The induced cracks on the concrete lining of the intake pressure tunnels may cause the water seep into the surrounding media leading to develop a hydro pressure on the external surface of the lining. In the common design practice, the lining can be designed to tolerate with this pressure using the Schleiss method. However, when the tunnel is constructed above the underground water, the seepage ...

Abstrak. Buah tomat (Lycopersicum escuentum Mill) merupakan buah yang cepat mengalami kerusakan setelah dipanen sehingga diperlukan cara untuk mempertahankan kesegaran dari dan sayuran agar bertahan lebih lama bisa dikonsumsi dalam keadaan segar. Pengemasan plastik dengan perforasi metode paling murah memperpanjang masa simpan buah. Tujuan penelitian ini adalah melihat pengaruh variasi penyimpa...

The authors comment on the Lanz classification of the median nerve ramification at wrist level. The authors outline the importance of having very good knowledge of this classification for hand surgeons, plastic surgeons and neurosurgeons, in order to prevent iatrogenic lesions of the median nerve branches at wrist level. The regional anatomy is of utmost importance for carpal tunnel syndrome su...

The deformation control effect of loess tunnel composite foundation plays an important role in optimization design and reinforcement evaluation. Systematically evaluate the adaptability jet grouting pile shallow collapsible tunnel. Taking buried section Fujiyao Tunnel with a depth 20 m as example, using MIDAS finite element numerical simulation software, during construction settlement after are...

This paper presents a computational homogenization shakedown analysis of periodic perforated materials with von Mises matrices. The plastic behaviors the under cyclic macroscopic loads are studied by means kinematic theorem and method. micro-fields approximated edge-based smoothed finite element resulting large-scale optimization problem is efficiently solved using conic solver, enabling large ...

the construction of underground tunnel plays a more and more important role in the development of big cities. one of the most important problems caused by the construction of the tunnel is that underground excavation will cause large settlement of the ground and buildings. previous studied showed the difference between numerical and experimental results. in this study the case study of niyayesh...

nowadays deep excavations are needed for construction of foundation of high rise buildings, providing space for parking and etc. in some cases deep excavations may be constructed in the vicinity of the subway tunnels and causes unpredicted extra displacements and internal forces in tunnel lining of tunnels which were not designed for them and consequently affect serviceability of tunnel. theref...

One way to increase the heat transfer is to use perforated twisted tapes with different hole diameters, which largely improve heat transfer with an increase in the heat transfer area at the constant volume and more mixed flow. In the previous studies, the effect of nanofluids with perforated twisted tapes is less studied. In this work, the performance of water / iron oxide nanofluid in a double...