Pressure-enhanced ortho-para conversion in solid hydrogen up to 58 GPa

We measured the ortho-para conversion rate in solid hydrogen by using Raman scattering in a diamond-anvil cell, extending previous measurements by a factor of 60 in pressure. We confirm previous experiments that suggested a decrease in the conversion rate above about 0.5 GPa. We observe a distinct minimum at 3 GPa followed by a drastic increase in the conversion rate to our maximum pressure of 58 GPa. This pressure enhancement of conversion is not predicted by previous theoretical treatments and must be due to a new conversion pathway.

Boston, Massachusetts Region 1:5,000 Color Ortho Imagery (1/2-meter Resolution), 2001

1/2-meter resolution 1:5,000 orthophoto image of the Boston region from April 2001. This datalayer is a subset (covering only the Boston region) of the Massachusetts statewide orthophoto image series available from MassGIS. It consists of 23 orthophoto quads mosaicked together (MassGIS orthophoto quad ID: 229890, 229894, 229898, 229902, 233886, 233890, 233894, 233898, 233902, 233906, 233910, 237890, 237894, 237898, 237902, 237906, 237910, 241890, 241894, 241898, 241902, 245898, 245902). These medium resolution true color images are considered the new "basemap" for the Commonwealth by MassGIS and the Executive Office of Environmental Affairs (EOEA). MassGIS/EOEA and the Massachusetts Highway Department jointly funded the project. The photography for the mainland was captured in April 2001 when deciduous trees were mostly bare and the ground was generally free of snow. The geographic extent of this dataset is the same as that of the MassGIS dataset: Boston, Massachusetts Region LIDAR First Return Elevation Data, 2002 [see cross references].

Uber die Einwirkung von Kohlensaure und metallischem Naturium auf Antipyrin und uber das Ortho-Tolyl-Thiopyrin.

Thesis (doctoral)--Universitat Rostock.

Ueber die Ortho-Derivate des Mono- und Dialkylanilins.

Thesis (doctoral)--Universitat Basel.

Para-methyl-ortho-benzylbenzoesaure und einige Derivate derselben /

Thesis (doctoral)--Universitat Greifswald, 1898.

Uber 1-Ortho und Paratolyl-3-Methyl-5-Aminopyrazol und die entsprechenden Iminopyrine /

Thesis (doctoral)--Universitat Rostock, 1906.

Ueber die Reduction des Ortho-, meta- und para-Toluolazometakresetols /

Thesis (doctoral)--Ruprecht-Karls-Universitat zu Heidelberg, 1894.

Ueber die einwirkung von ortho-anisidin auf bromathylphtalimid.

Thesis (doctoral)--

Over de nitratie van toluol en van ortho- en para-chloortoluol.

Thesis (doctoral)--Universiteit van Amsterdam.