WorldWideScience

Sample records for air entwicklung validierung

  1. Entwicklung, Validierung und Anwendung einer neuen translations- und rotationsinvarianten 3D-QSAR-Methodik

    OpenAIRE

    Stiefl, Nikolaus Johannes

    2004-01-01

    Die vorliegende Arbeit beschreibt die Entwicklung und Validierung der neuartigen 3D-QSAR Technik Mapping Property Distributions of Molecular Surfaces (MaP). Die Methode ist gegenüber Translation und Rotation invariant, d. h. eine Überlagerung der Moleküle, wie sie zum Beispiel für CoMFA nötig ist, entfällt. MaP basiert auf der Charakterisierung der Moleküle nach ihrer Fähigkeit Wasserstoffbrücken auszubilden, sowie ihrer Hydrophobie / Hydrophilie. Dabei werden jedoch nicht nur die atombasiert...

  2. Fine particles and NO{sub 2}. Development and validation of a method for the immission-relevant, dynamic re-routing of traffic; Feinstaub und NO{sub 2}. Entwicklung und Validierung einer Methode zur immissionsabhaengigen dynamischen Verkehrssteuerung

    Energy Technology Data Exchange (ETDEWEB)

    Ludes, G.; Siebers, B. [simuPlan, Dorsten (Germany); Kuhlbusch, T.; Quass, U.; Beyer, M. [Institut fuer Energie- und Umwelttechnik, Duisburg (Germany); Weber, F. [Stadt Hagen (Germany)

    2010-05-15

    Due to the coming into effect of the twenty-second BImSchV comprehensive investigations on the ambient air quality have been carried out in the city of Hagen in recent years by means of measurement and modelling. High concentrations of nitrogen dioxide and respirable dust have been found along the main streets and the roads belonging to the city ring road system. Main cause of the present situation is road traffic, esp. heavy duty vehicles (HDV). Therefore the concept of measures for the implementation of the air monitoring plan and the action plan set up by the project group includes a HDV-routing system and dynamic, immission-relevant re-routing of traffic. Through this research project the practicability and the effects on air quality of the dynamic, immission-relevant re-routing of HDV-traffic will especially be examined within the highly polluted area of the ''Maerkischer Ring''. By making use of the control programme simDRIVE this innovative concept allows temporary closures of the ''Maerkischer Ring'' for HDV-traffic if transgression of critical limit values is prognosticated due to traffic volume and meteorological circumstances. During these closure periods HDV-traffic will be diverted to alternative and previously determined routes by dynamic and static traffic signs in order to guarantee that intended destinations can be reached. With the help of this research project it should be demonstrated in addition (a) if and how this particular method for NO{sub 2} can also be applied on the reduction of respirable dust, (b) how this measure affects the situation of air pollution regarding respirable dust in other parts of Hagen and (c) if the transfer of methods for the use in other cities is possible. (orig.)

  3. Quantifizierung von Aminosäuren in Infusionslösungen mittels Hochleistungsflüssigkeitschromatographie-(Tandem) - Massenspektrometrie(HPLC-[MS/]MS) Methodenentwicklung und Validierung

    OpenAIRE

    Freitag, Claudia

    2011-01-01

    Das Ziel vorliegender Arbeit war die Entwicklung einer HPLC-MS(/MS)-Methode, die im Rahmen der pharmazeutischen Qualitätskontrolle zur direkten Quantifizierung von Aminosäuren (AS) in Infusionslösungen angewendet werden kann. Die Zielset-zung schloss eine Validierung innerhalb der für die Zweckbestimmung vorgesehenen Grenzen ein. Im Rahmen der Methodenentwicklung wurde das ESI-MS/MS-Fragmentierungs-muster von 21 Aminosäuren, von 20 stabil-isotopenmarkierten Aminosäuren, die als interne Standa...

  4. Development and validation of the water hammer program DYVRO Mod.3; Entwicklung und Validierung des Druckstossprogramms DYVRO Mod. 3

    Energy Technology Data Exchange (ETDEWEB)

    Neuhaus, Thorsten; Schaffrath, Andreas; Ronneberger, Rolf [TUeV NORD SysTec GmbH und Co. KG, Hamburg (Germany); Altstadt, Eberhard [Forschungszentrum Dresden (DE). Inst. fuer Sicherheitsforschung (IFS)

    2008-07-01

    Water hammer events in piping systems develop in case of a sudden opening or closure of armatures, changes or pump rotation speeds or as consequence of pipe breaks. The propagation speed of pressure waves depend on the properties of the fluid (compressibility, density) and the mechanical properties (Young modulus, Poisson ratio) and geometry of the piping system. Water hammer effects induce very often damage of the piping and the pipe mountings. The TUeV Nord Sys Tec GmBH and Co KG has developed and qualified the water hammer program DYVRO for two-phase fluids. The contribution covers the improved version of the program DYVRO Mod3. The validation of the calculation procedure includes the Simpson experiment and experiments at the cold water hammer test facility CWHTF in Rossendorf with and without vapor lock.

  5. Die Validierung von Rechtschreibkompetenzmodellen im Rahmen einer empirisch vergleichenden Analyse orthografischer Leistungstests

    OpenAIRE

    Naujokat, Kerstin

    2015-01-01

    Diese Arbeit präsentiert die als „ZuRecht“ abgekürzte IGLU-Zusatzstudie zur Orthografie. Inhaltlich und methodisch knüpft sie an die Rechtschreibuntersuchung an, die im Rahmen der bundesweit repräsentativen IGLU-Studie für den Bereich der Grundschule vorgenommen wurde. ZuRecht erweitert die Ergebnisse zu den Schülerleistungen um die Validierung und den empirischen Vergleich der Rechtschreibtests „gutschrift-diagnose“ und „Sprachsystematischer Rechtschreibtest“ (SRT). Die Konzepte dieser b...

  6. Entwicklung investiver Produkt-Service Systeme

    Science.gov (United States)

    Schweitzer, Eric; Willenborg, Josef; Pier, Marcus; Fuchs, Christian; Jenne, Frank

    Das vorliegende Kapitel behandelt die integrierte Entwicklung investiver Produkt-Service Systeme (PSS). Ziel der PSS-Entwicklung ist es, die in der PSS-Planung (vgl. Kap. 3) gesammelten und ausgewählten Ideen im Rahmen eines PSS-Entwicklungsprojektes systematisch zur Marktreife zu bringen.

  7. 2015 DACH annual meeting. NDE in research, development and application. Abstracts; DACH-Jahrestagung 2015. ZfP in Forschung, Entwicklung und Anwendung. Vortraege

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2015-07-01

    The main topics of this meeting are: Computed Tomography; Air Ultrasound; Accreditation, certification, validation; CT algorithms; Ultrasound - imaging; Education; Digital X-ray detectors; Ultrasound - Simulation; Material characterization; Train; Phased Array; Aviation; Acoustic emission testing; Leak testing; Local defect resonance; Composite materials; Building construction; Standards and regulations; Condition and production monitoring; Surface method; POD; Renewable energy; Thermography. [German] Die Themenschwerpunkte auf dieser Tagung waren: Computertomographie; Luftultraschall; Akkreditierung, Zertifizierung, Validierung; CT Algorithmen; Ultraschall - Bildgebung; Ausbildung; Digitale Roentgendetektoren; Ultraschall - Simulation; Materialcharakterisierung; Bahn; Phased Array; Luftfahrt; Schallemissionspruefung; Dichtheitspruefung; Lokale Defektresonanz; Verbundwerkstoffe; Bauwesen; Normen und Regelwerke; Zustands- und Fertigungsueberwachung; Oberflaechenverfahren; POD; Erneuerbare Energien; Thermographie.

  8. Dynamic heat-pump test - Validation of a model and development of a testing process; Dynamischer Waermepumpentest. Validierung des Modellansatzes und Entwicklung einer Pruefprozedur: Phase 2

    Energy Technology Data Exchange (ETDEWEB)

    Hubacher, B.; Ehrbach, M.

    2001-07-01

    This final report for the Swiss Federal Office of Energy (SFOE) describes the development of a test procedure for the determination of losses caused by the switching on and off of heat pumps. The first part of the work described concerns the validation of an algorithm developed in an earlier phase of the project using experimental methods. Tests performed in a twin climatic chamber on a 10 kW heat pump are described. The resulting equations for the temperature and time-dependent functions used in determining the performance-reduction for the heat pump caused by on-off cycling are described. The second part of the work is also described that involved the development of procedures for determining the constants for the adaptation of the equations to the testing procedures. Details are given on the appropriate test procedures to be used at the Swiss heat pump testing centre at Toess.

  9. Mobile Payment und CRM - Entwicklung eines Prototyps

    OpenAIRE

    Kaiser Christian; Marfurt Konrad (Hrsg.)

    2013-01-01

    Der Beitrag zur wissenschaftlichen Fachtagung des AKWI 2013 an der technischen Hochschule Mittelhessen diskutiert die Entwicklung eines Mobile-Payment-Prototyps zur Beantwortung der Forschungsfrage "Welche Eigenschaften und Funktionen muss ein Mobile Payment System besitzen, um eine hohe Akzeptanz beim Kunden zu erreichen?".

  10. Development of a dynamic short-term test method for installed thermal solar systems; Entwicklung eines dynamischen Kurzzeittestverfahrens fuer installierte thermische Solaranlagen

    Energy Technology Data Exchange (ETDEWEB)

    Beikircher, T.; Gut, M.; Kronthaler, P.; Oberdorf, C.; Schoelkopf, W. [Bayerisches Zentrum fuer Angewandte Energieforschung, Muenchen (Germany). Abt. Solarthermie und Biomasse

    1998-12-31

    A short-term test method for in-situ measurement of the collector field, pipelines and heat exchanger of large-surface solar systems was developed at ZAE Bayern, together with the necessary technical systems (mobile acquisition of meteorological data via telemetering, non-invasive surface temperature sensors and ultrasonic volume flow measuring instruments). Dynamic measurements were made for 11 days in a large-surface solar system of the ``Solarthermie 2000`` programme using the new measuring system. In order to optimize the evaluation procedure, the plant was simulated, and the influence of different models and operating conditions during the measurements on the prediction quality was investigated in detail. On this basis, it was possible to predict the long-term collector yield of the ZfS Hilden, which was measured for a period of 7 months, with an error of less than 5%. The method will be validated in two further industrial-scale systems. [Deutsch] Am ZAE Bayern wurde ein Kurzzeittestverfahren zur insitu-Vermessung des Kollektorkreises (Kollektorfeld, Rohrleitungen, Waermetauscher) grosser Solaranlagen entwickelt. Hierzu wurde eine der Aufgabenstellung angepasste Messtechnik entwickelt (Mobile meteorologische Datenerfassung mit Funkbetrieb, nicht-invasive Oberflaechen-Temperaturfuehler und Ultraschall-Volumenstrommessgeraete). Der Kollektorkreis einer grossen Solaranlage aus dem Programm Solarthermie 2000 wurde dynamisch ueber 11 Tage (29.10.-8.11.1997) mit der neuen Messtechnik vermessen. Zur Entwicklung eines geeigneten Auswerteverfahrens wurde die Anlage simulatorisch abgebildet und der Einfluss verschiedener Modellansaetze und der Betriebsbedingungen waehrend des Mess- und Vorhersagezeitraums auf die Vorhersageguete im Detail untersucht. Mit dem entwickelten Verfahren konnte aus der dynamischen Kurzzeitvermessung der in einer Langzeitmessung der ZfS Hilden ueber 7 Monate ermittelte Kollektorertrag nach dem solaren Waermetauscher auf deutlich besser als 5

  11. Development of a practicable measuring method for continuous determination of the concentration and particle size distribution of dusts in air filter elements. Part project: Development of the scientific groundwork. Final report; Entwicklung eines feldtauglichen Messverfahrens zur kontinuierlichen Bestimmung der Konzentration und Groessenverteilung von Staeuben an Luftfiltereinsaetzen. Teilprojekt: Erarbeitung der wissenschaftlichen Grundlagen. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Weichert, R.; Rulik, O.

    1997-06-01

    Filters may be used for reducing emissions of particulate pollutants from processing plants or for air cleaning in ventilation plants. The efficiency of a filter depends on its material, design, and operating conditions, notably the concentration and size of partciles, and on its load, i.e., its working hours. The purpose of the present project was to develop an inexpensive, easy-to-use, practicable measuring method for on-line measurement of the concentration and particle size distribution of dusts upstream (raw gas) and downstream (clean gas) of filters installed in processing plants, thus providing a means of continuously monitoring filter efficiency. The measuring principle of the developed method is based on the light scatter produced by individual particles passing through the measuring zone. The particle size measuring range is from 0.3 to 30 {mu}m, thus providing for the majority of all respirable dusts. The concentration measuring range is from a few mg/m{sup 3} on the clean gas side up to several g/m{sup 3} on the raw gas side. Special measures were needed to accomodate such a wide concentration range in a single measuring device. One of tasks of the study was to develop the technology required for this. (orig./SR) [Deutsch] Zur Minderung von Emissionen partikelfoermiger Schadstoffe aus verfahrenstechnischen Anlagen sowie zur Reinhaltung der Luft in Lueftungsanlagen werden Filter eingesetzt. Die Wirksamkeit dieser Filter haengt ab - von Material und Aufbau des Filters, von den Betriebsbedingungen des Filters, insbesondere von der Konzentration und der Groesse der Partikel und - von der Beladung des Filters, d.h. von seiner Betriebsdauer. Ziel des Vorhabens ist es, ein kostenguenstiges, handliches und feldtaugliches Messgeraet zu entwickeln, mit dem in technischen Anlagen die Konzentration und Groessenverteilung von Staeuben sowohl vor dem Filter (Rohgas) als auch hinter dem Filter (Reingas) on-line gemessen und so die Wirksamkeit des Filters

  12. Orbita - Anatomy, development and deformities; Orbita - Anatomie, Entwicklung und Fehlbildungen

    Energy Technology Data Exchange (ETDEWEB)

    Hartmann, K.M.; Reith, W. [Universitaetsklinikum des Saarlandes, Klinik fuer Diagnostische und Interventionelle Neuroradiologie, Homburg/Saar (Germany); Golinski, M. [Universitaetsklinikum des Saarlandes, Homburg/Saar (Germany); Schroeder, A.C. [Universitaetsklinikum des Saarlandes, Klinik fuer Augenheilkunde, Homburg/Saar (Germany)

    2008-12-15

    The development of the structures of the human orbita is very complex, but understanding the development makes it easier to understand normal anatomy and dysplasia. The following article first discusses the embryonic development of the eye structures and then presents the ''normal'' radiological anatomy using different investigation techniques and the most common deformities. (orig.) [German] Die Entwicklung der Strukturen der menschlichen Orbita ist sehr komplex. Ihre Kenntnis erleichtert jedoch das Verstaendnis von Anatomie und Fehlbildungen. In dieser Uebersicht wird zunaechst auf die embryonale Entwicklung eingegangen, bevor die ''normale'' radiologische Anatomie bei verschiedenen Untersuchungstechniken und die haeufigsten Fehlbildungen thematisiert werden. (orig.)

  13. Research parallel to 'Solarthermie 2000'. Development of a standardized acceptance test for industrial-scale solar thermal systems. Final report; Begleitforschung Solarthermie 2000. Entwicklung eines standardisierten Abnahmeverfahrens fuer solarthermische Grossanlagen. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Beikircher, T.; Benz, N.; Gut, M.; Schwenk, C.; Schoelkopf, W.

    2000-02-01

    . 2. Ermittlung geeigneter Auswerteverfahren fuer den dynamischen in situ Kurzzeittest. 3. Entwicklung und Erprobung des Verfahrens an mehreren Grossanlagen u.a. aus dem Programm Solarthermie 2000 und Validierung gegen die Ergebnisse konventioneller Messverfahren. Das entwickelte dynamische in situ Kurzzeit-Testverfahren (ISTT-Verfahren) besteht aus sechs Schritten, die im Beitrag dargestellt werden. Grundvoraussetzung, wie fuer jedes Verfahren zur Abnahmemessung, ist ein ordnungsgemaesser Zustand der Anlage, d.h. dass grobe Anlagenmaengel (z.B. Ventile, Pumpen falsch eingebaut, zu geringer Vordruck im Solarkreis etc.) behoben sein muessen. Zwar werden bei der Anwendung des ISTT-Verfahrens in einem nullten Schritt bei einer Funktionskontrolle Anlagenfehler zuverlaessig detektiert und lokalisiert. (orig./AKF)

  14. Development, implementation and validation of a practice-orientated method for the determination of yields of biogas or methane, respectively; Entwicklung, Implementierung und Validierung eines praxisnahen Verfahrens zur Bestimmung von Biogas- bzw. Methanertraegen

    Energy Technology Data Exchange (ETDEWEB)

    Fritz, Thomas

    2008-12-15

    The increasing number of the world population results in a pronounced ascent of the world-wide energy consumption. This problem additionally is strengthened by the release of carbon dioxide. In the contribution under consideration, the author develops a method with which the yields of fermentation gas or methane, respectively, reliably as well as practice-orientated can be determined. Different influences on the determination of these yields are described. Thus, the investigations in this area are to be standardised further. The comparability under laboratories is to be increased. (orig.) [German] Die steigende Zahl der Weltbevoelkerung fuehrt zu einem Ausgepraegten Anstieg des weltweiten Energieverbrauchs. Diese Problematik wird durch die Freisetzung von Kohlendioxid zusaetzlich verstaerkt. Im vorliegenden Beitrag entwickelt der Autor eine Methode, mit der die Ertraege von Biogas beziehungsweise Methan zuverlaesslich und praxisnah bestimmt werden koennen. Es werden verschiedene Einfluesse auf die Bestimmung dieser Ertraege dargestellt. Damit sollen die Untersuchungen auf diesem Gebiet weiter standardisiert und die Vergleichbarkeit unter Laboren erhoeht werden.

  15. Development, validation and application of a process for the generation of long-term stable VOC gas mixtures; Entwicklung, Validierung und Anwendung eines Verfahrens zur Erzeugung langzeitstabiler VOC-Gasgemische

    Energy Technology Data Exchange (ETDEWEB)

    Richter, Matthias

    2010-07-01

    The development as well as the validation of a gas mixing system (GMS) that enables dynamic and traceable production of stable long-term VOC gas mixtures within the range between a few {mu}g/m{sup 3} and a few 100 {mu}g/m{sup 3}, is discussed. In this method pure liquid substances that are filled into stainless steel bottles are kept separately at a constant temperature, evaporated according to their vapour pressure and removed by a small inert gas flow. They are finally united in a gas mixing chamber. The carrier gas must be as small as possible so that the quasi-equilibrium between the gas space and the liquid phase in the substance bottles will not be disturbed. The carrier gas is assumed to be saturated with substance gas due to a long residence time in the bottles and a fast phase transition. Any concentration level of the gas mixture can be generated by a combination of vaporization temperature, carrier and dilution gas flows. With the GMS a mixture of 25 VOCs was prepared. For 16 compounds stable and reproducible gas concentrations were realized. Due to not completely removed leakage of some substance bottles and the tubing respectively, variation of the concentration of the remaining compounds was found. A sink effect as another reason for this variation could be expelled and the chemical stability of the vaporized substances proved with the exception of some aldehydes. The procedure was successfully applied in a round robin test and a material test. In the latter adsorption of VOCs on building products was scrutinized. In this way the applicability of the GMS could be shown. (orig.)

  16. Development and validation of a dispersion model for aerosols and studies on their coagulation as potential influence source; Entwicklung und Validierung eines Ausbereitungsmodells fuer Aerosole und Untersuchungen zu deren Koagulation als potentieller Einflussquelle

    Energy Technology Data Exchange (ETDEWEB)

    Lodomez, Philipp

    2010-09-15

    In the context of dispersion modelling of aerosols in the vicinity of agricultural sites the adoption of dynamical models is more and more usual. Such a model, STAR3D (Simulated Transmission of Aerosols 3D) was newly developed. It is based on the numerical evaluation of the Navier-Stokes-Equations and the subsequent calculation of the particle trajectories using the Langevin-Equation. In the course of the transmission different effects like the sedimentation, diffusion and coagulation of the particles must be considered. For the estimation of the influence of the coagulation a test chamber was build. It could be shown, that the effect of the particle coagulation can be neglected for dispersion modelling in outdoor areas. Finally a field survey was arranged to evaluate STAR3D. At twelve measurement points the mean deviation between the measured and simulated values was 24 percent. (orig.)

  17. Development of a prototype fresh-air window to be used in combination with off-air systems, especially for modernisation of multistorey apartment buildings; Entwicklung des Prototypes eines Zuluftfensters fuer den Einsatz in Verbindung mit Abluftanlagen, insbesondere bei der Sanierung von mehrgeschossigen Mietwohngebaeuden

    Energy Technology Data Exchange (ETDEWEB)

    Gronau, H.J.; Helbig, S. [Weimar Univ. (Germany). Materialforschungs- und Pruefanstalt

    1997-12-31

    Off-air systems depend on whether there is a sufficient supply of fresh air. This research project aims to develop a prototype of a fresh-air element in the form of a three-pane composite window. The state of progress, results of the numerical studies, and problems encountered are reported. (MSK) [Deutsch] Da Abluftanlagen von einer hinreichend gesicherten Zuluftversorgung abhaengig sind, ist es das Ziel dieses Forschungsvorhabens, den Prototyp eines Zuluftelements in Form eines 3-Scheiben-Verbundfensters zu entwickeln. Im Folgenden werden der Stand der Arbeiten, die Ergebnisse der numerischen Untersuchungen sowie auftretende Probleme erlaeutert.

  18. Solar-aided air conditioning through sorption. Final report. Phase 2; Solar unterstuetzte Klimatisierung ueber Sorption. Endbericht zur Phase 2

    Energy Technology Data Exchange (ETDEWEB)

    Laevemann, E.; Kessling, W.; Peltzer, M.

    1996-09-24

    The present article reports on possibilities of using solar energy for cooling buildings. It contains the following chapters: Current state of research and development; room air conditioning; planning and results of the studies; theory; experimental studies on the sorption dehumidifier; development of exchange surfaces; development of solution distributors; cooling of exchange surfaces; construction of a sorption dehumidifier. (HW) [Deutsch] Die Arbeit berichtet ueber Moeglichkeiten der Anwendung von Solarenergie zur Kuehlung von Gebaeuden. Die Arbeit enthaelt folgende Kapitel: - Stand der Forschung und Entwicklung - Raumklimatisierung - Planung und Ergebnis der Untersuchungen - Theorie - Experimentelle Untersuchungen am Sorptionsentfeuchter - Entwicklung von Austauschflaechen - Entwicklung von Loesungsverteilern - Kuehlung von Austauschflaechen - Konstruktion eines Sorptionsentfeuchters. (HW)

  19. Über den Bau und die Entwicklung der Peristonzähne bei Polytrichum

    NARCIS (Netherlands)

    van der Wijk, Roelof

    1930-01-01

    zie: Kapitel I In den folgenden Untersuchungungen habe ich mittels einer gröszeren Anzahl Schnittserien von Kapseln verschiedenier Entwicklung versucht, die Einzelheiten der Anlage ud Weiterbildung des Polytrichumperistoms möglichst genau festzustellen. ... Zie: Kapitel IX

  20. ZUR ENTWICKLUNG DES WIENER STADTRECHTS IM 13. JAHRHUNDERT

    Institute of Scientific and Technical Information of China (English)

    1994-01-01

    Die Stadt Wien erlangte im Hochmittelalter als eine wichtige mitteleuropǎische Zwischenhandelsstadt groBe Bedeutung. lhre Entwicklung verdankt der Wiener Raum dem Handelsverkehr an Donau. Der frühmittelalterliche Femhandel benutzte in erster Linie den von der Natur vorgezeichneten Weg und die von ihr geschaffene VerkehrsstraBe. Die WasserstraBe ist vor allem benutzbar, weil sie offenkundig schneller und billiger ist. Wien liegt am Kreuzungspunkt zweier damalig wichtiger StraBen: der DonaustraBe, die die Mittel Europas durchquert; der LandstraBe, die von ltalien über den Semmering nach Mǎhren und Polen ist. Die DonaustraBe ist eine bedeutende West-Ost-FluBverbindung Europas, bzw. die ǎlteste und wichtigste FernhandelsstraBe. Sie verband die westlichen Nachbaren sterreichs, vornehmlich Bayern und Schwaben, mit den wirtschaftlich noch unterentwickelten Lǎndern im Osten, z.B. Ungarn, einerseits; anderseits eine Reihe schiffbarer Nebenflüsse, durch die das Innere der Alpen miteinander verbunden und der

  1. Sustainable development caught in the globalisation trap?; Nachhaltige Entwicklung in der Globalisierungsfalle?

    Energy Technology Data Exchange (ETDEWEB)

    Mueller-Kraenner, S. [Deutscher Naturschutzring (DNR), Berlin (Germany)

    2001-07-01

    In the light of the current major paradigms and issues of economies and societies worldwide, which are globalisation and competitiveness in national and international markets, the author raises the question of whether the concept of sustainable development has any chance at all to gain a foothold in this political environment. (orig./CB) [German] Nicht das Leitbild der nachhaltigen Entwicklung praegt die weltweite Tagesordnung, sondern auf internationaler Ebene die Auseinandersetzung um Globalisierung, auf nationaler Ebene die Debatte um Standort- und Wettbewerbsvorteile. Fuenf Jahre nach Rio lautet die Frage: Ist nachhaltige Entwicklung unter den Bedingungen der Globalisierung moeglich? (orig.)

  2. Einfluss der operativen Behandlung auf die Entwicklung von Kindern mit nonsyndromaler Kraniosynostose

    OpenAIRE

    Azouz, J. (Jamila-Stephanie)

    2008-01-01

    Ziel der Studie war die Klärung der Frage, ob eine Operation die psychomotorische Entwicklung von Kindern mit nonsyndromaler Nahtsynostose positiv beeinflussen kann. Dafür wurde die Entwicklung von 52 operierten und nicht operierten Kindern untersucht. Die Entwicklungsdiagnostik wurde mit Hilfe des ET 6-6 zum Zeitpunkt der Erstdiagnostik, 0 bis 6 sowie 6 bis 12 Monate nach der Operation durchgeführt. Zunächst wurden die Daten der operierten mit denen der nicht operierten Kinder verglichen. In...

  3. Validation of analysis methods to simulate national and international impact experiments. Final report; Validierung von Analysemethoden zur Simulation von Aufprallversuchen im In- und Ausland. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Heckoetter, C.; Sievers, J.

    2012-08-15

    Within the framework of project RS1182 on ''Validierung von Analysemethoden zur Simulation von Aufprallversuchen im In- und Ausland'' the examination of different mechanical phenomena which might occur during the impact of deformable, rigid or liquid-filled missiles on robust structures was carried out. The safety-related significance of the work lies in the evaluation of the accuracy of analysis methods employed for the assessment of the load-bearing capacity of building structures subjected to intentional external hazards. In the process, simulations of selected impact tests were conducted with the analysis code ANSYS AUTODYN. Key subject of the tasks was the examination of impact tests with reinforced concrete target structures, including intermediate-scaled tests (carried out at VTT) as well as almost full-scaled tests (carried out in Meppen and at SNL). Besides the behaviour of the missiles especially the description of the damage processes of the reinforced concrete structures constituted a priority. The relevant damage mechanisms include global bending and crack formation, local concrete scabbing and spalling, punching, penetration of missile and perforation. Furthermore, effects of liquid infill of missiles on the load-time-function and structural damage were investigated. By means of bilateral co-operations with organisations at home and abroad test results were exchanged. Further, selective comparative calculations carried out within the IRIS2010 activity of the WGIAGE of CSNI of the OECD/NEA and within the frame of the VTT IMPACT project contributed to the enhancement of the accuracy of statements of the employed analysis methods. For the characterisation of impact loaded concrete the RHT-model was comprehensively tested. Basically, the simulation of the behaviour of reinforced concrete structures under impact loading exhibits dependencies on physical and numerical modelling parameters, which could also be concluded from the

  4. Validation of an Austrian forecasting model for biologically effective UV radiation (UV index); Validierung des oesterreichischen Vorhersagemodells fuer die biologisch-effektive UV Strahlung (UV Index)

    Energy Technology Data Exchange (ETDEWEB)

    Schauberger, G.; Schmalwieser, A. [Veterinaermedizinische Univ., Vienna (Austria). Inst. fuer Medizinische Physik

    1999-07-01

    liefert fuer 16 diskrete Wellenlaengen zwischen 297,5 und 380 nm die spektrale Bestrahlungstaerke. Das Modell beruecksichtigt, die Sonnenhoehe, die Seehoehe sowie den Ozongehalt der Atmosphaere. Die spektrale Bestrahlungsstaerke wird mit der spektralen Wirkungsfunktion des Erythems gewichtet, um die biologisch-effektive UV-Strahlung zu erhalten. Durch eine Normierung mit 25 mW{sub biol}/m{sup 2} erhaelt man die Masszahl fuer den UV-Index. Die Validierung erfolgte mit Messwerten, die mit Robertson-Berger Messgeraeten kontinuierlich erfasst wurden (Standort der Veterinaermedizinischen Universitaet Wien: 48 15,47'N; 16 25,98'E; Seehoehe: 153 m). Die spektrale Empfindlichkeit dieser Geraete entspricht etwa der der menschlichen Haut fuer die akute Wirkung des Erythems. Durch Verknuepfung des UV-Index mit der taeglich zu erwartenden UV-Dosis wird eine Empfehlung fuer den jeweils zu waehlenden Faktor eines Sonnenschutzmittels, aufgeschluesselt nach den photobiologischen Haupttypen, gegeben. Die Eigeninitiative des Benutzers des UV-Index wird gefordert, indem er die jeweilige Bevoelkerungssituation abschaetzen muss, um den fuer vor Ort geltenden UV-Index auszuwaehlen. Im Sinne des UV-Strahlenschutzes ist das Modell dann als mangelhalft zu bewerten, wenn der gemessene UV-Index groesser ist als der prognostizierte, das tritt in etwa 12% aller Faelle auf. Die Fehlerhaeufigkeiten fuer positive Modellfehler (prognostizierte Werte sind groesser als Messwerte) sind auf die vom Modell derzeit nicht beruecksichtigte Extinktion der UV-Strahlung durch die Bevoelkerung zurueckzufuehren. (orig.)

  5. Development of energy-efficient comfort ventilation plants with air quality controlled volume flow rate and continuous detection of the status of the windows aperture. Part 3. Final report with documentation of the field test; Entwicklung energieeffizienter Komfortlueftungsanlagen mit luftqualitaetsgefuehrter Volumenstromregelung und kontinuierlicher Erfassung des Fensteroeffnungszustandes. Teilbericht 3. Endbericht mit Dokumentation des Feldtests

    Energy Technology Data Exchange (ETDEWEB)

    Grossklos, Marc; Hacke, Ulrike [Institut Wohnen und Umwelt GmbH, Darmstadt (Germany)

    2012-10-25

    Residential ventilation systems with a heat recovery contribute to the improvement of the air quality and to the reduction of heat losses caused by ventilation. An additional opening of the windows in residential buildings results in a clearly increasing consumption of thermal heat because the thermal heat of the out coming air cannot be utilized furthermore. Continuous information on the energetic effects of the opening of windows is helpful. Under this aspect, the authors of the contribution under consideration report on the development of energy efficient comfort ventilation systems with an air quality controlled volume flow rate and continuous detection of the status of the windows aperture. The contribution under consideration is the third part of a project concerning to this theme. This part encompasses a field test with four single-family houses in which the air quality control as well as the detection of the status of the windows aperture is tested and optimized for a long period. This contribution also contains the results of the second part of the project. The second project investigate the technical implementation of a air quality regulation at prototypes and test facilities.

  6. Development of energy-efficient comfortable ventilation systems with air quality guided volume flow control and continuous monitoring of the window opening status. Part 1. Use of the LuQaS triple sensor for air quality guided volume flow control of mechanical ventilation systems in domestic buildings. Research project; Entwicklung energieeffizienter Komfortlueftungsanlagen mit luftqualitaetsgefuehrter Volumenstromregelung und kontinuierlicher Erfassung des Fensteroeffnungszustandes. Teilbericht 1. Einsatz des LuQaS-Triple-Sensors zur luftqualitaetsgefuehrten Volumenstromregelung von mechanischen Lueftungsanlagen in Wohngebaeuden. Forschungsprojekt

    Energy Technology Data Exchange (ETDEWEB)

    Grossklos, Marc; Ebel, Witta; Knissel, Jens

    2011-05-15

    The report presents the preparatory work on the research project of the above title. The first chapter presents a status report on air quality monitoring inside rooms and evaluates the projects so far in which the LuQaS air quality sensor was used. The second chapter is a documentation of preliminary measurements using the LuQaS sensor in two passive residential buildings and several individual measurements for sensor calibration. It was found that in apartments with mechanical ventilation, the sensor reflects the user activities; further, the measured values indicate signal changes also in the off-air of the building, so that control via central sensors in the ventilation and off-air systems appears feasible. The third chapter discusses control strategies for air quality control. Apart from a discussion of control unit types, operating regimes, methods to determine rated values, and additional control functions, the effects of threshold value control with different threshold limit values and volume flow changes on the air quality of a model building was simulated. The results prove the expectation that the air quality inside a building will be influenced positively by air quality control. Theoretical investigations of the DrD method will be presented in another part-report of the project.

  7. Entwicklung eines Meltblow-Verfahrens zur Herstellung thermoplastischer Feinstfaser-Vliesstoffe

    OpenAIRE

    Batt, Till

    2015-01-01

    Das Meltblow-Verfahren wird seit vielen Jahren zur Erzeugung von Mikrofaservliesstoffen im Bereich von 1,0 Mikrom. - 20 Mikrom. eingesetzt. Aus verfahrenstechnischen Gründen sind damit jedoch Faserdurchmesser unterhalb 1,0 Mikrom. bislang nur sehr begrenzt herstellbar. Dies schränkt die Effizienz und Einsatzmöglichkeiten der Meltblow-Vliesstoffmedien beispielsweise in Filtrationsanwendungen erheblich ein. Ziel dieser Arbeit ist daher die Entwicklung eines über den Stand der Technik hinausgehe...

  8. Entwicklung klinischer Methoden zur Quantifizierung der longitudinalen Relaxationszeit T1 in der MRT

    OpenAIRE

    Gensler, Daniel

    2016-01-01

    Die Aufgabenstellung in der vorliegenden Arbeit bestand in der Entwicklung und Umsetzung neuer T1-Quantifizierungsverfahren, die zuverlässig in der klinischen Routine angewendet werden können. Die ausgearbeiteten Techniken umfassten dabei zwei Hauptarbeitsschwerpunkte. Zum einen die Implementierung einer neuartigen dynamischen T1- Thermometriemethode für MR-Sicherheitsuntersuchungen medizinischer Geräte und Implantate, wie beispielsweise Kathetern oder Herzschrittmachern, und zum anderen d...

  9. Entwicklung eines kapillar gepumpten Wärmeübertragersystems für einen Mikroenergiewandler

    OpenAIRE

    2011-01-01

    Ziel des Projektes ’Mikroenergiewandlung’ ist die Entwicklung eines miniaturisierten Kraftwerks, das elektrischen Strom zur Versorgung von portablen oder mobilen elektronischen Geräten generiert. Als Energiequelle für den Mikroenergiewandler wird der flüssige Brennstoff Methanol verwendet. Der Brennstoff wird zunächst in einem Wärmeübertragersystem verdampft, mit Luft gemischt und in einer Mikrobrennkammer verbrannt. Die frei werdende Wärme wird über einen Thermogenerator in elektrischen Stro...

  10. Entwicklung eines Kostenmanagement-Systems für hybride Leistungsbündel

    OpenAIRE

    Soth, Tobias

    2011-01-01

    Gegenstand dieser kumulierten Dissertation ist die Entwicklung eines ganzheitlichen Kostenmanagement-Systems für hybride Leistungsbündel (HLB). Die Arbeit besteht aus mehreren Beiträgen, die etablierte Controlling-Instrumente zur Unterstützung eines Kostenmanagements analysieren und hinsichtlich der Anforderungen hybrider Leistungsbündel modifizieren. Es werden neue, grundlegende Erkenntnisse über eine kostenorientierte Planung, Steuerung und Kontrolle integriert entwickelter Sach...

  11. Entwicklung und Evaluation computerbasierter Trainingsaufgaben für das wissenschaftliche Schreiben

    OpenAIRE

    2006-01-01

    Wissenschaftliches Schreiben ist eine sehr komplexe Aufgabe, die eine Vielzahl unterschiedlicher Aktivitäten umfasst. Viele Studierende haben jedoch Schwierigkeiten, die damit verbundenen Anforderungen selbständig zu bewältigen. Im Mittelpunkt des Interesses der vorliegenden Arbeit stand daher die Entwicklung und Evaluation interaktiver computerbasierter Trainingsaufgaben, die Studienanfänger beim Erwerb von Grundkompetenzen des wissenschaftlichen Schreibens unterstützen. Zentrale Anliegen di...

  12. Fundamental research of development and optimization of ceramic recuperative burners. Final report; Grundlagenuntersuchung zur Entwicklung und Optimierung keramischer Rekuperatorbrenner. Schlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Brune, M.; Boss, M.; Flamme, M.; Lynen, A.; Wuenning, J.A.; Wuenning, J.G.; Dittmann, H.J.; Seltmann, M.

    1998-10-01

    A significant reduction of CO{sub 2} emissions from high temperature processes can be accomplished by means of heat recovery from the flue gases. For several years now, recuperative burners consisting of reaction-bonded silicon carbide have been available on the market for temperatures above 110 C and for service with corrosive flue gases, where chromium-nickel steels cannot be used. With support from the BMBF and the gas industry, the ceramic recuperative burners have been developed for highr outputs and efficiencies. The relative air preheating, the pressure drop on the air- and flue gas side, the flue gas emission and the production costs have been considered for the development and optimization of full ceramic recuperative burners. Parallel to the development of the new recuperative burners, calculations with the CFD-programm FLUENT have been carried out for the description of the heat transfer processes in the recuperator and the combustion processes. With the help of these calculations the development expenditure could be reduced. Due to the development of the production technical possibilities for RbSiC-components, it has been proven possible to produce recuperators with surface structures using the slip casting technique which on the one hand can be manufactured at a rational price level and, on the other, achieve a relative air preheating of up to {epsilon}=0.8. By the new burner concepts the NO{sub x} emission could be lowered under the limit of the German TA Luft even at highest air preheating temperatures. For the direct heating the ceramic recuperative burners comes into action, where high application temperatures, e.g. in furnace forges or ceramic kilns, or aggressive flue gases are present. For the indirect heating in heat treatment installations the ceramic recuperative burners are used in connection with full ceramic radiant tubes. (orig.) [Deutsch] Bei Hochtemperaturprozessen ist eine erhebliche Verringerung des CO{sub 2}-Ausstosses durch

  13. Development of energy-efficient comfortable ventilation systems with air quality guided volume flow control and continuous monitoring of the window opening status. Part 2. Theoretical investigations of the pressure difference method. Research project; Entwicklung energieeffizienter Komfortlueftungsanlagen mit luftqualitaetsgefuehrter Volumenstromregelung und kontinuierlicher Erfassung des Fensteroeffnungszustandes. Teilbericht 2. Theoretische Untersuchungen zur Druckdifferenz-Methode. Forschungsprojekt

    Energy Technology Data Exchange (ETDEWEB)

    Knissel, Jens; Grossklos, Marc [Institut Wohnen und Umwelt GmbH, Darmstadt (Germany); Werner, Johannes [Ingenieurbuero fuer Energieberatung, Haustechnik und Oekologische Konzepte GbR (eboek), Tuebingen (Germany)

    2011-05-15

    In energy-efficient buildings with mechanical ventilation and heat recovery, the heat losses of ventilation of a building can be influenced by additional open windows. This causes a significant rise in the heating demand. The Drd method (pressure difference method) assumes that the negative pressure in a building after switching off the supply air fan will depend on whether all windows are closed, or at least one window is open. In the research project under consideration the determination of the position of the window aperture using the Drd method shall be developed further. The operating conditions of the Drd method is investigated theoretically. Questions of the required building tightness and plant characteristics are clarified.

  14. Ländliche Entwicklung durch erneuerbare Energien - Das Beispiel Photovoltaik in Niederbayern

    Science.gov (United States)

    Zink, Roland

    2013-09-01

    Der Ausbau erneuerbarer Energien ist in Deutschland eine zentrale und politisch konsensfähige Forderung, um die Energieversorgung klimafreundlich und nachhaltig zu gestalten. Speziell ländliche Regionen rücken dabei in den Fokus, bieten sie doch aufgrund ihrer hohen Flächenverfügbarkeit große Potenziale für die flächenintensiven dezentralen Energieformen. Folglich erkennen Kommunen zunehmend das Entwicklungspotenzial dieser Technologien und sehen sie auch als Chance, neue wirtschaftliche Impulse vor Ort zu setzen. Der Beitrag skizziert die rasante Entwicklung der Photovoltaik im Regierungsbezirk Niederbayern und diskutiert anhand des Beispiels die Folgen für eine nachhaltige Regionalentwicklung.

  15. Die Umsetzung der VN-Agenda 2030 für nachhaltige Entwicklung: welche Signale Deutschland jetzt international setzen sollte

    OpenAIRE

    Beisheim, Marianne

    2016-01-01

    Beim Nachhaltigkeitsgipfel der Vereinten Nationen (VN) im September 2015 haben die Staats- und Regierungschefs und -chefinnen aller Mitgliedstaaten die 2030-Agenda für nachhaltige Entwicklung verabschiedet. Auch die Bundesregierung hat zugesichert, die Umsetzung rasch angehen zu wollen, sowohl in Deutschland als auch weltweit mit Partnern und deutscher Unterstützung. Kanzlerin Merkel kündigte an, ehrgeizige Umsetzungsanstrengungen bereits im Juli in New York vorstellen zu wollen. Welche Impul...

  16. New trigger algorithm of the Auger fluorescence telescopes and validation of their single electron resolution; Neuer Triggeralgorithmus der Auger-Fluoreszenzteleskope und Validierung ihrer Ein-Elektron-Aufloesung

    Energy Technology Data Exchange (ETDEWEB)

    Asch, T.

    2005-12-15

    The Pierre Auger Observatory analyses air shower events of ultra high energy cosmic rays. For the first time the two detector techniques to measure Cherenkov and fluorescence light have been combined to detect primary particle with energies >10{sup 19}eV. The raw data rate, as measured by the telescope's electronics, is in the order of 9 Gigabyte per second. A multi level trigger system, which reduces the data systematically in several levels and complexities without rejecting important shower events, is necessary. The different trigger levels are realised in hardware as well as in software. A new ansatz for the first software trigger and its functionality is developed and discussed. The trigger is based on the so far not used information of the readout electronics. The resulting trigger level is more efficient and rejects sheet lightning better compared with present trigger level. Thus, the trigger rate to the next trigger level is decreased and the DAQ system is released. Different calibration methods, which are made regularly, are essential for an experiment. The results of different calibration methods have to be consistent to each other. The single electron resolution of the photomultiplier tubes play an important role in this context. The single electron resolution is a geometry and material dependent factor and up to now only known from Monte Carlo simulations. The experimental validation through direct measurement and the importance of the single electron resolution are discussed. The measurement was possible with small modifications of the configuration. The result of the single electron resolution is within its error in good agreement with the one known from Monte Carlo simulations. The low statistical error of 4% shows a low manufacturing tolerance, so that we can assume the resolution to be constant for the type of photomultiplier tubes used. (orig.)

  17. Analyse und Vergleich von nativer Entwicklung auf dem Android-Betriebssytem mit der plattformunabhängigen Entwicklung mit dem Titanium SDK am Beispiel des Mobile SQL-Trainers

    OpenAIRE

    Spies, Matthias (Bachelor Informatik)

    2013-01-01

    Es wurde ein Vergleich zwischen einer nativen Android-Anwendung und einer Titanium-Anwendung durchgeführt, anhand einen mobilen SQL-Trainers. Die mit Eclipse nativ entwickelte Android-Anwendung und die Titanium-Anwendung (Android und iOS) sind, zumindest mit unserem beispielhaften Funktionsumfang, fast gleichwertig. Die Entwicklung für BlackBerry und Tizen konnte auf Grund der noch nicht ausgereiften Entwicklungsart für diese Plattformen kaum getestet werden, allerdings wird der größere App-M...

  18. Entwurf, Entwicklung und Inbetriebnahme eines verteilten Rechnerkontrollsystems für die Elektronen-Stretcher-Anlage ELSA, unter besonderer Berücksichtigung der Extraktion im Nachbeschleunigungsbetrieb bis 3.5 GeV

    CERN Document Server

    Picard, M

    1995-01-01

    Entwurf, Entwicklung und Inbetriebnahme eines verteilten Rechnerkontrollsystems für die Elektronen-Stretcher-Anlage ELSA, unter besonderer Berücksichtigung der Extraktion im Nachbeschleunigungsbetrieb bis 3.5 GeV

  19. Entwicklung und Inbetriebnahme eines verteilten Rechnerkontrollsystems zur Steuerung der Elektronen-Stretcher-Anlage ELSA, unter besonderer Berücksichtigung der Anforderungen des Nachbeschleunigungsbetriebs bis 3.5 GeV

    CERN Document Server

    Götz, T

    1995-01-01

    Entwicklung und Inbetriebnahme eines verteilten Rechnerkontrollsystems zur Steuerung der Elektronen-Stretcher-Anlage ELSA, unter besonderer Berücksichtigung der Anforderungen des Nachbeschleunigungsbetriebs bis 3.5 GeV

  20. Energy report for Bavaria, 1996/97. Data on the development of the Bavarian energy industry, with an energy balance; Energiebericht Bayern 1996/97. Daten zur Entwicklung der bayerischen Energiewirtschaft mit Energiebilanz

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1998-04-01

    The report presents the energy balance for Bavaria and provides information on: Bavarian energy industry; structure and development of primary and end-use energy consumption; situation and development of energy sources (electricity, gas, mineral oil, coal, district heating). (orig.) [Deutsch] Der Bericht enthaelt die Energiebilanz Bayern fuer das Berichtsjahr und bietet Informationen zur Energiewirtschaft in Bayern, zur Struktur und Entwicklung des Primaer- und Endenergieverbrauchs und zur Situation und Entwicklung bei den einzelnen Energietraegern (Elektrizitaet, Gas, Mineraloel, Kohle, Fernwaerme). (orig.)

  1. Development of a two-phase, two-component jet pump refrigerator for utilization of low-temperature solar heat. Final report; Entwicklung einer Zweiphasen-/Zweikomponenten-Strahlpumpenkaelteanlage zur Nutzung solarer Niedertemperaturwaerme. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Mostofizadeh, C.; Bohne, D.

    2001-08-01

    A solar refrigerator for air conditioning and cooling was developed. The key component is a two-phase, two-component jet pump with ammonia and water as working fluid. Both the pump flow and the suction flow can be two-phase flows. This way, the advantages of both the absorption and the compression principle will be utilized, and a compact size will be achieved. Upon termination of the calculations, the function of the pump will be investigated in a 0 W pilot plant. For this, various geometries were calculated and tested for their potential efficiencies. A prototype will be constructed on the basis of the results. [German] Das Ziel des Vorhabens besteht in der Entwicklung einer solarbetriebenen Kaelteanlage fuer Klimatisierungs- und Kuehlungszwecke. Die Hauptkomponente der Kaelteanlage ist eine Zweiphasen-/Zweikomponenten-Strahlpumpe, die mit dem Arbeitsgemisch Ammoniak/Wasser betrieben wird. Sowohl der Treib- als auch der Saugstrom koennen zweiphasig sein. Dadurch sollen einerseits die Vorteile des Absorptions- und des Kompressionsprinzips miteinander verknuepft und andererseits ein kompakter Aufbau erreicht werden. Nach Abschluss der thermodynamischen und kinetischen Berechnungen soll die Funktion der Zweiphasen-/Zweikomponenten-Strahlpumpe mit Hilfe einer Pilotanlage mit ca. 20 kW Kaelteleistung untersucht werden. Dazu werden nach Vorausberechnungen verschiedene Geometrien in Bezug auf erzielbare Wirkungsgrade getestet. Die Ergebnisse bilden die Basis fuer den Bau eines Prototyps. (orig.)

  2. Der Weg zum Java-Profi Konzepte und Techniken für die professionelle Java-Entwicklung

    CERN Document Server

    Inden, Michael

    2015-01-01

    Sie haben bereits Einiges an Erfahrung mit Java und möchten Ihre Entwicklungstätigkeit nun professionalisieren? Oder sind Sie schon auf dem Weg zum Profi, benötigen aber ein Nachschlagewerk, das Ihnen die wichtigen Themen aus der Java-Welt kompakt und kompetent vermittelt? Dieses Buch bietet eine umfassende Einführung in die professionelle Entwicklung und vermittelt Ihnen das notwendige Wissen, um stabile und erweiterbare Softwaresysteme auf Java-SE-Basis zu bauen. Praxisnahe Beispiele helfen dabei, das Gelernte rasch umzusetzen. Neben der Praxis wird viel Wert auf das Verständnis zugrunde liegender Konzepte gelegt. Dabei kommen dem Autor Michael Inden seine umfangreichen Schulungs- und Entwicklererfahrungen zugute - und Ihnen als Leser damit ebenso. Diese Neuauflage wurde durchgehend überarbeitet, aktualisiert und erweitert. Natürlich darf das aktuelle Java 8 nicht fehlen. Verschiedene Kapitel sind Java 8 und seinen Neuerungen gewidmet. Dort wird ein fundierter Einstieg in die umfangreichen Erweit...

  3. Natural gas in eastern Germany: An important factor in economic development; Erdgas in Ostdeutschland - Ein wichtiger Faktor der wirtschaftlichen Entwicklung

    Energy Technology Data Exchange (ETDEWEB)

    Eschment, W.F. [Verbundnetz Gas AG, Leipzig (Germany)

    1994-12-31

    An important role falls to this energy source in the restructuring of the energy industry in the new federal states following reunification. In 1992, only two years after work started on the establishment of a modern natural gas industry, this fuel was supplying around 11,7% of the new states` energy needs. The difficult initial economic situation, the urgency in the setting up of the natural gas supply system and the successful development of the natural gas industry in eastern Germany are described in the following article. (orig.) [Deutsch] Bei der Umstrukturierung der Energiewirtschaft in den neuen Bundeslaendern nach der Wiedervereinigung ist dem Energietraeger eine wichtige Rolle zugekommen. 1992 - also nur zwei Jahre nach Beginn des Aufbaus einer modernen Erdgaswirtschaft - hatte Erdgas einen Anteil von rund 11,7% an der Deckung des Energiebedarfes in den neuen Bundeslaendern. Die schwierige wirtschaftliche Ausgangssituation, der Zeitdruck beim Aufbau der Erdgasversorgung und die erfolgreiche Entwicklung der Erdgaswirtschaft in Ostdeutschland sind Gegenstand des folgenden Beitrages. (orig.)

  4. From eco-efficiency in overall sustainable development in enterprises; Von Oekoeffizienz zu nachhaltiger Entwicklung in Unternehmen

    Energy Technology Data Exchange (ETDEWEB)

    Weizsaecker, E.U. von; Stigson, B.; Seiler-Hausmann, J.D. (eds.)

    2001-07-01

    Eco-efficiency is achieved when goods and services satisfy human needs, increase the quality of life, at prices which are competitive and when environmental impacts and resource intensity are decreased to a degree that they are in accordance with the expected capacities of the Earth. Eco-efficiency is a management approach that allows enterprises to carry out environmental protection measures from a market-oriented point of view. Eco-efficiency shows that ecology and economy do not contradict each other. On the contrary, in combination, they present a gain for enterprises. The motto is: To produce more with less. The WBCSD and its member enterprises have agreed to make economic growth and sustainable development the guideline for their economic entrepreneurial actions. The WBCSD supports the close co-operation of the economy, government and other organizations, as it is only together that we can help sustainable development to achieve a breakthrough. (orig.) [German] Oekoeffizienz ist dann erreicht, wenn Gueter und Dienstleistungen die menschlichen Beduerfnisse befriedigen, die Lebensqualitaet erhoehen und wettbewerbsfaehige Preise aufweisen, und die oekologischen Auswirkungen und die Ressourcenintensitaet waehrend des Lebenszyklus soweit verringert werden, dass eine Uebereinstimmung mit der voraussichtlichen Belastbarkeit der Erde besteht. Oekoeffizienz steht fuer einen Managementansatz, der Unternehmen erlaubt, Umweltschutzmassnahmen unter Marktgesichtspunkten durchzufuehren. Mit Oekoeffizienz wird zum Ausdruck gebracht, dass Oekonomie und Oekologie sich nicht ausschliessen, sondern in Kombination einen Gewinn fuer Unternehmen darstellen. Das Motto lautet: Mehr mit weniger produzieren. Der WBCSD und seine Mitgliedsunternehmen haben sich darauf verstaendigt, ihr Handeln von den Prinzipien des oekonomischen Wachstums und der nachhaltigen Entwicklung leiten zu lassen. Der WBCSD unterstuetzt die enge Zusammenarbeit von Wirtschaft, Staat und anderen Organisationen

  5. Entwicklung eines E-Learning Curriculums für die medizinische Ausbildung [

    Directory of Open Access Journals (Sweden)

    Scholz, Wilfried

    2006-02-01

    Full Text Available [english] An e-learning curriculum will be developed in which content and learning systems suitable to study phases can be utilised. The development of the e-learning curriculum takes place via the connection of established e-learning offers with needs, and subsequent curricular integration. For the evaluation of e-learning offers, a quality criteria catalogue was developed which describes how learning units are embedded into the system, and of what quality they are. Standards were defined against which national and international e-learning offers could be measured. The result is a selection of offers suitable for e-learning which together form a reference directory. Through the illustration of conformity between the contents of the reference directory and requirements, on the basis of location-specific curricula and the medical subject catalogue, location-specific directories are created which represent the relevance of e-learning offers for both courses and examinations. With the location-specific e-learning directories, teachers and learners are provided with an instrument to complement courses with e-learning components. The curricular integration takes place under the influence of the results of the analysis of the target group, as well as the location-specific resources. The efficiency of the practical implementation and the location-specific requirements determine the character of each e-learning curriculum. [german] Es wird ein E-Learning Curriculum erarbeitet, in dem definiert wird, in welchen Studienabschnitten geeignete Inhalte und Lernsysteme eingesetzt werden können. Die Entwicklung des E-Learning Curriculums geschieht über die Verknüpfung von bewerteten E-Learning Angeboten mit dem Bedarf und anschließender curricularer Integration. Zur Bewertung von E-Learning Angeboten wurde ein Qualitätskriterienkatalog entwickelt, der beschreibt wie Lerneinheiten im System eingebettet und von welcher Qualität sie sind. Es wurden Standards

  6. Assessment of the emission behavior of solid-fuel furnaces, and development of fueling and control components for improvement of the fueling quality; Pruefung des Emissionsverhaltens von Feuerungsanlagen fuer feste Brennstoffe und Entwicklung feuerungs- und regelungs-technischer Bauteile zur Verbesserung der Feuerungsqualitaet

    Energy Technology Data Exchange (ETDEWEB)

    Launhardt, T.; Pontius, A.; Strehler, A.; Hurm, R.; Meiering, A.G.

    1994-12-01

    This project was dedicated to the assessment of the fueling quality of commercial domestic and agricultural furnaces. Emphasis was placed on the assessment of emissions. Certain emission reduction measures were developed, the present state of knowledge of the combustion of biogenic solid fuels was summarized, and a market analysis of furnace supplies was prepared. The three parts of this research report deal with the thermal utilization of biogenic solid fuels - literature study and market analysis of the present state of biogenic solid fuel combustion and systems engineering; the assessment of the emission behavior of solid-fuel furnaces - bench-scale stove and central heating furnace measurements; and the development of a combustion air control system which reduces the emissions of hand-fed wood-fired furnaces - development and testing of a combustion aircontrol system with flue gas sensor and fuzzy logic controller. (orig./EF) [Deutsch] Aufgabe des Vorhabens war es, die auf dem Markt angebotenen Feuerungsanlagen aus dem Hausbrand- und landwirtschaftlichen Bereich auf ihre Feuerungsqualitaet zu ueberpruefen, wobei der jeweilige Schadstoffausstoss als Hauptmerkmal zu betrachten war. Zusaetzlich sollte in gewissem Umfang Entwicklungsarbeit im Bereich emissionsmindernder Massnahmen geleistet werden. Weiterhin war eine Zusammenstellung des derzeitigen Wissensstandes ueber die Verbrennung von biogenen Festbrennstoffen sowie eine Marktanalyse ueber das Angebot von Feuerungsanlagen durchzufuehren. Der vorliegende Forschungsbericht wurde in drei Teilen mit den folgenden Einzeltiteln abgefasst: Teil I: Thermische Nutzung von biogenen Festbrennstoffen; Literaturstudium und Marktrecherche ueber den derzeitigen Stand der Verbrennungs- und Anlagentechnik von Feuerungsanlagen fuer biogene Festbrennstoffe. Teil II: Pruefung des Emissionsverhaltens von Feuerungsanlagen fuer feste Brennstoffe; Pruefstandsmessungen an Einzeloefen und Zentralheizungskesseln. Teil III: Entwicklung

  7. From the components to the stack. Developing and designing 5kW HT-PEFC stacks; Von der Komponente zum Stack. Entwicklung und Auslegung von HT-PEFC-Stacks der 5 kW-Klasse

    Energy Technology Data Exchange (ETDEWEB)

    Bendzulla, Anne

    2010-12-22

    The aim of the present project is to develop a stack design for a 5-kW HTPEFC system. First, the state of the art of potential materials and process designs will be discussed for each component. Then, using this as a basis, three potential stack designs with typical attributes will be developed and assessed in terms of practicality with the aid of a specially derived evaluation method. Two stack designs classified as promising will be discussed in detail, constructed and then characterized using short stack tests. Comparing the stack designs reveals that both designs are fundamentally suitable for application in a HT-PEFC system with on-board supply. However, some of the performance data differ significantly for the two stack designs. The preferred stack design for application in a HT-PEFC system is characterized by robust operating behaviour and reproducible high-level performance data. Moreover, in compact constructions (120 W/l at 60 W/kg), the stack design allows flexible cooling with thermal oil or air, which can be adapted to suit specific applications. Furthermore, a defined temperature gradient can be set during operation, allowing the CO tolerance to be increased by up to 10 mV. The short stack design developed within the scope of the present work therefore represents an ideal basis for developing a 5-kW HT-PEFC system. Topics for further research activities include improving the performance by reducing weight and/or volume, as well as optimizing the heat management. The results achieved within the framework of this work clearly show that HTPEFC stacks have the potential to play a decisive role in increasing efficiency in the future, particularly when combined with an on-board supply system. (orig.) [German] Ziel der vorliegenden Arbeit ist die Entwicklung eines Stackkonzeptes fuer ein 5 kW-HT-PEFC System. Dazu wird zunaechst fuer jede Komponente der Stand der Technik moeglicher Materialien und Prozesskonzepte diskutiert. Darauf aufbauend werden drei

  8. Unterrichtsentwurf: Die Entwicklung eines nationalen Identitätsbewusstseins in den von Napoleon besetzten Ländern

    Directory of Open Access Journals (Sweden)

    Natalie Fridrich

    2012-05-01

    Full Text Available Nathalie Friedrichs proposes the following lesson plan for the senior classes of the German Gymnasium (grammar-school: „Die Entwicklung eines nationalen Identitätsbewusstseins in den von Napoleon besetzten Ländern“ (The Development of a National Sense of Identity in the Countries Occupied by Napeoleon.The central question, however, is whether this new German national consciousness at the dawn of the 19th century can be traced back to Napoleon’s reign in the Rhineland region or whether it emerged during the wars of liberation as a result of a firm rejection of Napoleon.The following materials will be given to the pupils beforhand: A short preparatory text with essential background information, a pithy quote , and two historical sources, namely the appeal of Ludwig Adolf Peter Graf von Sayn-Wittgenstein to support the war of liberation, and another more francophile source by the physician Adolf Kußmaul. The latter source points in the direction of a positive experience during the time of French occupation and therefore relativises the claim of a German patriotism as a direct result of the war against France. From a didactical viewpoint, the lesson aims to develop the prerequisites for a critical analysis of historical source texts and different points of view on the topic. Finally, a table listing the respective pros and cons of the Napoleonic arguments is sketched out, visualising the perspectives of the students and leading to the final discussion, which should produce answers to the questions of the role of Napoleon for the Germans.

  9. [St. Petersburg und Livland - und die Entwicklung der estnischen Literatur : Anton Schiefner (1817-1879) und Friedrich R. Kreutzwald (1803-1882) im Briefwechsel (1853-1879)] / Felix Köther

    Index Scriptorium Estoniae

    Köther, Felix

    2015-01-01

    Arvustus: St. Petersburg und Livland - und die Entwicklung der estnischen Literatur : Anton Schiefner (1817-1879) und Friedrich R. Kreutzwald (1803-1882) im Briefwechsel (1853-1879) / bearbeitet von Hartmut Walravens. Wiesbaden : Harrassowitz, 2013. (Orientalistik-Bibliographien und Dokumentationen ; Bd. 22)

  10. Long-term perspectives of technical and social development in Germany. Visions for research and technology policy; Langfristige Perspektiven technischer und gesellschaftlicher Entwicklung in Deutschland. Visionen fuer die Forschungs- und Technologiepolitik

    Energy Technology Data Exchange (ETDEWEB)

    Baron, W.; Zweck, A.

    1995-12-01

    This publication contains six contributions discussing the medium- and long-term perspectives of technical, social and economic development in Germany. (UA) [Deutsch] Die vorliegende Publikation enthaelt 6 Vortraege, die sich mit mittel- und langfristigen Perspektiven der technischen, sozialen und wirtschaftlichen Entwicklung in Deutschland befassen. (UA)

  11. Test and validation of CFD codes for the simulation of accident-typical phenomena in the reactor containment; Erprobung und Validierung von CFD-Codes fuer die Simulation von unfalltypischen Phaenomenen im Sicherheitseinschluss

    Energy Technology Data Exchange (ETDEWEB)

    Schramm, Berthold; Stewering, Joern; Sonnenkalb, Martin

    2014-03-15

    } deflagration were performed. The simulation of H{sub 2}/steam/air mixtures and also the simulation of inhomogeneous H{sub 2} stratifications with venting are presented. - Three different experiments were calculated to compare the performance of CFX and GASFLOW. The focus of these simulations lies on the influence of coarser grids. - The model for a generic PWR containment (KONVOI) was extended by models for PARs, doors and burst discs, the condensate film at walls and different combustion limits. This improved dataset was used to simulate the H{sub 2} and steam concentration during a severe accident with hydrogen release. A comparison to a COCOSYS calculation was done. In addition a combustion simulation was performed.

  12. Development of a low-level radon reference chamber; Entwicklung einer Low-Level-Radon-Referenzkammer

    Energy Technology Data Exchange (ETDEWEB)

    Linzmaier, Diana

    2013-01-04

    The naturally occurring, radioactive noble gas radon-222 exists worldwide in different activity concentrations in the air. During the decay of radon-222, decay products are generated which are electrically charged and attach to aerosols in the air. Together with the aerosols, the radon is inhaled and exhaled by humans. While the radon is nearly completely exhaled, ca. 20 % of the inhaled aerosols remain in the lungs in one breath cycle. Due to ionizing radiation, in a chain of events, lung cancer might occur. Consequently, radon and its decay products are according to the current findings the second leading cause of lung cancer. At the workplace and in the home measurements of radon activity concentration are performed to determine the radiation exposition of humans. All measurement devices for the determination of radon activity concentration are calibrated above 1000 Bq/m{sup 3}, even though the mean value of the present investigation in Germany shows only 50 Bq/m{sup 3}. For the calibration of measurement devices in the range below 1000 Bq/m{sup 3} over a long time period, the generation of a stable reference atmosphere is presented in this work. Due to a long term calibration (t>5 days) of the measurement devices, smaller uncertainties result for the calibration factor. For the calibration procedure, a so-called low-level radon reference chamber was set up and started operation. The generation of a stable reference atmosphere is effected by means of emanation sources which consist of a radium-226 activity standard. On the basis of {gamma}-spectrometry, the effective emanation coefficient ofthe emanation sources is determined. The traceability of the activity concentration in the reference volume is realized via the activity ofthe radium-226, the emanation coefficient and the volume. With the emanation sources produced, stable reference atmospheres within the range of 150 Bq/m{sup 3} to 1900 Bq/m{sup 3} are achieved. For the realization, maintenance and

  13. Die Entwicklung der Radiofrequenzablation von Vorhofflimmern in den Jahren 2000 bis 2009 am Beispiel der Elektrophysiologie der Elisabethinen Linz

    Directory of Open Access Journals (Sweden)

    Martinek M

    2010-01-01

    Full Text Available Einleitung: Die Radiofrequenzablation (RFA von Vorhofflimmern (VHF wird seit nunmehr 10 Jahren an der Elektrophysiologie der Elisabethinen Linz erfolgreich angewendet. Ziel dieser Übersichtsarbeit ist die Aufarbeitung der Entwicklung dieser Methode in den Jahren nach der Erstbeschreibung, die Darstellung wichtiger Meilenstein-Studien sowie deren Einfluss auf die tägliche Praxis in unserem Elektrophysiologielabor. Zusätzlich sollen Verbesserungen der Methode aufgezeigt werden, welche Jahr für Jahr zu einer deutlichen Abnahme relevanter Komplikationen geführt haben und welche Thema einiger wissenschaftlichen Arbeiten unseres Labors waren. Methodik: 700 konsekutive Patienten (80 % männlich, 56 ± 10 Jahre mit medikamentös therapierefraktärem und hochsymptomatischem VHF (2,8 ± 1,3 unwirksame antiarrhythmische Medikamente wurden zwischen Dezember 2000 und Dezember 2009 bei den Elisabethinen Linz einer linksatrialen RFA unterzogen. Alle demographischen sowie prozedurbezogenen Daten wurden im zeitlichen Kontext gegenübergestellt. Bei einer Anzahl von 1,3 ± 0,5 Prozeduren pro Patient ergibt sich eine Gesamtzahl von 952 VHF-Ablationen. Ergebnisse: Gemeinsamer Endpunkt aller RFA-Prozeduren für VHF ist nach wie vor die elektrische Diskonnektion der Pulmonalvenen (PV. Wurde zu Beginn noch eine segmental ostiale PV-Isolation durchgeführt, wird heute eine weite, zirkumferenzielle Isolationslinie zur Vermeidung von PV-Stenosen bevorzugt. Die Einführung elektroanatomischer Ortungssysteme erlaubte die dreidimensionale Lokalisation des Ablationskatheters, welche bisher nur fluoroskopisch erfolgt war, mit konsekutiver Senkung der Strahlenbelastung. In weiterer Folge konnten CT- oder Ultraschalldaten mit der elektroanatomischen Information verschmolzen werden und zu einer Verbesserung des Prozedurerfolges (aktuell 78–82 % für paroxysmales und 65–73 % für persistierendes VHF bei gleichzeitiger Senkung der Komplikationsrate (aktuell um 1 % relevante

  14. Development of a knowledge-based system for mechanical testing of materials and components; Entwicklung eines wissensbasierten Systems ueber mechanische Werkstoff- und Bauteilprueftechnik

    Energy Technology Data Exchange (ETDEWEB)

    Tiegom, J.D.

    1996-12-31

    Acquisition and processing of information plays an important role in the planning, execution, and evaluation of testing tasks as well as in the planning and development of testing installations. The application of knowledge-based systems to this purpose offers specific qualitative advantages and rationalisation effects because in this way the necessary information can be collected and then selectively passed on to the materials tester or constructor of the testing machine. As the knowledge based system is user-oriented, its development comprises the following steps: definition of a consultation strategy, (overall function from the viewpoint of the user); tying in of the system with the planning phase of testing tasks and development process of testing installations; division of the system into independent modules; knowledge acquisition; and development of the module programmes. These modules comprise a knowledge translation module which interprets the acquired knowledge and maps it onto a storage model; a structure preparation module, which images network structures and defines them for the knowledge base; and a communication module which provides the interface between the user and the core of the system. (orig./MM) [Deutsch] Bei der Planung, Durchfuehrung und Auswertung von Pruefaufgaben sowie bei der Planung und Entwicklung von Pruefeinrichtungen stehen die Informationbeschaffung und -verarbeitung im Vordergrund. Die Entwicklung eines wissensbasierten Systems bietet fuer diesen Zweck besondere qualitative Vorteile und Rationalisierungseffekte, da notwendige Informationen gesammelt werden koennen und danach dem Materialpruefer oder dem Pruefmaschinenkonstrukteur gezielt vermittelt werden koennen. Fuer die Repraesentation des Wissens wird ein semantisches Netz gewaehlt. Da das wissensbasierte System anwenderorientiert ist, umfasst seine eigentliche Entwicklung die Definition einer Konsultationsstrategie (Gesamtfunktion aus der Sicht des Benutzers), die Verankerung

  15. Air Pollution

    Science.gov (United States)

    Air pollution is a mixture of solid particles and gases in the air. Car emissions, chemicals from factories, dust, ... a gas, is a major part of air pollution in cities. When ozone forms air pollution, it's ...

  16. Final report on the development of a disturbanceless NDE compact cooling device; Abschlussbericht zur Entwicklung einer stoerarmen maschinellen NDE-Kompaktkuehlung

    Energy Technology Data Exchange (ETDEWEB)

    Kaiser, G.

    2002-08-13

    The project comprised the following aspects: 1. Development of a disturbance-free, mechanized compact cooling system for a NDE measuring system on the basis of a commercial SL200-10 split stirling cooling system of AEG Infrarotmodule GmbH, Heilbronn; 2. Support of the development work at the HTSL/Hall magnetometer of Friedrich-Schiller University, Jena; 3. Measurements of HTSL/Hall magnetometer samples and thermal characterisation. [German] Im Rahmen dieses Vorhabens wurden die folgenden Aufgabenstellungen behandelt: 1. Entwicklung einer stoerarmen, maschinellen Kompaktkuehlung fuer ein NDE-Messsystem auf der Basis eines kommerziellen Split-Stirlingkuehlers SL200-10 der Firma AEG Infrarotmodule GmbH, Heilbronn, 2. Unterstuetzung der Entwicklungsarbeiten am HTSL/Hall-Magnetometer, die bei der Friedrich-Schiller-Universitaet in Jena durchgefuehrt wurden, 3. Messungen an HTSL/Hall-Magnetometer-Proben zu deren thermischer Charakterisierung. (orig.)

  17. Development of a transcritical two-stage supermarket refrigerator for deep freezing and normal cooling; Entwicklung einer transkritischen zweistufigen Supermarktkaelteanlage fuer Tief- und Normalkuehlung

    Energy Technology Data Exchange (ETDEWEB)

    Gebhardt, D.; Kruse, H. [FKW GmbH, Hannover (Germany); Schiesaro, P. [Arneg S.p.a., Campo S. Martino (Italy)

    2003-07-01

    The contribution presents the results of trial operation of a newly developed two-stage transcritical supermarket refrigerator with CO2 as working fluid.Technical problems, e.g. oil recirculation to the high-pressure compressor, were solved by modifying the design. The performance of the system was far behind the calculations. Four reasons for this were identified: First, the large oil volume inside the system. Secondly, the compressor quality was not as expected. Thirdly, excessive pressure loss in the suction line of the high-pressure compressor. And last but not least, too low suction gas superheating in the compressor. [German] Der Trend, natuerliche umweltfreundliche Kaeltemittel in der Kaeltetechnik zu verwenden, fuehrte zu der Entwicklung eines zweistufigen CO{sub 2}-Supermarktsystems mit transkritischer Arbeitsweise. Theoretische Studien wurden durchgefuehrt, um die beste Anlagenschaltung fuer den Supermarktsektor zu ermitteln. Dies fuehrte zu der Entwicklung eines optimierten Prozesses, der auf der Hochdruckseite einen zweistufigen Verdichter verwendet. Nach entsprechender Auswahl geeigneter Komponenten war es moeglich, die Anlage zu bauen und unter stabilen Bedingungen aber nur zu betreiben bei der Verwendung eines einstufigen Verdichters im transkritischen Kreislauf mit einer geringeren Kaelteleistungszahl. Viele technische Probleme wurden festgestellt, insbesondere in bezug auf die Oelrueckfuehrung zum Hochdruckverdichter und die entsprechende Gestaltung der Kaeltemaschinenanlage. Um diese Probleme zu beseitigen, war es noetig, die urspruengliche Auslegung des Systems zu veraendern. Die gemessene Kaelteleistungszahl war wesentlich niedriger als die theoretisch berechnete. Vier wesentliche Gruende koennen fuer diese reduzierte Kaelteleistungszahl festgestellt werden: Ein Grund war der Einfluss der grossen Oelmenge im System. Der zweite Grund koennte ein geringerer Verdichterguetegrad als angenommen sein. Der dritte Grund war der zu hohe Druckverlust in

  18. Institute of Toxicology. 1994 annual report on research and development; Institut fuer Toxikologie. Ergebnisbericht ueber Forschung und Entwicklung 1994

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-12-31

    beteiligten Signalprozesse. Parallel dazu wird der Versuch einer Quantifizierung und Klassifizierung der Toxizitaet umweltrelevanter Schwermetallverbindungen unternommen. Ein wesentliches Ziel der Arbeiten ist weiterhin die Aufklaerung der Pathogenese von Lungenerkrankungen durch Staeube, Gase und Gas-Staubgemische anhand der Freisetzung von Entzuendungsstoffen durch immunologische Abwehrzellen Alveolar-Makrophagen. Mit Hilfe der Atom-Kraft-Mikroskopie sollen dynamische Veraenderungen an Zellen des Bronchialtraktes mit hoher Aufloesung dargestellt werden. Durch Untersuchungen zur Lokalisation und Struktur des Fe-Mo-Kofaktors in der Nitrogenase mit der Methode der gestoerten Winkel-Korrelationen wird ausserdem ein Beitrag zum DFG-Schwerpunktsprogramm ``Bioanorganische Chemie`` geleistet. Hauptziel des Vorhabens Biophysik multizellulaerer Systeme ist die Entwicklung fortgeschrittener Zellkultursysteme, mit denen das Toxizitaetsverhalten von Zellen unter Gewebe- und Organ-nahen Bedingungen erfasst werden kann und denen sich auch bei der Herstellung von Arzneimitteln oder im Rahmen therapeutischer Anwendungen ein breites Anwendungsfeld eroeffnet. Desweiteren werden experimentelle und theoretische Arbeiten zur zellulaeren Wirkung langsam veraenderlicher elektrischer und magnetischer Felder durchgefuehrt. (orig./MG)

  19. Development of a quasidimensional multizone model for optimisation of the emission characteristics and fuel consumption of DI diesel engines. Final report; Entwicklung eines quasidimensionalen Mehrzonen-Modells zur Optimierung des Emissionsverhaltens und des Kraftstoffverbrauchs direkteinspritzender Dieselmotoren. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Stiesch, G.; Merker, G.P.

    2000-09-01

    The focus in modern diesel engines is on low fuel consumption and pollutant emissions. Computer modelling serves to reduce costly and time-consuming experiments. Models should have a valid physical basis and use only a few empirical equations in order to make it more generally valid than existing models. [German] Bei der Entwicklung moderner Dieselmotoren liegen Schwerpunkte gleichzeitig auf der Reduzierung des Kraftstoffverbrauches und auf der Reduzierung der Schadstoffemissionen. Rechenmodelle, die beide Groessen zuverlaessig berechnen koennen, tragen dazu bei, die Anzahl von zeit- und kostenintensiven experimentellen Untersuchungen zu reduzieren, und fuehren so zu einer schnelleren Entwicklung von schadstoffarmen und verbrauchsguenstigen Motoren. Das zu entwickelnde Modell soll auf einer abgesicherten physikalischen Basis stehen und mit moeglichst wenigen empirischen Gleichungen auskommen, so dass eine wesentlich verbesserte Allgemeingueltigkeit gegenueber existierenden Modellen erreicht wird. (orig.)

  20. Die Entwicklung des Zeitschriftenbestands an der Medizinischen Bibliothek der Charité in den Jahren 2005–2013 [Development of the journal holdings at the Medical Library of the Charité 2005–2013

    Directory of Open Access Journals (Sweden)

    Paepcke, Ulf

    2013-09-01

    Full Text Available [english] In 2005 the “Charité – University Medicine Berlin“ was created in its existing organizational structure by a law passed by the Berlin state parliament. The article describes the repercussions this had on the medical libraries involved with a focus on the development of the journal holdings up to 2013, how its composition has changed since then, its usage and possible future development.[german] Durch ein Berliner Landesgesetz wurde 2005 die „Charité – Universitätsmedizin Berlin“ in ihrer heutigen Organisationsform geschaffen. Der Artikel beschreibt die Auswirkungen auf die beteiligten medizinischen Bibliotheken, wobei der Schwerpunkt auf der Entwicklung des Zeitschriftenbestands bis ins Jahr 2013 liegt, seine veränderte Zusammensetzung, Nutzung und mögliche künftige Entwicklung.

  1. Entwicklung eines Monitoringverfahrens auf pollenanalytischer Basis zur Charakterisierung ökologischer Einheiten im Bereich der südbrasilianischen Mata Atlântica und Rekonstruktion der Vegetationsgeschichte des Pró-Mata Gebietes

    OpenAIRE

    Ebner, Martin

    2005-01-01

    Bei dieser Arbeit wurden Pollenanalysen als Werkzeug zur Charakterisierung und Abgrenzung verschiedener ökologischer Einheiten der südlichen Mata Atlântica genutzt. Beziehungen zwischen Vegetation und Pollenspektren sollten zur Entwicklung eines Monitoringverfahrens dienen, mit dem zum einen rezente Raumpunkte ökologisch präzise eingeordnet und zum anderen Pollenspektren aus dem Fossilbericht bestimmten Ökotypen zugewiesen werden können. Zur Kalibrierung dieses Monitoringverfahrens wurde das ...

  2. Sustainable development - theory and practice of environmental consulting. Proceedings of a seminar of Zentrale Informationsstelle Umweltberatung Bayern. Vol. 11; Nachhaltige Entwicklung - Theorie und Praxis fuer die Umweltberatung. Seminarband der Zentralen Informationsstelle Umweltberatung Bayern. Bd. 11

    Energy Technology Data Exchange (ETDEWEB)

    Koller, U.; Behling, G.; Klemmer, A.; Haury, H.J. [comps.

    1998-12-31

    On 25/26 November, 1997, Zentrale Informationsstelle, Umweltberatung Bayern held its 11th seminar under the title ``Sustainable development - theory and practice of environmental consulting. Subjects related to the Agenda 21 were discussed in lectures and workshops. [Deutsch] Am 25. und 26. November 1997 veranstaltete die Zentrale Informationsstelle, Umweltberatung Bayern ihr elftes Seminar mit dem Thema ``Nachhaltige Entwicklung- Theorie und Praxis fuer die Umweltberatung``. In Fachvortraegen und Workshops wurden Themen zur Agenda 21 behandelt. (ABI)

  3. Frauen, Bildung und Entwicklung

    Science.gov (United States)

    Nestvogel, Renate

    1987-12-01

    The author presents first steps towards a development-based concept of women's education in the industrialized countries. Some elements of this concept are: (1) planning and action in a global context, (2) the local or regional bias given to education, (3) promotion of an intercultural perspective, (4) reducing the power of structures that encourage oppression. The author's observations are based on the following propositions: the `development process' in the industrialized countries has had terrible effects all over the world and it is necessary that women also consider their roles in what the author considers to be a process of destruction. This is because women are part of the overall system and contribute to its perpetuation in the measure of their own socialization. Connections are established between the destruction of the environment and the individual, as also between the victims and assailants of racism and sexism with a view to clarifying unidentified parts of the female consciousness. Beyond this, the role of European women in the context of colonialism and the present contact between European women and their counterparts from other cultures are examined with particular attention being paid to the exercise of power and force in the family and society.

  4. Tungsten as an innovative alloy element in the development of seamless tubular steels; Wolfram als neuartiges Legierungselement bei der Entwicklung von nahtlosen Leitungsrohrstaehlen

    Energy Technology Data Exchange (ETDEWEB)

    Pardun, M. [Mannesmann Forschungsinstitut, Duisburg (Germany); Vallourec and Mannesmann Tubes, Muelheim (Germany); Kloster, G.; Koschlig, B.; Niederhoff, K. [Vallourec and Mannesmann Tubes, Duesseldorf (Germany)

    2002-07-01

    Einsatztemperaturen stabilisiert. Bei der hier beschriebenen Entwicklung wurden verschiedene Legierungsvarianten mit Wolframgehalten im Bereich von 0,25 bis 0,50% und C-Aequivalenten nach IIW zwischen 0,33 und 0,42% untersucht. Neben der generellen Untersuchung der Einsetzbarkeit von Wolfram als Legierungselement bei nahtlosen Leitungsrohrstaehlen und dem Aspekt der Stabilisierung der Streckgrenze bei erhoehten Temperaturen wurden insbesondere folgende Ziele verfolgt: Entwicklung eines Leitungsrohrstahles der API-Guetestufe X60 bis X70 mit niedrigem Kohlenstoffaequivalent (Wolfram ist nicht in den gaengigen Berechnungsformeln enthalten); Untersuchung des Einflusses von Wolfram auf die Schweissbarkeit; Verbesserung der Sauergaseigenschaften durch Ersatz von Mangan durch Wolfram (Mangan gilt als seigerungsfoerderndes Element). Im Folgenden wird die Entwicklung des neuartigen Leitungsrohrstahles von der Laborstufe bis hin zur ersten betrieblichen Anwendung auf der Pilgerstrasse Duesseldorf-Rath der Vallourec and Mannesmann Tubes erlaeutert. Neben den mechanischen Eigenschaften wird ebenso auf die Korrosionseigenschaften wie die Schweissbarkeit eingegangen. (orig.)

  5. The postnatal development of the frontal axial angle of the occipitoatlantal complex; Die postnatale Entwicklung des frontalen Kondylen-Gelenkachsenwinkels C0/C1

    Energy Technology Data Exchange (ETDEWEB)

    Sacher, R.

    2004-06-01

    Purpose: The frontal axial angle of the occipitoatlantal complex in adults is well known. Clinical radiological investigations of the infantile cervical spine indicate other proportions. Extensive radiological studies concerning the postnatal development of the frontal axial angle are unknown. Knowledge about the special biomechanical relation of the infantile cervical spine is necessary for understanding several high cervical irritation syndromes in newborns. Materials and Methods: To measure the occipitoatlantal angle C0/C1, 1016 AP radiographs of the upper cervical spine were investigated. The radiographs were obtained on female and male patients ranging from 0-10 years of age. Results: The frontal axial angle C0/C1 is distinctly flatter in infants (153 in newborns at the age 0 to 3 months) and only approaches an adult state after the 10{sup th} year of life. Conclusion: the distinctly flatter configuration of the frontal axial angle C0/C1 in newborns could be interpreted as constituting a different morphology for better adaption to the biomechanical strain of the upper cervical spine during labor. The postnatal development of the frontal axial angle of the occipitoatlantal complex is illustrated. (orig.) [German] Problemstellung: Klinisch-radiologische Beobachtungen lassen vermuten, dass sich der frontale Gelenkachsenwinkel C0/C1 beim Kind gegenueber Erwachsenen flacher darstellt. Groessere radiologische Studien zur postnatalen Entwicklung des oberen Gelenkachsenwinkels sind nicht bekannt. Die Kenntnis der anatomischen Besonderheiten der infantilen Halswirbelsaeule ist jedoch fuer deren biomechanisches Verstaendnis bei verschiedenen hochzervikalen Irritationssyndromen im Saeuglingsalter von grossem Interesse. Material und Methode: Anhand der radiologischen Auswertung von 1016 kindlichen a.-p.-Roentgenaufnahmen der oberen Zervikalregion wurde das Verhalten des oberen Gelenkachsenwinkels bei Kindern untersucht. Das Alter der Kinder lag zum Aufnahmezeitpunkt

  6. Global and local - air pollution abatement in the 21st century. Seminar No. 14 of Zentrale Informationsstelle Umweltberatung Bayern; Global und Lokal - Klimaschutz fuer das 21. Jahrhundert. Seminarband der Zentralen Informationsstelle Umweltberatung Bayern. Bd. 14

    Energy Technology Data Exchange (ETDEWEB)

    Koller, U.; Behling, G.; Rauh, K.; Haury, H.J. (comps.)

    1999-08-01

    Scientists of Germany's major climate research institutes and an expert of the world climate research programme presented current information on climate trends. They informed on the results of international efforts to prevent global warming after the Buenos Aires conference and presented global climate scenarios of the future. Further issues were local air pollution abatement (energy management, thermal insulation), communal air pollution abatement concepts, and state funding in Bavaria and elsewhere. [German] Wissenschaftler aus den bedeutendsten Instituten deutscher Klimaforschung sowie ein Vertreter des Weltklimaforschungsprogramms stellten aktuelle Erkenntnisse zur Entwicklung unseres Klimas vor. Sie informierten ueber Ergebnisse internationaler Klimaschutzpolitik nach der Klimakonferenz in Buenos Aires und praesentierten Szenarien fuer das globale Klima der Zukunft. Sie widmeten sich ausserdem Fragen des lokalen Klimaschutzes unter den Aspekten Energiemanagement, Waermeschutz und diskutierten ueber kommunale Klimaschutzkonzepte sowie Foerdermoeglichkeiten in und ausserhalb Bayerns. (orig.)

  7. Development of pressurised fluidised bed combustion technique for coal-fired gas/steam processes; Entwicklung der Druckwirbelschicht-Feuerungstechnik fuer kohlegefeuerte Gas-Dampfprozesse

    Energy Technology Data Exchange (ETDEWEB)

    Pitt, R.; Steven, H.

    1992-12-31

    The investigations for the development of the pressurized fluidized bed technique have shown that it is possible, in principle, to keep within the emission limits with the steady state pressurised fluidised bed combustion, even at low part load. However, the construction expense is considerable and the type of coal and grain size must comply relatively exactly with the design values. Not every fuel is suitable for fluidised bed combustion regarding emission. The most important parameter for emission is the temperature profile for this component, which should be as even as possible at a high temperature level. A sufficient dwell time of the gas and the particles is decisive for CO emission, where a minimum reaction time is required for both phases. (orig.) [Deutsch] Die Untersuchungen zur Entwicklung der Druckwirbelschichttechnik haben gezeigt, dass es prinzipiell moeglich ist, mit der stationaeren druckaufgeladenen Wirbelschichtfeuerung die Emissionsgrenzwerte auch bei geringer Teillast einzuhalten, allerdings ist der bauliche Aufwand erheblich und auch die Kohleart und Koernung muessen relativ genau den Auslegungswerten entsprechen. Auch hinsichtlich der Emissionen ist nicht jeder Brennstoff fuer die Wirbelschichtfeuerung geeignet. Wichtigster Einflusspartner auf die Emission ist auch bei dieser Komponente das Temperaturprofil, das moeglichst gleichmaessig auf hohem Temperaturniveau liegen sollte. Ausreichende Verweilzeit des Gases und der Partikel sind fuer die CO-Emission entscheidend, wobei fuer beide Phasen eine Mindestreaktionszeit erforderlich ist. (orig.)

  8. Recycling-oriented development of engineered product 2000. Management of complex, conflicting targets. Conference; Recyclingorientierte Entwicklung technischer Produkte 2000. Management komplexer Zielkonflikte. Tagung

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-07-01

    This conference focused on practically orientated product development processes that enable efficient management of multiple conflicting targets without neglecting the recycleablility of the products. Further aspects were criteria, methods and evaluation methods as well as the practically orientated application of design rules to achieve innovative, marketable products. Subjects: Methods and instruments - recycling for added value - decision aids - analysis and evaluation - design for environment - the draft regulation VDI 2243, No. 1, 'Recycling-orientated product development'. [German] Themenschwerpunkte dieser von der VDI-Gesellschaft Entwicklung Konstruktion Vertrieb (VDI-EKV) gemeinsam mit der VDI-Koordinierungsstelle Umwelttechnik (VDI-KUT) initiierten Tagung waren zum einen neuangelegte 'praxisorientierte Produkentwicklungsprozesse' ('PEP's'), die es gestatten, vielfaeltige 'Zielkonflikte' effizient zu managen, ohne dabei die Recyclingfaehigkeit der Produkte unter den Tisch fallen zu lassen. Darueber hinaus stand die Anwendung geeigneter Kriterien, Methoden und Bewertungsansaetze sowie die praxisorientierte Umsetzung von Gestaltungsregeln in innovative und marktfaehige Produkte im Mittelpunkt der Vortragsveranstaltung. Den Tagungsrahmen bildeten die Themenschwerpunkte: - Methoden und Instrumente - Wertschoepfung durch Recycling - Entscheidungshilfen - Analyse und Bewertung - Design for Environment sowie der neue Richtlinienentwurf (Gruendruck) VDI 2243, Blatt 1 'Recyclingorientierte Produktentwicklung'. (orig.)

  9. Bente Knoll, Elke Szalai: Frauenwege – Männerwege. Entwicklung von gendersensiblen Mobilitätserhebungen. Wien: Bundesministerium für Verkehr, Innovation und Technologie 2008.

    Directory of Open Access Journals (Sweden)

    Gabriele Sturm

    2009-11-01

    Full Text Available Der vorliegende Band ist typisch für Ressortforschung, bei der ein gesellschaftliches Interesse mit dem Handlungshorizont eines Ministeriums verknüpft wird. Über solch eine externe Beschränkung hinaus weist die Studie leider auch zahlreiche interne Einschränkungen infolge handwerklich schlecht eingesetzter Methoden oder unzureichender konzeptioneller Bezogenheit der verschiedenen Forschungsschritte auf. So überzeugt weder die transdisziplinäre Verknüpfung von Wissenschaft, Planung und Politik im Rahmenkonzept noch das interdisziplinäre Zusammenwirken der unterschiedlichen (Unter- Auftragnehmerinnen für den eigentlichen Forschungszweck – die Entwicklung und Prüfung eines gendersensiblen Mobilitätsfragebogens – und auch die Präsentation der Studie erfüllt nicht die Mindeststandards.The volume at hand is typical for strategic research in that it connects social interest to a governmental ministry’s sphere of action. Beyond such external limitations, the study unfortunately also displays multiple internal limitations due to poorly executed methods or inadequately conceived relationships between the various research steps. Because of this, the volume’s framing concept that includes transdisciplinary connections between science, planning, and politics remains inadequate. In addition, the interdisciplinary collaboration between the different (under agents for the volume’s stated research purpose – the development and testing of a gender-sensitive questionnaire on mobility – and the presentation of this study does not fulfill minimum standards.

  10. Development of highly efficient large-area a-Si PV module. Final report; Entwicklung hocheffizienter grossflaechiger a-Si-Photovoltaikmodule. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Ruebel, H.; Frammelsberger, W.; Lechner, P.; Geyer, R.; Schade, H.; Psyk, W.

    1998-06-01

    This project was focused on the development of stable PV modules based on a-Si, and on the process transfer from a laboratory scale to a large-area production level. Central to these efforts is the economic relevance that requires reasonable module efficiencies obtained with high throughput and yield. Our modules contain p-i-n/p-i-n (a-Si/a-Si) cell structures that are based on deposition procedures developed at ISI, i.e. low-temperature deposition and high hydrogen dilution for the top cell, and microdoping between the p-layer and the buffer layer for the cottom cell. The maximum stabilized (1800 h) module efficiency obtained by production-relevant processes is 6.5% for the aperture area of 5445 cm{sup 2}. (orig.) [Deutsch] Die Arbeiten im Rahmen des Projekts konzentrierten sich auf die Entwicklung moeglicht stabiler a-Si-PV-Module und auf die Umsetzung vorhandener Labortechniken in einen industriellen Fertigungsmassstab. Mitbestimmend fuer die Entwicklungsarbeiten war die kommerzielle Relevanz, die brauchbare Modulleistungen verknuepft mit hohem Durchsatz bei hoher Ausbeute. Die Basis fuer unsere jetzige Zellstruktur im Modul sind die a-Si/a-Si-(p-i-n/p-i-n)-Technologie und die Technologiekonzepte des ISI (Tieftemperaturabscheidung bei hoher H-Verduennung fuer die Topzelle sowie Feindotierung des Uebergangs von der p-Schicht in den Puffer hinein fuer die Bottomzelle). Das beste mit einem fertigungsrelevanten Prozess hergestellte Modul erreicht nach 1800 h Lichtalterung einen stabilisierten Aperturwirkungsgrad von 6.5%. (orig.)

  11. Mycotic aneurysm of the superior mesenteric artery after septic embolism; Entwicklung eines mykotischen Aneurysmas der A. mesenterica superior nach septischer Embolie

    Energy Technology Data Exchange (ETDEWEB)

    Schmidt, F.; Dinkel, H.P. [Institut fuer Diagnostische Radiologie, Inselspital, Universitaetsklinik Bern (Switzerland)

    2002-07-01

    Mycotic aneurysms of the aorta and the visceral arteries are life-threatening diseases, due to potential rupture and organ or limb ischemia. They occur in endocarditis, immunodeficiency, bacteremia and fungemia, and have a poor prognosis.We report on a case of a 54-year-old male patient suffering from abdominal angina after mitral valve replacement for septic mycotic endocarditis. In presence of a mycotic-embolic occlusion of the left popliteal artery and multiple septic organ infarctions a mycotic aneurysm of the superior mesenteric artery was found in abdominal spiral-CT.Based on sequential spiral-CT examinations, this case demonstrates the development of a septic aneurysm of the superior mesenteric artery. (orig.) [German] Mykotische Aneurysmen der Aorta und ihrer Aeste stellen wegen Rupturgefahr und moeglicher Minderperfusion von Organen und Extremitaeten eine lebensgefaehrliche Erkrankung mit unguenstiger Prognose dar. Beguenstigende Faktoren sind geschwaechte Immunabwehr, Endokarditis, Bakteriaemie und Fungaemie.Wir berichten ueber einen 54-jaehrigen Patienten, der nach einem Mitralklappenersatz bei mykotischer Endokarditis zunehmende abdominelle Beschwerden im Sinne einer Angina abdominalis entwickelte. Die abdominelle Spiralcomputertomographie zeigte ein mykotisches Aneurysma der A. mesenterica superior. Daneben bestanden ein mykotischer Verschluss der linken A. poplitea und multiple septische Organinfarkte.Der Fall demonstriert anhand sequentieller Computertomographien eindrucksvoll die Entwicklung eines septischen Viszeralarterienaneurysmas. (orig.)

  12. The Regional Court of Bielefeld limits the maximum office room temperature to 26 C. Documentation of the evolution and legal basis of recent case law on indoor climate in the context of the German Workplace Ordinance and workplace standards; Das Bielefelder Klimaurteil fordert maximal 26 C in Bueros. Eine Dokumentation zur Entwicklung und Begruendung der neuen Klima-Rechtsprechung im Kontext der Arbeitsstaettenverordnung und Arbeitsstaettenrichtlinien sowie dessen Folgen fuer die TGA-, Bau- und Immobilienwirtschaft

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-11-01

    This exhaustive documentation presents background information and discusses the reasons underlying the ruling of the Bielefeld Regional Court, on indoor climate and thermal comfort at the place of work. The labor law dimensions of this ruling are highlighted in the context of the German workplace ordinance, (ArbStaettenV), technical standards laid down in the accompanying regulations, (ASR), the resulting rights of employees (health aspects), and the implications for architects, air conditioning system vendors, the building industry and primary contractors, and real estate management companies (compliance aspects and civil liability). Additional information, such as anonymized copies of earlier rulings of various other regional courts on the same topic, newspaper clippings and statements of lawyers, underlines the significance of this ruling. (orig./CB) [German] Diese sehr umfangreiche Dokumentation befasst sich mit den Hintergruenden und der Entwicklung des 'Bielefelder Klimaurteils', dessen arbeitsrechtlichen Dimensionen im Kontext der bestehenden Arbeitsstaettenverordnung (ASV) und der Arbeitsstaettenrichtlinien und den dadurch entstehenden Rechtsanspruechen der Arbeitnehmer, (gesundheitliche Aspekte), sowie den Konsequenzen (u.a. Haftung) fuer Architekten, Planer, Anlagenbauer, Generalunternehmer, Bauunternehmer und die Immobilienwirtschaft. Anonymisierte Kopien von Gerichtsurteilen aus der Vergangenheit zum Thema Raumklima am Arbeitsplatz, Zeitungsausschnitte und Einschaetzungen von Rechtsanwaelten bieten einen guten Ueberblick ueber die Entwicklungsschritte in der Rechtsprechung und die Bedeutung dieses Gerichtsurteils. (orig./CB)

  13. Development of renewable energy sources in Germany 2014. Charts and figures based on statistical data from the working group on renewable energy-statistics (AGEE-Stat); Entwicklung der erneuerbaren Energien in Deutschland im Jahr 2014. Grafiken und Diagramme unter Verwendung aktueller Daten der Arbeitsgruppe Erneuerbare Energien-Statistik (AGEE-Stat)

    Energy Technology Data Exchange (ETDEWEB)

    Nieder, Thomas; Bickel, Peter; Musiol, Frank (comps.) [Zentrum fuer Sonnenenergie- und Wasserstoff-Forschung Baden-Wuerttemberg (ZSW), Stuttgart (Germany)

    2015-12-15

    The more than 30 diagrams and graphs describe the development of the importance of renewable energy in Germany by the year 2014. Also, discusses the development of avoided greenhouse emissions through renewable energies, as well as the investments and their economic impulses for Germany. Some technical terms are conclusively explained in a glossary. [German] Die mehr als 30 Diagramme und Graphiken beschreiben die Entwicklung der Bedeutung der erneuerbaren Energien fuer Deutschland bis zum Jahr 2014. Auch wird auf die Entwicklung der vermiedenen Treibhaus-Emissionen durch erneuerbare Energien, sowie die Investitionen und deren wirtschaftlichen Impulse fuer Deutschland eingegangen. Einige Fachbegriffe werden abschliessend in einem Glossar erlaeutert.

  14. Development of a biotechnological process for the treatment of acid mine drainages. Final report; Entwicklung eines biotechnischen Verfahrens zur Behandlung saurer, sulfat- und metallhaltiger Waesser. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Tommerdich, D.; Pfeifer, F.; Schacht, S. [DMT-Inst. fuer Chemische Umwelttechnologie, Essen (Germany)

    1992-05-01

    This project was to develop a biotechnological process for the simultaneous removal of metals and sulfate from acid mine drainage. The metabolic capability of sulfate reducing bacteria was used to convert sulfates to sulfides which will induce the precipitation of metal ions as metal sulfides. Stages of the developed water treatment process should be characterized and proved for application with original waste water in laboratory scale. A sulfate reducing consortium was enriched and characterized due to its relevant growth requirements like substrate spectrum of complex and defined carbon sources, pH and temperature optimum and sulfide tolerance. The stoichiometric quotient of substrate conversion to sulfate reduction which is an important cost factor was estimated in batch and continuous cultures. For continuous cultivation a fixed bed reactor with external loop was used. The pH-shift formed during growth of the sulfate reducing bacteria was used to develop a pH auxostatic regulation system which improves process safety of continuous cultivation. As a method for biomass estimation a new enzymatic assay based on bioluminescent estimation of APS-reductase, a key enzyme of desulfuricants, was developed and tested for its applicability. Precipitation of metals was carried out in a separate reactor stage. The precipitation was preferentially efficient using gaseous H{sub 2}S rather than Na{sub 2}S as reactant resulting in a better flocculation and crystallization of the product. The complete configuration of bioreactor and precipitation stage was tested with original acid drainage from an old coal mining field. With lactic acid as carbon source and a hydraulic retention time of 7.6 h a sulfate reduction rate of 9 g/l/d was obtained. The sediment contained 30% of solid phase which after drying could be characterized as machinavite. [Deutsch] Ziel des Forschungsvorhabens war die Entwicklung eines biotechnischen Verfahrens, in welchem Sulfat durch mikrobielle Reduktion zu

  15. 3D-visualization in mine planning. Development, current status and prospects; 3D-Visualisierung in der Bergbauplanung. Entwicklung, Stand und Perspektiven

    Energy Technology Data Exchange (ETDEWEB)

    Drebenstedt, C.; Grafe, R. [TU Bergakademie Freiberg (Germany). Inst. fuer Bergbau

    2001-06-01

    The visualization of spatial information is of particular significance in mining. The more realistically geological and mining models can be visualized, the more convincingly they can be conveyed. This, in turn, results in improvements as regards the speed, the reliability and the quality of the planning. Errors can thus be avoided during the planning preparations and safety aspects can be taken into account much better, so that an overall positive economic effect is achieved. Moreover, the idea of a certain mining project can be introduced much more realistically to others who are normally not involved in mining so much, which leads to better understanding, confidence and eventually acceptance. An auto-stereoscopic display (developed by the Technical University Dresden) for a genuine 3D visualization of mine planning processes was introduced at the Freiberg Mining University on March 29, 2000 for the first time in the world. This innovative technology opens up completely new opportunities for using graphic software in the field of mine planning. (orig.) [German] Der Visualisierung von raeumlichen Informationen kommt im Bergbau eine besondere Bedeutung zu. Je realistischer geologische und bergbauliche Modelle veranschaulicht werden koennen, desto ueberzeugender lassen sie sich vermitteln, Verbesserungen in Schnelligkeit, Zuverlaessigkeit und Qualitaet der Planung sind die Folge. Dies traegt dazu bei, Fehler in der planerischen Vorbereitung zu vermeiden, Sicherheitsaspekten im Bergbau staerker Rechnung zu tragen und insgesamt positive wirtschaftliche Effekte zu erzielen. Darueber hinaus kann Aussenstehenden ein realitaetsnahes Bild eines bergbaulichen Vorhabens vermittelt werden, was zu mehr Verstaendnis, Vertrauen und Akzeptanz fuehrt. Als weltweite Premiere wurde am 29. Maerz 2000 an der TU Bergakademie Freiberg der Einsatz eines autostereoskopischen Displays (Entwicklung der TU Dresden) fuer echte 3D-Visualisierung in der Bergbauplanung vorgestellt. Diese

  16. VERMEIL. Methods for knowledge based development of reliable process controll system. Final report; VERMEIL. Verfahren und Methoden zur wissensbasierten Entwicklung zuverlaessiger Leitsysteme. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Goetze, B.; Plessow, M.; Pocher, M.

    1998-12-29

    The goal of the VERMEIL project was to increase the quality of process control systems by using knowledge based methods. One important aspect therein is the quality of the documentation describing the control system. The research done in the subproject of the Society for the Promotion of Applied Computerscience (GFal) produced a basis for the development of graphical editors of a special kind. These graphical editors can be used to create classes of schematic drawings. There were two major aspects concerning the development of graphical editors. First, the editors should provide advanced graphical support. That includes automation of the layout of schematic drawings. Second, the editors should automatically lead to correct structures within the schematics, therefore making certain that the created document is semantically correct, also. Apart from the theoretical and conceptional research, some automated layout algorithms were created in the project. A new prototype of an intelligent graphical editor came into existence, that proves the results of the VERMEIL project and shows the necessity of such a project. (orig.) [Deutsch] Das Ziel des Projektes VERMEIL bestand darin, die Qualitaet von Prozessleittechnik durch den Einsatz von wissensbasierten Methoden waehrend ihrer Projektierung zu erhoehen. Ein Aspekt dabei ist die Qualitaet der Dokumentation, die eine Anlage beschreibt. Im Teilprojekt der GFal wurden deshalb Untersuchungen durchgefuehrt, die die methodischen Grundlagen fuer die Entwicklung spezieller grafischer Editoren fuer die Herstellung von Klassen schematischer Darstellungen schufen. Dabei spielen zwei Aspekte eine grosse Rolle. Einmal sollen diese Editoren in der Lage sein, dem Benutzer weitgehende grafische Unterstuetzungen zu geben. Das dabei erreichte Ziel beinhaltet eine umfassende automatisierte Layoutunterstuetzung beim Erstellen von grafischen Dokumenten. Ferner ist dafuer zu sorgen, dass die entstehenden Zeichnungen zu strukturell korrekten

  17. Delphi report 1995 on developments in science and technology. Mini Delphi; Delphi-Bericht 1995 zur Entwicklung von Wissenschaft und Technik. Mini-Delphi

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-03-01

    In August 1993 the first German `Delphi Report on Developments in Science and Technology` was published. It was elaborated by the Fraunhofer Institute for System Engineering and Innovation Research (FhG-ISI) in cooperation with the Japanese National Institute of Science and Technology Policy (NISTEP). The `MINI-DELPHI` now completed by FhG-ISI, again in cooperation with NISTEP, is a further development of the Delphi approach in that it is more differentiated in its questions and assessment criteria than its predecessors. `MINI-DELPHI` is not intended as a comprehensive forecast on technology in general but rather focusses on key topics. Its emphasis is on technology demand and the relevance of technologies to social issues. Although the Mini-Delphi study was primarily aimed at further refining the methodology employed, it nevertheless contains a wealth of information and details on circumscript questions. The requisite database is provided by tables on the results of two inquiry rounds among Japanese and German experts. (orig./RHM) [Deutsch] Im August 1993 wurde der erste deutsche `Delphi-Bericht zur Entwicklung von Wissenschaft und Technik` veroeffentlicht. Er war vom Fraunhofer-Institut fuer Systemtechnik und Innovationsforschung (FhG-ISI) in Zusammenarbeit mit dem japanischen National Institute of Science and Technology Policy (NISTEP) erarbeitet worden. Mit dem jetzt vorliegenden `MINI-DELPHI` hat das FhG-ISI - wieder in Zusammenarbeit mit dem NISTEP - den Delphi-Ansatz fortentwickelt und sowohl hinsichtlich der Fragen als auch der Beurteilungskriterien weiter ausdifferenziert. `MINI-DELPHI` bezweckt keine umfassende Technologievorausschau, sondern konzentriert sich auf Schluesselthemen. Im Vordergrund steht der Gedanke des Technikbedarfs und die Relevanz fuer gesellschaftliche Fragestellungen. Obwohl die Mini-Delphi-Studie vorrangig der Weiterentwicklung der Methodik dient, enthaelt sich eine Fuelle von Informationen und Details zu Einzelfragen. Die im Bericht

  18. Long term program phototronics for evaluation and development of innovative technologies in the field of amorphous silicon. Final report; Langfrist-F und E-Programm Phototronics zur Evaluierung und Entwicklung innovativer Technologien im Bereich des amorphen Siliziums. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Ruebel, H.; Schade, H.; Lechner, P.; Frammelsberger, W.; Psyk, W.; Geyer, R.

    1997-06-01

    The program objective aims at complementing the PST pilot program by developing advanced innovative technologies for large-area solar modules. These include process developments for PECVD, materials, and cell and module fabrication based on p-i-n single cells and p-i-n/p-i-n tandem cells. The cell design relies on the individual layer materials, as well as on the interfaces between these materials, and the development of additional buffer and bandgap grading layers. To date, the best stabilized module efficiency, obtained in pilot production, has reached 6.7% with respect to an aperture area of 5445 cm{sup 2}. (orig.) [Deutsch] Das Programm zielte darauf ab, in Ergaenzung und Zuarbeit zu dem PST-Pilotprogramm weiterfuehrende innovative technologische Konzepte fuer die Herstellung grossflaechiger Solarmodule zu bearbeiten. Es umfasst die Aufgabenstellungen PECVD-Abscheideprozessentwicklung, Material- und Device-Entwicklung sowie Modulentwicklung. Ausgangspunkte sind die a-Si-Einzel- oder Einfachzelle mit p-i-n-Struktur und deren Konstituenten (Einzelschichten), der naechste Schritt ist die Entwicklung einer a-Si-/a-Si-Tandemzelle. Dabei ist bei allen Entwicklungsschritten wichtig, die jeweiligen Materialeigenschaften in der Zelle zu `testen` (zu pruefen) und die Auswirkungen von Grenzflaechen und Zwischenschichten (Interfaces und Interlayers) bzw. Uebergaengen zu beachten. Das beste, mit einem fertigungsrelevanten Prozess hergestellte Modul, erreicht einen stabilisierten Wirkungsgrad (extrapoliert) von 6.7% (Apertur: 5445 cm{sup 2}). (orig.)

  19. Development of a crankcase supercharged four-stroke spark-ignition engine; Entwicklung eines Viertakt Ottomotors mit Kurbelgehaeuseaufladung

    Energy Technology Data Exchange (ETDEWEB)

    Kirchberger, Roland; Eichlseder, Helmut [Inst. fuer Verbrennungskraftmaschinen und Thermodynamik, Technische Univ. Graz (Austria)

    2009-07-01

    Presently, two different technologies for small-volume engines are used with two-wheeled motor vehicles with applications in electric generator sets and at portable implements: 1- cylinder two-stroke engines and 1-cylinder four-stroke engines. The two-stroke technology suffers from high emissions of hydrocarbons due to the rinsing losses with the charge changing. Two-stroke engines have the advantage of a smaller weight and a high specific performance. This has clear advantages in the capacity-limited market segment. The four-stroke engines exhibit a controllable emission. In connection with subsequent catalytic treatment of exhaust gases this well established technology has the disadvantage of small specific performance. The authors of the contribution under consideration present a combination of both technologies which is to prevent the respective disadvantages. A four-stroke engine uses a two-stroke-similar crank case for precompressing the intake air, however uses a four-stroke cylinder head for accurately controllable charge change. The oil for the lubricating of the crank gear is mixed with load air. In order to avoid the high consumption of oil and the emissions, an oil separation system is implemented. After a historical review of the loading of the crank case a detailed description of the work principle as well as an insight in the research and development are shown. For the first protection of the concept a 0D-1D charge change calculation was accomplished. After the first construction phase and computation phase a prototype was presented and examined at the engine test stand and in a vehicle. The results from this led to a reconstruction of a crank case-loaded engine which was operated as serial near prototype at the engine test stand and in the vehicle.

  20. Air management system for automotive fuel cells; Luftversorgungssystem fuer Fahrzeugbrennstoffzellen

    Energy Technology Data Exchange (ETDEWEB)

    Kauder, K.; Temming, J. [Dortmund Univ. (Germany). Fachgebiet Fluidenergiemaschinen

    2001-07-01

    Fuel cells have attained a predominant position in the development of alternative automotive drives during the last few years. The Polymer Electrolyte Membrane Fuel Cell (PEMFC), preferred for automotive applications, requires compressed air for maximum efficiency. In most prototypes this is provided by twin-screw compressors. The article introduces the different types of fuel cells, and the system and requirements of mobile applications of fuel cells. The advantages and development potential of screw compressors are described. Furthermore concepts of a compressor-expander module based on screw machines are presented and discussed. (orig.) [German] Bei der Entwicklung alternativer Fahrzeugantriebe hat die Brennstoffzelle in den letzten Jahren eine vorherrschende Stellung eingenommen. Die Polymer-Elektrolyt-Membran Brennstoffzelle, PEMFC, die fuer automotive Anwendungen bevorzugt verwendet wird, benoetigt fuer einen optimalen Wirkungsgrad eine Druckluftversorgung. Als Compressor kommt derzeit insbesondere der Schraubenlader bzw. -compressor in verschiedenen Prototypenfahrzeugen zum Einsatz. Der Beitrag behandelt zunaechst die unterschiedlichen Brennstoffzellentypen, den Systemaufbau und die Anforderungen an die mobile Anwendung der Brennstoffzelle. Fuer diesen speziellen Anwendungsfall werden Vorteile und Entwicklungsmoeglichkeiten der Schraubenmaschine dargelegt. Davon ausgehend finden sich Konzepte zum Aufbau eines Compressor-Expander-Moduls (CEM) auf Basis der Schraubenmaschinen. (orig.)

  1. Development and application of cryogenic radiometry with hard X-rays; Entwicklung und Anwendung der Kryoradiometrie mit harter Roentgenstrahlung

    Energy Technology Data Exchange (ETDEWEB)

    Gerlach, Martin

    2008-06-06

    To establish cryogenic radiometry with hard X-ray radiation for photon energies of up to 60 keV, a novel type of cavity absorber had to be developed for the cryogenic radiometer SYRES I, which is deployed by the Physikalisch-Technische Bundesanstalt (PTB) as primary standard detector at the electron storage ring BESSY II. This new type of cavity absorber allows for the complete absorption of hard X-ray radiation in combination with an appropriate sensitivity and an adequate time constant for the measurement of synchrotron radiation at BESSY II. As the process of fabrication of different types of absorbers is very time-consuming, the interaction of hard X-ray radiation with different absorber materials and geometries was studied intensively by using the Monte Carlo simulation code Geant4. The accuracy of the simulations was verified comparing them to scattering experiments performed at a wavelength shifter beamline at BESSY II with a calibrated energy dispersive detector. It was shown that Geant4 describes the photo-effect, including fluorescence as well as Compton- and Rayleigh scattering, with high accuracy. The simulations and experiments resulted in a cavity absorber with a gold base 550 {mu}m in thickness and a cylindrical shell made of copper 90 {mu}m in thickness to reduce losses caused by fluorescence and scattered radiation. Monochromatized synchrotron radiation of high spectral purity was then used to calibrate semiconductor photodiodes, which can be used as compact and inexpensive secondary standard detectors, against a cryogenic radiometer, covering the entire photon energy range of three beamlines from 50 eV to 60 keV with relative uncertainties of less than 0.5 %. Furthermore the spatial homogeneity of the spectral responsivity, the transmittance and the linearity of the photodiodes was investigated. Through a direct comparison of the free-air ionization chamber PK100, a primary detector standard of PTB used in dosimetry, and the cryogenic radiometer

  2. Fundamental study for the development and optimization of ceramic recuperator burners; Grundlagenuntersuchung zur Entwicklung und Optimierung keramischer Rekuperatorbrenner

    Energy Technology Data Exchange (ETDEWEB)

    Brune; Boss, M.; Flamme, M. [Gaswaerme-Institut e.V., Essen (Germany); Lynen, A. [Schunk Ingenieurkeramik GmbH, Willich (Germany); Wuenning, J.A.; Wuenning, J.G. [WS Waermeprozesstechnik GmbH, Renningen (Germany); Dittmann, H.J.; Seltmann, M. [Kromschroeder Prozesswaerme GmbH, Wuppertal (Germany)

    1998-06-01

    A significant reduction of CO{sub 2} emissions from high-temperature processes can be accomplished by means of recovery of heat from the flue gases. For several years now, recuperator burners consisting of reaction-bonded silicon carbide have been available on the market for temperatures above 1100 C and for service with corrosive flue gases, where chromium-nickel steels cannot be used. Ceramic recuperative burners for higher outputs and efficiencies have been developed with support from the BMBF and the gas industry. It has proven possible to produce ceramic recuperators which on the one hand can be manufactured at a rational price level and, on the other, achieve a relative air pre-heat of up to {epsilon}=0.8. In addition to optimization of these heat exchange elements, new burner systems by means of which NO{sub x} emissions can be reduced have also been developed. (orig.) [Deutsch] Bei Hochtemperaturprozessen ist eine erhebliche Verringerung des CO{sub 2}-Ausstosses durch Waermerueckgewinnung aus den Abgasen moeglich. Fuer Temperaturen oberhalb 1100 C und bei korrosiven Abgasen, bei denen Chrom-Nickel-Staehle nicht eingesetzt werden koennen, sind seit einigen Jahren Rekuperatorbrenner aus reaktionsgebundenem Siliciumcarbid auf dem Markt. Mit Foerderung vom BMBF und von der Gaswirtschaft wurden die keramischen Rekuperatorbrenner fuer hoehere Leistungen und Wirkungsgrade weiterentwickelt. Dabei ist es gelungen, keramische Rekuperatoren zu fertigen, die zum einen kostenguenstig hergestellt werden koennen und zum anderen bei einer Prozesstemperatur von 1300 C eine relative Luftvorwaermung von bis zu {epsilon}=0,8 erreichen. Neben der Optimierung der Waermetauscher wurden neue Brennersysteme entwickelt, mit denen die NO{sub x}-Emission reduziert wurde. (orig.)

  3. Development of a test system for the determination of biodegradability in surface waters; Entwicklung eines Testsystems fuer die Pruefung des biologischen Abbaus in Oberflaechengewaessern

    Energy Technology Data Exchange (ETDEWEB)

    Kalsch, W.; Knacker, T.; Robertz, M.; Schallnass, H.J.

    1997-04-01

    The study presented here describes the development of a laboratory test system for the determination of aerobic biodegradability of substances at low concentrations in surface water. It was aimed to prepare a draft guideline for a biodegradation simulation test according to OECD format. The experimental approach was based on a literature study conducted within the frame of this project. Further useful information on the possible test design was derived from the German BBA guideline 5-1. Natural water and sediments were collected. Radiolabelled Lindane or 4-Nitrophenol was added. The test vessels (reactors) were aerated and incubated under controlled conditions for up to 92 days. The results showed biological stability of the sediment/water systems even without addition of nutrients and adherence to non-reducing conditions. Mineralisation of 4-Nitrophenol was influenced by the sediment type, the method of aeration and temperature. Factors affecting the mineralisation of Lindane were the method of application and again, the sediment type and temperature. Considerable amounts of the radioactivity were bound to the sediment and were to a large extent unextractable. The potential of a reactor to mineralise a test substance could not be correlated with the biological parameters measured. (orig.) [Deutsch] Die vorliegende Studie beschreibt die Entwicklung eines Labortestverfahrens zur Pruefung des aeroben Abbaus niedrig konzentrierter Stoffe in Oberflaechengewaessern. Dabei war es ein Ziel, das Verfahren so weit abzusichern, dass ein Entwurf fuer eine Pruefrichtlinie als Simulationstest im Format der OECD-Richtlinien abgefasst werden konnte. Grundlage fuer die Konzeption war eine zuvoerderst durchgefuehrte Literaturstudie. Hinweise auf ein moegliches Testdesign ergaben sich auch aus der BBA-Richtlinie 5-1. Wasser und Sediment wurden der Natur entnommen und nach Zugabe der radioaktiven Pruefsubstanz Lindan oder 4-Nitrophenol in einem beluefteten Gefaess unter

  4. Development of a CdTe/CdS solar wafer. Final report; Entwicklung einer CdTe/CdS Duennschicht-Solarzelle. Schlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Koentges, M.; Reineck-Koch, R.

    2002-07-01

    The focus was on the development and optimisation of the close-spaced sublimation process in an inline coating plant for production of stable high-efficiency CdS/CdTe solar wafers. An inline plant was to be constructed by ANTEC GmbH and ISFH. Film layers were to be optimised, and investigations were to show whether processing of single films is possible without breaking the vacuum, e.g. for etching. The results were to be used directly by ANTEC GmbH. An efficiency of 14 percent and an idle voltage of about 850 V were to be achieved with a film thickness of 2 {mu}m. To achieve these goals, the following project stages were envisaged: 1. Replacement of the expensive window material ITO by a less costly material. 2. Higher stability of the back contact by using appropriate intermediate layers. 3. Alternative activation processes other than the conventional CdCl{sub 2} activation. 4. Investigation of the effects of the activation step on the electric properties of the sample. [German] Die uebergreifende Aufgabenstellung des Projektes war die Entwicklung und Optimierung des Close-spaced-Sublimation verfahrens in einer Inline-Beschichtungsanlage fuer die Herstellung stabiler und hocheffizienter CdS/CdTe Duennschichtsolarzellen. Mit dem Wissen der ANTEC GmbH sollte zusammen mit dem ISFH eine Inline-Anlage konzipiert und gebaut werden. Die fuer die Solarzelle notwendigen Einzelschichten sollten in dem Inline-Prozess optimiert werden. Es sollte ermittelt werden, ob eine Prozessierung der Einzelschichten ohne Brechen des Vakuums, z.B. fuer einen Aetzschritt, moeglich ist. Die erzielten Ergebnisse sollen direkt der ANTEC GmbH zufliessen. In dem Projekt wurde als Endziel ein Wirkungsgrad der CdTe/CdS-Duennschichtsolarzelle von 14% und eine Erhoehung der Leerlaufspannung auf Werte um 850 mV angestrebt. Gleichzeitig sollte die CdTe-Schichtdicke auf 2 {mu}m vermindert werden. Um dieses Gesamtziel zu erreichen, sollen folgende Teilaufgaben bearbeitet werden: 1) Das teuere

  5. Air Pollution

    Science.gov (United States)

    ... to view this content or go to source URL . What NIEHS is Doing on Air Pollution Who ... Junction Last Reviewed: February 06, 2017 This page URL: NIEHS website: https://www.niehs.nih.gov/ Email ...

  6. Development of low emissivity layer systems for large area glass coating. Subproject: up-scaling of the processes to the large area cathode and development of applicable test procedures. Final report; Entwicklung von Waermedaemmungs-Schichtsystemen fuer die grossflaechige Glasbeschichtung. Teilprojekt: Skalierung der Prozesse auf die Grosskathode und Entwicklung anwendungsnaher Testverfahren. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Nahr, J.; Dietrich, A.; Hong Dietrich Xian

    1998-12-31

    Within the project work was done in the area of development of coatings, the up-scaling of processes, the development of test procedures and the area of process optimization/process monitoring. The test procedure for coated isolating glazings produced important results to the long-term stability of different types of low-e coatings. The new development layer systems on the base of double-silver have very good optical and heat-conserving properties. The TwinMag-cathode developed by Leybold was successfully scaled-up to the large area cathode and integrated into the production process of a coater for architectural glazings. A tool for the puls-sputtering of silver was successfully tested at a large area cathode. Negativ effects to the properties of the coating were not found. A program for automatical and continuous aquisition of process- and product data was developed with the aim of total quality control. (orig.) [Deutsch] Im Rahmen des Verbundprojektes wurden Arbeiten zur Schichtentwicklung, zur Hochskalierung verschiedener Prozesse, zur Entwicklung von Testverfahren und zur Prozessoptimierung/Prozessueberwachung durchgefuehrt. Das Labortestverfahren fuer beschichtete Isolierglaeser hat wichtige Erkenntnisse zur Langzeitstabilitaet verschiedener Low-E-Schichten gebracht. Die beiden neuentwickelten Schichtsysteme auf Doppelsilberbasis weisen sehr gute optische und waermetechnische Eigenschaften auf. Das vom Projektpartner Leybold entwickelte Konzept der TwinMag-Kathode gepaart mit der Mittelfrequenztechnik wurde erfolgreich auf einer Grosskathode fuer eine Architekturglasbeschichtungsanlage hochskaliert und in den Produktionsprozess integriert. Ein Geraet zum Pulssputtern von Silber erwies in Tests an der Grosskathode seine Funktionstuechtigkeit. Negative Auswirkungen auf die Schichteigenschaften konnten nicht gefunden werden. Ein Programm zur automatischen und kontinuierlichen Erfassung der Prozess- und Produktdaten wurde entwickelt mit dem Ziel einer umfassenden

  7. Leitbilder und Handlungsstrategien für die Raumentwicklung in Deutschland. Entwicklungs-, Umsetzungs- und Fortschreibungsprozess der Bund-Länder-Strategie für Städte und Regionen

    Science.gov (United States)

    Issaoui, Mariam; Sinz, Manfred

    2010-09-01

    Die Ministerkonferenz für Raumordnung stellte im Mai 2010 fest, dass sich die „Leitbilder und Handlungsstrategien für die Raumentwicklung in Deutschland“ (2006) bewährt haben und bei der Gestaltung der räumlichen Entwicklung umgesetzt werden. Um die Leitbilder den sich verändernden wirtschaftlichen, sozialen und naturräumlichen Rahmenbedingungen anzupassen und die Erkenntnisse aus dem bisherigen Diskussions- und Umsetzungsprozess in Politik und Praxis einzubeziehen, sind sie zu ergänzen und weiterzuentwickeln. Im Mittelpunkt der Fortschreibung werden die Themen „Partnerschaften und Strategien für Stadtregionen und ländliche Räume“, „Mobilität und Logistik“ sowie „Klimaschutz und Energieversorgung“ stehen.

  8. Development of a vegetable oil pressure cooker to near-maturity. Final report. Project period 1 Jan 2001 through 31 Dec 2001; Entwicklung eines Pflanzenoel-Druckkochers bis zur Vorserienreife. Abschlussbericht. Projektzeitraum 01.01.2001 - 31.12.2001

    Energy Technology Data Exchange (ETDEWEB)

    Muehlbauer, W.; Stumpf, E.

    2001-02-01

    A single-flame prototype household cooker for tropical and sub-tropical regions was developed during a project funded by Deutsche Bundesstiftung Umwelt (AZ 13933). The results of the project are presented in this report. [German] In dem Projekt ''Pflanzenoele als Brennstoff: Entwicklung von Haushaltskochern fuer tropische und subtropische Laender'', das von der Deutschen Bundesstiftung Umwelt unter dem AZ 13933 vom 01.02.1998 bis zum 31.04.2000 gefoerdert worden ist, wurde ein einflammiger Prototyp eines Druckkochers fuer Haushalte in den Tropen und Subtropen entwickelt, der im folgenden mit ''Prototyp der ersten Generation'' bezeichnet wird. Die Forschungsergebnisse dieses Projektes koennen dem entsprechenden Abschlussbericht entnommen werden. (orig.)

  9. Development of a biotechnical short-term test of microbial activity in contaminated mining sites. Annual report 1999 and final report; Entwicklung eines biotechnischen Kurzzeit-Verfahrens zur Bestimmung der mikrobiellen Aktivitaet in Bergbaualtlasten. Jahresbericht 1999 und Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Sand, W.; Rohwerder, T.; Wentzien, S.; Gock, E.; Reiss, M.

    2000-04-01

    Development of a method for monitoring 'natural' microbial leaching of metal sulfides, or microbial leaching processes modified by sanitation measures, in abandoned mines which will result in contaminations of soil and water with heavy metal ions and sulphuric acid. The bacterial reactions will be quantified by a calorimetric short-term activity test standardized for routine preparation, monitoring and assessment of land reclamation measures. [German] Entwicklung eines Verfahrens zur Ueberwachung der in Bergbaualtlasten ablaufenden 'natuerlichen' oder durch Sanierungsmassnahmen modifizierten mikrobiellen Laugung von Metallsulfiden, die zu einer Kontamination von Boeden und Gewaessern mit Schwermetallionen und Schwefelsaeure fuehrt. Die bakteriellen Umsetzungen sollen mithilfe eines kalorimetrischen Kurzzeit-Aktivitaetstests quantifiziert werden, der soweit standardisiert wird, dass er routinemaessig zur Vorbereitung, Kontrolle und Bewertung von Sanierungsmassnahmen eingesetzt werden kann. (orig.)

  10. Short version of the 1996 environmental expertise on the implementation of a sustainable, environmentally acceptable development. Conclusions and recommendations for action; Kurzfassung des Umweltgutachtens 1996 zur Umsetzung einer dauerhaft-umweltgerechten Entwicklung. Schlussfolgerungen und Handlungsempfehlungen

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-02-01

    The aim of the present expertise is to set new orientation marks for the tedious, conflict-laden procedure of bringing the ideal of a sustainable, environmentally acceptable development to realisation. By submitting this expertise the Environmental Council has acted in accordance with its assignment to report periodically on certain well-defined issues; specifically, to analyse generic questions of environmental protection, describe the environmental situation in Germany with regard to selected sectors of environmental protection, and give a critical valuation of current environmental policy. (orig./SR) [Deutsch] Das vorliegende Gutachten hat das Ziel, weitere Markierungen fuer den langwierigen und konflikttraechtigen Weg zur Umsetzung des Leitbildes einer dauerhaft-umweltgerechten Entwicklung zu setzen. Der Umweltrat kommt auch in diesem Gutachten seinem Auftrag nach, im Rahmen der periodischen Begutachtung uebergreifende Fragen des Umweltschutzes zu analysieren und fuer ausgewaehlte Umweltschutzsektoren die Umweltsituation in Deutschland zu beschreiben und die Umweltpolitik kritisch zu bewerten. (orig./SR)

  11. Air surveillance

    Energy Technology Data Exchange (ETDEWEB)

    Patton, G.W.

    1995-06-01

    This section of the 1994 Hanford Site Environmental Report summarizes the air surveillance and monitoring programs currently in operation at that Hanford Site. Atmospheric releases of pollutants from Hanford to the surrounding region are a potential source of human exposure. For that reason, both radioactive and nonradioactive materials in air are monitored at a number of locations. The influence of Hanford emissions on local radionuclide concentrations was evaluated by comparing concentrations measured at distant locations within the region to concentrations measured at the Site perimeter. This section discusses sample collection, analytical methods, and the results of the Hanford air surveillance program. A complete listing of all analytical results summarized in this section is reported separately by Bisping (1995).

  12. Development of a guidance manual for the identification and assessment of interactions as part of Environmental Impact Assessment; Entwicklung einer Arbeitsanleitung zur Beruecksichtigung der Wechselwirkungen in der Umweltvertraeglichkeitspruefung

    Energy Technology Data Exchange (ETDEWEB)

    Rassmus, J.; Bruening, H.; Kleinschmidt, V.; Reck, H.; Dierssen, K.; Bonk, A. [Kiel Univ. (Germany). Oekologie-Zentrum

    2001-03-01

    , a methodology for the cross-media assessment of effects was developed. Here, the direct and indirect (caused e.g. via effect chains/webs) effects already described in the chapters specific to the various protected assets are examined to select and jointly assess those among them that are of relevance to general objectives or sub-objectives (protection of human health, improvement of environmental conditions to improve the quality of life for human beings, preservation of habitat potentials for plants and animals). (orig.) [German] Ziel des Vorhabens war die Entwicklung einer praxisorientierten Arbeitsanleitung fuer die Beruecksichtigung der Wechselwirkungen in der UVP. Die Arbeitsanleitung soll Vorhabenstraeger und deren Gutachter bei der Ermittlung und Beschreibung der Auswirkungen eines Vorhabens auf Wechselwirkungen und der entsprechenden sachgerechten Darstellung innerhalb der Antragsunterlagen und Behoerden bei der folgenden Bewertung unterstuetzen. Im Rahmen des Vorhabens wurden die entsprechenden rechtlichen und naturwissenschaftlichen Grundlagen (hier insbesondere der Kenntnistand der Oekosystemforschung), die im In- und Ausland bekannten Leitfaeden/Arbeitsanleitungen u.ae. und die in der Praxis angewandten Ansaetze ausgewertet und weiterentwickelt. Dies erfolgte u.a. durch die Auswertung der entsprechenden Literatur und durch Expertenworkshops. Nach der im Vorhaben entwickelten Definition sind unter Wechselwirkungen im Sinne der EU-UVP-Richtlinie und Paragraph 2 UVPG, die in der Umwelt ablaufenden Prozesse zu verstehen. Bei der in der UVP-Praxis gegenwaertig angewandten Betrachtung von Wirkungsketten und -netzen werden Prozesse bzw. Wechselwirkungen bereits weitgehend ermittelt und beschrieben, da die Glieder der Ketten und Netze ueber Prozesse miteinander verbunden sind. Die im Vorhaben entwickelte Arbeitsanleitung geht hier einen Schritt weiter, indem sie ein Verfahren fuer die systematische Bearbeitung von Wirkungsketten- und -netzen mit definierten

  13. Development of a fluidized-bed method for on-line evaluation of radiotracers in vitro; Entwicklung einer Fliessbettechnik zur Bewertung von Radiopharmaka an Zellkulturen

    Energy Technology Data Exchange (ETDEWEB)

    Noll, T.

    1999-05-01

    This study presents the development of a continuously operating fluidized-bed bioreactor for on-line evaluation of radiotracers in vitro, which combines tissue-like three-dimensional cell cultivation in open porous microcarriers with a technique for on-line radioactivity detection. The long time stability of steady-state permits a large number of experiments using the same culture. All relevant parameters (O{sub 2}, pH, T, etc.) can be adjusted according to the experimental requirements. The flux of the circulating medium can be adapted to the blood flow of the corresponding organism, while the input function of the radiotracer is freely adjustable for simulation of in vivo conditions. Sampling and examination of the immobilized cells care possible at any time. Using this system, the kinetics of 2-[{sup 18}F]fluoro-2-deoxyglucose (FDG) in human glioma cells (86HG39) were studied and it was shown that the dependence of the lumped constant (LC) for FDG on the medium glucose concentration is similar to that obtained in the rat brain. For normoglycemic concentrations the LC was determined to be in the range of 0.7, while in hypoglycemia it increased progressively up to a value of 1.22 at a glucose concentration of 3 mM. The rate constants in the three compartment model were found to be similar to those obtained in vivo using PET; indicating the validity of the system for tracer evaluation. Furthermore the kinetics of both diastereomeric forms of 4-[{sup 18}F]fluoro-proline was investigated and found that both diastereomeres were not metabolized and reached an identical intracellular steady state concentration. The trans-form was transported three times faster than the cis-diastereomere, indicated by the rate constants. (orig.) [German] Diese Arbeit beschreibt die Entwicklung eines kontinuierlich betriebenen Wirbelschichtreaktors zur on-line Bewertung von Radiotracern an Zellkulturen. Der Bioreaktor kombiniert eine gewebeaehnliche, dreidimensionale Zellkultivierung in

  14. Royal Danish Air Force. Air Operations Doctrine

    DEFF Research Database (Denmark)

    Nørby, Søren

    This brief examines the development of the first Danish Air Force Air Operations Doctrine, which was officially commissioned in October 1997 and remained in effect until 2010. The development of a Danish air power doctrine was heavily influenced by the work of Colonel John Warden (USAF), both...... through his book ”The Air Campaign” and his subsequent planning of the air campaign against Iraq in 1990-1991. Warden’s ideas came to Denmark and the Danish Air Force by way of Danish Air Force students attending the United States Air Force Air University in Alabama, USA. Back in Denmark, graduates from...... the Air University inspired a small number of passionate airmen, who then wrote the Danish Air Operations Doctrine. The process was supported by the Air Force Tactical Command, which found that the work dovetailed perfectly with the transformation process that the Danish Air Force was in the midst...

  15. Genderperspektive und Frauenförderung in der deutschen Entwicklungszusammenarbeit : der „Entwicklungspolitische Gender-Aktionsplan 2009 - 2012“ des Bundesministeriums für wirtschaftliche Zusammenarbeit und Entwicklung (BMZ)/// Arbeitspapiere / Institut für Ethnologie und Afrikastudien ; 110

    OpenAIRE

    Heigl, Ursula

    2009-01-01

    Der vorliegende Artikel befasst sich mit aktuellen Strategien bezüglich Gender und Frauenförderung in der deutschen Entwicklungspolitik. Dabei steht eine Analyse des „Entwicklungspolitischen Gender-Aktionsplans 2009-2012“ des Bundesministeriums für Wirtschaftliche Zusammenarbeit und Entwicklung (BMZ) im Fokus. Ausgangspunkt hierfür ist die internationale Debatte über Gender und Frauenförderung in der Entwicklungspolitik, welche eine Reihe unterschiedlicher, zum Teil konträrer Argumentationsst...

  16. GSPEL - Air Filtration Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — Evaluation capabilities for air filtration devices The Air Filtration Lab provides testing of air filtration devices to demonstrate and validate new or legacy system...

  17. Air-to-Air Missile Vector Scoring

    Science.gov (United States)

    2012-03-22

    64 4.6. Unscented Kalman Filter Performance in Air-to-Air Missile Scor - ing Application with Continuous Velocity Dynamics Model (Tar- get...Filter Performance in Air-to-Air Missile Scor - ing Application with Continuous Velocity Dynamics Model (Tar- get Aircraft Executing a Vertical Climb...Kalman Filter Performance in Air-to-Air Missile Scor - ing Application with Continuous Velocity Dynamics Model (Tar- get Aircraft Non-maneuvering

  18. R9 Air Districts

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Region 9 Air Districts layer is a compilation of polygons representing the California Air Pollution Control and Air Quality Management Districts, Arizona Air...

  19. AirData

    Data.gov (United States)

    U.S. Environmental Protection Agency — The AirData site provides access to yearly summaries of United States air pollution data, taken from EPA's air pollution databases. AirData has information about...

  20. California Air Basins

    Data.gov (United States)

    California Department of Resources — Air ResourcesCalifornia Air Resources BoardThe following datasets are from the California Air Resources Board: * arb_california_airbasins - California Air BasinsThe...

  1. Air Warfare

    Science.gov (United States)

    2002-03-01

    undoubtedly begat the shield; poisonous gases were countered by the mask. Surely men on the surface of the earth will not have to submit to violent air attack...properties, production methods and cost of helium are given in “Balloon and Airship Gases ,” a volume of the Ronald Aeronautic Library. 5 More complete...becomes and more inse - cure. We shall see later that even some of the men who were advancing in the path prescribed by the principle of mass

  2. Development of process technology for large-area thin-film solar modules based on compound semiconductors. Final report; Entwicklung der technologischen Grundlagen fuer grosse Photovoltaikmodule auf Basis von Duennschicht-Verbindungshalbleitern. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Maurus, H.; Lechner, P.; Geyer, R.; Ruebel, H.; Schade, H.; Psyk, W.; Frammelsberger, W.; Berthold, W.; Eichner, C.; Heckel, E.; Huber, R.; Labudde-Eibl, H.; Raith, S.; Schenk, B.; Ullrich, H.

    1998-06-01

    dabei die Grundlagenentwicklungen des Instituts fuer physikalische Elektronik der Universitaet Stuttgart (IPE) und des ZSW einerseits und die Erfahrungen der PST auf den Gebieten der grossflaechigen Modulfertigung andererseits. Fuer jede Einzelschicht eines Moduls (Rueckkontakt Mo, Absorber CIS, Anpassungsschicht CdS o.ae. und Fensterschicht ZnO) wurden Anlagen und Verfahren entwickelt, die eine hohe Qualitaet der Eigenschaften auf Flaechen bis 30x30 cm{sup 2} gewaehrleisten. Die monolithische Integration der Solarmodule durch geeignete Strukturierungsverfahren wie Laser-Scribing, mechanisches Ritzen und Lift-Off-Verfahren wurden untersucht und optimiert. Die Projektschwerpunkte bei PST waren die grossflaechige Abscheidung des Mo-Rueckkontaks und seine nachfolgende Strukturierung, Beitraege zur Entwicklung der ZnO-Fensterschicht und die Entwicklung der Modultechnik. Die hier zugeordneten Arbeitspakete waren die Randentschichtung, die Kontaktierung, die Laminierung, die Kabeldurchfuehrung, die Modulcharakterisierung und der Klimatest. Das Projektziel, naemlich die Entwicklung der Verfahrens- und Anlagentechnik (Basistechnologie) zur Herstellung grossflaechiger Module (30x30 cm{sup 2}) mit einem Wirkungsgrad von 10-12% wurde erreicht (bestes Modul: {eta}=11.7 Apertur). (orig.)

  3. Development of a guidance manual for the identification and assessment of interactions as part of Environmental Impact Assessment; Entwicklung einer Arbeitsanleitung zur Beruecksichtigung der Wechselwirkungen in der Umweltvertraeglichkeitspruefung

    Energy Technology Data Exchange (ETDEWEB)

    Rassmus, J.; Bruening, H.; Kleinschmidt, V.; Reck, H.; Dierssen, K.; Bonk, A. [Kiel Univ. (Germany). Oekologie-Zentrum

    2001-03-01

    , a methodology for the cross-media assessment of effects was developed. Here, the direct and indirect (caused e.g. via effect chains/webs) effects already described in the chapters specific to the various protected assets are examined to select and jointly assess those among them that are of relevance to general objectives or sub-objectives (protection of human health, improvement of environmental conditions to improve the quality of life for human beings, preservation of habitat potentials for plants and animals). (orig.) [German] Ziel des Vorhabens war die Entwicklung einer praxisorientierten Arbeitsanleitung fuer die Beruecksichtigung der Wechselwirkungen in der UVP. Die Arbeitsanleitung soll Vorhabenstraeger und deren Gutachter bei der Ermittlung und Beschreibung der Auswirkungen eines Vorhabens auf Wechselwirkungen und der entsprechenden sachgerechten Darstellung innerhalb der Antragsunterlagen und Behoerden bei der folgenden Bewertung unterstuetzen. Im Rahmen des Vorhabens wurden die entsprechenden rechtlichen und naturwissenschaftlichen Grundlagen (hier insbesondere der Kenntnistand der Oekosystemforschung), die im In- und Ausland bekannten Leitfaeden/Arbeitsanleitungen u.ae. und die in der Praxis angewandten Ansaetze ausgewertet und weiterentwickelt. Dies erfolgte u.a. durch die Auswertung der entsprechenden Literatur und durch Expertenworkshops. Nach der im Vorhaben entwickelten Definition sind unter Wechselwirkungen im Sinne der EU-UVP-Richtlinie und Paragraph 2 UVPG, die in der Umwelt ablaufenden Prozesse zu verstehen. Bei der in der UVP-Praxis gegenwaertig angewandten Betrachtung von Wirkungsketten und -netzen werden Prozesse bzw. Wechselwirkungen bereits weitgehend ermittelt und beschrieben, da die Glieder der Ketten und Netze ueber Prozesse miteinander verbunden sind. Die im Vorhaben entwickelte Arbeitsanleitung geht hier einen Schritt weiter, indem sie ein Verfahren fuer die systematische Bearbeitung von Wirkungsketten- und -netzen mit definierten

  4. Air filtration and indoor air quality

    DEFF Research Database (Denmark)

    Bekö, Gabriel

    2006-01-01

    decent ventilation and air cleaning/air filtration, high indoor air quality cannot be accomplished. The need for effective air filtration has increased with increasing evidence on the hazardous effects of fine particles. Moreover, the air contains gaseous pollutants, removal of which requires various air....... These contradictions should motivate manufacturers and researchers to develop new efficient filtration techniques and/or improve the existing ones. Development of low polluting filtration techniques, which are at the same time easy and inexpensive to maintain is the way forward in the future....

  5. Energy report for Bavaria, 1998/99. Data on the development of the Bavarian energy industry, with an energy balance; Energiebericht Bayern 1998/99. Daten zur Entwicklung der bayerischen Energiewirtschaft mit Energiebilanz

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-07-01

    The energy report presents an annotated statistical review of energy supply in Bavaria and addresses the energy policy and resulting activities of the Bavarian Land government. The energy balance and tabulated data for the various branches of the energy industry predominantly cover the year 1997, but whenever available, data for the years 1998 and 1999 have been included. As in previous energy reports, an annex to the report contains statements of the Bavarian Land government in reply to written questions of members of the Land Parliament, and energy policy decisions of the Land Parliament taken within the reporting period. (orig./CB) [German] Der vorliegende Bericht zeigt die Entwicklung der Energieversorung in Bayern und gibt einen Ueberblick ueber die energiepolitischen Aktivitaeten der Staatsregierung. Die Energiebilanz und die Datentabellen zu den einzelnen Energiezweigen beziehen sich im allgemeinen auf das Jahr 1997. Soweit bei einigen Energietraegern bereits Zahlen fuer 1998 und 1999 vorliegen, wurden sie in den Bericht mit aufgenommen. Im Anhang des Energieberichts sind wieder Stellungnahmen der Bayerischen Staatsregierung zu Schriftlichen Anfragen von Abgeordneten sowie Beschluessen des Bayerischen Landtags zur Energiepolitik aus dem Berichtszeitraum wiedergegeben. (orig.)

  6. Biological and chemical development of mining lakes. Status report 1998/1999. Data acquisition, methods, trends; Biologische und chemische Entwicklung von Bergbaurestseen. Statusbericht 1998/1999. Bestandsaufnahme, Methoden und Entwicklungen

    Energy Technology Data Exchange (ETDEWEB)

    Friese, K.; Tuempling, W. von (eds.)

    2000-07-01

    Acidification of mining lakes in central Germany and the Lausitz was investigated for three aspects: 1.) biological dynamics and material effects on plancton abundance and variety; 2.) Chemical and microbiological interactions between sediments influenced by mining (authochthone, allochthone) and water phase 3. 3.) Limnological and hydrochemical development of water systems in abandoned mining areas with a view to environmental quality and/or utilisation. The following objects were investigated. a) Goitsche open-cast mine (Bitterfeld district); b) Lake 111 (Koyne/Pllessa district), - Lakes 107, 117 (Koyne/Plessa district), Lake b (Schlabendorf-Nord district). [German] Kernproblem in den Braunkohlengebieten der neuen Bundeslaender ist die Versauerung von Bergbauseen. Die Bearbeitung des Verbundprojektes konzentriert sich in den Bergbaufolgelandschaften der Regionen Mitteldeutschland und Lausitz auf bergbaulich gestoerte und in Veraenderung befindliche Oberflaechenwasser-Systeme. Arbeitziele sind 1.) die Vertiefung der Kenntnisse zur biologischen Dynamik und zum stofflichen Einfluss auf die Diversitaet und Abundanz von Plankton in sauren Bergbauseen 2) Untersuchungen zu spezifischen Wechselwirkungen (chemisch, mikrobiologisch) zwischen bergbaulich beeinflussten Sedimenten (autochthon, allochthon) und der Wasserphase 3. Betrachtungen der limnologischen und hydrochemischen Entwicklung der Wassersysteme in Bergbaufolgelandschaften hinsichtlich Umweltqualitaetszielen und/oder Nutzungszielen. Im Rahmen des Verbundprojektes werden von den Sektionen Gewaesserforschung, Hydrogeologie, Analytik, Bodenforschung und Umweltmikrobiologie in Mitteldeutschland und der Lausitz folgende Objekte bearbeitet: a) Tagebaukomplex Goitsche (Bitterfelder Revier) und b) Restloch 111 (Revier Koyne/Plessa), - Restloch 107, 117 (Revier Koyne/Plessa), - Restloch B (Revier Schlabendorf-Nord). (orig.)

  7. Development and prototypical application of analysis methods for complex anion mixtures in waters and heavy metal organyls in sediments; Entwicklung und prototypische Anwendung von Analysenverfahren fuer komplexe Anionengemische in Waessern und Schwermetallorganylen in Sedimenten. Schlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Anders, B.; Knoechel, A.; Potgeter, H.; Staub, S.; Stocker, M.

    2002-07-01

    When it comes to assessing the hazards emanating from heavy pollutants in waters mere elemental analysis provides too little information. Due to the great differences in toxicity and mobility it is important to know more about the exact species in question. This is particularly true of heavy metals that form stable organyls, specifically As, Pb, Sn and Hg, but also of alkylated arsenic acids, which need to be measured in complex anion mixtures. The purpose of the present project was to develop robust, powerful analysis methods and thus overcome the existing deficit in reliable analysis methods for these substances. An important approach in this connection is the use of coupled chromatography and detection systems for separation and analysis. [German] Hinsichtlich der von einer Schwermetallbelastung in Gewaessern ausgehenden Gefahren liefert die reine Elementanalytik nur unzureichende Aussagen. Aufgrund der grossen Unterschiede in Toxiditaet und Mobilitaet ist die Kenntnis der jeweils vorliegenden Spezies bedeutungsvoll. Dies gilt in besonderem Masse fuer die stabile Organyle bildenden Schwermetalle As, Pb, Sn und Hg sowie die alkylierten Arsensaeuren, die es innerhalb komplexer Anionengemische zu bestimmen gilt. Hinsichtlich ihrer sicheren Bestimmung bestehen methodische Defizite, die das vorliegende Projekt durch die Entwicklung robuster, nachweisstarker Analysenverfahren zu beseitigen versucht. Grosse Bedeutung kommt dabei gekoppelten Systemen aus Chromatographie und Detektion als Trenn- und Bestimmungsmethode zu. (orig.)

  8. Development of a regional concept for energy management for the region of Karlsruhe. Final report; Entwicklung eines regionalen Energiemanagement-Konzeptes und Anwendung auf die TechnologieRegion Karlsruhe. Endbericht

    Energy Technology Data Exchange (ETDEWEB)

    Rentz, O.; Fichtner, W.; Frank, M. [Karlsruhe Univ. (T.H.) (Germany). Inst. fuer Industriebetriebslehre und Industrielle Produktion; Wolf, M.A.; Rejman, M.; Eyerer, P. [Fraunhofer-Institut fuer Chemische Technologie (ICT) (Germany); Reimert, R.; Schulz, A.; Buren, V. v. [Karlsruhe Univ. (T.H.) (Germany). Engler-Bunte-Institut Bereich 1 - Gas, Erdoel und Kohle; Schaefers, B.; Bernart, Y. [Karlsruhe Univ. (T.H.) (DE). Institut fuer Soziologie (IfSoz) (Germany)

    2002-09-01

    Major objectives of this project are: to prepare a cross-disciplinary analysis of all characteristic aspects of the energy supply and demand patterns of a group of selected energy-intensive companies in the Karlsruhe and Rhine harbour area (5 industrial power consumers, 1 utility), to identify practical approaches for optimization and integration of energy and material flows, (networking), and to develop optimised investment and energy supply options within the framework of given conditions. The basis of the optimal solution and energy network presented and explained in detail is a new combined-cycle power plant running as a gas-fired CHP plant, substituting about 50% of the systems formerly used. (orig./CB) [German] Fragestellungen der Effizienzsteigerung und der Verwertung von Abfaellen und Abwaerme gewinnen an Relevanz vor dem Hintergrund der begrenzten Aufnahmekapazitaet der Umweltmedien fuer Schadstoffe. Im Rahmen des Projektes wurde am Beispiel der Region Karlsruhe (5 Industrieunternehmen und 1 EVU) die Entwicklung betriebsuebergreifender Energieversorgungssysteme (Netzwerke) interdisziplinaer analysiert und beschrieben. Zielsetzungen des Projekts waren unter anderem: Bestimmung von zukunftsfaehigen Optionen, intelligente Vernetzung von Energiestroemen, wirtschaftliche Optimierung betriebsuebergreifender Energiemanagement-Loesungen. Die optimale vorgestellte Loesung ist charakterisiert durch den Neubau einer zentralen, gasgefeuerten GuD-Anlage, die etwa die Haelfte der bisherigen Anlagen ersetzt und zusammen mit den weiterhin genutzten Anlagen die Energieversorgung der Unternehmen sicherstellt. (orig./CB)

  9. Dual vehicle - Development, construction and testing of a dual vehicle for passenger transport on roads and railways. Final report; Zweiwegefahrzeug - Entwicklung, Bau und Erprobung eines Zweiwegefahrzeuges zur Personenbefoerderung Strasse/Schiene. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    This feasibility study investigated a prototype dual vehicle for railways and roads. Technical problems, acceptance specifications, legal and economic aspects were gone into. [German] Zielstellung fuer das Vorhaben war die Untersuchung ausgewaehlter technischer Fragestellungen hinsichtlich der Machbarkeit der Entwicklung und Erprobung eines Prototypes fuer ein Zweiwegefahrzeug fuer den Personenverkehr, das fuer den Einsatz auf der Schiene und der Strasse vorgesehen und dafuer entsprechend technisch ausgestattet ist. Damit erbringt das Vorhaben technisch-konstruktive Loesungsansaetze fuer ein vollstaendig neues Fahrzeuggrundkonzept und traegt hinsichtlich eines solchen zukuenftigen Fahrzeugtyps - zur Klaerung technischer Fragen (statische Zusammenbauuntersuchungen, geometrische und massliche Bedingungen sowie Konzipierung, Leistungsanforderungen der Komponenten, Konzept fuer Ein- und Ausspuren sowie fuer Ein- und Ausstieg), - zur Pruefung der technischen Zulassungsfaehigkeit des Fahrzeuges, - zur Klaerung von Rechtsfragen fuer die Sicherung des Betriebes des Fahrzeuges - sowie zum Nachweis des wirtschaftlicheren Betriebes des Fahrzeuges bei. Das Vorhaben unterbreitet unter Beruecksichtigung sicherheitstechnischer, gesetzlicher und wirtschaftlicher Rahmenbedingungen Loesungsvorschlaege fuer die konstruktive Konzipierung des Fahrgestells und ein technisches Konzept fuer das Ein- und Ausspuren fuer einen neuen Fahrzeugtyp, der sowohl fuer die Strassenbenutzung als auch fuer den Schienenverkehr zugelassen ist. (orig.)

  10. Air pollution

    Energy Technology Data Exchange (ETDEWEB)

    1974-12-01

    Air pollution conditions in Iwakuni city were monitored at 9 monitoring stations, and 21 locations where sulfur oxides were measured by the lead peroxide candle method, and 13 locations where particulates concentrations were determined by the deposit cage method. The average SO/sub x/ concentrations in 1973 measured by the lead peroxide candle method ranged from 0.17 mg sulfur trioxide/day/100 sq cm at the Miso Office to 0.58 mg SO/sub 3//day/100 sq cm at Mitsui Sekiyu Shataku. The average SO/sub x/ concentrations measured by the conductivity method ranged from 0.021 ppM at Kazuki Kominkan to 0.037 ppM at the Higashi Fire Department. Only 58% of a total of 264 measurement days gave hourly average concentrations below the environmental standard of 0.04 ppM at the Higashi Fire Deparment. The average airborne particulate concentrations ranged from 0.050 mg/cu m at Totsu Kominkan to 0.056 mg/cu at the Higashi Fire Department. The average nitrogen oxides concentrations measured by the Saltzman method ranged from 0.007 ppM to 0.061 ppM. The average oxidant concentrations at the Iwakuni Municipal Office and Kazuki Kominkan were 0.028 ppM and 0.037 ppM, respectively.

  11. Air Sensor Toolbox

    Science.gov (United States)

    Air Sensor Toolbox provides information to citizen scientists, researchers and developers interested in learning more about new lower-cost compact air sensor technologies and tools for measuring air quality.

  12. HEPA air filter (image)

    Science.gov (United States)

    ... pet dander and other irritating allergens from the air. Along with other methods to reduce allergens, such ... controlling the amount of allergens circulating in the air. HEPA filters can be found in most air ...

  13. GSPEL - Air Filtration Laboratory

    Data.gov (United States)

    Federal Laboratory Consortium — Evaluation capabilities for air filtration devicesThe Air Filtration Lab provides testing of air filtration devices to demonstrate and validate new or legacy system...

  14. Lead (Pb) Air Pollution

    Science.gov (United States)

    ... States Environmental Protection Agency Search Search Lead (Pb) Air Pollution Share Facebook Twitter Google+ Pinterest Contact Us As ... and protect aquatic and terrestrial ecosystems. Lead (Pb) Air Pollution Lead Air Pollution Basics How does lead get ...

  15. AirPEx: Air Pollution Exposure Model

    OpenAIRE

    Freijer JI; Bloemen HJTh; de Loos S; Marra M; Rombout PJA; Steentjes GM; Veen MP van; LBO

    1997-01-01

    Analysis of inhalatory exposure to air pollution is an important area of investigation when assessing the risks of air pollution for human health. Inhalatory exposure research focuses on the exposure of humans to air pollutants and the entry of these pollutants into the human respiratory tract. The principal grounds for studying the inhalatory exposure of humans to air pollutants are formed by the need for realistic exposure/dose estimates to evaluate the health effects of these pollutants. T...

  16. AirPEx: Air Pollution Exposure Model

    NARCIS (Netherlands)

    Freijer JI; Bloemen HJTh; Loos S de; Marra M; Rombout PJA; Steentjes GM; Veen MP van; LBO

    1997-01-01

    Analysis of inhalatory exposure to air pollution is an important area of investigation when assessing the risks of air pollution for human health. Inhalatory exposure research focuses on the exposure of humans to air pollutants and the entry of these pollutants into the human respiratory tract. The

  17. Air Pollution Monitoring | Air Quality Planning & Standards ...

    Science.gov (United States)

    2016-06-08

    The basic mission of the Office of Air Quality Planning and Standards is to preserve and improve the quality of our nation's air. To accomplish this, OAQPS must be able to evaluate the status of the atmosphere as compared to clean air standards and historical information.

  18. Development of a product data model to support an integral planning of buildings and their heating- and air conditioning devices; Entwicklung eines Produktdatenmodells zur Unterstuetzung der integralen Planung von Gebaeuden und ihrer heiz- und raumlufttechnischen Anlagen

    Energy Technology Data Exchange (ETDEWEB)

    Hinkelmann, M.

    2000-08-01

    The life-cycle of technical systems is to a large extent identical. A system is planned, then established and commissioned. Finally the normal operation begins. Maintenance is executed during the normal operation in regular time intervals. In longer time intervals, extensive renewals become necessary. The schedule of a renovation is identical with the schedule of new planning. In every phase of the life-cycle, software tools are applied for the evaluation of the planning and/or operating states and to support the different tasks. The efficiency of these tools depends significantly on a seamless data exchange. It is therefore necessary to find a schema that enables the integration of the tools for planning, operation and renovation. In this work, a scenario is developed for integration of planning and evaluation tools for HVAC systems. The scenario is based on the conditions of the usual course of planning with different, stand-alone planners. Main part of this scenario is a product data model, that provides a flexible and open description of the building and its technical systems. A meta model is proposed as a superordinate structure. With its aid the product data model gets a uniform structure and is represented in manageable form. Moreover, the meta model supports the extensions of the data model since extensions can first be discussed on the abstract level of the meta model and than in a second step may be formulated in detail. In order to avoid mapping a great number of technical components a general data model for technical components which is implemented with the aid of an abstract data type 'parameter' is proposed. The system implemented within the frame of this work enables extraction of simulation models for the thermal evaluation of buildings directly from the design process. It is shown how this system can be integrated into a cooperative design process. The operational integrity of the scenario is demonstrated with the help of an example. (orig.) [German] Der Lebenszyklus aller technischen Anlagen ist weitgehend gleich. Eine Anlage wird zunaechst geplant, dann errichtet und abgenommen, anschliessend beginnt der normale Betrieb. Im regulaeren Betrieb wird in regelmaessigen Zeitabstaenden eine Wartung durchgefuehrt. In groesseren Abstaenden werden umfangreiche Erneuerungen, Renovierungen, notwendig. Der zeitliche Ablauf eiener Renovierung ist wie der zeitliche Ablauf einer Neuplanung. In jeder Phase des Lebenszyklus werden Software-Werkzeuge zur Bewertung der Planungs- bzw. Betriebszustaende und zur Unterstuetzung der Planungsaufgaben eingesetzt. Die Effizienz dieser Werkzeuge haengt entscheidend von einem reibungslosen Datenaustausch ab. Es gilt daher ein Schema zu finden, das die Integration der Software-Werkzeuge fuer Planung, Betrieb und Renovierung ermoeglicht. In der vorliegenden Arbeit wird ein Szenario zur Integration von Planungs- und Bewertungswerkzeugen fuer HLK-Anlagen entwickelt. Das Szenario orientiert sich an den Gegebenheiten des heute ueblichen Planungsablaufs mit verschiedenen unabhaengigen Planern. Zentraler Bestandteil dieses Szenarios ist ein Produktdatenmodell, das sich durch eine flexible und offene Beschreibung von Gebaeude und technischer Anlage auszeichnet. Es wird eine, als ein Metamodell bezeichnete, uebergeordnete Struktur vorgeschlagen, mit deren Hilfe das Produktdatenmodell einheitlich und ueberschaubar dargestellt werden kann. Das Metamodell erleichtert zudem die Erweiterungen des Datenmodells, da Erweiterungen zunaechst auf der abstrakten Ebene des Metamodells behandelt werden koennen und erst in einem zweiten Schritt ausformuliert werden. Um nicht eine Vielzahl von technischen Komponenten abbilden zu muessen, wird ein allgemeines Datenmodell fuer technische Komponenten vorgeschlagen, das mit Hilfe eines abstrakten Datentyps 'Parameter' implementiert wird. Das im Rahmen dieser Arbeit implementierte System ermoeglicht erstmalig, Simulationsmodelle fuer das thermische Verhalten eines Gebaeudes direkt aus dem Planungsprozess abzuleiten. Es wird aufgezeigt, wie d

  19. REACH. Air Conditioning Units.

    Science.gov (United States)

    Garrison, Joe; And Others

    As a part of the REACH (Refrigeration, Electro-Mechanical, Air-Conditioning, Heating) electromechanical cluster, this student manual contains individualized instructional units in the area of air conditioning. The instructional units focus on air conditioning fundamentals, window air conditioning, system and installation, troubleshooting and…

  20. Statistical air quality mapping

    NARCIS (Netherlands)

    Kassteele, van de J.

    2006-01-01

    This thesis handles statistical mapping of air quality data. Policy makers require more and more detailed air quality information to take measures to improve air quality. Besides, researchers need detailed air quality information to assess health effects. Accurate and spatially highly resolved maps

  1. The Prevalence of Power-Sharing: Exploring the Patterns of Post-Election Peace Die Verbreitung von Power-Sharing: Bedingungen für eine friedliche Entwicklung nach Wahlen

    Directory of Open Access Journals (Sweden)

    Anna K. Jarstad

    2009-01-01

    Statistiken aus der Post-Accord Elections (PAE Datensammlung, die in diesem Artikel präsentiert werden, haben gleichwohl ergeben, dass Frieden, Power-Sharing und Demokratie eng miteinander verflochten sind; Friedensabkommen sehen heute in den meisten Fällen sowohl Power-Sharing als auch Wahlen vor. Im Gegensatz zu früheren Forschungen, die von der Annahme ausgingen, das Power-Sharing ein Instrument zur Beendigung von Gewalt darstellt, belegen die Daten, dass der Konflikt häufig nach Unterzeichnung eines Abkommens fortlebt, auch wenn Regelungen zur Machtteilung vorgesehen sind. Dass Power-Sharing Wahlen begünstigt, lässt sich nicht belegen; im Gegenteil, es kommt häufiger vor, dass nach einem Friedensprozess ohne Power-Sharing-Abkommen Wahlen abgehalten werden. Eine Periode der Machtteilung vor Wahlen scheint eine anschließende friedliche Entwicklung nicht zu fördern; Wahlen sind in diesem Fall ähnlich konfliktreich wie Wahlen, die nach Friedensvereinbarungen ohne Machtteilungsklauseln abgehalten wurden. Als gute Nachricht kann gelten, dass Power-Sharing keinen negativen Effekt auf eine friedliche Entwicklung nach Wahlen zu haben scheint.

  2. eWin - european Waste information network - strategic planning and development of a European waste information network; eWin- european Waste information network - Strategische Planung und Entwicklung eines europaeischen Abfall-Informations-Netzwerkes

    Energy Technology Data Exchange (ETDEWEB)

    Kessler, M. [eWin - europaen Waste information network, Witzenhausen (Germany); Aravossis, K. [Arvis and Co., Athens (Greece)

    2001-07-01

    Eight commercial and scientific institutions of six EC member states started in January 1999 with the development of a novel, internet-based European waste information system. The two-year project was co-ordinated by Gesamthochschule Kassel University, Hessischer Forschungsverbund Abfall (HFvA) and was funded by the European Union in the context of the INFO 2000 programme. The project eWin was to provide an internet portal to a wide range of information from different fields of waste management and research. In particular, all waste-relevant national databases were to be contained in eWin. They were to be constantly updated and accessed. [German] Acht kommerzielle und wissenschaftliche Institutionen aus sechs EU-Mitgliedslaendern haben im Januar 1999 damit begonnen, ein neuartiges europaeisches Abfall-Informationssystem aufzubauen, das im Internet angeboten werden sollte. Die Entwicklung des Gemeinschaftsprojektes war auf zwei Jahre konzipiert, die Projektkoordination lag beim Hessischen Forschungsverbund Abfall (HFvA) an der Gesamthochschule Kassel. Das Vorhaben wurde von der Europaeischen Union im Rahmen des EU-Programms INFO 2000 gefoerdert. Mit dem Projekt eWin (european Waste information network) sollte im Internet eine Plattform geschaffen werden, mit der laenderuebergreifend gezielt und effektiv ein breites Spektrum von Informationen aus verschiedenen Bereichen der Abfallwirtschaft und -forschung erreichbar gemacht wird. Durch eWin sollten die verstreut vorliegenden Informationen aufbereitet und ueber die Web-Technologie nach internationalen Standards allgemein zugaenglich gemacht werden. Vor allem sollten alle abfallrelevanten Datenbanken in den verschiedenen Laendern zum Bestandteil von eWin werden. Die dort gespeicherten Informationen sollten zugleich auf den aktuellen Stand fortgeschrieben und regelmaessig abgerufen werden. (orig.)

  3. Pressurized fluidized-bed power stations. Combined cycle power plants with fluidized-bed combustion, with particular regard to emissions; Druckwirbelschicht-Kraftwerke. Kombikraftwerke mit Druckwirbelschichtfeuerung - Entwicklung fuer Braunkohle unter besonderer Beruecksichtigung des Emissionsverhaltens

    Energy Technology Data Exchange (ETDEWEB)

    Chalupnik, R.W.

    1999-07-01

    Investigations were carried out to find whether this technology is suited for lignite. The state of the art of the pressurized fluidized bed technology for coal is presented. The planning of the experimental programme is explained, including unresolved problems of thermal calculation, raw lignite transport characteristics, and emissions. Emissions of atmospheric and pressurized fluidized bed combustion of coal and lignite are compared, and the results of a theoretical investigation of the potential performance are presented. Recommendations are made for further studies, and an outlook is given to future 'second generation' concepts with higher efficiencies resulting from higher gas turbine inlet temperatures. [German] Die vorliegende Arbeit berichtet ueber die Entwicklung der Kombikraftwerkstechnik mit Druckwirbelschichttechnik. Nachdem die bisherigen Aktivitaeten weltweit fast ausschliesslich fuer den Einsatz von Steinkohle betrieben wurden, bestand die Aufgabenstellung in der Erarbeitung von ersten grundlegenden Ergebnissen, aufgrund derer zu beurteilen war, ob die Druckwirbelschichttechnik fuer den Einsatz von Braunkohle geeignet ist. Kapitel 2 stellt den Stand der Technik der Druckwirbelschichtverbrennung fuer Steinkohle dar. In Kapitel 3 wird die Planung des Versuchsprogramms erlaeutert, die sich an den offenen Fragestellungen zu den waermetechnischen Rechnungen, zum Foerderverhalten von Rohbraunkohle und zum Emissionsverhalten orientierte. In der Diskussion der Ergebnisse in Kapitel 4 erfolgt eine Einordnung und Bewertung der ermittelten Emissionswerte im Vergleich zur Wirbelschichtverbrennung unter atmosphaerischen und druckaufgeladenen Bedingungen von Stein- und Braunkohle. In Kapitel 5 schliesslich werden die Ergebnisse einer durchgefuehrten theoretischen Untersuchung zur Ermittlung des Wirkungsgradpotentials dargestellt. Ferner werden Empfehlungen fuer ergaenzende, weiterfuehrende Untersuchungen gegeben. Fuer die langfristige potentielle

  4. Geological structure and the history of hydrocarbon exploration in the area of the Luetow and Heringsdorf structures on the island of Usedom; Geologischer Bau und Entwicklung der Erdoelprospektion im Bereich der Strukturen Luetow und Heringsdorf/Usedom

    Energy Technology Data Exchange (ETDEWEB)

    Beer, H. [Landesamt fuer Geowissenschaften und Rohstoffe Brandenburg, Kleinmachnow (Germany); Muenzberger, E. [Geologisches Inst., Greifswald Univ. (Germany); Sommer, S. [Erdoel-Erdgas Gommern GmbH, Gommern (Germany)

    1993-12-31

    Economic oil and gas accumulations were discovered in the marginal facies of the Stassfurt carbonate as a result of exploration work for oil and gas on the northeastern margin of the German Zechstein Basin. The accumulations are associated with anticlinal structures on the shelf margin, the carbonate-sand barrier zone. Carbonate sands (grainstone, in some cases packstone) form the reservoirs; in most of them the true porosity is accompanied by a minor joint porosity, and often the top of the reservoir is cemented by anhydrite. All deposits are filled with hydrocarbons up to the spill point; the traps are inferred to have been filled during Late Kimmerian to Laramian, some of them post Laramian. An account is given of the exploration methods, the geological structure, the development of the trap structure, the nature of the reservoir, and data on the type of deposit and production methods used. (orig.) [Deutsch] Prospektionsarbeiten auf Erdoel-Erdgasvorkommen am NE-Rand des Germanischen Zechsteinbeckens haben in der randnahen Fazies des Stassfurtkarbonats wirtschaftlich fuendige Oel- und Gas-Lagerstaetten erschlossen. Die Vorkommen sind an antiklinalartige Strukturen des Plattformrandes, and die Karbonatsand-Barrenzone gebunden. Speicher sind Karbonatsande (grainstone, z.T. packstone), ausgebildet als Porenspeicher, meist mit Kluftspeicheranteilen, gegen das Hangende haeufig anhydritzementiert. Alle Lager sind bis zum spill-point KW-gefuellt; die Fallenfuellung wird spaetkimmerisch bis laramisch, teils postlaramisch angesetzt. Dargestellt werden die Aufschlussmethodik, der geologische Aufbau und die Entwicklung der Struktur/Falle, die Speicherbeschaffenheit bis hin zu speziellen Daten des Lagerstaettencharakters und des Lagerstaettenabbaus. (orig.)

  5. Application of laser-optical diagnostics for the support of direct-injection gasoline combustion process development; Einsatz laseroptischer Messverfahren zur Unterstuetzung der Entwicklung von Brennverfahren mit Benzin-Direkteinspritzung

    Energy Technology Data Exchange (ETDEWEB)

    Hentschel, W.; Meyer, H.; Stiebels, B. [Volkswagenwerk AG, Wolfsburg (Germany). Abt. Forschung und Entwicklung

    2000-07-01

    The development of direct-injection gasoline engines at Volkswagen was supported strictly from the beginning by the means of optical diagnostics and CFD-simulations. Basic phenomena, such as the formation of the in-cylinder flow field, the penetration of the spray formed by a hollow-cone swirl-type injector at high fuel pressure, the interaction of spray and flow and the formation of an ignitable mixture were analysed in details. The paper describes the laser-optical techniques-particle-image-velocimetry, laser-Doppler-anemometry, videostroboscopy, high-speed cinematography and laser-induced fluorescence - which were used during the development of the DI gasoline combustion process. Examples taken from engines with optical access to the combustion chamber demonstrate the capability of the techniques and pinpoint where the design of the combustion process benefits from experimental and simulation investigations. (orig.) [German] Die Entwicklung von Ottomotoren mit Benzin-Direkteinspritzung wurde bei Volkswagen von Beginn an konsequent durch den Einsatz optischer Messverfahren und CFD-Simulationen unterstuetzt. Damit konnten grundlegende Phaenomene, wie die Ausbildung des Stroemungsfeldes im Motorbrennraum, die Ausbreitung des durch einen Hohlkegel-Drallinjektor unter hohem Druck eingespritzten Kraftstoffs sowie die Wechselwirkung der Luftstroemung im Zylinder mit den Einspritzstrahlen und die Bildung einer zuendfaehigen Ladungswolke detailliert untersucht werden. Das Paper beschreibt die laseroptischen Messverfahren - Particle-Image-Velocimetry, Laser-Doppler-Anemometry, Video-Stroboskopie, Hochgeschwindikgkeits-Kinematographie und Laserinduzierte Fluoreszenz - die bei der Brennverfahrensentwicklung eingesetzt werden und zeigt anhand einer Reihe von konkreten Beispielen, wo Antworten auf Grundsatzfragen zur Auslegung des Brennverfahrens durch Messergebnisse an optisch zugaenglichen Motoren und durch CFD-Simulationen erarbeitet werden koennen. (orig.)

  6. Aerodynamic effects on the heat absorption of film-cooled turbine blades. Development of the measurement technique. Final report; Einfluss der Aerodynamik auf die Waermeaufnahme filmgekuehlter Turbinenschaufeln. Entwicklung der Messtechnik. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Wittig, S.; Schiele, R.; Schulz, A.

    1996-12-31

    A measuring system is to be developed that enables high-resolution heat transfer measurements on turbine blades. The method of measurement is both theoretical and experimental. Heat transfer is calculated on the basis of the temperature field in the blade via the temperature gradients normal to the blade surface. The temperature field is calculated using a finite element method. The thermal boundary conditions for the calulations are derived from the experiment. The spatial resolution of the method depends primarily on the temperature measurement at the blade surface. In the experiments, an IR scanner was used for detailed surface temperature measurements, and a resolution of 0.5 mm was achieved in both spatial directions. Higher resolutions may be obtained by using objectives with a better focus. For maximum accuracy of the measurements, the data prvided by the thermocamera were calibrated by a comparison with thermoelements using a method developed at the Institut fuer Thermische Stroemungsmaschinen. (orig.) [Deutsch] Im Rahmen des vorliegenden Forschungsvorhabens soll die Entwicklung einer Messtechnik vorangetrieben werden, die die Ermittlung des Waermeuebergangs an ausgefuehrten Turbinenschaufeln mit hoher Aufloesung ermoeglicht. Die Messmethode hat sowohl experimentellen als auch theoretischen Charakter. Mit ihr wird der Waermeuebergang ueber den Umweg der Berechnung des Temperaturfeldes in der Schaufel aus den Temperaturgradienten normal zur Schaufeloberflaeche gebildet. Die Berechnung des Temperaturfeldes erfolgt mit Hilfe eines Finite-Elemente-Verfahrens. Die thermischen Randbedingungen fuer die Berechnung kommen aus dem Experiment. Das raeumliche Aufloesungsvermoegen des Verfahrens haengt im wesentlichen von der Temperaturmessung an der Schaufeloberflaeche ab. Im Rahmen des Vorhabens wurde daher ein Infrarotscanner eingesetzt, mit dem die Oberflaechentemperaturen detailliert erfasst werden. In dem verwendeten Aufbau betraegt die Aufloesung in beiden

  7. Air movement and perceived air quality

    DEFF Research Database (Denmark)

    Melikov, Arsen Krikor; Kaczmarczyk, J.

    2012-01-01

    The impact of air movement on perceived air quality (PAQ) and sick building syndrome (SBS) symptoms was studied. In total, 124 human subjects participated in four series of experiments performed in climate chambers at different combinations of room air temperature (20, 23, 26 and 28 °C), relative...... and the humidity of the room air. At a low humidity level of 30% an increased velocity could compensate for the decrease in perceived air quality due to an elevated temperature ranging from 20 °C to 26 °C. In a room with 26 °C, increased air movement was also able to compensate for an increase in humidity from 30...

  8. Development of a test system for the inspection of the phytotoxicity of gases; Entwicklung eines Testsystems zur Ueberpruefung der Phytotoxizitaet von Gasen

    Energy Technology Data Exchange (ETDEWEB)

    Koennecker, G.

    1989-12-20

    On the basis of the Continuous Stirred Tank Reactor (CSTR) design, a standard test system with which the toxic effect of gases on higher plants can be checked was developed. Multiple units of the exposure system can be added to a central air control for fresh-air and off-air blowers. The simple construction guarantees a problem-free reconstruction and an easy handling of the system. The dose/effect experiments were carried out with Phaseolus vulgaris and Zea mays and sulphur dioxide. Effect criteria for the plant reaction were the yield parameters: fresh weight and dry weight; sprout/root ratio; fresh weight/dry weight ratio; transpiration coefficient; sulphur concentration. Three-week application of sulphur dioxide caused in the case of the dwarf french bean a significant reduction of the yield parameters. The exposed maize plants, on the other hand, partly reacted to the gas exposure with a clear stimulation of some of the yield parameters. In the case of most yield parameters, there was a linear relationship between the applied toxic gas concentration and the observed plant reaction. (orig./VHE). [Deutsch] Basierend auf dem Konzept des `Continuous Stirred Tank Reactor` (CSTR) wurde ein Standard-Testsystem entwickelt, mit dem die toxische Wirkung von Gasen auf hoehere Pflanzen ueberprueft werden kann. Multiple Einheiten des Expositionssystems (Begasungskammern) koennen in klimatisierten Raeumen an ein zentrales Luftfuehrungssystem mit getrennter Regelung fuer Zu- und Abluftgeblaese angeschlossen werden. Die einfache Konstruktion gewaehrleistet einen problemlosen Nachbau und eine leichte Handhabung des Systems. Dosis-Wirkungs-Experimente wurden mit Phaseolus vulgaris und Zea mays und Schwefeldioxid vorgenommen. Wirkungskriterien fuer die Pflanzenreaktion waren die Ertragsparameter Frisch- und Trockengewicht, absolute und spezifische Blattflaeche, Blattgewicht/Gesamtgewicht-Verhaeltnis, Spross/Wurzel-Verhaeltnis, Frischgewicht

  9. Validierung einer deutschen Version der “Culturally Responsive Classroom Management Self-Efficacy Scale"

    OpenAIRE

    Civitillo, Sauro; Juang, Linda; Schachner, Maja; Börnert, Moritz

    2016-01-01

    Die Culturally Responsive Classroom Management Self-Efficacy Scale (CRCMSES; Siwatu, Putman, Starker-Glass & Lewis, 2015) stellt ein neues Instrument zur Erfassung der Selbstwirksamkeit hinsichtlich kultursensiblen Classroom Managements von Lehrkräften dar. Die vorliegende Studie hat zum Ziel, die eindimensionale Struktur einer für den deutschsprachigen Raum adaptierten Version des CRCMSES mit Hilfe von explorativen und konfirmatorischen Faktorenanalysen zu bestätigen. Dazu wurde das Instrume...

  10. Connectable solar air collectors

    Energy Technology Data Exchange (ETDEWEB)

    Oestergaard Jensen, S.; Bosanac, M.

    2002-02-01

    The project has proved that it is possible to manufacture solar air collector panels, which in an easy way can be connected into large collector arrays with integrated ducting without loss of efficiency. The developed connectable solar air collectors are based on the use of matrix absorbers in the form of perforated metal sheets. Three interconnected solar air collectors of the above type - each with an transparent area of approx. 3 m{sup 2} - was tested and compared with parallel tests on two single solar air collectors also with a transparent area of approx. 3 m{sup 2} One of the single solar air collectors has an identical absorber as the connectable solar air collectors while the absorber of the other single solar air collector was a fibre cloth. The efficiency of the three solar air collectors proved to be almost identical in the investigated range of mass flow rates and temperature differences. The solar air collectors further proved to be very efficient - as efficient as the second most efficient solar air collectors tested in the IEA task 19 project Solar Air Systems. Some problems remain although to be solved: the pressure drop across especially the connectable solar air collectors is too high - mainly across the inlets of the solar air collectors. It should, however, be possible to considerably reduce the pressure losses with a more aerodynamic design of the inlet and outlet of the solar air collectors; The connectable solar air collectors are easy connectable but the air tightness of the connections in the present form is not good enough. As leakage leads to lower efficiencies focus should be put on making the connections more air tight without loosing the easiness in connecting the solar air collectors. As a spin off of the project a simple and easy way to determine the efficiency of solar, air collectors for pre-heating of fresh air has been validated. The simple method of determining the efficiency has with success been compared with an advance method

  11. AirCompare

    Data.gov (United States)

    U.S. Environmental Protection Agency — AirCompare contains air quality information that allows a user to compare conditions in different localities over time and compare conditions in the same location...

  12. Allegheny County Air Quality

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — Air quality data from Allegheny County Health Department monitors throughout the county. Air quality monitored data must be verified by qualified individuals before...

  13. Air Quality Facilities

    Data.gov (United States)

    Iowa State University GIS Support and Research Facility — Facilities with operating permits for Title V of the Federal Clean Air Act, as well as facilities required to submit an air emissions inventory, and other facilities...

  14. Indoor Air Pollution

    Science.gov (United States)

    We usually think of air pollution as being outdoors, but the air in your house or office could also be polluted. Sources of indoor pollution include Mold and pollen Tobacco smoke Household products ...

  15. Air Quality System (AQS)

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Air Quality System (AQS) database contains measurements of air pollutant concentrations from throughout the United States and its territories. The measurements...

  16. Air Power and Warfare

    Science.gov (United States)

    1978-09-01

    Memorial, 1963. (T) 767.8 A3 ser .3, V.4) Air war against Germany and Italy, 1939-1943. Canberra: Australian War Memorial, 1954. (D 767.8 A3 Ser .3, V.3...et al. Air poder indivisible Air University Ouarterly Review 2:5-18, Fall 1950. Spaatz, Crrl. Air-power odds against us. Readers Digest 58:11-14, June

  17. Indoor air quality

    DEFF Research Database (Denmark)

    Jensen, Trine Susanne; Recevska, Ieva

     The objective of the 35th specific agreement is to provide support to the EEA activities in Environment and Health (E&H) on the topic of indoor air quality. The specific objectives have been to provide an overview of indoor air related projects in EU and indoor air related policies as well...... as idenfiying "good practices" to reduce health impact of indoor air exposure and suggest areas for future improvements....

  18. Development and characterization of a portable high-temperature PEM fuel cell system; Entwicklung und Charakterisierung eines portablen Hochtemperatur-PEM-Brennstoffzellensystems

    Energy Technology Data Exchange (ETDEWEB)

    Kurz, Timo

    2011-07-01

    In this thesis, the development of a High Temperature Polymer Electrolyte Membrane Fuel Cell (HT-PEMFC) system prototype is presented. In order to identify appropriate operating conditions and design factors, the development is supported by characterisation and modelling of HT-PEM single cells. The specific properties of this fuel cell type, together with the modelling and characterisation results, are used to achieve a compact and portable system design. Two non-isothermal 2D models are developed and coupled to each other in order to obtain fast and precise calculations in all dimensions in the cell. The models account for the conservation of mass, momentum, species, charge and energy. Additionally, the CO tolerance is investigated in detail. This is achieved by calculating catalyst coverage with four different species on the anode catalyst layer. The modelling results are validated using experimental data over a wide operating range. With the two coupled models, variations caused by different channel-rib structures, both parallel and perpendicular to the channel are investigated and optimal channel-rib ratios are identified. Based on the modelling and experimental results, the design of a compact and portable HT-PEMFC stack module is presented. The aim of the prototype development is to construct a modular system with high power density that meets the specific demands of HT-PEMFC operation. In order to reach this goal, innovative constructive details are developed: Stack compression is achieved with an aramid fibre coil to reduce weight and volume compared to threaded bolts. The development of this compression design is supported by experimental and modelling work. The principle of an open cathode is applied to combine the cathode-fed stream with the air cooling by only one channel, reducing the balance of plant. The air channel configuration is designed with the aid of Computational Fluid Dynamics. The developed channel design helps to maintain a small pressure

  19. Development of a 5 kW fuel cell APU with integrated Diesel reformer; Entwicklung einer 5 kW Brennstoffzellen-APU mit integriertem Diesel-Reformer

    Energy Technology Data Exchange (ETDEWEB)

    Womann, M.; Weinert, R.; Garcia, P. (Tenneco - Heinrich Gillet GmbH, Edenkoben)

    2008-07-01

    Fuel cell systems have great potential to play a key role in our everyday life. Especially in mobile applications, fuel cells will help to increase system efficiencies, to avoid the release of greenhouse gases and to move to a future sustainable mobility. While fuel cell propulsion systems offer great mid- and long-term perspectives, Fuel Cell Auxiliary Power Units (APU) have a real chance to reduce fuel consumption and pollution within the next years by offering an alternative to truck idling. One of the most promising technologies for APUs are PEM (Proton Exchange Membrane) fuel cell systems that are running on diesel reformate. This technology is supported by the European Commission's Sixth Framework Program. Part of this program is the HyTRAN project. 19 partners under the lead of the VOLVO Technology Corporation are developing two innovative, fully integrated and compact fuel cell systems. An important outcome from the project is a complete Fuel Cell APU that uses newly developed components like fuel processor and air compressor. The system was first integrated virtually with CATIA V5. Modular build-up, material, space frame, insulation, system simulations and pressure drop calculations were important issues that had to be worked on. Based on the virtual study, a prototype of the system has been built that will be tested in the next step. (orig.)

  20. Limits of research and development. Energy efficiency in the vapour refrigerating compressor technology; Grenzen von Forschung und Entwicklung. Energieeffizienz in der Kaltdampfkompressionstechnik

    Energy Technology Data Exchange (ETDEWEB)

    Engelking, Stephan [Duale Hochschule Baden-Wuerttemberg, Ravensburg (Germany); Arnemann, Michael [Hochschule Karlsruhe (Germany). Fakultaet fuer Maschinenbau und Mechatronik; Schwarz, Joern [Ice-Tex Ingenieurbuero, Neubrandenburg (Germany)

    2009-10-15

    Research and development within the range of the refrigeration technology have large potentials for components, processing, refrigerants and priority monitoring systems. Altogether increases of the energy efficiency between 30 and 50 % are possible. The contribution under consideration is the extended manuscript of a lecture on the occasion of the grant of three awards of the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (Berlin, Federal Republic of Germany) for high-efficient refrigeration - air conditioning technologies. In the category 'Refrigeration components and refrigeration systems', the company Wurm GmbH (Remscheid, Federal Republic of Germany) received an award for the monitoring system 'Frigotakt plus', which entirely and foresightedly regulates the refrigeration systems, automatic controllers and condensors and enables an increase of the energy efficiency of nearly 50 %. The companies Daikin Airconditioning GmbH (Unterhaching, Federal Republic of Germany) and Hauser GmbH which develop systems for the use of the waste heat of refrigerators for small and large supermarkets received the award for 'refrigeration and heating'. The network 'cooling efficiency Hamburg' received the third award for its campaign to lower the energy consumption of refrigerant plants in Hamburg's companies by energy-efficient and innovative refrigeration technology.

  1. We Pollute the Air

    Institute of Scientific and Technical Information of China (English)

    2002-01-01

    1.Clean air is important to good health.If the aircontains impurities,they may be absorbed by ourbodies and make us ill.We need clean air,butunfortunately,air pollution is generally present,especially in cities. 2.Our cities have many factories,which we need tomake food products,clothing and many other things.

  2. Air Pollution Training Programs.

    Science.gov (United States)

    Public Health Service (DHEW), Rockville, MD.

    This catalog lists the universities, both supported and not supported by the Division of Air Pollution, which offer graduate programs in the field of air pollution. The catalog briefly describes the programs and their entrance requirements, the requirements, qualifications and terms of special fellowships offered by the Division of Air Pollution.…

  3. Manual for THOR-AirPAS - air pollution assessment system

    DEFF Research Database (Denmark)

    Jensen, Steen Solvang; Ketzel, Matthias; Brandt, Jørgen

    The report provides an outline of the THOR-AirPAS - air pollution assessment system and a brief manual for getting started with the air quality models and input data included in THOR-AirPAS.......The report provides an outline of the THOR-AirPAS - air pollution assessment system and a brief manual for getting started with the air quality models and input data included in THOR-AirPAS....

  4. Air Conditioning Does Reduce Air Pollution Indoors

    Science.gov (United States)

    Healy, Bud

    1970-01-01

    Report of the winter meeting of the American Society of Heating, Refrigerating and Air-Conditioning Engineers. Subjects covered are--(1) title subject, (2) predictions for the human habitat in 1994, (3) fans, and (4) fire safety in buildings. (JW)

  5. Environmental research - development of the material balance of oak tree ecosystems on quaternary spoil bank substrates of coal mines; Umweltforschung - Entwicklung des Stoffhaushaltes von Eichenoekosystemen auf quartaeren Kippsubstraten des Braunkohlenbergbaues

    Energy Technology Data Exchange (ETDEWEB)

    Katzur, J.; Knoche, D.

    2000-07-01

    ersten Bestandsgeneration aus waldbaulicher Perspektive stabile und mit vertretbarem Aufwand zu bewirtschaftende Oekosysteme entwickeln. Analogieschluesse anhand gleichaltriger Systeme des unverritzten Tagebauumfeldes sind aufgrund der unterschiedlichen Substratverhaeltnisse bzw. der abweichenden Randbedingungen (u.a. Depositionsgeschehen, Mesoklima) zunaechst nicht moeglich. Nach wie vor fehlen adaequate, auf oekosystemaren Wasser- und Stofffluessen basierende Systeminformationen. Uebergeordnetes Ziel des Vorhabens ist es, die Entwicklung von Laubholz-Oekosystemen auf quartaeren Kippsubstraten anhand von Wasser- und Stoffhaushaltskrietierien zu quantifizieren. Es sollen Richtung und Groessenordnung der Veraenderungen in den Oekosysteme abgeschaetzt werden. Im Rahmen einer 3 gliedrigen Roteichenchronosequenz (Boxberg: Q.rubra L., 2 Jahre; Kleinleipisch: Q.rubra L., 21 Jahre und Annahuette: Q.rubra L., 63 Jahre) auf quartaeren Kipp-Sanden wird die oekosystemare Wasser- und Stoffhaushaltscharakteristik u.a. unter Anwendung des Bilanzierungsansatzes kompartimentbezogen ermittelt und mit den Ergebnissen eines unverritzten Referenzstandorts des Tagebauumlands (Neusorgefeld: Q.rubra L., 41 Jahre) verglichen. (orig.)

  6. Development of a measuring and evaluation method for X-ray analysis of residual stresses in the surface region of polycrystalline materials; Entwicklung eines Mess- und Auswerteverfahrens zur roentgenographischen Analyse des Eigenspannungszustandes im Oberflaechenbereich vielkristalliner Werkstoffe

    Energy Technology Data Exchange (ETDEWEB)

    Genzel, C.

    2000-11-01

    The topic of the habilitation thesis is the development of an X-ray diffraction method for measurement and depth-resolved analysis of internal stresses in the surface region of polycrystalline materials. The method relies on the basic approach of varying {tau}, the penetration depth of the X-rays in the materials, by the scattering vector g{sub theta{psi}} via stepwise specimen rotation. Thus, depth profiles of the interlattice plane distances d(hkl) in the specimen system can be derived for given direction and inclination angles {theta} and {psi} of the scattering vector. This offers the possibility to identify individual components of the stress tensors of the basic equation of the X-ray diffraction analysis, and to perform separate analyses of those components. For calculation of the relevant internal stress distributions {sigma}{sub ij}({tau}) using the interlattice plane distance profiles, a self-consistent method is established which takes into account the high sensitivity of the derived internal stresses in relation to the interlattice plane distance d{sub 0}(hkl) in the stress-free crystal lattice. The evaluation yields results describing the depth profiles as well as the strain-free interlattice plane distance d{sub 0}(hkl), so that a quantitative analysis is possible of tri-axial internal stress states in the surface region of the materials. (orig./CB) [German] Den Gegenstand der vorliegenden Arbeit bildet die Entwicklung eines roentgenographischen Mess- und Auswerteverfahrens zur tiefenaufgeloesten Analyse des oberflaechennahen Eigenspannungszustandes in vielkristallinen Werkstoffen. Der Grundgedanke der Methode besteht darin, die Eindringtiefe {tau} der Roentgenstrahlung in den Werkstoff durch schrittweise Drehung der Probe um den Streuvektor g{sub {theta}}{sub {psi}} zu variieren. Damit koennen Tiefenprofile der Netzebenenabstaende d(hkl) fuer fest vorgegebene Azimut- und Neigungswinkel {theta} und {psi} des Streuvektors im Probensystem ermittelt

  7. Development of new heterogeneous catalysts for the decomposition of methanol into hydrogen and carbon monoxide applying high throughput methods; Entwicklung neuer heterogener Katalysatoren zur Spaltung von Methanol in Wasserstoff und Kohlenmonoxid mittels Hochdurchsatz-Methoden

    Energy Technology Data Exchange (ETDEWEB)

    Weiss, Torsten

    2008-07-11

    The topic of this thesis has been the development of new heterogeneous catalysts for the decomposition of methanol into hydrogen and carbon monoxide. As an important constraint here, the content of noble metals of the catalysts should be as low as possible. High-throughput-methods were applied in some of the syntheses and experiments to accelerate the development, as, for example, the use of liquid based sol-gel syntheses and the examination of catalyst libraries by spatial resolution gas chromatography. This screening technique allowed to test up to 207 different substances during one single experiment. Then, different combinatorial strategies were applied. First, these methods led to a highly active and stable catalyst in the ternary system of Cu-Ni-Zn, which showed high conversion and selectivity comparable to an industrial reference catalyst. Its activity during an 18 hour long term run was constant in contrast to the reference. Second, an additional approach starting from a broader variety of elements led to a Ce- Ru- and to a Cr-Ru-catalyst. Both of them were highly active in short term experiments, but lost their outstanding performances during long term runs. (orig.) [German] Die vorliegende Arbeit befasste sich mit der Entwicklung neuer heterogener Katalysatoren fuer die Spaltung von Methanol zu Wasserstoff und Kohlenmonoxid, die einen moeglichst geringen Gehalt an Edelmetallen aufweisen sollten. Um diesen Prozess zu beschleunigen, wurden in einem Teil der Synthesen und Experimente Hochdurchsatzmethoden verwendet. Neben der Roboter gestuetzten Sol-Gel-Synthese umfasste dies die Untersuchung von Katalysatorbibliotheken mittels ortsaufgeloester Gaschromatographie, die es ermoeglichte, in einem Experiment bis zu 207 verschiedene Substanzen auf ihre katalytische Aktivitaet zu testen. Unter Anwendung verschiedener kombinatorischer Strategien wurde zunaechst ein sehr aktiver und stabiler Katalysator im ternaeren Cu-Ni-Zn-System entdeckt. Neben Umsaetzen und

  8. Air filtration in HVAC systems

    CERN Document Server

    Ginestet, Alain; Tronville, Paolo; Hyttinen, Marko

    2010-01-01

    Air filtration Guidebook will help the designer and user to understand the background and criteria for air filtration, how to select air filters and avoid problems associated with hygienic and other conditions at operation of air filters. The selection of air filters is based on external conditions such as levels of existing pollutants, indoor air quality and energy efficiency requirements.

  9. 走近Air

    Institute of Scientific and Technical Information of China (English)

    马华

    2007-01-01

    @@ 大家对air这个单词并不陌生,它通常用作名词,表示"空气".例如: 1.Better let in fresh air. 最好让新鲜空气进来. 2.The air smells of paint. 空气里散发着油漆味. 3.The air was heavy with perfume of the flowers. 空气里弥漫着花朵的芳香.

  10. Contact air abrasion.

    Science.gov (United States)

    Porth, R

    1999-05-01

    The advantages of contact air abrasion techniques are readily apparent. The first, of course, is the greatly increased ease of use. Working with contact also tends to speed the learning curve by giving the process a more natural dental feel. In addition, as one becomes familiar with working with a dust stream, the potential for misdirecting the air flow is decreased. The future use of air abrasion for deep decay removal will make this the treatment of choice for the next millennium.

  11. Olefin metathesis in air.

    Science.gov (United States)

    Piola, Lorenzo; Nahra, Fady; Nolan, Steven P

    2015-01-01

    Since the discovery and now widespread use of olefin metathesis, the evolution of metathesis catalysts towards air stability has become an area of significant interest. In this fascinating area of study, beginning with early systems making use of high oxidation state early transition metal centers that required strict exclusion of water and air, advances have been made to render catalysts more stable and yet more functional group tolerant. This review summarizes the major developments concerning catalytic systems directed towards water and air tolerance.

  12. New capabilities in the process control and automisation of brown coal power plants for the enhancement of environmental benignity and efficiency. Development and use of the MODI expert system and modern control processes. Final report; Neue Faehigkeiten bei der Prozessfuehrung und Automatisierung von Braunkohlekraftwerken zur Steigerung der Umweltvertraeglichkeit und Effizienz. Entwicklung und Einsatz des Expertensystems MODI und Moderner Regelungsverfahren. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Ziegler, R.

    1996-04-26

    The present study deals with the development and use of an expert system for monitoring and diagnosing selected technological segments (MODI diagnosis system) and with the use of modern control processes in a 500 MW block of Boxberg brown coal power plant. The diagnosis system is examined with regard to knowledge acquisition, knowledge implementation, and knowledge documentation given characteristic disorders. The result of the research and development work is a knowledge-based system for process diagnosis which operates in real-time. The experience gained through the elaboration of the knowledge base for the water-steam cycle will serve as a basis for extending the diagnosis system to all segments of the power plant. After an overview of the state of the art the present report briefly explains the theoretical basics of process diagnosis. It then gives a detailed account of how the knowledge base develops. In effect this provides a comprehensive, instructive documentation of the knowledge base. (orig./GL) [Deutsch] Diese Dokumentation befasst sich mit der Entwicklung und dem Einsatz eines Expertensystems zur Ueberwachung und Diagnose ausgewaehlter technologischer Abschnitte (Diagnosesystem MODI) und mit dem Einsatz moderner Regelungsverfahren an einem 500 MW Braunkohlekraftwerksblock des Standortes Boxberg. Es werden dabei fuer das Diagnosesystem die Gebiete Wissenserfassung, Wissensimplementierung sowie Wissensdokumentation am Beispiel charakteristischer Stoerungen betrachtet. Ergebnis der Forschung und Entwicklung ist ein in Echtzeit arbeitendes wissensbasiertes System zur Prozessdiagnose. Auf die bei der Erstellung der Wissensbasis gewonnenen Erfahrungen im Wasser-Dampf-Kreislauf kann bei der Ausdehnung der Diagnose auf den gesamten Kraftwerksbereich aufgebaut werden. Nach einem Ueberblick ueber den Stand der Technik erfolgt eine kurze Erlaeuterung der theoretischen Grundlagen der Prozessdiagnose. Anschliessend wird detailliert der Vorgang der Entstehung der

  13. AIR RADIOACTIVITY MONITOR

    Science.gov (United States)

    Bradshaw, R.L.; Thomas, J.W.

    1961-04-11

    The monitor is designed to minimize undesirable background buildup. It consists of an elongated column containing peripheral electrodes in a central portion of the column, and conduits directing an axial flow of radioactively contaminated air through the center of the column and pure air through the annular portion of the column about the electrodes. (AEC)

  14. Air-Conditioning Mechanic.

    Science.gov (United States)

    Marine Corps Inst., Washington, DC.

    This student guide, one of a series of correspondence training courses designed to improve the job performance of members of the Marine Corps, deals with the skills needed by air conditioning mechanics. Addressed in the four chapters, or lessons, of the manual are the following topics: principles of air conditioning, refrigeration components as…

  15. The Air We Breathe

    Science.gov (United States)

    Davila, Dina

    2010-01-01

    Topics discussed include NASA mission to pioneer the future in space exploration, scientific discovery and aeronautics research; the role of Earth's atmosphere, atmospheric gases, layers of the Earth's atmosphere, ozone layer, air pollution, effects of air pollution on people, the Greenhouse Effect, and breathing on the International Space Station.

  16. Air/liquid collectors

    DEFF Research Database (Denmark)

    Jensen, Søren Østergaard; Olesen, Ole; Kristiansen, Finn Harken

    1997-01-01

    This report determine efficiency equations for combined air/liquid solar collectors by measurements on to different air/liquid collectors. Equations which contain all relevant informations on the solar collectors. A simulation program (Kviksol) has been modified in order to be able to handle...

  17. Bad Air For Children

    Science.gov (United States)

    Kane, Dorothy Noyes

    1976-01-01

    Children are especially sensitive to air pollution and consequences to them maybe of longer duration than to adults. The effects of low-level pollution on children are the concern of this article. The need for research on the threat of air pollution to childrens' health is emphasized. (BT)

  18. Air pollution and society

    OpenAIRE

    Brimblecombe P.

    2010-01-01

    Air pollution is as much a product of our society as it is one of chemistry and meteorology. Social variables such as gender, age, health status and poverty are often linked with our exposure to air pollutants. Pollution can also affect our behaviour, while regulations to improve the environment can often challenge of freedom.

  19. Over the air test

    DEFF Research Database (Denmark)

    2015-01-01

    [1] This invention relates to over-the-air testing of a device in an anechoic chamber. In particular, the invention is suitable for simulating both uplink and downlink over-the-air communication with a device under test even when the anechoic chamber has different numbers of uplink and downlink...

  20. Air Pollution, Teachers' Edition.

    Science.gov (United States)

    Lavaroni, Charles W.; O'Donnell, Patrick A.

    One of three in a series about pollution, this teacher's guide for a unit on air pollution is designed for use in junior high school grades. It offers suggestions for extending the information and activities contained in the textual material for students. Chapter 1 discusses the problem of air pollution and involves students in processes of…

  1. Air Pollution and Industry.

    Science.gov (United States)

    Ross, R. D., Ed.

    This book is an authoritative reference and practical guide designed to help the plant engineer identify and solve industrial air pollution problems in order to be able to meet current air pollution regulations. Prepared under the editorial supervision of an experienced chemical engineer, with each chapter contributed by an expert in his field,…

  2. Bearings Only Air-to-Air Ranging

    Science.gov (United States)

    1988-07-25

    sensor, observer and target parameters still remain. In order to reduce the number of cases to a manageable one, while preserving the geometric...perforance of variotu. ulro-air passive ranging tecnique has been examined as a fimn- tiam of uarget location andi motiom, observer motion. and length

  3. Restoran Buenos Aires = Restaurant Buenos Aires

    Index Scriptorium Estoniae

    2008-01-01

    Restorani Buenos Aires (Narva mnt. 5, Tallinn) sisekujundusest. Sisearhitektid: Janno Roos ja Andres Labi (Ruumilabor OÜ). Laudu eraldavad 400 vardasse aetud puukuuli. Sisearhitektidest, nende tähtsamad tööd. I-III korruse plaan, 12 värv. vaadet, fotod sisearhitektidest

  4. AIRE-Linux

    Science.gov (United States)

    Zhou, Jianfeng; Xu, Benda; Peng, Chuan; Yang, Yang; Huo, Zhuoxi

    2015-08-01

    AIRE-Linux is a dedicated Linux system for astronomers. Modern astronomy faces two big challenges: massive observed raw data which covers the whole electromagnetic spectrum, and overmuch professional data processing skill which exceeds personal or even a small team's abilities. AIRE-Linux, which is a specially designed Linux and will be distributed to users by Virtual Machine (VM) images in Open Virtualization Format (OVF), is to help astronomers confront the challenges. Most astronomical software packages, such as IRAF, MIDAS, CASA, Heasoft etc., will be integrated into AIRE-Linux. It is easy for astronomers to configure and customize the system and use what they just need. When incorporated into cloud computing platforms, AIRE-Linux will be able to handle data intensive and computing consuming tasks for astronomers. Currently, a Beta version of AIRE-Linux is ready for download and testing.

  5. Airing 'clean air' in Clean India Mission.

    Science.gov (United States)

    Banerjee, T; Kumar, M; Mall, R K; Singh, R S

    2016-12-30

    The submission explores the possibility of a policy revision for considering clean air quality in recently launched nationwide campaign, Clean India Mission (CIM). Despite of several efforts for improving availability of clean household energy and sanitation facilities, situation remain still depressing as almost half of global population lacks access to clean energy and proper sanitation. Globally, at least 2.5 billion people do not have access to basic sanitation facilities. There are also evidences of 7 million premature deaths by air pollution in year 2012. The situation is even more disastrous for India especially in rural areas. Although, India has reasonably progressed in developing sanitary facilities and disseminating clean fuel to its urban households, the situation in rural areas is still miserable and needs to be reviewed. Several policy interventions and campaigns were made to improve the scenario but outcomes were remarkably poor. Indian census revealed a mere 31% sanitation coverage (in 2011) compared to 22% in 2001 while 60% of population (700 million) still use solid biofuels and traditional cook stoves for household cooking. Further, last decade (2001-2011) witnessed the progress decelerating down with rural households without sanitation facilities increased by 8.3 million while minimum progress has been made in conversion of conventional to modern fuels. To revamp the sanitation coverage, an overambitious nationwide campaign CIM was initiated in 2014 and present submission explores the possibility of including 'clean air' considerations within it. The article draws evidence from literatures on scenarios of rural sanitation, energy practises, pollution induced mortality and climatic impacts of air pollution. This subsequently hypothesised with possible modification in available technologies, dissemination modes, financing and implementation for integration of CIM with 'clean air' so that access to both sanitation and clean household energy may be

  6. Location Problem of Air Materials Supply Center for Air Force

    Institute of Scientific and Technical Information of China (English)

    王涛; 何亚群; 陶学禹

    2002-01-01

    Based on the analysis of three influencing factors on the air material supply center location, the location model of air material supply center was established. By solving the model, the rational supply center of air materials was also determined.

  7. Air Baltic: Estonian Air on nurka surutud / Teele Tammeorg

    Index Scriptorium Estoniae

    Tammeorg, Teele

    2010-01-01

    Air Balticu asepresidendi Janis Vanagsi hinnangul on Estonian Air aastaid jätnud tähelepanuta oma peamised turismiturud ning on praegu halvas seisus. Air Baltic on endiselt huvitatud Estonian Airi ostust. Majandus- ja kommunikatsiooniminister Juhan Partsi seisukoht

  8. First status seminar `Druckflamm`. Development of a coal-fuelled combined cycle process with liquid ash separation. Conference report; Erstes Statusseminar `Druckflamm`. Entwicklung eines kohlegefeuerten Gas- und Dampfturbinenprozesses mit Fluessigascheabscheidung. Tagungsband

    Energy Technology Data Exchange (ETDEWEB)

    Hannes, K. [ed.

    1999-09-01

    werden kann. Dabei muss das Rauchgas soweit von Partikeln und materialschaedlichen Daempfen gereinigt werden, dass es gasturbinenvertraeglich wird. Nach Angaben der Turbinenhersteller bedeutet dies einen Partikelgehalt <3mg/m{sup 3} i.N. bei einem Partikeldurchmesser < 3 {mu}m und einem Alkaligehalt < 1 ppm. Zur praktischen Erprobung dieser Entwicklung wird in Dorsten auf dem Gelaende eines frueheren STEAG-Kraftwerkes eine Versuchsanlage gefahren. Mit ihr wollen die Betreiber den Gas-Dampfturbinenprozess, der mit Heizoel oder Gas Wirkungsgrade von z.Z. 57 % erreicht, auch fuer Kohle nutzbar machen. Die in Dorsten errichtete Versuchsanlage besitzt eine thermische Leistung von 1 MW und kann bis zu einem Druck von 20 bar betrieben werden. Ein Ueberblick ueber die bisher erzielten Ergebnisse und gewonnenen Erkenntnisse zu Einsatzkohle, Verbrennung und Rauchgasreinigung wird der schematischen Darstellung der Anlage folgend gegeben. Ueber Materialverhalten und Messtechnik wird gesondert berichtet. Als Brennstoff wurden Kohlen unterschiedlicher Zusammensetzung mit Schlackefliesspunkten zwischen ca. 1200 bis 1400 C eingesetzt. (orig.AKF)

  9. Strukturell-organisatorische Entwicklung und Etablierung eines interdisziplinären Trainingszentrums für klinisch-praktische Fertigkeiten [Structural and organizational development and establishment of an interdisciplinary Skills Lab

    Directory of Open Access Journals (Sweden)

    Dott, Wolfgang

    2010-02-01

    rztliche Handeln essentiell sind. Im Juli 2005 begann der Aufbau eines interdisziplinären Trainingszentrums an der medizinischen Fakultät der Rheinisch-Westfälischen Technischen Hochschule Aachen, genannt „AIXTRA“ (Aachener interdisziplinäres Trainingszentrum für medizinische Ausbildung. Sach- und Personalmittel zur strukturellen und methodischen Etablierung des sog. Skillslab wurden zunächst aus einem fakultätsinternen Förderprogramm für innovative Lehrkonzepte, im weiteren Verlauf zum überwiegenden Teil aus Studienbeiträgen zur Verfügung gestellt. Methodik: Im Vorfeld wurden die folgenden notwendigen Schritte eines Projektmanagements erarbeitet: Entwicklung eines methodischen Rahmenkonzeptes, Definition der inhaltlichen Ausrichtung und Auswahl der Fertigkeiten, Schaffung infrastruktureller Voraussetzungen (Räume, Unterrichtsmaterial, Personal, Konzeptionierung von „Pilot-Kursen“, Realisierung repräsentabler „Meilensteine“, Gewinnung weiterer potenter fakultätsinterner Partner für zukünftigen Ausbau, Implementierung Kursangebot in laufende Curricula, Evaluation der Einzel-Kurse und des Gesamtkonzeptes. Ergebnis: Die vorab festgelegten Teilschritte des Projektmanagements erwiesen sich als zielführend bei der Umsetzung des Projektes. Eine „Minimal“-Infrastruktur in Bezug auf räumliche und personelle Ressourcen wurde etabliert, das methodische Konzept umgesetzt. Im Sommersemester 2008 besuchten insgesamt 709 Teilnehmer in 133 fakultativen Kursen und ca. 900 Studierende in curricularen Veranstaltungen das Skillslab „AIXTRA“. Schlussfolgerung: Nach drei Jahren wird im interdisziplinären Trainingszentrum eine breite Palette von Kursen angeboten, in denen Studierende praktische Fertigkeiten erlernen, trainieren und optimieren können. Die bisher gewonnenen Erfahrungen in der Konzeptionierung und Organisation des Kursprogramms sind essentielle Grundlage für den weiteren strukturellen und methodisch-didaktischen Ausbau des Skillslab.

  10. Air Cleaning Technologies

    Science.gov (United States)

    2005-01-01

    Executive Summary Objective This health technology policy assessment will answer the following questions: When should in-room air cleaners be used? How effective are in-room air cleaners? Are in-room air cleaners that use combined HEPA and UVGI air cleaning technology more effective than those that use HEPA filtration alone? What is the Plasmacluster ion air purifier in the pandemic influenza preparation plan? The experience of severe acute respiratory syndrome (SARS) locally, nationally, and internationally underscored the importance of administrative, environmental, and personal protective infection control measures in health care facilities. In the aftermath of the SARS crisis, there was a need for a clearer understanding of Ontario’s capacity to manage suspected or confirmed cases of airborne infectious diseases. In so doing, the Walker Commission thought that more attention should be paid to the potential use of new technologies such as in-room air cleaning units. It recommended that the Medical Advisory Secretariat of the Ontario Ministry of Health and Long-Term Care evaluate the appropriate use and effectiveness of such new technologies. Accordingly, the Ontario Health Technology Advisory Committee asked the Medical Advisory Secretariat to review the literature on the effectiveness and utility of in-room air cleaners that use high-efficiency particle air (HEPA) filters and ultraviolet germicidal irradiation (UVGI) air cleaning technology. Additionally, the Ontario Health Technology Advisory Committee prioritized a request from the ministry’s Emergency Management Unit to investigate the possible role of the Plasmacluster ion air purifier manufactured by Sharp Electronics Corporation, in the pandemic influenza preparation plan. Clinical Need Airborne transmission of infectious diseases depends in part on the concentration of breathable infectious pathogens (germs) in room air. Infection control is achieved by a combination of administrative, engineering

  11. Emission Facilities - Air Emission Plants

    Data.gov (United States)

    NSGIC GIS Inventory (aka Ramona) — Represents the Primary Facility type Air Emission Plant (AEP) point features. Air Emissions Plant is a DEP primary facility type related to the Air Quality Program....

  12. Air Quality Management Process Cycle

    Science.gov (United States)

    Air quality management are activities a regulatory authority undertakes to protect human health and the environment from the harmful effects of air pollution. The process of managing air quality can be illustrated as a cycle of inter-related elements.

  13. Ambient Air Quality Data Inventory

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Office of Air and Radiation??s (OAR) Ambient Air Quality Data (Current) contains ambient air pollution data collected by EPA, other federal agencies, as well as...

  14. Ambient Air Quality Data Inventory

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Office of Air and Radiation's (OAR) Ambient Air Quality Data (Current) contains ambient air pollution data collected by EPA, other federal agencies, as well as...

  15. Olefin metathesis in air

    Directory of Open Access Journals (Sweden)

    Lorenzo Piola

    2015-10-01

    Full Text Available Since the discovery and now widespread use of olefin metathesis, the evolution of metathesis catalysts towards air stability has become an area of significant interest. In this fascinating area of study, beginning with early systems making use of high oxidation state early transition metal centers that required strict exclusion of water and air, advances have been made to render catalysts more stable and yet more functional group tolerant. This review summarizes the major developments concerning catalytic systems directed towards water and air tolerance.

  16. Air/Water Purification

    Science.gov (United States)

    1992-01-01

    After 18 years of research into air/water pollution at Stennis Space Center, Dr. B. C. Wolverton formed his own company, Wolverton Environmental Services, Inc., to provide technology and consultation in air and water treatment. Common houseplants are used to absorb potentially harmful materials from bathrooms and kitchens. The plants are fertilized, air is purified, and wastewater is converted to clean water. More than 100 U.S. communities have adopted Wolverton's earlier water hyacinth and artificial marsh applications. Catfish farmers are currently evaluating the artificial marsh technology as a purification system.

  17. Olefin metathesis in air

    Science.gov (United States)

    Piola, Lorenzo; Nahra, Fady

    2015-01-01

    Summary Since the discovery and now widespread use of olefin metathesis, the evolution of metathesis catalysts towards air stability has become an area of significant interest. In this fascinating area of study, beginning with early systems making use of high oxidation state early transition metal centers that required strict exclusion of water and air, advances have been made to render catalysts more stable and yet more functional group tolerant. This review summarizes the major developments concerning catalytic systems directed towards water and air tolerance. PMID:26664625

  18. Clean Air and Water

    Centers for Disease Control (CDC) Podcasts

    2007-04-10

    The air we breathe and the water we drink are both vital components of our health. Nevertheless, bacteria, pollutants, and other contaminates can alter life-giving air and water into health-threatening hazards. Learn about how scientists at the Centers for Disease Control and Prevention work to protect the public from air and water-related health risks.  Created: 4/10/2007 by CDC National Center for Environmental Health.   Date Released: 4/13/2007.

  19. Air Quality Monitoring Programme

    DEFF Research Database (Denmark)

    Kemp, K.; Palmgren, F.

    The air quality in Danish cities has been monitored continuously since 1982 within the Danish Air Quality (LMP) network. The aim has been to follow the concentration levels of toxic pollutants in the urban atmosphere and to provide the necessary knowledge to assess the trends, to perform source...... apportionment, and to evaluate the chemical reactions and the dispersion of the pollutants in the atmosphere. In 2002 the air quality was measured in four Danish cities and at two background sites. NO2 and PM10 were at several stations found in concentrations above the new EU limit values, which the Member...

  20. Mid-air Acrobatics

    Institute of Scientific and Technical Information of China (English)

    LlU FENG'AN

    2011-01-01

    On September 1 two new aerobatic demonstration teams,theSky Wing and the Red Falcon,debuted at an air show held in Changchun,capital of northeast China's Jilin Province.The show was staged at a ceremony held by the Aviation University of the People's Liberation Army (PLA) Air Force.Also performing at the show was the 50-year-old Bayi aerobatic demonstration team.The teams demonstrated their superlative flying skills,which showcase the quality of the air force's rigorous pilot training.

  1. Development of bio-active permeable in-situ barriers for plume remediation. Subproject 1: long term-behaviour of contaminant release from NAPL sources and contaminant retardation in sorbing barriers. Subproject 2: biological pollutant degradation. Final report; VEGAS - Entwicklung bioaktiver Sorptionsbarrieren zur in-situ Abstromsanierung. Teilprojekt 1: Langzeit-Entwicklung der Schadstoffemission aus Schadensherden und Schadstoff-Retention in Sorptionsbarrieren. Teilprojekt 2: Mikrobiologischer Schadstoffabbau in Sorptionsbarrieren und Schadensherden. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Teutsch, G.; Grathwohl, P.; Liedl, R.; Eberhardt, C.; Finkel, M.; Kuehn, W.; Stieber, M.; Linke, C.

    2001-09-15

    The objective of this project was to contribute to some of the key issues concerning the development of improved contaminant plume management technologies by means of a large scale experiment with real tar oil sources within the VEGAS research facility at the University of Stuttgart. The investigations were focused on contaminant release, microbiological degradation, the use of surfactants and contaminant transport within the plume. Among others, the most important results are: - None of the 6 investigated surfactants meets the criteria for an installation of an in-situ permeable sorptive barrier. - PAH- and BTEX degradation was significantly improved by H{sub 2}O{sub 2} (also in combination with nitrate). Under anaerobic conditions no PAH degradation was observed. For BTEX, only ethylbenzene was degraded under denitrifying conditions. - Contaminant release from a NAPL pool and the development of concentration profiles could be directly measured: pore diffusion and transverse dispersion govern the release process. - Phenanthrene release rates could be enhanced by a factor of 20 with Lutensol A8 at moderate concentration ({proportional_to}1 g/l) guaranteeing that only minor mobilisation effects have occurred. - Due to the fact that degradation of surfactants results in a depletion of electron acceptors the pollutant degradation was impaired and increased contaminant flux could not be eliminated. Therefore, surfactant biodegradability is a key factor for in-situ surfactant application. (orig.) [German] Ziel dieses Verbundforschungsprojekts war es, im Rahmen eines Grossversuchs im Rinnenbehaelter der VEGAS-Versuchshalle an der Universitaet Stuttgart Untersuchungen mit realen Teeroel-Schadensherden zu einigen der grundlegenden Fragestellungen in Bezug auf 'Plume-management'-Technologien durchzufuehren und so wichtige Grundlagenkenntnisse fuer die Entwicklung neuer bzw. verbesserter Verfahren zu liefern. Die Schadstofffreisetzung, die Moeglichkeiten eines

  2. Radioactive air sampling methods

    CERN Document Server

    Maiello, Mark L

    2010-01-01

    Although the field of radioactive air sampling has matured and evolved over decades, it has lacked a single resource that assimilates technical and background information on its many facets. Edited by experts and with contributions from top practitioners and researchers, Radioactive Air Sampling Methods provides authoritative guidance on measuring airborne radioactivity from industrial, research, and nuclear power operations, as well as naturally occuring radioactivity in the environment. Designed for industrial hygienists, air quality experts, and heath physicists, the book delves into the applied research advancing and transforming practice with improvements to measurement equipment, human dose modeling of inhaled radioactivity, and radiation safety regulations. To present a wide picture of the field, it covers the international and national standards that guide the quality of air sampling measurements and equipment. It discusses emergency response issues, including radioactive fallout and the assets used ...

  3. Natural Air Purifier

    Science.gov (United States)

    1993-01-01

    NASA environmental research has led to a plant-based air filtering system. Dr. B.C. Wolverton, a former NASA engineer who developed a biological filtering system for space life support, served as a consultant to Terra Firma Environmental. The company is marketing the BioFilter, a natural air purifier that combines activated carbon and other filter media with living plants and microorganisms. The filter material traps and holds indoor pollutants; plant roots and microorganisms then convert the pollutants into food for the plant. Most non-flowering house plants will work. After pollutants have been removed, the cleansed air is returned to the room through slits in the planter. Terra Firma is currently developing a filter that will also disinfect the air.

  4. Advanced air distribution

    DEFF Research Database (Denmark)

    Melikov, Arsen Krikor

    2011-01-01

    The aim of total volume air distribution (TVAD) involves achieving uniform temperature and velocity in the occupied zone and environment designed for an average occupant. The supply of large amounts of clean and cool air are needed to maintain temperature and pollution concentration at acceptable...... levels in the entire space, leading to increased energy consumption and the use of large and costly HVAC and duct systems. The performance of desk installed PV combined with background TVAD used for room temperature control has been studied in an office building located in a hot and humid climate....... Ventilation in hospitals is essential to decrease the risk of airborne cross-infection. At present, mixing air distribution at a minimum of 12 ach is used in infection wards. Advanced air distribution has the potential to aid in achieving healthy, comfortable and productive indoor environments at levels...

  5. Regional Air Quality Data

    Data.gov (United States)

    U.S. Environmental Protection Agency — This asset provides data on regional air quality, including trace level SO2, nitric acid, ozone, carbon monoxide, and NOy; and particulate sulfate, nitrate, and...

  6. Temporal solitons in air

    Science.gov (United States)

    Voronin, A. A.; Zheltikov, A. M.

    2017-02-01

    Analysis of the group-velocity dispersion (GVD) of atmospheric air with a model that includes the entire manifold of infrared transitions in air reveals a remarkably broad and continuous anomalous-GVD region in the high-frequency wing of the carbon dioxide rovibrational band from approximately 3.5 to 4.2 μm where atmospheric air is still highly transparent and where high-peak-power sources of ultrashort midinfrared pulses are available. Within this range, anomalous dispersion acting jointly with optical nonlinearity of atmospheric air is shown to give rise to a unique three-dimensional dynamics with well-resolved soliton features in the time domain, enabling a highly efficient whole-beam soliton self-compression of such pulses to few-cycle pulse widths.

  7. Air Data Calibration Facility

    Data.gov (United States)

    Federal Laboratory Consortium — This facility is for low altitude subsonic altimeter system calibrations of air vehicles. Mission is a direct support of the AFFTC mission. Postflight data merge is...

  8. Investigating Air Pollution

    Science.gov (United States)

    Carter, Edward J.

    1977-01-01

    Describes an experiment using live plants and cigarette smoke to demonstrate the effects of air pollution on a living organism. Procedures include growth of the test plants in glass bottles, and construction and operation of smoking machine. (CS)

  9. Robert M. Solow (*1924) : Wachstumstheorie und Entwicklung

    OpenAIRE

    Gundlach, Erich

    2002-01-01

    Robert Solow postulierte 1956 in einem bahnbrechenden Aufsatz, dass technischer Fortschritt die einzig mögliche Quelle für langfristiges Wirtschaftswachstum sei. Im folgenden Jahr konnte er nachweisen, dass sich das Wirtschaftswachstum der USA in der ersten Hälfte des zwanzigsten Jahrhunderts in der Tat fast vollständig mit technischem Fortschritt erklären ließ. Diese beiden Arbeiten sind inzwischen zu Klassikern der makroökonomischen Analyse geworden: Jeder Ökonom kennt das Solow-Modell und ...

  10. Legitimation allein durch Entwicklung? : Das Beispiel Ruanda

    OpenAIRE

    Stroh, Alexander

    2007-01-01

    "In Ruanda soll 2008 zum zweiten Mal nach dem Genozid (1994) ein Teil des Parlaments gewählt werden. Eine Debatte um die Bedeutung der Qualität dieser Wahlen für die weitere Entwicklungszusammenarbeit ist noch nicht erkennbar. Obgleich sich global ein allgemeiner Zusammenhang zwischen Demokratie und Entwicklungszuwendungen etabliert hat, wird die autokratische Herrschaft in Ruanda von Geberseite akzeptiert. Das Land erhält gegenwärtig so viel Entwicklungshilfe wie nie zuvor in Friedenszeiten....

  11. Entwicklung des Emirates Qatar : Strategien - Probleme - Erfolge

    OpenAIRE

    Baldus, Christoph

    2010-01-01

    Qatar boomt. Da es hierzu keine ganzheitlichen Forschungsarbeiten gibt, werden in dieser Arbeit die neuesten Entwicklungen und Planungen mit hoher Aktualität und Praxisrelevanz erstmals erfasst und analysiert. Der Autor führt Informationssplitter von internationalen Organisationen und eigene Recherchen in ein ganzheitliches Bild zusammen. Qatar ist sich bewusst, dass Wachstum endlich sein kann. Welche Möglichkeiten hat das kleine Qatar von der Globalisierung zu profitieren und für sich Vortei...

  12. Entwicklung umweltverträglicher Schmierstoffe

    Science.gov (United States)

    Murrenhoff, Hubertus

    Die wichtigste Aufgabe eines Schmierstoffes ist es, die Reibung zwischen beweglichen Bauteilen und somit deren Verschleiß zu verringern. Die dadurch mögliche Einsparung von Energie ist gerade in der heutigen Zeit, in der Energie und Rohstoffe zunehmend als limitierende Ressourcen angesehen werden, von großer Bedeutung. Gleichzeitig werden Umweltaspekte wie Ökotoxizität und biologische Abbaubarkeit zunehmend wichtiger.

  13. Entwicklung eines Gasmoderators f\\"ur Positronen

    CERN Document Server

    Löwe, Benjamin

    2016-01-01

    (Translated Title: Development of a positron gas moderator) In this work a positron moderator that is based on inelastic positron scattering in nitrogen gas has been developed and set-up. A positron beam enters a gas cell through a small aperture. In the cell the positrons lose kinetic energy through collisions with the nitrogen molecules. By means of an electric field the positrons are then focused towards an exit where their kinetic energy is analysed. During measurements at the NEPOMUC beam moderated positrons could be observed. ----- Im Rahmen dieser Diplomarbeit wurde das Konzept eines Moderators f\\"ur Positronen untersucht, welches auf der Abbremsung und dem Drift von Positronen in gasf\\"ormigem Stickstoff beruht. Dazu wurde ein Versuchsaufbau konstruiert, aufgebaut und in Betrieb genommen. Ein Positronenstrahl wird durch eine kleine Blende in eine Gaszelle eingekoppelt, dort durch St\\"o{\\ss}e mit den Gasmolek\\"ulen abgebremst, durch ein elektrisches Feld auf den Ausgang fokussiert und dahinter analysie...

  14. Entstehung und Entwicklung der Spendersamenbehandlung in Deutschland

    Directory of Open Access Journals (Sweden)

    Katzorke Th

    2008-01-01

    Full Text Available Seit der ersten dokumentierten instrumentellen Spendersamenübertragung (Philadelphia 1884 bei männlicher Zeugungsunfähigkeit ist diese Behandlungsmethode Gegenstand äußerst kontrovers geführter Diskussionen: ethische, moralische, juristische, religiöse und viele andere Bereiche werden tangiert. Trotzdem wird die Samenspende heute als eine allgemein akzeptierte, wissenschaftlich begründete und zulässige Therapieform in sämtlichen Industrieländern betrachtet. Es gibt bisher keinen Anhalt für eine Einschränkung der Lebensqualität der späteren Eltern und der so gezeugten Kinder. Lediglich die Praxis der Anonymisierung ist ungeklärt. Konkretisiert werden muss z. B. besonders das deutsche Recht im Hinblick auf das Erbrecht. Weiterhin müssten im Zuge der Revision des bestehenden Embryonenschutzgesetzes oder durch Erlass eines neuen Fortpflanzungsmedizingesetzes den veränderten gesellschaftlichen Entwicklungen Rechnung getragen werden. Hier muss von der Gesellschaft besonders zu der Frage der Behandlung von ledigen Frauen und gleichgeschlechtlichen Paaren Stellung genommen werden.

  15. Internet, Kapitalismus und periphere Entwicklung im Waldviertel

    Directory of Open Access Journals (Sweden)

    Christian Fuchs

    2015-03-01

    Full Text Available Das Waldviertel ist eine strukturschwache Region im Norden Österreichs, die eine innere Peripherie und innere Kolonie des österreichischen und europäischen Kapitalismus darstellt. Dieser Artikel analysiert die politische Ökonomie des Internets im Waldviertel. Das Waldviertel ist konfrontiert mit hohen Ausbeutungsraten im Rahmen einer imperialistischen Arbeitsteilung, Werttransfer, ungleichem Tausch, Niedriglöhnen, der Abwanderung der Textilindustrie, hoher Arbeitslosigkeit, Landflucht, dem Abbau öffentlicher Infrastruktur und Bevölkerungsrückgang. Die Analyse verdeutlicht, dass die Situation des Waldviertels als innere Peripherie der kapitalistischen Zentren die Kommunikationsverhältnisse prägt. Der Zugang zu Computern, dem Internet und Breitband ist im Waldviertel schlechter als in anderen Regionen, die Internet- und Mobiltelefonverbindungsgeschwindigkeit ist tendenziell langsamer und die Region ist eher unattraktiv für WissensarbeiterInnen. Es gibt im Waldviertel auch Ansätze einer Alternativökonomie, die den Imperialismus infrage stellen. Im Bereich der Informationsökonomie bestehen Potenziale für die Gründung von sozialistischen Kooperativen im Bereich Hardware, Software und soziale Medien, die die kapitalistische Informationsgesellschaft infrage stellen und für Alternativen kämpfen.

  16. Kultur und Wirtschaftliche Entwicklung in China

    NARCIS (Netherlands)

    B. Krug (Barbara)

    2001-01-01

    textabstractDie ?konomie ist so kultur- wie geschichtslos. Das ist ihre St?rke, vermag sie doch deshalb Gemeinsamkeiten auch dort zu entdecken, wo Historiker, Anthropologen, und nicht zuletzt die Bewohner eines Landes, Einzigartigkeit beanspruchen. Es ist auch ihre Schw?che, weil nur das sein kann,

  17. Entwicklung des schweizerischen Arbeitsmarkts 1992 bis 2008

    OpenAIRE

    Roland Aeppli

    2009-01-01

    Die kräftige Zunahme der Beschäftigung in den letzten drei Jahren war nicht breit abgestützt. Das Beschäftigungswachstum war massgeblich durch einen ausserordentlich starken Anstieg in einzelnen Branchen beeinflusst, die – mit Ausnahme «moderner» Dienstleistungen – zum staatlichen oder staatsnahen Sektor gehören. Dagegen nahm die Beschäftigung im sekundären Sektor und in den eher «traditionellen» (privaten) Dienstleistungsbranchen längerfristig gesehen ab. Vom Beschäftigungszuwachs profitiert...

  18. Indoor Air Pollution

    OpenAIRE

    Smith, Kirk R.

    2003-01-01

    Outdoor air pollution in developing-country cities is difficult to overlook. Indoor air pollution caused by burning such traditional fuels as wood, crop residues, and dung is less evident, yet it is responsible for a significant part of country and global disease burdens. The main groups affected are poor women and children in rural areas and urban slums as they go about their daily activi...

  19. Air Superiority Fighter Characteristics.

    Science.gov (United States)

    1998-06-05

    many a dispute could have been deflated into a single paragraph if the disputants had just dared to define their terms.7 Aristotle ...meaningful. This section will expand on some key ideology concepts. The phrase "air superiority fighter" may bring to mind visions of fighter... biographies are useful in garnering airpower advocate theories as well as identifying key characteristics. Air campaign results, starting with World

  20. Nuclear air cushion vehicles.

    Science.gov (United States)

    Anderson, J. L.

    1973-01-01

    This paper serves several functions. It identifies the 'state-of-the-art' of the still-conceptual nuclear air cushion vehicle, particularly the nuclear powerplant. Using mission studies and cost estimates, the report describes some of the advantages of nuclear power for large air cushion vehicles. The paper also summarizes the technology studies on mobile nuclear powerplants and conceptual ACV systems/missions studies that have been performed at NASA Lewis Research Center.

  1. INDOOR AIR QUALITY ANALYSIS

    OpenAIRE

    Wang, Xin

    2010-01-01

    With the development of modern architecture, one of the building's interior decoration, furnishings, appliances and equipment have become increasingly demanding, making construction of the indoor environment of increasing pollution, increasing pollution, indoor environmental pollution hazards to human is also a growing the greater. This thesis summarizes the major indoor air pollution sources and major pollutants. Indoor air pollutants are formaldehyde, radon, ammonia, total volatile org...

  2. Multipollutant air quality management.

    Science.gov (United States)

    Hidy, George M; Pennell, William T

    2010-06-01

    On the basis of a recent NARSTO assessment, this review discusses the factors involved in the implementation of a risk- and results-based multipollutant air quality management strategy applicable to North America. Such a strategy could evolve from current single-pollutant regulatory practices using a series of steps that would seek to minimize risk of exposure for humans and ecosystems while providing for a quantitative evaluation of the effectiveness of the management process. The tools needed to support multipollutant air quality management are summarized. They include application of a formal risk analysis, accounting for atmospheric processes, ambient measurements, emissions characterization, air quality modeling of emissions to ambient concentrations, and characterization of human and ecological responses to ambient pollutant exposure. The new management strategy would expand the current practice of accountability that relates emission reductions and attainment of air quality derived from air quality criteria and standards. Conceptually, achievement of accountability would establish goals optimizing risk reduction associated with pollution management. This expanded approach takes into account the sequence of processes from emissions reduction to resulting changes in ambient concentration. Using ambient concentration as a proxy for exposure, the resulting improvement in human and ecosystem health is estimated. The degree to which this chain of processes and effects can be achieved in current practice is examined in a multipollutant context exemplified by oxidants, as indicated by ozone, particulate matter, and some hazardous air pollutants. Achievement of a multipollutant management strategy will mostly depend on improving knowledge about human and ecosystem response to pollutant exposure.

  3. Fluidized Bed Air-to-Air Heat Pump Evaporator Evaluation.

    Science.gov (United States)

    1983-07-01

    Frost formation of air-to-air heat pump evaporator surfaces reduces unit efficiency and restricts application. The use of a fluidized bed heat...exchanger as an air-to- heat pump evaporator was investigated to determine if frost accumulation could be eliminated. Experimental investigations were...evaluated, with no practical solution being developed. The use of a fluidized bed heat exchanger for air-to-air heat pump evaporators was determined not feasible. (Author)

  4. Selection of Air Terminal Device

    DEFF Research Database (Denmark)

    Nielsen, Peter V.

    This paper discusses the selection of the air terminal device for the experiments and numerical prediction in the International Energy Agency Annex 20 work: Air Flow Pattern within Buildings,......This paper discusses the selection of the air terminal device for the experiments and numerical prediction in the International Energy Agency Annex 20 work: Air Flow Pattern within Buildings,...

  5. Computers in Air Defence

    Directory of Open Access Journals (Sweden)

    P. V.S. Rao

    1987-10-01

    Full Text Available With man's mastery over the third dimension - the near atmosphere and space- it has become increasingly necessary to protect oneself not merely from attacks from land and the sea but, more importantly, from attacks from the air. This was recognised even during the World War II and a rudimentary air defence capability was sought to be established; by the manul (visual surveillance and the anti-aircraft guns. The advent of radar signified a major advance in air defence technology and techniques. Rather than depend on visual observation and the hazards and limitations thereof, it became possible with radar to detect the presence of flying objects at much great distances. The PPI display of a conventional air-surveillance radar permits an operator to scan the sky for several hundreds of kilometers all around. Early radar-based air defence systems were dependent on human observation and decision making for detecting targets, identifying them, deciding on interception strategy and for recovering the interceptor after completion of his mission. This was feasible because, with a radar of between 200 to 400 kilometers and aircraft speeds in the range of 500 kilometers per hour, upto 30 minutes warning was available before the target was overhead.

  6. Urban Air Pollution in India

    OpenAIRE

    Narain, Urvashi

    2008-01-01

    This article describes the main efforts undertaken to stem the growth of air pollution in Indian cities. We begin by examining trends in air quality across the country. This is followed by a description of the legal and institutional framework and policies for controlling air pollution in India. Next we report on efforts to improve air quality in Delhi. We conclude by describing recent actions to control air pollution in cities other than Delhi.

  7. Fundamentals of combustion research. Final report 2000; Grundlagen der Verbrennungsforschung. Abschlussbericht 2000

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    All ten projects were aimed at modelling and validation of practically relevant natural gas flames. Modelling comprises the use,l development and enhancement of advanced combustion and turbulence models, e.g. PDF models or higher order Reynolds stress models. Validation uses modern laser diagnostics, e.g. spontaneous Raman scattering, LIF spectroscopy, and LDA. The practical applicability is ensured by a 150 kW flame whose characteristics can be extrapolated to industrial-scale plants. For this, four identical experiments were set up in the TECFLAM institutes of Stuttgart, Karlsruhe, Heidelberg, and Darmstadt. [German] Gemeinsames Projektziel der vorliegenden zehn Vorhaben ist die Modellentwicklung und Validierung anwendungsnaher Erdgasflammen. Unter Modellentwicklung ist dabei die Nutzung, Entwicklung und Weiterentwicklung fortschrittlicher Verbrennungs- und Turbulenzmodelle wie PDF-Modelle oder Reynolds-Stress-Modelle hoeherer Ordnung zu verstehen. Validierung wird durchgefuehrt mittels moderner Laserdiagnostik-Verfahren, wie der spontanen Raman-Streuung, der LIF-Spektroskopie sowie LDA-Verfahren. Die Anwendungsnaehe wird sichergestellt durch eine Flamme mit 150 kW Leistung, deren Verhalten auf grosstechnische Anlagen extrapolierbar ist. Um dieses ehrgeizige Ziel zu erreichen, wurden vier identische Versuchsaufbauten in den TECFLAM-Instituten in Stuttgart, Karlsruhe, Heidelberg und Darmstadt errichtet. (orig.)

  8. AirPort Extreme

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    AirPort Extreme是基于IEEE802.11g无线通讯协议的54Mbps的无线路由机站,它提供了比802.11b标准几乎快5倍以上的连接速率。AirPort Extreme基站可以同时为50台Mac和PC机用户服务。它支持从无线打印至带有USB接口或以太网接口的打印机,支持无线桥接技术,并同时提供了一整套强大的管理工具。除此之外,AirPort Extreme基站还配有一个内建防火墙,

  9. Urban Air Pollution Problems

    Energy Technology Data Exchange (ETDEWEB)

    Sivertsen, B.

    1995-09-01

    This document focuses on the specific problems of urban air pollution related to emissions, urban climate, meteorology, smog potential, specific locations, air pollution measurements and trends. Examples are given with cases from European cities in particular. The north south differences, coastal and inland problems and data from various parts of Europe are presented. Global trends and results from the UNEP programme are used to illustrate the magnitude of the problem. Special emphasis is placed on the impact of different sources and their importance in selected cities. Different types of atmospheric dispersion models, their development and use, is outlined. The importance of local and regional meteorological data for explanation purposes and for estimating and forecasting urban air quality is presented. Finally, monitoring programmes, mapping, impact assessment and optimum abatement strategy planning are illustrated with examples from different areas in the world. 9 refs., 56 figs., 1 table

  10. Air the excellent canopy

    CERN Document Server

    Fahy, F

    2013-01-01

    We take it for granted, but without it we perish and if we continue to abuse it, it may kill us in the end. This fascinating text provides an understanding and appreciation of the role that air plays in our environment and its importance in relation to human life and technology. Aimed at those who are scientifically curious but who have no specialist training, it contains no mathematical equations and relies upon the qualitative descriptions and analogies to explain the more technical parts of the text together with simple home experiments to illustrate a range of air-based phenomena. Liberall

  11. Air movement - good or bad?

    DEFF Research Database (Denmark)

    Toftum, Jørn

    2004-01-01

    Air movement - good or bad? The question can only be answered by those who are exposed when they are exposed. Human perception of air movement depends on environmental factors including air velocity, air velocity fluctuations, air temperature, and personal factors such as overall thermal sensation...... and activity level. Even for the same individual, sensitivity to air movement may change from day to day as a result of e.g. different levels of fatigue. Based on existing literature, the current paper summarizes factors influencing the human perception of air movement and attempts to specify in general terms...... influences the subjective perception of air movement. With occupants feeling warmer than neutral, at temperatures above 23oC or at raised activity levels, humans generally do not feel draught at air velocities typical for indoor environments (up to around 0.4 m/s). In the higher temperature range, very high...

  12. Russia air management program

    Energy Technology Data Exchange (ETDEWEB)

    Pace, T.G. [U.S. Environmental Protection Agency, NC (United States); Markin, S. [Ministry of Environmental Protection and Natural Resources, Moscow (Sweden); Kosenkova, S.V. [Volgograd Environmental Services Administration, Volgograd (Russian Federation)

    1995-12-31

    The Russia Air Management Program is in the second year of a four-year cooperative program between the Russian Ministry of Environmental Protection and Natural Resources (MEPNR) and the U.S. Environmental Protection Agency (EPA) to improve national institutions, policies, and practices for air quality management in Russia. This program is part of the Environmental Policy and Technology project being conducted by the U.S. Agency for International Development. The Russia Air Management Program will pilot the application of potential air program improvements in the important industrial City of Volgograd which will enable the development, practical demonstration and evaluation of alternative approaches for improving AQM policies and practices in Russia. Volgograd has a progressive and environmentally enlightened local government, a diverse industrial base and a relatively healthy economy. It is located south of Moscow on the Volga River and was proposed by the Ministry of Environmental Protection and Natural Resources. It was selected after a site visit and a series of discussions with the Ministry, Volgograd officials, the World Bank and the EPA. Following the pilot, RAMP will work to facilitate implementation of selected parts of the pilot in other areas of Russia using training, technology transfer, and public awareness. (author)

  13. Air Structures: Inflatable Alternatives

    Science.gov (United States)

    Valerio, Joseph M.; And Others

    1973-01-01

    Describes and evaluates several avant garde'' examples of air structures. Included are a soft'' child's playpen, a pneudome that employs a water ballast for anchoring, a one-acre enclosed campus, an instant city'' constructed for an industrial design conference, and the Fuji Pavilion, at Expo '70 in Osaka, Japan, that was large enough to cover…

  14. Mid-air Acrobatics

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    Two new aerobatic demonstration teams take to the skies On September 1,two new aerobatic demonstration teams,the Sky Wing and the Red Falcon,debuted at an air show held in Changchun,capital of northeast China’s Jilin Province.

  15. Hexane Air Combustion

    CERN Document Server

    Boettcher, Philipp A; Shepherd, Joseph E

    2010-01-01

    Hot surface ignition and subsequent flame propagation of premixed n-hexane air mixtures are shown in this fluid dynamics video. High speed schlieren photography revealed 3 distinct behaviors of ignition and propagation as a function of mixture composition and initial pressure.

  16. Images in the Air

    Science.gov (United States)

    Riveros, H. G.; Rosenberger, Franz

    2012-01-01

    This article discusses two "magic tricks" in terms of underlying optical principles. The first trick is new and produces a "ghost" in the air, and the second is the classical real image produced with two parabolic mirrors. (Contains 2 figure and 6 photos.)

  17. Air Blast Calculations

    Science.gov (United States)

    2013-07-01

    gauges at this point are still inside the explosive fireball (where the pressure time histories are dramatically influenced by the propagating...outside of the explosive fireball (since no evidence of an air-product interface is detected in any of the pressure time histories at this point

  18. Learning AirWatch

    CERN Document Server

    Dunkerley, Mark

    2015-01-01

    If you are a technical professional who wants to dive deeper into the functionality offered by AirWatch or manage the solution, then this book will help you choose the best set of configuration, device management, and monitoring options that you can use to effectively manage your EMM implementation.

  19. Tribal Air Quality Monitoring.

    Science.gov (United States)

    Wall, Dennis

    2001-01-01

    The Institute for Tribal Environmental Professionals (ITEP) (Flagstaff, Arizona) provides training and support for tribal professionals in the technical job skills needed for air quality monitoring and other environmental management tasks. ITEP also arranges internships, job placements, and hands-on training opportunities and supports an…

  20. Indoor Air Quality

    DEFF Research Database (Denmark)

    Selman, Ayser Dawod; Heiselberg, Per

    Overall purpose of the research is to provide an overview of the relevance and importance of various defined Indoor Air Quality (IAQ) parameters in a European perspective. Based on the report it should be possible to prioritize which countries to target for further activities as well as it should...

  1. Air Distribution in Rooms

    DEFF Research Database (Denmark)

    Nielsen, Peter V.

    The research on air distribution in rooms is often done as full-size investigations, scale-model investigations or by Computational Fluid Dynamics (CFD). New activities have taken place within all three areas and this paper draws comparisons between the different methods. The outcome of the l...

  2. Comparing toxic air pollutant programs

    Energy Technology Data Exchange (ETDEWEB)

    Hawkins, S.C. [ECKENFELDER Inc., Greenville, SC (United States)

    1997-05-01

    This article compares state and federal toxic air pollutant programs. The Clean Air Act Ammendments created a program for the control of Hazardous Air Pollutants based on the establishment of control technology standards. State toxic programs can be classified into two categories: control technology-based and ambient concentration-based. Many states have opened to implement the MACT standards while enforcing their own state air toxics programs. Specific topics discussed include the following: the Federal air toxics program; existing state regulations; New Jersey Air Toxic Program; New York Toxics program.

  3. Molecular Air Data Clear Air Turbulence Sensor: MADCAT Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Clear air turbulence (CAT), often referred to as "air pockets," is attributed to Kelvin-Helmholtz instabilities at altitudes generally above 18,000ft, often in the...

  4. Nitrogen fluorescence in air for observing extensive air showers

    CERN Document Server

    Keilhauer, B; Fraga, M; Matthews, J; Sakaki, N; Tameda, Y; Tsunesada, Y; Ulrich, A

    2012-01-01

    Extensive air showers initiate the fluorescence emissions from nitrogen molecules in air. The UV-light is emitted isotropically and can be used for observing the longitudinal development of extensive air showers in the atmosphere over tenth of kilometers. This measurement technique is well-established since it is exploited for many decades by several cosmic ray experiments. However, a fundamental aspect of the air shower analyses is the description of the fluorescence emission in dependence on varying atmospheric conditions. Different fluorescence yields affect directly the energy scaling of air shower reconstruction. In order to explore the various details of the nitrogen fluorescence emission in air, a few experimental groups have been performing dedicated measurements over the last decade. Most of the measurements are now finished. These experimental groups have been discussing their techniques and results in a series of \\emph{Air Fluorescence Workshops} commenced in 2002. At the 8$^{\\rm{th}}$ Air Fluoresc...

  5. Molecular Air Data Clear Air Turbulence Sensor: MADCAT Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Clear air turbulence (CAT), often referred to as "air pockets," is attributed to Kelvin-Helmholtz instabilities at altitudes usually above 18,000ft, often without...

  6. Air-Coupled Vibrometry

    Science.gov (United States)

    Döring, D.; Solodov, I.; Busse, G.

    Sound and ultrasound in air are the products of a multitude of different processes and thus can be favorable or undesirable phenomena. Development of experimental tools for non-invasive measurements and imaging of airborne sound fields is of importance for linear and nonlinear nondestructive material testing as well as noise control in industrial or civil engineering applications. One possible solution is based on acousto-optic interaction, like light diffraction imaging. The diffraction approach usually requires a sophisticated setup with fine optical alignment barely applicable in industrial environment. This paper focuses on the application of the robust experimental tool of scanning laser vibrometry, which utilizes commercial off-the-shelf equipment. The imaging technique of air-coupled vibrometry (ACV) is based on the modulation of the optical path length by the acoustic pressure of the sound wave. The theoretical considerations focus on the analysis of acousto-optical phase modulation. The sensitivity of the ACV in detecting vibration velocity was estimated as ~1 mm/s. The ACV applications to imaging of linear airborne fields are demonstrated for leaky wave propagation and measurements of ultrasonic air-coupled transducers. For higher-intensity ultrasound, the classical nonlinear effect of the second harmonic generation was measured in air. Another nonlinear application includes a direct observation of the nonlinear air-coupled emission (NACE) from the damaged areas in solid materials. The source of the NACE is shown to be strongly localized around the damage and proposed as a nonlinear "tag" to discern and image the defects.

  7. Development of a model for the calculation of energy inputs and emissions of the civil aviation. TREMOD AV; Entwicklung eines Modells zur Berechnung der Energieeinsaetze und Emissionen des zivilen Flugverkehrs. TREMOD AV

    Energy Technology Data Exchange (ETDEWEB)

    Knoerr, Wolfram; Schacht, Alexander [ifeu-Institut fuer Energie- und Umweltforschung GmbH, Heidelberg (Germany); Gores, Sabine [Oeko-Institut e.V. - Institut fuer Angewandte Oekologie, Berlin (Germany)

    2012-09-15

    Due to the Climate Change Convention and the Air Pollution protocols (Geneva, Switzerland) Germany is obliged to establish emission inventories of greenhouse gases and air pollutants. The emission model TREMOD determines annually transport emissions in Germany. The contribution under consideration reports on an extension of this model to the aviation, so that current and differentiated emission results can be produced in future in order to meet the requirements of the reporting. The updated emission values are transferred to the Central System of Emissions (CSE).

  8. Air-cooled, hydrogen-air fuel cell

    Science.gov (United States)

    Shelekhin, Alexander B. (Inventor); Bushnell, Calvin L. (Inventor); Pien, Michael S. (Inventor)

    1999-01-01

    An air-cooled, hydrogen-air solid polymer electrolyte (SPE) fuel cell with a membrane electrode assembly operatively associated with a fluid flow plate having at least one plate cooling channel extending through the plate and at least one air distribution hole extending from a surface of the cathode flow field into the plate cooling channel.

  9. Nightfall: Machine Autonomy in Air-to-Air Combat

    Science.gov (United States)

    2014-06-01

    Debashis Chanda et al., “Large-Area Flexible 3D Optical Negative Index Metamaterial Formed by Nanotransfer Printing,” Nature Nanotechnology 6, no. 7 (July...article restricts the discussion to air-to-air applications because they present an extremely sterile environment compared to the air-to-ground (surface

  10. A Breath of Fresh Air: Addressing Indoor Air Quality

    Science.gov (United States)

    Palliser, Janna

    2011-01-01

    Indoor air pollution refers to "chemical, biological, and physical contamination of indoor air," which may result in adverse health effects (OECD 2003). The causes, sources, and types of indoor air pollutants will be addressed in this article, as well as health effects and how to reduce exposure. Learning more about potential pollutants in home…

  11. EN EL AIRE / In the air

    Directory of Open Access Journals (Sweden)

    Andrés López Fernández

    2011-11-01

    Full Text Available RESUMEN En el aire es un viaje a la primera mitad del siglo XX que nos tratará de acercar la frescura y oportunidad de las calles corredor y los jardines en la ciudad vertical. Se inicia en 1909 en Nueva York, con la publicación por la revista Life de La Torre del Globo, se acerca al Inmueble-Villas y al Plan Obus para Argel de Le Corbusier, y finaliza en 1952 con el proyecto para el conjunto residencial de Golden Lane en Londres de A. y P. Smithson. Fragmentos para la ciudad vertical que se construía sobre papel, tras el espejo, paralela en el tiempo, pero muy distinta a la ciudad real, con el objetivo entre otros de integrar arquitectura y naturaleza. Esas propuestas siguen teniendo hoy un gran valor, en un panorama en que el espacio público ligado a la vivienda colectiva, prácticamente ha desaparecido, y el esfuerzo que se demanda al arquitecto se centra, en tejer a modo de encaje de bolillos, una fachada que envuelva un programa de vivienda, funcional y espacialmente obsoleto.SUMMARY In the air, is a journey to the first half of the twentieth century that will try to bring us to the freshness and opportunity of the corridor streets and gardens in the vertical city. It begins in 1909 in New York, with the publication in Life magazine of the Globe Tower, it approaches the Immeubles-Villas and Plan Obus for Algiers by Le Corbusier, and ends in 1952 with the project for the Golden Lane Estate residential complex in London, by A. and P. Smithson. Fragments for the vertical city that was constructed on paper, behind the mirror, parallel in time, but was very different from the real city, with the aim, inter alia, of integrating architecture and nature. These proposals continue to have great value today, in a scenario where the public space linked to the collective home has virtually disappeared, and the effort that is demanded of the architect focuses on weaving a facade like bobbin lace around a functionally and spatially obsolete housing

  12. Studies efficiency solar air collector

    OpenAIRE

    YORKIN SODIKOVICH ABBASOV; MIRSOLI ODILJANOVICH UZBEKOV

    2016-01-01

    The article presents an analysis of the existing solar air collectors. A description of the design and the results of experimental studies on the effectiveness of the solar air collector with an absorber of from metal shavings.

  13. Air Compliance Complaint Database (ACCD)

    Data.gov (United States)

    U.S. Environmental Protection Agency — THIS DATA ASSET NO LONGER ACTIVE: This is metadata documentation for the Region 7 Air Compliance Complaint Database (ACCD) which logs all air pollution complaints...

  14. Introduction to Indoor Air Quality

    Science.gov (United States)

    Jump to main content US EPA United States Environmental Protection Agency Search Search Indoor Air Quality (IAQ) Share ... indoor air pollution. For this reason, it is important to pay attention to the time and place ...

  15. Air Markets Program Data (AMPD)

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Air Markets Program Data tool allows users to search EPA data to answer scientific, general, policy, and regulatory questions about industry emissions. Air...

  16. Aluminum/air electrochemical cells

    OpenAIRE

    Wang, Lei; 王雷

    2014-01-01

    Aluminum (Al) is a very promising energy carrier given its high capacity and energy density, low cost, earth abundance and environmental benignity. The Al/air battery as a kind of metal/air electrochemical cell attracts tremendous attention. Traditional Al/air batteries suffer from the self-corrosion and related safety problems. In this work, three new approaches were investigated to tackle these challenges and to develop high-performance Al/air cells: (1) incorporate an additional hydrogen/a...

  17. Iron-Air Rechargeable Battery

    Science.gov (United States)

    Narayan, Sri R. (Inventor); Prakash, G.K. Surya (Inventor); Kindler, Andrew (Inventor)

    2014-01-01

    Embodiments include an iron-air rechargeable battery having a composite electrode including an iron electrode and a hydrogen electrode integrated therewith. An air electrode is spaced from the iron electrode and an electrolyte is provided in contact with the air electrode and the iron electrodes. Various additives and catalysts are disclosed with respect to the iron electrode, air electrode, and electrolyte for increasing battery efficiency and cycle life.

  18. Hot Air Engines

    Directory of Open Access Journals (Sweden)

    P. Stouffs

    2011-01-01

    Full Text Available Invented in 1816, the hot-air engines have known significant commercial success in the nineteenth century, before falling into disuse. Nowadays they enjoy a renewed interest for some specific applications. The "hot-air engines" family is made up of two groups: Stirling engines and Ericsson engines. The operating principle of Stirling and Ericsson engines, their troubled history, their advantages and their niche applications are briefly presented, especially in the field of micro-combined heat and power, solar energy conversion and biomass energy conversion. The design of an open cycle Ericsson engine for solar application is proposed. A first prototype of the hot part of the engine has been built and tested. Experimental results are presented.

  19. Air transport system

    CERN Document Server

    Schmitt, Dieter

    2016-01-01

    The book addresses all major aspects to be considered for the design and operation of aircrafts within the entire transportation chain. It provides the basic information about the legal environment, which defines the basic requirements for aircraft design and aircraft operation. The interactions between  airport, air traffic management and the airlines are described. The market forecast methods and the aircraft development process are explained to understand the very complex and risky business of an aircraft manufacturer. The principles of flight physics as basis for aircraft design are presented and linked to the operational and legal aspects of air transport including all environmental impacts. The book is written for graduate students as well as for engineers and experts, who are working in aerospace industry, at airports or in the domain of transport and logistics.

  20. Aeromicrobiology/air quality

    Science.gov (United States)

    Andersen, Gary L.; Frisch, A.S.; Kellogg, Christina A.; Levetin, E.; Lighthart, Bruce; Paterno, D.

    2009-01-01

    The most prevalent microorganisms, viruses, bacteria, and fungi, are introduced into the atmosphere from many anthropogenic sources such as agricultural, industrial and urban activities, termed microbial air pollution (MAP), and natural sources. These include soil, vegetation, and ocean surfaces that have been disturbed by atmospheric turbulence. The airborne concentrations range from nil to great numbers and change as functions of time of day, season, location, and upwind sources. While airborne, they may settle out immediately or be transported great distances. Further, most viable airborne cells can be rendered nonviable due to temperature effects, dehydration or rehydration, UV radiation, and/or air pollution effects. Mathematical microbial survival models that simulate these effects have been developed.

  1. Pupils' Understanding of Air Pollution

    Science.gov (United States)

    Dimitriou, Anastasia; Christidou, Vasilia

    2007-01-01

    This paper reports on a study of pupils' knowledge and understanding of atmospheric pollution. Specifically, the study is aimed at identifying: 1) the extent to which pupils conceptualise the term "air pollution" in a scientifically appropriate way; 2) pupils' knowledge of air pollution sources and air pollutants; and 3) pupils' knowledge of air…

  2. Overview of Emerging Air Sensors

    Science.gov (United States)

    These slides will be presented at the 2014 National Ambient Air Monitoring Conference in Atlanta, GA during August 11-15, 2014. The goal is to provide an overview of air sensor technology and the audience will be primarily state air monitoring agencies and EPA Regions.

  3. Improving IAQ Via Air Filtration.

    Science.gov (United States)

    Monk, Brian

    1999-01-01

    Provides tips on using air filtration to control indoor air quality in educational facilities, including dedicated spaces with unique air quality conditions such as in libraries, museums and archival storage areas, kitchens and dining areas, and laboratories. The control of particulate contaminants, gaseous contaminants, and moisture buildup are…

  4. Air Pollution Primer. Revised Education.

    Science.gov (United States)

    Corman, Rena

    This revised and updated book is written to inform the citizens on the nature, causes, and effects of air pollution. It is written in terms familiar to the layman with the purpose of providing knowledge and motivation to spur community action on clean air policies. Numerous charts and drawings are provided to support discussion of air pollution…

  5. Fast Air Temperature Sensors

    DEFF Research Database (Denmark)

    Hendricks, Elbert

    1998-01-01

    The note documents briefly work done on a newly developed sensor for making fast temperature measurements on the air flow in the intake ports of an SI engine and in the EGR input line. The work reviewed has been carried out in close cooperation with Civ. Ing. Michael Føns, the author (IAU......) and Spencer C. Sorenson (ET). The theory which decribes in detail the overall dynamic chracteristics of the sensor was developed at IAU, DTU....

  6. Air Conditioning Overflow Sensor

    Science.gov (United States)

    1996-01-01

    The Technology Transfer Office at Stennis Space Center helped a local inventor develop a prototype of an attachment for central air conditioners and heat pumps that helps monitor water levels to prevent condensation overflow. The sensor will indicate a need for drain line maintenance and prevent possible damage caused by drain pan water spillover. An engineer in the Stennis Space Center prototype Development Laboratory used SSC sensor technology in the development of the sensor.

  7. Air Cargo Security

    Science.gov (United States)

    2007-07-30

    passenger and all-cargo aircraft. The air cargo system consists of a large, complex distribution network linking manufacturers and shippers to freight...free transportation to San Jose, California. His only luggage was a guitar case that concealed hammers, mallets, a knife, and a spear gun. At the...authorities and airplane manufacturers study methods to mitigate the effects of in-flight explosions.76 The FAA has had a active research program in blast

  8. Dental Compressed Air Systems.

    Science.gov (United States)

    1992-03-01

    compressor ex- cept that the piston rings are made of a low friction material (usually a Teflon- composite ) The piston walls are oil-less and all friction... descal - ing. The water-cooled models are smaller, more efficient, and cause less heating of room air. Water-cooled aftercoolers must have an...dry to a dew point of -400C (-400 F). It has high adsorption capacity. (b) Silica Gel , which must be protected from liquid (usually by a layer of

  9. Clearing the Air

    Institute of Scientific and Technical Information of China (English)

    YIN PUMIN

    2011-01-01

    On November 8,seven Beijing residents,including a representative from a local environmental organization,were invited by the Beijing Municipal Environmental Protection Bureau (BMEPB)to visit its air-quality monitoring center,The visit was the first of a regular program of visits that will take 40 visitors to the center every Tuesday in hopes of giving them a betttr understanding of how airquality data are collected and analyzed.

  10. Air Consumption Analysis of Air-Jet Weaving

    Directory of Open Access Journals (Sweden)

    RAJ KUMAR KHIANI

    2016-07-01

    Full Text Available In Textile industry, production is mostly key concern for Industry owner. This always has attracted researchers and machines manufacturers to make new developments in process and machines. Air-jet is one of the leading and successful highest productive weaving machines. However, it is now well established that due to add of charges of compressed air, manufacturing cost of air-jet weaving machine is higher as compared with rapier and projectile weaving machines. This is why countries having energy issues do not prefer air-jet weaving machines comparing projectile weaving machines. In this regard, several researchers and machine manufacturers have continuously been working to improve the efficiency of air-jet weft insertion. However, industry practice is as important as design made by researchers. The aim of this research is to investigate the air consumption of air-jet weaving on industrial scale practice. In this study, five weaving machine of same manufacturer and model were selected. It was observed that despite of manufacturing same quality of fabric, air consumption was varying almost in all weaving machines. Conventionally, mill workers adopt hit and trial practice in weaving industry including airpressure setting which leads to variation of nozzle pressure. Main reason of disparity of air consumption in air-jet weaving machines may be variation of distance from compressor to weaving machines, number of joints, un-necessary valve opening and pipes leakages cause an increase of compressed air consumption.

  11. Enhancing indoor air quality –The air filter advantage

    Directory of Open Access Journals (Sweden)

    Vannan Kandi Vijayan

    2015-01-01

    Full Text Available Air pollution has become the world's single biggest environmental health risk, linked to around 7 million deaths in 2012 according to a recent World Health Organisation (WHO report. The new data further reveals a stronger link between, indoor and outdoor air pollution exposure and cardiovascular diseases, such as strokes and ischemic heart disease, as well as between air pollution and cancer. The role of air pollution in the development of respiratory diseases, including acute respiratory infections and chronic obstructive pulmonary diseases, is well known. While both indoor and outdoor pollution affect health, recent statistics on the impact of household indoor pollutants (HAP is alarming. The WHO factsheet on HAP and health states that 3.8 million premature deaths annually - including stroke, ischemic heart disease, chronic obstructive pulmonary disease (COPD and lung cancer are attributed to exposure to household air pollution. Use of air cleaners and filters are one of the suggested strategies to improve indoor air quality. This review discusses the impact of air pollutants with special focus on indoor air pollutants and the benefits of air filters in improving indoor air quality.

  12. Air System Information Management

    Science.gov (United States)

    Filman, Robert E.

    2004-01-01

    I flew to Washington last week, a trip rich in distributed information management. Buying tickets, at the gate, in flight, landing and at the baggage claim, myriad messages about my reservation, the weather, our flight plans, gates, bags and so forth flew among a variety of travel agency, airline and Federal Aviation Administration (FAA) computers and personnel. By and large, each kind of information ran on a particular application, often specialized to own data formats and communications network. I went to Washington to attend an FAA meeting on System-Wide Information Management (SWIM) for the National Airspace System (NAS) (http://www.nasarchitecture.faa.gov/Tutorials/NAS101.cfm). NAS (and its information infrastructure, SWIM) is an attempt to bring greater regularity, efficiency and uniformity to the collection of stovepipe applications now used to manage air traffic. Current systems hold information about flight plans, flight trajectories, weather, air turbulence, current and forecast weather, radar summaries, hazardous condition warnings, airport and airspace capacity constraints, temporary flight restrictions, and so forth. Information moving among these stovepipe systems is usually mediated by people (for example, air traffic controllers) or single-purpose applications. People, whose intelligence is critical for difficult tasks and unusual circumstances, are not as efficient as computers for tasks that can be automated. Better information sharing can lead to higher system capacity, more efficient utilization and safer operations. Better information sharing through greater automation is possible though not necessarily easy.

  13. Air transparent soundproof window

    Directory of Open Access Journals (Sweden)

    Sang-Hoon Kim

    2014-11-01

    Full Text Available A soundproof window or wall which is transparent to airflow is presented. The design is based on two wave theories: the theory of diffraction and the theory of acoustic metamaterials. It consists of a three-dimensional array of strong diffraction-type resonators with many holes centered on each individual resonator. The negative effective bulk modulus of the resonators produces evanescent wave, and at the same time the air holes with subwavelength diameter existed on the surfaces of the window for macroscopic air ventilation. The acoustic performance levels of two soundproof windows with air holes of 20mm and 50mm diameters were measured. The sound level was reduced by about 30 - 35dB in the frequency range of 400 - 5,000Hz with the 20mm window, and by about 20 - 35dB in the frequency range of 700 - 2,200Hz with the 50mm window. Multi stop-band was created by the multi-layers of the window. The attenuation length or the thickness of the window was limited by background noise. The effectiveness of the soundproof window with airflow was demonstrated by a real installation.

  14. Development and testing in practice of a multidimensional evaluation and decision support system for integrated river basin management in the context of ecology, technical systems and social-economy along with an example of the Lippe river basin. Final report; Entwicklung und Praxiserprobung eines mehrdimensionalen Bewertungs- und Entscheidungsunterstuetzungs-Systems fuer integriertes Flusseinzugsgebietsmanagement im Spannungsfeld von Oekologie, Technik und Sozio-Oekonomie am Beispiel der Lippe. Schlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Schultz, G.A.; Finke, L.; Rudolph, K.U.; Petruck, A.

    2001-04-09

    allgemein gueltigen Inhalte des Forschungsantrags sowie die Begleitumstaende seiner Erstellung. Thematisch geht es hierbei um die nachfolgend dargestellte Problemstellung. Wasserwirtschaft soll kuenftig im Sinne der EU als integriertes Flusseinzugsgebietsmanagement betrieben weren. Das hierfuer erforderliche - derzeit kaum vorhandene - methodische Instrumentarium zu entwickeln, ist Hauptziel des Forschungsvorhabens. Dies bedingt zum einen Theorieentwicklung, zum anderen deren Validierung an einem realen Flusssystem, wofuer hier das Lippe-Einzugsgebiet gewaehlt wurde. Flusseinzugsgebietsmanagement beinhaltet die Durchfuehrung von zahlreichen Massnahmen, die den derzeitigen Zustand in Hinblick auf die Wasserqualitaet in den Gewaessern den gewuenschten Zielzustaenden annaehert. Hierzu muessen vorgesehene Massnahmen zunaechst mehrdimensional bewertet werden (oekologisch, technisch, sozio-oekonomisch). Ein zu entwickelndes Entscheidungsunterstuetzungs-System soll diese bewerteten Massnahmenbuendel zu wenigen entscheidungsrelevanten Parametern aggregieren, wodurch den Entscheidungstraegern die Wahl ihrer praeferierten Alternative in transparenter Weise ermoeglicht wird. Das Projekt wird zu oekonomisch besseren Loesungen fuehren und Basis fuer weitergehende Forschungen sein koennen. (orig.)

  15. Solid-Sorbent Air Sampler

    Science.gov (United States)

    Galen, T. J.

    1986-01-01

    Portable unit takes eight 24-hour samples. Volatile organic compounds in air collected for analysis by portable, self-contained sampling apparatus. Sampled air drawn through sorbent material, commercial porous polymer of 2, 3-diphenyl-p-phenylene oxide. High-boiling-point organic compounds adsorbed onto polymer, while low-boiling-point organics pass through and returned to atmosphere. Sampler includes eight sample tubes filled with polymeric sorbent. Organic compounds in atmosphere absorbed when air pumped through sorbent. Designed for checking air in spacecraft, sampler adaptable to other applications as leak detection, gas-mixture analysis, and ambient-air monitoring.

  16. Air Risk Information Support Center

    Energy Technology Data Exchange (ETDEWEB)

    Shoaf, C.R.; Guth, D.J. [Environmental Protection Agency, Washington, DC (United States)

    1990-12-31

    The Air Risk Information Support Center (Air RISC) was initiated in early 1988 by the US Environmental Protection Agency`s (EPA) Office of Health and Environmental Assessment (OHEA) and the Office of Air Quality Planning and Standards (OAQPS) as a technology transfer effort that would focus on providing information to state and local environmental agencies and to EPA Regional Offices in the areas of health, risk, and exposure assessment for toxic air pollutants. Technical information is fostered and disseminated by Air RISCs three primary activities: (1) a {open_quotes}hotline{close_quotes}, (2) quick turn-around technical assistance projects, and (3) general technical guidance projects. 1 ref., 2 figs.

  17. Air Quality at Your Street

    DEFF Research Database (Denmark)

    Jensen, Steen Solvang; Becker, Thomas; Ketzel, Matthias

    DTU Transport as well as data on travel speeds based on GPS data from SpeedMap from the Danish Road Directorate. Modelled concentrations have been compared to fixed regional, urban background and street air quality monitoring stations to assess uncertainties, and to model results from about 30 streets......Citizens are frequently concerned about the air quality where they live, where they go to work, where their children go to kindergarten or where they want to move to. Municipalities may also have an interest in location based air quality information e.g. in relation to screening of complaints from...... concerned citizents, or in the context of localization of institutions, etc. The purpose of the project ‘Air Quality at Your Street’ is to create interactive air quality maps on the internet using webGIS to illustrate the geographical variation of air quality in Denmark for selected health related air...

  18. Indoor Air Pollution (Environmental Health Student Portal)

    Science.gov (United States)

    Skip Navigation National Library of Medicine Environmental Health Student Portal Connecting Middle School Students to Environmental Health Information Menu Home Air Pollution Air Pollution Home Indoor Air Pollution Outdoor Air ...

  19. ELBE - Validation and improvement of load prognoses - Phase 1; ELBE - Validierung und Verbesserung von Lastprognosen (Projektphase 1) - Zwischenbericht

    Energy Technology Data Exchange (ETDEWEB)

    Kronig, P.; Hoeckel, M.

    2008-07-01

    This comprehensive interim report for the Swiss Federal Office of Energy (SFOE) reviews work done at the Bernese University of Applied Sciences concerning various methods for the making of prognoses for grid loading in a liberalised electricity market with increasing supply of power from renewable resources. The liberalised Swiss electricity market is reviewed and production planning instruments are examined, as are the factors that influence such planning. Examples of load profiles are presented and discussed, as are the social, technical and meteorological factors that influence demand. The accuracy of various prognosis methods is reviewed. Simple methods using Excel spread-sheets and MatLab are compared and discussed. Commercially available systems are also briefly examined and work to be done in a second phase of the project is reviewed.

  20. ELBE - Validation and improvement of load prognoses (project phase 1); ELBE - Validierung und Verbesserung von Lastprognosen (Projektphase 1)

    Energy Technology Data Exchange (ETDEWEB)

    Kronig, P.; Waelchli, U.; Zuercher, S. [BKW FMB Energie AG, Bern (Switzerland); Hoeckel, M. [Berner Fachhochschule, Biel (Switzerland)

    2009-10-15

    In the project 'Prognosekompetenz' we have identified and quantified by means of a comprehensive analysis of grid and climate data the factors which have a significant impact on the grid load. The study focused in the beginning on the regional data from a big electricity utility. In a second step, additional local data were also considered to better identify climatic and economic characteristics. We found a strong correlation between load, on the one hand, and outdoor temperature and economic activity, on the other hand. The influence of further factors is very limited. On this basis we developed two Matlab-based, easy-to-use tools for the prediction of the daily grid load profile in quarter-of-hour steps. One tool uses the method of the transfer function, where specific correlation factors account for the influential factors. The second tool based on the method of the artificial neuronal network, which had been tuned with data from several years to make sure that a high accuracy is obtained. We could show by self developed testing procedures that for both tools the precision in forecasting the daily load profile is very high. (authors)

  1. Basistests Suisse Sport Test Konzept: Validierung einer sportmotorischen Basistestbatterie für den Schul- und Nachwuchssport

    OpenAIRE

    Rosser, Thomas; Lea, Müller; Lüthy, Fabian; Vogt, Michael

    2008-01-01

    Physical fitness can be evaluated in competitive and school sports with different field tests under different conditions and goals. To produce valid results, a field test must be practical and reach high standards of test criteria (objectivity, reliability, validity). The purpose of this study was to investigate the test criteria and the practicability of a group of field tests called «SUISSE Sport Test Konzept Basis Feldtestbatterie». For 20-m sprint, ventral trunk muscle test, standing long...

  2. Steam and hot air injection for thermal rehabilitation of contaminated sites; Wasserdampf- und Heissluftinjektion zur thermischen Sanierung kontaminierter Standorte

    Energy Technology Data Exchange (ETDEWEB)

    Schmidt, R.

    2001-07-01

    Thermal in situ rehabilitation technologies are a promising alternative to conventional methods of cleaning up contaminated sites. The fact that an increase in temperature changes the physical properties of materials makes it possible, in principle, to release large quantities of pollutants within short time periods. The use of pure steam or steam/air mixtures as fluid thermal carriers permits converting subterranean non-aqueous-phase pollutants into the gas phase through increased vapour pressure and transporting them to the surface by means of soil air aspiration for further treatment. The purpose of the present two-stage research project was to systematically develop a thermal in situ rehabilitation technology using steam as fluid heat carrier and use it for land rehabilitation operations on a pilot basis. In the first, fundamental project phase aspects of heat transport (Faerber, 1997) and pollutant behaviour (Betz, 1998)in homogenous porous media upon pure steam injection were explored at a laboratory and technical scale using containers of different sizes (1D, 2D, 3D). The results were used to derive application criteria for this technology. [German] Thermische In-situ-Sanierungstechnologien stellen bei der Reinigung kontaminierter Standorte eine vielversprechende Alternative zu konventionellen Verfahren dar. Die Veraenderung physikalischer Stoffeigenschaften mit steigender Temperatur ermoeglicht grundsaetzlich hohe Schadstoffaustraege innerhalb kurzer Zeitraeume. Beim Einsatz von reinem Wasserdampf oder Wasserdampf-Luft-Gemischen als Waermetraegerfluid koennen im Untergrund in nicht waessriger Phase vorliegende Schadstoffe hauptsaechlich wegen der erhoehten Dampfdruecke in die Gasphase ueberfuehrt, ueber eine Bodenluftabsaugung an die Oberflaeche transportiert und dann einer weiteren Behandlung zugefuehrt werden. Zielsetzung eines zweistufigen Forschungsvorhabens war die systematische Entwicklung einer thermischen In-situ-Sanierungstechnologie unter

  3. Comparison between Different Air Distribution Systems

    DEFF Research Database (Denmark)

    Nielsen, Peter V.

    The aim of an air conditioning system is to remove excess heat in a room and replace room air with fresh air to obtain a high air quality. It is not sufficient to remove heat and contaminated air, it is also necessary to distribute and control the air movement in the room to create thermal comfort...

  4. Extensive air showers

    CERN Document Server

    Rao, M V S

    1997-01-01

    Ultrahigh energy cosmic rays carry information about their sources and the intervening medium apart from providing a beam of particles for studying certain features of high energy interactions currently inaccessible at man-made accelerators. They can at present be studied only via the extensive air showers (EAS's) they generate while passing through the Earth's atmosphere, since their fluxes are too low for the experiments of limited capability flown in balloons and satellites. The EAS is generated by a series of interactions of the primary cosmic ray and its progeny with the atmospheric nucle

  5. Solid sorbent air sampler

    Science.gov (United States)

    Galen, T. J.

    1986-04-01

    A fluid sampler for collecting a plurality of discrete samples over separate time intervals is described. The sampler comprises a sample assembly having an inlet and a plurality of discreet sample tubes each of which has inlet and outlet sides. A multiport dual acting valve is provided in the sampler in order to sequentially pass air from the sample inlet into the selected sample tubes. The sample tubes extend longitudinally of the housing and are located about the outer periphery thereof so that upon removal of an enclosure cover, they are readily accessible for operation of the sampler in an analysis mode.

  6. AIR VELOCITY SENSOR

    Institute of Scientific and Technical Information of China (English)

    潘本琛

    1992-01-01

    During the last twenty years there has been rapid progress in the use of automation in a wide range of industries,as well as in military, scientific application. However, the progress in the application of automatic control is often hindered by the lack of accurate, reliable measuring apparatus. An economic thermal couple air flow sensor with better linearity (accuracy is ±5% of full scale) has been successfully made at Trolex Ltd. Many other existing sensors fail in the application of industries because of non-linearity.

  7. Teatro al aire libre

    Directory of Open Access Journals (Sweden)

    Philippe Canac

    2016-11-01

    Full Text Available Siendo cada vez más frecuentes y numerosas las peregrinaciones a la basílica de Notre Dame, de Laus (Altos Alpes, su capacidad resultaba hace tiempo insuficiente para acoger a sus peregrinos. Este fue el motivo de crear, en un terreno situado ante el atrio de la basílica, un conjunto, que permitiese celebrar misas al aire libre, ceremonias litúrgicas o representaciones de teatro religioso y que dispusiese de todas las posibilidades para conseguir la libertad del juego escénico.

  8. Air Quality Monitoring Programme

    DEFF Research Database (Denmark)

    Kemp, K.; Palmgren, F.

    The Danish Air Quality Monitoring Programme (LMP IV) has been revised in accordance with the Framework Directive and the first three daughter directives of SO2, NOx/NO2, PM10, lead, benzene, CO and ozone. PM10 samplers are under installation and the installation will be completed during 2002....... The PM10 results from 2000 are spares, only TSP are thus included in this report. The data sets for year 2000 is complete for many stations. The monitoring programme consists of 10 stations plus 2 extra stations under the Municipality of Copenhagen. The SO2 and lead levels are still decreasing and far...

  9. Ag-Air Service

    Science.gov (United States)

    1981-01-01

    Econ, Inc.'s agricultural aerial application, "ag-air," involves more than 10,000 aircraft spreading insecticides, herbicides, fertilizer, seed and other materials over millions of acres of farmland. Difficult for an operator to estimate costs accurately and decide what to charge or which airplane can handle which assignment most efficiently. Computerized service was designed to improve business efficiency in choice of aircraft and determination of charge rates based on realistic operating cost data. Each subscriber fills out a detailed form which pertains to his needs and then receives a custom-tailored computer printout best suited to his particular business mix.

  10. Air gun wounding and current UK laws controlling air weapons.

    Science.gov (United States)

    Bruce-Chwatt, Robert Michael

    2010-04-01

    Air weapons whether rifles or pistols are, potentially, lethal weapons. The UK legislation is complex and yet little known to the public. Hunting with air weapons and the laws controlling those animals that are permitted to be shot with air weapons is even more labyrinthine due to the legal power limitations on the possession of air weapons. Still relatively freely available by mail order or on the Internet, an increasing number of deaths have been reported from the misuse of air weapons or accidental discharges. Ammunition for air weapons has become increasingly sophisticated, effective and therefore increasingly dangerous if misused, though freely available being a mere projectile without a concomitant cartridge containing a propellant and an initiator.

  11. Nitrogen fluorescence in air for observing extensive air showers

    Directory of Open Access Journals (Sweden)

    Tsunesada Y.

    2013-06-01

    Full Text Available Extensive air showers initiate the fluorescence emissions from nitrogen molecules in air. The UV-light is emitted isotropically and can be used for observing the longitudinal development of extensive air showers in the atmosphere over tenth of kilometers. This measurement technique is well-established since it is exploited for many decades by several cosmic ray experiments. However, a fundamental aspect of the air shower analyses is the description of the fluorescence emission in dependence on varying atmospheric conditions. Different fluorescence yields affect directly the energy scaling of air shower reconstruction. In order to explore the various details of the nitrogen fluorescence emission in air, a few experimental groups have been performing dedicated measurements over the last decade. Most of the measurements are now finished. These experimental groups have been discussing their techniques and results in a series of Air Fluorescence Workshops commenced in 2002. At the 8th Air Fluorescence Workshop 2011, it was suggested to develop a common way of describing the nitrogen fluorescence for application to air shower observations. Here, first analyses for a common treatment of the major dependences of the emission procedure are presented. Aspects like the contributions at different wavelengths, the dependence on pressure as it is decreasing with increasing altitude in the atmosphere, the temperature dependence, in particular that of the collisional cross sections between molecules involved, and the collisional de-excitation by water vapor are discussed.

  12. Nitrogen fluorescence in air for observing extensive air showers

    Science.gov (United States)

    Keilhauer, B.; Bohacova, M.; Fraga, M.; Matthews, J.; Sakaki, N.; Tameda, Y.; Tsunesada, Y.; Ulrich, A.

    2013-06-01

    Extensive air showers initiate the fluorescence emissions from nitrogen molecules in air. The UV-light is emitted isotropically and can be used for observing the longitudinal development of extensive air showers in the atmosphere over tenth of kilometers. This measurement technique is well-established since it is exploited for many decades by several cosmic ray experiments. However, a fundamental aspect of the air shower analyses is the description of the fluorescence emission in dependence on varying atmospheric conditions. Different fluorescence yields affect directly the energy scaling of air shower reconstruction. In order to explore the various details of the nitrogen fluorescence emission in air, a few experimental groups have been performing dedicated measurements over the last decade. Most of the measurements are now finished. These experimental groups have been discussing their techniques and results in a series of Air Fluorescence Workshops commenced in 2002. At the 8th Air Fluorescence Workshop 2011, it was suggested to develop a common way of describing the nitrogen fluorescence for application to air shower observations. Here, first analyses for a common treatment of the major dependences of the emission procedure are presented. Aspects like the contributions at different wavelengths, the dependence on pressure as it is decreasing with increasing altitude in the atmosphere, the temperature dependence, in particular that of the collisional cross sections between molecules involved, and the collisional de-excitation by water vapor are discussed.

  13. Air Traffic Flow Management

    CERN Document Server

    Ganu, Hrishikesh V

    2008-01-01

    Air Traffic Flow Management is the regulation of air traffic in order to avoid exceeding airport or flight sector capacity in handling traffic, and to ensure that available capacity is used efficiently. We have tried to explore the logic behind the claims by Bertsimas et.al about integral solutions to the LP relaxation of the Traffic Flow Management Problem(TFMP). Polyhedral theory only indicates that the stronger TFMP formulation of Bertsimas et.al might lead to integral solutions in some cases. Our computations indicate that the encouraging results reported by Bertsimas et.al are not merely fortuitous or due to their specific data set. Indeed, we found that the TFMP had integral solutions even in case of artificial data sets generated to include severe conflicts in the flight schedules. In our limited tests with 4-5 scenarios, we obtained non-integral solutions only once. This is of significant practical importance because, the LP relaxation can be solved even on small machines with low memory and processor...

  14. Managing Air in Olympic Cities

    Directory of Open Access Journals (Sweden)

    Qing W. Tian

    2008-01-01

    Full Text Available The 21st century Olympic Agenda aims to align itself with the concept of sustainable development and has driven improved environmental quality in host cities, such as the Green Games in Sydney 2000 and the planned Beijing 2008 Games and in London 2012 as the Low Carbon Games. Air quality has long been a concern of Olympic mega-cities, although the air quality plans and strategies have often seemed short-lived and unsustainable in the long term. We have explored air quality data and air pollution control from seven Olympic cities: Mexico City, Los Angeles, Atlanta, Sydney and Athens and also Beijing and London which will host Olympic Games in near future. The study shows that despite a high altitude and air pollution problems, Mexico City had no clear environmental policy in place for the 1968 games. The characteristic smog of Los Angeles raised concerns about athletic performance at the Olympic Games of 1984, but there were limited efforts to tackle the ozone concentration during these games. The 1996 Atlanta Games represents a case where temporary public transport changes were used as a tactic to reduce air pollution. In Sydney a well planned sustainable strategy reduced air pollutants and CO2 emissions in 2000, but Athens' long efforts to improve air quality for the 2004 games were not wholly effective. Even where strategies proved successful the improvements in air quality seem short-lived. Current host cities Beijing and London are developing emission reduction plans. These have clear air quality objectives and are well intentioned. However, the improvements may be too narrow and may not be sustainable in the long term. Our analysis looks at the origins of success and failure and how more coherent improvements might be achieved and what would promote sustainable plans for air quality management at future games. The study illustrates the feedback between air pollution science and policy awareness.

  15. Material Transport with Air Jet

    Directory of Open Access Journals (Sweden)

    István Patkó

    2005-11-01

    Full Text Available In the field of industry, there are only a very few examples of material transportwith air jet, and one of these is the air jet loom. In this weaving technology, the weft (thetransversal yarn of the fabric is shot by air jet. This paper will set up the mathematicalmodel of yarn end movement. For a special case, I will specify a solution of the model.

  16. The Cost of Air Pollution

    OpenAIRE

    World Bank; Institute for Health Metrics and Evaluation

    2016-01-01

    The Cost of Air Pollution: Strengthening the economic case for action, a joint study of the World Bank and the Institute for Health Metrics and Evaluation (IHME), seeks to estimate the costs of premature deaths related to air pollution, to strengthen the case for action and facilitate decision making in the context of scarce resources. An estimated 5.5 million lives were lost in 2013 to diseases associated with outdoor and household air pollution, causing human suffering and reducing economic...

  17. Air and metal hydride battery

    Energy Technology Data Exchange (ETDEWEB)

    Lampinen, M.; Noponen, T. [Helsinki Univ. of Technology, Otaniemi (Finland). Lab. of Applied Thermodynamics

    1998-12-31

    The main goal of the air and metal hydride battery project was to enhance the performance and manufacturing technology of both electrodes to such a degree that an air-metal hydride battery could become a commercially and technically competitive power source for electric vehicles. By the end of the project it was possible to demonstrate the very first prototype of the air-metal hydride battery at EV scale, achieving all the required design parameters. (orig.)

  18. "Air embolism during fontan operation"

    Directory of Open Access Journals (Sweden)

    Madan Mohan Maddali

    2014-01-01

    Full Text Available In patients with a right to left intracardiac shunt, air embolism results in an obligatory systemic embolization. Nonembolization of entrained air is described in a child with a single ventricle physiology who had earlier undergone bidirectional Glenn shunt construction and Damus-Kaye-Stansel anastomosis. The air entrainment was detected by intra-operative transesophageal echocardiography. The combined effect of a "diving bell" phenomenon and mild aortic valve regurgitation are suggested as the reasons for the confinement of air into the ventricle preventing catastrophic systemic embolization.

  19. [Air quality and climate change].

    Science.gov (United States)

    Loft, Steffen

    2009-10-26

    Air quality, health and climate change are closely connected. Ozone depends on temperature and the greenhouse gas methane from cattle and biomass. Pollen presence depends on temperature and CO2. The effect of climate change on particulate air pollution is complex, but the likely net effect is greater health risks. Reduction of greenhouse-gas emissions by reduced livestock production and use of combustion for energy production, transport and heating will also improve air quality. Energy savings in buildings and use of CO2 neutral fuels should not deteriorate indoor and outdoor air quality.

  20. Aerodynamical sealing by air curtains

    Science.gov (United States)

    Frank, Daria; Linden, Paul

    2015-11-01

    Air curtains are artificial high-velocity plane turbulent jets which are installed in a doorway in order to reduce the heat and the mass exchange between two environments. The performance of an air curtain is assessed in terms of the sealing effectiveness E, the fraction of the exchange flow prevented by the air curtain compared to the open-door situation. The main controlling parameter for air curtain dynamics is the deflection modulus Dm representing the ratio of the momentum flux of the air curtain and the transverse forces acting on it due to the stack effect. In this talk, we examine the influence of two factors on the performance of an air curtain: the presence of an additional ventilation pathway in the room, such as a small top opening, and the effects of an opposing buoyancy force which for example arises if a downwards blowing air curtain is heated. Small-scale experiments were conducted to investigate the E (Dm) -curve of an air curtain in both situations. We present both experimental results and theoretical explanations for our observations. We also briefly illustrate how simplified models developed for air curtains can be used for more complex phenomena such as the effects of wind blowing around a model building on the ventilation rates through the openings.

  1. Modern Air Situation Picture Display for Air Surveillance Radar Applications

    Directory of Open Access Journals (Sweden)

    M. Stamatović

    2013-06-01

    Full Text Available We have developed a modern air situation picture display applicable in air surveillance radars. The display is based on commercial of-the-shelf hardware and custom software. This paper is focused on the details of the development process. Comparison with a similar commercially available product is given too.

  2. Colorado Air Quality Control Regulations and Ambient Air Quality Standards.

    Science.gov (United States)

    Colorado State Dept. of Health, Denver. Div. of Air Pollution Control.

    Regulations and standards relative to air quality control in Colorado are defined in this publication. Presented first are definitions of terms, a statement of intent, and general provisions applicable to all emission control regulations adopted by the Colorado Air Pollution Control Commission. Following this, three regulations are enumerated: (1)…

  3. Norma Primaria de calidad del aire AIR QUALITY STANDARD

    Directory of Open Access Journals (Sweden)

    PATRICIA MATUS C.

    2002-04-01

    Full Text Available Las normas primarias de calidad del aire tienen por finalidad proteger la salud de la población de la contaminación atmosférica. Ellas establecen un nivel de riesgo socialmente aceptado. Este artículo describe los antecedentes considerados durante el proceso de actualización de la regulación vigente en Chile. Detalla conceptos sobre la calidad del aire, describe los efectos en la salud de los contaminantes, y el procedimiento seguido para fijar los nuevos estándares Finaliza enumerando la norma primaria de calidad del aire, sus valores y los limites definidos para ser considerados en el ámbito de la gestión de los episodios críticos o de alta contaminaciónThe main purpose of air quality standards is to protect people health from air pollution. They establish a socially accepted level of risk. This article describes the background information considered during the process for updating the current Chilean regulation. Concepts about quality of air, and the effects of the pollutants on the health are described. The procedure followed to fix the new standards is detailed. Finally we state the primary air quality norm, its values as well as the critical limits in order to control critical events of high air pollution

  4. Reactive Air Aluminization

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Jung-Pyung; Chou, Y. S.; Stevenson, Jeffry W.

    2011-10-28

    Ferritic stainless steels and other alloys are of great interest to SOFC developers for applications such as interconnects, cell frames, and balance of plant components. While these alloys offer significant advantages (e.g., low material and manufacturing cost, high thermal conductivity, and high temperature oxidation resistance), there are challenges which can hinder their utilization in SOFC systems; these challenges include Cr volatility and reactivity with glass seals. To overcome these challenges, protective coatings and surface treatments for the alloys are under development. In particular, aluminization of alloy surfaces offers the potential for mitigating both evaporation of Cr from the alloy surface and reaction of alloy constituents with glass seals. Commercial aluminization processes are available to SOFC developers, but they tend to be costly due to their use of exotic raw materials and/or processing conditions. As an alternative, PNNL has developed Reactive Air Aluminization (RAA), which offers a low-cost, simpler alternative to conventional aluminization methods.

  5. Indoor air pollution

    Energy Technology Data Exchange (ETDEWEB)

    Gold, D.R. (Channing Laboratory, Brigham and Women' s Hospital, Boston, MA (United States))

    1992-06-01

    This article summarizes the health effects of indoor air pollutants and the modalities available to control them. The pollutants discussed include active and passive exposure to tobacco smoke; combustion products of carbon monoxide; nitrogen dioxide; products of biofuels, including wood and coal; biologic agents leading to immune responses, such as house dust mites, cockroaches, fungi, animal dander, and urine; biologic agents associated with infection such as Legionella and tuberculosis; formaldehyde; and volatile organic compounds. An approach to assessing building-related illness and tight building' syndrome is presented. Finally, the article reviews recent data on hospital-related asthma and exposures to potential respiratory hazards such as antineoplastic agents, anesthetic gases, and ethylene oxide.88 references.

  6. Air Composition and Chemistry

    Science.gov (United States)

    Brimblecombe, Peter

    1996-01-01

    This book is about the atmosphere and humanity's influence on it. For this new edition, Brimblecombe has rewritten and updated much of the book. In the early chapters, he discusses the geochemical, biological and maritime sources of the trace gases. Next, he examines the chemistry of atmospheric gases, suspended particles, and rainfall. After dealing with the natural atmosphere, he examines the sources of air pollution and its effects, with all scenarios updated from the last edition. Scenarios include decline in health, damage to plants and animals, indoor pollution, and acid rain. The final chapters, also revised, are concerned with the chemistry and evolution of the atmospheres of the planets of the solar system. Students with an interest in chemistry and the environmental sciences will find this book highly valuable.

  7. de Buenos Aires

    Directory of Open Access Journals (Sweden)

    Joaquín Linne

    2014-01-01

    Full Text Available Esta investigación explora la situación de los cibercafés en la Ciudad de Buenos Aires y de su principalpoblación, los adolescentes de sectores populares. Aunque en los últimos años millones de adolescentes abandonaronestos espacios como consecuencia de la ampliación de la Internet hogareña, en sectores popularesmuchos adolescentes aún continúan asistiendo en busca de recreación lúdico-comunicativa, información eintegración social. La metodología utilizada consiste en 40 entrevistas en profundidad, observaciones participantesy análisis de contenido de perfiles de Facebook (n: 200. Entre los resultados, se destaca que lasprincipales prácticas de estos adolescentes son comunicativas y que estos espacios funcionan para ellos comoherramientas de alfabetización digital, sociabilidad entre pares e inclusión ciudadana.

  8. Metal hydride air conditioner

    Institute of Scientific and Technical Information of China (English)

    YANG; Ke; DU; Ping; LU; Man-qi

    2005-01-01

    The relationship among the hydrogen storage properties, cycling characteristics and thermal parameters of the metal hydride air conditioning systems was investigated. Based on a new alloy selection model, three pairs of hydrogen storage alloys, LaNi4.4 Mn0.26 Al0.34 / La0.6 Nd0.4 Ni4.8 Mn0.2 Cu0. 1, LaNi4.61Mn0. 26 Al0.13/La0.6 Nd0.4 Ni4.8 Mn0.2 Cu0. 1 and LaNi4.61 Mn0.26 Al0.13/La0.6 Y0.4 Ni4.8 Mn0. 2, were selected as the working materials for the metal hydride air conditioning system. Studies on the factors affecting the COP of the system showed that higher COP and available hydrogen content need the proper operating temperature and cycling time,large hydrogen storage capacity, flat plateau and small hysterisis of hydrogen alloys, proper original input hydrogen content and mass ratio of the pair of alloys. It also needs small conditioning system was established by using LaNi4.61 Mn0.26 Al0. 13/La0.6 Y0.4 Ni4.8 Mn0.2 alloys as the working materials, which showed that under the operating temperature of 180℃/40℃, a low temperature of 13℃ was reached, with COP =0.38 and Wnet =0.09 kW/kg.

  9. Development and characterization of La/B{sub 4}C multilayer systems as X-ray mirrors in the energy range 100-200 eV; Entwicklung und Charakterisierung von La/B{sub 4}C-Multischichtsystemen als Roentgenspiegel im Energiebereich 100-200 eV

    Energy Technology Data Exchange (ETDEWEB)

    Hendel, Stefan

    2009-01-15

    The main topics of this thesis are the development and characterization of La/B{sub 4}C multilayer systems. For this these materials were evaluated and characterized for the applied electron-beam evaporation. For the monitoring of the evaporation process two separate in-situ layer thicknesses were available. For periodic multilayer systems the X-ray reflectometry used for Mo/Si multilayers was accepted. Because of the change from Mo/Si on La/B{sub 4}C the driving of the evaporation process had to be material-conditionedly further developed and optimized. For the fabrication of aperiodic La/B{sub 4}C multilayer systems additionally an in-situ ellipsometer was taken into operation. Furthermore a decreasement of the interface roughnesses and by this following increasement of the reflectivities of La/B{sub 4}C multilayers by polishing of the single layers with accelerated ions during the fabrication shall be studied. The fabricated multilayers are characterized and evaluated concerning roughnesses, reflectivities, ans spectral band width. [German] Im Mittelpunkt dieser Arbeit stehen die Entwicklung und Charakterisierung von La/B{sub 4}C-Multischichtsystemen. Dazu wurden diese Materialien fuer die verwendete Elektronenstrahlverdampfung evaluiert und charakterisiert. Fuer die Ueberwachung des Aufdampfprozesses standen zwei separate In-situ Schichtdickenkontrollen zur Verfuegung. Fuer periodische Multischichtsysteme wurde die fuer Mo/Si-Multischichten genutzte Roentgenreflektometrie uebernommen. Aufgrund des Wechsels von Mo/Si auf La/B{sub 4}C musste materialbedingt die Steuerung des Verdampfungsprozesses weiterentwickelt und optimiert werden. Fuer die Herstellung aperiodischer La/B{sub 4}C-Multischichtsysteme wurde zusaetzlich ein In-situ Ellipsometer in Betrieb genommen. Des Weiteren soll eine Senkung der Grenzflaechenrauigkeiten und damit einhergehende Erhoehung der Reflektivitaeten von La/B{sub 4}C-Multischichten durch das Polieren mit beschleunigten Ionen der

  10. Developing a model system for simulation of changes induced by more effective circular flow concepts in industry and energy management. Systems technology and economic modelling aspects shown with the example of the materials flow in the paper industry; Entwicklung eines Modellsystems zur Simulation der energiewirtschaftlichen und strukturellen Veraenderungen einer verstaerkten Kreislaufwirtschaft. Systemtechnische und oekonomische Modellierung am Beispiel des Stoffstroms 'Papier'

    Energy Technology Data Exchange (ETDEWEB)

    Nathani, C.

    2000-02-01

    The impacts of a long-term change from our present industrial society to an economy based on circular flow concepts approaching the characteristics of the concept of sustainable development have to be taken into account in macroeconomic modelling as well, or else there is no appropriate basis for examination and assessment of the effects of various resource management policy options on the economy. One possible methodological approach is to link single, process-oriented models of sectors of the industry with input-output models and macroeconomic models. This study presents an approach using as an example the pulp and paper industry of Germany, covering the period from 1995 until 2020. The results are found to improve the methodological perspective between the process models and the MIS model of the family of IKARUS models and also offer an additional advantage in that they may serve as a data source for other input-output models and macroeconomic modelling. (orig./CB) [German] Diese Einfluesse eines langfristigen Wandels von einer heutigen Industriegesellschaft zu einer Kreislaufwirtschaft mit Merkmalen einer nachhaltigen Entwicklung muessen sich auch in den Strukturen makrooekonomischer Modelle wiederfinden, um die Auswirkungen verschiedener ressourcenpolitischer Optionen auf die Wirtschaft angemessen pruefen zu koennen. Ein methodischer Weg zu dieser Aufgabe ist die Verknuepfung einzelner prozessorientierter Branchenmodelle mit Input-Output-Modellen und makrooekonomischen Modellen. Der vorliegende Bericht will hierzu einen Baustein am Beispiel der Zellstoff- und Papierindustrie fuer die Bundesrepublik Deutschland fuer die Zeitperiode 1995-2020 beitragen. Diese Ergebnisse verbessern nicht nur die methodische Perspektive zwischen den Prozessmodellen und dem MIS-Modell der IKARUS-Modellfamilie, sondern koennen als Erfahrungs- und Datenquelle fuer andere Input-Output-Modelle und makrooekonomische Modelle genutzt werden. (orig.)

  11. Development of biodegradable materials on the basis of renewable materials, starch, vegetable oils and natural fibres. Part 3: Derivation of starch of DS = 0.3 to 2.5. Final report; Entwicklung biologisch abbaubarer Werkstoffe auf der Basis nachwachsender Rohstoffe, Staerke, Pflanzenoel und Naturfasern. T. 3: Derivatisierung der Staerke von DS=0,3 bis 2,5. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Engelmann, G.; Lang, J.; Rafler, G.

    2002-01-01

    The last few years have seen rapid developments in the field of starch use in the polymer sector. Destructured starch, with suitable modifiers, can be processed into foils and formed parts by thermoplastic methods. Their properties during processing and use differ from those of conventional plastics, however. The main reason for this is the structural hydrophilia of starch and starch products, which reduces their technical applications. In this project, the fundamentals for starch-based materials with better material characteristics are to be developed in order to improve the chances of these economically and ecologically attractive materials on the market and enhance their range of applications. [German] In den letzten Jahren haben die Entwicklungen auf dem Gebiet des Staerkeeinsatzes im Polymersektor erhebliche Fortschritte gemacht. Destrukturierte Staerken lassen sich heute unter Zusatz geeigneter Modifikatoren nach bekannten Formgebungsverfahren thermoplastisch zu Folien und Formkoerpern verarbeiten. Das Eigenschaftsprofil der staerkebasierenden Materialien entspricht jedoch nicht demjenigen konventioneller Kunststoffe. Dies betrifft sowohl die Gebrauchs- als auch die Verarbeitungseigenschaften. Wesentliche Ursache dieser fuer viele Applikationen unzureichenden Materialeigenschaften ist die strukturbedingte Hydrophilie von Staerken und daraus hergestellten Produkten. Diese Hydrophilie fuehrt dann zu einer hohen Feuchtigkeitsempfindlichkeit von staerkebasierenden Materialien, die ihre Einsatzmoeglichkeiten in technischen Bereichen erheblich einschraenkt. In dem durch die Fachagentur Nachwachsende Rohstoffe gefoerderten Verbundprojekt ''Entwicklung bioabbaubarer Werkstoffe auf der Basis nachwachsender Rohstoffe, Staerke und Pflanzenoel'' sollen deshalb Grundlagen fuer staerkebasierende Werkstoffe bzw. Werkstoffkomponenten mit deutlich verbesserten Materialeigenschaften erarbeitet werden, um die Chancen dieser wirtschaftlich und oekologisch

  12. Development of a new thin film technology for PV systems: Open-system CCSVT process for production of ZnSe/CuGaSe{sub 2} hetero diodes. Final report; Entwicklung einer neuen Duennschichttechnologie fuer die Photovoltaik: CCSVT-Verfahren im offenen System zur Herstellung von ZnSe/CuGaSe{sub 2}-Heterodioden. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Lux-Steiner, M.C.; Jaeger-Waldau, A.

    2000-07-01

    A new technology for fast, large-surface deposition of high-quality semiconducting thin films for PV systems. The new technology, CSVT (close-space vapour transport), is based on a combination of VPE (vapour phase epitaxy) in open systems and CVT (chemical vapour phase transport) in closed systems. The two-source CVD experiments with two different transport gases, i.e. Cu{sub 2}Se with iodine and Ga{sub 2}Se{sub 3} with HCl, enabled controlled variation of the Cu:Ga ratio in the gaseous phase. The solar cells produced had efficiencies of more than 4%. The best solar cell produced had an efficiency of 4.8% and an open terminal voltage of 863 mV. [German] Ziel des Vorhabens war die Entwicklung einer neuen Technologie zur schnellen, grossflaechigen Abscheidung von qualitativ hochstehenden, halbleitenden Duennschichten fuer die Photovoltaik. Das Konzept des neuen Abscheideverfahrens, CSVT (close-space vapour transport) im offenen System, basiert auf einer Kombination der etablierten Methoden VPE (vapour phase epitaxy) im offenen und CVT (chemical vapour phase transport) im geschlossenen System. Die 2-Quellen-CVD-Experimente mit den zwei unterschiedlichen Transportgasen (Cu{sub 2}Se mit Iod; Ga{sub 2}Se{sub 3} mit HCl) ermoeglichten die kontrollierte Variation des Cu:Ga=Verhaeltnisses in der Gasphase. Bisher konnten so Solarzellen mit Wirkungsgraden ueber 4% hergestellt werden, wobei bei der bisher besten Solarzelle ein Wirkungsgrad von {eta}=4.8% und eine offene Klemmenspannung von V{sub oc}=863 mV erreicht wurde. (orig.)

  13. 77 FR 12524 - Approval and Promulgation of Air Quality Implementation Plans; Indiana; Lead Ambient Air Quality...

    Science.gov (United States)

    2012-03-01

    ... Ambient Air Quality Standards AGENCY: Environmental Protection Agency (EPA). ACTION: Proposed rule...) under the Clean Air Act (CAA). This submittal incorporates the National Ambient Air Quality...

  14. Air Leakage Rates in Typical Air Barrier Assemblies

    Energy Technology Data Exchange (ETDEWEB)

    Hun, Diana E. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Atchley, Jerald Allen [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Childs, Phillip W. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2016-11-01

    Estimates for 2010 indicate that infiltration in residential buildings was responsible for 2.85 quads of energy (DOE 2014), which is about 3% of the total energy consumed in the US. One of the mechanisms being implemented to reduce this energy penalty is the use of air barriers as part of the building envelope. These technologies decrease airflow through major leakage sites such as oriented strand board (OSB) joints, and gaps around penetrations (e.g., windows, doors, pipes, electrical outlets) as indicated by Hun et al. (2014). However, most air barrier materials do not properly address leakage spots such as wall-to-roof joints and wall-to-foundation joints because these are difficult to seal, and because air barrier manufacturers usually do not provide adequate instructions for these locations. The present study focuses on characterizing typical air leakage sites in wall assemblies with air barrier materials.

  15. Air Pollution Control, Part I.

    Science.gov (United States)

    Strauss, Werner, Ed.

    Authoritative reviews in seven areas of current importance in air pollution control are supplied in this volume, the first of a two-part set. Titles contained in this book are: "Dispersion of Pollutants Emitted into the Atmosphere,""The Formation and Control of Oxides of Nitrogen in Air Pollution,""The Control of Sulfur Emissions from Combustion…

  16. Screening in humid air plasmas

    Science.gov (United States)

    Filippov, Anatoly; Derbenev, Ivan; Dyatko, Nikolay; Kurkin, Sergey

    2016-09-01

    Low temperature air plasmas containing H2O molecules are of high importance for atmospheric phenomena, climate control, biomedical applications, surface processing, and purification of air and water. Humid air plasma created by an external ionization source is a good model of the troposphere where ions are produced by the galactic cosmic rays and decay products of air and soil radioactive elements such as Rn222. The present paper is devoted to study the ionic composition and the screening in an ionized humid air at atmospheric pressure and room temperature. The ionization rate is varied in the range of 101 -1018 cm-3s-1. The humid air with 0 - 1 . 5 % water admixture that corresponds to the relative humidity of 0 - 67 % at the air temperature equal to 20°C is considered. The ionic composition is determined on the analysis of more than a hundred processes. The system of 41 non-steady state particle number balance equations is solved using the 4th order Runge-Kutta method. The screening of dust particle charge in the ionized humid air are studied within the diffusion-drift approach. The screening constants are well approximated by the inverse Debye length and characteristic lengths of recombination and attachment processes. This work was supported by the Russian Science Foundation, Project No. 16-12-10424.

  17. Ozone as an air pollutant

    DEFF Research Database (Denmark)

    Berg, Rolf W.

    1996-01-01

    A Danish new book on ozone as an air pollutant has been reviewed. The Book is "Ozon som luftforurening" by Jes Fenger, Published by "Danmarks Miljøundersøgelser, 1995.......A Danish new book on ozone as an air pollutant has been reviewed. The Book is "Ozon som luftforurening" by Jes Fenger, Published by "Danmarks Miljøundersøgelser, 1995....

  18. Human preference for air movement

    DEFF Research Database (Denmark)

    Toftum, Jørn; Melikov, Arsen Krikor; Tynel, A.;

    2002-01-01

    Human preference for air movement was studied at slightly cool, neutral, and slightly warm overall thermal sensations and at temperatures ranging from 18 deg.C to 28 deg.C. Air movement preference depended on both thermal sensation and temperature, but large inter-individual differences existed...

  19. A Breath of Fresh Air

    Science.gov (United States)

    Belew, Rachel

    2011-01-01

    One of the most important aspects of a healthy school--and one that, unfortunately, often falls by the wayside--is indoor air quality. The U.S. Government Accountability Office estimates that more than 15,000 schools nationwide report suffering from poor indoor air quality. According to the U.S. Environmental Protection Agency, schools with poor…

  20. Mind Your Indoor Air Quality

    Science.gov (United States)

    Mak, Lily

    2012-01-01

    When it comes to excelling in the classroom, it turns out the air students are breathing is just as important as the lessons they are learning. Studies show poor indoor air quality (IAQ) can lessen the comfort of students as well as staff--affecting concentration, attendance and student performance. It can even lead to lower IQs. What's more, poor…

  1. Vehicles and Particulate Air Pollution

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    The current scene relating to particles and vehicular emissions in UK is reviewed. The active research topics are health effects of particles, particle size and composition, modeling the fate of particles and assessing individual exposure. There is a National Air Quality Strategy combined with local air quality management which includes monitoring and assessment, dispersion modeling and development of management plans.

  2. Cylindrical air flow reversal barrier

    Energy Technology Data Exchange (ETDEWEB)

    Woznica, C.; Rodziewicz, M.

    1988-06-01

    Describes an innovative design introduced in the ZMP mine in Zory for quick reversal of ventilation air flow. Geologic mining conditions at the 705 m deep horizon, where the barrier was built, are described. According to the design used until now, a reversal system consisted of safety barriers, ventilation air locks, a ventilation bridge and stopping needed in case of a fire when air flow direction must be reversed. Nine air locks and an expensive concrete ventilation bridge were needed and the air locks had to be operated at 8 points of the region to effect reversal. The new design consists of a 2-storey cylindrical barrier which also fulfills the function of a ventilation bridge. It can be manually or remotely operated by a mechanical or pneumatic system. Tests showed that the new barrier permits immediate air flow reversal while retaining 60% of the original air, which is important in the case of fire and methane hazards. It permits improved seam panelling and splitting of pillars and brings an economy of about 40 million zlotys in construction cost. Design and operation of the barrier is illustrated and ventilation air circulation is explained. 7 figs.

  3. Protective supplied breathing air garment

    Science.gov (United States)

    Childers, Edward L.; von Hortenau, Erik F.

    1984-07-10

    A breathing air garment for isolating a wearer from hostile environments containing toxins or irritants includes a suit and a separate head protective enclosure or hood engaging a suit collar in sealing attachment. The hood and suit collar are cylindrically shaped and dimensioned to enable the wearer to withdraw his hands from the suit sleeves to perform manual tasks within the hood interior. Breathing air is supplied from an external air line with an air delivery hose attached to the hood interior. The hose feeds air into an annular halo-like fiber-filled plenum having spaced discharge orifices attached to the hood top wall. A plurality of air exhaust/check valves located at the suit extremities cooperate with the hood air delivery system to provide a cooling flow of circulating air from the hood throughout the suit interior. A suit entry seal provided on the suit rear torso panel permits access into the suit and is sealed with an adhesive sealing flap.

  4. Effects of long-term exposure to raod traffic imissions on the pathogenesis of diseases of the skin and respiratory tract in children; Auswirkungen langfristiger Expositionen gegenueber Strassenverkehrsimissionen auf die Entwicklung von Haut- und Atemwegserkrankungen bei Kindern

    Energy Technology Data Exchange (ETDEWEB)

    Ising, H. [Umweltbundesamt, Berlin (Germany); Lange-Asschenfeldt, H. [Bundesministerium fuer Gesundheit, Berlin (Germany); Lieber, G.F.; Weinhold, H.; Eilts, M.

    2002-10-01

    The pathogenesis of allergies can be stimulated by adjuvant effects, i.e. air pollutants such as NO{sub x} and particles from diesel engines and also noise - the latter especially during the night. During sleep, noise signals that are associated with danger (e.g. noise from lorries) can potentially trigger stress reactions even if the noise level is low. Higher cortisol levels in the first half of the night seem to have an important role in this. In a blind interview study, the combined effects of chronic exposure to traffic-related air pollution and noise upon the risk of allergic skin and respiratory diseases in children were studied. All children between 5 and 12 years of age who had consulted one of two of the participating pediatricians were included in the study. The paediatricians' diagnoses for 400 children were analysed together with their parents' answers to questions on the density of road traffic in the streets where they live and several confounding factors. Multiple regression analyses revealed relative risks of asthma, chronic bronchitis and neurodermitis that rose significantly with increasingly heavy traffic. A comparison with corresponding results reported in the literature for air pollution alone showed that traffic noise during the night might have an enhancing (adjuvant) effect in the pathogenesis of these diseases. (orig.) [German] Die Entstehung von Allergien kann durch adjuvante Effekte - z.B. Immissionen aus dem Verkehrsbereich - gefoerdert werden. Zu solchen Immissionen zaehlen gas- und partikelfoermige Schadstoffe wie Stickoxide und Dieselruss sowie Laerm, insbesondere in der Nacht. Waehrend des Schlafs koennen Geraeusche, die mit Gefahren assoziiert sind (z.B. Lkw-Geraeusche) auch bei niedrigen Pegeln Stressreaktionen ausloesen. Kortisolerhoehungen in der ersten Haelfte der Nacht scheinen dabei eine wichtige Rolle zu spielen. In einer 'einfach-blind' durchgefuehrten Befragungsstudie wurden langzeitige Auswirkungen

  5. `Energy storage` using liquid air

    Energy Technology Data Exchange (ETDEWEB)

    Brown, K.C. [Melbourne Univ., Parkville, VIC (Australia)

    1995-12-31

    Storage of liquid air is relatively simple, and the work needed to manufacture it is, at least in principle, entirely recoverable. Available energy densities seem excellent. Unfortunately the technology to use liquid air for energy storage has never been developed. The Phillips-Stirling and McMahon and Gifford air liquefiers, and a previous proposal by Smith, provide leads as to the form which the technology might take. This paper introduces the concept of `Exergy`, and how it can be utilized in the storage of liquid air. It concludes that liquid air seems to present some real advantages over batteries for energy storage. The development presents a challenge. Since battery technology is not making the huge advances promised, it could be time to take a more serious look at this alternative. (author). 4 figs., 14 refs.

  6. Picosecond laser filamentation in air

    Science.gov (United States)

    Schmitt-Sody, Andreas; Kurz, Heiko G.; Bergé, Luc; Skupin, Stefan; Polynkin, Pavel

    2016-09-01

    The propagation of intense picosecond laser pulses in air in the presence of strong nonlinear self-action effects and air ionization is investigated experimentally and numerically. The model used for numerical analysis is based on the nonlinear propagator for the optical field coupled to the rate equations for the production of various ionic species and plasma temperature. Our results show that the phenomenon of plasma-driven intensity clamping, which has been paramount in femtosecond laser filamentation, holds for picosecond pulses. Furthermore, the temporal pulse distortions in the picosecond regime are limited and the pulse fluence is also clamped. In focused propagation geometry, a unique feature of picosecond filamentation is the production of a broad, fully ionized air channel, continuous both longitudinally and transversely, which may be instrumental for many applications including laser-guided electrical breakdown of air, channeling microwave beams and air lasing.

  7. Lithium-Air Cell Development

    Science.gov (United States)

    Reid, Concha M.; Dobley, Arthur; Seymour, Frasier W.

    2014-01-01

    Lithium-air (Li-air) primary batteries have a theoretical specific capacity of 11,400 Wh/kg, the highest of any common metal-air system. NASA is developing Li-air technology for a Mobile Oxygen Concentrator for Spacecraft Emergencies, an application which requires an extremely lightweight primary battery that can discharge over 24 hours continuously. Several vendors were funded through the NASA SBIR program to develop Li-air technology to fulfill the requirements of this application. New catalysts and carbon cathode structures were developed to enhance the oxygen reduction reaction and increase surface area to improve cell performance. Techniques to stabilize the lithium metal anode surface were explored. Experimental results for prototype laboratory cells are given. Projections are made for the performance of hypothetical cells constructed from the materials that were developed.

  8. Atmospheric Chemistry and Air Pollution

    Directory of Open Access Journals (Sweden)

    Jeffrey S. Gaffney

    2003-01-01

    Full Text Available Atmospheric chemistry is an important discipline for understanding air pollution and its impacts. This mini-review gives a brief history of air pollution and presents an overview of some of the basic photochemistry involved in the production of ozone and other oxidants in the atmosphere. Urban air quality issues are reviewed with a specific focus on ozone and other oxidants, primary and secondary aerosols, alternative fuels, and the potential for chlorine releases to amplify oxidant chemistry in industrial areas. Regional air pollution issues such as acid rain, long-range transport of aerosols and visibility loss, and the connections of aerosols to ozone and peroxyacetyl nitrate chemistry are examined. Finally, the potential impacts of air pollutants on the global-scale radiative balances of gases and aerosols are discussed briefly.

  9. Population Dynamics and Air Pollution

    DEFF Research Database (Denmark)

    Flachs, Esben Meulengracht; Sørensen, Jan; Bønløkke, Jacob

    2013-01-01

    Objective. To explore how three different assumptions on demographics affect the health impact of Danish emitted air pollution in Denmark from 2005 to 2030, with health impact modeled from 2005 to 2050. Methods. Modeled air pollution from Danish sources was used as exposure in a newly developed......) a static year 2005 population, (2) morbidity and mortality fixed at the year 2005 level, or (3) an expected development. Results. The health impact of air pollution was estimated at 672,000, 290,000, and 280,000 lost life years depending on demographic assumptions and the corresponding social costs at 430.......4 M€, 317.5 M€, and 261.6 M€ through the modeled years 2005–2050. Conclusion. The modeled health impact of air pollution differed widely with the demographic assumptions, and thus demographics and assumptions on demographics played a key role in making health impact assessments on air pollution....

  10. 22 CFR 228.22 - Air transportation.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Air transportation. 228.22 Section 228.22... for USAID Financing § 228.22 Air transportation. (a) The eligibility of air transportation is... U.S. flag air carriers for all international air travel and transportation, unless such service...

  11. Air Safety Spinoffs

    Science.gov (United States)

    1977-01-01

    Weight saving-even a matter of a few pounds-is an important consideration in airplane design and . construction. Boeing saved 200 pounds simply by substituting a new type of compressed gas cylinder on their 747 commercial airliners. For quickly evacuating passengers in the event of a ground emergency the 747 escape chutes allow ' passengers to slide to safety from the two-story height of the cabin deck. The chutes pop out of exitways and are automatically inflated in seconds by compressed air stored in pressure vessels. Boeing's weight saving resulted from a recent changeover to a new type of pressure vessel built by Structural Composites Industries Inc. of Azusa, Cal. The company employs technology originally developed for rocket motor casings; the cylinders are constructed by winding fibers around an aluminum liner. This technique offers high strength for very low weight-in this case 60 percent less than the pressure vessels earlier used on the 747. Another contribution to improved air safety is an underwater locator device. Called the "Pinger," it uses sonar techniques to locate aircraft crashed in water-or, more specifically, to recover the flight recorder aboard the airplane. Its recovery provides clues as to what caused the accident and suggests measures to prevent similar future occurrences. Until recently, there was no way to recover flight recorders aboard aircraft lost in water crashes. The Pinger, now serving 95 percent of the airline industry, provides an answer. Key element of the Pinger system is a small, battery-powered transmitter, or homing beacon, included as part of the recorder package. For as long as 30 days, the transmitter sends out an acoustic signal from water depths up to 20,000 feet. The other element of the system is a receiver, used by search crews to home in on the transmitter's signal. Originating as a U.S. Navy project, this device was refined and further developed by NASA's Langley Research Center to retrieve submerged nose cones

  12. Development of high temperature resistant ceramic matrix composites based on SiC- and novel SiBNC-fibres; Entwicklung hochtemperaturbestaendiger keramischer Faserverbundwerkstoffe auf der Basis von SiC- und neuartigen SiBNC-Fasern

    Energy Technology Data Exchange (ETDEWEB)

    Daenicke, Enrico

    2014-10-01

    Novel ceramic fibres in the quaternary system Si-B-C-N exhibit excellent high temperature stability and creep resistance. In th is work it was investigated, to what extent these outstanding properties of SiBNC-fibres can be transferred into ceramic matrix composites (CMC) in comparison to commercial silicon carbide (SiC) fibres. For the CMC development the liquid silicon infiltration (LSI) as well as the polymer infiltration and pyrolysis process (PIP) was applied. Extensive correlations between fibre properties, fibre coating (without, pyrolytic carbon, lanthanum phosphate), process parameters of the CMC manufacturing method and the mechanical and microstructural properties of the CMC before and after exposure to air could be established. Hence, the potential of novel CMCs can be assessed and application fields can be derived.

  13. Air Leakage and Air Transfer Between Garage and Living Space

    Energy Technology Data Exchange (ETDEWEB)

    Rudd, A.

    2014-09-01

    This research project focused on evaluation of air transfer between the garage and living space in a single-family detached home constructed by a production homebuilder in compliance with the 2009 International Residential Code and the 2009 International Energy Conservation Code. The project gathered important information about the performance of whole-building ventilation systems and garage ventilation systems as they relate to minimizing flow of contaminated air from garage to living space. A series of 25 multi-point fan pressurization tests and additional zone pressure diagnostic testing characterized the garage and house air leakage, the garage-to-house air leakage, and garage and house pressure relationships to each other and to outdoors using automated fan pressurization and pressure monitoring techniques. While the relative characteristics of this house may not represent the entire population of new construction configurations and air tightness levels (house and garage) throughout the country, the technical approach was conservative and should reasonably extend the usefulness of the results to a large spectrum of house configurations from this set of parametric tests in this one house. Based on the results of this testing, the two-step garage-to-house air leakage test protocol described above is recommended where whole-house exhaust ventilation is employed. For houses employing whole-house supply ventilation (positive pressure) or balanced ventilation (same pressure effect as the Baseline condition), adherence to the EPA Indoor airPLUS house-to-garage air sealing requirements should be sufficient to expect little to no garage-to-house air transfer.

  14. 78 FR 12267 - Revision of Air Quality Implementation Plan; California; Placer County Air Pollution Control...

    Science.gov (United States)

    2013-02-22

    ... Pollution Control District and Feather River Air Quality Management District; Stationary Source Permits... County Air Pollution Control District (PCAPCD) and Feather River Air Quality Management District (FRAQMD... of Subjects in 40 CFR Part 52 Environmental protection, Air pollution control, Incorporation...

  15. Community Multi-scale Air Quality (CMAQ) Modeling System for Air Quality Management

    Science.gov (United States)

    CMAQ simultaneously models multiple air pollutants including ozone, particulate matter and a variety of air toxics to help air quality managers determine the best air quality management scenarios for their communities, regions and states.

  16. [Air quality control systems: heating, ventilating, and air conditioning (HVAC)].

    Science.gov (United States)

    Bellucci Sessa, R; Riccio, G

    2004-01-01

    After a brief illustration of the principal layout schemes of Heating, Ventilating, and Air Conditioning (HVAC), the first part of this paper summarizes the standards, both voluntary and compulsory, regulating HVAC facilities design and installation with regard to the question of Indoor Air Quality (IAQ). The paper then examines the problem of ventilation systems maintenance and the essential hygienistic requirements in whose absence HVAC facilities may become a risk factor for people working or living in the building. Lastly, the paper deals with HVAC design strategies and methods, which aim not only to satisfy comfort and air quality requirements, but also to ensure easy and effective maintenance procedures.

  17. Radioxenon spiked air.

    Science.gov (United States)

    Watrous, Matthew G; Delmore, James E; Hague, Robert K; Houghton, Tracy P; Jenson, Douglas D; Mann, Nick R

    2015-12-01

    Four of the radioactive xenon isotopes ((131m)Xe, (133m)Xe, (133)Xe and (135)Xe) with half-lives ranging from 9 h to 12 days are produced from nuclear fission and can be detected from days to weeks following their production and release. Being inert gases, they are readily transported through the atmosphere. Sources for release of radioactive xenon isotopes include operating nuclear reactors via leaks in fuel rods, medical isotope production facilities, and nuclear weapons' detonations. They are not normally released from fuel reprocessing due to the short half-lives. The Comprehensive Nuclear-Test-Ban Treaty has led to creation of the International Monitoring System. The International Monitoring System, when fully implemented, will consist of one component with 40 stations monitoring radioactive xenon around the globe. Monitoring these radioactive xenon isotopes is important to the Comprehensive Nuclear-Test-Ban Treaty in determining whether a seismically detected event is or is not a nuclear detonation. A variety of radioactive xenon quality control check standards, quantitatively spiked into various gas matrices, could be used to demonstrate that these stations are operating on the same basis in order to bolster defensibility of data across the International Monitoring System. This paper focuses on Idaho National Laboratory's capability to produce three of the xenon isotopes in pure form and the use of the four xenon isotopes in various combinations to produce radioactive xenon spiked air samples that could be subsequently distributed to participating facilities.

  18. Airing Out Anthrax

    Science.gov (United States)

    2002-01-01

    The AiroCide TiO2 is an air-purifier that kills 93.3 percent of airborne pathogens that pass through it, including Bacillus anthraci, more commonly known as anthrax. It is essentially a spinoff of KES Science & Technology, Inc.'s Bio-KES system, a highly effective device used by the produce industry for ethylene gas removal to aid in preserving the freshness of fruits, vegetables, and flowers. The TiO2-based ethylene removal technology that is incorporated into the company's AiroCide TiO2 and Bio-KES products was first integrated into a pair of plant-growth chambers known as ASTROCULTURE(TM) and ADVANCED ASTROCULTURE(TM). Both chambers have housed commercial plant growth experiments in space on either the Space Shuttle or the International Space Station. The AiroCide TiO2 also has a proven record of destroying 98 percent of other airborne pathogens, such as microscopic dust mites, molds, and fungi. Moreover, the device is a verified killer of Influenza A (flu), E. coli, Staphylococcus aureas, Streptococcus pyogenes, and Mycoplasma pneumoniae, among many other harmful viruses.

  19. Breathe the air!

    CERN Multimedia

    2003-01-01

    Feeling a bit cooped up in your office? Want to share your interest in science and technology with others but your computer's heard it all before and your colleagues won't even listen anymore? Then here's the answer - come and get some fresh air with the Education and Communication Group. The Visits Service and the Press Office offer you the opportunity to come into contact with CERN visitors. - Be a guide! In becoming a guide you get the opportunity to introduce the Laboratory to vast array of visitors of all nationalities and ages and communicate to them your passion for science and technology. You can get involved as a CERN guide on various levels - giving presentations and tours of the Laboratory, but also leading a «Drôle de Physique» workshop and giving tours of Microcosm. Guides receive training. If you're interested, take a look at the Guides Homepage where all the relevant information and formalities are explained: http://www.cern.ch/guides See also the article in the Bulletin n°25/2002. - Fa...

  20. Solar air systems - built examples

    Energy Technology Data Exchange (ETDEWEB)

    Hastings, S.R. [ed.] [Solararchitektur, ETH-Hoenggerberg, Zurich (Switzerland)

    1999-07-01

    Active solar systems for air heating are a straightforward yet efficient way of using solar energy to heat spaces, ventilation air and even domestic hot water. They offer important advantages over solar water systems, improved comfort and fuller use of solar gains compared with many passive solar systems and are a natural fit with mechanically ventilated buildings. Solar air systems become more economical when they serve multiple functions such as providing a sound barrier, a weatherskin, sunshading, inducing cooling and even electricity supply (hybrid PV/air). Thirty-five different buildings with successfully installed exemplary solar air systems in climates ranging from Canada and Norway to Italy are described and documented. The building types cover single family houses, apartment buildings, schools, sports halls, and industrial commercial buildings with six different configurations of solar air systems used. Each building is described over several pages, with plans, performance details and illustrations provided. An accompanying product catalogue identifies suppliers of the necessary equipment and offers advice on product selection. As well as giving architects and designers invaluable advice based on the experience from these projects, this book also illustrates clearly the wide range of applications and the many benefits of solar air systems. (author)

  1. Air Sensor Toolbox: Resources and Funding

    Science.gov (United States)

    EPA’s Air Sensor Toolbox provides information and guidance on new low-cost compact technologies for measuring air quality. It provides information to help citizens more effectively and accurately collect air quality data in their community.

  2. Profit goal set for airBaltic

    Index Scriptorium Estoniae

    2011-01-01

    Latvijas Krajbanka president arvab, et airBalticu olukorra stabiliseerimiseks läheb vähemalt aasta. AirBalticu senine juht Bertolt Flick võib hakata uue Vilniuse lennukompanii investoriks. AirBalticu uuest juhatusest

  3. Historical Ambient Air Quality Data Inventory

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Historical Ambient Air Quality Data Inventory contains measured and estimated data on ambient air pollution for use in assessing air quality, assisting in...

  4. National Air Toxic Assessments (NATA) Results

    Data.gov (United States)

    U.S. Environmental Protection Agency — The National Air Toxics Assessment was conducted by EPA in 2002 to assess air toxics emissions in order to identify and prioritize air toxics, emission source types...

  5. High Altitude Clear Air Turbulence Project

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Air Force Flight Dynamics Laboratory conducted the High Altitude Clear Air Turbulence Project in the mid 1960s with the intention of better understanding air...

  6. Transportation, Air Pollution, and Climate Change

    Science.gov (United States)

    ... Share Facebook Twitter Google+ Pinterest Contact Us Transportation, Air Pollution, and Climate Change Accomplishments & Successes View successes from ... reduce carbon pollution. Carbon pollution from transportation Other Air Pollution Learn about smog, soot, ozone, and other air ...

  7. Air Pollution, Climate, and Heart Disease

    Science.gov (United States)

    ... of the American Heart Association Cardiology Patient Page Air Pollution, Climate, and Heart Disease Diane R. Gold , Jonathan ... http://www.epa.gov/greenheart/ . 7 What Is Air Pollution? Air pollution is a mixture of gases and ...

  8. INEEL AIR MODELING PROTOCOL ext

    Energy Technology Data Exchange (ETDEWEB)

    C. S. Staley; M. L. Abbott; P. D. Ritter

    2004-12-01

    Various laws stemming from the Clean Air Act of 1970 and the Clean Air Act amendments of 1990 require air emissions modeling. Modeling is used to ensure that air emissions from new projects and from modifications to existing facilities do not exceed certain standards. For radionuclides, any new airborne release must be modeled to show that downwind receptors do not receive exposures exceeding the dose limits and to determine the requirements for emissions monitoring. For criteria and toxic pollutants, emissions usually must first exceed threshold values before modeling of downwind concentrations is required. This document was prepared to provide guidance for performing environmental compliance-driven air modeling of emissions from Idaho National Engineering and Environmental Laboratory facilities. This document assumes that the user has experience in air modeling and dose and risk assessment. It is not intended to be a "cookbook," nor should all recommendations herein be construed as requirements. However, there are certain procedures that are required by law, and these are pointed out. It is also important to understand that air emissions modeling is a constantly evolving process. This document should, therefore, be reviewed periodically and revised as needed. The document is divided into two parts. Part A is the protocol for radiological assessments, and Part B is for nonradiological assessments. This document is an update of and supersedes document INEEL/INT-98-00236, Rev. 0, INEEL Air Modeling Protocol. This updated document incorporates changes in some of the rules, procedures, and air modeling codes that have occurred since the protocol was first published in 1998.

  9. Korean Air Excellence in Flight

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    @@ Korean Air with a fleet of 119 aircraft, is one of the world's top 20 airlines, and oper-ates almost 400 flights everyday to 90 cities in 33 countries. The airline has about 50 flights per week between the US and Asia from nine US gateways: New York, Los Angeles, Washington,Chicago, Dallas, San Francisco, Atlanta, Anchorage and Honolulu.The carrier is a founding member of SkyTeam, the global airline alliance partnering AeroMexico, Air France, Alitalia, CSA Czech Airlines, Continental Airlines, Delta Air Lines, KLM and Northwest Airlines to provide customers with extensive worldwide destina-tions, flights and services.

  10. Steerable percussion air drilling system

    Energy Technology Data Exchange (ETDEWEB)

    Bui, H.D.; Gray, M.A.; Oliver, M.S.

    1995-07-01

    In the Steerable Percussion Air Drilling System (SPADS), air percussion is used to drill directionally in hard formations. Compared to mud or air powered PDM motors, SPADS offers directional drilling at high penetration rate, reduced mud costs, negligible formation damage, and immediate indication of hole productivity. Field tests turned up problems ranging from tool design to operation procedures; remedies were developed. There is an optimum WOB (weight on bit) at which torque is reasonably low. The hammer was tested at three different line pressures (200, 300, 350 psig) at optimum WOB in granite, limestone, and sandstone.

  11. Air Parity: Re-Discovering Contested Air Operations

    Science.gov (United States)

    2016-06-01

    maritime theories to war fighting strategy in the air domain, specific to the air control spectrum. The author assesses the importance of translating...effort to accomplish strategic 11 National Security Strategy , 12. 12 Office of the Secretary of...Defense, Sustaining U.S. Global Leadership: Priorities for 21st Century Defense (2012), 4. 13 Office of the Chairman, Joint Chiefs of Staff, The

  12. Tandil, Buenos Aires, Argentina

    Directory of Open Access Journals (Sweden)

    María L. Bakker

    2006-01-01

    Full Text Available Se coleccionaron hojas maduras de ejemplares adultos de Populus alba, Populus deltoides, Robinia pseudoacacia, Ulmus pumila y Fraxinus americana del Campus Universitario, Tandil, Buenos Aires, Argentina (37° 19’S, 59° 08’O en febrero de 2004. La cera cuticular fue extraída, purificada, y el contenido y proporción relativa de n-alcanos de número impar de carbonos (C23C35 fue cuantificado mediante cromatografía gas-líquido capilar. La concentración total de n-alcanos (mg/kg MS fue P. alba (6935 > Robinia (1571 > P. deltoides (1379 > Ulmus (880 > Fraxinus (467. Los n-alcanos más abundantes en todas las especies fueron C27 y C29 que constituyeron entre 10 y 51% y entre 35 y 76% del total respectivamente, excepto en Fraxinus donde los más abundantes fueron C29 y C31 que constituyeron el 31 y 49% del total respectivamente. P. alba y P. deltoides difirieron no solo en la concentración total de n-alcanos sino también en la proporción relativa de C27 y C29, siendo C29 el n-alcano más abundante en la segunda especie (76% igual que en Robinia (75%. La presencia de nalcanos de número par de carbonos no fue detectable o resultó muy baja en general en todas las especies, con excepción de C26, C28 y C30, este último se destacó particularmente en Fraxinus.

  13. Rooftop Unitary Air Conditioner with Integral Dedicated Outdoor Air System

    Energy Technology Data Exchange (ETDEWEB)

    Tiax Llc

    2006-02-28

    Energy use of rooftop and other unitary air-conditioners in commercial applications accounts for about 1 quad (10{sup 15} Btu) of primary energy use annually in the U.S. [Reference 7]. The realization that this cooling equipment accounts for the majority of commercial building cooled floorspace and the majority also of commercial building energy use has spurred development of improved-efficiency equipment as well as development of stricter standards addressing efficiency levels. Another key market driver affecting design of rooftop air-conditioning equipment has been concern regarding comfort and the control of humidity. Trends for increases in outdoor air ventilation rates in certain applications, and the increasing concern about indoor air quality problems associated with humidity levels and moisture in buildings points to a need for improved dehumidification capability in air-conditioning equipment of all types. In many cases addressing this issue exacerbates energy efficiency, and vice versa. The integrated dedicated outdoor air system configuration developed in this project addresses both energy and comfort/humidity issues.

  14. Air Leakage and Air Transfer Between Garage and Living Space

    Energy Technology Data Exchange (ETDEWEB)

    Rudd, Armin [Building Science Corporation, Westford, MA (United States)

    2014-09-01

    This research project focused on evaluation of air transfer between the garage and living space in a single-family detached home constructed by a production homebuilder in compliance with the 2009 International Residential Code and the 2009 International Energy Conservation Code. The project gathered important information about the performance of whole-building ventilation systems and garage ventilation systems as they relate to minimizing flow of contaminated air from garage to living space. A series of 25 multi-point fan pressurization tests and additional zone pressure diagnostic testing characterized the garage and house air leakage, the garage-to-house air leakage, and garage and house pressure relationships to each other and to outdoors using automated fan pressurization and pressure monitoring techniques. While the relative characteristics of this house may not represent the entire population of new construction configurations and air tightness levels (house and garage) throughout the country, the technical approach was conservative and should reasonably extend the usefulness of the results to a large spectrum of house configurations from this set of parametric tests in this one house. Based on the results of this testing, the two-step garage-to-house air leakage test protocol described above is recommended where whole-house exhaust ventilation is employed.

  15. Air Pollution: Current and Future Challenges

    Science.gov (United States)

    Despite the dramatic progress to date, air pollution continues to threaten Americans’ health and welfare. The main obstacles are climate change, conventional air pollution, and ozone layer depletion.

  16. Personal Air Vehicle Research Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The innovation is a low aspect ratio all-lifting configuration for personal air vehicles. This configuration uses an architecture fundamentally different from...

  17. A Martian Air Battery Project

    Data.gov (United States)

    National Aeronautics and Space Administration — This project will investigate an entirely new battery chemistry by developing A Martian Air Battery. Specifically the project will explore the concept of a Martian...

  18. Ozone - Current Air Quality Index

    Science.gov (United States)

    Local Air Quality Conditions Zip Code: State : My Current Location Forecast Current AQI AQI Loop More Maps AQI: Good (0 - ... About the Highest 5 Today's Forecasts Tomorrow's Forecasts Current AQI Metropolitan Baltimore, MD 101 Metropolitan Washington, DC ...

  19. 2011 NATA - Air Toxics Monitors

    Data.gov (United States)

    U.S. Environmental Protection Agency — This dataset includes annual (2005 - 2013) statistics of measured ambient air toxics concentrations (in micrograms per cubic meter) and associated risk estimates for...

  20. US Air Force Balloon Observations

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Worksheets containing pilot balloon data computed from releases at Air Force stations in the western United States. Elevation and azimuth angles are used to compute...

  1. US Air Force Base Observations

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Hourly observations taken by U.S. Air Force personnel at bases in the United States and around the world. Foreign observations concentrated in the Middle East and...

  2. Reverse Ballistic Air Gun Facility

    Data.gov (United States)

    Federal Laboratory Consortium — This custom-designed facility houses a suite of three air guns capable of generating accelerations up to 100,000 Gs and velocities up to 2,000 ft/s. In addition to...

  3. Air Pollution Affects Community Health

    Science.gov (United States)

    Shy, Carl M.; Finklea, John F.

    1973-01-01

    Community Health and Environmental Surveillance System (CHESS), a nationwide program relating community health to environmental quality, is designed to evaluate existing environmental standards, obtain health intelligence for new standards, and document health benefits of air pollution control. (BL)

  4. Reverse Ballistic Air Gun Facility

    Data.gov (United States)

    Federal Laboratory Consortium — This custom-designed facility houses a suite of three air guns capable of generating accelerations up to 100,000 Gs and velocities up to 2,000 ft/s. In addition to a...

  5. Indoor Air Quality Test House

    Data.gov (United States)

    Federal Laboratory Consortium — Description:In order to enable studies of a range of indoor air quality and ventilation issues, EL maintains a highly instrumented three-bedroom test house. Previous...

  6. Quality and Indoor Air treatment

    Directory of Open Access Journals (Sweden)

    Cécile HORT

    2008-01-01

    Full Text Available In developed countries, between 70% and 90% of the life time are spent in confined spaces (housing, transport, etc.. Air quality in these closed spaces is generally inferior than outside. Our lifestylesand the growing use of new products and materials create cocktails of chemicals compounds (COV, CIV... that can cause an increase of worrying diseases such as asthma, allergies or even cancer. These pollutants are particularly present in indoor air. These increasing public health problems gives rise to the development of devices for the treatment of indoor air. However, indoor air contains a lot of chemical substances showing very different physicochemical properties. The “Laboratoire de Thermique, Energétique et Procédés” (LaTEP studies the coupling of treatment processes, such as biofiltration coupled to adsorption.

  7. Air cushion vehicles: A briefing

    Science.gov (United States)

    Anderson, J. L.; Finnegan, P. M.

    1971-01-01

    Experience and characteristics; the powering, uses, and implications of large air cushion vehicles (ACV); and the conceptual design and operation of a nuclear powered ACV freighter and supporting facilities are described.

  8. Global air quality and climate.

    Science.gov (United States)

    Fiore, Arlene M; Naik, Vaishali; Spracklen, Dominick V; Steiner, Allison; Unger, Nadine; Prather, Michael; Bergmann, Dan; Cameron-Smith, Philip J; Cionni, Irene; Collins, William J; Dalsøren, Stig; Eyring, Veronika; Folberth, Gerd A; Ginoux, Paul; Horowitz, Larry W; Josse, Béatrice; Lamarque, Jean-François; MacKenzie, Ian A; Nagashima, Tatsuya; O'Connor, Fiona M; Righi, Mattia; Rumbold, Steven T; Shindell, Drew T; Skeie, Ragnhild B; Sudo, Kengo; Szopa, Sophie; Takemura, Toshihiko; Zeng, Guang

    2012-10-07

    Emissions of air pollutants and their precursors determine regional air quality and can alter climate. Climate change can perturb the long-range transport, chemical processing, and local meteorology that influence air pollution. We review the implications of projected changes in methane (CH(4)), ozone precursors (O(3)), and aerosols for climate (expressed in terms of the radiative forcing metric or changes in global surface temperature) and hemispheric-to-continental scale air quality. Reducing the O(3) precursor CH(4) would slow near-term warming by decreasing both CH(4) and tropospheric O(3). Uncertainty remains as to the net climate forcing from anthropogenic nitrogen oxide (NO(x)) emissions, which increase tropospheric O(3) (warming) but also increase aerosols and decrease CH(4) (both cooling). Anthropogenic emissions of carbon monoxide (CO) and non-CH(4) volatile organic compounds (NMVOC) warm by increasing both O(3) and CH(4). Radiative impacts from secondary organic aerosols (SOA) are poorly understood. Black carbon emission controls, by reducing the absorption of sunlight in the atmosphere and on snow and ice, have the potential to slow near-term warming, but uncertainties in coincident emissions of reflective (cooling) aerosols and poorly constrained cloud indirect effects confound robust estimates of net climate impacts. Reducing sulfate and nitrate aerosols would improve air quality and lessen interference with the hydrologic cycle, but lead to warming. A holistic and balanced view is thus needed to assess how air pollution controls influence climate; a first step towards this goal involves estimating net climate impacts from individual emission sectors. Modeling and observational analyses suggest a warming climate degrades air quality (increasing surface O(3) and particulate matter) in many populated regions, including during pollution episodes. Prior Intergovernmental Panel on Climate Change (IPCC) scenarios (SRES) allowed unconstrained growth, whereas

  9. Global Air Quality and Climate

    Science.gov (United States)

    Fiore, Arlene M.; Naik, Vaishali; Steiner, Allison; Unger, Nadine; Bergmann, Dan; Prather, Michael; Righi, Mattia; Rumbold, Steven T.; Shindell, Drew T.; Skeie, Ragnhild B.; Sudo, Kengo; Szopa, Sophie; Horowitz, Larry W.; Takemura, Toshihiko; Zeng, Guang; Cameron-Smith, Philip J.; Cionni, Irene; Collins, William J.; Dalsoren, Stig; Eyring, Veronika; Folberth, Gerd A.; Ginoux, Paul; Josse, Batrice; Lamarque, Jean-Francois; OConnor, Fiona M.; Mackenzie, Ian A.; Nagashima, Tatsuya; Shindell, Drew Todd; Spracklen, Dominick V.

    2012-01-01

    Emissions of air pollutants and their precursors determine regional air quality and can alter climate. Climate change can perturb the long-range transport, chemical processing, and local meteorology that influence air pollution. We review the implications of projected changes in methane (CH4), ozone precursors (O3), and aerosols for climate (expressed in terms of the radiative forcing metric or changes in global surface temperature) and hemispheric-to-continental scale air quality. Reducing the O3 precursor CH4 would slow near-term warming by decreasing both CH4 and tropospheric O3. Uncertainty remains as to the net climate forcing from anthropogenic nitrogen oxide (NOx) emissions, which increase tropospheric O3 (warming) but also increase aerosols and decrease CH4 (both cooling). Anthropogenic emissions of carbon monoxide (CO) and non-CH4 volatile organic compounds (NMVOC) warm by increasing both O3 and CH4. Radiative impacts from secondary organic aerosols (SOA) are poorly understood. Black carbon emission controls, by reducing the absorption of sunlight in the atmosphere and on snow and ice, have the potential to slow near-term warming, but uncertainties in coincident emissions of reflective (cooling) aerosols and poorly constrained cloud indirect effects confound robust estimates of net climate impacts. Reducing sulfate and nitrate aerosols would improve air quality and lessen interference with the hydrologic cycle, but lead to warming. A holistic and balanced view is thus needed to assess how air pollution controls influence climate; a first step towards this goal involves estimating net climate impacts from individual emission sectors. Modeling and observational analyses suggest a warming climate degrades air quality (increasing surface O3 and particulate matter) in many populated regions, including during pollution episodes. Prior Intergovernmental Panel on Climate Change (IPCC) scenarios (SRES) allowed unconstrained growth, whereas the Representative

  10. Call for improving air quality

    Science.gov (United States)

    Showstack, Randy

    2013-01-01

    The European Environmental Bureau (EEB), a federation of citizen organizations, has called for stricter policies in Europe to protect human health and the environment. "Air pollution emanates from sources all around us, be they cars, industrial plants, shipping, agriculture, or waste. The [European Union] must propose ambitious legislation to address all of these sources if it is to tackle the grave public health consequences of air pollution," EEB secretary general Jeremy Wates said on 8 January.

  11. Cognitive abilities and air pollution

    Directory of Open Access Journals (Sweden)

    Raufhon Salahodjaev

    2016-12-01

    Full Text Available The link between intelligence and air pollution is subject to controversy. Some studies report that intelligence has insignificant effect in reducing the greenhouse gas emissions. By using carbon dioxide (CO2 emissions for a large set of countries we present further novel empirical evidence on the relation between level of intelligence and air pollution. Our findings suggest that the relation follows a U-shape pattern and resembles environmental Kuznets curve.

  12. Autonomy of the Air Arm

    Science.gov (United States)

    1996-01-01

    Lewis, and Maj. Gen. George Simonds. Standing, left to right: Brig. Gen. John Gulik, James Doolittle (at that time a civilian), Edgar Gorrell, Brig...official sanction of the War Department, was submitted by Representative John M. Morin ." 56 CREATION OF THE ARmy AIR CORPS The initial stages of the...reality was a revision of the Morin air bill. 47 A quick summary at this point should clarify the major issues under review. Through the medium of various

  13. The lithium air battery fundamentals

    CERN Document Server

    Imanishi, Nobuyuki; Bruce, Peter G

    2014-01-01

    Lithium air rechargeable batteries are the best candidate for a power source for electric vehicles, because of their high specific energy density. In this book, the history, scientific background, status and prospects of the lithium air system are introduced by specialists in the field. This book will contain the basics, current statuses, and prospects for new technologies. This book is ideal for those interested in electrochemistry, energy storage, and materials science.

  14. Small Break Air Ingress Experiment

    Energy Technology Data Exchange (ETDEWEB)

    Chang Oh; Eung Soo Kim

    2011-09-01

    The small break air-ingress experiment, described in this report, is designed to investigate air-ingress phenomena postulated to occur in pipes in a very high temperature gas-cooled reactor (VHTRs). During this experiment, air-ingress rates were measured for various flow and break conditions through small holes drilled into a pipe of the experimental apparatus. The holes were drilled at right angles to the pipe wall such that a direction vector drawn from the pipe centerline to the center of each hole was at right angles with respect to the pipe centerline. Thus the orientation of each hole was obtained by measuring the included angle between the direction vector of each hole with respect to a reference line anchored on the pipe centerline and pointing in the direction of the gravitational force. Using this reference system, the influence of several important parameters on the air ingress flow rate were measured including break orientation, break size, and flow velocity . The approach used to study the influence of these parameters on air ingress is based on measuring the changes in oxygen concentrations at various locations in the helium flow circulation system as a function of time using oxygen sensors (or detectors) to estimate the air-ingress rates through the holes. The test-section is constructed of a stainless steel pipe which had small holes drilled at the desired locations.

  15. Solar air heaters and their applications

    Science.gov (United States)

    Selcuk, M. K.

    1977-01-01

    The solar air heater appears to be the most logical choice, as far as the ultimate application of heating air to maintain a comfortable environment is concerned. One disadvantage of solar air heaters is the need for handling larger volumes of air than liquids due to the low density of air as a working substance. Another disadvantage is the low thermal capacity of air. In cases where thermal storage is needed, water is superior to air. Design variations of solar air heaters are discussed along with the calculation of the efficiency of a flat plate solar air heater, the performance of various collector types, and the applications of solar air heaters. Attention is given to collectors with nonporous absorber plates, collectors with porous absorbers, the performance of flat plate collectors with finned absorbers, a wire mesh absorber, and an overlapped glass plate air heater.

  16. A mixed air/air and air/water heat pump system ensures the air-conditioning of a cinema; Un systeme mixte PAC air/air et air/eau climatise un cinema

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2001-03-01

    This article presents the air conditioning system of a new cinema complex of Boulogne (92, France) which comprises a double-flux air processing plant and two heat pumps. Each heat pump has two independent refrigerating loops: one with a air condenser and the other with a water condenser. This system allows to limit the power of the loop and to reduce the size of the cooling tower and of the vertical ducts. This article describes the technical characteristics of the installation: thermodynamic units, smoke clearing, temperature control, air renewing. (J.S.)

  17. Photovoltaics for appliances and small systems. Enhancement of the PVS for Windows simulation program for development and simulation of PV appliances and small systems. Final report; Photovoltaik fuer Geraete und Kleinsysteme. Erweiterung des Simulationsprogramms PVS fuer Windows zur Entwicklung und Simulation von PV-versorgten Geraeten und Kleinsystemen. Schlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Vogt, R.; Imann, C.; Jung, V.

    2002-06-28

    The PVS simulation program for Windows was to be extended to the development and simulation of PV-supported equipment and small systems. The following new functions were to be integrated: a) Simulation and dimensioning of indoor power supply of systems with different light sources and independent outdoor systems. b)Integration of small wind generators in the simulation and dimensioning of isolated autonomous systems, including wind data and a component database for small wind turbines; c) Differentiation of the PVS battery model for different battery types (lead, Ni/Cd, Li etc.), optimized operating strategies and flexible dimensioning including an additional component database for battery types; d) Extensive cost analysis for PV-supported appliances and small systems, from investments to consumption, operation and maintenance. This will facilitate investment decisions and help systems of this type along in the market. All program components were designed for high flexibility. Users should be able to vary as many parameters as possible, and to generate and modify their own records. The current project focused on the user interface, i.e. input, data processing, and output. Parallel to this, the Fraunhofer ISE Institute worked on modifications of the computer hardware. [German] Das Projekt zielte auf eine Erweiterung des Simulationsprogramms PVS fuer Windows zur Entwicklung und Simulation von PV-versorgten Geraeten und Kleinsystemen hin. Das Entwicklungsprodukt sollte zusaetzlich zu den bisherigen Funktionen insbesondere Folgendes leisten: (a) Simulation und Dimensionierung der Energieversorgung von Geraeten im Indoor-Bereich, wobei unterschiedliche Lichtquellen verarbeitet werden muessen, sowie von sonstigen netzfreien (Outdoor-) Kleinsystemen. (b) Einbindung kleiner Windgeneratoren in die Simulation und Dimensionierung von netzfernen Systemen (Insel-Anlagen), einschliesslich Bereitstellung der Wind-Daten und einer zusaetzlichen Komponenten-Datenbank fuer kleine

  18. Air quality in Europe - 2012 report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-09-15

    This report presents an overview and analysis of the status and trends of air quality in Europe based on concentration measurements in ambient air and data on anthropogenic emissions and trends from 2001 - when mandatory monitoring of ambient air concentrations of selected pollutants first produced reliable air quality information - to 2010. (Author)

  19. Ozone, Air Quality, and Asthma (For Parents)

    Science.gov (United States)

    ... gases can also affect lung function. continue How Poor Air Quality Affects People With Asthma Air pollution is a problem for ... to evening. In cities larger than 350,000 people, state and local agencies are ... days when air quality is poor, run the air conditioning and limit your child's ...

  20. Solid Waste, Air Pollution and Health

    Science.gov (United States)

    Kupchik, George J.; Franz, Gerald J.

    1976-01-01

    This article examines the relationships among solid waste disposal, air pollution, and human disease. It is estimated that solid waste disposal contributes 9.7 percent of the total air pollution and 9.9 percent of the total air pollution health effect. Certain disposal-resource recovery systems can be implemented to meet air quality standards. (MR)

  1. 29 CFR 1917.154 - Compressed air.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 7 2010-07-01 2010-07-01 false Compressed air. 1917.154 Section 1917.154 Labor Regulations...) MARINE TERMINALS Related Terminal Operations and Equipment § 1917.154 Compressed air. Employees shall be... this part during cleaning with compressed air. Compressed air used for cleaning shall not exceed...

  2. 30 CFR 75.321 - Air quality.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Air quality. 75.321 Section 75.321 Mineral... SAFETY STANDARDS-UNDERGROUND COAL MINES Ventilation § 75.321 Air quality. (a)(1) The air in areas where... air current in these areas shall be sufficient to dilute, render harmless, and carry away...

  3. 32 CFR 989.30 - Air quality.

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 6 2010-07-01 2010-07-01 false Air quality. 989.30 Section 989.30 National... ENVIRONMENTAL IMPACT ANALYSIS PROCESS (EIAP) § 989.30 Air quality. Section 176(c) of the Clean Air Act..., Air Quality Compliance. 10 10 See footnote 1 to § 989.1....

  4. Disparities in the Impact of Air Pollution

    Science.gov (United States)

    ... Outdoor > Air Pollution Disparities in the Impact of Air Pollution The burden of air pollution is not evenly shared. Poorer people and some ... studies have explored the differences in harm from air pollution to racial or ethnic groups and people who ...

  5. Air void structure and frost resistance

    DEFF Research Database (Denmark)

    Hasholt, Marianne Tange

    2014-01-01

    are conducted. Results were not originally presented in a way, which made comparison possible. Here the amount of scaled material is depicted as function of air voids parameters: total air content, specific surface, spacing factor, and total surface area of air voids. The total surface area of air voids...... is proportional to the product of total air content and specific surface. In all 4 cases, the conclusion is concurrent that the parameter of total surface area of air voids performs equally well or better than the spacing factor when linking air void characteristics to frost resistance (salt frost scaling...... on that capillary pores are connected to air voids. The chance that a capillary pore is connected to an air void depends on the total surface area of air voids in the system, not the spacing factor....

  6. Chapter 22: Compressed Air Evaluation Protocol

    Energy Technology Data Exchange (ETDEWEB)

    Benton, N.

    2014-11-01

    Compressed-air systems are used widely throughout industry for many operations, including pneumatic tools, packaging and automation equipment, conveyors, and other industrial process operations. Compressed-air systems are defined as a group of subsystems composed of air compressors, air treatment equipment, controls, piping, pneumatic tools, pneumatically powered machinery, and process applications using compressed air. A compressed-air system has three primary functional subsystems: supply, distribution, and demand. Air compressors are the primary energy consumers in a compressed-air system and are the primary focus of this protocol. The two compressed-air energy efficiency measures specifically addressed in this protocol are: high-efficiency/variable speed drive (VSD) compressor replacing modulating compressor; compressed-air leak survey and repairs. This protocol provides direction on how to reliably verify savings from these two measures using a consistent approach for each.

  7. Development of a direct methanol fuel cell system for the power segment below 5 kW; Entwicklung eines Direkt-Methanol-Brennstoffzellensystems der Leistungsklasse kleiner 5 kW

    Energy Technology Data Exchange (ETDEWEB)

    Noelke, M.

    2006-10-20

    The attractiveness of electrical conversion of liquid methanol in a fuel cell is defined by its simple storage and high energy density. Therefore, direct-methanol fuel cell (DMFC) qualifies for applications in portable systems and mobile application in the kW-class. The goal of this work is to develop and demonstrate an improved and optimized peripheral DMFC system compared to the current level of technology. The selected mobile application is the retrofit of the energy supply of a ''Scooter'' with a fuel cell system. The required size reduction and the simplification of the DMFC system are realized by an integrated concept, which combines ideally the peripheral system and the fuel cell. A profound analysis of the stack and the peripheral components is a prerequisite for an optimized design. A detailed modelling and understanding of the stack behaviour establish the starting point of this work. The influence of the most important operating parameters like stack temperature, cell voltage, current density, air ratio and methanol concentration is captured accurately by the developed model and validated by experimental data. This shapes the frame work of the following system design approach. For this the clearly defined task of the peripheral system are investigated individually for alternatives and the best option is selected for the final solution. For selecting the right pumps and blowers available products and prototypes are characterized and checked for the system requirements. The investigation and the modelling of the exhaust gas condenser lead to an optimized component design for the ''Scooter'' DMFC design. Additionally, the integration of the anode loop is accomplished consisting of the supply lines, the circulating pump, the gas separator and the exhaust line. The direct coupling of the fuel cell with a lithium-ion battery as an option for electrical conditioning is investigated. In the system modelling the influence

  8. Development and benefits of air/air-heat exchangers

    Energy Technology Data Exchange (ETDEWEB)

    Kessel, H.W.; Cremer, P.

    1986-02-01

    After the first experiments using glass tube heat exchangers, many air/air heat exchangers have made within ten years the breakthrough as ''interior climate improvers'' in stables. Especially inexpensive synthetic panels, foils and self-construction, ribbed heat exchangers are very popular among farmers. Based on thorough installation planning and satisfactory operating results, thousands of heat exchangers were installed, through which heating oil and fuel gas are being replaced as energy sources, and through an improved interior climate, the productivity can be optimized in fattening and rearing houses. (orig.).

  9. Unit for air decontamination; Unidad para descontaminacion de aire

    Energy Technology Data Exchange (ETDEWEB)

    Mariano H, E

    1991-02-15

    To fulfill the applicable requirements of safety to the ventilation systems in nuclear facilities, it is necessary to make a cleaning of the air that hurtles to the atmosphere. For that which was designed and it manufactured an unit for decontamination of the air for the Pilot plant of production of Nuclear Fuel that this built one with national parts, uses Hepa national filters and the design can adapt for different dimensions of filters, also can be added a lodging for a prefilter or to adopt two Hepa filters. (Author)

  10. Psychiatric aspects of air pollution.

    Science.gov (United States)

    Lundberg, A

    1996-02-01

    Psychological and toxic effects of air pollution can lead to psychiatric symptoms, including anxiety and changes in mood, cognition, and behavior. Increased levels of some air pollutants are accompanied by an increase in psychiatric admissions and emergency calls and, in some studies, by changes in behavior and a reduction in psychological well-being. Numerous toxic pollutants interfere with the development and adult functioning of the nervous system. Manifestations are often insidious or delayed, but they can provide a more sensitive indicator of toxic effects than cancer rates or mortality data. Other medical effects of air pollution, such as asthma, can indirectly affect psychological health. The sick building syndrome and multiple chemical sensitivity are conditions with toxicologic and psychiatric aspects. Psychosocial stress can cause symptoms similar to those of organic mental disorders. Reactions to stress depend on cultural, individual, and situational variables. We must understand these factors to be able to alleviate and prevent the consequences of environmental trauma. Expanded research is recommended in three main areas: (1) how people perceive and cope with environmental health risks, (2) the effects of air pollution on behavior and neuropsychological functioning, and (3) neurotoxicologic evaluation of air pollutants with both behavioral and in vitro studies.

  11. [Air pollution and cardiovascular disease].

    Science.gov (United States)

    Haber, Guy; Witberg, Guy; Danenberg, Haim

    2007-10-01

    Cardiovascular atherothrombosis is the most common cause of death globally, with several well-known risk factors. Air pollution is a byproduct of fuel combustion by motor vehicles, power plants and industrial factories. It is composed of gases, fluids and particulate matter (PM) of different sizes, which include basic carbon, organic carbonic molecules and metals such as vanadium, nickel, zinc and iron. These particles are subdivided by their median size, a major contributing factor for their capability to enter the human body through the respiratory system. Most of the epidemiological studies have shown correlation between acute and long-term exposure to air pollution elements and cardiovascular morbidity in general, and angina pectoris and acute myocardial infarction specifically. Physiological studies have found different arrhythmias as the etiologic cause of cardiovascular morbidity and mortality following exposure to air pollution. A major finding was a decline in heart rate variability, a phenomenon known as endangering for cardiovascular morbidity and mortality, especially in patients after acute myocardial infarction. To date, several pathways have been proposed, including a hypercoagulable state following an inflammatory response, cardiac nervous autonomic disequilibrium, endothelial dysfunction with blood vessel contraction and direct toxic impact on cardiac muscle. Additional research is needed for clarifying the pathophysiological pathways by which air pollution affects the cardiovascular system. That might allow forthcoming with preventive measures and correct treatment, and hence a decrease in cardiovascular morbidity and mortality. Another important target is dose-outcome correlation curves for safety threshold calculation as a basis for air pollution regulations.

  12. Air protection strategy in Poland

    Energy Technology Data Exchange (ETDEWEB)

    Blaszczyk, B.

    1995-12-31

    Air quality is one of the basic factors determining the environmental quality and influencing the life conditions of people. There is a shortage of proper quality air in many regions of Poland. In consequence, and due to unhindered transport, air pollution is the direct cause of losses in the national economy (reduction of crops, losses in forestry, corrosion of buildings and constructions, worsening of people`s health). Poland is believed to be one of the most contaminated European countries. The reason for this, primarily, is the pollution concomitant with energy-generating fuel combustion; in our case it means the use of solid fuels: hard coal and lignite. This monocultural economy of energy generation is accompanied by low efficiency of energy use (high rates of energy loss from buildings, heat transmission pipelines, energy-consuming industrial processes). This inefficiency results in the unnecessary production of energy and pollution. Among other reasons, this results from the fact that in the past Poland did not sign any international agreements concerning the reduction of the emission of pollution. The activities aimes at air protection in Poland are conducted based on the Environmental Formation and Protection Act in effect since 1980 (with many further amendments) and the The Ecological Policy of the state (1991). The goals of the Polish air pollution reduction program for the period 1994-2000 are presented.

  13. [Microbial air purity in hospitals. Operating theatres with air conditioning system].

    Science.gov (United States)

    Krogulski, Adam; Szczotko, Maciej

    2010-01-01

    The aim of this study was to show the influence of air conditioning control for microbial contamination of air inside the operating theatres equipped with correctly working air-conditioning system. This work was based on the results of bacteria and fungi concentration in hospital air obtained since 2001. Assays of microbial air purity conducted on atmospheric air in parallel with indoor air demonstrated that air filters applied in air-conditioning systems worked correctly in every case. To show the problem of fluctuation of bacteria concentration more precisely, every sequences of single results from successive measure series were examined independently.

  14. Development and evaluation of a meteorological model system for assessing the effect of environmental measures on climate and air quality. Vol. 1: Main part and appendices 1 through 5. Final report; Entwicklung und Evaluierung eines meteorologischen Modellsystems zur Folgenabschaetzung von Umwelteingriffen auf Klima und Luftqualitaet. Bd. 1: Hauptteil und Anhaenge 1 bis 5. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Bigalke, K. [METCON Umweltmeteorologische Beratung, Pinneberg (Germany); Schluenzen, K.H. [Hamburg Univ. (Germany). Meteorologisches Inst.

    2001-09-01

    The project focused on the development of a low-cost planning tool for authorities and consulting engineers which meets the envisaged national quality standards (VDI standards). The program system METRAS{sup +} consists of four components for preparation, implementation and quality assurance of mesoscale model calculations, all under Windows. The program system will not be commercialized; instead, it will be made available to interested users at a small fee by the Meteorological Institute of Hamburg University. [German] Ziel war die Bereitstellung eines kostenguenstigen Planungsinstrumentes fuer Behoerden und Beratungsunternehmen, das geplante nationale Qualitaetsnormen (VDI-Richtlinie) erfuellt. Vergleichbare Modelle existieren bislang nur im wissenschaftlichen Bereich, sind kaum qualitaetsgesichert und werden u.a. aus wirtschaftlichen Erwaegungen nur in Ausnahmefaellen eingesetzt. Das Programmsystem METRAS{sup +} setzt sich aus vier Programmkomponenten zusammen, die der Vorbereitung, Durchfuehrung und Qualitaetssicherung mesoskaliger Modellrechnungen dienen. Alle Programmkomponenten laufen unter einer gemeinsamen, anwenderfreundlichen Windowsoberflaeche. Um die breite Anwendung qualifizierter Untersuchungsmethoden im Umweltconsulting zu foerdern, ist geplant, METRAS{sup +} nicht kommerziell zu vertreiben und das Programmsystem interessierten Anwendern gegen einen geringen Kostenbeitrag zur Verfuegung zu stellen. Vertrieb und Oeffentlichkeitsarbeit sollen vom Meteorologischen Institut der Universitaet Hamburg geleistet werden. (orig.)

  15. Development and evaluation of a meteorological model system for assessing the effect of environmental measures on climate and air quality. Vol. 2: Appendices 6 through 10; Entwicklung und Evaluierung eines meteorologischen Modellsystems zur Folgenabschaetzung von Umwelteingriffen auf Klima und Luftqualitaet. Bd. 2: Anhaenge 6-10

    Energy Technology Data Exchange (ETDEWEB)

    Bigalke, K. [Hamburg Univ. (Germany). Meteorologisches Inst.; Schluenzen, K.H. [METCON Umweltmeteorologische Beratung, Pinneberg (Germany)

    2001-09-01

    The project focused on the development of a low-cost planning tool for authorities and consulting engineers which meets the envisaged national quality standards (VDI standards). The program system METRAS{sup +} consists of four components for preparation, implementation and quality assurance of mesoscale model calculations, all under Windows. The program system will not be commercialized; instead, it will be made available to interested users at a small fee by the Meteorological Institute of Hamburg University. [German] Ziel war die Bereitstellung eines kostenguenstigen Planungsinstrumentes fuer Behoerden und Beratungsunternehmen, das geplante nationale Qualitaetsnormen (VDI-Richtlinie) erfuellt. Vergleichbare Modelle existieren bislang nur im wissenschaftlichen Bereich, sind kaum qualitaetsgesichert und werden u.a. aus wirtschaftlichen Erwaegungen nur in Ausnahmefaellen eingesetzt. Das Programmsystem METRAS{sup +} setzt sich aus vier Programmkomponenten zusammen, die der Vorbereitung, Durchfuehrung und Qualitaetssicherung mesoskaliger Modellrechnungen dienen. Alle Programmkomponenten laufen unter einer gemeinsamen, anwenderfreundlichen Windowsoberflaeche. Um die breite Anwendung qualifizierter Untersuchungsmethoden im Umweltconsulting zu foerdern, ist geplant, METRAS{sup +} nicht kommerziell zu vertreiben und das Programmsystem interessierten Anwendern gegen einen geringen Kostenbeitrag zur Verfuegung zu stellen. Vertrieb und Oeffentlichkeitsarbeit sollen vom Meteorologischen Institut der Universitaet Hamburg geleistet werden. (orig.)

  16. Pigeons home faster through polluted air

    OpenAIRE

    Zhongqiu Li; Franck Courchamp; Daniel T. Blumstein

    2016-01-01

    Air pollution, especially haze pollution, is creating health issues for both humans and other animals. However, remarkably little is known about how animals behaviourally respond to air pollution. We used multiple linear regression to analyse 415 pigeon races in the North China Plain, an area with considerable air pollution, and found that while the proportion of pigeons successfully homed was not influenced by air pollution, pigeons homed faster when the air was especially polluted. Our resu...

  17. Considering Air Density in Wind Power Production

    CERN Document Server

    Farkas, Zénó

    2011-01-01

    In the wind power production calculations the air density is usually considered as constant in time. Using the CIPM-2007 equation for the density of moist air as a function of air temperature, air pressure and relative humidity, we show that it is worth taking the variation of the air density into account, because higher accuracy can be obtained in the calculation of the power production for little effort.

  18. Commercial Air Carrier Vulnerabilities to Information Operations

    Science.gov (United States)

    2007-11-02

    GMO /ENS/02E-11 DEPARTMENT OF THE AIR FORCE AIR UNIVERSITY AIR FORCE INSTITUTE OF TECHNOLOGY Wright-Patterson Air Force Base, Ohio...AFIT/ GMO /ENS/02E-11 COMMERCIAL AIR CARRIER VULNERABILITIES TO INFORMATION OPERATIONS...networks that without them, “there is no water coming out of your tap; there is no electricity lighting your room; there is no food being transported to

  19. Heat Recovery Ventilation for Housing: Air-to-Air Heat Exchangers.

    Science.gov (United States)

    Corbett, Robert J.; Miller, Barbara

    The air-to-air heat exchanger (a fan powered ventilation device that recovers heat from stale outgoing air) is explained in this six-part publication. Topic areas addressed are: (1) the nature of air-to-air heat exchangers and how they work; (2) choosing and sizing the system; (3) installation, control, and maintenance of the system; (4) heat…

  20. Review of Air Exchange Rate Models for Air Pollution Exposure Assessments

    Science.gov (United States)

    A critical aspect of air pollution exposure assessments is estimation of the air exchange rate (AER) for various buildings, where people spend their time. The AER, which is rate the exchange of indoor air with outdoor air, is an important determinant for entry of outdoor air pol...

  1. 49 CFR 570.57 - Air brake system and air-over-hydraulic brake subsystem.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 6 2010-10-01 2010-10-01 false Air brake system and air-over-hydraulic brake... STANDARDS Vehicles With GVWR of More Than 10,000 Pounds § 570.57 Air brake system and air-over-hydraulic brake subsystem. The following requirements apply to vehicles with air brake and...

  2. 21 CFR 211.46 - Ventilation, air filtration, air heating and cooling.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 4 2010-04-01 2010-04-01 false Ventilation, air filtration, air heating and... Buildings and Facilities § 211.46 Ventilation, air filtration, air heating and cooling. (a) Adequate... holding of a drug product. (c) Air filtration systems, including prefilters and particulate matter...

  3. Picosecond laser filamentation in air

    CERN Document Server

    Schmitt-Sody, Andreas; Bergé, L; Skupin, S; Polynkin, Pavel

    2016-01-01

    The propagation of intense picosecond laser pulses in air in the presence of strong nonlinear self-action effects and air ionization is investigated experimentally and numerically. The model used for numerical analysis is based on the nonlinear propagator for the optical field coupled with the rate equations for the production of various ionic species and plasma temperature. Our results show that the phenomenon of plasma-driven intensity clamping, which is paramount in femtosecond laser filamentation, holds for picosecond pulses. Furthermore, the temporal pulse distortions are limited and the pulse fluence is also clamped. The resulting unique feature of the picosecond filamentation regime is the production of a broad, fully ionized air channel, continuous both longitudinally and transversely, which may be instrumental for numerous applications.

  4. Steerable percussion air drilling system

    Energy Technology Data Exchange (ETDEWEB)

    Bui, H.D.; Meyers, J.A.; Yost, A.B. II

    1998-12-31

    By increasing penetration rates and bit life, especially in hard formations, the use of down-hole air hammers in the oil field has significantly reduced drilling costs in the Northeast US and West Texas. Unfortunately, drilling by this percussion method has been limited mostly to straight hole applications. This paper presents a new concept of a percussion drilling tool which performs both the function of a down-hole hammer as well as that of a down-hole motor. Such a drilling tool, being introduced here as Steerable Percussion Air Drilling System (SPADS), eliminates the necessity to rotate the drill string and, consequently, enables the use of down-hole air hammers to drill directional wells.

  5. High Energy Efficiency Air Conditioning

    Energy Technology Data Exchange (ETDEWEB)

    Edward McCullough; Patrick Dhooge; Jonathan Nimitz

    2003-12-31

    This project determined the performance of a new high efficiency refrigerant, Ikon B, in a residential air conditioner designed to use R-22. The refrigerant R-22, used in residential and small commercial air conditioners, is being phased out of production in developed countries beginning this year because of concerns regarding its ozone depletion potential. Although a replacement refrigerant, R-410A, is available, it operates at much higher pressure than R-22 and requires new equipment. R-22 air conditioners will continue to be in use for many years to come. Air conditioning is a large part of expensive summer peak power use in many parts of the U.S. Previous testing and computer simulations of Ikon B indicated that it would have 20 - 25% higher coefficient of performance (COP, the amount of cooling obtained per energy used) than R-22 in an air-cooled air conditioner. In this project, a typical new R-22 residential air conditioner was obtained, installed in a large environmental chamber, instrumented, and run both with its original charge of R-22 and then with Ikon B. In the environmental chamber, controlled temperature and humidity could be maintained to obtain repeatable and comparable energy use results. Tests with Ikon B included runs with and without a power controller, and an extended run for several months with subsequent analyses to check compatibility of Ikon B with the air conditioner materials and lubricant. Baseline energy use of the air conditioner with its original R-22 charge was measured at 90 deg F and 100 deg F. After changeover to Ikon B and a larger expansion orifice, energy use was measured at 90 deg F and 100 deg F. Ikon B proved to have about 19% higher COP at 90 deg F and about 26% higher COP at 100 deg F versus R-22. Ikon B had about 20% lower cooling capacity at 90 deg F and about 17% lower cooling capacity at 100 deg F versus R-22 in this system. All results over multiple runs were within 1% relative standard deviation (RSD). All of these

  6. Animal Welfare in Air Transport

    Directory of Open Access Journals (Sweden)

    Boris Popović

    2012-10-01

    Full Text Available Animal welfare is becoming an evermore-important factorfor air carriers from the economical viewpoint, due to its importantimpact on the carrier public image. High standard care hasto be taken of animals during transport in order to satisfy an importantsegment of airline customers, either the Business/Firstclass passengers travelling with pets, or influential shippers ofracing horses, dogs, Zoo species etc.Air transp011 of animals, disregarding other advantages,may pose a threat to their health and welfare being a significantmultifactorial stressor. Along with cardiovascular, endocrineand metabolic abe1mtions, it affects the immune response ofan animal and increases susceptibility to infection. Therefore,strict conditions for air transport of eve1y animal species havebeen imposed. Transport of only healthy animals is approved,as it is necessG/y to prevent the spread of disease during transportand to provide satisfactOJy environment for animals to betransported.

  7. Air pollution and allergic diseases

    Energy Technology Data Exchange (ETDEWEB)

    Ring, J.

    1987-03-13

    In the discussion on possible adverse effects of air pollution upon human health one has to distinguish between out-door and in-door environment. The most frequent pollutants in out-door air over industrialized areas are particulate substances, sulfur dioxide, nitrous oxide, carbonmonoxide, ozone and lead. Most of these substances have direct irritating effects on mucous surfaces. Hypersensitivity reactions have been described against sulfur dioxide and sulfites occurring as asthma, urticaria or anaphylactoid reactions. In-door air pollution is of much greater practical importance for a variety of diseases. Apart from physio-chemical irritants and microbial organisms leading to infections, organic allergens (e.g. house dust mites, moulds, animal epithelia) can induce a variety of allergic diseases via different pathomechanisms.

  8. Investigations on atmospheric dispersion of air pollutants after short-time releases in complex terrain. Third field experiment on atmospheric dispersion around the isolated hill Sophienhoehe in August/September 1988. Methods - experiments - data bank

    Energy Technology Data Exchange (ETDEWEB)

    Zeuner, G.; Heinemann, K. [eds.; Bahmann, W.; Becker, K.; Frank, J.; Gryning, S.E.; Lyck, E.; Mextorf, O.; Moellmann-Coers, M.; Moenig, C.; Narres, H.D.; Oetz, C.; Oetz, W.; Polster, G.; Veroustraete, F.; Voss, W.

    1990-09-01

    In order to set up a data bank for the validation of advanced dispersion models, comprehensive meteorological measurements and dispersion experiments in a complex terrain with a well measured topography are being carried out. These investigations have become possible in cooperation with several external groups and with the financial support of the `Bundesminister fuer Umwelt, Naturschutz und Reaktorsicherheit`. In this report the methods, experiments and results (data bank) of the third field experiment are described. (orig.). [Deutsch] Um eine Datenbasis fuer die Validierung von fortgeschrittenen Ausbreitungsmodellen zur Verfuegung zu stellen, werden umfangreiche meteorologische Messungen und Ausbreitungsexperimente in einem gut vermessenen nicht ebenem Gelaende durchgefuehrt. Diese Untersuchungen werden durch die Zusammenarbeit mit verschiedenen externen Gruppen und die finanzielle Unterstuetzung des Bundesministers fuer Umwelt, Naturschutz und Reaktorsicherheit ermoeglicht. In diesem Beriicht sind die Methoden, doe Experimente und die Ergebnisse der dritten Messkampagne zusammengestellt. (orig.).

  9. Air quality management planning (AQMP

    Directory of Open Access Journals (Sweden)

    Sivertsen Bjarne

    2012-01-01

    Full Text Available In most urban areas of the world, particulate matter (PM levels pose severe problems, addressed in several policy areas (air quality, climate change, and human health. PM presents multiple challenges due to the multitude of its sources, spanning many sectors of economic activity as well as nature, and due to the complexity of atmospheric processes involved in its transport and secondary formation. For the authorities, the goal is to assure minimal impacts of atmospheric PM levels, in practice represented by compliance with existing regulations and standards. This may be achieved through an air quality management plan (AQMP. In Northern America and in parts of Europe, comprehensive research programs have guided development of AQMP over the last forty years. This cumulated experience can be utilized by others who face the same problems, but have yet to develop their own substantial research base. The main purpose of the AQMP development process is to establish an effective and sound basis for planning and management of air quality in a selected area. This type of planning will ensure that significant sources of impacts are identified and controlled in a most cost-effective manner. The choice of tools, methods and input information is often dictated by their availability, and should be evaluated against current best practices. Important elements of the AQMP are the identification of sources and development of a complete emission inventory, the development and operation of an air quality monitoring programme, and the development and application of atmospheric dispersion models. Major task is to collect the necessary input data. The development of the AQMP will take into account: - Air Quality Management System (AQMS requirements; - Operational and functional structure requirements; - Source identification through emission inventories; - Source reduction alternatives, which may be implemented; - Mechanisms for facilitating interdepartmental

  10. Thermodynamic properties of sea air

    Directory of Open Access Journals (Sweden)

    R. Feistel

    2010-02-01

    Full Text Available Very accurate thermodynamic potential functions are available for fluid water, ice, seawater and humid air covering wide ranges of temperature and pressure conditions. They permit the consistent computation of all equilibrium properties as, for example, required for coupled atmosphere-ocean models or the analysis of observational or experimental data. With the exception of humid air, these potential functions are already formulated as international standards released by the International Association for the Properties of Water and Steam (IAPWS, and have been adopted in 2009 for oceanography by IOC/UNESCO.

    In this paper, we derive a collection of formulas for important quantities expressed in terms of the thermodynamic potentials, valid for typical phase transitions and composite systems of humid air and water/ice/seawater. Particular attention is given to equilibria between seawater and humid air, referred to as "sea air" here. In a related initiative, these formulas will soon be implemented in a source-code library for easy practical use. The library is primarily aimed at oceanographic applications but will be relevant to air-sea interaction and meteorology as well.

    The formulas provided are valid for any consistent set of suitable thermodynamic potential functions. Here we adopt potential functions from previous publications in which they are constructed from theoretical laws and empirical data; they are briefly summarized in the appendix. The formulas make use of the full accuracy of these thermodynamic potentials, without additional approximations or empirical coefficients. They are expressed in the temperature scale ITS-90 and the 2008 Reference-Composition Salinity Scale.

  11. Thermodynamic properties of sea air

    Directory of Open Access Journals (Sweden)

    R. Feistel

    2009-10-01

    Full Text Available Very accurate thermodynamic potential functions are available for fluid water, ice, seawater and humid air covering wide ranges of temperature and pressure conditions. They permit the consistent computation of all equilibrium properties as, for example, required for coupled atmosphere–ocean models or the analysis of observational or experimental data. With the exception of humid air, these potential functions are already formulated as international standards released by the International Association for the Properties of Water and Steam (IAPWS, and have been adopted in 2009 for oceanography by IOC/UNESCO.

    In this paper, we derive a collection of formulas for important quantities expressed in terms of the thermodynamic potentials, valid for typical phase transitions and composite systems of humid air and water/ice/seawater. Particular attention is given to equilibria between seawater and humid air, referred to as ''sea air'' here. In a related initiative, these formulas will soon be implemented in a source-code library for easy practical use. The library is primarily aimed at oceanographic applications but will be relevant to air-sea interaction and meteorology as well.

    The formulas provided are valid for any consistent set of suitable thermodynamic potential functions. Here we adopt potential functions from previous publications in which they are constructed from theoretical laws and empirical data; they are briefly summarized in the appendix. The formulas make use of the full accuracy of these thermodynamic potentials, without additional approximations or empirical coefficients. They are expressed in the temperature scale ITS-90 and the 2008 Reference-Composition Salinity Scale.

  12. Development of an axially staged annular combustor with low residence times in the main stage. Final report; Entwicklung eines gestuften Brenners in Ringanordnung mit kleiner Aufenthaltszeit in der Hauptzone. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Bauer, H.J. [BMW Rolls-Royce GmbH, Dahlewitz (Germany). Abt. Brennkammerentwicklung; Theisen, D. [Technische Univ. Muenchen (Germany). Lehrstuhl fuer Flugantriebe

    1998-05-28

    Within the project presented an axially staged annular combustor has been investigated. Staged combustion significantly reduces emissions of nitrogen oxide without sacrifying combustion efficiency and stability during low power conditions. The cold flow in the combustion module was analysed in water analogy tests. Stability of the main fuel injectors was investigated in a low pressure sector rig, high pressure tests were focused on nitric oxides and smoke emissions and on the detection of the temperature pattern at the combustor exit. Based on these results a second configuration was derived. Improved mixing of the pilot stage exhaust gases into the primary zone of the main stage was achieved. This configuration revealed a considerable reduction of nitric oxide emissions as well as a more even exit temperature pattern. The aerothermal design and optimisation of the staged combustor and the interpretation of the experimental results were supported by means of CFD calculations. The accuracy of the prediction of pollutant emissions could be enhanced by the incorporation of an advanced laminar-flamelet combustion model. Fuel/air mixing as well as the combustion process were investigated in a planar model of the staged combustor at LFA, University of Munich, by means of laser-spectroscopic methods. Under atmospheric conditions 2D concentrations of OH, O{sub 2}, and NO were measured. Characteristic differences of the combustion process for the staged and unstaged mode, respectively, were detected. The general applicability of planar temperature measurement by means of `2 lines thermometry` could be demonstrated. (orig.) [Deutsch] Im Rahmen des hier vorgestellten Vorhabens wurde eine axial gestufte Ringbrennkammer untersucht, die eine deutliche Senkung der Stickoxidemissionen bewirkt, ohne den Ausbrand und die Stabilitaet im unteren Lastbereich zu verschlechtern. In Wasseranalogieversuchen wurde die kalte Stroemung analysiert und optimiert. Die Stabilitaet der

  13. Development and application of methods and models for the calculation of spatially and temporally highly resolved emissions in Europe; Entwicklung und Anwendung von Methoden und Modellen zur Berechnung von raeumlich und zeitlich hochaufgeloesten Emissionen in Europa

    Energy Technology Data Exchange (ETDEWEB)

    Thiruchittampalam, Balendra

    2014-04-08

    High spatial and temporal resolution models are essential for answering many questions of air quality management and climate modeling. High-resolution emission models are required to determine the concentration of pollutants using chemical transport models, and to quantify the impacts on health and environment and in particular to develop adequate countermeasures. The aim of this work is to develop methods for the calculation of spatially and temporally high-resolved emissions and to apply these exemplarily on a 1 km x 1 km and hourly resolution for the year 2008 in the EU-27 and EFTA countries. The derivation of methods for the spatial and temporal resolution of emissions with corresponding detailed equations is one of the major improvements that have been carried out in the course of this work. The improvement of the spatial distribution of emissions from the point source relevant sectors like energy supply, industry and waste management is achieved by considering sector specific diffuse emission shares. The progress of the spatial distribution of emissions from households is in particular the development of a fuel type weighted distribution over Europe. Another main focus is the development of the spatial distribution of road transport emissions. Due to the restricted access to traffic count data at the European level, methods have been established to provide reliable emissions on grid level for Europe. The progress in the spatial distribution of agricultural emissions is achieved by the consideration of diffuse shares similar to the other point source relevant sectors like energy supply or industry. In addition to the spatial distribution of the emissions the temporal resolution is a main focus of this work, since the state of knowledge of the temporal resolution of emissions in Europe is still rudimentary. Therefore, it was necessary to develop in particular time curves for the hourly resolution of emissions for the main sectors, namely electricity and heat

  14. Development of a thermal fatigue test method for thermal barrier coatings by laser excitation using a laser thermal shock facility; Entwicklung eines Pruefverfahrens zur laserinduzierten thermischen Ermuedung thermischer Schutzschichten mittels einer Laser-Thermoschockpruefeinrichtung

    Energy Technology Data Exchange (ETDEWEB)

    Nies, Daniel

    2012-07-13

    The finite nature of fossil fuel supply and the growing environmental awareness become increasingly stronger motivations for the development of efficient gas turbines and jet engines for power generation or as engines for land-, sea- and water-based vehicles. One concept developed for this purpose are thermal barrier coatings, where the thermal load of components is reduced by applying a ceramic coating onto the components. In this work the possibility to use a laser thermal shock facility for thermo-cyclic testing of thermal barrier coatings is examined. A focused laser beam is used for heating the sample and a homogeneous temperature distribution on the sample surface is achieved by the used trajectory and radial adjusted laser power. The required improvements of the existing testing facility are explained, including the development of a new sample holder and of the testing and evaluation routines for the experiments. For the assessment of the initiation and evolution of damages, acoustic emission and thermographic methods are used. The possibilities and limits of these methods are assessed during the experiments. The work also includes an extensive temperature dependent characterisation of the ceramic material used for the thermal barrier coating. In this part, the measurement of the Young's modulus by a dynamic method is to be highlighted, as this is a rarely used technique. The characterisations show the expected values, except for a lower porosity as expected by the manufacturer and no significant phase changes during isothermal heat treatments. To reach sample surface temperatures above 1000 C, it is necessary to increase the absorption by an additional coating of magnetite. The temperature distribution on the surface is measured by an infrared camera, which is calibrated for this purpose. With the incorporated active air cooling of the sample backside, the temperature gradient can be controlled, but still leaves room for improvements. Already without

  15. Flow in air conditioned rooms

    DEFF Research Database (Denmark)

    Nielsen, Peter V.

    1974-01-01

    of the flow equations is demonstrated and the flow in air conditioned rooms in case of steady two dimensional flow is predi cted. Compari son with measured results is shown i n the case of small Archimedes numbers, and predictions are shown at high Archimedes numbers. A numerical prediction of f low and heat......Flow in air conditioned r ooms is examined by means of model experiments . The different gearnetries giving unsteady, steady three- dimensional and steady twodimensional flow are determined . Velacity profiles and temperature profiles are measured in some of the geometries. A numerical solution...

  16. When water molecules meet air

    OpenAIRE

    Hsie, Cho-Shuen; Campen, R. Kramer; Verde, Ana Vila; Bolhuis, Peter; Nienhuys, Han-Kwang; Bonn, Mischa

    2012-01-01

    About 70% of our planet is covered in water. Most of that water exists as water in the bulk – the neighbors of water molecules are other water molecules – and only a small fraction of molecules are at the air-water interface. Despite the small relative abundance of interfacial water, it is of the utmost importance: it governs the chemistry involving the surface of oceans and seawater aerosols, or the small water droplets forming clouds. Reactions at the air-water interface are directly releva...

  17. Multizone Age-of-Air Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Sherman, Max H.

    2007-07-01

    Age of air is a technique for evaluating ventilation that has been actively used for over 20 years. Age of air quantifies the time it takes for outdoor air to reach a particular location or zone within then indoor environment. Age of air is often also used to quantify the ventilation effectiveness with respect to indoor air quality. In a purely single zone situation this use of age of air is straightforward, but application of age of air techniques in the general multizone environment has not been fully developed. This article looks at expanding those single-zone techniques to the more complicated environment of multizone buildings and in doing so develops further the general concept of age of air. The results of this analysis shows that the nominal age of air as often used cannot be directly used for determining ventilation effectiveness unless specific assumptions are made regarding source distributions.

  18. 77 FR 52277 - Approval of Air Quality Implementation Plans; California; South Coast Air Quality Management...

    Science.gov (United States)

    2012-08-29

    ... submitted for the South Coast Air Quality Management District (District) portion of the California State... AGENCY 40 CFR Part 52 Approval of Air Quality Implementation Plans; California; South Coast Air Quality Management District; Prevention of Significant Deterioration; Greenhouse Gases AGENCY:...

  19. Aerometric Information Retrieval System/AIRS Facility Subsystem (AIRS/AFS)

    Data.gov (United States)

    U.S. Environmental Protection Agency — The Aerometric Information Retrieval System/AIRS Facility Subsystem (AIRS/AFS) is a database that provides information on air releases from various stationary...

  20. 78 FR 53270 - Revision of Air Quality Implementation Plan; California; Sacramento Metropolitan Air Quality...

    Science.gov (United States)

    2013-08-29

    ... AGENCY 40 CFR Part 52 Revision of Air Quality Implementation Plan; California; Sacramento Metropolitan Air Quality Management District; Stationary Source Permits AGENCY: Environmental Protection Agency... permitting rules submitted by California as a revision to the Sacramento Metropolitan Air Quality...

  1. 78 FR 10589 - Revision of Air Quality Implementation Plan; California; Sacramento Metropolitan Air Quality...

    Science.gov (United States)

    2013-02-14

    ... AGENCY 40 CFR Part 52 Revision of Air Quality Implementation Plan; California; Sacramento Metropolitan Air Quality Management District; Stationary Source Permits AGENCY: Environmental Protection Agency... by California as a revision to the Sacramento Metropolitan Air Quality Management District (SMAQMD...

  2. Operating experiences with rotary air-to-air heat exchangers: hospitals, schools, nursing homes, swimming pools

    Energy Technology Data Exchange (ETDEWEB)

    Pearson, R.J.

    1976-01-01

    Systems utilizing rotary air-to-air heat exchangers are discussed. Basic considerations of use (fresh air requirements, system configurations, cost considerations), typical system layout/design considerations, and operating observations by engineers, staff and maintenance personnel are described.

  3. Antibubbles and fine cylindrical sheets of air

    KAUST Repository

    Beilharz, D.

    2015-08-14

    Drops impacting at low velocities onto a pool surface can stretch out thin hemispherical sheets of air between the drop and the pool. These air sheets can remain intact until they reach submicron thicknesses, at which point they rupture to form a myriad of microbubbles. By impacting a higher-viscosity drop onto a lower-viscosity pool, we have explored new geometries of such air films. In this way we are able to maintain stable air layers which can wrap around the entire drop to form repeatable antibubbles, i.e. spherical air layers bounded by inner and outer liquid masses. Furthermore, for the most viscous drops they enter the pool trailing a viscous thread reaching all the way to the pinch-off nozzle. The air sheet can also wrap around this thread and remain stable over an extended period of time to form a cylindrical air sheet. We study the parameter regime where these structures appear and their subsequent breakup. The stability of these thin cylindrical air sheets is inconsistent with inviscid stability theory, suggesting stabilization by lubrication forces within the submicron air layer. We use interferometry to measure the air-layer thickness versus depth along the cylindrical air sheet and around the drop. The air film is thickest above the equator of the drop, but thinner below the drop and up along the air cylinder. Based on microbubble volumes, the thickness of the cylindrical air layer becomes less than 100 nm before it ruptures.

  4. Air Power in Irregular Warfare

    Science.gov (United States)

    2012-12-01

    bombardment attacks with fighter offense for the control of the air.”57 Douhet commonly bucked the theory of fighter offense, relying solely on “a...morale booster as well. Now patrols could cut a landing zone with chain saws and explosives to receive a medevac chopper rather than face an extended

  5. New concepts in air abrasion.

    Science.gov (United States)

    Porth, R N

    1998-03-01

    There is no doubt that air abrasion is going to be part of the millennial shift in dentistry away from traditional treatment modalities. With the change in incidence and morphology of caries as a result of the hardening effect of fluoride on enamel, this ability to remove only decayed areas and permanently seal the less susceptible areas becomes increasingly desirable.

  6. Pariisi-kiri / Aire Allikmets

    Index Scriptorium Estoniae

    Allikmets, Aire

    1997-01-01

    Fanny de Siversile pühendatud vastuvõtust College de France'i Sinises Salongis 27. märtsil 1997 ja temale pühendatud koguteosest 'Contacts de langues et de cultures dans l'aire Baltique' (koost. M. M. Jocelyne Fernendez ja Raimo Raag)

  7. A Breath of Fresh Air

    Institute of Scientific and Technical Information of China (English)

    2003-01-01

    Have you ever driven by a sewage-treatment plant and noticed a rotten-eggstink? Air-quality requirements force these plants touse devices called chemical scrubbers to eliminate malodorous hydrogen sulfide from the gases createdby bacteria in sewageslurry. The process works,but it's expensive and depends on filtering gasthrough toxic chemicalssuch as lye and bleach.

  8. Health Effects of Air Pollution.

    Science.gov (United States)

    Environmental Education Report and Newsletter, 1985

    1985-01-01

    Summarizes health hazards associated with air pollution, highlighting the difficulty in establishing acceptable thresholds of exposure. Respiratory disease, asthma, cancer, cardiovascular disease, and other problems are addressed. Indicates that a wide range of effects from any one chemical exists and that there are differences in sensitivity to…

  9. A Tire Air Maintenance Technology

    Science.gov (United States)

    Pierce, Alan

    2012-01-01

    Improperly inflated car tires can reduce gas mileage and car performance, speed up tire wear, and even cause a tire to blow out. The AAA auto club recommends that someone check the air pressure of one's car's tires at least once a month. Wouldn't it be nice, though, if someone came up with a tire pressure-monitoring system that automatically kept…

  10. Air-Leakage Control Manual.

    Energy Technology Data Exchange (ETDEWEB)

    Maloney, Jim; Washington State Energy Office; United States. Bonneville Power Administration.

    1991-05-01

    This manual is for builders and designers who are interested in building energy-efficient homes. The purpose of the manual is to provide the how and why'' of controlling air leakage by means of a system called the Simple Caulk and Seal'' (SIMPLE{center dot}CS) system. This manual provides an overview of the purpose and contents of the manual; It discusses the forces that affect air leakage in homes and the benefits of controlling air leakage. Also discussed are two earlier approaches for controlling air leakage and the problems with these approaches. It describes the SIMPLE-{center dot}CS system. It outlines the standard components of the building envelope that require sealing and provides guidelines for sealing them. It outlines a step-by-step procedure for analyzing and planning the sealing effort. The procedure includes (1) identifying areas to be sealed, (2) determining the most effective and convenient stage of construction in which to do the sealing, and (3) designating the appropriate crew member or trade to be responsible for the sealing.

  11. Air-leakage control manual

    Energy Technology Data Exchange (ETDEWEB)

    Maloney, J. [Washington State Energy Office, Olympia, WA (United States)

    1991-05-01

    This manual is for builders and designers who are interested in building energy-efficient homes. The purpose of the manual is to provide the ``how and why`` of controlling air leakage by means of a system called the ``Simple Caulk and Seal`` (SIMPLE{center_dot}CS) system. This manual provides an overview of the purpose and contents of the manual; It discusses the forces that affect air leakage in homes and the benefits of controlling air leakage. Also discussed are two earlier approaches for controlling air leakage and the problems with these approaches. It describes the SIMPLE-{center_dot}CS system. It outlines the standard components of the building envelope that require sealing and provides guidelines for sealing them. It outlines a step-by-step procedure for analyzing and planning the sealing effort. The procedure includes (1) identifying areas to be sealed, (2) determining the most effective and convenient stage of construction in which to do the sealing, and (3) designating the appropriate crew member or trade to be responsible for the sealing.

  12. Ballistics examination of air rifle.

    Science.gov (United States)

    Bogiel, G

    2014-01-01

    The aim of this paper is to determine the velocity, energy, maximum range and distance at which pellets fired from an air rifle of kinetic energy below 17 J can pose a threat to unprotected human skin. Doppler radar equipment and exterior ballistics software were used in this examination.

  13. Ballistics examination of air rifle

    Directory of Open Access Journals (Sweden)

    Grzegorz Bogiel

    2014-08-01

    Full Text Available The aim of this paper is to determine the velocity, energy, maximum range and distance at which pellets fired from an air rifle of kinetic energy below 17 J can pose a threat to unprotected human skin. Doppler radar equipment and exterior ballistics software were used in this examination.

  14. Ballistics examination of air rifle

    OpenAIRE

    2014-01-01

    The aim of this paper is to determine the velocity, energy, maximum range and distance at which pellets fired from an air rifle of kinetic energy below 17 J can pose a threat to unprotected human skin. Doppler radar equipment and exterior ballistics software were used in this examination.

  15. Biological effects of air pollution

    NARCIS (Netherlands)

    Joosting, P.E.; Houten, J.G. ten

    1971-01-01

    Exposure of living organisms to sulphur dioxide, sulphuric acid, fly ash, other particulates, and oxides of nitrogen is discussed from the points of view of air pollution phenomenology, specific and nonspecific responses of plants, animals and man, and environmental and constitutional factors that i

  16. Experimental Analysis on Solar Desiccant Air Conditioner

    Directory of Open Access Journals (Sweden)

    Dr. U. V. Kongre, C. M. Singh, A. B. Biswas

    2014-05-01

    Full Text Available The experiment investigated and evaluated the feasibility of an solar desiccant air conditioner. Its effectiveness as a possible air conditioner option used in household air conditioner or as an energy efficient and environmentally friendly alternative to conventional air conditioning units used in houses are evaluated. A solar water heater was used as heat gain. The model utilizes the technology of solar air conditioner system. The purpose in the long term would be reduced the consumption of electricity used for air conditioning, reduce harmful emission and hence saving money.

  17. Air ambulance medical transport advertising and marketing.

    Science.gov (United States)

    2011-01-01

    The National Association of EMS Physicians (NAEMSP), the American College of Emergency Physicians (ACEP), the Air Medical Physician Association (AMPA), the Association of Air Medical Services (AAMS), and the National Association of State EMS Officials (NASEMSO) believe that patient care and outcomes are optimized by using air medical transport services that are licensed air ambulance providers with robust physician medical director oversight and ongoing quality assessment and review. Only air ambulance medical transport services with these credentials should advertise/market themselves as air ambulance services.

  18. AIR for Javascript Developers Pocket Guide

    CERN Document Server

    Chambers, Mike; Hoyt, Kevin; Georgita, Dragos

    2009-01-01

    This book is the official guide to Adobe ® AIR[TM], written by members of the AIR team. With Adobe AIR, web developers can use technologies like HTML and JavaScript to build and deploy web applications to the desktop. Packed with examples, this book explains how AIR works and features recipes for performing common runtime tasks. Part of the Adobe Developer Library, this concise pocket guide explains: What Adobe AIR is, and the problems this runtime aims to solveHow to set up your development environmentThe HTML and JavaScript environments within AIRHow to create your first AIR application

  19. VENTILATION INFLUENCE UPON INDOOR AIR RADON LEVEL

    Institute of Scientific and Technical Information of China (English)

    田德源

    1995-01-01

    Levels of indoor radon in air are studied by a continuous electrostatic radon monitor under normal living conditions to evaluate the influence of air conditioned ventilation on indoor air radon level.Results show that the indoor air radon concentrations are not much more than those without household conditioner living condition.although using household conditioner requires a sealed room which should lead to a higher radon level.Turning on air conditioner helps lower indoor radon level.Therefore.the total indoor air Rn levels are normal>ventilation>exhaust or indraft> exhaust plus indraft.

  20. On Air Shutter for Cold Storage Room

    Science.gov (United States)

    Fukuhara, Isamu; Tsuji, Katsuhiko

    Air curtains are frequently placed at doorway of cold storage room or freezing chamber. As an opening of jet flow in these air curtains is relatively narrow and speed of jet flow is fast, air entrained from surroundings increases in quantity. Therefore, we consider that jet flow with narrow opening can not effectively isolate inside air from the external atmosphere, but the one with relatively wide opening can decrease air entrained from surroundings. Then, when air curtain which has a wide opening (we call it air shutter) is installed at cold storage room, and isolating performances of air shutter are compared with the air curtain. First, as various conditions can be easily changed in numerical calculation, we compare a velocity and temperature field in cold storage room under these conditions when velocity of jet flow is changed by using numerical method. Second, we measure a temperature and velocity distribution in an actual cold storage room under three conditions (air shutter operates, air curtain operates and no operation). From these results, it was found that air shutter is more efficient than air curtain.

  1. Air quality in Europe - 2011 report

    Energy Technology Data Exchange (ETDEWEB)

    Guerreiro, C.; Larssen, S. (Norsk Inst. for Luftforskning (NILU), Lillestroem (Norway)); Leeuw, F. de (RIVM, Bilthoven (Netherlands)); Foltescu, V. (EEA, Copenhagen (Denmark))

    2011-11-15

    The annual report 'Air quality in Europe' summarises the most recent evaluation of Europe's air quality status. It is mainly based on air quality measurement data that have been made available officially by 32 EEA member countries as well as 6 EEA cooperating countries. The report includes maps and analyses of air quality status over the calendar year 2009. It also analyses air quality trends over the past years. The evaluation of the status and trends of air quality is based on ambient air measurements, in conjunction with reported anthropogenic emissions. The report summarizes the main effects of different air pollutants on human health, the environment and the climate. An overview of policies and measures at European level is also given for each pollutant. This report reviews progress towards meeting the requirements of the two air quality directives in force as well as the air quality guidelines set by the World Health Organization (WHO). The report is produced in support of European and national policy development and implementation in the field of air quality. It also supports air quality management and informs the general public on the current status and trends of air quality in Europe. (Author)

  2. TANGO ARRAY An Air Shower Experiment in Buenos Aires

    CERN Document Server

    Bauleo, P; Filevich, A; Reguera, A

    2004-01-01

    A new Air Shower Observatory has been constructed in Buenos Aires during 1999, and commissioned and set in operation in 2000. The observatory consists of an array of four water \\v{C}erenkov detectors, enclosing a geometrical area of $\\sim$ 30.000 m$^{2}$, and is optimized for the observation of cosmic rays in the ``knee'' energy region. The array detects $\\sim$ 250 to $\\sim$ 1500 showers/day, depending on the selected triggering condition. In this paper, the design and construction of the array, and the automatic system for data adquisition, daily calibration, and monitoring, are described. Also, the Monte Carlo simulations performed to develop a shower database, as well as the studies performed using the database to estimate the response and the angular and energy resolutions of the array, are presented in detail.

  3. Power plant VII revisited - Air-air /Scirocco/

    Science.gov (United States)

    Etievant, C.; Royer, D.

    A hybrid fossil fuel-solar central receiver power plant is described, noting principally a 'Scirocco' configuration for the receiver. The primary loop contains air which enters passages in the alveolar-configured walls of the boiler, which is semi-spherically shaped. The alveoles are located in the back of the cavity while the upper and lower surfaces are reflective. A heat flux of 24.4 MWth is delivered to the aperture by 668 heliostats, each having a 53 sq m surface. Air is heated to 660 C and then flows past flame tubes to attain temperatures near 900 C through use of a combustor before impinging on the turbine blades. It is noted that although only 1000 hr of functioning are currently available for the Scirocco configuration, it offers the chance to reduce the size of the boiler. Further studies to optimize the materials for the boiler are indicated.

  4. Significance of air humidity and air velocity for fungal spore release into the air

    Science.gov (United States)

    Pasanen, A.-L.; Pasanen, P.; Jantunen, M. J.; Kalliokoski, P.

    Our previous field studies have shown that the presence of molds in buildings does not necessarily mean elevated airborne spore counts. Therefore, we investigated the release of fungal spores from cultures of Aspergillus fumigatus, Penicillium sp. and Cladosporium sp. at different air velocities and air humidities. Spores of A. fumigatus and Penicillium sp. were released from conidiophores already at air velocity of 0.5 ms -1, whereas Cladosporium spores required at least a velocity of 1.0 ms -1. Airborne spore counts of A. fumigatus and Penicillium sp. were usually higher in dry than moist air, being minimal at relative humidities (r.h.) above 70%, while the effect of r.h. on the release of Cladosporium sp. was ambivalent. The geometric mean diameter of released spores increased when the r.h. exceeded a certain level which depends on fungal genus. Thus, spores of all three fungi were hygroscopic but the hygroscopicity of various spores appeared at different r.h.-ranges. This study indicates that spore release is controlled by external factors and depends on fungal genus which can be one reason for considerable variation of airborne spore counts in buildings with mold problems.

  5. Impact of individually controlled facially applied air movement on perceived air quality at high humidity

    Energy Technology Data Exchange (ETDEWEB)

    Skwarczynski, M.A. [Faculty of Environmental Engineering, Institute of Environmental Protection Engineering, Department of Indoor Environment Engineering, Lublin University of Technology, Lublin (Poland); International Centre for Indoor Environment and Energy, Department of Civil Engineering, Technical University of Denmark, Copenhagen (Denmark); Melikov, A.K.; Lyubenova, V. [International Centre for Indoor Environment and Energy, Department of Civil Engineering, Technical University of Denmark, Copenhagen (Denmark); Kaczmarczyk, J. [Faculty of Energy and Environmental Engineering, Department of Heating, Ventilation and Dust Removal Technology, Silesian University of Technology, Gliwice (Poland)

    2010-10-15

    The effect of facially applied air movement on perceived air quality (PAQ) at high humidity was studied. Thirty subjects (21 males and 9 females) participated in three, 3-h experiments performed in a climate chamber. The experimental conditions covered three combinations of relative humidity and local air velocity under a constant air temperature of 26 C, namely: 70% relative humidity without air movement, 30% relative humidity without air movement and 70% relative humidity with air movement under isothermal conditions. Personalized ventilation was used to supply room air from the front toward the upper part of the body (upper chest, head). The subjects could control the flow rate (velocity) of the supplied air in the vicinity of their bodies. The results indicate an airflow with elevated velocity applied to the face significantly improves the acceptability of the air quality at the room air temperature of 26 C and relative humidity of 70%. (author)

  6. TANGO ARRAY I: An Air Shower Experiment in Buenos Aires

    Science.gov (United States)

    Bauleo, P.; Bonifazi, C.; Filevich, A.; Reguera, A.

    The TANGO Array is an air shower experiment which has been recently constructed in Buenos Aires, Argentina. It became fully operational in September, 2000. The array consists of 4 water ˇCerenkov detector stations enclosing a geometrical area of ˜ 30.000 m2 and its design has been optimized for the observation of EAS produced by cosmic rays near the "knee" energy region. Three of the detectors have been constructed using 12000-liter stainless steel tanks, and the fourth has been mounted in a smaller, 400liter plastic container. The detectors are connected by cables to the data acquisition room, where a fully automatic system, which takes advantage of the features of a 4-channel digital oscilloscope, was set for data collection without the need of operator intervention. This automatic experiment control includes monitoring, data logging, and daily calibration of all stations. This paper describes the detectors and their associated electronics, and details are given on the data acquisition system, the triggering and calibration procedures, and the operation of the array. Examples of air shower traces, recorded by the array, are presented.

  7. Community air monitoring and Village Green Project

    Science.gov (United States)

    Cost and logistics are practical issues that have historically constrained the number of locations where long-term, active air pollution measurement is possible. In addition, traditional air monitoring approaches are generally conducted by technical experts with limited engageme...

  8. Solid State Air Purification System Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The purpose of this proposed research is to develop a new air purification system based on a liquid membrane, capable of purifying carbon dioxide from air in a far...

  9. Poster Puzzler Solution: Taking in Air | Poster

    Science.gov (United States)

    The current Poster Puzzler image shows the top of Building 560, where a new supply air handler was recently installed by Facilities Maintenance and Engineering (FME) staff, as part of lab renovations in wing 1, floor 1. FME staff enlarged the attic of the building to make space for the air handler. Building 560, the largest building at the NCI at Frederick campus, houses about 120 labs and has 19 air handlers. A supply air handler draws in outside air, filters it, cools or heats it, and adjusts the humidity to provide clean conditioned air to the laboratories. The Building 560 air handler weighs approximately 22,500 pounds and moves 22,000 cubic feet of air per minute.

  10. Noise Emission from Laboratory Air Blowers

    Science.gov (United States)

    Rossing, Thomas D.; Windham, Betty

    1978-01-01

    Product noise ratings for a number of laboratory air blowers are reported and several recommendations for reducing laboratory noise from air blowers are given. Relevant noise ratings and methods for measuring noise emission of appliances are discussed. (BB)

  11. Air quality strategy for Hong Kong

    Energy Technology Data Exchange (ETDEWEB)

    Alex, N.K.Y. [Air Policy Group, Wanchai (Hong Kong). Environmental Protection Dept.

    1995-12-31

    Hong Kong has experienced unimpeded economic growth for four decades but at the same time has suffered from growing air pollution. A new look at the air quality strategy is therefore required to bring about sustainable development. (author)

  12. Seneca Compressed Air Energy Storage (CAES) Project

    Energy Technology Data Exchange (ETDEWEB)

    None

    2012-11-30

    This document provides specifications for the process air compressor for a compressed air storage project, requests a budgetary quote, and provides supporting information, including compressor data, site specific data, water analysis, and Seneca CAES value drivers.

  13. Protective supplied-breathing-air garment

    Science.gov (United States)

    Childers, E.L.; von Hortenau, E.F.

    1982-05-28

    A breathing-air garment for isolating a wearer from hostile environments containing toxins or irritants is disclosed. The garment includes a suit and a separate head-protective enclosure or hood engaging a suit collar in sealing attachment. The hood and suit collar are cylindrically shaped and dimensioned to enable the wearer to withdraw his hands from the suit sleeves to perform manual tasks within the hood interior. Breathing air is supplied from an external air line with an air-delivery hose attached to the hood interior. The hose feeds air into an annular halo-like fiber-filled plenum having spaced discharge orifices attached to the hood top wall. A plurality of air exhaust/check valves located at the suit extremities cooperate with the hood air-delivery system to provide a cooling flow of circulating air from the hood throughout the suit interior. A suit entry seal provided on the suit sealed with an adhesive sealing flap.

  14. Cheyenne Mountain Air Force Station NPDES Permit

    Science.gov (United States)

    Under NPDES permit CO-0034762, the Cheyenne Mountain Air Force Station is authorized to discharge from the interior storm drainage system and air exhaust stacks at the Cheyenne Mountain Complex, in El Paso County, Colorado, to tributaries Fountain Creek.

  15. Estonian Air sai lennukilisa / Gert D. Hankewitz

    Index Scriptorium Estoniae

    Hankewitz, Gert D.

    2007-01-01

    Lennukompanii Estonian Air liisib kolm uut lennukit. Kommenteerib Rein Loik. Vt. samas intervjuud SAS-i asepresidendi Per Jensen Mölleriga, kes eitab spekulatsioone, et SAS võiks airBalticu ja Estonian Airi liita

  16. Can Air Pollution Heighten Alzheimer's Risk?

    Science.gov (United States)

    ... https://medlineplus.gov/news/fullstory_163365.html Can Air Pollution Heighten Alzheimer's Risk? Fine particles from power plants ... 1, 2017 WEDNESDAY, Feb. 1, 2017 (HealthDay News) -- Air pollution may cause more than just lung disease: New ...

  17. Air Emissions Sources, Charts and Maps

    Data.gov (United States)

    U.S. Environmental Protection Agency — Air Emissions provides (1) interactive charts supporting national, state, or county charts, (2) county maps of criteria air pollutant emissions for a state, and (3)...

  18. Air Pollution Monitoring for Communities Grants

    Science.gov (United States)

    EPA, through its Science to Achieve Results (STAR) grants program is providing funding to six institutions that will advance air monitoring technology while helping communities address unique air quality challenges.

  19. Air Pollution and Heart Disease, Stroke

    Science.gov (United States)

    ... Peripheral Artery Disease Venous Thromboembolism Aortic Aneurysm More Air Pollution and Heart Disease, Stroke Updated:Aug 30,2016 ... or Longer-Term Acute short-term effects of air pollution tend to strike people who are elderly or ...

  20. Indoor air quality and health

    Science.gov (United States)

    Jones, A. P.

    During the last two decades there has been increasing concern within the scientific community over the effects of indoor air quality on health. Changes in building design devised to improve energy efficiency have meant that modern homes and offices are frequently more airtight than older structures. Furthermore, advances in construction technology have caused a much greater use of synthetic building materials. Whilst these improvements have led to more comfortable buildings with lower running costs, they also provide indoor environments in which contaminants are readily produced and may build up to much higher concentrations than are found outside. This article reviews our current understanding of the relationship between indoor air pollution and health. Indoor pollutants can emanate from a range of sources. The health impacts from indoor exposure to combustion products from heating, cooking, and the smoking of tobacco are examined. Also discussed are the symptoms associated with pollutants emitted from building materials. Of particular importance might be substances known as volatile organic compounds (VOCs), which arise from sources including paints, varnishes, solvents, and preservatives. Furthermore, if the structure of a building begins to deteriorate, exposure to asbestos may be an important risk factor for the chronic respiratory disease mesothelioma. The health effects of inhaled biological particles can be significant, as a large variety of biological materials are present in indoor environments. Their role in inducing illness through immune mechanisms, infectious processes, and direct toxicity is considered. Outdoor sources can be the main contributors to indoor concentrations of some contaminants. Of particular significance is Radon, the radioactive gas that arises from outside, yet only presents a serious health risk when found inside buildings. Radon and its decay products are now recognised as important indoor pollutants, and their effects are

  1. AIR POLLUTION OF URBAN AREAS

    Directory of Open Access Journals (Sweden)

    MAKAROVA V. N.

    2016-04-01

    Full Text Available Raising of problem. Any manufacturing processes related to the generation of waste. Year after year, a growing mass of waste is one of the main factors reducing the quality of the environment and destruction of natural landscapes. Industrial development inevitably enhances human impacts on the environment and disrupts the ecological balance [3]. Atmospher air is a vital element of the environment. The development of industry, the growth of cities, increasing the number of transport, active exploration of near-Earth space lead to a change in the gas composition of the atmosphere and disruption of its natural balance. Air quality affects the health of the population [5]. Without water or food a person can do for a while, but without air he can not live a few minutes, therefore saving air breathable is an urgent problem. Purpose. The results of geological studies clearly indicate that the contamination of the surface layer of the atmosphere is the most powerful permanent factor of influence on the human food chain and the environment. This problem was reflected in the scientific literature [2; 3; 6], and the second significant indicator of ecological well-being of the region is the number of generation and accumulation of waste. According to this indicator, Dnipropetrovsk region is in the lead, as relates to the industrialized regions. The idea of the article is to consider the air pollution of the urban environment in terms of the accumulation of waste in the territory of enterprises, in particular slag dumps metallurgical production. Conclusion. Slag dumps located on the premises are a significant source of air pollution urbanized areas due to the permanent nature of the spread of contamination. Slag dump of PAT "Nikopol Ferroalloy Plant" is a source of manganese, zinc, nickel emissions. As a conclusion about the magnitude of pollution of the atmospheric boundary layer can say the following: on the border of the sanitary protection zone (SPZ, in

  2. Sensitivity to draught in turbulent air flows

    Energy Technology Data Exchange (ETDEWEB)

    Todde, V.

    1998-09-01

    Even though the ventilation system is designed to supply air flows at constant low velocity and controlled temperature, the resulting air movement in rooms is strongly characterised by random fluctuations. When an air flow is supplied from an inlet, a shear layer forms between the incoming and the standstill air in the room, and large scale vortices develops by coalescence of the vorticity shed at the inlet of the air supply. After a characteristically downstream distance, large scale vortices loose their identity because of the development of cascading eddies and transition to turbulence. The interaction of these vortical structures will rise a complicated three dimensional air movement affected by fluctuations whose frequencies could vary from fractions of Hz to several KHz. The perception and sensitivity to the cooling effect enhanced by these air movements depend on a number of factors interacting with each other: physical properties of the air flow, part and extension of the skin surface exposed to the air flow, exposure duration, global thermal condition, gender and posture of the person. Earlier studies were concerned with the percentage of dissatisfied subjects as a function of air velocity and temperature. Recently, experimental observations have shown that also the fluctuations, the turbulence intensity and the direction of air velocity have an important impact on draught discomfort. Two experimental investigations have been developed to observe the human reaction to horizontal air movements on bared skin surfaces, hands and neck. Attention was concentrated on the effects of relative turbulence intensity of air velocity and exposure duration on perception and sensitivity to the air movement. The air jet flows, adopted for the draught experiment in the neck, were also the object of an experimental study. This experiment was designed to observe the centre-line velocity of an isothermal circular air jet, as a function of the velocity properties at the outlet

  3. Ambient air pollution and low birthweight

    DEFF Research Database (Denmark)

    Pedersen, Marie; Giorgis-Allemand, Lise; Bernard, Claire

    2013-01-01

    BACKGROUND: Ambient air pollution has been associated with restricted fetal growth, which is linked with adverse respiratory health in childhood. We assessed the effect of maternal exposure to low concentrations of ambient air pollution on birthweight. METHODS: We pooled data from 14 population...... air pollutants and traffic during pregnancy is associated with restricted fetal growth. A substantial proportion of cases of low birthweight at term could be prevented in Europe if urban air pollution was reduced. FUNDING: The European Union....

  4. Solar air-conditioning. Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2009-07-01

    Within the 3rd International Conference on solar air-conditioning in Palermo (Italy) at 30th September to 2nd October, 2009 the following lectures were held: (1) Removal of non-technological barriers to solar cooling technology across Southern European islands (Stefano Rugginenti); (2) The added economic and environmental value of solar thermal systems in microgrids with combined heat and power (Chris Marney); (3) Australian solar cooling interest group (Paul Kohlenbach); (4) Designing of a technology roadmap for solar assisted air conditioning in Austria (Hilbert Focke); (5) Solar cooling in the new context of renewable policies at European level (Raffaele Piria); (6) Prototype of a solar driven steam jet ejector chiller (Clemens Pollerberg); (7) New integrated solar air conditioning system (Joan Carlos Bruno); (8) Primary energy optimised operation of solar driven desiccant evaporative cooling systems through innovative control strategies; (9) Green chiller association (Uli Jakob); (10) Climate Well {sup registered} (Olof Hallstrom); (11) Low capacity absorption chillers for solar cooling applications (Gregor Weidner); (12) Solar cooling in residential, small scale commercial and industrial applications with adsorption technology (Walter Mittelbach); (13) French solar heating and cooling development programme based on energy performance (Daniel Mugnier); (14) Mirrox fresnel process heat collectors for industrial applications and solar cooling (Christian Zahler); (15) Modelling and analyzing solar cooling systems in polysun (Seyen Hossein Rezaei); (16) Solar cooling application in Valle Susa Italy (Sufia Jung); (17) Virtual case study on small solar cooling systems within the SolarCombi+Project (Bjoern Nienborg); (18) Design of solar cooling plants under uncertainty (Fernando Dominguez-Munoz); (19) Fast pre-design of systems using solar thermally driven chillers (Hans-Martin Henning); (20) Design of a high fraction solar heating and cooling plant in southern

  5. Air guns: toys or weapons?

    Science.gov (United States)

    Aslan, Sahin; Uzkeser, Mustafa; Katirci, Yavuz; Cakir, Zeynep; Bilir, Ozlem; Bilge, Fatih; Cakir, Murtaza

    2006-09-01

    Air guns and blank guns may appear relatively harmless at first glance, but they are, in fact, potentially destructive, even lethal, weapons. Approximately 2 to 2.5 million nonpowder firearms are sold annually, and again approximately 12.9 per 100,000 population are treated for such injuries in hospital emergency departments each year in the United States. Unfortunately, these guns are considered to be a toy for children. Therefore, incidents of air gun injuries are gradually increasing. Although such injuries may initially be considered trivial, it may signify severe internal tissue pathologies. These apparently trivial injuries may have catastrophic consequences if unnoticed. In this study, we report 4 cases with head injury due to a shot by these guns. The cases indicate that these people had used the guns belonging to their parents for the purpose of suicide. The cases also show that these machines are not innocent.

  6. Health effects of air conditioning

    Energy Technology Data Exchange (ETDEWEB)

    Molina, C.; Caillaud, D.

    The air conditioning used in residential or commercial buildings (offices, hotels, sterile areas of hospitals, computer and electronics industries) is responsible for a certain number of well identified ailments which can be classified in three groups: infections (legionnaires'disease, ornithosis), allergies (mainly respiratory) eg. rhinitis, asthma, alveolitis but also Monday morning illness or humidifier fever, various functional disorders grouped under the name Sick Building Syndrome. To avoid these problems, a certain number of recommendations may be made. They concern: installation of air conditioning, humidification which is the cause of bacterial and fungal contamination, filtration, monitoring of the installation by qualitative and quantitative measurements, maintenance. The legal problems relating to these illnesses, the responsibility for which is ultimately laid at the door of the installers, should also be mentioned. Allergies are recognized to be of professional origin in Table 66 of allergic illnesses issued by the Social Security.

  7. Plant response to polluted air

    Energy Technology Data Exchange (ETDEWEB)

    Kendrick, J.B. Jr.; Darley, E.F.; Middleton, J.T.; Paulus, A.O.

    1956-08-01

    Field observations and controlled fumigation experiments have shown that plants differ in their response to atmospheric contamination by ethylene, herbicides, fluorides, sulfur dioxide, and smog, or oxidized hydrocarbons. Controlled experiments have also shown that plant response to air pollution varies with species and variety of plant, age of plant tissue, soil fertility levels, soil moisture, air temperatures during the prefumigation growth period, and presence of certain agricultural chemicals on leaves. The leaves of many plants; such as tomato, African marigold, fuchsia, pepper, and potato, become curved and malformed in the presence of ethylene, while those of cantaloupe, China aster, gardenia, Cattleya orchid, and snapdragon do not. Ethylene may cause serious damage to the sepals of orchids without injury to the petals or leaves.

  8. Marine Special Operations Companies Need Marine Air

    Science.gov (United States)

    2009-02-20

    Reconnaissance S S S P S S Electronic Warfare S S P P S P Anti-Air Warfare S S P S S P Source: LtCol Luis Mercado USMC and Maj Jay Lynn USMC...will most certainly not be MEU air.6 Without MEU air support during deployment the MSOC will labor to effectively achieve combined arms synergy

  9. U turn to venous air embolism

    Directory of Open Access Journals (Sweden)

    Singh Harsimran

    2009-01-01

    Full Text Available There is a definitive risk of venous air embolism when the fluid infusion is complete and the drip set is still open in a glass bottle.We have devised a novel way of preventing the chances of air embolism when the fluid in the glass bottle finishes. It really gives a "U" turn to the chances of venous air embolism.

  10. Statistical distributions of air pollution concentrations

    Energy Technology Data Exchange (ETDEWEB)

    Georgopoulos, P.G.; Seinfeld, J.H.

    1982-07-01

    Methodologies and limitations in describing air quality through statistical distributions of pollutant are discussed, and the use of extreme statistics in the evaluation of different forms of air quality standards are explained. In addition, the interpretation of rollback calculations with regard to air quality standards is discussed. (JMT)

  11. Air pocket removal from downward sloping pipes

    NARCIS (Netherlands)

    Pothof, I.W.M.; Clemens, F.H.L.R.

    2012-01-01

    Air-water flow is an undesired condition in water pipelines and hydropower tunnels. Water pipelines and wastewater pressure mains in particular are subject to air pocket accumulation in downward sloping reaches, such as inverted siphons or terrain slopes. Air pockets cause energy losses and an assoc

  12. Air cleaning using regenerative silica gel wheel

    DEFF Research Database (Denmark)

    Fang, Lei

    2011-01-01

    This paper discussed the necessity of indoor air cleaning and the state of the art information on gas-phase air cleaning technology. The performance and problems of oxidation and sorption air cleaning technology were summarized and analysed based on the literature studies. Eventually, based on an...

  13. Impact of wildfires on regional air pollution

    Science.gov (United States)

    We examine the impact of wildfires and agricultural/prescribed burning on regional air pollution and Air Quality Index (AQI) between 2006 and 2013. We define daily regional air pollution using monitoring sites for ozone (n=1595), PM2.5 collected by Federal Reference Method (n=10...

  14. Millimeter-Wave Studies of Moist Air.

    Science.gov (United States)

    1987-06-01

    m3) DRY WATER HAZE, FOG AIR + VAPOR + CLOUD + RAIN TOTAL --------------------------------------------------------------------- FREQUENCY Nt-IMAGINARY...100.000 (GHz) OUTPUT: Case Number: 1 (Refractive delay = 1171.5 pe/km) MOIST AIR (v= 12.81 g/m3) DRY WATER HAZE, FOG AIR + VAPOR + CLOUD + RAIN TOTAL

  15. 30 CFR 75.325 - Air quantity.

    Science.gov (United States)

    2010-07-01

    ... of permanent supports. (3) If machine mounted dust collectors or diffuser fans are used, the approved... currents cannot be controlled and air measurements cannot be obtained, the air shall have perceptible... results of sampling that demonstrate that the lesser air quantity will maintain continuous compliance...

  16. The effectiveness of a heated air curtain

    Science.gov (United States)

    Frank, Daria

    2014-11-01

    Air curtains are high-velocity plane turbulent jets which are installed in the doorway in order to reduce the heat and the mass exchange between two environments. The air curtain effectiveness E is defined as the fraction of the exchange flow prevented by the air curtain compared to the open-door situation. In the present study, we investigate the effects of an opposing buoyancy force on the air curtain effectiveness. Such an opposing buoyancy force arises for example if a downwards blowing air curtain is heated. We conducted small-scale experiments using water as the working fluid with density differences created by salt and sugar. The effectiveness of a downwards blowing air curtain was measured for situations in which the initial density of the air curtain was less than both the indoor and the outdoor fluid density, which corresponds to the case of a heated air curtain. We compare the effectiveness of the heated air curtain to the case of the neutrally buoyant air curtain. It is found that the effectiveness starts to decrease if the air curtain is heated beyond a critical temperature. Furthermore, we propose a theoretical model to describe the dynamics of the buoyant air curtain. Numerical results obtained from solving this model corroborate our experimental findings.

  17. 40 CFR 257.3-7 - Air.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Air. 257.3-7 Section 257.3-7... and Practices § 257.3-7 Air. (a) The facility or practice shall not engage in open burning of... 110 of the Clean Air Act, as amended. (c) As used in this section “open burning” means the...

  18. Indoor Air Quality in Chemistry Laboratories.

    Science.gov (United States)

    Hays, Steve M.

    This paper presents air quality and ventilation data from an existing chemical laboratory facility and discusses the work practice changes implemented in response to deficiencies in ventilation. General methods for improving air quality in existing laboratories are presented and investigation techniques for characterizing air quality are…

  19. AirBaltic says RIX favors Ryanair

    Index Scriptorium Estoniae

    2011-01-01

    Riia lennujaama juht märkis 10. märtsi telesaates, et airBaltic ei saa oma arveid õigeks ajaks makstud. AirBaltic süüditab lennujaama Ryanairi soosimises. Valitsus kaalub airBalticule investorite otsimist

  20. Workshop on indoor air quality research needs

    Energy Technology Data Exchange (ETDEWEB)

    1980-01-01

    Workshop participants report on indoor air quality research needs including the monitoring of indoor air quality, report of the instrumentation subgroup of indoor air quality, health effects, and the report of the control technology session. Risk analysis studies addressing indoor environments were also summarized. (DLS)

  1. Technology Candidates for Air-to-Air and Air-to-Ground Data Exchange

    Science.gov (United States)

    Haynes, Brian D.

    2015-01-01

    Technology Candidates for Air-to-Air and Air-to-Ground Data Exchange is a two-year research effort to visualize the U. S. aviation industry at a point 50 years in the future, and to define potential communication solutions to meet those future data exchange needs. The research team, led by XCELAR, was tasked with identifying future National Airspace System (NAS) scenarios, determining requirements and functions (including gaps), investigating technical and business issues for air, ground, & air-to-ground interactions, and reporting on the results. The project was conducted under technical direction from NASA and in collaboration with XCELAR's partner, National Institute of Aerospace, and NASA technical representatives. Parallel efforts were initiated to define the information exchange functional needs of the future NAS, and specific communication link technologies to potentially serve those needs. Those efforts converged with the mapping of each identified future NAS function to potential enabling communication solutions; those solutions were then compared with, and ranked relative to, each other on a technical basis in a structured analysis process. The technical solutions emerging from that process were then assessed from a business case perspective to determine their viability from a real-world adoption and deployment standpoint. The results of that analysis produced a proposed set of future solutions and most promising candidate technologies. Gap analyses were conducted at two points in the process, the first examining technical factors, and the second as part of the business case analysis. In each case, no gaps or unmet needs were identified in applying the solutions evaluated to the requirements identified. The future communication solutions identified in the research comprise both specific link technologies and two enabling technologies that apply to most or all specific links. As a result, the research resulted in a new analysis approach, viewing the

  2. Air Conditioner Compressor Performance Model

    Energy Technology Data Exchange (ETDEWEB)

    Lu, Ning; Xie, YuLong; Huang, Zhenyu

    2008-09-05

    During the past three years, the Western Electricity Coordinating Council (WECC) Load Modeling Task Force (LMTF) has led the effort to develop the new modeling approach. As part of this effort, the Bonneville Power Administration (BPA), Southern California Edison (SCE), and Electric Power Research Institute (EPRI) Solutions tested 27 residential air-conditioning units to assess their response to delayed voltage recovery transients. After completing these tests, different modeling approaches were proposed, among them a performance modeling approach that proved to be one of the three favored for its simplicity and ability to recreate different SVR events satisfactorily. Funded by the California Energy Commission (CEC) under its load modeling project, researchers at Pacific Northwest National Laboratory (PNNL) led the follow-on task to analyze the motor testing data to derive the parameters needed to develop a performance models for the single-phase air-conditioning (SPAC) unit. To derive the performance model, PNNL researchers first used the motor voltage and frequency ramping test data to obtain the real (P) and reactive (Q) power versus voltage (V) and frequency (f) curves. Then, curve fitting was used to develop the P-V, Q-V, P-f, and Q-f relationships for motor running and stalling states. The resulting performance model ignores the dynamic response of the air-conditioning motor. Because the inertia of the air-conditioning motor is very small (H<0.05), the motor reaches from one steady state to another in a few cycles. So, the performance model is a fair representation of the motor behaviors in both running and stalling states.

  3. Clean Air Act. Revision 5

    Energy Technology Data Exchange (ETDEWEB)

    1994-02-15

    This Reference Book contains a current copy of the Clean Air Act, as amended, and those regulations that implement the statute and appear to be most relevant to DOE activities. The document is provided to DOE and contractor staff for informational purposes only and should not be interpreted as legal guidance. This Reference Book has been completely revised and is current through February 15, 1994.

  4. Development of Passenger Air Carriers

    Directory of Open Access Journals (Sweden)

    Igor Diminik

    2006-09-01

    Full Text Available The work presents the development of carriers in passengerair traffic, and the focus is on the development and operationsof carriers in chartered passenger transport. After the SecondWorld War, there were only scheduled air carriers. The need formass transport of tourists resulted in the development of chartercarriers or usage of scheduled carriers under different commercialconditions acceptable for tourism. Eventually also low-costcarriers appeared and they realize an increasing share in thepassenger transport especially in the aviation developed countries.

  5. Fundamentals of air pollution engineering

    OpenAIRE

    Flagan, Richard C.; Seinfeld, John H.

    1988-01-01

    Analysis and abatement of air pollution involve a variety of technical disciplines. Formation of the most prevalent pollutants occurs during the combustion process, a tightly coupled system involving fluid flow, mass and energy transport, and chemical kinetics. Its complexity is exemplified by the fact that, in many respects, the simplest hydrocarbon combustion, the methane-oxygen flame, has been quantitatively modeled only within the last several years. Nonetheless, the development of combus...

  6. Thermal Conductivity of Humid Air

    Science.gov (United States)

    Beirão, S. G. S.; Ribeiro, A. P. C.; Lourenço, M. J. V.; Santos, F. J. V.; Nieto de Castro, C. A.

    2012-09-01

    In this article, measurements of the thermal conductivity of humid air as a function of pressure, temperature, and mole fraction of water, for pressures up to 5 MPa and temperatures up to 430 K, for different water contents (up to 10 % vapor mole fraction) are reported. Measurements were performed using a transient hot-wire apparatus capable of obtaining data with an uncertainty of 0.8 % for gases. However, as moist air becomes corrosive above 373 K and at pressures >5 MPa, the apparatus, namely, the pressure vessel and the cells had to be modified, by coating all stainless-steel parts with a titanium nitride thin film coating, about 4 μm thick, obtained by physical vapor deposition. The expanded uncertainty (coverage factor k = 2) of the present experimental thermal conductivity data is 1.7 %, while the uncertainty in the mole fraction is estimated to be better than 0.0006. Experimental details regarding the preparation of the samples, the precautions taken to avoid condensation in the tubes connected to the measuring cell, and the method developed for obtaining reliable values of the water content for the gas mixtures are discussed. A preliminary analysis of the application of the kinetic theory of transport properties in reacting mixtures to interpret the complex dependence of the thermal conductivity of humid air on water composition is addressed.

  7. Indoor air and allergic diseases

    Energy Technology Data Exchange (ETDEWEB)

    Kunkel, G.; Rudolph, R.; Muckelmann, R.

    1982-01-01

    Allergies may be the source of a variety of clinical symptoms. With regard to indoor air, however, the subject will be limited to inhalative allergies. These are diseases which are caused and supported by allergens entering the human organism via the respiratory pathway. The fundamentals of the origin of inhalative allergies are briefly discussed as well as the antigen-antibody reaction and the differentiation between different allergic reactions (Types I and II). In addition, the importance of repetitive infections of the upper respiratory tract for the occurrence of allergies of the respiratory system is pointed out. The most common allergies develop at the mucosae of the nose (allergic rhinitis) and of the bronchiale (allergic asthma bronchiale). Their symptomatology is discussed. Out of the allergologically interesting components of indoor air the following are to be considered primarily: house dust, components of house dust (house dust mite, trogoderma angustum, tenebrio molitor), epithelia of animals, animal feeds, mildew and occupational substances. Unspecific irritants (chemico-physical irritations) which are not acting as allergens, have to be clearly separated from these most frequent allergens. As a possibility of treatment for the therapeutist and the patient, there is the allergen prophylaxis, i.e. an extensive sanitation of the patient's environment including elimination of the allergens and, in addition, an amelioration of the quality of the air with regard to unspecific irritants. To conclude, some socio-medical aspects of respiratory diseases are discussed.

  8. Study of air-liquid flow patterns in hydrocyclone enhanced by air bubbles

    Energy Technology Data Exchange (ETDEWEB)

    Bai, Z.; Wang, H.; Tu, S.T. [School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai (China)

    2009-01-15

    In order to improve the oil-water separation efficiency of a hydrocyclone, a new process utilizing air bubbles has been developed to enhance separation performance. Using the two-component phase Doppler particle analyzer (PDPA) technique, the velocities of two phases, air and liquid, and air bubble diameter were measured in a hydrocyclone. The air-liquid mixing pump can produce 15 to 60 {mu}m-diameter air bubbles in water. There is an optimum air-liquid ratio for oil-water separation of a hydrocyclone enhanced by air bubbles. An air core occurs in the hydrocyclone when the air-liquid ratio is more than 1 %. The velocities of air bubbles have a similar flow pattern to the water phase. The axial and tangential velocity differences of the air bubbles at different air-liquid ratio are greater near the wall and near the core of the hydrocyclone. The measured results show that the size distribution of the air bubbles produced by the air-liquid mixing pump is beneficial to the process where air bubbles capture oil droplets in the hydrocyclone. These studies are helpful to understand the separation mechanism of a hydrocyclone enhanced by air bubbles. (Abstract Copyright [2009], Wiley Periodicals, Inc.)

  9. 78 FR 58460 - Revision of Air Quality Implementation Plan; California; Placer County Air Pollution Control...

    Science.gov (United States)

    2013-09-24

    ... Pollution Control District and Feather River Air Quality Management District; Stationary Source Permits... California as a revision to the Placer County Air Pollution Control District (PCAPCD) and Feather River Air... for the California SIP, Placer County Air Pollution Control District, Rule 502 (New Source...

  10. Air quality in Spain 1990. Calidad del aire en Espaa 1990

    Energy Technology Data Exchange (ETDEWEB)

    1993-01-01

    This monograph studies air quality in Spain. It is articulated into 7 chapters: - Air pollution in the world - Air pollution in regions (regional areas) - Air pollution in villages (local areas) - Local networks in Spain - Meteorological characteristics in 1990 - Events - Atmospheric chemistry.

  11. 49 CFR 173.166 - Air bag inflators, air bag modules and seat-belt pretensioners.

    Science.gov (United States)

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Air bag inflators, air bag modules and seat-belt... Than Class 1 and Class 7 § 173.166 Air bag inflators, air bag modules and seat-belt pretensioners. (a... an inflatable bag assembly. A seat-belt pre-tensioner contains similar hazardous materials and...

  12. Mobile Air Monitoring: Measuring Change in Air Quality in the City of Hamilton, 2005-2010

    Science.gov (United States)

    Adams, Matthew D.; DeLuca, Patrick F.; Corr, Denis; Kanaroglou, Pavlos S.

    2012-01-01

    This paper examines the change in air pollutant concentrations between 2005 and 2010 occurring in the City of Hamilton, Ontario, Canada. After analysis of stationary air pollutant concentration data, we analyze mobile air pollutant concentration data. Air pollutants included in the analysis are CO, PM[subscript 2.5], SO[subscript 2], NO,…

  13. 78 FR 49484 - Exchange of Air Force Real Property for Non-Air Force Real Property

    Science.gov (United States)

    2013-08-14

    ... Department of Air Force Exchange of Air Force Real Property for Non-Air Force Real Property SUMMARY: Notice identifies excess Federal real property under administrative jurisdiction of the United States Air Force it intends to exchange for real property not currently owned by the Federal government that will be...

  14. 75 FR 18061 - Approval and Promulgation of Air Quality Implementation Plans; Texas; Control of Air Pollution...

    Science.gov (United States)

    2010-04-09

    ... Air Pollution From Motor Vehicles AGENCY: Environmental Protection Agency (EPA). ACTION: Direct final... amend 30 TAC Chapter 114, Control of Air Pollution from Motor Vehicles. These revisions consist of the... to develop air pollution regulations and control strategies to ensure that air quality meets...

  15. Air distribution and ventilation effectiveness in an occupied room heated by warm air

    DEFF Research Database (Denmark)

    Krajcik, Michal; Simone, Angela; Olesen, Bjarne W.

    2012-01-01

    and at different simulated outside conditions, internal heat gains and air change rates. Floor heating was also simulated and compared with the warm air heating system. Vertical air temperature profiles, air velocity profiles and equivalent temperatures were derived in order to describe the thermal environment......Air distribution, ventilation effectiveness and thermal environment were experimentally studied in a simulated room in a low-energy building heated and ventilated by warm air supplied by a mixing ventilation system. Measurements were performed for various positions of the air terminal devices....... Contaminant removal effectiveness and air change efficiency were used to evaluate ventilation effectiveness. No significant risk of thermal discomfort due to vertical air temperature differences or draught was found. When the room was heated by warm air, buoyancy forces were important for ventilation...

  16. Fungal colonization of air-conditioning systems

    Directory of Open Access Journals (Sweden)

    Ljaljević-Grbić Milica

    2008-01-01

    Full Text Available Fungi have been implicated as quantitatively the most important bioaerosol component of indoor air associated with contaminated air-conditioning systems. rarely, indoor fungi may cause human infections, but more commonly allergenic responses ranging from pneumonitis to asthma-like symptoms. From all air conditioner filters analyzed, 16 fungal taxa were isolated and identified. Aspergillus fumigatus causes more lethal infections worldwide than any other mold. Air-conditioning filters that adsorb moisture and volatile organics appear to provide suitable substrates for fungal colonization. It is important to stress that fungal colonization of air-conditioning systems should not be ignored, especially in hospital environments.

  17. Strategy Guideline. Compact Air Distribution Systems

    Energy Technology Data Exchange (ETDEWEB)

    Burdick, Arlan [IBACOS, Inc., Pittsburgh, PA (United States)

    2013-06-01

    This guideline discusses the benefits and challenges of using a compact air distribution system to handle the reduced loads and reduced air volume needed to condition the space within an energy efficient home. The decision criteria for a compact air distribution system must be determined early in the whole-house design process, considering both supply and return air design. However, careful installation of a compact air distribution system can result in lower material costs from smaller equipment, shorter duct runs, and fewer outlets; increased installation efficiencies, including ease of fitting the system into conditioned space; lower loads on a better balanced HVAC system, and overall improved energy efficiency of the home.

  18. Good air quality in offices improves productivity

    DEFF Research Database (Denmark)

    Fanger, Povl Ole

    2000-01-01

    Three recent independent studies have documented that the quality of indoor air has a significant and positive influence or? the productivity of office workers. A combined analysis of the results of the three studies shows a significant relationship between productivity and perceived indoor air...... quality. The impact on productivity justifies a much higher indoor air quality than the minimum levels prescribed in present standards and guidelines. One way of providing air of high quality for people to breathe, without involving excessive ventilation rates and energy use, is to provide "personalized...... air" to each individual. The application of this concept is discussed in this paper: (C) 2000 Journal of Mechanical Engineering. All rights reserved....

  19. Good air quality in offices improves productivity

    DEFF Research Database (Denmark)

    Fanger, Povl Ole

    2000-01-01

    Three recent independent studies have documented that the quality of indoor air has a significant and positive influence on the productivity of office workers. A combined analysis of the results of the three studies shows a significant relationship between productivity and perceived indoor air...... quality. The impact on productivity justifies a much higher indoor air quality than the minimum levels prescribed in present standards and guidelines. One way of providing air of high quality for people to breathe, without involving excessive ventilation rates and energy use, is to provide "personalized...... air" to each individual. The application of this concept is discussed....

  20. Changes in air flow patterns using surfactants and thickeners during air sparging: bench-scale experiments.

    Science.gov (United States)

    Kim, Juyoung; Kim, Heonki; Annable, Michael D

    2015-01-01

    Air injected into an aquifer during air sparging normally flows upward according to the pressure gradients and buoyancy, and the direction of air flow depends on the natural hydrogeologic setting. In this study, a new method for controlling air flow paths in the saturated zone during air sparging processes is presented. Two hydrodynamic parameters, viscosity and surface tension of the aqueous phase in the aquifer, were altered using appropriate water-soluble reagents distributed before initiating air sparging. Increased viscosity retarded the travel velocity of the air front during air sparging by modifying the viscosity ratio. Using a one-dimensional column packed with water-saturated sand, the velocity of air intrusion into the saturated region under a constant pressure gradient was inversely proportional to the viscosity of the aqueous solution. The air flow direction, and thus the air flux distribution was measured using gaseous flux meters placed at the sand surface during air sparging experiments using both two-, and three-dimensional physical models. Air flow was found to be influenced by the presence of an aqueous patch of high viscosity or suppressed surface tension in the aquifer. Air flow was selective through the low-surface tension (46.5 dyn/cm) region, whereas an aqueous patch of high viscosity (2.77 cP) was as an effective air flow barrier. Formation of a low-surface tension region in the target contaminated zone in the aquifer, before the air sparging process is inaugurated, may induce air flow through the target zone maximizing the contaminant removal efficiency of the injected air. In contrast, a region with high viscosity in the air sparging influence zone may minimize air flow through the region prohibiting the region from de-saturating.

  1. Air Quality Assessment Using Interpolation Technique

    Directory of Open Access Journals (Sweden)

    Awkash Kumar

    2016-07-01

    Full Text Available Air pollution is increasing rapidly in almost all cities around the world due to increase in population. Mumbai city in India is one of the mega cities where air quality is deteriorating at a very rapid rate. Air quality monitoring stations have been installed in the city to regulate air pollution control strategies to reduce the air pollution level. In this paper, air quality assessment has been carried out over the sample region using interpolation techniques. The technique Inverse Distance Weighting (IDW of Geographical Information System (GIS has been used to perform interpolation with the help of concentration data on air quality at three locations of Mumbai for the year 2008. The classification was done for the spatial and temporal variation in air quality levels for Mumbai region. The seasonal and annual variations of air quality levels for SO2, NOx and SPM (Suspended Particulate Matter have been focused in this study. Results show that SPM concentration always exceeded the permissible limit of National Ambient Air Quality Standard. Also, seasonal trends of pollutant SPM was low in monsoon due rain fall. The finding of this study will help to formulate control strategies for rational management of air pollution and can be used for many other regions.

  2. Practicality study on air-powered vehicle

    Institute of Scientific and Technical Information of China (English)

    Lin LIU; Xiaoli YU

    2008-01-01

    To investigate the feasibility and outlook of air-powered vehicles including compressed air-powered vehicle and liquid nitrogen-powered vehicle, thermodyn-amic analysis and experiment data were used to analyze the energy density, performance, safety, running effi-ciency, fuel circulation economy and consumer accep-tance, etc. The results show that compressed air and liquid nitrogen have similar energy density as Ni-H battery; the characteristics of an air-powered engine is suitable for driving a vehicle; the circulation efficiency of liquid nitrogen is 3.6%-14% and that of compressed air is 25%-32.3% in practice, and existing technology can assure its safety. It is concluded that though the performance of an air-powered engine is inferior to that of the traditional inert combustion engine, an air-powered vehicle is fit for future green cars to realize the sustainable development of society and environment.

  3. Low-Threshold Bidirectional Air Lasing

    Science.gov (United States)

    Laurain, Alexandre; Scheller, Maik; Polynkin, Pavel

    2014-12-01

    Air lasing refers to the remote optical pumping of the constituents of ambient air that results in a directional laserlike emission from the pumped region. Intense current investigations of this concept are motivated by the potential applications in remote atmospheric sensing. Different approaches to air lasing are being investigated, but, so far, only the approach based on dissociation and resonant two-photon pumping of air molecules by deep-UV laser pulses has produced measurable lasing energies in real air and in the backward direction, which is of the most relevance for applications. However, the emission had a high pumping threshold, in hundreds of GW /cm2. We demonstrate that the threshold can be virtually eliminated through predissociation of air molecules with an additional nanosecond laser. We use a single tunable pump laser system to generate backward-propagating lasing in both oxygen and nitrogen in air, with energies of up to 1 μ J per pulse.

  4. Industrial Compressed Air System Energy Efficiency Guidebook.

    Energy Technology Data Exchange (ETDEWEB)

    United States. Bonneville Power Administration.

    1993-12-01

    Energy efficient design, operation and maintenance of compressed air systems in industrial plants can provide substantial reductions in electric power and other operational costs. This guidebook will help identify cost effective, energy efficiency opportunities in compressed air system design, re-design, operation and maintenance. The guidebook provides: (1) a broad overview of industrial compressed air systems, (2) methods for estimating compressed air consumption and projected air savings, (3) a description of applicable, generic energy conservation measures, and, (4) a review of some compressed air system demonstration projects that have taken place over the last two years. The primary audience for this guidebook includes plant maintenance supervisors, plant engineers, plant managers and others interested in energy management of industrial compressed air systems.

  5. 40 CFR 52.1929 - Significant deterioration of air quality.

    Science.gov (United States)

    2010-07-01

    ... quality. 52.1929 Section 52.1929 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) AIR... Significant deterioration of air quality. (a) Regulation for preventing significant deterioration of air... preventing significant deterioration of air quality....

  6. Elemental characterization of air particulate matter in Buenos Aires, Argentina

    Energy Technology Data Exchange (ETDEWEB)

    Jasan, Raquel C.; Pla, Rita R.; Invernizzi, Rodrigo [Comision Nacional de Energia Atomica, Buenos Aires (Argentina). Centro Atomico Ezeiza. Grupo Tecnicas Analiticas Nucleares], E-mail: jasan@cae.cnea.gov.ar, E-mail: rpla@cae.cnea.gov.ar; Santos, Marina dos [Comision Nacional de Energia Atomica, Buenos Aires (Argentina). Centro Atomico Constituyentes. Lab. de Contaminacion del Aire], E-mail: mdossant@cnea.gov.ar

    2007-07-01

    Buenos Aires, the capital city of Argentina, is surrounded by 24 neighboring districts forming the so-called Buenos Aires metropolitan area (AMBA) that holds a population of 14 million people. In this work, the atmospheric aerosol of this metropolitan area was characterized through the determination of mass concentration, black carbon and elemental concentrations, on PM10 and PM2.5 samples taken using a 'Gent' sampler. The sampling site was located at an urban area characterized by fast and heavy traffic and samples were collected each third day, along 24 hours, between October 2005 and February 2006. A number of elements (As, Ba, Br, Ce, Co, Cr, Cs, Eu, Fe, Hf, La, Na, Rb, Sb, Sc, Se, Sm, Th, Yb and Zn) were determined by Neutron Activation Analysis and their results, as well as those of gravimetric mass concentrations, were compared with historical data. Enrichment factors were calculated for both fractions, using Sc as reference element and Mason's crustal concentration values, showing enrichment for As, Br, Sb, Se and Zn. Although the number of analyzed filters is still small, a preliminary factor analysis was run on both fraction results and different source profiles were found. The attribution of the sources to soil, high temperature processes including refuse incineration, fuel combustion and others, metal processes, traffic and other anthropogenic ones is discussed. (author)

  7. A synthetic zero air standard

    Science.gov (United States)

    Pearce, Ruth

    2016-04-01

    A Synthetic Zero Air Standard R. E. Hill-Pearce, K. V. Resner, D. R. Worton, P. J. Brewer The National Physical Laboratory Teddington, Middlesex TW11 0LW UK We present work towards providing traceability for measurements of high impact greenhouse gases identified by the World Meteorological Organisation (WMO) as critical for global monitoring. Standards for these components are required with challengingly low uncertainties to improve the quality assurance and control processes used for the global networks to better assess climate trends. Currently the WMO compatibility goals require reference standards with uncertainties of < 100 nmolmol-1 for CO2 (northern hemisphere) and < 2 nmolmol-1 for CH4 and CO. High purity zero gas is required for both the balance gas in the preparation of reference standards and for baseline calibrations of instrumentation. Quantification of the amount fraction of the target components in the zero gas is a significant contributor to the uncertainty and is challenging due to limited availability of reference standard at the amount fraction of the measurand and limited analytical techniques with sufficient detection limits. A novel dilutor was used to blend NPL Primary Reference Gas Mixtures containing CO2, CH4 and CO at atmospheric amount fractions with a zero gas under test. Several mixtures were generated with nominal dilution ratios ranging from 2000:1 to 350:1. The baseline of two cavity ring down spectrometers was calibrated using the zero gas under test after purification by oxidative removal of CO and hydrocarbons to < 1 nmolmol-1 (SAES PS15-GC50) followed by the removal of CO2 and water vapour to < 100 pmolmol-1 (SAES MC190). Using the standard addition method.[1] we have quantified the amount fraction of CO, CO2, and CH4 in scrubbed whole air (Scott Marrin) and NPL synthetic zero air. This is the first synthetic zero air standard with a matrix of N2, O2 and Ar closely matching ambient composition with gravimetrically assigned

  8. Uncertainty in Air Quality Modeling.

    Science.gov (United States)

    Fox, Douglas G.

    1984-01-01

    Under the direction of the AMS Steering Committee for the EPA Cooperative Agreement on Air Quality Modeling, a small group of scientists convened to consider the question of uncertainty in air quality modeling. Because the group was particularly concerned with the regulatory use of models, its discussion focused on modeling tall stack, point source emissions.The group agreed that air quality model results should be viewed as containing both reducible error and inherent uncertainty. Reducible error results from improper or inadequate meteorological and air quality data inputs, and from inadequacies in the models. Inherent uncertainty results from the basic stochastic nature of the turbulent atmospheric motions that are responsible for transport and diffusion of released materials. Modelers should acknowledge that all their predictions to date contain some associated uncertainty and strive also to quantify uncertainty.How can the uncertainty be quantified? There was no consensus from the group as to precisely how uncertainty should be calculated. One subgroup, which addressed statistical procedures, suggested that uncertainty information could be obtained from comparisons of observations and predictions. Following recommendations from a previous AMS workshop on performance evaluation (Fox. 1981), the subgroup suggested construction of probability distribution functions from the differences between observations and predictions. Further, they recommended that relatively new computer-intensive statistical procedures be considered to improve the quality of uncertainty estimates for the extreme value statistics of interest in regulatory applications.A second subgroup, which addressed the basic nature of uncertainty in a stochastic system, also recommended that uncertainty be quantified by consideration of the differences between observations and predictions. They suggested that the average of the difference squared was appropriate to isolate the inherent uncertainty that

  9. [Die entwicklung der psychiatrie in oberosterreich 1960 - 2000.].

    Science.gov (United States)

    Hofmann, Gustav; Schöny, Werner

    2004-09-01

    Psychiatric reforms in Upper Austria have considerably improved the quality of life of psychiatric patients. Modernizing the status of acute psychiatric departments based on a bio- psycho-, social concept implemented multidimensional approach in diagnostics and therapeutic methods applied by multiprofessional teams. Prophylactic procedures and rehabilitation programs have minimized chronification of psychiatric diseases. By "late rehabilitation programs" increased autonomy, more individualized planning of life processes could be achieved even with "chronic" patients. We do not see any need to confine "chronic" psychiatric patients in psychiatric hospitals. These patients are cared for, socially integrated by special rehabilitation measures and professional rehabilitation in community - based services and units of Pro Mente Upper Austria - a non-profit organization. Problems are decreased duration of stay in psychiatric hospitals, increased admission rates when the number of beds in psychiatric departments was considerably decreased in the course of psychiatric reforms in Austria. In our province - Upper Austria - these problems are of lesser importance because private non-profit organizations like Pro Mente Upper Austria have provided a variety of community-based services (mental health centres, day clinics, housing facilities and special services for drug addicts and geriatric patients ) in ever increasing numbers. Still there is need of further development of community-based services provided by specially trained professionals. These services are financed mainly by the state, the provincial government, the labour market services and to a small degree by funds of the European Union. In these days of reduced social budgets of the state and social departments of provincial governments it is not easy to keep our standards and meet the increased needs of our clients.

  10. Entwicklung einer Produktstrategie für einen Veranstaltungskalender Wirtschaftswissenschaften

    OpenAIRE

    Steinhagen, Elisabeth

    2014-01-01

    Diese Arbeit hat das Ziel, am Beispiel des ZBW-Veranstaltungskalenders zu zeigen, dass eine Produktstrategie ein wertvolles Instrument ist, um ein Informationsprodukt erfolgreich zu etablieren bzw. weiterzuentwickeln. Dafür werden in Anlehnung an Methoden der strategischen Unternehmensplanung und des Produktmanagements wichtige Einflussfaktoren für das Produkt ZBWVeranstaltungskalender systematisch identifiziert und mittels IST-Analyse, Zielgruppenanalyse sowie Wettbewerbsanalyse unters...

  11. Entwicklung einer Spurendriftkammer mit Mikrostreifenauslese für Schwerionenexperimente

    OpenAIRE

    Frankenfeld, Ulrich

    1996-01-01

    Im Rahmen dieser Arbeit wurde ein Prototyp einer Spurendriftkammer mit Mikrostreifenauslese, wie sie als hochauflösende Spurendetektoren in der Kern- und Teilchenphysik zum Einsatz kommen sollen, konstruiert und getestet. Besonderes Augenmerk lag hierbei auf der Signalform und -verteilung, sowie auf dem Langzeitverhalten. Für die verschiedenen Messungen dieser Arbeit wurden die Mikrostreifen-Gasdetektoren in ein Edelstahlrohr eingebaut, das mit einem Vakuumpumpen-System verbunden ist. Durch E...

  12. Multi-Produkt-Entwicklung - praxisorientierte Werkzeuge und praktische Erfarungen

    DEFF Research Database (Denmark)

    Mortensen, Niels Henrik; Harlou, Ulf

    2005-01-01

    or product families. In production the split between preparation and execution has been one of the main reasons for increased productivity and quality. In product development the same phenomena may occur. The challenges in multiple product development are of many types e.g. strategic (portfolio planning......, risk handling, market, etc.), organizational (transition from platform design to project execution, determining modern procedures, knowledge sourcing etc.) and modeling (requirement specification for a platform, platform definition, evaluation of solutions etc). This chapter is mainly focusing...... on the modeling challenge. We see the need for a whole new range of modeling tools to support multiproduct development. Compared to single product development the contents of all phases changes e.g. requirement definition, conceptualization, evaluation and documentation. As examples explicit product family...

  13. Die Entwicklung des Eigentums- und Gesellschaftsrechts in Estland / Ilmar Selge

    Index Scriptorium Estoniae

    Selge, Ilmar, 1954-

    1992-01-01

    Õigusaktide tõlked: ROW nr. 6, lk. 181-190 (tlk. Ilmar Selge) - Gesetz der Republik Estland über die Grundlagen der Eigentumsreform ; Beschluss des Obersten Rates der Republik Estland über die Anwendung des Gesetzes über die Grundlagen der Eigentumsreform ; Bodenreformgesetz der Republik Estland ; Beschluss des Obersten Rates der Republik Estland über das Inkrafttreten des Bodenreformgesetz der Republik Estland. ROW nr. 10, lk. 307-310 (tlk. Ilmar Selge) - Gesetz der Republik Estland über ausländische Investitionen ; Unternehmenseinkommensteuergesetz (Auszug)

  14. Entwicklung eines amperometrischen Biosensors zur Erfassung von Polyphenolen

    OpenAIRE

    2013-01-01

    In der durchgeführten Arbeit wurden neue Immobilisierungsstrategien zur Etablierung eines amperometrischen Biosensors, welcher Polyphenole erfasst, untersucht. Ziel war es eine „Handheld-Unit“ unter Verwendung einer Dickschichtelektrode (Thick-Film Technology, TFT) zu entwickeln. Zur Erfassung von Polyphenolen wurde das Enzym Laccase ausgewählt, welche die Oxidation von Phenolen zu Chinonen katalysiert. Dabei wurden in dieser Arbe...

  15. Mobiles Lernen in der Schule. Entwicklungs- und Forschungsstand

    OpenAIRE

    Döring, Nicola; Kleeberg, Nicole

    2006-01-01

    Mobiles Lernen meint Lernprozesse, die durch portable Endgeräte (Notebooks, Handhelds, Mobiltelefone) und drahtlose Netzwerke unterstützt werden, wobei universelle und fachspezifische Anwendungen zum Einsatz kommen. Mobiles Lernen in der Schule bedeutet einen flexiblen Zugriff auf die Computertechnologie, die in Form von stationären Rechnern bislang in separaten PC-Räumen vom alltäglichen Lerngeschehen weitgehend abgeschnitten war. Der Übersichtsbeitrag behandelt die technischen Aspekte (Endg...

  16. Entwicklung eines Verfahrens zur Druckmessung in der Kompressionstherapie

    OpenAIRE

    Keserü, Matthias Imre Walter

    2006-01-01

    Einleitung: Da nach Verbrennungen und Verbrühungen, welche neben den Verkehrsunfällen zu den zweithäufigsten Verletzungen im Kindesalter zählen, eine Vielzahl der Kinder mit einer Kopressionstherapie behandelt wurden, stellte sich die Frage, in wie weit eine Kalibrierung und lokalitätsbezogene Druckkontrolle mittels piezoresistivem Drucksensor (PRPS) unter dem Kompressionanzug möglich ist und in welchem Druckbereich die verwendeten Kompressionsanzüge liegen? Material und Methoden: Zur Messung...

  17. Die wirtschaftliche Entwicklung im Inland: Expansion bleibt robust

    OpenAIRE

    2016-01-01

    Die deutsche Konjunktur blieb im ersten Halbjahr aufwärts gerichtet. Die Zunahme des realen Bruttoinlandsprodukts (BIP) entsprach aufs Jahr hochgerechnet in etwa dem Wachstum des gesamtwirtschaftlichen Produktionspotenzials. Allerdings wechselten im zweiten Quartal die Triebkräfte der Konjunktur von der inländischen Verwendung zum Außenbeitrag. Letzterer verbesserte sich aber aufgrund rückläufiger Einfuhren, während die Ausfuhren etwas langsamer expandierten. Getragen wird die Expansion wesen...

  18. Forschung und Entwicklung in Deutschland Rückblick, Einblick, Ausblick

    CERN Document Server

    Geretschläger, Wolfgang

    2003-01-01

    Technology facilities like communications on the internet focus on new challenges to German and European industry. For the time being, theoretical, experimental and applied research is still located in the home countries, while tertial activities are more and more outsourced to low-cost countries, because of cheap manpower, poor laws on working conditions and quasi absence of social insurance. But, cost oriented marketing not only implies the risk to poor the home country on the short term, but also to give away definitly the know-how in R&D. On the other hand, the inventory control of the research sector in the home countries shows that the various partners in research, industry and politics may create other initiatives to optimize the relationship between in- and output in R&D.

  19. BOOK REVIEW: Development of Solar Research - Entwicklung der Sonnenforschung

    Science.gov (United States)

    Sterken, C.; Wittmann, A. D.; Wolfschmidt, G.; Duerbeck, H. W.

    2006-12-01

    This publication contains the Proceedings of a Colloquium on the development of solar research, supplemented with a number of papers which were written especially for this book. The volume contains 14 papers dealing with archeo-astronomy related to the Sun, solar cults, and (mainly) solar research. Ten papers are written in English, the remaining four are in German, but all papers have a quite extensive Abstract in both languages. The volume closes with a comprehensive Name Index. I found this book most pleasant to read with many useful illustrations (more than 120 photographs and reproductions of which about 100 cover truly historic material, quite often from authors' private archives). The first three papers (by A. Haenel, W. Schlosser and R. Hansen) deal with very ancient information: megalithic tombs as solar observatories, the Nebra sky-disk (showing Sun, Moon, Pleiades and other stars), and solar cults. These papers (adding up to about 90 pages) are not only descriptive, but also contain an analysis based on quantitative facts. One paper deals with letters exchanged by astronomers serving as data sources for the counting of sunspots during the Maunder minimum. More specifically, several hundreds of letters by Gottfried Kirch (1639-1710) are being edited and analysed by Klaus-Dieter Herbst. Medieval solar-eclipse maps with totality paths are reproduced in an interesting paper by Robert van Gent, who presents eclipse cartography of as early as 1699 - at least 15 years prior to the generally accepted first such map by Edmond Halley. R. Schielicke's paper on the 1851 Koenigsberg daguerrotype photograph of the solar corona gives interesting details on the history of daguerrotype photography, and has a number of very useful basic references, including OCR-based transcripts of a 1851-dated document describing an early corona daguerrotype (in German). Three consecutive papers (one by H.W. Duerbeck, followed by papers by G. Wolfschmidt and M.P. Seiler) not only reveal scientific history, but also crucial information on how governmental sponsorship, from the 1860s till the end of WW II, modulated the development of solar research. This paper reveals lots of cross-references on scientists and government agents, and also offers insight on the interplay between political actors and scientific researchers. The last paper covers very dense time lines, and also vividly illustrates the military value of basic fundamental research - that is, the forecast of radio propagation disturbances caused by solar flares. This element is also dealt with in the subsequent paper by Hubertus Wohl, on the spectroheliogram archives of the Fraunhofer (now Kiepenheuer) Institute. Accounts of pioneering episodes are given in Axel Wittmann's paper on site testing at La Palma in the early seventies, as well as in the subsequent paper on solar research with stratospheric balloons (by Manuel Vazquez and Axel Wittmann). These authors sketch a very concise but detailed history of civil ballooning, and illustrate this with several images from private archives. Alltogether, this book is well-edited, and offers lots of historical facts for the money.

  20. die Zeitliche entwicklung von abschlussprüferhonoraren in Deutschland

    DEFF Research Database (Denmark)

    Warming-Rasmussen, Bent

    2016-01-01

    Since 2005, German audit clients are obliged to publish auditor fees in the notes to their financial statements. the fees have to be differentiated into four categories: audit services, audit-ralated services, tax advisory services, and other services. Such a disclosure enables stakeholders...... to evaluate auditor independence. the paper analyses the temporal development of auditor fees as well as their composition for the period 2009-2013. Fees for audit services are by far the highest and decline over time. However, this development is exclusively driven by DAX30 Companies. With regard to auditor...... independene, the share of non-audit fees is critical for DAX30 but also for SDAX Companies....