This report presents an account of the demand made by solar radiation pressure 6n the attitude-control system of an earth satellite whose external configuration is in the shape of a rectangular prism, the surfaces being assumed to be perfectly reflecting. Expressions determining the amount of angular impulse that must be supp~ed by an attitude-control system in the course of a year in order to ...

Preface A special session entitled “Early Earth from accumulation to formation-” was held on May 24, 2015 during the Japan Geoscience Union (JpGU) annual meeting. This session aimed to bring together high-pressure/hightemperature experiment on physics and chemistry of deep Earth materials, natural observation, and theoretical modeling within the principal subject areas of “Early Earth” research...

stable pile depth in the Snowy River study (SKM 2005) is outlined. The inputs used in the run of the LLP99 model were: • single soil layer, • very high flexural stiffness of pile (1,000,000 kN/m). • pile width = 0.3 m (i.e. wooden pile), • shear strength in the absence of lateral stress (for unconsolidated sand 150 kN/m was used), • effective unit weight of soil (15 kN/m), • active lateral effe...

A soil nailing system is a proven effective and economic method used to stabilize earth slopes from the external (factors increasing shear stress) internal decreasing material strength) failure causes. The laboratory models with scales of 1:10 are study behavior nailed slope different building foundation parameters. consist Perspex strips as facing steel bars increase stability slope. sand beds...

In this paper, the use of geotechnical centrifuge and numerical modeling techniques to investigate influence geogrid reinforcement EPS interlayer on lateral earth pressure backfill surface settlements behind gravity abutment pile-supported is reported. According principle equal strain, back structure, foundation, material, grid material were simulated, centrifugal model test for two types abutm...

The paper discussed the preparation of rare earth europium complexes ultraviolet rays (UV) photochromic ink and the influences of factors, such as europium complexes using a rare earth ternary complex of Eu ion with 3-benzoylbenzoic acid and phenathrolinephen [Eu(BA)3Phen] content upon printing ink formula. In the experiment, we utilized fluorescence spectrophotometer to make quantitative deter...