Terminology of metal–organic frameworks and coordination polymers (IUPAC Recommendations 2013)

A set of terms, definitions, and recommendations is provided for use in the classification of coordination polymers, networks, and metal–organic frameworks (MOFs). A hierarchical terminology is recommended in which the most general term is coordination polymer. Coordination networks are a subset of coordination polymers and MOFs a further subset of coordination networks. One of the criteria an MOF needs to fulfill is that it contains potential voids, but no physical measurements of porosity or other properties are demanded per se. The use of topology and topology descriptors to enhance the description of crystal structures of MOFs and 3D-coordination polymers is furthermore strongly recommended.

Simulated magnetic field expulsion in neutron star cores

The study of long-term evolution of neutron star (NS) magnetic fields is key to understanding the rich diversity of NS observations, and to unifying their nature despite the different emission mechanisms and observed properties. Such studies in principle permit a deeper understanding of the most important parameters driving their apparent variety, e.g. radio pulsars, magnetars, X-ray dim isolated NSs, gamma-ray pulsars. We describe, for the first time, the results from self-consistent magnetothermal simulations considering not only the effects of the Hall-driven field dissipation in the crust, but also adding a complete set of proposed driving forces in a superconducting core. We emphasize how each of these core-field processes drive magnetic evolution and affect observables, and show that when all forces are considered together in vectorial form, the net expulsion of core magnetic flux is negligible, and will have no observable effect in the crust (consequently in the observed surface emission) on megayear time-scales. Our new simulations suggest that strong magnetic fields in NS cores (and the signatures on the NS surface) will persist long after the crustal magnetic field has evolved and decayed, due to the weak combined effects of dissipation and expulsion in the stellar core.

L’empire vidéoludique : comment les jeux vidéo ont conquis l’univers de Star Wars

Il est difficile de discuter des développements intermédiaux de Star Wars sans évoquer la vision de l'instigateur de cet univers de science-fiction en constante expansion, George Lucas, qui a su mesuer l'importance qu'allait prendre le jeu vidéo (et, plus généralement, le phénomène des produits dérivés). Au-delà des considérations purement économiques,c'est d'abord par fascination personnelle que Lucas vient au 10e art. [...]

Rapid carbon nanotubes suspension in organic solvents using organosilicon polymers

A strategy for a simple dispersion of commercial multi-walled carbon nanotubes (MWCNTs) using two organosilicones, polycarbosilane SMP10 and polysilazane Ceraset PSZ20, in organic solvents such as cyclohexane, tetrahydrofuran (THF), m-xylene and chloroform is presented. In just a few minutes the combined action of sonication and the presence of Pt(0) catalyst is sufficient to obtain a homogeneous suspension, thanks to the rapid hydrosilylation reaction between SiH groups of the polymer and the CNT sidewall. The as-produced suspensions have a particle size distribution <1μm and remain unchanged after several months. A maximum of 0.47 and 0.50mg/ml was achieved, respectively, for Ceraset in THF and SMP10 in chloroform. Possible applications as polymeric and ceramic thin films or aerogels are presented.

Radiation-induced reactions in swollen polymers /

The content was printed on only one side of the paper.

""Star of Life" - emergency medical care symbol: background, specifications, and criteria.

Mode of access: Internet.

Red Star on military affairs, 1945-1952 ; a selected, annotated list of articles in the Soviet military newspaper /

U.S. Air Force Project Rand.

Arne and the Christmas star : a story of Norway /

At home in his village, Arne and his family prayed for the return of the freighter Stjerne, which was fighting against storms at sea in order to get back to the village. It was Christmas season and the Stjerne was the Christmas ship this year. It's mission was to bring gifts to the village. But more important to Arne, his brother Gustave was first mate on that ship and he and his family prayed for his safe return. This is the story of how Arne does his part to help bring the Christmas ship back safely to port.

Lancashire and Cheshire cases in the Court of Star Chamber.

Contains the report of the Record Society for the year 1914-15.

The Star collection of instrumental music; arranged for wind and string instruments, and for the use of small bands and orchestras.

Contains arrangements of songs, selections from operas, dances, etc.

Protecting our environment starts at home : 5 steps you can take to reduce air pollution : Energy Star action guide.

Shipping list no.: 2004-0166-P.

The Mountain Star /

Series title also at head of t.p.

The star of Bethlehem : a list of references /

Mode of access: Internet.

Under the dog-star : a tale of the borders /

Mode of access: Internet.