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in creator/contributor: "GELLER,J."

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Laboratory studies of groundwater degassing in replicas of natural fractured rock for linear flow geometry

Laboratory experiments to simulate two-phase (gas and water) flow in fractured rock evolving from groundwater degassing were conducted in transparent replicas of natural rock fractures. These experiments extend the work by Geller et al. (1995) and Jarsjo and Geller (1996) that tests the hypothesis that groundwater degassing caused observed flow reductions in the Stripa Simulated Drift Experiment (SDE). Understanding degassing effects over a range of gas contents is needed due to the uncertainty… more

Date: February 1, 1998

Creator: Geller, J. T.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Degassing and two-phase flow pilot hole test report

A pilot hole test was conducted to support the design of the Degassing of Groundwater and Two-Phase Flow experiments planned for the Hard Rock Laboratory, Aespoe, Sweden. The test consisted of a sequence of constant pressure borehole inflow tests (CPTs) and pressure recovery tests (PRTs) in borehole KA2512A. The test sequence was designed to detect degassing effects from the change in transmissivity, or hydraulic conductivity, and storativity when the borehole pressure is lowered below the grou… more

Date: March 1, 1995

Creator: Geller, J. T. & Jarsjoe, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Two-phase flow in regionally saturated fractured rock near excavations

Hydrologic characterization for potential nuclear waste repositories relies upon data obtained from testing in excavations. The Simulated Drift Experiment in the Stripa Mine in Sweden, a fractured granitic formation below the water table, investigated excavation effects on hydrologic response. Measured water inflow to the drift at atmospheric pressure was nine times less than the value predicted from the inflow to boreholes with pressure held at 2.7 bars. This flow reduction may be due to disso… more

Date: November 1, 1994

Creator: Geller, J. T.; Doughty, C. & Long, J. C. S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Disturbed zone effects: Two phase flow in regionally water-saturated fractured rock

Field evidence suggests that two-phase flow may develop near underground excavations in regionally-saturated fractured crystalline rock, resulting in lower inflow rates compared to undisturbed rock. Mechanisms for the development of two-phase flow conditions include depressurization of formation water that is supersaturated with dissolved gas and buoyancy-driven air invasion into fractures from the drift. Models that assume gas-liquid phase equilibrium indicate that for constant head boundary c… more

Date: January 1, 1995

Creator: Geller, J. T.; Doughty, C. & Long, J. C. S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Failure Analysis of Mark 1A Lithium/Iron Sulfide Battery

The Mark 1A lithium/iron sulfide electric-vehicle battery, which consisted of two 20-kW-hr modules containing 60 cells each, was fabricated by Eagle-Picher Industries, Inc. and delivered to ANL for testing in May 1979. During startup heating prior to electrical testing, a short circuit developed in one of the modules, which resulted in a progressive failure of the cells. The other module, which was alongside and connected in series, was unaffected by the failure. The initial indication of diffi… more

Date: October 1980

Creator: Kolba, V. M.; Battles, J. E.; Geller, J. D. & Gentry, K.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Preliminary studies of water seepage through rough-walled fractures

For groundwater aquifers in fractured rock, fractures play a significant role in the transport of water and contaminants through the unsaturated zone to the groundwater table. Fractures can provide preferential flow paths for infiltrating liquids that dramatically accelerate contaminant transport compared to predictions based upon spatially uniform infiltration. The actual liquid distribution during infiltration determines the contact area between the flowing water and rock, and liquid residenc… more

Date: July 1, 1996

Creator: Geller, J. T.; Su, G. & Pruess, K.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Pressure measurements in the AGS Booster ultra-high vacuum system

An average pressure of mid 10{sup {minus}11} Torr has been achieved and maintained in the AGS Booster ring vacuum system during its first year of operation. This ultra-high vacuum system is monitored through remote controlled Bayard-Alpert Gauges (BAGs). The characteristics of the pressure measurements with BAGs over the long cable lengths (up to 200 m) and under various accelerator operating conditions will be described. Two types of noise in the pressure readouts have been identified; the ele… more

Date: January 1, 1992

Creator: Gabusi, J.; Geller, J.; Hseuh, H. C.; Mapes, M. & Stattel, P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Pressure measurements in the AGS Booster ultra-high vacuum system

Date: October 1, 1992

Creator: Gabusi, J.; Geller, J.; Hseuh, H. C.; Mapes, M. & Stattel, P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Processes controlling the migration and biodegradation of Non-aqueous phase liquids (NAPLs) within fractured rocks in the vadose zone FY97 annual report

Subsurface contamination from volatile organic compounds (VOCs) has been found at many Department of Energy (DOE), Department of Defense (DoD) and industrial sites due to the widespread use of organic solvents and hydrocarbon fuels. At ambient pressures and temperatures in the shallow subsurface, these substances are liquids that are immiscible with water; hence they are commonly designated as non-aqueous phase liquids (NAPLs). At some DOE sites, NAPLs are the presumed source of groundwater con… more

Date: February 1, 1998

Creator: Geller, J. T.; Holman, Hoi-Ying & Conrad, M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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RHIC Beam Loss Monitor System Initial Operation.

The RHIC Beam Loss Monitor (BLM) System is designed to prevent beam loss quenching of the superconducting magnets, and acquire loss data. Four hundred ion chambers are located around the rings to detect losses. The required 8-decade range in signal current is compressed using an RC pre- integrator ahead of a low current amplifier. A beam abort may be triggered if fast or slow losses exceed programmable threshold levels. A micro-controller based VME module sets references and gains and reads tri… more

Date: March 29, 1999

Creator: Witkover, R. L.; Michnoff, R. J. & Geller, J. M.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Operational status of the AGS Booster Main Ring Magnet Power Supply

The Booster is a multipurpose accelerator interposed between a 200 MeV linac, a pair of 15 MV Tandem Van deGraaf accelerators, and the AGS. It can operate on slow cycles of 0.3 Hertz pulse repetition frequency up to a maximum of 7.5 Hertz. The different cycles, from long front porches for long injection or accumulation periods or flattops for slow extraction, to normal fast extraction cycles, accommodate protons, heavy ions (h.i.) and polarized protons. One of the systems enabling the flexible … more

Date: September 1, 1992

Creator: Soukas, A.; Bannon, M.; Geller, J.; McNerney, A. J.; Sandberg, J.; Toldo, F. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Operational status of the AGS Booster Main Ring Magnet Power Supply

Date: January 1, 1992

Creator: Soukas, A.; Bannon, M.; Geller, J.; McNerney, A. J.; Sandberg, J.; Toldo, F. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Instrumentation and control of the AGS Booster vacuum system

The AGS Booster is a synchrotron for the acceleration of both protons and heavy ions. A pressure of low 10{sup {minus}11} Torr is required for the acceleration of the partially stripped, low {Beta}, very heavy ions. This paper describes the power supplies and controls for this ultra-high vacuum system with the emphasis on the operation of the ion gauge system over long cable length and on equipment interlock 4 refs., 2 figs., 1 tab.

Date: January 1, 1991

Creator: Gabusi, J.; Geller, J.; Hseuh, H. C.; Rosas, P.; Sandburg, J.; Shen, B. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Mapping DNAPL transport contamination in sedimentary and fractured rock aquifers with high resolution borehole seismic imaging Project No. SF11SS13 FY01 Annual Report

This report covers the work performed in the first year of a three-year project funded by the USDOE's Subsurface Contaminant Focus Area (SCFA). The objectives of this project are to develop, demonstrate and evaluate, at appropriate field sites, the utility of high frequency seismic imaging methods to detect and characterize non-aqueous phase liquid (NAPL) contamination in sedimentary and fractured rock aquifers. Field tests consist of crosswell seismic tomography acquired before, during and aft… more

Date: December 1, 2001

Creator: Geller, J. T.; Majer, E. L.; Peterson, J. E.; Williams, K. H. & Flexser, S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Control and Performance of the AGS and AGS Booster Main Magnet Power Supplies

Techniques for precision control of the main magnet power supplies for the AGS and AGS Booster synchrotron will be discussed. Both synchrotrons are designed to operate in a Pulse-to-Pulse Modulation (PPM) environment with a Supercycle Generator defining and distributing global timing events for the AGS Facility. Details of modelling, real-time feedback and feedforward systems, generation and distribution of real time field data, operational parameters and an overview of performance for both mac… more

Date: January 1, 1993

Creator: Reece, R. K.; Casella, R.; Culwick, B.; Geller, J.; Marneris, I.; Sandberg, J. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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Control and performance of the AGS and AGS Booster Main Magnet Power Supplies

Date: June 1, 1993

Creator: Reece, R. K.; Casella, R.; Culwick, B.; Geller, J.; Marneris, I.; Sandberg, J. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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A chaotic-dynamical conceptual model to describe fluid flow and contaminant transport in a fractured vadose zone. 1997 progress report and presentations at the annual meeting, Ernest Orlando Lawrence Berkeley National Laboratory, December 3--4, 1997

Understanding subsurface flow and transport processes is critical for effective assessment, decision-making, and remediation activities for contaminated sites. However, for fluid flow and contaminant transport through fractured vadose zones, traditional hydrogeological approaches are often found to be inadequate. In this project, the authors examine flow and transport through a fractured vadose zone as a deterministic chaotic dynamical process, and develop a model of it in these terms. Initiall… more

Date: July 1, 1998

Creator: Faybishenko, B.; Doughty, C. & Geller, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Processes controlling the migration and biodegradation of non-aqueous phase liquids (NAPLs) within fractured rocks in the vadose zone. FY96 annual report

This project investigates both flow dynamics and microbial processes affecting NAPLs in fractured rock in a closely coupled, integrated manner. The objective is to develop a qualitative and quantitative understanding of the behavior of two and three immiscible fluid phases, microbial transformation and/or degradation, and to provide a scientific basis for field investigations, site characterization, and remedial action for NAPL contamination in fractured rocks. To achieve this, the program comb… more

Date: February 1, 1997

Creator: Geller, J. T.; Holman, H. Y.; Conrad, M.; Pruess, K.; Hunter-Cevera, J. C. & Su, G.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Flow dynamics and potential for Biodegradation of Organic Contaminants in Fractured Rock Vadose Zones

We present an experimental approach for investigating the potential for bioremediation of volatile organic chemicals (VOCs) in fractured-rock vadose zones. This approach is based on the coupling of fluid flow dynamics and biotransformation processes. Fluid flow and distribution within fracture networks may be a significant factor in the ability of microorganisms to degrade VOCs, as they affect the availability of substrate, moisture and nutrients. Biological activity can change liquid surface t… more

Date: December 1, 1998

Creator: Geller, J. T.; Holman, H. -Y.; Su, T. -S.; Liou, M.S.; Conrad, M. S.; Pruess, K. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Cell wide responses to low oxygen exposure in Desulfovibriovulgaris Hildenborough

The responses of the anaerobic, sulfate-reducing Desulfovibrio vulgaris Hildenborough to low oxygen exposure (0.1% O{sub 2}) were monitored via transcriptomics and proteomics. Exposure to 0.1% O{sub 2} caused a decrease in growth rate without affecting viability. A concerted up regulation in the predicted peroxide stress response regulon (PerR) genes was observed in response to the 0.1% O{sub 2} exposure. Several of these candidates also showed increases in protein abundance. Among the remainin… more

Date: March 11, 2007

Creator: Mukhopadhyay, A.; Redding, A.; Joachimiak, M.; Arkin, A.; Borglin, S.; Dehal, P. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Subcellular localization of proteins in the anaerobic sulfate reducer Desulfovibrio vulgaris via SNAP-tag labeling and photoconversion

Systems Biology studies the temporal and spatial 3D distribution of macromolecular complexes with the aim that such knowledge will allow more accurate modeling of biological function and will allow mathematical prediction of cellular behavior. However, in order to accomplish accurate modeling precise knowledge of spatial 3D organization and distribution inside cells is necessary. And while a number of macromolecular complexes may be identified by its 3D structure and molecular characteristics a… more

Date: June 1, 2010

Creator: Gorur, A.; Leung, C. M.; Jorgens, D.; Tauscher, A.; Remis, J. P.; Ball, D. A. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Survey of large protein complexes D. vulgaris reveals great structural diversity

An unbiased survey has been made of the stable, most abundant multi-protein complexes in Desulfovibrio vulgaris Hildenborough (DvH) that are larger than Mr {approx} 400 k. The quaternary structures for 8 of the 16 complexes purified during this work were determined by single-particle reconstruction of negatively stained specimens, a success rate {approx}10 times greater than that of previous 'proteomic' screens. In addition, the subunit compositions and stoichiometries of the remaining complexe… more

Date: August 15, 2009

Creator: Han, B.-G.; Dong, M.; Liu, H.; Camp, L.; Geller, J.; Singer, M. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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The Muon G-2 Storage Ring Magnet

The muon g-2 experiment at Brookhaven National Laboratory has constructed a 7.112m radius superconducting magnet. The design and construction of the storage ring magnet are described.

Date: June 22, 1998

Creator: Lee, Y. Y.; Addessi, L.; Armoza, Z.; Benante, J.; Brown, H. N.; Bunce, G. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

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The partial Siberian snake experiment at the Brookhaven AGS

We are building a 4.7 Tesla-meter room temperature solenoid to be installed in a 10-foot long AGS straight section. This experiment will test the idea of using a partial snake to correct all depolarizing imperfection resonances and also test the feasibility of betatron tune jump in correction intrinsic resonances in the presence of a partial snake.

Date: December 31, 1992

Creator: Huang, H.; Caussyn, D. D.; Ellison, T.; Jones, B.; Lee, S. Y.; Schwandt, P. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department