Results 111 to 120 of about 5,753,745 (253)

Shear-induced material transfer across the core-mantle boundary aided by the post-perovskite phase transition

, 2005
We present a novel mechanical model for the extraction of outer core material upwards across the CMB into the mantle side region of D" and subsequent interaction with the post-perovskite (ppv) phase transition.
Brodholt, John, Petford, Nick; id_orcid, Petford, Nick, Rushmer, Tracy, Yuen, D., Stackhouse, Stephen, Yuen, Dave   +6 more
core   +1 more source

Characterizing Surface Roughness From Pressure-Joint Closure Measurements Using Inversion Procedure [PDF]

, 1991
An inversion procedure has been formulated to estimate the surface roughness of a joint (fracture) from the measured pressure-closure data. A gamma distribution for the local minima (or maxima) on a topography profile was used to account for the ...
Toksoz, M. Nafi, Zhao, Xiaomin
core  

Changes in Lateral Stress During Slurry Trench Wall Installation.

, 1996
PhDThe thesis is concerned with the effects of slurry trenching (diaphragm wall installation) in an overconsolidated clay, with particular emphasis on the changes in lateral stress which occur. A review of the literature on diaphragm wall installation
Page, J.R.T., Page, Jonathan
core  

Passive earth pressure in sand on inclined walls with negative wall friction based on a statically admissible stress field

The problem considered in this paper is the passive earth pressure determination under various rigid wall geometry with negative wall-soil friction. An exact solution based on statically admissible stress fields is employed to evaluate the impact of ...
Nguyen, Tan, Shiau, Jim
core   +1 more source

Solar radiation pressure augmented deorbiting from high altitude sun-synchronous orbits

, 2012
This paper discusses the use of solar radiation pressure (SRP) augmented deorbiting to passively remove small satellites from high altitude Sun-synchronous orbits. SRP-augmented deorbiting works by deploying a light-weight reflective inflatable device to
Colombo, Camilla, McInnes, Colin, Lucking, Charlotte   +2 more
core  

Rare earth element systematics in ancient and modem hydrothermal systems

, 1998
The geochemical significance of on-axis diffuse fluids, in addition to those formed during the waning phases of hydrothermal systems and off-axis crustal ageing processes, has been investigated through a comparison of the rare earth element (REE ...
Wells, D.M.
core  

Research on the simplified calculation method of non-limit active earth pressure of limited soil mass in adjacent foundation pits. [PDF]

PLoS One
Zhang Z, Wang Z, Xu F, Wu F, Liu Z, Chen X, Kang J.   +6 more
europepmc   +1 more source

Orbit design for future SpaceChip swarm missions

, 2010
The effect of solar radiation pressure and atmospheric drag on the orbital dynamics of satellites-on-a-chip (SpaceChips) is exploited to design long-lived orbits about the Earth.
COLOMBO, CAMILLA, Colombo, C., Mcinnes, Colin R., McInnes, C.R.   +3 more
core  

Predictive control of earth pressure balance in shield tunneling using a hybrid learning approach. [PDF]

Sci Rep
Wang Q, Zhang Y, Wei D, Meng J.
europepmc   +1 more source

Research on key technologies of thick slurry filling chamber method for earth pressure balance shield in karst areas. [PDF]

Sci Rep
Huang K, Liu P, Chen X, Sun Y, Qian X, Luo Z, Xing K, Huang B.   +7 more
europepmc   +1 more source