Judul: pengaruh persepsi ayah tentang pendidikan menengah dan kesejahteraan keluarga terhadap investasi pendidikan anak pada keluarga tkw
Abstrak: This study aims to analyze the level of subjective well-being of father and factors that influence it, identify father perceptions about secondary education, identify money investment and time investment for the child's on the migrant worker family, and analyze the influence of subjective well-being of father and the father's perception of secondary education to child investment. The sample of this study is migrant workers family who have children with age 12-14 years old. There are 60 families that were selected purposively. The level of subjective wellbeing of father, father perception about secondary education are moderate category. Money investment are low category. Allocation of children's education cost is about 12,57 percent or Rp 243.700 per month. The time Investment of father for the child is low. The results showed that the mother's income, living conditions, and the togetherness of fathers and the children will increase subjective well-being of father. Father’s education and mother's revenue will increase educational facilities and the cost allocation of children's education. Subjective well-being of fahter that good will increase the awareness of the father's to spend the time with the children.
Keyword: Bogor Agricultural University (IPB), perception education, subjective well-being, human investment

Judul: Pengaruh Kesejahteraan Keluarga terhadap Investasi Anak pada Keluarga Petani
Abstrak: Child investment will determine how the quality of children and family welfare in the future. This study is aimed to investigation welfare, money investment, and time investment for children in farmer families and the influencing factors. The study was performed in 100 randomly selected families, whose primary school children with age 6-12 years. The results showed that based on the objective welfare, the farmer families could not be categorized as poor families. Education and health facilities for primary school children are in the middle category. Education expending proportion for primary school children 7.14 percent dan health expending 0.51 percent. On average, the mothers and fathers, respectively, spend 2 hours 3 minutes and 1 hour 29 minutes per day on children care. Logistic regression results showed that the increase of the family size would reduce the family welfare. Furthermore, the results of multiple linear regression revealed that age child increase, long mothers education, price asset increase, and objective welfare would increase spending for money investment. In addition, increasing child age and the objective welfare tend to reduce the time investment. However, we found that longer mothers education will increase the time investment in children.
Keyword: time investment, objective welfare, money investment

Judul: Pemurnian dan karakterisasi protein inhibitor RNA helikase virus hepatitis C
Abstrak: Hepatitis C virus (HCV) infection is the second most common chronic viral infection in the world with global prevalence. This infection is contribution to chronic hepatitis and liver cirrhosis, often leading to hepatocellular carcinoma. There is no effective drug and vaccine available against HCV. The current standard treatment, a combination of pegylated interferon-α with ribavirin, is limited by its suboptimal response rate in a significant patient population, side effects, and affordability. Therefore, development of effective drug is needed. One approach to find out the candidate of antiviral drug is to discover the inhibitor of enzyme that essential for virus replication, such as RNA helicase. Streptomyces chartreusis 5-095 produce the inhibitor of HCV RNA helicase. The aim of this study was to purify the protein inhibitor which has inhibition activity against ATPase activity of RNA helicase HCV from S. chartreusis 5-095. The supernatant of culture S. chartreusis 5-095 exhibited high inhibiton activity against ATPase activity of RNA helicase HCV (approximately 72%) at 10 days of incubation. The extracellular protein inhibitor was partially purified by procedures of precipitation with ammonium sulfate to 65% saturation and gel filtration (Sephadex G50) using methanol water solution (4:6) as an eluen. The purity of protein inhibitor was monitored by SDS PAGE. The protein inhibitor showed a relative molecular mass were estimated to be 14 kDa and increased the purity 23,08 fold than those of the crude protein. The specific activity and IC50 after purification were 13,1338 U/mg and 0,0767 mg/mL, respectively. The activity of purified protein inhibitor showed its stability over pH range from 5-8 and optimum at pH 7,4. The inhibition activity showed its stability up to 70% at temperature 100 oC. The purified protein inhibitor relatively stable its activity at storage in the range of -20 oC to room temperature for 35 days.
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