In this study, HA is superplastically embedded into Titanium substrate and the sample is subsequently deformed superplastically until 70% deformation degree. The former process is termed as superplastic embedment (SPE) while the later as superplastic deformation (SPD). After the SPE, HA is successfully embedded into the substrate, forming a layer with a thickness of about 249 nm. After the SPD ...

In an attempt to shape the development of nanotechnologies, ethics policy programs promote engagement in the hope of broadening the scope of considerations that scientists and engineers take into account. While enhancing the reflexivity of scientists theoretically implies changes in technoscientific practice, few empirical studies demonstrate such effects. To investigate the real-time effects o...

We conducted an integrated geomechanics case study of the Woodford shale to understand the effectiveness of multi-stage hydraulic fracturing. The study involves two parallel horizontal wells, each about 5,000 feet long with ~15 frac stages. Analysis of Instantaneous Shut-In Pressure (ISIP) of each frac stage indicates significant variations of the minimum horizontal principal stress (Shmin) mag...

Prior to rotary coring, a range of soft-sediment coring tools were deployed to recover the sediment-water interface and the upper few metres of strata, whose integrity was threatened by embedment of the sea riser for drilling of the ANDRILL (AND)-1A/1B holes. These coring options included (1) a sediment gravity corer deployed through the ice-shelf hole, and (2) a push corer deployed through the...

A jack-up structure is a bottom-mounted floating unit having an adjustable hull and movable legs. Particular structures are more susceptible to hazards under environmental loads during their operation life cycle in the ocean. Authors' attempts here enhance its sustainability shallow deep waters by correctly accessing soil behaviour predicting load carrying capacity. Here numerical analysis of s...