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"Penelitian ini bertujuan untuk mengetahui pengaruh waktu pelapisan bahan adhesif universal sistem self-etch yang terhadap perubahan morfologis mikrostruktur dentin. Lima gigi premolar manusia yang diekstraksi diabrasi dan dihaluskan dari arah oklusal dan medial menggunakan diamond disc grit #600 dan kertas silikon karbida grit #1000, #1500 dan #2000. Bahan adhesif Single Bond Universal diaplikasikan dalam sistem self-etch pada permukaan oklusal dentin yang terbagi menjadi tiga kelompok berdasarkan waktunya yaitu selama 20 detik (n = 3), 30 detik (n = 3) dan 40 detik (n = 3). Spesimen dipolimerisasi dengan LED curing unit, iradiansi 900mW/cm² selama 10 detik. Satu spesimen yang tidak diaplikasi bahan adhesif digunakan sebagai kontrol. Pengamatan SEM dilakukan dengan perbesaran x850, x1,600 dan x3,000. Hasil menunjukkan bahwa terdapat perbedaan gambaran morfologis mikrostruktur dentin sebelum dan sesudah aplikasi bahan adhesif tetapi tidak ada perbedaan antar kelompok 20 detik, 30 detik dan 40 detik. Disimpulkan bahwa waktu pelapisan bahan adhesif tidak mempengaruhi perubahan morfologis mikrostruktur dentin.

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The aim of this study is to evaluate the effect of bonding application time on dentin microstructure created by a universal adhesive in self-etch mode. Five extracted human premolars were sectioned and polished occlusally and medially using diamond disc grit #600 dan silicone carbide paper grit #1000, #1500 and #2000. One universal adhesive, Single Bond Universal was applied on to the occlusal surface of dentin and was divided into 3 groups based on the time: 20 s (n = 3), 30 s (n = 3) and 40 s (n = 3). Specimens were polimerized using LED curing unit, irradiance 900mW/cm² for 10 s, except for one that was left untreated as control. All specimens were observed using SEM at magnifications x850, x1,600 dan x3,000. The result showed that there were morfological differences in dentin microstructure between before and after application but none between specimen groups. It was concluded that bonding application time does not affect the morfological differences in dentin microstructure."

"ABSTRAKPenelitian ini membahas penerapan pelestarian pada koleksi tua milik perpustakaan Museum Sejarah Jakarta. Pelaksanaan pelestarian dalam perpustakaan mencakup kegiatan kontrol kondisi lingkungan dan kondisi fisik koleksi tua perpustakaan. Penelitian ini adalah penelitian kualitatif dengan desain deskriptif. Hasil penelitian menyarankan bahwa penggunaan alat serap air (dehumidifier) dapat membantu mengurangi permasalahan yang dihadapi dalam perpustakaan, yakni dapat mengurangi tingkat kelembaban udara dalam ruangan dan rak penyimpanan koleksi perpustakaan dan mempengaruhi kondisi seasaman dan kadar air pada kertas.

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AbstractThis research discussed aabout the preservation for old manuscripts collection at the Museum History of Jakarta_s Library. The activities of preservationinclude, controlling of the area and physical condition of the old collections. This research used qualitative methodswith descriptive design on it. The result of this research is that dehumidifier can slove the library_s problem. Dehumidifier can reduce the humidity in the library_s room and the rack of collections. It allows to stabilize the acid and moisture in the paper though not in an effective time."

"Skripsi ini membahas pengujian terhadap keasaman kertas daluang di dua tempat yakni Workshop daluang Pak Mufid Sururi dan ruang naskah FIB UI. Penelitian ini adalah penelitian kualitatif bersifat deskriptif. Hasil uji keasaman dari penelitian ini menunjukan bahwa kertas daluang memiliki kualitas ketahanan yang baik. Hasil keluaran dari penelitian ini adalah rekomendasi penggunaan daluang sebagai media restorasi alternatif yang dapat menggantikan kertas washi sehingga dapat melestarikan budaya lokal dan membantu proses restorasi yang dilakukan di berbagai lembaga informasi yang bergerak di bidang restorasi. Selain itu, penelitian ini menyarankan agar lembaga informasi menggunakan kertas daluang karena selain mendapatkan bahan yang lebih murah dan siap pakai juga kualitasnya yang tidak kalah dengan tisu Jepang.;Daluang paper is one of the traditional Indonesian paper which must be preserved.

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This study discusses Daluang resistance against acid paper. The goal is to determine the acidity of the paper Daluang. This study is a descriptive qualitative research, data collection technique was performed under the literature review, interviews, and testing of the completed survey sheets. Test results suggested that this paper has a good resistance against acids that may be recommended as a restoration tool substitute alternative materials wahsi beside that may help to preserve local culture and institutions engaged in this case to get a paper patch is cheap and readily accessible. It can be concluded from these results that daluang has good resistance to acids, but it always need quality control of the outcome."