Abstract: The present invention pertains to a dry cement formulation for cementing earth boreholes, in particular oil, gas and/or terrestrial heat boreholes, containing a) about 20 to 99.9 wt. % cement, b) about 0 to 65 wt. % powdered quartz/or quartz dust, c) about 0.1 to 30 wt. % water-redispersible dispersion powder, and d) about 0 to 20 wt. % further additives. Furthermore, the invention pertains to the use of the dry cement formulation for preparing a cement slurry as well as to the use of water-redispersible dispersion powders in a cement slurry for cementing earth boreholes, wherein the cement slurries can be used for reducing the water loss of the cement slurry, for reducing the gas and/or water penetration and/or for sealing off the gas and/or water channels by means of the cement slurry which has been introduced into the borehole and has set.

Abstract: A vehicle including at least one glass pane, bodywork, and at least one layer of viscoelastic material interposed between the glass pane and the bodywork.

Abstract: A vehicle including at least one glass pane, bodywork, and at least one layer of viscoelastic material interposed between the glass pane and the bodywork.

Abstract: An adjustable illumination apparatus includes an illumination source having a housing carrying an illuminatable element. A mount is adapted to surround an imaging system lens. An extensible and retractable support has first and second ends mounts the illumination source to the mount. First and second connections movably couple the first and second ends of the support to the mount and the illumination source. The support includes one or more telescoping legs or a cross link bar assembly. In one aspect, the apparatus includes multiple illumination sources. The connections allow each illumination source to be independently positioned relative to other illumination sources. The illuminatable elements in each illumination source may be independently controlled.

Abstract: The present invention pertains to a dry cement formulation for cementing earth boreholes, in particular oil, gas and/or terrestrial heat boreholes, containing a) about 20 to 99.9 wt. % cement, b) about 0 to 65 wt. % powdered quartz/or quartz dust, c) about 0.1 to 30 wt. % water-redispersible dispersion powder, and d) about 0 to 20 wt. % further additives. Furthermore, the invention pertains to the use of the dry cement formulation for preparing a cement slurry as well as to the use of water-redispersible dispersion powders in a cement slurry for cementing earth boreholes, wherein the cement slurries can be used for reducing the water loss of the cement slurry, for reducing the gas and/or water penetration and/or for sealing off the gas and/or water channels by means of the cement slurry which has been introduced into the borehole and has set.

Abstract: An adjustable illumination apparatus includes an illumination source having a housing carrying an illuminatable element. A mount is adapted to surround an imaging system lens. An extensible and retractable support has first and second ends mounts the illumination source to the mount. First and second connections movably couple the first and second ends of the support to the mount and the illumination source. The support includes one or more telescoping legs or a cross link bar assembly. In one aspect, the apparatus includes multiple illumination sources. The connections allow each illumination source to be independently positioned relative to other illumination sources. The illuminatable elements in each illumination source may be independently controlled.

Abstract: A method, apparatus, and electronic device for determining a location of a mobile device are disclosed. A receiver may asynchronously receive an access signal from at least three access points of a wireless local area network with the mobile device. A processor may measure an access signal strength for the access signal for each access point. A transmitter may transmit the access signal strengths to a location server to determine the location of the mobile device.