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  1. 78 FR 36016 - Requested Administrative Waiver of the Coastwise Trade Laws: Vessel OM; Invitation for Public...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-14

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Maritime Administration Requested Administrative Waiver of the Coastwise Trade Laws: Vessel OM; Invitation... of the vessel OM is: Intended Commercial Use of Vessel: ``6 Pack Sunset, harbor cruises,...

  2. 77 FR 41399 - EC&R O&M, LLC; Supplemental Notice That Initial Market-Based Rate Filing Includes Request for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-13

    ... Energy Regulatory Commission EC&R O&M, LLC; Supplemental Notice That Initial Market-Based Rate Filing...-referenced proceeding of EC&R O&M, LLC's application for market-based rate authority, with an accompanying... facilitate electronic service, persons with Internet access who will eFile a document and/or be listed as...

  3. OMS Annual Report, 1986.

    ERIC Educational Resources Information Center

    Association of Research Libraries, Washington, DC. Office of Management Studies.

    This report describes the following 1986 Office of Management Studies (OMS) programs and services: (1) the Academic Library Program, which includes the Management Review and Analysis Program, the Public Services Study, the Planning Program for Small Academic Libraries, the Collection Analysis Project, the Leadership Development Program, the…

  4. OMS Annual Report, 1985.

    ERIC Educational Resources Information Center

    Association of Research Libraries, Washington, DC. Office of Management Studies.

    This report describes the following 1985 Office of Management Studies (OMS) programs and services: (1) the Academic Library Program (ALP), which includes the Organizational Screening Program, the Collection Analysis Project (CAP), the Preservation Planning Program (PPP), the Public Services Study (PSS), the Management Review and Analysis Program…

  5. Two Papers on "Fag(sprog)lig Kommunikation" (Language for Specific Purposes). ROLIG-papir 46.

    ERIC Educational Resources Information Center

    Henriksen, Carol

    Two papers on "fag(sprog)lig Kommunikation"--languages for special purposes (LSP)--are presented. The first paper, in Danish, presents an alternative to the current structuralist oriented approach to the analysis of LSP as a kind of language in its own right and of texts written in this special kind of language. The approach is based on a more…

  6. Orbiter OMS and RCS technology

    NASA Technical Reports Server (NTRS)

    Boudreaux, R. A.

    1982-01-01

    Orbiter Orbital Maneuver Subsystem (OMS) and Reaction Control Subsystem (RCS) tankage has proved to be highly successful in shuttle flights on-orbit propellant transfer tests were done. Tank qualification tests along with flight demonstrations were carried out future uses of storable propellants are cited.

  7. OM300 Direction Drilling Module

    DOE Data Explorer

    MacGugan, Doug

    2013-08-22

    OM300 – Geothermal Direction Drilling Navigation Tool: Design and produce a prototype directional drilling navigation tool capable of high temperature operation in geothermal drilling Accuracies of 0.1° Inclination and Tool Face, 0.5° Azimuth Environmental Ruggedness typical of existing oil/gas drilling Multiple Selectable Sensor Ranges High accuracy for navigation, low bandwidth High G-range & bandwidth for Stick-Slip and Chirp detection Selectable serial data communications Reduce cost of drilling in high temperature Geothermal reservoirs Innovative aspects of project Honeywell MEMS* Vibrating Beam Accelerometers (VBA) APS Flux-gate Magnetometers Honeywell Silicon-On-Insulator (SOI) High-temperature electronics Rugged High-temperature capable package and assembly process

  8. On-Orbit Propulsion OMS/RCS

    NASA Technical Reports Server (NTRS)

    Hurlbert, Eric A.

    2001-01-01

    This slide presentation reviews the Space Shuttle's On-Orbit Propulsion systems: the Orbital Maneuvering System (OMS) and the Reaction Control System (RCS). The functions of each of the systems is described, and the diagrams of the systems are presented. The OMS/RCS thruster is detailed and a trade study comparison of non-toxic propellants is presented.

  9. ARL/OMS Consultant Training Program.

    ERIC Educational Resources Information Center

    Euster, Joanne R.

    1982-01-01

    Describes Academic Library Consultant Training Program begun in 1979, sponsored by Office of Management Studies (OMS) and designed to provide 80 consultants to aid academic libraries in improving performance. Viewpoints are included from OMS Director and participants concerning program objectives, trainee selection, workshops, internships, and the…

  10. Macrophage activation by OM-85 BV.

    PubMed

    Mauël, J

    1992-01-01

    Peritoneal or bone-marrow-derived murine macrophages were exposed for 24 h in vitro to dilutions of the bacterial extract OM-85 BV, in the presence or absence of other added compounds [macrophage-activating factor (MAF), recombinant murine interferon-gamma (IFN-gamma)]. Various metabolic responses and functional activities were then measured. Glucose oxidation through the hexose monophosphate shunt pathway was markedly stimulated in OM-85 BV-treated macrophages compared to control macrophages. Similarly, OM-85 BV primed macrophages for superoxide production upon triggering by phorbol myristate acetate. Both effects were further enhanced by simultaneous treatment of the cells with MAF with OM-85 BV. The bacterial extract also induced macrophages to release large amounts of nitrite (a marker of the activated state). As regards functional responses, coincubation with MAF and OM-85 BV activated macrophages to destroy target cells as well as intracellular microorganisms; in the latter case, similar results were obtained when MAF was replaced by IFN-gamma. In all these tests, the possibility that the observed effects were due to contamination of the bacterial extracts by endotoxin could be excluded. The above results indicate that OM-85 BV induces metabolic and functional properties in macrophages that are characteristic of the activated state and are important for host defence. PMID:1332156

  11. The O&M Personnel Shortage and University Training Programs.

    ERIC Educational Resources Information Center

    Wiener, William R.; Joffee, Elga

    1993-01-01

    Measures taken during the 1980s to increase the number of orientation and mobility (O&M) specialists to work with persons with visual impairments were evaluated, by means of a telephone survey of 15 university O&M programs. Survey findings indicated that efforts to address critical shortages in O&M personnel have been effective. (DB)

  12. 75 FR 20616 - Information Collection Request to Office of Management and Budget; OMB Control Numbers: 1625-0007...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-20

    ..., 2008 issue of the Federal Register (73 FR 3316). Information Collection Request 1. Title... vessels. An Operations Manual (OM) is also required for this type of facility. The OM establishes... regulation is contained in 33 CFR 154.110 and the OM regulations are contained in 33 CFR part 154 subpart...

  13. STS-39: OMS Pod Thruster Removal/Replace

    NASA Technical Reports Server (NTRS)

    1991-01-01

    Shown is the removal and replacement of the Discovery's orbital maneuvering systems (OMS) pod thruster. The OMS engine will be used to propel Discovery north, off of its previous orbital groundtrack, without changing the spacecraft's altitude. A burn with this lateral effect is known as "out-of-plane."

  14. Saccharomyces cerevisiae Porin Pore Forms Complexes with Mitochondrial Outer Membrane Proteins Om14p and Om45p

    PubMed Central

    Lauffer, Susann; Mäbert, Katrin; Czupalla, Cornelia; Pursche, Theresia; Hoflack, Bernard; Rödel, Gerhard; Krause-Buchholz, Udo

    2012-01-01

    Numerous transport processes occur between the two mitochondrial (mt) membranes due to the diverse functions and metabolic processes of the mt organelle. The metabolite and ion transport through the mt outer membrane (OM) is widely assumed to be mediated by the porin pore, whereas in the mt inner membrane (IM) specific carriers are responsible for transport processes. Here, we provide evidence by means of Blue Native (BN)-PAGE analysis, co-immunoprecipitation, and tandem affinity purification that the two mt OM proteins Om14p and Om45p associate with the porin pore. Porin molecules seem to assemble independently to build the core unit. A subpopulation of these core units interacts with Om14p and Om45p. With preparative tandem affinity purification followed by MS analysis, we could identify interaction partners of this OM complex, which are mainly localized within the mt IM and function as carriers for diverse molecules. We propose a model for the role of the two OM proteins in addressing the porin pore to bind to specific channels in the mt IM to facilitate transport of metabolites. PMID:22461620

  15. Selective hydrogenation of halogenated arenes using porous manganese oxide (OMS-2) and platinum supported OMS-2 catalysts.

    PubMed

    McManus, Iain J; Daly, Helen; Manyar, Haresh G; Taylor, S F Rebecca; Thompson, Jillian M; Hardacre, Christopher

    2016-07-01

    Porous manganese oxide (OMS-2) and platinum supported on OMS-2 catalysts have been shown to facilitate the hydrogenation of the nitro group in chloronitrobenzene to give chloroaniline with no dehalogenation. Complete conversion was obtained within 2 h at 25 °C and, although the rate of reaction increased with increasing temperature up to 100 °C, the selectivity to chloroaniline remained at 99.0%. Use of Pd/OMS-2 or Pt/Al2O3 resulted in significant dechlorination even at 25 °C and 2 bar hydrogen pressure giving a selectivity to chloroaniline of 34.5% and 77.8%, respectively, at complete conversion. This demonstrates the potential of using platinum group metal free catalysts for the selective hydrogenation of halogenated aromatics. Two pathways were observed for the analogous nitrobenzene hydrogenation depending on the catalyst used. The hydrogenation of nitrobenzene was found to follow a direct pathway to aniline and nitrosobenzene over Pd/OMS-2 in contrast to the OMS and Pt/OMS-2 catalysts which resulted in formation of nitrosobenzene, azoxybenzene and azobenzene/hydrazobenzene intermediates before complete conversion to aniline. These results indicate that for Pt/OMS-2 the hydrogenation proceeds predominantly over the support with the metal acting to dissociate hydrogen. In the case of Pd/OMS-2 both the hydrogenation and hydrogen adsorption occur on the metal sites. PMID:27095631

  16. OM-VPE grown materials for high efficiency solar cells

    NASA Technical Reports Server (NTRS)

    Saxena, R.; Cooper, B., III; Ludowise, M.; Borden, P.; Gregory, P.

    1980-01-01

    Organometallic sources are available for all the III-V elements and a variety of dopants; thus it is possible to use the technique to grow a wide variety of semiconductor compounds. AlGaAsSb and AlGaInAs alloys for multijunction monolithic solar cells were grown by OM-VPE. While the effort concentrated on terrestrial applications, the success of OM-VPE grown GaAs/AlGaAs concentrator solar cells (23% at 400 suns) demonstrates that OM-VPE is suitable for growing high efficiency solar cells in large quantities for space applications. In addition, OM-VPE offers the potential for substantial cost reduction of photovoltaic devices with scale up and automation and due to high process yield from reproducible, uniform epitaxial growths with excellent surface morphology.

  17. User documentation for the MSK and OMS intelligent tutoring systems

    NASA Technical Reports Server (NTRS)

    Fink, Pamela K.; Herren, L. Tandy; Lincoln, David T.

    1991-01-01

    This user's guide describes how to use the Intelligent Tutoring Systems for the Manual Select Keyboard (MSK) and the Orbital Maneuvering System (OMS) and how to use the C code that runs the mockup version of the MSK.

  18. Glow phenomenon surrounding the vertical stabilizer and OMS pods

    NASA Technical Reports Server (NTRS)

    1994-01-01

    This 35mm frame, photographed as the Space Shuttle Columbia was orbiting Earth during a 'night' pass, documents the glow phenomenon surrounding the vertical stabilizer and the Orbital Maneuvering System (OMS) pods of the spacecraft.

  19. OM-85 BV: primary versus secondary prevention.

    PubMed

    Collet, J P; Boissel, J P

    1994-01-01

    Recurrent upper respiratory tract infections in children have an important socioeconomic impact, with consequences on both the quality of life of the children, the possible medical sequelae and the inherent direct and indirect costs. The possibility to prevent these infections is limited in the absence of specific vaccines against microorganisms responsible for most of the respiratory tract infections (i.e. respiratory syncitial virus, adenovirus, rhinovirus). Immunoactive bacterial extracts that stimulate the nonspecific component of the immune system may protect against a large variety of microorganisms that enter the body by the oral and respiratory pathway; they may, therefore, play an important role with regard to this preventive action. OM-85 BV is an IBE that has been used in children who suffer from repeated infections to prevent the occurrence of new episodes (secondary prevention). In this condition, the drug has been shown to be effective in protecting children against recurrent airway infections. Its use as a primary preventive agent to prevent the development of repeated infections in children attending day-care centers (a very high-risk environment for repeated infections), however, did not show a similar efficacy. The risk of having > or = 4 episodes of upper respiratory tract infections over a period of 7.5 months was 26.7% in the verum group and 33.8% in the placebo group (relative risk 0.79, confidence interval 0.59-1.06]. In an exploratory analysis concentrating on the 3-month treatment period, however, a 48% reduction of the risk of presenting > or = 3 episodes was observed. Furthermore, this exploratory analysis showed a strong correlation between drug efficacy and age of the children.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:7800967

  20. 20 CFR 229.52 - Age reduction when a reduced age O/M is effective before DIB O/M.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 20 Employees' Benefits 1 2011-04-01 2011-04-01 false Age reduction when a reduced age O/M is effective before DIB O/M. 229.52 Section 229.52 Employees' Benefits RAILROAD RETIREMENT BOARD REGULATIONS... Minimum Rate § 229.52 Age reduction when a reduced age O/M is effective before DIB O/M. If an...

  1. 20 CFR 229.52 - Age reduction when a reduced age O/M is effective before DIB O/M.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Age reduction when a reduced age O/M is effective before DIB O/M. 229.52 Section 229.52 Employees' Benefits RAILROAD RETIREMENT BOARD REGULATIONS... Minimum Rate § 229.52 Age reduction when a reduced age O/M is effective before DIB O/M. If an...

  2. 20 CFR 229.52 - Age reduction when a reduced age O/M is effective before DIB O/M.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 20 Employees' Benefits 1 2013-04-01 2012-04-01 true Age reduction when a reduced age O/M is effective before DIB O/M. 229.52 Section 229.52 Employees' Benefits RAILROAD RETIREMENT BOARD REGULATIONS... Minimum Rate § 229.52 Age reduction when a reduced age O/M is effective before DIB O/M. If an...

  3. 20 CFR 229.52 - Age reduction when a reduced age O/M is effective before DIB O/M.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 20 Employees' Benefits 1 2014-04-01 2012-04-01 true Age reduction when a reduced age O/M is effective before DIB O/M. 229.52 Section 229.52 Employees' Benefits RAILROAD RETIREMENT BOARD REGULATIONS... Minimum Rate § 229.52 Age reduction when a reduced age O/M is effective before DIB O/M. If an...

  4. 20 CFR 229.52 - Age reduction when a reduced age O/M is effective before DIB O/M.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 20 Employees' Benefits 1 2012-04-01 2012-04-01 false Age reduction when a reduced age O/M is effective before DIB O/M. 229.52 Section 229.52 Employees' Benefits RAILROAD RETIREMENT BOARD REGULATIONS... Minimum Rate § 229.52 Age reduction when a reduced age O/M is effective before DIB O/M. If an...

  5. Solar PV O&M standards and best practices :

    SciTech Connect

    Klise, Geoffrey Taylor; Balfour, John R.; Keating, T. J.

    2014-11-01

    As greater numbers of photovoltaic (PV) systems are being installed, operations & maintenance (O&M) activities will need to be performed to ensure the PV system is operating as designed over its useful lifetime. To mitigate risks to PV system availability and performance, standardized procedures for O&M activities are needed to ensure high reliability and long-term system bankability. Efforts are just getting underway to address the need for standard O&M procedures as PV gains a larger share of U.S. generation capacity. Due to the existing landscape of how and where PV is installed, including distributed generation from small and medium PV systems, as well as large, centralized utility-scale PV, O&M activities will require different levels of expertise and reporting, making standards even more important. This report summarizes recent efforts made by solar industry stakeholders to identify the existing standards and best practices applied to solar PV O&M activities, and determine the gaps that have yet to be, or are currently being addressed by industry.

  6. 75 FR 61321 - Domestic Licensing of Production and Utilization Facilities; Updates to Incorporation by...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-05

    ... the BPV Code and the OM Code. See 68 FR 40469 (July 8, 2003). It should be noted that for this... 16, on June 2, 2009, 74 FR 26303. On the same date, the NRC published a parallel notice of availability of draft regulatory guides and opportunity for public comment. See 74 FR 26440. The NRC provided...

  7. OM Code Requirements For MOVs -- OMN-1 and Appendix III

    SciTech Connect

    Kevin G. DeWall

    2011-08-01

    The purpose or scope of the ASME OM Code is to establish the requirements for pre-service and in-service testing of nuclear power plant components to assess their operational readiness. For MOVs this includes those that perform a specific function in shutting down a reactor to the safe shutdown condition, maintaining the safe shutdown condition, and mitigating the consequences of an accident. This paper will present a brief history of industry and regulatory activities related to MOVs and the development of Code requirements to address weaknesses in earlier versions of the OM Code. The paper will discuss the MOV requirements contained in the 2009 version of ASME OM Code, specifically Mandatory Appendix III and OMN-1, Revision 1.

  8. Space Shuttle OMS engine valve technology. [Orbital Maneuvering System

    NASA Technical Reports Server (NTRS)

    Wichmann, H.

    1974-01-01

    Valve technology program to determine shutoff valve concepts suitable for the Orbital Maneuvering System (OMS) engine of the Space Shuttle. The tradeoff studies selected the electric torque motor operated dual poppet and ball valves as the most desirable valve concepts for the OMS Engine Shutoff Valve. A prototype of one of these concepts was built and subjected to a design verification program. A number of unique features were designed to include the required contamination insensitivity, operating fluid compatibility, decontamination capability, minimum maintenance requirement and long service life capability.

  9. Activities of the O&M committee history & future perspectives

    SciTech Connect

    Poulis, D.S.

    1996-12-01

    This paper gives an overview of the Committee on Operation and Maintenance of Nuclear Power Plants, hereafter referred to as the O&M Committee, formed in June 1975 when the American National Standard Institute`s Committee on Reactor Plants and their Maintenance was disbanded. The O&M Committee`s history, structure, current focus and future perspectives will be presented. The purpose of this paper is to give information to industry and the public of the Committee`s on-going effort to make accurate and timely responses to the needs of the nuclear industry.

  10. 43 CFR 426.23 - Recovery of operation and maintenance (O&M) costs.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... provide the district with supplemental and additional benefits. (e) Amount of O&M a district pays under a... 43 Public Lands: Interior 1 2011-10-01 2011-10-01 false Recovery of operation and maintenance (O&M... operation and maintenance (O&M) costs. (a) General. All new, amended, and renewed contracts shall...

  11. 43 CFR 426.23 - Recovery of operation and maintenance (O&M) costs.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... provide the district with supplemental and additional benefits. (e) Amount of O&M a district pays under a... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false Recovery of operation and maintenance (O&M... operation and maintenance (O&M) costs. (a) General. All new, amended, and renewed contracts shall...

  12. The Oms66 (p66) protein is a Borrelia burgdorferi porin.

    PubMed Central

    Skare, J T; Mirzabekov, T A; Shang, E S; Blanco, D R; Erdjument-Bromage, H; Bunikis, J; Bergström, S; Tempst, P; Kagan, B L; Miller, J N; Lovett, M A

    1997-01-01

    In this study we report the purification and characterization of a 66-kDa protein, designated Oms66, for outer membrane-spanning 66-kDa protein, that functions as a porin in the outer membrane (OM) of Borrelia burgdorferi. Oms66 was purified by fast-performance liquid chromatography and exhibited an average single-channel conductance of 9.62 +/- 0.37 nS in 1 M KCl, as evidenced by 581 individual insertional events in planar lipid bilayers. Electrophysiological characterization indicated that Oms66 was virtually nonselective between cations and anions and exhibited voltage-dependent closure with multiple substates. The amino acid sequence of tryptic peptides derived from purified Oms66 was identical to the deduced amino acid sequence of p66, a previously described surface-exposed protein of B. burgdorferi. Purified Oms66 was recognized by antiserum specific for p66 and serum from rabbits immune to challenge with virulent B. burgdorferi, indicating that p66 and Oms66 were identical proteins and that Oms66/p66 is an immunogenic protein in infected rabbits. In a methodology that reduces liposomal trapping and nonspecific interactions, native Oms66 was incorporated into liposomes, confirming that Oms66 is an outer membrane-spanning protein. Proteoliposomes containing Oms66 exhibited porin activity nearly identical to that of native, purified Oms66, indicating that reconstituted Oms66 retained native conformation. The use of proteoliposomes reconstituted with Oms66 and other Oms proteins provides an experimental system for determinating the relationship between conformation, protection, and biological function of these molecules. PMID:9284133

  13. New directions and challenges for the O&M committee

    SciTech Connect

    Pelletier, J.P.

    1996-12-01

    In the second half of the decade of the nineties, the imperative of finding new ways to improve efficiency while maintaining safety is taking on a new urgency. The looming deregulation of the electric industry and the expected competition in the power production business fuels this urgency. The recently completed ASME research in the area of Risk-Based Inservice Testing offers the Operations and Maintenance (O&M) Committee an opportunity to meet this challenge. This opportunity, however, offers its own challenges. New ways of thinking about inservice testing and new technical skills will be needed to successfully incorporate this technology into Code documents. It will not be adequate to rely solely on incorporation of risk-based methods into the Code to meet this challenge. A thorough self assessment of what O&M does, how it is done, and the value added will help assure that the directions which are pursued do, indeed, meet the challenge ahead.

  14. ISAL experiment documentation of vertical tail and OMS pods

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Investigation of Space Transportation System (STS) Atmospheric Luminosities (ISAL) experiment documentation includes vertical tail and orbital maneuvering system (OMS) pods with surface glow against the blackness of space. This glowing scene was provided by a long duration exposure with a 35mm camera aimed toward the tail of the Earth-orbiting Challenger, Orbiter Vehicle (OV) 099. OV-099 was maneuvered to a 120-nautical-mile altitude and flown with open payload bay (PLB) in the velocity vector for the conducting of a test titled, 'Evaluation of Oxygen Interaction with Materials (EOIM)'. Atomic oxygen within the low orbital environment is known to be extremely reactive when in contact with solid surfaces. In the darkened area between the camera and the glowing OMS pods and vertical stabilizer are two trays of test materials.

  15. EDITORIAL: Selected Papers from OMS'07, the 2nd Topical Meeting of the European Optical Society on Optical Microsystems (OMS)

    NASA Astrophysics Data System (ADS)

    Rendina, Ivo; Fazio, Eugenio; Ferraro, Pietro

    2008-06-01

    OMS'07 was the 2nd Topical Meeting of the European Optical Society (EOS) on Optical Microsystems (OMS). It was organized by the EOS in the frame of its international topical meeting activity, and after the success of the inaugural meeting was once again held in Italy, 30 September to 3 October 2007, amidst the wonderful scenery of the Island of Capri. The local organizing committee was composed of researchers from `La Sapienza' University in Rome and the National Council of Research (CNR) in Naples, Italy. A selected group of leading scientists in the field formed the international scientific committee. The conference was fully dedicated to the most recent advancements carried out in the field of optical microsystems. More then 150 scientists coming from five continents attended the conference and more than 100 papers were presented, organized into the following sessions: Photonic cystals and metamaterials Optofluidic microsystems and devices Optical microsystems and devices New characterization methods for materials and devices Application of optical systems Optical sources and photodetectors Optical resonators Nonlinear optic devices Micro-optical devices. Four keynote lecturers were invited for the Plenary sessions: Federico Capasso, Harvard University, USA; Bahram Javidi, University of Connecticut, USA (Distinguished Lecturer, Emeritus of LEOS--IEEE Society); Demetri Psaltis, EPFL, Lausanne, Switzerland; Ammon Yariv, California Institute of Technology, USA. Furthermore, 21 invited speakers opened each session of the conference with their talks. In addition a special session was organized to celebrate eighty years of the Isituto Nazionale di Ottica Applicata (INOA) of CNR. The special invited speaker for this session was Professor Theodor W Hänsch (Nobel Prize in Physics, 2005), who gave a lecture entitled `What can we do with optical frequency combs?' In this special issue of Journal of Optics A: Pure and Applied Optics, a selection of the most interesting

  16. Overall view of PLB and OMS / RCS engine thrusting

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Overall payload bay (PLB) view shows Inertial Upper Stage (IUS) Airborne Support Equipment (ASE) forward frame and aft frame tilt actuator (AFTA) table after IUS Tracking and Data Relay Satellite (TDRS) deploy. Vertical tail and Orbital Maneuvering System (OMS) pods with rear reaction control system (RCS) thruster firing (upfiring) appears in background against blackness of space. Right up jet firing was photographed from more than 18 meters (60 feet) away by crewmembers on flight deck.

  17. Overall view of PLB and OMS / RCS engine thrusting

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Overall payload bay (PLB) view shows Inertial Upper Stage (IUS) Airborne Support Equipment (ASE) forward frame and aft frame tilt actuator (AFTA) table after IUS Tracking and Data Relay Satellite (TDRS) deploy. Vertical tail and Orbital Maneuvering System (OMS) pods with rear reaction control system (RCS) thruster firing (sidefiring) appears in background against blackness of space. Right right jet firing was photographed from more than 18 meters (60 feet) away in the cabin of the Earth-orbiting Challenger, Orbiter Vehicle (OV) 099.

  18. Ultra-Wideband Optical Modulation Spectrometer (OMS) Development

    NASA Technical Reports Server (NTRS)

    Gardner, Jonathan (Technical Monitor); Tolls, Volker

    2004-01-01

    The optical modulation spectrometer (OMS) is a novel, highly efficient, low mass backend for heterodyne receiver systems. Current and future heterodyne receiver systems operating at frequencies up to a few THz require broadband spectrometer backends to achieve spectral resolutions of R approximately 10(exp 5) to 10(exp 6) to carry out many important astronomical investigations. Among these are observations of broad emission and absorption lines from extra-galactic objects at high redshifts, spectral line surveys, and observations of planetary atmospheres. Many of these lines are pressure or velocity broadened with either large half-widths or line wings extending over several GHz. Current backend systems can cover the needed bandwidth only by combining the output of several spectrometers, each with typically up to 1 GHz bandwidth, or by combining several frequency-shifted spectra taken with a single spectrometer. An ultra-wideband optical modulation spectrometer with 10 - 40 GHz bandwidth will enable broadband ob- servations without the limitations and disadvantages of hybrid spectrometers. Spectrometers like the OMS will be important for both ground-based observatories and future space missions like the Single Aperture Far-Infrared Telescope (SAFIR) which might carry IR/submm array heterodyne receiver systems requiring a spectrometer for each array pixel. Small size, low mass and small power consumption are extremely important for space missions. This report summarizes the specifications developed for the OMS and lists already identified commercial parts. The report starts with a review of the principle of operation, then describes the most important components and their specifications which were derived from theory, and finishes with a conclusion and outlook.

  19. O&M Best Practices - A Guide to Achieving Operational Efficiency (Release 2.0)

    SciTech Connect

    Sullivan, Gregory P.; Pugh, Ray; Melendez, Aldo P.; Hunt, W. D.

    2004-07-31

    This guide, sponsored by DOE's Federal Energy Management Program, highlights operations and maintenance (O&M) programs targeting energy efficiency that are estimated to save 5% to 20% on energy bills without a significant capital investment. The purpose of this guide is to provide the federal O&M energy manager and practitioner with useful information about O&M management, technologies, energy efficiency and cost-reduction approaches.

  20. 20 CFR 229.68 - Reduction of DIB O/M.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 20 Employees' Benefits 1 2010-04-01 2010-04-01 false Reduction of DIB O/M. 229.68 Section 229.68..., State, or Local Law or Plan § 229.68 Reduction of DIB O/M. A reduction for entitlement to worker's compensation or a public disability benefit is applied after the DIB O/M is reduced for age and the...

  1. 20 CFR 229.68 - Reduction of DIB O/M.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 20 Employees' Benefits 1 2011-04-01 2011-04-01 false Reduction of DIB O/M. 229.68 Section 229.68..., State, or Local Law or Plan § 229.68 Reduction of DIB O/M. A reduction for entitlement to worker's compensation or a public disability benefit is applied after the DIB O/M is reduced for age and the...

  2. 20 CFR 229.68 - Reduction of DIB O/M.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 20 Employees' Benefits 1 2013-04-01 2012-04-01 true Reduction of DIB O/M. 229.68 Section 229.68..., State, or Local Law or Plan § 229.68 Reduction of DIB O/M. A reduction for entitlement to worker's compensation or a public disability benefit is applied after the DIB O/M is reduced for age and the...

  3. 20 CFR 229.68 - Reduction of DIB O/M.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 20 Employees' Benefits 1 2014-04-01 2012-04-01 true Reduction of DIB O/M. 229.68 Section 229.68..., State, or Local Law or Plan § 229.68 Reduction of DIB O/M. A reduction for entitlement to worker's compensation or a public disability benefit is applied after the DIB O/M is reduced for age and the...

  4. 20 CFR 229.68 - Reduction of DIB O/M.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 20 Employees' Benefits 1 2012-04-01 2012-04-01 false Reduction of DIB O/M. 229.68 Section 229.68..., State, or Local Law or Plan § 229.68 Reduction of DIB O/M. A reduction for entitlement to worker's compensation or a public disability benefit is applied after the DIB O/M is reduced for age and the...

  5. Acides gras oméga-3 et dyslexie

    PubMed Central

    Zelcer, Michal; Goldman, Ran D.

    2015-01-01

    Résumé Question À la lumière de la hausse du nombre d’enfants d’âge scolaire ayant reçu un diagnostic de dyslexie, quel est le rôle des suppléments d’acides gras oméga-3 dans la prise en charge de cette affection? Réponse La dyslexie est le trouble d’apprentissage le plus répandu et elle est connue pour ses causes multifactorielles. De récentes données probantes pointent vers une corrélation entre le métabolisme défectueux des acides gras polyinsaturés et les troubles de neurodéveloppement, tels que la dyslexie. Bien que l’administration de suppléments d’acides gras oméga-3 aux enfants dyslexiques ait fait l’objet d’études, les données probantes sont limitées. Les critères diagnostiques homogènes de dyslexie, les mesures objectives de carence en acides gras et la surveillance étroite de l’apport alimentaire ne sont que quelques-uns des facteurs pouvant améliorer la qualité de la recherche dans ce domaine.

  6. 76 FR 15371 - Standards of Performance for New Stationary Sources and Emission Guidelines for Existing Sources...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-21

    ... action. This docket includes previous actions including the standards proposed on October 14, 2010 (75 FR 63260) and a supplemental notice issued on November 5, 2010 (75 FR 68296). All documents in the docket... Planning and Standards O&M Operation and Maintenance OMB Office of Management and Budget OP Office...

  7. Variations in the OM/OC ratio of urban organic aerosol next to a major roadway.

    PubMed

    Brown, Steven G; Lee, Taehyoung; Roberts, Paul T; Collett, Jeffrey L

    2013-12-01

    Understanding the organic matter/organic carbon (OM/OC) ratio in ambient particulate matter (PM) is critical to achieve mass closure in routine PM measurements, to assess the sources of and the degree of chemical processing organic aerosol particles have undergone, and to relate ambient pollutant concentrations to health effects. Of particular interest is how the OM/OC ratio varies in the urban environment, where strong spatial and temporal gradients in source emissions are common. We provide results of near-roadway high-time-resolution PM1 OM concentration and OM/OC ratio observations during January 2008 at Fyfe Elementary School in Las Vegas, NV, 18 m from the U.S. 95 freeway soundwall, measured with an Aerodyne high-resolution time-of-flight aerosol mass spectrometer (HR-AMS). The average OM/OC ratio was 1.54 (+/- 0.20 standard deviation), typical of environments with a low amount of secondary aerosol formation. The 2-min average OM/OC ratios varied between 1.17 and 2.67, and daily average OM/OC ratios varied between 1.44 and 1.73. The ratios were highest during periods of low OM concentrations and generally low during periods of high OM concentrations. OM/OC ratios were low (1.52 +/- 0.14, on average) during the morning rush hour (average OM = 2.4 microg/m3), when vehicular emissions dominate this near-road measurement site. The ratios were slightly lower (1.46 +/- 0.10) in the evening (average OM = 6.3 microg/m3), when a combination of vehicular and fresh residential biomass burning emissions was typically present during times with temperature inversions. The hourly averaged OM/OC ratio peaked at 1.66 at midday. OM concentrations were similar regardless of whether the monitoring site was downwind or upwind of the adjacent freeway throughout the day, though they were higher during stagnant conditions (wind speed < 0.5 m/sec). The OM/OC ratio generally varied more with time of day than with wind direction and speed. PMID:24558705

  8. The OMS3 JGrass-NewAge Environmental Modelling System

    NASA Astrophysics Data System (ADS)

    Formetta, G.; David, O.; Rigon, R.

    2012-12-01

    The need for integrated analysis, and the multiplicity of possible goals in analyses that require hydro-biophysical modelling, necessitates more than ever the capability of composing modelling solutions with parts of known quality, which are transparent to users and consist of reusable model components. Moreover, modern hydrological modelling requires interaction with GIS tools to allow visualizations and the data-processing necessary to synthesise knowledge from high volumes of inputs and outputs data. Last but not least, doing science that is reproducible has requirements that go beyond the computational issues to embrace the possibility to inspection the tools, and easy compare modelling solutions by third party groups. The JGrass-NewAge system was born in order to satisfy these requirements. It is based on the geographic information system uDig-JGrass, and is composed of two parts: (i) the system of visualization of the data and of the results based on uDig; (ii) the modelling components. The latter are implemented as OMS3 components which can be connected or excluded at runtime, according to the needs and works seamlessly inside the uDig Spatial Toolbox. The system is based on a hillslope-link geometrical partition of the landscape, thus the basic unit, where the water budget is evaluated, is the hillslope, and each one of them drains into a single associated link rather than cells or pixels. To this conceptual partition corresponds an implementation of informatics that uses vectorial features for channels, and raster data for hillslopes. The mass budget for each hillslope can be performed in two ways: according to a modification of Duffy dynamical model of hillslope runoff or according to HyMod lumped model. Differently from traditional rainfall-runoff models where the discharge is usually given at the outlet of a catchment, the discharge is evaluated in each link of the river network according to a procedure presented in Cuencas model. The system includes

  9. Farming Systems Modeling Using the Object Modeling System (OMS): Overview, Applications, and Future Plans

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Development of the Object Modeling System (OMS) modeling framework represents a comprehensive partnership between the USDA ARS/NRCS, USGS, and university collaborators. OMS helps streamline the development of integrated farming system models for current and future model delivery using a component-or...

  10. Porin activity of the native and recombinant outer membrane protein Oms28 of Borrelia burgdorferi.

    PubMed Central

    Skare, J T; Champion, C I; Mirzabekov, T A; Shang, E S; Blanco, D R; Erdjument-Bromage, H; Tempst, P; Kagan, B L; Miller, J N; Lovett, M A

    1996-01-01

    The outer membrane-spanning (Oms) proteins of Borrelia burgdorferi have been visualized by freeze-fracture analysis but, until recently, not further characterized. We developed a method for the isolation of B. burgdorferi outer membrane vesicles and described porin activities with single-channel conductances of 0.6 and 12.6 nS in 1 M KCI. By using both nondenaturing isoelectric focusing gel electrophoresis and fast-performance liquid chromatography separation after detergent solubilization, we found that the 0.6-nS porin activity resided in a 28-kDa protein, designated Oms28. The oms28 gene was cloned, and its nucleotide sequence was determined. The deduced amino acid sequence of Oms28 predicted a 257-amino-acid precursor protein with a putative 24-amino-acid leader peptidase I signal sequence. Processed Oms28 yielded a mature protein with a predicted molecular mass of 25,363 Da. When overproduced in Escherichia coli, the Oms28 porin fractionated in part to the outer membrane. Sodium dodecyl sulfate-polyacrylamide gel-purified recombinant Oms28 from E. coli retained functional activity as demonstrated by an average single-channel conductance of 1.1 nS in the planar lipid bilayer assay. These findings confirmed that Oms28 is a B. burgdorferi porin, the first to be described. As such, it is potential relevance to the pathogenesis of Lyme borreliosis and to the physiology of the spirochete. PMID:8759855

  11. EVALUATION OF AIRBORNE ASBESTOS CONCENTRATIONS BEFORE AND DURING AND O&M ACTIVITY: A CASE STUDY

    EPA Science Inventory

    The current lack of information regarding the impact of O&M activities on the potential for asbestos exposure to building staff and occupants prompted this study. This report presents a statistical evaluation of airborne asbestos data collected before and during an O&M activity i...

  12. Glow experiment documentation of OMS/RCS pods and vertical stabilizer

    NASA Technical Reports Server (NTRS)

    1982-01-01

    Glow experiment documentation of orbital maneuvering system (OMS) reaction control system (RCS) pods and vertical stabilizer shows chemoluminescent effect resulting from atomic oxygen impacting the spacecraft and building to the point that the atomic oxygen atoms combine to form molecules of oxygen. Image intensifier on NIKON 35mm camera used to record glow on vertical tail and OMS pods.

  13. Glow experiment documentation of OMS/RCS pods and vertical stabilizer

    NASA Technical Reports Server (NTRS)

    1982-01-01

    Glow experiment documentation of orbital maneuvering system (OMS) reaction control system (RCS) pods and vertical stabilizer shows chemo-luminescent effect resulting from atomic oxygen impacting the spacecraft and building to the point that the atomic oxygen atoms combine to form molecules of oxygen. Image intensifier on NIKON 35mm camera was used to record glow on vertical tail and OMS pods.

  14. Facilitating Successful Outdoor O&M Instruction of Multihandicapped Blind Travelers.

    ERIC Educational Resources Information Center

    Ehresman, Paul

    1994-01-01

    An orientation and mobility (O&M) instructor presents a case study of a blind 14 year old with mild cognitive deficits and emotional and behavioral problems. The case study demonstrates the importance of individualizing the O&M curriculum, including changing the usual sequence of instruction. (DB)

  15. The bacterial extract OM-85 BV protects mice against influenza and Salmonella infection.

    PubMed

    Bessler, Wolfgang G; Vor dem Esche, Ulrich; Masihi, Noel

    2010-09-01

    The bacterial extract OM-85 BV has been shown to provide protection against recurrent respiratory infections. We here investigated its efficacy against viral and bacterial infections in murine models. We first evaluated the role of OM-85 BV protecting from an A/PR/8/34 (H1N1) influenza virus infection. In a group treated with 1.75 mg/mouse OM-85 BV all animals survived, compared to 70% in the untreated control group and a group treated with a lower dosage. In addition, the appearance of clinical signs was delayed, their intensity was decreased, and they disappeared faster; also a marked increase in the influenza hemagglutination inhibition antibody level was observed. Since bacterial infections often superimpose viral lung infections, we also investigated on the protection of mice from a Salmonella typhimurium infection after the oral administration of OM-85 BV. Here, 100% of the OM-85 BV treated animals survived compared to 58% of the untreated control group. The mechanism of protection was further investigated: OM-85 BV acts, on the one hand, as an immunogen: the repeated administration of OM-85 BV induced a marked increase in serum antibody levels recognizing pathogenic bacterial strains. On the other hand, the extract acts as a stimulator of the nonspecific macrophage, monocyte, dendritic cell, and granulocyte response. Our findings demonstrate the antimicrobial activity of OM-85 BV against infections, as also has been shown in clinical studies. PMID:20601184

  16. Potential of front-face fluorescence to monitor OM reduction in drinking water during potabilization process

    NASA Astrophysics Data System (ADS)

    Lacotte, Pierre

    2014-05-01

    Elimination of OM in drinking water represents a great challenge for municipalities and technical actors to ensure that it can be safely used for consumption purposes. Indeed, current indicators such as Total Organic Carbon (TOC), turbidity or UV-Absorbance at 254 nm (UVA254) enable only non-specific overview of the amount of organic residuals in water. Fluorescence EEMs are a potent tool for discrimination and deep analysis of OM detailed composition and behaviour. It has been shown that several forms of OM co-exist in raw water, and come from various origins (bacteria, humic compounds…). Potabilization operation is composed of different steps that aim at decreasing all forms of OM using chemical as well as physical methods (ozone oxidation, filtration on activated carbon or sand, flocculation etc.). Unfortunately, it has been observed that reduction of OM during this process was not identical for all the forms, and the process showed a particular lack of efficiency during raining periods. 130 samples of water at various stages of potabilization were analyzed using home-made compact fluorometer, an apparatus composed of UV excitation LEDs. Using chemometrical treatment of spectral data, we put into highlight 5 different forms of OM that were identified according to litterature data. We evidenced the critical steps of the purification on OM reduction, as well as the relative content of each form from raw to product water. In particular, we showed that two forms were less reduced than the other three, so that progressive enrichment of total OM in the former was observed throughout the process. Moreover, a study was carried out in order to establish calibration models over conventional analyses using the spectral information. Highly satisfying models were thus obtained over TOC, turbidity and UVA254, with average RMSEC values of 13%, 7% and 16% respectively. These results demonstrate the potential of the fluorescence analyzer to simultaneously predict three major

  17. Clinical efficacy of OM-85 BV in COPD and chronic bronchitis: a systematic review.

    PubMed

    Sprenkle, Mark D; Niewoehner, Dennis E; MacDonald, Roderick; Rutks, Indulis; Wilt, Timothy J

    2005-03-01

    OM-85 BV is an immunomodulatory agent used for prevention of exacerbations in persons with chronic lung disease. We conducted a systematic review of OM-85 BV to evaluate its efficacy and safety. A systematic search for relevant articles was performed. Studies were included if they involved persons with chronic obstructive pulmonary disease or chronic bronchitis and were randomized to OM-85 BV or placebo. Investigators extracted data on study design, participant characteristics, and clinical outcomes. Thirteen trials involving 2066 individuals met inclusion criteria. Three trials enrolled an older, more homogenous population with chronic obstructive pulmonary disease. Utilizing quantitative pooled analysis in these studies, with one or more acute exacerbations as the endpoint, we found a non-statistically significant trend in favor of OM-85 BV [relative risk 0.83, 95% confidence interval 0.65-1.05]. Ten trials enrolled a heterogeneous population with chronic bronchitis. In these trials, exacerbation rates were less with OM-85 BV in 4 of 9 trials reporting this outcome. Varied results in the outcomes of hospitalization, symptom scores, and antibiotic or steroid use were found across studies. Withdrawals and adverse events were similar between OM-85 BV and placebo. While OM-85 BV is used to prevent exacerbations in persons with chronic lung disease, consistent evidence across multiple important outcomes does not exist to clearly demonstrate clinical benefit. Further randomized controlled trials enrolling large numbers of persons with well-defined COPD are necessary to confirm the effectiveness of this agent. PMID:17136978

  18. Capability and flight record of the versatile space shuttle OMS engine

    NASA Astrophysics Data System (ADS)

    Judd, D. Craig

    The development contract for Aerojet's Orbital Manuevering Subsystem (OMS) engine was awarded in February 1974. This paper provides a description of the OMS subcomponents along with a summary of the OMS development program and subsequent flight record. The major subcomponents include the platelet injector, regeneratively cooled chamber, radiation cooled nozzle extension, bipropellant valve, thrust mount, gimbal actuator assembly, and propellant feedlines. The OMS engine underwent an extensive development program between 1974 and 1978 that included approximately 3680 tests performed on 21 separate engines on components for a total duration of more than 19,000 seconds. This was followed with qualification testing of two engines with another 521 tests and 18,504 seconds of hot fire testing. The Space Shuttle system has completed 45 orbital flights with the OMS engines having fired a total of 356 times with a cumulative duration of 38,094 seconds. In all cases, the OMS engine has performed as required because of its maturity, simplicity, and built-in redundancy. Also described are the results of studies performed to increase the performance of the OMS engine either by using LOX/hydrocarbon propellants or by converting to a pump fed system to increase chamber pressure and area ratio.

  19. Wood source and pyrolysis temperature interact to control PyOM degradation rates

    NASA Astrophysics Data System (ADS)

    Bird, J. A.; Hatton, P. J.; Filley, T. R.; Chatterjee, S.; Auclerc, A.; Gormley, M.; Dastmalchi, K.; Stark, R. E.; Nadelhoffer, K. J.

    2015-12-01

    Surprisingly little is known about how shifts in tree species composition and increased forest fire frequency and intensity will affect one of the most stable pools of soil organic matter, i.e. the pyrogenic organic matter (PyOM or char). In a previous study, we showed that wood source and pyrolysis temperature interact to control PyOM structure and potential reactivity for two tree species common in high-latitude forests, jack pine (JP) and red maple (RM). Here, we investigate whether these differences affect PyOM turnover by examining the fates of 13C/15N-enriched JP wood and PyOM pyrolyzed at 300 (JP300) and 450 °C (JP450) and RM pyrolyzed at 450 °C (RM450). The substrates were applied 1-3 cm below the O/A interface of a well-drained Spodosol in a long-term forest fire study located at the University of Michigan Biological Station (Pellston, MI, USA). 13C-CO2effluxes from the first 996 days of decay showed a significant wood source by pyrolysis temperature interaction on PyOM field mineralisation rates, with RM450 mineralising twice faster than JP450 during the first 90 days. Increasing pyrolysis temperature substantially decreased field mineralization rates during the first 996 days, with mineralisation rates 24 and 80 times slower for JP300 and JP450 compared with JP wood. After 1 year, (i) bacterial groups were large sinks for PyOM-derived C as pyrolysis temperature increased and as substrate use efficiency decreased; (ii) potential phenol oxidase and net peroxidase activities were unaffected by the PyOM addition, although net peroxidase activities measured tended to lesser for soils amended with JP450 and RM450; and (iii) Collembola detritivores appeared less likely to be found for soils amended with JP450 and RM450. PyOM-derived C and N recoveries did not differ after 1 year; we will present 3-y recovery data. Our results suggest that the composition of angiosperms (e.g. RM) and gymnosperms (e.g. JP) in high-latitude forests is an underappreciated but

  20. A Best Practice for Developing Availability Guarantee Language in Photovoltaic (PV) O&M Agreements.

    SciTech Connect

    Klise, Geoffrey Taylor; Balfour, John

    2015-11-01

    This document outlines the foundation for developing language that can be utilized in an Equipment Availability Guarantee, typically included in an O&M services agreement between a PV system or plant owner and an O&M services provider, or operator. Many of the current PV O&M service agreement Availability Guarantees are based on contracts used for traditional power generation, which create challenges for owners and operators due to the variable nature of grid-tied photovoltaic generating technologies. This report documents language used in early PV availability guarantees and presents best practices and equations that can be used to more openly communicate how the reliability of the PV system and plant equipment can be expressed in an availability guarantee. This work will improve the bankability of PV systems by providing greater transparency into the equipment reliability state to all parties involved in an O&M services contract.

  1. Clinical experience with OM-85 BV in upper and lower respiratory tract infections.

    PubMed

    Derenne, J P; Delclaux, B

    1992-01-01

    The preventive effect of OM-85 BV on recurrent ENT and respiratory tract infections has been documented in a series of clinical trials. This article reviews the more significant controlled clinical trials investigating the efficacy and safety of OM-85 BV in airway infections. The literature reviewed covers all age groups. In summary, the administration of OM-85 BV was associated with a decrease in the number of acute exacerbations, with an increase in the number of patients remaining free from infections and with a decrease in antibiotic consumption. These results indicate the efficacy of oral immunostimulation with the bacterial extract OM-85 BV in all age groups and demonstrate its protective effect against recurrent airway infections. PMID:1439237

  2. Assessment of code improvements in the 1992, 1994, and 1996 addenda of the OM Code

    SciTech Connect

    DiBiasio, A.; Grove, E.

    1996-06-01

    NRC has initiated a rulemaking to 10CFR50.55a that would allow Owners to voluntarily update their pump and valve inservice testing programs to the 1995 Edition of the OM Code. The 1992 and 1994 Addenda, and 1995 Edition of the OM Code offers many improvements, eg, clarifications and relaxations, to the 1989 Edition of Section XI or the 1990 Edition of the OM Code. This paper reviews the code changes that may be advantageous for Owners to use, and discusses their related requirements. Additionally, code improvements in the newly issued 1996 Addenda of the OM Code are discussed, as they may be proposed under 10CFR50.55a(a)(3)(i).

  3. Remarkable promotion effect of trace sulfation on OMS-2 nanorod catalysts for the catalytic combustion of ethanol.

    PubMed

    Zhang, Jie; Zhang, Changbin; He, Hong

    2015-09-01

    OMS-2 nanorod catalysts were synthesized by a hydrothermal redox reaction method using MnSO4 (OMS-2-SO4) and Mn(CH3COO)2 (OMS-2-AC) as precursors. SO4(2-)-doped OMS-2-AC catalysts with different SO4(2-) concentrations were prepared next by adding (NH4)2SO4 solution into OMS-2-AC samples to investigate the effect of the anion SO4(2-) on the OMS-2-AC catalyst. All catalysts were then tested for the catalytic oxidation of ethanol. The OMS-2-SO4 catalyst synthesized demonstrated much better activity than OMS-2-AC. The SO4(2-) doping greatly influenced the activity of the OMS-2-AC catalyst, with a dramatic promotion of activity for suitable concentration of SO4(2-) (SO4/catalyst=0.5% W/W). The samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), inductively coupled plasma optical emission spectroscopy (ICP-OES), NH3-TPD and H2-TPR techniques. The results showed that the presence of a suitable amount of SO4(2-) species in the OMS-2-AC catalyst could decrease the Mn-O bond strength and also enhance the lattice oxygen and acid site concentrations, which then effectively promoted the catalytic activity of OMS-2-AC toward ethanol oxidation. Thus it was confirmed that the better catalytic performance of OMS-2-SO4 compared to OMS-2-AC is due to the presence of some residual SO4(2-) species in OMS-2-SO4 samples. PMID:26354694

  4. STS-26 Discovery, Orbiter Vehicle (OV) 103, OMS pod leak repair at KSC

    NASA Technical Reports Server (NTRS)

    1988-01-01

    At the Kennedy Space Center (KSC), Rockwell manufacturing engineering specialist Claude Willis (left) and Rockwell manufacturing supervisor George Gallagher begin installation of a 'clamshell' device in the left orbital maneuvering system (OMS) pod reaction control system (RCS) of Discovery, Orbiter Vehicle (OV) 103. Gallagher performed the OMS pod nitric acid oxidizer leak repair operation using the two newly cut access ports in the Orbiter's aft bulkhead.

  5. Neuro-cognitive aspects of "OM" sound/syllable perception: A functional neuroimaging study.

    PubMed

    Kumar, Uttam; Guleria, Anupam; Khetrapal, Chunni Lal

    2015-01-01

    The sound "OM" is believed to bring mental peace and calm. The cortical activation associated with listening to sound "OM" in contrast to similar non-meaningful sound (TOM) and listening to a meaningful Hindi word (AAM) has been investigated using functional magnetic resonance imaging (MRI). The behaviour interleaved gradient technique was employed in order to avoid interference of scanner noise. The results reveal that listening to "OM" sound in contrast to the meaningful Hindi word condition activates areas of bilateral cerebellum, left middle frontal gyrus (dorsolateral middle frontal/BA 9), right precuneus (BA 5) and right supramarginal gyrus (SMG). Listening to "OM" sound in contrast to "non-meaningful" sound condition leads to cortical activation in bilateral middle frontal (BA9), right middle temporal (BA37), right angular gyrus (BA 40), right SMG and right superior middle frontal gyrus (BA 8). The conjunction analysis reveals that the common neural regions activated in listening to "OM" sound during both conditions are middle frontal (left dorsolateral middle frontal cortex) and right SMG. The results correspond to the fact that listening to "OM" sound recruits neural systems implicated in emotional empathy. PMID:24845107

  6. Contribution of effluent organic matter (EfOM) to ultrafiltration (UF) membrane fouling: isolation, characterization, and fouling effect of EfOM fractions.

    PubMed

    Zheng, Xing; Khan, Muhammad Tariq; Croué, Jean-Philippe

    2014-11-15

    EfOM has been regarded as a major organic foulant resulting in UF membrane fouling in wastewater reclamation. To investigate fouling potential of different EfOM fractions, the present study isolated EfOM into hydrophobic neutrals (HPO-N), colloids, hydrophobic acids (HPO-A), transphilic neutrals and acids (TPI), and hydrophilics (HPI), and tested their fouling effect in both salt solution and pure water during ultrafiltration (UF). Major functional groups and chemical structure of the isolates were identified using Fourier transform infrared spectroscopy (FT-IR) and solid-state carbon nuclear magnetic resonance ((13)C NMR) analysis. The influence of the isolation process on the properties of EfOM fractions was minor because the raw and reconstituted secondary effluents were found similar with respect to UV absorbance, molecular size distribution, and fluorescence character. In membrane filtration tests, unified membrane fouling index (UMFI) and hydraulic resistance were used to quantify irreversible fouling potential of different water samples. Results show that under similar DOC level in feed water, colloids present much more irreversible fouling than other fractions. The fouling effect of the isolates is related to their size, chemical properties, and solution chemistry. Further investigations have identified that the interaction between colloids and other fractions also influences the performance of colloids in fouling phenomena. PMID:25173435

  7. Significant issues and changes for ANSI/ASME OM-1 1981, part 1, ASME OMc code-1994, and ASME OM Code-1995, Appendix I, inservice testing of pressure relief devices in light water reactor power plants

    SciTech Connect

    Seniuk, P.J.

    1996-12-01

    This paper identifies significant changes to the ANSI/ASME OM-1 1981, Part 1, and ASME Omc Code-1994 and ASME OM Code-1995, Appendix I, {open_quotes}Inservice Testing of Pressure Relief Devices in Light-Water Reactor Power Plants{close_quotes}. The paper describes changes to different Code editions and presents insights into the direction of the code committee and selected topics to be considered by the ASME O&M Working Group on pressure relief devices. These topics include scope issues, thermal relief valve issues, as-found and as-left set-pressure determinations, exclusions from testing, and cold setpoint bench testing. The purpose of this paper is to describe some significant issues being addressed by the O&M Working Group on Pressure Relief Devices (OM-1). The writer is currently the chair of OM-1 and the statements expressed herein represents his personal opinion.

  8. Droplet infiltration and OM composition of intact soil structural surfaces for studying mass exchange

    NASA Astrophysics Data System (ADS)

    Leue, Martin, ,, Dr.; Gerke, PD Horst H., ,, Dr.; Godow, Sophie Ch.; Ellerbrock, PD Ruth H., ,, Dr.

    2014-05-01

    During rapid percolation through macropores with local nonequilibrium conditions water and solute mass exchange with the porous matrix and sorption of reactive components is both taken place at the surface of preferential flow paths. Aggregate surfaces can be coated by illuviated clayey particles and biopores covered by plant residues or earthworm casts. By controlling wettability and sorption properties, the organic matter (OM) of surface coatings may also affect the transport properties of structured soils. Composition of OM in wall coatings was found spatially distributed at the mm-scale; thus, it remained unclear if water absorption by the soil matrix (i.e., mass exchange) was affected by locally-distributed OM. For samples with intact aggregate surfaces and biopore walls taken at clay-illuvial subsoil horizon of Luvisols developed from Loess and glacial till, the mm-scale spatial distribution of OM composition was measured using diffuse reflectance infrared spectroscopy (DRIFT). Spectra were analysed with respect to alkyl and carboxyl functional groups in OM to obtain an estimate for its potential wettability. The infiltration dynamic of water droplets was evaluated using contact angle measurements and droplet penetration time. The potential wettability of OM differed for coatings and burrow walls and was generally lower for the Loess-derived than for the till-derived samples. The droplet infiltration times were significantly lower only for the Loess Luvisol samples. The results suggest that mass exchange between flow path and matrix can be affected by OM composition of structural surfaces among other factors such as texture, moisture, and chemical status (pH).

  9. Reissner–Nordström Anti-de Sitter Black Holes in Mimetic F(R) Gravity

    NASA Astrophysics Data System (ADS)

    Oikonomou, V. K.

    2016-05-01

    In this paper we study under which conditions the Reissner-Nordstr\\"om-anti de Sitter black hole can be a solution of the vacuum mimetic $F(R)$ gravity with Lagrange multiplier and mimetic scalar potential. As we demonstrate, the resulting picture in the mimetic $F(R)$ gravity case, is different in comparison to the ordinary $F(R)$ gravity case, with the two descriptions resulting to a different set of constraints that need to hold true. We also investigate the metric perturbations in the mimetic $F(R)$ gravity case, for the Reissner-Nordstr\\"om-anti de Sitter black hole metric, at first order of the perturbed variables. Interestingly enough, the resulting equations are identical to the ones corresponding to the ordinary $F(R)$ gravity Reissner-Nordstr\\"om-anti de Sitter black hole, at least at first order. We attribute this feature to the particular form of the Reissner-Nordstr\\"om-anti de Sitter metric, and we speculate for which cases there could be differences between the mimetic and non-mimetic case. Since the perturbation equations are the same for the two cases, it is possible to have black hole instabilities in the mimetic $F(R)$ gravity case too, which can be interpreted as anti-evaporation of the black hole.

  10. Temperature & wood source control PyOM turnover in a Northern American forest

    NASA Astrophysics Data System (ADS)

    Hatton, Pierre-Joseph; Le Moine, James; Auclerc, Apolline; Gormley, Mark; Filley, Tim R.; Nadelhoffer, Knute J.; Bird, Jeff. A.

    2016-04-01

    Surprisingly little is known about how pyrolysis temperature and wood source affect the stability of forest-fire derived pyrogenic organic matter (PyOM). Here, we show that wood source and temperature affect in situ mineralization rates of PyOM in soils for two co-occurring gymnosperm (jack pine; JP [Pinus banksiana]) and angiosperm (red maple; RM [Acer rubrum])¬ species from North American boreal-temperate ecotones. We assess the effect of pyrolysis temperature on PyOM fates by following the decay of 13C/15N-enriched JP wood (JPwood) and PyOM produced at 300 °C (JP300) and 450 °C (JP450); and assess the effect of PyOM wood source by comparing fates of JP450 and RM450. JPwood mineralized 18× faster than JP300 and 44× faster than JP450 after 2.8y. RM450 mineralized initially faster than JP450 during the first ~2y, but became equivalent afterwards (1.1±0.2% of CO¬2 losses after 2.8y). Modeled turnover times suggest that this can be attributed to ~1% of fast-cycling PyOM (<3y). Slower-cycling pools are 12× faster for JPwood (13±5y) than for JP300 (157±28y) and 55× faster than for JP450 (700±229y). Modeled turnover times of the slow-cycling pools were equivalent for JP450 and RM450. The priming effect was positive for JPwood (0.10±0.05), neutral for JP300 (-0.02±0.04), and negative for JP450 (-0.15±0.03) and RM50 (-0.59±0.03). DOC losses were minimal compared with CO2 losses (DOC:CO2 ratio ≤0.005), but followed the same patterns: JPwood 6× greater than that of JP300 and 39× greater compared with JP450. After 1y, C recoveries were lower for JPwood than for PyOM, with no influence of pyrolysis temperature or wood source (yet); N recoveries did not differ. PLFA-(13)C data reveal that (i) treatments have similar microbial communities after 1y, (ii) JPwood is preferentially utilized by fungi, and (iii) bacteria increasingly utilize PyOM as pyrolysis temperature increases. Estimated carbon use efficiency decreased with increasing pyrolysis temperature

  11. Refined phylogenetic structure of an abundant East Asian Y-chromosomal haplogroup O*-M134.

    PubMed

    Ning, Chao; Yan, Shi; Hu, Kang; Cui, Yin-Qiu; Jin, Li

    2016-02-01

    The human Y-chromosome haplogroup O-M134 is one of the most abundant paternal lineages in East Asian populations, comprising ~13% of Han Chinese males, and also common in Kazakh, Korean, Japanese, Thai and so on. Despite its considerable prevalence, its current substructure is poorly resolved with only one downstream marker (M117) previously investigated. Here we address this deficiency by investigating some single-nucleotide polymorphisms (SNPs) previously reported being potentially associated with O-M134 based on high-throughput DNA-sequencing data. Using a panel of 1301 Chinese males we first identified 154 haplogroup O-M134 subjects. We then investigated the phylogenetic structure within this haplogroup using 10 SNPs (F444, F629, F3451, F46, F48, F209, F2887, F3386, F1739 and F152). Two major branches were identified, O-M117 and O-F444 and the latter was further divided into two main subclades, O-F629 and O-F3451, accounting for 10.84 and 0.92% of the Han Chinese, respectively. This update of O-M134 diversification permits better resolution of male lineages in population studies of East Asia. PMID:26306641

  12. Immunotherapy with an oral bacterial extract (OM-85 BV) for upper respiratory infections.

    PubMed

    Paupe, J

    1991-01-01

    The efficacy of Broncho-Vaxom/Imocur (OM-85 BV), an orally administered lyophilized bacterial extract, for recurrent respiratory and ear, nose and throat (ENT) infections was evaluated in 116 children aged 6 months to 19 years by comparing its activity in 61 children with that of a placebo in 55 children. The study was randomized, double-blind, and comprised a 90-day treatment period followed by a 90-day follow-up period without test drugs. Over the 180 days, 39.5% of patients taking OM-85 BV remained free from infection compared with 16.5% on placebo (p less than 0.01). 44% on OM-85 BV did not need antibiotics compared with 23.5% on placebo (p less than 0.05). These differences were even greater in the subgroup of children aged 6 years and less (34 vs. 3.5% for the absence of infections, p less than 0.01 and 37 vs. 10% for the need of antibiotics, p less than 0.05). Tolerance to OM-85 BV was excellent, and laboratory investigations showed no abnormalities attributable to this product. This work confirms that the immunomodulator OM-85 BV is an effective immunotherapy for recurrent respiratory and ENT infections in children. PMID:1745846

  13. Solar PV O&M Standards and Best Practices - Existing Gaps and Improvement Efforts

    SciTech Connect

    Klise, Geoffrey Taylor; Balfour, John R.; Keating, T. J.

    2014-11-01

    As greater numbers of photovoltaic (PV) systems are being installed, operations & maintenance (O&M) activities will need to be performed to ensure the PV system is operating as designed over its useful lifetime. To mitigate risks to PV system availability and performance, standardized procedures for O&M activities are needed to ensure high reliability and long-term system bankability. Efforts are just getting underway to address the need for standard O&M procedures as PV gains a larger share of U.S. generation capacity. Due to the existing landscape of how and where PV is installed, including distributed generation from small and medium PV systems, as well as large, centralized utility-scale PV, O&M activities will require different levels of expertise and reporting, making standards even more important. This report summarizes recent efforts made by solar industry stakeholders to identify the existing standards and best practices applied to solar PV O&M activities, and determine the gaps that have yet to be, or are currently being addressed by industry.

  14. O/M RATIO MEASUREMENT IN PURE AND MIXED OXIDE FULES - WHERE ARE WE NOW?

    SciTech Connect

    J. RUBIN; ET AL

    2000-12-01

    The oxygen-to-metal (O/M) ratio is one of the most critical parameters of nuclear fuel fabrication, and its measurement is closely monitored for manufacturing process control and to ensure the service behavior of the final product. Thermogravimetry is the most widely used method, the procedure for which has remained largely unchanged since its development some thirty years ago. It was not clear to us, however, that this method is still the optimum one in light of advances in instrumentation, and in the current regulatory environment, particularly with regard to waste management and disposal. As part of the MOX fuel fabrication program at Los Alamos, we conducted a comprehensive review of methods for O/M measurements in UO{sub 2}, PuO{sub 2} and mixed oxide fuels for thermal reactors. A concerted effort was made to access information not available in the open literature. We identified approximately thirty five experimental methods that (a) have been developed with the intent of measuring O/M, (b) provided O/M indirectly by suitable reduction of the measured data, or (c) could provide O/M data with suitable data reduction or when combined with other methods. We will discuss the relative strengths and weaknesses of these methods in their application to current routine and small-lot production environment.

  15. Influence of activated carbon preloading by EfOM fractions from treated wastewater on adsorption of pharmaceutically active compounds.

    PubMed

    Hu, Jingyi; Shang, Ran; Heijman, Bas; Rietveld, Luuk

    2016-05-01

    In this study, the preloading effects of different fractions of wastewater effluent organic matter (EfOM) on the adsorption of trace-level pharmaceutically active compounds (PhACs) onto granular activated carbon (GAC) were investigated. A nanofiltration (NF) membrane was employed to separate the EfOM by size, and two GACs with distinct pore structures were chosen for comparison. The results showed that preloading with EfOM substantially decreased PhAC uptake of the GACs; however, comparable PhAC adsorption capacities were achieved on GACs preloaded by feed EfOM and the NF-permeating EfOM. This indicates that: (1) the NF-rejected, larger EfOM molecules with an expectation to block the PhAC adsorption pores exerted little impact on the adsorbability of PhACs; (2) the smaller EfOM molecules present in the NF permeate contributed mainly to the decrease in PhAC uptake, mostly due to site competition. Of the two examined GACs, the wide pore-size-distributed GAC was found to be more susceptible to EfOM preloading than the microporous GAC. Furthermore, among the fourteen investigated PhACs, the negatively charged hydrophilic PhACs were generally subjected to a greater EfOM preloading impact. PMID:26891356

  16. Effects of the Bacterial Extract OM-85 on Phagocyte Functions and the Stress Response

    PubMed Central

    Baladi, S.; Kantengwa, S.; Donati, Y. R. A.; Polla, B. S.

    1994-01-01

    The effects of the bacterial extract OM-85 on the respiratory burst, intracellular calcium and the stress response have been investigated in human peripheral blood monocytes from normal donors. Activation of the respiratory burst during bacterial phagocytosis has been previously associated with heat shock/stress proteins synthesis. Whereas OM-85 stimulated superoxide production and increased Ca2+ mobilization, it fared to induce synthesis of classical HSPs. The lack of stress protein induction was observed even in the presence of iron which potentiates both oxidative injury and stress protein induction during bacterial phagocytosis. However OM-85 induced a 75–78 kDa protein, which is likely to be a glucose regulated protein (GRP78), and enhanced intracellular expression of interleukin-lβ precursor. PMID:18472933

  17. Effects of the Bacterial Extract OM-85 on Phagocyte Functions and the Stress Response.

    PubMed

    Baladi, S; Kantengwa, S; Donati, Y R; Polla, B S

    1994-01-01

    The effects of the bacterial extract OM-85 on the respiratory burst, intracellular calcium and the stress response have been investigated in human peripheral blood monocytes from normal donors. Activation of the respiratory burst during bacterial phagocytosis has been previously associated with heat shock/stress proteins synthesis. Whereas OM-85 stimulated superoxide production and increased Ca(2+) mobilization, it fared to induce synthesis of classical HSPs. The lack of stress protein induction was observed even in the presence of iron which potentiates both oxidative injury and stress protein induction during bacterial phagocytosis. However OM-85 induced a 75-78 kDa protein, which is likely to be a glucose regulated protein (GRP78), and enhanced intracellular expression of interleukin-lbeta precursor. PMID:18472933

  18. Distinct effects of Broncho-Vaxom (OM-85 BV) on gp130 binding cytokines

    PubMed Central

    Roth, M; Block, L

    2000-01-01

    BACKGROUND—Broncho-Vaxom (OM-85 BV) is known to support respiratory tract resistance to bacterial infections. In vivo and in vitro studies in animals and humans have shown that the action of the drug is based on the modulation of the host immune response, and it has been found to upregulate interferon γ (IFN-γ) and interleukin (IL)-2, IL-6, and IL-8. These immunomodulatory effects of the compound may explain its stimulation on T helper cells and natural killer cells. Following earlier findings that OM-85 BV induces the synthesis of IL-6, a study was undertaken to investigate its possible effect on other gp130 binding cytokines including IL-11, IL-12, leukaemia inhibitory factor (LIF), oncostatin M (OSM), and ciliary neutrophil factor (CNTF). Its modulation of the corresponding receptors of the above mentioned cytokines and of the signal transducer gp130 in human pulmonary fibroblasts and peripheral blood lymphocytes was also studied.
METHODS—Transcription of cytokines was assessed by Northern blot analysis. Secretion of cytokines was analysed using commercially available enzyme linked immunosorbent assay kits. Cytokine receptors and gp130 proteins were determined by Western blot analysis.
RESULTS—OM-85 BV increased the expression of IL-11 in human lung fibroblasts, but not in lymphocytes, in a dose and time dependent manner by maximal fivefold within 20 hours. The compound inhibited serum induced IL-12 expression in peripheral blood lymphocytes but did not induce OSM, LIF, or CNTF at any concentration. In lung fibroblasts the expression of the IL-6 receptor was enhanced fourfold at a concentration of 10 µg/ml OM-85 BV while that of the IL-11 receptor was not altered. In peripheral blood lymphocytes LIF receptor α expression was downregulated in the presence of 10 µg/ml OM-85 BV. At a concentration of 10 µg/ml OM-85 BV enhanced gp130 gene transcription fivefold and increased gp130 protein accumulation in cell membranes by 2.5times

  19. A double blind multicentre study of OM-8980 and auranofin in rheumatoid arthritis.

    PubMed Central

    Vischer, T L

    1988-01-01

    The therapeutic efficacy of the immunomodulator OM-8980 in rheumatoid arthritis was compared with that of auranofin, an oral gold salt, in a double blind, randomised multicentre study lasting six months. Seventy patients were treated with auranofin and 75 with OM-8980. The patients of both groups improved significantly at three and six months for all the clinical parameters observed: Ritchie index, number of swollen joints, morning stiffness, pain, grip strength, intake of non-steroidal anti-inflammatory drugs, and erythrocyte sedimentation rate. No serious side effects were observed in either group. The patients receiving auranofin had more adverse reactions, mainly affecting the gastrointestinal system. PMID:3041924

  20. Changes of O/M, dimension and microstructure of MOX pellet during heat treatment

    SciTech Connect

    Watanabe, M.; Kato, M.; Sunaoshi, T.

    2013-07-01

    The oxidation and reduction behaviors of sintered (Pu{sub 0.3}U{sub 0.7})O{sub 2-x} pellets have been studied at 1873 K under a controlled oxygen partial pressure. From the results of oxygen-to-metal (O/M) ratio changes, dimensional and structural changes, it was concluded that the crack nucleation-propagation and the local density change of pores were caused by the tensile and compressive stresses due to the O/M ratio distribution in the direction of the pellet radius. (authors)

  1. Non-Toxic Orbiter Maneuvering System (OMS) and Reaction Control System

    NASA Technical Reports Server (NTRS)

    Hurlbert, Eric A.; Nicholson, Leonard S. (Technical Monitor)

    1999-01-01

    NASA is pursuing the technology and advanced development of a non-toxic (NT) orbital maneuvering system (OMS) and reaction control system (RCS) for shuttle upgrades, RLV, and reusable first stages. The primary objectives of the shuttle upgrades program are improved safety, improved reliability, reduced operations time and cost, improved performance or capabilities, and commonality with future space exploration needs. Non-Toxic OMS/RCS offers advantages in each of these categories. A non-toxic OMS/RCS eliminates the ground hazards and the flight safety hazards of the toxic and corrosive propellants. The cost savings for ground operations are over $24M per year for 7 flights, and the savings increase with increasing flight rate up to $44M per year. The OMS/RCS serial processing time is reduced from 65 days to 13 days. The payload capability can be increased up to 5100 Ibms. The non-toxic OMS/RCS also provides improved space station reboost capability up to 20 nautical miles over the current toxic system of 14 nautical miles. A NT OMS/RCS represents a clear advancement in the SOA over MMH/NTO. Liquid oxygen and ethanol are clean burning, high-density propellants that provide a high degree of commonality with other spacecraft subsystems including life support, power, and thermal control, and with future human exploration and development of space missions. The simple and reliable pressure-fed design uses sub-cooled liquid oxygen at 250 to 350 psia, which allows a propellant to remain cryogenic for longer periods of time. The key technologies are thermal insulation and conditioning techniques are used to maintain the sub-cooling. Phase I successfully defined the system architecture, designed an integrated OMS/RCS propellant tank, analyzed the feed system, built and tested the 870 lbf RCS thrusters, and tested the 6000 lbf OMS engine. Phase 11 is currently being planned for the development and test of full-scale prototype of the system in 1999 and 2000

  2. Selective Activation of Human Dendritic Cells by OM-85 through a NF-kB and MAPK Dependent Pathway

    PubMed Central

    Scutera, Sara; Somma, Paolo; Salvi, Valentina; Musso, Tiziana; Tabbia, Giuseppe; Bardessono, Marco; Pasquali, Christian; Mantovani, Alberto; Sozzani, Silvano; Bosisio, Daniela

    2013-01-01

    OM-85 (Broncho-Vaxom®, Broncho-Munal®, Ommunal®, Paxoral®, Vaxoral®), a product made of the water soluble fractions of 21 inactivated bacterial strain patterns responsible for respiratory tract infections, is used for the prevention of recurrent upper respiratory tract infections and acute exacerbations in chronic obstructive pulmonary disease patients. OM-85 is able to potentiate both innate and adaptive immune responses. However, the molecular mechanisms responsible for OM-85 activation are still largely unknown. Purpose of this study was to investigate the impact of OM-85 stimulation on human dendritic cell functions. We show that OM-85 selectively induced NF-kB and MAPK activation in human DC with no detectable action on the interferon regulatory factor (IRF) pathway. As a consequence, chemokines (i.e. CXCL8, CXCL6, CCL3, CCL20, CCL22) and B-cell activating cytokines (i.e. IL-6, BAFF and IL-10) were strongly upregulated. OM-85 also synergized with the action of classical pro-inflammatory stimuli used at suboptimal concentrations. Peripheral blood mononuclear cells from patients with COPD, a pathological condition often associated with altered PRR expression pattern, fully retained the capability to respond to OM-85. These results provide new insights on the molecular mechanisms of OM-85 activation of the immune response and strengthen the rational for its use in clinical settings. PMID:24386121

  3. Selective activation of human dendritic cells by OM-85 through a NF-kB and MAPK dependent pathway.

    PubMed

    Parola, Carmen; Salogni, Laura; Vaira, Xenia; Scutera, Sara; Somma, Paolo; Salvi, Valentina; Musso, Tiziana; Tabbia, Giuseppe; Bardessono, Marco; Pasquali, Christian; Mantovani, Alberto; Sozzani, Silvano; Bosisio, Daniela

    2013-01-01

    OM-85 (Broncho-Vaxom®, Broncho-Munal®, Ommunal®, Paxoral®, Vaxoral®), a product made of the water soluble fractions of 21 inactivated bacterial strain patterns responsible for respiratory tract infections, is used for the prevention of recurrent upper respiratory tract infections and acute exacerbations in chronic obstructive pulmonary disease patients. OM-85 is able to potentiate both innate and adaptive immune responses. However, the molecular mechanisms responsible for OM-85 activation are still largely unknown. Purpose of this study was to investigate the impact of OM-85 stimulation on human dendritic cell functions. We show that OM-85 selectively induced NF-kB and MAPK activation in human DC with no detectable action on the interferon regulatory factor (IRF) pathway. As a consequence, chemokines (i.e. CXCL8, CXCL6, CCL3, CCL20, CCL22) and B-cell activating cytokines (i.e. IL-6, BAFF and IL-10) were strongly upregulated. OM-85 also synergized with the action of classical pro-inflammatory stimuli used at suboptimal concentrations. Peripheral blood mononuclear cells from patients with COPD, a pathological condition often associated with altered PRR expression pattern, fully retained the capability to respond to OM-85. These results provide new insights on the molecular mechanisms of OM-85 activation of the immune response and strengthen the rational for its use in clinical settings. PMID:24386121

  4. Development of a New O&M Clinical Competency Evaluation Tool and Examination of Validity and Reliability Evidence

    ERIC Educational Resources Information Center

    Renshaw, Rebecca L.

    2010-01-01

    The goal of this study was to create an evaluation tool that would be the new standard for evaluating clinical competencies of interns in the field of orientation and mobility (O&M). Using results from previous research in this area, specific competency skills were identified and the O&M Clinical Competency Evaluation Matrix (CCEM) was developed.…

  5. Effects of effluent organic matter (EfOM) on the removal of emerging contaminants by ozonation.

    PubMed

    Cai, Ming-Jhih; Lin, Yi-Pin

    2016-05-01

    Removal of emerging contaminants in wastewater treatment is essential to ensure the ecological health of the receiving water bodies. Ozonation is a promising technology to achieve this purpose but important wastewater characteristics affecting the optimal removal efficiency need to be elucidated. Secondary effluents contain effluent organic matter (EfOM), which can react directly with ozone as well as react as the initiator, promoter and inhibitor in the hydroxyl radical (.OH) chain reactions resulting from ozone decomposition. These different reaction modes of EfOM, coupled with alkalinity and pH value, collectively determine the ozone and .OH exposures and the degradation of pharmaceutical compounds by ozonation. In this study, we determined the rate constants of EfOM collected from two municipal wastewater treatment plants in terms of direct ozone reaction, initiation, promotion and inhibition at various pH values (pH 6.0-7.5) and temperatures (10-30 °C). The rate constants of direct reaction and initiation generally increased with the increasing pH value while the rate constants of promotion and inhibition did not vary significantly. All rate constants increased with the increasing temperature. The removal of ibuprofen, acetylsulfamethoxazole and metoprolol in diluted secondary effluent by ozonation can be fairly-well modeled by using the determined rate constants of EfOM. PMID:26950024

  6. Ortho-isopropoxyphenyl methylcarbamate (OMS-33) as a residual spray for control of anopheline mosquitos

    PubMed Central

    Wright, James W.; Fritz, Roy F.; Hocking, Kay S.; Babione, Robert; Gratz, Norman G.; Pal, Rajindar; Stiles, Alan R.; Vandekar, Milutin

    1969-01-01

    More than 1300 compounds have so far been included in the WHO Programme for Evaluating and Testing New Insecticides, which is designed to disclose compounds that may satisfactorily replace those to which insect vectors of disease have become resistant. The authors describe the successful passage of o-isopropoxyphenyl methylcarbamate (OMS-33) through the first 6 stages of the 7-stage programme that has been established for compounds intended for use against anopheline mosquitos and conclude that this product is suitable for testing in the final stage—large-scale epidemiological evaluation. In operational field trials (at 2 g/m2) OMS-33 has been shown capable of controlling Anopheles stephensi (in Iran), An. gambiae and An. funestus (in Nigeria) for 3-4 months, An. albimanus (in El Salvador) for 2-4 months and An. dthali (in Iran) for 2½ months. It has an airborne effect by which anophelines are killed for a considerable time after OMS-33 has been sprayed, even though they do not make contact with a sprayed surface; this quality would appear advantageous in areas where anophelines enter houses and bite man but do not rest long enough on sprayed surfaces to acquire a lethal dose of insecticide or where significant outdoor biting occurs. The observance of simple safety precautions protects occupants of sprayed houses, spraymen and others from danger. Chemical studies have indicated that commercially produced water-dispersible powders of OMS-33 are stable under field conditions of storage and use. PMID:5306320

  7. Bacterial extract OM-85 BV protects mice against experimental chronic rhinosinusitis

    PubMed Central

    Tao, Yanli; Yuan, Tiejun; Li, Xuechang; Yang, Shuqin; Zhang, Fanping; Shi, Li

    2015-01-01

    Objectives: To investigate the therapeutic effects of OM-85 BV as an adjunctive treatment on experimental chronic rhinosinusitis (CRS) in mice. Methodology: Female BALB/c mice aged 8-12 weeks were sensitized and administrated by intranasal Aspergillus fumigatis (AF) three times per week for 1 week, 3 weeks, 2 months and 3 months (n = 10 each time point). The mice were randomly and equally assigned to four groups: normal control group, model group, OM-85-BV plus amoxicillin group, and isolated amoxicillin group. Inflammatory changes were determined by hematoxylin-eosin (HE) staining. The expression levels of suppressor of cytokine signaling (SOCS) 1, SOCS3, tumor necrosis factor (TNF)-α, and interferon (IFN)-γ in samples were assessed by using real-time PCR (RT-PCR) and Western blotting. Results: There were significantly inflammatory and structural changes between the model and other groups. Compared to the model group, the mRNA expression levels of SOCS1, SOCS3, TNF-α, and IFN-γ were significantly decreased in OM-85-BV plus amoxicillin group and isolated amoxicillin group, along with the protein levels. Conclusion: The bacterial extract OM-85 BV is a low-cost alternatively adjunctive drug to treat CRS with simple oral administration, good safety, and few side effects. PMID:26261565

  8. Music Education through Popular Music Festivals: A Study of the "OM Music Festival" in Ontario, Canada

    ERIC Educational Resources Information Center

    Snell, Karen

    2005-01-01

    Most people think of the teaching and learning of music as taking place in formal, institutional contexts like schools and universities. This study looks at the transmission of music teaching and learning that takes place in a more informal, musical environment, namely at a "popular music festival." In particular, it discusses the OM music…

  9. Glow experiment documentation of OMS/RCS pod and vertical stabilizer

    NASA Technical Reports Server (NTRS)

    1982-01-01

    Glow experiment documentation of one of the orbital maneuvering system (OMS) reaction control system (RCS) pods and a portion of the vertical stabilizer shows chemoluminescent effectresulting from atomic oxygen impacting the spacecraft and building to the point that the atomic oxygen atoms combine to form molecules of oxygen. The Image Intensifier on NIKON 35mm camera was used to record the glow.

  10. Controlling O&M Costs of Advanced SMRs using Prognostics and Enhanced Risk Monitoring

    SciTech Connect

    Ramuhalli, Pradeep; Hirt, Evelyn H.; Coles, Garill A.; Meyer, Ryan M.; Coble, Jamie B.; Wood, Richard T.

    2014-02-25

    Advanced small modular reactors (AdvSMRs) can contribute to safe, sustainable, and carbon-neutral energy production. The economics of small reactors (including AdvSMRs) will be impacted by the reduced economy-of-scale savings when compared to traditional light water reactors. The most significant controllable element of the day-to-day costs involves operations and maintenance (O&M). Enhancing affordability of AdvSMRs through technologies that help control O&M costs will be critical to ensuring their practicality for wider deployment.A significant component of O&M costs is the management and mitigation of degradation of components due to their impact on planning maintenance activities and staffing levels. Technologies that help characterize real-time risk of failure of key components are important in this context. Given the possibility of frequently changing AdvSMR plant configurations, approaches are needed to integrate three elements – advanced plant configuration information, equipment condition information, and risk monitors – to provide a measure of risk that is customized for each AdvSMR unit and support real-time decisions on O&M. This article describes an overview of ongoing research into diagnostics/prognostics and enhanced predictive risk monitors (ERM) for this purpose.

  11. Solid-phase photocatalytic degradation of polyethylene film with manganese oxide OMS-2

    NASA Astrophysics Data System (ADS)

    Liu, Guanglong; Liao, Shuijiao; Zhu, Duanwei; Cui, Jingzhen; Zhou, Wenbing

    2011-01-01

    Solid-phase photocatalytic degradation of polyethylene (PE) film with cryptomelane-type manganese oxide (OMS-2) as photocatalyst was investigated in the ambient air under ultraviolet and visible light irradiation. The properties of the composite films were compared with those of the pure PE film through performing weight loss monitoring, IR spectroscopy, scanning electron microscopic (SEM) and X-ray photoelectron spectroscopy (XPS). The photoinduced degradation of PE-OMS-2 composite films was higher than that of the pure films, while there has been little change under the visible light irradiation. The weight loss of PE-OMS-2 (1.0 wt%) composite films steadily decreased and reached 16.5% in 288 h under UV light irradiation. Through SEM observation there were some cavities on the surface of composite films, but few change except some surface chalking phenomenon occurred in pure PE film. The degradation rate with ultraviolet irradiation is controllable by adjusting the content of OMS-2 particles in PE plastic. Finally, the mechanism of photocatalytic degradation of the composite films was briefly discussed.

  12. 43 CFR 426.23 - Recovery of operation and maintenance (O&M) costs.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 43 Public Lands: Interior 1 2012-10-01 2011-10-01 true Recovery of operation and maintenance (O&M... RECLAMATION, DEPARTMENT OF THE INTERIOR ACREAGE LIMITATION RULES AND REGULATIONS § 426.23 Recovery of... received irrigation water to the total amount of land in the district that received irrigation water;...

  13. 43 CFR 426.23 - Recovery of operation and maintenance (O&M) costs.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 43 Public Lands: Interior 1 2014-10-01 2014-10-01 false Recovery of operation and maintenance (O&M... RECLAMATION, DEPARTMENT OF THE INTERIOR ACREAGE LIMITATION RULES AND REGULATIONS § 426.23 Recovery of... received irrigation water to the total amount of land in the district that received irrigation water;...

  14. 43 CFR 426.23 - Recovery of operation and maintenance (O&M) costs.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 43 Public Lands: Interior 1 2013-10-01 2013-10-01 false Recovery of operation and maintenance (O&M... RECLAMATION, DEPARTMENT OF THE INTERIOR ACREAGE LIMITATION RULES AND REGULATIONS § 426.23 Recovery of... received irrigation water to the total amount of land in the district that received irrigation water;...

  15. Closeup of STS-26 Discovery, OV-103, orbital maneuvering system (OMS) leak

    NASA Technical Reports Server (NTRS)

    1988-01-01

    Closeup of STS-26 Discovery, Orbiter Vehicle (OV) 103, orbital maneuvering system (OMS) reaction control system (RCS) nitrogen tetroxide gas leak was captured by a Cobra borescope and displayed on a video monitor. The borescope has a miniature videocamera at the end of a flexible rubber tube and is able to be maneuvered into other inaccessible locations.

  16. Effect of Ginkgo leaf parenteral solution on blood and cochlea antioxidant and immunity indexes in OM rats.

    PubMed

    Zhao, Jiandong; Su, Yu; Chen, Aiting; Yuan, Hu; Liu, Liangfa; Wu, Wenming

    2011-01-01

    Oxidative stress is involved in the development and progression of otitis media (OM). In this study, we investigated the effect of Ginkgo leaf parenteral solution on blood and cochlea antioxidant and immunity indexs in OM rats. In OM model rats, blood and cochlea malondialdehyde (MDA), nitric oxide (NO), tumor necrosis factor-alpha (TNF-α), interleukin-1 beta (IL-1β), interleukin-6 (IL-6), interleukin-8 (IL-8) and interleukin-10 (IL-10) levels were significantly increased, whereas antioxidant enzymes activities (superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px) and glutathione reductase (GR)) were significantly decreased compared with normal rats. Treatment with Ginkgo leaf parenteral solution restored the altered parameters in a dose-dependent manner. We conclude that Ginkgo leaf parenteral solution confers protection against oxidative injuries in OM rats by increasing activities of antioxidants and immunity, suggesting a potential drug for the prevention and therapy of OM. PMID:22173336

  17. 78 FR 6098 - Agency Information Collection Activities; Submission to OMB for Review and Approval; Comment...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-29

    ... prescribed in 5 CFR 1320.12. On August 9, 2012 (77 FR 47631), EPA sought comments on this ICR pursuant to 5... year. This ICR assumes a constant growth rate in the respondent universe over the three-year period and... costs. The increase is due to a growth in the respondent universe subject to on- going O&M costs...

  18. Top Operations and Maintenance (O&M) Efficiency Opportunities at DoD/Army Sites - A Guide for O&M/Energy Managers and Practitioners

    SciTech Connect

    Sullivan, Gregory P.; Dean, Jesse D.; Dixon, Douglas R.

    2007-05-25

    This report, sponsored the Army's Energy Engineering Analysis Program, provides the Operations and Maintenance (O&M) Energy manager and practitioner with useful information about the top O&M opportunities consistently found across the DoD/Army sector. The target is to help the DoD/Army sector develop a well-structured and organized O&M program.

  19. Prevention of respiratory tract infections with bacterial lysate OM-85 bronchomunal in children and adults: a state of the art

    PubMed Central

    2013-01-01

    Respiratory tract infections (RTIs) are a leading cause of morbidity and also represent a cause of death in some parts of the world. The treatment of RTIs implies a continuous search for stronger therapies and represents an economical burden for health services and society. In this context the prevention of infections is absolutely required. The use of bacterial lysates as immuno-modulators to boost immunological response is widely debated. Aim of this review is to summarize the main clinical studies on the effect of the bacterial lysate OM-85 in treating RTIs in susceptible subjects - namely children and chronic obstructive pulmonary disease (COPD)-affected adults. Results from clinical trials and recent systematic reviews are reported. The results show that mean number of RTIs decreases upon treatment with OM-85, as measured by frequency of exacerbations or number of antibiotic courses. Data from systematic reviews indicated that OM-85 is particularly beneficial in children at high risk of RTIs. In COPD-affected adults, clinical studies showed that treatment with OM-85 reduced exacerbations, although systematic reviews did not legitimate the protective effect of OM-85 toward COPD as significant. The use of OM-85 could be efficacious in reducing exacerbation frequency of RTIs in children and adults at risk. However further high-quality studies are needed to better explain the mechanism of action and confirm the beneficial results of OM85. PMID:23692890

  20. Prevention of respiratory tract infections with bacterial lysate OM-85 bronchomunal in children and adults: a state of the art.

    PubMed

    De Benedetto, Fernando; Sevieri, Gianfranco

    2013-01-01

    Respiratory tract infections (RTIs) are a leading cause of morbidity and also represent a cause of death in some parts of the world. The treatment of RTIs implies a continuous search for stronger therapies and represents an economical burden for health services and society. In this context the prevention of infections is absolutely required. The use of bacterial lysates as immuno-modulators to boost immunological response is widely debated. Aim of this review is to summarize the main clinical studies on the effect of the bacterial lysate OM-85 in treating RTIs in susceptible subjects - namely children and chronic obstructive pulmonary disease (COPD)-affected adults. Results from clinical trials and recent systematic reviews are reported.The results show that mean number of RTIs decreases upon treatment with OM-85, as measured by frequency of exacerbations or number of antibiotic courses. Data from systematic reviews indicated that OM-85 is particularly beneficial in children at high risk of RTIs. In COPD-affected adults, clinical studies showed that treatment with OM-85 reduced exacerbations, although systematic reviews did not legitimate the protective effect of OM-85 toward COPD as significant.The use of OM-85 could be efficacious in reducing exacerbation frequency of RTIs in children and adults at risk. However further high-quality studies are needed to better explain the mechanism of action and confirm the beneficial results of OM85. PMID:23692890

  1. The OM series of terminal field-specific monoclonal antibodies demonstrate reinnervation of the adult rat dentate gyrus by embryonic entorhinal transplants.

    PubMed

    Woodhams, P L; Kawano, H; Raisman, G

    1992-01-01

    Monoclonal antibodies OM-1 to OM-4 and IM-1 [Woodhams et al. (1991) Neuroscience 46, 57-69] have complementary immunostaining patterns in the molecular (dendritic) layer of the adult rat dentate gyrus, with OM-1 to OM-4 selectively recognizing the outer (distal) two-thirds (i.e. the entorhinal afferent zone), and IM-1 the inner (proximal) one-third (i.e. the hippocampal commissural/associational zone). Immunoblotting suggests that OM-1 recognizes a single glycoprotein antigen of mol. wt around 93,000, and OM-2, OM-3, and OM-4 all recognize a second glycoprotein antigen of mol. wt around 36,000. At four weeks after removal of the ipsilateral entorhinal cortex the background OM immunostaining of the entorhinal afferent zone is abolished and replaced by a network of densely stained granules, which we interpret as degenerating entorhinal afferent axons. At the same time, the proximal, IM immunoreactive zone expands by about 10 microns in width (while the distal deafferented zone shrinks by about 80 microns). Attempts were made to restore the OM immunoreactivity of the distal zone by grafting either small pieces or cell suspensions of embryonic day 18 entorhinal cortex directly into the dentate molecular layer of entorhinally deafferented adult hosts. About half (14/26) of the animals with successfully positioned grafts showed restoration of OM-2 to OM-4 immunostaining throughout the entire width of the outer two-thirds (entorhinal afferent zone) of the dentate molecular layer. Strikingly, however, in adjacent serial sections the restoration of OM-1 immunoreactivity was restricted to the "middle" molecular layer, i.e. the most proximal part of the distal (entorhinal) two-thirds of the dentate molecular layer. In no case did the OM-1 immunoreactivity extend to the outer margin of the molecular layer. This did not appear to be associated with incompleteness of the removal of the host entorhinal projection, since it occurred in grafted cases where the hippocampus had been

  2. OM-85 BV upregulates the expression of adhesion molecules on phagocytes through a CD 14-independent pathway.

    PubMed

    Marchant, A; Goldman, M

    1996-04-01

    OM-85 BV is a preparation of bacterial extracts which proved to be of some efficacy in the prevention of respiratory tract infections. However, the mechanisms of action of this drug remain unclear. As we recently observed that OM-85 BV upregulates the expression of adhesion molecules on phagocytes, we took advantage of this property to determine whether the activating effects of OM-85 BV on monocytes and granulocytes depend on its interaction with CD14 molecules. Indeed, CD14 represents the major cell surface receptor for lipopolysaccharide and other bacterial products at the surface of leucocytes. First, we found that the upregulation of Mac-1 (CD11b/CD18) induced in vitro by OM-85 BV on monocytes was not blocked by an anti-CD14 monoclonal antibody (mAb) which inhibits monocyte responses to lipopolysaccharide. Similarly, the anti-CD14 mAb inhibited upregulation of Mac-1 on granulocytes when it was induced by lipopolysaccharide but not by OM-85 BV. To confirm that the effects of OM-85 on the expression of Mac-1 is CD14-independent, we analysed the responses of a patient with paroxysmal nocturnal haemoglobinuria, a disease associated with a defect of CD14 expression at the membrane of phagocytes. We found that monocytes and granulocytes of this patient displayed an impairment in Mac-1 upregulation in response to lipopolysaccharide whereas they responded normally to OM-85 BV. We conclude that OM-85 BV activates phagocytes through a CD14-independent pathway. The characterisation of the cell surface receptors of monocytes and granulocytes involved in the interactions with OM-85 BV might provide a molecular clue to the mode of action of this preparation of bacterial extracts. PMID:8894805

  3. Ornithodoros moubata complement inhibitor (OmCI) is an equally effective C5 inhibitor in pig and human1

    PubMed Central

    Barratt-Due, Andreas; Thorgersen, Ebbe Billman; Lindstad, Julie Katrine; Pharo, Anne; Lissina, Olga; Lambris, John D.; Nunn, Miles A.; Mollnes, Tom Eirik

    2011-01-01

    Experimental evidence suggests that C inhibition and more particularly combined inhibition of C and the TLR co-receptor CD14 may be of therapeutic benefit in sepsis and other inflammatory conditions. A barrier to the testing and further development of many inhibitors is that their activity is species specific. Pig is a relevant species for experimental models of human disease, and this study undertakes a comprehensive comparison of the inhibitory efficacy of the C5 inhibitor Ornithodoros moubata C inhibitor (OmCI) in human and porcine whole blood ex vivo models of Escherichia coli-induced sepsis. The effect of OmCI on complement activity in pigs undergoing E. coli sepsis was also examined. Porcine and human serum, and whole blood anticoagulated with lepirudin, was incubated with E. coli and the effect of OmCI investigated. The ex vivo results were virtually identical in pig and human. OmCI completely ablated the activity of all three C pathways at 0.64 μM. E. coli-induced C activation and expression of CD11b (wCD11R3 in the pig), was abolished ex vivo at 0.32 μM OmCI. Combining anti-CD14 and OmCI reduced the formation of IL-8 and TNF-α more potently than the single inhibitors. OmCI also efficiently bound E. coli-induced LTB4 in pig and human plasma. In support of our ex vivo findings, in vivo the activity of all C pathways was inhibited at 0.6 mg OmCI/kg pig. In conclusion, OmCI efficiently inhibited pig and human C activation, has accompanying anti-inflammatory effects, and is a promising candidate inhibitor for further in vivo studies of sepsis. PMID:21964028

  4. In vivo study of the immunomodulating activity of OM-85 using the plaque-forming cells technique (PFC) in mice.

    PubMed

    Mimouni, J; Ramsteiner, A; Fontanges, R

    1995-09-01

    The activity of increasing oral doses of the bacterial extract OM-85 was determined by using the plaque-forming cells assay in mice. The results showed that the oral administration of OM-85 significantly increased the number of splenic antibody-secreting cells against sheep red blood cells (antigen) compared with controls. A maximal response was reached between 400 and 800 mg/kg body weight, and was reproducible with the different batches of OM-85 used. This study indicates that the oral administration of the immunomodulator allows the activation of splenic B-lymphocytes, probably through the gut-associated lymphoid tissue. PMID:8582791

  5. Epitaxial thin film GaAs solar cells using OM-CVD techniques. [Organometallics

    NASA Technical Reports Server (NTRS)

    Stirn, R. J.; Wang, K. L.; Yeh, Y. C. M.

    1981-01-01

    A new approach has been initiated at JPL to fabricate thin-film, high efficiency GaAs solar cells on low-cost, single-crystal Si substrates having a thin CVD interlayer of Ge to minimize the lattice and thermal expansion mismatch. For initial experiments, n(+)/p GaAs cells were grown by OM-CVD on single-crystal GaAs and Ge wafers. Details of the growths and performance results will be presented. Subsequently, a combined epitaxial structure of OM-CVD GaAs on a strongly adherent Ge interlayer on (100) Si was grown. This is the first report of the successful growth of this composite structure. Low module costs projected by JPL SAMICS methodology calculations and the potential for 400-600W/kg space solar arrays will be discussed.

  6. A software framework for microarray and gene expression object model (MAGE-OM) array design annotation

    PubMed Central

    Qureshi, Matloob; Ivens, Alasdair

    2008-01-01

    Background The MIAME and MAGE-OM standards defined by the MGED society provide a specification and implementation of a software infrastructure to facilitate the submission and sharing of data from microarray studies via public repositories. However, although the MAGE object model is flexible enough to support different annotation strategies, the annotation of array descriptions can be complex. Results We have developed a graphical Java-based application (Adamant) to assist with submission of Microarray designs to public repositories. Output of the application is fully compliant with the standards prescribed by the various public data repositories. Conclusion Adamant will allow researchers to annotate and submit their own array designs to public repositories without requiring programming expertise, knowledge of the MAGE-OM or XML. The application has been used to submit a number of ArrayDesigns to the Array Express database. PMID:18366695

  7. Four years of immunization with OM-85 BV to prevent respiratory infections in HIV+ patients

    PubMed Central

    Capetti, Amedeo; Cossu, Maria Vittoria; Carenzi, Laura; Rizzardini, Giuliano

    2013-01-01

    We report an interventional, non-randomized experience of OM-85 BV immunization in a group of 104 HIV-infected subjects presenting recurrent seasonal respiratory bacterial infections. We compared the number of respiratory events, the use of antibiotics and the cost related to antibiotics before (2005–2006) and after (2008–2011) the introduction of such intervention. The year 2007 was excluded from the analysis since half of the patients were immunized in that year in an exploratory approach. Respiratory infections dropped in all groups but in subjects with recurrent otitis, leading to a reduction in the use of antibiotics. This is the first report of the effect of OM-85 BV in vivo in HIV-infected subjects. PMID:23792443

  8. Four years of immunization with OM-85 BV to prevent respiratory infections in HIV+ patients.

    PubMed

    Capetti, Amedeo; Cossu, Maria Vittoria; Carenzi, Laura; Rizzardini, Giuliano

    2013-09-01

    We report an interventional, non-randomized experience of OM-85 BV immunization in a group of 104 HIV-infected subjects presenting recurrent seasonal respiratory bacterial infections. We compared the number of respiratory events, the use of antibiotics and the cost related to antibiotics before (2005-2006) and after (2008-2011) the introduction of such intervention. The year 2007 was excluded from the analysis since half of the patients were immunized in that year in an exploratory approach. Respiratory infections dropped in all groups but in subjects with recurrent otitis, leading to a reduction in the use of antibiotics. This is the first report of the effect of OM-85 BV in vivo in HIV-infected subjects. PMID:23792443

  9. Columbia: The first five flights entry heating data series. Volume 2: The OMS Pod

    NASA Technical Reports Server (NTRS)

    Williams, S. D.

    1983-01-01

    Entry heating flight data and wind tunnel data on the OMS Pod are presented for the first five flights of the Space Shuttle Orbiter. The heating rate data are presented in terms of normalized film heat transfer coefficients as a function of angle-of-attack, Mach number, and normal shock Reynolds number. The surface heating rates and temperatures were obtained via the JSC NONLIN/INVERSE computer program. Time history plots of the surface heating rates and temperatures are also presented.

  10. Th1-orientated immunological properties of the bacterial extract OM-85-BV.

    PubMed

    Huber, M; Mossmann, H; Bessler, W G

    2005-05-20

    The bacterial extract OM-85-BV prepared from 21 pathogenic bacterial strains is administered orally to adults and children for the treatment and prevention of recurrent infections of the respiratory tract. We analyzed in vitro and in vivo the immunomodulatory effects of the extract. The lysate acted as a non specific macrophage activator, inducing NO production as well as the translocation of transcription factor NF-kappaB into the nucleus in murine bone marrow-derived macrophages. Besides stimulating unspecifically the immune system, a bacteria-specific humoral immune response was revealed. After oral application, a trend to increase bacteria-specific IgG and IgA in serum was observed. Also a marked increase of bacteria specific IgA in saliva as well as in supernatants of Peyer's patches and mesenteric lymph nodes-derived cell cultures was found. The immunomodulatory properties of the extract were also investigated with respect to shifting the Th1/Th2 bias in an in vivo allergy model. BALB/c mice were orally immunized with OM-85-BV and subsequently sensitized intraperitoneally with the allergen ovalbumin. The group pretreated with OM-85-BV showed a decrease of both total and ovalbumin specific IgE. Accordingly, in spleen cell supernatants the Th1-associated cytokine IFN-gamma was increased, and the Th2-associated cytokine IL-4 was downregulated. Our findings suggest that the immunoprotective effects of OM-85-BV observed in human beings may be correlated to its Th1 augmenting properties. PMID:15946922

  11. View of the starboard OMS pod of the STS-6 Challenger

    NASA Technical Reports Server (NTRS)

    1983-01-01

    This view centers on the starboard orbital maneuvering system (OMS) pod of the shuttle Challenger during its STS-6 mission. Two pieces of thermal protection system tile appear to have loosened. The view also shows one of the cargo bay television cameras, part of the extravehicular activity (EVA) slide wire system, three handrails and other features on the aft bulkhead. Part of the airborne support equipment (ASE) is in the lower right foreground.

  12. Use of OM-85 BV for the prevention of acute respiratory tract infections in occupational medicine.

    PubMed

    Carmona-Ramírez, M A; Alvárez-Gómez, V; Berber, A

    2002-01-01

    This study evaluated the safety and efficacy of the immunostimulatory agent OM-85 BV in 112 male car-factory workers who were highly susceptible to acute respiratory tract infections (ARTIs), each having experienced > or = 4 ARTIs during 1999. From January to March 2000, each worker received one capsule of OM-85 BV (7 mg) per day for 10 consecutive days each month. The patients were followed for a further 9 months. Mean number of ARTIs decreased from 8.2 +/- 2.1 per worker in 1999 to 5.3 +/- 2.9 in 2000; i.e. a difference of -2.9 (95% confidence intervals, -3.5 to -2.4). Similar effects were observed in men who had different job roles, and no adverse events were reported during drug administration. We concluded that OM-85 BV appears to be safe and effective in reducing the incidence of ARTIs in susceptible workers, although further double-blind, placebo-controlled clinical trials are required. PMID:12166352

  13. Cosmic age, statefinder, and Om diagnostics in the decaying vacuum cosmology

    SciTech Connect

    Tong, M. L.; Zhang, Y.

    2009-07-15

    As an extension of the cosmological constant model ({lambda}CDM), the decaying vacuum (DV) model describes dark energy as a varying vacuum whose energy density decays linearly with the Hubble parameter at late times, {rho}{sub {lambda}}(t){proportional_to}H(t), and produces the matter component. We examine the high-z cosmic age problem in the DV model, and compare it with {lambda}CDM and the Yang-Mills condensate (YMC) dark energy model. Without employing a dynamical scalar field for dark energy, these three models share a similar behavior of late-time evolution. It is found that the DV model, like the YMC, can accommodate the high-z quasar APM 08279+5255, thus greatly alleviating the high-z cosmic age problem. We also calculate the statefinder (r,s) and the Om diagnostics in the model. It is found that the evolutionary trajectories of r(z) and s(z) in the DV model are similar to those in the kinessence model, but are distinguished from those in {lambda}CDM and the YMC. The Om(z) in the DV model has a negative slope and its height depends on the matter fraction, while the YMC has a rather flat Om(z), whose magnitude depends sensitively on the coupling.

  14. Study on optics integrated manufacture technology based on Windows DNA-OM

    NASA Astrophysics Data System (ADS)

    Yu, Min; Yang, Li; Wang, Yong-jan

    2006-02-01

    As the shortcoming and insufficiency of CNC systems applied in optics manufacturing, a design and application based on Windows DNA-OM is presented. After introducing the prime principles and logic structures of Windows DNA-OM, a specific solution of optics integrated manufacture based on this framework is discussed in detail. In this solution, the OPC(OLE for Process Control) technology based on COM(Component Object Model) of Microsoft company is used for CNC equipment in the workshop, and this could provide a general interface for communication of hetero-structure CNC equipment of workshop and so all hetero-structure CNC can be accessed in a simple way. The experience and knowledge of optic manufacturing is stored and integrated in Windows DNA-OM Data part, this data part can guide optics manufacture. By completing this data part, an optics manufacture expert system can be realized. Then the prime characteristics of the integrated manufacture system are given. Finally this system is proved to has a good flexibility and opening, ease realizing, low cost and high feasibility.

  15. Determining the Spatial and Seasonal Variability in OM/OC Ratios across the U.S. Using Multiple Regression

    EPA Science Inventory

    Data from the Interagency Monitoring of Protected Visual Environments (IMPROVE) network are used to estimate organic mass to organic carbon (OM/OC) ratios across the United States by extending previously published multiple regression techniques. Our new methodology addresses com...

  16. Genome Sequence of Oenococcus oeni OM27, the First Fully Assembled Genome of a Strain Isolated from an Italian Wine.

    PubMed

    Lamontanara, Antonella; Orrù, Luigi; Cattivelli, Luigi; Russo, Pasquale; Spano, Giuseppe; Capozzi, Vittorio

    2014-01-01

    Oenococcus oeni OM27 is a strain selected from "Nero di Troia" wine undergoing spontaneous malolactic fermentation. "Nero di Troia" is a wine made from "Uva di Troia" grapes, an autochthonous black grape variety from the Apulian region (south of Italy). In this paper we present a 1.78-Mb assembly of the O. oeni OM27 genome, the first fully assembled genome of an O. oeni strain from an Italian wine. PMID:24994801

  17. Wd(a+) red blood cells in two sisters of a Hei//om Khoisan family in Namibia.

    PubMed

    Moores, P; Smart, E; Marks, M; Botha, M C

    1990-01-01

    Two sisters in a Hei//om family of the southern African Khoisan race in Namibia were found to have Wd(a+) red blood cells. Wda is a low-frequency antigen identified so far only in a European family in Canada and a family in Holland. The Wda gene may have had an independent origin in the Khoisan. Alternatively, the Hei//om population may have acquired it through miscegenation. PMID:2265851

  18. Stimulation of immunoprotective mechanisms by OM-85 BV. A review of results from in vivo and in vitro studies.

    PubMed

    Mauël, J

    1994-01-01

    OM-85 BV, an immunomodulating preparation containing extracts from eight commonly pathogenic bacterial species, has been used with success as an oral adjuvant in the prevention of respiratory tract infections. Results from in vitro and in vivo experiments suggest various mechanisms that can underlie this beneficial effect. Thus, exposure of murine macrophages in vitro to OM-85 BV led to stimulation of biochemical and functional parameters associated with the disposal of microorganisms and tumor cells. Similarly, blood-derived human phagocytes were stimulated to express adhesion molecules (LFA-1, MAC-1, p150,95, ICAM-1), to synthesize TNF-alpha and IL-2, and to develop a natural killer activity. These in vitro functions are reflected in the activation of immunological processes in vivo following administration of OM-85 BV per os. Oral treatment of mice and rabbits increased the capacity of the animals to clear bacteria from the blood, an effect that could be ascribed to enhanced functional activity of polymorphonuclear leukocytes. Administration of OM-85 BV per os also led to enhanced salivary IgA levels in man, and in gut and lung secretions in animals. Stimulation of migration and the beneficial effects of OM-85 BV correlated with phagocytosis-induced superoxide production in human bronchoalveolar lavage cells from orally treated individuals. Finally, injection of OM-85 BV was shown to enhance recovery from irradiation in animals, presumably by improving hemopoietic recovery. These findings indicate that OM-85 BV is capable of stimulating both cellular and humoral components of the immune response.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:7800969

  19. OM-FBA: Integrate Transcriptomics Data with Flux Balance Analysis to Decipher the Cell Metabolism

    PubMed Central

    Guo, Weihua; Feng, Xueyang

    2016-01-01

    Constraint-based metabolic modeling such as flux balance analysis (FBA) has been widely used to simulate cell metabolism. Thanks to its simplicity and flexibility, numerous algorithms have been developed based on FBA and successfully predicted the phenotypes of various biological systems. However, their phenotype predictions may not always be accurate in FBA because of using the objective function that is assumed for cell metabolism. To overcome this challenge, we have developed a novel computational framework, namely omFBA, to integrate multi-omics data (e.g. transcriptomics) into FBA to obtain omics-guided objective functions with high accuracy. In general, we first collected transcriptomics data and phenotype data from published database (e.g. GEO database) for different microorganisms such as Saccharomyces cerevisiae. We then developed a “Phenotype Match” algorithm to derive an objective function for FBA that could lead to the most accurate estimation of the known phenotype (e.g. ethanol yield). The derived objective function was next correlated with the transcriptomics data via regression analysis to generate the omics-guided objective function, which was next used to accurately simulate cell metabolism at unknown conditions. We have applied omFBA in studying sugar metabolism of S. cerevisiae and found that the ethanol yield could be accurately predicted in most of the cases tested (>80%) by using transcriptomics data alone, and revealed valuable metabolic insights such as the dynamics of flux ratios. Overall, omFBA presents a novel platform to potentially integrate multi-omics data simultaneously and could be incorporated with other FBA-derived tools by replacing the arbitrary objective function with the omics-guided objective functions. PMID:27100883

  20. Chromosomal and Genetic Analysis of a Human Lung Adenocarcinoma Cell Line OM

    PubMed Central

    Li, Yong-Wu; Bai, Lin; Dai, Lyu-Xia; He, Xu; Zhou, Xian-Ping

    2016-01-01

    Background: Lung cancer has become the leading cause of death in many regions. Carcinogenesis is caused by the stepwise accumulation of genetic and chromosomal changes. The aim of this study was to investigate the chromosome and gene alterations in the human lung adenocarcinoma cell line OM. Methods: We used Giemsa banding and multiplex fluorescence in situ hybridization focusing on the human lung adenocarcinoma cell line OM to analyze its chromosome alterations. In addition, the gains and losses in the specific chromosome regions were identified by comparative genomic hybridization (CGH) and the amplifications of cancer-related genes were also detected by polymerase chain reaction (PCR). Results: We identified a large number of chromosomal numerical alterations on all chromosomes except chromosome X and 19. Chromosome 10 is the most frequently involved in translocations with six different interchromosomal translocations. CGH revealed the gains on chromosome regions of 3q25.3-28, 5p13, 12q22-23.24, and the losses on 3p25-26, 6p25, 6q26-27, 7q34-36, 8p22-23, 9p21-24, 10q25-26.3, 12p13.31-13.33 and 17p13.1-13.3. And PCR showed the amplification of genes: Membrane metalloendopeptidase (MME), sucrase-isomaltase (SI), butyrylcholinesterase (BCHE), and kininogen (KNG). Conclusions: The lung adenocarcinoma cell line OM exhibited multiple complex karyotypes, and chromosome 10 was frequently involved in chromosomal translocation, which may play key roles in tumorigenesis. We speculated that the oncogenes may be located at 3q25.3-28, 5p13, 12q22-23.24, while tumor suppressor genes may exist in 3p25-26, 6p25, 6q26-27, 7q34-36, 8p22-23, 9p21-24, 10q25-26.3, 12p13.31-13.33, and 17p13.1-13.3. Moreover, at least four genes (MME, SI, BCHE, and KNG) may be involved in the human lung adenocarcinoma cell line OM. PMID:26879013

  1. Epitaxial and polycrystalline GaAs solar cells using OM-CVD techniques

    NASA Technical Reports Server (NTRS)

    Yeh, Y. C. M.; Wang, K. L.; Shin, B. K.; Stirn, R. J.

    1980-01-01

    GaAs epitaxial films were grown by chemical vapor deposition using organo-metallic sources (OM-CVD) on single crystal and polycrystalline bulk GaAs, as well as on bulk polycrystalline and recrystallized thin-film Ge substrates. Details of Antireflecting Metal-Oxide-Semiconductor (AMOS) solar cells fabricated on GaAs films grown on bulk polycrystalline Ge and recrystallized Ge thin-film substrates will be discussed, as well as preliminary photovoltaic results obtained for n(+)/p homojunction structures.

  2. Summary of LO2/Ethanol OMS/RCS Technology and Advanced Development 99-2744

    NASA Technical Reports Server (NTRS)

    Curtis, Leslie A.; Hurlbert, Eric A.

    1999-01-01

    NASA is pursuing non-toxic propellant technologies applicable to RLV and Space Shuttle orbital maneuvering system (OMS) and reaction control system (RCS). The primary objectives of making advancements in an OMS/RCS system are improved safety, reliability, and reduced operations and maintenance cost, while meeting basic operational and performance requirements. An OMS/RCS has a high degree of direct interaction with the vehicle and crew and requires subsystem and components that are compatible with integration into the vehicle with regard to external mold-line, power, and thermal control. In July 1997, a Phase I effort for the technology and advanced development of an upgrade of the space shuttle was conducted to define the system architecture, propellant tank, feed system, RCS thrusters, and OMS engine. Phase I of the project ran from July 1997 to October 1998. Phase II is currently being planned for the development and test of full-scale prototype of the system in 1999 and 2000. The choice of pressure-fed liquid oxygen (LO2) and ethanol is the result of numerous trade studies conducted from 1980 to 1996. Liquid oxygen and ethanol are clean burning, high-density propellants that provide a high degree of commonality with other spacecraft subsystems including life support, power, and thermal control, and with future human exploration and development of space missions. The key to this pressure-fed system is the use of subcooled liquid oxygen at 350 psia. In this approach, there is 80 degrees R of subcooling, which means that boil-off will not occur until the temperature has risen 80 R. The sub-cooling results naturally from loading propellants at 163 R, which is the saturation temperature at 14.7 psia, and then pressurizing to 350 psia on the launch pad. Thermal insulation and conditioning techniques are then used to limit the LO2 temperature to 185 R maximum, and maintain the sub-cooling. The other key is the wide temperature range of ethanol, -173 F to +300 F, which

  3. PLB, vertical tail, OMS pods above Earth with moon in distant background

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Payload bay (PLB) equipment, payloads, and experiments include remote manipulator system (RMS) stowed on port side sill longeron, Development Flight Instrument (DFI) pallet with High Capacity Heat Pipe Experiment, Special Philatelic Covers in two large storage (mail) boxes, Evaluation of Oxygen Interaction with Materials (EOIM) experiment trays, and Advanced Flexible Reusable Surface Insulation (AFRSI) blanket in foreground and Payload Flight Test Article (PFTA) behind DFI pallet. Vertical tail with orbital maneuvering system (OMS) pods at base points to Earth's cloud-covered surface with gibbous moon in distance.

  4. Effects of OM-85 BV in patients with chronic obstructive pulmonary disease: A systematic review and meta-analysis.

    PubMed

    Pan, Lei; Jiang, Xue-Ge; Guo, Jun; Tian, Yuan; Liu, Chang-Ting

    2015-10-01

    This study aimed to identify the effects of OM-85 BV in patients with chronic obstructive pulmonary disease (COPD). PubMed, Embase, CINAHL, and ClinicalTrials.gov were searched for eligible randomized controlled trials (RCTs). The major end point was exacerbation rate, and the minor end points included duration of hospitalization, severity of acute exacerbation, incidence rate of patients using antibiotics, and adverse events. All data were derived with relative risks (RRs) and weighted mean differences. Five RCTs with 1190 patients were enrolled in the meta-analysis. OM-85 BV was associated with 20% and 39% reductions in exacerbation rate (RR, 0.80; 95% confidence interval [CIs], 0.65-0.97; P = .03) and incidence rate of patients using antibiotics (RR, 0.61; 95%CI, 0.48-0.77; P < .0001) compared with the placebo. However, OM-85 BV was not significantly associated with duration of hospitalization, severity of acute exacerbation, and total adverse events. Current evidence supporting the benefits of OM-85 BV to COPD patients is inadequate. Further larger-scale trials must be conducted to validate our findings and the efficacy of OM-85 BV in COPD patients. PMID:25903441

  5. Complete genome and comparative analysis of the chemolithoautotrophic bacterium Oligotropha carboxidovorans OM5

    PubMed Central

    2010-01-01

    Background Oligotropha carboxidovorans OM5 T. (DSM 1227, ATCC 49405) is a chemolithoautotrophic bacterium capable of utilizing CO (carbon monoxide) and fixing CO2 (carbon dioxide). We previously published the draft genome of this organism and recently submitted the complete genome sequence to GenBank. Results The genome sequence of the chemolithoautotrophic bacterium Oligotropha carboxidovorans OM5 consists of a 3.74-Mb chromosome and a 133-kb megaplasmid that contains the genes responsible for utilization of carbon monoxide, carbon dioxide, and hydrogen. To our knowledge, this strain is the first one to be sequenced in the genus Oligotropha, the closest fully sequenced relatives being Bradyrhizobium sp. BTAi and USDA110 and Nitrobacter hamburgiensis X14. Analysis of the O. carboxidovorans genome reveals potential links between plasmid-encoded chemolithoautotrophy and chromosomally-encoded lipid metabolism. Comparative analysis of O. carboxidovorans with closely related species revealed differences in metabolic pathways, particularly in carbohydrate and lipid metabolism, as well as transport pathways. Conclusion Oligotropha, Bradyrhizobium sp and Nitrobacter hamburgiensis X14 are phylogenetically proximal. Although there is significant conservation of genome organization between the species, there are major differences in many metabolic pathways that reflect the adaptive strategies unique to each species. PMID:20863402

  6. Single and multijunction space solar cells grown by organometallic vapor phase epitaxy (OM-VPE)

    SciTech Connect

    Borden, P.G.; Gregory, P.E.; Larue, R.A.; Ludowise, M.J.

    1982-08-01

    Organometallic Vapor Phase Epitaxy (OM-VPE) is a versatile technique for growing III-V compound semiconductor solar cells. It has good uniformity and morphology, control that allows growth of extremely thin layers, and is a technique readily automated. The vehicle for the present discussion is a metal interconnected cascade (MIC/sup 2/) solar cell that has achieved 16.6% AM0 and 22% AM3 efficiency (uncorrected for 14% grid coverage). These are the best results reported to date for a cascade solar cell. Features include a 9-layer epitaxial structure, the thinnest of which is less than 1000 thick, a high-efficiency 30% AlGaAs top cell only 1.5 microns thick, a GaAs bottom cell that has survived the 780/sup 0/C, 20-minute top cell growth, and process yields greater than 4 cm/sup 2/ per wafer. The paper describes the cell design requirements, how it was grown by OM-VPE, and performance results.

  7. Oms1 associates with cytochrome c oxidase assembly intermediates to stabilize newly synthesized Cox1

    PubMed Central

    Bareth, Bettina; Nikolov, Miroslav; Lorenzi, Isotta; Hildenbeutel, Markus; Mick, David U.; Helbig, Christin; Urlaub, Henning; Ott, Martin; Rehling, Peter; Dennerlein, Sven

    2016-01-01

    The mitochondrial cytochrome c oxidase assembles in the inner membrane from subunits of dual genetic origin. The assembly process of the enzyme is initiated by membrane insertion of the mitochondria-encoded Cox1 subunit. During complex maturation, transient assembly intermediates, consisting of structural subunits and specialized chaperone-like assembly factors, are formed. In addition, cofactors such as heme and copper have to be inserted into the nascent complex. To regulate the assembly process, the availability of Cox1 is under control of a regulatory feedback cycle in which translation of COX1 mRNA is stalled when assembly intermediates of Cox1 accumulate through inactivation of the translational activator Mss51. Here we isolate a cytochrome c oxidase assembly intermediate in preparatory scale from coa1Δ mutant cells, using Mss51 as bait. We demonstrate that at this stage of assembly, the complex has not yet incorporated the heme a cofactors. Using quantitative mass spectrometry, we define the protein composition of the assembly intermediate and unexpectedly identify the putative methyltransferase Oms1 as a constituent. Our analyses show that Oms1 participates in cytochrome c oxidase assembly by stabilizing newly synthesized Cox1. PMID:27030670

  8. Code cases for implementing risk-based inservice testing in the ASME OM code

    SciTech Connect

    Rowley, C.W.

    1996-12-01

    Historically inservice testing has been reasonably effective, but quite costly. Recent applications of plant PRAs to the scope of the IST program have demonstrated that of the 30 pumps and 500 valves in the typical plant IST program, less than half of the pumps and ten percent of the valves are risk significant. The way the ASME plans to tackle this overly-conservative scope for IST components is to use the PRA and plant expert panels to create a two tier IST component categorization scheme. The PRA provides the quantitative risk information and the plant expert panel blends the quantitative and deterministic information to place the IST component into one of two categories: More Safety Significant Component (MSSC) or Less Safety Significant Component (LSSC). With all the pumps and valves in the IST program placed in MSSC or LSSC categories, two different testing strategies will be applied. The testing strategies will be unique for the type of component, such as centrifugal pump, positive displacement pump, MOV, AOV, SOV, SRV, PORV, HOV, CV, and MV. A series of OM Code Cases are being developed to capture this process for a plant to use. One Code Case will be for Component Importance Ranking. The remaining Code Cases will develop the MSSC and LSSC testing strategy for type of component. These Code Cases are planned for publication in early 1997. Later, after some industry application of the Code Cases, the alternative Code Case requirements will gravitate to the ASME OM Code as appendices.

  9. Obesity-resistant S5B rats showed great cocaine conditioned place preference than the obesity-prone OM rats

    SciTech Connect

    Thanos, P.K.; Wang, G.; Thanos, P.K..; Kim, R.; Cho, J.; Michaelides, M.; Anderson, B.J.; Primeaux, S.D.; Bray, G.A.; Wang, G.-J.; Robinson, J.K.; Volkow, N.D.

    2010-12-01

    Dopamine (DA) and the DA D2 receptor (D2R) are involved in the rewarding and conditioned responses to food and drug rewards. Osborne-Mendel (OM) rats are genetically prone and S5B/P rats are genetically resistant to obesity when fed a high-fat diet. We hypothesized that the differential sensitivity of these two rat strains to natural rewards may also be reflected in sensitivity to drugs of abuse. Therefore, we tested whether OM and S5B/P rats showed a differential preference to cocaine using conditioned place preference (CPP). To also evaluate whether there is specific involvement of the D2R in this differential conditioning sensitivity, we then tested whether the D2R agonist bromocriptine (BC) would differentially affect the effects of cocaine in the two strains. OM and S5B/P rats were conditioned with cocaine (5 or 10 mg/kg) in one chamber and saline in another for 8 days. Rats were then tested for cocaine preference. The effects of BC (0.5, 1, 5, 10, 20 mg/kg) on cocaine preference were then assessed in subsequent test sessions. OM rats did not show a significant preference for the cocaine-paired chamber on test day. Only the S5B/P rats showed cocaine CPP. Later treatment with only the highest dose of BC resulted in reduced cocaine CPP in S5B/P rats when treated with 5 mg/kg cocaine and in OM rats treated with 10 mg/kg cocaine. Our results indicated that obesity-resistant S5B rats showed greater cocaine CPP than the obesity-prone OM rats. These findings do not support a theory of common vulnerability for reinforcer preferences (food and cocaine). However, they show that BC reduced cocaine conditioning effects supporting at least a partial regulatory role of D2R in conditioned responses to drugs.

  10. Genome Sequence of Oenococcus oeni OM27, the First Fully Assembled Genome of a Strain Isolated from an Italian Wine

    PubMed Central

    Lamontanara, Antonella; Orrù, Luigi; Cattivelli, Luigi; Russo, Pasquale; Capozzi, Vittorio

    2014-01-01

    Oenococcus oeni OM27 is a strain selected from “Nero di Troia” wine undergoing spontaneous malolactic fermentation. “Nero di Troia” is a wine made from “Uva di Troia” grapes, an autochthonous black grape variety from the Apulian region (south of Italy). In this paper we present a 1.78-Mb assembly of the O. oeni OM27 genome, the first fully assembled genome of an O. oeni strain from an Italian wine. PMID:24994801

  11. Negative Birefringence in the Higher Homologs of the 5O.m Series of Liquid Crystals.

    PubMed

    Bhattacharjee, Debanjan; Alapati, Parameswara Rao; Bhattacharjee, Ayon

    2016-07-14

    A detailed study of the different parameters of the higher homologs of the 5O.m (m = 14, 16) series of liquid-crystalline compounds is reported. These are interdigitated compounds with unsymmetrical alkyl chain length. The compounds have a unique nature, unlike the other members of the nO.m series. The molecular structure reported in this article is not purely uniaxial; it has a bending tendency. In this article, we report that both the compounds exhibit negative birefringence. For the optical study, the refractive indices, ne and no, of the sample are measured by the thin-prism technique, using a He-Ne laser beam of wavelength 633 nm. A four-parameter model was used for fitting the experimental results. From the experimentally measured refractive indices, it is possible to compare different parameters with those of the theoretical models. PMID:27267484

  12. Immuno EM-OM correlative microscopy in solution by atmospheric scanning electron microscopy (ASEM).

    PubMed

    Maruyama, Yuusuke; Ebihara, Tatsuhiko; Nishiyama, Hidetoshi; Suga, Mitsuo; Sato, Chikara

    2012-11-01

    In the atmospheric scanning electron microscope (ASEM), an inverted SEM observes the wet sample from beneath an open dish while an optical microscope (OM) observes it from above. The disposable dish with a silicon nitride (SiN) film window can hold a few milliliters of culture medium, and allows various types of cells to be cultured in a stable environment. The use of this system for in situ correlative OM/SEM immuno-microscopy is explored, the efficiency of the required dual-tagged labeling assessed and the imaging capabilities of the ASEM documented. We have visualized the cytoskeletons formed by actin and tubulin, the chaperone PDI that catalyses native disulfide bond formation of proteins in the endoplasmic reticulum (ER) and the calcium sensor STIM1 that is integrated in ER membranes, using established cell lines. In particular, a dynamic string-like gathering of STIM1 was observed on the ER in Jurkat T cells in response to Ca(2+) store depletion. We have also visualized filamentous actin (F-actin) and tubulin in the growth cones of primary-culture neurons as well as in synapses. Further, radially running actin fibers were shown to partly colocalize with concentric bands of the Ca(2+) signaling component Homer1c in the lamellipodia of neuron primary culture growth cones. After synapse formation, neurite configurations were drastically rearranged; a button structure with a fine F-actin frame faces a spine with a different F-actin framework. Based on this work, ASEM correlative microscopy promises to allow the dynamics of various protein complexes to be investigated in the near future. PMID:22959994

  13. A Preservation Program for the Colorado State University Libraries. The Final Report of the ARL/OMS Preservation Planning Program.

    ERIC Educational Resources Information Center

    Green, Stephen; And Others

    This final report is a product of a Preservation Planning Program (PPP) self-study conducted by the Colorado State University Library (CSUL) working with the Association of Research Libraries' (ARL) Office of Management Studies (OMS). Designed to put self-help tools into the hands of library staff responsible for developing plans and procedures…

  14. STS-46 Atlantis', OV-104's, vertical tail and OMS pods lit up by RCS jet firing

    NASA Technical Reports Server (NTRS)

    1992-01-01

    STS-46 Atlantis', Orbiter Vehicle (OV) 104's, vertical tail and orbital maneuvering system (OMS) pods are highlighted by the glow of the reaction control system (RCS) jet firings. OV-104 was at an altitude of 128 nautical miles. The remote manipulator system (RMS) arm is partially visible stowed along the port side sill longeron.

  15. Presence of hsp65 in bacterial extracts (OM-89): a possible mediator of orally-induced tolerance?

    PubMed

    Polla, B S; Baladi, S; Fuller, K; Rook, G

    1995-08-16

    Heat shock proteins (HSP) have been implicated in rodent models of autoimmunity, particularly arthritis, and there is suggestive though inconclusive evidence that they may also play a role in human autoimmune disease. The simplest hypothesis is based on molecular mimicry due to the amino-acid sequence homology between mammalian and microbial HSP. Recently OM-89, an extract of several strains of Escherichia coli, has shown some efficacy in the treatment of rheumatoid arthritis (RA) when taken orally. Using species-specific antibodies, we show here that OM-89 contains the 65 kDa HSP (hsp65), while hsp65 was not detected in another bacterial extract containing other microorganisms, including Staphylococcus aureus (OM-85). We suggest that if the human homologue of hsp65 is a relevant target antigen in the human disease, the efficacy of the preparation could be due to induction of oral tolerance or to switching the Th1 response towards Th2. Alternatively, even if the human hsp65 is not a target molecule in RA joints, OM-89 may evoke bystander suppression of joint inflammation via induction of TGF beta-secreting effector cells. These hypotheses should be tested in further studies. PMID:7649235

  16. OM-VPE growth of Mg-doped GaAs. [OrganoMetallic-Vapor Phase Epitaxy

    NASA Technical Reports Server (NTRS)

    Lewis, C. R.; Dietze, W. T.; Ludowise, M. J.

    1982-01-01

    The epitaxial growth of Mg-doped GaAs by the organometallic vapor phase epitaxial process (OM-VPE) has been achieved for the first time. The doping is controllable over a wide range of input fluxes of bis (cyclopentadienyl) magnesium, (C5H5)2Mg, the organometallic precursor to Mg.

  17. Solution conformation of a neuronal nicotinic acetylcholine receptor antagonist {alpha}-conotoxin OmIA that discriminates {alpha}3 vs. {alpha}6 nAChR subtypes

    SciTech Connect

    Chi, Seung-Wook; Kim, Do-Hyoung; Olivera, Baldomero M.; McIntosh, J. Michael; Han, Kyou-Hoon . E-mail: khhan600@kribb.re.kr

    2006-06-23

    {alpha}-Conotoxin OmIA from Conus omaria is the only {alpha}-conotoxin that shows a {approx}20-fold higher affinity to the {alpha}3{beta}2 over the {alpha}6{beta}2 subtype of nicotinic acetylcholine receptor. We have determined a three-dimensional structure of {alpha}-conotoxin OmIA by nuclear magnetic resonance spectroscopy. {alpha}-Conotoxin OmIA has an '{omega}-shaped' overall topology with His{sup 5}-Asn{sup 12} forming an {alpha}-helix. Structural features of {alpha}-conotoxin OmIA responsible for its selectivity are suggested by comparing its surface characteristics with other functionally related {alpha}4/7 subfamily conotoxins. Reduced size of the hydrophilic area in {alpha}-conotoxin OmIA seems to be associated with the reduced affinity towards the {alpha}6{beta}2 nAChR subtype.

  18. Structure and composition of Fe-OM co-precipitates that form in soil-derived solutions

    NASA Astrophysics Data System (ADS)

    Fritzsche, Andreas; Schröder, Christian; Wieczorek, Arkadiusz K.; Händel, Matthias; Ritschel, Thomas; Totsche, Kai U.

    2015-11-01

    Iron oxides represent a substantial fraction of secondary minerals and particularly affect the reactive properties of natural systems in which they formed, e.g. in soils and sediments. Yet, it is still obscure how transient conditions in the solution will affect the properties of in situ precipitated Fe oxides. Transient compositions, i.e. compositions that change with time, arise due to predominant non-equilibrium states in natural systems, e.g. between liquid and solid phases in soils. In this study, we characterize Fe-OM co-precipitates that formed in pH-neutral exfiltrates from anoxic topsoils under transient conditions. We applied soil column outflow experiments, in which Fe2+ was discharged with the effluent from anoxic soil and subsequently oxidized in the effluent due to contact with air. Our study features three novel aspects being unconsidered so far: (i) the transient composition of soil-derived solutions, (ii) that pedogenic Fe oxides instead of Fe salts serve as major source for Fe2+ in soil solution and (iii) the presence of exclusively soil-derived organic and inorganic compounds during precipitation. The experiments were carried out with two topsoil materials that differed in composition, texture and land use. Derived from Mössbauer spectroscopy, broad distributions in quadrupole splittings (0-2 mm s-1) and magnetic hyperfine fields (35-53 T) indicated the presence of low-crystalline ferrihydrite and even lower crystalline Fe phases in all Fe-OM co-precipitates. There was no unequivocal evidence for other Fe oxides, i.e. lepidocrocite and (nano)goethite. The Fe-OM co-precipitates contained inorganic (P, sulfate, silicate, Al, As) and organic compounds (proteins, polysaccharides), which were concurrently discharged from the soils. Their content in the Fe-OM co-precipitates was controlled by their respective concentration in the soil-derived solution. On a molar basis, OC and Fe were the main components in the Fe-OM co-precipitates (OC/Fe ratio = 0

  19. Relationship between soluble microbial products (SMP) and effluent organic matter (EfOM): characterized by fluorescence excitation emission matrix coupled with parallel factor analysis.

    PubMed

    Yu, Huarong; Qu, Fangshu; Sun, Lianpeng; Liang, Heng; Han, Zhengshuang; Chang, Haiqing; Shao, Senlin; Li, Guibai

    2015-02-01

    Effluent organic matter (EfOM) originating from wastewater treatment plant (WWTP) is of significant concern, as it not only influences the discharge quality of WWTP but also exerts a significant effect on the efficiency of the downstream advanced treatment facilities. Soluble microbial products (SMP) is a major part of EfOM. In order to further understand the relationship between soluble microbial products (SMP) and EfOM, and in turn, to propose measures for EfOM control, the formation of SMP and EfOM in identical activated sludge sequencing batch reactors (SBR) with different feed water was investigated using fluorescence excitation and emission spectroscopy matrix coupled with parallel factor analysis (EEM-PARAFAC) as well as other organic matter quantification tools. Results showed that EfOM contained not only SMP but also a considerable amount of allochthonous organic matter that derived not merely from natural organic matter (NOM). Four components in EfOM/SMP were identified by EEM-PARAFAC. Tyrosine-like substances in EfOM (Component 3, λex/em=270/316 nm) were mainly originated from utilization associated products (UAP) of SMP. Tryptophan-like substances (Component 2, λex/em=280/336 nm) as well as fulvic-like and humic-like substances in EfOM (Component 1, λex/em=240(290)/392 nm and Component 4, λex/em=260(365)/444 nm) were majorly derived from the refractory substances introduced along with the influent, among which Component 2 was stemmed from sources other than NOM. As solid retention time (SRT) increased, Component 2 and polysaccharides in SMP/EfOM decreased, while Component 4 in SMP increased. PMID:25481353

  20. In vivo study on the immunomodulating effects of OM-85 BV on survival, inflammatory cell recruitment and bacterial clearance in Klebsiella pneumonia.

    PubMed

    Broug-Holub, E; Kraal, G

    1997-01-01

    Oral administration of the bacterial extract OM-85 BV has been shown to prime alveolar macrophages (AM) in such a way that they secrete significantly more nitric oxide, tumor necrosis factor-alpha and interleukin-1beta upon in vitro stimulation with lipopolysaccharide (LPS). As increased cytokine secretion by AM may account for the therapeutic effect of OM-85 BV in respiratory tract infections, we studied the effect of orally administered OM-85 BV on the outcome of Klebsiella pneumoniae-induced pneumonia. Mice received a daily oral dose of OM-85 BV (350 mg/kg body weight) for 5 days and were intratracheally infected with 333, 1000 or 3333 CFU K. pneumoniae on day 8. It was shown that OM-85 BV pretreatment of mice has no effect on bacterial clearance, neutrophil recruitment and survival in this acute respiratory tract infection. Also, OM-85 BV treatment had no protective effect in a recurrent infection with K. pneumoniae. It is concluded that AM activation by oral treatment with OM-85 BV is not sufficient to play a protective role in respiratory tract infection with K. pneumoniae. PMID:9637354

  1. Size-controlled synthesis and formation mechanism of manganese oxide OMS-2 nanowires under reflux conditions with KMnO4 and inorganic acids

    NASA Astrophysics Data System (ADS)

    Zhang, Qin; Cheng, Xiaodi; Qiu, Guohong; Liu, Fan; Feng, Xionghan

    2016-05-01

    This study presents a simplified approach for size-controlled synthesis of manganese oxide octahedral molecular sieve (OMS-2) nanowires using potassium permanganate (KMnO4) and different inorganic acids (HCl, HNO3, and H2SO4) under reflux conditions. The morphology and nanostructure of the synthesized products are characterized by X-ray diffraction, Ar adsorption, and electron microscopy analysis, in order to elucidate the controlling effects of acid concentration and type as well as the formation mechanism of OMS-2 nanowires. The concentration of inorganic acid is a crucial factor controlling the phase of the synthesized products. OMS-2 nanowires are obtained with HCl at the concentration ≥0.96 mol/L or with HNO3 and H2SO4 at the concentrations ≥0.72 mol/L. Differently, the type of inorganic acid effectively determines the particle size of OMS-2 nanowires. When the acid is changed from HCl to HNO3 and H2SO4 in the reflux system, the average length of OMS-2 declines significantly by 60-70% (1104-442 and 339 nm), with minor decreased in the average width (43-39 and 34 nm). The formation of OMS-2 nanowires under reflux conditions with KMnO4 and inorganic acids involves a two-step process, i.e., the initial formation of layered manganese oxides, and subsequent transformation to OMS-2 via a dissolution-recrystallization process under acidic conditions. The proposed reflux route provides an alternative approach for synthesizing OMS-2 nanowires as well as other porous nano-crystalline OMS materials.

  2. EDITORIAL: Special section: Selected papers from OMS'05, the 1st Topical Meeting of the European Optical Society on Optical Microsystems (OMS)

    NASA Astrophysics Data System (ADS)

    Rendina, Ivo; Fazio, Eugenio; Ferraro, Pietro

    2006-07-01

    OMS'05 is the first international conference wholly dedicated to optical microsystems. It was organized by the European Optical Society (EOS) in the frame of its international topical meeting activity and was held in Italy, September 2005, amidst the wonderful scenery of the Island of Capri. A possible definition of an optical microsystem is a complex system, able to perform one or more sensing and actuation functions, where optical devices are integrated in a smart way with electronic, mechanical and sensing components by taking advantage of the progress in micro- and nano-technologies. The increasing interest in this field arises from the expected applications that would significantly improve the quality of life. The list of possibilities offered by the optical microsystem enabling technologies is very long and seems to increase day by day. We are not only thinking about the next generation of optical telecommunication networks and computers, but also about low-cost, compact microsystems for environmental monitoring, in order to improve safety in the avionic and automotive fields, medical diagnostics and proteomic/genomic studies, or just finding general applications in several industrial fields. The goal of the conference was to involve scientists and young researchers from the main public and private laboratories, giving them the opportunity to present new scientific results and compare their know-how in the exciting and emerging field of optical microsystems. We believe that we succeeded in this. More than 200 scientists from all over the world attended the conference. We had more than 100 oral presentations and approximately 20 from the keynote lectures and invited speeches. It was an opportunity to define the most recent progress carried out in the field and to outline the possible road-map leading to the expected results in the industrial and social fields. We strongly believe that research and technology are closely interconnected at present and cannot

  3. Modeling and simulation of offshore wind farm O&M processes

    SciTech Connect

    Joschko, Philip; Widok, Andi H.; Appel, Susanne; Greiner, Saskia; Albers, Henning; Page, Bernd

    2015-04-15

    This paper describes a holistic approach to operation and maintenance (O&M) processes in the domain of offshore wind farm power generation. The acquisition and process visualization is followed by a risk analysis of all relevant processes. Hereafter, a tool was designed, which is able to model the defined processes in a BPMN 2.0 notation, as well as connect and simulate them. Furthermore, the notation was enriched with new elements, representing other relevant factors that were, to date, only displayable with much higher effort. In that regard a variety of more complex situations were integrated, such as for example new process interactions depending on different weather influences, in which case a stochastic weather generator was combined with the business simulation or other wind farm aspects important to the smooth running of the offshore wind farms. In addition, the choices for different methodologies, such as the simulation framework or the business process notation will be presented and elaborated depending on the impact they had on the development of the approach and the software solution. - Highlights: • Analysis of operation and maintenance processes of offshore wind farms • Process modeling with BPMN 2.0 • Domain-specific simulation tool.

  4. Effect of Increased Immunosuppression on Developmental Outcome of Opsoclonus Myoclonus Syndrome (OMS).

    PubMed

    Mitchell, Wendy G; Wooten, Amelia A; O'Neil, Sharon H; Rodriguez, Jenny G; Cruz, Rosa E; Wittern, Rachael

    2015-07-01

    Opsoclonus myoclonus syndrome (OMS) produces long-term cognitive, behavioral, and motor deficits. Objective was to see if more aggressive treatment improved outcome. Assessment included opsoclonus myoclonus syndrome rating, developmental/cognitive and motor assessment, and adaptive behavior. Fourteen subjects completed testing. Nine had neuroblastoma. Onset was at 10 to 35 months; onset to diagnosis: 2 days to 14 months, and onset to first treatment: 5 days to 15 months. Initial treatment was corticotropin (12), oral steroids (3), plus intravenous immunoglobulin in all. Ten received rituximab, 5 cyclophosphamide. Age at testing ranged from 2.5 to 10.3 years. Adaptive Behavior Score (11 subjects), mean 93.5; estimated Intelligence Quotient/Developmental Quotient mean 93.5; Motor: mean 92.8. Residual opsoclonus myoclonus syndrome symptoms at the time of the evaluation were generally minor; opsoclonus myoclonus syndrome scores ranged from 0 to 6. Comparison to previously reported opsoclonus myoclonus syndrome subjects showed improved outcomes: Adaptive behavior, cognitive and motor scores were significantly higher (P < .001) in new subjects. Outcomes have improved with more aggressive immunosuppression, with most opsoclonus myoclonus syndrome survivors now functioning at or near normal. PMID:25342308

  5. Influence of OM-85 BV on different humoral and cellular immune defense mechanisms of the respiratory tract.

    PubMed

    Emmerich, B; Pachmann, K; Milatovic, D; Emslander, H P

    1992-01-01

    To clarify the mode of action of an oral bacterial extract (OM-85 BV) on local airway immunity pre- and posttherapeutic washings from bronchoalveolar lavage (BAL) fluid of 28 adult patients with nonobstructive chronic bronchitis were analysed. In comparison to healthy controls, an elevation of total cell count due to an increased number of PMN leukocytes, and an impaired activity of the alveolar macrophages measured by the chemiluminescence response to opsonized zymosan was observed in patients with chronic bronchitis. After treatment with OM-85 BV, the BAL CD4+/CD8+ lymphocyte ratio and BAL interferon-gamma levels were increased. The alveolar macrophage activity was normalized and the BAL IgA was regulated from a reduced or hyperelevated to a moderately increased level. PMID:1439235

  6. Badania Ekologiczne Ryzyka Zachorowań Na Kleszczowe Zapalenie Mózgu W Polsce-Omówienie Metody

    PubMed Central

    Stefanoff, Paweł; Staszewska, Ewa; Ustrnul, Zbigniew; Rogalska, Justyna; Łankiewicz, Aleksandra; Rosińska, Magdalena

    2009-01-01

    W pracy omówiono metodologię aktualnie prowadzonych badań ekologicznych kleszczowego zapalenia mózgu (kzm) na terenie Polski. W celu oceny wpływu zróżnicowanych czynników środowiskowych, klimatycznych oraz społecznych na występowanie kzm w różnych regionach Polski zostanie przeprowadzona wieloczynnikoica analiza statystyczna na poziomie gmin dla lat 1999-2006. PMID:22320045

  7. Controlling the onset of OB/OM in a semiconductor quantum well system in an inverted Y-type configuration

    NASA Astrophysics Data System (ADS)

    Raheli, Ali; Hamedi, H. R.; Sahrai, M.

    2016-01-01

    The problem of optical bistability (OB) and optical multistability (OM) is numerically investigated in a four-level inverted Y-type semiconductor quantum well (SQW) structure immersed in a unidirectional ring cavity. In the four-level SQW system under consideration, a closed loop configuration is coupled to the upper level through a tunable probe field. We show that the OB threshold intensity can be controlled via the intensity of coupling fields which gives rise to the absorption variation of the probe field. In addition, due to the existence of the closed-loop configuration, the OB and OM behaviors of the proposed SQW medium are dependent on the relative phase of the applied fields. It is found that the OB can be switched to OM or vice versa by properly adjusting the relative phase of the applied fields. The results may provide new possibilities in real experiments for realizing an all-optical switching or coding element in a solid-state platform.

  8. Selective induction of the glucose-regulated protein grp78 in human monocytes by bacterial extracts (OM-85): a role for calcium as second messenger.

    PubMed

    Jacquier-Sarlin, M R; Dreher, D; Polla, B S

    1996-09-01

    Heat shock/stress proteins (HSP) act as molecular chaperones, protect cells from injury, and are involved in the immune response. We investigated the effects of the immunomodulating bacterial extracts OM-85 on the stress response in normal human peripheral blood monocytes. While OM-85 did not induce the classical HSP, we show here, using 2D gel electrophoresis combined with immunoblotting, the induction of the glucose regulated protein grp78 (the immunoglobulin heavy chain binding protein BiP) along with the described accumulation of pro-interleukin-1 beta. The increased Ca2+ mobilization observed with OM-85 is the likely second messenger for grp78 induction. Recent studies are in favor of a protective role of grp78 against cytokine-mediated cytotoxicity and apoptosis. We suggest that grp78 induction following exposure to OM-85 explains, at least in part, the immunodulatory and protective effects of the bacterial extracts. PMID:8806608

  9. 78 FR 9961 - Self-Regulatory Organizations; NASDAQ OMS BX, Inc.; Notice of Filing and Immediate Effectiveness...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-12

    ... posting Protected Quotations within the meaning of Regulation NMS (i.e. ``dark venues'' or ``dark pools... seek to execute on BX or on dark pools without executing on another exchange. Members may seek to....00- $10.01, and BX, DarkVenueA and ARCA each offer 100 shares at $10.01, a BDRK order to buy...

  10. Induction of interleukin 6 and interleukin 8 expression by Broncho-Vaxom (OM-85 BV) via C-Fos/serum responsive element.

    PubMed Central

    Keul, R.; Roth, M.; Papakonstantinou, E.; Nauck, M.; Perruchoud, A. P.; Block, L. H.

    1996-01-01

    BACKGROUND: Broncho-Vaxom (OM-85 BV) increases the resistance of the respiratory tract to bacterial infections by modulating host immune responses. The compound increases serum IgG levels but decreases IgE levels in patients suffering from chronic bronchitis or chronic obstructive pulmonary disease. It increases concentrations of gamma-interferon (IFN-gamma), IgA, and interleukin (IL)-2 in bronchoalveolar lavage fluid of patients with bronchitis. Treatment with OM-85 BV increases the number of T helper and natural killer cells. In this study the effects of OM-85 BV on transcription of cytokines is investigated in human lung fibroblasts. METHODS: Transcription and synthesis of IL-6 and IL-8 were assessed in cultured primary human lung fibroblasts using standard methods of Northern blot analysis for the level of mRNAs and enzyme linked immunosorbent assay for proteins. RESULTS: Broncho-Vaxom (OM-85 BV) at different concentrations induced transcription of IL-6 and IL-8. The effect of the drug on transcription of IL-6 and IL-8 genes correlated with secretion of the proteins into cell supernatants. OM-85 BV-dependent expression of the interleukin genes involved C-Fos/serum responsive element (C-Fos/SRE). CONCLUSIONS: The data suggest that the various immunopharmacological activities of OM-85 BV that have been described in clinical studies may be explained by its ability to induce expression of IL-6 and IL-8. Images PMID:8711646

  11. Impact of a mixed bacterial lysate (OM-85 BV) on the immunogenicity, safety and tolerability of inactivated influenza vaccine in children with recurrent respiratory tract infection.

    PubMed

    Esposito, Susanna; Marchisio, Paola; Prada, Elisabetta; Daleno, Cristina; Porretti, Laura; Carsetti, Rita; Bosco, Annalisa; Ierardi, Valentina; Scala, Alessia; Principi, Nicola

    2014-05-01

    It is known that the immunogenicity and efficacy of conventional inactivated influenza vaccines (IIVs) are not completely satisfactory in children. The aim of this prospective, randomised, single-blind study was to compare the immune response to, and the effectiveness and safety of, an IIV (Fluarix, GlaxoSmithKline Biologicals, Rixensart, Belgium) administered to 68 children aged 36-59 months affected by recurrent respiratory tract infections (RRTIs) who were vaccinated with (n=33) or without (n=35) the mixed bacterial lysate OM-85 BV (Broncho-vaxom, Vifor Pharma, Geneva, Switzerland). OM-85 BV had no effect on seroconversion or seroprotection rates, geometric mean titres, or dendritic cells, which were not significantly different between the two groups. Moreover, OM-85 BV did not significantly increase the pool of the memory B cells that produce IgG and IgM antibodies against the influenza antigens. However, respiratory morbidity was significantly lower in the children treated with OM-85 BV (p<0.05), thus confirming its positive effect on the incidence of RRTIs. There was no difference in the incidence of adverse events between the two groups. These findings show that the immune response of children to influenza vaccine is not significantly influenced by the administration of OM-85 BV. However, the use of OM-85 before and at the same time as IIV seems to reduce respiratory morbidity, and seems to be safe and well tolerated. PMID:24681270

  12. Acute effects of 3G mobile phone radiations on frontal haemodynamics during a cognitive task in teenagers and possible protective value of Om chanting.

    PubMed

    Bhargav, Hemant; N K, Manjunath; Varambally, Shivarama; Mooventhan, A; Bista, Suman; Singh, Deepeshwar; Chhabra, Harleen; Venkatasubramanian, Ganesan; T M, Srinivasan; H R, Nagendra

    2016-06-01

    Mobile phone induced electromagnetic field (MPEMF) as well as chanting of Vedic mantra 'OM' has been shown to affect cognition and brain haemodynamics, but findings are still inconclusive. Twenty right-handed healthy teenagers (eight males and 12 females) in the age range of 18.25 ± 0.44 years were randomly divided into four groups: (1) MPONOM (mobile phone 'ON' followed by 'OM' chanting); (2) MPOFOM (mobile phone 'OFF' followed by 'OM' chanting); (3) MPONSS (mobile phone 'ON' followed by 'SS' chanting); and (4) MPOFSS (mobile phone 'OFF' followed by 'SS' chanting). Brain haemodynamics during Stroop task were recorded using a 64-channel fNIRS device at three points of time: (1) baseline, (2) after 30 min of MPON/OF exposure, and (3) after 5 min of OM/SS chanting. RM-ANOVA was applied to perform within- and between-group comparisons, respectively. Between-group analysis revealed that total scores on incongruent Stroop task were significantly better after OM as compared to SS chanting (MPOFOM vs MPOFSS), pre-frontal activation was significantly lesser after OM as compared to SS chanting in channel 13. There was no significant difference between MPON and MPOF conditions for Stroop performance, as well as brain haemodynamics. These findings need confirmation through a larger trial in future. PMID:27266893

  13. Intracameral phenylephrine and ketorolac injection (OMS302) for maintenance of intraoperative pupil diameter and reduction of postoperative pain in intraocular lens replacement with phacoemulsification

    PubMed Central

    Lindstrom, Richard L; Loden, James C; Walters, Thomas R; Dunn, Steven H; Whitaker, J Steven; Kim, Terry; Demopulos, Gregory A; Tjia, Khiun

    2014-01-01

    Background The purpose of this study was to evaluate the effect of OMS302 on intraoperative pupil diameter and early postoperative ocular pain when administered during intraocular lens replacement surgery. Methods Four hundred and six patients (406 study eyes; 202 in the OMS302 group and 204 in the placebo group) were entered into this randomized, double-masked, placebo-controlled, multicenter Phase III study, which was conducted at 15 centers in the USA and the Netherlands. The patients received OMS302 (60.75 mM phenylephrine HCl and 11.25 mM ketorolac tromethamine) or placebo in irrigation solution during intraocular lens replacement. No other changes in procedure were required. Coprimary endpoints were change in pupil diameter over time from surgical baseline to end of procedure and patient-reported ocular pain during the first 12 hours postoperatively. Secondary endpoints included additional measures of pupil diameter and postoperative pain. Results OMS302 was superior to placebo in maintaining intraoperative mydriasis, preventing miosis, and reducing postoperative pain. The weighted mean (standard error) difference (OMS302 – placebo) in change in the area under the curve from baseline for pupil diameter was 0.590 ([0.049]; 95% confidence interval 0.494 to 0.686; P<0.0001). For ocular pain scores, the weighted mean (standard error) difference was −4.580 ([1.192]; 95% confidence interval −6.917 to 2.244; P=0.0002). All secondary efficacy results favored OMS302. Specifically, analyses supporting prevention of miosis (patients with ≥6 mm pupil diameter at completion of cortical clean-up and those with <6 mm diameter at any time during surgery) were significant for OMS302 (95.9% versus 77.0% and 9.2% versus 38.0%, respectively; P<0.0001 for each endpoint). OMS302 was well tolerated and not associated with any unexpected adverse events. Conclusion OMS302 maintained mydriasis, prevented miosis, and reduced early postoperative pain when administered in

  14. Millimetre-scale spatial distribution of stable OM components at intact preferential flow path surfaces in the B-horizon of two Luvisols

    NASA Astrophysics Data System (ADS)

    Leue, Martin; Ellerbrock, Ruth H.; Gerke, Horst H.

    2015-04-01

    In structured soils, the interaction of percolating water and reactive solutes with the soil matrix is often restricted to surfaces of preferential flow paths. In the subsoil horizons of Luvisols, surfaces of biopores and aggregates can be enriched in clay and organic matter (OM). These coatings not only contribute to the OM stabilization in subsoil horizons but the OM composition of the coatings also determines the bio-physico-chemical surface properties which are relevant during rapid solute transport. Using a combined approach of Fourier transform infrared spectroscopy in diffuse reflectance mode (DRIFT) and pyrolysis-field ionization mass spectrometry (Py-FIMS), the OM composition of standardized (i.e., diluted and ground) samples separated from soil aggregate coatings was found to be enriched in chemically stable OM components. However, it remained unclear if these results could be verified for intact samples. The objective of this study was to analyse the mm-scale distribution of stable OM components at intact structural surfaces of two Luvisols based on DRIFT mapping and correlations between DRIFT spectra and Py-FI mass spectra. Samples were manually separated from the outermost surfaces of earthworm burrows, coated and uncoated cracks, root channels, and pinhole fillings of the B-horizons of Luvisols developed from loess and glacial till. The DRIFT spectra of these undiluted and particle-intact samples were interpreted by the help of Py-FIMS data to identify spectral regions representative of functional groups of chemically stable (i.e., recalcitrant) OM components. The DRIFT mapping technique was applied to determine OM functional group data (i.e., C=C and C=O signals) from stable OM components at the intact structural surface types in mm-scale transects and grids. The DRIFT signal intensities from C=O and C=C bonds in the infrared range of wave number 1688 … 1565 cm-1 were related to highly stable, chemically recalcitrant OM components, examined by Py

  15. [Safety and efficacy of OM-85-BV plus amoxicillin/clavulanate in the treatment of subacute sinusitis and the prevention of recurrent infections in children].

    PubMed

    Gómez Barreto, D; De la Torre, C; Alvarez, A; Faure, A; Berber, A

    1998-01-01

    A 6-month double-blind, prospective, randomized, placebo-controlled trial was conducted to establish the safety and efficacy of OM-85-BV in the treatment of subacute sinusitis and in the following prevention of the respiratory tract infections in 56 children from 18 months to 9 years of age. In the subacute phase of the sinusitis the patients were given one OM-85-BV capsule (3.5 mg of bacterial extracts) (n = 26) or placebo (n = 30), daily for ten days; additionally both groups took amoxicillin/clavulanate 40/10 mg/kg daily in three divided doses for 21 days. For the following two months the patients took one OM-85-BV capsule or placebo, ten days a month. In the subacute phase the OM-85-BV group of patients improved sooner (5.56 +/- 4.98 vs 10 +/- 8.49 days) and had a shorter convalescence (15.38 +/- 8.91 vs 20.28 +/- 7.17 days). During the six month follow-up the patients in the OM-85-BV group had a lower number of infections (1.56 +/- 0.3 vs 2.22 +/- 0.43) and required a lower number of drug treatments (1.47 +/- 0.32 vs 1.94 +/- 0.42). One patient treated with OM-85-BV presented a mild rash which disappeared three days after the drug discontinuation. We conclude that OM-85-BV is safe at pediatric ages, as well as accelerates the cure and improvement of subacute sinusitis while it lowers the incidence of respiratory infections. PMID:9585823

  16. High efficiency epitaxial GaAs/GaAs and GaAs/Ge solar cell technology using OM/CVD

    NASA Technical Reports Server (NTRS)

    Wang, K. L.; Yeh, Y. C. M.; Stirn, R. J.; Swerdling, S.

    1980-01-01

    A technology for fabricating high efficiency, thin film GaAs solar cells on substrates appropriate for space and/or terrestrial applications was developed. The approach adopted utilizes organometallic chemical vapor deposition (OM-CVD) to form a GaAs layer epitaxially on a suitably prepared Ge epi-interlayer deposited on a substrate, especially a light weight silicon substrate which can lead to a 300 watt per kilogram array technology for space. The proposed cell structure is described. The GaAs epilayer growth on single crystal GaAs and Ge wafer substrates were investigated.

  17. Linking wood source and charring temperature to the stability and biological reactivity of PyOM in a temperate forest soil.

    NASA Astrophysics Data System (ADS)

    Gibson, Christy; Filley, Timothy; Hatton, Pierre Joseph; Nadelhoffer, Knute; Stark, Ruth; Bird, Jeffrey

    2015-04-01

    Fire is a major mediator of carbon (C) and nitrogen (N) cycling in forests, releasing significant quantities of greenhouse gases, soot, and aerosols while simultaneously depositing pyrogenic organic matter (PyOM) onto forest soil. The condensed aromatic structure of PyOM imparts a resistance to weathering and decay and potentially promotes soil C stabilization and sequestration. This resistance however, is largely dependent upon the physiochemical characteristics of source material and production temperature. Few studies have been able to determine the stability and reactivity of well-characterized PyOM in field or laboratory decay studies. To address this, we added highly 13C-enriched red maple (RM) or jack pine (JP) pyrolyzed at 200, 300, 450 or 600°C to a low C, near-surface soil (0.5%; 0-20 cm-depth) at 60% water holding capacity and 11% of native soil C. We then incubated the samples in the dark at 25°C for 6 months. The results of 13CO2 evolution measurements indicated that both pyrolysis temperature and wood species played a significant role in PyOM mineralization. PyOM mineralization rates decreased with increasing pyrolysis temperature for either species. RM mineralization rates were consistently greater (~5 to ~25%) than for JP <600°C during the first 17 days, but declined after this time point with the exception of RM PyOM 300°C and 450°C, which had higher mineralization rates than JP throughout the entire incubation period. These observations of relative reactivity were consistent with our detailed spectroscopic, elemental, and stable isotope analysis of the PyOM samples across this pyrolysis gradient, which shows significant physicochemical changes happening more readily for JP (~300°C) than for RM (450°C). These results highlight how differences in PyOM physiochemical characteristics linked to wood species thermal transformation thresholds may be predictors in determining the relative stability of PyOM in soil.

  18. Transmission-ratio distortion through F{sub 1} females at chromosome 11 loci linked to Om in the mouse DDK syndrome

    SciTech Connect

    Villena, F.P.M. de; Naumova, A.K.; Smith, M.; Verner, A.

    1996-04-01

    We determined the genotypes of >200 offspring that are survivors of matings between female reciprocal F{sub 1} hybrids (between the DDK and C57BL/6J inbred mouse strains) and C57BL/6J males at markers linked to the Ovum mutant (Om) locus on chromosome 11. In contrast to the expectations of our previous genetic model to explain the {open_quotes}DDK syndrome,{close_quotes} the genotypes of these offspring do not reflect preferential survival of individuals that receive C57BL/6J alleles from the F{sub 1} females in the region of chromosome 11 to which the Om locus has been mapped. In face, we observe significant transmission-ratio distortion in favor of DDK alleles in this region. These results are also in contrast to the expectation of Wakasugi`s genetic model for the inheritance of Om, in which he proposed equal transmission of DDK and non-DDK alleles from F{sub 1} females. We propose that the results of these experiments may be explained by reduced expression of the maternal DDK Om allele or expression of the maternal DDK Om allele in only a portion of the ova of F{sub 1} females. 23 refs., 2 figs., 2 tabs.

  19. The new Mercedes-Benz OM 904 LA light heavy-duty diesel engine for class 6 trucks

    SciTech Connect

    Schittler, M.; Bergmann, H.; Flathmann, K.

    1996-09-01

    As part of a comprehensive strategic product initiative the most important commercial vehicle manufacturer--Mercedes-Benz AG--is step by step renewing its entire product range. This primarily refers to the heart of the vehicles--the engine. After the OM 457 LA, which was developed together with DDC for the special American market demands and which is produced and sold in the US by DDC under the label Series 55, has had its premiere in Freightliner`s Century Class, the OM 904 LA will now follow in the light commercial vehicle class. This engine has a completely new concept of a direct-injection, highly sophisticated turbocharged four-cylinder in-line engine with air-to-air intercooler, whose main characteristics can be outlined by the terms multi-valve technology, high-pressure injection via unit pumps and electronic engine control. This small engine has several interesting features, which--up to now--were only known from class 8 engines. In addition to fulfilling increased customer demands with regard to long service life, easy maintenance, reliability and economy, great attention was paid during the design of the engine to not only fulfill the global regulations, but also account for sufficient potential to comply with further aggravations to be expected. The most important design features and the attained engine ratings are indicated and explained in detail.

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  6. Understanding the fouling of UF/MF hollow fibres of biologically treated wastewaters using advanced EfOM characterization and statistical tools.

    PubMed

    Filloux, E; Labanowski, J; Croue, J P

    2012-08-01

    Five secondary effluents and a river water source were characterized using size exclusion chromatography (LC-OCD-UVD-OND) and emission-excitation matrix (EEM) fluorescence spectroscopy in order to identify the major effluent organic matter (EfOM) fractions responsible for membrane fouling. This study showed the feasibility of coupling fluorescence EEM and LC-OCD-UVD-OND to investigate the fouling potential as well as a means to differentiate natural organic matter (NOM) from EfOM. The secondary effluents and river water showed a significant difference in organic matter characteristics and fouling potential, highlighting the importance of biological processes and the feed water source on EfOM characteristics and fouling potential. On the basis of statistical analysis, protein-like substances were found to be highly correlated to the fouling potential of secondary effluents. PMID:22717564

  7. Effect of anoxic vs. oxic conditions in soils on composition of mobile OM as revealed from comprehensive fluorescence analysis of soil effluents

    NASA Astrophysics Data System (ADS)

    Fritzsche, Andreas; Ritschel, Thomas; Totsche, Kai

    2014-05-01

    The fractionation of OM due to sorption of DOM on mineral surfaces has drawn much attention in soil science. This is mainly motivated by the implied stabilization of OM and the disposition of less affine organic molecules as mobile compounds within porous media, both processes significantly affecting the carbon cycling and that of OM-associated elements. In this study, we provide a time-resolved assessment of mobile OM in soil effluents on the basis of fluorescence excitation-emission-matrices (EEM). Our comprehensive fluorescence EEM analysis was based on a supervised parallel factor analysis (PARAFAC) that permits the fixing of selected components. We estimated the protein content in soil effluent OM with a reference for microbially produced proteins from Bacillus subtilis. The soil effluent was obtained from soil columns filled with topsoil either from a floodplain site or a maize field. Except for the 1 mM NaCl influent, nothing was added to the soil columns. Under water-saturated conditions, the activity of autochthonous microbial communities induced anoxic conditions within the soil columns resulting in the microbial reduction of pedogenic Fe(III) oxides and subsequent discharge of mobile Fe2+ during percolation. Upon re-aeration of the soil effluent, Fe2+ re-oxidized and precipitated as organo-mineral ferrihydrite in the soil effluent. EEM from consecutively sampled effluent fractions pointed to a mainly invariant soil effluent OM composition, where fulvic acid-like components were predominant. However, the OM, which was associated with the effluent ferrihydrite, was enriched in proteins, which was confirmed by corresponding FTIR spectra. This suggests the preferential association of proteins with in situ-precipitated ferrihydrite, rendering proteins less mobile in soils, where precipitation and immobilization of ferrihydrite occurs. Consequently, one would assume lower protein concentrations in the soil effluent if ferrihydrite precipitation occurs within

  8. Identification of TL-Om1, an Adult T-Cell Leukemia (ATL) Cell Line, as Reference Material for Quantitative PCR for Human T-Lymphotropic Virus 1

    PubMed Central

    Okuma, Kazu; Yamagishi, Makoto; Yamochi, Tadanori; Firouzi, Sanaz; Momose, Haruka; Mizukami, Takuo; Takizawa, Kazuya; Araki, Kumiko; Sugamura, Kazuo; Yamaguchi, Kazunari; Watanabe, Toshiki

    2014-01-01

    Quantitative PCR (qPCR) for human T-lymphotropic virus 1 (HTLV-1) is useful for measuring the amount of integrated HTLV-1 proviral DNA in peripheral blood mononuclear cells. Many laboratories in Japan have developed different HTLV-1 qPCR methods. However, when six independent laboratories analyzed the proviral load of the same samples, there was a 5-fold difference in their results. To standardize HTLV-1 qPCR, preparation of a well-defined reference material is needed. We analyzed the integrated HTLV-1 genome and the internal control (IC) genes of TL-Om1, a cell line derived from adult T-cell leukemia, to confirm its suitability as a reference material for HTLV-1 qPCR. Fluorescent in situ hybridization (FISH) showed that HTLV-1 provirus was monoclonally integrated in chromosome 1 at the site of 1p13 in the TL-Om1 genome. HTLV-1 proviral genome was not transferred from TL-Om1 to an uninfected T-cell line, suggesting that the HTLV-1 proviral copy number in TL-Om1 cells is stable. To determine the copy number of HTLV-1 provirus and IC genes in TL-Om1 cells, we used FISH, digital PCR, and qPCR. HTLV-1 copy numbers obtained by these three methods were similar, suggesting that their results were accurate. Also, the ratio of the copy number of HTLV-1 provirus to one of the IC genes, RNase P, was consistent for all three methods. These findings indicate that TL-Om1 cells are an appropriate reference material for HTLV-1 qPCR. PMID:25502533

  9. New insights into the structure of Om Ali-Thelepte basin, central Tunisia, inferred from gravity data: Hydrogeological implications

    NASA Astrophysics Data System (ADS)

    Harchi, Mongi; Gabtni, Hakim; El Mejri, Hatem; Dassi, Lassaad; Mammou, Abdallah Ben

    2016-08-01

    This work presents new results from gravity data analyses and interpretation within the Om Ali-Thelepte (OAT) basin, central Tunisia. It focuses on the hydrogeological implication, using several qualitative and quantitative techniques such as horizontal gradient, upward continuation and Euler deconvolution on boreholes log data, seismic reflection data and electrical conductivity measurements. The structures highlighted using the filtering techniques suggest that the Miocene aquifer of OAT basin is cut by four major fault systems that trend E-W, NE-SW, NW-SE and NNE-SSW. In addition, a NW-SE gravity model established shows the geometry of the Miocene sandstone reservoir and the Upper Cretaceous limestone rocks. Moreover, the superimposition of the electrical conductivity and the structural maps indicates that the low conductivity values of sampled water from boreholes are located around main faults.

  10. 78 FR 67460 - Qualification of Drivers; Exemption Applications; Vision

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  5. N/om, Change, and Social Work: A Recursive Frame Analysis of the Transformative Rituals of the Ju/'hoan Bushmen

    ERIC Educational Resources Information Center

    Keeney, Hillary; Keeney, Bradford

    2013-01-01

    The Ju/'hoan Bushman origin myth is depicted as a contextual frame for their healing and transformative ways. Using Recursive Frame Analysis, these performances are shown to be an enactment of the border crossing between First and Second Creation, that is, pre-linguistic and linguistic domains of experience. Here n/om, or the presumed creative…

  6. Simulation of the interface between the Indian summer monsoon and the East Asian summer monsoon: Intercomparison between MPI-ESM and ECHAM5/MPI-OM

    NASA Astrophysics Data System (ADS)

    Guo, Yiran; Cao, Jie; Li, Hui; Wang, Jian; Ding, Yuchao

    2016-03-01

    The time-mean and interannual variability of the interface between the Indian summer monsoon and East Asian summer monsoon (IIE) was assessed using both Max-Planck-Institute Earth System Model (MPI-ESM) and ECHAM5/MPI-OM and by calculating diagnostics and skill metrics around the IIE area. Progress has been made in modeling these aspects by moving from ECHAM5/MPI-OM to MPI-ESM. MPI-ESM is more skillful than ECHAM5/MPI-OM in modeling the time-mean state and the extreme condition of the IIE. Though simulation of the interannual variability significantly deviates to some extent in both MPI-ESM and ECHAM5/MPI-OM, MPI-ESM-LR shows better skill in reflecting the relationship among sea surface temperature anomalies over the Pacific, circulation anomalies over East Asia, and IIE variability. The temperature becomes warmer under the RCP2.6 and RCP8.5 scenarios in comparison with the historical experiments, but the position of the IIE and the key physical process in relation to the IIE variability almost remains the same, suggesting that the Indian summer monsoon tends to change in phase with the East Asian summer monsoon under each RCP scenario. The relatively realistic description of the physical processes modulated by terrain in MPI-ESM may be one of the most important reasons why MPI-ESM performs better in simulating the IIE.

  7. [Preventive effect of an immunomodulator, OM-85 BV, on acute exacerbations of chronic bronchitis in elderly patients. Preliminary results at six months in 291 patients].

    PubMed

    Orcel, B; Delclaux, B; Baud, M; Derenne, J P

    1993-01-01

    Three hundred fifty six patients aged 65 years or more (mean age 81.8 years) who were suffering from chronic bronchitis were included in a double-blind trial against placebo to assess the preventative effect of OM-85 BV against acute exacerbations of chronic bronchitis. OM-85 BV is an immunostimulant composed of lyophilised factions of 8 bacteria which are most frequently encountered during the course of respiratory tract infections. 291 patients completed the study. In the group treated by OM-85 BV, a significant increase in the number of patients with no episode of acute bronchitis was noted (96 versus 71, p = 0.006). There was a 38.8% reduction in the absolute numbers of episodes of acute bronchitis and a 33% reduction in the number of prescriptions for antibiotics, however there was no difference in the number of pneumonias and bronchopneumonias. These results show the protective effect of OM-85 BV against bronchial superinfections in a large population of elderly patients suffering from chronic bronchitis. PMID:8451491

  8. CORE-OM Mental Health Norms of Students Attending University Counselling Services Benchmarked against an Age-Matched Primary Care Sample

    ERIC Educational Resources Information Center

    Connell, Janice; Barkham, Michael; Mellor-Clark, John

    2007-01-01

    Whilst concern has been expressed at the increasing severity of the mental health of students, there has been very little research on this growing population outside of small, single institution studies. The aims of this paper are to provide CORE Outcome Measure (CORE-OM) norms for the psychological health of students across multiple sites…

  9. The CORE-OM Intake Norms of Students Attending a South African University Counseling Service: A Comparison with UK Counseling Service Data

    ERIC Educational Resources Information Center

    Young, Charles

    2009-01-01

    This paper provides CORE-OM intake norms for a South African university counseling service, and compares these to the United Kingdom counseling service data reported by Connell, Barkham and Mellor-Clark (2007). The South African norms are very similar to the United Kingdom norms, with no statistical differences in the total or domain scores. There…

  10. To investigate the prevention of OM-85 on bronchiectasis exacerbations (iPROBE) in Chinese patients: study protocol for a randomized controlled trial

    PubMed Central

    2014-01-01

    Background Non-cystic fibrosis bronchiectasis is characterized by the irreversible dilatation of the medium-sized bronchi as a result of airway injury from recurrent or chronic inflammation and lower respiratory tract infections. Bronchiectasis airways are commonly colonized with bacterial species. Infections of the airways play important role in bronchiectasis exacerbations. The non-specific prevention of recurrent airway infections by immunostimulating agents has gained growing interest. OM-85, consisting of extracts of eight kinds of bacteria important in respiratory infections, could support the respiratory tract resistance to the pathogens. OM-85 has been shown to be a benefit by decreasing the risk of acute exacerbation of chronic obstructive pulmonary disease (COPD) in several perspective clinical trials. Exacerbation of bronchiectasis substantially contributes to a more rapid decline in lung function, reduced quality of life, and healthcare costs. In this context, we plan to conduct a clinical trial to investigate the PReventive effect of OM-85 on Bronchiectasis Exacerbation in Chinese patients (iPROBE). Methods/Design This study is designed as a prospective, randomized, double blind, placebo-controlled multicenter trial. A total of 244 patients with bronchiectasis, who have had at least one exacerbation of bronchiectasis in the previous year, will be included. The subjects will randomly receive two courses of 7 mg of OM-85 or a matching placebo. The treatment dose of OM-85 will be one daily capsule taken orally for 10 days each month for 3 consecutive months at the beginning of the study, followed by 3 months of no drug. This schedule will repeat until the patient has been seen for one year. Discussion We will investigate whether long-term treatment with an oral immunostimulant (OM-85) could decrease exacerbations of bronchiectasis over a one-year period. We will also assess other relevant outcomes, including the rate of event-based exacerbation, lung

  11. The radiosensitizing effect of immunoadjuvant OM-174 requires cooperation between immune and tumor cells through interferon-gamma and inducible nitric oxide synthase

    SciTech Connect

    Ridder, Mark de . E-mail: Mark.De.Ridder@vub.ac.be; Verovski, Valeri N.; Chiavaroli, Carlo; Berge, Dirk L. van den; Monsaert, Christinne; Law, Kalun; Storme, Guy A.

    2006-12-01

    Purpose: To explore whether antitumor immunoadjuvant OM-174 can stimulate immune cells to produce interferon-{gamma} (IFN-{gamma}) and thereby radiosensitize tumor cells. Methods and Materials: Splenocytes from BALB/c mice were stimulated by OM-174 at plasma-achievable concentrations (0.03-3 {mu}g/mL), and afterward analyzed for the expression and secretion of IFN-{gamma} by reverse transcriptase-polymerase chain reaction and enzyme-linked immunosorbent assay, respectively. Stimulated splenocytes were used as a source of IFN-{gamma} to radiosensitize hypoxic EMT-6 tumor cells through the cytokine-inducible isoform of nitric oxide synthase (iNOS). Results: OM-174 activated the production of IFN-{gamma} at high levels that reached 70 ng/mL in normoxia (21% oxygen) and 27 ng/mL in tumor-relevant hypoxia (1% oxygen). This caused up to 2.1-fold radiosensitization of EMT-6 tumor cells, which was associated with the iNOS-mediated production of the radiosensitizing molecule nitric oxide, as confirmed by accumulation of its oxidative metabolite nitrite, Western blot analysis, and reverse transcriptase-polymerase chain reaction. Both iNOS activation and radiosensitization were counteracted by neutralizing antibodies against IFN-{gamma}. The same mechanism of radiosensitization through the IFN-{gamma} secretion pathway was identified for IL-12 + IL-18, which are known to mediate IFN-{gamma} responses. Hypoxia displayed a dual effect on the immune-tumor cell interaction, by downregulating the expression of the IFN-{gamma} gene while upregulating iNOS at transcriptional level. Conclusion: Immunoadjuvant OM-174 is an efficient radiosensitizer of tumor cells through activation of the IFN-{gamma} secretion pathway in immune cells. This finding indicates a rationale for combining immunostimulatory and radiosensitizing strategies and extends the potential therapeutic applications of OM-174.

  12. New synthetic routes to catalytically active manganite, K-OMS-2 and K-OMS-2/silicon dioxide and a preliminary study on the use of a continuous flow microwave technique in the synthesis of nanosized manganese and cerium oxides and cobalt and iron oxyhydroxides

    NASA Astrophysics Data System (ADS)

    Crisostomo, Vincent Mark B.

    The work presented here comprises three main parts. The first part is a new route to nano-sized gamma-MnOOH (manganite). gamma-MnOOH has been synthesized via the reduction of KMnO4 with sucrose and MnSO 4 in acidic medium under refluxing conditions for four and six hours. Characterization of these manganite materials using XRD, FESEM, TEM, TGA and IR were done. The obtained manganite samples using the new route were compared against a conventionally prepared one where synthesis involved the oxidation of MnSO4 with H2O2 in basic medium. Two new synthetic methods were developed, one involving addition of KMnO4 into a solution of both sucrose and MnSO4 while the other involved addition of KMnO4 solution into sucrose followed by addition of MnSO4 (s). The latter method yielded smaller particles (up to 30 nm) than the former method (up to 80 nm) and the conventionally prepared manganite (up to 50 nm). The synthesized manganite materials exhibited promising characteristics when tested as electrocatalysts in O2 reduction. The larger particles gave higher peak currents in CV than smaller particles. When incorporated in Yardney's medium-sized lithium-air battery, the larger (up to 80 nm) particles gave higher specific capacity (up to 2.2 Ah/g), which corresponds to about 38% increase in specific energy of the battery when compared to a battery where no manganite was incorporated. The second part of the research reported here involves the synthesis of K-OMS-2 and SiO2-supported K-OMS-2. K-OMS-2 (or OMS-2 from hereon) was successfully synthesized using a reflux method where, for the first time, oxone or KHSO5 was used as the oxidant. Nano-sized fibers with widths ranging from 8--40 nm were obtained. We also report for the first time the synthesis and catalytic activity of OMS-2 supported on SiO2 with surface area ranging from 228 to 513 m2/g and weight % OMS-2 ranging from 1.0 to 13.6%. An optimization study on styrene oxidation using OMS-2 and OMS-2/SiO2 as catalysts was

  13. 75 FR 44050 - Qualification of Drivers; Exemption Applications; Vision

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  20. Chemokine/cytokine profiling after rituximab: reciprocal expression of BCA-1/CXCL13 and BAFF in childhood OMS.

    PubMed

    Pranzatelli, Michael R; Tate, Elizabeth D; Travelstead, Anna L; Verhulst, Steven J

    2011-03-01

    The aim of the study was to test the hypothesis that B-cell repopulation following rituximab (anti-CD20) therapy is orchestrated by chemokines and non-chemokine cytokines. Twenty-five children with opsoclonus-myoclonus syndrome (OMS) received rituximab with or without conventional agents. A comprehensive panel of 40 chemokines and other cytokines were measured in serum by ELISA and multiplexed fluorescent bead-based immunoassay. Serum BAFF concentration changed dramatically (even after first infusion) and inversely with B-cell depletion/repopulation and CXCL13 concentration at 1, 3, and 6 months. Negative correlations were found for BAFF concentration vs blood B cell percentage and serum CXCL13 concentration; positive correlations with serum rituximab concentrations. Six months after initiation of therapy, no significant difference in the levels of APRIL, CXCL10, IL-6, or 17 other cytokines/chemokines were detected. These data reveal a major role for BAFF in peripheral B cell repopulation following rituximab-induced B-cell depletion, and novel changes in CXCL13. ClinicalTrials.gov NCT0024436. PMID:21211990

  1. Post-irradiation effect of Broncho-Vaxom, OM-85 BV, and its relationship to anti-oxidant activities.

    PubMed

    Saada, H N; Azab, K S; Zahran, A M

    2001-08-01

    This study was conducted to test the efficacy of Broncho-Vaxom (OM-85 BV) in rats after exposure to radiation-induced oxidative stress. Daily administration of Broncho-Vaxom (2.5 mg/kg/day) to rats for a period of 28 days produced a progressive significant increase in the activities of superoxide dismutase (SOD) and catalase in lungs and erythrocytes. No changes were recorded in reduced glutathione (GSH) content in lungs, while an increase was recorded in erythrocytes. Significant increase was also observed in serum gamma-globulin content. Intraperitoneal administration of Broncho-Vaxom to rats for 11 days before gamma-irradiation and daily during the period of irradiation, delivered as 1 Gy every other day to reach 9 Gy, significantly reduced radiation-induced lipid peroxidation (LPO) measured as thiobarbituric acid-reactive substances (TBARS) in the lungs and erythrocytes. Treatment with Broncho-Vaxom modified the radiation-induced decrease of serum gamma-globulins contents. It is postulated that Broncho-Vaxom, by enhancing the antioxidant system and increasing serum gamma-globulin content, could play an important role in modifying radiation-induced oxidative stress. PMID:11534345

  2. Growth of InSb and InAs(1-x)Sb(x) by OM-CVD

    NASA Technical Reports Server (NTRS)

    Chiang, P. K.; Bedair, S. M.

    1984-01-01

    Organometallic chemical vapor deposition (OM-CVD) growth of InSb and InAs(1-x)Sb(x) has been obtained using triethylindium (TEI), trimethylantimony (TMS), and arsine (AsH3) on (100) GaAs, (100) InSb, and (111)-B InSb substrates. InSb with excellent morphology was achieved on both (100) InSb and (111)-B InSb substrates. The measured electron mobility at 300 K of undoped InSb grown on (100) GaAs semi-insulating substrates was 40,000 sq cm/V-s at a carrier concentration of ND-NA = 2.0 x 10 to the 16th per cu cm. Carrier concentration of ND-NA = 1.2 x 10 to the 15th per cu cm has been measured at 77 K. InAs(1-x)Sb(x) (x = 0.07-0.75) with mirror-like surfaces have been grown on (100) InSb and InAs substrates. This composition range of x between 0.55 and 0.75 (Eg = 0.1 eV) has been successfully achieved for the first time. Solid composition variations as a function of growth temperature and InSb substrate orientations are also discussed.

  3. Metroplex Optimization Model Expansion and Analysis: The Airline Fleet, Route, and Schedule Optimization Model (AFRS-OM)

    NASA Technical Reports Server (NTRS)

    Sherry, Lance; Ferguson, John; Hoffman, Karla; Donohue, George; Beradino, Frank

    2012-01-01

    This report describes the Airline Fleet, Route, and Schedule Optimization Model (AFRS-OM) that is designed to provide insights into airline decision-making with regards to markets served, schedule of flights on these markets, the type of aircraft assigned to each scheduled flight, load factors, airfares, and airline profits. The main inputs to the model are hedged fuel prices, airport capacity limits, and candidate markets. Embedded in the model are aircraft performance and associated cost factors, and willingness-to-pay (i.e. demand vs. airfare curves). Case studies demonstrate the application of the model for analysis of the effects of increased capacity and changes in operating costs (e.g. fuel prices). Although there are differences between airports (due to differences in the magnitude of travel demand and sensitivity to airfare), the system is more sensitive to changes in fuel prices than capacity. Further, the benefits of modernization in the form of increased capacity could be undermined by increases in hedged fuel prices

  4. Proteome and Membrane Fatty Acid Analyses on Oligotropha carboxidovorans OM5 Grown under Chemolithoautotrophic and Heterotrophic Conditions

    PubMed Central

    Paul, Debarati; Kumar, Ranjit; Nanduri, Bindu; French, Todd; Pendarvis, Ken; Brown, Ashli; Lawrence, Mark L.; Burgess, Shane C.

    2011-01-01

    Oligotropha carboxidovorans OM5 T. (DSM 1227, ATCC 49405) is a chemolithoautotrophic bacterium able to utilize CO and H2 to derive energy for fixation of CO2. Thus, it is capable of growth using syngas, which is a mixture of varying amounts of CO and H2 generated by organic waste gasification. O. carboxidovorans is capable also of heterotrophic growth in standard bacteriologic media. Here we characterize how the O. carboxidovorans proteome adapts to different lifestyles of chemolithoautotrophy and heterotrophy. Fatty acid methyl ester (FAME) analysis of O. carboxidovorans grown with acetate or with syngas showed that the bacterium changes membrane fatty acid composition. Quantitative shotgun proteomic analysis of O. carboxidovorans grown in the presence of acetate and syngas showed production of proteins encoded on the megaplasmid for assimilating CO and H2 as well as proteins encoded on the chromosome that might have contributed to fatty acid and acetate metabolism. We found that adaptation to chemolithoautotrophic growth involved adaptations in cell envelope, oxidative homeostasis, and metabolic pathways such as glyoxylate shunt and amino acid/cofactor biosynthetic enzymes. PMID:21386900

  5. Robust and tunable 16.375Gb/s dual-band optical OFDM transmissions over directly modulated VCSEL-based 200m OM2 MMFs.

    PubMed

    Deng, M L; Jiang, N; Duan, X; Giddings, R P; Yi, X W; Cao, B Y; Mansoor, S; Qiu, K; Tang, J M

    2015-01-12

    Utilizing low-cost, 2.2GHz modulation bandwidth, uncooled and standalone directly modulated VCSEL (DM-VCSEL)-based real-time dual-band optical OFDM (OOFDM) transmitters, aggregated 16.375Gb/s transmissions of OOFDM signals having bandwidths approximately 3.8 times higher than the VCSEL manufacturer-specified modulation bandwidths, are experimentally demonstrated, for the first time, over 200m OM2 MMF links based on intensity modulation and direct detection. The aggregated signal transmission capacities of the aforementioned links vary by just 8% for various OM2 MMFs ranging from 100m to 500m, and by just 10% over a 1GHz passband carrier frequency detuning range. Such dual-band OOFDM adaptability-induced excellent performance robustness and large passband frequency tunability can significantly relax the requirements on VCSEL modulation bandwidth for achieving specific transmission performances for cost-sensitive application scenarios such as data centers. PMID:25835683

  6. High Field Optomagnetic (OM) Polarization-Phase Selective (PPS) Monitoring of Structures and Controlling Reaction Agents Mechanisms in Complex Molecular Systems

    NASA Astrophysics Data System (ADS)

    Rupnik, Kresimir

    2014-03-01

    Using OM techniques, including new high filed 25T Split-Florida magnet at NHMF Laboratory, we have recently observed unusual metal cluster structures and electron transfer patterns in complex molecular systems of biomedical and material science interest. We report here some of the new technological solutions and (many) challenges that face OM and (quantum) control research. Of particular interest is identification of fast (10-100s fs) highly correlated electrons spin and vibrational coupling interpreted using adaptive molecular-photonic interaction models. Our observations question interpretations of previously proposed electron spin structure models and mechanisms and\\ indicate possible new controlling mechanisms through highly selective coupled channels that combine different specific redox and photonic agents. A portion of this work from 2008 to 2013 was performed at the National High Magnetic Field Laboratory, which is supported by National Science Foundation Cooperative Agreement No. DMR-1157490, and 0654118 and the U.S. Department of Energy.

  7. 75 FR 5545 - Explosives

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-03

    ... its Explosives and Blasting Agents Standard at 29 CFR 1910.109 (36 FR 10553-10562). OSHA based the... revisions to the standard (37 FR 6577, 57 FR 6356, and 63 FR 33450). On July 29, 2002, the Institute of... revision (72 FR 18792). On July 17, 2007, however, OSHA closed the comment period, stating that it...

  8. Preventive treatment of chronic bronchitis: a meta-analysis of clinical trials with a bacterial extract (OM-85 BV) and a cost-effectiveness analysis.

    PubMed

    Bergemann, R; Brandt, A; Zoellner, U; Donner, C F

    1994-09-01

    Chronic bronchitis is a lifelong disease with significant effects on the patient and on the costs to health insurance institutions. Acute exacerbations in chronic bronchitic patients may have a negative impact on patients' quality of life and on the progression of the disease, particularly in more severe patients. The clinical efficacy of the immunoactive bacterial extract OM-85 BV has been shown in several clinical trials, a cost-effectiveness evaluation (CEA) of its use in chronic bronchitic patients has not been fulfilled so far. In this study a meta-analysis on the preventive treatment of acute exacerbations with OM-85 BV and a CEA, focusing on direct costs only, was performed. The meta-analysis showed a mean value of 0.6 prevented acute exacerbations per 6 months per patient, and a reduction of 9 days in antibiotic treatment per 6 months per patient. CEA evaluated the different cost elements. The mean direct cost (consultations, antibiotics, etc.) for the treatment of 1 acute exacerbation in chronic bronchitic patients was calculated as 143, 459 Lira. Thus for 0.6 prevented acute exacerbations per 6 months per patient a reduction in cost of 86,075 Lira (0.6-143,459) could be expected. The additional costs for the preventive treatment with OM-85 BV, based on prices for Italy, are 34,980 Lira per patient per 6 months. In conclusion, the effective cost savings per patient per 6 months are 51, 095 Lira. The sensitivity analysis revealed only one critical parameter, i.e. the clinical effectiveness of OM-85 BV. Even assuming 0.3 prevented exacerbations per 6 months per patient, the preventive treatment still proved to be cost effective. PMID:8000415

  9. Reliability and Validity of the Telephone Administration of the Wheelchair Outcome Measure (WhOM) for Middle-Aged and Older Users of Power Mobility Devices

    PubMed Central

    Auger, Claudine; Demers, Louise; Gélinas, Isabelle; Routhier, François; Ben Mortenson, W.; Miller, William C

    2014-01-01

    Objective To examine the measurement properties of the telephone administration of the Wheelchair Outcome Measure (WhOM). Subjects Power mobility device users aged 50–89 years. Methods Two independent cohorts were recruited: 1) a prospective cohort (n=40) to estimate test-retest reliability and to determine the applicability of the telephone format, and 2) a cross-sectional cohort to examine construct validity with 3 groups: i) people waiting for a first power mobility device (n=44); ii) new users (n=35;1–6 months), and iii) long-term users (n=39;12–18 months). Results The tool demonstrated good test-retest reliability (ICCs .77–1.00), was administered in 10.9 minutes (SD=5.2) and was practical to use over the telephone. The validity testing showed moderate correlations with the Quebec User Evaluation of Satisfaction with Technology (QUEST 2.0, rS=.36–.45) and the Psychosocial Impact of Assistive Devices Scale (PIADS-10, rS=31–.43). WhOM scores could discriminate users based on duration of use (p<.001) and device type (power wheelchair vs scooter, p<.05). Conclusions The WhOM is a stable, valid and applicable measure for telephone administration with older power mobility device users. It is moderately linked to satisfaction with the device and to the psychosocial impact of the device, and therefore complements rather than replaces those measures. PMID:20549163

  10. Novel synthesis of manganese and vanadium mixed oxide (V{sub 2}O{sub 5}/OMS-2) as an efficient and selective catalyst for the oxidation of alcohols in liquid phase

    SciTech Connect

    Mahdavi, Vahid Soleimani, Shima

    2014-03-01

    Graphical abstract: Oxidation of various alcohols is studied in the liquid phase over new composite mixed oxide (V{sub 2}O{sub 5}/OMS-2) catalyst using tert-butyl hydroperoxide (TBHP). The activity of V{sub 2}O{sub 5}/OMS-2 samples was considerably increased with respect to OMS-2 catalyst and these samples are found to be suitable for the selective oxidation of alcohols. - Highlights: • V{sub 2}O{sub 5}/K-OMS-2 with different V/Mn molar ratios prepared by the impregnation method. • Oxidation of alcohols was studied in the liquid phase over V{sub 2}O{sub 5}/K-OMS-2 catalyst. • V{sub 2}O{sub 5}/K-OMS-2 catalyst had excellent activity for alcohol oxidation. • Benzyl alcohol oxidation using excess TBHP followed a pseudo-first order kinetic. • The selected catalyst was reused without significant loss of activity. - Abstract: This work reports the synthesis and characterization of mixed oxide vanadium–manganese V{sub 2}O{sub 5}/K-OMS-2 at various V/Mn molar ratios and prepared by the impregnation method. Characterization of these new composite materials was made by elemental analysis, BET, XRD, FT-IR, SEM and TEM techniques. Results of these analyses showed that vanadium impregnated samples contained mixed phases of cryptomelane and crystalline V{sub 2}O{sub 5} species. Oxidation of various alcohols was studied in the liquid phase over the V{sub 2}O{sub 5}/K-OMS-2 catalyst using tert-butyl hydroperoxide (TBHP) and H{sub 2}O{sub 2} as the oxidant. Activity of the V{sub 2}O{sub 5}/K-OMS-2 samples was increased considerably with respect to K-OMS-2 catalyst due to the interaction of manganese oxide and V{sub 2}O{sub 5}. The kinetic of benzyl alcohol oxidation using excess TBHP over V{sub 2}O{sub 5}/K-OMS-2 catalyst was investigated at different temperatures and a pseudo-first order reaction was determined with respect to benzyl alcohol. The effects of reaction time, oxidant/alcohol molar ratio, reaction temperature, solvents, catalyst recycling potential and

  11. Seasonal and spatial variability of the OM/OC mass ratios and high regional correlation between oxalic acid and zinc in Chinese urban organic aerosols

    NASA Astrophysics Data System (ADS)

    Xing, L.; Fu, T.-M.; Cao, J. J.; Lee, S. C.; Wang, G. H.; Ho, K. F.; Cheng, M.-C.; You, C.-F.; Wang, T. J.

    2013-04-01

    We calculated the organic matter to organic carbon mass ratios (OM/OC mass ratios) in PM2.5 collected from 14 Chinese cities during summer and winter of 2003 and analyzed the causes for their seasonal and spatial variability. The OM/OC mass ratios were calculated two ways. Using a mass balance method, the calculated OM/OC mass ratios averaged 1.92 ± 0.39 year-round, with no significant seasonal or spatial variation. The second calculation was based on chemical species analyses of the organic compounds extracted from the PM2.5 samples using dichloromethane/methanol and water. The calculated OM/OC mass ratio in summer was relatively high (1.75 ± 0.13) and spatially-invariant due to vigorous photochemistry and secondary organic aerosol (OA) production throughout the country. The calculated OM/OC mass ratio in winter (1.59 ± 0.18) was significantly lower than that in summer, with lower values in northern cities (1.51 ± 0.07) than in southern cities (1.65 ± 0.15). This likely reflects the wider usage of coal for heating purposes in northern China in winter, in contrast to the larger contributions from biofuel and biomass burning in southern China in winter. On average, organic matter constituted 36% and 34% of Chinese urban PM2.5 mass in summer and winter, respectively. We report, for the first time, a high regional correlation between Zn and oxalic acid in Chinese urban aerosols in summer. This is consistent with the formation of stable Zn oxalate complex in the aerosol phase previously proposed by Furukawa and Takahashi (2011). We found that many other dicarboxylic acids were also highly correlated with Zn in the summer Chinese urban aerosol samples, suggesting that they may also form stable organic complexes with Zn. Such formation may have profound implications for the atmospheric abundance and hygroscopic properties of aerosol dicarboxylic acids.

  12. 77 FR 67816 - Proposed Agency Information Collection Activities; Comment Request

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  13. 77 FR 36338 - Qualification of Drivers; Exemption Applications; Vision

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    2012-06-18

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  14. 78 FR 11731 - Qualification of Drivers; Exemption Applications; Vision

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    2013-02-19

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  15. 76 FR 40052 - Regulatory Agenda

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-07

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  16. OM/OC Ratio and Specific Attenuation Coefficient in Ambient Particulate Matter at a Rural Site in Southern Ontario: Implications for Aerosol Aging and Emission Sources

    NASA Astrophysics Data System (ADS)

    Chan, T. W.; Huang, L.; Leaitch, R.; Sharma, S.; Brook, J.; Slowik, J.; Abbatt, J.

    2008-05-01

    Carbonaceous species (organic carbon (OC) and elemental carbon (EC)) contribute a large portion of atmospheric fine particle mass and influence air quality, human health, and climate forcing. However, their emission sources and atmospheric aging processes are not well understood. The OM/OC ratio, defined as the organic mass per unit OC mass, is useful to understand the degree of oxidation of aerosol particles in atmospheric processes. We define the modified BC/EC (mod BC/EC) ratio as the ratio of the non-scattering corrected absorption coefficient per unit mass of EC. The mod BC/EC ratio has a similar meaning as the site specific attenuation coefficient, which is an important parameter used to convert light absorption measurements to black carbon mass. The mod BC/EC ratio can vary due to light scattering effect on absorption measurements, in which the oxygenated organics may play a role. The pyrolysis organic carbon (POC) is defined as the carbon mass fraction obtained at T= 870°C under a pure helium environment using the thermal separation method [Huang et al., 2006]. Since POC mass is generally proportional to the amount of oxygenated OC, studying the relationships among OC, EC, POC, as well as OM/OC and mod BC/EC ratios may help us understand the mechanisms of aerosol aging from different emission sources. Two 1-month field studies were conducted at a rural site in southern Ontario (NW of Toronto) during fall 2005 and spring 2007. Quartz filter samples were collected and analyzed for OC, POC, and EC concentrations using a thermal/optical method [Huang et al., 2006]. Together with the total organic matter measured by an Aerodyne Aerosol Mass Spectrometer (AMS) and the absorption coefficient obtained from a Particle Soot Absorption Photometer (PSAP), the OM/OC and mod BC/EC ratios for ambient aerosols were obtained. Our results show that when air mass was mainly from south, OC, POC, and EC were relatively high, with average ratios of OC/EC, OM/OC, and POC/EC as 1

  17. Comprehensive Genomic Analyses of the OM43 Clade, Including a Novel Species from the Red Sea, Indicate Ecotype Differentiation among Marine Methylotrophs

    PubMed Central

    Jimenez-Infante, Francy; Ngugi, David Kamanda; Vinu, Manikandan; Alam, Intikhab; Kamau, Allan Anthony; Blom, Jochen; Bajic, Vladimir B.

    2015-01-01

    The OM43 clade within the family Methylophilaceae of Betaproteobacteria represents a group of methylotrophs that play important roles in the metabolism of C1 compounds in marine environments and other aquatic environments around the globe. Using dilution-to-extinction cultivation techniques, we successfully isolated a novel species of this clade (here designated MBRS-H7) from the ultraoligotrophic open ocean waters of the central Red Sea. Phylogenomic analyses indicate that MBRS-H7 is a novel species that forms a distinct cluster together with isolate KB13 from Hawaii (Hawaii-Red Sea [H-RS] cluster) that is separate from the cluster represented by strain HTCC2181 (from the Oregon coast). Phylogenetic analyses using the robust 16S-23S internal transcribed spacer revealed a potential ecotype separation of the marine OM43 clade members, which was further confirmed by metagenomic fragment recruitment analyses that showed trends of higher abundance in low-chlorophyll and/or high-temperature provinces for the H-RS cluster but a preference for colder, highly productive waters for the HTCC2181 cluster. This potential environmentally driven niche differentiation is also reflected in the metabolic gene inventories, which in the case of the H-RS cluster include those conferring resistance to high levels of UV irradiation, temperature, and salinity. Interestingly, we also found different energy conservation modules between these OM43 subclades, namely, the existence of the NADH:quinone oxidoreductase complex I (NUO) system in the H-RS cluster and the nonhomologous NADH:quinone oxidoreductase (NQR) system in the HTCC2181 cluster, which might have implications for their overall energetic yields. PMID:26655752

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