578 research outputs found

    Educational change a prerequisite

    Get PDF
    Should public schools bring about change in society

    PCV63 Impact of Adherence to Statins and Antihypertensive Medications on Short-Term Disability Costs in an Employer Population

    Get PDF

    Final Cultural Resources Report For The Salt Creek Midstream, LLC Proposed Waha II Pipeline Project On State Of Texas Lands In Reeves County, Texas

    Get PDF
    Enercon Services, Inc. (ENERCON), in support of Salt Creek Midstream, LLC, conducted an intensive archeological survey for the proposed Waha II Pipeline Project. The proposed pipeline is approximately 27.33 miles in length, located near Pecos, Texas in Reeves County. This report encompasses only the two State of Texas Lands, administered by the Texas General Land Office (TGLO), segments of the proposed Waha II Pipeline Project which is approximately 0.69-miles (3,666 feet) in length in Reeves County. The State of Texas Lands portion of the project area is mapped on the United States Geological Survey (USGS) Toyah Lake, Tex. (1963), and Old X Ranch, Tex. (1963, Photorevised 1981), 7.5 Minute Quadrangles. The construction corridor consists of a 50-foot-wide permanent pipeline right-of-way (ROW) and a 50-footwide temporary workspace corridor. The cultural resources survey corridor was 100 feet wide for the entire 0.69-mile length of the pipeline segment through the State of Texas Lands. The total area inspected during the cultural resources survey of the State of Texas Lands was 8.43 acres (3.41 hectares). The survey of the State of Texas property was completed under Texas Antiquities Permit No. 9017. The cultural resources field investigation on State of Texas Lands occurred on August 2 and 3, 2018 by J. Matthew Oliver and Gary D. Edington and consisted of an intensive pedestrian survey utilizing transects not spaced greater than 15 meters apart with shovel tests. The field investigation was conducted in accordance with the Texas Historical Commission (THC) Archeological Survey Standards for Texas. The entire project was supervised by Gary D. Edington, an ENERCON archeologist who meets the U.S. Secretary of the Interior’s Professional Qualification Standards for archeology as set forth in 36 CFR 61. The cultural resources survey resulted in the observation of two isolated finds (IF). IF#8 is a single lithic flake of brown chert observed on the surface in the east tract of State of Texas Lands. IF#9 is a small bulldozer push-pile of old wooden fence posts and barbed wire observed adjacent to the east fence line of the east tract of Texas State lands. IF#8 and IF#9 lack information potential and are not eligible for the National Register of Historic Places (NRHP) or State Antiquities Landmarks (SAL). The cultural resources survey did not result in finding any additional historic or prehistoric artifacts, features, cultural lenses, or sites over 50 years of age on State of Texas Lands. No archeological sites were encountered, and no artifacts were collected. Therefore, it is recommended that the project will have no effect on any cultural resources that may qualify for inclusion to the NRHP on State of Texas Lands. No further cultural resources investigations are recommended prior to construction of the proposed Waha II Pipeline project on State of Texas Lands. If cultural material, including sites, features, or artifacts that are 50 years old or older are encountered within the ROW during construction of this project, work in the area must cease and the regional THC Archeologist must be immediately be notified

    Final Cultural Resources Report of the Salt Creek Midstream, LLC Proposed Olifant Eight Inch Pipeline Project on University Lands in Ward County, Texas

    Get PDF
    Enercon Services, Inc. (ENERCON), in support of Salt Creek Midstream, LLC, conducted an intensive archeological survey for the proposed Olifant Eight Inch Pipeline Project located near Pyote in Ward County, Texas. The proposed project consists of the construction of an approximately 800 foot (244 m) long eight inch steel pipeline on University Lands, extending from a tie-in at an existing well pad, trending generally south-southeast to a tie-in on the existing Quito Draw pipeline. The Olifant Eight Inch Pipeline Project area is mapped on the United States Geological Survey (USGS) Soda Lake NE, Texas (1967, photorevised 1981) 7.5 Minute Quadrangle map. The construction corridor consists of a 50 foot (15 m) wide permanent pipeline right-of-way (ROW) and a 50 foot (15 m) wide temporary workspace corridor. The cultural resources survey corridor and the area of potential effect (APE) was 100 feet (30 m) wide for the entire 800 foot (244 m) length of the proposed Olifant Eight Inch Pipeline Project, totaling 1.84 acres (.74 hectares). The proposed project is entirely on University Lands, a political subdivision of the State of Texas. The archeological survey was completed under Texas Antiquities Permit No. 9012. The cultural resources field investigation on University Lands was conducted on February 26, 2019 by ENERCON archeologist Gary Edington, who meets the U.S. Secretary of the Interior’s Professional Qualification Standards for archeology as set forth in 36 CFR 61, and consisted of an intensive pedestrian survey utilizing transects spaced no greater than 15 m apart, with shovel tests in areas which had the potential for buried cultural resources. The field investigation was conducted in accordance with the Texas Historical Commission (THC) Archeological Survey Standards for Texas. The entire project was supervised by Michael Margolis, an ENERCON archeologist who meets the U.S. Secretary of the Interior’s Professional Qualification Standards for archeology as set forth in 36 CFR 61. The cultural resources survey did not result in finding any historic or prehistoric artifacts, features, cultural lenses, or sites over 50 years of age on University Lands. Therefore, it is recommended that the project will have no effect on any historic property that may qualify for inclusion in the National Register of Historic Places (NRHP) on University Lands. No further cultural resources investigations are recommended prior to construction of the proposed Olifant Eight Inch Pipeline Project on University Lands. If cultural material, including sites, features, or artifacts that are 50 years old or older are encountered within the ROW during construction of this project, work in the area must cease and the THC must be immediately be notified

    Cultural Resources Report for the Salt Creek Midstream, LLC Proposed Quito Draw Pipeline Project on University Lands, UT System Property in Ward County, Texas

    Get PDF
    Enercon Services, Inc. (ENERCON), in support of Salt Creek Midstream, LLC, conducted an intensive archeological survey for the proposed Quito Draw Pipeline Project. The proposed pipeline is approximately 19.3 miles (31.1 km) in length, located near Barstow and Pyote, Texas in Ward County. This report encompasses only the University Lands, UT System property segment of the proposed Quito Draw Pipeline Project which is approximately 11.8 miles (19.0km) in length. The University Lands, UT System property segment of the project area is depicted on the United States Geological Survey (USGS) Wink South, Tex. (1968), Soda Lake NE, Tex. (1968), and Soda Lake SE, Tex. (1968) 7.5 Minute Quadrangle maps. The construction corridor consists of a 50 foot (15m) wide permanent pipeline right-of-way (ROW) and a 50 foot (15m) wide temporary workspace corridor. The entire 50 foot (15m) wide ROW will be cleared of vegetation and the eight-inch gas pipeline will be installed in an open cut trench. The cultural resources survey corridor and area of potential effect (APE) was 100 foot (30m) wide for the entire 11.8 mile (19.0km) length of the pipeline segment through the University Lands, UT System property segment of the project, for a total of 143.03 acres (57.88 hectares). The survey of the University Lands, UT System, a political subdivision of the State of Texas, property, was completed under Texas Antiquities Permit No. 9011. The initial cultural resources field investigation on University Lands, UT System property was conducted October 7, 2018 to October 9, 2018 by Christopher Flowers and Gary D. Edington and consisted of an intensive pedestrian survey utilizing transects spaced no greater than 15m apart with shovel tests in areas which had the potential for buried cultural resources. The field investigation was conducted in accordance with the Texas Historical Commission (THC) Archeological Survey Standards for Texas. The entire project was supervised by Gary D. Edington, an ENERCON archeologist who meets the U.S. Secretary of the Interior’s Professional Qualification Standards for archeology as set forth in 36 CFR 61. The initial cultural resources investigation of the proposed Quito Draw Pipeline Project on University Lands, UT System property resulted in the observation of one isolated find (IF). IF#1 consists of a mottled pink and white tertiary chert flake. Ground Surface Visibility (GSV) at the location of IF#1 averaged around 65 percent. Five shovel tests were excavated in the vicinity of IF#1, all of which were negative for cultural resources. A pedestrian survey grid at 3-5m intervals at the location of IF#1 failed to identify any additional cultural materials and the location was noted as an isolated find. IF#1 lacks important information potential and is not recommended as eligible for the National Register of Historic Places (NRHP) or designation as a State Antiquities Landmark (SAL), and no further work is recommended at the location of IF#1. Prior to the initial survey, a site file check was conducted which resulted in the determination that no previously recorded sites are within the APE, or within 1-mile of the APE on University Lands, UT System property. Unfortunately, the Atlas was updated after the site file check was completed. A post facto site file check was conducted which resulted in the determination that seven previously recorded sites are recorded within 1-mile of the APE. Two of which, 41WR106 and 41WR107, are recorded within the APE and were partially impacted by the construction of the Quito Draw Pipeline on University Lands, UT System property. The field crew did not know 41WR106 and 41WR107 were recorded adjacent to the APE prior to fieldwork and these site locations were not observed during the initial survey. Prior to this Cultural Resources Report being presented to THC construction began on both the Quito Draw and Olifant 12-Inch pipelines. Thus, a post facto revisit of 41WR106 and 41WR107 was conducted on February 22, 2020 by J. Matthew Oliver and Gary D. Edington to assess the impact damage to both sites. Both sites, 41WR106 and 41WR107 were negatively impacted by the construction of the Quito Draw and Olifant 12-inch Pipelines on University Lands, UT System property. At site 41WR106 it appears that less than two percent of the previously recorded site area has been destroyed while at site 41WR107 it appears that approximately four percent of the site has been destroyed by the clearing of the Quito Draw and Olifant 12-inch pipelines. The cultural resources investigations did not result in finding any additional historic or prehistoric artifacts, features, cultural lenses, or sites over 50 years of age on University Lands, UT System property. Therefore, it is recommended that the project will have no effect on any additional historic property that may qualify for inclusion in the NRHP or determination as a SAL on University Lands, UT System property. No further cultural resources investigations are recommended for the Quito Draw Pipeline Project on University Lands, UT System property. If cultural material, including sites, features, or artifacts that are 50 years old or older are encountered within the ROW during maintenance activities of the Quito Draw and Olifant Pipelines on University Lands, UT System property, work in the area must cease and the THC (512-463- 5853) must be immediately be notified

    Cultural Resources Report For The Salt Creek Midstream, LLC Proposed Halcon Pipeline On Texas General Land Office Lands In Reeves County, Texas

    Get PDF
    Enercon Services, Inc. (ENERCON), in support of Salt Creek Midstream, LLC, conducted an intensive cultural resources survey for the proposed Halcon Pipeline. The proposed pipeline is approximately 43.3 miles (69.7 km) in length and located near Pecos, Texas in Ward and Reeves counties. This report encompasses only the portion of the proposed Halcon Pipeline located on two tracts of Permanent School Fund land in Reeves County, Texas. The Permanent School Fund is administered by the Texas General Land Office (TGLO), a political subdivision of the State of Texas. The portion of the Halcon Pipeline on TGLO lands is approximately 1.8 miles (2.8 km) in length and depicted on the United States Geological Survey (USGS) Quito Draw, Tex. (1963, Photorevised 1981), Old X Ranch, Tex. (1963, Photorevised 1981), Toyah Lake, Tex. (1963) 7.5 Minute Quadrangle maps. The construction corridor consists of a 50 feet (15 m) wide permanent pipeline right-of-way (ROW) and an additional 50 feet (15 m) wide temporary workspace corridor. The cultural resources survey area of potential effect (APE) consists of the 1.8 mile (2.8 km) by 100 feet (30 m) corridor, totaling 21.3 acres (8.6 hectares). The cultural resources investigation is intended to assist in adhering to the 1969 Antiquities Code of Texas and the cultural resources survey on TGLO lands was completed under Texas Antiquities Permit No. 8275. The entire project was supervised by Michael M. Margolis, an ENERCON archeologist who meets the U.S. Secretary of the Interior’s Professional Qualification Standards for archeology as set forth in 36 CFR 61. Prior to the survey, a search of the Texas Archeological Sites Atlas (the Atlas) was conducted by Michael M. Margolis to locate previously recorded archeological sites, archeological surveys, National Register of Historic Places (NRHP) properties, and State Antiquities Landmarks (SALs). Based on the Atlas, one site, 41RV60, has been previously recorded within 1-mile of the APE on TGLO lands. Site 41RV60 is an Early Archaic lithic scatter recorded by URS Corporation in March 2014 and was determined ineligible for listing on the NRHP by the State Historic Preservation Officer (SHPO) on April 8, 2014. Site 41RV60 is located approximately 4,500 feet (1,372 m) from the APE and will not be impacted by construction of the proposed Halcon Pipeline. Two archeological surveys or studies are mapped within 1-mile of the APE on TGLO lands. The cultural resources survey of the Halcon Pipeline APE on TGLO lands was conducted December 1-2, 2017 by Julie Wasinger and Gary D. Edington, ENERCON archeologists who meet the U.S. Secretary of the Interior’s Professional Qualification Standards for archeology as set forth in 36 CFR 61. Salt Creek Midstream, LLC procedures dictate that all standing structures be avoided during construction. Fieldwork was conducted in accordance with the Texas Historical Commission (THC) Archeological Survey Standards for Texas. The cultural resources survey of the Halcon Pipeline APE did not result in finding any historic or prehistoric artifacts, features, cultural lenses, or sites and no artifacts were collected on TGLO lands. Therefore, it is recommended that construction of the proposed Halcon Pipeline on TGLO lands will have no effect on any historic property that may qualify for inclusion on the NRHP or SAL listings. No further cultural resources investigations are recommended prior to construction of the proposed Halcon Pipeline on TGLO lands. If cultural material, including sites, features, or artifacts that are 50 years old or older are encountered within the APE during construction of the Halcon Pipeline on TGLO lands, work in the area must cease and the regional THC Archeologist (512-463-6096) must be notified immediately

    Integrated Gut and Liver Microphysiological Systems for Quantitative In Vitro Pharmacokinetic Studies

    Get PDF
    Investigation of the pharmacokinetics (PK) of a compound is of significant importance during the early stages of drug development, and therefore several in vitro systems are routinely employed for this purpose. However, the need for more physiologically realistic in vitro models has recently fueled the emerging field of tissue-engineered 3D cultures, also referred to as organs-on-chips, or microphysiological systems (MPSs). We have developed a novel fluidic platform that interconnects multiple MPSs, allowing PK studies in multi-organ in vitro systems along with the collection of high-content quantitative data. This platform was employed here to integrate a gut and a liver MPS together in continuous communication, and investigate simultaneously different PK processes taking place after oral drug administration in humans (e.g., intestinal permeability, hepatic metabolism). Measurement of tissue-specific phenotypic metrics indicated that gut and liver MPSs can be fluidically coupled with circulating common medium without compromising their functionality. The PK of diclofenac and hydrocortisone was investigated under different experimental perturbations, and results illustrate the robustness of this integrated system for quantitative PK studies. Mechanistic model-based analysis of the obtained data allowed the derivation of the intrinsic parameters (e.g., permeability, metabolic clearance) associated with the PK processes taking place in each MPS. Although these processes were not substantially affected by the gut-liver interaction, our results indicate that inter-MPS communication can have a modulating effect (hepatic metabolism upregulation). We envision that our integrative approach, which combines multi-cellular tissue models, multi-MPS platforms, and quantitative mechanistic modeling, will have broad applicability in pre-clinical drug development.United States. Defense Advanced Research Projects Agency (Grant W911NF-12-2- 0039)National Institutes of Health (U.S.) (Grant 4-UH3-TR000496-0

    Assessment of possible impact of a health promotion program in Korea from health risk trends in a longitudinally observed cohort

    Get PDF
    BACKGROUND: Longitudinally observed cohort data can be utilized to assess the potential for health promotion and healthcare planning by comparing the estimated risk factor trends of non-intervened with that of intervened. The paper seeks (1) to estimate a natural transition (patterns of movement between states) of health risk state from a Korean cohort data using a Markov model, (2) to derive an effective and necessary health promotion strategy for the population, and (3) to project a possible impact of an intervention program on health status. METHODS: The observed transition of health risk states in a Korean employee cohort was utilized to estimate the natural flow of aggregated health risk states from eight health risk measures using Markov chain models. In addition, a reinforced transition was simulated, given that a health promotion program was implemented for the cohort, to project a possible impact on improvement of health status. An intervened risk transition was obtained based on age, gender, and baseline risk state, adjusted to match with the Korean cohort, from a simulated random sample of a US employee population, where a health intervention was in place. RESULTS: The estimated natural flow (non-intervened), following Markov chain order 2, showed a decrease in low risk state by 3.1 percentage points in the Korean population while the simulated reinforced transition (intervened) projected an increase in low risk state by 7.5 percentage points. Estimated transitions of risk states demonstrated the necessity of not only the risk reduction but also low risk maintenance. CONCLUSIONS: The frame work of Markov chain efficiently estimated the trend, and captured the tendency in the natural flow. Given only a minimally intense health promotion program, potential risk reduction and low risk maintenance was projected

    Integration of systems biology with organs-on-chips to humanize therapeutic development

    Get PDF
    "Mice are not little people" - a refrain becoming louder as the gaps between animal models and human disease become more apparent. At the same time, three emerging approaches are headed toward integration: powerful systems biology analysis of cell-cell and intracellular signaling networks in patient-derived samples; 3D tissue engineered models of human organ systems, often made from stem cells; and micro-fluidic and meso-fluidic devices that enable living systems to be sustained, perturbed and analyzed for weeks in culture. Integration of these rapidly moving fields has the potential to revolutionize development of therapeutics for complex, chronic diseases, including those that have weak genetic bases and substantial contributions from gene-environment interactions. Technical challenges in modeling complex diseases with "organs on chips" approaches include the need for relatively large tissue masses and organ-organ cross talk to capture systemic effects, such that current microfluidic formats often fail to capture the required scale and complexity for interconnected systems. These constraints drive development of new strategies for designing in vitro models, including perfusing organ models, as well as "mesofluidic" pumping and circulation in platforms connecting several organ systems, to achieve the appropriate physiological relevance. Keywords: organs-on-chips; 3D liver culture; perfusion; drug development; inflammation; organ crosstalk; tissue chip; intestineUnited States. Defense Advanced Research Projects Agency (Award W911NF-12-2- 0039))National Institutes of Health (U.S.) (Grant UH3TR000496

    The influence of transition metal solutes on dislocation core structure and values of Peierls stress and barrier in tungsten

    Full text link
    Several transition metals were examined to evaluate their potential for improving the ductility of tungsten. The dislocation core structure and Peierls stress and barrier of 1/21/2 screw dislocations in binary tungsten-transition metal alloys (W1x_{1-x}TMx_{x}) were investigated using first principles electronic structure calculations. The periodic quadrupole approach was applied to model the structure of 1/21/2 dislocation. Alloying with transition metals was modeled using the virtual crystal approximation and the applicability of this approach was assessed by calculating the equilibrium lattice parameter and elastic constants of the tungsten alloys. Reasonable agreement was obtained with experimental data and with results obtained from the conventional supercell approach. Increasing the concentration of a transition metal from the VIIIA group, i.e. the elements in columns headed by Fe, Co and Ni, leads to reduction of the CC^\prime elastic constant and increase of elastic anisotropy A=C44/CC_{44}/C^\prime. Alloying W with a group VIIIA transition metal changes the structure of the dislocation core from symmetric to asymmetric, similar to results obtained for W1x_{1-x}Rex_{x} alloys in the earlier work of Romaner {\it et al} (Phys. Rev. Lett. 104, 195503 (2010))\comments{\cite{WRECORE}}. In addition to a change in the core symmetry, the values of the Peierls stress and barrier are reduced. The latter effect could lead to increased ductility in a tungsten-based alloy\comments{\cite{WRECORE}}. Our results demonstrate that alloying with any of the transition metals from the VIIIA group should have similar effect as alloying with Re.Comment: 12 pages, 8 figures, 3 table
    corecore