Judul: Correlation among Energy and Nutrients Intake and Socioeconomic Status with Obesity of IPB employees.
Abstrak: Today, obesity has become a health and nutrition problems of the world, both in developed and developing countries. The purpose of this study was to analyze interrelated between energy and nutrients intake and socioeconomic condition with obesity status of IPB employees. Design of this study was cross sectional. The sample size of this study was 73, and have been choosen purposively. Data was collected by interview using questionnaire and measurement of body weight and height in order to get nutritional status of the samples. Correlation rank Spearman, and Pearson was used to analyze interrelated between two variables, and independent t-test was used to analyze differences between nutritional status. The result showed that there were a significant difference (p<0.05) on gender, level of education, and nutrition knowledge between the samples of normal nutritional status and obesity. There were significant and positive correlation between education level and the energy and carbohydrate intake; income of family with vitamin A and vitamin C intake; knowledge of nutrition with the intake of protein, fruit consumption habits and nutritional status. But, there was a significant and negative correlation between exercise habits with the fat intake.
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Judul: Gaya Hidup, Intake Zat Gizi Dan Morbiditas Orang Dewasa Yang Berstatus Gizi Obes Dan Normal
Abstrak: The objective of this research was to identify characteristic of samples, food intake, lifestyle, morbidity and energy balance among adult obese and normal nutritional status. A cross-sectional study was conducted from October to November 2010 in Bogor Agricultural University (BAU). The study participants were employee’s rector of BAU. The samples were chosen purposively with criteria were adult category, age >21 years, male and female gender, body mass index (BMI) >27.0 for obese nutritional status; BMI 18.5-25.0 for normal nutritional status, and ready for being sample of research. The number of obese sample were 25 and normal sample 25 people. Majority (72%) of obese samples were 30-49 years old. There was a significant difference in education levels of among samples (p<0.05). Rice, cassava, street food and soft drink consumption were found higher in obese than normal samples. Statistical analysis showed that there was a significant difference in obese and normal samples in protein intakes and adequacy level of protein (p<0.05). There was a significant difference in leisure-time between obese and normal samples (p<0.05). Ready-to-eat food habit was found higher in obese than normal status. The average of energy balance among samples were negative. In addition, there was a significant difference in family history of obesity between obese and normal samples (p<0.05). For the last three month, both subjects suffer from infections of acute respiratory. Diabetes mellitus and uric acid was found in obese subjects, while anemia was found in normal subjects The study showed that nutritional status was positively correlated with age, education levels, frequency of cassava consumption, family history of obesity and ready-to-eat food habit and negatively associated with intakes of protein.
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Judul: Sintesis nanopartikel Cu2ZnSnS4 menggunakan teknik hidrotermal
Abstrak: Nanopartikel Cu2ZnSnS4 (CZTS) merupakan semikonduktor yang berpotensi sebagai fotokatalis untuk reaksi fotodegradasi zat pewarna. Semikonduktor ini memiliki sela pita yang jauh lebih kecil dibandingkan dengan semikonduktor TiO2, sehingga memungkinkan dapat berkerja hanya dengan paparan sinar matahari. Nanopartikel Cu2ZnSnS4 telah berhasil disintesis menggunakan teknik hidrotermal dengan suhu 200 oC selama 24 jam. Larutan Cu2ZnSnS4 dinetralkan menggunakan amonium hidroksida dan dialiri gas N2 sebelum proses hidrotermal. Hasil analisis mikroskop elektron pemayaran menunjukkan nanopartikel Cu2ZnSnS4 mengalami aglomerasi karena memiliki ukuran partikel yang besar. Hasil analisis difraktogram sinar-X menunjukkan bahwa Cu2ZnSnS4 yang dihasilkan memiliki struktur kesterit dengan senyawa fase sekunder yang terbentuk adalah CuS, ZnS, dan Cu2SnS3. Hasil uji fotodegradasi menunjukkan bahwa senyawa hasil sintesis memiliki kemampuan degradasi dibawah sinar matahari lebih baik dibandingkan dengan TiO2. Namun, pada paparan sinar UV, TiO2 mendegradasi biru metilena lebih baik daripada senyawa hasil sintesis. Kapasitas adsorbsi terhadap biru metilena sebesar 2.6780 mg/g menunjukkan bahwa senyawa hasil sintesis tidak mampu mengadsorpsi dengan baik, sehingga disimpulkan bahwa hilangnya biru metilena dari larutan disebabkan oleh fotodegradasi, bukan oleh adsorpsi
Keyword: band gap, Cu2ZnSnS4, kesterite, photocatalyst, semiconductor