Judul: Alternatif cara deteksi kandungan iodium pada garam beriodium yang beredar di pasaran
Abstrak: Program penanggulangan dan pencegahan GAKI (Gangguan Akibat Kurang Iodium) dengan cara iodisasi garam masih mengalami beberapa hambatan yaitu banyak dijumpai garam iodium yang tidak memenuhi syarat. Ada keterbatasan pemerintah dalam pengawasan mutu gaгаm, maka usaha untuk mengerahkan partisipasi masyarakat untuk membantu pemerintah dalam pemantauan mutu garam di daerahnya adalah penting. Keikutsertaan masyarakat tersebut dengan cara menguji garam yang beredar dan menghindari membeli garam yang tidak beriodium. Oleh karenanya harus dicarikan cara yang mudah. dan sederhana menggunakan bahan yang ada pada masyarakat. Penelitian ini bertujuan mencari alternatif cara deteksi iodium pada garam beriodium yang dapat dilakukan oleh masyarakat. Penelitian berlangsung mulai bulan Juni 1990 sampai dengan bulan Agustus 1990, yang dibagi 2 tahap penelitian yaitu penelitian pendahuluan dan penelitian lanjutan. Pada penelitian pendahuluan dilakukan pengujian terhadap beberapa formulasi menggunakan bahan gadung, singkong dan biji karet yang di campur garam iodium dan asam cuka atau asam sitrat.
Keyword: garam iodium

Judul: Mempelajari kandungan iodium pada juice rumput laut (Euchema cottonii) sebagai alternatif penanggulangan GAKI (gangguan akibat kurang iodium)
Abstrak: Tujuan penelitian ini adalah untuk mempelajari kandungan iodium pada juice rumput laut (Buchema cottonii) sebagai alternatif penanggulangan GAKI (Gangguan Akibat Kurang Iodium). Penelitian dilakukan di Laboratorium Pengolahan Pangan dan Kimia Gizi Jurusan Gizi Masyarakat dan Sumberdaya Keluarga, Fakultas Pertanian, dan Laboratorium Kimia PAU IPB, dari bulan Juli 1995 sampai Januari 1996. Penelitian dila- kukan dua tahap yaitu penelitian pendahuluan untuk menentukan perbandingan rumput laut dengan air dan konsentrasi gula dan penelitian lanjutan. Analisis kimia dilakukan pada rumput laut segar meliputi analisis proksimat dan kadar iodium serta pada juice rumput laut meliputi analisis iodium, pH, total asam, kadar gula dan total padatan terlarut dan analsis proksimat pada juice rumput laut yang terbaik. Uji organoleptik juice rumput laut meliputi warna, aroma, rasa, kekentalan dan penampakan keseluruhan. Perlakuan perbandingan rumput laut dengan air dilakukan pada 1:5, 1:6, dan 1:7, sedangkan perla- kuan penambahan gula dilakukan pada tingkat 15%, 20% dan 25%,
Keyword: rumput laut

Judul: Thermal Characteristics and Dynamics of Tropical Cyclone over Western North Pacific Ocean: A Case Study of Typhoon Songda (Chedeng) 2011
Abstrak: The frequent occasion of Tropical Cyclone (TC) over Western North Pacific (WNP) Ocean lies from 10˚N to 26˚N and 121˚E to 170˚E. Sources of TC development come from warm ocean temperature where latent heat is released during condensation processes and subsequently concentrated in the boundary layer. Relative humidity at 850-700 hPa is responsible to produce the most intense storm. Meanwhile, weak vertical wind shear between 850-200 hPa is one of the dynamical factors that lead to the development of TC. Pressure level of 850-200 hPa is chosen to minimize the thermodynamic effect in the lower troposphere. Typhoon Songda (Chedeng in the Philippines) or TSC lasted from May 18th to 30th, 2011 and strengthened into powerful Super Typhoon stage between May 24th and 27th. Long curving track and the exhibition of all sequences of TC life cycle, TSC is then considered as an ideal case of TC. The objective of the study with case of TSC is to investigate the role of thermal characteristics and dynamics on TC intensity. The research is carried out by using Advanced Research of Weather Research and Forecasting model (WRF ARW model) version 3.3. Two domains are employed in the model. The first domain situate from 02˚N to 40˚N and 118˚E to 149˚E and cover spatial resolution () of 33.1 km. The second domain situate from 09˚N to 27˚N and 119˚E to 132˚E with of 11 km. Timestep of the model () is 120 seconds. The model is supported by the following physical parameterization, i.e., Yonsei University Scheme (YSU) in the boundary layer, Kain-Fritsch scheme (KF) in the cumulus, and WRF Single-Moment 3-class scheme in the microphysics. Initial meteorological condition prior to the formation of the cyclone is generated using WRF ARW standard-release model. Sensitivity of the model output is obtained from a selected single-parameter change scenarios, namely, 10 % to 20 % decrease and increase of wind shear initial data at 850-200 hPa, and by 10 % to 20 % decrease of relative humidity initial data at 850-700 hPa. The result showed that the negative correlations between wind shear and intensity are found in wind shear scenarios. Wind shears of 10 ms-1 which lead to strengthening of the wind intensity in the early period of Typhoon development are found in wind shear scenarios. The effect of wind shear changes on wind intensity is statistically significant in the 20 % wind shear scenarios. During mature stage, weak wind intensity occurred when wind shear increase as given in the WRF standard-release and the 20 % decreasing scenario. Different situation is found in the 20 % increasing scenario where wind shear tend to weak and lead to strong wind intensity at this stage. Meanwhile, the reduction of moisture supply at 850-700 hPa resulting from 20 % decreasing relative humidity play a major role in the weakening of wind intensity and reduces mechanical energy of the cycle process as much as 300 J kg-1.
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