Ditemukan 2 dokumen yang sesuai dengan query
Lilies Widojoko
Abstrak :
ABSTRACT
The finite element method has been applied to the study the behavior of vertically loaded single micro pile, the nine piles in a close group, the three piles in a row group in a homogeneous non linearly behavior medium, that is cohesion less soil.
Bidimensional and axis metric elements have been used in the analysis to determine the stress and the strain state in the soil around the piles and the deformation of the pile due to the grouting pressure of the micropiles.
This paper uses Mohr Coulomb model with a parameter controlling dilatancy.
The effect of grouting pressure in the soil around the member of piles group at three-diameter spacing are presented and analyzed. The efficiency of each piles and piles group at two until five spacing diameter, at 10% up to 50% deformation of pile are shown and studied. Those efficiency graphs are compared with the efficiency of driven pile group and bored pile group.
The effect of dilatancy to the deformation of pile at different grouting pressure is presented.
Using super positioned method that efficiency graph can be used for evaluating the efficiency of bigger micro piles group.
1994
T-Pdf
UI - Tesis Membership Universitas Indonesia Library
Muhammad Waliyyulhaq
Abstrak :
Penelitian ini bertujuan untuk membandingkan kualitas dari perencanaan terapi menggunakan conformity index (CI) dan homogeneity index (HI) pada kasus kanker paru-paru. Dengan menggunakan 5 pasien kanker paru-paru yang berada pada paru kanan. Dilakukan evaluasi pengaruh dari dose grid, kalibrasi densitas elektron berdasarkan fan beam dan cone beam CT.
Hasil dari penelitian ini menunjukkan pasien dengan volume target berukuran besar memiliki kecenderungan CI yang rendah dan HI yang tinggi. Pada penggunaan variasi grid dose, nilai CI dan HI masing-masing kurang dari 0.02 dan 0.013. Perbedaan perhitungan antara cone beam dan fan beam adalah 10% untuk CI dan 60% untuk HI.
This research aims to compare the quality of planning by using conformity index (CI) and homogeneity index (HI) for lung cancer cases. We used 5 lung cancer patients which is located in right lung. We evaluated the impact of dose grid, eletron density calibration based on fan beam and cone beam CT.
The results of shows the patient with big size target volume has tendency low CI value and high HI. On the use of grid dose variation, the CI and HI values less than 0.02 dan 0.013, respectively. The differences between the cone beam and fan beam calculation was 10% for CI and 60% for HI.
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2015
S62136
UI - Skripsi Membership Universitas Indonesia Library
