The nucleus holds and protects the genetic information of a cell. Nuclear positioning is correlated with several important cellular processes, such as cell division, migration and differentiation, and it is essential to the development of organisms ranging from worms to positioning is mediated through a protein complex across the nuclear envelope (NE), formed by the outer nuclear membrane (ONM)...

The hippocampal formation is known to be critical for spatial cognition, for example, regulating the learning of environmental maps. But how is a spatial map learned, and what is the role of the hippocampal formation in the learning process? The sun compass is perhaps the most ubiquitous, naturally occurring spatial orientation mechanism found in the animal kingdom. The sun compass may also ser...

A wide swath of North America was reminded during last summer’s eclipse that you can’t stare at the sun without protection. But to study the sun, space probes have to do much more than stare. They have to get extremely close to the sun’s unforgiving environs. Next year, two solar missions will do exactly that— traveling tens of millions of miles to study the sun’s outer atmosphere, its corona, ...

With the current increased widespread interest in the development and applications of micro/nanosatellites, it was found that we needed to design a small high accuracy satellite attitude determination system, because the star trackers widely used in large satellites are large and heavy, and therefore not suitable for installation on micro/nanosatellites. A Sun sensor + magnetometer is proven to...

White-light measurements made by the SOHO LASCO C2 and C3 coronagraphs and the Mk III Mauna Loa K-coronameter, ranging from 1.15 to 30 have been combined with Kitt Peak daily He I R _ , 1083 nm coronal hole maps, and full Sun Y ohkoh soft X-ray images, to show that the boundaries of polar coronal holes, as determined by measurements of path-integrated density, extend approximately radially into...

The facial skin tone of two groups of Chinese women from Shanghai was compared using standard colorimetric space techniques during a 6-month interval between January and July 2011. During the study period, one group of women (n = 40) applied a potent sun-protective cosmetic product daily, while the other group (n = 40) did not use any sun protection. The results, based on images taken using a s...

We introduce Transient Blocking Synchronization (TBS), a new approach to hardware synchronization for mega-scale distributed-memory multiprocessor machines. Such machines, with thousands of processors and controller based memory modules, are essentially distributed networks, and one must search for new paradigms that provide hardware synchronization support with high levels of robustness and mi...

Context. Total solar irradiance allows for the use of Sun as a star studying observations stellar light curves from recent space missions.