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All Journal Jurnal Permukiman Jurnal Inovasi Pendidikan dan Sains JURNAL ILMIAH GLOBAL EDUCATION Buletin Kedokteran dan Kesehatan Prima
Davin, Davin
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Transformasi Dan Branding Creative Kawasan Untuk Keberlanjutan Perkotaan Telaah Kasus Perancangan Simpul Kreatif Pulogadung C@P Sobandi, Ramalis; Tyagitha, Binar; Davin, Davin
Jurnal Permukiman Vol 13 No 2 (2018)
Publisher : Direktorat Bina Teknik Bangunan Gedung dan Penyehatan Lingkungan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31815/jp.2018.13.112-126

Abstract

Tumbuhnya aktivitas industri adalah salah satu penyebab munculnya pusat-pusat perkotaan. Ketika globalisasi dan perkembangan teknologi maupun perubahan iklim terjadi, kota dan industri didalamnya mengalami perubahan yang dinamis dan mengancam keberlanjutan serta kelayakhunian ruang-ruang perkotaan. Ekonomi kreatif membuka peluang baru untuk perkembangan kawasan perkotaan yang berkelanjutan dan layak-huni, terbukti dari berbagai contoh kasus global di Inggris, Cina, Korea hingga beberapa contoh lokal di Jakarta dan Bandung.  Telaahan ini mencoba menelusuri peluang keberlanjutan pembangunan perkotaan melalui transformasi Kawasan Industri Pulo Gadung sebagai simpul ekonomi kreatif tingkat nasional. Telaahan ini merekomendasikan konsep dan proses transformasi berlapis yang dilakukan berdasarkan metoda komparasi studi kasus dan pendekatan urban acupuncture dalam kerangka prisma 3 lapis. Konsep transformasi mengindikasikan adanya peluang keberlanjutan dan kelayakhunian pembangunan perkotaan melalui transformasi kawasan Industri JIEP Pulogadung menjadi simpul dari jejaring ekonomi kreatif. Kasus JIEP ini juga menunjukkan peluang transformasi bertahap dengan sumber daya, biaya dan waktu yang terbatas dengan tetap dapat mencapai hasil yang maksimal melalui perencanaan, penyepakatan dan kosistensi yang didasarkan atas kebijakan dan perencanaan yang tepat.
Antibacterial Effectiveness Test of Lemongrass Leaf Extract (Cymbopogon citratus) on the Growth of Streptococcus sanguinis on Removable Orthodontic Acrylic Bases Davin, Davin; Wijaya, Cindy Denhara; Sianipar, Nora Fine Damayanti
JURNAL INOVASI PENDIDIKAN DAN SAINS Vol 7 No 1 (2026): April
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jips.v7i1.2781

Abstract

The use of acrylic base as a removable orthodontic base plate has the disadvantage of being porous, thus increasing the risk of microorganism colonization, including Streptococcus sanguinis. Lemongrass leaves (Cymbopogon citratus L.) contain secondary metabolites that have antibacterial properties such as alkaloids, saponins, tannins, polyphenols. The purpose of this study was to determine the antibacterial effectiveness of lemongrass leaf extract (Cymbopogon citratus) 40% and 50% against the growth of Streptococcus sanguinis on removable orthodontic acrylic bases. This type of research is a true experimental with a post- test only control group design. The number of groups in this study was 4 (four), each consisting of 6 replications. The antibacterial testing of lemongrass leaf extract used the diffusion method. Data analysis used the Kruskal-Wallis and Mann-Whitney statistical tests. Based on the results of the study, the average number of Streptococcus sanguinis bacterial colonies on removable orthodontic acrylic bases from negative controls, positive controls, 50% and 40% lemongrass leaf extract was 1725±171,980 CFU/mL, 4.17±2,639 CFU/mL, 451.67±57,840CFU/mL, and 662.50±23,889 CFU/mL. The results of the Kruskal-Wallis test stated that there was a significant difference in the average number of colonies between all groups (p=0.000; p<0.05). The results of the Mann-Whitney test stated that there was a significant difference in antibacterial effectiveness between the two different groups (p=0.004; p<0.05). The conclusion of this study is that lemongrass leaf extract has antibacterial effectiveness against the growth of Streptococcus sanguinis on removable orthodontic acrylic bases
Effects of rice husk nanosilica on color stability of metal-ceramic crowns Sinamo, Sopan; Martono, Martono; Ginting, Deva Yani Br; Davin, Davin; Azzanjani, Aisyah Bella; Hadi, Lina; Hasim, Bryan Julio; Watri, Desi; Chiuman, Veranyca
Buletin Kedokteran & Kesehatan Prima Vol. 5 No. 1 (2026): March
Publisher : Fakultas Kedokteran, Kedokteran Gigi, dan Ilmu Kesehatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34012/bkkp.v5i1.8020

Abstract

Background: Metal-ceramic crowns remain a primary choice for dental restoration due to their adequate mechanical strength and relatively low cost. However, their esthetic success depends on the color stability of the porcelain, particularly the opaque layer that masks the underlying metal. Nanosilica derived from rice husks is an environmentally friendly material with potential as a reinforcing agent, but data on its effect on color changes in metal-ceramic crowns remain limited. This study aimed to analyze the effect of adding 0.5% rice husk nanosilica to the opaque layer on color changes in metal-ceramic crowns. Methods: An in vitro experimental study used Co-Cr metal samples coated with porcelain, with color evaluation based on the CIELAB system (L*, a*, b*) via colorimeter before and after nanosilica addition. Nanosilica was synthesized from rice husks and characterized using particle size analysis and scanning electron microscopy. Data were analyzed with Shapiro-Wilk test, Levene test, Welch t-test, and paired t-test.  Results: Characterization results showed nanosilica particles in the nanoscale range with two main distribution peaks and amorphous, spherical morphology with agglomeration tendency. L* values increased significantly, whereas changes in a* and b* values showed no significant differences.  Conclusion: These findings indicate that adding 0.5% rice husk nanosilica to the opaque layer increases brightness and total color change in metal-ceramic crowns, requiring esthetic control in its application.
Efektivitas Ekstrak Daun Serai (Cymbopogon citratus) terhadap Pertumbuhan Staphylococcus aureus pada Basis Akrilik Piranti Ortodonti Lepasan Davin, Davin; Watri, Desi; Sembiring, Meilysa Br
Jurnal Ilmiah Global Education Vol. 7 No. 1 (2026): JURNAL ILMIAH GLOBAL EDUCATION
Publisher : LPPM Institut Pendidikan Nusantara Global

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55681/jige.v7i1.5314

Abstract

This study aimed to evaluate the antibacterial effectiveness of lemongrass (Cymbopogon citratus) extract against Staphylococcus aureus on the acrylic base of removable orthodontic appliances. This laboratory experimental research employed a post-test only control group design using acrylic samples previously inoculated with Staphylococcus aureus ATCC 25923. Four treatment groups were tested: 40% and 50% lemongrass leaf extract, 0.2% chlorhexidine gluconate as the positive control, and DMSO as the negative control. Bacterial colony counts were measured using the total plate count method after the incubation period. The results showed significant differences among the groups (p ≤ 0,05), with the 50% concentration producing the lowest colony count and exhibiting the strongest antibacterial activity. The 40% concentration also demonstrated inhibitory effects, although not as strongly as the 50% concentration. When compared with the positive control, the 50% lemongrass extract showed an effectiveness nearly equivalent to chlorhexidine. These findings indicate that lemongrass extract, particularly at a 50% concentration, can be utilized as a natural disinfectant for removable orthodontic appliances to reduce bacterial counts
Co-Authors Azzanjani, Aisyah Bella Chiuman, Veranyca Ginting, Deva Yani Br Hadi, Lina Hasim, Bryan Julio Martono Martono Sembiring, Meilysa Br Sianipar, Nora Fine Damayanti Sinamo, Sopan Sobandi, Ramalis Tyagitha, Binar Watri, Desi Wijaya, Cindy Denhara