Abstract: Techniques for testing subterranean water for one or more radioactive isotopes for a hazardous waste material repository include collecting, from a test drillhole formed from a terranean surface to a subterranean formation, a subterranean water sample from the subterranean formation; determining, with an accelerator mass spectrometry (AMS) system, a concentration of a radioactive isotope of an element in the subterranean water sample relative to a stable isotope of the element in the subterranean water sample; comparing the determined concentration of the radioactive isotope of the element in the subterranean water sample with a concentration of the radioactive isotope of the element in a surface water sample relative to the stable isotope of the element in the surface water sample; and based on the determined concentration of the radioactive isotope in the subterranean water sample being a specified percentage of the concentration of the radioactive isotope in the surface water sample, determining that the s

Abstract: Techniques for testing subterranean water for one or more radioactive isotopes for a hazardous waste material repository include collecting, from a test drillhole formed from a terranean surface to a subterranean formation, a subterranean water sample from the subterranean formation; determining, with an accelerator mass spectrometry (AMS) system, a concentration of a radioactive isotope of an element in the subterranean water sample relative to a stable isotope of the element in the subterranean water sample; comparing the determined concentration of the radioactive isotope of the element in the subterranean water sample with a concentration of the radioactive isotope of the element in a surface water sample relative to the stable isotope of the element in the surface water sample; and based on the determined concentration of the radioactive isotope in the subterranean water sample being a specified percentage of the concentration of the radioactive isotope in the surface water sample, determining that the s

Abstract: A hazardous material storage repository includes a drillhole extending into the Earth and including an entry at least proximate a terranean surface, the drillhole including a substantially vertical drillhole portion, a transition drillhole portion coupled to the substantially vertical drillhole portion, and a hazardous material storage drillhole portion, at least one of the transition drillhole portion or the hazardous material storage drillhole portion including an isolation drillhole portion; a storage canister positioned in the hazardous material storage drillhole portion, the storage canister sized to fit from the drillhole entry through the substantially vertical drillhole portion, the transition drillhole portion, and into the hazardous material storage drillhole portion of the drillhole, the storage canister including an inner cavity sized enclose hazardous material; and a seal positioned in the drillhole, the seal isolating the hazardous material storage drillhole portion of the drillhole from the ent

Abstract: A hazardous material storage repository includes a drillhole extending into the Earth and including an entry at least proximate a terranean surface, the drillhole including a substantially vertical drillhole portion, a transition drillhole portion coupled to the substantially vertical drillhole portion, and a hazardous material storage drillhole portion, at least one of the transition drillhole portion or the hazardous material storage drillhole portion including an isolation drillhole portion; a storage canister positioned in the hazardous material storage drillhole portion, the storage canister sized to fit from the drillhole entry through the substantially vertical drillhole portion, the transition drillhole portion, and into the hazardous material storage drillhole portion of the drillhole, the storage canister including an inner cavity sized enclose hazardous material; and a seal positioned in the drillhole, the seal isolating the hazardous material storage drillhole portion of the drillhole from the ent

Abstract: A hazardous material storage bank includes a wellbore extending into the Earth and including an entry at least proximate a terranean surface, the wellbore including a substantially vertical portion, a transition portion, and a substantially horizontal portion; a storage area coupled to the substantially horizontal portion of the well bore, the storage area within or below a shale formation, the storage area vertically isolated, by the shale formation, from a subterranean zone that includes mobile water; a storage container positioned in the storage area, the storage container sized to fit from the wellbore entry through the substantially vertical, the transition, and the substantially horizontal portions of the wellbore, and into the storage area, the storage container including an inner cavity sized enclose hazardous material; and a seal positioned in the wellbore, the seal isolating the storage portion of the wellbore from the entry of the wellbore.

Abstract: A cooling system for perishable items.

Abstract: A cooling system for perishable items.

Abstract: A cooling system for perishable items.

Abstract: An air purification apparatus is disclosed that includes a HEPA or ULPA cartridge filter having mounted axially therein an UV lamp extending from a closed end of the cartridge. An air channeling housing is provided for removably mounting the combination filter and lamp assembly for ingress of an air stream through the open end of the combination filter and lamp assembly and for egress of the air stream through the filter medium. A fan can be mounted in the housing either upstream or downstream of the combination filter to provide the means for flowing air through the housing for decontamination by both the filter and UV irradiation provided by the combination filter and lamp assembly. With this arrangement, all contaminants trapped on the filter are within the combination filter and lamp assembly for constant illumination by the UV lamp to destroy bacteria both in the incoming air stream and while resident on the interior of the filter assembly.

Abstract: An air purification apparatus is disclosed that includes a HEPA or ULPA cartridge filter having mounted axially therein an UV lamp extending from a closed end of the cartridge. An air channeling housing is provided for removably mounting the combination filter and lamp assembly for ingress of an air stream through the open end of the combination filter and lamp assembly and for egress of the air stream through the filter medium. A fan can be mounted in the housing either upstream or downstream of the combination filter to provide the means for flowing air through the housing for decontamination by both the filter and UV irradiation provided by the combination filter and lamp assembly. With this arrangement, all contaminants trapped on the filter are within the combination filter and lamp assembly for constant illumination by the UV lamp to destroy bacteria both in the incoming air stream and while resident on the interior of the filter assembly.

Abstract: A high bandwidth telephone line transceiver for connecting telecommunications equipment to a telephone line provides a pair of isolation capacitors connected to the telephone line to transmit the telephone signals across the requisite electrical isolation barrier. The capacitors are connected to a user-side hybrid circuit that provides a line impedance match for the telephone circuit, and converts the two wire connection to the capacitors to a 4 wire circuit for separate transmit and receive signal paths. The receive signal path extends through a signal op amp to a high pass filter that transmits the DSL download bandwidth and rejects the upload bandwidth and voice spectrum. The received signal is then fed to an analog/digital converter, and the digitized signal is connected to a DSP. The DSP is connected to a data handling device via a USB port, a PCI interface, or the like. The transmit signal path extends from the DSP circuit to a transmit path digital/analog converter.

Abstract: A multi-capacitor device having a plurality of capacitors in a single circuit package is formed of a plurality of layers of dielectric material, preferably the same type of material that is commonly used to fabricate circuit boards. The plurality of layers are disposed in a vertically stacked relationship. Each capacitor is formed of first and second pluralities of planar electrodes formed on alternating layers of the stack. The first plurality of electrodes is disposed in a first vertically stacked array, and the second plurality of electrodes is disposed in a second vertically stacked array. Each vertical electrode array is provided with a via hole extending through all of its layers to connect all of the respective electrode array in parallel. At the upper surface of the assembly, each via hole is connected to a solder pad and disposed to be soldered to a connection point on a printed circuit board or the like.

Abstract: Air purification or filtration unit having a triangular housing, with the open front face being the hypotenuse of the triangle. The unit is particularly adaptable for use with conventional sized high efficiency particulate air, or HEPA filters and low penetration air, or ULPA filters, to create a highly filtered clean air environment. The unit includes a circulating fan within the housing to draw air through the filters and housing and to exhaust the air through the top housing wall for recirculation, and can also be ducted to exhaust filtered air from the environment, either in whole or in part. A germicidal ultra violet light may be placed within the housing for additional air purification.