Ditemukan 9 dokumen yang sesuai dengan query
Sun, Xiao-Yu
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In his thesis, Xiaoyu Sun conducts the first total synthesis of all possible stereoisomers of plakortide E and also confirms the absolute configuration of natural plakortide E. Xiaoyu Sun subsequently converts plakortide E methyl ester to plakortone B in a biomimetic conversion. Construction and functionalization of cyclic peroxides are notoriously difficult due to the very low O-O bond dissociation energy. Plaktoride E is isolated from the Jamaican marine sponge platorits halichondrioides and contains a five-membered ...
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Berlin: Springer, 2012
e20406116
eBooks Universitas Indonesia Library
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Suatu penelitian “cross-sectional” dilakukan untuk mempelajari hubungan antara kadar peroksida lipid plasma dengan usia serta factor-faktor lain yang ada pada kelompok lanjut usia. Empat ratus empat puluh pria dan wanita berusia 55-85 tahun dipilih secara random dari para lanjut usia binaan puskesmas di Jakarta. Pemeriksaan fisik setelah anamnesa dan juga pengambilan sampel darah dilakukan pagi hari dalam keadaan puasa. Lipid plasma dan peroksida lipid plasma diukur jumlahnya menggunakan metode standard. Didapatkan perbedaan kadar peroksida lipid ...
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Medical Journal of Indonesia, 14 (2) April June 2005: 71-77, 2005
MJIN-14-2-AprJun2005-71
Artikel Jurnal Universitas Indonesia Library
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Nowadays the use of over the counter (OTC) bleaching material become more popular. The most common composition of this OTC material is mainly carbamide peroxyde and hydrogen peroxyde in various concentration. There many methods for using carbamide peroxyde as bleaching material, such as spray, gel tray or applicable solution, etc. According to the using methods, the possibility contamination between the material and oral mucous membrane is very high. The purpose of this research is to ...
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Journal of Dentistry Indonesia, 2003
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Artikel Jurnal Universitas Indonesia Library
Endang Suprastiwi
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Carbamide peroxide as a whitening agent for teeth is very popular because the use of this agent is easy and inexpensive. There are two kinds of concentrations, i.e. 10%-15% and 35%. The methods are home bleaching and in office bleaching. For home bleaching, the duration of whitening application is 2-6 weeks, each day for 8 hours, whilst for in office leaching, two hour application will be required. Whitening efficacy might be increased up to 2-5 ...
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Fakultas Kedokteran Gigi Universitas Indonesia, 2005
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Artikel Jurnal Universitas Indonesia Library
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Indonesian Journal of Dentistry 2006; Edisi Khusus KPPIKG XIV: 254-259
There are two basic kinds of tooth whitening agents. The first is over the counter materials and the other is materials used by the dentist or under dentist control. Home bleaching is a technique using l0% carbamide peroxide on a tray applied by patient under dentist supervision. This paper is a review of the effect of 10 % carbamid peroxide home bleaching technique. It is revealed ...
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Journal of Dentistry Indonesia, 2006
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Artikel Jurnal Universitas Indonesia Library
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Indonesian Journal of Dentistry 2006; Special Edition KPPIKG XIV: 368-373
Tooth bleaching has become a popular treatment for esthetic improvement in dentistry. There are several 10% carbamide peroxide bleaching agents that are available in Indonesia which contained potasium nitrate-flouride or without potasium nitrate-flouride. However, there was no clinical report about these products in Indonesia. This study was conducted to compare the effectiveness of two bleaching and sensitivity of tooth and gingiva. Sixty-four participants were divided into ...
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Fakultas Kedokteran Gigi Universitas Indonesia, 2006
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Artikel Jurnal Universitas Indonesia Library
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Indonesian Journal of Dentistry 2006; Edisi Khusus KPPIKG XIV:294-296
Dental bleaching has been considered as a feasible approach for dental esthetic, and many dental bleaching products can be seen in the market. Therefore, the side effect of a such dental product should be studied. This study was aimed to detemine the effect of carbamide peroxide-containing home bleaching agent on the hardness of dental amalgam surface structure. Forty amalgam filling specimens were divided into 4 groups, which ...
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Journal of Dentistry Indonesia, 2006
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Artikel Jurnal Universitas Indonesia Library
Hary Utomo Muhammad
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ABSTRAK
Membran fosfolipid sel endotelial arteri koroner sangat rentan untuk mengalami oksidasi oleh radikal bebas, karena mengandung rantai asam lemak berikatan rangkap berganda. Demikian pula lipoprotein plasma terutama fraksi LDL, bahkan hasil modifikasi oksidatifnya akhir-akhir ini diyakini berperanan dalam pembentukan sel busa serta plak aterosklerotik.
Meskipun belum dapat dibuktikan bahwa peroksida lipid, hasil modifikasi oksidatif tersebut, merupakan penyebab primer penyakit jantung koroner (PJK), tetapi kadarnya dilaporkan meninggi dalam plasma darah penderita, selaras dengan peningkatannya dalam jaringan ...
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1990
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
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Indonesian Journal of Dentistry 2006; Edisi Khusus KPPIKG XIV: 288-293
ln dental bleaching, carbamide peroxide is usually used at concentration of 10%, 15%, to 20%. The result of our previous study showed that the application of l0% and 15% carbamid peroxide bleaching agent has increased the surface hardness of glass ionomer cement. The purpose of this study was to observe the effect of 20% carbamide peroxide bleaching to glass ionomer surface hardness. Twenty specimens of glass ...
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[Fakultas Kedokteran Gigi Universitas Indonesia, Journal of Dentistry Indonesia], 2006
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Artikel Jurnal Universitas Indonesia Library
