Gasoline from natural gas by sulfur processing. Quarterly technical progress report No. 2, October 1, 1993--December 31, 1993

This report presents the work performed at the Institute of Gas Technology (IGT) during the second program quarter from October 1, 1993 to December 31, 1993, under Department of Energy (DOE) Contract No. DE-AC22-93PC92114. This program has co-ordinated funding for Task 1 from IGT`s Sustaining Membership Program (SMP), while DOE is funding Tasks 2--8. Progress in all tasks are reported. The overall objective of this research project is to develop a catalytic process to convert natural gas to liquid transportation fuels. The process consists of two steps that each utilize catalysts and sulfur containing intermediates: (1) to convert natural gas to CS{sub 2} and (2) to convert CS{sub 2} to gasoline range liquids. Experimental data will be generated to demonstrate the potential of catalysts and the overall process. During this quarter, progress in the following areas has been made. An existing unit at IGT was modified to accommodate the sulfur feedstocks and the higher temperatures (>1300{degree}K) required for studying the reactions of hydrogen sulfide and methane as proposed in Tasks 2--5. An HP 5890 gas chromatograph with a TCD (thermal conductivity detector) for detecting fixed gases including hydrogen and an FPD (flame photometric detector) for detecting sulfur compounds was purchased using SMP funds and has been installed and calibrated. A total of seventy runs on MoS{sub 2}, WS{sub 2}, ZrS{sub 2} catalysts as well as quartz wool were performed. As high as 61% H{sub 2}S conversion was observed

Gasoline from natural gas by sulfur processing. Quarterly progress report, June--September 1993

The overall objective of this research project is to develop a catalytic process to convert natural gas to liquid transportation fuels. The process consists of two steps that each utilize catalysts and sulfur containing intermediates: (1) to convert natural gas to CS{sub 2}, and (2) to convert CS{sub 2} to gasoline range liquids. Experimental data will be generated to demonstrate the potential of catalysts and the overall process. During this first quarter, progress in the following areas has been made. One high surface area molybdenum catalyst has been prepared. An existing unit at IGT is being modified to accommodate the sulfur feedstocks and the higher temperatures(> 1300{degrees}K) required for studying the reactions of hydrogen sulfide and methane as proposed in Tasks 2 through 5. An HP 5890 gas chromatograph with a TCD(thermal conductivity detector) for detecting fixed gases including hydrogen and an FPD(flame photometric detector) for detecting sulfur compounds was purchased using SMP funds and has been received

The impact of frailty in older women undergoing pelvic floor reconstructive surgery.

IMPORTANCE AND OBJECTIVE: Women ≥ 65 years old commonly undergo pelvic surgery but are often not screened for coexisting frailty, the presence of which increases the risk of postoperative complications. In the absence of a current consensus, the objective of this review is to discuss the incorporation of a frailty assessment into the work-up of women undergoing pelvic floor reconstructive surgery. METHODS: This is a review of the literature, focusing on measurements of frailty including the Edmonton Frail Scale, FRAIL scale, Groningen Frailty Indicator, frailty phenotype, Tilburg Frailty Indicator, a 70-item frailty index, Mini-Cog score, Charlson comorbidity index, timed up and go test, and life-space assessment. Their use in the perioperative management of older women undergoing pelvic floor reconstructive surgery will be discussed. DISCUSSION AND CONCLUSION: Understanding the concept of frailty and how it may affect surgical decisions and outcomes is essential. The timed up and go test, life space assessment and Mini-Cog assessment at a minimum should be considered preoperatively in patients over the age of 65 years old planning pelvic floor or elective surgery. : Video Summary:http://links.lww.com/MENO/A676

Pressurized Fluidized-Bed Hydroretorting of eastern oil shales. Final report, June 1992--January 1993

The Devonian oil shales of the Eastern United States are a significant domestic energy resource. The overall objective of the multi-year program, initiated in September 1987 by the US Department of Energy was to perform the research necessary to develop the pressurized fluidized-bed hydroretorting (PFH) process for producing oil from Eastern oil shales. The program also incorporates research on technologies in areas such as raw shale preparation, beneficiation, product separation and upgrading, and waste disposal that have the potential of improving the economics and/or environmental acceptability of recovering oil from oil shales using the PFH process. The program was divided into the following active tasks: Task 3 -- Testing of Process Improvement Concepts; Task 4 -- Beneficiation Research; Task 6 -- Environmental Data and Mitigation Analyses; and Task 9 -- Information Required for the National Environmental Policy Act. In order to accomplish all of the program objectives, tho Institute of Gas Technology (ICT), the prime contractor, worked with four other institutions: The University of Alabama/Mineral Resources Institute (MRI), the University of Alabama College of Engineering (UA), University of Kentucky Center for Applied Energy Research (UK-CAER), and Tennessee Technological University (TTU). This report presents the work performed by IGT from June 1, 1992 through January 31, 1993

Fall risk and function in older women after gynecologic surgery

Purpose of study: To examine change in balance-related fall risk and daily functional abilities in the first 2 postoperative weeks and up to 6 weeks after gynecologic surgery. Materials and methods: Prospective cohort study in gynecologic surgery patients age 65 and older. Balance confidence (Activities-specific Balance Confidence Scale) and functional status (basic and instrumental activities of daily living) were recorded pre-and post-operatively daily for 1 week and twice the second week. Physical performance balance and functional mobility were measured pre-and 1 week post-operatively using the Tinetti Fall Risk Scale, Timed Up and Go, and 6-Minute Walk test. Measures were repeated 6 weeks after surgery. Nonparametric tests for paired data were used comparing scores baseline to post-operative (POD) 7 and to POD 42. Results: Median age was 72 years (range 65-88). Fall risk was elevated during the first 2 post-operative weeks, greatest on the median discharge day, POD 2 (p < 0.01). Balance performance and functional mobility at 1 week were significantly lower than baseline (p < 0.01). Functional abilities declined, including new dependence in medication management at home in 22% of these independent and cognitively intact women. Conclusions: After gynecologic surgery, older women's fall risk is highest on POD 2 and remains elevated from baseline for 2 weeks. Functional limitations in the early home recovery period include the anticipated (bathing, cooking, etc.) and some unanticipated (medication management) ones. This information may help with postoperative discharge planning.Published open access.This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]