Garuda - Garba Rujukan Digital

TORTUOSITAS PADA MODEL 3D BATUAN BERPORI Firmansyah, Firmansyah; Feranie, Selly; Latief, Fourier D.E; Tobing, Prana F. L.
Jurnal Spektra Vol 15, No 2 (2014): Spektra: Jurnal Fisika dan Aplikasinya
Publisher : Jurnal Spektra

Show Abstract | Download Original | Original Source | Check in Google Scholar

Telah dilakukan perhitungan tortuositas dalam model 3D batuan berpori. Model 3D batuan berpori ini dibentuk oleh butiran bola yang didistribusikan secara acak, untuk melihat pengaruh distribusi tersebut terhadap nilai porositas (Ï)dan tortuositas (Ï). Perhitungan dibatasi pada model dengan porositas 10%, 15% dan 20% serta ukuran jari-jari butiran bola dalam rentang 5-10, 10-15, dan 15-20 (dalam ukuran pixel). Diperoleh hasil perhitungan untuk : 1) Porositas 10% dengan jari-jari butir seperti disebutkan sebelumnya, nilai tortuositas secara berurutan yaitu Ï = 2,127Â±0,846, Ï = 1,669Â±0,610 dan Ï = 1,732Â±0,371; 2) Porositas 15%, nilai tortuositas secara berurutan yaitu Ï = 1,542Â±0,266, Ï = 1,477Â±0,231 dan Ï =1,359Â±0,232; 3) Porositas 20%, nilai tortuositas secara berurutan yaitu Ï = 1,806Â±0,493, Ï = 1,708Â±0,502 dan Ï = 1,536Â±0,582. Terlihat bahwa untuk porositas yang sama dengan jari-jari butir yang berbeda akan menghasilkan nilai tortuositas yang berbeda. Hal tersebut bisa terjadi karena pengaruh distribusi acak butiran. Nilai tortuositas paling tinggi berdasarkan hasil diatas adalah Ï = 2,12 sedangkan menurut asumsi dalam persamaan Kozeny-Carman untuk menghitung permeabilitas bernilai Ï = 2,5 untuk semua nilai porositas. Sehingga nilai tortuositas yang dianggap konstan untuk semua nilai porositas perlu dipertimbangkan kembali penggunaannya jika dilihat dari hasil perhitungan tortuositas pada model 3D batuan berpori ini. Kata kunci: Jari-jari butiran, Tortuositas, Perumusan Kozeny-Carman, Model 3D batuan berpori

Rancang Bangun Alat Eksperimen Sederhana Gerak Proyektil Wijaya, Pradita Adnan; Fauzi, Umar; Latief, Fourier Dzar Eljabbar; Firdaus, M. Thoha
Jurnal Riset dan Kajian Pendidikan Fisika Vol 4, No 1 (2017): April 2017
Publisher : Universitas Ahmad Dahlan

Menentukan gerak proyektil merupakan permasalahan penting dalam sejarah perkembangan ilmu mekanika. Gerak proyektil adalah gerak suatu benda yang diberi kecepatan awal, kemudian menempuh lintasan yang arahnya sepenuhnya dipengaruhi oleh percepatan gravitasi dan hambatan udara. Untuk mempermudah pemahaman peserta didik mengenai materi gerak proyektil, telah dibuat suatu alat eksperimen gerak proyektil sederhana. Diharapkan alat ini dapat digunakan sebagai media pembelajaran yang mudah diaplikasikan, ditiru dan terjangkau bagi pihak sekolah maupun lembaga pendidikan.Â Determining projectile motion is an important issue in the history of the development of mechanics. The motion of a projectile is the motion of an object given the initial velocity, then travels the path whose direction is completely influenced by the acceleration of gravity and air resistance. To facilitate students understanding of projectile motion material, a simple projectile motion experiments tool has been developed. It is expected that this tool can be used as a learning media that is easy to apply, imitated and affordable for schools and educational institutions.

Differences of Micro-CT evaluation of the obturation sealing capability between thermoplastic carrier-based condensing techniques and lateral heat condensation techniques Amida, Aya; Aripin, Dudi; Hayati, Ayu Trisna; Latief, Fourier Dzar Eljabbar; Djustiana, Nina; Cahyanto, Arief; Usri, Kosterman; Tjahajawati, Sri; Mariam, Marry Siti; Widyaputra, Sunardhi
Padjadjaran Journal of Dentistry Vol 34, No 2 (2022): July
Publisher : Faculty of Dentistry Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol34no2.41384

ABSTRACT Introduction: Root canal filling is an important part of root canal treatment that aimed to seal the root canal system, to prevent bacterial penetration and their toxins into periradicular tissues and to provide favourable environment for periapical healing. Thermoplasticized technique were developed to produce filling with homogenous mass, to achieve optimal sealing ability and to increase the quality of root canal filling. The aim of this study is to analyzed differences of Micro-Computed Tomography (Micro-CT) evaluation of the obturation sealing capability between thermoplastic carrier-based condensing techniques and lateral heat condensation techniques. Methods: This study was conducted under an in-vitro quasi experimental methode to 36 specimens of maxillaris centralis incisivus which were divided to 3 groups, (A) thermoplasticized carrier-based technique (GuttaCore System), (B) warm lateral condensation technique (heat carrier SystemB), (C) cold lateral condensation as control group. Sealing ability is evaluated based on the measurement results of volume percentages of filling material and sealer, volume of void, and surface density, that which was calculated from the 3D volumetric image of Micro-CT device. Data were statistically analysed using Analisis of Variance (ANOVA) and t-test. Result: The result showed significant difference of percentage filling material and sealer volume in apical third (p<0.05), whereas there were no significant differences of void volume in apical third, middle third, coronal third or along the canal (p>0.05). Conclusion: Thermoplastized carrier-based technique is not better than warm lateral technique.Keywords: sealing ability; root canal filling; thermoplasticized carrier-based technique; warm lateral technique.

ANALISIS MIKRO-CT SEBAGAI METODE PILIHAN TERHADAP PENELITIAN PERTUMBUHAN TULANG KRANIOFASIAL Parmasari, Wahyuni Dyah; Ardani, I Gusti Wahju; Narmada, Ida Bagus; Kuntaman, Kuntaman; Latief, Fourier Dzar Eljabbar; Bahraini, Fahrisah Nurfadeliah; Regita Cahyani, Nafansya
Prosiding Seminar Nasional COSMIC Kedokteran Vol 3 (2025): Edisi 2025
Publisher : Lembaga Penelitian Dan Pengabdian Kepada Masyarakat Universitas Wijaya Kusuma Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Latar Belakang: Micro-CT adalah metode pencitraan 3D yang masih jarang ditemui di Indonesia. Analisis ini bermanfaat untuk penelitian untuk mengetahui titik anatomis yang sulit ditentukan secara manual, anomali dan malformasi dari cranium serta dapat mengetahui kepadatan tulang kraniofasial. Dalam pertumbuhan tulang dapat dideteksi secara kuantitatif yaitu pengukuran antropometri, maupun kualitiatif yaitu kualitas pertumbuhan tulang. Tujuan: mengukur dimensi transfersal dan sagital dengan analisis Mikro-CT sebagai parameter pertumbuhan tulang kraniofasial. Metode: Sampel menggunakan calvaria tikus betina dewasa dengan menganalisis daerah dasar calvaria yaitu basisphenoid dan concha nasalis. Analisis sampel dilakukan dan diukur dengan Aplikasi DataViewer versi 1.6.0.0 64-bit. CTVox versi-3.3.1 64-bit digunakan untuk menampilkan visual 3D. Mesin mikro-CT yang digunakan adalah Bruker SkyScan-1173 High Energy Micro-CT. Hasil: Menentukan titik landmark terlateral dari calvaria, kemudian dihubungkan menjadi garis ukur, untuk mendapatkan jarak yang dapat diukur sebelum dan sesudah perlakuan. Didapatkan MXHR yaitu 9.366 mm dan Interinsisifus (I) dengan titik paling atas cranium yaitu 17.914 mm. Pada concha nasalis, ditentukan titik paling superfisial dan caudal kemudian diukur untuk mengetahui tinggi concha nasalis dalam kurun waktu tertentu. Kesimpulan: Mikro-CT dapat menjadi metode pilihan untuk pengukuran tulang kraniofasial dari aspek anterior-posterior maupun sagital dan dapat menyelidiki kualitas dari tulang dengan satuan grey-scale value.

Anatomical Landmarks and Measurements of Craniofacial Structures: A Micro-CT Analysis Parmasari, Wahyuni Dyah; Ardani, I Gusti Aju Wahju; Narmada, Ida Bagus; Nugraha, Alexander Patera; Putra, Ramadhan Hardani; Latief, Fourier Dzar Eljabbar; Bahraini, Fahrisah Nurfadeliah
Odonto : Dental Journal Vol 12, No 1 (2025): April 2025
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/odj.12.1.29-43

In this study, an adult rat's calvaria was used to examine craniofacial anatomical landmarks of maxilla and mandible using Micro-Computed Tomography (micro-CT) as the marker of craniofacial growth and development in rat. It is used to assist research, translating landmark points for diagnosis. Landmarks on the rat’s calvaria were determined to set the measurements of two specified points. One of the ways to validate craniofacial growth and development is to look at the differences between craniofacial before and after a specified period or treatment. With micro-CT analysis, the researchers are more precise in determining the difficult points in the cranium.The sample analysis was carried out and measured by DataViewer version 1.6.0.0 64-bit Application. CTVox version-3.3.1 64-bit is used to display 3D visuals. Reconstruction results after adjusting the data range were 30-255 (the color range 0-255). The machine used was Bruker SkyScan-1173 High Energy Micro-CT. Findings anatomical landmarks for the examples, the maxilla determined I for the point on premaxilla between jawbone and lingual surface of upper incisors. In the mandible, I’ for the most anterior edge of the alveolar bone on the convexity of the lower incisor. The unevenness of the cranium made manual measurements difficult and not possible. However, this micro-CT method makes the landmark point determination more detailed and dependable. This makes geometric measurements of craniofacial more reliable. Micro-CT analysis is a more dependable method to determine anatomical landmarks and measure craniofacial structures as the marker of craniofacial growth and development in rat.

Anatomical Landmarks and Measurements of Craniofacial Structures: A Micro-CT Analysis Parmasari, Wahyuni Dyah; Ardani, I Gusti Aju Wahju; Narmada, Ida Bagus; Nugraha, Alexander Patera; Putra, Ramadhan Hardani; Latief, Fourier Dzar Eljabbar; Bahraini, Fahrisah Nurfadeliah
Odonto : Dental Journal Vol 12, No 1 (2025): April 2025
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/odj.12.1.29-43

In this study, an adult rat's calvaria was used to examine craniofacial anatomical landmarks of maxilla and mandible using Micro-Computed Tomography (micro-CT) as the marker of craniofacial growth and development in rat. It is used to assist research, translating landmark points for diagnosis. Landmarks on the rat’s calvaria were determined to set the measurements of two specified points. One of the ways to validate craniofacial growth and development is to look at the differences between craniofacial before and after a specified period or treatment. With micro-CT analysis, the researchers are more precise in determining the difficult points in the cranium.The sample analysis was carried out and measured by DataViewer version 1.6.0.0 64-bit Application. CTVox version-3.3.1 64-bit is used to display 3D visuals. Reconstruction results after adjusting the data range were 30-255 (the color range 0-255). The machine used was Bruker SkyScan-1173 High Energy Micro-CT. Findings anatomical landmarks for the examples, the maxilla determined I for the point on premaxilla between jawbone and lingual surface of upper incisors. In the mandible, I’ for the most anterior edge of the alveolar bone on the convexity of the lower incisor. The unevenness of the cranium made manual measurements difficult and not possible. However, this micro-CT method makes the landmark point determination more detailed and dependable. This makes geometric measurements of craniofacial more reliable. Micro-CT analysis is a more dependable method to determine anatomical landmarks and measure craniofacial structures as the marker of craniofacial growth and development in rat.

Title

Found 6 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 6 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 6 Documents
Search