A 24-year-old woman presented with asymptomatic hyperpigmented bilateral patches on her temples, eyelids and forehead since birth. Furthermore, the patient had a congenital grey patch, compatible with Mongolian spot, on her buttock. She had no vascular or other cutaneous lesion. Histopathologic examination revealed bipolar dendritic melanocytes dispersed in a ribbon-like pattern between the col...

Multi-spot optics are applied for process parallelizing if the demand on throughput in mass production rises or large areas of material have to be processed. We investigate the usage of microlens arrays as multifunctional elements for forming an arbitrary shaped laser beam into a spot-, a ring-spotor a line-array pattern. It can be shown that the intensity distribution of each spot is equal to ...

This paper describes a determination of critical gas saturations and relative permeabilities relevant to the depressurisation of two North Sea fields. A series of reservoir condition coreflood experiments and associated numerical simulations is described. Four experiments were conducted with aged cores and fluids and each comprised of a waterflood, followed by depressurisation at different rate...

Abstract The research of the current study is primarily focused on evaluating reservoir performance by utilizing waterflood technique, based a case at Lanea oil field located in Chad; various mechanisms along with approaches were used considering best suitable pattern for waterflooding. All simulation work was compared against base case, where there no involvement water injection. Moreover, sig...

In this paper, we describe an approach to combining a reservoir simulation with 3-D visualization and virtual reality technology. Our prototype VR/visualization system minimizes human-machine interface barriers and provides enhanced control ●Lever 4.:-, ,1-+:AR LIIC allllulatwil, therebjj maximizing scientific judgment and use of intuition. We illustrate the practical advantage of using the VR/...

The high water cut stage is an important of the injection development oilfields because there are still more oil reserves available for recovery in this stage. Most have experienced decades waterflooding and adjustment. Although reservoirs face problems seriously watered-out highly dispersed distribution remaining oil, they remain dominant waterflood development. This paper investigates current...

The dynamical behavior of multi-spot solutions in a two-dimensional domain Ω is analyzed for the two-component Schnakenburg reaction-diffusion model in the singularly perturbed limit of small diffusivity ε for one of the two components. In the limit ε → 0, a quasi-equilibrium spot pattern in the region away from the spots is constructed by representing each localized spot as a logarithmic singu...

This paper examines how hot spots shift by hour of day and day of week. Hot spot analysis is more likely to have a substantial impact on crime patterns if spatiotemporal shifts are incorporated into the crime analysis process. Even in some of the highest crime neighborhoods in Bronx County (NY), not all micro-level geographies (e.g. street segments and property lots) contain substantial (if any...