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All Journal Dentika Dental Journal JURNAL TEKNOLOGI DAN OPEN SOURCE
Fitri Isnaini
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Computer Science & IT Dentistry

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EFEK KOMPOSISI PARAFIN DAN MALAM LEBAH TERHADAP EKSPANSI TERMAL LINIER MALAM MODEL: EFFECT PARAFFIN AND BEESWAX RATIO TO LINEAR EXPANSION OF MODELLING WAX Fitri Isnaini; Dyah Irnawati; Widowati Siswomihardjo
Dentika: Dental Journal Vol. 14 No. 1 (2009): Dentika Dental Journal
Publisher : TALENTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (270.273 KB) | DOI: 10.32734/dentika.v14i1.1966

Abstract

Modelling wax is a pattern wax for complete denture fabrication. It consists of various waxes and other components. Thecomposition influenced the physical properties of modelling wax. The objective of this study was to examine the effect ofparaffn to beeswax ratio on the linear thermal expansion (LTE) of modelling wax. The modelling waxes consist of paraffin (Pertamina, Kalimantan), beeswax (SEA, Yogyakarta), carnauba wax (PT Bratachem, Indonesia), and dammar(Kalimantan). Five compositions of waxes were made with different paraffin to beeswax ratio (paraffin: beeswax: carnauba wax: dammar in % weight): K1 = 70:20:4:6, K2 = 72.5:17,5:4:6, K3 = 75:15:4:6, K4 = 77.5:12.5:4:6, and K5 =80:10:4:6. Six specimens (305 x 22.2 x 14.3 mm) were made of each composition. The specimens were immersed inbathing water at 25°C and 40°C for 20 minutes, and the specimen length was measured by travelling microscope aftereach immersion. The percentage of the LTE was measured. Data were analyzed by one-way Anova and LSD0.05. Theresults showed that the LTE of modelling waxes was between 0.27 + 0.02 % (70:20 ratio) and 0.73 + 0.06 % (80:10ratio). The Paraffin to beeswax ratio influenced the LTE of modelling waxes and showed the significant differencesbetween all compositions (p<0.5). As conclusion, the paraffin to beeswax ratio influenced the linear thermal expansion ofmodelling wax.
IMPLEMENTATION OF WATERFALL METHOD IN PD INVENTORY INFORMATION SYSTEMADIWANGI KARAWANG fitri isnaini; Wahyudi Prabowo
JURNAL TEKNOLOGI DAN OPEN SOURCE Vol. 4 No. 1 (2021): Jurnal Teknologi dan Open Source, June 2021
Publisher : Universitas Islam Kuantan Singingi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/jtos.v4i1.1390

Abstract

In the era of Information Systems, development changes, especially in the field of sales, have changed very rapidly. AdiWangi Trading Company is one of the companies engaged in the sale of staple goods. In providing services to customers and the general public, PD Adiwangi has not been able to fulfill information needs optimally. The process of data collection is still done manually, so it takes a long time to complete it. With the current process, customers often feel that they have been served a long time and for the company itself there are often differences between the items in the data recorded and the items stored in PD Adiwangi, so that why this research uses waterfall method. The design stages used include program planning, program design, database, and program development. Inventory Information System with manual record by inputting into excel and record incoming goods. Whereas, outcoming goods recorded rarely, employees are not taken for placement on shelves. It has become a habit until now so that inventory of goods also not observed. From the results of the study, it can be concluded that the program design made named Inventory program design at PD AdiWangi. It is expected to facilitate the process of data collection, as well as making reports quickly and accurately compared to systems manually.
Co-Authors Dyah Irnawati Wahyudi Prabowo Widowati Siswomihardjo