This report presents work done on a laboratory combustor in an attempt to identify mechanisms that govern the simultaneous capture of alkali and sulfur species using sorbent injection techniques. The mechanisms of capture fall into two broad categories i.e. Physical transport of alkali species (in vapor or condensed phase) to the sorbent surface and surface reaction between the alkali species and the sorbents. Water solubility, though not specific, has been used to get an indication of relative significance of these two broad mechanisms. It is assumed that the physically adsorbed alkali species on sorbents are predominantly water soluble while the chemically reacted alkali content is predominantly water insoluble. In order to infer possible dominant mechanisms, specific parameters has been varied during experimentation. Such parameters include, speciation, particle time-temperature history, and furnace burning conditions.

The purpose of this publication is to provide year-end statistics about electric generating units operated by electric utilities in the United States (the 50 States and the District of Columbia). The publication also provides a 10-year outlook of future generating unit additions. The Summary Statistics chapter contains aggregate capacity statistics at the national and various regional levels for operable electric generating units and planned electric generating unit additions. Aggregate capacity data at the national level are presented by energy source and by prime mover. Aggregate capacity data at the various regional levels are presented by prime energy source. Planned capacity additions in new units are summarized by year, 1991 through 2000. Additionally, this chapter contains a summary of electric generating unit retirements, by energy source and year, from 1991 through 2000. The chapter on Operable Electric Generating Units contains data about each operable electric generating unit and each electric generating unit that was retired from service during the year. Additionally, it contains a summary by energy source of electric generating unit capacity additions and retirements during 1990. Finally, the chapter on Projected Electric Generating Unit Additions contains data about each electric generating unit scheduled by electric utilities to start operation …

Measurement of beam properties at the foci of high energy linacs is difficult due to the small size of the waists in proposed and existing accelerators (1 nm {minus} 2 {mu}). This paper considers the use of bremsstrahlung radiation from thin foils to measure the size and phase space density these beams using nonimaging optics. The components of the system are described, and the ultimate resolution, evaluated theoretically for the case of the Final Focus Test Beam at Stanford Linear Accelerator Center, is a few nm. 13 refs., 4 figs. 1 tab.

The use of failure-prone components in critical applications has been traditionally governed by removing such components from service prior to the expiration of their predicted life expectancy. Such early retirement of materials does not guarantee that a particular sample will not fail in actual usage. The increasing cost of such life expectancy based operation and increased demand for improved reliability in industrial settings has necessitated an alternate form of quality control. Modern applications employ nondestructive evaluation (NDE), also known as nondestructive testing (NDT), as a means of monitoring the levels and growth of defects in a material throughout its operational life. This thesis describes the modifications made to existing instrumentation used for magnetic measurements at the Center for Nondestructive Evaluation at Iowa State University. Development of a new portable instrument is also given. An overview of the structure and operation of this instrumentation is presented. This thesis discusses the application of the magnetic hysteresis and Barkhausen measurement techniques, described in Sections 1.3.1 and 1.3.2 respectively, to a number of ferromagnetic specimens. Specifically, measurements were made on a number of railroad steel specimens for fatigue characterization, and on specimens of Damascus steel and Terfenol-D for materials evaluation. 60 refs., 51 figs., …

This document discusses a turbulator which utilizes a heated chemical bath to reduce smearable contamination from small parts and tools. It is comprised of two agitators programmed to automatically alternate the flow of the cleaning solution within the tank in four separate and distinct high velocity flow patterns allowing access to the entire surface area of the part or tool being decontaminated. The turbulator is being evaluated to determine if agitation increases the effectiveness of waste minimization. Testing of the turbulator consisted of evaluation of the Sludgetrap Containment, Tool Cleaning Demonstration, and Coupon Testing. Results so far are that the sludgetrap is effective in containing particles the size of sand, agitation increases the effectiveness of the turbulator, abrasives can replace detergents for waste minimization, and Inconel 625 is more difficult to clean than Type 3041 Stainless Steel.

Research continues on the flow properties of wet solids. During this period we have made: progress in the analysis of the accuracy of the technique, progress in firming the foundations of LIPA for Solid-Liquid Mixtures, progress in the construction of better prototype skimmers, continued progress in chemically manufacturing both more red europium imbedded CaF{sub 2} and Green liquid Flowlite, and progress in understanding the coupling of LIPA chemicals snd dynamic range and timing. (VC)

In support of a fiber-tile calorimeter for SDC, we have done studies on a number of topics. The most basic problems were light output and uniformity of response. Using a small electron beam, we have studied fiber placement, tile preparation, wrapping and masking, fiber splicing, fiber routing, phototube response, and some degradation factors. We found two configurations which produced more light output than the others and reasonably uniform response. We have chosen one of these to go into production for the EM test module on the basis of fiber routing for ease of assembly of the calorimeter. We have also applied some of the tools we developed to CDF end plug tile uniformity, shower max testing and development for a couple of detectors, and development of better techniques for radiation damage studies. 18 figs.

Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the Economic Development Administration's (EDA) May 1998 report on its public works program, which created jobs in economically distressed communities, focusing on whether: (1) the report's results would be similar if additional variables that directly took into account the prior level of a county's employment or population were included in the analyses; (2) the report's job creation estimates include only new jobs or jobs relocated from another area; and (3) other technical issues might affect the reliability of the cost estimates presented."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the U.S. Special Operations Command's (USSCOM) acquisition strategy for aircraft electronic warfare systems, focusing on the soundness of USSCOM's electronic warfare acquisition strategy in terms of correcting deficiencies and maximizing commonality in its aircraft survivability equipment."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed events related to personnel reassignments, appointments, and activities at the Small Business Administration (SBA)."

Correspondence issued by the General Accounting Office with an abstract that begins "GAO examined the Department of Defense's fiscal year (FY) 2000 budget request and prior years' appropriations for selected weapon system procurement and research, development, test, and evaluation (RDT&E) programs."

Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the Department of Education's Office for Civil Rights (OCR), focusing on changes: (1) the OCR has made in its complaint resolution process since fiscal year (FY) 1993; and (2) in the timeliness and efficiency in resolving complaints between FY 1993 and FY 1997."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO provided information on the Navy Personal Property Pilot."

Correspondence issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided information on the challenges facing the U.S. Postal Service (USPS) in addressing the year 2000 problem."

Other written product issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO reviewed the Social Security Administration's (SSA) new rule on Old-age, Survivors, and Disability Insurance and Supplemental Social Security Income for the aged, blind, and disabled. GAO noted that: (1) the rule would revise the monthly earnings guidelines for determining when earnings demonstrate the ability to engage in substantial gainful activity (SGA); (2) specifically, the final rule raises from $500 to $700 the average monthly earnings guidelines used to determine whether work done by persons with impairments other than blindness is SGA; and (3) SSA complied with the applicable requirements in promulgating the rule."

A chapter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO reviewed the management and oversight of the U.S. Special Operations Forces' overseas deployments to train with the armed forces and other security forces of friendly foreign countries, focusing on: (1) whether the Department of Defense (DOD) has implemented the Joint Combined Exchange Training (JCET) program in accordance with legislation; (2) whether DOD and the Department of State are providing civilian oversight to ensure that JCET activities are consistent with U.S. foreign policy objectives in countries that GAO included in its review; and (3) how DOD is implementing recent legislation that restricts it from training with foreign forces involved in human rights abuses."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO provided an update to its report on the nonpayment of U.S. income taxes by foreign-controlled corporations (FCC) and U.S.-controlled corporations (USCC), focusing on comparisons of: (1) the percentages of FCCs and USCCs that filed income tax returns showing no tax liabilities for 1989 through 1995, the latest years for which data were available; and (2) selected characteristics, including age, industrial sector, and certain cost ratios, of large corporations--those with assets of $250 million or more or gross receipts of $50 million or more."

Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the President's proposal for addressing social security and use of the budget surplus."

Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the year 2000 challenge facing state and local governments, focusing on: (1) the reported year 2000 readiness of state and local governments and actions taken by the President's Council on Year 2000 Conversion in this area; (2) the readiness and federal activities associated with state-administered federal programs; and (3) GAO's observations on H.R. 1599, the Year 2000 Compliance Assistance Act."

Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed its January 1999 report on the Department of Housing and Urban Development's (HUD) major management challenges and program risks, focusing on: (1) corrective actions that HUD has taken or initiated on its major management challenges; (2) major management challenges that remain and limit HUD's effectiveness in carrying out its mission; and (3) further actions that are needed to resolve these challenges."

Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the President's proposal for addressing social security and use of the budget surplus."

Testimony issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO discussed the Postal Service's (USPS) conversion strategy for preparing for the year 2000 crisis, focusing on: (1) year 2000 planning documents and their year 2000 guidance; and (2) internal development standards."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a congressional request, GAO examined various issues involving consumers' dealings with funeral-related or death care industries, which include businesses that provide funeral and cemetery goods or services, focusing on: (1) the availability of information on the nature and extent of consumer complaints about death care industries; (2) the Federal Trade Commission's (FTC) efforts to ensure compliance with its Funeral Rule; and (3) selected state governments' roles in protecting consumers in their death care transactions."

A letter report issued by the General Accounting Office with an abstract that begins "Pursuant to a legislative requirement, GAO reviewed the Department of Defense's (DOD) base closure accounts and its budget request for base closure activities, focusing on: (1) the opportunities available to offset the fiscal year (FY) 2000 budget request; and (2) certain base realignment and closure (BRAC) funding practices that could make it difficult for Congress to discern DOD's actual funding requirements and priorities."