Judul: Karakterisasi Sifat Adsorpsi Surfaktan Metil Ester Sulfonat (MES) dan Surfaktan Sodium Dodesil Sulfat (SDS) pada Core Sintetik
Abstrak: Adsorption of surfactants on the synthetic core is one of the methods for optimizing the production of petroleum. This study aimed to assess the characteristics of surfactant adsorption, methyl ester sulfonate (MES) and sodium dodecyl sulfate (SDS), on the synthetic core. The results of dimensional measurements, synthetic core had an average porosity of 30-35%, and average permeability 45,9-50,4 mD. Based on the result of treatment on the effect of synthetic core weight to the surfactant adsorption concentration, it shown that saturation point with highest MES surfactant concentration difference in dilution and core occured on treatment of 4 g/ml synthetic core with 7.16 mg/g value (on 80 times dilution) and 3.5 g/ml with 7.18 mg/g value (on 100 times dilution). On SDS sufactant, it shown the synthetic core weight treatment of 2.5 g /ml (on 50 and 100 times dilution) is the saturation point of SDS surfactant adsorption On the treatment of MES concentration variety level to the concentration of MES surfactant adsorption, the result shown the higher MES concentration which was used gave higher surfactant adsorption level on synthetic core of 0.4% MES concentration reached saturation point. On SDS sufactant, based on the effect of SDS concentration variety level to the concentration of SDS surfactant adsorption, the results shown of 0.3% at the saturation pointthe surfactant SDS adsorbed to the synthetic core Results of analysis of the characteristics of pH show a rise of pH in MES and SDS surfactant after adsorption test on treatment in differences weight of core synthetic and surfactant concentration. The results of color analysis after adsorption of the surfactant in the treatment in differences weight of core synthetic and surfactant concentratios showed the decreasing Klett value.
Keyword: 

Judul: Preparation and Characterization Methyl Ester Sulfonate (MES) from Olein Methyl Ester.
Abstrak: Peningkatan nilai tambah minyak sawit selain menjadi metil ester oleat juga dapat melalui pembentukan metil ester sulfonat (surfaktan). Surfaktan merupakan zat aktif permukaan yang dapat menurunkan tegangan antarmuka antara dua bahan baik berupa cairan-cairan, cairan-padatan, atau cairan-gas. Metil ester sulfonat (MES) adalah salah satu jenis surfaktan anionik, muatan negatif pada gugus hidrofiliknya bersifat aktif permukaan. MES dibuat melalui proses sulfonasi menggunakan gas SO3 dalam reaktor film turun tabung tunggal (STFR), yang dilakukan pada suhu 80 °C dengan selang waktu 60 sampai 360 menit. Hasil penelitian menunjukkan lama proses 360 menit dengan netralisasi merupakan perlakuan terbaik dengan nilai tegangan antarmuka sebesar 7.7 × 10-3 dyne/cm, rerata kandungan bahan aktif dan bilangan asam sebesar 10.8770% dan 0.1889 mg KOH/g MES, bilangan iodin 27.4687 mg I2/g MES, densitas 0.98619 g/mL.
Keyword: 

Judul: Etno-ornitologi Burung Kancilan Flores (Pachycephala nudigula nudigula Hartert 1897) pada Masyarakat Lio di Taman Nasional Kelimutu
Abstrak: Bare-throathed whistler is one of several wild birds in Kelimutu National Park (TNKL) that is believed to have correlation with Lio Community‟s belief. The estimation of Bare-throated whistler‟s population in Kelimutu National Park was about 186.41-1668.07 individual by the density about 0.0389-0.3481 ind/ha with the sex ratio 6.2:1 that spreaded on area with height of 1100 – 1600 masl. The characteristic of Bare-throated whistler‟s habitat is a natural forest with various canopy level, high plant species diversity and high density. The habitat characteristics related to the availability of food in the form of insects, cover, safety and a nesting site. Generally the most of Lio community knew the existence of Bare-throated whistler directly or from their parents‟ stories. The perceptions of Lio Community to the Bare-throated whistler‟s existence is generally support the conservation efforts. The perceptions construct the Lio Community‟s atitude that tend to be conservative to the existence of Bare-throated whistler. The attitude shown by their behavior that not cathing the Bare-throated whistler from the TNKL‟s area or the outside. The attitude have an important role to the existence of Bare-throated whistler in Kelimutu National Park‟s area.
Keyword: