation of padang strain gourami (Osphronemus goramy) transported for 48 hours on water quality, survival, stress response, post-transport fish growth, and profit analysis. The research design used was a complete randomized design (CRD) with 4 treatments and 3 replicates. The treatments consisted of control with code G1, the addition of extract as much as 0.2 ml L-1 with code G2, the addition of extract as much as 0.4 ml L-1 with code G3, the addition of extract as much as 0.6 ml L-1 with code G4. Parameters measured in this study were survival rate (SR), daily growth rate (ADG), specific growth rate (SGR), feed conversion ratio (FCR), water quality parameters (physical and chemical), fish stress response parameters (hemoglobin levels, blood glucose levels, cholesterol levels, blood pH, meat pH, oxygen consumption rate, and gill histology. The results of ANOVA static test showed the addition of bandotan leaf extract to the transportation water media, and the survival rate was significantly different (P<0,05). The addition of the extract at a dose of 0.4 ml L-1 to the transportation water medium containing Padang gourami with an average body length of 10.24 ± 0.30 cm and an average weight of 16.50 ± 0.19 g increased the survival rate by 100% compared to without the addition of the extract and had the highest profit value compared to other treatments.
Keyword: bandotan leaves, fish transportation, padang gourami

Judul: Addition of Whiteweed (Ageratum conyzoides) to Improve Water Quality Media and Survival Juvenile Patin Fish (Pangasionodon hypopthalmus) in a Closed Transportation System
Abstrak: Produksi ikan patin (Pangasionodon hypopthalmus) di beberapa daerah belum optimal, diperlukan kegiatan transportasi ikan dalam rangka meningkatkan produksi patin di berbagai daerah. Daun bandotan (Ageratum conyzoides) diketahui memiliki kegunaan dalam transportasi ikan. Tujuan penelitian ini adalah menganalisis penambahan daun bandotan terhadap peningkatan kualitas air media dan sintasan juvenil ikan patin pada transportasi tertutup. Penelitian ini menggunakan rancangan acak lengkap terdiri atas tiga perlakuan dan tiga ulangan. Perlakuan terdiri dari kontrol (K), perlakuan dosis 1 g/L (B1), dan perlakuan dosis 2 g/L (B2). Hasil penelitian menunjukkan penambahan daun bandotan tidak berpengaruh nyata terhadap kualitas air dan sintasan namun dapat menurunkan konsentrasi glukosa darah ikan pada saat transportasi. Penambahan daun bandotan 1 g/L memiliki keuntungan ekonomi yang paling besar. Berdasarkan penelitian ini, dosis terbaik dalam penambahan daun bandotan pada media transportasi yaitu 1 g/L., Production of Asian catfish (Pangasionodon hypopthalmus) in some areas is not optimal, fish transportation activities are needed in order to increase catfish production in various regions.. Whiteweed (Ageratum conyzoides) are known to have been benefits in fish transportation. The purpose of this study was to analyze the addition of whiteweed to the improvement of water quality media and juvenile survival of catfish in closed transportation. This study used a completely randomized design consisting of three treatments and three replications. The treatments consisted of control (K), treatment dose 1 g/L (B1), and treatment dose 2 g/L (B2). The results showed that the addition of whiteweed did not significantly affect the survival rate and water quality but could reduce the blood glucose concentration of fish during transportation. The addition of 1 g/L whiteweed has the greatest economic advantage. Based on this research, the best dose for adding whiteweed to transportation media is 1 g/L.
Keyword: Ageratum conyzoides, Pangasionodon hypopthalmus,, Survival, Transportation, Water quality

Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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