Abstract. The hydraulic permeability of sea ice is an important property that influences the role in environment many ways. As it difficult to measure, so far not observations exist, and quality deduced empirical relationships between porosity unknown. present work presents a study young based on combination brine extraction centrifuge, X-ray micro-tomographic imaging direct numerical simulatio...

Biocatalytic processes often provide an ecological alternative to many chemical processes. However, further improvements in terms of the economic efficiency are required. In order achieve that, concept process integration is a promising option. Applying this within biocatalytic process, highly integrated apparatus working as reactive extraction centrifuge was developed and operated. For purpose...

Five dynamic, large-scale centrifuge tests on pile-supported wharves were used to investigate the time- and depth-dependent nature of kinematic inertial demands deep foundations during earthquake loading. The wharf structures in physical experiments subjected a suite recorded ground motions imposed superstructure piles. Partial full liquefaction loose sand resulted slope deformations varying ma...

© 2008 American Institute of Physics, S-0031-9228-0809-020-0 The most difficult step in building a nuclear weapon is the production of fissile material. One can either make plutonium-239 in a nuclear reactor or enrich uranium to increase the abundance of its fissile isotope uranium-235. Historically, enrichment has been the more obscure of the two routes, but the recent spread of one technology...

Acoustically centrifuge and extract cells from blood samples using 152-Y-rotated lithium niobate spiral electrodes with an extraction syringe.

AIMS Exposure to artificial gravity (AG) at different G loads and durations on human centrifuges has been shown to improve orthostatic tolerance in men. However, the effects on women and of an individual-specific AG training protocol on tolerance are not known. METHODS We examined the effects of 90 minutes of AG vs. 90 minutes of supine rest on the orthostatic tolerance limit (OTL), using hea...