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Simulation of the carbon cycle in the ocean

Description: A dual carbon-nitrogen biological model of the upper ocean has been developed, which has successfully allowed predictions of fluxes of carbon between atmosphere and the deep ocean to made. Regarding studying the carbon cycle in the ocean, the modelling has highlighted the need for a good understanding of the interactions between the carbon and nitrogen cycles, and also the importance of zooplankton grazing and levels of overwintering biological stocks. Problems have been encountered with the ac… more
Date: September 16, 1991
Creator: Fasham, M.J.R.
Partner: UNT Libraries Government Documents Department
open access

Budgets and behaviors of uranium and thorium series isotopes in the Santa Monica Basin off the California Coast

Description: Samples from three time-series sediment traps deployed in the Santa Monica Basin off the California coast were analyzed to study the flux and scavenging of uranium and thorium series isotopes. Variations of uranium and thorium series isotopes fluxes in the water column were obtained by integrating these time-series deployment results. Mass and radionuclide fluxes measured from bottom sediment traps compare favorably with fluxed determined from sediment core data. This agreement suggests that th… more
Date: December 16, 1991
Creator: Yu, Lei.
Partner: UNT Libraries Government Documents Department
open access

Soft x-ray measurement of internal tearing mode structure in a reversed-field pinch

Description: The structure of internally resonant tearing modes has been studied in the Madison Symmetric Torus reversed-field pinch with a soft x-ray detector system consisting of an imaging array at one toroidal location and several detectors at different toroidal locations. The toroidal mode numbers of m = 1 structures are in the range n = {minus}5, {minus}6, {minus}7. The modes propagate with phase velocity v = 1--6 {times} 10{sup 6} cm/s, larger than the diamagnetic drift velocity v{sub d} {approximate… more
Date: September 16, 1991
Creator: Chartas, G. & Hokin, S.
Partner: UNT Libraries Government Documents Department
open access

[Copy of Financial statement: March on Austin]

Description: Copy of a financial statement for March on Austin 1991. Includes handwritten notes.
Date: February 16, 1991
Creator: March on Austin
Partner: UNT Libraries Special Collections
open access

Prototype SDC Muon alignment-position monitoring concepts

Description: We have developed and tested some prototype ideas, components, and systems for monitoring the relative planar orientations, spacings between, transverse positions and rotations of the multi Muon supermodule layers in a given SDC Muon chamber projective tower. These are described and parameterized from measurements. Their resolutions are given, and long term stabilities have been determined.
Date: March 16, 1991
Creator: Eartly, D. & Johnson, P.
Partner: UNT Libraries Government Documents Department
open access

Neutron capture therapy: Years of experimentation---Years of reflection

Description: This report describes early research on neutron capture therapy over a number of years, beginning in 1950, speaking briefly of patient treatments but dwelling mostly on interpretations of our animal experiments. This work carried out over eighteen years, beginning over forty years ago. Yet, it is only fitting to start by relating how neutron capture therapy became part of Brookhaven's Medical Research Center program.
Date: December 16, 1991
Creator: Farr, L.E.
Partner: UNT Libraries Government Documents Department
open access

A study of potential high band-gap photovoltaic materials for a two step photon intermediate technique in fission energy conversion

Description: A diamond synthesis chamber and an ion implanter have been constructed. Work has been rapidly progressing and diamond has been synthesized. There are five variables which affect the quality of diamond: (1) mass flow of methane, (2) mass flow of hydrogen, (3) filament temperature, (4) substrate temperature, and (5) substrate material. Enclosed are pictures and data of previous diamond growth experiments. Current work is focused on the conditions which produce the best quality diamond films. In t… more
Date: August 16, 1991
Partner: UNT Libraries Government Documents Department
open access

LIMB demonstration project extension

Description: The main objectives of this project are: (1) To demonstrate the general applicability of Limestone Injection Multistage Burner (LIMB) technology by testing 3 coals and 4 sorbents (total of 12 coal/sorbent combinations) at the Ohio Edison Edgewater Plant. (2) To demonstrate that Coolside is a viable technology for improving precipitator performance and reducing sulfur dioxide emissions while acceptance operability is maintained. During the past quarter, activities for phase I, design and permitt… more
Date: December 16, 1991
Partner: UNT Libraries Government Documents Department
open access

Steam gasification of carbon: Catalyst properties

Description: This research uses several techniques to measure the concentration of catalyst sites and determine their stoichiometry for the catalyzed gasification of carbon. Both alkali and alkaline earth oxides are effective catalysts for accelerating the gasification rate of coal chars, but only a fraction of the catalyst appears to be in a form that is effective for gasification, and the composition of that catalyst is not established. Transient techniques, with {sup 13}C labeling, are being used to stud… more
Date: September 16, 1991
Creator: Falconer, J.L.
Partner: UNT Libraries Government Documents Department
open access

Enzymatic desulfurization of coal

Description: The overall objective of this program was to investigate the feasibility of an enzymatic desulfurization process specifically intended for organic sulfur removal from coal. Toward that end, a series of specific objectives were defined: (1) establish the feasibility of (bio)oxidative pretreatment followed by biochemical sulfate cleavage for representative sulfur-containing model compounds and coals using commercially-available enzymes; (2) investigate the potential for the isolation and selectiv… more
Date: May 16, 1991
Creator: Boyer, Y.N.; Crooker, S.C.; Kitchell, J.P. & Nochur, S.V.
Partner: UNT Libraries Government Documents Department
open access

Electroweak phase transitions

Description: An analytic treatment of the one Higgs doublet, electroweak phase transition is given. The phase transition is first order, occurs by the nucleation of thin walled bubbles and completes at a temperature where the order parameter, {l angle}{phi}{r angle}{sub T} is significantly smaller than it is when the origin becomes absolutely unstable. The rate of anomalous baryon number violation is an exponentially function of {l angle}{phi}{r angle}{sub T}. In very minimal extensions of the standard mode… more
Date: September 16, 1991
Creator: Anderson, G.W.
Partner: UNT Libraries Government Documents Department
open access

(Attendance at the XIV Nuclear Physics Symposium)

Description: This report includes background material on the long-standing series of annual symposia presented by the Mexican nuclear physics community, summarizes the highlights of the fourteenth symposium in the series, and records items learned by the traveler in subsequent visits to two research laboratories in Mexico.
Date: January 16, 1991
Creator: Halbert, M.L.
Partner: UNT Libraries Government Documents Department
open access

Agenda and briefing book: Clean Coal Technology Coordinating Committee, September 16, 1991, Louisville, Kentucky

Description: A considerable amount of time was spent discussing the Clean Air Act Amendments pending before Congress. Several members pointed out provisions of the legislation that would have serious impacts on the coal industry and the electric utility industry. The need for increased electricity in Florida raised the question about coal fired Power Plants. It is generally believed that most people in Florida do not know that over 55 percent of the electricity now comes from coal-fired generators. However,… more
Date: September 16, 1991
Partner: UNT Libraries Government Documents Department
open access

Microtube strip heat exchanger

Description: This progress report is for the September--October 1991 quarter. We have demonstrated feasibility of higher specific conductance by a factor of five than any other work in high-temperature gas-to-gas exchangers. These laminar-flow, microtube exchangers exhibit extremely low pressure drop compared to alternative compact designs under similar conditions because of their much shorter flow length and larger total flow area for lower flow velocities. The design appears to be amenable to mass product… more
Date: October 16, 1991
Creator: Doty, F. David
Partner: UNT Libraries Government Documents Department
open access

Agenda and briefing book: Clean Coal Technology Coordinating Committee, September 16, 1991, Louisville, Kentucky

Description: A considerable amount of time was spent discussing the Clean Air Act Amendments pending before Congress. Several members pointed out provisions of the legislation that would have serious impacts on the coal industry and the electric utility industry. The need for increased electricity in Florida raised the question about coal fired Power Plants. It is generally believed that most people in Florida do not know that over 55 percent of the electricity now comes from coal-fired generators. However,… more
Date: September 16, 1991
Partner: UNT Libraries Government Documents Department
open access

LIMB demonstration project extension. Quarterly report No. 18, August--October 1991

Description: The main objectives of this project are: (1) To demonstrate the general applicability of Limestone Injection Multistage Burner (LIMB) technology by testing 3 coals and 4 sorbents (total of 12 coal/sorbent combinations) at the Ohio Edison Edgewater Plant. (2) To demonstrate that Coolside is a viable technology for improving precipitator performance and reducing sulfur dioxide emissions while acceptance operability is maintained. During the past quarter, activities for phase I, design and permitt… more
Date: December 16, 1991
Partner: UNT Libraries Government Documents Department
open access

Neutron capture therapy: Years of experimentation---Years of reflection

Description: This report describes early research on neutron capture therapy over a number of years, beginning in 1950, speaking briefly of patient treatments but dwelling mostly on interpretations of our animal experiments. This work carried out over eighteen years, beginning over forty years ago. Yet, it is only fitting to start by relating how neutron capture therapy became part of Brookhaven`s Medical Research Center program.
Date: December 16, 1991
Creator: Farr, L. E.
Partner: UNT Libraries Government Documents Department
open access

DOE LLW classification rationale

Description: This report was about the rationale which the US Department of Energy had with low-level radioactive waste (LLW) classification. It is based on the Nuclear Regulatory Commission`s classification system. DOE site operators met to review the qualifications and characteristics of the classification systems. They evaluated performance objectives, developed waste classification tables, and compiled dose limits on the waste. A goal of the LLW classification system was to allow each disposal site the … more
Date: September 16, 1991
Creator: Flores, A. Y.
Partner: UNT Libraries Government Documents Department
open access

Stanford Geothermal Program [quarterly technical report, April--June 1991; topical report, July 1, 1990--June 30, 1991]

Description: The reinjection task on optimizing injection into the Palinpinon geothermal field in the Philippines was completed. Progress is summarized on experimental investigation of absorption, estimation of adsorption parameters from experimental and field data, the theoretical study of adsorption isotherms, and interpreting pressure data. (MHR)
Date: July 16, 1991
Partner: UNT Libraries Government Documents Department
open access

Iron yoke eddy current induced losses with application to the ALS septum magnets

Description: The theoretical development of relations governing the eddy current induced losses in iron electromagnet yokes is reviewed. A baseline laminated electromagnet design is analyzed and a parametric study illustrates the sensitivity of core losses to perturbations of various geometrical, material, and excitation parameters. Core losses and field gradients for the ALS septum magnets are calculated. Design modifications capable of eliminating transverse and longitudinal field gradients are discussed.
Date: August 16, 1991
Creator: Schlueter, R. D.
Partner: UNT Libraries Government Documents Department
open access

Prototype SDC Muon alignment-position monitoring concepts

Description: We have developed and tested some prototype ideas, components, and systems for monitoring the relative planar orientations, spacings between, transverse positions and rotations of the multi Muon supermodule layers in a given SDC Muon chamber projective tower. These are described and parameterized from measurements. Their resolutions are given, and long term stabilities have been determined.
Date: March 16, 1991
Creator: Eartly, D. & Johnson, P.
Partner: UNT Libraries Government Documents Department
open access

[Financial Statement: March on Austin]

Description: Financial statement from March on Austin 1991. Includes handwritten notes.
Date: May 16, 1991
Creator: March on Austin
Partner: UNT Libraries Special Collections
open access

The CO-OP Guide

Description: You are at D0, the newest and most advanced experiment at Fermilab. Its goal is to find the 'top quark', nicknamed 'truth'. theoretically one of the six fundamental building blocks of matter. Combinations of the six quarks are said to make up electrons, protons and neutrons. Your group at D0 is the cryogenic division. Its goal is to provide and maintain a cryogenic system which ultimately supplies and controls the liquid argon used in the giant cryostats for the experiment. The high purity liqu… more
Date: August 16, 1991
Creator: Michael, J.
Partner: UNT Libraries Government Documents Department
open access

AP0 Target Vault Shielding Study

Description: Efforts are currently underway to redesign the neutron covers to meet radiation-safety guidelines, with the goal of reducing the radiation level over the vault by at least a factor of 100. This note describes the results of measurements of radiation attenuation by sample shields. The purpose of the shielding study is to provide data for the redesign of the neutron covers. The radiation escaping from the neutron covers appears to be predominantly gammas. In addition, there is a small, more penet… more
Date: August 16, 1991
Creator: Bieniosek, F.M.
Partner: UNT Libraries Government Documents Department
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