49 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Organic Acids"  
Results: 1 - 24 next
open access

Mineralogy in the Waste Isolation Pilot Plant (WIPP) facility stratigraphic horizon

Description: Forty-six samples were selected for this study from two cores, one extending 50 ft up through the roof of the WIPP facility and the other penetrating 50 ft below the facility floor. These samples, selected from approximately every other foot of core length, represent the major lithologies present in the immediate vicinity of the WIPP facility horizon: ''clean'' halite, polyhalitic halite, argillaceous halite, and mixed polyhalitic-argillaceous halite. Samples were analyzed for non-NaCl mineralo… more
Date: September 1, 1985
Creator: Stein, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Degradation of cellulosic biomass and its subsequent utilization for the production of chemical feedstocks. Progress report, June 1, 1977--August 31, 1977

Description: Studies on the microbial degradation of cellulose biomass continues to be centered around Clostridium thermocellum. The effect of surfactants on growth and cellulase production by C. thermocellum was investigated. The effect of pH on growth and reducing sugar accumulation rate of Clostridium thermocellum on solka floc was evaluated. Activity of extracellular cellulase of Clostridium thermocellum ATCC 27405 was examined using TNP--CMC and Avicel as substrates. The pH optima are 5 and 4.5, respec… more
Date: September 1, 1977
Creator: Wang, D. I. C.; Cooney, C. L.; Demain, A. L.; Gomez, R. F. & Sinskey, A. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Di-n-amyl-n-amylphosphonate and tricaprylmethylammonium nitrate as potential extractants for reprocessing Th-U fuels

Description: Both 2F di-n-amyl-n-amylphosphonate in n-dodecane (DA(AP)-DD) and 0.77F tricaprylmethylammonium nitrate in Aromatic 100 (TCMA.NO/sub 3/-AR100) extract uranium and thorium into relatively concentrated organic solutions. Countercurrent-flow tests with each extractant have demonstrated effective uranium-thorium separations by selective stripping from the organic phase. Both extractants offer advantageous alternatives to tributylphosphate (Thorex) in reprocessing irradiated mixed ThO/sub 2/-UO/sub … more
Date: September 1, 1979
Creator: Diamond, H.; Sabau, C.S.; Horwitz, E.P.; Vandergrift, G.F. & Mason, G.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Biomedical research with cyclotron produced radionuclides. Progress report, February 1, 1981-December 31, 1981

Description: Progress is reported in the following areas: evaluation of chemotherapeutic regimens in solid tumors using /sup 13/N-labelled amino acids; organ imaging with /sup 13/N-labelled L-amino acids; imaging with /sup 111/In-labelled-autologous platelets; synthesis and biological studies of /sup 111/In-labelled ammonia and L-amino acids; synthesis and evaluation for pancreatic imaging of /sup 11/C-labelled amino acides; radioisotope monitoring of myocardiol function; synthesis of /sup 11/C-labelled pre… more
Date: September 1, 1981
Creator: Laughlin, J.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low level waste treatment by ion-exchange. II. Use of a weak acid, carboxylic-phenolic ion-exchange resin

Description: Laboratory results are presented for a flowsheet study of a process for decontaminating ORNL low level waste water. The water is adjusted to approximately pH 12 with NaOH, clarified, and passed through a bed of phenolic cation exchange resin. This study, using a phenolic-carboxylic resin, showed essentially the same results as those previously reported using a phenolic-sulfonic resin, i.e., radioactivities in ORNL waste were reduced to the order of 10% of MPC. The phenolic-carboxylic resin has … more
Date: September 25, 1961
Creator: Holcomb, R.R. & Roberts, J.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Facile reaction/extraction of coal with supercritical fluids. Quarterly technical progress report, April 1, 1983-June 30, 1983. [In Benzene]

Description: In summary, model studies have provided the following information. An aprotic solvent will be required for both transalkylation and ionic hydrogenation; a non-nucleophilic solvent will be required for ionic hydrogenation; intromolecular reaction will occur in the reactions of phenyl ethers; and in an aromatic solvent, arylation (transalkylation) occurs in preference to ionic hydrogenation. Model studies of the ionic hydrogenation were continued using a copolymer of 1,4-bis(bromomethyl)naphthale… more
Date: September 1, 1983
Creator: Venier, C. G. & Squires, T. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Reactive Distillation for Esterification of Bio-based Organic Acids

Description: The following is the final report of the three year research program to convert organic acids to their ethyl esters using reactive distillation. This report details the complete technical activities of research completed at Michigan State University for the period of October 1, 2003 to September 30, 2006, covering both reactive distillation research and development and the underlying thermodynamic and kinetic data required for successful and rigorous design of reactive distillation esterificati… more
Date: September 23, 2008
Creator: Fields, Nathan; Miller, Dennis J.; Asthana, Navinchandra S.; Kolah, Aspi K.; Vu, Dung & Lira, Carl T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Solvent recycle/recovery

Description: This report describes Phase I of the Solvent Recycle/Recovery Task of the DOE Chlorinated Solvent Substitution Program for the US Air Force by the Idaho National Engineering Laboratory, EG G Idaho, Inc., through the US Department of Energy, Idaho Operations Office. The purpose of the task is to identify and test recovery and recycling technologies for proposed substitution solvents identified by the Biodegradable Solvent Substitution Program and the Alternative Solvents/Technologies for Paint S… more
Date: September 1, 1990
Creator: Paffhausen, M. W.; Smith, D. L. & Ugaki, S. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Separation of Am-Cm from NaNO/sub 3/ waste solutions by in-canyon-tank precipitation as oxalates

Description: A process for the purification of Am-Cm residues was developed specifically for application in Savannah River Plant (SRP) canyon tanks. These Am-Cm residues were collected from several campaigns to produce plutonium containing high isotopic concentrations of /sup 240/Pu. An initial purification from Al/sup 3 +/ had already been accomplished by a solvent extraction process. The product of this process was contaminated with NaNO/sub 3/ as a result of entrainment of the solvent extraction NaNO/sub… more
Date: September 1, 1981
Creator: Gray, L. W.; Burney, G. A.; Wilson, T. W. & McKibben, J. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Double shell slurry low-temperature corrosion tests

Description: A series of year-long tests have been completed on potential double shell slurry (DSS) compositions at temperatures up to 100/sup 0/C. These tests have sought data on uniform corrosion, pitting, and stress-corrosion cracking. No indication of the latter two types of corrosion were observed within the test matrix. Corrosion rates after four months were generally below the 1 mpy (25 ..mu..m/y) design limit. By the end of twelve months all results were below this limit and, except for very concent… more
Date: September 1, 1983
Creator: Divine, J. R.; Bowen, W. M.; McPartland, S. A.; Elmore, R. P. & Engel, D. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Biomedical research with cyclotron produced radionuclides

Description: Progress is reported on: metabolic and tumor localization in man and animals; radiodrug development; dosimetry for internally deposited isotopes; and radioactive material transfer system. Based on experience with /sup 13/N-glutamate in osteogenic sarcoma and Ewing's sarcoma, we conclude that (a) the /sup 13/N label enters tumor tissue rapidly at a rate similar to that at which activity leaves the blood, suggesting that the labeled glutamate itself is being transported into the tumor rather than… more
Date: September 1, 1979
Creator: Laughlin, J.S.; Benua, R.S. & Tilbury, R.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of organic complexants on the mobility of low-level waste radionuclides in soils: status report

Description: The effects of some organic complexants on the sorption by soil of some elements typical of those present in low-level wastes are being evaluated and procedures are being developed to efficiently obtain valid sorption data. Data have been obtained with Hanford soil and the elements europium, nickel, cobalt, cesium, and strontium. Complexants studied to date include ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), and humic acid. The sorption of cesium and stron… more
Date: September 1, 1981
Creator: Swanson, J.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Chemical cleaning specification: few tube test model

Description: The specification is for the waterside chemical cleaning of the 2 1/4 Cr - 1 Mo steel steam generator tubes. It describes the reagents and conditions for post-chemical cleaning passivation of the evaporator tubes. (DLC)
Date: September 1, 1979
Creator: Hampton, L. V. & Simpson, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mobility of organic complexes of nickel and cobalt in soils

Description: This is the third and final report on a study of the effect of organic complexing agents on the behavior of low-level waste radionuclides in soil/groundwater systems. Work done in FY 1983 showed that sorption of some complexed radionuclides, as well as of uncomplexed ones, is important with some soils. Sorption of Ni-EDTA and Co-EDTA complexes occurs with soils from Oak Ridge and Savannah River. The sorption of these kinetically inert complexes results in a lower radionuclide migration rate tha… more
Date: September 1, 1983
Creator: Swanson, J.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Treatment of biomass gasification wastewaters using liquid-liquid extraction

Description: Pacific Northwest Laboratory (PNL) investigated liquid-liquid extraction as a treatment method for biomass gasification wastewaters (BGW). Distribution coefficients for chemical oxygen demand (COD) removal were determined for the following solvents: methylisobutyl ketone (MIBK), n-butyl acetate, n-butanol, MIBK/n-butyl acetate (50:50 vol), MIBK/n-butanol (50:50 vol), tri-butyl phosphate, tri-n-octyl phosphine oxide (TOPO)/MIBK (10:90 wt), TOPO/kerosene (10:90 wt), kerosene, and toluene. The bes… more
Date: September 1, 1981
Creator: Bell, N. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Photophysics and photoredox processes at liquid-liquid interfaces

Description: This report is divided into four sections: (1) Recent work on polymers with covalently bound chromophores, primarily involving triplet state electron transfer quenching; (2) Pyrene and pyrene butyric acid adsorbed onto polystyrene latexes (microspheres); (3) Adsorption and micellization of amphiphilic block polymers with chromophores at the junction between the hydrophobic and hydrophilic part; (4) Adsorption of alternating polymers with grafted combs'' to improve adsorption onto a hydrophobic … more
Date: September 1, 1992
Creator: Webber, S.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Shock characterization of Diallyl Phthalate (DAP)

Description: This study involved the shock characterization of Diallyl Phthalate (DAP), in particular, the equation of state as measured by the shock Hugoniot. Tests were done between 1 and 11 GPa impact shock pressure. The Hugoniot parameters were determined to be: [rho][sub 0]= 1.743, C[sub 0] = 2.20, and S = 2.33.
Date: September 1, 1992
Creator: Weirick, L.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

INEL BNCT Research Program, March/April 1992

Description: This report presents summaries for two months of current research for the Idaho National Engineering Laboratory (INEL) Boron Neutron Capture Therapy (BNCT) Program. Information is presented on development and murino screening experiments of low-density lipoprotein, carboranyl alanine, and liposome boron containing compounds. Pituitary tumor call culture studies are described. Drug stability, pharmacology and toxicity evaluation of borocaptate sodium (BSH) and boronopheoylalanine (BPA) are descr… more
Date: September 1, 1992
Creator: Venhuizen, J.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Results of chemical, toxicological, and bioaccumulation evaluations of dioxins, furans, and guaicol/organic acids in sediments from the Grays Harbor/Chehalis River area

Description: The Battelle/Marine Sciences Laboratory (MSL) was requested by the US Army Corps of Engineers (USACE), Seattle District, to assist in planning and conducting sampling, toxicological tests, and chemistry evaluations on sediment samples collected from the Chehalis River in Grays Harbor, Washington. The objectives of the study were to investigate the toxicity and biological effects of sediments that might potentially contain dioxins, furans, and organic acids, as a result of industrial practices i… more
Date: September 1, 1990
Creator: Word, J.Q.; Ward, J.A. & Squires, A.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of a practical photochemical energy storage system. Quarterly report, July 1, 1977--September 30, 1977

Description: During this quarter the portion of this project concerned with catalysis has concentrated on the development of increased understanding of the cobalt(II) porphyrin catalyst. Of potential importance is the observation that the activity of partially deactivated catalysts can be partially restored by treatment with titanium(III) solutions thereby suggesting that a major cause of the losses of activity of catalysts upon repeated recycling arises from oxidation of cobalt(II) to cobalt(III). The prev… more
Date: September 15, 1977
Creator: Hautala, R.R. & Kutal, C.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Conformational changes in polyelectrolytes and the effect on metal binding

Description: There has been considerable interest in the complexation of metals and other cations by natural humic and fulvic acids, as well as synthetic polyelectrolytes. In order to explain the binding observed for metals, and other species by organic polyelectrolytes, steric effects have been proposed. In this work, the effects of pH changes in aqueous solution on two synthetic polyelectrolytes, polymaleic acid (PMA) and polyacrylic acid (PAA), have been examined by laser Raman spectroscopy and turbidity… more
Date: September 1, 1988
Creator: Marley, N.A.; Gaffney, J.S.; Minai, Y. & Choppin, G.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Platinum(II) complexes as spectroscopic probes for biomolecules

Description: The use of platinum(II) complexes as tags and probes for biomolecules is indeed advantageous for their reactivities can be selective for certain purposes through an interplay of mild reaction conditions and of the ligands bound to the platinum. The use of {sup 195}Pt NMR as a method of detecting platinum and its interactions with biomolecules was carried out with the simplest model of platinum(II) tagging to proteins. Variable-temperature {sup 195}Pt NMR spectroscopy proved useful in studying t… more
Date: September 21, 1990
Creator: Ratilla, Eva
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries Government Documents Department
open access

Hydrography of Onslow Bay, North Carolina: September 1975 (OBIS II)

Description: Data collected during studies of Onslow Bay, off the North Carolina coast during cruises during September, 1975, are reported. Current meters and thermography were placed at depths of 10 and 22 m along the 28 m isobath in the northeastern and southwestern sectors of the Bay. Data are included on wind turbulence and velocity; seawater salinity and temperature at various depths; the content of nitrates, phosphates, silicate, oxygen, chlorophyll, and phytoplankton biomass at various depths. Hydrog… more
Date: September 1, 1975
Creator: Atkinson, L. P.; Singer, J. J.; Dunstan, W. M. & Pietrafesa, L. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

New methods and instrumentation for the characterization of biopolymers using electrospray ionization-mass spectrometry

Description: The technique of electrospray ionization (ESI) has significantly extended the ability to characterize large molecules by mass spectrometry. Proteins to at least 200,000 D can be transferred intact to the gas phase and molecular weights determined with precisions as high as 0.001% if individual charge states can be resolved. The ESI-MS can also serve as a near ideal interface and detector for capillary column separations providing a basis for highly efficient sample utilization. Using capillary … more
Date: September 1, 1992
Creator: Smith, R. D.; Udseth, H. R.; Rockwood, A. L.; Winger, B. E.; Hofstadler, S. A.; Goodlett, D. R. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen