A patient dose distribution was calculated by a 3D multi-group S N particle transport code for intracavitary brachytherapy of the cervix uteri and compared to previously published Monte Carlo results. A Cs-137 LDR intracavitary brachytherapy CT data set was chosen from our clinical database. MCNPX version 2.5.c, was used to calculate the dose distribution. A 3D multi-group S N particle transpor...

SimMechanics can be used for modelling of mechanical systems of any degree of freedom in MATLAB/Simulink environment. Mechanical systems have physical properties that use physical modelling blocks in SimMechanics that relates to geometric and kinematic. By using this toolbox, it saves the time and effort to derive the equations of motion. SimMechanics provides a visualization and animation of m...

A finite element (FE) model of the human foot and ankle was developed from 3D reconstruction of 2 mm coronal MR images from the right foot of a normal male subject using the segmentation software, Mimics. Solid models of 28 foot bones and encapsulated soft tissue structures models established in Solidworks software were imported into ABAQUS for creating the tetrahedral FE meshes. The plantar fa...

We use Brownian motion ideas to study Schriidinger operators H = +A + V on Lp(R”). In particular: (a) We prove that limt+m t-l In /I e&H j111.9 is p-independent for a very large class of V’s where 11 A ll,,,n = norm of A as an operator from L’ to L”. (b) For Y > 3 and V E LY/~--E n L”Ip+c, we show that sup jl eetH Ilm,m -: (D if and only if H has no negative eigenvalues or zero energy resonance...

Salah satu komponen yaitu poros yang dikenai puntiran akan mengalami deformasi puntir. Semakin besar puntir menunjukkan kemampuan dari mesin rendah, begitu sebaliknya. Permasalahan sering terjadi pada saat dilakukannya pengujian adalah pengolahan data menjadi kurva tegangan-renggangan geser membutuhkan usaha tidak sedikit. Jika spesimen di gunakan batang padat, maka timbul gradient tegangan cuk...

Pengelasan merupakan proses penyambungan secara permanen atau lebih material logam dengan ikatan metalurgi yang dihasilkan pada waktu dalam keadaan lumer cair. AA5052 jenis paduan kekuatan tertinggi dari kelas tidak dapat diolah panas. Kekuatan kelelahannya tinggi kebanyakan aluminium lainnya. Alloy 5052 memiliki ketahanan baik terhadap atmosfer laut dan korosi air asin, serta kemampuan kerja s...

The article considers the possibility of using finite element method for strength calculations nodes and parts modern locomotives. There are examples solid-state models construction bogie frames in SolidWorks software package. Developed finite-element allow determining tense-strained state elements crew part final outcome modeling is stress distribution diagrams locomotive frame. data obtained ...