optimization of drilling fluid parameters such as mud weight, salt concentration, and temperature is essential to alleviate instability problems during drilling through shale sections. the selection of suitable mud parameters can benefit from analyses that consider significant instability processes involved in shale-drilling–fluid interactions. this paper describes the development of analytical...

a terrier came along. Through my binoculars, I saw the lapwing becoming increasingly anxious and, when the intruders were about 200 metres away, the bird ran off to trail a wing in front of them. The restrained dog clearly wanted to chase the injury-feigning bird and, had it been allowed to do so, would have been led well away from the nest. The lapwing's distraction would almost certainly have...

On the 8-9 January 2009 the Refugee Study Centre (RSC) and the International Migration Institute (IMI) of Oxford University convened a two-day workshop on Environmental Change and Displacement, with the support of the UNHCR. Attended by about 50 participants, the conference examined current research evidence on the relationship between climate/environmental change and migration, and the role th...

This paper introduces displacement mapped billboard clouds (DMBBC), a new image-based rendering primitive for the fast display of geometrically complex objects at medium to far distances. The representation is based on the well-known billboard cloud (BBC) technique, which represents an object as several textured rectangles in order to dramatically reduce its geometric complexity. Our new method...

Data from the 1992 wave of the Health and Retirement Study are used to examine the incidence of job displacement among workers ages 51 through 60. The average displaced worker experiences a loss in earnings of 39%. Households which contain a displaced worker have incomes 24% lower than the household of an average worker. Little of these lost earnings are replaced through pension income. The rat...

Quantitative PCR assays are now the standard method for viral diagnostics. These assays must be specific, as well as sensitive, to detect the potentially low starting copy number of viral genomic material. We describe a new technique, polymerase chain displacement reaction (PCDR), which uses multiple nested primers in a rapid, capped, one-tube reaction that increases the sensitivity of normal q...

Displacement mapping was originally created as a rendering tool to provide small-scale modulation of an underlying smooth surface. However, it has now emerged as a sculpting tool, to the extent that complex geometry can effectively be added to a scene at rendering time. The attendant complexity of displacement maps is placing increased demands on rendering systems, from quality, performance, an...

AIM The purpose of the present in vivo study was to measure the efficacy of different gingival displacement materials in achieving gingival tissue displacement and to compare the efficacy of Expasyl displacement paste (Pierre Rolland, France) and gingival displacement cord for gingival displacement. MATERIALS AND METHODS Sixteen subjects were included in the study. Premolars were prepared to ...