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Sample records for lyndon johnson space

  1. Lyndon B. Johnson Space Center (JSC) proposed dual-use technology investment program in intelligent robots

    Science.gov (United States)

    Erikson, Jon D.

    1994-01-01

    This paper presents an overview of the proposed Lyndon B. Johnson Space Center (JSC) precompetitive, dual-use technology investment project in robotics. New robotic technology in advanced robots, which can recognize and respond to their environments and to spoken human supervision so as to perform a variety of combined mobility and manipulation tasks in various sectors, is an obejective of this work. In the U.S. economy, such robots offer the benefits of improved global competitiveness in a critical industrial sector; improved productivity by the end users of these robots; a growing robotics industry that produces jobs and profits; lower cost health care delivery with quality improvements; and, as these 'intelligent' robots become acceptable throughout society, an increase in the standard of living for everyone. In space, such robots will provide improved safety, reliability, and productivity as Space Station evolves, and will enable human space exploration (by human/robot teams). The proposed effort consists of partnerships between manufacturers, universities, and JSC to develop working production prototypes of these robots by leveraging current development by both sides. Currently targeted applications are in the manufacturing, health care, services, and construction sectors of the U.S. economy and in the inspection, servicing, maintenance, and repair aspects of space exploration. But the focus is on the generic software architecture and standardized interfaces for custom modules tailored for the various applications allowing end users to customize a robot as PC users customize PC's. Production prototypes would be completed in 5 years under this proposal.

  2. Understanding Presidential Rhetoric: The Vietnam Statements of Lyndon Johnson

    Science.gov (United States)

    Sigelman, Lee; Miller, Lawrence

    1978-01-01

    Focuses on Lyndon Johnson's public statements about Vietnam during the final eighteen months of his presidency in an attempt to gain a perspective on the factors which shape presidential rhetoric. (MH)

  3. Lyndon B. Johnson and the Civil Right Act of 1964

    OpenAIRE

    Karatzas Konstantinos D.

    2016-01-01

    The Civil Rights Movement is deeply intertwined with Lyndon B. Johnson. Throughout his career, Johnson supported the quest of African-Americans for political and civil rights. They found in him an ally whose role was fundamental in fullfilling the goals of Martin Luther King, Jr, and the Civil Rights Movement. This paper will examine the role of the Johnson presidency in the passage of the Civil Rights Acts of 1957 and 1964.

  4. Lyndon B. Johnson and the Civil Right Act of 1964

    Directory of Open Access Journals (Sweden)

    Karatzas Konstantinos D.

    2016-09-01

    Full Text Available The Civil Rights Movement is deeply intertwined with Lyndon B. Johnson. Throughout his career, Johnson supported the quest of African-Americans for political and civil rights. They found in him an ally whose role was fundamental in fullfilling the goals of Martin Luther King, Jr, and the Civil Rights Movement. This paper will examine the role of the Johnson presidency in the passage of the Civil Rights Acts of 1957 and 1964.

  5. Patronage power: Rural electrification, river development, and Lyndon Johnson (1937--1939)

    Science.gov (United States)

    Dusek, Paul-Michael Mays

    Few historians document Lyndon Johnson's efforts to construct a state-wide political machine at the local level early in his congressional career. The literature glorifies Johnson for hydroelectric river development and rural electrification. This thesis acknowledges the transformative nature of rural electrification in Central Texas through the efforts of Johnson but, more importantly, reveals how extensively Johnson sought to capitalize on the tail-end of the New Deal to utilize government-funded relief projects to establish a state-wide political machine. An analysis of the correspondence between Johnson, his local political operators, members of his state-wide network, and rural constituents reveals another layer to the complexity of Johnson and further exposes his ambitious, calculating nature. Johnson used rural electrification to first create a community of supporters in his congressional district then used rural electrification and multipurpose river development programs to cultivate political contacts across the state of Texas. This thesis explores the first time that Lyndon Johnson used patronage to develop a political community as a publicly elected official. Johnson pushed for constant expansion of operations to ensure a steady supply of new jobs while displaying a cavalier attitude about specific regulations regarding the allocation of funds. His machine manipulated and massaged congressional appropriations restrictions and utilized multiple congressional revenue streams to stretch finances further and lower overhead costs to increase the scope of operations thus further improving the lives of his constituents. Johnson also used this movement to efficiently and effectively construct a foundation for his political machine. This thesis also clarifies an early moment in Johnson's beliefs about civil rights. Instead of standing on principle, Johnson relied on extortion and threats to fight racism at this early juncture in his political career because of

  6. Lyndon Baines Johnson and the Presidential Election Campaign of 1964: A Case Study of Presidential Leadership for Education.

    Science.gov (United States)

    Boone, Michael

    By keeping his campaign promises, President Lyndon Johnson transformed the U.S. educational system for the next 30 years. His legislative achievements in education were consistent with his campaign promises and with policy statements stretching back into his career as U.S. Senate Majority Leader. Johnson was a major contributor to the passage of…

  7. Spatial Vegetation Data for Lyndon B. Johnson National Historical Park Vegetation Mapping Project

    Data.gov (United States)

    National Park Service, Department of the Interior — his metadata is for the vegetation and land-use geo-spatial database for Lydon B. Johnson National Historical Site and surrounding areas. This project is authorized...

  8. Renewable Energy at NASA's Johnson Space Center

    Science.gov (United States)

    McDowall, Lindsay

    2014-01-01

    NASA's Johnson Space Center has implemented a great number of renewable energy systems. Renewable energy systems are necessary to research and implement if we humans are expected to continue to grow and thrive on this planet. These systems generate energy using renewable sources - water, wind, sun - things that we will not run out of. Johnson Space Center is helping to pave the way by installing and studying various renewable energy systems. The objective of this report will be to examine the completed renewable energy projects at NASA's Johnson Space Center for a time span of ten years, beginning in 2003 and ending in early 2014. This report will analyze the success of each project based on actual vs. projected savings and actual vs. projected efficiency. Additionally, both positive and negative experiences are documented so that lessons may be learned from past experiences. NASA is incorporating renewable energy wherever it can, including into buildings. According to the 2012 JSC Annual Sustainability Report, there are 321,660 square feet of green building space on JSC's campus. The two projects discussed here are major contributors to that statistic. These buildings were designed to meet various Leadership in Energy and Environmental Design (LEED) Certification criteria. LEED Certified buildings use 30 to 50 percent less energy and water compared to non-LEED buildings. The objectives of this project were to examine data from the renewable energy systems in two of the green buildings onsite - Building 12 and Building 20. In Building 12, data was examined from the solar photovoltaic arrays. In Building 20, data was examined from the solar water heater system. By examining the data from the two buildings, it could be determined if the renewable energy systems are operating efficiently. Objectives In Building 12, the data from the solar photovoltaic arrays shows that the system is continuously collecting energy from the sun, as shown by the graph below. Building 12

  9. Roads (Johnson City)

    Data.gov (United States)

    National Park Service, Department of the Interior — This is a vector line file showing the location of existing NPS roads including access roads for which the park has an easement at Lyndon B. Johnson National...

  10. NASA Johnson Space Center's Energy and Sustainability Efforts

    Science.gov (United States)

    Ewert, Michael K.

    2008-01-01

    This viewgraph presentation reviews the efforts that NASA is making to assure a sustainable environment and energy savings at the Johnson Space Center. Sustainability is defined as development that meets the needs of present generations without compromising the ability of future generations to meet their own needs. The new technologies that are required for sustainable closed loop life support for space exploration have uses on the ground to reduce energy, greenhouse gas emissions, and water use. Some of these uses are reviewed.

  11. Johnson Space Center Flight Medicine Clinic Experience

    Science.gov (United States)

    Landry, Trela

    2006-01-01

    Being a member of the Flight Medicine Clinic (FMC) Staff is a great experience. I joined the FMC staff 2 years ago when I became part of the Kelsey-Seybold team. The FMC staff consists of Flight Surgeons, Family Clinic Physician, Nursing staff, Wellness Coordinator and Support staff. We serve as the Primary Care Physicians for the astronauts and their families and provide annual physicals for the retired astronauts. We have approximately 800 patients in the FMC. As the Family Clinic Physician, I care for the astronaut spouses and children and provide annual physicals for the retired astronauts. Since we have a small patient population, we have the opportunity to spend increased personal time with our patients, which I enjoy. We have a pretty healthy patient population, who are very interested in their overall health and preventive care. In preparation for a shuttle launch, our nursing staff assists the flight surgeons with the astronaut physical exams, which occur 10 days prior to launch and again 3 days after their return. We also provide Primary Contact physicals for the families and guests, who will be in close contact with shuttle crew members. During these physicals, we provide education, emphasizing the importance of preventing the spread of communicable diseases to shuttle crew members. Being a part of the Space Medicine Program is an honor. To know that you contribute in some way to our nation s Space Program is very special. (This article was prepared by Dr. Trela Landry, M.D. for inclusion in a Kelsey-Seybold newsletter on 25 OCT 2006.)

  12. Taxonomy, Ontology and Semantics at Johnson Space Center

    Science.gov (United States)

    Berndt, Sarah Ann

    2011-01-01

    At NASA Johnson Space Center (JSC), the Chief Knowledge Officer has been developing the JSC Taxonomy to capitalize on the accomplishments of yesterday while maintaining the flexibility needed for the evolving information environment of today. A clear vision and scope for the semantic system is integral to its success. The vision for the JSC Taxonomy is to connect information stovepipes to present a unified view for information and knowledge across the Center, across organizations, and across decades. Semantic search at JSC means seemless integration of disparate information sets into a single interface. Ever increasing use, interest, and organizational participation mark successful integration and provide the framework for future application.

  13. Affirmative action as organization development at the Johnson Space Center

    Science.gov (United States)

    Tryman, Mfanya Donald L.

    1987-01-01

    The role of affirmative actions is investigated as an interventionist Organization Development (OD) strategy for insuring equal opportunities at the NASA/Johnson Space Center. In doing so, an eclectic and holistic model is developed for the recruiting and hiring of minorities and females over the next five years. The strategy, approach, and assumptions for the model are quite different than those for JSC's five year plan. The study concludes that Organization development utilizing affirmative action is a valid means to bring about organizational change and renewal processes, and that an eclectic model of affirmative action is most suitable and rational in obtaining this end.

  14. History of the Animal Care Program at Johnson Space Center

    Science.gov (United States)

    Khan-Mayberry, Noreen; Bassett, Stephanie

    2010-01-01

    NASA has a rich history of scientific research that has been conducted throughout our numerous manned spaceflight programs. This scientific research has included animal test subjects participating in various spaceflight missions, including most recently, Space Shuttle mission STS-131. The Animal Care Program at Johnson Space Center (JSC) in Houston, Texas is multi-faceted and unique in scope compared to other centers within the agency. The animal care program at JSC has evolved from strictly research to include a Longhorn facility and the Houston Zoo's Attwater Prairie Chicken refuge, which is used to help repopulate this endangered species. JSC is home to more than 300 species of animals including home of hundreds of white-tailed deer that roam freely throughout the center which pose unique issues in regards to population control and safety of NASA workers, visitors and tourists. We will give a broad overview of our day to day operations, animal research, community outreach and protection of animals at NASA Johnson Space Center.

  15. Robotic Technology Efforts at the NASA/Johnson Space Center

    Science.gov (United States)

    Diftler, Ron

    2017-01-01

    The NASA/Johnson Space Center has been developing robotic systems in support of space exploration for more than two decades. The goal of the Center's Robotic Systems Technology Branch is to design and build hardware and software to assist astronauts in performing their mission. These systems include: rovers, humanoid robots, inspection devices and wearable robotics. Inspection systems provide external views of space vehicles to search for surface damage and also maneuver inside restricted areas to verify proper connections. New concepts in human and robotic rovers offer solutions for navigating difficult terrain expected in future planetary missions. An important objective for humanoid robots is to relieve the crew of "dull, dirty or dangerous" tasks allowing them more time to perform their important science and exploration missions. Wearable robotics one of the Center's newest development areas can provide crew with low mass exercise capability and also augment an astronaut's strength while wearing a space suit. This presentation will describe the robotic technology and prototypes developed at the Johnson Space Center that are the basis for future flight systems. An overview of inspection robots will show their operation on the ground and in-orbit. Rovers with independent wheel modules, crab steering, and active suspension are able to climb over large obstacles, and nimbly maneuver around others. Humanoid robots, including the First Humanoid Robot in Space: Robonaut 2, demonstrate capabilities that will lead to robotic caretakers for human habitats in space, and on Mars. The Center's Wearable Robotics Lab supports work in assistive and sensing devices, including exoskeletons, force measuring shoes, and grasp assist gloves.

  16. Carbon Nanotube Activities at NASA-Johnson Space Center

    Science.gov (United States)

    Arepalli, Sivaram

    2006-01-01

    Research activities on carbon nanotubes at NASA-Johnson Space Center include production, purification, characterization and their applications for human space flight. In-situ diagnostics during nanotube production by laser oven process include collection of spatial and temporal data of passive emission and laser induced fluorescence from C2, C3 and Nickel atoms in the plume. Details of the results from the "parametric study" of the pulsed laser ablation process indicate the effect of production parameters including temperature, buffer gas, flow rate, pressure, and laser fluence. Improvement of the purity by a variety of steps in the purification process is monitored by characterization techniques including SEM, TEM, Raman, UV-VIS-NIR and TGA. A recently established NASA-JSC protocol for SWCNT characterization is undergoing revision with feedback from nanotube community. Efforts at JSC over the past five years in composites have centered on structural polymednanotube systems. Recent activities broadened this focus to multifunctional materials, supercapacitors, fuel cells, regenerable CO2 absorbers, electromagnetic shielding, radiation dosimetry and thermal management systems of interest for human space flight. Preliminary tests indicate improvement of performance in most of these applications because of the large surface area as well as high electrical and thermal conductivity exhibited by SWCNTs.

  17. Nanomaterials Work at NASA-Johnson Space Center

    Science.gov (United States)

    Arepalli, Sivaram

    2005-01-01

    Nanomaterials activities at NASA-Johnson Space Center focus on single wall carbon nanotube production, characterization and their applications for aerospace. Nanotubes are produced by arc and laser methods and the growth process is monitored by in-situ diagnostics using time resolved passive emission and laser induced fluorescence of the active species. Parametric study of both these processes are conducted to monitor the effect of production parameters including temperature, buffer gas, flow rate, pressure, laser fluence and arc current. Characterization of the nanotube material is performed using the NASA-JSC protocol developed by combining analytical techniques of SEM, TEM, UV-VIS-NIR absorption, Raman, and TGA. Efforts at JSC over the past five years in composites have centered on structural polymernanotube systems. Recent activities broadened this focus to multifunctional materials, supercapacitors, fuel cells, regenerable CO2 absorbers, electromagnetic shielding, radiation dosimetry and thermal management systems of interest for human space flight. Preliminary tests indicate improvement of performance in most of these applications because of the large surface area as well as high conductivity exhibited by SWCNTs.

  18. Common front end systems for Space Shuttle and Space Station control centers at Johnson Space Center

    Science.gov (United States)

    Uljon, Linda; Muratore, John

    1993-03-01

    In the beginning of the fiscal year 1992, the development organizations of Johnson Space Center (JSC) were poised to begin two major projects: the Space Station Control Center and the refurbishment of the telemetry processing area of the Space Shuttle Mission Control Center. A study team established that a common front end concept could be used and could reduce development costs for both projects. A standard processor was defined to support most of the front end functions of both control centers and supports a consolidation of control positions which effectively reduces operations cost. This paper defines that common concept and describes the progress that has been made in development of the Consolidated Communications Facility (CCF) during the past year.

  19. Johnson Space Center's Regenerative Life Support Systems Test Bed

    Science.gov (United States)

    Barta, D. J.; Henninger, D. L.

    1996-01-01

    The Regenerative Life Support Systems (RLSS) Test Bed at NASA's Johnson Space Center is an atmospherically closed, controlled environment facility for human testing of regenerative life support systems using higher plants in conjunction with physicochemical life support systems. The facility supports NASA's Advanced Life Support (ALS) Program. The facility is comprised of two large scale plant growth chambers, each with approximately 11 m^2 growing area. The root zone in each chamber is configurable for hydroponic or solid media plant culture systems. One of the two chambers, the Variable Pressure Growth Chamber (VPGC), is capable of operating at lower atmospheric pressures to evaluate a range of environments that may be used in a planetary surface habitat; the other chamber, the Ambient Pressure Growth Chamber (APGC) operates at ambient atmospheric pressure. The air lock of the VPGC is currently being outfitted for short duration (1 to 15 day) human habitation at ambient pressures. Testing with and without human subjects will focus on 1) integration of biological and physicochemical air and water revitalization systems; 2) effect of atmospheric pressure on system performance; 3) planetary resource utilization for ALS systems, in which solid substrates (simulated planetary soils or manufactured soils) are used in selected crop growth studies; 4) environmental microbiology and toxicology; 5) monitoring and control strategies; and 6) plant growth systems design. Included are descriptions of the overall design of the test facility, including discussions of the atmospheric conditioning, thermal control, lighting, and nutrient delivery systems.

  20. NASA Johnson Space Center SBIR STTR Program Technology Innovations

    Science.gov (United States)

    Krishen, Kumar

    2007-01-01

    The Small Business Innovation Research (SBIR) Program increases opportunities for small businesses to participate in research and development (R&D), increases employment, and improves U.S. competitiveness. Specifically the program stimulates U.S. technological innovation by using small businesses to meet federal R&D needs, increasing private-sector commercialization of innovations derived from federal R&D, and fostering and encouraging the participation of socially disadvantaged businesses. In 2000, the Small Business Technology Transfer (STTR) Program extended and strengthened the SBIR Program, increasing its emphasis on pursuing commercial applications by awarding contracts to small business concerns for cooperative R&D with a nonprofit research institution. Modeled after the SBIR Program, STTR is nevertheless a separately funded activity. Technologies that have resulted from the Johnson Space Center SBIR STTR Program include: a device for regenerating iodinated resin beds; laser-assisted in-situ keratomileusis or LASIK; a miniature physiological monitoring device capable of collecting and analyzing a multitude of real-time signals to transmit medical data from remote locations to medical centers for diagnosis and intervention; a new thermal management system for fibers and fabrics giving rise to new line of garments and thermal-enhancing environments; and a highly electropositive material that attracts and retains electronegative particles in water.

  1. Johnson Space Center's Regenerative Life Support Systems Test Bed.

    Science.gov (United States)

    Barta, D J; Henninger, D L

    1996-01-01

    The Regenerative Life Support Systems (RLSS) Test Bed at NASA's Johnson Space Center is an atmospherically closed, controlled environment facility for human testing of regenerative life support systems using higher plants in conjunction with physicochemical life support systems. The facility supports NASA's Advanced Life Support (ALS) Program. The facility is comprised of two large scale plant growth chambers, each with approximately 11 m2 growing area. The root zone in each chamber is configurable for hydroponic or solid media plant culture systems. One of the two chambers, the Variable Pressure Growth Chamber (VPGC), is capable of operating at lower atmospheric pressures to evaluate a range of environments that may be used in a planetary surface habitat; the other chamber, the Ambient Pressure Growth Chamber (APGC) operates at ambient atmospheric pressure. The air lock of the VPGC is currently being outfitted for short duration (1 to 15 day) human habitation at ambient pressures. Testing with and without human subjects will focus on 1) integration of biological and physicochemical air and water revitalization systems; 2) effect of atmospheric pressure on system performance; 3) planetary resource utilization for ALS systems, in which solid substrates (simulated planetary soils or manufactured soils) are used in selected crop growth studies; 4) environmental microbiology and toxicology; 5) monitoring and control strategies; and 6) plant growth systems design. Included are descriptions of the overall design of the test facility, including discussions of the atmospheric conditioning, thermal control, lighting, and nutrient delivery systems.

  2. Unique strategies for technical information management at Johnson Space Center

    Science.gov (United States)

    Krishen, Vijay

    1994-01-01

    In addition to the current NASA manned programs, the maturation of Space Station and the introduction of the Space Exploration programs are anticipated to add substantially to the number and variety of data and documentation at NASA Johnson Space Center (JSC). This growth in the next decade has been estimated at five to ten fold compared to the current numbers. There will be an increased requirement for the tracking and currency of space program data and documents with National pressures to realize economic benefits from the research and technological developments of space programs. From a global perspective the demand for NASA's technical data and documentation is anticipated to increase at local, national, and international levels. The primary users will be government, industry, and academia. In our present national strategy, NASA's research and technology will assume a great role in the revitalization of the economy and gaining international competitiveness. Thus, greater demand will be placed on NASA's data and documentation resources. In this paper the strategies and procedures developed by DDMS, Inc., to accommodate the present and future information utilization needs are presented. The DDMS, Inc., strategies and procedures rely on understanding user requirements, library management issues, and technological applications for acquiring, searching, storing, and retrieving specific information accurately and quickly. The proposed approach responds to changing customer requirements and product deliveries. The unique features of the proposed strategy include: (1) To establish customer driven data and documentation management through an innovative and unique methods to identify needs and requirements. (2) To implement a structured process which responds to user needs, aimed at minimizing costs and maximizing services, resulting in increased productivity. (3) To provide a process of standardization of services and procedures. This standardization is the central

  3. Climate Change Adaptation Science Activities at NASA Johnson Space Center

    Science.gov (United States)

    Stefanov, William L.; Lulla, Kamlesh

    2012-01-01

    The Johnson Space Center (JSC), located in the southeast metropolitan region of Houston, TX is the prime NASA center for human spaceflight operations and astronaut training, but it also houses the unique collection of returned extraterrestrial samples, including lunar samples from the Apollo missions. The Center's location adjacent to Clear Lake and the Clear Creek watershed, an estuary of Galveston Bay, puts it at direct annual risk from hurricanes, but also from a number of other climate-related hazards including drought, floods, sea level rise, heat waves, and high wind events all assigned Threat Levels of 2 or 3 in the most recent NASA Center Disaster/Risk Matrix produced by the Climate Adaptation Science Investigator Working Group. Based on prior CASI workshops at other NASA centers, it is recognized that JSC is highly vulnerable to climate-change related hazards and has a need for adaptation strategies. We will present an overview of prior CASI-related work at JSC, including publication of a climate change and adaptation informational data brochure, and a Resilience and Adaptation to Climate Risks Workshop that was held at JSC in early March 2012. Major outcomes of that workshop that form a basis for work going forward are 1) a realization that JSC is embedded in a regional environmental and social context, and that potential climate change effects and adaptation strategies will not, and should not, be constrained by the Center fence line; 2) a desire to coordinate data collection and adaptation planning activities with interested stakeholders to form a regional climate change adaptation center that could facilitate interaction with CASI; 3) recognition that there is a wide array of basic data (remotely sensed, in situ, GIS/mapping, and historical) available through JSC and other stakeholders, but this data is not yet centrally accessible for planning purposes.

  4. Torelli groups, extended Johnson homomorphisms, and new cycles on the moduli space of curves

    DEFF Research Database (Denmark)

    Morita, Shigeyuki; Penner, Robert

    modulo N are derived for all N. Furthermore, the first Johnson homomorphism, which is defined from the classical Torelli group to the third exterior power of the homology of the surface, is shown to lift to an explicit canonical 1-cocycle of the Teichmueller space. The main tool for these results...... cocycle lifts of the higher Johnson homomorphisms....

  5. The Hayabusa Curation Facility at Johnson Space Center

    Science.gov (United States)

    Zolensky, M.; Bastien, R.; McCann, B.; Frank, D.; Gonzalez, C.; Rodriguez, M.

    2013-01-01

    The Japan Aerospace Exploration Agency (JAXA) Hayabusa spacecraft made contact with the asteroid 25143 Itokawa and collected regolith dust from Muses Sea region of smooth terrain [1]. The spacecraft returned to Earth with more than 10,000 grains ranging in size from just over 300 µm to less than 10 µm [2, 3]. These grains represent the only collection of material returned from an asteroid by a spacecraft. As part of the joint agreement between JAXA and NASA for the mission, 10% of the Hayabusa grains are being transferred to NASA for parallel curation and allocation. In order to properly receive process and curate these samples, a new curation facility was established at Johnson Space Center (JSC). Since the Hayabusa samples within the JAXA curation facility have been stored free from exposure to terrestrial atmosphere and contamination [4], one of the goals of the new NASA curation facility was to continue this treatment. An existing lab space at JSC was transformed into a 120 sq.ft. ISO class 4 (equivalent to the original class 10 standard) clean room. Hayabusa samples are stored, observed, processed, and packaged for allocation inside a stainless steel glove box under dry N2. Construction of the clean laboratory was completed in 2012. Currently, 25 Itokawa particles are lodged in NASA's Hayabusa Lab. Special care has been taken during lab construction to remove or contain materials that may contribute contaminant particles in the same size range as the Hayabusa grains. Several witness plates of various materials are installed around the clean lab and within the glove box to permit characterization of local contaminants at regular intervals by SEM and mass spectrometry, and particle counts of the lab environment are frequently acquired. Of particular interest is anodized aluminum, which contains copious sub-mm grains of a multitude of different materials embedded in its upper surface. Unfortunately the use of anodized aluminum was necessary in the construction

  6. Review of Lightning Protection Technology for Tall Structures Held at the Lyndon B. Johnson Space Flight Center, Houston, Texas, November 6, 1975

    Science.gov (United States)

    1977-01-31

    EDT on May 9, 1975, reportedly hit the MSS. A negative field collapse on nearby field mills indicates a positive stroke polarity . Positive strokes...CD o T ni v L_l X! , r CJ ^. bd LJ • 0) —1 O K 1 C3 LL E3 D 1 1 1 1 ’—T—’ 1- -|-llll(l5,») -3.DD(l«J -2.IlD(l0,) -l.Ds(ioei) . BDd ...plate always gave a greater current than the single point, usually at least 3 times greater. The inexplainable variations and changes in polarity of

  7. Two-Phase Technology at NASA/Johnson Space Center

    Science.gov (United States)

    Ungar, Eugene K.; Nicholson, Leonard S. (Technical Monitor)

    1999-01-01

    Since the baseline International Space Station (ISS) External Active Thermal Control System (EATCS) was changed from a two-phase mechanically pumped system to a single phase cascade system in the fall of 1993, two-phase EATCS research has continued at a low level at JSC. One of-the lessons of the ISS EATCS selection was that two-phase thermal control systems must have significantly lower power than comparable single phase systems to overcome their larger radiator area, larger line and fluid mass, and perceived higher technical risk. Therefore, research at JSC has concentrated on low power mechanically pumped two-phase EATCSs. In the presentation, the results of a study investigating the trade of single and two-phase mechanically pumped EATCSs for space vehicles will be summarized. The low power two-phase mechanically pumped EATCS system under development at JSC will be described in detail and the current design status of the subscale test unit will be reviewed. Also, performance predictions for a full size EATCS will be presented. In addition to the discussion of two-phase mechanically pumped EATCS development at JSC, two-phase technologies under development for biological water processing will be discussed. These biological water processor technologies are being prepared for a 2001 flight experiment and subsequent usage on the TransHab module on the International Space Station.

  8. The Johnson Space Center management information systems: User's guide to JSCMIS

    Science.gov (United States)

    Bishop, Peter C.; Erickson, Lloyd

    1990-01-01

    The Johnson Space Center Management Information System (JSCMIS) is an interface to computer data bases at the NASA Johnson Space Center which allows an authorized user to browse and retrieve information from a variety of sources with minimum effort. The User's Guide to JSCMIS is the supplement to the JSCMIS Research Report which details the objectives, the architecture, and implementation of the interface. It is a tutorial on how to use the interface and a reference for details about it. The guide is structured like an extended JSCMIS session, describing all of the interface features and how to use them. It also contains an appendix with each of the standard FORMATs currently included in the interface. Users may review them to decide which FORMAT most suits their needs.

  9. The 1990 Johnson Space Center bibliography of scientific and technical papers

    Science.gov (United States)

    1991-01-01

    Abstracts are presented of scientific and technical papers written and/or presented by L. B. Johnson Space Center (JSC) authors, including civil servants, contractors, and grantees, during the calendar year of 1990. Citations include conference and symposium presentations, papers published in proceedings or other collective works, seminars, and workshop results, NASA formal report series (including contractually required final reports), and articles published in professional journals.

  10. Pharmacy in a New Frontier - The First Five Years at the Johnson Space Center Pharmacy

    Science.gov (United States)

    Bayuse, Tina

    2008-01-01

    A poster entitled "Space Medicine - A New Role for Clinical Pharmacists" was presented in December 2001 highlighting an up-and-coming role for pharmacists at the Johnson Space Center (JSC) in Houston, Texas. Since that time, the operational need for the pharmacy profession has expanded with the administration s decision to open a pharmacy on site at JSC to complement the care provided by the Flight Medicine and Occupational Medicine Clinics. The JSC Pharmacy is a hybrid of traditional retail and hospital pharmacy and is compliant with the ambulatory care standards set forth by the Joint Commission. The primary charge for the pharmacy is to provide medication management for JSC. In addition to providing ambulatory care for both clinics, the pharmacists also practice space medicine. A pharmacist had been involved in the packing of both the Space Shuttle and International Space Station Medical Kits before the JSC Pharmacy was established; however, the role of the pharmacist in packing medical kits has grown. The pharmacists are now full members of the operations team providing consultation for new drug delivery systems, regulations, and patient safety issues. As the space crews become more international, so does the drug information provided by the pharmacists. This presentation will review the journey of the JSC Pharmacy as it celebrated its five year anniversary in April of 2008. The implementation of the pharmacy, challenges to the incorporation of the pharmacy into an existing health-care system, and the current responsibilities of a pharmacist at the Johnson Space Center will be discussed.

  11. NASA Pathways Co-op Tour Johnson Space Center Fall 2013

    Science.gov (United States)

    Masood, Amir; Osborne-Lee, Irwin W.

    2013-01-01

    This report outlines the tasks and objectives completed during a co-operative education tour with National Aeronautics and Space Association (NASA) at the Johnson Space Center in Houston, Texas. I worked for the Attitude & Pointing group of the Flight Dynamics Division within the Mission Operations Directorate at Johnson Space Center. NASA's primary mission is to support and expand the various ongoing space exploration programs and any research and development activities associated with it. My primary project required me to develop and a SharePoint web application for my group. My secondary objective was to become familiar with the role of my group which was primarily to provide spacecraft attitude and line of sight determination, including Tracking and Data Relay Satellite (TDRS) communications coverage for various NASA, International, and commercial partner spacecraft. My projects required me to become acquainted with different software systems, fundamentals of aerospace engineering, project management, and develop essential interpersonal communication skills. Overall, I accomplished multiple goals which included laying the foundations for an updated SharePoint which will allow for an organized platform to communicate and share data for group members and external partners. I also successfully learned about the operations of the Attitude & Pointing Group and how it contributes to the Missions Operations Directorate and NASA's Space Program as a whole

  12. Torelli groups, extended Johnson homomorphisms, and new cycles on the moduli space of curves

    DEFF Research Database (Denmark)

    Morita, Shigeyuki; Penner, Robert

    is the known mapping class group invariant ideal cell decomposition of the Teichmueller space. This new 1-cocycle is mapping class group equivariant, so various contractions of its powers yield various combinatorial (co)cycles of the moduli space of curves, which are also new. Our combinatorial construction...... can be related to former works of Kawazumi and the first-named author with the consequence that the algebra generated by the cohomology classes represented by the new cocycles is precisely the tautological algebra of the moduli space. There is finally a discussion of prospects for similarly finding...... modulo N are derived for all N. Furthermore, the first Johnson homomorphism, which is defined from the classical Torelli group to the third exterior power of the homology of the surface, is shown to lift to an explicit canonical 1-cocycle of the Teichmueller space. The main tool for these results...

  13. Capability of the Gas Analysis and Testing Laboratory at the NASA Johnson Space Center

    Science.gov (United States)

    Broerman, Craig; Jimenez, Javier; Sweterlitsch, Jeff

    2012-01-01

    The Gas Analysis and Testing Laboratory is an integral part of the testing performed at the NASA Johnson Space Center. The Gas Analysis and Testing Laboratory is a high performance laboratory providing real time analytical instruments to support manned and unmanned testing. The lab utilizes precision gas chromatographs, gas analyzers and spectrophotometers to support the technology development programs within the NASA community. The Gas Analysis and Testing Laboratory works with a wide variety of customers and provides engineering support for user-specified applications in compressed gas, chemical analysis, general and research laboratory.

  14. NASA Johnson Space Center Usability Testing and Analysis facility (UTAF) Overview

    Science.gov (United States)

    Whitmore, Mihriban; Holden, Kritina L.

    2005-01-01

    The Usability Testing and Analysis Facility (UTAF) is part of the Space Human Factors Laboratory at the NASA Johnson Space Center in Houston, Texas. The facility performs research for NASA's HumanSystems Integration Program, under the HumanSystems Research and Technology Division. Specifically, the UTAF provides human factors support for space vehicles, including the International Space Station, the Space Shuttle, and the forthcoming Crew Exploration Vehicle. In addition, there are ongoing collaborative research efforts with external corporations and universities. The UTAF provides human factors analysis, evaluation, and usability testing of crew interfaces for space applications. This includes computer displays and controls, workstation systems, and work environments. The UTAF has a unique mix of capabilities, with a staff experienced in both cognitive human factors and ergonomics. The current areas of focus are: human factors applications in emergency medical care and informatics; control and display technologies for electronic procedures and instructions; voice recognition in noisy environments; crew restraint design for unique microgravity workstations; and refinement of human factors processes and requirements. This presentation will provide an overview of ongoing activities, and will address how the UTAF projects will evolve to meet new space initiatives.

  15. Lead Paint Exposure Assessment in High Bays of Johnson Space Center

    Science.gov (United States)

    Stanch, Penney; Plaza, Angel; Keprta, Sean

    2008-01-01

    This slide presentation reviews the program to assess the possibility of lead paint exposure in the high bays of some of the Johnson Space Center buildings. Some of the buildings in the Manned Space Flight Center (MSC) were built in 1962 and predate any considerations to reduce lead in paints and coatings. There are many of these older buildings that contain open shops and work areas that have open ceilings, These shops include those that had operations that use leaded gasoline, batteries, and lead based paints. Test were planned to be conducted in three phases: (1) Surface Dust sampling, (2) personal exposure montioring, and (3) Ceiling paint Sampling. The results of the first two phases were reviewed. After considering the results of the first two phases, and the problems associated with the retrieval of samples from high ceilings, it was determined that the evaluation of ceiling coatings would be done on a project by project and in response to a complaint.

  16. NASA Johnson Space Center Usability Testing and Analysis Facility (WAF) Overview

    Science.gov (United States)

    Whitmore, M.

    2004-01-01

    The Usability Testing and Analysis Facility (UTAF) is part of the Space Human Factors Laboratory at the NASA Johnson Space Center in Houston, Texas. The facility provides support to the Office of Biological and Physical Research, the Space Shuttle Program, the International Space Station Program, and other NASA organizations. In addition, there are ongoing collaborative research efforts with external businesses and universities. The UTAF provides human factors analysis, evaluation, and usability testing of crew interfaces for space applications. This includes computer displays and controls, workstation systems, and work environments. The UTAF has a unique mix of capabilities, with a staff experienced in both cognitive human factors and ergonomics. The current areas of focus are: human factors applications in emergency medical care and informatics; control and display technologies for electronic procedures and instructions; voice recognition in noisy environments; crew restraint design for unique microgravity workstations; and refinement of human factors processes. This presentation will provide an overview of ongoing activities, and will address how the projects will evolve to meet new space initiatives.

  17. Introduction to the Navigation Team: Johnson Space Center EG6 Internship

    Science.gov (United States)

    Gualdoni, Matthew

    2017-01-01

    The EG6 navigation team at NASA Johnson Space Center, like any team of engineers, interacts with the engineering process from beginning to end; from exploring solutions to a problem, to prototyping and studying the implementations, all the way to polishing and verifying a final flight-ready design. This summer, I was privileged enough to gain exposure to each of these processes, while also getting to truly experience working within a team of engineers. My summer can be broken up into three projects: i) Initial study and prototyping: investigating a manual navigation method that can be utilized onboard Orion in the event of catastrophic failure of navigation systems; ii) Finalizing and verifying code: altering a software routine to improve its robustness and reliability, as well as designing unit tests to verify its performance; and iii) Development of testing equipment: assisting in developing and integrating of a high-fidelity testbed to verify the performance of software and hardware.

  18. Martian Analogue Sample Characterization and Spectral Library Development at the Johnson Space Center

    Science.gov (United States)

    Morris, Richard V.

    2002-01-01

    An extensive collection of Martian analogue samples housed at the Johnson Space Center is the focus of ongoing research by the JSC Mars soil genesis group and their collaborators. Because the major element composition of Martian meteorites and in situ analyses of Martian soils and rocks indicate that Mars is predominantly an iron-rich basaltic world, the focus of active sample collection and analysis is basaltic materials and their hydrolytic (both aqueous and hydrothermal) and sulfatetic alteration products. Described below are the scope of the JSC Mars analogue sample collection, the characterization process, and plans to incorporate the data into spectral libraries for the Mars 2003 Mars Exploration Rover (MER) and Mars 2005 Mars Reconnaissance Orbiter (MRO) CRISM missions.

  19. Perspectives from the Wearable Electronics and Applications Research (WEAR) Lab, NASA Johnson Space Center

    Science.gov (United States)

    Moses, Haifa R.

    2017-01-01

    As NASA moves beyond exploring low earth orbit and into deep space exploration, increased communication delays between astronauts and earth drive a need for crew to become more autonomous (earth-independent). Currently crew on board the International Space Station (ISS) have limited insight into specific vehicle system performance because of the dependency on monitoring and real-time communication with Mission Control. Wearable technology provides a method to bridge the gap between the human (astronaut) and the system (spacecraft) by providing mutual monitoring between the two. For example, vehicle or environmental information can be delivered to astronauts through on-body devices and in return wearables provide data to the spacecraft regarding crew health, location, etc. The Wearable Electronics and Applications Research (WEAR) Lab at the NASA Johnson Space Center utilizes a collaborative approach between engineering and human factors to investigate the use of wearables for spaceflight. Zero and partial gravity environments present unique challenges to wearables that require collaborative, user-centered, and iterative approaches to the problems. Examples of the WEAR Lab's recent wearable projects for spaceflight will be discussed.

  20. Johnson Space Center's Solar and Wind-Based Renewable Energy System

    Science.gov (United States)

    Vasquez, A.; Ewert, M.; Rowlands, J.; Post, K.

    2009-01-01

    The NASA Johnson Space Center (JSC) in Houston, Texas has a Sustainability Partnership team that seeks ways for earth-based sustainability practices to also benefit space exploration research. A renewable energy gathering system was installed in 2007 at the JSC Child Care Center (CCC) which also offers a potential test bed for space exploration power generation and remote monitoring and control concepts. The system comprises: 1) several different types of photovoltaic panels (29 kW), 2) two wind-turbines (3.6 kW total), and 3) one roof-mounted solar thermal water heater and tank. A tie to the JSC local electrical grid was provided to accommodate excess power. The total first year electrical energy production was 53 megawatt-hours. A web-based real-time metering system collects and reports system performance and weather data. Improvements in areas of the CCC that were detected during subsequent energy analyses and some concepts for future efforts are also presented.

  1. Creating the Thermal Environment for Safely Testing the James Webb Space Telescope at the Johnson Space Center's Chamber A

    Science.gov (United States)

    Homan, Jonathan L.; Lauterbach, John; Garcia, Sam

    2016-01-01

    Chamber A is the largest thermal vacuum chamber at the Johnson Space Center and is one of the largest space environment chambers in the world. The chamber is 19.8 m (65 ft) in diameter and 36.6 m (120 ft) tall and is equipped with cryogenic liquid nitrogen panels (shrouds) and gaseous helium shrouds to create a simulated space environment. The chamber was originally built to support testing of the Apollo Service and Command Module for lunar missions, but underwent major modifications to be able to test the James Webb Space Telescope in a simulated deep space environment. To date seven tests have been performed in preparation of testing the flight optics for the James Webb Space Telescope (JWST). Each test has had a uniquie thermal profile and set of thermal requirements for cooling down and warming up, controlling contamination, and releasing condensed air. These range from temperatures from 335K to 15K, with tight uniformity and controllability for maintining thermal stability and pressure control. One unique requirement for two test was structurally proof loading hardware by creating thermal gradients at specific temperatures. This paper will discuss the thermal requirements and goals of the tests, the original requirements of the chamber thermal systems for planned operation, and how the new requirements were met by the team using the hardware, system flexiblilty, and engineering creativity. It will also discuss the mistakes and successes to meet the unique goals, especially when meeting the thermal proof load.

  2. Applications of Low Density Flow Techniques and Catalytic Recombination at the Johnson Space Center

    Science.gov (United States)

    Scott, Carl D.

    2000-01-01

    The talk presents a brief background on defInitions of catalysis and effects associated with chemically nonequilibrium and low-density flows of aerospace interest. Applications of catalytic recombination on surfaces in dissociated flow are given, including aero heating on reentry spacecraft thermal protection surfaces and reflection of plume flow on pressure distributions associated with the space station. Examples include aero heating predictions for the X-38 test vehicle, the inlet of a proposed gas-sampling probe used in high enthalpy test facilities, and a parabolic body at angle of attack. The effect of accommodation coefficients on thruster induced pressure distributions is also included. Examples of tools used include simple aero heating formulas based on boundary layer solutions, an engineering approximation that uses axisymmetric viscous shock layer flow to simulate full three dimensional flow, full computational fluid dynamics, and direct simulation Monte-Carlo calculations. Methods of determining catalytic recombination rates in arc jet flow are discus ed. An area of catalysis not fully understood is the formation of single-wall carbon nanotubes (SWNT) with gas phase or nano-size metal particles. The Johnson Space Center is making SWNTs using both a laser ablation technique and an electric arc vaporization technique.

  3. The development and technology transfer of software engineering technology at NASA. Johnson Space Center

    Science.gov (United States)

    Pitman, C. L.; Erb, D. M.; Izygon, M. E.; Fridge, E. M., III; Roush, G. B.; Braley, D. M.; Savely, R. T.

    1992-01-01

    The United State's big space projects of the next decades, such as Space Station and the Human Exploration Initiative, will need the development of many millions of lines of mission critical software. NASA-Johnson (JSC) is identifying and developing some of the Computer Aided Software Engineering (CASE) technology that NASA will need to build these future software systems. The goal is to improve the quality and the productivity of large software development projects. New trends are outlined in CASE technology and how the Software Technology Branch (STB) at JSC is endeavoring to provide some of these CASE solutions for NASA is described. Key software technology components include knowledge-based systems, software reusability, user interface technology, reengineering environments, management systems for the software development process, software cost models, repository technology, and open, integrated CASE environment frameworks. The paper presents the status and long-term expectations for CASE products. The STB's Reengineering Application Project (REAP), Advanced Software Development Workstation (ASDW) project, and software development cost model (COSTMODL) project are then discussed. Some of the general difficulties of technology transfer are introduced, and a process developed by STB for CASE technology insertion is described.

  4. Actions Needed to Ensure Scientific and Technical Information is Adequately Reviewed at Goddard Space Flight Center, Johnson Space Center, Langley Research Center, and Marshall Space Flight Center

    Science.gov (United States)

    2008-01-01

    This audit was initiated in response to a hotline complaint regarding the review, approval, and release of scientific and technical information (STI) at Johnson Space Center. The complainant alleged that Johnson personnel conducting export control reviews of STI were not fully qualified to conduct those reviews and that the reviews often did not occur until after the STI had been publicly released. NASA guidance requires that STI, defined as the results of basic and applied scientific, technical, and related engineering research and development, undergo certain reviews prior to being released outside of NASA or to audiences that include foreign nationals. The process includes technical, national security, export control, copyright, and trade secret (e.g., proprietary data) reviews. The review process was designed to preclude the inappropriate dissemination of sensitive information while ensuring that NASA complies with a requirement of the National Aeronautics and Space Act of 1958 (the Space Act)1 to provide for the widest practicable and appropriate dissemination of information resulting from NASA research activities. We focused our audit on evaluating the STI review process: specifically, determining whether the roles and responsibilities for the review, approval, and release of STI were adequately defined and documented in NASA and Center-level guidance and whether that guidance was effectively implemented at Goddard Space Flight Center, Johnson Space Center, Langley Research Center, and Marshall Space Flight Center. Johnson was included in the review because it was the source of the initial complaint, and Goddard, Langley, and Marshall were included because those Centers consistently produce significant amounts of STI.

  5. Actions Needed to Ensure Scientific and Technical Information is Adequately Reviewed at Goddard Space Flight Center, Johnson Space Center, Langley Research Center, and Marshall Space Flight Center

    Science.gov (United States)

    2008-01-01

    This audit was initiated in response to a hotline complaint regarding the review, approval, and release of scientific and technical information (STI) at Johnson Space Center. The complainant alleged that Johnson personnel conducting export control reviews of STI were not fully qualified to conduct those reviews and that the reviews often did not occur until after the STI had been publicly released. NASA guidance requires that STI, defined as the results of basic and applied scientific, technical, and related engineering research and development, undergo certain reviews prior to being released outside of NASA or to audiences that include foreign nationals. The process includes technical, national security, export control, copyright, and trade secret (e.g., proprietary data) reviews. The review process was designed to preclude the inappropriate dissemination of sensitive information while ensuring that NASA complies with a requirement of the National Aeronautics and Space Act of 1958 (the Space Act)1 to provide for the widest practicable and appropriate dissemination of information resulting from NASA research activities. We focused our audit on evaluating the STI review process: specifically, determining whether the roles and responsibilities for the review, approval, and release of STI were adequately defined and documented in NASA and Center-level guidance and whether that guidance was effectively implemented at Goddard Space Flight Center, Johnson Space Center, Langley Research Center, and Marshall Space Flight Center. Johnson was included in the review because it was the source of the initial complaint, and Goddard, Langley, and Marshall were included because those Centers consistently produce significant amounts of STI.

  6. The Johnson Space Center Management Information Systems (JSCMIS): An interface for organizational databases

    Science.gov (United States)

    Bishop, Peter C.; Erickson, Lloyd

    1990-01-01

    The Management Information and Decision Support Environment (MIDSE) is a research activity to build and test a prototype of a generic human interface on the Johnson Space Center (JSC) Information Network (CIN). The existing interfaces were developed specifically to support operations rather than the type of data which management could use. The diversity of the many interfaces and their relative difficulty discouraged occasional users from attempting to use them for their purposes. The MIDSE activity approached this problem by designing and building an interface to one JSC data base - the personnel statistics tables of the NASA Personnel and Payroll System (NPPS). The interface was designed against the following requirements: generic (use with any relational NOMAD data base); easy to learn (intuitive operations for new users); easy to use (efficient operations for experienced users); self-documenting (help facility which informs users about the data base structure as well as the operation of the interface); and low maintenance (easy configuration to new applications). A prototype interface entitled the JSC Management Information Systems (JSCMIS) was produced. It resides on CIN/PROFS and is available to JSC management who request it. The interface has passed management review and is ready for early use. Three kinds of data are now available: personnel statistics, personnel register, and plan/actual cost.

  7. Organic Contamination Baseline Study in NASA Johnson Space Center Astromaterials Curation Laboratories

    Science.gov (United States)

    Calaway, Michael J.; Allen, Carlton C.; Allton, Judith H.

    2014-01-01

    Future robotic and human spaceflight missions to the Moon, Mars, asteroids, and comets will require curating astromaterial samples with minimal inorganic and organic contamination to preserve the scientific integrity of each sample. 21st century sample return missions will focus on strict protocols for reducing organic contamination that have not been seen since the Apollo manned lunar landing program. To properly curate these materials, the Astromaterials Acquisition and Curation Office under the Astromaterial Research and Exploration Science Directorate at NASA Johnson Space Center houses and protects all extraterrestrial materials brought back to Earth that are controlled by the United States government. During fiscal year 2012, we conducted a year-long project to compile historical documentation and laboratory tests involving organic investigations at these facilities. In addition, we developed a plan to determine the current state of organic cleanliness in curation laboratories housing astromaterials. This was accomplished by focusing on current procedures and protocols for cleaning, sample handling, and storage. While the intention of this report is to give a comprehensive overview of the current state of organic cleanliness in JSC curation laboratories, it also provides a baseline for determining whether our cleaning procedures and sample handling protocols need to be adapted and/or augmented to meet the new requirements for future human spaceflight and robotic sample return missions.

  8. Johnson Space Center's Risk and Reliability Analysis Group 2008 Annual Report

    Science.gov (United States)

    Valentine, Mark; Boyer, Roger; Cross, Bob; Hamlin, Teri; Roelant, Henk; Stewart, Mike; Bigler, Mark; Winter, Scott; Reistle, Bruce; Heydorn,Dick

    2009-01-01

    The Johnson Space Center (JSC) Safety & Mission Assurance (S&MA) Directorate s Risk and Reliability Analysis Group provides both mathematical and engineering analysis expertise in the areas of Probabilistic Risk Assessment (PRA), Reliability and Maintainability (R&M) analysis, and data collection and analysis. The fundamental goal of this group is to provide National Aeronautics and Space Administration (NASA) decisionmakers with the necessary information to make informed decisions when evaluating personnel, flight hardware, and public safety concerns associated with current operating systems as well as with any future systems. The Analysis Group includes a staff of statistical and reliability experts with valuable backgrounds in the statistical, reliability, and engineering fields. This group includes JSC S&MA Analysis Branch personnel as well as S&MA support services contractors, such as Science Applications International Corporation (SAIC) and SoHaR. The Analysis Group s experience base includes nuclear power (both commercial and navy), manufacturing, Department of Defense, chemical, and shipping industries, as well as significant aerospace experience specifically in the Shuttle, International Space Station (ISS), and Constellation Programs. The Analysis Group partners with project and program offices, other NASA centers, NASA contractors, and universities to provide additional resources or information to the group when performing various analysis tasks. The JSC S&MA Analysis Group is recognized as a leader in risk and reliability analysis within the NASA community. Therefore, the Analysis Group is in high demand to help the Space Shuttle Program (SSP) continue to fly safely, assist in designing the next generation spacecraft for the Constellation Program (CxP), and promote advanced analytical techniques. The Analysis Section s tasks include teaching classes and instituting personnel qualification processes to enhance the professional abilities of our analysts

  9. Automated classification of interplanetary dust particles: Johnson Space Center Cosmic Dust Catalog Volume 15

    Science.gov (United States)

    Lasue, Jeremie; Stepinski, Tomasz; Bell, Samuel W.

    2010-05-01

    The ``Cosmic Dust Catalog,'' published by the NASA Johnson Space Center (JSC), describes thousands of interplanetary dust particles subjected to preliminary analysis and with labels indicating their origin. However, only about 80% of the particles are assigned unambiguous labels, the labels of the remaining 20% being uncertain. In addition, the Stardust mission results opened up the possibility that some particles classified as terrestrial contaminants are instead of cosmic (cometary) origin. In this article, we present a methodology for automatic classification of particles on the basis of similarity of their X-ray energy dispersive spectrometry spectra. The method is applied to the 467 particles constituting Volume 15 of the catalog. A first part of the analysis is to digitize the spectra from their scanned images. The digitized spectra are subjected to agglomerative clustering, which reveals 16 distinct clusters or compositional types of particles. The Sammon's map is used to visualize the relationship between different clusters; 6 clusters corresponding to cosmic particles and 10 clusters corresponding to terrestrial contaminants are clearly separated on the map indicating overall differences between diverse spectra of cosmic and terrestrial particles. By reconciling labels with the clustering structures, we propose the relabeling of 155 particles including the relabeling of 31 terrestrial contaminants into cosmic particles. The proposed relabeling needs to be confirmed by in-depth study of these particles. The paucity of particles with firmly determined cometary or asteroidal origin makes it difficult to establish whether the spectra based autoclassification can be utilized to discriminate between cometary and asteroidal particles. The methodology presented here can be used to classify all particles published in the catalog, as well as different samples for which comparable spectra are available.

  10. Handling Heavenly Jewels - 35 Years of Antarctic Meteorite Processing at Johnson Space Center

    Science.gov (United States)

    Satterwhite, C. E.; McBridge, K. M.; Harrington, R.; Schwarz, C. M.

    2011-01-01

    The ANSMET program began in 1976, and since that time more than 18,000 meteorites have been processed in the Meteorite Processing Lab at Johnson Space Center in Houston, TX[1]. The meteorites are collected and returned to JSC on a freezer truck and remain frozen until they are initially processed. Initial Processing of Meteorites: Initial processing involves drying the meteorites in a nitrogen glove box for 24 to 48 hours, photographing, measuring, weighing and writing a description of the interior and exterior. The meteorite is broken and a representative sample is sent to the Smithsonian Institution for classification. Newsletter & Requests: Once initial processing has been complete and the meteorites have been classified, the information is published in the Antarctic Meteorite Newsletter[2,3]. The newsletter is published twice yearly and is sent electronically to researchers around the world and is also available on line. Researchers are asked to fill out a request form and submit it to the Meteorite Working Group secretary. All sample requests will be reviewed by either the meteorite curator or the Meteorite Working Group de-pending on the type of meteorite and the research being conducted. Processing for Sample Requests: In the meteorite processing lab, meteorite samples are prepared several different ways. Most samples are prepared as chips obtained by use of stainless steel chisels in a chipping bowl or rock splitter. In special situations where a researcher needs a slab the meteorite samples can be bandsawed in a dry nitrogen glove box with a diamond blade, no liquids are ever introduced into the cabinet. The last type of sample preparation is thin/thick sections. The meteorite thin section lab at JSC can prepare standard 30-micron thin sections, thick sections of variable thickness (100 to 200 microns), or demountable sections using superglue. Information for researchers: It is important that re-searchers fill the sample request form completely, in order

  11. The Astromaterials X-Ray Computed Tomography Laboratory at Johnson Space Center

    Science.gov (United States)

    Zeigler, R. A.; Coleff, D. M.; McCubbin, F. M.

    2017-01-01

    The Astromaterials Acquisition and Curation Office at NASA's Johnson Space Center (hereafter JSC curation) is the past, present, and future home of all of NASA's astromaterials sample collections. JSC curation currently houses all or part of nine different sample collections: (1) Apollo samples (1969), (2) Lunar samples (1972), (3) Antarctic meteorites (1976), (4) Cosmic Dust particles (1981), (5) Microparticle Impact Collection (1985), (6) Genesis solar wind atoms (2004); (7) Stardust comet Wild-2 particles (2006), (8) Stardust interstellar particles (2006), and (9) Hayabusa asteroid Itokawa particles (2010). Each sample collection is housed in a dedicated clean room, or suite of clean rooms, that is tailored to the requirements of that sample collection. Our primary goals are to maintain the long-term integrity of the samples and ensure that the samples are distributed for scientific study in a fair, timely, and responsible manner, thus maximizing the return on each sample. Part of the curation process is planning for the future, and we also perform fundamental research in advanced curation initiatives. Advanced Curation is tasked with developing procedures, technology, and data sets necessary for curating new types of sample collections, or getting new results from existing sample collections [2]. We are (and have been) planning for future curation, including cold curation, extended curation of ices and volatiles, curation of samples with special chemical considerations such as perchlorate-rich samples, and curation of organically- and biologically-sensitive samples. As part of these advanced curation efforts we are augmenting our analytical facilities as well. A micro X-Ray computed tomography (micro-XCT) laboratory dedicated to the study of astromaterials will be coming online this spring within the JSC Curation office, and we plan to add additional facilities that will enable nondestructive (or minimally-destructive) analyses of astromaterials in the near

  12. Johnson Space Center's Free Range Bicycle Program.- Fall 2015 Intern Report

    Science.gov (United States)

    Lee-Stockton, Willem

    2015-01-01

    NASA's Johnson Space Center is a big place, encompassing 1,620 acres and more than a hundred buildings. Furthermore, there are reportedly 15 thousand employees, all of which have somewhere to be. To facilitate the movement of all these people JSC has historically relied on human power. Pedaling their way towards deep space, bicycles have been the go to method. Currently there are about 200 Free Range Bicycles at JSC. Free Range Bicycles belong to nobody, except NASA, and are available for anybody to use. They are not to be locked or hidden (although frequently are) and the intention is that there will always be a bike to hop on to get where you're going (although it may not be the bike you rode in on). Although not without its own shortcomings, the Free Range Bicycle Program has continued to provide low cost, simple transportation for NASA's JSC. In addition to the approximately 200 Free Range Bicycles, various larger divisions (like engineering) will often buy a few dozen bikes for their team members to use or individuals will bring their own personal bike to either commute or use on site. When these bicycles fall into disrepair or are abandoned (from retirees etc) they become a problem at JSC. They are an eye sore, create a safety hazard and make it harder to find a working bike in a time of need. The Free Range Program hopes to address this first problem by "tagging out" abandoned or out of service bicycles. A bright orange "DO NOT OPERATE" tag is placed on the bike and given a serial number for tracking purposes. See picture to the right. If the bike has an active owner with intentions to repair the bike the bottom of the tag has instructions for how to claim the abandoned bicycle. After being tagged the owner of the bicycle has 30 days to claim the bicycle and either haul it off site or get it repaired (and labeled) in accordance with Johnson's Bicycle Policy. If the abandoned bicycle is not claimed within 30 days it becomes the property of the Government. The

  13. NASA Johnson Space Center Small Business Innovation Research (SBIR) Successes, Infusion and Commercializations and Potential International Partnering Opportunities

    Science.gov (United States)

    Packard, Kathryn; Goodman, Doug; Whittington, James

    2016-01-01

    The NASA Small Business Innovation Research (SBIR) Program has served as a beneficial funding vehicle to both US small technology businesses and the Federal Agencies that participate in the program. This paper, to the extent possible, while observing Intellectual Property (IP) laws, will discuss the many SBIR and STTR (SBIR Technology Transfer) successes in the recent history of the NASA Johnson Space Center (JSC). Many of the participants of the International Conference on Environmental Systems (ICES) have based their research and papers on technologies that were made possible by SBIR/STTR awards and post award funding. Many SBIR/STTR successes have flown on Space Shuttle missions, Space X Dragons, and other spacecraft. SBIR/STTR technologies are currently infused on the International Space Station (ISS) and satellites, one of which was a NASA/JAXA (Japanese Space Agency) joint venture. Many of these companies have commercialized their technologies and grown as businesses while helping the economy through the creation of new jobs. In addition, this paper will explore the opportunity for international partnership with US SBIR/STTR companies as up to 49% of the makeup of the company is not required to be American owned. Although this paper will deal with technical achievements, it does not purport to be technical in nature. It will address the many requests for information on successes and opportunities within NASA SBIR and the virtually untapped potential of international partnering.

  14. Phase transformation kinetics of Voronoi cells in space tessellation governed by the Kolmogorov-Johnson-Mehl-Avrami model

    Science.gov (United States)

    Tomellini, Massimo

    2017-03-01

    On the basis of the Kolmogorov-Johnson-Mehl-Avrami (KJMA) method for space tessellation the kinetics of Voronoi cell filling, by central grain growth, has been studied as a function of the cell size. This is done by solving an integral equation for which a class of solutions is obtained in closed form, where the cell-size probability density is the Gamma distribution function. The computation gives the time evolution of the mean grain size, as a function of cell volume, which is further employed for describing the grain-size probability density function. The present approach is applied to determine, analytically, the exact grain-size distribution function in 1D and the size distributions in 2D and 3D through approximation.

  15. Thermoelectric applications as related to biomedical engineering for NASA Johnson Space Center

    Energy Technology Data Exchange (ETDEWEB)

    Kramer, C.D.

    1997-07-01

    This paper presents current NASA biomedical developments and applications using thermoelectrics. Discussion will include future technology enhancements that would be most beneficial to the application of thermoelectric technology. A great deal of thermoelectric applications have focused on electronic cooling. As with all technological developments within NASA, if the application cannot be related to the average consumer, the technology will not be mass-produced and widely available to the public (a key to research and development expenditures and thermoelectric companies). Included are discussions of thermoelectric applications to cool astronauts during launch and reentry. The earth-based applications, or spin-offs, include such innovations as tank and race car driver cooling, to cooling infants with high temperatures, as well as, the prevention of hair loss during chemotherapy. In order to preserve the scientific value of metabolic samples during long-term space missions, cooling is required to enable scientific studies. Results of one such study should provide a better understanding of osteoporosis and may lead to a possible cure for the disease. In the space environment, noise has to be kept to a minimum. In long-term space applications such as the International Space Station, thermoelectric technology provides the acoustic relief and the reliability for food, as well as, scientific refrigeration/freezers. Applications and future needs are discussed as NASA moves closer to a continued space presence in Mir, International Space Station, and Lunar-Mars Exploration.

  16. The Evaluation and Improvement of Microbial Analysis Methods and Techniques in the Johnson Space Center Microbiology Laboratory

    Science.gov (United States)

    St. Pierre, Ashley L.; Smith, Melanie J.; Dunbar, Brandon J.; Ott, C. Mark

    2016-01-01

    Microbial contamination is a risk to crew health both on the ground and on the International Space Station. The methods and techniques of microbial analysis for surfaces and items on board a spacecraft are an important aspect of ensuring that crew health is not at unnecessary risk. This series of projects seeks to improve and optimize microbial analysis methods, such as the recovery of bacteria from difficult surfaces, and the analysis of long-term bacterial isolate storage techniques. These projects will help the Johnson Space Center Microbiology laboratory be more efficient at identifying and addressing microbial concerns related to spaceflight and on the ground. Fabrics are substantially more problematic for microbial monitoring than steel or glass surfaces, as bacteria tend to get trapped in the fibers. To better understand which microbial sampling method is most efficient, various methods of recovery were attempted, and the processes were revised based on the results. The final phase of testing applied the knowledge gained from the resulting methods to an acoustic blanket that is currently being used on the International Space Station, with future use slated for the Orion spacecraft. In this phase, the sample materials were inoculated with bacterial suspensions, vortexed with phosphate-saline buffer, and the liquid was plated on tryptic soy agar. The results from the test of the acoustic blanket indicate that not only is microbial growth possible on fabric that is treated for moisture-resistance, but also that contamination can occur if aseptic handling procedures are not followed. Interestingly, out of three hundred and ninety (390) plates, only seventeen (17) showed growth (4.36%), and recovery of the Staphylococcus epidermidis used to inoculate the samples only occurred on four (4) of the plates. The growth on the remaining plates was contamination by various microbes, including those commonly found on the skin and in soil. This shows that 2 while bacterial

  17. CPRIT/Johnson Space Center, September, 2011 (Cancer Prevention and Research Institute of Texas)

    Science.gov (United States)

    Davis, Jeffrey; Lane, Helen; Baker, Tracey; Cucinotta, Francis; Wu, Honglu

    2011-01-01

    JSC researchers study carcinogenesis, cancer prevention and treatment along with epidemiological (primarily retrospective and longitudinal) studies, modeling, and interactions with the environment such as radiation, nutritional, and endocrine changes related to space flight along with behaviors such as smoking. Cancer research is a major focus for human space flight due to the exposure to space radiation which consists of particles of varying charges and energies, and secondary neutrons. The JSC laboratories collaborate with investigators from the U.S. as well as our European and Japanese partners. We use accelerator facilities at the Brookhaven National Laboratory, Loma Linda University and Los Alamos National Laboratory that generate high energy charged particles and neutrons to simulate cosmic radiation and solar particle events. The research using cultured cells and animals concentrates on damage and repair from the level of DNA to organ tissues, due to exposure to simulated space radiation exposure, that contribute to the induction of leukemia and solid tumors in most major tissues such as lung, colon, liver and breast. The goal of the research is to develop a mathematical model that can predict cancer morbidity and mortality risks with sufficient accuracy for a given space mission.

  18. Aerospace applications of SINDA/FLUINT at the Johnson Space Center

    Science.gov (United States)

    Ewert, Michael K.; Bellmore, Phillip E.; Andish, Kambiz K.; Keller, John R.

    1992-01-01

    SINDA/FLUINT has been found to be a versatile code for modeling aerospace systems involving single or two-phase fluid flow and all modes of heat transfer. Several applications of SINDA/FLUINT are described in this paper. SINDA/FLUINT is being used extensively to model the single phase water loops and the two-phase ammonia loops of the Space Station Freedom active thermal control system (ATCS). These models range from large integrated system models with multiple submodels to very detailed subsystem models. An integrated Space Station ATCS model has been created with ten submodels representing five water loops, three ammonia loops, a Freon loop and a thermal submodel representing the air loop. The model, which has approximately 800 FLUINT lumps and 300 thermal nodes, is used to determine the interaction between the multiple fluid loops which comprise the Space Station ATCS. Several detailed models of the flow-through radiator subsystem of the Space Station ATCS have been developed. One model, which has approximately 70 FLUINT lumps and 340 thermal nodes, provides a representation of the ATCS low temperature radiator array with two fluid loops connected only by conduction through the radiator face sheet. The detailed models are used to determine parameters such as radiator fluid return temperature, fin efficiency, flow distribution and total heat rejection for the baseline design as well as proposed alternate designs. SINDA/FLUINT has also been used as a design tool for several systems using pressurized gasses. One model examined the pressurization and depressurization of the Space Station airlock under a variety of operating conditions including convection with the side walls and internal cooling. Another model predicted the performance of a new generation of manned maneuvering units. This model included high pressure gas depressurization, internal heat transfer and supersonic thruster equations. The results of both models were used to size components, such as the

  19. The History of the Animal Care Program at NASA Johnson Space Center

    Science.gov (United States)

    Khan-Mayberry, Noreen; Bassett, Stephanie

    2010-01-01

    This slide presentation reviews the work of the Animal Care Program (ACP). Animals have been used early in space exploration to ascertain if it were possible to launch a manned spacecraft. The program is currently involved in many studies that assist in enhancing the scientific knowledge of the effect of space travel. The responsibilities of the ACP are: (1) Organize and supervise animal care operations & activities (research, testing & demonstration). (2) Maintain full accreditation by the International Association for the Assessment and Accreditation of Laboratory Animal Care (AAALAC) (3) Ensure protocol compliance with IACUC recommendations (4) Training astronauts for in-flight animal experiments (5) Maintain accurate & timely records for all animal research testing approved by JSC IACUC (6) Organize IACUC meetings and assist IACUC members (7) Coordinate IACUC review of the Institutional Program for Humane Care and Use of Animals (every 6 mos)

  20. Configuration Management (CM) Support for KM Processes at NASA/Johnson Space Center (JSC)

    Science.gov (United States)

    Cioletti, Louis

    2010-01-01

    Collection and processing of information are critical aspects of every business activity from raw data to information to an executable decision. Configuration Management (CM) supports KM practices through its automated business practices and its integrated operations within the organization. This presentation delivers an overview of JSC/Space Life Sciences Directorate (SLSD) and its methods to encourage innovation through collaboration and participation. Specifically, this presentation will illustrate how SLSD CM creates an embedded KM activity with an established IT platform to control and update baselines, requirements, documents, schedules, budgets, while tracking changes essentially managing critical knowledge elements.

  1. User and Task Analysis of the Flight Surgeon Console at the Mission Control Center of the NASA Johnson Space Center

    Science.gov (United States)

    Johnson, Kathy A.; Shek, Molly

    2003-01-01

    Astronauts in a space station are to some extent like patients in an intensive care unit (ICU). Medical support of a mission crew will require acquisition, transmission, distribution, integration, and archiving of significant amounts of data. These data are acquired by disparate systems and will require timely, reliable, and secure distribution to different communities for the execution of various tasks of space missions. The goal of the Comprehensive Medical Information System (CMIS) Project at Johnson Space Center Flight Medical Clinic is to integrate data from all Medical Operations sources, including the reference information sources and the electronic medical records of astronauts. A first step toward the full CMIS implementation is to integrate and organize the reference information sources and the electronic medical record with the Flight Surgeons console. In order to investigate this integration, we need to understand the usability problems of the Flight Surgeon's console in particular and medical information systems in general. One way to achieve this understanding is through the use of user and task analyses whose general purpose is to ensure that only the necessary and sufficient task features that match users capacities will be included in system implementations. The goal of this summer project was to conduct user and task analyses employing cognitive engineering techniques to analyze the task of the Flight Surgeons and Biomedical Engineers (BMEs) while they worked on Console. The techniques employed were user interviews, observations and a questionnaire to collect data for which a hierarchical task analysis and an information resource assessment were performed. They are described in more detail below. Finally, based on our analyses, we make recommendations for improvements to the support structure.

  2. NASA Johnson Space Center's Planetary Sample Analysis and Mission Science (PSAMS) Laboratory: A National Facility for Planetary Research

    Science.gov (United States)

    Draper, D. S.

    2016-01-01

    NASA Johnson Space Center's (JSC's) Astromaterials Research and Exploration Science (ARES) Division, part of the Exploration Integration and Science Directorate, houses a unique combination of laboratories and other assets for conducting cutting edge planetary research. These facilities have been accessed for decades by outside scientists, most at no cost and on an informal basis. ARES has thus provided substantial leverage to many past and ongoing science projects at the national and international level. Here we propose to formalize that support via an ARES/JSC Plane-tary Sample Analysis and Mission Science Laboratory (PSAMS Lab). We maintain three major research capa-bilities: astromaterial sample analysis, planetary process simulation, and robotic-mission analog research. ARES scientists also support planning for eventual human ex-ploration missions, including astronaut geological training. We outline our facility's capabilities and its potential service to the community at large which, taken together with longstanding ARES experience and expertise in curation and in applied mission science, enable multi-disciplinary planetary research possible at no other institution. Comprehensive campaigns incorporating sample data, experimental constraints, and mission science data can be conducted under one roof.

  3. D-Side: A Facility and Workforce Planning Group Multi-criteria Decision Support System for Johnson Space Center

    Science.gov (United States)

    Tavana, Madjid

    2005-01-01

    "To understand and protect our home planet, to explore the universe and search for life, and to inspire the next generation of explorers" is NASA's mission. The Systems Management Office at Johnson Space Center (JSC) is searching for methods to effectively manage the Center's resources to meet NASA's mission. D-Side is a group multi-criteria decision support system (GMDSS) developed to support facility decisions at JSC. D-Side uses a series of sequential and structured processes to plot facilities in a three-dimensional (3-D) graph on the basis of each facility alignment with NASA's mission and goals, the extent to which other facilities are dependent on the facility, and the dollar value of capital investments that have been postponed at the facility relative to the facility replacement value. A similarity factor rank orders facilities based on their Euclidean distance from Ideal and Nadir points. These similarity factors are then used to allocate capital improvement resources across facilities. We also present a parallel model that can be used to support decisions concerning allocation of human resources investments across workforce units. Finally, we present results from a pilot study where 12 experienced facility managers from NASA used D-Side and the organization's current approach to rank order and allocate funds for capital improvement across 20 facilities. Users evaluated D-Side favorably in terms of ease of use, the quality of the decision-making process, decision quality, and overall value-added. Their evaluations of D-Side were significantly more favorable than their evaluations of the current approach. Keywords: NASA, Multi-Criteria Decision Making, Decision Support System, AHP, Euclidean Distance, 3-D Modeling, Facility Planning, Workforce Planning.

  4. Cryogenic Testing of the Thermal Vacuum Chamber and Ground Support Equipment for the James Webb Space Telescope in Chamber A at Johnson Space Center

    Science.gov (United States)

    DiPirro, M.; Homan, J.; Havey, K.; Ousley, W.

    2017-01-01

    The James Webb Space Telescope (JWST) is the largest cryogenic instrument telescope to be developed for space flight. The telescope will be passively cooled to 50 K and the instrument package will be at 40 K with the mid-infrared instrument at 6 K. The final cryogenic test of the Optical Telescope Element (OTE) and Integrated Science Instrument Module (ISIM) as an assembly (OTE + ISIM OTIS) will be performed in the largest 15 K chamber in the world, Chamber A at Johnson Space Center. The planned duration of this test will be 100 days in the middle of 2017. Needless to say, this ultimate test of OTIS, the cryogenic portion of JWST will be crucial in verifying the end-to-end performance of JWST. A repeat of this test would not only be expensive, but would delay the launch schedule (currently October 2018). Therefore a series of checkouts and verifications of the chamber and ground support equipment were planned and carried out between 2012 and 2016. This paper will provide a top-level summary of those tests, trades in coming up with the test plan, as well as some details of individual issues that were encountered and resolved in the course of testing.

  5. Selection of a Data Acquisition and Controls System Communications and Software Architecture for Johnson Space Center's Space Environment Simulation Laboratory Thermal and Vacuum Test Facilities

    Science.gov (United States)

    Jordan, Eric A.

    2004-01-01

    Upgrade of data acquisition and controls systems software at Johnson Space Center's Space Environment Simulation Laboratory (SESL) involved the definition, evaluation and selection of a system communication architecture and software components. A brief discussion of the background of the SESL and its data acquisition and controls systems provides a context for discussion of the requirements for each selection. Further framework is provided as upgrades to these systems accomplished in the 1990s and in 2003 are compared to demonstrate the role that technological advances have had in their improvement. Both of the selections were similar in their three phases; 1) definition of requirements, 2) identification of candidate products and their evaluation and testing and 3) selection by comparison of requirement fulfillment. The candidates for the communication architecture selection embraced several different methodologies which are explained and contrasted. Requirements for this selection are presented and the selection process is described. Several candidates for the software component of the data acquisition and controls system are identified, requirements for evaluation and selection are presented, and the evaluation process is described.

  6. Selection of a Data Acquisition and Controls System Communications and Software Architecture for Johnson Space Center's Space Environment Simulation Laboratory Thermal and Vacuum Test Facilities

    Science.gov (United States)

    Jordan, Eric A.

    2004-01-01

    Upgrade of data acquisition and controls systems software at Johnson Space Center's Space Environment Simulation Laboratory (SESL) involved the definition, evaluation and selection of a system communication architecture and software components. A brief discussion of the background of the SESL and its data acquisition and controls systems provides a context for discussion of the requirements for each selection. Further framework is provided as upgrades to these systems accomplished in the 1990s and in 2003 are compared to demonstrate the role that technological advances have had in their improvement. Both of the selections were similar in their three phases; 1) definition of requirements, 2) identification of candidate products and their evaluation and testing and 3) selection by comparison of requirement fulfillment. The candidates for the communication architecture selection embraced several different methodologies which are explained and contrasted. Requirements for this selection are presented and the selection process is described. Several candidates for the software component of the data acquisition and controls system are identified, requirements for evaluation and selection are presented, and the evaluation process is described.

  7. The Johnson Space Center Management Information Systems (JSCMIS). 1: Requirements Definition and Design Specifications for Versions 2.1 and 2.1.1. 2: Documented Test Scenario Environments. 3: Security Design and Specifications

    Science.gov (United States)

    1986-01-01

    The Johnson Space Center Management Information System (JSCMIS) is an interface to computer data bases at NASA Johnson which allows an authorized user to browse and retrieve information from a variety of sources with minimum effort. This issue gives requirements definition and design specifications for versions 2.1 and 2.1.1, along with documented test scenario environments, and security object design and specifications.

  8. Dubin-Johnson syndrome

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/article/000242.htm Dubin-Johnson syndrome To use the sharing features on this page, please enable JavaScript. Dubin-Johnson syndrome (DJS) is a disorder passed down ...

  9. Presidents as Symbols: An Investigation of John F. Kennedy's, Lyndon B. Johnson's, and Ronald Reagan's Use of Presidential Allusions.

    Science.gov (United States)

    Smith-Howell, Deborah

    This paper presents an examination of United States presidents' names as symbols. In developing the analysis, the paper: (1) reviews multiple perspectives which suggest that allusions to past presidents (such as Thomas Jefferson, Abraham Lincoln, or Franklin Roosevelt) are significant political symbols; (2) discusses how allusions to past…

  10. Thermal Nondestructive Evaluation Report: Inspection of the Refurbished Manipulator Arm System in the Manipulator Development Facility at Johnson Space Center 10-12 January 2001

    Science.gov (United States)

    Cramer, K. Elliott

    2002-01-01

    On 4 December 2002, a failure of the Refurbished Manipulator Arm System (RMAS) occurred in the Manipulator Development Facility (MDF) at Johnson Space Center. When the Test Director commanded a should pitch maneuver to lift the arm from its payload bay pedestal, the yaw controls failed. This, coupled with a gravitational forces (due to the angle of the shoulder joint with respect to vertical), resulted in uncontrolled arm motion. The shoulder yaw joint moved approximately 20 degrees, causing the extended arm to strike and severely damage the port side MDF catwalk handrails. The arm motion stopped after impact with the handrails. On 10-12 January 2001, inspections were performed on the port face of the lower and upper arms of the RMAS using a infrared thermography developed at Langley Research Center. This paper presents the results of those nondestructive inspections and provides a complete description of the anomalies found and their locations.

  11. Behavioral Health and Performance Operations at the NASA Johnson Space Center: A Comprehensive Program that Addresses Flight and Spaceflight Duty Adaptability

    Science.gov (United States)

    Beven, G. E.

    2017-01-01

    NASA astronauts on active status require medical certification for aircraft flying duties as well as readiness for long duration spaceflight training, launch to the International Space Station (ISS), and mission continuation during spaceflight operations. Behavioral fitness and adaptability is an inherent component of medical certification at NASA and requires a unique approach that spans the professional life-span of all active astronauts. TOPIC: This presentation will address the Behavioral Health and Performance (BHP) operations program at the Johnson Space Center. Components of BHP operations include astronaut selection, as well as annual, elective, preflight, inflight, and postflight BHP assessments. Each aspect of the BHP operations program will be discussed, with a focus on behavioral fitness determination and resultant outcomes. Specifically, astronaut selection generates a rating of suitability for long duration spaceflight as well as psychiatric qualification; annual, preflight and postflight BHP assessments provoke a decision regarding the presence of any aeromedical concerns; and inflight assessment requires a conclusion pertaining to mission impact. The combination of these elements provide for a unique, comprehensive approach to flight and spaceflight adaptability. APPLICATIONS: Attendees will understand the differing facets of NASA's comprehensive BHP operations program that occurs over the course of an astronaut's career and be able to compare and contrast this to the Adaptability Rating for Military Aviation (ARMA) and proposed models presented by others on this panel.

  12. Analysis of the lettuce data from the variable pressure growth chamber at NASA Johnson Space Center: A three-stage nested design model

    Science.gov (United States)

    Lee, Tze-San

    1992-01-01

    A model of three-stage nested experimental design was applied to analyze the lettuce data obtained from the variable pressure growth chamber test bed at NASA-Johnson Space Center. From the results of an application of the analysis of variance and covariance on the data set, it was noted that all of the (uncontrollable) factors, Side, Zone, Height and (controllable) PAR (photosynthetically active radiation), had nonhomogeneous effects on the dry weight of the edible biomass of lettuce per pot. Incidentally, the variations accountable to the (uncontrollable) factorial heterogeneities are merely 9 percent and 17 percent of the total variation for both the first and second crop test, respectively. After adjusting for the PAR as a covariate in the no-intercept model, the accountable variations to all the four factors are 94 percent and 92 percent for the first and the second crop test, respectively. With the use of a no-intercept simple linear regression model, the accountable variations to the factor PAR are 92 percent and 90 percent for the first and the second crop test, respectively. Evidently, the (controllable) factor PAR is the dominating one.

  13. Space Shuttle telemetry analysis by a real time expert system

    Science.gov (United States)

    Muratore, John F.

    1987-01-01

    During early manned spacecraft operations, the primary role of ground telemetry systems was data display to flight controllers. As manned spaceflights have increased in complexity, greater demands have been placed on flight controllers to simultaneously monitor systems and replan systems operations. This has led to interest in automated telemetry monitoring systems to decrease the workload on flight controllers. The Mission Operations Directorate at the Lyndon B. Johnson Space Center has developed a five layer model to integrate various monitoring and analysis technologies such as digital filtering, fault detection algorithms, and expert systems. The paper describes the five layer model and explains how it has been used to guide prototyping efforts at Mission Control. Results from some initial expert systems are presented. The paper also describes the integrated prototype currently under development which implements a real time expert system to assist flight controllers in the Mission Control Center in monitoring Space Shuttle communications systems.

  14. Johnsons Seagrass Critical Habitat

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — These data represent the critical habitat for Johnson's Seagrass as designated by Federal Register Vol. 65, No. 66, Wednesday, April 5, 2000, Rules and Regulations.

  15. Rust Contamination from Water Leaks in the Cosmic Dust Lab and Lunar and Meteorite Thin Sections Labs at Johnson Space Center

    Science.gov (United States)

    Kent, J. J.; Berger, E. L.; Fries, M. D.; Bastien, R.; McCubbin, F. M.; Pace, L.; Righter, K.; Sutter, B.; Zeigler, R. A.; Zolensky, M.

    2017-01-01

    On the early morning of September 15th, 2016, on the first floor of Building 31 at NASA-Johnson Space Center, the hose from a water chiller ruptured and began spraying water onto the floor. The water had been circulating though old metal pipes, and the leaked water contained rust-colored particulates. The water flooded much of the western wing of the building's ground floor before the leak was stopped, and it left behind a residue of rust across the floor, most notably in the Apollo and Meteorite Thin Section Labs and Sample Preparation Lab. No samples were damaged in the event, and the affected facilities are in the process of remediation. At the beginning of 2016, a separate leak occurred in the Cosmic Dust Lab, located in the same building. In that lab, a water leak occurred at the bottom of the sink used to clean the lab's tools and containers with ultra-pure water. Over years of use, the ultra-pure water eroded the metal sink piping and leaked water onto the inside of the lab's flow bench. This water also left behind a film of rusty material. The material was cleaned up and the metal piping was replaced with PVC pipe and sealed with Teflon plumber's tape. Samples of the rust detritus were collected from both incidents. These samples were imaged and analyzed to determine their chemical and mineralogical compositions. The purpose of these analyses is to document the nature of the detritus for future reference in the unlikely event that these materials occur as contaminants in the Cosmic Dust samples or Apollo or Meteorite thin sections.

  16. A generalization of the Lyndon-Hochschild-Serre spectral sequence for polynomial cohomology

    CERN Document Server

    Ramsey, Bobby W

    2007-01-01

    We construct an analogue of the Lyndon-Hochschild-Serre spectral sequence in the context of polynomial cohomology, for group extensions. If G is an extension of Q by H, then the spectral sequence converges to the polynomial cohomology of G. For the polynomial extensions of Noskov with normal subgroup isocohomological, the E_2 term is the polynomial cohomology of Q with coefficients in the polynomial cohomology of H. When both Q and H are isocohomological G must be as well. By referencing results of Connes-Moscovici and Noskov, if Q and H are both isocohomological and have the Rapid Decay property of Jolissaint, then G satisfies the Novikov Conjecture.

  17. Integrated water management system - Description and test results. [for Space Station waste water processing

    Science.gov (United States)

    Elden, N. C.; Winkler, H. E.; Price, D. F.; Reysa, R. P.

    1983-01-01

    Water recovery subsystems are being tested at the NASA Lyndon B. Johnson Space Center for Space Station use to process waste water generated from urine and wash water collection facilities. These subsystems are being integrated into a water management system that will incorporate wash water and urine processing through the use of hyperfiltration and vapor compression distillation subsystems. Other hardware in the water management system includes a whole body shower, a clothes washing facility, a urine collection and pretreatment unit, a recovered water post-treatment system, and a water quality monitor. This paper describes the integrated test configuration, pertinent performance data, and feasibility and design compatibility conclusions of the integrated water management system.

  18. Integrated water management system - Description and test results. [for Space Station waste water processing

    Science.gov (United States)

    Elden, N. C.; Winkler, H. E.; Price, D. F.; Reysa, R. P.

    1983-01-01

    Water recovery subsystems are being tested at the NASA Lyndon B. Johnson Space Center for Space Station use to process waste water generated from urine and wash water collection facilities. These subsystems are being integrated into a water management system that will incorporate wash water and urine processing through the use of hyperfiltration and vapor compression distillation subsystems. Other hardware in the water management system includes a whole body shower, a clothes washing facility, a urine collection and pretreatment unit, a recovered water post-treatment system, and a water quality monitor. This paper describes the integrated test configuration, pertinent performance data, and feasibility and design compatibility conclusions of the integrated water management system.

  19. Using Remotely Sensed Data for Climate Change Mitigation and Adaptation: A Collaborative Effort Between the Climate Change Adaptation Science Investigators Workgroup (CASI), NASA Johnson Space Center, and Jacobs Technology

    Science.gov (United States)

    Jagge, Amy

    2016-01-01

    With ever changing landscapes and environmental conditions due to human induced climate change, adaptability is imperative for the long-term success of facilities and Federal agency missions. To mitigate the effects of climate change, indicators such as above-ground biomass change must be identified to establish a comprehensive monitoring effort. Researching the varying effects of climate change on ecosystems can provide a scientific framework that will help produce informative, strategic and tactical policies for environmental adaptation. As a proactive approach to climate change mitigation, NASA tasked the Climate Change Adaptation Science Investigators Workgroup (CASI) to provide climate change expertise and data to Center facility managers and planners in order to ensure sustainability based on predictive models and current research. Generation of historical datasets that will be used in an agency-wide effort to establish strategies for climate change mitigation and adaptation at NASA facilities is part of the CASI strategy. Using time series of historical remotely sensed data is well-established means of measuring change over time. CASI investigators have acquired multispectral and hyperspectral optical and LiDAR remotely sensed datasets from NASA Earth Observation Satellites (including the International Space Station), airborne sensors, and astronaut photography using hand held digital cameras to create a historical dataset for the Johnson Space Center, as well as the Houston and Galveston area. The raster imagery within each dataset has been georectified, and the multispectral and hyperspectral imagery has been atmospherically corrected. Using ArcGIS for Server, the CASI-Regional Remote Sensing data has been published as an image service, and can be visualized through a basic web mapping application. Future work will include a customized web mapping application created using a JavaScript Application Programming Interface (API), and inclusion of the CASI data

  20. Genetics Home Reference: Dubin-Johnson syndrome

    Science.gov (United States)

    ... Facebook Twitter Home Health Conditions Dubin-Johnson syndrome Dubin-Johnson syndrome Printable PDF Open All Close All ... Javascript to view the expand/collapse boxes. Description Dubin-Johnson syndrome is a condition characterized by jaundice, ...

  1. 77 FR 35978 - Johnson & Johnson and Synthes, Inc.; Analysis of Agreement Containing Consent Orders to Aid...

    Science.gov (United States)

    2012-06-15

    ... Johnson & Johnson and Synthes, Inc.; Analysis of Agreement Containing Consent Orders to Aid Public Comment... Comment part of the SUPPLEMENTARY INFORMATION section below. Write ``Johnson & Johnson, File No. 111 0160... consider your comment, we must receive it on or before July 12, 2012. Write ``Johnson & Johnson, File No...

  2. Reply to comment by William P. Johnson et al. on ‘‘Transport and fate of bacteria in porous media: Coupled effects of chemical conditions and pore space geometry’’

    Science.gov (United States)

    We are grateful for this opportunity to address the comment of Johnson et al. [2009] on our manuscript. Their comment concerns the nature of colloid association with solid surfaces via the secondary energy minimum. There are currently different opinions in the literature on this topic. Johnson et al...

  3. Obituary: Dr Dianne Johnson (1947-2012)

    CERN Document Server

    Hamacher, Duane W

    2014-01-01

    It is with great sadness that I report the passing of Dr Dianne Johnson in May 2012. Dr Johnson was a pivotal and important figure in the field of Australian cultural astronomy and in the campaign for Aboriginal rights.

  4. Space Shuttle vernier thruster long-life chamber development

    Science.gov (United States)

    Krohn, Douglas D.

    1990-01-01

    The Space Shuttle Reaction Control Subsystem (RCS) vernier thruster is a pressure fed engine that utilizes storable propellants to provide precise attitude control for the Orbiter. The current vernier thruster is life limited due to its chamber material. By developing an iridium-lined rhenium chamber for the vernier, substantial gains could be achieved in the operational life of the chamber. The present RCS vernier, its requirements, operating characteristics, and life limitations are described. The current technology status of iridium-lined rhenium is presented along with a description of the operational life capabilities to be gained from implementing this material into the design of a long life vernier chamber. Discussion of the proposed demonstration program to be performed by the NASA Lyndon B. Johnson Space Center to attain additional insight into the application of this technology to the RCS vernier, includes the technical objectives, approach, and program schedule. The plans for further development and integration with the Orbiter and the Shuttle system are also presented.

  5. Johnson-Wax Mijdrecht (Holanda

    Directory of Open Access Journals (Sweden)

    Maaskant van Dommelen Kroos, Arquitectos

    1972-09-01

    Full Text Available This Johnson factory, ideally located in the industrial zone of Mijdrecht, is an original building in both its design and its position on a lake which acts as a reflector. The set of offices is divided into three parts, taking into account that it has to function as a centre of international sales as well. Its special shape is perfectly suitable for future development, conditioned to the construction of a new adjacent road.Situada en la zona industrial de Mijdrecht, óptima por su emplazamiento, esta fábrica de la casa Johnson es un edificio original por su especial diseño y por su ubicación sobre un estanque, que actúa de elemento reflector. El conjunto de oficinas está dividido en tres partes, teniendo en cuenta que, además, ha de funcionar como centro de ventas internacional. Asimismo, su especial configuración está perfectamente adaptada a un futuro plan de ampliación de las instalaciones, condicionado a la construcción de una nueva carretera adyacente.

  6. 76 FR 16447 - ETHICON, a Subsidiary of Johnson & Johnson Including On-Site Leased Workers From Kelly Temporary...

    Science.gov (United States)

    2011-03-23

    ... Employment and Training Administration ETHICON, a Subsidiary of Johnson & Johnson Including On-Site Leased... Johnson & Johnson, including on-site leased workers from Kelly Temporary Services, San Angelo, Texas. The... certification of eligibility to apply for adjustment assistance was issued for all workers of ETHICON, A Johnson...

  7. History and Evolution of the Johnson Criteria.

    Energy Technology Data Exchange (ETDEWEB)

    Sjaardema, Tracy A. [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Smith, Collin S. [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Birch, Gabriel Carisle [Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

    2015-07-01

    The Johnson Criteria metric calculates probability of detection of an object imaged by an optical system, and was created in 1958 by John Johnson. As understanding of target detection has improved, detection models have evolved to better model additional factors such as weather, scene content, and object placement. The initial Johnson Criteria, while sufficient for technology and understanding at the time, does not accurately reflect current research into target acquisition and technology. Even though current research shows a dependence on human factors, there appears to be a lack of testing and modeling of human variability.

  8. The NASA OCEAN project--an ocean-space analog

    Science.gov (United States)

    Chamberland, D

    1996-01-01

    An advanced life support system (ALS) with bioregenerative components may one day be required for long-term, deep space exploration, in extended missions to Mars or in establishing long-term bases on the moon. Intensive research programs on such ALS systems have been ongoing throughout the National Aeronautics and Space Administration (NASA) since 1988. Notably, projects have been initiated at the John F. Kennedy Space Center (KSC), Ames Research Center (ARC), and the Lyndon B. Johnson Space Center (JSC). The KSC ALS work has been named the "Breadboard Project" because of its approach developing the components and combining them into a breadboard to understanding the bioregenerative ALS picture [also called a Controlled Ecological Life Support System (CELSS)] in smaller pieces, similar to an electronic "breadboard." The Breadboard Project has been involved for 7 years in the study of higher crops grown in a 113 m3 chamber--the longest operating and largest such closed, controlled growth chamber in the world. This chamber has proven itself to be very successful in growing a wide variety of crops from seedlings to harvest and in helping researchers understand the complex biological cycle of such edible plants in closed, environmentally controlled environments. Because the system's ultimate use will be a more challenging environment, moving a specially designed piece of the system into extreme conditions was an important test. Engineers at KSC developed a compact, portable, functional plant module for testing in the world's only fixed seafloor laboratory at Key Largo, FL. The laboratory, called MarineLab, is operated out of the facilities of the Marine Resources Development Foundation in a lagoon of some 10 m depth. The project was called the OCEAN project (Ocean CELSS Experimental Analog NASA).

  9. Geology of the Johnson River Area Alaska

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — The vegetation, topography, and geology of the Johnson River area are representative of the entire eastern interior region of Alaska. This area has a vegetational...

  10. Scattering theory of the Johnson spin transistor

    OpenAIRE

    Geux, Linda S.; Brataas, Arne; Bauer, Gerrit E. W.

    1999-01-01

    We discuss a simple, semiclassical scattering theory for spin-dependent transport in a many-terminal formulation, with special attention to the four terminal device of Johnson referred to as spin transistor

  11. Space Shuttle Orbital Maneuvering Subsystem (OMS) Engine Propellant Leakage Ball-Valve Shaft Seals

    Science.gov (United States)

    Lueders, Kathy; Buntain, Nick; Fries, Joseph (Technical Monitor)

    1999-01-01

    Evidence of propellant leakage across ball-valve shaft seals has been noted during the disassembly of five flight engines and one test engine at the NASA Lyndon B. Johnson Space Center, White Sands Test Facility. Based on data collected during the disassembly of these five engines, the consequences of propellant leakage across the ball-valve shaft seals can be divided into four primary areas of concern: Damage to the ball-valve pinion shafts, damage to sleeved bearings inside the ball-valve and actuator assemblies, degradation of the synthetic rubber o-rings used in the actuator assemblies, and corrosion and degradation to the interior of the actuator assemblies. The exact time at which leakage across the ball-valve shaft seals occurs has not been determined, however, the leakage most likely occurs during engine firings when, depending on the specification used, ball-valve cavity pressures range as high as 453 to 550 psia. This potential pressure range for the ball-valve cavities greatly exceeds the acceptance leakage test pressure of 332 psia. Since redesign and replacement of the ball-valve shaft seals is unlikely, the near term solution to prevent damage that occurs from shaft-seal leakage is to implement a routine overhaul and maintenance program for engines in the fleet. Recommended repair, verification, and possible preventative maintenance measures are discussed in the paper.

  12. A comparative research on the corporate culture of Johnson & Johnson and Tongrentang

    Institute of Scientific and Technical Information of China (English)

    雷露

    2015-01-01

    Johnson & Johnson and Tongrentang are two famous brands that have maintained leading positions in the pharmaceutical industry al through the history. One of the many things that have made them successful is that they have great corporate cultures which are wel reflected in the business principle and organizational systems. This essay is a comparative research on the corporate cultures of Johnson & Johnson and Tongrentang and is aimed to shed some light on how the cultures are formed and how they pervade in the organizations.

  13. Stevens Johnsons syndrom og toksisk epidermal nekrolyse

    DEFF Research Database (Denmark)

    Kaur-Knudsen, Diljit; Zachariae, Claus; Thomsen, Simon Francis

    2013-01-01

    Stevens-Johnson syndrome and toxic epidermal necrolysis are acute mucocutaneous diseases primarily due to drug intake. The diseases are characterised by the separation of epidermis from dermis which can be life-threatening. Mortality is often caused by sepsis and multiple organ failure. The most...

  14. Level II scour analysis for Bridge 17 (LYNDTH00020017) on Town Highway 2, crossing Hawkins Brook, Lyndon, Vermont

    Science.gov (United States)

    Wild, Emily C.; Medalie, Laura

    1997-01-01

    This report provides the results of a detailed Level II analysis of scour potential at structure LYNDTH00020017 on Town Highway 2 crossing Hawkins Brook, Lyndon, Vermont (figures 1–8). A Level II study is a basic engineering analysis of the site, including a quantitative analysis of stream stability and scour (U.S. Department of Transportation, 1993). Results of a Level I scour investigation also are included in Appendix E of this report. A Level I investigation provides a qualitative geomorphic characterization of the study site. Information on the bridge, gleaned from Vermont Agency of Transportation (VTAOT) files, was compiled prior to conducting Level I and Level II analyses and is found in Appendix D.The site is in the Green Mountain section of the New England physiographic province in northeastern Vermont. The 7.7-mi2 drainage area is in a predominantly rural and forested basin. In the vicinity of the study site, the surface cover is forest on the left and right upstream overbanks. The downstream left and right overbanks are brushland.In the study area, Hawkins Brook has an incised, sinuous channel with a slope of approximately 0.02 ft/ft, an average channel top width of 78 ft and an average bank height of 7.3 ft. The channel bed material ranges from sand to boulder with a median grain size (D50) of 46.6 mm (0.153 ft). The geomorphic assessment at the time of the Level I and Level II site visit on August 4, 1995, indicated that the reach was laterally unstable with the presence of point bars and side bars.The Town Highway 2 crossing of Hawkins Brook is a 49-ft-long, two-lane bridge consisting of a 46-foot steel-stringer span (Vermont Agency of Transportation, written communication, March 27, 1995). The opening length of the structure parallel to the bridge face is 43 ft. The bridge is supported by vertical, concrete abutments with wingwalls. The channel is skewed approximately 45 degrees to the opening while the computed opening-skew-to-roadway is zero

  15. Recent experience in health promotion at Johnson & Johnson: lower health spending, strong return on investment.

    Science.gov (United States)

    Henke, Rachel M; Goetzel, Ron Z; McHugh, Janice; Isaac, Fik

    2011-03-01

    Johnson & Johnson Family of Companies introduced its worksite health promotion program in 1979. The program evolved and is still in place after more than thirty years. We evaluated the program's effect on employees' health risks and health care costs for the period 2002-08. Measured against similar large companies, Johnson & Johnson experienced average annual growth in total medical spending that was 3.7 percentage points lower. Company employees benefited from meaningful reductions in rates of obesity, high blood pressure, high cholesterol, tobacco use, physical inactivity, and poor nutrition. Average annual per employee savings were $565 in 2009 dollars, producing a return on investment equal to a range of $1.88-$3.92 saved for every dollar spent on the program. Because the vast majority of US adults participate in the workforce, positive effects from similar programs could lead to better health and to savings for the nation as a whole.

  16. 50 CFR 226.213 - Critical habitat for Johnson's seagrass.

    Science.gov (United States)

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false Critical habitat for Johnson's seagrass... Critical habitat for Johnson's seagrass. Critical habitat is designated to include substrate and water in... Johnson's seagrass. (a) A portion of the Indian River, Florida, north of Sebastian Inlet Channel,...

  17. An open letter to Magic Johnson.

    Science.gov (United States)

    Pazin, G J

    1992-01-01

    The last installment in this series dealt with post-test counseling of a person whose HIV test was negative. The plan was to provide counseling for an HIV-infected person in this installment. NBA basketball star Magic Johnson's surprise announcement on November 7, 1991, of his infection with HIV has provided an unexpected opportunity to counsel a well-known person through an "open letter."

  18. Chronic Conditions: Beckett, Bergson and Samuel Johnson.

    Science.gov (United States)

    Maude, Ulrika

    2016-06-01

    This article analyses the work of the twentieth-century late modernist Samuel Beckett, in light of the turn-of-the-century anti-rationalist Henri Bergson (1859-1941) and the eighteenth-century neoclassicist Samuel Johnson (1709-1784). What unites these three very different thinkers is a concern over habitual, automatic and involuntary behavior, which in all three cases has a distinctly neurological dimension. Beckett's writing explores the Bergsonian notion, informed by medicine and experimental psychology, of the limitations of agency, of "the deep-seated recalcitrance of matter," and of the human as always already inflicted by the mechanical, a fact that is poignantly highlighted by the case of Samuel Johnson. Through his encounter with Johnson, Beckett registers a paradigm shift in the understanding of subjectivity. Whereas Bergson aims, throughout his career, to contest the mechanical, habitual and automatic that threaten to encrust themselves upon the living, in Beckett's often uncannily Johnsonian writing, the habitual and the automatic become progressively more central, until in the late works, habit and mechanical behavior constitute a tenuous, fraught and primitive ontology, the residues of an agential self.

  19. Properties of Codes in the Johnson Scheme

    CERN Document Server

    Silberstein, Natalia

    2010-01-01

    Codes which attain the sphere packing bound are called perfect codes. The most important metrics in coding theory on which perfect codes are defined are the Hamming metric and the Johnson metric. While for the Hamming metric all perfect codes over finite fields are known, in the Johnson metric it was conjectured by Delsarte in 1970's that there are no nontrivial perfect codes. The general nonexistence proof still remains the open problem. In this work we examine constant weight codes as well as doubly constant weight codes, and reduce the range of parameters in which perfect codes may exist in both cases. We start with the constant weight codes. We introduce an improvement of Roos' bound for one-perfect codes, and present some new divisibility conditions, which are based on the connection between perfect codes in Johnson graph J(n,w) and block designs. Next, we consider binomial moments for perfect codes. We show which parameters can be excluded for one-perfect codes. We examine two-perfect codes in J(2w,w) a...

  20. Samuel Johnson’s Military Writings

    Science.gov (United States)

    1992-01-01

    and all regard to the welfare of others overborne by a perpetual attention to immediate advantage. . . . If men, formed by education and enlightened by...spreads her charms in vain; ’Think nothing gained,’ he cries, ’till nought remain, ’On Moscow’s walls till Gothic standards fly, ’And all be mine beneath...of the Enlightenment for what appeared to be the vestige of a barbarous past.ŕ 1 As my chapter 2 points out (p. 14, note 15), Johnson was indeed

  1. Drugs Induced Stevens-Johnson Syndrome

    Directory of Open Access Journals (Sweden)

    Elif ÖNDER

    2010-05-01

    Full Text Available Stevens Johnson Syndrome (SJS is a life threatening mucocutaneous skin disease that mostlydeveloped after using some drug. SJS mostly appear between 2-4th decades. Mucocutaneouslesions were seen between 1-14 days of drug intake. And these lesions spread diffusely all aroundthe body. First treatment choice is the stopping of drug that cause SJS and giving supportingtreatment. After understanding of underlying cytotoxic and immunological mechanism of SJS,new treatment approaches were developed and mortality of disease was reduced. We hereinreport a short review of drug induced SJS and its treatment.

  2. LYNDON STATE COLLEGE SINIF ÖĞRETMENLİĞİ EĞİTİMİ PROGRAMINININ OKUL UYGULAMALARI SÜRECİ

    Directory of Open Access Journals (Sweden)

    Ramazan SAĞ

    2015-04-01

    Full Text Available The process of school practices is a critical element that displays the characteristics of progressivity and integrity between theory and practice in the pre-service teaching curriculum. Designing teaching curriculums in integrity and sequence with its other elements is an important discussion subject. This study is designed to examine school practices of the Lyndon State College (LSC classroom teaching curriculum closely within the framework of its integrative structure. In this study, which is designed according to the illustrative technique of the case study, basic research units are identified as school practice process, supportive elements and problems as well as themes of study at the same time. The data was gathered from the documenatry analysis, and interviewing with students and lectures. It is seen that the courses related to school practices are identified in progressive stages towards preparation, apprenticeship and professionalism. School practice courses are defined together with courses, exams and notices that should be taken prior to and during the time of practice. This shows that the curriculum enhances the integration and sequence between theory and practice as much as it increases the integration degree horizontally and vertically

  3. Material Dialectic. Donald Judd and Philip Johnson

    Directory of Open Access Journals (Sweden)

    María Teresa Muñoz

    2016-05-01

    Full Text Available Abstract The aim of this writing is to consider how a certain material dialectic is stated in the so called Mansana de Chinati, a complex built by the sculptor Donald Judd in the city of Marfa, Texas, from 1974 onwards, when  compared with the two houses built by the architect Philip Johnson in his  state of New Canaan, Connecticut, around 1950. Both in New Canaan and in la Mansana de Chinati we find a dialectical  opposition between industrial and handicraft architecture, as both Philip  Johnson and Donald Judd consider that there is a main architecture, where material and industrial techniques are used, and a subordinate or service  architecture which is built with adobe or brick and handicraft techniques. This latter architecture will embody all the qualities associated with poverty, as material abundance or spatial closure. Nevertheless, the exhibition of poverty has not as its definite aim the domestic handicraft buildings, built with adobe or brick, but it will be at the service of that other architecture, built with industrial techniques, that has to give up comfort and wellbeing o at least conceal them in the form of radical austerity.

  4. Johnson Type Bounds on Constant Dimension Codes

    CERN Document Server

    Xia, Shu-Tao

    2007-01-01

    Very recently, an operator channel was defined by Koetter and Kschischang when they studied random network coding. They also introduced constant dimension codes and demonstrated that these codes can be employed to correct errors and/or erasures over the operator channel. Constant dimension codes are equivalent to the so-called linear authentication codes introduced by Wang, Xing and Safavi-Naini when constructing distributed authentication systems in 2003. In this paper, we study constant dimension codes. It is shown that Steiner structures are optimal constant dimension codes achieving the Wang-Xing-Safavi-Naini bound. Furthermore, we show that constant dimension codes achieve the Wang-Xing-Safavi-Naini bound if and only if they are certain Steiner structures. Then, we derive two Johnson type upper bounds, say I and II, on constant dimension codes. The Johnson type bound II slightly improves on the Wang-Xing-Safavi-Naini bound. Finally, we point out that a family of known Steiner structures is actually a fam...

  5. W.E. Johnson’s ’Sufficientness’ Postulate.

    Science.gov (United States)

    1984-11-22

    then serving to distinguish one element of a sample from another. In the situation envisaged by Johnson, Carnap (sea Section 4 below), and others, a...Johnson’s death, Rudolph Carnap and his students vould, unknowingly, reproduce much of Johnson’s work. In 1945 Carnap introduced the function c* [= P{XT.+l...And Just as Johnson grew uneasy with his combination postulate, so too Carnap would later introduce the family of functions fc: 0 < X < am) (-(ni+k)/N

  6. PCB-Caulk Replacement Project Johnson Space Center Houston, TX

    Science.gov (United States)

    Young, William M.; Stanch, Penney M.; Molenda, William

    2011-01-01

    Wet method reduced exposure by minimizing overall respirable particulate release. Dry method didn't introduce delays for primer/caulk application. Removed caulks came in many forms, from dry powdery to tarry sticky. Varying textures were not sampled or packaged differently. During the course of the project, EPA modified recommended practices to include full containment for exterior caulk removal. Changes are ongoing. Initial recommendations were directed to school buildings. EPA is researching risks due to caulk. Exposure guidance lacking except for 2 of 209 PCB congeners. Work was safely completed on schedule and under budget.

  7. NASA - Johnson Space Center's New Capabilities for Air Purification

    Science.gov (United States)

    Graf, John

    2015-01-01

    NASA has some unique and challenging air purification problems that cannot be adequately met with COTS technology: 1) ammonia removal from air, 2) hydrazine removal from air, 3) CO conversion to CO2 in low temperature, high humidity environments. NASA has sponsored the development of new sorbents and new catalysts. These new sorbents and catalysts work better than COTS technology for our application. If attendees have a need for an effective ammonia sorbent, an effective hydrazine sorbent, or an effective CO conversion catalyst, we should learn to see if NASA sponsored technology development can help.

  8. Water Reclamation Technology Development at Johnson Space Center

    Science.gov (United States)

    Callahan, Michael R.; Pickering, Karen

    2014-01-01

    Who We Are: A staff of approximately 14 BS, MS, and PhD-Level Engineers and Scientists with experience in Aerospace, Civil, Environmental, and Mechanical Engineering, Chemistry, Physical Science and Water Pollution Microbiology. Our Primary Objective: To develop the next generation water recovery system technologies that will support NASA's long duration missions beyond low-earth orbit.

  9. Laverne (Vern) C. Johnson (1925-2016).

    Science.gov (United States)

    Nelson, Paul

    2017-01-01

    Presents an obituary for Laverne (Vern) C. Johnson, who died at his home in La Mesa, California on October 1, 2016. Vern was a clinical psychologist who for two decades focused on a major program of research on sleep and biological rhythms, with particular emphasis on the relation of sleep loss and recovery to human performance, a matter of particular relevance to military service operations, in which variable work shift schedules and sustained performance over extended time periods are common. His publications attest to a core value he advanced throughout his career, namely, that scientific research at its best is a collaborative, team endeavor. (PsycINFO Database Record (c) 2017 APA, all rights reserved).

  10. Stevens-Johnson syndrome in childhood.

    Science.gov (United States)

    Blanco, N; Gutiérrez, B; Valls, I; Puertas, D; Martín, C; Rivera, M; Hernández, Á; Torrelo, A

    2017-05-01

    Stevens-Johnson syndrome and toxic epidermal necrolysis are two serious immune diseases within the context of bullous mucocutaneous syndrome. These have varying degrees of involvement of the skin and usually at least two mucous membranes. Three clinical cases are presented, two of them with significant ophthalmological sequelae, who had received drug treatment as a possible trigger, and another milder clinical case caused by Mycoplasma pneumoniae. The ophthalmologist plays a crucial role in the outcome and eye care of the patient in order to try to avoid the appearance of sequelae and subsequent loss of vision. Copyright © 2016 Sociedad Española de Oftalmología. Publicado por Elsevier España, S.L.U. All rights reserved.

  11. Napoleon Johnson: From NASA to TV to Community College Teaching.

    Science.gov (United States)

    Neal, John

    1994-01-01

    Describes the life and career of Napoleon Johnson, who currently teaches journalism at Houston Community College's Central Campus. Describes Johnson's experiences as a technical writer for NASA and as a television news correspondent, highlighting the positive effects of these experiences on his career as a college instructor. (MAB)

  12. Clinical features of Dubin-Johnson syndrome

    Directory of Open Access Journals (Sweden)

    JI Meng

    2013-04-01

    Full Text Available Dubin-Johnson syndrome (DJS is a rare autosomal recessive disease caused by deficiency of the canalicular multi-specific organic anionic transporter (CMOAT protein. The consequent impairment of conjugated bilirubin secretion into the bile results in hyperbilirubinemia, and the manifestation is black pigment depositing in liver cells under microscope and black liver from macroscopy. However, DJS appears to be a benign disease and no specific treatment has been developed. Misdiagnosis of DJS is common and patients frequently experience repeated visits to physicians during which they undergo a battery of unnecessary clinical testing. This situation may be further complicated by concomitant diseases, which are only recently being recognized and may be the primary etiology or a promoting factor for the patient’s prolonged jaundice. Moreover, the patients who tend to present to clinic during middle and old age which is the rare morbidity age can be easily misdiagnosed. As the disease can be easily ignored. In this review, we summarize the known information regarding DJS pathogenesis, clinical characteristics, and diagnostic methods in order to improve physicians’ awareness of the disease.

  13. Functional summary statistics for the Johnson-Mehl model

    DEFF Research Database (Denmark)

    Møller, Jesper; Ghorbani, Mohammad

    of functional summary statistics. This paper therefore invents four functional summary statistics adapted to the Johnson-Mehl model, with two of them based on the second-order properties and the other two on the nuclei-boundary distances for the associated Johnson-Mehl tessellation. The functional summary...... statistics theoretical properties are investigated, non-parametric estimators are suggested, and their usefulness for model checking is examined in a simulation study. The functional summary statistics are also used for checking fitted parametric Johnson-Mehl models for a neurotransmitters dataset....

  14. Latent Viruses: A Space Travel Hazard??

    Science.gov (United States)

    Ling, P. D.; Peng, R. S.; Pierson, D.; Lednicky, J.; Butel, J. S.

    1999-01-01

    the blood and viral shedding from normal volunteers in a longitudinal study over I year in length. As a comparison, we will measure patterns of viral genome loads and shedding from individuals who are severely immunosuppressed, in whom herpesvirus reactivation or primary infection with a herpesvirus is known to cause complications. In addition, we will proceed to testing ground based analogs in collaboration with Dr. Duane Pierson (Lyndon B. Johnson Space Center). This will include measuring samples obtained from individuals living and working in the extreme environment of Antarctica. We expect to detect viral shedding or reactivation from most of the test groups, although the magnitude of shedding or reactivation cannot be predicted. The data accumulated from studies in this proposal should allow us to evaluate whether events that simulate certain aspects of space flight reactivate viral infections severe enough in nature that they may compromise the success of long-term space flight missions. These studies will also provide a foundation to monitor viral reactivation and shedding from crew members participating in actual space flight missions. We will present data showing the establishment of our QC-PCR assay for detection of EBV.

  15. The Earliest Master: Henry Johnson (1867-1953).

    Science.gov (United States)

    Robinson, Paul

    1982-01-01

    The writings, teachings, scholarship, and contributions of Henry Johnson, considered the "foremost leader in the development of the teaching of history and social studies as a field of specialization" are discussed. (PN)

  16. XXI sajandi kontuurid / Paul Johnson ; refereerinud Mihkel Mutt

    Index Scriptorium Estoniae

    Johnson, Paul

    1997-01-01

    Washingtonis 14.-16. juunini peetud 'Lääne kirjanduse konverentsil' pidas põhiettekande ameerika ajaloolane ja publitsist Paul Johnson. Refereering tema 'XXI sajandi geopoliitiliste ja kultuuriliste väljavaadete' seisukohtadest

  17. Parcels and Land Ownership, Published in 2011, Johnson County Government.

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — This Parcels and Land Ownership dataset as of 2011. The extent of these data is generally Johnson County, IA. This metadata was auto-generated through the Ramona GIS...

  18. XXI sajandi kontuurid / Paul Johnson ; refereerinud Mihkel Mutt

    Index Scriptorium Estoniae

    Johnson, Paul

    1997-01-01

    Washingtonis 14.-16. juunini peetud 'Lääne kirjanduse konverentsil' pidas põhiettekande ameerika ajaloolane ja publitsist Paul Johnson. Refereering tema 'XXI sajandi geopoliitiliste ja kultuuriliste väljavaadete' seisukohtadest

  19. Ocular manifestations and outcome of treatment of Stevens-Johnson ...

    African Journals Online (AJOL)

    Abstract. Background: Stevens-Johnson Syndrome (SJS) is an immune-based ... and cicatrisation occur, resulting in degrees of ocular motility, tear-function, and visual defects. ... Full blood count, urinalysis and HIV tests were all normal.

  20. Stevens-Johnson syndrome induced by phenytoin: a case report

    Directory of Open Access Journals (Sweden)

    Lalkota Prakash Bhanu

    2016-12-01

    Full Text Available Stevens-Johnson syndrome (SJS and Toxic epidermal necrolysis (TEN are rare (one to two per 10,00,00 population per year but life threatening adverse drug reactions. Antiepileptic drugs-induced Stevens-Johnson syndrome (SJS is a life-threatening severe cutaneous adverse reaction, amongst anti-epileptics; carbamazepine and phenytoin are the major culprits. We report here a case of SJS due to phenytoin (CTC vs 2 Grade 3.

  1. Norine G. Johnson (1935-2011).

    Science.gov (United States)

    Cantor, Dorothy W; Goodheart, Carol D

    2012-04-01

    On November 19, 2011, Norine G. Johnson, the ninth woman to serve as president of the American Psychological Association (APA), lost a valiant battle with cancer. Norine's curiosity about her grandmother's strength led to much of her later work on the development of strength and resiliency in adolescent girls and in women. She received her doctorate in 1972, with a minor in child development, and she became one of the first to be considered a pediatric psychologist, a newly emerging specialty. Norine became involved in organized psychology as her children got older. When she learned there had not been a woman president of the Massachusetts Psychological Association (MPA) for almost 50 years, she was appalled. An ardent feminist, who had served on MPA's Board of Directors, she could not let the situation remain that way. She ran for president and won, serving from 1981 to 1983, and then mentored many women colleagues into the role. MPA sent her to the Council of the APA as one of their representatives, and she immediately ran for a seat on the Finance Committee, later serving as chair of the committee. During her tenure on the Finance Committee, she helped create financial policy that changed APA from an organization whose assets were threatened and shrinking to a financially solid association. Norine considered Division 35 (Psychology of Women) to be her home in APA, a place filled with warmth, collegiality, and shared values. She and Judith Worell spearheaded the extremely important and successful 1993 National Conference on Education and Training in Feminist Practice. Norine was elected to the APA Board of Directors in 1997, where she served with distinction, continuing to focus on the financial well-being of the Association. Not surprisingly, she went from that role to being elected APA president. Her focus as president was on the changes in the health care delivery system in the United States. She was a staunch champion of the biopsychosocial model of health

  2. 涨落耗散定理与Johnson-Nyquist噪声%Fluctuation Dissipation Theorem and Johnson-Nyquist Noise

    Institute of Scientific and Technical Information of China (English)

    周腾飞; 姜迪友; 李嵩松

    2012-01-01

    They derive the fluctuation dissipation theorem from the principles of quantum statistical mechanics and prove the Johnson-Nyquist formula on this basis.Finally,the applications of the Johnson-Nyquist formula in calculating the charge qubit′s noise are discussed,and the relationship between the spectral density and the total impedance and the expression for the voltage fluctuations between the terminals of the impedance are gived.%从量子统计力学原理导出了涨落耗散定理,并在此基础上证明了Johnson-Nyquist公式。最后,还讨论了Johnson-Nyquist公式在计算电荷量子比特的噪声中的应用,并给出了谱密度与总阻抗之间的关系及阻抗两端间的电压涨落的表达式。

  3. Zoning Districts, Zoning for each area provided to us from all cities and Johnson County. The only city in Johnson County not included is Gardner at this time., Published in 2007, Johnson County Government.

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Zoning Districts dataset current as of 2007. Zoning for each area provided to us from all cities and Johnson County. The only city in Johnson County not included is...

  4. Discursive Strategies for Crisis Management:A Case Study of the John-son & Johnson TYLENOL® Crisis

    Institute of Scientific and Technical Information of China (English)

    ZHANG Yi-ran

    2016-01-01

    Being able to respond effectively in the event a crisis is relevant to an organization’s survival. Whether or not an orga-nization is prepared for a potential crisis depends upon communications. Corporations with established crisis management com-munication strategies are able to communicate and respond promptly at the advent of a crisis. This paper focuses on how to han-dle management crisis effectively from discursive perspective via a case study of the Johnson and Johnson TYLENOL® crisis.

  5. Bernstein's failure to join the space race: his commentary on Tsiolkovskii's "Mechanics in Biology" (1964).

    Science.gov (United States)

    Meijer, O G; Feigenberg, I M

    2000-07-01

    October 4, 1957, the Soviet Union launched Sputnik I into orbit from Tyuratam in Turkistan. An event "with the suddenness and surprise of a Pearl Harbor and of the impact of a Hiroshima atomic explosion" (Stoiko, 1970, p. ix). Nor would this be the only time America lost to the Russians in the space race. November 3 of the same year, Sputnik II carried the dog Laika, the first living being who traveled, and died, in space. In the USA, Senator Lyndon B. Johnson lamented: "Control of space means control of the world" (quoted from Heppenheimer, 1997, p. 126), and attempts were made to speed up Wernher von Braun's launching program (Piszkiewicz, 1995; cf. Von Braun, 1968). Alas, on December 6, when the American rocket began to lift, "it seemed as if the gates of hell had opened up. Brilliant stiletto flames shot out from the side of the rocket near the engine. The vehicle agonizingly hesitated for a moment, quivered again, and in front of our unbelieving, shocked eyes, began to topple" (Halberstam, quoted from Heppenheimer, p. 127). Thus, at the UN, "Soviet delegates asked their American counterparts if the United States might wish to receive foreign aid under Moscow's program of technical assistance to backwards nations" (from Heppenheimer, p. 128). Von Braun finally succeeded with the Explorer I on January 31, 1958, but for the Americans the agonizing wasn't over. On August 21, 1957, the Soviet Union launched an intercontinental ballistic missile (ICBM), this time carrying a dummy, but able to carry a nuclear bomb (Harford, 1997). So, the first ICBMs in the world were aimed at the USA. And then, on the morning of April 12, 1961, Yuri Gagarin shouted "Poyekhali" ("Let's go!") (quoted from Heppenheimer, p. 172), and was launched into space at 9:06 to fly "over America" 51 minutes later. Quite naturally, the Soviet authorities wanted to show that Russia had been ahead all the time, and historical heroes were in strong demand. The Russians didn't have to look far.

  6. TRACES OF JOHNSON IN THE LANGUAGE OF FANNY BURNEY

    Directory of Open Access Journals (Sweden)

    Randy Bax

    2005-06-01

    Full Text Available It has often been claimed that Frances Burney (1752-1840 was influenced linguistically by Samuel Johnson (1709-1784. Sorensen (1969: 390, and others with him, have even called her a "slavish imitator" of the language which Johnson used in his Rambler essays. Although far from simple guesswork, quantitative studies such as Sorensen's remain impressionistic, which makes it difficult to incorporate his (and similar observations in quantitative socio-histoncal linguistic studies of the English language. In the present study, the question whether Burney was indeed a serious imitator of Johnson's usage is answered by looking at the problem from a quantitative rather than qualitative perspective, and addressed within the framework of histoncai social network analysis.

  7. Medicine in Dr Samuel Johnson's Dictionary of the English Language.

    Science.gov (United States)

    Sharma, Om P

    2011-11-01

    When compiling the Dictionary of the English Language, Johnson read and annotated over two hundred thousand passages from innumerable English authors of various disciplines across four centuries. Most of the literary anecdotes came from Shakespeare, Milton, Dryden and Pope. The medical and scientific anecdotes came from 31 scientists, physicians, pharmacologists and surgeons. This reflects Johnson's admiration for science and its benefit to the public. He told Boswell, 'Why Sir, if you have but one book with you upon a journey let it be a book of science. When you read through a book of entertainment, you know it, and it can do no more for you, but a book of science is inexhaustible'.

  8. Canonical extensions of the Johnson homomorphisms to the Torelli groupoid

    DEFF Research Database (Denmark)

    Bene, Alex; Kawazumi, Nariya; Penner, Robert

    2009-01-01

    We prove that every trivalent marked bordered fatgraph comes equipped with a canonical generalized Magnus expansion in the sense of Kawazumi. This Magnus expansion is used to give canonical extensions of the higher Johnson homomorphisms τm , for m 1 , to the Torelli groupoid, and we provide...... a recursive combinatorial formula for tensor representatives of these extensions. In particular, we give an explicit 1-cocycle in the dual fatgraph complex which extends τ2 and thus answer affirmatively a question of Morita and Penner. To illustrate our techniques for calculating higher Johnson homomorphisms...

  9. Johnson County Community College Master Plan, 1990-1991.

    Science.gov (United States)

    Johnson County Community Coll., Overland Park, KS.

    Following a message from the president of the college and a review of the college's mission, this master plan for Johnson County Community College presents a series of six challenges facing the college and the policy directions and responses which the college has prepared to deal with these challenges. Each response is followed by a series of…

  10. Scott Morgan Johnson Middle School: Personalization Leads to Unlimited Success

    Science.gov (United States)

    Principal Leadership, 2013

    2013-01-01

    The well-known lyrics may be "The Eyes of Texas Are Upon You," but at Scott Morgan Johnson Middle School in McKinney, TX, it's definitely the "eye of the tiger" that sets the bar for Tiger PRIDE (perseverance, respect, integrity, determination, and excellence). This article describes how those ideals have been infused…

  11. Energy Systems Integration Partnerships: NREL + Sandia + Johnson Controls

    Energy Technology Data Exchange (ETDEWEB)

    2017-04-05

    NREL and Sandia National Laboratories partnered with Johnson Controls to deploy the company's BlueStream Hybrid Cooling System at ESIF's high-performance computing data center to reduce water consumption seen in evaporative cooling towers.

  12. Johnson et al On Quality Education: A Critique.

    Science.gov (United States)

    Welty, Gordon A.; Wilkes, Ron

    Criticized is a paper by Johnson, Wyer, and Gilbert, "Quality education and integration: an exploratory study", ("Phylon" XXVIII, 1967, pp. 221-229). This study stated that (1) there may be more racial conflict in integrated schools and therefore educational quality may be lower than in less integrated schools, and (2) social class orientation of…

  13. Dubin-Johnson syndrome coinciding with colon cancer and atherosclerosis.

    Science.gov (United States)

    Sticova, Eva; Elleder, Milan; Hulkova, Helena; Luksan, Ondrej; Sauer, Martin; Wunschova-Moudra, Irena; Novotny, Jan; Jirsa, Milan

    2013-02-14

    Hyperbilirubinemia has been presumed to prevent the process of atherogenesis and cancerogenesis mainly by decreasing oxidative stress. Dubin-Johnson syndrome is a rare, autosomal recessive, inherited disorder characterized by biphasic, predominantly conjugated hyperbilirubinemia with no progression to end-stage liver disease. The molecular basis in Dubin-Johnson syndrome is absence or deficiency of human canalicular multispecific organic anion transporter MRP2/cMOAT caused by homozygous or compound heterozygous mutation(s) in ABCC2 located on chromosome 10q24. Clinical onset of the syndrome is most often seen in the late teens or early adulthood. In this report, we describe a case of previously unrecognized Dubin-Johnson syndrome caused by two novel pathogenic mutations (c.2360_2366delCCCTGTC and c.3258+1G>A), coinciding with cholestatic liver disease in an 82-year-old male patient. The patient, suffering from advanced atherosclerosis with serious involvement of coronary arteries, developed colorectal cancer with nodal metastases. The subsequent findings do not support the protective role of Dubin-Johnson type hyperbilirubinemia.

  14. Digital bedrock geologic map of the Johnson quadrangle, Vermont

    Data.gov (United States)

    Vermont Center for Geographic Information — Digital Data from VG98-2 Thompson, PJ�and Thompson, TB, 1998,�Digital bedrock geologic map of the Johnson quadrangle, Vermont: VGS Open-File Report VG98-2, 2 plates,...

  15. Phenobarbital induced Stevens–Johnson syndrome in a child

    OpenAIRE

    Sumit Gaur; Rupali Agnihotri

    2012-01-01

    Phenobarbital, an antiepileptic agent has numerous adverse reactions including Stevens- Johnson syndrome (SJS), a rare medical emergency. A 12-year-old male epileptic child with phenobarbital-induced SJS was referred for the management of severe pain in relation to extensively decayed molar tooth and oral mucosal ulcerations. The patient was managed by withdrawal of phenobarbital and palliative treatment of the lesions.

  16. Phenobarbital induced Stevens-Johnson syndrome in a child.

    Science.gov (United States)

    Gaur, Sumit; Agnihotri, Rupali

    2012-01-01

    Phenobarbital, an antiepileptic agent has numerous adverse reactions including Stevens- Johnson syndrome (SJS), a rare medical emergency. A 12-year-old male epileptic child with phenobarbital-induced SJS was referred for the management of severe pain in relation to extensively decayed molar tooth and oral mucosal ulcerations. The patient was managed by withdrawal of phenobarbital and palliative treatment of the lesions.

  17. Derivation of Johnson-Cousins Magnitudes from DSLR Camera Observations

    Science.gov (United States)

    Park, Woojin; Pak, Soojong; Shim, Hyunjin; Le, Huynh Anh N.; Im, Myungshin; Chang, Seunghyuk; Yu, Joonkyu

    2016-01-01

    The RGB Bayer filter system consists of a mosaic of R, G, and B filters on the grid of the photo sensors which typical commercial DSLR (Digital Single Lens Reflex) cameras and CCD cameras are equipped with. Lot of unique astronomical data obtained using an RGB Bayer filter system are available, including transient objects, e.g. supernovae, variable stars, and solar system bodies. The utilization of such data in scientific research requires that reliable photometric transformation methods are available between the systems. In this work, we develop a series of equations to convert the observed magnitudes in the RGB Bayer filter system (RB, GB, and BB) into the Johnson-Cousins BVR filter system (BJ, VJ, and RC). The new transformation equations derive the calculated magnitudes in the Johnson-Cousins filters (BJcal, VJcal, and RCcal) as functions of RGB magnitudes and colors. The mean differences between the transformed magnitudes and original magnitudes, i.e. the residuals, are (BJ - BJcal) = 0.064 mag, (VJ - VJcal) = 0.041 mag, and (RC - RCcal) = 0.039 mag. The calculated Johnson-Cousins magnitudes from the transformation equations show a good linear correlation with the observed Johnson-Cousins magnitudes.

  18. Guy B. Johnson Revisited: Another Look at Gullah.

    Science.gov (United States)

    Baird, Keith E.

    1980-01-01

    Reviews the debate between Herskovits, Turner, and Johnson on Africanisms in Gullah. Suggests that Whinnom's approach, which considers pidgins and creoles under the rubric of "linguistic hybridization," is a more appropriate model with which to view Gullah, making irrelevant the question of whether it is an African or European language. (GC)

  19. Amplifiers Module Prototype for the Johnson Noise Thermometry System

    Energy Technology Data Exchange (ETDEWEB)

    Britton Jr, Charles L [ORNL; Bull, Nora D [ORNL; Roberts, Michael [ORNL

    2013-06-01

    This document is intended to summarize the development and testing of the amplifier module portion of the Johnson Noise Thermometry (JNT) system developed at ORNL. The proposed system has been presented in an earlier report [1]. A more extensive project background including the project rationale is available in the initial project report [2].

  20. Teorija Dorothy Johnson in zdravstvena nega nosečnice: Dorothy Johnson's theory and nursing care of a pregnant woman:

    OpenAIRE

    Urh, Irma

    1998-01-01

    The article deals with the role of nursing care during antenatal period. Basedon an behavioural model, activities of a nurse intendend to help a pregnant woman and her partner from conception to birth of their child. The article deals with the process of nursing care based on the ideals of Dorothy Johnson's theory for planning and performing nursing care for a particular pregnant women.

  1. Net coal thickness in the Johnson-107 coal zone, South Carbon coalfield, Wyoming (sccat)

    Data.gov (United States)

    U.S. Geological Survey, Department of the Interior — This ArcView shapefile contains a representation of the Johnson-107 coal zone net coal thickness. The Johnson-107 coal zone is in the South Carbon coalfield in the...

  2. Developing flood-inundation maps for Johnson Creek, Portland, Oregon

    Science.gov (United States)

    Stonewall, Adam J.; Beal, Benjamin A.

    2017-04-14

    Digital flood-inundation maps were created for a 12.9‑mile reach of Johnson Creek by the U.S. Geological Survey (USGS). The flood-inundation maps depict estimates of water depth and areal extent of flooding from the mouth of Johnson Creek to just upstream of Southeast 174th Avenue in Portland, Oregon. Each flood-inundation map is based on a specific water level and associated streamflow at the USGS streamgage, Johnson Creek at Sycamore, Oregon (14211500), which is located near the upstream boundary of the maps. The maps produced by the USGS, and the forecasted flood hydrographs produced by National Weather Service River Forecast Center can be accessed through the USGS Flood Inundation Mapper Web site (http://wimcloud.usgs.gov/apps/FIM/FloodInundationMapper.html).Water-surface elevations were computed for Johnson Creek using a combined one-dimensional and two‑dimensional unsteady hydraulic flow model. The model was calibrated using data collected from the flood of December 2015 (including the calculated streamflows at two USGS streamgages on Johnson Creek) and validated with data from the flood of January 2009. Results were typically within 0.6 foot (ft) of recorded or measured water-surface elevations from the December 2015 flood, and within 0.8 ft from the January 2009 flood. Output from the hydraulic model was used to create eight flood inundation maps ranging in stage from 9 to 16 ft. Boundary condition hydrographs were identical in shape to those from the December 2015 flood event, but were scaled up or down to produce the amount of streamflow corresponding to a specific water-surface elevation at the Sycamore streamgage (14211500). Sensitivity analyses using other hydrograph shapes, and a version of the model in which the peak flow is maintained for an extended period of time, showed minimal variation, except for overbank areas near the Foster Floodplain Natural Area.Simulated water-surface profiles were combined with light detection and ranging (lidar

  3. Fall 2015 NASA Internship, and Space Radiation Health Project

    Science.gov (United States)

    Patience, Luke

    2015-01-01

    This fall, I was fortunate enough to have been able to participate in an internship at NASA's Lyndon B. Johnson Space Center. I was placed into the Human Health & Performance Directorate, where I was specifically tasked to work with Dr. Zarana Patel, researching the impacts of cosmic level radiation on human cells. Using different laboratory techniques, we were able to examine the cells to see if any damage had been done due to radiation exposure, and if so, how much damage was done. Cell culture samples were exposed at different doses, and fixed at different time points so that we could accumulate a large pool of quantifiable data. After examining quantifiable results relative to the impacts of space radiation on the human body at the cellular and chromosomal level, researchers can defer to different areas of the space program that have to do with astronaut safety, and research and development (extravehicular mobility unit construction, vehicle design and construction, etc.). This experience has been very eye-opening, and I was able to learn quite a bit. I learned some new laboratory techniques, and I did my best to try and learn new ways to balance such a hectic work and school schedule. I also learned some very intimate thing about working at NASA; I learned that far more people want to watch you succeed, rather than watch you fail, and I also learned that this is a place that is alive with innovators and explorers - people who have a sole purpose of exploring space for the betterment of humanity, and not for any other reason. It's truly inspiring. All of these experiences during my internship have impacted me in a really profound way, so much that my educational and career goals are completely different than when I started. I started out as a biotechnology major, and I discovered recently toward the end of the internship, that I don't want to work in a lab, nor was I as enthralled by biological life sciences as a believed myself to be. Taking that all into

  4. NPSNET: Physically Based, Autonomous, Naval Surface Agents

    Science.gov (United States)

    1993-09-01

    Branch, NASA - Lyndon B. Johnson Space Center, Houston, TX, January 1991. [Hall 88] Halliday , David, Resnick , Robert, Fundamentals of Physics, Third...Prindle, Weber & Schmidt, Boston, MA, 1979. [Walk90] Walker , Terri C., Miller, Richard K., Expert Systems Handbook, The Fairmont Press, Inc., Lilburn, GA

  5. The 1989 JSC bibliography of scientific and technical papers

    Science.gov (United States)

    Hutchins, Nancy (Compiler)

    1991-01-01

    This document is a compilation of Lyndon B. Johnson Space Center contributions to the scientific and technical literature in aerospace and life sciences made during calendar year 1989. Citations include NASA formal series reports, journal articles, conference and symposium presentations, papers published in proceedings or other collective works, and seminar and workshop results.

  6. Quality of Streams in Johnson County, Kansas, 2002-07

    Science.gov (United States)

    Rasmussen, Teresa J.

    2008-01-01

    Water quality of streams in Johnson County, Kansas was evaluated from October 2002 through December 2007 in a cooperative study between the U.S. Geological Survey and the Johnson County Stormwater Management Program. Water quality at 42 stream sites, representing urban and rural basins, was characterized by evaluating benthic macroinvertebrates, water (discrete and continuous data), and/or streambed sediment. Point and nonpoint sources and transport were described for water-quality constituents including suspended sediment, dissolved solids and major ions, nutrients (nitrogen and phosphorus), indicator bacteria, pesticides, and organic wastewater and pharmaceutical compounds. The information obtained from this study is being used by city and county officials to develop effective management plans for protecting and improving stream quality. This fact sheet summarizes important results from three comprehensive reports published as part of the study and available on the World Wide Web at http://ks.water.usgs.gov/Kansas/studies/qw/joco/ .

  7. Dubin-Johnson syndrome presenting after acute viral hepatitis.

    Science.gov (United States)

    Lahmi, Farhad; Roshani, Mohammad; Khosravi, Katayoun; Azizi, Morteza; Mohebbi, Seyed Reza; Zali, Mohammad Reza

    2011-01-01

    Elevated serum level of bilirubin is a common manifestation which is occurred in several diseases. Hyperbilirubinemia can manifest either conjugated or unconjugated. Conjugated or direct hyperbilirubinemia usually are caused by hepatocellular diseases or cholestatic liver diseases. Merely conjugated hyperbilirubinemia is the main manifestation of two congenital syndromes, including Dubin-Johnson and rotor syndrome; however it can be seen in some patients with recurrent benign intrahepatic cholestasis. This article reports a patient with Dubin- Johuson syndrome as a benign and rare condition.

  8. [Prediction of fetal weight by the Johnson-Toshach metod].

    Science.gov (United States)

    Valenzuela Tinoco, E; Puente González, H; de Dios Maldonado Alvarado, J

    1998-10-01

    Evaluation of Johnson and Toshach method to predict fetal weight. 200 patients with terminal pregnancy. The clinical method of Johnson and Toshach was used to calculate the fetal weight and it was compared with the immediate neonatal weight. Results were analyzed by the t Student test for paired data, with a certainty interval of 95%. The technique was accepted as useful in the cases without significative differences. 150 cases (75%) were in labor. The gestational ages were 38 weeks in 62 case; 39 weeks, 56 case; 40 weeks, 60 cases; 41 weeks, 22 cases. The average fetal weight vs neonatal weight was: At 38 weeks, 3,164 g (DS 289 g) vs 3,218 g (DS 364 g) (p > 0.05); 39 weeks 3,175 g (DS 301 g) vs 3,326 g (DS 391 g) (p 0.05). From the cases with significative difference, 85% had labor. The Johnson and Toshach method is useful to predict the fetal weight in patients with terminal pregnancy and no labor.

  9. Johnson Noise Thermometry for Advanced Small Modular Reactors

    Energy Technology Data Exchange (ETDEWEB)

    Britton Jr, Charles L [ORNL; Roberts, Michael [ORNL; Bull, Nora D [ORNL; Holcomb, David Eugene [ORNL; Wood, Richard Thomas [ORNL

    2012-10-01

    Temperature is a key process variable at any nuclear power plant (NPP). The harsh reactor environment causes all sensor properties to drift over time. At the higher temperatures of advanced NPPs the drift occurs more rapidly. The allowable reactor operating temperature must be reduced by the amount of the potential measurement error to assure adequate margin to material damage. Johnson noise is a fundamental expression of temperature and as such is immune to drift in a sensor s physical condition. In and near core, only Johnson noise thermometry (JNT) and radiation pyrometry offer the possibility for long-term, high-accuracy temperature measurement due to their fundamental natures. Small, Modular Reactors (SMRs) place a higher value on long-term stability in their temperature measurements in that they produce less power per reactor core and thus cannot afford as much instrument recalibration labor as their larger brethren. The purpose of this project is to develop and demonstrate a drift free Johnson noise-based thermometer suitable for deployment near core in advanced SMR plants.

  10. Johnson Noise Thermometry for Advanced Small Modular Reactors

    Energy Technology Data Exchange (ETDEWEB)

    Britton, C.L.,Jr.; Roberts, M.; Bull, N.D.; Holcomb, D.E.; Wood, R.T.

    2012-09-15

    Temperature is a key process variable at any nuclear power plant (NPP). The harsh reactor environment causes all sensor properties to drift over time. At the higher temperatures of advanced NPPs the drift occurs more rapidly. The allowable reactor operating temperature must be reduced by the amount of the potential measurement error to assure adequate margin to material damage. Johnson noise is a fundamental expression of temperature and as such is immune to drift in a sensor’s physical condition. In and near the core, only Johnson noise thermometry (JNT) and radiation pyrometry offer the possibility for long-term, high-accuracy temperature measurement due to their fundamental natures. Small Modular Reactors (SMRs) place a higher value on long-term stability in their temperature measurements in that they produce less power per reactor core and thus cannot afford as much instrument recalibration labor as their larger brethren. The purpose of the current ORNL-led project, conducted under the Instrumentation, Controls, and Human-Machine Interface (ICHMI) research pathway of the U.S. Department of Energy (DOE) Advanced SMR Research and Development (R&D) program, is to develop and demonstrate a drift free Johnson noise-based thermometer suitable for deployment near core in advanced SMR plants.

  11. Severe jaundice due to coexistence of Dubin-Johnson syndrome and hereditary spherocytosis: a case report.

    Science.gov (United States)

    Korkmaz, Uğur; Duman, Ali Erkan; Oğütmen Koç, Deniz; Gürbüz, Yeşim; Dındar, Gökhan; Ensaroğlu, Fatih; Sener, Selçuk Yusuf; Sentürk, Omer; Hülagü, Sadettin

    2011-08-01

    Dubin-Johnson syndrome is a chronic, benign, intermittent jaundice, mostly of conjugated hyperbilirubinemia. The level of bilirubin is not expected to be more than 20 mg/dl in this syndrome. In this article, we report a patient who was evaluated for hyperbilirubinemia and liver function test abnormalities and diagnosed with Dubin-Johnson syndrome coexisting with hereditary spherocytosis. We suggest that other diseases should be investigated if patients with Dubin-Johnson syndrome present with severe hyperbilirubinemia. Dubin-Johnson syndrome accompanied by hemolytic diseases might also have high coproporphyrin levels (as in Rotor's syndrome) than expected in pure Dubin-Johnson syndrome.

  12. [Diagnostic problems of Stevens-Johnson syndrome. A case report].

    Science.gov (United States)

    Djordjević, N; Sarović, N; Pasić, S; Dujić, A

    1994-01-01

    Stivens-Johnson Syndrome is a rare, severe, bullose form of erythema multiforme of unknown etiology. The role of immunological factors in its pathogenesis elucidates. A patients (Sh.V.), nine years of age, was admitted for reccurent streptococcal infections with skin and mucose membrane lesions. In June 1990 streptococcal pharyngitis, fever (38.8-39,9 degrees C) were registered. Penicillin was given. Next day bullous lesions on lips, left ear, trunk and lower extremities and vesiculose lesions with a wide, erythematose base ("iris") and then conjuctivitis were registered. Laboratory tests: SR70.; Leu - 11,0; anti-herpes Ab IgG 1/64, IgM 1/8. Stevens-Johnson was diagnosed. There was a recidivation two years after - oral lesions followed by necrosis and bleeding, after half a year a second recidivation with spreading of bullous and vesiculous lesions to penis gland with prepuce of the penis. Last recidivation in February 1993. Anamnesis: Viral meningitis in 1988. mother suffers from herpes labialis. Peripheral blood immunophenotiping lymphocite extremly indicated decreasing values of B Ly, NK and IL-2R+ cells. Bacteriological tests showed an increase of anti-Chlamidia Ab titer (IgG 1/128, IgA and IgM +). In virological testing there was no increase of titer of Abs against viral antigens (Herpes simplex virus, Varicella-Zoster virus, Citomegalovirus, Adenovirus). We conclude that Stevens-Johnson Sy to be diagnosed by characteristic clinical features, aspecialy by frequent reccurences. Immunological testing during the last recidivation showed that parameters of humoral immune reactivity were within normal ranges while revealed defects of cellular immune reactivity cannot elucidate the ethiopathogenesis of this disease.

  13. Stevens-Johnson syndrome complicating adalimumab therapy in Crohn's disease

    Institute of Scientific and Technical Information of China (English)

    Muna Salama; Ian Craig Lawrance

    2009-01-01

    The anti-tumor necrosis factor (TNF)a medications demonstrate efficacy in the induction of remission and its maintenance in numerous chronic inflammatory conditions. With the increasing number of patients receiving anti-TNFa agents, however, less common adverse reactions will occur. Cutaneous eruptions complicating treatment with an anti-TNFa agent are not uncommon, occurring in around 20% of patients. Adalimumab, a fully humanized antibody against TNFa, may be expected to cause minimal immune-mediated skin reactions compared to the chimeric monoclonal antibody, infliximab. We, however, report a case of Stevens-Johnson syndrome that required hospitalization and cessation of adalimumab in a patient with Crohn's disease (CD). In this case report, a 29-year-old male with colonic and perianal CD with associated erythema nodosum and large joint arthropathy developed severe mucositis, peripheral rash and desquamation, fevers and respiratory symptoms concomitant with a second dose of 40 mg adalimumab after a 2 mo break from adalimumab therapy. Skin biopsies of the abdominal wall confirmed erythema multiforme and the patient was on no other drugs and infective etiologies were excluded. The patient responded rapidly to IV hydrocortisone and was able to be commenced on infliximab without recurrence of the Stevens-Johnson syndrome. Desquamating skin reactions have now been described in three of the TNFa antagonists (infliximab, etanercept and adalimumab). These reactions can be serious and prescribers need to be aware of the potential mucocutaneous side effects of these agents, especially as Stevens-Johnson syndrome is associated with significant morbidity and mortality.

  14. The Masters and Johnson treatment program for dissatisfied homosexual men.

    Science.gov (United States)

    Schwartz, M F; Masters, W H

    1984-02-01

    Certain individuals who want to change their homosexual preference can be helped by a short-term intensive intervention adapted from the Masters and Johnson model for treating heterosexual disorders. Pretreatment counseling aims at improving the patient's dating, sexual, and intimacy skills; creative problem solving; and stress management. Then for 2 weeks the patient and an opposite-sex partner, living in social isolation, meet daily with a therapy team to address fears and anxieties about intimacy as they arise. The directive psychotherapy format alternates between confrontation of maladaptive belief systems and patterns of relating and support for finding new ways of coping that foster a positive self-image.

  15. On the Connectedness and Diameter of a Geometric Johnson Graph

    CERN Document Server

    Bautista-Santiago, Crevel; Fabila-Monroy, Ruy; Flores-Peñaloza, David; González-Aguilar, Hernán; Lara, Dolores; Sarmiento, Eliseo; Urrutia, Jorge

    2012-01-01

    Let $P$ be a set of $n$ points in general position in the plane. A subset $I$ of $P$ is called an \\emph{island} if there exists a convex set $C$ such that $I = P \\cap C$. In this paper we define the \\emph{generalized island Johnson graph} of $P$ as the graph whose vertex consists of all islands of $P$ of cardinality $k$, two of which are adjacent if their intersection consists of exactly $l$ elements. We show that for large enough values of $n$, this graph is connected, and give upper and lower bounds on its diameter.

  16. Low magnetic Johnson noise electric field plates for precision measurement

    CERN Document Server

    Rabey, I M; Hinds, E A; Sauer, B E

    2016-01-01

    We describe a parallel pair of high voltage electric field plates designed and constructed to minimise magnetic Johnson noise. They are formed by laminating glass substrates with commercially available polyimide (Kapton) tape, covered with a thin gold film. Tested in vacuum, the outgassing rate is less than $5\\times10^{-5}$ mbar.l/s. The plates have been operated at electric fields up to 8.3 kV/cm, when the leakage current is at most a few hundred pA. The design is discussed in the context of a molecular spin precession experiment to measure the permanent electric dipole moment of the electron.

  17. Zeons, Permanents, the Johnson Scheme, and Generalized Derangements

    Directory of Open Access Journals (Sweden)

    Philip Feinsilver

    2011-01-01

    Full Text Available Starting with the zero-square “zeon algebra,” the connection with permanents is shown. Permanents of submatrices of a linear combination of the identity matrix and all-ones matrix lead to moment polynomials with respect to the exponential distribution. A permanent trace formula analogous to MacMahon's master theorem is presented and applied. Connections with permutation groups acting on sets and the Johnson association scheme arise. The families of numbers appearing as matrix entries turn out to be related to interesting variations on derangements. These generalized derangements are considered in detail as an illustration of the theory.

  18. Applications of computer modeling at Wrightson, Johnson, Haddon & Williams, Inc

    Science.gov (United States)

    Johnson, James A.; Seep, Benjamin C.

    2002-05-01

    Computer modeling has become useful as an investigative tool and as a client communication and explanation tool in the field of acoustical consulting. A variety of in-house developed and commercially available applications is in constant use at the firm of Wrightson, Johnson, Haddon & Williams. Examples likely to be demonstrated (depending on time) include use of digital filtering for building exterior noise reduction comparisons, a shell isolation rating (SIR) model, simple sound barrier programs, an HVAC spreadsheet, a visual sightline modeling tool, specular sound reflections in a semicircular arc, and some uses of CATT-acoustic auralizations.

  19. Spaces

    Directory of Open Access Journals (Sweden)

    Maziar Nekovee

    2010-01-01

    Full Text Available Cognitive radio is being intensively researched as the enabling technology for license-exempt access to the so-called TV White Spaces (TVWS, large portions of spectrum in the UHF/VHF bands which become available on a geographical basis after digital switchover. Both in the US, and more recently, in the UK the regulators have given conditional endorsement to this new mode of access. This paper reviews the state-of-the-art in technology, regulation, and standardisation of cognitive access to TVWS. It examines the spectrum opportunity and commercial use cases associated with this form of secondary access.

  20. Dialéctica material Donald Judd y Philip Johnson

    Directory of Open Access Journals (Sweden)

    María Teresa Muñoz

    2016-05-01

    Full Text Available Resumen El objetivo de este escrito es examinar cómo se plantea una cierta dialéctica material en el conjunto llamado la Mansana de Chinati, construido por el escultor Donald Judd en la ciudad de Marfa, Texas, a partir del año 1974, comparándolo con las dos viviendas que realiza el arquitecto Philip Johnson en su propiedad de New Canaan, Connecticut, en torno al año 1950. Tanto en New Canaan como en la Mansana de Chinati existe una  oposición, una dialéctica, entre una arquitectura industrial y otra artesana, tanto Philip Johnson como Donald Judd consideran que existe una arquitectura principal, la realizada con materiales y técnicas industriales, y otra subalterna o de servicio, la construida con piezas de arcilla y técnicas artesanales. Esta segunda arquitectura encarnará las cualidades asociadas con la pobreza, la abundancia material y la clausura espacial. Sin  embargo, esta exhibición de pobreza no tiene como fin los propios edificios domésticos construidos artesanalmente, ya sea con adobe o con ladrillo, sino que estará al servicio de esa otra arquitectura, construida con técnicas industriales, a la que se exige renunciar a la comodidad y el confort o cuando menos ocultarlos bajo la forma de una radical austeridad.

  1. Paradise and Politics in the Music of Blind Willie Johnson

    Directory of Open Access Journals (Sweden)

    Owen Coggins

    2012-05-01

    Full Text Available I investigate the politics of paradises in the 1920s African-American gospel blues of Blind Willie Johnson. His recordings are apocalyptic vignettes which juxtapose and conflate paradises, using many different voices. I describe the theological and political paradises in Johnson’s songs: the Old Testament journey to Canaan; the post-death heaven in the New Testament; Christ’s kingdom on earth in Revelation; freedom in Northern cities or Canada; and a utopian dream of political emancipation of African-Americans and transformation of society in the South. I outline the various voices present in Johnson’s recordings: vocal styles; accompanying singers; the guitar; grammatical, textual and lexical voices; and the silent voices of technology and time. I suggest traces of a subtle political activism in these voices and paradises, and explore uses of these voices in linking paradises, arguing that the complex transitions enhance the force of signification and frustrate attempts to finalise meanings. Many interpretations of Johnson’s recordings, however, seek to determine final meaning, and I discuss the limitations of such attempts, limitations which not only underestimate the richness of the recordings but deny Johnson any political awareness or agency. In cautioning against this kind of project, I call for a hearing open to plural interpretations, and suggest political potential not only in coded messages, but in radical indeterminacy itself.

  2. The Johnson-Lindenstrauss Transform Itself Preserves Differential Privacy

    CERN Document Server

    Blocki, Jeremiah; Datta, Anupam; Sheffet, Or

    2012-01-01

    This paper proves that an "old dog", namely -- the classical Johnson-Lindenstrauss transform, "performs new tricks" -- it gives a novel way of preserving differential privacy. We show that if we take two databases, $D$ and $D'$, such that (i) $D'-D$ is a rank-1 matrix of bounded norm and (ii) all singular values of $D$ and $D'$ are sufficiently large, then multiplying either $D$ or $D'$ with a vector of iid normal Gaussians yields two statistically close distributions in the sense of differential privacy. Furthermore, a small, deterministic and \\emph{public} alteration of the input is enough to assert that all singular values of $D$ are large. We apply the Johnson-Lindenstrauss transform to the task of approximating cut-queries: the number of edges crossing a $(S,\\bar S)$-cut in a graph. We show that the JL transform allows us to \\emph{publish a sanitized graph} that preserves edge differential privacy (where two graphs are neighbors if they differ on a single edge) while adding only $O(|S|/\\epsilon)$ random ...

  3. James Weldon Johnson and the Speech Lab Recordings

    Directory of Open Access Journals (Sweden)

    Chris Mustazza

    2016-03-01

    Full Text Available On December 24, 1935, James Weldon Johnson read thirteen of his poems at Columbia University, in a recording session engineered by Columbia Professor of Speech George W. Hibbitt and Barnard colleague Professor W. Cabell Greet, pioneers in the field that became sociolinguistics. Interested in American dialects, Greet and Hibbitt used early sound recording technologies to preserve dialect samples. In the same lab where they recorded T.S. Eliot, Gertrude Stein, and others, James Weldon Johnson read a selection of poems that included several from his seminal collection God’s Trombones and some dialect poems. Mustazza has digitized these and made them publicly available in the PennSound archive. In this essay, Mustazza contextualizes the collection, considering the recordings as sonic inscriptions alongside their textual manifestations. He argues that the collection must be heard within the frames of its production conditions—especially its recording in a speech lab—and that the sound recordings are essential elements in an hermeneutic analysis of the poems. He reasons that the poems’ original topics are reframed and refocused when historicized and contextualized within the frame of The Speech Lab Recordings.

  4. Park Land and Nature Preserves, Park facilities are maintained by Johnson County Parks and Recreation Department and includes all parks with in Johnson County, Published in Not Provided, Johnson County Government.

    Data.gov (United States)

    NSGIC Local Govt | GIS Inventory — Park Land and Nature Preserves dataset current as of unknown. Park facilities are maintained by Johnson County Parks and Recreation Department and includes all parks...

  5. NASA Space Human Factors Program

    Science.gov (United States)

    1992-01-01

    This booklet briefly and succinctly treats 23 topics of particular interest to the NASA Space Human Factors Program. Most articles are by different authors who are mainly NASA Johnson or NASA Ames personnel. Representative topics covered include mental workload and performance in space, light effects on Circadian rhythms, human sleep, human reasoning, microgravity effects and automation and crew performance.

  6. [A case of sustained cholestasis caused by acute A viral hepatitis in Dubin-Johnson syndrome].

    Science.gov (United States)

    Ra, Sang Ho; Sung, Se Yong; Jung, Ho Yeon; Cha, Jae Hwang; Baik, Soon Koo; Cho, Mee Yon; Kim, Moon Young

    2012-04-01

    Dubin-Johnson syndrome is a rare clinical entity. It shows intermittent symptoms such as chronic or intermittent jaundice, abdominal pain, weakness, nausea, vomiting, anorexia and diarrhea. Symptoms are precipitated or aggravated by pregnancy, alcoholism, surgical procedures and intercurrent disease. Chronic idiopathic jaundice is typical of Dubin-Johnson syndrome and its prognosis is good. We describe a case of prolonged cholestasis for more than 10 months caused by acute A viral hepatitis in a patient with Dubin-Johnson syndrome. It is a first report of cholestasis complicated by acute A viral hepatitis in a patient with Dubin-Johnson syndrome.

  7. Stevens-Johnson syndrome associated with antimicrobial agent

    Directory of Open Access Journals (Sweden)

    Ivo Cavalcanti Pita Neto

    2008-01-01

    Full Text Available Among the severe reactions to medications, immune-mediated Mucocutaneous Disorders are widely represented. Steven-Johnson’s syndrome, or great multiform erythema, appears as a systemic disturbance, involving the skin and mucous membranes, and is related to several factors, such as, viral or bacterial infections and particularly the administration of medicines, in general painkillers and antibiotics. The objective of this article is report the onset of ulcerative vesicle –blister lesions in the regions of the lips, gums, tongue and genital mucosa membrane in a 26 year-old patient, a leukoderm man, being treated with sulfamethoxazole trimethoprim for a respiratory infection, after being diagnosed as having the Steven-Johnson syndrome. SSJ1 558187121279.

  8. Aceclofenac induced Stevens-Johnson/toxic epidermal necrolysis overlap syndrome

    Directory of Open Access Journals (Sweden)

    Kaderthambi Hajamohideen Nooru Ameen

    2013-01-01

    Full Text Available The purpose of this paper is to report a rare occurrence of Stevens-Johnson/Toxic epidermal necrolysis (SJS/TEN overlap syndrome after the use of aceclofenac. A 38 year old healthy adult male presented with rapidly evolving rash over face and upper body with ulceration of buccal mucosa and breathlessness after taking aceclofenac tablet. Naranjo score for this adverse drug event was six, thereby making it a probable adverse drug reaction. Despite aggressive fluid resuscitation and use of antihistamines and systemic steroids, patient′s health rapidly worsened and died within six hours of presentation. Aceclofenac induced SJS/TEN overlap is an extremely rare clinical association previously reported only once in medical literature. To the best of our knowledge, this is the first case report of such an association in the Indian population. We are presenting this case to highlight the serious adverse reactions possible from a routinely prescribed drug.

  9. A case of Stevens-Johnson syndrome due to rifampicin

    Directory of Open Access Journals (Sweden)

    Vandana A. Badar

    2014-02-01

    Full Text Available A 25 year old female known case of category II pulmonary Tuberculosis was on anti-coch’s treatment in the FDC of rifampicin, isoniazid, pyrazinamide, ethambutol and Streptomycin. Fifteen days after the commencement of Cat II anti TB treatment she developed diffuse erythematous rash on face, trunk and both extremities which turned into blisters. There were ulcers on oral and genital cavity. A diagnosis of Stevens Johnson’s syndrome was made. The patient had a history of cat I pulmonary TB and treated for 8 months and at the end of 8th month she was sputum smear negative. Four months later she had a relapse of sputum smear positive for pulmonary TB. She responded to the stoppage of drugs and oral/inj. Corticosteroids, antihistaminics and antibiotics. [Int J Basic Clin Pharmacol 2014; 3(1.000: 239-241

  10. Stevens-Johnson syndrome and abuse of anabolic steroids

    Science.gov (United States)

    2017-01-01

    Stevens-Johnson syndrome (SJS) is characterized by mucocutaneous tenderness and typical hemorrhagic erosions, erythema and epidermal detachment presenting as blisters and areas of denuded skin. SJS is often observed after drug use as well as after bacterial or viral infections. Several drugs are at high risk of inducing SJS, but there are no cases in the English literature regarding anabolic steroid use triggering SJS. In our paper, we describe a case in which use of anabolic androgenic steroids (AAS) was associated with SJS. The patient participated in competitive body-building and regularly took variable doses of AAS. Initial symptoms (headache, weakness, pharyngodynia, and fever) were ignored. After a week he presented to the Emergency Department with a burning sensation on the mouth, lips, and eyes. Painful, erythematous, maculopapular, and vesicular lesions appeared all over the body, including on the genitals. During hospitalization, he also developed a cardiac complication. The patient had not taken any drugs except AAS.

  11. Revisiting Johnson and Jackson boundary conditions for granular flows

    Energy Technology Data Exchange (ETDEWEB)

    Li, Tingwen; Benyahia, Sofiane

    2012-07-01

    In this article, we revisit Johnson and Jackson boundary conditions for granular flows. The oblique collision between a particle and a flat wall is analyzed by adopting the classic rigid-body theory and a more realistic semianalytical model. Based on the kinetic granular theory, the input parameter for the partial-slip boundary conditions, specularity coefficient, which is not measurable in experiments, is then interpreted as a function of the particle-wall restitution coefficient, the frictional coefficient, and the normalized slip velocity at the wall. An analytical expression for the specularity coefficient is suggested for a flat, frictional surface with a low frictional coefficient. The procedure for determining the specularity coefficient for a more general problem is outlined, and a working approximation is provided.

  12. Paracetamol induced Steven-Johnson syndrome: A rare case report

    Directory of Open Access Journals (Sweden)

    Rajan Rajput

    2015-01-01

    Full Text Available In the contemporary era, use of drugs is the dominant paradigm of health care. The most quotidian drug used for fever and pain is paracetamol. Although adverse reactions to paracetamol in India are rare, at times they can cause life-threatening situations. Stevens-Johnson syndrome (SJS is one such potentially lethal adverse drug reaction. The most reported cases of analgesic-induced SJS were due to oxicams or propionic acid derivatives. There are very few detailed reports of SJS due to the use of paracetamol. We report a case of SJS, which occurred due to the use of paracetamol. The clinical features of this condition and multidisciplinary management of the patient are described in brief.

  13. Soviet Space Program Handbook.

    Science.gov (United States)

    1988-04-01

    in advance and some events were even broadcast live. Immediately following the first success- ful launch of their new Energia space launch vehicle in...early 1988. Just as a handbook written a couple of years ago would need updating with Mir, Energia , and the SL-16, this handbook will one day need up...1986. Johnson, Nicholas L. The Soviet Year in Space 1983. Colorado Springs, CO: Teledyne Brown Engineering, 1984. Lawton, A. " Energia - Soviet Super

  14. 78 FR 46373 - Manufacturer of Controlled Substances; Notice of Registration; Johnson Matthey Pharmaceutical...

    Science.gov (United States)

    2013-07-31

    ... Pharmaceutical Materials, Inc. By Notice dated March 20, 2013, and published in the Federal Register on March 28, 2013, 78 FR 19017, Johnson Matthey Pharmaceutical Materials, Inc., Pharmaceutical Services, 25 Patton... determined that the registration of Johnson Matthey Pharmaceutical Materials, Inc., to manufacture the...

  15. 50 CFR 80.25 - Multiyear financing under the Dingell-Johnson Sport Fish Restoration Program.

    Science.gov (United States)

    2010-10-01

    ...-Johnson Sport Fish Restoration Program. 80.25 Section 80.25 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR (CONTINUED) FINANCIAL ASSISTANCE-WILDLIFE SPORT FISH RESTORATION PROGRAM ADMINISTRATIVE REQUIREMENTS, PITTMAN-ROBERTSON WILDLIFE RESTORATION AND DINGELL-JOHNSON...

  16. Quality of streams in Johnson County, Kansas, 2002--10

    Science.gov (United States)

    Rasmussen, Teresa J.; Stone, Mandy S.; Poulton, Barry C.; Graham, Jennifer L.

    2012-01-01

    Stream quality in Johnson County, northeastern Kansas, was assessed on the basis of land use, hydrology, stream-water and streambed-sediment chemistry, riparian and in-stream habitat, and periphyton and macroinvertebrate community data collected from 22 sites during 2002 through 2010. Stream conditions at the end of the study period are evaluated and compared to previous years, stream biological communities and physical and chemical conditions are characterized, streams are described relative to Kansas Department of Health and Environment impairment categories and water-quality standards, and environmental factors that most strongly correlate with biological stream quality are evaluated. The information is useful for improving water-quality management programs, documenting changing conditions with time, and evaluating compliance with water-quality standards, total maximum daily loads (TMDLs), National Pollutant Discharge Elimination System (NPDES) permit conditions, and other established guidelines and goals. Constituent concentrations in water during base flow varied across the study area and 2010 conditions were not markedly different from those measured in 2003, 2004, and 2007. Generally the highest specific conductance and concentrations of dissolved solids and major ions in water occurred at urban sites except the upstream Cedar Creek site, which is rural and has a large area of commercial and industrial land less than 1 mile upstream on both sides of the creek. The highest base-flow nutrient concentrations in water occurred downstream from wastewater treatment facilities. Water chemistry data represent base-flow conditions only, and do not show the variability in concentrations that occurs during stormwater runoff. Constituent concentrations in streambed sediment also varied across the study area and some notable changes occurred from previously collected data. High organic carbon and nutrient concentrations at the rural Big Bull Creek site in 2003 decreased

  17. Johnson Creek Artificial Propagation and Enhancement Project Operations and Maintenance Program; Brood Year 1998: Johnson Creek Chinook Salmon Supplementation, Biennial Report 1998-2000.

    Energy Technology Data Exchange (ETDEWEB)

    Daniel, Mitch; Gebhards, John

    2003-05-01

    The Nez Perce Tribe, through funding provided by the Bonneville Power Administration, has implemented a small scale chinook salmon supplementation program on Johnson Creek, a tributary in the South Fork of the Salmon River, Idaho. The Johnson Creek Artificial Propagation Enhancement project was established to enhance the number of threatened Snake River summer chinook salmon (Oncorhynchus tshawytscha) returning to Johnson Creek through artificial propagation. Adult chinook salmon collection and spawning began in 1998. A total of 114 fish were collected from Johnson Creek and 54 fish (20 males and 34 females) were retained for Broodstock. All broodstock were transported to Lower Snake River Compensation Plan's South Fork Salmon River adult holding and spawning facility, operated by the Idaho Department of Fish and Game. The remaining 60 fish were released to spawn naturally. An estimated 155,870 eggs from Johnson Creek chinook spawned at the South Fork Salmon River facility were transported to the McCall Fish Hatchery for rearing. Average fecundity for Johnson Creek females was 4,871. Approximately 20,500 eggs from females with high levels of Bacterial Kidney Disease were culled. This, combined with green-egg to eyed-egg survival of 62%, resulted in about 84,000 eyed eggs produced in 1998. Resulting juveniles were reared indoors at the McCall Fish Hatchery in 1999. All of these fish were marked with Coded Wire Tags and Visual Implant Elastomer tags and 8,043 were also PIT tagged. A total of 78,950 smolts were transported from the McCall Fish Hatchery and released directly into Johnson Creek on March 27, 28, 29, and 30, 2000.

  18. Stevens-Johnson syndrome and toxic epidermal necrolysis: a review

    Directory of Open Access Journals (Sweden)

    Anthony Wong

    Full Text Available SUMMARY Stevens-Johnson syndrome (SJS and toxic epidermal necrolysis (TEN are uncommon, acute and potentially life-threatening adverse cutaneous drug reactions. These pathologies are considered a hypersensitivity reaction and can be triggered by drugs, infections and malignancies. The drugs most often involved are allopurinol, some antibiotics, including sulfonamides, anticonvulsants such as carbamazepine, and some non-steroid anti-inflammatory drugs (NSAIDs. Necrosis of keratinocytes is manifested clinically by epidermal detachment, leading to scalded skin appearance. The rash begins on the trunk with subsequent generalization, usually sparing the palmoplantar areas. Macular lesions become purplish, and epidermal detachment occurs, resulting in flaccid blisters that converge and break, resulting in extensive sloughing of necrotic skin. Nikolsky's sign is positive in perilesional skin. SJS and TEN are considered to be two ends of the spectrum of one disease, differing only by their extent of skin detachment. Management of patients with SJS or TEN requires three measures: removal of the offending drug, particularly drugs known to be high-risk; supportive measures and active interventions. Early diagnosis of the disease, recognition of the causal agent and the immediate withdrawal of the drug are the most important actions, as the course of the disease is often rapid and fatal.

  19. Steven johnsons syndrome and toxic epidermal necrolysis: A review

    Directory of Open Access Journals (Sweden)

    Sri ram Anne

    2014-12-01

    Full Text Available Toxic epidermal necrolysis (TEN and Stevens Johnson Syndrome (SJS are severe adverse cutaneous drug reactions that predominantly involve the skin and mucous membranes. They are characterized by mucocutaneous tenderness and typically hemorrhagic erosions, erythema and more or less severe epidermal detachment presenting as blisters and areas of denuded skin. Drugs are assumed or identified as the main cause of SJS/TEN in most cases, but Mycoplasma pneumoniae and Herpes simplex virus infections are well documented causes alongside rare cases in which the etiology remains unknown. Several drugs are at "high" risk of inducing TEN/SJS including: Allopurinol, Trimethoprim-sulfamethoxazole and other sulfonamide-antibiotics, aminopenicillins, cephalosporins, quinolones, carbamazepine, phenytoin, phenobarbital and NSAID's of the oxicam-type. Differential diagnosis includes linear IgA dermatosis and paraneoplastic pemphigus, pemphigus vulgaris and bullous pemphigoid, acute generalized exanthematous pustulosis (AGEP, disseminated fixed bullous drug eruption and staphyloccocal scalded skin syndrome (SSSS. Due to the high risk of mortality, management of patients with SJS/TEN requires rapid diagnosis, identification and interruption of the culprit drug, specialized supportive care ideally in an intensive care unit, and consideration of immunomodulating agents such as high-dose intravenous immunoglobulin therapy.

  20. Space Shuttle Program Legacy Report

    Science.gov (United States)

    Johnson, Scott

    2012-01-01

    Share lessons learned on Space Shuttle Safety and Mission Assurance (S&MA) culture, processes, and products that can guide future enterprises to improve mission success and minimize the risk of catastrophic failures. Present the chronology of the Johnson Space Center (JSC) S&MA organization over the 40-year history of the Space Shuttle Program (SSP) and identify key factors and environments which contributed to positive and negative performance.

  1. Brood Year 2004: Johnson Creek Chinook Salmon Supplementation Report, June 2004 through March 2006.

    Energy Technology Data Exchange (ETDEWEB)

    Gebhards, John S.; Hill, Robert; Daniel, Mitch [Nez Perce Tribe

    2009-02-19

    The Nez Perce Tribe, through funding provided by the Bonneville Power Administration, has implemented a small scale chinook salmon supplementation program on Johnson Creek, a tributary in the South Fork of the Salmon River, Idaho. The Johnson Creek Artificial Propagation Enhancement project was established to enhance the number of threatened Snake River spring/summer chinook salmon (Oncorhynchus tshawytscha) returning to Johnson Creek to spawn through artificial propagation. This was the sixth season of adult chinook broodstock collection in Johnson Creek following collections in 1998, 2000, 2001, 2002, and 2003. Weir installation was completed on June 21, 2004 with the first chinook captured on June 22, 2004 and the last fish captured on September 6, 2004. The weir was removed on September 18, 2004. A total of 338 adult chinook, including jacks, were captured during the season. Of these, 211 were of natural origin, 111 were hatchery origin Johnson Creek supplementation fish, and 16 were adipose fin clipped fish from other hatchery operations and therefore strays into Johnson Creek. Over the course of the run, 57 natural origin Johnson Creek adult chinook were retained for broodstock, transported to the South Fork Salmon River adult holding and spawning facility and held until spawned. The remaining natural origin Johnson Creek fish along with all the Johnson Creek supplementation fish were released upstream of the weir to spawn naturally. Twenty-seven Johnson Creek females were artificially spawned with 25 Johnson Creek males. Four females were diagnosed with high bacterial kidney disease levels resulting in their eggs being culled. The 27 females produced 116,598 green eggs, 16,531 green eggs were culled, with an average eye-up rate of 90.6% resulting in 90,647 eyed eggs. Juvenile fish were reared indoors at the McCall Fish Hatchery until November 2005 and then transferred to the outdoor rearing facilities during the Visual Implant Elastomer tagging operation

  2. 'The Enthusiastick Fit': The Function and Fate of the Poet in Samuel Johnson's RASSELAS.

    OpenAIRE

    García Landa, José Ángel

    2009-01-01

    Estudio sobre historia de la teoría literaria y sobre la novela de Samuel Johnson "The History of Rasselas, Prince of Abyssinia" (1759), examinando teoría literaria de Johnson allí expuesta a la luz de sus otros pronunciamientos y del pensamiento estético de la época. Las relaciones de Johnson tanto con el clasicismo como con el prerromanticismo empirista se resisten a una interpretación que desdeñe la tensión entre la lucidez y el voluntarismo del autor. Este artículo vuelve por tanto, esta ...

  3. Elimination of noise peak for signal processing in Johnson noise thermometry development

    Energy Technology Data Exchange (ETDEWEB)

    Hwang, I. G.; Moon, B. S.; Jeong, J. E.; Jeo, Y. H. [KAERI, Taejon (Korea, Republic of); Kisner, Roger A. [Oak Ridge National Lab., Oak Ridge (United States)

    2003-10-01

    The internal and external noise is the most considering obstacle in development of Johnson Noise Thermometry system. This paper addresses an external noise elimination issue of the Johnson Noise Thermometry system which is underway of development in collaboration between KAERI and ORNL. Although internal random noise is canceled by Cross Power Spectral Density function, a continuous wave penetrating into the electronic circuit is eliminated by the difference of peaks between Johnson signal and external noise. The elimination logic using standard deviation of CPSD and energy leakage problem in discrete CPSD function are discussed in this paper.

  4. Analysis of irreversible displacements of Daniel-Johnson dam

    Energy Technology Data Exchange (ETDEWEB)

    Chouinard, L.; Zhao, W. [McGill Univ., Montreal, PQ (Canada); Lariviere, R. [Hydro-Quebec, Montreal, PQ (Canada); Cote, P. [Hydro-Quebec Production, Baie-Comeau, PQ (Canada)

    2006-07-01

    Irreversible displacements in dams are associated with alkali-aggregate reaction, creep, and other damaging effects that compromise the safety of dams. An identification of the nature of irreversible displacements is needed to predict the future behaviour of dams as well as to select appropriate remedial measures. This paper provided details of a principal component analysis (PCA) used to investigate swelling and small irreversible displacements observed at the Daniel-Johnson dam in Quebec. PCA is a multivariate statistical method that performs the analysis of correlations or covariances between several random variables simultaneously. Three datasets were used: (1) reservoir water level; (2) air temperature; and (3) pendulum displacements. Standard linear regression analyses (HST) were performed for each variable in order to eliminate outliers and replace missing values. The multivariate dataset was then used to perform PCA on the entire dataset as well as on subsets from the original data. Displacement data from pendulums were used in the multivariate statistical analysis in which each component was treated as a separate variable. The comparison of irreversible displacements of the dam from HST analysis and principal component analysis (PCA) indicated that results were consistent with the data. The PCA analysis identified dominant patterns of behaviour and detected 2 distinct components of irreversible deformations arising from creep and swelling of concrete. Results of the study showed that the PCA analysis led to a better understanding of the overall behaviour of the dam and of individual arches and buttresses. It was concluded that the PCA analysis method will help to improve dam safety in addition to more accurately predicting the future behaviour of dams. 6 refs., 2 tabs., 9 figs.

  5. Correction to white-johnson, ford, and sellers (2010).

    Science.gov (United States)

    2015-01-01

    Reports an error in "Parental racial socialization profiles: Association with demographic factors, racial discrimination, childhood socialization, and racial identity" by Rhonda L. White-Johnson, Kahlil R. Ford and Robert M. Sellers (Cultural Diversity and Ethnic Minority Psychology, 2010[Apr], Vol 16[2], 237-247). In the article, there was an error in the Measures subsection. The following citation should have been included in the third paragraph " Mothers' childhood racial socialization experiences. Prior racial socialization messages were assessed using four items adapted from the Comprehensive Race Socialization Inventory (Lesane- Brown, Brown, Caldwell, & Sellers, 2005)." Additionally, the included reference should have been included in the Reference section. (The following abstract of the original article appeared in record 2010-07475-016.) The authors examined patterns of racial socialization practices in a sample of 212 African American mothers. They investigated the relation between parent profiles of racial socialization messages with child and parent demographic factors and race-related experiences, as well as parent racial identity attitudes. Using latent class analyses, the authors identified 3 patterns of parent-reported racial socialization experiences: multifaceted, low race salience, and unengaged. In general, findings indicate that mothers in the multifaceted profile were more educated, experienced more racial discrimination, and talked about race during their childhood more than mothers in the unengaged profile. The multifaceted profile also differed from the low race salience and unengaged profiles on several racial identity dimensions. Although the patterned approach used in this study lends itself to a more complex study of racial socialization in future research, it also highlights the associations between parent's race-relevant experiences and the messages they communicate to their children about race. (PsycINFO Database Record (c) 2015 APA

  6. Corporate social responsibility in public health: A case-study on HIV/AIDS epidemic by Johnson & Johnson company in Africa.

    Science.gov (United States)

    Chattu, Vijay Kumar

    2015-01-01

    HIV/AIDS has claimed millions of lives in the global workforce and continues to remain a threat to many businesses. An estimated 36.5 million of working people are living with HIV; the global workforce has lost 28 million people from AIDS since the beginning of the epidemic. In the absence of access to treatment, this number could grow to 74 million by 2015. The epidemic continues to affect the working population through absenteeism, sickness and death. Corporate Social Responsibility (CSR) is an obligation that corporates have toward their employees, community and society. A review and documentation of one such CSR by Johnson & Johnson (a multinational company) for HIV/AIDS in Africa is presented here. Johnson & Johnson Company is involved in numerous projects around the world to combat the HIV/AIDS epidemic. The company is working to fight the spread of the disease and improve the quality of life for those living with the illness through various donations of its products and sponsorship of local programs. This case study also highlights different categories of CSR activities such as Cause Promotion, Cause related Marketing, Corporate Philanthropy, Corporate Social Marketing, Corporate Volunteering and Socially responsible business practices, which are discussed with specific examples from different countries in Africa. CSR of any business encompasses the economic, legal, ethical & discretionary expectation placed on the organization by society at a given point of time. CSR is therefore the obligation that corporations have toward their stakeholders and society in general which horizons beyond what is prescribed by law or union contracts. Johnson & Johnson has a proved history of being committed to caring for people and a good example of a company with a long history of citizenship and sustainability.

  7. 75 FR 17437 - NASA Advisory Council; Commercial Space Committee; Meeting

    Science.gov (United States)

    2010-04-06

    ... SPACE ADMINISTRATION NASA Advisory Council; Commercial Space Committee; Meeting AGENCY: National... announces a meeting of the Commercial Space Committee of the NASA Advisory Council. DATES: Monday, April 26, 2010, 1:30 p.m.-6 p.m. CDT. ADDRESSES: NASA Johnson Space Center, Gilruth Conference Center, 2101...

  8. 75 FR 53349 - NASA Advisory Council; Commercial Space Committee; Meeting

    Science.gov (United States)

    2010-08-31

    ... SPACE ADMINISTRATION NASA Advisory Council; Commercial Space Committee; Meeting AGENCY: National... announces a meeting of the Commercial Space Committee of the NASA Advisory Council. DATES: Tuesday September 14, 8 a.m. to 12 noon CDT. ADDRESSES: NASA Johnson Space Center, Building 1, Room 966. FOR...

  9. 75 FR 16197 - NASA Advisory Council; Space Operations Committee; Meeting

    Science.gov (United States)

    2010-03-31

    ... SPACE ADMINISTRATION NASA Advisory Council; Space Operations Committee; Meeting AGENCY: National... announces a meeting of the NASA Advisory Council Space Operations Committee. DATES: Tuesday, April 13, 2010, 3-5 p.m. CDT. ADDRESSES: NASA Johnson Space Center's Gilruth Center, Lone Star ] Room, 18753...

  10. The Foote Brook Natural Channel Design Restoration Project (2001) and Post Monitoring Project (2002)--Johnson, Vermont

    Data.gov (United States)

    Vermont Center for Geographic Information — The Foote Brook, located in Johnson, Vermont, is known to biologists and anglers as a high quality stream with significant natural reproduction of rainbow, brown,...

  11. Post Monitoring (2003) of the Foote Brook Natural Channel Design Restoration Project--Johnson, Vermont

    Data.gov (United States)

    Vermont Center for Geographic Information — The Foote Brook, located in Johnson, Vermont, is known to biologists and anglers as a high quality stream with significant natural reproduction of rainbow, brown,...

  12. Probing Johnson noise and ballistic transport in normal metals with a single-spin qubit

    National Research Council Canada - National Science Library

    Kolkowitz, S; Safira, A; High, A. A; Devlin, R. C; Choi, S; Unterreithmeier, Q. P; Patterson, D; Zibrov, A. S; Manucharyan, V. E; Park, H; Lukin, M. D

    2015-01-01

    .... These fluctuations are intrinsically related to the conductivity of the metal. We use single-spin qubits associated with nitrogen-vacancy centers in diamond to probe Johnson noise in the vicinity of conductive silver films...

  13. 77 FR 16262 - Importer of Controlled Substances, Notice of Registration; Johnson Matthey, Inc., Pharmaceutical...

    Science.gov (United States)

    2012-03-20

    ...., Pharmaceutical Materials By Notice dated December 2, 2011, and published in the Federal Register on December 12, 2011, 76 FR 77253, Johnson Matthey, Inc., Pharmaceutical Materials, 2003 Nolte Drive, West...

  14. Towards a practical Johnson noise thermometer for long-term measurements in harsh environments

    Energy Technology Data Exchange (ETDEWEB)

    Greenen, Adam; Pearce, Jonathan [National Physical Laboratory, Hampton Road, Teddington, TW11 0LW, (United Kingdom); Cruickshank, David; Bramley, Paul [Metrosol Limited, Plum Park Estate, Watling Street, Paulerspury, Northamptonshire, NN12 6LQ, (United Kingdom)

    2015-07-01

    The impact of mechanical and chemical changes in conventional sensors such as thermocouples and resistance thermometers can be avoided by instead using temperature sensors based on fundamental thermometry. A prime example of this is Johnson noise thermometry, which is based on measurement of the fluctuations in the voltage of a resistor arising from thermal motion of charge carriers - i.e. the 'Johnson noise'. A Johnson noise thermometer never needs calibration and is insensitive to the condition of the sensor material. It is therefore ideally suited to long-term temperature measurements in harsh environments, such as nuclear reactor coolant circuits, in-pile measurements, nuclear waste management and storage, and severe accident monitoring. There have been a number of previous attempts to develop a Johnson noise thermometer for the nuclear industry, but none have reached commercial exploitation because of technical problems in practical implementation. The main challenge is to extract the tiny Johnson noise signal from ambient electrical noise influences, both from the internal amplification electronics, and from external electrical noise sources. Recent advances in electronics technology and digital signal processing techniques have opened up new possibilities for developing a viable, practical Johnson noise thermometer. We describe a project funded by the UK Technology Strategy Board (now Innovate UK) 'Developing the nuclear supply chain' call, currently underway, to develop a practical Johnson noise thermometer that makes use of innovative electronics for ultralow noise amplification and signal processing. The new electronics technology has the potential to help overcome the problems encountered with previous attempts at constructing a practical Johnson noise thermometer. An outline of the new developments is presented, together with an overview of the current status of the project. (authors)

  15. The Development of a Practical, Drift-Free, Johnson-Noise Thermometer for Industrial Applications

    Science.gov (United States)

    Bramley, Paul; Cruickshank, David; Pearce, Jonathan

    2017-02-01

    Johnson noise thermometers measure a phenomenon that is directly linked to thermodynamic temperature by a fundamental physical law. The measurement of Johnson noise therefore offers the prospect of realizing a drift-free thermometer. Despite previous attempts to produce a practical Johnson noise thermometer for industrial applications, the technique is currently used only in niche research applications to explore discrepancies between practical temperature scales and thermodynamic temperature, or to determine Boltzmann's constant. This has largely been due to the historical use of switched correlators to measure Johnson noise, which limits the sense resistance and measurement bandwidth that can be employed. This constraint limits the Johnson noise signal to levels near the limits of measurement. A new technique that eliminates switching and thereby allows the use of much higher sense resistances and bandwidths to increase the Johnson noise signal is presented. The signal power achieved is significantly higher than for systems using a switched correlator. Results so far indicate that measurement performance is compatible with the requirements of industrial applications. Specifically, uncertainties of <0.3°C (95 % confidence) were demonstrated for measurements near ambient temperature with a measurement time of only 7 s.

  16. Toxic epidermal necrolysis and Stevens-Johnson syndrome

    Directory of Open Access Journals (Sweden)

    French Lars E

    2010-12-01

    Full Text Available Abstract Toxic epidermal necrolysis (TEN and Stevens Johnson Syndrome (SJS are severe adverse cutaneous drug reactions that predominantly involve the skin and mucous membranes. Both are rare, with TEN and SJS affecting approximately 1or 2/1,000,000 annually, and are considered medical emergencies as they are potentially fatal. They are characterized by mucocutaneous tenderness and typically hemorrhagic erosions, erythema and more or less severe epidermal detachment presenting as blisters and areas of denuded skin. Currently, TEN and SJS are considered to be two ends of a spectrum of severe epidermolytic adverse cutaneous drug reactions, differing only by their extent of skin detachment. Drugs are assumed or identified as the main cause of SJS/TEN in most cases, but Mycoplasma pneumoniae and Herpes simplex virus infections are well documented causes alongside rare cases in which the aetiology remains unknown. Several drugs are at "high" risk of inducing TEN/SJS including: Allopurinol, Trimethoprim-sulfamethoxazole and other sulfonamide-antibiotics, aminopenicillins, cephalosporins, quinolones, carbamazepine, phenytoin, phenobarbital and NSAID's of the oxicam-type. Genetic susceptibility to SJS and TEN is likely as exemplified by the strong association observed in Han Chinese between a genetic marker, the human leukocyte antigen HLA-B*1502, and SJS induced by carbamazepine. Diagnosis relies mainly on clinical signs together with the histological analysis of a skin biopsy showing typical full-thickness epidermal necrolysis due to extensive keratinocyte apoptosis. Differential diagnosis includes linear IgA dermatosis and paraneoplastic pemphigus, pemphigus vulgaris and bullous pemphigoid, acute generalized exanthematous pustulosis (AGEP, disseminated fixed bullous drug eruption and staphyloccocal scalded skin syndrome (SSSS. Due to the high risk of mortality, management of patients with SJS/TEN requires rapid diagnosis, evaluation of the prognosis

  17. Latest EMBA Cohort Includes Group from NASA’s Johnson Space Center

    OpenAIRE

    2012-01-01

    When NPS welcomed its newest cohort of Executive Master’s of Business Administration (EMBA) students, among them were the usual military officers representing traditional Fleet concentration sites such as San Diego, Pearl Harbor and Norfolk, Va.

  18. Status of High-Strength Nanotube Composites at Johnson Space Center

    Science.gov (United States)

    Files, Bradley S.; Mayeaux, Brian; Proft, William; Nikolaev, Pavel; Nicholson, Leonard S. (Technical Monitor)

    2000-01-01

    Single-wall carbon nanotubes offer extraordinary mechanical properties that could start a revolution in materials science. The combination of very high strength and modulus with high strain to failure makes nanotubes an ideal fiber for strengthening in composites. Because of the scale of these fibers, new challenges exist for processing of composite materials and materials characterization. Our project includes aspects of nanotube materials from production and characterization to purification and incorporation into composites for mechanical testing. Early results show that some new techniques will be necessary for the strength of single wall nanotubes to be fully utilized. Current research at JSC focuses on structural polymeric materials to attempt to lower the weight of spacecraft necessary for interplanetary missions. Studies show good nanotube dispersion and wetting by the epoxy materials. Results of tensile strength tests will also be reported. This presentation will focus on current research into polymer nanotube composites and the next steps toward this revolution in aerospace materials.

  19. Space space space

    CERN Document Server

    Trembach, Vera

    2014-01-01

    Space is an introduction to the mysteries of the Universe. Included are Task Cards for independent learning, Journal Word Cards for creative writing, and Hands-On Activities for reinforcing skills in Math and Language Arts. Space is a perfect introduction to further research of the Solar System.

  20. Geochemistry of the Johnson River, Lake Clark National Park and Preserve, Alaska

    Science.gov (United States)

    Brabets, Timothy P.; Riehle, James R.

    2003-01-01

    The Johnson River Basin, located in Lake Clark National Park and Preserve, drains an area of 96 square miles. A private inholding in the upper part of the basin contains a gold deposit that may be developed in the future. To establish a natural baseline to compare potential effects on water quality if development were to occur, the upper part of the Johnson River Basin was studied from 1999 to 2001 as part of a cooperative study with the National Park Service. Two basic rock types occur within the drainage basin of the study: the Jurassic Talkeetna Formation of interbedded volcanic and volcaniclastic rocks, and the slightly younger plutonic rocks of the Aleutian-Alaska Ranges batholith. The Johnson River gold prospect reflects widespread, secondary mineralization and alteration of the Talkeetna Formation. Metals found at the prospect proper are: arsenic, cadmium, copper, gold, iron, lead, mercury, molybdenum, selenium, silver, and zinc. The Johnson River prospect is located in the East Fork Ore Creek Basin, a 0.5 square mile watershed that is a tributary to the Johnson River. Water quality data from this stream reflect the mineralization of the basin and the highest concentrations of several trace elements and major ions of the water column were found in this stream. Presently, pH in this stream is normal, indicating that there is sufficient buffering capacity. At the Johnson River streamgage, which drains approximately 25 mi2 including the East Fork Ore Creek, concentrations of these constituents are significantly lower, reflecting the runoff from Johnson Glacier and Double Glacier, which account for approximately 75 percent of the total discharge. Streambed concentrations of cadmium, lead, and zinc from East Fork Ore Creek and its receiving stream, Ore Creek, typically exceed concentrations where sediment dwelling organisms would be affected. Similar to the water column chemistry, concentrations of these elements are lower at the Johnson River streamgage

  1. Theory of Evanescent-Wave Johnson Noise in Qubit Devices

    Science.gov (United States)

    2015-05-28

    fluctuations near thin metallic films , Phys. Rev. B , (03 2014): 115401. doi: Luke S. Langsjoen, Amrit Poudel, Maxim G. Vavilov, Robert Joynt. Qubit...Langsjoen, Amrit Poudel, Maxim G. Vavilov, Robert Joynt. Electromagnetic fluctuations near thin metallic films , Physical Review B (03 2014) TOTAL: 1...included the metal half-space, the finite slab, capacitor plates, and metallic quantum wires. We developed numerical techniques for 1- and 2

  2. Modifications in the AA5083 Johnson-Cook Material Model for Use in Friction Stir Welding Computational Analyses

    Science.gov (United States)

    2011-12-30

    REPORT Modifications in the AA5083 Johnson-Cook Material Model for Use in Friction Stir Welding Computational Analyses 14. ABSTRACT 16. SECURITY...TERMS AA5083, friction stir welding , Johnson-Cook material model M. Grujicic, B. Pandurangan, C.-F. Yen, B. A. Cheeseman Clemson University Office of...Use in Friction Stir Welding Computational Analyses Report Title ABSTRACT Johnson-Cook strength material model is frequently used in finite-element

  3. Lamotrigine-induced Stevens-Johnson syndrome in a 25 year old lady

    Directory of Open Access Journals (Sweden)

    Hrishikesh Kashyapa

    2016-12-01

    Full Text Available Stevens-Johnson syndrome (SJS is an immune-complex mediated hypersensitivity reaction and has been linked as an adverse side effect to many drugs. This case is about a 25 year old woman who had lamotrigine-induced Stevens-Johnson syndrome which is known to occur but is rare. Lamotrigine, an anticonvulsive medication and also a commonly used mood stabilizer was prescribed to the patient to treat symptoms of anxiety and depression. The patient developed Stevens-Johnson syndrome 5 weeks after start of therapy. This case is discussed for its relevance to the use of lamotrigine which is currently prescribed very commonly in psychiatric practices. [Int J Basic Clin Pharmacol 2016; 5(6.000: 2694-2696

  4. Sodium valproate induced Stevens Johnson syndrome and hepatitis in a pediatric patient: a case report

    Directory of Open Access Journals (Sweden)

    Vinodkumar Mugada

    2016-07-01

    Full Text Available Stevens Johnson syndrome is a life threatening IgE mediated hypersensitivity reaction affecting the skin and mucous membranes and should be considered in any child who has been on antiepileptic medication. A case of Stevens Johnson Syndrome and hepatitis following treatment with sodium valproate is presented. A 2 year old female pediatric patient suffering from atonic seizures and myoclonic seizures was treated with sodium valproate monotherapy. The patient reported skin peeling and rash since 15 days and yellowish discoloration of sclera since 7 days. Her laboratory investigations revealed abnormal hemoglobin levels, blood urea and liver function. Based on physical examination and laboratory findings it was diagnosed that she was suffering from sodium valproate induced Stevens Johnson Syndrome with hepatitis. The score of toxic epidermal necrosis (SCORTEN criteria score was 1. She was treated with antihistamines, iron folic acid and topical liquid paraffin lotion. [Int J Res Med Sci 2016; 4(7.000: 3058-3060

  5. PENERAPAN METODE BARBER JOHNSON UNTUK MENILAI EFISIENSI PELAYANAN RUMAH SAKIT DI INDONESIA

    Directory of Open Access Journals (Sweden)

    Titik Respati

    2012-11-01

    Full Text Available Barber Johnson graphic method is used to evaluate the hospital management especially for services management. Indicators used is Bed Occupancy Rate (BOR, Average Length of Stay (ALOS, Bed Tum Over (BTO and Turn Over Interval (TOI. The objective of this study is to find out the efficiency of hospital management according to the Barber Johnson Graphic criteria and problems in accommodating it. This is an explorative study done in Syalful Anwar Hospital, Malang and also used secondary data taken from East Java Health Office Province. The study found out that from 38 hospitals only 5%, 10%, 18% and 16% of them could reached the efficiency area in 1994, 1995, 1996 and 1997 respectively. Some obstacles in applying the method are: government policies regarding tariff, hospital classes and several "rare" cases in patient made them stay longer than needed to give the medical student the opportunity to study them.   Keywords: hospital of efficiency: barber johnson method

  6. Etude d une observation de la maladie Dubin - Johnson en Iran

    Directory of Open Access Journals (Sweden)

    F. Motazedi

    1966-01-01

    Full Text Available We have reported the first observation of the Dubin-Johnson disease in a young Iranian women of jewish origine~. Considering the face that 9 patients out of 13 described by the authors from Israel were Iranians. we beleive that this disease should be more frequent• in Iran than recorded up to 'now and suggest that in every case of chronic icterus the question of possible high frequency of Dubin _ Johnson disease be considered and necessary studies and ivestigations be made to reach a correct diagnosis.

  7. Report of the EMI Testing of the Johnson Noise Thermometry System

    Energy Technology Data Exchange (ETDEWEB)

    Britton Jr., Charles L. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Roberts, Michael [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2014-06-01

    This report summarizes the Electromagnetic Interference (EMI) testing of the Johnson Noise Thermometry System developed at ORNL. The EMI performance is very important for Johnson Noise Thermometry because it requires accurate measurement of a very small noise signal that is amplified 10,000 times. Any interference in the form on pickup from external signal sources from such as fluorescent lighting ballasts, motors, etc. can skew the measurement. Testing is therefore very important in determining the effects of these external noise sources. Results from testing in several environments with various sources of EMI are presented here.

  8. Zero-point energy in the Johnson noise of resistors: Is it there?

    CERN Document Server

    Kish, Laszlo B

    2015-01-01

    There is a longstanding debate about the zero-point term in the Johnson noise voltage of a resistor: Is it indeed there or is it only an experimental artifact due to the uncertainty principle for phase-sensitive amplifiers? We show that, when the zero-point term is measured by the mean energy and force in a shunting capacitor and, if these measurements confirm its existence, two types of perpetual motion machines could be constructed. Therefore an exact quantum theory of the Johnson noise must include also the measurement system used to evaluate the observed quantities. The results have implications also for phenomena in advanced nanotechnology.

  9. Integration of a sensor based multiple robot environment for space applications: The Johnson Space Center Teleoperator Branch Robotics Laboratory

    Science.gov (United States)

    Hwang, James; Campbell, Perry; Ross, Mike; Price, Charles R.; Barron, Don

    1989-01-01

    An integrated operating environment was designed to incorporate three general purpose robots, sensors, and end effectors, including Force/Torque Sensors, Tactile Array sensors, Tactile force sensors, and Force-sensing grippers. The design and implementation of: (1) the teleoperation of a general purpose PUMA robot; (2) an integrated sensor hardware/software system; (3) the force-sensing gripper control; (4) the host computer system for dual Robotic Research arms; and (5) the Ethernet integration are described.

  10. Modified masters johnson technique in the treatment of sexual inadequacy in males.

    Science.gov (United States)

    Gupta, P; Banerjee, G; Nandi, D N

    1989-01-01

    21 married men were treated for erectile defect and premature ejaculation (both primary & secondary) by modified Masters-Johnson technique. 16(76.2%) recovered. The success rate was higher in secondary cases (83.3%). Best results were obtained in 30-39 yrs age group. The modified technique has been described in detail. Factors favourable and unfavourable for success have been discussed.

  11. Testing a Threshold: An Approximate Replication of Johnson, Mercado & Acevedo 2012

    Science.gov (United States)

    Johnson, Mark D.; Nicodemus, Christine L.

    2016-01-01

    In order to better understand the role of working memory in second language (L2) written production, this study contributes to recent research attempting to apply Kellogg's model of working memory in first language (L1) writing to L2 writing research (Ellis & Yuan 2004; Ong & Zhang 2010; Johnson, Mercado & Acevedo 2012). This paper…

  12. Searching for the Magic Johnson Effect: AIDS, Adolescents, and Celebrity Disclosure.

    Science.gov (United States)

    Brown, Bruce R., Jr.; And Others

    1996-01-01

    Measured changes in AIDS-related attitudes/behaviors in adolescents (n=181) in the 13 months following Magic Johnson's disclosure that he was HIV positive. Tested whether gender, race, age, sexual experience, and preexisting HIV-avoidant behaviors would be significant dependent variables. Sixty percent of respondents reported the announcement…

  13. Testing a Threshold: An Approximate Replication of Johnson, Mercado & Acevedo 2012

    Science.gov (United States)

    Johnson, Mark D.; Nicodemus, Christine L.

    2016-01-01

    In order to better understand the role of working memory in second language (L2) written production, this study contributes to recent research attempting to apply Kellogg's model of working memory in first language (L1) writing to L2 writing research (Ellis & Yuan 2004; Ong & Zhang 2010; Johnson, Mercado & Acevedo 2012). This paper…

  14. Obituary Betty Johnson - tireless advocate for woment to pursue - and return to - scientific careers

    CERN Multimedia

    Perry, K

    2003-01-01

    "The physicist Professor Elizabeth (Betty) Johnson, who has died aged 66, was a major force in the establishment of the Daphne Jackson Trust in 1992 to help women returning to science after a career break. She worked tirelessly to encourage women into science, both through her own example as a female scientist and her advocacy of science as a career" (1/2 page).

  15. Annual Report of Indian Education in Montana. Johnson-O'Malley Activities, Fiscal Year 1978.

    Science.gov (United States)

    Montana State Office of the Superintendent of Public Instruction, Helena.

    During fiscal year 1978, the Montana Office of Public Instruction administered Johnson-O'Malley (JOM) Act funds totaling $684,200 for projects affecting 4,501 eligible students on the Crow, Fort Peck, Fort Belknap, and Rocky Boy's Indian Reservations. Funds were awarded on a per capita basis to provide supplemental educational programs for Indian…

  16. Employer Manpower Needs and Job Entry Requirements for Paralegals within Johnson County, Kansas.

    Science.gov (United States)

    Tatham, Elaine L.

    In order to determine whether a paralegal program could be successfully implemented at Johnson County Community College, surveys were sent to 262 local attorneys (with a 24% response rate) and to 41 members of the Kansas City Association of Legal Assistants (71% response). Emphasis was placed on determining area employment needs and the…

  17. Employment, Salary & Placement Information for Johnson County Community College Career Programs.

    Science.gov (United States)

    Conklin, Karen A.

    More than forty-six career programs are offered at Johnson County Community College (JCCC) in Kansas, in such areas as Cosmetology, Dental Assistance, and Travel and Tourism. These programs specialize in the types of industries that are currently growing at high rates, such as computer-related occupations and special education teachers. This…

  18. Stevens-Johnson syndrome progressing to toxic epidermal necrolysis with haloperidol and carbamazepine combination

    Directory of Open Access Journals (Sweden)

    Ajay Kumar

    2011-01-01

    Full Text Available Carbamazepine and other anticonvulsants are commoner cause of severe adverse cutaneous drug reactions such as erythema multiforme, toxic epidermal necrolysis (TEN, and Stevens-Johnson syndrome (SJS. We report a case of SJS rapidly progressing to TEN with a combination of haloperidol and carbamazepine in a patient with bipolar affective disorder. The pathophysiological mechanism underlying this reaction is discussed.

  19. Danish resonances and repercussions in the life and work of William H. Johnson

    DEFF Research Database (Denmark)

    Sørensen, Bent

    William H. Johnson was an outstanding African-American artist, represented with hundreds of works in the Smithsonian Museum of American Art’s collection, but he was also a resident of Denmark for the better part of the 1930s, and again for a brief spell after WWII. While studying art in Paris...

  20. Misidentifying the Effects of Parental Incarceration? A Comment on Johnson and Easterling (2012)

    Science.gov (United States)

    Wildeman, Christopher; Wakefield, Sara; Turney, Kristin

    2013-01-01

    In a recent "Journal of Marriage and Family" article, Johnson and Easterling (2012) reviewed research on the effects of parental incarceration on child well-being, focusing on the various conceptual frameworks linking parental incarceration and child well-being and the "important methodological and conceptual challenges related to selection bias"…

  1. UNCERTAINTY AND THE JOHNSON-ETTINGER MODEL FOR VAPOR INTRUSION CALCULATIONS

    Science.gov (United States)

    The Johnson-Ettinger Model is widely used for assessing the impacts of contaminated vapors on residential air quality. Typical use of this model relies on a suite of estimated data, with few site-specific measurements. Software was developed to provide the public with automate...

  2. First case of mirtazepine-induced Stevens-Johnson syndrome from India

    Directory of Open Access Journals (Sweden)

    Amit Bhasin

    2012-01-01

    Full Text Available A 28-year-old woman, a known case of systemic lupus erythematosus (SLE, was admitted with mucocutaneous ulceroerosive lesions with blisters and thrombocytopenia after taking antidepressant mirtazepine. Exacerbation of SLE and drug-induced eruption was diagnosed. Clinical and laboratory markers were suggestive of Stevens-Johnson syndrome. This is a rare adverse effect of the newer generation antidepressant mirtazepine.

  3. Fighting with Reality: Considering Mark Johnson's Pragmatic Realism through Bruce Lee's Jeet Kune Do Method

    Science.gov (United States)

    Miller, Alexander David

    2015-01-01

    This dissertation considers the supportive and complementary relation between Mark Johnson's embodied realism and Bruce Lee's Jeet Kune Do as a philosophical practice. In exploring this relationship, the emphasis on one's embodiment condition and its relationship with metaphor and self-expression are the primary focus. First, this work involves…

  4. Photometric transformation from RGB Bayer filter system to Johnson-Cousins BVR filter system

    Science.gov (United States)

    Park, Woojin; Pak, Soojong; Shim, Hyunjin; Le, Huynh Anh N.; Im, Myungshin; Chang, Seunghyuk; Yu, Joonkyu

    2016-01-01

    The RGB Bayer filter system consists of a mosaic of R, G , and B filters on the grid of the photo sensors which typical commercial DSLR (Digital Single Lens Reflex) cameras and CCD cameras are equipped with. Lot of unique astronomical data obtained using an RGB Bayer filter system are available, including transient objects, e.g. supernovae, variable stars, and solar system bodies. The utilization of such data in scientific research requires that reliable photometric transformation methods are available between the systems. In this work, we develop a series of equations to convert the observed magnitudes in the RGB Bayer filter system (RB,GB , and BB) into the Johnson-Cousins BVR filter system (BJ,VJ , and RC). The new transformation equations derive the calculated magnitudes in the Johnson-Cousins filters (BJcal,VJcal , and RCcal) as functions of RGB magnitudes and colors. The mean differences between the transformed magnitudes and original magnitudes, i.e. the residuals, are Δ (BJ -BJcal) = 0.064 mag, Δ (VJ -VJcal) = 0.041 mag, and Δ (RC -RCcal) = 0.039 mag. The calculated Johnson-Cousins magnitudes from the transformation equations show a good linear correlation with the observed Johnson-Cousins magnitudes.

  5. 78 FR 19017 - Manufacturer of Controlled Substances; Notice of Application; Johnson Matthey Pharmaceutical...

    Science.gov (United States)

    2013-03-28

    ... Pharmaceutical Materials, Inc. Pursuant to Sec. 1301.33(a), Title 21 of the Code of Federal Regulations (CFR), this is notice that on November 15, 2012, Johnson Matthey Pharmaceutical Materials, Inc., Pharmaceutical Service, 25 Patton Road, Devens, Massachusetts 01434, made application by renewal to the...

  6. Income and Democracy: A Comment on Acemoglu, Johnson, Robinson, and Yared (2008)

    DEFF Research Database (Denmark)

    Paldam, Martin; Gundlach, Erich

    Acemoglu, Johnson, Robinson, and Yared (2008) demonstrate that estimation of the standard adjustment model with country-fixed and time-fixed effects removes the statistical significance of income as a causal factor of democracy. We argue that their empirical approach must produce insignificant...

  7. Income and Democracy: A Comment on Acemoglu, Johnson, Robinson, and Yared (2008)

    DEFF Research Database (Denmark)

    Paldam, Martin; Gundlach, Erich

    Acemoglu, Johnson, Robinson, and Yared (2008) demonstrate that estimation of the standard adjustment model with country-fixed and time-fixed effects removes the statistical significance of income as a causal factor of democracy. We argue that their empirical approach must produce insignificant...

  8. Ben Johnson and Social Studies Teaching--Classroom Use of Current Social Issues.

    Science.gov (United States)

    Sears, Alan

    1989-01-01

    Suggests steps for approaching discussion of controversial issues in the classroom, using the scandal of Canadian Olympian sprinter Ben Johnson as an example. Recommends the reflective inquiry approach, which necessitates framing the problem in relationship to student age, and with attention to the information available about the problem. (LS)

  9. Evaluation Policy in a Nonprofit Foundation: A Case Study Exploration of the Robert Wood Johnson Foundation

    Science.gov (United States)

    Dillman, Lisa M.; Christie, Christina A.

    2017-01-01

    This study explores the relationship between evaluation policies and evaluation practice. Through document analysis, interviews, and a multiple case study, the research examined the explicit and implicit policies overarching the evaluation work commissioned by the Robert Wood Johnson Foundation (RWJF) and explored how these policies are…

  10. Invariance of Woodcock-Johnson III Scores for Students with Learning Disorders and Students without Learning Disorders

    Science.gov (United States)

    Benson, Nicholas; Taub, Gordon E.

    2013-01-01

    The purpose of this study was to test the invariance of scores derived from the Woodcock-Johnson III Tests of Cognitive Ability (WJ III COG) and Woodcock-Johnson III Tests of Academic Achievement (WJ III ACH) across a group of students diagnosed with learning disorders (n = 994) and a matched sample of students without known clinical diagnoses (n…

  11. Investigation of Monnose-Binding Lectin gene Polymorphism in Patients with Erythema Multiforme, Stevens-Johnson Syndrome and Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis Overlap Syndrome

    Directory of Open Access Journals (Sweden)

    Sevil Toka

    2012-09-01

    Full Text Available Objective: Monnose-Binding lectin (MBL appears to play an important role in the immune system. The genetic polymorphisms in the MBL2 gene can result in a reduction of serum levels, leading to a predisposition to recurrent infection. The aim of this study is to investigate the influence of a polymorphism in codon 54 of the MBL2 gene on the susceptibility to Erythema Multiforme, Stevens-Johnson Syndrome and Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis Overlap Syndrome (EM, SJS and SJS/TEN overlap syndrome. Material and Methods: Our study included 64 patients who were clinically and/or histopathologically diagnosed with EM, SJS, and SJS/TEN overlap syndrome and 66 healthy control subjects who were genotyped for the MBL2 gene codon 54 polymorphism using the PCR-RFLP method. For all statistical analyses, the level of significance was set at p<0.05. Results: The prevalence of the B allele was 18% in the EM, SJS and SJS/TEN patient groups and 13% in the control group. No significant differences in allele frequencies of any polymorphism were observed between the patient and control groups, although the B allele was more frequent in the patient groups (p=0.328.Conclusion: Our results provide no evidence of a relationship between MBL2 gene codon 54 polymorphism and the susceptibility to EM, SJS and SJS/TEN overlap syndrome. However, these findings should be confirmed in studies with a larger sample size.

  12. Design as dream and self-representation: Philip Johnson and the Glass House of Atreus.

    Science.gov (United States)

    Tutter, Adele

    2011-06-01

    Philip Johnson's masterpiece--the Glass House--is compared to a dream and conceptualized as containing encrypted and embedded representations of the self. Freud's masterpiece--The Interpretation of Dreams--is the theoretical and methodological model for this approach to design-as-dream. Drawing on Johnson's words and forms set in biographical, historical, and cultural context, interpretive paths are traced from manifest design elements of the Glass House to overdetermined latent meanings, yielding new and surprising insights into the Glass House, its elusive architect, and the process of its design. A mirror that reflects an image, a lens that focuses it, and a prism that reveals its components, the Glass House turns a lucid eye onto its maker.

  13. Concurrence of Stevens-Johnson Syndrome and Bilateral Parotitis after Minocycline Therapy

    Directory of Open Access Journals (Sweden)

    Jimi Yoon

    2010-06-01

    Full Text Available Minocycline is an antibiotic of tetracycline derivatives that is commonly used in the treatment of moderate to severe acne vulgaris. It has been reported to cause rare adverse events from mild cutaneous eruption to severe forms including drug-induced lupus, serum sickness-like reaction, and hypersensitivity reactions, etc. The risks of adverse events attributed to minocycline have not been ascertained reliably and there are concerns about the safety of minocycline which could possibly result in life-threatening events such as the Stevens-Johnson syndrome. Here we demonstrate an unusual case of Stevens-Johnson syndrome in conjunction with bilateral parotitis after the intake of minocycline in a Korean boy suggesting discreet use of the drug.

  14. Stunted root development: A rare dental complication of Stevens-Johnson syndrome

    Science.gov (United States)

    Sangwan, Aditi; Sangwan, Pankaj; Dahiya, Parveen

    2016-01-01

    Stevens-Johnson syndrome (SJS) is a severe cutaneous reaction seen rarely in clinical practice. Most often, it occurs as an adverse reaction to certain drugs. When it affects children at a very young age, arrested tooth root development may also be seen. We present a case of a 13 year old boy who suffered from SJ syndrome at the age of 7 years. Incomplete root development was observed in all teeth, as demonstrated by panaromic radiography. Clinical features of this condition and its management are further discussed. We aim to emphasise on the need for dental practitioners to be aware of the potential dental complications of SJS and enable them to recognise and manage the condition at the earliest so as to avoid any undesirable sequelae. Key words:Adverse drug reaction, amoxycillin, arrested root development, Stevens-Johnson syndrome. PMID:27703617

  15. A Fifty-Year Love Affair with Organic Chemistry (by William S. Johnson)

    Science.gov (United States)

    Kauffman, Reviewed By George B.; Kauffman, Laurie M.

    1999-12-01

    This latest volume is the 20th in Jeff Seeman's projected 22-volume series of autobiographies of 20th-century organic chemists that began publication in 1990 (Kauffman, G. B. J. Chem. Educ. 1991, 68, A21). Unfortunately, Johnson did not live to see this volume in print. Ted Bartlett and Ray Conrow reviewed the final manuscript, galleys, and page proofs; and Ted Bartlett, Paul Bartlett, John D. Roberts, and Gilbert Stork contributed an epilogue that complements Johnson's own words, adds a warm, personal final touch that he was unable to provide, and incorporates his final research into the volume. Born in New Rochelle, New York, on February 24, 1913, William Summer Johnson attended Amherst College with the aid of a scholarship and various odd jobs such as tending furnace, washing dishes, and playing saxophone in dance bands (he seriously considered becoming a professional musician). Here he became enamored with organic chemistry, which he taught as an instructor for a year after his graduation magna cum laude in 1936. He then worked with a fellowship under Louis Fieser, who sparked his interest in steroids, at Harvard University, from which he received his M.A. (1938) and Ph.D. (1940) degrees. In 1940 Johnson joined the faculty at the University of Wisconsin, where he rose through the ranks, eventually becoming Homer Adkins Professor of Chemistry (1954-60). He began the total synthesis of steroids, the main subject of his life's work, "which soon proved to be the hottest synthetic target of the time". In 1960 he accepted an invitation to become head of and to upgrade the Stanford University Chemistry Department. With faculty recruiting as his primary concern, he was able to add Carl Djerassi, Paul J. Flory, Harden M. McConnell, Henry Taube, and Eugene E. van Tamelen to the department, resulting in its spectacular rise from 15th to 5th place in the nation. He remained at Stanford for the rest of his career, serving as department head for nine years. He died at the

  16. Water quality of streams in Johnson County, Kansas, 2002-07

    Science.gov (United States)

    Rasmussen, T.J.

    2009-01-01

    Water quality of streams in Johnson County, Kansas was evaluated from October 2002 through December 2007 in a cooperative study between the U.S. Geological Survey and the Johnson County Stormwater Management Program. Water quality at 42 stream sites, representing urban and rural basins, was characterized by evaluating benthic macroinvertebrates, water (discrete and continuous data), and/or streambed sediment. Point and nonpoint sources and transport were described for water-quality constituents including suspended sediment, dissolved solids and major ions, nutrients (nitrogen and phosphorus), indicator bacteria, pesticides, and organic wastewater and pharmaceutical compounds. The information obtained from this study is being used by city and county officials to develop effective management plans for protecting and improving stream quality. This fact sheet summarizes important results from three comprehensive reports published as part of the study and available on the World Wide Web at http://ks.water.usgs.gov/Kansas/studies/qw/joco/. ?? 2009 ASCE.

  17. An evaluation of the Johnson-Cook model to simulate puncture of 7075 aluminum plates.

    Energy Technology Data Exchange (ETDEWEB)

    Corona, Edmundo; Orient, George Edgar

    2014-02-01

    The objective of this project was to evaluate the use of the Johnson-Cook strength and failure models in an adiabatic finite element model to simulate the puncture of 7075- T651 aluminum plates that were studied as part of an ASC L2 milestone by Corona et al (2012). The Johnson-Cook model parameters were determined from material test data. The results show a marked improvement, in particular in the calculated threshold velocity between no puncture and puncture, over those obtained in 2012. The threshold velocity calculated using a baseline model is just 4% higher than the mean value determined from experiment, in contrast to 60% in the 2012 predictions. Sensitivity studies showed that the threshold velocity predictions were improved by calibrating the relations between the equivalent plastic strain at failure and stress triaxiality, strain rate and temperature, as well as by the inclusion of adiabatic heating.

  18. Using Johnson Distribution for Automatic Threshold Setting in Wind Turbine Condition Monitoring System

    DEFF Research Database (Denmark)

    Marhadi, Kun Saptohartyadi; Skrimpas, Georgios Alexandros

    2014-01-01

    not rep- resent the whole operating conditions of a turbine, which re- sults in uncertainty in the parameters of the fitted probabil- ity distribution and the thresholds calculated. In this study Johnson distribution is used to identify shape, location, and scale parameters of distribution that can best...... the underlying probability distribution that describes the data is not known. Choosing an incorrect distribution to describe the data and then setting up thresholds based on the chosen distribution could result in sub-optimal thresholds. Moreover, in wind turbine applications the collected data available may...... fit vibration data. This study shows that using Johnson distribution can elim- inate testing or fitting various distributions to the data, and have more direct approach to obtain optimal thresholds. To quantify uncertainty in the thresholds due to limited data, im- plementations with bootstrap method...

  19. Preservation Methods Utilized for Space Food

    Science.gov (United States)

    Vodovotz, Yael; Bourland, Charles

    2000-01-01

    Food for manned space flight has been provided by NASA-Johnson Space Center since 1962. The various mission scenarios and space craft designs dictated the type of food preservation methodologies required to meet mission objectives. The preservation techniques used in space flight include freeze-dehydration, thermostabilization, irradiation, freezing and moisture adjustment. Innovative packaging material and techniques enhanced the shelf-stability of the food items. Future space voyages may include extended duration exploration missions requiring new packaging materials and advanced preservation techniques to meet mission goals of up to 5-year shelf-life foods.

  20. MODIFIED MASTERS JOHNSON TECHNIQUE IN THE TREATMENT OF SEXUAL INADEQUACY IN MALES

    OpenAIRE

    1989-01-01

    SUMMARY 21 married men were treated for erectile defect and premature ejaculation (both primary & secondary) by modified Masters-Johnson technique. 16(76.2%) recovered. The success rate was higher in secondary cases (83.3%). Best results were obtained in 30—39 yrs age group. The modified technique has been described in detail. Factors favourable and unfavourable for success have been discussed.

  1. Steven's Johnson syndrome with toxic epidermal necrolysis due to thalidomide in a case of multiple myeloma.

    Science.gov (United States)

    Das, Anupam; Sil, Amrita; Mishra, Vivek; Das, Nilay Kanti

    2014-01-01

    Thalidomide developed in 1954 for morning sickness had proven to be a teratogen and hence was withdrawn from market. Resurgence of thalidomide began as an immunomodulator when it was shown to be effective in the management of multiple myeloma and many conditions like erythema nodosum leprosum, graft versus host disease, recurrent aphthous ulcers etc. We report a case of Stevens Johnson syndrome-toxic epidermal necrolysis developing in an elderly male who was prescribed thalidomide after being diagnosed with multiple myeloma.

  2. Institutionalism and culture in strategies of multinational firms: the case of Johnson controls Inc.

    Directory of Open Access Journals (Sweden)

    José G. Vargas-Hernández

    2013-07-01

    Full Text Available The aim of this paper is to analyze both the internal and external aspects that may pose a risk to the operations of the subsidiaries of the multinational Johnson Controls Inc. in the U.S. and Mexico from an institutional point of view. The main challenges are the impact in the achievement of goals both of workers and of the same organization and the influence institutions have on the organizational environment, for the decommissioning of some branch/ subsidiary.

  3. Stormwater Runoff: What it is and Why it is Important in Johnson County, Kansas

    Science.gov (United States)

    Rasmussen, Teresa J.; Schmidt, Heather C.

    2009-01-01

    Stormwater runoff is a leading contributor to pollution in streams, rivers, and lakes in Johnson County, Kansas, and nationwide. Because stormwater runoff contains pollutants from many different sources, decreasing pollution from stormwater runoff is a challenging task. It requires cooperation from residents, businesses, and municipalities. An important step in protecting streams from stormwater pollution is understanding watershed processes, stormwater characteristics, and their combined effects on streams and water quality.

  4. Ultrastructure of Kupffer cells and hepatocytes in the Dubin-Johnson syndrome: A case report

    OpenAIRE

    Sobaniec-Lotowska, Maria Elzbieta; Lebensztejn, Dariusz Marek

    2006-01-01

    Ultrastructure of Kupffer cells and hepatocytes in liver bioptate was evaluated in a 17-year-old boy with Dubin–Johnson syndrome (DJS). The liver tissue obtained by needle biopsy was fixed in glutaraldehyde and paraformaldehyde and routinely processed for electron microscopic analysis. The ultrastructural examinations of liver bioptate revealed the accumulation of membrane-bound, electron-dense lysosomal granules within the cytoplasm of hepatocytes, characteristic of DJS. They were located ma...

  5. Stevens-Johnson syndrome following use of metronidazole in a dental patient

    Directory of Open Access Journals (Sweden)

    Goutameswar Mazumdar

    2014-01-01

    Full Text Available Metronidazole alone rarely causes Stevens-Johnson syndrome (SJS. We present a case of an elderly male patient who, following metronidazole use, developed neurological symptoms followed by pain and blisters on both soles, erythema of face and neck, scrotal itching and erosion, and hemorrhagic encrustation around the lips and oral mucous membrane. Initial neurological symptoms followed by mucocutaneous manifestation of SJS following metronidazole use is probably a new presentation of this case.

  6. L'amministrazione Johnson e le origini della distensione. 1964-1968

    OpenAIRE

    Bacchitta, Sandra

    2014-01-01

    La tesi analizza una parte della politica estera dell’amministrazione Johnson, e più specificamente l’avvio del dialogo con l’Urss in materia di non proliferazione e controllo degli armamenti e la revisione della China policy, inquadrando entrambe nell’adattamento della cold war strategy all’evoluzione sistema internazionale, argomentando che la distensione intesa come rilassamento delle tensioni e ricerca di terreno comune per il dialogo, fosse perlomeno uno degli strumenti politici che l’am...

  7. Síndrome de Stevens-Johnson: Presentación de 1 caso

    Directory of Open Access Journals (Sweden)

    Luisa María Pacheco Álvarez

    2001-12-01

    Full Text Available El síndrome de Stevens-Johnson, es una enfermedad inflamatoria aguda, originada por una hipersensibilidad, que incluye la piel y las membranas mucosas; en una forma mayor pone en peligro la vida del paciente. Puede ser inducida por muchos factores precipitantes, desde los medicamentos hasta una infección. La afección se caracteriza por una súbita erupción morfológicamente variable, acompañada de estomatitis y oftalmia. En este trabajo se presenta un niño de 8 años de edad, con la entidad clínica en forma muy severa, el síndrome de Stevens-Johnson, que involucra manifestaciones cutáneas, oculares y de la mucosa oral, acompañada de otras complicaciones graves, por lo que requirió terapéutica en cuidados intensivos, y se logró una evolución satisfactoria del paciente.Stevens-Johnson syndrome is an acute inflammatory disease caused by a hypersensibility that includes the skin and the mucous membranes and that in a severe form endangers the patient’s life. It may be induced by many precipitating factors, from drugs to infection. The affection is characterized by a sudden morphologically variable rash, accompanied with stomatitis and ophthalmia. An 8-year-old boy suffering from this clinical entity in a very severe form, Stevens-Johnson syndrome, with skin , ocular and oral mucosa manifestations and with other serious complications, is presented in this paper. He had to be treated at the ICU and a satisfactory evolution was attained.

  8. Stevens-Johnson syndrome limited to multiple sites of radiation therapy in a patient receiving phenobarbital.

    Science.gov (United States)

    Duncan, K O; Tigelaar, R E; Bolognia, J L

    1999-03-01

    Stevens-Johnson syndrome (SJS) is a severe cutaneous eruption that most often appears as an adverse reaction to a medication. There have been 21 reported cases of atypical erythema multiforme, toxic epidermal necrolysis, and SJS arising in patients receiving radiation therapy in addition to phenytoin, phenobarbital, or carbamazepine. We report the second case of SJS resulting from concomitant phenobarbital and radiation therapy, in which the eruption was limited to the sites of radiation, which were multiple.

  9. Amoxycillin and clavulanic acid induced Stevens-Johnson syndrome: a case report

    Directory of Open Access Journals (Sweden)

    Ravi Shankar Manchukonda

    2016-06-01

    Full Text Available Stevens-Johnson syndrome (SJS is an immune complex mediated hypersensitivity complex that typically involves the skin and the mucous membranes. Various etiologic factors (e.g., infection, drugs and malignancies have been implicated as causes of Stevens-Johnson syndrome. However, as many as half of the cases are idiopathic. Bastuji and Roujeau proposed that the denomination of Stevens-Johnson syndrome should be used for a syndrome characterized by mucous membrane erosions and widespread small blisters that arise on erythematous or purpuric maculae that are different from classic targets. In this case report, a 6 year old girl who was administered a cough syrup (containing bromhexine, guaiphenesin, diphenhydramine and phenylephrine and amoxycillin and clavulanic acid dispersible tablet for the treatment of cough developed pruritic skin eruptions all over the body along with painful erosions on the tongue, buccal mucosa, genital and anal mucosa. A diagnosis of Stevens-Johnson syndrome was made. Amoxycillin and clavulanic acid combination was identified as the culprit based on the temporal relationship between the drug administration and the appearance of the rashes and based on a number of SJS reports implicating amoxycillin and clavulanic acid having been published before. The cough syrup and amoxycillin and clavulanic acid combination tablets were immediately stopped. Symptomatic treatment was administered. The child improved and was later discharged. Causality assessment using Naranjo adverse drug reaction probability scale revealed that amoxycillin and clavulanic acid combination was a possible cause for the harmful cutaneous adverse reaction with a score of 4. [Int J Basic Clin Pharmacol 2016; 5(3.000: 1140-1144

  10. Security for safety critical space borne systems

    Science.gov (United States)

    Legrand, Sue

    1987-01-01

    The Space Station contains safety critical computer software components in systems that can affect life and vital property. These components require a multilevel secure system that provides dynamic access control of the data and processes involved. A study is under way to define requirements for a security model providing access control through level B3 of the Orange Book. The model will be prototyped at NASA-Johnson Space Center.

  11. Role of secondary metabolites of wild marigold in suppression of Johnson grass and Sun spurge

    Institute of Scientific and Technical Information of China (English)

    Sehrish; Sadia; Rahmatullah; Qureshi; Shahida; Khalid; Brian; Gagosh; Nayyar; Jin-tun; Zhang

    2015-01-01

    Objective: To analyze the wild marigold [(Tagetes minuta L.)(T. minuta)] leaf extract with respect to phytochemicals and allelopathic activity. Methods: The aqueous extracts of T. minuta leaves at concentrations of 50%, 75% and 100% were prepared. Preliminary phytochemical analysis was carried out and then allelopathic ef ect of T. minuta on root length, shoot length, germination, fresh and dry weight of Johnson grass and Sun spurge was tested on i lter paper and in soil.Results: Qualitative phytochemical analysis showed the presence of alkaloids, tannins, saponins, l avonoides and terpenoids. The higher concentrations proved to be signii cantly ef ective in reducing almost all the parameters of Sun spurge and Johnson grass in i lter paper bioassay. Supplemented with the soil, all concentrations of leaf extract showed reduction in germination, root and shoot growth, fresh and dry weight of Sun spurge; however, 100% concentration signii cantly reduced the germination of Johnson grass. Conclusions: This study suggests that marigold allelochemicals can be used as an integrated weed management for the production of better crop yield.

  12. [Stevens-Johnson syndrome plus intrahepatic cholestasis caused by clindamycin or chlorpheniramine].

    Science.gov (United States)

    Sahagún Flores, J E; Soto Ortiz, J A; Tovar Méndez, C E; Cárdenas Ochoa, E C; Hernández Flores, G

    2009-05-15

    A 48-year-old woman was hospitalized with the diagnosis of hepatitis. She presented with symptoms of jaundice, headache, elevated bilirubin, and elevated hepatic enzymes. She related a recent episode of a bronchial infection that was treated during the previous eight days with paracetamol (500mg, 2 doses only), chlorpheniramine, betamethasone and clindamycin. After an initial clinical and laboratorial improvement, she began to complain of pruritus of the palms and soles. Thereafter, vesicles evolving to blisters developed and a deterioration of her general health ensued. Serologies for hepatitis A, B, and C viruses were negative. Intrahepatic cholestasis and Stevens Johnson Syndrome (SJS) were the final diagnosis. The association of the Stevens Johnson Syndrome and intrahepatic cholestasis simultaneously, related to adverse drug reactions, is very rare. The drugs reportedly involved are mainly antibiotics, such as ampicillin, vancomycin, amoxicillin/clavulinic acid and erythromycin. Other drugs involved are non-steroidal anti-inflamatory drugs, such as mefenamic acid, ibuprofen, and sulindac. The reactions can be minor or severe and can even cause death, an outcome that has been reported in patients of all races and ethnic groups, but appears to be more rare in patients of Latin origin. We present a discussion of this case and review the main characteristics of the Stevens Johnson Syndrome.

  13. Role of secondary metabolites of wild marigold in suppression of Johnson grass and Sun spurge

    Institute of Scientific and Technical Information of China (English)

    Sehrish Sadia; Rahmatullah Qureshi; Shahida Khalid; Brian Gagosh Nayyar; Jin-tun Zhang

    2015-01-01

    To analyze the wild marigold [(Tagetes minuta L.) (T. minuta)] leaf extract with respect to phytochemicals and allelopathic activity. Methods: The aqueous extracts of T. minuta leaves at concentrations of 50%, 75% and 100%were prepared. Preliminary phytochemical analysis was carried out and then allelopathic effect of T. minuta on root length, shoot length, germination, fresh and dry weight of Johnson grass and Sun spurge was tested on filter paper and in soil. Results: Qualitative phytochemical analysis showed the presence of alkaloids, tannins, saponins, flavonoides and terpenoids. The higher concentrations proved to be significantly effective in reducing almost all the parameters of Sun spurge and Johnson grass in filter paper bioassay. Supplemented with the soil, all concentrations of leaf extract showed reduction in germination, root and shoot growth, fresh and dry weight of Sun spurge; however, 100%concentration significantly reduced the germination of Johnson grass. Conclusions: This study suggests that marigold allelochemicals can be used as an integrated weed management for the production of better crop yield.

  14. Zero-point term and quantum effects in the Johnson noise of resistors: a critical appraisal

    Science.gov (United States)

    Kish, Laszlo B.; Niklasson, Gunnar A.; Granqvist, Claes G.

    2016-05-01

    There is a longstanding debate about the zero-point term in the Johnson noise voltage of a resistor. This term originates from a quantum-theoretical treatment of the fluctuation-dissipation theorem (FDT). Is the zero-point term really there, or is it only an experimental artifact, due to the uncertainty principle, for phase-sensitive amplifiers? Could it be removed by renormalization of theories? We discuss some historical measurement schemes that do not lead to the effect predicted by the FDT, and we analyse new features that emerge when the consequences of the zero-point term are measured via the mean energy and force in a capacitor shunting the resistor. If these measurements verify the existence of a zero-point term in the noise, then two types of perpetual motion machines can be constructed. Further investigation with the same approach shows that, in the quantum limit, the Johnson-Nyquist formula is also invalid under general conditions even though it is valid for a resistor-antenna system. Therefore we conclude that in a satisfactory quantum theory of the Johnson noise, the FDT must, as a minimum, include also the measurement system used to evaluate the observed quantities. Issues concerning the zero-point term may also have implications for phenomena in advanced nanotechnology.

  15. Drug Information in Space Medicine

    Science.gov (United States)

    Bayuse, Tina M.

    2009-01-01

    Published drug information is widely available for terrestrial conditions. However, information on dosing, administration, drug interactions, stability, and side effects is scant as it relates to use in Space Medicine. Multinational crews on board the International Space Station present additional challenges for drug information because medication nomenclature, information available for the drug as well as the intended use for the drug is not standard across countries. This presentation will look at unique needs for drug information and how the information is managed in Space Medicine. A review was conducted of the drug information requests submitted to the Johnson Space Center Pharmacy by Space Medicine practitioners, astronaut crewmembers and researchers. The information requested was defined and cataloged. A list of references used was maintained. The wide range of information was identified. Due to the information needs for the medications in the on-board medical kits, the Drug Monograph Project was created. A standard method for answering specific drug information questions was generated and maintained by the Johnson Space Center Pharmacy. The Drug Monograph Project will be presented. Topic-centered requests, including multinational drug information, drug-induced adverse reactions, and medication events due to the environment will be highlighted. Information management of the drug information will be explained. Future considerations for drug information needs will be outlined.

  16. Mida andis teile Tallinna ülikooli suvekoolis osalemine? / Ipios Nikos, Cheryl Johnson, Jevgenijs Kaktinš...[jt.

    Index Scriptorium Estoniae

    2010-01-01

    Küsimusele vastasid arst Ipios Nikos, luteri-anglikaani vaimulik, arheoloog Cheryl Johnson, ökonomist Jevgenijs Kaktinš, filosoofia magistrant Gabriele Avincola ja filosoofia üliõpilane Kaia Otstak

  17. Mida andis teile Tallinna ülikooli suvekoolis osalemine? / Ipios Nikos, Cheryl Johnson, Jevgenijs Kaktinš...[jt.

    Index Scriptorium Estoniae

    2010-01-01

    Küsimusele vastasid arst Ipios Nikos, luteri-anglikaani vaimulik, arheoloog Cheryl Johnson, ökonomist Jevgenijs Kaktinš, filosoofia magistrant Gabriele Avincola ja filosoofia üliõpilane Kaia Otstak

  18. Curiosity, Hope, and Vision: The Role of the Robert Wood Johnson Foundation's Pioneer Portfolio in Funding Early Health Game Research.

    Science.gov (United States)

    Tarini, Paul

    2012-02-01

    Games for Health Journal Editor Bill Ferguson recently discussed The Robert Wood Johnson Foundation's important role in funding health game research with Paul Tarini, Senior Program Officer for the Foundation's Pioneer Portfolio.

  19. Commentary on Adele Tutter's "Design as dream and self-representation: Philip Johnson and the Glass House of Atreus".

    Science.gov (United States)

    Danze, Elizabeth A; Sonnenberg, Stephen M

    2012-06-01

    In this discussion of Adele Tutter's "Design as Dream and Self-Representation: Philip Johnson and the Glass House of Atreus" (JAPA 59/3), the architect Elizabeth Danze and the psychoanalyst Stephen Sonnenberg highlight what they see as the most important of Tutter's contributions as regards an understanding of Johnson's work. They then discuss those contributions as they illuminate the study of the relationship of architecture and design, on the one hand, and psychoanalysis on the other.

  20. Space shuttle crew training at CERN

    CERN Multimedia

    Paola Catapano

    From 13 to 16 October, the crew of NASA Space Shuttle mission STS-134 came to CERN for a special physics training programme. Invited here by Samuel Ting, they will deliver the Alpha Magnetic Spectrometer (AMS) detector to the International Space Station (ISS).   The STS134 crew in the Lodge at the Aiguille du Midi wearing CERN fleeces. From left to right: Captain Mark Kelly, US Navy; Pilot Gregory Johnson, USAF ret.; Mission Specialist Andrew Feustel; Mission Specialist Mike Fincke, USAF, Mission Specialist Gregory Chamitoff and Mission Specialist Roberto Vittori, ESA and Italian Air Force. Headed by Commander Mark Kelly, a US Navy captain, the crew included pilot Gregory Johnson, a US Air Force (USAF) colonel, and mission specialists Mike Fincke (also a USAF Colonel), Andrew Feustel, and Gregory Chamitoff of NASA, as well as Colonel Roberto Vittori of the European Space Agency (ESA). Two flight directors, Gary Horlache and Derek Hassmann of NASA, and the engineer responsible for the Ext...

  1. Supplemental site inspection for Air Force Plant 59, Johnson City, New York, Volume 1: Investigation report

    Energy Technology Data Exchange (ETDEWEB)

    Nashold, B.; Rosenblatt, D.; Hau, J. [and others

    1995-08-01

    This summary describes a Supplemental Site Inspection (SSI) conducted by Argonne National Laboratory (ANL) at Air Force Plant 59 (AFP 59) in Johnson City, New York. All required data pertaining to this project were entered by ANL into the Air Force-wide Installation Restoration Program Information System (IRPIMS) computer format and submitted to an appropriate authority. The work was sponsored by the United States Air Force as part of its Installation Restoration Program (IRP). Previous studies had revealed the presence of contaminants at the site and identified several potential contaminant sources. Argonne`s study was conducted to answer questions raised by earlier investigations.

  2. Forest inventory: Peter T. Johnson Wildlife Mitigation Unit, Craig Mountain, Idaho. Final Report.

    Energy Technology Data Exchange (ETDEWEB)

    Narolski, Steven W.

    1996-12-01

    The primary objective of this report is to determine the quantity and quality of existing forest habitat types on the 59,991-acre Peter T. Johnson Wildlife Mitigation Unit (WMU). Products from this effort include a description of the ecological condition, a map of habitat types, and an inventory of forest resources on the WMU lands. The purpose of this and other resource inventories (plant and wildlife) is to assess the current resources condition of the WMU and to provide necessary information to generate a long-term management for this area.

  3. Generalized Kirchhoff-Law-Johnson-Noise (KLJN) secure key exchange system using arbitrary resistors

    CERN Document Server

    Vadai, Gergely; Gingl, Zoltan

    2015-01-01

    The Kirchhoff-Law-Johnson-Noise (KLJN) secure key exchange system has been introduced as a simple, very low cost and efficient classical physical alternative to quantum key distribution systems. The ideal system uses only a few electronic components - identical resistor pairs, switches and interconnecting wires - to guarantee perfectly protected data transmission. We show that a generalized KLJN system can provide unconditional security even if it is used with significantly less limitations. The more universal conditions ease practical realizations considerably and support more robust protection against attacks. Our theoretical results are confirmed by numerical simulations.

  4. Dubin-Johnson syndrome with systemic lupus erythematosus:a case report

    Institute of Scientific and Technical Information of China (English)

    Mamun-Al Mahtab; Md. Fazal Karim; Salimur Rahman; Abul Barkat Muhammad Adnan

    2006-01-01

    BACKGROUND:Dubin-Johnson syndrome (DJS) is a rare clinical entity. We describe a case of DJS complicated by systemic lupus erythematosus (SLE). METHODS:A case of congenital hyperbilirubinemia with SLE was evaluated systematically including review of history, physical examination for the stigmata of chronic liver disease, and other investigations. RESULT:Liver biopsy revealed a black liver with preserved architecture suggestive of DJS. CONCLUSIONS:SLE may develop in DJS. The relationship between DJS and SLE in this case is most likely a chance occurrence.

  5. Neonatal Dubin-Johnson syndrome: novel compound heterozygous mutation in the ABCC2 gene.

    Science.gov (United States)

    Okada, Hitoshi; Kusaka, Takashi; Fuke, Noriko; Kunikata, Jun; Kondo, Sonoko; Iwase, Takashi; Nan, Wang; Hirota, Takeshi; Ieiri, Ichiro; Itoh, Susumu

    2014-10-01

    Dubin-Johnson syndrome (DJS) is an autosomal recessive inherited disorder characterized by conjugated hyperbilirubinemia. Neonatal-onset DJS is rare. It is caused by dysfunction of adenosine triphosphate-binding cassette, sub-family C, member 2 (ABCC2). We found a novel compound heterozygous mutation of DJS-related gene: W709R (T2145C): a missense mutation in exon 17, and R768W (C2302T), a missense mutation in exon 18. Serum diglucuronosyl bilirubin/monoglucuronosyl bilirubin ratio was high. ABCC2 may excrete diglucuronosyl bilirubin preferentially over monoglucuronosyl bilirubin.

  6. Information theoretically secure, enhanced Johnson noise based key distribution over the smart grid with switched filters.

    Science.gov (United States)

    Gonzalez, Elias; Kish, Laszlo B; Balog, Robert S; Enjeti, Prasad

    2013-01-01

    We introduce a protocol with a reconfigurable filter system to create non-overlapping single loops in the smart power grid for the realization of the Kirchhoff-Law-Johnson-(like)-Noise secure key distribution system. The protocol is valid for one-dimensional radial networks (chain-like power line) which are typical of the electricity distribution network between the utility and the customer. The speed of the protocol (the number of steps needed) versus grid size is analyzed. When properly generalized, such a system has the potential to achieve unconditionally secure key distribution over the smart power grid of arbitrary geometrical dimensions.

  7. A note on Johnson, Minkoff and Phillips' algorithm for the Prize-Collecting Steiner Tree Problem

    CERN Document Server

    Feofiloff, Paulo; Ferreira, Carlos E; de Pina, Jose Coelho

    2010-01-01

    The primal-dual scheme has been used to provide approximation algorithms for many problems. Goemans and Williamson gave a (2-1/(n-1))-approximation for the Prize-Collecting Steiner Tree Problem that runs in O(n^3 log n) time. it applies the primal-dual scheme once for each of the n vertices of the graph. Johnson, Minkoff and Phillips proposed a faster implementation of Goemans and Williamson's algorithm. We give a proof that the approximation ratio of this implementation is exactly 2.

  8. Nevirapine-induced Stevens-Johnson syndrome from a tertiary care hospital in Central India

    Directory of Open Access Journals (Sweden)

    Vandana Badar

    2014-04-01

    Full Text Available A 42 year old man, a known case of AIDS receiving antiretroviral therapy – stavudine, lamivudine, and nevirapine since 4 weeks, was admitted with erythematous rash, with blisters, and abnormal liver function test. A diagnosis of Steven-Johnson syndrome was made excluding other opportunistic infection and differential diagnosis. Nevirapine was discontinued until the patient recovered. After recovery patient was started with stavudine, lamivudine, and efavirenz treatment without re-challenge with nevirapine. [Int J Basic Clin Pharmacol 2014; 3(2.000: 408-409

  9. On the security of the Kirchhoff-law-Johnson-noise (KLJN) communicator

    Science.gov (United States)

    Kish, Laszlo B.; Granqvist, Claes G.

    2014-10-01

    A simple and general proof is given for the information theoretic (unconditional) security of the Kirchhoff-law-Johnson-noise key exchange system under practical conditions. The unconditional security for ideal circumstances, which is based on the second law of thermodynamics, is found to prevail even under slightly non-ideal conditions. This security level is guaranteed by the continuity of functions describing classical physical linear, as well as stable non-linear, systems. Even without privacy amplification, Eve's probability for successful bit guessing is found to converge toward 0.5—i.e., the perfect security level—when ideal conditions are approached.

  10. Peristaltic flow of a Johnson-Segalman fluid through a deformable tube

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Yongqi [Darmstadt University of Technology, Department of Mechanical Engineering, Darmstadt (Germany); Universitaet fuer Bodenkultur, Institute of Geotechnical Engineering, Vienna (Austria); Hayat, Tasawar [Quaid-i-Azam University, Mathematics Department, Islamabad (Pakistan); Hutter, Kolumban [ETH Zuerich, VAW, Zuerich (Switzerland)

    2007-09-15

    To understand theoretically the flow properties of physiological fluids we have considered as a model the peristaltic motion of a Johnson-Segalman fluid in a tube with a sinusoidal wave traveling down its wall. The perturbation solution for the stream function is obtained for large wavelength and small Weissenberg number. The expressions for the axial velocity, pressure gradient, and pressure rise per wavelength are also constructed. The general solution of the governing nonlinear partial differential equation is given using a transformation method. The numerical solution is also obtained and is compared with the perturbation solution. Numerical results are demonstrated for various values of the physical parameters of interest. (orig.)

  11. Vanishing bile duct and Stevens-Johnson syndrome associated with ciprofloxacin treated with tacrolimus

    Institute of Scientific and Technical Information of China (English)

    Gokhan Okan; Serpil Yaylaci; Onder Peker; Sabahattin Kaymakoglu; Murat Saruc

    2008-01-01

    Stevens-Johnson syndrome (SJS) is a serious and potentially life-threatening disease. Vanishing bile duct syndrome (VBDS) is a rare cause of progressive cholestasis. Both syndromes are mostly related with drugs. We report a case of a patient withciprofloxacin-induced SJS and acute onset of VBDS,and reviewed the related literature. It is the first case of ciprofloxacin-induced VBDS successfully treatedwith tacrolimus. This case reminds physicians of the importance of drug reactions, their severity, techniques for diagnosis and methods of management.

  12. Nevirapine induced Stevens-Johnson syndrome in an HIV infected patient

    Directory of Open Access Journals (Sweden)

    Harminder Singh

    2011-01-01

    Full Text Available Nevirapine, a non-nucleoside reverse transcriptase inhibitor (NNRTI, is widely prescribed as a part of the combination therapy of human immunodeficiency virus (HIV infection because of its efficacy and good tolerability. Here, we report a case of Stevens-Johnson syndrome (SJS secondary to nevirapine. The patient had a diffuse, exfoliating exanthema with generalized bullous eruptions that involved the face, trunk and both extremities with elevated hepatic alanine aminotransferase and aspartate aminotransferase enzyme activities. The condition improved with stoppage of nevirapine-based highly active antiretroviral therapy (HAART regimen, so we attributed this adverse event to nevirapine. A strict vigilance of adverse drug reaction is required in HAART.

  13. Investigation of Integrated Subsurface Processing of Landfill Gas and Carbon Sequestration, Johnson County, Kansas

    Energy Technology Data Exchange (ETDEWEB)

    K. David Newell; Timothy R. Carr

    2007-03-31

    The Johnson County Landfill in Shawnee, KS is operated by Deffenbaugh Industries and serves much of metropolitan Kansas City. Refuse, which is dumped in large plastic-underlined trash cells covering several acres, is covered over with shale shortly after burial. The landfill waste, once it fills the cell, is then drilled by Kansas City LFG, so that the gas generated by anaerobic decomposition of the refuse can be harvested. Production of raw landfill gas from the Johnson County landfill comes from 150 wells. Daily production is approximately 2.2 to 2.5 mmcf, of which approximately 50% is methane and 50% is carbon dioxide and NMVOCs (non-methane volatile organic compounds). Heating value is approximately 550 BTU/scf. A upgrading plant, utilizing an amine process, rejects the carbon dioxide and NMVOCs, and upgrades the gas to pipeline quality (i.e., nominally a heating value >950 BTU/scf). The gas is sold to a pipeline adjacent to the landfill. With coal-bearing strata underlying the landfill, and carbon dioxide a major effluent gas derived from the upgrading process, the Johnson County Landfill is potentially an ideal setting to study the feasibility of injecting the effluent gas in the coals for both enhanced coalbed methane recovery and carbon sequestration. To these ends, coals below the landfill were cored and then were analyzed for their thickness and sorbed gas content, which ranged up to 79 scf/ton. Assuming 1 1/2 square miles of land (960 acres) at the Johnson County Landfill can be utilized for coalbed and shale gas recovery, the total amount of in-place gas calculates to 946,200 mcf, or 946.2 mmcf, or 0.95 bcf (i.e., 985.6 mcf/acre X 960 acres). Assuming that carbon dioxide can be imbibed by the coals and shales on a 2:1 ratio compared to the gas that was originally present, then 1682 to 1720 days (4.6 to 4.7 years) of landfill carbon dioxide production can be sequestered by the coals and shales immediately under the landfill. Three coal--the Bevier

  14. Carbamazepine-induced Stevens Johnson syndrome: a case series of three case reports

    Directory of Open Access Journals (Sweden)

    Arvind Kumar

    2015-08-01

    Full Text Available Carbamazepine is an iminostilbene derivative that was initially used as an antiepileptic but has been used with increased frequency for different indications including chronic pain, trigeminal neuralgia, and herpetic neuralgias. This has resulted in increased incidence of carbamazepine related adverse effects such as nausea, vomiting, and serious hematological toxicities such as aplastic anemia, agranulocytosis, eosinophilia, lymphadenopathy, and splenomegaly. Life-threatening hypersensitivity reactions such as Steven Johnson syndrome (SJS and toxic epidermal necrolysis can also occur. We hereby present a series of three cases that were prescribed carbamazepine for different indications and presented with SJS. [Int J Basic Clin Pharmacol 2015; 4(4.000: 797-801

  15. Peristaltic flow of Johnson-Segalman fluid in asymmetric channel with convective boundary conditions

    Institute of Scientific and Technical Information of China (English)

    H YASMIN; T HAYAT; A ALSAEDI; HH ALSULAMI

    2014-01-01

    This work is concerned with the peristaltic transport of the Johnson-Segalman fluid in an asymmetric channel with convective boundary conditions. The mathematical modeling is based upon the conservation laws of mass, linear momentum, and energy. The resulting equations are solved after long wavelength and low Reynolds number are used. The results for the axial pressure gradient, velocity, and temperature profiles are obtained for small Weissenberg number. The expressions of the pressure gra-dient, velocity, and temperature are analyzed for various embedded parameters. Pumping and trapping phenomena are also explored.

  16. Stevens-Johnson syndrome induced by methazolamide tablet%醋甲唑胺片致Stevens-Johnson 综合征

    Institute of Scientific and Technical Information of China (English)

    闫成; 薛洪源; 蔡长春

    2012-01-01

    One 33-year-old male patient with right eye injured was hospitalized and diagnosed with secondary glaucoma. Methazolamide tablets (25 mg, tid) were given to lower intraocular pressure for 10 days before surgery. After operation for 3 days, rashes developed on his face and neck and quickly spread over the entire body, it initially manifested as erythema and papule, itching obviously, followed by blisters, bullae and epidermal necrolysis. At the same time, mucous membrane lesions of his mouth, pharynx and eyes progressed rapidly with exudation, accompanied by fever, headache, fatigue and other symptoms. Considering drug-induced Stevens-Johnson syndrome, suspected drugs were withdrawn, after treatment with cetirizine hydrochloride dispersible tablets, methylprednisolone sodium succinate, human immunoglobulin and norvancomycin hydrochloride and so on, the rashes were alleviated markedly 3 weeks later.%1例33岁男性患者,因右眼被石头砸伤1d 入院,诊断为右眼钝挫伤、继发性青光眼.予以口服醋甲唑胺片25 mg,tid 降眼压治疗,10 d 后停药,行右眼巩膜下巩膜咬切术.术后第三日,患者出现面颈部皮疹,迅速波及全身,起初表现为红斑、丘疹,痒感明显,继而出现水疱、大疱、表皮松解剥脱,口腔、咽、眼黏膜受损、糜烂,伴渗出,同时存在高热、头痛、乏力等症状,考虑药源性Stevens-Johnson 综合征,停用可疑药物,给予盐酸西替利嗪分散片、甲泼尼龙琥珀酸钠、人免疫球蛋白、盐酸去甲万古霉素等治疗,3 周后,皮疹明显好转.

  17. Are steroids effective in toxic epidermal necrolysis and Stevens-Johnson syndrome?

    Directory of Open Access Journals (Sweden)

    Rodrigo Meza

    2017-06-01

    Full Text Available Resumen La necrólisis epidérmica tóxica y el síndrome de Stevens-Johnson son reacciones cutáneas adversas graves a medicamentos e infecciones. Los corticoides se describen como una alternativa terapéutica, sin embargo, su uso es aún controvertido. Utilizando la base de datos Epistemonikos, la cual es mantenida mediante búsquedas en múltiples bases de datos, identificamos cuatro revisiones sistemáticas que en conjunto incluyen once estudios primarios que responden la pregunta de interés. Extrajimos los datos y preparamos una tabla de resumen de los resultados utilizando el método GRADE. Concluimos que no está claro si los corticoides disminuyen la mortalidad o la estadía hospitalaria en la necrólisis epidérmica tóxica y el síndrome de Stevens-Johnson porque la certeza de la evidencia es muy baja.

  18. Tegafur/gimeracil/oteracil (TS-1 induced Stevens–Johnson syndrome: Case report

    Directory of Open Access Journals (Sweden)

    Satoko Minakawa

    2013-09-01

    Full Text Available TS-1 is an oral fluoropyrimidine anticancer drug that contains tegafur, gimeracil, and oteracil. A 78-year-old Japanese male who was diagnosed with carcinoma of the oral floor (rT4aN0M0 was prescribed a standard dose of TS-1 (80 mg/day. On Day 8 after administration of TS-1, an eruption developed. There was erythema, along with vesicles and erosions involving the lip, face, neck, trunk, limbs, and genitals. The drug-induced lymphocyte stimulation test (DLST for TS-1 was negative on the 23rd day, but positive on the 43rd day (20 days after discontinuing prednisolone. The condition was diagnosed as Stevens–Johnson syndrome due to TS-1 because of the clinical course and laboratory results. This case and 24 cases previously reported in the literature were analyzed. The types of drug eruption were drug-related lupus (9 cases, acral erythema (7 cases, scleroderma-like skin lesion (2 cases, Stevens–Johnson syndrome (2 cases, lichenoid eruption (1 case, purpura (1 case, lichen planus (1 case, erythema multiforme (1 case, hypopigmentation (1 case and toxic epidermal necrolysis (1 case, respectively. In view of the increasing usage of TS-1 in several common cancers, clinicians should be aware of drug eruptions due to TS-1.

  19. Feasibility Study of Economics and Performance of Solar Photovoltaics at Johnson County Landfill

    Energy Technology Data Exchange (ETDEWEB)

    Salasovich, J.; Mosey, G.

    2012-01-01

    The U.S. Environmental Protection Agency (EPA), in accordance with the RE-Powering America's Land initiative, selected the Johnson County Landfill in Shawnee, Kansas, for a feasibility study of renewable energy production. Citizens of Shawnee, city planners, and site managers are interested in redevelopment uses for landfills in Kansas that are particularly well suited for grid-tied solar photovoltaic (PV) installation. This report assesses the Johnson County Landfill for possible grid-tied PV installations and estimates the cost, performance, and site impacts of three different PV options: crystalline silicon (fixed tilt), crystalline silicon (single-axis tracking), and thin film (fixed tilt). Each option represents a standalone system that can be sized to use an entire available site area. In addition, the report outlines financing options that could assist in the implementation of a system. The feasibility of PV systems installed on landfills is highly impacted by the available area for an array, solar resource, operating status, landfill cap status, distance to transmission lines, and distance to major roads. The report findings are applicable to other landfills in the surrounding area.

  20. Harnessing the heightened public awareness of celebrity HIV disclosures: "Magic" and "Cookie" Johnson and HIV testing.

    Science.gov (United States)

    Tesoriero, J M; Sorin, M D; Burrows, K A; LaChance-McCullough, M L

    1995-06-01

    This article investigates the impact NBA basketball star Earvin ("Magic") Johnson's HIV disclosure had on changes in demand for HIV counseling and testing services in New York State's 61 Anonymous HIV Counseling and Testing sites. Interrupted time-series analyses were conducted on weekly data from over 34,000 clients seeking anonymous HIV counseling and testing services from January 1991 to June 1992, to determine whether demand for these services changed as a result of the disclosure. Results indicated that immediately following the HIV disclosure, there was a substantial increase in service demand, which transcended all sex, race, age, and most HIV risk-related boundaries. Seven months later, demand had not returned to pre-disclosure levels. The strong impact on females, coupled with additional data analyses in obstetrical settings, suggests that previous research has been too narrow in focus, and that the effect of Johnson's HIV disclosure has been enhanced, in part, by the publicity surrounding his wife and baby. The importance of harnessing the heightened public awareness of celebrity HIV disclosures is discussed.

  1. A modified Johnson-Cook constitutive relationship for a rare-earth containing magnesium alloy

    Institute of Scientific and Technical Information of China (English)

    陈道伦; 李德江; 曾小勤

    2013-01-01

    Lightweight magnesium alloy has recently attracted a considerable interest in the automotive and aerospace industries to improve fuel efficiency and reduce CO2 emissions via the weight reduction of vehicles. Rare-earth (RE) element addition can re-markably improve the mechanical properties of magnesium alloys through weakening crystallographic textures associated with the strong mechanical anisotropy and tension-compression yield asymmetry. While the addition of RE elements sheds some light on the alteration in the mechanical anisotropy, available information on the constitutive relationships used to describe the flow behavior of RE-containing magnesium alloys is limited. To establish such a constitutive relationship, uniaxial compressive deformation tests were first conducted on an extruded Mg-10Gd-3Y-0.5Zr (GW103K) magnesium alloy at the strain rates ranging from 1×10-1 to 1×10-4 s-1 at room temperature. A modified Johnson-Cook constitutive equation based on a recent strain hardening equation was proposed to predict the flow stresses of GW103K alloy. Comparisons between the predicted and experimental results showed that the modified Johnson-Cook constitutive equation was able to predict the flow stresses of the RE-containing magnesium alloy fairly accurately with a standard deviation of about 1.8%.

  2. Photometry Transformation from $RGB$ Bayer Filter System to Johnson-Cousins $BVR$ Filter System

    CERN Document Server

    Park, Woojin; Shim, Hyunjin; Le, Huynh Anh N; Im, Myungshin; Chang, Seunghyuk; Yu, Joonkyu

    2015-01-01

    The $RGB$ Bayer filter system consists of mosaic $R$, $G$, and $B$ filters on the grid of photo sensors which typical commercial DSLR (Digital Single Lens Reflex) cameras and CCD cameras are equipped with. Many unique astronomical data obtained using a $RGB$ Bayer filter system are available, including transient objects, e.g., supernovae, variable stars, and solar system bodies. The utilization of such data in scientific research strongly requires reliable photometry transformation methods. In this work, we develop a series of equations to convert the observed magnitudes in the $RGB$ Bayer filter system ($R_B$, $G_B$, and $B_B$) into the Johnson-Cousins $BVR$ filter system ($B_J$, $V_J$, and $R_C$). The new transformation equations derive the calculated magnitudes in Johnson-Cousins filters ($B_{Jcal}$, $V_{Jcal}$, and $R_{Ccal}$) as functions of magnitudes and colors. The mean differences between the transformed magnitudes and original magnitudes, i.e., the residuals, are $\\Delta(B_J-B_{Jcal})$ = 0.104 mag, ...

  3. Hydrocode Simulation with Modified Johnson-Cook Model and Experimental Analysis of Explosively Formed Projectiles

    Science.gov (United States)

    Hussain, G.; Hameed, A.; Hetherington, J. G.; Barton, P. C.; Malik, A. Q.

    2013-04-01

    The formation of mild steel (MS) and copper (Cu) explosively formed projectiles (EFPs) was simulated in AUTODYN using both the Johnson-Cook (JC) and modified Johnson-Cook (JCM) constitutive models. The JC model was modified by increasing the hardening constant by 10%. The previously established semi-empirical equations for diameter, length, velocity, and depth of penetration were used to verify the design of the EFP. The length-to-diameter (L/D) ratio of the warhead used in the simulation varied between 1 projectile distortion or breakup for large standoff applications, the design of the EFP warhead was modified to obtain a lower L/D ratio. Simulations from the JC model underestimated the EFP diameter, resulting in an unrealistically elongated projectile. This shortcoming was resolved by employing the JCM model, giving good agreement with the experimental results. The projectile velocity and hole characteristics in 10-mm-thick aluminum target plates were studied for both models. The semi-empirical equations and the JC model overestimated the projectile velocity, whereas the JCM model underestimated the velocity slightly when compared to the experimental results. The depths of penetration calculated by the semi-empirical equations in the aluminum (Al) target plate were 55 and 52 mm for Cu and MS EFPs, respectively.

  4. Conceptual Inadequacy of the Shore and Johnson Axioms for Wide Classes of Complex Systems

    Directory of Open Access Journals (Sweden)

    Constantino Tsallis

    2015-05-01

    Full Text Available It is by now well known that the Boltzmann-Gibbs-von Neumann-Shannon logarithmic entropic functional (\\(S_{BG}\\ is inadequate for wide classes of strongly correlated systems: see for instance the 2001 Brukner and Zeilinger's {\\it Conceptual inadequacy of the Shannon information in quantum measurements}, among many other systems exhibiting various forms of complexity. On the other hand, the Shannon and Khinchin axioms uniquely mandate the BG form \\(S_{BG}=-k\\sum_i p_i \\ln p_i\\; the Shore and Johnson axioms follow the same path. Many natural, artificial and social systems have been satisfactorily approached with nonadditive entropies such as the \\(S_q=k \\frac{1-\\sum_i p_i^q}{q-1}\\ one (\\(q \\in {\\cal R}; \\,S_1=S_{BG}\\, basis of nonextensive statistical mechanics. Consistently, the Shannon 1948 and Khinchine 1953 uniqueness theorems have already been generalized in the literature, by Santos 1997 and Abe 2000 respectively, in order to uniquely mandate \\(S_q\\. We argue here that the same remains to be done with the Shore and Johnson 1980 axioms. We arrive to this conclusion by analyzing specific classes of strongly correlated complex systems that await such generalization.

  5. DOES BRAND EXTENSION IMPACT PARENT BRAND: A CASE OF JOHNSON, UK

    Directory of Open Access Journals (Sweden)

    Muhammad Shakil AHMAD

    2011-01-01

    Full Text Available Purpose of study: The main purpose of this study is to check the impact ofbrand extensions on brand image. For this purpose Johnson is selected asparent brand for current research. The targeted brand extensions areJohnson shampoo, Johnson’s isotonic drinks, Johnson’s sports wear andJohnson’s suntan lotion. Research Methodology: sample was selected fromBradford, UK. Sample consists of graduate students including males as wellas female. Total sample size is 60 and data was collected through selfadministered questionnaires. For each brand 15 respondents were selected.Convenient sampling was selected as sampling technique. Results: Resultsshow that Johnson’s have high brand awareness and perceived quality.While there is negative correlation results for brand fit on brand image forthose product extensions which are not in same brand category i.e.Johnson’s sportswear and Johnson’s isotonic drinks. Conclusion: It isconcluded from study results that launching new product in same parentbrand category have high chance of success while in different category isrisk.

  6. Introduction to Space Station Freedom

    Science.gov (United States)

    Kohrs, Richard

    NASA field centers and contractors are organized to develop 'work packages' for Space Station Freedom. Marshall Space Flight Center and Boeing are building the U.S. laboratory and habitation modules, nodes, and environmental control and life support system; Johnson Space Center and McDonnell Douglas are responsible for truss structure, data management, propulsion systems, thermal control, and communications and guidance; Lewis Research Center and Rocketdyne are developing the power system. The Canadian Space Agency (CSA) is contributing a Mobile Servicing Center, Special Dextrous Manipulator, and Mobile Servicing Center Maintenance Depot. The National Space Development Agency of Japan (NASDA) is contributing a Japanese Experiment Module (JEM), which includes a pressurized module, logistics module, and exposed experiment facility. The European Space Agency (ESA) is contributing the Columbus laboratory module. NASA ground facilities, now in various stages of development to support Space Station Freedom, include: Marshall Space Flight Center's Payload Operations Integration Center and Payload Training Complex (Alabama), Johnson Space Center's Space Station Control Center and Space Station Training Facility (Texas), Lewis Research Center's Power System Facility (Ohio), and Kennedy Space Center's Space Station Processing Facility (Florida). Budget appropriations impact the development of the Space Station. In Fiscal Year 1988, Congress appropriated only half of the funds that NASA requested for the space station program ($393 million vs. $767 million). In FY 89, NASA sought $967 million for the program, and Congress appropriated $900 million. NASA's FY 90 request was $2.05 billion compared to an appropriation of $1.75 billion; the FY 91 request was $2.45 billion, and the appropriation was $1.9 billion. After NASA restructured the Space Station Freedom program in response to directions from Congress, the agency's full budget request of $2.029 billion for Space Station

  7. Elfin butterflies of the genus Rhamma Johnson (Lepidoptera: Lycaenidae: Theclinae): A review of the Colombian species.

    Science.gov (United States)

    Prieto, Carlos; Vargas, Maria A

    2016-03-22

    The Colombian species of the genus Rhamma Johnson, 1992 are revised. Male and female phenotypes of all species are associated and diagnosed, and data on their distributions are given along with a discussion of the geographic variability of the species. Thirteen taxa are considered valid at the species level. The following taxonomic changes are proposed: Rhamma andradei (Le Crom & Johnson), stat. nov, comb. nov.; previously considered a nomen dubium in Penaincisalia Johnson, the taxon is considered a valid species of Rhamma. The placement of Rhamma anosma (Draudt), comb. nov., described as Thecla, is confirmed as belonging to Rhamma. A lectotype is designated for Thecla mishma Hewitson, 1878. Adults, male and female genitalia, and distribution maps are depicted for all species, along with an identification key based on adults.

  8. Does Johnson's Prescriptive Approach Still Have a Role to Play in Modern-Day Dictionaries?

    Directory of Open Access Journals (Sweden)

    Rufus H. Gouws

    2011-10-01

    Full Text Available

    ABSTRACT: Samuel Johnson's dictionary (1755 confirmed both the status of dictionaries as authoritative sources of (linguistic knowledge and the prescriptive approach in lexicography. This approach prevailed for a long time. During the last decades the descriptive approach came to the fore, aptly supported by the increased reliance on lexicographic corpora. Modern-day lexicography has also witnessed the introduction of a third approach, i.e. the proscriptive approach, which includes features of both the prescriptive and the descriptive approach. This article investigates the occurrence of the prescriptive, descriptive and proscriptive approaches in modern-day dictionaries. A distinction is made between dictionaries focusing on language for general purposes and dictionaries focusing on languages for special purposes. It is shown that users rely on dictionaries as prescriptive reference sources and expect lexicographers to provide them with an answer to the specific question that prompted the dictionary consultation process. It is argued that knowledgeable dictionary users must be able to achieve an unambiguous retrieval of information and must be able to rely on the dictionary to satisfy their specific cognitive or communicative needs. Here the proscriptive approach plays an important role.

    OPSOMMING: Het Johnson se preskriptiewe benadering nog 'n rol te speel in moderne woordeboeke? Samuel Johnson se woordeboek (1755 het die status van woordeboeke as gesaghebbende houers van (taalkundige kennis, maar eweneens die preskriptiewe benadering in leksikografie gevestig. Hierdie benadering het lank gegeld. Gedurende die onlangse dekades het die deskriptiewe benadering op die voorgrond getree, sterk ondersteun deur toenemende benutting van korpora. Moderne leksikografie het 'n derde benadering beleef, te wete die proskriptiewe benadering wat kenmerke van sowel die preskriptiewe as die deskriptiewe benadering bevat. Hierdie artikel ondersoek die

  9. Space debris executive summary

    Energy Technology Data Exchange (ETDEWEB)

    Canavan, G.H.; Judd, O.; Naka, R.F.

    1996-09-01

    Spacecraft, boosters, and fragments are potential hazards to space vehicles, and it is argued that collisions between them could produce a cascade that could preclude activity in LEO in 25 to 50 years. That has generated pressure for constraints on military space operations, so the AF SAB performed a study of technical aspects of the debris problem. The Study was independent of the efforts of the Air Force Space Command (AFSPC) as well as those of and NASA Johnson Space Center (JSC), which is the principal advocate for cascades and constraints. Most work on space debris has been performed by AFSPC and JSC, so the Study was in part an assessment of their efforts, in which both have been cooperative. The Study identified the main disagreements and quantified their impacts. It resolved some issues and provided bounds for the rest. It treated radar and optical observations; launch, explosion, and decay rates; and the number and distribution of fragments from explosions and collisions. That made it possible to address hazard to manned spacecraft at low altitudes and the possibility of cascading at higher altitudes, both of which now appear less likely.

  10. Carbon Nanotubes for Space Applications

    Science.gov (United States)

    Meyyappan, Meyya

    2000-01-01

    The potential of nanotube technology for NASA missions is significant and is properly recognized by NASA management. Ames has done much pioneering research in the last five years on carbon nanotube growth, characterization, atomic force microscopy, sensor development and computational nanotechnology. NASA Johnson Space Center has focused on laser ablation production of nanotubes and composites development. These in-house efforts, along with strategic collaboration with academia and industry, are geared towards meeting the agency's mission requirements. This viewgraph presentation (including an explanation for each slide) outlines the research focus for Ames nanotechnology, including details on carbon nanotubes' properties, applications, and synthesis.

  11. Nutritional Products from Space Research

    Science.gov (United States)

    1996-01-01

    Six scientists from Martin Marietta who did research for NASA on algae as food supply, oxygen source and a recycling agent for long duration space travel founded Martek Biosciences Corporation. Martek's main product is Formulaid for infants, an algae-based, vegetable-like oil containing two essential polyunsaturated fatty acids known as DHA (docosahexaenoic acid) and ARA (arachidonic acid). The acids are found in human milk but not in most infant formulas, and they are believed to be associated with mental and visual development. Formulaid is on the market in two European countries and licensed to the Mead Johnson Division of Bristol-Myers Squibb, American Home Products and others.

  12. How the Station will operate. [operation, management, and maintenance in space

    Science.gov (United States)

    Cox, John T.

    1988-01-01

    Aspects of the upcoming operational phase of the Space Station (SS) are examined. What the crew members will do with their time in their specialized roles is addressed. SS maintenance and servicing and the interaction of the SS Control Center with Johnson Space Center is discussed. The planning of payload operations and strategic planning for the SS are examined.

  13. Nanomaterials for Advanced Life Support in Advanced Life Support in Space systems

    Science.gov (United States)

    Allada, Rama Kumar; Moloney, Padraig; Yowell, Leonard

    2006-01-01

    A viewgraph presentation describing nanomaterial research at NASA Johnson Space Center with a focus on advanced life support in space systems is shown. The topics include: 1) Introduction; 2) Research and accomplishments in Carbon Dioxide Removal; 3) Research and Accomplishments in Water Purification; and 4) Next Steps

  14. Peristaltic motion of a Johnson-Segalman fluid in a planar channel

    Directory of Open Access Journals (Sweden)

    Hayat T.

    2003-01-01

    Full Text Available This paper is devoted to the study of the two-dimensional flow of a Johnson-Segalman fluid in a planar channel having walls that are transversely displaced by an infinite, harmonic travelling wave of large wavelength. Both analytical and numerical solutions are presented. The analysis for the analytical solution is carried out for small Weissenberg numbers. (A Weissenberg number is the ratio of the relaxation time of the fluid to a characteristic time associated with the flow. Analytical solutions have been obtained for the stream function from which the relations of the velocity and the longitudinal pressure gradient have been derived. The expression of the pressure rise over a wavelength has also been determined. Numerical computations are performed and compared to the perturbation analysis. Several limiting situations with their implications can be examined from the presented analysis.

  15. Systematic errors in the correlation method for Johnson noise thermometry: residual correlations due to amplifiers

    CERN Document Server

    Callegaro, Luca; Ortolano, Massimo

    2009-01-01

    Johnson noise thermometers (JNT) measure the equilibrium electrical noise, proportional to thermodynamic temperature, of a sensing resistor. In the correlation method, the same resistor is connected to two amplifiers and a correlation of their outputs is performed, in order to reject amplifiers' noise. Such rejection is not perfect: the residual correlation gives a systematic error in the JNT reading. In order to put an upper limit, or to achieve a correction, for such error, a careful electrical modelling of the amplifiers and connections must be performed. Standard numerical simulation tools are inadequate for such modelling. In literature, evaluations have been performed by the painstaking solving of analytical modelling. We propose an evaluation procedure for the JNT error due to residual correlations which blends analytical and numerical approaches, with the benefits of both: a rigorous and accurate circuit noise modelling, and a fast and flexible evaluation with an user-friendly commercial tool. The met...

  16. Treatment for tuberculosis in a patient with Dubin-Johnson syndrome.

    Science.gov (United States)

    Alpana, Meena; Daga, Mradul Kumar; Aggarwal, Sunita; Nidhi, Anand

    2015-08-11

    Dubin-Johnson syndrome (DJS) is an autosomal recessive disorder characterised by conjugated hyperbilirubinemia resulting from mutations of ABCC2/MRP2 gene. The beneficial effects of ursodeoxycholic acid (UDCA) and rifampicin were found to be complementary in the treatment of cholestatic liver disease secondary to DJS. We present a case of a young woman with tubercular meningitis. She was started on modified antitubercular therapy in view of conjugated hyperbilirubinemia. However, reinitiation of rifampicin resulted in redevelopment of jaundice. Liver biopsy was suggestive of DJS. The patient was started on rifampicin along with UDCA. There was improvement in hyperbilirubinemia and a full course of antituberculous therapy without further worsening of the disorder was possible. This is a rare case of DJS with tuberculosis, showing beneficial effects of rifampicin and UDCA combination therapy, which so far has been considered doubtful. It is uncertain what the level of efficacy of therapy is in various MRP2 gene mutations.

  17. Is intravenous immunoglobulin effective in toxic epidermal necrolysis and Stevens-Johnson syndrome?

    Directory of Open Access Journals (Sweden)

    Lucas Navajas

    2014-10-01

    Full Text Available Toxic epidermal necrolysis and Stevens-Johnson syndrome are severe cutaneous adverse drug reactions. Intravenous immunoglobulin is described as a therapeutic option, however its use is still controversial. Using Epistemonikos database, which is maintained by screening over 20 databases, we identified six systematic reviews, including 39 primary studies. We combined the evidence using tables for summary of findings, following the GRADE approach, and concluded there is uncertainty about the effects of intravenous immunoglobulin because the certainty of the evidence is very low; it probably leads to important adverse effects; and has high cost. Intravenous immunoglobulin should not be used outside the context of a clinical trial, or only in cases where other treatments have failed and there are no resource constraints.

  18. Quality of Streams in Johnson County, Kansas, and Relations to Environmental Variables, 2003-07

    Science.gov (United States)

    Rasmussen, Teresa J.; Poulton, Barry C.; Graham, Jennifer L.

    2009-01-01

    The quality of streams and relations to environmental variables in Johnson County, northeastern Kansas, were evaluated using water, streambed sediment, land use, streamflow, habitat, algal periphyton (benthic algae), and benthic macroinvertebrate data. Water, streambed sediment, and macroinvertebrate samples were collected in March 2007 during base flow at 20 stream sites that represent 11 different watersheds in the county. In addition, algal periphyton samples were collected twice (spring and summer 2007) at one-half of the sites. Environmental data including water and streambed-sediment chemistry data (primarily nutrients, fecal-indicator bacteria, and organic wastewater compounds), land use, streamflow, and habitat data were used in statistical analyses to evaluate relations between biological conditions and variables that may affect them. This report includes an evaluation of water and streambed-sediment chemistry, assessment of habitat conditions, comparison of biological community attributes (such as composition, diversity, and abundance) among sampling sites, placement of sampling sites into impairment categories, evaluation of biological data relative to environmental variables, and evaluation of changes in biological communities and effects of urbanization. This evaluation is useful for understanding factors that affect stream quality, for improving water-quality management programs, and for documenting changing conditions over time. The information will become increasingly important for protecting streams in the future as urbanization continues. Results of this study indicate that the biological quality at nearly all biological sampling sites in Johnson County has some level of impairment. Periphyton taxa generally were indicative of somewhat degraded conditions with small to moderate amounts of organic enrichment. Camp Branch in the Blue River watershed was the only site that met State criteria for full support of aquatic life in 2007. Since 2003

  19. Calibrating the Johnson-Holmquist Ceramic Model for SiC using CTH

    Science.gov (United States)

    Cazamias, James

    2009-06-01

    The Johnson-Holmquist ceramic material model has been calibrated and successfully applied to numerically simulate ballistic events using the Lagrangian code EPIC. While the majority of the constants are ``physics'' based, two of the constants for the failed material response are calibrated using ballistic experiments conducted on a confined cylindrical ceramic target. The maximum strength of the failed ceramic is calibrated by matching the penetration velocity. The second refers to the equivalent plastic strain at failure under constant pressure and is calibrated using the dwell time. Use of these two constants in the CTH Eulerian hydrocode does not predict the ballistic response. This difference may be due to the phenomenological nature of the model and the different numerical schemes used by the codes. This paper determines the afore mentioned material constants for SiC suitable for simulating ballistic events using CTH.

  20. Demonstration of Johnson noise thermometry with all-superconducting quantum voltage noise source

    Energy Technology Data Exchange (ETDEWEB)

    Yamada, Takahiro, E-mail: yamada-takahiro@aist.go.jp; Urano, Chiharu; Maezawa, Masaaki [National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568 (Japan)

    2016-01-25

    We present a Johnson noise thermometry (JNT) system based on an integrated quantum voltage noise source (IQVNS) that has been fully implemented using superconducting circuit technology. To enable precise measurement of Boltzmann's constant, an IQVNS chip was designed to produce intrinsically calculable pseudo-white noise to calibrate the JNT system. On-chip real-time generation of pseudo-random codes via simple circuits produced pseudo-voltage noise with a harmonic tone interval of less than 1 Hz, which was one order of magnitude finer than the harmonic tone interval of conventional quantum voltage noise sources. We estimated a value for Boltzmann's constant experimentally by performing JNT measurements at the temperature of the triple point of water using the IQVNS chip.

  1. Evaluation of Johnson-Cook model constants for aluminum based particulate metal matrix composites

    Science.gov (United States)

    Hilfi, H.; Brar, N. S.

    1996-05-01

    High strain rate and high temperature response of three types of aluminum based particulate metal matrix ceramic composites is investigated by performing split Hopkinson pressure bar (SHPB) experiments. The composites are: NGP-2014 (15% SiC), NGT-6061 (15% SiC), and NGU-6061 (15% Al2O3), in which all the reinforcement materials are percentage by volume. Johnson-Cook constitutive model constants are evaluated from the high strain rate/high temperature data and implemented in a two dimensional finite element computer code (EPIC-2D) to simulate the penetration of an ogive nose tungsten projectile (23 grams) at a velocity 1.17 km/sec into the base 6061-T6 aluminum alloy and the composite NGU-6061. The simulated penetrations in the composite and in 6061-T6 aluminum agree with in 2%, in both materials, with the measured values.

  2. Peristaltic motion of Johnson-Segalman fluid in a curved channel with slip conditions.

    Directory of Open Access Journals (Sweden)

    Sadia Hina

    Full Text Available Slip effects on the peristaltic transport of Johnson-Segalman fluid through a curved channel have been addressed. The influence of wall properties is also analyzed. Long wavelength and low Reynolds number assumptions have been utilized in the mathematical formulation of the problem. The equations so formed have been solved numerically by shooting method through computational software Mathematica 8. In addition the analytic solution for small Weissenberg number (elastic parameter is computed through a regular perturbation method. An excellent agreement is noticed between the two solutions. The results indicate an increase in the magnitude of velocity with an intensification in the slip effect. Moreover the size and circulation of the trapped boluses increase with an increase in the slip parameter. Unlike the planar channel, the profiles of axial velocity are not symmetric about the central line of the channel.

  3. Peristaltic motion of Johnson-Segalman fluid in a curved channel with slip conditions.

    Science.gov (United States)

    Hina, Sadia; Mustafa, Meraj; Hayat, Tasawar

    2014-01-01

    Slip effects on the peristaltic transport of Johnson-Segalman fluid through a curved channel have been addressed. The influence of wall properties is also analyzed. Long wavelength and low Reynolds number assumptions have been utilized in the mathematical formulation of the problem. The equations so formed have been solved numerically by shooting method through computational software Mathematica 8. In addition the analytic solution for small Weissenberg number (elastic parameter) is computed through a regular perturbation method. An excellent agreement is noticed between the two solutions. The results indicate an increase in the magnitude of velocity with an intensification in the slip effect. Moreover the size and circulation of the trapped boluses increase with an increase in the slip parameter. Unlike the planar channel, the profiles of axial velocity are not symmetric about the central line of the channel.

  4. Phosphorus in sediment in the Kent Park Lake watershed, Johnson County, Iowa, 2014–15

    Science.gov (United States)

    Kalkhoff, Stephen J.

    2016-07-12

    Phosphorus data were collected from the Kent Park Lake watershed in Johnson County, Iowa, in 2014 and 2015 to obtain information to assist in the management of the water quality in the lake. Phosphorus concentrations were measured for sediment from several ponds in the watershed and sediment deposited in the lake. The first set of samples was collected in 2014 to understand phosphorus in several potential sources to the lake and the spatial variability in lake sediments. Phosphorus concentrations ranged from 68 to 380 milligrams per kilogram in lake sediment and from 57 to 220 milligrams per kilogram in sedimentation and dredge spoil ponds. Additional samples were collected in 2015 to determine how phosphorus concentrations vary with depth in the lake sediment. Phosphorus concentrations generally decreased with increasing depth within the lake sediment. In 2015, total phosphorus concentrations in lake sediment ranged from 50 to 340 milligrams per kilogram.

  5. Streptococcus agalactiae Endophthalmitis in Boston Keratoprosthesis in a Patient with Steven–Johnson Syndrome

    Science.gov (United States)

    Al-Otaibi, Humoud M.; Talea, Mohammed; Kirat, Omar; Stone, Donald U.; May, William N.; Kozak, Igor

    2016-01-01

    A 25-year-old Syrian male with a previous episode of Stevens-Johnson syndrome with bilateral corneal cicatrization previously underwent surgery for Type 1 Boston Keratoprosthesis (K-Pro). Sixteen months after the K-Pro surgery, the patient presented with decreased vision to hand motion and microbial keratitis of the graft around the K-Pro with purulent discharge. Corneal scrapings were nonrevealing. B-scan in 3 days showed increased debris in the vitreous cavity and thickened retinochoroidal layer. Intravitreal tap and injections of vancomycin and ceftazidime were performed. The vitreous culture revealed β-hemolytic Streptococcus agalactiae; fungal cultures were negative. Repeat B-scan 3 days later demonstrated decreased vitreous opacity, and the patient felt more comfortable and was without pain. His visual acuity improved to 20/70, ocular findings have been stable for 9 months, and the patient continues to be monitored. PMID:27994401

  6. Bronchiolitis obliterans complicating a pneumothorax after Stevens-Johnson syndrome induced by lamotrigine

    Directory of Open Access Journals (Sweden)

    Wu-ping Wang

    2015-03-01

    Full Text Available Bronchiolitis obliterans (BO was defined as a nonreversible obstructive lung disease in which the bronchioles are always compressed and narrowed by fibrosis or inflammation. In the severe event of lung collapse after BO, surgical intervention is often recommended, and conservative therapy is thought to be ineffective. Here, we report the case of a 9-year old girl clinically diagnosed as having bronchiolitis obliterans with abrupt occlusion of the right B4b bronchus. After a lamotrigine-induced Stevens-Johnson syndrome (SJS occurred, she presented with total collapse of the right lung on admission, which was subsequently complicated by a pneumothorax during conservative treatment, but with the re-expansion of the right upper lobe after intervention. The case indicates the possibility of reversing pulmonary atelectasis in BO. Thus, surgery may not be necessary.

  7. El catedrático de Farmacia Manuel Serafín Johnson Larralde

    Directory of Open Access Journals (Sweden)

    Pilar Marchante Castellanos

    Full Text Available El doctor Manuel Serafín Johnson Larralde se incorporó a la docencia en la Universidad de La Habana y al ejercicio de la profesión inmediatamente después de su graduación como doctor en Farmacia en 1883. Se presentan los principales datos sobre su trayectoria estudiantil en esa institución, la cual debió transitar con gran esfuerzo y perseverancia dada su condición de huérfano y la carencia de suficientes recursos económicos para abonar los pagos establecidos. También se ofrecen los detalles de su vida académica en la Universidad, marcada por reiteradas licencias que solicitó para viajar al extranjero por motivos de salud, según consta en su expediente administrativo. Se hace referencia a su destacado desempeño como propietario de una farmacia que llegó a convertir en farmacia-droguería, la cual logró prestigiar gracias a la profesionalidad de los servicios que se prestaban en ella. Johnson Larralde supo garantizar la formación universitaria de sus cinco hijos; cuatro de ellos farmacéuticos, quienes se convirtieron en continuadores de su tenaz dedicación a la especialidad. Por el legado que dejó tanto en la enseñanza universitaria, como en la práctica de la profesión merece un sitial de honor en la historia de la Farmacia en Cuba.

  8. The Robert Wood Johnson Foundation Diabetes Initiative: demonstration projects emphasizing self-management.

    Science.gov (United States)

    Fisher, Edwin B; Brownson, Carol A; O'Toole, Mary L; Shetty, Gowri; Anwuri, Victoria V; Fazzone, Patricia; Housemann, Robyn A; Hampton, Andrea D; Kamerow, Douglas B; McCormack, Lauren A; Burton, Joseph A; Orleans, C Tracy; Bazzarre, Terry L

    2007-01-01

    The purpose of the Diabetes Initiative of the Robert Wood Johnson Foundation is to demonstrate feasible and sustainable approaches to promoting diabetes self-management in primary care and community settings. The Diabetes Initiative of the Robert Wood Johnson Foundation includes 14 demonstration projects in primary care settings and in community-clinical partnerships. Projects serve predominantly indigent populations from varied cultural and linguistic backgrounds in urban, rural, and frontier settings around the United States. This report describes the Initiative, its ecological perspective on self-management, and implications for program development, sustainability, and dissemination. Ecological perspectives stress varied levels of influence ranging from individuals to communities and policies. Based on this, the Initiative has identified key resources and supports for self-management (individualized assessment, collaborative goal setting, enhancing skills, follow-up and support, community resources, and continuity of quality clinical care). Lessons learned include the central roles of community health workers, integration of healthy coping and attention to negative emotion and depression in self-management, community partnerships, approaches to ongoing follow-up and support, organizational factors in sustaining programs, and the utility of a collaborative learning network for program development. Sustainability stresses organizational and policy supports for the program. Dissemination of lessons learned will stress collaboration among interested parties, stimulating consumer understanding and demand for self-management services as central to diabetes care. The Diabetes Initiative demonstrates that effective self-management programs and supports can be implemented in real-world clinical and community settings, providing models of worthwhile, sustainable programs.

  9. Accomplishments of the NASA Johnson Space Center portion of the soil moisture project in fiscal year 1981

    Science.gov (United States)

    Paris, J. F.; Arya, L. M.; Davidson, S. A.; Hildreth, W. W.; Richter, J. C.; Rosenkranz, W. A.

    1982-01-01

    The NASA/JSC ground scatterometer system was used in a row structure and row direction effects experiment to understand these effects on radar remote sensing of soil moisture. Also, a modification of the scatterometer system was begun and is continuing, to allow cross-polarization experiments to be conducted in fiscal years 1982 and 1983. Preprocessing of the 1978 agricultural soil moisture experiment (ASME) data was completed. Preparations for analysis of the ASME data is fiscal year 1982 were completed. A radar image simulation procedure developed by the University of Kansas is being improved. Profile soil moisture model outputs were compared quantitatively for the same soil and climate conditions. A new model was developed and tested to predict the soil moisture characteristic (water tension versus volumetric soil moisture content) from particle-size distribution and bulk density data. Relationships between surface-zone soil moisture, surface flux, and subsurface moisture conditions are being studied as well as the ways in which measured soil moisture (as obtained from remote sensing) can be used for agricultural applications.

  10. Societal Factors; An Analysis of Selected Factors of Dormitory Students and Commuting Students at Johnson and Wales College.

    Science.gov (United States)

    Bukowski, Joseph E.

    Focusing on freshmen commuter students and freshmen dormitory students at Johnson and Wales College, general characteristics and academic achievement were measured. General entrance characteristics included student age, College Entrance Examination Board scores and high school rank. Academic achievement was measured in terms of student grades in…

  11. Validation of the Spanish Version of the Woodcock-Johnson Mathematics Achievement Tests for Children Aged 6 to 13

    Science.gov (United States)

    Diamantopoulou, Sofia; Pina, Violeta; Valero-Garcia, Ana V.; Gonzalez-Salinas, Carmen; Fuentes, Luis J.

    2012-01-01

    This study validated the four mathematics tests of the Spanish version of the Woodcock-Johnson III (WJ-III) Achievement (ACH) battery for use in the first six grades of school in Spain. Developmental effects and gender differences were also examined. Participants were a normal population sample of 424 (216 boys) children aged 6 to 13 years.…

  12. The rediscovery of Cervera atlantica (Johnson, 1861) (Cnidaria: Octocorallia): notes on its identification, ecology and geographical distribution

    NARCIS (Netherlands)

    Williams, R.B.

    1996-01-01

    Cervera atlantica, a small stoloniferan octocoral, was described as Cornularia atlantica by James Yate Johnson in 1861 from Funchal, Madeira. It then remained unrecognized until 1972 when I discovered it on the Mediterranean coast of Spain. I have since confirmed its existence at the type locality

  13. Extensions of the Johnson-Neyman Technique to Linear Models with Curvilinear Effects: Derivations and Analytical Tools

    Science.gov (United States)

    Miller, Jason W.; Stromeyer, William R.; Schwieterman, Matthew A.

    2013-01-01

    The past decade has witnessed renewed interest in the use of the Johnson-Neyman (J-N) technique for calculating the regions of significance for the simple slope of a focal predictor on an outcome variable across the range of a second, continuous independent variable. Although tools have been developed to apply this technique to probe 2- and 3-way…

  14. William R.Johnson,Board Chairman and CEO of HJ.Heinz Company has won the Marco Polo Award 2006

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    @@ Thanks to the contribution in promoting the talents visit and trade communication between America and China,William R.Johnson,Board Chairman and CEO of H.J.Heinz Company has won the Marco Polo Award.Zhang Jianguo,Vice President of China Foreign Experts Bureau granted the award to him.

  15. Transformation of an empirical distribution to normal distribution by the use of Johnson system of translation and symmetrical quantile method

    OpenAIRE

    Ludvík Friebel; Jana Friebelová

    2006-01-01

    This article deals with approximation of empirical distribution to standard normal distribution using Johnson transformation. This transformation enables us to approximate wide spectrum of continuous distributions with a normal distribution. The estimation of parameters of transformation formulas is based on percentiles of empirical distribution. There are derived theoretical probability distribution functions of random variable obtained on the base of backward transformation standard normal ...

  16. Taxonomic revision of the afrotropical genus Megatrigon Johnson, 1898 (Diptera: Syrphidae)

    DEFF Research Database (Denmark)

    Doczkal, Dieter; Radenković, Snežana; Lyneborg, Leif

    2016-01-01

    The genus-group taxon Megatrigon Johnson, 1898, stat. nov., is revised and treated as a valid genus within the Merodontini (= Eumerini). Extensive diagnoses are given for the genus and for its three constituent species groups: argenteus group [11 spp.], nivalis group [monotypic], sexfasciatus gro...

  17. Teaching the Role of Secretin in the Regulation of Gastric Acid Secretion Using a Classic Paper by Johnson and Grossman

    Science.gov (United States)

    Walton, Kristen L. W.

    2009-01-01

    The regulation of gastric acid secretion has been the subject of investigation for over a century. Inhibition of gastrin-induced acid secretion by the intestine-derived hormone secretin provides a classic physiological example of negative feedback in the gastrointestinal tract. A classic paper by Leonard R. Johnson and Morton I. Grossman clearly…

  18. Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis : Are Drug Dictionaries Correctly Informing Physicians Regarding the Risk?

    NARCIS (Netherlands)

    Haddad, Cynthia; Sidoroff, Alexis; Kardaun, Sylvia H.; Mockenhaupt, Maja; Creamer, Daniel; Dunant, Ariane; Roujeau, Jean-Claude

    2013-01-01

    Stevens-Johnson syndrome/toxic epidermal necrolysis (SJS/TEN) are severe drug reactions associated with high mortality and multiple incapacitating sequelae. In the past 20 years, two large multinational case control studies, published in 1995 and 2008, had identified different degrees of drug associ

  19. The Leibniz-Hopf algebra and Lyndon words

    NARCIS (Netherlands)

    Hazewinkel, M.

    1996-01-01

    Let ${cal Z$ denote the free associative algebra ${ol Z langle Z_1 , Z_2 , ldots rangle$ over the integers. This algebra carries a Hopf algebra structure for which the comultiplication is $Z_n mapsto Sigma_{i+j=n Z_i otimes Z_j$. This the noncommutative Leibniz-Hopf algebra. It carries a natural gra

  20. The Leibniz-Hopf algebra and Lyndon words

    NARCIS (Netherlands)

    M. Hazewinkel (Michiel)

    1996-01-01

    textabstractLet ${cal Z$ denote the free associative algebra ${ol Z langle Z_1 , Z_2 , ldots rangle$ over the integers. This algebra carries a Hopf algebra structure for which the comultiplication is $Z_n mapsto Sigma_{i+j=n Z_i otimes Z_j$. This the noncommutative Leibniz-Hopf algebra. It carries a

  1. Information Presentation: Human Research Program - Space Human Factors and Habitability, Space Human Factors Engineering Project

    Science.gov (United States)

    Holden, Kristina L.; Sandor, Aniko; Thompson, Shelby G.; Kaiser, Mary K.; McCann, Robert S.; Begault, D. R.; Adelstein, B. D.; Beutter, B. R.; Wenzel, E. M.; Godfroy, M.; Stone, L. S.

    2010-01-01

    The goal of the Information Presentation Directed Research Project (DRP) is to address design questions related to the presentation of information to the crew. The major areas of work, or subtasks, within this DRP are: 1) Displays, 2) Controls, 3) Electronic Procedures and Fault Management, and 4) Human Performance Modeling. This DRP is a collaborative effort between researchers atJohnson Space Center and Ames Research Center. T

  2. Síndrome de Dress y síndrome de Steven Johnson

    Directory of Open Access Journals (Sweden)

    Shang Wu Hsieh

    2011-03-01

    Full Text Available Las enfermedades de la piel muchas veces se asocian a medicamentos que pueden resultar en consecuencias fatales si no se detecta su causa a tiempo. El síndrome de Dress (Drug reaction with eosinophilia and systemic symptoms es una enfermedad caracterizada por la tríada rash, compromiso sistémico y visceral y en la mayoría de los casos se ha reportado la presencia de eosinofilia; que se asocia en la mayoría de las veces al uso de antiepilépticos aunque no de manera exclusiva. El síndrome de Stevens Johnson, es una reacción mucocutánea que se caracteriza por un rash macular en cara y tronco, con fiebre los primeros tres días y culmina con la presencia de bulas que son el resultado de un desacoplamiento de la epidermis y la dermis. Ambas enfermedades están asociadas a infecciones o al uso de medicamentos y mejoran con el diagnóstico oportuno y la suspensión inmediata del medicamento.In many situations, the skin pathologies are associated with the use of drugs in which the consequences can be mortal if it´s not diagnosed on time. The Dress Syndrome (Drug reaction with eosinophilia and systemic symptoms is an illness characterized by the presence of the triad which are rash, systemic symptoms, abdominal organ affectation and in many situations there were reports of the presence of eosinophilia; which are associated with the use of anticonvulsants but not exclusively. The Stevens Johnson syndrome is a mucous cutaneous reaction characterized by the presence of macular rash on the face and middle body, with fever in the first three days and ends up when the body shows the bullous dermal lesions due to the separation of the skin layers known as the epidermis and dermis. Both pathologies are associated with infections and the use of drugs, and the patients recovers with the quick recognition of the cause, by the physician, and the immediate suppression of the drug.

  3. Mucous membrane grafting for the post-Steven-Johnson syndrome symblepharon: A case report

    Directory of Open Access Journals (Sweden)

    Jayanta Kumar Das

    2011-01-01

    Full Text Available An 18-year-old woman was referred with late sequelae of chloroquine-induced Steven-Johnson syndrome. At the time of presentation, the symblepharon was involving the upper lids to almost the whole of the cornea, and part of the lower bulbar conjunctiva with the lower lid bilaterally. Other ocular examinations were not possible due to the symblepharon. B-scan ultrasonography revealed acoustically clear vitreous, normal chorioretinal thickness, and normal optic nerve head, with an attached retina. Conjunctivo-corneal adhesion released by superficial lamellar dissection of the cornea. Ocular surface reconstruction was carried out with a buccal mucous membrane. A bandage contact lens was placed over the cornea followed by the symblepharon ring to prevent further adhesion. The mucosal graft was well taken up along with corneal re-epithelization. Best corrected visual acuity of 20/120 in both sides after 1 month and 20/80 after 3 months was achieved and maintained till the 2.5-year follow-up.

  4. Genetic Markers and Danger Signals in Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis

    Directory of Open Access Journals (Sweden)

    Wen-Hung Chung

    2010-01-01

    Full Text Available Stevens-Johnson syndrome (SJS and toxic epidermal necrolysis (TEN are life-threatening adverse reactions, which could be induced by a variety of drugs. It was proposed that human leukocyte antigen (HLA-restricted presentation of antigens (drugs or their metabolites to T lymphocytes initiates the immune reactions of SJS/ TEN. However, the genetic susceptibility and the exact pathogenesis were not clear until the recent studies. We first identified that HLA-B*1502 is strongly associated with carbamazepine (CBZ-induced SJS/TEN and HLA-B*5801 with allopurinol-SJS/TEN in Han Chinese. The same associations had been validated across different human populations. For the downstream danger signals, Fas-Fas ligand (FasL and perforin/granzyme B had been advocated as cytotoxic mediators for keratinocyte death in SJS/TEN. However, expression levels of these cytotoxic proteins from the skin lesions were too low to explain the distinct and extensive epidermal necrosis. Our recent study identified that the granulysin, a cytotoxic protein released from cytotoxic T cells or natural killer (NK cells, is a key mediator for disseminated keratinocyte death in SJS/TEN. This article aims to provide an overview of both of the genomic and immunologic perspectives of SJS/TEN. These studies give us a better understanding of the immune mechanisms, biomarkers for disease prevention and early diagnosis, as well as providing the therapeutic targets for the treatments of SJS/TEN.

  5. Improved electronic measurement of the Boltzmann constant by Johnson noise Thermometry

    CERN Document Server

    Qu, Jifeng; Pollarolo, Alessio; Rogalla, Horst; Tew, Weston L; White, Rod; Zhou, Kunli

    2015-01-01

    The unit of thermodynamic temperature, the kelvin, will be redefined in 2018 by fixing the value of the Boltzmann constant, k. The present CODATA recommended value of k is determined predominantly by acoustic gas-thermometry results. To provide a value of k based on different physical principles, purely electronic measurements of k were performed by using a Johnson noise thermometer to compare the thermal noise power of a 200 Ohm sensing resistor immersed in a triple-point-of-water cell to the noise power of a quantum-accurate pseudo-random noise waveform of nominally equal noise power. Measurements integrated over a bandwidth of 550 kHz and a total integration time of 33 days gave a measured value of k = 1.3806514(48)x10^-23 J/K, for which the relative standard uncertainty is 3.5x10^-6 and the relative offset from the CODATA 2010 value is +1.9x10^-6.

  6. Examining triage patterns of inhalation injury and toxic epidermal necrolysis-Stevens Johnson syndrome.

    Science.gov (United States)

    Davis, James S; Pandya, Reeni K; Pizano, Louis R; Namias, Nicholas; Dearwater, Stephen; Schulman, Carl I

    2013-01-01

    The American Burn Association recommends that patients with toxic epidermal necrolysis-Stevens Johnson syndrome (TEN-SJS) or burn inhalation injuries would benefit from admission or transfer to a burn center (BC). This study examines to what extent those criteria are observed within a regional burn network. Hospital discharge data from 2000 to 2010 was obtained for all hospitals within the South Florida regional burn network. Patients with International Classification of Disease-9th revision discharge diagnoses for TEN-SJS or burn inhalation injury and their triage destination were compared using burn triage referral criteria to determine whether the patients were triaged differently from American Burn Association recommendations. Two hundred ninety-nine TEN-SJS and 131 inhalation injuries were admitted to all South Florida hospitals. Only 25 (8.4%) of TEN-SJS and 27 (21%) of inhalation injuries were admitted to the BC. BC patients had greater length of stay (TEN-SJS 22 vs 10 days; inhalation 13 vs 7) and were more likely to be funded by charity or be self-paid (TEN-SJS 24 vs 9.5%, P = .025; inhalation 44 vs 14%, P burn network. Unfamiliarity with triage criteria, patient insurance status, and overcoding may play a role. Further studies should fully characterize the problem and implement education or incentives to encourage more appropriate triage.

  7. Preliminary Results of Subsurface Exploration and Monitoring at the Johnson Creek Landslide, Lincoln County, Oregon

    Science.gov (United States)

    Schulz, William H.; Ellis, William L.

    2007-01-01

    The Johnson Creek landslide is a translational, primarily bedrock landslide located along the Oregon coast about 5 km north of Newport. The landslide has damaged U.S. Highway 101 many times since construction of the highway and at least two geological and geotechnical investigations of the landslide have been performed by Oregon State agencies. In cooperation with the Oregon Department of Geology and Mineral Industries and the Oregon Department of Transportation, the U.S. Geological Survey upgraded landslide monitoring systems and installed additional monitoring devices at the landslide beginning in 2004. Monitoring devices at the landslide measured landslide displacement, rainfall, air temperature, shallow soil-water content, and ground-water temperature and pressure. The devices were connected to automatic dataloggers and read at one-hour and, more recently, 15-minute intervals. Monitoring results were periodically downloaded from the dataloggers using cellular telemetry. The purposes of this report are to describe and present preliminary monitoring data from November 19, 2004, to March 31, 2007.

  8. Ultrastructure of Kupffer cells and hepatocytes in the Dubin-Johnson syndrome: A case report

    Institute of Scientific and Technical Information of China (English)

    Maria Elzbieta Sobaniec-Lotowska; Dariusz Marek Lebensztejn

    2006-01-01

    Ultrastructure of Kupffer cells and hepatocytes in liver bioptate was evaluated in a 17-year-old boy with Dubin -Johnson syndrome (DJS). The liver tissue obtained by needle biopsy was fixed in glutaraldehyde and paraformaldehyde and routinely processed for electron microscopic analysis. The ultrastructural examinations of liver bioptate revealed the accumulation of membranebound, electron-dense lysosomal granules within the cytoplasm of hepatocytes, characteristic of DJS. They were located mainly in the vicinity of the biliary pole, and preferentially in the centrilobular region that corresponded to the pigment deposits seen under light microscope. The presence of the granules was accompanied by dilated elements of the granular endoplasmic reticulum and paracrystalline mitochondrial inclusions as well as dilation of the bile canaliculi. The changes in hepatocytes coexisted with marked stimulation and enhanced phagocytic activity of Kupffer cells. This was manifested in the accumulation of pigment deposits within their cytoplasm that corresponded to those observed in hepatocytes.Hyperactive pericentral Kupffer cells which are involved in the response to pigmentary material originating from disintegrated hepatocytes may play an essential role in the development of DJS.

  9. Dubin-Johnson syndrome with multiple liver cavernous hemangiomas: report of a familial case.

    Science.gov (United States)

    Li, Peifeng; Wang, Yingmei; Zhang, Jinmei; Geng, Ming; Li, Zengshan

    2013-01-01

    Dubin-Johnson syndrome (DJS) is a rare autosomal recessive inheritance disorder of bilirubin metabolism. Herein we reported a complicated but interesting case which is readily resulted in misdiagnosis or an indefinite diagnosis, and this is the first reported familial case of DJS with multiple liver cavernous hemangiomas. A 49-year-old man was referred to our hospital for jaundice and multiple low-density liver masses. Extensive laboratory investigations showed conjugated hyperbilirubinaemia and positive urine bilirubin. Microscopically, lesions were composed of blood-filled vascular channels of various sizes lined by a single layer of flat endothelial cells supported by fibrous tissue. Coarse brown granules presented in the hepatocytes of the liver lobules locating beside the tumor, particularly in the centrilobular hepatocytes, and the granules showed blue-green with Schmorl's reaction lipofuscin staining. Interestingly, one of the patient's six siblings (female) shared the same condition with him. The relationship between DJS and hemangiomas remains unclear, and it might be contributed to some hereditary factors, or probably occurred simultaneously by chance. It was certified that the true reason for the long-term unclear jaundice was DJS, which was presumed clinically to be caused by bile excretion obstacles associated with the hemangiomas. Liver biopsy and histochemical stain may be helpful to identify the reason of jaundice and avoid misdiagnosis or an indefinite diagnosis.

  10. Hepatectomy in a hepatocellular carcinoma case with Dubin-Johnson syndrome and indocyanine green excretory defect.

    Science.gov (United States)

    Aoki, Hideki; Morihiro, Toshiaki; Arata, Takashi; Kanaya, Nobuhiko; Takeda, Shou; Ninomiya, Takayuki; Seita, Masayuki; Katsuda, Kou; Tanakaya, Kohji; Takeuchi, Hitoshi

    2013-02-01

    A 77-year-old male patient with history of jaundice was referred to our hospital for treatment of hepatocellular carcinoma (HCC). He was found to have Dubin-Johnson syndrome (DJS), a clinical feature of constitutional jaundice with conjugated hyperbilirubinemia, and indocyanine green (ICG) excretory defect, both of which are rare conditions. Total bilirubin was 5.1 mg/dl and ICG retention at 15 min (ICGR15) (77.1 %). Converted ICGR15 from GSA scintigraphy was 15.9 %. Resection of the medial segment and ventral region of the anterior segment of the liver as well as cholecystectomy were performed. The background of the liver tissue was blackish yellow and consistent with DJS and chronic hepatitis. Although total bilirubin level increased to 8.2 mg/dl on the 2nd postoperative day, the patient ultimately recovered and he was discharged on the 14th day. His 1- and 2-year medical checkups indicated recurrence of HCC. He underwent transarterial chemoembolization and is presently doing well 39 months after surgery. We report here on evaluation and treatment of patients with such disorders.

  11. Normal Metal Hot-Electron Nanobolometer with Johnson Noise Thermometry Readout

    CERN Document Server

    Karasik, Boris S; Reck, Theodore J; Prober, Daniel E

    2014-01-01

    The sensitivity of a THz hot-electron nanobolometer (nano-HEB) made from a normal metal is analyzed. Johnson Noise Thermometry (JNT) is employed as a readout technique. In contrast to its superconducting TES counterpart, the normal-metal nano-HEB can operate at any cryogenic temperature depending on the required radiation background limited Noise Equivalent Power (NEP). It does not require bias lines; 100s of nano-HEBs can be read by a single low-noise X-band amplifier via a filter bank channelizer. The modeling predicts that even with the sensitivity penalty due to the amplifier noise, an NEP ~ 10$^{-20}$ - 10$^{-19}$ W/Hz$^{1/2}$ can be expected at 50-100 mK in 10-20 nm thin titanium (Ti) normal metal HEBs with niobium (Nb) contacts. This NEP is fairly constant over a range of readout frequencies ~ 10 GHz. Although materials with weaker electron-phonon coupling (bismuth, graphene) do not improve the minimum achievable NEP, they can be considered if a larger than 10 GHz readout bandwidth is required.

  12. Johnson and the Eighteenth–Century Periodical Essay: A Corpus–Based Approach

    Directory of Open Access Journals (Sweden)

    Paul Brocklebank

    2013-05-01

    Full Text Available The style of Samuel Johnson’s essays for the periodicals The Rambler, The Adventurer and The Idler is quite different from that of earlier eighteenth–century essayists such as Joseph Addison and Jonathan Swift. However, despite advances in recent years in corpus–based stylistic approaches to texts, a comparison of these three authors using current corpus–analytic techniques has yet to be attempted. This paper reports on the first stages of such a project. Johnson’s essays are compared with Addison and Swift’s essays using WordSmith Tools 5, and an analysis of keywords, semantic groupings of keywords, and key collocations of keywords in Johnson’s essays are identified. It is argued that a keyword analysis brings to the fore grammatical aspects of Johnsonian sentence patterns and provides empirical support for what have hitherto been only intuitively–based statements regarding his style. Also, further patterns in the data will be identified through a phraseological analysis of the essays focusing on the most common four–word clusters (4–grams that Johnson uses.

  13. Stevens-Johnson Syndrome and toxic epidermal necrolysis overlap due to oral temozolomide and cranial radiotherapy.

    Science.gov (United States)

    Sarma, Nilendu

    2009-01-01

    A 46-year-old man developed Stevens-Johnson syndrome and toxic epidermal necrolysis overlap, with severe localized denudation of the skin on the head and neck, following radiotherapy and oral temozolomide therapy for cranial glioblastoma multiforme. He also had a primary malignant fibrous histiocytoma of the thigh that was amputated 5 years earlier. A rash developed after 7 days of radio- and chemotherapy. It was an extensive maculopapular rash that started over the temporal area of the head and rapidly spread, sparing only the distal limbs. Radiotherapy and temozolomide were stopped on the tenth day but the rash rapidly progressed for the next 4-6 days. Following this, the spread halted and complete recovery was observed within the next 2 weeks. The peculiarity of the presentation in this case was that the brunt of the disease with severe skin denudation was localized to the surrounding areas of cranial radiotherapy. The patient was also receiving oral phenytoin, diclofenac, and parenteral dexamethasone before chemotherapy was started. These medications were continued, even after development of the skin rash, until well after full recovery from the skin lesions. After critical evaluation of disease onset, progression, and recovery, and their relationship to the introduction and withdrawal of different medicines, it appeared that either temozolomide alone or in combination with radiotherapy most probably triggered the condition.

  14. Summary of investigations of uranium deposits in the Pumpkin Buttes area, Johnson and Campbell Counties, Wyoming

    Science.gov (United States)

    Troyer, Max L.; McKay, Edward J.; Soister, Paul E.; Wallace, Stewart R.

    1954-01-01

    Uranium minerals were discovered in the Pumpkin Buttes area, Campbell and Johnson Counties, Wyo., by the U. S. Geological Survey in October 1951. From June to November 1952, an area of about 750 square miles was examined for uranium deposits, and 211 localities having abnormally high radioactivity were found; uranium minerals are visible at 121 of these localities. All known uranium mineralization in the area is restricted to sandstones of the Wasatch formation, except sparsely disseminated uranium in the sandstone of the White River formation, which caps the Pumpkin Buttes, mid several localities on the Great Pine Ridge southwest of the Pumpkin Buttes where iron-saturated sandstone and clinker in the Fort Union formation have above-normal radioactivity. The uranium occurrences in the Wasatch formation are in a red sandstone zone 450 to 900 feet above the base of the formation and are of two types: small concretionary masses of uranium, iron, manganese and vanadium minerals in sandstone, and irregular zones in which uranium minerals are disseminated in sandstone. The second type is usually larger but of lower grade than the first. Most of the localities at which uranium occurs are in a north-trending belt about 60 miles long and 18 miles in maximum width.

  15. Stevens-Johnson syndrome / toxic epidermal necrolysis: an Asia-Pacific perspective.

    Science.gov (United States)

    Thong, Bernard Yu-Hor

    2013-10-01

    Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) are severe cutaneous adverse reactions (SCAR) to drugs which are associated with significant morbidity and mortality. High risk drugs in Asia are similar to those reported worldwide. Human leukocyte antigen (HLA)-related risk alleles for carbamazepine and allopurinol SCAR are unique to Asians. Although prognostic scoring systems like the SCORTEN have been used for more than a decade, pitfalls and caveats need to be recognized, in particular in patients with multiple medical co-morbidities and systemic features in SJS/TEN. In centres without a tertiary Burns Centre, SJS/TEN patients can still be managed successfully in general and dermatology wards with well-executed supportive/nursing care. Controversy remains regarding the effectiveness of immunomodulation in reducing SJS/TEN morbidity, mortality and hastening re-epithelialization. Despite paucity of robust evidence, intravenous immunoglobulins and ciclosporin remain the most commonly used modalities worldwide. Acute and long-term ocular effects are an important source of morbidity for which emerging ophthalmic therapies appear promising. Quality of life issues have now become an important outcome in patients with SJS/TEN as they often impact survivors' future attitudes towards pharmacotherapy. Even though pharmacogenetic testing for high-risk drugs appears to be the panacea for preventing carbamazepine- and allopurinol-induced SJS/TEN in ethnic Asians, many issues remain before health regulators in our region can conclusively determine whether testing should be made mandatory or highly recommended as standard of care.

  16. A depositional model for the Taylor coal bed, Martin and Johnson counties, eastern Kentucky

    Science.gov (United States)

    Andrews, W.M.; Hower, J.C.; Ferm, J.C.; Evans, S.D.; Sirek, N.S.; Warrell, M.; Eble, C.F.

    1996-01-01

    This study investigated the Taylor coal bed in Johnson and Martin counties, eastern Kentucky, using field and petrographic techniques to develop a depositional model of the coal bed. Petrography and chemistry of the coal bed were examined. Multiple benches of the Taylor coal bed were correlated over a 10 km distance. Three sites were studied in detail. The coal at the western and eastern sites were relatively thin and split by thick clastic partings. The coal at the central site was the thickest and unsplit. Two major clastic partings are included in the coal bed. Each represents a separate and distinct fluvial splay. The Taylor is interpreted to have developed on a coastal plain with periodic flooding from nearby, structurally-controlled fluvial systems. Doming is unlikely due to the petrographic and chemical trends, which are inconsistent with modern Indonesian models. The depositional history and structural and stratigraphic setting suggest contemporaneous structural influence on thickness and quality of the Taylor coal bed in this area.

  17. Stevens–Johnson syndrome/toxic epidermal necrolysis caused by cefadroxil in a cat

    Directory of Open Access Journals (Sweden)

    Roberta Sartori

    2016-06-01

    Full Text Available Case summary A 5-year-old, spayed female, indoor-only domestic shorthair cat was referred with an acute history of multifocal cutaneous and mucocutaneous erosive-ulcerative lesions and skin detachment. The lesions occurred on the seventh day of therapy with cefadroxil. Erosive-ulcerative and occasionally crusted lesions were apparent on the medial and lateral canthus of both eyes, ventral neck, abdomen, perivulvar region, periungual skin and medial aspect of the front and hindlimbs. Diffuse and severe exfoliation was present on the dorsum and tail base and in both external ear canals. The cat was also dehydrated, tachycardic and febrile. Histopathological examination revealed extensive epidermal ulceration, interface dermatitis with vacuolar degeneration, apoptosis at multiple epidermal levels and basal, suprabasal and spinous dermoepidermal detachment. The histopathological diagnosis was consistent with Stevens–Johnson syndrome/toxic epidermal necrolysis (SJS/TEN. The recently reported Algorithm of Drug Causality in Epidermal Necrolysis (ALDEN, currently used in human medicine, was applied and a score of +6 was calculated; this supported the view that SJS/TEN in this cat was very likely to be associated with cefadroxil administration. Relevance and novel information This clinical communication reports cefadroxil as a very probable cause of SJS/TEN in a cat; the ALDEN was applied in this case and supported diagnosis.

  18. Ultrastructure of Kupffer cells and hepatocytes in the Dubin-Johnson syndrome: a case report.

    Science.gov (United States)

    Sobaniec-Lotowska, Maria Elzbieta; Lebensztejn, Dariusz Marek

    2006-02-14

    Ultrastructure of Kupffer cells and hepatocytes in liver bioptate was evaluated in a 17-year-old boy with Dubin-Johnson syndrome (DJS). The liver tissue obtained by needle biopsy was fixed in glutaraldehyde and paraformaldehyde and routinely processed for electron microscopic analysis. The ultrastructural examinations of liver bioptate revealed the accumulation of membrane-bound, electron-dense lysosomal granules within the cytoplasm of hepatocytes, characteristic of DJS. They were located mainly in the vicinity of the biliary pole, and preferentially in the centrilobular region that corresponded to the pigment deposits seen under light microscope. The presence of the granules was accompanied by dilated elements of the granular endoplasmic reticulum and paracrystalline mitochondrial inclusions as well as dilation of the bile canaliculi. The changes in hepatocytes co-existed with marked stimulation and enhanced phagocytic activity of Kupffer cells. This was manifested in the accumulation of pigment deposits within their cytoplasm that corresponded to those observed in hepatocytes. Hyperactive pericentral Kupffer cells which are involved in the response to pigmentary material originating from disintegrated hepatocytes may play an essential role in the development of DJS.

  19. Modified Becke-Johnson exchange potential: improved modeling of lead halides for solar cell applications

    Directory of Open Access Journals (Sweden)

    Radi A. Jishi

    2016-01-01

    Full Text Available We report first-principles calculations, within density functional theory, on the lead halide compounds PbCl2, PbBr2, and CH3NH3PbBr3−xClx, taking into account spin-orbit coupling. We show that, when the modified Becke-Johnson exchange potential is used with a suitable choice of defining parameters, excellent agreement between calculations and experiment is obtained. The computational model is then used to study the effect of replacing the methylammonium cation in CH3NH3PbI3 and CH3NH3PbBr3 with either N2H5+or N2H3+, which have slightly smaller ionic radii than methylammonium. We predict that a considerable downshift in the values of the band gaps occurs with this replacement. The resulting compounds would extend optical absorption down to the near-infrared region, creating excellent light harvesters for solar cells.

  20. A Potential Dubin-Johnson Syndrome Imaging Agent: Synthesis, Biodistribution, and MicroPET Imaging

    Directory of Open Access Journals (Sweden)

    Jeongsoo Yoo

    2005-01-01

    Full Text Available Dubin-Johnson syndrome (DJS is caused by a deficiency of the human canalicular multispecific organic anion transporter (cMOAT. A new lipophilic copper-64 complex of 1,4,7-tris(carboxymethyl-10-(tetradecyl-1,4,7,10-tetraazadodecane (5 was prepared and evaluated for potential as a diagnostic tool for DJS. The prepared ligand was labeled with 64Cu citrate in high radiochemical purity. In vivo uptake and clearance of the complex was determined through biodistribution studies using normal Sprague-Dawley rats and mutant cMOAT-deficient (TR− rats. In normal rats, the radioactive copper complex was cleared quickly from the body exclusively through the hepatic pathway. The 64Cu complex was taken up rapidly by the liver and quickly excreted into the small intestine and then the upper large intestine, whereas < 1% ID/organ was found in the kidney at all time points post injection. Whereas activity was accumulated continuously in the liver of TR− rats, it was not excreted into the small intestine. MicroPET studies of normal and TR rats were consistent with biodistribution data and showed dramatically different images. This study strongly suggests that cMOAT is involved in excretion of 64Cu-5. The significant difference between the biodistribution data and microPET images of the normal and TR− rats demonstrates that this new 64Cu complex may allow noninvasive diagnosis of DJS in humans.

  1. Atmospheric environment for Space Shuttle (STS-4) launch

    Science.gov (United States)

    Johnson, D. L.; Hill, C. K.; Batts, G. W.

    1982-01-01

    Selected atmospheric conditions observed near space shuttle STS-4 launch time on June 27, 1982, at Kennedy Space Center, Florida are summarized. Values of ambient pressure, temperature, moisture, ground winds, visual observations (cloud), and winds aloft are included. The sequence of prelaunch Jimsphere measured vertical wind profiles is given as well as the wind and thermodynamic parameters measured at the surface and aloft in the SRB descent/impact ocean area. Final meteorological tapes, which consist of wind descent were constructed. The STS-4 ascent meteorological data tape was constructed by Marshall Space Flight Center in response to shuttle task agreement No. 989-13-22-368 with Johnson Space Center.

  2. Atmospheric environment for Space Shuttle (STS-9) launch

    Science.gov (United States)

    Johnson, D. L.; Hill, C. K.; Batts, G. W.

    1984-01-01

    This report presents a summary of selected atmospheric conditions observed near Space Shuttle STS-9 launch time on November 28, 1983, at Kennedy Space Center, Florida. Values of ambient pressure, temperature, moisture, ground winds, visual observations (cloud), and winds aloft are included. The sequence of prelaunch Jimsphere measured vertical wind profiles is given in this report. The final meteorological tape, which consists of wind and thermodynamic parameters versus altitude, for STS-9 vehicle ascent has been constructed. The STS-9 ascent meteorological data tape has been constructed by Marshall Space Flight Center in response to Shuttle task agreement No. 561-81-22-368 with Johnson Space Center.

  3. Atmospheric environment for space shuttle (STS-13) launch

    Science.gov (United States)

    Johnson, D. L.; Hill, C. K.; Jasper, G.; Batts, G. W.

    1984-01-01

    Selected atmospheric conditions observed near Space Shuttle STS-13 launch time on April 6, 1984, at Kennedy Space Center Florida are summarized. Values of ambient pressure, temperature, moisture, ground winds, visual observations (cloud), and winds aloft are included. The sequence of prelaunch Jimsphere measured vertical wind profiles is given. The final meteorological tape, which consists of wind and thermodynamic parameters versus altitude, for STS-13 vehicle ascent was constructed by Marshall Space Flight Center in response to shuttle task agreement No. 561-81-22-368 with Johnson Space Center.

  4. Status and Monitoring of Natural and Supplemented Chinook Salmon in Johnson Creek, Idaho, 2006-2007 Annual Report.

    Energy Technology Data Exchange (ETDEWEB)

    Rabe, Craig D.; Nelson, Douglas D. [Nez Perce Tribe

    2008-11-17

    The Nez Perce Tribe Johnson Creek Artificial Propagation Enhancement Project (JCAPE) has conducted juvenile and adult monitoring and evaluation studies for its 10th consecutive year. Completion of adult and juvenile Chinook salmon studies were conducted for the purpose of evaluating a small-scale production initiative designed to increase the survival of a weak but recoverable spawning aggregate of summer Chinook salmon Oncorhynchus tshawytscha. The JCAPE program evaluates the life cycle of natural origin (NOR) and hatchery origin (HOR) supplementation fish to quantify the key performance measures: abundance, survival-productivity, distribution, genetics, life history, habitat, and in-hatchery metrics. Operation of a picket style weir and intensive multiple spawning ground surveys were completed to monitor adult Chinook salmon and a rotary screw trap was used to monitor migrating juvenile Chinook salmon in Johnson Creek. In 2007, spawning ground surveys were conducted on all available spawning habitat in Johnson Creek and one of its tributaries. A total of 63 redds were observed in the index reach and 11 redds for all other reaches for a combined count of 74 redds. Utilization of carcass recovery surveys and adult captures at an adult picket weir yielded a total estimated adult escapement to Johnson Creek of 438 Chinook salmon. Upon deducting fish removed for broodstock (n=52), weir mortality/ known strays (n=12), and prespawning mortality (n=15), an estimated 359 summer Chinook salmon were available to spawn. Estimated total migration of brood year 2005 NOR juvenile Chinook salmon at the rotary screw trap was calculated for three seasons (summer, fall, and spring). The total estimated migration was 34,194 fish; 26,671 of the NOR migrants left in the summer (July 1 to August 31, 2005) as fry/parr, 5,852 left in the fall (September 1 to November 21, 2005) as presmolt, and only 1,671 NOR fish left in the spring (March 1 to June 30, 2006) as smolt. In addition, there

  5. Stevens-Johnson syndrome and toxic epidermal necrolysis: an update on pharmacogenetics studies in drug-induced severe skin reaction.

    Science.gov (United States)

    Rufini, Sara; Ciccacci, Cinzia; Politi, Cristina; Giardina, Emiliano; Novelli, Giuseppe; Borgiani, Paola

    2015-11-01

    Stevens-Johnson syndrome and toxic epidermal necrolysis are severe, life-threatening drug reactions involving skin and membranes mucous, which are associated with significant morbidity and mortality and triggered, especially by drug exposure. Different studies have demonstrated that drug response is a multifactorial character and that the interindividual variability in this response depends on both environmental and genetic factors. The last ones have a relevant significance. In fact, the identification of new specific genetic markers involved in the response to drugs, will be of great utility to establish a more personalized therapeutic approach and to prevent the appearance of these adverse reactions. In this review, we summarize recent progresses in the Pharmacogenetics studies related to Stevens-Johnson syndrome/toxic epidermal necrolysis reporting the major genetic factors identified in the last years as associated with the disease and highlighting the use of some of these genomic variants in the clinical practice.

  6. Famous people with Tourette's syndrome: Dr. Samuel Johnson (yes) & Wolfgang Amadeus Mozart (may be): Victims of Tourette's syndrome?

    Science.gov (United States)

    Bhattacharyya, Kalyan B; Rai, Saurabh

    2015-01-01

    Tourette's syndrome is a clinical condition characterized by multiple motor tics and vocal tics which occurs in the age range 5-25 years and the intensity of the symptoms changes with time. It is felt that at least two remarkable personalities namely, Dr. Samuel Johnson from England, a man of letters and the compiler of the first ever English dictionary, and Wolfgang Amadeus Mozart from Austria, one of the greatest musical genius of all time, possibly suffered from this condition. Tourette's syndrome is often described as the classical borderzone between neurology and psychiatry and every neurologist wonders at the curious and fascinating clinical features of this condition. It seems that at least two remarkable personalities, Dr. Samuel Johnson, a man of letters and the first person to compile an English dictionary, and Wolfgang Amadeus Mozart, arguably the most creative musical composer of all time, were possibly afflicted with this condition.

  7. Uncovering Underlying Assumptions Regarding Education and Technology in Educational Reform Efforts A conversation with Dr. Larry Johnson

    Directory of Open Access Journals (Sweden)

    Gabriela Melano

    2000-11-01

    Full Text Available Educational systems around the world, and specifically in the United States, have long been awaiting for genuine reform efforts. Technology is often perceived as a panacea, if not as a crucial instrument in any educational reform effort. In a conversation with one of his students, Doctor Johnson discusses how the underlying assumptions embedded in our current schooling practices need to be seriously reviewed before any technology strategy is considered. New understandings, as opposed to mere information, is what schools need to reach in order to transform themselves. Finally, Dr. Johnson provides two brief examples, one in the United States and another in México, were hermeneutical approaches have been used for educational reform endeavors.

  8. NASA Pathways Internship: Spring 2016

    Science.gov (United States)

    Alvarez, Oscar, III

    2016-01-01

    I was selected to contribute to the Data Systems and Handling Branch under the Avionics Flight Systems Division at the Lyndon B. Johnson Space Center in Houston, Texas. There I used my knowledge from school, as well as my job experience from the military, to help me comprehend my assigned project and contribute to it. With help from my mentors, supervisors, colleagues, and an excellent NASA work environment, I was able to learn, as well as accomplish, a lot towards my project. Not only did I understand more about embedded systems, microcontrollers, and low-level programming, I also was given the opportunity to explore the NASA community.

  9. Remote Sensing in Polarized Light

    Science.gov (United States)

    Whitehead, Victor S.; Coulson, Kinsell L.

    1988-01-01

    Preliminary analysis of polarized images of earth collected by hand-held cameras on Shuttle Missions 51A, 51G, 51I, and 61A indicate that information of the earth's surface and atmosphere exists in those data. To ensure that follow-on research in polarization is focused upon and that the experiments are properly designed to address specific questions, 26 scientists with past experience and interest in polarization observations met at the Lyndon B. Johnson Space Center on November 3 to 5, 1987. This conference report summarizes the discussions and provides the recommendations of the group for follow-on research.

  10. Stevens - Johnson Syndrome Induced by Combination of Lamotrigine and Valproic Acid in a 9-Year-Old Boy

    LENUS (Irish Health Repository)

    Maduemem, K

    2017-06-01

    We describe the case history of a 9-year-old boy who developed Stevens-Johnson syndrome (SJS) following concomitant use of valproic acid and lamotrigine. He presented with rash and fever several weeks after introduction of lamotrigine, having been on valproic acid for seizure disorder. SJS happens to be one of the rare adverse reactions of antiepilepsy drugs (AED). Management is mainly supportive with care escalation when necessary because of the significant morbidity.

  11. Stevens–Johnson syndrome and toxic epidermal necrolysis in an academic hospital setting: a 5-year retrospective study

    OpenAIRE

    Ewa Stocka-Łabno; Natalia Gabzdyl; Magdalena Misiak-Galazka; Małgorzata Pawłowska-Kisiel; Tomasz Łazowski; Lidia Rudnicka

    2016-01-01

    Introduction: Toxic epidermal necrolysis and Stevens–Johnson syndrome are acute life-threatening mucocutaneous reactions to drugs. The aims of the study were to identify these drugs and characterize population prone to these reactions. Materials and Methods: Data including demographics, culprit drug, clinical characteristics, course of disease, treatment given, and therapeutic responses were retrospectively collected from medical records of 31 patients admitted to Department of Dermatolog...

  12. Determination of parameters of the Johnson-Cook model for the description of deformation and fracture of titanium alloys

    Science.gov (United States)

    Buzyurkin, A. E.; Gladky, I. L.; Kraus, E. I.

    2015-03-01

    Stress-strain curves of dynamic loading of VT6, OT4, and OT4-0 titanium-based alloys are constructed on the basis of experimental data, and the Johnson-Cook model parameters are determined. Results of LS-DYNA simulations of the processes of deformation and fracture of the fan casing after its high-velocity impact with a fan blade simulator are presented.

  13. A Case of Multiple Sexually Transmitted Diseases(STDs), with Stevens-Johnson Syndrome and Mediastinal Tumor

    Institute of Scientific and Technical Information of China (English)

    CHEN Yuping(陈玉平); XIONG Lin(熊琳); RAN Yuping(冉玉平); TONG Yanfang(童燕芳)

    2002-01-01

    A 29-year-old man was admitted for erythema,papules and erosions. Erosions and purulent secretions were seen in the circumference of the mouth, eyes, oral mucosa,tongue, and preputium. Conjunctivas were swollen and the urethral orifice was red, both were accompanied by purulent secretions. Multiple vesicles were shown in the penis.The patient was diagnosed with: ① Stevens-Johnson syndrome; ② gonococcal ophthalmoblennorrhea; ③nongonococcal urethritis, gonococcal urethritis; ④genital herpes; ⑤mediastinal tumor.

  14. Theoretical isochrones in several photometric systems I. Johnson-Cousins-Glass, HST/WFPC2, HST/NICMOS, Washington, and ESO Imaging Survey filter sets

    CERN Document Server

    Girardi, L; Bressan, A; Chiosi, C; Groenewegen, M A T; Marigo, P; Salasnich, B; Weiss, A

    2002-01-01

    We provide tables of theoretical isochrones in several photometric systems. To this aim, the following steps are followed: (1) First, we re-write the formalism for converting synthetic stellar spectra into tables of bolometric corrections. The resulting formulas can be applied to any photometric system, provided that the zero-points are specified by means of either ABmag, STmag, VEGAmag, or a standard star system that includes well-known spectrophotometric standards. Interstellar absorption can be considered in a self-consistent way. (2) We assemble an extended and updated library of stellar intrinsic spectra. It is mostly based on non-overshooting ATLAS9 models, suitably extended to both low and high effective temperatures. This offers an excellent coverage of the parameter space of Teff, logg, and [M/H]. We briefly discuss the main uncertainties and points still deserving more improvement. (3) From the spectral library, we derive tables of bolometric corrections for Johnson-Cousins-Glass, HST/WFPC2, HST/NIC...

  15. An investigation of impact of Brand Extension on Parent Brand Image: A case study of Johnson, UK

    Directory of Open Access Journals (Sweden)

    Muhammad Shakil Ahmad

    2011-05-01

    Full Text Available Purpose of study: The main purpose of this study is to investigate the impact of brand extensions on parent brand image. For this purpose Johnson is selected as parent brand for current study. The selected brand extensions are Johnson shampoo, Johnson’s isotonic drinks, Johnson’s sportswear and Johnson’s suntan lotion. Research Methodology: sample was selected from Bradford, UK. Sample consists of consumer of Johnson including males as well as female. Total sample size is 250 and data was collected through self administered questionnaires. Convenience sampling was selected as sampling technique. Results: Correlation analysis indicated negative impact of brand extension on parent brand image if brand extension is done in different brand categories. Perceived brand quality and perceived brand fit of the extension also affect the parent brand image. Conclusion: It is concluded that if brand extension is done in the same product category of parent brand then there is possibly high acceptance for the brand extension rather than in the different product categories.

  16. White Anglo-Saxon hopes and black Americans' Atlantic dreams: Jack Johnson and the British boxing colour bar.

    Science.gov (United States)

    Runstedtler, Theresa

    2010-01-01

    This article examines the controversy surrounding Jack Johnson's proposed world heavyweight title fight against the British champion Bombardier Billy Wells in London (1911). In juxtaposing African Americans' often glowing discussions of European tolerance with the actual white resistance the black champion faced in Britain, including the Home Office's eventual prohibition of the match, the article explores the period's transnational discourses of race and citizenship. Indeed, as white sportsmen on both sides of the Atlantic joined together in their search for a "White Hope" to unseat Johnson, the boxing ring became an important cultural arena for interracial debates over the political and social divisions between white citizens and nonwhite subjects. Although African Americans had high hopes for their hero's European sojourn, the British backlash against the Johnson-Wells match underscored the fact that their local experiences of racial oppression were just one facet of a much broader global problem. At the same time, the proposed prizefight also made the specter of interracial conflict in the colonies all the more tangible in the British capital, provoking public discussions about the merits of U.S. racial segregation, along with the need for white Anglo-Saxon solidarity around the world. Thus, this article not only exposes the underlying connections between American Jim Crow and the racialized fault lines of British imperialism, but it also traces the "tense and tender ties" linking U.S. and African American history with the new imperial history and postcolonial studies.

  17. Delay/Disruption Tolerant Networks for Human Space Flight Video Project

    Science.gov (United States)

    Fink, Patrick W.; Ngo, Phong; Schlesinger, Adam

    2010-01-01

    The movie describes collaboration between NASA and Vint Cerf on the development of Disruption Tolerant Networks (DTN) for use in space exploration. Current evaluation efforts at Johnson Space Center are focused on the use of DTNs in space communications. Tests include the ability of rovers to store data for later display, tracking local and remote habitat inventory using radio-frequency identification tags, and merging networks.

  18. Spectral model selection in the electronic measurement of the Boltzmann constant by Johnson noise thermometry

    Science.gov (United States)

    Coakley, Kevin J.; Qu, Jifeng

    2017-04-01

    In the electronic measurement of the Boltzmann constant based on Johnson noise thermometry, the ratio of the power spectral densities of thermal noise across a resistor at the triple point of water, and pseudo-random noise synthetically generated by a quantum-accurate voltage-noise source is constant to within 1 part in a billion for frequencies up to 1 GHz. Given knowledge of this ratio, and the values of other parameters that are known or measured, one can determine the Boltzmann constant. Due, in part, to mismatch between transmission lines, the experimental ratio spectrum varies with frequency. We model this spectrum as an even polynomial function of frequency where the constant term in the polynomial determines the Boltzmann constant. When determining this constant (offset) from experimental data, the assumed complexity of the ratio spectrum model and the maximum frequency analyzed (fitting bandwidth) dramatically affects results. Here, we select the complexity of the model by cross-validation—a data-driven statistical learning method. For each of many fitting bandwidths, we determine the component of uncertainty of the offset term that accounts for random and systematic effects associated with imperfect knowledge of model complexity. We select the fitting bandwidth that minimizes this uncertainty. In the most recent measurement of the Boltzmann constant, results were determined, in part, by application of an earlier version of the method described here. Here, we extend the earlier analysis by considering a broader range of fitting bandwidths and quantify an additional component of uncertainty that accounts for imperfect performance of our fitting bandwidth selection method. For idealized simulated data with additive noise similar to experimental data, our method correctly selects the true complexity of the ratio spectrum model for all cases considered. A new analysis of data from the recent experiment yields evidence for a temporal trend in the offset

  19. Qualidade de vida dos pacientes portadores de síndrome de Stevens-Johnson

    Directory of Open Access Journals (Sweden)

    Nogueira Ruth

    2003-01-01

    Full Text Available OBJETIVO: Avaliar a qualidade de vida dos pacientes portadores de síndrome de Stevens-Johnson. MÉTODOS: Foram avaliados 14 pacientes com SSJ no período de 1998 e 1999 no Setor de Córnea do Departamento de Oftalmologia da UNIFESP. Empregou-se o questionário S. F. 36 - pesquisa em saúde. A pontuação indica melhor condição de saúde. A mesma avaliação foi repetida quatro vezes em intervalo de três meses. RESULTADOS: As médias das médias das 4 avaliações dos 14 pacientes apresentaram importante redução dos seus valores em todos os subitens do S.F. 36 (41,04±22,38 para aspectos físicos, 53,82±22,82 para aspectos sociais, 26,24±22,46 para aspectos emocionais, 34,95±25,45 para capacidade funcional, 42,03±31,85 para dor, 46,33±18,37 para vitalidade, 46,18±24,83 para saúde mental e 50,26±16,29 para saúde geral. CONCLUSÃO: O questionário S.F. 36 representa método adequado de avaliação de aspectos físicos e emocionais em pacientes com baixa de acuidade visual, que nos permitiu detectar comprometimento importante nas funções básicas dos pacientes com SSJ. Mais pacientes com maior tempo de seguimento são necessários para aprimorar a análise de qualidade de vida nesses pacientes e avaliar os efeitos do acompanhamento psicológico.

  20. Use of Video Directly Observed Therapy for Treatment of Latent Tuberculosis Infection - Johnson County, Kansas, 2015.

    Science.gov (United States)

    Holzschuh, Elizabeth Lawlor; Province, Stacie; Johnson, Krystle; Walls, Caitlin; Shemwell, Cathy; Martin, Gary; Showalter, Amy; Dunlay, Jennifer; Conyers, Andrew; Griffin, Phil; Tausz, Nancy

    2017-04-14

    Tuberculosis (TB) is caused by the bacterium Mycobacterium tuberculosis and is spread from person to person through the air. TB can be spread in congregate settings, such as school environments, to varying degrees, based on factors including duration of contact and air ventilation (1); therefore, evaluating potential contacts and exposures can be challenging. In February 2015, a student at a Kansas high school received a diagnosis of active pulmonary TB disease. Screening of 385 (91%) school contacts, four (100%) household contacts, and 19 (90%) social contacts resulted in the identification of 50 persons with latent TB infection. Johnson County Department of Health and Environment (JCDHE) Public Health Emergency Preparedness personnel used their experience with points of distribution logistics to optimize testing clinic layouts and implement the incident command structure. Open communication with students, school staff members, the public, and the media about the investigation from the outset was imperative to reduce rumors and unease that can accompany a large communicable disease investigation. The large number of persons needing treatment for latent TB overwhelmed JCDHE's two TB nurses. As a result, JCDHE developed a policy and procedure to allow persons who met eligibility requirements to complete 12 weekly doses of isoniazid and rifapentine treatment using video directly observed therapy (VDOT) rather than traditional in-person directly observed therapy (DOT). This procedure facilitated treatment compliance and completion; among the eligible 15 persons who chose the 12-week VDOT option, 14 (93%) completed treatment. State and local health departments might consider use of VDOT to monitor treatment of persons with latent TB infection.

  1. Stevens-johnson syndrome associated with drugs and vaccines in children: a case-control study.

    Directory of Open Access Journals (Sweden)

    Umberto Raucci

    Full Text Available OBJECTIVE: Stevens-Johnson Syndrome (SJS is one of the most severe muco-cutaneous diseases and its occurrence is often attributed to drug use. The aim of the present study is to quantify the risk of SJS in association with drug and vaccine use in children. METHODS: A multicenter surveillance of children hospitalized through the emergency departments for acute conditions of interest is currently ongoing in Italy. Cases with a diagnosis of SJS were retrieved from all admissions. Parents were interviewed on child's use of drugs and vaccines preceding the onset of symptoms that led to the hospitalization. We compared the use of drugs and vaccines in cases with the corresponding use in a control group of children hospitalized for acute neurological conditions. RESULTS: Twenty-nine children with a diagnosis of SJS and 1,362 with neurological disorders were hospitalized between 1(st November 1999 and 31(st October 2012. Cases were more frequently exposed to drugs (79% vs 58% in the control group; adjusted OR 2.4; 95% CI 1.0-6.1. Anticonvulsants presented the highest adjusted OR: 26.8 (95% CI 8.4-86.0. Significantly elevated risks were also estimated for antibiotics use (adjusted OR 3.3; 95% CI 1.5-7.2, corticosteroids (adjusted OR 4.2; 95% CI 1.8-9.9 and paracetamol (adjusted OR 3.2; 95% CI 1.5-6.9. No increased risk was estimated for vaccines (adjusted OR: 0.9; 95% CI 0.3-2.8. DISCUSSION: Our study provides additional evidence on the etiologic role of drugs and vaccines in the occurrence of SJS in children.

  2. POSSIBLE MECHANISMS OF THE EXCLUSION OF JOHNSON GRASS BY TALL GRASS PRAIRIES

    Directory of Open Access Journals (Sweden)

    Marilyn A. Semtner

    2012-12-01

    Full Text Available Historically, plant distribution typically has been studied with the purpose of learning why a species grows and survives where it does; but why a species does not survive in a particular habitat has rarely been studied, although it may be just as important. According to the US Department of Agriculture, Johnsongrass [Sorghum halepense (L. Pers.; formerly Johnson grass] is listed as an agricultural pest in most states south of the 42nd parallel. Control of Johnsongrass inagricultural fields involves various labor intensive cultural, mechanical, and chemical means. Release of a bio-control agent has not been suitable for intensively cropped areas. An agriculturally important weed and prominent member of early stage secondary succession, Johnsongrass is not present in later stages of prairie succession. Various environmental factors (biotic and abiotic that might be involved in restricting Johnsongrass survival were examined in this research. In two sites in Oklahoma, soil conditions were found to be more favorable for survival and growth of Johnsongrass in undisturbed prairie than in the disturbed areas in which Johnsongrass was found vigorously growing. However, even when its rhizomes were introduced into mature prairie, Johnsongrass did not thrive. In laboratory and field trials, presence of the living dominant prairie grasses or leachate from living or dead leaf blades seemed to influence growth and survival of Johnsongrass rhizomes. The prairie grasses, little bluestem [Schizachyrium scoparium (Michx. Nash] and Indian grass [Sorghastrum nutans (L. Nash], seem to play a similarallelopathic role in restricting the growth of Johnsongrass to outside of the prairies. Looking at this past study might lead to new methods for the future. (Semtner 2012

  3. Random-Resistor-Random-Temperature Kirchhoff-Law-Johnson-Noise (RRRT-KLJN Key Exchange

    Directory of Open Access Journals (Sweden)

    Kish Laszlo B.

    2016-03-01

    Full Text Available We introduce two new Kirchhoff-law-Johnson-noise (KLJN secure key distribution schemes which are generalizations of the original KLJN scheme. The first of these, the Random-Resistor (RR- KLJN scheme, uses random resistors with values chosen from a quasi-continuum set. It is well-known since the creation of the KLJN concept that such a system could work in cryptography, because Alice and Bob can calculate the unknown resistance value from measurements, but the RR-KLJN system has not been addressed in prior publications since it was considered impractical. The reason for discussing it now is the second scheme, the Random Resistor Random Temperature (RRRT- KLJN key exchange, inspired by a recent paper of Vadai, Mingesz and Gingl, wherein security was shown to be maintained at non-zero power flow. In the RRRT-KLJN secure key exchange scheme, both the resistances and their temperatures are continuum random variables. We prove that the security of the RRRT-KLJN scheme can prevail at a non-zero power flow, and thus the physical law guaranteeing security is not the Second Law of Thermodynamics but the Fluctuation-Dissipation Theorem. Alice and Bob know their own resistances and temperatures and can calculate the resistance and temperature values at the other end of the communication channel from measured voltage, current and power-flow data in the wire. However, Eve cannot determine these values because, for her, there are four unknown quantities while she can set up only three equations. The RRRT-KLJN scheme has several advantages and makes all former attacks on the KLJN scheme invalid or incomplete.

  4. Space of Spaces

    CERN Document Server

    Anderson, Edward

    2014-01-01

    Wheeler emphasized the study of Superspace - the space of 3-geometries on a spatial manifold of fixed topology. This is a configuration space for GR; knowledge of configuration spaces is useful as regards dynamics and QM.In this Article I consider furthmore generalized configuration spaces to all levels within the conventional `equipped sets' paradigm of mathematical structure used in fundamental Theoretical Physics. This covers A) the more familiar issue of topology change in the sense of topological manifolds (tied to cobordisms), including via pinched manifolds. B) The less familiar issue of not regarding as fixed the yet deeper levels of structure: topological spaces themselves (and their metric space subcase), collections of subsets and sets. Isham has previously presented quantization schemes for a number of these. I consider some classical preliminaries for this program, aside from the most obvious (classical dynamics for each). Rather, I provide I) to all levels Relational and Background Independence ...

  5. An improved electronic determination of the Boltzmann constant by Johnson noise thermometry

    Science.gov (United States)

    Qu, Jifeng; Benz, Samuel P.; Coakley, Kevin; Rogalla, Horst; Tew, Weston L.; White, Rod; Zhou, Kunli; Zhou, Zhenyu

    2017-08-01

    Recent measurements using acoustic gas thermometry have determined the value of the Boltzmann constant, k, with a relative uncertainty less than 1  ×  10-6. These results have been supported by a measurement with a relative uncertainty of 1.9  ×  10-6 made with dielectric-constant gas thermometry. Together, the measurements meet the requirements of the International Committee for Weights and Measures and enable them to proceed with the redefinition of the kelvin in 2018. In further support, we provide a new determination of k using a purely electronic approach, Johnson noise thermometry, in which the thermal noise power generated by a sensing resistor immersed in a triple-point-of-water cell is compared to the noise power of a quantum-accurate pseudo-random noise waveform of nominally equal noise power. The experimental setup differs from that of the 2015 determination in several respects: a 100 Ω resistor is used as the thermal noise source, identical thin coaxial cables made of solid beryllium-copper conductors and foam dielectrics are used to connect the thermal and quantum-accurate noise sources to the correlator so as to minimize the temperature and frequency sensitivity of the impedances in the connecting leads, and no trimming capacitors or inductors are inserted into the connecting leads. The combination of reduced uncertainty due to spectral mismatches in the connecting leads and reduced statistical uncertainty due to a longer integration period of 100 d results in an improved determination of k  =  1.380 649 7(37)  ×  10-23 J K-1 with a relative standard uncertainty of 2.7  ×  10-6 and a relative offset of 0.89  ×  10-6 from the CODATA 2014 recommended value. The most significant terms in the uncertainty budget, the statistical uncertainty and the spectral-mismatch uncertainty, are uncorrelated with the corresponding uncertainties in the 2015 measurements.

  6. Flood-inundation maps for Indian Creek and Tomahawk Creek, Johnson County, Kansas, 2014

    Science.gov (United States)

    Peters, Arin J.; Studley, Seth E.

    2016-01-25

    Digital flood-inundation maps for a 6.4-mile upper reach of Indian Creek from College Boulevard to the confluence with Tomahawk Creek, a 3.9-mile reach of Tomahawk Creek from 127th Street to the confluence with Indian Creek, and a 1.9-mile lower reach of Indian Creek from the confluence with Tomahawk Creek to just beyond the Kansas/Missouri border at State Line Road in Johnson County, Kansas, were created by the U.S. Geological Survey in cooperation with the city of Overland Park, Kansas. The flood-inundation maps, which can be accessed through the U.S. Geological Survey Flood Inundation Mapping Science Web site at http://water.usgs.gov/osw/flood_inundation/, depict estimates of the areal extent and depth of flooding corresponding to selected water levels (stages) at the U.S. Geological Survey streamgages on Indian Creek at Overland Park, Kansas; Indian Creek at State Line Road, Leawood, Kansas; and Tomahawk Creek near Overland Park, Kansas. Near real time stages at these streamgages may be obtained on the Web from the U.S. Geological Survey National Water Information System at http://waterdata.usgs.gov/nwis or the National Weather Service Advanced Hydrologic Prediction Service at http://water.weather.gov/ahps/, which also forecasts flood hydrographs at these sites.Flood profiles were computed for the stream reaches by means of a one-dimensional step-backwater model. The model was calibrated for each reach by using the most current stage-discharge relations at the streamgages. The hydraulic models were then used to determine 15 water-surface profiles for Indian Creek at Overland Park, Kansas; 17 water-surface profiles for Indian Creek at State Line Road, Leawood, Kansas; and 14 water-surface profiles for Tomahawk Creek near Overland Park, Kansas, for flood stages at 1-foot intervals referenced to the streamgage datum and ranging from bankfull to the next interval above the 0.2-percent annual exceedance probability flood level (500-year recurrence interval). The

  7. Grouting of the cracks in the Arch 5-6 Daniel Johnson dam

    Energy Technology Data Exchange (ETDEWEB)

    Lariviere, R.; Routhier, L.; Roy, V.; Saleh, K.; Tremblay, S.

    1999-07-01

    The Daniel-Johnson dam is located 800 km northeast of Montreal, PQ, and is 1314 m in length and 214 m high. Just after completion of dam construction different types of cracks started to appear on the upstream and downstream faces. During and after the construction of the dam, numerous cracks and joints were grouted in order to reduce water infiltration. In some cases, as a result of high injection pressures and inaccurate methods, the injections provoked the propagation of the existing cracks or the initiation of new ones. Because of this situation and to determine the contribution of injection to dam safety, in 1985, Hydro-Quebec applied a moratorium on all future injection work on the dam. Research work was initiated in 1986 in the areas of grouting materials, methods, equipment and behavioral analysis to establish a safe method for the injection of the cracks. A committee was formed in 1993 with members from various groups, in order to: carry out extensive behavioral analysis of the Arch 5-6 dam, carry out an investigation program in order to determine the cause of the increase of the water infiltration, undertake a structural analysis program in order to evaluate the impact of an injection on the safety of the dam, and identify the proper method and injection products to use. In 1997, as a result of the progress of the structural analysis studies and the injection research project, a decision was made to proceed with the injection of the dam. A description is included of the results of the investigation, recommendations and results of the injection research project, as well as some details of the grouting campaign carried out in January 1999. On the whole, a better knowledge was acquired of the structure, of the plunging cracks and the behaviour of the dam during the injection. In the field of injection methods, materials and equipment, research work was invaluable when it came to the injection of micro-fine cracks in concrete dams. 5 refs., 8 figs.

  8. Uncertainty from synergistic effects of multiple parameters in the Johnson and Ettinger (1991) vapor intrusion model

    Science.gov (United States)

    Tillman, Fred D.; Weaver, James W.

    Migration of volatile chemicals from the subsurface into overlying buildings is known as vapor intrusion (VI). Under certain circumstances, people living in homes above contaminated soil or ground water may be exposed to harmful levels of these vapors. VI is a particularly difficult pathway to assess, as challenges exist in delineating subsurface contributions to measured indoor-air concentrations as well as in adequate characterization of subsurface parameters necessary to calibrate a predictive flow and transport model. Often, a screening-level model is employed to determine if a potential indoor inhalation exposure pathway exists and, if such a pathway is complete, whether long-term exposure increases the occupants' risk for cancer or other toxic effects to an unacceptable level. A popular screening-level algorithm currently in wide use in the United States, Canada and the UK for making such determinations is the "Johnson and Ettinger" (J&E) model. Concern exists over using the J&E model for deciding whether or not further action is necessary at sites as many parameters are not routinely measured (or are un-measurable). Many screening decisions are then made based on simulations using "best estimate" look-up parameter values. While research exists on the sensitivity of the J&E model to individual parameter uncertainty, little published information is available on the combined effects of multiple uncertain parameters and their effect on screening decisions. This paper presents results of multiple-parameter uncertainty analyses using the J&E model to evaluate risk to humans from VI. Software was developed to produce automated uncertainty analyses of the model. Results indicate an increase in predicted cancer risk from multiple-parameter uncertainty by nearly a factor of 10 compared with single-parameter uncertainty. Additionally, a positive skew in model response to variation of some parameters was noted for both single and multiple parameter uncertainty analyses

  9. Cefotaxime-induced Stevens and ndash;Johnson syndrome: a case report

    Directory of Open Access Journals (Sweden)

    M. Ravishankar

    2015-02-01

    Full Text Available Stevens and ndash;Johnson syndrome (SJS and toxic epidermal necrolysis are two forms of a life-threatening skin condition, in which cell death causes the epidermis to separate from the dermis. The syndrome is thought to be a hypersensitivity complex that affects the skin and the mucous membranes. The most well-known causes are certain medications, but it can also be due to infections, or more rarely, cancers. SJS usually begins with fever, sore throat, and fatigue, which is commonly misdiagnosed and therefore treated with antimicrobials. Ulcers and other lesions begin to appear in the mucous membranes, almost always in the mouth and lips, but also in the genital and anal regions. Conjunctivitis of the eyes occurs in about 30% of children who develop SJS. A rash of round lesions about an inch across arises on the face, trunk, arms and legs, and soles of the feet, but usually not the scalp. SJS is a medical emergency that usually requires hospitalization. Treatment focuses on eliminating the underlying cause, controlling symptoms and minimizing complications. Recovery after SJS can take weeks to months, depending on the severity of the condition. If it was caused by a medication, then the medication and others closely related to it has to be avoided permanently. An 18-month-old male child was admitted to a private health setup in Kolar with the complaints of peeling and discoloration of the skin, ulcerations in the oral cavity, eyelids, and genitalia. The parents gave the history of cefotaxime injection being administered to the child for treating typhoid 20 days back. Seven days after the administration of cefotaxime, the child had developed maculo-papular lesions all over the body. Later on there was peeling and discoloration of the skin. Itching was present. Ulcerations in the oral cavity, eyelids and genitalia were also noticed by the parents, who then brought the child to the health care center. According to the Naranjo's adverse drug

  10. Detailed requirements document for Stowage List and Hardware Tracking System (SLAHTS). [computer based information management system in support of space shuttle orbiter stowage configuration

    Science.gov (United States)

    Keltner, D. J.

    1975-01-01

    The stowage list and hardware tracking system, a computer based information management system, used in support of the space shuttle orbiter stowage configuration and the Johnson Space Center hardware tracking is described. The input, processing, and output requirements that serve as a baseline for system development are defined.

  11. Steven′s Johnson syndrome with toxic epidermal necrolysis due to thalidomide in a case of multiple myeloma

    Directory of Open Access Journals (Sweden)

    Anupam Das

    2014-01-01

    Full Text Available Thalidomide developed in 1954 for morning sickness had proven to be a teratogen and hence was withdrawn from market. Resurgence of thalidomide began as an immunomodulator when it was shown to be effective in the management of multiple myeloma and many conditions like erythema nodosum leprosum, graft versus host disease, recurrent aphthous ulcers etc. We report a case of Stevens Johnson syndrome-toxic epidermal necrolysis developing in an elderly male who was prescribed thalidomide after being diagnosed with multiple myeloma.

  12. The multicomponent (2+1)-dimensional Glachette-Johnson (GJ) equation hierarchy and its super-integrable coupling system

    Institute of Scientific and Technical Information of China (English)

    Yu Fa-Jun; Zhang Hong-Qing

    2008-01-01

    This paper presents a set of multicomponent matrix Lie algebra,which is used to construct a new loop algebra (A)M.By using the Tu scheme,a Liouville integrable multicomponent equation hierarchy is generated,which possesses the Hamiltonian structure.As its reduction cases,the multicomponent (2+1)-dimensional Glaehette-Johnson (GJ) hierarchy is given.Finally,the super-integrable coupling system of multicomponent (2+1)-dimensional GJ hierarchy is established through enlarging the spectral problem.

  13. Perovskite oxides MRuO3 (M = Sr, Ca and Ba: Structural distortion, electronic and magnetic properties with GGA and GGA-modified Becke–Johnson approaches

    Directory of Open Access Journals (Sweden)

    Labdelli Abbes

    2015-01-01

    Full Text Available Electronic and magnetic properties of transition-metal oxides are a continuing research theme due to the variety of ground states and their technological applications. In the present paper, we present first-principles calculations using the full-potential linear augmented plane-wave methods (FP-LAPW on the structural, electronic and magnetic properties of tree cubic (Pm–3m space group perovskite oxides SrRuO3, BaRuO3, and CaRuO3 in comparison with other phases ((4H four-layered hexagonal (P63/mmc space group, (2H two-layered hexagonal (P63/mmc space group and orthorhombic (Pnma space group. The current study is given within the density-functional theory basis DFT. The exchange-correlation potential is introduced by different approaches. We computed the equilibrium lattices, bulk modulus and its pressure derivatives and equilibrium volume. Our obtained results agree successfully with the theoretical and experimental data. The spin magnetic moments of these oxides have been obtained to investigate the magnetic properties. We report a detailed analysis of the different ground states properties for considerable oxides using GGA and GGA-modified Becke–Johnson computational approaches.

  14. Síndrome de Stevens-Johnson e necrólise epidérmica tóxica em medicina intensiva Stevens-Johnson syndrome and toxical epidermal necrolysis in intensive care medicine

    Directory of Open Access Journals (Sweden)

    Ana Carolina Pedigoni Bulisani

    2006-09-01

    Full Text Available JUSTIFICATIVA E OBJETIVOS: A Síndrome de Stevens Johnson (SSJ e Necrólise Epidérmica Tóxica (NET são reações cutâneas graves, com potencial para morbidade e mortalidade elevadas acometendo a pele e a membrana mucosa necessitando de cuidados de medicina intensiva. O objetivo deste artigo foi apresentar revisão da literatura sobre SSJ e NET. CONTEÚDO: Este artigo revisa os conceitos básicos, diagnóstico, quadro clínico e o princípio de tratamento em Unidade de Terapia Intensiva da SSJ e NET. CONCLUSÕES: Estas doenças caracterizam emergências dermatológicas e seu adequado manuseio e cuidado deve fazer parte do conhecimento rotineiro do médico intensivista.BACKGROUND AND OBJECTIVES: The Stevens Johnson Syndrome (SJS and Toxical Epidermal Necrolisys (TEN are important skin and mucosal lesions that need intensive care treatment. The aim of this article is to show a literature review about SJS and TEN. CONTENTS: This article reviews the concepts, diagnostic topics, clinical presentation and the principle of basic treatment in Intensive Care Unit for SJS and TEN. CONCLUSIONS: These illnesses are characterized as dermatological emergencies and its adequate management and cares must be part of the routine knowledge of the intensive care doctors.

  15. Dynamic constitutive relationship of TC16 titanium alloy based on Johnson-Cook model%基于Johnson-Cook模型的TC16钛合金动态本构关系

    Institute of Scientific and Technical Information of China (English)

    杨扬; 曾毅; 汪冰峰

    2008-01-01

    利用Instron液压实验机和分离式Hopkinson压杆动态加载实验,在温度为298~773 K、应变率为0.001~ 15 550/s范围内得到TC16钛合金的准静态拉伸及动态压缩条件下的真应力-真应变曲线,并基于Johnson-Cook模型对其进行拟合分析.提出拟合Johnson-Cook方程的简便方法:即引入材料应力-应变曲线发展趋势项,避免对材料绝热温升的估算.结果表明:真应力随应变速率的增加而增加,随温度的增加而降低;当应变速率为105/s及温度高于673 K时,材料此时的真应力低于准静态下的真应力;获得TC16动态本构关系,能较好地预测TC16钛合金的流变应力.

  16. Availability and Quality of Water from Underground Coal Mines in Johnson and Martin Counties, Kentucky

    Science.gov (United States)

    Mull, D.S.; Cordivio1a, Steven; Risser, Dennis W.

    1981-01-01

    This report provides water users with detailed information on the location, quantity, and quality of water available from underground coal mines in the Breathitt Formation of Pennsylvanian age in part of eastern Kentucky. The principal coal seams mined are the Van Lear in Johnson County and the Alma in Martin County. Coal mines that contained water were located by field inventory and coal-mine maps. The principal factors that affect the occurrence of water in coal mines are the size of the recharge area overlying the mine, the intensity and duration of precipitation, and the altitude of the mine relative to that of the nearest perennial stream. Ten above-drainage mines (that is, mines at higher elevations than that of the nearest perennial stream) are considered potential sources of water. Discharge from these mines ranged from 12 to 1,700 gallons per minute. The highest sustained discharge from a mine ranged from 750 to 1,200 gallons per minute. The water in coal mines is part of the hydrologic system and varies seasonally with precipitation. Annual discharge from most above-drainage mines ranged from 3 to 10 percent of annual precipitation on the 1and-surface area above the mine. Eight below-drainage mines are considered potential sources of water. Two were test-pumped at rates of 560 to 620 gallons per minute for as long as 6 hours. After test pumping the Warfield Mining No. 1 mine during September 1977 and March 1978, the recovery (or recharge) rates were significantly different. In September, the recharge rate was about 1,150 gallons per minute, but in March the recharge rate was 103,500 gallons per minute. This difference reflects the seasonal variations in the amount of water available to the ground-water system. Estimates of water stored in below-drainage mines ranged from 22 to 1,462 million gallons. This storage represents a safety factor sufficient to provide water through periods of limited recharge to the mine. Most mine water is of the calcium

  17. Preliminary design of a satellite observation system for Space Station Freedom

    Science.gov (United States)

    Cabe, Greg (Editor); Gallagher, Chris; Wilson, Brian; Rehfeld, James; Maurer, Alexa; Stern, Dan; Nualart, Jaime; Le, Xuan-Trang

    1992-01-01

    Degobah Satellite Systems (DSS), in cooperation with the University Space Research Association (USRA), NASA - Johnson Space Center (JSC), and the University of Texas, has completed the preliminary design of a satellite system to provide inexpensive on-demand video images of all or any portion of Space Station Freedom (SSF). DSS has narrowed the scope of the project to complement the work done by Mr. Dennis Wells at Johnson Space Center. This three month project has resulted in completion of the preliminary design of AERCAM, the Autonomous Extravehicular Robotic Camera, detailed in this design report. This report begins by providing information on the project background, describing the mission objectives, constraints, and assumptions. Preliminary designs for the primary concept and satellite subsystems are then discussed in detail. Included in the technical portion of the report are detailed descriptions of an advanced imaging system and docking and safing systems that ensure compatibility with the SSF. The report concludes by describing management procedures and project costs.

  18. The pre- and post-therapy measurement of communication skills of couples undergoing sex therapy at the Masters & Johnson Institute.

    Science.gov (United States)

    Tullman, G M; Gilner, F H; Kolodny, R C; Dornbush, R L; Tullman, G D

    1981-04-01

    A battery of five paper and pencil questionnaires designed to measure empirically 10 specific skills hypothesized to be involved in effective interpersonal communication was employed to assess the pre- and post-therapy levels of these skills in couples undergoing treatment for sexual dysfunction at the Masters & Johnson Institute in St. Louis, Missouri. The females exhibited significant increases across the 2-week period of therapy for the following skills: positive assertion in intimate heterosexual peer relationships, assertiveness, verbal expression of feelings, and nonmaterial support and evidence of love. For the males significant increases in the following skills were obtained: assertiveness, verbal expression of feelings, self-disclosure, and tolerance of the less pleasant aspects of the loved one. A significant decrease was observed for the skill entitled feelings not expressed verbally to the loved one. Thus, both the females and males became more assertive and more able to express their feelings openly and thus more able to share more of themselves with their partners as a result of the therapy. These results lend empirical support to Masters and Johnson's theoretical model of communication and to the view that much more than simple behavior therapy is involved in a successful sex therapy program.

  19. Meta-analyses and other methodological issues in meditation research: Reply to Orme-Johnson and Dillbeck (2014).

    Science.gov (United States)

    Sedlmeier, Peter; Eberth, Juliane; Schwarz, Marcus

    2014-03-01

    We are grateful to Orme-Johnson and Dillbeck (2014) for raising several potential methodological concerns they have with our meta-analysis of the psychological effects of meditation and for thereby providing us with the opportunity to clarify these points. Orme-Johnson and Dillbeck raised 4 points that they believed might have led to unfair treatment of studies that reported the effects of transcendental meditation (TM). First, they were concerned with the way we aggregated effects over different categories of variables. Second, they disagreed with our contention that there might have been some upward bias in the effects reported for TM studies. Third, they argued that the results from TM studies do not differ depending on whether studies were done by researchers affiliated with TM institutions, and 4th, they questioned the completeness of our selection of TM studies. We still believe that our methodology for reporting study results was justified on theoretical grounds and argue that the results for all variable categories are readily available in our analysis. We also still find some indication of upward bias for TM studies, even using the method they propose. We cannot say much regarding author affiliation because we did not raise that point, and, last, we have to concede that we indeed missed some TM studies. Yet this omission did not have any substantial practical consequences concerning our conclusions. We end with a short discussion about how meditation research should be conducted in the future.

  20. Stevens–Johnson syndrome and toxic epidermal necrolysis in an academic hospital setting: a 5-year retrospective study

    Directory of Open Access Journals (Sweden)

    Ewa Stocka-Łabno

    2016-10-01

    Full Text Available Introduction: Toxic epidermal necrolysis and Stevens–Johnson syndrome are acute life-threatening mucocutaneous reactions to drugs. The aims of the study were to identify these drugs and characterize population prone to these reactions. Materials and Methods: Data including demographics, culprit drug, clinical characteristics, course of disease, treatment given, and therapeutic responses were retrospectively collected from medical records of 31 patients admitted to Department of Dermatology from January 2009 to December 2014. Results: Drugs most commonly involved in Stevens–Johnson syndrome were antimicrobials: ciprofloxacin, doxycycline, cefuroxime, trimethoprim, amoxicillin, clindamycin, co-trimoxazole (50% of patients and nonsteroidal anti-inflammatory drugs: ibuprofen, naproxen, metamizole, piroxicam (29% of patients. Drugs involved in toxic epidermal necrolysis were antimicrobials: sulfasalazine, co-trimoxazole, cefuroxime, clindamycin (71% of patients and anticonvulsants: lamotrigine (29% of patients. The comorbidities’ characteristic for the group of patients affected by toxic epidermal necrolysis were psychiatric and autoimmune disorders. The most common complication was infection. Two patients died and in both cases the cause of death was sepsis. Conclusion: The study indicates that in observed population drugs with the highest risk of most severe reactions are lamotrigine (anticonvulsant and antimicrobials (most commonly sulfonamides, therefore it is advisable to consider carefully administration of these drugs, especially to patients with history of autoimmune reactions.

  1. Dynamic Mechanical Properties and Johnson-Cook Type Constitutive Equation of Wood Rubber Shock Absorber for Vehicle%车用木橡胶减震器动态力学性能及Johnson-Cook型本构方程

    Institute of Scientific and Technical Information of China (English)

    齐英杰; 孙奇; 马岩

    2015-01-01

    [Objective]The main purposes of this paper is to analyze the mechanical properties of wood rubber shock absorber for vehicle,to obtain the Johnson-Cook constitutive equation and to check out whether the equation can exactly describe the relationships of stress and strain for wood rubber shock absorber for vehicle. [Method]We select the small Xing’an mountain Korean pine (Pinus koraiensis) wood with the density of 0. 439 g cm -3 and moisture content of 12%, chloroprene rubber which has good elasticity,high bonding strength,flexible layer,resistant to impact and vibration is also used as experimental materials. Micrometer-level fiber forging machine is applied to process the dried red pine wood into wood fiber,then put these wood fiber into the kneading machine,and obtain the micro wood fiber with width of 1 -2 mm,length of 15 -30 mm. The specimens of wood rubber shock absorber for vehicle were prepared by several processes including the preparation,weighing,mixing,molding,holding pressure,unloading,and so on. Dynamic compression tests on the specimens of wood rubber shock absorber for vehicle are performed by using Split Hopkinson pressure bar,and get the curves at the strain rate of 1 250 s -1 ,1 500 s -1 and 1 750 s -1 ,respectively. Finally,using the experimental data and Origin software to ascertain the parameters of Johnson-Cook constitutive equation,then the Johnson-Cook constitutive equation,and the experimental curve and the curve fitted by the Johnson-Cook constitutive equation is established and compared,respectively.[Result]Theφ10 mm × 10 mm specimens of wood rubber shock absorber for vehicle were made, the stress and strain curves at the strain rate of 1 250 s -1 ,1 500 s -1 and 1 750 s -1 were obtained by dynamic compression tests,and the Johnson-Cook constitutive equation ( σ = [21 +0.329(ε)1.16]×[1 +0.148ln(·ε* )]) of wood rubber shock absorber for vehicle are successfully established. [Conclusion]By analyzing the stress and strain curves of

  2. Development of the Space Debris Sensor (SDS)

    Science.gov (United States)

    Hamilton, J.; Liou, J.-C.; Anz-Meador, P. D.; Corsaro, B.; Giovane, F.; Matney, M.; Christiansen, E.

    2017-01-01

    The Space Debris Sensor (SDS) is a NASA experiment scheduled to fly aboard the International Space Station (ISS) starting in 2018. The SDS is the first flight demonstration of the Debris Resistive/Acoustic Grid Orbital NASA-Navy Sensor (DRAGONS) developed and matured at NASA Johnson Space Center's Orbital Debris Program Office. The DRAGONS concept combines several technologies to characterize the size, speed, direction, and density of small impacting objects. With a minimum two-year operational lifetime, SDS is anticipated to collect statistically significant information on orbital debris ranging from 50 microns to 500 microns in size. This paper describes the features of SDS and how data from the ISS mission may be used to update debris environment models. Results of hypervelocity impact testing during the development of SDS and the potential for improvement on future sensors at higher altitudes will be reviewed.

  3. Z-2 Prototype Space Suit Development

    Science.gov (United States)

    Ross, Amy; Rhodes, Richard; Graziosi, David; Jones, Bobby; Lee, Ryan; Haque, Bazle Z.; Gillespie, John W., Jr.

    2014-01-01

    NASA's Z-2 prototype space suit is the highest fidelity pressure garment from both hardware and systems design perspectives since the Space Shuttle Extravehicular Mobility Unit (EMU) was developed in the late 1970's. Upon completion the Z-2 will be tested in the 11 foot human-rated vacuum chamber and the Neutral Buoyancy Laboratory (NBL) at the NASA Johnson Space Center to assess the design and to determine applicability of the configuration to micro-, low- (asteroid), and planetary- (surface) gravity missions. This paper discusses the 'firsts' that the Z-2 represents. For example, the Z-2 sizes to the smallest suit scye bearing plane distance for at least the last 25 years and is being designed with the most intensive use of human models with the suit model.

  4. Enhancing International Space Station (ISS) Mission Control Center (MCC) Operations Using Tcl/Tk

    Science.gov (United States)

    OHagan, Brian; Long, Stephen K., Sr.

    2004-01-01

    This paper will discuss the use of Tcl/Tk to enhance the abilities of flight controllers to control the International Space Station (ISS) from the Mission Control Center (MCC) at the Johnson Space Center. We will discuss why existing tools where not able to meet these needs as easily as Tcl/Tk. In addition, we will also discuss how we interfaced with the existing MCC infrastructure to receive ISS telemetry, find servers, register services, and send commands to ISS.

  5. A comparison of estimation methods for fitting Weibull, Johnson's SB and beta functions to Pinus pinaster, Pinus radiata and Pinus sylvestris stands in northwest Spain

    Energy Technology Data Exchange (ETDEWEB)

    Gorgoseo, J. J.; Rojo, A.; Camara-Obregon, A.; Dieguez-Aranda, U.

    2012-07-01

    The purpose of this study was to compare the accuracy of the Weibull, Johnson's SB and beta distributions, fitted with some of the most usual methods and with different fixed values for the location parameters, for describing diameter distributions in even-aged stands of Pinus pinaster, Pinus radiata and Pinus sylvestris in northwest Spain. A total of 155 permanent plots in Pinus sylvestris stands throughout Galicia, 183 plots in Pinus pinaster stands throughout Galicia and Asturias and 325 plots in Pinus radiata stands in both regions were measured to describe the diameter distributions. Parameters of the Weibull function were estimated by Moments and Maximum Likelihood approaches, those of Johnson's SB function by Conditional Maximum Likelihood and by Knoebel and Burkhart's method, and those of the beta function with the method based on the moments of the distribution. The beta and the Johnson's SB functions were slightly superior to Weibull function for Pinus pinaster stands; the Johnson's SB and beta functions were more accurate in the best fits for Pinus radiata stands, and the best results of the Weibull and the Johnson's SB functions were slightly superior to beta function for Pinus sylvestris stands. However, the three functions are suitable for this stands with an appropriate value of the location parameter and estimation of parameters method. (Author) 44 refs.

  6. Identifying the incidence of rash, Stevens-Johnson syndrome and toxic epidermal necrolysis in patients taking lamotrigine: a systematic review of 122 randomized controlled trials.

    Science.gov (United States)

    Bloom, Romi; Amber, Kyle T

    2017-01-01

    Lamotrigine is an antiepileptic drug used for the treatment of epilepsy, bipolar disorder and numerous off-label uses. The development of rash significantly affects its use. The most concerning of these adverse reactions is Stevens-Johnson syndrome/toxic epidermal necrolysis. We performed a systematic review of randomized controlled trials using lamotrigine as a monotherapy to quantify the incidence of cutaneous reactions, particularly Stevens-Johnson syndrome/toxic epidermal necrolysis. Of a total of 4,364 papers regarding lamotrigine, 122 studies met our inclusion and exclusion criteria. In total, 18,698 patients were included with 1,570 (8.3%) of patients experiencing an adverse dermatologic reaction. The incidence of Stevens-Johnson syndrome/toxic epidermal necrolysis was 0.04%.

  7. Identifying the incidence of rash, Stevens-Johnson syndrome and toxic epidermal necrolysis in patients taking lamotrigine: a systematic review of 122 randomized controlled trials*

    Science.gov (United States)

    Bloom, Romi; Amber, Kyle T.

    2017-01-01

    Lamotrigine is an antiepileptic drug used for the treatment of epilepsy, bipolar disorder and numerous off-label uses. The development of rash significantly affects its use. The most concerning of these adverse reactions is Stevens-Johnson syndrome/toxic epidermal necrolysis. We performed a systematic review of randomized controlled trials using lamotrigine as a monotherapy to quantify the incidence of cutaneous reactions, particularly Stevens-Johnson syndrome/toxic epidermal necrolysis. Of a total of 4,364 papers regarding lamotrigine, 122 studies met our inclusion and exclusion criteria. In total, 18,698 patients were included with 1,570 (8.3%) of patients experiencing an adverse dermatologic reaction. The incidence of Stevens-Johnson syndrome/toxic epidermal necrolysis was 0.04%. PMID:28225977

  8. NASA space life sciences research and education support program

    Science.gov (United States)

    Jones, Terri K.

    1995-01-01

    USRA's Division of Space Life Sciences (DSLS) was established in 1983 as the Division of Space Biomedicine to facilitate participation of the university community in biomedical research programs at the NASA Johnson Space Center (JSC). The DSLS is currently housed in the Center for Advanced Space Studies (CASS), sharing quarters with the Division of Educational Programs and the Lunar and Planetary Institute. The DSLS provides visiting scientists for the Johnson Space Center; organizes conferences, workshops, meetings, and seminars; and, through subcontracts with outside institutions, supports NASA-related research at more than 25 such entities. The DSLS has considerable experience providing visiting scientists, experts, and consultants to work in concert with NASA Life Sciences researchers to define research missions and goals and to perform a wide variety of research administration and program management tasks. The basic objectives of this contract have been to stimulate, encourage, and assist research and education in the NASA life sciences. Scientists and experts from a number of academic and research institutions in this country and abroad have been recruited to support NASA's need to find a solution to human physiological problems associated with living and working in space and on extraterrestrial bodies in the solar system.

  9. Dubin-Johnson综合征临床特点分析%Clinical Features of Dubin-Johnson Syndrome

    Institute of Scientific and Technical Information of China (English)

    甘雨; 张鸿飞; 朱世殊; 霍翠华

    2011-01-01

    目的 探讨Dubin-Johnson综合征的临床特点.方法 回顾性分析30例Dubin-Johnson综合征患者的临床表现、实验室检查及诊治方法.结果 主要表现为无症状的长期轻-中度皮肤、巩膜黄染和小便发黄,慢性持续性或间歇性黄疸;总胆红素水平升高,平均(87.9±51.5) mol/L;尿胆红素均阳性;肝穿刺活检组织病理检查显示:中央区周围肝细胞胞质内易见较粗大的棕色色素颗粒沉积,一般无需特殊治疗,预后良好.结论 对临床上反复发生以结合性胆红素增高为主的黄疸,同时血清转氨酶正常,并已排除肝内、外梗阻及其他各类肝病者,应及时行肝穿刺活检组织病理检查,以便确诊是否患有Dubin-Johnson综合征.%Objective To analyze the clinical features of Dubin - Johnson syndrome.Methods The clinical manifestations , laboratory tests, diagnosis and treatment were analyzed retrospectively in 30 Dubin - Johnson syndrome patients.Results The main manifestations were: long - term asymptomatic mild - moderate yellow skin, sclera and urine, and chronic persistent or intermittent jaundice; total bilirubin levels increased, averaging ( 87.9 ±51.5 ) mol/L; urinary bilirubins were positive ; liver biopsy pathology tests showed that gross brown pigment granules were seen in cytoplasm of liver cells around central area, usually not needing treatment with good prognosis.Conclusion Timely liver biopsy should be performed to confirm whether having Dubin - Johnson syndrome in patients with jaundice repeatedly occurring mostly with conjugated hyperbilirubinemia and normal serum transaminase but without obstruction in or outside liver or other liver diseases.

  10. Return from space: from the International Space Station to CERN

    CERN Multimedia

    2012-01-01

    On 16 May 2011, the space shuttle Endeavour took off for the last time from Cape Canaveral in Florida with six astronauts on board. Their mission (code-named STS-134) was to install the Alpha Magnetic Spectrometer (AMS), the dark matter and antimatter detector designed at CERN, on the International Space Station. Since then, AMS has been sending data to CERN from space.   On Wednesday 25 July do not miss a rare opportunity to meet the mission’s six astronauts at CERN: Mark E. Kelly, commander (NASA) Greg H. Johnson, pilot (NASA) and the mission’s specialists: Michael Fincke (NASA) Roberto Vittori (ESA and ASI) Andrew J. Feustel (NASA) Greg Chamitoff (NASA) 4:20 pm: the event will kick off with a photo and autograph session at the Globe of Science and Innovation. 5 pm: lecture given by the astronauts for CERN personnel and summer students in the Main Auditorium. (Seats reserved for the summer students - contact: summer.student.info@cern.ch). ...

  11. The Behavior of Systems in the Space Environment

    Science.gov (United States)

    1991-07-19

    representing Canada, Finland, France, Germany, Greece, India, Ireland, the Netherlands, the Republic of China , Turkey, the United Kingdom, and the xi United...most of the problema , the choice of the E.F.I.E. formulation is more powerful because of its generality. It is more difficult to solve than M.F.I.E...Neish Taipei, Taiwan 10636 R.O.C. Space Sciences Unit Univ. of Kent at CanterburyCalvin R. Johnson Canterbury, Kent CT2 7NR Space Power Institute

  12. Development of a Space Station Operations Management System

    Science.gov (United States)

    Brandli, A. E.; Mccandless, W. T.

    1988-01-01

    To enhance the productivity of operations aboard the Space Station, a means must be provided to augment, and frequently to supplant, human effort in support of mission operations and management, both on the ground and onboard. The Operations Management System (OMS), under development at the Johnson Space Center, is one such means. OMS comprises the tools and procedures to facilitate automation of station monitoring, control, and mission planning tasks. OMS mechanizes, and hence rationalizes, execution of tasks traditionally performed by mission planners, the mission control center team, onboard System Management software, and the flight crew.

  13. Space Station

    Science.gov (United States)

    Anderton, D. A.

    1985-01-01

    The official start of a bold new space program, essential to maintain the United States' leadership in space was signaled by a Presidential directive to move aggressively again into space by proceeding with the development of a space station. Development concepts for a permanently manned space station are discussed. Reasons for establishing an inhabited space station are given. Cost estimates and timetables are also cited.

  14. Management of ocular conditions in the burn unit: thermal and chemical burns and Stevens-Johnson syndrome/toxic epidermal necrolysis.

    Science.gov (United States)

    Lin, Amy; Patel, Neha; Yoo, David; DeMartelaere, Sheri; Bouchard, Charles

    2011-01-01

    Patients in burn intensive care units suffer from potentially life-threatening conditions including thermal or chemical burns and Stevens-Johnson syndrome/toxic epidermal necrolysis. There is often involvement of the ocular surface or adnexal structures which may be present at the time of hospital admission or may develop later in the hospital course. This article will describe the types of ocular burns, the mechanisms and manifestations of Stevens-Johnson syndrome/toxic epidermal necrolysis, the circumstances that may influence outcome, and acute and long-term treatment strategies, including new and evolving options.

  15. Diagrama de Barber y Johnson para el análisis de la gestión de la cama hospitalaria en Costa Rica

    OpenAIRE

    Melvin Morera Salas

    2013-01-01

    Objetivo: Mostrar la utilidad del diagrama de Barber y Johnson para analizar comparativamente la productividad y gestión del recurso cama de los hospitales públicos de Costa Rica. Materiales y Métodos: La información de camas, egresos y estancias por centro hospitalario para el 2011 proviene de la Caja Costarricense de Seguro Social. Se utiliza el diagrama de Barber y Johnson para comparar los indicadores de estancia media, ocupación, intervalo de sustitución y egresos por cama durante un año...

  16. Supplemental site inspection for Air Force Plant 59, Johnson City, New York, Volume 3: Appendices F-Q

    Energy Technology Data Exchange (ETDEWEB)

    Nashold, B.; Rosenblatt, D.; Hau, J. [and others

    1995-08-01

    This summary describes a Supplemental Site Inspection (SSI) conducted by Argonne National Laboratory (ANL) at Air Force Plant 59 (AFP 59) in Johnson City, New York. All required data pertaining to this project were entered by ANL into the Air Force-wide Installation Restoration Program Information System (IRPIMS) computer format and submitted to an appropriate authority. The work was sponsored by the United States Air Force as part of its Installation Restoration Program (IRP). Previous studies had revealed the presence of contaminants at the site and identified several potential contaminant sources. Argonne`s study was conducted to answer questions raised by earlier investigations. This volume consists of appendices F-Q, which contain the analytical data from the site characterization.

  17. Application of the Johnson-Kendall-Roberts model in AFM-based mechanical measurements on cells and gel.

    Science.gov (United States)

    Efremov, Yu M; Bagrov, D V; Kirpichnikov, M P; Shaitan, K V

    2015-10-01

    The force-distance curves (FCs) obtained by the atomic force microscope (AFM) with colloid probes contain information about both the viscoelastic properties and adhesion of a sample. Here, we processed both the approach and retraction parts of FCs obtained on polyacrylamide gels (in water or PBS) and Vero cells (in a culture medium). The Johnson-Kendall-Roberts model was applied to the retraction curves to account for the adhesion. The effects of loading rate, holding time and indentation depth on adhesion force and Young's modulus, calculated from approach and retraction curves, were studied. It was shown that both bulk and local interfacial viscoelasticity can affect the observed approach-retraction hysteresis and measured parameters. The addition of 1% bovine serum albumin (BSA) decreased adhesion of the probe to the PAA gel surface, so interfacial viscoelasticity effects were diminished. On the contrary, the adhesiveness of Vero cells increased after BSA addition, indicating the complex nature of the cell-probe interaction.

  18. Association of HLA-BFNx011502 allele and carbamazepine-induced Stevens-Johnson syndrome among Indians

    Directory of Open Access Journals (Sweden)

    Mehta Timir

    2009-01-01

    Full Text Available Background: Stevens-Johnson Syndrome (SJS and toxic epidermal necrolysis are severe cutaneous reactions caused by certain drugs, including antiepileptic carbamazepine. A strong association has been reported between human leucocyte antigen (HLA-BFNx011502 and carbamazepine-induced SJS in Han Chinese patients. European studies suggested that HLA-BFNx011502 is not a universal marker but is ethnicity-specific for Asians. Aim: To study the association between HLA-BFNx011502 and carbamazepine-induced SJS in Indian patients. Methods: Eight individuals who fulfilled the diagnostic criteria of SJS induced by carbamazepine were identified and HLA-B molecular typing was performed. HLA-B genotyping was carried out by polymerase chain reaction using sequence-specific primers. Results: Out of eight patients studied for genotype, six patients were found to have the HLA-BFNx011502 allele. Conclusion: This study suggests an association between HLA-BFNx011502 and carbamazepine-induced SJS in Indian patients.

  19. Stevens Johnson syndrome, toxic epidermal necrolysis and SJS-TEN overlap: A retrospective study of causative drugs and clinical outcome

    Directory of Open Access Journals (Sweden)

    Sharma Vinod

    2008-01-01

    Full Text Available Background and Aims: Stevens Johnson syndrome (SJS, toxic epidermal necrolysis (TEN and SJS-TEN overlap are serious adverse cutaneous drug reactions. Drugs are often implicated in these reactions. Methods: A retrospective analysis of inpatients′ data with these dermatological diagnoses were carried out for three years, to study the causative drugs, clinical outcome, and mortality in these conditions. Results: Thirty patients (15 TEN, nine SJS-TEN overlap, and six SJS were admitted. In 21 cases, multiple drugs were implicated whereas single drugs were responsible in nine. Anticonvulsants (35.08% were the most commonly implicated drugs followed by antibiotics (33.33% and NSAIDS (24.56%. Twenty-five patients recovered whereas five died (four TEN, one SJS-TEN overlap. Conclusion: Anticonvulsants, antibiotics and NSAIDs were the most frequently implicated drugs. TEN causes higher mortality than both SJS and SJS-TEN overlap.

  20. Role of nanocrystalline silver dressings in the management of toxic epidermal necrolysis (TEN) and TEN/Stevens-Johnson syndrome overlap.

    Science.gov (United States)

    Smith, Saxon D; Dodds, Annabel; Dixit, Shreya; Cooper, Alan

    2015-11-01

    Toxic epidermal necrolysis (TEN) and Stevens-Johnson syndrome (SJS) are severe mucocutaneous eruptions. There is currently no defined optimal approach to wound care. The objective of this study was to evaluate silver dressings in the wound-care management of TEN and SJS/TEN syndrome overlap with a retrospective case review of nine patients with TEN and SJS/TEN overlap presenting to our institution. Nanocrystalline silver dressings appear to be useful in the rapid commencement of healing in these patients. TEN and SJS/TEN overlap are rare conditions. This contributed to a relatively small number of cases included in the study. The ease of application, antimicrobial properties and low frequency of change make nanocrystalline silver dressings ideal in TEN/SJS.

  1. Supplemental site inspection for Air Force Plant 59, Johnson City, New York, Volume 2: Appendices A-E

    Energy Technology Data Exchange (ETDEWEB)

    Nashold, B.; Rosenblatt, D.; Tomasko, D. [and others

    1995-08-01

    This summary describes a Supplemental Site Inspection (SSI) conducted by Argonne National Laboratory (ANL) at Air Force Plant 59 (AFP 59) in Johnson City, New York. All required data pertaining to this project were entered by ANL into the Air Force-wide Installation Restoration Program Information System (IRPIMS) computer format and submitted to an appropriate authority. The work was sponsored by the United States Air Force as part of its Installation Restoration Program (IRP). Previous studies had revealed the presence of contaminants at the site and identified several potential contaminant sources. Argonne`s study was conducted to answer questions raised by earlier investigations. This volume consists of appendices A-E, containing field data and data validation.

  2. ADAPTATION OF JOHNSON SEQUENCING ALGORITHM FOR JOB SCHEDULING TO MINIMISE THE AVERAGE WAITING TIME IN CLOUD COMPUTING ENVIRONMENT

    Directory of Open Access Journals (Sweden)

    SOUVIK PAL

    2016-09-01

    Full Text Available Cloud computing is an emerging paradigm of Internet-centric business computing where Cloud Service Providers (CSPs are providing services to the customer according to their needs. The key perception behind cloud computing is on-demand sharing of resources available in the resource pool provided by CSP, which implies new emerging business model. The resources are provisioned when jobs arrive. The job scheduling and minimization of waiting time are the challenging issue in cloud computing. When a large number of jobs are requested, they have to wait for getting allocated to the servers which in turn may increase the queue length and also waiting time. This paper includes system design for implementation which is concerned with Johnson Scheduling Algorithm that provides the optimal sequence. With that sequence, service times can be obtained. The waiting time and queue length can be reduced using queuing model with multi-server and finite capacity which improves the job scheduling model.

  3. A Modified Johnson-Cook Model for Advanced High-Strength Steels Over a Wide Range of Temperatures

    Science.gov (United States)

    Qingdong, Zhang; Qiang, Cao; Xiaofeng, Zhang

    2014-12-01

    Advanced high-strength steel (AHSS) is widely used in automotive industry. In order to investigate the mechanical behaviors of AHSS over a wide range of temperatures, quasi-static tensile experiments were conducted at the temperatures from 298 to 1073 K on a Gleeble-3500 thermo-simulation machine. The results show that flow behaviors are affected by testing temperature significantly. In order to describe the flow features of AHSS, the Johnson-Cook (JC) model is employed. By introducing polynomial functions to consider the effects of temperature on hardening behavior, the JC model is modified and used to predict flow behavior of AHSS at different experimental conditions. The accuracy of the modified JC model is verified and the predicted flow stress is in good agreement with experimental results, which confirms that the modified JC model can give an accurate and precise estimate over a wide range of temperatures.

  4. Characterization and analysis of Devonian shales as related to release of gaseous hydrocarbons. Well K-4 Johnson County, Kentucky

    Energy Technology Data Exchange (ETDEWEB)

    Kalyoncu, R.S.; Snyder, M.J.

    1979-08-15

    Various characterization tasks were performed on 54 cored shale samples from Johnson County, Kentucky. Core samples were obtained from depths of 967 to 1510 feet. A total of 126 samples were canned for several DOE contractors, including Battelle Columbus. Free gas analyses indicate the presence of significant quantities of higher chain hydrocarbon gases in the K-4 shales. Hydrocarbon gas release rates and kinetic studies indicate that diffusion coefficients are inversely proportional to the square root of the molecular weight of diffusing species. Although wide scatter is observed in the chemical and physical characterization data, good correlations exist between the hydrocarbon gas contents and various laboratory characterization values (physical and chemical). A number of one-to-one relationships are pointed out and discussed. Lithologically, inorganic portions of K-4 shales are composed predominantly of quartz and illite with small quantities of pyrite and various carbonate minerals.

  5. Simulation of the thermal behaviour of a concrete dam using in situ measurements : case of Daniel-Johnson dam

    Energy Technology Data Exchange (ETDEWEB)

    Thibeault, N. [Tecsult Inc., Montreal, PQ (Canada); Lariviere, R. [Hydro-Quebec, Montreal, PQ (Canada)

    2004-09-01

    The Daniel-Johnson Dam is the largest multiple-arch dam in the world. It was completed in 1969 at a height of 214 metres. The dam has faced many challenges related to severe thermal conditions, presence of plunging cracks in many arches and opening at the rock-concrete interface. Major concerns lie with the shear resistance in the plane of the plunging cracks. It has been determined that the main cause of arch degradation is related to the thermal behaviour of the dam. A thermal shelter was therefore constructed in the lower part of the arches. This protection has proved to be very effective. A decision was later taken to grout the plunging cracks of some arches. This involved the verification of the structural stability of the arch base. To accomplish this, the shear safety factor during the proposed injection had to be validated. This paper discussed the complex challenge of simulating the thermal behaviour of a concrete dam. It presented an alternative to the conventional methods to implement a thermal profile in a finite element model. Synthetic curves of the thermal profile were used for different thicknesses and boundary conditions. The curves were then interpolated for intermediate thicknesses. A numerical model developed for this project has been verified according to the recommendations of Bulletin 94 of ICOLD (Computer Software for Dams). The loads to consider within the framework study of the Daniel-Johnson Dam gravity; thermal gradient in summer and winter; thermal protection; hydrostatic pressure; uplift pressure in cracks; hydrostatic pressure at upstream on the grout curtain; rock-concrete contact opening; and grout pressures. The proposed method has proven to be simple, efficient and easily implemented to rapidly determine the thermal behaviour of the structures. It is also particularly well suited for multiple-arch dams. The thermal structure analysis was used to determine deformation which was compared with measurements of the pendulums. 8 refs

  6. Valuing water quality in urban watersheds: A comparative analysis of Johnson Creek, Oregon, and Burnt Bridge Creek, Washington

    Science.gov (United States)

    Netusil, Noelwah R.; Kincaid, Michael; Chang, Heejun

    2014-05-01

    This study uses the hedonic price method to investigate the effect of five water quality parameters on the sale price of single-family residential properties in two urbanized watersheds in the Portland, Oregon-Vancouver, Washington metropolitan area. Water quality parameters include E. coli or fecal coliform, which can affect human health, decrease water clarity and generate foul odors; pH, dissolved oxygen, and stream temperature, which can impact fish and wildlife populations; and total suspended solids, which can affect water clarity, aquatic life, and aesthetics. Properties within ¼ mile, ½, mile, one mile, or more than one mile from Johnson Creek are estimated to experience an increase in sale price of 13.71%, 7.05%, 8.18%, and 3.12%, respectively, from a one mg/L increase in dissolved oxygen levels during the dry season (May-October). Estimates for a 100 count per 100 mL increase in E. coli during the dry season are -2.81% for properties within ¼ mile of Johnson Creek, -0.86% (½ mile), -1.19% (one mile), and -0.71% (greater than one mile). Results for properties in Burnt Bridge Creek include a significantly positive effect for a one mg/L increase in dissolved oxygen levels during the dry season for properties within ½ mile (4.49%), one mile (2.95%), or greater than one mile from the creek (3.17%). Results for other water quality parameters in Burnt Bridge Creek are generally consistent with a priori expectations. Restoration efforts underway in both study areas might be cost justified based on their estimated effect on property sale prices.

  7. Integrating Space Flight Resource Management Skills into Technical Lessons for International Space Station Flight Controller Training

    Science.gov (United States)

    Baldwin, Evelyn

    2008-01-01

    The Johnson Space Center s (JSC) International Space Station (ISS) Space Flight Resource Management (SFRM) training program is designed to teach the team skills required to be an effective flight controller. It was adapted from the SFRM training given to Shuttle flight controllers to fit the needs of a "24 hours a day/365 days a year" flight controller. More recently, the length reduction of technical training flows for ISS flight controllers impacted the number of opportunities for fully integrated team scenario based training, where most SFRM training occurred. Thus, the ISS SFRM training program is evolving yet again, using a new approach of teaching and evaluating SFRM alongside of technical materials. Because there are very few models in other industries that have successfully tied team and technical skills together, challenges are arising. Despite this, the Mission Operations Directorate of NASA s JSC is committed to implementing this integrated training approach because of the anticipated benefits.

  8. Test Review: Schrank, F. A., McGrew, K. S., & Mather, N. (2014). Woodcock-Johnson IV Tests of Cognitive Abilities

    Science.gov (United States)

    Reynolds, Matthew R.; Niileksela, Christopher R.

    2015-01-01

    "The Woodcock-Johnson IV Tests of Cognitive Abilities" (WJ IV COG) is an individually administered measure of psychometric intellectual abilities designed for ages 2 to 90+. The measure was published by Houghton Mifflin Harcourt-Riverside in 2014. Frederick Shrank, Kevin McGrew, and Nancy Mather are the authors. Richard Woodcock, the…

  9. Environmental Technology Verification Test Report of Mobile Source Selective Catalytic Reduction, Johnson Matthey SCCRT, Version 1, Selective Catalytic Reduction Technology with a Catalyzed Continuously Regenerating Trap

    Science.gov (United States)

    The Johnson Matthey SCCRT, v.1 technology is a urea-based SCR system combined with a CCRT filter designed for on-highway light, medium, and heavy heavy-duty diesel, urban and non-urban, bus exhaust gas recirculation (EGR)-or non-EGR-equipped engines for use with commercial ultra-...

  10. English Language Proficiency and Test Performance: An Evaluation of Bilingual Students with the Woodcock-Johnson III Tests of Cognitive Abilities

    Science.gov (United States)

    Sotelo-Dynega, Marlene; Ortiz, Samuel O.; Flanagan, Dawn P.; Chaplin, William F.

    2013-01-01

    In this article, we report the findings of an exploratory empirical study that investigated the relationship between English Language Proficiency (ELP) on performance on the Woodcock-Johnson Tests of Cognitive Abilities-Third Edition (WJ III) when administered in English to bilingual students of varying levels of ELP. Sixty-one second-grade…

  11. "Teachers Are Not Empty Vessels": A Reception Study of Freeman and Johnson's (1998) Reconceptualization of the Knowledge Base of Second Language Teacher Education

    Science.gov (United States)

    Lee, Joseph J.; Murphy, John; Baker, Amanda

    2015-01-01

    This study traces the reception history of Freeman and Johnson's (1998) widely cited article dedicated to theory and practices of second language teacher education (SLTE). It illuminates the degree to which that article has impacted SLTE theory, research, and potentially instructional practices. The reception study analysis is based on a data set…

  12. The new art of making books: with new technologies at our disposal, the book is anything but dead, declare Charlotte Johnson & William Harroff. It is better than ever

    National Research Council Canada - National Science Library

    Johnson, Charlotte; Harroff, William

    2006-01-01

    ... all books are read in the same way. In the new art every book requires a different reading." Steven Johnson, author of Everything Bad Is Good for You: How Today's Popular Culture Is Actually Making Us Smarter (Riverhead, 2005), seems to agree. "By almost all the standards we use to measure reading's cognitive benefits--attention, memory, the...

  13. Completion of Level 4 Milestone M4AT-15OR2301039 for the Johnson Noise Thermometry for Drift-free Temperature Measurements Work Package AT-15OR230103

    Energy Technology Data Exchange (ETDEWEB)

    Britton Jr, Charles L. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2015-09-14

    This memorandum constitutes our September 2015 level 4 milestone for the project entitled “Johnson Noise Thermometry for Drift-free Temperature Measurements” and satisfies the Milestone/Activity (Conclude HFIR field demonstration of JNT prototype). The progress summary describes the work performed to complete the subject milestone.

  14. A Proposed Theoretical Model Using the Work of Thomas Kuhn, David Ausubel, and Mauritz Johnson as a Basis for Curriculum and Instruction Decisions in Science Education.

    Science.gov (United States)

    Bowen, Barbara Lynn

    This study presents a holistic framework which can be used as a basis for decision-making at various points in the curriculum-instruction development process as described by Johnson in a work published in 1967. The proposed framework has conceptual bases in the work of Thomas S. Kuhn and David P. Ausubel and utilizes the work of several perceptual…

  15. A Proposed Theoretical Model Using the Work of Thomas Kuhn, David Ausubel, and Mauritz Johnson as a Basis for Curriculum and Instruction Decisions in Science Education.

    Science.gov (United States)

    Bowen, Barbara Lynn

    This study presents a holistic framework which can be used as a basis for decision-making at various points in the curriculum-instruction development process as described by Johnson in a work published in 1967. The proposed framework has conceptual bases in the work of Thomas S. Kuhn and David P. Ausubel and utilizes the work of several perceptual…

  16. Model documentation for relations between continuous real-time and discrete water-quality constituents in Indian Creek, Johnson County, Kansas, June 2004 through May 2013

    Science.gov (United States)

    Stone, Mandy L.; Graham, Jennifer L.

    2014-01-01

    Johnson County is the fastest growing county in Kansas, with a population of about 560,000 people in 2012. Urban growth and development can have substantial effects on water quality, and streams in Johnson County are affected by nonpoint-source pollutants from stormwater runoff and point-source discharges such as municipal wastewater effluent. Understanding of current (2014) water-quality conditions and the effects of urbanization is critical for the protection and remediation of aquatic resources in Johnson County, Kansas and downstream reaches located elsewhere. The Indian Creek Basin is 194 square kilometers and includes parts of Johnson County, Kansas and Jackson County, Missouri. Approximately 86 percent of the Indian Creek Basin is located in Johnson County, Kansas. The U.S. Geological Survey, in cooperation with Johnson County Wastewater, operated a series of six continuous real-time water-quality monitoring stations in the Indian Creek Basin during June 2011 through May 2013; one of these sites has been operating since February 2004. Five monitoring sites were located on Indian Creek and one site was located on Tomahawk Creek. The purpose of this report is to document regression models that establish relations between continuously measured water-quality properties and discretely collected water-quality constituents. Continuously measured water-quality properties include streamflow, specific conductance, pH, water temperature, dissolved oxygen, turbidity, and nitrate. Discrete water-quality samples were collected during June 2011 through May 2013 at five new sites and June 2004 through May 2013 at a long-term site and analyzed for sediment, nutrients, bacteria, and other water-quality constituents. Regression models were developed to establish relations between discretely sampled constituent concentrations and continuously measured physical properties to estimate concentrations of those constituents of interest that are not easily measured in real time

  17. Anatomia foliar de Corymbia calophylla (Lindl. K.D.Hill & L.A.S. Johnson, Myrtaceae Leaf anatomy of Corymbia calophylla (Lindl. K.D. Hill e L.A.S. Johnson (Myrtaceae

    Directory of Open Access Journals (Sweden)

    Patrícia Mathias Döll-Boscardin

    2010-07-01

    Full Text Available Corymbia pertence à família Myrtaceae e envolve mais de 100 espécies arbóreas. Particularmente, a espécie Corymbia calophylla (Lindl. K.D.Hill & L.A.S. Johnson é um dos taxa transferidos de Eucalyptus para Corymbia, com utilização para a fabricação de mobiliário requintado e para o tratamento de disfunções digestivas, segundo a medicina tradicional australiana. O presente trabalho teve por objetivo avaliar as características anatômicas da folha de C. calophylla, a partir de espécimes coletados na Embrapa Florestas (Colombo-PR, Brasil. As análises anatômicas foram conduzidas a partir dos métodos usuais de microscopia fotônica e microscopia eletrônica. A anatomia foliar revelou a presença de estômatos anomocíticos na face abaxial da folha, mesofilo dorsiventral e nervura mediana com cavidades secretoras inseridas no sistema vascular. Em secção transversal, o pecíolo apresentou formato plano-convexo. Na estrutura anatômica do limbo foliar, da nervura mediana e do pecíolo foram observadas cavidades secretoras contendo material de natureza lipofílica, além de idioblastos de conteúdo fenólico. Alguns idioblastos contendo drusas de oxalato de cálcio foram também observados no parênquima da nervura mediana de C. calophylla.Corymbia, a genus of Myrtaceae, shows more than 100 tree species. In particular, Corymbia calophylla (Lindl. K.D.Hill & L.A.S. Johnson is one of the taxa changed from Eucalyptus to Corymbia. C. calophylla has been used for fine furniture and for treating digestive upsets according to the Australian traditional medicine. The goal of this paper was to study the anatomical data of leaves from C. calophylla. The botanical material was collected from Embrapa Forest (Colombo-PR, Brazil. The anatomical analyses were performed by the usual light and scanning microtechniques. Anomocytic stomata were observed on the abaxial surface. The foliar blade showed dorsiventral mesophyll. Midrib having secretory

  18. Sobolev spaces

    CERN Document Server

    Adams, Robert A

    2003-01-01

    Sobolev Spaces presents an introduction to the theory of Sobolev Spaces and other related spaces of function, also to the imbedding characteristics of these spaces. This theory is widely used in pure and Applied Mathematics and in the Physical Sciences.This second edition of Adam''s ''classic'' reference text contains many additions and much modernizing and refining of material. The basic premise of the book remains unchanged: Sobolev Spaces is intended to provide a solid foundation in these spaces for graduate students and researchers alike.* Self-contained and accessible for readers in other disciplines.* Written at elementary level making it accessible to graduate students.

  19. Multipurpose Spaces

    Science.gov (United States)

    Gordon, Douglas

    2010-01-01

    The concept of multipurpose spaces in schools is certainly not new. Especially in elementary schools, the combination of cafeteria and auditorium (and sometimes indoor physical activity space as well) is a well-established approach to maximizing the use of school space and a school district's budget. Nonetheless, there continue to be refinements…

  20. Atmospheric environment for Space Shuttle (STS-5) launch

    Science.gov (United States)

    Johnson, D. L.; Hill, C. K.; Batts, G. W.

    1983-01-01

    This report presents a summary of selected atmospheric conditions observed near Space Shuttle STS-5 launch time on November 11, 1982, at Kennedy Space Center, Florida. Values of ambient pressure, temperature, moisture, ground winds, visual observations (cloud), and winds aloft are included. The sequence of prelaunch Jimsphere measured vertical wind profiles is given in this report. Also presented are the wind and thermodynamic parameters measured at the surface and aloft in he SRB descent/impact ocean area. Final meteorological tapes, which consist of wind and thermodynamic parameters versus altitude, for STS-5 vehicle ascent and SRB descent have been constructed. The STS-5 ascent meteorological data tape has been constructed by Marshall Space Flight Center in response to Shuttle task agreement No. 936-53-22-368 with Johnson Space Center.

  1. Atmospheric environment for Space Shuttle (STS-7) launch

    Science.gov (United States)

    Johnson, D. L.; Hill, C. K.; Batts, G. W.

    1983-01-01

    Selected atmospheric conditions observed near Space Shuttle STS-7 launch time on June 18, 1983, at Kennedy Space Center, Florida are summarized. Values of ambient pressure, temperature, moisture, ground winds, visual observations (cloud), and winds aloft are included. The sequence of prelaunch Jimsphere measured vertical wind profiles is given in this report. Also presented are wind and thermodynamic parameters representative of surface and aloft conditions in the SRB descent/impact ocean area. Final meteorological tapes, which consist of wind and thermodynamic parameters versus altitude, for STS-7 vehicle ascent and Acoustic/SRB descent have been constructed. The STS-7 ascent meteorological data tape has been constructed by Marshall Space Flight Center in response to Shuttle task agreement No. 936-53-22-368 with Johnson Space Center.

  2. Atmospheric environment for Space Shuttle (STS-6) launch

    Science.gov (United States)

    Johnson, D. L.; Hill, C. K.; Batts, G. W.

    1983-01-01

    Selected atmospheric conditions observed near Space Shuttle STS-6 launch time on April 4, 1983, at Kennedy Space Center, Florida are summarized. Values of ambient pressure, temperature, moisture, ground winds, visual observations (cloud), and winds aloft are included. The sequence of prelaunch Jimsphere measured vertical wind profiles is given. Also presented are the wind and thermodynamic parameters measured at the surface and aloft in the SRB descent/impact ocean area. Final meteorological tapes, which consist of wind and thermodynamic parameters versus altitude, for STS-6 veicle ascent and SRB descent were constructed. The STS-6 ascent meteorological data tape was constructed by Marshall Space Flight Center in response to Shuttle task agreement No. 936-53-22-368 with Johnson Space Center.

  3. Structural and optoelectronic properties of the zinc titanate perovskite and spinel by modified Becke–Johnson potential

    Energy Technology Data Exchange (ETDEWEB)

    Ali, Zahid, E-mail: zahidf82@gmail.com [Materials Modeling Center, Department of Physics, University of Malakand, Chakdara (Pakistan); Ali, Sajad [Materials Modeling Center, Department of Physics, University of Malakand, Chakdara (Pakistan); Department of Physics, Abdul Wali Khan University, Mardan (Pakistan); Ahmad, Iftikhar; Khan, Imad [Materials Modeling Center, Department of Physics, University of Malakand, Chakdara (Pakistan); Rahnamaye Aliabad, H.A. [Department of Physics, Hakim Savzevari University, Sabzevar (Iran, Islamic Republic of)

    2013-07-01

    Structural and electronic properties of the cubic perovskite ZnTiO{sub 3} and spinel Zn{sub 2}TiO{sub 4} are theoretically studied by the modified Becke–Johnson (mBJ) potential within the framework of density functional theory (DFT). The calculated lattice constants are found to be consistent with the experimental results. The electronic band structures of both the materials reveal that ZnTiO{sub 3} is an indirect band gap while Zn{sub 2}TiO{sub 4} is a direct band gap semiconductor. The calculated fundamental band gaps of these compounds are 2.7 eV and 3.18 eV, which are consistent with the experimental band gaps of 2.9 eV and 3.1 eV, respectively. Zn{sub 2}TiO{sub 4} is a wide and direct band gap compound and hence is an attractive material for optoelectronic applications, especially in near ultraviolet (UV) optoelectronics. Keeping in view the importance of Zn{sub 2}TiO{sub 4} in low frequency UV devices its optical properties like dielectric functions, refractive index, reflectivity and energy loss function are also evaluated and discussed in detail.

  4. The contributions of Donald Lee Johnson to understanding the Quaternary geologic and biogeographic history of the California Channel Islands

    Science.gov (United States)

    Muhs, Daniel R.

    2013-01-01

    Over a span of 50 years, native Californian Donald Lee Johnson made a number of memorable contributions to our understanding of the California Channel Islands. Among these are (1) recognizing that carbonate dunes, often cemented into eolianite and derived from offshore shelf sediments during lowered sea level, are markers of glacial periods on the Channel Islands; (2) identifying beach rock on the Channel Islands as the northernmost occurrence of this feature on the Pacific Coast of North America; (3) recognizing of the role of human activities in historic landscape modification; (4) identifying both the biogenic and pedogenic origins of caliche “ghost forests” and laminar calcrete forms on the Channel Islands; (5) providing the first soil maps of several of the islands, showing diverse pathways of pedogenesis; (6) pointing out the importance of fire in Quaternary landscape history on the Channel Islands, based on detailed stratigraphic studies; and (7), perhaps his greatest contribution, clarifying the origin of Pleistocene pygmy mammoths on the Channel Islands, due not to imagined ancient land bridges, but rather the superb swimming abilities of proboscideans combined with lowered sea level, favorable paleowinds, and an attractive paleovegetation on the Channel Islands. Don was a classic natural historian in the great tradition of Charles Darwin and George Gaylord Simpson, his role models. Don’s work will remain important and useful for many years and is an inspiration to those researching the California Channel Islands today.

  5. Electronic structure engineering of ZnO with the modified Becke-Johnson exchange versus the classical correlation potential approaches

    KAUST Repository

    Ul Haq, Bakhtiar

    2013-12-01

    In this study, we report investigations of structural and electronic properties of ZnO in wurtzite (WZ), rock salt (RS) and zinc-blende (ZB) phases. Calculations have been done with full-potential linearized augmented plane wave plus local orbital method developed within the frame work of Density Functional Theory (DFT). For structural properties investigations, Perdew and Wang proposed local density approximations (LDA) and Perdew et al. proposed generalized gradient approximations (GGA) have been applied. Where for electronic properties in addition to these, Tran-Blaha modified Becke-Johnson (mBJ) potential has been used. Our computed band gap values of ZnO in WZ and ZB phases with mBJ potential are significantly improved compared to those with LDA and GGA; however, in RS phase, energy gap is significantly overestimated compared to experimental measurements. The Zn-d band was found to be more narrower with mBJ potential than that of LDA and GGA. On the other hand, our evaluated crystal field splitting energy values overestimate the experimental values. © 2013 Taylor and Francis.

  6. Applicability of Johnson-Mehl-Avrami model to crystallization kinetics of Zr60Al15Ni25 bulk amorphous alloy

    Institute of Scientific and Technical Information of China (English)

    YAN Zhi-jie; DANG Shu-e; WANG Xiang-hui; LIAN Pei-xia

    2008-01-01

    The applicability of Johnson-Mehl-Avrami(JMA) model to the crystallization kinetics of Zr60Al15Ni25 bulk amorphous alloy is investigated by differential scanning calorimetry(DSC) under isochronal and isothermal conditions. A criterion xm, at which a defined function z(x) exhibits the maximum value, is introduced to check the validity of JMA model to the kinetics analysis. The value of xm has a constant of 0.632 for JMA model. It is found that the values of xm at different isothermal annealing temperatures (743, 748, 753 and 758 K) are almost near 0.632, which indicates that the isothermal crystallization kinetics can be modeled by JMA equation. However, the values of xm at different heating rates (10, 20, 30 and 40 K/min) are about 0.52, implying that JMA model is not valid to the isochronal crystallization kinetics. The reason why the JMA model is not valid to the isochronal crystallization kinetics is discussed.

  7. Influence of Climate Change on Flood Hazard using Climate Informed Bayesian Hierarchical Model in Johnson Creek River

    Science.gov (United States)

    Zarekarizi, M.; Moradkhani, H.

    2015-12-01

    Extreme events are proven to be affected by climate change, influencing hydrologic simulations for which stationarity is usually a main assumption. Studies have discussed that this assumption would lead to large bias in model estimations and higher flood hazard consequently. Getting inspired by the importance of non-stationarity, we determined how the exceedance probabilities have changed over time in Johnson Creek River, Oregon. This could help estimate the probability of failure of a structure that was primarily designed to resist less likely floods according to common practice. Therefore, we built a climate informed Bayesian hierarchical model and non-stationarity was considered in modeling framework. Principle component analysis shows that North Atlantic Oscillation (NAO), Western Pacific Index (WPI) and Eastern Asia (EA) are mostly affecting stream flow in this river. We modeled flood extremes using peaks over threshold (POT) method rather than conventional annual maximum flood (AMF) mainly because it is possible to base the model on more information. We used available threshold selection methods to select a suitable threshold for the study area. Accounting for non-stationarity, model parameters vary through time with climate indices. We developed a couple of model scenarios and chose one which could best explain the variation in data based on performance measures. We also estimated return periods under non-stationarity condition. Results show that ignoring stationarity could increase the flood hazard up to four times which could increase the probability of an in-stream structure being overtopped.

  8. Rural health care delivery amidst federal retrenchment: lessons from the Robert Wood Johnson Foundation's Rural Practice Project.

    Science.gov (United States)

    Moscovice, I S; Rosenblatt, R A

    1982-12-01

    This paper examines the experience of the Robert Wood Johnson Foundation's Rural Practice Project (RPP), a major non-governmental effort in the last decade concentrating on the direct delivery of rural health services. The nine RPP sites started prior to 1977 showed a slow but steady increase in their utilization levels and improvement in their financial status during their initial operational years. The tempo of their development was remarkably similar to that of federally sponsored practices in underserved rural areas. After four years of operation, all of the practices had completed their period of grant support; the practices survived in all cases, with almost all of the practices still retaining community sponsorship, salaried physicians, and a commitment to comprehensive care. Practices in sparsely populated rural areas and in areas with fewer hospital beds grew more slowly than those set in rural areas with higher population density and more ancillary resources. We conclude that the use of time-limited initial subsidies is an effective strategy in starting new rural practices in underserved areas and that those practices have a good chance of surviving their start-up phase.

  9. Nine years of a single referral center management of Stevens-Johnson syndrome and toxic epidermal necrolysis (Lyell's syndrome).

    Science.gov (United States)

    Monteiro, Diana; Egipto, Paula; Barbosa, Julia; Horta, Ricardo; Amarante, Jose; Silva, Pedro; Silva, Alvaro

    2017-06-01

    Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) corresponds to a rare and acute life-threatening mucocutaneous reactions characterized by extensive necrosis and epidermal detachment. There are no efficacious pharmaceutical interventions proven through large clinical trials. We sought to study clinical cases admitted in our institution in order to determine which drugs and medical comorbidities or treatments impacted the mortality. In a retrospective study over 9 years we evaluated all patients presenting biopsy-proven SJS or TEN for age, gender, total body surface area involved, causing agents, SCORTEN score, blood transfusion, steroid administration, intubation, length of intensive care stay and death rate. Statistical analysis was done using SPSS statistical software. The highest incidence of SJS and TEN was in age group of 71-80 years. Of the 30 patients, 30% died from SJS/TEN, mainly due sepsis. For each subgroup SJS/TEN overlap had the highest mortality. The highest mortality was from antibiotic treatment as causing agent. Step-wise regression analysis identified mechanical ventilation requirement and age over 65 years as mortality high-risk factors. The most crucial interventions are discontinuation of the offending drug and prompt referral to a burn unit, which helps in early diagnosis and decrease mortality in these diseases. When SJS/TEN is caused by antibiotics suspicion of developing fatal sepsis should be high, independently of patients' medical condition.

  10. Opto-electronic response of Spinel SiZn2O4 to a modified Becke-Johnson potential

    Science.gov (United States)

    Ali, Manzar; Mohammad, Saleh; Hayatullah; Haneef, Muhammad; Khan, Mahmood; Murtaza, G.

    2013-09-01

    A first-principles technique capable of describing the nearly excited states of semiconductors and insulators, namely the modified Becke-Johnson (mBJ) potential approximation, is used to investigate the electronic band structure and the optical properties of the spinel oxide SiZn2O4. The band gap predicted using the mBJ approximation is significantly more accurate than those previously proposed theoretical works using the common localized density approximation (LDA) and generalized gradient approximation (GGA). Band-gap-dependent optical parameters, like the dielectric constant, index of refraction, reflectivity and optical conductivity, are calculated and analyzed. The result for the dielectric constant shows that the numerical value of the static dielectric constant, after dropping at the steady rate, becomes less than zero, and the material exhibits a metallic behavior. The refractive index also drops below unity for photons higher than 18 eV, which indicates that the velocities of the incident photons are greater than the velocity of light. However, these phenomena can be explained by the fact that a signal must be transmitted as a wave packet rather than a monochromatic wave. This comprehensive theoretical study of the optoelectronic properties predicts that the materials can be used effectively in the optical devices.

  11. Defining, navigating, and negotiating success: the experiences of mid-career Robert Wood Johnson Clinical Scholar women.

    Science.gov (United States)

    Kalet, Adina L; Fletcher, Kathlyn E; Ferdman, Dina J; Bickell, Nina A

    2006-09-01

    We studied female graduates of the Robert Wood Johnson Clinical Scholars Program (CSP, Class of 1984 to 1989) to explore and describe the complexity of creating balance in the life of mid-career academic woman physicians. We conducted and qualitatively analyzed (kappa 0.35 to 1.0 for theme identification among rater pairs) data from a semi-structured survey of 21 women and obtained their curricula vitae to quantify publications and grant support, measures of academic productivity. Sixteen of 21 (76%) women completed the survey. Mean age was 48 (range: 45 to 56). Three were full professors, 10 were associate professors, and 3 had left academic medicine. Eleven women had had children (mean 2.4; range: 1 to 3) and 3 worked part-time. From these data, the conceptual model expands on 3 key themes: (1) defining, navigating, and negotiating success, (2) making life work, and (3) making work work. The women who described themselves as satisfied with their careers (10/16) had clarity of values and goals and a sense of control over their time. Those less satisfied with their careers (6/16) emphasized the personal and professional costs of the struggle to balance their lives and described explicit institutional barriers to fulfillment of their potential. For this group of fellowship-prepared academic women physicians satisfaction is achieving professional and personal balance.

  12. Síndrome de Stevens Johnson, presentación de un caso en edad pediátrica

    Directory of Open Access Journals (Sweden)

    Maritza Morales Solís

    2015-11-01

    Full Text Available El síndrome de Stevens-Johnson (SSJ es una variante severa del eritema multiforme, consistente en una reacción de hipersensibilización que afecta piel y mucosa, además de otros órganos internos, y que se manifiesta con lesiones en zonas genitales, bucales y cutáneas, es idiopático en el 50% de los casos, generalmente producido por alergia a medicamentos. La muerte sobreviene en el 5-15% de los casos sin tratar. El riesgo de recurrencia es del 37% o más.  Al Hospital Pediátrico Provincial Docente “Mártires de Las Tunas”  fue  traído un niño de seis años  de edad, que tras el uso del Sulfaprín comenzó con lesiones que afectaban la piel y  todas las mucosas, además de toma del estado general. Inmediatamente fue admitido en la Unidad de Cuidados  Intensivos Pediátricos, donde fueron tomadas medidas que incluyeron supresión del agente causal,  corticoterapia endovenosa, antibioticoterapia endovenosa, tratamiento de las lesiones, vigilancia del balance hidromineral y atención oftalmológica, respondiendo favorablemente. Se presenta el caso, por ser una enfermedad poco frecuente y de muy mal pronóstico.

  13. Cutaneous reactions simulating erythema multiforme and Stevens Johnson syndrome due to occupational exposure to a plant-growth regulator

    Directory of Open Access Journals (Sweden)

    Inamadar Arun

    2007-01-01

    Full Text Available Background: In India, hydrogen cyanamide (Dormex ® is a plant growth regulator used mainly for the bud-breaking of grapevines. The use of this chemical may result in severe cutaneous reactions simulating erythema multiforme (EM, Stevens-Johnson syndrome (SJS and toxic epidermal necrolysis (TEN. Methods: Studies were conducted on four seasonal grapevine workers who developed severe cutaneous reactions following the unprotected use of Dormex ® (hydrogen cyanamide. Results: Two of the patients had EM-like skin lesions and the other two developed SJS-TEN-like skin lesions. A latent period of 5-7 days existed between the contact with the chemical and the development of the skin lesions. The histopathological picture was suggestive of EM. All the patients responded to systemic steroids and antihistamines. Conclusions: Hydrogen cyanamide may act as a hapten, initiating cytotoxic immunological attack on keratinocytes, resulting in EM- and SJS-TEN-like clinical picture. Awareness regarding such severe cutaneous reactions due to the inappropriate handling of Dormex ® is required. The use of personal protection equipments while handling agricultural chemicals is essential.

  14. Factors Contributing to Long-Term Severe Visual Impairment in Stevens-Johnson Syndrome and Toxic Epidermal Necrolysis.

    Science.gov (United States)

    Jongkhajornpong, Passara; Lekhanont, Kaevalin; Siriyotha, Sukanya; Kanokrungsee, Silada; Chuckpaiwong, Varintorn

    2017-01-01

    Purpose. To study the correlation between demographics and clinical variables and long-term severe visual impairment in patients with Stevens-Johnson syndrome (SJS) or toxic epidermal necrolysis (TEN). Methods. A retrospective chart review of SJS/TEN patients between 2004 and 2014 was conducted. Demographics, causative agents, ocular manifestations, and visual outcomes were collected. The data were analyzed using a multivariate logistic regression model. Results. Of the 89 patients including SJS (65, 73.03%), TEN (15, 16.85%), and SJS-TEN overlap (9, 10.11%), 55 were female. The mean age was 41.58 ± 19.17 years. The most common identified agents were medications. Among these groups, antibiotics were the most prevalent (47.19%). Three patients (3.7%) had unknown etiology. Antibiotics and nonpharmaceutical triggers were significantly associated with long-term severe visual impairment (odds ratio 4.32; P = 0.015 and 7.20; P = 0.037, resp.). There was a significant negative relationship between HIV infection and long-term severe visual impairment (P = 0.021). Among all chronic ocular complications, only corneal neovascularization significantly correlated with severe visual impairment (P = 0.001). Conclusions. SJS/TEN patients caused by nonpharmaceutical triggers or antibiotics have an increased risk of developing long-term severe visual impairment from corneal neovascularization. HIV infection might be a protective factor against long-term poor visual outcomes.

  15. Adiabatic shear localization evolution for steel based on the Johnson-Cook model and gradient-dependent plasticity

    Institute of Scientific and Technical Information of China (English)

    Xuebin Wang

    2006-01-01

    Gradient-dependent plasticity is introduced into the phenomenological Johnson-Cook model to study the effects of strainhardening, strain rate sensitivity, thermal-softening, and microstructure. The microstructural effect (interactions and interplay among microstructures) due to heterogeneity of texture plays an important role in the process of development or evolution of an adiabatic shear band with a certain thickness depending on the grain diameter. The distributed plastic shear strain and deformation in the shear band are derived and depend on the critical plastic shear strain corresponding to the peak flow shear stress, the coordinate or position, the internal length parameter, and the average plastic shear strain or the flow shear stress. The critical plastic shear strain, the distributed plastic shear strain, and deformation in the shear band are numerically predicted for a kind of steel deformed at a constant shear strain rate.Beyond the peak shear stress, the local plastic shear strain in the shear band is highly nonuniform and the local plastic shear deformation in the band is highly nonlinear. Shear localization is more apparent with the increase of the average plastic shear strain. The calculated distributions of the local plastic shear strain and deformation agree with the previous numerical and experimental results.

  16. Temperature distribution in adiabatic shear band for ductile metal based on JOHNSON-COOK and gradient plasticity models

    Institute of Scientific and Technical Information of China (English)

    WANG Xue-bin

    2006-01-01

    Gradient-dependent plasticity considering interactions and interplay among microstructures was included into JOHNSON-COOK model to calculate the temperature distribution in adiabatic shear band(ASB), the peak and average temperatures as well as their evolutions. The differential local plastic shear strain was derived to calculate the differential local plastic work and the temperature rise due to the microstructural effect. The total temperature in ASB is the sum of initial temperature, temperature rise at strain-hardening stage and non-uniform temperature due to the microstructural effect beyond the peak shear stress. The flow shear stress-average plastic shear strain curve, the temperature distribution, the peak and average temperatures in ASB are computed for Ti-6Al-4V. When the imposed shear strain is less than 2 and the shear strain rate is 1 000 s-1, the dynamic recovery and recrystallization processes occur. However, without the microstructural effect, the processes might have not occurred since heat diffusion decreases the temperature in ASB. The calculated maximum temperature approaches 1 500 K so that phase transformation might take place. The present predictions support the previously experimental results showing that the transformed and deformed ASBs are observed in Ti-6Al-4V. Higher shear strain rate enhances the possibility of dynamic recrystallization and phase transformation.

  17. Effects of constitutive parameters on adiabatic shear localization for ductile metal based on JOHNSON-COOK and gradient plasticity models

    Institute of Scientific and Technical Information of China (English)

    WANG Xue-bin

    2006-01-01

    By using the widely used JOHNSON-COOK model and the gradient-dependent plasticity to consider microstmctural effect beyond the occurrence of shear strain localization, the distributions of local plastic shear strain and deformation in adiabatic shear band(ASB) were analyzed. The peak local plastic shear strain is proportional to the average plastic shear strain, while it is inversely proportional to the critical plastic shear strain corresponding to the peak flow shear stress. The relative plastic shear deformation between the top and base of ASB depends on the thickness of ASB and the average plastic shear strain. A parametric study was carried out to study the influence of constitutive parameters on shear strain localization. Higher values of static shear strength and work to heat conversion factor lead to lower critical plastic shear strain so that the shear localization is more apparent at the same average plastic shear strain. Higher values of strain-hardening exponent, strain rate sensitive coefficient, melting point,thermal capacity and mass density result in higher critical plastic shear strain, leading to less apparent shear localization at the same average plastic shear strain. The strain rate sensitive coefficient has a minor influence on the critical plastic shear strain, the distributions of local plastic shear strain and deformation in ASB. The effect of strain-hardening modulus on the critical plastic shear strain is not monotonous. When the maximum critical plastic shear strain is reached, the least apparent shear localization occurs.

  18. Ultrastructural study of spermatogenesis and sperm in the African medicinal leech Hirudo troctina Johnson, 1816 (Annelida, Hirudinida).

    Science.gov (United States)

    Ben Ahmed, Raja; Tekaya, Saïda; Urbisz, Anna Z; Świątek, Piotr

    2015-06-01

    This paper presents the process of spermatogenesis in the leech Hirudo troctina Johnson, 1816 using light, fluorescent and transmission electron microscopy. At the onset of spermatogenesis in testes, the pear-shaped spermatogonia divide mitotically without full cytokinesis and as a result isogenic groups are formed (clusters, clones) with 2, 4, 8, 16, 32, 64, 128 spermatogonia and, finally, 256 primary spermatocytes occur. The final meiotic divisions of spermatocytes give rise to clones with 1024 spermatids. There are hundreds of developing germ-line clones in each testis. In each clone, the male germ cells divide in full synchrony and they are in the same phase of spermatogenesis. During complex spermiogenesis each spermatid becomes a filiform spermatozoon with a helicoid nucleus, which is characterized by the presence of a long acrosome with two regions - anterior and posterior, which are followed by a helicoid nucleus, a midpiece with only one mitochondrion and a long flagellum. Our results were compared to those on other clitellate annelids that have been studied to date, especially to sperm formation in Hirudo medicinalis Linnaeus, 1785. Only minor differences were found in the length and the diameter of different organelles and the number of spermatids in germ-line clones.

  19. Literature as an exploration of the phenomenology of schizophrenia: disorder and recovery in Denis Johnson's Jesus' Son.

    Science.gov (United States)

    Hamm, Jay A; Leonhardt, Bethany L; Fogley, Rebecca L; Lysaker, Paul H

    2014-12-01

    When read as a fictional psychosis narrative, Jesus' Son, a collection of short stories by Denis Johnson, reveals important elements of the phenomenology of schizophrenia and recovery. It is possible that Jesus' Son, as a work of fiction, may be able to uniquely add depth and nuance to an understanding of the phenomenology of schizophrenia involving a state of psychological fragmentation, an ever-changing interpersonal field and a loss of personal agency. In addition, by following the protagonist in Jesus' Son as he begins to resolve some of his difficulties, the book also offers an individualised account of recovery. The authors detail how the book reveals these insights about schizophrenia and recovery and suggest that these elements are intertwined in such a manner that leads to a profound disruption of self-experience, characterised by a collapse of metacognitive processes. Jesus' Son may add depth to our understanding of the subjective experience of schizophrenia and recovery, and also may serve as one example in which the study of humanities offers an opportunity to explore the human elements in the most profound forms of suffering.

  20. Optical response of mixed molybdenum dichalcogenides for solar cell applications using the modified Becke-Johnson potential

    Energy Technology Data Exchange (ETDEWEB)

    Ahuja, Ushma [Sardar Patel College of Engineering, Mumbai (India). Dept. of Electrical Engineering; Joshi, Ritu; Venugopalan, K. [M.L. Sukhadia Univ., Udaipur (India). Dept. of Physics; Kothari, D.C. [Mumbai Univ. (India). National Center for Nanosciences and Nanotechnology; Tiwari, Harpal [Malaviya National Institute of Technology, Jaipur (India). Dept. of Electrical Engineering

    2016-07-01

    Energy bands and density of states (DOS) of mixed molybdenum dichalcogenides like MoS{sub 2}, MoSeS, MoSe{sub 2}, MoTe{sub 2}, MoTeS, and MoTe{sub 0.5}S{sub 1.5} are reported for the first time using the Tran-Blaha modified Becke-Johnson potential within full potential-linearised augmented plane wave technique. From the partial DOS, a strong hybridisation between the Mo-d and chalcogen-p states is observed below the Fermi energy E{sub F}. In addition, the dielectric constants, absorption coefficients, and refractivity spectra of these compounds have also been deduced. The integrated absorption coefficients derived from the frequency-dependent absorption spectra within the energy range of 0-4.5 eV show a possibility of using molybdenum dichalcogenides, particularly MoTe{sub 0.5}S{sub 1.5}, in solar cell applications. Birefringence and degree of anisotropy are also discussed using the data on refractivity and imaginary components of the dielectric constant.

  1. Developing evidence for structural approaches to build a culture of health: a perspective from the Robert Wood Johnson Foundation.

    Science.gov (United States)

    Mockenhaupt, Robin; Woodrum, Amy

    2015-04-01

    We believe that reframing the conversation to creating a culture around health rather than focusing on discrete actions or activities will capture national consciousness and enable us to make new progress as a nation. Thus, in 2014, the Robert Wood Johnson Foundation (RWJF) announced a new vision to help build a "Culture of Health" to enable everyone in our diverse society to lead healthier lives now and for generations to come. In supporting the development of this supplement of Health Education & Behavior, RWJF sought to contribute to a better understanding of the ways in which policy, environmental, and financial approaches can contribute to such a Culture of Health. However, while this supplement issue of Health Education & Behavior stands as a testament to the fact that a broad evidence base, rather than a single approach to health improvement, is necessary to have an impact on social change, more empirical evidence is needed on structural approaches if we are to be successful in understanding and improving health outcomes for individuals, families, communities, states, and nations. © 2015 Society for Public Health Education.

  2. Cognitive engineering models in space systems

    Science.gov (United States)

    Mitchell, Christine M.

    1993-01-01

    NASA space systems, including mission operations on the ground and in space, are complex, dynamic, predominantly automated systems in which the human operator is a supervisory controller. Models of cognitive functions in complex systems are needed to describe human performance and form the theoretical basis of operator workstation design, including displays, controls, and decision aids. Currently, there several candidate modeling methodologies. They include the Rasmussen abstraction/aggregation hierarchy and decision ladder, the goal-means network, the problem behavior graph, and the operator function model. The research conducted under the sponsorship of this grant focuses on the extension of the theoretical structure of the operator function model and its application to NASA Johnson mission operations and space station applications. The initial portion of this research consists of two parts. The first is a series of technical exchanges between NASA Johnson and Georgia Tech researchers. The purpose is to identify candidate applications for the current operator function model; prospects include mission operations and the Data Management System Testbed. The second portion will address extensions of the operator function model to tailor it to the specific needs of Johnson applications. At this point, we have accomplished two things. During a series of conversations with JSC researchers, we have defined the technical goal of the research supported by this grant to be the structural definition of the operator function model and its computer implementation, OFMspert. Both the OFM and OFMspert have matured to the point that they require infrastructure to facilitate use by researchers not involved in the evolution of the tools. The second accomplishment this year was the identification of the Payload Deployment and Retrieval System (PDRS) as a candidate system for the case study. In conjunction with government and contractor personnel in the Human-Computer Interaction Lab

  3. Design spaces

    DEFF Research Database (Denmark)

    2005-01-01

    Digital technologies and media are becoming increasingly embodied and entangled in the spaces and places at work and at home. However, our material environment is more than a geometric abstractions of space: it contains familiar places, social arenas for human action. For designers, the integration...... alternatives for integrating digital technology with space. Connecting practical design work with conceptual development and theorizing, art with technology, and usesr-centered methods with social sciences, Design Spaces provides a useful research paradigm for designing ubiquitous computing. This book...... of digital technology with space poses new challenges that call for new approaches. Creative alternatives to traditional systems methodologies are called for when designers use digital media to create new possibilities for action in space. Design Spaces explores how design and media art can provide creative...

  4. Astronaut Koichi Wakata, representing Japan's National Space Development Agency (NASDA) and assigned

    Science.gov (United States)

    1996-01-01

    STS-72 TRAINING VIEW --- Astronaut Koichi Wakata, representing Japan's National Space Development Agency (NASDA) and assigned as mission specialist for the STS-72 mission, checks over a copy of the flight plan. Wakata is on the flight deck of the fixed base Shuttle Mission Simulator (SMS) at the Johnson Space Center (JSC). In the background is astronaut Brent W. Jett, pilot. The two will join four NASA astronauts aboard Space Shuttle Endeavour for a scheduled nine-day mission, now set for the winter of this year.

  5. Space Environment's Effects on Seal Materials

    Science.gov (United States)

    deGroh, Henry C., III; Daniels, Christopher C.; Dunlap, Patrick; Miller, Sharon; Dever, Joyce; Waters, Deborah; Steinetz, Bruce M.

    2007-01-01

    A Low Impact Docking System (LIDS) is being developed by the NASA Johnson Space Center to support future missions of the Crew Exploration Vehicle (CEV). The LIDS is androgynous, such that each system half is identical, thus any two vehicles or modules with LIDS can be coupled. Since each system half is a replica, the main interface seals must seal against each other instead of a conventional flat metal surface. These sealing surfaces are also expected to be exposed to the space environment when vehicles are not docked. The NASA Glenn Research Center (NASA GRC) is supporting this project by developing the main interface seals for the LIDS and determining the durability of candidate seal materials in the space environment. In space, the seals will be exposed to temperatures of between 50 to 50 C, vacuum, atomic oxygen, particle and ultraviolet radiation, and micrometeoroid and orbital debris (MMOD). NASA GRC is presently engaged in determining the effects of these environments on our candidate elastomers. Since silicone rubber is the only class of seal elastomer that functions across the expected temperature range, NASA GRC is focusing on three silicone elastomers: two provided by Parker Hannifin (S0-899-50 and S0-383-70) and one from Esterline Kirkhill (ELA-SA-401). Our results from compression set, elastomer to elastomer adhesion, and seal leakage tests before and after various simulated space exposures will be presented.

  6. Dual Use Space Technology Transfer Conference Paper

    Science.gov (United States)

    Orndoff, Evelyne

    1994-01-01

    New textile fibers have been developed or modified to meet the complex and constraining criteria of space applications. The most common of these criteria are light weight, nonflammability or flame retardancy, and high strength and durability in both deep space environment and the oxygen enriched crew bay area of the spacecraft. The fibers which successfully pass the tests of flammability and toxicity, and display the desired mechanical properties are selected for space applications. Such advanced fibers developed for the Crew and Thermal Systems Division (CTSD) at the Johnson Space Center include 'Beta' fiber, heat stabilized polybenzimidazole and polyimide, as well as modified aramid Durette(TM), multi-fibrous Ortho(TM) fabric, and flame resistant cotton. The physical, mechanical, and chemical properties of these fibers are briefly discussed. The testing capabilities in the CTSD laboratory to ascertain some of the properties of these and other fibrous materials are also discussed. Most of these materials developed for spacecraft, space suit, and flight equipment applications have found other commercial applications. These advanced textile fibers are used mostly for aircraft, transportation, public buildings, hospitals, and protective clothing applications.

  7. Space Commercialization

    Science.gov (United States)

    Martin, Gary L.

    2011-01-01

    A robust and competitive commercial space sector is vital to continued progress in space. The United States is committed to encouraging and facilitating the growth of a U.S. commercial space sector that supports U.S. needs, is globally competitive, and advances U.S. leadership in the generation of new markets and innovation-driven entrepreneurship. Energize competitive domestic industries to participate in global markets and advance the development of: satellite manufacturing; satellite-based services; space launch; terrestrial applications; and increased entrepreneurship. Purchase and use commercial space capabilities and services to the maximum practical extent Actively explore the use of inventive, nontraditional arrangements for acquiring commercial space goods and services to meet United States Government requirements, including measures such as public-private partnerships, . Refrain from conducting United States Government space activities that preclude, discourage, or compete with U.S. commercial space activities. Pursue potential opportunities for transferring routine, operational space functions to the commercial space sector where beneficial and cost-effective.

  8. Technical Update: Johnson Space Center system using a solid electrolytic cell in a remote location to measure oxygen fugacities in CO/CO2 controlled-atmosphere furnaces

    Science.gov (United States)

    Jurewicz, A. J. G.; Williams, R. J.; Le, L.; Wagstaff, J.; Lofgren, G.; Lanier, A.; Carter, W.; Roshko, A.

    1993-01-01

    Details are given for the design and application of a (one atmosphere) redox-control system. This system differs from that given in NASA Technical Memorandum 58234 in that it uses a single solid-electrolytic cell in a remote location to measure the oxygen fugacities of multiple CO/CO2 controlled-atmosphere furnaces. This remote measurement extends the range of sample-furnace conditions that can be measured using a solid-electrolytic cell, and cuts costs by extending the life of the sensors and by minimizing the number of sensors in use. The system consists of a reference furnace and an exhaust-gas manifold. The reference furnace is designed according to the redox control system of NASA Technical Memorandum 58234, and any number of CO/CO2 controlled-atmosphere furnaces can be attached to the exhaust-gas manifold. Using the manifold, the exhaust gas from individual CO/CO2 controlled atmosphere furnaces can be diverted through the reference furnace, where a solid-electrolyte cell is used to read the ambient oxygen fugacity. The oxygen fugacity measured in the reference furnace can then be used to calculate the oxygen fugacity in the individual CO/CO2 controlled-atmosphere furnace. A BASIC computer program was developed to expedite this calculation.

  9. Stardust Curation at Johnson Space Center: Photo Documentation and Sample Processing of Submicron Dust Samples from Comet Wild 2 for Meteoritics Science Community

    Science.gov (United States)

    Nakamura-Messenger, K.; Zolensky, M. E.; Bastien, R.; See, T. H.; Warren, J. L.; Bevill, T. J.; Cardenas, F.; Vidonic, L. F.; Horz, F.; McNamara, K. M.; Allen, C. C.; Westphal, A. J.; Snead, C.; Ishii, H. A.; Brownlee, D.

    2007-01-01

    Dust particles released from comet 81P/Wild-2 were captured in silica aerogel on-board the STARDUST spacecraft and successfully returned to the Earth on January 15, 2006. STARDUST recovered thousands of particles ranging in size from 1 to 100 micrometers. The analysis of these samples is complicated by the small total mass collected ( < 1mg), its entrainment in the aerogel collection medium, and the fact that the cometary dust is comprised of submicrometer minerals and carbonaceous material. During the six month Preliminary Examination period, 75 tracks were extracted from the aerogel cells , but only 25 cometary residues were comprehensively studied by an international consortium of 180 scientists who investigated their mineralogy/petrology, organic/inorganic chemistry, optical properties and isotopic compositions. These detailed studies were made possible by sophisticated sample preparation methods developed for the STARDUST mission and by recent major advances in the sensitivity and spatial resolution of analytical instruments.

  10. Waveform Design and Scheduling in Space-Time Adaptive Radar

    Science.gov (United States)

    2013-01-01

    is the LS estimate of s. After some straightforward matrix algebra , the solution to (25) is simplified further, i.e. ŝi = Hµh H , i = 1, 2, . . . N...L. Timmoneri, “The MVDR vectorial lattice applied to space-time processing for AEW radar with large instantaneous bandwidth,” IEE Proc. Radar, Sonar...1408–1418, Jun. 1969. [9] R. Horn and C. Johnson, Topics in Matrix Analysis. Cambridge University Press, 1994. [10] G. Strang, Linear Algebra and Its Applications. Thomson, Brooks/Cole, 2006.

  11. Mandibulofacial dysostosis, severe lower eyelid coloboma, cleft palate, and alopecia: A new distinct form of mandibulofacial dysostosis or a severe form of Johnson-McMillin syndrome?

    Science.gov (United States)

    Zechi-Ceide, Roseli Maria; Guion-Almeida, Maria Leine; Jehee, Fernanda Sarquis; Rocha, Katia; Passos-Bueno, Maria Rita Santos

    2010-07-01

    We describe a patient with a phenotype characterized by mandibulofacial dysostosis with severe lower eyelid coloboma, cleft palate, abnormal ears, alopecia, delayed eruption and crowded teeth, and sensorioneural hearing loss. The karyotype and the screening for mutations in the coding region of TCOF1 gene were normal. The clinical signs of our case overlap the new mandibulofacial dysostosis described by Stevenson et al. [2007] and the case with Johnson-McMillin syndrome described by Cushman et al. [2005]. The similar clinical signs, mainly, the severe facial involvement observed in these cases suggest that they can represent a new distinct form of mandibulofacial dysostosis or the end of the spectrum of Johnson-McMillin syndrome.

  12. The HLA-B*15:02 allele in a Spanish Romani patient with carbamazepine-induced Stevens-Johnson syndrome.

    Science.gov (United States)

    Bellón, Teresa; Ramírez, Elena; Borobia, Alberto M; Lerma, Victoria; Moreno-Hidalgo, Miguel A; Laosa, Olga; Aramburu, José A; González-Herrada, Carlos; de Abajo, Francisco J

    2016-04-01

    The HLA-B*15:02 allele is a risk factor for carbamazepine (CBZ)-induced Stevens-Johnson syndrome/toxic epidermal necrolysis in populations where the allele is prevalent. Han Chinese and Thai patients are advised to take a genetic test before introducing CBZ. Such testing is not recommended for patients of European descent. We report the case of a Spanish Romani patient who developed Stevens-Johnson syndrome upon treatment with CBZ. In vitro assays confirmed CBZ as the culprit drug. HLA typing showed that the patient carried the HLA-B*15:02 allele. A public database search revealed that 2% of Spanish Romani people likely carry the risk variant HLA-B*15:02 and therefore may be included in the population to be tested prior to beginning treatment with CBZ.

  13. Famous people with Tourette′s syndrome: Dr. Samuel Johnson (yes & Wolfgang Amadeus Mozart (may be: Victims of Tourette′s syndrome?

    Directory of Open Access Journals (Sweden)

    Kalyan B Bhattacharyya

    2015-01-01

    Full Text Available Tourette′s syndrome is a clinical condition characterized by multiple motor tics and vocal tics which occurs in the age range 5-25 years and the intensity of the symptoms changes with time. It is felt that at least two remarkable personalities namely, Dr. Samuel Johnson from England, a man of letters and the compiler of the first ever English dictionary, and Wolfgang Amadeus Mozart from Austria, one of the greatest musical genius of all time, possibly suffered from this condition. Tourette′s syndrome is often described as the classical borderzone between neurology and psychiatry and every neurologist wonders at the curious and fascinating clinical features of this condition. It seems that at least two remarkable personalities, Dr. Samuel Johnson, a man of letters and the first person to compile an English dictionary, and Wolfgang Amadeus Mozart, arguably the most creative musical composer of all time, were possibly afflicted with this condition.

  14. Space Suits and Crew Survival Systems Branch Education and Public Outreach Support of NASA's Strategic Goals in Fiscal Year 2012

    Science.gov (United States)

    Jennings, Mallory A.

    2013-01-01

    As NASA plans to send people beyond low Earth orbit, it is important to educate and inspire the next generation of astronauts, engineers, scientists, and the general public. This is so important to NASA s future that it is one of the agency s strategic goals. The Space Suits and Crew Survival Systems Branch at Johnson Space Center (JSC) is actively involved in achieving this goal by sharing our hardware and technical experts with students, educators, and the general public and educating them about the challenges of human space flight, with Education and Public Outreach (EPO). This paper summarizes the Space Suit and Crew Survival Systems Branch EPO efforts throughout fiscal year 2012.

  15. SPASTIC FORM OF CEREBRAL PALSY, EPILEPSY WITH BENIGN EPILEPTIFORM DISCHARGE OF CHILDHOOD ON ELECTROENCEPHALOGRAM, AND IATROGENIC STEVENS–JOHNSON SYNDROME (CASE DESCRIPTION

    Directory of Open Access Journals (Sweden)

    A. S. Kotov

    2016-01-01

    Full Text Available The article describes the phenomenon of dual pathology – a combination of structural changes in the brain and benign epileptiform discharge of childhood on electroencephalogram. The uniqueness lies in the observation that the child, since birth suffering from spastic form of cerebral palsy and severe epilepsy, demonstrated the development of Stevens–Johnson syndrome due to intolerance of one of the antiepileptic drugs. Therapeutic approaches to overcome a whole range of violations are discussed in the article.

  16. Learning Spaces

    CERN Document Server

    Falmagne, Jean-Claude

    2011-01-01

    Learning spaces offer a rigorous mathematical foundation for practical systems of educational technology. Learning spaces generalize partially ordered sets and are special cases of knowledge spaces. The various structures are investigated from the standpoints of combinatorial properties and stochastic processes. Leaning spaces have become the essential structures to be used in assessing students' competence of various topics. A practical example is offered by ALEKS, a Web-based, artificially intelligent assessment and learning system in mathematics and other scholarly fields. At the heart of A

  17. Morrey spaces

    CERN Document Server

    Adams, David R

    2015-01-01

    In this set of lecture notes, the author includes some of the latest research on the theory of Morrey Spaces associated with Harmonic Analysis. There are three main claims concerning these spaces that are covered: determining the integrability classes of the trace of Riesz potentials of an arbitrary Morrey function; determining the dimensions of singular sets of weak solutions of PDE (e.g. The Meyers-Elcart System); and determining whether there are any “full” interpolation results for linear operators between Morrey spaces. This book will serve as a useful reference to graduate students and researchers interested in Potential Theory, Harmonic Analysis, PDE, and/or Morrey Space Theory. .

  18. Strain effects on the electronic structure of ZnSnP{sub 2} via modified Becke–Johnson exchange potential

    Energy Technology Data Exchange (ETDEWEB)

    Xu, Ying, E-mail: yingxuy@126.com [School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201 (China); Ao, Zhi Min [Centre for Clean Energy Technology, School of Chemistry and Forensic Science, University of Technology Sydney, PO Box 123, Broadway, Sydney, NSW 2007 (Australia); Zou, Dai Feng; Nie, Guo Zheng; Sheng, Wei [School of Physics and Electronic Science, Hunan University of Science and Technology, Xiangtan 411201 (China); Yuan, Ding Wang [College of Materials Science and Engineering, Hunan University, ChangSha 410082 (China)

    2015-02-20

    ZnSnP{sub 2} is a promising photovoltaic absorber material with a direct band gap of 1.68 eV, further reducing the band gap of ZnSnP{sub 2} that can achieve higher photovoltaic conversion efficiency. To achieve this target, the influence of biaxial in-plane strain (±3%) on the band gap, hole effective mass and optical properties of ZnSnP{sub 2} were investigated by first-principles calculations via Modified Becke–Johnson exchange potential. The results indicate that the biaxial tensile strain can reduce the band gap of ZnSnP{sub 2} from 1.3 eV to 1.0 eV and enhance the absorption of visible light of c-axis direction, while the biaxial compress strain increases the band gap of ZnSnP{sub 2} slightly. This research provides an alternative approach to tune the band gap of ZnSnP{sub 2} by strains. The variation of the band gap under different strains is determined by the highest-energy valance band state, and it can be explained by the redistribution of electrons under different strain. - Highlights: • The influence of biaxial in-plane strain (±3%) on the band gap of ZnSnP{sub 2} were investigated by DFT calculations. • MBJ exchange potential can describe the band structure of ZnSnP{sub 2} quite well. • Tensile strain brings a substantial decrease of the band gap, while the compress strain has no evident effect. • The calculated visible light adsorption coefficient increases along c-axis direction under tensile strain.

  19. Influence of anatomy and basic density on specific cutting force for wood from Corymbia citriodora Hill & Johnson

    Directory of Open Access Journals (Sweden)

    Luiz-E. de L. Melo

    2015-12-01

    Full Text Available Aim of the study: The aim of this study was to evaluate the influence of xylem tissue cell structure, determined through biometry and basic density of the wood from Corymbia citriodora Hill & Johnson on consumption of specific 90º-0º longitudinal cutting force.Area of study: The study area was in the region of the Vale do Rio Doce - Minas Gerais, Brazil.Material and methods: A diametrical board with dimensions of 60 x 18 x 5 cm (length x width x thickness, respectively, with more than 1.3 m from the ground, was removed. In machining trials, a 400 mm diameter circular saw was used, with 24 “WZ” teeth, feed rate of 10 m.min-1, cutting speed of 61 m.s-1, and maximum instantaneous torque of 92.5 N.m. During cutting, test specimens were removed with alternated and parallel 1.5 cm edges in 6 radial positions, which were used for biometric determination of cell structure and basic density.Main results: It was observed that wood basic density, vessel diameter, fiber wall thickness, fiber wall fraction and fiber wall portion were directly proportional to the specific cutting force. In contrast, vessel frequency and fiber lumen diameter proved to be inversely proportional to cutting force.Research highlights: This work provides important values of quantification of influence of xylem tissue cell structure, determined through biometry and physical properties of the wood that may be used to prediction of consumption of specific cutting force.Keywords: wood machining; wood properties; optimization of the process.

  20. Adiabatic Shear Localization for Steels Based on Johnson-Cook Model and Second- and Fourth-Order Gradient Plasticity Models

    Institute of Scientific and Technical Information of China (English)

    WANG Xue-bin

    2007-01-01

    To consider the effects of the interactions and interplay among microstructures, gradient-dependent models of second- and fourth-order are included in the widely used phenomenological Johnson-Cook model where the effects of strain-hardening, strain rate sensitivity, and thermal-softening are successfully described. The various parameters for 1006 steel, 4340 steel and S-7 tool steel are assigned. The distributions and evolutions of the local plastic shear strain and deformation in adiabatic shear band (ASB) are predicted. The calculated results of the second- and fourth-order gradient plasticity models are compared. S-7 tool steel possesses the steepest profile of local plastic shear strain in ASB, whereas 1006 steel has the least profile. The peak local plastic shear strain in ASB for S-7 tool steel is slightly higher than that for 4340 steel and is higher than that for 1006 steel. The extent of the nonlinear distribution of the local plastic shear deformation in ASB is more apparent for the S-7 tool steel, whereas it is the least apparent for 1006 steel. In fourth-order gradient plasticity model, the profile of the local plastic shear strain in the middle of ASB has a pronounced plateau whose width decreases with increasing average plastic shear strain, leading to a shrink of the portion of linear distribution of the profile of the local plastic shear deformation. When compared with the second-order gradient plasticity model, the fourth-order gradient plasticity model shows a lower peak local plastic shear strain in ASB and a higher magnitude of plastic shear deformation at the top or base of ASB, which is due to wider ASB. The present numerical results of the second- and fourth-order gradient plasticity models are consistent with the previous numerical and experimental results at least qualitatively.

  1. Optoelectronic and thermoelectric properties of Zintl YLi3 A 2 (A = Sb, Bi) compounds through modified Becke-Johnson potential

    Science.gov (United States)

    Seddik, T.; Uğur, G.; Khenata, R.; Uğur, Ş.; Soyalp, F.; Murtaza, G.; Rai, D. P.; Bouhemadou, A.; Omran, S. Bin

    2016-10-01

    In the present work, we investigate the structural, optoelectronic and thermoelectric properties of the YLi3 X 2 (X = Sb, Bi) compounds using the full potential augmented plane wave plus local orbital (FP-APW+lo) method. The exchange-correlation potential is treated with the generalized gradient approximation/local density approximation (GGA/LDA) and with the modified Becke-Johnson potential (TB-mBJ) in order to improve the electronic band structure calculations. In addition, the estimated ground state properties such as the lattice constants, external parameters, and bulk moduli agree well with the available experimental data. Our band structure calculations with GGA and LDA predict that both compounds have semimetallic behaviors. However, the band structure calculations with the GGA/TB-mBJ approximation indicate that the ground state of the YLi3Sb2 compound is semiconducting and has an estimated indirect band gap (Γ-L) of about 0.036 eV while the ground state of YLi3Bi2 compound is semimetallic. Conversely the LDA/TB-mBJ calculations indicate that both compounds exhibit semiconducting characters and have an indirect band gap (Γ-L) of about 0.15 eV and 0.081 eV for YLi3Sb and YLi3Bi2 respectively. Additionally, the optical properties reveal strong responses of the herein materials in the energy range between the IR and extreme UV regions. Thermoelectric properties such as thermal conductivity, electrical conductivity, Seebeck coefficient, and thermo power factors are also calculated.

  2. Spatiotemporal variability of inorganic nutrients during wastewater effluent dominated streamflow conditions in Indian Creek, Johnson County, Kansas, 2012–15

    Science.gov (United States)

    Foster, Guy M.; Graham, Jennifer L.; Williams, Thomas J.; King, Lindsey R.

    2016-10-31

    Nutrients, particularly nitrogen and phosphorus, are a leading cause of water-quality impairment in Kansas and the Nation. Indian Creek is one of the most urban drainage basins in Johnson County, Kansas, and environmental and biological conditions are affected by contaminants from point and other urban sources. The Johnson County Douglas L. Smith Middle Basin (hereinafter Middle Basin) wastewater treatment facility (WWTF) is the largest point-source discharge on Indian Creek. A second facility, the Tomahawk Creek WWTF, discharges into Indian Creek approximately 11.6 kilometers downstream from the Middle Basin WWTF. To better characterize the spatiotemporal variability of nutrients in Indian Creek, the U.S. Geological Survey, in cooperation with the Kansas Department of Health and Environment and Johnson County Wastewater, collected high-resolution spatial and temporal (a large number of samples collected over the entire reach or at single locations over a long period of time) inorganic nutrient (nitrate plus nitrite and orthophosphorus) data using a combination of discrete samples and sensor-measured data during 2012 through 2015.Nutrient patterns observed in Indian Creek along the upstream-downstream gradient during wastewater effluent dominated streamflow conditions were largely affected by the WWTFs and by travel time of the parcels of water. Nitrate plus nitrite concentrations in the Middle Basin WWTF effluent and at downstream sites varied by as much as 6 milligrams per liter over a 24-hour period. The cyclical variability in the Middle Basin WWTF effluent generated a nitrate plus nitrite pulse that could be tracked for approximately 11.5 kilometers downstream in Indian Creek, until the effect was masked by the Tomahawk Creek WWTF effluent discharge. All longitudinal surveys showed the same general patterns along the upstream-downstream gradient, though streamflows, wastewater effluent contributions to streamflow, and nutrient concentrations spanned a wide

  3. Summing Up / Garry Johnson

    Index Scriptorium Estoniae

    Johnson, Garry

    2003-01-01

    Kokkuvõte 22.-23. septembrini 2003 Vilniuses toimunud seminari "South Caucasus: making the best use of external assistance for stability building and for co-operation with NATO" ettekannetest Balti- ja Lõuna-Kaukaasia regiooni riikide vahelise sõjalis- ja julgeolekualase koostöö arendamisest

  4. Summing Up / Garry Johnson

    Index Scriptorium Estoniae

    Johnson, Garry

    2003-01-01

    Kokkuvõte 22.-23. septembrini 2003 Vilniuses toimunud seminari "South Caucasus: making the best use of external assistance for stability building and for co-operation with NATO" ettekannetest Balti- ja Lõuna-Kaukaasia regiooni riikide vahelise sõjalis- ja julgeolekualase koostöö arendamisest

  5. Robert Wood Johnson Foundation

    Science.gov (United States)

    ... Kids, Healthy Weight About RWJF Annual Messages Financials Job Opportunities Leadership and Staff Our Policies New Jersey: Our ... Kids, Healthy Weight About RWJF Annual Messages Financials Job Opportunities Leadership & Staff New Jersey: Our Home State Newsroom ...

  6. Space Bugz!

    DEFF Research Database (Denmark)

    Birke, Alexander; Schoenau-Fog, Henrik; Reng, Lars

    2012-01-01

    This paper presents Space Bugz! - a novel crowd game for large venues or cinemas that utilises the audience's smartphones as controllers for the game. This paper explains what crowd gaming is and describes how the approach used in Space Bugz! enables more advanced gameplay concepts and individual...

  7. Bispinor Space

    Institute of Scientific and Technical Information of China (English)

    Lin ZHU; Xiu Hong FENG; Yan Lin YU

    2007-01-01

    In this paper, we give identifications of bispinor space with Grassmann algebra, and with Clifford algebra. The multiplication in Clifford algebra provides an action on them. Lastly we have researched on the geometry of bispinor space, and define Dirac operators to get a Pythagoras equality.

  8. Space psychology

    Science.gov (United States)

    Parin, V. V.; Gorbov, F. D.; Kosmolinskiy, F. P.

    1974-01-01

    Psychological selection of astronauts considers mental responses and adaptation to the following space flight stress factors: (1) confinement in a small space; (2) changes in three dimensional orientation; (3) effects of altered gravity and weightlessness; (4) decrease in afferent nerve pulses; (5) a sensation of novelty and danger; and (6) a sense of separation from earth.

  9. Space Telescope.

    Science.gov (United States)

    National Aeronautics and Space Administration, Huntsville, AL. George C. Marshall Space Flight Center.

    This pamphlet describes the Space Telescope, an unmanned multi-purpose telescope observatory planned for launch into orbit by the Space Shuttle in the 1980s. The unique capabilities of this telescope are detailed, the major elements of the telescope are described, and its proposed mission operations are outlined. (CS)

  10. Borel Spaces

    CERN Document Server

    Berberian, S K

    2002-01-01

    A detailed exposition of G.W. Mackey's theory of Borel spaces (standard, substandard, analytic), based on results in Chapter 9 of Bourbaki's General Topology. Appended are five informal lectures on the subject (given at the CIMPA/ICPAM Summer School, Nice, 1986), sketching the connection between Borel spaces and representations of operator algebras.

  11. Performative Spaces

    DEFF Research Database (Denmark)

    Svaneklink, Annette

    2009-01-01

    that can be related to traditional architectural concepts in terms of dealing with space, body, time and movement. The paper considers this performativity and dual spatiality as being a processual architecture, constantly reconfiguring new hybrids between space, image and user. This dual spatiality raises...

  12. Deep Space Habitat ECLSS Design Concept

    Science.gov (United States)

    Curley, Su; Stambaugh, Imelda; Swickrath, Michael; Anderson, Molly S.; Rotter, Henry

    2012-01-01

    Life support is vital to human spaceflight, and most current life support systems employ single-use hardware or regenerable technologies that throw away the waste products, relying on resupply to make up the consumables lost in the process. Because the long-term goal of the National Aeronautics and Space Administration is to expand human presence beyond low-earth orbit, life support systems must become self-sustaining for missions where resupply is not practical. From May through October 2011, the life support team at the Johnson Space Center was challenged to define requirements, develop a system concept, and create a preliminary life support system design for a non-planetary Deep Space Habitat that could sustain a crew of four in near earth orbit for a duration of 388 days. Some of the preferred technology choices to support this architecture were passed over because the mission definition has an unmanned portion lasting 825 days. The main portion of the architecture was derived from technologies currently integrated on the International Space Station as well as upcoming technologies with moderate Technology Readiness Levels. The final architecture concept contains only partially-closed air and water systems, as the breakeven point for some of the closure technologies was not achieved with the mission duration.

  13. Physical data collected in the North Atlantic Ocean on the SEWARD JOHNSON cruises SJ9506 and SJ9508 as part of the GB project from 1995-04-24 to 1995-06-15 (NODC Accession 0098780)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Acoustic Doppler Current Profiler Observations Current Vectors, April - June 1995 Ship: R/V Seward Johnson Cruises/Dates: SJ9506/April 26 - May 2, 1995 SJ9508/June 6...

  14. Temperature profile data collected using XBTs from the PRESIDENT JOHNSON from the Pacific Ocean during the Thermal Structure Monitoring Program in the Pacific (TRANSPAC) project, 1977-01-21 to 1977-01-29 (NCEI Accession 8100153)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature profile data were collected using bathythermograph (BT/XBT) casts from PRESIDENT JOHNSON in the Pacific Ocean from January 21, 1977 to January 29, 1977....

  15. Zooplankton densities and other data from pump casts in the Atlantic Ocean (Georges Bank) from the OCEANUS and SEWARD JOHNSON from 11 June 1995 to 23 May 1997 (NODC Accession 0000515)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Zooplankton and other data were collected from the OCEANUS and SEWARD JOHNSON from 11 June 1995 to 23 May 1997. Data were submitted by the Bigelow Laboratory for...

  16. Oceanographic Data collected during the Florida Shelf Edge Expedition (FLoSEE) (CIOERT2010) on RV Seward Johnson in the Gulf of Mexico and North Atlantic Ocean between July 9, 2010 - August 9, 2010 (NODC Accession 0074541)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A science team on the research vessel Seward Johnson left from Fort Pierce, Fla. in early July to go to the eastern Gulf of Mexico. The researchers used a...

  17. NRDA-processed CTD data from the SEWARD JOHNSON in the Gulf of Mexico, Cruise 1 Leg 3, collected from 2010-07-24 to 2010-08-02, associated with the Deepwater Horizon Oil Spill event (NCEI Accession 0128343)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Conductivity Temperature and Depth (CTD) measurements were collected aboard the R/V Seward Johnson, Cruise 1, Leg 3, to determine physical oceanographic parameters...

  18. NRDA-processed CTD data from the SEWARD JOHNSON in the Gulf of Mexico, Cruise 1 Leg 1, collected from 2010-07-10 to 2010-07-14, associated with the Deepwater Horizon Oil Spill event (NCEI Accession 0128341)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Conductivity Temperature and Depth (CTD) measurements were collected aboard the R/V Seward Johnson, Cruise 1, Leg 1, to determine physical oceanographic parameters...

  19. NRDA-processed CTD data from the SEWARD JOHNSON in the Gulf of Mexico, Cruise 1 Leg 4, collected from 2010-08-04 to 2010-08-08, associated with the Deepwater Horizon Oil Spill event (NCEI Accession 0128344)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Conductivity Temperature and Depth (CTD) measurements were collected aboard the R/V Seward Johnson, Cruise 1, Leg 4, to determine physical oceanographic parameters...

  20. NRDA-processed CTD data from the SEWARD JOHNSON in the Gulf of Mexico, Cruise 1 Leg 2, collected from 2010-07-16 to 2010-07-22, associated with the Deepwater Horizon Oil Spill event (NCEI Accession 0128342)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Conductivity Temperature and Depth (CTD) measurements were collected aboard the R/V Seward Johnson, Cruise 1, Leg 2, to determine physical oceanographic parameters...

  1. Space polypropulsion

    Science.gov (United States)

    Kellett, B. J.; Griffin, D. K.; Bingham, R.; Campbell, R. N.; Forbes, A.; Michaelis, M. M.

    2008-05-01

    Hybrid space propulsion has been a feature of most space missions. Only the very early rocket propulsion experiments like the V2, employed a single form of propulsion. By the late fifties multi-staging was routine and the Space Shuttle employs three different kinds of fuel and rocket engines. During the development of chemical rockets, other forms of propulsion were being slowly tested, both theoretically and, relatively slowly, in practice. Rail and gas guns, ion engines, "slingshot" gravity assist, nuclear and solar power, tethers, solar sails have all seen some real applications. Yet the earliest type of non-chemical space propulsion to be thought of has never been attempted in space: laser and photon propulsion. The ideas of Eugen Saenger, Georgii Marx, Arthur Kantrowitz, Leik Myrabo, Claude Phipps and Robert Forward remain Earth-bound. In this paper we summarize the various forms of nonchemical propulsion and their results. We point out that missions beyond Saturn would benefit from a change of attitude to laser-propulsion as well as consideration of hybrid "polypropulsion" - which is to say using all the rocket "tools" available rather than possibly not the most appropriate. We conclude with three practical examples, two for the next decades and one for the next century; disposal of nuclear waste in space; a grand tour of the Jovian and Saturnian moons - with Huygens or Lunoxod type, landers; and eventually mankind's greatest space dream: robotic exploration of neighbouring planetary systems.

  2. Knowledge spaces

    CERN Document Server

    Doignon, Jean-Paul

    1999-01-01

    Knowledge spaces offer a rigorous mathematical foundation for various practical systems of knowledge assessment. An example is offered by the ALEKS system (Assessment and LEarning in Knowledge Spaces), a software for the assessment of mathematical knowledge. From a mathematical standpoint, knowledge spaces generalize partially ordered sets. They are investigated both from a combinatorial and a stochastic viewpoint. The results are applied to real and simulated data. The book gives a systematic presentation of research and extends the results to new situations. It is of interest to mathematically oriented readers in education, computer science and combinatorics at research and graduate levels. The text contains numerous examples and exercises and an extensive bibliography.

  3. Instrumentos para o processo de enfermagem do neonato pré-termo à luz da teoria de Dorothy Johnson

    Directory of Open Access Journals (Sweden)

    Flávia Andrade Fialho

    2014-06-01

    Full Text Available Introdução: Apesar da comprovação das inúmeras vantagens do aleitamento materno e da melhora da situação do aleitamento materno entre as crianças brasileiras, o que se percebe é que a situação no país em relação à amamentação exclusiva ainda é preocupante. O percentual de crianças no primeiro semestre de vida, alimentadas somente com o leite materno, permanece muito aquém da recomendação do Fundo das Nações Unidas para a Infância, da Organização Mundial da Saúde e do Ministério da Saúde do Brasil. Acrescenta-se ainda que o aleitamento materno depende de fatores que podem influir positiva ou negativamente no seu sucesso, de modo que tais fatores refletem num desafio aos enfermeiros. Com o conhecimento dessa realidade pretende-se atingir os seguintes objetivos: conhecer a importância do enfermeiro no estabelecimento e manutenção do aleitamento materno e discutir os fatores que desencadeiam o desmame precoce. Materiais e Métodos: Para atender aos objetivos propostos elegeu-se a revisão bibliográfica. Resultados e Discussão: A análise dos dados resultou em três categorias temáticas: a prevalência do aleitamento materno no Brasil; os fatores que levam ao desmame precoce; e a promoção do aleitamento materno pelos profissionais de saúde, em especial o enfermeiro. Conclusões: Por fim pode-se dizer que além da vontade materna e da habilidade dos profissionais de saúde em promover o aleitamento materno, é preciso considerar que o sucesso da prática de amamentação depende também de políticas governamentais adequadas e do apoio e participação de toda sociedade.Palavras chave: Aleitamento Materno, Desmame, Enfermagem. (Fonte: DeCS BIREME.Cómo citar este artículo: Andrade Fialho F, Ávila Vargas Dias IM, Arreguy-Sena C, da Silva Alves M. Instrumentos para o processo de enfermagem do neonato pré-termo à luz da teoría de Dorothy Johnson. Rev Cuid. 2014; 5(1: 652-60.  

  4. Clinical features of Dubin-Johnson syndrome%Dubin-Johnson综合征的临床特点分析

    Institute of Scientific and Technical Information of China (English)

    姬蒙; 张金平; 李建生

    2013-01-01

    Dubin-Johnson综合征(DJS)是一种少见的常染色体隐性遗传病,是由于毛细胆管上特异性有机阴离子转运蛋白基因缺陷,导致结合胆红素排泄障碍,血液中结合胆红素升高,黑色色素在肝细胞内沉着,大体表现为黑肝.该疾病预后良好,不需特殊治疗,但容易被误诊导致患者反复就诊治疗,承担不必要的精神和经济负担.近年来有报道本病可合并多种疾病,诊断较困难,从而对持续性黄疸难以解释,并且患者可在中老年时期就诊,而不是在青少年好发时期,容易遗漏该疾病导致误诊.本文对DJS的发病机制、临床特点及近年来的诊断方法等作一综述.%Dubin - Johnson syndrome ( DJS) is a rare autosomal recessive disease caused by deficiency of the canalicular multi - specific organic anionic transporter (CMOAT) protein. The consequent impairment of conjugated bilirubin secretion into the bile results in hyperbiliru-binemia, and the manifestation is black pigment depositing in liver (ells under microscope and black liver from macroscopy. However, DJS appears to be a benign disease and no specific treatment has been developed. Misdiagnosis of DJS is common and patients frequently experience repeated visits to physicians during which they undergo a batten of unnecessary clinical testing. This situation may be further complicated by concomitant diseases, which are only recently being recognized and may be the primary etiology or a promoting factor for the patient' s prolonged jaundice. Moreover, the patients who tend to present to clinic during middle and old age which is the rare morbidity age can be easily misdiagnosed. As the disease can be easily ignored. In this review, we summarize the known information regarding DJS pathogenesis, clinical characteristics, and diagnostic methods in order to improve physicians' awareness of the disease.

  5. Síndrome de Stevens-Johnson: repercussões oculares e possíveis tratamentos

    Directory of Open Access Journals (Sweden)

    José Victor de Miranda Pedroso

    2016-10-01

    Full Text Available Introdução: A síndrome de Stevens-Johnson (SSJ caracteriza-se por um  processo imunológico que provoca lesões mucocutâneas inflamatórias que progridem para necrose, acometendo principalmente a face e o tronco e pode ocorrer por uma reação de hipersensibilidade tardia a medicamentos. Objetivos: relatar o caso de um paciente portador da SSJ que faz acompanhamento oftalmológico devido a defeito epitelial persistente do olho esquerdo. Metodologia: O caso foi acompanhado no serviço de Oftalmologia do Hospital Oftalmológico de Sorocaba (BOS e sua descrição embasada na literatura. Relato de Caso: Paciente do sexo masculino, 20 anos, procurou atendimento oftalmológico devido à baixa de acuidade visual (BAV de olho esquerdo (OE há 40 dias. Relatou histórico de SSJ há 4 anos atribuído ao uso de fenobarbital, com acometimento principalmente da face, resultando em perda total da visão do olho direito (OD. Ao exame biomiscroscópico de OE, observou-se simbléfaro, edema corneano e erosão epitelial corneana. Optou-se por encaminhar o paciente para seguimento no ambulatório de córnea, onde foi indicada realização de patch de córnea. Em sua evolução desfavorável, paciente passou pelos procedimentos de tarsorrafia temporal e nasal e atualmente aguarda cirurgia para implante de ceratoprótese. Conclusão: O caso apresentado reforça a hipótese de que a SSJ é uma reação imunológica desencadeada por medicamentos. O tratamento completo das repercussões oculares dessa síndrome ainda é difícil, o que corrobora com a necessidade de um diagnóstico precoce, encaminhamento para unidade de terapia intensiva ou de queimados e o acompanhamento por oftalmologista.

  6. 盐酸头孢替安致Stevens-Johnson综合征%Stevens-Johnson syndrome caused by cefotiam hydrochloride

    Institute of Scientific and Technical Information of China (English)

    朱忠华; 朱辉娅; 凌云

    2013-01-01

    1例61岁女性患者因慢性胆囊炎急性发作给予盐酸头孢替安2 g+0.9%氯化钠注射液100 ml,2次/d静脉滴注;泮托拉唑60 mg +0.9%氯化钠注射液100 ml,2次/d静脉滴注.第2天,患者体温升高,面部及四肢出现红斑样皮疹伴瘙痒.停用盐酸头孢替安,静脉注射地塞米松、肌内注射异丙嗪,无明显好转.第3天皮疹波及全身,伴喉头不适、颜面红肿、眼睑水肿、结膜充血.诊断为Stevens-Johnson综合征,停用泮托拉唑,继续行糖皮质激素和抗组胺治疗.第5天,眼睑水肿减轻.第6天,四肢皮疹明显减轻,颜面红肿消退.第9天,患者全身皮疹基本消退.%A 61-year-old woman with acute episodes of chronic cholecystitis received an Ⅳ infusion of cefotiam hydrochloride 2.0 g in 0.9% sodium chloride injection 100 ml twice daily,and an Ⅳ infusion of pantoprazole 60 mg in 0.9% sodium chloride injection 100 nl twice daily.On day 2,the patient's body temperature rose,erythematous skin rashes appeared on her face and extremities,accompanied by itching.Cefotiam hydrochloride was stopped.She was treated with Ⅳ dexamethasone and IM promethazine.The above symptoms did not markedly improve.On day 3,skin rashes spread over her entire body,accompanied by throat discomfort,facial swelling,palpebral edema,and conjunctival congestion.Stevens-Johnson syndrome was diagnosed.Pantoprazole was stopped,glucocorticoid and antihistamine treatment was continued.On day 5,palpebral edema was relieved.On day 6,rashes on her limbs was significantly improved and facial swelling disappeared.On day 9,her generalized rashes basically subsided.

  7. Correlation between drug–drug interaction-induced Stevens–Johnson syndrome and related deaths in Taiwan

    Directory of Open Access Journals (Sweden)

    Fu-Jen Cheng

    2016-04-01

    Full Text Available Concomitant use of some drugs can lead to interactions between them resulting in severe adverse effects. To date, there are few reports of incidences of Stevens-Johnson syndrome (SJS associated with combination drug administration. Therefore, we studied the relationship between drug combinations and SJS-related mortality, with the hope that a retrospective study of this nature would provide information crucial for the prevention of future drug-drug interaction related deaths attributable to SJS. This retrospective longitudinal study used mortality cases from 1999 to 2008 that were diagnosed as erythema multiforme (International Classification of Diseases, Ninth Revision, Clinical Modification 695.1 from the National Health Insurance database in Taiwan. Statistical comparisons of the results were performed using analysis of variance (ANOVA, independent sample t-tests, and odds ratio (OR. In this way, the relationship between combinations of SJS-inducing drugs and mortality could be determined. A total of 111 patients who had died, including 63 males and 48 females (66.0 ± 20 and 70.0 ± 17.7 years, respectively, were suspected of having experienced drug-drug interaction-related adverse effects. The associated drug combinations included allopurinol and ampicillin (p = 0.049, carbamazepine and sulfamethoxazole/trimethoprim (TMP (p < 0.0001, carbamazepine and phenytoin (p < 0.0001, sulfamethoxazole/TMP and phenytoin (p = 0.015, sulfadoxine and piroxicam (p = 0.045, phenobarbital and cephalexin (p < 0.0001, ampicillin and erythromycin (p < 0.0001, erythromycin and minocycline (p < 0.0001, and vancomycin and ethambutol (p < 0.0001 administered 1 month before the patients' deaths. Caution should be exercised when administering any drugs that may possibly induce SJS. In addition, attention should be paid to ensure prompt identification of possible drug-drug interactions, and patients should be closely monitored. Furthermore

  8. Analysis and Assessment of Peak Lightning Current Probabilities at the NASA Kennedy Space Center

    Science.gov (United States)

    Johnson, D. L.; Vaughan, W. W.

    1999-01-01

    This technical memorandum presents a summary by the Electromagnetics and Aerospace Environments Branch at the Marshall Space Flight Center of lightning characteristics and lightning criteria for the protection of aerospace vehicles. Probability estimates are included for certain lightning strikes (peak currents of 200, 100, and 50 kA) applicable to the National Aeronautics and Space Administration Space Shuttle at the Kennedy Space Center, Florida, during rollout, on-pad, and boost/launch phases. Results of an extensive literature search to compile information on this subject are presented in order to answer key questions posed by the Space Shuttle Program Office at the Johnson Space Center concerning peak lightning current probabilities if a vehicle is hit by a lightning cloud-to-ground stroke. Vehicle-triggered lightning probability estimates for the aforementioned peak currents are still being worked. Section 4.5, however, does provide some insight on estimating these same peaks.

  9. Space exploration

    National Research Council Canada - National Science Library

    Chris Moore

    2012-01-01

      Here, Moore presents a year in review on space exploration programs. This 2012 NASA's strategy of stimulating the development of commercial capabilities to launch crew and cargo to the ISS began to pay off...

  10. Target Space $\

    CERN Document Server

    Huggett, Nick

    2015-01-01

    This paper investigates the significance of T-duality in string theory: the indistinguishability with respect to all observables, of models attributing radically different radii to space -- larger than the observable universe, or far smaller than the Planck length, say. Two interpretational branch points are identified and discussed. First, whether duals are physically equivalent or not: by considering a duality of the familiar simple harmonic oscillator, I argue that they are. Unlike the oscillator, there are no measurements 'outside' string theory that could distinguish the duals. Second, whether duals agree or disagree on the radius of 'target space', the space in which strings evolve according to string theory. I argue for the latter position, because the alternative leaves it unknown what the radius is. Since duals are physically equivalent yet disagree on the radius of target space, it follows that the radius is indeterminate between them. Using an analysis of Brandenberger and Vafa (1989), I explain wh...

  11. Riesz spaces

    CERN Document Server

    Zaanen, A C

    1983-01-01

    While Volume I (by W.A.J. Luxemburg and A.C. Zaanen, NHML Volume 1, 1971) is devoted to the algebraic aspects of the theory, this volume emphasizes the analytical theory of Riesz spaces and operators between these spaces. Though the numbering of chapters continues on from the first volume, this does not imply that everything covered in Volume I is required for this volume, however the two volumes are to some extent complementary.

  12. Estudo dos achados oculares na síndrome de Stevens-Johnson em pacientes de centro de referência de atendimento terciário Study of the ocular findings in Stevens-Johnson syndrome patients from a tertiary ophthalmologic center

    Directory of Open Access Journals (Sweden)

    Marciel Dourado Franca

    2009-06-01

    Full Text Available OBJETIVO: Avaliar a epidemiologia, os possíveis fatores desencadeantes, complicações encontradas e as variedades de tratamentos administrados a um grupo de pacientes com complicações oculares secundárias à síndrome de Stevens-Johnson. MÉTODOS: Realizado estudo prospectivo, série de casos com 22 pacientes portadores de síndrome de Stevens-Johnson. Os pacientes foram estudados seguindo um protocolo com o objetivo de se buscar uma história detalhada sobre a doença, suas manifestações sistêmicas e oftalmológicas, bem como o tratamento realizado, dando ênfase aos possíveis fatores desencadeantes. RESULTADOS: Foram avaliados 22 pacientes com síndrome de Stevens-Johnson. Quinze pacientes (68% eram do sexo feminino e 7 (32% do sexo masculino. Dez pacientes eram brancos (45,4%, 9 pardos (22%, 2 negros (9% e 1 amarelo (4,5%. A média de idade foi de 27,1 anos (variação entre 8 e 62 anos. A associação com drogas foi o principal fator etiológico. Em 20 pacientes (90,9% o desenvolvimento da doença esteve associado ao uso de medicações, 1 (4,5% por infecção herpética cutânea e 1 (4,5% idiopático. A dipirona (36,3% foi o agente mais associado à síndrome de Stevens-Johnson seguido por anticonvulsivantes (22,7%, anti-inflamatórios não hormonais (13,6%, sulfonamidas (9,0%, penicilinas (4,5%, espironolactona (4,5% e anticoncepcional injetável (dihidroprogesterona e estradiol (4,5%. Vinte e um pacientes (95,4% desenvolveram complicações oculares e 16 pacientes (72,7% foram submetidos a procedimentos cirúrgicos oftalmológicos. CONCLUSÃO: Os resultados observados neste estudo mostram aspectos epidemiológicos importantes da síndrome de Stevens-Johnson em nosso meio, principalmente em relação à idade, etiologia e complicações.PURPOSE: To evaluate the epidemiology, possible etiologic factors, complications and treatment of a group of patients with ocular complications secondary to Stevens-Johnson syndrome. METHODS

  13. Avionics Systems Laboratory/Building 16. Historical Documentation

    Science.gov (United States)

    Slovinac, Patricia; Deming, Joan

    2011-01-01

    As part of this nation-wide study, in September 2006, historical survey and evaluation of NASA-owned and managed facilities that was conducted by NASA s Lyndon B. Johnson Space Center (JSC) in Houston, Texas. The results of this study are presented in a report entitled, "Survey and Evaluation of NASA-owned Historic Facilities and Properties in the Context of the U.S. Space Shuttle Program, Lyndon B. Johnson Space Center, Houston, Texas," prepared in November 2007 by NASA JSC s contractor, Archaeological Consultants, Inc. As a result of this survey, the Avionics Systems Laboratory (Building 16) was determined eligible for listing in the NRHP, with concurrence by the Texas State Historic Preservation Officer (SHPO). The survey concluded that Building 5 is eligible for the NRHP under Criteria A and C in the context of the U.S. Space Shuttle program (1969-2010). Because it has achieved significance within the past 50 years, Criteria Consideration G applies. At the time of this documentation, Building 16 was still used to support the SSP as an engineering research facility, which is also sometimes used for astronaut training. This documentation package precedes any undertaking as defined by Section 106 of the NHPA, as amended, and implemented in 36 CFR Part 800, as NASA JSC has decided to proactively pursue efforts to mitigate the potential adverse affects of any future modifications to the facility. It includes a historical summary of the Space Shuttle program; the history of JSC in relation to the SSP; a narrative of the history of Building 16 and how it supported the SSP; and a physical description of the structure. In addition, photographs documenting the construction and historical use of Building 16 in support of the SSP, as well as photographs of the facility documenting the existing conditions, special technological features, and engineering details, are included. A contact sheet printed on archival paper, and an electronic copy of the work product on CD, are

  14. Communications and Tracking Development Laboratory/Building 44. Historical Documentation

    Science.gov (United States)

    Slovinac, Patricia

    2011-01-01

    As part of this nation-wide study, in September 2006, historical survey and evaluation of NASA-owned and managed facilities was conducted by NASA's Lyndon B. Johnson Space Center (JSC) in Houston, Texas. The results of this study are presented in a report entitled, Survey and Evaluation of NASA-owned Historic Facilities and Properties in the Context of the U.S. Space Shuttle Program, Lyndon B. Johnson Space Center, Houston, Texas, prepared in November 2007 by NASA JSC s contractor, Archaeological Consultants, Inc. As a result of this survey, the Communications and Tracking Development Laboratory (Building 44) was determined eligible for listing in the NRHP, with concurrence by the Texas State Historic Preservation Officer (SHPO). The survey concluded that Building 44 is eligible for the NRHP under Criteria A and C in the context of the U.S. Space Shuttle Program (1969-2010). Because it has achieved significance within the past 50 years, Criteria Consideration G applies. At the time of this documentation, Building 44 was still used to support the SSP as an engineering research facility, which is also sometimes used for astronaut training. This documentation package precedes any undertaking as defined by Section 106 of the NHPA, as amended, and implemented by 36 CFR Part 800, as NASA JSC has decided to proactively pursue efforts to mitigate the potential adverse affects of any future modifications to the facility. It includes a historical summary of the Space Shuttle Program; the history of JSC in relation to the SSP; a narrative of the history of Building 44 and how it supported the SSP; and a physical description of the building. In addition, photographs documenting the construction and historical use of Building 44 in support of the SSP, as well as photographs of the facility documenting the existing conditions, special technological features, and engineering details, are included. A contact sheet printed on archival paper, and an electronic copy of the work

  15. STS flight operations - Concept versus reality

    Science.gov (United States)

    Kranz, E. F.

    1985-01-01

    The NASA Lyndon B. Johnson Space Center Mission Operations Directorate (MOD) has the responsibility for planning, training, and implementing of flight operations in support of the National Space Transportation System (STS) Program. In this role, MOD has responsibility for the operational interface with customers and the translation of customer requirements into operating plans to satisfy their objectives. The basic objectives of flight operations are to maximize mission success, to minimize risks to the Orbiter and the crew, to decrease operating costs, and to achieve an effective balance in the application of all operational resources. In the National STS Program, to date, 20 missions have been flown and the process for planning, training, and flight operations has been thoroughly exercised. In this paper, MOD's performance is assessed, and those areas in which our initial operating concepts have been successful as well as those in which significant additional work is required are identified.

  16. public spaces

    Directory of Open Access Journals (Sweden)

    Elena Grigoryeva

    2013-01-01

    Full Text Available The topic of this issue is PUBLIC SPACES. It is familiar and clear to every citizen. The streets and courtyards as childhood experiences remain with us forever. And these are the places where we come with our parents at weekends, where we meet friends, where we have dates and where we already come for a walk with our children.The history of public spaces is long and captivating. It was the main city squares where the most important events took place in history. The Agoras of Ancient Greece and the Roman Forums, the squares of Vatican, Paris and London, Moscow and Saint Petersburg… Greve, Trafalgar, Senate, Palace, Red, Bolotnaya – behind every name there is life of capitals, countries and nations.Public spaces, their shapes, image and development greatly influence the perception of the city as a whole. Both visitors and inhabitants can see in public spaces not only the visage but the heart, the soul and the mind of the city.Unfortunately, sometimes we have to prove the value of public spaces and defend them from those who consider them nothing but a blank space, nobody’s land destined for barbarous development.What should happen to make citizens perceive public spaces as their own and to make authorities consider development and maintenance of squares and parks their priority task against the  background of increasing competition between cities and the fight for human capital? Lately they more often say about “a high-quality human capital”. And now, when they say “the city should be liveable” they add “for all groups of citizens, including the creative class”.

  17. Bounds on Subspace Codes Based on Subspaces of Type (m,1 in Singular Linear Space

    Directory of Open Access Journals (Sweden)

    You Gao

    2014-01-01

    Full Text Available The Sphere-packing bound, Singleton bound, Wang-Xing-Safavi-Naini bound, Johnson bound, and Gilbert-Varshamov bound on the subspace codes n+l,M,d,(m,1q based on subspaces of type (m,1 in singular linear space Fq(n+l over finite fields Fq are presented. Then, we prove that codes based on subspaces of type (m,1 in singular linear space attain the Wang-Xing-Safavi-Naini bound if and only if they are certain Steiner structures in Fq(n+l.

  18. Underground spaces/cybernetic spaces

    Directory of Open Access Journals (Sweden)

    Tomaž Novljan

    2000-01-01

    Full Text Available A modern city space is a space where in the vertical and horizontal direction dynamic, non-linear processes exist, similar as in nature. Alongside the “common” city surface, cities have underground spaces as well that are increasingly affecting the functioning of the former. It is the space of material and cybernetic communication/transport. The psychophysical specifics of using underground places have an important role in their conceptualisation. The most evident facts being their limited volume and often limited connections to the surface and increased level of potential dangers of all kinds. An efficient mode for alleviating the effects of these specific features are artistic interventions, such as: shape, colour, lighting, all applications of the basic principles of fractal theory.

  19. Effects of urbanization, construction activity, management practices, and impoundments on suspended-sediment transport in Johnson County, northeast Kansas, February 2006 through November 2008

    Science.gov (United States)

    Lee, Casey J.; Ziegler, Andrew C.

    2010-01-01

    The U.S. Geological Survey, in cooperation with the Johnson County, Kansas, Stormwater Management Program, investigated the effects of urbanization, construction activity, management practices, and impoundments on suspended-sediment transport in Johnson County from February 2006 through November 2008. Streamgages and continuous turbidity sensors were operated at 15 sites within the urbanizing 57-square-mile Mill Creek Basin, and 4 sites downstream from the other largest basins (49 to 66 square miles) in Johnson County. The largest sediment yields in Johnson County were observed downstream from basins with increased construction activity. Sediment yields attributed to the largest (68 acre) active construction site in the study area were 9,300 tons per square mile in 2007 and 12,200 tons per square mile in 2008; 5 to 55 times larger than yields observed at other sampling sites. However, given erodible soils and steep slopes at this site, sediment yields were relatively small compared to the range in historic values from construction sites without erosion and sediment controls in the United States (2,300 to 140,000 tons per square mile). Downstream from this construction site, a sediment forebay and wetland were constructed in series upstream from Shawnee Mission Lake, a 120-acre reservoir within Shawnee Mission Park. Although the original intent of the sediment forebay and constructed wetland were unrelated to upstream construction, they were nonetheless evaluated in 2008 to characterize sediment removal before stream entry into the lake. The sediment forebay was estimated to reduce 33 percent of sediment transported to the lake, whereas the wetland did not appear to decrease downstream sediment transport. Comparisons of time-series data and relations between turbidity and sediment concentration indicate that larger silt-sized particles were deposited within the sediment forebay, whereas smaller silt and clay-sized sediments were transported through the wetland and

  20. Transfer of Pseudomonas flectens Johnson 1956 to Phaseolibacter gen. nov., in the family Enterobacteriaceae, as Phaseolibacter flectens gen. nov., comb. nov.

    Science.gov (United States)

    Halpern, Malka; Fridman, Svetlana; Aizenberg-Gershtein, Yana; Izhaki, Ido

    2013-01-01

    Pseudomonas flectens Johnson 1956, a plant-pathogenic bacterium on the pods of the French bean, is no longer considered to be a member of the genus Pseudomonas sensu stricto. A polyphasic approach that included examination of phenotypic properties and phylogenetic analyses based on 16S rRNA, rpoB and atpD gene sequences supported the transfer of Pseudomonas flectens Johnson 1956 to a new genus in the family Enterobacteriaceae as Phaseolibacter flectens gen. nov., comb. nov. Two strains of Phaseolibacter flectens were studied (ATCC 12775(T) and LMG 2186); the strains shared 99.8 % sequence similarity in their 16S rRNA genes and the housekeeping gene sequences were identical. Strains of Phaseolibacter flectens shared 96.6 % or less 16S rRNA gene sequence similarity with members of different genera in the family Enterobacteriaceae and only 84.7 % sequence similarity with Pseudomonas aeruginosa LMG 1242(T), demonstrating that they are not related to the genus Pseudomonas. As Phaseolibacter flectens formed an independent phyletic lineage in all of the phylogenetic analyses, it could not be affiliated to any of the recognized genera within the family Enterobacteriaceae and therefore was assigned to a new genus. Cells were Gram-negative, straight rods, motile by means of one or two polar flagella, fermentative, facultative anaerobes, oxidase-negative and catalase-positive. Growth occurred in the presence of 0-60 % sucrose. The DNA G+C content of the type strain was 44.3 mol%. On the basis of phenotypic properties and phylogenetic distinctiveness, Pseudomonas flectens Johnson 1956 is transferred to the novel genus Phaseolibacter gen. nov. as Phaseolibacter flectens gen. nov., comb. nov. The type strain of Phaseolibacter flectens is ATCC 12775(T) = CFBP 3281(T) = ICMP 745(T) = LMG 2187(T) = NCPPB 539(T).