WorldWideScience

Sample records for top-ranked breakthrough foreseen

  1. Qualitative research publication rates in top-ranked nursing journals: 2002-2011.

    Science.gov (United States)

    Gagliardi, Anna R; Umoquit, Muriah; Webster, Fiona; Dobrow, Mark

    2014-01-01

    Journal publication is the traditional means of disseminating research. Few top-ranked general medical and health services and policy research journals publish qualitative research. This study examined qualitative research publication rates in top-ranked nursing journals with varying characteristics (general vs. specialty focus, number of issues per year) and compared publication rates with those previously reported for journals in related fields. A bibliometric approach was used to identify and quantify qualitative articles published in 10 top-ranked nursing journals from 2002 to 2011. The percentage of qualitative empirical studies varied within and across nursing journals with no apparent association with journal characteristics. Although variable, qualitative research appears more common in high-ranking nursing journals than in general medical and health services and policy research journals. Examining factors that contribute to inconsistent rates may identify strategies to optimize qualitative research reporting and publication.

  2. Faculty Hiring at Top-Ranked Higher Education Administration Programs: An Examination Using Social Network Analysis

    Science.gov (United States)

    DiRamio, David; Theroux, Ryan; Guarino, Anthony J.

    2009-01-01

    Using network analysis we investigated faculty hiring at 21 U. S. News top-ranked programs in higher education administration. Our research questions were as follows. Do top programs hire from each other? Are faculty from the "outside" finding positions at top programs? Mixed results hint at implications for the "health" of the hiring network.…

  3. Research Productivity in Top-Ranked Schools in Psychology and Social Work: Research Cultures Do Matter!

    Science.gov (United States)

    Holosko, Michael J.; Barner, John R.

    2016-01-01

    Objectives: We sought the answer to one major research question--Does psychology have a more defined culture of research than social work? Methods: Using "U.S. News and World Report" 2012 and 2013 rankings, we compared psychology faculty (N = 969) from their 25 top ranked programs with a controlled sample of social work faculty (N = 970)…

  4. Academic elite in accounting: linkages among top-ranked graduate programs.

    Science.gov (United States)

    Bair, Jeffrey H

    2002-06-01

    The 10 top-ranked graduate programs in accounting, based on a national survey of deans and top administrators, were linked to one another by hiring in the programs one another's graduates. Almost one-half (45.9%) of the faculty members in these 10 programs (N = 172) had graduated from one of these 10 programs. It is suggested that this linkage helps these programs to maintain and enhance their prestige.

  5. Behavior change techniques in top-ranked mobile apps for physical activity.

    Science.gov (United States)

    Conroy, David E; Yang, Chih-Hsiang; Maher, Jaclyn P

    2014-06-01

    Mobile applications (apps) have potential for helping people increase their physical activity, but little is known about the behavior change techniques marketed in these apps. The aim of this study was to characterize the behavior change techniques represented in online descriptions of top-ranked apps for physical activity. Top-ranked apps (n=167) were identified on August 28, 2013, and coded using the Coventry, Aberdeen and London-Revised (CALO-RE) taxonomy of behavior change techniques during the following month. Analyses were conducted during 2013. Most descriptions of apps incorporated fewer than four behavior change techniques. The most common techniques involved providing instruction on how to perform exercises, modeling how to perform exercises, providing feedback on performance, goal-setting for physical activity, and planning social support/change. A latent class analysis revealed the existence of two types of apps, educational and motivational, based on their configurations of behavior change techniques. Behavior change techniques are not widely marketed in contemporary physical activity apps. Based on the available descriptions and functions of the observed techniques in contemporary health behavior theories, people may need multiple apps to initiate and maintain behavior change. This audit provides a starting point for scientists, developers, clinicians, and consumers to evaluate and enhance apps in this market. Copyright © 2014 American Journal of Preventive Medicine. Published by Elsevier Inc. All rights reserved.

  6. Environmental management of asthma at top-ranked U.S. managed care organizations.

    Science.gov (United States)

    Brugge, Doug; Bagley, Janelle; Hyde, James

    2003-09-01

    We evaluated the status of nationally top-ranked managed care organizations' (MCOs) asthma disease management programs to identify "best practices" in the environmental treatment and control of asthma. Application materials were developed and mailed to the top 34 managed care organizations, as determined by the ranked results from the October 1998 edition of US News and World Report. Based on the results of a staff and panel review, five applicants were selected for site visitation. The results of the site visits determined two finalists and three runners-up. We recommend that MCOs integrate population and community-based strategies and seek an emphasis on prevention. We encourage collaborations with other organizations and agencies. We endorse home visitation to assess environmental factors and also support use of telephonic case management. We think that smoking cessation programs should be coordinated with asthma management. We consider it important to use alternative forms of communication such as the Internet. And we find that it is important to be mindful of language, culture, and literacy.

  7. Scientific output quality of 40 globally top-ranked medical researchers in the field of osteoporosis.

    Science.gov (United States)

    Pluskiewicz, W; Drozdzowska, B; Adamczyk, P; Noga, K

    2018-03-26

    The study presents the research output of 40 globally top-ranked authors, publishing in the field of osteoporosis. Their h-index is compared with the Scientific Quality Index (SQI), a novel indicator. Using SQI, 92.5% of the authors changed their initial positions in the general ranking. SQI partially depends on bibliometric measures different from those influencing h-index and may be considered as an assessment tool, reflecting more objective, qualitative, rather than quantitative, features of individual scientific output. The study approaches the research output of 40 globally top-ranked authors in the field of osteoporosis. The assessed authors were identified in the Scopus database, using the key word "osteoporosis" and the h-index data, collected during the last decade (2008-2017). The data, concerning the scientific output, expressed by the h-index, were compared with a novel indicator of scientific quality-called the Scientific Quality Index (SQI). SQI is calculated according to the following formula: Parameter No. 1 + Parameter No. 2, where: Parameter No. 1 (the percent of papers cited ≥ 10 times) the number of papers cited ≥ 10 times (excluding self-citations and citations of all co-authors) is divided by the number of all the published papers (including the papers with no citation) × 100%, Parameter No. 2 (the mean number of citations per paper) the total number of citations (excluding self-citations and citations of all co-authors) divided by the number of all published papers (including papers with no citation). The following research output values were obtained: the citation index, 2483.6 ± 1348.7; the total number of papers, 75.1 ± 23.2; the total number of cited papers, 69.3 ± 22.0; the number of papers cited, at least, 10 times, 45.4 ± 17.2; the percent of papers cited, at least, 10 times, 59.9 ± 10.0; and the mean citations per paper, 32.8 ± 15.0. The mean value of Hirsch index was 24.2 ± 6.2 and SQI

  8. CONSORT item adherence in top ranked anaesthesiology journals in 2011: a retrospective analysis.

    Science.gov (United States)

    Münter, Nils H; Stevanovic, Ana; Rossaint, Rolf; Stoppe, Christian; Sanders, Robert D; Coburn, Mark

    2015-02-01

    Randomised controlled trials (RCTs) are the gold standard for measuring the efficacy of any medical intervention. The present study assesses the implementation of the CONSORT statement in the top 11 anaesthesiology journals in 2011. We designed this study in order to determine how well authors in the top 11 ranked anaesthesiology journals follow the CONSORT statement's criteria. A retrospective cross-sectional data analysis. The study was performed at the RWTH Aachen University Hospital. Journals included Pain, Anesthesiology, British Journal of Anaesthesia, Regional Anesthesia and Pain Medicine, European Journal of Pain, Anesthesia and Analgesia, Anaesthesia, Minerva Anestesiologica, Canadian Journal of Anesthesia, Journal of Neurosurgical Anesthesiology and the European Journal of Anaesthesiology. All articles in the online table of contents from the top 11 anaesthesiology journals according to the ISI Web of Knowledge were screened for RCTs published in 2011. The RCTs were assessed using the CONSORT checklist. We also analysed the correlation between the number of citations and the adherence to CONSORT items. We evaluated 319 RCTs and found that, more than ten years after the publication of the CONSORT statement, the RCTs satisfied a median of 60.0% of the CONSORT criteria. Only 72.1% of the articles presented clearly defined primary and secondary outcome parameters. The number of citations is only weakly associated with the fulfilment of the CONSORT statement (r = 0.023). Adherence to the CONSORT criteria remains low in top-ranked anaesthesiology journals. We found only a very weak correlation between the number of citations and fulfilment of the requirements of the CONSORT statement.

  9. Scientific publications in ophthalmic journals from China and other top-ranking countries: a 12-year review of the literature.

    Science.gov (United States)

    Huang, Wenbin; Wang, Wei; Zhan, Jiao; Zhou, Minwen; Chen, Shida; Zhang, Xiulan

    2013-06-26

    Eye diseases with increasing mortality are common health problems that affect people of all ages and demographic backgrounds. In this study, we study the publication characteristics in international ophthalmic journals of the US, the UK, Germany, Australia, Japan, and China. Articles published in 53 ophthalmic journals from 2000 to 2011 were retrieved from the PubMed database. We recorded the number of articles published each year, analyzed the publication type, and evaluated the accumulated and average impact factors (IFs), and the distribution of articles in ophthalmic journals in relation to IFs. The characteristics of publication outputs from China and other top-ranking countries were compared. The total number of articles increased significantly during the past 12 years, with an increase of 51.0%. The growth in the annual number of articles from the US, the UK, Australia, and China showed a significantly positive trend. Publications from the US exceeded those from any other country and had the highest IFs, largest number of total citations of articles, and the most articles published in leading ophthalmic journals. During the past 12 years, China contributed 3.5% of the total publications, and the number of Chinese articles showed a more than 6-fold increase (from 99 to 605, R2 =0.947, P<0.001). The numbers of IFs and citations of articles originating in China were mostly lower than for other top-ranking counties. Research on ophthalmic journals has maintained an upward growing trend from 2000 to 2011. Chinese ophthalmology research has developed rapidly, but the gap still exists between China and other top-ranking countries for the advanced level of research.

  10. Pathological research output in China and other top-ranking countries: 10-year survey of the literature.

    Science.gov (United States)

    Li, Zhongwu; Wan, Xiaohua; Lu, Aiping; Li, Xianghong; Li, Jiyou

    2010-12-15

    The present study was designed to study the research output in pathology journals from the United States (USA), Japan, Germany, the United Kingdom (UK), France, and China between 2000 and 2009. Articles published in 67 pathology-related journals were retrieved from the PubMed database. US-American publications, which rank first, accounted for 30.9% of the total world's output and for 35.4% in the top 10% journals with impact factor (IF) scores. Chinese publications accounted for 2.8% of a total of 67 journals, and for 2.0% in the top 10% journals with IF scores. Our analysis investigated the research output of these six countries and revealed a positive trend in China for the period 2000-2009. Also, in contrast to other top-ranking countries, our results imply that China's research in the field of pathology falls behind that of the developed countries, and appropriate steps should be taken to improve the role of pathologists in clinical activity and to gear up for high-quality pathological studies. Copyright © 2010 Elsevier GmbH. All rights reserved.

  11. Effects of weather anomalies on the intellectual performance: Chess mistakes of the world top-ranked players

    Science.gov (United States)

    Mika, J.; Verőci, Zs.; Fülöp, A.; Hirsch, T.; Dúll, A.

    2009-04-01

    Weather disturbances like fronts, influence human biorhythm, our biological balance becomes manipulated, and adaptation mechanisms are impaired. Our working hypothesis is that even the best chess players of the world are not exceptions from this rule. As their movements on the chess board, as well as the best possible ones, if they missed to make, are already assessed by computers objectively, we can use this game as a model of intellectual performance. By the date of the Abstract edition, 580 wrong chess moves were selected with the threshold of over 1/3 peasant to be lost. I.e. this is the minimum difference between the assessment of the positions after the best possible and the really performed move. (Obviously, all moves both sides in ca. the same number of games were checked, i.e. over 35,000 moves were assessed.) For assessing the moves, the most popular database is MegaDatabase 2006 (ChessBase- Hamburg), Chess Informant Expert from Chess Informant Beograd and the program ChessBase 9.0 together with the engines Fritz 10, Rybka 2.3, Junior 10. First of all the World Chess Champions, Karpov, Kasparov, Kramnik and Anand were examined played in the traditional big chess tournaments, category 19th and more (average rating more the 2701 Elo-points). We further selected the games by the top-ranked players of the world between 2005 and 2008. This selection is explained by the likely fact that they make the less wrong moves for simply the lack of chess understanding, moreover, as full professionals, they allow the minimum of non-weather disturbing circumstances (e.g. imperfect sleeping before the game, etc.). Their moves were selected as (i) very wrong move with more than 3.0 differences, (i.e. unforced loss of a knight, or a bishop, (ii) very weak move with an assessment of 1.0-3.0, (i.e. unforced loss between one peasant and one bishop/knight) and (iii) weak move with less than 1.0 assessment of the passed chance, or unforced loss of less than one peasant. These new

  12. Identification of Top-ranked Proteins within a Directional Protein Interaction Network using the PageRank Algorithm: Applications in Humans and Plants.

    Science.gov (United States)

    Li, Xiu-Qing; Xing, Tim; Du, Donglei

    2016-01-01

    Somatic mutation of signal transduction genes or key nodes of the cellular protein network can cause severe diseases in humans but can sometimes genetically improve plants, likely because growth is determinate in animals but indeterminate in plants. This article reviews protein networks; human protein ranking; the mitogen-activated protein kinase (MAPK) and insulin (phospho- inositide 3kinase [PI3K]/phosphatase and tensin homolog [PTEN]/protein kinase B [AKT]) signaling pathways; human diseases caused by somatic mutations to the PI3K/PTEN/ AKT pathway; use of the MAPK pathway in plant molecular breeding; and protein domain evolution. Casitas B-lineage lymphoma (CBL), PTEN, MAPK1 and PIK3CA are among PIK3CA the top-ranked proteins in directional rankings. Eight proteins (ACVR1, CDC42, RAC1, RAF1, RHOA, TGFBR1, TRAF2, and TRAF6) are ranked in the top 50 key players in both signal emission and signal reception and in interaction with many other proteins. Top-ranked proteins likely have major impacts on the network function. Such proteins are targets for drug discovery, because their mutations are implicated in various cancers and overgrowth syndromes. Appropriately managing food intake may help reduce the growth of tumors or malformation of tissues. The role of the protein kinase C/ fatty acid synthase pathway in fat deposition in PTEN/PI3K patients should be investigated. Both the MAPK and insulin signaling pathways exist in plants, and MAPK pathway engineering can improve plant tolerance to biotic and abiotic stresses such as salinity.

  13. Breakthrough cancer pain

    DEFF Research Database (Denmark)

    Davies, Andrew; Buchanan, Alison; Zeppetella, Giovambattista

    2013-01-01

    Breakthrough pain is common in patients with cancer and is a significant cause of morbidity in this group of patients.......Breakthrough pain is common in patients with cancer and is a significant cause of morbidity in this group of patients....

  14. Contributions in biochemistry and molecular biology from China and other top-ranking countries: a 10-year survey of the literature.

    Science.gov (United States)

    Wan, Xiaohua; Li, Zhongwu; Wang, Mei

    2009-01-01

    Over the past decade, research in Biochemistry and Molecular Biology has developed rapidly worldwide. The present study was designed to study the characteristics of publications in Biochemistry and Molecular Biology journals between 1999 and 2008 from the six top-ranking countries - the United States (USA), Japan, Germany, United Kingdom (UK), China and France. We also examined the research output from three different regions - Mainland China (ML), Hong Kong (HK) and Taiwan (TW). The USA contributed 34.1% of the world's total output and ranked first, but its percentage of research articles in this field went down. In total, 26,867 articles were published in journals with an impact factor (IF) <10.000, and 46.5% of these were from the USA. China contributed 4.2% of the total in 268 journals, 0.5% of which were journals with the top 10 IF. Our analysis describes the output from each country and region, and reveals the positive trend in China during the period of 1999-2008. In contrast to other countries, our results suggest that China is behind in conducting high-quality research.

  15. Distributed Services with Foreseen and Unforeseen Tasks: The Mobile Re-allocation Problem

    NARCIS (Netherlands)

    J.A. Larco Martinelli (Jose); R. Dekker (Rommert); U. Kaymak (Uzay)

    2007-01-01

    textabstractIn this paper we deal with a common problem found in the operations of security and preventive/corrective maintenance services: that of routing a number of mobile resources to serve foreseen and unforeseen tasks during a shift. We define the (Mobile Re-Allocation Problem) MRAP as the

  16. Tests and foreseen developments of fibered-OSLD gamma heating measurements in low-power reactors

    Directory of Open Access Journals (Sweden)

    Gruel A.

    2018-01-01

    The feasibility of remote measurements is achieved, whereas further developments could be conducted to improve this technique since the readout procedure still requires to withdraw the OSLD off the gamma flux (hence from the core on account of the dose rate (around a few Gy.h-1, and the readout time remains quite long for on-line applications. Several improvements are foreseen, and will be tested in the forthcoming years.

  17. Breakthroughs in statistics

    CERN Document Server

    Johnson, Norman

    This is author-approved bcc: This is the third volume of a collection of seminal papers in the statistical sciences written during the past 110 years. These papers have each had an outstanding influence on the development of statistical theory and practice over the last century. Each paper is preceded by an introduction written by an authority in the field providing background information and assessing its influence. Volume III concerntrates on articles from the 1980's while including some earlier articles not included in Volume I and II. Samuel Kotz is Professor of Statistics in the College of Business and Management at the University of Maryland. Norman L. Johnson is Professor Emeritus of Statistics at the University of North Carolina. Also available: Breakthroughs in Statistics Volume I: Foundations and Basic Theory Samuel Kotz and Norman L. Johnson, Editors 1993. 631 pp. Softcover. ISBN 0-387-94037-5 Breakthroughs in Statistics Volume II: Methodology and Distribution Samuel Kotz and Norman L. Johnson, Edi...

  18. Tests and foreseen developments of fibered-OSLD gamma heating measurements in low-power reactors

    Science.gov (United States)

    Gruel, A.; Guillou, M. Le; Blaise, P.; Destouches, C.; Magne, S.

    2018-01-01

    In this paper are presented test measurements of a fibered-OSLD system performed during a dedicated experimental phase in EOLE zero-power reactor. The measurement setup consists of an OSLD crystal connected onto the extremity of an optical fiber and a laser stimulation system, manufactured by the CEA/LIST in Saclay. The OSL sensor is remotely stimulated via an optical fiber using a diode-pumped solid-state laser. The OSL light is collected and guided back along the same fiber to a photomultiplier tube. Results obtained using this system are compared to usual gamma heating measurement protocol using OSLD pellets. The presence of induced radio-luminescence in the OSLD during the irradiation was also observed and could be used to monitor the gamma flux. The feasibility of remote measurements is achieved, whereas further developments could be conducted to improve this technique since the readout procedure still requires to withdraw the OSLD off the gamma flux (hence from the core) on account of the dose rate (around a few Gy.h-1), and the readout time remains quite long for on-line applications. Several improvements are foreseen, and will be tested in the forthcoming years.

  19. Breakthrough Propulsion Physics Research Program

    Science.gov (United States)

    Millis, Marc G.

    1996-01-01

    In 1996, a team of government, university and industry researchers proposed a program to seek the ultimate breakthroughs in space transportation: propulsion that requires no propellant mass, propulsion that can approach and, if possible, circumvent light speed, and breakthrough methods of energy production to power such devices. This Breakthrough Propulsion Physics program, managed by Lewis Research Center, is one part of a comprehensive, long range Advanced Space Transportation Plan managed by Marshall Space Flight Center. Because the breakthrough goals are beyond existing science, a main emphasis of this program is to establish metrics and ground rules to produce near-term credible progress toward these incredible possibilities. An introduction to the emerging scientific possibilities from which such solutions can be sought is also presented.

  20. NASA Breakthrough Propulsion Physics Program

    Science.gov (United States)

    Millis, Marc G.

    1998-01-01

    In 1996, NASA established the Breakthrough Propulsion Physics program to seek the ultimate breakthroughs in space transportation: propulsion that requires no propellant mass, propulsion that attains the maximum transit speeds physically possible, and breakthrough methods of energy production to power such devices. Topics of interest include experiments and theories regarding the coupling of gravity and electromagnetism, vacuum fluctuation energy, warp drives and worm-holes, and superluminal quantum effects. Because these propulsion goals are presumably far from fruition, a special emphasis is to identify affordable, near-term, and credible research that could make measurable progress toward these propulsion goals. The methods of the program and the results of the 1997 workshop are presented. This Breakthrough Propulsion Physics program, managed by Lewis Research Center, is one part of a comprehensive, long range Advanced Space Transportation Plan managed by Marshall Space Flight Center.

  1. Breakthrough Drugs and Turtle Soup

    OpenAIRE

    Chabner, Bruce A.

    2015-01-01

    The U.S. Food and Drug Administration (FDA) category of Breakthrough Therapy drugs was established in 2012, fostered by collaboration between legislators, researchers, industry representatives, and cancer research advocates. This category allows the FDA to designate certain lifesaving drugs for expedited review, and it has been successful in speeding the approval of several new drugs.

  2. Recurring Utterances - Targeting a Breakthrough

    Directory of Open Access Journals (Sweden)

    Jacqueline Stark

    2014-05-01

    The most interesting phenomenon is KB’s production of words from former sessions indicating that they are still ‘active’ and the production of completely novel incorrect words. The observable features indicate that immediate auditory processing is possible in the form of repeating target words. However, as soon as KB must retrieve information from the (semantic lexicon, even after being able to correctly ‘repeat’ the target word several times, he responds with a RU, perseveration, or paraphasia. Several of his productions can be characterized as aphasic confabulations which stem from a memory gap. Thus, although KB’s language impairment is severe, his responses across time indicate that step-by-step a breakthrough is being made.

  3. Breakthrough cancer pain – still a challenge

    Science.gov (United States)

    Margarit, Cesar; Juliá, Joaquim; López, Rafael; Anton, Antonio; Escobar, Yolanda; Casas, Ana; Cruz, Juan Jesús; Galvez, Rafael; Mañas, Ana; Zaragozá, Francisco

    2012-01-01

    Breakthrough cancer pain is defined as transient pain exacerbation in patients with stable and controlled basal pain. Although variable, the prevalence of breakthrough cancer pain is high (33%–95%). According to the American Pain Foundation, breakthrough pain is observed in 50%–90% of all hospitalized cancer patients, in 89% of all patients admitted to homes for the elderly and terminal-patient care centers, and in 35% of all ambulatory care cancer patients. The management of breakthrough cancer pain should involve an interdisciplinary and multimodal approach. The introduction of new fentanyl formulations has represented a great advance and has notably improved treatment. Among these, the pectin-based intranasal formulation adjusts very well to the profile of breakthrough pain attacks, is effective, has a good toxicity profile, and allows for convenient dosing – affording rapid and effective analgesia with the added advantage of being easily administered by caregivers when patients are unable to collaborate. PMID:23204865

  4. The Breakthrough Behind the Chevy Volt Battery

    Science.gov (United States)

    Lerner, Louise

    2011-03-28

    A revolutionary breakthrough cathode for lithium-ion batteries—the kind in your cell phone, laptop and new hybrid cars—makes them last longer, run more safely and perform better than batteries currently on the market.

  5. Researchers Realize Major Breakthrough in Understanding Endometriosis

    Science.gov (United States)

    ... 16, 2014 Researchers Realize Major Breakthrough in Understanding Endometriosis For a disease that affects an estimated 6 ... 10% of women, surprisingly little is known about endometriosis — a disorder that causes uterine tissue to grow ...

  6. Breakthrough Listen: Searching for Signatures of Technology

    Science.gov (United States)

    Isaacson, H. T.; Siemion, A. P. V.

    2017-11-01

    Breakthrough Listen is searching for signals of extra-terrestrial technologies using radio and optical telescopes. Very nearby stars of all types. Stars across the HR diagram and galaxies are all of interest in the search for techno-signatures.

  7. Innovation Impact: Breakthrough Research Results (Brochure)

    Energy Technology Data Exchange (ETDEWEB)

    2013-07-01

    The Innovation Impact brochure captures key breakthrough results across NREL's primary areas of renewable energy and energy efficiency research: solar, wind, bioenergy, transportation, buildings, analysis, and manufacturing technologies.

  8. NASA Breakthrough Propulsion Physics Workshop Proceedings

    Science.gov (United States)

    Millis, Marc G. (Editor); Williamson, Gary Scott (Editor)

    1999-01-01

    In August 1997, NASA sponsored a 3-day workshop to assess the prospects emerging from physics that may eventually lead to creating propulsion breakthroughs -the kind of breakthroughs that could revolutionize space flight and enable human voyages to other star systems. Experiments and theories were discussed regarding the coupling of gravity and electromagnetism, vacuum fluctuation energy, warp drives and wormholes, and superluminal quantum tunneling. Because the propulsion goals are presumably far from fruition, a special emphasis was to identify affordable, near-term, and credible research tasks that could make measurable progress toward these grand ambitions. This workshop was one of the first steps for the new NASA Breakthrough Propulsion Physics program led by the NASA Lewis Research Center.

  9. Breakthrough Propulsion Physics Workshop Preliminary Results

    Science.gov (United States)

    Millis, Marc G.

    1997-01-01

    In August, 1997, a NASA workshop was held to assess the prospects emerging from physics that might lead to creating the ultimate breakthroughs in space transportation: propulsion that requires no propellant mass, attaining the maximum transit speeds physically possible, and breakthrough methods of energy production to power such devices. Because these propulsion goals are presumably far from fruition, a special emphasis was to identify affordable, near-term, and credible research that could make measurable progress toward these propulsion goals. Experiments and theories were discussed regarding the coupling of gravity and electromagnetism, vacuum fluctuation energy, warp drives and wormholes, and superluminal quantum tunneling. Preliminary results of this workshop are presented, along with the status of the Breakthrough Propulsion Physics program that conducted this workshop.

  10. The Breakthrough Listen Search for Intelligent Life

    Science.gov (United States)

    Croft, Steve; Siemion, Andrew; De Boer, David; Enriquez, J. Emilio; Foster, Griffin; Gajjar, Vishal; Hellbourg, Greg; Hickish, Jack; Isaacson, Howard; Lebofsky, Matt; MacMahon, David; Price, Daniel; Werthimer, Dan

    2018-01-01

    The $100M, 10-year philanthropic "Breakthrough Listen" project is driving an unprecedented expansion of the search for intelligent life beyond Earth. Modern instruments allow ever larger regions of parameter space (luminosity function, duty cycle, beaming fraction, frequency coverage) to be explored, which is enabling us to place meaningful physical limits on the prevalence of transmitting civilizations. Data volumes are huge, and preclude long-term storage of the raw data products, so real-time and machine learning processing techniques must be employed to identify candidate signals as well as simultaneously classifying interfering sources. However, the Galaxy is now known to be a target-rich environment, teeming with habitable planets.Data from Breakthrough Listen can also be used by researchers in other areas of astronomy to study pulsars, fast radio bursts, and a range of other science targets. Breakthrough Listen is already underway in the optical and radio bands, and is also engaging with facilities across the world, including Square Kilometer Array precursors and pathfinders. I will give an overview of the technology, science goals, data products, and roadmap of Breakthrough Listen, as we attempt to answer one of humanity's oldest questions: Are we alone?

  11. Breakthroughs in Action Research through Poetry

    Science.gov (United States)

    Barrett, Terry

    2011-01-01

    This paper discusses how major breakthroughs in generating, analysing and disseminating action research about problem-based learning were made through the medium of poetry. I used poetry in three ways: as data, as an interpretive device and as a reflective medium. Poetry helped me to disseminate my research in provocative, memorable and…

  12. Information and Announcements The Breakthrough Prize

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 19; Issue 10. Breakthrough Prize. B Sury Rajaram Nityananda Dipshikha Chakravortty. Information and Announcements Volume 19 Issue 10 October 2014 pp 966-969. Fulltext. Click here to view fulltext PDF. Permanent link:

  13. Exploring the Market for Breakthrough Technologies

    NARCIS (Netherlands)

    Ortt, J. Roland; Langley, David J.; Pals, Nico

    2007-01-01

    In this article, the gap between futures research (long term) and market research (short term) is closed in two ways. Firstly, by describing methods of market exploration that can be used earlier on in the process of development and diffusion of breakthrough technologies, so market research can be

  14. Breakthrough cancer pain – still a challenge

    Directory of Open Access Journals (Sweden)

    Mañas A

    2012-11-01

    Full Text Available Cesar Margarit,1 Joaquim Juliá,2 Rafael López,3 Antonio Anton,4 Yolanda Escobar,5 Ana Casas,6 Juan Jesús Cruz,7 Rafael Galvez,8 Ana Mañas,9 Francisco Zaragozá101Pain Unit, Alicante University General Hospital, Alicante, Spain; 2Department of Integral Support-Palliative Care, Catalan Institute of Oncology (ICO, Germans Trias i Pujol University Hospital, Badalona, Spain; 3Department of Clinical Oncology, University Hospital Complex, Santiago de Compostela, Spain; 4Department of Clinical Oncology, Miguel Servet Hospital, Zaragoza, Spain; 5Department of Clinical Oncology, Gregorio Marañón Hospital, Madrid, Spain; 6Department of Oncology, Virgen Macarena Hospital, Seville, Spain; 7Department of Clinical Oncology, Salamanca Hospital, Salamanca, Spain; 8Pain and Palliative Care Unit, Virgen de las Nieves Hospital, Granada, Spain; 9Department of Oncology–Radiotherapy, La Paz Hospital, Madrid, Spain; 10Department of Pharmacology, University of Alcalá de Henares, SpainAbstract: Breakthrough cancer pain is defined as transient pain exacerbation in patients with stable and controlled basal pain. Although variable, the prevalence of breakthrough cancer pain is high (33%–95%. According to the American Pain Foundation, breakthrough pain is observed in 50%–90% of all hospitalized cancer patients, in 89% of all patients admitted to homes for the elderly and terminal-patient care centers, and in 35% of all ambulatory care cancer patients. The management of breakthrough cancer pain should involve an interdisciplinary and multimodal approach. The introduction of new fentanyl formulations has represented a great advance and has notably improved treatment. Among these, the pectin-based intranasal formulation adjusts very well to the profile of breakthrough pain attacks, is effective, has a good toxicity profile, and allows for convenient dosing – affording rapid and effective analgesia with the added advantage of being easily administered by

  15. Prospects for Breakthrough Propulsion From Physics

    Science.gov (United States)

    Millis, Marc G.

    2004-01-01

    "Space drives", "Warp drives", and "Wormholes:" these concepts may sound like science fiction, but they are being written about in reputable journals. To assess the implications of these emerging prospects for future spaceflight, NASA supported the Breakthrough Propulsion Physics Project from 1996 through 2002. This Project has three grand challenges: (1) Discover propulsion that eliminates the need for propellant; (2) Discover methods to achieve hyper-fast travel; and (3) Discover breakthrough methods to power spacecraft. Because these challenges are presumably far from fruition, and perhaps even impossible, a special emphasis is placed on selecting incremental and affordable research that addresses the critical issues behind these challenges. Of 16 incremental research tasks completed by the project and from other sponsors, about a third were found not to be viable, a quarter have clear opportunities for sequels, and the rest remain unresolved.

  16. How to use analogies for breakthrough innovations

    OpenAIRE

    Schild, Katharina; Herstatt, Cornelius; Lüthje, Christian

    2004-01-01

    Analogies can trigger breakthrough ideas in new product development. Numerous examples demonstrate that substantial innovations often result from transferring problem solutions from one industry or domain to another. For instance, the designers of the new running shoe generation of Nike, “Nike SHOX”, use the same suspension concept like the technologies applied for Formula 1 racing cars, or the biological Lotus-effect led to the development of various self-cleaning surfaces. Academic resea...

  17. Breakthrough Propulsion Physics Project: Project Management Methods

    Science.gov (United States)

    Millis, Marc G.

    2004-01-01

    To leap past the limitations of existing propulsion, the NASA Breakthrough Propulsion Physics (BPP) Project seeks further advancements in physics from which new propulsion methods can eventually be derived. Three visionary breakthroughs are sought: (1) propulsion that requires no propellant, (2) propulsion that circumvents existing speed limits, and (3) breakthrough methods of energy production to power such devices. Because these propulsion goals are presumably far from fruition, a special emphasis is to identify credible research that will make measurable progress toward these goals in the near-term. The management techniques to address this challenge are presented, with a special emphasis on the process used to review, prioritize, and select research tasks. This selection process includes these key features: (a) research tasks are constrained to only address the immediate unknowns, curious effects or critical issues, (b) reliability of assertions is more important than the implications of the assertions, which includes the practice where the reviewers judge credibility rather than feasibility, and (c) total scores are obtained by multiplying the criteria scores rather than by adding. Lessons learned and revisions planned are discussed.

  18. Breakthrough at NIF 'unlikely' in 2010

    Science.gov (United States)

    Harris, Margaret

    2010-05-01

    Hopes of reaching a milestone in fusion research by the end of 2010 have dimmed following a US government report that plays down the chances of an early breakthrough and sharply criticizes management of the 4bn National Ignition Facility (NIF). In the report, officials from the Government Accountability Office (GAO) state that ignition - fusion's "break-even" point - is "unlikely" to occur at the laser-fusion lab this year and that "significant scientific and technical challenges" could delay or even prevent the facility from achieving ignition by 2012.

  19. The management of breakthrough pain during labour.

    Science.gov (United States)

    Akerman, Nicholas; Dresner, Martin

    2009-08-01

    There is a long history of attempts to alleviate the pain of childbirth, particularly in Asian and Middle Eastern civilisations. In the UK, it was the administration of chloroform to Queen Victoria by John Snow in 1853 that is widely credited with popularizing the idea that labour pain should and could be treated. Medical analgesia is now well established around the globe with a wealth of research evidence describing methods, efficacy and complications. In this article, we define 'primary breakthrough pain' as the moment when a woman first requests analgesia during labour. The management of this can include simple emotional support, inhaled analgesics, parenteral opioids and epidural analgesia. 'Secondary breakthrough pain' can be defined as the moment when previously used analgesia becomes ineffective. We concentrate our discussion of this phenomenon on the situation when epidural analgesia begins to fail. Only epidural analgesia offers the potential for complete analgesia, so when this effect is lost the recipient can experience significant distress and dissatisfaction. The best strategy to avert this problem is prevention by using the best techniques for epidural catheterisation and the most effective drug combinations. Even then, epidurals can lose their efficacy for a variety of reasons, and management is hampered by the fact that each rescue manoeuvre takes about 30 minutes to be effective. If the rescue protocol is too cautious, analgesia may not be successfully restored before delivery, leading to patient dissatisfaction. We therefore propose an aggressive response to epidural breakthrough pain using appropriate drug supplementation and, if necessary, the placement of a new epidural catheter. Combined spinal epidural techniques offer several advantages in this situation. The goal is to re-establish analgesia within 1 hour. The primary aim of pain management during labour and delivery is to provide the level of comfort determined as acceptable to each

  20. Creating breakthrough products from hidden needs

    OpenAIRE

    Goffin, Keith

    2011-01-01

    Many managers want their organizations to develop breakthrough products and ask their R&D departments to come up with the equivalent of the iPod or iPhone. Unfortunately, the reality is very different-most organizations struggle to come up with novel product concepts, and of the thousands of new products introduced worldwide each year, product failure is more common than success. What are the reasons for product failure and what steps can companies take to avoid it? In this ...

  1. Breakthrough curve moments scaling in hyporheic exchange

    Science.gov (United States)

    Bellin, A.; Tonina, D.; Marzadri, A.

    2015-02-01

    The interaction between stream flow and bed forms creates an uneven distribution of near-bed energy heads, which is the driving force of hyporheic exchange. Owing to the large disparity of advection characteristic times in the stream and within the hyporheic zone, solute mass exchange is often modeled by considering the latter as an immobile region. In a recent contribution Gónzalez-Pinzón et al. (2013) showed that existing models employing this hypothesis are structurally inconsistent with the scaling revealed by the analysis of 384 breakthrough curves collected in 44 streams across five continents. Motivated by this result, we analyze the scaling characteristics of a model that we recently developed by combining the analytical solution of the advective flow within the hyporheic zone with a Lagrangian solute transport model. Results show that similarly to the experimental data our model predicts breakthrough curves with a constant skewness, irrespective of the stream size, and that the scaling of the first three moments observed by Gónzalez-Pinzón et al. (2013) is also respected. Moreover, we propose regression curves that relate the first three moments of the residence time distribution with the alternate bar dimensionless depth (YBM*), a quantity that is easily measurable in the field. The connection between BTC moments and YBM* opens new possibilities for modeling transport processes at the catchment scale.

  2. Money counts for a Times Higher Education top-rank

    NARCIS (Netherlands)

    Marconi, G.; Ritzen, J.

    2014-01-01

    This paper analyses the relationship between a university’s expenditure per student and its position in international university rankings. We take into account other factors that are expected to play a role, such as university mission, size, and productive inefficiency. We formalise these concepts

  3. Controlled Nucleosynthesis Breakthroughs in Experiment and Theory

    CERN Document Server

    Adamenko, Stanislav; Merwe, Alwyn

    2007-01-01

    This book ushers in a new era of experimental and theoretical investigations into collective processes, structure formation, and self-organization of nuclear matter. It reports the results of experiments wherein for the first time the nuclei constituting our world (those displayed in Mendeleev's table as well as the super-heavy ones) have been artificially created. Pioneering breakthroughs are described, achieved at the "Proton-21" Laboratory, Kiev, Ukraine, in a variety of new physical and technological directions. A detailed description of the main experiments, their analyses, and the interpretation of copious experimental data are given, along with the methodology governing key measurements and the processing algorithms of the data that empirically confirm the occurrence of macroscopic self-organizing processes leading to the nuclear transformations of various materials. The basic concepts underlying the initiation of self-sustaining collective processes that result in the formation of nuclear structures a...

  4. Breakthrough seizures after starting vilazodone for depression.

    Science.gov (United States)

    McKean, James; Watts, Hannah; Mokszycki, Robert

    2015-03-01

    Vilazodone is a new selective serotonin reuptake inhibitor (SSRI) and serotonin 5-HT1a partial agonist that is approved by the United States Food and Drug Administration to treat major depression. SSRI-induced seizures are rare and are more likely to be associated with larger doses and severe symptoms such as those present in serotonin syndrome. Several case reports have implicated SSRIs, buspirone, or the combination of these agents as the cause of seizures, but these reports were confounded with either coingestions or doses that exceeded FDA recommendations. We describe a 22-year-old woman with a history of seizure disorder who had been seizure free for the previous 8 years and experienced two breakthrough seizures shortly after starting vilazodone. Her dose of vilazodone had recently been titrated to 40 mg/day when she experienced the first seizure. She was instructed to taper vilazodone over the next several days, then discontinue the drug, and then follow up with her neurologist. Based on the patient's history, physical examination, and recent dose increase, it was plausible that vilazodone was the cause of the seizures. Use of the Naranjo adverse drug reaction probability scale indicated a possible relationship (score of 4) between her development of seizures and vilazodone therapy. The pharmacodynamics of this particular class of SSRI has both proconvulsive and anticonvulsive mechanisms. This is of particular concern in patients with a history of seizure disorder who are starting antidepressive therapy. In persons with epilepsy who are taking vilazodone and experience breakthrough seizures, practitioners should consider this drug as a potential cause of these seizures. Thus, until future research and experience with vilazodone can provide a definitive answer, clinicians should be cautious when prescribing this medication to treat depression in patients with a history of seizure disorder. © 2015 Pharmacotherapy Publications, Inc.

  5. Developing Standards for Breakthrough Therapy Designation in Oncology

    Science.gov (United States)

    Horning, Sandra J.; Haber, Daniel A.; Selig, Wendy K.D.; Ivy, S. Percy; Roberts, Samantha A.; Allen, Jeff D.; Sigal, Ellen V.; Sawyers, Charles L.

    2013-01-01

    In July 2012, Congress passed the Food and Drug Administration Safety and Innovation Act (FDASIA). The Advancing Breakthrough Therapies for Patients Act was incorporated into a Title of FDASIA to expedite clinical development of new, potential “breakthrough” drugs or treatments that show dramatic responses in early phase studies. Using this regulatory pathway, once a promising new drug candidate is designated as a “Breakthrough Therapy”, the FDA and sponsor would collaborate to determine the best path forward to abbreviate the traditional three-phase approach to drug development. The breakthrough legislation requires that an FDA Guidance be drafted that details specific requirements of the bill to aid FDA in implementing requirements of the Act. In this article, we have proposed criteria to define a product as a Breakthrough Therapy, and discussed critical components of the development process that would require flexibility in order to enable expedited development of a Breakthrough Therapy. PMID:23719260

  6. Breakthrough Listen - A New Search for Life in the Universe

    Science.gov (United States)

    Worden, Pete

    On July 20, 2015 Yuri Milner and Stephen Hawking announced a new set of scientific initiatives - a SETI search called Breakthrough Listen and a contest to devise potential messages in response to a detection entitled Breakthrough Message. These are the first of several privately-funded Breakthrough Initiatives, designed to answer the fundamental science questions surrounding the origin, extent and nature of life in the universe. The initiatives are managed by the Breakthrough Prize Foundation. With Breakthrough Listen, Radio SETI observations have begun at the Green Bank Radio Telescope (GBT) and optical SETI at the Lick Observatory Automated Planet Finder (APF). Observations will soon commence at the CSIRO Parkes Radio Telescope. Other SETI instruments and observations are under consideration. In addition, several other initiatives are under development including an expanded search for life in the universe.

  7. Inertial frames and breakthrough propulsion physics

    Science.gov (United States)

    Millis, Marc G.

    2017-09-01

    The term ;Breakthrough Propulsion Physics; comes from the NASA project by that name which examined non-rocket space drives, gravity control, and faster-than-light travel. The focus here is on space drives and the related unsolved physics of inertial frames. A ;space drive; is a generic term encompassing any concept for using as-yet undiscovered physics to move a spacecraft instead of existing rockets, sails, or tethers. The collective state of the art spans mostly steps 1-3 of the scientific method: defining the problem, collecting data, and forming hypotheses. The key issues include (1) conservation of momentum, (2) absence of obvious reaction mass, and (3) the net-external thrusting requirement. Relevant open problems in physics include: (1) the sources and mechanisms of inertial frames, (2) coupling of gravitation to the other fundamental forces, and (3) the nature of the quantum vacuum. Rather than following the assumption that inertial frames are an immutable, intrinsic property of space, this paper revisits Mach's Principle, where it is posited that inertia is relative to the distant surrounding matter. This perspective allows conjectures that a space drive could impart reaction forces to that matter, via some as-yet undiscovered interaction with the inertial frame properties of space. Thought experiments are offered to begin a process to derive new hypotheses. It is unknown if this line of inquiry will be fruitful, but it is hoped that, by revisiting unsolved physics from a propulsion point of view, new insights will be gained.

  8. Clinical characterization of breakthrough bacteraemia: a survey of 392 episodes.

    Science.gov (United States)

    López Dupla, M; Martinez, J A; Vidal, F; Almela, M; López, J; Marco, F; Soriano, A; Richart, C; Mensa, J

    2005-08-01

    Few data are available on the clinical features of patients who develop breakthrough bacteraemia, understood as positive blood cultures despite appropriate antibiotic therapy. To determine the clinical significance and outcome of a large series of breakthrough bacteraemia. Retrospective analysis of a prospectively collected database. Two university-affiliated hospitals in Catalonia, Spain. A total of 392 individuals who suffered an episode of breakthrough bacteraemia recorded between 1997 and 2002. Demographic characteristics, underlying diseases, origin of infection, sources of infection, microorganisms isolated, McCabe and Jackson prognostic criteria, and mortality were analysed. Breakthrough bacteraemia was detected in 392 of 6324 (6.1%) episodes of bacteraemia. Eighty per cent of episodes were nosocomial. The most frequent source of infection in breakthrough bacteraemia was endovascular (70%). Coagulase-negative staphylococci, Staphylococcus aureus, and Pseudomonas aeruginosa were the most significant microorganisms involved. Nosocomial acquisition together with selected sources (central venous catheter, endocarditis and other endovascular foci), underlying conditions (neutropenia, polytraumatism, allogenic bone marrow and kidney transplantation), and particular microbial aetiologies (S. aureus, P. aeruginosa and polymicrobial) were independently associated with increased risk for developing breakthrough bacteraemia. Crude mortality rate was greater in patients with breakthrough bacteraemia (16% vs. 12.3%; P<0.05), and this condition was an independent predictor of death (OR 1.4, 95% CI, 1-1.9; P=0.04). In view of a case of breakthrough bacteraemia it is mandatory to search for an endovascular focus. Empiric treatment should be directed to cover S. aureus, coagulase-negative staphylococci and nonfermentative Gram-negative bacilli. Breakthrough bacteraemia is an independent predictor of death.

  9. Aldosterone breakthrough during aliskiren, valsartan, and combination (aliskiren + valsartan) therapy.

    Science.gov (United States)

    Bomback, Andrew S; Rekhtman, Yelena; Klemmer, Philip J; Canetta, Pietro A; Radhakrishnan, Jai; Appel, Gerald B

    2012-01-01

    Aldosterone levels increase in 30%-40% of patients on angiotensin-converting enzyme inhibitors and/or angiotensin receptor blockers over the long term. This "aldosterone breakthrough" may carry important clinical consequences given aldosterone's nonepithelial, pro-fibrotic actions. The renin inhibitor, aliskiren, by suppressing the renin-angiotensin-aldosterone system (RAAS) proximally, may limit breakthrough compared to conventional RAAS blockade. This open-label study (NCT01129557) randomized subjects to aliskiren 300 mg daily (A), valsartan 320 mg daily (V), or aliskiren 150 mg + valsartan 160 mg daily (A+V) for 9 months. Eligible subjects had proteinuria >300 mg/day, estimated glomerular filtration rate (eGFR) >45 mL/min/1.73 m(2), and systolic blood pressure (BP) >130 or diastolic BP >80 mm Hg. Serum and 24-hour urine aldosterone (indexed to 24-hour urine Na) were checked before initiation of therapy and at 3, 6, and 9 months. Aldosterone breakthrough was defined as a sustained increase from baseline aldosterone by study end. The study was intended to enroll 120 subjects but was terminated early by the sponsor. We present here the results of 33 subjects who completed the protocol, of which 12 were randomized to A, 11 were randomized to V, and 10 were randomized to A+V. Mean baseline eGFR was 75.5 (±23.3) mL/min/1.73 m(2); baseline proteinuria was 3104 (±2943) mg/day; and baseline BP was 134.7 (±10.5)/84.8 (±8.4) mm Hg. Three (27%) subjects on V, three (25%) subjects on A, and three (30%) subjects on A+V had aldosterone breakthrough. Mean proteinuria reduction was 31% from baseline in all subjects: 30% in subjects with breakthrough vs. 32% in subjects without breakthrough. Mean BP reduction was 11.0/8.8 mm Hg in all subjects: 8.4/6.1 mm Hg in subjects with breakthrough vs. 12.0/9.8 mm Hg in subjects without breakthrough. Aliskiren, alone or in combination with valsartan, did not reduce the incidence of aldosterone breakthrough in subjects with hypertension

  10. Foreknowledge of breakthroughs science and technology foresight, and the early identification of areas of breakthrough

    International Nuclear Information System (INIS)

    Papon, P.

    2010-01-01

    The progress of science and technology has been so rapid in the last few decades that it receives especial attention in forecasting and foresight exercises. But, because they are too greatly in thrall to the dominant paradigms and hence favour a linear perspective, the experts who deal with these questions pay more attention to the future of technologies than to scientific advances and revolutions. The bulk of their work consists, then, in anticipating, by various different methods (Delphi surveys, Road-maps, etc.), at what date a particular technology might be available (without, however, always correctly gauging the conditions for its social appropriation or the applications to which it might be put). In this article, Pierre Papon expounds a much more original and promising approach for attempting to anticipate the discoveries that are likely radically to transform the fields of scientific knowledge by investigating the phenomena that may potentially lead to fundamental revolutions. After reminding us of the premonitory thinking of a number of authors - in the fields, for example, of genetics and computer science -, he endeavors to describe some of the dominant paradigms, particularly in quantum physics and molecular biology. In this way, he shows the advances they have made possible, and also their limitations, and explores what new scientific leaps forward might occur, bringing radically new technological breakthroughs between now and 2050. Papon reminds us, at the same time that, 'as science is not something isolated within society'; it has a duty to contribute to meeting the great challenges that face us - of work, health, nutrition and sustainable development, particularly where energy and climate are concerned. He therefore examines the ways in which future scientific and technological advances might provide solutions and how important it might be to 'translate the questions society poses into scientific questions'. He thus argues implicitly for strategic

  11. Application of the rainfall infiltration breakthrough (RIB) model for ...

    African Journals Online (AJOL)

    Application of the rainfall infiltration breakthrough (RIB) model for groundwater recharge estimation in west coastal South Africa. ... the data from Oudebosch with different rainfall and groundwater abstraction inputs are simulated to explore individual effects on water levels as well as recharge rate estimated on a daily basis.

  12. Technical Breakthroughs in the Wearable Artificial Kidney (WAK)

    OpenAIRE

    Gura, Victor; Macy, Alexandra S.; Beizai, Masoud; Ezon, Carlos; Golper, Thomas A.

    2009-01-01

    Background: The wearable artificial kidney (WAK) has been a holy grail in kidney failure for decades. Described herein are the breakthroughs that made possible the creation of the WAK V1.0 and its advanced versions V 1.1 and 1.2.

  13. Back to the future, current trends in breakthrough pain treatments

    Directory of Open Access Journals (Sweden)

    Max Watson

    2011-01-01

    Full Text Available The importance of effectively managing breakthrough pain for patients on long term background analgesia has recently lead to the development of a range of new products aimed at filling this need. This review article looks at the reasons behind these developments and their implications for clinical practice in resource limited situations.

  14. Breakthrough VZV infection after immunization, presenting as herpes zoster.

    NARCIS (Netherlands)

    Schade, R.P.; Bakkers, J.; Cornelissen, M.; Koster-Kamphuis, L.; Melchers, W.J.G.; Galama, J.M.D.

    2008-01-01

    An immunocompromized, VZV-vaccinated child had a breakthrough infection with VZV, acquired at a day-care centre during a chickenpox outbreak. Interestingly, the infection manifested as herpes zoster of 1 dermatome. Typing showed wild-type virus, which suggests that exogenous reinfection with a new

  15. Dissolved CO2Increases Breakthrough Porosity in Natural Porous Materials.

    Science.gov (United States)

    Yang, Y; Bruns, S; Stipp, S L S; Sørensen, H O

    2017-07-18

    When reactive fluids flow through a dissolving porous medium, conductive channels form, leading to fluid breakthrough. This phenomenon is caused by the reactive infiltration instability and is important in geologic carbon storage where the dissolution of CO 2 in flowing water increases fluid acidity. Using numerical simulations with high resolution digital models of North Sea chalk, we show that the breakthrough porosity is an important indicator of dissolution pattern. Dissolution patterns reflect the balance between the demand and supply of cumulative surface. The demand is determined by the reactive fluid composition while the supply relies on the flow field and the rock's microstructure. We tested three model scenarios and found that aqueous CO 2 dissolves porous media homogeneously, leading to large breakthrough porosity. In contrast, solutions without CO 2 develop elongated convective channels known as wormholes, with low breakthrough porosity. These different patterns are explained by the different apparent solubility of calcite in free drift systems. Our results indicate that CO 2 increases the reactive subvolume of porous media and reduces the amount of solid residual before reactive fluid can be fully channelized. Consequently, dissolved CO 2 may enhance contaminant mobilization near injection wellbores, undermine the mechanical sustainability of formation rocks and increase the likelihood of buoyance driven leakage through carbonate rich caprocks.

  16. Technology breakthrough and clinic application of gemstone CT

    International Nuclear Information System (INIS)

    Wang Jian

    2009-01-01

    Gemstone CT breaks through the conventional CT development model of expending detector's width over the past decade. By gemstone detector and spectral imaging technology, it could provide higher diagnostic accuracy, quicker diagnosis speed and higher definition of imaging, and better meet comprehensive clinical needs than conventional CT. To summarize technical breakthrough and clinical application of Gemstone CT. (authors)

  17. Breakthrough supplies young fish to a hungry industry | IDRC ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2010-10-28

    Oct 28, 2010 ... The technological breakthrough made the industry's growth possible in Southeast Asia. At the time, the Philippines produced about 200,000 tonnes of milkfish. ... for about half of the farmed fish production in the Philippines. An important source of animal protein, it is vital to the country's food security.

  18. Breakthrough candidemia in children: clinical and microbiological characteristics, therapeutic strategies and impact on outcomes.

    Science.gov (United States)

    Lai, Mei-Yin; Hsu, Jen-Fu; Chu, Shih-Ming; Wu, I-Hsyuan; Huang, Hsuan-Rong; Lin, Chun-Chih; Lee, I-Ta; Chiang, Ming-Chou; Fu, Ren-Huei; Tsai, Ming-Horng

    2017-06-01

    To assess the characteristics, treatments, risk factors and outcomes of breakthrough candidemia in children. Episodes of breakthrough candidemia in children were compared with the remaining episodes in a 13-year cohort study. Out of 319 episodes, 45 (14.1%) were breakthrough candidemia. Breakthrough candidemia occurred in patients with more acutely ill conditions, and the majority was caused by non-albicans Candida species (73.3%; 33 episodes). A total of 79.1% of breakthrough candidemia were caused by antifungal-susceptible Candida isolates and emergence of resistance was the mechanism in five cases of patients receiving fluconazole. Episodes of breakthrough candidemia had significantly higher illness severity and higher rates of fungemia-attributable mortality. Breakthrough candidemia independently contributed to unfavorable outcomes, and more aggressive treatment strategies are warranted when breakthrough candidemia is encountered.

  19. Methodology for Examining Potential Technology Breakthroughs for Mitigating CO2 and Application to Centralized Solar Photovoltaics

    Science.gov (United States)

    Aggressive reductions in US greenhouse gas emissions will require radical changes in how society generates and uses energy. Technological breakthroughs will be necessary if we are to make this transition cost effectively. With limited resources, understanding the breakthrough pot...

  20. Management of breakthrough pain in patients with cancer.

    Science.gov (United States)

    William, Leeroy; Macleod, Rod

    2008-01-01

    Breakthrough pain (BTP) in patients with cancer lacks a consensus definition and is subsequently inadequately diagnosed and assessed, therefore making it more challenging to manage. Cancer pain is generally moderate to severe in intensity and persistent in nature. Despite the problematic definition of BTP, it is generally described as having similar intensity, but may also be transitory and variable in predictability. Most breakthrough analgesia fails to be effective in the time required for BTP. No useful analgesia is therefore provided but drug adverse effects escalate. Cancer pain management relies on the WHO analgesic ladder. The frequency of BTP and its inadequate management means that it has significant adverse effects on patients, their families and those involved in their care. This article outlines a systematic, clinical and evidence-based approach to managing BTP in patients with cancer that emphasizes a holistic approach and an understanding of multidimensional 'total pain'. Guidelines for managing BTP are presented and areas of developing research are identified.

  1. Breakthroughs In Low-Profile Leaky-Wave HPM Antennas

    Science.gov (United States)

    2014-09-18

    YYYY) 18-09-2014 2. REPORT TYPE Quarterly 3. DATES COVERED (From - To) 19 Jun 2014 – 18 Sep 2014 4. TITLE AND SUBTITLE Breakthroughs in Low...Table 1. Types of low-profile, forward-traveling, fast-wave, leaky-wave, HPM antennas Acronym Full Name Identifying Geometry / Feature(s) FAWSEA...more parallel waveguides (aka, channels), with a radiated plane wave that exits the overall aperture at a well-defined angle. Since the FAWSEA aper

  2. Breakthroughs in Photonics 2013: Photoacoustic Tomography in Biomedicine

    OpenAIRE

    Yao, Junjie; Wang, Lihong V.

    2014-01-01

    Photoacoustic tomography (PAT) is one of the fastest growing biomedical imaging modalities in the last decade. Building on its high scalability and complementary imaging contrast to other mainstream modalities, PAT has gained substantial momentum in both preclinical and clinical studies. In 2013, PAT has grown markedly in both its technological capabilities and biomedical applications. In particular, breakthroughs have been made in super-resolution imaging, deep blood flow measurement, small ...

  3. New AIDA-2020 call for breakthrough detector technologies

    CERN Multimedia

    2016-01-01

    Physicists, engineers, and industry will be interested in a new proof-of-concept fund for breakthrough projects from the general field of detector development and testing.   Launched in the framework of the European project AIDA-2020, this open call will provide up to 200k€ of seed funding to support innovative and societal applications with a focus on industry-oriented applications. The deadline for applying is 20 October 2016. More information here.

  4. Generating breakthrough new product ideas feeding the innovation funnel

    CERN Document Server

    Cooper, Robert

    2007-01-01

    Senior executives are experiencing a shortage of game-changing ideas that drive growth. This book explains how to feed the innovation funnel with a steady stream of breakthrough new product ideas, providing numerous examples of the methods, approaches and techniques used by leading companies such as Motorola and Procter & Gamble. Learn more about the impact you can make by leveraging an innovation strategy, voice-of-customer research, external ideas via open innovation, employees? creative talent and fundamental research. Establish a proactive Discovery Stage that focuses on the drivers of innovation performance to transform your organization into an innovation machine.

  5. Tsetse Fly Genome Breakthrough Brings Hope for African Farmers

    International Nuclear Information System (INIS)

    2014-01-01

    Scientists have cracked the genetic code of the bloodsucking tsetse fly, prompting hope that the breakthrough will help future efforts to control one of the most devastating livestock diseases in sub-Saharan Africa spread by the insect. The tsetse genome was sequenced and annotated during a 10-year international collaborative effort that involved the Insect Pest Control Laboratory run jointly by the United Nations Food and Agriculture Organization (FAO) and the International Atomic Energy Agency (IAEA) in Vienna. The achievement allows scientists to better study the fly's genes and their functions, knowledge that should open the door for researching ways to control the insect

  6. Daratumumab – breakthrough drug in multiple myeloma therapy

    Directory of Open Access Journals (Sweden)

    Artur Jurczyszyn

    2014-11-01

    Full Text Available Multiple myeloma (MM remains incurable despite important recent advances in treatment. Over the last 2 years, an anti-CD38 monoclonal antibody daratumumab (DARA has emerged as a breakthrough targeted therapy for patients with MM. Early-stage clinical trials have found DARA to be safe and to have encouraging clinical activity as a single agent and in combination with lenalidomide in heavily pretreated, relapsed patients in whom other novel agents (such as bortezomib, thalidomide and lenalidomide as well as stem cell transplant has already failed. This review discusses the preclinical and clinical development of DARA, its pathophysiological basis, and its prospects for future use in MM.

  7. Mini-columns for Conducting Breakthrough Experiments. Design and Construction

    Energy Technology Data Exchange (ETDEWEB)

    Dittrich, Timothy M. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Reimus, Paul William [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Ware, Stuart Douglas [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2015-06-11

    Experiments with moderately and strongly sorbing radionuclides (i.e., U, Cs, Am) have shown that sorption between experimental solutions and traditional column materials must be accounted for to accurately determine stationary phase or porous media sorption properties (i.e., sorption site density, sorption site reaction rate coefficients, and partition coefficients or Kd values). This report details the materials and construction of mini-columns for use in breakthrough columns to allow for accurate measurement and modeling of sorption parameters. Material selection, construction techniques, wet packing of columns, tubing connections, and lessons learned are addressed.

  8. (Mis)understanding Science: The Problem with Scientific Breakthroughs.

    Science.gov (United States)

    Evans, James P

    2016-09-01

    On Saturday morning, February 28, 1953, the mystery of heredity appeared secure. Humans hadn't the faintest idea of how genetic information was transmitted-how the uncanny resemblance between mother and daughter, grandfather and grandson was conveyed across generations. Yet, by that Saturday afternoon, two individuals, James Watson and Francis Crick, had glimpsed the solution to these mysteries. The story of Watson and Crick's great triumph has been told and retold and has rightly entered the pantheon of scientific legend. But Watson and Crick's breakthrough was just that: a rupture and dramatic discontinuity in human knowledge that solved a deep mystery, the likes of which occurs, perhaps, a couple of times each century. And that's the problem. The story is just so good and so irresistible that it has misled generations of scientists about what to expect regarding a life in science. And more damaging, the resulting breakthrough mentality misleads the public, the media, and society's decision-makers about how science really works, all to the detriment of scientific progress and our society's well-being. © 2016 The Hastings Center.

  9. Turning Regenerative Medicine Breakthrough Ideas and Innovations into Commercial Products.

    Science.gov (United States)

    Bayon, Yves; Vertès, Alain A; Ronfard, Vincent; Culme-Seymour, Emily; Mason, Chris; Stroemer, Paul; Najimi, Mustapha; Sokal, Etienne; Wilson, Clayton; Barone, Joe; Aras, Rahul; Chiesi, Andrea

    2015-12-01

    The TERMIS-Europe (EU) Industry committee intended to address the two main critical issues in the clinical/commercial translation of Advanced Therapeutic Medicine Products (ATMP): (1) entrepreneurial exploitation of breakthrough ideas and innovations, and (2) regulatory market approval. Since January 2012, more than 12,000 publications related to regenerative medicine and tissue engineering have been accepted for publications, reflecting the intense academic research activity in this field. The TERMIS-EU 2014 Industry Symposium provided a reflection on the management of innovation and technological breakthroughs in biotechnology first proposed to contextualize the key development milestones and constraints of allocation of financial resources, in the development life-cycle of radical innovation projects. This was illustrated with the biofuels story, sharing similarities with regenerative medicine. The transition was then ensured by an overview of the key identified challenges facing the commercialization of cell therapy products as ATMP examples. Real cases and testimonies were then provided by a palette of medical technologies and regenerative medicine companies from their commercial development of cell and gene therapy products. Although the commercial development of ATMP is still at the proof-of-concept stage due to technology risks, changing policies, changing markets, and management changes, the sector is highly dynamic with a number of explored therapeutic approaches, developed by using a large diversity of business models, both proposed by the experience, pitfalls, and successes of regenerative medicine pioneers, and adapted to the constraint resource allocation and environment in radical innovation projects.

  10. Energy investments as foreseen by the IEA

    International Nuclear Information System (INIS)

    Anon.

    2004-01-01

    A new study carried out by the international energy agency (IEA) completes the previous analysis made by the World Energy Outlook and published in September 2002. The IEA study make a projection over the coming 30 years of the investments required for the transformation of the energy resources into the necessary supplies to the growing up world population needs. In addition to the IEA team, 63 French and foreign experts contributed to this study. This work has been carried out under the direction of F. Birol, economic director of the IEA. The reference scenario is the one of the 2002 edition of the World Energy Outlook, according to which the world energy market would show a growth of about two thirds during the next three decades, which corresponds to a yearly growth of 1.7%. This article summarizes the content of this study. (J.S.)

  11. Is a Breakthrough on Climate Change Governance on the Horizon?

    DEFF Research Database (Denmark)

    Figueroa, Maria Josefina

    The recently released Fifth Assessment report of the IPCC has highlighted again with unprecedented scope and insight the urgency of addressing climate change. The international community has pledged to devise the next international agreement on climate change by 2015, while the EU and in particular...... the Scandinavian countries have forged ahead advancing a variety of policies to respond to climate change. Similarly, regions, municipalities, and private actors across the world are also contributing to climate governance. This paper asks whether the world is reaching a tipping point where a breakthrough...... on climate change governance is near?. The answer is approached by contrasting the governance model within which the IPCC operates and the conditions of policy and governance interaction toward the more scientific foundations laid out by IPCC, with the range of multilateral climate governance...

  12. Islet transplantation: lessons learned since the Edmonton breakthrough.

    Science.gov (United States)

    Langer, R M

    2010-06-01

    This work sought to summarize the main issues of the last decade in the field of clinical islet transplantation. Ten years ago in Edmonton, a new protocol initiated for islet transplantation brought a breakthrough to the field. The earlier, rather poor results were in a sharp contrast to the first published results of 100% insulin freedom at 1 year. However, later it became clear that the promising initial results decline with time; at around 5 years, only about 10% of the patients maintain freedom from external insulin. Despite that fact, a milestone was set and intensive research started worldwide. New hopes were raised for patients. Modifications of the original protocol have been implemented to improve clinical results; however, islet transplantation remains an experimental procedure to date.

  13. How to revive breakthrough innovation in the pharmaceutical industry.

    Science.gov (United States)

    Munos, Bernard H; Chin, William W

    2011-06-29

    Over the past 20 years, pharmaceutical companies have implemented conservative management practices to improve the predictability of therapeutics discovery and success rates of drug candidates. This approach has often yielded compounds that are only marginally better than existing therapies, yet require larger, longer, and more complex trials. To fund them, companies have shifted resources away from drug discovery to late clinical development; this has hurt innovation and amplified the crisis brought by the expiration of patents on many best-selling drugs. Here, we argue that more breakthrough therapeutics will reach patients only if the industry ceases to pursue "safe" incremental innovation, re-engages in high-risk discovery research, and adopts collaborative innovation models that allow sharing of knowledge and costs among collaborators.

  14. Serum (1,3)-beta-D-glucan is an inefficient marker of breakthrough candidemia.

    Science.gov (United States)

    Abe, Masahiro; Kimura, Muneyoshi; Araoka, Hideki; Taniguchi, Shuichi; Yoneyama, Akiko

    2014-11-01

    The aim of this study was to evaluate the usefulness of serum (1,3)-beta-D-glucan (BDG) for earlier detection of breakthrough candidemia. We reviewed the medical records of patients with candidemia from January 2008 to March 2013. Serum BDG was measured by Wako turbidimetric assay. During the study period, a total of 147 cases of candidemia were identified, and 31 patients met the criteria for breakthrough candidemia. Serum BDG levels were measured in 25 patients with breakthrough candidemia and 67 patients with nonbreakthrough candidemia. Almost all of the patients with breakthrough candidemia had hematological malignancies. More candidemia were caused by non-C. albicans Candida in the breakthrough group than in the nonbreakthrough group (92.0% vs. 61.8%, p = .005). The median BDG value was significantly lower in breakthrough episodes than in non-breakthrough episodes (18.5 pg/ml vs. 90.4 pg/ml, p = .01). Moreover, BDG values under the cutoff was significantly higher in patients with breakthrough candidemia than in those with nonbreakthrough candidemia (44% vs. 19%, p = .03). In summary, BDG alone was insufficient to detect breakthrough candidemia, and candidemia could occur in patients being treated with antifungal agents, even when the BDG value was under the cutoff value. © The Author 2014. Published by Oxford University Press on behalf of The International Society for Human and Animal Mycology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

  15. Single-dose fentanyl sublingual spray for breakthrough cancer pain

    Directory of Open Access Journals (Sweden)

    Taylor DR

    2013-07-01

    Full Text Available Donald R Taylor Comprehensive Pain Care PC, Marietta, GA, USA Abstract: Breakthrough cancer pain (BTCP is defined as a transient exacerbation of pain that arises in patients with otherwise controlled persistent pain. BTCP typically has a rapid onset and relatively short duration, but it causes a significant amount of physical and psychological distress for patients. Several rapid-onset fentanyl formulations have been introduced in the USA to replace traditional oral opioids for the treatment of BTCP: a transmucosal lozenge, a sublingual orally disintegrating tablet, a buccal tablet, a buccal soluble film, a pectin nasal spray and, the newest formulation to enter the market, a sublingual spray. This article reviews the six rapid-onset formulations of fentanyl approved in the USA for the management of BTCP with emphasis on describing the published literature on fentanyl sublingual spray. The different fentanyl formulations vary in pharmacokinetic properties and ease of use, but all have a rapid onset and a relatively short duration of analgesia. Fentanyl sublingual spray has demonstrated absorption within 5 minutes of administration, with fentanyl plasma concentrations increasing over the first 30 minutes and remaining elevated for 60–90 minutes in pharmacokinetic studies in healthy subjects. Fentanyl sublingual spray shows linear dose proportionality, and changes in the temperature or acidity of the oral cavity do not alter its pharmacokinetic properties. In patients with BTCP, statistically significant pain relief is measurable at 5 minutes after administration of fentanyl sublingual spray, when compared with placebo, with significant pain relief lasting at least 60 minutes after administration. Adverse events are typical of opioid treatment and are considered mild to moderate in intensity. In summary, fentanyl sublingual spray provides rapid onset of analgesia and is a tolerable and effective treatment for BTCP. Keywords: breakthrough pain

  16. 75 Breakthroughs by the U.S. Department of Energy's National Laboratories; Breakthroughs 2017

    Energy Technology Data Exchange (ETDEWEB)

    None

    2017-01-01

    Born at a time when the world faced a dire threat, the National Laboratory System protects America through science and technology. For more than 75 years, the Department of Energy’s national laboratories have solved important problems in science, energy and national security. Partnering with industry and academia, the laboratories also drive innovation to advance economic competitiveness and ensure our nation’s future prosperity. Over the years, America's National Laboratories have been changing and improving the lives of millions of people and this expertise continues to keep our nation at the forefront of science and technology in a rapidly changing world. This network of Department of Energy Laboratories has grown into 17 facilities across the country. As this list of breakthroughs attests, Laboratory discoveries have spawned industries, saved lives, generated new products, fired the imagination and helped to reveal the secrets of the universe.

  17. Calculation of Breakthrough Time in Oil Recovery by the Use of ...

    African Journals Online (AJOL)

    Recent studies indicate that percolation models may be be used to predict breakthrough time by the use of the fractal dimension of the shortest path. The paper shows that better predictions can be made about the breakthrough time when the actual fractal dimension of the boundaries of the oil reservoirs are calculated.

  18. Alternative sample-introduction technique to avoid breakthrough in gradient-elution liquid chromatography of polymers

    NARCIS (Netherlands)

    Reingruber, E.; Bedani, F.; Buchberger, W.; Schoenmakers, P.

    2010-01-01

    Gradient-elution liquid chromatography (GELC) is a powerful tool for the characterization of synthetic polymers. However, gradient-elution chromatograms often suffer from breakthrough phenomena. Breakthrough can be averted by using a sample solvent as weak as the mobile phase. However, this approach

  19. The New Three Rs: Research, Reading, and Results. Breakthrough to Literacy[TM].

    Science.gov (United States)

    McGraw-Hill Companies, New York, NY. Educational and Professional Publishing Group.

    Research in school districts throughout the United States shows that children who use "Breakthrough to Literacy" achieve significant and lasting improvement in their reading skills. At virtually every site studied where implementation criteria were met, children who participated in "Breakthrough" demonstrated marked increases…

  20. Differences in characteristics between first and breakthrough neutropenic fever after chemotherapy in patients with hematologic disease

    Directory of Open Access Journals (Sweden)

    Eun Young Nam

    2016-03-01

    Conclusion: It is concluded that the epidemiological profile of breakthrough neutropenic fever is different from that of first episode fever. These data reinforce the view that pooled reporting of neutropenic fever may be misleading, and that clinicians should approach breakthrough fever as a distinct entity.

  1. From Islamicizing the Sciences to Strategizing for Muslims’ Scientific Breakthrough

    Directory of Open Access Journals (Sweden)

    RAFIU IBRAHIM ADEBAYO

    2015-06-01

    Full Text Available At inception, science and religion were seen as poles apart and so science was vehemently kicked against by religious leaders. Islam later came to bridge the gap between religion and science only to be later hijacked by the Western world and so science was rewritten from a purely materialist point of view; hence, experts in modern science became over-confident and arrogant to have relegated religion to the lowest ebb and looked down upon any knowledge which could not be scientifically proved. However attempts are being made to reconcile religion and science by Muslim reformers. These attempts are not without their shortcomings, hence the need for Islamization of the sciences for them to conform to the Islamic principle of unity of knowledge. However, the present researcher feels that there should be a step forward from the contemporary approaches to Islamicizing the sciences in form of colouring the Western scientific discoveries Islam, to making their own scientific breakthroughs, the type which immortalized Muslim scientists of the Islam’s golden ages. Without this, Muslims will continue to be mere consumers of the Western products. The strategy for the Ummah to achieve this is suggested in this paper.

  2. Structural mechanism of GPCR-arrestin interaction: recent breakthroughs.

    Science.gov (United States)

    Park, Ji Young; Lee, Su Youn; Kim, Hee Ryung; Seo, Min-Duk; Chung, Ka Young

    2016-03-01

    G protein-coupled receptors (GPCRs) are a major membrane receptor family with important physiological and pathological functions. In the classical signaling pathway, ligand-activated GPCRs couple to G proteins, thereby inducing G protein-dependent signaling pathways and phosphorylation by G protein-coupled receptor kinases (GRKs). This leads to an interaction with arrestins, which results in GPCR desensitization. Recently, non-classical GPCR signaling pathways, mediated by GPCR-bound arrestins, have been identified. Consequently, arrestins play important roles in GPCR signaling not only with respect to desensitization but also in relation to G protein-independent signal transduction. These findings have led to efforts to develop functionally biased (i.e. signal transduction biased) GPCR-targeting drugs. One of these efforts is aimed at understanding the structural mechanism of functionally biased GPCR signaling, which includes understanding the G protein-selectivity or arrestin-selectivity of GPCRs. This goal has not yet been achieved; however, great progress has been made during the last 3 years toward understanding the structural mechanism of GPCR-mediated arrestin activation. This review will discuss the recent breakthroughs in the conformational understanding of GPCR-arrestin interaction.

  3. Clean Energy Innovation: Sources of Technical and Commercial Breakthroughs

    Energy Technology Data Exchange (ETDEWEB)

    Perry, T. D., IV; Miller, M.; Fleming, L.; Younge, K.; Newcomb, J.

    2011-03-01

    Low-carbon energy innovation is essential to combat climate change, promote economic competitiveness, and achieve energy security. Using U.S. patent data and additional patent-relevant data collected from the Internet, we map the landscape of low-carbon energy innovation in the United States since 1975. We isolate 10,603 renewable and 10,442 traditional energy patents and develop a database that characterizes proxy measures for technical and commercial impact, as measured by patent citations and Web presence, respectively. Regression models and multivariate simulations are used to compare the social, institutional, and geographic drivers of breakthrough clean energy innovation. Results indicate statistically significant effects of social, institutional, and geographic variables on technical and commercial impacts of patents and unique innovation trends between different energy technologies. We observe important differences between patent citations and Web presence of licensed and unlicensed patents, indicating the potential utility of using screened Web hits as a measure of commercial importance. We offer hypotheses for these revealed differences and suggest a research agenda with which to test these hypotheses. These preliminary findings indicate that leveraging empirical insights to better target research expenditures would augment the speed and scale of innovation and deployment of clean energy technologies.

  4. Recent breakthroughs on C-2U: Norman’s legacy

    Energy Technology Data Exchange (ETDEWEB)

    Binderbauer, M. W.; Tajima, T.; Tuszewski, M.; Smirnov, A.; Gota, H.; Garate, E.; Barnes, D.; Deng, B. H.; Trask, E.; Yang, X.; Putvinski, S.; Andow, R.; Bolte, N.; Bui, D. Q.; Ceccherini, F.; Clary, R.; Cheung, A. H.; Conroy, K. D.; Dettrick, S. A.; Douglass, J. D. [Tri Alpha Energy, Inc., P.O. Box 7010, Rancho Santa Margarita, CA 92688 (United States); and others

    2016-03-25

    Conventional field-reversed configurations (FRC) face notable stability and confinement concerns, which can be ameliorated by introducing and maintaining a significant fast ion population in the system. This is the conjecture first introduced by Norman Rostoker multiple decades ago and adopted as the central design tenet in Tri Alpha Energy’s advanced beam driven FRC concept. In fact, studying the physics of such neutral beam (NB) driven FRCs over the past decade, considerable improvements were made in confinement and stability. Next to NB injection, the addition of axially streaming plasma guns, magnetic end plugs, as well as advanced surface conditioning lead to dramatic reductions in turbulence driven losses and greatly improved stability. In turn, fast ion confinement improved significantly and allowed for the build-up of a dominant fast particle population. This recently led to the breakthrough of sustaining an advanced beam driven FRC, thereby demonstrating successful maintenance of trapped magnetic flux, plasma dimensions and total pressure inventory for times much longer than all characteristic system time scales and only limited by hardware and electric supply constraints.

  5. Parameterizing the Spatial Markov Model From Breakthrough Curve Data Alone

    Science.gov (United States)

    Sherman, Thomas; Fakhari, Abbas; Miller, Savannah; Singha, Kamini; Bolster, Diogo

    2017-12-01

    The spatial Markov model (SMM) is an upscaled Lagrangian model that effectively captures anomalous transport across a diverse range of hydrologic systems. The distinct feature of the SMM relative to other random walk models is that successive steps are correlated. To date, with some notable exceptions, the model has primarily been applied to data from high-resolution numerical simulations and correlation effects have been measured from simulated particle trajectories. In real systems such knowledge is practically unattainable and the best one might hope for is breakthrough curves (BTCs) at successive downstream locations. We introduce a novel methodology to quantify velocity correlation from BTC data alone. By discretizing two measured BTCs into a set of arrival times and developing an inverse model, we estimate velocity correlation, thereby enabling parameterization of the SMM in studies where detailed Lagrangian velocity statistics are unavailable. The proposed methodology is applied to two synthetic numerical problems, where we measure all details and thus test the veracity of the approach by comparison of estimated parameters with known simulated values. Our results suggest that our estimated transition probabilities agree with simulated values and using the SMM with this estimated parameterization accurately predicts BTCs downstream. Our methodology naturally allows for estimates of uncertainty by calculating lower and upper bounds of velocity correlation, enabling prediction of a range of BTCs. The measured BTCs fall within the range of predicted BTCs. This novel method to parameterize the SMM from BTC data alone is quite parsimonious, thereby widening the SMM's practical applicability.

  6. Breakthrough characteristics of gas absorption in a packed column

    International Nuclear Information System (INIS)

    Shitanda, Shoji; Fukada, Satoshi; Koto, Kenji; Mitsuishi, Nobuo

    1979-01-01

    In nuclear industries, the operations to collect or recover various radioactive and non-radioactive gases with a number of absorption or adsorption reagents are practically utilized or planned. Specifically in the operations of recovering hydrogen isotopes, the direct collecting method with active metals such as uranium, zirconium (Zr) and yttrium is watched with keen interest. In this study, the capability of recovering hydrogen by means of Zr was investigated through the estimation of rate-determining step, by flowing the gas mixture of hydrogen and argon after activating metallic Zr under the condition of high temperature and high vacuum, and by determining overall mass transfer coefficient from the absorption breakthrough curves. The details of a packed column and the flowsheet are also described, and the deterioration of Zr powder is considered. That is, the diffusion speed and absorbing reaction speed of hydrogen in Zr particles are supposed to be slow and dominant in mass transfer speed. Further, since gas mixture does not simply diffuse in Zr particles, but the reaction plane seems to move toward the center from the surface in the case of Zr, different from general adsorbents, the moving speed seems to give large effect on the rate-determining step. It is ensured that the hydrogen absorption with Zr powder is so active that hydrogen in gas flow can easily be recovered, and its separation from other gases can be effectively carried out by the desorption of hydrogen from Zr powder by heating it in vacuum. (Wakatsuki, Y.)

  7. Funding breakthrough therapies: A systematic review and recommendation.

    Science.gov (United States)

    Hanna, E; Toumi, M; Dussart, C; Borissov, B; Dabbous, O; Badora, K; Auquier, P

    2018-03-01

    Advanced therapy medicinal products (ATMPs) are innovative therapies likely associated with high prices. Payers need guidance to create a balance between ensuring patient access to breakthrough therapies and maintaining the financial sustainability of the healthcare system. The aims of this study were to identify, define, classify and compare the approaches to funding high-cost medicines proposed in the literature, to analyze their appropriateness for ATMP funding and to suggest an optimal funding model for ATMPs. Forty-eight articles suggesting new funding models for innovative high-cost therapies were identified. The models were classified into 3 groups: financial agreement, health outcomes-based agreement and healthcoin. Financial agreement encompassed: discounts, rebates, price and volume caps, price-volume agreements, loans, cost-plus price, intellectual-based payment and fund-based payment. Health outcomes-based agreements were defined as agreements between manufacturers and payers based on drug performance, and were divided into performance-based payment and coverage with evidence development. Healthcoin described a new suggested tradeable currency used to assign monetary value to incremental outcomes. With a large number of ATMPs in development, it is time for stakeholders to start thinking about new pathways and funding strategies for these innovative high-cost therapies. An "ATMP-specific fund" may constitute a reasonable solution to ensure rapid patient access to innovation without threatening the sustainability of the health care system. Copyright © 2017 Elsevier B.V. All rights reserved.

  8. A European survey of oncology nurse breakthrough cancer pain practices.

    Science.gov (United States)

    Rustøen, Tone; Geerling, Jenske I; Pappa, Theodora; Rundström, Carina; Weisse, Isolde; Williams, Sian C; Zavratnik, Bostjan; Kongsgaard, Ulf E; Wengström, Yvonne

    2013-02-01

    Breakthrough cancer pain (BTCP) is a prevalent type of pain in which the nurse can play an important role in improving patients' pain symptoms and overall well-being. Nurses' experience with BTCP (number of patients, and estimates of severity and frequency), the treatment of BTCP (pharmacological and nonpharmacological treatments normally used), ratings of the importance of treatment factors, and reasons given for not advising patients to take strong painkillers are presented in the present paper. Nurses from 12 European countries, who cared for patients with cancer, took part in a survey. In total 1618 nurses were recruited and 1241 completed the survey questionnaire. Almost 90% of the nurses were female, and 50.4% had >9 years of experience in oncology nursing. The majority of the nurses (47%) said that a patient typically suffered from BTCP 2-3 times a day, and the severity of the pain for the patients was described as severe by 75.5%. In all, 38.4% of the nurses were unaware that medications specifically intended for treatment of BTCP exist, and 57% reported that oral opioids were normally prescribed for BTCP at their workplace. While 38% said they did not use nonpharmacological treatments for BTCP, the most common treatment approach was positional change (used by 76.6%). The treatment varied between the European countries. Patients do not receive the appropriate medical treatment for their BTCP. Nurses need better training about BTCP in general, and BTCP assessment and management specifically. Copyright © 2012 Elsevier Ltd. All rights reserved.

  9. Technical breakthroughs in the wearable artificial kidney (WAK).

    Science.gov (United States)

    Gura, Victor; Macy, Alexandra S; Beizai, Masoud; Ezon, Carlos; Golper, Thomas A

    2009-09-01

    The wearable artificial kidney (WAK) has been a holy grail in kidney failure for decades. Described herein are the breakthroughs that made possible the creation of the WAK V1.0 and its advanced versions V 1.1 and 1.2. The battery-powered WAK pump has a double channel pulsatile counter phase flow. This study clarifies the role of pulsatile blood and dialysate flow, a high-flux membrane with a larger surface area, and the optimization of the dialysate pH. Flows and clearances from the WAK pump were compared with conventional pumps and with gravity steady flow. Raising dialysate pH to 7.4 increased adsorption of ammonia. Clearances were higher with pulsatile flow as compared with steady flow. The light WAK pump, geometrically suitable for wearability, delivered the same clearances as larger and heavier pumps that cannot be battery operated. Beta(2) microglobulin (beta(2)M) was removed from human blood in vitro. Activated charcoal adsorbed most beta(2)M in the dialysate. The WAK V1.0 delivered an effective creatinine clearance of 18.5 +/- 3.2 ml/min and the WAK V1.1 27.0 +/- 4.0 ml/min in uremic pigs. Half-cycle differences between blood and dialysate, alternating transmembrane pressures (TMP), higher amplitude pulsations, and a push-pull flow increased convective transport. This creates a yet undescribed type of hemodiafiltration. Further improvements were achieved with a larger surface area high-flux dialyzer and a higher dialysate pH. The data suggest that the WAK might be an efficient way of providing daily dialysis and optimizing end stage renal disease (ESRD) treatment.

  10. Enabling Breakthrough Kinetic Simulations of the Magnetosphere Using Petascale Computing

    Science.gov (United States)

    Vu, H. X.; Karimabadi, H.; Omelchenko, Y.; Tatineni, M.; Majumdar, A.; Krauss-Varban, D.; Dorelli, J.

    2009-12-01

    Currently global magnetospheric simulations are predominantly based on single-fluid magnetohydrodynamics (MHD). MHD simulations have proven useful in studies of the global dynamics of the magnetosphere with the goal of predicting eminent features of substorms and other global events. But it is well known that the magnetosphere is dominated by ion kinetic effects, which is ignored in MHD simulations, and many key aspects of the magnetosphere relating to transport and structure of boundaries await global kinetic simulations. We are using our recent innovations in hybrid (electron fluid, kinetic ions) simulations, as being developed in our Hybrid3D (H3D) code, and the power of massively parallel machines to make, breakthrough 3D global kinetic simulations of the magnetosphere. The innovations include (i) multi-zone (asynchronous) algorithm, (ii) dynamic load balancing, and (iii) code adaptation and optimization to large number of processors. In this presentation we will show preliminary results of our progress to date using from 512 to over 8192 cores. In particular, we focus on what we believe to be the first demonstration of the formation of a flux rope in 3D global hybrid simulations. As in the MHD simulations, the resulting flux rope has a very complex structure, wrapping up field lines from different regions and appears to be connected on at least one end to Earth. Magnetic topology of the FTE is examined to reveal the existence of several separators (3D X-lines). The formation and growth of this structure will be discussed and spatial profile of the magnetic and plasma variables will be compared with those from MHD simulations.

  11. Breakthrough cancer pain: twenty-five years of study.

    Science.gov (United States)

    Mercadante, Sebastiano; Portenoy, Russell K

    2016-12-01

    Breakthrough cancer pain (BTcP) is an episode of severe pain that "breaks through" a period of persistent pain at least partly controlled by a stable opioid regimen. Although mentioned in the literature decades ago, it has been only 25 years since the first effort to define and measure it. Controversy about the definition of BTcP continues despite an international effort to achieve consensus. Nevertheless, common approaches to measurement of BTcP have led to a robust literature, including many surveys that have described prevalence, characteristics, and association with adverse outcomes. Measurement also has been important for clinical trials of new drug formulations specifically designed for BTcP. Several approaches have been reported in the literature, although most of them have never been substantiated with appropriate studies. Administration of an opioid as needed is the most common treatment. Twenty-five years of research has produced a more refined understanding of the safety and efficacy of oral opioids in this context, and provided the clinical trials data necessary to attain regulatory approval of multiple new formulations specifically developed for BTcP. Transmucosal formulations of fentanyl may provide meaningful analgesia within 5 to 15 minutes. Given the difference in cost, transmucosal formulations should be considered in a subset of patients with BTcP, including those with pain that are not adequately controlled with an oral drug and those with distress associated with the rapid pain onset. The long-term use of opioids for BTcP remains to be clarified. Future studies should assess the potential of personalized treatment of BTcP.

  12. [Future directions of neurology - breakthrough to the next stage ].

    Science.gov (United States)

    Tsuji, Shoji

    2010-11-01

    The 51st Annual Meeting of the Japanese Society of Neurology was held in Tokyo (Tokyo International Forum) from Thursday, May 20 to Saturday, May 22, 2010 with as many as 5,471 attendants. Our Society has been celebrating its 50th anniversary during the period from 2009 through 2010. At the 51st Annual Meeting in 2010, we looked toward the future, as we celebrate our 50th anniversary together with distinguished guests closely related to our Society. The theme for the 51st Annual Meeting was set as "Future of Neurology-Breakthrough to the next stage-." As represented in the theme, I hope that the Annual Meeting provided an excellent opportunity for all of us to look ahead to the future of Neurology and our Society in the next half-century. We have achieved tremendous advances in better understanding neurological diseases and developing more efficacious treatment over the last half century. Great strides have been made in all areas, of which diagnostic imaging, molecular genetics, immunology and physiology are just a few examples, and understanding of diseases has similarly taken a great leap forward. In Japan, the aging of society coupled with the declining birthrate has placed ever-increasing expectations on neurologists to provide better care for dementia, cerebrovascular disorders and neurodegenerative diseases. Given this situation our Society is required to provide outstanding education in both the pre- and post-graduate context, and, furthermore, to ensure that excellent training programs are available for young neurologists preparing for Board certification. Looking towards the future of neurology, we should continue to anticipate new, ground-breaking achievements for better understanding neurological diseases and establishing more effective treatment through our ongoing endeavors.

  13. Risk Factors for Breakthrough Pneumocystis carinii Pneumonia on Aerosol Pentamidine Prophylaxis

    Directory of Open Access Journals (Sweden)

    RA McIvor

    1995-01-01

    Full Text Available OBJECTIVE: To identify baseline characteristics of human immunodeficiency virus (HIV-infected individuals on aerosol pentamidine for Pneumocystis carinii prophylaxis that are predictive of subsequent breakthrough Pneumocystis carinii pneumonia (PCP.

  14. Breakthroughs in Medicinal Chemistry: New Targets and Mechanisms, New Drugs, New Hopes–2

    Directory of Open Access Journals (Sweden)

    Diego Muñoz-Torrero

    2017-12-01

    Full Text Available Breakthroughs in Medicinal Chemistry: New Targets and Mechanisms, New Drugs, New Hopes is a series of Editorials, which are published on a biannual basis by the Editorial Board of the Medicinal Chemistry section of the journal Molecules [...

  15. Breakthrough disease during interferon-[beta] therapy in MS: No signs of impaired biologic response

    DEFF Research Database (Denmark)

    Hesse, D; Krakauer, M; Lund, H

    2010-01-01

    Disease activity is highly variable in patients with multiple sclerosis (MS), both untreated and during interferon (IFN)-beta therapy. Breakthrough disease is often regarded as treatment failure; however, apart from neutralizing antibodies (NAbs), no blood biomarkers have been established...... as reliable indicators of treatment response, despite substantial, biologically measurable effects. We studied the biologic response to treatment in a cohort of NAb-negative patients to test whether difference in responsiveness could segregate patients with and without breakthrough disease during therapy....

  16. Statistical characteristics of breakthrough discoveries in science using the metaphor of black and white swans

    Science.gov (United States)

    Zeng, Carl J.; Qi, Eric P.; Li, Simon S.; Stanley, H. Eugene; Ye, Fred Y.

    2017-12-01

    A publication that reports a breakthrough discovery in a particular scientific field is referred to as a ;black swan;, and the most highly-cited papers previously published in the same field ;white swans;. Important scientific progress occurs when ;white swans; meet a ;black swan;, and the citation patterns of the ;white swans; change. This metaphor combines scientific discoveries and scientometric data and suggests that breakthrough scientific discoveries are either ;black swans; or ;grey-black swans;.

  17. Treatment of Breakthrough and Refractory Chemotherapy-Induced Nausea and Vomiting

    OpenAIRE

    Navari, Rudolph M.

    2015-01-01

    Despite significant progress in the prevention of chemotherapy-induced nausea and vomiting (CINV) with the introduction of new antiemetic agents, 30–50% of patients receiving moderately or highly emetogenic chemotherapy (MEC or HEC) and guideline directed prophylactic antiemetics develop breakthrough CINV. International guidelines recommend the treatment of breakthrough CINV with an agent from a drug class that was not used in the prophylactic antiemetic regimen and recommend using the breakt...

  18. The management of breakthrough cancer pain--educational needs a European nursing survey.

    Science.gov (United States)

    Wengström, Y; Rundström, C; Geerling, J; Pappa, T; Weisse, I; Williams, S C; Zavratnik, B; Rustøen, T

    2014-01-01

    Poorly managed cancer pain is well known to profoundly impact the patient's daily life and interfere with quality of life. Nurses who cared for patients with cancer from 12 European countries participated in a survey of breakthrough cancer pain practice. The purpose was to investigate how nurses assess breakthrough cancer pain, use of standardised tools, confidence in supporting patients and awareness of medications. Responses from 1241 participants showed country variations. The majority of the sample was female, Germany had the highest proportion of male nurses (21.0%), followed by Greece (15.8%). A significantly larger proportion of nurses with longer experience and more education (78.8%) used a comprehensive definition of breakthrough cancer pain. Significant variations in training were found; 71% of Finnish nurses had received training compared with 6% of Greek nurses. Training and using a standardised assessment tool was associated with a significant increase in the nurses' perceived ability to distinguish between breakthrough and background pain. Nurses in countries with the highest proportion of training were most confident in supporting patients. In conclusion, there still exists problems with effective management of patients' breakthrough cancer pain, continuing inability to define the difference between background and breakthrough cancer pain leads to poor treatment. © 2013 John Wiley & Sons Ltd.

  19. Prediction of ion-exchange column breakthrough curves by constant-pattern wave approach.

    Science.gov (United States)

    Lee, I-Hsien; Kuan, Yu-Chung; Chern, Jia-Ming

    2008-03-21

    The release of heavy metals from industrial wastewaters represents one of major threats to environment. Compared with chemical precipitation method, fixed-bed ion-exchange process can effectively remove heavy metals from wastewaters and generate no hazardous sludge. In order to design and operate fixed-bed ion-exchange processes successfully, it is very important to understand the column dynamics. In this study, the column experiments for Cu2+/H+, Zn2+/H+, and Cd2+/H+ systems using Amberlite IR-120 were performed to measure the breakthrough curves under varying operating conditions. The experimental results showed that total cation concentration in the mobile-phase played a key role on the breakthrough curves; a higher feed concentration resulted in an earlier breakthrough. Furthermore, the column dynamics was also predicted by self-sharpening and constant-pattern wave models. The self-sharpening wave model assuming local ion-exchange equilibrium could provide a simple and quick estimation for the breakthrough volume, but the predicted breakthrough curves did not match the experimental data very well. On the contrary, the constant-pattern wave model using a constant driving force model for finite ion-exchange rate provided a better fit to the experimental data. The obtained liquid-phase mass transfer coefficient was correlated to the flow velocity and other operating parameters; the breakthrough curves under varying operating conditions could thus be predicted by the constant-pattern wave model using the correlation.

  20. Top ranking fashion blogs and their role in the current fashion industry

    NARCIS (Netherlands)

    K. Sedeke (Kristina); P.A. Arora (Payal)

    2013-01-01

    textabstractSocial media is a digital platform with a wide impact on personal as well as business communication. A communication model where the addresser sends messages to receivers has been taken over predominantly by a new dynamic model where all participants have the opportunity to actively

  1. Animal-Assisted Activities: Results From a Survey of Top-Ranked Pediatric Oncology Hospitals.

    Science.gov (United States)

    Chubak, Jessica; Hawkes, Rene

    2016-07-01

    Animal-assisted activities (AAA) are increasingly common, yet little is known about practices in pediatric oncology. To address this gap, we surveyed the top 20 pediatric oncology hospitals in the United States in May and June of 2014. Questionnaires were sent via e-mail and generally returned by e-mail or postal mail. Among the 19 responding hospitals, the 18 that offered AAA to pediatric patients formed the basis of our analysis. All sites had written AAA policies. Most programs were restricted to dogs. At 11 hospitals, children with cancer could participate in AAA activities. Outpatient waiting rooms and individual inpatient rooms were the most common locations for AAA with pediatric oncology patients. Safety precautions varied by hospital, but all required hand sanitation after visits and that animals receive an annual health examination, be on a leash or in a carrier, be ≥1 year old, and not be directly from a shelter. Our findings reveal consistencies and variations in practice that may help other hospitals develop their own programs and researchers identify areas of future study. © 2015 by Association of Pediatric Hematology/Oncology Nurses.

  2. PREFACE: Inverse Problems in Applied Sciences—towards breakthrough

    Science.gov (United States)

    Cheng, Jin; Iso, Yuusuke; Nakamura, Gen; Yamamoto, Masahiro

    2007-06-01

    These are the proceedings of the international conference `Inverse Problems in Applied Sciences—towards breakthrough' which was held at Hokkaido University, Sapporo, Japan on 3-7 July 2006 (http://coe.math.sci.hokudai.ac.jp/sympo/inverse/). There were 88 presentations and more than 100 participants, and we are proud to say that the conference was very successful. Nowadays, many new activities on inverse problems are flourishing at many centers of research around the world, and the conference has successfully gathered a world-wide variety of researchers. We believe that this volume contains not only main papers, but also conveys the general status of current research into inverse problems. This conference was the third biennial international conference on inverse problems, the core of which is the Pan-Pacific Asian area. The purpose of this series of conferences is to establish and develop constant international collaboration, especially among the Pan-Pacific Asian countries, and to lead the organization of activities concerning inverse problems centered in East Asia. The first conference was held at City University of Hong Kong in January 2002 and the second was held at Fudan University in June 2004. Following the preceding two successes, the third conference was organized in order to extend the scope of activities and build useful bridges to the next conference in Seoul in 2008. Therefore this third biennial conference was intended not only to establish collaboration and links between researchers in Asia and leading researchers worldwide in inverse problems but also to nurture interdisciplinary collaboration in theoretical fields such as mathematics, applied fields and evolving aspects of inverse problems. For these purposes, we organized tutorial lectures, serial lectures and a panel discussion as well as conference research presentations. This volume contains three lecture notes from the tutorial and serial lectures, and 22 papers. Especially at this

  3. Predicting the Risk of Breakthrough Urinary Tract Infections: Primary Vesicoureteral Reflux.

    Science.gov (United States)

    Hidas, Guy; Billimek, John; Nam, Alexander; Soltani, Tandis; Kelly, Maryellen S; Selby, Blake; Dorgalli, Crystal; Wehbi, Elias; McAleer, Irene; McLorie, Gordon; Greenfield, Sheldon; Kaplan, Sherrie H; Khoury, Antoine E

    2015-11-01

    We constructed a risk prediction instrument stratifying patients with primary vesicoureteral reflux into groups according to their 2-year probability of breakthrough urinary tract infection. Demographic and clinical information was retrospectively collected in children diagnosed with primary vesicoureteral reflux and followed for 2 years. Bivariate and binary logistic regression analyses were performed to identify factors associated with breakthrough urinary tract infection. The final regression model was used to compute an estimation of the 2-year probability of breakthrough urinary tract infection for each subject. Accuracy of the binary classifier for breakthrough urinary tract infection was evaluated using receiver operator curve analysis. Three distinct risk groups were identified. The model was then validated in a prospective cohort. A total of 252 bivariate analyses showed that high grade (IV or V) vesicoureteral reflux (OR 9.4, 95% CI 3.8-23.5, p urinary tract infection (OR 5.3, 95% CI 1.1-24.7, p = 0.034) and female gender (OR 2.6, 95% CI 0.097-7.11, p urinary tract infection. Subgroup analysis revealed bladder and bowel dysfunction was a significant risk factor more pronounced in low grade (I to III) vesicoureteral reflux (OR 2.8, p = 0.018). The estimation model was applied for prospective validation, which demonstrated predicted vs actual 2-year breakthrough urinary tract infection rates of 19% vs 21%. Stratifying the patients into 3 risk groups based on parameters in the risk model showed 2-year risk for breakthrough urinary tract infection was 8.6%, 26.0% and 62.5% in the low, intermediate and high risk groups, respectively. This proposed risk stratification and probability model allows prediction of 2-year risk of patient breakthrough urinary tract infection to better inform parents of possible outcomes and treatment strategies. Copyright © 2015 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights

  4. Alternative sample-introduction technique to avoid breakthrough in gradient-elution liquid chromatography of polymers.

    Science.gov (United States)

    Reingruber, Eva; Bedani, Filippo; Buchberger, Wolfgang; Schoenmakers, Peter

    2010-10-15

    Gradient-elution liquid chromatography (GELC) is a powerful tool for the characterization of synthetic polymers. However, gradient-elution chromatograms often suffer from breakthrough phenomena. Breakthrough can be averted by using a sample solvent as weak as the mobile phase. However, this approach is only applicable to polymers for which a sufficiently strong solvent exists which is at the same time a weak eluent. Finding such a solvent for a given polymer can be laborious or may even be impossible. Besides, when working with comprehensive two-dimensional LC the effluent of the first dimension is the injection solvent of the second dimension. In this case, it is not possible to avoid breakthrough by adjusting the eluent strength of the second-dimension injection solvent. Therefore, another strategy to avert breakthrough has to be implemented. In this work, we successfully avoided breakthrough in GELC by mixing the mobile phase not before, but after the autosampler. This was demonstrated measuring a blend of poly(methyl methacrylate) standards with different molecular-weights as model mixture with comprehensive two-dimensional GELC×size-exclusion chromatography. The strategy is thought to be applicable to all substances with a sufficiently strong dependence of retention on mobile-phase composition. This typically applies to large molecules (synthetic and natural polymers) and allows efficient refocusing. Unretained and barely retained substances are not refocused and therefore suffer in the proposed setup from peak broadening. Copyright © 2010 Elsevier B.V. All rights reserved.

  5. Treatment of Breakthrough and Refractory Chemotherapy-Induced Nausea and Vomiting

    Science.gov (United States)

    Navari, Rudolph M.

    2015-01-01

    Despite significant progress in the prevention of chemotherapy-induced nausea and vomiting (CINV) with the introduction of new antiemetic agents, 30–50% of patients receiving moderately or highly emetogenic chemotherapy (MEC or HEC) and guideline directed prophylactic antiemetics develop breakthrough CINV. International guidelines recommend the treatment of breakthrough CINV with an agent from a drug class that was not used in the prophylactic antiemetic regimen and recommend using the breakthrough medication continuously rather than using it on an as needed basis. There have been very few studies on the treatment of breakthrough CINV. A recent double-blind, randomized, phase III study suggested that olanzapine may be an effective agent for the treatment of breakthrough CINV. Refractory CINV occurs when patients develop CINV during subsequent cycles of chemotherapy when antiemetic prophylaxis has not been successful in controlling CINV in earlier cycles. Patients who develop refractory CINV should be considered for a change in their prophylactic antiemetic regimen. If significant anxiety exists, a benzodiazepine may be added to the prophylactic regimen. If a refractory patient is receiving HEC, olanzapine may be added to the prophylactic regimen. If the patient is receiving MEC, olanzapine or an NK-1 receptor antagonist may be added to the prophylactic regimen. PMID:26421294

  6. Treatment of Breakthrough and Refractory Chemotherapy-Induced Nausea and Vomiting

    Directory of Open Access Journals (Sweden)

    Rudolph M. Navari

    2015-01-01

    Full Text Available Despite significant progress in the prevention of chemotherapy-induced nausea and vomiting (CINV with the introduction of new antiemetic agents, 30–50% of patients receiving moderately or highly emetogenic chemotherapy (MEC or HEC and guideline directed prophylactic antiemetics develop breakthrough CINV. International guidelines recommend the treatment of breakthrough CINV with an agent from a drug class that was not used in the prophylactic antiemetic regimen and recommend using the breakthrough medication continuously rather than using it on an as needed basis. There have been very few studies on the treatment of breakthrough CINV. A recent double-blind, randomized, phase III study suggested that olanzapine may be an effective agent for the treatment of breakthrough CINV. Refractory CINV occurs when patients develop CINV during subsequent cycles of chemotherapy when antiemetic prophylaxis has not been successful in controlling CINV in earlier cycles. Patients who develop refractory CINV should be considered for a change in their prophylactic antiemetic regimen. If significant anxiety exists, a benzodiazepine may be added to the prophylactic regimen. If a refractory patient is receiving HEC, olanzapine may be added to the prophylactic regimen. If the patient is receiving MEC, olanzapine or an NK-1 receptor antagonist may be added to the prophylactic regimen.

  7. How do nurses in specialist palliative care assess and manage breakthrough cancer pain? A multicentre study.

    Science.gov (United States)

    Soden, Katie; Ali, Simone; Alloway, Lara; Barclay, David; Barker, Stephanie; Bird, Lydia; Hall, Lesley; Perkins, Paul

    2013-11-01

    To gain a better understanding of how registered nurses working in specialist palliative care assess and manage breakthrough cancer pain. A mixed-methodology study was undertaken in two stages-this paper reports findings from stage two. Anonymous postal questionnaires, designed based on themes identified in interviews undertaken during stage one, were sent to trained nurses working in ten specialist palliative care services in England. A total of 104 questionnaires were returned. Respondents were experienced nurses mainly working in inpatient settings. Some 82% of the nurses wanted more training on the assessment of breakthrough cancer pain. Although there were inconsistencies around the use of terminology, pain management appeared to be good. The use of terminology in the field of breakthrough cancer pain remains variable. However, this does not appear to have a negative impact on patient management, which was broadly in line with recently published consensus recommendations. There is a desire for more education within this area of practice.

  8. Breakthrough properties of chloride ions in columns of lead phosphate hydroxide

    International Nuclear Information System (INIS)

    Akiba, Kenichi; Hashimoto, Hiroyuki; Mimura, Hitoshi; Shindo, Manabu.

    1994-01-01

    Breakthrough properties of chloride ion (Cl - ) have been studied by using columns packed with a granular anion-exchanger of lead phosphate hydroxide (Pb 10 (PO 4 ) 6 (OH) 2 , IXE-1000G). The column utilization of the ratio of breakthrough capacity to total capacity increased with decreasing particle size and increasing temperature. The collection of Cl - from a simulated waste solution was improved by the addition of cation-exchange to IXE-1000G; the adsorption capacity of the column of IXE-1000G/IXE-300G (Sb type cation-exchanger) was over 0.16 mmol Cl - /g, yielding a relatively high column utilization of 75%. (author)

  9. Coupling gravity, electromagnetism and space-time for space propulsion breakthroughs

    Science.gov (United States)

    Millis, Marc G.

    1994-01-01

    spaceflight would be revolutionized if it were possible to propel a spacecraft without rockets using the coupling between gravity, electromagnetism, and space-time (hence called 'space coupling propulsion'). New theories and observations about the properties of space are emerging which offer new approaches to consider this breakthrough possibility. To guide the search, evaluation, and application of these emerging possibilities, a variety of hypothetical space coupling propulsion mechanisms are presented to highlight the issues that would have to be satisfied to enable such breakthroughs. A brief introduction of the emerging opportunities is also presented.

  10. Breakthrough disease during interferon-[beta] therapy in MS: No signs of impaired biologic response

    DEFF Research Database (Denmark)

    Hesse, D; Krakauer, M; Lund, H

    2010-01-01

    as reliable indicators of treatment response, despite substantial, biologically measurable effects. We studied the biologic response to treatment in a cohort of NAb-negative patients to test whether difference in responsiveness could segregate patients with and without breakthrough disease during therapy....

  11. Creative Management as a Strategy for Breakthrough Innovation. Lessons from Basic Research Projects of Japanese Companies.

    Science.gov (United States)

    Lee, K. T.

    1997-01-01

    Japanese science/technology policies emphasize creative research management for strengthening breakthrough innovation. Key lessons include the following: cultivation of creative researchers, clear strategic directions, systematic teamwork and collaboration, focus on strategic industrial relevance, balance between autonomy and control, and the need…

  12. The breakthrough curve combination for xenon sampling dynamics in a carbon molecular sieve column.

    Science.gov (United States)

    Shu-jiang, Liu; Zhan-ying, Chen; Yin-zhong, Chang; Shi-lian, Wang; Qi, Li; Yuan-qing, Fan; Huai-mao, Jia; Xin-jun, Zhang; Yun-gang, Zhao

    2015-01-21

    In the research of xenon sampling and xenon measurements, the xenon breakthrough curve plays a significant role in the xenon concentrating dynamics. In order to improve the theoretical comprehension of the xenon concentrating procedure from the atmosphere, the method of the breakthrough curve combination for sampling techniques should be developed and investigated under pulse injection conditions. In this paper, we describe a xenon breakthrough curve in a carbon molecular sieve column, the combination curve method for five conditions is shown and debated in detail; the fitting curves and the prediction equations are derived in theory and verified by the designed experiments. As a consequence, the curves of the derived equations are in good agreement with the fitting curves by tested. The retention times of the xenon in the column are 61.2, 42.2 and 23.5 at the flow rate of 1200, 1600 and 2000 mL min(-1), respectively, but the breakthrough times are 51.4, 38.6 and 35.1 min.

  13. Chemokine receptors and their crucial role in human immunodeficiency virus infection: major breakthroughs in HIV research

    DEFF Research Database (Denmark)

    Kristiansen, T B; Knudsen, T B; Eugen-Olsen, J

    1998-01-01

    to a series of breakthroughs in HIV research and knowledge. These include an increased understanding of viral entry, a connection of viral phenotype to specific coreceptor use, and an unequivocal linkage of a single human gene to host susceptibility. All in all these achievements provide a number of promising...... new strategies for combating HIV....

  14. Behind "AIDS breakthrough" headlines, December 2004: important research, not so new.

    Science.gov (United States)

    James, John S

    2004-01-01

    The mid-December press reports about an AIDS drug breakthrough were exaggerated, but the research described is important. It concerns the development of a class of related experimental drugs that work like efavirenz or nevirapine, but appear to be more powerful and much less subject to resistance.

  15. FRB 121102: Detection at 4 - 8 GHz band with Breakthrough Listen backend at Green Bank

    Science.gov (United States)

    Gajjar, Vishal,; Siemion, Andrew P. V.; MacMahon, David H. E.; Croft, Steve; Hellbourg, Gregory; Isaacson, Howard; Enriquez, J. Emilio; Price, Danny C.; Lebofsky, Matthew; DeBoer, David; Werthimer, Dan; Hickish, Jack; Brinkman, Casey; Chatterjee, Shami; Ransom, Scott

    2017-08-01

    On Saturday, August 26 at 13:51:44 UTC we initiated observations of the well-known repeating fast radio burst FRB 121102 [Spitler et al., Nature, 531, 7593 202-205, 2016] using the Breakthrough Listen Digital Backend with the C-band receiver at the Green Bank Telescope.

  16. Distal Ureteral Diameter Ratio is Predictive of Breakthrough Febrile Urinary Tract Infection.

    Science.gov (United States)

    Arlen, Angela M; Leong, Traci; Guidos, P Joseph; Alexander, Siobhan E; Cooper, Christopher S

    2017-12-01

    Distal ureteral diameter ratio is an objective measure that is prognostic of spontaneous resolution of vesicoureteral reflux. Along with likelihood of resolution, improved identification of children at risk for recurrent febrile urinary tract infections may impact management decisions. We evaluated the usefulness of ureteral diameter ratio as a predictive factor for breakthrough febrile urinary tract infections. Children with primary vesicoureteral reflux and detailed voiding cystourethrogram were identified. Ureteral diameter ratio was computed by measuring largest ureteral diameter within the pelvis and dividing by the distance between L1 and L3 vertebral bodies. Demographics, vesicoureteral reflux grade, laterality, presence/absence of bladder-bowel dysfunction, and ureteral diameter ratio were tested in univariate and multivariable analyses. Primary outcome was breakthrough febrile urinary tract infections. We analyzed 112 girls and 28 boys with a mean ± SD age of 2.5 ± 2.3 years at diagnosis. Vesicoureteral reflux was grade 1 to 2 in 64 patients (45.7%), grade 3 in 50 (35.7%), grade 4 in 16 (11.4%) and grade 5 in 10 (7.2%). Mean ± SD followup was 3.2 ± 2.7 years. A total of 40 children (28.6%) experienced breakthrough febrile urinary tract infections. Ureteral diameter ratio was significantly greater in children with (0.36) vs without (0.25) breakthrough febrile infections (p = 0.004). Controlling for vesicoureteral reflux grade, every 0.1 U increase in ureteral diameter ratio resulted in 1.7 times increased odds of breakthrough infection (95% CI 1.24 to 2.26, p urinary tract infections independent of reflux grade. Ureteral diameter ratio provides valuable prognostic information about risk of recurrent pyelonephritis and may assist with clinical decision-making. Copyright © 2017 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved.

  17. Gas breakthrough and emission through unsaturated compacted clay in landfill final cover

    International Nuclear Information System (INIS)

    Ng, C.W.W.; Chen, Z.K.; Coo, J.L.; Chen, R.; Zhou, C.

    2015-01-01

    Highlights: • Explore feasibility of unsaturated clay as a gas barrier in landfill cover. • Gas breakthrough pressure increases with clay thickness and degree of saturation. • Gas emission rate decreases with clay thickness and degree of saturation. • A 0.6 m-thick clay layer may be sufficient to meet gas emission rate limit. - Abstract: Determination of gas transport parameters in compacted clay plays a vital role for evaluating the effectiveness of soil barriers. The gas breakthrough pressure has been widely studied for saturated swelling clay buffer commonly used in high-level radioactive waste disposal facility where the generated gas pressure is very high (in the order of MPa). However, compacted clay in landfill cover is usually unsaturated and the generated landfill gas pressure is normally low (typically less than 10 kPa). Furthermore, effects of clay thickness and degree of saturation on gas breakthrough and emission rate in the context of unsaturated landfill cover has not been quantitatively investigated in previous studies. The feasibility of using unsaturated compacted clay as gas barrier in landfill covers is thus worthwhile to be explored over a wide range of landfill gas pressures under various degrees of saturation and clay thicknesses. In this study, to evaluate the effectiveness of unsaturated compacted clay to minimize gas emission, one-dimensional soil column tests were carried out on unsaturated compacted clay to determine gas breakthrough pressures at ultimate limit state (high pressure range) and gas emission rates at serviceability limit state (low pressure range). Various degrees of saturation and thicknesses of unsaturated clay sample were considered. Moreover, numerical simulations were carried out using a coupled gas–water flow finite element program (CODE-BRIGHT) to better understand the experimental results by extending the clay thickness and varying the degree of saturation to a broader range that is typical at different

  18. Breakthrough on technical and vocational education of Taiwan: Take Oriental Institute of Technology as an example

    Science.gov (United States)

    Chang, Horng-jinh; Wang, Whe-min

    2017-06-01

    Taiwan's economic strength has changed drastically in the past decade because of political and economic reasons; however, in order to cope with international environment, higher education must increase its breakthrough to meet the needs of enterprises. School curriculum also has to be timely changes and adjustments. This study will analyze school learning in several directions, use questionnaire to investigate students' learning stress, to find out where students' pressure lie. Also, outsourcing employers' satisfaction survey to find out what do enterprises wants to solve with the drop problem between school and enterprise. Taking Oriental Institute of Technology (OIT) as an example; over the past ten years, OIT has used overseas internships to help students overcome learning difficulties. Overseas practice courses include Penang Malaysia and Suzhou China had gained tremendous breakthrough.

  19. Heat Sweep Analysis of Thermal Breakthrough at Los Humeros and La Primavera Fields, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Kruger, P.; Lam, S.; Molinar, R.; Aragon, A.

    1987-01-20

    Early evaluation of the potential for geothermal breakthrough of reinjected fluids in newly developed geothermal fields can be obtained with the SGP one-dimensional heat sweep model. The model was used to estimate fluid cooldown from wells selected for the first wellhead generating units to be installed at the Los Humeros and La Primavera geothermal fields in Mexico, based on staff-compiled geometric and geologic data, thermal properties of the reservoir rock, and expected production conditions. Geometric considerations were evaluated with respect to known and postulated fault zones and return flow angle of the reinjected fluid. The results show the range of parameter values that affect the rate of thermal breakthrough to an abandonment temperature of 170 ºC corresponding to the minimum inlet pressure to the CFE 5-MW wellhead generator units. 9 figs., 4 tabs., 11 refs.

  20. Breakthrough of toluene vapours in granular activated carbon filled packed bed reactor

    International Nuclear Information System (INIS)

    Mohan, N.; Kannan, G.K.; Upendra, S.; Subha, R.; Kumar, N.S.

    2009-01-01

    The objective of this research was to determine the toluene removal efficiency and breakthrough time using commercially available coconut shell-based granular activated carbon in packed bed reactor. To study the effect of toluene removal and break point time of the granular activated carbon (GAC), the parameters studied were bed lengths (2, 3, and 4 cm), concentrations (5, 10, and 15 mg l -1 ) and flow rates (20, 40, and 60 ml/min). The maximum percentage removal of 90% was achieved and the maximum carbon capacity for 5 mg l -1 of toluene, 60 ml/min flow rate and 3 cm bed length shows 607.14 mg/g. The results of dynamic adsorption in a packed bed were consistent with those of equilibrium adsorption by gravimetric method. The breakthrough time and quantity shows that GAC with appropriate surface area can be utilized for air cleaning filters. The result shows that the physisorption plays main role in toluene removal.

  1. Breakthrough attacks in patients with hereditary angioedema receiving long-term prophylaxis are responsive to icatibant

    DEFF Research Database (Denmark)

    Aberer, Werner; Maurer, Marcus; Bouillet, Laurence

    2017-01-01

    BACKGROUND: Patients with hereditary angioedema (HAE) due to C1-inhibitor deficiency (C1-INH-HAE) experience recurrent attacks of cutaneous or submucosal edema that may be frequent and severe; prophylactic treatments can be prescribed to prevent attacks. However, despite the use of long......-term prophylaxis (LTP), breakthrough attacks are known to occur. We used data from the Icatibant Outcome Survey (IOS) to evaluate the characteristics of breakthrough attacks and the effectiveness of icatibant as a treatment option. METHODS: Data on LTP use, attacks, and treatments were recorded. Attack...... characteristics, treatment characteristics, and outcomes (time to treatment, time to resolution, and duration of attack) were compared for attacks that occurred with versus without LTP. RESULTS: Data on 3228 icatibant-treated attacks from 448 patients with C1-INH-HAE were analyzed; 30.1% of attacks occurred while...

  2. Electrical breakthrough effect for end pointing in 90 and 45 nm node circuit edit

    International Nuclear Information System (INIS)

    Liu, Kun; Soskov, Alex; Scipioni, Larry; Bassom, Neil; Sijbrandij, Sybren; Smith, Gerald

    2006-01-01

    The interaction between high-energy Ga + ions and condensed matter is studied for circuit edit applications. A new 'electrical breakthrough effect' due to charging of, and Ga + penetration/doping into, dielectrics is discovered. This new effect is proposed for end pointing in 90 and 45 nm node circuit edits where integrated circuit device dimensions are of a few hundred nanometers. This new end point approach is very sensitive, reliable, and precise. Most importantly, it is not sensitive to device dimensions. A series of circuit edits involving milling holes of high aspect ratio (5-30) and small cross-section area (0.01-0.25 μm 2 ) on real chips has been successfully performed using the electrical breakthrough effect as the end point method

  3. Ordovician gas exploration breakthrough in the Gucheng lower uplift of the Tarim Basin and its enlightenment

    Directory of Open Access Journals (Sweden)

    Wang Zhaoming

    2014-10-01

    Full Text Available A steady high yield natural gas flow was tapped in the Ordovician strata of Well Gucheng 6 drilled in the Gucheng lower uplift in the Tarim Basin in 2012, marking the discovery of another carbonate gas exploration field after the other two fields in the middle and northern Tarim Basin (the so called Tazhong and Tabei in the industry. The exploration in the Gucheng lower uplift has experienced three stages: the first stage, marine facies clastic exploration from 1995 to 2003, focusing on the Devonian Donghe sandstone lithologic traps, the Silurian overlapping lithologic traps, and the Upper Ordovician shelf slope turbidites; the second stage focusing on the reef shoal carbonate reservoirs from 2003 to 2006, during which oil and gas were first discovered in Well Gucheng 4; the third stage can be divided into two periods, in the first period, deeper insight into interbed karstification reservoir exploration, intense research on tricky seismic issues, selection of favorable zones, and 3D seismic deployment in advance laid a robust foundation for breakthroughs in oil and gas exploration; and during 2009–2012, through an in-depth investigation, Well Gucheng 6 was drilled, bringing about the major breakthrough in oil and gas exploration in this study area. This success proves that the Lower Paleozoic carbonate rocks in the Gucheng area have good geological conditions and broad prospect for oil and gas exploration, which give us enlightenment in three aspects: a. new insight into geologic understanding is the prerequisite of exploration breakthrough; b. addressing bottleneck technologies, and acquiring 3D seismic data are the guarantees of exploration breakthrough; and c. emancipation of mind and persistent exploration are key to the findings in new domains.

  4. Developing technology pushed breakthroughs:defining and assessing success factors in ICT industry

    OpenAIRE

    Sarja, J. (Jari)

    2016-01-01

    Abstract The main task for most development-intensive organisations is to create, develop and commercialise new products and services. The technology push (TP) concept is considered an important competitive advantage for companies trying to create breakthrough products. Because development processes are risky and failure rates are high, especially in the case of technology pushed projects, defined success factors are valuable knowledge for the management of development-intensive firms. ...

  5. The reading-science learning-writing connection: Breakthroughs, barriers, and promises

    Science.gov (United States)

    Holliday, William G.; Yore, Larry D.; Alvermann, Donna E.

    This article establishes a broad framework from which to interpret and evaluate the reading-science learning-writing connection. The presentation of breakthroughs, barriers, and promises is intended to outline the established links between, to identify current bottlenecks in thinking about, and to highlight productive inquiries into, print-based languages and scientific understanding. The ideas presented come from various disciplines connected to science education. The ideas are meant to be informative, provocative, integrative, supportive, and without hidden agenda.

  6. The Effect of Velocity Correlation on the Spatial Evolution of Breakthrough Curves in Heterogeneous Media

    Science.gov (United States)

    Massoudieh, A.; Dentz, M.; Le Borgne, T.

    2017-12-01

    In heterogeneous media, the velocity distribution and the spatial correlation structure of velocity for solute particles determine the breakthrough curves and how they evolve as one moves away from the solute source. The ability to predict such evolution can help relating the spatio-statistical hydraulic properties of the media to the transport behavior and travel time distributions. While commonly used non-local transport models such as anomalous dispersion and classical continuous time random walk (CTRW) can reproduce breakthrough curve successfully by adjusting the model parameter values, they lack the ability to relate model parameters to the spatio-statistical properties of the media. This in turns limits the transferability of these models. In the research to be presented, we express concentration or flux of solutes as a distribution over their velocity. We then derive an integrodifferential equation that governs the evolution of the particle distribution over velocity at given times and locations for a particle ensemble, based on a presumed velocity correlation structure and an ergodic cross-sectional velocity distribution. This way, the spatial evolution of breakthrough curves away from the source is predicted based on cross-sectional velocity distribution and the connectivity, which is expressed by the velocity transition probability density. The transition probability is specified via a copula function that can help construct a joint distribution with a given correlation and given marginal velocities. Using this approach, we analyze the breakthrough curves depending on the velocity distribution and correlation properties. The model shows how the solute transport behavior evolves from ballistic transport at small spatial scales to Fickian dispersion at large length scales relative to the velocity correlation length.

  7. Compacted artificially cemented soil-acid leachate contaminant interactions: breakthrough curves and transport parameters.

    Science.gov (United States)

    Knop, Alexandre; VanGulck, Jamie; Heineck, Karla Salvagni; Consoli, Nilo Cesar

    2008-06-30

    The transport of contaminants through compacted artificially cemented soil subjected to acid leachate contaminant percolation was analyzed by means of laboratory column tests. The effect of cement content, degree of acidity and hydraulic gradient were evaluated after permeation of several pore volumes of acid leachate contaminant flow through the soil. The pH, electric conductivity and solute breakthrough curves were considered throughout the study. The results showed that the increase of cement content increases the solute pore volumes needed before breakthrough occurred. An increase of the degree of acidity of the percolate and of the hydraulic gradient cause a reduction in the pore volumes needed before breakthrough occurred. The larger the soil cement content, the longer the time required to reach maximum effluent solute concentration. The hydraulic conductivity slightly increased due to cement addition and reduced with increasing degree of acidity of the percolate. Finally, it is possible to state that cement addition to the soil was responsible for increasing retardation coefficient (R) and distribution coefficient (kd) values, meaning that the artificially cemented soils have higher capability to retard the propagation of the contamination and amplified affinity with dissolved acid contaminant.

  8. Carbon dioxide adsorption on polyacrylamide-impregnated silica gel and breakthrough modeling

    Science.gov (United States)

    Zhao, Yi; Shen, Yanmei; Bai, Lu; Ni, Shiqing

    2012-11-01

    Polyacrylamide-impregnated silica gel was prepared to capture CO2 from flue gas. The polymerization of acrylamide was carried out in AN solvent using AIBN as initiator and EGDMA as crosslinker. The adsorbents were characterized by N2 adsorption, FTIR analysis, SEM analysis, and thermal gravimetric analysis. The results showed that the polymer was not only occupying the porosity of the silica, but necessarily surrounding silica particles, and the amide groups was successfully loaded on the support silica. The impregnated silica displayed good thermal-stability at 250 °C. The CO2 adsorption isotherms were measured to examine CO2 adsorption on adsorbents, and the results showed that the capacity was increased significantly after modification. The CO2 isosteric adsorption heats calculated from the isotherms showed that the adsorption interaction of CO2 with the functionalized material may be mainly an intermolecular force or hydrogen bond. Fixed-bed breakthrough model of CO2 adsorption on functionalized silica was successfully developed to describe the breakthrough curves under different adsorption temperature, CO2 concentration, and gas flow rate. The mass transfer coefficients of CO2 were calculated from the breakthrough model, the results showed that adsorption rate could be promoted by increasing temperature, flow rate and CO2 concentration, among which the effect of gas flow rate is the most obvious.

  9. Breakthrough revisited: investigating the requirements for growth of dust beyond the bouncing barrier

    Science.gov (United States)

    Booth, Richard A.; Meru, Farzana; Lee, Man Hoi; Clarke, Cathie J.

    2018-03-01

    For grain growth to proceed effectively and lead to planet formation, a number of barriers to growth must be overcome. One such barrier, relevant for compact grains in the inner regions of the disc, is the `bouncing barrier' in which large grains (˜mm size) tend to bounce off each other rather than sticking. However, by maintaining a population of small grains, it has been suggested that cm-size particles may grow rapidly by sweeping up these small grains. We present the first numerically resolved investigation into the conditions under which grains may be lucky enough to grow beyond the bouncing barrier by a series of rare collisions leading to growth (so-called `breakthrough'). Our models support previous results, and show that in simple models breakthrough requires the mass ratio at which high-velocity collisions transition to growth instead of causing fragmentation to be low, ϕ ≲ 50. However, in models that take into account the dependence of the fragmentation threshold on mass ratio, we find that breakthrough occurs more readily, even if mass transfer is relatively inefficient. This suggests that bouncing may only slow down growth, rather than preventing growth beyond a threshold barrier. However, even when growth beyond the bouncing barrier is possible, radial drift will usually prevent growth to arbitrarily large sizes.

  10. Making synthetic mudstone: Parametric resedimentation studies at high effective stress to determine controls on breakthrough pressure and permeability

    Science.gov (United States)

    Guiltinan, E. J.; Cardenas, M. B.; Cockrell, L.; Espinoza, N.

    2017-12-01

    The geologic sequestration of CO2 is widely considered a potential solution for decreasing anthropogenic atmospheric CO2 emissions. As CO2 rises buoyantly within a reservoir it pools beneath a caprock and a pressure is exerted upon the pores of the caprock proportionally to the height of the pool. The breakthrough pressure is the point at which CO2 begins to flow freely across the caprock. Understanding the mineralogical and grain size controls on breakthrough pressure is important for screening the security of CO2 sequestration sites. However, breakthrough pressure and permeability measurements on caprocks are difficult to conduct in a systematic manner given the variability in and heterogeneity of naturally occurring mudstones and shales causing significant noise and scatter in the literature. Recent work has even revealed the ability for CO2 to pass through thin shale beds at relatively low pressures. To broaden the understanding of shale breakthrough and permeability, we developed an approach that allows for the creation of resedimented mudstones at high effective stresses. Resedimented samples also include calcium carbonate cement. Using this technique, we explore the controls on entry pressure, breakthrough pressure, and permeability of synthetic mudstones. Understanding the effect of mineralogy and grain size on the permeability and breakthrough pressure of mudstones at reservoir stresses will help in the selection and uncertainty quantification of secure CO2 storage sites.

  11. Comprehensive sieve analysis of breakthrough HIV-1 sequences in the RV144 vaccine efficacy trial.

    Directory of Open Access Journals (Sweden)

    Paul T Edlefsen

    2015-02-01

    Full Text Available The RV144 clinical trial showed the partial efficacy of a vaccine regimen with an estimated vaccine efficacy (VE of 31% for protecting low-risk Thai volunteers against acquisition of HIV-1. The impact of vaccine-induced immune responses can be investigated through sieve analysis of HIV-1 breakthrough infections (infected vaccine and placebo recipients. A V1/V2-targeted comparison of the genomes of HIV-1 breakthrough viruses identified two V2 amino acid sites that differed between the vaccine and placebo groups. Here we extended the V1/V2 analysis to the entire HIV-1 genome using an array of methods based on individual sites, k-mers and genes/proteins. We identified 56 amino acid sites or "signatures" and 119 k-mers that differed between the vaccine and placebo groups. Of those, 19 sites and 38 k-mers were located in the regions comprising the RV144 vaccine (Env-gp120, Gag, and Pro. The nine signature sites in Env-gp120 were significantly enriched for known antibody-associated sites (p = 0.0021. In particular, site 317 in the third variable loop (V3 overlapped with a hotspot of antibody recognition, and sites 369 and 424 were linked to CD4 binding site neutralization. The identified signature sites significantly covaried with other sites across the genome (mean = 32.1 more than did non-signature sites (mean = 0.9 (p < 0.0001, suggesting functional and/or structural relevance of the signature sites. Since signature sites were not preferentially restricted to the vaccine immunogens and because most of the associations were insignificant following correction for multiple testing, we predict that few of the genetic differences are strongly linked to the RV144 vaccine-induced immune pressure. In addition to presenting results of the first complete-genome analysis of the breakthrough infections in the RV144 trial, this work describes a set of statistical methods and tools applicable to analysis of breakthrough infection genomes in general vaccine

  12. Determination of hydrogeologic parameters and media nonhomogeneity from nuclear tracer breakthrough curve data

    International Nuclear Information System (INIS)

    Yu, C.; Jester, W.A.; Jarrett, A.R.

    1984-01-01

    A group transfer model has been developed for the determination of hydrogeologic parameters and medium nonhomogeneity from experimental breakthrough curves. The model is designed to handle the migration of tracers through heterogeneous and homogeneous soil systems under saturated and unsaturated conditions. It divides the medium into groups according to the water velocity in each group. Each group is evaluated in its response to the tracer in terms of flow path distance, pore-water velocity, dispersion coefficient, retardation factor, volumetric water content and mass transfer coefficients. 17 references, 3 figures

  13. Comprehensive Sieve Analysis of Breakthrough HIV-1 Sequences in the RV144 Vaccine Efficacy Trial

    Science.gov (United States)

    Edlefsen, Paul T.; Rolland, Morgane; Hertz, Tomer; Tovanabutra, Sodsai; Gartland, Andrew J.; deCamp, Allan C.; Magaret, Craig A.; Ahmed, Hasan; Gottardo, Raphael; Juraska, Michal; McCoy, Connor; Larsen, Brendan B.; Sanders-Buell, Eric; Carrico, Chris; Menis, Sergey; Bose, Meera; Arroyo, Miguel A.; O’Connell, Robert J.; Nitayaphan, Sorachai; Pitisuttithum, Punnee; Kaewkungwal, Jaranit; Rerks-Ngarm, Supachai; Robb, Merlin L.; Kirys, Tatsiana; Georgiev, Ivelin S.; Kwong, Peter D.; Scheffler, Konrad; Pond, Sergei L. Kosakovsky; Carlson, Jonathan M.; Michael, Nelson L.; Schief, William R.; Mullins, James I.; Kim, Jerome H.; Gilbert, Peter B.

    2015-01-01

    The RV144 clinical trial showed the partial efficacy of a vaccine regimen with an estimated vaccine efficacy (VE) of 31% for protecting low-risk Thai volunteers against acquisition of HIV-1. The impact of vaccine-induced immune responses can be investigated through sieve analysis of HIV-1 breakthrough infections (infected vaccine and placebo recipients). A V1/V2-targeted comparison of the genomes of HIV-1 breakthrough viruses identified two V2 amino acid sites that differed between the vaccine and placebo groups. Here we extended the V1/V2 analysis to the entire HIV-1 genome using an array of methods based on individual sites, k-mers and genes/proteins. We identified 56 amino acid sites or “signatures” and 119 k-mers that differed between the vaccine and placebo groups. Of those, 19 sites and 38 k-mers were located in the regions comprising the RV144 vaccine (Env-gp120, Gag, and Pro). The nine signature sites in Env-gp120 were significantly enriched for known antibody-associated sites (p = 0.0021). In particular, site 317 in the third variable loop (V3) overlapped with a hotspot of antibody recognition, and sites 369 and 424 were linked to CD4 binding site neutralization. The identified signature sites significantly covaried with other sites across the genome (mean = 32.1) more than did non-signature sites (mean = 0.9) (p < 0.0001), suggesting functional and/or structural relevance of the signature sites. Since signature sites were not preferentially restricted to the vaccine immunogens and because most of the associations were insignificant following correction for multiple testing, we predict that few of the genetic differences are strongly linked to the RV144 vaccine-induced immune pressure. In addition to presenting results of the first complete-genome analysis of the breakthrough infections in the RV144 trial, this work describes a set of statistical methods and tools applicable to analysis of breakthrough infection genomes in general vaccine efficacy

  14. Considerations of breakthrough orientation on prospecting uranium resources in southwestern China

    International Nuclear Information System (INIS)

    Sun Zexuan; Kang Youchun

    2010-01-01

    Based on the study of metallogenic environment, ore control factors, and metallogenic genesis of uranium deposits, combining with regional geological background, 5 uranium metallogenic belts including Gangdise-Tengchong, Sanjiang, northwest of Sichuan, north of Sichuan, middle of Guizhou and 4 uranium metallogenic prospective belts including Gangdise, Changdu, Changtai-Daocheng and Xikang-Yunnan Axis can be classified in southwestern China. The thought of prospecting uranium resources should aim at strengthening regional geological investigation, selecting favorable metallogenic areas, accelerating regional evaluation and implementing uranium resources survey gradually. The breakthrough orientation includes expanding old mining areas, opening up new bases, prospecting new types, and raising comprehensive value for unconventional uranium resources. (authors)

  15. Accelerated approval and breakthrough therapy designation: oncology drug development on speed?

    Science.gov (United States)

    Yao, James C; Meric-Bernstam, Funda; Lee, J Jack; Eckhardt, S Gail

    2013-08-15

    Recent advances in biotechnology have led to discoveries resulting in major improvements in the therapy of refractory malignancies, although most advanced cancers remain incurable. Thus, there is global consensus around the need to streamline the drug approval process for effective agents. Accelerated Approval and Breakthrough Therapy Designation hold the promise of making new treatments available sooner through the use of smaller studies using intermediate endpoints. Here, we consider the inherent limitations of smaller studies and discuss the strategies for hastening oncology drug development while maintaining high-efficacy standards. ©2013 AACR.

  16. Successful pregnancy outcome in paroxysmal nocturnal hemoglobinuria (PNH following escalated eculizumab dosing to control breakthrough hemolysis

    Directory of Open Access Journals (Sweden)

    Ruby Sharma

    2015-01-01

    Full Text Available Pregnancy in women with paroxysmal nocturnal hemoglobinuria (PNH is associated with increased maternal and fetal morbidity and mortality. There is limited published experience regarding therapy of PNH during pregnancy. We describe a case of a 30 year old female with hypoplastic myelodysplastic syndrome and PNH. After two years of treatment with eculizumab, she became pregnant. She developed breakthrough hemolysis at 20 weeks gestation. Pharmacokinetic and pharmacodynamic studies demonstrated a subtherapeutic eculizumab level with absence of complement blockade. Escalation of her eculizumab dose successfully controlled hemolysis and restored therapeutic eculizumab level and activity. She delivered a healthy baby at 36 weeks.

  17. So That's How! 2007 Microsoft® Office System Timesavers, Breakthroughs, & Everyday Genius

    CERN Document Server

    Archilla, Evan

    2009-01-01

    Turn your productivity drains into productivity gains! With this practical (and fun) guide, you'll discover the best ways to tackle your daily work with the 2007 Microsoft Office system. The authors have taught thousands of people to get better results with less effort. Now these efficiency experts let you steal from their "tip jar" full of timesaving shortcuts and other brilliant ideas. You'll explore what's new in your favorite Microsoft Office programs-and transform the way you work. Get timesavers, breakthroughs, & everyday genius to: Take control of your inbox, calendar, and everyday in

  18. Effect of Relative Humidity on Adsorption Breakthrough of CO2 on Activated Carbon Fibers

    Directory of Open Access Journals (Sweden)

    Yu-Chun Chiang

    2017-11-01

    Full Text Available Microporous activated carbon fibers (ACFs were developed for CO2 capture based on potassium hydroxide (KOH activation and tetraethylenepentamine (TEPA amination. The material properties of the modified ACFs were characterized using several techniques. The adsorption breakthrough curves of CO2 were measured and the effect of relative humidity in the carrier gas was determined. The KOH activation at high temperature generated additional pore networks and the intercalation of metallic K into the carbon matrix, leading to the production of mesopore and micropore volumes and providing access to the active sites in the micropores. However, this treatment also resulted in the loss of nitrogen functionalities. The TEPA amination has successfully introduced nitrogen functionalities onto the fiber surface, but its long-chain structure blocked parts of the micropores and, thus, made the available surface area and pore volume limited. Introduction of the power of time into the Wheeler equation was required to fit the data well. The relative humidity within the studied range had almost no effects on the breakthrough curves. It was expected that the concentration of CO2 was high enough so that the impact on CO2 adsorption capacity lessened due to increased relative humidity.

  19. Design and optimization of a chronotherapeutic dosage form for treatment of nocturnal acid breakthrough.

    Science.gov (United States)

    Agarwal, Vaibhav; Bansal, Mayank

    2012-11-01

    Present work focuses on the use of tamarind gum to develop a drug delivery system making combined use of floating and pulsatile principles, for the chrono-prevention of nocturnal acid breakthrough. The desired aim was achieved by fabricating a floating delivery system bearing time - lagged coating of Tamarindus indica seed polymer for the programmed release of Famotidine. Response Surface METHODology was the statistical tool that was employed for experiment designing, mathematical model generation and optimization study. A 32 full factorial design was used in designing the experiment. % weight ratio of tamarind gum to ethyl cellulose in the coating combination and the coating weight were the independent variables, whereas the lag time for drug release and the cumulative % drug release in 330 minutes were the observed responses. Results revealed that both the coating composition and the coating weight significantly affected the release of drug from the dosage form. The optimized formulation prepared according to the computer generated software, Design-Expert® deciphered response which were in close proximity with the experimental responses, thus confirming the robustness and accuracy of the predicted model for the utilization of natural polymer like tamarind gum for the chronotherapeutic treatment of nocturnal acid breakthrough.

  20. Hand Hygiene Improvement and Sustainability: Assessing a Breakthrough Collaborative in Western Switzerland.

    Science.gov (United States)

    Staines, Anthony; Amherdt, Isabelle; Lécureux, Estelle; Petignat, Christiane; Eggimann, Philippe; Schwab, Marcos; Pittet, Didier

    2017-12-01

    OBJECTIVE To assess hand hygiene improvement and sustainability associated with a Breakthrough Collaborative. DESIGN Multicenter analysis of hand hygiene compliance through direct observation by trained observers. SETTING A total of 5 publicly funded hospitals in 14 locations, with a total of 1,152 beds, in the County of Vaud, Switzerland. PARTICIPANTS Clinical staff. INTERVENTIONS In total, 59,272 opportunities for hand hygiene were monitored for the duration of the study, for an average of 5,921 per audit (range, 5,449-6,852). An 18-month Hand Hygiene Breakthrough Collaborative was conducted to implement the WHO multimodal promotional strategy including improved access to alcohol-based hand rub, education, performance measurement and feedback, reminders and communication, leadership engagement, and safety culture. RESULTS Overall hand hygiene compliance improved from 61.9% to 88.3% (Pstrategy for content and measurement was associated with significant and substantial improvement in compliance across all professions, all hand hygiene indications, and all participating hospitals. Infect Control Hosp Epidemiol 2017;38:1420-1427.

  1. Proposal to realize a cost breakthrough in carbon-13 production by photochemical separation

    International Nuclear Information System (INIS)

    Marling, J.B.

    1979-10-01

    A cost breakthrough can now be made in photochemical production of the rare stable isotope carbon-13. This cost breakthrough is achieved by CO 2 laser infrared multiple-photon dissociation of any of several halocarbons (Freon derivatives) such as CF 3 Cl, CF 3 Br, or CF 2 Cl 2 . The single-step carbon-13 enrichment factor for this process is approximately 50, yielding 30% pure C-13 in one step, or up to 97% pure C-13 in two steps. A three-fold carbon-13 cost reduction to below $20/gram is expected to be achieved in a small laboratory-scale demonstration facility capable of producing 4 to 8 kg/year of carbon-13, using presently available pulsed CO 2 TEA lasers at an average power level of 50 watts. Personnel costs dominate the attainable C-13 production costs in a small photochemical enrichment facility. A price reduction to $2/gm carbon-13 is feasible at carbon-13 production levels of 100 to 1000 kg/year, dominated by the Freon raw material costs

  2. First Breakthrough for Future Air-Breathing Magneto-Plasma Propulsion Systems

    Science.gov (United States)

    Göksel, B.; Mashek, I. Ch

    2017-04-01

    A new breakthrough in jet propulsion technology since the invention of the jet engine is achieved. The first critical tests for future air-breathing magneto-plasma propulsion systems have been successfully completed. In this regard, it is also the first time that a pinching dense plasma focus discharge could be ignited at one atmosphere and driven in pulse mode using very fast, nanosecond electrostatic excitations to induce self-organized plasma channels for ignition of the propulsive main discharge. Depending on the capacitor voltage (200-600 V) the energy input at one atmosphere varies from 52-320 J/pulse corresponding to impulse bits from 1.2-8.0 mNs. Such a new pulsed plasma propulsion system driven with one thousand pulses per second would already have thrust-to-area ratios (50-150 kN/m²) of modern jet engines. An array of thrusters could enable future aircrafts and airships to start from ground and reach altitudes up to 50km and beyond. The needed high power could be provided by future compact plasma fusion reactors already in development by aerospace companies. The magneto-plasma compressor itself was originally developed by Russian scientists as plasma fusion device and was later miniaturized for supersonic flow control applications. So the first breakthrough is based on a spin-off plasma fusion technology.

  3. Fentanyl sublingual spray for breakthrough cancer pain in patients receiving transdermal fentanyl.

    Science.gov (United States)

    Alberts, David S; Smith, Christina Cognata; Parikh, Neha; Rauck, Richard L

    2016-10-01

    To investigate the relationship between effective fentanyl sublingual spray (FSS) doses for breakthrough cancer pain (BTCP) and around-the-clock (ATC) transdermal fentanyl patch (TFP). Adults tolerating ATC opioids received open-label FSS for 26 days, followed by a 26-day double-blind phase for patients achieving an effective dose (100-1600 µg). Out of 50 patients on ATC TFP at baseline, 32 (64%) achieved an effective dose. FSS effective dose moderately correlated with mean TFP dose (r = 0.4; p = 0.03). Patient satisfaction increased during the study. Common adverse event included nausea (9%) and peripheral edema (9%). FSS can be safely titrated to an effective dose for BTCP in patients receiving ATC TFP as chronic cancer pain medication. ClinicalTrials.gov identifier: NCT00538850.

  4. Ovarian stem cells and neo-oogenesis: A breakthrough in reproductive biology research

    Directory of Open Access Journals (Sweden)

    S Mooyottu1

    2011-04-01

    Full Text Available The concept of ovarian stem cells which can replenish the ovarian reserve in postnatal mammalian females is a revolutionary breakthrough in reproductive biology. This idea overturned the central dogma existed in female reproductive physiology. Contradicting the popular belief that oogenesis does not occur in post natal life, researchers proved the existence of putative stem cells in ovary, which can supply functional follicles in post natal ovaries. Even though the idea of neo-oogenesis in postnatal ovaries in normal conditions is controversial, the isolation and manipulation of ovarian stem cells have got tremendous application in medical, veterinary and animal production fields. [Veterinary World 2011; 4(2.000: 89-91

  5. Marketization of Collective-owned Rural Land: A Breakthrough in Shenzhen, China

    Directory of Open Access Journals (Sweden)

    Yonghua Zou

    2014-12-01

    Full Text Available This study focuses on analyzing the ongoing land policy reform that allows collective-owned rural land transactions in the open market in Shenzhen, China. Employing a case study method, we investigate this land policy evolution through description and contextual analysis. We argue that the existing dual-track land administration system, within which the state administers market transactions, has contributed to numerous social problems, such as urban land scarcity, inefficiency of land resource allocation, and exacerbated social injustice. Following the recent actions of the central government, a collective-owned rural land parcel in Shenzhen was officially transferred in November 2013, an action viewed as a landmark step in reforming the current dual-track land system. Though the generalization of Shenzhen’s experiment nationwide faces significant barriers, Shenzhen’s breakthrough in liberalization of the rural land market indicates that China is moving toward a potential new round of land policy revolution.

  6. Breakthrough Pain Associated with a Reduction in Serum Buprenorphine Concentration during Dialysis.

    Science.gov (United States)

    Salili, Ali Reza; Müller, Daniel; Skendaj, Roswitha; Jehle, Andreas W; Taegtmeyer, Anne B

    2016-01-01

    To describe a case of breakthrough pain associated with a reduction in serum buprenorphine concentration during dialysis. Pharmacokinetic sampling of total and free buprenorphine and norbuprenorphine in an 80 year old male undergoing haemodialysis three times per week who received 5760 µg oral and transdermal buprenorphine daily was performed. The patient's serum albumin concentration was 23g/l (reference range: 35-52 g/l). Pharmacokinetic sampling revealed a free buprenorphine fraction of 32% (consistent with the hypoalbuminaemia), which was markedly reduced at the end of dialysis (free buprenorphine concentration 2.4 µg/l before vs. buprenorphine doses during dialysis to prevent significant falls in the concentration of active drug. Copyright © 2016 Elsevier HS Journals, Inc. All rights reserved.

  7. [Human Primordial Germ Cell Specification--Breakthrough In Culture and Hopes for Therapeutic Utilization].

    Science.gov (United States)

    Magnúsdóttir, Erna

    2015-10-01

    Germ cells are the precursors to the gametes that carry genetic and epigenetic information between human generations and generate a new individual. Because germ cells are specified early during embryogenesis, at the time of embryo implantation, they are inaccessible for research. Our understanding of their biology has therefore developed slowly since their identification over one hundred years ago. As a result of research into the properties of human and mouse embryonic stem cells and primordial germ cells, scientists have now succeeded in efficiently generating human primordial germ cells in culture by embryonic stem cell and induced pluripotent stem cell culture. In this review we will discuss the state of our knowledge of human primordial germ cells and how research into the pluripotent properties of human and mouse embryonic germ cells has led to this breakthrough. In addition we will discuss the possible utilization of a cell culture system of human primordial germ cells for research into and treatment of germ cell related abnormalities.

  8. Solar Spicules: Prospects for Breakthroughs in Understanding with Solar-B

    Science.gov (United States)

    Sterling, A. C.

    2004-01-01

    Spicules densely populate the lower solar atmosphere; any image or movie of the chromosphere shows a plethora of them or their "cousins," such as mottles or fibrils. Yet despite several decades of effort we still do not know the mechanism that generates them, or how important their contribution is to the material and energy balance of the overall solar atmosphere. Solar-B will provide exciting new chromospheric observations at high time- and spatial-resolution, along with associated quality magnetic field data, that promise to open doors to revolutionary breakthroughs in spicule research. In this presentation we will review the current observational and theoretical status of spicule studies, and discuss prospects for advances in spicule understanding during the Solar-B era.

  9. Trial Design and Efficacy Thresholds for Granting Breakthrough Therapy Designation in Oncology.

    Science.gov (United States)

    Kern, Kenneth A

    2016-08-01

    Breakthrough therapy designation (BTD) is a new approach created by the US Congress and the US Food and Drug Administration (FDA) as part of the FDA Innovation and Safety Act of 2012 to expedite the drug development process for serious illness, including cancer. By law, to qualify for BTD, a new molecular entity must demonstrate substantial clinical improvement over existing therapies. Although the administrative requirements for granting BTD have been made available by the FDA, the actual trial designs, end points, and quantitative therapeutic thresholds involved in the granting process have not been made public. This literature review evaluates nine oncology new molecular entities granted BTD involved in 10 accelerated approvals and summarizes the key factors in clinical trial design leading to successful BTD applications. This information can be used by oncology research teams to set goals for BTD when developing clinical trial designs and thresholds in expedited drug development programs. Copyright © 2016 by American Society of Clinical Oncology.

  10. Central Hyperexcitability in Chronic Musculoskeletal Pain: A Conceptual Breakthrough with Multiple Clinical Implications

    Directory of Open Access Journals (Sweden)

    Jan Lidbeck

    2002-01-01

    Full Text Available Recent investigations of dysfunctional pain processing in the central nervous system have contributed much knowledge about the development of chronic musculoskeletal pain. Many common chronic musculoskeletal pain syndromes - including regional myofascial pain syndromes, whiplash pain syndromes, refractory work-related neck-shoulder pain, certain types of chronic low back pain, fibromyalgia and others - may essentially be explained by abnormalities in central pain modulation. The growing awareness of dysfunctional central pain modulation may be a conceptual breakthrough leading to a better understanding of common chronic pain disorders. A new paradigm will have multiple clinical implications, including re-evaluation of clinical practice routines and rehabilitation methods, and will focus on controversial issues of medicolegal concern. The concept of dysfunctional central pain processing will also necessitate a mechanism-based classification of pain for the selection of individual treatment and rehabilitation programs for subgroups of patients with chronic musculoskeletal pain due to different pathophysiological mechanisms.

  11. Posterior reversible encephalopathy syndrome and acute post-streptococcal glomerulonephritis mimicking breakthrough seizures

    Directory of Open Access Journals (Sweden)

    Kamille Abdool

    2015-05-01

    Full Text Available We report the case of a 14-year-old boy with a past history of primary generalized seizures, who had been seizure-free for 2 years on sodium valproate and presented with generalized tonic clonic seizures suggestive of breakthrough seizures. Examination revealed hypertension, impetiginous lesions of the lower limbs, microscopic hematuria, elevated antistreptolysin O titre and low complement levels consistent with acute post-streptococcal glomerulonephritis. Cranial magnetic resonance imaging (MRI demonstrated changes consistent with posterior reversible encephalopathy syndrome. Hypertension was controlled with intravenous nitroglycerin followed by oral captopril and amlodipine. Brain MRI changes returned normal within 2 weeks. The nephritis went in to remission within 2 months and after 8 months the patient has been seizure free again. Posterior reversible encephalopathy syndrome appeared to have neither short nor intermediate effect on seizure control in this patient. The relationship between posterior reversible encephalopathy syndrome and seizures is reviewed.

  12. Break-through of Mass Integration in Textile Industry through Development of Generic Water Recycle Schemes

    DEFF Research Database (Denmark)

    Wenzel, Henrik

    2003-01-01

    processing is one of the largest and oldest industries world-wide and responsible for a substantial resource consumption and pollution. Especially the wet processing part of the industry, i.e. pre-treatment, dyeing, printing and finishing, is polluting and resource consuming in terms of both water, energy......As a result of a long term South African – Danish research co-operation on Cleaner Production in textile industry, a number of generic and widely applicable water recycle schemes for textile wet processing has been developed, and the first break-through of water recycling has been achieved. Textile...... and chemicals. It entails a vast variety of water consuming processes, and like in most industries, fresh water is used in all processes with almost no exceptions. Between researchers, it was known for many years that fresh water is not needed by all processes taking place in textile wet treatment. But sound...

  13. Posterior Reversible Encephalopathy Syndrome and Acute Post-Streptococcal Glomerulonephritis Mimicking Breakthrough Seizures.

    Science.gov (United States)

    Abdool, Kamille; Ramcharan, Kanterpersad; Bhagwandass, Neal; Persad, Navindra; Temull, Vasant; Seegobin, Karan; Mike, Cassie

    2015-03-23

    We report the case of a 14-year-old boy with a past history of primary generalized seizures, who had been seizure-free for 2 years on sodium valproate and presented with generalized tonic clonic seizures suggestive of breakthrough seizures. Examination revealed hypertension, impetiginous lesions of the lower limbs, microscopic hematuria, elevated anti-streptolysin O titre and low complement levels consistent with acute post-streptococcal glomerulonephritis. Cranial magnetic resonance imaging (MRI) demonstrated changes consistent with posterior reversible encephalopathy syndrome. Hypertension was controlled with intravenous nitroglycerin followed by oral captopril and amlodipine. Brain MRI changes returned normal within 2 weeks. The nephritis went in to remission within 2 months and after 8 months the patient has been seizure free again. Posterior reversible encephalopathy syndrome appeared to have neither short nor intermediate effect on seizure control in this patient. The relationship between posterior reversible encephalopathy syndrome and seizures is reviewed.

  14. Supply chain optimization: a practitioner's perspective on the next logistics breakthrough.

    Science.gov (United States)

    Schlegel, G L

    2000-08-01

    The objective of this paper is to profile a practitioner's perspective on supply chain optimization and highlight the critical elements of this potential new logistics breakthrough idea. The introduction will briefly describe the existing distribution network, and business environment. This will include operational statistics, manufacturing software, and hardware configurations. The first segment will cover the critical success factors or foundations elements that are prerequisites for success. The second segment will give you a glimpse of a "working game plan" for successful migration to supply chain optimization. The final segment will briefly profile "bottom-line" benefits to be derived from the use of supply chain optimization as a strategy, tactical tool, and competitive advantage.

  15. Chemical beam epitaxy as a breakthrough technology for photovoltaic solar energy applications

    Science.gov (United States)

    Yamaguchi, Masafumi; Warabisako, Terunori; Sugiura, Hideo

    1994-03-01

    Chemical beam epitaxy (CBE) is a possible breakthrough technology for photovoltaic (PV) solar energy applications. This paper reviews the present status of epitaxial technologies for high-efficiency III-V compound semiconductor solar cells. It also discusses the advantages of CBE technology over metalorganic chemical vapor deposition (MOCVD) and molecular beam epitaxy (MBE) for III-V compound solar cell fabrication. CBE and related growth technologies can effectively produce high-efficiency and low-cost multi-junction III-V compound solar cells. Moreover, CBE may possibly reduce solar cell fabrication costs in the future because it utilizes source materials more efficiently than MBE and MOCVD. The cost of solar cell fabrication using CBE are estimated and compared with those using MOCVD and MBE.

  16. Research Productivity in Top-Ranked Schools in Psychology and Social Work: Does Having a Research Culture Matter?

    Science.gov (United States)

    Barner, John R.; Holosko, Michael J.; Thyer, Bruce A.; King, Steve, Jr.

    2015-01-01

    The "h"-index for all social work and psychology tenured or tenure-track faculty in the top 25 social work programs and psychology departments as ranked by "U.S. News and World Report" in 2012 and 2013, respectively, were obtained, permitting comparison of the scholarly influence between members (N = 1,939) of the two fields.…

  17. Dearth by a Thousand Cuts? Accounting for Gender Differences in Top-Ranked Publication Rates in Social Psychology.

    Science.gov (United States)

    Cikara, Mina; Rudman, Laurie; Fiske, Susan

    2012-01-01

    Publication in the Journal of Personality and Social Psychology , a flagship indicator of scientific prestige, shows dramatic gender disparities. A bibliometric analysis included yoked-control authors matched for Ph.D. prestige and cohort. Though women publish less, at slower annual rates, they are more cited in handbooks and textbooks per JPSP -article-published. No gender differences emerged on variables reflecting differential qualifications. Many factors explain gender discrepancy in productivity. Among top publishers, per-year rate and first authorship especially differ by gender; rate uniquely predicts top-male productivity, whereas career-length uniquely predicts top-female productivity. Among men, across top-publishers and controls, productivity correlates uniquely with editorial negotiating and being married. For women, no personal variables predict productivity. A separate inquiry shows tiny gender differences in acceptance rates per JPSP article submitted; discrimination would be a small-but-plausible contributor, absent independent indicators of manuscript quality. Recent productivity rates mirror earlier gender disparities, suggesting gender gaps will continue.

  18. On the late-time behavior of tracer test breakthrough curves

    Energy Technology Data Exchange (ETDEWEB)

    HAGGERTY, ROY; MCKENNA, SEAN A; MEIGS, LUCY C

    2000-06-12

    The authors investigated the late-time (asymptotic) behavior of tracer test breakthrough curves (BTCs) with rate-limited mass transfer (e.g., in dual or multi-porosity systems) and found that the late-time concentration, c, is given by the simple expression: c = t{sub ad} (c{sub 0}g {minus} m{sub 0}{partial_derivative}g/{partial_derivative}t), for t >> t{sub ad} and t{sub a} >> t{sub ad} where t{sub ad} is the advection time, c{sub 0} is the initial concentration in the medium, m{sub 0} is the 0th moment of the injection pulse; and t{sub a} is the mean residence time in the immobile domain (i.e., the characteristic mass transfer time). The function g is proportional to the residence time distribution in the immobile domain, the authors tabulate g for many geometries, including several distributed (multirate) models of mass transfer. Using this expression they examine the behavior of late-time concentration for a number of mass transfer models. One key results is that if rate-limited mass transfer causes the BTC to behave as a power-law at late-time (i.e., c {approximately} t{sup {minus}k}), then the underlying density function of rate coefficients must also be a power-law with the form a{sup k{minus}}, as a {r_arrow}0. This is true for both density functions of first-order and diffusion rate coefficients. BTCs with k < 3 persisting to the end of the experiment indicate a mean residence time longer than the experiment and possibly infinite, and also suggest an effective rate coefficient that is either undefined or changes as a function of observation time. They apply their analysis to breakthrough curves from Single-Well Injection-Withdrawal tests at the Waste Isolation Pilot Plant, New Mexico.

  19. Accord on “Fire and Building Safety in Bangladesh”: A Breakthrough Agreement?

    Directory of Open Access Journals (Sweden)

    Zillur Rahman

    2014-03-01

    Full Text Available This discussion aims to review the emergence of the “Accord on Fire and Building Safety in Bangladesh” signed on May 13, 2013, and evaluate if it is an international agreement “breakthrough”. The Accord is signed not only by the global clothing brands and national garment unions but also by international trade union organizations, which is a new development. This raises a question: could this agreement set a new international negotiating precedence in industrial relations between transnational corporations and international trade union organizations? In Bangladesh, globalization has played an important role for booming garment industries. Yet, lack of workers’ rights, weak safety situations, and poor working conditions have continuously been reported. Local and international solidarity movements and garment workers’ welfare associations have been emphasizing workers’ rights and better and safer working environments in workplaces since the beginning of the 1990s. However, their voices were not highly considered even there were some initiatives. Following the ‘Rana Plaza’ garment factory building collapse in April 2013, one of the world’s worst industrial accidents, with more than 1,100 dead workers, some strong measures have been taken—one of these, signing the ‘Accord on Fire and Building Safety in Bangladesh’. This is a strong achievement of a long struggle to take collective action for improving the safety in garment factories in Bangladesh. Although the Accord is understood as a game changer or breakthrough in relation to national and international agreements, do we really know yet if it is a breakthrough or not when it comes to its implementation?

  20. The Breakthrough Listen Search for Intelligent Life: L-Band Data Recovery and Analysis

    Science.gov (United States)

    Lifset, Noah

    2018-01-01

    Breakthrough Listen is a next generation SETI project conducted under the leadership of UC Berkeley. In January 2016, it began collecting data with the Green Bank Telescope in West Virginia. It started a targeted campaign of stars within 50 pc with the L-band receiver (1.1-1.9 GHz). Enriquez et al. (2017) analyzed two thirds of this data comprising an homogeneous sample. The remaining one third of the L-band data taken since then is incomplete in some way, and thus required a different analysis. This project identified all possible issues with this data, and classified it based on its ability to be analyzed. Seven issues were found, and six are able to be accounted for with adapted analysis techniques. The data set consisted of observations of 366 stars within 50 pc, with 297 able to be analyzed and 69 needing to be re-observed. The Breakthrough Listen observation strategy uses 6 five minute observations per target star alternating between ON-target and OFF-target in the form ABACAD, which allows for easier radio-frequency interference identification. The analysis techniques, called turboSETI, search for a narrowband signal with a drifting doppler shift. For this data, a maximum drift rate of 4 Hz/s was chosen, which corresponds to an ET emitter on a planet three times the size of earth rotating three times as fast. An SNR threshold for signal detection of 15 was chosen, which allows for detection of signals with an EIRP (Equivalent Isotropic Radiated Power) of 9.72 x109 W for an emitter at a distance of 10 Ly. A total of 10 candidates signals were found, which were all determined to be either a satellite or another type of RFI. We can infer an upper limit of ~ 5 x108 stars in the milky way transmitting continuously towards earth in the L-band with a EIRP of 1012 W or greater.

  1. Photogravimagnetic assists of light sails: a mixed blessing for Breakthrough Starshot?

    Science.gov (United States)

    Forgan, Duncan H.; Heller, René; Hippke, Michael

    2018-03-01

    Upon entering a star system, light sails are subject to both gravitational forces and radiation pressure, and can use both in concert to modify their trajectory. Moreover, stars possess significant magnetic fields, and if the sail is in any way charged, it will feel the Lorentz force also. We investigate the dynamics of so-called `photogravimagnetic assists' of sailcraft around α Centauri A, a potential first destination en route to Proxima Centauri (the goal of the Breakthrough Starshot programme). We find that a 10-m2 sail with a charge-to-mass ratio of around 10 μC g-1 or higher will need to take account of magnetic field effects during orbital manoeuvres. The magnetic field can provide an extra source of deceleration and deflection, and allow capture on to closer orbits around a target star. However, flipping the sign of the sailcraft's charge can radically change resulting trajectories, resulting in complex loop-de-loops around magnetic field lines and essentially random ejection from the star system. Even on well-behaved trajectories, the field can generate off-axis deflections at α Centauri that, while minor, can result in very poor targeting of the final destination (Proxima) post-assist. Fortunately for Breakthrough Starshot, nanosails are less prone to charging en route than their heavier counterparts, but can still accrue relatively high charge at both the origin and destination, when travelling at low speeds. Photogravimagnetic assists are highly non-trivial, and require careful course correction to mitigate against unwanted changes in trajectory.

  2. Accuracy of a Diagnostic Algorithm to Diagnose Breakthrough Cancer Pain as Compared With Clinical Assessment.

    Science.gov (United States)

    Webber, Katherine; Davies, Andrew N; Cowie, Martin R

    2015-10-01

    Breakthrough cancer pain (BTCP) is a heterogeneous condition, and there are no internationally agreed standardized criteria to diagnose it. There are published algorithms to assist with diagnosis, but these differ in content. There are no comparative data to support use. To compare the diagnostic ability of a simple algorithm against a comprehensive clinical assessment to diagnose BTCP and to assess if verbal rating descriptors can adequately discriminate controlled background pain. Patients with cancer pain completed a three-step algorithm with a researcher to determine if they had controlled background pain and BTCP. This was followed by a detailed pain consultation with a clinical specialist who was blinded to the algorithm results and determined an independent pain diagnosis. The sensitivity, specificity, and positive and negative predictive values were calculated for the condition of BTCP. Further analysis determined which verbal pain severity descriptors corresponded with the condition of controlled background pain. The algorithm had a sensitivity of 0.54 and a specificity of 0.76 in the identification of BTCP. The positive predictive value was 0.7, and the negative predictive value was 0.62. The sensitivity of a background pain severity rating of mild or less to accurately categorize controlled background pain was 0.69 compared with 0.97 for severity of moderate or less; however, this was balanced by a higher specificity rating for mild or less, 0.78 compared with 0.2. The diagnostic breakthrough pain algorithm had a good positive predictive value but limited sensitivity using a cutoff score of "mild" to define controlled background pain. When the cutoff level was changed to moderate, the sensitivity increased, but specificity reduced. A comprehensive clinical assessment remains the preferred method to diagnose BTCP. Copyright © 2015 American Academy of Hospice and Palliative Medicine. Published by Elsevier Inc. All rights reserved.

  3. Tsetse Fly Genome Breakthrough: The FAO and IAEA Crack the Code

    International Nuclear Information System (INIS)

    Dixit, Aabha

    2014-01-01

    With the breakthrough in sequencing the genome of the tsetse fly species Glossina morsitans in April 2014, another milestone has been achieved in helping to solve a problem that has had horrendous ramifications for Africa. Finding a solution to the havoc created by tsetse flies to livestock has been a major challenge for the combined scientific efforts of the IAEA and the Food and Agriculture Organization of the United Nations (FAO), as well as for the World Health Organization (WHO), which has focused on combating human sleeping sickness. Joint research over the past decades to block the spread of severe infection from tsetse flies resulted in the introduction by the FAO and IAEA of the environmentally friendly sterile insect technique (SIT), a biologically-based method for the management of key insect pests of agricultural, medical and veterinary importance. A form of insect birth control, the SIT involves releasing mass-bred male flies that have been sterilized by low doses of radiation into infested areas, where they mate with wild females. These do not produce offspring and, as a result, the technique can suppress and, if applied systematically on an area-wide basis, eventually eradicate populations of wild flies. The newly acquired knowledge of the tsetse fly genome provides a wealth of information for the improvement of the entire SIT package and can help unravel interactions between tsetse flies, symbionts and trypanosomes. The decoding of the genome was detailed in a press release issued by the IAEA on 24 April 2014 entitled Tsetse Fly Genome Breakthrough Brings Hope for African Farmers. Tsetse flies were successfully eradicated in 1997 from the Tanzanian island of Zanzibar using the SIT. Ethiopia and Senegal are making significant progress in infested areas with the same method. The FAO and IAEA are helping 14 countries control tsetse populations through applying area-wide integrated pest management approaches

  4. Nuclear fission, today and tomorrow. From renaissance to technological breakthrough (generation IV) - Part II

    International Nuclear Information System (INIS)

    Van Goethem, Georges

    2010-01-01

    This paper is an overview of the current Euratom FP-7 research and training actions in innovative nuclear fission reactors and fuel cycle technologies, including partitioning and transmutation. It is based on the more than 40 invited lectures that were delivered by research project coordinators and by keynote speakers at the FISA-2009 Conference, organised by the European Commission DG Research/Euratom. The education and training programmes in nuclear fission and radiation protection are also discussed, aiming at continuously increasing the level of nuclear competences across the EU. It is necessary to consider the most recent nuclear fission technologies (Generations of Nuclear Power Plants): - GEN II: safety and reliability of nuclear facilities and energy independence; - GEN III: continuous improvement of safety and reliability, and increased industrial competitiveness in a growing energy market; - GEN IV: for increased sustainability, and proliferation resistance. The focus in this paper is on the design objectives and research issues associated to Generations IV systems that have been agreed upon internationally. Their benefits are discussed according to a series of ambitious criteria or technology goals established at the international level. One will have to produce not only electricity at lower costs but also heat at very high temperatures, while exploiting a maximum of fissile and fertile matters, and recycling all actinides, under safe and reliable conditions. Scientific viability studies and technological performance tests for each Generation IV system are now being carried out in many laboratories world-wide, in line with the intergovernmental GIF agreement. The ultimate phase of commercial deployment is foreseen for 2040. (orig.)

  5. Multi-centre European study of breakthrough cancer pain: pain characteristics and patient perceptions of current and potential management strategies

    DEFF Research Database (Denmark)

    Davies, Andrew; Zeppetella, Giovambattista; Andersen, Steen

    2011-01-01

    This study involved 320 cancer patients from four Northern European countries. Patients with breakthrough pain were questioned about the characteristics of their pain, the current management of their pain, and the acceptability/utility of alternative routes of administration. The median number of...

  6. Geopolitics of Quantum Buddhism: Our Pre-Hydrocarbon Tao Future (No Breakthrough at the Rio+20 Summit)

    Science.gov (United States)

    Bajrektarevic, Anis

    2013-01-01

    From Rio to Rio with Kyoto, Copenhagen and Durban in between, the conclusion remains the same: we fundamentally disagree on realities of this planet and the ways we can address them. A decisive breakthrough would necessitate both wider contexts and a larger participatory base so as to identify problems, formulate policies, and broaden and…

  7. Parameterizing the Leaching Surface by Combining Curve-Fitting for Solute Breakthrough and for Spatial Solute Distribution

    NARCIS (Netherlands)

    Bloem, E.; Gee, de M.; Rooij, de G.H.

    2012-01-01

    Multi-compartment samplers (MCSs) measure unsaturated solute transport in space and time at a given depth. Sorting the breakthrough curves (BTCs) for individual compartments in descending order of total solute amount and plotting in 3D produces the leaching surface. The leaching surface is a useful

  8. Application of the rainfall infiltration breakthrough (RIB) model for groundwater recharge estimation in west coastal South Africa

    CSIR Research Space (South Africa)

    Sun, X

    2013-04-01

    Full Text Available level fluctuations (WLF) on a monthly basis was proposed in the rainfall infiltration breakthrough (RIB) model for the purpose of groundwater recharge estimation. In this paper, the physical meaning of parameters in the CRD and previous RIB models...

  9. Prediction of Breakthrough Curves for Conservative and Reactive Transport from the Structural Parameters of Highly Heterogeneous Media

    Energy Technology Data Exchange (ETDEWEB)

    Hansen, Scott [Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Haslauer, Claus P. [Univ. of Tubingen (Germany); Cirpka, Olaf A. [Univ. of Tubingen (Germany); Vesselinov, Velimir Valentinov [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-01-05

    The key points of this presentation were to approach the problem of linking breakthrough curve shape (RP-CTRW transition distribution) to structural parameters from a Monte Carlo approach and to use the Monte Carlo analysis to determine any empirical error

  10. Comparing Adoption of Breakthrough and "Me-too" Drugs among Medicare Beneficiaries: A Case Study of Dipeptidyl Peptidase-4 Inhibitors.

    Science.gov (United States)

    Hernandez, Inmaculada; Zhang, Yuting

    2017-06-01

    "Me-too" drugs are new pharmaceuticals with the mechanism of action of an existing drug and are considered less innovative than breakthrough drugs. The objective of this study was to evaluate whether the adoption patterns of the breakthrough drug sitagliptin and the "me-too" drug saxagliptin differed; and to assess whether the patterns differed between Medicare stand-alone (PDP) and Medicare-Advantage Part D (MA-PD) plans. Pharmacy claims from a 5% random sample of Medicare Part D beneficiaries were used to identify all prescriptions filled for sitagliptin (breakthrough drug) and saxagliptin ("me-too" drug) between October 1, 2006 and December 31, 2011. The number of new sitagliptin and saxagliptin users by month and type of plan were plotted, and Bass diffusion models were constructed to estimate the rate of diffusion. Sitagliptin had a longer adoption life than saxagliptin, and its adoption was quicker among MA-PD than PDP beneficiaries: it peaked at 51 and 66.7 months after its approval, respectively. However, the adoption of saxagliptin did not differ by type of plan: it peaked at 20.5 months in PDP and 22.9 months in MA-PD. At the end of our study, the market share of the innovative drug sitagliptin measured as the cumulative number of users since market entry was almost nine times higher than the "me-too" drug, saxagliptin. The breakthrough drug sitagliptin had a much longer adoption life compared to the "me-too" drug saxagliptin, and the breakthrough drug sitagliptin was adopted quicker among managed care plans compared to PDP plans.

  11. Recent breakthroughs and themes in hydrology, from climate to the water-food-energy nexus

    Science.gov (United States)

    Montanari, A.

    2017-12-01

    The last decades marked a significant change in geosciences. Increasing communication, observations, computing capabilities and opportunities to make dissemination stimulated a rapid increase of the number of publications and scientific forums. On the one hand this development is undoubtedly positive. In fact, it provides more and more opportunities to young and experienced scientists to elaborate innovative ideas and to establish cooperation. On the other hand, the proliferation of information, communication and publications makes the identification of key ideas and contributions definitely more challenging. Notwithstanding the above development, Water Resources Research (WRR) provides an ideal perspective to elaborate a picture of recent breakthroughs in hydrology. In fact, despite the increasing number of submissions and the progress of time, WRR kept a rigorous attitude to assess manuscripts by evaluating their relevance to emerging environmental and societal challenges.To get a long term perspective of breakthroughs in hydrology, it is interesting to compare the two anniversary special sections published so far in WRR, namely, the 50th anniversary special section "Legacy and perspectives for the science of hydrology", and "Trends and Directions in Hydrology", that was edited by Steven Burges in 1986 to celebrate the 20th anniversary of the journal. The above comparison highlights that the traditional break-up of hydrology into sub-disciplines, each focusing on separate components of the water cycle, has given way to a more interconnected, interdisciplinary research on a wide range of spatial and temporal scales, and interactions between water, society, earth and biological systems.This talk will present a voyage through the WRR history to highlight recent advances and topical themes. An attempt to develop a vision for the future of WRR and hydrology will be presented. Water will become more and more the regulator of social dynamics, including economy, politics

  12. Pharmacogenetic evaluation to assess breakthrough psychosis with aripiprazole long-acting injection: a case report.

    Science.gov (United States)

    Eum, Seenae; Schneiderhan, Mark E; Brown, Jacob T; Lee, Adam M; Bishop, Jeffrey R

    2017-07-03

    Given the complex nature of symptom presentation and medication regimens, psychiatric clinics may benefit from additional tools to personalize treatments. Utilizing pharmacogenetic information may be helpful in assessing unique responses to therapy. We report herein a case of wearing-off phenomena during treatment with aripiprazole long-acting injectable (LAI) and a proof of concept strategy of how pharmacogenetic information may be used to assess possible genetic factors and also hypothesize potential mechanisms for further study. A 51-year-old African American male with schizoaffective disorder was referred to a psychiatric clinic for medication management. After unsuccessful trials of multiple antipsychotics, oral aripiprazole was initiated (up to 30 mg/day) and transitioned to aripiprazole LAI with symptom improvement. At a high dose of aripiprazole LAI (400 mg Q3wks), the patient experienced breakthrough symptoms approximately 3 days prior to his next injection. Various considerations were examined to explain his atypical dose requirements, including but not limited to pharmacogenetic influences. Pharmacogenetic testing ruled out genetic influences on drug metabolism but noted a -141C Del variant in the dopamine-D2 receptor (DRD2) gene associated in prior studies of poor-response to antipsychotics. At this time, a new formulation, aripiprazole lauroxil, was explored due to its availability in higher dose options. Transition to the new formulation (882 mg Q4wks) greatly improved and stabilized the patient's symptoms with no breakthrough psychosis. Comparable daily dose equivalents were achieved with two different formulations due to the Q3wks vs Q4wks dosing strategies, although the two agents have some differences in pharmacokinetic profiles. We report a case of a patient experiencing wearing-off symptoms with aripiprazole LAI who benefited from switching to aripiprazole lauroxil. Pharmacogenetic testing revealed normal activity for relevant metabolism

  13. Expedited Programs for Serious Conditions: An Update on Breakthrough Therapy Designation.

    Science.gov (United States)

    Kwok, Martin; Foster, Theresa; Steinberg, Michael

    2015-09-01

    Our aim was to describe the regulatory pathways made available by the US Food and Drug Administration (FDA) to expedite the drug development and approval process, with a focus on the benefits and limitations of the Breakthrough Therapy Designation (BTD) pathway. Published materials consisting of journal articles, press releases, government documents, and news articles from pharmaceutical publishers were identified through online databases (ie, Medline and Scopus), the FDA website, and Internet search engines (eg, Google). To encourage pharmaceutical innovation and increase the number of products being approved each year, the FDA has introduced 4 expedited regulatory pathways to accelerate the drug development and approval process. The most recent program, enacted in July 2012, was BTD that is given to drugs that treat a serious or life-threatening disease or condition; and preliminary clinical evidence suggests the potential for these drugs to provide a substantial improvement over the current standard of care. The primary basis for the creation of BTD is to provide patients with serious conditions with earlier access to FDA-approved medications. In 2014, 22% of the new molecular entities approved within the Center for Drug Evaluation and Research had BTD status, as opposed to only 11% in 2013, which indicates both the popularity and success of this expedited pathway. Additionally, the creation of BTD has produced a more collaborative working relationship between the pharmaceutical industry and the FDA because both parties have a vested interest in the drug's success. Some of the more notable concerns surrounding these approved breakthrough therapies have been the abbreviated tolerability and efficacy evidence available from accelerated clinical development programs, ensuring the manufacturing aspects keep pace with these accelerated clinical programs, and finally, managing the strain on resources for both the pharmaceutical companies and the FDA. BTD has already

  14. Solute breakthrough during repeated ponded infiltration into columns of repacked sand and heterogeneous soil

    Science.gov (United States)

    Sobotkova, M.; Snehota, M.; Cislerova, M.

    2010-12-01

    Water flow during recurrent ponded infiltration may be affected by presence of entrapped air in heterogeneous soils. It is likely that presence of entrapped air influences also the solute transport. The aim of this contribution is to experimentally investigate the effect of entrapped air on tracer breakthrough by means of experiments conducted on two large samples in laboratory. A modified recurrent ponded infiltration, conducted on each soil sample consisted of three infiltration runs. The same level of ponding was maintained during each infiltration run at the top of the sample. Water drained freely through the perforated plate at the bottom of the sample. First infiltration run was done into naturally dry soil while two subsequent runs were conducted into wetter soil. It is assumed that infiltration in wet media causes more air trapping and reduced effective saturated hydraulic conductivity in some heterogeneous soils. In order to demonstrate effect of entrapped air dissolution the third infiltration was conducted with partly de-aerated water. The experiments were conducted using an automated set-up with frequent monitoring of pressure heads in three tensiometers, water contents in three TDR probes, cumulative infiltration and outflow, weight of the sample monitored by load cell and concentration of oxygen in the effluent. During each infiltration run the concentration pulse of bromide tracer was applied at the top of the soil core during steady state flow. Bromide breakthrough curve was acquired by electrochemical in-line analysis of bromide ions in the effluent. The results of the experiment conducted on repacked sand show that the steady state outflow rates measured during the first and second infiltration run were similar, while the outflow rates during third infiltration runs were steadily increasing. The shapes of all three BTC’s plotted against the cumulative outflow were nearly identical. In contrast to the repacked sand, steady state outflow rates

  15. Tamoxifen for the treatment of breakthrough bleeding with the etonogestrel implant: a randomized controlled trial.

    Science.gov (United States)

    Simmons, Katharine B; Edelman, Alison B; Fu, Rongwei; Jensen, Jeffrey T

    2017-02-01

    The etonogestrel (ENG) subdermal implant can cause frequent breakthrough bleeding in some users. The objective of this study was to evaluate whether a short course of tamoxifen reduces bleeding/spotting days compared to placebo in ENG implant users. In this double-blind trial, we randomized ENG implant users with frequent or prolonged bleeding or spotting to tamoxifen 10 mg or placebo twice daily for 7 days, to be started after 3 consecutive days of bleeding/spotting. Treatment was repeated as needed up to three times in 180 days. Subjects completed a daily text message bleeding diary. A sample size of 56 provided 80% power to detect a difference of 6 days of bleeding/spotting per 30 days by two-sample t test. Ovulation was monitored by urinary metabolites of progesterone. From March 2014 to February 2015, 56 women enrolled. Fifty-one completed at least 30 days of follow up, and 34 completed 180 days. Compared to women randomized to placebo, women randomized to tamoxifen reported 5 fewer days of bleeding/spotting over 30 days (95% confidence interval [CI] -9.9 to -0.05, p=.05), and 15.2 more continuous bleeding-free days (95% CI 2.8-27.5 days, p=.02) after first use of study drug. Conclusions could not be drawn after 30 days due to higher-than-expected dropout. No ovulation was detected. First use of tamoxifen by ENG implant users reduces bleeding/spotting days and provides a longer cessation of bleeding/spotting than placebo, without compromising ovulation suppression. Further study is needed to determine whether this effect is maintained with repeat use. Women with frequent ENG implant-related breakthrough bleeding may experience a reduction in bleeding/spotting days and an increase in continuous bleeding-free days in the month following first use of tamoxifen. This short course of tamoxifen was well tolerated with bleeding cessation noted within a median of 5 days. Copyright © 2017 Elsevier Inc. All rights reserved.

  16. FRB121102: First detection across 5 - 8 GHz and spectral properties from the Breakthrough Listen instrument

    Science.gov (United States)

    Gajjar, Vishal; Siemion, Andrew; MacMohan, David; Croft, Steve; Hellbourg, Greg; Isaacson, Howard; Enriquez, J. Emilio; Price, Daniel; Lebofsky, Matt; De Boer, David; Werthimer, Dan; Hickish, Jack; Brinkman, Casey; Chatterjee, Shami; Ransom, Scott M.; Law, Casey; Hessels, Jason W. T.; Cordes, Jim; Spitler, Laura; Lynch, Ryan; McLaughlin, Maura; Scholz, Paul; Marcote, Benito; Bower, Geoffrey C.; Tendulkar, Shriharsh

    2018-01-01

    Fast Radio Bursts (FRBs) are some of the most energetic and enigmatic events in the Universe. The origin of these sources is among the most challenging questions of modern-day astrophysics. Thus, it is imperative to understand the properties of these bursts across a range of radio frequencies. Among the known FRBs, FRB121102 is the only source known to show repeated bursts [Spitler et al., Nature, 531, 7593 202-205, 2016], which can allow a detailed investigation of various origin models. In August 2017, we initiated a campaign observing FRB 121102 using the Breakthrough Listen Digital Backend with the C-band receiver at the Robert C. Byrd Green Bank Telescope (GBT). We recorded baseband voltage data across 5.4 GHz of bandwidth, completely covering the C-band receiver's nominal 4-8 GHz band [MacMahon et al. arXiv:1707.06024v2]. The recorded data were searched for dispersed pulses consistent with the known dispersion measure of FRB 121102 (557 pc cm-3) using high-speed GPU software tools. We detected 21 bursts above our detection threshold of 6 sigmas in the first 60-minutes, out of which 18 occurred in the first 30-minutes only. To our knowledge, this is the highest event rate seen for FRB121102 at any observing frequency. These observations are the highest frequency and widest bandwidth detection of bursts from FRB 121102 (or any other FRB) obtained to-date. We note that individual bursts show marked changes in spectral extent ranging from hundreds of MHz to several GHz. We have used high frequency dynamic spectra of these bursts to estimate the characteristic scintillation bandwidth and correlation time-scale. We also found distinctive temporal structures, separated by a few milliseconds, in three of the strongest bursts, with each sub-structure exhibiting varied spectral features. We will discuss our findings and how these detections of FRB 121102 around 8 GHz opens up a new regime in scrutinizing various origin models. We will also highlight the unique

  17. The Breakthrough Listen Initiative and the Future of the Search for Intelligent Life

    Science.gov (United States)

    Enriquez, J. Emilio; Siemion, Andrew; Croft, Steve; Hellbourg, Greg; Lebofsky, Matt; MacMahon, David; Price, Danny; DeBoer, David; Werthimer, Dan

    2017-05-01

    Unprecedented recent results in the fields of exoplanets and astrobiology have dramatically increased the interest in the potential existence of intelligent life elsewhere in the galaxy. Additionally, the capabilities of modern Searches for Extraterrestrial Intelligence (SETI) have increased tremendously. Much of this improvement is due to the ongoing development of wide bandwidth radio instruments and the Moore's Law increase in computing power over the previous decades. Together, these instrumentation improvements allow for narrow band signal searches of billions of frequency channels at once.The Breakthrough Listen Initiative (BL) was launched on July 20, 2015 at the Royal Society in London, UK with the goal to conduct the most comprehensive and sensitive search for advanced life in humanity's history. Here we detail important milestones achieved during the first year and a half of the program. We describe the key BL SETI surveys and briefly describe current facilities, including the Green Bank Telescope, the Automated Planet Finder and the Parkes Observatory. We also mention the ongoing and potential collaborations focused on complementary sciences, these include pulse searches of pulsars and FRBs, as well as astrophysically powered radio emission from stars targeted by our program.We conclude with a brief view towards future SETI searches with upcoming next-generation radio facilities such as SKA and ngVLA.

  18. Breakthrough invasive fungal diseases during voriconazole treatment for aspergillosis: A 5-year retrospective cohort study.

    Science.gov (United States)

    Kim, Sun Bean; Cho, Sung-Yeon; Lee, Dong-Gun; Choi, Jae-Ki; Lee, Hyo-Jin; Kim, Si-Hyun; Park, Sun Hee; Choi, Su-Mi; Choi, Jung-Hyun; Yoo, Jin-Hong; Lee, Jong-Wook

    2017-04-01

    Breakthrough invasive fungal diseases (bIFDs) during voriconazole treatment are concerning, as they are associated with high rates of mortality and pathogen distribution. To evaluate the prevalence, incidence, patient characteristics, including IFD events, and overall mortality of bIFDs during voriconazole treatment for invasive aspergillosis (IA). We retrospectively analyzed the medical records of consecutive patients who had undergone voriconazole treatment for IA and who had bIFD events between January 2011 and December 2015. Eleven bIFD events occurred in 9 patients. The prevalence and incidence of bIFDs were 2.25% (9/368) and 0.22 cases per year, respectively. Overall mortality was 44.4% (4/9). The severity of the illness and persistence of immunodeficiency, mixed infection, and low concentration of the treatment drug at the site of infection were identified as possible causes of bIFDs. Seven of 11 events (63.6%) required continued voriconazole treatment with drug level monitoring. In 4 (36.3%) cases, the treatment was changed to liposomal amphotericin B. Two cases resulted in surgical resection (18.2%). Clinicians should be aware that bIFDs during voriconazole treatment for IA can occur, and active therapeutic approaches are required in these cases. © The Author 2016. Published by Oxford University Press on behalf of The International Society for Human and Animal Mycology.

  19. Tracking tracer breakthrough in the hyporheic zone using time‐lapse DC resistivity, Crabby Creek, Pennsylvania

    Science.gov (United States)

    Nyquist, Jonathan E.; Toran, Laura; Fang, Allison C.; Ryan, Robert J.; Rosenberry, Donald O.

    2010-01-01

    Characterization of the hyporheic zone is of critical importance for understanding stream ecology, contaminant transport, and groundwater‐surface water interaction. A salt water tracer test was used to probe the hyporheic zone of a recently re‐engineered portion of Crabby Creek, a stream located near Philadelphia, PA. The tracer solution was tracked through a 13.5 meter segment of the stream using both a network of 25 wells sampled every 5–15 minutes and time‐lapse electrical resistivity tomographs collected every 11 minutes for six hours, with additional tomographs collected every 100 minutes for an additional 16 hours. The comparison of tracer monitoring methods is of keen interest because tracer tests are one of the few techniques available for characterizing this dynamic zone, and logistically it is far easier to collect resistivity tomographs than to install and monitor a dense network of wells. Our results show that resistivity monitoring captured the essential shape of the breakthrough curve and may indicate portions of the stream where the tracer lingered in the hyporheic zone. Time‐lapse resistivity measurements, however, represent time averages over the period required to collect a tomographic data set, and spatial averages over a volume larger than captured by a well sample. Smoothing by the resistivity data inversion algorithm further blurs the resulting tomograph; consequently resistivity monitoring underestimates the degree of fine‐scale heterogeneity in the hyporheic zone.

  20. Making Breakthroughs in the Turbulent Decade: China's Space Technology During the Cultural Revolution.

    Science.gov (United States)

    Li, Chengzhi; Zhang, Dehui; Hu, Danian

    2017-09-01

    This article discusses why Chinese space programs were able to develop to the extent they did during the turbulent decade of the Cultural Revolution (1966-1976). It first introduces briefly what China had accomplished in rocket and missile technology before the Cultural Revolution, including the establishment of a system for research and manufacturing, breakthroughs in rocket technology, and programs for future development. It then analyzes the harmful impacts of the Cultural Revolution on Chinese space programs by examining activities of contemporary mass factions in the Seventh Ministry of Machinery Industry. In the third section, this article presents the important developments of Chinese space programs during the Cultural Revolution and explores briefly the significance of these developments for the future and overall progress in space technology. Finally, it discusses the reasons for the series of developments of Chinese space technology during the Cultural Revolution. This article concludes that, although the Cultural Revolution generated certain harmful impacts on the development of Chinese space technology, the Chinese essentially accomplished their scheduled objectives in their space program, both because of the great support of top Chinese leaders, including the officially disgraced Lin Biao and the Gang of Four, and due to the implementation of many effective special measures. Copyright © 2017 Elsevier Ltd. All rights reserved.

  1. Point Climat no. 33 'International Climate Negotiations - COP 19: do not underestimate the MRV breakthrough'

    International Nuclear Information System (INIS)

    Dupont, Marion; Morel, Romain; Bellassen, Valentin; Deheza, Mariana

    2013-01-01

    Among the publications of CDC Climat Research, 'Climate Briefs' presents, in a few pages, hot topics in climate change policy. This issue addresses the following points: For those who expect 'binding' emission reductions targets in the future international climate agreement to be signed in Paris in 2015, the Warsaw Conference (November 11 to 23, 2013) yielded as much progress as it could. That means little beyond a timetable. However, for those who consider the UNFCCC as the depository of common tools on the monitoring, reporting and verification (MRV) of emissions, actions and financing, Warsaw represents a major breakthrough. For the first time, developing countries - at least those wishing to access climate finance for forests - will abide by MRV procedures similar to those governing the greenhouse gas inventories of industrialized countries. Forestry may be seen as a first sectoral NAMA, and it would be difficult to ignore the Warsaw decisions for the future definition of MRV procedures of NAMAs. In spite of the establishment of the Warsaw International Mechanism for Loss and Damage, low outputs on other issues show that achieving an agreement at COP 21 will require significant political progress during the next 15 months

  2. Breakthrough reactions of iodinated and gadolinium contrast media after oral steroid premedication protocol.

    Science.gov (United States)

    Jingu, Akiko; Fukuda, Junya; Taketomi-Takahashi, Ayako; Tsushima, Yoshito

    2014-10-06

    Adverse reactions to iodinated and gadolinium contrast media are an important clinical issue. Although some guidelines have proposed oral steroid premedication protocols to prevent adverse reactions, some patients may have reactions to contrast media in spite of premedication (breakthrough reaction; BTR).The purpose of this study was to assess the frequency, type and severity of BTR when following an oral steroid premedication protocol. All iodinated and gadolinium contrast-enhanced radiologic examinations between August 2011 and February 2013 for which the premedication protocol was applied in our institution were assessed for BTRs. The protocol was applied to a total of 252 examinations (153 patients, ages 15-87 years; 63 males, 90 females). Of these, 152 were for prior acute adverse reactions to contrast media, 85 were for a history of bronchial asthma, and 15 were for other reasons. There were 198 contrast enhanced CTs and 54 contrast enhanced MRIs. There were nine BTR (4.5%) for iodinated contrast media, and only one BTR (1.9%) for gadolinium contrast media: eight were mild and one was moderate. No patient who had a mild index reaction (IR) had a severe BTR. Incidence of BTRs when following the premedication protocol was low. This study by no means proves the efficacy of premedication, but provides some support for following a premedication protocol to improve safety of contrast-enhanced examinations when prior adverse reactions are mild, or when there is a history of asthma.

  3. Breakthrough reactions of iodinated and gadolinium contrast media after oral steroid premedication protocol

    International Nuclear Information System (INIS)

    Jingu, Akiko; Fukuda, Junya; Taketomi-Takahashi, Ayako; Tsushima, Yoshito

    2014-01-01

    Adverse reactions to iodinated and gadolinium contrast media are an important clinical issue. Although some guidelines have proposed oral steroid premedication protocols to prevent adverse reactions, some patients may have reactions to contrast media in spite of premedication (breakthrough reaction; BTR). The purpose of this study was to assess the frequency, type and severity of BTR when following an oral steroid premedication protocol. All iodinated and gadolinium contrast-enhanced radiologic examinations between August 2011 and February 2013 for which the premedication protocol was applied in our institution were assessed for BTRs. The protocol was applied to a total of 252 examinations (153 patients, ages 15–87 years; 63 males, 90 females). Of these, 152 were for prior acute adverse reactions to contrast media, 85 were for a history of bronchial asthma, and 15 were for other reasons. There were 198 contrast enhanced CTs and 54 contrast enhanced MRIs. There were nine BTR (4.5%) for iodinated contrast media, and only one BTR (1.9%) for gadolinium contrast media: eight were mild and one was moderate. No patient who had a mild index reaction (IR) had a severe BTR. Incidence of BTRs when following the premedication protocol was low. This study by no means proves the efficacy of premedication, but provides some support for following a premedication protocol to improve safety of contrast-enhanced examinations when prior adverse reactions are mild, or when there is a history of asthma

  4. The development of new analgesics over the past 50 years: a lack of real breakthrough drugs.

    Science.gov (United States)

    Kissin, Igor

    2010-03-01

    Fifty-nine drugs identified as analgesics were introduced from 1960 to 2009 and remain in use. Seven can be regarded as having novel molecular targets; however, only one, sumatriptan, was sufficiently effective to motivate the introduction of many similar drugs acting at the same target (triptans). Publication productivity in the area of pain grew exponentially during this period. Pain-related publications on morphine were dominant among other analgesics. Very intensive research efforts directed at diverse molecular targets related to pain mechanisms produced thousands of publications, but those efforts have not yet yielded new analgesics with sufficient effectiveness to change the share of publications on opioids or nonsteroidal antiinflammatory drugs. Morphine and aspirin, introduced for the treatment of pain more than a century ago, continue to dominate biomedical publications despite their limited effectiveness in many areas (e.g., neuropathic pain) and multiple serious adverse effects. The present assessment reveals the lack of real breakthroughs in analgesic drug development despite intense research efforts. Possible factors contributing to the apparent drought of novel analgesics are discussed.

  5. Do It Yourself (DIY) Earth Science Collaboratories Using Best Practices and Breakthrough Technologies

    Science.gov (United States)

    Stephan, E.

    2017-12-01

    The objective of published earth science study data results and literature on the Web should be to provide a means to integrate discoverable science resources through an open collaborative-Web. At the core of any open science collaborative infrastructure is the ability to discover, manage and ultimately use relevant data accessible to the collaboration. Equally important are the relationships between people, applications, services, and publications, which capture critical contextual knowledge that enable their effective use. While contributions of either irreproducible or costly data can be a great asset the inability of users being able to use the data intelligently or make sense of it, makes these investments not usable. An ability to describe ad-hoc discoverable usage methodologies, provide feedback to data producers, and identify and cite data in a systematic way by leveraging existing Web-enabled off the shelf technology is needed. Fortunately many break-through advancements in data publication best practices and government, open source, and commercial investments support consumers who can provide feedback, share experiences, and contribute back to the earth science ecosystem.

  6. Familial concordance for age at natural menopause: results from the Breakthrough Generations Study.

    Science.gov (United States)

    Morris, Danielle H; Jones, Michael E; Schoemaker, Minouk J; Ashworth, Alan; Swerdlow, Anthony J

    2011-09-01

    Existing estimates of the heritability of menopause age have a wide range. Furthermore, few studies have analyzed to what extent familial similarities might reflect shared environment, rather than shared genes. We therefore analyzed familial concordance for age at natural menopause and the effects of shared genetic and environmental factors on this concordance. Participants were 2,060 individuals comprising first-degree relatives, aged 31 to 90 years, and participating in the UK Breakthrough Generations Study. Menopause data were collected using a self-administered questionnaire and analyzed using logistic regression and variance-components models. Women were at an increased risk of early menopause (≤45 y) if their mother (odds ratio, 6.2; P menopause. Likewise, women had an increased risk of late menopause (≥54 y) if their relative had had a late menopause (mother: odds ratio, 6.1; P menopause age attributed to environmental factors shared by sisters. We confirm that early menopause aggregates within families and show, for the first time, that there is also strong familial concordance for late menopause. Both genes and shared environment were the source of variation in menopause age. Past heritability estimates have not accounted for shared environment, and thus, the effect of genetic variants on menopause age may previously have been overestimated.

  7. A BREAKTHROUGH VARICELLA: WILL A NEW VACCINATION SCHEDULE CHANGE THE SITUATION?

    Directory of Open Access Journals (Sweden)

    E.A. Vishneva

    2011-01-01

    Full Text Available Varicella — is a common viral infection that can cause complications and adverse outcome not only in children at risk, but also in healthy children and adults. Socio-economic burden of disease due to both-direct health care, costs — to seek medical care and treatment,  and indirect — social. The introduction of immunization after the development of live attenuated vaccine has shown impressive results provided high coverage of morbidity and mortality associated with chickenpox declined sharply. However, the development of infection in vaccinated patients — a breakthrough varicella may be related with the deterioration of post-vaccinal immunity with time,  and the primary tolerance and inability to induce an effective immune response. Despite the undeniable progress in the prevention of chicken pox since the early 2000s. the world’s a discussion about the need to move to the two-dose vaccination scheme in national immunization programs has been started. Key words: vaccination, children, chickenpox, varicella, breakout. (Pediatric pharmacology. — 2011; 8 (6: 18–22.

  8. EGOLOGY: psychological spatial breakthrough for social redirection--multidisciplinary spatial focus for individuals/humankind

    Science.gov (United States)

    Thompson, Robert A.

    1991-08-01

    Every age is marked by its physical tools. But today''s Space Age is unique because it is the spatial vantage itself which becomes a tool. It is a mental breakthrough, permitting us to contrast our outward-looking dreams with an inward-focused reality that can psychologically redirect the future for humankind. As the spatial perspective moves our eye from the surface of the earth to a remote point above its surface, our earth-based myopia disappears. We see all former parameters simultaneously, far out as well as close up. Physical differences are minimized, only natural demarcations remain, while similarities and interconnections abound. With the evolution of the Space Age this new awareness stimulated first the ecological movement, raising public consciousness about the physical environment, and then socially about human rights worldwide. From this intellectual quantum jump we realized that planetary interconnections permeated earth''s biosphere and on into the physical-chemical core. Like the ecological shell that identified ecology as the dynamic balance of all organisms interacting with their thermodynamic energy environment, a new outer shell, an egological one, or egoshell, is now needed to deal with multidisciplinary informational dynamics socially (acquisition for educational dissemination and perceptual workplace use). Individuals within their total spatial environment--the conceptual energy/human resource balance identified as EGOLOGY--would then be able to network society, inspiring mental fitness for an individual enlightenment to occur.

  9. Engineering excellence in breakthrough biomedical technologies: bioengineering at the University of California, Riverside.

    Science.gov (United States)

    Schultz, Jane S; Rodgers, V G J

    2012-07-01

    The Department of Bioengineering at the University of California, Riverside (UCR), was established in 2006 and is the youngest department in the Bourns College of Engineering. It is an interdisciplinary research engine that builds strength from highly recognized experts in biochemistry, biophysics, biology, and engineering, focusing on common critical themes. The range of faculty research interests is notable for its diversity, from the basic cell biology through cell function to the physiology of the whole organism, each directed at breakthroughs in biomedical devices for measurement and therapy. The department forges future leaders in bioengineering, mirroring the field in being energetic, interdisciplinary, and fast moving at the frontiers of biomedical discoveries. Our educational programs combine a solid foundation in bio logical sciences and engineering, diverse communication skills, and training in the most advanced quantitative bioengineering research. Bioengineering at UCR also includes the Bioengineering Interdepartmental Graduate (BIG) program. With its slogan Start-Grow-Be-BIG, it is already recognized for its many accomplishments, including being third in the nation in 2011 for bioengineering students receiving National Science Foundation graduate research fellowships as well as being one of the most ethnically inclusive programs in the nation.

  10. Computational tools for Breakthrough Propulsion Physics: State of the art and future prospects

    International Nuclear Information System (INIS)

    Maccone, Claudio

    2000-01-01

    To address problems in Breakthrough Propulsion Physics (BPP) one needs sheer computing capabilities. This is because General Relativity and Quantum Field Theory are so mathematically sophisticated that the amount of analytical calculations is prohibitive and one can hardly do all of them by hand. In this paper we make a comparative review of the main tensor calculus capabilities of the three most advanced and commercially available 'symbolic manipulator' codes: Macsyma, Maple V and Mathematica. We also point out that currently one faces such a variety of different conventions in tensor calculus that it is difficult or impossible to compare results obtained by different scholars in General Relativity and Quantum Field Theory. Mathematical physicists, experimental physicists and engineers have each their own way of customizing tensors, especially by using the different metric signatures, different metric determinant signs, different definitions of the basic Riemann and Ricci tensors, and by adopting different systems of physical units. This chaos greatly hampers progress toward the chief NASA BPP goal: the design of the NASA Warp Drive. It is thus concluded that NASA should put order by establishing international standards in symbolic tensor calculus and enforcing anyone working in BPP to adopt these NASA BPP Standards

  11. Breakthrough during air sampling with polyurethane foam: What do PUF 2/PUF 1 ratios mean?

    Science.gov (United States)

    Bidleman, Terry F; Tysklind, Mats

    2018-02-01

    Frontal chromatography theory is applied to describe movement of gaseous semivolatile organic compounds (SVOCs) through a column of polyurethane foam (PUF). Collected mass fractions (F C ) are predicted for sample volume/breakthrough volume ratios (τ = V S /V B ) up to 6.0 and PUF bed theoretical plate numbers (N) from 2 to 16. The predictions assume constant air concentrations and temperatures. Extension of the calculations is done to relate the collection efficiency of a 2-PUF train (F C1+2 ) to the PUF 2/PUF 1 ratio. F C1+2 exceeds 0.9 for PUF 2/PUF 1 ≤ 0.5 and lengths of PUF commonly used in air samplers. As the PUF 2/PUF 1 ratio approaches unity, confidence in these predictions is limited by the analytical ability to distinguish residues on the two PUFs. Field data should not be arbitrarily discarded because some analytes broke through to the backup PUF trap. The fractional collection efficiencies can be used to estimate air concentrations from quantities retained on the PUF trap when sampling is not quantitative. Copyright © 2017 Elsevier Ltd. All rights reserved.

  12. Pore-scale analysis on the effects of compound-specific dilution on transient transport and solute breakthrough

    DEFF Research Database (Denmark)

    Rolle, Massimo; Kitanidis, Peter

    , a transient flux-related dilution index that allows quantifying the evolution of solute dilution at a given position along the main flow direction. For the different solute transport scenarios we obtained dilution breakthrough curves that complement and add important information to traditional solute......Compound-specific diffusivities significantly impact solute transport and mixing at different scales. Although diffusive processes occur at the small pore scale, their effects propagate and remain important at larger macroscopic scales [1]. In this pore-scale modeling study in saturated porous...... media we show that compound-specific effects are important not only at steady-state and for the lateral displacement of solutes with different diffusivities but also for transient transport and solute breakthrough [2]. We performed flow and transport simulations in two-dimensional pore-scale domains...

  13. Significant interaction between activated charcoal and antiretroviral therapy leading to subtherapeutic drug concentrations, virological breakthrough and development of resistance.

    Science.gov (United States)

    Tseng, Alice L; la Porte, Charles; Salit, Irving E

    2013-01-01

    A 42-year-old, treatment-experienced woman, virologically suppressed on tenofovir/emtricitabine and boosted atazanavir, experienced virological breakthrough, drop in CD4(+) T-cell count and undetectable drug concentrations. Adherence to treatment was confirmed, but repeat testing yielded similar results. After 2 months, the patient stated that she had been taking activated charcoal to manage gastrointestinal symptoms associated with her combination antiretroviral therapy, but she had recently discontinued the charcoal. Atazanavir concentrations were therapeutic but the patient's viral load rebounded and genotype testing revealed new reverse transcriptase mutations. The patient was changed to zidovudine, lamivudine, and boosted darunavir and achieved viral suppression. At 1 year follow-up, her viral load remained activated charcoal and atazanavir/ritonavir leading to virological breakthrough and development of resistance.

  14. Budget impact analysis of the fentanyl buccal tablet for treatment of breakthrough cancer pain

    Directory of Open Access Journals (Sweden)

    Darbà J

    2013-12-01

    Full Text Available Josep Darbà,1 Lisette Kaskens,2 Rainel Sánchez-de la Rosa31University of Barcelona, Barcelona, 2BCN Health Economics and Outcomes Research SL, Barcelona, 3Medical and HEOR Department, TEVA Pharmaceutical Industries Ltd, Madrid, SpainBackground: The purpose of this study was to assess the economic impact of the fentanyl buccal tablet for the management of breakthrough cancer pain (BTcP in Spain.Methods: A 4-year budget impact model was developed for the period 2012–2015 for patients with BTcP from the perspective of the Spanish National Health System. BTcP products included in this model were rapid-onset opioids containing fentanyl (buccal, sublingual, or nasal transmucosal. Prevalence data on cancer, BTcP, opioid use, and number of BTcP episodes were obtained from the literature. Input data on health care resources associated with opioid use and opioid-induced side effects were obtained by consulting experts in oncology from different Spanish hospitals. Resources used included drugs, medical and emergency visits, other nonpharmacologic treatments, and treatment of opioid-induced side effects. Unit costs were obtained from the literature, and a 3% discount rate was applied to costs. Based on the unit costs for drugs and health care resources, the annual BTcP treatment costs per patient associated with each fentanyl product were determined to estimate the overall budget impact based on the total treatment population and the percentage of drug utilization associated with each product. One-way sensitivity analyses were conducted to test the robustness of the model.Results: Patients treated with oral opioids for BTcP were estimated at 23,291 in 2012, with an increase up to 23,413 in 2015. The average annual budget savings, with an increase of fentanyl buccal tablets, fentanyl sublingual tablets, and intranasal fentanyl spray, and a decrease in oral transmucosal fentanyl citrate, was estimated at €2.6 million, which represents a 0.5% decrease in

  15. Efficacy, safety, and tolerability of fentanyl pectin nasal spray in patients with breakthrough cancer pain

    Directory of Open Access Journals (Sweden)

    Ueberall MA

    2016-08-01

    Full Text Available Michael A Ueberall,1 Stefan Lorenzl,2 Eberhard A Lux,3,4 Raymond Voltz,5 Michael Perelman6 1Institute of Neurological Sciences, Nuremberg, Germany; 2Institute of Nursing Science and Practice, Paracelsus Private Medical University of Salzburg, Salzburg, Austria; 3Faculty of Medicine, Witten/Herdecke University, Witten, Germany; 4Clinic for Pain and Palliative Care Medicine, St.- Marien-Hospital, Luenen, Germany; 5Department of Palliative Medicine, University Hospital Cologne, Cologne, Germany; 6Archimedes Development Ltd., Nottingham, United Kingdom Objective: Assessment of analgesic effectiveness, safety, and tolerability of fentanyl pectin nasal spray (FPNS in the treatment of breakthrough cancer pain (BTcP in routine clinical practice.Methods: A prospective, open-label, noninterventional study (4-week observation period, 3 month follow-up of opioid-tolerant adults with BTcP in 41 pain and palliative care centers in Germany. Standardized BTcP questionnaires and patient diaries were used. Evaluation was made of patient-reported outcomes with respect to “time to first effect”, “time to maximum effect”, BTcP relief, as well as changes in BTcP-related impairment of daily life activities, ­quality-of-life restrictions, and health care resource utilization.Results: A total of 235 patients were recruited of whom 220 completed all questionnaires and reported on 1,569 BTcP episodes. Patients reported a significant reduction of maximum BTcP intensity (11-stage numerical rating scale [0= no pain, 10= worst pain conceivable] with FPNS (mean ± standard deviation = 2.8±2.3 compared with either that reported at baseline (8.5±1.5, experienced immediately before FPNS application (7.4±1.7, or that achieved with previous BTcP medication (6.0±2.0; P<0.001 for each comparison. In 12.3% of BTcP episodes, onset of pain relief occurred ≤2 minutes and in 48.4% ≤5 minutes; maximum effects were reported within 10 minutes for 37.9% and within 15 minutes

  16. Cost-effectiveness analysis of oral fentanyl formulations for breakthrough cancer pain treatment.

    Science.gov (United States)

    Cortesi, Paolo Angelo; D'Angiolella, Lucia Sara; Vellucci, Renato; Allegri, Massimo; Casale, Giuseppe; Favaretti, Carlo; Kheiraoui, Flavia; Cesana, Giancarlo; Mantovani, Lorenzo Giovanni

    2017-01-01

    Breakthrough cancer Pain (BTcP) has a high prevalence in cancer population. Patients with BTcP reported relevant health care costs and poor quality of life. The study assessed the cost-effectiveness of the available Oral Fentanyl Formulations (OFFs) for BTcP in Italy. A decision-analytical model was developed to estimate costs and benefits associated with treatments, from the Italian NHS perspective. Expected reductions in pain intensity per BTcP episodes were translated into, percentage of BTcP reduction, resource use and Quality-Adjusted-Life-Years (QALYs). Relative efficacy, resources used and unit costs data were derived from the literature and validated by clinical experts. Probabilistic and deterministic sensitivity analyses were performed. At base-case analysis, Sublingual Fentanyl Citrate (FCSL) compared to other oral formulations reported a lower patient's cost (€1,960.8) and a higher efficacy (18.7% of BTcP avoided and 0.0507 QALYs gained). The sensitivity analyses confirmed the main results in all tested scenarios, with the highest impact reported by BTcP duration and health care resources consumption parameters. Between OFFs, FCSL is the cost-effective option due to faster reduction of pain intensity. However, new research is needed to better understand the economic and epidemiologic impact of BTcP, and to collect more robust data on economic and quality of life impact of the different fentanyl formulations. Different fentanyl formulations are available to manage BTcP in cancer population. The study is the first that assesses the different impact in terms of cost and effectiveness of OFFs, providing new information to better allocate the resources available to treat BTcP and highlighting the need of better data.

  17. The Breakthrough Listen Search for Intelligent Life: Target Selection of Nearby Stars and Galaxies

    Science.gov (United States)

    Isaacson, Howard; Siemion, Andrew P. V.; Marcy, Geoffrey W.; Lebofsky, Matt; Price, Danny C.; MacMahon, David; Croft, Steve; DeBoer, David; Hickish, Jack; Werthimer, Dan; Sheikh, Sofia; Hellbourg, Greg; Enriquez, J. Emilio

    2017-05-01

    We present the target selection for the Breakthrough Listen search for extraterrestrial intelligence during the first year of observations at the Green Bank Telescope, Parkes Telescope, and Automated Planet Finder. On the way to observing 1,000,000 nearby stars in search of technological signals, we present three main sets of objects we plan to observe in addition to a smaller sample of exotica. We chose the 60 nearest stars, all within 5.1 pc from the Sun. Such nearby stars offer the potential to observe faint radio signals from transmitters that have a power similar to those on Earth. We add a list of 1649 stars drawn from the Hipparcos catalog that span the Hertzprung-Russell diagram, including all spectral types along the main sequence, subgiants, and giant stars. This sample offers diversity and inclusion of all stellar types, but with thoughtful limits and due attention to main sequence stars. Our targets also include 123 nearby galaxies composed of a “morphological-type-complete” sample of the nearest spirals, ellipticals, dwarf spherioidals, and irregulars. While their great distances hamper the detection of technological electromagnetic radiation, galaxies offer the opportunity to observe billions of stars simultaneously and to sample the bright end of the technological luminosity function. We will also use the Green Bank and Parkes telescopes to survey the plane and central bulge of the Milky Way. Finally, the complete target list includes several classes of exotica, including white dwarfs, brown dwarfs, black holes, neutron stars, and asteroids in our solar system.

  18. Treatment of Premenstrual Breakthrough of Depression With Adjunctive Oral Contraceptive Pills Compared With Placebo.

    Science.gov (United States)

    Peters, Whitney; Freeman, Marlene P; Kim, Semmie; Cohen, Lee S; Joffe, Hadine

    2017-10-01

    Two-thirds of women with depressive disorders report reemergence of depression premenstrually, or premenstrual exacerbation (PME), despite effective treatment of the underlying mood disorder during the remainder of the cycle. There is a paucity of studies that rigorously assess treatments targeting PME. Open-label data suggest that augmentation of antidepressants with the oral contraceptive pill (OCP) drospirenone and ethinyl estradiol (DRSP/EE) improves depressive symptoms that break through treatment premenstrually. We now report results of a randomized placebo-controlled OCP augmentation trial. Women with unipolar depressive disorders in remission on stable antidepressant doses with a 30% increase in Montgomery-Åsberg Depression Rating Scale (MADRS) scores from the follicular to luteal phase were randomized to double-blind augmentation of antidepressant with either DRSP/EE or placebo for 2 months. The MADRS and Daily Record of Severity of Problems (DRSP) measures were anchored to the menstrual cycle phase. Of 32 women randomized, 25 (n = 12 DRSP/EE, n = 13 placebo) completed the trial. Premenstrual MADRS scores declined by a median of 43.6% and 38.9% (P = 0.59), and premenstrual DRSP scores declined by a median of 23.5% and 20.9% (P = 0.62) in the DRSP/EE and placebo groups, respectively. There was a trend toward greater improvement in premenstrual DRSP scores for women with fewer lifetime depressive episodes (r = -0.40, P = 0.06). Findings from this small randomized trial suggest that OCP augmentation of antidepressants may not be effective for treating premenstrual breakthrough of depression. Future studies should target women established to have hormonal sensitivity prior to antidepressant therapy and those with fewer lifetime depressive episodes.

  19. Ionic Liquids: Breakthrough Absorption Technology for Post-Combustion CO{sub 2} Capture

    Energy Technology Data Exchange (ETDEWEB)

    Maginn, Edward

    2012-09-30

    This is the final report for DE-FC26-07NT43091 Ionic Liquids: Breakthrough Absorption Technology for Post-Combustion CO{sub 2} Capture. A detailed summary is provided of the ionic liquid (IL) discovery process, synthesis and testing results, process / systems modeling, lab-scale operational testing, corrosion testing and commercialization possibilities. The work resulted in the discovery of a new class of ionic liquids (ILs) that efficiently react with CO{sub 2} in a 1:1 stoichiometry with no water present and no increase in viscosity. The enthalpy of reaction was tuned to optimize process economics. The IL was found to have excellent corrosion behavior with and without CO{sub 2} present. In lab-scale tests, the IL was able to effectively remove CO{sub 2} from a simulated flue gas stream, although mass transfer was slower than with aqueous monoethanolamine (MEA) due to higher viscosities. The non-volatile nature of the solvent and its high thermal stability, however, make it an intriguing option. An independent systems analysis indicates that the economics of using the best IL discovered to date (NDIL0157), are at least comparable to and potentially slightly better than - the Fluor Econamine FG PlusTM process (DOE Case 12). Further work should be directed at improving mass transfer / lowering viscosity and developing commercial synthesis routes to make these ILs at scale in an inexpensive manner. Demonstration of the process at larger scales is also warranted, as is the exploration of other process configurations that leverage the anhydrous nature of the solvent and its extremely low volatility.

  20. THE ARTHRITIS AND MUSCULOSKELETAL QUALITY IMPROVEMENT PROGRAM (AMQUIP: A BREAKTHROUGH SERIES METHODOLOGY PROJECT

    Directory of Open Access Journals (Sweden)

    MASTURA I

    2008-01-01

    Full Text Available The Australian government had funded the National Primary Care Collaborative (NPCC program with funding of $14.6 million over three years. One of the pilots project was the Arthritis and Musculoskeletal Quality Improvement Program (AMQuIP.The study aims to optimize general practitioners (GPs management of patients with osteoarthritis (OA of the hip and knee by identifying gaps between their current practice and best practice. The Breakthrough Series Collaborative methodology with several Plan-Do-Study-Act (PDSA cycles was employed. Participants comprises of 12 GPs/practices from two Victorian Divisions of general Practice (one rural, one metropolitan with 10 patients per GP/practice. GPs/practices attended an orientation and three learning workshops and a videoconference. GPs/practices completed PDSA cycles between workshop and reported results at workshops. GPs/practices reported use of guidelines, change in patient management and change in practice management/systems. All recruited patients completed the SF-12v2 Health Survey and WOMAC OA Index Questionnaire twice. Follow up activities including focus groups and face-to-face interviews were held six months after the final workshop. All GPs/practices used the guidelines/key messages, introduced “new” management strategies to patients, and made positive changes to their practice management/systems. Patient reported positive changes and outcomes. By using a structured methodology and evidence-based guidelines/key messages; GPs can introduce new patient management strategies, and by identifying gaps in practice management systems, positive changes can be achieved.

  1. Watch out for the blue circle: a breakthrough in family planning promotional strategy.

    Science.gov (United States)

    Sumarsono

    1989-07-01

    Realizing the potential of commercial marketing in changing the attitude and behavior of the target audience in the early years of the 4th 5-year development plan, the National Family Planning Program tried to develop new ventures in communicating the concept of the small family norm to the people. The condom was chosen as the 1st product to be sold through the social marketing project because male awareness about family planning was still low. Based on audience research, the pricing, packaging, and branding of the product was developed. The most accepted brand name was Dua Lima because it has a neutral meaning, is easily remembered, and can be described in sign language. The last reason is very important because most consumers have difficulty communicating about condoms in the sales outlet. Social marketing has proved effective because of strong public relations activities and the involvement of formal and informal leaders. This experiment has convinced family planning management that social marketing is workable for promoting the small family norm. In 1987, under the new program of self-sufficiency in family planning, the private sector is invited to participate by providing family planning services for target audiences, using the principles of self-sufficiency and self-support. There are 2 principal activities; 1) the IEC campaign, and 2) product (contraceptive) selling. IEC activities include a media campaign public relations work. Product selling is done through commercial channels such as pharmaceutical firms, drug stores, private doctors, and midwives. It was decided that the campaign would be aided by a name and logo. The blue circle was chosen because it is unique, communicative, and simple. The social marketing of contraceptives in Indonesia can be considered a breakthrough in communication strategy for a national development program.

  2. Relativistic generalization of the incentive trap of interstellar travel with application to Breakthrough Starshot

    Science.gov (United States)

    Heller, René

    2017-09-01

    As new concepts of sending interstellar spacecraft to the nearest stars are now being investigated by various research teams, crucial questions about the timing of such a vast financial and labour investment arise. If humanity could build high-speed interstellar lightsails and reach α Centauri 20 yr after launch, would it be better to wait a few years, then take advantage of further technology improvements and arrive earlier despite waiting? The risk of being overtaken by a future, faster probe has been described earlier as the incentive trap. Based on 211 yr of historical data, we find that the speed growth of artificial vehicles, from steam-driven locomotives to Voyager 1, is much faster than previously believed, about 4.72 per cent annually or a doubling every 15 yr. We derive the mathematical framework to calculate the minimum of the wait time to launch t plus travel time τ(t) and extend it into the relativistic regime. We show that the t + τ(t) minimum disappears for nearby targets. There is no use of waiting once we can reach an object within about 20 yr of travel, irrespective of the actual speed. In terms of speed, the t + τ(t) minimum for a travel to α Centauri occurs at 19.6 per cent the speed of light (c), in agreement with the 20 per cent c proposed by the Breakthrough Starshot initiative. If interstellar travel at 20 per cent c could be achieved within 45 yr from today and the kinetic energy be increased at a rate consistent with the historical record, then humans can reach the 10 most nearby stars within 100 yr from today.

  3. A new transmucosal drug delivery system for patients with breakthrough cancer pain: the fentanyl effervescent buccal tablet

    OpenAIRE

    Freye, Enno

    2008-01-01

    Enno FreyeCenter of Ambulatory Pain Medicine, Neuss-Uedesheim, GermanyAbstract: Breakthrough pain, a transitory severe pain with the background of otherwise controlled persistent pain has a prevalence between 52% and 67% in outpatients with cancer. Medications for such sudden-onset pain require non-invasive delivery of a potent and short-acting opioid for rapid pain relief. Although oral transmucosal delivery of fentanyl citrate (OTFC) has been shown to provide better pain relief than a typic...

  4. Stanford test called a net breakthrough - data sent at 3,500 times the speed of broadband

    CERN Multimedia

    2003-01-01

    Researchers at a Stanford University-affiliated research center have found a way to send data across the Internet more than 3,500 times faster than the typical broadband connection. The technical breakthrough set an Internet speed record too fast to be of use with present-day computers but could open the way for scientists to share and ship massive databases around the world, according to the researchers.

  5. Closed-flow column experiments—Insights into solute transport provided by a damped oscillating breakthrough behavior

    Science.gov (United States)

    Ritschel, Thomas; Totsche, Kai Uwe

    2016-03-01

    Transport studies that employ column experiments in closed-flow mode complement classical approaches by providing new characteristic features observed in the solute breakthrough and equilibrium between liquid and solid phase. Specific to the closed-flow mode is the recirculation of the effluent to the inflow via a mixing vessel. Depending on the ratio of volumes of mixing vessel and water-filled pore space, a damped oscillating solute concentration emerges in the effluent and mixing vessel. The oscillation characteristics, e.g., frequency, amplitude, and damping, allow for the investigation of solute transport in a similar fashion as known for classical open-flow column experiments. However, the closed loop conserves substances released during transport within the system. In this way, solute and porous medium can equilibrate with respect to physicochemical conditions. With this paper, the features emerging in the breakthrough curves of saturated column experiments run in closed-flow mode and methods of evaluation are illustrated under experimental boundary conditions forcing the appearance of oscillations. We demonstrate that the effective pore water volume and the pumping rate can be determined from a conservative tracer breakthrough curve uniquely. In this way, external preconditioning of the material, e.g., drying, can be avoided. A reactive breakthrough experiment revealed a significant increase in the pore water pH value as a consequence of the closed loop. These results highlight the specific impact of the closed mass balance. Furthermore, the basis for the modeling of closed-flow experiments is given by the derivation of constitutive equations and numerical implementation, validated with the presented experiments.

  6. Biosorption of uranium(VI) from aqueous solutions by Ca-pretreated Cystoseira indica alga: breakthrough curves studies and modeling.

    Science.gov (United States)

    Ghasemi, Morteza; Keshtkar, Ali Reza; Dabbagh, Reza; Jaber Safdari, S

    2011-05-15

    Uranium(VI) biosorption from aqueous solutions containing 60 mg l(-1) metal concentration by Ca-pretreated Cystoseira indica alga was studied in a packed bed column with 1.5 cm internal diameter. The effect of bed height and flow rate on biosorption process was investigated and the experimental breakthrough curves were obtained. Results showed that by increasing the bed height, the breakthrough and exhaustion times increased and the slope of breakthrough curves decreased. Also, it was observed that the controlled-rate step shifted from external to internal mass transfer limitations, as the flow rate increased. The maximum uptake capacity, 318.15 mg g(-1), and total metal removal, 59.32%, were obtained at flow rate of 2.3 ml min(-1) and bed height of 6 cm. The column was regenerated using 0.1M HCl solution and sorption-desorption studies were carried out for three cycles. The obtained results confirmed that reusability of this biosorbent is possible. The results obtained agreed well with the bed depth service time model. In addition, for estimations of the parameters necessary for the design of a large-scale packed bed column, the experimental data were also fitted to the Thomas, Yan and Belter models and were found to agree with the experimental data fairly well. Copyright © 2011 Elsevier B.V. All rights reserved.

  7. Biosorption of uranium(VI) from aqueous solutions by Ca-pretreated Cystoseira indica alga: Breakthrough curves studies and modeling

    Energy Technology Data Exchange (ETDEWEB)

    Ghasemi, Morteza [Faculty of Nuclear Engineering, Shahid Beheshti University, Tehran (Iran, Islamic Republic of); Keshtkar, Ali Reza, E-mail: akeshtkar@aeoi.org.ir [Nuclear Fuel Cycle School, Nuclear Science and Technology Research Institute, Tehran (Iran, Islamic Republic of); Dabbagh, Reza [Nuclear Science Research School, Nuclear Science and Technology Research Institute, Tehran (Iran, Islamic Republic of); Jaber Safdari, S. [Nuclear Fuel Cycle School, Nuclear Science and Technology Research Institute, Tehran (Iran, Islamic Republic of)

    2011-05-15

    Uranium(VI) biosorption from aqueous solutions containing 60 mg l{sup -1} metal concentration by Ca-pretreated Cystoseira indica alga was studied in a packed bed column with 1.5 cm internal diameter. The effect of bed height and flow rate on biosorption process was investigated and the experimental breakthrough curves were obtained. Results showed that by increasing the bed height, the breakthrough and exhaustion times increased and the slope of breakthrough curves decreased. Also, it was observed that the controlled-rate step shifted from external to internal mass transfer limitations, as the flow rate increased. The maximum uptake capacity, 318.15 mg g{sup -1}, and total metal removal, 59.32%, were obtained at flow rate of 2.3 ml min{sup -1} and bed height of 6 cm. The column was regenerated using 0.1 M HCl solution and sorption-desorption studies were carried out for three cycles. The obtained results confirmed that reusability of this biosorbent is possible. The results obtained agreed well with the bed depth service time model. In addition, for estimations of the parameters necessary for the design of a large-scale packed bed column, the experimental data were also fitted to the Thomas, Yan and Belter models and were found to agree with the experimental data fairly well.

  8. Bladder volume at onset of vesicoureteral reflux is an independent risk factor for breakthrough febrile urinary tract infection.

    Science.gov (United States)

    Alexander, Siobhan E; Arlen, Angela M; Storm, Douglas W; Kieran, Kathleen; Cooper, Christopher S

    2015-04-01

    Improved identification of children with vesicoureteral reflux at risk for recurrent febrile urinary tract infection may impact management decisions. We hypothesized that reflux occurring earlier during bladder filling increases the duration of exposure of the kidneys to bacteria, and, therefore, increases the risk of pyelonephritis. Children with vesicoureteral reflux and detailed voiding cystourethrogram data were identified. Bladder volume at onset of reflux was normalized for age. Demographics, reflux grade, laterality, presence/absence of bladder-bowel dysfunction and breakthrough febrile urinary tract infections were assessed. Median followup was 24 months (IQR 12 to 52). A total of 208 girls and 47 boys were analyzed with a mean ± SD age at diagnosis of 3.1 ± 2.6 years. On univariate analysis history of febrile urinary tract infection (HR 2.17, 95% CI 1.33-2.85, p = 0.01), dilating vesicoureteral reflux (HR 1.6, 95% CI 1.05-2.42, p = 0.03) and bladder-bowel dysfunction (HR 1.66, 95% CI 0.99-2.75, p = 0.05) were associated with an increased risk of breakthrough febrile urinary tract infection. Median bladder volume at onset of reflux in children with breakthrough febrile urinary tract infection was significantly less (33.1%) than in those without infection (49.5%, p = 0.003). Reflux onset at 35% predicted bladder capacity or less was associated with a significantly increased risk of breakthrough febrile urinary tract infection on multivariate analysis (HR 1.58, 95% CI 1.05-2.38, p = 0.03). Children with early filling vesicoureteral reflux are at increased risk for breakthrough febrile urinary tract infection independent of reflux grade. Bladder volume at onset of reflux should be recorded during cystograms since it provides additional prognostic information about the risk of pyelonephritis and resolution, and may assist with counseling and clinical decision making. Copyright © 2015 American Urological Association Education and Research, Inc. Published by

  9. The Breakthrough Listen Search for Intelligent Life: the first SETI results and other future science.

    Science.gov (United States)

    Enriquez, J. Emilio; Breakthrough Listen Team

    2018-01-01

    The Breakthrough Listen (BL) Initiative is the largest campaign in human history on the search for extraterrestrial intelligence. The work presented here is the first BL search for engineered signals. This comprises a sample of 692 nearby stars within 50 pc. We used the Green Bank Telescope (GBT) to conduct observations over 1.1-1.9 GHz (L-band). Our observing strategy allows us to reject most of the detected signals as terrestrial interference. During the analysis, eleven stars show events that passed our thresholding algorithm, but detailed analysis of their properties indicates they are consistent with known examples of anthropogenic radio frequency interference. This small number of false positives and their understood properties give confidence on the techniques used for this search. We conclude that, at the time of our observations none of the observed systems host high-duty-cycle radio transmitters emitting at the observed frequencies with an EIRP of 10^13 W, readily achievable by our own civilization.We can place limits on the presence of engineered signals from putative extraterrestrial civilizations inhabiting the environs of the target stars. Our results suggest that fewer than ~0.1% of the stellar systems within 50 pc possess the type of transmitters searched in this survey. This work provides the most stringent limit on the number of low power radio transmitters around nearby stars to date. We explored several metics to compare our results to previous SETI efforts. We developed a new figure-of-merit that can encompass a wider set of parameters and can be used on future SETI experiments for a meaningful comparison.We note that the current BL state-of-the-art digital backend installed at the Green Bank Observatory is the fastest ever used for a SETI experiment by a factor of a few. Here we will describe the potential use of the BL backend by other groups on complementary science, as well as a mention the ongoing and potential collaborations focused in

  10. Reproducing tailing in breakthrough curves: Are statistical models equally representative and predictive?

    Science.gov (United States)

    Pedretti, Daniele; Bianchi, Marco

    2018-03-01

    Breakthrough curves (BTCs) observed during tracer tests in highly heterogeneous aquifers display strong tailing. Power laws are popular models for both the empirical fitting of these curves, and the prediction of transport using upscaling models based on best-fitted estimated parameters (e.g. the power law slope or exponent). The predictive capacity of power law based upscaling models can be however questioned due to the difficulties to link model parameters with the aquifers' physical properties. This work analyzes two aspects that can limit the use of power laws as effective predictive tools: (a) the implication of statistical subsampling, which often renders power laws undistinguishable from other heavily tailed distributions, such as the logarithmic (LOG); (b) the difficulties to reconcile fitting parameters obtained from models with different formulations, such as the presence of a late-time cutoff in the power law model. Two rigorous and systematic stochastic analyses, one based on benchmark distributions and the other on BTCs obtained from transport simulations, are considered. It is found that a power law model without cutoff (PL) results in best-fitted exponents (αPL) falling in the range of typical experimental values reported in the literature (1.5 constant αCO ≈ 1. In the PLCO model, the cutoff rate (λ) is the parameter that fully reproduces the persistence of the tailing and is shown to be inversely correlated to the LOG scale parameter (i.e. with the skewness of the distribution). The theoretical results are consistent with the fitting analysis of a tracer test performed during the MADE-5 experiment. It is shown that a simple mechanistic upscaling model based on the PLCO formulation is able to predict the ensemble of BTCs from the stochastic transport simulations without the need of any fitted parameters. The model embeds the constant αCO = 1 and relies on a stratified description of the transport mechanisms to estimate λ. The PL fails to

  11. Correlations between plasma endothelin-1 levels and breakthrough pain in patients with cancer

    Directory of Open Access Journals (Sweden)

    Yan XB

    2015-12-01

    Full Text Available Xue-bin Yan, Tuo-chao Peng, Dong Huang Department of Anesthesiologist, The Third Xiangya Hospital of Central South University, Changsha, Hunan Province, People’s Republic of China Abstract: Endothelin-1 (ET-1 may be involved in driving pain in patients with advanced cancer. However, a few studies focus on the role of ET-1 in breakthrough pain (BP. The aim of this pivotal study was to explore the correlation between the plasma (ET-1 level and BP intensity. A total of 40 patients were enrolled in the study, and they were divided into two groups: BP group and non-BP group. Moreover, 20 healthy adults were used as the normal control group. Pain intensity was measured using visual analog scale (VAS scores of 1–10. Plasma ET-1 levels were detected by an ET radioimmunoassay kit. Subsequently, the correlation of ET-1 level with the VAS score and cancer types was analyzed by Pearson’s correlation coefficient. The plasma ET-1 level in the BP group (35.31±8.02 pg/mL was higher than that in the non-BP group (29.51±6.78 pg/mL and the normal control group (24.77±10.10 pg/mL, P<0.05. In addition, the VAS score in the BP group (7.45±0.82 was higher than that in the non-BP group (2.80±1.23, P<0.05. The plasma ET-1 level was positively correlated with the VAS score of the BP group (Pearson’s r=0.42. There was no significant correlation between the plasma ET-1 level and VAS score of the non-BP group (Pearson’s r=–0.22 or/and cancer types (P>0.05. The elevated plasma ET-1 levels were positively related to BP, and targeting ET-1 may provide a novel pain-reducing therapeutic treatment in BP. Keywords: visual analog scale, correlation, cancer types, background pain

  12. Esophageal Acidification During Nocturnal Acid-breakthrough with Ilaprazole Versus Omeprazole in Gastroesophageal Reflux Disease.

    Science.gov (United States)

    Karyampudi, Arun; Ghoshal, Uday C; Singh, Rajan; Verma, Abhai; Misra, Asha; Saraswat, Vivek A

    2017-04-30

    Though nocturnal acid-breakthrough (NAB) is common in gastroesophageal reflux disease (GERD) patients, its clinical importance results from esophageal acidification, which has been shown to be uncommon. Ilaprazole, a long-acting proton pump inhibitor, may cause NAB infrequently. Accordingly, we studied prospectively, (1) frequency and degree of esophageal acidification during NAB, and (2) frequency and severity of NAB while on ilaprazole versus omeprazole. Fifty-eight consecutive patients with GERD on once daily ilaprazole, 10 mg (n = 28) or omeprazole, 20 mg (n = 30) for > one month underwent 24-hour impedance-pH monitoring prospectively. NAB was defined as intra-gastric pH one hour during night, and esophageal acidification as pH < 4 for any duration. Nocturnal symptoms (heartburn, regurgitation, and chest pain) were also recorded. Of the 58 patients (age 35.5 [inter-quartile range 26.5-46.0] years, 38 [65.5%], 42 (72.4%) had NAB. Though patients with NAB had lower nocturnal intra-gastric pH than without (2.8 [1.9-4.1] vs 5.7 [4.6-6.8], P < 0.001), frequency and duration of nocturnal esophageal acidification (17/42 vs 4/16, P = 0.360 and 0.0 [0.0-1.0] vs 0.0 [0.0-0.3] minutes, P = 0.260, respectively) and symptoms were comparable (13/42 vs 6/16, P = 0.750). Though ilaprazole was associated with less NABs (1 [range 1-2, n = 19] vs 1 [range 1-3, n = 23], P = 0.010) than omeprazole, the frequency, duration, and mean intra-gastric pH during NAB were comparable (19/28 vs 23/30, P = 0.560; 117 [0-315] vs 159 [69-287] minutes, P = 0.500; 1.02 [0.7-1.4] vs 1.04 [0.44-1.3], P = 0.620, respectively). Though NAB was common while patients were on a proton pump inhibitor, esophageal acidification was uncommon. Frequency and severity of NAB were comparable among patients on ilaprazole and omeprazole, except for the lesser number of NABs with ilaprazole.

  13. Aldosterone breakthrough in dogs with naturally occurring myxomatous mitral valve disease.

    Science.gov (United States)

    Ames, M K; Atkins, C E; Eriksson, A; Hess, A M

    2017-06-01

    Aldosterone breakthrough (ABT) is the condition in which angiotensin converting enzyme inhibitors (ACEIs) and/or angiotensin receptor blockers fail to effectively suppress the activity of the renin angiotensin aldosterone system. The objective of this study was to determine if ABT occurs in dogs with naturally occurring myxomatous mitral valve disease receiving an ACEI, using the urine aldosterone to creatinine ratio (UAldo:C) as a measure of renin angiotensin aldosterone system activation. This study includes 39 dogs with myxomatous mitral valve disease. A UAldo:C cut-off definition (derived from a normal population of healthy, adult, and client-owned dogs) was used to determine the prevalence of ABT in this population. Spearman analysis and univariate logistic regression were used to evaluate the relationship between UAldo:C and ABT (yes/no) and eight variables (age, serum K + concentration, serum creatinine concentration, ACEI therapy duration and ACEI dosage, furosemide therapy duration and furosemide dosage, and urine sample storage time). Finally, the UAldo:C in dogs receiving spironolactone, as part congestive heart failure (CHF) therapy, was compared to dogs with CHF that were not receiving spironolactone. The prevalence of ABT was 32% in dogs with CHF and 30% in dogs without CHF. There was no relationship between either the UAldo:C or the likelihood of ABT and the eight variables. Therapy with spironolactone lead to a significant elevation of the UAldo:C. Using the UAldo:C and a relatively stringent definition of ABT, it appears that incomplete RAAS blockade is common in dogs with MMVD receiving an ACEI. The prevalence of ABT in this canine population mirrors that reported in humans. While the mechanism of ABT is likely multifactorial and still poorly understood, the proven existence of ABT in dogs offers the potential to improve the prognosis for MMVD with the addition of a mineralocorticoid receptor blocker to current therapeutic regimens

  14. Schumpeterian Patterns of Innovation and the Sources of Breakthrough Inventions: Evidence from a Data-Set of R&D Awards

    OpenAIRE

    Roberto Fontana; Alessandro Nuvolari; Hiroshi Shimitzu; Andrea Vezzulli

    2012-01-01

    This paper examines the relationship between Schumpeterian patterns of innovation and the generation of breakthrough inventions. Our data source for breakthrough inventions is the “R&D 100 awards” competition organized each year by the magazine Research & Development. Since 1963, this magazine has been awarding this prize to 100 most technologically significant new products available for sale or licensing in the year preceding the judgment. We use instead USPTO patent data to measure the r...

  15. Clinical and Microbiological Characteristics of Breakthrough Candidemia in Allogeneic Hematopoietic Stem Cell Transplant Recipients in a Japanese Hospital.

    Science.gov (United States)

    Kimura, Muneyoshi; Araoka, Hideki; Yamamoto, Hisashi; Asano-Mori, Yuki; Nakamura, Shigeki; Yamagoe, Satoshi; Ohno, Hideaki; Miyazaki, Yoshitsugu; Abe, Masahiro; Yuasa, Mitsuhiro; Kaji, Daisuke; Kageyama, Kosei; Nishida, Aya; Ishiwata, Kazuya; Takagi, Shinsuke; Yamamoto, Go; Uchida, Naoyuki; Izutsu, Koji; Wake, Atsushi; Taniguchi, Shuichi; Yoneyama, Akiko

    2017-04-01

    Few data on breakthrough candidemia (BC), defined as candidemia that develops on administration of antifungal agents (AFAs), in allogeneic hematopoietic stem cell transplant (allo-HSCT) recipients are available. The medical and microbiological records of recipients of an allo-HSCT obtained between December 2008 and December 2014 were reviewed. Of 768 allo-HSCT cases, 26 developed BC. Among the 26 causative strains, 22 strains were stored and identified by sequencing. The following species were isolated: Candida parapsilosis (9 strains), C. glabrata (4 strains), C. guilliermondii (3 strains), and other Candida species (6 strains). The AFAs being used when BC developed were micafungin (17 cases), liposomal amphotericin B (5 cases), itraconazole (2 cases), and voriconazole (2 cases). All 17 cases who developed BC during micafungin administration were administered 150 mg/day of micafungin. The susceptibilities of the causative Candida species to the administered AFAs when breakthrough occurred ranged from susceptible to resistant. Especially, 85% of the Candida species that caused BC during micafungin administration were susceptible to micafungin. Additionally, 75% of the strains were wild type for susceptibility to the administered AFAs when breakthrough occurred. Systemic steroid administration and a longer severe neutropenic phase (≥5 days) were independent risk factors for BC ( P = 0.016 and P = 0.015, respectively). BC developed in allo-HSCT recipients even when they received a sufficient dose of AFA, including micafungin, to which the causative Candida species were susceptible and/or had wild-type susceptibility in vitro Systemic steroid administration and a longer severe neutropenic phase were host-based factors associated with BC. Copyright © 2017 American Society for Microbiology.

  16. Experimental investigation of the impact of compound-specific dispersion and electrostatic interactions on transient transport and solute breakthrough

    Science.gov (United States)

    Muniruzzaman, Muhammad; Rolle, Massimo

    2017-02-01

    This study investigates the effects of compound-specific diffusion/dispersion and electrochemical migration on transient solute transport in saturated porous media. We conducted laboratory bench-scale experiments, under advection-dominated regimes (seepage velocity: 0.5, 5, 25 m/d), in a quasi two-dimensional flow-through setup using pulse injection of multiple tracers (both uncharged and ionic species). Extensive sampling and measurement of solutes' concentrations (˜1500 samples; >3000 measurements) were performed at the outlet of the flow-through setup, at high spatial and temporal resolution. The experimental results show that compound-specific effects and charge-induced Coulombic interactions are important not only at low velocities and/or for steady state plumes but also for transient transport under high flow velocities. Such effects can lead to a remarkably different behavior of measured breakthrough curves also at very high Péclet numbers. To quantitatively interpret the experimental results, we used four modeling approaches: classical advection-dispersion equation (ADE), continuous time random walk (CTRW), dual-domain mass transfer model (DDMT), and a multicomponent ionic dispersion model. The latter is based on the multicomponent formulation of coupled diffusive/dispersive fluxes and was used to describe and explain the electrostatic effects of charged species. Furthermore, we determined experimentally the temporal profiles of the flux-related dilution index. This metric of mixing, used in connection with the traditional solute breakthrough curves, proved to be useful to correctly distinguish between plume spreading and mixing, particularly for the cases in which the sole analysis of integrated concentration breakthrough curves may lead to erroneous interpretation of plume dilution.

  17. Highly efficient inactivation of bacteria found in drinking water using chitosan-bentonite composites: Modelling and breakthrough curve analysis.

    Science.gov (United States)

    Motshekga, Sarah C; Ray, Suprakas Sinha

    2017-03-15

    Disinfection of bacterially-contaminated drinking water requires a robust and effective technique and can be achieved by using an appropriate disinfectant material. The advanced use of nanomaterials is observed as an alternative and effective way for the disinfection process and water treatment as a whole. Hence, the inactivation of Escherichia coli (E. coli) using chitosan-Bentonite (Cts-Bent) composites was studied in a fixed bed column. Cts-Bent composites were synthesized using in situ cross-linking method using Bent-supported silver and zinc oxide nanoparticles. These composites were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and energy dispersive spectroscopy. The effect of the composite bed mass, initial concentration of bacteria, and flow rate on the bacterial inactivation was investigated. The characterization results revealed that the composites were successfully prepared and confirmed the presence of both silver and zinc oxide nanoparticles in the chitosan matrix. The growth curves of E. coli were expressed as breakthrough curves, based on the logistic, Gompertz, and Boltzmann models. The breakthrough time and processed volume of treated water at breakthrough were used as performance indicators, which revealed that the composites performed best at low bacterial concentration and flow rate and with substantial bed mass. The chitosan composites were found to be highly effective, which was demonstrated when no bacteria were observed in the effluent sample within the first 27 h of analysing river water. All the models were suitable for adequately describing and reproducing the experimental data with a sigmoidal pattern. Therefore, the prepared composite is showing potential to work as a disinfectant and provide an alternative solution for water disinfection; hence this study should propel further research of the same or similar materials. Copyright © 2017 Elsevier Ltd. All rights reserved.

  18. CD8+ and CD4+ cytotoxic T cell escape mutations precede breakthrough SIVmac239 viremia in an elite controller

    Directory of Open Access Journals (Sweden)

    Burwitz Benjamin J

    2012-11-01

    Full Text Available Abstract Background Virus-specific T cells are critical components in the containment of immunodeficiency virus infections. While the protective role of CD8+ T cells is well established by studies of CD8+ T cell-mediated viral escape, it remains unknown if CD4+ T cells can also impose sufficient selective pressure on replicating virus to drive the emergence of high-frequency escape variants. Identifying a high frequency CD4+ T cell driven escape mutation would provide compelling evidence of direct immunological pressure mediated by these cells. Results Here, we studied a SIVmac239-infected elite controller rhesus macaque with a 1,000-fold spontaneous increase in plasma viral load that preceded disease progression and death from AIDS-related complications. We sequenced the viral genome pre- and post-breakthrough and demonstrate that CD8+ T cells drove the majority of the amino acid substitutions outside of Env. However, within a region of Gag p27CA targeted only by CD4+ T cells, we identified a unique post-breakthrough mutation, Gag D205E, which abrogated CD4+ T cell recognition. Further, we demonstrate that the Gag p27CA-specific CD4+ T cells exhibited cytolytic activity and that SIV bearing the Gag D205E mutation escapes this CD4+ T cell effector function ex vivo. Conclusions Cumulatively, these results confirm the importance of virus specific CD8+ T cells and demonstrate that CD4+ T cells can also exert significant selective pressure on immunodeficiency viruses in vivo during low-level viral replication. These results also suggest that further studies of CD4+ T cell escape should focus on cases of elite control with spontaneous viral breakthrough.

  19. Capacitive Sensors and Breakthrough Curves in Automated Irrigation for Water and Soil Conservation

    Science.gov (United States)

    Fahmy Hussein, Mohamed

    2016-04-01

    when such sensors are used in farmers' fields. The second procedure was Breakthrough Curve (BTC) lab-method to follow the fate of chemical composition of water draining out of Ca-saturated soil columns and Exchangeable Sodium Percent, ESP, in soil materials under saturated-flow. The work was run on five packed soil-columns under hydraulic-gradient of about 6 in fine-grained soil materials (Nile clay-sediments) wetted with five NaCl aqueous solutions (10, 25, 50, 75 and 100 mEq/l). The results revealed the removal of 40 to 80% of sodium from irrigation water after 6 to 8 pore volumes flowed out in about 12 hours with the highest removal from the most dilute solution. Rapid increase of ESP was observed when the inlet solution had moderate to high TDS whereas the dilute solution (10 mEq/l) has resulted in no soil chemical degradation. The results were extrapolated to field situation and showed that Nile clayey soil would never get sodic (ESP>15) when wetted with high quality water regardless the water application duration whereas only 1-4 year of irrigation with moderate to poor-quality water (as takes place under perennial irrigation) would result in ESP increase to 15 and much higher values. A secondary but important outcome of BTC experiments was that marginal sediments could be used in multi-column cells (6 to 8 columns) to improve water-quality through removal of Na+ ions from water, whereas anions could be removed by positively-charged resins and the cells could be recycled in a proposed prototype scheme.

  20. On the formation of localized peaks and non-monotonic tailing of breakthrough curves

    Science.gov (United States)

    Siirila, Erica R.; Sanchez-Vila, Xavier; Fernàndez-Garcia, Daniel

    2014-05-01

    While breakthrough curve (BTC) analysis is a traditional tool in hydrogeology to obtain hydraulic parameters, in recent years emphasis has been placed on analyzing the shape of the receding portion of the curve. A number of field and laboratory observations have found a constant BTC slope in log-log space, and thus it has been hypothesized that a power law behavior is representative of real aquifers. Usually, monotonicity of the late-time BTC slope is just assumed, meaning that local peaks in the BTC are not considered, and that a local (in time) increase or decrease of BTC slope is also not considered. We contend that local peaks may exist but are sometimes not reported for a number of reasons. For example, when BTCs are obtained from actual measurements, sub-sampling may mask non-monotonicity, or small peaks may be reported as measurement errors and thus smoothed out or removed. When numerical analyses of synthetic aquifers are performed, the simulation method may yield artificially monotonous curves as a consequence of the methods used. For example, Eulerian methods may suffer from numerical dispersion, where curves tend to become over-smoothed while Lagrangian methods may suffer from artificial BTC oscillations stemming from the reconstruction of concentrations from a limited number of particles. A paradigm shift in terms of the BTC shape must also accompany two major advancements within the hydrogeology field: 1) the increase of high frequency data and progression of data collection techniques that diminish the problems of under-sampling BTCs and 2) advancements in supercomputing and numerical simulation allowing for higher resolution of flow and transport problems. As more information is incorporated into BTCs and/or they are obtained in more spatial locations, it is likely that classical definitions of BTC shapes will no longer be adequate descriptors for future treatment of contaminant transport problems. For example, the presence of localized peaks in BTCs

  1. Use of the maximum entropy method to correct for acoustic ringing and pulse breakthrough in 17O NMR spectra

    Science.gov (United States)

    Laue, Ernest D.; Pollard, Konrad O. B.; Skilling, John; Staunton, James; Sutkowski, Andrew C.

    The maximum entropy method (MEM) is shown to be capable of producing spectra of improved clarity from FIDs in which the early points are corrupted by ring-down (which may be caused by acoustic ringing or by pulse breakthrough). The method is evaluated using 17O NMR data. The distortion arising from the ring-down signal is suppressed by ignoring the severely corrupted early points in the FID when evaluating trial MEM spectra. The areas of peaks are best recovered (within 10%) when a suitable degree of line narrowing (equivalent in effect to a matched filter) is used in the MEM spectrum.

  2. Breakthrough viridans streptococcal bacteremia in allogeneic hematopoietic stem cell transplant recipients receiving levofloxacin prophylaxis in a Japanese hospital.

    Science.gov (United States)

    Kimura, Muneyoshi; Araoka, Hideki; Yoshida, Atsushi; Yamamoto, Hisashi; Abe, Masahiro; Okamoto, Yuki; Yuasa, Mitsuhiro; Kaji, Daisuke; Kageyama, Kosei; Nishida, Aya; Ishiwata, Kazuya; Takagi, Shinsuke; Yamamoto, Go; Asano-Mori, Yuki; Uchida, Naoyuki; Hishinuma, Akira; Izutsu, Koji; Wake, Atsushi; Taniguchi, Shuichi; Yoneyama, Akiko

    2016-08-05

    Breakthrough viridans streptococcal bacteremia (VSB) in patients with hematological malignancy receiving levofloxacin prophylaxis is a major blood stream infection (BSI) occurring during febrile neutropenia. However, clinical data focused on VSB in allogeneic hematopoietic stem cell transplant (allo-HSCT) recipients are lacking. The medical records of allo-HSCT recipients who received oral levofloxacin prophylaxis between January 2011 and August 2013 at Toranomon Hospital were reviewed to evaluate breakthrough VSB. Stored viridans streptococcal (VGS) species were identified by using sodA gene sequencing, and were assessed for drug susceptibility. Among the 184 allo-HSCT recipients on levofloxacin prophylaxis, 28 (15.2 %) experienced breakthrough VSB. All of the 28 recipients with VSB were treated with a cefepime-based or piperacillin/tazobactam-based regimen. The susceptibility rates of the VGS strains for levofloxacin, cefepime, piperacillin/tazobactam, meropenem, and vancomycin were 0 %, 95 %, 100 %, 100 %, and 100 %, respectively. Both the MIC50 (minimum inhibitory concentration) and the MIC90 of ceftazidim (0.5 μg/mL and 2 μg/mL, respectively) were higher than the MIC90 of all the other anti-pseudomonal beta-lactams (APBLs). Only 1 VGS strain had a penicillin MIC ≥ 2 μg/mL by the Etest (3.6 %). There were no cases with acute respiratory distress syndrome (ARDS) that was associated with VSB, although the rate of viridans group streptococcal shock syndrome was high (26 %). The crude 30-day mortality rate in the VSB group (10.7 %) did not differ significantly from that in the BSI without VSB group (9.3 %) or non-BSI group (7.0 %) (P = 0.77). Also, VSB was not a risk factor for all-cause mortality up to 60 days following allo-HSCT (P = 0.43). APBL with increased anti-VGS activity (APBL-VA) monotherapy would typically be optimal for treating the VGS strains in this setting. Indication of adding an empiric anti-gram-positive agent to

  3. Breakthrough of the Nordic Bronze Age: Transcultural warriorhood and a Carpathian crossroad in the 16th century BC

    DEFF Research Database (Denmark)

    Vandkilde, Helle

    2014-01-01

    The breakthrough of the Nordic Bronze Age (NBA) c. 1600 bc as a koiné within Bronze Age Europe can be historically linked to the Carpathian Basin. Nordic distinctiveness entailed an entanglement of cosmology and warriorhood, albeit represented through different media in the hotspot zone (bronze) ...... momentous creativity that drew upon Carpathian originals, contacts and a pool of Carpathian ideas, but ultimately drawing on emergent Mycenaean hegemonies in the Aegean. This provided the incentive for a cosmology-rooted resource from which the NBA could take its starting point....

  4. Effect of CH4 on the CO2 breakthrough pressure and permeability of partially saturated low-permeability sandstone in the Ordos Basin, China

    Science.gov (United States)

    Zhao, Yan; Yu, Qingchun

    2018-01-01

    The behavior of CO2 that coexists with CH4 and the effect of CH4 on the CO2 stream need to be deeply analyzed and studied, especially in the presence of water. Our previous studies investigated the breakthrough pressure and permeability of pure CO2 in five partially saturated low-permeability sandstone core samples from the Ordos Basin, and we concluded that rocks with a small pore size and low permeability show considerable sealing capacity even under unsaturated conditions. In this paper, we selected three of these samples for CO2-CH4 gas-mixture breakthrough experiments under various degrees of water saturation. The breakthrough experiments were performed by increasing the gas pressure step by step until breakthrough occurred. Then, the effluent gas mixture was collected for chromatographic partitioning analysis. The results indicate that CH4 significantly affects the breakthrough pressure and permeability of CO2. The presence of CH4 in the gas mixture increases the interfacial tension and, thus, the breakthrough pressure. Therefore, the injected gas mixture that contains the highest (lowest) mole fraction of CH4 results in the largest (smallest) breakthrough pressure. The permeability of the gas mixture is greater than that for pure CO2 because of CH4, and the effective permeability decreases with increased breakthrough pressure. Chromatographic partitioning of the effluent mixture gases indicates that CH4 breaks through ahead of CO2 as a result of its weaker solubility in water. Correlations are established between (1) the breakthrough pressure and water saturation, (2) the effective permeability and water saturation, (3) the breakthrough pressure and effective permeability, and (4) the mole fraction of CO2/CH4 in the effluent mixture gases and water saturation. These results deepen our understanding of the multi-phase flow behavior in the porous media under unsaturated conditions, which have implications for formulating emergency response plans for gas

  5. The Alberta Breakthrough Pain Assessment Tool for cancer patients: a validation study using a delphi process and patient think-aloud interviews.

    Science.gov (United States)

    Hagen, Neil A; Stiles, Carla; Nekolaichuk, Cheryl; Biondo, Patricia; Carlson, Linda E; Fisher, Kim; Fainsinger, Robin

    2008-02-01

    Breakthrough pain is a prevalent cancer pain syndrome, and research is needed to identify more effective interventions to manage it. A validated tool to assess breakthrough pain in a standard and reliable manner is urgently needed to support the conduct of clinical trials in breakthrough pain. To address this need, we developed a breakthrough pain assessment tool for research purposes. The current study was undertaken to gather validity evidence for this breakthrough pain assessment tool, using a Delphi process involving an expert panel review, followed by a think-aloud process involving patients with cancer-related breakthrough pain. Two expert panels were formed: a national panel (within Canada; n=16) and an international panel (including experts from North America, UK, Europe, the Middle East, Australia, and New Zealand; n=22). Each panel participated in one anonymous survey round. Response rates were 56% (national panel) and 73% (international panel). The Delphi process revealed substantial consensus on the content of the tool, which increased between rounds of review. The overall level of agreement with the tool, averaged over the four evaluated aspects of all items, was 80% among national panelists and 88% among international panelists. Nine patients completed the think-aloud study. They were able to understand and complete the tool and provided specific direction on its improvement. The validity evidence gathered in this study suggests the Alberta Breakthrough Pain Assessment Tool is conceptually grounded and is understandable by patients and clinicians. Further validation of this tool as an assessment measure within clinical trials research is warranted.

  6. Integrated care for patients with a stroke in the Netherlands: results and experiences from a national Breakthrough Collaborative Improvement project

    Directory of Open Access Journals (Sweden)

    M.M.N. Minkman

    2005-03-01

    Full Text Available Purpose: This article considers the question if measurable improvements are achieved in the quality of care in stroke services by using a Breakthrough collaborative quality improvement model. Context of case: Despite the availability of explicit criteria, evidence based guidelines, national protocols and examples of best practices; stroke care in the Netherlands did not improve substantially yet. For that reason a national collaborative started in 2002 to improve integrated stroke care in 23 self selected stroke services. Data sources: Characteristics of sites, teams, aims and changes were assessed by using a questionnaire and monthly self-reports of teams. Progress in achieving significant quality improvement has been assessed on a five point Likert scale (IHI score. Case description: The stroke services (n=23 formed multidisciplinary teams, which worked together in a collaborative based on the IHI Breakthrough Series Model. Teams received instruction in quality improvement, reviewed self reported performance data, identified bottlenecks and improvement goals, and implemented “potentially better practices” based on criteria from the Edisse study, evidence based guidelines, own ideas and expert opinion. Conclusion and discussion: Quality of care has been improved in most participating stroke services. Eighty-seven percent of the teams have improved their care significantly on at least one topic. About 34% of the teams have achieved significant improvement on all aims within the time frame of the project. The project has contributed to the further development and spread of integrated stroke care in the Netherlands.

  7. The Breakthrough Listen Search for Intelligent Life: A Wideband Data Recorder System for the Robert C. Byrd Green Bank Telescope

    Science.gov (United States)

    MacMahon, David H. E.; Price, Danny C.; Lebofsky, Matthew; Siemion, Andrew P. V.; Croft, Steve; DeBoer, David; Enriquez, J. Emilio; Gajjar, Vishal; Hellbourg, Gregory; Isaacson, Howard; Werthimer, Dan; Abdurashidova, Zuhra; Bloss, Marty; Brandt, Joe; Creager, Ramon; Ford, John; Lynch, Ryan S.; Maddalena, Ronald J.; McCullough, Randy; Ray, Jason; Whitehead, Mark; Woody, Dave

    2018-04-01

    The Breakthrough Listen Initiative is undertaking a comprehensive search for radio and optical signatures from extraterrestrial civilizations. An integral component of the project is the design and implementation of wide-bandwidth data recorder and signal processing systems. The capabilities of these systems, particularly at radio frequencies, directly determine survey speed; further, given a fixed observing time and spectral coverage, they determine sensitivity as well. Here, we detail the Breakthrough Listen wide-bandwidth data recording system deployed at the 100 m aperture Robert C. Byrd Green Bank Telescope. The system digitizes up to 6 GHz of bandwidth at 8 bits for both polarizations, storing the resultant 24 GB s‑1 of data to disk. This system is among the highest data rate baseband recording systems in use in radio astronomy. A future system expansion will double recording capacity, to achieve a total Nyquist bandwidth of 12 GHz in two polarizations. In this paper, we present details of the system architecture, along with salient configuration and disk-write optimizations used to achieve high-throughput data capture on commodity compute servers and consumer-class hard disk drives.

  8. The anomaly in a breakthrough curve of a single well "push-pull" tracer test: A density driven effect?

    Science.gov (United States)

    Zeilfelder, Sarah; Hebig, Klaus; Ito, Narimitsu; Machida, Isao; Scheytt, Traugott; Marui, Atsunao

    2013-04-01

    What method is appropriate to investigate an aquifer when there is only one well available? A single well "push-pull" tracer test (PP Test) may be a suitable method in order to characterize an aquifer and to obtain information about the hydraulic and chemical properties when only one well is available for the investigations. In a PP test, a test solution that contains a known amount of solutes and a conservative tracer is injected into the aquifer ("push") and extracted afterwards ("pull"). Optionally, the test solution is flushed out of the well and the casing with untreated test solution with a so called "chaser" before being extracted. Also between the injection and the extraction phase a drifting time may be included. The breakthrough of the tracer during the extraction phase is measured and used for analyses and interpretation. In the last three years, several PP Test campaigns were conducted at two different test sites in Japan (Hebig et al. 2011, Zeilfelder et al. 2012). The aim was to investigate the applicability of the PP Test method in different geological settings and in different types of aquifers. The latest field campaign thus focussed on the question how variations of the setup are influencing the breakthrough curve of the PP Test in order to develop and enhance this method. Also the standardization of the PP Test was an aim of this study. During the campaign, a total of seven PP Tests were performed, while only single aspects of the setup were varied from test to test. The tests differed in injection and extraction rate, in the salinity of the injected test solution and in the use of a chaser solution. The general shapes of the breakthrough curves were similar and conclusions about the repeatability of the PP Test could be drawn. However, a sharp anomaly was observed in the breakthrough curve of one specific setup type. By repeating this PP test under the same boundary conditions, we were able to recreate the anomaly and could exclude any technical

  9. Safety and Efficacy of Oral Transmucosal Fentanyl Citrate Compared to Morphine Sulphate Immediate Release Tablet in Management of Breakthrough Cancer Pain

    Science.gov (United States)

    Bhatnagar, Sushma; Devi, Saraswathi; Vinod, NK; Jain, PN; Durgaprasad, G; Maroo, Sanjaykumar H; Patel, Ketan R

    2014-01-01

    Aim: To compare the efficacy and safety of oral transmucosal fentanyl citrate (OTFC) and oral morphine in Indian patients with breakthrough episodes of cancer pain. Materials and Methods: In this randomized, open label, active controlled, clinical study, total 186 patients who regularly experienced 1-4 episodes of breakthrough cancer pain (BTCP) daily, over the persistent pain controlled by taking oral morphine 60 mg/day or its equivalent were randomized to receive either OTFC 200 mcg or oral morphine 10 mg for the treatment of BTCP for 3 days. Improvement in pain as determined by numerical rating scale (NRS) at 5, 15, 30, and 60 minutes of drug administration and percentage of BTCP episodes showing reduction in pain intensity by >33% at 15 minutes were primary efficacy endpoints. Secondary efficacy endpoints were requirement for rescue analgesia and global assessment by physician and patient. Data of both treatment groups were analysed by appropriate statistical test using software, STATISTICA, version 11. Results: Patients treated with OTFC experienced significantly greater improvement in pain intensity of breakthrough episodes compared to those treated with oral morphine at all assessment time points (P breakthrough pain episodes treated with OTFC showed a greater than 33% reduction in pain intensity from baseline at 15 minutes compared to 39% episodes treated with oral morphine (P 0.05). Both study drugs were well tolerated. Conclusions: OTFC was found to provide faster onset of analgesic effect than immediate release oral morphine in management of breakthrough cancer pain. PMID:25191003

  10. Virologic breakthrough in a patient with chronic hepatitis B by combination treatment with tenofovir disoproxil fumarate and entecavir

    Directory of Open Access Journals (Sweden)

    Suzuki F

    2014-06-01

    Full Text Available Fumitaka Suzuki,1,2 Hitomi Sezaki,1 Norio Akuta,1 Yoshiyuki Suzuki,1 Yusuke Kawamura,1 Tetsuya Hosaka,1 Masahiro Kobayashi,1 Satoshi Saitoh,1 Yasuji Arase,1 Kenji Ikeda,1 Mariko Kobayashi,3 Sachiyo Watahiki,3 Rie Mineta,3 Yukiko Suzuki,3 Hiromitsu Kumada1 1Department of Hepatology, Toranomon Hospital, Tokyo, Japan; 2Okinaka Memorial Institute for Medical Research, Tokyo, Japan; 3Research Institute for Hepatology, Toranomon Branch Hospital, Kawasaki, Japan Abstract: Tenofovir disoproxil fumarate (TDF is widely used to treat hepatitis B virus (HBV patients in the USA and Europe. No confirmed report of resistance selection during treatment with TDF in treatment-naïve and nucleoside/nucleotide analog-treated chronic hepatitis B patients has yet been reported. Here, we report for the first time a patient with chronic hepatitis B and cirrhosis who emerged with virologic breakthrough during combination therapy with TDF and entecavir (ETV, against ETV-resistant virus. A 51-year-old Japanese woman with hepatitis B e-antigen (HBeAg, whose genotype was C, received ETV monotherapy continuously followed by TDF and ETV combination therapy, because her HBV DNA levels had been >3.5 log copies/mL. At the start of combination therapy, amino acid substitutions of the reverse transcriptase (rt gene, rtL180M, rtT184I/M, and rtM204V, were detected. After this, serum HBV DNA decreased to less than 2.1 log copies/mL and remained at this level until 31 months of combination therapy, when it again began to increase. Amino acid substitutions of rtL180M, rtS202G, and rtM204V emerged and were associated with an increase in serum HBV DNA at virologic breakthrough. Long-term therapy with TDF against the ETV-resistant virus has the potential to induce virologic breakthrough and resistance, and careful follow-up should be carried out. Keywords: hepatitis B virus, resistant

  11. Experimental investigation of the impact of compound-specific dispersion and electrostatic interactions on transient transport and solute breakthrough

    DEFF Research Database (Denmark)

    Muniruzzaman, Muhammad; Rolle, Massimo

    2017-01-01

    -dimensional flow-through setup using pulse injection of multiple tracers (both uncharged and ionic species). Extensive sampling and measurement of solutes' concentrations (∼1500 samples; >3000 measurements) were performed at the outlet of the flow-through setup, at high spatial and temporal resolution....... The experimental results show that compound-specific effects and charge-induced Coulombic interactions are important not only at low velocities and/or for steady state plumes but also for transient transport under high flow velocities. Such effects can lead to a remarkably different behavior of measured...... breakthrough curves also at very high Péclet numbers. To quantitatively interpret the experimental results, we used four modeling approaches: classical advection-dispersion equation (ADE), continuous time random walk (CTRW), dual-domain mass transfer model (DDMT), and a multicomponent ionic dispersion model...

  12. A Canadian online survey of oncology nurses' perspectives on the management of breakthrough pain in cancer (BTPc).

    Science.gov (United States)

    Fitch, Margaret I; McAndrew, Alison; Burlein-Hall, Stephanie

    2013-01-01

    This paper explores Canadian oncology nurses' perception of management of breakthrough pain in cancer (BTPc). An online questionnaire was distributed to 668 oncology nurses across Canada, and 201 participated. More nurses reported that patients used hydromorphone (99.5%), morphine (97.0%), codeine (88.1%), or oxycodone (88.1%) for BTPc, than fentanyl preparations (64.7%). Problems with opioid administration reported by nurses included failure to work quickly enough (35.7%), difficulty swallowing (16.6%), need for caregiver assistance (13.2%), mouth sores (12.6%) and dry mouth (11.5%). Although most nurses discussed BTPc management with their patients, the vast majority (72.2%) were not very satisfied with current treatment modalities. Effective dialogue with patients and access to educational resources/tools may help optimize therapy and enhance concordance with BTPc medications.

  13. Breakthrough in current-in-plane tunneling measurement precision by application of multi-variable fitting algorithm

    DEFF Research Database (Denmark)

    Cagliani, Alberto; Østerberg, Frederik Westergaard; Hansen, Ole

    2017-01-01

    We present a breakthrough in micro-four-point probe (M4PP) metrology to substantially improve precision of transmission line (transfer length) type measurements by application of advanced electrode position correction. In particular, we demonstrate this methodology for the M4PP current......-in-plane tunneling (CIPT) technique. The CIPT method has been a crucial tool in the development of magnetic tunnel junction (MTJ) stacks suitable for magnetic random-access memories for more than a decade. On two MTJ stacks, the measurement precision of resistance-area product and tunneling magnetoresistance...... was improved by up to a factor of 3.5 and the measurement reproducibility by up to a factor of 17, thanks to our improved position correction technique....

  14. Significant breakthrough in proprietary deepwater natural gas exploration in the northern South China Sea and its inspiration

    Directory of Open Access Journals (Sweden)

    Yuhong Xie

    2014-12-01

    Full Text Available In 2014, Zhanjiang Branch of CNOOC Limited obtained high oil and gas flows (160 × 104 m3/d in Well LS 17-2-1 in northern South China Sea. The tested formation is the Neogene Upper Miocene Huangliu Fm. This is the first self-explored natural gas field in deep water area in China. Exploration in this area underwent three periods: (1 Reconnaissance exploration period (before 2002: Limited by techniques, the major exploration was in shallow water areas; (2 Foreign cooperative exploration period (2002–2012: As the discovered reserve scale was small, and there is no economic benefit, the partners successively gave up their exploration equities in the deep water area of western South China Sea; however, the high quality source rocks and reservoirs were confirmed in the deep water area of the South China Sea, revealing the mask of hydrocarbon exploration in this region; (3 Self-exploration period (since 2013: Relying on national science and technology major projects and its scientific research and production, Zhanjiang Company of CNOOC conducted several scientific researches on seismic data acquisition and processing, high-quality reservoir distribution, key factors for hydrocarbon accumulation in deep water areas, optimized and confirmed Lingshui 17-2 structure as the first drilling target, and obtained significant exploration breakthrough. Lingshui 17-2 structure is located in the Ledong-Lingshui section of the Central Canyon. Its major target layer is the Huangliu Fm. Its total thickness is over 150 m, with sandstone ratio of 75.4%, maximum single layer thickness of 52 m, porosity ranging 30.0%–33.7% (31.5% averagely, permeability ranging 293–2512 mD (633 mD averagely, belonging to reservoir with ultrahigh porosity and high-ultrahigh permeability. The exploration breakthrough in Lingshui 17-2 shows the giant potentiality of hydrocarbon exploration in this deep water area.

  15. An evaluation of total disintegration time for three different doses of sublingual fentanyl tablets in patients with breakthrough pain.

    Science.gov (United States)

    Nalamachu, Srinivas

    2013-12-01

    Breakthrough pain is common among patients with cancer and presents challenges to effective pain management. Breakthrough pain is characterized by rapid onset, severe intensity, and duration typically lasting disintegration time of three different doses of sublingual fentanyl tablets in opioid-tolerant patients. This was a single-center, non-randomized, open-label study. Opioid-tolerant adult patients (N = 30) with chronic pain were assigned to one of three dose groups and self-administered a single 100, 200, or 300 μg sublingual fentanyl tablet (Abstral(®), Galena Biopharma, Portland, OR, USA). Time to complete disintegration was measured by each patient with a stopwatch and independently verified by study personnel. Disintegration time (mean ± SD) for sublingual fentanyl tablets (all doses) was 88.2 ± 55.1 s. Mean disintegration times tended to be slightly longer for the 200 μg (96.7 ± 57.9 s) and 300 μg doses (98.6 ± 64.8 s) compared to the 100 μg dose (69.5 ± 40.5 s). Differences were not statistically significant. Disintegration time was not significantly different between men and women and was not affected by age. Sublingual fentanyl tablets dissolved rapidly (average time <2 min) in all patients, with the higher doses taking slightly more time to dissolve.

  16. Breakthrough pain in opioid-treated chronic non-malignant pain patients referred to a multidisciplinary pain centre: a preliminary study

    DEFF Research Database (Denmark)

    Højsted, J; Nielsen, P R; Eriksen, Jacob Gram

    2006-01-01

    Breakthrough pain (BTP) has not formerly been discussed as such in chronic non-malignant pain patients referred to pain centres and clinics. The purpose of the study was to investigate the prevalence, characteristics and mechanisms of BTP in opioid-treated chronic non-malignant pain patients...... referred to a pain centre and to assess the short-term effects of pain treatment....

  17. Nitrous oxide/oxygen mixture for analgesia in adult cancer patients with breakthrough pain: A randomized, double-blind controlled trial.

    Science.gov (United States)

    Liu, Q; Gao, L-L; Dai, Y-L; Li, Y-X; Wang, Y; Bai, C-F; Mu, G-X; Chai, X-M; Han, W-J; Zhou, L-J; Zhang, Y-J; Tang, L; Liu, J; Yu, J-Q

    2018-03-01

    The aim of this study was to assess the efficacy of a fixed nitrous oxide/oxygen mixture for the management of breakthrough cancer pain. A double-blind, placebo-controlled, randomized clinical trial was undertaken in the Medical ward of Tumor Hospital of General Hospital of Ningxia Medical University. 240 cancer patients with breakthrough pain were recruited and randomly received a standard pain treatment (morphine sulphate immediate release) plus a pre-prepared nitrous oxide/oxygen mixture, or the standard pain treatment plus oxygen. The primary endpoint measure was the numerical rating scale (NRS) score measured at baseline, 5 and 15 min after the beginning of treatment, and at 5 min post treatment. In all, analysis of pain score (NRS) at 5 min after the beginning of treatment shown a significant decrease in nitrous oxide/oxygen mixture treated patients with 2.8 ± 1.3 versus 5.5 ± 1.2 in controls (p nitrous oxide/oxygen was 2.0 ± 1.1 compared with 5.6 ± 1.3 for oxygen (p nitrous oxide/oxygen mixture was effective in reducing moderate to severe breakthrough pain among patients with cancer. The management of breakthrough cancer pain is always a challenge due to its temporal characteristics of rapid onset, moderate to severe in intensity, short duration (median 30-60 min). Our study find that self-administered nitrous oxide/oxygen mixture was effective in reducing moderate to severe breakthrough cancer pain. © 2017 European Pain Federation - EFIC®.

  18. Potential artifacts in interpretation of differential breakthrough of colloids and dissolved tracers in the context of transport in a zero-valent iron permeable reactive barrier

    Science.gov (United States)

    Zhang, P.; Johnson, W.P.; Piana, M.J.; Fuller, C.C.; Naftz, D.L.

    2001-01-01

    Many published studies have used visual comparison of the timing of peak breakthrough of colloids versus conservative dissolved tracers (hereafter referred to as dissolved tracers or tracers) in subsurface media to determine whether they are advected differently, and to elucidate the mechanisms of differential advection. This purely visual approach of determining differential advection may have artifacts, however, due to the attachment of colloids to subsurface media. The attachment of colloids to subsurface media may shift the colloidal peak breakthrough to earlier times, causing an apparent "faster" peak breakthrough of colloids relative to dissolve tracers even though the transport velocities for the colloids and the dissolved tracers may actually be equivalent. In this paper, a peak shift analysis was presented to illustrate the artifacts associated with the purely visual approach in determining differential advection, and to quantify the peak shift due to colloid attachment. This peak shift analysis was described within the context of microsphere and bromide transport within a zero-valent iron (ZVI) permeable reactive barrier (PRB) located in Fry Canyon, Utah. Application of the peak shift analysis to the field microsphere and bromide breakthrough data indicated that differential advection of the microspheres relative to the bromide occurred in the monitoring wells closest to the injection well in the PRB. It was hypothesized that the physical heterogeneity at the grain scale, presumably arising from differences in inter- versus intra-particle porosity, contributed to the differential advection of the microspheres versus the bromide in the PRB. The relative breakthrough (RB) of microspheres at different wells was inversely related to the ionic strength of ground water at these wells, in agreement with numerous studies showing that colloid attachment is directly related to solution ionic strength.

  19. Newspaper coverage of human-pig chimera research: A qualitative study on select media coverage of scientific breakthrough.

    Science.gov (United States)

    Hagan-Brown, Abena; Favaretto, Maddalena; Borry, Pascal

    2017-07-01

    A recently published article in the journal Cell by scientists from the Salk Institute highlighted the successful integration of stem cells from humans in pig embryos. This marks the first step toward the goal of growing human organs in animals for transplantation. There has, to date, been no research performed on the presentation of this breakthrough in the media. We thus assessed early newspaper coverage of the chimera study, looking into the descriptions as well as the benefits and concerns raised by the study mentioned by newspaper sources. We looked at newspaper coverage of the human-pig chimera study in the two weeks after the publication of the article describing the breakthrough in Cell. This time period spanned from January 26 to February 9, 2017. We used the LexisNexis Academic database and identified articles using the search string "hybrid OR chimera AND pig OR human OR embryo." The relevant articles were analyzed using qualitative content analysis. Two researchers openly coded the articles independently using themes that emerged from the raw texts. Our search yielded 31 unique articles, after extensive screening for relevance and duplicates. Through our analysis, we were able to identify several themes in a majority of the texts. Almost every article gave descriptive information about the chimera experiment with details about the study findings. All of the articles mentioned the benefits of the study, citing both immediate- and long-term goals, which included creating transplantable human organs, disease and drug development, and personalized medicine, among others. Some of the articles highlighted some ethical, social, and health concerns that the study and its future implications pose. Many of the articles also offered reassurances over the concerns brought up by the experiment. Our results appeared to align with similar research performed on the media representation of sensitive scientific news coverage. We also explored the inconsistency between

  20. Nurse-based monitoring and management of breakthrough pain in an acute pain relief and palliative care unit.

    Science.gov (United States)

    Mercadante, Sebastiano; Prestia, Giovanna; Casuccio, Alessandra

    2016-10-01

    To assess the nurses' performance in assessing, treating, and documenting breakthrough pain (BTP) in a palliative care unit where traditionally there is continuous training. The study was performed in an acute palliative care unit. Once a week, a research nurse examined the documentation regarding all the episodes of BTP registered in a specific pain chart, designed by the institutional nurse board, as part of the routine nurse activity. The charts of 50 consecutive eligible patients (32 M/18 F), were analysed. The mean number of episodes/patient was 3.3 (SD 1.61; range 1-7). 166 episodes occurred. The main BTP pain intensity was 7.06 (SD 0.82). In 7 episodes, pain intensity was not evaluated at T0. The pain intensity after 15 minutes after BTP medication was 3.01 (SD1.19). In 28 episodes, pain intensity was not evaluated at T15. The change in pain intensity was highly significant (P nurse diary. Training in a research environment allows a good nurse capability in evaluating and treating BTP, and above all, providing documentation for each BTP episode. The theoretical work and recommendations around BTP need to be translated into day-to-day clinical practice.

  1. Using a virtual breakthrough series collaborative to reduce postoperative respiratory failure in 16 Veterans Health Administration hospitals.

    Science.gov (United States)

    Zubkoff, Lisa; Neily, Julia; Mills, Peter D; Borzecki, Ann; Shin, Marlena; Lynn, Marilyn M; Gunnar, William; Rosen, Amy

    2014-01-01

    The Institute for Healthcare Improvement (IHI) Virtual Breakthrough Series (VBTS) process was used in an eight-month (June 2011-January 2012) quality improvement (QI) project to improve care related to reducing postoperative respiratory failure. The VBTS collaborative drew on Patient Safety Indicator 11: Postoperative Respiratory Failure Rate to guide changes in care at the bedside. Sixteen Veterans Health Administration hospitals, each representing a regional Veterans Integrated Service Network, participated in the QI project. During the prework phase (initial two months), hospitals formed multidisciplinary teams, selected measures related to their goals, and collected baseline data. The six-month action phase included group conference calls in which the faculty presented clinical background on the topic, discussed evidence-based processes of care, and/or presented content regarding reducing postoperative respiratory failure. During a final, six-month continuous improvement and spread phase, teams were to continue implementing changes as part of their usual processes. The six most commonly reported interventions to reduce postoperative respiratory failure focused on improving incentive spirometer use, documenting implementation of targeted interventions, oral care, standardized orders, early ambulation, and provider education. A few teams reported reduced ICU readmissions for respiratory failure. The VBTS collaborative helped teams implement process changes to help reduce postoperative respiratory complications. Teams reported initial success at implementing site-specific improvements using real-time data. The VBTS model shows promise for knowledge sharing and efficient multifacility improvement efforts, although long-term sustainability and testing in these and other settings need to be examined.

  2. Gaining insights into reactive fluid-fractured rock systems using the temporal moments of a tracer breakthrough curve.

    Science.gov (United States)

    Mukhopadhyay, Sumit; Liu, H-H; Spycher, N; Kennedy, B M

    2014-03-01

    In this paper, we show that the tracer breakthrough curves (BTCs), when the tracer chemically interacts with the solid matrix of a fractured rock, are considerably different than when it does not. Of particular interest, is the presence of a long pseudo steady state zone in the BTCs, where the tracer concentration is more or less constant over a long period of time. However, such a zone of constant concentration is not visible when either the tracer does not interact with the solid, or does so at an extremely fast rate. We show that these characteristics of the BTCs could be correlated to the parameters of the system. We develop expressions for the mean residence time and its variance for a chemically active and inactive tracer. We show that chemical interaction between the tracer and the solid increases the mean residence time and the increase depends on the distribution coefficient. We also show that the variance of residence time for a chemically active tracer is much larger than that for an inactive tracer, and it depends on both the distribution coefficient and the rate of chemical reaction. We verify these calculations against synthetic tracer BTCs, where the temporal moments are calculated by numerically integrating the tracer evolution curves. Even though we developed the mathematical expressions assuming an idealized fracture-matrix system, we believe that the mathematical expressions developed in this paper can be useful in gaining insights into reactive transport in a real fractured rock system. Published by Elsevier B.V.

  3. Factors Associated With the Control of Viral Replication and Virologic Breakthrough in a Recently Infected HIV-1 Controller

    Directory of Open Access Journals (Sweden)

    Victoria E. Walker-Sperling

    2017-02-01

    Full Text Available HIV-1 controllers are patients who control HIV-1 viral replication without antiretroviral therapy. Control is achieved very early in the course of infection, but the mechanisms through which viral replication is restricted are not fully understood. We describe a patient who presented with acute HIV-1 infection and was found to have an HIV-1 RNA level of <100 copies/mL. She did not have any known protective HLA alleles, but significant immune activation of CD8+ T cells and natural killer (NK cells was present, and both cell types inhibited viral replication. Virus cultured from this patient replicated as well in vitro as virus isolated from her partner, a patient with AIDS who was the source of transmission. Virologic breakthrough occurred 9 months after her initial presentation and was associated with an increase in CD4+ T cell activation levels and a significant decrease in NK cell inhibitory capacity. Remarkably, CD8+ T cell inhibitory capacity was preserved and there were no new escape mutations in targeted Gag epitopes. These findings suggest that fully replication-competent virus can be controlled in acute HIV-1 infection in some patients without protective HLA alleles and that NK cell responses may contribute to this early control of viral replication.

  4. The Breakthrough Listen Search for Intelligent Life: 1.1-1.9 GHz Observations of 692 Nearby Stars

    Science.gov (United States)

    Enriquez, J. Emilio; Siemion, Andrew; Foster, Griffin; Gajjar, Vishal; Hellbourg, Greg; Hickish, Jack; Isaacson, Howard; Price, Danny C.; Croft, Steve; DeBoer, David; Lebofsky, Matt; MacMahon, David H. E.; Werthimer, Dan

    2017-11-01

    We report on a search for engineered signals from a sample of 692 nearby stars using the Robert C. Byrd Green Bank Telescope, undertaken as part of the Breakthrough Listen Initiative search for extraterrestrial intelligence. Observations were made over 1.1-1.9 GHz (L band), with three sets of five-minute observations of the 692 primary targets, interspersed with five-minute observations of secondary targets. By comparing the “ON” and “OFF” observations, we are able to identify terrestrial interference and place limits on the presence of engineered signals from putative extraterrestrial civilizations inhabiting the environs of the target stars. During the analysis, 11 events passed our thresholding algorithm, but a detailed analysis of their properties indicates that they are consistent with known examples of anthropogenic radio-frequency interference. We conclude that, at the time of our observations, none of the observed systems host high-duty-cycle radio transmitters emitting between 1.1 and 1.9 GHz with an Equivalent Isotropic Radiated Power of ˜1013 W, which is readily achievable by our own civilization. Our results suggest that fewer than ˜0.1% of the stellar systems within 50 pc possess the type of transmitters searched in this survey.

  5. Application of modelling and nanotechnology-based approaches: The emergence of breakthroughs in theranostics of central nervous system disorders.

    Science.gov (United States)

    Hassanzadeh, Parichehr; Atyabi, Fatemeh; Dinarvand, Rassoul

    2017-08-01

    The limited efficiency of the current treatment options against the central nervous system (CNS) disorders has created increasing demands towards the development of novel theranostic strategies. The enormous research efforts in nanotechnology have led to the production of highly-advanced nanodevices and biomaterials in a variety of geometries and configurations for targeted delivery of genes, drugs, or growth factors across the blood-brain barrier. Meanwhile, the richness or reliability of data, drug delivery methods, therapeutic effects or potential toxicity of nanoparticles, occurrence of the unexpected phenomena due to the polydisperse or polymorphic nature of nanomaterials, and personalized theranostics have remained as challenging issues. In this respect, computational modelling has emerged as a powerful tool for rational design of nanoparticles with optimized characteristics including the selectivity, improved bioactivity, and reduced toxicity that might lead to the effective delivery of therapeutic agents. High-performance simulation techniques by shedding more light on the dynamical behaviour of neural networks and pathomechanisms of CNS disorders may provide imminent breakthroughs in nanomedicine. In the present review, the importance of integration of nanotechnology-based approaches with computational techniques for targeted delivery of theranostics to the CNS has been highlighted. Copyright © 2017. Published by Elsevier Inc.

  6. Technical and economic analysis use of flare gas into alternative energy as a breakthrough in achieving zero routine flaring

    Science.gov (United States)

    Petri, Y.; Juliza, H.; Humala, N.

    2018-03-01

    The activity of exploring natural oil and gas will produce gas flare 0.584 MMSCFD. A gas flare is the combustion of gas remaining to avoid poisonous gas like H2S and CO which is very dangerous for human and environmental health. The combustion can bring about environmental pollution and losses because it still contains valuable energy. It needs the policy to encourage the use of flare gas with Zero Routine Flaring and green productivity to reduce waste and pollution. The objective of the research was to determine the use of gas flare so that it will have economic value and can achieve Zero Routine Flaring. It was started by analysing based on volume or rate and composition gas flare was used to determine technical feasibility, and the estimation of the gas reserves as the determination of the economy of a gas well. The results showed that the use of flare gas as fuel for power generation feasible to be implemented technically and economically with Internal Rate of Return (IRR) 19.32% and the Payback Period (PP) 5 year. Thus, it can increase gas flare value economically and can achieve a breakthrough in Zero Routine Flaring.

  7. The Formation of the Image of Top-Ranked Hotels through Real Online Customer Reviews: A Corpus-Based Study of Evaluative Adjectives as Image-Formers/Providers

    OpenAIRE

    Edo Marzá, Nuria

    2013-01-01

    This study is grounded on a corpus-based analysis of evaluative adjectives as hotel image-formers/providers conducted from a multifaceted yet complementary perspective which departs from the notion of destination image formation (Gartner, 1993; Baloglu & McCleary, 1999, Gylling, 2004 among others) focused on a specific aspect, that of the hotel of destination, and to a specific genre, the online (hotel) customer review. The corpus of study, which contains more than 250 000 wor...

  8. A novel once daily microparticulate dosage form comprising lansoprazole to prevent nocturnal acid breakthrough in the case of gastro-esophageal reflux disease: preparation, pharmacokinetic and pharmacodynamic evaluation.

    Science.gov (United States)

    Alai, Milind; Lin, Wen Jen

    2013-01-01

    The objective of this study was to formulate and evaluate the lansoprazole (LPZ)-loaded microparticles to prevent nocturnal acid breakthrough in the case of gastro-esophageal reflux disease (GERD). The microparticulate delivery system was prepared by solvent evaporation method using Eudragit RS100 as a matrix polymer followed by enteric coated with Eudragit S100 and hydroxypropyl methylcellulose phthalate HP55 using spray drying method. The enteric coated microparticles were stable in gastric pH condition. In vivo pharmacokinetic and pharmacodynamic studies in male Wistar rats demonstrated that enteric coated microparticles sustained release of LPZ and promoted ulcer healing activity. In other words, the microparticulate dosage form provided effective drug concentration for a longer period as compared to conventional extended release dosage form, and showed sufficient anti-acid secretion activity to treat acid related disorders including the enrichment of nocturnal acid breakthrough event based on a once daily administration.

  9. Site characterization and validation - Tracer migration experiment in the validation drift, report 2, Part 2: breakthrough curves in the validation drift appendices 5-9

    International Nuclear Information System (INIS)

    Birgersson, L.; Widen, H.; Aagren, T.; Neretnieks, I.; Moreno, L.

    1992-01-01

    Flowrate curves for the 53 sampling areas in the validation drift with measureable flowrates are given. The sampling area 267 is treated as three separate sampling areas; 267:1, 267:2 and 267:3. The total flowrate for these three sampling areas is given in a separate plot. The flowrates are given in ml/h. The time is given in hours since April 27 00:00, 1990. Disturbances in flowrates are observed after 8500 hours due to opening of boreholes C1 and W1. Results from flowrate measurements after 8500 hours are therefore excluded. The tracer breakthrough curves for 38 sampling areas in the validation drift are given as concentration values versus time. The sampling area 267 is treated as three separate sampling areas; 267:1, 267:2 and 267:3. This gives a total of 40 breakthrough curves for each tracer. (au)

  10. Permaculture: Dreamworld or Breakthrough?

    Science.gov (United States)

    Johns, Maria

    1992-01-01

    Compares present agriculture practices to permaculture farming techniques, presents a historical perspective of permaculture and where these techniques are being successfully practiced around the world. Inserts (vignettes) enumerate the principles of permaculture and the background of Bill Mollison who conceptualized this farming practice. (MCO)

  11. Finally a breakthrough?

    DEFF Research Database (Denmark)

    Paldam, Martin; Doucouliagos, Hristos

    2015-01-01

    The authors have previously surveyed the AEL, aid (empirical) effectiveness literature, using the technique of meta-analysis. We reached the result that the small positive effect of aid on growth found in the average study is mostly a publication selection bias. This present study concentrates on...

  12. Beta Cell Breakthroughs

    Science.gov (United States)

    ... enough islets into a patient to achieve insulin independence." The so-called "Edmonton protocol" has some major ... in response to Melton's article in Cell, Baylor College of Medicine researcher Jake Kushner, MD, argued that ...

  13. Limit, breakthrough and prosperity

    International Nuclear Information System (INIS)

    Takahashi, Minoru

    1973-01-01

    It is pointed out that the flow toward serious crises is in progress with regard to energy and industrial problems. Technical and industrial preparation and countermeasure to the flow are proposed, and the existence of a certain new world attainable on the assumption that the countermeasure is successful is described. The relation between oil output and the increasing demand for energy is pointed out as a subject matter of the crisis. The contribution of oil energy to total energy, after the output turns to decreasing process, decreases by 177.87x10 6 tons (converted to coal at the rate 6848 kcal/kg) per year at maximum. Converted to the GNP of the world, this becomes (425 dollar/ton x 177.87 x 10 6 ton=75.6 x 10 9 dollar). This fluctuation width in a year must be compensated by the change of industrial structure and energy supplying means. The countermeasure and preparation are proposed from the viewpoints of the energy and the industrial structure in which nuclear power generation plays important role. The largest production on the earth limited by energy consumption and the temperature balance on the earth is investigated, and the perspective in the future is given. (Yamamoto, Y.)

  14. A breakthrough biosorbent in removing heavy metals: Equilibrium, kinetic, thermodynamic and mechanism analyses in a lab-scale study.

    Science.gov (United States)

    Abdolali, Atefeh; Ngo, Huu Hao; Guo, Wenshan; Lu, Shaoyong; Chen, Shiao-Shing; Nguyen, Nguyen Cong; Zhang, Xinbo; Wang, Jie; Wu, Yun

    2016-01-15

    A breakthrough biosorbent namely multi-metal binding biosorbent (MMBB) made from a combination of tea wastes, maple leaves and mandarin peels, was prepared to evaluate their biosorptive potential for removal of Cd(II), Cu(II), Pb(II) and Zn(II) from multi-metal aqueous solutions. FTIR and SEM were conducted, before and after biosorption, to explore the intensity and position of the available functional groups and changes in adsorbent surface morphology. Carboxylic, hydroxyl and amine groups were found to be the principal functional groups for the sorption of metals. MMBB exhibited best performance at pH 5.5 with maximum sorption capacities of 31.73, 41.06, 76.25 and 26.63 mg/g for Cd(II), Cu(II), Pb(II) and Zn(II), respectively. Pseudo-first and pseudo-second-order models represented the kinetic experimental data in different initial metal concentrations very well. Among two-parameter adsorption isotherm models, the Langmuir equation gave a better fit of the equilibrium data. For Cu(II) and Zn(II), the Khan isotherm describes better biosorption conditions while for Cd(II) and Pb(II), the Sips model was found to provide the best correlation of the biosorption equilibrium data. The calculated thermodynamic parameters indicated feasible, spontaneous and exothermic biosorption process. Overall, this novel MMBB can effectively be utilized as an adsorbent to remove heavy metal ions from aqueous solutions. Copyright © 2015 Elsevier B.V. All rights reserved.

  15. Relationship between onset of pain relief and patient satisfaction with fentanyl pectin nasal spray for breakthrough pain in cancer.

    Science.gov (United States)

    Torres, Luis M; Revnic, Julia; Knight, Alastair D; Perelman, Michael

    2014-10-01

    Satisfaction with pain relief in patients with breakthrough pain in cancer (BTPc) has typically been assessed by overall efficacy without consideration of the rapidity of that response. To determine the relationship between speed of onset of pain relief and patient satisfaction for treated BTPc episodes overall and for individual treatments. Pooled data from two randomized, double-blinded crossover studies. Patients having 1-4 BTPc episodes per day on ≥60 mg/day oral morphine or equivalent. Episodes treated with fentanyl pectin nasal spray (FPNS; 100-800 μg), immediate-release morphine sulfate (IRMS), or placebo. Pain intensity was measured on an 11-point scale (5-60 minutes posttreatment); satisfaction was measured on a 4-point scale (30 and 60 minutes). The primary analysis assessed the overall relationship of time to onset of pain relief (pain intensity difference [PID]≥1) or time to clinically meaningfully reduction in pain (PID≥2) versus patient satisfaction and overall pain intensity (summed pain intensity difference at 30 [SPID30] and 60 minutes [SPID60]) assessed by analysis of variance (ANOVA). A secondary analysis assessed whether satisfaction was different between treatments using a within-patient comparison. Eight hundred thirty-one FPNS-treated, 368 IRMS-treated, and 200 placebo-treated episodes were analyzed. Overall, within the pool there was a statistically significant relationship between time to onset of pain relief (PID≥1 and PID≥2) and patient satisfaction (both speed of relief and overall) at 30 and 60 minutes (ppain intensity reduction. When treatment groups were compared using within-patient data, FPNS provided earlier onset of pain relief than IRMS or placebo (ppain relief resulted in greater patient satisfaction and overall relief of pain; between-treatment comparisons showed that FPNS provided earlier pain relief and greater satisfaction than IRMS or placebo.

  16. Development, validation and psychometric properties of a diagnostic/prognostic tool for breakthrough pain in mixed chronic-pain patients.

    Science.gov (United States)

    Samolsky Dekel, Boaz Gedaliahu; Remondini, Francesca; Gori, Alberto; Vasarri, Alessio; Di Nino, GianFranco; Melotti, Rita Maria

    2016-02-01

    Breakthrough pain (BTP) shows variable prevalence in different clinical contexts of cancer and non-cancer patients. BTP diagnostic tools with demonstrated reliability, validation and prognostic capability are lacking. We report the development, psychometric and validation properties of a diagnostic/prognostic tool, the IQ-BTP, for BTP recognition, its likelihood and clinical features among chronic-pain (CP) patients. n=120 consecutive mixed cancer/non-cancer CP in/outpatients. Development, psychometric analyses and formal validation included: Face/Content validity (by 'experts' opinion and assessing the relationship between the IQ-BTP classes and criteria derived from BTP operational-case-definition); Construct validity, by Principle Component Analysis (PCA); and the strength of Spearman correlation between IQ-BTP classes and the Brief Pain Inventory (BPI) items; Reliability, by Cronbach's alpha statistics. Associations with clinical/demographic moderators were assessed applying χ(2) analysis. Potential-BTP was found in 36.7% of patients (38.4% of non-cancer and 32.4% of cancer patients). Among these the likelihood for BTP diagnosis was 'high' in 25%, 'intermediate' in 41% and, 'low' 34% of patients. Analyses showed significant differences between IQ-BTP classes and between the latter BPI pain-item scores. Correlation between IQ-BTP classes and BPI items was moderate. PCA and scree test identified 3 components accounting for 62.3% of the variance. Cronbach's alpha was 0.71. The IQ-BTP showed satisfactory psychometric and validation properties. With adequate feasibility it enabled the allocating of cancer/non-cancer CP patients in three prognostic classes. Results are sufficient to warrant a subsequent impact study of the IQ-BTP as prognostic model and screening tool for BTP in both CP populations. Copyright © 2016 Elsevier B.V. All rights reserved.

  17. Efficacy and Safety of Sublingual Fentanyl Tablets in Breakthrough Cancer Pain Management According to Cancer Stage and Background Opioid Medication.

    Science.gov (United States)

    Guitart, Jordi; Vargas, María Isabel; De Sanctis, Vicente; Folch, Jordi; Salazar, Rafael; Fuentes, José; Coma, Joan; Ferreras, Julia; Moya, Jordi; Tomás, Albert; Estivill, Pere; Rodelas, Francisco; Jiménez, Antonio Javier; Sanz, Almudena

    2018-03-23

    Our objective was to assess the effect of sublingual fentanyl tablets (SFTs) on pain relief, quality of life, and adverse effects in patients with cancer pain, according to cancer stage and background opioid regimen. Subgroup analyses from a recently completed study were performed according to cancer stage (locally advanced cancer [LAC] vs. metastatic cancer) and most frequent background opioid medication (fentanyl vs. oxycodone/naloxone). The efficacy and safety of SFTs were evaluated, recording pain intensity (PI), onset of pain relief, and adverse events (AEs). Health status was assessed with the Short Form 12, version 2 (SF-12v2) questionnaire and the Hospital Anxiety and Depression Scale (anxiety subscale [HADS-A] and depression subscale [HADS-D]). In total, 54 (67.5%) patients had LAC and 26 (32.5%) had metastatic cancer. The oxycodone/naloxone group included 39 patients (48.1%) and the fentanyl group 29 (35.8%). In all subgroups, pain relief was achieved within 5 min in an increasing number of individuals over time; at the end of the study, PI values decreased (PI-end: 44.4% for LAC vs. 57.9% for metastatic cancer; 44.4% for fentanyl vs. 38.6% for oxycodone/naloxone). HADS and mental component summary (MCS) SF-12v2 scores significantly improved in the LAC group (HADS-A 9.44-8.04; HADS-D 10.46-8.15; MCS 44.69-45.94) and in the fentanyl group (HADS-A 10.05-8.33; HADS-D 11.95-8.76; MCS 44.38-47.19). AEs were reported in few patients and were mostly mild. Exploratory subgroup analyses show the efficacy and safety of SFTs for the treatment of breakthrough pain in patients with cancer, regardless of their cancer stage and background opioid medication.

  18. Voriconazole pre-exposure selects for breakthrough mucormycosis in a mixed model of Aspergillus fumigatus-Rhizopus oryzae pulmonary infection.

    Science.gov (United States)

    Lewis, Russell E; Liao, Guangling; Wang, Weiqun; Prince, Randall A; Kontoyiannis, Dimitrios P

    2011-01-01

    Mucormycosis is an uncommon fungal infection that has been increasingly reported in severely immunocompromised patients receiving Aspergillus-active antifungals. Although clinical studies and pre-clinical animal models have suggested a unique predisposition for breakthrough mucormycoses in patients receiving voriconazole, no study has specifically evaluated the selection dynamics of various Aspergillus -active antifungal classes in vivo. We utilized an Aspergillus fumigatus:Rhizopus oryzae (10:1) model of mixed fungal pneumonia in corticosteroid-immunosuppressed mice to compare the selection dynamics of daily liposomal-amphotericin B (L-AMB), micafungin (MCFG) and voriconazole (VRC) therapy. A. fumigatus and R. oryzae lung fungal burden were serially monitored in parallel using non-cross-amplifying quantitative real-time PCR assays for each fungal genus. Additionally, experiments were performed where the R. oryzae component of the mixed inoculum was serially-passed on VRC-containing agar before animal infection. We found prior exposure to voriconazole in vitro, consistently resulted in a 1.5-2 log 10 increase in R. oryzae fungal burden by day +5 in vivo relative to animals infected with the non-VRC preexposed inoculum, irrespective of the antifungal-treatment administered in mice (P ≤ 0.02 all treatment groups). Mice infected with the VRC-preexposed inoculum and subsequently treated with saline or VRC had the highest mortality rates (82-86%), followed by MCFG (55%) then L-AMB (39%, P = 0.04 vs. control). However, in vivo treatment alone with voriconazole alone did not consistently increase the virulence of non- voriconazole preexposed R. oryzae versus controls. We conclude that exposure of R. oryzae sporangiospores to voriconazole in vitro modulates the subsequent growth rate and/or virulence of the fungus in vivo, which reduces effectiveness of Mucorales-active antifungals. The mechanisms underlying this phenotypic change are unknown.

  19. Effect of flow rate on the sorption breakthrough behaviors of uranium(VI), phosphate, and fulvic acid onto a silica column

    International Nuclear Information System (INIS)

    Five column experiments have been carried out to investigate the effect of flow rate on the breakthrough curves (BTCs) of phosphate, fulvic acid, and uranium(VI) onto a silica column. Both BTCs of phosphate and fulvic acid, and three BTCs of uranium(VI) in the presence and absence of phosphate or fulvic acid at high flow rate published in the previous paper were compared with corresponding initial parts of BTCs at low flow rate in this paper. Each BTC in this paper was expressed as both C/C o -t and C/C o -V/V o plots, where C and C o are the concentrations in the influent and the effluent respectively, t and V are the time and the effluent volume from the start of injection of pulse solution respectively, V o is the pore volume of the SiO 2 column. Based on the experimental results and the relationship among V, t, and flow rate F, it was found that there are advantages to using C/C o -V/V o plot as BTC to study the effect of flow rate. Based on these comparisons of C/C o -V/V o plots at different flow rates and the theoretical analysis from the Bohart-Adams sorption model, it was found that the right shift (increase in V/V o of breakthrough), the left shift (decrease in V/V o of breakthrough), and the non-shift (non-change in V/V o of breakthrough) of initial parts of BTCs with increasing flow rate are certain to occur instead of only left shift and that three different trends of shifts can be mainly attributed to different rate-controlling mechanisms of sorption process. (author)

  20. Identifying breakthrough technologies for the production of basic chemicals. A long term view on the sustainable production of ammonia, olefins and aromatics in the European region

    Energy Technology Data Exchange (ETDEWEB)

    Benner, J.; Van Lieshout, M.; Croezen, H.

    2012-01-15

    The European Commission's Roadmap for a competitive and low carbon economy in 2050 indicates that greenhouse gas emissions (GHG) in all sectors should be significantly reduced to meet the European Union (EU) objective of 80 to 95% greenhouse gas emission reductions by 2050 compared to 1990 levels. The European Commission indicated in the Roadmap that the EU's industrial sectors should reduce emissions by 83 to 87% domestically by 2050 compared to 1990 levels. The objective of this study is to explore breakthrough abatement technologies in three processes in the European chemical industry that can considerably contribute to achieving the required greenhouse gas emission reductions. In this context we have assessed the processes for the production of: (1) Ammonia; (2) Olefins; (3) Aromatics (BTX). For all three processes possible breakthrough abatement technologies were found, allowing for reductions in GHG emissions varying between 50 and 100% compared to the conventional processes. Our finding regarding the chemical industry and our earlier findings regarding options in the steel, cement and pulp and paper industries show that promising breakthrough abatement technologies are available for European energy-intensive industries to contribute to a low-carbon economy. However, large scale deployment requires an integrated EU industry and energy policy allowing for a resource efficient and sustainable use of available biomass, CCS storage capacity and renewable energy capacity.

  1. Foreknowledge of breakthroughs science and technology foresight, and the early identification of areas of breakthrough; L'anticipation des ruptures. La prospective des sciences et techniques, et l'identification precoce des zones de rupture

    Energy Technology Data Exchange (ETDEWEB)

    Papon, P. [Ecole de Physique et Chimie de Paris, 75 (France); Observatoire des Sciences et des Techniques, 75 - Paris (France)

    2010-09-15

    The progress of science and technology has been so rapid in the last few decades that it receives especial attention in forecasting and foresight exercises. But, because they are too greatly in thrall to the dominant paradigms and hence favour a linear perspective, the experts who deal with these questions pay more attention to the future of technologies than to scientific advances and revolutions. The bulk of their work consists, then, in anticipating, by various different methods (Delphi surveys, Road-maps, etc.), at what date a particular technology might be available (without, however, always correctly gauging the conditions for its social appropriation or the applications to which it might be put). In this article, Pierre Papon expounds a much more original and promising approach for attempting to anticipate the discoveries that are likely radically to transform the fields of scientific knowledge by investigating the phenomena that may potentially lead to fundamental revolutions. After reminding us of the premonitory thinking of a number of authors - in the fields, for example, of genetics and computer science -, he endeavors to describe some of the dominant paradigms, particularly in quantum physics and molecular biology. In this way, he shows the advances they have made possible, and also their limitations, and explores what new scientific leaps forward might occur, bringing radically new technological breakthroughs between now and 2050. Papon reminds us, at the same time that, 'as science is not something isolated within society'; it has a duty to contribute to meeting the great challenges that face us - of work, health, nutrition and sustainable development, particularly where energy and climate are concerned. He therefore examines the ways in which future scientific and technological advances might provide solutions and how important it might be to 'translate the questions society poses into scientific questions'. He thus argues

  2. Long-Acting Injectable Risperidone for Relapse Prevention and Control of Breakthrough Symptoms After a Recent First Episode of Schizophrenia

    Science.gov (United States)

    Subotnik, Kenneth L.; Casaus, Laurie R.; Ventura, Joseph; Luo, John S.; Hellemann, Gerhard S.; Gretchen-Doorly, Denise; Marder, Stephen; Nuechterlein, Keith H.

    2016-01-01

    IMPORTANCE Long-acting, injectable, second-generation antipsychotic medication has tremendous potential to bring clinical stability to persons with schizophrenia. However, long-acting medications are rarely used following a first episode of schizophrenia. OBJECTIVE To compare the clinical efficacy of the long-acting injectable formulation of risperidone with the oral formulation in the early course of schizophrenia. DESIGN, SETTING, AND PARTICIPANTS A randomized clinical trial performed at a university-based research clinic, between 2005 and 2012. Eighty-six patients with recent onset of schizophrenia were randomized to receive long-acting injectable risperidone or oral risperidone. Half of each group was simultaneously randomized to receive cognitive remediation to improve cognitive functioning or healthy-behaviors training to improve lifestyle habits and well-being. An intent-to-treat analysis was performed between October 4, 2012, and November 12, 2014. INTERVENTIONS A 12-month trial comparing the long-acting injectable vs oral risperidone and cognitive remediation vs healthy-behaviors training. MAIN OUTCOMES AND MEASURES Psychotic relapse and control of breakthrough psychotic symptoms. RESULTS Of the 86 patients randomized, 3 refused treatment in the long-acting injectable risperidone group. The psychotic exacerbation and/or relapse rate was lower for the long-acting risperidone group compared with the oral group (5% vs 33%; χ21 = 11.1; P risperidone better controlled mean levels of hallucinations and delusions throughout follow-up (β = −0.30; t68 = −2.6, P = .01). The cognitive remediation and healthy-behaviors training groups did not differ significantly regarding psychotic relapse, psychotic symptom control, or hospitalization rates, and there were no significant interactions between the 2 medications and the 2 psychosocial treatments. Discontinuations owing to inadequate clinical response were more common in the oral group than in the long

  3. From golden rice to drought-tolerant maize and new techniques to control plant disease - can we expect a breakthrough in crop production?

    Directory of Open Access Journals (Sweden)

    Tamas Komives

    2017-02-01

    Full Text Available This Minireview paper summarizes the views of the authors on the history and current status of golden rice – the highly promising concept of introducing new genes into existing rice strains to make them capable to accumulate beta carotene (the biochemical precursor of vitamin A in the grain. Based on the questionable success of genetically modified organisms to achieve a significant increase in food and feed production we speculate on the possibility of a breakthrough in this area via the latest discoveries in molecular biological techniques.

  4. Potential for neutrino and radioactive beam physics of the foreseen upgrades of the CERN accelerators

    CERN Document Server

    Benedikt, Michael; Ruggiero, F; Ostojic, R; Scandale, Walter; Shaposhnikova, Elena; Wenninger, J

    2006-01-01

    The integrated luminosity in the LHC experiments will directly depend upon the reliability and the level of performance of the injectors (Linac2, PSB, PS, SPS). The working group on "Proton Accelerators for the Future" which is in charge of elaborating a baseline scenario for the upgrade of these accelerators in close collaboration with the group looking after "Physics Opportunities with Future Proton Accelerators" has published its views for maximizing the LHC performance in a first document. The present report updates the information concerning the proposed future accelerators and highlights their interest for a possible neutrino facility at CERN as well as for a next generation ISOL-type radioactive ion beam facility ("EURISOL").

  5. Comparison between theoretical values foreseen and measured during the commissioning of second cycle of Angra-1

    International Nuclear Information System (INIS)

    Angelkorte, G.; Dias, A.M.; Sakai, M.

    1988-01-01

    The purpose of this paper is to present the most important results of the comparison of the data measured during the start-up tests for the second cycle of Angra 1 with the calculated values for this cycle. This short comparison considered the following quantities: Critical boron concentration, Control rod worths, Isothermal temperature coefficient, Reaction rates of the incore detector system. The calculated results showed good agreement with the measured ones remaining within the acceptation criteria limits, confirming the fuel management calculations for the second cycle, namely that for the reload scheme obtained, the core is capable of operating at nominal power safety and without restrictions. (author) [pt

  6. Pulsed laser modification of transparent dielectrics: what can be foreseen and predicted by numerical simulations?

    Czech Academy of Sciences Publication Activity Database

    Bulgakova, Nadezhda M.; Zhukov, V.P.; Meshcheryakov, Y.P.; Gemini, Laura; Brajer, Jan; Rostohar, Danijela; Mocek, Tomáš

    2014-01-01

    Roč. 31, č. 11 (2014), C8-C14 ISSN 0740-3224 R&D Projects: GA MŠk ED2.1.00/01.0027; GA MŠk EE2.3.20.0143 Grant - others:HILASE(XE) CZ.1.05/2.1.00/01.0027; OP VK 6(XE) CZ.1.07/2.3.00/20.0143 Institutional support: RVO:68378271 Keywords : femtosecond-laser * ultrafast electron * dynamics * inscription * silica * glass Subject RIV: BH - Optics, Masers, Lasers Impact factor: 1.970, year: 2014

  7. Neuroscience is awaiting for a breakthrough: an essay bridging the concepts of Descartes, Einstein, Heisenberg, Hebb and Hayek with the explanatory formulations in this special issue.

    Science.gov (United States)

    Başar, Erol; Karakaş, Sirel

    2006-05-01

    The paper presents gedankenmodels which, based on the theories and models in the present special issue, describe the conditions for a breakthrough in brain sciences and neuroscience. The new model is based on contemporary findings which show that the brain and its cognitive processes show super-synchronization. Accordingly, understanding the brain/body-mind complex is possible only when these three are considered as a wholistic entity and not as discrete structures or functions. Such a breakthrough and the related perspectives to the brain/body-mind complex will involve a transition from the mechanistic Cartesian system to a nebulous Cartesian system, one that is basically characterized by parallel computing and is further parallel to quantum mechanics. This integrated outlook on the brain/body-mind, or dynamic functionality, will make the treatment of also the meta-cognitive processes and the greater part of the iceberg, the unconscious, possible. All this will be possible only through the adoption of a multidisciplinary approach that will bring together the knowledge and the technology of the four P's which consist of physics, physiology, psychology and philosophy. The genetic approach to the functional dynamics of the brain/body-mind, where the oscillatory responses were found to be laws of brain activity, is presented in this volume as one of the most recent perspectives of neuroscience.

  8. The market of smart grids in France and Europe. A technological breakthrough... a risk of overturning the energy value chain with the arrival of newcomers

    International Nuclear Information System (INIS)

    2012-05-01

    This article presents the content of a market study which aimed at giving a picture of the development of smart grids in France and in Europe and at assessing their growth potential, at assessing the challenges of this technological breakthrough for consumers and at identifying business opportunities for the actors of the sector, at imagining tomorrow's offer in energy efficiency, at comparing the position and strategies of the different actors (energy providers, equipment manufacturers, pure players, NTIC, etc.), and at anticipating the evolutions of the competition structure with the presence of newcomers possessing huge financial means such as Apple, Google or Microsoft. The report outlines the opportunities of development for smart grids and remaining obstacles, presents the European regulatory context, describes the current status of development of smart grids, presents several pan-European projects, proposes a focus on initiatives in France, gives an overview of the competition, and discusses the perspectives for the market by 2020

  9. Impact of opioid rescue medication for breakthrough pain on the efficacy and tolerability of long-acting opioids in patients with chronic non-malignant pain

    Science.gov (United States)

    Devulder, J.; Jacobs, A.; Richarz, U.; Wiggett, H.

    2009-01-01

    Background There is little evidence that short-acting opioids as rescue medication for breakthrough pain is an optimal long-term treatment strategy in chronic non-malignant pain. We compared clinical studies of long-acting opioids that allowed short-acting opioid rescue medication with those that did not, to determine the impact of opioid rescue medication use on the analgesic efficacy and tolerability of chronic opioid therapy in patients with chronic non-malignant pain. Methods We searched MEDLINE (1950 to July 2006) and EMBASE (1974 to July 2006) using terms for chronic non-malignant pain and long-acting opioids. Independent review of the search results identified 48 studies that met the study selection criteria. The effect of opioid rescue medication on analgesic efficacy and the incidence of common opioid-related side-effects were analysed using meta-regression. Results After adjusting for potentially confounding variables (study design and type of opioid), the difference in analgesic efficacy between the ‘rescue’ and the ‘no rescue’ studies was not significant, with regression coefficients close to 0 and 95% confidence intervals that excluded an effect of more than 18 points on a 0–100 scale in each case. There was also no significant difference between the ‘rescue’ and the ‘no rescue’ studies for the incidence of nausea, constipation, or somnolence in both the unadjusted and the adjusted analyses. Conclusions We found no evidence that rescue medication with short-acting opioids for breakthrough pain affects analgesic efficacy of long-acting opioids or the incidence of common opioid-related side-effects among chronic non-malignant pain patients. PMID:19736216

  10. A study of vaccine-induced immune pressure on breakthrough infections in the Phambili phase 2b HIV-1 vaccine efficacy trial

    Science.gov (United States)

    Rolland, M.; Magaret, C.A.; Rademeyer, C.; Fiore-Gartland, A.; Edlefsen, P.T.; DeCamp, A.; Ahmed, H.; Ngandu, N.; Larsen, B.B.; Frahm, N.; Marais, J.; Thebus, R.; Geraghty, D.; Hural, J.; Corey, L.; Kublin, J.; Gray, G.; McElrath, M.J.; Mullins, J.I.; Gilbert, P.B.; Williamson, C.

    2016-01-01

    Introduction The Merck Adenovirus-5 Gag/Pol/Nef HIV-1 subtype-B vaccine evaluated in predominately subtype B epidemic regions (Step Study), while not preventing infection, exerted vaccine-induced immune pressure on HIV-1 breakthrough infections. Here we investigated if the same vaccine exerted immune pressure when tested in the Phambili Phase 2b study in a subtype C epidemic. Materials and methods A sieve analysis, which compares breakthrough viruses from placebo and vaccine arms, was performed on 277 near full-length genomes generated from 23 vaccine and 20 placebo recipients. Vaccine coverage was estimated by computing the percentage of 9-mers that were exact matches to the vaccine insert. Results There was significantly greater protein distances from the vaccine immunogen sequence in Gag (p = 0.045) and Nef (p = 0.021) in viruses infecting vaccine recipients compared to placebo recipients. Twenty-seven putative sites of vaccine-induced pressure were identified (p sieve effect in Step was driven by HLA A*02:01; an allele which was found in low frequency in Phambili participants compared to Step participants. Furthermore, the coverage of the vaccine against subtype C Phambili viruses was 31%, 46% and 14% for Gag, Pol and Nef, respectively, compared to subtype B Step virus coverage of 56%, 61% and 26%, respectively. Discussion This study presents evidence of sieve effects in Gag and Nef; however could not confirm effects on specific amino acid sites. We propose that this weaker signal of vaccine immune pressure detected in the Phambili study compared to the Step study may have been influenced by differences in host genetics (HLA allele frequency) and reduced impact of vaccine-induced immune responses due to mismatch between the viral subtype in the vaccine and infecting subtypes. PMID:27756485

  11. Effect of electro-acupuncture stimulation of Ximen (PC4) and Neiguan (PC6) on remifentanil-induced breakthrough pain following thoracal esophagectomy.

    Science.gov (United States)

    Xie, Yan-hu; Chai, Xiao-qing; Wang, Yue-lan; Gao, Yan-chun; Ma, Jun

    2014-08-01

    The clinical analgesic effect of electro-acupuncture (EA) stimulation (EAS) on breakthrough pain induced by remifentanil in patients undergoing radical thoracic esophagectomy, and the mechanisms were assessed. Sixty patients (ASAIII) scheduled for elective radical esophagectomy were randomized into three groups: group A (control) receiving a general anesthesia only; group B (sham) given EA needles at PC4 (Ximen) and PC6 (Neiguan) but no stimulation; and group C (EAS) electrically given EAS of the ipsilateral PC4 and PC6 throughout the surgery. The EAS consisting of a disperse-dense wave with a low frequency of 2 Hz and a high frequency of 20 Hz, was performed 30 min prior to induction of general anesthesia and continued through the surgery. At the emergence, sufentanil infusion was given for postoperative analgesia with loading dose of 7.5 μg, followed by a continuous infusion of 2.25 μg/h. The patient self-administration of sufentanil was 0.75 μg with a lockout of 15 min as needed. Additional breakthrough pain was treated with dezocine (5 mg) intravenously at the patient's request. Blood samples were collected before (T1), 2 h (T2), 24 h (T3), and 48 h (T4) after operation to measure the plasma β-EP, PGE2, and 5-HT. The operative time, the total dose of sufentanil and the dose of self-administration, and the rescue doses of dezocine were recorded. Visual Analogue Scale (VAS) scores at 2, 12, 24 and 48 h postoperatively and the incidence of apnea and severe hypotension were recorded. The results showed that the gender, age, weight, operative time and remifentanil consumption were comparable among 3 groups. Patients in EAS group had the lowest VAS scores postoperatively among the three groups (P217.74±76.45 ng/mL) groups. For intra-group comparison, plasma 5-HT and PGE2 levels in control and sham groups at T2 and T3, and β-EP in EAS group at T3 and T4 were significantly higher than those at T1 (P0.05). No apnea or severe hypotension was observed in any group

  12. Breakthrough Curve Analysis for Column Dynamics Sorption of Mn(II Ions from Wastewater by Using Mangostana garcinia Peel-Based Granular-Activated Carbon

    Directory of Open Access Journals (Sweden)

    Z. Z. Chowdhury

    2013-01-01

    Full Text Available The potential of granular-activated carbon (GAC derived from agrowaste of Mangostene (Mangostana garcinia fruit peel was investigated in batch and fixed bed system as a replacement of current expensive methods for treating wastewater contaminated by manganese, Mn(II cations. Batch equilibrium data was analyzed by Langmuir, Freundlich, and Temkin isotherm models at different temperatures. The effect of inlet metal ion concentration (50 mg/L, 70 mg/L, and 100 mg/L, feed flow rate (1 mL/min and 3 mL/min, and activated carbon bed height (4.5 cm and 3 cm on the breakthrough characteristics of the fixed bed sorption system were determined. The adsorption data were fitted with well-established column models, namely, Thomas, Yoon-Nelson, and Adams-Bohart. The results were best-fitted with Thomas and Yoon-Nelson models rather than Adams-Bohart model for all conditions. The column had been regenerated and reused consecutively for five cycles. The results demonstrated that the prepared activated carbon was suitable for removal of Mn(II ions from wastewater using batch as well as fixed bed sorption system.

  13. How nurses assess breakthrough cancer pain, and the impact of this pain on patients' daily lives--results of a European survey.

    Science.gov (United States)

    Rustøen, Tone; Geerling, Jenske I; Pappa, Theodora; Rundström, Carina; Weisse, Isolde; Williams, Sian C; Zavratnik, Bostjan; Wengström, Yvonne

    2013-08-01

    To increase our knowledge of how nurses assess breakthrough cancer pain (BTCP); and whether they find it difficult to distinguish BTCP from background pain; how they estimate the impact of BTCP on patients' daily lives, and the factors that nurses consider to induce BTCP. Variations in their use of assessment tools and their ability to distinguish between different types of pain were also examined in terms of the number of years of oncology nursing experience and the practice in different countries. In total, 1241 nurses (90% female) who care for patients with cancer, from 12 European countries, completed a survey questionnaire. Half the sample had >9 years of experience in oncology nursing. Although 39% had no pain assessment tool to help them distinguish between types of pain, 95% of those who used a tool found it useful. Furthermore, 37% reported that they had problems distinguishing background pain from BTCP. Movement was identified as the factor that most commonly exacerbated BTCP across all countries. The nurses reported that BTCP greatly interfered with patients' everyday activities, and they rated the patients' enjoyment of life as most strongly affected. The use of tools and the ability to distinguish between different pains varied between European countries and with years of experience in oncology nursing. The nurses reported that BTCP greatly interfered with patients' lives, and many nurses had problems distinguishing between background pain and BTCP. Nurses require more knowledge about BTCP management, and guidelines should be developed for clinical use. Copyright © 2012 Elsevier Ltd. All rights reserved.

  14. Virtual Breakthrough Series, Part 1: Preventing Catheter-Associated Urinary Tract Infection and Hospital-Acquired Pressure Ulcers in the Veterans Health Administration.

    Science.gov (United States)

    Zubkoff, Lisa; Neily, Julia; King, Beth J; Dellefield, Mary Ellen; Krein, Sarah; Young-Xu, Yinong; Boar, Shoshana; Mills, Peter D

    2016-11-01

    In 2014 the Veterans Health Administration (VHA) of the Department of Veterans Affairs (VA) implemented a Virtual Breakthrough Series (VBTS) collaborative to help VHA facilities prevent hospital-acquired conditions: catheter-associated urinary tract infection (CAUTI) and hospital-acquired pressure ulcers (HAPUs). During the prework phase, participating facilities assembled a multidisciplinary team, assessed their current system for CAUTI or HAPU prevention, and examined baseline data to set improvement aims. The action phase consisted of educational conference calls, coaching, and monthly team reports. Learning was conducted via phone, web-based options, and e-mail. The CAUTI bundle focused on four key principles: (1) avoidance of indwelling urinary catheters, (2) proper insertion technique, (3) proper catheter maintenance, and (4) timely removal of the indwelling catheter. The HAPU bundle focused on assessment and inspection, pressure-relieving surfaces, turning and repositioning, incontinence management, and nutrition/hydration assessment and intervention. For the 18 participating units, the mean aggregated CAUTI rate decreased from 2.37 during the prework phase to 1.06 per 1,000 catheter-days during the action (implementation) phase (p model for implementing a virtual model for improvement. Copyright 2016 The Joint Commission.

  15. Dilated thin-walled blood and lymphatic vessels in human endometrium: a potential role for VEGF-D in progestin-induced break-through bleeding.

    Directory of Open Access Journals (Sweden)

    Jacqueline F Donoghue

    Full Text Available Progestins provide safe, effective and cheap options for contraception as well as the treatment of a variety of gynaecological disorders. Episodes of irregular endometrial bleeding or breakthrough bleeding (BTB are a major unwanted side effect of progestin treatment, such that BTB is the leading cause for discontinued use of an otherwise effective and popular medication. The cellular mechanisms leading to BTB are poorly understood. In this study, we make the novel finding that the large, dilated, thin walled vessels characteristic of human progestin-treated endometrium include both blood and lymphatic vessels. Increased blood and lymphatic vessel diameter are features of VEGF-D action in other tissues and we show by immunolocalisation and Western blotting that stromal cell decidualisation results in a significant increase in VEGF-D protein production, particularly of the proteolytically processed 21 kD form. Using a NOD/scid mouse model with xenografted human endometrium we were able to show that progestin treatment causes decidualisation, VEGF-D production and endometrial vessel dilation. Our results lead to a novel hypothesis to explain BTB, with stromal cell decidualisation rather than progestin treatment per se being the proposed causative event, and VEGF-D being the proposed effector agent.

  16. Economical and Energy Efficiency of Iron and Steel Industry Reindustrialisation in Russia Based on Implementation of Breakthrough Energy-Saving Technologies

    Science.gov (United States)

    Shevelev, L. N.

    2017-12-01

    Estimates were given of economical and energy efficiency of breakthrough energy-saving technologies, which increase competitive advantages and provide energy efficiency of production while reducing negative impact on the environment through reduction of emissions of harmful substances and greenhouse gases in the atmosphere. Among these technologies, preference is given to the following: pulverized coal fuel, blast-furnace gas recycling, gasification of non-coking coal in bubble-type gas-generators, iron-ore concentrate briquetting with steam coal with further use of ore-coal briquettes in electric furnace steel making. Implementation of these technologies at iron and steel works will significantly reduce the energy intensity of production through reduction of expensive coking coal consumption by means of their substitution by less expensive non-coking (steam) coal, and natural gas substitution by own secondary energy resource, which is the reducing gas. As the result, plants will get an opportunity to become self-sufficient in energy-resources and free themselves entirely from expensive purchased energy resources (natural gas, electric power, and partially coking coals), and cross over to low-carbon development.

  17. Fabrication of wide-bandgap transparent electrodes by using conductive filaments: performance breakthrough in vertical-type GaN LED.

    Science.gov (United States)

    Kim, Su Jin; Kim, Hee-Dong; Kim, Kyeong Heon; Shin, Hee Woong; Han, Il Ki; Kim, Tae Geun

    2014-07-25

    For realizing next-generation solid-state lighting devices, performance breakthroughs must be accomplished for nitride-based light-emitting diodes (LEDs). Highly transparent conductive electrodes (TCEs) may be key to achieving this goal, as they provide uniform current injection and distribution across a large device area, eventually increasing the light output power. However, the trade-off between electrical conductivity and optical transmittance of LEDs must be addressed. Herein, we introduce a novel strategy based on TCEs fabricated using wide-bandgap (WB) materials such as SiNx, incorporated beneath the n-type electrode of vertical-type LEDs, and show the feasibility of this strategy. We employ a novel electrical breakdown (EBD) technique to form conductive filaments (or current paths) between a TCE and n-GaN (GaN: gallium nitride). By employing the EBD process, we obtain both ohmic behavior for SiNx TCE/n-GaN and a current spreading effect across n-GaN. These results demonstrate the tremendous potential of WB-TCEs for use in high-performance optoelectronic devices.

  18. Sieve analysis of breakthrough HIV-1 sequences in HVTN 505 identifies vaccine pressure targeting the CD4 binding site of Env-gp120

    Science.gov (United States)

    Edlefsen, Paul T.; Sanders-Buell, Eric; Hall, Breana; Magaret, Craig A.; Fiore-Gartland, Andrew J.; Juraska, Michal; Carpp, Lindsay N.; Karuna, Shelly T.; Bose, Meera; LePore, Steven; Miller, Shana; O'Sullivan, Annemarie; Poltavee, Kultida; Bai, Hongjun; Dommaraju, Kalpana; Zhao, Hong; Wong, Kim; Chen, Lennie; Ahmed, Hasan; Goodman, Derrick; Tay, Matthew Z.; Gottardo, Raphael; Koup, Richard A.; Bailer, Robert; Mascola, John R.; Graham, Barney S.; Roederer, Mario; O’Connell, Robert J.; Michael, Nelson L.; Robb, Merlin L.; Adams, Elizabeth; D’Souza, Patricia; Kublin, James; Corey, Lawrence; Geraghty, Daniel E.; Frahm, Nicole; Tomaras, Georgia D.; McElrath, M. Juliana; Frenkel, Lisa; Styrchak, Sheila; Tovanabutra, Sodsai; Sobieszczyk, Magdalena E.; Hammer, Scott M.; Kim, Jerome H.; Mullins, James I.; Gilbert, Peter B.

    2017-01-01

    Although the HVTN 505 DNA/recombinant adenovirus type 5 vector HIV-1 vaccine trial showed no overall efficacy, analysis of breakthrough HIV-1 sequences in participants can help determine whether vaccine-induced immune responses impacted viruses that caused infection. We analyzed 480 HIV-1 genomes sampled from 27 vaccine and 20 placebo recipients and found that intra-host HIV-1 diversity was significantly lower in vaccine recipients (P ≤ 0.04, Q-values ≤ 0.09) in Gag, Pol, Vif and envelope glycoprotein gp120 (Env-gp120). Furthermore, Env-gp120 sequences from vaccine recipients were significantly more distant from the subtype B vaccine insert than sequences from placebo recipients (P = 0.01, Q-value = 0.12). These vaccine effects were associated with signatures mapping to CD4 binding site and CD4-induced monoclonal antibody footprints. These results suggest either (i) no vaccine efficacy to block acquisition of any viral genotype but vaccine-accelerated Env evolution post-acquisition; or (ii) vaccine efficacy against HIV-1s with Env sequences closest to the vaccine insert combined with increased acquisition due to other factors, potentially including the vaccine vector. PMID:29149197

  19. A Breakthrough Efficiency of 19.9% Obtained in Inverted Perovskite Solar Cells by Using an Efficient Trap State Passivator Cu(thiourea)I.

    Science.gov (United States)

    Ye, Senyun; Rao, Haixia; Zhao, Ziran; Zhang, Linjuan; Bao, Hongliang; Sun, Weihai; Li, Yunlong; Gu, Feidan; Wang, Jianqiang; Liu, Zhiwei; Bian, Zuqiang; Huang, Chunhui

    2017-06-07

    It is extremely significant to study the trap state passivation and minimize the trap states of perovskite to achieve high-performance perovskite solar cells (PSCs). Here, we have first revealed and demonstrated that a novel p-type conductor Cu(thiourea)I [Cu(Tu)I] incorporated in perovskite layer can effectively passivate the trap states of perovskite via interacting with the under-coordinated metal cations and halide anions at the perovskite crystal surface. The trap state energy level of perovskite can be shallowed from 0.35-0.45 eV to 0.25-0.35 eV. In addition, the incorporated Cu(Tu)I can participate in constructing the p-i bulk heterojunctions with perovskite, leading to an increase of the depletion width from 126 to 265 nm, which is advantageous for accelerating hole transport and reducing charge carrier recombination. For these two synergistic effects, Cu(Tu)I can play a much better role than that of the traditional p-type conductor CuI, probably due to its identical valence band maximum with that of perovskite, which enables to not only lower the trap state energy level to a greater extent but also eliminate the potential wells for holes at the p-i heterojunctions. After optimization, a breakthrough efficiency of 19.9% has been obtained in the inverted PSCs with Cu(Tu)I as the trap state passivator of perovskite.

  20. Double-peaked breakthrough curves as a consequence of solute transport through underground lakes: a case study of the Furfooz karst system, Belgium

    Science.gov (United States)

    Dewaide, Lorraine; Collon, Pauline; Poulain, Amaël; Rochez, Gaëtan; Hallet, Vincent

    2018-03-01

    The existence of double-peaked breakthrough curves (BTC), which are the result of the transport of a dye tracer through underground lakes, is reported. Investigations were undertaken on the Furfooz karst system in southern Belgium. In this system, the River Lesse sinks partially into a swallow hole. The water follows a solitary conduit leading to an underground lake that is directly connected to a second underground lake. Double-peaked BTCs were detected in the resurgent water, downstream of this second lake. The report first describes field data (tracer tests in various hydrologic conditions) which point towards the double peak being linked to a nonlinear process that originates within the lakes. Complementary investigations within the lakes show a complex behavior of the dye tracer related to a specific hydrodynamic feature that leads to the separation of the solute plume. A conceptual model of the solute transport within the lakes is proposed. This model emphasizes the physical effect of the lakes on the dye flow-through process.

  1. Sieve analysis of breakthrough HIV-1 sequences in HVTN 505 identifies vaccine pressure targeting the CD4 binding site of Env-gp120.

    Science.gov (United States)

    deCamp, Allan C; Rolland, Morgane; Edlefsen, Paul T; Sanders-Buell, Eric; Hall, Breana; Magaret, Craig A; Fiore-Gartland, Andrew J; Juraska, Michal; Carpp, Lindsay N; Karuna, Shelly T; Bose, Meera; LePore, Steven; Miller, Shana; O'Sullivan, Annemarie; Poltavee, Kultida; Bai, Hongjun; Dommaraju, Kalpana; Zhao, Hong; Wong, Kim; Chen, Lennie; Ahmed, Hasan; Goodman, Derrick; Tay, Matthew Z; Gottardo, Raphael; Koup, Richard A; Bailer, Robert; Mascola, John R; Graham, Barney S; Roederer, Mario; O'Connell, Robert J; Michael, Nelson L; Robb, Merlin L; Adams, Elizabeth; D'Souza, Patricia; Kublin, James; Corey, Lawrence; Geraghty, Daniel E; Frahm, Nicole; Tomaras, Georgia D; McElrath, M Juliana; Frenkel, Lisa; Styrchak, Sheila; Tovanabutra, Sodsai; Sobieszczyk, Magdalena E; Hammer, Scott M; Kim, Jerome H; Mullins, James I; Gilbert, Peter B

    2017-01-01

    Although the HVTN 505 DNA/recombinant adenovirus type 5 vector HIV-1 vaccine trial showed no overall efficacy, analysis of breakthrough HIV-1 sequences in participants can help determine whether vaccine-induced immune responses impacted viruses that caused infection. We analyzed 480 HIV-1 genomes sampled from 27 vaccine and 20 placebo recipients and found that intra-host HIV-1 diversity was significantly lower in vaccine recipients (P ≤ 0.04, Q-values ≤ 0.09) in Gag, Pol, Vif and envelope glycoprotein gp120 (Env-gp120). Furthermore, Env-gp120 sequences from vaccine recipients were significantly more distant from the subtype B vaccine insert than sequences from placebo recipients (P = 0.01, Q-value = 0.12). These vaccine effects were associated with signatures mapping to CD4 binding site and CD4-induced monoclonal antibody footprints. These results suggest either (i) no vaccine efficacy to block acquisition of any viral genotype but vaccine-accelerated Env evolution post-acquisition; or (ii) vaccine efficacy against HIV-1s with Env sequences closest to the vaccine insert combined with increased acquisition due to other factors, potentially including the vaccine vector.

  2. Tanzania's healthcare breakthrough | IDRC - International ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2010-11-18

    Nov 18, 2010 ... ... recalls Hassan Mshinda, a former health researcher and now director general of the Tanzania Commission for Science and Technology. Since then, Tanzania has rolled out these health reforms nationwide. The result: dramatic improvements in health for children and adults throughout the entire country.

  3. Rapid learning: a breakthrough agenda.

    Science.gov (United States)

    Etheredge, Lynn M

    2014-07-01

    A "rapid-learning health system" was proposed in a 2007 thematic issue of Health Affairs. The system was envisioned as one that uses evidence-based medicine to quickly determine the best possible treatments for patients. It does so by drawing on electronic health records and the power of big data to access large volumes of information from a variety of sources at high speed. The foundation for a rapid-learning health system was laid during 2007-13 by workshops, policy papers, large public investments in databases and research programs, and developing learning systems. Challenges now include implementing a new clinical research system with several hundred million patients, modernizing clinical trials and registries, devising and funding research on national priorities, and analyzing genetic and other factors that influence diseases and responses to treatment. Next steps also should aim to improve comparative effectiveness research; build on investments in health information technology to standardize handling of genetic information and support information exchange through apps and software modules; and develop new tools, data, and information for clinical decision support. Further advances will require commitment, leadership, and public-private and global collaboration. Project HOPE—The People-to-People Health Foundation, Inc.

  4. Metafusion: A breakthrough in metallurgy

    Science.gov (United States)

    Joseph, Adrian A.

    1994-01-01

    The Metafuse Process is a patented development in the field of thin film coatings utilizing cold fusion which results in a true inter-dispersion of dissimilar materials along a gradual transition gradient through a boundary of several hundred atomic layers. The process is performed at ambient temperatures and pressures requiring relatively little energy and creating little or no heat. The process permits a remarkable range of material combinations and joining of materials which are normally incompatible. Initial applications include titanium carbide into and onto the copper resistance welding electrodes and tungsten carbide onto the cutting edges of tool steel blades. The process is achieved through application of an RF signal of low power and is based on the theory of vacancy fusion.

  5. Fentanyl Buccal Tablet: A New Breakthrough Pain Medication in Early Management of Severe Vaso-Occlusive Crisis in Sickle Cell Disease.

    Science.gov (United States)

    De Franceschi, Lucia; Mura, Paolo; Schweiger, Vittorio; Vencato, Elisa; Quaglia, Francesca Maria; Delmonte, Letizia; Evangelista, Maurizio; Polati, Enrico; Olivieri, Oliviero; Finco, Gabriele

    2016-07-01

    Sickle cell disease (SCD) is a worldwide distributed hereditary red cell disorder. The principal clinical manifestations of SCD are the chronic hemolytic anemia and the acute vaso-occlusive crisis (VOCs), which are mainly characterized by ischemic/reperfusion tissue injury. Pain is the main symptom of VOCs, and its management is still a challenge for hematologists, requiring a multidisciplinary approach. We carried out a crossover study on adult SCD patients, who received two different types of multimodal analgesia during two separate severe VOCs with time interval between VOCs of at least 6 months. The first VOC episode was treated with ketorolac (0.86 mg/kg/day) and tramadol (7.2 mg/kg/day) (TK treatment). In the second VOC episode, fentanyl buccal tablet (FBT; 100 μg) was introduced in a single dose after three hours from the beginning of TK analgesia (TKF treatment). We focused on the first 24 hours of acute pain management. The primary efficacy measure was the time-weighted-sum of pain intensity differences (SPID24). The secondary efficacy measures included the pain intensity difference (PID), the total pain relief (TOTPAR), and the time-wighted sum of anxiety (SAID24). SPID24 was significantly higher in TKF than in TK treatment. All the secondary measures were significantly ameliorated in TKF compared to TK treatment, without major opioid side effects. Patients satisfaction was higher with TKF treatment than with TK one. We propose that VOCs might require breakthrough pain drug strategy as vaso-occlusive phenomena and enhanced vasoconstriction promoting acute ischemic pain component exacerbate the continuous pain of VOCs. FBT might be a powerful and feasible tool in early management of acute pain during VOCs in emergency departments. © 2015 World Institute of Pain.

  6. A randomized, placebo-controlled study of a new sublingual formulation of fentanyl citrate (fentanyl ethypharm) for breakthrough pain in opioid-treated patients with cancer.

    Science.gov (United States)

    Novotna, Stanislava; Valentova, Klara; Fricova, Jitka; Richterova, Eva; Harabisova, Sarka; Bullier, Françoise; Trinquet, Françoise

    2014-03-01

    Oromucosal fentanyl is currently used for the treatment of breakthrough pain (BTP) in opioid-treated cancer patients. Ethypharm developed a sublingual formulation of fentanyl suprabioavailable to oral transmucosal fentanyl citrate with a higher early systemic exposure and a shorter Tmax. This study evaluated the efficacy and safety profile of fentanyl Ethypharm (FE) in relieving BTP in opioid-treated cancer patients. Opioid-treated adult cancer patients, experiencing 1 to 4 episodes of BTP per day, were included in the study. After an open-label titration period to identify an optimal dose that would provide adequate pain relief for 2 consecutive episodes of BTP with an acceptable level of adverse events, patients were randomly assigned to a double-blind, placebo-controlled, crossover period with 1 of 13 prespecified sequences of 9 tablets (6 tablets of FE of the dose identified during the open-label titration and 3 placebo). Pain intensity and pain relief were recorded at 3, 6, 10, 15, 30, and 60 minutes after study drug administration. Adverse events were recorded. The primary end point was the sum of pain intensity differences (SPID) at 30 minutes. The distribution of optimal dosages of FE was as follows: 133 µg, 35.9%; 267 µg, 30.8%; 400 µg, 14.1%; 533 µg, 12.8%; and 800 μg, 6.4%. In the modified intention-to-treat population (n = 73), FE significantly improved mean (SE) SPID compared with placebo at 30 minutes (75.0 [49.8] vs 52.5 [52.8]; P pain intensity difference, and pain relief compared with placebo from 6 to 60 minutes' postadministration. Patients with BTP who received placebo required the use of rescue medication more often than those treated with FE (38.4% vs 17.5%; P pain scores (>33% and >50% reductions) was also reported for BTP treated with FE. Pain scores for patients with BTP with a neuropathic component (13 patients) were lower with FE than for those receiving placebo, but the difference was not significant. AEs were of mild or moderate

  7. Randomized, proof-of-concept trial of low dose naltrexone for patients with breakthrough symptoms of major depressive disorder on antidepressants.

    Science.gov (United States)

    Mischoulon, David; Hylek, Lindsay; Yeung, Albert S; Clain, Alisabet J; Baer, Lee; Cusin, Cristina; Ionescu, Dawn Flosnik; Alpert, Jonathan E; Soskin, David P; Fava, Maurizio

    2017-01-15

    Given the proposed dopaminergic mechanism of low-dose naltrexone (LDN), we examined its efficacy as augmentation for depressive breakthrough on pro-dopaminergic antidepressant regimens. 12 adults (67% female, mean age = 45±12) with recurrent DSM-IV major depressive disorder (MDD) on dopaminergic antidepressant regimens (stimulants, dopamine agonists, bupropion [≥300mg/day], aripiprazole [≤2.5mg/day], or sertraline [≥150mg/day]) were randomized to naltrexone 1mg b.i.d. (n=6) or placebo (n=6) augmentation for 3 weeks. All subjects completed the trial. Hamilton Depression Rating Scale (HAM-D-17) scores (primary outcome measure) decreased from 21.2±2.0 to 11.7±7.7 for LDN, from 23.7±2.3 to 17.8±5.9 for placebo (Cohen's d=0.62; p=0.3 between treatment groups). HAM-D-28 scores decreased from 26.2±4.0 to 12.0±9.8 for LDN, from 26.3±2.6 to 19.8±6.6 for placebo (d=1.15; p=0.097). Montgomery-Asberg Depression Rating Scale (MADRS-10 item) scores decreased from 30.4±4.9 to 12.2±8.4 for LDN, from 30.7±4.3 to 22.8±8.5) for placebo (d=1.45; p=0.035). MADRS-15 item scores decreased from 36.6±6.2 to 13.2±8.8 for LDN, from 36.7±4.2 to 26.0±10.0 for placebo (d=1.49; p=0.035). Clinical Global Improvement Scale-Severity (CGI-S) scores decreased from 4.3±0.5 to 3.0±1.1 for LDN, from 4.3±0.5 to 4.0±0.6 for placebo (d=1.22; p=0.064). Small study; restrictions on allowed antidepressants. LDN augmentation showed some benefit for MDD relapse on dopaminergic agents. Confirmation in larger studies is needed. Copyright © 2016 Elsevier B.V. All rights reserved.

  8. Analysis of the two accelerator concepts foreseen for the neutral beam injector of the International Thermonuclear Experimental Reactor

    Directory of Open Access Journals (Sweden)

    G. Fubiani

    2009-05-01

    Full Text Available Typical high-energy negative ion electrostatic accelerators such as the ones designed for fusion applications produce a significant amount of secondary particles. These particles may originate from coextracted electrons, which flow from the ion source, impacting the accelerator grids or as by-products of collisions between accelerated negative ions and the residual background gas, in the accelerator. Secondary emission particles may carry a non-negligible power and consequently must be precisely studied. The electrostatic-accelerator-Monte-Carlo-simulation code (EAMCC [G. Fubiani et al., Phys. Rev. ST Accel. Beams 11, 014202 (2008PRABFM1098-440210.1103/PhysRevSTAB.11.014202] was developed in order to provide a three-dimensional characterization of power and current deposition on all parts of the accelerator. The code includes all the relevant physics associated with secondary emission processes and consequently may be used as a tool for design improvement. In this paper, the two accelerator designs considered for the International Thermonuclear Experimental Reactor, that is, the multiaperture-multigrid and the single gap single aperture (SINGAP designs, are discussed and their predicted performances compared. Simulations have been compared with measurements on prototype accelerators of the SINGAP type. Reasonable agreement between EAMCC calculations and measurements of backstreaming ions and transmitted electrons was found.

  9. Evolution of the feedback from experience on degradations of French nuclear power plants condensers and foreseen solutions

    Energy Technology Data Exchange (ETDEWEB)

    Mayos, M.; Chanel, F.; Copin, E.; Carlier, L. [EDF/DIN/CEIDRE, Saint-Denis (France); Coquio, N.; Garbay, E. [EDF/DIN/CEIDRE, Avoine (France); Bastian, C. [EDF/DPN/UNIE, Saint-Denis (France)

    2011-07-01

    The materials constituting the condenser tubes of French nuclear power plants display a great diversity and are subject to different degradations, known from the operational feedback from experience. Copper alloys (mainly brass), which were bound to disappear in renovated condensers, are still significantly present, due to their unique bacteriostatic ability. Brass tubes lifetime is still governed in general by steady abrasion, as evaluated by eddy current nondestructive testing. However, an atypical NDE (non-destructive evaluation) behavior has led to spot a new damage: localized under-deposit pitting corrosion on the raw water side, caused by the particular quality of water chemistry and heavy scaling of the tube surface. This damage is likely to overcome steady abrasion for tube life prediction. Prevention includes a tighter look at NDE indications and improved descaling solutions (chemical or mechanical). Other specific damages have been reported from operation feedback: the main one was accidental stress corrosion cracking, which has occurred on some recently renovated brass condenser tube bundles. Thanks to a metallurgical and mechanical study, its cause was found in the manufacturing process. This experience has resulted in tightened specifications for brass tubes manufacturing. Stainless steel and titanium still appear more damage-resistant and represent a safe solution when no microorganism issue is present. The degradation feedback, confirmed by NDE inspections, is very low in French power plants. However, titanium hydriding still represents an issue when cathodic protection is present. Furthermore, some other damages have been reported on titanium, like isolated steam erosion. Vibration fatigue damage has been observed on stainless steel tubes, but it is more in relationship with the condenser design than with the material itself. (authors)

  10. Economical and geopolitical aspects bond to the foreseen development of the natural gas in an open market

    International Nuclear Information System (INIS)

    2001-12-01

    For the first time in 2000, the part of natural gas is equal to those of coal in the world energy accounting. The economy and the geo-policy of this developing energy is analyzed, showing an economy dominated by the transport costs, the specificity of the european sector and the opening market since 1980. The european market opening incertitudes and opportunities are detailed. In conclusion the Gaz De France role in the european energy pole and the new regulations are discussed. (A.L.B.)

  11. Comparison of T91 and P91 steels foreseen for high temperature reactor using positron annihilation techniques

    Energy Technology Data Exchange (ETDEWEB)

    Veternikova, J.; Slugen, V.; Degmova, J.; Hinca, R.; Sojak, S. [Department of Nuclear Physics and Technology, FEI, Slovak University of Technology, Ilkovicova 3, 81219 Bratislava (Slovakia); Kilpelaeinen, S.; Tuomisto, F. [Department of Applied Physics, Aalto University, P.O.Box 1100, FI-02150, Aalto (Finland); Raeisaenen, J. [Department of Physics, Aalto University, P.O.Box 43, FI-00014, Aalto (Finland); Krsjak, V. [Institute for Energy, Joint Research Centre of European Commission, P.O.Box 2, 1755ZG Petten (Netherlands)

    2010-07-01

    A commercial application of new nuclear reactors designed within the frame of the international research programme GEN IV (High Temperature Reactor (HTR) included) is delayed by a development of construction materials. The emphasis is put on a reactor pressure vessel (RPV), which should resist higher radiation and temperature loading than recent reactors. This paper deals with two similar kinds of 9 % chromium ferritic/martensitic steels T91 and P91, which are ranked among the most promising candidate materials for construction of the HTR RPV in the light of recent research. Our study was focused on radiation resistance of these two steels using two different positron annihilation techniques (positron lifetime and Doppler broadening measurements). Radiation damage was simulated by helium ions implantation performed to a depth up to 1 {mu}m with applying of a linear accelerator. Both experimental techniques proved differences between T91 and P91 microstructure. Results showed higher radiation resistance for steel T91 than for P91. (authors)

  12. Effect of Cleaning the Solvent of NaOCl and Second Column of Alumina Addition on Yield and Release 99Mo (Mo Breakthrough) from 99Mo/99mTc Generator Based on PZC (Poly Zirconium Compound)

    International Nuclear Information System (INIS)

    Adang HG; Mutalib, A.; Hotman L; Awaludin, R.; Sulaeman

    2010-01-01

    Alumina is one of main material in 99 Mo/ 99m Tc generator as molybdenum adsorbent. Limitation of alumina adsorption capacity to molybdenum cause this material cannot be applied as column filler for generator 99 Mo/ 99m Tc using 99 Mo from neutron activation. The invention of new compound as molybdenum adsorbent, PZC (poly zirconium compound), have been shown that the materials is a promising adsorbent for generator 99 Mo/ 99m Tc from (n,γ) irradiated molybdenum. The research of generator 99 Mo/ 99m Tc by using adsorbent PZC is form of cooperation between PPR-BATAN Serpong with JAERI and Kaken Co. Japan. In this research, the effects of addition of NaOCl solution to elution yield and 99 Mo breakthrough have been done. The other parameter used in this experiment to minimized 99 Mo breakthrough in 99m Tc is addition of second column alumina placed after 99 Mo-PZC column. Adsorption capacity of PZC material to molybdenum determined by heating 99 Mo solution with PZC up to 3 hours and the result indicated 1 gram PZC adsorbed 80-95 % 99 Mo from the reacted 268 mg molybdenum. Yield percentage of the 99 Mo/ 99m Tc generator without rinsed by saline solution obtained less than 50 % and the yield increased more than 80 % after the column washing by using NaOCl 0.5 % or 1 % solutions. Usage of both NaOCl 0.5 % solution and alumina column as second column can prevent of yield stability and minimized 99 Mo breakthrough at 99m Tc effluent. (author)

  13. A Comparison of Change in the 0–10 Numeric Rating Scale to a Pain Relief Scale and Global Medication Performance Scale in a Short-term Clinical Trial of Breakthrough Pain Intensity

    Science.gov (United States)

    Farrar, John T.; Polomano, Rosemary C.; Berlin, Jesse A.; Strom, Brian L.

    2010-01-01

    Background Pain intensity is commonly reported using a 0–10 numeric rating scale in breakthrough pain clinical trials. Analysis of the change on the Pain Intensity Numerical Rating Scale as a proportion as most consistently correlated with clinically important differences reported on the Patient Global Impression of Change. The analysis of data using a different global outcome measures and the pain relief scale will extend our understanding of these measures. Use of the pain relief scale is also explored in this study Methods Data came from the open titration phase of a multiple crossover, randomized, double-blind clinical trial comparing oral transmucosal fentanyl citrate to immediate-release oral morphine sulfate for treatment of cancer-related breakthrough pain. Raw and percent changes in the pain intensity scores on 1,307 from 134 oral transmucosal fentanyl citrate-naive patients were compared to the clinically relevant secondary outcomes of the pain relief verbal response scale and the global medication performance. The changes in raw and percent change were assessed over time and compared to the ordinal pain relief verbal response scale and global medication performance scales. Results The p-value of the interaction between the raw pain intensity difference was significant but not for the percent pain intensity difference score over 4 15 minute time periods (p = 0.034 and p = 0.26 respectively), in comparison with the ordinal pain relief verbal response scale (p = 0.0048 and p = 0.36 respectively), and global medication performance categories (p = 0.048 and p = 0.45 respectively). Conclusion The change in pain intensity in breakthrough pain was more consistent over time and when compared to both the pain relief verbal response scale and global medication performance scale when the percent change is used rather than raw pain intensity difference. PMID:20463579

  14. Measurement of breakthrough volumes of volatile chemical warfare agents on a poly(2,6-diphenylphenylene oxide)-based adsorbent and application to thermal desorption-gas chromatography/mass spectrometric analysis.

    Science.gov (United States)

    Kanamori-Kataoka, Mieko; Seto, Yasuo

    2015-09-04

    To establish adequate on-site solvent trapping of volatile chemical warfare agents (CWAs) from air samples, we measured the breakthrough volumes of CWAs on three adsorbent resins by an elution technique using direct electron ionization mass spectrometry. The trapping characteristics of Tenax(®) TA were better than those of Tenax(®) GR and Carboxen(®) 1016. The latter two adsorbents showed non-reproducible breakthrough behavior and low VX recovery. The specific breakthrough values were more than 44 (sarin) L/g Tenax(®) TA resin at 20°C. Logarithmic values of specific breakthrough volume for four nerve agents (sarin, soman, tabun, and VX) showed a nearly linear correlation with the reciprocals of their boiling points, but the data point of sulfur mustard deviated from this linear curve. Next, we developed a method to determine volatile CWAs in ambient air by thermal desorption-gas chromatography (TD-GC/MS). CWA solutions that were spiked into the Tenax TA(®) adsorbent tubes were analyzed by a two-stage TD-GC/MS using a Tenax(®) TA-packed cold trap tube. Linear calibration curves for CWAs retained in the resin tubes were obtained in the range between 0.2pL and 100pL for sarin, soman, tabun, cyclohexylsarin, and sulfur mustard; and between 2pL and 100pL for VX and Russian VX. We also examined the stability of CWAs in Tenax(®) TA tubes purged with either dry or 50% relative humidity air under storage conditions at room temperature or 4°C. More than 80% sarin, soman, tabun, cyclohexylsarin, and sulfur mustard were recovered from the tubes within 2 weeks. In contrast, the recoveries of VX and Russian VX drastically reduced with storage time at room temperature, resulting in a drop to 10-30% after 2 weeks. Moreover, we examined the trapping efficiency of Tenax TA(®) adsorbent tubes for vaporized CWA samples (100mL) prepared in a 500mL gas sampling cylinder. In the concentration range of 0.2-2.5mg/m(3), >50% of sarin, soman, tabun, cyclohexylsarin, and HD were

  15. Breakthrough curves of non-trace H{sub 2}–D{sub 2} mixture replacement adsorption with SZ-13X packed column at 77.4 K

    Energy Technology Data Exchange (ETDEWEB)

    Kotoh, Kenji, E-mail: kotoh@nucl.kyushu-u.ac.jp [Faculty of Engineering, Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395 (Japan); Graduate School of Engineering, Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395 (Japan); Moriyama, Sho-taro; Takashima, Shoji [Graduate School of Engineering, Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395 (Japan); Takahashi, Katsuhito [Faculty of Engineering, Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395 (Japan)

    2013-10-15

    Highlights: • Breakthrough curves of non-trace H{sub 2}–D{sub 2} replacement adsorption on zeolite are shown. • Mass balances are modeled for describing non-trace H{sub 2}–D{sub 2} binary adsorption in a packed-bed. • Experimental and analytical breakthrough curves exhibit concentration dependency. • The mass transfer rate in replacement adsorption is controlled by desorption process. • Isotope effect on mass transfer rates in H{sub 2}–D{sub 2} replacement adsorption is clarified. -- Abstract: Breakthrough curves of non-trace H{sub 2}–D{sub 2} mixture replacement adsorption with a synthetic zeolite SZ-13X packed column at a cryogenic temperature of 77.4 K were measured at several concentrations of D{sub 2} in H{sub 2}–D{sub 2} mixtures and at the same ones of H{sub 2} in these mixtures, and were analyzed by the curve-fitting with the curves estimated from a model of non-trace two-component mass-flow balances of H{sub 2} and D{sub 2} in the packed column. This dynamic model of adsorption takes in account the characteristics of the separation factor of D{sub 2}/H{sub 2} in adsorption equilibrium depending on the composition in adsorbed phase. Experimental curves show a slight but certain variation with increase in the concentration of a subjective component in the isotope mixtures. It is demonstrated here that these behaviors can be approximated closely by the numerical curves. The curve-fitting analysis brings an interesting result that the overall mass-transfer coefficient of D{sub 2} replacing H{sub 2} adsorbed in advance is larger than that of H{sub 2} replacing D{sub 2} adsorbed. This difference can be interpreted by assuming that desorption of molecules adsorbed in advance is the rate-determining process of replacement adsorption.

  16. Rigidity of the far-right? Motivated social cognition in a nationally representative sample of Hungarians on the eve of the far-right breakthrough in the 2010 elections.

    Science.gov (United States)

    Lönnqvist, Jan-Erik; Szabó, Zsolt Péter; Kelemen, Laszlo

    2018-04-26

    We investigated the "rigidity of the right" hypothesis in the context of the far-right breakthrough in the 2010 Hungarian parliamentary elections. This hypothesis suggests that psychological characteristics having to do with need for security and certainty attract people to a broad-based right-wing ideology. A nationally representative sample (N = 1000) in terms of age, gender and place of residence was collected by means of the random walking method and face-to-face interviews. Voters of JOBBIK (n = 124), the radically nationalist conservative far-right party, scored lower on System Justifying Belief, Belief in a Just World (Global) and higher on Need for Cognition than other voters. Our results contradict the "rigidity of the right" hypothesis: JOBBIK voters scored, on many measures, opposite to what the hypothesis would predict. © 2018 International Union of Psychological Science.

  17. CD8 and CD4 epitope predictions in RV144: no strong evidence of a T-cell driven sieve effect in HIV-1 breakthrough sequences from trial participants.

    Science.gov (United States)

    Dommaraju, Kalpana; Kijak, Gustavo; Carlson, Jonathan M; Larsen, Brendan B; Tovanabutra, Sodsai; Geraghty, Dan E; Deng, Wenjie; Maust, Brandon S; Edlefsen, Paul T; Sanders-Buell, Eric; Ratto-Kim, Silvia; deSouza, Mark S; Rerks-Ngarm, Supachai; Nitayaphan, Sorachai; Pitisuttihum, Punnee; Kaewkungwal, Jaranit; O'Connell, Robert J; Robb, Merlin L; Michael, Nelson L; Mullins, James I; Kim, Jerome H; Rolland, Morgane

    2014-01-01

    The modest protection afforded by the RV144 vaccine offers an opportunity to evaluate its mechanisms of protection. Differences between HIV-1 breakthrough viruses from vaccine and placebo recipients can be attributed to the RV144 vaccine as this was a randomized and double-blinded trial. CD8 and CD4 T cell epitope repertoires were predicted in HIV-1 proteomes from 110 RV144 participants. Predicted Gag epitope repertoires were smaller in vaccine than in placebo recipients (p = 0.019). After comparing participant-derived epitopes to corresponding epitopes in the RV144 vaccine, the proportion of epitopes that could be matched differed depending on the protein conservation (only 36% of epitopes in Env vs 84-91% in Gag/Pol/Nef for CD8 predicted epitopes) or on vaccine insert subtype (55% against CRF01_AE vs 7% against subtype B). To compare predicted epitopes to the vaccine, we analyzed predicted binding affinity and evolutionary distance measurements. Comparisons between the vaccine and placebo arm did not reveal robust evidence for a T cell driven sieve effect, although some differences were noted in Env-V2 (0.022≤p-value≤0.231). The paucity of CD8 T cell responses identified following RV144 vaccination, with no evidence for V2 specificity, considered together both with the association of decreased infection risk in RV 144 participants with V-specific antibody responses and a V2 sieve effect, lead us to hypothesize that this sieve effect was not T cell specific. Overall, our results did not reveal a strong differential impact of vaccine-induced T cell responses among breakthrough infections in RV144 participants.

  18. [Inventive activity of the Departments of Protein Structure and Function, and Molecular Immunology of the Palladin Institute of Biochemistry of NAS of Ukraine. Part II. National breakthrough in the study and diagnostics of human hemostasis system].

    Science.gov (United States)

    Lugovska, N E

    2016-01-01

    The scientists of Protein Structure and Function, and Molecular Immunology Departments of the Palladin Institute of Biochemistry (NAS of Ukraine) under the supervision of member of NASU and NAMSU, prof. S. V. Komisarenko and corresponding member of NASU prof. E. V. Lugovskoy have made the real breakthrough in the field of research of the mechanisms of fibrin polymerization and formation of fibrin framework of thrombi. The immunodiagnostic test-systems for the evaluation of the risk of thrombus formation were developed for the first time. Researches have obtained the monoclonal antibodies to fibrinogen, fibrin, D-dimer and their fragments. These monoclonal antibodies were used as molecular probes for the localization of newly detected fibrin polymerization sites. Obtained antibodies with high affinity interact with fibrinogen, D-dimer and soluble fibrin – main markers of the risk of thrombus formation. They were used for the development of the immunodiagnostic test-systems to quantify these markers in human blood plasma for the evaluation of the state of haemostasis system, detection of prethrombotic states, disseminated intravascular coagulation, detection of thrombosis and monitoring of antithrombotic and fibrinolytic therapy. The successful trial of developed test-systems was carried out in clinics of Ukraine, and the State registration was obtained for the implementation of them into the clinical practice. Presented works were awarded State prize of Ukraine in Science and technology.

  19. Breakthrough in Understanding Radiation Growth of Zirconiu

    Energy Technology Data Exchange (ETDEWEB)

    Golubov, Stanislav I [ORNL; Barashev, Alexander V [ORNL; Stoller, Roger E [ORNL; Singh, Bachu [Riso National Laboratory, Roskilde, Denmark

    2014-01-01

    The efforts of many scientists for more than a half of a century have resulted in a substantial understanding of the response of Zr-based materials to irradiation. However, the models of radiation growth proposed to date have not played a decisive role in creating radiation-resistant materials and cannot predict strain rates at high irradiation doses. The main reason for this is the common assumption that, regardless of the incident particle mass and energy, the primary damage consists of single vacancies and self-interstitial atoms (SIAs), both diffusing three-dimensionally. Thus, the models ignore the distinguishing features of the damage production in displacement cascades during fastparticle, e.g., neutron, irradiation; namely, the intra-cascade clustering of vacancies and SIAs and one-dimensional diffusion of SIA clusters. Over the last twenty years or so, the production bias model (PBM) has been developed, which accounts for these features and explains many observations in cubic crystals. The cascades in hcp crystals are found to be similar to those in cubic crystals; hence one can expect that the PBM will provide a realistic framework for the hcp metals as well. It is shown in this paper that it reproduces all the growth stages observed in annealed materials under neutron irradiation, such as the high strain rate at low, strain saturation at intermediate, and breakaway growth at relatively high doses. It accounts for the striking observations of negative strains in prismatic directions and co-existence of vacancy- and interstitial-type prismatic loops, which have never been explained before. It reveals the role of cold work in the radiation growth behavior and the reasons for the alignment of basal vacancy-type loops along the basal planes. The critical parameters determining the high-dose behavior are revealed and the maximum growth rate is estimated.

  20. Breakthrough Science Enabled by Smallsat Optical Communication

    Science.gov (United States)

    Gorjian, V.

    2017-12-01

    The recent NRC panel on "Achieving Science with Cubesats" found that "CubeSats have already proven themselves to be an important scientific tool. CubeSats can produce high-value science, as demonstrated by peer-reviewed publications that address decadal survey science goals." While some science is purely related to the size of the collecting aperture, there are plentiful examples of new and exciting experiments that can be achieved using the relatively inexpensive Cubesat platforms. We will present various potential science applications that can benefit from higher bandwidth communication. For example, on or near Earth orbit, Cubesats could provide hyperspectral imaging, gravity field mapping, atmospheric probing, and terrain mapping. These can be achieved either as large constellations of Cubesats or a few Cubesats that provide multi-point observations. Away from the Earth (up to 1AU) astrophysical variability studies, detections of solar particles between the Earth and Venus, mapping near earth objects, and high-speed videos of the Sun will also be enabled by high bandwidth communications.

  1. Simulation of experimental breakthrough curves using multiprocess ...

    Indian Academy of Sciences (India)

    -process non-equilibrium model provides best fit of observed data through stratified porous media. Also, the exponential distance dependent dispersivity is more suitable for large distances and at small distances, linear or constant dispersivity ...

  2. Applied Creativity: The Creative Marketing Breakthrough Model

    Science.gov (United States)

    Titus, Philip A.

    2007-01-01

    Despite the increasing importance of personal creativity in today's business environment, few conceptual creativity frameworks have been presented in the marketing education literature. The purpose of this article is to advance the integration of creativity instruction into marketing classrooms by presenting an applied creative marketing…

  3. Simulation of experimental breakthrough curves using multiprocess ...

    Indian Academy of Sciences (India)

    Batch sorption studies were also performed ... the complexity of transport, some assumptions are employed. The hypothesis that has been used widely in solute transport to reduce its complexity is that the aquifer proper- ties are .... The experiments performed by Sudicky et al (1985) and Starr et al (1985) on stratified porous.

  4. Developing technology pushed breakthroughs: an empirical study

    Directory of Open Access Journals (Sweden)

    Jari Sarja

    2017-12-01

    Full Text Available Developing a technology push product that brings real novelty to the market is difficult, risky and costly. This case study analyzes success factors defined by the literature. True industrial cases, representing Finnish ICT firms in their early phase after a successful market entry, were researched for the success factor analysis. The whole set of the previously introduced success factors were variably supported, and three new factors arose. Because the technology pushed development processes are risky with high failure rates, the validated success factors are valuable knowledge for the developments intensive firm’s management.

  5. From "breakthrough" to "episodic" Cancer Pain?

    DEFF Research Database (Denmark)

    Løhre, Erik Torbjørn; Klepstad, Pål; Bennett, Michael I

    2016-01-01

    of consensus on BTCP classification were refined into 20 statements. The participants rated their degree of agreement with the statements on a numeric rating scale (0-10). Consensus was defined as a median numeric rating scale score of ≥7 and an interquartile range of ≤3. Results Fifty-two authors had...

  6. Channelrhodopsins provide a breakthrough insight into strategies ...

    Indian Academy of Sciences (India)

    Photoreceptor cells are the only retinal neurons that can absorb photons. Their degeneration due to some diseases or injuries leads to blindness. Retinal prostheses electrically stimulating surviving retinal cells and evoking a pseudo light sensation have been investigated over the past decade for restoring vision. Currently ...

  7. Olefin metathesis : tapping into breakthrough chemical technology

    Energy Technology Data Exchange (ETDEWEB)

    Granson, E.

    2010-06-15

    Olefin metathesis is a catalyst technology where 2 double bond-containing molecules or olefins are split in order to exchange atoms and result in the formation of 2 new molecules or substances. Earlier researchers used a variety of materials to convert propylene into a mixture of butenes and ethylenes. A method developed by Shell researchers produces linear olefins used as detergent feedstocks. In 1971, scientists used a metal-carbene catalyst to react with the olefins to produce both a new olefin and a new metal carbene in order to perpetuate the process. In 2002, a new metathesis technology was developed using renewable natural oils as a feedstock. The catalyst is introduced as a solid into the oil, and then agitated by stirring. The modified oil is then reacted with hydrogen to remove the double bonds and filter off the catalyst. The method is offered on a contract basis by Elevance Renewable Sciences in a variety of application. The process was designed to take place at lower temperatures with the release of fewer greenhouse gases (GHGs). New metathesis technologies are also being developed to reduce the molecular weight of polymers in order to reduce viscosity and increase flow. 3 figs.

  8. Breakthrough to Optimized Pulsed Plasma Thrusters

    National Research Council Canada - National Science Library

    York, Thomas

    2004-01-01

    ...) by using propellants other than the traditionally used Teflon. A theoretical and experimental effort was initiated at The Ohio State University to investigate the use of alternative propellants for PPT...

  9. Millennium breakthrough : North goes west / Ivar Leimus

    Index Scriptorium Estoniae

    Leimus, Ivar, 1953-

    2009-01-01

    Kaubandusest Kasaari ja Volga-Bulgari riigi keskustes. Saksa idamisjonist ja Põhjala misjonist. Ebaõnnestunud misjonist Kiievi-Venes. Inglise misjonist Rootsis ja Taanis. Seosest misjonitegevuse ja mündiekspordi lähtealade vahel. Euroopa orientatsioonile üleminekust paar sajandit enne Eesti vägivaldset hõivamist

  10. Breakthrough cancer pain – still a challenge

    OpenAIRE

    Mañas A; Galvez R; Cruz JJ; Casas A; Escobar Y; Anton A; López R; Juliá J; Margarit C; Zaragozá F

    2012-01-01

    Cesar Margarit,1 Joaquim Juliá,2 Rafael López,3 Antonio Anton,4 Yolanda Escobar,5 Ana Casas,6 Juan Jesús Cruz,7 Rafael Galvez,8 Ana Mañas,9 Francisco Zaragozá101Pain Unit, Alicante University General Hospital, Alicante, Spain; 2Department of Integral Support-Palliative Care, Catalan Institute of Oncology (ICO), Germans Trias i Pujol University Hospital, Badalona, Spain; 3Department of Clinical Oncology, University Hospital Complex, Santia...

  11. Breakthrough ideas leading to new futures: prologue.

    Science.gov (United States)

    Willy, Christian

    2013-12-01

    Since commercialisation almost 20 years ago, negative pressure wound therapy (NPWT; V.A.C. Therapy; KCI USA, Inc., San Antonio, TX) has been used to treat a wide variety of wound types and continues to evolve as research expands understanding of the mechanisms of action that enable this adjunct therapy to facilitate wound closure. In 2010, the educational International Surgical Wound Forum (ISWF) was created to facilitate discussion among experts from all over the world regarding modern wound treatment challenges and techniques. This is the first of two supplements, which are based on the 2012 and 2013 ISWF presentations and demonstrate the evolution of the role of NPWT in wound care. This first supplement provides an overview of current health care challenges and clinical practice and reviews evidence and experience using NPWT with instillation, which combines NPWT with computer-controlled delivery and removal of topical solutions and suspensions to cleanse and/or treat wounds. © 2013 The Author. International Wound Journal © 2013 John Wiley & Sons Ltd and Medicalhelplines.com Inc.

  12. BREAKTHROUGH OF THE YEAR Areas to Watch

    CERN Document Server

    2007-01-01

    A smashing start? Next summer, physicists will start up the Large Hadron Collider (LHC) at the European particle physics lab, CERN, outside Geneva, Switzerland. Researchers hope this highest-energy collider will reveal plenty of new particles and puzzles, but the immediate question is how fast will it come on?

  13. Channelrhodopsins provide a breakthrough insight into strategies ...

    Indian Academy of Sciences (India)

    2009-12-31

    Dec 31, 2009 ... been under development worldwide and are being progres- sively used in clinical trials (Hayes et al. 2003 .... World 'channelrhodopsins' is gaining momentum. In the clinical field, expectations are rising ... Research from the Ministry of Education, Culture, Sports, Sci- ence and Technology of Japan (nos.

  14. Simulation of experimental breakthrough curves using multiprocess ...

    Indian Academy of Sciences (India)

    and chemical properties of the porous medium induce an imbalance in the transport of contami- nant. For reducing the complexity of transport, some assumptions are employed. The hypothesis that has been used widely in solute transport to reduce its complexity is that the aquifer proper- ties are invariant and local ...

  15. Immunotherapy: A breakthrough in cancer research

    Directory of Open Access Journals (Sweden)

    Editorial Office

    2016-12-01

    Full Text Available The fast growing field of immunotherapy was one of the topics extensively discussed during the recently concluded ESMO Asia Congress 2016, held from December 16– 19th December at the Suntec Convention and Exhibition Centre in Singapore. Unlike drug-based chemotherapy, immunotherapy exploits the body’s own immune system to fight cancer and is increasingly touted as the future of cancer treatment. The concept of using the immune system as a disease-fighting tool was introduced by Dr. William Bradley Coley, the ‘Father of Cancer Immunotherapy’, in the 19th century based on his work that sought to stimulate a patient’s own immune system against bacterial infection. However, a persistent question remains since the advent of immunotherapy over a century ago – can the immune system accurately recognize malignant tumor and eliminate it effectively? The answer to this question remains hotly debated owing to the differing opinions and attitudes on the application of immunotherapy. Dr. Coley noticed that in a number of cases, patients with cancer went into spontaneous remission after developing erysipelas. In 1891, Dr. Coley injected streptococcal organisms (which cause erysipelas into a patient with inoperable cancer and observed remarkable tumor regression. Although he had treated almost 900 patients with bacterial preparations that eventually became known as “Coley’s toxins”, his treatment method was not widely accepted by the medical community possibly owing to the low cure rates and the severe fever caused by the bacteria. Some physicians also feared that the immune system might not have adapted well enough to recognize and eliminate malignant cells exclusively. As a consequence, most oncologists relied on another treatment that was rapidly gaining acceptance at that time, i.e. radiation. It was only after about a century later that the medical community observed a revived interest in immunotherapy. In 1976, a trial was conducted to test the effectiveness of the tuberculosis vaccine Bacille Calmette-Guérin (BCG in treating superficial bladder cancer. The BCG treatment, in which BCG bacilli are inserted directly into a patient’s bladder via a catheter, proved to be an effective form of immunotherapy and the groundbreaking technique is still used today. In general, studies on immunotherapy have presented researchers with two important conclusions: First and foremost, researchers were finally able to prove that the immune system is indeed capable of recognizing cancer cells as a ‘foreign entity’ although they originate from the body’s own tissues. Secondly, by boosting the immune response, researchers are able to enhance other cancer-killing agents at the same time, thus increasing the chances of a successful treatment via immunotherapy. Based on these conclusions, researchers all over the world now face the challenge of figuring out which therapy works best for a specific type of cancer and why some cancer patients respond better than others to the prescribed treatments.At the ESMO Asia 2016 congress, lead author Dr. Makoto Tahara presented his paper ‘Asian head and neck cancer patients live longer with immunotherapy than mixed race group’, in which his team of researchers reported the sub-analysis results on the safety and efficacy of pembrolizumab in 26 patients (of Asian Pacific origin who received a fixed dose of the humanized antibody for 24 months until the detection of disease progression or adverse events. They observed that both the median overall survival and the disease control rate were better in Asians than the overall population, i.e. 11.5 versus 8.4 months and 50.5% versus 37.9%, respectively.According to Dr. Tahara, “The fixed dose of pembrolizumab was well-tolerated in Asian Pacific patients with recurrent/metastatic head and neck cancer. Although the Asian population was small, our findings suggest that they have better median overall survival with pembrolizumab than a mixed population. The clinical benefit of the fixed dose of pembrolizumab in the first and second line treatment of recurrent/metastatic head and neck cancer is being evaluated head-to-head with standard of care chemotherapy in phase 3 trials around the world, including Asia Pacific.” Meanwhile, another research paper on immunotherapy presented at the ESMO Asia 2016 was by Dr. Herbert Loong, Clinical Assistant Professor at the Department of Clinical Oncology of the Chinese University of Hong Kong, who discussed about the cost-effectiveness of immunotherapy with pembrolizumab for advanced melanoma patients in Hong Kong. Dr. Loong said, “We have determined that whilst pembrolizumab is expensive, the increase in quality adjusted life years (QALYs compared with standard cytotoxic chemotherapy, and even so with ipilimumab, qualifies it as a cost-effective approach.” Commenting on the results of the research by Dr. Loong and his colleagues, Dr. Mark Tang – a senior consultant dermatologist said, “Given the high costs of these new treatment options, cost effectiveness studies such as this one are timely and useful as further evidence for the use of pembrolizumab in the treatment of advanced melanoma. This is particularly important in an Asian context where, although rare, acral melanoma has unfortunately been known to present late advanced disease.” Taking all these exciting discoveries into account, a good number of studies have repeatedly shown that progress in cancer immunotherapy has accelerated and resulted in the development of several effective and promising therapies for multiple forms of cancer. At this critical juncture, oncological organizations such as ESMO provide an important knowledge transfer platform for the sharing of expertise and interaction between regional and international experts in the area of onco-immunology. Moving forward, immunotherapy and targeted medicine are expected to remain in the spotlight and will be an indispensable arsenal in the long fight against cancer.

  16. Major breakthrough in personal dust protection

    Energy Technology Data Exchange (ETDEWEB)

    Chadwick, J.

    2004-09-15

    With new studies highlighting one in every 20 miners developing 'black lung', USA labour, industry and government have joined forces to develop a solution. The rapid advance in Personal Dust Monitor (PDM) technology is a perfect example. The article reports a PDM, which is developed by the US National Institute for Occupational Safety and Health, working in the partnership with the United Mine Workers of America, the Bituminous Coal Operators Association and the National Mining Association.

  17. Channelrhodopsins provide a breakthrough insight into strategies ...

    Indian Academy of Sciences (India)

    2009-12-31

    Dec 31, 2009 ... Retinal prostheses electrically stimulating surviving retinal cells and evoking a pseudo light sensation have been investigated over ... gene transfer may cause undesirable side effects such as sys- temic dissemination of ..... corresponding to blue colour and not green and red colours. Recently, a few reports ...

  18. A brilliant breakthrough in OI type V.

    Science.gov (United States)

    Lazarus, S; Moffatt, P; Duncan, E L; Thomas, G P

    2014-02-01

    Interferon-induced transmembrane protein 5 or bone-restricted ifitm-like gene (Bril) was first identified as a bone gene in 2008, although no in vivo role was identified at that time. A role in human bone has now been demonstrated with a number of recent studies identifying a single point mutation in Bril as the causative mutation in osteogenesis imperfecta type V (OI type V). Such a discovery suggests a key role for Bril in skeletal regulation, and the completely novel nature of the gene raises the possibility of a new regulatory pathway in bone. Furthermore, the phenotype of OI type V has unique and quite divergent features compared with other forms of OI involving defects in collagen biology. Currently it appears that the underlying genetic defect in OI type V may be unrelated to collagen regulation, which also raises interesting questions about the classification of this form of OI. This review will discuss current knowledge of OI type V, the function of Bril, and the implications of this recent discovery.

  19. The latest Light Robotics breakthroughs - Postdeadline

    DEFF Research Database (Denmark)

    Glückstad, Jesper; Palima, Darwin; Bañas, Andrew

    Contemporary nanoscopy provides functionalities, not only for observing life science on the smallest scales but also for actively reaching into and manipulating at subcellular levels. This post-deadline contribution describes the latest generation of 3D-printed micro-tools for enabling light-acti......-activated robotics on sub-diffraction scales: Light Robotics....

  20. Breakthrough Energy Savings with Waterjet Technology

    Energy Technology Data Exchange (ETDEWEB)

    Lee W. Saperstein; R. Larry Grayson; David A. Summers; Jorge Garcia-Joo; Greg Sutton; Mike Woodward; T.P. McNulty

    2007-05-15

    Experiments performed at the University of Missouri-Rolla's Waterjet Laboratory have demonstrated clearly the ability of waterjets to disaggregate, in a single step, four different mineral ores, including ores containing iron, lead and copper products. The study focused mainly on galena-bearing dolomite, a lead ore, and compared the new technology with that of traditional mining and milling to liberate the valuable constituent for the more voluminous host rock. The technical term for the disintegration of the ore to achieve this liberation is comminution. The potential for energy savings if this process can be improved, is immense. Further, if this separation can be made at the mining face, then the potential energy savings include avoidance of transportation (haulage and hoisting) costs to move, process and store this waste at the surface. The waste can, instead, be disposed into the available cavities within the mine. The savings also include the elimination of the comminution, crushing and grinding, stages in the processing plant. Future prototype developments are intended to determine if high-pressure waterjet mining and processing can be optimized to become cheaper than traditional fragmentation by drilling and blasting and to optimize the separation process. The basic new mining process was illustrated in tests on two local rock types, a low-strength sandstone with hematite inclusions, and a medium to high-strength dolomite commonly used for construction materials. Illustrative testing of liberation of minerals, utilized a lead-bearing dolomite, and included a parametric study of the optimal conditions needed to create a size distribution considered best for separation. The target goal was to have 50 percent of the mined material finer than 100 mesh (149 microns). Of the 21 tests that were run, five clearly achieved the target. The samples were obtained as run-of-mine lumps of ore, which exhibited a great deal of heterogeneity within the samples. This, in turn, reduced the ability to apply detailed statistical tests to the product outcomes. Nonetheless, a regression analysis showed that operating pressures between 105 (10,000psi) and 140 (15,000psi) MegaPascals (MPa) at traverse speeds no greater than 10 cm/min (4 in/min), best generated the target result. Variation in other parameters, rotation speed, nozzle diameter, and nozzle separation angle, during the preliminary tests did not substantially change the product, and so were kept fixed during the ore mining tests. The experimental protocols were developed to include proper treatment of the lead-bearing materials, which may be considered hazardous. In anticipation of the creation of a mineral processing design for separation of the concentrates from the tailings (waste), assays were made of the metal content of each screen size for each of the 21 runs; with three screens and a pan for undersize, to give a total of 84 assays. This information will enable Dr. McNulty, project consultant, to create a flow sheet for the prototype mining machine. As a preliminary component to such a system, the experimental layout included a product-recovery system that delivered all of the fragmented product to the nest of screens which allowed study of the liberation at the different size levels. Where incomplete liberation is found, a secondary process was demonstrated for using pressurized cavitation to further comminute the material. This concept was successfully demonstrated, with a small cavitation chamber illustrating the much smaller space that such a tool requires, relative to conventional ball and rod mills. Additional testing is ongoing, external to this program, to find whether an one-step process using higher jet pressures and longer dwell times to achieve all the required comminution in mining, is more efficient than a two-step process in which normal jet pressures and feed rates do the initial mining, but full particle liberation is achieved only through secondary processing of the product in a cavitation chamber. Subsequent testing is also planned, to determine preferred methods for separating ore minerals from the waste. Tests with this system have included both the galena samples, and copper ores from Poland. The development of this tool lies within an expanding market for the use of high-pressure waterjet equipment across a broad spectrum of applications. As the industry develops new tools, it is anticipated that the research team will investigate the development of a prototype machine based on these tools, since this will simplify and speed up equipment development. It is hoped that once this is developed that can be taken into an active mine. Such a machine should be able to produce large enough samples to allow assessment of optimal operating conditions.

  1. Mirabegron, a breakthrough in overactive bladder syndrome?

    Directory of Open Access Journals (Sweden)

    Almudena Maestro Nombela

    2017-05-01

    Full Text Available Objective: Overactive bladder syndrome is a condition with high prevalence, which has a negative impact on patients’ quality of life. A drug with a novel mechanism of action has been recently approved: mirabegron. The objective of this study is to review the scientific evidence available on mirabegron, with the aim to analyze its efficacy, safety and cost, and thus estimate its role within current pharmacotherapy. Methods: The effectiveness and safety of mirabegron were analyzed through an evaluation of scientific evidence. The cost of different pharmacological alternatives was calculated based on their Defined Daily Dose (DDD and their manufacturer’s sale price. Results: The use of mirabegron in the treatment of overactive bladder syndrome is supported by three randomized clinical trials, controlled with placebo, at 12 weeks. All three share the same primary efficacy variables (number of incontinence episodes per 24 hours and number of micturitions per 24 hours. Long-term efficacy data are based on a 12-month study, where efficacy outcomes were measured as secondary variables. In all studies, mirabegron showed a significant but modest effect. Some of the most frequently detected adverse effects were: hypertension, increase of glucose in blood, headache, urinary tract infections, constipation and tachycardia. Special attention must be paid to cardiovascular events. Conclusions: The clinical efficacy of mirabegron is very modest and comparable to that achieved with the other drugs approved for this indication. Moreover, it is more expensive than other therapeutic options. Cardiac risks and urinary infections only allow to consider it as an alternative option to anticholinergic drugs, when these are contraindicated, show no clinical efficacy, or cause unacceptable adverse effects.

  2. Activity based costing the performance breakthrough

    CERN Document Server

    Turney, Peter B B

    1996-01-01

    Activity-based costing is a method of measuring the cost and performance of activities, products and customers. It is increasingly being seen as a more accurate method of costing than conventional costing systems, which are being superseded by the fact that automation means that direct material and labour consumption is now a far less accurate means of apportioning overheads. This practical book outlines why conventional cost systems fail, before going on to cover the advantages of activity-based costing, and describing how to put the system in place successfully, and how to apply the lessons learnt quickly. The book takes the reader step-by-step through the various processes involved, from setting up the system, through its operation, to evaluation of the results.

  3. Nanopesticides, a real breakthrough for agriculture?

    Directory of Open Access Journals (Sweden)

    Mendoza Cantú, A.

    2017-01-01

    Full Text Available The expansion of agriculture in the world has provoked, amongst others, the increase in the use of chemical substances for plague control. Scientific advances have shown that nanomaterials have innovative properties that can be used in the development of a new generation of substances that have been called nanopesticides. Through processes of nanoemulsion preparation, polymer addition to create nanocapsules, or the simple use of metallic nanostructures, the efficiency in the application and biological efficacy of chemical methods for plague control, in comparison to conventional ones, has been improved. By performing an analysis of the possible applications and use advantages, and the possible risks to health and the environment, it is concluded that doubt and existing limitations in current knowledge on the exposure and effects in organisms, including the human being, are wide.

  4. Information and Announcements The Breakthrough Prize

    Indian Academy of Sciences (India)

    Resonance – Journal of Science Education. Current Issue : Vol. 23, Issue 3. Current Issue Volume 23 | Issue 3. March 2018. Home · Volumes & Issues · Categories · Special Issues · Search · Editorial Board · Information for Authors · Subscription ...

  5. Social Breakthrough to Global Collective Order

    Directory of Open Access Journals (Sweden)

    Rinaldo C. Michelini

    2013-06-01

    Full Text Available The paper look at the fancy build-up of our planned constructions, conventionally assessing on-the-go progress. The survey covers the tricky cross-links of ‹collective orders› and acknowledged ‹rationality›, viz., reverence and dependence assigned to mind objects expressing culture and ethics. Our relationship with the external world is, then, shortly tacked, because we need some sort of certainty about the ‹real› consistency of what is perceived, to trust in planned improvements. Afterword, the analysis moves to ‹intelligence› enabled processes, with especial focus on political cohesion rules, necessary foundation of the organised effectiveness. Last, the conditional framework of the human progress continuance is sketched, mentioning the existing economy globalisation drawbacks, to enlighten the requirements imposed by the impending ecology globalisation. The topics repeat known facts, only, perhaps, assembled by unusual construal.

  6. Advanced Semiconductor Materials for Breakthrough Photovoltaic Applications

    Energy Technology Data Exchange (ETDEWEB)

    Kouvetakis, John [Arizona State Univ., Tempe, AZ (United States)

    2013-01-03

    The project addressed the need for improved multijunction solar cells as identified within the Solar America Initiative program. The basic Ge/InGaAs/InGaP triple-junction structure that has led to record commercial efficiencies remains unoptimized due to excess current in the germanium component. Furthermore, its deployment cannot be scaled up to terawatt-level applications due to bottlenecks related to germanium's cost and abundance. The purpose of the program was to explore new strategies developed at Arizona State University to deposit germanium films on much cheaper silicon substrates, largely eliminating the germanium bottleneck, and at the same time to develop new materials that should lead to an improvement in multijunction efficiencies. This included the ternary alloy SiGeSn, which can be inserted as a fourth junction in a Ge/SiGeSn/InGaAs/InGaP structure to compensate for the excess current in the bottom cell. Moreover, the possibility of depositing materials containing Sn on Si substrates created an opportunity for replacing the bottom Ge cell with a GeSn alloy, which, combined with new III-V alloys for the top cells, should enable 4-junction structures with perfectly optimized band gaps. The successes of the program, to be described below, has led to the developments of new strategies for the growth of high-quality germanium films on Si substrates and to a widespread recognition that SiGeSn is likely to play a significant role in future generations of high-efficiency devices, as demonstrated by new research and intellectual property efforts by major US industrial players.

  7. Wind power: breakthrough to global dimensions

    International Nuclear Information System (INIS)

    Horrighs, W.

    1996-01-01

    The beginning of the 1980s saw the start of wind-turbine manufacture. Soon it had become a booming industrial sector, thanks mainly to the spirit of some young entrepreneurs and political support in many countries. But the wind-power market has assumed global dimensions and major structural changes have to be faced. (author)

  8. Procedural Pain in Palliative Care: Is It Breakthrough Pain? A Multicenter National Prospective Study to Assess Prevalence, Intensity, and Treatment of Procedure-related Pain in Patients With Advanced Disease.

    Science.gov (United States)

    Magnani, Caterina; Giannarelli, Diana; Casale, Giuseppe

    2017-08-01

    To assess the prevalence of breakthrough pain (BTP) provoked by 6 common procedures in patients with advanced disease. A prospective, cross-sectional, multicenter, national study was performed in 23 palliative care units in Italy. Patients were recruited if they were undergoing one of the following procedures as part of normal care: turning, personal hygiene care, transfer from bed to chair, bladder catheterization, pressure ulcer care, and subcutaneous drug administration. The Numerical Rating Scale was used to measure pain intensity before, during, and after the procedure. One thousand seventy-nine eligible patients were enrolled: 49.7% were male and their mean age was 78.0±11.2 years. Of all patients, 20.9% had experienced a BTP episode within the 24 hours before recruitment. The overall prevalence of procedure-induced BTP was 11.8%, and the mean intensity score (Numeric Rating Scale) was 4.72±1.81. Notably, patients experienced a significant increase in pain intensity during all procedures (Ppatients (12.7%) received analgesics before undergoing any of the procedures, and almost none (1.7%) received analgesics during the procedures to alleviate acute pain. Our findings highlight that simple daily care procedures can lead to BTP among patients with advanced disease. Because such procedures are performed very often during palliative care, more individualized attention to procedural pain control is necessary. Additional research on procedural pain in patients with advanced disease should be encouraged to provide further evidence-based guidance on the use of the available medication for predictable pain flares.

  9. PERFORM 60: Prediction of the effects of radiation for reactor pressure vessel and in-core materials using multi-scale modelling - 60 years foreseen plant lifetime

    International Nuclear Information System (INIS)

    Al Mazouzi, A.; Alamo, A.; Lidbury, D.; Moinereau, D.; Van Dyck, S.

    2011-01-01

    Highlights: → Multi-scale and multi-physics modelling are adopted by PERFORM 60 to predict irradiation damage in nuclear structural materials. → PERFORM 60 allows to Consolidate the community and improve the interaction between universities/industries and safety authorities. → Experimental validation at the relevant scale is a key for developing the multi-scale modelling methodology. - Abstract: In nuclear power plants, materials undergo degradation due to severe irradiation conditions that may limit their operational lifetime. Utilities that operate these reactors need to quantify the ageing and potential degradation of certain essential structures of the power plant to ensure their safe and reliable operation. So far, the monitoring and mitigation of these degradation phenomena rely mainly on long-term irradiation programs in test reactors as well as on mechanical or corrosion testing in specialized hot cells. Continuous progress in the physical understanding of the phenomena involved in irradiation damage and progress in computer sciences have now made possible the development of multi-scale numerical tools able to simulate the materials behaviour in a nuclear environment. Indeed, within the PERFECT project of the EURATOM framework program (FP6), a first step has been successfully reached through the development of a simulation platform that contains several advanced numerical tools aiming at the prediction of irradiation damage in both the reactor pressure vessel (RPV) and its internals using available, state-of-the-art-knowledge. These tools allow simulation of irradiation effects on the nanostructure and the constitutive behaviour of the RPV low alloy steels, as well as their fracture mechanics properties. For the more highly irradiated reactor internals, which are commonly produced using austenitic stainless steels, the first partial models were established, describing radiation effects on the nanostructure and providing a first description of the stress corrosion behaviour of these materials in a primary coolant environment. Recently, relying on the existing PERFECT Roadmap, the FP7 Collaborative Project PERFORM 60 was launched with the overall objective of building on the success of PERFECT to develop similar tools that would allow simulation of the combined effects of irradiation and corrosion on internals, in addition to a further improvement of the existing tools which model irradiation effects in RPV bainitic steels. From a managerial viewpoint, PERFORM 60 is based on two technical sub-projects, namely (i) RPV and (ii) Internals. In addition, a User's Group and training scheme have been initiated in order to allow representatives of constructors, utilities, research organizations, etc. from Europe, USA and Japan to participate actively in the process of appraising the limits and potentialities of the developed tools and to assess their validation against qualified experimental data. Furthermore, significant efforts are being made to share knowledge and experience with young researchers in the field of nuclear materials degradation and to disseminate the results as widely as possible both within the project, and in international conferences, peer reviewed journals and via a dedicated website, that the latter serving as an 'open window' for internal communications and as a close link with similar projects underway worldwide. PERFORM 60 officially kicked off on March 1st, 2009 for a duration of 4 years. There are 20 participants. These comprise European organizations and Universities active in the nuclear field: all are engaged directly in the consortium to provide the intended software tools and to ensure that these are underpinned by physical understanding of the main mechanisms behind the observed in-service degradation phenomena.

  10. The main fiscal dispositions in the domain of energy and mineral raw materials as foreseen by the 2005 finances law and by the last 2004 amended law

    International Nuclear Information System (INIS)

    2004-01-01

    This short paper summarizes in tables the main changes made in the 2005 French finances law and in the 2004 amended law about: the domestic tax on petroleum products (TIPP), the general tax on polluting activities (TGAP), the bio-fuel production units, the tax credits for the implementation of renewable energies in dwellings, the domestic tax on natural gas consumptions (TICGN) for greenhouse owners, the European harmonization of the added-value tax (TVA), the taxes on companies (IS), and the electric utility charges (CSPE). (J.S.)

  11. PERFORM 60 - Prediction of the effects of radiation for reactor pressure vessel and in-core materials using multi-scale modelling - 60 years foreseen plant lifetime

    Science.gov (United States)

    Leclercq, Sylvain; Lidbury, David; Van Dyck, Steven; Moinereau, Dominique; Alamo, Ana; Mazouzi, Abdou Al

    2010-11-01

    In nuclear power plants, materials may undergo degradation due to severe irradiation conditions that may limit their operational life. Utilities that operate these reactors need to quantify the ageing and the potential degradations of some essential structures of the power plant to ensure safe and reliable plant operation. So far, the material databases needed to take account of these degradations in the design and safe operation of installations mainly rely on long-term irradiation programs in test reactors as well as on mechanical or corrosion testing in specialized hot cells. Continuous progress in the physical understanding of the phenomena involved in irradiation damage and continuous progress in computer sciences have now made possible the development of multi-scale numerical tools able to simulate the effects of irradiation on materials microstructure. A first step towards this goal has been successfully reached through the development of the RPV-2 and Toughness Module numerical tools by the scientific community created around the FP6 PERFECT project. These tools allow to simulate irradiation effects on the constitutive behaviour of the reactor pressure vessel low alloy steel, and also on its failure properties. Relying on the existing PERFECT Roadmap, the 4 years Collaborative Project PERFORM 60 has mainly for objective to develop multi-scale tools aimed at predicting the combined effects of irradiation and corrosion on internals (austenitic stainless steels) and also to improve existing ones on RPV (bainitic steels). PERFORM 60 is based on two technical sub-projects: (i) RPV and (ii) internals. In addition to these technical sub-projects, the Users' Group and Training sub-project shall allow representatives of constructors, utilities, research organizations… from Europe, USA and Japan to receive the information and training to get their own appraisal on limits and potentialities of the developed tools. An important effort will also be made to teach young researchers in the field of materials' degradation. PERFORM 60 has officially started on March 1st, 2009 with 20 European organizations and Universities involved in the nuclear field.

  12. Reviews Exhibitions: Collider: Step inside the World's Greatest Experiment Equipment: Hero Steam Turbine Classroom Video: Most of Our Universe is Missing Book: Serving the Reich Book: Breakthrough to CLIL for Physics Book: The Good Research Guide Apps: Popplet Web Watch Apps

    Science.gov (United States)

    2014-03-01

    WE RECOMMEND Collider: step inside the world's greatest experiment A great exhibition at the Science Museum in London Hero Steam Turbine Superb engine model gets up to 2500 rpm Most of Our Universe is Missing BBC video explores the dark truth Serving the Reich Science and morality in Nazi Germany The Good Research Guide A non-specialist book for teachers starting out in education research WORTH A LOOK Breakthrough to CLIL for Physics A book based on a physics curriculum for non-English students WEB WATCH Electric cycles online: patterns of use APPS The virtual laboratory advances personal skills

  13. Breakthroughs in photonics 2012: 2012 breakthroughs in lab-on-a-chip and optical biosensors

    OpenAIRE

    Duval, Daphné; Lechuga, Laura M.

    2013-01-01

    We review the most important achievements published in 2012 in the field of lab-on-a-chip (LOC) and optical biosensors. We will specially focus on optical label-free biosensors and their implementation into lab-on-a-chip platforms, with an emphasis on manuscripts demonstrating bioanalytical applications. © 2009-2012 IEEE.

  14. Increasing retention in care of HIV-positive women in PMTCT services through continuous quality improvement-breakthrough (CQI-BTS) series in primary and secondary health care facilities in Nigeria: a cluster randomized controlled trial. The Lafiyan Jikin Mata Study.

    Science.gov (United States)

    Oyeledun, Bolanle; Oronsaye, Frank; Oyelade, Taiwo; Becquet, Renaud; Odoh, Deborah; Anyaike, Chukwuma; Ogirima, Francis; Ameh, Bernice; Ajibola, Abiola; Osibo, Bamidele; Imarhiagbe, Collins; Abutu, Inedu

    2014-11-01

    Rates of retention in care of HIV-positive pregnant women in care programs in Nigeria remain generally poor with rates around 40% reported for specific programs. Poor quality of services in health facilities and long waiting times are among the critical factors militating against retention of these women in care. The aim of the interventions in this study is to assess whether a continuous quality improvement intervention using a Breakthrough Series approach in local district hospitals and primary health care clinics will lead to improved retention of HIV-positive women and mothers. A cluster randomized controlled trial with 32 health facilities randomized to receive a continuous quality improvement/Breakthrough Series intervention or not. The care protocol for HIV-infected pregnant women and mothers is the same in all sites. The quality improvement intervention started 4 months before enrollment of individual HIV-infected pregnant women and initially focused on reducing waiting times for women and also ensuring that antiretroviral drugs are dispensed on the same day as clinic attendance. The primary outcome measure is retention of HIV-positive mothers in care at 6 months postpartum. Results of this trial will inform whether quality improvement interventions are an effective means of improving retention in prevention of mother-to-child transmission of HIV programs and will also guide where health system interventions should focus to improve the quality of care for HIV-positive women. This will benefit policymakers and program managers as they seek to improve retention rates in HIV care programs.

  15. Observational breakthroughs lead the way to improved hydrological predictions

    Science.gov (United States)

    Lettenmaier, Dennis P.

    2017-04-01

    New data sources are revolutionizing the hydrological sciences. The capabilities of hydrological models have advanced greatly over the last several decades, but until recently model capabilities have outstripped the spatial resolution and accuracy of model forcings (atmospheric variables at the land surface) and the hydrologic state variables (e.g., soil moisture; snow water equivalent) that the models predict. This has begun to change, as shown in two examples here: soil moisture and drought evolution over Africa as predicted by a hydrology model forced with satellite-derived precipitation, and observations of snow water equivalent at very high resolution over a river basin in California's Sierra Nevada.

  16. Breakthrough in the Transplantation of Thoracic Organs in Hungary.

    Science.gov (United States)

    Rényi-Vámos, F; Hartyánszky, I; Szabolcs, Z; Lang, G

    2017-09-01

    In 2016 the focus was, by all means, on the transplantation on thoracic organs. More than 50 heart transplantations were performed in this year. With this achievement, the Hungarian Heart Transplantation Program became one of the leading programs in the world. In the Thoracic Surgery Unit of the National Institute of Oncology and the Thoracic Surgery Department of Semmelweis University the first successful lung transplantation was carried out on December 12, 2015 when the Hungarian Lung Transplantation Program was launched. Copyright © 2017 Elsevier Inc. All rights reserved.

  17. Recent Breakthroughs in the Conversion of Ethanol to Butadiene

    Directory of Open Access Journals (Sweden)

    Guillaume Pomalaza

    2016-12-01

    Full Text Available 1,3-Butadiene is traditionally produced as a byproduct of ethylene production from steam crackers. What is unusual is that the alternative production route for this important commodity chemical via ethanol was developed a long time ago, before World War II. Currently, there is a renewed interest in the production of butadiene from biomass due to the general trend to replace oil in the chemical industry. This review describes the recent progress in the production of butadiene from ethanol (ETB by one or two-step process through intermediate production of acetaldehyde with an emphasis on the new catalytic systems. The different catalysts for butadiene production are compared in terms of structure-catalytic performance relationship, highlighting the key issues and requirements for future developments. The main difficulty in this process is that basic, acid and redox properties have to be combined in one single catalyst for the reactions of condensation, dehydration and hydrogenation. Magnesium and zirconium-based catalysts in the form of oxides or recently proposed silicates and zeolites promoted by metals are prevailing for butadiene synthesis with the highest selectivity of 70% at high ethanol conversion. The major challenge for further application of the process is to increase the butadiene productivity and to enhance the catalyst lifetime by suppression of coke deposition with preservation of active sites.

  18. Spin-polarized scanning tunneling microscopy: breakthroughs and highlights.

    Science.gov (United States)

    Bode, Matthias

    2012-01-01

    The principle of scanning tunneling microscopy, an imaging method with atomic resolution capability invented by Binnig and Rohrer in 1982, can be adapted for surface magnetism studies by using magnetic probe tips. The contrast mechanism of this so-called spin-polarized scanning tunneling microscopy, or SP-STM, relies on the tunneling magneto-resistance effect, i.e. the tip-sample distance as well as the differential conductance depend on the relative magnetic orientation of tip and sample. To illustrate the working principle and the unique capabilities of SP-STM, this compilation presents some key experiments which have been performed on various magnetic surfaces, such as the topological antiferromagnet Cr(001), a double-layer of Fe which exhibits a stripe- domain pattern with about 50 nm periodicity, and the Mn monolayer on W(110), where the combination of experiment and theory reveal an antiferromagnetic spin cycloid. Recent experimental results also demonstrate the suitability of SP-STM for studies of dynamic properties, such as the spin relaxation time of single magnetic nanostructures.

  19. Application of the rainfall infiltration breakthrough (RIB) model for ...

    African Journals Online (AJOL)

    2012-05-23

    May 23, 2012 ... rec har ge. (m m. ) W ater lev el fluc tuation. (m. ) Months of simulation rainfall. Recharge amount. WLF dh(crd) dh(rib). (c) TMG544. Figure 4. Daily/monthly rainfall, observed. WLF as well as calculated WLF and groundwater recharge in Riverlands and Oudebosch obtained from the. RIB model and CRD.

  20. Research Leads to Rights Breakthrough for Arab Women | IDRC ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    2010-12-10

    Dec 10, 2010 ... “Most of the women who were part of the research supported by IDRC as interviewees became spokeswomen for the campaign, so it was really a great example of using research for empowerment.” — Lina Abou Habib, Lebanon ...

  1. Breakthroughs in Low-Profile Leaky-Wave HPM Antennas

    Science.gov (United States)

    2015-12-21

    curved wall. Equation (8) leads to another quadratic equation that is being solved to find the intersection point . Equation (9) has two roots with...assume the leaky wall to have the equation and the lower side wall have the same simple quadratic equation . However this time and in fact we need...meters with the following formula . (Figure 11 indicates a short flat input section guide as well.) The compensation achieved by the quadratic

  2. Methods for simulating solute breakthrough curves in pumping groundwater wells

    Science.gov (United States)

    Starn, J. Jeffrey; Bagtzoglou, Amvrossios C.; Robbins, Gary A.

    2012-01-01

    In modeling there is always a trade-off between execution time and accuracy. For gradient-based parameter estimation methods, where a simulation model is run repeatedly to populate a Jacobian (sensitivity) matrix, there exists a need for rapid simulation methods of known accuracy that can decrease execution time, and thus make the model more useful without sacrificing accuracy. Convolution-based methods can be executed rapidly for any desired input function once the residence-time distribution is known. The residence-time distribution can be calculated efficiently using particle tracking, but particle tracking can be ambiguous near a pumping well if the grid is too coarse. We present several embedded analytical expressions for improving particle tracking near a pumping well and compare them with a finely gridded finite-difference solution in terms of accuracy and CPU usage. Even though the embedded analytical approach can improve particle tracking near a well, particle methods reduce, but do not eliminate, reliance on a grid because velocity fields typically are calculated on a grid, and additional error is incurred using linear interpolation of velocity. A dilution rate can be calculated for a given grid and pumping well to determine if the grid is sufficiently refined. Embedded analytical expressions increase accuracy but add significantly to CPU usage. Structural error introduced by the numerical solution method may affect parameter estimates.

  3. Uncertainty in forecasting breakthrough of fluid transported through fractures

    International Nuclear Information System (INIS)

    Horne, R.N.

    1989-01-01

    Tracer experiments in geothermal reservoirs emphasize the very great variability in rates of fluid movement through fractured rocks. This variability extends from the 10-meter to the kilometer-length scale. Thus tracer returns have been observed at some locations within hours at distances of up to 1 kilometer from the injection point, while other much nearer locations in the same formation do not observe the tracer until much later. In addition, transport rates have sometimes been extremely fast (up to 100 m/hr) even over such distances. This paper discusses the conclusions reached after compiling the results of a large number of tracer tests in several different fractured reservoirs. It is evident in some cases that large-scale geological features, such as faults, are responsible for the variations in tracer return time. In other cases, there is no clear physical description that explains the differences. These results suggest that there will be no a priori way of forecasting transport rates in fractured systems without performing a tracer test

  4. Dances with Membranes: Breakthroughs from Super-resolution Imaging

    Science.gov (United States)

    Curthoys, Nikki M.; Parent, Matthew; Mlodzianoski, Michael; Nelson, Andrew J.; Lilieholm, Jennifer; Butler, Michael B.; Valles, Matthew; Hess, Samuel T.

    2017-01-01

    Biological membrane organization mediates numerous cellular functions and has also been connected with an immense number of human diseases. However, until recently, experimental methodologies have been unable to directly visualize the nanoscale details of biological membranes, particularly in intact living cells. Numerous models explaining membrane organization have been proposed, but testing those models has required indirect methods; the desire to directly image proteins and lipids in living cell membranes is a strong motivation for the advancement of technology. The development of super-resolution microscopy has provided powerful tools for quantification of membrane organization at the level of individual proteins and lipids, and many of these tools are compatible with living cells. Previously inaccessible questions are now being addressed, and the field of membrane biology is developing rapidly. This chapter discusses how the development of super-resolution microscopy has led to fundamental advances in the field of biological membrane organization. We summarize the history and some models explaining how proteins are organized in cell membranes, and give an overview of various super-resolution techniques and methods of quantifying super-resolution data. We discuss the application of super-resolution techniques to membrane biology in general, and also with specific reference to the fields of actin and actin-binding proteins, virus infection, mitochondria, immune cell biology, and phosphoinositide signaling. Finally, we present our hopes and expectations for the future of super-resolution microscopy in the field of membrane biology. PMID:26015281

  5. Microchips for CE: breakthroughs in real-world food analysis.

    Science.gov (United States)

    Escarpa, Alberto; González, María Cristina; López Gil, Miguel Angel; Crevillén, Agustín G; Hervás, Miriam; García, Miguel

    2008-12-01

    The well-known complexity of food matrices is approached using CE microchips with different strategies to improve the selectivity and sensitivity of the analysis by avoiding and/or making the sample preparation as simple as possible: (i) enhancing the peak capacity in order to perform direct injection, (ii) using the microchip platform to measure one target analyte/group of analytes with or without separating other related interferences, (iii) integrating sample preparation steps on the microchip platform, and (iv) integrating new analytical tools from nanotechnology in the detection stage. New analyte separations of food significance involving DNA probes, biogenic amines, vanilla flavors, and dyes have been reported as successfully breaking new barriers in areas of high impact in the market, such as transgenic food analysis, as well as the detection of frauds and toxins. Simple microchip layouts are still the most common designs used, though sophisticated new ones are emerging. In contrast to other application areas, electrochemical detection continues to be the most common detection route, followed by LIF, though non-conventional detection routes are also emerging, such as chemiluminescence or UV. In terms of analytical performance, the integration of calibration and quality control on a microchip platform, and remarkable accuracy and precision are being obtained using creative analytical methodologies that enhance the analytical potency of microfluidic chips for their future commercialization. This review critically states the most important advances derived from work done in the field over the past 2-3 years.

  6. Breakthrough Therapies: Cystic Fibrosis (CF) Potentiators and Correctors

    Science.gov (United States)

    Solomon, George M.; Marshall, Susan G.; Ramsey, Bonnie W.; Rowe, Steven M.

    2015-01-01

    Cystic Fibrosis is caused by mutations in the Cystic Fibrosis Transmembrane conductance Regulator (CFTR) gene resulting in abnormal protein function. Recent advances of targeted molecular therapies and high throughput screening have resulted in multiple drug therapies that target many important mutations in the CFTR protein. In this review, we provide the latest results and current progress of CFTR modulators for the treatment of cystic fibrosis, focusing on potentiators of CFTR channel gating and Phe508del processing correctors for the Phe508del CFTR mutation. Special emphasis is placed on the molecular basis underlying these new therapies and emerging results from the latest clinical trials. The future directions for augmenting the rescue of Phe508del with CFTR modulators is also emphasized. PMID:26097168

  7. Modernization Breakthrough: Search for Innovations at the Comprador Market

    Directory of Open Access Journals (Sweden)

    Sidorov Viktor Aleksandrovich

    2014-11-01

    Full Text Available Formation of the economy based on a new technological basis, a new cycle of scientific and technical progress, suggests the involvement of the innovative development factors. Among these new techniques we should mention technology, organization and motivation of labor, qualified labor force, management innovation, intellectual potential. This, in turn, implies broad development of inventions, the appearance of the pioneer and major inventions, the formation of innovation as well as their distribution. The article deals with the problem of the susceptibility of the Russian economy to innovative production methods. The authors examine the socio-economic background of modernization of the national economy. It is proved that the human capital plays special role in the use, development and coordination of innovative growth factors. The problems of formation and development of human capital in modern Russia are discussed. The necessity of forming and analyzing the indicators of social capital in the country, which takes into account the socio-political stability, law and order, protection from corruption, income differentiation, mutual trust. A critical analysis of the most important indicators of innovation activity of enterprises, allows to identify the factors that promote and prevent its increase. It is proved that a low level of innovation activity of enterprises due to inadequate funding of science and education, and the sharp differences in income inequality hamper the development of the infrastructure of the innovation process. The authors disclose the role of start-ups, as an effective framework for the implementation of innovations and objectify the parameters of economic growth suggesting to concentrate resources on innovation.

  8. Emancipating Sexuality: Breakthroughs into a Bulwark of Tradition.

    Science.gov (United States)

    Alexander, Amy C; Inglehart, Ronald; Welzel, Christian

    This article presents evidence for a rising emancipatory spirit, across generations and around the world, in a life domain in which religion hitherto blocked emancipatory gains: sexual freedoms. We propose an explanation of rising emancipative values that integrates several approaches into a single idea-the utility ladder of freedoms. Specifically, we suggest that objectively improving living conditions-from rising life expectancies to broader education-transform the nature of life from a source of threats into a source of opportunities. As life begins to hold more promise for increasing population segments, societies climb the utility ladder of freedoms: practicing and respecting universal freedoms becomes increasingly vital to take advantage of rising life opportunities. This trend has begun to spill over into a life domain in which religious norms have until recently been able to resist emancipatory gains: sexual freedoms. We present (1) crossnational, (2) longitudinal, (3) generational and (4) multilevel evidence on an unprecedentedly broad basis in support of this theory.

  9. Business Model Warfare: The Strategy of Business Breakthroughs

    Directory of Open Access Journals (Sweden)

    Langdon Morris

    2013-12-01

    Full Text Available There’s a story behind every business success and every business failure, sometimes the story of a great idea; sometimes one that failed. Sometimes it’s a story of insightful management, or management that failed. But almost always it’s a story about change. Change in the market; change in the economy; change in a particular product or service that transformed a failure into a success, or vice versa. Hidden behind many of these changes, or sometimes as a result of them, there is change in what customers experience, and as a result, a change in their perceptions and attitudes, and then in their buying habits. Companies soar, or collapse, as a consequence. While we study the stories to learn about the specific changes, events, insights, and breakdowns in each case, we also look for broader and deeper explanations that show how change applies across industries and the whole of the economy. The broader patterns are often Business Model Innovations, the subject of this white paper. Here we propose a specific model explaining how large companies create and sustain market leadership in today’s market, or the traps that they fall into that prevent them from doing so.

  10. OTEC to hydrogen fuel cells - A solar energy breakthrough

    Science.gov (United States)

    Roney, J. R.

    Recent advances in fuel cell technology and development are discussed, which will enhance the Ocean Thermal Energy Conversion (OTEC)-hydrogen-fuel cell mode of energy utilization. Hydrogen obtained from the ocean solar thermal resources can either be liquified or converted to ammonia, thus providing a convenient mode of transport, similar to that of liquid petroleum. The hydrogen fuel cell can convert hydrogen to electric power at a wide range of scale, feeding either centralized or distributed systems. Although this system of hydrogen energy production and delivery has been examined with respect to the U.S.A., the international market, and especially developing countries, may represent the greatest opportunity for these future generating units.

  11. Breakthrough in fake prevention. Nuclear track-etching

    International Nuclear Information System (INIS)

    Yan Yushun; He Xiangming; Zhang Quanrong

    1999-01-01

    Nuclear particle track-etched anti-counterfeit marking is a new weapon against fake products. The marks is manufactured by intricate high technology in state-controlled sensitive nuclear facilities which ensures that the mark can not be copied. The pattern of the mark is characterized by its permeability, and can be distinguished from fakes by using a transparent liquid (e.g. water), colored pen or chemical reagent. The technique has passed the of facial health safety examination and poses no danger of nuclear irradiation

  12. Breakthroughs in Low-Profile Leaky-Wave HPM Antennas

    Science.gov (United States)

    2016-09-21

    Microwaves (HPM) Antennas. Low-profile Conformal Antennas. 16. SECURITY CLASSIFICATION OF: 17. LIMITATION OF ABSTRACT 18. NUMBER OF PAGES 19a...characterize, quantify, and document the performance, behavior, and design of innovative High Power Microwave (HPM, GW-class) antennas of the forward...established useful equations and algorithms for predicting reflections and transmission of incident TE waves from parallel-wire grills, dielectric

  13. Breakthrough of Oscillatoria limnetica and microcystin toxins into ...

    African Journals Online (AJOL)

    The presence of cyanobacteria and their toxins (cyanotoxins) in processed drinking water may pose a health risk to humans and animals. The efficiency of conventional drinking water treatment processes (coagulation, flocculation, rapid sand filtration and disinfection) in removing cyanobacteria and cyanotoxins varies ...

  14. Breakthrough Capability for UVOIR Space Astronomy: Reaching the Darkest Sky

    Science.gov (United States)

    Greenhouse, Matthew A.; Benson, Scott W.; Englander, Jacob; Falck, Robert D.; Fixsen, Dale J.; Gardner, Jonathan P.; Kruk, Jeffrey W.; Oleson, Steven R.; Thronson, Harley A.

    2014-01-01

    We describe how availability of new solar electric propulsion (SEP) technology can substantially increase the science capability of space astronomy missions working within the near-UV to far-infrared (UVOIR) spectrum by making dark sky orbits accessible for the first time. We present a proof of concept case study in which SEP is used to enable a 700 kg Explorer-class observatory payload to reach an orbit beyond where the zodiacal dust limits observatory sensitivity. The resulting scientific performance advantage relative to a Sun-Earth L2 point orbit is presented and discussed. We find that making SEP available to astrophysics Explorers can enable this small payload program to rival the science performance of much larger long development-time systems. We also present flight dynamics analysis which illustrates that this concept can be extended beyond Explorers to substantially improve the sensitivity performance of heavier (7000 kg) flagship-class astrophysics payloads such as the UVOIR successor to the James Webb Space Telescope by using high power SEP that is being developed for the Asteroid Redirect Robotics Mission.

  15. A Breakthrough Propulsion Architecture for Interstellar Precursor Missions

    Data.gov (United States)

    National Aeronautics and Space Administration — We propose a new power/propulsion architecture to enable missions such as a 12-yr flight time to 500 AU—the distance at which solar gravity lensing can be used to...

  16. Elusive prize: enormous coal gas potential awaits production technology breakthrough

    Energy Technology Data Exchange (ETDEWEB)

    Collison, M.

    2002-01-07

    The expanded gas pipeline grid has excess capacity, and gas resources are declining. There is increasing interest in development of Canada's resources of coalbed methane (CBM). The chairman of the Canadian Coalbed Methane Forum estimates that Canada has more than 3,000 trillion ft{sup 3} of gas awaiting suitable technology. PanCanadian and MGV Energy conducted a CBM exploration and pilot study on the Palliser spread in southern Alberta. Results from 23 of 75 wells are encouraging. The study is being accelerated and expanded to include an additional 50 wells elsewhere in Alberta. Some scientists anticipate commercial CBM production within two years. Problems facing developers include the large land holdings necessary for economic CBM production and the disposal of coal formation water. It is anticipated that U.S. technology will be modified and used. The potential for CBM development at Pictou in Nova Scotia and in British Columbia in the foothills is considered. 3 figs.

  17. Breakthrough of Oscillatoria limnetica and microcystin toxins into ...

    African Journals Online (AJOL)

    2016-01-01

    , 1996) and Serbia (Svircev et al., 2009) have been linked to drinking water containing MCs. Moreover,. Lévesque et al. (2014) documented a relationship between gastrointestinal symptoms and consumption of drinking water.

  18. Internet Use: Breakthrough Or Breakdown? | Omole | IFE PsychologIA

    African Journals Online (AJOL)

    Full Text: EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors · FAQ's · More about AJOL · AJOL's Partners · Terms and Conditions of Use · Contact AJOL · News. OTHER RESOURCES.

  19. Läbimurre muuseumis = Breakthrough at the museum / Kai Lobjakas

    Index Scriptorium Estoniae

    Lobjakas, Kai, 1975-

    2006-01-01

    Eesti Tarbekunsti- ja Disainimuuseumis tehtud muudatustest, mille eesmärgiks oli laiendada sissepääsu ja külastajate teenindamiseks vajalikku pinda ning värskendada muuseumi üldilmet. Autorid: Inga Raukas, Monika Löve. Otsaseina katva graafilise lahenduse autoriks on Martin Pedanik, kes kujundas muuseumile ka uue logo. Sisekujunduses on kasutatud M. Löve ja Incognitos kujundatud mööblit. Projekt 2005, valmis 2005-2006. Ill.: I korruse plaan, 4 värv. sisevaadet

  20. A rational reconstruction of Six Sigma's Breakthrough Cookbook

    NARCIS (Netherlands)

    de Koning, H.; de Mast, J.

    2006-01-01

    Purpose: The purpose of this paper is to develop a consistent and crystallized exposition of Six-Sigma's methodology for improvement projects, which could serve as a basis for subsequent scientific research of the method. Design/methodology/approach: The paper shows that reformulation of imprecise

  1. A Big Breakthrough for T.A. Unions.

    Science.gov (United States)

    Smallwood, Scott

    2001-01-01

    Describes how New York University has become the first private institution to recognize the right of teaching assistants to bargain collectively and possible implications for other private institutions. (EV)

  2. [An approach to DSM-5: a breakthrough in psychiatry?].

    Science.gov (United States)

    Heerlein, Andrés L

    2014-01-01

    One of the main problems of current psychiatry is that its diagnostic classification systems are not precise and reliable, they do not help to identify with certainty a specific type of mental disorder and they frequently overlap two or more diagnoses. This may conduce to over diagnosis and overtreatment, which is the main criticism of the DSM system. The American Psychiatric Association (APA) launched recently the DSM-5, the fifth edition of its diagnostic manual, which provides diagnostic criteria for thousands of psychiatrist, psychologist and researchers and who will be using it in the next coming years. DSM-5, like the preceding editions, placed disorders in discrete categories such as bipolar disorder or schizophrenia. The problem is that scientists have been unable to find yet a genetic or neurobiological evidence to support the theory of mental disorders as separate categories. Several authors wanted the latest DSM to move away from the category model towards a new "dimensional approach", where disorders can be measured and mental illnesses overlapping can be reduced. Recent findings supports this new dimensional strategy, suggesting that the disorders are a product of shared risk factors that lead to abnormalities in specific drives, which can be measured and used to place persons on one of several spectra. In some parts the DSM-5 entered changes aiming to achieve a greater objectivity. The door for new changes in each category, dimension or criteria has been opened, favoring an evidence-based development of the future versions. DSM-5 is presented as a "living document" that can be updated easily. However, the category model still remains for many disorders. The future research in psychiatric diagnostic systems requires more genetic-molecular and neurophysiological evidence and more objective multinational field trials, in order to confirm the existence of the new diagnostic entities, spectrums or dimensions. This approach may provide us reliable information about the pathogenesis, psychopathology, adequate taxonomy and treatment of mental disorders.

  3. Study of Vacuum Energy Physics for Breakthrough Propulsion

    Science.gov (United States)

    Millis, Marc G. (Technical Monitor); Maclay, G. Jordan; Hammer, Jay; Clark, Rod; George, Michael; Kim, Yeong; Kir, Asit

    2004-01-01

    This report summarizes the accomplishments during a three year research project to investigate the use of surfaces, particularly in microelectromechanical systems (MEMS), to exploit quantum vacuum forces. During this project, we developed AFM instrumentation to repeatably measure Casimir forces in the nanoNewton range at 10 6 torr, designed an experiment to measure attractive and repulsive quantum vacuum forces, developed a QED based theory of Casimir forces that includes non-ideal material properties for rectangular cavities and for multilayer slabs, developed theoretical models for a variety of microdevices utilizing vacuum forces, applied vacuum physics to a gedanken spacecraft, and investigated a new material with a negative index of refraction.

  4. Transgenic mouse models--a seminal breakthrough in oncogene research.

    Science.gov (United States)

    Smith, Harvey W; Muller, William J

    2013-12-01

    Transgenic mouse models are an integral part of modern cancer research, providing a versatile and powerful means of studying tumor initiation and progression, metastasis, and therapy. The present repertoire of these models is very diverse, with a wide range of strategies used to induce tumorigenesis by expressing dominant-acting oncogenes or disrupting the function of tumor-suppressor genes, often in a highly tissue-specific manner. Much of the current technology used in the creation and characterization of transgenic mouse models of cancer will be discussed in depth elsewhere. However, to gain a complete appreciation and understanding of these complex models, it is important to review the history of the field. Transgenic mouse models of cancer evolved as a new and, compared with the early cell-culture-based techniques, more physiologically relevant approach for studying the properties and transforming capacities of oncogenes. Here, we will describe early transgenic mouse models of cancer based on tissue-specific expression of oncogenes and discuss their impact on the development of this still rapidly growing field.

  5. [Overcoming neurological diseases-breakthrough for new era].

    Science.gov (United States)

    Mizusawa, Hidehiro

    2013-01-01

    Neurological diseases have long been thought to be difficult or intractable to be cured. Recent progress in researches on etiologies and pathogeneses of many neurological diseases, however, has made it become possible to treat some diseases such as bulbo-spinal muscular atrophy and Alzheimer's disease not only symptomatically but also in the sense of disease modification. We may be at the entrance of a new era where many neurological diseases would become treatable and overcome. My individual experiences studying 3 diseases, namely, distal myopathy with rimmed vacuoles, amyotrophic lateral sclerosis and spinocerebellar ataxia were presented and through them the following massages were conveyed to young neurologists of the Japanese Society of Neurology (JSN); To tackle the case even there is no similar case in the literature because you are the only one who could help the patient and some clues must be found, To cooperate with other colleagues and patients because you are not alone, To be reasonable, logical or scientific, To always be innovative or seek better situations, and To be global or international sharing real time information with other peoples in the world. JSN will make great leaps to the goals under the mission to contribute happiness of peoples in Japan and other countries through neurology including neurological practice, education and research.

  6. Urban energy efficiency: a breakthrough vs. the global crisis

    Directory of Open Access Journals (Sweden)

    Roberto Pagani

    2011-04-01

    Full Text Available The environmental design and its complex multi-disciplinary consequences are central in the thinking of the responsibilities, which the Institutes of Knowledge are based on. It is no longer a battle to the forefront, just for the explorers. It is an acquired and consolidated culture, but from an operational standpoint there are many areas of innovation, development, affirmation still to develop. The article focuses on four central aspects of the new culture of energy efficiency in urban systems: the new global/local decision making, the sustainability in urban processes, the new skills for research and development, the growing interest of industries in innovative urban technologies. It provides the main trends in Europe and a vision of a possible exit from the complex socio-economic situation of today: a culture of complexity and energy innovation as factors of development.

  7. The genetic basis of amyotrophic lateral sclerosis: recent breakthroughs

    Directory of Open Access Journals (Sweden)

    Eykens C

    2015-10-01

    Full Text Available Caroline Eykens,1,2 Wim Robberecht1–31Research Group Experimental Neurology, Department of Neurosciences, KU Leuven – University of Leuven, Leuven, Belgium; 2Laboratory of Neurobiology, Vesalius Research Center, VIB, Leuven, Belgium; 3Department of Neurology, University Hospitals Leuven, Leuven, BelgiumAbstract: Deciphering the genetic architecture of amyotrophic lateral sclerosis (ALS, an adult-onset neurodegenerative disorder of the motor neuron system, is important to understand the etiology of this fatal disease as well as to develop customized ALS therapies based on the patient's genetic fingerprint. In this review, we discuss the genetic basis of ALS, and attempt to link the causal genes to three highly interrelated pathogenic mechanisms: dysproteostasis, RNA dysregulation, and axon dysfunction. In addition, we address the clinical and biological implications of these genetic findings. Furthermore, we explore to what extent genetic knowledge can be converted into targeted and personalized treatments.Keywords: amyotrophic lateral sclerosis, frontotemporal dementia, genetics, disease modifiers, personalized medicine

  8. Cloning: Past, Present, and the Exciting Future. Breakthroughs in Bioscience.

    Science.gov (United States)

    Di Berardino, Marie A.

    This document explores the history of cloning by focusing on Dolly the Sheep, one of the first large animal clonings. The disadvantages and advantages of transgenic clones are discussed as well as the future implications of cloning from the perspective of human health. (Contains 10 resources.) (YDS)

  9. Facade integration of solar thermal collectors. A breakthrough

    Energy Technology Data Exchange (ETDEWEB)

    Roecker, Christian; Munari-Probst, MariaCristina; Chambrier, Estelle de; Schueler, Andreas; Scartezzini, Jean-Louis [Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne (Switzerland). Lab. d' Energie Solaire et de Physique du Batiment

    2008-07-01

    One main barrier to the acceptability of facade use of solar thermal collectors is their black appearance and the visibility of piping or absorber irregularities through the glazing. To facilitate facade integration, a project was set up to develop selective filters reflecting only a small part of the solar spectrum in the visible range while letting the rest of the radiation heat the absorber. These filters were successfully produced and, combined with a diffusing glass treatment, have achieved the desired masking effect with minor impact on the collector efficiency (less than 10%). Glasses of various colours combined with several diffusing finishing (acid etching, structured glass etc..) can be produced that are able to hide the absorber. Such glazings will allow the use of the same product both in front of facade areas equipped with solar absorbers (as collector external glass) and in front of the non exposed areas (as facade cladding), opening the way to a broad variety of active facade designs. The active elements can then be positioned at will on the exposed areas, and their quantity determined only by thermal needs. By freeing the dimension of the facade area that can be clad with this glazing from the thermally needed surface for collectors, a major step to help architects use solar thermal on facades has been taken. (orig.)

  10. Breakthrough CO₂ adsorption in bio-based activated carbons.

    Science.gov (United States)

    Shahkarami, Sepideh; Azargohar, Ramin; Dalai, Ajay K; Soltan, Jafar

    2015-08-01

    In this work, the effects of different methods of activation on CO2 adsorption performance of activated carbon were studied. Activated carbons were prepared from biochar, obtained from fast pyrolysis of white wood, using three different activation methods of steam activation, CO2 activation and Potassium hydroxide (KOH) activation. CO2 adsorption behavior of the produced activated carbons was studied in a fixed-bed reactor set-up at atmospheric pressure, temperature range of 25-65°C and inlet CO2 concentration range of 10-30 mol% in He to determine the effects of the surface area, porosity and surface chemistry on adsorption capacity of the samples. Characterization of the micropore and mesopore texture was carried out using N2 and CO2 adsorption at 77 and 273 K, respectively. Central composite design was used to evaluate the combined effects of temperature and concentration of CO2 on the adsorption behavior of the adsorbents. The KOH activated carbon with a total micropore volume of 0.62 cm(3)/g and surface area of 1400 m(2)/g had the highest CO2 adsorption capacity of 1.8 mol/kg due to its microporous structure and high surface area under the optimized experimental conditions of 30 mol% CO2 and 25°C. The performance of the adsorbents in multi-cyclic adsorption process was also assessed and the adsorption capacity of KOH and CO2 activated carbons remained remarkably stable after 50 cycles with low temperature (160°C) regeneration. Copyright © 2015. Published by Elsevier B.V.

  11. [The breakthrough of personalized medicine, new hopes and new challenges].

    Science.gov (United States)

    Flippot, Ronan; Massard, Christophe; Auclin, Edouard; Azria, David; Bourien, Héloïse; Rochigneux, Philippe; Schernberg, Antoine; Verlingue, Loïc; Zafrani, Lara; Vignot, Stéphane

    2017-09-01

    The development of personalized medicine in oncology is based on biomarkers that help select populations for more efficient and less toxic therapies. The onset of molecular biology led to new paradigms in drug development, with efficacy data reported in early clinical trials and accelerated approvals. Multiple clinical trials, including SHIVA, SAFIR-01 and MOSCATO-01, have been developed to evaluate the interest of treatment decision-making based on tumor molecular profiling, with the ambition to replace historical clinical and pathological classifications. Targeted molecular therapies have also drastically enhanced the prognosis of patients in several cancer subtypes, with increased use in the context of advanced palliative care. Breaking through those boundaries might lead to a true precision medicine in oncology, which implementation in clinical routine is now expected by patients and physicians. Copyright © 2017 Société Française du Cancer. Published by Elsevier Masson SAS. All rights reserved.

  12. City of the Sun. A break-through in sustainability

    International Nuclear Information System (INIS)

    Bastiaansen, P.

    1999-01-01

    A newly planned urban area in Heerhugowaard, Netherlands, will be named City of the Sun, while solar energy will be applied in that area in many different forms. The target is to build a district that is emission-neutral: the area will be self-sufficient where it concerns the energy supply without CO2 emission. Solar cells will be used where possible

  13. God created the integers the mathematical breakthroughs that changed history

    CERN Document Server

    2007-01-01

    Bestselling author and physicist Stephen Hawking explores the "masterpieces" of mathematics, 25 landmarks spanning 2,500 years and representing the work of 15 mathematicians, including Augustin Cauchy, Bernard Riemann, and Alan Turing. This extensive anthology allows readers to peer into the mind of genius by providing them with excerpts from the original mathematical proofs and results. It also helps them understand the progression of mathematical thought, and the very foundations of our present-day technologies. Each chapter begins with a biography of the featured mathematician, clearly explaining the significance of the result, followed by the full proof of the work, reproduced from the original publication.

  14. Breakthroughs in Low-Profile Leaky-Wave HPM Antennas

    Science.gov (United States)

    2016-06-21

    practical analytic approaches capable of addressing true 3D geometries of interest. During the third quarter, we explored channel-to-channel coupling...Antennas,” a 37-month Basic Research effort sponsored by the US Office of Naval Research (ONR). This work includes fundamental theoretical...formalism itself is still valid, but offers reduced practical rewards once an initial (i.e., not fully-optimized) geometry (e.g., grill, window

  15. Husserl's Illumination of the Breakthrough of Logical Investigations

    African Journals Online (AJOL)

    denise

    Himanka, 2005b.) When Husserl characterises his view on evidence in his work towards the second edition of the Sixth. Investigation, he notices that he has already outlined a view on fulfilment in ..... and considers the many ways of sensing one's.

  16. GENETICALLY MODIFIED FOODS: TECHNOLOGICAL BREAKTHROUGH OR ECOLOGICAL NIGHMARE?

    Science.gov (United States)

    Fifty years ago, Wastson and Crick described the structure of DNA, setting the stage for the past decade's biotechnology revolution. Scientists have now broken the code of the entire human genome, and delineated the function of multiple genes; similar strides are being taken with...

  17. Genome editing: the breakthrough technology for inherited retinal disease?

    Science.gov (United States)

    Smith, Andrew J; Carter, Stephen P; Kennedy, Breandán N

    2017-10-01

    Genetic alterations resulting in a dysfunctional retinal pigment epithelium and/or degenerating photoreceptors cause impaired vision. These juxtaposed cells in the retina of the posterior eye are crucial for the visual cycle or phototransduction. Deficits in these biochemical processes perturb neural processing of images capturing the external environment. Notably, there is a distinct lack of clinically approved pharmacological, cell- or gene-based therapies for inherited retinal disease. Gene editing technologies are rapidly advancing as a realistic therapeutic option. Areas covered: Recent discovery of endonuclease-mediated gene editing technologies has culminated in a surge of investigations into their therapeutic potential. In this review, the authors discuss gene editing technologies and their applicability in treating inherited retinal diseases, the limitations of the technology and the research obstacles to overcome before editing a patient's genome becomes a viable treatment option. Expert opinion: The ability to strategically edit a patient's genome constitutes a treatment revolution. However, concerns remain over the safety and efficacy of either transplanting iPSC-derived retinal cells following ex vivo gene editing, or with direct gene editing in vivo. Ultimately, further refinements to improve efficacy and safety profiles are paramount for gene editing to emerge as a widely available treatment option.

  18. The solarPACES strategy for the solar thermal breakthrough

    International Nuclear Information System (INIS)

    Burch, G.D.; Grasse, W.

    1997-01-01

    IEA(International Energy Agency)/SolarPACES(Solar Power and Chemical Energy systems)represents a world wide coalition for information sharing and collaboration on applications of concentrated solar energy. The current SolarPACES community has built up solar thermal system know-how over 15 years, is operating the three main solar test centres in the world. Its main activities are in the following four fields: solar thermal electric power systems, solar chemistry, solar technology and advanced applications and non-technical activities. The article presents the talk on the strategy of solarPACES given at the International Workshop on applied solar energy held in Tashkent(Uzbekistan) in June 1997. (A.A.D.)

  19. Competitive Funding, Citation Regimes, and the Diminishment of Breakthrough Research

    Science.gov (United States)

    Young, Mitchell

    2015-01-01

    At first glance Sweden looks like a researcher's paradise with high levels of GDP investment in research and high scores on citation indexes, yet recent studies have suggested that Sweden might be losing its edge in groundbreaking research. This paper explores why that is happening by examining researchers' logics of decision-making at a large…

  20. Power to gas. The final breakthrough for the hydrogen economy?

    Energy Technology Data Exchange (ETDEWEB)

    Winkler-Goldstein, Raphael [Germany Trade and Invest (GTAI), Paris (France); Rastetter, Aline [Alphea Hydrogene, Forbach (France)

    2013-04-01

    In Germany more than 20% of the energy mix is made up of renewable energy and its share is rapidly increasing. The federal government expects renewables to account for 35% of Germany's electricity consumption by 2020, 50% by 2030 and 80% by 2050. According to the German Energy Agency, multi-billion euro investments in energy storage are expected by 2020 in order to reach these goals. The growth of this fluctuating energy supply has created demand for innovative storage options in Germany and it is accelerating the development of technologies in this field. Along with batteries and smart grids, hydrogen is expected to be one of the lead technologies. 2010 a commercialization roadmap for wind hydrogen was set up by the two northern federal states of Hamburg and Schleswig-Holstein with the goal of utilizing surplus wind power for the electrolytic production of hydrogen. With the creation of the 'performing energy initiative', 2011, Brandenburg and Lower Saxony joined this undertaking. The aim of this initiative is to set up demonstration projects in order to develop and optimize wind-hydrogen hybrid systems and prepare their commercialization for the time after 2020. Beside the conversion of hydrogen into electricity and fuel for cars, further markets like raw material for the chemical, petrochemical, metallurgy and food industry are going to be addressed. Considering the fact there are over 40 caves currently used for natural gas storage with a total volume of 23.5 billion cubic meters and 400 000 km gas grid available in Germany, the German Technical and Scientific Association for Gas and Water sees opportunities for hydrogen to be fed into the existing natural gas grid network. The name of this concept is power-to-gas. According to the current DVGW-Standards natural gas in Germany can contain up to 5% hydrogen. The GERG, European Group on the Gas Research sees potential to increase this amount up to 6% to 20%. Power-to-gas could serve both for fuel and for the storage of extra energy produced by renewable sources. The hydrogen produced via electrolysis could be drawn upon - directly or as synthetic natural gas (SNG) in a second additional methanation process step - to provide electricity by means of CCGT (combined cycle gas turbines) or CHP (combined heat and power) using for example fuel cells. It could also address the industrial and household heat market. DVGW is furthermore participating in the 'Power-to-Gas Platform' that was set up in 2012 by the German Energy Agency, bringing together RnD institutes, renewable energy project developers and park operators, utilities, underground storage providers in order to create political support for this new technology. Demonstration projects will be completed by 2020 in order to develop business models (for storage, production and trade of 'green gas') and devices (electrolysers, turbines, smart gas metering, compressors, storage capacities amongst others) to enable the implementation of this concept on a broad scale. This means that a multitude of industrial players will be involved in the changes that will occur in the value chain: utilities (electricity, gas), power technology companies, car makers, heating device manufacturers, but also manufacturers of measurement, regulation and control devices, suppliers of the biogas and methanation industry. Germany is the pioneer in this field. This technology however increasingly interests its neighbours, with project developments in France, Italy, Spain, and UK but also in North America and North Africa. Germany can contribute its valuable experience (e.g. legal framework for power-to-gas) to the development of these industries. German participants in demonstration projects in these countries could for example be renewable energy park operators, RnD institutes and suppliers. (orig.)

  1. Cigarette Smoke Cadmium Breakthrough from Traditional Filters: Implications for Exposure

    Science.gov (United States)

    Pappas, R. Steven; Fresquez, Mark R.; Watson, Clifford H.

    2015-01-01

    Cadmium, a carcinogenic metal, is highly toxic to renal, skeletal, nervous, respiratory, and cardiovascular systems. Accurate and precise quantification of mainstream smoke cadmium levels in cigarette smoke is important because of exposure concerns. The two most common trapping techniques for collecting mainstream tobacco smoke particulate for analysis are glass fiber filters and electrostatic precipitators. We observed that a significant portion of total cadmium passed through standard glass fiber filters that are used to trap particulate matter. We therefore developed platinum traps to collect the cadmium that passed through the filters and tested a variety of cigarettes with different physical parameters for quantities of cadmium that passed though the filters. We found less than 1% cadmium passed through electrostatic precipitators. In contrast, cadmium that passed through 92 mm glass fiber filters on a rotary smoking machine was significantly higher, ranging from 3.5% to 22.9% of total smoke cadmium deliveries. Cadmium passed through 44 mm filters typically used on linear smoking machines to an even greater degree, ranging from 13.6% to 30.4% of the total smoke cadmium deliveries. Differences in the cadmium that passed through from the glass fiber filters and electrostatic precipitator could be explained in part if cadmium resides in the smaller mainstream smoke aerosol particle sizes. Differences in particle size distribution could have toxicological implications and could help explain the pulmonary and cardiovascular cadmium uptake in smokers. PMID:25313385

  2. Breakthrough! 100 astronomical images that changed the world

    CERN Document Server

    Gendler, Robert

    2015-01-01

    This unique volume by two renowned astrophotographers unveils the science and history behind 100 of the most significant astronomical images of all time. The authors have carefully selected their list of images from across time and technology to bring to the reader the most relevant photographic images spanning all eras of modern astronomical history.    Based on scientific evidence today we have a basic notion of how Earth and the universe came to be. The road to this knowledge was paved with 175 years of astronomical images acquired by the coupling of two revolutionary technologies – the camera and telescope. With ingenuity and determination humankind would quickly embrace these technologies to tell the story of the cosmos and unravel its mysteries.   This book presents in pictures and words a photographic chronology of our aspiration to understand the universe. From the first fledgling attempts to photograph the Moon, planets, and stars to the marvels of orbiting observatories that record the cosmos a...

  3. VITAMIN D3: RESEARCH BREAKTHROUGHS AND THERAPEUTIC USE

    Directory of Open Access Journals (Sweden)

    Pohorila М.S.

    2017-12-01

    Full Text Available Vitamin D3 (cholecalciferol, the natural form of vitamin D, is produced in the skin from 7-dehydrocholesterol. The synthesis of vitamin D in the skin is the most important source of vitamin D. Vitamin D can also be taken through nutrition, in the diet, but it is present in only a few food sources, containing relevant levels of vitamin D. 1,25-dihydroxyvitamin D3 [1,25(OH2D3] is the hormonally active form of vitamin D. Novel researches show it generates a number of extraskeletal biological responses including inhibition of variety types cancer progression, effects on cardiovascular disorders and mediates a protection against a number of inflammatory, autoimmune and infection diseases The biological actions of 1,25(OH2D3 are mediated by the VDR. The genomic mechanism of 1,25(OH2D3 action involves the direct binding of 1,25(OH2D3 activated VDR/RXR to specific DNA sequences in and around target genes resulting in either activation or repression of transcription [7] VDR modulates the expression of genes involved in immune function and cytokine production. The VDR and CYP27B1, the enzyme located in kidneys and target organs, are present in immune competent cells, bronchial and pulmonary epithelial cells, among others, and is up-regulated following the ligation of specific toll-like receptors by extracellular pathogens, implicating vitamin D in innate immunity. By binding the VDR, calcitriol induces several endogenous antimicrobial peptides (AMP in monocytes, neutrophils and epithelial cells including cathelicidin LL-37, α-defensin, β defensing and neutrophil gelatinase-associated lipocalin and up-regulates nitric oxide (NO synthase. Since the inflammatory response associated with infections such influenza, pneumonia and sepsis increases both clinical severity and mortality, the ability to reduce inflammation may allow vitamin D to decrease mortality and disease burden in certain infections. Notwithstanding the width of possible vitamin D application field, which being known now, large-scale clinical trials are still demanded. Our review has the aim to summarize current scientific understanding of Vitamin D3 effects on the immunological field with the focus on its capacity to enhance the anti-infection and anti-inflammatory immune reactivity. Vitamin D and Tuberculosis. Vitamin D has been widely studied in the prevention and treatment of tuberculosis. Current studies were focused on how calcitriol enhances the antimicrobial effects of macrophages and monocytes – important effector cells, fighting against pathogens such as Mycobacterium tuberculosis (MBT. Several studies tracked the impact of vitamin D on cytokines that promote anti-MTB activity and the resolution of infection. Suppression of antigen-stimulated pro-inflammatory cytokines, attenuation of anti-inflammatory cytokines, and a more rapid treatment-induced resolution of lymphopenia and monocytosis associated with TB infection occurred following 100,000 IU doses of vitamin D3 given monthly for 4 months. Conversion of sputum smear or sputum culture was used to measure response to treatment in several studies, though only sputum culture conversion is independently linked to long-term risk of treatment failure and relapse. Also it was found that 10,000 IU of vitamin D3 given daily for 6 weeks to significantly increase sputum smear conversion (100 % in the treatment group vs. 76,7 % in the placebo group, p=0,002. IFN-γ levels were impacted variably: 2 doses of vitamin D3 (600,000 IU led to increasing of IFN-γ expression , while a single 100,000 IU dose of vitamin D2 showed no change . Negative results in some studies could be explained by variability of the Taq1 vitamin D receptor genotype polymorphism. It was shown that significantly accelerated conversion is appropriate of patients who have a tt genotype compared to those with the Tt or TT genotype. But these results were not confirmed by another study, where were founded no interaction between VDR genotype effectiveness of vitamin D. Several trials show vitamin D given largely as an adjunctive therapy with traditional anti-tuberculosis regimens in a variety of dose and dosing schedule has some impact on clearance of MBT from sputum in the wide number randomized controlled multicenter trials of patients with active tuberculosis infection. Patients with infection of MBT with different strains of tuberculosis can take benefits from Vitamin D3 consumption due to its effect on the clearance of MTB from sputum and on dampening the inflammatory response or anthropometric changes that may help tuberculosis patients recover. A significant microbiologic effect of vitamin D3 was indicated in several trials that, also, sustained by in vitro tests, where its antimycobacterial effects in cultured macrophages was shown. Antimycobacterial effect is provided enhances the expression of the anti-microbial peptide human cathelicidin (hCAP18 in cultured macrophages. The clinical benefit after high vitamin D3 doses administrating to patients does not depend of their vitamin D3 marked deficiency. The cause of this variation remains unexplained. The role of genetic polymorphisms in the vitamin D receptor, or in the multiple enzymes involved in its metabolism in vitD3 effectiveness remains unproved. Measurement of calcitriol-induced antimycobacterial activity in ex vivo whole blood culture in future studies may help in understanding the functional effects of specific genetic polymorphisms. So, big attention will be required in future studies to determine mechanism of vitamin effect on patients with tuberculosis.

  4. Educating Both Halves of the Brain: Educational Breakthrough or Neuromythology?

    Science.gov (United States)

    Hardyck, Curtis; Haapanen, Randy

    1979-01-01

    Evidence gathered from commissurotomy (split-brain) patients and right-hemisphere/left-hemisphere studies on normal intact humans is reviewed and evaluated. Concludes that right-left hemisphere differences reported in normal subjects are small and that there is no scientific basis for any reorganization of curricular, teaching, or testing…

  5. Spray sealing: A breakthrough in integral fuel tank sealing technology

    Science.gov (United States)

    Richardson, Martin D.; Zadarnowski, J. H.

    1989-11-01

    In a continuing effort to increase readiness, a new approach to sealing integral fuel tanks is being developed. The technique seals potential leak sources by spraying elastomeric materials inside the tank cavity. Laboratory evaluations project an increase in aircraft supportability and reliability, an improved maintainability, decreasing acquisition and life cycle costs. Increased usable fuel volume and lower weight than conventional bladders improve performance. Concept feasibility was demonstrated on sub-scale aircraft fuel tanks. Materials were selected by testing sprayable elastomers in a fuel tank environment. Chemical stability, mechanical properties, and dynamic durability of the elastomer are being evaluated at the laboratory level and in sub-scale and full scale aircraft component fatigue tests. The self sealing capability of sprayable materials is also under development. Ballistic tests show an improved aircraft survivability, due in part to the elastomer's mechanical properties and its ability to damp vibrations. New application equipment, system removal, and repair methods are being investigated.

  6. A Private College's Professors Try for a Unionizing Breakthrough.

    Science.gov (United States)

    Leatherman, Courtney

    2000-01-01

    Describes faculty's efforts to unionize at Sage Colleges in Troy, New York, including legal hurdles (the Supreme Court's decision in National Labor Relations Board v. Yeshiva University), reasons cited by faculty for the union effort, and administrative reaction. (EV)

  7. Breakthroughs in Low-Profile Leaky-Wave HPM Antennas

    Science.gov (United States)

    2016-03-21

    Monitor) Lee Mastroianni a. REPORT Unclassified b. ABSTRACT Unclassified c. THIS PAGE Unclassified SAR ___ 19b. TELEPHONE NUMBER(incl. area ...Figure 4. Dielectric (PE)-filling and resizing of the compensating structure reduces its size, but it is still very large. Also, impedance-mismatch issues...analyses are non-trivial; suffice to say, there is still much work to be done in this area . During the fourth quarter, we continued to study and employ

  8. Modern Breakthrough Technologies Enable New Applications Based on IMU Systems

    Directory of Open Access Journals (Sweden)

    Nunzio Abbate

    2011-01-01

    Full Text Available This paper describes IMU (Inertial Measurement Unit platforms and their main target applications with a special focus on the 10-degree-of-freedom (10-DOF inertial platform iNEMO and its technical features and performances. The iNEMO module is equipped with a 3-axis MEMS accelerometer, a 3-axis MEMS gyroscope, a 3-axis MEMS magnetometer, a pressure sensor, and a temperature sensor. Furthermore, the Microcontroller Unit (MCU collects measurements by the sensors and computes the orientation through a customized Extended Kalman Filter (EKF for sensor fusion.

  9. The Polytechnic Breakthrough in Denmark 1780-1930

    DEFF Research Database (Denmark)

    Wagner, Michael

    2006-01-01

    to the beginning of the 19th century. The analysis is focused on the political construction of the Danish polytechnic Institute and the development in engineering discourse in the period 1830-1930. The ideological changes in the discourse are considered an political effect of the second Industrial Revolution...

  10. Gene therapy, early promises, subsequent problems, and recent breakthroughs.

    Science.gov (United States)

    Razi Soofiyani, Saeideh; Baradaran, Behzad; Lotfipour, Farzaneh; Kazemi, Tohid; Mohammadnejad, Leila

    2013-01-01

    Gene therapy is one of the most attractive fields in medicine. The concept of gene delivery to tissues for clinical applications has been discussed around half a century, but scientist's ability to manipulate genetic material via recombinant DNA technology made this purpose to reality. Various approaches, such as viral and non-viral vectors and physical methods, have been developed to make gene delivery safer and more efficient. While gene therapy initially conceived as a way to treat life-threatening disorders (inborn errors, cancers) refractory to conventional treatment, to date gene therapy is considered for many non-life-threatening conditions including those adversely influence on a patient's quality of life. Gene therapy has made significant progress, including tangible success, although much slower than was initially predicted. Although, gene therapies still at a fairly primitive stage, it is firmly science based. There is justifiable hope that with enhanced pathobiological understanding and biotechnological improvements, gene therapy will be a standard part of clinical practice within 20 years.

  11. Gene Therapy, Early Promises, Subsequent Problems, and Recent Breakthroughs

    Directory of Open Access Journals (Sweden)

    Saeideh Razi Soofiyani

    2013-08-01

    Full Text Available Gene therapy is one of the most attractive fields in medicine. The concept of gene delivery to tissues for clinical applications has been discussed around half a century, but scientist’s ability to manipulate genetic material via recombinant DNA technology made this purpose to reality. Various approaches, such as viral and non-viral vectors and physical methods, have been developed to make gene delivery safer and more efficient. While gene therapy initially conceived as a way to treat life-threatening disorders (inborn errors, cancers refractory to conventional treatment, to date gene therapy is considered for many non–life-threatening conditions including those adversely influence on a patient’s quality of life. Gene therapy has made significant progress, including tangible success, although much slower than was initially predicted. Although, gene therapies still at a fairly primitive stage, it is firmly science based. There is justifiable hope that with enhanced pathobiological understanding and biotechnological improvements, gene therapy will be a standard part of clinical practice within 20 years.

  12. Enterprise systems security management: a framework for breakthrough protection

    Science.gov (United States)

    Farroha, Bassam S.; Farroha, Deborah L.

    2010-04-01

    Securing the DoD information network is a tremendous task due to its size, access locations and the amount of network intrusion attempts on a daily basis. This analysis investigates methods/architecture options to deliver capabilities for secure information sharing environment. Crypto-binding and intelligent access controls are basic requirements for secure information sharing in a net-centric environment. We introduce many of the new technology components to secure the enterprise. The cooperative mission requirements lead to developing automatic data discovery and data stewards granting access to Cross Domain (CD) data repositories or live streaming data. Multiple architecture models are investigated to determine best-of-breed approaches including SOA and Private/Public Clouds.

  13. Breakthroughs in Low Profile Leaky Wave HPM Antennas

    Science.gov (United States)

    2016-10-17

    lambda = c_const/f; % free space wavelength lambdap = lambda /ct; % lambda prime, for aperture Y computations . k0 = 2.0*pi*f/c_const; %incident k...2.99792458e8; %c in m/s lambda = c_const/f; % free space wavelength lambdap = lambda /ct; % lambda prime, for aperture Y computations . k0 = 2.0*pi...a*ct/ lambda )^2)-1/m; end % Normalized to Z0 = 1 everywhere % Compute Xa using sum from Marcuvitz, p. 286 Xa = (a*ct/ lambda

  14. Economical and geopolitical aspects bond to the foreseen development of the natural gas in an open market; Aspects economiques et geopolitiques lies au developpement prevu du gaz naturel dans un marche ouvert

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-12-15

    For the first time in 2000, the part of natural gas is equal to those of coal in the world energy accounting. The economy and the geo-policy of this developing energy is analyzed, showing an economy dominated by the transport costs, the specificity of the european sector and the opening market since 1980. The european market opening incertitudes and opportunities are detailed. In conclusion the Gaz De France role in the european energy pole and the new regulations are discussed. (A.L.B.)

  15. Interferon-alpha in the treatment of Philadelphia-negative chronic myeloproliferative neoplasms. Status and perspectives

    DEFF Research Database (Denmark)

    Hasselbalch, H.C.; Larsen, T.S.; Riley, C.H.

    2011-01-01

    The Philadelphia-negative chronic myeloproliferative neoplasms encompass essential thrombocythemia (ET), polycythemia vera (PV) and primary myelofibrosis (PMF). A major break-through in the understanding of the pathogenesis of these neoplasms occurred in 2005 by the discovery of the JAK2 V617F mu...... and potentially cure after long-term immune therapy with IFN-alpha2 is discussed and foreseen as an achievable goal in the future....

  16. Decarbonising the Hungarian Electricity and Heat Sectors: What Is the Least impossible?

    International Nuclear Information System (INIS)

    Kaderjak, P.

    2012-01-01

    The presentation will report on an economic assessment of decarbonisation scenarios for the Hungarian electricity and heat sectors by 2050. The assessment is based on economic modeling that assumes an expanding application of existing technologies. The results suggest that CO 2 abatement in the heat sector might be a cheaper and more realistic option for decarbonisation in the Hungarian case. With regard to the electricity sector, decarbonisation foreseen in the Commission's 2050 vision (90-95%) is not feasible without a massive application of CCS technology or without a non-foreseeable technology breakthrough.(author)

  17. Break-through in seed fertility of autotetraploid Trigonella foenum graecum

    International Nuclear Information System (INIS)

    Raghuvanshi, S.S.; Agrawal, Poonam; Singh, Jaya; Singh, Anil K.

    1990-01-01

    Full text: Fenugreek is an important legume crop in tropical and subtropical zones of India, used as green vegetable, cattle fodder, food flavourant and for pharmaceutical purposes. The seeds are a source of diosgenin, a steroid sapogenin used for synthesis of steroidal drugs like corticosteroide sex hormone and oral contraceptives. Seeds valuing 15-20 million rupees are exported annually. Polyploids are vegetatively superior but have poorer seed fertility. Cross breeding among locally collected germplasm and autopolyploidisation did not give satisfactory results. Mutation induction using gamma rays or EMS alone and in combination was undertaken to broaden the variability for increased grain yield. In M 3 , mutants were selected with up to 143 pods per plant, compared to 80 in the diploid progenitors and up to 123 In advanced hybrids. 11 promising high yielding lines will be further evaluated. (author)

  18. Physicists get first glimpse of antimatter: Stuff of science fiction: Canadian among group making breakthrough

    CERN Multimedia

    Munro, M

    2002-01-01

    "A team of Canadian, U.S. and European physicists, working at the CERN physics facility in Geneva, is reporting in Physical Review Letters this week that it has created and probed atoms of antihydrogen" (1 page).

  19. Ordovician gas exploration breakthrough in the Gucheng lower uplift of the Tarim Basin and its enlightenment

    OpenAIRE

    Zhaoming, Wang; Haijun, Yang; Yingmin, Qi; Yongquan, Chen; Yanlong, Xu

    2014-01-01

    A steady high yield natural gas flow was tapped in the Ordovician strata of Well Gucheng 6 drilled in the Gucheng lower uplift in the Tarim Basin in 2012, marking the discovery of another carbonate gas exploration field after the other two fields in the middle and northern Tarim Basin (the so called Tazhong and Tabei in the industry). The exploration in the Gucheng lower uplift has experienced three stages: the first stage, marine facies clastic exploration from 1995 to 2003, focusing on the ...

  20. How Modern Science Came into the World : Four Civilizations, One 17th-Century Breakthrough

    NARCIS (Netherlands)

    Cohen, H. Floris

    2010-01-01

    Floris Cohen vernieuwt in How Modern Science Came into the World het begrip ‘de Wetenschappelijke Revolutie van de zeventiende eeuw’ radicaal. Hij vertelt het verhaal op een manier die van de grond af opnieuw is doordacht. Een beschavingsbrede aanpak, consequent volgehouden vergelijkingen en een

  1. Proposal and technological breakthrough of an integrated system for the complete usage of sea water

    International Nuclear Information System (INIS)

    Ohya, Haruhiko; Suzuki, Takashi; Nakao, Shin-ichi; Kato, Shigeru; Tsuji, Masamichi; Sugi, Jiro.

    1996-01-01

    Serious troubles regarding scale formation may occur when the amount of recovered water from sea water increases. The main constituents of the scale are CaCO 3 , Mg(OH) 2 , CaSO 4 and so on, all of which are salts of alkaline earth metals. Therefore, if a key technology is developed with which the main constituents of the scale, alkaline earth metal ions such as CaCO 3 , Mg(OH) 2 , CaSO 4 and so on, can be removed and/or separated from sea water the recovery of desalted water from raw sea water using high-pressure reverse osmosis (HPRO) can be increased up to 75-80%, the solubility limit of the remaining scale components. Then it will be possible to make use of all valuable materials that exist in sea water, using an integrated system that combines conventional recovery technologies with a set of the proposed technologies such as HPRO, an alkaline earth metal ions removal process, inorganic ion exchangers for recovering trace elements and so on. Furthermore, almost complete utilization of sea water may be accomplished by using of the brackish water by product for salt-resistant plants such as mangrove, salt bush and, if possible, gene-recombinated plants. (author)

  2. Beauty and the Biologic: Artistic Documentation of Scientific Breakthrough in Psoriasis.

    Science.gov (United States)

    Maul, Julia-Tatjana; Carraro, Sabina; Stierlin, Johanna; Geiges, Michael L; Navarini, Alexander A

    2015-01-01

    The making of wax moulages was an exclusive and sought-after art that was primarily used for teaching, but also to document clinical and laboratory research during the first half of the 20th century. Applying the technique of moulage-making to document a case of psoriasis improvement for posterity, a moulage of the trunk of a patient with psoriasis vulgaris was taken prior to treatment with biologics - adalimumab, a TNF-α antagonist - and again 3 month after adalimumab was first given. Our modern moulage shows in the most realistic way the science-driven improvement of psoriasis achievable nowadays with biologics. However, the real clinical picture of the disease is shrouded by showing only one detail of the patient - by accident the one with the best clinical improvement. All available techniques to document skin disease have advantages and limitations and nothing beats seeing live patients.

  3. Fossil scandal. 18 proposals for a green breakthrough; Fossiel schandaal. 18 voorstellen voor een groene doorbraak

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-02-15

    In 2011, the Dutch political party GroenLinks called on the tax payers to nominate examples of subsidies for fossil energy as fossil scandal. A total of nearly 100 responses were received. An expert jury was asked to select the best examples. The jury drew up a top 18 of measures that they considered inappropriate for a mature economy and which should be abolished first [Dutch] In 2011 heeft de politieke partij GroenLinks een oproep gedaan aan belastingbetalers om voorbeelden van subsidies voor fossiele energie te nomineren als fossiel schandaal. In totaal werden bijna 100 reacties ontvangen. Een deskundige jury is gevraagd om de beste voorbeelden te selecteren. De jury heeft een top 18 gemaakt van maatregelen die volgens hen niet passen in een volwassen economie en die als eerste zouden moeten worden afgeschaft.

  4. Mapping the Limitations of Breakthrough Analysis in Fixed-Bed Adsorption

    Science.gov (United States)

    Knox, James Clinton

    2017-01-01

    The separation of gases through adsorption plays an important role in the chemical processing industry, where the separation step is often the costliest part of a chemical process and thus worthy of careful study and optimization. This work developed a number of new, archival aspects on the computer simulations used for the refinement and design of these gas adsorption processes: 1. Presented a new approach to fit the undetermined heat and mass transfer coefficients in the axially dispersed plug flow equation and associated balance equations 2. Examined and described the conditions where non-physical simulation results can arise 3. Presented an approach to determine the limits of the axial dispersion and LDF mass transfer terms above which non-physical simulation results occur.

  5. InCoB2012 Conference: from biological data to knowledge to technological breakthroughs.

    Science.gov (United States)

    Schönbach, Christian; Tongsima, Sissades; Chan, Jonathan; Brusic, Vladimir; Tan, Tin Wee; Ranganathan, Shoba

    2012-01-01

    Ten years ago when Asia-Pacific Bioinformatics Network held the first International Conference on Bioinformatics (InCoB) in Bangkok its theme was North-South Networking. At that time InCoB aimed to provide biologists and bioinformatics researchers in the Asia-Pacific region a forum to meet, interact with, and disseminate knowledge about the burgeoning field of bioinformatics. Meanwhile InCoB has evolved into a major regional bioinformatics conference that attracts not only talented and established scientists from the region but increasingly also from East Asia, North America and Europe. Since 2006 InCoB yielded 114 articles in BMC Bioinformatics supplement issues that have been cited nearly 1,000 times to date. In part, these developments reflect the success of bioinformatics education and continuous efforts to integrate and utilize bioinformatics in biotechnology and biosciences in the Asia-Pacific region. A cross-section of research leading from biological data to knowledge and to technological applications, the InCoB2012 theme, is introduced in this editorial. Other highlights included sessions organized by the Pan-Asian Pacific Genome Initiative and a Machine Learning in Immunology competition. InCoB2013 is scheduled for September 18-21, 2013 at Suzhou, China.

  6. Nano-biotechnology breakthrough and food-packing industry- A Review

    Directory of Open Access Journals (Sweden)

    Helmy EA

    2016-12-01

    Full Text Available Nanobiotechnology has been renowned as extremely essential scientific and industrialized advancements that have the actual ability to renovate virtually each feature of lifetimes and economy. Chemical and physical methods for the synthesis of nanoparticles are the common approaches, but their use is limited because they are costly and harmful to the environment. In this method, the biological systems such as bacteria, fungi, plants were used to transform the organic metal into metal nanoparticles via the reactive capacity of proteins and metabolites present in these organisms. The biogenic synthesis using biological routes especially fungal pathways is, therefore, the best choice. The use of fungi in the green synthesis of metal nanoparticles has been reported in several promising studies, since fungi contain enzymes and proteins as reducing agents and can be invariably used for the synthesis of metal nanoparticles from their salts. Generally, microbial nanobiotechnology can adapt of packaging stuff, rising barrier characteristics, refining mechanical and heat-resistance, evolving functioning antimicrobial exteriors, and generates nano-biodegradable packaging stuffs. Improving intelligent packaging to elevate the nutritional goods validity timing via nanobiotechnology became the ambition of many corporations. This review will focus on tremendous benefits of nanobiotechnology in nutrition trade concerning Foodstuff Wrapping systems and materials. Such packaging (wrapping structures would be able to fix minor holes/tears, react to ecological conditions as temperature and/or moisture changes and attentive the client if the food is spoiled. Nanobiotechnology has utilized in inventive improvement of biosensors for recognition of pathogens and chemical pollutants. Elaboration of food analytical approaches for the uncovering of tiny aggregates of a chemical and/or any microbial pollutant during food processing is an extra prospective practice of nanobiotechnology. This will leads to further safety for the food handling approaches.

  7. Learning the Language of Dogs Can Be a Breakthrough Experience for Children with Autism

    Science.gov (United States)

    Santo, Kathy

    2008-01-01

    Becoming a professional dog trainer and working with kids and their dogs showed the author all the evidence she ever needed to see that dogs and kids were meant to be together, and that the right pairing of child to dog (coupled with proper training in obedience and mutual respect) yielded amazing results inside as well as outside their obedience…

  8. Breakthroughs in the spasticity management: Are non-pharmacological treatments the future?

    Science.gov (United States)

    Naro, Antonino; Leo, Antonino; Russo, Margherita; Casella, Carmela; Buda, Antonio; Crespantini, Aurelio; Porcari, Bruno; Carioti, Luigi; Billeri, Luana; Bramanti, Alessia; Bramanti, Placido; Calabrò, Rocco Salvatore

    2017-05-01

    The present paper aims at providing an objective narrative review of the existing non-pharmacological treatments for spasticity. Whereas pharmacologic and conventional physiotherapy approaches result well effective in managing spasticity due to stroke, multiple sclerosis, traumatic brain injury, cerebral palsy and incomplete spinal cord injury, the real usefulness of the non-pharmacological ones is still debated. We performed a narrative literature review of the contribution of non-pharmacological treatments to spasticity management, focusing on the role of non-invasive neurostimulation protocols (NINM). Spasticity therapeutic options available to the physicians include various pharmacological and non-pharmacological approaches (including NINM and vibration therapy), aimed at achieving functional goals for patients and their caregivers. A successful treatment of spasticity depends on a clear comprehension of the underlying pathophysiology, the natural history, and the impact on patient's performances. Even though further studies aimed at validating non-pharmacological treatments for spasticity should be fostered, there is growing evidence supporting the usefulness of non-pharmacologic approaches in significantly helping conventional treatments (physiotherapy and drugs) to reduce spasticity and improving patient's quality of life. Hence, non-pharmacological treatments should be considered as a crucial part of an effective management of spasticity. Copyright © 2017 Elsevier Ltd. All rights reserved.

  9. Malaria vaccine R&D in the Decade of Vaccines: breakthroughs, challenges and opportunities.

    Science.gov (United States)

    Birkett, Ashley J; Moorthy, Vasee S; Loucq, Christian; Chitnis, Chetan E; Kaslow, David C

    2013-04-18

    While recent progress has been made in reducing malaria mortality with other interventions, vaccines are still urgently needed to further reduce the incidence of clinical disease, including during pregnancy, and to provide "herd protection" by blocking parasite transmission. The most clinically advanced candidate, RTS,S, is presently undergoing Phase 3 evaluation in young African children across 13 clinical sites in eight African countries. In the 12-month period following vaccination, RTS,S conferred approximately 50% protection from clinical Plasmodium falciparum disease in children aged 5-17 months, and approximately 30% protection in children aged 6-12 weeks when administered in conjunction with Expanded Program for Immunization (EPI) vaccines. The development of more highly efficacious vaccines to prevent clinical disease caused by both P. falciparum and Plasmodium vivax, as well as vaccines to support elimination efforts by inducing immunity that blocks malaria parasite transmission, are priorities. Some key barriers to malaria vaccine development include: a paucity of well-characterized target immunogens and an absence of clear correlates of protection to enable vaccine development targeting all stages of the P. falciparum and P. vivax lifecycles; a limited number of safe and effective delivery systems, including adjuvants, that induce potent, long-lived protective immunity, be it by antibody, CD4+, and/or CD8+ T cell responses; and, for vaccines designed to provide "herd protection" by targeting sexual stage and/or mosquito antigens, the lack of a clear clinical and regulatory pathway to licensure using non-traditional endpoints. Recommendations to overcome these, and other key challenges, are suggested in this document. Copyright © 2013 Elsevier Ltd. All rights reserved.

  10. Targeting the endoplasmic reticulum in prion disease treatment: breakthroughs and challenges

    Directory of Open Access Journals (Sweden)

    Kanemoto S

    2015-01-01

    Full Text Available Soshi Kanemoto Department of Biochemistry, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan Abstract: Prion diseases are infectious, predominantly fatal neurodegenerative diseases characterized by abnormal prion protein (PrP accumulation and neuronal loss. Studies on experimental animal models and clinical features of human prion diseases have shown unfolded PrP accumulation results in endoplasmic reticulum (ER stress. While ER stress-mediated apoptosis is responsible for neuronal loss in prion diseases, ER stress also activates the unfolded protein response (UPR in an effort to restore ER homeostasis. Of the UPR signaling pathways, the PERK-eIF2α pathway is implicated in the pathogenesis of prion diseases. The proteasome protein degradation system is also activated during the UPR. Increasing evidence indicates that proteasome and autophagy activities are affected in prion diseases. These findings suggest that ER stress/UPR contributes to the onset of prion diseases. Hence, strategies that target the ER are useful approaches in treating prion diseases. Additionally, immunotherapeutic approaches for prion diseases have been developed in recent decades. Single-chain fragment variable antibodies targeting the accumulation of PrP are also beneficial in the prevention of abnormal PrP propagation. This review discusses pathogenic mechanisms related to the ER and potential strategies for treating prion diseases. Keywords: prion, endoplasmic reticulum, unfolded protein response, therapy

  11. A breakthrough in flue gas cleanup, CO2 mitigation and H2S removal

    Energy Technology Data Exchange (ETDEWEB)

    Koch, Wolf; Wasas, James; Stenger, Raymond; Howell, Evan

    2010-09-15

    SWAPSOL Corp. is developing commercial processes around a newly discovered reaction that reduces H2S below detectable levels while reacting with CO2 to form water, sulfur and carsuls, a carbon-sulfur polymer. The Stenger-Wasas Process (SWAP) stands to simplify sulfur removal technology as it consumes CO2 in an exothermic reaction. The SWAP has applications in landfill, sour, flue and Claus tail gas cleanup and may replace Claus technology. Destruction of waste hydrocarbons provides a source of H2S. The primary reactions and variants have been independently verified and the chemical kinetics determined by a third party laboratory.

  12. High-zinc rice as a breakthrough for high nutritional rice breeding program

    Science.gov (United States)

    Barokah, U.; Susanto, U.; Swamy, M.; Djoar, D. W.; Parjanto

    2018-03-01

    WHO reported climate change already takes 150,000 casualties annually, due to the emergence of various diseases and malnutrition caused by food shortages and disasters. Rice is the staple food for almost all of Indonesian citizens, therefore Zn biofortification on rice is expected to be effective, efficient, massive, and sustainable to overcome the Zn nutritional deficiency. This study aims to identify rice with high Zn content and yield for further effort in releasing this variety. Ten lines along with two varieties as a comparison (Ciherang and Inpari 5 Merawu) were tested in Plumbon Village, Mojolaban Subdistrict, Sukoharjo Regency during February-May 2017. The experiment was designed in a Randomized Completely Block Design with four replications on a 4 m x 5 m area, with 25 cm x 25 cm plant spacing using seedling transplanting techniques of 21 days old seeds. The results showed that the plant genotypes treated had differences in yield characteristics, heading date, harvest age, panicle number, filled and un-filled grain per panicle, seed set, 1000 grains weight, Zn and Iron (Fe) content in rice grain. B13884-MR-29-1-1 line (30.94 ppm Zn, 15.84 ppm Fe, 4.11 ton/ha yield) and IR 97477- 115-1-CRB-0-SKI-1-SKI-0-2 (29.61 ppm Zn, 13.49 ppm Zn, 4.4 ton/ha yield) are prospective variety to be released. Ciherang had Zn content of 23.04 ppm, 11.93 ppm Fe, and yield of 4.07 t/ha.

  13. Three dimensional visualization breakthrough in analysis and communication of technical information for nuclear waste management

    Energy Technology Data Exchange (ETDEWEB)

    Alexander, D.H.; Cerny, B.A. [USDOE, Washington, DC (USA); Hill, E.R.; Krupka, K.M. [Pacific Northwest Lab., Washington, DC (USA); Smoot, J.L. [Pacific Northwest Lab., Richland, WA (USA); Smith, D.R.; Waldo, K. [Dynamic Graphics, Inc., Bethesda, MD (USA)

    1990-11-01

    Computer graphics systems that provide interactive display and manipulation of three-dimensional data are powerful tools for the analysis and communication of technical information required for characterization and design of a geologic repository for nuclear waste. Greater understanding of site performance and repository design information is possible when performance-assessment modeling results can be visually analyzed in relation to site geologic and hydrologic information and engineering data for surface and subsurface facilities. In turn, this enhanced visualization capability provides better communication between technical staff and program management with respect to analysis of available information and prioritization of program planning. A commercially-available computer system was used to demonstrate some of the current technology for three-dimensional visualization within the architecture of systems for nuclear waste management. This computer system was used to interactively visualize and analyze the information for two examples: (1) site-characterization and engineering data for a potential geologic repository at Yucca Mountain, Nevada; and (2) three-dimensional simulations of a hypothetical release and transport of contaminants from a source of radionuclides to the vadose zone. Users may assess the three-dimensional distribution of data and modeling results by interactive zooming, rotating, slicing, and peeling operations. For those parts of the database where information is sparse or not available, the software incorporates models for the interpolation and extrapolation of data over the three-dimensional space of interest. 12 refs., 4 figs.

  14. Russia and the Iranian Nuclear Program: Replay or Breakthrough? (Strategic Perspectives, no. 9)

    Science.gov (United States)

    2012-03-01

    soon as planning began.45 Later the same month, on the margins of the UN Climate Change Conference in Copenhagen, Ahmadinejad gratuitously slapped...One had suggested that the ultimate future counter to a nuclear Iran might have to be NATO Article 5–type guarantees by the United States, Russia, and...decisions exclude any hint of a UN Charter Chapter VII, Article 42, threat of force.3 In the view of analysts in Moscow, an Is- raeli strike could not put an

  15. Enabling breakthroughs in Parkinson's disease with wearable technologies and big data analytics.

    Science.gov (United States)

    Cohen, Shahar; Bataille, Lauren R; Martig, Adria K

    2016-01-01

    Parkinson's disease (PD) is a progressive, degenerative disorder of the central nervous system that is diagnosed and measured clinically by the Unified Parkinson's Disease Rating Scale (UPDRS). Tools for continuous and objective monitoring of PD motor symptoms are needed to complement clinical assessments of symptom severity to further inform PD therapeutic development across several arenas, from developing more robust clinical trial outcome measures to establishing biomarkers of disease progression. The Michael J. Fox Foundation for Parkinson's Disease Research and Intel Corporation have joined forces to develop a mobile application and an Internet of Things (IoT) platform to support large-scale studies of objective, continuously sampled sensory data from people with PD. This platform provides both population and per-patient analyses, measuring gait, activity level, nighttime activity, tremor, as well as other structured assessments and tasks. All data collected will be available to researchers on an open-source platform. Development of the IoT platform raised a number of engineering considerations, including wearable sensor choice, data management and curation, and algorithm validation. This project has successfully demonstrated proof of concept that IoT platforms, wearable technologies and the data they generate offer exciting possibilities for more robust, reliable, and low-cost research methodologies and patient care strategies.

  16. Distance Learning and Cloud Computing: "Just Another Buzzword or a Major E-Learning Breakthrough?"

    Science.gov (United States)

    Romiszowski, Alexander J.

    2012-01-01

    "Cloud computing is a model for the enabling of ubiquitous, convenient, and on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and other services) that can be rapidly provisioned and released with minimal management effort or service provider interaction." This…

  17. Trumpeting through the iron curtain: The breakthrough of jazz in socialist Yugoslavia

    OpenAIRE

    Vučetić Radina

    2012-01-01

    During the Cold War, jazz became a powerful propaganda weapon in the battle for “hearts and minds”. As early as the 1950s, the American administration began its Cold War “jazz campaign”, by broadcasting the popular jazz radio show Music USA over the Voice of America, and by sending its top jazz artists on world tours. In this specific cultural Cold War, Yugoslavia was, as in its overall politics, in a specific position between the East and the West. The pos...

  18. The Breakthrough Listen Search for Intelligent Life: Data Calibration using Pulsars

    Science.gov (United States)

    Brinkman-Traverse, Casey Lynn; Gajjar, Vishal; BSRC

    2018-01-01

    The ability to distinguish ET signals requires a deep understanding of the radio telescopes with which we search; therefore, before we observe stars of interest, the Breathrough Listen scientists at Berkeley SETI Research Center first observe a Pulsar with well-documented flux and polarization properties. The process of calibrating the flux and polarization is a lengthy process by hand, so we produced a pipeline code that will automatically calibrate the pulsar in under an hour. Using PSRCHIVE the code coherently dedisperses the pulsed radio signals, and then calibrates the flux using observation files with a noise diode turning on and off. The code was developed using PSR B1937+ 21 and is primarily used on PSR B0329+54. This will expedite the process of assessing the quality of data collected from the Green Bank Telescope in West Virginia and will allow us to more efficiently find life beyond Planet Earth. Additionally, the stability of the B0329+54 calibration data will allow us to analyze data taken on FRB's with confidence of its cosmic origin.

  19. The best news for LPG in Denmark is diesel conversion breakthrough

    Energy Technology Data Exchange (ETDEWEB)

    1992-12-01

    Throughout Scandanavia, taxes seem to drive the marketplace. Governments do not want to encourage consumption of alcoholic beverages, so they tax them heavily, thereby actually discouraging their use. Using the same means, they dictate the fate of the various fuels. Taxes have depressed propane's use to a large extent; today it is priced at three times natural gas, with the result that it accounts for only 0.5%-0.7% of total energy consumption. But, this paper reports on a potential new star that has appeared on the horizon, as participants in the People-to-People sojourn to Scandanavia last August learned. It's a program of converting diesel buses to propane, and officials of the company that is marketing it, Skibby Motor A/S, are so confident of its success that they have already begun a campaign of introducing it to the U.S.

  20. New nuclear package. At last a breakthrough for a European legal framework on nuclear safety?

    International Nuclear Information System (INIS)

    Schneider, Horst

    2009-01-01

    In 2003, the European Commission presented what it referred to as a nuclear package. Two draft directives were to cover nuclear safety and nuclear waste management in a legally binding sense on the level of the European Union. A separate directive on funds for decommissioning nuclear power plants and for waste management up to final storage, which had still been included in preliminary drafts in 2002, had been dropped and turned into recommendations in 2006. However, the nuclear package with the 2 draft directives found no sufficient majority in the Council in 2004. In November 2008, the Commission presented a new draft directive on nuclear safety, especially the safety of nuclear power plants. The Commission demands a European legal framework for the political acceptance of nuclear power. As far as procedures were concerned, the Commission had expressed its hope that the directive could be adopted by the summer of 2009. The draft directive has been thoroughly revised over the past four months. Shaping the European Union is a difficult matter. The improvement seems to be in the field of nuclear safety. It is to be hoped that a directive will be adopted in the end which will result in more acceptance, not just in arguments exchanged between the Commission and the member countries when it comes to transposition into national law and its execution. (orig.)

  1. Significant breakthroughs in monitoring networks of the volcanological and seismological French observatories

    Science.gov (United States)

    Lemarchand, Arnaud; Anglade, andré; Saurel, jean-marie

    2014-05-01

    In the last few years, French West Indies observatories, in collaboration with the Seismic Research Center (University of West Indies-Trinidad), have modernized the Lesser Antilles Arc seismic and deformation monitoring network. 16 new permanent stations have been installed to strengthen and expand its detection capabilities. The global network of the IPGP-SRC consortium is now composed of 21 modernized stations, all equipped with broadband seismometers, strong motion sensors, GNSS sensors and satellite communication for real-time data transfer to the observatories of Trinidad (SRC), Guadeloupe (OVSG), Martinique (OVSM). To improve the sensitivity and reduce ambient noise, special efforts were made to enhance the design of the seismic vault and the original Stuttgart shielding (D. Kurrle R. Widmer-Schnidrig, 2005) of the broadband seismometers (240 and 120 sec). Several months of tests have been performed in order to get the maximum performance level out of the seismometers with different types of shields. This renewed network feeds the Caribbean Tsunami Warning System supported by UNESCO and establishes a monitoring tool that produces high quality data for studying subduction and volcanism interactions in the Lesser Antilles arc. The project has been an opportunity to migrate the seismic data processing to SeisComP3 with new developed plugins to compute the duration magnitude and locate (modified HYPO71PC ) ever small events such as volcanic ones. The new plugins are integrated in Seiscomp3 releases. Several tools for data management and treatment (Earthworm and WebObs [Beauducel et al., 2004]) are also continuously improved. GPS data, real-time and validated seismic data (only broadband) are now available at the IPGP data center.

  2. Hendra and Nipah viruses: pathogenesis, animal models and recent breakthroughs in vaccination

    Directory of Open Access Journals (Sweden)

    Weingartl HM

    2015-09-01

    Full Text Available Hana M Weingartl National Centre for Foreign Animal Disease, Canadian Food Inspection Agency, Winnipeg, MB, Canada Abstract: Hendra and Nipah viruses are two highly pathogenic zoonotic members of the genus Henipavirus, family Paramyxoviridae, requiring work under biosafety level 4 conditions due to a lack of effective therapy and human vaccines. Several vaccine candidates were protective in animal models: recombinant vaccinia virus expressing Nipah virus (NiV F and G proteins in hamsters against NiV; recombinant ALVAC–NiV F and G in swine against NiV; recombinant Hendra virus (HeV soluble G protein (sGHeV against HeV and NiV in cats, ferrets, horses, and African green monkeys (AGM; recombinant vesicular stomatitis virus-based vectors expressing NiV F or G against NiV in hamsters and ferrets; measles virus-based NiV G vaccine candidate in hamsters and AGMs against NiV; and adenoassociated virus expressing NiG protein, which protected hamsters against NiV. The sGHeV was licensed for use in horses (Equivac HeV® in 2012. It is the first vaccine candidate licensed against a biosafety level 4 agent. With the development of suitable animal models (ferret, hamster and, importantly, AGM, progress can be made toward development of a human vaccine.Keywords: henipavirus, equine, swine, human infection, animal models, vaccine candidates

  3. New rules for transient advantage, social business, breakthrough innovation, big data and information technology

    CERN Document Server

    Randall, Robert

    2014-01-01

    Business models and processes are evolving in quicktime to take advantage of opportunities enabled by the rapid advance of digital technology. Meanwhile, the preferences of customers and the jobs they need to do are co-evolving. What's accelerating the transformation of markets is that, using digital networks, customers and other stakeholder can instantly influence the development of new offerings. As a result, upstart businesses that can connect with customers through new social channels burgeon and thrive and long-established segments suddenly wither and vanish. This book identifies several

  4. Accurate Navigation of Deep Space Probes using Multifrequency Links: the Cassini Breakthrough during Solar Conjunction Experiments

    Science.gov (United States)

    Tortora, P.; Iess, L.; Ekelund, J. E.

    2002-01-01

    (1) transponders, used for both range and range-rate estimation. These devices are characterized by a frequency stability (measured by the Allan deviation) whose typical value never falls below the limit of 10-13, which broadly reflects in a range rate accuracy of about 15.10-4 cm/s. Moreover, for missions in the ecliptic plane, a critical phase is represented by the solar conjunctions which, depending on the spacecraft trajectory, can last up to two weeks. In such conditions the radio data are inherently corrupted by solar plasma noise, which causes a dramatic decay of the obtainable navigation accuracy. As a matter of fact, in the orbit determination process, radio data collected when the line of sight falls within 40 solar radii are usually discarded, leading to long time spans during which navigation cannot rely on actual data. and 2001 solar conjunctions were removed for navigation purposes. While this strategy is widely acceptable and proven during the cruise flight, it is not recommended during critical mission phases, when frequent ground-commanded maneuvers are executed. maneuver, scheduled on July 1st 2004, a few days before a solar conjunction. A significant improvement of the navigation accuracy would be achieved using, for the Orbit Determination process, all radio data collected up to the SOI. science experiments (RSE). The on-board configuration is based on a X/X transponder, which generates a reference signal to the Ka-Band Exciter (KEX) for the X/Ka link; furthermore a coherent frequency translator (KaT) is used for the Ka/Ka link. With this configuration, the sky frequencies in the three bands (X/X, X/Ka, Ka/Ka) can be coherently combined to remove the effects of the solar plasma, the major noise source in the Doppler observable. plasma calibration scheme, has shown an improvement of a factor of 8 over the noise of the bare Ka/Ka observable and a factor of 100 over X/X data. At an impact parameter of about 25 solar radii, the Allan deviation is as low as 2.10-14 at integration times of 1000 s, offering a range rates accuracy of about 0.003 mm/s. An immediate consequence of such results is the dramatic navigation accuracy improvement which can be obtained calibrating for solar plasma the Doppler observable used by the Orbit Determination Program (ODP). discussed in detail. First, the algorithm to reconstruct the sky frequencies from wideband open loop data is illustrated and, using a simple model of the orbital dynamics, the obtained residuals are characterized in terms of Allan deviations and power spectra. We then show how the plasma calibration scheme, used to generate plasma free observable for each band, leads to a much improved signal stability and to a reduced spectral density. Using the raw and calibrated sky frequencies in the ODP, a thorough comparison is performed among the Doppler frequency residuals obtained from 1) uncalibrated X-band data, 2) uncalibrated Ka-band data, and 3) calibrated X and Ka-band data. Our results show that the plasma free observable generation allows the use of actual data in the orbit determination process, even when the S/C has an impact parameter of about 5 solar radii, well into a superior conjunction.

  5. Breakthrough Capability for the NASA Astrophysics Explorer Program: Reaching the Darkest Sky

    Science.gov (United States)

    Greenhouse, Matthew A.; Benson, Scott W.; Falck, Robert D.; Fixsen, Dale J.; Gardner, Joseph P.; Garvin, James B.; Kruk, Jeffrey W.; Oleson, Stephen R.; Thronson, Harley A.

    2012-01-01

    We describe a mission architecture designed to substantially increase the science capability of the NASA Science Mission Directorate (SMD) Astrophysics Explorer Program for all AO proposers working within the near-UV to far-infrared spectrum. We have demonstrated that augmentation of Falcon 9 Explorer launch services with a 13 kW Solar Electric Propulsion (SEP) stage can deliver a 700 kg science observatory payload to extra-Zodiacal orbit. This new capability enables up to 13X increased photometric sensitivity and 160X increased observing speed relative to a Sun- Earth L2, Earth-trailing, or Earth orbit with no increase in telescope aperture. All enabling SEP stage technologies for this launch service augmentation have reached sufficient readiness (TRL-6) for Explorer Program application in conjunction with the Falcon 9. We demonstrate that enabling Astrophysics Explorers to reach extra-zodiacal orbit will allow this small payload program to rival the science performance of much larger long development time systems; thus, providing a means to realize major science objectives while increasing the SMD Astrophysics portfolio diversity and resiliency to external budget pressure. The SEP technology employed in this study has strong applicability to SMD Planetary Science community-proposed missions. SEP is a stated flight demonstration priority for NASA's Office of the Chief Technologist (OCT). This new mission architecture for astrophysics Explorers enables an attractive realization of joint goals for OCT and SMD with wide applicability across SMD science disciplines.

  6. Breakthrough in Power Electronics from SiC: May 25, 2004 - May 31, 2005

    Energy Technology Data Exchange (ETDEWEB)

    Marckx, D. A.

    2006-03-01

    This report explores the premise that silicon carbide (SiC) devices would reduce substantially the cost of energy of large wind turbines that need power electronics for variable speed generation systems.

  7. Achieving performance breakthroughs in an HMO business process through quality planning.

    Science.gov (United States)

    Hanan, K B

    1993-01-01

    Kaiser Permanente's Georgia Region commissioned a quality planning team to design a new process to improve payments to its suppliers and vendors. The result of the team's effort was a 73 percent reduction in cycle time. This team's experiences point to the advantages of process redesign as a quality planning model, as well as some general guidelines for its most effective use in teams. If quality planning project teams are carefully configured, sufficiently expert in the existing process, and properly supported by management, organizations can achieve potentially dramatic improvements in process performance using this approach.

  8. Pollen from the Deep-Sea: A Breakthrough in the Mystery of the Ice Ages

    Directory of Open Access Journals (Sweden)

    María F. Sánchez Goñi

    2018-01-01

    Full Text Available Pollen from deep-sea sedimentary sequences provides an integrated regional reconstruction of vegetation and climate (temperature, precipitation, and seasonality on the adjacent continent. More importantly, the direct correlation of pollen, marine and ice indicators allows comparison of the atmospheric climatic changes that have affected the continent with the response of the Earth’s other reservoirs, i.e., the oceans and cryosphere, without any chronological uncertainty. The study of long continuous pollen records from the European margin has revealed a changing and complex interplay between European climate, North Atlantic sea surface temperatures (SSTs, ice growth and decay, and high- and low-latitude forcing at orbital and millennial timescales. These records have shown that the amplitude of the last five terrestrial interglacials was similar above 40°N, while below 40°N their magnitude differed due to precession-modulated changes in seasonality and, particularly, winter precipitation. These records also showed that vegetation response was in dynamic equilibrium with rapid climate changes such as the Dangaard-Oeschger (D-O cycles and Heinrich events, similar in magnitude and velocity to the ongoing global warming. However, the magnitude of the millennial-scale warming events of the last glacial period was regionally-specific. Precession seems to have imprinted regions below 40°N while obliquity, which controls average annual temperature, probably mediated the impact of D-O warming events above 40°N. A decoupling between high- and low-latitude climate was also observed within last glacial warm (Greenland interstadials and cold phases (Greenland stadials. The synchronous response of western European vegetation/climate and eastern North Atlantic SSTs to D-O cycles was not a pervasive feature throughout the Quaternary. During periods of ice growth such as MIS 5a/4, MIS 11c/b and MIS 19c/b, repeated millennial-scale cold-air/warm-sea decoupling events occurred on the European margin superimposed to a long-term air-sea decoupling trend. Strong air-sea thermal contrasts promoted the production of water vapor that was then transported northward by the westerlies and fed ice sheets. This interaction between long-term and shorter time-scale climatic variability may have amplified insolation decreases and thus explain the Ice Ages. This hypothesis should be tested by the integration of stochastic processes in Earth models of intermediate complexity.

  9. Pollen from the Deep-Sea: A Breakthrough in the Mystery of the Ice Ages.

    Science.gov (United States)

    Sánchez Goñi, María F; Desprat, Stéphanie; Fletcher, William J; Morales-Molino, César; Naughton, Filipa; Oliveira, Dulce; Urrego, Dunia H; Zorzi, Coralie

    2018-01-01

    Pollen from deep-sea sedimentary sequences provides an integrated regional reconstruction of vegetation and climate (temperature, precipitation, and seasonality) on the adjacent continent. More importantly, the direct correlation of pollen, marine and ice indicators allows comparison of the atmospheric climatic changes that have affected the continent with the response of the Earth's other reservoirs, i.e., the oceans and cryosphere, without any chronological uncertainty. The study of long continuous pollen records from the European margin has revealed a changing and complex interplay between European climate, North Atlantic sea surface temperatures (SSTs), ice growth and decay, and high- and low-latitude forcing at orbital and millennial timescales. These records have shown that the amplitude of the last five terrestrial interglacials was similar above 40°N, while below 40°N their magnitude differed due to precession-modulated changes in seasonality and, particularly, winter precipitation. These records also showed that vegetation response was in dynamic equilibrium with rapid climate changes such as the Dangaard-Oeschger (D-O) cycles and Heinrich events, similar in magnitude and velocity to the ongoing global warming. However, the magnitude of the millennial-scale warming events of the last glacial period was regionally-specific. Precession seems to have imprinted regions below 40°N while obliquity, which controls average annual temperature, probably mediated the impact of D-O warming events above 40°N. A decoupling between high- and low-latitude climate was also observed within last glacial warm (Greenland interstadials) and cold phases (Greenland stadials). The synchronous response of western European vegetation/climate and eastern North Atlantic SSTs to D-O cycles was not a pervasive feature throughout the Quaternary. During periods of ice growth such as MIS 5a/4, MIS 11c/b and MIS 19c/b, repeated millennial-scale cold-air/warm-sea decoupling events occurred on the European margin superimposed to a long-term air-sea decoupling trend. Strong air-sea thermal contrasts promoted the production of water vapor that was then transported northward by the westerlies and fed ice sheets. This interaction between long-term and shorter time-scale climatic variability may have amplified insolation decreases and thus explain the Ice Ages. This hypothesis should be tested by the integration of stochastic processes in Earth models of intermediate complexity.

  10. The Breakthrough Listen Search for Intelligent Life: Radio Frequency Interference in the Green Bank Telescope

    Science.gov (United States)

    Dana, Ryan

    2018-01-01

    In the search for extra terrestrial intelligence, the vast majority of our “signals of interest,” are simply satellite radio frequency interference. The goal to my research, therefore, was to accurately predict the exact locations of satellites in our sky to analyze specific satellites causing the interference as well as potentially predict when satellites will cross in the way of our beams so that we can further optimize our scripts and get more usable data.I have built an algorithm that plots the exact location in altitude and azimuth of any grouping of satellites that you want in the sky from any position on earth in latitude, longitude, and elevation. From there, you can input a specific right ascension and declination of the location you are trying to track in the sky with a telescope. Using these inputs, we can calculate the angular and positional distance of certain satellites to our beam to further analyze satellite radio frequency interference.The process begins by importing a list of Two Line Element information that the algorithm reads in. Two Line Elements are how Satellites are organized and are updated frequently. They give a variety of information ranging from the Satellite ID to its Mean Motion or anomaly. From there, the code breaks up the information given by these elements to predict their location. The algorithm can also plot in 3D coordinates around an earthlike sphere to conceptualize the route that each Satellite has taken.The code has been used in a variety of ways but most notably to identify satellites interfering with the beam for Arecibo’s Ross 128 Candidate signal. From here, the code will be the backbone to calculating drift rates, Doppler shifts and intensity of certain satellites and why our team consistently receives estranged satellite signals of interest. Furthermore, in the case of a serious candidate signal in the near future, it will be important to analyze satellites interfering in the beam.

  11. Moving Edtech Forward: Upstart School Networks Are Betting on a Breakthrough

    Science.gov (United States)

    Horn, Michael B.

    2016-01-01

    The digital revolution occurring in schools has focused predominantly on online education in its various forms--including fully online courses, learning management systems, games, and mobile applications--to personalize learning and boost the performance of all students. Companies have been experimenting with technologies for years, yet these…

  12. Collision Welding of Dissimilar Materials by Vaporizing Foil Actuator: A Breakthrough Technology for Dissimilar Metal Joining

    Energy Technology Data Exchange (ETDEWEB)

    Daehn, Glenn S. [The Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering; Vivek, Anupam [The Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering; Liu, Bert C. [The Ohio State Univ., Columbus, OH (United States). Dept. of Materials Science and Engineering

    2016-09-30

    This work demonstrated and further developed Vaporizing Foil Actuator Welding (VFAW) as a viable technique for dissimilar-metal joining for automotive lightweighting applications. VFAW is a novel impact welding technology, which uses the pressure developed from electrically-assisted rapid vaporization of a thin aluminum foil (the consumable) to launch and ultimately collide two of more pieces of metal to create a solid-state bond between them. 18 dissimilar combinations of automotive alloys from the steel, aluminum and magnesium alloy classes were screened for weldability and characterized by metallography of weld cross sections, corrosion testing, and mechanical testing. Most combinations, especially a good number of Al/Fe pairs, were welded successfully. VFAW was even able to weld combinations of very high strength materials such as 5000 and 6000 series aluminum alloys to boron and dual phase steels, which is difficult to impossible by other joining techniques such as resistance spot welding, friction stir welding, or riveting. When mechanically tested, the samples routinely failed in a base metal rather than along the weld interface, showing that the weld was stronger than either of the base metals. As for corrosion performance, a polymer-based protective coating was used to successfully combat galvanic corrosion of 5 Al/Fe pairs through a month-long exposure to warm salt fog. In addition to the technical capabilities, VFAW also consumes little energy compared to conventional welding techniques and requires relatively light, flexible tooling. Given the technical and economic advantages, VFAW can be a very competitive joining technology for automotive lightweighting. The success of this project and related activities has resulted in substantial interest not only within the research community but also various levels of automotive supply chain, which are collaborating to bring this technology to commercial use.

  13. Nanotechnology-based Cryopreservation of Cell-Scaffold Constructs: A New Breakthrough to Clinical Application.

    Science.gov (United States)

    Chen, G; Lv, Y

    The developments of "off-the-shelf" cell-scaffold constructs received an increasing interest in tissue engineering and regenerative medicine. Although the direct cryopreservation of a single-cell suspension in the tube is a relative mature technology, the cryopreservation of cell-scaffold constructs remains a challenge. Nanotechnology shows tremendous potential for cryopreservation in regulating of freezing and thawing processes. For example, nanoparticles have been reported to modify the cryoprotective agent (CPA), adjust the process of cooling and warming cycles. In this review, we provide an overview of cryopreservation of cell-scaffold constructs firstly. The review further focuses on the effects of nanotechnology on cryopreservation of cell-scaffold constructs, including the nanostructure of scaffold, nanoparticles in cooling and warming process in cryopreservation. The perspectives on future challenges in this filed are also pointed out.

  14. Comparative epigenomics: an emerging field with breakthrough potential to understand evolution of epigenetic regulation

    Directory of Open Access Journals (Sweden)

    Janine E. Deakin

    2014-12-01

    Full Text Available Epigenetic mechanisms regulate gene expression, thereby mediating the interaction between environment, genotype and phenotype. Changes to epigenetic regulation of genes may be heritable, permitting rapid adaptation of a species to environmental cues. However, most of the current understanding of epigenetic gene regulation has been gained from studies of mice and humans, with only a limited understanding of the conservation of epigenetic mechanisms across divergent taxa. The relative ease at which genome sequence data is now obtained and the advancements made in epigenomics techniques for non-model species provides a basis for carrying out comparative epigenomic studies across a wider range of species, making it possible to start unraveling the evolution of epigenetic mechanisms. We review the current knowledge of epigenetic mechanisms obtained from studying model organisms, give an example of how comparative epigenomics using non-model species is helping to trace the evolutionary history of X chromosome inactivation in mammals and explore the opportunities to study comparative epigenomics in biological systems displaying adaptation between species, such as the immune system and sex determination.

  15. Beyond breakthrough research: Epistemic properties of research and their consequences for research funding

    NARCIS (Netherlands)

    Laudel, Grit; Gläser, Jochen

    2014-01-01

    The aim of this paper is to initiate a discussion about links between epistemic properties and institutional conditions for research by providing an exploratory analysis of such links featured by projects funded by the European Research Council (ERC). Our analysis identifies epistemic properties of

  16. York University atomic scientist contributes to new breakthrough in the production of antimatter

    CERN Document Server

    2002-01-01

    Physicists working in Europe, including Canada Research Chair in Atomic Physics at York University, Prof. Eric Hessels, have succeeded in capturing the first glimpse of the structure of antimatter. The ATRAP group of scientists at CERN have managed to examine the internal states of anti-hydrogen atoms (1/2 page).

  17. Compartmentalized Microfluidic Platforms: The Unrivaled Breakthrough of In Vitro Tools for Neurobiological Research.

    Science.gov (United States)

    Neto, Estrela; Leitão, Luís; Sousa, Daniela M; Alves, Cecília J; Alencastre, Inês S; Aguiar, Paulo; Lamghari, Meriem

    2016-11-16

    Microfluidic technology has become a valuable tool to the scientific community, allowing researchers to study fine cellular mechanisms with higher variable control compared with conventional systems. It has evolved tremendously, and its applicability and flexibility made its usage grow exponentially and transversely to several research fields. This has been particularly noticeable in neuroscience research, where microfluidic platforms made it possible to address specific questions extending from axonal guidance, synapse formation, or axonal transport to the development of 3D models of the CNS to allow pharmacological testing and drug screening. Furthermore, the continuous upgrade of microfluidic platforms has allowed a deeper study of the communication occurring between different neuronal and glial cells or between neurons and other peripheral tissues, both in physiological and pathological conditions. Importantly, the evolution of microfluidic technology has always been accompanied by the development of new computational tools addressing data acquisition, analysis, and modeling. Copyright © 2016 the authors 0270-6474/16/3611573-12$15.00/0.

  18. Oncolytic Herpes Simplex Virus-based Strategies: Toward a Breakthrough in Glioblastoma Therapy

    Directory of Open Access Journals (Sweden)

    Jianfang eNing

    2014-06-01

    Full Text Available Oncolytic viruses are a class of antitumor agents that selectively kill tumor cells while sparing normal cells. Oncolytic herpes simplex virus (oHSV has been investigated in clinical trials for patients with the malignant brain tumor glioblastoma for more than a decade. These clinical studies have shown the safety of oHSV administration to the human brain, however, therapeutic efficacy of oHSV as a single treatment remains unsatisfactory. Factors that could hamper the anti-glioblastoma efficacy of oHSV include: attenuated potency of oHSV due to deletion or mutation of viral genes involved in virulence, restricted viral replication and spread within the tumor; suboptimal oHSV delivery associated with intratumoral injection; virus infection-induced inflammatory and cellular immune responses which could inhibit oHSV replication and promote its clearance; lack of effective incorporation of oHSV into standard-of-care, and poor knowledge about the ability of oHSV to target glioblastoma stem cells (GSCs. In an attempt to address these issues, recent research efforts have been directed at: (1 design of new engineered viruses to enhance potency, (2 better understanding of the role of the cellular immunity elicited by oHSV infection of tumors, (3 combinatorial strategies with different antitumor agents with a mechanistic rationale, (4 armed viruses expressing therapeutic transgenes, (5 use of GSC-derived models in oHSV evaluation, and (6 combinations of these. In this review, we will describe the current status of oHSV clinical trials for glioblastoma, and discuss recent research advances and future directions toward successful oHSV-based therapy of glioblastoma.

  19. Is clopidogrel better than aspirin following breakthrough strokes while on aspirin? A retrospective cohort study.

    Science.gov (United States)

    Lee, Meng; Wu, Yi-Ling; Saver, Jeffrey L; Lee, Hsuei-Chen; Lee, Jiann-Der; Chang, Ku-Chou; Wu, Chih-Ying; Lee, Tsong-Hai; Wang, Hui-Hsuan; Rao, Neal M; Ovbiagele, Bruce

    2014-12-02

    There is insufficient evidence on which to base a recommendation for optimal antiplatelet therapy following a stroke while on aspirin. The objective was to compare clopidogrel initiation vs aspirin reinitiation for vascular risk reduction among patients with ischaemic stroke on aspirin at the time of their index stroke. Retrospective. We conducted a nationwide cohort study by retrieving all hospitalised patients (≥18 years) with a primary diagnosis of ischaemic stroke between 2003 and 2009 from Taiwan National Health Insurance Research Database. Among 3862 patients receiving aspirin before the index ischaemic stroke and receiving either aspirin or clopidogrel after index stroke during follow-up period, 1623 were excluded due to a medication possession ratio new-onset major adverse cardiovascular event (MACE: composite of any stroke or myocardial infarction). The leading secondary end point was any recurrent stroke. Compared to aspirin, clopidogrel was associated with a lower occurrence of future MACE (HR=0.54, 95% CI 0.43 to 0.68, p<0.001, number needed to treat: 8) and recurrent stroke (HR=0.54, 95% CI 0.42 to 0.69, p<0.001, number needed to treat: 9) after adjustment of relevant covariates. Among patients with an ischaemic stroke while taking aspirin, clopidogrel initiation was associated with fewer recurrent vascular events than aspirin reinitiation. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

  20. LASIK flap breakthrough in Nd:YAG laser treatment of epithelial ingrowth

    NARCIS (Netherlands)

    Lapid-Gortzak, Ruth; Hughes, John M.; Nieuwendaal, Carla P.; Mourits, Maarten P.; van der Meulen, Ivanka J. E.

    2015-01-01

    To present two cases with complications after Nd:YAG laser treatment of epithelial ingrowth. Case reports. Dense central recurrent epithelial ingrowth was treated with a Nd:YAG laser directed at the epithelial nests in the LASIK flap interface in one case. Misalignment of the aiming beam after

  1. A breakthrough in enzyme technology to fight penicillin resistance-industrial application of penicillin amidase.

    Science.gov (United States)

    Buchholz, Klaus

    2016-05-01

    Enzymatic penicillin hydrolysis by penicillin amidase (also penicillin acylase, PA) represents a Landmark: the first industrially and economically highly important process using an immobilized biocatalyst. Resistance of infective bacteria to antibiotics had become a major topic of research and industrial activities. Solutions to this problem, the antibiotics resistance of infective microorganisms, required the search for new antibiotics, but also the development of derivatives, notably penicillin derivatives, that overcame resistance. An obvious route was to hydrolyse penicillin to 6-aminopenicillanic acid (6-APA), as a first step, for the introduction via chemical synthesis of various different side chains. Hydrolysis via chemical reaction sequences was tedious requiring large amounts of toxic chemicals, and they were cost intensive. Enzymatic hydrolysis using penicillin amidase represented a much more elegant route. The basis for such a solution was the development of techniques for enzyme immobilization, a highly difficult task with respect to industrial application. Two pioneer groups started to develop solutions to this problem in the late 1960s and 1970s: that of Günter Schmidt-Kastner at Bayer AG (Germany) and that of Malcolm Lilly of Imperial College London. Here, one example of this development, that at Bayer, will be presented in more detail since it illustrates well the achievement of a solution to the problems of industrial application of enzymatic processes, notably development of an immobilization method for penicillin amidase suitable for scale up to application in industrial reactors under economic conditions. A range of bottlenecks and technical problems of large-scale application had to be overcome. Data giving an inside view of this pioneer achievement in the early phase of the new field of biocatalysis are presented. The development finally resulted in a highly innovative and commercially important enzymatic process to produce 6-APA that created a new antibiotics industry and that opened the way for the establishment of over 100 industrial processes with immobilized biocatalysts worldwide today.

  2. Oncolytic herpes simplex virus-based strategies: toward a breakthrough in glioblastoma therapy.

    Science.gov (United States)

    Ning, Jianfang; Wakimoto, Hiroaki

    2014-01-01

    Oncolytic viruses (OV) are a class of antitumor agents that selectively kill tumor cells while sparing normal cells. Oncolytic herpes simplex virus (oHSV) has been investigated in clinical trials for patients with the malignant brain tumor glioblastoma for more than a decade. These clinical studies have shown the safety of oHSV administration to the human brain, however, therapeutic efficacy of oHSV as a single treatment remains unsatisfactory. Factors that could hamper the anti-glioblastoma efficacy of oHSV include: attenuated potency of oHSV due to deletion or mutation of viral genes involved in virulence, restricting viral replication and spread within the tumor; suboptimal oHSV delivery associated with intratumoral injection; virus infection-induced inflammatory and cellular immune responses which could inhibit oHSV replication and promote its clearance; lack of effective incorporation of oHSV into standard-of-care, and poor knowledge about the ability of oHSV to target glioblastoma stem cells (GSCs). In an attempt to address these issues, recent research efforts have been directed at: (1) design of new engineered viruses to enhance potency, (2) better understanding of the role of the cellular immunity elicited by oHSV infection of tumors, (3) combinatorial strategies with different antitumor agents with a mechanistic rationale, (4) "armed" viruses expressing therapeutic transgenes, (5) use of GSC-derived models in oHSV evaluation, and (6) combinations of these. In this review, we will describe the current status of oHSV clinical trials for glioblastoma, and discuss recent research advances and future directions toward successful oHSV-based therapy of glioblastoma.

  3. Breakthrough in neuroendocrinology by discovering novel neuropeptides and neurosteroids: 2. Discovery of neurosteroids and pineal neurosteroids.

    Science.gov (United States)

    Tsutsui, Kazuyoshi; Haraguchi, Shogo

    2014-09-01

    Bargmann-Scharrer's discovery of "neurosecretion" in the first half of the 20th century has since matured into the scientific discipline of neuroendocrinology. Identification of novel neurohormones, such as neuropeptides and neurosteroids, is essential for the progress of neuroendocrinology. Our studies over the past two decades have significantly broadened the horizons of this field of research by identifying novel neuropeptides and neurosteroids in vertebrates that have opened new lines of scientific investigation in neuroendocrinology. We have established de novo synthesis and functions of neurosteroids in the brain of various vertebrates. Recently, we discovered 7α-hydroxypregnenolone (7α-OH PREG), a novel bioactive neurosteroid that acts as a key regulator for inducing locomotor behavior by means of the dopaminergic system. We further discovered that the pineal gland, an endocrine organ located close to the brain, is an important site of production of neurosteroids de novo from cholesterol (CHOL). The pineal gland secretes 7α-OH PREG and 3α,5α-tetrahydroprogesterone (3α,5α-THP; allopregnanolone) that are involved in locomotor rhythms and neuronal survival, respectively. Subsequently, we have demonstrated their mode of action and functional significance. This review summarizes the discovery of these novel neurosteroids and its contribution to the progress of neuroendocrinology. Copyright © 2014 Elsevier Inc. All rights reserved.

  4. A highly controllable reconstituted cell-free system--a breakthrough in protein synthesis research.

    Science.gov (United States)

    Ohashi, Hiroyuki; Kanamori, Takashi; Shimizu, Yoshihiro; Ueda, Takuya

    2010-04-01

    The PURE system is a highly controllable cell-free protein synthesis system composed of individually prepared components that are required for protein synthesis in Escherichia coli. The PURE system contains neither nucleases nor proteases, both of which degrade DNA or mRNA templates and proteins. The protein products are easily purified using affinity chromatography to remove the tagged protein factors. The PURE system should help to create new fields in protein research.

  5. Diagnostic, Predictive, Prognostic, and Therapeutic Molecular Biomarkers in Third Millennium: A Breakthrough in Gastric Cancer

    Directory of Open Access Journals (Sweden)

    Nicola Carlomagno

    2017-01-01

    Full Text Available Introduction. Gastric cancer is the fifth most common cancer and the third cause of cancer death. The clinical outcomes of the patients are still not encouraging with a low rate of 5 years’ survival. Often the disease is diagnosed at advanced stages and this obviously negatively affects patients outcomes. A deep understanding of molecular basis of gastric cancer can lead to the identification of diagnostic, predictive, prognostic, and therapeutic biomarkers. Main Body. This paper aims to give a global view on the molecular classification and mechanisms involved in the development of the tumour and on the biomarkers for gastric cancer. We discuss the role of E-cadherin, HER2, fibroblast growth factor receptor (FGFR, MET, human epidermal growth factor receptor (EGFR, hepatocyte growth factor receptor (HGFR, mammalian target of rapamycin (mTOR, microsatellite instability (MSI, PD-L1, and TP53. We have also considered in this manuscript new emerging biomarkers as matrix metalloproteases (MMPs, microRNAs, and long noncoding RNAs (lncRNAs. Conclusions. Identifying and validating diagnostic, prognostic, predictive, and therapeutic biomarkers will have a huge impact on patients outcomes as they will allow early detection of tumours and also guide the choice of a targeted therapy based on specific molecular features of the cancer.

  6. AN EXAMINATION OF SERVITIZATION AS A BREAKTHROUGH SUCCESS FACTOR ALONG THE SUPPLY CHAIN

    Directory of Open Access Journals (Sweden)

    Judit OLÁH

    2017-12-01

    Full Text Available The turbulent changing economic environment following the 2008 global financial and economic crisis has posed a major challenge to the majority of producing and manufacturing companies. The recessionary economy of the European Union, the “marginal countries” existence on the edge of bankruptcy, the shortage of loans and the subdued consumption of the population all affect the way in which products are marketed and the integration of accompanying services. This change has a significant impact on logistics processes and logistics service providers, as they face changing tasks and challenges in supply chain management. The authors intend to address this impact in their article, which also takes into account the results of international scientific papers.

  7. Viruses 2018 - Breakthroughs in Viral Replication - Barcelona, Spain | Center for Cancer Research

    Science.gov (United States)

    This Conference is held in Barcelona, Spain on February 7 - 9, 2018. For registration information please go to the conference website at https://sciforum.net/conference/Viruses-2018 Dates to remember: Abstract Submission: 31 Oct. 2017 Acceptance Notification: 25 Nov. 2017 Full Paper Submission: 1 Aug. 2018

  8. Investigating BRCA Mutations: A Breakthrough in Precision Medicine of Castration-Resistant Prostate Cancer.

    Science.gov (United States)

    Modena, Alessandra; Iacovelli, Roberto; Scarpa, Aldo; Brunelli, Matteo; Ciccarese, Chiara; Fantinel, Emanuela; Bimbatti, Davide; Massari, Francesco; Martignoni, Guido; Tortora, Giampaolo

    2016-10-01

    Despite the development of novel effective therapeutic strategies, metastatic castration-resistant prostate cancer (mCRPC) remains a disease with a lethal course and a high biological and molecular heterogeneity. To date, germline mutations in the BRCA gene represent one of the main risk factors for developing prostate cancer, with a strong association with aggressive phenotype and poor clinical outcomes. A better understanding of the genomic landscape of prostate cancer has strengthened the idea that "synthetic lethality" of this disease might be useful in cancer-drug discovery, focusing on agents such as platinum compounds and poly (adenosine diphosphate [ADP]-ribose) polymerase inhibitors (PARPi). In this review, we summarize the main data available on BRCA mutations and discuss the clinical implications of these genomic aberrations in the management of prostate cancer, stressing the need to identify prognostic and predictive biomarkers and to deeply understand the mechanisms of treatment resistance, in order to maximize personalized medicine protocols and therefore clinical benefit.

  9. Utilizing transient breakthroughs for evaluating the potential of Kureha carbon for CO2 capture

    NARCIS (Netherlands)

    Yu, H.; Wang, X.; Xu, C.; Chen, D.L.; Zhu, W.; Krishna, R.

    2015-01-01

    The commercial Kureha carbon was used as adsorbent for the selective adsorption of CO2 over N-2 and CH4. The single-component isotherms are reported at pressures up to 2500 kPa and at 298, 310, and 323 K. The Langmuir-Freundlich model appropriately describes the adsorption equilibrium data over the

  10. Mathematical modeling and experimental breakthrough curves of cephalosporin C adsorption in a fixed-bed column

    OpenAIRE

    Burkert, Carlos André Veiga; Barbosa, Geraldo Nazareno de Oliveira; Mazutti, Marcio Antônio; Maugeri, Francisco

    2011-01-01

    This work presents the mathematical modeling of the cephalosporin C (CPC) adsorption process in a fixed-bed column. The application of Particle Swarm Optimization (PSO) algorithm for parameter estimation was first considered, which shows to be a useful tool for parameter estimation in adsorption processes. Modeling and simulation of CPC purification showed a good performance during both estimation and validation step. After this, a central composite rotational design (CCRD) was conceived taki...

  11. Trumpeting through the iron curtain: The breakthrough of jazz in socialist Yugoslavia

    Directory of Open Access Journals (Sweden)

    Vučetić Radina

    2012-01-01

    Full Text Available During the Cold War, jazz became a powerful propaganda weapon in the battle for “hearts and minds”. As early as the 1950s, the American administration began its Cold War “jazz campaign”, by broadcasting the popular jazz radio show Music USA over the Voice of America, and by sending its top jazz artists on world tours. In this specific cultural Cold War, Yugoslavia was, as in its overall politics, in a specific position between the East and the West. The postwar period in Yugoslavia, following the establishment of the new (socialist government, was characterized by strong resistance towards jazz as “decadent” music, until 1948 when “no” to Stalin became “yes” to jazz. From the 1950s, jazz entered Yugoslav institutions and media, and during the following two decades, completely conquered the radio, TV, and record industry, as well as the manifestations such as the Youth Day. On account of the openness of the regime during the 1950s and 1960s, Yugoslavia was frequently visited by the greatest jazz stars, such as Dizzy Gillespie, Louis Armstrong and Ella Fitzgerald. In the context of the Cold War, the promotion of jazz in Yugoslavia proved to be beneficial for both sides - by exporting jazz, America also exported its freedom, culture and system of values, while Yugoslavia showed the West to what extent its political system was open and liberal, at least concerning this type of music.

  12. Teacher and Student Perceptions on High School Science Flipped Classrooms: Educational Breakthrough or Media Hype?

    Science.gov (United States)

    Hunley, Rebecca C.

    For years educators have struggled to ensure students meet the rigors of state mandated tests. Challenges that often impede student success are student absences, school closings due to weather, and remediation for students who need additional help while advanced students can move ahead. Many educators, especially secondary math and science teachers, have responded to these issues by implementing a teaching strategy called the flipped classroom where students view lectures, power points, or podcasts outside of school and class time shifts to allow opportunities for collaborative learning. The purpose of this research was to evaluate teacher and student perceptions of high school flipped science classrooms. A qualitative phenomenological study was conducted to observe 3 high school science teachers from Georgia, North Carolina, and Tennessee selected through purposeful sampling who have used the flipped classroom method for a minimum of 2 years. Analysis of data from an online survey, direct observation, teacher interviews, and student focus groups helped to identify challenges and benefits of this teaching and learning strategy. Findings indicated that teachers find the flipped classroom beneficial to build student relationships but requires a significant amount of time to develop. Mixed student reactions revealed benefits of a flipped classroom as a successful learning tool for current and future endeavors for college or career preparation.

  13. Breakthrough Design and Implementation of Many-Body Theories. Final Scientific/Technical Report

    International Nuclear Information System (INIS)

    Hirata, So

    2012-01-01

    This report discusses the following highlights of the project: (1) grid-based Hartree-Fock equation solver; (2) explicitly correlated coupled-cluster and perturbation methods; (3) anharmonic vibrational frequencies and vibrationally averaged NMR and structural parameters of FHF; (4) anharmonic vibrational frequencies and vibrationally averaged structures of hydrocarbon combustion species; (5) anharmonic vibrational analysis of the guanine-cytosine base pair; (6) the nature of the Born-Oppenheimer approximation; (7) Polymers and solids Brillouin-zone downsampling - the modulo MP2 method; (8) explicitly correlated MP2 for extended systems; (9) fast correlated method for molecular crystals - solid formic acid; and (10) fast correlated method for molecular crystals - solid hydrogen fluoride.

  14. History of HERMES III diode to z-pinch breakthrough and beyond :

    Energy Technology Data Exchange (ETDEWEB)

    Sanford, Thomas Williamlou.

    2013-04-01

    HERMES III and Z are two flagship accelerators of Sandias pulsed-power program developed to generate intense -ray fields for the study of nuclear radiation effects, and to explore high energy-density physics (including the production of intense x-ray fields for Inertia Confinement Fusion [ICF]), respectively. A diode at the exit of HERMES III converts its 20-MeV electron beam into -rays. In contrast, at the center of Z, a z-pinch is used to convert its 20-MA current into an intense burst of x-rays. Here the history of how the HERMES III diode emerged from theoretical considerations to actual hardware is discussed. Next, the reverse process of how the experimental discovery of wire-array stabilization in a z-pinch, led to a better theory of wirearray implosions and its application to one of the ICF concepts on Z--the DH (Dynamic Hohlraum) is reviewed. Lastly, the report concludes with how the unexpected axial radiation asymmetry measured in the DH is understood. The first discussion illustrates the evolution of physics from theory-to-observationto- refinement. The second two illustrate the reverse process of observationto- theory-to refinement. The histories are discussed through the vehicle of my research at Sandia, illustrating the unique environment Sandia provides for personal growth and development into a scientific leader.

  15. Neptune modular rockets for breakthrough low-cost space access Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Interorbital Systems is developing a new generation of modular, low-cost, rapid-response space launch vehicles. Interorbital modular rockets core element is the...

  16. Animal Models of Chemical Carcinogenesis: Driving Breakthroughs in Cancer Research for 100 Years.

    Science.gov (United States)

    Kemp, Christopher J

    2015-10-01

    The identification of carcinogens in the workplace, diet, and environment through chemical carcinogenesis studies in animals has directly contributed to a reduction of cancer burden in the human population. Reduced exposure to these carcinogens through lifestyle changes, government regulation, or change in industry practices has reduced cancer incidence in exposed populations. In addition to providing the first experimental evidence for cancer's relationship to chemical and radiation exposure, animal models of environmentally induced cancer have and will continue to provide important insight into the causes, mechanisms, and conceptual frameworks of cancer. More recently, combining chemical carcinogens with genetically engineered mouse models has emerged as an invaluable approach to study the complex interaction between genotype and environment that contributes to cancer development. In the future, animal models of environmentally induced cancer are likely to provide insight into areas such as the epigenetic basis of cancer, genetic modifiers of cancer susceptibility, the systems biology of cancer, inflammation and cancer, and cancer prevention. © 2015 Cold Spring Harbor Laboratory Press.

  17. Rapid breakthrough of131I in an in vitro human epidermis model.

    Science.gov (United States)

    Nygren, U; Hedman, A; Nylén, T; Thors, L

    2017-08-01

    Skin contamination with radionuclides may cause local radiation damage, but also systemic distribution if the nuclides penetrate the epidermal membrane. Detailed information of the skin absorption of radionuclides is of importance for e.g. dose estimations and development of decontamination strategies. In the present study, penetration of 131 I through human epidermis was studied using an in vitro flow through diffusion chamber. Epidermis was exposed to a Na 131 I-solution, used in nuclear medicine, and the potential concentration-dependency of skin penetration was examined by including two concentrations of non-radioactive NaI. Penetration of 131 I occurred after a few minutes of exposure and steady state penetration rate was obtained after about 50-70min independently of the iodine concentration and receptor solution used. The two receptor solutions evaluated; phosphate buffered saline solution and an ethanol and water-mixture (1:1), resulted in significantly higher penetration rate of 131 I using the ethanol and water-mixture. The penetration of iodine was calculated to be concentration-dependent independently of the receptor solution utilized. In addition, radioactive iodine did not accumulate in epidermis in the in vitro-model used. In conclusion, the present study provides detailed information on the rapid iodine penetration at the early phase of radionuclide exposure, defined as the first 30min of the experiment, and is clearly suitable for decontamination studies. In addition, methodological aspects, e.g. impact of the receptor solution, should carefully be considered in studies of radionuclide skin penetration using in vitro-techniques. Copyright © 2017 Elsevier Ltd. All rights reserved.

  18. The CMOS Breakthrough for Space Optical Detection: Recent Advances and Short Term Perspectives

    National Research Council Canada - National Science Library

    Saint-Pe, Olivier; Breart de Boisanger, Michel; Larnaudie, Franck; Tulet, Michel; Davancens, Robert; Magnan, Pierre; Martin Gonthier, Philippe

    2005-01-01

    .... Indeed, detectors built with both technologies allow excellent electro-optics performances to be reached, the selection of the most adequate device being driven by their functional and technological features and limits...

  19. Is the breakthrough of light electric-powered vehicles imminent?; Leicht-Elektromobile vor dem Durchbruch?

    Energy Technology Data Exchange (ETDEWEB)

    Stricker, B.

    1995-09-01

    Light electric-powered vehicles still exist in the shadow beside gasoline-operated automobiles. One reason for this lies in the economic recession, another in the marketing strategy for the Swatch vehicle due to be put on the market shortly. The report gives an overview of the light vehicles shown this year at Berne`s solar vehicle exhibition. TWIKE, an innovative, energy-efficient tricycle, is particularly pointed out. (BWI) [Deutsch] Leicht-Elektromobile fristen leider immer noch ein Schattendasein neben den benzinbetriebenen Automobilen. Der Grund dafuer ist neben der rezessiven Wirtschaftstendenz auch in der Marketing-Strategie fuer das zu erwartende Swatch-Mobil zu sehen. Der vorliegende Beitrag gibt einen Ueberblick ueber die auf dem diesjaehrigen Solarsalon in Bern gezeigten Leichtmobile. Besonders hervorgehoben wird dabei TWIKE, ein innovatives, energieeffizientes Dreirad. (BWI)

  20. Breakthrough In Current In Plane Metrology For Monitoring Large Scale MRAM Production

    DEFF Research Database (Denmark)

    Cagliani, Alberto; Østerberg, Frederik Westergaard; Hansen, Ole

    2017-01-01

    of the Resistance Area product (RA) and the Tunnel Magnetoresistance (TMR) measurements, compared to state of the art CIPT metrology tools dedicated to R&D. On two test wafers, the repeatability of RA and MR was improved up to 350% and the measurement reproducibility up to 1700%. We believe that CIPT metrology now...

  1. Exploitation of a Breakthrough in Magnetic Confinement Fusion to Improve Transuranic Incineration

    Energy Technology Data Exchange (ETDEWEB)

    Schneider, Erich [Nuclear and Radiation Engineering Program, The University of Texas at Austin, Austin, TX 78712 (United States); Kotschenreuther, Mike; Mahajan, Swadesh; Valanju, Prashant [Institute for Fusion Studies, The University of Texas at Austin, Austin, TX 78712 (United States)

    2009-06-15

    A fusion-assisted transmutation system for the destruction of transuranic nuclear waste is developed by combining a subcritical fusion-fission hybrid assembly uniquely equipped to burn the worst thermal non-fissile transuranic isotopes with a new fuel cycle that uses cheaper light water reactors for most of the transmutation. The centerpiece of this fuel cycle, the high power density compact fusion neutron source (CFNS, 100 MW, outer radius <3 m), is made possible by a new divertor with a heat-handling capacity five times that of the standard alternative. The number of hybrids needed to destroy a given amount of waste is about an order of magnitude below the corresponding number of critical fast spectrum reactors (FR) as the latter cannot fully exploit the new fuel cycle. Also, the time needed for 99% transuranic waste destruction reduces from centuries (with FR) to decades. The generic Hybrid, combining neutron-rich fusion with energy-rich fission, was first conceptualized several decades ago. However, it is only now that accumulated advances in fusion science and technology allow designing a neutron source like CFNS that is simultaneously compact and high power density, offering a neutron source an order of magnitude stronger than that obtained from accelerator driven systems. The former is essential for efficient coupling to the fission blanket, and the latter is key to efficient neutron production necessary to yield high neutron fluxes needed for effective transmutation. The recent invention of the SuperX-Divertor (SXD)1, a new magnetic configuration that allows the system to safely exhaust large heat and particle fluxes peculiar to CFNS-like devices, is a crucial addition to the underlying knowledge base. The subcritical FFTS acquires a definite advantage over the critical FR approach because of its ability to support an innovative fuel cycle that makes the cheaper LWR do the bulk (75%) of the transuranic transmutation via deep burn in an inert matrix fuel form. This cycle is not accessible to the FR approach because the remaining marginally fissionable long-term radio-toxic and bio-hazardous transuranics cannot be stably and safely burned in critical reactors. The fission part of the Hybrid consists of standard FR components; a sodium-cooled metal fueled lattice featuring geometry similar to that of the Generation-IV Sodium Fast Reactor (SFR) is proposed. The critical milestone in the development of the Hybrid lies in the realization of the CFNS as a relatively inexpensive, high source density fusion neutron source. 1. P. Valanju, M. Kotschenreuther, S. Mahajan, Fus. Eng. Des., (2008). (authors)

  2. Grounding of Six Sigma s Breakthrough Cookbook: How to research a methodology?

    NARCIS (Netherlands)

    de Koning, H.; de Mast, J.

    2005-01-01

    The Six Sigma programme has developed into a standard for quality and efficiency improvement in business and industry. This fact makes scientific research into the validity and applicability of this methodology important. This article explores the possibilities of a scientific study of the

  3. Shape Memory Alloy connectors for Ultra High Vacuum applications: a breakthrough for accelerator technologies

    CERN Document Server

    AUTHOR|(CDS)2091326; Garion, Cedric

    Beam-pipe coupling in particle accelerators is nowadays provided by metallic flanges that are tightly connected by several screws or heavy collars. Their installation and dismounting in radioactive areas contribute to the radiation doses received by the technical personnel. Owing to the increased proton-beam intensity and luminosity of the future High-Luminosity LHC (HL-LHC), radioactivity in some specific zones will be significantly higher than in the present LHC; the presence of the technical staff in these areas will be strictly controlled and minimized. Remote interventions are being considered, too. Shape Memory Alloys (SMAs) offer a unique possibility to generate tight connections and fast clamping/unclamping by remotely changing the temperature of the junction unit. In fact, SMAs exhibit unique strain and stress recovery capabilities which are related to reversible phase transition mechanisms, induced thermally or mechanically. In this PhD work, a novel Ultra-High Vacuum (UHV) coupling system based on ...

  4. Networking for ovarian rare tumors: a significant breakthrough improving disease management.

    Science.gov (United States)

    Chiannilkulchai, N; Pautier, P; Genestie, C; Bats, A S; Vacher-Lavenu, M C; Devouassoux-Shisheboran, M; Treilleux, I; Floquet, A; Croce, S; Ferron, G; Mery, E; Pomel, C; Penault-Llorca, F; Lefeuvre-Plesse, C; Henno, S; Leblanc, E; Lemaire, A S; Averous, G; Kurtz, J E; Ray-Coquard, I

    2017-06-01

    Rare ovarian tumors represent >20% of all ovarian cancers. Given the rarity of these tumors, natural history, prognostic factors are not clearly identified. The extreme variability of patients (age, histological subtypes, stage) induces multiple and complex therapeutic strategies. Since 2011, a national network with a dedicated system for referral, up to 22 regional and three national reference centers (RC) has been supported by the French National Cancer Institute (INCa). The network aims to prospectively monitor the management of rare ovarian tumors and provide an equal access to medical expertise and innovative treatments to all French patients through a dedicated website, www.ovaire-rare.org. Over a 5-year activity, 4612 patients have been included. Patients' inclusions increased from 553 in 2011 to 1202 in 2015. Expert pathology review and patients' files discussion in dedicated multidisciplinary tumor boards increased from 166 cases in 2011 (25%) to 538 (45%) in 2015. Pathology review consistently modified the medical strategy in 5-9% every year. The rate of patients' files discussed in RC similarly increased from 294 (53%) to 789 (66%). An increasing number (357 in 5 years) of gynecologic (non-ovarian) rare tumors were also registered by physicians seeking for pathological or medical advice from expert tumor boards. Such a nation-wide organization for rare gynecological tumors has invaluable benefits, not only for patients, but also for epidemiological, clinical and biological research. © The Author 2017. Published by Oxford University Press on behalf of the European Society for Medical Oncology. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

  5. Dentin hypersensitivity: from diagnosis to a breakthrough therapy for everyday sensitivity relief.

    Science.gov (United States)

    Cummins, Diane

    2009-01-01

    This paper provides an overview of the current knowledge of diagnosis, epidemiology, etiology, and clinical management of dentin hypersensitivity. It summarizes technical approaches to relieve sensitivity in professional and home-use products, with emphasis on the clinical evidence for the efficacy of desensitizing toothpaste, and introduces a new innovative dentifrice technology containing 8% arginine, calcium carbonate, and 1450 ppm fluoride. Dentin hypersensitivity is characterized by short, sharp pain arising from exposed dentin in response to external stimuli which cannot be ascribed to any other form of dental defect or disease. The hydrodynamic theory proposes that pain-producing stimuli cause a change in dentin fluid flow that activates intra-dental nerve fibers, via a mechanoreceptor response, to cause pain. To be hypersensitive, dentin must be exposed and dentin tubules must be open to external stimuli and patent at the pulp. Gingival recession is the primary cause of dentin exposure, and a major predisposing factor for dentin hypersensitivity. Dentin hypersensitivity is a prevalent condition. It has been reported to afflict 15-20% of the adult population, typically 20 to 50-year-olds, with peak incidence between 30 and 39 years. Some studies have reported higher prevalence levels of up to 57%. The incidence of dentin hypersensitivity is expected to rise with changing diets, and as caries and periodontal disease prevention result in improved oral health status, and retention and functionality of the dentition. Treatments to relieve dentin hypersensitivity are based on interruption of the neural response to pain stimuli or occlusion of open tubules to block the hydrodynamic mechanism. Effective and robust dentin occlusion offers the greatest prospect for instant and lasting relief of dentin hypersensitivity. In particular, materials which can coat exposed dentin surfaces, in addition to plugging and sealing open dentin tubules, offer the intriguing prospect of strengthening dentin and rendering it less susceptible to predisposing factors, while concurrently reducing dentin hypersensitivity. Clinical studies have shown that a new toothpaste containing 8% arginine, calcium carbonate, and 1450 ppm fluoride as sodium monofluorophosphate offers significantly increased efficacy in reducing sensitivity, compared to a market-leading toothpaste containing 2% potassium ion. Mechanism of action studies have shown that this technology physically seals dentin tubules with a plug that contains arginine, calcium carbonate, and phosphate. This plug, which is resistant to normal pulpal pressures and to acid challenge, effectively reduces dentin fluid flow and, thereby, reduces sensitivity.

  6. H v Council: Another Court breakthrough in the Common Foreign and Security Policy

    DEFF Research Database (Denmark)

    Butler, Graham

    2016-01-01

    This summer alone, the Court of Justice (‘the Court’) has issued two important decisions that will further shape the legal dimension of the Common Foreign and Security Policy (CFSP). Despite this largely intergovernmental sphere of law (the former Second Pillar) being merged into the unified ‘EU...

  7. Breakthroughs in modern cancer therapy and elusive cardiotoxicity: Critical research-practice gaps, challenges, and insights

    NARCIS (Netherlands)

    Zheng, P.-P. (Ping-Pin); Li, J. (Jin); J.M. Kros (Johan)

    2017-01-01

    textabstractTo date, five cancer treatment modalities have been defined. The three traditional modalities of cancer treatment are surgery, radiotherapy, and conventional chemotherapy, and the two modern modalities include molecularly targeted therapy (the fourth modality) and immunotherapy (the

  8. Computational Breakthrough of Natural Lead Hits from the Genus ofArisaemaagainst Human Respiratory Syncytial Virus.

    Science.gov (United States)

    Kant, Kamal; Lal, Uma Ranjan; Ghosh, Manik

    2018-01-01

    To date, efforts for the prevention and treatment of human respiratory syncytial virus (RSV) infection have been still vain, and there is no safe and effective clinical accepted vaccine. Arisaema genus has claimed for various traditional bioactivities, but scientific assessments are quite limited. This encouraged us to carry out our present study on around 60 phytoconstituents of different Arisaema species as a natural inhibitor against the human RSV. Selected 60 phytochemical entities were evaluated on the docking behavior of human RSV receptor (PDB: 4UCC) using Maestro 9.3 (Schrödinger, LLC, Cambridge, USA). Furthermore, kinetic properties and toxicity nature of top graded ligands were analyzed through QikProp and ProTox tools. Notably, rutin (glide score: -8.49), schaftoside (glide score: -8.18) and apigenin-6,8-di-C-β-D-galactoside (glide score - 7.29) have resulted in hopeful natural lead hits with an ideal range of kinetic descriptors values. ProTox tool (oral rodent toxicity) has resulted in likely toxicity targets of apex-graded tested ligands. Finally, the whole efforts can be explored further as a model to confirm its anti-human RSV potential with wet laboratory experiments. Rutin, schaftoside, and apigenin-6,8-di-C-β-D-galactoside showed promising top hits docking profile against human respiratory syncytial virusMoreover, absorption, distribution, metabolism, excretion properties (QikProp) of top hits resulted within an ideal range of kinetic descriptorsProTox tool highlighted toxicity class ranges, LD 50 values, and possible toxicity targets of apex-graded tested ligands. Abbreviations used: RSV: Respiratory syncytial virus, PRRSV: Porcine respiratory and reproductive syndrome virus, ADME-T: Absorption, distribution, metabolism, excretion, and toxicity.

  9. Quantum Mechanics/Molecular Mechanics Modeling of Enzymatic Processes: Caveats and Breakthroughs.

    Science.gov (United States)

    Quesne, Matthew G; Borowski, Tomasz; de Visser, Sam P

    2016-02-18

    Nature has developed large groups of enzymatic catalysts with the aim to transfer substrates into useful products, which enables biosystems to perform all their natural functions. As such, all biochemical processes in our body (we drink, we eat, we breath, we sleep, etc.) are governed by enzymes. One of the problems associated with research on biocatalysts is that they react so fast that details of their reaction mechanisms cannot be obtained with experimental work. In recent years, major advances in computational hardware and software have been made and now large (bio)chemical systems can be studied using accurate computational techniques. One such technique is the quantum mechanics/molecular mechanics (QM/MM) technique, which has gained major momentum in recent years. Unfortunately, it is not a black-box method that is easily applied, but requires careful set-up procedures. In this work we give an overview on the technical difficulties and caveats of QM/MM and discuss work-protocols developed in our groups for running successful QM/MM calculations. © 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  10. Muon families: the breakthrough into the initial part of atmospheric cascades

    International Nuclear Information System (INIS)

    Danilova, T.V.; Erlykin, A.D.; Procureur, J.

    1989-01-01

    Various aspects of muon families are discussed in relation to the development high energy muon detectors with a large sensitive area. Special attention is paid to the advantages of muon families compared with muon groups. The difference between muon families and gamma and hadron families is emphasised. It is shown that muon families could be a useful tool to study the initial part of atmospheric cascades and, by this means, some properties of primary cosmic rays and high energy interactions. (author)

  11. The N 4 CAD chain: another breakthrough of Electricite de France in nuclear engineering

    International Nuclear Information System (INIS)

    Cornon, P.; Durey, P.

    1996-01-01

    For the past 10 years, Electricite de France (EDF) has been using integrated CAD tools for the Design and Erection of its latest Nuclear Power Plant Generation: the 1400 MW PWR called N 4 Project. All the job performed by the CAD section of the Engineering and Construction Division of EDF has aimed to make the software tools fit to the user hands and not the contrary. The PHOEBUS System is described here. This system is organised around two CAD products: PDMS (Plant Design Management System) and PHENIX. The first one is used for installation and the second one for mechanical and electrical diagrams. Each system manages its own data and exchanges common data with the others. They are described into details. (O.M.)

  12. Buildings R&D Breakthroughs: Technologies and Products Supported by the Building Technologies Program

    Energy Technology Data Exchange (ETDEWEB)

    Weakley, Steven A. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

    2012-04-01

    The purpose of the project described in this report is to identify and characterize commercially available products and emerging (near-commercial) technologies that benefited from the support of the Building Technologies Program (BTP) within the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy. The investigation specifically focused on technology-oriented research and development (R&D) projects funded by BTP’s Emerging Technologies subprogram from 2005-2011.

  13. Buildings R&D Breakthroughs. Technologies and Products Supported by the Building Technologies Program

    Energy Technology Data Exchange (ETDEWEB)

    none,

    2012-04-01

    This report identifies and characterizes commercially available products and emerging (near-commercial) technologies that benefited from the support of the Building Technologies Program (BTP) within the U.S. Department of Energy’s Office of Energy Efficiency and Renewable Energy. The investigation specifically focused on technology-oriented research and development (R&D) projects sponsored by BTP’s Emerging Technologies subprogram from 2005-2009.

  14. Sutter: Breakthrough Telescope Innovation for Asteroid Survey Missions To Start a Gold Rush In Space

    Data.gov (United States)

    National Aeronautics and Space Administration — PROBLEM: These are three primary reasons why it is important for NASA to develop better ways to locate and characterize Near Earth Objects (NEOs). First, NEOs are an...

  15. Taming sulfur dioxide: a breakthrough for its wide utilization in chemistry and biology.

    Science.gov (United States)

    Bisseret, Philippe; Blanchard, Nicolas

    2013-09-07

    Although sulfur dioxide (SO2) has been used as a reagent for organic chemistry for more than one hundred years, being endowed with quite a distinct and varied reactivity profile, which allows the synthesis of a large range of compounds, its notorious toxicity as well as its gaseous state have impeded its frequent utilization by chemists. We summarize recent studies in this emerging area aimed at stimulating its utilization in organic (including organometallic) chemistry thanks to the development of innocuous, bench-stable reliable SO2 donors. Proof-of-concept experiments have also been recently performed in biology with the design of organic SO2 donors having controlled release profiles under physiological conditions, either active against mycobacteria or used for clarifying the role of endogenously produced SO2 in living cells.

  16. Modelling small scale infiltration experiments into bore cores of crystalline rock and break-through curves

    International Nuclear Information System (INIS)

    Hadermann, J.; Jakob, A.

    1987-04-01

    Uranium infiltration experiments for small samples of crystalline rock have been used to model radionuclide transport. The theory, taking into account advection and dispersion in water conducting zones, matrix diffusion out of these, and sorption, contains four independent parameters. It turns out, that the physical variables extracted from those of the best-fit parameters are consistent with values from literature and independent measurements. Moreover, the model results seem to differentiate between various geometries for the water conducting zones. Alpha-autoradiographies corroborate this result. A sensitivity analysis allows for a judgement on parameter dependences. Finally some proposals for further experiments are made. (author)

  17. Family life clinics for Gulf state: Bahrain FPA helps bring a family planning breakthrough.

    Science.gov (United States)

    1979-01-01

    Family life clinics which will provide family planning services alongside maternal and child health services and general counseling are opening in health centers throughout Bahrain and in the main hospital at Manama. Bahrain, a small island in the Arabian Gulf, formed its first Family Planning Association (FPA) just 4 years ago; and this new initiative is seen as a direct result of cooperation between FPA and the government. To spread family planning awareness and services particularly to the poorer section of the population, Bahrain's FPA developed in various stages. Stage 1, in 1975, was to attract and educate volunteers and channel their interest into special committees dealing with programs; public relations; child welfare; legal and medical affairs; research; and conferences and education. Stage 2 came with the need to coordinate the work and set up a 2-person staff and an office. Stage 3 developed with the first field campaign. Door-to-door visiting was tried but was not popular with volunteers or residents. Approaching the population through community clubs and institutions was tried with much success. The new family life clinics are the latest stage of a fruitful cooperation between FPA and the Ministry of Labor and Social Affairs. In addition to the new family life clinics, an active effort to improve family planning awareness has continued using national seminars and mass media. Fund-raising is under way for a mobile,clinic which will provide health services and methods of contraception, to which there is still substantial resistance, to many on the island who have no exposure to the mass media. Wide acceptance of the need for family planning for the sake of mothers, the family, and the child is growing in Bahrain.

  18. Three dimensional visualization breakthrough in analysis and communication of technical information for nuclear waste management

    International Nuclear Information System (INIS)

    Alexander, D.H.; Cerny, B.A.; Hill, E.R.; Krupka, K.M.; Smoot, J.L.; Smith, D.R.; Waldo, K.

    1990-11-01

    Computer graphics systems that provide interactive display and manipulation of three-dimensional data are powerful tools for the analysis and communication of technical information required for characterization and design of a geologic repository for nuclear waste. Greater understanding of site performance and repository design information is possible when performance-assessment modeling results can be visually analyzed in relation to site geologic and hydrologic information and engineering data for surface and subsurface facilities. In turn, this enhanced visualization capability provides better communication between technical staff and program management with respect to analysis of available information and prioritization of program planning. A commercially-available computer system was used to demonstrate some of the current technology for three-dimensional visualization within the architecture of systems for nuclear waste management. This computer system was used to interactively visualize and analyze the information for two examples: (1) site-characterization and engineering data for a potential geologic repository at Yucca Mountain, Nevada; and (2) three-dimensional simulations of a hypothetical release and transport of contaminants from a source of radionuclides to the vadose zone. Users may assess the three-dimensional distribution of data and modeling results by interactive zooming, rotating, slicing, and peeling operations. For those parts of the database where information is sparse or not available, the software incorporates models for the interpolation and extrapolation of data over the three-dimensional space of interest. 12 refs., 4 figs

  19. Innovative concept for a major breakthrough in atmospheric radioactive xenon detection for nuclear explosion monitoring.

    Science.gov (United States)

    Le Petit, G; Cagniant, A; Morelle, M; Gross, P; Achim, P; Douysset, G; Taffary, T; Moulin, C

    The verification regime of the comprehensive test ban treaty (CTBT) is based on a network of three different waveform technologies together with global monitoring of aerosols and noble gas in order to detect, locate and identify a nuclear weapon explosion down to 1 kt TNT equivalent. In case of a low intensity underground or underwater nuclear explosion, it appears that only radioactive gases, especially the noble gas which are difficult to contain, will allow identification of weak yield nuclear tests. Four radioactive xenon isotopes, 131m Xe, 133m Xe, 133 Xe and 135 Xe, are sufficiently produced in fission reactions and exhibit suitable half-lives and radiation emissions to be detected in atmosphere at low level far away from the release site. Four different monitoring CTBT systems, ARIX, ARSA, SAUNA, and SPALAX™ have been developed in order to sample and to measure them with high sensitivity. The latest developed by the French Atomic Energy Commission (CEA) is likely to be drastically improved in detection sensitivity (especially for the metastable isotopes) through a higher sampling rate, when equipped with a new conversion electron (CE)/X-ray coincidence spectrometer. This new spectrometer is based on two combined detectors, both exhibiting very low radioactive background: a well-type NaI(Tl) detector for photon detection surrounding a gas cell equipped with two large passivated implanted planar silicon chips for electron detection. It is characterized by a low electron energy threshold and a much better energy resolution for the CE than those usually measured with the existing CTBT equipments. Furthermore, the compact geometry of the spectrometer provides high efficiency for X-ray and for CE associated to the decay modes of the four relevant radioxenons. The paper focus on the design of this new spectrometer and presents spectroscopic performances of a prototype based on recent results achieved from both radioactive xenon standards and air sample measurements. Major improvements in detection sensitivity have been reached and quantified, especially for metastable radioactive isotopes 131m Xe and 133m Xe with a gain in minimum detectable activity (about 2 × 10 -3  Bq) relative to current CTBT SPALAX™ system (air sampling frequency normalized to 8 h) of about 70 and 30 respectively.

  20. African American Social Work Faculty: Overcoming Existing Barriers and Achieving Research Productivity

    Science.gov (United States)

    Allen, Junior Lloyd; Huggins-Hoyt, Kimberly Y.; Holosko, Michael J.; Briggs, Harold E.

    2018-01-01

    Purpose: This study explored the scholarship experiences of top-ranked African American faculty in schools of social work. Method: Qualitative interviews were conducted with N = 10 top-ranked African American faculty identified as achieving considerable productivity and impact of scholarship. Findings: Four major themes were identified, each of…

  1. The Influence of Low Salivary Flow Rates on the Absorption of a Sublingual Fentanyl Citrate Formulation for Breakthrough Cancer Pain.

    Science.gov (United States)

    Davies, Andrew; Mundin, Gill; Vriens, Joanna; Webber, Kath; Buchanan, Alison; Waghorn, Melanie

    2016-03-01

    Salivary gland hypofunction may affect the absorption of drugs through the oral mucosa, which in turn may affect their clinical efficacy (e.g., onset of action). The aim of this study was to assess the pharmacokinetics of a sublingual fentanyl orally disintegrating tablet (Abstral, Prostrakan Inc.) in a group of cancer patients with salivary gland hypofunction. Nine cancer patients with salivary gland hypofunction underwent a series of three pharmacokinetic studies with the sublingual fentanyl orally disintegrating tablet. In the first phase, the patients received no pretreatment; in the second phase, the patients were allowed to moisten the oral cavity before dosing; in the third phase, the patients were given pilocarpine hydrochloride (saliva stimulant) before dosing. Fentanyl concentrations were measured using a method of high-performance liquid chromatography with validated tandem mass spectrometric detection. The Tmax was longer, the Cmax was lower, the AUC0-30 lower, and the AUClast lower in the phase involving no pretreatment; the Tmax/Cmax/AUC0-30/AUClast were similar in the phase involving moistening of the oral cavity and the phase involving giving pilocarpine hydrochloride. The pharmacokinetics of the sublingual fentanyl orally disintegrating tablet appear to be negatively affected by the presence of salivary gland hypofunction, although the moistening of the oral cavity before dosing results in a pharmacokinetic profile similar to that seen with the giving of pilocarpine hydrochloride. Copyright © 2016 American Academy of Hospice and Palliative Medicine. Published by Elsevier Inc. All rights reserved.

  2. Highly efficient inactivation of bacteria found in drinking water using chitosan-bentonite composites: Modelling and breakthrough curve analysis

    CSIR Research Space (South Africa)

    Motshekga, Sarah C

    2017-03-01

    Full Text Available Disinfection of bacterially-contaminated drinking water requires a robust and effective technique and can be achieved by using an appropriate disinfectant material. The advanced use of nanomaterials is observed as an alternative and effective way...

  3. Screening metal-organic frameworks by analysis of transient breakthrough of gas mixtures in a fixed bed adsorber

    NARCIS (Netherlands)

    Krishna, R.; Long, J.R.

    2011-01-01

    Metal-organic frameworks (MOFs) offer considerable potential for separating a variety of mixtures that are important in applications such as CO2 capture and H2 purification. In view of the vast number of MOFs that have been synthesized, there is a need for a reliable procedure for comparing

  4. Efficacy and Safety of Oral or Nasal Fentanyl for Treatment of Breakthrough Pain in Cancer Patients: A Systematic Review.

    Science.gov (United States)

    Rogríguez, Dulce; Urrutia, Gerard; Escobar, Yolanda; Moya, Jordi; Murillo, Maite

    2015-09-01

    Formulations of fentanyl that use buccal, sublingual, or nasal transmucosal routes of administration have been developed for the treatment of BTP in opioid-tolerant patients with cancer. The purposes of this analysis were to identify and review published data describing the efficacy and safety of different oral or nasal transmucosal fentanyl formulations for treatment of cancer-related BTP, based on a critical analysis of scientific literature. Oral transmucosal or intranasal fentanyl is an effective treatment for management of BTP episodes due to a potent analgesic effect, rapid onset of action, and sustained effect. Furthermore, it is a reasonably safe treatment, causing generally mild adverse events not leading to treatment discontinuation. Nevertheless, further progress in standardizing methodology, definitions, and criteria used both in research and in clinical practice is needed in order to generate quality information allowing a better understanding of the comparable efficacy of available formulations of fentanyl. A more rigorous assessment of long-term safety is also needed to establish a balance between benefits and risks of the available options.

  5. Achievable breakthrough: Viewpoint on the challenge of creating tsetse-free zones in Sub-Saharan Africa

    International Nuclear Information System (INIS)

    Qian Jihui; Tisue, T.

    2000-01-01

    The tsetse fly transmits trypanosomes that sicken and kill both animals and man. It is one of the major roots of poverty in countries south of the Sahara, an ecological factor that exists nowhere else in the world. The SIT is the most environment friendly pest control method. It involves mass production and systematic aerial releases of radiation-sterilized but behaviourally competent male insects, who seek out females in the wild for mating. These unproductive matings interfere with reproduction of the target population, which declines to the point where it is no longer self-sustaining, leading to eradication

  6. A modelling breakthrough for market design analysis to test massive intermittent generation integration in markets results of selected OPTIMATE studies

    DEFF Research Database (Denmark)

    Beaude, Francois; Atayi, A.; Bourmaud, J.-Y.

    2013-01-01

    The OPTIMATE1 platform focuses on electricity system and market designs modelling in order to assess current and innovative designs in Europe. The current paper describes the results of the first validation studies' conducted with the tool. These studies deal with day-ahead market rules, load fle...

  7. Stem cell research: licit or complicit? Is a medical breakthrough based on embryonic and fetal tissue compatible with Catholic teaching?

    Science.gov (United States)

    Branick, V; Lysaught, M T

    1999-01-01

    In November 1998 biologists announced that they had discovered a way to isolate and preserve human stem cells. Since stem cells are capable of developing into any kind of human tissue or organ, this was a great scientific coup. Researchers envision using the cells to replace damaged organs and to restore tissue destroyed by, for example, Parkinson's disease, diabetes, or even Alzheimer's. But, since stem cells are taken from aborted embryonic and fetal tissue or "leftover" in vitro embryos, their use raises large ethical issues. The National Institutes of Health (NIH) recently decided to fund research employing, not stem cells, but "cell lines" derived from them. The NIH has essentially made an ethical determination, finding sufficient "distance" between cell lines and abortion. Can Catholic universities sponsoring biological research agree with this finding? Probably not. In Catholic teaching, the concept of "complicity" would likely preclude such research. However, Catholic teaching would probably allow research done with stem cells obtained from postpartum placental tissue and from adult bone marrow and tissue. These cells, which lack the pluripotency of embryonic and fetal stem cells, are nevertheless scientifically promising and do not involve the destruction of human life.

  8. A Significant Breakthrough in the Incidence of Childhood Cancers and Evaluation of its Risk Factors in Southern Iran.

    Science.gov (United States)

    Erjaee, Asma; Niknam, Maryam; Sadeghi, Ahmadreza; Dehghani, Maryam; Safaei, Zeinab; Teshnizi, Saeed Hosseini; Karimi, Mehran

    2017-01-01

    This study investigates epidemiologic and practical information about the incidence and risk factors of childhood cancer in a population of Southern Iranian children. A total number of 300 cancer patients along with 600 age- and gender-matched healthy control were interviewed by a trained physician regarding their demographic characteristics, and major family-associated risk factors, childhood malignancies. The average annual percentage change for cancers in the studied population is calculated as 45%. Our study indicated that possible risk factors which could contribute to the development of childhood cancer are maternal oral contraceptive pill use during pregnancy, exposure to radiation during pregnancy, parental smoking, residence near high voltage electricity lines, exposure to pesticides and fertilizers, patient allergy, contact with domestic animals and father's educational degree. Furthermore, new ecological risk factors such as air pollution due to nonstandard petroleum or toxic inhalant particles, nonhealthy food consumption, and satellite jamming are other predisposing factors. Our study reported a higher average annual percentage change of childhood cancers in our area, compared to the existing literature. In conclusion, detection and prevention of the consistent and possible new environmental risk factors such as nonstandard petroleum or satellite jamming from all around the country should be taking into consideration.

  9. Development of Breakthrough Technology for Spaceflight Microwave Radiometers? RFI Noise Detection and Mitigation Based on the HHT2 Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Microwave active/passive radiometer is the premier instrument for remote sensing of Earth. However, it carries the price of non-linear response by its horn-receiver...

  10. A breakthrough in probiotics: Clostridium butyricum regulates gut homeostasis and anti-inflammatory response in inflammatory bowel disease.

    Science.gov (United States)

    Kanai, Takanori; Mikami, Yohei; Hayashi, Atsushi

    2015-09-01

    Intestinal immune homeostasis is regulated by gut microbiota, including beneficial and pathogenic microorganisms. Imbalance in gut bacterial constituents provokes host proinflammatory responses causing diseases such as inflammatory bowel disease (IBD). The development of next-generation sequencing technology allows the identification of microbiota alterations in IBD. Several studies have shown reduced diversity in the gut microbiota of patients with IBD. Advances in gnotobiotic technology have made possible analysis of the role of specific bacterial strains in immune cells in the intestine. Using these techniques, we have shown that Clostridium butyricum as a probiotic induces interleukin-10-producing macrophages in inflamed mucosa via the Toll-like receptor 2/myeloid differentiation primary response gene 88 pathway to prevent acute experimental colitis. In this review, we focus on the new approaches for the role of specific bacterial strains in immunological responses, as well as the potential of bacterial therapy for IBD treatments.

  11. High-throughput materials discovery and development: breakthroughs and challenges in the mapping of the materials genome

    Science.gov (United States)

    Buongiorno Nardelli, Marco

    High-Throughput Quantum-Mechanics computation of materials properties by ab initio methods has become the foundation of an effective approach to materials design, discovery and characterization. This data driven approach to materials science currently presents the most promising path to the development of advanced technological materials that could solve or mitigate important social and economic challenges of the 21st century. In particular, the rapid proliferation of computational data on materials properties presents the possibility to complement and extend materials property databases where the experimental data is lacking and difficult to obtain. Enhanced repositories such as AFLOWLIB open novel opportunities for structure discovery and optimization, including uncovering of unsuspected compounds, metastable structures and correlations between various properties. The practical realization of these opportunities depends almost exclusively on the the design of efficient algorithms for electronic structure simulations of realistic material systems beyond the limitations of the current standard theories. In this talk, I will review recent progress in theoretical and computational tools, and in particular, discuss the development and validation of novel functionals within Density Functional Theory and of local basis representations for effective ab-initio tight-binding schemes. Marco Buongiorno Nardelli is a pioneer in the development of computational platforms for theory/data/applications integration rooted in his profound and extensive expertise in the design of electronic structure codes and in his vision for sustainable and innovative software development for high-performance materials simulations. His research activities range from the design and discovery of novel materials for 21st century applications in renewable energy, environment, nano-electronics and devices, the development of advanced electronic structure theories and high-throughput techniques in materials genomics and computational materials design, to an active role as community scientific software developer (QUANTUM ESPRESSO, WanT, AFLOWpi)

  12. Participatory potato seed production: a breakthrough for food security and income generation in the central highlands of Ethiopia

    Directory of Open Access Journals (Sweden)

    Chindi Abebe

    2017-02-01

    Full Text Available Quality seed is one of the major bottlenecks hampering the production and productivity of potato not only in Ethiopia but also in Sub-Saharan Africa. Since the 1970’s, the Ethiopian Institute of Agricultural Research has generated a number of improved potato production technologies such as improved varieties with accompanying agronomic practices, crop protection measures, postharvest handling techniques and utilization options. The developed technologies were promoted from 2013-2015 via technology promotion and popularization to the Wolmera, Adea-Bera and Ejere districts with the objective of creating awareness and up scaling of improved potato production and utilization technologies. The Potato Improvement Research Program and the Research and Extension Division of Holetta Research Center in collaboration with extension staff of the Ministry of Agriculture (MoA undertake this activity. The farmers were selected and organized in Farmer Field Schools and all stakeholders were engaged before distributing potato seeds and planting on selected farmers’ fields for demonstrating of potato production technologies. A total of 899 farmers and 40 agricultural experts were trained and 27.7, 9 and 5.5 tons of quality seeds of Gudanie, Jalenie and Belete potato varieties, respectively, were delivered as a revolving seed with their recommended agronomic packages; this amount of seed covered 21.1 ha. A total of 16 farmer groups from Wolmera, 7 from Adea-Berga, and 11 from Ejere participated. They produced over 434 tons of relatively clean seed and constructed 8 diffused light stores. In addition to the demonstration of improved potato varieties, information dissemination was also an important component of the program to raise awareness for a large numbers of potato growers through farmers’ field days, pamphlets, and mass media. Each year about three field days were organized and more than 1500 pamphlets were distributed to farmers invited from neighboring districts and ‘Kebeles’ to enhance speed. Through this intervention farmers are now harvesting a yield of about 26-34 t/ha up from 8t/ha when they were using inferior quality potato seed; this has made the farmers in the intervention area more food secure especially during the usually food scarce months of August to October when cereal crops are generally yet to mature. The farmers are also getting additional income from the sale of excess potato and are able to better meet other necessary costs like school fees, for their children.

  13. Fighting global warming by greenhouse gas removal: destroying atmospheric nitrous oxide thanks to synergies between two breakthrough technologies.

    Science.gov (United States)

    Ming, Tingzhen; de Richter, Renaud; Shen, Sheng; Caillol, Sylvain

    2016-04-01

    Even if humans stop discharging CO2 into the atmosphere, the average global temperature will still increase during this century. A lot of research has been devoted to prevent and reduce the amount of carbon dioxide (CO2) emissions in the atmosphere, in order to mitigate the effects of climate change. Carbon capture and sequestration (CCS) is one of the technologies that might help to limit emissions. In complement, direct CO2 removal from the atmosphere has been proposed after the emissions have occurred. But, the removal of all the excess anthropogenic atmospheric CO2 will not be enough, due to the fact that CO2 outgases from the ocean as its solubility is dependent of its atmospheric partial pressure. Bringing back the Earth average surface temperature to pre-industrial levels would require the removal of all previously emitted CO2. Thus, the atmospheric removal of other greenhouse gases is necessary. This article proposes a combination of disrupting techniques to transform nitrous oxide (N2O), the third most important greenhouse gas (GHG) in terms of current radiative forcing, which is harmful for the ozone layer and possesses quite high global warming potential. Although several scientific publications cite "greenhouse gas removal," to our knowledge, it is the first time innovative solutions are proposed to effectively remove N2O or other GHGs from the atmosphere other than CO2.

  14. The Transrapid in Shanghai - Breakthrough for a new market?; Der Transrapid in Shanghai - Weichenstellung fuer den Weltmarkt?

    Energy Technology Data Exchange (ETDEWEB)

    Raschbichler, H.G. [Transrapid International GmbH und Co. KG, Berlin (Germany)

    2003-07-01

    On New Year's Eve 2002, the world's first commercial Transrapid superspeed maglev train started for its maiden trip in Shanghai and opened a new chapter of railroad history. In the presence of German Chancellor Gerhard Schroeder and Chinese Prime Minister Zhu Rongji on board the train, the Transrapid reached the operating speed of 430 km/h planned for scheduled operation on the 30 kilometres long route between the city center and Pudong International Airport. The constructions of the Shanghai Transrapid line and the decision on the maglev projects in Germany have given a boost to the innovative rail system. (orig.) [German] Mit der Jungfernfahrt auf der weltweit ersten kommerziellen Transrapid-Strecke in Shanghai hat am Silvester-Tag 2002 eine neue Aera des Bahnverkehrs begonnen. Mit Bundeskanzler Gerhard Schroeder und dem chinesischen Ministerpraesidenten Zhu Rongji an Bord erreichte die Magnetschwebebahn Transrapid auf der 30 Kilometer langen Strecke zwischen der chinesischen Metropole und dem Flughafen Pudong International bereits die Betriebsgeschwindigkeit von 430 km/h, die fuer den fahrplanmaessigen Betrieb vorgesehen ist. Der Bau der Transrapid-Strecke in Shanghai und die Entscheidung ueber die Magnetschwebebahn-Vorhaben in Deutschland haben dem innovativen Bahnsystem weltweit zusaetzlich Schub gegeben. (orig.)

  15. Break-through bleeding in relation to predicted factor VIII levels in patients receiving prophylactic treatment for severe hemophilia A

    NARCIS (Netherlands)

    Collins, P. W.; Blanchette, V. S.; Fischer, K.; Bjorkman, S.; Oh, M.; Fritsch, S.; Schroth, P.; Spotts, G.; Astermark, J.; Ewenstein, B.

    Background: The role of prophylactic factor VIII (FVIII) to decrease hemophilic bleeding and arthropathy is well established. The rationale for this strategy is to convert patients with severe hemophilia A to a moderate clinical phenotype by reducing time spent with a FVIII level <1 IU dL(-1).

  16. The utility of atrial pacing for identifying the electrical breakthrough sites between the left atrium and pulmonary veins

    Directory of Open Access Journals (Sweden)

    Shinya Sugiura, MD

    2017-04-01

    Conclusions: This pacing method may help to identify whether EBSs are located in the anterior Lt.PVs. Improved recognition of EBSs through pacing from different sites would be helpful for achieving PV isolation.

  17. Breakthrough in precision (0.3 percent) of neutron activation analyses applied to provenience studies of obsidian

    International Nuclear Information System (INIS)

    Asaro, Frank; Stross, Fred H.; Burger, Richard L.

    2002-01-01

    A gamma ray spectrometer at LBNL (the Luis W. Alvarez Iridium Coincidence Spectrometer), that was specifically designed for high sensitivity measurements of iridium abundances, has been significantly modified in order to provide precisions of measurement in neutron activation analysis of obsidian significantly better than previously obtained (about 1%). Repeated measurements on a single sample of obsidian from a deposit near Chivay, Arequipa, Peru, showed a precision (average coefficient of variation) of 0.19% for the 6 best-measured elements, the value anticipated from the known random errors of measurement. In measurement of samples made from 7 different obsidian nodules from two locations near Chivay, a group of 5 had a spread of 0.30% for the 6 elements measured with counting statistics of better than 0.3% (and 1.8% for the remaining 6 elements). The data suggest there are source inhomogeneity and/or sample preparation contamination errors totaling 0.24 ± .05% for the 6 best measured elements. A sixth obsidian sample could be distinguished from the main group because it differed by +0.8% for most elements, and the last sample could be easily distinguished because several elements differed by more than 1%. The precision of measurements now being developed may provide a significantly more precise determination of the provenience of obsidian artifacts than has been heretofore possible. Also the techniques of measurement developed for obsidian will provide even better precisions with pottery, as many elements are more abundant in pottery than in obsidian

  18. Exploring the limits for CO2 emission abatement in the EU power and industry sectors—Awaiting a breakthrough

    International Nuclear Information System (INIS)

    Rootzén, Johan; Johnsson, Filip

    2013-01-01

    This study assesses the prospects for presently available abatement technologies to achieve significant reductions in CO 2 emissions from large stationary sources of CO 2 in the EU up to year 2050. The study covers power generation, petroleum refining, iron and steel, and cement production. By simulating capital stock turnover, scenarios that assume future developments in the technology stock, energy intensities, fuel and production mixes, and the resulting CO 2 emissions were generated for each sector. The results confirm that the EU goal for reductions in Greenhouse Gas Emission in the sectors covered by the EU Emission Trading System, i.e., 21% reduction by 2020 as compared to the levels in 2005, is attainable with the abatement measures that are already available. However, despite the optimism regarding the potential for, and implementation of, available abatement strategies within current production processes, our results indicate that the power and industrial sectors will fail to comply with more stringent reduction targets in both the medium term (2030) and long term (2050). Deliberate exclusion from the analysis of mitigation technologies that are still in the early phases of development (e.g., CO 2 capture and storage) provides an indirect measure of the requirements for novel low-carbon technologies and production processes. - Highlights: • Explore the limits for CO 2 emission abatement within current production processes. • Analysis of scenarios for CO 2 emissions from EU power and industrial sectors 2010–2050. • Short-term (2020) emission targets are attainable with available abatement measures. • Fail to comply with more stringent reduction targets in the long term (2050). • Efforts to develop new low-carbon production processes need to be accelerated

  19. Specific methodology for capacitance imaging by atomic force microscopy: A breakthrough towards an elimination of parasitic effects

    Energy Technology Data Exchange (ETDEWEB)

    Estevez, Ivan [Laboratoire de Génie Électrique de Paris (LGEP), UMR 8507 CNRS-Supélec, Paris-Sud and UPMC Paris 06 Universities, 11 rue Joliot-Curie, Plateau de Moulon, 91192 Gif-sur-Yvette Cedex (France); Concept Scientific Instruments, ZA de Courtaboeuf, 2 rue de la Terre de Feu, 91940 Les Ulis (France); Chrétien, Pascal; Schneegans, Olivier; Houzé, Frédéric, E-mail: houze@lgep.supelec.fr [Laboratoire de Génie Électrique de Paris (LGEP), UMR 8507 CNRS-Supélec, Paris-Sud and UPMC Paris 06 Universities, 11 rue Joliot-Curie, Plateau de Moulon, 91192 Gif-sur-Yvette Cedex (France)

    2014-02-24

    On the basis of a home-made nanoscale impedance measurement device associated with a commercial atomic force microscope, a specific operating process is proposed in order to improve absolute (in sense of “nonrelative”) capacitance imaging by drastically reducing the parasitic effects due to stray capacitance, surface topography, and sample tilt. The method, combining a two-pass image acquisition with the exploitation of approach curves, has been validated on sets of calibration samples consisting in square parallel plate capacitors for which theoretical capacitance values were numerically calculated.

  20. Specific methodology for capacitance imaging by atomic force microscopy: A breakthrough towards an elimination of parasitic effects

    International Nuclear Information System (INIS)

    Estevez, Ivan; Chrétien, Pascal; Schneegans, Olivier; Houzé, Frédéric

    2014-01-01

    On the basis of a home-made nanoscale impedance measurement device associated with a commercial atomic force microscope, a specific operating process is proposed in order to improve absolute (in sense of “nonrelative”) capacitance imaging by drastically reducing the parasitic effects due to stray capacitance, surface topography, and sample tilt. The method, combining a two-pass image acquisition with the exploitation of approach curves, has been validated on sets of calibration samples consisting in square parallel plate capacitors for which theoretical capacitance values were numerically calculated