Judul: Aplikasi Konsorsium Mikroorganisme untuk Mendegradasi Lignin dalam Limbah Cair Pabrik Kelapa Sawit pada Kondisi Aerobik
Abstrak: The microorganism consortia from eight different ponds of palm oil mill effluents (POME) at Palm Oil Mills (POM) of PT Condong Garut and Rejosari- Lampung were selected and applied to degrade lignin of lignosellulosic materials in POME under an aerobic condition. They were aerated to ensure effective isolation of aerobic microorganisms. Selection of lignin-degrading fungi consortia were determined by using selected agar plate (LAC) and liquid Lignin Chloramphenicol (LC) medium. Their ability to degrade lignin of lignocellulose materials in POME were shown by absorbance value and total solids in broth culture. Microorganism consortia from Anaerobic-4 at POM of Condong Garut had the high growth rate in liquid LC medium. These result was also confirmed by their consortia’s ability had the highest degrade of lignin materials in POME compared with the others selected consortia.
Keyword: aerobic, microorganisms consortia, lignin, POME

Judul: Permukaan Respon Pengaruh Agitasi dan Lama degradasi Lignin Limbah Cair Pabrik Kelapa Sawit oleh Konsorsium Kapang Secara Aerobik
Abstrak: The response surface of the cultivation time and agitation rate on lignin degradation in the palm oil mill effluent (POME) were investigated. The effect of agitation rate was measured at range 100-150 rpm. Meanwhile, the effect the cultivation time was analyzed in range of two to six days. The influences of factors were analyzed using center point design . However, surface response relationship between both factors on lignin degradation was determined by using central composite design (CCD). As a result, the agitation rate was significantly (93.53%) reduced the lignin degradation. The surface response of cutivation time and agitation rate effect was a saddle point with Y= -0.17131 + 0.006315X1 - 0.021844X2 - 0.000032X12 + 0.000068X1X2 + 0.001474X22.
Keyword: cultivation time., agitation, consortia, aerobic, delignification, Palm Oil Mill Effluent

Judul: Analisis Fase: Vector Error Correction Model  Bitcoin pada Fase Dominasi (BTC.D) dengan Pergerakan Altscoin
Abstrak: Bitcoin telah mendominasi pasar cryptocurrency, menunjukkan bahwa pergerakan harga alternatif cryptocurrency (Altscoin) sangat bergantung pada pergerakan Bitcoin. Analisis fase dilakukan pada tiga fase, yakni fase tinggi, sedang, dan rendah. Altscoin pada penelitian ini terdiri dari: Ethereum, BNB, XRP, dan ADA. Tujuan penelitian ini adalah untuk melihat pengaruh pergerakan BTC dengan Altscoin pada fase dominasi tinggi, dominasi sedang, dan dominasi rendah menggunakan metode Vector Error Correction Model. Pada fase tinggi dalam jangka panjang, adanya penurunan yang signifikan dari ADA serta tidak signifikan dari lnBNB dan XRP. Pada jangka pendek, adanya penurunan pada lnETH, dimana pada fase tinggi Cryptotrader menyukai Bitcoin sehingga rata-rata harga Altscoin menurun. Pada fase sedang baik jangka panjang maupun pendek, tidak ada kecenderungan pengarahan tren pergerakan dikarenakan fase transisi. Pada fase rendah baik jangka panjang maupun pendek, adanya penurunan pada Bitcoin yang menandakan fase distribusi Bitcoin dan buying position Altscoin sedang dimulai. Hasil peramalan lnBTC pada fase tinggi mencapai nilai USD 9,03 dengan penurunan -1,02%, pada fase sedang mencapai nilai 9,89 dengan kenaikan +0,07%, pada fase rendah mencapai nilai 10,4 dengan penurunan -0,38%.
Keyword: Altscoin, Bitcoin, Vector Error Correction Model