Enhanced durability and reactivity for zinc ferrite desulfurization sorbent (open access)

Enhanced durability and reactivity for zinc ferrite desulfurization sorbent

AMAX Research Development Center (AMAX R D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a bench-scale, fixed-bed reactor. Durability may be defined as the ability of the sorbent to maintain important physical characteristics such As size, strength, and specific surface area during 10 cycles of sulfidation and oxidation.
Date: May 18, 1987
Creator: Jha, M. C.; Baltich, L. K. & Berggren, M. H.
Object Type: Report
System: The UNT Digital Library
Hybrid Simulations With Dynamical Quarks: Spectra, Screening and Thermodynamics (open access)

Hybrid Simulations With Dynamical Quarks: Spectra, Screening and Thermodynamics

We summarize simulations made by the Argonne/University of Illinois group using the Hybrid algorithm to include dynamical staggered fermions. Recent work on the mass spectrum and screening effects due to the inclusion of four light flavors of dynamical quarks is presented. We also present a brief overview of what we have learned about the finite temperature chiral phase transition. 5 refs., 4 figs., 1 tab.
Date: November 18, 1987
Creator: Sinclair, D. K.
Object Type: Article
System: The UNT Digital Library
Analytical and numerical analysis of finite amplitude Rayleigh-Taylor instability (open access)

Analytical and numerical analysis of finite amplitude Rayleigh-Taylor instability

We summarize the results obtained in the last year. These include a simple model of bubble competition in Rayleigh-Taylor unstable flows which gives results which are in good agreement with experiment. In addition the model has been compared with two dimensional numerical simulations of inviscid Rayleigh-Taylor instability using the cloud-in-cell method. These simulations can now be run into the late time regime and can track the competition of as many as ten bubbles. The improvement in performance over previous applications of the cloud-in-cell approach is due to the application of finite difference techniques designed to handle shock-like structures in the vorticity of the interface which occur at late times. We propose to extend the research carried thus far to Rayleigh-Taylor problems in three dimensional and convergent geometries as well as to two-fluid instabilities in which interface roll-up is observed. Finally we present a budget for the fiscal year 1987-1988. 6 refs.
Date: September 18, 1987
Creator: Meiron, D.I. & Saffman, P.G.
Object Type: Report
System: The UNT Digital Library
Model based controls and the AGS booster controls system architecture (open access)

Model based controls and the AGS booster controls system architecture

The Heavy Ion Transfer Line used to inject heavy ions created at the Tandem Van de Graaff into the Alternating Gradient Synchrotron (AGS) is briefly discussed, particularly as regards its control system. (LEW)
Date: August 18, 1987
Creator: Casella, R.A.
Object Type: Article
System: The UNT Digital Library
Detecting the Heavy Higgs Boson at the SSC (open access)

Detecting the Heavy Higgs Boson at the SSC

Detection of a heavy Higgs boson (2M/sub z/ < M/sub H/ < 1 TeV) is considered. The production mechanisms and backgrounds are discussed. Their implementation in the PYTHIA and ISAJET Monte Carlo programs are checked. The decay modes H ..-->.. ZZ ..-->.. llll and H ..-->.. ZZ ..-->.. llvv are discussed in detail. The signal/background is evaluated and some relevant detector parameters are specified. Some remarks are also made concerning the requirements imposed on detectors by the decay mode H ..-->.. WW ..-->.. lv + jets. Experimental signatures for models in which there is no Higgs boson of mass less than 1 TeV are outlined. 44 refs.
Date: December 18, 1987
Creator: Cahn, R. N.; Chanowitz, M.; Golden, M.; Herrero, M. J.; Hinchliffe, I.; Wang, E. M. et al.
Object Type: Article
System: The UNT Digital Library
Multidimensional modeling of convective heat transfer with application to IC (internal combustion) engines (open access)

Multidimensional modeling of convective heat transfer with application to IC (internal combustion) engines

The objective of this project is to develop a more comprehensive understanding of the convective heat transfer process in complex, unsteady turbulent reacting flows, typical of those which occur in internal combustion engines. The specific area of research will be the representation of heat transfer in detailed multi-dimensional Navier-Stokes models, and modeling of turbulent transport mechanisms. The detailed tasks will include a review of relevant prior work. Based on this review, and original work done under this contract, several modeling approaches will be formulated and further studied and tested. The tests will be carried out on flow cases which have relevance to engine flows, and for which reliable experimental data exist. Such data will be sought and identified. The analytical studies will lead to the determination of the best modeling approaches to be used for heat transfer simulation in internal combustion engines. Following that, a detailed study will be carried out of spatial and temporal heat flux distribution in a representative engine. This will be complemented by a parametric study of engine heat transfer dependence on intake flow details, combustion chamber geometry, engine speed and engine load.
Date: June 18, 1987
Creator: Jennings, M.J. & Morel, T.
Object Type: Report
System: The UNT Digital Library
Shock wave effects and metallurgical parameters (open access)

Shock wave effects and metallurgical parameters

This review summarizes results from some principal investigations of shock-strain effects in metals. The strain contribution indeed plays a role in residual microstructures, particularly, if the strain becomes dominant as in ''under trapped'' experiments of low or moderate pressure or for that matter, of ''well trapped'' high pressure experiments. Not only does this strain contribution affect the microstructure by increasing deformation, a concommitant strain heat is generated and absorbed by the shocked material. This strain heat, if large enough (relative to the homologous temperature of the material), can and does have an annealing effect on the residual microstructure. This strain heat is over and above the values typically calculated for materials implying little or no strain. Although the accumulative effects of associated strain are not completely definite, the collective picture presented is one in which shock-induced strains, when large enough, have a significant effect on the residual microstructure. 43 refs., 20 figs.
Date: May 18, 1987
Creator: Staudhammer, K.P.
Object Type: Article
System: The UNT Digital Library
Texas Register, Volume 12, Number 62, Pages 2701-2738, August 18, 1987 (open access)

Texas Register, Volume 12, Number 62, Pages 2701-2738, August 18, 1987

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: August 18, 1987
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 12, Number 70, Pages 3237-3293, September 18, 1987 (open access)

Texas Register, Volume 12, Number 70, Pages 3237-3293, September 18, 1987

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: September 18, 1987
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 12, Number 94, Pages 4713-4799, December 18, 1987 (open access)

Texas Register, Volume 12, Number 94, Pages 4713-4799, December 18, 1987

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: December 18, 1987
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Attorney General Opinion: JM-632 (open access)

Texas Attorney General Opinion: JM-632

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Disposition of interest earned on "hot check" fund administered by a criminal district attorney
Date: February 18, 1987
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-647 (open access)

Texas Attorney General Opinion: JM-647

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Whether certain applicants for admission to Texas Universities are residents of Texas for Purposes of payment of tuition.
Date: March 18, 1987
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-700 (open access)

Texas Attorney General Opinion: JM-700

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Whether all disabled persons have a right of access to transportation supported by public funds.
Date: May 18, 1987
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-701 (open access)

Texas Attorney General Opinion: JM-701

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Whether a magistrate may require as a precondition for obtaining a trial, the posting of an appearance bond in minor traffic offense cases under article 6701d, V.T.C.S..
Date: May 18, 1987
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-723 (open access)

Texas Attorney General Opinion: JM-723

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Funding responsibilities of the city of Bastrop under the Indigent Health Care Act.
Date: June 18, 1987
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-771 (open access)

Texas Attorney General Opinion: JM-771

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Clarification of Attorney General Opinion JM-670 (1987)
Date: August 18, 1987
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-788 (open access)

Texas Attorney General Opinion: JM-788

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification: Whether a county may expend funds to oppose an application to amend a radioactive materials license
Date: September 18, 1987
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-822 (open access)

Texas Attorney General Opinion: JM-822

Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, Jim Mattox, regarding a legal question submitted for clarification; Whether the 180-day waiting period set forth in section 442.008, Government Code, may be waived (RQ-1282)
Date: November 18, 1987
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Enhanced durability and reactivity for zinc ferrite desulfurization sorbent. Quarterly technical progress report 2, January--March 1987 (open access)

Enhanced durability and reactivity for zinc ferrite desulfurization sorbent. Quarterly technical progress report 2, January--March 1987

AMAX Research & Development Center (AMAX R&D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a bench-scale, fixed-bed reactor. Durability may be defined as the ability of the sorbent to maintain important physical characteristics such As size, strength, and specific surface area during 10 cycles of sulfidation and oxidation.
Date: May 18, 1987
Creator: Jha, M. C.; Baltich, L. K. & Berggren, M. H.
Object Type: Report
System: The UNT Digital Library
Flexible Support Liquid Argon Heat Intercept (open access)

Flexible Support Liquid Argon Heat Intercept

A device in the flexible support system for the Central Calorimeter is the Liquid Argon Heat Intercept. The purpose of this apparatus is to intercept heat outside the inner vessel so that bubbles do not form inside. If bubbles did happen to form inside the vessel, they would cause an electric arc between the read-out board and the absorption plates, thus destroying the pre-amplifier. Since this heat intercept is located in the center of the flexible support, it must also support the load of the Central Caloimeter. Figure 1 shows how the intercept works. The subcooled liquid argon is driven through a 1/4-inch x 0.049-inch w tube by hydrostatic pressure. the ambient heat boils the subcooled argon. The gaseous argon flows through the tube and is condensed at the top of the vessel by a 100 kW cooling coil. This process is rpesent in all four flexible support systems.
Date: May 18, 1987
Creator: Rudland, D. L.
Object Type: Report
System: The UNT Digital Library
Texas Preventable Disease News, Volume 47, Number 15, April 18, 1987 (open access)

Texas Preventable Disease News, Volume 47, Number 15, April 18, 1987

Newsletter of the Texas Bureau of Disease Control and Epidemiology discussing the news, activities, and events of the organization and other information related to health in Texas.
Date: April 18, 1987
Creator: Texas. Bureau of Disease Control and Epidemiology.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Equations describing coherent and partially coherent multilevel molecular excitation induced by pulsed Raman transitions: III (open access)

Equations describing coherent and partially coherent multilevel molecular excitation induced by pulsed Raman transitions: III

This memo discusses the equations of motion used to describe multilevel molecular excitation induced by Raman transitions. These equations are based upon the time-dependent Schroedinger equation expressed in a basis of molecular energy states. A partition of these states is made into two sets, those that are far from resonance (and hence unpopulated) and those that are close to resonance, either by one-photon transition or two-photon (Raman) processes. By adiabatic elimination an effective Schroedinger equation is obtained for the resonance states alone. The effective Hamiltonian is expressible in terms of a polarizibility operator.
Date: February 18, 1987
Creator: Shore, B. W.; Sacks, R. & Karr, T.
Object Type: Report
System: The UNT Digital Library
Texas Broilers: For Week Ending November 14, 1987 (open access)

Texas Broilers: For Week Ending November 14, 1987

Weekly report of the Texas Agricultural Statistics Service on broiler chick numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks, from the week ending October 10 to the week ending November 14, during 1986 and 1987 for broiler eggs set, chicks hatched, and chicks placed.
Date: November 18, 1987
Creator: Texas Agricultural Statistics Service
Object Type: Report
System: The Portal to Texas History
Texas Broilers: For Week Ending March 14, 1987 (open access)

Texas Broilers: For Week Ending March 14, 1987

Weekly report of the Texas Agricultural Statistics Service on broiler chick numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks, from the week ending February 7 to the week ending March 14, during 1986 and 1987 for broiler eggs set, chicks hatched, and chicks placed.
Date: March 18, 1987
Creator: Texas Agricultural Statistics Service
Object Type: Report
System: The Portal to Texas History