Thrust from a multicycle pulse detonation engine operating at practical flight altitudes will vary with surrounding environment pressure. We have carried out the first experimental study using a detonation tube hung in a ballistic pendulum arrangement within a large pressure vessel to determine the effect that the environment has on the single-cycle impulse. Air pressure decreased below 100 kPa...

Flood disasters and snow disasters are frequent disasters in China, causing considerable economic loss and serious damage to towns and farms. The problems of how these two disaster types distribute and what disaster-forming environments are important to their occurrence are the most pressing problems in disaster risk assessment and salvage material arrangement. The present study aims to establi...

Microtubules suppor t nuclear nonproliferation arrangement L aporte et al. describe how a mi-crotubule array reorganizes the nucleus to aid the survival of qui-escent budding yeast. Eukaryotic cells undergo a dramatic rearrangement when they temporarily exit the cell cycle and become qui-escent. Budding yeast, for example, reorganize their actin cyto-skeleton into immobile structures called act...

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CONTENTS Introduction ........................................................ Nuclear arrangement in the teleneephalon .............................. The olfactory bulb ............................................... The accessory olfactory bulb ..................................... Nucleus olfactorius anterior ...................................... The nuclear groups in the ventromedial porti...

We define a double pseudoline as a simple closed curve in the open Möbius band homotopic to the double of its core circle, and we define an arrangement of double pseudolines as a collection of double pseudolines such that every pair crosses in 4 points – the crossings being transversal – and induces a cell decomposition of the Möbius band whose 2-dimensional cells are 2-balls, except the unboun...

In this work, the melting process of compounds containing nanoparticles of NePCM in a square hole with different angles affected by two pairs of well-spring heat source on horizontal walls was numerically investigated. Four different configurations of elements were employed to investigate the effect of changes in the position of elements on the horizontal walls of the well-spring landscape on t...

We present a practical algorithm for the automatic generation of a map that describes the operation environment of an indoor mobile service robot. The input is a CAD description of a building consisting of line segments that represent the walls. The algorithm is based on the exact cell decomposition obtained when these segments are extended to innnite lines, resulting in a line arrangement. The...

The recent decision to continue cattle grazing in the VANP has not been uniformly welcomed. There exists significant scientific evidence detailing the environmental impact of grazing. This paper examines whether an opportunity has been missed to resolve the ongoing conflict that accompanies the continuation of grazing in the VANP. The potential of economic instruments in resolving this unique l...