Judul: Formulasi Sabun Cair Wajah dengan Penambahan Bahan Aktif  Kolagen Ikan dan Tea Tree Oil
Abstrak: Produk yang dapat membersihkan permukaan kulit wajah dari kotoran, minyak, dan melindungi kulit dari infeksi bakteri yaitu sabun cair wajah. Bahan baku yang digunakan dalam sabun cair wajah yaitu surfaktan. Penambahan bahan aktif sabun cair wajah seperti kolagen ikan dan tea tree oil bermanfaat untuk meningkatkan elastisitas kulit dan memiliki kandungan antibakteri untuk kulit. Penelitian bertujuan menghasilkan formulasi sabun cair wajah terbaik dengan dua faktor serta tiga taraf, faktor pertama adalah persentase penambahan tea tree oil dengan taraf (0,5%; 0,7%; dan 0,9%) dan faktor kedua adalah persentase penambahan kolagen ikan (3%; 4%; dan 5%). Data formulasi produk sabun cair wajah terbaik diperoleh dengan analisis ANOVA two way dengan taraf kepercayaan 95%, kemudian dilanjutkan dengan Duncan Multiple Range Test (DMRT) dengan taraf nyata 5%. Didapatkan formulasi terbaik dengan perlakuan A.X (kolagen 3% dan tea tree oil 0,5%). Hasil analisis yang dilakukan mendasari pemilihan formulasi terbaik untuk sediaan sabun cair dengan penambahan kolagen ikan sebesar 3% dan tea tree oil sebesar 0,5%. Hasil sediaan sabun cair wajah A.X tersebut telah sesuai SNI 4085:2017 dengan nilai pH sebesar 7,97, kadar asam lemak bebas 0,59 % dan viskositas 966,67 cP, sedangkan total bahan aktif 3,97 % belum memenuhi SNI 4085:2017., Products that can clean the surface of the facial skin from dirt, oil, and protect the skin from bacterial infections, namely facial liquid soap. The raw material used in facial liquid soap is surfactant. The addition of active facial soap ingredients such as fish collagen and tea tree oil is useful for increasing skin elasticity and has anti bacterial properties for the skin. This study aims to formulate the best facial soap formulation with two factors and three levels, the first factor is the addition of tea tree oil with a level (0,5%; 0,7%; and 0,9%) and the second factor is the proportion of fish collagen addition with level (3%; 4%; and 5%). The best facial soap product data formulation was obtained by using a two-way ANOVA analysis with a 95% confidence level, then continued with Duncan Multiple Range Test (DMRT) with a 5% significance level. The best formulation was obtained with A.X treatment (3% collagen and 0,5% tea tree oil). The results of the analysis were carried out based on the selection of the best formulation for liquid soap preparations with the addition of 3% fish and 0,5% tea tree oil. The results of the A.X facial soap preparation are in accordance with SNI 4085:2017 and standards for pH value of 7.,7, free fatty acid content of 0,59% and viscosity of 966,67 cP, while the total active ingredients of 3,97% do not meet SNI 4085:2017
Keyword: kolagen ikan, sabun cair, surfaktan, tea tree oil

Judul: Face Cream Formulation with Natural Active Ingredients at PT Ratu Bio Indonesia
Abstrak: Industri kosmetik yang semakin berkembang menjadi daya tarik bagi PT RBI dalam mengembangkan bisnisnya untuk produk-produk kosmetik. Salah satu produk kosmetik yang ingin dikembangkan adalah krim wajah untuk mengatasi masalah jerawat dan tidak menyebabkan kulit kering. Bahan aktif yang sesuai untuk permasalah tersebut adalah tea tree oil dan kolagen ikan. Penelitian ini bertujuan mengetahui formulasi krim wajah terbaik dengan satu faktor dan tiga taraf uji, yaitu persentase penambahan tea tree oil dengan taraf (1%; 1,25%; 1,5%). Penelitian dilakukan dengan tiga tahapan, yaitu persiapan bahan, formulasi krim wajah, dan pengujian karakteristik. Pemilihan formulasi krim wajah terbaik ditentukan berdasarkan parameter pengujian karakteristik terpilih dengan pembobotan kualitas metode termodifikasi. Berdasarkan hasil pembobotan kualitas, formulasi dengan persentase penambahan tea tree oil sebanyak 1,5% (F3) memiliki keunggulan yang lebih dibandingkan dengan formulasi lainnya. Formulasi tersebut menunjukan karakteristik krim wajah yang baik, diantaranya memiliki nilai pH 7,26; daya sebar 5 cm; viskositas 10360 cP; ukuran globul 1,16 μm; penampakan homogen; dan tipe emulsi m/a., The growing cosmetic industry has become an attraction for PT RBI in developing its business for cosmetic products. One of the cosmetic products that want to be developed is a face cream to treat acne problems and does not cause dry skin. The active ingredients that are suitable for this problem are tea tree oil and fish collagen. This study aims to determine the best facial cream formulation with one factor and three test levels, namely the percentage of addition of tea tree oil with a level (1%; 1,25%; 1,5%). The research was conducted in three stages, namely preparation of ingredients, formulation of facial cream, and testing of characteristics. The selection of the best facial cream formulation was determined based on the selected characteristic test parameters by weighting the quality of the modified method. Based on the quality weighting results, the formulation with the percentage addition of tea tree oil as much as 1,5% (F3) has more advantages compared to other formulations. The formulation shows good facial cream characteristics, including having a pH value of 7,26; spreadability 5 cm; viscosity 10360 cP; globule size 1,16 m; homogeneous appearance; and o/w emulsion type.
Keyword: cosmetic, face cream, fish collagen, formulation, tea tree oil

Judul: Implementation of Spatio-Temporal Change Query in Relational Database.
Abstrak: Geographic object changes in various views. Object changes are recorded using a model of static storage. No historical connection between old version data and new version data has been built. For that, a storage model of spatio-temporal queries that can analyze spatio-temporal changes has been developed. The object changes the geometry are grouped according to the taxonomy of Spatio-Temporal Pattern Change. This research has been able to apply the query patterns change including born, expand, merge, contract, split, normal and die. This query based on geometric (area) changes. The implementation of spatio-temporal change queries represents an object changes continuously with easy, change detection is done by comparing two versions of data. Keyword: spatio-temporal change query, spatio-temporal change pattern.
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