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Sample records for pressure 7.5x10-3 7.5 torr

  1. High Pressure Mass Spectrometry: The Generation of Mass Spectra at Operating Pressures Exceeding 1 Torr in a Microscale Cylindrical Ion Trap.

    PubMed

    Blakeman, Kenion H; Wolfe, Derek W; Cavanaugh, Craig A; Ramsey, J Michael

    2016-05-17

    We present the first demonstration of high pressure mass spectrometry (HPMS), which we define as mass spectrometry performed at pressures greater than 100 mTorr. Mass analysis is shown at operational pressures exceeding 1 Torr of helium buffer gas. A differentially pumped MS system was constructed for HPMS development consisting of two chambers. The first chamber (mass analysis chamber) was operated at pressures up to 1.2 Torr and contained the ionization source and a microscale cylindrical ion trap (CIT) mass analyzer. The CIT had critical dimensions of r0 = 500 μm and z0 = 650 μm. The second chamber was held at a lower pressure (≤10 mTorr) and contained an electron multiplier for detection. Mass spectra for xenon, 2-chloroethyl ethyl sulfide (CEES), and octane were acquired with helium buffer gas pressures ranging from 0.04 to 1.2 Torr in the mass analysis chamber. Full-width at half-maximum of mass spectral peaks was found to increase 143% for xenon, 40% for CEES, and 77% for octane over this pressure range, with maximum peak widths of 1.19, 1.26, and 0.82 Da, respectively. Data were fitted with an algebraic model that factors in ion-neutral collision peak broadening effects at high pressures. Experimental and theoretical peak broadening slopes showed good agreement at buffer gas pressures greater than 0.2 Torr. Experiments presented here demonstrate mass spectrometry at pressures orders of magnitude higher than conventionally practiced with any type of mass analyzer. The use of HPMS provides a way to eliminate turbo pumping requirements, leading to significant reduction in MS system size, weight, and power and facilitating a path toward compact/hand-held mass spectrometers with numerous potential applications. PMID:27109864

  2. Effect and mechanism of Salicornia bigelovii Torr. plant salt on blood pressure in SD rats.

    PubMed

    Zhang, Shumeng; Wei, Mingqian; Cao, Chunjie; Ju, Yaoyao; Deng, Yanqun; Ye, Tianwen; Xia, Zufeng; Chen, Meizhen

    2015-03-01

    In this paper, the effect and mechanism of Salicornia bigelovii Torr. plant salt (SPS) on blood pressure in Sprague Dawley (SD) rats were investigated. The results showed that the edible salt induced hypertension, but the SPS did not. Organ indices and Hematoxylin-Eosin (HE) staining analysis indicated that SPS had a protective effect on the kidney and liver. In comparison with the edible salt-treated group, nitric oxide (NO) content, angiotensin-II (Ang-II) and endothelin-1 (ET-1) levels in the serum of the SPS-treated group had no obvious changes, but serum creatinine concentration significantly decreased. Moreover, superoxide dismutase (SOD) and Na(+)-K(+)-ATPase activity increased while malondialdehyde (MDA) content decreased in the SPS-treated group. In conclusion, a long-term high salt intake could lead to hypertension. SPS, as a salt substitute, could increase the body's antioxidant ability to protect the kidney and liver from the damage caused by a high salt intake and effectively avoid the occurrence of hypertension. PMID:25631641

  3. Measured and predicted temperature profiles along MEMS bridges at pressures from 0.05 to 625 torr.

    SciTech Connect

    Gallis, Michail A.; Torczynski, John Robert; Piekos, Edward Stanley; Serrano, Justin Raymond; Gorby, Allen D.; Phinney, Leslie Mary

    2010-10-01

    We will present experimental and computational investigations of the thermal performance of microelectromechanical systems (MEMS) as a function of the surrounding gas pressure. Lowering the pressure in MEMS packages reduces gas damping, providing increased sensitivity for certain MEMS sensors; however, such packaging also dramatically affects their thermal performance since energy transfer to the environment is substantially reduced. High-spatial-resolution Raman thermometry was used to measure the temperature profiles on electrically heated, polycrystalline silicon bridges that are nominally 10 microns wide, 2.25 microns thick, 12 microns above the substrate, and either 200 or 400 microns long in nitrogen atmospheres with pressures ranging from 0.05 to 625 Torr. Finite element modeling of the thermal behavior of the MEMS bridges is performed and compared to the experimental results. Noncontinuum gas effects are incorporated into the continuum finite element model by imposing temperature discontinuities at gas-solid interfaces that are determined from noncontinuum simulations. The experimental and simulation results indicate that at pressures below 0.5 Torr the gas-phase heat transfer is negligible compared to heat conduction through the thermal actuator legs. As the pressure increases above 0.5 Torr, the gas-phase heat transfer becomes more significant. At ambient pressures, gas-phase heat transfer drastically impacts the thermal performance. The measured and simulated temperature profiles are in qualitative agreement in the present study. Quantitative agreement between experimental and simulated temperature profiles requires accurate knowledge of temperature-dependent thermophysical properties, the device geometry, and the thermal accommodation coefficient.

  4. Stand-off laser-induced breakdown spectroscopy of aluminum and geochemical reference materials at pressure below 1 torr

    NASA Astrophysics Data System (ADS)

    Lee, Kang-Jae; Choi, Soo-Jin; Yoh, Jack J.

    2014-11-01

    Laser-induced breakdown spectroscopy (LIBS) is an atomic emission spectroscopy that utilizes a highly irradiated pulse laser focused on the target surface to produce plasma. We obtain spectroscopic information from the microplasma and determine the chemical composition of the sample based on its elemental and molecular emission peaks. We develop a stand-off LIBS system to analyze the effect of the remote sensing of aluminum and various geochemical reference materials at pressures below 1 torr. Using a commercial 4 inch refracting telescope, our stand-off LIBS system is configured at a distance of 7.2 m from the four United States Geological Survey (USGS) geochemical samples that include granodiorite, quartz latite, shale-cody, and diabase, which are selected for planetary exploration. Prepared samples were mixed with a paraffin binder containing only hydrogen and carbon, and were pelletized for experimental convenience. The aluminum plate sample is considered as a reference prior to using the geochemical samples in order to understand the influence of a low pressure condition on the resulting LIBS signal. A Q-switched Nd:YAG laser operating at 1064 nm and pulsed at 10 Hz with 21.7 to 48.5 mJ/pulse was used to obtain signals, which showed that the geochemical samples were successfully detected by the present stand-off detection scheme. A low pressure condition generally results in a decrease of the signal intensity, while the signal to noise ratio can vary according to the samples and elements of various types. We successfully identified the signals at below 1 torr with stand-off detection by a tightly focused light detection and by using a relatively larger aperture telescope. The stand-off LIBS detection at low pressure is promising for potential detection of the minor elements at pressures below 1 torr.

  5. LIBS-based detection of geological samples at low pressures (<0.001 torr) for moon and asteroid exploration.

    SciTech Connect

    Harris, R. D.; Cremers, D. A.; Khoo, C.; Benelli, K. M.

    2005-01-01

    LIBS is under development for future use on surface probes to Mars. Under simulated Mars atmospheric composition and pressure (7 torr, predominately CO{sub 2}), LIBS has been shown useful for qualitative and quantitative analysis of geological samples at close and stand-off distances (19 m). Because of its many advantages compared to previously deployed and current in-use methods of elemental analysis (e.g. x-ray fluorescence, APXS), LIBS has potential for application to other planetary bodies. Of particular interest are the Moon and asteroids having very low ambient gas pressures at the surface. Because the laser plasma used by LIBS is sensitive to the surrounding atmosphere, it is important to determine analysis capabilities under these conditions. The results of a study of LIBS capabilities at low pressure is presented here for both in-situ and stand-off analysis.

  6. Centrifugal bubble O{sub 2} ({sup 1{Delta}}) gas generator with a total pressure of 100 Torr

    SciTech Connect

    Zagidulin, M V; Nikolaev, V D; Svistun, M I; Khvatov, N A

    2008-08-31

    A centrifugal bubbling singlet-oxygen gas generator is developed in which chlorine with helium are injected into the rotating layer of the alkali solution of hydrogen peroxide through cylindrical nozzles directed at an angle of 30{sup 0} to the bubbler surface. The concentrations of water vapour and O{sub 2} ({sup 1{Delta}}) and the gas temperature were determined by using the multichannel recording of the emission bands of oxygen at 634, 703, 762 and 1268 nm. For the chlorine and helium flow rates of 60 and 90 mmol s{sup -1}, respectively, the specific chlorine load of 3.2 mmol cm{sup -2}, a total pressure of 100 Torr in the working region of the gas generator and the oxygen partial pressure of 36 Torr, the chlorine utilisation was 90% and the content of O{sub 2} ({sup 1{Delta}}) was {approx}60%. For the ratio of the flow rates of chlorine and the alkali solution of hydrogen peroxide equal to 1 mol L{sup -1}, the water vapour content was {approx}25%. The chemical efficiency of the oxygen-iodine laser with this gas generator achieved 23% for the specific power of 12.7 W cm per 1 cm{sup 3} s{sup -1} per pass of the solution through the gas generator. (laser applications and other topics in quantum electronics)

  7. Angle-resolved environmental X-ray photoelectron spectroscopy: A new laboratory setup for photoemission studies at pressures up to 0.4 Torr

    SciTech Connect

    Mangolini, F.; Wabiszewski, G. E.; Egberts, P.; Ahlund, J.; Backlund, K.; Karlsson, P. G.; Adiga, V. P.; Streller, F.; Wannberg, B.; Carpick, R. W.

    2012-09-15

    The paper presents the development and demonstrates the capabilities of a new laboratory-based environmental X-ray photoelectron spectroscopy system incorporating an electrostatic lens and able to acquire spectra up to 0.4 Torr. The incorporation of a two-dimensional detector provides imaging capabilities and allows the acquisition of angle-resolved data in parallel mode over an angular range of 14 Degree-Sign without tilting the sample. The sensitivity and energy resolution of the spectrometer have been investigated by analyzing a standard Ag foil both under high vacuum (10{sup -8} Torr) conditions and at elevated pressures of N{sub 2} (0.4 Torr). The possibility of acquiring angle-resolved data at different pressures has been demonstrated by analyzing a silicon/silicon dioxide (Si/SiO{sub 2}) sample. The collected angle-resolved spectra could be effectively used for the determination of the thickness of the native silicon oxide layer.

  8. Pressure distribution data from tests of 2.29-meter (7.5-ft.) span EET high-lift research model in Langley 4- by 7-meter tunnel

    NASA Technical Reports Server (NTRS)

    Morgan, H. L., Jr.

    1982-01-01

    A 2.29 m (7.5 ft.) span high-lift research model equipped with full-span leading-edge slat and part-span double-slotted trailing-edge flap was tested in the Langley 4- by 7-Meter Tunnel to determine the low speed performance characteristics of a representative high aspect ratio suprcritical wing. These tests were performed in support of the Energy Efficient Transport (EET) program which is one element of the Aircraft Energy Efficiency (ACEE) project. Static longitudinal forces and moments and chordwise pressure distributions at three spanwise stations were measured for cruise, climb, two take-off flap, and two landing flap wing configurations. The tabulated and plotted pressure distribution data is presented without analysis or discussion.

  9. Muir-Torre Syndrome

    PubMed Central

    Feser, Christina; Grekin, Steven

    2016-01-01

    Muir-Torre syndrome is a rare, autosomal dominant genodermatosis characterized by the presence of at least one sebaceous gland neoplasm, associated with an underlying visceral malignancy. Muir-Torre syndrome is believed to be a subtype of Lynch Syndrome. Affected individuals are found to have germline mutations predominantly in DNA mismatch repair gene MSH2, and much less frequently, MLH1. The authors report the case of a 55-year-old woman presenting with multiple cutaneous neoplasms including sebaceoma, basal cell carcinoma, and squamous cell carcinoma; personal history of colorectal and endometrial cancer; and family history of colorectal cancer; found to have a deletion at mismatch repair gene MLH1. It is important to recognize the role of these less common gene deletions in producing the Muir-Torre syndrome phenotype, and consider the correlation of cutaneous manifestations with internal disease. The authors discuss the clinical presentation of Muir-Torre syndrome, methods of diagnosis, and the importance of regular medical surveillance to detect and prevent disease progression in Muir-Torre syndrome patients and their family members. PMID:26962393

  10. Vibrational distribution of nitrogen molecules in the C{sup 3}{Pi}{sub u} state in a near-surface microwave plasma in nitrogen at pressures of 1-5 Torr

    SciTech Connect

    Lebedev, Yu. A. Epshtein, I. L.; Yusupova, E. V.

    2013-02-15

    The radiation of the second positive nitrogen system has been used to study the spatial dependence of the vibrational distribution of nitrogen molecules in the C{sup 3}{Pi}{sub u} state in the near-surface plasma layer of an electrode microwave discharge in nitrogen at pressures of 1-5 Torr. It has been shown that the vibrational distribution changes at a scale of 100 {mu}m. It has been concluded that this state is populated owing to the electron impact from the ground state. The possibility of using the local approximation for the electron energy distribution function to explain the experimental results has been analyzed.

  11. Pressure distribution data from tests of 2.29 M (7.5 feet) span EET high-lift transport aircraft model in the Ames 12-foot pressure tunnel

    NASA Technical Reports Server (NTRS)

    Kjelgaard, S. O.; Morgan, H. L., Jr.

    1983-01-01

    A high-lift transport aircraft model equipped with full-span leading-edge slat and part-span double-slotted trailing-edge flap was tested in the Ames 12-ft pressure tunnel to determine the low-speed performance characteristics of a representative high-aspect-ratio supercritical wing. These tests were performed in support of the Energy Efficient Transport (EET) program which is one element of the Aircraft Energy Efficiency (ACEE) project. Static longitudinal forces and moments and chordwise pressure distributions at three spanwise stations were measured for cruise, climb, two take-off flap, and two landing flap wing configurations. The tabulated and plotted pressure distribution data is presented without analysis or discussion.

  12. A cryptic microbial community persists within micropropagated Bouteloua eriopoda (Torr.) Torr. cultures

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Higher plants are ubiquitously colonized with fungal endophytes, which often lack readily detectable structures. This study examines the diverse endophyte population within a single line of micropropagated Bouteloua eriopoda (Torr.) Torr., using microscopy and comparison of internal spacer (ITS) ge...

  13. 47 CFR 7.5 - General Obligations.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 47 Telecommunication 1 2014-10-01 2014-10-01 false General Obligations. 7.5 Section 7.5 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL ACCESS TO VOICEMAIL AND INTERACTIVE MENU SERVICES AND EQUIPMENT BY PEOPLE WITH DISABILITIES Obligations-What Must Covered Entities Do? § 7.5 General...

  14. 47 CFR 7.5 - General Obligations.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false General Obligations. 7.5 Section 7.5 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL ACCESS TO VOICEMAIL AND INTERACTIVE MENU SERVICES AND EQUIPMENT BY PEOPLE WITH DISABILITIES Obligations-What Must Covered Entities Do? § 7.5 General...

  15. 47 CFR 7.5 - General Obligations.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 47 Telecommunication 1 2013-10-01 2013-10-01 false General Obligations. 7.5 Section 7.5 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL ACCESS TO VOICEMAIL AND INTERACTIVE MENU SERVICES AND EQUIPMENT BY PEOPLE WITH DISABILITIES Obligations-What Must Covered Entities Do? § 7.5 General...

  16. 47 CFR 7.5 - General Obligations.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 47 Telecommunication 1 2012-10-01 2012-10-01 false General Obligations. 7.5 Section 7.5 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL ACCESS TO VOICEMAIL AND INTERACTIVE MENU SERVICES AND EQUIPMENT BY PEOPLE WITH DISABILITIES Obligations-What Must Covered Entities Do? § 7.5 General...

  17. 47 CFR 7.5 - General Obligations.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 47 Telecommunication 1 2011-10-01 2011-10-01 false General Obligations. 7.5 Section 7.5 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL ACCESS TO VOICEMAIL AND INTERACTIVE MENU SERVICES AND EQUIPMENT BY PEOPLE WITH DISABILITIES Obligations-What Must Covered Entities Do? § 7.5 General...

  18. 42 CFR 7.5 - Payment procedures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Payment procedures. 7.5 Section 7.5 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL PROVISIONS DISTRIBUTION OF REFERENCE BIOLOGICAL STANDARDS AND BIOLOGICAL PREPARATIONS § 7.5 Payment procedures. The requester...

  19. 42 CFR 7.5 - Payment procedures.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 1 2011-10-01 2011-10-01 false Payment procedures. 7.5 Section 7.5 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL PROVISIONS DISTRIBUTION OF REFERENCE BIOLOGICAL STANDARDS AND BIOLOGICAL PREPARATIONS § 7.5 Payment procedures. The requester...

  20. 42 CFR 7.5 - Payment procedures.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 1 2012-10-01 2012-10-01 false Payment procedures. 7.5 Section 7.5 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES GENERAL PROVISIONS DISTRIBUTION OF REFERENCE BIOLOGICAL STANDARDS AND BIOLOGICAL PREPARATIONS § 7.5 Payment procedures. The requester...

  1. 22 CFR 19.7-5 - Limitations.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Limitations. 19.7-5 Section 19.7-5 Foreign Relations DEPARTMENT OF STATE PERSONNEL BENEFITS FOR SPOUSES AND FORMER SPOUSES OF PARTICIPANTS IN THE FOREIGN SERVICE RETIREMENT AND DISABILITY SYSTEM § 19.7-5 Limitations. (a) A spousal agreement may...

  2. 22 CFR 19.7-5 - Limitations.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false Limitations. 19.7-5 Section 19.7-5 Foreign Relations DEPARTMENT OF STATE PERSONNEL BENEFITS FOR SPOUSES AND FORMER SPOUSES OF PARTICIPANTS IN THE FOREIGN SERVICE RETIREMENT AND DISABILITY SYSTEM § 19.7-5 Limitations. (a) A spousal agreement may...

  3. 42 CFR 7.5 - Payment procedures.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... REFERENCE BIOLOGICAL STANDARDS AND BIOLOGICAL PREPARATIONS § 7.5 Payment procedures. An up-to-date fee... in U.S. dollars at the time that the requester requests the biological reference standard or biological preparation....

  4. 42 CFR 7.5 - Payment procedures.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... REFERENCE BIOLOGICAL STANDARDS AND BIOLOGICAL PREPARATIONS § 7.5 Payment procedures. An up-to-date fee... in U.S. dollars at the time that the requester requests the biological reference standard or biological preparation....

  5. Jaime Torres Bodet: Centenario de su Natalicio (Jaime Torres Bodet: 100th Anniversary of His Birth).

    ERIC Educational Resources Information Center

    Revista Interamericana de Educacion de Adultos, 2002

    2002-01-01

    Articles in this issue, written in Spanish, focus on the following: the philosophy of Jaime Torres Bodet (humanistic vision of adult education; objectives of public education in Mexico; Mexico and the issue of culture; The Mexican National Museum of History; Enrique Gonzalez Martinez, poet of all hours; Marti, Cuba's champion; educational…

  6. Testing the Li-Torr-Chiao Conjecture: A Novel HFGW Detector?

    NASA Astrophysics Data System (ADS)

    Woods, R. C.

    2010-01-01

    In 1992 and 1993, Li and Torr claimed to show that gravitational waves propagate inside a bulk superconductor with phase velocity ˜300 times lower than the free-space value. The present author pointed out that this implies a Fresnel reflection coefficient of almost 100%. Harris and Kowitt have independently claimed that the Li and Torr result is not credible, in which case these conclusions are not correct. However, more recently, Chiao, Wegter-McNelly and Minter have published a calculation taking a completely different approach that appears to repeat the prediction that a superconductor will efficiently reflect HFGW. Their argument concerns a superconductor layer that may even be significantly thinner than the London penetration depth. Their final conclusion, although completely different in derivation and concept, is essentially the same as that of the present author if it were assumed that Li and Torr were correct. Because of the controversy surrounding this result, it is subsequently referred to herein as the Li-Torr-Chiao conjecture. If the Li-Torr-Chiao conjecture were true, superconductors would exhibit by far the greatest interaction known between HFGW and matter. Therefore, it seems timely to examine further consequences of that interaction and whether it could be exploited. The present paper estimates the likely response of a high-Q mechanical resonator coated with a thin superconductor layer. Regardless of the veracity of the Li-Torr-Chiao conjecture, the resonator will be subjected to a periodic force, analogous to electromagnetic radiation pressure. If the Li-Torr-Chiao conjecture is untrue, this force originates from the GW impedance mismatch between vacuum and resonator, which is minimal. However, if the Li-Torr-Chiao conjecture is correct, the magnitude of this force is increased very significantly. Measuring the amplitude of the induced mechanical vibrations indicates the power of the incident HFGW. If the resonator is a piezoelectric device then

  7. Population biology of coral trout species in eastern Torres Strait: Implications for fishery management

    NASA Astrophysics Data System (ADS)

    Williams, Ashley J.; Currey, Leanne M.; Begg, Gavin A.; Murchie, Cameron D.; Ballagh, Aaron C.

    2008-09-01

    Coral trout ( Plectropomus spp.) are the main target species for commercial fishers in the eastern Torres Strait Reef Line Fishery (ETS RLF). The four species of coral trout known to occur in Torres Strait: Plectropomus leopardus, Plectropomus maculatus, Plectropomus areolatus and Plectropomus laevis are currently managed as a single species in Torres Strait, as there is no species-specific biological information available for the region which could be used to assess whether species differ in their response to fishing pressure. The aim of our study was to determine whether it is appropriate (biologically) to manage coral trout in the ETS RLF as a single species group or whether different management arrangements are required for some species. We used catch data and biological data from samples collected by commercial fishers to examine the distribution within Torres Strait and estimate a range of biological parameters for P. leopardus, P. maculatus and P. areolatus. Insufficient P. laevis samples were collected to reliably examine this species. Results indicated that the population biology, particularly the reproductive biology, of P. areolatus was substantially different to both P. leopardus and P. maculatus. Although it is difficult to predict the response to fishing, P. areolatus may be more vulnerable to fishing than P. leopardus and P. maculatus, due to the larger size at sex change observed for this species and the very low proportion of males protected by the current minimum size limit. Therefore, while the common management arrangements for P. leopardus and P. maculatus appear to be adequate for these species, separate management arrangements are needed for the sustainable harvest of P. areolatus populations in the ETS. Specifically, we recommend the introduction of a maximum size limit for P. areolatus, in addition to the current minimum size limit, which may allow a proportion of males some protection from fishing.

  8. 41 CFR 51-7.5 - Environmental information.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 41 Public Contracts and Property Management 1 2013-07-01 2013-07-01 false Environmental information. 51-7.5 Section 51-7.5 Public Contracts and Property Management Other Provisions Relating to... ENVIRONMENTAL ANALYSIS § 51-7.5 Environmental information. Interested parties may contact the Executive...

  9. 41 CFR 51-7.5 - Environmental information.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 41 Public Contracts and Property Management 1 2014-07-01 2014-07-01 false Environmental information. 51-7.5 Section 51-7.5 Public Contracts and Property Management Other Provisions Relating to... ENVIRONMENTAL ANALYSIS § 51-7.5 Environmental information. Interested parties may contact the Executive...

  10. 41 CFR 51-7.5 - Environmental information.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 41 Public Contracts and Property Management 1 2012-07-01 2009-07-01 true Environmental information. 51-7.5 Section 51-7.5 Public Contracts and Property Management Other Provisions Relating to Public... ENVIRONMENTAL ANALYSIS § 51-7.5 Environmental information. Interested parties may contact the Executive...

  11. 41 CFR 51-7.5 - Environmental information.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 41 Public Contracts and Property Management 1 2011-07-01 2009-07-01 true Environmental information. 51-7.5 Section 51-7.5 Public Contracts and Property Management Other Provisions Relating to Public... ENVIRONMENTAL ANALYSIS § 51-7.5 Environmental information. Interested parties may contact the Executive...

  12. 11 CFR 7.5 - Reporting suspected violations.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 11 Federal Elections 1 2010-01-01 2010-01-01 false Reporting suspected violations. 7.5 Section 7.5 Federal Elections FEDERAL ELECTION COMMISSION STANDARDS OF CONDUCT General Provisions § 7.5 Reporting suspected violations. (a) Personnel who have information which causes them to believe that there has been...

  13. 41 CFR 51-7.5 - Environmental information.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 41 Public Contracts and Property Management 1 2010-07-01 2010-07-01 true Environmental information. 51-7.5 Section 51-7.5 Public Contracts and Property Management Other Provisions Relating to Public... ENVIRONMENTAL ANALYSIS § 51-7.5 Environmental information. Interested parties may contact the Executive...

  14. 43 CFR 3106.7-5 - Effect of transfer.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 43 Public Lands: Interior 2 2012-10-01 2012-10-01 false Effect of transfer. 3106.7-5 Section 3106.7-5 Public Lands: Interior Regulations Relating to Public Lands (Continued) BUREAU OF LAND..., Sublease or Otherwise § 3106.7-5 Effect of transfer. A transfer of record title to 100 percent of a...

  15. 43 CFR 7.5 - Permit requirements and exceptions.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 43 Public Lands: Interior 1 2013-10-01 2013-10-01 false Permit requirements and exceptions. 7.5 Section 7.5 Public Lands: Interior Office of the Secretary of the Interior PROTECTION OF ARCHAEOLOGICAL RESOURCES Uniform Regulations § 7.5 Permit requirements and exceptions. (a) Any person proposing to excavate and/or remove archaeological...

  16. 36 CFR 7.5 - Mount Rainier National Park.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 36 Parks, Forests, and Public Property 1 2013-07-01 2013-07-01 false Mount Rainier National Park. 7.5 Section 7.5 Parks, Forests, and Public Property NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR SPECIAL REGULATIONS, AREAS OF THE NATIONAL PARK SYSTEM § 7.5 Mount Rainier National Park. (a) Fishing. (1) The following waters are closed...

  17. The role of immunohistochemistry in the Muir-Torre Syndrome*

    PubMed Central

    Oliveira, Cláudia Marina Puga Barbosa; de Campos, Jullyene Gomes; Maia, Maiko Ramacos; Lobo, Larissa Eva dos Santos; do Valle, Fábio Francesconi

    2015-01-01

    Muir-Torre Syndrome is defined by the coexistence of sebaceous skin tumors and internal malignancies. Mutations in the DNA mismatch repair genes are found in the inherited form of the disease, resulting in the absence of crucial enzymes involved with DNA replication process. This case describes a patient with sebaceous adenoma and colorectal carcinoma, meeting the criteria for Muir-Torre Syndrome. The immunohistochemical analysis of the skin lesion was an important tool to confirm the diagnosis, as it revealed nuclear negativity for MSH2 and MSH6. PMID:26312706

  18. Torres Strait Islanders and Australian Nationhood: Some Educational Perspectives.

    ERIC Educational Resources Information Center

    Williamson, Alan

    1992-01-01

    Analyzes the role of education in incorporating Australia's Melanesian minority, the Torres Strait Islanders, into the Australian nation. Reviews education on the Strait Islands from 1892 to 1985, focusing on issues related to educational standards, the inclusion of islanders within legislative provisions for Aborigines, immigration, and…

  19. The dwarf saltwort (Salicornia bigelovii Torr.): Evaluation of breeding populations

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Breeding populations of the dwarf saltwort (Salicornia bigelovii Torr. [Chenopodiaceae]) have been evaluated under high seawater salinity (45 dS m-1) for phenotypic, morphometric, biomass and seed traits in an effort to select suitable families and genotypes within families for breeding purposes and...

  20. Primary Health Networks and Aboriginal and Torres Strait Islander health.

    PubMed

    Couzos, Sophia; Delaney-Thiele, Dea; Page, Priscilla

    2016-04-01

    The Australian Government has established that the health of Aboriginal and Torres Strait Islander peoples is a priority for the newly established 31 Primary Health Networks (PHNs). Efforts to reduce the high hospitalisation rates of Aboriginal people will require PHNs to build formal participatory structures with Aboriginal health organisations to support best practice service models. There are precedents as to how PHNs can build formal partnerships with Aboriginal community controlled health services (ACCHSs), establish an Aboriginal and Torres Strait Islander steering committee to guide strategic plan development, and work towards optimising comprehensive primary care. All health services within PHN boundaries can be supported to systematically and strategically improve their responsiveness to Aboriginal and Torres Strait Islander people by assessing systems of care, adopting best practice models, embedding quality assurance activity, and participating in performance reporting. PHNs can be guided to adopt an Aboriginal and Torres Strait Islander-specific quality improvement framework, agree to local performance measures, review specialist and other outreach services to better integrate with primary health care, enhance the cultural competence of services, and measure and respond to progress in reducing potentially preventable hospitalisations. Through collaborations and capacity building, PHNs can transition certain health services towards greater Aboriginal community control. These proposals may assist policy makers to develop organisational performance reporting on PHN efforts to close the gap in Aboriginal health disparity. PMID:27031397

  1. Performance evaluation of a Loeb-Eiber mass filter at 1 Torr.

    PubMed

    Hoffmann, William D; Jin, Feng; Pedder, Randall E; Taormina, Christopher; Jackson, Glen P

    2015-02-01

    The Loeb-Eiber mass filter is best operated at relatively high pressures-such as 1 Torr-where collisional dampening of ions up to the mass filter thermalizes the ions' kinetic energy, which is a requirement for effective filtering. The inter-electrode gaps of ~8 μm require rf amplitudes on the order of 0-5 V p-p at approximately 50 MHz to achieve mass filtering up to m/z 40. Mass filtering between the 25-μm diameter wires, therefore, takes place on time frames less than the collision frequency at ~1 Torr. The low power and high pressure capabilities of the Loeb-Eiber mass filter make it ideally suited for miniaturization, where power and space are a premium. In the present work, a Loeb-Eiber mass filter was constructed using commercial silicon-on-insulator (SOI) microfabrication techniques. Ions transmitting through the chip-based Loeb-Eiber mass filter were characterized in real time using a traditional linear quadrupole mass analyzer in series with the Loeb-Eiber mass filter. The new hybrid instrument has enabled us to verify several important claims regarding the operation of the Loeb-Eiber mass filter: (1) that ions can be effectively filtered at ~1 Torr, (2) that for ions of a fixed mass-to-charge ratio, the ion transmission current decreases linearly with increasing rf amplitude on the Loeb-Eiber mass filter, (3) that the cutoff voltage at which all ions of a particular m/z value are effectively blocked is linearly related to mass-to-charge, and (4) that square waveforms can filter ions more effectively than sinusoidal waveforms for a given peak-to-peak rf amplitude. PMID:25527329

  2. Kapua Gutchen: Educator, Mentor and Innovator of Torres Strait Islander Music, Dance and Language at Erub (Darnley Island), Torres Strait

    ERIC Educational Resources Information Center

    Costigan, Lyn; Neuenfeldt, Karl

    2011-01-01

    The contributions of local community members to Indigenous education can be an important component in curriculum programs. This article explores the contributions of one such dedicated and talented Torres Strait Islander community member: Meuram tribal elder Kapua Gutchen. He teaches at the Erub (Darnley Island) Campus of Tagai College in the…

  3. 27 CFR 7.5 - Delegations of the Administrator.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... Administrator's Authorities in 27 CFR Part 7, Labeling and Advertising of Malt Beverages. You may obtain a copy... Administrator. 7.5 Section 7.5 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU... Administrator. Most of the regulatory authorities of the Administrator contained in this part are delegated...

  4. 27 CFR 7.5 - Delegations of the Administrator.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... Administrator's Authorities in 27 CFR Part 7, Labeling and Advertising of Malt Beverages. You may obtain a copy... Administrator. 7.5 Section 7.5 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU... Administrator. Most of the regulatory authorities of the Administrator contained in this part are delegated...

  5. 27 CFR 7.5 - Delegations of the Administrator.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... Administrator's Authorities in 27 CFR Part 7, Labeling and Advertising of Malt Beverages. You may obtain a copy... Administrator. 7.5 Section 7.5 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU... Administrator. Most of the regulatory authorities of the Administrator contained in this part are delegated...

  6. 27 CFR 7.5 - Delegations of the Administrator.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Administrator's Authorities in 27 CFR Part 7, Labeling and Advertising of Malt Beverages. You may obtain a copy... Administrator. 7.5 Section 7.5 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU... Administrator. Most of the regulatory authorities of the Administrator contained in this part are delegated...

  7. 43 CFR 3106.7-5 - Effect of transfer.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 43 Public Lands: Interior 2 2014-10-01 2014-10-01 false Effect of transfer. 3106.7-5 Section 3106.7-5 Public Lands: Interior Regulations Relating to Public Lands (Continued) BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR MINERALS MANAGEMENT (3000) OIL AND GAS LEASING Transfers by...

  8. 43 CFR 3106.7-5 - Effect of transfer.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 43 Public Lands: Interior 2 2013-10-01 2013-10-01 false Effect of transfer. 3106.7-5 Section 3106.7-5 Public Lands: Interior Regulations Relating to Public Lands (Continued) BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR MINERALS MANAGEMENT (3000) OIL AND GAS LEASING Transfers by...

  9. 43 CFR 3106.7-5 - Effect of transfer.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 43 Public Lands: Interior 2 2011-10-01 2011-10-01 false Effect of transfer. 3106.7-5 Section 3106... MANAGEMENT, DEPARTMENT OF THE INTERIOR MINERALS MANAGEMENT (3000) OIL AND GAS LEASING Transfers by Assignment, Sublease or Otherwise § 3106.7-5 Effect of transfer. A transfer of record title to 100 percent of a...

  10. Cultural identification in aboriginal and Torres Strait Islander AIDS education.

    PubMed

    Hill, P S; Murphy, G J

    1992-06-01

    The emergence of the disease AIDS in the early 1980s has resulted in a unique response. Medical, sociocultural, political, sexual, moral and racial issues have all been raised. This paper examines the way in which participation of Aboriginal and Torres Strait Islander people has resulted in the culturally appropriate and distinctive approaches evident in health education materials produced in Aboriginal and Torres Strait Islander communities. Specific cultural issues relevant to AIDS education are considered, including the use of visual and narrative communication for AIDS education; the significance of the specific concepts related to communication on sexual issues; perceptions of AIDS as alien and genocidal; the use of the Dreaming in AIDS educational resources; and implications for AIDS education. PMID:1391156

  11. Spatially Controlled Fe Isotope Variations at Torres del Paine

    NASA Astrophysics Data System (ADS)

    Gajos, N.; Lundstrom, C.

    2013-12-01

    Recent advances in mass-spectrometry have identified systematic trends of non-traditional stable isotope variation in igneous rocks with differentiation index. We present new Fe isotope data for the Torres del Paine igneous complex in southern Chile. The multi-composition pluton consists of a 1 km vertical exposure of homogenous granite overlying a contemporaneous and possibly cogenetic 0.5 km mafic gabbro suite. Whereas previous isotopic investigations do little to address variations across important magmatic contacts, this study focuses on a first-of-its-kind spatially dependent non-traditional stable isotope investigation of an igneous pluton. Samples were collected at Torres del Paine in spatially significant transects, focusing on major contacts between country rock, granite and mafic units. Results collected by bracketed double spike MC-ICP-MS (2s precision of ×0.03) show an increase in δ56Fe towards the high silica margins of the pluton with values as high as δ56Fe 0.36. Additionally, the data show a decrease in δ56Fe toward the mafic center of the pluton with δ56Fe values ranging from δ56Fe -0.05 to 0.18. Samples collected on the contact between the granite and mafic complex show intermediate values of δ56Fe= 0.18(×) 0.03. Country rock samples in contact with granite show an isotopically light signature of δ56Fe=0.04 (×) 0.03. Analysis of 50 samples in total show a trend of increasing δ56Fe with SiO2 content. The process responsible for Fe isotope variations remains debated but is suggested to reflect four mechanisms: (1) crustal assimilation, (2) fractional crystallization, (3) late stage fluid exsolution [1] and (4) thermal migration [3]. Preliminary results show that mechanisms #1 and #2 would produce isotopic signatures opposite of those seen at Torres del Paine and other plutonic rocks. Isotopically light Torres country rock samples reveal that assimilation of rocks would not produce the isotopically heavy granites seen at Torres. Based on

  12. Striking association between urinary cadmium level and albuminuria among Torres Strait Islander people with diabetes

    SciTech Connect

    Haswell-Elkins, Melissa Satarug, Soisungwan; O'Rourke, Peter; Moore, Michael; Ng, Jack; McGrath, Victor; Walmby, Maria

    2008-03-15

    Objectives: Indigenous people of the Torres Strait (Australia) have greater potential for cadmium exposure and renal damage than other Australians due to high cadmium in some traditional seafood and a high prevalence of Type 2 diabetes, hypertension, smoking, and obesity. This study explored associations between albuminuria and an index of cadmium exposure (urinary cadmium excretion) in the presence and absence of Type 2 diabetes. Research design and methods: Two population-based, cross-sectional studies were undertaken in the Torres Strait to obtain data on body mass index (BMI), blood pressure, chronic disease, smoking, urinary cadmium, and albumin creatinine ratio (ACR). Results: Age- and BMI-adjusted urinary cadmium levels were significantly higher (p<0.01) among people with diabetes and albuminuria (n=22, geometric mean (GM) 1.91 {mu}g Cd/g creatinine) compared to those with diabetes and normal ACR (n=21, GM 0.74 {mu}g Cd/g creatinine). Urinary cadmium was also strongly associated (p<0.001) with ACR among people with diabetes in regression models and remained significant after controlling for age, sex, BMI, smoking status, and hypertension (or continuous systolic and diastolic measurements). Conclusions: While the study has methodological limitations and the nature of the association is unclear, the striking dose-dependent links between markers of cadmium exposure and of Type 2 diabetic nephropathy highlight the need for further definitive research on the health effects of cadmium in the presence of diabetes.

  13. Simultaneous Luminescence Pressure and Temperature Mapping

    NASA Technical Reports Server (NTRS)

    Buck, Gregory M. (Inventor)

    1998-01-01

    A simultaneous luminescence pressure and temperature mapping system is developed including improved dye application techniques for surface temperature and pressure measurements from 5 torr to 1000 torr with possible upgrade to from 0.5 torr to several atmospheres with improved camera resolution. Adsorbed perylene dye on slip-cast silica is pressure (oxygen) sensitive and reusable to relatively high temperatures (-150 C). Adsorbed luminescence has an approximately linear color shift with temperature, which can be used for independent temperature mapping and brightness pressure calibration with temperature.

  14. Simultaneous Luminescence Pressure and Temperature Mapping System

    NASA Technical Reports Server (NTRS)

    Buck, Gregory M. (Inventor)

    1995-01-01

    A simultaneous luminescence pressure and temperature mapping system is developed including improved dye application techniques for surface temperature and pressure measurements from 5 torr to 1000 torr with possible upgrade to from 0.5 torr to several atmospheres with improved camera resolution. Adsorbed perylene dye on slip-cast silica is pressure (oxygen) sensitive and reusable to relatively high temperatures (approximately 150 C). Adsorbed luminescence has an approximately linear color shift with temperature, which can be used for independent temperature mapping and brightness pressure calibration with temperature.

  15. Bedload parting in western Torres Strait, northern Australia

    NASA Astrophysics Data System (ADS)

    Daniell, James J.

    2015-02-01

    This paper presents a new style of bedload parting from western Torres Strait, northern Australia. Outputs from a hydrodynamic model identified an axis of bedload parting centred on the western Torres Strait islands (~142°15‧E). This bedload parting is similar to others documented from mixed tidal regimes as it is driven dominantly by the O1, K1 and M2 tidal constituents. However, parting is aided by overtides on the eastern, mixed semidiurnal side of the strait. Bedload parting is also strongly impacted by wind-driven currents. Wind-driven currents during the trade wind season lead to the average estimates of bedload transport to be directed west, through the strait, over the 8 year model duration. As a result, east and west directed bedload parting is only active during the monsoon season when the influence of wind-driven circulation is negligible. A simulation of bedload transport using a range of sediment grain sizes indicated that sediments with a grainsize greater than ~2 mm were transported in a direction consistent with tidally driven bedload parting, as opposed to residual wind-driven flow.

  16. 24 CFR 7.5 - EEO Alternative Dispute Resolution Program.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... Provisions § 7.5 EEO Alternative Dispute Resolution Program. In accordance with the Secretary's Policy Statement regarding Alternative Dispute Resolution (ADR) located on the Department's website and 29 CFR 1614... 24 Housing and Urban Development 1 2011-04-01 2011-04-01 false EEO Alternative Dispute...

  17. [Rehbein's procedure versus De la Torre in Hirschsprung's disease].

    PubMed

    Gil-Vernet H, J M; Royo, G F; Brun, N; Broto, J; Gine, C; Moreno, A

    2009-01-01

    The authors perform a retrospective study with a 4 years follow up of 46 patients operated of Hirschsprung's disease (HD). In 36 cases by with staplers Rehbein technique (TR) and in 10 others with De la Torre endorectal pull-through (TEPT). In all them diagnosis was achieved by mean of radiology, manometry, and hystochemical procedures. During the surgical procedure was performed in all cases biopsies to confirm the neuronal integrity of the colon descended. In the TR group, 16.6% of patients presented rectal achalasia with constipation due to 3 cms. aganglionic rectum remnant, while in the TEPT group this circumstance are not presented because all aganglionic rectum was eliminated. Otherwise TEPT technique permits an earlier application, diminuend the hospitalization time,shortening the start of feeding and with a good cosmetic result. None of this patients presented infection, stenosis, bleeding or incontinence. PMID:19323082

  18. Torres strait islanders and Australian nationhood: Some educational perspectives

    NASA Astrophysics Data System (ADS)

    Williamson, Alan

    1992-01-01

    This article analyses the role of education in incorporating Australia's Melanesian minority, the Torres Strait Islanders, into the Australian nation. The analysis begins with the introduction of Queensland government schooling into Torres Strait in 1892, which fostered expectations of Queensland citizenship and employment opportunities available to other races in the economy of the Strait. From 1904 to the outbreak of world war II in the Pacific in 1942 these early directions were altered by educational policies which initially sought to train Islanders for a life in the Islands as a "race apart" from the rest of Australia. Subsequent syllabus reforms, paralleling but not equalling regular schooling offered in Queensland, did not meet Islanders' aspirations for "proper schooling" and the jobs they expected would flow from it. Following world war II, regulations confining Islanders to the Strait were relaxed and many migrated to the Queensland mainland in search of better jobs, better pay, and better education for their children. Those who remained in the Islands received an education which, by 1985, had been brought up to the mainland standard. Yet, neither group's educational aspirations were satisfied despite initiatives and financial incentives of the Commonwealth government aimed at keeping Islander children at school. The article concludes that the way ahead for Islanders in staking out their educational future in the Australian nation on a basis of equality with other Australians lies in educational developments in the Islands themselves, where Islanders are playing an active role in developing, managing, and guiding schooling in directions which recognise their identity and their citizenship aspirations.

  19. Tribological properties of biocompatible Ti-10W and Ti-7.5TiC-7.5W.

    PubMed

    Choi, Myounggeun; Hong, Eunji; So, Jungwon; Song, Seokbeom; Kim, Byoung-Suck; Yamamoto, Akiko; Kim, Yong-Suk; Cho, Jinhan; Choe, Heeman

    2014-02-01

    This study investigates and compares the microstructure, biocompatibility, and tribological properties of two different Ti-based composites, Ti-10W and Ti-7.5TiC-7.5W, with those of pure Ti for their potential use in biomedical applications. In particular, cold and hot isostatic-pressing and arc-melting methods were utilized and compared for the microstructure of the composites. Nano-scratch measurements and pin-on-disk wear tests were employed to understand their tribological behavior. As compared to pure Ti, Ti-10W and Ti-7.5TiC-7.5W showed significantly improved nano-scratch resistance (by 85 and 77%, respectively) and wear resistance (by 64 and 66%, respectively), in good agreement with hardness measurements. For biocompatibility examination, both microculture tetrazolium test (MTT) and water soluble tetrazolium (WST-1) test were used to quantify the cell viability of human osteoblasts and mouse fibroblasts on the materials. Both of the Ti-based composites showed acceptable biocompatibility in comparison with the pure Ti control. PMID:24333672

  20. Performance Evaluation of a Loeb-Eiber Mass Filter at 1 Torr

    NASA Astrophysics Data System (ADS)

    Hoffmann, William D.; Jin, Feng; Pedder, Randall E.; Taormina, Christopher; Jackson, Glen P.

    2015-02-01

    The Loeb-Eiber mass filter is best operated at relatively high pressures—such as 1 Torr—where collisional dampening of ions up to the mass filter thermalizes the ions' kinetic energy, which is a requirement for effective filtering. The inter-electrode gaps of ~8 μm require rf amplitudes on the order of 0-5 V p-p at approximately 50 MHz to achieve mass filtering up to m/z 40. Mass filtering between the 25-μm diameter wires, therefore, takes place on time frames less than the collision frequency at ~1 Torr. The low power and high pressure capabilities of the Loeb-Eiber mass filter make it ideally suited for miniaturization, where power and space are a premium. In the present work, a Loeb-Eiber mass filter was constructed using commercial silicon-on-insulator (SOI) microfabrication techniques. Ions transmitting through the chip-based Loeb-Eiber mass filter were characterized in real time using a traditional linear quadrupole mass analyzer in series with the Loeb-Eiber mass filter. The new hybrid instrument has enabled us to verify several important claims regarding the operation of the Loeb-Eiber mass filter: (1) that ions can be effectively filtered at ~1 Torr, (2) that for ions of a fixed mass-to-charge ratio, the ion transmission current decreases linearly with increasing rf amplitude on the Loeb-Eiber mass filter, (3) that the cutoff voltage at which all ions of a particular m/z value are effectively blocked is linearly related to mass-to-charge, and (4) that square waveforms can filter ions more effectively than sinusoidal waveforms for a given peak-to-peak rf amplitude.

  1. Effective Teaching Practices for Aboriginal and Torres Strait Islander Students: A Review of the Literature

    ERIC Educational Resources Information Center

    Lloyd, Natalie J.; Lewthwaite, Brian Ellis; Osborne, Barry; Boon, Helen J.

    2015-01-01

    This paper presents a review of the literature pertaining to the teacher actions that influence Aboriginal and/or Torres Strait Islander student learning outcomes. This review investigates two foci: the identification of teacher actions influencing learning outcomes for Aboriginal and/or Torres Strait Islander students and the methodological…

  2. 25 CFR 162.502 - Cabazon, Augustine, and Torres-Martinez Reservations, California.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 25 Indians 1 2011-04-01 2011-04-01 false Cabazon, Augustine, and Torres-Martinez Reservations... Torres-Martinez Reservations, California. (a) Upon a determination by the Secretary that the owner or...-Martinez Indian Reservations which are or may be irrigated from distribution facilities administered by...

  3. 25 CFR 162.502 - Cabazon, Augustine, and Torres-Martinez Reservations, California.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 25 Indians 1 2012-04-01 2011-04-01 true Cabazon, Augustine, and Torres-Martinez Reservations... Torres-Martinez Reservations, California. (a) Upon a determination by the Secretary that the owner or...-Martinez Indian Reservations which are or may be irrigated from distribution facilities administered by...

  4. 25 CFR 162.502 - Cabazon, Augustine, and Torres-Martinez Reservations, California.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 25 Indians 1 2010-04-01 2010-04-01 false Cabazon, Augustine, and Torres-Martinez Reservations... Torres-Martinez Reservations, California. (a) Upon a determination by the Secretary that the owner or...-Martinez Indian Reservations which are or may be irrigated from distribution facilities administered by...

  5. 25 CFR 162.502 - Cabazon, Augustine, and Torres-Martinez Reservations, California.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 25 Indians 1 2013-04-01 2013-04-01 false Cabazon, Augustine, and Torres-Martinez Reservations... Torres-Martinez Reservations, California. (a) Upon a determination by the Secretary that the owner or...-Martinez Indian Reservations which are or may be irrigated from distribution facilities administered by...

  6. 25 CFR 162.602 - Cabazon, Augustine, and Torres-Martinez Reservations, California.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 25 Indians 1 2014-04-01 2014-04-01 false Cabazon, Augustine, and Torres-Martinez Reservations... Torres-Martinez Reservations, California. (a) Upon a determination by the Secretary that the owner or...-Martinez Indian Reservations which are or may be irrigated from distribution facilities administered by...

  7. Improving the Participation and Engagement of Aboriginal and Torres Strait Islander Students in Business Education

    ERIC Educational Resources Information Center

    Dang, Thi Kim Anh; Vitartas, Peter; Ambrose, Kurt; Millar, Hayley

    2016-01-01

    Most Australian universities have among their goals to increase the number of Aboriginal and Torres Strait Islander students at their institutions. In the Australian higher education context, Aboriginal and Torres Strait Islander students are seriously under-represented, particularly in business education compared to other disciplines. An…

  8. A National Strategy for the Education of Aboriginal and Torres Strait Islander Peoples, 1996-2002.

    ERIC Educational Resources Information Center

    Ministerial Council on Education, Employment, Training and Youth Affairs, Carlton South (Australia).

    In preparing this report, the recommendations of the (Australian) National Review of Education for Aboriginal and Torres Strait Islander Peoples were cross-referenced to the 21 goals of the National Aboriginal and Torres Strait Islander Education Policy (NATSIEP) and aggregated into 8 priorities. These are: 1) to arrange for the participation of…

  9. Instantaneous stroke volume by PDE during and after constant LBNP (-50 torr)

    NASA Technical Reports Server (NTRS)

    1980-01-01

    Six male subjects were exposed to -50 torr lower body negative pressure (LBNP) for 10 min while stroke volume was recorded beat by beat at regular intervals before, during and after release of LBNP. Stroke volume was calculated from the systolic velocity integral in the ascending aorta by pulsed Doppler echocardiography (PDE) and the cross sectional area of the vessel by M mode echocardiography. Changes in leg volume were recorded continuously and blood pressure was taken every minute. Stroke volume dropped by 51% of the control in the first 33 sec of LBNP and continued to decline slowly to -62% toward the end. Heart rate increased by 15% in the first 10 sec and was 22% above control at the end of exposure. The resulting cardiac output closely followed the course of stroke volume (-47% at 33 sec, -53% at 8 min) showing that the modest increase in heart rate did little to offset the drop in stroke volume. Leg volume increased markedly within the first 10 sec with a more gradual rise reaching +3.5% at the end. Upon sudden release of LBNP, leg volume dropped significantly during the first 3 sec simultaneously with an increase in stroke volume followed by a substantial decline in heart rate below the baseline.

  10. Praxis release notes, Versions 7. 4 and 7. 5

    SciTech Connect

    Holloway, F.W.

    1985-09-02

    These release notes are intended as a guide to those responsible for Nova software. They assume extensive knowledge of the present Praxis language. Each improvement made in Praxis versions 7.4 and 7.5 is described. The descriptions are organized as shown in the table of contents. Many of the improvements have example programs which are contained within the chapter on example programs. For completeness, the final chapter lists the specific areas within the compiler which were modified. These will only be useful to those working on the compiler itself.

  11. N2 pressure - broadened O3 line widths and strengths near 1129.4 cm-1

    NASA Technical Reports Server (NTRS)

    Copeland, G. E.; Majorana, L. N.; Harward, C. N.; Steinkamp, R. J.

    1982-01-01

    A Beer's Law experiment was performed with a tunable diode laser to find the N2 pressure broadening characteristics of a single 03 absorption line at 1129.426 cm for N2 pressures from 10 to 100 torr (O3 pressure = 3.16 torr). SO2 line positions were used for wavelength calibration. Line shapes were interatively fitted to a Lorentz function. Results were delta (HWHM in MHz) = 47.44 (+ or - 5.34) MHz + 1.730 (+ or - 0.088) MHz/torr *p(torr) with sigma = 0.9897. This intercept compares well with the Doppler O3 - O3 broadened (at 3.16 torr) width of 44.52 Hz. This result in a HWHM line width of 0.44 cm atm at 760 torr and 285 K. The line strengths integrated over delta nu = 0.55 cm were found to be N2 pressure dependent.

  12. Measurement of Xenon Viscosity as a Function of Low Temperature and Pressure

    NASA Technical Reports Server (NTRS)

    Grisnik, Stanley P.

    1998-01-01

    The measurement of xenon gas viscosity at low temperatures (175-298 K) and low pressures (350 torr-760 torr) has been performed in support of Hall Thruster testing at NASA Lewis Research Center. The measurements were taken using the capillary flow technique. Viscosity measurements were repeatable to within 3%. The results in this paper are in agreement with data from Hanley and Childs and suggest that the data from Clarke and Smith is approximately 2% low. There are no noticeable pressure effects on xenon absolute viscosity for the pressure range from 350 torr to 760 torr.

  13. High mountain soils and periglacial features at the Torres del Paine, National Park Torres del Paine, Chile.

    NASA Astrophysics Data System (ADS)

    Senra, Eduardo; Schaefer, Carlos; Simas, Felipe; Gjorup, Davi

    2015-04-01

    The Torres del Paine National Park (TPNP) is located on the southern limit of the Andean Southern Ice Field, part of the Magallanes and Antartica Chilena region, in the province of Ultima Esperanza. The TPNP has a very heterogeneous climate due to orographic influence and wet air masses from the Pacific. The geology is basically Cretaceous metasedimentary rocks and Miocene granitic plutons and batholiths. We studied the main soils and geoenvironments of Mt Ferrier mountain and its surroundings, based on soils , landforms and vegetation aspects. The geoenvironmental stratification was based on the combined variation and integration of pedo-litho-geomorphological features with the vegetation. WE used detailed geological maps, a DEM and slope maps and WorlView II satellite images. Fifteen soils profiles were sampled and classified according to Soil Taxonomy (2010) at all genovironments, ranging from 50 m a.s.l to the at high plateau just below the permanent snowline, under periglacial conditions (~1004m asl). Three soil temperature and moisture monitoring sites were set, allowing for 24 consecutive months (2011 to 2013). Seven geoenvironments were identified with distinct soil and landform characteristics, all with a similar geological substrate. The landform and vegetation have a strong connection with the landscape dynamic, controlling erosional and depositional processes, resulting from glacier advances and retreats in the Late Quaternary. Wind blown materials is widespread, in the form of loess material, accumulating in the higher parts of the landscape. On the other hand, accumulation of organic matter in the water-saturated depressions is common in all altitudes. Generally the soils are acidic and dystrophic, with little exceptions. The following geoenvironments were identified: Periglacial Tundra, Loess slopes, Talus and scarpmentd, Fluvio-glacial terraces, Fluvio-lacustrine plains, Moraines and Paleodunes. The regional pedology show the occurrence of five soil

  14. A review of the use of Al-alloy vacuum components for operation at 10 sup minus 13 Torr

    SciTech Connect

    Ishimaru, H. )

    1990-02-05

    An extremely high vacuum (XHV) chamber was fabricated and tested. The vacuum chamber was made of special surface finished (EX-process) aluminum alloy in oxygen and argon atmosphere. The chamber was assembled using TIG welding in an argon atmosphere and by electron beam welding. The system was evacuated with a turbo-backed 300 l/s turbomolecular pump separated from the main chamber using a right angle valve. The liquid nitrogen shroud is installed inside the main vacuum chamber. The XHV is maintained by two 300 l/s sputter ion pumps and a titanium sublimation pump with a liquid nitrogen shroud. These pumps are also made of aluminum alloys. An ultimate pressure of 3{times}10{sup {minus}13} Torr was measured with a point collector gauge with a spherical anode mounted on an Al-flange. Residual gas analysis in the order 10{sup {minus}13} Torr was performed by a newly developed Q-mass filter. To suppress outgassing from the quadrupole electrode, the ion source is mounted on an Al-flange separated from the quadrupole electrode.

  15. Ventilation and respiratory gas exchanges of the lugworm Arenicola marina (L.) as functions of ambient PO2 (20-700 torr).

    PubMed

    Toulmond, A; Tchernigovtzeff, C

    1984-09-01

    Ventilatory regulation of intact, unrestrained lugworms Arenicola marina living in glass-tube artificial burrows was examined for values of inspired seawater PO2, PIO2, from 20 to 700 torr, at constant ambient pH and PCO2 values. The water ventilation rate and the respiratory characteristics of the ventilated seawater were measured. The water convection requirement and the corresponding specific rates of O2 uptake and CO2 production were calculated. The mean ventilatory water flow was a complex function of PIO2: decrease in hyperoxia, increase in hypoxia, decrease in extreme hypoxia. Compared to the normoxic responses, hyperoxia led to a hypercapnia (and acidosis) and moderate hypoxia to a hypocapnia (and alkalosis) in the expired water, variations which presumably reflect blood acid-base balance changes. Thus, as in other water breathers, the regulation of the organism's oxygenation may override the regulation of its acid-base balance. The lugworm's oxygen exchanger is highly efficient. However, below a critical partial pressure, PIO2 ca 120 torr, values of O2 consumption and ventilation decreased. A second critical O2 partial pressure appeared at PIO2 values between 80 and 40 torr; a 'switch-on' of anaerobic metabolism. These phenomena may be viewed as features of an adaptative respiratory strategy selected for in relation with the lugworm's particular peristaltic ventilatory mechanism and its intertidal mode of life. PMID:6441215

  16. Atmospheric pressure synthesis of photoluminescent hybrid materials by sequential organometallic vapor infiltration into polyethylene terephthalate fibers

    SciTech Connect

    Akyildiz, Halil I.; Mousa, Moataz Bellah M.; Jur, Jesse S.

    2015-01-28

    Exposing a polymer to sequential organometallic vapor infiltration (SVI) under low pressure conditions can significantly modify the polymer's chemical, mechanical, and optical properties. We demonstrate that SVI of trimethylaluminum into polyethylene terephthalate (PET) can also proceed readily at atmospheric pressure, and at 60 °C the extent of reaction determined by mass uptake is independent of pressure between 2.5 Torr and 760 Torr. At 120 °C, however, the mass gain is 50% larger at 2.5 Torr relative to that at 760 Torr, indicating that the precursor diffusion in the chamber and fiber matrix decreases at higher source pressure. Mass gain decreases, in general, as the SVI process temperature increases both at 2.5 Torr and 760 Torr attributed to the faster reaction kinetics forming a barrier layer, which prevents further diffusion of the reactive species. The resulting PET/Al-O{sub x} product shows high photoluminescence compared to untreated fibers. A physical mask on the polymer during infiltration at 760 Torr is replicated in the underlying polymer, producing an image in the polymer that is visible under UV illumination. Because of the reduced precursor diffusivity during exposure at 760 Torr, the image shows improved resolution compared to SVI performed under typical 2.5 Torr conditions.

  17. A vacuum (10 exp -9 torr) friction apparatus for determining friction and endurance life of MoS(x) films

    NASA Technical Reports Server (NTRS)

    Miyoshi, Kazuhisa; Honecy, Frank S.; Abel, Phillip B.; Pepper, Stephen V.; Spalvins, Talivaldis; Wheeler, Donald R.

    1993-01-01

    An ultrahigh-vacuum tribometer for use in a ball-on-disk configuration was specially designed for measuring the friction and endurance life of magnetron-sputtered solid lubricating MoS(x) films deposited on sputter-cleaned 400 C stainless-steel disks, when slid against a 6-mm-diameter 440 C stainless-steel ball. The results of tests showed that the tribometer performs satisfactorily in unidirectional rotation in vacuum at a pressure of 10 exp -7 Pa, 10 exp -9 torr. Similarities are observed in the life cycle friction behavior and the coefficient of friction as a function of the number of disk revolutions, for MoS(x) films at average Hertzian contact from 0.33 to 0.69 GPa.

  18. Effective communication tools to engage Torres Strait Islanders in scientific research

    NASA Astrophysics Data System (ADS)

    Jones, A.; Barnett, B.; Williams, A. J.; Grayson, J.; Busilacchi, S.; Duckworth, A.; Evans-Illidge, E.; Begg, G. A.; Murchie, C. D.

    2008-09-01

    Often, research activities in Torres Strait have not delivered full benefit to Torres Strait Islanders due to a lack of consultation, ineffectual communication of research information and lack of empathy for the needs of Islander communities. As for other stakeholder groups, integration of Islanders into the research process through practical involvement in research may overcome these problems. Three case studies from research projects conducted in Torres Strait are discussed to highlight a variety of communication and engagement activities carried out by non-Indigenous researchers. How these communication and extension activities facilitate collaboration between Torres Strait Islander and non-Indigenous researchers provides insight in the importance of these activities to the relative success of research projects. The benefits for Islanders in collaborating with researchers may be: improved understanding of the research and how it contributes to natural resource management; a sense of control in future management decisions; a greater likelihood of successful self-regulatory management systems; enhanced skills; and increased employment opportunities. The potential benefits for researchers are enhanced support for research projects resulting in increased access to data and logistic support that may ultimately impact the successful completion of projects. Such an approach will require researchers to take time to develop relationships with Torres Strait Islanders, effectively involve Islanders in research on an equitable basis and be flexible. This will ultimately require funding organisations to recognise the importance of such activities in research proposals and provide support through sufficient funding to enable these activities to be carried out.

  19. 39 CFR 7.5 - Public notice of meetings, subsequent changes.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 39 Postal Service 1 2011-07-01 2011-07-01 false Public notice of meetings, subsequent changes. 7.5 Section 7.5 Postal Service UNITED STATES POSTAL SERVICE THE BOARD OF GOVERNORS OF THE U.S. POSTAL SERVICE PUBLIC OBSERVATION (ARTICLE VII) § 7.5 Public notice of meetings, subsequent changes. (a) At least...

  20. Integrated global background monitoring network. Preliminary results from Torres del Paine and Olympic National Parks

    SciTech Connect

    Wiersma, G.B.; Kohler, A.; Boelcke, C.; Baker, G.; Harmon, M.; Weber, C.; Gonzales, J.

    1985-10-01

    During 1984, a pilot project was initiated for monitoring pollution at Torres del Paine National Park in southern Chile and Olympic National Park in the United States. These are two of three initial sites that are to be established as part of an integrated global backgound monitoring network. Eventually, the plan is to establish a world-wide system of such sites. We collected and analyzed samples of the soil, water, air, and two species of plants (moss and lichen). We also collected and analyzed samples of the forest litter. We compared the samples of soil and vegetation against reference samples. We also compared samples of soil, vegetation, and of organic material from Torres del Paine against similar samples from Olympic and Sequoia-Kings Canyon National Parks in the United States. Although the data is preliminary, it is in agreement with out initial hypothesis that Torres del Paine and Olympic National Parks are not a polluted sites.

  1. Muir-Torre Syndrome and founder mismatch repair gene mutations: A long gone historical genetic challenge.

    PubMed

    Ponti, G; Manfredini, M; Tomasi, A; Pellacani, G

    2016-09-10

    A "cancer predisposing syndrome" later labeled as Hereditary Non-Polyposis Colorectal Cancer (HNPCC) or Lynch Syndrome, was firstly described by Warthin, about one century ago. An increased predisposition to the development of multiple familial tumors is described as characteristic of this syndrome where visceral and cutaneous malignancies may appear at an early age namely endometrial, gastric, small bowel, ureteral and renal pelvis, ovarian, hepatobiliary tract, pancreatic, brain (Turcot Syndrome) and sebaceous glands (Muir-Torre Syndrome). The latter, a variant of Lynch Syndrome, is characterized by the presence of sebaceous skin adenomas, carcinomas and/or keratoacanthomas associated with visceral malignancies. Both Lynch Syndrome and Muir-Torre Syndrome have been recognized due to germline mutations in mismatch repair genes MLH1, MSH2 and MSH6. To date, 56 Lynch Syndrome founder mutations dependent on MLH1, MSH2 and, although less frequently found, MSH6 and PMS2 are described. Some of these founder mutations, principally of MSH2 gene, have been described to cause Muir-Torre phenotype and have been traced in large and outbreed Muir-Torre Syndrome families living in different US and European territories. Due to the evidences of highly specific Muir-Torre phenotypes related to the presence of widespread MSH2 founder mutations, preliminary search for these MSH2 common mutations in individuals carrying sebaceous tumors and/or keratoacanthomas, at early age or in association to visceral and familial tumors, permits cost-effective and time-saving diagnostic strategies for Lynch/Muir-Torre Syndromes. PMID:26143115

  2. Acceptability of Mental Health Apps for Aboriginal and Torres Strait Islander Australians: A Qualitative Study

    PubMed Central

    Mills, Patj Patj Janama Robert; Dingwall, Kylie Maree; Lowell, Anne; Singer, Judy; Rotumah, Darlene; Bennett-Levy, James; Nagel, Tricia

    2016-01-01

    Background Aboriginal and Torres Strait Islander Australians experience high rates of mental illness and psychological distress compared to their non-Indigenous counterparts. E-mental health tools offer an opportunity for accessible, effective, and acceptable treatment. The AIMhi Stay Strong app and the ibobbly suicide prevention app are treatment tools designed to combat the disproportionately high levels of mental illness and stress experienced within the Aboriginal and Torres Strait Islander community. Objective This study aimed to explore Aboriginal and Torres Strait Islander community members’ experiences of using two culturally responsive e-mental health apps and identify factors that influence the acceptability of these approaches. Methods Using qualitative methods aligned with a phenomenological approach, we explored the acceptability of two culturally responsive e-mental health apps through a series of three 3-hour focus groups with nine Aboriginal and Torres Strait Islander community members. Thematic analysis was conducted and coresearcher and member checking were used to verify findings. Results Findings suggest strong support for the concept of e-mental health apps and optimism for their potential. Factors that influenced acceptability related to three key themes: personal factors (eg, motivation, severity and awareness of illness, technological competence, and literacy and language differences), environmental factors (eg, community awareness, stigma, and availability of support), and app characteristics (eg, ease of use, content, graphics, access, and security and information sharing). Specific adaptations, such as local production, culturally relevant content and graphics, a purposeful journey, clear navigation, meaningful language, options to assist people with language differences, offline use, and password protection may aid uptake. Conclusions When designed to meet the needs of Aboriginal and Torres Strait Islander Australians, e-mental health

  3. Bureaucratic Impediments to Aboriginal & Torres Strait Islander Empowerment, Self-Determination & Self-Management.

    ERIC Educational Resources Information Center

    Stewart, Ian; And Others

    This paper examines the context of current social policy and analyzes the bureaucratic impediments to achieving greater coordination of programs and services for Australia's Aborigines and Torres Strait Islanders. Specifically, the paper demonstrates how a "national commitment" involving bureaucratic rationality and imperatives continues to…

  4. Mathematics Funds of Knowledge: "Sotmaute" and "Sermaute" Fish in a Torres Strait Islander Community

    ERIC Educational Resources Information Center

    Ewing, Bronwyn

    2012-01-01

    The purpose of this article is to describe a project with one Torres Strait Islander Community. It provides some insights into parents' funds of knowledge that are mathematical in nature, such as sorting shells and giving fish. The idea of funds of knowledge is based on the premise that people are competent and have knowledge that has been…

  5. Developing Future Health Professionals' Capacities for Working with Aboriginal and Torres Strait Islander Peoples

    ERIC Educational Resources Information Center

    Hendrick, Antonia; Britton, Katherine Frances; Hoffman, Julie; Kickett, Marion

    2014-01-01

    This article details reflections of an interdisciplinary team of educators working with groups of health sciences students in preparing them for working with Aboriginal and Torres Strait Islander peoples. The first-year common core unit discussed here is one attempt to equip future health practitioners with skills and knowledges to work adequately…

  6. A Profile of the Aboriginal and Torres Strait Islander Higher Education Student Population

    ERIC Educational Resources Information Center

    Wilks, Judith; Wilson, Katie

    2015-01-01

    This paper brings together recent statistics relating to the participation of Aboriginal and Torres Strait Islander students in higher education. A number of key statistical realities relating to their enrolment into, retention during, and completion of, their university courses are depicted. Foremost among these realities is that despite…

  7. Supporting Australian Torres Strait Islander and Aboriginal Nursing Students Using Mentoring Circles: An Action Research Study

    ERIC Educational Resources Information Center

    Mills, Jane; Felton-Busch, Catrina; Park, Tanya; Maza, Karen; Mills, Frances; Ghee, McCauley; Hitchins, Marnie; Chamberlain-Salaun, Jennifer; Neuendorf, Nalisa

    2014-01-01

    Attempts to recruit Aboriginal and Torres Strait Islander students into nursing degrees have made minimal impact on the number of registered nurses working in Australia's healthcare sector. Yet increasing the number of Indigenous nurses remains one of the most important objectives in strategies to close the health gap between Indigenous and…

  8. Weyl Calculus in Phase Space and the Torres-Vega and Frederick Equation

    SciTech Connect

    Gosson, Maurice de

    2006-01-04

    We show that the Schroedinger equation in phase space proposed by Torres-Vega and Frederick is canonical in the sense that it is a natural consequence of Weyl calculus provided that one lets Heisenberg-Weyl operators act on functions (or half-densities) defined on phase space. We interpret our results in terms of deformation quantization.

  9. Indigenous Language Learning and Maintenance among Young Australian Aboriginal and Torres Strait Islander Children

    ERIC Educational Resources Information Center

    Verdon, Sarah; McLeod, Sharynne

    2015-01-01

    Internationally, cultural renewal and language revitalisation are occurring among Indigenous people whose lands were colonised by foreign nations. In Australia, the Aboriginal and Torres Strait Islander people are striving for the re-voicing of their mother tongue and the re-practicing of their mother culture to achieve cultural renewal in the…

  10. 76 FR 66968 - Abelardo E. Lecompte-Torres, M.D. Decision and Order

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-28

    ... registration. Steven B. Brown, 75 FR 65660, 65663 (2010) (citing John B. Freitas, 74 FR 17524, 17525 (2009)); Dominick A. Ricci, 58 FR 51104, 51105 (1993); Bobby Watts, 53 FR 11919, 11920 (1988). It is undisputed that... Enforcement Administration Abelardo E. Lecompte-Torres, M.D. Decision and Order On April 29, 2010, the...

  11. Structural compartmentalisation of a geothermal system, the Torre Alfina field (central Italy)

    NASA Astrophysics Data System (ADS)

    Vignaroli, Gianluca; Pinton, Annamaria; De Benedetti, Arnaldo A.; Giordano, Guido; Rossetti, Federico; Soligo, Michele; Berardi, Gabriele

    2013-11-01

    Recent surging of renewed industrial interest in the exploration of low and medium enthalpy geothermal fields makes the accurate assessment of the geothermal potential essential to minimise uncertainties during both exploration and exploitation. The Torre Alfina field is a case of abandoned, but promising, geothermal field of central Italy where the roles of the internal structural setting and of the recharge areas on the hydrothermal circulation are largely unconstrained. In this paper, field structural data integrated with geomorphic lineament analysis document the occurrence of post-orogenic deformation structures controlling the compartmentalisation of the Torre Alfina geothermal field. Strike-slip and subordinate normal fault systems (with associated network fractures) cut and dislocate the internal architecture of the reservoir and prevent its hydraulic connection with Mount Cetona, considered to be the recharge area and where hydrothermal manifestation, including travertine deposition, occurs. 230Th/234U radiometric dating of superposed travertine units gives 200, 120 and 90 ka respectively, inferred to correspond to the age of the fossil hydrothermal circulation during tectonic activity. The results have been used for illustrating a new geological conceptual model for the Torre Alfina area where the geothermal system is composed of different compartments. Tectonic structures define the main boundaries between compartments, helping the understanding of why productive and non-productive wells were found in apparently similar structural settings within the Torre Alfina field.

  12. Guide to Success for Organisations in Achieving Employment Outcomes for Aboriginal and Torres Strait Islander People

    ERIC Educational Resources Information Center

    Giddy, Kristine; Lopez, Jessica; Redman, Anne

    2009-01-01

    Helping Aboriginal and Torres Strait Islander job-seekers find and keep a job has been the focus of recent reforms announced by the Australian Government. This guide describes seven essential characteristics of employment service organisations that lead to successful employment outcomes for their Indigenous clients. Based on a selection of…

  13. New species of Nuuanu (Amphipoda: Nuuanuidae) from Norfolk Island, Torres Strait and the Cocos (Keeling) Islands.

    PubMed

    Hughes, L E; Bopiah, A

    2013-01-01

    Three new species of Nuuanu, N. quintalana sp. nov., N. stuckeyorun sp. nov. and N. titaseyi sp. nov. are described from Norfolk Island, Tasman Sea; Cocos (Keeling) Islands, Indian Ocean and the Torres Strait, Australia, respectively. There are currently 17 described species of Nuuanu with the genus distributed world-wide. PMID:26287075

  14. Introduced marine species: Management arrangements of consideration for the Torres Strait

    NASA Astrophysics Data System (ADS)

    Neil, Kerry M.; Hilliard, Robert; Russell, Barry; Clark, Paul

    2008-09-01

    Introduced marine species (IMS) can have significant impacts on economic, ecological, social and cultural aspects of coastal marine environments. There is, therefore, a need to minimise these impacts through the implementation of comprehensive and consistent management strategies and monitoring processes that work towards preventing introductions, detecting introductions if they were to occur and managing incursions should they be detected. There is also the need to ensure that approaches taken are comparable to provide consistency of IMS management effort, particularly across areas that are multi-jurisdictional (e.g. spanning State or Territory borders). A number of studies have examined IMS, their vectors and management arrangements for the Torres Strait region, a multi-jurisdictional area between Queensland, Australia and Papua New Guinea. This paper presents information from a baseline survey conducted in the Torres Strait for marine pests in conjunction with a synthesis of information from other studies on IMS risks, their vectors and management strategies of relevance to the Torres Strait region. A number of strengths, but also gaps, between the various jurisdictions have been identified and discussed. Processes such as the establishment of Biosecurity Queensland as a specialist group and the development of the National System for the Prevention and Management of Marine Pest Incursions are occurring. However, the Torres Strait region is at current risk of marine pest inoculation, particularly for species such as Perna viridis, and management strategies to minimise this risk are lacking. The information presented here will assist management groups in their ability to work towards mitigating the risk of an IMS being translocated to and negatively impacting the unique and diverse ecology of the marine systems, and the industries, people and customs that rely on the coastal marine environment for food, recreation and commerce in the Torres Strait.

  15. Differential Activation of Vascular Smooth Muscle Kv7.4, Kv7.5, and Kv7.4/7.5 Channels by ML213 and ICA-069673

    PubMed Central

    Brueggemann, Lyubov I.; Haick, Jennifer M.; Cribbs, Leanne L.

    2014-01-01

    Recent research suggests that smooth muscle cells express Kv7.4 and Kv7.5 voltage-activated potassium channels, which contribute to maintenance of their resting membrane voltage. New pharmacologic activators of Kv7 channels, ML213 (N-mesitybicyclo[2.2.1]heptane-2-carboxamide) and ICA-069673 N-(6-chloropyridin-3-yl)-3,4-difluorobenzamide), have been reported to discriminate among channels formed from different Kv7 subtypes. We compared the effects of ML213 and ICA-069673 on homomeric human Kv7.4, Kv7.5, and heteromeric Kv7.4/7.5 channels exogenously expressed in A7r5 vascular smooth muscle cells. We found that, despite its previous description as a selective activator of Kv7.2 and Kv7.4, ML213 significantly increased the maximum conductance of homomeric Kv7.4 and Kv7.5, as well as heteromeric Kv7.4/7.5 channels, and induced a negative shift of their activation curves. Current deactivation rates decreased in the presence of the ML213 (10 μM) for all three channel combinations. Mutants of Kv7.4 (W242L) and Kv7.5 (W235L), previously found to be insensitive to another Kv7 channel activator, retigabine, were also insensitive to ML213 (10 μM). In contrast to ML213, ICA-069673 robustly activated Kv7.4 channels but was significantly less effective on homomeric Kv7.5 channels. Heteromeric Kv7.4/7.5 channels displayed intermediate responses to ICA-069673. In each case, ICA-069673 induced a negative shift of the activation curves without significantly increasing maximal conductance. Current deactivation rates decreased in the presence of ICA-069673 in a subunit-specific manner. Kv7.4 W242L responded to ICA-069673-like wild-type Kv7.4, but a Kv7.4 F143A mutant was much less sensitive to ICA-069673. Based on these results, ML213 and ICA-069673 likely bind to different sites and are differentially selective among Kv7.4, Kv7.5, and Kv7.4/7.5 channel subtypes. PMID:24944189

  16. Consultation with Aboriginal and Torres Strait Islander People in Early Childhood Education: The Impact of Colonial Discourses

    ERIC Educational Resources Information Center

    Miller, Melinda G.

    2015-01-01

    In Australian early years education, consultation and partnerships with Aboriginal and Torres Strait Islander people are central to embedding Indigenous perspectives. Building sustained and reciprocal partnerships with Aboriginal and Torres Strait Islander people supports access to local knowledges and perspectives to inform curriculum planning,…

  17. Barometric pressures at extreme altitudes on Mt. Everest: physiological significance.

    PubMed

    West, J B; Lahiri, S; Maret, K H; Peters, R M; Pizzo, C J

    1983-05-01

    Barometric pressures were measured on Mt. Everest from altitudes of 5,400 (base camp) to 8,848 m (summit) during the American Medical Research Expedition to Everest. Measurements at 5,400 m were made with a mercury barometer, and above this most of the pressures were obtained with an accurate crystal-sensor barometer. The mean daily pressures were 400.4 +/- 2.7 (SD) Torr (n = 35) at 5,400 m, 351.0 +/- 1.0 Torr (n = 16) at 6,300 m, 283.6 +/- 1.5 Torr (n = 6) at 8,050 m, and 253.0 Torr (n = 1) at 8,848 m. All these pressures are considerably higher than those predicted from the ICAO Standard Atmosphere. The chief reason is that pressures at altitudes between 2 and 16 km are latitude dependent, being higher near the equator because of the large mass of cold air in the stratosphere of that region. Data from weather balloons show that the pressure at the altitude of the summit of Mt. Everest varies considerably with season, being about 11.5 Torr higher in midsummer than in midwinter. Although the mountain has been climbed without supplementary O2, the very low O2 partial pressure at the summit means that it is at the limit of man's tolerance, and even day-by-day variations in barometric pressure apparently affect maximal O2 uptake. PMID:6863078

  18. Effects of 7.5% Carbon Dioxide Inhalation on Anxiety and Mood in Cigarette Smokers

    PubMed Central

    Attwood, Angela S.; Ataya, Alia F.; Bailey, Jayne E.; Lightman, Stafford L.; Munafò, Marcus R.

    2016-01-01

    Cigarette smoking is associated with elevated risk of anxiety and mood disorder. Using the 7.5% carbon dioxide (CO2) inhalation model of anxiety induction, we examined the effects of smoking status and abstinence from smoking on anxiety responses. Physiological and subjective responses to CO2 and medical air were compared in smokers and non-smokers (Experiment One) and in overnight abstinent and non-abstinent smokers (Experiment Two). CO2 induced greater increases in blood pressure in non-smokers compared with smokers (ps < 0.043), and greater increases in anxiety (p = 0.005) and negative affect (p = 0.054) in non-abstinent compared with abstinent smokers. CO2 increased physiological and subjective indices of anxiety. There were differences across smoking groups indicating that the CO2 inhalation model is a useful tool for examining the relationship between smoking and anxiety. The findings suggested that both acute smoking and acute abstinence may protect against anxious responding. Further investigation is needed in long-term heavy smokers. PMID:24763184

  19. 10 CFR 7.5 - Consultation with Committee Management Secretariat on establishment of advisory committees...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 1 2014-01-01 2014-01-01 false Consultation with Committee Management Secretariat on establishment of advisory committees; advisory committee charters. 7.5 Section 7.5 Energy NUCLEAR REGULATORY... appropriate to the nature and functions of the committee. For purposes of attaining balance in an NRC...

  20. 10 CFR 7.5 - Consultation with Committee Management Secretariat on establishment of advisory committees...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 1 2012-01-01 2012-01-01 false Consultation with Committee Management Secretariat on establishment of advisory committees; advisory committee charters. 7.5 Section 7.5 Energy NUCLEAR REGULATORY... appropriate to the nature and functions of the committee. For purposes of attaining balance in an NRC...

  1. 10 CFR 7.5 - Consultation with Committee Management Secretariat on establishment of advisory committees...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 1 2013-01-01 2013-01-01 false Consultation with Committee Management Secretariat on establishment of advisory committees; advisory committee charters. 7.5 Section 7.5 Energy NUCLEAR REGULATORY... appropriate to the nature and functions of the committee. For purposes of attaining balance in an NRC...

  2. Historical and cultural roots of tobacco use among Aboriginal and Torres Strait Islander people.

    PubMed

    Brady, Maggie

    2002-04-01

    Tobacco smoking has been identified as a major contributor to the high morbidity and mortality rates of Aborigines and Torres Strait Islanders. After years of inattention, smoking cessation projects designed for Indigenous Australians are beginning to emerge. Dealing successfully with smoking cessation would be enhanced by an understanding of the long-standing historical, social and cultural antecedents to present-day usage of tobacco. This paper provides a brief account of the historical precursors to present-day patterns of tobacco use among Aboriginal and Torres Strait Islander people. Historical records and mission documents, together with ethnographic accounts, suggest that Indigenous tobacco use today demonstrates strong continuity with past patterns and styles of use. These sources also reveal that Europeans deliberately exploited Aboriginal addiction to nicotine. PMID:12054329

  3. Overseas-trained doctors in Aboriginal and Torres Strait Islander health services: many unanswered questions.

    PubMed

    Arkles, Rachelle S; Hill, Peter S; Pulver, Lisa R Jackson

    2007-05-21

    Aboriginal and Torres Strait Islander health services are heavily dependent on overseas-trained doctors (OTDs). These OTDs are increasingly from countries with variable English language and educational equivalency compared with locally trained doctors. Aboriginal and Torres Strait Islander health services create particular demands for all doctors, such as negotiating "cultural domains" and acknowledging the contribution of Aboriginal health workers. Little is known about the roles and experience of OTDs in health service provision in Indigenous communities. Barriers to effective research into the experience of OTDs include privacy legislation and a lack of standardised data. Researching the narratives of OTDs in Indigenous health services offers an opportunity to explore the diversity and complexity of the cultural interfaces in health service provision. PMID:17516902

  4. D Model of the Torres Syncline in the PARANÁ-ETENDEKA Province, South Atlantic Margin

    NASA Astrophysics Data System (ADS)

    Jerram, D. A.; Waichel, B. L.; Lima, E. F. D.; Rossetti, L. D. M. M.; Bueno, G. V.; Viana, A. R.; Barreto, C. J.

    2015-12-01

    The Paraná-Etendeka Volcanic Province (PEVP) is Early Cretaceous in age and precedes the fragmentation of the south Gondwana. These volcanic rocks cover an area in excess of 1,200,000 km2 and can reach a maximum thickness of 1,700 m. The PEVP is composed mainly of tholeiitic basalts and subordinately by andesites and rhyolites/quartz-latites. Recently new models considering physical characteristics of the lava flow stratigraphy on both sides, Africa and South America, have been built providing a new vision of the volcanic stratigraphy and flow morphologies inside the province. This work presents a 3D model of the volcanic sequence at theTorres Syncline (Brazil). The 3D model was build using the PETREL E&P Software Platform. Geological sections based on field data and Log data from Paraná Basin (Gama-ray and soniclogs) were used to build the model. The Torres Syncline is a tectonic structure located in southern Brazil with the main orientation NW-SE. In Torres Syncline the basal portion is characterized by pahoehoe lava flows in a compound braided architecture, followed by rubbly lavas in a tabular classic architecture, and in the upper portions silicic units interbedded with basaltic lavas. The central portion of the volcanic pile is characterized by thick tabular lavas with rubbly tops (25-50 m thick). These flows have an internal structure divided in four parts: a smooth vesicular base, aphanitic massive cores with irregular joints, upper vesicular portion and a rubbly top. This unit is thicker along of the Torres Syncline and represents the main phase of the volcanism. Silicic units occur in the upper parts of the PEVP stratigraphy and include lava domes interbedded with rubbly flows and thick tabular flows. The Torres Syncline and Huab constituted one Basin features single active structure in the Early Cretaceous and during the main rifting phase. The onset of the volcanism was characterized by low effusion rate eruptions over the paleoerg, forming pahoehoe

  5. Measurements of Methane at 7.5 μm Broadened by Nitrogen at Low Temperatures

    NASA Astrophysics Data System (ADS)

    Smith, Mary-Ann H.; Mantz, A. W.; Sung, K.; Brown, L. R.; Crawford, T. J.; Malathy Devi, V.; Benner, D. Chris

    2010-10-01

    Since the ν4 band system of methane (CH4) at 7.5 µm appears prominently in infrared spectra of Titan's atmosphere, we are conducting laboratory studies to examine the temperature-dependence of infrared transitions of CH4 broadened by N2 in this spectral region. Spectra of methane-nitrogen mixtures at temperatures from 79 to 297 K were obtained at 0.006 cm-1 resolution (resolving power = 2x105) using the Bruker IFS 125HR Fourier transform spectrometer at the Jet Propulsion Laboratory with new temperature-controlled gas cells designed specifically to fit in the spectrometer's sample compartment. Details of the cells and spectrometer performance [1] are described in an adjacent poster by Sung et al. A multispectrum nonlinear least squares technique [2] is used to fit selected intervals of 9 or more spectra simultaneously to obtain the temperature dependences of line broadening, pressure-induced shift and line mixing parameters. Results for 13CH4 at 80 to 297 K are discussed relative to our previous high-resolution studies of air- and self-broadened 12CH4 and 13CH4 [3-5] at terrestrial atmospheric temperatures (210 to 314 K). This research is supported by NASA's Planetary Atmospheres Program. 1. K. Sung et al., J. Mol. Spectrosc. (2010) doi:10.1016/j.jms.2010.05.004. 2. D. Chris Benner et al., J. Quant. Spectrosc. Radiat. Transfer 53 (1995) 705-721. 3. M. A. H. Smith et al., J. Quant. Spectrosc. Radiat. Transfer 110 (2009) 639-653. 4. M. A. H. Smith et al., J. Quant. Spectrosc. Radiat. Transfer 111 (2010) 1152-1166. 5. M. A. H. Smith et al., J. Quant. Spectrosc. Radiat. Transfer (2010) submitted.

  6. Analysis of AGS polarimeter data at G{gamma}=7.5.

    SciTech Connect

    Huang, H.; Cadman, R. V.; Spinka, H. M.; Underwood, D. G.

    2003-02-18

    Data were collected with the AGS internal polarimeter at G{gamma} = 7.5 during the recent FY02 polarized proton run. The addition of new forward scintillation counters permitted an absolute calibration of the polarimeter for both nylon and carbon targets. The results are summarized, and the polarization measured at G{gamma} = 7.5 is compared to that at 200 MeV.

  7. The Torres del Paine intrusion as a model for a shallow magma chamber

    NASA Astrophysics Data System (ADS)

    Baumgartner, Lukas; Bodner, Robert; Leuthold, Julien; Muntener, Othmar; Putlitz, Benita; Vennemann, Torsten

    2014-05-01

    The shallow magmatic Torres del Paine Intrusive Complex (TPIC) belongs to a series of sub-volcanic and plutonic igneous bodies in Southern Chile and Argentina. This trench-parallel belt is located in a transitional position between the Patagonia Batholith in the West, and the alkaline Cenozoic plateau lavas in the East. While volumetrically small amounts of magmatism started around 28 my ago in the Torres del Paine area, and a second period occurred between 17-16 Ma, it peaked with the TPIC 12.59-12.43 Ma ago. The spectacular cliffs of the Torres del Paine National park provide a unique opportunity to study the evolution of a very shallow magma chamber and the interaction with its host rocks. Intrusion depth can be estimated based on contact metamorphic assemblages and granite solidus thermobarometry to 750±250 bars, corresponding to an intrusion depth of ca. 3km, ca. 500m above the base of the intrusion. Hornblende thermobarometry in mafic rocks agrees well with these estimates (Leuthold et al., 2014). The TPIC is composed of a granitic laccolith emplaced over 90ka (Michel et al., 2008) in 3 major, several 100m thick sheets, forming an overall thickness of nearly 2 km. Contacts are sharp between sheets, with the oldest sheet on the top and the youngest on the bottom (Michel et al., 2008). The granitic laccolith is under-plated by a ca. 400m thick mafic laccolith, built up over ca. 50ka (Leuthold et al. 2012), constructed from the bottom up. Granitic and mafic sheets are themselves composed of multiple metric to decametric pulses, mostly with ductile contacts between them, resulting in outcrop patterns resembling braided stream sediments. The contact of the TPIC with the Cretaceous flysch sediments document intrusion mechanism. Pre-existing sub-horizontal fold axes are rotated in the roof of the TPIC, clearly demonstrating ballooning of the roof; no ballooning was observed in the footwall of the intrusion. Extension during ballooning of the roof is indicated by

  8. Understanding burn injuries in Aboriginal and Torres Strait Islander children: protocol for a prospective cohort study

    PubMed Central

    Ivers, Rebecca Q; Hunter, Kate; Clapham, Kathleen; Coombes, Julieann; Fraser, Sarah; Lo, Serigne; Gabbe, Belinda; Hendrie, Delia; Read, David; Kimble, Roy; Sparnon, Anthony; Stockton, Kellie; Simpson, Renee; Quinn, Linda; Towers, Kurt; Potokar, Tom; Mackean, Tamara; Grant, Julian; Lyons, Ronan A; Jones, Lindsey; Eades, Sandra; Daniels, John; Holland, Andrew J A

    2015-01-01

    Introduction Although Aboriginal and Torres Strait Islander children in Australia have higher risk of burns compared with non-Aboriginal children, their access to burn care, particularly postdischarge care, is poorly understood, including the impact of care on functional outcomes. The objective of this study is to describe the burden of burns, access to care and functional outcomes in Aboriginal and Torres Strait Islander children in Australia, and develop appropriate models of care. Methods and analysis All Aboriginal and Torres Strait Islander children aged under 16 years of age (and their families) presenting with a burn to a tertiary paediatric burn unit in 4 Australian States (New South Wales (NSW), Queensland, Northern Territory (NT), South Australia (SA)) will be invited to participate. Participants and carers will complete a baseline questionnaire; follow-ups will be completed at 3, 6, 12 and 24 months. Data collected will include sociodemographic information; out of pocket costs; functional outcome; and measures of pain, itch and scarring. Health-related quality of life will be measured using the PedsQL, and impact of injury using the family impact scale. Clinical data and treatment will also be recorded. Around 225 participants will be recruited allowing complete data on around 130 children. Qualitative data collected by in-depth interviews with families, healthcare providers and policymakers will explore the impact of burn injury and outcomes on family life, needs of patients and barriers to healthcare; interviews with families will be conducted by experienced Aboriginal research staff using Indigenous methodologies. Health systems mapping will describe the provision of care. Ethics and dissemination The study has been approved by ethics committees in NSW, SA, NT and Queensland. Study results will be distributed to community members by study newsletters, meetings and via the website; to policymakers and clinicians via policy fora, presentations and

  9. Using participatory action research to prevent suicide in Aboriginal and Torres Strait Islander communities.

    PubMed

    Cox, Adele; Dudgeon, Pat; Holland, Christopher; Kelly, Kerrie; Scrine, Clair; Walker, Roz

    2014-01-01

    The National Empowerment Project is an innovative Aboriginal-led community empowerment project that has worked with eight Aboriginal and Torres Strait Islander communities across Australia over the period 2012-13. The aim of the Project was to develop, deliver and evaluate a program to: (1) promote positive social and emotional well-being to increase resilience and reduce the high reported rates of psychological distress and suicide among Aboriginal and Torres Strait Islander people; and (2) empower communities to take action to address the social determinants that contribute to psychological distress, suicide and self-harm. Using a participatory action research approach, the communities were supported to identify the risk factors challenging individuals, families and communities, as well as strategies to strengthen protective factors against these challenges. Data gathered during Stage 1 were used to develop a 12-month program to promote social and emotional well-being and build resilience within each community. A common framework, based on the social and emotional well-being concept, was used to support each community to target community-identified protective factors and strategies to strengthen individual, family and community social and emotional well-being. Strengthening the role of culture is critical to this approach and marks an important difference between Aboriginal and Torres Strait Islander and non-Indigenous mental health promotion and prevention activities, including suicide prevention. It has significant implications for policy makers and service providers and is showing positive impact through the translation of research into practice, for example through the development of a locally run empowerment program that aims to address the social determinants of health and their ongoing negative impact on individuals, families and communities. It also provides a framework in which to develop and strengthen culture, connectedness and foster self

  10. The European species of Foersterella Dalla Torre (Hymenoptera: Tetracampidae), including the description of two new species.

    PubMed

    Hansson, Christer

    2016-01-01

    The European species of Foersterella Dalla Torre 1897 (Hymenoptera: Tetracampidae) are treated, including two previously described species, F. erdoesi Bouček and F. reptans (Nees), and two new species, F. angusticornis sp. nov. and F. fuscicornis sp. nov. Morphological concepts of the species are based mainly on characters in the male antenna, which females lack, and with the exception of F. erdoesi females are currently not possible to identify to species. A key for the identification of species is included, as well as illustrations to facilitate the identification. PMID:27470745

  11. Effects of the air pressure on the wave-packet dynamics of gaseous iodine molecules at room temperature

    NASA Astrophysics Data System (ADS)

    Fan, Rongwei; He, Ping; Chen, Deying; Xia, Yuanqin; Yu, Xin; Wang, Jialing; Jiang, Yugang

    2013-02-01

    Based on ultrafast laser pulses, time-resolved resonance enhancement coherent anti-Stokes Raman scattering (RE-CARS) is applied to investigate wave-packet dynamics in gaseous iodine. The effects of air pressure on the wave-packet dynamics of iodine molecules are studied at pressures ranging from 1.5 Torr to 750 Torr. The RE-CARS signals are recorded in a gas cell filled with a mixture of about 0.3 Torr iodine in air buffer gas at room temperature. The revivals and fractional revival structures in the wave-packet signal are found to gradually disappear with rising air pressure up to 750 Torr, and the decay behaviors of the excited B-state and ground X-state become faster with increasing air pressure, which is due to the collision effects of the molecules and the growing complexity of the spectra at high pressures.

  12. Processing of U-2.5Zr-7.5Nb and U-3Zr-9Nb alloys by sintering process

    SciTech Connect

    Dos Santos, A. M. M.; Ferraz, W. B.; Lameiras, F. S.; Mazzeu, T. D. O.

    2012-07-01

    To minimize the risk of nuclear proliferation, there is worldwide interest in reducing fuel enrichment of research and test reactors. To achieve this objective while still guaranteeing criticality and cycle length requirements, there is need of developing high density uranium metallic fuels. Alloying elements such as Zr, Nb and Mo are added to uranium to improve fuel performance in reactors. In this context, the Centro de Desenvolvimento da Tecnologia Nuclear (CDTN) is developing the U-2.5Zr-7.5Nb and U-3Zr-9Nb (weight %) alloys by the innovative process of sintering that utilizes raw materials in the form of powders. The powders were pressed at 400 MPa and then sintered under a vacuum of about 1x10{sup -4} Torr at temperatures ranging from 1050 deg. to 1500 deg.C. The densities of the alloys were measured geometrically and by hydrostatic method and the phases identified by X ray diffraction (XRD). The microstructures of the pellets were observed by scanning electron microscopy (SEM) and the alloying elements were analyzed by energy dispersive X-ray spectroscopy (EDS). The results obtained showed the fuel density to slightly increase with the sintering temperature. The highest density achieved was approximately 80% of theoretical density. It was observed in the pellets a superficial oxide layer formed during the sintering process. (authors)

  13. A validation of the 7.5% CO2 model of GAD using paroxetine and lorazepam in healthy volunteers.

    PubMed

    Bailey, Jayne E; Kendrick, Adrian; Diaper, Alison; Potokar, John P; Nutt, David J

    2007-01-01

    The inhalation of 7.5% carbon dioxide (CO2) in healthy subjects produces an increase in blood pressure and heart rate, and increased feelings of anxiety, fear and tension (Bailey et al. 2005). As this state is similar to that of general anxiety rather than panic, we further validated this by examining the effects of anxiolytic medication. Two separate studies in healthy volunteers are described; study one is a double-blind, placebo-controlled study of a single dose of 2 mg lorazepam and study two describes the effects of 21 days of treatment with paroxetine. Gas challenges were air and 7.5% CO2 inhaled for 20 minutes, delivered on day 0 (before treatment) and day 21 (after treatment) in the paroxetine study. Subjective effects were measured using visual analogue scales and questionnaires. When compared with placebo, lorazepam 2 mg significantly reduced peak CO2-induced subjective fear, feelings of wanting to leave, tension and worry. In the paroxetine study, when compared with day 0, day 21 showed a significantly attenuated peak CO2-induced nervousness and a trend for reduced ratings of anxiety, fear, feel like leaving, tense and worried. In these studies we have shown that this CO2 model of anxiety is sensitive to lorazepam and to a lesser extent paroxetine. This gives support to its utility as an experimental model of general anxiety disorder in healthy volunteers. PMID:16533865

  14. Anxiety sensitivity and trait anxiety are associated with response to 7.5% carbon dioxide challenge

    PubMed Central

    Fluharty, Meg E; Attwood, Angela S; Munafò, Marcus R

    2016-01-01

    The 7.5% carbon dioxide (CO2) inhalation model is used to provoke acute anxiety, for example to investigate the effects of anxiety on cognitive processes, or the efficacy of novel anxiolytic agents. However, little is known about the relationship of baseline anxiety sensitivity or trait anxiety (i.e., anxiety proneness), with an individual’s response to the 7.5% CO2 challenge. We examined data from a number of 7.5% CO2 challenge studies to determine whether anxiety proneness was related to subjective or physiological response. Our findings indicate anxiety proneness is associated with greater subjective and physiological responses. However, anxiety-prone individuals also have a greater subjective response to the placebo (medical air) condition. This suggests that anxiety-prone individuals not only respond more strongly to the 7.5% CO2 challenge, but also to medical air. Implications for the design and conduct of 7.5% CO2 challenge studies are discussed. PMID:26561530

  15. Genomics in research and health care with Aboriginal and Torres Strait Islander peoples.

    PubMed

    McWhirter, Rebekah; Nicol, Dianne; Savulescu, Julian

    2015-01-01

    Genomics is increasingly becoming an integral component of health research and clinical care. The perceived difficulties associated with genetic research involving Aboriginal and Torres Strait Islander people mean that they have largely been excluded as research participants. This limits the applicability of research findings for Aboriginal and Torres Strait Islander patients. Emergent use of genomic technologies and personalised medicine therefore risk contributing to an increase in existing health disparities unless urgent action is taken. To allow the potential benefits of genomics to be more equitably distributed, and minimise potential harms, we recommend five actions: (1) ensure diversity of participants by implementing appropriate protocols at the study design stage; (2) target diseases that disproportionately affect disadvantaged groups; (3) prioritise capacity building to promote Indigenous leadership across research professions; (4) develop resources for consenting patients or participants from different cultural and linguistic backgrounds; and (5) integrate awareness of issues relating to Indigenous people into the governance structures, formal reviews, data collection protocols and analytical pipelines of health services and research projects. PMID:26507135

  16. Isolation, identification and cytotoxicity of a new noroleanane-type triterpene saponin from Salicornia bigelovii Torr.

    PubMed

    Guan, Fuqin; Wang, Qizhi; Wang, Ming; Shan, Yu; Chen, Yu; Yin, Min; Zhao, Youyi; Feng, Xu; Liu, Fei; Zhang, Jianhua

    2015-01-01

    Salicornia bigelovii Torr. has been consumed not only as a popular kind of vegetable, but also as a medicinal plant to treat hypertension, cephalalgia, scurvy and cancer. The present study was designed to investigate its chemical components and cytotoxic activity. A new noroleanane-type triterpene saponin, bigelovii C (1), was separated and purified from Salicornia bigelovii Torr., along with four known triterpene saponins 2-5. The structure of bigelovii C was elucidated as 3-O-(6-O-butyl ester)-β-D-glucuropyranosyl-23-aldehyde-30-norolean-12, 20 (29)-dien-28-oic acid-28-O-β-D-glucopyranoside, according to various spectroscopic analysis and chemical characteristics. Besides Compounds 3 and 5, bigelovii C had potent cytotoxicity against three human cancer cell lines, MCF7 (breast cancer), Lovo (colon cancer) and LN229 (glioblastoma), especially MCF7. Bigelovii C inhibited the growth of MCF7 cells in dose- and time-dependent manners. Flow cytometry analysis revealed that the percentage of apoptotic cells significantly increased upon bigelovii C treatment. Rh123 staining assay indicated that bigelovii C reduced the mitochondrial membrane potential. The mechanism of cell death by bigelovii C may be attributed to the downregulation of Bcl-2 and upregulation of Bax, cleaved caspase-9, caspase-7 and PARP. These results suggested that bigelovii C may impart health benefits when consumed and should be regarded as a potential chemopreventative agent for cancer. PMID:25867827

  17. Precision ozone vapor pressure measurements

    NASA Technical Reports Server (NTRS)

    Hanson, D.; Mauersberger, K.

    1985-01-01

    The vapor pressure above liquid ozone has been measured with a high accuracy over a temperature range of 85 to 95 K. At the boiling point of liquid argon (87.3 K) an ozone vapor pressure of 0.0403 Torr was obtained with an accuracy of + or - 0.7 percent. A least square fit of the data provided the Clausius-Clapeyron equation for liquid ozone; a latent heat of 82.7 cal/g was calculated. High-precision vapor pressure data are expected to aid research in atmospheric ozone measurements and in many laboratory ozone studies such as measurements of cross sections and reaction rates.

  18. Carbonated sediment-peridotite interaction and melting at 7.5-12 GPa

    NASA Astrophysics Data System (ADS)

    Bulatov, V. K.; Brey, G. P.; Girnis, A. V.; Gerdes, A.; Höfer, H. E.

    2014-07-01

    To gain a better insight into deep subduction-zone processes, the interaction between model sediment and peridotite was experimentally studied using a multianvil apparatus at 7.5-12 GPa and 900-1400 °C. Two H2O- and CO2-bearing synthetic materials similar to GLOSS of Plank and Langmuir (1998) with different K/Na ratios were used. The peridotite (harzburgite) mixture consisted of natural olivine, orthopyroxene and garnet from kimberlite-derived xenoliths. Sediment (below) and peridotite (above) were packed into a Re-lined Pt capsule and exposed to constant pressure and temperature for 24-72 h. Several experiments were conducted with pure sediment mixtures. The experimental products were analyzed by EPMA and LA ICP MS. Pure sediment melting produces Ca-alkali carbonatite melts near the solidus and liquids richer in SiO2 at high temperatures. The residual mineral assemblage is dominated by coesite/stishovite, garnet, kyanite and jadeite. Peridotite-sediment interaction results in (1) replacement of olivine in the metaperidotite zone by low-Ca pyroxene and magnesite, (2) formation of a transitional garnet-rich zone containing low-Ca pyroxene and coesite/stishovite, and (3) disappearance of kyanite and stabilization of carbonate in the metasediment layer. The peridotite zone is transformed into a low-Ca pyroxene-garnet aggregate, and its garnet/pyroxene ratio increases with increasing temperature. The sediment zone evolves with increasing temperature from coesite / stishovite + jadeite + garnet + carbonate + rutile to coesite / stishovite + jadeite + garnet. Mass transfer is dominated by Si flux from sediment to peridotite and Mg and Fe from peridotite to sediment. The composition of the melts produced in the interaction experiments differs from that from pure sediment melting in higher Mg and Si contents and much lower Ca. Trace element partition coefficients (D) between residual minerals (pyroxenes, garnet, carbonate, zircon, rutile and SiO2 polymorphs) and melts

  19. CO adsorption and dissociation on Ru(0001) at elevated pressures

    NASA Astrophysics Data System (ADS)

    Starr, David E.; Bluhm, Hendrik

    2013-02-01

    We have investigated the adsorption and dissociation of CO on Ru(0001) surfaces at pressures from ultra-high vacuum up to 1 Torr and temperatures from 293 to 575 K using Ambient Pressure X-ray Photoelectron Spectroscopy (AP-XPS). At CO pressures above ~ 10- 6 Torr additional CO is adsorbed on the surface, leading to a CO coverage greater than the saturation coverage (0.66 ML) observed under UHV conditions. Binding energy shifts of the O 1s core level indicate that most of the additional adsorbed CO is located in bridge sites between two Ru atoms. At pressures above 10- 2 Torr the coverage of CO saturates at ~ 0.88 ML. Isobaric measurements at 0.04 Torr CO indicate that the bridge bonded CO is stable up to a temperature of ~ 350 K and desorbs entirely by ~ 400 K. Additional CO desorbs over the temperature range of ~ 450 K to ~ 485 K, decreasing the CO coverage to ~ 0.58 ML. Above 520 K we observe the build-up of carbon on the surface which we attribute to the dissociation of CO. At 575 K and 0.04 Torr CO the equivalent of ~ 3.8 ML of carbon is present on the Ru(0001) surface. Potential mechanisms for the formation of this large amount of carbon on the surface will be discussed.

  20. 43 CFR 3162.7-5 - Site security on Federal and Indian (except Osage) oil and gas leases.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... (except Osage) oil and gas leases. 3162.7-5 Section 3162.7-5 Public Lands: Interior Regulations Relating... (3000) ONSHORE OIL AND GAS OPERATIONS Requirements for Operating Rights Owners and Operators § 3162.7-5 Site security on Federal and Indian (except Osage) oil and gas leases. (a) Definitions....

  1. 43 CFR 3162.7-5 - Site security on Federal and Indian (except Osage) oil and gas leases.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... (except Osage) oil and gas leases. 3162.7-5 Section 3162.7-5 Public Lands: Interior Regulations Relating... (3000) ONSHORE OIL AND GAS OPERATIONS Requirements for Operating Rights Owners and Operators § 3162.7-5 Site security on Federal and Indian (except Osage) oil and gas leases. (a) Definitions....

  2. 43 CFR 3162.7-5 - Site security on Federal and Indian (except Osage) oil and gas leases.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... (except Osage) oil and gas leases. 3162.7-5 Section 3162.7-5 Public Lands: Interior Regulations Relating... (3000) ONSHORE OIL AND GAS OPERATIONS Requirements for Operating Rights Owners and Operators § 3162.7-5 Site security on Federal and Indian (except Osage) oil and gas leases. (a) Definitions....

  3. 43 CFR 3162.7-5 - Site security on Federal and Indian (except Osage) oil and gas leases.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... (except Osage) oil and gas leases. 3162.7-5 Section 3162.7-5 Public Lands: Interior Regulations Relating... (3000) ONSHORE OIL AND GAS OPERATIONS Requirements for Operating Rights Owners and Operators § 3162.7-5 Site security on Federal and Indian (except Osage) oil and gas leases. (a) Definitions....

  4. 10 CFR 7.5 - Consultation with Committee Management Secretariat on establishment of advisory committees...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 1 2011-01-01 2011-01-01 false Consultation with Committee Management Secretariat on... COMMISSION ADVISORY COMMITTEES § 7.5 Consultation with Committee Management Secretariat on establishment of... committee, the NRC shall consult with the Committee Management Secretariat. With a full understanding of...

  5. 4 CFR 7.5 - Adverse actions: Suspensions for 14 days or less.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... Section 7.5 Accounts GOVERNMENT ACCOUNTABILITY OFFICE PERSONNEL SYSTEM PERSONNEL RELATIONS AND SERVICES... writing and to furnish affidavits and other documentary evidence in support of the answer; (3) Be... therefor, and any order effecting the suspension, together with any supporting material, shall...

  6. 7.5-MINUTE DIGITAL RASTER GRAPHICS (DRG), VA PORTION OF ALBE

    EPA Science Inventory

    7.5-minute DRG for Virginia portion of Albemarle-Pamlico Estuary watershed. Files obtained from www.runet.edu:8800/~geoserve/Virginia.html at Radford University.
    Digital Raster Graphics (DRGs) come from the US Geological Survey in Universal Trans Mercator (UTM), North American...

  7. Comparison of 7.5-minute and 1-degree digital elevation models

    NASA Technical Reports Server (NTRS)

    Isaacson, Dennis L.; Ripple, William J.

    1995-01-01

    We compared two digital elevation models (DEM's) for the Echo Mountain SE quadrangle in the Cascade Mountains of Oregon. Comparisons were made between 7.5-minute (1:24,000-scale) and 1-degree (1:250,000-scale) images using the variables of elevation, slope aspect, and slope gradient. Both visual and statistical differences are presented.

  8. 39 CFR 7.5 - Public notice of meetings, subsequent changes.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... PUBLIC OBSERVATION (ARTICLE VII) § 7.5 Public notice of meetings, subsequent changes. (a) At least one... under paragraphs (a), (b), or (c) of this section, the Secretary shall submit for publication in the... submit the announcement and information to the Corporate Communications Department for dissemination...

  9. 39 CFR 7.5 - Public notice of meetings, subsequent changes.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... PUBLIC OBSERVATION (ARTICLE VII) § 7.5 Public notice of meetings, subsequent changes. (a) At least one... under paragraphs (a), (b), or (c) of this section, the Secretary shall submit for publication in the... submit the announcement and information to the Corporate Communications Department for dissemination...

  10. 39 CFR 7.5 - Public notice of meetings, subsequent changes.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... PUBLIC OBSERVATION (ARTICLE VII) § 7.5 Public notice of meetings, subsequent changes. (a) At least one... under paragraphs (a), (b), or (c) of this section, the Secretary shall submit for publication in the... submit the announcement and information to the Corporate Communications Department for dissemination...

  11. 39 CFR 7.5 - Public notice of meetings, subsequent changes.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... PUBLIC OBSERVATION (ARTICLE VII) § 7.5 Public notice of meetings, subsequent changes. (a) At least one... under paragraphs (a), (b), or (c) of this section, the Secretary shall submit for publication in the... submit the announcement and information to the Corporate Communications Department for dissemination...

  12. Comparison of 7.5-minute and 1-degree digital elevation models

    NASA Technical Reports Server (NTRS)

    Isaacson, Dennis L.; Ripple, William J.

    1990-01-01

    Two digital elevation models are compared for the Echo Mountain SE quadrangle in the Cascade Mountains of Oregon. Comparisons were made between 7.5-minute (1:24,000-scale) and 1-degree (1:250,000-scale) images using the variables of elevation, slope aspect, and slope gradient. Both visual and statistical differences are presented.

  13. Minimizing Residual Pressure within a Windowless Gas Target System - JENSA

    NASA Astrophysics Data System (ADS)

    Gomez, Orlando; Browne, Justin; Kontos, Antonios; Montes, Fernando; Jensa Collaboration

    2015-04-01

    Nuclear reactions between light gases and radioactive isotope beams are essential to address open questions in nuclear structure and astrophysics. Pure light gas targets are critical for the measurements of proton- and alpha-induced reactions. J _ et E _ xperiments in N _ uclear S _ tructure and A _ strophysics (JENSA) is the world's most dense (~ 1019 atoms/cm2) windowless gas target system. Most of the gas flow is localized; however, escaping gas creates a pressure gradient which degrades experimental measurements and contaminates the beam line. JENSA contains a differential pumping system to maintain a vacuum. The previous design configuration was not optimized for experiments (pressure measurements 70 cm downstream from the jet were ~ 10-3 torr; optimal is less than 10-4 torr). We have altered the current differential pumping system to minimize the residual pressure profile. Several configurations of two gas-receiving catchers were tested, and the most efficient ones identified using Enhanced Pirani and Cold Cathode gauges. We have determined the 30 mm outer and 20 mm inner gas-receiving cones minimize JENSA central chamber pressure to 200 millitorr at 16,000 torr of discharge pressure. Altering the tubing configuration has additionally lowered the pressure 70 cm downstream to 10-5 torr. The new residual pressure allows operation of JENSA with planned expansion of a recoil mass separator SECAR.

  14. Screening for rheumatic heart disease in Aboriginal and Torres Strait Islander children.

    PubMed

    Rémond, Marc Gerard Wootton; Wark, Emma Kathleen; Maguire, Graeme Paul

    2013-07-01

    Rheumatic heart disease is preventable but causes significant morbidity and mortality in Aboriginal Australian and Torres Strait Islander populations. Screening echocardiography has the potential to detect early rheumatic heart disease thereby enabling timely commencement of treatment (secondary prophylaxis) to halt disease progression. However, a number of issues prevent echocardiographic screening for rheumatic heart disease satisfying the Australian criteria for acceptable screening programs. Primarily, it is unclear what criteria should be used to define a positive screening result as questions remain regarding the significance, natural history and potential treatment of early and subclinical rheumatic heart disease. Furthermore, at present the delivery of secondary prophylaxis in Australia remains suboptimal such that the potential benefits of screening would be limited. Finally, the impact of echocardiographic screening for rheumatic heart disease on local health services and the psychosocial health of patients and families are yet to be ascertained. PMID:23638751

  15. Which way? Educating for nursing Aboriginal and Torres Strait Islander peoples.

    PubMed

    Fredericks, Bronwyn

    2006-10-01

    Cross-Cultural Awareness Training has been seen as a way to improve nurses' knowledge and understanding of Indigenous peoples in Australia (Aboriginal and Torres Strait Islanders) and to therefore improve service delivery and therapeutic care to them. Nurses may have undertaken this type of training in their workplace or as part of nurse education in an undergraduate degree program. In asking Which Way in regards to this type of training and education, this paper includes the views of a selection of Aboriginal women and highlights the need to extend beyond Cross-Cultural Awareness Training to Anti-Racism Training. Furthermore, that Anti-Racism Training and addressing white race privilege is required in order to address the inequities within the health system, the marginalisation and disempowerment of Indigenous peoples. PMID:17083322

  16. Later Middle Pleistocene human remains from the Almonda Karstic system, Torres Novas, Portugal.

    PubMed

    Trinkaus, Erik; Marks, Anthony E; Brugal, Jean Philip; Bailey, Shara E; Rink, W Jack; Richter, Daniel

    2003-09-01

    Later Middle Pleistocene archeological deposits of the Galeria Pesada (Gruta da Aroeira), Almonda Karstic System, Torres Novas, Portugal, yielded two archaic human teeth, a mandibular canine and a maxillary third molar. The C(1)presents moderate and asymmetrical shoveling with a stout root. The slightly worn M(3)exhibits at least four cusps with a large hypocone, three roots with large radicular plates, and an absence of taurodontism. They are moderately large for later Middle Pleistocene humans in their buccolingual crown diameters, although the M(3)mesiodistal diameter is modest. The C(1)exhibits labial calculus and multiple linear hypoplastic defects, but the M(3)is lesion free. Both teeth are morphologically similar to those of other Middle Pleistocene European humans and reinforce a pattern of dental hypertrophy among these archaic Homo. PMID:14580591

  17. The genetic basis of Muir-Torre syndrome includes the hMLH1 locus

    SciTech Connect

    Bapat, B.; Xia, L.; Mitri, A.

    1996-09-01

    Muir-Torre syndrome (MTS) (McKusick 158320) is an autosomal dominant disorder characterized by the development of sebaceous gland tumors and skin cancers, including keratoacanthomas and basal cell carcinomas. Affected family members may manifest a wide spectrum of internal malignancies, which include colorectal, endometrial, urologic, and upper gastrointestinal neoplasms. Sebaceous gland tumors, which are rare in the general population, are considered to be the hallmark of MTS and may arise prior to the development of other visceral cancers. Despite the high incidence of synchronous and metachronous tumors, prognosis is often favorable. Hereditary nonpolyposis colorectal cancer (HNPCC) is one of the most common autosomal dominantly inherited colorectal cancer susceptibility syndromes. In some HNPCC families, extracolonic tumors of the endometrium, ovary, small bowel, and renal and biliary tract occur at an increased frequency. On the basis of similarities in clinical symptoms of MTS and HNPCC, it is proposed that these two syndromes may have a common genetic basis. 24 refs., 2 figs.

  18. Muir-Torre syndrome (MTS): An update and approach to diagnosis and management.

    PubMed

    John, Ann M; Schwartz, Robert A

    2016-03-01

    Muir-Torre syndrome (MTS) is a rare genetic condition that predisposes individuals to skin tumors and visceral malignancies. Because of the potentially aggressive nature of internal malignancies and sebaceous carcinoma, and the tendency to have multiple low-grade visceral cancers, close cancer surveillance is required in individuals and their families with this usually autosomal dominant disorder. Although the majority of MTS is caused by mutations in DNA mismatch repair genes resulting in microsatellite instability, a newly described subtype of MTS does not demonstrate microsatellite instability and may be inherited in an autosomal recessive pattern. In addition, MTS may be unmasked in transplant recipients taking specific immunosuppressant drugs or other immunosuppressed patients. Neoplasms may be subject to immunohistochemistry or both immunohistochemistry and genetic testing to confirm the diagnosis of MTS. Here, we offer an update and an approach to the diagnosis and management of MTS with a particular emphasis on the role of immunohistochemistry and genetic testing. PMID:26892655

  19. Seagrass-Watch: Engaging Torres Strait Islanders in marine habitat monitoring

    NASA Astrophysics Data System (ADS)

    Mellors, Jane E.; McKenzie, Len J.; Coles, Robert G.

    2008-09-01

    Involvement in scientifically structured habitat monitoring is a relatively new concept to the peoples of Torres Strait. The approach we used was to focus on awareness, and to build the capacity of groups to participate using Seagrass-Watch as the vehicle to provide education and training in monitoring marine ecosystems. The project successfully delivered quality scientifically rigorous baseline information on the seasonality of seagrasses in the Torres Strait—a first for this region. Eight seagrass species were identified across the monitoring sites. Seagrass cover varied within and between years. Preliminary evidence indicated that drivers for seagrass variability were climate related. Generally, seagrass abundance increased during the north-west monsoon ( Kuki), possibly a consequence of elevated nutrients, lower tidal exposure times, less wind, and higher air temperatures. Low seagrass abundance coincided with the presence of greater winds and longer periods of exposure at low tides during the south-east trade wind season ( Sager). No seasonal patterns were apparent when frequency of disturbance from high sedimentation and human impacts was high. Seagrass-Watch has been incorporated in to the Thursday Island High School's Marine Studies Unit ensuring continuity of monitoring. The students, teachers, and other interested individuals involved in Seagrass-Watch have mastered the necessary scientific procedures to monitor seagrass meadows, and developed skills in coordinating a monitoring program and skills in mentoring younger students. This has increased the participants' self-esteem and confidence, and given them an insight into how they may participate in the future management of their sea country.

  20. Sleep Disorders in Aboriginal and Torres Strait Islander People and Residents of Regional and Remote Australia

    PubMed Central

    Woods, Cindy E.; McPherson, Karen; Tikoft, Erik; Usher, Kim; Hosseini, Fariborz; Ferns, Janine; Jersmann, Hubertus; Antic, Ral; Maguire, Graeme Paul

    2015-01-01

    Study Objectives: To compare the use of sleep diagnostic tests, the risks, and cofactors, and outcomes of the care of Indigenous and non-indigenous Australian adults in regional and remote Australia in whom sleep related breathing disorders have been diagnosed. Methods: A retrospective cohort study of 200 adults; 100 Aboriginal and Torres Strait Islander and 100 non-indigenous adults with a confirmed sleep related breathing disorder diagnosed prior to September 2011 at Alice Springs Hospital and Cairns Hospital, Australia. Results: Results showed overall Indigenous Australians were 1.8 times more likely to have a positive diagnostic sleep study performed compared with non-indigenous patients, 1.6 times less likely in central Australia and 3.4 times more likely in far north Queensland. All regional and remote residents accessed diagnostic sleep studies at a rate less than Australia overall (31/100,000/y (95% confidence interval, 21–44) compared with 575/100,000/y). Conclusion: The barriers to diagnosis and ongoing care are likely to relate to remote residence, lower health self-efficacy, the complex nature of the treatment tool, and environmental factors such as electricity and sleeping area. Indigeneity, remote residence, environmental factors, and low awareness of sleep health are likely to affect service accessibility and rate of use and capacity to enhance patient and family education and support following a diagnosis. A greater understanding of enablers and barriers to care and evaluation of interventions to address these are required. Commentary: A commentary on this article appears in this issue on page 1255. Citation: Woods CE, McPherson K, Tikoft E, Usher K, Hosseini F, Ferns J, Jersmann H, Antic R, Maguire GP. Sleep disorders in Aboriginal and Torres Strait Islander people and residents of regional and remote Australia. J Clin Sleep Med 2015;11(11):1263–1271. PMID:26094934

  1. Atmospheric pressure sample inlet for mass spectrometers

    NASA Astrophysics Data System (ADS)

    Dheandhanoo, Seksan; Ciotti, Ralph J.; Ketkar, Suhas N.

    2000-12-01

    An inlet for a mass spectrometer has been developed for direct sampling of gases over a wide range of pressure (1-760 Torr). The sample inlet is composed of two small orifices that form a pressure reduction region. These orifices are used to limit the flow of sample gas into the mass spectrometer. The pressure inside the pressure reduction region is regulated by a needle valve and a vacuum pump. The flow of gas through the orifices is viscous. The inlet is made of stainless steel and operated at high temperature to prevent surface adsorption and corrosion. Its adaptability to a wide range of pressures is very useful for monitoring process gases during manufacturing processes of microelectronic devices. This inlet can be used for effluent gas analysis at 760 Torr as well as for in situ monitoring of the semiconductor equipment at pressures less than 5 Torr. The inlet provides a fast response to changes in the constituents of gas samples without memory effects. The sample inlet has been tested extensively in the laboratory as well as in field environments.

  2. Some possible filler alloys with low vapor pressures for refractory-metal brazing

    NASA Technical Reports Server (NTRS)

    Morris, J. F.

    1973-01-01

    A compilation of eutectics and melting-point minima for binary combinations of metals having vapor pressures below 10 to the minus 10th power torr at 1500 degrees K and .00005 torr at 2000 degree K is presented. These compositions and others near them on their phase diagrams are potential special brazing fillers for refractory metals. Some possible problems and advantages for fusion bonds of such mixtures are indicated. Evaluations of brazing fillers containing refractory metals are reported.

  3. Wave numbers and pressure-induced shifts of Ar I atomic lines measured by Fourier transform spectroscopy

    NASA Astrophysics Data System (ADS)

    Veza, Damir; Sansonetti, Craig J.; Salit, Marc L.; Travis, John C.

    2012-06-01

    Wave numbers and pressure-induced shifts of 19 blue argon emission lines belonging to the 3p56p-3p54s and 3p55p-3p54s transition arrays were measured with high accuracy using a UV/visible Fourier transform spectrometer (FTS). The measurements were made using electrodeless lamps containing traces of 198Hg and argon at pressures of 33 Pa (1/4 Torr), 400 Pa (3 Torr), 933 Pa (7 Torr) and 1333 Pa (10 Torr). Calibration of the FTS wave number scale was obtained using the four most prominent lines of 198Hg as internal standards. The pressure-induced shifts of the argon emission lines are in reasonable agreement with theoretical predictions. These results are of importance for astronomers and analytical chemists who use argon lines for practical wavelength standards as well as for theoreticians calculating argon-argon interactions and potential energy curves of diatomic argon molecules.

  4. Plasma variables and tribological properties of coatings in low pressure (0.1 - 10.0 torr) plasma systems

    NASA Technical Reports Server (NTRS)

    Avni, R.; Spalvins, T.

    1984-01-01

    A detailed treatment is presented of the dialog known as plasma surface interactions (PSI) with respect to the coating process and its tribological behavior. Adsorption, morphological changes, defect formation, sputtering, chemical etching, and secondary electron emission are all discussed as promoting and enhancing the surface chemistry, thus influencing the tribological properties of the deposited flux. Phenomenological correlations of rate of deposition, flux composition, microhardness, and wear with the plasma layer variables give an insight to the formation of chemical bonding between the deposited flux and the substrate surface.

  5. Geologic map of the Battle Ground 7.5-minute quadrangle, Clark County, Washington

    USGS Publications Warehouse

    Howard, Keith A.

    2002-01-01

    This digital map database, compiled from previously published and unpublished data, and new mapping by the authors, represents the general distribution of bedrock and surficial deposits of the Battle Ground 7.5 minute quadrangle. The database delineates map units that are identified by general age and lithology following the stratigraphic nomenclature of the U.S. Geological Survey. The scale of the source maps limits the spatial resolution (scale) of the database to 1:24,000 or smaller.

  6. Simple pressure gauge for uranium hexafluoride.

    PubMed

    George, P M; Swanson, M N; Beauchamp, J L

    1979-12-01

    A sensitive detector and pressure gauge for uranium hexafluoride in high-vacuum systems is described. Negative surface ionization of UF(6) occurs on ribbon filaments operated at temperatures too low for electron emission to be significant. The ion current measured on a cylindrical collector surrounding the filament assembly varies regularly with UF(6) pressure below 10(-3) Torr. Different filament materials are considered, including rhenium, thoriated tungsten, and platinum. Rhenium is found to be the most satisfactory material for operation of diode emitters as a pressure gauge. Gauge constants (in A Torr(-1)) are derived from comparing negative surface ionization currents with the response of a capacitance manometer and are shown to be independent of temperature within a reasonable operating range. The effects of exposing the rhenium filament to various gases is considered, and it is shown that brief exposure to acetylene substantially improves the operating characteristics of the gauge. PMID:18699453

  7. Everywhere and Nowhere: Invisibility of Aboriginal and Torres Strain Islander Contact Languages in Education and Indigenous Language Contexts

    ERIC Educational Resources Information Center

    Sellwood, Juanita; Angelo, Denise

    2013-01-01

    The language ecologies of Aboriginal and Torres Strait Islander communities in Queensland are characterised by widespread language shift to contact language varieties, yet they remain largely invisible in discourses involving Indigenous languages and education. This invisibility--its various causes and its many implications--are explored through a…

  8. Mobile Devices for Tertiary Study--Philosophy Meets Pragmatics for Remote Aboriginal and Torres Strait Islander Women

    ERIC Educational Resources Information Center

    Townsend, Philip

    2015-01-01

    This paper outlines PhD research which suggests mobile learning fits the cultural philosophies and roles of Aboriginal and Torres Strait Islander women who are preservice teachers in the very remote Australian communities where the research was conducted. The problem which the research addresses is the low completion rates for two community-based…

  9. Establishing a Community-Controlled Multi-Institutional Centre for Clinical Research Excellence in Aboriginal and Torres Strait Islander Health

    ERIC Educational Resources Information Center

    Pearce, Leilani; Fredericks, Bronwyn

    2007-01-01

    The Queensland Aboriginal and Islander Health Council (QAIHC) lead and govern the Centre for Clinical Research Excellence (CCRE), which has a focus on circulatory and associated conditions in urban Aboriginal and Torres Strait Islander communities. The CCRE is a partnership between QAIHC and Monash University, the Queensland University of…

  10. The Fallacy of the Bolted Horse: Changing Our Thinking about Mature-Age Aboriginal and Torres Strait Islander University Students

    ERIC Educational Resources Information Center

    Plater, Suzanne; Mooney-Somers, Julie; Lander, Jo

    2015-01-01

    The aim of this article is to critically review and analyse the public representations of mature-age university students in developed and some developing nations and how they compare to the public representations of mature-age Aboriginal and Torres Strait Islander university students in Australia ("students" also refers to graduates…

  11. Diabetic Foot Care: Developing Culturally Appropriate Educational Tools for Aboriginal and Torres Strait Islander Peoples in the Northern Territory, Australia.

    ERIC Educational Resources Information Center

    Watson, Jennifer; Obersteller, Elizabeth A.; Rennie, Linda; Whitbread, Cherie

    2001-01-01

    Participatory research in Australia's Northern Territory sought opinions from nurses, general practitioners, Aboriginal health workers, and Aboriginal and Torres Strait Islanders on the development of culturally relevant foot care education for Indigenous people with diabetes. They decided to use a visual approach (posters and flip charts) to…

  12. Hemodynamic, hematologic and eicosanoid mediated mechanisms in 7.5 percent sodium chloride treatment of uncontrolled hemorrhagic shock.

    PubMed

    Rabinovici, R; Yue, T L; Krausz, M M; Sellers, T S; Lynch, K M; Feuerstein, G

    1992-10-01

    Hypertonic saline solution (HTS) (7.5 percent sodium chloride [NaCl]) treatment (5 milliliters per kilogram) of rats subjected to uncontrolled hemorrhagic shock (n = 7) caused an initial partial recovery of blood pressure (+38 +/- 5 percent, p<0.05) and cardiac index (+48 +/- 6 percent, p<0.01) followed by increased bleeding (+53 +/- 5 percent versus rats treated with 0.9 percent NaCl, p<0.05), secondary shock (mean arterial pressure [MAP] 23 +/- 7 millimeters of mercury, p<0.01) and decreased survival (-54 +/- 15 minutes versus control, p<0.05). The increased blood loss resulted from: 1, increased vascular pressure and vasodilatation (total peripheral resistance index -27 +/- 5 percent, p<0.05), as initial bleeding occurred when MAP and cardiac index are increased compared with the control group (+88 +/- 10 percent, p<0.05 and +82 +/- 7 percent, p<0.01, respectively) and as the concomitant infusion of angiotensin II, a potent vasoconstrictor, delayed the HTS-induced bleeding (resumed at 60 minutes), and 2, a defect in platelet aggregation reflected by decreased adenosine diphosphate (ADP)-induced maximal aggregation (-79 percent versus rats treated with 0.9 percent NaCl, p<0.05) and increased EC50 of ADP (+159 percent, p<0.05). These hemodynamic and hematologic responses might be mediated at least in part by prostacyclin, a vasodilator and antiplatelet aggregator, as HTS-treated rats markedly elevated the 6-keto-PGF1 alpha per thromboxane B2 ratio (+140 +/- 12 percent, p<0.01) and pretreatment with indomethacin decreased blood loss and improved MAP and survival. These data point out potential untoward hemodynamic and hematologic consequences of HTS treatment in traumatic injury in which control of bleeding cannot be confirmed. PMID:1411892

  13. Glacial geomorphology of the Torres del Paine region (southern Patagonia): Implications for glaciation, deglaciation and paleolake history

    NASA Astrophysics Data System (ADS)

    García, Juan-Luis; Hall, Brenda L.; Kaplan, Michael R.; Vega, Rodrigo M.; Strelin, Jorge A.

    2014-01-01

    The processes affecting paleoclimate variability and Pleistocene glacial landscape development in the southern mid-latitudes remain poorly understood, in part because of the scarcity of comprehensive, well-studied records. Glacial landforms are invaluable for reconstructing past ice-sheet, climate, and associated environmental changes along the southern Andes, but there are significant spatial and temporal gaps in existing data. In this paper, we present new geomorphic and sedimentologic analyses, including surficial maps, for the Torres del Paine region (51°S, 73°W), southern South America. Our findings provide a new framework for understanding changes in the regional glacier history and Pleistocene landscape development. Glacial extent during the local last glacial maximum (LGM) remains unknown but new chronological data supported by geomorphic evidence afford evidence for a larger ice sheet at Torres del Paine than previously assumed. Deglaciation from the local LGM was underway by 17,400 ± 200 (1σ) cal. yr. BP. As opposed to previous suggestions, we have found that most of the moraines fringing the lakes in the Torres del Paine national park were deposited during a late-glacial expansion that occurred between 14,100 and 12,500 cal. yr. BP. Late-glacial advances also have been documented recently for the Última Esperanza and Lago Argentino basins to the south and north of Torres del Paine, respectively, suggesting an overall regional ice response to a climate signal. The Tehuelche paleolake accompanied each of the ice-sheet fluctuations in Torres del Paine. New data document at least three main phases of this paleolake, which drained eastward to the Atlantic Ocean, while the Andes gaps were blocked with ice. During the late phase of glacial lake formation, when water levels reached 125-155 m a.s.l., the lake likely merged with paleolake Consuelo in the Última Esperanza area at the end of the last glaciation. Lake Tehuelche in Torres del Paine had drained

  14. The Last Glacial Maximum and Termination in the Torres del Paine Region, Southern South America

    NASA Astrophysics Data System (ADS)

    Garcia, J.; Hall, B. L.; Kaplan, M. R.; Vega, R. M.; Binnie, S.; Gómez, G.; Santana, F.

    2012-12-01

    Deciphering the timing, structure and termination of the local last glacial maximum (LGM) throughout Patagonia (42-55 S) remains one of the key unsolved paleoclimate questions in Quaternary sciences. During the last glaciation, the Patagonian ice sheet formed one ice body along the Patagonian Andes (42-55 S) in southern South America, but previous work has revealed different spatiotemporal ice dynamics along the eastern and western ice margins. The Patagonian Andes is the only landmass that exists at this latitude confronting the southern westerly wind belt, which seems to have played a key role in past glacial and climate changes. Therefore, reconstructing southern Andes glacier history constitutes a key element for understanding the causes of glaciations in the Southern Hemisphere. Major progress has been made to document the local Late-Pleistocene glacier history, particularly in response to recent application of exposure-cosmogenic dating technique in the region, although only sparse well-dated paleoclimate records exist in this vast area. LGM moraine-based records in south Patagonia (~48-55 S) have been developed for the Strait of Magellan area, where full glacial conditions seems to have occurred between ~28.0 - 17.5 ka. Despite that these data seem to confirm previous glacial chronologies developed in north Patagonia and the Chilean Lake District (40-42 S), recent works in Torres del Paine and Última Esperanza basins (50-51 S), suggest that glacial maximum conditions may have occurred earlier (i.e., during Marine Isotope Stage 3) and that ice extent could have been twice the size of previously thought. Here, we discuss paleoclimatological implications from our 10Be and 26Al-dating program of moraines in the Torres del Paine region in southern Patagonia. We focused our efforts in the previously undated Río de las Viscachas (RV) I and II moraines, which occur distal to the late-glacial TDP II, III and IV moraines that enclose present lake bodies at the

  15. Aboriginal and Torres Strait Islander Worldviews and Cultural Safety Transforming Sexual Assault Service Provision for Children and Young People

    PubMed Central

    Funston, Leticia

    2013-01-01

    Child Sexual Assault (CSA) in Aboriginal and Torres Strait Islander communities is a complex issue that cannot be understood in isolation from the ongoing impacts of colonial invasion, genocide, assimilation, institutionalised racism and severe socio-economic deprivation. Service responses to CSA are often experienced as racist, culturally, financially and/or geographically inaccessible. A two-day forum, National Yarn Up: Sharing the Wisdoms and Challenges of Young People and Sexual Abuse, was convened by sexual assault services to identify the main practice and policy concerns regarding working with Aboriginal and Torres Strait Islander children and young people (C&YP), families and communities in the context of CSA. The forum also aimed to explore how services can become more accountable and better engaged with the communities they are designed to support. The forum was attended by eighty invited Aboriginal and Torres Strait Islander and non-Aboriginal youth sexual assault managers and workers representing both “victim” and “those who sexually harm others” services. In keeping with Aboriginal Community-Based Research methods forum participants largely directed discussions and contributed to the analysis of key themes and recommendations reported in this article. The need for sexual assault services to prioritise cultural safety by meaningfully integrating Aboriginal and Torres Strait Islander Worldviews emerged as a key recommendation. It was also identified that collaboration between “victims” and “those who sexually harm” services are essential given Aboriginal and Torres Strait Islander C&YP who sexually harm others may have also been victims of sexual assault or physical violence and intergenerational trauma. By working with the whole family and community, a collaborative approach is more likely than the current service model to develop cultural safety and thus increase the accessibility of sexual assault services. PMID:23975109

  16. Aboriginal and Torres Strait Islander worldviews and cultural safety transforming sexual assault service provision for children and young people.

    PubMed

    Funston, Leticia

    2013-09-01

    Child Sexual Assault (CSA) in Aboriginal and Torres Strait Islander communities is a complex issue that cannot be understood in isolation from the ongoing impacts of colonial invasion, genocide, assimilation, institutionalised racism and severe socio-economic deprivation. Service responses to CSA are often experienced as racist, culturally, financially and/or geographically inaccessible. A two-day forum, National Yarn Up: Sharing the Wisdoms and Challenges of Young People and Sexual Abuse, was convened by sexual assault services to identify the main practice and policy concerns regarding working with Aboriginal and Torres Strait Islander children and young people (C&YP), families and communities in the context of CSA. The forum also aimed to explore how services can become more accountable and better engaged with the communities they are designed to support. The forum was attended by eighty invited Aboriginal and Torres Strait Islander and non-Aboriginal youth sexual assault managers and workers representing both "victim" and "those who sexually harm others" services. In keeping with Aboriginal Community-Based Research methods forum participants largely directed discussions and contributed to the analysis of key themes and recommendations reported in this article. The need for sexual assault services to prioritise cultural safety by meaningfully integrating Aboriginal and Torres Strait Islander Worldviews emerged as a key recommendation. It was also identified that collaboration between "victims" and "those who sexually harm" services are essential given Aboriginal and Torres Strait Islander C&YP who sexually harm others may have also been victims of sexual assault or physical violence and intergenerational trauma. By working with the whole family and community, a collaborative approach is more likely than the current service model to develop cultural safety and thus increase the accessibility of sexual assault services. PMID:23975109

  17. Providing culturally appropriate mental health first aid to an Aboriginal or Torres Strait Islander adolescent: development of expert consensus guidelines

    PubMed Central

    2014-01-01

    Background It is estimated that the prevalence of mental illness is higher in Aboriginal and Torres Strait Islander adolescents compared to non-Aboriginal adolescents. Despite this, only a small proportion of Aboriginal youth have contact with mental health services, possibly due to factors such as remoteness, language barriers, affordability and cultural sensitivity issues. This research aimed to develop culturally appropriate guidelines for anyone who is providing first aid to an Australian Aboriginal or Torres Strait Islander adolescent who is experiencing a mental health crisis or developing a mental illness. Methods A panel of Australian Aboriginal people who are experts in Aboriginal youth mental health, participated in a Delphi study investigating how members of the public can be culturally appropriate when helping an Aboriginal or Torres Strait Islander adolescent with mental health problems. The panel varied in size across the three sequential rounds, from 37–41 participants. Panellists were presented with statements about cultural considerations and communication strategies via online questionnaires and were encouraged to suggest additional content. All statements endorsed as either Essential or Important by ≥ 90% of panel members were written into a guideline document. To assess the panel members’ satisfaction with the research method, participants were invited to provide their feedback after the final survey. Results From a total of 304 statements shown to the panel of experts, 194 statements were endorsed. The methodology was found to be useful and appropriate by the panellists. Conclusion Aboriginal and Torres Strait Islander Youth mental health experts were able to reach consensus about what the appropriate communication strategies for providing mental health first aid to an Aboriginal and Torres Strait Islander adolescent. These outcomes will help ensure that the community provides the best possible support to Aboriginal adolescents who

  18. Photosynthetic responses of subtidal seagrasses to a daily light cycle in Torres Strait: A comparative study

    NASA Astrophysics Data System (ADS)

    Campbell, Stuart J.; Kerville, Simon P.; Coles, Robert G.; Short, Fred

    2008-09-01

    In this study, we examined the photosynthetic responses of five common seagrass species from a typical mixed meadow in Torres Strait at a depth of 5-7 m using pulse amplitude modulated (PAM) fluorometry. The photosynthetic response of each species was measured every 2 h throughout a single daily light cycle from dawn (6 am) to dusk (6 pm). PAM fluorometry was used to generate rapid light curves from which measures of electron transport rate (ETR max), photosynthetic efficiency ( α), saturating irradiance ( E k) and light-adapted quantum yield (Δ F/ F' m) were derived for each species. The amount of light absorbed by leaves (absorption factor) was also determined for each species. Similar diurnal patterns were recorded among species with 3-4 fold increases in maximal electron rate from dawn to midday and a maintenance of ETR max in the afternoon that would allow an optimal use of low light by all species. Differences in photosynthetic responses to changes in the daily light regime were also evident with Syringodium isoetifolium showing the highest photosynthetic rates and saturating irradiances suggesting a competitive advantage over other species under conditions of high light. In contrast Halophila ovalis, Halophila decipiens and Halophila spinulosa were characterised by comparatively low photosynthetic rates and minimum light requirements (i.e. low E k) typical of shade adaptation. The structural makeup of each species may explain the observed differences with large, structurally complex species such as Syringodium isoetifolium and Cymodocea serrulata showing high photosynthetic effciciencies ( α) and therefore high-light-adapted traits (e.g. high ETR max and E k) compared with the smaller Halophila species positioned lower in the canopy. For the smaller Halophila species these shade-adapted traits are features that optimise their survival during low-light conditions. Knowledge of these characteristics and responses improves our understanding of the underlying

  19. Stratigraphical framework of basaltic lavas in Torres Syncline main valley, southern Parana-Etendeka Volcanic Province

    NASA Astrophysics Data System (ADS)

    Rossetti, Lucas M.; Lima, Evandro F.; Waichel, Breno L.; Scherer, Claiton M.; Barreto, Carla J.

    2014-12-01

    The Paraná-Etendeka Volcanic Province records the volcanism of the Early Cretaceous that precedes the fragmentation of the South-Gondwana supercontinent. Traditionally, investigations of these rocks prioritized the acquisition of geochemical and isotopic data, considering the volcanic stack as a monotonous succession of tabular flows. Torres Syncline is a tectonic structure located in southern Brazil and where the Parana-Etendeka basalts are well preserved. This work provides a detailed analysis of lithofacies and facies architecture, integrated to petrographic and geochemical data. We identified seven distinct lithofacies grouped into four facies associations related to different flow morphologies. The basaltic lava flows in the area can be divided into two contrasting units: Unit I - pahoehoe flow fields; and Unit II - simple rubbly flows. The first unit is build up by innumerous pahoehoe lava flows that cover the sandstones of Botucatu Formation. These flows occur as sheet pahoehoe, compound pahoehoe, and ponded lavas morphologies. Compound lavas are olivine-phyric basalts with intergranular pyroxenes. In ponded lavas and cores of sheet flows coarse plagioclase-phyric basalts are common. The first pahoehoe lavas are more primitive with higher contents of MgO. The emplacement of compound pahoehoe flows is related to low volume eruptions, while sheet lavas were emplaced during sustained eruptions. In contrast, Unit II is formed by thick simple rubbly lavas, characterized by a massive core and a brecciated/rubbly top. Petrographically these flows are characterized by plagioclase-phyric to aphyric basalts with high density of plagioclase crystals in the matrix. Chemically they are more differentiated lavas, and the emplacement is related to sustained high effusion rate eruptions. Both units are low TiO2 and have geochemical characteristics of Gramado magma type. The Torres Syncline main valley has a similar evolution when compared to other Large Igneous Provinces

  20. Lead isotope fingerprints of childhood lead poisoning in Torreón, México

    NASA Astrophysics Data System (ADS)

    Soto-Jimenez, M.; Flegal, R.

    2007-05-01

    A comparison of high-precision lead isotopic ratios in blood and environmental samples was conducted to identify sources of lead contamination in thirty-four (34) children living near a silver-zinc-lead smelter plant at Torreón, Mexico. Sixty-five (65) samples of street and ceiling dust and six of atmospheric deposition to collect smelter emissions from a four (4) km2 grid covering the smelter surrounding residential areas were analyzed for lead concentrations and stable isotopic compositions. Lead concentrations in the study area ranged from 400 to 15,400 g/g and 400 to 14,500 g/g in street and ceiling dust, respectively. These indicated orders of magnitude contamination, based on regional background concentrations ranging from 15 to 35 g/g. Concentrations were greatest closest to smelter and decreased with distance from the smelter, with the highest levels southeast of the smelter corresponding with prevailing the wind direction; and atmospheric lead depositions varied between 130- 1350 g/m2d, again with highest rates within the 1 km perimeter of the smelter. Blood lead (PbB) levels in the children (ages ranges 2-17 years) ranged from 6.9 to 37.7 μg/dL with a mean of 16.3 μg/dl (sd = 8.2 μg/dL). Based on interviews, most of those children have been exposed to lead emissions from the smelter since they were in utero. In all cases, lead isotopic ratios (206Pb/207Pb: 208Pb/207Pb) on dust urban (1.200±0.009: 2.467±0.003), deposited particles (1.200±0.002: 2.466±0.002), and PbB (1.199±0.001: 2.468±0.002) were consistent with those of domestic lead ores processed at the smelter (1.199±0.007: 2.473±0.007). Consequently, both exceptionally elevated PbB concentrations of children living near the smelter and the distinctive isotopic composition of that PbB attest to pollution from the lead smelter in Torreón, México.

  1. Childhood lead poisoning from the smelter in Torreón, México.

    PubMed

    Soto-Jiménez, Martin F; Flegal, Arthur R

    2011-05-01

    Lead concentrations and isotopic compositions in blood samples of 34 children (ages 2-17 years) living within a 113 km(2) area of a silver-zinc-lead smelter plant in Torreón, México were compared to those of associated environmental samples (soil, aerosols, and outdoor and indoor dust) to identify the principal source(s) of environmental and human lead contamination in the area. Lead concentrations of soil and outdoor dust ranged 130-12,050 and 150-14,365 μg g(-1), respectively. Concentrations were greatest near the smelter, with the highest levels corresponding with the prevailing wind direction, and orders of magnitude above background concentrations of 7.3-33.3 μg g(-1). Atmospheric lead depositions in the city varied between 130 and 1350 μg m(-2) d(-1), again with highest rates <1 km from the smelter. Blood lead (PbB) concentrations (11.0±5.3 μg dl(-1)) levels in the children ranged 5.0-25.8 μg dl(-1), which is 3-14 times higher than the current average (1.9 μg dl(-1)) of children (ages 1-5 years) in the US. Lead isotopic ratios ((206)Pb/(207)Pb, (208)Pb/(207)Pb) of the urban dust and soil (1.200±0.009, 2.467±0.003), aerosols (1.200±0.002, 2.466±0.002), and PbB (1.199±0.001, 2.468±0.002) were indistinguishable from each other, as well as those of the lead ores processed at the smelter (1.199±0.007, 2.473±0.007). Consequently, an elevated PbB concentrations of the children in Torreón, as well as in their environment, are still dominated by industrial emissions from the smelter located within the city, in spite of new controls on atmospheric releases from the facility. PMID:21329917

  2. Using Participatory Action Research to Share Knowledge of the Local Environment and Climate Change: Case Study of Erub Island, Torres Strait

    ERIC Educational Resources Information Center

    McNamara, Karen Elizabeth; McNamara, John Patrick

    2011-01-01

    Reading seasons and environments has been a long-held practice for Torres Strait Islanders through their close relationships with their islands and seas. This research project worked with elders on Erub (Darnley) Island, in the eastern group of islands in the Torres Strait, to document and synthesise their knowledge of seasonal patterns and…

  3. High pressure neon arc lamp

    DOEpatents

    Sze, Robert C.; Bigio, Irving J.

    2003-07-15

    A high pressure neon arc lamp and method of using the same for photodynamic therapies is provided. The high pressure neon arc lamp includes a housing that encloses a quantity of neon gas pressurized to about 500 Torr to about 22,000 Torr. At each end of the housing the lamp is connected by electrodes and wires to a pulse generator. The pulse generator generates an initial pulse voltage to breakdown the impedance of the neon gas. Then the pulse generator delivers a current through the neon gas to create an electrical arc that emits light having wavelengths from about 620 nanometers to about 645 nanometers. A method for activating a photosensitizer is provided. Initially, a photosensitizer is administered to a patient and allowed time to be absorbed into target cells. Then the high pressure neon arc lamp is used to illuminate the target cells with red light having wavelengths from about 620 nanometers to about 645 nanometers. The red light activates the photosensitizers to start a chain reaction that may involve oxygen free radicals to destroy the target cells. In this manner, a high pressure neon arc lamp that is inexpensive and efficiently generates red light useful in photodynamic therapy is provided.

  4. Pathological findings in wild harvested dugongs Dugong dugon of central Torres Strait, Australia.

    PubMed

    Woolford, L; Franklin, C; Whap, T; Loban, F; Lanyon, J M

    2015-03-01

    The dugong Dugong dugon is classified as Vulnerable to extinction but may be endangered in some regions. Cause of death in stranded dugongs has not been determined in a large proportion of animals examined, with investigations hindered by limited information on dugong health and diseases, and paucity of knowledge of common or endemic pathological findings. Here we describe pathological findings in harvested dugongs from the relatively pristine area of central Torres Strait, and we characterise lesions attributable to drowning. Other recorded lesions were mild and predominated by host reaction to the presence of trematodes within the gastrointestinal tracts, liver and pancreas. Ascarid worm burdens were low in comparison to dugongs from developed coastlines. Hepatocellular lipofuscin and ferritin pigmentation were commonly observed, more pronounced in livers of older animals and concurrent with periportal and bridging fibrosis. Lesions attributable to drowning included incomplete collapse of lungs, dorsal or diffuse pulmonary congestion, mild intra-alveolar haemorrhage and oedema, mild interstitial oedema and rupture of peripheral alveolar septae with acute myofibre fragmentation and degeneration. No accumulation of foam or aspiration of water or particulate matter was observed, suggesting that dugongs 'dry drown'. Morphometric features of normal spleen are also presented. Characterisation of common pathological findings and those attributable to drowning in this species will aid in the interpretation of post mortem findings for the significant number of dugongs found deceased along urbanised coastlines. PMID:25751852

  5. Mapping and characterisation of the inter-reefal benthic assemblages of the Torres Strait

    NASA Astrophysics Data System (ADS)

    Haywood, M. D. E.; Pitcher, C. R.; Ellis, N.; Wassenberg, T. J.; Smith, G.; Forcey, K.; McLeod, I.; Carter, A.; Strickland, C.; Coles, R.

    2008-09-01

    A comprehensive survey of the benthic assemblages of the Torres Strait was conducted in order to provide critical baseline information for regional marine planning, assessing the environmental sustainability of fisheries and understanding the ecosystems of the region. Over 150 sites throughout the region were sampled with a modified prawn trawl, towed underwater video, pipe dredge and epibenthic sled. This manuscript provides a broad overview of the activities undertaken and data collected. Two thousand three hundred and seventy-two different nominal species were sampled by the trawl and sled, only 728 by both gears. The towed video was not able to provide the same level of taxonomic resolution of epibenthic taxa, but was particularly useful in areas where the seabed was too rough to be sampled. Data from the trawl, sled and video were combined to characterise the epibenthic assemblages of the region. Data from the towed video was also used to provide a characterisation of the inter-reefal benthic habitats, which was then analysed in combination with physical covariate data to examine relationships between the two. Levels of mud and gravel in the sediments, trawling effort and seabed current stress were the covariates most significantly correlated with the nature of the seabed habitats.

  6. Carbonate production of an emergent reef platform, Warraber Island, Torres Strait, Australia

    NASA Astrophysics Data System (ADS)

    Hart, Deirdre E.; Kench, Paul S.

    2007-03-01

    Complex relationships exist between tropical reef ecology, carbonate (CaCO3) production and carbonate sinks. This paper investigated census-based techniques for determining the distribution and carbonate production of reef organisms on an emergent platform in central Torres Strait, Australia, and compared the contemporary budget with geological findings to infer shifts in reef productivity over the late Holocene. Results indicate that contemporary carbonate production varies by several orders of magnitude between and within the different reef-flat sub-environments depending on cover type and extent. Average estimated reef-flat production was 1.66 ± 1.78 kg m-2 year-1 (mean ± SD) although only 23% of the area was covered by carbonate producers. Collectively, these organisms produce 17,399 ± 18,618 t CaCO3 year-1, with production dominated by coral (73%) and subordinate contributions by encrusting coralline algae (18%) articulated coralline algae, molluscs, foraminifera and Halimeda (<4%). Comparisons between the production of these organisms across the different reef-flat zones, surface sediment composition and accumulation rates calculated from cores indicate that it is necessary to understand the spatial distribution, density and production of each major organism when considering the types and amounts of carbonate available for storage in the various reef carbonate sinks. These findings raise questions as to the reliability of using modal production rates in global models independent of ecosystem investigation, in particular, indicating that current models may overestimate reef productivity in emergent settings.

  7. Parotid Sebaceous Carcinoma in Patient with Muir Torre Syndrome, Caused by MSH2 Mutation.

    PubMed

    Neelakantan, Iyer Vishwas; Di Palma, Silvana; Smith, C E T; McCoombe, A

    2016-09-01

    Sebaceous carcinoma of parotid gland are extremely rare with only 29 cases reported so far. The development of parotid sebaceous carcinoma in association with mutation in the mismatch repair gene that causes Muir Torre Syndrome (MTS), a subset of Lynch Syndrome, is still unclear. This study describes such a case and reviews the literature to see if an association between parotid sebaceous carcinoma and multiple visceral malignancies seen in Lynch Syndrome has ever been described. MTS represents a small subset of the Hereditary Non Polyposis Colorectal Carcinoma family, thought to be a subtype of Lynch Syndrome, where patients are prone to develop multiple visceral cancers involving gastrointestinal and genitourinary tract along with sebaceous and non-sebaceous tumours of the skin. MTS is a rare hereditary, autosomal dominant cancer syndrome caused by Microsatellite Instability and defect in DNA mismatch repair protein. The germline mutation involves mostly hMSH2 and hMLH1 genes. In MTS the skin of the head and neck area with the periocular region in particular, is affected but sebaceous carcinomas of the parotid associated with visceral malignancies has not yet been reported in literature. Here we report an index case of sebaceous carcinoma of parotid gland in a patient with MTS. PMID:26577210

  8. Muir-Torre Syndrome Presenting as Sebaceous Adenocarcinoma and Invasive MSH6-Positive Colorectal Adenocarcinoma

    PubMed Central

    Tulpule, Sunil; Ibrahim, Hiyam; Osman, Mohamed; Zafar, Shoaib; Kanta, Romana; Shypula, Gregory; Islam, Mohammed A.; Sen, Shuvendu; Yousif, Abdalla

    2016-01-01

    Muir-Torre syndrome (MTS) is a rare genodermatosis, diagnosed by the presence of sebaceous neoplasms along with an internal malignancy, most commonly colorectal carcinomas. MTS is most commonly caused by microsatellite instabilities of the hMLH1 and hMSH2 mismatch repair genes, and is rarely caused by mutations of the hMSH6 gene. We describe the case of a 56-year-old male who presented with an enlarging mass on his back as well as hematochezia. The back mass was excised, and pathology confirmed microsatellite instability in MSH2 and MSH6. Abdominal CT and colonoscopy confirmed the presence of synchronous masses in the cecum, ascending colon, and the transverse colon. He refused any further workup or treatment, only to return 8 months later complaining of hematochezia and discomfort due to an enlarging mass protruding from the rectum. After consenting to surgical intervention, he agreed to outpatient chemotherapy treatment. The presence of sebaceous neoplasms should raise suspicion for the possibility of an associated internal malignancy. PMID:26933426

  9. Muir-Torre Syndrome Presenting as Sebaceous Adenocarcinoma and Invasive MSH6-Positive Colorectal Adenocarcinoma.

    PubMed

    Tulpule, Sunil; Ibrahim, Hiyam; Osman, Mohamed; Zafar, Shoaib; Kanta, Romana; Shypula, Gregory; Islam, Mohammed A; Sen, Shuvendu; Yousif, Abdalla

    2016-01-01

    Muir-Torre syndrome (MTS) is a rare genodermatosis, diagnosed by the presence of sebaceous neoplasms along with an internal malignancy, most commonly colorectal carcinomas. MTS is most commonly caused by microsatellite instabilities of the hMLH1 and hMSH2 mismatch repair genes, and is rarely caused by mutations of the hMSH6 gene. We describe the case of a 56-year-old male who presented with an enlarging mass on his back as well as hematochezia. The back mass was excised, and pathology confirmed microsatellite instability in MSH2 and MSH6. Abdominal CT and colonoscopy confirmed the presence of synchronous masses in the cecum, ascending colon, and the transverse colon. He refused any further workup or treatment, only to return 8 months later complaining of hematochezia and discomfort due to an enlarging mass protruding from the rectum. After consenting to surgical intervention, he agreed to outpatient chemotherapy treatment. The presence of sebaceous neoplasms should raise suspicion for the possibility of an associated internal malignancy. PMID:26933426

  10. Childhood disability in Aboriginal and Torres Strait Islander peoples: a literature review

    PubMed Central

    2013-01-01

    Introduction Aboriginal and Torres Strait Islander children have higher rates of disability than non-Indigenous children and are considered doubly disadvantaged, yet there is very little data reflecting prevalence and service access to inform design and delivery of services. Failing to address physical, social, and psychological factors can have life-long consequences and perpetuate longstanding health disparities. Methods A narrative literature review was undertaken to identify peer reviewed literature describing factors impacting on the prevention, recognition, and access to support and management of disability in Indigenous Australian children. Results Twenty-seven peer-reviewed journal articles met inclusion criteria. The majority of articles focused on the hearing loss and learning disabilities consequent of otitis media. Few articles reported data on urban or metropolitan Indigenous populations or described interventions. Individual/community-, provider-, and systems level factors were identified as impacting on recognition and management of disability in young Indigenous children. Conclusions Given the burden of childhood disability, the limited literature retrieved is concerning as this is a barometer of activity and investment. Solutions addressing childhood disability will require collaboration between health, social and educational disciplines as well as an increased investment in prevention, identification and promotion of access. PMID:23327694

  11. Simultaneous Muir-Torre and Turcot's syndrome: A case report and review of the literature

    PubMed Central

    Grandhi, Ramesh; Deibert, Christopher P.; Pirris, Stephen M.; Lembersky, Barry; Mintz, Arlan H.

    2013-01-01

    Background: Muir-Torre syndrome (MTS) is an autosomal dominant syndrome characterized by neoplasms of the sebaceous gland or keratoacanthomas, in addition to visceral malignancies. Cerebral neoplasms in patients with hereditary nonpolyposis colorectal cancer (HNPCC) or familial adenomatous polyposis suffer from Turcot's syndrome. Genetic mutations in MutS homolog (MSH)-2, MutL homolog (MLH)-1, and MutS homolog (MSH)-6 DNA mismatch repair genes are the most common in MTS with MSH-2 being the most predominant. In HNPCC MLH-1 and MSH-2 mutations are approximately equal in prevalence. Case Description: We present the case of a 58-year-old male with a prior history of being treated for colonic adenocarcinoma and skin lesions leading to a diagnosis of MTS. The patient later developed a World Health Organization (WHO) grade 4 glioma requiring surgical resection. Pathology revealed mutations in MSH-2 and MSH-6 mismatch repair genes. Conclusions: This case represents the first report of Turcot's and MTS with extensive molecular testing on the cerebral neoplasm demonstrating a molecular relationship between Turcot's and MTS and only the second published report of simultaneous Turcot's and MTS. PMID:23646262

  12. Evaluating ecosystem-based management options: Effects of trawling in Torres Strait, Australia

    NASA Astrophysics Data System (ADS)

    Ellis, Nick; Pantus, Francis; Welna, Andrzej; Butler, Alan

    2008-09-01

    A suite of management options for a prawn trawl fishery in Torres Strait, Australia was assessed for impacts on the benthic fauna using a dynamic management strategy evaluation approach. The specification of the management options was gained through consultation with stakeholders. Data for the model was drawn from several sources: the fleet data from fishery logbooks and satellite vessel monitoring systems, benthic depletion rates from trawl-down experiments, benthic recovery rates from post-experiment recovery monitoring studies, and benthic distribution from large-scale benthic surveys. Although there were large uncertainties in the resulting indicators, robust measures relevant to management were obtained by taking ratios relative to the status quo. The management control with the biggest effect was total effort; reducing trawl effort always led to increases in benthic faunal density of up to 10%. Spatial closures had a smaller benefit of up to 2%. The effect of closing a set of buffer zones around reefs to trawling was indistinguishable from the status quo option. Closing a larger area, however, was largely beneficial especially for sea cucumbers. When the spatial distributions of fauna prior to fishing were accounted for, fauna with distributions positively correlated with effort improved relative to those negatively correlated. The reduction in prawn catch under effort reduction scenarios could be ameliorated by introducing temporal closures over the full-moon period.

  13. The effect of skin temperature on performance during a 7.5-km cycling time trial.

    PubMed

    Levels, Koen; de Koning, Jos J; Foster, Carl; Daanen, Hein A M

    2012-09-01

    Aerobic exercise performance is seriously compromised in the heat. Possibly, a high skin temperature causes a rating of perceived exertion (RPE)-mediated decrease in exercise intensity. The purpose of this study was to determine the effect of skin temperature on power output during a 7.5-km cycling time trial. Thirteen well-trained male subjects performed a 7.5-km cycling time trial at 15°C and 50% relative humidity (CONTROL), with radiative heat stress during the time trial, and with (PRECOOL) or without (HEAT) precooling. Heat stress was applied by infrared heaters positioned in front of the cycle ergometer between 1.5 and 6.0 km. Skin, rectal, and pill temperature, power output, heart rate, and RPE were measured during the trial. Despite the lower mean skin temperature at the start of the time trial for PRECOOL compared to HEAT (-2.1 ± 0.7°C; P < 0.01) and CONTROL (-1.8 ± 0.6°C; P < 0.05), and a greater increase in mean skin temperature during the heat stress period for PRECOOL (4.5 ± 1.0°C) and HEAT (3.9 ± 0.8°C) than for CONTROL (-0.3 ± 0.6°C; P < 0.01), no differences in power output were found between HEAT (273 ± 45 W) and CONTROL (284 ± 43 W; P = 0.11) and between HEAT and PRECOOL (266 ± 50 W; P = 0.47). Power output during the time trial was greater for CONTROL than for PRECOOL (P < 0.05). Additionally, no differences were observed in core temperature measures, HR, and RPE. Skin temperature does not affect the selection and modulation of exercise intensity in a 7.5-km cycling time trial. PMID:22270485

  14. Growth of MoO3 nanostructured thin films as a function of O2-partial pressure

    NASA Astrophysics Data System (ADS)

    Sharma, Rabindar Kumar; Kumar, Prabhat; Reddy, G. B.

    2015-06-01

    In this report, we synthesized molybdenum trioxide (α-MoO3) nanostructured thin films (NSTs) with nanoflakes (NFs) on the Ni-coated glass substrates employing plasma assisted sublimation process (PASP) as a function of oxygen partial pressure (PO2). The effect of oxygen partial pressure on structural, morphological, and vibrational properties have been investigated systematically. The structural analysis divulged that all films deposited at different PO2 have pure orthorhombic phase, no impurity phase is detected under the limit of resolution. The morphological studies of samples is carried out by SEM, revealed that features as well as alignment of MoO3 NSTs can be monitored by PO2 and the sample having best features is obtained at 7.5×10-2 Torr. In addition, the more insight information is accomplished by TEM/HRTEM on the best featured sample, which confirmed the single crystalline nature of nanoflakes. The vibrational study of all samples are performed by FTIR, and strongly supports the XRD observations. All the results are in consonance with each other.

  15. Ligubenzocycloheptanone A, a Novel Tricyclic Butenolide with a 6/7/5 Skeleton from Ligusticum chuanxiong

    PubMed Central

    Han, Bing; Zhang, Xu; Feng, Zi-Ming; Jiang, Jian-Shuang; Li, Li; Yang, Ya-Nan; Zhang, Pei-Cheng

    2016-01-01

    Ligubenzocycloheptanone A (1), a novel tricyclic butenolide with a 6/7/5-membered ring skeleton, was isolated from the rhizome of Ligusticum chuanxiong. Its unusual structure was determined using UV, IR, HRESIMS, 1D and 2D NMR data, X-ray diffraction crystallography and by the comparison of experimental and calculated electronic circular dichroism (ECD) spectra. 1 possessed a benzocycloheptanone core featuring butyrolactone, which is rarely observed in nature. A possible biosynthetic pathway was proposed. Ligubenzocycloheptanone A showed strong radical scavenging activity with an IC50 value of 2.3 μM. PMID:27461841

  16. Ligubenzocycloheptanone A, a Novel Tricyclic Butenolide with a 6/7/5 Skeleton from Ligusticum chuanxiong

    NASA Astrophysics Data System (ADS)

    Han, Bing; Zhang, Xu; Feng, Zi-Ming; Jiang, Jian-Shuang; Li, Li; Yang, Ya-Nan; Zhang, Pei-Cheng

    2016-07-01

    Ligubenzocycloheptanone A (1), a novel tricyclic butenolide with a 6/7/5-membered ring skeleton, was isolated from the rhizome of Ligusticum chuanxiong. Its unusual structure was determined using UV, IR, HRESIMS, 1D and 2D NMR data, X-ray diffraction crystallography and by the comparison of experimental and calculated electronic circular dichroism (ECD) spectra. 1 possessed a benzocycloheptanone core featuring butyrolactone, which is rarely observed in nature. A possible biosynthetic pathway was proposed. Ligubenzocycloheptanone A showed strong radical scavenging activity with an IC50 value of 2.3 μM.

  17. Geology of the Southeast Durham and Southwest Durham 7. 5-minute Quadrangles, North Carolina

    SciTech Connect

    Hoffman, C.W.; Gallagher, P.E.

    1989-01-01

    The Southeast Durham and Southwest Durham 7.5-minute Quadrangles include a 26 kilometer transect of the Durham Triassic basin from the Jonesboro fault on the southeastern side of this half-graben structure to a bounding unconformity on the northwestern side. The basin is filled with non-marine, primarily fluvial, clastic deposits of the Late Triassic Chatham Group. The Chatham Group rocks are intruded by Early Jurassic diabase as dikes and sheets. Bordering rocks are pre-Mesozoic intrusive, metavolcanic and metasedimentary rocks of the Carolina slate belt. This paper discusses the geology of the Southeast Durham and Southwest Durham Quadrangles. 37 refs., 17 figs.

  18. Viral Load Analysis of Hepatitis C Virus in Huh7.5 Cell Culture System

    PubMed Central

    Teimourpour, Roghayeh; Meshkat, Zahra; Gholoubi, Aida; Nomani, Hosein; Rostami, Sina

    2015-01-01

    Background: Previous studies using cell culture systems for the replication of hepatitis C virus have opened new research dimensions, and paved the ways for further and detailed studies of the virus in vitro. Objectives: The purpose of the present study was to cultivate hepatitis C virus in a cell culture system and evaluate viral amplification. Materials and Methods: In order to propagate hepatitis C virus, cloned whole genome of virus, JFH-1, was used. JFH-1 cDNA was introduced into strain JM109 of Escherichia coli and plasmid, containing the viral genome was purified from transformed bacteria. After XbaI digestion, RNA synthesis was induced using T7 RNA polymerase enzyme. Next, eukaryotic cell line Huh 7.5 was transfected by the purified RNA. Finally, Huh-7.5 cell line was infected with replicated virus and viral load was determined using real-time PCR (Polymerase Chain Reaction). Results: The amount of viral load, which was measured using real-time PCR was 17592 IU/mL. Conclusions: In the present study, using cell culture, a high titer (in acceptable range) of infectious hepatitis C virus was produced. This method could be used in future studies. PMID:26290686

  19. A 7.5 ps single-shot precision integrated time counter with segmented delay line

    NASA Astrophysics Data System (ADS)

    Klepacki, K.; Szplet, R.; Pelka, R.

    2014-03-01

    This paper describes the design and test results of time interval counter featuring the single-shot precision of 7.5 ps root mean square (rms) and measurement range of 1 ms. These parameters have been achieved by combining direct counting method with a two-stage interpolation within a single clock period. Both stages of interpolation are based on the use of tapped delay lines stabilized by delay locked loop mechanism. In the first stage, a coarse resolution is obtained with the aid of high frequency multiphase clock, while in the second stage a sub-gate delay resolution is achieved with the use of differential delay line. To reduce the nonlinearities of conversion and to improve the precision of measurement, a novel segmented delay line is proposed. An important feature of this segmented delay line is partial overlapping of measurement range and resulting enhancement of both resolution and precision of time interval counter. The maximum integral nonlinearity error of the fine-stage interpolators does not exceed 16 ps and 14 ps in START and STOP interpolators, respectively. These errors have been identified by statistical calibration procedure and corrected to achieve single-shot precision better than 7.5 ps (rms). The time counter is integrated in a single ASIC (Application Specific Integrated Circuit) chip using a standard cost-effective 0.35 μm CMOS (Complementary Metal Oxide Semiconductor) process.

  20. Ozone formation in pulsed SDBD in a wide pressure range

    NASA Astrophysics Data System (ADS)

    Starikovskiy, Andrey; Nudnova, Maryia; mipt Team

    2011-10-01

    Ozone concentration in surface anode-directed DBD for wide pressure range (150 - 1300 torr) was experimentally measured. Voltage and pressure effect were investigated. Reduced electric field was measured for anode-directed and cathode-directed SDBD. E/n values in cathode-directed SDBD is higher than in cathode-directed on 50 percent at atmospheric pressure. E/n value increase leads to decrease the rate of oxygen dissociation and Ozone formation at lower pressures. Radiating region thickness of sliding discharge was measured. Typical thickness of radiating zone is 0.4-1.0 mm within pressure range 220-740 torr. It was shown that high-voltage pulsed nanosecond discharge due to high E/n value produces less Ozone with compare to other discharges. Kinetic model was proposed to describe Ozone formation in the pulsed nanosecond SDBD.

  1. Making tuba in the Torres Strait Islands: the cultural diffusion and geographic mobility of an alcoholic drink.

    PubMed

    Brady, Maggie; McGrath, Vic

    2010-01-01

    There is relatively scant evidence of the Indigenous production and consumption of intoxicating drinks on the Australian mainland prior to the arrival of outsiders. Although Australian Aboriginal peoples had mastered fermentation in some regions, the Indigenous manufacture of much stronger drinks by distillation was unknown on the Australian mainland. However, following contact with Pacific Island and Southeast Asian peoples in the 19th century, Islanders in the Torres Strait adopted techniques for fermenting and distilling what became a quasi-indigenous alcoholic drink known as tuba. This paper discusses the historical process of the diffusion of this substance as a result of labour migration and internationalisation in the Strait, and provides present-day accounts of tuba production from Torres Strait Islanders. PMID:21280393

  2. La meridiana di Egnazio Danti nella Torre dei Venti in Vaticano: un'icona della riforma Gregoriana del calendario

    NASA Astrophysics Data System (ADS)

    Sigismondi, Costantino

    2014-05-01

    La Torre dei Venti domina l’angolo Sud Ovest del cortile della Pigna (nell'area dei Musei Vaticani), ed è inclusa negli ambienti dell'Archivio Segreto Vaticano. Non è aperta al pubblico, ma è universalmente nota per la fama che da oltre quattrocento anni la circonda, legata alle vicende della riforma Gregoriana del calendario. La meridiana tracciata da padre Egnazio Danti (1536-1586) nella torre dei Venti, fu visitata anche da Gregorio XIII, probabilmente il 21 marzo 1581 come suppone il padre Stein, per convincersi dell'anticipo ormai arrivato a dieci giorni dell'equinozio di primavera sulla data che il concilio di Nicea aveva fissato al 21 marzo per il computo pasquale. La ricognizione astrometrica del febbraio-marzo 2009 fatta dall'autore viene qui presentata.

  3. A Review of Programs That Targeted Environmental Determinants of Aboriginal and Torres Strait Islander Health

    PubMed Central

    Johnston, Leah; Doyle, Joyce; Morgan, Bec; Atkinson-Briggs, Sharon; Firebrace, Bradley; Marika, Mayatili; Reilly, Rachel; Cargo, Margaret; Riley, Therese; Rowley, Kevin

    2013-01-01

    Objective: Effective interventions to improve population and individual health require environmental change as well as strategies that target individual behaviours and clinical factors. This is the basis of implementing an ecological approach to health programs and health promotion. For Aboriginal People and Torres Strait Islanders, colonisation has made the physical and social environment particularly detrimental for health. Methods and Results: We conducted a literature review to identify Aboriginal health interventions that targeted environmental determinants of health, identifying 21 different health programs. Program activities that targeted environmental determinants of health included: Caring for Country; changes to food supply and/or policy; infrastructure for physical activity; housing construction and maintenance; anti-smoking policies; increased workforce capacity; continuous quality improvement of clinical systems; petrol substitution; and income management. Targets were categorised according to Miller’s Living Systems Theory. Researchers using an Indigenous community based perspective more often identified interpersonal and community-level targets than were identified using a Western academic perspective. Conclusions: Although there are relatively few papers describing interventions that target environmental determinants of health, many of these addressed such determinants at multiple levels, consistent to some degree with an ecological approach. Interpretation of program targets sometimes differed between academic and community-based perspectives, and was limited by the type of data reported in the journal articles, highlighting the need for local Indigenous knowledge for accurate program evaluation. Implications: While an ecological approach to Indigenous health is increasingly evident in the health research literature, the design and evaluation of such programs requires a wide breadth of expertise, including local Indigenous knowledge. PMID

  4. Indolizidine, Antiinfective and Antiparasitic Compounds from Prosopis glandulosa Torr. Var. glandulosa

    PubMed Central

    Samoylenko, Volodymyr; Ashfaq, Mohammad K.; Jacob, Melissa R.; Tekwani, Babu L.; Khan, Shabana I.; Manly, Susan P.; Joshi, Vaishali C.; Walker, Larry A.; Muhammad, Ilias

    2013-01-01

    A new potent antiinfective and antiparasitic 2,3-dihydro-1H-indolizinium chloride, (1), was isolated from Prosopis glandulosa Torr. var. glandulosa. Three additional new (2–4) and one known (5), indolizidines were also isolated, and the dihydrochloride salts of 1–3 (compounds 6, 7 and 8) were prepared. Structures were determined by 1D and 2D NMR and mass spectra. Compound 1 showed potent in vitro antifungal activity against Cryptococcus neoformans and Aspergillus fumigatus (IC50 values = 0.4 and 3.0 μg/mL, respectively), and antibacterial activity against methicillin-resistant Staphylococcus aureus and Mycobacterium intracellulare (IC50 values of 0.35 and 0.9 μg/mL, respectively). The remarkable in vitro fungicidal activity of 1–4 against C. neoformans (MFCs = 0.63→1.25 μg/mL) and 2, 3, and 5 against A. fumigatus (MFCs = 0.63→2.5 μg/mL) were similar to amphotericin B, but >2–4-fold more potent than 6–8. Prosopilosidine (1) showed potent in vivo activity at 0.0625 mg/Kg/day/ip for 5 days in a murine model of cryptococcosis by eliminating ~76% of C. neoformans infection from brain tissue compared to ~83% with amphotericin B at 1.5 mg/Kg/day. Compounds 1 and 4 exhibited potent activity and high selectivity index (SI) values against chloroquine sensitive (D6) and chloroquine resistant (W2) strains of Plasmodium falciparum with IC50 values of 39 and 95 ng/mL, and 42 and 120 ng/mL, respectively; (chloroquine, IC50 = 17 and 140 ng/mL). Prosopilosine (1) also showed in vivo antimalarial activity with an ED50 value of ~2 mg/Kg/day/ip against Plasmodium berghei-infected mice after 3 days of treatment. PMID:19105653

  5. The origin of oriented lakes in the Andean foreland, Parque Nacional Torres del Paine (Chilean Patagonia)

    NASA Astrophysics Data System (ADS)

    Gonzales, Joseph; Aydin, Atilla

    2008-05-01

    The Parque Nacional Torres Del Paine and surrounding area in the Magallanes foreland basin in Chilean Patagonia is the site for numerous lakes fed by glaciers and rivers in the Andean highlands to the west. The lakes are elongate and have conspicuously systematic orientations. We hypothesize that the origin of the oriented lakes lies in the fault system, composed of a right-lateral strike-slip fault set oriented 58° from north, a left-lateral strike-slip set oriented 87°, and a thrust fault set oriented 167°, that exists within the underlying rocks. To test this hypothesis quantitatively, we determined the shape and orientation of the lakes by fitting each lake with an ellipse of appropriate aspect ratio, and later with multiple ellipses consistent with the composite geometry of some lakes. We then examined the faults in the area in terms of their kinematics, orientation and distribution. The distribution of lake orientations showed three distinct groups which appear to correspond to the three main fault groups. For lakes fitted with multiple ellipses, the difference in means between the right-lateral, left-lateral, and thrust faults and their corresponding groups of lakes are 3.05°, 1.57°, and 5.17°. Using a Kolmogorov-Smirnov (K-S) statistical test to compare the orientations of faults with respect to the lakes suggests that there is not a strongly significant difference between the fault orientations and the corresponding lake groups. These results indicate that the faults have a profound control on the orientation, shape, and distribution of the lakes. We attribute this to faults and their damage zones being weaker and therefore prone to a faster rate of erosion, and to stress perturbations associated with discontinuous faults resulting in localized high density fracturing and surface subsidence. These results have implications for lake and drainage system morphologies in other foreland basins along the Andes and other similar settings.

  6. High Resolution and Large Dynamic Range Resonant Pressure Sensor Based on Q-Factor Measurement

    NASA Technical Reports Server (NTRS)

    Gutierrez, Roman C. (Inventor); Stell, Christopher B. (Inventor); Tang, Tony K. (Inventor); Vorperian, Vatche (Inventor); Wilcox, Jaroslava (Inventor); Shcheglov, Kirill (Inventor); Kaiser, William J. (Inventor)

    2000-01-01

    A pressure sensor has a high degree of accuracy over a wide range of pressures. Using a pressure sensor relying upon resonant oscillations to determine pressure, a driving circuit drives such a pressure sensor at resonance and tracks resonant frequency and amplitude shifts with changes in pressure. Pressure changes affect the Q-factor of the resonating portion of the pressure sensor. Such Q-factor changes are detected by the driving/sensing circuit which in turn tracks the changes in resonant frequency to maintain the pressure sensor at resonance. Changes in the Q-factor are reflected in changes of amplitude of the resonating pressure sensor. In response, upon sensing the changes in the amplitude, the driving circuit changes the force or strength of the electrostatic driving signal to maintain the resonator at constant amplitude. The amplitude of the driving signals become a direct measure of the changes in pressure as the operating characteristics of the resonator give rise to a linear response curve for the amplitude of the driving signal. Pressure change resolution is on the order of 10(exp -6) torr over a range spanning from 7,600 torr to 10(exp -6) torr. No temperature compensation for the pressure sensor of the present invention is foreseen. Power requirements for the pressure sensor are generally minimal due to the low-loss mechanical design of the resonating pressure sensor and the simple control electronics.

  7. Bedform facies in western Torres Strait and the influence of hydrodynamics, coastal geometry, and sediment supply on their distribution

    NASA Astrophysics Data System (ADS)

    Daniell, James J.

    2015-04-01

    This study uses outputs from hydrodynamic and bedload transport models combined with satellite imagery, aerial photography, and bathymetric data to understand the distributions and mechanisms maintaining six spatially extensive bedform facies in western Torres Strait. Changes in bedform morphology occur along north-south variations in coastal geometry and east-west variations in hydrodynamic regime. Numerous islands create an environment that favours the formation of banner banks in the south, while other sandbank morphologies occur on an extensive and comparatively 'flat' basement to the north. The western side of Torres Strait experiences net bedload transport that is directed to the west throughout the year and favours the formation of bedforms that prefer unidirectional bedload transport regimes (i.e. barchan-shaped sandbanks and sand ribbons). The eastern side of the strait experiences seasonal changes in the direction of net bedload transport and maintains 'S' and 'V' shaped sandbanks. Sediment availability also influences the bedform facies. Western Torres Strait experiences net westward bedload transport through the Strait. However, sandbanks (indicating high sediment availability) are found in the central shallow and high current velocity areas, while sand ribbons (indicating low sediment availability) are a distal facies on the western side of the Strait. This sequence of bedforms indicates that sediments are preferentially trapped within the central portion of the Strait and not transported further west into the Gulf of Carpentaria.

  8. Outcome of live donor liver transplantation in Indian children with bodyweight <7.5 kg.

    PubMed

    Kaur, Satvinder; Wadhwa, Nishant; Sibal, Anupam; Jerath, Nameet; Sasturkar, Shridhar

    2011-01-01

    This case-series analyzed the outcome of live donor liver transplantation (LT) performed in children <7.5 kg from January 2008 to June 2009 at our center. Five patients (3 males, 2 females, mean age, 8.2 ± .4 months; mean weight 6.8 ± 0.4 kg) underwent LT. The indications of LT included biliary atresia (3) and idiopathic neonatal hepatitis (2). Postoperative complications included acute rejection (1), portal venous thrombosis (1), bile leak (1), severe hypertension (1) and bacterial sepsis (4). There were no donor related complications. The median follow-up duration is 11 months with patient and graft survival rates of 100% each, respectively. PMID:20972305

  9. Postoperative blunt trauma to 7.5 mm scleral pocket wounds.

    PubMed

    Stevens, J D; Claoué, C M; Steele, A D

    1994-05-01

    Two patients received blunt trauma to the operated eye after phacoemulsification cataract surgery. Both patients had a three-step 7.5 mm chord width, 3.0 mm long, curving incision, extending from sclera into clear cornea. One patient had rupture of the scleral tunnel and horizontal suture 20 days after surgery. The intraocular lens was dislocated into and along the scleral tunnel. The second patient had direct trauma four days after surgery, resulting in cheese-wiring of the horizontal nylon 10-0 suture and wound leakage but no other sequelae. Blunt trauma after scleral pocket phacoemulsification cataract surgery may result in clinical wound dehiscence if sufficient force is sustained. PMID:8064613

  10. Geologic map of the Morena Reservoir 7.5-minute quadrangle, San Diego County, California

    USGS Publications Warehouse

    Todd, Victoria R.

    2016-01-01

    IntroductionMapping in the Morena Reservoir 7.5-minute quadrangle began in 1980, when the Hauser Wilderness Area, which straddles the Morena Reservoir and Barrett Lake quadrangles, was mapped for the U.S. Forest Service. Mapping was completed in 1993–1994. The Morena Reservoir quadrangle contains part of a regional-scale Late Jurassic(?) to Early Cretaceous tectonic suture that coincides with the western limit of Jurassic metagranites in this part of the Peninsular Ranges batholith (PRB). This suture, and a nearly coincident map unit consisting of metamorphosed Cretaceous and Jurassic back-arc basinal volcanic and sedimentary rocks (unit KJvs), mark the boundary between western, predominantly metavolcanic rocks, and eastern, mainly metasedimentary, rocks. The suture is intruded and truncated by the western margin of middle to Late Cretaceous Granite Mountain and La Posta plutons of the eastern zone of the batholith.

  11. A 7.5 MHz Dual-Layer Transducer Array for 3-D Rectilinear Imaging

    PubMed Central

    Chen, Yuling; Nguyen, Man; Yen, Jesse T.

    2011-01-01

    The difficulties associated with fabrication and interconnection have limited the development of 2-D ultrasound transducer arrays with a large number of elements (>5000). In previous work, we described a 5 MHz center frequency PZT-P[VDF-TrFE] dual-layer transducer, which used 2 perpendicular 1-D arrays for 3-D rectilinear imaging. This design substantially reduces the channel count as well as fabrication complexity, which makes 3-D imaging more realizable. Higher frequencies (>5MHz) are more commonly used in clinical for imaging targets near transducers such as the breast, carotid, and musculoskeletal. In this paper, we present a 7.5 MHz dual-layer transducer array for 3-D rectilinear imaging. A modified acoustic stack model was designed and fabricated. PZT elements were sub-diced to eliminate lateral coupling. This sub-dicing process made the PZT into a 2–2 composite material, which could help improve transducer sensitivity and bandwidth. Full synthetic aperture 3-D data sets were acquired by interfacing the transducer with a Verasonics data acquisition system (VDAS). Offline 3-D beamforming was then performed to obtain volumes of a multi-wire phantom and a cyst phantom. The generalized coherence factor (GCF) was applied to improve the contrast of cyst images. The measured −6 dB fractional bandwidth of the transducer was 71% with a center frequency of 7.5 MHz. The measured lateral beamwidths were 0.521 mm and 0.482 mm in azimuth and elevation respectively, compared with a simulated beamwidth of 0.43 mm. PMID:21842584

  12. Geologic and Geophysical Framework of the Santa Rosa 7.5' Quadrangle, Sonoma County, California

    USGS Publications Warehouse

    McLaughlin, R.J.; Langenheim, V.E.; Sarna-Wojcicki, A. M.; Fleck, R.J.; McPhee, D.K.; Roberts, C.W.; McCabe, C.A.; Wan, Elmira

    2008-01-01

    The geologic and geophysical maps of Santa Rosa 7.5? quadrangle and accompanying structure sections portray the sedimentary and volcanic stratigraphy and crustal structure of the Santa Rosa 7.5? quadrangle and provide a context for interpreting the evolution of volcanism and active faulting in this region. The quadrangle is located in the California Coast Ranges north of San Francisco Bay and is traversed by the active Rodgers Creek, Healdsburg and Maacama Fault Zones. The geologic and geophysical data presented in this report, are substantial improvements over previous geologic and geophysical maps of the Santa Rosa area, allowing us to address important geologic issues. First, the geologic mapping is integrated with gravity and magnetic data, allowing us to depict the thicknesses of Cenozoic deposits, the depth and configuration of the Mesozoic basement surface, and the geometry of fault structures beneath this region to depths of several kilometers. This information has important implications for constraining the geometries of major active faults and for understanding and predicting the distribution and intensity of damage from ground shaking during earthquakes. Secondly, the geologic map and the accompanying description of the area describe in detail the distribution, geometry and complexity of faulting associated with the Rodgers Creek, Healdsburg and Bennett Valley Fault Zones and associated faults in the Santa Rosa quadrangle. The timing of fault movements is constrained by new 40Ar/39Ar ages and tephrochronologic correlations. These new data provide a better understanding of the stratigraphy of the extensive sedimentary and volcanic cover in the area and, in particular, clarify the formational affinities of Pliocene and Pleistocene nonmarine sedimentary units in the map area. Thirdly, the geophysics, particularly gravity data, indicate the locations of thick sections of sedimentary and volcanic fill within ground water basins of the Santa Rosa plain and

  13. 7.5 MHz dual-layer transducer array for 3-D rectilinear imaging.

    PubMed

    Chen, Yuling; Nguyen, Man; Yen, Jesse T

    2011-07-01

    The difficulties associated with fabrication and interconnection have limited the development of 2-D ultrasound transducer arrays with a large number ofelements (>5000). In previous work, we described a 5 MHz center frequency PZT-P[VDF-TrFE] dual-layer transducer that used two perpendicular 1-D arrays for 3-D rectilinear imaging. This design substantially reduces the channel count as well as fabrication complexity, which makes 3-D imaging more realizable. Higher frequencies (>5 MHz) are more commonly used in clinical applications or imaging targets near transducers, such as the breast, carotid and musculoskeletal tissue. In this paper, we present a 7.5 MHz dual-layer transducer array for 3-D rectilinear imaging. A modified acoustic stack model was designed and fabricated. PZT elements were sub-diced to eliminate lateral coupling. This sub-dicing process made the PZT into a 2-2 composite material, which could help improve transducer sensitivity and bandwidth. Full synthetic-aperture 3-D data sets were acquired by interfacing the transducer with a Verasonics data-acquisition system (VDAS). Offline 3-D beamforming was then performed to obtain volumes of a multiwire phantom and a cyst phantom. The generalized coherence factor (GCF) was applied to improve the contrast of cyst images. The measured -6 dB fractional bandwidth of the transducer was 71% with a center frequency of 7.5 MHz. The measured lateral beamwidths were 0.521 mm and 0.482 mm in azimuth and elevation, respectively, compared with a simulated beamwidth of 0.43 mm. PMID:21842584

  14. Global model for high pressure electronegative radio-frequency discharges

    SciTech Connect

    Lee, Y.T.; Lieberman, M.A.; Lichtenberg, A.J.; Bose, F.; Baltes, H.; Patrick, R.

    1997-01-01

    We develop a global model for high pressure (0.1{endash}1 Torr) electronegative rf discharges and apply it to model a capacitively driven plasma etcher. The molecular gases considered consist of either pure chlorine species or a mixture of chlorine and helium species. The charged and neutral heavy particle densities together with the electron density and electron temperature are calculated by using the equations of particle balance and power balance for the input discharge parameters rf power or rf current, inlet pressure, gas flow rates, reactor diameter, and gap spacing. The power is deposited in the electrons via ohmic heating and in those ions accelerated across the dc sheath potential. The voltage across the sheath is calculated self-consistently with the densities and the electron temperature by using a collisional Child law sheath model. Analytic scaling laws for the dependence of charged and neutral particle densities, electron temperature, rf voltage and current, sheath width, and plasma impedance on pressure and absorbed rf power are presented and used to explain the numerical results obtained from the global model. The model results are compared to recent experimental measurements in a chlorine discharge over a range of absorbed power P{sub abs}=20{endash}180W at an inlet pressure p{sub in}=0.4 Torr and a range of pressure 0.1{endash}1.6 Torr with a fixed input power of 100 W. We obtain reasonable agreement for P{sub abs}{lt}200W and for 0.2 Torr{lt}p{sub in}{lt}1Torr. {copyright} {ital 1997 American Vacuum Society.}

  15. Implementing computerised Aboriginal and Torres Strait Islander health checks in primary care for clinical care and research: a process evaluation

    PubMed Central

    2013-01-01

    Background Paper-based Aboriginal and Torres Strait Islander health checks have promoted a preventive approach to primary care and provided data to support research at the Inala Indigenous Health Service, south-west Brisbane, Australia. Concerns about the limitations of paper-based health checks prompted us to change to a computerised system to realise potential benefits for clinical services and research capability. We describe the rationale, implementation and anticipated benefits of computerised Aboriginal and Torres Strait Islander health checks in one primary health care setting. Methods In May 2010, the Inala Indigenous Health Service commenced a project to computerise Aboriginal and Torres Strait Islander child, adult, diabetic, and antenatal health checks. The computerised health checks were launched in September 2010 and then evaluated for staff satisfaction, research consent rate and uptake. Ethical approval for health check data to be used for research purposes was granted in December 2010. Results Three months after the September 2010 launch date, all but two health checks (378 out of 380, 99.5%) had been completed using the computerised system. Staff gave the system a median mark of 8 out of 10 (range 5-9), where 10 represented the highest level of overall satisfaction. By September 2011, 1099 child and adult health checks, 138 annual diabetic checks and 52 of the newly introduced antenatal checks had been completed. These numbers of computerised health checks are greater than for the previous year (2010) of paper-based health checks with a risk difference of 0.07 (95% confidence interval 0.05, 0.10). Additionally, two research projects based on computerised health check data were underway. Conclusions The Inala Indigenous Health Service has demonstrated that moving from paper-based Aboriginal and Torres Strait Islander health checks to a system using computerised health checks is feasible and can facilitate research. We expect computerised health

  16. Fitting Vibrational Energy Parameters to Falloff Experiments: CH3 + CH3 + He (0.6-2 Torr 200-298 K)

    NASA Technical Reports Server (NTRS)

    Tardy, Dwight C.; Cody, Regina J.; Payne, Walter A.; Thorn, R. Peyton; Nesbitt, Fred L.; Iannone, Mark A.; Stief, Louis J.; Vondrak, Richard R. (Technical Monitor)

    2001-01-01

    There are many reported experiments and theoretical calculations for the combination of methyl free radicals diluted in a non-reactive 'deactivator. At high pressure the ethane (C2H6) combination product is the sole product; with decreasing pressure the chemically activated C2H6 will decompose. The falloff in the observed rate coefficient is the result of the competition between collisional stabilization of the chemically activated CA and unimolecular decomposition. The dependence of the rate coefficient on pressure, temperature and collision properties is complex and can not be calculated from first principles. The understanding of this system is not only of fundamental importance but is relevant to the recent detection of methyl free radicals in the atmospheres of Saturn - and Neptune. The temperatures of these outer planet atmospheres are in the 140-200 K region with total pressures (predominately H2 and He) less than 0.2 Torr. Experimentally determined rate coefficients have been reported for this reaction at T = 296-906 K and T = 200-408 K mostly with argon as the deactivator. At T = 200 K only the high pressure rate coefficient has been determined. Complete falloff curves over a wide temperature range (200-1600 K) with a variety of weak collider models used to simulate argon as the deactivator have also been reported by Klippenstein and Harding (KH). More recently we have reported the experimental rate coefficients in the falloff region with helium as the deactivator at 200 and 298 K. In this paper we have used the calculated falloff curves reported by KH for argon to determine the average energy transferred per collision for helium in our recently reported experiments. Collision rates were converted using Lennard Jones parameters; the temperature dependence of this conversion factor is noted. The helium experiments were consistent with a down of approximately 100 cm (exp-1); the temperature dependence was slight. The magnitude of down and

  17. Method of gettering hydrogen under conditions of low pressure

    DOEpatents

    Mendelsohn, M.H.; Gruen, D.M.

    1983-08-09

    A ternary intermetallic compound having the formula Zr(V[sub 1[minus]x]Cr[sub x])[sub 2] where x is in the range of 0.01 to 0.90 is capable of reversibly sorbing hydrogen at temperatures ranging from room temperature to 200 C, at pressures down to 10[sup [minus]6] Torr. The compound is suitable for use as a hydrogen getter in low pressure, high temperature applications such as magnetic confinement fusion devices. 3 figs.

  18. Method of gettering hydrogen under conditions of low pressure

    DOEpatents

    Mendelsohn, Marshall H.; Gruen, Dieter M.

    1983-01-01

    A ternary intermetallic compound having the formula Zr(V.sub.1-x Cr.sub.x).sub.2 where x is in the range of 0.01 to 0.90 is capable of reversibly sorbing hydrogen at temperatures ranging from room temperature to 200.degree. C., at pressures down to 10.sup.-6 Torr. The compound is suitable for use as a hydrogen getter in low pressure, high temperature applications such as magnetic confinement fusion devices.

  19. Surface modification of a Ti-7.5Mo alloy using NaOH treatment and Bioglass coating.

    PubMed

    Ho, Wen-Fu; Lai, Chien-Hung; Hsu, Hsueh-Chuan; Wu, Shih-Ching

    2010-05-01

    The objective of this study was to propose a surface modification for a low-modulus Ti-7.5Mo alloy to initiate the formation of hydroxyapatite (HA) during in vitro bioactivity tests in simulated body fluid (SBF). Specimens of commercially pure titanium (c.p. Ti) and Ti-7.5Mo were initially immersed in a 15 M NaOH solution at 60 degrees C for 24 h, resulting in the formation of a porous network structure composed of sodium titanate (Na(2)Ti(5)O(11)). Afterwards, bioactive Bioglass particles were deposited on the surface of NaOH-treated c.p. Ti and Ti-7.5Mo. The specimens were then immersed in SBF at 37 degrees C for 1, 7 and 28 days, respectively. The apatite-forming ability of the NaOH-treated and Bioglass-coated Ti-7.5Mo was higher than that of the c.p. Ti under the same condition. The X-ray diffraction (XRD) and energy-dispersive X-ray spectroscopy (EDS) results indicated that the deposited amounts of calcium phosphate were much greater for the surface-treated Ti-7.5Mo than for the c.p. Ti, a finding attributable to or correlated with the higher pH value of the SBF containing surface-treated Ti-7.5Mo. Moreover, in the surface-treated Ti-7.5Mo, the pH value of the SBF approached a peak of 7.66 on the first day. A combination of NaOH treatment and subsequent Bioglass coating was successfully used to initiate in vitro HA formation in the surface of the Ti-7.5Mo alloy. PMID:20069344

  20. Availability of coal in the Hackett 7.5-minute quadrangle, Washington County, Pennsylvania

    SciTech Connect

    Lentz, L.J.; Neubaum, J.C.

    1996-09-01

    Coal has been extensively mined in Pennsylvania and elsewhere in the Appalachian Basin over the last 100 years. In an attempt to better define what coal is left, a new approach to quantifying resources, rooted in modern environmental and technological constraints, was needed. The Bureau of Topographic and Geologic Survey in cooperation with the United States Geological Survey, embarked in 1993 upon a series of six quadrangle studies for Pennsylvania to provide information about coal resources still accessible to mining. Using our data residing on the United States Geological Survey`s National Coal Resources Data System computer to compute resources for the Hackett 7.5-minute quadrangle, the available coal for the four principally mined seams in the area (the Pittsburgh, Redstone, Waynesburg, and Waynesburg A coals) could be determined by subtracting out mined-out areas from in-place coal to give remaining coal, and then subtracting land-use and technological restrictions to mining, such as wetlands, and subsidence waivers, respectively, from the remaining coal. Results of the study found that the amount of coal available for mining varied from 26 to 70 percent. it is felt by the authors that this quadrangle is typical of the mature nature of this mining region for this part of the geologic section, and that similar results might be expected for the other quadrangles to be studied in southwestern Pennsylvania.

  1. Geologic Map of the Needles 7.5' Quadrangle, California and Arizona

    USGS Publications Warehouse

    Malmon, Daniel V.; Howard, Keith A.; Priest, Susan S.

    2009-01-01

    The Needles 7.5' quadrangle straddles the Colorado River in the southern part of the Mohave Valley, in Mohave County, Arizona, and San Bernardino County, California. The quadrangle contains part of the Havasu National Wildlife Refuge, sections of the Fort Mojave Indian Reservation, most of the city of Needles, and several major interstate highways and railroads. The quadrangle is underlain by structurally undeformed sediments of Pliocene and younger age that were deposited by the Colorado River, as well as alluvial fan deposits on the piedmonts that flank the Black Mountains (in Arizona) and the Sacramento Mountains (in California). Multiple cycles of aggradation of the Colorado River, each followed by episodes of downcutting, are recorded by Pliocene through historic deposits on the piedmonts that border the floodplain. Regionally, the complex stratigraphy related to the Colorado River has been the subject of geologic interest for over 150 years. The California and Arizona piedmont portions of the Needles quadrangle expose a subset of this incompletely understood stratigraphic record. Thus, the stratigraphic sequence presented on this map is a version of the stratigraphy of the Colorado River as interpreted locally. The deposits in the recently active Colorado River valley floor support riparian habitat and irrigated agriculture. The distributions of sand-rich channel deposits and mud-rich floodplain deposits in the valley are mapped on the basis of the history of the movement of the Colorado River in the quadrangle, which has been documented in sequential aerial photographs since 1937 and maps dating to 1857.

  2. Biomimetic calcium phosphate coating on Ti-7.5Mo alloy for dental application.

    PubMed

    Escada, A L A; Machado, J P B; Schneider, S G; Rezende, M C R Alves; Claro, A P R Alves

    2011-11-01

    Titanium and its alloys have been used as bone-replacement implants due to their excellent corrosion resistance and biocompatibility. However, a titanium coating is a bioinert material and cannot bond chemically to bone tissue. The objective of this work was to evaluate the influence of alkaline treatment and heat treatment on the formation of calcium phosphate layer on the surface of a Ti-7.5Mo alloy after soaking in simulated body fluid (SBF). Thirty six titanium alloy plates were assigned into two groups. For group I, samples were immersed in a 5.0-M NaOH aqueous solution at 80°C for 72 h, washed with distilled water and dried at 40°C for 24 h. For group II, after the alkaline treatment, samples were heat-treated at 600°C for 1 h in an electrical furnace in air. Then, all samples were immersed in SBF for 7 or 14 days to allow the formation of a calcium phosphate coating on the surface. The surfaces were characterized using SEM, EDS, AFM and contact angle measurements. PMID:21909642

  3. EFFECTS OF PRENATAL METHAMPHETAMINE EXPOSURE ON BEHAVIORAL AND COGNITIVE FINDINGS AT 7.5 YEARS

    PubMed Central

    Diaz, Sabrina D.; Smith, Lynne M.; LaGasse, Linda L.; Derauf, Chris; Newman, Elana; Shah, Rizwan; Arria, Amelia; Huestis, Marilyn A.; Grotta, Sheri Della; Dansereau, Lynne M.; Neal, Charles; Lester, Barry M.

    2014-01-01

    Objective To examine child behavioral and cognitive outcomes after prenatal exposure to methamphetamine. Study design 412 mother-infant pairs (204 methamphetamine-exposed and 208 unexposed matched comparisons) were enrolled in the Infant Development, Environment and Lifestyle (IDEAL) study. The 151 children exposed to methamphetamine and 147 comparisons who attended the 7.5 year visit were included. Exposure was determined by maternal self-report and/or positive meconium toxicology. Maternal interviews assessed behavioral and cognitive outcomes using the Conner’s Parent Rating Scale – Revised: Short Form (CPRS-R:S). Results After adjusting for covariates, children exposed to methamphetamine had significantly higher cognitive problems subscale scores than comparisons and were 2.8 times more likely to have cognitive problems scores that were above average on the CPRS-R:S No association between prenatal methamphetamine exposure and behavioral problems, measured by the oppositional, hyperactivity and ADHD Index subscales, were found. Conclusion Prenatal methamphetamine exposure was associated with increased cognitive problems which may impact academic achievement and lead to increased negative behavioral outcomes. PMID:24630350

  4. Thermal infrared observations of Mars (7.5-12.8 microns) during the 1990 opposition

    NASA Technical Reports Server (NTRS)

    Roush, T. L.; Witteborn, F.; Lucy, P. G.; Graps, A.; Pollack, J. B.

    1991-01-01

    Thirteen spectra of Mars, in the 7.5 to 12.8 micron wavelength were obtained on 7 Dec. 1990 from the Infrared Telescope Facility (IRTF). For these observations, a grating with an ultimate resolving power of 120 to 250 was used and wavelengths were calibrated for each grating setting by comparison with the absorption spectrum of polystyrene measured prior to each set of observations. By sampling the Nyquist limit at the shortest wavelengths, an effective resolving power of about 120 over the entire wavelength range was achieved. A total of four grating settings were required to cover the entire wavelength region. A typical observing sequence consisted of: (1) positioning the grating in one of the intervals; (2) calibrating the wavelength of positions; and (3) obtaining spectra for a number of spots on Mars. Several observations of the nearby stellar standard star, alpha Tauri, were also acquired throughout the night. Each Mars spectrum represents an average of 4 to 6 measurements of the individual Mars spots. As a result of this observing sequence, the viewing geometry for a given location or spot on Mars does not change, but the actual location of the spot on Mars's surface varies somewhat between the different grating settings. Other aspects of the study are presented.

  5. Evidence of shallow fault zone strengthening after the 1992 M7.5 Landers, California, earthquake

    USGS Publications Warehouse

    Li, Y.-G.; Vidale, J.E.; Aki, K.; Xu, Fei; Burdette, T.

    1998-01-01

    Repeated seismic surveys of the Landers, California, fault zone that ruptured in the magnitude (M) 7.5 earthquake of 1992 reveal an increase in seismic velocity with time. P, S, and fault zone trapped waves were excited by near-surface explosions in two locations in 1994 and 1996, and were recorded on two linear, three-component seismic arrays deployed across the Johnson Valley fault trace. The travel times of P and S waves for identical shot-receiver pairs decreased by 0.5 to 1.5 percent from 1994 to 1996, with the larger changes at stations located within the fault zone. These observations indicate that the shallow Johnson Valley fault is strengthening after the main shock, most likely because of closure of cracks that were opened by the 1992 earthquake. The increase in velocity is consistent with the prevalence of dry over wet cracks and with a reduction in the apparent crack density near the fault zone by approximately 1.0 percent from 1994 to 1996.

  6. Geologic map of the Cucamonga Peak 7.5' quadrangle, San Bernardino County, California

    USGS Publications Warehouse

    Morton, D.M.; Matti, J.C.; Digital preparation by Koukladas, Catherine; Cossette, P.M.

    2001-01-01

    a. This Readme; includes in Appendix I, data contained in fif_met.txt b. The same graphic as plotted in 2 above. (Test plots have not produced 1:24,000-scale map sheets. Adobe Acrobat pagesize setting influences map scale.) The Correlation of Map Units and Description of Map Units is in the editorial format of USGS Miscellaneous Investigations Series (I-series) maps but has not been edited to comply with I-map standards. Within the geologic map data package, map units are identified by standard geologic map criteria such as formation-name, age, and lithology. Even though this is an author-prepared report, every attempt has been made to closely adhere to the stratigraphic nomenclature of the U. S. Geological Survey. Descriptions of units can be obtained by viewing or plotting the .pdf file (3b above) or plotting the postscript file (2 above). If roads in some areas, especially forest roads that parallel topographic contours, do not show well on plots of the geologic map, we recommend use of the USGS Cucamonga Peak 7.5’ topographic quadrangle in conjunction with the geologic map.

  7. Operational trials of remote mosquito trap systems for Japanese encephalitis virus surveillance in the Torres Strait, Australia.

    PubMed

    Ritchie, Scott A; van den Hurk, Andrew F; Zborowski, Paul; Kerlin, Tim J; Banks, David; Walker, James A; Lee, Jonathan M; Montgomery, Brian L; Smith, Greg A; Pyke, Alyssa T; Smith, Ina L

    2007-01-01

    Japanese encephalitis virus (JEV) appears nearly annually in the Torres Strait in far northern Queensland, Australia, and is a threat to invade the Australian mainland. Surveillance has involved the use of sentinel pigs that develop detectable viremias and antibody titers to JEV. However, pigs are amplifying hosts for JEV, and thus pose a health risk to the public and to pig handlers who bleed the pigs. A remote mosquito trap system would not have these risks. We report on trials using a remote mosquito trap system for the surveillance of JEV in the Torres Strait. The Mosquito Magnet (MM) Pro, MM Liberty Plus, and a novel updraft trap, the NAQS Mozzie Trap, were run at Badu and Moa islands in the Torres Strait and at Bamaga in the northern Cape York Peninsula from 2002-2005. TaqMan real-time polymerase chain reaction (PCR) was used to detect JEV nucleic acid in weekly mosquito collections. Sentinel pigs located at Badu were also bled and the serum processed by reverse transcriptase (RT)-PCR for JEV antigen and enzyme-linked immunosorbent assay (ELISA) for anti-JEV antibodies. JEV was detected in mosquito collections each year but not in each trap. No JEV was detected in trapped mosquitoes before detection in sentinel pigs. The mosquito trap system cost ca. AU$10,000 per site, about AU$5,000 less than a pig-based system. However, trap failures caused by mosquito-clogged motors, electrical faults, and blocked gas lines reduced the efficacy of some mosquito traps. Nonetheless, a remote mosquito trap system, employing stand alone traps and PCR for viral antigen detection, can be a safe, economical way to detect arbovirus activity in remote areas. PMID:18021024

  8. Vicariance and dispersal across an intermittent barrier: population genetic structure of marine animals across the Torres Strait land bridge

    NASA Astrophysics Data System (ADS)

    Mirams, A. G. K.; Treml, E. A.; Shields, J. L.; Liggins, L.; Riginos, C.

    2011-12-01

    Biogeographic barriers, some transitory in duration, are likely to have been important contributing factors to modern marine biodiversity in the Indo-Pacific region. One such barrier was the Torres Strait land bridge between continental Australia and New Guinea that persisted through much of the late Pleistocene and separated Indian and Pacific Ocean taxa. Here, we examine the patterns of mitochondrial DNA diversity for marine animals with present-day distributions spanning the Torres Strait. Specifically, we investigate whether there are concordant signatures across species, consistent with either vicariance or recent colonization from either ocean basin. We survey four species of reef fishes ( Apogon doederleini, Pomacentrus coelestis, Dascyllus trimaculatus, and Acanthurus triostegus) for mtDNA cytochrome oxidase 1 and control region variation and contrast these results to previous mtDNA studies in diverse marine animals with similar distributions. We find substantial genetic partitioning (estimated from F-statistics and coalescent approaches) between Indian and Pacific Ocean populations for many species, consistent with regional persistence through the late Pleistocene in both ocean basins. The species-specific estimates of genetic divergence, however, vary greatly and for reef fishes we estimate substantially different divergence times among species. It is likely that Indian and Pacific Ocean populations have been isolated for multiple glacial cycles for some species, whereas for other species genetic connections have been more recent. Regional estimates of genetic diversity and directionality of gene flow also vary among species. Thus, there is no apparent consistency among historical patterns across the Torres Strait for these co-distributed marine animals.

  9. The use of climatologies and Bayesian models to link observations to outcomes; an example from the Torres Strait.

    PubMed

    Bainbridge, Scott; Berkelmans, Ray

    2014-05-01

    After widespread coral bleaching in the Torres Strait in 2009-2010 a monitoring program was established under the National Environmental Research Program and run by the Torres Strait Regional Authority to identify ocean conditions that may lead to future bleaching. One component of this program was a real time ocean monitoring station located between Thursday and Horn Islands in the south-western part of the Torres Strait. A key outcome of the project was to make the scientific data and knowledge available to the local communities in a form that they could engage with and with which they could act to instigate outcomes relevant to their needs. The project developed climatologies to give context to the temperature data allowing for historical limits to define the significance of the real time data as related to the longer term mean. This allowed the identification of 'normal', 'significant' and 'extreme' temperature events which could be linked into appropriate responses. Bayesian models were used to encapsulate the current scientific knowledge about the drivers and responses involved in coral bleaching. These models were used to convert the environmental parameters to an output index reflecting the current and future likelihood of coral bleaching occurring. Two web sites were used to integrate the real time data, climatology data and the bleaching indices generated from the Bayesian models. The first was a more technical site developed for the local environmental managers within the Torres Strait Regional Authority, the second was targeted at the general public with a display located within the local radio station and broadcast on a daily basis. Engagement with the project has been high to the point where additional monitoring stations and data display kiosks are to be installed in the near future. The combination of climatologies to give context and conceptual models to embody system knowledge has allowed the project to go from delivering simple measurements to

  10. Reducing SS 304/316 hydrogen outgassing to 2x10{sup -15} torr l/cm{sup 2} s

    SciTech Connect

    Sasaki, Y. Tito

    2007-07-15

    Significant reduction in the outgassing rate of 300-series stainless steel is routinely attained through combination of electropolishing and vacuum baking. Preferential removal of Ni, Fe, and Mn from the surface of stainless steel by electropolishing creates a chromium-enriched surface. It also reduces the atomic surface area of the work piece closer to its geometric surface area. When the material is vacuum fired to remove interstitial hydrogen, the resultant stainless steel exhibits an outgassing rate of about 2x10{sup -15} torr l/cm{sup 2} s, as well as drastically reduced adsorption, absorption, and catalytic behaviors.

  11. Trail impacts and trail impact management related to ecotourism visitation at Torres del Paine National Park, Chile

    USGS Publications Warehouse

    Farrell, T.A.; Marion, J.L.

    2002-01-01

    Ecotourism and protected area visitation in Central and South America are largely dependent upon a relatively undisturbed quality of natural resources. However, visitation may impact vegetation, soil, water and wildlife resources, and degrade visitor facilities such as recreation sites and trails. Findings are reported from trail impact research conducted at Torres del Paine National Park in Patagonia, Chile. The frequency and magnitude of selected trail impacts and the relative effect of the amount of use, vegetation type, trail position and trail grade are investigated. Findings differed from previous studies in that amount of use was significantly related to both trail width increases and trail erosion. Management actions to minimize trail impacts are offered.

  12. Spatial patterns of sub-tidal seagrasses and their tissue nutrients in the Torres Strait, northern Australia: Implications for management

    NASA Astrophysics Data System (ADS)

    Sheppard, James K.; Carter, Alex B.; McKenzie, Len J.; Pitcher, C. Roland; Coles, Robert G.

    2008-09-01

    The distribution and nutritional profiles of sub-tidal seagrasses from the Torres Strait were surveyed and mapped across an area of 31,000 km 2. Benthic sediment composition, water depth, seagrass species type and nutrients were sampled at 168 points selected in a stratified representative pattern. Eleven species of seagrass were present at 56 (33.3%) of the sample points. Halophila spinulosa, Halophila ovalis, Cymodocea serrulata and Syringodium isoetifolium were the most common species and these were nutrient profiled. Sub-tidal seagrass distribution (and associated seagrass nutrient concentrations) was generally confined to northern-central and south-western regions of the survey area (Torres Strait. There were two regions in Torres Strait (north-central and south-western) where sub-tidal seagrass meadows were prevalent and of relatively higher

  13. Interaction of central venous pressure, intramuscular pressure, and carotid baroreflex function

    NASA Technical Reports Server (NTRS)

    Shi, X.; Foresman, B. H.; Raven, P. B.; Blomqvist, C. G. (Principal Investigator)

    1997-01-01

    Seven healthy volunteer men participated in an experiment involving lower body positive pressure (LBPP) of 30 Torr and acute volume expansions of 5-6% (VE-I) and 9-10% (VE-II) of their total blood volume (TBV) to differentiate the effect of increased intramuscular pressure and central venous pressure (CVP) on the maximal gain (Gmax) of the carotid baroreflex. During each experimental condition, the heart rate (HR), mean arterial pressure (MAP; intraradial artery or Finapres), and CVP (at the 3rd-4th intercostal space) were monitored continuously. Gmax was derived from the logistic modeling of the HR and MAP responses to ramped changes in carotid sinus transmural pressure using a protocol of pulsatile changes in neck chamber pressure from +40 to -65 Torr. The increase in CVP during +30-Torr LBPP was 1.5 mmHg (P < 0.05) and was similar to that observed during VE-I (1.7 mmHg, P > 0.05). The Gmax of the carotid baroreflex of HR and MAP was significantly decreased during LBPP by -0.145 +/- 0.039 beats x min(-1) x mmHg(-1) (38%) and -0.071 +/- 0.013 mmHg/mmHg (25%), respectively; however, VE-I did not affect Gmax. During VE-II, CVP was significantly greater than that elicited by LBPP, and the Gmax of the carotid baroreflex of the HR and MAP responses was significantly reduced. We conclude that carotid baroreflex responsiveness was selectively inhibited by increasing intramuscular pressure, possibly resulting in an activation of the intramuscular mechanoreceptors during LBPP. Furthermore, it would appear that the inhibition of the carotid baroreflex, via cardiopulmonary baroreceptor loading (increased CVP), occurred when a threshold pressure (CVP) was achieved.

  14. [Vitamin B(12) deficiency anaemia in a 7.5 months old girl].

    PubMed

    Jarosz, Malgorzata; Irga, Ninela; Wierzba, Jolanta

    2004-01-01

    Vitamin B(12) stores at birth are adequate for infants until the end of the first year of life even if it 's concentration in maternal breast milk is low. However, there are some situations in which infants have depleted vitamin B(12) stores and in addition have a low dietary intake of cobalamin. Vitamin B(12) depletion occurs in infants who are exclusively breastfed by mothers who have unrecognized pernicious anemia or are strict vegetarians for many years. In those infants symptoms of bone marrow disfunction and impaired development of the central nervous system appear already in the first months of life. Unrecognized cobalamin deficiency may lead to serious neurologic consequences, and even to the death of the child. The authors present a case of a 7.5 month old girl admitted to the Department of Paediatrics, Haematology, Oncology and Endocrinology. Gdańsk Medical University suspected of acute leukaemia. Based on a detailed diagnostic procedure a final diagnosis of vitamin B(12) deficiency anaemia was established. The child was exclusively breast-fed. Results of investigations into the reason for cobalamin deficiency in the patient s organism. Led to the diagnosis of pernicious anaemia in the mother. Such a suspicion had been made during pregnancy, but no continuation of investigations nor appropriate treatment were implemented. After treatment with vitamin B(12) supplements and modification of the diet the patient improved quickly and remarkably. A few months follow-up was enough to observe remarkable improvement of psychomotor development of this child. PMID:15738604

  15. Digital geologic map of Fawnskin 7.5' quadrangle, San Bernardino County, California

    USGS Publications Warehouse

    Miller, F.K.; Matti, J.C.; Brown, H.J.; Powell, R.E.

    2001-01-01

    a. This Readme; includes in Appendix I, data contained in fskn_met.txt b. The same graphic as plotted in 2 above. (Test plots from this .pdf do not produce 1:24,000-scale maps. Adobe Acrobat page-size settings control map scale.) This release includes features not found in most other digital geologic maps, in that all polygons, lines, and points in the coverage are encoded with detailed, comprehensive geologic data contained in six INFO data tables (.rel). (See Matti and others, 1998a, 1998b, and 1998c, for information on how the encoding may be accessed and utilized.) No paper map is included in the Open-File Report, but a PostScript plot file containing an image of the geologic map sheet, topographic base, Correlation of Map Units (CMU), and detailed Description of Map Units (DMU) is. The Correlation of Map Units and Description of Map Units are in the editorial format of USGS Miscellaneous Investigations Series maps (I-maps) but have not been edited to comply with I-map standards. Within the geologic map data package, map units are identified by such standard geologic-map criteria as formation name, age, and lithology. Even though this is an author-prepared report, every attempt has been made to closely adhere to the stratigraphic nomenclature of the U.S. Geological Survey. Descriptions of units can be obtained by viewing or plotting the .pdf file (3b above) or plotting the PostScript file (2 above). If roads in some areas, especially roads that parallel topographic contours, do not show well on plots of the geologic map, we recommend use of the USGS Fawnskin 7.5' topographic quadrangle in conjunction with the geologic map.

  16. Geologic map of the Orchard 7.5' quadrangle, Morgan County, Colorado

    USGS Publications Warehouse

    Berry, Margaret E.; Slate, Janet L.; Hanson, Paul R.; Brandt, Theodore R.

    2015-01-01

    The Orchard 7.5' quadrangle is located along the South Platte River corridor on the semi-arid plains of eastern Colorado, and contains surficial deposits that record alluvial, eolian, and hillslope processes that have operated through environmental changes from the Pleistocene to the present. The South Platte River, originating high in the Colorado Front Range, has played a major role in shaping the geology of the quadrangle, which is situated downstream of where the last of the major headwater tributaries (St. Vrain, Big Thompson, and Cache la Poudre) join the river. Recurrent glaciation (and deglaciation) of basin headwaters affected river discharge and sediment supply far downstream, influencing alluvium deposition and terrace formation in the Orchard quadrangle. Kiowa and Bijou Creeks, unglaciated tributaries originating east of the Front Range also have played a major role by periodically delivering large volumes of sediment to the river during flood events, which may have temporarily dammed the river. Eolian sand deposits of the Greeley (north of river) and Fort Morgan (south of river) dune fields cover much of the quadrangle and record past episodes of sand mobilization during times of drought. With the onset of irrigation during historic times, the South Platte River has changed from a broad, shallow, and sandy braided river with highly seasonal discharge to a much narrower, deeper river with braided-meandering transition morphology and more uniform discharge. Along this reach, the river has incised into Upper Cretaceous Pierre Shale, which, although buried by alluvial deposits in Orchard quadrangle, is locally exposed downstream along the South Platte River bluff near the Bijou Creek confluence, in some of the larger draws, and along Wildcat Creek.

  17. Geologic map of the Masters 7.5' Quadrangle, Weld and Morgan Counties, Colorado

    USGS Publications Warehouse

    Berry, Margaret E.; Slate, Janet L.; Paces, James B.; Hanson, Paul R.; Brandt, Theodore R.

    2015-01-01

    The Masters 7.5' quadrangle is located along the South Platte River corridor on the semiarid plains of eastern Colorado and contains surficial deposits that record alluvial, eolian, and hillslope processes that have operated in concert with environmental changes from Pleistocene to present time. The South Platte River, originating high in the Colorado Front Range, has played a major role in shaping the surficial geology of the quadrangle, which is situated downstream of where the last of the major headwater tributaries (St. Vrain, Big Thompson, and Cache la Poudre) join the river. Recurrent glaciation (and deglaciation) of basin headwaters affected river discharge and sediment supply far downstream, influencing deposition of alluvium and terrace formation in the Masters quadrangle. Kiowa and Bijou Creeks, unglaciated tributaries originating in the Colorado Piedmont east of the Front Range and joining the South Platte River just downstream of the Masters quadrangle, also have played a major role by periodically delivering large volumes of sediment to the river during flood events, which may have temporarily dammed the river. Eolian sand deposits of the Greeley (north of river) and Fort Morgan (south of river) dune fields cover much of the quadrangle and record past episodes of sand mobilization during times of prolonged drought. With the onset of irrigation and damming during historical times, the South Platte River has changed from a broad, shallow sandy braided river with highly seasonal discharge to a much narrower, deeper river with braided-meandering transition morphology and more uniform discharge. Along the reach of river in the Masters quadrangle, the river has incised into Upper Cretaceous Pierre Shale, which, although buried by alluvial deposits here, is locally exposed downstream along the South Platte River bluff near the Bijou Creek confluence, in some of the larger draws, and along Wildcat Creek.

  18. Tannic Acid Inhibits Hepatitis C Virus Entry into Huh7.5 Cells

    PubMed Central

    Hagedorn, Curt H.

    2015-01-01

    Chronic infection with the hepatitis C virus (HCV) is a cause of cirrhosis and hepatocellular carcinoma worldwide. Although antiviral therapy has dramatically improved recently, a number of patients remain untreated and some do not clear infection with treatment. Viral entry is an essential step in initiating and maintaining chronic HCV infections. One dramatic example of this is the nearly 100% infection of newly transplanted livers in patients with chronic hepatitis C. HCV entry inhibitors could play a critical role in preventing HCV infection of newly transplanted livers. Tannic acid, a polymer of gallic acid and glucose molecules, is a plant-derived polyphenol that defends some plants from insects and microbial infections. It has been shown to have a variety of biological effects, including antiviral activity, and is used as a flavoring agent in foods and beverages. In this study, we demonstrate that tannic acid is a potent inhibitor of HCV entry into Huh7.5 cells at low concentrations (IC50 5.8 μM). It also blocks cell-to-cell spread in infectious HCV cell cultures, but does not inhibit HCV replication following infection. Moreover, experimental results indicate that tannic acid inhibits an early step of viral entry, such as the docking of HCV at the cell surface. Gallic acid, tannic acid’s structural component, did not show any anti-HCV activity including inhibition of HCV entry or replication at concentrations up to 25 μM. It is possible the tannin structure is related on the effect on HCV inhibition. Tannic acid, which is widely distributed in plants and foods, has HCV antiviral activity in cell culture at low micromolar concentrations, may provide a relative inexpensive adjuvant to direct-acting HCV antivirals and warrants future investigation. PMID:26186636

  19. Effects of 7.5% carbon dioxide (CO2) inhalation and ethnicity on face memory

    PubMed Central

    Attwood, Angela S.; Catling, Jon C.; Kwong, Alex S.F.; Munafò, Marcus R.

    2015-01-01

    The ability to accurately verify facial identity has important forensic implications, but this ability is fallible. Research suggests that anxiety at the time of encoding can impair subsequent recall, but no studies have investigated the effects of anxiety at the time of recall in an experimental paradigm. This study addresses this gap using the carbon dioxide (CO2) model of anxiety induction. Thirty participants completed two inhalations: one of 7.5% CO2-enriched air and one of medical air (i.e., placebo). Prior to each inhalation, participants were presented with 16 facial images (50% own-ethnicity, 50% other-ethnicity). During the inhalation they were required to identify which faces had been seen before from a set of 32 images (16 seen-before and 16 novel images). Identification accuracy was lower during CO2 inhalation compared to air (F[1,29] = 5.5, p = .026, ηp2 = .16), and false alarm rate was higher for other-ethnicity faces compared to own-ethnicity faces (F[1,29] = 11.3, p = .002, ηp2 = .28). There was no evidence of gas by ethnicity interactions for accuracy or false alarms (ps > .34). Ratings of decision confidence did not differ by gas condition, suggesting that participants were unaware of differences in performance. These findings suggest that anxiety, at the point of recognition, impairs facial identification accuracy. This has substantial implications for eyewitness memory situations, and suggests that efforts should be made to attenuate the anxiety in these situations in order to improve the validity of identification. PMID:25890273

  20. Comparing the role of absolute sea-level rise and vertical tectonic motions in coastal flooding, Torres Islands (Vanuatu)

    NASA Astrophysics Data System (ADS)

    Ballu, Valérie; Bouin, Marie-Noëlle; Siméoni, Patricia; Crawford, Wayne C.; Calmant, Stephane; Boré, Jean-Michel; Kanas, Tony; Pelletier, Bernard

    2011-08-01

    Since the late 1990s, rising sea levels around the Torres Islands (north Vanuatu, southwest Pacific) have caused strong local and international concern. In 2002-2004, a village was displaced due to increasing sea incursions, and in 2005 a United Nations Environment Programme press release referred to the displaced village as perhaps the world's first climate change "refugees." We show here that vertical motions of the Torres Islands themselves dominate the apparent sea-level rise observed on the islands. From 1997 to 2009, the absolute sea level rose by 150 + /-20 mm. But GPS data reveal that the islands subsided by 117 + /-30 mm over the same time period, almost doubling the apparent gradual sea-level rise. Moreover, large earthquakes that occurred just before and after this period caused several hundreds of mm of sudden vertical motion, generating larger apparent sea-level changes than those observed during the entire intervening period. Our results show that vertical ground motions must be accounted for when evaluating sea-level change hazards in active tectonic regions. These data are needed to help communities and governments understand environmental changes and make the best decisions for their future.

  1. Aggressive Extraocular Sebaceous Carcinoma of the Scalp Involving the Brain in a Patient With Muir-Torre Syndrome.

    PubMed

    Hadravsky, Ladislav; Kazakov, Dmitry V; Stehlik, Jan; Michal, Michal; Curik, Romuald; Krupa, Petr; Skalova, Alena; Kacerovska, Denisa

    2016-08-01

    This article reports an unusual case of aggressive extraocular sebaceous carcinoma located on the scalp with subsequent usurpation of the bone and penetrating through the bone and meninges to the brain in a 56-year-old man affected by Muir-Torre syndrome. Microscopically, the sebaceous neoplasm was located in the middle to deep dermis without any connection to the epidermis and showed a multinodular growth with neoplastic nodules with a central comedo-type necrosis separated from each other by fibrovascular stroma. The nodules were composed of varying proportions of mature sebaceous cells and atypical basaloid cells with high degree of atypia, including high nuclear/cytoplasmic ratio, nuclear pleomorphism, macronucleoli, atypical mitoses, and necrosis. The neoplasm was totally removed. Histopathological examinations of the recurrent lesion showed identical morphological features and, in addition, signs of the tumors growing through the periosteum were noted. In the final excision specimen, both the dura mater and the brain tissue were infiltrated by the sebaceous carcinoma. The diagnosis of Muir-Torre syndrome was confirmed by molecular genetic investigation that revealed an identical germline mutation in MSH2 gene in several family members, some of whom had colorectal tumors. PMID:26779764

  2. Comparing the role of absolute sea-level rise and vertical tectonic motions in coastal flooding, Torres Islands (Vanuatu)

    PubMed Central

    Ballu, Valérie; Bouin, Marie-Noëlle; Siméoni, Patricia; Crawford, Wayne C.; Calmant, Stephane; Boré, Jean-Michel; Kanas, Tony; Pelletier, Bernard

    2011-01-01

    Since the late 1990s, rising sea levels around the Torres Islands (north Vanuatu, southwest Pacific) have caused strong local and international concern. In 2002–2004, a village was displaced due to increasing sea incursions, and in 2005 a United Nations Environment Programme press release referred to the displaced village as perhaps the world’s first climate change “refugees.” We show here that vertical motions of the Torres Islands themselves dominate the apparent sea-level rise observed on the islands. From 1997 to 2009, the absolute sea level rose by 150 + /-20 mm. But GPS data reveal that the islands subsided by 117 + /-30 mm over the same time period, almost doubling the apparent gradual sea-level rise. Moreover, large earthquakes that occurred just before and after this period caused several hundreds of mm of sudden vertical motion, generating larger apparent sea-level changes than those observed during the entire intervening period. Our results show that vertical ground motions must be accounted for when evaluating sea-level change hazards in active tectonic regions. These data are needed to help communities and governments understand environmental changes and make the best decisions for their future. PMID:21795605

  3. Geologic map of the Granite 7.5' quadrangle, Lake and Chaffee Counties, Colorado

    USGS Publications Warehouse

    Shroba, Ralph R.; Kellogg, Karl S.; Brandt, Theodore R.

    2014-01-01

    The geologic map of the Granite 7.5' quadrangle, Lake and Chaffee Counties, Colorado, portrays the geology in the upper Arkansas valley and along the lower flanks of the Sawatch Range and Mosquito Range near the town of Granite. The oldest rocks, exposed in the southern and eastern parts of the quadrangle, include gneiss and plutonic rocks of Paleoproterozoic age. These rocks are intruded by younger plutonic rocks of Mesoproterozoic age. Felsic hypabyssal dikes, plugs, and plutons, ranging in age from Late Cretaceous or Paleocene to late Oligocene, locally intruded Proterozoic rocks. A small andesite lava flow of upper Oligocene age overlies Paleoproterozoic rock, just south of the Twin Lakes Reservoir. Gravelly fluvial and fan deposits of the Miocene and lower Pliocene(?) Dry Union Formation are preserved in the post-30 Ma upper Arkansas valley graben, a northern extension of the Rio Grande rift. Mostly north-northwest-trending faults displace deposits of the Dry Union Formation and older rock units. Light detection and ranging (lidar) imagery suggests that two short faults, near the Arkansas River, may displace surficial deposits as young as middle Pleistocene. Surficial deposits of middle Pleistocene to Holocene age are widespread in the Granite quadrangle, particularly in the major valleys and on slopes underlain by the Dry Union Formation. The main deposits are glacial outwash and post-glacial alluvium; mass-movement deposits transported by creep, debris flow, landsliding, and rockfall; till deposited during the Pinedale, Bull Lake, and pre-Bull Lake glaciations; rock-glacier deposits; and placer-tailings deposits formed by hydraulic mining and other mining methods used to concentrate native gold. Hydrologic and geologic processes locally affect use of the land and locally may be of concern regarding the stability of buildings and infrastructure, chiefly in low-lying areas along and near stream channels and locally in areas of moderate to steep slopes. Low

  4. Increases in intramuscular pressure raise arterial blood pressure during dynamic exercise

    NASA Technical Reports Server (NTRS)

    Gallagher, K. M.; Fadel, P. J.; Smith, S. A.; Norton, K. H.; Querry, R. G.; Olivencia-Yurvati, A.; Raven, P. B.

    2001-01-01

    This investigation was designed to determine the role of intramuscular pressure-sensitive mechanoreceptors and chemically sensitive metaboreceptors in affecting the blood pressure response to dynamic exercise in humans. Sixteen subjects performed incremental (20 W/min) cycle exercise to fatigue under four conditions: control, exercise with thigh cuff occlusion of 90 Torr (Cuff occlusion), exercise with lower body positive pressure (LBPP) of 45 Torr, and a combination of thigh cuff occlusion and LBPP (combination). Indexes of central command (heart rate, oxygen uptake, ratings of perceived exertion, and electromyographic activity), cardiac output, stroke volume, and total peripheral resistance were not significantly different between the four conditions. Mechanical stimulation during LBPP and combination conditions resulted in significant elevations in intramuscular pressure and mean arterial pressure from control at rest and throughout the incremental exercise protocol (P < 0.05). Conversely, there existed no significant changes in mean arterial pressure when the metaboreflex was stimulated by cuff occlusion. These findings suggest that under normal conditions the mechanoreflex is tonically active and is the primary mediator of exercise pressor reflex-induced alterations in arterial blood pressure during submaximal dynamic exercise in humans.

  5. Measurement of partial pressures in vacuum technology and vacuum physics

    NASA Technical Reports Server (NTRS)

    Huber, W. K.

    1986-01-01

    It is pointed out that the measurement of gaseous pressures of less than 0.0001 torr is based on the ionization of gas atoms and molecules due to collisions with electrons. The particle density is determined in place of the pressure. The ionization cross sections for molecules of various gases are discussed. It is found that the true pressure in a vacuum system cannot be determined with certainty if it is unknown which gas is present. Effects of partial pressure determination on the condition of the vacuum system are discussed together with ion sources, systems of separation, and ion detection.

  6. VizieR Online Data Catalog: Photometry and spectroscopy of V501 Mon (Torres+, 2015)

    NASA Astrophysics Data System (ADS)

    Torres, G.; Lacy, C. H. S.; Pavlovski, K.; Fekel, F. C.; Muterspaugh, M. W.

    2016-06-01

    curve of V501 Mon for analysis. A total of 6729 images were obtained over 281 nights between 2005 January and February. Table5 lists these differential photometric measurements. Measurements of the times of eclipse for V501 Mon collected from the literature are listed in Table1, and cover approximately seven decades. Abundances for individual elements are listed in Table7. (5 data files).

  7. Variable pressure ionization detector for gas chromatography

    DOEpatents

    Buchanan, Michelle V.; Wise, Marcus B.

    1988-01-01

    Method and apparatus for differentiating organic compounds based on their electron affinity. An electron capture detector cell (ECD) is operated at pressures ranging from atmospheric to less than 1 torr. Through variation of the pressure within the ECD cell, the organic compounds are induced to either capture or emit electrons. Differentiation of isomeric compounds can be obtianed when, at a given pressure, one isomer is in the emission mode and the other is in the capture mode. Output of the ECD is recorded by chromatogram. The invention also includes a method for obtaining the zero-crossing pressure of a compound, defined as the pressure at which the competing emission and capture reactions are balanced and which may be correlated to the electron affinity of a compound.

  8. Preliminary Geologic Map of the Hemet 7.5' Quadrangle, Riverside County, California

    USGS Publications Warehouse

    Morton, Douglas M.; Matti, Jon C.

    2005-01-01

    The Hemet 7.5' quadrangle is located near the eastern edge of the Perris block of the Peninsular Ranges batholith. The northeastern corner of the quadrangle extends across the San Jacinto Fault Zone onto the edge of the San Jacinto Mountains block. The Perris block is a relatively stable area located between the Elsinore Fault Zone on the west and the San Jacinto Fault Zone on the east. Both of the fault zones are active; the San Jacinto being the seismically most active in southern California. The fault zone is obscured by very young alluvial deposits. The concealed location of the San Jacinto Fault Zone shown on this quadrangle is after Sharp, 1967. The geology of the quadrangle is dominated by Cretaceous tonalite formerly included in the Coahuila Valley pluton of Sharp (1967). The northern part of Sharp's Coahuila Valley pluton is separated out as the Hemet pluton. Tonalite of the Hemet pluton is more heterogeneous than the tonalite of the Coahuila Valley pluton and has a different sturctural pattern. The Coahuila Valley pluton consists of relatively homogeneous hornblende-biotite tonalite, commonly with readily visible large euhedral honey-colored sphene crystals. Only the tip of the adjacent Tucalota Valley pluton, another large tonalite pluton, extends into the quadrangle. Tonalite of the Tucalota Valley pluton is very similar to the tonalite of the Coahuila Valley pluton except it generally lacks readily visible sphene. In the western part of the quadrangle a variety of amphibolite grade metasedimentary rocks are informally referred to as the rocks of Menifee Valley; named for exposures around Menifee Valley west of the Hemet quadrangle. In the southwestern corner of the quadrangle a mixture of schist and gneiss marks a suture that separated low metamorphic grade metasedimentary rocks to the west from high metamorphic grade rocks to the east. The age of these rocks is interpreted to be Triassic and the age of the suturing is about 100 Ma, essentially the

  9. Reconnaissance geologic map of the Dixonville 7.5' quadrangle, Oregon

    USGS Publications Warehouse

    Jayko, Angela S.; Wells, Ray E.; Digital Database by Givler, R. W.; Fenton, J.S.; Sinor, M.

    2001-01-01

    The Dixonville 7.5 minute quadrangle is situated near the edge of two major geologic and tectonic provinces the northernmost Klamath Mountains and the southeastern part of the Oregon Coast Ranges (Figure 1). Rocks of the Klamath Mountains province that lie within the study area include ultramafic, mafic, intermediate and siliceous igneous types (Diller, 1898, Ramp, 1972, Ryberg, 1984). Similar rock associations that lie to the southwest yield Late Jurassic and earliest Cretaceous radiometric ages (Dott, 1965, Saleeby, et al., 1982, Hotz, 1971, Harper and Wright, 1984). These rocks, which are part of the Western Klamath terrane (Western Jurassic belt of (Irwin, 1964), are considered to have formed within an extensive volcanic arc and rifted arc complex (Harper and Wright, 1984) that lay along western North America during the Late Jurassic (Garcia, 1979, Garcia, 1982, Saleeby, et al., 1982, Ryberg, 1984). Imbricate thrust faulting and collapse of the arc during the Nevadan orogeny, which ranged in age between about 150 to 145 Ma in the Klamath region (Coleman, 1972, Saleeby, et al., 1982, Harper and Wright, 1984) was syntectonic with, or closely followed by deposition of the volcano-lithic clastic rocks of the Myrtle Group. The Myrtle Group consists of Upper Jurassic and Lower to middle Cretaceous turbidity and mass flow deposits considered to be either arc basin and/or post-orogenic flysh basins that were syntectonic with the waning phases of arc collapse (Imlay et al., 1959, Ryberg, 1984, Garcia, 1982, Roure.and Blanchet, 1983). The intermediate and mafic igneous rocks of the Rogue arc and the pre-Nevadan sedimentary cover (the Galice Formation, (Garcia, 1979) are intruded by siliceous and intermediate plutonic rocks principally of quartz diorite and granodiorite composition (Dott, 1965, Saleeby, et al., 1982, Garcia, 1982, Harper and Wright, 1984). The plutonic rocks are locally tectonized into amphibolite, gneiss, banded gneiss and augen gneiss. Similar

  10. Reduced sediment melting at 7.5-12 GPa: phase relations, geochemical signals and diamond nucleation

    NASA Astrophysics Data System (ADS)

    Brey, G. P.; Girnis, A. V.; Bulatov, V. K.; Höfer, H. E.; Gerdes, A.; Woodland, A. B.

    2015-08-01

    Melting of carbonated sediment in the presence of graphite or diamond was experimentally investigated at 7.5-12 GPa and 800-1600 °C in a multianvil apparatus. Two starting materials similar to GLOSS of Plank and Langmuir (Chem Geol 145:325-394, 1998) were prepared from oxides, carbonates, hydroxides and graphite. One mixture (Na-gloss) was identical in major element composition to GLOSS, and the other was poorer in Na and richer in K (K-gloss). Both starting mixtures contained ~6 wt% CO2 and 7 wt% H2O and were doped at a ~100 ppm level with a number of trace elements, including REE, LILE and HFSE. The near-solidus mineral assemblage contained a silica polymorph (coesite or stishovite), garnet, kyanite, clinopyroxene, carbonates (aragonite and magnesite-siderite solid solution), zircon, rutile, bearthite and hydrous phases (phengite and lawsonite at <9 GPa and the hydrous aluminosilicates topaz-OH and phase egg at >10 GPa). Hydrous phases disappear at ~900 °C, and carbonates persist up to 1000-1100 °C. At temperatures >1200 °C, the mineral assemblage consists of coesite or stishovite, kyanite and garnet. Clinopyroxene stability depends strongly on the Na content in the starting mixture; it remains in the Na-gloss composition up to 1600 °C at 12 GPa, but was not observed in K-gloss experiments above 1200 °C. The composition of melt or fluid changes gradually with increasing temperature from hydrous carbonate-rich (<10 wt% SiO2) at 800-1000 °C to volatile-rich silicate liquids (up to 40 wt% SiO2) at high temperatures. Trace elements were analyzed in melts and crystalline phases by LA ICP MS. The garnet-melt and clinopyroxene-melt partition coefficients are in general consistent with results from the literature for volatile-free systems and silicocarbonate melts derived by melting carbonated peridotites. Most trace elements are strongly incompatible in kyanite and silica polymorphs ( D < 0.01), except for V, Cr and Ni, which are slightly compatible in kyanite

  11. Geologic map and digital database of the Pinto Mountain 7.5 minute quadrangle, Riverside County, California

    USGS Publications Warehouse

    Powell, Robert E.

    2002-01-01

    The geologic map and digital database of the Pinto Mountain quadrangle are products of a regional geologic mapping effort undertaken in the eastern Transverse Ranges in and around Joshua Tree National Park. This investigation, part of the Southern California Areal Mapping Project (SCAMP), is conducted in cooperation with the California Geologic Survey and the National Park Service. In line with the goals of the National Cooperative Geologic Mapping Program (NCGMP), mapping of the Pinto Mountain and other quadrangles has been directed toward generating a multipurpose digital geologic map database that is applicable to land-related investigations in the earth and biological sciences. This mapping is conducted to further understanding of bedrock geology and surficial processes in the region and to document evidence for seismotectonic activity in the eastern Transverse Ranges. It is also intended to serve as a base layer suitable for ecosystem and mineral resource assessment and for building a hydrogeologic framework for Pinto Basin. Initial investigations span Pinto Basin from the Hexie and Eagle Mountains northward into the Pinto Mountains. Quadrangles mapped include the Conejo Well 7.5-minute quadrangle (Powell, 2001a), the Porcupine Wash 7.5-minute quadrangle (Powell, 2001b), the Pinto Mountain 7.5-minute quadrangle, and the San Bernardino Wash 7.5-minute quadrangle (Powell, 2002). Parts of the Pinto Mountain quadrangle had been mapped previously at a variety of scales (Weir, and Bader, 1963; Hope, 1966, 1969; Jennings, 1967; Powell, 1981, 1993).

  12. Geologic map and digital database of the San Bernardino Wash 7.5 minute quadrangle, Riverside County, California

    USGS Publications Warehouse

    Powell, Robert E.; digital preparation by Cossette, Pamela M.

    2002-01-01

    The geologic map and digital database of the San Bernardino Wash quadrangle are products of a regional geologic mapping effort undertaken in the eastern Transverse Ranges in and around Joshua Tree National Park. This investigation, part of the Southern California Areal Mapping Project (SCAMP), is conducted in cooperation with the California Geologic Survey and the National Park Service. In line with the goals of the National Cooperative Geologic Mapping Program (NCGMP), mapping of the San Bernardino Wash and other quadrangles has been directed toward generating a multipurpose digital geologic map database that is applicable to land-related investigations in the earth and biological sciences. This mapping is conducted to further understanding of bedrock geology and surficial processes in the region and to document evidence for seismotectonic activity in the eastern Transverse Ranges. It is also intended to serve as a base layer suitable for ecosystem and mineral resource assessment and for building a hydrogeologic framework for Pinto Basin. Initial investigations span Pinto Basin from the Hexie and Eagle Mountains northward into the Pinto Mountains (see fig. 1). Quadrangles mapped include the Conejo Well 7.5-minute quadrangle (Powell, 2001a), the Porcupine Wash 7.5-minute quadrangle (Powell, 2001b), the Pinto Mountain 7.5-minute quadrangle (Powell, 2002), and the San Bernardino Wash 7.5-minute quadrangle. Parts of the San Bernardino Wash quadrangle had been mapped previously at a variety of scales (Weir, and Bader, 1963; Hope, 1966, 1969; Jennings, 1967; Powell, 1981, 1993).

  13. Oxygen partial pressure dependence of magnetic, optical and magneto-optical properties of epitaxial cobalt-substituted SrTiO₃ films.

    PubMed

    Onbaşlı, Mehmet C; Goto, Taichi; Tang, Astera; Pan, Annia; Battal, Enes; Okyay, Ali K; Dionne, Gerald F; Ross, C A

    2015-05-18

    Cobalt-substituted SrTiO3 films (SrTi0.70Co0.30O(3-δ)) were grown on SrTiO3 substrates using pulsed laser deposition under oxygen pressures ranging from 1 μTorr to 20 mTorr. The effect of oxygen pressure on structural, magnetic, optical, and magneto-optical properties of the films was investigated. The film grown at 3 μTorr has the highest Faraday rotation (FR) and magnetic saturation moment (M(s)). Increasing oxygen pressure during growth reduced M(s), FR and optical absorption in the near-infrared. This trend is attributed to decreasing Co2+ ion concentration and oxygen vacancy concentration with higher oxygen partial pressure during growth. PMID:26074589

  14. Electronic Transport Properties of the PrAlO3/SrTiO3 Interface: Effects of Oxygen Pressure

    NASA Astrophysics Data System (ADS)

    Mozaffari, Shirin; Monti, Mark C.; Guchhait, Samaresh; Paster, Jeremy W.; Tennant, Daniel M.; Markert, John T.

    2015-03-01

    We explored the electronic and magnetic behavior of epitaxial PrAlO3 films on TiO2-terminated SrTiO3 (PAO/STO) substrates grown by pulsed laser deposition at various oxygen pressures. We report structural (x-ray and AFM), electronic (van der Pauw resistivity, magnetoresistance (MR), and Hall effect), and magnetic data for PAO films grown in 10-3-10-6 torr O2. Resistivity data exhibit metallic behavior from 300 K down to 100-150 K (75 K; 40 K) for the interface grown in 10-3 (10-4; 10-5) torr O2, and semiconducting behavior below that. One 10-3 torr O2 interface shows typical behavior for current parallel to atomic terraces, and a resistance anomaly in the range 50-100 K for current perpendicular to step edges. MR data for all 10-3-10-4 torr O2 samples show a small (<=0.5%) positive MR at low fields, and a larger negative MR (2-30%) at high fields; for 10-5 torr O2, the MR is positive up to 9 tesla. Sheet resistivity for the 10-6 torr O2 interface is anomalously low, suggesting a thick conducting layer. Hall effect data exhibit several variations in the carrier density. We discuss these data considering intrinsic charge transfer, oxygen vacancies and interstitials, and cation interdiffusion.

  15. Deadly Choices™ community health events: a health promotion initiative for urban Aboriginal and Torres Strait Islander people.

    PubMed

    Malseed, Claire; Nelson, Alison; Ware, Robert; Lacey, Ian; Lander, Keiron

    2014-01-01

    The present study was an evaluation of the effectiveness of Deadly Choices™ community events for improving participants' short-term knowledge of chronic disease and risk factors, and increasing community engagement with local health services. Surveys were completed directly before and after participating in health education activities (pre and post surveys, respectively) assessing knowledge of chronic diseases and risk factors at three Deadly Choices community events and four National Aboriginal and Islander Day Observance Committee (NAIDOC) events in south-east Queensland where Deadly Choices health education activities took place. An audit trail was conducted at two Deadly Choices community events in Brisbane to identify the proportion of participants who undertook a health screen at the event who then followed up for a Medicare-funded health check (MBS item 715) or other appointment at an Aboriginal and Torres Strait Islander clinic in the local area within 2 months. Results were compared with a sample of participants who attended one Deadly Choices community event but did not complete a health screen. There were 472 community members who completed a pre and post survey. All knowledge scores significantly improved between baseline and follow up. Although based on a small sample, the audit trail results suggest individuals who participated in a health screen at the community day were approximately twice as likely to go back to a clinic to receive a full health check or have an alternative appointment compared with attendees who did not participate in a screen. Community events that include opportunities for health education and health screening are an effective strategy to improve chronic disease health literacy skills and appear to have the potential to increase community engagement with local Aboriginal and Torres Strait Islander health services. PMID:25262748

  16. Operation of a THGEM-based detector in low-pressure Helium

    NASA Astrophysics Data System (ADS)

    Cortesi, M.; Yurkon, J.; Stolz, A.

    2015-02-01

    In view of a possible application as a charge-particle track readout for an Active Target Time Projection Chamber (AT-TPC), the operating properties of THick Gaseous Electron Multipliers (THGEM) in pure low-pressure Helium were investigated. This paper includes the effective gain dependence on pressure for different detector configurations (single-, double-, triple-cascade setup), long-term gain stability and energy resolution from tracks of 5.5 MeV alpha particles. Stable operational conditions and maximum detector gains of 104-107 have been achieved in pure Helium at pressure ranging from 100 torr up to 760 torr. Energy resolution of 6.65% (FWHM) for 690 keV of energy deposited by 5.5 MeV alpha particles at 350 torr was measured. The expected energy resolution for the full track is around 2.4% (FWHM). These results, together with the robustness of THGEM electrodes against spark damage, make THGEM structures highly competitive compared to other technologies considered for TPC applications in an active target operating with pure noble gases, requiring a high dynamic range and a wide operating pressure range down to few hundred torr.

  17. A High-Pressure Hollow Cathode Ionization Source for In-Situ Detection of Organic Molecules

    NASA Technical Reports Server (NTRS)

    Beegle, L. W.; Kanik, I.

    2001-01-01

    We have designed, constructed and characterized a new high-pressure (1-5 Torr) hollow cathode discharge source (HCDS) that can be utilized as an ionizer in a wide variety of mass analyzers. Additional information is contained in the original extended abstract.

  18. The 7.5K lbf thrust engine preliminary design for Orbit Transfer Vehicle

    NASA Technical Reports Server (NTRS)

    Hayden, Warren R.; Sabiers, Ralph; Schneider, Judy

    1994-01-01

    This document summarizes the preliminary design of the Aerojet version of the Orbit Transfer Vehicle main engine. The concept of a 7500 lbf thrust LO2/GH2 engine using the dual expander cycle for optimum efficiency is validated through power balance and thermal calculations. The engine is capable of 10:1 throttling from a nominal 2000 psia to a 200 psia chamber pressure. Reservations are detailed on the feasibility of a tank head start, but the design incorporates low speed turbopumps to mitigate the problem. The mechanically separate high speed turbopumps use hydrostatic bearings to meet engine life requirements, and operate at sub-critical speed for better throttling ability. All components were successfully packaged in the restricted envelope set by the clearances for the extendible/retractable nozzle. Gimbal design uses an innovative primary and engine out gimbal system to meet the +/- 20 deg gimbal requirement. The hydrogen regenerator and LOX/GH2 heat exchanger uses the Aerojet platelet structures approach for a highly compact component design. The extendible/retractable nozzle assembly uses an electric motor driven jack-screw design and a one segment carbon-carbon or silicide coated columbium nozzle with an area ratio, when extended, of 1430:1. A reliability analysis and risk assessment concludes the report.

  19. Effects of low-pressure air on oxygen contamination and lithium corrosion of a tantalum alloy, T-111, at 980 and 1260 C

    NASA Technical Reports Server (NTRS)

    Gahn, R. F.

    1974-01-01

    The effects were studied of low-pressure air on contamination and corrosion in the tantalum alloy T-111/lithium system at 980 and 1260 C. Capsules of T-111 containing lithium were exposed to six vacuum levels between 1 x 10 to the 8th power and 0.0003 torr by controlled air leakage into a vacuum system. Capsules exposed at 980 C and 0.0002 torr failed from intragranular oxidation. The remainder of the capsules completed the 96-hour tests. The depth of oxygen contamination was greater at 980 C than at 1260 C. Tests made at 0.0001 and 0.00001 torr levels caused large increases in the oxygen content of the T-111. Tests at 0.000001 torr or less produced no significant contamination. No lithium corrosion of the T-111 was observed under any of the conditions.

  20. Precision ozone calibration system based on vapor pressures of ozone

    NASA Technical Reports Server (NTRS)

    Mauersberger, K.; Hanson, D.; Morton, J.

    1987-01-01

    A precision ozone calibration system for stratospheric research has been developed and evaluated. Vapor pressures above solid ozone are mixed with a carrier gas (N2) to produce stratospheric ozone mixing ratios at total pressures of 1 to cover 20 torr. The uncertainty in the ozone mixing ratios is approximately + or - 1.5 percent, the stability of ozone is + or - 0.3 percent. Experiments to be calibrated may sample the gas mixture over a wide range of flow rates; the maximum throughput of gas with corrections of less than 1 percent to ozone is about 200 torr 1/min. A mass spectrometer system continuously monitors the purity and stability of the N2-O3 gas mixture.

  1. Pressure dependent resonant frequency of micromechanical drumhead resonators

    SciTech Connect

    Southworth, D. R.; Craighead, H. G.; Parpia, J. M.

    2009-05-25

    We examine the relationship between squeeze film effects and resonance frequency in drum-type resonators. We find that the resonance frequency increases linearly with pressure as a result of the additional restoring force contribution from compression of gas within the drum cavity. We demonstrate trapping of the gas by squeeze film effects and geometry. The pressure sensitivity is shown to scale inversely with cavity height and sound radiation is found to be the predominant loss mechanism near and above atmospheric pressure. Drum resonators exhibit linearity and sensitivity suitable to barometry from below 10 Torr up to several atmospheres.

  2. Study of crystallization kinetics of Se77.5Te15Sb7.5 glass using isoconversional models

    NASA Astrophysics Data System (ADS)

    Abdel-Rahim, M. A.; Hafiz, M. M.; Mahmoud, A. Z.

    2015-12-01

    The crystallization process of Se77.5Te15Sb7.5 glass is studied by differential scanning calorimetry (DSC) technique under non-isothermal conditions at various heating rates. The crystallization parameters are deduced using different models. The validity of the Johnson-Mehl-Avrami (JMA) model to describe the crystallization process for the studied composition is investigated. Comparing experimental and calculated DSC curves indicate that the crystallization process of Se77.5Te15Sb7.5 glass cannot satisfactorily be described by the JMA model. In general, simulation results indicate that the Sestak-Berggren model is more suitable to describe the crystallization kinetics. The crystalline phases are identified using the X-ray diffraction technique and scanning electron microscopy.

  3. Seal for permitting transfer of tape from one pressure region to a region of substantially different pressure

    DOEpatents

    Carter, H. Kennon; Mlekodaj, Ronald L.

    1977-01-01

    A seal is provided for allowing a thin flexible tape to be pulled from a high vacuum region (less than 10.sup.-.sup.6 torr) into atmospheric pressure. The tape first passes through a slit in an elastomer and thence through a pool of vacuum pump fluid into a differentially pumped volume. A second slit in an elastomer is the final seal element prior to exit of the tape to atmospheric pressure. The vacuum seal is utilized in a system for the rapid removal of samples, implanted in the surface of the tape, from a vacuum system to atmospheric pressure.

  4. Best Practice in Aboriginal and Torres Strait Islander Education. Proceedings of the Conference (Canberra, Australian Capital Territory, Australia, November 17-18, 1993).

    ERIC Educational Resources Information Center

    Australian National Languages and Literacy Inst., Deakin.

    Papers from the conference on the education of Australian Aborigines and Torres Strait Islanders include: "English Language and Numeracy Program for Aboriginal Students" (Alison Jarred); "The Aboriginal Identity Course: A Midstream Evaluation" (Simon Vaughan); "Making the Curriculum Your Own: The Senior Girls at Lajamanu School Read Glenyse Ward's…

  5. Epistemological Considerations for Approaching Teaching in an On-Line Environment Aboriginal and Torres Strait Islander Teacher Education Program: Reconsidering TPACK

    ERIC Educational Resources Information Center

    Lewthwaite, Brian Ellis; Knight, Cecily; Lenoy, Max

    2015-01-01

    This research inquiry explores teacher educator knowledge, understandings and beliefs informing their teaching in a web-based Australian teacher education program for Aboriginal and Torres Strait Islander students. Through the use of a phenomenologically aligned interview process, the study investigates instructors' consideration of practice for…

  6. Culture Matters. Community Report. Reporting on a Research Project To Explore Factors Affecting the Outcomes of Vocational Education and Training for Aboriginal and Torres Straits Islander People.

    ERIC Educational Resources Information Center

    Buchanan, Matthew; Egg, Mez

    The factors leading to positive outcomes in vocational education and training (VET) for Aboriginal and Torres Strait Islander people were examined through person-to-person and telephone interviews with indigenous Australian students and VET providers. The interviews focused on the following: the range of VET provision and the extent of its…

  7. Lidar-revised geologic map of the Wildcat Lake 7.5' quadrangle, Kitsap and Mason Counties, Washington

    USGS Publications Warehouse

    Tabor, Rowland W.; Haugerud, Ralph A.; Haeussler, Peter J.; Clark, Kenneth P.

    2011-01-01

    This map is an interpretation of a 6-ft-resolution (2-m-resolution) lidar (light detection and ranging) digital elevation model combined with the geology depicted on the Geologic Map of the Wildcat Lake 7.5' quadrangle, Kitsap and Mason Counties, Washington (Haeussler and Clark, 2000). Haeussler and Clark described, interpreted, and located the geology on the 1:24,000-scale topographic map of the Wildcat Lake 7.5' quadrangle. This map, derived from 1951 aerial photographs, has 20-ft contours, nominal horizontal resolution of approximately 40 ft (12 m), and nominal mean vertical accuracy of approximately 10 ft (3 m). Similar to many geologic maps, much of the geology in the Haeussler and Clark (2000) map-especially the distribution of surficial deposits-was interpreted from landforms portrayed on the topographic map. In 2001, the Puget Sound lidar Consortium obtained a lidar-derived digital elevation model (DEM) for Kitsap Peninsula including all of the Wildcat Lake 7.5' quadrangle. This new DEM has a horizontal resolution of 6 ft (2 m) and a mean vertical accuracy of about 1 ft (0.3 m). The greater resolution and accuracy of the lidar DEM compared to topography constructed from air photo stereo models have much improved the interpretation of geology in this heavily vegetated landscape, especially the distribution and relative age of some surficial deposits. Many contacts of surficial deposits are adapted unmodified or slightly modified from Haugerud (2009).

  8. Low Speed Technology for Small Turbine Development Reaction Injection Molded 7.5 Meter Wind Turbine Blade

    SciTech Connect

    David M. Wright; DOE Project Officer - Keith Bennett

    2007-07-31

    An optimized small turbine blade (7.5m radius) was designed and a partial section molded with the RIM (reaction-injection molded polymer) process for mass production. The intended market is for generic three-bladed wind turbines, 100 kilowatts or less, for grid-assist end users with rural and semi-rural sites, such as the farm/ranch market, having low to moderate IEC Class 3-4 wind regimes. This blade will have substantial performance improvements over, and be cheaper than, present-day 7.5m blades. This is made possible by the injection-molding process, which yields high repeatability, accurate geometry and weights, and low cost in production quantities. No wind turbine blade in the 7.5m or greater size has used this process. The blade design chosen uses a RIM skin bonded to a braided infused carbon fiber/epoxy spar. This approach is attractive to present users of wind turbine blades in the 5-10m sizes. These include rebladeing California wind farms, refurbishing used turbines for the Midwest farm market, and other manufacturers introducing new turbines in this size range.

  9. Nanoscale Charge Percolation Analysis in Polymer-Sorted (7,5) Single-Walled Carbon Nanotube Networks.

    PubMed

    Bottacchi, Francesca; Bottacchi, Stefano; Späth, Florian; Namal, Imge; Hertel, Tobias; Anthopoulos, Thomas D

    2016-08-01

    The current percolation in polymer-sorted semiconducting (7,5) single-walled carbon nanotube (SWNT) networks, processed from solution, is investigated using a combination of electrical field-effect measurements, atomic force microscopy (AFM), and conductive AFM (C-AFM) techniques. From AFM measurements, the nanotube length in the as-processed (7,5) SWNTs network is found to range from ≈100 to ≈1500 nm, with a SWNT surface density well above the percolation threshold and a maximum surface coverage ≈58%. Analysis of the field-effect charge transport measurements in the SWNT network using a 2D homogeneous random-network stick-percolation model yields an exponent coefficient for the transistors OFF currents of 16.3. This value is indicative of an almost ideal random network containing only a small concentration of metallic SWNTs. Complementary C-AFM measurements on the other hand enable visualization of current percolation pathways in the xy plane and reveal the isotropic nature of the as-spun (7,5) SWNT networks. This work demonstrates the tremendous potential of combining advanced scanning probe techniques with field-effect charge transport measurements for quantification of key network parameters including current percolation, metallic nanotubes content, surface coverage, and degree of SWNT alignment. Most importantly, the proposed approach is general and applicable to other nanoscale networks, including metallic nanowires as well as hybrid nanocomposites. PMID:27375031

  10. Induction of Oxidative Stress and Antioxidative Mechanisms in Arabidopsis thaliana after Uranium Exposure at pH 7.5

    PubMed Central

    Saenen, Eline; Horemans, Nele; Vanhoudt, Nathalie; Vandenhove, Hildegarde; Biermans, Geert; Van Hees, May; Wannijn, Jean; Vangronsveld, Jaco; Cuypers, Ann

    2015-01-01

    To evaluate the environmental impact of uranium (U) contamination, it is important to investigate the effects of U at ecologically relevant conditions. Since U speciation, and hence its toxicity, strongly depends on environmental pH, the present study aimed to investigate dose-dependent effects of U at pH 7.5. Arabidopsis thaliana plants (Mouse-ear Cress) were exposed for three days to different U concentrations at pH 7.5. In the roots, the increased capacities of ascorbate peroxidase and glutathione reductase indicate an important role for the ascorbate-glutathione cycle during U-induced stress. However, a significant decrease in the ascorbate redox state was observed after exposure to 75 and 100 µM U, indicating that those roots are severely stressed. In accordance with the roots, the ascorbate-glutathione cycle plays an important role in the antioxidative defence systems in A. thaliana leaves exposed to U at pH 7.5 as the ascorbate and glutathione biosynthesis were upregulated. In addition, small inductions of enzymes of the antioxidative defence system were observed at lower U concentrations to counteract the U-induced stress. However, at higher U concentrations it seems that the antioxidative defence system of the leaves collapses as reductions in enzyme activities and gene expression levels were observed. PMID:26042463