Results 31 to 40 of about 128,356 (215)

Slurry infiltration tests for slurry shield tunnelling in saturated sand [PDF]

open access: yes, 2016
Tunnelling in saturated sand will cause excess pore pressures in the sand. This was the case during the construction of all tunnels in the Netherlands. This excess pore pressure influences the stability of the tunnel face.
Bezuijen, Adam, XU, T
core   +1 more source

Forage herbs improve mineral composition of grassland herbage [PDF]

open access: yes, 2011
Provision of an adequate mineral supply in the diets of ruminants fed mainly on grassland herbage can present a challenge if mineral concentrations are suboptimal for animal nutrition.
Eriksen, Jørgen   +6 more
core   +1 more source

Effect of concentrated brine on coal slurry stability and sedimentation

open access: yes矿业科学学报, 2020
In order to solve the problem of comprehensive utilization of concentrated brine in coal chemical industry, the flocculating settlement test was carried out by using concentrated brine instead of coagulant in coal chemical industry, and the effect of pH ...
Xu Hongxiang   +5 more
doaj   +1 more source

Dynamic modeling of air cushion chambers in large-diameter slurry shields: A case study

open access: yesAlexandria Engineering Journal
In the context of large-diameter slurry shield tunneling, the stability of the excavation face and the safety of construction operations are critically influenced by the dynamic interaction between slurry and air within the air cushion chamber.
Bowen Cai   +3 more
doaj   +1 more source

Microstructural characterisation and thermal stability of an Mg-Al-Sr alloy prepared by rheo-diecasting [PDF]

open access: yes, 2007
A commercial Mg-6Al-2Sr (AJ62) alloy has been prepared by a semisolid rheo-diecasting (RDC) process. The microstructure of the RDC alloy exhibits typical semisolid solidification features, i.e., 8.4 vol% primary α-Mg globules (23 μm in diameter), formed ...
Fan, Z, Liu, G, Wang, F, Wang, Y
core  

Effect of Anionic Polyacrylamide on the Structural Stability of Thickened Tailings Slurry in Pipeline Transportation

open access: yesAdvances in Materials Science and Engineering, 2018
Taking the superfine tailings slurry (STS), fine tailings slurry (FTS), and unclassified tailings slurry (UTS) of a gold mine as examples, a series of laboratory shear tests were conducted to investigate the effect of anionic polyacrylamide (APAM) on the
Shi Wang   +5 more
doaj   +1 more source

Utilization of concrete slurry waste for soil stabilization

open access: yesCase Studies in Construction Materials, 2022
The stabilization of clay soils is one of the crucial problems of engineering, because it determines the long-term stability and operability of structures, especially in case of infrastructure. Present work is focused on the experimental investigation of the utilization of concrete slurry waste (CSW), which is generated during ready-mix concrete ...
Pavel Reiterman   +4 more
openaire   +2 more sources

Einfluss von Fruchtfolgen zur Biomasseproduktion und Gärreste-Düngung auf Bodenstruktur und mikrobielle Aktivität [PDF]

open access: yes, 2015
In a field experiment with five different main crop rotations and fives subtypes for organic biogas systems, aggregate stability, organic carbon, total nitrogen and catalase were evaluated in the topsoil layer in spring 2010, 2011 and 2013 in a winter ...
Bauer, Simon   +6 more
core  

Investigation on the Transition Criterion of Smooth Stratified Flow to Other Flow Patterns for Gas-Hydrate Slurry Flow

open access: yesInternational Journal of Chemical Engineering, 2017
A stability criterion for gas-hydrate slurry stratified flow was developed. The model was based on one-dimensional gas-liquid two-fluid model and perturbation method, considering unstable factors including shear stress, gravity, and surface tension.
Bohui Shi   +5 more
doaj   +1 more source

A study on structure improvement scheme of electromagnetic flow sensor for slurry flow measurement

open access: yesMeasurement + Control, 2022
A scheme to improve the structure of electromagnetic flow sensor is put forward in this paper, which can effectively solve the slurry noise problem when electromagnetic flowmeter measures slurry fluid.
Song Gao, Hao Ma
doaj   +1 more source

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