Judul: Jangka Reproduksi Wanita di Suku Semendo, Sumatera Selatan.
Abstrak: Fase pubertas merupakan fase transisi dari masa anak-anak menuju dewasa. Siklus pertama menstruasi atau menarche digunakan untuk menentukan waktu pubertas seorang wanita. Menstruasi merupakan pendarahan normal dari bagian vagina yang terjadi sebagai bagian dari siklus bulanan wanita. Menopause atau tidak mengalami menstruasi selama 12 bulan mengindikasikan fase akhir reproduksi. Menarche dan menopause merupakan dua komponen penting dalam sistem reproduksi wanita. Penelitian sebelumnya melaporkan bahwa adanya variasi usia menarche dan menopause pada wanita di yang tinggal di daerah pedesaan dan perkotaan. Semendo merupakan salah satu populasi yang tinggal di daerah pedesaan Sumatera Selatan, Indonesia. Metode status quo dan recall digunakan untuk menentukan usia saat menarche dan usia saat menopause. Semua data dianalisis menggunakan metode Probit Generalized Linear Models yang diimplementasikan dalam program R. Jangka reproduksi wanita di Suku Semendo yaitu 33.0 tahun. Jangka reproduksi ditentukan berdasarkan usia saat menarche dan usia saat menopause. Rata-rata usia saat menarche di Suku Semendo yaitu 13.8 tahun. Sedangkan rata-rata usia saat menopause yaitu 46.8 tahun.
Keyword: menarche, menopause, reproduksi

Judul: Jangka Reproduksi Wanita Suku Baduy, Kabupaten Lebak, Provinsi Banten
Abstrak: Humans grow and develop into a child, adolescent, adult, and aging. Condition who switch from the children phase to teen or young adult phase is called puberty. First menstruation (menarche) in women marking the occurrence of puberty. The women reproductive phase begin with menarche and end at the time of menopause. Menopause is a condition which there is no ovulation and the menstrual cycle. The lead time from puberty until menopause is called the reproductive period of women. Knowing the reproductive period of women is very close with to the nature of women to become pregnant. Baduy tribe was chosen as the comparative with previous studies. Due to, they live outside of alienating themselves from society, the marriage happens his fellow man, not getting an education, and still maintain customs. This study used longitudinal method, the status quo method, and memory method. Data was collected from interviews. The data was processed using the Probit GLM (Generalized Linear Models) in R program. The result showed that menopausal age was 48.64 years, menarche age was 14.97 years (year 1976). The reproductive period was limited by the age of menarche and menopause obtained for 33.67 years.
Keyword: 

Judul: Sintesis dan uji aktivitas katalitik Fe3O4 dari campuran limbah wire plating sludge dan FeSO4 pada efisiensi pembakaran batu bara
Abstrak: Combustion catalyst is an additive added to the fuel to increase the heat energy released. Fe3O4 was the combustion catalyst used in this study, synthesized from PT Sumiden Cibinong wire plating sludge waste by coprecipitation between FeCl3 from wire plating sludge and FeSO4. Synthetic Fe3O4 was characterized by using Faurier transform infrared spectrophotometer, X-ray diffractometer, and atomic absorption spectrophotometer. The Fe2O3, Fe2O3+Fe3O4, and Fe3O4 catalysts were dispersed separately with oil, surfactant, and water. The catalyst mixed into coal having 4596 cal/g calorific value, with overall concentration of catalyst mixture in the coal was 0.01%(w/w). The combustion activity resulted by differential thermal analyzer showed an increase of combustion fficiency of 91.0% with Fe2O3 catalist, whereas addition of Fe3O4 catalyst decreased the efficiency of 55.6%.
Keyword: catalyst, coal, Fe3O4, wire plating sludge.