Judul: Pemodelan Nilai Tukar Mata Uang Rupiah terhadap Dollar dengan Interpretasi Kuantum Termodifikasi Bohmian Menggunakan Metode Finite Difference
Abstrak: Interpretasi kuantum Bohmian dapat digunakan dalam menyelesaikan permasalahan ekonomi, salah satunya prediksi kurs. Interpretasi ini perlu dimodifikasi untuk menyesuaikan dengan parameter-parameter ekonomi yang diasumsikan pada penelitian ini, antara lain suku bunga, inflasi, Pendapatan Domestik Bruto (PDB), dan selisih neraca perdagangan dari masing-masing negara, yaitu Indonesia dan Amerika Serikat. Parameter-parameter tersebut diasumsikan ke dalam masing-masing variabel yang terdapat pada interpretasi kuantum Bohmian yang telah dimodifikasi, antara lain �������, �������, �������, �������, �������, �������, dan ℎ. Solusi persamaan ini diselesaikan menggunakan metode finite difference eksplisit. Data aktual yang digunakan merupakan data kurs rupiah Indonesia (IDR) terhadap dollar Amerika (USD) selama lima periode. Hasil data prediksi ini meenghasilkan persentase ratarata ketepatan selama lima periode sebesar 99.7280 %.
Keyword: Bohmian, dollar, rupiah

Judul: Prediksi Perubahan Nilai Tukar Mata Uang Rupiah Terhadap Dolar Menggunakan Model Osilator Anharmonik Kuantum
Abstrak: Perubahan nilai tukar mata uang yang berfluktuasi dapat menjadi peluang investasi yang menguntungkan, bergantung pada kemampuan kita memprediksi pergerakannya. Dalam penelitian ini kami menggunakan pemodelan osilator anharmonik kuantum dilengkapi dengan metode beda hingga untuk memprediksi parameter ekonomi pada pasar valuta asing. Parameter-parameter tersebut antara lain, kemampuan market makers mengendalikan pasar ( ), perilaku contrarians dan trend followers terhadap pasar ( ), risk aversion effect ( ), dan nilai kekuatan pasar ( ). Hasil yang diperoleh menunjukkan perbandingan antara nilai price return hasil simulasi dan data aktual yang cukup baik yaitu dengan nilai koefisien determinasi ( ) diatas 0.80. Penggunaan metode exponential smoothing untuk memprediksi price return berdasarkan nilai parameter dari simulasi osilator anharmonik kuantum juga menghasilkan nilai koefisien determinasi ( ) yang cukup baik yaitu 0.73.
Keyword: Exponential smoothing, Finite Diffference, Osilator Anharmonik Kuantum, Pasar Valuta Asing, Price Return

Judul: Excretory/secretory antigen of ascaridia galli L3 stage to trigger yolk immunoglobulin in laying hens
Abstrak: Ascaridiosis caused by the nematode Ascaridia galli. A study was carried out to characterize excretory/secretory antigen of A. galli from larval stage to trigger anti-ascaridiosis yolk immunoglobulin in laying hens. A. galli L3 were recovered from intestines of 100 heads chickens 7 days after oesophagus inoculation with 6000 L2. L3 recovered in this manner were cultured (5 – 10 ml-1) in flasks containing rosswell park memorial institute (RPMI) 1640 media, pH 6.8, without phenol red. Cultures were incubated at 370C in 5% CO2 and culture fluid was collected after 3 days in culture. To prepare excretory/secretory antigen, culture medium were concentrated with vivaspin 30.000 MWCO, and antigen protein concentration were counted as described in Bradford method. The molecular weight of excretory/secretory antigen was determined with sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS PAGE). Active immunizations were applied intra muscularly of chickens with an initial dose of 80 μg. The immunizations were repeated three times with dose of each 60 μg with an interval of one week. The first immunizations were excretory/secretory antigen mixed with fruend adjuvant complete and subsequently mixed with freund adjuvant incomplete. The chicken’s eggs were collected from 49 day after immunizations. Anti-ascaridiosis yolk immunoglobulin (IgY) was extracted from egg yolks by means of ammonium sulphate and purified using fast performance liquid chromatography (FPLC). The purity of anti-ascaridiosis IgY was determined by Bradford method (λ = 280 nm). Antibody was detected by agar gel precipitation test (AGPT) and enzyme linked immunosorbant assay (ELISA). Antigen were detected with immunohistochemistry. Chickens were challanged with dose of 1000 L2 A. galli. Passive immunizations were applied ten times with dose of each 0,875 mg IgY with an interval of one day intra orally. IgY anti-ascaridiosis was tested against A. galli survival in vitro.
Keyword: Unggas, Isolasi dan karakterisasi antigen, Purifikasi imunoglobulin yolk, Pengukuran antibodi ayam petelur, Metode Imunohistokimia, Ascaridiosis