A technique is described by which an effective stabilisation of the apical introducer sheath is achieved by a pneumatic holding arm, during transapical aortic valve implantation procedure.

BACKGROUND AND PURPOSE Thoracoscopic-assisted ventral stabilisation for thoracolumbar fractures has been shown to be associated with decreased recovery time and less morbidity when compared with open procedures. However, there are a limited number of studies evaluating late clinical and radiological results after thoracoscopic spinal surgery. METHODS We performed an analysis of the late outco...

Regionalised activation of canonical Wnt signalling via beta-catenin stabilisation is a key early step in embryonic patterning in many metazoans, including the basally diverging cnidarians, but the upstream maternal cues appear surprisingly variable. In Clytia, regionalised beta-catenin stabilisation defining a presumptive 'oral' territory is determined by two maternally coded Frizzled family W...

BACKGROUND Colorectal crypts are clonal units in which somatic mutation of marker genes in stem cells leads to crypt restricted phenotypic conversion initially involving part of the crypt, later the whole crypt. Studies in mice show that the time taken for the great majority of mutated crypts to be completely converted, the clonal stabilisation time, is four weeks in the colon and 21 weeks in t...

It is recognized that microorganisms inhabiting natural sediments significantly mediate the erosive response of the bed ("ecosystem engineers") through the secretion of naturally adhesive organic material (EPS: extracellular polymeric substances). However, little is known about the individual engineering capability of the main biofilm components (heterotrophic bacteria and autotrophic microalga...

BACKGROUND Pelvic fractures can cause massive haemorrhage. Early stabilisation and compression of unstable fractures is thought to limit blood loss. Reposition of fracture parts and reduction of pelvic volume may provide haemorrhage control. Several non-invasive techniques for early stabilisation have been proposed, like the specifically designed pelvic circumferential compression devices (PCCD...

Better chemical removal in waste stabilisation ponds was linked to the presence of a maturation pond, higher solar irradiation, and warmer temperatures.

Objective: This is a prospective evaluation of chest wall integrity and pulmonary function in patients with operative stabilisation for ̄ail chest injuries. Methods: From 1990 to 1999, 66 patients (56 men, 10 women; mean age 52.6 years) with antero-lateral ̄ail chest ($4 ribs fractured at $2 sites) underwent surgical stabilisation using reconstruction plates. Clinical assessment and pulmonary f...

Due to its recalcitrance against microbial degradation, biochar is very stable in soil compared to other organic matter additions, making its application to soils a suitable approach for the build-up of soil organic carbon (SOC). The net effects of such biochar addition also depend on its interactions with existing organic matter in soils. A study was established to investigate how the status o...