The purpose of this research is to know the effectiveness use Pasak Earth Extract, Propolis Madu and 17-α Metyltestosteron on sex ratio Betta sp. This study was conducted using a complete randomized design (RAL) with 4 treatments 3 replications. treatment consists immersion Estrak methanol tongkat (EPB) concentration dose 10 ml / liter, B by soaking propolis Honey 60 C 17α-methyltestosterone at...

This paper presents updated methods for locating the Poleward and Equatorward Auroral Luminosity Boundaries (PALB EALB) directly from IMAGE Far UltraViolet (FUV) images of Northern Hemisphere auroral oval. Separate boundaries are determined measured at different FUV wavelengths. In addition, new indirectly estimating Open-Closed magnetic field line Boundary (OCB) Precipitation (EPB) locations p...

Abstract The present research exposes the investigation on three-dimensional modeling of single and twin metro tunnels for case Tehran line. At first, simulation implemented comparison ground movements in tunnels. Then has been performed influence effective parameters EPB-TBM surface settlements throughout excavation. overcutting, shield conicity, grouting, final lining system modeled face supp...

Qomroud water conveyance tunnel (lot 1&2) with the length of 16 kilometers is considered as one of the greatest development and national projects in Iran. Since about 2 kilometers of tunnel pass through alluvium and the rest of the tunnel pass through various types of geological units, and due to the complexity of geological condition and variety of effective criteria, suitable selection of exc...

近年来，随着TOD的迅速发展，大直径TBM盾构机在城市轨道交通隧道施工中得到了广泛的应用，但 其排渣方式有连续皮带机排渣和有轨机车排渣两种，各具特点。随着TBM盾构机的广泛使用，两种排渣方式的选择问 题尤为突出。选择合适的排渣方式，可以充分发挥大直径TBM盾构施工高效的特点，有效缓解工程工期压力，提高效 率。因此，如何选择合适的排渣方式，本文将从技术、经济性两方面探讨连续皮带排渣与有轨机车排渣的优缺点及应 用场景。