WorldWideScience

Sample records for iii und iv

  1. Transuranium perrhenates: Np(IV), Pu(IV) and (III), Am (III)

    International Nuclear Information System (INIS)

    Silvestre, Jean-Paul; Freundlich, William; Pages, Monique

    1977-01-01

    Synthesis in aqueous solution and by solid state reactions, crystallographical characterization and study of the stability of some transuranium perrhenates: Asup(n+)(ReO 4 - )sub(n) (A=Np(IV), Pu(IV), Pu(III), Am(III) [fr

  2. Satellitenbewegung, band III: Natiirliche und gesteuerte bewegung.

    Science.gov (United States)

    Jochim, E. F.

    2014-12-01

    Im dritten Band der Satellitenbewegung werden in fortlaufender Nummerierung einige für Untersuchungen der Bewegung der künstlichen Satelliten wichtige Grundlagen der Astrodynamik mit ausführlichen mathematischen Formelsystemen behandelt. Dazu zählen die unterschiedlichen Aspekte der Bewegung der natürlichen Himmelskörper, die Steuerung und Kontrolle von künstlichen Objekten, und insbesondere die für eine Satellitenbahnanalyse wichtigen physikalischen Beeinflussungen einer Satellitenbewegung. Mathematisch entscheidend ist die Wahl geeigneter Bahnparameter, die ein bestimmtes Bewegungsproblem widerspruchsfrei und singularitätenfrei zu behandeln gestatten. Für die Behandlung routinemäßiger Aufgabenstellungen der Satellitenbewegung, in erster Linie einer präzisen Bahnbestimmung und Bahnverbesserung, kann auf eine Fülle von lehrbuchartigen Monographien verwiesen werden, so dass diese Problematik in der vorliegenden Arbeit nur angedeutet werden soll.

  3. Cranial nerves III, IV and VI

    International Nuclear Information System (INIS)

    Laine, I.J.; Smoker, W.R.; Kuta, A.J.; Felton, W.L.

    1991-01-01

    Because of advances in CT and MR imaging, accurate identification and evaluation of cranial nerve lesions is now possible. Cranial nerves III, IV, and VI, providing motor and sensory control of the eye, can be evaluated as a unit. In this paper, the authors present an overview of the anatomy and pathology of these cranial nerves. We first illustrate their normal anatomic pathways from the brain stem to the orbit. This is followed by clinical examples of patients with a variety of isolated and complex palsies of these three cranial nerves. This is accomplished by inclusion of ocular photographs, correlative imaging studies, and the use of diagrams. Knowledge of the gross and imaging anatomy and the ophthalmologic manifestations of pathology affecting these three cranial nerves permits a tailored approach to their evaluation

  4. Patientenakzeptanz und Verträglichkeit von Risedronat zur Osteoporosetherapie - Ergebnisse einer Phase IV-Studie

    Directory of Open Access Journals (Sweden)

    Pusch HH

    2001-01-01

    Full Text Available Anwendungsbeobachtungen (Phase IV-Studien haben nach den erfolgreich absolvierten klinischen Prüfungen (Phase III den Zweck, die Verträglichkeit, Sicherheit, Compliance und Akzeptanz eines Präparates in der täglichen praktischen Medizin zu erfassen und auszuwerten. Eine AWB ist prospektiv aufgebaut. Die 1121 in dieser Studie erfaßten Patienten stellen ein solides Fundament für die statistische Aufarbeitung der erhobenen Daten dar. Die Ergebnisse zu den Themen Patientendaten, Diagnosestellung, Risikofaktoren, Frakturen und Mobilität zeigen deutlich, daß hier ein spezielles Patientengut vorliegt: Der Patient mit Osteoporose mit den typischen alterskorrelierten Begleiterkrankungen. Die Osteoporose verläuft, so lange keine Frakturen eintreten, praktisch schmerzfrei - ein Grund, warum diese Erkrankung so oft und so lange ignoriert wird. Begleitende Beschwerden gehen nach der derzeitigen Lehrmeinung stets auf degenerative oder entzündlich-rheumatische Prozesse am Bewegungsapparat zurück. Aus diesem Blickwinkel bieten die Ergebnisse dieser Studie eine Überraschung: Die im Bereich der Wirbelsäule beobachtete und statistisch hochsignifikante Schmerzlinderung. Sie läßt sich jedoch mit der Hemmung des Knochenabbaues durch Risedronat alleine nicht befriedigend erklären. Möglicherweise liegen hier andere, bisher unbekannte pharmakologische Effekte dieser Substanz vor. Zusätzliche Hinweise ergeben sich daraus, daß beim Mb. Paget ähnliche Wirkungen auf die Begleitschmerzen bei Bisphosphonatbehandlung berichtet wurden. Die analgetische Wirkung von Calcitonin ist bekannt, sie beruht auf einer zentralnervösen Wirkung, ebenso wie auf der Hemmung der Freisetzung von freien Kalzium-Ionen, die als Schmerzmediator angesehen werden, aus dem Knochen. Vielleicht liegen hier vergleichbare Effekte vor, die in den Phase II und III Studien nicht zutage treten konnten. Diese überraschenden Ergebnisse sollten Anlaß für weitere Forschungen sein. Die

  5. DSM-IV und DSM-5: Was hat sich tatsächlich verändert?

    OpenAIRE

    Ehret, Anna M.; Berking, Matthias

    2013-01-01

    Im Mai 2013 ist die fünfte Auflage des Diagnostischen und Statistischen Manuals Psychischer Störungen (DSM-5) der American Psychiatric Association erschienen. Um die Vor- und Nachteile des DSM-5 beurteilen und gegebenenfalls in Forschung und Praxis angemessen berücksichtigen zu können, sollten Wissenschaftler und Praktiker gleichermaßen über die Änderungen gegenüber dem DSM-IV informiert sein. In diesem Beitrag werden die wesentlichen Unterschiede zwischen dem DSM-IV und DSM-5 beschrieben. Ze...

  6. Dissimilatory Fe(III) and Mn(IV) reduction.

    Science.gov (United States)

    Lovley, D R

    1991-06-01

    The oxidation of organic matter coupled to the reduction of Fe(III) or Mn(IV) is one of the most important biogeochemical reactions in aquatic sediments, soils, and groundwater. This process, which may have been the first globally significant mechanism for the oxidation of organic matter to carbon dioxide, plays an important role in the oxidation of natural and contaminant organic compounds in a variety of environments and contributes to other phenomena of widespread significance such as the release of metals and nutrients into water supplies, the magnetization of sediments, and the corrosion of metal. Until recently, much of the Fe(III) and Mn(IV) reduction in sedimentary environments was considered to be the result of nonenzymatic processes. However, microorganisms which can effectively couple the oxidation of organic compounds to the reduction of Fe(III) or Mn(IV) have recently been discovered. With Fe(III) or Mn(IV) as the sole electron acceptor, these organisms can completely oxidize fatty acids, hydrogen, or a variety of monoaromatic compounds. This metabolism provides energy to support growth. Sugars and amino acids can be completely oxidized by the cooperative activity of fermentative microorganisms and hydrogen- and fatty-acid-oxidizing Fe(III) and Mn(IV) reducers. This provides a microbial mechanism for the oxidation of the complex assemblage of sedimentary organic matter in Fe(III)- or Mn(IV)-reducing environments. The available evidence indicates that this enzymatic reduction of Fe(III) or Mn(IV) accounts for most of the oxidation of organic matter coupled to reduction of Fe(III) and Mn(IV) in sedimentary environments. Little is known about the diversity and ecology of the microorganisms responsible for Fe(III) and Mn(IV) reduction, and only preliminary studies have been conducted on the physiology and biochemistry of this process.

  7. Level III and IV Ecoregions of the Continental United States

    Science.gov (United States)

    Information and downloadable maps and datasets for Level III and IV ecoregions of the continental United States. Ecoregions are areas of general similarity in the type, quality, and quantity of environmental resources.

  8. [Walter Leitsch. Sigismund III. von Polen und Jan Zamoysky : die Rolle Estlands in der Rivalität zwischen König und Hetman] / Martin Faber

    Index Scriptorium Estoniae

    Faber, Martin

    2009-01-01

    Arvustus: Leitsch, Walter. Sigismund III. von Polen und Jan Zamoysky : die Rolle Estlands in der Rivalität zwischen König und Hetman. Wien : Verlag der Österreichischen Akademie der Wissenschaften, 2006

  9. Alimentos industrializados congelados gama III y IV

    OpenAIRE

    Tupone Reverter, Paula

    2012-01-01

    El presente estudio tiene como objetivo, indagar sobre el consumo, el grado de información y contenido de sodio, grasas saturadas y colesterol de los principales alimentos congelados Gama III y V consumidos por los encuestados. A partir de esto, se realiza una encuesta de frecuencia de consumo y preguntas varias a 250 personas de entre 30 a 60 años, que concurren a cuatro supermercados de la ciudad de Mar del Plata, para determinar el conocimiento por parte de los encuestados e...

  10. Synthesis and reactivity of triscyclopentadienyl uranium (III) and (IV) complexes

    International Nuclear Information System (INIS)

    Berthet, J.C.

    1992-01-01

    The reactions of (RC 5 H 4 ) 3 U with R=trimethylsilylcyclopentadienyl or tertiobutylcyclopentadienyl are studied for the synthesis of new uranium organometallic compounds. Reactions with sodium hydride are first described uranium (III) anionic hydrides obtained are oxidized for synthesis of stable uranium (IV) organometallic hydrides. Stability of these compounds is discussed. Reactivity of these uranium (III) and (IV) hydrides are studied. Formation of new binuclear compounds with strong U-O and U-N bonds is examined and crystal structure are presented. Monocyclooctatetraenylic uranium complexes are also investigated

  11. Structural characterization of the Actinides (III) and (IV) - DOTA complexes

    International Nuclear Information System (INIS)

    Audras, Matthieu

    2014-01-01

    The polyamino-carboxylate anions have been identified as compounds of interest in the operations of actinide separation, in actinide migration in the environment and in human radio-toxicology. The structural characterization of complexes formed between actinides and polyamino-carboxylates ligands is essential for a better understanding of actinide-ligands interactions. Among the polyamino-carboxylate anions, the DOTA ligand (1,4,7,10-tetraaza-cyclododecane tetraacetic acid) is described as a very strong complexing agent of the lanthanides(III), but has been little studied with actinides. The objective of this thesis is to describe the complexes formed between the actinides (III) and (IV) and the DOTA ligand, and compare them with the lanthanide complexes. For this, an approach has been introduced to characterize the complexes by complementary analytical techniques (spectrophotometry, electro-spray ionization mass spectrometry, NMR, EXAFS, electrochemistry), but also by calculations of theoretical chemistry to help the interpretation of the experimental data. The formation of a 1:1 complex is observed with the actinides(III) (plutonium and americium) as for lanthanides(III): rapid formation of intermediate species which evolves slowly towards the formation of a limit complex. Within this complex, the cation is located inside the cavity formed by the ligand. Four nitrogen atoms and four oxygen atoms from the carboxylate functions are involved in the coordination sphere of the cation. However, differences were observed in the bond lengths formed between the cation and the nitrogen atoms (the bonds are somewhat shorter in the case of actinide complexes) as well as the complexation kinetics, which is slightly faster for the actinides(III) than for lanthanide(III) ions of equivalent radius. The same behavior was observed in solution upon complexation of actinides(IV) (uranium, plutonium and neptunium): slow formation of a 1:1 complex (actinide(IV):ligand) in wherein the

  12. Locally advanced breast cancer (stage III and stage IV)

    International Nuclear Information System (INIS)

    Baracat, F.F.; Grabert, H.; Lima, G.R. de; Pontes, M.; Ferraro, O.; Santana, A.; Brook, E.S.

    1987-01-01

    The results concerning to the treatment of 193 patients with locally advanced breast cancer-stage III and stage IV are analysed. All the patients were treated with radical radiotherapy plus total mastectomy about 6 weeks later; 53 pacients received also chemotherapy (CMF - 12 courses) and 52 were oophorectomized. (M.A.C) [pt

  13. Interventional therapy of hilar cholangiocarcinoma in type III and IV

    International Nuclear Information System (INIS)

    Fan Weijun; Wu Peihong; Zhang Liang; Huang Jinhua; Zhang Fujun; Gu Yangkui; Zhao Ming; Huang Xianglong; Guo Changyu

    2005-01-01

    Objective: To explore the role of synthetic interventional therapy for hilar cholangiocarcinoma in type III and IV. Methods: Twenty-one patients with obstructive cholestasis were pathological confirmed as cholangioadenocarcinoma, and they were classified as type III and IV cholangioadenocarcinoma by CT, MRCP, and percutaneous transhepatic cholangiography. Percutaneous transhepatic cholangiography with internal and external drainage (PTCD), multipolar radiofrequency (RF) ablation, biliary stent endoprosthesis, and interventional adjuvant chemotherapy were applied sequentially. Results: All masses presented with density diminution in CT one month after RF ablation, in which 13 masses had about 30% reduction in size, 4 masses had about 20% reduction in size, and 4 masses remained unchanged. All the masses presented with size reduction with an average of 37% in follow-up CT after 6 months, and the most remarkable size reduction was 60%. The direct and indirect bilirubin levels prompt returned to normal range in 17 cases one month after synthetic interventional therapy and returned to normal range in all cases 6 months later. All patients survived with the follow-up period ranging from 9 to 24 months, with the mean survival time of 14 months. Conclusion: Synthetic interventional therapy is a micro-invasive and effective treatment for type III and IV cholangiocarcinoma. (authors)

  14. Hereditary sensory and autonomic neuropathies: types II, III, and IV

    Directory of Open Access Journals (Sweden)

    Axelrod Felicia B

    2007-10-01

    Full Text Available Abstract The hereditary sensory and autonomic neuropathies (HSAN encompass a number of inherited disorders that are associated with sensory dysfunction (depressed reflexes, altered pain and temperature perception and varying degrees of autonomic dysfunction (gastroesophageal reflux, postural hypotention, excessive sweating. Subsequent to the numerical classification of four distinct forms of HSAN that was proposed by Dyck and Ohta, additional entities continue to be described, so that identification and classification are ongoing. As a group, the HSAN are rare diseases that affect both sexes. HSAN III is almost exclusive to individuals of Eastern European Jewish extraction, with incidence of 1 per 3600 live births. Several hundred cases with HSAN IV have been reported. The worldwide prevalence of HSAN type II is very low. This review focuses on the description of three of the disorders, HSAN II through IV, that are characterized by autosomal recessive inheritance and onset at birth. These three forms of HSAN have been the most intensively studied, especially familial dysautonomia (Riley-Day syndrome or HSAN III, which is often used as a prototype for comparison to the other HSAN. Each HSAN disorder is likely caused by different genetic errors that affect specific aspects of small fiber neurodevelopment, which result in variable phenotypic expression. As genetic tests are routinely used for diagnostic confirmation of HSAN III only, other means of differentiating between the disorders is necessary. Diagnosis is based on the clinical features, the degree of both sensory and autonomic dysfunction, and biochemical evaluations, with pathologic examinations serving to further confirm differences. Treatments for all these disorders are supportive.

  15. Explorations of new phases in the Ga(III)/In(III)-Mo(VI)-Se(IV)/Te(IV)-O systems.

    Science.gov (United States)

    Kong, Fang; Hu, Chun-Li; Hu, Ting; Zhou, Yong; Mao, Jiang-Gao

    2009-07-07

    Systematic explorations of new phases in the Ga(III)/In(III)-Mo(VI)-Se(IV)/Te(IV)-O systems by hydrothermal syntheses or solid-state reactions at high-temperature led to four new quaternary compounds, namely, Ga(2)MoQ(2)O(10) (Q = Se, Te), In(2)Mo(2)Se(2)O(13)(H(2)O) and In(2)MoTe(2)O(10). Ga(2)MoQ(2)O(10) (Q = Se, Te) are isostructural and their structures feature a 3D network of gallium selenite/tellurite with 12-member ring tunnels along b-axis, the distorted MoO(6) octahedra are attached on the wall of the above tunnels. The structure of In(2)Mo(2)Se(2)O(13)(H(2)O) features a new pillared-layered architecture composed of 2D indium(III) selenite layers that are interconnected by Mo(2)O(10) dimers, forming 8-membered ring tunnels along the b-axis. The structure of In(2)MoTe(2)O(10) features a 2D indium oxide layer formed by corner- and edge-sharing InO(6) and InO(7) polyhedra with MoO(4) tetrahedra and TeO(n) (n = 4, 5) polyhedra hanging on both sides of the layer, there are weak interlayer Te-O bonds of 2.512 A. Results of optical diffuse reflectance spectrum measurements indicate that all four compounds are insulators, which are in agreement with results of band structure calculations based on DFT methods.

  16. Organic / IV, III-V Semiconductor Hybrid Solar Cells

    Directory of Open Access Journals (Sweden)

    Pang-Leen Ong

    2010-03-01

    Full Text Available We present a review of the emerging class of hybrid solar cells based on organic-semiconductor (Group IV, III-V, nanocomposites, which states separately from dye synthesized, polymer-metal oxides and organic-inorganic (Group II-VI nanocomposite photovoltaics. The structure of such hybrid cell comprises of an organic active material (p-type deposited by coating, printing or spraying technique on the surface of bulk or nanostructured semiconductor (n-type forming a heterojunction between the two materials. Organic components include various photosensitive monomers (e.g., phtalocyanines or porphyrines, conjugated polymers, and carbon nanotubes. Mechanisms of the charge separation at the interface and their transport are discussed. Also, perspectives on the future development of such hybrid cells and comparative analysis with other classes of photovoltaics of third generation are presented.

  17. ACME-III and ACME-IV Final Campaign Reports

    Energy Technology Data Exchange (ETDEWEB)

    Biraud, S. C. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

    2016-01-01

    The goals of the Atmospheric Radiation Measurement (ARM) Climate Research Facility’s third and fourth Airborne Carbon Measurements (ACME) field campaigns, ACME-III and ACME-IV, are: 1) to measure and model the exchange of CO2, water vapor, and other greenhouse gases by the natural, agricultural, and industrial ecosystems of the Southern Great Plains (SGP) region; 2) to develop quantitative approaches to relate these local fluxes to the concentration of greenhouse gases measured at the Central Facility tower and in the atmospheric column above the ARM SGP Central Facility, 3) to develop and test bottom-up measurement and modeling approaches to estimate regional scale carbon balances, and 4) to develop and test inverse modeling approaches to estimate regional scale carbon balance and anthropogenic sources over continental regions. Regular soundings of the atmosphere from near the surface into the mid-troposphere are essential for this research.

  18. CANDU technology for generation III + AND IV reactors

    International Nuclear Information System (INIS)

    Torgerson, D.F.

    2005-01-01

    Atomic Energy of Canada Limited (AECL) is the original developer of the CANDU?reactor, one of the three major commercial power reactor designs now used throughout the world. For over 60 years, AECL has continued to evolve the CANDU design from the CANDU prototypes in the 1950s and 1960s through to the second generation reactors now in operation, including the Generation II+ CANDU 6. The next phase of this evolution, the Generation III+ Advanced CANDU ReactorTM (ACRTM), continues the strategy of basing next generation technology on existing CANDU reactors. Beyond the ACR, AECL is developing the Generation IV CANDU Super Critical Water Reactor. Owing to the evolutionary nature of these advanced reactors, advanced technology from the development programs is also being applied to operating CANDU plants, for both refurbishments and upgrading of existing systems and components. In addition, AECL is developing advanced technology that covers the entire life cycle of the CANDU plant, including waste management and decommissioning. Thus, AECL maintains state-of-the-art expertise and technology to support both operating and future CANDU plants. This paper outlines the scale of the current core knowledge base that is the foundation for advancement and support of CANDU technology. The knowledge base includes advancements in materials, fuel, safety, plant operations, components and systems, environmental technology, waste management, and construction. Our approach in each of these areas is to develop the underlying science, carry out integrated engineering scale tests, and perform large-scale demonstration testing. AECL has comprehensive R and D and engineering development programs to cover all of these elements. The paper will show how the ongoing expansion of the CANDU knowledge base has led to the development of the Advanced CANDU Reactor. The ACR is a Generation III+ reactor with substantially reduced costs, faster construction, and enhanced passive safety and operating

  19. Samarium (III Selective Membrane Sensor Based on Tin (IV Boratophosphate

    Directory of Open Access Journals (Sweden)

    Ashok S. K. Kumar

    2004-08-01

    Full Text Available Abstract: A number of Sm (III selective membranes of varying compositions using tin (IV boratophosphate as electroactive material were prepared. Polyvinyl chloride, polystyrene and epoxy resin were used as binding materials. Membrane having composition of 40% exchanger and 60% epoxy resin exhibited best performance. This membrane worked well over a wide concentration range of 1x10-5M to 1x10-1 M of samarium ions with a Super-Nernstian slope of 40 mV/decade. It has a fast response time of less than 10 seconds and can be used for at least six months without any considerable divergence in potentials. The proposed sensor revealed good selectivities with respect to alkali, alkaline earth, some transition and rare earth metal ions and can be used in the pH range of 4.0-10.0. It was used as an indicator electrode in the potentiometric titration of Sm (III ions against EDTA. Effect of internal solution was studied and the electrode was successfully used in non-aqueous media, too.

  20. Redox behavior of Ce(IV)/Ce(III) in the presence of nitrilotriacetic acid: a surrogate study for An(IV)/An(III) redox behavior

    International Nuclear Information System (INIS)

    Suzuki, Y.; Nankawa, T.; Ohnuki, T.; Francis, A.J.

    2010-01-01

    Using cyclic voltammetry, we investigated the redox behavior of Ce(IV)/Ce(III), which is a surrogate for An(IV)/An(III) (An = actinides), in a solution of nitrilotriacetic acid (NTA) at 25 C. The cyclic voltammogram of Ce in a 0.1 M NTA solution at pH 6 showed a reversible one-electron redox reaction for Ce(IV)/Ce(III) at 0.51 V vs. Ag/AgCl. This redox potential was much lower than that obtained in 1 M nitric acid, indicating that Ce(IV) was preferentially stabilized by complexation with NTA. The redox potential in the NTA solution was independent of the Ce concentration from 2 to 20 mM, NTA concentration from 5 to 200 mM and pH between 3 and 7. These results indicated that no polymerization and no additional coordination of NTA and OH to the Ce(III)-NTA complex took place during the redox reaction. As the speciation calculation of Ce(III) in the NTA solution showed that the predominant species was Ce III (nta) 2 3 (H 3 nta = NTA), the redox reaction of the Ce-NTA complex was expressed by the following: Ce IV (nta) 2 2- + e - ↔ Ce III (nta) 2 3 . The logarithm of the stability constant of Ce IV (nta) 2 2- was calculated to be 38.6 ± 0.8 for I = 0 from the redox potential shift of Ce(IV)/Ce(III) in the NTA solution. The value was in good accordance with the stability constant of the Np IV (nta) 2 2- complex, demonstrating that the aqueous coordination chemistry of Ce(IV) with NTA is quite similar to that of An(IV). These results strongly suggest that a negative shift of the Pu(IV)/Pu(III) redox potential in the NTA solution should make Pu(IV) more stable than Pu(III) even in a reducing environment. (orig.)

  1. Controlling applied to information processing: quality management applied to IP projects and IP services; Informationsverarbeitungs-Controlling: Qualitaetsmanagement fuer IV-Projekte und fuer IV-Service

    Energy Technology Data Exchange (ETDEWEB)

    Becker, B. [Vereinigung Deutscher Elektrizitaetswerke e.V. (VDEW), Frankfurt am Main (Germany); Beckers, F. [Isar-Amperwerke AG, Muenchen (Germany); Dewald, N. [Bayernwerk AG, Muenchen (Germany); Hauffe, P. [Pfalzwerke AG, Ludwigshafen am Rhein (Germany); Hein, F. [EVS AG Stuttgart (Germany); Hoederath, M. [Vereinigte Elektrizitaetswerke Westfalen AG (VEW), Dortmund (Germany); Seyen, R. [Staedtische Werke Nuernberg GmbH (Germany)

    1998-01-12

    The working group on information processing (IP) basics (in German: `IV-Grundlagen`) has prepared this contribution dealing with controlling applied to information processing. This new report, on the one hand, takes into consideration the role of the organizational IP unit as one offering its services to all sections of a company. On the other hand, information processing as an operational infrastructure influencing all business processes becomes increasingly important with respect to the competitiveness of the EVU. Therefore, quality management applied to IP projects and IP services must support this development. (orig./RHM) [Deutsch] Der VDEW Arbeitskreis `IV-Grundlagen` hat einen Beitrag zum Controlling fuer die Informationsverarbeitung erstellt. Hier geht zum einen die Rolle der Organisationseinheit IV als Dienstleister fuer alle Unternehmensbereiche ein. Zum anderen gewinnt die Informationsverarbeitung als betriebliche Infrastruktur fuer alle Geschaeftsprozesse zunehmende Bedeutung fuer die Wettbewerbsfaehigkeit der EVU. Das Qualitaetsmanagement fuer IV-Projekte und fuer IV-Service muss dies unterstuetzen. (orig./RHM)

  2. Contributions to ecosystem research and environmental education III; Beitraege zur Oekosystemforschung und Umwelterziehung III

    Energy Technology Data Exchange (ETDEWEB)

    Erdmann, K H [ed.; Nauber, J [ed.

    1996-09-01

    The publication comprises the following chapters: Contributions to the implementation of findings in policy and administration; Contributions to biosphere reservations; Contributions to ecosystems research; Contributions to environmental education. The first chapter discusses environmental protection from the political point of view, while the second chapter describes biosphere reservations world-wide as well as their protection, conservation and development. (SR) [Deutsch] Die vorliegende Veroeffentlichung teilt sich in folgende Kapitel auf: Beitraege zur Umsetzung von Erkenntnissen in Politik und Verwaltung, Beitraege zu Biosphaerenreservaten, Beitraege zur Oekosystemforschung sowie Beitraege zur Umwelterziehung. Im ersten Kapitel wird der Umweltschutz von der politischen Seite aus beleuchtet. Das zweite Kapitel beschreibt verschiedene Biosphaerenreservate in der ganzen Welt und deren Schutz, Pflege und Entwicklung. Das dritte Kapitel beinhaltet Beitraege zur oekologischen Forschung. Abschliessend werden im letzten Kapitel psychologische Aspekte der Umwelterziehung dargestellt. (SR)

  3. An original accelerated radiotherapy schedule in stage III to IV head and neck cancers. Results in a multicenter setting

    Energy Technology Data Exchange (ETDEWEB)

    Allal, A.S. [Geneva Univ. Hospital (Switzerland). Div. of Radiation Oncology; Monney, M.; Rosset, A.; Ozsahin, M. [Hopital Cantonal Universitaire, Lausanne (Switzerland). Inst. de Radiographie; Guillemin, C. [Cantonal Radiotherapy Department Sion (Switzerland)

    2000-01-01

    Background: Accelerated radiotherapy delivery has recently been shown to be effective in overcoming repopulation during fractionated radiotherapy. The therapeutic ratio may be particularly favorable for 5-week regimens. This study reports the feasibility and results of a particular accelerated schedule in Stage III to IV head and neck carcinomas used in a multicenter setting. Patients and Methods: Seventy-four patients with Stage III (26 patients) or IV (48 patients) head and neck carcinomas were treated with a 5-week accelerated schedule (69.9 to 69.8 Gy in 41 to 40 fractions over a period of 35 to 36 days). Treatment began with 20 Gy in 10 daily fractions to initial involved sites, followed by bi-fractionated radiotherapy (2x1.6 Gy to 1.66 Gy/day) to a larger head and neck volume. Thirty-six (49%) patients received induction chemotherapy (median 3 cycles, range 1 to 4 cycles). Results: Grade 3 or 4 (RTOG) confluent mucositis was observed in 57 patients (77%) and Grade 3 dysphagia in 33 patients (44%). Grade 3 or 4 (RTOG-EORTC) late complications were scored in 10.5% of cases. The 5-year actuarial locoregional control rate was 56% (95% CI: 42 to 71). The 5-year overall actuarial survival was 32% (95% CI: 18 to 46). Induction chemotherapy was not associated with a more favorable outcome. Conclusions: This study demonstrates the feasibility of this schedule in a multicenter setting. The oncologic results appear similar to those obtained by other accelerated regimens, while the rate of late complications seems acceptable. Five-week accelerated regimens warrant further evaluation, particularly in conjunction with concomitant chemotherapy, in the framework of prospective trials. (orig.) [German] Hintergrund: Die Wirksamkeit der akzelerierten Bestrahlung in bezug auf die Bewaeltigung der Tumorzellrepopulation waehrend einer Radiotherapie ist vor kurzem nachgewiesen worden. Das Verhaeltnis zwischen therapeutischem Effekt und Toxizitaet duerfte fuer fuenfwoechige Schemen

  4. [Diagnostic values of serum type III procollagen N-terminal peptide in type IV gastric cancer].

    Science.gov (United States)

    Akazawa, S; Fujiki, T; Kanda, Y; Kumai, R; Yoshida, S

    1985-04-01

    Since increased synthesis of collagen has been demonstrated in tissue of type IV gastric cancer, we attempted to distinguish type IV gastric cancer from other cancers by measuring serum levels of type III procollagen N-terminal peptide (type III-N-peptide). Mean serum levels in type IV gastric cancer patients without metastasis were found to be elevated above normal values and developed a tendency to be higher than those in types I, II and III gastric cancer patients without metastasis. Highly positive ratios were found in patients with liver diseases including hepatoma and colon cancer, biliary tract cancer, and esophageal cancer patients with liver, lung or bone metastasis, but only 2 out of 14 of these cancer patients without such metastasis showed positive serum levels of type III-N-peptide. Positive cases in patients with type IV gastric cancer were obtained not only in the group with clinical stage IV but also in the groups with clinical stages II and III. In addition, high serum levels of type III-N-peptide in patients with type IV gastric cancer were seen not only in the cases with liver, lung or bone metastasis but also in cases with disseminated peritoneal metastasis alone. These results suggest that if the serum level of type III-N-peptide is elevated above normal values, type IV gastric cancer should be suspected after ruling out liver diseases, myelofibrosis and liver, lung or bone metastasis.

  5. Facile and reversible formation of iron(III)-oxo-cerium(IV) adducts from nonheme oxoiron(IV) complexes and cerium(III)

    Energy Technology Data Exchange (ETDEWEB)

    Draksharapu, Apparao; Rasheed, Waqas; Klein, Johannes E.M.N.; Que, Lawrence Jr. [Department of Chemistry and Center for Metals in Biocatalysis, University of Minnesota, Minneapolis, MN (United States)

    2017-07-24

    Ceric ammonium nitrate (CAN) or Ce{sup IV}(NH{sub 4}){sub 2}(NO{sub 3}){sub 6} is often used in artificial water oxidation and generally considered to be an outer-sphere oxidant. Herein we report the spectroscopic and crystallographic characterization of [(N4Py)Fe{sup III}-O-Ce{sup IV}(OH{sub 2})(NO{sub 3}){sub 4}]{sup +} (3), a complex obtained from the reaction of [(N4Py)Fe{sup II}(NCMe)]{sup 2+} with 2 equiv CAN or [(N4Py)Fe{sup IV}=O]{sup 2+} (2) with Ce{sup III}(NO{sub 3}){sub 3} in MeCN. Surprisingly, the formation of 3 is reversible, the position of the equilibrium being dependent on the MeCN/water ratio of the solvent. These results suggest that the Fe{sup IV} and Ce{sup IV} centers have comparable reduction potentials. Moreover, the equilibrium entails a change in iron spin state, from S=1 Fe{sup IV} in 2 to S=5/2 in 3, which is found to be facile despite the formal spin-forbidden nature of this process. This observation suggests that Fe{sup IV}=O complexes may avail of reaction pathways involving multiple spin states having little or no barrier. (copyright 2017 Wiley-VCH Verlag GmbH and Co. KGaA, Weinheim)

  6. U.S. Level III and IV Ecoregions (U.S. EPA)

    Data.gov (United States)

    U.S. Environmental Protection Agency — This map service displays Level III and Level IV Ecoregions of the United States and was created from ecoregion data obtained from the U.S. Environmental Protection...

  7. Coulometric microdetermination of organic compounds with manganese(III) and cerium(IV)

    International Nuclear Information System (INIS)

    Chateau-Gosselin, M.; Patriarche, G.J.

    1977-01-01

    The oxidation of compounds such as hydroquinon, p-aminophenol, paracetamol and phenacetin was performed using cerium(IV) and manganese(III) coulometrically electrogenerated. Quantitative results obtained are excellent even at the microscale level. (author)

  8. Direct spectrophotometric analysis of low level Pu (III) in Pu(IV) nitrate solution

    International Nuclear Information System (INIS)

    Mageswaran, P.; Suresh Kumar, K.; Kumar, T.; Gayen, J.K.; Shreekumar, B.; Dey, P.K.

    2010-01-01

    Among the various methods demonstrated for the conversion of plutonium nitrate to its oxide, the oxalate precipitation process either as Pu (III) or Pu (IV) oxalate gained wide acceptance. Since uranous nitrate is the most successful partitioning agent used in the PUREX process for the separation of Pu from the bulk amount of U, the Pu (III) oxalate precipitation of the purified nitrate solution will not give required decontamination from U. Hence Pu IV oxalate precipitation process is a better option to achieve the end user's specified PuO 2 product. Prior to the precipitation process, ensuring of the Pu (IV) oxidation state is essential. Hence monitoring of the level of Pu oxidation state either Pu (III) or Pu (IV) in the feed solution plays a significant role to establish complete conversion of Pu (III). The method in vogue to estimate Pu(lV) content is extractive radiometry using Theonyl Trifluoro Acetone (TTA). As the the method warrants a sample preparation with respect to acidity, a precise measurement of Pu (IV) without affecting the Pu(III) level in the feed sample is difficult. Present study is focused on the exploration of direct spectrophotometry using an optic fiber probe of path length of 40mm to monitor the low level of Pu(III) after removing the bulk Pu(lV) which interfere in the Pu(III) absorption spectrum, using TTA-TBP synergistic mixture without changing the sample acidity

  9. On the determination of Zr(IV), Ce((III), Th(IV) and U(VI) in organic phase using arsenazo-I and arsenazo-III

    International Nuclear Information System (INIS)

    El-Sweify, F.H.; Kamel, M.M.; Shabana, R.

    1997-01-01

    Some organic extractants of different types, namely tridodecylamine (TDA), tricapryl methyl ammonium chloride (TCMA), di(2-ethylhexyl) phosphoric acid (HDEHP) and 1-[thenoyl-(2)]-3,3,3-trifluoroacetone (HTTA) in xylene have been used to study the extraction behaviour of coloured complexes of Zr(IV), Ce(III), Th(IV) and U(VI) from slightly acidic aqueous solutions of arsenazo-III. Spectrophotometric study for the determination of the aforementioned elements, as well as the colouring agents arsenazo-I and arsenazo-III in the organic phase has been carried out. Some factors affecting the spectrophotometric determination of these elements were studied. These factors were hydrogen ion concentration, concentration of the colouring agents in the aqueous phase and diluent type. Absorption spectra and standard curves are given. The molar extinction coefficients have been calculated. 10 figs

  10. Electrochemistry and Spectroelectrochemistry of the Pu (III/IV) and (IV/VI) Couples in Nitric Acid Systems

    Energy Technology Data Exchange (ETDEWEB)

    Lines, Amanda M. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352; Adami, Susan R. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352; Casella, Amanda J. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352; Sinkov, Sergey I. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352; Lumetta, Gregg J. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352; Bryan, Samuel A. [Nuclear Chemistry and Engineering, Pacific Northwest National Laboratory, Richland WA 99352

    2017-09-20

    The solution chemistry of Pu in nitric acid is explored via electrochemistry and spectroelectrochemistry. By utilizing and comparing these techniques, an improved understanding of Pu behavior and its dependence on nitric acid concentration can be achieved. Here the Pu (III/IV) couple is characterized using cyclic voltammetry, square wave voltammetry, and a spectroelectrochemical Nernst step. Results indicate the formal reduction potential of the couple shifts negative with increasing acid concentration and reversible electrochemistry is no longer attainable above 6 M HNO3. Spectroelectrochemistry is also used to explore the irreversible oxidation of Pu(IV) to Pu(VI) and shine light on the mechanism and acid dependence of the redox reaction.

  11. Spectroscopy and electrochemistry of U(IV/III) in basic AlCl3-EMIC

    International Nuclear Information System (INIS)

    Anderson, C.J.; Deakin, M.R.; Choppin, G.R.; Heerman, L.; D'Olieslager, W.; Pruett, D.J.

    1990-01-01

    The electrochemistry of U(IV) has been investigated in the solvent AlCl 3 -1-ethyl-3-methyl imidazolium chloride (EMIC), a room temperature ionic liquid. In basic solutions ( 3 ) the reduction of U(IV) to U(III) on glassy carbon electrodes is reversible. Spectroscopic data as well as measurements of the formal potential for U(IV)/U(III) as a function of the basic melt composition indicate that U(IV) and U(III) are both hexachloro anions. Diffusion coefficients for these species have been measured by two methods. The values are comparable to those of transition metal hexachloro complexes in the same solvent, supporting the assignment of UCl 6 2- and UCl 6 3-

  12. New spectroscopic results in Xe II, Xe III, and Xe IV

    OpenAIRE

    Reyna Almandos, Jorge Guillermo; Gallardo, Mario; Garavaglia, Mario J.

    1982-01-01

    New results obtained in spontaneous xenon spectrum employing a conventional pulsed gaseous laser tube as light source, are presented in this work. A total of 626 spectral lines has been ionically assigned as follows: 50 to Xe II spectrum, 103 to Xe III spectrum, arid 222 to Xe IV spectrum. 30 Lines previously assigned to Xe II were reassigned as belonging to Xe III, 94 lines were assigned with some doubts to Xe II-III spectrum and 84 lines to Xe Ill-IV spectrum. Also there were clas...

  13. Postsynthesis Modification of a Metallosalen-Containing Metal-Organic Framework for Selective Th(IV)/Ln(III) Separation.

    Science.gov (United States)

    Guo, Xiang-Guang; Qiu, Sen; Chen, Xiuting; Gong, Yu; Sun, Xiaoqi

    2017-10-16

    An uncoordinated salen-containing metal-organic framework (MOF) obtained through postsynthesis removal of Mn(III) ions from a metallosalen-containing MOF material has been used for selective separation of Th(IV) ion from Ln(III) ions in methanol solutions for the first time. This material exhibited an adsorption capacity of 46.345 mg of Th/g. The separation factors (β) of Th(IV)/La(III), Th(IV)/Eu(III), and Th(IV)/Lu(III) were 10.7, 16.4, and 10.3, respectively.

  14. Cetuximab and Radiation Therapy in Treating Patients With Stage III-IV Head and Neck Cancer

    Science.gov (United States)

    2017-11-15

    Stage III Squamous Cell Carcinoma of the Hypopharynx; Stage III Squamous Cell Carcinoma of the Larynx; Stage III Squamous Cell Carcinoma of the Oropharynx; Stage III Verrucous Carcinoma of the Larynx; Stage IV Squamous Cell Carcinoma of the Hypopharynx; Stage IVA Squamous Cell Carcinoma of the Larynx; Stage IVA Squamous Cell Carcinoma of the Oropharynx; Stage IVA Verrucous Carcinoma of the Larynx; Stage IVB Squamous Cell Carcinoma of the Larynx; Stage IVB Squamous Cell Carcinoma of the Oropharynx; Stage IVB Verrucous Carcinoma of the Larynx; Tongue Cancer

  15. Transferable tight-binding model for strained group IV and III-V materials and heterostructures

    Science.gov (United States)

    Tan, Yaohua; Povolotskyi, Michael; Kubis, Tillmann; Boykin, Timothy B.; Klimeck, Gerhard

    2016-07-01

    It is critical to capture the effect due to strain and material interface for device level transistor modeling. We introduce a transferable s p3d5s* tight-binding model with nearest-neighbor interactions for arbitrarily strained group IV and III-V materials. The tight-binding model is parametrized with respect to hybrid functional (HSE06) calculations for varieties of strained systems. The tight-binding calculations of ultrasmall superlattices formed by group IV and group III-V materials show good agreement with the corresponding HSE06 calculations. The application of the tight-binding model to superlattices demonstrates that the transferable tight-binding model with nearest-neighbor interactions can be obtained for group IV and III-V materials.

  16. Methylbutylmalonamide as an extractant for U(VI), Pu(IV), and Am(III)

    International Nuclear Information System (INIS)

    Nair, G.M.; Prabhu, D.R.; Mahajan, G.R.

    1994-01-01

    The unsymmetrical diamide methylbutylmalonamide has been synthesized and used in the extraction of U(VI), Pu(IV), and Am(III) in benzene medium. The distribution ratio for three cations was found to increase with increasing aqueous nitric acid concentration. U(VI) and Pu(IV) were found to be extracted as disolvates while Am(III) as a trisolvate. The thermodynamic parameters determined by the temperature variation method showed the extraction reactions to be mainly enthalphy-controlled. Am(III) was found to be back-extracted with dilute nitric acid, while Pu(IV) by dilute nitric acid - hydrofluoric acid mixture and U(VI) by dilute sodium carbonate solution. (author) 6 refs.; 3 figs.; 2 tabs

  17. Initial experience with locoregional radioimmunotherapy using {sup 131}I-labelled monoclonal antibodies against tenascin (BC-4) for treatment of glioma (WHO III and IV)

    Energy Technology Data Exchange (ETDEWEB)

    Poepperl, G.; Gildehaus, F.J.; Hahn, K.; Tatsch, K. [Klinik und Poliklinik fuer Nuklearmedizin, Klinikum Grosshadern, Muenchen (Germany); Goetz, C.; Reulen, H.J. [Klinik und Poliklinik fuer Neurochirurgie, Klinikum Grosshadern, Muenchen (Germany); Yousry, T.A. [Inst. fuer Neuroradiologie der LMU Muenchen, Klinikum Grosshadern, Muenchen (Germany)

    2002-06-01

    of activity within the resection cavity and low systemic toxicity. (orig.) [German] Ziel: Bei der Standardtherapie von Gliomen (Resektion, Radiatio, Chemotherapie) ist die Prognose sehr schlecht. Ein neuer Therapieansatz besteht in der additiven lokalen Radioimmuntherapie (RIT) mit {sup 131}I-markierten Tenascin-Antikoerpern (BC-4). Diese Studie berichtet ueber unsere initialen Erfahrungen hinsichtlich Nebenwirkungen, Biokinetik und klinischem Verlauf. Methoden: Zwoelf Patienten (4 Gliome WHO III, 8 Gliome WHO IV) erhielten nach Operation und perkutaner Radiatio 1-5 RIT-Zyklen im Abstand von 6 Wochen mit durchschnittlich 1100 MBq {sup 131}I-markierten Antikoerpern ueber ein Ommaya-Reservoir. Der Verlauf wurde durch FDG-PET- und MRT-Untersuchungen dokumentiert. Die Biokinetic wurde an Ganzkoerperaufnahmen, Blut- und Urinproben sowie Proben aus der Tumorhoehle nach RIT beurteilt. Ergebnisse: Unter RIT traten bei vier Patienten passagere Anfaelle, bei einem in Kombination mit transienter Sprachstoerung auf. Acht Patienten bildeten im Verlauf HAMAs (humane Antikoerper gegen Mausantigen) aus. Die biologische HWZ der Aktivitaet in der Turmorhoehle lag im Mittel bei 3,9 d (1,0-10,2 d) und blieb intraindividuell bei Folgetherapien konstant. Das Radioimmunkonjugat in der Tumorhoehle blieb mindestens 5 d stabil. Die mittlere Ueberlebenszeit liegt zurzeit bei 18,5 Monaten und ist damit deutlich hoeher als bei einer historischen Patientengruppe mit Standardtherapie (9,7 Monate; n=89). Fuenf Patienten zeigen bisher keinen Hinweis auf ein Rezidiv. Bei drei Patienten mit einem Tumorrest nach Operation zeigte sich unter RIT in einem Fall partielle Remission, ein stabiler und ein progredienter Krankheitsverlauf. Vier Patienten ohne Tumorrest zu Therapiebeginn entwickelten unter Therapie ein Rezidiv. Schlussfolgerungen: Erste Erfahrungen mit der lokalen RIT zeigen, dass diese komplikationsarme Therapieform additiv zur Standardtherapie ein Erfolg versprechender Ansatz bei malignem

  18. Amine and Titanium (IV Chloride, Boron (III Chloride or Zirconium (IV Chloride-Promoted Baylis-Hillman Reactions

    Directory of Open Access Journals (Sweden)

    Shi-Cong Cui

    2001-10-01

    Full Text Available The Baylis-Hillman reactions of various aryl aldehydes with methyl vinyl ketone at temperatures below -20oC using Lewis acids such as titanium (IV chloride, boron (III chloride or zirconium (IV chloride in the presence of a catalytic amount of selected amines used as a Lewis bases afford the chlorinated compounds 1 as the major product in very high yields. Acrylonitrile can also undergo the same reaction to give the corresponding chlorinated product in moderate yield. A plausible reaction mechanism is proposed. However, if the reaction was carried out at room temperature (ca. 20oC, then the Z-configuration of the elimination product 3, derived from 1, was formed as the major product.

  19. Kinetic Study on the Sorption of Te (IV), Ce (III) and Eu (III) on some Inorganic Ion Exchangers

    International Nuclear Information System (INIS)

    El-Sweify, F.H.; Shehata, M.K.K.; El-Shazly, E.A.A.

    2008-01-01

    The sorption behaviour of Te (IV), Ce (III) and Eu (III) on zirconium phosphate (Zr P) and ceric tungstate under various conditions was studied. Some factors affecting the sorption kinetics of the aforementioned metal ions on both ion exchangers were investigated. These factors were: hydrogen ion concentration in the absence of complexing agents, contact time, particle size of the two mentioned ion exchangers, metal in concentration and temperature. Radioactive isotopes were used for tracing the corresponding elements. Some physical parameters related to the sorption process were calculated from the obtained data

  20. The Uptake of Eu(III) and Th(IV) by Calcite under Hyperalkaline Conditions

    Energy Technology Data Exchange (ETDEWEB)

    Tits, J.; Wieland, E.; Bradbury, M.H.; Eckert, P.; Schaible, A

    2002-10-01

    Calcite is an important component of Valanginian marl, a potential host rock for a low and intermediate level radioactive waste (L/ILW) repository in Switzerland. This mineral also forms an important component of the disturbed zone around a repository, as it remains largely unaffected by the hyperalkaline waters migrating out of the cementitious repository . The sorption behaviour of Eu(III) and Th(IV) on Merck calcite in an artificial cement pore water (ACW) at pH 13.3 has been studied in batch-type sorption experiments. In addition, the effect of {alpha}-isosaccharinic acid (ISA) and gluconic acid (GLU) on the sorption of these two cations has been investigated. In the absence of ISA and GLU, a strong interaction of Eu(III) and Th(IV) with Merck calcite was observed. Eu(III) and Th(IV) sorption kinetics were fast and the isotherms indicated a linear adsorption behaviour over the experimentally accessible concentration range. In the case of Eu(III), a decrease of the R{sub d} value with increasing solid to liquid (S:L) ratio was observed indicating that, along with adsorption, other processes might influence the immobilisation of this cation by Merck calcite under ACW conditions. In the case of Th(IV), however, changes in the S:L ratio had no effect on the sorption behaviour . High ISA and GLU concentrations in solution significantly affected the sorption of both Eu(III) and Th(IV): R{sub d} values for Eu(III) decreased significantly at ISA concentrations higher than 10{sup -5} M and at GLU concentrations higher than 10{sup -7} M. The sorption of Th(IV) was reduced at ISA concentrations above 2.10{sup -5} M and at GLU concentrations above 10{sup -6} M. The effects of ISA and GLU on the immobilisation of Eu(III) and Th(IV) were interpreted in terms of complex formation in solution. In the case of Eu(III) the metal ligand complexes were found to have a 1 : 1 stoichiometry. Complexation constants derived for the aqueous Eu(III)-ISA. and Eu(III)GLU complexes were

  1. The Uptake of Eu(III) and Th(IV) by Calcite under Hyperalkaline Conditions

    International Nuclear Information System (INIS)

    Tits, J.; Wieland, E.; Bradbury, M.H.; Eckert, P.; Schaible, A.

    2002-10-01

    Calcite is an important component of Valanginian marl, a potential host rock for a low and intermediate level radioactive waste (L/ILW) repository in Switzerland. This mineral also forms an important component of the disturbed zone around a repository, as it remains largely unaffected by the hyperalkaline waters migrating out of the cementitious repository . The sorption behaviour of Eu(III) and Th(IV) on Merck calcite in an artificial cement pore water (ACW) at pH 13.3 has been studied in batch-type sorption experiments. In addition, the effect of α-isosaccharinic acid (ISA) and gluconic acid (GLU) on the sorption of these two cations has been investigated. In the absence of ISA and GLU, a strong interaction of Eu(III) and Th(IV) with Merck calcite was observed. Eu(III) and Th(IV) sorption kinetics were fast and the isotherms indicated a linear adsorption behaviour over the experimentally accessible concentration range. In the case of Eu(III), a decrease of the R d value with increasing solid to liquid (S:L) ratio was observed indicating that, along with adsorption, other processes might influence the immobilisation of this cation by Merck calcite under ACW conditions. In the case of Th(IV), however, changes in the S:L ratio had no effect on the sorption behaviour . High ISA and GLU concentrations in solution significantly affected the sorption of both Eu(III) and Th(IV): R d values for Eu(III) decreased significantly at ISA concentrations higher than 10 -5 M and at GLU concentrations higher than 10 -7 M. The sorption of Th(IV) was reduced at ISA concentrations above 2.10 -5 M and at GLU concentrations above 10 -6 M. The effects of ISA and GLU on the immobilisation of Eu(III) and Th(IV) were interpreted in terms of complex formation in solution. In the case of Eu(III) the metal ligand complexes were found to have a 1 : 1 stoichiometry. Complexation constants derived for the aqueous Eu(III)-ISA. and Eu(III)GLU complexes were determined to be logβ 0 EulSA = -31.1

  2. Phase II study of ipilimumab in adolescents with unresectable stage III or IV malignant melanoma

    DEFF Research Database (Denmark)

    Geoerger, Birgit; Bergeron, Christophe; Gore, Lia

    2017-01-01

    BACKGROUND: Ipilimumab is approved for the treatment of advanced melanoma in adults; however, little information on the efficacy and safety of ipilimumab in younger patients is available. METHODS: Patients aged 12 to <18 years with previously treated or untreated, unresectable stage III or IV mal...

  3. Interaction of complexes I, III, and IV within the bovine respirasome by single particle cryoelectron tomography

    NARCIS (Netherlands)

    Dudkina, Natalya V.; Kudryashev, Mikhail; Stahlberg, Henning; Boekema, Egbert J.

    2011-01-01

    The respirasome is a multisubunit supercomplex of the respiratory chain in mitochondria. Here we report the 3D reconstruction of the bovine heart respirasome, composed of dimeric complex III and single copies of complex I and IV, at about 2.2-nm resolution, determined by cryoelectron tomography and

  4. Non-LTE equivalent widths for Si II, III and IV

    International Nuclear Information System (INIS)

    Becker, S.R.; Butler, K.

    1990-01-01

    Equivalent widths for a set of Si II, III and IV lines reliable for the determination of temperatures in the B star parameter range are given. They are calculated on a fine grid of LTE line blanketed model atmospheres and lie in the wavelength region from 4070 A to 5070 A

  5. Cost analysis of surgically treated pressure sores stage III and IV.

    NARCIS (Netherlands)

    Filius, A.; Damen, T.H.; Schuijer-Maaskant, K.P.; Polinder, S.; Hovius, S.E.R.; Walbeehm, E.T.

    2013-01-01

    Health-care costs associated with pressure sores are significant and their financial burden is likely to increase even further. The aim of this study was to analyse the direct medical costs of hospital care for surgical treatment of pressure sores stage III and IV. We performed a retrospective chart

  6. Determination of the solubility of Np(IV), Pu(III) - (VI),Am(III) - (VI), and Te(IV), (V) hydroxo compounds in 0.5 - 14 M NaOH solutions

    Energy Technology Data Exchange (ETDEWEB)

    Delegard, C.H.

    1996-09-24

    The solubilities of Am(III), Np(IV), Pu(IV), Tc(IV), Np(V), Pu(V), Am(V), and Tc(V) hydroxo compounds were studied in 0.5 to 14 M NaOH solutions at 25{+-}2 {degrees}C. The effects of fluoride, phosphate, carbonate, oxalate, and some other organic complexing agents on the solubilities of Np(IV), Pu(IV), and TC(IV) hydroxides were investigated at 1.0 and 4.0 M NAOH. Some predictions were made on the dissolved (I.V) and (V) species present in alkali solutions.

  7. Single-layer group IV-V and group V-IV-III-VI semiconductors: Structural stability, electronic structures, optical properties, and photocatalysis

    Science.gov (United States)

    Lin, Jia-He; Zhang, Hong; Cheng, Xin-Lu; Miyamoto, Yoshiyuki

    2017-07-01

    Recently, single-layer group III monochalcogenides have attracted both theoretical and experimental interest at their potential applications in photonic devices, electronic devices, and solar energy conversion. Excited by this, we theoretically design two kinds of highly stable single-layer group IV-V (IV =Si ,Ge , and Sn; V =N and P) and group V-IV-III-VI (IV =Si ,Ge , and Sn; V =N and P; III =Al ,Ga , and In; VI =O and S) compounds with the same structures with single-layer group III monochalcogenides via first-principles simulations. By using accurate hybrid functional and quasiparticle methods, we show the single-layer group IV-V and group V-IV-III-VI are indirect bandgap semiconductors with their bandgaps and band edge positions conforming to the criteria of photocatalysts for water splitting. By applying a biaxial strain on single-layer group IV-V, single-layer group IV nitrides show a potential on mechanical sensors due to their bandgaps showing an almost linear response for strain. Furthermore, our calculations show that both single-layer group IV-V and group V-IV-III-VI have absorption from the visible light region to far-ultraviolet region, especially for single-layer SiN-AlO and SnN-InO, which have strong absorption in the visible light region, resulting in excellent potential for solar energy conversion and visible light photocatalytic water splitting. Our research provides valuable insight for finding more potential functional two-dimensional semiconductors applied in optoelectronics, solar energy conversion, and photocatalytic water splitting.

  8. 11-year field study of Pu migration from Pu III, IV, and VI sources

    International Nuclear Information System (INIS)

    Kaplan, D.I.; Serkiz, S.M.; Demirkanli, D.I.; Gumapas, L.; Fjeld, R.A.; Molz, F.J.; Powell, B.A.

    2005-01-01

    Full text of publication follows: Understanding the processes controlling Pu mobility in the subsurface environment is important for estimating the amount of Pu waste that can be safely disposed in vadose zone burial sites. To study long-term Pu mobility, four 52-L lysimeters filled with sediment collected from the Savannah River Site near Aiken South Carolina were amended with well characterized solid Pu sources (Pu III Cl 3 , Pu IV (NO 3 ) 4 , Pu IV (C 2 O 4 ) 2 , and Pu VI O 2 (NO 3 ) 2 ) and left exposed to natural precipitation for 2 to 11 years. Pu oxidation state distribution in the Pu(III) and Pu(IV) lysimeters sediments (a red clayey sediment, pH = 6.3) were similar, consisting of 0% Pu(III), >92% Pu(IV), 1% Pu(V), 1% Pu(VI), and the remainder was a Pu polymer. These three lysimeters also had near identical sediment Pu concentration profiles, where >95% of the Pu remained within 1.25 cm of the source after 11 years; moving at an overall rate of 0.9 cm yr -1 . As expected, Pu moved more rapidly through the Pu(VI) lysimeter, at an overall rate of 12.5 cm yr -1 . Solute transport modeling of the sediment Pu concentration profile data in the Pu(VI) lysimeter indicated that some transformation of Pu into a much less mobile form, presumably Pu(IV), had occurred during the course of the two year study. This modeling also supported previous laboratory measurements showing that Pu(V) or Pu(VI) reduction was five orders of magnitude faster than corresponding Pu(III) or Pu(IV) oxidation. The slow oxidation rate (1 x 10-8 hr -1 ; t 1/2 = 8,000 yr) was not discernable from the Pu(VI) lysimeter data that reflected only two years of transport but was readily discernable from the Pu(III) and Pu(IV) lysimeter data that reflected 11 yr of transport. (authors)

  9. Palliative Care in Improving Quality of Life and Symptoms in Patients With Stage III-IV Pancreatic or Ovarian Cancer

    Science.gov (United States)

    2014-12-18

    Recurrent Ovarian Epithelial Cancer; Recurrent Ovarian Germ Cell Tumor; Recurrent Pancreatic Cancer; Stage III Pancreatic Cancer; Stage IIIA Ovarian Epithelial Cancer; Stage IIIA Ovarian Germ Cell Tumor; Stage IIIB Ovarian Epithelial Cancer; Stage IIIB Ovarian Germ Cell Tumor; Stage IIIC Ovarian Epithelial Cancer; Stage IIIC Ovarian Germ Cell Tumor; Stage IV Ovarian Epithelial Cancer; Stage IV Ovarian Germ Cell Tumor; Stage IV Pancreatic Cancer

  10. Preoperative chemoradiotherapy using superselective intraarterial infusion via superficial temporal artery for stage III, IV oral cancer

    Energy Technology Data Exchange (ETDEWEB)

    Tohnai, Iwai; Shigetomi, Toshio [Nagoya Univ. (Japan). Graduate School of Medicine; Hayashi, Yasushi [Nagoya Second Red Cross Hospital (Japan)] (and others)

    2002-03-01

    Thirty-eight patients with stage III, IV oral cancer were treated by preoperative chemoradiotherapy using superselective intraarterial infusion via the superficial temporal artery. Radiotherapy (total dose: 40 Gy) and chemotherapy using CBDCA (total dose: 460 mg/m{sup 2}) were performed daily, followed by surgery. Catheter-insertion of 34 patients was done successfully. Four catheter insertions were not done successfully because of the anomaly of the artery such as common trunk of the lingual artery and the facial artery. The clinical effects were CR in 9 patients (26.5%) and PR in 25 (73.5%), and histopathological effects after surgery were grade III, IV in 10 (29.4%), grade IIb in 23 (67.6%), and grade IIa in 2 (5.8%). The 5-year cumulative survival rate was 67.8%. This superselective intra arterial infusion method could be the technique of choice for the treatment of oral cancer. (author)

  11. A proteomics panel for predicting optimal primary cytoreduction in stage III/IV ovarian cancer

    DEFF Research Database (Denmark)

    Risum, Signe; Høgdall, Estrid; Engelholm, Svend A

    2009-01-01

    for CA-125. In addition, serum was analyzed for 7 biomarkers using surface-enhanced laser desorption/ionization time-of-flight mass spectrometry. These biomarkers were combined into a single-valued ovarian-cancer-risk index (OvaRI). CA-125 and OvaRI were evaluated as predictors of cytoreduction in 75......The objective of this prospective study was to evaluate CA-125 and a 7-marker panel as predictors of incomplete primary cytoreduction in patients with stage III/IV ovarian cancer (OC). From September 2004 to January 2008, serum from 201 patients referred to surgery for a pelvic tumor was analyzed...... stage III/IV patients using receiver operating characteristic curves. Complete primary cytoreduction (no macroscopic residual disease) was achieved in 31% (23/75) of the patients. The area under the receiver operating characteristic curve was 0.66 for CA-125 and 0.75 for OvaRI. The sensitivity...

  12. A novel technique for the treatment of stages III to IV hemorrhoids

    Science.gov (United States)

    Lin, Guoqiang; Ge, Qiongxiang; He, Xiaokang; Qi, Haixin; Xu, Li

    2017-01-01

    Abstract To compare the efficacy of homemade anal cushion suspension clamp combined with harmonic scalpel (ACS) and Milligan–Morgan hemorrhoidectomy combined with electric knife (MMH) in the treatment of stages III to IV hemorrhoids. We conducted a retrospective study of 99 patients with stages III to IV hemorrhoids hospitalized from January to December in 2013. Among them, 51 patients were treated with ACS, while 48 patients received MMH. Data from clinical recording and follow-up included operative time, intraoperative blood loss, hospitalization information, postoperative pain, and postoperative complications. Operative time, intraoperative blood loss and hospitalization time in ACS group were significantly less than those in MMH group (P hemorrhoids. PMID:28658138

  13. HYPERGLYCEMIA IN GRADE III AND GRADE IV MALNUTRITION WITH DEHYDRATING GASTROENTERITIS

    Directory of Open Access Journals (Sweden)

    Mallesh

    2015-07-01

    Full Text Available OBJECTIVE OF THE STUDY: To study the incidence of hyperglycemia in grade III AND IV malnutrition with no signs and some signs of dehydration. SETTING: Tertiary care center located in north Karnataka. DESIGN: Prospective observational study involving 21 children. METHODS: All the children with grade III and grade IV malnutrition presenting with diarrhea of less than 14 days duration, having no signs to some signs of dehydration. RESULTS: Hyperglycemia was observed in three of 21 children hypoglycemia was observed in six children. CONCLUSION: Although hypoglycemia is common finding in moderate and severely malnourished children with dehydrating gastroenteritis, hyperglycemia should also be suspected and treated. Long term follow up of these children is needed involving larger number of people in multicenter studies.

  14. Preoperative chemoradiotherapy using superselective intraarterial infusion via superficial temporal artery for stage III, IV oral cancer

    International Nuclear Information System (INIS)

    Tohnai, Iwai; Shigetomi, Toshio

    2002-01-01

    Thirty-eight patients with stage III, IV oral cancer were treated by preoperative chemoradiotherapy using superselective intraarterial infusion via the superficial temporal artery. Radiotherapy (total dose: 40 Gy) and chemotherapy using CBDCA (total dose: 460 mg/m 2 ) were performed daily, followed by surgery. Catheter-insertion of 34 patients was done successfully. Four catheter insertions were not done successfully because of the anomaly of the artery such as common trunk of the lingual artery and the facial artery. The clinical effects were CR in 9 patients (26.5%) and PR in 25 (73.5%), and histopathological effects after surgery were grade III, IV in 10 (29.4%), grade IIb in 23 (67.6%), and grade IIa in 2 (5.8%). The 5-year cumulative survival rate was 67.8%. This superselective intra arterial infusion method could be the technique of choice for the treatment of oral cancer. (author)

  15. Ventas jurisdiccionales abulenses en tiempos de Felipe III y Felipe IV

    Directory of Open Access Journals (Sweden)

    Francisco Javier LORENZO PINAR

    2009-12-01

    Full Text Available RESUMEN: Este trabajo tiene por objeto dar a conocer las enajenaciones jurisdiccionales, —excluidas las ventas de oficios— llevadas a cabo por Felipe III y Felipe IV en la provincia de Ávila. Analiza las motivaciones de las ventas de lugares, el origen social de los compradores y las dificultades halladas por la Monarquía a la hora de llevar a cabo este proceso.ABSTRACT: This work tries to approach us to the territorial sales in Ávila —situated in the center of Spain— in the reigns of Philip III and Philip IV. It analyses the motivations, the social origin of the buyers and the difficulties found by the Monarchy when it wanted to manage this process.

  16. Cost analysis of surgically treated pressure sores stage III and IV.

    Science.gov (United States)

    Filius, A; Damen, T H C; Schuijer-Maaskant, K P; Polinder, S; Hovius, S E R; Walbeehm, E T

    2013-11-01

    Health-care costs associated with pressure sores are significant and their financial burden is likely to increase even further. The aim of this study was to analyse the direct medical costs of hospital care for surgical treatment of pressure sores stage III and IV. We performed a retrospective chart study of patients who were surgically treated for stage III and IV pressure sores between 2007 and 2010. Volumes of health-care use were obtained for all patients and direct medical costs were subsequently calculated. In addition, we evaluated the effect of location and number of pressure sores on total costs. A total of 52 cases were identified. Average direct medical costs in hospital were €20,957 for the surgical treatment of pressure sores stage III or IV; average direct medical costs for patients with one pressure sore on an extremity (group 1, n = 5) were €30,286, €10,113 for patients with one pressure sore on the trunk (group 2, n = 32) and €40,882 for patients with multiple pressure sores (group 3, n = 15). The additional costs for patients in group 1 and group 3 compared to group 2 were primarily due to longer hospitalisation. The average direct medical costs for surgical treatment of pressure sores stage III and IV were high. Large differences in costs were related to the location and number of pressure sores. Insight into the distribution of these costs allows identification of high-risk patients and enables the development of specific cost-reducing measures. Copyright © 2013 British Association of Plastic, Reconstructive and Aesthetic Surgeons. Published by Elsevier Ltd. All rights reserved.

  17. Grade III or Grade IV Hypertensive Retinopathy with Severely Elevated Blood Pressure

    Directory of Open Access Journals (Sweden)

    Amanda D Henderson

    2012-12-01

    Full Text Available Introduction: Hypertensive retinopathy describes a spectrum of retinal changes in patients with elevated blood pressure (BP. It is unknown why some patients are more likely to develop acute ocular end-organ damage than others with similar BP. We examined risk factors for grade III/IV hypertensive retinopathy among patients with hypertensive urgency in the emergency department (ED and compared healthcare utilization and mortality between patients with and without grade III/IV hypertensive retinopathy.Methods: A preplanned subanalysis of patients who presented to a university hospital ED with diastolic BP > 120 mmHg and who enrolled in the Fundus Photography versus Ophthalmoscopy Trial Outcomes in the ED study was performed. Bilateral nonmydriatic ocular fundus photographs, vital signs, and demographics were obtained at presentation. Past medical history, laboratory values, healthcare utilization, and mortality were ascertained from medical record review at least 8 months after initial ED visit.Results: Twenty-one patients with diastolic BP > 120 mmHg, 7 of whom (33% had grade III/IV hypertensive retinopathy, were included. Patients with retinopathy were significantly younger than those without (median 33 vs 50 years, P = 0.02. Mean arterial pressure (165 vs 163 mmHg was essentially equal in the 2 groups. Patients with retinopathy had substantially increased but nonsignificant rates of ED revisit (57% vs 29%, P = 0.35 and hospital admission after ED discharge (43% vs 14%, P = 0.28. One of the patients with retinopathy died, but none without.Conclusion: Younger patients may be at higher risk for grade III/IV hypertensive retinopathy among patients with hypertensive urgency. Chronic compensatory mechanisms may have not yet developed in these younger patients. Alternatively, older patients with retinopathy may be underrepresented secondary to increased mortality among these patients at a younger age (survivorship bias. Further research is needed to

  18. Determination of disulfide bridges of two spider toxins: hainantoxin-III and hainantoxin-IV

    Directory of Open Access Journals (Sweden)

    W Wang

    2009-01-01

    Full Text Available Peptide toxins are usually highly bridged proteins with multipairs of intrachain disulfide bonds. Analysis of disulfide connectivity is an important facet of protein structure determination. In this paper, we successfully assigned the disulfide linkage of two novel peptide toxins, called HNTX-III and HNTX-IV, isolated from the venom of Ornithoctonus hainana spider. Both peptides are useful inhibitors of TTX-sensitive voltage-gated sodium channels and are composed of six cysteine residues that form three disulfide bonds, respectively. Firstly, the peptides were partially reduced by tris(2-carboxyethyl-phosphine (TCEP in 0.1 M citrate buffer containing 6 M guanidine-HCl at 40° C for ten minutes. Subsequently, the partially reduced intermediates containing free thiols were separated by reversed-phase high-performance liquid chromatography (RP-HPLC and alkylated by rapid carboxamidomethylation. Then, the disulfide bonds of the intermediates were analyzed by Edman degradation. By using the strategy above, disulfide linkages of HNTX-III and HNTX-IV were determined as I-IV, II-V and III-VI pattern. In addition, this study also showed that this method may have a great potential for determining the disulfide bonds of spider peptide toxins.

  19. Transferable tight binding model for strained group IV and III-V heterostructures

    Science.gov (United States)

    Tan, Yaohua; Povolotskyi, Micheal; Kubis, Tillmann; Boykin, Timothy; Klimeck, Gerhard

    Modern semiconductor devices have reached critical device dimensions in the range of several nanometers. For reliable prediction of device performance, it is critical to have a numerical efficient model that are transferable to material interfaces. In this work, we present an empirical tight binding (ETB) model with transferable parameters for strained IV and III-V group semiconductors. The ETB model is numerically highly efficient as it make use of an orthogonal sp3d5s* basis set with nearest neighbor inter-atomic interactions. The ETB parameters are generated from HSE06 hybrid functional calculations. Band structures of strained group IV and III-V materials by ETB model are in good agreement with corresponding HSE06 calculations. Furthermore, the ETB model is applied to strained superlattices which consist of group IV and III-V elements. The ETB model turns out to be transferable to nano-scale hetero-structure. The ETB band structures agree with the corresponding HSE06 results in the whole Brillouin zone. The ETB band gaps of superlattices with common cations or common anions have discrepancies within 0.05eV.

  20. The dependence of C IV broad absorption line properties on accompanying Si IV and Al III absorption: relating quasar-wind ionization levels, kinematics, and column densities

    Energy Technology Data Exchange (ETDEWEB)

    Filiz Ak, N.; Brandt, W. N.; Schneider, D. P.; Trump, J. R. [Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States); Hall, P. B. [Department of Physics and Astronomy, York University, 4700 Keele Street, Toronto, Ontario M3J 1P3 (Canada); Anderson, S. F. [Astronomy Department, University of Washington, Seattle, WA 98195 (United States); Hamann, F. [Department of Astronomy, University of Florida, Gainesville, FL 32611-2055 (United States); Myers, Adam D. [Department of Physics and Astronomy, University of Wyoming, Laramie, WY 82071 (United States); Pâris, I. [Departamento de Astronomía, Universidad de Chile, Casilla 36-D, Santiago (Chile); Petitjean, P. [Institut d' Astrophysique de Paris, Universite Paris 6, F-75014 Paris (France); Ross, Nicholas P. [Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720 (United States); Shen, Yue [Carnegie Observatories, 813 Santa Barbara Street, Pasadena, CA 91101 (United States); York, Don, E-mail: nfilizak@astro.psu.edu [Department of Astronomy and Astrophysics, The University of Chicago, Chicago, IL 60637 (United States)

    2014-08-20

    We consider how the profile and multi-year variability properties of a large sample of C IV Broad Absorption Line (BAL) troughs change when BALs from Si IV and/or Al III are present at corresponding velocities, indicating that the line of sight intercepts at least some lower ionization gas. We derive a number of observational results for C IV BALs separated according to the presence or absence of accompanying lower ionization transitions, including measurements of composite profile shapes, equivalent width (EW), characteristic velocities, composite variation profiles, and EW variability. We also measure the correlations between EW and fractional-EW variability for C IV, Si IV, and Al III. Our measurements reveal the basic correlated changes between ionization level, kinematics, and column density expected in accretion-disk wind models; e.g., lines of sight including lower ionization material generally show deeper and broader C IV troughs that have smaller minimum velocities and that are less variable. Many C IV BALs with no accompanying Si IV or Al III BALs may have only mild or no saturation.

  1. Separation of uranium(V I) from binary solution mixtures with thorium(IV), zirconium(IV) and cerium(III) by foaming

    International Nuclear Information System (INIS)

    Shakir, K.; Aziz, M.; Benyamin, K.

    1992-01-01

    Foam separation has been investigated for the removal of uranium(V I), thorium(IV), zirconium(IV) and cerium(III) from dilute aqueous solutions at pH values ranging from about I to about II. Sodium laurel sulphate (Na L S) and acetyl trimethyl ammonium bromide (CTAB), being a strong anionic and a strong cationic surfactants, were used as collectors. The results indicate that Na L S can efficiently remove thorium(IV), zirconium(IV) and cerium(III) but not uranium(V I). CTAB, on the other hand, can successfully float only uranium(V I) and zirconium(IV). These differences in flotation properties of the different cations could be used to establish methods for the separation of uranium(V I) from binary mixtures with thorium(IV), zirconium(IV) or cerium(III). The results are discussed in terms of the hydrolytic behaviour of the tested cations and properties of used collectors.2 fig., 1 tab

  2. A cerium(IV)-carbon multiple bond

    Energy Technology Data Exchange (ETDEWEB)

    Gregson, Matthew; Lu, Erli; McMaster, Jonathan; Lewis, William; Blake, Alexander J.; Liddle, Stephen T. [Nottingham Univ. (United Kingdom). School of Chemistry

    2013-12-02

    Straightforward access to a cerium(IV)-carbene complex was provided by one-electron oxidation of an anionic ''ate'' cerium(III)-carbene precursor, thereby avoiding decomposition reactions that plague oxidations of neutral cerium(III) compounds. The cerium(IV)-carbene complex is the first lanthanide(IV)-element multiple bond and involves a twofold bonding interaction of two electron pairs between cerium and carbon. [German] Auf direktem Wege zu einem Cer(IV)-Carbenkomplex gelangt man durch die Einelektronenoxidation einer anionischen Carben-Cerat(III)-Vorstufe. So werden Zersetzungsprozesse vermieden, die die Oxidation neutraler Cer(III)-Verbindungen erschweren. Der Cer(IV)-Carbenkomplex enthaelt die erste Lanthanoid(IV)-Element-Mehrfachbindung; dabei binden Cer und Kohlenstoff ueber zwei Elektronenpaare.

  3. The cost of unresectable stage III or stage IV melanoma in Italy

    Directory of Open Access Journals (Sweden)

    Maio Michele

    2012-11-01

    Full Text Available Abstract Background In recent decades, melanoma incidence has been increasing in European countries; in 2006, there were approximately 60,000 cases leading to 13,000 deaths. Within Europe there is some geographical variation in the incidence of melanoma, with the highest rates reported in Scandinavia (15 cases per 100,000 inhabitants per year and the lowest in the Mediterranean countries (5 to 7 cases per 100,000 inhabitants per year. Methods The present article is based on the information collected in the MELODY study (MELanoma treatment patterns and Outcomes among patients with unresectable stage III or stage IV Disease: a retrospective longitudinal survey. In that study, the medical charts of patients were reviewed to document current treatment patterns and to analyse information on patients, disease characteristics and healthcare resource utilization related to the treatment of advanced melanoma regarding patients who presented with a diagnosis of malignant melanoma (stage I to IV at participating sites between 01 July, 2005 and 30 June, 2006. Results Summarizing, though the length of the follow-up period varies among sample patients, an amount of the yearly cost per patient can be estimated, dividing the average per patient total cost (€ 5.040 by the average follow-up duration (17.5 months and reporting to one year; on these grounds, unresectable stage III or stage IV melanoma in Italy would cost € 3,456 per patient per year.

  4. Complexation of the actinides (III, IV and V) with organic acids

    International Nuclear Information System (INIS)

    Leguay, S.

    2012-01-01

    A thorough knowledge of the chemical properties of actinides is now required in a wide variety of fields: extraction processes involved in spent fuel reprocessing, groundwater in the vicinity of radioactive waste packages, environmental and biological media in the case of accidental release of radionuclides. In this context, the present work has been focused on the complexation of Am(III), Cm(III), Cf(III), Pu(IV) and Pa(V) with organic ligands: DTPA, NTA and citric acid. The complexation of pentavalent protactinium with citric and nitrilotriacetic acids was studied using liquid-liquid extraction with the element at tracer scale (C Pa ≤ 10 -10 M). The order and the mean charge of each complex were determined from the analysis of the systematic variations of the distribution coefficient of Pa(V) as function of ligand and proton concentration. Then, the apparent formation constants related of the so-identified complexes were calculated. The complexation of trivalent actinides with DTPA was studied by fluorescence spectroscopy (TRLFS) and capillary electrophoresis (CE-ICP-MS). The coexistence of the mono-protonated and non-protonated complexes (AnHDTPA - and AnDTPA 2- ) in acidic media (1.5 ≤ pH ≤ 3.5) was shown unambiguously. Literature data have been reinterpreted by taking into account both complexes and a consistent set of formation constants of An(III)-DTPA has been obtained. The experimental study was completed by theoretical calculations (DFT) on Cm-DTPA system. The coordination geometry of Cm in CmDTPA 2- and CmHDTPA - including water molecules in the first coordination sphere has been determined as well as interatomic distances. Finally, a study on the complexation of Pu(IV) with DTPA was initiated in order to more closely mimic physiological conditions. A three-step approach was proposed to avoid plutonium hydrolysis: i/ complexation of Pu(IV) with (NTA) in order to protect Pu(IV) from hydrolysis (at low pH) ii/ increase of pH toward neutral conditions

  5. On the line intensity ratios of prominent Si II, Si III, and Si IV multiplets

    International Nuclear Information System (INIS)

    Djenize, S.; Sreckovic, A.; Bukvic, S.

    2010-01-01

    Line intensities of singly, doubly and triply ionized silicon (Si II, Si III, and Si IV, respectively) belonging to the prominent higher multiplets, are of interest in laboratory and astrophysical plasma diagnostics. We measured these line intensities in the emission spectra of pulsed helium discharge. The Si II line intensity ratios in the 3s3p 22 D-3s 2 4p 2 P o , 3s 2 3d 2 D-3s 2 4f 2 F o , and 3s 2 4p 2 P o -3s 2 4d 2 D transitions, the Si III line intensity ratios in the 3s3d 3 D-3s4p 3 P o , 3s4p 3 P o -3s4d 3 D, 3s4p 3 P o -3s5s 3 S, 3s4s 3 S-3s4p 3 P o , and 3s4f 3 F o -3s5g 3 G transitions, and the Si IV line intensity ratios in the 4p 2 P o -4d 2 D and 4p 2 P o -5s 2 S transitions were obtained in a helium plasma at an electron temperature of about 17,000 ± 2000 K. Line shapes were recorded using a spectrograph and an ICCD camera as a highly-sensitive detection system. The silicon atoms were evaporated from a Pyrex discharge tube designed for the purpose. They represent impurities in the optically thin helium plasma at the silicon ionic wavelengths investigated. The line intensity ratios obtained were compared with those available in the literature, and with values calculated on the basis of available transition probabilities. The experimental data corresponded well with line intensity ratios calculated using the transition probabilities obtained from a Multi Configuration Hartree-Fock approximation for Si III and Si IV spectra. We recommend corrections of some Si II transition probabilities.

  6. Pyrazolates advance cerium chemistry: a CeIII/CeIV redox equilibrium with benzoquinone.

    Science.gov (United States)

    Werner, Daniel; Deacon, Glen B; Junk, Peter C; Anwander, Reiner

    2017-05-16

    Two stable cerium(iv) 3,5-dialkylpyrazolate complexes are presented, namely dimeric [Ce(Me 2 pz) 4 ] 2 (Me 2 pz = 3,5-dimethylpyrazolate) and monomeric Ce(tBu 2 pz) 4 (tBu 2 pz = 3,5-di-tert-butylpyrazolate) along with their trivalent counterparts [Ce(Me 2 pz) 3 ] and [Ce(tBu 2 pz) 3 ] 2 . All complexes were obtained from protonolysis reactions employing the silylamide precursors Ce[N(SiHMe 2 ) 2 ] 4 and Ce[N(SiMe 3 ) 2 ] 3 . Treatment of homoleptic Ce IV and Ce III Me 2 pz complexes with 1,4-hydroquinone (H 2 hq) or 1,4-benzoquinone (bq), respectively, ultimately gave the same trimetallic Ce III species via a cerium redox equilibrium. The Ce III complex Ce 3 (Me 2 pz) 5 (pchd) 2 (L) (pchd = 1,4-bis(3,5-dimethylpyrazol-1-yl)cyclohex-2,5-diene-1,4-diolato; L = Me 2 pzH or (thf) 2 ) results from a di-1,4-pyrazolyl attack on pre-coordinated bq. The reduction of bq by [Ce(Me 2 pz) 3 (thf)] 2 , and re-oxidation by the resulting Ce IV species was supported by UV-vis spectroscopic investigations. Comparisons with the redox-innocent complexes [Ln(Me 2 pz) 3 (thf)] 2 (Ln = La and Pr) revealed far less selective reactions with bq, giving hexametallic and octametallic rare-earth metal side products containing 2-Me 2 pz substituted hq ligands.

  7. Percutaneous intraductal radiofrequency ablation in the management of unresectable Bismuth types III and IV hilar cholangiocarcinoma.

    Science.gov (United States)

    Wang, Yu; Cui, Wei; Fan, Wenzhe; Zhang, Yingqiang; Yao, Wang; Huang, Kunbo; Li, Jiaping

    2016-08-16

    To assess the feasibility and safety of percutaneous intraductal radiofrequency ablation (RFA) for unresectable Bismuth types III and IV hilar cholangiocarcinoma. Percutaneous intraductal RFA combined with metal stent placement was successful in all patients without any technical problems; the technical success rate was 100%. Chemotherapy was administered to two patients. After treatment, serum direct bilirubin levels were notably decreased. Six patients died during the follow-up period. Median stent patency from the time of the first RFA and survival from the time of diagnosis were 100 days (95% confidence interval (CI), 85-115 days) and 5.3 months (95% CI, 2.5-8.1 months), respectively. No acute pancreatitis, bile duct bleeding and perforation, bile leakage, or other severe complications occurred. Four cases of procedure-related cholangitis, three cases of postoperative abdominal pain, and five cases of asymptomatic transient increase in serum amylase were observed. One patient who presented with stent blockage 252 days' post-procedure underwent repeat ablation. Between September 2013 and May 2015, nine patients with unresectable Bismuth types III and IV hilar cholangiocarcinoma who were treated with percutaneous intraductal RFA combined with metal stent placement after the percutaneous transhepatic cholangial drainage were included in the retrospective analysis. Procedure-related complications, stent patency, and survival after treatment were investigated. Percutaneous intraductal RFA combined with metal stent placement is a technically safe and feasible therapeutic option for the palliative treatment of unresectable Bismuth types III and IV hilar cholangiocarcinoma. Its long-term efficacy and safety is promising, but needs further study via randomized and prospective trials that include a greater number of patients.

  8. Diversity of the Germination Apparatus in Clostridium botulinum Groups I, II, III and IV

    Directory of Open Access Journals (Sweden)

    Jason Brunt

    2016-10-01

    Full Text Available Clostridium botulinum is a highly dangerous pathogen that forms very resistant endospores that are ubiquitous in the environment, and which, under favourable conditions germinate to produce vegetative cells that multiply and form the exceptionally potent botulinum neurotoxin. To improve the control of botulinum neurotoxin-forming clostridia, it is important to understand the mechanisms involved in spore germination. Here we present models for spore germination in C. botulinum based on comparative genomics analyses, with C. botulinum Groups I and III sharing similar pathways, which differ from those proposed for C. botulinum Groups II and IV. All spores germinate in response to amino acids interacting with a germinant receptor, with four types of germinant receptor identified (encoded by various combinations of gerA, gerB and gerC genes (gerX. There are three gene clusters with an ABC-like configuration; ABC gerX1, ABABCB gerX2 and ACxBBB gerX4, and a single CA-B gerX3 gene cluster. Subtypes have been identified for most germinant receptors types, and the individual GerX subunits of each cluster show similar grouping in phylogenetic trees. C. botulinum Group I contained the largest variety of gerX subtypes, with three gerX1, three gerX2 and one gerX3 subtypes, while C. botulinum Group III contained two gerX1 types and one gerX4. C. botulinum Groups II and IV contained a single germinant receptor, gerX3 and gerX1, respectively. It is likely that all four C. botulinum Groups include a SpoVA channel involved in DPA release. The cortex lytic enzymes present in C. botulinum Groups I and III appear to be CwlJ and SleB, while in C. botulinum Groups II and IV, SleC appears to be important.

  9. Ce(III)/Ce(IV) in methanesulfonic acid as the positive half cell of a redox flow battery

    International Nuclear Information System (INIS)

    Leung, P.K.; Ponce de Leon, C.; Low, C.T.J.; Walsh, F.C.

    2011-01-01

    The characteristics of the Ce(III)/Ce(IV) redox couple in methanesulfonic acid were studied at a platinum disk electrode (0.125 cm 2 ) over a wide range of electrolyte compositions and temperatures: cerium (III) methanesulfonate (0.1-1.2 mol dm -3 ), methanesulfonic acid (0.1-5.0 mol dm -3 ) and electrolyte temperatures (295-333 K). The cyclic voltammetry experiments indicated that the diffusion coefficient of Ce(III) ions was 0.5 x 10 -6 cm 2 s -1 and that the electrochemical kinetics for the oxidation of Ce(III) and the reduction of Ce(IV) was slow. The reversibility of the redox reaction depended on the electrolyte composition and improved at higher electrolyte temperatures. At higher methanesulfonic acid concentrations, the degree of oxygen evolution decreased by up to 50% when the acid concentration increased from 2 to 5 mol dm -3 . The oxidation of Ce(III) and reduction of Ce(IV) were also investigated during a constant current batch electrolysis in a parallel plate zinc-cerium flow cell with a 3-dimensional platinised titanium mesh electrode. The current efficiencies over 4.5 h of the process Ce(III) to Ce(IV) and 3.3 h electrolysis of the reverse reaction Ce(IV) to Ce(III) were 94.0 and 97.6%, respectively. With a 2-dimensional, planar platinised titanium electrode (9 cm 2 area), the redox reaction of the Ce(III)/Ce(IV) system was under mass-transport control, while the reaction on the 3-dimensional mesh electrode was initially under charge-transfer control but became mass-transport controlled after 2.5-3 h of electrolysis. The effect of the side reactions (hydrogen and oxygen evolution) on the current efficiencies and the conversion of Ce(III) and Ce(IV) are discussed.

  10. Imaging of Cranial Nerves III, IV, VI in Congenital Cranial Dysinnervation Disorders.

    Science.gov (United States)

    Kim, Jae Hyoung; Hwang, Jeong Min

    2017-06-01

    Congenital cranial dysinnervation disorders are a group of diseases caused by abnormal development of cranial nerve nuclei or their axonal connections, resulting in aberrant innervation of the ocular and facial musculature. Its diagnosis could be facilitated by the development of high resolution thin-section magnetic resonance imaging. The purpose of this review is to describe the method to visualize cranial nerves III, IV, and VI and to present the imaging findings of congenital cranial dysinnervation disorders including congenital oculomotor nerve palsy, congenital trochlear nerve palsy, Duane retraction syndrome, Möbius syndrome, congenital fibrosis of the extraocular muscles, synergistic divergence, and synergistic convergence. © 2017 The Korean Ophthalmological Society.

  11. Electrocatalytic performance of Pu(IV)/Pu(III) redox reaction at graphene modified glassy carbon electrode

    International Nuclear Information System (INIS)

    Gupta, Ruma; Gamare, J.S.; Kamat, J.V.; Aggarwal, S.K.

    2014-01-01

    In this paper we explore the analytical perspectives of graphene modified electrode utilising commercially available graphene, which is well characterised, completely free from surfactants and has not been purposely oxidised or treated. We compare and critically contrast the electro-analytical performance of graphene modified glassy carbon electrodes (Gr/GC) with that of unmodified GC electrode towards Pu(IV)/Pu(III) redox reaction, monitoring of which has considerable importance in a plethora of areas where electrochemistry is conveniently and beneficially utilised for determination of nuclear fuels

  12. How the Change in IBS Criteria From Rome III to Rome IV Impacts on Clinical Characteristics and Key Pathophysiological Factors.

    Science.gov (United States)

    Aziz, Imran; Törnblom, Hans; Palsson, Olafur S; Whitehead, William E; Simrén, Magnus

    2018-06-08

    The diagnostic criteria for irritable bowel syndrome (IBS) have recently been updated from Rome III to Rome IV. Whereas in Rome III a diagnosis of IBS entailed chronic abdominal pain or discomfort at least 3 days per month, in Rome IV the term discomfort has been removed and the frequency of abdominal pain increased to at least 1 day per week. We examined how this change in IBS criteria impacts on clinical characteristics and pathophysiological factors. A total of 542 Swedish subjects with Rome III IBS completed a baseline questionnaire enquiring for the number of abdominal pain days in the last 10 days; this was subsequently used as a surrogate marker to identify Rome IV IBS, in that (a) those with 0 or 1 day of pain were classed as Rome IV-negative, and (b) those with ≥2 days of pain were classed as Rome IV-positive. Comparisons were made between Rome IV-positive and -negative IBS groups for demographics, IBS subtype, gastrointestinal and psychological symptoms, somatisation, fatigue, disease-specific quality of life, rectal sensitivity, and oro-anal transit time. Overall, 85% of Rome III IBS patients fulfilled the Rome IV criteria for IBS, but 15% did not. Rome IV-positive subjects were significantly more likely to be female, have poorer quality of life, greater pain severity, bloating, somatisation, fatigue, and rectal sensitivity than Rome IV-negative subjects. There were no differences in severity of anxiety or depression, IBS subtypes, bowel habit dissatisfaction, or oro-anal transit time. Finally, increasing number of pain days correlated positively with symptoms and visceral hypersensitivity. Most Rome III-positive IBS patients seeking healthcare fulfil the Rome IV IBS criteria. They constitute a more severe group than those who lose their IBS diagnosis.

  13. Biologically relevant mono- and di-nuclear manganese II/III/IV complexes of mononegative pentadentate ligands

    DEFF Research Database (Denmark)

    Baffert, Carole; Collomb, Marie-Nöelle; Deronzier, Alain

    2003-01-01

    were characterised by UV-visible spectroscopy, ESI mass spectrometry and cyclic voltammetry. In addition, III-IV and II-III species were electrochemically generated. Thus the new mononegative pentadentate ligand systems display significant flexibility in the range of Mn oxidation states and species...

  14. Spectrum of bone marrow changes in patients of chronic kidney disease (stage iii, iv and v)

    International Nuclear Information System (INIS)

    Latif, R.K.; Khan, S.A.; Ahmad, S.Q.; Arshad, U.

    2017-01-01

    To see the various hematological changes in the bone marrow of patients with chronic kidney disease (CKD) stage III, IV and V. Study Design: Cross sectional observational study.Place and Duration of Study: Study was conducted in the department of haematology (Pathology), Army Medical College, Rawalpindi and duration was one year, from Mar 2015 to Feb 2016. Material and Methods: Patients of both sexes and all age groups with CKD stage III, IV and V were included in this study. Patients' histories were recorded. Complete blood counts, bone marrow aspiration and trephine biopsy were done and evaluated microscopically. Mean blood counts of the patients in three groups of CKD were compared. Frequencies of various bone marrow (BM) findings in patients of CKD were calculated. Results: Out of 57 patients, 41 (71.9%) were males while 16 (28%) were females. Mean age was 60 years. There was no statistically significant difference between the mean hemoglobin, mean white cell count and mean platelets count of the patients in three groups of CKD. Reactive changes due to underlying CKD and inflammation were the most frequent findings in the BM of the patients. Conclusion: Anaemia of mild to moderate severity and reactive changes in the BM are the most frequent haematological findings encountered in patients suffering from advanced stage CKD. Since CKD is predominantly a disease of the elderly so it is not rare to find the co-morbidities including plasmacytosis, malignancies and their effects on the BM in patients of CKD. (author)

  15. Novel Cryptosporidium bat genotypes III and IV in bats from the USA and Czech Republic.

    Science.gov (United States)

    Kváč, Martin; Hořická, Anna; Sak, Bohumil; Prediger, Jitka; Salát, Jiří; Širmarová, Jana; Bartonička, Tomáš; Clark, Mark; Chelladurai, Jeba Rose Jennifer Jesudoss; Gillam, Erin; McEvoy, John

    2015-10-01

    Bats from the families Rhinolophidae (n = 90) and Vespertilionidae (n = 191) in the USA and Czech Republic were screened for the presence of Cryptosporidium by microscopic and molecular analysis of faecal samples collected from rectum of dissected animals and from the ground beneath roosting sites. Cryptosporidium oocysts were not detected in any of the 281 faecal specimens examined using the aniline-carbol-methyl violet staining method. Nested PCR amplification, sequencing and phylogenetic analysis of the small ribosomal subunit rRNA and actin genes were used to identify isolates and infer evolutionary relationships. Cryptosporidium parvum was identified in a western small-footed bat (Myotis ciliolabrum) from the USA and a common pipistrelle bats (Pipistrellus pipistrellus) from the Czech Republic. Two novel genotypes were identified and named Cryptosporidium bat genotype III and IV. Bat genotype III was found in two big brown bats (Eptesicus fuscus) from the USA. Bat genotype IV was detected in two common pipistrelle bats from the Czech Republic.

  16. Brush Day & Night Phase III to Phase IV: ensuring that good oral health habits are sustainable.

    Science.gov (United States)

    Melo, Paulo; Fine, Charlotte; Malone, Sinead; Horn, Virginie

    2018-05-01

    Over the past 10 years, the FDI-Unilever Brush Day & Night partnership has significantly influenced the life of children worldwide through the implementation of school programmes for oral health education and prevention. This article reports the key facts and outcomes of Phase III of the partnership, and announces the launch of Phase IV. During Phase III, the expert advisors of the Brush Day & Night partnership conducted a longitudinal study to evaluate the impact of the '21 Day' programme in almost 8,000 children in 10 countries. Analysis revealed the effectiveness of the 21 Day programme in sustainably educating children to brush their teeth twice a day, with the greatest impact observed in children aged 7-9 years. With the launch of Phase IV, the Brush Day & Night partnership will continue to deliver its oral health school programme for 7-9 year-old children with a strengthened methodology, including randomized sampling and control groups. The scope of the evaluation will be broadened to include oral health-related quality of life indicators, and monitoring of the oral health knowledge of children's parents/carers. © 2018 FDI World Dental Federation.

  17. Design of fractional order differentiator using type-III and type-IV discrete cosine transform

    Directory of Open Access Journals (Sweden)

    Manjeet Kumar

    2017-02-01

    Full Text Available In this paper, an interpolation method based on discrete cosine transform (DCT is employed for digital finite impulse response-fractional order differentiator (FIR-FOD design. Here, a fractional order digital differentiator is modeled as finite impulse response (FIR system to get an optimized frequency response that approximates the ideal response of a fractional order differentiator. Next, DCT-III and DCT-IV are utilized to determine the filter coefficients of FIR filter that compute the Fractional derivative of a given signal. To improve the frequency response of the proposed FIR-FOD, the filter coefficients are further modified using windows. Several design examples are presented to demonstrate the superiority of the proposed method. The simulation results have also been compared with the existing FIR-FOD design methods such as DFT interpolation, radial basis function (RBF interpolation, DCT-II interpolation and DST interpolation methods. The result reveals that the proposed FIR-FOD design technique using DCT-III and DCT-IV outperforms DFT interpolation, RBF interpolation, DCT-II interpolation and DST interpolation methods in terms of magnitude error.

  18. Kinetics and mechanism of RuIII catalysed oxidation of 1,2,3,4-tetrahydro-naphthalene (tetralin) by CeIV in aqueous nitric acid medium

    International Nuclear Information System (INIS)

    Vijaya Bhaskar Rao, N.; Anand Rao, M.

    2009-01-01

    The kinetics and mechanism of Ru III catalysed oxidation of 1,2,3,4-tetrahydronaphthalene (tetralin) by Ce IV in aqueous nitric acid to tetralone under the conditions (TL) > > (Ce IV ) at different temperatures (30-50 deg C) have been studied in 3.0 mol dm -3 nitric acid medium. The experimentally observed rate law conforms to -d(Ce IV )/dt = kK(Ce IV )(TL)(Ru III )/l + K(TL) + K(Ru III ). (author)

  19. Solution chemistry of Mo(III) and Mo(IV): Thermodynamic foundation for modeling localized corrosion

    International Nuclear Information System (INIS)

    Wang Peiming; Wilson, Leslie L.; Wesolowski, David J.; Rosenqvist, Joergen; Anderko, Andrzej

    2010-01-01

    To investigate the behavior of molybdenum dissolution products in systems that approximate localized corrosion environments, solubility of Mo(III) in equilibrium with solid MoO 2 has been determined at 80 deg. C as a function of solution acidity, chloride concentration and partial pressure of hydrogen. The measurements indicate a strong increase in solubility with acidity and chloride concentration and a weak effect of hydrogen partial pressure. The obtained results have been combined with literature data for systems containing Mo(III), Mo(IV), and Mo(VI) in solutions to develop a comprehensive thermodynamic model of aqueous molybdenum chemistry. The model is based on a previously developed framework for simulating the properties of electrolyte systems ranging from infinite dilution to solid saturation or fused salt limit. To reproduce the measurements, the model assumes the presence of a chloride complex of Mo(III) (i.e., MoCl 2+ ) and hydrolyzed species (MoOH 2+ , Mo(OH) 2 + , and Mo(OH) 3 0 ) in addition to the Mo 3+ ion. The model generally reproduces the experimental data within experimental scattering and provides a tool for predicting the phase behavior and speciation in complex, concentrated aqueous solutions. Thus, it provides a foundation for simulating the behavior of molybdenum species in localized corrosion environments.

  20. Hepatic Artery Resection for Bismuth Type III and IV Hilar Cholangiocarcinoma: Is Reconstruction Always Required?

    Science.gov (United States)

    Hu, Hai-Jie; Jin, Yan-Wen; Zhou, Rong-Xing; Shrestha, Anuj; Ma, Wen-Jie; Yang, Qin; Wang, Jun-Ke; Liu, Fei; Cheng, Nan-Sheng; Li, Fu-Yu

    2018-03-06

    The objective of the study is to examine the feasibility of hepatic artery resection (HAR) without subsequent reconstruction (RCS) in specified patients of Bismuth type III and IV hilar cholangiocarcinoma. We retrospectively reviewed 63 patients who underwent hepatic artery resection for Bismuth type III and IV hilar cholangiocarcinoma. These patients were subsequently enrolled into two groups based on whether the artery reconstruction was conducted. Postoperative morbidity and mortality, and long-term survival outcome were compared between the two groups. There were 29 patients in HAR group and 34 patients in the HAR + RCS group. Patients with hepatic artery reconstruction tended to have longer operative time (545.6 ± 143.1 min vs. 656.3 ± 192.8 min; P = 0.013) and smaller tumor size (3.0 ± 1.1 cm vs. 2.5 ± 0.9 cm; P = 0.036). The R0 resection margin was comparable between the HAR group and HAR + RCS group (86.2 vs. 85.3%; P > 0.05). Twelve patients (41.4%) with 24 complications in HAR group and 13 patients (38.2%) with 25 complications in HAR + RCS group were recorded (P = 0.799). The postoperative hepatic failure rate (13.8 vs. 5.9%) and postoperative mortality rate (3.4% vs. 2.9%) were also comparable between the two groups. In the HAR group, the overall 1-, 3-, and 5-year survival rates were 72, 41, and 19%, respectively; while in the HAR + RCS group, the overall 1-, 3-, and 5-year survival rates were 79, 45, and 25%, respectively (P = 0.928). Hepatic artery resection without reconstruction is also a safe and feasible surgical procedure for highly selected cases of Bismuth type III and IV hilar cholangiocarcinoma.

  1. Multidisciplinary management of very advanced stage III and IV melanoma: Proof-of-principle.

    Science.gov (United States)

    Gutman, Haim; Ben-Ami, Eytan; Shapira-Frommer, Roni; Schachter, Jacob

    2012-08-01

    Patients with potentially resectable advanced stage III and IV melanoma are a selected subgroup that gain maximal advantage if treated in a melanoma center. Surgery combined with chemo/chemobiotherapy may yield durable remission and long-term palliation. Thirty-seven non-randomly selected patients underwent systemic therapy with the aim of consolidating treatment by surgery. Data were collected prospectively, and analyzed retrospectively. The median follow-up from diagnosis was 50 (3-307) months and 15 (1-156) months when calculated from the last intervention. Twenty-two males and 15 females, with a median age at diagnosis of 44 (20-71) years, with 13 trunk, 13 extremity, 3 head and neck and 8 unknown primary melanomas were included. There were 17 stage III and 20 stage IV patients with a median Breslow thickness of 3.7 (0.45-26) mm. Chemo/chemobiotherapy achieved 7 clinical complete responses (cCRs), 28 partial responses (PRs) and 2 instances of stable disease. Six of the 7 cCRs were operated on, securing pathological complete response in 5 and PR in one. Four of these five and the PR patient still have no evidence of disease (NED). Twenty-one of 30 PR patients were rendered NED by surgery; 14 of these 21 patients succumbed to melanoma, and one is alive with stable disease. Overall, 11 of 37 patients have not succumbed to melanoma, with a median of 72 (14-156) months survival following the last intervention. Of the eight patients with unknown primary melanomas, five have not succumbed to melanoma, with a median of 89 (30-156) months survival following the last intervention. Patients with marginally resectable stage III and IV melanoma have a significant 30% chance, according to this series, for durable remission if treated by a multidisciplinary team in a melanoma center using induction chemobiotherapy and surgery. Results are more favorable for patients with an unknown primary lesion. In view of the currently approved new effective treatments for melanoma, this

  2. Bioenergetics and ATP Synthesis during Exercise: Role of Group III/IV Muscle Afferents.

    Science.gov (United States)

    Broxterman, Ryan M; Layec, Gwenael; Hureau, Thomas J; Morgan, David E; Bledsoe, Amber D; Jessop, Jacob E; Amann, Markus; Richardson, Russell S

    2017-12-01

    The purpose of this study was to investigate the role of the group III/IV muscle afferents in the bioenergetics of exercising skeletal muscle beyond constraining the magnitude of metabolic perturbation. Eight healthy men performed intermittent isometric knee-extensor exercise to task failure at ~58% maximal voluntary contraction under control conditions (CTRL) and with lumbar intrathecal fentanyl to attenuate group III/IV leg muscle afferents (FENT). Intramuscular concentrations of phosphocreatine (PCr), inorganic phosphate (Pi), diprotonated phosphate (H2PO4), adenosine triphosphate (ATP), and pH were determined using phosphorous magnetic resonance spectroscopy (P-MRS). The magnitude of metabolic perturbation was significantly greater in FENT compared with CTRL for [Pi] (37.8 ± 16.8 vs 28.6 ± 8.6 mM), [H2PO4] (24.3 ± 12.2 vs 17.9 ± 7.1 mM), and [ATP] (75.8% ± 17.5% vs 81.9% ± 15.8% of baseline), whereas there was no significant difference in [PCr] (4.5 ± 2.4 vs 4.4 ± 2.3 mM) or pH (6.51 ± 0.10 vs 6.54 ± 0.14). The rate of perturbation in [PCr], [Pi], [H2PO4], and pH was significantly faster in FENT compared with CTRL. Oxidative ATP synthesis was not significantly different between conditions. However, anaerobic ATP synthesis, through augmented creatine kinase and glycolysis reactions, was significantly greater in FENT than in CTRL, resulting in a significantly greater ATP cost of contraction (0.049 ± 0.016 vs 0.038 ± 0.010 mM·min·N). Group III/IV muscle afferents not only constrain the magnitude of perturbation in intramuscular Pi, H2PO4, and ATP during small muscle mass exercise but also seem to play a role in maintaining efficient skeletal muscle contractile function in men.

  3. Hyperfractionated radiotherapy and simultaneous cisplatin for stage-III and -IV carcinomas of the head and neck. Long-term results including functional outcome

    Energy Technology Data Exchange (ETDEWEB)

    Huguenin, P.; Glanzmann, C.; Taussky, D.; Luetolf, U.M. [Univ. Hospital Zurich (Switzerland). Radiation Oncology Dept.; Schmid, S.; Moe, K. [Univ. Hospital Zurich (Switzerland). Dept. of Head and Neck Surgery

    1998-08-01

    highly efficient in controlling moderately advanced to advanced cancers of the head and neck. Second primary tumors are the main cause of death after 3 years and were observed outside of the irradiated area, most frequently in the lung. Even after RT of large volumes to a high dose, salvage surgery can be successfully performed in individual cases. Self-reported quality of life of surviving patients is good, despite xerostomy-associated nutritional difficulties. (orig.) [Deutsch] Ziel: Analyse der Ueberlebensrate, des krankheitsspezifischen Ueberlebens, des Rezidivmusters, der Spaettoxizitaet sowie der subjektiven Lebensqualitaet nach hyperfraktionierter Radiotherapie (RT) und gleichzeitiger Cisplatin-Chemotherapie (CDDP) bei Patienten mit mindestens zwei Jahren Beobachtungszeit im Rahmen einer prospektiven Phase-II-Studie. Patienten und Methode: Im Rahmen einer Pilotstudie (1988 bis 1994) wurden 64 Patienten (medianes Alter 55,5 Jahre) mit Stadium III oder IV kombiniert behandelt: RT 1,2 Gy zweimal taeglich bis 74,4 Gy, CDDP 20 mg/m{sup 2} taeglich an den Tagen 1 bis 5 der ersten und fuenften Woche. Die Ueberlebenskurven sowie die Toxizitaet wurden aktuariell berechnet. Die mediane Beobachtungszeit war 3,3 Jahre fuer alle respektive 5,2 Jahre fuer die ueberlebenden Patienten. Zur Einschaetzung der Lebensqualitaet wurden 23 tumorfrei ueberlebende Patienten angefragt, den EORTC-QLQ-C30-Fragebogen sowie das ergaenzende Modul fuer Kopf-Hals-Tumoren H and N35 auszufuellen. Ergebnisse: Das Gesamtueberleben betrug nach fuenf Jahren 37%, waehrend das krankheitsspezifische Ueberleben mit 59% deutlich hoeher lag. 23 Patienten sind am Tumor verstorben. Zweittumoren, hauptsaechlich Lungenkarzinome (n=8), wurden bei 13 Patienten registriert und waren die hauptsaechliche Todesursache nach ueber drei Jahren. Die lokale Tumorkontrolle ohne zusaetzliche Chirurgie betrug 74% nach fuenf Jahren und war fuer alle Lokalisationen und Stadien gleich; die lokoregionaere Tumorkontrollrate lag

  4. High-level inhibition of mitochondrial complexes III and IV is required to increase glutamate release from the nerve terminal

    Directory of Open Access Journals (Sweden)

    Kilbride Seán M

    2011-07-01

    Full Text Available Abstract Background The activities of mitochondrial complex III (ubiquinol-cytochrome c reductase, EC 1.10.2.2 and complex IV (cytochrome c oxidase EC 1.9.3.1 are reduced by 30-70% in Huntington's disease and Alzheimer's disease, respectively, and are associated with excitotoxic cell death in these disorders. In this study, we investigated the control that complexes III and complex IV exert on glutamate release from the isolated nerve terminal. Results Inhibition of complex III activity by 60-90% was necessary for a major increase in the rate of Ca2+-independent glutamate release to occur from isolated nerve terminals (synaptosomes depolarized with 4-aminopyridine or KCl. Similarly, an 85-90% inhibition of complex IV activity was required before a major increase in the rate of Ca2+-independent glutamate release from depolarized synaptosomes was observed. Inhibition of complex III and IV activities by ~ 60% and above was required before rates of glutamate efflux from polarized synaptosomes were increased. Conclusions These results suggest that nerve terminal mitochondria possess high reserves of complex III and IV activity and that high inhibition thresholds must be reached before excess glutamate is released from the nerve terminal. The implications of the results in the context of the relationship between electron transport chain enzyme deficiencies and excitotoxicity in neurodegenerative disorders are discussed.

  5. High-level inhibition of mitochondrial complexes III and IV is required to increase glutamate release from the nerve terminal

    LENUS (Irish Health Repository)

    Kilbride, Sean M

    2011-07-26

    Abstract Background The activities of mitochondrial complex III (ubiquinol-cytochrome c reductase, EC 1.10.2.2) and complex IV (cytochrome c oxidase EC 1.9.3.1) are reduced by 30-70% in Huntington\\'s disease and Alzheimer\\'s disease, respectively, and are associated with excitotoxic cell death in these disorders. In this study, we investigated the control that complexes III and complex IV exert on glutamate release from the isolated nerve terminal. Results Inhibition of complex III activity by 60-90% was necessary for a major increase in the rate of Ca2+-independent glutamate release to occur from isolated nerve terminals (synaptosomes) depolarized with 4-aminopyridine or KCl. Similarly, an 85-90% inhibition of complex IV activity was required before a major increase in the rate of Ca2+-independent glutamate release from depolarized synaptosomes was observed. Inhibition of complex III and IV activities by ~ 60% and above was required before rates of glutamate efflux from polarized synaptosomes were increased. Conclusions These results suggest that nerve terminal mitochondria possess high reserves of complex III and IV activity and that high inhibition thresholds must be reached before excess glutamate is released from the nerve terminal. The implications of the results in the context of the relationship between electron transport chain enzyme deficiencies and excitotoxicity in neurodegenerative disorders are discussed.

  6. Analysis of novel silicon and III-V solar cells by simulation and experiment; Analyse neuartiger Silizium- und III-V-Solarzellen mittels Simulation und Experiment

    Energy Technology Data Exchange (ETDEWEB)

    Hermle, Martin

    2008-11-27

    This work presents various simulation studies of silicon and III-V solar cells. For standard silicon solar cells, one of the critical parameters to obtain good performance, is the rear side recombination velocity. The optical and electrical differences of the different cell structures were determined. The optical differences and the effective recombination velocity Sback of the different rear side structures for 1 Ohmcm material were extracted. Beside standard silicon solar cells, back junction silicon solar cells were investigated. Especially the influence of the front surface field and the electrical shading due to the rear side, was investigated. In the last two chapters, III-V solar cells were analysed. For the simulation of III-V multi-junction solar cells, the simulation of the tunneldiode is the basic prerequisite. In this work, the numerical calibration of an GaAs tunneldiode was achieved by using an non-local tunnel model. Using this model, it was possible to successfully simulate a III-V tandem solar cell. The last chapter deals with an optimization of the III-V 3-junction cell for space applications. Especially the influence of the GaAs middle cell was investigated. Due to structural changes, the end-of-life efficiency was drastically increased.

  7. Advanced-stage III/IV follicular lymphoma. Treatment strategies for individual patients

    Energy Technology Data Exchange (ETDEWEB)

    Heinzelmann, Frank; Bamberg, Michael; Weinmann, Martin [Dept. of Radiation Oncology, Univ. of Tuebingen (Germany); Ottinger, Hellmut [Dept. of Bone Marrow Transplantation, Univ. of Essen (Germany); Engelhard, Marianne [Dept. of Radiation Oncology, Univ. of Essen (Germany); Soekler, Martin [Dept. of Internal Medicine II, Univ. of Tuebingen (Germany)

    2010-05-15

    Background: in patients with advanced-stage III/IV follicular lymphoma (FL), there are many treatment options available. The current challenge is to choose the optimal strategy for the individual patient. Methods: the literature was reviewed with respect to treatment strategies in patients with advanced FL by screening the PubMed databank. Results: in advanced-stage III/IV FL, median survival may approach 8-10 years. Treatment strategies include a watch-and-wait strategy, chemoimmunotherapy, monotherapy with rituximab, and - as an experimental approach so far - radioimmunotherapy. The use of autologous hematopoietic stem cell transplantation (HSCT) for patients in first remission or chemosensitive relapse prolongs progression-free survival while the effect on overall survival remains unclear compared to standard chemotherapy. However, long-term results are flawed by high relapse rates and risk of secondary malignancies. In patients with relapsed/chemoresistant disease, allogeneic HSCT constitutes the only curative approach but is associated with high treatment-related mortality. In the palliative setting, low-dose involved-field irradiation constitutes an effective treatment option in order to control local symptoms with potential long-lasting response. Conclusion: in case of advanced-disease FL, asymptomatic patients can be managed expectantly. In symptomatic patients, chemoimmunotherapy is regarded as standard therapy. In symptomatic elderly patients with relevant comorbidities, rituximab {+-} single-agent chemotherapy, or low-dose involved-field radiotherapy might be appropriate. For younger patients with chemoresistant/relapsed disease, allogeneic HSCT might be considered, since advances in supportive care and better patient selection have resulted in improved outcomes. (orig.)

  8. Comparison of outcomes in patients with stage III versus limited stage IV non-small cell lung cancer

    International Nuclear Information System (INIS)

    Cheruvu, Praveena; Metcalfe, Su K; Metcalfe, Justin; Chen, Yuhchyau; Okunieff, Paul; Milano, Michael T

    2011-01-01

    Standard therapy for metastatic non small cell lung cancer (NSCLC) includes palliative systemic chemotherapy and/or radiotherapy. Recent studies of patients with limited metastases treated with curative-intent stereotactic body radiation therapy (SBRT) have shown encouraging survival. We hypothesized that patients treated with SBRT for limited metastases have comparable outcomes with those treated with curative-intent radiation for Stage III NSCLC. We retrospectively reviewed the records of NSCLC patients treated with curative-intent radiotherapy at the University of Rochester from 2000-2008. We identified 3 groups of patients with NSCLC: stage III, stage IV, and recurrent stage IV (initial stage I-II). All stage IV NSCLC patients treated with SBRT had ≤ 8 lesions. Of 146 patients, 88% had KPS ≥ 80%, 30% had > 5% weight loss, and 95% were smokers. The 5-year OS from date of NSCLC diagnosis for stage III, initial stage IV and recurrent stage IV was 7%, 14%, and 27% respectively. The 5-year OS from date of metastatic diagnosis was significantly (p < 0.00001) superior among those with limited metastases (≤ 8 lesions) versus stage III patients who developed extensive metastases not amenable to SBRT (14% vs. 0%). Stage IV NSCLC is a heterogeneous patient population, with a selected cohort apparently faring better than Stage III patients. Though patients with limited metastases are favorably selected by virtue of more indolent disease and/or less bulky disease burden, perhaps staging these patients differently is appropriate for prognostic and treatment characterization. Aggressive local therapy may be indicated in these patients, though prospective clinical studies are needed

  9. Redox reactions of Pu(IV) and Pu(III) in the presence of acetohydroxamic acid in HNO(3) solutions.

    Science.gov (United States)

    Tkac, Peter; Precek, Martin; Paulenova, Alena

    2009-12-21

    The reduction of Pu(IV) in the presence of acetohydroxamic acid (HAHA) was monitored by vis-NIR spectroscopy. All experiments were performed under low HAHA/Pu(IV) ratios, where only the Pu(IV)-monoacetohydroxamate complex and Pu uncomplexed with HAHA were present in relevant concentrations. Time dependent concentrations of all absorbing species were resolved using molar extinction coefficients for Pu(IV), Pu(III), and the Pu(AHA)(3+) complex by deconvolution of spectra. From fitting of the experimental data by rate equations integrated by a numeric method three reactions were proposed to describe a mechanism responsible for the reduction and oxidation of plutonium in the presence of HAHA and HNO(3). Decomposition of Pu(AHA)(3+) follows a second order reaction mechanism with respect to its own concentration and leads to the formation of Pu(III). At low HAHA concentrations, a two-electron reduction of uncomplexed Pu(IV) with HAHA also occurs. Formed Pu(III) is unstable and slowly reoxidizes back to Pu(IV), which, at the point when all HAHA is decomposed, can be catalyzed by the presence of nitrous acid.

  10. Multiscale structural characterizations of mixed U(iv)-An(iii) oxalates (An(iii) = Pu or Am) combining XAS and XRD measurements.

    Science.gov (United States)

    Arab-Chapelet, B; Martin, P M; Costenoble, S; Delahaye, T; Scheinost, A C; Grandjean, S; Abraham, F

    2016-04-28

    Mixed actinide(III,IV) oxalates of the general formula M2.2UAn(C2O4)5·nH2O (An = Pu or Am and M = H3O(+) and N2H5(+)) have been quantitatively precipitated by oxalic precipitation in nitric acid medium (yield >99%). Thorough multiscale structural characterization using XRD and XAS measurements confirmed the existence of mixed actinide oxalate solid solutions. The XANES analysis confirmed that the oxidation states of the metallic cations, tetravalent for uranium and trivalent for plutonium and americium, are maintained during the precipitation step. EXAFS measurements show that the local environments around U(+IV), Pu(+III) and Am(+III) are comparable, and the actinides are surrounded by ten oxygen atoms from five bidentate oxalate anions. The mean metal-oxygen distances obtained by XAS measurements are in agreement with those calculated from XRD lattice parameters.

  11. Arthroscopic debridement for grade III and IV chondromalacia of the knee in patients older than 60 years.

    Science.gov (United States)

    van den Bekerom, Michel P J; Patt, Thomas W; Rutten, Sjoerd; Raven, Eric E J; van de Vis, Harm M V; Albers, G H Rob

    2007-10-01

    Arthroscopic debridement has been used to treat patients with degenerative knee osteoarthritis, although there is sometimes conflicting evidence documenting its efficacy. This study evaluates the success of arthroscopic debridement in elderly patients with grade III and IV chondromalacia of the knee as measured by patient satisfaction and the need for additional surgery. From December 1998 to August 2001, a total of 102 consecutive cases of knee arthroscopy in 99 patients > 60 years were performed. Average follow-up was 34 months (range: 7-104 months). Patients were asked about their satisfaction using a visual analog scale, and the presence of meniscal lesions during arthroscopy and the treatment for these lesions were evaluated. Knees also were assessed for articular surface degeneration using Outerbridge's classification for chondromalacia. The need for and type of additional surgery was evaluated. During arthroscopy, meniscal lesions requiring a partial meniscectomy were found in 95 knees. Chondromalacia was found in 92 knees; 53 knees had grade I or II chondromalacia and 39 knees had grade III or IV chondromalacia. Additional surgery was performed in 17 knees. Mean patient satisfaction score was 73 (range: 50-100) in the 39 knees with grade III or IV chondromalacia after arthroscopic debridement was performed. These findings suggest arthroscopic debridement in elderly patients has a place in the treatment algorithm for grade III or IV chondromalacia of the knee.

  12. CHARACTERIZATION OF ORG-20241, A COMBINED PHOSPHODIESTERASE IV/III CYCLIC-NUCLEOTIDE PHOSPHODIESTERASE INHIBITOR FOR ASTHMA

    NARCIS (Netherlands)

    NICHOLSON, CD; BRUIN, J; BARRON, E; SPIERS, [No Value; DEBOER, J; VANAMSTERDAM, RGM; ZAAGSMA, J; KELLY, JJ; DENT, G; GIEMBYCZ, MA; BARNES, PJ

    The pharmacological profile of a novel cyclic nucleotide phosphodiesterase (PDE) inhibitor, Org 20241, has been characterized. The compound selectively inhibits PDE IV (plC(50), 5.2-6.1) and PDE III (plC(50), 4.4-4.6) from animal and human tissues. Org 20241 relaxed preparations of bovine trachea

  13. Classification of pediatric functional gastrointestinal disorders related to abdominal pain using Rome III vs. Rome IV criterions.

    Science.gov (United States)

    Edwards, Trent; Friesen, Craig; Schurman, Jennifer V

    2018-03-17

    The primary purpose of this study was to compare Rome III and IV evaluation criteria for irritable bowel syndrome (IBS), functional dyspepsia (FD), and an overlap syndrome consisting of both IBS and FD by assessing the frequency of each diagnosis in a population of children with chronic abdominal pain. Frequencies of Rome IV FD subtypes of postprandial distress syndrome (PDS) and epigastric pain syndrome (EPS) were determined and FD/IBS overlap symptom associations were also assessed. We conducted a cross-sectional retrospective chart review of 106 pediatric patients who had completed standardized medical histories as part of their evaluation for chronic abdominal pain. The patients ranged from eight to 17 years of age and reported having abdominal pain at least weekly for 8 weeks. Patients whose evaluation revealed gastrointestinal disease were excluded. The patients' diagnoses were determined by a single pediatric gastroenterologist utilizing the specific criteria for Rome III and IV, respectively. Patients were significantly more likely to be diagnosed with FD (84.9% vs. 52.8%), IBS (69.8% vs. 34%), and FD/IBS overlap (58.5% vs. 17.9%) by Rome IV criteria, as compared to Rome III criteria. With regard to Rome IV FD subtypes, 81.1% fulfilled criteria for PDS, 11.1% fulfilled criteria for EPS, 6.7% fulfilled criteria for both, and 1.1% did not fulfill criteria for either. Finally, we found an increased frequency of diarrhea and pain with eating in the overlap group compared to the non-overlap group of Rome III, while only an increased frequency of diarrhea was found in the overlap group compared to the non-overlap group of Rome IV. Our data demonstrate that utilizing Rome IV criteria, as compared to Rome III, results in an increase in the diagnosis of FD, a two-fold increase in the diagnosis of IBS, and a three-fold increase in the diagnosis of FD/IBS overlap. Rome IV criteria appears to result in greater heterogeneity within diagnostic categories. It is important

  14. Identification of novel mammalian hosts and Brazilian biome geographic distribution of Trypanosoma cruzi TcIII and TcIV.

    Science.gov (United States)

    Barros, Juliana Helena S; Xavier, Samanta Cristina C; Bilac, Daniele; Lima, Valdirene Santos; Dario, Maria Augusta; Jansen, Ana Maria

    2017-08-01

    Trypanosoma cruzi is a parasitic protozoan responsible for Chagas disease. Seven different Discrete Typing Units (DTUs) of T. cruzi are currently identified in nature: TcI-TcVI, and TcBat whose distribution patterns in nature, hosts/reservoirs and eco-epidemiological importance are still little known. Here, we present novel data on the geographic distribution and diversity of mammalian hosts and vectors of T. cruzi DTUs TcIII and TcIV. In this study, we analyzed 61 T. cruzi isolates obtained from 18 species of mammals (five orders) and two Hemiptera genera. Samples were collected from five Brazilian biomes (Pantanal, Caatinga, Cerrado, Atlantic Rainforest, and Amazon) previously characterized as Z3 or mixed infection (TcI-Z3) by mini-exon gene PCR. To identify TcIII and TcIV genotypes, we applied restriction fragment length polymorphism analysis to the PCR-amplified histone 3 gene. DTUs TcIII and TcIV were identified in single and mixed infections from wide dispersion throughout five Brazilian biomes studied, with TcIV being the most common. Pantanal was the biome that displayed the largest number of samples characterized as TcIII and TcIV in single and mixed infections, followed by Atlantic Rainforest and Amazon. Species from the Didelphimorphia order displayed the highest frequency of infection and were found in all five biomes. We report, for the first time, the infection of a species of the Artiodactyla order by DTU TcIII. In addition, we describe new host species: five mammals (marsupials and rodents) and two genera of Hemiptera. Our data indicate that DTUs TcIII and TcIV are more widespread and infect a larger number of mammalian species than previously thought. In addition, they are transmitted in restricted foci and cycles, but in different microhabitats and areas with distinct ecological profiles. Finally, we show that DTUs TcIII and TcIV do not present any specific association with biomes or host species. Copyright © 2017. Published by Elsevier B.V.

  15. Studies on Pu(IV)/(III)-oxalate precipitation from nitric acid containing high concentration of calcium and fluoride ions

    International Nuclear Information System (INIS)

    Kalsi, P.K.; Pawar, S.M.; Ghadse, D.R.; Joshi, A.R.; Ramakrishna, V.V.; Vaidya, V.N.; Venugopal, V.

    2003-01-01

    Plutonium (IV)/(III) oxalate precipitation from nitric acid solution, containing large amount of calcium and fluoride ions was investigated. It was observed that direct precipitation of Pu (IV) oxalate from nitric acid containing large amount of calcium and fluoride ions did not give good decontamination of Pu from calcium and fluoride impurities. However, incorporation of hydroxide precipitation using ammonium hydroxide prior to Pu (IV) oxalate precipitation results into PuO 2 with much less calcium and fluoride impurities. Whereas, good decontamination from calcium and fluoride impurities could be obtained by employing Pu (III) oxalate precipitation directly from nitric acid containing large amount of calcium and fluoride ions. A method was also developed to recover Pu from the oxalate waste containing calcium and fluoride ions. (author)

  16. Hydration structures of U(III) and U(IV) ions from ab initio molecular dynamics simulations

    International Nuclear Information System (INIS)

    Leung, Kevin; Nenoff, Tina M.

    2012-01-01

    We apply DFT+U-based ab initio molecular dynamics simulations to study the hydration structures of U(III) and U(IV) ions, pertinent to redox reactions associated with uranium salts in aqueous media. U(III) is predicted to be coordinated to 8 water molecules, while U(IV) has a hydration number between 7 and 8. At least one of the innershell water molecules of the hydrated U(IV) complex becomes spontaneously deprotonated. As a result, the U(IV)–O pair correlation function exhibits a satellite peak at 2.15 Å associated with the shorter U(IV)–(OH − ) bond. This feature is not accounted for in analysis of extended x-ray absorption fine structure and x-ray adsorption near edge structure measurements, which yield higher estimates of U(IV) hydration numbers. This suggests that it may be useful to include the effect of possible hydrolysis in future interpretation of experiments, especially when the experimental pH is close to the reported hydrolysis equilibrium constant value.

  17. [Surgical treatment for talar neck fracture of Hawkins III, IV type with compression hollow screws combined with external fixator].

    Science.gov (United States)

    Wang, Xian-Xun; Wan, Chang-Tao; Yu, Li

    2017-05-25

    To investigate the clinical effects of compression hollow screws combined with external fixator in treating talar neck fracture of Hawkins III, IV type. From March 2010 to August 2014, 15 patients with talar neck fractures of Hawkins III, IV type were treated by open reduction and compression hollow screws fixation complicated with external fixator fixation. Including 9 males and 6 females, aged from 17 to 65 years old with an average of 37.5 years old. There were 9 cases of Hawkins III and 6 cases of Hawkins IV type. Postoperative radiographs and CT of ankle were used to evaluate the fracture healing and talar necrosis. The function of ankle and foot were evaluated by American Society of Ankle and Foot Surgery(AOFAS). All the patients were followed up for 8 to 55 months with an average of 23.5 months and all fractures got bone healing from 13 to 38 weeks with an average of (17.99±6.81) weeks. Traumatic arthritis occurred in 7 cases and talar necrosis in 6 cases (2 cases of type III and 4 cases of type IV) after operation. The average AOFAS score was 61.80±18.75, including excellent in 4 cases, good in 2 cases, fair in 4 cases and poor in 5 cases. Talar neck fracture with Hawkins III, IV type has large possibility to develop avascular necrosis. Hollow compression screw combined with external fixation may late weight-bearing for ankle and can sufficiently guarantee bone healing time, and achieve good results for the treatment of talar neck fracture.

  18. The hyperfractionation in the oropharynx carcinomas treatment: stages III and IV

    International Nuclear Information System (INIS)

    Pinto, L.H.J.

    1990-01-01

    From April 1986 until May 1989. 112 patients with stages III and IV oropharynx carcinomas were included in a protocol comparing the use of Hyperfractionation and Conventional Fractionation. The doses were 6600 rad in 33 fractions of 200 rad for the conventional fractionation and 7040 rad in 64 fractions, two fractions of 110 rad per day for the hyperfractionation. As of January 1990 an analysis was performed in 98 patients, with a median follow-up of 14 months. The probability of complete responses in the oropharynx was 74%, with 84% for the hyperfractionation and 64% for the conventional fractionation ( p < 0,05). Survival was improved in 42 months for those patients treated with hyperfractionation: 27% versus 8% (p < 0,05). In patients with lesions out of the base of the tongue and in those with Karnofsky performance status of 50%, 60% and 70%, survival was improved with the use of hyperfractionation (p = 0,02 and p 0,006 respectively. The study demonstrates the superiority of hyperfractionation over the classical fractionation in the treatment of patients with carcinoma of the oropharynx. (author)

  19. Optimized FFTF Acceptance Test Program covering Phases III, IV, and V

    International Nuclear Information System (INIS)

    Wykoff, W.R.; Jones, D.H.

    1977-03-01

    A detailed review of Phases III, IV, and V of the FFTF Acceptance Test Program has been completed. The purpose of this review was to formulate that test sequence which not only meets requirements for safe, reliable and useful operation of the plant, but also results in the earliest prudent demonstration of full-power performance. A test sequence based on the underlying assumption that sodium flows into the secondary sodium storage tank (T-44) no later than August 31, 1978, is described in detail. A time-scale which allows extra time to put systems and equipment into operation the first time, debugging, and learning how to operate most effectively has been superimposed on the test sequence. Time is not included for major equipment malfunctions. This test plan provides the basis for coordinating the many and varied activities and interfaces necessary for successful and timely execution of the FFTF Acceptance Test Program. In this report, the need dates have been identified for presently scheduled test articles and standard core components

  20. Dependence of the Ce(iii)/Ce(iv) ratio on intracellular localization in ceria nanoparticles internalized by human cells

    KAUST Repository

    Ferraro, Daniela; Tredici, Ilenia G.; Ghigna, Paolo; Castillio-Michel, Hiram; Falqui, Andrea; Di Benedetto, Cristiano; Alberti, Giancarla; Ricci, Vittorio; Anselmi-Tamburini, Umberto; Sommi, Patrizia

    2017-01-01

    CeO2 nanoparticles (CNPs) have been investigated as promising antioxidant agents with significant activity in the therapy of diseases involving free radicals or oxidative stress. However, the exact mechanism responsible for CNP activity has not been completely elucidated. In particular, in situ evidence of modification of the oxidative state of CNPs in human cells and their evolution during cell internalization and subsequent intracellular distribution has never been presented. In this study we investigated modification of the Ce(iii)/Ce(iv) ratio following internalization in human cells by X-ray absorption near edge spectroscopy (XANES). From this analysis on cell pellets, we observed that CNPs incubated for 24 h showed a significant increase in Ce(iii). By coupling on individual cells synchrotron micro-X-ray fluorescence (μXRF) with micro-XANES (μXANES) we demonstrated that the Ce(iii)/Ce(iv) ratio is also dependent on CNP intracellular localization. The regions with the highest CNP concentrations, suggested to be endolysosomes by transmission electron microscopy, were characterized by Ce atoms in the Ce(iv) oxidation state, while a higher Ce(iii) content was observed in regions surrounding these areas. These observations suggest that the interaction of CNPs with cells involves a complex mechanism in which different cellular areas play different roles.

  1. Dependence of the Ce(iii)/Ce(iv) ratio on intracellular localization in ceria nanoparticles internalized by human cells

    KAUST Repository

    Ferraro, Daniela

    2017-01-09

    CeO2 nanoparticles (CNPs) have been investigated as promising antioxidant agents with significant activity in the therapy of diseases involving free radicals or oxidative stress. However, the exact mechanism responsible for CNP activity has not been completely elucidated. In particular, in situ evidence of modification of the oxidative state of CNPs in human cells and their evolution during cell internalization and subsequent intracellular distribution has never been presented. In this study we investigated modification of the Ce(iii)/Ce(iv) ratio following internalization in human cells by X-ray absorption near edge spectroscopy (XANES). From this analysis on cell pellets, we observed that CNPs incubated for 24 h showed a significant increase in Ce(iii). By coupling on individual cells synchrotron micro-X-ray fluorescence (μXRF) with micro-XANES (μXANES) we demonstrated that the Ce(iii)/Ce(iv) ratio is also dependent on CNP intracellular localization. The regions with the highest CNP concentrations, suggested to be endolysosomes by transmission electron microscopy, were characterized by Ce atoms in the Ce(iv) oxidation state, while a higher Ce(iii) content was observed in regions surrounding these areas. These observations suggest that the interaction of CNPs with cells involves a complex mechanism in which different cellular areas play different roles.

  2. JGOFS IV - a long-time study of the variability of the flow of particles in the North-Atlantic Ocean. Quantification of the formation, transformation and sedimentation of biogenic particles. Final report; JGOFS IV - Langzeitstudie zur Variabilitaet des Partikelflusses im Nordatlantik. Quantifizierung der Bildung, Umsetzung und Sedimentation biogener Partikel. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Koeve, W.; Wanniek, J.; Fehner, U.; Zeitzschel, B.

    2000-07-01

    The project investigated central processes of the carbon cycle, and especially the carbon cycle balance in the North Atlantic Ocean. During the field phase (JGOFS I-III), two complementary programme components were carried out: Pelagial programme: SEasonally resolved studies of particle formation, modification and transport processes in the epipelagial; In-depth programme: Regional studies on the volume and composition of biogenic particles exported from the ocean in the mixed conditions of the winter season. (WML export). [German] Ziel der Arbeiten ist es, das Verstaendnis zentraler Prozesse des Kohlenstoffkreislaufes im Nordostatlantik zu verbessern und insbesondere zur Bilanzierung des Kohlenstoffkreislaufes im Nordostatlantik beizutragen. Waehrend der Feldphase (JGOFS I-III) wurden hierzu zwei komplementaere Programmkomponenten durchgefuehrt: - Pelagialprogramm: Saisonal aufloesende Untersuchungen zu Prozessen der Partikelbildung, Modifikation und Transport im Epipelagial. (Prozessstudien, Transekte und Modellarbeiten) - Verankerungsprogramm: Regionale Untersuchungen zum Umfang und zur Zusammensetzung des Exportes biogener Partikel aus der winterlich durchmischten Schicht des Ozeans (WML-Export). (orig.)

  3. The extracellular matrix of Gadus morhua muscle contains types III, V, VI and IV collagens in addition to type I

    DEFF Research Database (Denmark)

    Brüggemann, Dagmar Adeline; Lawson, M.A.

    2005-01-01

    Confocal microscopy and immuno‐histochemistry were used to examine collagens in the extracellular matrix of cod Gadus morhua swimming muscle. In addition to the well known presence of type I fibrous collagen, types III and VI were also found in the myocommata and the endomysium. The beaded collagen......, type VI, was found in the endomysium and the network forming collagen, type IV, was found in the basement membrane. This is the first report of type V collagen in cod muscle and of types II, IV and VI in the muscle of a teleost....

  4. Roles of chemoradio therapy for stage III or IV advanced head and neck cancers

    International Nuclear Information System (INIS)

    Tachikawa, Takuya; Iwai, Hiroshi; Tsuji, Hiroyuki; Minamino, Masayuki; Yamamoto, Takashi; Yukawa, Hisaya; Inoue, Toshiya; Yamashita, Toshio

    2002-01-01

    The effectiveness of chemoradio therapy (CRT), which was performed on 31 patients with advanced head and neck cancers of stage III or IV at Kansai Medical University between September 1999 and December 2000, was examined. The CRT consisted of continuous infusion of 5FU (500 mg/m 2 ) for 120 hours, prior to drip infusion of CDDP (50 mg/m 2 ) for 2 hours and conventional radiotherapy (2 Gy/day, 5 days/w). The 31 patients with these cancers were divided into two groups; a non-operative group (16 patients) and an operative group (15 patients). The patients in the non-operative group (16 patients) and an operative group (15 patients). The patients in the non-operative group underwent CRT (60-70 Gy of total radiation dose and two courses of chemotherapy) without surgery. The patients in the operative group received surgical treatment followed by CRT (40 Gy of total radiation dose and one course of chemotherapy). The results of CRT indicated 87.1% of the response rate (RR), and 29.0% of the complete response rate (CR) in the group. The CR rate was lower than in other reports. However, the combination of CRT and the subsequent operation indicated a disease-free survival rate of 61.3% and reduction of the recurrence rate to 17.4%. Eight of 9 patients of CR after CRT without surgery revealed NED. On the other hand, the results indicated that all 10 patients of PR after CRT showed tumor residue, 9 of 10 patients of PR showed NED after additional surgery. Therefore, it is likely that the patients of CR do not need the additional surgery, however, the patients of PR are strongly recommended the surgery to improve the local control rate as well as survival rate. Although adverse reactions of CRT on patients included mucositis, leucopenia, thrombopenia and dermatitis, the symptoms ranged within grade 3. (author)

  5. SEVERE (GRADE III-IV ACUTE GRAFT VERSUS HOST DISEASE AFTER ALLOGENEIC HAEMATOPOIETIC STEM CELL TRANSPLANTATION

    Directory of Open Access Journals (Sweden)

    Irena Preložnik-Zupan

    2002-09-01

    Full Text Available Background. Beside greater susceptibility to infections, acute graft host disease is a consequence of the activation of donor T-cells against host antigens. Most common target organs are skin, liver and intestinal mucosis.Methods. In the 6-year period between January 1995 and December 2000, 49 patients were treated with allogeneic haematopoietic stem cell transplantation (allo-HSCT in Transplant unit, Department of Hematology, Clinical Centre Ljubljana. The standard GVHD prophylaxis regimen consisted of cyclosporine and short-course methotrexate. Severe, grade III-IV aGVHD with skin and/or gastrointestinal and/or liver involvement appeared in 16 (32% of the 49 patients.Results. Among the 16 patients with severe aGVHD, 14 had liver involvement, ten gastrointestinal and eight skin involvement. One patient had skin involvement only, the rest of them had combined involvement of two or three organ systems. Routine first-line treatment for aGVHD, given to all 16 pts with severe forms of the disease, was methylprednisolone (MP 2mg/ kg. Six patients with predominant skin involvement responded to MP. Other ten patients with mainly liver and gastrointestinal involvement needed second or even third line aGVHD treatment. These were anti-thymocyte globulin (ATG and/or monoclonal antibodies (OKT3 and/or mycophenolate mofetil (MMF and/or FK506 (tacrolimus. Seven patients died of advanced aGVHD and treatment related infection.Conclusions. Based on our experiences, we conclude that in critically ill patients with severe aGVHD, neutropenia and high risk for opportunistic infection, each day of ineffective MP therapy may have fatal consequences. Simultaneous institution of a combination of corticosteroids and a second-line drug might prove more appropriate for patients with a severe form of aGVHD.

  6. Chemotherapy Toxicity On Quality of Life in Older Patients With Stage I, Stage II, Stage III, or Stage IV Ovarian Epithelial, Primary Peritoneal Cavity, or Fallopian Tube Cancer

    Science.gov (United States)

    2017-05-03

    Stage I Ovarian Cancer; Stage IA Fallopian Tube Cancer; Stage IB Fallopian Tube Cancer; Stage IC Fallopian Tube Cancer; Stage II Ovarian Cancer; Stage IIA Fallopian Tube Cancer; Stage IIB Fallopian Tube Cancer; Stage IIC Fallopian Tube Cancer; Stage III Ovarian Cancer; Stage III Primary Peritoneal Cancer; Stage IIIA Fallopian Tube Cancer; Stage IIIB Fallopian Tube Cancer; Stage IIIC Fallopian Tube Cancer; Stage IV Fallopian Tube Cancer; Stage IV Ovarian Cancer; Stage IV Primary Peritoneal Cancer

  7. First principles calculation of material properties of group IV elements and III-V compounds

    Science.gov (United States)

    Malone, Brad Dean

    This thesis presents first principles calculations on the properties of group IV elements and group III-V compounds. It includes investigations into what structure a material is likely to form in, and given that structure, what are its electronic, optical, and lattice dynamical properties as well as what are the properties of defects that might be introduced into the sample. The thesis is divided as follows: • Chapter 1 contains some of the conceptual foundations used in the present work. These involve the major approximations which allow us to approach the problem of systems with huge numbers of interacting electrons and atomic cores. • Then, in Chapter 2, we discuss one of the major limitations to the DFT formalism introduced in Chapter 1, namely its inability to predict the quasiparticle spectra of materials and in particular the band gap of a semiconductor. We introduce a Green's function approach to the electron self-energy Sigma known as the GW approximation and use it to compute the quasiparticle band structures of a number of group IV and III-V semiconductors. • In Chapter 3 we present a first-principles study of a number of high-pressure metastable phases of Si with tetrahedral bonding. The phases studied include all experimentally determined phases that result from decompression from the metallic beta-Sn phase, specifically the BC8 (Si-III), hexagonal diamond (Si-IV), and R8 (Si-XII). In addition to these, we also study the hypothetical ST12 structure found upon decompression from beta-Sn in germanium. • Our attention is then turned to the first principles calculations of optical properties in Chapter 4. The Bethe-Salpeter equation is then solved to obtain the optical spectrum of this material including electron-hole interactions. The calculated optical spectrum is compared with experimental data for other forms of silicon commonly used in photovoltaic devices, namely the cubic, polycrystalline, and amorphous forms. • In Chapter 5 we present

  8. The spectrometer PERKEO III and the decay of free neutrons; Das Spektrometer PERKEO III und der Zerfall des freien Neutrons

    Energy Technology Data Exchange (ETDEWEB)

    Maerkisch, B.M.

    2006-10-18

    The Standard Model of particle physics describes neutron decay with three parameters. In contrast to that, a multitude of observables are accessible experimentally. With precision measurements sensitive tests of the Standard Model are thus possible. The neutron decay spectrometer PERKEO III was designed and built as part of this work. It will replace its predecessor PERKEO II, which has reached its systematical and statistical limits. With the new instrument measurements with continuous and pulsed neutron beams become feasible. This either provides an increase in statistics of up to two orders of magnitude, or eliminates the two major instrument specific sources of systematical corrections. In our first measurement in winter 2006/2007, the available event rate will be used to determine weak magnetism from the electron asymmetry A. Previously, this value was not statistically accessible in neutron decay. Systematics are analyzed with the help of our measurement with PERKEO II. For this measurement PERKEO III will be installed at the neutron guide H113 at the Institute Laue-Langevin, Grenoble. The neutron beam from this guide is characterized and a model is given, which allows the rapid calculation of beam profiles and absolute event rates from such a beam. In preparation of a future neutron decay instrument the reflective properties of two non-magnetic neutron mirrors were measured. (orig.)

  9. Spectroscopic investigation of complexation of Cm(III) und Eu(III) with partitioning-relevant N-donor ligands

    International Nuclear Information System (INIS)

    Bremer, Antje

    2014-01-01

    The separation of trivalent actinides and lanthanides is an essential part of the development of improved nuclear fuel cycles. Liquid-liquid extraction is an applicable technique to achieve this separation. Due to the chemical similarity and the almost identical ionic radii of trivalent actinides and lanthanides this separation is, however, only feasible with highly selective extracting agents. It has been proven that molecules with soft sulphur or nitrogen donor atoms have a higher affinity for trivalent actinides. In the present work, the complexation of Cm(III) and Eu(III) with N-donor ligands relevant for partitioning has been studied by time-resolved laser fluorescence spectroscopy (TRLFS). This work aims at a better understanding of the molecular reason of the selectivity of these ligands. In this context, enormous effort has been and is still put into detailed investigations on BTP and BTBP ligands, which are the most successful N-donor ligands for the selective extraction of trivalent actinides, to date. Additionally, the complexation and extraction behavior of molecules which are structurally related to these ligands is studied. The ligand C5-BPP (2,6-bis(5-(2,2-dimethylpropyl)-1H-pyrazol-3-yl)pyridine) where the triazine rings of the aromatic backbone of the BTP ligands have been replaced by pyrazole rings is one of these molecules. Laser fluorescence spectroscopic investigation of the complexation of Cm(III) with this ligand revealed stepwise formation of three (Cm(C5-BPP) n ) 3+ complexes (n = 1 - 3). The stability constant of the 1:3 complex was determined (log β 3 = 14.8 ± 0.4). Extraction experiments have shown that, in contrast to BTP and BTBP ligands, C5-BPP needs an additional lipophilic anion source such as a 2-bromocarboxylic acid to selectively extract trivalent actinides from nitric acid solutions. The comparison of the stability constant of the (Cm(C5-BPP) 3 ) 3+ complex with the stability constant of the (Cm(nPr-BTP) 3 ) 3+ complex

  10. Palliative treatment with radiation-emitting metallic stents in unresectable Bismuth type III or IV hilar cholangiocarcinoma.

    Science.gov (United States)

    Lu, Jian; Guo, Jin-He; Zhu, Hai-Dong; Zhu, Guang-Yu; Wang, Yong; Zhang, Qi; Chen, Li; Wang, Chao; Pan, Tian-Fan; Teng, Gao-Jun

    2017-01-01

    The emerging data for stenting in combination with brachytherapy in unresectable hilar cholangiocarcinoma are encouraging. The aim of this study was to evaluate the efficacy and safety of radiation-emitting metallic stents (REMS) for unresectable Bismuth type III or IV hilar cholangiocarcinoma. Consecutive patients who underwent percutaneous placement with REMS or uncovered self-expandable metallic stent (SEMS) for unresectable Bismuth type III or IV hilar cholangiocarcinoma between September 2011 and April 2016 were identified into this retrospective study. Data on patient demographics and overall survival, functional success, stent patency and complications were collected at the authors' hospital. A total of 59 patients were included: 33 (55.9%) in the REMS group and 26 (44.1%) in the SEMS group. The median overall survival was 338 days in the REMS group and 141 days in the SEMS group (philar cholangiocarcinoma, and seems to prolong survival as well as patency of stent in these patients.

  11. Significance of measurement of serum fibrosis markers (HA, LN, P III P, IV C) in patients with pulmonary tuberculosis

    International Nuclear Information System (INIS)

    Zhou Mingxian

    2006-01-01

    Objective: To study the clinical significance of determination of serum fibrosis markers in patients with pulmonary tuberculosis. Methods: Serum hyaluronic acid (HA), laminin (LN), procollagen III peptide (P III P) and Type IV collagen (IV C) contents were determined with RIA in 128 patients with pulmonary tuberculosis both before and after treatment as well as in 40 controls. Results: Before treatment, the serum contents of the four markers in the patients were significantly higher than those in the controls (P 0.05). Decreases of the levels in treatment failures were not significant and the levels remained significantly higher than those in controls (P<0.01 or P<0.05). Conclusion: Determination of serum fibrosis markers levels in patients with pulmonary tuberculosis is valuable for early diagnosis as well as for evaluation of the effect of chemotherapy. (authors)

  12. Facing Contrast-Enhancing Gliomas: Perfusion MRI in Grade III and Grade IV Gliomas according to Tumor Area

    Directory of Open Access Journals (Sweden)

    Anna Luisa Di Stefano

    2014-01-01

    Full Text Available Tumoral neoangiogenesis characterizes high grade gliomas. Relative Cerebral Blood Volume (rCBV, calculated with Dynamic Susceptibility Contrast (DSC Perfusion-Weighted Imaging (PWI, allows for the estimation of vascular density over the tumor bed. The aim of the study was to characterize putative tumoral neoangiogenesis via the study of maximal rCBV with a Region of Interest (ROI approach in three tumor areas—the contrast-enhancing area, the nonenhancing tumor, and the high perfusion area on CBV map—in patients affected by contrast-enhancing glioma (grades III and IV. Twenty-one patients were included: 15 were affected by grade IV and 6 by grade III glioma. Maximal rCBV values for each patient were averaged according to glioma grade. Although rCBV from contrast-enhancement and from nonenhancing tumor areas was higher in grade IV glioma than in grade III (5.58 and 2.68; 3.01 and 2.2, resp., the differences were not significant. Instead, rCBV recorded in the high perfusion area on CBV map, independently of tumor compartment, was significantly higher in grade IV glioma than in grade III (7.51 versus 3.78, P=0.036. In conclusion, neoangiogenesis encompasses different tumor compartments and CBV maps appear capable of best characterizing the degree of neovascularization. Facing contrast-enhancing brain tumors, areas of high perfusion on CBV maps should be considered as the reference areas to be targeted for glioma grading.

  13. Annotated bibliography for liquid metal surface tensions of groups III-A, IV-A, and V-A metals

    International Nuclear Information System (INIS)

    Murtha, M.J.; Burnet, G.

    1976-04-01

    An annotated bibliography has been prepared which includes summaries of 82 publications dating from 1920 and dealing with the measurement of the surface tensions of Groups III-A, IV-A, and V-A metals in the liquid state. The bibliography is organized by key element investigated, and contains a tabulation of correlations for surface tension as a function of temperature. A brief discussion dealing with variables and methods has been included

  14. Directed synthesis of crystalline plutonium (III) and (IV) oxalates: accessing redox-controlled separations in acidic solutions

    International Nuclear Information System (INIS)

    Runde, Wolfgang; Brodnax, Lia F.; Goff, George S.; Bean, Amanda C.; Scott, Brian L.

    2009-01-01

    Both binary and ternary solid complexes of Pu(III) and Pu(IV) oxalates have been previously reported in the literature. However, uncertainties regarding the coordination chemistry and the extent of hydration of some compounds remain mainly because of the absence of any crystallographic characterization. Single crystals of hydrated oxalates of Pu(III), Pu 2 (C 2 O 4 ) 3 (H 2 O) 6 ·3H 2 O (I) and Pu(IV), KPu(C 2 O 4 ) 2 (OH)·2.5H 2 O (II), were synthesized under moderate hydrothermal conditions and characterized by single crystal X-ray diffraction studies. Compounds I and II are the first plutonium(III) or (IV) oxalate compounds to be structurally characterized via single crystal X-ray diffraction studies. Crystallographic data for I: monoclinic, space group P21/c, a = 11.246(3) A, b = 9.610(3) A, c = 10.315(3) A, Z = 4 and II: monoclinic, space group C2/c, a = 23.234(14) A, b = 7.502(4) A, c = 13.029(7) A, Z = 8.

  15. Adsorption and transformation of selected human-used macrolide antibacterial agents with iron(III) and manganese(IV) oxides

    Energy Technology Data Exchange (ETDEWEB)

    Feitosa-Felizzola, Juliana [Laboratoire Chimie Provence, Aix-Marseille Universites-CNRS (UMR 6264), 3 place Victor Hugo, 13331 Marseille Cedex 3 (France); Hanna, Khalil [Laboratoire de Chimie Physique et Microbiologie pour l' Environnement, CNRS-Universite Henri Poincare-Nancy 1 (UMR 7564), 405 rue de Vandoeuvre, 54600 Villers-les-Nancy (France); Chiron, Serge [Laboratoire Chimie Provence, Aix-Marseille Universites-CNRS (UMR 6264), 3 place Victor Hugo, 13331 Marseille Cedex 3 (France)], E-mail: serge.chiron@univ-provence.fr

    2009-04-15

    The adsorption/transformation of two members (clarithromycin and roxithromycin) of the macrolide (ML) antibacterial agents on the surface of three environmental subsurface sorbents (clay, iron(III) and manganese(IV) oxy-hydroxides) was investigated. The adsorption fitted well to the Freundlich model with a high sorption capacity. Adsorption probably occurred through a surface complexation mechanism and was accompanied by slow degradation of the selected MLs. Transformation proceeded through two parallel pathways: a major pathway was the hydrolysis of the cladinose sugar, and to a lesser extent the hydrolysis of the lactone ring. A minor pathway was the N-dealkylation of the amino sugar. This study indicates that Fe(III) and Mn(IV) oxy-hydroxides in aquatic sediments may play an important role in the natural attenuation of MLs. Such an attenuation route yields a range of intermediates that might retain some of their biological activity. - Iron(III) and manganese(IV) oxy-hydroxides in aquatic sediments may play an important role in the natural attenuation of macrolide antibacterial agents.

  16. Adsorption and transformation of selected human-used macrolide antibacterial agents with iron(III) and manganese(IV) oxides

    International Nuclear Information System (INIS)

    Feitosa-Felizzola, Juliana; Hanna, Khalil; Chiron, Serge

    2009-01-01

    The adsorption/transformation of two members (clarithromycin and roxithromycin) of the macrolide (ML) antibacterial agents on the surface of three environmental subsurface sorbents (clay, iron(III) and manganese(IV) oxy-hydroxides) was investigated. The adsorption fitted well to the Freundlich model with a high sorption capacity. Adsorption probably occurred through a surface complexation mechanism and was accompanied by slow degradation of the selected MLs. Transformation proceeded through two parallel pathways: a major pathway was the hydrolysis of the cladinose sugar, and to a lesser extent the hydrolysis of the lactone ring. A minor pathway was the N-dealkylation of the amino sugar. This study indicates that Fe(III) and Mn(IV) oxy-hydroxides in aquatic sediments may play an important role in the natural attenuation of MLs. Such an attenuation route yields a range of intermediates that might retain some of their biological activity. - Iron(III) and manganese(IV) oxy-hydroxides in aquatic sediments may play an important role in the natural attenuation of macrolide antibacterial agents

  17. Structural features and electronic properties of group-III-, group-IV-, and group-V-doped Si nanocrystallites

    International Nuclear Information System (INIS)

    Ramos, L E; Degoli, Elena; Cantele, G; Ossicini, Stefano; Ninno, D; Furthmueller, J; Bechstedt, F

    2007-01-01

    We investigate the incorporation of group-III (B and Al), group-IV (C and Ge), and group-V (N and P) impurities in Si nanocrystallites. The structural features and electronic properties of doped Si nanocrystallites, which are faceted or spherical-like, are studied by means of an ab initio pseudopotential method including spin polarization. Jahn-Teller distortions occur in the neighborhood of the impurity sites and the bond lengths show a dependence on size and shape of the nanocrystallites. We find that the acceptor (group-III) and donor (group-V) levels become deep as the nanocrystallites become small. The energy difference between the spin-up and spin-down levels of group-III and group-V impurities decreases as the size of the Si nanocrystallite increases and tends to the value calculated for Si bulk. Doping with carbon introduces an impurity-related level in the energy gap of the Si nanocrystallites

  18. Complexation of some trivalent lanthanides, scandium(III) and thorium(IV) by benzylidenepyruvates in aqueous solution

    International Nuclear Information System (INIS)

    Marques, R.N.; Moraes, M. de; Ionashiro, M.

    1997-01-01

    The protonation constants of 4-methylbenzylidenepyruvate (4Me-BP) and 4-isopropylbenzylidenepyruvate (4IP-BP) as well as the stability constants of their binary 1:1 complexes with Cu(II), La(III), Pr(III), Sm(III), Eu(III), Yb(III), Sc(III) and Th(IV) have been determined spectrophotometrically in aqueous solution at 25 C and ionic strength 0.500 M, maintained with sodium perchlorate. For all metal ions considered, the stability changes move in the same direction as the pK a of the ligands. Linear free energy relationships, as applied to oxygen donor substances, suggest the -COCOO - moiety as the metal binding site of the ligands. The results are discussed mainly taking into account that benzylidenepyruvates, besides the α-keto canonical form, may display other forms in aqueous solution with changing pH and the possible occurrence of extra intra-ligand charge polarization, induced by metal ions. (orig.)

  19. Docetaxel, cisplatin and 5-fluorouracil induction chemotherapy followed by chemoradiotherapy or chemoradiotherapy alone in stage III-IV unresectable head and neck cancer. Results of a randomized phase II study

    Energy Technology Data Exchange (ETDEWEB)

    Takacsi-Nagy, Zoltan; Polgar, Csaba; Major, Tibor; Fodor, Janos [National Institute of Oncology, Center of Radiotherapy, Budapest (Hungary); Hitre, Erika [National Institute of Oncology, Department of Chemotherapy and Clinical Pharmacology, Budapest (Hungary); Remenar, Eva; Kasler, Miklos [National Institute of Oncology, Department of Head and Neck and Maxillofacial Surgery, Budapest (Hungary); Oberna, Ferenc [Bacs-Kiskun County Hospital, Department of Oral, Maxillofacial and Head and Neck Surgery, Kecskemet (Hungary); Goedeny, Maria [National Institute of Oncology, Department of Radiology, Budapest (Hungary)

    2015-08-15

    adequate patient selection if ICT is considered. (orig.) [German] Simultane Chemoradiotherapie (CRT) ist eine Standardtherapie beim fortgeschrittenen Plattenepithelkarzinom im Kopf-Hals-Bereich. In dieser randomisierten Phase-II-Studie wurden die Wirksamkeit und Toxizitaet einer Induktionschemotherapie (ICT) mit Docetaxel, Cisplatin und 5-Fluorouracil gefolgt von simultaner CRT mit der CRT allein bei Patienten mit lokal fortgeschrittenen, irresektablen Kopf-Hals-Tumoren verglichen. Zwischen Januar 2007 und Juni 2009 wurden 66 Patienten mit fortgeschrittenem (Stadium III oder IV), inoperablem Plattenepithelkarzinom im Kopf-Hals-Bereich (Mundhoehle, Oropharynx, Hypopharynx, Larynx) nach dem Zufallsprinzip in 2 Gruppen eingeteilt. Die eine Gruppe erhielt 2 Zyklen der Docetaxel-, Cisplatin- und 5-Fluorouracil-ICT gefolgt von CRT mit 3 Zyklen Cisplatin, die andere Gruppe erhielt nur CRT. Ansprechrate, lokale Tumorkontrolle (LTC), lokoregionale Tumorkontrolle (LRTC), Gesamtueberleben (OS), progressionsfreies Ueberleben (PFS) und toxischer Effekt wurden verglichen. Drei Patienten der Gruppe mit ICT + CRT erschienen bei der ersten Behandlung nicht, so dass insgesamt 63 Patienten in der Studie ausgewertet wurden (30 in der Gruppe ICT + CRT, 33 in der CRT-Gruppe). Drei Patienten starben an febriler Neutropenie nach ICT. Die mediane Nachbeobachtungszeit der ueberlebenden Patienten betrug 63 Monate (Spanne 53-82 Monate). Die Rate des radiologischen vollstaendigen Ansprechens war 63 % nach ICT + CRT vs. 70 % nach CRT allein. Es gab keinen signifikanten Unterschied in der 3-Jahres-Rate bei LTC (56 vs. 57 %), LRTC (42 vs. 50 %), OS (43 vs. 55 %) und PFS (41 vs. 50 %) zwischen der Gruppe mit ICT + CRT und den mit CRT behandelten Patienten. Die Rate von Neutropenie mit einem Grad 3-4 lag in der Gruppe mit ICT + CRT deutlich hoeher als in der CRT-Gruppe (37 und 12 %; p = 0,024). Spaete Toxizitaet (Grad-2- und Grad-3-Xerostomie) ereignete sich in der Gruppe mit ICT + CRT und in der CRT

  20. Growth and characterization of manganese doped III-V heterostructures; Herstellung und Charakterisierung von Mangan dotierten III-V Halbleiterheterostrukturen

    Energy Technology Data Exchange (ETDEWEB)

    Wurstbauer, Ursula

    2008-04-15

    Subject of this thesis is the growth of III-V heterostructures doped with manganese by means of molecular beam epitaxy (MBE). The characterization was done primarily by magnetotransport measurements in the temperature range from 300 K to 20 mK and fields up to 19 T. Two different kind of Mn doped materials, ferromagnetic GaMnAs layers and Mn modulation doped magnetic two dimensional hole systems were studied. The first part focuses on the enhancement of the electric and magnetic properties of ferromagnetic properties and the integration of GaMnAs layers in more sophisticated heterostructures. Therefore, the crystal quality and the influence of the buffer layer beneath the magnetic layer are crucial. The MBE-growth of ferromagnetic GaMnAs layers on (001), (311)A and (311)A was successfully achieved with present values of the Curie-temperature (TC). Additionally, the growth of ferromagnetic GaMnAs layers on nonpolar (110) substrates and on cleaved [110] edges was established. An application of the latter was the investigation of magnetic bipolar junctions. Magnetic two dimensional hole gases (M2DHG) has been realized by the use of In0.75Al0.25As/In0.75Ga0.25As/InAs quantum well (QW) structures. It is necessary to grow a buffer layer for strain relaxation due to the lattice mismatch by gradually increasing the In mole fraction. Magnetotransport measurements were carried out on Si doped two-dimensional electron gases (2DEG) and on Mn doped M2DHGs. From magnetotransport measurements on the M2DHGs we see some interesting features, in particular in the mK region. From the 2DEGs and all non inverted doped M2DEGs weak localization and weak antilocalization effects can be observed in the low field region. Whereas all M2DHGs with an inverted doping layer show strong localization effects and a metal insulator transition dependent on the applied magnetic field perpendicular to the QW. In the high field region Shubnikov-de-Haas oscillations in the longitudinal resistance and

  1. Reactivity of the uranium (U(IV)/U(VI)) and the plutonium (Pu(III)/Pu(IV)) in nitric aqueous solution under ultrasound

    International Nuclear Information System (INIS)

    Venault, L.

    1998-01-01

    To minimize the volumes of solid waste and industrial effluents generated at the end of cycle, particularly in the spent nuclear fuel reprocessing industry, research is currently under way on so-called innovative processes, designed to induce chemical reactions without adding reagent to the media. Among these processes, the use of ultrasound can prove advantageous, and the purpose of this study is to assess accurately the potential for its application. In the present context, this work shows that the transmission of an ultrasonic wave in aqueous nitric acid solution leads to: the accumulation of nitrous acid in solution, until a steady-sate concentration is reached; the removal of nitrogen monoxide and nitrogen dioxide in the gas stream. The initial kinetics of the formation of HNO 2 in solution was quantified as a function of the nitric acid concentration and the ultrasound intensity. It was also shown than an excess of nitrous acid in nitric solution decomposes under the effect of ultrasound. It is also possible to accumulate hydrogen peroxide in solution during the ultrasonic irradiation of aqueous nitric acid solutions in the presence of a chemical species N 2 H 5 + , NH 2 SO 3 H...) which reacts rapidly with HNO 2 , preventing the reduction of H 2 O 2 by HNO 2 . The mechanisms of HNO 2 formation and decomposition, and the mechanism of H 2 O 2 formation during the ultrasonic irradiation of aqueous nitric acid solutions, are presented. Control of H 2 O 2 or HNO 2 in a nitric acid medium under the effect of an ultrasonic wave can be exploited to control redox reactions of uranium and plutonium ions, particularly with respect to the oxidation of U and Pu (U(IV)→ U(IV) or Pu(III) → Pu(IV)) and the reduction of Pu (Pu(IV)→ Pu(III). The redox behavior of uranium and plutonium ions in aqueous nitric solution subject to an ultrasonic flux is interpreted in term of effects induced on the reaction medium, and reveals the potential for using ultrasound to cause

  2. 31. III - 3. IV toimub Helsingis ja Tallinnas rahvusvaheline kunstihoonete konverents "Concrete Visions"

    Index Scriptorium Estoniae

    2004-01-01

    Konverentsi eesmärgist, osalejatest. 3. IV avatud paneeldiskussioonil arutletakse Tallinna Kunstihoones kunstihoone kui institutsiooni rolli ja näituste korraldamise ning Viinistu kunstimuuseumis kunstihoonete koostöö üle

  3. Studies on the complexes of uranium(IV), thorium(IV) and lanthanum(III) acetates with p-aminobenzoic acid, m-aminobenzoic acid, benzilic acid and phthalic acid

    International Nuclear Information System (INIS)

    Singh, Mangal; Singh, Ajaib

    1979-01-01

    Complexes of acetates of U(IV), Th(IV) and La(III) with the ligands p-aminobenzoic acid, m-aminobenzoic acid, benzilic acid and phthalic acid have been prepared. Colour and chemical analytical data are recorded. They are characterised on the basis of IR and reflectance spectra and magnetic susceptibility data. (M.G.B.)

  4. Bone radioisotope scanning: usefulness in the evaluation and observation of patients with breast cancer in clinical stage II, III, IV; Gammagrafia osea: utilidad en la evaluacion y seguimiento de pacientes con cancer de mama en estadio clinico II, III, IV

    Energy Technology Data Exchange (ETDEWEB)

    Cano P, R A

    1996-12-31

    The clinical records of 420 patients with diagnosis of breast cancer well documented by the pathological anatomy in clinical stage II, III and IV were reviewed. In each one of them has been done at least a bone scanning during the diagnosis. In 52 cases carried out sericeous dosages of CA 15-3 and in some cases it was necessary to administer Samarium-153 EDTMP as palliative therapy of bone pain. The presence of secondary gamma-graphic focuses was 0/84 cases (0%) in clinical stage II, 54/265 cases (20%) in III and 41/91 cases (45%) in IV. The one focus appeared in 6.7% of the cases. In 7 of the 52 cases that received sericeous dosages of CA 15-3 were detected secondary osseous lesions, and 5 of them presented a marker elevation. The bone scanning has shown in many cases the presence of getters focuses in singular places of skeleton, urinary excretory system or mammary tissue. The gamma rays from Sm-153 allowed us to get some appropriate basal views post-therapy of the secondary lesions. The results show that the great incidence of secondary lesions in the skeleton occurred in cases of stages III and IV unlike other countries. The serial repetition of the radioisotope scanning. The presence of one focus in the skeleton of a patient with a well-known neoplasia makes us to do a careful evaluation of the focus nature. The presence of tracer accumulation in the kidney, ureter and bladder allows us to infer the pathology of excretory system that is the first evidence of its presence in many cases. (author). 71 refs., 7 figs., 6 tabs.

  5. Potentiometric Sensor for Gadolinium(III Ion Based on Zirconium(IV Tungstophosphate as an Electroactive Material

    Directory of Open Access Journals (Sweden)

    Harish K. Sharma

    2009-01-01

    Full Text Available A new inorganic ion exchanger has been synthesized namely Zirconium(IV tungstophosphate [ZrWP]. The synthesized exchanger was characterized using ion exchange capacity and distribution coefficient (Kd. For further studies, exchanger with 0.35 meq/g ion-exchange capacity was selected. Electrochemical studies were carried out on the ion exchange membranes using epoxy resin as a binder. In case of ZrWP, the membrane having the composition; Zirconium(IV tugstophosphate (40% and epoxy resin (60% exhibits best performance. The membrane works well over a wide range of concentration from 1×10-5 to 1×10-1 M of Gd(III ion with an over- Nernstian slope of 30 mv/ decade. The response time of the sensor is 15 seconds. For this membrane, effect of internal solution has been studied and the electrode was successfully used in partially non-aqueous media too. Fixed interference method and matched potential method has been used for determining selectivity coefficient with respect to alkali, alkaline earth, some transition and rare earth metal ions that are normally present along with Gd(III in its ores. The electrode can be used in the pH range 4.0-10.0 for 10-1 M and 3.0-7.0 for 10-2 M concentration of target ion. These sensors have been used as indicator electrodes in the potentiometric titration of Gd(III ion against EDTA and oxalic acid.

  6. Biodegradation of pharmaceuticals and endocrine disruptors with oxygen, nitrate, manganese (IV), iron (III) and sulfate as electron acceptors

    Science.gov (United States)

    Schmidt, Natalie; Page, Declan; Tiehm, Andreas

    2017-08-01

    Biodegradation of pharmaceuticals and endocrine disrupting compounds was examined in long term batch experiments for a period of two and a half years to obtain more insight into the effects of redox conditions. A mix including lipid lowering agents (e.g. clofibric acid, gemfibrozil), analgesics (e.g. diclofenac, naproxen), beta blockers (e.g. atenolol, propranolol), X-ray contrast media (e.g. diatrizoic acid, iomeprol) as well as the antiepileptic carbamazepine and endocrine disruptors (e.g. bisphenol A, 17α-ethinylestradiol) was analyzed in batch tests in the presence of oxygen, nitrate, manganese (IV), iron (III), and sulfate. Out of the 23 selected substances, 14 showed a degradation of > 50% of their initial concentrations under aerobic conditions. The beta blockers propranolol and atenolol and the analgesics pentoxifylline and naproxen showed a removal of > 50% under anaerobic conditions. In particular naproxen proved to be degradable with oxygen and under most anaerobic conditions, i.e. with manganese (IV), iron (III), or sulfate. The natural estrogens estriol, estrone and 17β-estradiol showed complete biodegradation under aerobic and nitrate-reducing conditions, with a temporary increase of estrone during transformation of estriol and 17β-estradiol. Transformation of 17β-estradiol under Fe(III)-reducing conditions resulted in an increase of estriol as well. Concentrations of clofibric acid, carbamazepine, iopamidol and diatrizoic acid, known for their recalcitrance in the environment, remained unchanged.

  7. Anti-SEMA4D Monoclonal Antibody VX15/2503 With Nivolumab or Ipilimumab in Treating Patients With Stage III or IV Melanoma

    Science.gov (United States)

    2018-04-26

    Metastatic Melanoma; Stage III Cutaneous Melanoma AJCC v7; Stage IIIA Cutaneous Melanoma AJCC v7; Stage IIIB Cutaneous Melanoma AJCC v7; Stage IIIC Cutaneous Melanoma AJCC v7; Stage IV Cutaneous Melanoma AJCC v6 and v7

  8. [Clinical value of "Kou mode of hepatic hilar anastomosis" in resection of type III or IV hepatic hilar cholangiocarcinoma].

    Science.gov (United States)

    He, Xiao-dong; Liu, Wei; Tao, Lian-yuan; Zhang, Zhen-huan; Cai, Lei; Zhang, Shuang-min

    2009-08-01

    To evaluate the surgical technique of "Kou mode of hepatic hilar anastomosis" in the treatment for type III or IV hilar cholangiocarcinoma. The clinical data of 89 patients with type III or IV hilar cholangiocarcinoma surgically treated in our department between Jan. 1990 and Jan. 2008 were retrospectively analyzed. Since January 2000, "Kou mode of hepatic hilar anastomosis" was performed for some patients with advanced hilar cholangiocarcinoma. The patients were divided into two groups: group A treated between 1990 and 1999, group B between 2000 and 2008. The rate of resection, therapeutic efficacy and complications in these two groups were compared, respectively. Of the 37 cases with hilar cholangiocarcinoma in group A, 4 were surgically treated (10.8%), with 1 (2.7%) radical resection and 3 (8.1%) palliative resection. Among the 52 cases with hilar cholangiocarcinoma in the group B, 35 (67.3%) received surgical resection, of them 15 (28.8%) underwent radical resection and 20 (38.5%) had palliative resection. Twenty-eight of these 35 cases underwent the "Kou mode of hepatic hilar anastomosis". The resection rate of advanced hilar cholangiocarcinoma in the group B was significantly higher than that in group A (P anastomosis" developed bile leakage to a varying degree and recovered after drainage and symptomatic treatment. The resection rate of type III or IV advanced hilar cholangiocarcinoma can be remarkably improved by using a novel alternative surgical technique called "Kou mode of hepatic hilar anastomosis". However, the long-term outcome still needs to be determined by close follow-up and further observation.

  9. Superselective intra-arterial infusion chemotherapy for stage III/IV squamous cell carcinomas of the oral cavity: Midterm results

    International Nuclear Information System (INIS)

    Ikushima, I.; Korogi, Y.; Ishii, A.; Hirai, T.; Yamura, M.; Nishimura, R.; Baba, Y.; Yamashita, Y.; Shinohara, M.

    2008-01-01

    Purpose: We performed superselective intra-arterial infusion chemotherapy (SIC) according to a protocol in which drug distribution is evaluated by the use of interventional radiology (IVR)-computed tomography (CT) system, and the chemotherapy is combined with medium-dose conformal radiation therapy (CRT). We analyzed retrospectively the factors that affect the midterm survival ratio, including local response, for stage III and IV squamous cell carcinomas of the oral cavity. Materials and methods: Forty consecutive patients with stage III and IV squamous cell carcinomas of the oral cavity and who had undergone both SIC and CRT were enrolled. A microcatheter was placed in the appropriate feeding artery of the tumor and cisplatin (50 mg/body) was infused twice. CRT was administered with a dual-energy (4 and 10 MV) linear accelerator. The total and daily doses delivered were 30 and 2.0 Gy, respectively. Histopathologic effects were classified into five grades: grade 0 or 1 was defined as a poor response, and grade II or higher as a good response. Age, sex, stage, local response to treatment, mode of invasion and lymph node metastasis were analyzed, and differences in the midterm survival ratio were assessed. Results: The 3-year survival ratio of the 40 cases was 67%. A good local response (III or IV) was achieved in 75% of the cases. The survival ratio of the good local response group was significantly better than that of the poor response group (p = 0.04). Mode of invasion (p = 0.03) and lymph node metastasis (p = 0.01) were also predictive of survival. In the multivariable analysis of survival, however, no variables including good local response (p = 0.12), were predictive. Conslusion: Our new protocol improved local response, but it did not contribute to the survival ratio

  10. Bone radioisotope scanning: usefulness in the evaluation and observation of patients with breast cancer in clinical stage II, III, IV

    International Nuclear Information System (INIS)

    Cano P, R.A.

    1995-01-01

    The clinical records of 420 patients with diagnosis of breast cancer well documented by the pathological anatomy in clinical stage II, III and IV were reviewed. In each one of them has been done at least a bone scanning during the diagnosis. In 52 cases carried out sericeous dosages of CA 15-3 and in some cases it was necessary to administer Samarium-153 EDTMP as palliative therapy of bone pain. The presence of secondary gamma-graphic focuses was 0/84 cases (0%) in clinical stage II, 54/265 cases (20%) in III and 41/91 cases (45%) in IV. The one focus appeared in 6.7% of the cases. In 7 of the 52 cases that received sericeous dosages of CA 15-3 were detected secondary osseous lesions, and 5 of them presented a marker elevation. The bone scanning has shown in many cases the presence of getters focuses in singular places of skeleton, urinary excretory system or mammary tissue. The gamma rays from Sm-153 allowed us to get some appropriate basal views post-therapy of the secondary lesions. The results show that the great incidence of secondary lesions in the skeleton occurred in cases of stages III and IV unlike other countries. The serial repetition of the radioisotope scanning. The presence of one focus in the skeleton of a patient with a well-known neoplasia makes us to do a careful evaluation of the focus nature. The presence of tracer accumulation in the kidney, ureter and bladder allows us to infer the pathology of excretory system that is the first evidence of its presence in many cases. (author). 71 refs., 7 figs., 6 tabs

  11. Hopf and Bautin Bifurcation in a Tritrophic Food Chain Model with Holling Functional Response Types III and IV

    Science.gov (United States)

    Castellanos, Víctor; Castillo-Santos, Francisco Eduardo; Dela-Rosa, Miguel Angel; Loreto-Hernández, Iván

    In this paper, we analyze the Hopf and Bautin bifurcation of a given system of differential equations, corresponding to a tritrophic food chain model with Holling functional response types III and IV for the predator and superpredator, respectively. We distinguish two cases, when the prey has linear or logistic growth. In both cases we guarantee the existence of a limit cycle bifurcating from an equilibrium point in the positive octant of ℝ3. In order to do so, for the Hopf bifurcation we compute explicitly the first Lyapunov coefficient, the transversality Hopf condition, and for the Bautin bifurcation we also compute the second Lyapunov coefficient and verify the regularity conditions.

  12. (NH4)[V1-xIIIVxIV(AsO4)F1-xOx]: A new mixed valence vanadium(III,IV) fluoro-arsenate with ferromagnetic interactions and electronic conductivity

    International Nuclear Information System (INIS)

    Berrocal, Teresa; Mesa, Jose L.; Pizarro, Jose L.; Bazan, Begona; Ruiz de Larramendi, Idoia; Arriortua, Maria I.; Rojo, Teofilo

    2009-01-01

    A new mixed valence vanadium(III,IV) fluoro-arsenate compound, with formula (NH 4 )[V 1-x III V x IV (AsO 4 )F 1-x O x ] and KTP structure-type, has been synthesized by mild hydrothermal techniques. The crystal structure has been solved from single crystal X-ray diffraction data in the Pna2 1 orthorhombic space group. The unit-cell parameters are a=13.196(2) A, b=6.628(1) A and c=10.7379(7) A with Z=8. The final R factors were R1=0.0438 and wR2=0.0943 [all data]. The crystal structure consists of a three-dimensional framework formed by (V III,IV O 4 F 2 ) octahedra and (AsO 4 ) 3- tetrahedra arsenate oxoanions. The vanadium(III,IV) cations, from the (V III,IV O 4 F 2 ) octahedra, are linked through the fluorine atoms giving rise to zigzag chains. The ammonium cations are located in the cavities of the structure compensating the anionic charge of the [V 1-x III V x IV (AsO 4 )F 1-x O x ] - inorganic skeleton. The thermal stability limit of the phase is 345 deg. C, around to this temperature the ammonium cation and fluoride anion are lost. The IR spectrum shows the characteristic bands of the (NH 4 ) + and (AsO 4 ) 3- ions. Magnetic measurements indicate the existence of weak ferromagnetic interactions. Electronic conductivity, via a hopping mechanism, occurs with an activation energy of 0.66 eV. - Graphical abstract: Polyhedral view of the crystal structure of (NH 4 )[V III 1-x V IV x (AsO 4 )F 1-x O x

  13. Fosaprepitant Dimeglumine, Palonosetron Hydrochloride, and Dexamethasone in Preventing Nausea and Vomiting Caused by Cisplatin in Patients With Stage III or Stage IV Head and Neck Cancer Undergoing Chemotherapy and Radiation Therapy

    Science.gov (United States)

    2017-04-13

    Nausea and Vomiting; Stage III Squamous Cell Carcinoma of the Hypopharynx; Stage III Squamous Cell Carcinoma of the Larynx; Stage III Squamous Cell Carcinoma of the Lip and Oral Cavity; Stage III Squamous Cell Carcinoma of the Nasopharynx; Stage III Squamous Cell Carcinoma of the Oropharynx; Stage IV Squamous Cell Carcinoma of the Hypopharynx; Stage IV Squamous Cell Carcinoma of the Larynx; Stage IV Squamous Cell Carcinoma of the Lip and Oral Cavity; Stage IV Squamous Cell Carcinoma of the Nasopharynx; Stage IV Squamous Cell Carcinoma of the Oropharynx

  14. Effect of HCl Concentration on the Oxidation of LIX 63 and the Subsequent Separation of Pd(II), Pt(IV), Ir(IV) and Rh(III) by Solvent Extraction

    Energy Technology Data Exchange (ETDEWEB)

    Nguyen, Thi Hong; Lee, Man Seung [Mokpo National University, Jeollanamdo (Korea, Republic of)

    2016-10-15

    During the selective extraction of Pd(II) by LIX 63 from 6 M HCl solutions containing platinum group metals, an oxidation-reduction reaction occurs between the LIX 63 and Ir(IV). Since the reduced Ir(III) cannot be extracted by solvating and amine extractants, the oxidation-reduction reaction has a significant effect on the separation of Pt(IV), Ir(IV) and Rh(III). Therefore, the effect of HCl concentration on the reduction of Ir(IV) during the extraction with LIX 63 was investigated at 3 and 6 M HCl solutions. The extraction behavior of Iridium by Aliquat 336 from the Pd(II) free raffinate showed that the percentage of iridium extraction rapidly decreased when HCl concentration was increased from 3 to 6 M, indicating that more Ir(IV) was reduced to Ir(III). Extraction schemes for the separation of Pt(IV), iridium and Rh(III) by Aliquat 336 from 3 and 6 M HCl solutions were investigated.

  15. Image-guided radiofrequency ablation of Bosniak category III or IV cystic renal tumors: initial clinical experience

    Energy Technology Data Exchange (ETDEWEB)

    Park, Byung Kwan; Kim, Chan Kyo [Sungkyunkwan University School of Medicine, Department of Radiology and Center for Imaging Science, Samsung Medical Center, Seoul (Korea); Lee, Hyun Moo [Sungkyunkwan University School of Medicine, Department of Urology, Samsung Medical Center, Seoul (Korea)

    2008-07-15

    The purpose of this study was to assess the efficacy of image-guided radiofrequency (RF) ablation of cystic renal tumors. Between November 2005 and August 2007, computed tomography (CT) or ultrasound-guided RF ablation was performed in nine patients with 14 Bosniak category III (n = 5) or IV (n = 9) cystic renal tumors using an internally cooled RF ablation system. We evaluated the number of sessions, cycles and duration of energy application, treatment results, lesion size change, and complications. Together the cystic renal tumors required 15 sessions and 23 cycles of energy application. The duration of energy application per one tumor ablation ranged from 1 to 12 min (mean 6 min). The last follow-up CT indicated complete coagulation of 14/14 (100%) lesions. None of these tumors had recurred within 1-19 months (mean 8 months). The maximum diameter of the cystic renal tumors was significantly reduced from 2.5 {+-} 0.6 cm before ablation to 1.7 {+-} 0.7 cm at the last follow-up CT (P < 0.01). Complications were pneumothorax (n = 2), inguinal paresthesia (n = 1), and arteriovenous fistula (n = 1). Image-guided RF ablation is an effective treatment for Bosniak category III or IV cystic renal tumors, which might need relatively shorter duration of energy application than purely solid renal tumors of the same size. (orig.)

  16. Image-guided radiofrequency ablation of Bosniak category III or IV cystic renal tumors: initial clinical experience

    International Nuclear Information System (INIS)

    Park, Byung Kwan; Kim, Chan Kyo; Lee, Hyun Moo

    2008-01-01

    The purpose of this study was to assess the efficacy of image-guided radiofrequency (RF) ablation of cystic renal tumors. Between November 2005 and August 2007, computed tomography (CT) or ultrasound-guided RF ablation was performed in nine patients with 14 Bosniak category III (n = 5) or IV (n = 9) cystic renal tumors using an internally cooled RF ablation system. We evaluated the number of sessions, cycles and duration of energy application, treatment results, lesion size change, and complications. Together the cystic renal tumors required 15 sessions and 23 cycles of energy application. The duration of energy application per one tumor ablation ranged from 1 to 12 min (mean 6 min). The last follow-up CT indicated complete coagulation of 14/14 (100%) lesions. None of these tumors had recurred within 1-19 months (mean 8 months). The maximum diameter of the cystic renal tumors was significantly reduced from 2.5 ± 0.6 cm before ablation to 1.7 ± 0.7 cm at the last follow-up CT (P < 0.01). Complications were pneumothorax (n = 2), inguinal paresthesia (n = 1), and arteriovenous fistula (n = 1). Image-guided RF ablation is an effective treatment for Bosniak category III or IV cystic renal tumors, which might need relatively shorter duration of energy application than purely solid renal tumors of the same size. (orig.)

  17. Performance Assessment of Hearing Protection and Communication Enhancement Devices: Peltor Comtac III and IV

    Science.gov (United States)

    2015-07-01

    THIS PAGE IS INTENTIONALLY LEFT BLANK iii TABLE OF CONTENTS 1.0 INTRODUCTION...Factors, Vol 41, No. 4, 664-669, Dec 1999. 9. McKinley, R. L., & Bolia, R. S., The effects of hearing protectors on reaction times in audiovisual

  18. Genetic diversity of internalin genes in the ascB-dapE locus among Listeria monocytogenes lineages III and IV strains.

    Science.gov (United States)

    Chen, Jianshun; Cheng, Changyong; Lv, Yonghui; Fang, Weihuan

    2013-09-01

    Listeria monocytogenes is an important foodborne pathogen encompassing four phylogenetic lineages. Lineages III and IV are rare, but have been reported to show considerable biodiversity, providing important clues for the evolutionary history in Listeria. In this study, analysis of the ascB-dapE locus reveals genetic diversity in lineages III and IV, and is consistent with the classification of sublineages. Four of the six genetic patterns (two of sublineage IIIC and two of lineage IV) are specific to these two lineages. The ascB-dapE locus suggests a hot spot for genome diversification, and serves as an attractive molecular marker for better understanding of the biodiversity and population structure of lineages III and IV strains. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  19. A new oxidimetric reagent: potassium dichromate in a strong phosphoric acid medium-VI Potentiometric titration of vanadium(III) alone and in mixture with vanadium(IV).

    Science.gov (United States)

    Rao, G G; Rao, P K

    1966-09-01

    Vanadium(III) can be titrated at room temperature with potassium dichromate in an 8-12M phosphoric acid medium. Two potential breaks are observed in 12M phosphoric add with 0.2N potassium dichromate, the first corresponding to the oxidation of vanadium(III) to vanadium(IV) and the second to the oxidation of vanadium(IV) to vanadium(V). In titrations with 0.05N dichromate only the first break in potential is clearly observed. The method has been extended to the titration of mixtures of vanadium(III) and vanadium(IV). Conditions have also been found for the visual titration of vanadium(III) using ferroln or barium diphenylamine sulphonate as indicator.

  20. Bajo el signo de Licurgo: el reformismo atávico de Agis IV y Cleómenes III = Under the sign of Lycurgus: the atavistic reformism of Agis IV and Cleomenes III

    Directory of Open Access Journals (Sweden)

    César Fornis

    2016-04-01

    Full Text Available En el presente estudio se abordan los intentos de reforma en Esparta por los reyes Agis IV y Cleómenes III, que ambos, con finalidad legitimadora, presentaron como una recuperación atávica del kósmos (orden atribuido al legendario Licurgo, aquel que había formado ciudadanos virtuosos y sobre el que se había asentado el glorioso pasado de la ciudad. Se concluye que sus medidas no atacaron las raíces de los males que corroían la polis lacedemonia ni transformaron de modo significativo las vetustas estructuras sociales, políticas y económicas para adaptarlas a los nuevos tiempos, los del Helenismo.In this paper we analyze the attempts of reform of the Spartan state by the kings Agis IV and Cleomenes III. With legitimizing purpose, they presented them as an atavistic recovery of the kosmos (order ascribed to the legendary Lycurgus, which had formed to the citizens in moral virtues and which had settled the glorious past of the city. We conclude that these measures did not attack the roots of the evils corroding the Lacedaimonian polis or significantly transformed the old social, political and economic structures in order to adapt them to the new times, those of the Hellenism. 

  1. The energy consumption of private households 1990 - 2035 - Results of scenarios I - IV; Der Energieverbrauch der Privaten Haushalte, 1990 - 2035. Ergebnisse der Szenarien I bis IV und der zugehoerigen Sensitivitaeten BIP hoch, Preise hoch und Klima waermer

    Energy Technology Data Exchange (ETDEWEB)

    Hofer, P.

    2007-07-01

    This comprehensive report for the Swiss Federal Office of Energy (SFOE) presents four scenarios concerning the development of energy consumption in Swiss private households for the period 1990 - 2035. The four scenarios - status quo, increased co-operation between the state and the economy with various levies, global reduction of energy consumption and, finally, scenario IV 'on the way to a 2000-Watt Society' - are briefly described. In particular, the scenarios are examined for various sensitivities: high gross domestic product GDP, high prices and warmer climate. The results of the sensitivity analyses are compared and discussed and the necessary instruments are examined. This comprehensive report contains a large number of data-tables and graphical representations

  2. Cancer in the oropharynx: Cost calculation of different treatment modalities for controlled primaries, relapses and grade III/IV complications

    International Nuclear Information System (INIS)

    Nijdam, Wideke; Levendag, Peter; Noever, Inge; Groot, Carin Uyl-de; Agthoven, Michel van

    2005-01-01

    Background and purpose: This paper presents a model for cost calculation using the different treatment modalities for oropharyngeal (OPh) cancers used in our hospital. We compared full hospital costs, the associated costs of localregional relapses (LRR) and/or treatment related grade III/IV complications. Materials and methods: Patients with OPh cancer are treated in the Erasmus MC preferably by an organ function preservation protocol. That is, by external beam radiation therapy (EBRT) followed by a brachytherapy (BT) boost, and neck dissection in case of N+ disease (BT-group: 157 patients). If BT is not feasible, resection with postoperative EBRT (S-group [S=Surgery]: 110 patients) or EBRT-alone (EBRT-group: 77 patients) is being pursued. Actuarial localregional control (LRC), disease free survival (DFS) and overall survival (OS) at 5-years were calculated according to the Kaplan-Meier method. The mean costs per treatment group for diagnosis, primary Tx per se, follow-up, (salvage of) locoregional relapse (LRR), distant metastasis (DM), and/or grade III/IV complications needing clinical admission, were computed. Results: For the BT-, S-, or EBRT treatment groups, LRC rates at 5-years were 85, 82, and 55%, for the DFS, 61, 48, and 43%, and for the OS 65, 52, and 40%, respectively. The mean costs of primary Tx in case of the BT-group is EURO 13,466; for the S-group EURO 24,219, and EURO 12,502 for the EBRT-group. The mean costs of S (the main salvage modality) for a LRR of the BT group or EBRT-group, were EURO 17,861 and EURO 15,887, respectively. The mean costs of clinical management of Grade III/IV complications were EURO 7184 (BT-group), EURO 16,675 (S-group) and EURO 6437 (EBRT-group). Conclusion: The clinical outcome illustrates excellent LRC rates at 5-years for BT (85%), as well as for S (82%). The relatively low 55% LRC rate at 5-years for EBRT probably reflects a negative selection of patients. It is of interest that the total mean costs of patients alive

  3. Reversed phase chromatographic behaviour of Pu (III), Pu (IV) and Pu (VI) in presence of α-hydroxyisobutyric acid

    International Nuclear Information System (INIS)

    Jaison, P.G.; Telmore, V.M.; Kumar, Pranaw

    2016-01-01

    Understanding the aqueous chemistry of plutonium is important in process conditions as well as in environmental conditions. Since plutonium possesses multiple oxidation states which can coexist in solution, a reliable method for the identification of these oxidation states is essential to understand its physical and chemical processes. The identification of plutonium oxidation states is conventionally determined through a series of liquid-liquid extraction procedures using selective extractants. Spectroscopic and laser based techniques also have been used for the identification of its oxidation state in solutions. Liquid chromatographic behavior of different oxidation states of Pu and other actinide ions is reported to correlate their retention behaviour with stability constants. Objective of the present work is to study the reversed phase chromatography behavior of the three oxidation states of plutonium viz. Pu(III), Pu(IV) and Pu(VI) in presence of á-hydroxyisobutyric acid (HIBA) as an eluent

  4. Separation method for ions of elements of the III., IV., VI. and VIII. groups of periodical system

    International Nuclear Information System (INIS)

    Marhol, M.

    1973-01-01

    The method is presented of separating the ions of the elements of the periodic system groups III, IV, and VIII by ion exchangers. The ions are complex-bonded to a new type of ion exchanger consisting of the polycondensates of phenol with aldehydes or ketones and containing an atom of phosphorus, arsenic or antimony with an atom of sulphur or oxygen in a complex bond. The polymers of compounds containing a double bond, e.g., of butadiene, polyvinyl alcohol, polyethylene, polypropylene, and the compounds of styrene with fural may also be used for this purpose. The method is demonstrated on a case of uranium and heavy metal concentration and the separation thereof from waste waters. (L.K.)

  5. Reactivity of the uranium (U(IV)/U(VI)) and the plutonium (Pu(III)/Pu(IV)) in nitric aqueous solution under ultrasound; De l'influence des ultrasons sur la reactivite de l'uranium (U(IV)/U(VI)) et du plutonium (PU(III)/PU(IV)) en solution aqueuse nitrique

    Energy Technology Data Exchange (ETDEWEB)

    Venault, L

    1998-07-01

    To minimize the volumes of solid waste and industrial effluents generated at the end of cycle, particularly in the spent nuclear fuel reprocessing industry, research is currently under way on so-called innovative processes, designed to induce chemical reactions without adding reagent to the media. Among these processes, the use of ultrasound can prove advantageous, and the purpose of this study is to assess accurately the potential for its application. In the present context, this work shows that the transmission of an ultrasonic wave in aqueous nitric acid solution leads to: the accumulation of nitrous acid in solution, until a steady-sate concentration is reached; the removal of nitrogen monoxide and nitrogen dioxide in the gas stream. The initial kinetics of the formation of HNO{sub 2} in solution was quantified as a function of the nitric acid concentration and the ultrasound intensity. It was also shown than an excess of nitrous acid in nitric solution decomposes under the effect of ultrasound. It is also possible to accumulate hydrogen peroxide in solution during the ultrasonic irradiation of aqueous nitric acid solutions in the presence of a chemical species (N{sub 2}H{sub 5}{sup +}, NH{sub 2}SO{sub 3}H...) which reacts rapidly with HNO{sub 2}, preventing the reduction of H{sub 2}O{sub 2} by HNO{sub 2}. The mechanisms of HNO{sub 2} formation and decomposition, and the mechanism of H{sub 2}O{sub 2} formation during the ultrasonic irradiation of aqueous nitric acid solutions, are presented. Control of H{sub 2}O{sub 2} or HNO{sub 2} in a nitric acid medium under the effect of an ultrasonic wave can be exploited to control redox reactions of uranium and plutonium ions, particularly with respect to the oxidation of U and Pu (U(IV){yields} U(IV) or Pu(III) {yields} Pu(IV)) and the reduction of Pu (Pu(IV){yields} Pu(III). The redox behavior of uranium and plutonium ions in aqueous nitric solution subject to an ultrasonic flux is interpreted in term of effects

  6. Shewanella putrefaciens mtrB encodes an outer membrane protein required for Fe(III) and Mn(IV) reduction.

    Science.gov (United States)

    Beliaev, A S; Saffarini, D A

    1998-12-01

    Iron and manganese oxides or oxyhydroxides are abundant transition metals, and in aquatic environments they serve as terminal electron acceptors for a large number of bacterial species. The molecular mechanisms of anaerobic metal reduction, however, are not understood. Shewanella putrefaciens is a facultative anaerobe that uses Fe(III) and Mn(IV) as terminal electron acceptors during anaerobic respiration. Transposon mutagenesis was used to generate mutants of S. putrefaciens, and one such mutant, SR-21, was analyzed in detail. Growth and enzyme assays indicated that the mutation in SR-21 resulted in loss of Fe(III) and Mn(IV) reduction but did not affect its ability to reduce other electron acceptors used by the wild type. This deficiency was due to Tn5 inactivation of an open reading frame (ORF) designated mtrB. mtrB encodes a protein of 679 amino acids and contains a signal sequence characteristic of secreted proteins. Analysis of membrane fractions of the mutant, SR-21, and wild-type cells indicated that MtrB is located on the outer membrane of S. putrefaciens. A 5.2-kb DNA fragment that contains mtrB was isolated and completely sequenced. A second ORF, designated mtrA, was found directly upstream of mtrB. The two ORFs appear to be arranged in an operon. mtrA encodes a putative 10-heme c-type cytochrome of 333 amino acids. The N-terminal sequence of MtrA contains a potential signal sequence for secretion across the cell membrane. The amino acid sequence of MtrA exhibited 34% identity to NrfB from Escherichia coli, which is involved in formate-dependent nitrite reduction. To our knowledge, this is the first report of genes encoding proteins involved in metal reduction.

  7. A pilot randomised controlled trial of negative pressure wound therapy to treat grade III/IV pressure ulcers [ISRCTN69032034

    Science.gov (United States)

    2012-01-01

    Background Negative pressure wound therapy (NPWT) is widely promoted as a treatment for full thickness wounds; however, there is a lack of high-quality research evidence regarding its clinical and cost effectiveness. A trial of NPWT for the treatment of grade III/IV pressure ulcers would be worthwhile but premature without assessing whether such a trial is feasible. The aim of this pilot randomised controlled trial was to assess the feasibility of conducting a future full trial of NPWT for the treatment of grade III and IV pressure ulcers and to pilot all aspects of the trial. Methods This was a two-centre (acute and community), pilot randomised controlled trial. Eligible participants were randomised to receive either NPWT or standard care (SC) (spun hydrocolloid, alginate or foam dressings). Outcome measures were time to healing of the reference pressure ulcer, recruitment rates, frequency of treatment visits, resources used and duration of follow-up. Results Three hundred and twelve patients were screened for eligibility into this trial over a 12-month recruitment period and 12/312 participants (3.8%) were randomised: 6 to NPWT and 6 to SC. Only one reference pressure ulcer healed (NPWT group) during follow-up (time to healing 79 days). The mean number of treatment visits per week was 3.1 (NPWT) and 5.7 (SC); 6/6 NPWT and 1/6 SC participants withdrew from their allocated trial treatment. The mean duration of follow-up was 3.8 (NPWT) and 5.0 (SC) months. Conclusions This pilot trial yielded vital information for the planning of a future full study including projected recruitment rate, required duration of follow-up and extent of research nurse support required. Data were also used to inform the cost-effectiveness and value of information analyses, which were conducted alongside the pilot trial. Trial registration Current Controlled Trials ISRCTN69032034. PMID:22839453

  8. A pilot randomised controlled trial of negative pressure wound therapy to treat grade III/IV pressure ulcers [ISRCTN69032034

    Directory of Open Access Journals (Sweden)

    Ashby Rebecca L

    2012-07-01

    Full Text Available Abstract Background Negative pressure wound therapy (NPWT is widely promoted as a treatment for full thickness wounds; however, there is a lack of high-quality research evidence regarding its clinical and cost effectiveness. A trial of NPWT for the treatment of grade III/IV pressure ulcers would be worthwhile but premature without assessing whether such a trial is feasible. The aim of this pilot randomised controlled trial was to assess the feasibility of conducting a future full trial of NPWT for the treatment of grade III and IV pressure ulcers and to pilot all aspects of the trial. Methods This was a two-centre (acute and community, pilot randomised controlled trial. Eligible participants were randomised to receive either NPWT or standard care (SC (spun hydrocolloid, alginate or foam dressings. Outcome measures were time to healing of the reference pressure ulcer, recruitment rates, frequency of treatment visits, resources used and duration of follow-up. Results Three hundred and twelve patients were screened for eligibility into this trial over a 12-month recruitment period and 12/312 participants (3.8% were randomised: 6 to NPWT and 6 to SC. Only one reference pressure ulcer healed (NPWT group during follow-up (time to healing 79 days. The mean number of treatment visits per week was 3.1 (NPWT and 5.7 (SC; 6/6 NPWT and 1/6 SC participants withdrew from their allocated trial treatment. The mean duration of follow-up was 3.8 (NPWT and 5.0 (SC months. Conclusions This pilot trial yielded vital information for the planning of a future full study including projected recruitment rate, required duration of follow-up and extent of research nurse support required. Data were also used to inform the cost-effectiveness and value of information analyses, which were conducted alongside the pilot trial. Trial registration Current Controlled Trials ISRCTN69032034.

  9. An original accelerated radiotherapy schedule in stage III to IV head and neck cancers. Results in a multicenter setting

    International Nuclear Information System (INIS)

    Allal, A.S.

    2000-01-01

    Background: Accelerated radiotherapy delivery has recently been shown to be effective in overcoming repopulation during fractionated radiotherapy. The therapeutic ratio may be particularly favorable for 5-week regimens. This study reports the feasibility and results of a particular accelerated schedule in Stage III to IV head and neck carcinomas used in a multicenter setting. Patients and Methods: Seventy-four patients with Stage III (26 patients) or IV (48 patients) head and neck carcinomas were treated with a 5-week accelerated schedule (69.9 to 69.8 Gy in 41 to 40 fractions over a period of 35 to 36 days). Treatment began with 20 Gy in 10 daily fractions to initial involved sites, followed by bi-fractionated radiotherapy (2x1.6 Gy to 1.66 Gy/day) to a larger head and neck volume. Thirty-six (49%) patients received induction chemotherapy (median 3 cycles, range 1 to 4 cycles). Results: Grade 3 or 4 (RTOG) confluent mucositis was observed in 57 patients (77%) and Grade 3 dysphagia in 33 patients (44%). Grade 3 or 4 (RTOG-EORTC) late complications were scored in 10.5% of cases. The 5-year actuarial locoregional control rate was 56% (95% CI: 42 to 71). The 5-year overall actuarial survival was 32% (95% CI: 18 to 46). Induction chemotherapy was not associated with a more favorable outcome. Conclusions: This study demonstrates the feasibility of this schedule in a multicenter setting. The oncologic results appear similar to those obtained by other accelerated regimens, while the rate of late complications seems acceptable. Five-week accelerated regimens warrant further evaluation, particularly in conjunction with concomitant chemotherapy, in the framework of prospective trials. (orig.) [de

  10. Stage III & IV colon and rectal cancers share a similar genetic profile: a review of the Oregon Colorectal Cancer Registry.

    Science.gov (United States)

    Gawlick, Ute; Lu, Kim C; Douthit, Miriam A; Diggs, Brian S; Schuff, Kathryn G; Herzig, Daniel O; Tsikitis, Vassiliki L

    2013-05-01

    Determining the molecular profile of colon and rectal cancers offers the possibility of personalized cancer treatment. The purpose of this study was to determine whether known genetic mutations associated with colorectal carcinogenesis differ between colon and rectal cancers and whether they are associated with survival. The Oregon Colorectal Cancer Registry is a prospectively maintained, institutional review board-approved tissue repository with associated demographic and clinical information. The registry was queried for any patient with molecular analysis paired with clinical data. Patient demographics, tumor characteristics, microsatellite instability status, and mutational analysis for p53, AKT, BRAF, KRAS, MET, NRAS, and PIK3CA were analyzed. Categorical variables were compared using chi-square tests. Continuous variables between groups were analyzed using Mann-Whitney U tests. Kaplan-Meier analysis was used for survival studies. Comparisons of survival were made using log-rank tests. The registry included 370 patients: 69% with colon cancer and 31% with rectal cancer. Eighty percent of colon cancers and 68% of rectal cancers were stages III and IV. Mutational analysis found no significant differences in detected mutations between colon and rectal cancers, except that there were significantly more BRAF mutations in colon cancers compared with rectal cancers (10% vs 0%, P colon versus rectal cancers when stratified by the presence of KRAS, PIK3CA, and BRAF mutations. Stage III and IV colon and rectal cancers share similar molecular profiles, except that there were significantly more BRAF mutations in colon cancers compared with rectal cancers. Copyright © 2013 Elsevier Inc. All rights reserved.

  11. Light-induced reduction of rhodium(III) and palladium(II) on titanium dioxide dispersions and the selective photochemical separation and recovery of gold(III), platinum(IV), and rhodium(III) in chloride media

    Energy Technology Data Exchange (ETDEWEB)

    Borgarello, E.; Serpone, N.; Emo, G.; Harris, R.; Pelizzetti, E.; Minero, C.

    1986-12-03

    Irradiation of aqueous TiO/sub 2/ dispersions containing palladium(II) or rhodium(III) chloride salts with AM1 simulated sunlight leads to the photoreduction of these metals, which are deposited on the semiconductor particle surface. Oxygen is detrimental to the photoreduction of rhodium(III) but not the photoreduction of palladium(II). However, in both cases the reduction process is most efficient if the solution contains CH/sub 3/OH, which acts to scavenge valence band holes of the illuminated TiO/sub 2/ semiconductor. The selective photoreduction and recovery of precious metals from a dilute solution (as might be found in industrial wastes) have been investigated for a mixture of gold(III), platinum(IV), and rhodium(III) chloride salts as a function of various parameters (pH, presence or absence of O/sub 2/, presence or absence of a hole scavenger, and the concentration of the semiconductor). At pH 0, gold is easily separated from platinum and rhodium. The rate of photoreduction of gold(III) on TiO/sub 2/ is nearly independent of the concentration of the semiconductor, under the experimental conditions employed; the limiting rate is 2.7 x 10/sup -7/ M s/sup -1/. The potential utility of this selective photochemical technique is discussed.

  12. Electronic structure and lattice properties of metastable III-(N,V) semiconductor systems; Elektronische Struktur und Kristallgittereigenschaften von metastabilen III-(N,V)-Halbleitersystemen

    Energy Technology Data Exchange (ETDEWEB)

    Guengerich, M.

    2007-12-18

    This thesis gives an overview of these influences for Ga-V semiconductors (V=P,As,Sb). Lattice vibrations of the ternary alloys Ga(N,P), Ga(N,As) und Ga(N,Sb) are studied and analyzed with respect to the local binding of the N atoms in the host lattices. For the first time, pressure coefficients of the extended host phonons as well as of the N local vibrational modes in Ga(N,As) und Ga(N,P) are determined by Raman spectroscopy under hydrostatic pressure. The relationship between the force constant of the Ga-N bond and the bond length is determined. A central aspect of the thesis is the concentration dependence of optical transitions in Ga(N,P) and Ga(N,As), studied by spectroscopic methods. The impurity levels in both materials are determined by the spatial statistics of the N atoms. (orig.)

  13. ABNORMAL TYPE-III COLLAGEN PRODUCED BY AN EXON-17-SKIPPING MUTATION OF THE COL3A1 GENE IN EHLERS-DANLOS SYNDROME TYPE-IV IS NOT INCORPORATED INTO THE EXTRACELLULAR-MATRIX

    NARCIS (Netherlands)

    CHIODO, AA; SILLENCE, DO; COLE, WG; BATEMAN, JF

    1995-01-01

    A novel heterozygous mutation of the COL3Al gene that encodes the alpha 1(III) chains of type III collagen was identified in a family with the: acrogeric form of Ehlers-Danlos syndrome type IV (EDS-IV). Cultured dermal fibroblasts produced normal and shortened alpha 1(III) chains. The triple helix

  14. [Nordosteuropa als Geschichtsregion. Beiträge des III. Internationalen Symposiums zur deutschen Kultur und Geschichte im europäischen Nordosten vom 20.-22. September 2001 in Tallinn

    Index Scriptorium Estoniae

    Lawaty, Andreas

    2011-01-01

    Arvustus : Nordosteuropa als Geschichtsregion. Beiträge des III. Internationalen Symposiums zur deutschen Kultur und Geschichte im europäischen Nordosten vom 20.-22. September 2001 in Tallinn. Lübeck : Verlag Schmidt-Römhild 2006. (Veröffentlihungen der Aue-Stiftung. 17)

  15. [Nordosteuropa als Geschichtsregion : Beiträge des III. Internationalen Symposiums zur Deutschen Kultur und Geschichte im Europäischen Nordosten vom 20. - 22. September 2001 in Tallinn (Estland)] / Janet Laidla

    Index Scriptorium Estoniae

    Laidla, Janet, 1982-

    2008-01-01

    Arvustus: Nordosteuropa als Geschichtsregion : Beiträge des III. Internationalen Symposiums zur Deutschen Kultur und Geschichte im Europäischen Nordosten vom 20. - 22. September 2001 in Tallinn (Estland). (Helsinki : Aue-Stiftung ; Lübeck : Scmidt-Römhild, 2006)

  16. Complexation of Eu(III), Th(IV) and U(VI) by humic substances

    International Nuclear Information System (INIS)

    Moulin, V.; Reiller, P.; Dautel, C.; Plancque, G.; Laszak, I.; Moulin, C.

    1999-01-01

    Complexation of actinides by humic substances has been studied by different techniques depending on the actinide and its oxidation state. For trivalent actinide (using a rare earth element, Eu as an analogue of trivalent actinide), Time-Resolved Laser-Induced Fluorescence (TRLIF) has been retained as a method for direction speciation at low level. By varying pH and physicochemical conditions (absence of carbonate ions) and at fixed ionic strength, it is possible together to identify spectrally and temporally, all the hydroxo and carbonato complexes. This approach has also been retained for U(VI) as a model of hexavalent actinide, for which hydroxo complexes have been characterized by TRLIF (the simple carbonato complexes are not fluorescent). In the case of U(VI), titrations hy humic acids of U(VI) solutions at various pH have allowed to characterize organic complexes formed with U(VI): single complexes (UO 2 HA) and mixed complexes (UO 2 (OH) 3 HA). The impact on U(VI) speciation has then been identified. In the case of Th(IV) as a model of tetravalent actinides, a competitive method has been used to obtain data on the Th-HA system by studying the ternary system silica colloid/HA/Th at constant pH (Schubert method). Apparent interaction constants have been calculated depending on Th hydrolysis constants used. A study of the system Th/HA/silica has a function of pH and for different HA concentrations has shown the strong complexing character of humic acids towards Th in the pH range 4-9. (orig.)

  17. Polypyrrole–titanium(IV) doped iron(III) oxide nanocomposites: Synthesis, characterization with tunable electrical and electrochemical properties

    International Nuclear Information System (INIS)

    Nandi, Debabrata; Ghosh, Arup Kumar; Gupta, Kaushik; De, Amitabha; Sen, Pintu; Duttachowdhury, Ankan; Ghosh, Uday Chand

    2012-01-01

    Highlights: ► Synthesis and characterization of polymer nanocomposite based on titanium doped iron(III) oxide. ► Electrical conductivity increased 100 times in composite with respect to polymer. ► Electrochemical capacitance of polymer composites increased with nanooxide content. ► Thermal stability of the polymer enhanced with nano oxide content. -- Abstract: Titanium(IV)-doped synthetic nanostructured iron(III) oxide (NITO) and polypyrrole (PPy) nanocomposites was fabricated by in situ polymerization using FeCl 3 as initiator. The polymer nanocomposites (PNCs) and pure NITO were characterized by X-ray diffraction, Föurier transform infrared spectroscopy, scanning electron microscopy, electron dispersive X-ray spectroscopy, transmission electron microscopy, etc. Thermo gravimetric and differential thermal analyses showed the enhancement of thermal stability of PNCs than the pure polymer. Electrical conductivity of the PNCs had increased significantly from 0.793 × 10 −2 S/cm to 0.450 S/cm with respect to the PPy, and that had been explained by 3-dimensional variable range hopping (VRH) conduction mechanisms. In addition, the specific capacitance of PNCs had increased from 147 F/g to 176 F/g with increasing NITO content than that of pure NITO (26 F/g), presumably due to the growing of mesoporous structure with increasing NITO content in PNCs which reduced the charge transfer resistance significantly.

  18. Displacement of the hip center of rotation after arthroplasty of Crowe III and IV dysplasia: a radiological and biomechanical study.

    Science.gov (United States)

    Abolghasemian, Mansour; Samiezadeh, Saeid; Jafari, Davood; Bougherara, Habiba; Gross, Allan E; Ghazavi, Mohammad T

    2013-06-01

    To study the direction and biomechanical consequences of hip center of rotation (HCOR) migration in Crowe type III and VI hips after total hip arthroplasty, post-operative radiographs and CT scans of several unilaterally affected hips were evaluated. Using a three-dimensional model of the human hip, the HCOR was moved in all directions, and joint reaction force (JRF) and abductor muscle force (AMF) were calculated for single-leg stance configuration. Comparing to the normal side, HCOR had displaced medially and inferiorly by an average of 23.4% and 20.8%, respectively, of the normal femoral head diameter. Significant decreases in JRF (13%) and AMF (46.13%) were observed in a presumptive case with that amount of displacement. Isolated inferior displacement had a small, increasing effect on these forces. In Crowe type III and IV hips, the HCOR migrates inferiorly and medially after THA, resulting in a decrease in JRF, AMF, and abductor muscle contraction force. Copyright © 2013 Elsevier Inc. All rights reserved.

  19. Neuausrichtung und Konsolidierung

    Science.gov (United States)

    Grohmann, Heinz

    Mit der Wahl von Wolfgang Wetzel zum Vorsitzenden der Deutschen Statistischen Gesellschaft im Jahre 1972 begann eine 32jährige Ära, in der die praktische und die theoretische Statistik in einem ausgewogenen Verhältnis gepflegt wurden. Ein regelmäßiger vierjähriger Wechsel im Vorsitz stärkte die Gemeinschaft und die praktische wie die wissenschaftliche Arbeit gleichermaßen. Die jährlichen Hauptversammlungen behandelten gesellschaftlich aktuelle wie zukunftsorientierte Themen, und die Ausschüsse sowie weitere Veranstaltungen gaben Gelegenheit zur Förderung und Pflege einer Vielzahl von Arbeitsgebieten der Statistik. Darüber wird nicht nur in diesem Kapitel, sondern auch in den Teilen II und III des Bandes berichtet.

  20. Liquid-liquid extraction/separation of platinum(IV) and rhodium(III) from acidic chloride solutions using tri-iso-octylamine

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Jin-Young, E-mail: jinlee@kigam.re.kr [Metals Recovery Department, Minerals Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), 92 Gahangno, Yuesong-gu, Daejeon 305-350 (Korea, Republic of); Rajesh Kumar, J., E-mail: rajeshkumarphd@rediffmail.com [Metals Recovery Department, Minerals Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), 92 Gahangno, Yuesong-gu, Daejeon 305-350 (Korea, Republic of); Kim, Joon-Soo; Park, Hyung-Kyu; Yoon, Ho-Sung [Metals Recovery Department, Minerals Resources Research Division, Korea Institute of Geoscience and Mineral Resources (KIGAM), 92 Gahangno, Yuesong-gu, Daejeon 305-350 (Korea, Republic of)

    2009-08-30

    Liquid-liquid extraction/separation of platinum(IV) and rhodium(III) from acidic chloride solutions was carried out using tri-iso-octylamine (Alamine 308) as an extractant diluted in kerosene. The percentage extraction of platinum(IV) and rhodium(III) increased with increase in acid concentration up to 8 mol L{sup -1}. However, at 10 mol L{sup -1} HCl concentration, the extraction behavior was reversed, indicating the solvation type mechanism during extraction. The quantitative extraction of {approx}98% platinum(IV) and 36% rhodium(III) was achieved with 0.01 mol L{sup -1} Alamine 308. The highest separation factor (S.F. = 184.7) of platinum(IV) and rhodium(III) was achieved with 0.01 mol L{sup -1} Alamine 308 at 1.0 mol L{sup -1} of hydrochloric acid concentration. Alkaline metal salts like sodium chloride, sodium nitrate, sodium thiocyanate, lithium chloride, lithium nitrate, potassium chloride and potassium thiocyanate used for the salting-out effect. LiCl proved as best salt for the extraction of platinum(IV). Temperature effect demonstrates that the extraction process is exothermic. Hydrochloric acid and thiourea mixture proved to be better stripping reagents when compared with other mineral acids and bases.

  1. Evaluation of concomitant use of non-specific immunopotentiator on 172 cases of primary lung cancer (Stage III, IV) treated with radiation combined with chemotherapy

    International Nuclear Information System (INIS)

    Ogawa, Yasuhiro; Kimura, Shuji; Imajo, Yoshinari; Hamada, Fumio; Miyaji, Chihiro

    1982-01-01

    The clinical effect of concomitant use of non-specific immunopotentiator OK-432 and/or PSK was studied about 172 cases of primary lung cancer (Stage III, IV). In 91 cases in stage III, fifty percent survival period was found to be 11.5 months for 63 cases with OK-432 and/or PSK, and 7.5 months for 28 cases without immunotherapy, respectively. In 81 cases in stage IV, fifty percent survival period was found to be 6.7 months for 45 cases with OK-432 and/or PSK, and 3.3 months for 36 cases without immunotherapy, respectively. (author)

  2. Co-precipitation of plutonium(IV) and americium(III) from nitric acid-oxalic acid solutions with bismuth oxalate

    International Nuclear Information System (INIS)

    Pius, I.C.; Noronha, D.M.; Chaudhury, Satyajeet

    2017-01-01

    Co-precipitation of plutonium and americium from nitric acid-oxalic acid solutions with bismuth oxalate has been investigated for the removal of these long lived α-active nuclides from waste solutions. Effect of concentration of bismuth and oxalic acid on the co-precipitation of Pu(IV) from 3 M HNO_3 has been investigated. Similar experiments were also carried out from 3.75 M HNO_3 on co-precipitation of Am(III) to optimize the conditions of precipitation. Strong co-precipitation of Pu(IV) and Am(III) with bismuth oxalate indicate feasibility of treatment of plutonium and americium bearing waste solutions. (author)

  3. Complexation of trivalent actinides and lanthanides with hydrophilic N-donor ligands for Am(III)/Cm(III) and An(III)/Ln(III) separation; Komplexierung von trivalenten Actiniden und Lanthaniden mit hydrophilen N-Donorliganden zur Am(III)/Cm(III)- bzw. An(III)/Ln(III)-Trennung

    Energy Technology Data Exchange (ETDEWEB)

    Wagner, Christoph

    2017-07-24

    The implementation of actinide recycling processes is considered in several countries, aiming at the reduction of long-term radiotoxicity and heat load of used nuclear fuel. This requires the separation of the actinides from the fission and corrosion products. The separation of the trivalent actinides (An(III)) Am(III) and Cm(III), however, is complicated by the presence of the chemically similar fission lanthanides (Ln(III)). Hydrophilic N-donor ligands are employed as An(III) or Am(III) selective complexing agents in solvent extraction to strip An(III) or Am(III) from an organic phase loaded with An(III) and Ln(III). Though they exhibit excellent selectivity, the complexation chemistry of these ligands and the complexes formed during solvent extraction are not sufficiently characterized. In the present thesis the complexation of An(III) and Ln(III) with hydrophilic N-donor ligands is studied by time resolved laser fluorescence spectroscopy (TRLFS), UV/Vis, vibronic sideband spectroscopy and solvent extraction. TRLFS studies on the complexation of Cm(III) and Eu(III) with the Am(III) selective complexing agent SO{sub 3}-Ph-BTBP (tetrasodium 3,3{sup '},3'',3{sup '''}-([2,2{sup '}-bipyridine]-6,6{sup '}-diylbis(1,2,4-triazine-3,5,6-triyl)) tetrabenzenesulfonate) revealed the formation of [M(SO{sub 3}-Ph-BTBP){sub n}]{sup (4n-3)-} complexes (M = Cm(III), Eu(III); n = 1, 2). The conditional stability constants were determined in different media yielding two orders of magnitude larger β{sub 2}-values for the Cm(III) complexes, independently from the applied medium. A strong impact of ionic strength on the stability and stoichiometry of the formed complexes was identified, resulting from the stabilization of the pentaanionic [M(SO{sub 3}-Ph-BTBP){sub 2}]{sup 5-} complex with increasing ionic strength. Thermodynamic studies of Cm(III)-SO{sub 3}-Ph-BTBP complexation showed that the proton concentration of the applied medium impacts

  4. Correlation functions for the distribution coefficients of U(IV) and Pu(III) ions between aqueous nitric acid and 30% TBP in an aliphatic diluent

    Energy Technology Data Exchange (ETDEWEB)

    Geldard, J.F.; Beyerlein, A.L.; Phillips, L.

    1985-09-01

    Distribution coefficient correlations for U(IV) and Pu(III) are obtained in terms of a modified form of the total nitrate ion salting strength that was successfully used to obtain distribution coefficient correlations for U(VI) and Pu(IV) in the earlier work of G.L. Richardson. The modification of salting strength was needed to account for the fact that the U(IV) distribution coefficients measured under conditions where U(VI) is present consistently fall below those obtained when it is absent. The correlations were incorporated into the mixer-settler computer model PUBG, and in the simulation of a 20-stage 1B partitioning contactor, calculated product stream concentrations were in excellent agreement with experiment. Earlier mixer-settler computer models, which failed to account for U(IV) distribution coefficients, predicted that U(IV) remained in the aqueous product stream, which is contrary to the experimental measurements.

  5. Correlation functions for the distribution coefficients of U(IV) and Pu(III) ions between aqueous nitric acid and 30% TBP in an aliphatic diluent

    International Nuclear Information System (INIS)

    Geldard, J.F.; Beyerlein, A.L.; Phillips, L.

    1985-01-01

    Distribution coefficient correlations for U(IV) and Pu(III) are obtained in terms of a modified form of the total nitrate ion salting strength that was successfully used to obtain distribution coefficient correlations for U(VI) and Pu(IV) in the earlier work of G.L. Richardson. The modification of salting strength was needed to account for the fact that the U(IV) distribution coefficients measured under conditions where U(VI) is present consistently fall below those obtained when it is absent. The correlations were incorporated into the mixer-settler computer model PUBG, and in the simulation of a 20-stage 1B partitioning contactor, calculated product stream concentrations were in excellent agreement with experiment. Earlier mixer-settler computer models, which failed to account for U(IV) distribution coefficients, predicted that U(IV) remained in the aqueous product stream, which is contrary to the experimental measurements

  6. Can concurrent chemoradiotherapy replace surgery and postoperative radiation for locally advanced stage III/IV tonsillar squamous cell carcinoma?

    Science.gov (United States)

    Park, Geumju; Lee, Sang-Wook; Kim, Sang Yoon; Nam, Soon Yuhl; Choi, Seung-Ho; Kim, Sung-Bae; Roh, Jong-Lyel; Yoon, Dok Hyun; Kim, Su Ssan; Park, Jin-Hong; Kim, Young Seok; Yoon, Sang Min; Song, Si Yeol; Kim, Jong Hoon; Choi, Eun Kyung; DO Ahn, Seung

    2013-03-01

    To compare surgery and postoperative radiotherapy (PORT) with the non-surgical combination of chemotherapy and radiation therapy (CCRT) for locally advanced squamous cell carcinoma (SCC) of the tonsil by measuring treatment outcomes and treatment-related complications. The records of 114 patients with non-metastatic stage III/IV tonsillar SCC treated between July, 1998 and December, 2010 were reviewed retrospectively. Among the 114 patients, 65 received PORT and 49 received CCRT. In the PORT group, treatment included wide surgical resection of the tumor with neck dissection and administration of PORT to the primary tumor bed with a median dose of 60 Gy. In the CCRT group, a median dose of 70 Gy was delivered to the gross tumor, and 46 patients received concurrent chemotherapy with i.v. cisplatin. The median follow-up time was 58 months in the PORT group and 44 months in the CCRT group. There was no significant difference between PORT and CCRT in terms of 5-year locoregional recurrence-free survival (88.4% vs. 91.4%, p=0.68), distant metastasis-free survival (88.9% vs. 92.3%, p=0.60), disease-free survival (79.5% vs. 84.2%, p=0.63) or overall survival (78.9% vs. 88.9%, p=0.45). More CCRT patients than PORT patients experienced grade 3 (or higher) hematological toxicities and grade 2 pharyngitis during treatment. Chronic toxicity, manifested as swallowing difficulty, dry mouth and trismus, was similar between the two treatment groups. CCRT provides similar levels of local and distant control in patients with locally advanced tonsillar SCC as PORT, yet fails to show any superiority in preserving functions such as swallowing, saliva production, and mastication.

  7. Liquid–liquid extraction of Pu(IV), U(VI) and Am(III) using malonamide in room temperature ionic liquid as diluent

    International Nuclear Information System (INIS)

    Rout, Alok; Venkatesan, K.A.; Srinivasan, T.G.; Vasudeva Rao, P.R.

    2012-01-01

    Highlights: ► Extraction of actinides using malonamide in room temperature ionic liquid. ► High distribution ratios of actinides in room temperature ionic liquid. ► Ion exchange mechanism. ► Stoichiometry of extraction. ► High separation factors of U(VI) and Pu(IV) over Am(III) and fission products. - Abstract: The extraction behavior of U(VI), Pu(IV) and Am(III) from nitric acid medium by a solution of N,N-dimethyl-N,N-dioctyl-2-(2-hexyloxyethyl)malonamide (DMDOHEMA) in the room temperature ionic liquid, 1–butyl–3–methylimidazolium bis(trifluoromethanesulfonyl)imide (C 4 mimNTf 2 ), was studied. The distribution ratio of these actinides in DMDOHEMA/C 4 mimNTf 2 was measured as a function of various parameters such as the concentration of nitric acid, DMDOHEMA, NTf 2 − , alkyl chain length of ionic liquid. The extraction of actinides in the absence of DMDOHEMA was insignificant and the distribution ratio achieved in conjunction with C 4 mimNTf 2 , was remarkable. The separation factor of U(VI) and Pu(IV) achieved with the use of DMDOHEMA, ionic liquid was compared with Am(III) and other fission products. The stoichiometry of the metal-solvate was determined to be 1:2 for U(VI) and Pu(IV) and 1:3 for Am(III).

  8. Immunohistochemical expression of mitochondrial membrane complexes (MMCs) I, III, IV and V in malignant and benign periampullary epithelium: a potential target for drug therapy of periampullary cancer?

    International Nuclear Information System (INIS)

    Aloysius, Mark M; Zaitoun, Abed M; Bates, Timothy E; Ilyas, Mohammad; Constantin-Teodosiu, Dumitru; Rowlands, Brian J; Lobo, Dileep N

    2010-01-01

    Mitochondrial membrane complexes (MMCs) are key mediators of cellular oxidative phosphorylation, and inhibiting them could lead to cell death. No published data are available on the relative abundance of MMCs in different periampullary cancers. Therefore, we studied the expression profile of MMCs I, III, IV and V in periampullary cancers, reactive pancreatitis, normal pancreas and chronic pancreatitis. This was a retrospective study on tissue microarrays constructed from formalin-fixed paraffin-embedded tissue from 126 consecutive patients (cancer = 104, chronic pancreatitis = 22) undergoing pancreatic resections between June 2001 and June 2006. 78 specimens of chronic pancreatitis tissue were obtained adjacent to areas of cancer. Normal pancreatic tissue was obtained from the resection specimens in a total of 30 patients. Metastatic tumours in 61 regional lymph nodes from 61 patients were also studied. MMCs I, III, IV and V were highly expressed (p < 0.05) in all primary periampullary cancers compared with metastatic lymph nodes and adjacent benign pancreas. MMCs III, IV and V were highly expressed in all cancers regardless of type compared with chronic pancreatitis (p < 0.05). Higher expression of MMCs I and V was associated with better survival and may, in part, relate to lower expression of these MMCs in poorly differentiated tumours compared with well and moderately differentiated tumours. Differential expression of MMCs III, IV and V in primary periampullary cancers compared with adjacent benign periampullary tissue and chronic pancreatitis is a novel finding, which may render them attractive anticancer targets

  9. 75 FR 23263 - Alta Wind I, LLC; Alta Wind II, LLC; Alta Wind III, LLC; Alta Wind IV, LLC; Alta Wind V, LLC...

    Science.gov (United States)

    2010-05-03

    ... DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. EL10-62-000] Alta Wind I, LLC; Alta Wind II, LLC; Alta Wind III, LLC; Alta Wind IV, LLC; Alta Wind V, LLC; Alta Wind VI, LLC; Alta Wind VII, LLC; Alta Wind VIII, LLC; Alta Windpower Development, LLC; TGP Development Company, LLC...

  10. A consistent phenomenological model for natural organic matter linked migration of Cm(III), Pu(III/IV), Np(IV), Tc(IV) and Pa(V) in the Boom Clay

    International Nuclear Information System (INIS)

    Martens, E.; Maes, N.; Bruggeman, C.; Van Gompel, M.

    2010-01-01

    of magnitude lower than for the first cell. This indicates that the species that is transported is not a conservative tracer as otherwise the outlet concentration should equal the inlet concentration. Recently, Bruggeman and Maes (2009) put forward a phenomenological model which describes the Tc retention and transport mechanisms in Boom Clay. They hypothesise that Tc is transported as a Tc-NOM colloidal species exhibiting slow dissociation kinetics. This phenomenological model was now tested to describe the NOM related transport of Cm, Pu, Np, Tc and Pa in these 'sequential' migration experiments. All these RNs are known to form strong complexes with NOM in batch experiments. To describe the RN elution profiles from the second clay core, we used the migration parameters (diffusion coefficient, porosity and retardation factor) of NOM derived from small-scale lab experiments and validated by large-scale (long-term) in-situ tests in combination with a first order kinetic dissociation reaction. The transport feature of the geochemical code PHREEQC-2 was used for the simulations. Based on the original NOM transport parameters, and a narrow range for the parameter in the kinetic dissociation equation (2.4-8.5 x 10 -8 s -1 ), a good match with the experimental data could be achieved for all RNs considered in this study. This supports our hypothesis that for a large array of RNs (Tc, Pa, Np, Pu and Cm in this study), the transport behaviour observed in the experiments is indeed linked to NOM, irrespective of their dominant valence state (tri-, tetra-, pentavalent). Their overall transport potential (at longer times and distances) remains limited due to dissociation and subsequent sorption on the Boom Clay. The results presented in this study form an important step forward for safety assessments analysis: (i) the model is easy to implement, (ii) there is a link with a phenomenological description, and (iii) elements with a similar NOM association behaviour can be

  11. Comparison of Wechsler Memory Scale-Fourth Edition (WMS-IV) and Third Edition (WMS-III) dimensional structures: improved ability to evaluate auditory and visual constructs.

    Science.gov (United States)

    Hoelzle, James B; Nelson, Nathaniel W; Smith, Clifford A

    2011-03-01

    Dimensional structures underlying the Wechsler Memory Scale-Fourth Edition (WMS-IV) and Wechsler Memory Scale-Third Edition (WMS-III) were compared to determine whether the revised measure has a more coherent and clinically relevant factor structure. Principal component analyses were conducted in normative samples reported in the respective technical manuals. Empirically supported procedures guided retention of dimensions. An invariant two-dimensional WMS-IV structure reflecting constructs of auditory learning/memory and visual attention/memory (C1 = .97; C2 = .96) is more theoretically coherent than the replicable, heterogeneous WMS-III dimension (C1 = .97). This research suggests that the WMS-IV may have greater utility in identifying lateralized memory dysfunction.

  12. Electrochemical investigations of Pu(IV)/Pu(III) redox reaction using graphene modified glassy carbon electrodes and a comparison to the performance of SWCNTs modified glassy carbon electrodes

    International Nuclear Information System (INIS)

    Gupta, Ruma; Gamare, Jayashree; Sharma, Manoj K.; Kamat, J.V.

    2016-01-01

    Highlights: • First report of aqueous electrochemistry of Plutonium on graphene modified electrode. • Graphene is best electrocatalytic material for Pu(IV)/Pu(III) redox couple among the reported modifiers viz. reduced graphene oxide (rGO) and SWCNT’s. • The electrochemical reversibility of Pu(IV)/Pu(III) redox couple improves significantly on graphene modified electrode compared to previously reported rGO & SWCNTs modified electrodes • Donnan interaction between plutonium species and graphene surface offers a possibility for designing a highly sensitive sensor for plutonium • Graphene modified electrode shows higher sensitivity for the determination of plutonium compared to glassy carbon and single walled carbon nanotube modified electrode - Abstract: The work reported in this paper demonstrates for the first time that graphene modified glassy carbon electrode (Gr/GC) show remarkable electrocatalysis towards Pu(IV)/Pu(III) redox reaction and the results were compared with that of single-walled carbon nanotubes modified GC (SWCNTs/GC) and glassy carbon (GC) electrodes. Graphene catalyzes the exchange of current of the Pu(IV)/Pu(III) couple by reducing both the anodic and cathodic overpotentials. The Gr/GC electrode shows higher peak currents (i p ) and smaller peak potential separation (ΔE p ) values than the SWCNTs/GC and GC electrodes. The heterogeneous electron transfer rate constants (k s ), charge transfer coefficients (α) and the diffusion coefficients (D) involved in the electrocatalytic redox reaction were determined. Our observations show that graphene is best electrocatalytic material among both the SWCNTs and GC to study Pu(IV)/Pu(III) redox reaction.

  13. Ascorbate Biosynthesis in Mitochondria Is Linked to the Electron Transport Chain between Complexes III and IV1

    Science.gov (United States)

    Bartoli, Carlos G.; Pastori, Gabriela M.; Foyer, Christine H.

    2000-01-01

    Ascorbic acid is synthesized from galactono-γ-lactone (GL) in plant tissues. An improved extraction procedure involving ammonium sulfate precipitation of membrane proteins from crude leaf homogenates yielded a simple, quick method for determining tissue activities of galactono-γ-lactone dehydrogenase (GLDH). Total foliar ascorbate and GLDH activity decreased with leaf age. Subcellular fractionation experiments using marker enzymes demonstrated that 80% of the total GLDH activity was located on the inner mitochondrial membrane, and 20% in the microsomal fraction. Specific antibody raised against potato (Solanum tuberosum L.) tuber GLDH recognized a 56-kD polypeptide in extracts from the mitochondrial membranes but failed to detect the equivalent polypeptide in microsomes. We demonstrate that isolated intact mitochondria synthesize ascorbate in the presence of GL. GL stimulated mitochondrial electron transport rates. The respiration inhibitor antimycin A stimulated ascorbate biosynthesis, while cyanide inhibited both respiration and ascorbate production. GL-dependent oxygen uptake was observed in isolated intact mitochondria. This evidence suggests that GLDH delivers electrons to the mitochondrial electron transport chain between complexes III and IV. PMID:10806250

  14. Protein homology network families reveal step-wise diversification of Type III and Type IV secretion systems.

    Directory of Open Access Journals (Sweden)

    Duccio Medini

    2006-12-01

    Full Text Available From the analysis of 251 prokaryotic genomes stored in public databases, the 761,260 deduced proteins were used to reconstruct a complete set of bacterial proteic families. Using the new Overlap algorithm, we have partitioned the Protein Homology Network (PHN, where the proteins are the nodes and the links represent homology relationships. The algorithm identifies the densely connected regions of the PHN that define the families of homologous proteins, here called PHN-Families, recognizing the phylogenetic relationships embedded in the network. By direct comparison with a manually curated dataset, we assessed that this classification algorithm generates data of quality similar to a human expert. Then, we explored the network to identify families involved in the assembly of Type III and Type IV secretion systems (T3SS and T4SS. We noticed that, beside a core of conserved functions (eight proteins for T3SS, seven for T4SS, a variable set of accessory components is always present (one to nine for T3SS, one to five for T4SS. Each member of the core corresponds to a single PHN-Family, while accessory proteins are distributed among different pure families. The PHN-Family classification suggests that T3SS and T4SS have been assembled through a step-wise, discontinuous process, by complementing the conserved core with subgroups of nonconserved proteins. Such genetic modules, independently recruited and probably tuned on specific effectors, contribute to the functional specialization of these organelles to different microenvironments.

  15. Discrepancy between WISC-III and WISC-IV Cognitive Profile in Autism Spectrum: What Does It Reveal about Autistic Cognition?

    Science.gov (United States)

    Nader, Anne-Marie; Jelenic, Patricia; Soulières, Isabelle

    2015-01-01

    The cognitive profile and measured intellectual level vary according to assessment tools in children on the autism spectrum, much more so than in typically developing children. The recent inclusion of intellectual functioning in the diagnostic process for autism spectrum disorders leads to the crucial question on how to assess intelligence in autism, especially as some tests and subtests seem more sensitive to certain neurodevelopmental conditions. Our first aim was to examine the cognitive profile on the current version of the most widely used test, the Wechsler Intelligence Scales for Children (WISC-IV), for a homogenous subgroup of children on the autism spectrum, i.e. corresponding to DSM-IV diagnosis of “autism”. The second aim was to compare cognitive profiles obtained on the third edition versus 4th edition of WISC, in order to verify whether the WISC-IV yields a more distinctive cognitive profile in autistic children. The third aim was to examine the impact of the WISC-IV on the cognitive profile of another subgroup, children with Asperger’s Syndrome. 51 autistic, 15 Asperger and 42 typically developing children completed the WISC-IV and were individually matched to children who completed the WISC-III. Divergent WISC-IV profiles were observed despite no significant intelligence quotient difference between groups. Autistic children scored significantly higher on the Perceptual Reasoning Index than on the Verbal Comprehension Index, a discrepancy that nearly tripled in comparison to WISC-III results. Asperger children scored higher on the VCI than on other indexes, with the lowest score found on the Processing Speed Index. WISC-IV cognitive profiles were consistent with, but more pronounced than WISC-III profiles. Cognitive profiles are a valuable diagnostic tool for differential diagnosis, keeping in mind that children on the autism spectrum might be more sensitive to the choice of subtests used to assess intelligence. PMID:26673881

  16. Discrepancy between WISC-III and WISC-IV Cognitive Profile in Autism Spectrum: What Does It Reveal about Autistic Cognition?

    Science.gov (United States)

    Nader, Anne-Marie; Jelenic, Patricia; Soulières, Isabelle

    2015-01-01

    The cognitive profile and measured intellectual level vary according to assessment tools in children on the autism spectrum, much more so than in typically developing children. The recent inclusion of intellectual functioning in the diagnostic process for autism spectrum disorders leads to the crucial question on how to assess intelligence in autism, especially as some tests and subtests seem more sensitive to certain neurodevelopmental conditions. Our first aim was to examine the cognitive profile on the current version of the most widely used test, the Wechsler Intelligence Scales for Children (WISC-IV), for a homogenous subgroup of children on the autism spectrum, i.e. corresponding to DSM-IV diagnosis of "autism". The second aim was to compare cognitive profiles obtained on the third edition versus 4th edition of WISC, in order to verify whether the WISC-IV yields a more distinctive cognitive profile in autistic children. The third aim was to examine the impact of the WISC-IV on the cognitive profile of another subgroup, children with Asperger's Syndrome. 51 autistic, 15 Asperger and 42 typically developing children completed the WISC-IV and were individually matched to children who completed the WISC-III. Divergent WISC-IV profiles were observed despite no significant intelligence quotient difference between groups. Autistic children scored significantly higher on the Perceptual Reasoning Index than on the Verbal Comprehension Index, a discrepancy that nearly tripled in comparison to WISC-III results. Asperger children scored higher on the VCI than on other indexes, with the lowest score found on the Processing Speed Index. WISC-IV cognitive profiles were consistent with, but more pronounced than WISC-III profiles. Cognitive profiles are a valuable diagnostic tool for differential diagnosis, keeping in mind that children on the autism spectrum might be more sensitive to the choice of subtests used to assess intelligence.

  17. Discrepancy between WISC-III and WISC-IV Cognitive Profile in Autism Spectrum: What Does It Reveal about Autistic Cognition?

    Directory of Open Access Journals (Sweden)

    Anne-Marie Nader

    Full Text Available The cognitive profile and measured intellectual level vary according to assessment tools in children on the autism spectrum, much more so than in typically developing children. The recent inclusion of intellectual functioning in the diagnostic process for autism spectrum disorders leads to the crucial question on how to assess intelligence in autism, especially as some tests and subtests seem more sensitive to certain neurodevelopmental conditions. Our first aim was to examine the cognitive profile on the current version of the most widely used test, the Wechsler Intelligence Scales for Children (WISC-IV, for a homogenous subgroup of children on the autism spectrum, i.e. corresponding to DSM-IV diagnosis of "autism". The second aim was to compare cognitive profiles obtained on the third edition versus 4th edition of WISC, in order to verify whether the WISC-IV yields a more distinctive cognitive profile in autistic children. The third aim was to examine the impact of the WISC-IV on the cognitive profile of another subgroup, children with Asperger's Syndrome. 51 autistic, 15 Asperger and 42 typically developing children completed the WISC-IV and were individually matched to children who completed the WISC-III. Divergent WISC-IV profiles were observed despite no significant intelligence quotient difference between groups. Autistic children scored significantly higher on the Perceptual Reasoning Index than on the Verbal Comprehension Index, a discrepancy that nearly tripled in comparison to WISC-III results. Asperger children scored higher on the VCI than on other indexes, with the lowest score found on the Processing Speed Index. WISC-IV cognitive profiles were consistent with, but more pronounced than WISC-III profiles. Cognitive profiles are a valuable diagnostic tool for differential diagnosis, keeping in mind that children on the autism spectrum might be more sensitive to the choice of subtests used to assess intelligence.

  18. X-ray study of chemical bonding in actinides(IV) and lanthanides(III) hexa-cyanoferrates

    International Nuclear Information System (INIS)

    Dumas, T.

    2011-01-01

    Bimetallic cyanide molecular solids derived from Prussian blue are well known to foster long-range magnetic ordering and show an intense inter-valence charge transfer band resulting from an exchange interaction through the cyanide-bridge. For those reasons the ferrocyanide and ferricyanide building blocks have been chosen to study electronic delocalization and covalent character in actinide bonding using an experimental and theoretical approach based on X-ray absorption spectroscopy. In 2001, the actinide (IV) and early lanthanides (III) hexacyanoferrate have been found by powder X-ray diffraction to be isostructural (hexagonal, P6 3 /m group). Here, extended X-ray Absorption Fine Structure (EXAFS) at the iron K-edge and actinide L 3 -edge have been undertaken to probe the local environment of both actinides and iron cations. In an effort to describe the cyano bridge, a double edge fitting procedure including both iron and actinide edges and based on multiple scattering approach has been developed. We have also investigated the electronic properties of these molecular solids. Low energy electronic transitions have been used iron L 2,3 edge, nitrogen and carbon K-edge and also actinides N 4,5 edge to directly probe the valence molecular orbitals of the complex. Using a phenomenological approach, a clear distinctive behaviour between actinides and lanthanides has been shown. Then a theoretical approach using quantum chemistry calculation has shown more specifically the effect of covalency in the actinide-ferrocyanide bond. More specifically, π interactions were underlined by both theoretical and experimental methods. Finally, in agreement with the ionic character of the lanthanide bonding no inter-valence charge transfer has been observed in the corresponding optical spectra of these compounds. On the contrary, optical spectra for actinides adducts (except for thorium) show an intense inter-valence charge transfer band like in the transition metal cases which is

  19. Environmental education for sustainable management of the basins of the rivers Pirapó, Paranapanema III and Parapanema IV

    Directory of Open Access Journals (Sweden)

    A. T. Obara

    Full Text Available The growing concern about the quantity and quality of water has led managers and researchers from various countries to concentrate efforts in the study, planning and management of watersheds, considered appropriate units for the rational and sustainable management of water resources. This experience report presents results of the Program for Communication, Environmental Education and Social Mobilization, which is part of the project “Monitoring Network of the basins of the rivers Pirapó, Paranapanema III and Paranapanema IV – analysis and monitoring of the hydrological behavior”, developed by a multidisciplinary team of researchers and graduate students of the State University of Maringá (Paraná, Brazil. The goals of the program were: a To develop continuing education for teachers of basic education, active in state schools located in the basins studied; b To raise awareness and to promote training of various local social actors; c To produce educational and promotional materials for teachers and general community, respectively. The methodology was the action research, on the basis of collaborative work between university researchers and participants of the program. The results evidence that teachers and representatives of different social groups had a limited view of issues related to water resources of their region. Courses, workshops and itinerant exhibitions, beyond teaching aids and promotional material prepared by the group of researchers and graduate students contributed to broaden the view of social actors about watersheds to which they are part, from the perspective of an active, critical and responsible participation focused on sustainable use and management of water resources.

  20. Diversität und Konvergenz an der Wurzel: Perspektiven der Romanistik in Zeiten der Globalisierung

    Directory of Open Access Journals (Sweden)

    Bernhard Teuber

    2016-03-01

    Full Text Available I. Wieder eine Studienreform – II. Diversitäten und Konvergenz – III. Die fetten Jahre der Theorie – IV. Was in Zukunft zu tun bleibt: 1.Digital Humanities; 2.Spatial Turn; 3.Postcolonial Studies; 4.Gender Studies; 5.Ethical Turn – V. Averroes auf der Suche

  1. La(III) sorption studies on poly(dibenzo-18-crown-6) for the sequential separation of La(III), Th(IV) and U(VI) in L-arginine

    International Nuclear Information System (INIS)

    Sabale, Sandip; Nikam, Gurunath; Mohite, B.S.

    2010-01-01

    Poly(dibenzo-18-crown-6) is used as a stationary phase to study the sorption behavior of La(III) in L-arginine medium. The quantitative adsorption of La(III) was found at 1 x 10 -4 to 1 x 10 -6 M L-arginine. 1.0-8.0 M HCl, 0.5-8.0 M HBr and HClO 4 were found to be an efficient eluents for La(III). The capacity of crown polymer for La(III) was found to be 1.37±0.01 mmol/g. The tolerance limit of various cations and anions for La(III) was determined. La(III) was quantitatively separated from other metal ions in binary as well as multicomponent mixtures. The study was extended to sequential separation of La(III), U(VI) and Th(IV). The good separation yields were obtained and have good reproducibility (±2%). The method incorporates the determination of La(III) in real sample. The method is simple, rapid and selective. (author)

  2. Circulating Tumor DNA in Predicting Outcomes in Patients With Stage IV Head and Neck Cancer or Stage III-IV Non-small Cell Lung Cancer

    Science.gov (United States)

    2018-01-12

    Metastatic Squamous Neck Cancer With Occult Primary Squamous Cell Carcinoma; Salivary Gland Squamous Cell Carcinoma; Stage IIIA Non-small Cell Lung Cancer; Stage IIIB Non-small Cell Lung Cancer; Stage IV Non-small Cell Lung Cancer; Stage IV Squamous Cell Carcinoma of the Hypopharynx; Stage IV Squamous Cell Carcinoma of the Nasopharynx; Stage IVA Salivary Gland Cancer; Stage IVA Squamous Cell Carcinoma of the Larynx; Stage IVA Squamous Cell Carcinoma of the Lip and Oral Cavity; Stage IVA Squamous Cell Carcinoma of the Oropharynx; Stage IVA Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity; Stage IVA Verrucous Carcinoma of the Larynx; Stage IVA Verrucous Carcinoma of the Oral Cavity; Stage IVB Salivary Gland Cancer; Stage IVB Squamous Cell Carcinoma of the Larynx; Stage IVB Squamous Cell Carcinoma of the Lip and Oral Cavity; Stage IVB Squamous Cell Carcinoma of the Oropharynx; Stage IVB Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity; Stage IVB Verrucous Carcinoma of the Larynx; Stage IVB Verrucous Carcinoma of the Oral Cavity; Stage IVC Salivary Gland Cancer; Stage IVC Squamous Cell Carcinoma of the Larynx; Stage IVC Squamous Cell Carcinoma of the Lip and Oral Cavity; Stage IVC Squamous Cell Carcinoma of the Oropharynx; Stage IVC Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity; Stage IVC Verrucous Carcinoma of the Larynx; Stage IVC Verrucous Carcinoma of the Oral Cavity; Tongue Cancer; Untreated Metastatic Squamous Neck Cancer With Occult Primary

  3. Formation of TiO/Al2O3/C Composite in Thermal Co-decomposition of Aluminium(III) Acetylacetonate and Titanium(IV) Oxyacetylacetonate.

    Czech Academy of Sciences Publication Activity Database

    Kovářík, T.; Pokorná, Dana; Urbanová, Markéta; Bezdička, Petr; Bastl, Zdeněk; Kupčík, Jaroslav; Křenek, T.; Pola, M.; Kullová, L.; Pola, Josef

    2016-01-01

    Roč. 117, JAN 2016 (2016), s. 182-190 ISSN 0165-2370 R&D Projects: GA TA ČR TA04020860 Institutional support: RVO:67985858 ; RVO:61388980 ; RVO:61388955 Keywords : thermal co-decomposition * aluminium(III) acetylacetonate * titanium(IV) oxyacetylacetonate * titanium monoxide * alumina * Carbona Subject RIV: CF - Physical ; Theoretical Chemistry; CA - Inorganic Chemistry (UACH-T) Impact factor: 3.471, year: 2016

  4. Extraction of U(VI), Th(IV), and La(III) from acidic streams and geological samples using AXAD-16-POPDE polymer

    Energy Technology Data Exchange (ETDEWEB)

    Prabhakaran, D.; Subramanian, M.S. [Indian Institute of Technology, Department of Chemistry, Chennai 600 036 (India)

    2004-10-01

    A new chromatographic extraction method has been developed using Amberlite XAD-16 (AXAD-16) resin chemically modified with (3-hydroxyphosphinoyl-2-oxo-propyl)phosphonic acid dibenzyl ester (POPDE). The chemically modified polymer was characterized by {sup 13}C CPMAS and {sup 31}P solid-state NMR, Fourier Transform-NIR-FIR-Raman spectroscopy, CHNPS elemental analysis, and thermogravimetric analysis. Extraction studies performed for U(VI), Th(IV), and La(III) showed good distribution ratio (D) values of approximately 10{sup 3}, even under high acidities (1-4 M). Various physiochemical parameters that influence the quantitative metal ion extraction were optimized by static and dynamic methods. Data obtained from kinetic studies revealed that a time duration of {<=}10 min was sufficient to achieve complete metal ion extraction. Maximum metal sorption capacity values under optimum pH conditions were found to be 1.38, 1.33, and 0.75 mmol g{sup -1} for U(VI), Th(IV), and La(III), respectively. Interference studies performed in the presence of concentrated diverse ions and electrolyte species showed quantitative analyte recovery with lower limits of analyte detection being 10 and 20 ng cm{sup -3} for U(VI) and both Th(IV) and La(III), respectively. Sample breakthrough studies performed on the extraction column showed an enrichment factor value of 330 for U(VI) and 270 for Th(IV) and La(III), respectively. Analyte desorption was effective using 15 cm{sup 3} of 1 M (NH{sub 4}){sub 2}CO{sub 3} with >99.8% analyte recovery. The analytical applicability of the developed resin was tested with synthetic mixtures mimicking nuclear spent fuels, seawater compositions and real water and geological samples. The rsd values of the data obtained were within 5.2%, thereby reflecting the reliability of the developed method. (orig.)

  5. New lethal disease involving type I and III collagen defect resembling geroderma osteodysplastica, De Barsy syndrome, and Ehlers-Danlos syndrome IV.

    OpenAIRE

    Jukkola, A; Kauppila, S; Risteli, L; Vuopala, K; Risteli, J; Leisti, J; Pajunen, L

    1998-01-01

    We describe the clinical findings and biochemical features of a male child suffering from a so far undescribed lethal connective tissue disorder characterised by extreme hypermobility of the joints, lax skin, cataracts, severe growth retardation, and insufficient production of type I and type III procollagens. His features are compared with Ehlers-Danlos type IV, De Barsy syndrome, and geroderma osteodysplastica, as these disorders show some symptoms and signs shared with our patient. The chi...

  6. Retrograde superselective intra-arterial chemotherapy and daily concurrent radiotherapy for stage III and IV oral cancer: Analysis of therapeutic results in 112 cases

    International Nuclear Information System (INIS)

    Mitsudo, Kenji; Koizumi, Toshiyuki; Iida, Masaki; Iwai, Toshinori; Nakashima, Hideyuki; Oguri, Senri; Kioi, Mitomu; Hirota, Makoto; Koike, Izumi; Hata, Masaharu; Tohnai, Iwai

    2014-01-01

    Purpose: To evaluate the therapeutic results and rate of organ preservation in patients with stage III or IV oral cancer treated with retrograde superselective intra-arterial chemotherapy and daily concurrent radiotherapy. Materials and methods: One hundred and twelve patients with stage III and IV oral squamous cell carcinoma underwent intra-arterial chemoradiotherapy. Catheterization from the superficial temporal and occipital arteries was performed. Treatment consisted of superselective intra-arterial chemotherapy (docetaxel, total 60 mg/m 2 , cisplatin, total 150 mg/m 2 ) and daily concurrent radiotherapy (total of 60 Gy) for 6 weeks. Results: The median follow-up for all patients was 46.2 months (range, 10–76 months). After intra-arterial chemoradiotherapy, primary site complete response was achieved in 98 (87.5%) of 112 cases. Five-year survival and local control rates were 71.3% and 79.3%, respectively. Grade 3 or 4 toxicities included mucositis in 92.0%, neutropenia in 30.4%, dermatitis in 28.6%, anemia in 26.8%, and thrombocytopenia in 7.1% of patients. Grade 3 toxicities included dysphagia in 72.3%, nausea/vomiting in 21.4%, fever in 8.0%, and renal failure in 0.9% of patients. Conclusion: Retrograde superselective intra-arterial chemotherapy and daily concurrent radiotherapy for stage III and IV oral cancer provided good overall survival and local control

  7. WISC-IV Profiles in Children with Traumatic Brain Injury: Similarities to and Differences from the WISC-III

    Science.gov (United States)

    Allen, Daniel N.; Thaler, Nicholas S.; Donohue, Brad; Mayfield, Joan

    2010-01-01

    The Wechsler Intelligence Scale for Children--Fourth Edition (WISC-IV; D. Wechsler, 2003a) is often utilized to assess children with traumatic brain injury (TBI), although little information is available regarding its psychometric properties in these children. The current study examined WISC-IV performance in a sample of 61 children with TBI. As…

  8. Differentiation of grade II/III and grade IV glioma by combining ''T1 contrast-enhanced brain perfusion imaging'' and susceptibility-weighted quantitative imaging

    International Nuclear Information System (INIS)

    Saini, Jitender; Gupta, Pradeep Kumar; Gupta, Rakesh Kumar; Sahoo, Prativa; Singh, Anup; Patir, Rana; Ahlawat, Suneeta; Beniwal, Manish; Thennarasu, K.; Santosh, Vani

    2018-01-01

    MRI is a useful method for discriminating low- and high-grade glioma using perfusion MRI and susceptibility-weighted imaging (SWI). The purpose of this study is to evaluate the usefulness of T1-perfusion MRI and SWI in discriminating among grade II, III, and IV gliomas. T1-perfusion MRI was used to measure relative cerebral blood volume (rCBV) in 129 patients with glioma (70 grade IV, 33 grade III, and 26 grade II tumors). SWI was also used to measure the intratumoral susceptibility signal intensity (ITSS) scores for each tumor in these patients. rCBV and ITSS values were compared to seek differences between grade II vs. grade III, grade III vs. grade IV, and grade III+II vs. grade IV tumors. Significant differences in rCBV values of the three grades of the tumors were noted and pairwise comparisons showed significantly higher rCBV values in grade IV tumors as compared to grade III tumors, and similarly increased rCBV was seen in the grade III tumors as compared to grade II tumors (p < 0.001). Grade IV gliomas showed significantly higher ITSS scores on SWI as compared to grade III tumors (p < 0.001) whereas insignificant difference was seen on comparing ITSS scores of grade III with grade II tumors. Combining the rCBV and ITSS resulted in significant improvement in the discrimination of grade III from grade IV tumors. The combination of rCBV values derived from T1-perfusion MRI and SWI derived ITSS scores improves the diagnostic accuracy for discrimination of grade III from grade IV gliomas. (orig.)

  9. Differentiation of grade II/III and grade IV glioma by combining ''T1 contrast-enhanced brain perfusion imaging'' and susceptibility-weighted quantitative imaging

    Energy Technology Data Exchange (ETDEWEB)

    Saini, Jitender [National Institute of Mental Health and Neurosciences, Neuroimaging and Interventional Radiology, Bangalore (India); Gupta, Pradeep Kumar; Gupta, Rakesh Kumar [Fortis Memorial Research Institute, Department of Radiology and Imaging, Gurugram (India); Sahoo, Prativa [Philips Health System, Philips India Limited, Bangalore (India); Beckman Research Institute, Mathematical Oncology, Duarte, CA (United States); Singh, Anup [Indian Institute of Technology Delhi, Center for Biomedical Engineering, Delhi (India); Patir, Rana [Fortis Memorial Research Institute, Department of Neurosurgery, Gurugram (India); Ahlawat, Suneeta [Fortis Memorial Research Institute, SRL Diagnostics, Gurugram (India); Beniwal, Manish [National Institute of Mental Health and Neurosciences, Department of Neurosurgery, Bangalore (India); Thennarasu, K. [National Institute of Mental Health and Neurosciences, Department of Biostatistics, Bangalore (India); Santosh, Vani [National Institute of Mental Health and Neurosciences, Department of Neuropathology, Bangalore (India)

    2018-01-15

    MRI is a useful method for discriminating low- and high-grade glioma using perfusion MRI and susceptibility-weighted imaging (SWI). The purpose of this study is to evaluate the usefulness of T1-perfusion MRI and SWI in discriminating among grade II, III, and IV gliomas. T1-perfusion MRI was used to measure relative cerebral blood volume (rCBV) in 129 patients with glioma (70 grade IV, 33 grade III, and 26 grade II tumors). SWI was also used to measure the intratumoral susceptibility signal intensity (ITSS) scores for each tumor in these patients. rCBV and ITSS values were compared to seek differences between grade II vs. grade III, grade III vs. grade IV, and grade III+II vs. grade IV tumors. Significant differences in rCBV values of the three grades of the tumors were noted and pairwise comparisons showed significantly higher rCBV values in grade IV tumors as compared to grade III tumors, and similarly increased rCBV was seen in the grade III tumors as compared to grade II tumors (p < 0.001). Grade IV gliomas showed significantly higher ITSS scores on SWI as compared to grade III tumors (p < 0.001) whereas insignificant difference was seen on comparing ITSS scores of grade III with grade II tumors. Combining the rCBV and ITSS resulted in significant improvement in the discrimination of grade III from grade IV tumors. The combination of rCBV values derived from T1-perfusion MRI and SWI derived ITSS scores improves the diagnostic accuracy for discrimination of grade III from grade IV gliomas. (orig.)

  10. Characterization of a tricationic trigonal bipyramidal iron(IV) cyanide complex, with a very high reduction potential, and its iron(II) and iron(III) congeners.

    Science.gov (United States)

    England, Jason; Farquhar, Erik R; Guo, Yisong; Cranswick, Matthew A; Ray, Kallol; Münck, Eckard; Que, Lawrence

    2011-04-04

    Currently, there are only a handful of synthetic S = 2 oxoiron(IV) complexes. These serve as models for the high-spin (S = 2) oxoiron(IV) species that have been postulated, and confirmed in several cases, as key intermediates in the catalytic cycles of a variety of nonheme oxygen activating enzymes. The trigonal bipyramidal complex [Fe(IV)(O)(TMG(3)tren)](2+) (1) was both the first S = 2 oxoiron(IV) model complex to be generated in high yield and the first to be crystallographically characterized. In this study, we demonstrate that the TMG(3)tren ligand is also capable of supporting a tricationic cyanoiron(IV) unit, [Fe(IV)(CN)(TMG(3)tren)](3+) (4). This complex was generated by electrolytic oxidation of the high-spin (S = 2) iron(II) complex [Fe(II)(CN)(TMG(3)tren)](+) (2), via the S = 5/2 complex [Fe(III)(CN)(TMG(3)tren)](2+) (3), the progress of which was conveniently monitored by using UV-vis spectroscopy to follow the growth of bathochromically shifting ligand-to-metal charge transfer (LMCT) bands. A combination of X-ray absorption spectroscopy (XAS), Mössbauer and NMR spectroscopies was used to establish that 4 has a S = 0 iron(IV) center. Consistent with its diamagnetic iron(IV) ground state, extended X-ray absorption fine structure (EXAFS) analysis of 4 indicated a significant contraction of the iron-donor atom bond lengths, relative to those of the crystallographically characterized complexes 2 and 3. Notably, 4 has an Fe(IV/III) reduction potential of ∼1.4 V vs Fc(+/o), the highest value yet observed for a monoiron complex. The relatively high stability of 4 (t(1/2) in CD(3)CN solution containing 0.1 M KPF(6) at 25 °C ≈ 15 min), as reflected by its high-yield accumulation via slow bulk electrolysis and amenability to (13)C NMR at -40 °C, highlights the ability of the sterically protecting, highly basic peralkylguanidyl donors of the TMG(3)tren ligand to support highly charged high-valent complexes.

  11. MODERATE C IV ABSORBER SYSTEMS REQUIRE 1012 M☉ DARK MATTER HALOS AT z ∼ 2.3: A CROSS-CORRELATION STUDY OF C IV ABSORBER SYSTEMS AND QUASARS IN SDSS-III BOSS DR9

    International Nuclear Information System (INIS)

    Vikas, Shailendra; Wood-Vasey, W. Michael; Lundgren, Britt; Ross, Nicholas P.; Myers, Adam D.; AlSayyad, Yusra; York, Donald G.; Schneider, Donald P.; Brinkmann, J.; Bizyaev, Dmitry; Brewington, Howard; Malanushenko, Elena; Malanushenko, Viktor; Oravetz, Daniel; Pan, Kaike; Snedden, Stephanie; Ge, Jian; Muna, Demitri; Pâris, Isabelle; Petitjean, Patrick

    2013-01-01

    We measure the two-point cross-correlation function of C IV absorber systems and quasars, using spectroscopic data from the Sloan Digital Sky Survey III Baryon Oscillation Spectroscopic Survey (BOSS; Data Release 9). The 19,701 quasars and 6149 C IV ''moderate'' absorbers, 0.28 Å 2 and represent a factor of two increase in sample size over previous investigations. We find a correlation scale length and slope of the redshift-space cross-correlation function of s 0 = 8.46 ± 1.24 Mpc, γ = 1.68 ± 0.19, in the redshift-space range 10 0 = 7.76 ± 2.80 Mpc, γ = 1.74 ± 0.21. We measure the combined quasar and C IV bias to be b QSO b C I V = 8.81 ± 2.28. Using an estimate of b QSO from the quasar auto-correlation function we find b CIV = 2.38 ± 0.62. This b CIV implies that EW > 0.28 Å C IV absorbers at z ∼ 2.3 are typically found in dark matter halos that have masses ≥10 11.3 -10 13.4 M ☉ at that redshift. The complete BOSS sample will triple the number of both quasars and absorption systems and increase the power of this cross-correlation measurement by a factor of two.

  12. Factors associated with a poor prognosis for the IVF-ICSI live birth rate in women with rAFS stage III and IV endometriosis.

    Science.gov (United States)

    Roux, Pauline; Perrin, Jeanne; Mancini, Julien; Agostini, Aubert; Boubli, Léon; Courbiere, Blandine

    2017-07-01

    To assess the factors associated with a poor prognosis for a cumulative IVF live birth rate (LBR) in women with stage III and IV endometriosis according to the revised classification of the American Fertility Society (rAFS). A retrospective cohort study was conducted between January 1, 2010, and December 31, 2014, in our Reproductive Medicine Center. We analyzed different factors associated with a poor prognosis for a cumulative IVF LBR in women with rAFS stage III and IV endometriosis. A total of 101 patients were included, representing 232 IVF-ICSI cycles and 212 embryo transfers. The primary endpoint was the cumulative LBR per cycle and per patient. The cumulative LBR per cycle was 14.7% (n = 34) and that per patient was 31.7% (n = 32). The cumulative LBR was significantly decreased by active smoking [ adj OR = 3.4, 95% CI (1.12-10.60), p = 0.031], poor ovarian response (POR) according to the Bologna criteria [ adj OR = 11.5, 95% CI (1.37-96.83), p = 0.024], and rAFS stage IV [ adj OR = 3.2, 95% CI (1.13-8.95), p = 0.024]. The cumulative LBR per women was 59.4% without factors associated with a poor prognosis and 25.6% in the case of one factor, and it decreased to 7.7% in the case of two or three factors (p endometriosis had a negative impact on the IVF-ICSI cumulative LBR for women with rAFS stage III and IV endometriosis. Because smoking dramatically decreases the LBR with endometriosis, stopping smoking before IVF-ICSI should be strongly advised.

  13. Organic contaminants degradation from the S(IV) autoxidation process catalyzed by ferrous-manganous ions: A noticeable Mn(III) oxidation process.

    Science.gov (United States)

    Zhang, Jiaming; Ma, Jun; Song, Haoran; Sun, Shaofang; Zhang, Zhongxiang; Yang, Tao

    2018-04-15

    Remarkable atrazine degradation in the S(IV) autoxidation process catalyzed by Fe 2+ -Mn 2+ (Fe 2+ /Mn 2+ /sulfite) was demonstrated in this study. Competitive kinetic experiments, alcohol inhibiting methods and electron spin resonance (ESR) experiments proved that sulfur radicals were not the major oxidation species. Mn(III) was demonstrated to be the primary active species in the Fe 2+ /Mn 2+ /sulfite process based on the comparison of oxidation selectivity. Moreover, the inhibiting effect of the Mn(III) hydrolysis and the S(IV) autoxidation in the presence of organic contaminants indicated the existence of three Mn(III) consumption routes in the Fe 2+ /Mn 2+ /sulfite process. The absence of hydroxyl radical and sulfate radical was interpreted by the competitive dynamics method. The oxidation capacity of the Fe 2+ /Mn 2+ /sulfite was independent of the initial pH (4.0-6.0) because the fast decay of S(IV) decreased initial pH below 4.0 rapidly. The rate of ATZ degradation was independent of the dissolved oxygen (DO) because that the major DO consumption process was not the rate determining step during the production of SO 5 •- . Phosphate and bicarbonate were confirmed to have greater inhibitory effects than other environmental factors because of their strong pH buffering capacity and complexing capacity for Fe 3+ . The proposed acetylation degradation pathway of ATZ showed the application of the Fe 2+ /Mn 2+ /sulfite process in the research of contaminants degradation pathways. This work investigated the characteristics of the Fe 2+ /Mn 2+ /sulfite process in the presence of organic contaminants, which might promote the development of Mn(III) oxidation technology. Copyright © 2018. Published by Elsevier Ltd.

  14. Phosphorylation of ERK in neurokinin 1 receptor-expressing neurons in laminae III and IV of the rat spinal dorsal horn following noxious stimulation

    Directory of Open Access Journals (Sweden)

    Watanabe Masahiko

    2007-02-01

    Full Text Available Abstract Background There is a population of large neurons with cell bodies in laminae III and IV of the spinal dorsal horn which express the neurokinin 1 receptor (NK1r and have dendrites that enter the superficial laminae. Although it has been shown that these are all projection neurons and that they are innervated by substance P-containing (nociceptive primary afferents, we know little about their responses to noxious stimuli. In this study we have looked for phosphorylation of extracellular signal-regulated kinases (ERKs in these neurons in response to different types of noxious stimulus applied to one hindlimb of anaesthetised rats. The stimuli were mechanical (repeated pinching, thermal (immersion in water at 52°C or chemical (injection of 2% formaldehyde. Results Five minutes after each type of stimulus we observed numerous cells with phosphorylated ERK (pERK in laminae I and IIo, together with scattered positive cells in deeper laminae. We found that virtually all of the lamina III/IV NK1r-immunoreactive neurons contained pERK after each of these stimuli and that in the great majority of cases there was internalisation of the NK1r on the dorsal dendrites of these cells. In addition, we also saw neurons in lamina III that were pERK-positive but lacked the NK1r, and these were particularly evident in animals that had had the pinch stimulus. Conclusion Our results demonstrate that lamina III/IV NK1r-immunoreactive neurons show receptor internalisation and ERK phosphorylation after mechanical, thermal or chemical noxious stimuli.

  15. Characterization of the chemical composition of PM2.5 emitted from on-road China III and China IV diesel trucks in Beijing, China.

    Science.gov (United States)

    Wu, Bobo; Shen, Xianbao; Cao, Xinyue; Yao, Zhiliang; Wu, Yunong

    2016-05-01

    The composition of diesel exhaust fine particulate matter (PM2.5) is of growing interest because of its impacts on health and climatic factors and its application in source apportionment and aerosol modeling. We characterized the detailed chemical composition of the PM2.5, including the organic carbon (OC), elemental carbon (EC), water-soluble ions (WSIs), and elemental contents, emitted from China III and China IV diesel trucks (nine each) based on real-world measurements in Beijing using a portable emissions measurement system (PEMS). Carbonaceous compounds were the dominant components (totaling approximately 87%) of the PM2.5, similar to the results (greater than 80% of the PM2.5) of our previous study of on-road China III diesel trucks. In general, the amounts of individual component groups (carbonaceous compounds, WSIs, and elements) and PM2.5 emissions for China IV diesel trucks were lower than those of China III diesel trucks of the same size, except for the WSIs and elements for the light- and medium-duty diesel trucks. The EC/OC mass ratios were strongly dependent on the emission standards, and the ratios of China IV diesel trucks were higher than those of China III diesel trucks of the same size. The chemical species in the PM2.5 were significantly affected by the driving conditions. Overall, the emission factors (EFs) of the PM2.5 and OC under non-highway (NHW) driving conditions were higher than those under highway (HW) driving conditions, and the EC/OC mass ratios presented an increasing trend, with decreasing OC/PM2.5 and increasing EC/PM2.5 from NHW to HW driving conditions; similar trends were reported in our previous study. In addition, Pearson's correlation coefficients among the PM2.5 species were analyzed to determine the relationships among the various chemical components. Copyright © 2016 Elsevier B.V. All rights reserved.

  16. Silicon-Based Integration of Groups III, IV, V Chemical Vapor Depositions in High-Quality Photodiodes

    NARCIS (Netherlands)

    Sammak, A.

    2012-01-01

    Heterogeneous integration of III-V semiconductors with silicon (Si) technology is an interesting approach to utilize the advantages of both high-speed photonic and electronic properties. The work presented in this thesis is initiated by this major goal of merging III-V semiconductor technology with

  17. Is coracoclavicular stabilisation alone sufficient for the endoscopic treatment of severe acromioclavicular joint dislocation (Rockwood types III, IV, and V)?

    Science.gov (United States)

    Barth, J; Duparc, F; Andrieu, K; Duport, M; Toussaint, B; Bertiaux, S; Clavert, P; Gastaud, O; Brassart, N; Beaudouin, E; De Mourgues, P; Berne, D; Bahurel, J; Najihi, N; Boyer, P; Faivre, B; Meyer, A; Nourissat, G; Poulain, S; Bruchou, F; Ménard, J F

    2015-12-01

    The primary objective was to evaluate correlations linking anatomical to functional outcomes after endoscopically assisted repair of acute acromioclavicular joint dislocation (ACJD). Combined acromioclavicular and coracoclavicular stabilisation improves radiological outcomes compared to coracoclavicular stabilisation alone. A prospective multicentre study was performed. Clinical outcome measures were pain intensity on a visual analogue scale (VAS), subjective functional impairment (QuickDASH score), and Constant's score. Anatomical outcomes were assessed on standard radiographs (anteroposterior view of the acromioclavicular girdle and bilateral axillary views) obtained preoperatively and postoperatively and on postoperative dynamic radiographs taken as described by Tauber et al. Of 116 patients with acute ACJD included in the study, 48% had type III, 30% type IV, and 22% type V ACJD according to the Rockwood classification. Coracoclavicular stabilisation was achieved using a double endobutton in 93% of patients, and concomitant acromioclavicular stabilisation was performed in 50% of patients. The objective functional outcome was good, with an unweighted Constant's score ≥ 85/100 and a subjective QuickDASH functional disability score ≤ 10 in 75% of patients. The radiographic analysis showed significant improvements from the preoperative to the 1-year postoperative values in the vertical plane (decrease in the coracoclavicular ratio from 214 to 128%, p=10(-6)) and in the horizontal plane (decrease in posterior displacement from 4 to 0mm, p=5×10(-5)). The anatomical outcome correlated significantly with the functional outcome (absolute R value=0.19 and p=0.045). We found no statistically significant differences across the various types of constructs used. Intra-operative control of the acromioclavicular joint did not improve the result. Implantation of a biological graft significantly improved both the anatomical outcome in the vertical plane (p=0.04) and

  18. Nosologic Comparisons of DSM-IV and DSM-5 Alcohol and Drug Use Disorders: Results From the National Epidemiologic Survey on Alcohol and Related Conditions–III

    Science.gov (United States)

    Goldstein, Risë B.; Chou, S. Patricia; Smith, Sharon M.; Jung, Jeesun; Zhang, Haitao; Saha, Tulshi D.; Pickering, Roger P.; June Ruan, W.; Huang, Boji; Grant, Bridget F.

    2015-01-01

    Objective: The purpose of this study was to examine prevalences and concordances between Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV), and Fifth Edition (DSM-5) substance use disorders (SUDs) in a newly completed U.S. epidemiologic survey. Method: The National Epidemiologic Survey on Alcohol and Related Conditions–III surveyed 36,309 civilian, noninstitutionalized adults. SUDs were assessed using the Alcohol Use Disorder and Associated Disabilities Interview Schedule–5. Concordances between DSM-IV and DSM-5 disorders were assessed using kappa statistics. Results: Prevalences of past-year substance-specific DSM-5 disorders (2+ criteria) were modestly higher than those of DSM-IV dependence and abuse combined for alcohol, sedatives/tranquilizers, opioids, and heroin, but lower for cannabis, cocaine, and stimulants. Lifetime prevalences were lower under DSM-5. Prevalences were similar between moderate to severe (4+ criteria) DSM-5 disorders and dependence, whereas prevalences of DSM-5 disorders at 3+ criteria (DSM-5 [3+]) were higher, particularly for cannabis. Past-year concordances were excellent for DSM-IV dependence and abuse combined versus any DSM-5 and DSM-IV dependence versus DSM-5 moderate to severe disorders; lifetime concordances were fair to excellent. Past-year concordances between DSM-IV and DSM-5 (3+) were generally similar to or modestly higher than those with any DSM-5 disorder; lifetime concordances were mostly lower. Conclusions: Findings are consistent with those informing the development of DSM-5. Future research should examine differences in patterns between past-year and lifetime disorders, particularly for cannabis. Other questions warranting investigation include whether different combinations of the same numbers of criteria carry different clinical or nosologic implications, whether changes innosology yield changes in treatment demand, and whether changes in characteristics of individuals with DSM-5 SUDs

  19. Liquid chromatographic studies on the behaviour of Pu(III), Pu(IV) and Pu(VI) on a RP stationary phase in presence of α-hydroxyisobutyric acid as a chelating agent

    Energy Technology Data Exchange (ETDEWEB)

    Jaison, P.G.; Kumar, Pranaw; Telmore, Vijay M. [Bhabha Atomic Research Centre, Mumbai (India). Fuel Chemistry Division

    2017-06-01

    Since plutonium possesses multiple oxidation states which can coexist in solution, a method for the identification of these oxidation states is important to understand its chemical processes. Liquid chromatographic studies were carried out to compare the chromatographic behaviour of different oxidation states of Pu in presence of the eluent, α-hydroxyisobutyric acid (HIBA). The three oxidation states of Pu viz. Pu(III), Pu(IV) and Pu(VI) were separated under optimised conditions. It was seen that the presence of the complexing agent influences the equilibrium of Pu(III)/(IV) as well as Pu(IV)/(VI) systems. Pu(III) to Pu(IV) conversion was found to be enhanced by high pH and concentration of HIBA whereas a relatively low pH and high concentration of HIBA promotes the conversion of Pu(VI) to Pu(IV).

  20. DAPPA grafted polymer: an efficient solid phase extractant for U(VI), Th(IV) and La(III) from acidic waste streams and environmental samples.

    Science.gov (United States)

    Raju, Ch Siva Kesava; Subramanian, M S

    2005-07-15

    A new class of polymeric resin has been synthesized by grafting Merrifield chloromethylated resin with (dimethyl amino-phosphono-methyl)-phosphonic acid (MCM-DAPPA), for the preconcentration of U(VI), Th(IV) and La(III) from both acidic wastes and environmental samples. The various chemical modification steps involved during grafting process are characterized by FT-IR spectroscopy, (31)P and (13)C-CPMAS (cross-polarized magic angle spin) NMR spectroscopy and CHNS/O elemental analysis. The water regain capacity data for the grafted polymer are obtained from thermo-gravimetric (TG) analysis. The influence of various physico-chemical parameters during the quantitative extraction of metal ions by the resin phase are studied and optimized by both static and dynamic methods. The significant feature of this grafted polymer is its ability to extract both actinides and lanthanides from high-level acidities as well as from near neutral conditions. The resin shows very high sorption capacity values of 2.02, 0.89 and 0.54mmolg(-1) for U(VI), 1.98, 0.63 and 0.42mmolg(-1) for Th(IV) and 1.22, 0.39 and 0.39mmolg(-1) for La(III) under optimum pH, HNO(3) and HCl concentration, respectively. The grafted polymer shows faster phase exchange kinetics (99.5% recovery using 1M (NH(4))(2)CO(3), as eluent. The developed grafted resin has been successfully applied in extracting Th(IV) from high matrix monazite sand, U(VI) from sea water and also U(VI) and Th(IV) from simulated nuclear spent fuel mixtures. The analytical data obtained from triplicate measurements are within 3.9% R.S.D. reflecting the reproducibility and reliability of the developed method.

  1. Radiochemotherapy with gemcitabine and cisplatin in pancreatic cancer - feasible and effective; Radiochemotherapie mit Gemcitabin und Cisplatin bei Pankreaskarzinom - durchfuehrbar und effektiv

    Energy Technology Data Exchange (ETDEWEB)

    Wilkowski, R.; Thoma, M.; Duehmke, E. [Klinik und Poliklinik fuer Strahlentherapie, Klinikum Grosshadern, Ludwig-Maximilians-Univ. Muenchen (Germany); Heinemann, V. [Medizinische Klinik III, Klinikum Grosshadern, Ludwig-Maximilians-Univ. Muenchen (Germany); Rau, H.G. [Abt. fuer Viszeralchirurgie, Klinikum Dachau (Germany); Wagner, A. [Medizinische Klinik II, Klinikum Grosshadern, Ludwig-Maximilians-Univ. Muenchen (Germany); Stoffregen, C. [Lilly Deutschland GmbH, Bad Homburg (Germany)

    2003-02-01

    traten keine gastrointestinalen Toxizitaeten WHO-III oder -IV auf. Die Haematotoxizitaet war die gravierendste Nebenwirkung (Leukopenie Grad III und IV bei 29 und fuenf Patienten, Thrombopenie Grad III und IV bei 21 und acht Patienten), jedoch nur mit geringer klinischer Relevanz (ein neutropenischer Infekt, eine Hb-wirksame Epistaxis). Schlussfolgerung: Das von uns vorgestellte Therapieschema mit Gemcitabin und Cisplatin sequentiell und simultan zur Bestrahlung ist mit vertretbaren Nebenwirkungen durchfuehrbar. Zur Evaluation der hoffnungsvollen Remissions- und Ueberlebensraten sind randomisierte Studien zur neoadjuvanten und primaeren Radiochemotherapie gestartet. (orig.)

  2. Bases biológicas para la evaluación y manejo de metapoblaciones de loco en la III y IV Regiones

    OpenAIRE

    González, J.; Tapia, C.; Wilson, A.; Stotz, W.; Orensanz, J.M.; Parma, A.M.; Valero, J.; Catrilao, M.; Garrido, J.

    2005-01-01

    En la III y IV Regiones las áreas de manejo y explotación de recursos bentónicos (AMERB) se han establecido como la principal herramienta de manejo del recurso loco (Concholepas concholepas). Sin embargo, su aplicabilidad para la administración y aporte en términos del desarrollo sustentable, aunque sugerentes, requieren de una evaluación objetiva, en cuanto al manejo de carácter discreto que se ha establecido para cada AMERB, desconociendo la eventual interacción espacial de las mismas. En e...

  3. Incidence and specificity of antibodies to types I, II, III, IV, and V collagen in rheumatoid arthritis and other rheumatic diseases as measured by 125I-radioimmunoassay

    International Nuclear Information System (INIS)

    Stuart, J.M.; Huffstutter, E.H.; Townes, A.S.; Kang, A.H.

    1983-01-01

    Antibodies to human native and denatured types I, II, III, IV, and V collagens were measured using 125I-radioimmunoassay. Mean levels of binding by sera from 30 rheumatoid arthritis patients were significantly higher than those from 20 normal subjects against all of the collagens tested. The relative antibody concentration was higher in synovial fluid than in simultaneously obtained serum. Many patients with gout or various other rheumatic diseases also had detectable anticollagen antibodies. With a few notable exceptions, the majority of the reactivity detected in all patient groups was directed against covalent structural determinants present on all of the denatured collagens, suggesting a secondary reaction to tissue injury

  4. Mutual solubility between hexane and three-n-butyl phosphate solvates of lanthanide(III) and thorium(IV) nitrates at various temperatures

    International Nuclear Information System (INIS)

    Keskinov, V.A.; Lishuk, V.V.; Pyartman, A.K.

    2007-01-01

    Phase diagrams of binary liquid systems of hexane-rare earth(III) nitrates solvates (rare earth - neodymium, gadolinium, yttrium, ytterbium, lutetium) and thorium(IV) with tri-n-butylphosphate are studied at different temperatures. Phase diagrams of binary systems consist of fields of homogeneous solutions and field of stratification into two liquid phases (I, II): phase I is enriched by hexane, and phase II - [Ln(NO 3 ) 3 (TBP) 3 ] (Ln=Nd, Gd, Y, Yb and Lu) or [Th(NO 3 ) 4 (TBP) 2 ]. Field of stratification into two liquid phases are decreased with growing temperature in binary systems [ru

  5. A simple thermometric technique for reaction-rate determination of inorganic species, based on the iodide-catalysed cerium(IV)-arsenic(III) reaction.

    Science.gov (United States)

    Grases, F; Forteza, R; March, J G; Cerda, V

    1985-02-01

    A very simple reaction-rate thermometric technique is used for determination of iodide (5-20 ng ml ), based on its catalytic action on the cerium(IV)-arsenic(III) reaction, and for determination of mercury(II) (1.5-10 ng ml ) and silver(I) (2-10 ng ml ), based on their inhibitory effect on this reaction. The reaction is followed by measuring the rate of temperature increase. The method suffers from very few interferences and is applied to determination of iodide in biological and inorganic samples, and Hg(II) and Ag(I) in pharmaceutical products.

  6. Calculation of activity concentration and dose rates from online radioactivity measurement in primary coolant channel of TAPS-III and IV

    International Nuclear Information System (INIS)

    Chaudhury, Sanhita; Agarwal, Chhavi; Goswami, A.; Mhatre, Amol; Chaturvedi, T.P.; Tawde, N.; Gathibandhe, Manohar; Dash, S.C.

    2011-05-01

    Radioactivity measurement using CdZnTe detector and dose measurement using teletector were done at several locations of primary heat transport (PHT) system of the Tarapur Atomic Power Station-III and IV reactor during shut down as well as operating condition of the reactors. The detector efficiency for the required counting geometry was simulated using MCNP code. Using this simulated efficiency and the experimental count rate (cps), the activity concentrations (Bq/mL) of different radionuclides in coolant water were calculated. The dose rates for the counted locations were also simulated using Monte Carlo code and it matched well with the experimentally obtained dose rate. (author)

  7. The study of 3s3p4 configuration in the P-Sequence, Co X III - Ni X IV, by laser-produced plasmas

    International Nuclear Information System (INIS)

    Borges, F.O.; Cavalcanti, G.H.; Farias, E.E.; Trigueiros, A.G.

    2007-01-01

    Wavelengths from radiation of plasmas produced by a Nd:YAG/glass laser focused on target of Co and Ni have been recorded photographically in the region 240-600 A with a 3m normal incidence spectrograph. For this sequence (Co X III and Ni X IV) we have identified 13 new lines belonging to the array 3s 2 3p 3 -3s3p 4 and derived 7 new levels for the 3s3p 4 configuration. The classification was established by comparison of the relative intensities for the lines along the isoelectronic sequence, extrapolation, and Hartree-Fock calculation. (author)

  8. Evaluación de la calidad de los consentimientos informados de los servicios de los hospitales de nivel III-IV de Lima y Callao.

    Directory of Open Access Journals (Sweden)

    Germán Málaga Rodriguez

    2007-07-01

    Full Text Available Objetivo: Evaluar la calidad de los formatos de consentimiento médico informado para cirugía mayor utilizados en los diferentes servicios de los hospitales de nivel III-IV de Lima y Callao. Material y métodos: Estudio descriptivo, cualitativo y transversal. Obtenidos los formatos de consentimiento médico informado para cirugía mayor utilizados en los servicios de los hospitales de nivel III - IV del Lima y Callao; se evaluó su calidad contrastándolos con una plantilla de requisitos elaborada con base en la literatura. Resultados: De los 28 formatos de consentimiento médico informado para cirugía mayor de 20 hospitales de nivel III-IV en Lima y Callao evaluados, 14,2% cumplían con más del 75% de los requisitos; 57,2%, con 75-50%; y 28,6%, con menos del 50%. Los requisitos acerca del procedimiento y sus características estuvieron ausentes en más del 75% de los formatos. Los formatos de los hospitales pertenecientes al Ministerio de Salud (MINSA cumplieron en promedio con 12 requisitos (rango 4-21; los de las Fuerzas Armadas (FFAA, con 17 (rango 14-18; y los del EsSALUD, con 18 (rango16-22. Conclusiones: Los formatos de CMI de los servicios de los hospitales de nivel III-IV de Lima Callao evaluados no presentan uniformidad entre ellos y no garantizan que el paciente ha sido completa y correctamente informado ni que se ha respetado su autonomía en la toma de decisión. Los formatos de CMI del MINSA fueron los más deficientes y los que presentaron mayor variabilidad de calidad. Se propone un modelo de CMI para ser tomado como base por los diferentes servicios de hospitales para la elaboración de futuros CMI.(Rev Med Hered 2007;18:136-142

  9. National Comorbidity Survey Replication Adolescent Supplement (NCS-A): III. Concordance of DSM-IV/CIDI Diagnoses with Clinical Reassessments

    Science.gov (United States)

    Kessler, Ronald C.; Avenevoli, Shelli; Green, Jennifer; Gruber, Michael J.; Guyer, Margaret; He, Yulei; Jin, Robert; Kaufman, Joan; Sampson, Nancy A.; Zaslavsky, Alan M.; Merikangas, Kathleen R.

    2009-01-01

    The Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) diagnoses that was based on the World Health Organization's Composite International Diagnostic Interview (CIDI) and implemented in the National comorbidity survey replication adolescent supplement is found to have good individual-level concordance with diagnosis based on blinded…

  10. Separation of Cr(III) from Cr(VI) by Triton X-100 Cerium (Iv) Phosphate as a Surface Active Ion Exchanger

    International Nuclear Information System (INIS)

    El-Azony, K.M.; Ismail Aydia, M.; El-Mohty, A.A.

    2010-01-01

    A new and simple high-performance liquid chromatography (HPLC) method with ultraviolet (UV) detection has been developed for the determination of both Cr (III) and Cr (VI) ions. Chromium species were determined by HPLC using a stationary phase consisting of a reversed phase column (Nucleosil phenyl column; 250 mm x 4.6 mm,5 μm), and a mobile phase consisting of a mixture of methanol: water(70 : 30 v/v), in which the complexing agent di-(2-ethylhexyl) phosphoric acid (DEHPA) was dissolved. The UV detection was carried out at wavelength 650 nm. Separation of Cr (III) from Cr (VI) on Triton X-100 cerium(IV) phosphate(TX-100 CeP) as a surface active ion exchanger was investigated. TX-100 CeP has been synthesized, characterized using IR, X-Ray, TGA/DTA and elemental analysis. The ion exchange capacity and chemical stability in different HCl concentration have been studied

  11. Activation of the CXCR3 chemokine receptor through anchoring of a small molecule chelator ligand between TM-III, -IV, and -VI

    DEFF Research Database (Denmark)

    Rosenkilde, Mette M; Andersen, Michael B; Nygaard, Rie

    2006-01-01

    modeling and molecular simulations combined with mutational analysis indicated that the metal ion site-anchored chelators act as agonists by establishing an aromatic-aromatic, second-site interaction with TyrVI:16 on the inner face of TM-VI. It is noteworthy that this interaction required......Seven transmembrane segment (7TM) receptors are activated through a common, still rather unclear molecular mechanism by a variety of chemical messengers ranging from monoamines to large proteins. By introducing a His residue at position III:05 in the CXCR3 receptor a metal ion site was built...... between the extracellular ends of transmembrane (TM) III and TM-IV to anchor aromatic chelators at a location corresponding to the presumed binding pocket for adrenergic receptor agonists. In this construct, free metal ions had no agonistic effect in accordance with the optimal geometry of the metal ion...

  12. Path integral approach for superintegrable potentials on spaces of non-constant curvature. Pt. 2. Darboux spaces D{sub III} and D{sub IV}

    Energy Technology Data Exchange (ETDEWEB)

    Grosche, C. [Hamburg Univ. (Germany). 2. Inst. fuer Theoretische Physik; Pogosyan, G.S. [Joint Inst. of Nuclear Research, Moscow (Russian Federation). Bogoliubov Lab. of Theoretical Physics]|[Guadalajara Univ., Jalisco (Mexico). Dept. de Matematicas CUCEI; Sissakian, A.N. [Joint Inst. of Nuclear Research, Moscow (Russian Federation). Bogoliubov Lab. of Theoretical Physics

    2006-08-15

    This is the second paper on the path integral approach of superintegrable systems on Darboux spaces, spaces of non-constant curvature. We analyze in the spaces D{sub III} and D{sub IV} five respectively four superintegrable potentials, which were first given by Kalnins et al. We are able to evaluate the path integral in most of the separating coordinate systems, leading to expressions for the Green functions, the discrete and continuous wave-functions, and the discrete energy-spectra. In some cases, however, the discrete spectrum cannot be stated explicitly, because it is determined by a higher order polynomial equation. We show that also the free motion in Darboux space of type III can contain bound states, provided the boundary conditions are appropriate. We state the energy spectrum and the wave-functions, respectively. (orig.)

  13. Synthesis and structural characterisation of mixed An(IV)-An(III) actinide oxalates used as precursors for dedicated fuel or target

    International Nuclear Information System (INIS)

    Tamain, Christelle; Grandjean, Stephane; Arab Chapelet, Benedicte; Abraham, Francis

    2010-01-01

    Oxalic co-conversion process plays an important role by producing mixed-actinide compounds used as starting materials as they are particularly suitable precursors of actinide oxide solid solutions. In these oxalate compounds, a mixed crystallographic site which accommodates both elements in spite of their different oxidation states has been established. The charge compensation is ensured by monovalent cations present in the acidic solution. This communication reviews the various mixed-actinide oxalates obtained by crystallization from acidic solution. First, crystallographic structures determined by X-ray diffraction from single crystals are described. Then completing data obtained by powder X-ray diffraction are presented on various systems. The different supramolecular arrangements underline the complexity of An(IV)-An(III)/Ln(III) oxalate system and the need to pursue studies on single crystals. (authors)

  14. Administration, Scoring, & Procedures Manual for the DSMPTSD III-R & DSMPTSD IV. A Measure of Posttraumatic Stress Disorder Structured to Meet DSM-III-R & DSM-IV Diagnostic Criteria

    National Research Council Canada - National Science Library

    Ursano, Robert

    1997-01-01

    Since many trauma and disaster studies include the Impact of Events Scale (lES) and the SCL-9O-R as core instruments, the DSMPTSD-III-R has been developed to identify PTSD with the addition of only 12 Supplemental Items to these two scales...

  15. FISA-2009 Conference on Euratom Research and Training Activities: Nuclear Fission - Past, Present and Future (Generation-II, -III and -IV + Partitioning and Transmutation)

    International Nuclear Information System (INIS)

    Bhatnagar, V.; Deffrennes, M.; Hugon, M.; Manolatos, P.; Ptackova, K.; Van Goethem, G.; Webster, S.

    2011-01-01

    This paper is an introduction to the research and training activities carried out under the Euratom 7th Framework Programme (FP7, 2007-2011) in the field of nuclear fission science and technology, covering in particular nuclear systems and safety, and including innovative reactor systems and partitioning and transmutation. It is based on the more than 40 invited lectures that were delivered by Euratom project coordinators and keynote speakers at the FISA-2009 Conference (), organised by the European Commission DG Research, 22-24 June 2009, Prague, Czech Republic. The Euratom programme must be considered in the context of current and future nuclear technology and the respective research effort: ·Generation-II (i.e. yesterday, NPP construction 1970-2000): safety and reliability of nuclear facilities and energy independence in order to ensure security of supply worldwide; ·Generation-III (i.e. today, construction 2000-2040+): continuous improvement of safety and reliability, and increased industrial competitiveness in a growing energy market; ·Generation-IV (i.e. tomorrow, construction from 2040) for increased sustainability though optimal utilisation of natural resources and waste minimisation, and increased proliferation resistance. Consequently, the focus of the lectures devoted to Generation-II and -III is on the major scientific challenges and technological developments needed to guarantee safety and reliability, in particular issues associated with plant lifetime extension and operation. The focus of the lectures devoted to Generation-IV is on the design objectives and associated research issues that have been agreed upon internationally, in particular the ambitious criteria and technology goals established at the international level by the Generation-IV International Forum (GIF). In the future, electricity must continue to be produced competitively, and in addition high temperature process heat may also be required, while exploiting a maximum of fissile and

  16. Oxovanadium(IV), cerium(III), thorium(IV) and dioxouranium(VI) complexes of 1-ethyl-4-hydroxy-3-(nitroacetyl)quinolin-2(1H)-one: Synthesis, spectral, thermal, fluorescence, DFT calculations, antimicrobial and antitumor studies

    Science.gov (United States)

    El-Shafiy, H. F.; Shebl, Magdy

    2018-03-01

    A new series of mononuclear oxovanadium(IV), cerium(III), thorium(IV) and dioxouranium(VI) complexes of a quinolinone ligand; 1-ethyl-4-hydroxy-3-(nitroacetyl)quinolin-2(1H)-one (H2L) have been synthesized. The metal complexes were characterized by different techniques such as elemental and thermal analyses, IR, 1H NMR, electronic, ESR, mass spectra and powder XRD, TEM in addition to magnetic susceptibility and conductivity measurements. The quinolinone ligand acts as a dibasic bidentate ligand forming mononuclear complexes, which can be formulated as: [(L)VO(H2O)2]·0.5H2O, [(L)M(NO3)x(H2O)y]·nH2O; M = Ce or Th, x = 1 or 2, y = 3 or 4 and n = 2 or 7 and [(L)UO2(H2O)x(MeOH)y]·nH2O; x = 2 or 3, y = 0 or 1 and n = 0.5 or 2.5. The photoluminescent properties of the prepared complexes were studied. The ligand and its thorium(IV) complex are characterized by an intense green emission. Kinetic parameters (Ea, A, ΔH, ΔS and ΔG) of the thermal decomposition stages have been evaluated using Coats-Redfern equations. The geometry of the ligand and its oxovanadium(IV) complex has been optimized using density functional theory (DFT). Total energy, energy of HOMO and LUMO, dipole moment and structure activity relationship were performed and confirmed practical antimicrobial and antitumor results. The antimicrobial activity of the ligand and its metal complexes was conducted against the microorganisms S. aureus, K. pnemonia, E. coli, P. vulgaris and C. albicans and the MIC values were determined. The antitumor activity of the ligand and its metal complexes was investigated against human Hepatocelluar carcinoma and human breast cancer cell lines.

  17. Predictors of Local Recurrence After Rituximab-Based Chemotherapy Alone in Stage III and IV Diffuse Large B-Cell Lymphoma: Guiding Decisions for Consolidative Radiation

    Energy Technology Data Exchange (ETDEWEB)

    Jegadeesh, Naresh; Rajpara, Raj; Esiashvili, Natia; Shi, Zheng [Department of Radiation Oncology, Emory University, Atlanta, Georgia (United States); Winship Cancer Institute, Emory University, Atlanta, Georgia (United States); Liu, Yuan [Winship Cancer Institute, Emory University, Atlanta, Georgia (United States); Department of Biostatistics and Bioinformatics Shared Resource, Emory University, Atlanta, Georgia (United States); Okwan-Duodu, Derrick [Department of Radiation Oncology, Emory University, Atlanta, Georgia (United States); Winship Cancer Institute, Emory University, Atlanta, Georgia (United States); Flowers, Christopher R. [Winship Cancer Institute, Emory University, Atlanta, Georgia (United States); Department of Medical Oncology, Emory University, Atlanta, Georgia (United States); Khan, Mohammad K., E-mail: drkhurram2000@gmail.com [Department of Radiation Oncology, Emory University, Atlanta, Georgia (United States); Winship Cancer Institute, Emory University, Atlanta, Georgia (United States)

    2015-05-01

    Purpose: The role of consolidative radiation therapy (RT) for stage III and IV diffuse large B-cell lymphoma (DLBCL) in the era of rituximab is not well defined. There is evidence that some patients with bulky disease may benefit, but patient selection criteria are not well established. We sought to identify a subset of patients who experienced a high local failure rate after receiving rituximab-based chemotherapy alone and hence may benefit from the addition of consolidative RT. Methods and Materials: Two hundred eleven patients with stage III and IV DLBCL treated between August 1999 and January 2012 were reviewed. Of these, 89 had a complete response to systemic therapy including rituximab and received no initial RT. Kaplan-Meier analysis and Cox proportional hazards regression were performed, with local recurrence (LR) as the primary outcome. Results: The median follow-up time was 43.9 months. Fifty percent of patients experienced LR at 5 years. In multivariate analysis, tumor ≥5 cm and stage III disease were associated with increased risk of LR. The 5-year LR-free survival was 47.4% for patients with ≥5-cm lesions versus 74.7% for patients with <5-cm lesions (P=.01). In patients with <5-cm tumors, the maximum standardized uptake value (SUVmax) was ≥15 in all patients with LR. The 5-year LR-free survival was 100% in SUV<15 versus 68.8% in SUV≥15 (P=.10). Conclusions: Advanced-stage DLBCL patients with stage III disease or with disease ≥5 cm appear to be at an increased risk for LR. Patients with <5-cm disease and SUVmax ≥15 may be at higher risk for LR. These patients may benefit from consolidative RT after chemoimmunotherapy.

  18. Predictors of Local Recurrence After Rituximab-Based Chemotherapy Alone in Stage III and IV Diffuse Large B-Cell Lymphoma: Guiding Decisions for Consolidative Radiation

    International Nuclear Information System (INIS)

    Jegadeesh, Naresh; Rajpara, Raj; Esiashvili, Natia; Shi, Zheng; Liu, Yuan; Okwan-Duodu, Derrick; Flowers, Christopher R.; Khan, Mohammad K.

    2015-01-01

    Purpose: The role of consolidative radiation therapy (RT) for stage III and IV diffuse large B-cell lymphoma (DLBCL) in the era of rituximab is not well defined. There is evidence that some patients with bulky disease may benefit, but patient selection criteria are not well established. We sought to identify a subset of patients who experienced a high local failure rate after receiving rituximab-based chemotherapy alone and hence may benefit from the addition of consolidative RT. Methods and Materials: Two hundred eleven patients with stage III and IV DLBCL treated between August 1999 and January 2012 were reviewed. Of these, 89 had a complete response to systemic therapy including rituximab and received no initial RT. Kaplan-Meier analysis and Cox proportional hazards regression were performed, with local recurrence (LR) as the primary outcome. Results: The median follow-up time was 43.9 months. Fifty percent of patients experienced LR at 5 years. In multivariate analysis, tumor ≥5 cm and stage III disease were associated with increased risk of LR. The 5-year LR-free survival was 47.4% for patients with ≥5-cm lesions versus 74.7% for patients with <5-cm lesions (P=.01). In patients with <5-cm tumors, the maximum standardized uptake value (SUVmax) was ≥15 in all patients with LR. The 5-year LR-free survival was 100% in SUV<15 versus 68.8% in SUV≥15 (P=.10). Conclusions: Advanced-stage DLBCL patients with stage III disease or with disease ≥5 cm appear to be at an increased risk for LR. Patients with <5-cm disease and SUVmax ≥15 may be at higher risk for LR. These patients may benefit from consolidative RT after chemoimmunotherapy

  19. Separation of Cr(III) from Cr(VI) by Triton X-100 cerium(IV) phosphate as a surface active ion exchanger

    International Nuclear Information System (INIS)

    El-Azony, K.M.; Ismail Aydia, M.; El-Mohty, A.A.

    2011-01-01

    Triton X-100 cerium(IV) phosphate (TX-100CeP) was synthesized and characterized by using IR, X-ray, TGA/DT and the elemental analysis. The chemical stability of TX-100CeP versus the different concentrations of HCl acid was studied before and after its exposure to the radiation dose (30 K Gray). The effect of HCl concentration on separation of Cr(III) from Cr(VI) by using TX-100CeP as surface active ion exchanger was also studied. A novel method was achieved for the quantifying of Cr(III) and Cr(VI) ions by using the high-performance liquid chromatography (HPLC) at wavelength 650 nm, a stationary phase consists of reversed phase column (Nucleosil phenyl column; 250 x 4.6 mm, 5 μm), and a mobile phase consists of 0.001 M di-(2-ethylhexyl) phosphoric acid (DEHPA) in methanol:water (70:30 v/v). The retention times were 7.0 and 8.5 min, for the Cr(III) and Cr(VI), respectively. The exchange capacity of Cr(III) was quantified (2.1 meq/g) onto the TX-100CeP. (author)

  20. Liquid-liquid extraction (LLE) of Fe(III) and Ti(IV) by bis-(2-ethyl-hexyl) phosphoric acid (D2EHPA) in sulfuric acid medium; Extracao liquido-liquido de ferro (III) e titanio (IV) pelo acido bis-(2-etil-hexil) fosforico (D2EHPA) em meio de acido sulfurico

    Energy Technology Data Exchange (ETDEWEB)

    Silva, Glauco Correa da; Cunha, Jose Waldemar Silva Dias da [Instituto de Engenharia Nuclear (IEN), Rio de Janeiro, RJ (Brazil). Dept. de Quimica e Materiais Nucleares; Dweck, Jo [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Escola de Quimica. Dept. de Processos Inorganicos; Afonso, Julio Carlos [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Inst. de Quimica. Dept. de Quimica Analitica]. E-mail: julio@iq.ufrj.br

    2008-07-01

    This work presents a study on the separation of Fe(III) and Ti(IV) from sulfuric acid leaching solutions of ilmenite (FeTiO{sub 3}) using liquid-liquid extraction with D2EHPA in n-dodecane as extracting agent. The distribution coefficients (K{sub D}) of the elements related to free acidity and concentration of Fe(III) and Ti(IV) were determined. Free acidity was changed from 3x10{sup -2} to 11.88 mol L{sup -1} and D2EHPA concentration was fixed at 1.5 mol L{sup 1}. Recovery of final products as well as recycling of wastes generated in the process were also investigated. The LLE process as a feasible alternative to obtain high-purity TiO{sub 2}. (author)

  1. The energy consumption of the services and farming sectors 1990 - 2035 - Results of scenarios I - IV; Der Energieverbrauch der Dienstleistungen und der Landwirtschaft, 1990 - 2035. Ergebnisse der Szenarien I bis IV und der zugehoerigen Sensitivitaeten BIP hoch, Preise hoch und Klima waermer

    Energy Technology Data Exchange (ETDEWEB)

    Aebischer, B.; Catenazzi, G.

    2007-07-01

    This comprehensive report for the Swiss Federal Office of Energy (SFOE) presents four scenarios concerning the development of energy consumption in the services sector and for farming for the period 1990 - 2035. The four scenarios - status quo, increased co-operation between the state and the economy with various levies, global reduction of energy consumption and, finally, scenario IV 'on the way to a 2000-Watt Society' - are briefly described. In particular, the scenarios are examined for various sensitivities: high gross domestic product GDP, CO{sub 2} levy, high prices and warmer climate. The models and methods used are examined and examples of their use are quoted. The results of the sensitivity analyses are compared and discussed and the necessary instruments are examined. This comprehensive report contains a large number of data-tables and graphical representations

  2. The ENEN-III project: Technical Training on the Concepts and Design of GEN IV nuclear reactors

    International Nuclear Information System (INIS)

    Berkvens, T.; Renault, C.; Alonso, M.; Salomaa, R.; Schönfelder, C.

    2013-01-01

    Some conclusions: • Not enough training courses to cover the LO’s: – Especially GEN IV; – Many introductory courses, little specific courses; – Reach out to other partners for more courses. • Skills and Attitudes: – Much more difficult to train/measure; – To be treated in a separate project. • Use of Learning Outcomes must be promoted; • Involvement of human resources necessary for the successful implementation of the schemes: – End of project workshop

  3. Computed oscillator strengths and energy levels for Fe III, Fe IV, Fe V, and Fe VI with calculated wavelengths and wavelengths derived from established data

    International Nuclear Information System (INIS)

    Fawcett, B.C.

    1989-01-01

    Calculated weighted oscillator strengths are tabulated for spectral lines of Fe III, Fe IV, Fe V, and Fe VI. The lines belong to transition arrays 3d 6 -3d 5 4p and 3d 5 4s-3d 5 4p in Fe III, 3d 5 -3d 4 4p and 3d 4 4s-3d 4 4p in Fe IV, 3d 4 -3d 3 4p and 3d 3 4s-3d 3 4p in Fe V, and 3d 3 -3d 2 4p and 3d 2 4s-3d 2 4p in Fe VI. For the calculations, Slater parameters are optimized on the basis of minimizing the discrepancies between observed and computed wavelengths. Configuration interaction was included among the 3d n , 3d n-1 4s, 3d n-2 4s 2 , 3d n-1 4d, and 3d n-1 5s even configurations and among the 3d n-1 4p, 3d n-2 4s4p, and 3d n-1 5p odd configurations, with 3p 5 3d n+1 added for Fe VI. Calculated wavelengths are compared with observational data, and the compositions of energy levels are listed. This completes a series of similar computations for these complex configurations covering Fe I to Fe VI

  4. Multisensor system for determination of iron(II), iron(III), uranium(VI) and uranium(IV) in complex solutions

    International Nuclear Information System (INIS)

    Legin, A.V.; Seleznev, B.L.; Rudnitskaya, A.M.; Vlasov, Yu.G.; Tverdokhlebov, S.V.; Mack, B.; Abraham, A.; Arnold, T.; Baraniak, L.; Nitsche, H.

    1999-01-01

    Development and analytical evaluation of a multisensor system based on the principles of 'electronic tongue' for the determination of low contents of uranium(VI), uranium(IV), iron(II) and iron(III) in complex aqueous media have been carried out. A set of 29 different chemical sensors on the basis of all- solid-state crystalline and vitreous materials with enhanced electronic conductivity and redox and ionic cross-sensitivity have been incorporated into the sensor array. Multidimensional data have been processed by pattern recognition methods such as artificial neural networks and partial least squares. It has been demonstrated that Fe(II) and Fe(III) contents in the range from 10 -7 to 10 -4 mol L -1 of total iron concentration can be determined with the average precision of about 25 %. U(VI) and U(IV) contents can been determined with the average precision of 10-40% depending on the concentration. The developed multisensor system can be applied in future for the analysis of mining and borehole waters as well other contaminated natural media, including on-site measurements. (author)

  5. Behaviour of palladium(II), platinum(IV), and rhodium(III) in artificial and natural waters: Influence of reactor surface and geochemistry on metal recovery

    Energy Technology Data Exchange (ETDEWEB)

    Cobelo-Garcia, Antonio [School of Earth, Ocean and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA (United Kingdom)]. E-mail: antonio.cobelo-garcia@plymouth.ac.uk; Turner, Andrew [School of Earth, Ocean and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA (United Kingdom); Millward, Geoffrey E. [School of Earth, Ocean and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA (United Kingdom); Couceiro, Fay [School of Earth, Ocean and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth PL4 8AA (United Kingdom)

    2007-03-07

    The recovery of dissolved platinum group elements (PGE: Pd(II), Pt(IV) and Rh(III)) added to Milli-Q[reg] water, artificial freshwater and seawater and filtered natural waters has been studied, as a function of pH and PGE concentration, in containers of varying synthetic composition. The least adsorptive and/or precipitative loss was obtained for borosilicate glass under most of the conditions employed, whereas the greatest loss was obtained for low-density polyethylene. Of the polymeric materials tested, the adsorptive and/or precipitative loss of PGE was lowest for fluorinated ethylene propylene (Teflon[reg]). The loss of Pd(II) in freshwater was significant due to its affinity for surface adsorption and its relatively low solubility. The presence of natural dissolved organic matter increases the recovery of Pd(II) but enhances the loss of Pt(IV). The loss of Rh(III) in seawater was significant and was mainly due to precipitation, whereas Pd(II) recovery was enhanced, compared to freshwater, because of its complexation with chloride. The results have important implications regarding protocols employed for sample preservation and controlled laboratory experiments used in the study of the speciation and biogeochemical behaviour of PGE.

  6. 40 CFR 147.2200 - State-administered program-Class I, III, IV, and V wells.

    Science.gov (United States)

    2010-07-01

    ... AGENCY (CONTINUED) WATER PROGRAMS (CONTINUED) STATE, TRIBAL, AND EPA-ADMINISTERED UNDERGROUND INJECTION... administered by the Railroad Commission of Texas. A program revision application for Class III brine mining..._regulations/ibr_locations.html. (1) Texas Statutory and Regulatory Requirements Applicable to the Underground...

  7. Efficient generation of volatile cadmium species using Ti(III) and Ti(IV) and application to determination of cadmium by cold vapor generation inductively coupled plasma mass spectrometry (CVG-ICP-MS)†

    Science.gov (United States)

    Arslan, Zikri; Yilmaz, Vedat; Rose, LaKeysha

    2015-01-01

    In this study, a highly efficient chemical vapor generation (CVG) approach is reported for determination of cadmium (Cd). Titanium (III) and titanium (IV) were investigated for the first time as catalytic additives along with thiourea, L-cysteine and potassium cyanide (KCN) for generation of volatile Cd species. Both Ti(III) and Ti(IV) provided the highest enhancement with KCN. The improvement with thiourea was marginal (ca. 2-fold), while L-cysteine enhanced signal slightly only with Ti(III) in H2SO4. Optimum CVG conditions were 4% (v/v) HCl + 0.03 M Ti(III) + 0.16 M KCN and 2% (v/v) HNO3 + 0.03 M Ti(IV) + 0.16 M KCN with a 3% (m/v) NaBH4 solution. The sensitivity was improved about 40-fold with Ti(III) and 35-fold with Ti(IV). A limit of detection (LOD) of 3.2 ng L−1 was achieved with Ti(III) by CVG-ICP-MS. The LOD with Ti(IV) was 6.4 ng L−1 which was limited by the blank signals in Ti(IV) solution. Experimental evidence indicated that Ti(III) and Ti(IV) enhanced Cd vapor generation catalytically; for best efficiency mixing prior to reaction with NaBH4 was critical. The method was highly robust against the effects of transition metal ions. No significant suppression was observed in the presence of Co(II), Cr(III), Cu(II), Fe(III), Mn(II), Ni(II) and Zn(II) up to 1.0 μg mL−1. Among the hydride forming elements, no interference was observed from As(III) and Se(IV) at 0.5 μg mL−1 level. The depressive effects from Pb(II) and Sb(III) were not significant at 0.1 μg mL−1 while those from Bi(III) and Sn(II) were marginal. The procedures were validated with determination of Cd by CVG-ICP-MS in a number certified reference materials, including Nearshore seawater (CASS-4), Bone ash (SRM 1400), Dogfish liver (DOLT-4), Mussel tissue (SRM 2976) and Domestic Sludge (SRM 2781). PMID:26251554

  8. On some derived compounds of fluorides of Cerium III or IV: defined compounds and non stoichiometric phases

    International Nuclear Information System (INIS)

    Besse, Jean-Pierre

    1968-01-01

    This research study addresses the study of rare earth fluorides. It reports the preparation and study of new fluoro-cerates (IV) in order to complete the set of already known compounds (ammonium fluoro-cerate, and alkaline earth compounds), the study of binary CeF 3 binary systems, monovalent and divalent fluorides, and CeF 3 -NF 2 -N'F ternary systems, and the study of non stoichiometric phases in CeF 3 oxides, sulphides and selenides [fr

  9. Autoionizing energy levels and extended spectral analysis of copper-like gallium and germanium (Ga III, Ge IV)

    International Nuclear Information System (INIS)

    Ryabtsev, A.N.; Wyart, J.F.

    1987-01-01

    The spark spectra of doubly ionized gallium and triply ionized germanium have been observed. Lines broadened by autoionization have been attributed to 3d 9 4p 2 - 3d 10 4p transitions on the basis of parametric studies of the configurations 3d 9 4p 2 + 3d 9 4s4d. Line strengths and autoionization widths support the identifications. The analysis of the 3d 10 nl system has been corrected and extended. The ionization energy of Ge IV is 368 720 cm -1 ± 10 cm -1 . (orig.)

  10. Zwitterion-functionalized polymer microspheres as a sorbent for solid phase extraction of trace levels of V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II) prior to their determination by ICP-MS.

    Science.gov (United States)

    Jia, Xiaoyu; Gong, Dirong; Zhao, Junyi; Ren, Hongyun; Wang, Jiani; Zhang, Xian

    2018-03-19

    This paper describes the preparation of zwitterion-functionalized polymer microspheres (ZPMs) and their application to simultaneous enrichment of V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II) from environmental water samples. The ZPMs were prepared by emulsion copolymerization of ethyl methacrylate, 2-diethylaminoethyl methacrylate and triethylene glycol dimethyl acrylate followed by modification with 1,3-propanesultone. The components were analyzed by elemental analyses as well as Fourier transform infrared spectroscopy, and the structures were characterized by scanning electron microscopy and transmission electron microscopy. The ZPMs were packed into a mini-column for on-line solid-phase extraction (SPE) of the above metal ions. Following extraction with 40 mM NH 4 NO 3 and 0.5 M HNO 3 solution, the ions were quantified by ICP-MS. Under the optimized conditions, the enrichment factors (from a 40 mL sample) are up to 60 for the ions V(V), As(III), Sb(III) and Hg(II), and 55 for Cr(III) and Sn(IV). The detection limits are 1.2, 3.4, 1.0, 3.7, 2.1 and 1.6 ng L -1 for V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II), respectively, and the relative standard deviations (RSDs) are below 5.2%. The feasibility and accuracy of the method were validated by successfully analyzing six certified reference materials as well as lake, well and river waters. Graphical abstract Zwitterion-functionalized polymer microspheres (ZPMs) were prepared and packed into a mini-column for on-line solid-phase extraction (SPE) via pump 1. Then V(V), Cr(III), As(III), Sn(IV), Sb(III) and Hg(II) ions in environmental waters were eluted and submitted to ICP-MS via pump 2.

  11. Homoleptic Ce(III) and Ce(IV) Nitroxide Complexes: Significant Stabilization of the 4+ Oxidation State

    Energy Technology Data Exchange (ETDEWEB)

    Bogart, Justin A.; Lewis, Andrew J.; Medling, Scott A.; Piro, Nicholas A.; Carroll, Patrick J.; Booth, Corwin H.; Schelter, Eric J.

    2014-06-25

    Electrochemical experiments performed on the complex Ce-IV[2-((BuNO)-Bu-t)py](4), where [2-((BuNO)-Bu-t)py](-) = N-tert-butyl-N-2-pyridylnitroxide, indicate a 2.51 V stabilization of the 4+ oxidation state of Ce compared to [(Bu4N)-Bu-n](2)[Ce(NO3)(6)] in acetonitrile and a 2.95 V stabilization compared to the standard potential for the ion under aqueous conditions. Density functional theory calculations suggest that this preference for the higher oxidation state is a result of the tetrakis(nitroxide) ligand framework at the Ce cation, which allows for effective electron donation into, and partial covalent overlap with, vacant 4f orbitals with delta symmetry. The results speak to the behavior of CeO2 and related solid solutions in oxygen uptake and transport applications, in particular an inherent local character of bonding that stabilizes the 4+ oxidation state. The results indicate a cerium(IV) complex that has been stabilized to an unprecedented degree through tuning of its ligand-field environment.

  12. Improved recovery of trace amounts of gold (III), palladium (II) and platinum (IV) from large amounts of associated base metals using anion-exchange resins

    Energy Technology Data Exchange (ETDEWEB)

    Matsubara, I. [Lab. of Chemistry, Tokyo Women' s Medical Univ. (Japan); Takeda, Y.; Ishida, K. [Lab. of Chemistry, Nippon Medical School, Kawasaki-shi, Kanagawa-ken (Japan)

    2000-02-01

    The adsorption and desorption behaviors of gold (III), palladium (II) and platinum (IV) were surveyed in column chromatographic systems consisting of one of the conventional anion-exchange resins of large ion-exchange capacity and dilute thiourea solutions. The noble metals were strongly adsorbed on the anion-exchange resins from dilute hydrochloric acid, while most base metals did not show any marked adsorbability. These facts made it possible to separate the noble metals from a large quantity of base metals such as Ag (I), Al (III), Co (II), Cu (II), Fe (III), Mn (II), Ni (II), Pb (II), and Zn (II). Although it used to be very difficult to desorb the noble metals from the resins used, the difficulty was easily overcome by use of dilute thiourea solutions as an eluant. In the present study, as little as 1.00 {mu}g of the respective noble metals was quantitatively separated and recovered from as much as ca. 10 mg of a number of metals on a small column by elution with a small amount of dilute thiourea solution. The present systems should be applicable to the separation, concentration and recovery of traces of the noble metals from a number of base metals coexisting in a more extended range of amounts and ratios. (orig.)

  13. Phase 3 Trial of Postoperative Chemotherapy Alone Versus Chemoradiation Therapy in Stage III-IV Gastric Cancer Treated With R0 Gastrectomy and D2 Lymph Node Dissection

    International Nuclear Information System (INIS)

    Kim, Tae Hyun; Park, Sook Ryun; Ryu, Keun Won; Kim, Young-Woo; Bae, Jae-Moon; Lee, Jun Ho; Choi, Il Ju; Kim, Yeon-Joo; Kim, Dae Yong

    2012-01-01

    Purpose: To compare chemotherapy alone with chemoradiation therapy in stage III-IV(M0) gastric cancer treated with R0 gastrectomy and D2 lymph node dissection. Methods and Materials: The chemotherapy arm received 5 cycles of fluorouracil and leucovorin (FL), and the chemoradiation therapy arm received 1 cycle of FL, then radiation therapy of 45 Gy concurrently with 2 cycles of FL, followed by 2 cycles of FL. Intent-to-treat analysis and per-protocol analyses were performed. Results: Between May 6, 2002 and June 29, 2006, a total of 90 patients were enrolled. Forty-four were randomly assigned to the chemotherapy arm and 46 to the chemoradiation therapy arm. Treatment was completed as planned by 93.2% of patients in the chemotherapy arm and 87.0% in the chemoradiation therapy arm. Overall intent-to-treat analysis showed that addition of radiation therapy to chemotherapy significantly improved locoregional recurrence-free survival (LRRFS) but not disease-free survival. In subgroup analysis for stage III, chemoradiation therapy significantly prolonged the 5-year LRRFS and disease-free survival rates compared with chemotherapy (93.2% vs 66.8%, P=.014; 73.5% vs 54.6%, P=.056, respectively). Conclusions: Addition of radiation therapy to chemotherapy could improve the LRRFS in stage III gastric cancer treated with R0 gastrectomy and D2 lymph node dissection.

  14. Experimental determination of the energy levels of the antimony atom (Sb II), ions of the antimony (Sb II, Sb III), mercury (Hg IV) and cesium (Cs X)

    International Nuclear Information System (INIS)

    Arcimowicz, B.

    1993-01-01

    The thesis concerns establishing the energy scheme of the electronic levels, obtained from the analysis of the investigated spectra of antimony atom and ions (Sb I, Sb II, Sb III) and higher ionized mercury (Hg IV) and cesium (Cs X) atoms. The experimental studies were performed with optical spectroscopy methods. The spectra of the elements under study obtained in the spectral range from visible (680 nm) to vacuum UV (40 nm) were analysed. The classification and spectroscopic designation of the experimentally established 169 energy levels were obtained on the basis of the performed calculations and the fine structure analysis. The following configurations were considered: 5s 2 5p 2 ns, 5s 2 5p 2 n'd, 5s5p 4 of the antimony atom, 5s 2 5pns, 5s 2 5pn'd, 5s5p 3 of the ion Sb II, 5s 2 ns, 5s 2 n'd, 5s5p 2 of the on Sb III, 5d 8 6p of the ion Hg IV 4d 9 5s and 4d 9 5p Cs X. A reclassification was performed and some changes were introduced to the existing energy level scheme of the antimony atom, with the use of the information obtained from the absorption spectrum taken in the VUV region by the ''flash pyrolysis'' technique. The measurements of the hyperfine splittings in 19 spectral lines belonging to the antimony atom and ions additionally confirmed the assumed classification of the levels involved in these lines. The energy level scheme, obtained for Sb III, was compared to the other ones in the isoelectronic sequence starting with In I. On the basis of the analysis of the Hg IV spectrum it was proved that ground configuration of the three times ionized mercury atom is 5d 9 not 5d 8 6s as assumed until now. The fine structure, established from the analysis of the spectra of the elements under study was examined in multiconfiguration approximation. As a result of the performed calculations the fine structure parameters and wavefunctions were determined for the levels whose energy values were experimentally established in the thesis. (author). 140 refs, 22 figs, 17

  15. Selective extraction of U(VI), Th(IV), and La(III) from acidic matrix solutions and environmental samples using chemically modified Amberlite XAD-16 resin

    Energy Technology Data Exchange (ETDEWEB)

    Prabhakaran, D.; Subramanian, M.S. [Department of Chemistry, Indian Institute of Technology, 600 036, Chennai (India)

    2004-06-01

    A new grafted polymer has been developed by the chemical modification of Amberlite XAD-16 (AXAD-16) polymeric matrix with [(2-dihydroxyarsinoylphenylamino)methyl]phosphonic acid (AXAD-16-AsP). The modified polymer was characterized by a combination of {sup 13}C CPMAS and {sup 31}P solid-state NMR, Fourier transform-NIR-FIR-Raman spectroscopy, CHNPS elemental analysis, and thermogravimetric analysis (TGA). The distribution studies for the extraction of U(VI), Th(IV), and La(III) from acidic solutions were performed using an AXAD-16-AsP-packed chromatographic column. The influences of various physiochemical parameters on analyte recovery were optimized by both static and dynamic methods. Accordingly, even under high acidities (>4 M), good distribution ratio (D) values (10{sup 2}-10{sup 4}) were achieved for all the analytes. Metal ion desorption was effective using 1 mol L{sup -1} (NH{sub 4}){sub 2}CO{sub 3}. From kinetic studies, a time duration of <15 min was sufficient for complete metal ion saturation of the resin phase. The maximum metal sorption capacities were found to be 0.25, 0.13, and 1.49 mmol g{sup -1} for U(VI); 0.47, 0.39, and 1.40 mmol g{sup -1} for Th(IV); and 1.44, 1.48, and 1.12 mmol g{sup -1} for La(III), in the presence of 2 mol L{sup -1} HNO{sub 3}, 2 mol L{sup -1} HCl, and under pH conditions, respectively. The analyte selectivity of the grafted polymer was tested in terms of interfering species tolerance studies. The system showed an enrichment factor of 365, 300, and 270 for U(VI), Th(IV), and La(III), and the limit of analyte detection was in the range of 18-23 ng mL{sup -1}. The practical applicability of the polymer was tested with synthetic nuclear spent fuel and seawater mixtures, natural water, and geological samples. The RSD of the total analytical procedure was within 4.9%, thus confirming the reliability of the developed method. (orig.)

  16. Medicinal flowers. XXVII. New flavanone and chalcone glycosides, arenariumosides I, II, III, and IV, and tumor necrosis factor-alpha inhibitors from everlasting, flowers of Helichrysum arenarium.

    Science.gov (United States)

    Morikawa, Toshio; Wang, Li-Bo; Nakamura, Seikou; Ninomiya, Kiyofumi; Yokoyama, Eri; Matsuda, Hisashi; Muraoka, Osamu; Wu, Li-Jun; Yoshikawa, Masayuki

    2009-04-01

    The methanolic extract from the flowers of Helichrysum arenarium L. MOENCH was found to show inhibitory effect on tumor necrosis factor-alpha (TNF-alpha, 1 ng/ml)-induced cytotoxicity in L929 cells. From the methanolic extract, 50 constituents including four new flavanone and chalcone glycosides named arenariumosides I (1), II (2), III (3), and IV (4) were isolated. The stereostructures of 1-4 were elucidated on the basis of chemical and physicochemical evidence. Among the constituents, naringenin 7-O-beta-D-glucopyranoside (7), apigenin 7-O-beta-D-glucopyranoside (14), apigenin 7-O-gentiobioside (16), and apigenin 7,4'-di-O-beta-D-glucopyranoside (17) significantly inhibited TNF-alpha-induced cytotoxicity in L929 cells at 30 microM.

  17. Ce(III), Th(IV) and U(VI) chelates of alizarin viridine, alizarin heliotrope and alizarin maroon

    International Nuclear Information System (INIS)

    Idriss, K.A.; Issa, I.M.; Seleim, M.M.

    1977-01-01

    The complexes of 7,8-dihydroxy-1,4-di(2'-sulpho-4' methylanilino)-anthraquinone (alizarin viridine); 1,4-dihydroxy-2(2'-sulpho-4'-methylanilino)anthraquinone (alizarin heliotrope) and 3-amino-1,2-dihydroxyanthraquinone (alizarin maroon) with Ce(III), and U(VI) have been investigated using spectrophotometric and conductometric methods. The study revealed the formation of complexes having the metal: ligand ratios 1:1 and 1:2. The mean values of logβ (β being stability constant) for the different complexes are determined. The structure of the ligands in the solid chelates were studied by i.r. spectrophotmetry which showed that chelate formation takes place through the C=O and neighbouring OH group and leads to proton displacement. (author)

  18. Thyroid remnant ablation success and disease outcome in stage III or IV differentiated thyroid carcinoma: recombinant human thyrotropin versus thyroid hormone withdrawal.

    Science.gov (United States)

    Vallejo Casas, Juan A; Mena Bares, Luisa M; Gálvez Moreno, Maria A; Moreno Ortega, Estefanía; Marlowe, Robert J; Maza Muret, Francisco R; Albalá González, María D

    2016-06-01

    Most publications to date compare outcomes after post-surgical thyroid remnant ablation stimulated by recombinant human thyrotropin (rhTSH) versus thyroid hormone withholding/withdrawal (THW) in low-recurrence risk differentiated thyroid carcinoma (DTC) patients. We sought to perform this comparison in high-risk patients. We retrospectively analyzed ~9-year single-center experience in 70 consecutive adults with initial UICC (Union for International Cancer Control) stage III/IV, M0 DTC undergoing rhTSH-aided (N.=54) or THW-aided (N.=16) high-activity ablation. Endpoints included ablation success and DTC outcome. Assessed ≥1 year post-ablation, ablation success comprised a) no visible scintigraphic thyroid bed uptake or pathological extra-thyroidal uptake; b) undetectable stimulated serum thyroglobulin (Tg) without interfering autoantibodies; c) both criteria. DTC outcome, determined at the latest visit, comprised either 1) "no evidence of disease" (NED): undetectable Tg, negative Tg autoantibodies, negative most recent whole-body scan, no suspicious findings clinically, on neck ultrasonography, or on other imaging; 2) persistent disease: failure to attain NED; or 3) recurrence: loss of NED. After the first ablative activity, ablation success by scintigraphic plus biochemical criteria was 64.8% in rhTSH patients, 56.3% in THW patients (P=NS). After 3.5-year versus 6.2-year median follow-up (P<0.05), DTC outcomes were NED, 85.2%, persistent disease, 13.0%, recurrence, 1.9%, in the rhTSH group and NED, 87.5%, persistent or recurrent disease, 6.3% each, in the THW group (P=NS). In patients with initial stage III/IV, M0 DTC, rhTSH-aided and THW-assisted ablation were associated with comparable remnant eradication or DTC cure rates.

  19. Long-term outcome of stapled transanal rectal resection (STARR) versus stapled hemorrhoidopexys (STH) for grade III-IV hemorrhoids: preliminary results.

    Science.gov (United States)

    Zanella, Simone; Spirch, Saverio; Scarpa, Marco; Ricci, Francesco; Lumachi, Franco

    2014-01-01

    Circular stapled transanal hemorrhoidopexy (STH) was first introduced by A. Longo for the correction of internal mucosal prolapse and obstructed defecation and in 1998, was proposed as alternative to conventional excisional hemorrhoidectomy. More recently, stapled transanal rectal resection (STARR) has gradually gained popularity, as the Longo procedure, in the treatment of hemorrhoids. The aim of our study was to evaluate the usefulness of STARR as alternative to STH in patients with grade III (n=218, 68.1%) and IV (n=102, 31.9%) hemorrhoids. A group of 320 consecutive patients (median age=51 years; range=16-85) underwent STH (n=281) or STARR (n=39) procedure. The rate of postoperative bleeding (53.8% vs. 74.4%, phemorrhoids and a lower incidence of prolapse, both at one year (none vs. 1.4%, p=0.593 and 2.6% vs. 5.3%, p=0.396, respectively) and at two years (none vs. 6.8%, p=0.078 and none vs. 13.2%, p=0.012, respectively). The one-year (9.0 ± 1.8 vs. 9.4 ± 0.7, p=0.171) and two-year (9.6 ± 0.8 vs. 9.1 ± 1.7, p=0.072) general satisfaction was similar but higher in STARR patients than in the STH group. In conclusion, according to our preliminary results, the STARR procedure leads to a lower incidence of complications and recurrences and should be considered for patients with grade III or IV hemorrhoids previously selected for stapled hemorrhoidectomy, as a promising alternative to STH. Copyright © 2014 International Institute of Anticancer Research (Dr. John G. Delinassios), All rights reserved.

  20. Non-invasive high-intensity focused ultrasound for UV-induced hyperpigmentation in Fitzpatrick skin types III and IV: a prospective, randomized, controlled, evaluator-blinded trial.

    Science.gov (United States)

    Vachiramon, Vasanop; Jurairattanaporn, Natthachat; Harnchoowong, Sarawin; Chayavichitsilp, Pamela

    2018-02-01

    Skin hyperpigmentation is a frequently encountered problem, particularly in darker skin types. Unfortunately, standard treatments for this condition have shown disappointing results. High-intensity focused ultrasound (HIFU) is commonly indicated for skin laxity, but recently was used to treat UV-induced hyperpigmentation in animal models. This study is aimed to evaluate the efficacy and safety of high-intensity focused ultrasound for UVB-induced hyperpigmentation in human subjects. A randomized, evaluator-blinded pilot study was conducted on 20 subjects. Each subject was induced three hyperpigmentary spots by local broadband UVB. After 2 weeks, each spot was randomly allocated to control, low-energy, and high-energy HIFU. Subjects were instructed to follow up weekly for a duration of 1 month. Lightness index measurements, mean improvement scores, subjects' satisfaction, pain scores, and side effects were evaluated. All 20 subjects completed the study. Fourteen subjects had Fitzpatrick (FPT) skin type III and six subjects had FPT skin type IV. Twelve subjects showed greater improvement at control sites while eight subjects showed greater improvement at HIFU-treated sites. In FPT skin type III, HIFU appeared to be inferior to control in both lightness index and mean improvement scores, but in FPT skin type IV, HIFU had greater lightness index improvement and higher improvement scores than control. Side effects were more frequent in high-energy-treated areas. Focused ultrasound may be offered in some patients with hyperpigmentary conditions. More research is needed to determine proper energy settings for optimal outcome.

  1. Optimising the use of marine tephrochronology in the North Atlantic: a detailed investigation of the Faroe Marine Ash Zones II, III and IV

    Science.gov (United States)

    Griggs, Adam J.; Davies, Siwan M.; Abbott, Peter M.; Rasmussen, Tine L.; Palmer, Adrian P.

    2014-12-01

    Tephrochronology is central to the INTIMATE goals for testing the degree of climatic synchroneity during abrupt climatic events that punctuated the last glacial period. Since their identification in North Atlantic marine sequences, the Faroe Marine Ash Zone II (FMAZ II), FMAZ III and FMAZ IV have received considerable attention due to their potential for high-precision synchronisation with the Greenland ice-cores. In order to optimise the use of these horizons as isochronous markers, a detailed re-investigation of their geochemical composition, sedimentology and the processes that deposited each ash zone is presented. Shard concentration profiles, geochemical homogeneity and micro-sedimentological structures are investigated for each ash zone preserved within core JM11-19PC, retrieved from the southeastern Norwegian Sea on the central North Faroe Slope. This approach allows a thorough assessment of primary ash-fall preservation and secondary depositional features and demonstrates its value for assessing depositional integrity in the marine environment. Results indicate that the FMAZ II and IV are well-resolved primary deposits that can be used as isochrons for high-precision correlation studies. We outline key recommendations for future marine tephra studies and provide a protocol for optimising the application of tephrochronology to meet the INTIMATE synchronisation goals.

  2. Concurrent chemoradiotherapy with S-1 in patients with stage III-IV oral squamous cell carcinoma: A retrospective analysis of nodal classification based on the neck node level.

    Science.gov (United States)

    Murakami, Ryuji; Semba, Akiko; Kawahara, Kenta; Matsuyama, Keiya; Hiraki, Akimitsu; Nagata, Masashi; Toya, Ryo; Yamashita, Yasuyuki; Oya, Natsuo; Nakayama, Hideki

    2017-07-01

    The aim of the present study was to retrospectively evaluate the treatment outcomes of concurrent chemoradiotherapy (CCRT) with S-1, an oral fluoropyrimidine anticancer agent, for advanced oral squamous cell carcinoma (SCC). The study population consisted of 47 patients with clinical stage III or IV oral SCC, who underwent CCRT with S-1. Pretreatment variables, including patient age, clinical stage, T classification, midline involvement of the primary tumor and nodal status, were analyzed as predictors of survival. In addition to the N classification (node-positive, multiple and contralateral), the prognostic impact of the level of nodal involvement was assessed. Nodal involvement was mainly observed at levels Ib and II; involvement at levels Ia and III-V was considered to be anterior and inferior extension, respectively, and was recorded as extensive nodal involvement (ENI). The 3-year overall survival (OS) and progression-free survival (PFS) rates were 37 and 27%, respectively. A finding of ENI was a significant factor for OS [hazard ratio (HR)=2.16; 95% confidence interval (CI): 1.03-4.55; P=0.038] and PFS (HR=2.65; 95% CI: 1.32-5.33; P=0.005); the 3-year OS and PFS rates in patients with vs. those without ENI were 23 vs. 50% and 9 vs. 43%, respectively. The other variables were not significant. Therefore, CCRT with S-1 may be an alternative treatment for advanced oral SCC; favorable outcomes are expected in patients without ENI.

  3. New lethal disease involving type I and III collagen defect resembling geroderma osteodysplastica, De Barsy syndrome, and Ehlers-Danlos syndrome IV.

    Science.gov (United States)

    Jukkola, A; Kauppila, S; Risteli, L; Vuopala, K; Risteli, J; Leisti, J; Pajunen, L

    1998-06-01

    We describe the clinical findings and biochemical features of a male child suffering from a so far undescribed lethal connective tissue disorder characterised by extreme hypermobility of the joints, lax skin, cataracts, severe growth retardation, and insufficient production of type I and type III procollagens. His features are compared with Ehlers-Danlos type IV, De Barsy syndrome, and geroderma osteodysplastica, as these disorders show some symptoms and signs shared with our patient. The child died because of failure of the connective tissue structures joining the skull and the spine, leading to progressive spinal stenosis. The aortic valve was translucent and insufficient. The clinical symptoms and signs, together with histological findings, suggested a collagen defect. Studies on both skin fibroblast cultures and the patient's serum showed reduced synthesis of collagen types I and III at the protein and RNA levels. The sizes of the mRNAs and newly synthesised proteins were normal, excluding gross structural abnormalities. These findings are not in accordance with any other collagen defect characterised so far.

  4. A fresnoite-structure-related mixed valent titanium(III/IV) chlorosilicate, Ba{sub 3}Ti{sub 2}Si{sub 4}O{sub 14}Cl: A flux crystal growth route to Ti(III) containing oxides

    Energy Technology Data Exchange (ETDEWEB)

    Abeysinghe, Dileka; Smith, Mark D.; Loye, Hans-Conrad zur, E-mail: zurloye@mailbox.sc.edu

    2017-06-15

    Single crystals of mixed valent barium titanium(III/IV) chlorosilicate, Ba{sub 3}Ti{sub 2}Si{sub 4}O{sub 14}Cl{sub 0.91}O{sub 0.09}, were grown in a high temperature molten chloride flux involving an in situ reduction step. The fresnoite structure related Ba{sub 3}Ti{sub 2}Si{sub 4}O{sub 14}Cl{sub 0.91}O{sub 0.09} crystallizes in the tetragonal space group P4/mbm with lattice parameters of a=8.6717(2) Å, c=18.6492(5) Å. The title compound exhibits a 3D structure consisting of 2D layers of fused Ti{sub 2}O{sub 9} and Si{sub 4}O{sub 12} groups and 2D layers of fused Ti{sub 2}O{sub 9}Cl{sub 2} and Si{sub 2}O{sub 7} groups that are linked via barium atoms. The in situ reduction of Ti(IV) to Ti(III) is achieved via the addition of metallic Mg to the flux to function as the reducing agent. The temperature dependence of the magnetic susceptibility shows simple paramagnetism above 100 K. There is a discontinuity in the susceptibility data below 100 K, which might be due to a structural change that takes place resulting in charge ordering. - Graphical abstract: The fresnoite structure related novel reduced barium titanium chlorosilicate, Ba{sub 3}Ti{sub 2}Si{sub 4}O{sub 14}Cl{sub 0.91}O{sub 0.09}, were synthesized via flux method. An in situ reduction of Ti(IV) to Ti(III) achieved using Mg metal. The 3D structure consists 2D layers of fused Ti{sub 2}O{sub 9} and Si{sub 4}O{sub 12} and 2D layers of fused Ti{sub 2}O{sub 9}Cl{sub 2} and Si{sub 2}O{sub 7} connected via barium atoms. Compound shows simple paramagnetism above 100 K. - Highlights: • The fresnoite related Ba{sub 3}Ti{sub 2}Si{sub 4}O{sub 14}Cl{sub 0.91}O{sub 0.09} were grown via molten flux method. • The in situ reduction of Ti(IV) to Ti(III) is achieved using metallic Mg. • 2D layers of Ti{sub 2}O{sub 9} and Si{sub 4}O{sub 12} and Ti{sub 2}O{sub 9}Cl{sub 2} and Si{sub 2}O{sub 7} connect via Ba atoms. • The magnetic susceptibility shows simple paramagnetism above 100 K.

  5. II-I2-IV-VI4 (II = Sr,Ba; I = Cu,Ag; IV = Ge,Sn; VI = S,Se): Earth-Abundant Chalcogenides for Thin Film Photovoltaics

    Science.gov (United States)

    Zhu, Tong; Huhn, William P.; Shin, Donghyeop; Mitzi, David B.; Blum, Volker; Saparov, Bayrammurad

    Chalcogenides such as CdTe, CIGSSe, and CZTSSe are successful for thin film photovoltaics (PV) but contain elements that are rare, toxic, or prone to the formation of detrimental antisite disorder. Recently, the BaCu2SnS4-xSex system has been shown to offer a prospective path to circumvent these problems. While early prototypes show efficiencies of a few percent, many avenues remain to optimize the materials, including the underlying chemical composition. In this work, we explore 16 compounds II-I2-IV-VI4 to help identify new candidate materials for PV, with predictions based on both known experimental and computationally derived structures that belong to five different space groups. We employ hybrid density functional theory (HSE06) to explore the band gap tunability by substituting different elements, and other characteristics such as the effective mass and the absorption coefficient. Compounds containing Cu (rather than Ag) are found to have direct or nearly direct band gaps. Depending on the compound, replacing S with Se leads to a decrease of the predicted band gaps by 0.2-0.8 eV and to somewhat decreasing hole effective masses.

  6. Synthesis, characterization, spectroscopic and catalytic oxidation studies of Fe(III), Ni(II), Co(III), V(IV) and U(VI) Schiff base complexes with N, O donor ligands derived from 2,3-diaminopyridine

    Energy Technology Data Exchange (ETDEWEB)

    Zabardasti, Abedien; Shangaie, Sayed Asad [Lorestan Univ., Khorramabad (Iran, Islamic Republic of). Dept. of Chemistry

    2016-10-15

    Fifteen new complexes of transition metals were designed using three Schiff base ligands and aldol condensation of 2,3-diaminopyridine with 5-R-2-hydroxybenzaldehyde (R = F, Cl, Br) in the 1:2 molar ratio. The tetradentate ligands N,N{sup '}-bis(5-R-2-hydroxybenzaldehyde) pyridine were acquired with the common formula H{sub 2}[(5-R-sal){sub 2}py] and characterized by IR, UV-Vis spectra, {sup 1}H-NMR and elemental analysis. These ligands produce 1:1 complexes M[(5-R-sal){sub 2}py] with Fe(III), Ni(II), Co(III), V(IV) and U(VI) metal ions. The electronic property and nature of complexes were identified by IR, UV-Vis spectra, elemental analysis, X-ray crystallography and cyclic voltammetric methods. The catalytic activity of complexes for epoxidation of styrene with UHP as primary oxidant at minimal temperature (10 C) has been planned. The spectral data of the ligands and their complexes are deliberate in connection with the structural changes which happen due to complex preparation. The electrochemical outcome has good conformability with what suggested for electronic interaction among metal center and ligand by the UV-Vis and IR measurements.

  7. Radiotherapeutic aspects of the treatment of adult patients with supradiaphragmatic Hodgkin's disease CS I/II. Pt. 1; Regarding the indications of primary and adjuvant radiotherapy. Fragen und Aspekte zur Radiotherapie bei erwachsenen Patienten mit lokalisierten supradiaphragmalen Stadien (CS I/II) eines Morbus Hodgkin. T. 1; Fragen und Aspekte zu den Indikationen einer primaeren und einer adjuvanten Radiotherapie

    Energy Technology Data Exchange (ETDEWEB)

    Glanzmann, C. (Universitaetsspital, Klinik fuer Radio-Onkologie, Zurich (Switzerland)); Luetolf, U.M. (Universitaetsspital, Klinik fuer Radio-Onkologie, Zurich (Switzerland))

    1993-08-01

    Randomized studies of chemo- vs radiotherapy in patients with PS I/II A and some PS III A have shown conflicting results. Patients with supra-diaphragmatic Hodkin's disease and CS I/II can be subdivided according to radiotherapy as: 1. Patients with a very low or a low recurrence risk of approximately 10 to 20%: Patients less than 40 years old and CS I/II A NS/LP with less than three involved regions and no bulky mediastinal mass and an ESR below 30 mm. In the other patients, primary irradiation of an extended mantle field without a staging laparotomy is an acceptable primary treatment, achieving a recurrence-free survival rate of approximately 80%. Another option is a staging laparotomy with splenectomy and a mantle radiotherapy for PS I/II. Few groups prefer primary chemotherapy alone or some type of a reduced chemotherapy with lesser toxicity combined with localized radiotherapy and long-term observations of a larger group of patients after the last type of treatment have to confirm the excellent early results. 2. Patients with an intermediate recurrence risk of approximately 20 to 40%: Patients, who do not belong to group one or group 3. Patients less than 50 years old with CS I/II and an ESR less than 50 mm and without bulky mediastinal involvement and with one of the following signs: Three involved regions or MC or one B symptom. A patient with more than one of these signs or with two or three B symptoms should be classified in group 3. For these patients, we recommend staging laparotomy and radiotherapy if PS I/II or primary chemotherapy with or without radiotherapy of the involved regions. 3. Patients with a high recurrence risk (40% or higher): (Abstract Truncated)

  8. Influence of {sup 18}F-FDG PET/CT on therapy management in patients with stage III/IV malignant melanoma

    Energy Technology Data Exchange (ETDEWEB)

    Schuele, Susann-Cathrin; Nikolaou, Konstantin; Pfannenberg, Christina [Eberhard-Karls-University Tuebingen, Department of Diagnostic and Interventional Radiology, Tuebingen (Germany); Eigentler, Thomas Kurt; Garbe, Claus [Eberhard-Karls-University Tuebingen, Skin Cancer Programme, Department of Dermatology, Tuebingen (Germany); Fougere, Christian la [Eberhard-Karls-University Tuebingen, Department of Nuclear Medicine, Tuebingen (Germany)

    2016-03-15

    To evaluate the influence of {sup 18}F-FDG PET/CT in comparison to CT alone on treatment decisions in patients with advanced melanoma and to analyse the 5-year survival data in comparison to literature data. Therapy management in 64 consecutive patients (primary staging n = 52; surveillance n = 12) with stage III/IV melanoma who underwent {sup 18}F-FDG PET/CT between 2004 and 2005 in our department was retrospectively analysed. Treatment decisions were made by two dermatooncologists for each patient twice, first based on the CT results and then based on the PET/CT results. Therapy changes based on the PET/CT results were classified as ''major'' (e.g. change from metastasectomy to systemic therapy) or ''minor'' (e.g. change from first to second line chemotherapy). The 5-year survival data of different patient cohorts were calculated. In the 52 patients in the primary staging group, the results of {sup 18}F-FDG PET/CT led to therapy change in 59 % and a major therapy change in 52 %. {sup 18}F-FDG PET/CT led to the avoidance of futile operations in 13 patients with suspicious lesions on CT that were deemed nontumorous on PET/CT. In the 12 patients in the surveillance group, the results of {sup 18}F-FDG PET/CT led to therapy change in 33 % and a major change in 17 %. The 5-year survival rates were 30 % in the entire cohort, 34 % in the primary staging group, and 17 % in the surveillance group. A significant overall survival benefit was observed in patients in whom {sup 18}F-FDG PET/CT excluded metastases or in whom metastases could be completely removed compared with patients who were not eligible for surgery (41 % vs. 10 %). Primary staging of patients with stage III/IV melanoma should be performed with {sup 18}F-FDG PET/CT, leading to higher diagnostic accuracy and enabling individualized therapeutic management, especially optimal patient selection for metastasectomy. This strategy may extend long-term survival even in patients

  9. Topotactic oxidation of TiGaPO-1, a pyridine-templated titanium gallophosphate with a new octahedral-tetrahedral 3-D framework structure containing Ti(III)/Ti(IV).

    Science.gov (United States)

    Chippindale, Ann M; Grimshaw, Mark R; Powell, Anthony V; Cowley, Andrew R

    2005-06-13

    The first 3-D open-framework TiGaPO complex, constructed from Ti(III)O(6), Ti(IV)O(6), GaO(4), and PO(4) polyhedra, contains pyridinium cations in a 1-D pore network and can be oxidized in air at 543 K with retention of the original framework structure.

  10. Structural characterization of M(IV)1-xLn(III)xO2-x/2 (M = Ce, Th) mixed-oxides prepared from oxalate precursors. Multi-parametric study of dissolution and microstructural evolution

    International Nuclear Information System (INIS)

    Horlait, D.

    2011-01-01

    In the framework of Gen IV program development, several physico-chemical properties of some foreseen fuels, including the chemical durability, have to be evaluated. In this aim, a study was undertaken on M(IV) 1-x Ln(III) x O 2 (M=Ce,Th) model compounds prepared from oxalate precursors. The fluorite-type structure of CeO 2 and ThO 2 remains stable up to x ≅ 0.4, the substitution of M(IV) by Ln(III) occurring simultaneously to the formation of oxygen vacancies. For higher x values, a cubic superstructure is formed as a result of oxygen vacancies ordering. The normalized dissolution rates of such solids were found to be strongly enhanced by the Ln(III) fraction. On the contrary, the nature of the M(IV) and Ln(III) elements did not modify significantly the normalized dissolution rates. The effect of temperature and acid concentration suggested the existence of surface-controlling dissolution reactions. Simultaneously, the microstructural evolution of both powdered and sintered samples revealed some important changes in the reactive surface during dissolution tests. ESEM images allowed observing the existence of preferential dissolution sites located at grains boundaries and around crystalline defects, leading to the formation of corrosion pits. In addition, the formation of gelatinous phases, acting as diffusion barriers (thus slowing down the dissolution process) was also evidenced. (author) [fr

  11. Study on the diagnostic value of determination of serum IV-C, PC III, HA, LN and PLD concentrations for hepatic fibrosis in patients with B hepatitis of various types

    International Nuclear Information System (INIS)

    Li Zhuocheng; Chen Jianxiong; Xiong Ying

    2004-01-01

    Objective: To investigate the changes of serum levels of collagen type IV(IV-C), procollagen type III (PC III), hyaluronic acid (HA), laminin (LN) and prolidase (PLD) and their relationship with hepatic fibrosis in patients with B hepatitis of different types. Methods: Serum levels of IV-C, PC III, HA, LN and PLD were measured with RIA in 39 controls and 103 patients with HBV infection of various types (including acute hepatitis AH n=19, chronic persistent hepatitis CPH n=29, Chronic active hepatitis CAH n=25 and liver cirrhosis LH n=30. Degree of hepatic fibrosis (Grade 0-4) was ascertained with liver biopsy in 35 patients (CAH16, LC19) and correlationship with the corresponding levels of these 5 serum markers was steadied. Results: 1) Serum levels of IV-C, PC III, HA, LN and PLD were significantly higher in patients with CAH and LC than those in other patients and controls (P 0.05). 3) Serum levels of these markers were all positively correlated with the degree of hepatic fibrosis noted in the biopsy specimens obtained from patients with CAH (n=16) and LC (n=19) (r=+0.64 - + 0.89, P<0.01). Conclusion: Serum levels of these markers could reflect the degree of hepatic fibrosis and severity of liver damage; determination of which was of diagnostic and even prognostic value. HA and LN appeared to be better correlated with degree of hepatic fibrosis than the remaining three markers did. (authors)

  12. 11. IV avati Draakoni galeriis...

    Index Scriptorium Estoniae

    2005-01-01

    Tanel Saare (sünd. 1979) näitus "Gott und huhn episode IV: seed shower". Eksponeeritakse väljavõtteid aktsioonidest aastatel 2000-2004 Turus, Nürnbergis, Berliinis, Lohusalus ja Soulis. Osa aktsioone toimus koos rühmitusega Non Grata

  13. Air quality III - experiments on emission and sensory perception of olfactory substances from ventilation systems. Final report; Luftqualitaet III - Experimentelle Untersuchungen zur Emission und Wahrnehmung von Geruchsstoffen aus Lueftungsgeraeten. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Fitzner, K.; Boettcher, O.

    2001-08-01

    Room air quality is highly important in Germany as people living here will spend 90 percent of their lives inside rooms. Air quality is defined to a large extent via the nose. This research project, in continuation of AiF 10525, involved investigations of materials and components of space HVAC systems with varying air temperatures, humidities and air flow rates for a subjective assessment of the air quality. The main goals were the definition of laws for identification of odorants and the derivation of laws for calculating pollutant-level-dependent ambient air rates for mechanically ventilated rooms. The experiments showed that both adsorption and desorption had a significant part in the addition of odorangs, causing deviations between theoretical and experimental values of felt air quality. The temperature and the relative humidity had an effect as well. Most measurements were made near the olfactory threshold, so that a number of participants were unable to complete the test. Later investigations will rely on analytical methods in addition to test persons. (orig.) [German] Das Thema der Luftqualitaet in Innenraeumen hat in Deutschland grosse Bedeutung, da sich die Bevoelkerung zu 90 Prozent ihres Lebens in Innenraeumen aufhaelt. Die Behaglichkeit der Atemluft wird in grossem Masse durch die mit der Nase wahrgenommenen Bestandteile der Luft beeinflusst. In Fortsetzung zum Forschungsvorhaben AiF 10525 wurden in diesem Forschungsvorhaben Untersuchungen mit Materialien und Komponenten aus RLT-Anlagen unter Veraenderung von Lufttemperatur, Luftfeuchte und Luftgeschwindigkeit zur subjektiven Beurteilung der Luftqualitaet durchgefuehrt. Die Hauptziele dieser Untersuchungen waren das Auffinden der Gesetzmaessigkeiten zur Wahrnehmung von Geruchsstoffen und das Ableiten von Rechenregeln zur Bestimmung verunreinigungslastabhaengiger Aussenluftraten fuer maschinell belueftete Raeume. Die Versuche zeigten, dass Adsorption und Desorption bei der Addition von Geruchsstoffen

  14. Sequential heavy metal extraction from dust precipitates and road sediments. Part 2. Sequential heavy metal extraction from urban dust; Sequentielle Schwermetallextraktion aus Staubniederschlaegen und Strassensedimenten. T. 2. Sequentielle Schwermetallextraktion von staedtischen Staeuben

    Energy Technology Data Exchange (ETDEWEB)

    Heiser, U.; Norra, S.; Stueben, D.; Wagner, M. von [Karlsruhe Univ. (T.H.) (Germany). Inst. fuer Petrographie und Geochemie

    1999-03-01

    For the application of our method for the sequential extraction of heavy metals from microsamples presented in part 1 (`Sequentielle Schwermetallextraktion von Mikroproben` - `Sequential Extraction of Heavy Metals from Micro Samples`) an investigation was carried out to evaluate airborne dust fallout and street sediments at two urban sites where different heavy metal immission rates occur due to traffic influence. In the street sediments the total concentrations of zinc, copper and lead was three to fivefold higher in the silt and clay fraction (<63 {mu}m) than in the particle size fraction (<1,12 mm), but showed nearly the same mobilisation behaviour. The dust samples showed equal mobilisation behaviour as the street sediments for copper and lead, while zinc was considerably more mobile in the dust samples: In extraction steps I-IV (I: mobile fraction; II: easily deliverable fraction; III: fraction bound to manganese oxides; IV: fraction bound organic to matter) zinc, copper and lead in street sediments, as well as copper and lead in dust samples, were dissolved to 40-70%, whereas about 80% of zinc in the dust samples was already dissolved in extraction step I. (orig.) [Deutsch] Mit Hilfe des in Teil 1 (`Sequentielle Schwermetallextraktion von Mikroproben`) vorgestellten Verfahrens zur sequentiellen Schwermetallextraktion von Mikroproben wurden die Mobilisierbarkeiten von Zink, Kupfer und Blei aus Staubniederschlaegen und aus der Schluff- und Tonfraktion von Strassensedimenten an zwei urbanen Standorten mit unterschiedlicher, verkehrsbedingter Schwermetallbelastung untersucht und miteinander verglichen. In Strassensedimenten wiesen Zink, Kupfer und Blei in der Schluff- und Tonfraktion drei- bis fuenffach hoehere Gesamtgehalte auf als die Korngroessenfraktion <1,12 mm, zeigten aber aehnliches Verhalten in der Mobilisierbarkeit. Bei den Staubproben war die Mobilisierbarkeit von Kupfer und Blei aehnlich wie in den Strassensedimenten, waehrend sich Zink als erheblich

  15. A novel Geobacteraceae-specific outer membrane protein J (OmpJ is essential for electron transport to Fe (III and Mn (IV oxides in Geobacter sulfurreducens

    Directory of Open Access Journals (Sweden)

    Schiffer Marianne

    2005-07-01

    Full Text Available Abstract Background Metal reduction is thought to take place at or near the bacterial outer membrane and, thus, outer membrane proteins in the model dissimilatory metal-reducing organism Geobacter sulfurreducens are of interest to understand the mechanisms of Fe(III reduction in the Geobacter species that are the predominant Fe(III reducers in many environments. Previous studies have implicated periplasmic and outer membrane cytochromes in electron transfer to metals. Here we show that the most abundant outer membrane protein of G. sulfurreducens, OmpJ, is not a cytochrome yet it is required for metal respiration. Results When outer membrane proteins of G. sulfurreducens were separated via SDS-PAGE, one protein, designated OmpJ (outer membrane protein J, was particularly abundant. The encoding gene, which was identified from mass spectrometry analysis of peptide fragments, is present in other Geobacteraceae, but not in organisms outside this family. The predicted localization and structure of the OmpJ protein suggested that it was a porin. Deletion of the ompJ gene in G. sulfurreducens produced a strain that grew as well as the wild-type strain with fumarate as the electron acceptor but could not grow with metals, such as soluble or insoluble Fe (III and insoluble Mn (IV oxide, as the electron acceptor. The heme c content in the mutant strain was ca. 50% of the wild-type and there was a widespread loss of multiple cytochromes from soluble and membrane fractions. Transmission electron microscopy analyses of mutant cells revealed an unusually enlarged periplasm, which is likely to trigger extracytoplasmic stress response mechanisms leading to the degradation of periplasmic and/or outer membrane proteins, such as cytochromes, required for metal reduction. Thus, the loss of the capacity for extracellular electron transport in the mutant could be due to the missing c-type cytochromes, or some more direct, but as yet unknown, role of OmpJ in metal

  16. Synopsis Session III and IV 'Water and ion mobility, up-scaling and implementation in model approaches'

    International Nuclear Information System (INIS)

    2013-01-01

    The contributions of Session III 'Water and ion mobility' and Session IV 'Up-scaling and implementation in model approaches' were merged for the proceedings volume. The range of scales we are interested in starts at molecular scale (1-3 Angstrom) to crystal scale (3 Angstrom-2 nm) over particle scale with 2-200 nm dimension to the particle/macro-aggregate scale with 0.2-1500 μm. Methods available to study the particle scale concerning pore structure and connectivity which determines water mobility are under dry conditions N 2 adsorption and Hg intrusion, whereas under the hydrated state methods like X-Ray tomography and X-ray and neutron scattering are available. Going down in size molecular modeling, x-ray and neutron diffraction modeling and water adsorption gravimetry are inter alia available. There are resolution limits to the methods presented in session II (e.g. BIB-SEM) on pore characterization as e.g. the clay matrix characterization being only possible under a limited clay induration and pore throats being on the limit of resolution. These pore throats however are very important for as macroscopic phenomena observed. One methodological approach to bridge the gap between the molecular/crystal scale and the particle/macro-aggregate scale (FIB-SEM) is to use complementary techniques as cryo-NMR, N 2 and water ad-/desorption and TEM

  17. A Thermodynamic Model for Acetate and Lactate Complexation with Am(III), Th(IV), Np(V)and U(V I) Valid to High Ionic Strength

    International Nuclear Information System (INIS)

    Moore, C.R.; Free, S.J.; Bynum, R.V.

    1999-01-01

    The organic ligands acetate, lactate, oxalate and EDTA have been identified as components of wastes targeted for disposal in the Waste Isolation Pilot Plant (WIPP) located in Southeastern New Mexico. The presence of these ligands may increase dissolved actinide concentrations and impact chemical radiation during transport. The current work considers the complexation of Am(III), Th (IV) , Np(V), and U(V I) with two of the organic ligands, acetate and lactate, in Na CI media from dilute through high concentration. A thermodynamic model for actinide complexation with the organic ligands has been developed based on the Pitzer activity coefficient formalism and the Harvie-Moller-Weare, Felmy-Weare database for describing brine evaporites systems. The model was parameterized using first apparent stability constant data from the literature. Because of complexation of other metal ions (Fe, Mg, Ni, Pb, etc.) present in the WIPP disposal room with the organic ligands, preliminary results from model calculations indicate the organic ligands do not significantly increase dissolved actinide concentrations

  18. Zr{sub 2}N{sub 2}Se. The first zirconium(IV) nitride selenide by the oxidation of zirconium(III) nitride with selenium

    Energy Technology Data Exchange (ETDEWEB)

    Lissner, Falk; Hack, Bettina; Schleid, Thomas [Institute for Inorganic Chemistry, University of Stuttgart (Germany); Lerch, Martin [Institute for Chemistry, Technical University of Berlin (Germany)

    2012-08-15

    The oxidation of zirconium(III) nitride (ZrN) with suitable amounts of selenium (Se) in the presence of sodium chloride (NaCl) as flux yields small yellow brownish platelets of the first zirconium(IV) nitride selenide with the composition Zr{sub 2}N{sub 2}Se. The new compound crystallizes in the hexagonal space group P6{sub 3}/mmc (no. 194) with a = 363.98(2) pm, c = 1316.41(9) pm (c/a = 3.617) and two formula units per unit cell. The crystallographically unique Zr{sup 4+} cations are surrounded by three selenide and four nitride anions in the shape of a capped trigonal antiprism. The Se{sup 2-} anions are coordinated by six Zr{sup 4+} cations as trigonal prism and the N{sup 3-} anions reside in tetrahedral surrounding of Zr{sup 4+} cations. These [NZr{sub 4}]{sup 13+} tetrahedra become interconnected via three edges each to form {sup 2}{sub ∞}{[(NZr_4_/_4)_2]"2"+} double layers parallel to the (001) plane, which are held together by monolayers of Se{sup 2-} anions. (Copyright copyright 2012 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  19. Two complexes of Pt(IV) and Au(III) with 2,2'-dipyridylamine and 2,2'-dipyridylaminide ligands.

    Science.gov (United States)

    Chernyshev, Alexander N; Kukushkin, Vadim Yu; Haukka, Matti

    2014-12-01

    Two noble metal complexes involving ancillary chloride ligands and chelating 2,2'-bipyridylamine (Hdpa) or its deprotonated derivative (dpa), namely [bis(pyridin-2-yl-κN)amine]tetrachloridoplatinum(IV), [PtCl4(C10H9N3)], and [bis(pyridin-2-yl-κN)aminido]dichloridogold(III), [AuCl2(C10H8N3)], are presented and structurally characterized. The metal atom in the former has a slightly distorted octahedral coordination environment, formed by four chloride ligands and two pyridyl N atoms of Hdpa, while the metal atom in the latter has a slightly distorted square-planar coordination environment, formed by two chloride ligands and two pyridyl N atoms of dpa. The difference in conjugation between the pyridine rings in normal and deprotonated 2,2'-dipyridylamine is discussed on the basis of the structural features of these complexes. The influence of weak interactions on the supramolecular structures of the complexes, providing one-dimensional chains of [PtCl4(C10H9N3)] and dimers of [AuCl2(C10H8N3)], are discussed.

  20. Daily concurrent chemoradiotherapy using superselective intra-arterial infusion via superficial temporal artery. Preoperative therapy for stage III, IV oral cancer

    International Nuclear Information System (INIS)

    Tohnai, Iwai; Mitsudo, Kenji; Nishiguchi, Hiroaki; Fukui, Takafumi; Yamamoto, Noriyuki; Ueda, Minoru; Fuwa, Nobukazu

    2005-01-01

    Recently, daily concurrent chemoradiotherapy using new superselective intra-arterial infusion via superficial temporal arterial artery is attracting attention. The catheter with curved tip is inserted superselectively to the feeding artery of the tumor via the superficial temporal artery, allowing long-term catheterization. Forty-one patients with stage III, IV oral cancer were treated. Radiotherapy (total dose: 40 Gy/4 weeks) and superselective intra-arterial infusion chemotherapy using docetaxel (total dose: 60 mg/m 2 , 15 mg/m 2 /week) and cisplatin (total dose: 100 mg/m 2 , 5 mg/m 2 /day) were concurrently performed daily, followed by surgery. In 35 patients, intra-arterial infusion was successful (success rate: 85.4%) and no major complication was observed. The clinical effects were complete response (CR) in 29 patients (82.9%), and pathological effects of resected tumor after surgery were pathological CR in 31 (88.6%). This method promises to be a new strategy of choice for the treatment of oral cancer. (author)

  1. Sport und soziale Integration

    OpenAIRE

    Turan, Günes

    2012-01-01

    Sport und soziale Integration : Chancen, Probleme und Perspektiven für Städte und Kommunen ; Tagungsband der gleichnamigen Tagung am 28. und 29. Juni 2011 in Augsburg / Helmut Altenberger ... (Hrsg.). - Hamburg : Feldhaus, Ed. Czwalina, 2012. - 104 S. - (Sportwissenschaft und Sportpraxis ; 161)

  2. Integration of the WJ IV, WISC-V, WISC-V Integrated, and WIAT-III into a School Neuropsychological Assessment Model

    Science.gov (United States)

    Miller, Daniel C.

    2015-01-01

    The Woodcock-Johnson-Fourth edition (WJ IV; Schrank, McGrew, & Mather, 2014a) and the Wechsler Intelligence Scale for Children-Fifth edition (WISC-V; Wechsler, 2014) are two of the major tests of cognitive abilities used in school psychology. The complete WJ IV battery includes the Woodcock-Johnson IV Tests of Cognitive Abilities (Schrank,…

  3. Advanced Gastric Cancer: Differentiation of Borrmann Type IV versus Borrmann Type III by Two-Phased Dynamic Multi-Detector Row CT with Use of the Water Filling Method

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Dae Jung; Yu, Jeong Sik; Lee, Sang Min; Kim, Joo Hee; Chung, Jae Joon; Kim, Ki Whang [Dept. of Radiology, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul (Korea, Republic of); Kang, Hae Youn [CHA Bundang Medical Center, CHA University, Seongnam (Korea, Republic of)

    2013-02-15

    To characterize Borrmann type IV from Borrmann type III advanced gastric cancer (AGC) by two-phased multi-detector row computed tomography (MDCT) using the water filling method. A total of 143 patients (pathologically confirmed Borrmann type III and IV - 100 and 43 patients), who underwent preoperative MDCT, were enrolled. Two radiologists, retrospectively and independently, determined tumor enhancement pattern using a 5-grade scale without clinical information. A weighted kappa test was applied for interobserver variability. The score of tumor enhancement pattern correlated with Borrmann type as determined by Spearman's correlation coefficient. The accuracy of differentiation of Borrmann type using MDCT was determined by receiver operating characteristic curves. Interobserver agreement (weighted kappa = 0.683) was substantial. The tumor enhancement pattern score showed a significant correlation with Borrmann type (reviewer 1, r = 0.591, p < 0.001; reviewer 2, r = 0.616, p < 0.001). The accuracy for differentiation of Borrmann type on MDCT was 0.86 (p < 0.001) in both reviewers. The sensitivity and specificity of the diagnosis of Borrmann type IV were 79% and 82% in reviewer 1, and 88% and 78% in reviewer 2, respectively. Dual-phased MDCT using the water filling method can differentiate between Borrmann type IV and III AGC with high accuracy.

  4. Phase 2 Study of Docetaxel, Cisplatin, and Concurrent Radiation for Technically Resectable Stage III-IV Squamous Cell Carcinoma of the Head and Neck

    Energy Technology Data Exchange (ETDEWEB)

    Inohara, Hidenori, E-mail: hinohara@ent.med.osaka-u.ac.jp [Department of Otorhinolaryngology—Head and Neck Surgery, Osaka University Faculty of Medicine, Suita, Osaka (Japan); Takenaka, Yukinori; Yoshii, Tadashi; Nakahara, Susumu; Yamamoto, Yoshifumi; Tomiyama, Yoichiro [Department of Otorhinolaryngology—Head and Neck Surgery, Osaka University Faculty of Medicine, Suita, Osaka (Japan); Seo, Yuji; Isohashi, Fumiaki; Suzuki, Osamu; Yoshioka, Yasuo; Sumida, Iori; Ogawa, Kazuhiko [Department of Radiation Oncology, Osaka University Faculty of Medicine, Suita, Osaka (Japan)

    2015-04-01

    Purpose: We investigated the efficacy and safety of weekly low-dose docetaxel and cisplatin therapy concurrent with conventionally fractionated radiation in patients with technically resectable stage III-IV squamous cell carcinoma of the head and neck. Methods and Materials: Between March 2004 and October 2011, we enrolled 117 patients, of whom 116 were analyzable (43 had oropharyngeal cancer, 54 had hypopharyngeal cancer, and 19 had laryngeal cancer), and 85 (73%) had stage IV disease. Radiation consisted of 66 Gy in 33 fractions. Docetaxel, 10 mg/m{sup 2}, followed by cisplatin, 20 mg/m{sup 2}, administered on the same day were given once a week for 6 cycles. The primary endpoint was overall complete response (CR) rate after chemoradiation therapy. Human papillomavirus (HPV) DNA in oropharyngeal cancer was examined by PCR. Results: Of 116 patients, 82 (71%) completed treatment per protocol; 102 (88%) received the full radiation therapy dose; and 90 (78%) and 12 (10%) patients received 6 and 5 chemotherapy cycles, respectively. Overall CR rate was 71%. After median follow-up of 50.9 months (range: 15.6-113.9 months for surviving patients), 2-year and 4-year overall survival rates were 82% and 68%, respectively. Cumulative 2-year and 4-year local failure rates were 27% and 28%, respectively, whereas distant metastasis rates were 15% and 22%, respectively. HPV status in oropharyngeal cancer was not associated with treatment efficacy. Acute toxicity included grade 3 and 4 in-field mucositis in 73% and 5% of patients, respectively, whereas myelosuppression and renal injury were minimal. No patients died of toxicity. Feeding tube dependence in 8% and tracheostomy in 1% of patients were evident at 2 years postchemoradiation therapy in patients who survived without local treatment failure. Conclusions: Local control and survival with this regimen were satisfactory. Although acute toxicity, such as mucositis, was common, late toxicity, such as laryngoesophageal

  5. The lanthanoid(III) chloride oxoselenates(IV) MCl[SeO3] (M = Sm - Lu) with HoCl[TeO3]- or B-type structure

    International Nuclear Information System (INIS)

    Lipp, C.; Schleid, T.

    2008-01-01

    The B-type lanthanoid(III) chloride oxoselenates(IV) MCl[SeO 3 ] (M = Sm - Lu) crystallize in the orthorhombic space group Pnma (no. 62) with Z = 4 in the structure type of HoCl[TeO 3 ]. Their lattice constants are decreasing following the lanthanoid contraction from a = 730.01(7), b = 707.90(7), c 895.64(9) pm for SmCl[SeO 3 ] to a = 714.63(7), b = 681.76(7), c = 864.05(9) pm for LuCl[SeO 3 ]. In contrast to NdCl[SeO 3 ], the only representative of the A-type structure, where the coordination numbers of the Nd 3+ cations are 7+2 and 8, the B-type structure is dominated by pentagonal bipyramids [MO 5 Cl 2 ] 9- (CN(M 3+ ) = 7), which are connected via trans-oriented O..O edges to ∞ 1 {[MO 4/2 e O 1/1 t Cl 2/1 t ] 5- } chains (e = edge-sharing, t = terminal) running parallel to the [010] direction. Their inclination relative to each other allows for an alternating interconnection of these chains via Cl - and ψ 1 -tetrahedral [SeO 3 ] 2- anions to form a three-dimensional structure. The distances within the [SeO 3 ] 2- groups are in the normal range (d(Se-O) = 165 - 172 pm), while those of the O 2- and Cl - anions to the central M 3+ cation diminish in dependence of the increasing atomic number (d(M-O) = 226 - 244 pm / 216 - 232 pm, d(M-Cl) 277 - 278 pm / 266 - 270 pm, M = Sm / Lu). For the synthesis of the chloride oxoselenates(IV) MCl[SeO 3 ] the respective lanthanoid sesquioxide (M 2 O 3 ) and selenium dioxide (SeO 2 ) were reacted with either an eutectic mixture of RbCl and LiCl or with the corresponding lanthanoid trichloride (MCl 3 ) in evacuated silica ampoules for either five weeks at 500 C or one week at 850 C. (orig.)

  6. Journey in guidelines for lipid management: From adult treatment panel (ATP-I to ATP-III and what to expect in ATP-IV

    Directory of Open Access Journals (Sweden)

    P G Talwalkar

    2013-01-01

    Full Text Available Adult Treatment Panel (ATP, an expert panel to supervise cholesterol management was set up under the aegis of National Cholesterol Education Program (NCEP in 1985. Since then NCEP-ATP has been revising and framing guidelines to enable clinician to deliver better treatment to cardiovascular patients and to educate general people. As a result, considerable reduction in cardiovascular related deaths has been observed in recent times. All three ATP guidelines viz. ATP-I, ATP-II and ATP-III have targeted low density lipoprotein as their primary goal. The ATP-III guideline was updated in the light of evidences from 5-major clinical trials and was released in 2004. It added therapeutic lifestyle changes, concept of risk equivalents, Framingham CHD-risk score non-high density lipoprotein cholesterol (non-HDL-C as secondary target and gave strong emphasis on metabolic risk factors. The earlier treat-to-target paradigm faced fierce criticism from clinicians across the globe because of insufficient proof of safety and benefits of treating patients with respect to an individual′s low density lipoprotein (LDL level. Further, demonstration of non-HDL-C and total cholesterol/HDL-C ratio as strong predictors of overall cardiovascular risk foresees new guidelines. A tailored-treatment approach was suggested instead of LDL-C target based treatment approach which was soundly based on direct clinical trials evidences and proposes treatment based on individual′s overall 5- to 10-year cardiovascular risk irrespective of LDL-C level, leading to lower number of people on high dose/s of statins. Recent report of the Cholesterol Treatment Trialist′s Collaborators meta-analysis strongly supported primary prevention of LDL with statins in low risk individuals and showed that its benefits completely outweighed its known hazards. Markers other than LDL-C like apolipoprotein B, non-HDL-C and total cholesterol/HDL-C ratio would take precedence in the risk assessment and

  7. Failure of misonidazole-sensitized radiotherapy to impact upon outcome among stage III-IV squamous cancers of the head and neck

    International Nuclear Information System (INIS)

    Fazekas, J.; Pajak, T.F.; Wasserman, T.; Marcial, V.; Davis, L.; Kramer, S.; Rotman, M.; Stetz, J.

    1987-01-01

    As part of the RTOG research effort in the treatment of advanced, inoperable squamous cancer of the head and neck region, the hypoxic cell sensitizer, misonidazole, was selected for investigation as an adjuvant to definitive irradiation. Based upon a pilot experience (78-02) showing a 67% complete response rate among 36 AJC Stage III-IV patients receiving full-dose irradiation and 6 weekly p.o. doses of misonidazole, a phase III trial was carried out from '79-'83. Three hundred and six patients were entered, 42% of whom had oropharyngeal primaries and with 78% of all cases representing T3 or T4 (inoperable) lesions. Only 16% of the entire series presented with N0 necks. Fractionation was altered among the misonidazole-receiving patients, in contrast to standard 5 treatments per week among control patients, such that 2 separate treatments were given on each day of p.o. misonidazole administration (2.0 gm/m2/wk X 6 doses, 2.5 Gy in a.m., 2.1 Gy in p.m.). Total tumor doses were identical among the two treatment arms except that a limitation of 40.0 Gy to spinal cord was specified for sensitized radiotherapy vs. 45.0 Gy for control patients. Primary tumor clearance was observed to be 55-60%, with minor variations according to tumor stage and site. The local regional control rate among radiotherapy-alone patients was 26% at 2 years compared to 22% (2 years) within the misonidazole-receiving group. Analysis of survival revealed no advantage to the sensitized patients, with 55 +/- 2% surviving 1 year and 22 +/- 1% living 3 years following treatment in both treatment categories. Distant metastases as first site of failure (12-13%) and the local failure among initial complete responders (46%) showed no advantage to the misonidazole group. Although a misonidazole dosage of 2.0 gm/m2/wk X 6 (12 gm/m2 total) is well tolerated, no clinical benefit was demonstrated in this randomized trial

  8. Three male patients with sporadic acute hepatitis E in Sendai, Japan, who were domestically infected with hepatitis E virus of genotype III or IV.

    Science.gov (United States)

    Yamamoto, Takeshi; Suzuki, Hiroshi; Toyota, Takayoshi; Takahashi, Masaharu; Okamoto, Hiroaki

    2004-01-01

    Recent studies indicate that hepatitis E virus (HEV) infection occurs not only in developing countries but also in industrialized nations. However, the characteristics of domestic infections of hepatitis E in Japan are not fully understood. We analyzed serum samples from 34 patients who were seen at a city hospital in Sendai, Japan, between January 1997 and December 2002, and who had been given the diagnosis of sporadic acute hepatitis of non-A, non-B, non-C etiology. Among these 34 patients, 3 (9%; all men; aged 54, 59, and 61 years) were positive for both IgG and IgM anti-HEV antibodies and for HEV RNA. The HEV isolates (HE-JAS1 and HE-JAS3) obtained from case 1 and case 3, respectively, segregated into genotype III; they had the highest nucleotide sequence identity, of 99.5% and 99.0%, with HE-JA7 and HE-JA8, respectively, both of which had been isolated in Iwate, a neighboring prefecture of Sendai. In contrast, the remaining HEV isolate (HE-JAS2), obtained from case 2, segregated into genotype IV; it had the highest nucleotide sequence identity, of 99.8% and 99.3%, with JKK-Sap and HE-JA3, respectively, both of which had been isolated in Hokkaido, Japan, although case 2 had never been to Hokkaido. Our three patients with hepatitis E had not traveled abroad in the preceding 1 year, had had no contact with pigs, and no history of blood transfusion. These results indicate that HEV should be considered as an etiological agent of acute hepatitis of non-A, non-B, non-C etiology in Japan. The risk factor(s) for acquiring domestic HEV infection in Japan needs to be clarified in future studies.

  9. Stent thrombosis: insights on outcomes, predictors and impact of dual antiplatelet therapy interruption from the SPIRIT II, SPIRIT III, SPIRIT IV and COMPARE trials.

    Science.gov (United States)

    Kedhi, Elvin; Stone, Gregg W; Kereiakes, Dean J; Serruys, Patrick W; Parise, Helen; Fahy, Martin; Simonton, Charles A; Sudhir, Krishnankutty; Sood, Poornima; Smits, Pieter C

    2012-09-01

    Recent studies have suggested that EES may reduce ST compared to PES, but no individual trial has been adequately powered for this endpoint. The incidence of stent thrombosis, as well as the impact of dual antiplatelet therapy (DAPT) discontinuation during the first two years following everolimus-eluting stent (EES) and paclitaxel-eluting stent (PES) deployment were therefore analysed from a pooled, patient-level database derived from four randomised clinical trials. Data from the SPIRIT II, SPIRIT III, SPIRIT IV and COMPARE trials (n=6,789 patients) were analysed. Two-year ST rates were determined using time-to-event methods and compared with the log-rank test. ST rates were also determined after DAPT discontinuation. EES compared to PES significantly reduced the two-year rates of ST (0.7% versus 2.3%, p=0.0001), including the interval rates of ST up to 30 days (0.2% versus 1.0%, p<0.0001), between 31 days and one year (0.2% versus 0.6%, p=0.02), and after one year (0.3% versus 0.8%, p=0.001). EES also reduced the two-year composite rate of cardiac death or MI (4.0% versus 6.6%, p=0.0001). Increased rates of ST after DAPT discontinuation beyond six months were observed in the PES cohort, but not in the EES cohort. In this large pooled analysis from four randomised trials, treatment with EES compared to PES significantly reduced the rates of ST through two years of follow-up, with a concomitant reduction in cardiac death or MI. DAPT discontinuation beyond six months may be safe with EES.

  10. Stages III and IV squamous cell carcinoma of the mouth: Three-year experience with superselective intraarterial chemotherapy using cisplatin prior to definitive treatment

    International Nuclear Information System (INIS)

    Hirai, Toshinori; Korogi, Yukunori; Hamatake, Satoshi; Nishimura, Ryuichi; Baba, Yuji; Takahashi, Mutsumasa; Uji, Yasuyoshi; Taen, Akira

    1999-01-01

    Purpose: This study was designed to assess the 3-year experience with superselective intraarterial chemotherapy prior to definitive treatment for stages III and IV squamous cell carcinomas of the mouth.Methods: Twenty-two patients prospectively received superselective intraarterial chemotherapy using relatively low-dose cisplatin via a transfemoral approach. The locations of the tumors were the tongue (n=12), gingiva (n=5), buccal mucosa (n=2), hard palate (n=1), floor of the mouth (n=1), and lip (n=1). After intraarterial chemotherapy, 21 patients underwent surgery (n=14), radiation therapy (n=6), or both (n=1). The survival rate of 25 patients who underwent surgery with/without radiationtherapy until 1992 at Kumamoto University Hospital was also evaluated as a historical control. The survival curve was calculated with the Kaplan-Meier method, and the statistical difference between survival curves was determined with the generalized Wilcoxon test.Results: The overall response rate was 95% [complete response (tumor completely resolved), 24%; partial response (tumor reduction ≥50%), 71%]. Fifty-two intraarterial infusions were performed without any catheter-related complications. Mild and transient local toxicity such as edema or mucositis of the infused area was relatively common. One patient died of renal failure from cisplatin. After a median follow-up of 20 months (range 2-41 months), the estimated 3-year survival rate for patients who underwent intraarterial chemotherapy plus surgery was 91%. The survival of the patients who underwent intraarterial chemotherapy plus surgery tended to be longer than that of the historical control.Conclusions: Early tumor reduction without delay of subsequent treatments can be obtained by intraarterial chemotherapy while minimizing complications and possibly improving survival. Further investigations of long-term survival with larger series need to be performed.

  11. [Three-month rehabilitation of a patient with the III, IV and VI cranial nerve damage caused by a neurosurgery of the left internal carotid artery aneurysm].

    Science.gov (United States)

    Mosiński, Eliasz; Kikowski, Łukasz; Irzmański, Robert

    Introduction: Oculomotor nerve palsy is an eye condition resulting from damage to the third cranial nerve or a branch thereof. Third nerve damage weakens the muscles innervated by the nerve . Also adversely affect the fourth and sixth nerve , causing impairment of their activity. Rehabilitation third nerve palsy is rarely described in the available literature . The whole process is very difficult , but the effects of physiotherapy is very beneficial for the patient. The aim:The assessment of the influence of the outpatient rehabilitation on the patient's condition after a three-month treatment and the use of physical therapy. Material and methods:Case studies of the 38-yerar-old patient after having operated a big aneurism of the left ICA, which was clipped. After the procedure, the III, IV and VI cranial nerves were deeply impaired and the amnesic aphasia occurred. The patient started the rehabilitation a month after the incident. To assess the process of rehabilitation, the own movement examination of the eyeball was implemented. Active and passive exercises, Tigger Point therapy, kinesiotaping, laser and electrostimulation were inserted. Results: The significant improvement of the eyeball movement has been proved on the basis of the same own examination. A physiotherapy has had a positive influence on the speech disorder, namely amnesic aphasia, and after the month of the rehabilitation it has been completely removed. The positive influence of the rehabilitation, which has been pointed out, is clinically essential. Conclusions: Obtained results have not been described in literature yet, that is why it is essential to widen further research and emphasise the importance of the rehabilitation, which is rarely implemented in an intense way in such medical conditions.

  12. Formation of Ti(III) and Ti(IV) states in Ti{sub 3}O{sub 5} nano- and microfibers obtained from hydrothermal annealing of C-doped TiO{sub 2} on Si

    Energy Technology Data Exchange (ETDEWEB)

    Stem, Nair, E-mail: nairstem@hotmail.com [Laboratório de Sistemas Integráveis (LSI), Escola Politécnica, Universidade de São Paulo, Av. Prof. Luciano Gualberto 158, 05508900 São Paulo, SP (Brazil); Souza, Michele L.; Araújo de Faria, Dalva Lúcia Araújo [Laboratório de Espectroscopia Molecular (LEM), Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, 05508900 São Paulo, SP (Brazil); Santos Filho, Sebastião G. dos [Laboratório de Sistemas Integráveis (LSI), Escola Politécnica, Universidade de São Paulo, Av. Prof. Luciano Gualberto 158, 05508900 São Paulo, SP (Brazil)

    2014-05-02

    In this work, it is investigated the formation of Ti(III) and Ti(IV) states at the surface and in the bulk of the Ti{sub 3}O{sub 5} material grown as meshes of nano- and micro-fibers obtained from hydrothermal annealing of C-doped TiO{sub 2} on Si. The topography and distribution of the fibers in the meshes were characterized by atomic force microscopy. When the fiber distribution was more compact, a higher photoluminescence signal at 850 nm (1.46 eV) was obtained, indicating the presence of a higher number of defects corresponding to the Ti(III) sites. From X-ray photoelectron spectroscopy, it was obtained a Ti(III)/Ti(IV) ratio much lower than the expected value for the Ti{sub 3}O{sub 5} phase (2 Ti(III): 1 Ti(IV)). The discrepancy was mainly attributed to the reaction of surface Ti(III) states of the Ti{sub 3}O{sub 5} fibers with water during the hydrothermal annealing, resulting in surface Ti(IV) with -OH radicals. On the other hand, X-ray photoelectron spectroscopy also indicated that substitutional and interstitial carbon atoms coexist, elemental carbon exists in the samples due to the co-deposition process and, as a result, the carbon inside of the TiO{sub 2} rutile lattice is acting as one of the precursors for the formation of Ti{sub 3}O{sub 5}. - Highlights: • Ti(III) states are detected inside of Ti{sub 3}O{sub 5} nano- and microfibers. • Ti(IV) states are predominantly detected on the surface of Ti{sub 3}O{sub 5} nano- and microfibers. • Photoluminescence at 850 nm for Ti{sub 3}O{sub 5} is due to defects associated to Ti(III). • Rutile possibly changes to C2/m Ti{sub 3}O{sub 5} during the hydrothermal annealing of C-doped TiO{sub 2}.

  13. Incorporation of μ3-CO3 into an MnIII/MnIV Mn12 cluster: {[(cyclam)MnIV(μ-O)2MnIII(H2O)(μ-OH)]6(μ3-CO3)2}Cl8·24H2O

    Science.gov (United States)

    Levaton, Ben B.; Olmstead, Marilyn M.

    2010-01-01

    The centrosymmetric title cluster, hexa­aquadi-μ3-carbonato-hexa­cyclamhexa-μ2-hydroxido-dodeca-μ2-oxido-hexa­mang­an­ese(IV)hexa­manganese(III) octa­chloride tetra­cosa­hydrate, [Mn12(CO3)2O12(OH)6(C10H24N4)6(H2O)6]Cl8·24H2O, has two μ3-CO3 groups that not only bridge octahedrally coordinated MnIII ions but also act as acceptors to two different kinds of hydrogen bonds. The carbonate anion is planar within experimental error and has an average C—O distance of 1.294 (4) Å. The crystal packing is stabilized by O—H⋯Cl, O—H⋯O, N—H⋯Cl and N—H⋯O hydrogen bonds. Two of the four independent chloride ions are disordered over five positions, and eight of the 12 independent water mol­ecules are disordered over 21 positions. PMID:21587382

  14. Syntheses and characterization of one-dimensional alkali metal antimony(III) thiostannates(IV), A{sub 2}Sb{sub 2}Sn{sub 3}S{sub 10} (A=K, Rb, Cs)

    Energy Technology Data Exchange (ETDEWEB)

    Yohannan, Jinu P.; Vidyasagar, Kanamaluru, E-mail: kvsagar@iitm.ac.in

    2015-01-15

    Three new isostructural quaternary antimony(III) thiostannates(IV), A{sub 2}Sb{sub 2}Sn{sub 3}S{sub 10} (A=K, Rb, Cs) have been synthesized by using alkali metal thiosulfate flux and structurally characterized by X-ray diffraction. Their structures contain A{sup +} ions around the [Sb{sub 2}Sn{sub 3}S{sub 10}]{sup 2−} chains, which are built from SbS{sub 3} pyramids, SnS{sub 6} octahedra and SnS{sub 4} tetrahedra. Raman and Mössbauer spectroscopic measurements corroborate the oxidation states and coordination environments of Sb(III) and Sn(IV). All three compounds are wide band gap semiconductors. Potassium compound undergoes partial exchange with strontium, cadmium and lead ions. - Graphical abstract: Syntheses, crystal structure, spectroscopic and partial ion-exchange studies of new one-dimensional alkali metal antimony(III) thiostannates(IV), A{sub 2}Sb{sub 2}Sn{sub 3}S{sub 10} (A=K, Rb, Cs) are described. - Highlights: • Syntheses of new alkali metal antimony(III) thiostannates(IV), A{sub 2}Sb{sub 2}Sn{sub 3}S{sub 10} (A=K, Rb, Cs). • Wide band gap semiconductors with one-dimensional structure. • Topotactic partial exchange of K{sup +} ions of K{sub 2}Sb{sub 2}Sn{sub 3}S{sub 10} with Sr{sup 2+}, Cd{sup 2+} and Pb{sup 2+} ions.

  15. The role of carboxylato ligand dissociation in the oxidation of chrysin with H2O2 catalysed by [Mn-2 (III, IV)(mu-CH3COO)(mu-O)(2)(Me(4)dtne)](PF6)(2)

    NARCIS (Netherlands)

    Abdolahzadeh, Shaghayegh; Boyle, Nicola M.; Hoogendijk, M. Lisa; Hage, Ronald; de Boer, Johannes W.; Browne, Wesley R.

    2014-01-01

    The aqueous and non-aqueous chemistry of the complex [Mn-2 (III,IV)(mu-CH3COO)(mu-O)(2)(Me(4)dtne)](PF6)(2) (where Me(4)dtne = 1,2-bis(4,7-dimethyl- 1,4,7-triazacyclonon-1-yl) ethane), which has been demonstrated as an exceptionally active catalyst in the bleaching of raw cotton and especially wood

  16. A new oxidimetric reagent: potassium dichromate in a strong phosphoric acid medium--VII. Photometric titration of vanadium(IV) and of cerium(III) alone and in mixtures with iroN(II).

    Science.gov (United States)

    Rao, G G; Rao, P K

    1967-01-01

    Vanadium(IV) can be accurately titrated with potassium dichromate in media containing phosphoric acid of 3-12M concentration: the change in absorption of vanadium(IV) is followed in the region 660 mmicro using a red filter. It is more convenient to carry out the titration in 3M phosphoric acid because at higher concentrations chloride, nitrate, cerium(III) and manganese(II) may interfere. Photoelcetric titration is more convenient than potentiometric because the former can be made in a 3M phosphoric acid medium, whereas the latter is possible only in 12M phosphoric acid. The simultaneous differential photometric titration of iron(II) and vanadium(IV) is also possible. Conditions have been found for the photometric titration of cerium(III) and of cerium(III) plus iron(II). The titration is carried out (at 450 mmicro or with a blue filter) in about 10.5M phosphoric acid. Application of the method to a cerium mineral is considered.

  17. Extração líquido-líquido de ferro(III e titânio(IV pelo ácido bis-(2-etil-hexil fosfórico (D2EHPA em meio de ácido sulfúrico Liquid-liquid extraction (LLE of Fe(III and Ti(IV by bis-(2-ethyl-hexyl phosphoric acid (D2EHPA in sulfuric acid medium

    Directory of Open Access Journals (Sweden)

    Glauco Corrêa da Silva

    2008-01-01

    Full Text Available This work presents a study on the separation of Fe(III and Ti(IV from sulfuric acid leaching solutions of ilmenite (FeTiO3 using liquid-liquid extraction with D2EHPA in n-dodecane as extracting agent. The distribution coefficients (K D of the elements related to free acidity and concentration of Fe(III and Ti(IV were determined. Free acidity was changed from 3x10-2 to 11.88 mol L-1 and D2EHPA concentration was fixed at 1.5 mol L-1. Recovery of final products as well as recycling of wastes generated in the process were also investigated. The LLE process as a feasible alternative to obtain high-purity TiO2.

  18. Hyperfractionated radiotherapy and simultaneous cisplatin for stage-III and -IV carcinomas of the head and neck. Long-term results including functional outcome

    International Nuclear Information System (INIS)

    Huguenin, P.; Glanzmann, C.; Taussky, D.; Luetolf, U.M.; Schmid, S.; Moe, K.

    1998-01-01

    Purpose: To assess the survival rate, the probability of local control, the patterns of relapse and late sequelae including self-reported quality of life in patients treated with hyperfractionated radiotherapy (RT) and simultaneous CDDP chemotherapy for stage-III to stage-IV carcinomas of the head and neck. Methods: From 1988 to 1994, 64 patients (median age 55.5 years) with carcinomas of different subsites, excluding the nasopharynx, were treated in a pilot study with 1.2 Gy bid (6 h interval; total dose 74.4 Gy) and simultaneous CDDP (20 mg/m 2 daily, 5 days in week 1 and 5) and followed at regular intervals. Overall survival and local control, as well as the rates of late toxicity, were estimated using the actuarial method. Median follow-up was 3.3 years for all and 5.2 years for surviving patients. To assess the quality of life, the EORTC QLQ-C 30 questionnaire and the H and N35 module questionnaire were sent to the patients surviving with no evidence of disease or second primary tumors; they were answered by 15/23 (67%). Results: Overall survival was 37% at 5 years, whereas disease-specific survival was 59%. Twenty-three patients died from uncontrolled head and neck cancer. Second primary tumors were observed in 13 patients, most frequently in the lung. Local control without salvage surgery was 74% at 5 years for all subsites and stages, and loco-regional disease-free survival was 72%. Eleven patients developed distant metastases, which was the only site of failure in 6 cases. Salvage surgery was successful in 2 cases. The actuarial estimates of ≥grade-3 late toxicity was 4% for the mandibular bone and 23% for dysphagia, and 50% of the patients experienced a permanent xerostomy. Self-reported global quality of life in surviving patients was good (mean 68 points on a scale 0 to 100); consequences of impaired salivary function had most impact on nutritional and social aspects. Conclusions: Hyperfractionated RT with concomitant CDDP is well tolerated and highly

  19. Decreased fracture rate, pharmacogenetics and BMD response in 79 Swedish children with osteogenesis imperfecta types I, III and IV treated with Pamidronate.

    Science.gov (United States)

    Lindahl, K; Kindmark, A; Rubin, C-J; Malmgren, B; Grigelioniene, G; Söderhäll, S; Ljunggren, Ö; Åström, E

    2016-06-01

    Osteogenesis imperfecta (OI) is an inherited heterogeneous bone fragility disorder, usually caused by collagen I mutations. It is well established that bisphosphonate treatment increases lumbar spine (LS) bone mineral density (BMD), as well as improves vertebral geometry in severe OI; however, fracture reduction has been difficult to prove, pharmacogenetic studies are scarce, and it is not known at which age, or severity of disease, treatment should be initiated. COL1A1 and COL1A2 were analyzed in 79 children with OI (type I n=33, type III n=25 and type IV n=21) treated with Pamidronate. Data on LS BMD, height, and radiologically confirmed non-vertebral and vertebral fractures were collected prior to, and at several time points during treatment. An increase in LS BMD Z-score was observed for all types of OI, and a negative correlation to Δ LS BMD was observed for both age and LS BMD Z-score at treatment initiation. Supine height Z-scores were not affected by Pamidronate treatment, The fracture rate was reduced for all OI types at all time points during treatment (overall p4yrs Pamidronate. Twice as many boys as girls with OI type I were treated with Pamidronate, and the fracture rate the year prior treatment was 2.2 times higher for boys (p=0.0236). Greater Δ LS BMD, but smaller Δ fracture numbers were observed on Pamidronate for helical glycine mutations in COL1A1 vs. COL1A2. Vertebral compression fractures did not progress in any individual during treatment; however, they did not improve in 9%, and these individuals were all >11years of age at treatment initiation (p<0.0001). Pamidronate treatment in children with all types of OI increased LS BMD, decreased fracture rate, and improved vertebral compression fractures. Fracture reduction was prompt and maintained during treatment, irrespective of age at treatment initiation and collagen I mutation type. Copyright © 2016 Elsevier Inc. All rights reserved.

  20. A phase 2, multicenter, open-label study of sepantronium bromide (YM155) plus docetaxel in patients with stage III (unresectable) or stage IV melanoma

    International Nuclear Information System (INIS)

    Kudchadkar, Ragini; Ernst, Scott; Chmielowski, Bartosz; Redman, Bruce G; Steinberg, Joyce; Keating, Anne; Jie, Fei; Chen, Caroline; Gonzalez, Rene; Weber, Jeffrey

    2015-01-01

    Survivin is a microtubule-associated protein believed to be involved in preserving cell viability and regulating tumor cell mitosis, and it is overexpressed in many primary tumor types, including melanoma. YM155 is a first-in-class survivin suppressant. The purpose of this Phase 2 study was to evaluate the 6-month progression-free survival (PFS) rate in patients with unresectable Stage III or IV melanoma receiving a combination of YM155 plus docetaxel. The study had two parts: Part 1 established the dose of docetaxel that was tolerable in combination with YM155, and Part 2 evaluated the tolerable docetaxel dose (75 mg/m 2 ) in combination with YM155 (5 mg/m 2 per day continuous infusion over 168 h every 3 weeks). The primary endpoint was 6-month PFS rate. Secondary endpoints were objective response rate (ORR), 1-year overall survival (OS) rate, time from first response to progression, clinical benefit rate (CBR), and safety. Sixty-four patients with metastatic melanoma were treated with docetaxel and YM155. Eight patients received an initial docetaxel dose of 100 mg/m 2 and 56 patients received 75 mg/m 2 of docetaxel. Six-month PFS rate per Independent Review Committee (IRC) was 34.8% (n = 64; 95% CI, 21.3–48.6%), and per Investigator was 31.3% (n = 64; 95% CI, 19.5–43.9%). The best ORR (complete response [CR] + partial response [PR]) per IRC was 12.5% (8/64). The stable disease (SD) rate was 51.6% (33/64), leading to a CBR (CR + PR + SD) of 64.1% (41/64). Estimated probability of 1-year survival was 56.3%. YM155 is a novel agent showing modest activity when combined with docetaxel for treating patients with melanoma. YM155 was generally well tolerated, but the predetermined primary efficacy endpoint (i.e., 6-month PFS rate ≥20%) was not achieved

  1. Front-line intraperitoneal versus intravenous chemotherapy in stage III-IV epithelial ovarian, tubal, and peritoneal cancer with minimal residual disease: a competing risk analysis.

    Science.gov (United States)

    Chang, Yen-Hou; Li, Wai-Hou; Chang, Yi; Peng, Chia-Wen; Cheng, Ching-Hsuan; Chang, Wei-Pin; Chuang, Chi-Mu

    2016-03-17

    In the analysis of survival data for cancer patients, the problem of competing risks is often ignored. Competing risks have been recognized as a special case of time-to-event analysis. The conventional techniques for time-to-event analysis applied in the presence of competing risks often give biased or uninterpretable results. Using a prospectively collected administrative health care database in a single institution, we identified patients diagnosed with stage III or IV primary epithelial ovarian, tubal, and peritoneal cancers with minimal residual disease after primary cytoreductive surgery between 1995 and 2012. Here, we sought to evaluate whether intraperitoneal chemotherapy outperforms intravenous chemotherapy in the presence of competing risks. Unadjusted and multivariable subdistribution hazards models were applied to this database with two types of competing risks (cancer-specific mortality and other-cause mortality) coded to measure the relative effects of intraperitoneal chemotherapy. A total of 1263 patients were recruited as the initial cohort. After propensity score matching, 381 patients in each arm entered into final competing risk analysis. Cumulative incidence estimates for cancer-specific mortality were statistically significantly lower (p = 0.017, Gray test) in patients receiving intraperitoneal chemotherapy (5-year estimates, 34.5%; 95% confidence interval [CI], 29.5-39.6%, and 10-year estimates, 60.7%; 95% CI, 52.2-68.0%) versus intravenous chemotherapy (5-year estimates, 41.3%; 95% CI, 36.2-46.3%, and 10-year estimates, 67.5%, 95% CI, 61.6-72.7%). In subdistribution hazards analysis, for cancer-specific mortality, intraperitoneal chemotherapy outperforms intravenous chemotherapy (Subdistribution hazard ratio, 0.82; 95% CI, 0.70-0.96) after correcting other covariates. In conclusion, results from this comparative effectiveness study provide supportive evidence for previous published randomized trials that intraperitoneal chemotherapy

  2. Extraction of Eu(III) and Th(IV) with TBP in n-dodecane in the presence of nitric acid and the thermodynamic activity of the TBP in the system

    International Nuclear Information System (INIS)

    Santos, F.S.M. dos.

    1983-02-01

    A qualitative description of the behavior of distribution coefficients of nitric acid, Th(IV) and Eu(III) separately in the system HNO 3 -H 2 O-TBP-n-dodecane and the effect of the temperature in the distribution coefficient of Th(IV) are presented. The distribution coefficient of Eu(III) between aqueous solutions nitric acid and solutions of TBP in n-dodecane are measured. Since the composition of the extracted Eu(III) complex is known, the theoretical course of the dependency of the distribution coefficient on the TBP concentration can be predicted. Deviations of experimental dependencies from theoretical ones give them information about the thermodynamic activity of TBP in the organic phase. A mathematical description for the distribution coefficients of Eu(III) and HNO 3 in the mentioned system was sugested. This description will make possible an avaliation of the behavior of the activity coefficients of TBP in the organic phase. (A.R.H.) [pt

  3. The energy consumption of traffic 1990 - 2035 - Results of scenarios I - IV; Der Energieverbrauch des Verkehrs 1990 - 2035. Ergebnisse der Szenarien I bis IV und der zugehoerigen Sensitivitaeten 'BIP hoch', 'Preise hoch' und 'Klima waermer'

    Energy Technology Data Exchange (ETDEWEB)

    Keller, M.

    2007-07-01

    This comprehensive report for the Swiss Federal Office of Energy (SFOE) presents four scenarios concerning the development of energy consumption in the traffic sector for the period 1990 - 2035. The four scenarios - status quo, increased co-operation between the state and the economy with various energy levies, global reduction of energy consumption and, finally, scenario IV 'on the way to a 2000-Watt Society' - are briefly described. The areas examined include road, rail and air traffic as well as 'off-road' traffic. Infrastructure developments are commented on. The four scenarios are examined for various sensitivities including high gross domestic product GDP, high prices and warmer climate. Alternative fuels are looked at, as are further factors such as fuel tourism, pollutant emissions and costs. The results of the sensitivity analyses are compared and discussed and the necessary instruments are examined. This comprehensive report is completed with a comprehensive appendix

  4. Granisetron, Aprepitant, and Dexamethasone in Preventing Nausea and Vomiting in Patients Receiving Chemotherapy for Stage II, III, or IV Ovarian Cancer

    Science.gov (United States)

    2018-04-24

    Nausea and Vomiting; Ovarian Brenner Tumor; Ovarian Clear Cell Cystadenocarcinoma; Ovarian Endometrioid Adenocarcinoma; Ovarian Mucinous Cystadenocarcinoma; Ovarian Seromucinous Carcinoma; Ovarian Serous Cystadenocarcinoma; Stage II Ovarian Cancer; Stage IIA Fallopian Tube Cancer; Stage IIA Ovarian Cancer; Stage IIB Fallopian Tube Cancer; Stage IIB Ovarian Cancer; Stage IIC Fallopian Tube Cancer; Stage IIC Ovarian Cancer; Stage IIIA Fallopian Tube Cancer; Stage IIIA Ovarian Cancer; Stage IIIA Primary Peritoneal Cancer; Stage IIIB Fallopian Tube Cancer; Stage IIIB Ovarian Cancer; Stage IIIB Primary Peritoneal Cancer; Stage IIIC Fallopian Tube Cancer; Stage IIIC Ovarian Cancer; Stage IIIC Primary Peritoneal Cancer; Stage IV Fallopian Tube Cancer; Stage IV Ovarian Cancer; Stage IV Primary Peritoneal Cancer; Undifferentiated Ovarian Carcinoma

  5. High response rates following paclitaxel/5-FU and simultaneous radiotherapy in advanced head and neck carcinoma; Hohe Remissionsraten unter simultaner Radio- und Chemotherapie mit Paclitaxel/5-FU in der Behandlung fortgeschrittener Kopf-Hals-Tumoren

    Energy Technology Data Exchange (ETDEWEB)

    Schroeder, M.; Westerhausen, M. [St.-Johannes-Hospital, Duisburg (Germany). Medizinische Klinik II; Makoski, H.B. [Staedtische Kliniken, Duisburg (Germany). Radioonkologie; Sesterhenn, K. [St. Anna-Krankenhaus, Duisburg (Germany). HNO-Klinik; Schroeder, R. [Bristol Myers Squibb, Muenchen (Germany). Dept. of Oncology

    1997-11-01

    applizierter Strahlentherapie. Mit dieser multimodalen Therapiestrategie einschliesslich einer interponierten chirurgischen Massnahme haben wir fuer Patienten mit einem Stadium III/IV Fuenf-Jahres-Ueberlebenszeiten von 60% berichtet. Paclitaxel, ein neues Chemotherapeutikum, erreichte im Rahmen einer ECOG-Studie in Monotherapieform eine Ansprechrate von 40%. Patienten und Methoden: Zwischen 1994 und 1997 wurden 30 Patienten mit vorbestehenden Kontraindikationen gegen Cisplatin mit Paclitaxel/5-FU und gleichzeitiger Bestrahlung in einem neoadjuvanten und postoperativ adjuvanten Therapieschema behandelt. Die Patienten erhielten Paclitaxel 175 mg/m{sup 2} an Tag 1+29 und 5-FU als 120stuendige Dauerinfusion in der Dosis 1000 mg/m{sup 2}/d. Die Bestrahlungsdosis betrug praeoperativ 40 und postoperativ 30 Gy. Alle 30 bisher so behandelten Patienten erreichten eine komplette Remission (histologisch operativ gesichert) nach Abschluss des gesamten Behandlungskonzepts. Ergebnisse: Bis heute leben 23/30 Patienten rezidiv/bzw. tumorfrei. In einem Nachbeobachtungszeitraum zwischen 6 und 34 Monaten entwickelten 4 Patienten eine zweite Neoplasie im Bereich der Rauch-Schluckstrasse (Bronchial-Ca., Oesophagus-Ca.), 3 Patienten erlitten ein lokales Rezidiv. Die Gesamttoxizitaet war moderat (Haematotoxizitaet, Neurotoxizitaet) und gut managebar mit supportiven Massnahmen (z.B. PEG-Sonde). Schlussfolgerung: Unsere praeliminaren Ergebnisse der kombinierten Behandlung der fortgeschrittenenen Kopf-Hals-Tumore mit Taxol/5-FU und Strahlentherapie und Operation sind sehr vielversprechend und identisch mit den Behandlungsergebnissen mit Cisplatin/5-FU. (orig.)

  6. Charakter Marias. - Darbringung Jesu im Tempel. II. Dogmatik. - Demut Mariens. I. Dogmatik. - Ehe. III. Dogmatik. - Engel/Erzengel. II. Dogmatik. - Erlösungsordnung. - Eschatologie. - Evangelisation. - Gericht. - Gnadenthron. - Gotteskind. - Gottesschau. - Häresie. - Heilsplan Gottes. - Himmelfahrt Mariae. I. Dogmatik. - Hingabe Marias. - Hoffnung. - Inkulturation. - Jesus Christus. - Josephsehe. - Jungfräulichkeit. II. Dogmatik. - Jungfräulichkeitsgelübde. - Jungfrau und Mutter. - Menschwerdung. II. Dogmatik. - Mitwirken Mariens. - Münzen. - Nachfolge Marias. - Nächstenliebe Marias. - Ohnmacht Mariens. I. Dogmatik

    OpenAIRE

    Ziegenaus, Anton

    1992-01-01

    Charakter Marias. - Darbringung Jesu im Tempel. II. Dogmatik. - Demut Mariens. I. Dogmatik. - Ehe. III. Dogmatik. - Engel/Erzengel. II. Dogmatik. - Erlösungsordnung. - Eschatologie. - Evangelisation. - Gericht. - Gnadenthron. - Gotteskind. - Gottesschau. - Häresie. - Heilsplan Gottes. - Himmelfahrt Mariae. I. Dogmatik. - Hingabe Marias. - Hoffnung. - Inkulturation. - Jesus Christus. - Josephsehe. - Jungfräulichkeit. II. Dogmatik. - Jungfräulichkeitsgelübde. - Jungfrau und Mutter. - Menschwerd...

  7. Spectroscopic investigations on the complexation of Cm(III) and Eu(III) with organic model ligands and their binding mode in human urine (in vitro); Spektroskopische Untersuchungen zur Komplexbildung von Cm(III) und Eu(III) mit organischen Modellliganden sowie ihrer chemischen Bindungsform in menschlichem Urin (in vitro)

    Energy Technology Data Exchange (ETDEWEB)

    Heller, Anne

    2011-10-26

    In case of incorporation, trivalent actinides (An(III)) and lanthanides (Ln(III)) pose a serious health risk to humans. An(III) are artificial, highly radioactive elements which are mainly produced during the nuclear fuel cycle in nuclear power plants. Via hazardous accidents or nonprofessional storage of radioactive waste, they can be released in the environment and enter the human food chain. In contrast, Ln(III) are nonradioactive, naturally occurring elements with multiple applications in technique and medicine. Consequently it is possible that humans get in contact and incorporate both, An(III) and Ln(III). Therefore, it is of particular importance to elucidate the behaviour of these elements in the human body. While macroscopic processes such as distribution, accumulation and excretion are studied quite well, knowledge about the chemical binding form (speciation) of An(III) and Ln(III) in various body fluids is still sparse. In the present work, for the first time, the speciation of Cm(III) and Eu(III) in natural human urine (in vitro) has been investigated spectroscopically and the formed complex identified. For this purpose, also basic investigations on the complex formation of Cm(III) and Eu(III) in synthetic model urine as well as with the urinary relevant, organic model ligands urea, alanine, phenylalanine, threonine and citrate have been performed and the previously unknown complex stability constants determined. Finally, all experimental results were compared to literature data and predictions calculated by thermodynamic modelling. Since both, Cm(III) and Eu(III), exhibit unique luminescence properties, particularly the suitability of time-resolved laser-induced fluorescence spectroscopy (TRLFS) could be demonstrated as a method to investigate these metal ions in untreated, complex biofluids. The results of this work provide new scientific findings on the biochemical reactions of An(III) and Ln(III) in human body fluids on a molecular scale and

  8. Meeting of the Task Force 'Information Systems in Soil Science', Freising-Weihenstephan, March 20-21, 1986. - Joint meeting of the Commissions V and VI, Osnabrueck, February 17-18, 1987. - Joint meeting of the Commissions I and IV, Bayreuth, April 23-24, 1987. Papers. Treffen der Arbeitsgruppe Informationssysteme in der Bodenkunde, 20. und 21. Maerz 1986, Freising-Weihenstephan. - Gemeinsame Sitzung der Kommissionen V und VI, 17. und 18. Februar 1987, Osnabrueck. - Gemeinsame Sitzung der Kommissionen I und IV, 23. und 24. April 1987, Bayreuth. Referate

    Energy Technology Data Exchange (ETDEWEB)

    1987-01-01

    This volume contains 9 contributions of the Task Force 'Information Systems in Soil Science' (meeting at Freising-Weihenstephan from March 20-21, 1986), 49 papers of Commissions V and VI (meeting at Osnabrueck from February 17-18, 1987), and 17 papers of Commissions I and IV (meeting at Bayreuth from April 23-24, 1987). From the subject areas 'Heavy Metal Pollution of Soils' and 'Land Revegetation after Construction of District Heat Pipelines', six contributions have been separately recorded in the ENERGY data base.

  9. A randomised trial of accelerated and conventional radiotherapy for stage III and IV squamous carcinoma of the head and neck: a Trans-Tasman Radiation Oncology Group Study

    International Nuclear Information System (INIS)

    Poulsen, Michael G.; Denham, James W.; Peters, Lester J.; Lamb, David S.; Spry, Nigel A.; Hindley, Andrew; Krawitz, Hedley; Hamilton, Chris; Keller, Jacqui; Tripcony, Lee; Walker, Quenten

    2001-01-01

    Purpose: The aims of this randomized controlled trial were to determine whether there were differences in the disease-free survival (DFS) and toxicity between conventional radiotherapy (CRT) and a continuous 3 week accelerated radiotherapy regimen (ART) in stage III and IV squamous cell carcinoma of the oral cavity, oropharynx, larynx and hypopharynx. Patients and methods: Patients from 14 centres throughout Australia and New Zealand were randomly assigned to either CRT, using a single 2 Gy/day to a dose of 70 Gy in 35 fractions in 49 days or to ART, using 1.8 Gy twice a day to a dose of 59.4 Gy in 33 fractions in 24 days. Treatment allocation was stratified for site and stage. The accrual began in 1991 and the trial was closed in 1998 when the target of 350 patients was reached. Results: The median potential follow-up time was 53 months (range, 14-101). The DFS at 5 years was 41% (95% CI, 33-50%) for ART and 35% (95% CI, 27-43%) for CRT (P=0.323) and the hazard ratio was 0.87 in favour of ART (95% CI, 0.66-1.15). The 5-year disease-specific survival rates were 40% for CRT and 46% for ART (P=0.398) and the loco-regional control was 47% for CRT vs. 52% for ART (P=0.300). The respective hazard ratios were 0.88 (95% CI, 0.65-1.2) and 0.85 (0.62-1.16), favouring the accelerated arm. In the ART arm, confluent mucositis was more severe (94 vs. 71%; P<0.001) and peaked about 3 weeks earlier than in the CRT arm, but healing appeared complete in all cases. There were statistically significant reductions in the probability of grade 2 or greater late soft tissue effects over time in the ART arm (P<0.05), except for the mucous membrane where late effects were similar in both arms. Conclusions: Differences in DFS, disease-specific survival and loco-regional control have not been demonstrated. ART resulted in more acute mucosal toxicity, but this did not result in greater prolongation of the treatment time compared with the CRT arm. There were less late effects in the ART arm

  10. Expression, crystallization and preliminary X-ray analysis of the extracellular Ig modules I–IV and F3 modules I–III of the neural cell-adhesion molecule L1

    International Nuclear Information System (INIS)

    Kulahin, Nikolaj; Kasper, Christina; Kristensen, Ole; Kastrup, Jette Sandholm; Berezin, Vladimir; Bock, Elisabeth; Gajhede, Michael

    2005-01-01

    Mouse L1 modules Ig I–IV and F3 I–III were crystallized. The crystals diffracted X-rays to 3.5 and 2.8 Å resolution, respectively. Four amino-terminal immunoglobulin (Ig) modules and three fibronectin type III (F3) modules of the mouse neural cell-adhesion molecule L1 have been expressed in Drosophila S2 cells. The Ig modules I–IV of L1 crystallized in a trigonal space group, with unit-cell parameters a = b = 239.6, c = 99.3 Å, and the crystals diffracted X-rays to a resolution of about 3.5 Å. The F3 modules I–III of L1 crystallized in a tetragonal space group, with unit-cell parameters a = b = 80.1, c = 131 Å, and the crystals diffracted X-rays to 2.8 Å resolution. This is a step towards the structure determination of the multimodular constructs of the neural cell-adhesion molecule L1 in order to understand the function of L1 on a structural basis

  11. Cisplatin, Intensity-Modulated Radiation Therapy, and Pembrolizumab in Treating Patients With Stage III-IV Head and Neck Squamous Cell Carcinoma

    Science.gov (United States)

    2018-05-18

    CDKN2A-p16 Negative; Stage III Hypopharyngeal Squamous Cell Carcinoma AJCC v7; Stage III Laryngeal Squamous Cell Carcinoma AJCC v6 and v7; Stage III Oral Cavity Squamous Cell Carcinoma AJCC v6 and v7; Stage III Oropharyngeal Squamous Cell Carcinoma AJCC v7; Stage IVA Hypopharyngeal Squamous Cell Carcinoma AJCC v7; Stage IVA Laryngeal Squamous Cell Carcinoma AJCC v7; Stage IVA Oral Cavity Squamous Cell Carcinoma AJCC v6 and v7; Stage IVA Oropharyngeal Squamous Cell Carcinoma AJCC v7; Stage IVB Hypopharyngeal Squamous Cell Carcinoma AJCC v7; Stage IVB Laryngeal Squamous Cell Carcinoma AJCC v7; Stage IVB Oral Cavity Squamous Cell Carcinoma AJCC v6 and v7; Stage IVB Oropharyngeal Squamous Cell Carcinoma AJCC v7

  12. Liquid plugs bouncing against a solid basis, comparison of SIMMER-III and PLEXUS results; Zum Aufprall von Fluessigkeitssaeulen auf starre Hindernisse Vergleich von SIMMER-III und PLEXUS Ergebnissen

    Energy Technology Data Exchange (ETDEWEB)

    Maschek, W.; Arnecke, G.; Flad, M.

    1995-08-01

    The SIMMER III code is being tested by application to problems of reactor accidents. The fluid dynamics/thermohydraulics part of the code can be applied also to evaporation/condensation, melt, and freezing phenomena. For a liquid plug bouncing against a solid basis, the momentum transfer is calculated. PLEXUS results turn out to be in significant disagreement with the SIMMER calculations. (orig.)

  13. Ehlers-Danlos syndrome type IV : unusual congenital anomalies in a mother and son with a COL3A1 mutation and a normal collagen III protein profile

    NARCIS (Netherlands)

    Kroes, HY; Pals, G; van Essen, AJ

    A mother and son with Ehlers-Danlos syndrome (EDS) type IV and unusual congenital anomalies are described. The congenital anomalies include, in the mother, amniotic band-like constrictions on one hand, a unilateral clubfoot, and macrocephaly owing to normal-pressure hydrocephaly and, in the son, an

  14. Ehlers-Danlos Syndrome type IV: a multi-exon deletion in one of the two COL3A1 alleles affecting structure, stability, and processing of type III procollagen

    International Nuclear Information System (INIS)

    Superti-Furga, A.; Gugler, E.; Gitzelmann, R.; Steinmann, B.

    1988-01-01

    The authors have studied a patient with severe, dominantly inherited Ehlers-Danlos syndrome type IV. The results indicate that this patient carries a deletion of 3.3 kilobase pairs in the triple helical coding domain of one of the two alleles for the pro-α-chains of type III collagen (COL3A1). His cultured skin fibroblasts contain equal amounts of normal length mRNA and of mRNA shortened by approximately 600 bases, and synthesize both normal and shortened pro-α1(III)-chains. In procollagen molecules containing one or more shortened chains, a triple helix is formed with a length of only about 780 amino acids. The mutant procollagen molecules have decreased thermal stability, are less efficiently secreted, and are not processed as their normal counterpart. The deletion in this family is the first mutation to be described in COL3A1

  15. Digitalisierung und Selbstbestimmung

    Directory of Open Access Journals (Sweden)

    Bezemek, Christoph

    2017-12-01

    Full Text Available Der vorliegende Beitrag skizziert das Zusammenspiel von Digitalisierung und individueller Selbstbestimmung, stellt die Frage, welche Herausforderungen dieses Zusammenspiel birgt und diskutiert, wie ihnen begegnet werden kann.

  16. Emotion, Motivation und Volition

    OpenAIRE

    Ulich, Dieter

    1996-01-01

    Emotion, Motivation und Volition / D. Ulich ; V. Brandstätter ; P. M. Gollwitzer. - In: Psychologie / hrsg. von Dietrich Dörner ... - 2., überarb. und erw. Aufl. - Stuttgart u.a. : Kohlhammer, 1996. - S. 115-135

  17. MODERATE C IV ABSORBER SYSTEMS REQUIRE 10{sup 12} M{sub Sun} DARK MATTER HALOS AT z {approx} 2.3: A CROSS-CORRELATION STUDY OF C IV ABSORBER SYSTEMS AND QUASARS IN SDSS-III BOSS DR9

    Energy Technology Data Exchange (ETDEWEB)

    Vikas, Shailendra; Wood-Vasey, W. Michael [Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, PA 15260 (United States); Lundgren, Britt [Department of Physics, Yale University, New Haven, CT 06511 (United States); Ross, Nicholas P. [Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 92420 (United States); Myers, Adam D. [Department of Physics and Astronomy, University of Wyoming, Laramie, WY 82071 (United States); AlSayyad, Yusra [Department of Astronomy, University of Washington, Seattle, WA 98195 (United States); York, Donald G. [Department of Astronomy, University of Chicago, 5640 S. Ellis Ave, Chicago, IL 60637 (United States); Schneider, Donald P. [Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States); Brinkmann, J.; Bizyaev, Dmitry; Brewington, Howard; Malanushenko, Elena; Malanushenko, Viktor; Oravetz, Daniel; Pan, Kaike; Snedden, Stephanie [Apache Point Observatory, P.O. Box 59, Sunspot, NM 88349-0059 (United States); Ge, Jian [Department of Astronomy, University of Florida, Gainesville, FL 32611 (United States); Muna, Demitri [Center for Cosmology and Particle Physics, New York University, New York, NY 10003 (United States); Paris, Isabelle; Petitjean, Patrick, E-mail: skv4@pitt.edu [UPMC-CNRS, UMR7095, Institut d' Astrophysique de Paris, F-75014 Paris (France); and others

    2013-05-01

    We measure the two-point cross-correlation function of C IV absorber systems and quasars, using spectroscopic data from the Sloan Digital Sky Survey III Baryon Oscillation Spectroscopic Survey (BOSS; Data Release 9). The 19,701 quasars and 6149 C IV ''moderate'' absorbers, 0.28 A < rest-frame equivalent width (EW) < 5 A, in our study cover a redshift range of 2.1 < z < 2.5 over 3300 deg{sup 2} and represent a factor of two increase in sample size over previous investigations. We find a correlation scale length and slope of the redshift-space cross-correlation function of s{sub 0} = 8.46 {+-} 1.24 Mpc, {gamma} = 1.68 {+-} 0.19, in the redshift-space range 10 < s < 100 Mpc. We find a projected cross-correlation function of C IV absorption systems and quasars of r{sub 0} = 7.76 {+-} 2.80 Mpc, {gamma} = 1.74 {+-} 0.21. We measure the combined quasar and C IV bias to be b{sub QSO} b{sub C{sub IV}} = 8.81 {+-} 2.28. Using an estimate of b{sub QSO} from the quasar auto-correlation function we find b{sub CIV} = 2.38 {+-} 0.62. This b{sub CIV} implies that EW > 0.28 A C IV absorbers at z {approx} 2.3 are typically found in dark matter halos that have masses {>=}10{sup 11.3}-10{sup 13.4} M{sub Sun} at that redshift. The complete BOSS sample will triple the number of both quasars and absorption systems and increase the power of this cross-correlation measurement by a factor of two.

  18. Informationskompetenz und Information Literacy

    OpenAIRE

    Ingold, Marianne

    2012-01-01

    Informationskompetenz ist heute als Begriff , Konzept und praktisches Tätigkeitsfeld von Bibliotheken weltweit etabliert. Entstehung, Verbreitung und Entwicklung von „Informationskompetenz“ im deutschsprachigen Raum stehen in engem Zusammenhang mit dem in den USA und international seit den 1980er Jahren diskutierten und praktisch umgesetzten Konzept der „Information Literacy“. Auch wenn die beiden Begriffe in der Regel gleichbedeutend verwendet werden, zeigt ein Vergleich der vorwiegend aus e...

  19. The removal of toxic metals from liquid effluents by ion exchange resins. Part IV: Chromium(III)/H+ /Lewatit SP112

    International Nuclear Information System (INIS)

    Alguacil, F.J.

    2017-01-01

    This investigation presented results on the removal of chromium(III), from aqueous solution in the 0-5 pH range, using Lewatit SP112 cationic exchange resin. Several aspects affecting the ion exchange process were evaluated, including: the influence of the stirring speed, temperature, pH of the solution, resin dosage and aqueous ionic strength. The selectivity of the system was tested against the presence of other metals in the aqueous solution, whereas the removal of chromium(III) from solutions was compared with results obtained using multiwalled carbon nanotubes as adsorbents. From the batch experimental data, best fit of the results is obtained with the Langmuir model, whereas the ion exchange process is best explained by the pseudo-second order model, moreover, experimental data responded well to the film-diffusion controlled model. Elution of the chromium(III) loaded into the resin is well accomplished by the use of sodium hydroxide solutions. [es

  20. Analysis of benchmark experiments for testing the IKE multigroup cross-section libraries based on ENDF/B-III and IV

    International Nuclear Information System (INIS)

    Keinert, J.; Mattes, M.

    1975-01-01

    Benchmark experiments offer the most direct method for validation of nuclear cross-section sets and calculational methods. For 16 fast and thermal critical assemblies containing uranium and/or plutonium of different compositions we compared our calculational results with measured integral quantities, such as ksub(eff), central reaction rate ratios or fast and thermal activation (dis)advantage factors. Cause of the simple calculational modelling of these assemblies the calculations proved as a good test for the IKE multigroup cross-section libraries essentially based on ENDF/B-IV. In general, our calculational results are in excellent agreement with the measured values. Only with some critical systems the basic ENDF/B-IV data proved to be insufficient in calculating ksub(eff), probably due to Pu neutron data and U 238 fast capture cross-sections. (orig.) [de

  1. Lehre am Puls der Zeit - Global Health in der Medizinischen Ausbildung: Positionen, Lernziele und methodische Empfehlungen [Cutting-Edge Education - Global Health in Medical Training: Prosposals, Educational Objectives and Methodological Recommendations

    Directory of Open Access Journals (Sweden)

    Bozorgmehr, Kayvan

    2009-05-01

    Full Text Available [english] Aim: To formulate a guideline on educational objectives and methodology for the implementation of the cross-disciplinary subject “Global Health” in German medical education, on the initiative of the German Medical Students’ Association (bvmd Germany. Methods: For this purpose, the Globalisation and Health Initiative (GandHI of bvmd Germany established the “Global Health Curriculum” working group in May 2008. Review and assessment of available international literature regarding Global Health in medical education. Multilevel consensus development process from May 2008 to January 2009 by means of workshops, group discussions, teleconferences, and e-mail. Results: The bvmd Germany calls for The formulation of 15 general educational objectives based on proposals (ii and (iii. Three clusters shall formulate specific objectives: Regarding form, duration, and implementation of courses. [german] Zielsetzung: Formulierung einer Leitlinie zu Lernzielen und der praktischen Umsetzung eines disziplinübergreifenden Fachgebiets „Global Health“ für die medizinische Ausbildung in Deutschland aus Sicht der Bundesvertretung der Medizinstudierenden (bvmd. Methodik: Initiierung des Arbeitskreises „Global Health Curriculum“ innerhalb der Globalisation and Health Initiative (GandHI der bvmd im Mai 2008. Nicht-systematische Recherche und Bewertung nationaler und internationaler Literatur zu Global Health in der medizinischen Ausbildung. Mehrstufiger Konsensbildungsprozess von Mai 2008 bis Januar 2009 durch Workshops, Arbeitstreffen, Gruppendiskussionen, Telefonkonferenzen und Email-Kommunikation, initiert und koordiniert durch den Arbeitskreis „Global Health Curriculum“ der GandHI. Ergebnisse: : Die bvmd plädiert für Formulierung von 15 allgemeinen Lernzielen, aufbauend auf den Positionen (ii und (iii. Bestehend aus Aufbauend auf Position (iv wird nahe gelegt, entsprechende Kurse als Tagesveranstaltung in Seminarform mit einer Dauer

  2. Inverse break-through investigation on uranium isotope separation in the system Fe(III) water-glycerine solution-U(IV) cathionic resin

    International Nuclear Information System (INIS)

    Murgulescu, Sanda; Calusaru, A.

    1977-01-01

    When a solution containing ferric ions passes on cationic resin in U(IV) form, the substitution of uranium by iron is preceded by oxydation of U(IV) to U(VI). During the contact of U(VI) in solution with U(IV) in resin, an exchange reaction occurs, in which 235 U is slightly concentrated in solution and 238 U in resin phase. Since increase of temperature accelerates the exchange reaction, the apparent thermodynamic values of the exchange reaction were calculated, by taking into account the variation of the apparent equilibrium constant as a function of the reciprocal value of the temperature. The corresponding thermodynamic values in both pure aqueous and water-glycerine solution are: ΔH 0 =6.45 cal.mol -1 and ΔS 0 =21.6x10 -3 cal. 0 K -1 . The use of glycerine containing solutions offers the important advantage to increase the stability versus hydrolysis of the ferric ions even at higher temperature

  3. Daily concurrent chemoradiotherapy with docetaxel (DOC) and cisplatin (CDDP) using superselective intra-arterial infusion via the superficial temporal artery for stage III and IV oral cancer. Possibility of organ preservation in advanced oral cancer

    International Nuclear Information System (INIS)

    Mitsudo, Kenji; Tohnai, Iwai; Fuwa, Nobukazu

    2006-01-01

    Superselective intra-arterial chemotherapy via the superficial temporal artery has become feasible for daily concurrent radiotherapy and chemotherapy for head and neck cancer. This novel method was used for oral cancer, and its efficacy was evaluated. Treatment consisted of superselective intra-arterial infusions (Docetaxel (DOC) total 60 mg/m 2 , Cisplatin (CDDP) total 100 mg/m 2 ) and concurrent radiotherapy (total 40 Gy) for four weeks as preoperative therapy. Thirty-four patients with stage III and IV oral cancer received surgery after this treatment, and pathological CR was obtained in 31 patients (91%). The possibility of organ preservation for advanced oral cancer was evaluated from this result. Patients with oral cancer stage III and IV were treated for four-week daily concurrent chemoradiotherapy, and the clinical response was evaluated after treatment. Clinical CR of primary sites was obtained in 15 patients, and the same treatment was continued one or two weeks. Thirteen patients (80%) were disease-free in the primary sites, and two (20%) relapsed. Two patients died of distant metastasis, and one died of local recurrence. This method can preserve organs and minimize functional disturbance, thus contributing to patient QOL. (author)

  4. Intra-articular Hyaluronic Acid (HA) and Platelet Rich Plasma (PRP) injection versus Hyaluronic acid (HA) injection alone in Patients with Grade III and IV Knee Osteoarthritis (OA): A Retrospective Study on Functional Outcome.

    Science.gov (United States)

    Saturveithan, C; Premganesh, G; Fakhrizzaki, S; Mahathir, M; Karuna, K; Rauf, K; William, H; Akmal, H; Sivapathasundaram, N; Jaspreet, K

    2016-07-01

    Introduction: Intra-articular hyaluronic acid (HA) is widely utilized in the treatment of knee osteoarthritis whereas platelet rich plasma (PRP) enhances the regeneration of articular cartilage. This study analyses the efficacy of HA and PRP in grade III and IV knee osteoarthritis. Methodology: This is a cross sectional study with retrospective review of 64 patients (101 knees) which includes 56 knees injected with HA+ PRP, and 45 knees with HA only. Results: During the post six months International Knee Documentation Committee (IKDC) evaluation, HA+PRP group showed marked improvement of 24.33 compared to 12.15 in HA group. Decrement in visual analogue score (VAS) in HA+PRP was 1.9 compared to 0.8 in HA group. Conclusion: We propose intra-articular HA and PRP injections as an optional treatment modality in Grade III and IV knee osteoarthritis in terms of functional outcome and pain control for up to six months when arthroplasty is not an option.

  5. Intra-articular Hyaluronic Acid (HA and Platelet Rich Plasma (PRP injection versus Hyaluronic acid (HA injection alone in Patients with Grade III and IV Knee Osteoarthritis (OA: A Retrospective Study on Functional Outcome

    Directory of Open Access Journals (Sweden)

    Saturveithan C

    2016-07-01

    Full Text Available Introduction: Intra-articular hyaluronic acid (HA is widely utilized in the treatment of knee osteoarthritis whereas platelet rich plasma (PRP enhances the regeneration of articular cartilage. This study analyses the efficacy of HA and PRP in grade III and IV knee osteoarthritis. Methodology: This is a cross sectional study with retrospective review of 64 patients (101 knees which includes 56 knees injected with HA+ PRP, and 45 knees with HA only. Results: During the post six months International Knee Documentation Committee (IKDC evaluation, HA+PRP group showed marked improvement of 24.33 compared to 12.15 in HA group. Decrement in visual analogue score (VAS in HA+PRP was 1.9 compared to 0.8 in HA group. Conclusion: We propose intra-articular HA and PRP injections as an optional treatment modality in Grade III and IV knee osteoarthritis in terms of functional outcome and pain control for up to six months when arthroplasty is not an option.

  6. Aerial radiometric and magnetic survey; Brushy Basin detail survey: Price/Salina national topographic map sheets, Utah. Volume IV. Area III: graphic data. Final report

    International Nuclear Information System (INIS)

    1981-01-01

    This volume contains all the graphic data for Area III, which includes lines 3420 to 5320 and tie lines 6080, 6100, and 6140. Due to the large map scale of the data presented (1:62,500), this area was further subdivided into eleven 7-1/2 min quadrant sheets

  7. Aufbau des humanoiden Roboters BART III

    Science.gov (United States)

    Resetov, Dimitri; Pietsch, Björn; Gerth, Wilfried

    Der vorliegende Beitrag präsentiert den humanoiden Roboter BART III, der am Institut für Regelungstechnik als eine robuste und erweiterbare Plattform für weiterführende Grundlagenforschung zur zweibeinigen Fortbewegung entwickelt wurde. Im Gegensatz zu den bisher am IRT genutzten Robotern BARt-UH und LISA besitzt der neue Roboter einen beweglichen Oberkörper mit einem Bauchgelenk und Armen. BART III besitzt insgesamt 19 aktive Freiheitsgrade, 12 davon im Unterkörper. Ein weiteres Merkmal des Roboters ist die im gesamten Körper verteilte Ansteuerelektronik, die neben der lokalen Motorregelung diverse sicherheitsrelevante Funktionen übernimmt.

  8. ENETRAP III WP7. European guidance on the implementation of the requirements of the EURATOM BSS; ENETRAP III WP7. Europaeische Leitlinien zur Umsetzung der Aus- und Weiterbildungs-Anforderungen der EURATOM-Grundnormen im Strahlenschutz

    Energy Technology Data Exchange (ETDEWEB)

    Paynter, R. [EUTERP (Netherlands); Stewart, J. [PHE (United Kingdom); Schmitt-Hannig, A. [BfS (Germany); Coeck, M. [SCK-CEN (Belgium); Falcao, A. [IST (Portugal)

    2016-07-01

    The Euratom BSS lays down specific requirements for the Radiation Protection Expert (RPE) and for the Radiation Protection Officer (RPO) and education and training requirements associated with these roles. A guidance document has been developed within the framework of ENETRAP III WP7 ''Guidance to support the implementation of E and T requirements for RPE and RPO as defined in the Euratom BSS''. The objective of WP7 activities is to facilitate the implementation of the new requirements for RPE and RPO in Member States and to help ensuring a consistent approach throughout the European Union.

  9. Dynamically formed hydrous zirconium (IV) oxide-polyelectrolyte membranes. III: Poly(acrylic acid) and substituted poly(acrylic acid) homo, co and terpolymer membranes

    International Nuclear Information System (INIS)

    Van Reenen, A.J.; Sanderson, R.D.

    1989-01-01

    A series of acrylic acid and substituted acrylic acid homo, co and terpolymers was synthesised. These polymers were used as polyelectrolytes in dynamically formed hydrous zirconium (iv) oxide-polyelectrolyte membranes. Substitution of the acrylic acid α-hydrogen was done to increase the number of carboxylic acid groups per monomer unit and to change the acid strength of acrylic acid carboxylic acid group. None of these changes improved the salt rejection of these membranes over that of commercially used poly(acrylic acid). Improvement in rejection was found when a hydrophobic comonomer, vinyl acetate, was used in conjunction with acrylic acid in a copolymer dynamic membrane. 16 refs., 6 figs., 1 tab

  10. Romanistik und gender studies

    Directory of Open Access Journals (Sweden)

    Susanne Schlünder

    2000-11-01

    Full Text Available Die beiden Bände bieten ein breites Spektrum von Beiträgen zur französischen, italienischen und spanischen Literaturwissenschaft. Gedankliche Grundlage der im einzelnen unterschiedlichen Ansätze und Zielsetzungen ist ein im Anschluß an Judith Butler gender-reflektierendes, diskursives Konzept von Geschlecht, dessen wissenschaftsgeschichtliche Herleitung und Perspektiven Renate Kroll einleitend darlegt. Die einzelnen Artikel beschäftigen sich zum einen mit literarischen Strategien, die Schriftstellerinnen vom Mittelalter bis zur Gegenwart erprobt haben, und hinterfragen dabei die Rolle weiblicher Autoren in Literaturgeschichte und Literaturgeschichtsschreibung. Zum anderen widmen sie sich den literarischen Inszenierungs- und Repräsentationsformen von Weiblichkeit und stellen darüber einen Bezug zur Lebenswelt der behandelten Autorinnen her.

  11. "Fair Valueu" und die Korperschaftsteuer aus spanischer Sicht - Anmerkungen zur steuerlichen Geeignetheit der IFRS'

    OpenAIRE

    Báez Moreno, Andrés; Kaiser, Thomas

    2007-01-01

    1. Problemaufriss; M6glichkeiten der Einbeziehung der IASIIFRS in die Einzelabschlüsse und steuerliche Auswirkungen TI. Vom .Fair Value" betroffene Aktiva und Auswirkung auf das Jahresergebnis 1. Erfolgswirksame Neubewertungen 2. Erfolgsneutrale Neubewertungen III. Die Neubewertung mit dem .Fair Value" und das Problem der Besteuerung nicht realisierter Gewinne1. Das Argument der fehlenden Liquiditiit 2. Das Argument der Bewertungsschwierigkeiten 3. Das Argument der ...

  12. cis-Tetrachlorido-bis(indazole)osmium(iv) and its osmium(iii) analogues: paving the way towards the cis-isomer of the ruthenium anticancer drugs KP1019 and/or NKP1339

    KAUST Repository

    Büchel, Gabriel E.

    2017-08-15

    The relationship between cis-trans isomerism and anticancer activity has been mainly addressed for square-planar metal complexes, in particular, for platinum(II), e.g., cis- and trans-[PtCl2(NH3)(2)], and a number of related compounds, of which, however, only cis-counterparts are in clinical use today. For octahedral metal complexes, this effect of geometrical isomerism on anticancer activity has not been investigated systematically, mainly because the relevant isomers are still unavailable. An example of such an octahedral complex is trans-[RuCl4(Hind)(2)](-), which is in clinical trials now as its indazolium (KP1019) or sodium salt (NKP1339), but the corresponding cis-isomers remain inaccessible. We report the synthesis of Na[cis-(OsCl4)-Cl-III(kappa N2-1H-ind)(2)] . (Na[1]) suggesting a route to the cis-isomer of NKP1339. The procedure involves heating (H(2)ind)[(OsCl5)-Cl-IV(kappa N1-2H-ind)] in a high boiling point organic solvent resulting in an Anderson rearrangement with the formation of cis-[(OsCl4)-Cl-IV(kappa N2-1H-ind)(2)] ([1]) in high yield. The transformation is accompanied by an indazole coordination mode switch from kappa N1 to kappa N2 and stabilization of the 1H-indazole tautomer. Fully reversible spectroelectrochemical reduction of [1] in acetonitrile at 0.46 V vs. NHE is accompanied by a change in electronic absorption bands indicating the formation of cis-[(OsCl4)-Cl-III(kappa N2-1H-ind)(2)](-) ([1](-)). Chemical reduction of [1] in methanol with NaBH4 followed by addition of nBu(4)NCl afforded the osmium(III) complex nBu(4)N[cis-(OsCl4)-Cl-III(kappa N2-1H-ind)(2)] (nBu(4)N [1]). A metathesis reaction of nBu(4)N[1] with an ion exchange resin led to the isolation of the water-soluble salt Na[1]. The X-ray diffraction crystal structure of [1] . Me2CO was determined and compared with that of trans-[(OsCl4)-Cl-IV(kappa N2-1H-ind)(2)] . 2Me(2)SO (2 . 2Me(2)SO), also prepared in this work. EPR spectroscopy was performed on the Os-III complexes and

  13. cis-Tetrachlorido-bis(indazole)osmium(iv) and its osmium(iii) analogues: paving the way towards the cis-isomer of the ruthenium anticancer drugs KP1019 and/or NKP1339

    KAUST Repository

    Bü chel, Gabriel E.; Kossatz, Susanne; Sadique, Ahmad; Rapta, Peter; Zalibera, Michal; Bucinsky, Lukas; Komorovsky, Stanislav; Telser, Joshua; Eppinger, Jö rg; Reiner, Thomas; Arion, Vladimir B.

    2017-01-01

    The relationship between cis-trans isomerism and anticancer activity has been mainly addressed for square-planar metal complexes, in particular, for platinum(II), e.g., cis- and trans-[PtCl2(NH3)(2)], and a number of related compounds, of which, however, only cis-counterparts are in clinical use today. For octahedral metal complexes, this effect of geometrical isomerism on anticancer activity has not been investigated systematically, mainly because the relevant isomers are still unavailable. An example of such an octahedral complex is trans-[RuCl4(Hind)(2)](-), which is in clinical trials now as its indazolium (KP1019) or sodium salt (NKP1339), but the corresponding cis-isomers remain inaccessible. We report the synthesis of Na[cis-(OsCl4)-Cl-III(kappa N2-1H-ind)(2)] . (Na[1]) suggesting a route to the cis-isomer of NKP1339. The procedure involves heating (H(2)ind)[(OsCl5)-Cl-IV(kappa N1-2H-ind)] in a high boiling point organic solvent resulting in an Anderson rearrangement with the formation of cis-[(OsCl4)-Cl-IV(kappa N2-1H-ind)(2)] ([1]) in high yield. The transformation is accompanied by an indazole coordination mode switch from kappa N1 to kappa N2 and stabilization of the 1H-indazole tautomer. Fully reversible spectroelectrochemical reduction of [1] in acetonitrile at 0.46 V vs. NHE is accompanied by a change in electronic absorption bands indicating the formation of cis-[(OsCl4)-Cl-III(kappa N2-1H-ind)(2)](-) ([1](-)). Chemical reduction of [1] in methanol with NaBH4 followed by addition of nBu(4)NCl afforded the osmium(III) complex nBu(4)N[cis-(OsCl4)-Cl-III(kappa N2-1H-ind)(2)] (nBu(4)N [1]). A metathesis reaction of nBu(4)N[1] with an ion exchange resin led to the isolation of the water-soluble salt Na[1]. The X-ray diffraction crystal structure of [1] . Me2CO was determined and compared with that of trans-[(OsCl4)-Cl-IV(kappa N2-1H-ind)(2)] . 2Me(2)SO (2 . 2Me(2)SO), also prepared in this work. EPR spectroscopy was performed on the Os-III complexes and

  14. Results of paclitaxel (day 1 and 8 and carboplatin given on every three weeks in advanced (stage III-IV non-small cell lung cancer

    Directory of Open Access Journals (Sweden)

    Salepci Taflan

    2005-01-01

    Full Text Available Abstract Background Both paclitaxel (P and carboplatin (C have significant activity in non-small cell lung cancer (NSCLC. The weekly administration of P is active, dose intense, and has a favorable toxicity profile. We retrospectively reviewed the data of 51 consecutive patients receiving C and day 1 and 8 P chemotherapy (CT regimen in advanced stage NSCLC to evaluate the efficacy and toxicity. Methods Patients treated in our institutions having pathologically proven NSCLC, no CNS metastases, adequate organ function and performance status (PS ECOG 0–2 were given P 112.5 mg/m2 intravenously (IV over 1 hour on day 1 and 8, followed by C AUC 5 IV over 1 hour, repeated in every three weeks. PC was given for maximum of 6 cycles. Results Median age was 58 (age range 39–77 and 41 patients (80% were male. PS was 0/1/2 in 29/17/5 patients and stage was IIIA/IIIB/IV in 3/14/34 patients respectively. The median number of cycles administered was 3 (1–6. Seven patients (14% did not complete the first 3 cycles either due to death, progression, grade 3 hypersensitivity reactions to P or lost to follow up. Best evaluable response was partial response (PR in 45% and stable disease (SD in 18%. Twelve patients (24% received local RT. Thirteen patients (25% received 2nd line CT at progression. At a median follow-up of 7 months (range, 1–20, 25 (49% patients died and 35 patients (69% progressed. Median overall survival (OS was 11 ± 2 months (95% CI; 6 to 16, 1-year OS ratio was 44%. Median time to progression (TTP was 6 ± 1 months (95% CI; 4 to 8, 1-year progression free survival (PFS ratio was 20%. We observed following grade 3 toxicities: asthenia (10%, neuropathy (4%, anorexia (4%, anemia (4%, hypersensitivity to P (2%, nausea/vomiting (2%, diarrhea (2% and neutropenia (2%. Two patients (4% died of febrile neutropenia. Doses of CT were reduced or delayed in 12 patients (24%. Conclusions P on day 1 and 8 and C every three weeks is practical and fairly

  15. Reactions of uranium (III) and (IV) compounds with ketones, nitriles and acid chlorides. Towards a use of uranium complexes in organic synthesis

    International Nuclear Information System (INIS)

    Adam, Raymond

    1993-01-01

    In this research thesis, the author shows that various organic molecules can be interestingly transformed into uranium complexes with degrees of oxidation of +3 or +4. In a first part, the author describes reactions of carbonyl compounds with the UCl 4 -Na(Hg) reducing system. Then, he addresses reductions of ketones, nitriles and acid chlorides by a uranium (III) complex: Cp 3 U(THF). The third part reports a detailed study of the reduction of ketones by U(BH 4 ) 4 [fr

  16. Microbial Mn(IV) and Fe(III) reduction in northern Barents Sea sediments under different conditions of ice cover and organic carbon deposition

    DEFF Research Database (Denmark)

    Nickel, Maren; Vandieken, Verona; Brüchert, Volker

    2008-01-01

    station, with seasonally extended ice cover, low organic carbon content and sedimentation rate combined with relatively high concentrations of Mn and Fe(III) oxides favored dissimilatory Fe and Mn reduction (98% of anaerobic carbon oxidation) over sulfate reduction in the top 12 cm of the sediment....... In contrast, in a sediment that had not been ice covered for at least 12 months and with more organic carbon and a higher sedimentation rate, sulfate reduction was the most important anaerobic electron-accepting process (>80% of anaerobic carbon oxidation). In the upper 3 cm, microbial Fe and sulfate...

  17. Hope for progress after 40 years of futility? Novel approaches in the treatment of advanced stage III and IV non-small-cell-lung cancer: Stereotactic body radiation therapy, mediastinal lymphadenectomy, and novel systemic therapy

    Directory of Open Access Journals (Sweden)

    Simon Fung Kee Fung

    2012-01-01

    Full Text Available Non-small-cell lung cancer (NSCLC remains a leading cause of cancer mortality. The majority of patients present with advanced (stage III-IV disease. Such patients are treated with a variety of therapies including surgery, radiation, and chemotherapy. Despite decades of work, however, overall survival in this group has been resistant to any substantial improvement. This review briefly details the evolution to the current standard of care for advanced NSCLC, advances in systemic therapy, and novel techniques (stereotactic body radiation therapy [SBRT], and transcervical extended mediastinal lymphadenectomy [TEMLA] or video-assisted mediastinal lymphadenectomy [VAMLA] that have been used in localized NSCLC. The utility of these techniques in advanced stage therapy and potential methods of combining these novel techniques with systemic therapy to improve survival are discussed.

  18. Separation of cerium from other lanthanides by leaching with nitric acid rare earth(III) hydroxide-cerium(IV) oxide mixtures

    International Nuclear Information System (INIS)

    Mioduski, T.; Dong Anh Hao; Hoang Hong Luan

    1989-01-01

    The objective of the present work is a method for separating Ce from other Ln in the raw natural mixtures of rare earth hydroxides obtained from Vietnamese and Mongolian fluorocarbonate ores. The method, a simple acid digestion, should combine a maximum Ln(III) concentration of the effluent solution with a nitrate counter-ion environment and high selectivity vs. leaching yield parameters. Under optimum conditions Ce (and Th, if present) virtually does not pass into solution while the yield of leaching and the sum of REE oxides concentration in the after-leach solution reach the maximum values of 97% (mass) and 0.18 kg x dm -3 , respectively. (author) 9 refs.; 8 tabs

  19. Relationship between time to clinical response and outcomes among Pneumonia Outcomes Research Team (PORT) risk class III and IV hospitalized patients with community-acquired pneumonia who received ceftriaxone and azithromycin.

    Science.gov (United States)

    Zasowski, Evan; Butterfield, Jill M; McNutt, Louise-Ann; Cohen, Jason; Cosler, Leon; Pai, Manjunath P; Gottwald, Joseph; Chen, Wen Zhen; Lodise, Thomas P

    2014-07-01

    Recent Food and Drug Administration (FDA) guidance endorses the use of an early clinical response endpoint as the primary outcome for community-acquired bacterial pneumonia (CABP) trials. While antibiotics will now be approved for CABP, in practice they will primarily be used to treat patients with community-acquired pneumonia (CAP). More importantly, it is unclear how achievement of the new FDA CABP early response endpoint translates into clinically applicable real-world outcomes for patients with CAP. To address this, a retrospective cohort study was conducted among adult patients who received ceftriaxone and azithromycin for CAP of Pneumonia Outcomes Research Team (PORT) risk class III and IV at an academic medical center. The clinical response was defined as clinical stability for 24 h with improvement in at least one pneumonia symptom and with no symptom worsening. A classification and regression tree (CART) was used to determine the delay in response time, measured in days, associated with the greatest risk of a prolonged hospital length of stay (LOS) and adverse outcomes (in-hospital mortality or 30-day CAP-related readmission). A total of 250 patients were included. On average, patients were discharged 2 days following the achievement of a clinical response. In the CART analysis, adverse clinical outcomes were higher among day 5 nonresponders than those who responded by day 5 (22.4% versus 6.9%, P = 0.001). The findings from this study indicate that time to clinical response, as defined by the recent FDA guidance, is a reasonable prognostic indicator of real-world effectiveness outcomes among hospitalized PORT risk class III and IV patients with CAP who received ceftriaxone and azithromycin. Copyright © 2014, American Society for Microbiology. All Rights Reserved.

  20. Asteroids IV

    Science.gov (United States)

    Michel, Patrick; DeMeo, Francesca E.; Bottke, William F.

    . Asteroids, like planets, are driven by a great variety of both dynamical and physical mechanisms. In fact, images sent back by space missions show a collection of small worlds whose characteristics seem designed to overthrow our preconceived notions. Given their wide range of sizes and surface compositions, it is clear that many formed in very different places and at different times within the solar nebula. These characteristics make them an exciting challenge for researchers who crave complex problems. The return of samples from these bodies may ultimately be needed to provide us with solutions. In the book Asteroids IV, the editors and authors have taken major strides in the long journey toward a much deeper understanding of our fascinating planetary ancestors. This book reviews major advances in 43 chapters that have been written and reviewed by a team of more than 200 international authorities in asteroids. It is aimed to be as comprehensive as possible while also remaining accessible to students and researchers who are interested in learning about these small but nonetheless important worlds. We hope this volume will serve as a leading reference on the topic of asteroids for the decade to come. We are deeply indebted to the many authors and referees for their tremendous efforts in helping us create Asteroids IV. We also thank the members of the Asteroids IV scientific organizing committee for helping us shape the structure and content of the book. The conference associated with the book, "Asteroids Comets Meteors 2014" held June 30-July 4, 2014, in Helsinki, Finland, did an outstanding job of demonstrating how much progress we have made in the field over the last decade. We are extremely grateful to our host Karri Muinonnen and his team. The editors are also grateful to the Asteroids IV production staff, namely Renée Dotson and her colleagues at the Lunar and Planetary Institute, for their efforts, their invaluable assistance, and their enthusiasm; they made life as

  1. Electrochemical properties of the hexacyanoferrate(II)–ruthenium(III) complex immobilized on silica gel surface chemically modified with zirconium(IV) oxide

    International Nuclear Information System (INIS)

    Panice, Lucimara B.; Oliveira, Elisangela A. de; Filho, Ricardo A.D. Molin; Oliveira, Daniela P. de; Lazarin, Angélica M.; Andreotti, Elza I.S.; Sernaglia, Rosana L.; Gushikem, Yoshitaka

    2014-01-01

    Highlights: • The cyano-bridged mixed valence ruthenium composite material was synthesized. • This newly synthesized compound was incorporated into a carbon paste electrode. • The electrode did not show significant changes in response after six months of use. • The modified electrode is very stable and reproducible. • The electrode sensor was successfully applied for ascorbic acid determination. - Abstract: The chemically modified silica gel with zirconium(IV) oxide was used to immobilize the [Fe(CN) 6 ] 4− complex ion initially. The reaction of this material with [Ru(edta)H 2 O] − complex ion formed the immobilized cyano-bridged mixed valence ruthenium complex, (≡Zr) 5 [(edta)RuNCFe(CN) 5 ]. This material was incorporated into a carbon paste electrode and, its electrochemical properties were investigated. However, for an ascorbic acid solution, an enhancement of the anodic peak current was detected due to electrocatalytic oxidation. The electrode presented the same response for at least 150 successive measurements, with a good repeatability. The modified electrode is very stable and reproducible. The sensor was applied for ascorbic acid determination in pharmaceutical preparation with success

  2. Study of the oxidation-reduction kinetics involved in the Np(V) + Fe(II) in equilibrium Np(IV) + Fe(III) system in nitric acid solutions

    International Nuclear Information System (INIS)

    Jao, Y.

    1975-08-01

    Ferrous nitrate-hydrazine is one of the more attractive alternate reactants to the currently used reagent, ferrous sulfamate, for partitioning plutonium from neptunium and uranium. An understanding of the kinetics of the reduction of Np(VI) to Np(IV) by ferrous nitrate-hydrazine is needed before a satisfactory evaluation of the feasibility of this reductant in actinide element separations can be made. The purpose of this work was to study the kinetics and mechanisms of the reduction of Np(V) by Fe(II) and the oxidation of Np(IV) by Fe(III) in 1-2 M nitric acid solutions. The acid concentration range was chosen to include that typically used in the separation of plutonium from neptunium and uranium by solvent extraction with tributylphosphate. The forward and reverse rate constants, hydrogen ion dependence, temperature dependence, ionic strength effects and nitrate ion influence were determined. The proposed reaction mechanisms involve protonation of the NpO 2 + ions and hydroxyoxygenation of Np 4 + ions. (LK)

  3. Fotografie und atomare Katastrophe

    OpenAIRE

    Bürkner, Daniel

    2015-01-01

    Die Dissertation setzt sich mit den fotografischen Repräsentationen der Atombombenabwürfe auf Hiroshima und Nagasaki sowie der Havarie des Kernkraftwerks Tschernobyl auseinander. Dabei werden künstlerische, dokumentarische und touristische Bilder analysiert, die sich der jeweiligen Strahlenkatastrophe oftmals erst Jahre nach dem Ereignis annehmen und ikonografische oder medial-materielle Bezüge zu ihr aufweisen. Es zeigen sich zentrale Strategien, atomare Katastrophen, seien sie militäri...

  4. Synthesis and characterization of technetium(III) complexes with nitrogen heterocycles by O atom transfer from oxotechnetium(V) cores. Crystal structures of mer-[Cl3(pic)3Tc] and mer-[Cl3(pic)(PMe2Ph)2Tc] (pic = 4-picoline). Electrochemical parameters fore the reduction of TcII, TcIII, and TcIV

    International Nuclear Information System (INIS)

    Lu, Jun; Yamano, Akahito; Clarke, M.J.

    1990-01-01

    The combination of pyridine ligands, (OCl 4 Tc) - , and O atom acceptors of different cone angles, such as PMe 2 Ph or PPh 3 , results in Tc III complexes that vary in the coordination of the phosphine ligand. The compounds mer[Cl 3 (4-picoline) 3 Tc] and mer-(Cl 3 (4-picoline)(PMe 2 Ph) 2 Tc) have been obtained in good yield and have been characterized spectroscopically and by single-crystal x-ray diffraction. The crystal structure data are reported. Linear correlations of technetium reduction potentials in DMF with electrochemical ligand additivity parameters (E L 's) have been obtained for the Tc II,I , Tc III,II , and Tc IV,III couples. The slope and intercept (S M , I M ) pairs for each technetium oxidation-reduction couple, respectively, are (1.39, -2.07), (1.29, -0.91), and (1.00, 0.65). 32 refs., 3 figs., 6 tabs

  5. Biometrische Untersuchungen des Stylopodiums, Zygopodiums und Metapodiums pleistozäner Ursiden im Hinblick auf die Evolution des Höhlenbären und die Klassifizierung des Fundmaterials Einhornhöhle / Harz

    OpenAIRE

    Athen, Kerstin Anja

    2007-01-01

    In der vorliegenden Dissertation "Biometrische Untersuchungen des Stylopodiums, Zygopodiums und Metapodiums pleistozäner Ursiden im Hinblick auf die Evolution des Höhlenbären und die Klassifizierung des Fundmaterials Einhornhöhle / Harz" wurden Daten des oberpliozänen Ursus etruscus, des pleistozänen Ursus deningeri sowie des Ursus spelaeus ausgewertet. Zur Datenerhebung wurden 249 Messgrößen an den Skelettelementen Humerus, Ulna, Radius, Metacarpalia I-V, Femur, Tibia, Fibula und Metatarsali...

  6. Versicherung und volkswirtschaftlicher Kreislauf

    OpenAIRE

    Lampert, Heinz

    1982-01-01

    Versicherung und volkswirtschaftlicher Kreislauf : zur Behandlung d. Privatversicherung in d. volkswirtschaftl. Gesamtrechnung. - In: Zeitschrift für die gesamte Versicherungswissenschaft. 71. 1982. S. 189-210

  7. Practical routes to (SiH₃)₃P: applications in group IV semiconductor activation and in group III-V molecular synthesis.

    Science.gov (United States)

    Tice, Jesse B; Chizmeshya, A V G; Tolle, J; D' Costa, V R; Menendez, J; Kouvetakis, J

    2010-05-21

    The (SiH₃)₃P hydride is introduced as a practical source for n-doping of group IV semiconductors and as a highly-reactive delivery agent of -(SiH₃)₂P functionalities in exploratory synthesis. In contrast to earlier methods, the compound is produced here in high purity quantitative yields via a new single-step method based on reactions of SiH₃Br and (Me₃Sn)₃P, circumventing the need for toxic and unstable starting materials. As an initial demonstration of its utility we synthesized monosubstituted Me₂M-P(SiH₃)₂ (M = Al, Ga, In) derivatives of Me₃M containing the (SiH₃)₂P ligand for the first time, in analogy to the known Me₂M-P(SiMe₃)₂ counterparts. A dimeric structure of Me₂M-P(SiH₃)₂ is proposed on the basis of spectroscopic characterizations and quantum chemical simulations. Next, in the context of materials synthesis, the (SiH₃)₃P compound was used to dope germanium for the first time by building a prototype p(++)Si(100)/i-Ge/n-Ge photodiode structure. The resultant n-type Ge layers contained active carrier concentrations of 3-4 × 10¹⁹ atoms cm⁻³ as determined by spectroscopic ellipsometry and confirmed by SIMS. Strain analysis using high resolution XRD yielded a Si content of 4 × 10²⁰ atoms cm⁻³ in agreement with SIMS and within the range expected for incorporating Si₃P type units into the diamond cubic Ge matrix. Extensive characterizations for structure, morphology and crystallinity indicate that the Si co-dopant plays essentially a passive role and does not compromise the device quality of the host material nor does it fundamentally alter its optical properties.

  8. Risk Factors Associated with Disease Recurrence in Patients with Stage III/IV Squamous Cell Carcinoma of the Oral Cavity Treated with Surgery and Postoperative Radiotherapy.

    Science.gov (United States)

    Noble, Anisha R; Greskovich, John F; Han, Jaehong; Reddy, Chandana A; Nwizu, Tobenna I; Khan, Mumtaz F; Scharpf, Joseph; Adelstein, David J; Burkey, Brian B; Koyfman, Shlomo A

    2016-02-01

    The purpose of the present study was to identify variables associated with high risk of failure in patients with locally advanced squamous cell carcinoma of the oral cavity (SCC-OC). This retrospective study included 191 patients with stage III-IVb SCC-OC treated with post-operative radiotherapy (RT) or chemoradiotherapy (CRT) between 1995 and 2013. Disease-free (DFS) and overall survival (OS) were analyzed; variables associated with inferior DFS were identified. Seventy-five patients (39%) recurred. DFS and five-year OS were 52% and 54%, respectively. Poorly differentiated tumors (p=0.03), recurrent tumors (p=0.02) and high nodal ratio (p=0.02) were associated with an increased risk of recurrence. CRT was associated with improved DFS in patients with positive margins and/or extracapsular extension (p=0.021). Tumors that are recurrent, high grade, or have high nodal ratio are at risk of recurrence. Presence of these disease features should be taken into consideration for better risk stratification. Copyright© 2016 International Institute of Anticancer Research (Dr. John G. Delinassios), All rights reserved.

  9. Concomitant Chemoradiotherapy Using Carboplatin, Tegafur-Uracil and Leucovorin for Stage III and IV Head-and-Neck Cancer: Results of GORTEC Phase II Study

    International Nuclear Information System (INIS)

    Fesneau, Melanie; Pointreau, Yoann; Chapet, Sophie; Martin, Laurent; Pommier, Pascal; Alfonsi, Marc; Laguerre, Brigitte; Feham, Nasreddine; Berger, Christine; Garaud, Pascal; Calais, Gilles

    2010-01-01

    Purpose: Concomitant chemoradiotherapy is the standard treatment of locally advanced, nonresectable, head-and-neck squamous cell carcinoma. However, the optimal chemotherapy regimen is still controversial. The objective of this Phase II study was to evaluate the feasibility and efficacy of a concomitant treatment using tegafur-uracil, leucovorin, carboplatin, and radiotherapy. Methods and Materials: A total of 77 patients with head-and-neck squamous cell carcinoma Stage III and IVA were enrolled between October 2003 and July 2005. Of the 77 patients, 72 were eligible. They were treated with tegafur-uracil (300 mg/m 2 /d) and leucovorin (75 mg/d) from Days 1 to 19 and from Days 29 to 47 and carboplatin (70 mg/m 2 intravenously for 4 consecutive days), in three cycles every 21 days. Conventional radiotherapy was delivered to a total dose of 70 Gy in 35 fractions. Results: With a mean follow-up of 22.8 months, the 3-year locoregional control, overall survival and disease-free survival actuarial rate was 33.1%, 41.9%, and 27.2%, respectively. The compliance of the treatment was correct. The main acute toxicity was mucositis, with 62% Grade 3-4. Three patients (4.2%) died of acute toxicity. The incidence and severity of late toxicity was acceptable, with 32% Grade 3 and no Grade 4 toxicity. Conclusion: The protocol of concomitant chemoradiotherapy using tegafur-uracil, leucovorin, and carboplatin for locally advanced unresectable head-and-neck squamous cell carcinoma is feasible. The compliance was correct. The incidence and severity of the acute and late toxicities were acceptable, but not improved. The efficacy of this regimen seems equivalent to the main protocols of concurrent chemoradiotherapy. It represents a possible alternative for patients without an intravenous catheter.

  10. Regulatory Safety Issues in the Structural Design Criteria of ASME Section III Subsection NH and for Very High Temperatures for VHTR and GEN IV

    International Nuclear Information System (INIS)

    O'Donnell, William J.; Griffin, Donald S.

    2007-01-01

    The objective of this task is to identify issues relevant to ASME Section III, Subsection NH [1], and related Code Cases that must be resolved for licensing purposes for VHTGRs (Very High Temperature Gas Reactor concepts such as those of PBMR, Areva, and GA); and to identify the material models, design criteria, and analysis methods that need to be added to the ASME Code to cover the unresolved safety issues. Subsection NH was originally developed to provide structural design criteria and limits for elevated-temperature design of Liquid Metal Fast Breeder Reactor (LMFBR) systems and some gas-cooled systems. The U.S. Nuclear Regulatory Commission (NRC) and its Advisory Committee for Reactor Safeguards (ACRS) reviewed the design limits and procedures in the process of reviewing the Clinch River Breeder Reactor (CRBR) for a construction permit in the late 1970s and early 1980s, and identified issues that needed resolution. In the years since then, the NRC and various contractors have evaluated the applicability of the ASME Code and Code Cases to high-temperature reactor designs such as the VHTGRs, and identified issues that need to be resolved to provide a regulatory basis for licensing. This Report describes: (1) NRC and ACRS safety concerns raised during the licensing process of CRBR , (2) how some of these issues are addressed by the current Subsection NH of the ASME Code; and (3) the material models, design criteria, and analysis methods that need to be added to the ASME Code and Code Cases to cover unresolved regulatory issues for very high temperature service.

  11. Regulatory Safety Issues in the Structural Design Criteria of ASME Section III Subsection NH and for Very High Temperatures for VHTR & GEN IV

    Energy Technology Data Exchange (ETDEWEB)

    William J. O’Donnell; Donald S. Griffin

    2007-05-07

    The objective of this task is to identify issues relevant to ASME Section III, Subsection NH [1], and related Code Cases that must be resolved for licensing purposes for VHTGRs (Very High Temperature Gas Reactor concepts such as those of PBMR, Areva, and GA); and to identify the material models, design criteria, and analysis methods that need to be added to the ASME Code to cover the unresolved safety issues. Subsection NH was originally developed to provide structural design criteria and limits for elevated-temperature design of Liquid Metal Fast Breeder Reactor (LMFBR) systems and some gas-cooled systems. The U.S. Nuclear Regulatory Commission (NRC) and its Advisory Committee for Reactor Safeguards (ACRS) reviewed the design limits and procedures in the process of reviewing the Clinch River Breeder Reactor (CRBR) for a construction permit in the late 1970s and early 1980s, and identified issues that needed resolution. In the years since then, the NRC and various contractors have evaluated the applicability of the ASME Code and Code Cases to high-temperature reactor designs such as the VHTGRs, and identified issues that need to be resolved to provide a regulatory basis for licensing. This Report describes: (1) NRC and ACRS safety concerns raised during the licensing process of CRBR , (2) how some of these issues are addressed by the current Subsection NH of the ASME Code; and (3) the material models, design criteria, and analysis methods that need to be added to the ASME Code and Code Cases to cover unresolved regulatory issues for very high temperature service.

  12. Milch, Milchprodukte, Analoge und Speiseeis

    Science.gov (United States)

    Coors, Ursula

    Die Produktpalette Milch und Erzeugnisse aus Milch beinhaltet Konsummilch, die aus Milch oder Bestandteilen der Milch hergestellten Milcherzeugnisse wie Sauermilch-, Joghurt-, Kefir-, Buttermilch-, Sahne-, Kondensmilch-, Trockenmilch- und Molkenerzeugnisse, Milchmisch- und Molkenmischprodukte (Produkte mit beigegebenen Lebensmitteln), Milchzucker, Milcheiweißerzeugnisse, Milchfette und Käse.

  13. Übergewicht und Adipositas in Kindheit und Jugend

    OpenAIRE

    Nitzko, Sina

    2010-01-01

    Einführend wird auf wesentliche Entwicklungsaspekte der interessierenden Lebensphasen Kindheit und Jugend eingegangen. Im Anschluss daran werden verschiedene Aspekte von Übergewicht und Adipositas in Kindheit und Jugend thematisiert. Neben der Definition und Diagnostik, wird auf Möglichkeiten der Klassifikation sowie die Epidemiologie eingegangen. Dargestellt werden darüber hinaus körperliche und psychische Folgestörungen, welche mit Adipositas assoziiert sein können. Basierend auf der...

  14. Intensity-modulated whole abdomen irradiation following adjuvant carboplatin/taxane chemotherapy for FIGO stage III ovarian cancer. Four-year outcomes

    Energy Technology Data Exchange (ETDEWEB)

    Rochet, Nathalie; Lindel, Katja; Katayama, Sonja; Schubert, Kai; Herfarth, Klaus; Harms, Wolfgang; Debus, Juergen [Heidelberg Institute of Radiation Oncology (HIRO), Heidelberg (Germany); University of Heidelberg, Department of Radiation Oncology, Heidelberg (Germany); Schneeweiss, Andreas [University of Heidelberg, Nationales Centrum fuer Tumorerkrankungen (NCT), Heidelberg (Germany); Sohn, Christoph [University of Heidelberg, Department of Gynecology, Heidelberg (Germany)

    2015-07-15

    ;'intensity-modulated whole-abdominal irradiation'', IM-WAI) nach adjuvanter Chemotherapie beim Ovarialkarzinom im Stadium FIGO III prospektiv untersucht. Zwischen 2006 und 2009 wurden 16 Patientinnen mit optimal reseziertem Ovarialkarzinom im Stadium FIGO III mittels konsolidierender IM-WAI nach 6 Zyklen adjuvanter Carboplatin-/Taxane-Chemotherapie behandelt. Die ersten 10 Patientinnen wurden im Rahmen einer prospektiven Phase-I-Studie behandelt, danach wurden 6 Patientinnen analog zu dem Studienprotokoll behandelt. Bestrahlt wurde bis zu einer Gesamtdosis von 30 Gy in 1,5 Gy Fraktionen mittels ''step-and-shoot'' (n = 3) oder helikaler Tomotherapietechnik (n = 13). Das Zielvolumen umfasste die gesamte Peritonealhoehle, die Zwerchfellkuppeln, die Leberkapsel und die paraaortalen und pelvinen Lymphabflusswege. Risikoorgane waren die Nieren, das Leberparenchym, Herz und Knochen. Das mediane Follow-up betrug 44 Monate (Spanne 19,2-67,2 Monate). Unter Bestrahlung traten keine CTC-Grad-IV-Toxizitaeten auf und es fanden keine toxizitaetsbedingten Unterbrechungen statt. Beobachtete Grad-III-Akuttoxizitaeten waren Diarrhoe (25 %), Leukopenie (19 %), Uebelkeit/Erbrechen (6 %) und Thrombozytopenie (6 %). Insgesamt erlitten 6 Patientinnen einen Darmverschluss im spaeteren Verlauf (37 %). Die Ursachen dafuer waren postoperative Briden (19 %) und Peritonealkarzinose (19 %). Das mediane rezidivfreie Ueberleben (RFS) betrug 27,6 Monate (95 %-KI 24-44 Monate) und das mediane Gesamtueberleben betrug 42,1 Monate (95 %-KI 17-68 Monate). Die Peritonealhoehle war die haeufigste Rezidivstelle. Die konsolidierende IM-WAI ist machbar und klinisch gut vertraeglich. Die Daten zum RFS sind vielversprechend und rechtfertigen die Einleitung weiterer klinischer Studien. (orig.)

  15. Thermodynamik grundlagen und technische anwendungen

    CERN Document Server

    Baehr, Hans Dieter

    2009-01-01

    Für die aktualisierte 14. Auflage des bewährten Lehrbuchs der Technischen Thermodynamik wurde das Kapitel über Wärmekraftanlagen gründlich bearbeitet und durch einen Abschnitt zur Energiewandlung ergänzt: Die Energiebedarfsstruktur von Deutschland wird erläutert, und die möglichen Energiewandlungspfade werden diskutiert. Schwerpunkt des Buches ist die ausführliche und auch dem Anfänger verständliche Darstellung der Grundlagen der Thermodynamik mit der sorgfältigen Einführung der thermodynamischen Begriffe und den fundamentalen Bilanzgleichungen für Energie, Entropie und Exergie. Die thermodynamischen Eigenschaften reiner Fluide und fluider Gemische werden eingehend erläutert. Darauf aufbauend wird die Thermodynamik der Gemische und der chemischen Reaktionen entwickelt. Auch die thermodynamischen Aspekte wichtiger energie- und verfahrenstechnischer Anwendungen werden praxisnah behandelt: - Strömungs- und Arbeitsprozesse, - thermische Stofftrennverfahren, - Verbrennungsprozesse und Verbrennungsk...

  16. Results From the Phase III Randomized Trial of Onartuzumab Plus Erlotinib Versus Erlotinib in Previously Treated Stage IIIB or IV Non-Small-Cell Lung Cancer: METLung.

    Science.gov (United States)

    Spigel, David R; Edelman, Martin J; O'Byrne, Kenneth; Paz-Ares, Luis; Mocci, Simonetta; Phan, See; Shames, David S; Smith, Dustin; Yu, Wei; Paton, Virginia E; Mok, Tony

    2017-02-01

    Purpose The phase III OAM4971g study (METLung) examined the efficacy and safety of onartuzumab plus erlotinib in patients with locally advanced or metastatic non-small-cell lung cancer selected by MET immunohistochemistry whose disease had progressed after treatment with a platinum-based chemotherapy regimen. Patients and Methods Patients were randomly assigned at a one-to-one ratio to receive onartuzumab (15 mg/kg intravenously on day 1 of each 21-day cycle) plus daily oral erlotinib 150 mg or intravenous placebo plus daily oral erlotinib 150 mg. The primary end point was overall survival (OS) in the intent-to-treat population. Secondary end points included median progression-free survival, overall response rate, biomarker analysis, and safety. Results A total of 499 patients were enrolled (onartuzumab, n = 250; placebo, n = 249). Median OS was 6.8 versus 9.1 months for onartuzumab versus placebo (stratified hazard ratio [HR], 1.27; 95% CI, 0.98 to 1.65; P = .067), with a greater number of deaths in the onartuzumab arm (130 [52%] v 114 [46%]). Median progression-free survival was 2.7 versus 2.6 months (stratified HR, 0.99; 95% CI, 0.81 to 1.20; P = .92), and overall response rate was 8.4% and 9.6% for onartuzumab versus placebo, respectively. Exploratory analyses using MET fluorescence in situ hybridization status and gene expression showed no benefit for onartuzumab; patients with EGFR mutations showed a trend toward shorter OS with onartuzumab treatment (HR, 4.68; 95% CI, 0.97 to 22.63). Grade 3 to 5 adverse events were reported by 56.0% and 51.2% of patients, with serious AEs in 33.9% and 30.7%, for experimental versus control arms, respectively. Conclusion Onartuzumab plus erlotinib did not improve clinical outcomes, with shorter OS in the onartuzumab arm, compared with erlotinib in patients with MET-positive non-small-cell lung cancer.

  17. Steuern und Governance

    Directory of Open Access Journals (Sweden)

    Eduard Müller

    2014-05-01

    Full Text Available ENGLISH: Taxation, in the modern state, has long been a mass phenomenon with an interdisciplinary outlook. On the macro level of the state, a new generation of administrative reforms has crystallized under the label “good public governance”. These reforms seek to resolve regulatory interdependence of state and non - state actors by way of cooperation and interaction. In parallel, on the micro level of businesses, “corporate governance” – voluntary compliance with legal and ethical standards – has become an increasingly important issue. With a view to tax law and tax collection, these developments open up new possibilities to raise tax compliance by means of consensual and cooperative instruments and, accordingly, address taxation as a mass phenomenon. DEUTSCH: Besteuerung ist im modernen Staat ein Massenphänomen und längst interdisziplinär ausgerichtet. Auf der Makro-Ebene des Staates hat sich unter dem Begriff Good Public Governance eine neue Generation von Staats- und Verwaltungsreformen herausgebildet, die Regelungsbeziehungen von staatlichen und nichtstaatlichen Akteuren durch Kooperationen und Interaktionen zu lösen versucht. Parallel dazu hat auf der Mikro-Ebene der Unternehmen mit dem Thema Corporate Governance die freiwillige Einhaltung von rechtlichen und ethischen Regeln an Bedeutung gewonnen. Für das Steuerrecht und den Steuervollzug resultieren aus diesen Entwicklungen neue Möglichkeiten, durch Nutzung konsens- und kooperationsorientierter Instrumente die Tax Compliance zu erhöhen und so dem Massenphänomen Besteuerung gerecht zu werden.

  18. Osteoporose und Laktoseintoleranz

    Directory of Open Access Journals (Sweden)

    Obermayer-Pietsch B

    2008-01-01

    Full Text Available Laktosemalabsorption oder Laktoseintoleranz ist eine symptomatische Unverträglichkeit von Milchzucker (Laktose, zumeist aufgrund einer autosomal rezessiv erblichen, irreversiblen Abnahme des Enzyms Laktase im Jugendalter, die bei etwa der Hälfte der Weltbevölkerung auftritt. Die Betroffenen meiden oft instinktiv Milch und Milchprodukte wegen der damit verbundenen Malabsorptions-Symptome. Damit scheiden diese Nahrungsmittel aber auch als Kalziumlieferanten aus und es kann zu einer Mangelversorgung des Knochens mit Kalzium und damit zu Osteoporose kommen. Da in Österreich etwa 20–25 % der Bevölkerung betroffen sind, ist diese Stoffwechselveränderung nicht zu vernachlässigen. Diagnostische und begleitende ernährungsmedizinische Maßnahmen und gegebenenfalls eine osteotrope Therapie sollten zum Erhalt der Knochenmasse eingesetzt werden.

  19. MRI of the hyaline knee joint cartilage. Animal experimental and clinical studies; MRT des hyalinen Kniegelenkknorpels. Tierexperimentelle und klinische Untersuchungen

    Energy Technology Data Exchange (ETDEWEB)

    Adam, G. [Technische Hochschule Aachen (Germany). Klinik fuer Radiologische Diagnostik; Prescher, A. [Technische Hochschule Aachen (Germany). Inst. fuer Anatomie; Nolte-Ernsting, C. [Technische Hochschule Aachen (Germany). Klinik fuer Radiologische Diagnostik; Buehne, M. [Technische Hochschule Aachen (Germany). Klinik fuer Radiologische Diagnostik; Scherer, K. [Technische Hochschule Aachen (Germany). Inst. fuer Versuchstierkunde; Kuepper, W. [Technische Hochschule Aachen (Germany). Inst. fuer Versuchstierkunde; Guenther, R.W. [Technische Hochschule Aachen (Germany). Klinik fuer Radiologische Diagnostik

    1994-02-01

    The value of MR imaging for the detection of hyaline cartilage lesions using 2-D spin-echo and 3-D gradient-echo imaging was evaluated in an animal experiment in 10 dogs and in a clinical study in 30 patients. MR imaging findings were compared with histopathological and arthroscopy findings, respectively. Using MRI neither grade I nor grade II hyaline cartilage lesions were detectable. In the animal experiments 77% of grade III lesions and all the grade IV lesions were seen. However, in the clinical study only about the half of grade III and IV lesions were detected. 3-D gradient-echo MR imaging was superior to 2-D spin-echo imaging (p<0.001), while 3-D FLASH and 3-D FISP did not differ significantly in the detection rate (p<0.34). 3-D gradient-echo MR imaging seems to be the best method for the delineation of high grade cartilage lesions. However, early stages of cartilage degeneration are invisible even with this imaging modality. (orig.) [Deutsch] Die Wertigkeit der MRT in der Erfassung von Knorpellaesionen mit 2-D-Spin-Echo- und 3-D-Grafienten-Echo-Sequenzen wurde in einer tierexperimentellen Untersuchung an 10 Hunden sowie in einer klinischen Studie an 30 Patienten ueberprueft. Die kernspintomographischen Ergebnisse wurden mit dem pathologisch-anatomischen Befund bzw. der Arthroskopie verglichen. MR-tomographisch konnten weder Grad-I- noch Grad-II-Knorpellaesionen erfasst werden. Die Erkennbarkeitsrate der Grad-III- und -IV-Laesionen lag fuer die tierexperimentellen Untersuchungen bei 77 bzw. 100%, waehrend klinisch nur etwa 50% dieser Veraenderungen erkannt werden konnten. Dabei waren die 3-D-Gradienten-Echo-Sequenzen den 2-D-Spin-Echo-Sequenzen signifikant ueberlegen (p<0,001), waehrend sich die 3-D-Gradienten-Echo-Sequenzen FISP und FLASH nicht voneinander unterschieden (p<0,34). Derzeit muessen die 3-D-Gradienten-Echo-Sequenzen als die beste Methode zur Erfassung hoehergradiger Knorpellaesionen angesehen werden. Fruehe Stadien der Knorpelschaedigung sind

  20. R+D project KEWA. Cooperative development of economically efficient applications for environment, traffic and neighbouring fields in new administrative structures. Phase III 2007/08; F+E-Vorhaben KEWA. Kooperative Entwicklung wirtschafticher Anwendungen fuer Umwelt, Verkehr und benachbarte Bereiche in neuen Verwaltungsstrukturen. Phase III 2007/08

    Energy Technology Data Exchange (ETDEWEB)

    Mayer-Foell, R.; Keitel, A.; Geiger, W. (eds.)

    2008-07-15

    of a tide information and warning system in Baden-Wueerttemberg; (m) ABR-Research - System for an automatic calculation of the spreading of radioactive contaminants on the basis of data of DWD prognosis; (n) Ontology KFUeportal - Ontology of the remote control of nuclear reactors in the application; (o) ZSU III/IV - Application of object orientated model catalogues and processes in the combination of street informations and environmental informations; (p) UIS-UDDI - Further development of service sites for the UIS BW; (q) UIS Media - Enlargement of the web offer via UIS BW; () Prospect KEWA IV - Prospect to the planned R+D activities in phase IV.

  1. The removal of toxic metals from liquid effluents by ion exchange resins. Part IV: Chromium(III)/H+ /Lewatit SP112; La eliminación de metales tóxicos presentes en efluentes líquidos mediante resinas de cambio iónico. Parte IV: cromo(III)/H+/Lewatit SP112

    Energy Technology Data Exchange (ETDEWEB)

    Alguacil, F.J.

    2017-09-01

    This investigation presented results on the removal of chromium(III), from aqueous solution in the 0-5 pH range, using Lewatit SP112 cationic exchange resin. Several aspects affecting the ion exchange process were evaluated, including: the influence of the stirring speed, temperature, pH of the solution, resin dosage and aqueous ionic strength. The selectivity of the system was tested against the presence of other metals in the aqueous solution, whereas the removal of chromium(III) from solutions was compared with results obtained using multiwalled carbon nanotubes as adsorbents. From the batch experimental data, best fit of the results is obtained with the Langmuir model, whereas the ion exchange process is best explained by the pseudo-second order model, moreover, experimental data responded well to the film-diffusion controlled model. Elution of the chromium(III) loaded into the resin is well accomplished by the use of sodium hydroxide solutions. [Spanish] En este trabajo se presentan los resultados obtenidos en la eliminación de cromo(III) de disoluciones acuosas (pH 0-5) mediante la resina de intercambio catiónico Lewatit SP112. Se han investigado algunas variables que pueden afectar al sistema: influencia de la agitación, temperatura, pH y fuerza iónica del medio acuoso y cantidad de resina; también se ha investigado acerca de la selectividad del sistema cuando otros metales están presentes en el medio acuoso, comparándose los resultados de la eliminación del cromo(III) usando la resina con los resultados obtenidos cuando se emplea otro adsorbente como son los nanotubos de carbono de pared múltiple. Los resultados experimentales indican que la carga del cromo(III) en la resina responde mejor al modelo de Langmuir, mientras que los modelos cinéticos indican que la carga del metal en la resina responde al modelo de pseudo-segundo orden y difusión en la capa límite. La elución del cromo(III) se realiza con disoluciones de hidróxid.

  2. Simultaneous speciation of arsenic (As(III), MMA, DMA, and As(V)) and selenium (Se(IV), Se(VI), and SeCN{sup -}) in petroleum refinery aqueous streams

    Energy Technology Data Exchange (ETDEWEB)

    Tonietto, Gisele B.; Godoy, Jose M.; Oliveira, Ana Cristina [Pontificia Universidade Catolica do Rio de Janeiro, Rio de Janeiro, RJ (Brazil); Souza, Marcia V. de [Petrobras/Cenpes, Research and Development Center, Rio de Janeiro (Brazil)

    2010-07-15

    High-performance liquid chromatography (HPLC) coupled to an ICP-MS with an octapole reaction system (ORS) has been used to carry out quantitative speciation of selenium (Se) and arsenic (As) in the stream waters of a refining process. The argon dimers interfering with the {sup 78}Se and {sup 80}Se isotopes were suppressed by pressurizing the octapole chamber with 3.1 mL min{sup -1} H{sub 2} and 0.5 mL min{sup -1} He. Four arsenic species arsenite - As(III), arsenate (As(V)), monomethylarsonic acid (MMA), and dimethylarsinic acid (DMA) - and three inorganic Se species - selenite Se(IV), selenate Se(VI), and selenocyanate (SeCN{sup -}) - were separated in a single run by ion chromatography (IC) using gradient elution with 100 mmol L{sup -1} NH{sub 4}NO{sub 3}, pH 8.5, adjusted by addition of NH{sub 3}, as eluent. Repeatabilities of peak position and of peak area evaluation were better than 1% and about 3%, respectively. Detection limits (as 3{sigma} of the baseline noise) were 81, 56, and 75 ng L{sup -1} for Se(IV), Se(VI), and SeCN{sup -}, respectively, and 22, 19, 25, and 16 ng L{sup -1} for As(III), As(V), MMA, and DMA, respectively. Calibration curve R {sup 2} values ranged between 0.996 and 0.999 for the arsenic and selenium species. Column recovery for ion chromatography was calculated to be 97 {+-} 6% for combined arsenic species and 98 {+-} 3% for combined selenium species. Because certified reference materials for As and Se speciation studies are still not commercially available, in order to check accuracy and precision the method was applied to certified reference materials, BCR 714, BCR 1714, and BCR 715 and to two different refinery samples - inlet and outlet wastewater. The method was successfully used to study the quantitative speciation of selenium and arsenic in petroleum refinery wastewaters. (orig.)

  3. Teilchendetektoren Grundlagen und Anwendungen

    CERN Document Server

    Kolanoski, Hermann

    2016-01-01

    In diesem Buch werden die experimentellen Grundlagen von Teilchendetektoren und ihre Anwendung in Experimenten beschrieben. Die Entwicklung von Detektoren ist ein wichtiger Bestandteil der Teilchen-, Astroteilchen- und Kernphysik und gehört daher zum Handwerk des Experimentalphysikers in diesen Gebieten. Dieses umfassende Werk beinhaltet den kompletten Stoff für entsprechende Master-Module in der experimentellen Teilchenphysik, geht aber im Inhalt auch darüber hinaus. Zielgruppe sind Studierende, die sich in die Materie vertiefen möchten, aber auch Lehrende und Wissenschaftler, die das Buch zum Einstieg in das wissenschaftliche Arbeiten an Detektorentwicklungen verwenden können. Zielrichtung des Buches ist, die physikalischen Grundlagen für die Detektoren und ihrer verschiedenen Ausführungen so klar wie möglich und so tiefgehend wie nötig darzustellen. Die Breite des für die Detektorentwicklung nötigen Wissens umfasst viele Bereiche der Physik und Technik, von den Wechselwirkun...

  4. Mediendidaktik und Wissensmanagement

    Directory of Open Access Journals (Sweden)

    Gabi Reinmann-Rothmeier

    2002-10-01

    Full Text Available Mediendidaktik und Wissensmanagement – das ist auf den ersten Blick ein ungleiches Paar: Die Mediendidaktik ist eine Teildisziplin der (Medien- Pädagogik, während Wissensmanagement ein genuin wirtschaftliches Thema mit betriebswirtschaftlichen Akzenten ist. Annäherungen zwischen der Mediendidaktik und Wissensmanagement gibt es zum einen durch den sog. E-Learning-Trend seitens der Wirtschaft, der mediendidaktisches Wissen und Können auf den Plan ruft, zum anderen durch wachsendes Interesse am Thema Wissensmanagement seitens der Pädagogik. Der Beitrag beschreibt sowohl für das E-Learning als auch für das Wissensmanagement aus pädagogisch-psychologischer Sicht jeweils ein Orientierungsmodell; beide Modelle machen die Berührungspunkte zwischen Mediendidaktik und Wissensmanagement deutlich. Neben einem Überblick über wirtschaftliche Argumente für eine Verschmelzung von E-Learning und Wissensmanagement werden aufbauend auf den beiden Orientierungsmodellen theoretische und praktische Verbindungslinien zwischen E-Learning und Wissensmanagement sowie die Rolle der Mediendidaktik in dem daraus entstehenden Wechselverhältnis herausgearbeitet.

  5. [Kombinierte Anwendung von Strahlentherapie und adjuvanter Therapie mit einem Mistelextrakt (Viscum album L.) zur Behandlung des oralen malignen Melanoms beim Hund: Eine retrospektive Studie].

    Science.gov (United States)

    von Bodungen, Uta; Ruess, Katja; Reif, Marcus; Biegel, Ulrike

    2017-01-01

    Hintergrund: Orale maligne Melanome (OMM) des Hundes zeichnen sich durch schnelles Wachstum, lokale Invasion und hohe Metastasierungsraten aus. Extrakte auf Basis von Viscum album L. (VAE) werden zunehmend in der Krebstherapie sowohl in der Human- als auch in der Veterinärmedizin eingesetzt. Ziel unserer Studie war es zu untersuchen, inwieweit die adjuvante Therapie mit VAE eine therapeutische Option zur Behandlung von OMM ist. Besonderes Augenmerk galt dabei der Überlebenszeit und möglichen Nebenwirkungen. Tiere und Methoden: 26 Hunde mit OMM, die in einem der größten veterinäronkologischen Zentren der Schweiz allesamt eine Strahlentherapie erhielten (teilweise nach operativer Tumorresektion) wurden in die retrospektive Studie eingeschlossen: 18 Hunde wurden mit VAE behandelt (1 ml VAE (Iscador®) in ansteigenden Konzentrationen von 0,1 bis 20 mg/ml subkutan 3-mal pro Woche (VAE-Gruppe), 8 erhielten keine adjuvante Behandlung (Vergleichsgruppe). Wir verglichen die Größenentwicklung der OMM sowie die Überlebenszeit. Ergebnisse: Patienten mit Bestrahlung und adjuvanter VAE-Therapie zeigten mit 236 Tagen eine signifikant längere mediane Überlebenszeit im Vergleich zu Patienten mit Bestrahlung, aber ohne adjuvante VAE-Therapie (49 Tage; Log-Rank-Test: p = 0,0047). Die VAE-Therapie verlängerte die Überlebenszeit um mehr als zwei Drittel (Hazard Ratio (HR) = 0,30, 95%-Konfidenzintervall (KI) 0,11-0,86; p = 0,024), während ein höheres Tumorstadium gemäß UICC (Union internationale contre le cancer) einen statistischen Trend zur Verdopplung des Sterberisikos zeigte (UICC-Stadium III/IV vs. I/II: HR = 2,12, 95%-KI 0,88-5,12; p = 0,095). Zwei Patienten zeigten milde Nebenwirkungen während der VAE-Behandlung. Einer der beiden zeigte 1 Tag lang ein selbstlimitiertes Fieber, bei dem anderen Patienten reduzierten wir die Dosis von einem konzentrierteren zu einem weniger konzentrierten VAE (Serie 0) aufgrund von Müdigkeit, die daraufhin verschwand

  6. Lessing und der Islam

    OpenAIRE

    Muslim, Zahim Mohammed

    2010-01-01

    „Lessing und der Islam“ beschäftigt sich unparteiisch mit Lessings Auseinandersetzung mit dem Islam. Die Arbeit setzt sich das Ziel, den Leser und den Literaturkennern sowie der deutschen Bibliothek der Germanistik etwas von Lessings Auseinandersetzung mit dem Islam in die Hand zu geben, die bis heute als großes Modell für die interkulturelle und interreligiöse Menschheitstoleranzdebatte im Gedächtnis der deutschen Literatur vorhanden ist. Im ersten Teil widmet sich die vorliegende Arbeit de...

  7. Trauma und Terror

    OpenAIRE

    Szyszkowitz, T. (Tessa)

    2007-01-01

    1. Einleitung Ausgehend von der Fragestellung, warum gerade bei Tschetschenen und Palästinensern der Selbstmordterrorismus in den letzten Jahren so populär geworden ist, analysiert die Autorin die Geschichte dieser beiden Völker. Einer der Gründe ist bisher wenig beachtet worden. Der Einfluss eines kollektiven Traumas, das als solches nicht anerkannt, behandelt und auch nicht einer politischen Lösung zugeführt wurde. 2. Geschichte der Palästinenser und Tschetschenen Im Zuge der Err...

  8. Facile in-situ reduction: Crystal growth and magnetic studies of reduced vanadium (III/IV) silicates CaxLn1-xVSiO5 (Ln = Ce-Nd, Sm-Lu, Y)

    Science.gov (United States)

    Abeysinghe, Dileka; Smith, Mark D.; Morrison, Gregory; Yeon, Jeongho; zur Loye, Hans-Conrad

    2018-04-01

    A series of lanthanide containing mixed-valent vanadium (III/IV) silicates of the type CaxLn1-xVSiO5 (Ln = Ce-Nd, Sm-Lu, Y) was synthesized as high quality single crystals from a molten chloride eutectic flux, BaCl2/NaCl. Utilizing Ca metal as the reducing agent, an in-situ reduction of V5+ to V3+/4+ as well as of Ce4+ to Ce3+ was achieved. The structures of 14 reported isostructural compounds were determined by single crystal X-ray diffraction. They crystallize in the tilasite (CaMgAsO4F) structure type in the monoclinic space group C2/c. The extended structure contains 1D chains of VO6 octahedra that are connected to each other via SiO4 groups and (Ca/Ln)O7 polyhedra. The magnetic susceptibility and the field dependent magnetization data were measured for CaxLn1-xVSiO5 (Ln = Ce-Nd, Sm, Gd-Lu, Y), and support the existence of antiferromagnetic behavior at low temperatures.

  9. Layer silicates modified with 1,4-bis(3-aminopropyl)piperazine for the removal of Th(IV), U(VI) and Eu(III) from aqueous media

    Energy Technology Data Exchange (ETDEWEB)

    Guerra, Denis L., E-mail: dlguerra@iqm.unicamp.br [Chemistry Institute, State University of Campinas, P.O. Box 6154, 13084-971 Campinas, Sao Paulo (Brazil); Pinto, Alane A. [Chemistry Institute, State University of Campinas, P.O. Box 6154, 13084-971 Campinas, Sao Paulo (Brazil); Viana, Rubia R. [Universidade Federal de Mato Grosso, UFMT, Centro de Recursos Minerais, Cuiaba, Mato Grosso 78060 900 (Brazil); Airoldi, Claudio [Chemistry Institute, State University of Campinas, P.O. Box 6154, 13084-971 Campinas, Sao Paulo (Brazil)

    2009-11-15

    Natural montmorillonite (M) and synthetic kanemite (K) have been functionalized with 1,4-bis(3-aminopropyl)piperazine reacted with methylacrylate to yield new inorganic-organic chelating materials. The original and modified materials were characterized by X-ray diffractometry, textural analysis, SEM and nuclear magnetic nuclei of carbon-13 and silicon-29. The chemically modified clay samples (M-APPMA and K-APPMA) showed modification of its physical-chemical properties including: specific area 45.0 m{sup 2} g{sup -1} (M) to 978.8 m{sup 2} g{sup -1} (M-APPMA) and 23.5 m{sup 2} g{sup -1} (K) to 898.9 m{sup 2} g{sup -1} (K-APPMA). The ability of these materials to remove thorium(IV), uranyl(VI) and europium(III) from aqueous solution was followed by a series of adsorption isotherms, which were fitted to non-linear Sips adsorption isotherm model. To achieve the best adsorption conditions the influence of pH and variation of metal concentration were investigated. The energetic effects ({Delta}{sub int}H{sup o}, {Delta}{sub int}G{sup o} and {Delta}{sub int}S{sup o}) caused by metal ions adsorption were determined through calorimetric titrations.

  10. Layer silicates modified with 1,4-bis(3-aminopropyl)piperazine for the removal of Th(IV), U(VI) and Eu(III) from aqueous media

    International Nuclear Information System (INIS)

    Guerra, Denis L.; Pinto, Alane A.; Viana, Rubia R.; Airoldi, Claudio

    2009-01-01

    Natural montmorillonite (M) and synthetic kanemite (K) have been functionalized with 1,4-bis(3-aminopropyl)piperazine reacted with methylacrylate to yield new inorganic-organic chelating materials. The original and modified materials were characterized by X-ray diffractometry, textural analysis, SEM and nuclear magnetic nuclei of carbon-13 and silicon-29. The chemically modified clay samples (M-APPMA and K-APPMA) showed modification of its physical-chemical properties including: specific area 45.0 m 2 g -1 (M) to 978.8 m 2 g -1 (M-APPMA) and 23.5 m 2 g -1 (K) to 898.9 m 2 g -1 (K-APPMA). The ability of these materials to remove thorium(IV), uranyl(VI) and europium(III) from aqueous solution was followed by a series of adsorption isotherms, which were fitted to non-linear Sips adsorption isotherm model. To achieve the best adsorption conditions the influence of pH and variation of metal concentration were investigated. The energetic effects (Δ int H o , Δ int G o and Δ int S o ) caused by metal ions adsorption were determined through calorimetric titrations.

  11. Histones H10a and H10b are the same as CHO histones H1(III) and H1(IV):new features of H10 phosphorylation during the cell cycle

    International Nuclear Information System (INIS)

    D'Anna, J.A.; Gurley, L.R.; Becker, R.R.

    1981-01-01

    Two histone H1 fractions [H1(I) and H1(II) and two histone H1 0 fractions (H1 0 a and H1 0 b) have been isolated from butyrate-treated Chinese hamster (line CHO) cells by guanidine hydrochloride gradient chromatography on Bio-Rex 70 ion-exchange resin. The fractions have been identified by electrophoresis and amino acid analyses. Electrophoretic analysis of cyanogen bromide treated H1 0 in long acid-urea-polyacrylamide gels suggests that H1 0 a and H1 0 b differ, at least, within the 20-30 residue fragment(s) removed by the cyanogen bromide clevage. Shallow-gradient Bio-Rex 70 chromatography indicates that histones H1 0 a and H1 0 b are the same as the respective CHO histones, H1(III) and H1(IV). This identification and the phosphate incorporation data of Gurley et al. (1975) reveal new features about H1 0 phosphorylation: (1) following release from G 1 arrest, H1 0 a and H1 0 b become phosphorylated in late G 1 prior to DNA synthesis; (2) H1 0 a and H1 0 b are phosphorylated at similar rates throughout the cell cycle. These and other data demonstrate that histone H1 0 is phosphorylated in a cell cycle dependent fashion which mimics that of histone H1

  12. Analysis of the J/ψ and ψ(2S) decay into γπ{sup +}π{sup -}η in BES III and developments for the readout of the Panda-EMC; Analyse des J/ψ- und ψ(2S)-Zerfalls in γπ{sup +}π{sup -}η bei BES III und Entwicklungen zur Auslese des Panda-EMC

    Energy Technology Data Exchange (ETDEWEB)

    Leyhe, Michael

    2013-07-09

    The present thesis deals with two experiments, which perform on the field of the hadron spectroscopy fundamental research. These are the existing BES III experiment, from which data from charmonium decay are analyzed and the future PANDA experiment, for which in this thesis the readout of the forward end cap of the electromagnetic calorimeter is developed. In the first part the radiative decays of ψ(2S) and J/ψ into γ(π{sup +}π{sup -}η) are analyzed for the study of the η(1405) meson. This state is considered as possible glueball candidate, because among others the pseudoscalar-meson nonet with the η(1405), η(1295), and η(1475) is overoccupied by one particle and other experiments assign to the η(1405) a large gluonic contribution. The production of the η(1475) can, as confirmed by other experiments, ot be observed in the decay into π{sup +}π{sup -}η.The η(1295) however is identified in the framework of a partial-wave analysis in the decay J/ψ→γπ{sup +}π{sup -}η. This succeeded previously only in the DM2 experiment, indeed with distinctly lower statistics and corresponding uncertainties. A possible solution of the problem of the overoccupation, the non-existence of the η(1295), cannot be confirmed by the results presented in this thesis. Furthermore the branching ratios of different decays are determined. The high event-rate allows to determine some decay probabilities for the first time respectively clearly more precisely. The partial waves contributing in the decay J/ψ→γπ{sup +}π{sup -}η can be determined by a mass-independent partial-wave analysis and brought into connection with known resonances. In the second part of the thesis the development and optimization of the photodetector-preamplifier units used for the readout of the forward end cap of the electromagnetic calorimeter are shown. A manifold of these detector-units were produced for a prototype of the forward end cap and tested in subsequent test-beam times under real

  13. Studies on II-VI and III-V semiconductor nanostructures. Introduction of the core/shell/shell structure and development of CdSe nanocrystals in an automatized procedure; Untersuchungen an II-VI und III-V Halbleiternanostrukturen. Einfuehrung der Core/shell/shell-Struktur und Darstellung von CdSe-Nanokristallen in einem automatisierten Verfahren

    Energy Technology Data Exchange (ETDEWEB)

    Mekis, I.

    2005-11-15

    The work in this dissertation is focused on the development and characterization of fluorescent II-VI and III-V-Nanomaterials. Highly luminescent and photostable Nanocrystals with narrow size distributions were prepared. It was shown that nearly monodisperse CdSe-Nanocrystals could be prepared from Cd(Ac){sub 2} and TOPSe in a mixture of TOPO/TOP/HDA/TDPA. Nearly monodisperse CdSe/CdS-Core/shell-Nanocrystals have been prepared in a one-pot-synthesis by injection of H{sub 2}S-Gas into a freshly prepared crude solution of CdSe. The passivation of the CdSe-core with an inorganic shell of CdS resulted in the drastic improvement of the photoluminescence-efficiency of the colloidal solution. Reproducible room-temperature quantum yields reached up to a value of 85%. Photostability investigations have proved the enhanced stability of CdSe/CdS-Nanocrystals compared to CdSe-Nanocrystals under illumination with UV-Light. A novel type of luminescent semiconductor nanocrystal structure has been developed, consisting of a CdSe core and two anorganic shells. Highly fluorescent and nearly monodisperse CdSe/CdS/ZnS- and CdSe/ZnSe/ZnS-Core/shell/shell-nanocrystals have been prepared via organometallic- and acetate-precursors. The Core/she ll/shell particles reached reproducible room-temperature quantum yields up to 85%. Photostability investigations among CdSe-core, CdSe/CdS-Core/shell- and CdSe/CdS/ZnS- Core/shell/-shell-nanocrystals under illumination with UV-light have proved the highest photostability of the Core/shell/shell-particles. The photostabilities of CdSe/ZnSe/ZnS-and CdSe/ZnS-nanocrystals were compared under illumination with intense laser-beam in air. Another part of this work focused on the development of an automated synthesis procedure of CdSe-nanocrystals by constructing and implementing a flow-reactor system. The size and structure of prepared nanocrystals depended considerably on the Cd:Se-precursorratio and the flow-rate. The preparation of CdSe using Cd(Ac)2

  14. Integration, Informationslogistik und Architektur

    OpenAIRE

    Turowski, Klaus

    2006-01-01

    Integration, Informationslogistik und Architektur : DW2006 ; 21./22.09.2006 in Friedrichshafen, Germany / Klaus Turowski ... (Hrsg.). - Bonn : Ges. für Informatik, 2006. - 490 S. - (GI-Edition / Proceedings ; 90)

  15. Supraleitung Grundlagen und Anwendungen

    CERN Document Server

    Buckel, Werner

    2004-01-01

    Seit nunmehr drei Jahrzehnten ist der "Buckel" das Referenzwerk in deutscher Sprache zum Thema Supraleitung. Immer wieder aktualisiert, hat das Lehrbuch Generationen von Studenten begleitet. In der 6., vollständig überarbeiteten Auflage wird das bewährte didaktische Konzept beibehalten, inhaltlich wurde der Band dem aktuellen Stand von Forschung und Technik angepasst. Das Autorenteam um Prof. Kleiner verzichtet auf komplizierte mathematische Herleitungen. Es baut ganz auf das bewährte Step-by-Step-Prinzip: Der Schwierigkeitsgrad wird von Kapitel zu Kapitel gesteigert. So können auch Einsteiger ohne einschlägige Vorkenntnisse dem Stoff bequem folgen. Dank seiner klaren Sprache und zahlreicher Abbildungen eignet sich der Band hervorragend als einführendes Lehrbuch - und zwar nicht nur für Physik-Studenten, sondern auch für Studierende angrenzender Natur- und Ingenieurwissenschaften. Grundlegende Eigenschaften, supraleitende Elemente, Cooper-Paarung, Thermodynamik, kritische Ströme, Josephsonkontakte...

  16. Ausbildung und Erwartungshaltung

    Science.gov (United States)

    Knoke, Holger

    1997-09-01

    werden Geologiestudenten zeitgemäß ausgebildet? Wird in der Angewandten Geologie das gelehrt, was in Wirtschaftsunternehmen an Wissen von einem Geologen erwartet wird? Erfolgt die spezielle Ausbildung zum Hydrogeologen fundiert und umfassend? Eine Antwort auf diese Fragen kann sicherlich nicht allumfassend gegeben werden, da sie von der jeweiligen Sichtweise abhängig ist. Ein Geologieprofessor wird die Ausbildung seiner Studenten im Großen und Ganzen als zeitgemäß einstufen, eventuell hier und da Verbesserungen für möglich halten. Auffällig ist die hohe Anzahl der in den letzten Jahren bereits geänderten oder zur Änderung anstehenden Studienordnungen. Es zeigt, daß die Straffung des Studiums sowie eine zumindest teilweise neue Wichtung der Schwerpunkte notwendig war bzw. ist, wobei im allgemeinen eine höhere Stundenzahl in den Grundlagenfächern Mathematik, Physik und Chemie angesetzt wird. Betrachtet man die Gesamtstundenzahlen der alten und der reformierten Studienordnungen, kann jedoch von einer Kürzung der Pflichtstunden in den meisten Fällen nicht die Rede sein. Eine grundlegende Reform des Geologiestudiums ist zur Zeit nicht zu erkennen, eher eine Verschulung des Studienganges. Die Entwicklung scheint zur Zeit weg von der freien Kurswahl und hin zu Modulangeboten mit vorgegebenen Kursen und Reihenfolgen zu gehen. Für die Hydrogeologie-Professoren ist es sicherlich nicht einfach zu entscheiden und in ihrem Kollegenkreis durchzusetzen, was aus dem generellen geowissenschaftlichen Kursangebot für einen Hydrogeologen notwendig oder aber entbehrlich ist. Genügen die Grundlagen der Paläontologie und der Mineralogie? Kann man ganz darauf verzichten? Was erwarten Behörden und Wirtschaftsunternehmen an allgemeinen und Spezialkenntnissen? Geologische Landesämter z. B. wollen, pauschal betrachtet, Geologen alten Stils. Ist ausdrücklich ein Angewandter Geologe oder speziell ein Hydrogeologe erwünscht, soll dieser die Spezialkenntnisse zus

  17. Nationale und transnationale Vernetzung polnischer Städte und Regionen: Auf dem Weg zu einer nachhaltigen Stadt- und Regionalentwicklung

    OpenAIRE

    Dorsch, Pamela

    2003-01-01

    "Die Studie 'Nationale und transnationale Vernetzung polnischer Städte und Regionen - Bedeutung für eine nachhaltige Stadt- und Regionalentwicklung' liefert einen Überblick über die Einbindung polnischer Kommunen und Wojewodschaften in allgemeine und politikfeldspezifische Netzwerke auf nationaler und transnationaler Ebene. Besondere Berücksichtigung findet hierbei die Vernetzung in Fragen von Nachhaltigkeit und des Umweltschutzes. Einführend zeigt die Studie den Prozess zunehmender Dezentral...

  18. IVS Organization

    Science.gov (United States)

    2004-01-01

    International VLBI Service (IVS) is an international collaboration of organizations which operate or support Very Long Baseline Interferometry (VLBI) components. The goals are: To provide a service to support geodetic, geophysical and astrometric research and operational activities. To promote research and development activities in all aspects of the geodetic and astrometric VLBI technique. To interact with the community of users of VLBI products and to integrate VLBI into a global Earth observing system.

  19. Zwischen Freakout und Normcore

    Directory of Open Access Journals (Sweden)

    Beate Großegger

    2017-06-01

    Full Text Available Bis Ende des 20. Jahrhunderts war Rebellion jugendkulturell ein großes Thema. Heute hat die Jugend das so genannte Establishment aus den Augen verloren; die breite Mehrheit gibt sich postheroisch, setzt auf individualitätsbezogene Werte und träumt, eingeschlossen in ihre bunten Lifestyleblasen, von einem perfekten Leben. Bezugnehmend auf aktuelle Befunde der Jugend- und Generationenforschung gibt Beate Großegger in ihrem Beitrag einen Überblick über die wichtigsten Werte- und Lifestyletrends im frühen 21. Jahrhundert und zeigt dabei, wie sehr die heutige Jugend Kind ihrer Zeit und Produkt gesellschaftlicher Rahmenbedingungen ist. Until the late 20th century rebellion was an important aspect of various youth subcultures. But today’s youth has a different mindset. The majority acts post-heroically, i.e. they rather focus on their individual, their private lifestyle than opposing against the establishment. Wrapped in their lifestyle filterbubbles, they dream of a perfect life. Based on recent youth und generation studies Beate Großegger gives an overview of the most important youth cultural trends in the fields of values and lifestyles and introduces today’s youth as a child of our times.

  20. Neue Laser und Strahlquellen - alte und neue Risiken?

    DEFF Research Database (Denmark)

    Paasch, Uwe; Schwandt, Antje; Seeber, Nikolaus

    2017-01-01

    Die Entwicklungen im Bereich dermatologischer Laser, hochenergetischer Blitzlampen, LED und neuer Energie- und Strahlquellen der letzten Jahre haben gezeigt, dass mit neuen Wellenlängen, Konzepten und Kombinationen zusätzliche, zum Teil über den ästhetischen Bereich hinaus gehende therapeutische ...

  1. Second-line Treatment of Stage III/IV Non-Small-Cell Lung Cancer (NSCLC with pemetrexed in routine clinical practice: Evaluation of performance status and health-related quality of life

    Directory of Open Access Journals (Sweden)

    Schuette Wolfgang

    2012-01-01

    Full Text Available Abstract Background Second-line treatment of advanced non-small-cell lung cancer (NSCLC improves overall survival. There is a lack of data regarding the impact on patients' overall health condition. This prospective, non-interventional study evaluated performance status (PS and health-related quality of life (HR-QoL during second-line pemetrexed treatment in routine clinical practice. Methods Stage III/IV NSCLC patients who initiated second-line pemetrexed (standard vitamin and dexamethasone supplementation were observed for a maximum of 9 treatment cycles. The primary objective was to evaluate the proportion of patients achieving improvement of Karnofsky Index (KI of ≥ 10% (absolute or maintaining KI ≥ 80% after the second treatment cycle ("KI benefit response". HR-QoL was self-rated using the EuroQoL-5D questionnaire (EQ-5D. Factors potentially associated with KI benefit response were evaluated using logistic regression models. Results Of 521 eligible patients (73.5% Stage IV, median age 66.3 yrs, 36.1% ≥ 70 yrs, 62.0% with KI ≥ 80%, 471 (90.4% completed at least 2 treatment cycles. 58.0% (95%CI 53.6%;62.2% achieved KI benefit response after the second cycle. Patients with baseline KI ≥ 80%, no Grade 3/4 toxicities during the first 2 cycles, or combination regimen as prior first-line therapy were more likely to achieve a KI benefit response. EQ-5D scores improved over time. Grade 3/4 toxicities were reported in 23.8% of patients (mainly fatigue/asthenia 15.9%, neutropenia 8.7%. Conclusions In this large prospective, non-interventional study of second-line pemetrexed treatment in patients with advanced NSCLC, including 36% elderly patients ( ≥ 70 years, physician-rated PS and self-rated HR-QoL were maintained or improved in the majority of patients. Trial registration Registered on ClinicalTrials.gov (NCT00540241 on October 4, 2007

  2. Führung und Machiavellismus

    NARCIS (Netherlands)

    Belschak, F.D.; den Hartog, D.N.; Felfe, J.

    2015-01-01

    In diesem Beitrag wird der Zusammenhang zwischen Führung und Machiavellismus aus zwei verschiedenen Perspektiven betrachtet. Zum einen werden neuere Forschungsergebnisse referiert, wie machiavellistische Mitarbeiter auf verschiedene Führungsstile ihres Vorgestzten reagieren und so mit Hinblick auf

  3. Netzformen und VDE-Bestimmungen

    Science.gov (United States)

    Bernstein, Herbert

    Der Verband Deutscher Elektrotechniker (VDE) hat eine Reihe von Vorschriften ausgearbeitet, die dem Schutz von Leben und Sachen beim Umgang mit elektrischer Energie dienen. Besonders wichtig sind die in den VDE-Bestimmungen 0100 und 0411 festgelegten Vorschriften.

  4. Delegation und Kooperation im Gesundheitswesen

    OpenAIRE

    Rosenau, Henning

    2010-01-01

    Delegation und Kooperation im Gesundheitswesen. - In: Tıpta işbirliği ve hukuksal sorunlar = Delegation und Kooperation im Gesundheitswesen / ed.: Hakan Hakeri ... - Samsun : Adalet, 2010. - S. 7-18

  5. Risiko Video- und Computerspiele? Eine Studie über Video- und Computerspielnutzung und Aggression bei 12- und 16- jährigen Jugendlichen

    OpenAIRE

    Schiller, Eva-Maria; Strohmeier, Dagmar; Spiel, Christiane

    2009-01-01

    Video -und Computerspielen ist heutzutage eine beliebte Freizeitaktivität von Kindern und Jugendlichen, besonders von Jungen. Trotz der großen Vielfalt der angebotenen Video- und Computerspiele für Kinder und Jugendliche, konzentriert sich die Forschung vorwiegend auf negative Einflüsse von gewalthaltigen Video- und Computerspielen. Da nicht alle Kinder und Jugendliche ausschließlich gewalthaltige Video- und Computerspiele spielen, betrachten wir diesen Fokus in der Wissenschaft als zu eng ge...

  6. [The initial (I and II) and advanced (III and IV) stages of juvenile patellar chondromalacia. Its diagnosis by magnetic resonance using a 1.5-T magnet with FLASH sequences].

    Science.gov (United States)

    Macarini, L; Rizzo, A; Martino, F; Zaccheo, N; Angelelli, G; Rotondo, A

    1998-06-01

    Juvenile patellar chondromalacia is a common orthopedic disorder which can mimic other conditions; early diagnosis is mandatory to prevent its evolution into osteoarthrosis. In the early stages of patellar chondromalacia (I and II), the lesions originate in the deep cartilage layer and the joint surface is not affected. Arthroscopy can demonstrate joint surface changes only and give indirect information about deeper lesions. We investigated the yield of 2D FLASH MRI with 30 degrees flip angle and a dedicated coil in the diagnosis of patellar chondromalacia, especially in its early stages. Eighteen patients (mean age: 21 years) with clinically suspected patellar chondromalacia were examined with MRI; 13 of them were also submitted to arthroscopy. A 1.5 T unit with a transmit-and-receive extremity coil was used. We acquired T1 SE sequences (TR/TE: 500-700/15/20) and 2D T2* FLASH sequence (TR/TE/FA: 500-800/18/30 degrees). The field of view was 160-180 mm and the matrix 192 x 256, with 2-3 NEX. The images were obtained on the axial plane. The lesions were classified in 4 stages according to Shahriaree classification. Agreement between MR and arthroscopic findings was good in both early and advanced lesions in 12/13 cases. Early lesions appeared as hyperintense focal thickening of the hyaline cartilage (stage I) or as small cystic lesions within the cartilage and no articular surface involvement (stage II). The medial patellar facet was the most frequent site. Advanced lesions appeared as articular surface ulcerations, thinning and cartilage hypointensity (stage III); stage IV lesions presented as complete erosions of the hyaline cartilage and hypointense underlying bone. 2D FLASH MRI with 30 degrees flip angle can show the differences in water content in the cartilage and thus permit to detect early chondromalacia lesions in the deep cartilage.

  7. Induction therapy with cetuximab plus docetaxel, cisplatin, and 5-fluorouracil (ETPF) in patients with resectable nonmetastatic stage III or IV squamous cell carcinoma of the oropharynx. A GERCOR phase II ECHO-07 study

    International Nuclear Information System (INIS)

    Chibaudel, Benoist; Lacave, Roger; Lefevre, Marine; Soussan, Patrick; Antoine, Martine; Périé, Sophie; Belloc, Jean-Baptiste; Banal, Alain; Albert, Sébastien; Chabolle, Frédéric; Céruse, Philippe; Baril, Philippe; Gatineau, Michel; Housset, Martin; Moukoko, Rachel; Benetkiewicz, Magdalena; Gramont, Aimery de; Bonnetain, Franck; Lacau St Guily, Jean

    2015-01-01

    Induction TPF regimen is a standard treatment option for squamous cell carcinoma (SCC) of the oropharynx. The efficacy and safety of adding cetuximab to induction TPF (ETPF) therapy was evaluated. Patients with nonmetastatic resectable stage III/IV SCC of the oropharynx were treated with weekly cetuximab followed the same day by docetaxel and cisplatin and by a continuous infusion of 5-fluorouracil on days 1-5 (every 3 weeks, 3 cycles). The primary endpoint was clinical and radiological complete response (crCR) of primary tumor at 3 months. Secondary endpoints were crCR rates, overall response, pathological CR, progression-free survival, overall survival, and safety. Forty-two patients were enrolled, and 41 received ETPF. The all nine planned cetuximab doses and the full three doses of planned chemotherapy were completed in 31 (76%) and 36 (88%) patients, respectively. Twelve (29%) patients required dose reduction. The crCR of primary tumor at the completion of therapy was observed in nine (22%) patients. ETPF was associated with a tumor objective response rate (ORR) of 58%. The most frequent grade 3–4 toxicities were as follows: nonfebrile neutropenia (39%), febrile neutropenia (19%), diarrhea (10%), and stomatitis (12%). Eighteen (44%) patients experienced acne-like skin reactions of any grade. One toxic death occurred secondary to chemotherapy-induced colitis with colonic perforation. This phase II study reports an interesting response rate for ETPF in patients with moderately advanced SCC of the oropharynx. The schedule of ETPF evaluated in this study cannot be recommended at this dosage

  8. Ellbogen- und Handgelenksendoprothetik beim Rheumatiker - Richtlinien und Rehabilitation

    Directory of Open Access Journals (Sweden)

    Chochole M

    2008-01-01

    Full Text Available Die Endoprothetik an Ellbogen und Handgelenk ist seit etwa drei Jahrzehnten etabliert. An beiden Gelenken haben sich einzelne Implantate oder Designs durchgesetzt. Operationstechniken und Nachuntersuchungsergebnisse sind publiziert. Wenig ist jedoch zum Thema Nachbehandlung und Nachsorge veröffentlicht. Diese Arbeit beschäftigt sich detailliert mit der ärztlichen und therapeutischen Betreuung nach Implantation einer Ellbogen- oder Handgelenksendoprothese beim Patienten mit rheumatischer Arthritis unter Aufgliederung in Krankenhausaufenthalt, ambulanter Nachsorge sowie stationärer Rehabilitation. Dabei werden Zeitrahmen, Therapieziele und Behandlungen gesondert angeführt.

  9. Altautoverwertung zwischen Staat und Markt: Bedingungen und Potentiale zur Modernisierung von Lagerhaltung und Marketing gebrauchter Autoteile

    OpenAIRE

    Lucas, Rainer

    2000-01-01

    Das Arbeitspapier diskutiert vor dem Hintergrund veränderter gesetzlicher Rahmen-und Wettbewerbsbedingungen in der Autoverwertung Ziele und Maßnahmen zurStärkung kleiner und mittelständischer Verwertungsbetriebe. Der Bereich GebrauchteAutoteile wird im Rahmen eines regionalen Fallbeispiels einer tiefergehenden Analyseunterzogen. Hieraus werden Vorschläge zur regionalen Netzwerkbildung innerhalb derBranche und neue Dienstleistungsperspektiven abgeleitet. Ein wesentliches Koope-rationsfeld ist ...

  10. Untersuchungen zur Farbreaktion von Amilorid, Chlorhexidin und Proguanil mit Hypobromit

    OpenAIRE

    Huth, Silke

    2004-01-01

    Bei der Reaktion von Amiloridhydrochlorid (1· HCl) mit Brom in alkalischer Lösung wird ein gelbbraunes Dehydrierungsprodukt erhalten, daß als 3-(3-Amino-1,2,4-oxadiazol-5-yl)-5-chlor-2,6-pyrazindiamin (6) identifiziert werden konnte. Durch Vergleich von Massen- und NMR-Spektren der Verbindung 6 mit Spektren von 1· HCl und Referenzsubstanzen I-III konnte auf die verbindung 6 geschlossen werden. Die Struktur wurde durch eine Röntgenstrukturanalyse abgesichert. Erhitzen von Amiloridhydrochlorid ...

  11. Rosetta und Yella

    Directory of Open Access Journals (Sweden)

    Urs Urban

    2009-11-01

    Full Text Available L’apparition de l’homo oeconomicus marque la fin des grands récits et par là de l’ensemble social que ceux-ci avaient légitimé. En même temps cependant il entre dans les récits littéraires – et filmiques, par exemple dans Rosetta (1999 des frères Dardenne et Yella (2007 de Christian Petzold. L’article se propose de montrer comment ces derniers réussissent à mettre en scène les apories existentielles d’un sujet produit par le dispositif économique en appliquant des procédés narratifs permettant de problématiser la narration elle-même.Mit dem Auftauchen des homo oeconomicus scheint das Ende der großen Erzählungen und des von diesen legitimierten sozialen Zusammenhangs besiegelt. Genau in diesem Moment indes beginnen sich die kleinen, die literarischen und filmischen Erzählformen für den ökonomischen Menschen zu interessieren. In dem Artikel geht es darum zu zeigen, wie die Brüder Dardenne und Christian Petzold die Aporien eines vom ökonomischen Dispositiv produzierten Subjekts in ihren Filmen Rosetta (1999 und Yella (2007 erzählerisch umsetzen und dabei genau diese erzählerische Umsetzbarkeit in Frage stellen.

  12. Supraleitung Grundlagen und Anwendungen

    CERN Document Server

    Buckel, Werner

    2013-01-01

    Grundlegende Konzepte und Eigenschaften von Supraleitern, die Herstellung und Entwicklung von neuen supraleitenden Materialien sowie moderne Anwendungsbereiche sind die Schwerpunktthemen des Buches. Das größte Potential zur Nutzung der Supraleitung liegt in der Energietechnik. Fast unbemerkt trägt die Einführung von Kabeln, Magneten, Transformatoren oder Lagern aus supraleitenden Materialien bei zur Effizienzsteigerung bei der Stromübertragung oder in Motoren. Durch seiner klare Sprache und zahlreiche erläuternde Abbildungen eignet sich der Band hervorragend als einführendes Lehrbuch. Der Schwierigkeitsgrad wird von Kapitel zu Kapitel gesteigert. So können auch Einsteiger ohne einschlägige Vorkenntnisse dem Stoff folgen. Dank der über 350 Literaturhinweise bekommt der Leser außerdem einen Überblick über die wichtigsten Publikationen zum Thema. Ein unverzichtbares Lehrbuch also für Physik-Studenten und Studierende der Ingenieurwissenschaften. Fachleuten in Forschung und Praxis leistet das Buch au...

  13. Der Nahostkonflikt und die Medien

    Directory of Open Access Journals (Sweden)

    Carola Richter

    2014-06-01

    Full Text Available Diese Einführung in eine Themenausgabe zu den vielfältigen Rollen der Medien im Nahostkonflikt skizziert die Probleme, die sich für Medien und Journalisten als Akteure im Konflikt, Adressaten der Konfliktparteien und Anlass für Konflikt durch ihre Berichterstattung ergeben. Das Konfliktgebiet Israel und Palästina ist sowohl für Forschung über Auslandsbericht-erstattung, über transnationale Agenda Building- und Public Diplomacy-Prozesse als auch über mediensystemische Entwicklungen in Besatzer- und Besatzungsgebieten interessant. Der Artikel gibt einen Überblick über das Feld und führt dabei in die in der Themenausgabe präsentierten empirischen Studien zum Nahostkonflikt und den Medien ein.

  14. Die biene und ihre produkte in der kunst und im alltagsleben (Fruhchristliche und byzantinische Zeit

    Directory of Open Access Journals (Sweden)

    Liveri Angeliki

    2010-01-01

    Full Text Available Die vorliegende Arbeit ist in zwei Teile geteilt: den kunst- und kulturhistorischen Teil. Im ersten Teil werden Darstellungen uber Bienen Bienenzucht, Honig und Wachs seit der fruhchristlichen bis zur spatbyzantinischen Zeit vorgefuhrt. Daher ist es als Beitrag in der "Ikonographie" der Biene wahrend dieser Zeit zu verstehen. Im kulturhistorischen Teil werden Informationen uber die Bienenzucht, den Handel mit Honig und Wachs sowie ihre vielfaltige Anwendung von der byzantinischen Gesellschaft an Hand der primaren Quellen, des Standes der Forschung und der archaologischen Funden erwahnt. Damit ist erwunscht ein moglichst gutes Bild der byzantinischen Bienenzucht wieder zu geben und die Nutzung der Bienenprodukte in Byzanz anschaulich zu machen.

  15. Digitalisierung und Selbstbestimmung

    Directory of Open Access Journals (Sweden)

    Eisenberger, Iris

    2017-12-01

    Full Text Available Kurztext: Der Beitrag beleuchtet das Verhältnis von Digitalisierung und Recht. Am Beispiel der Blockchain-Technologie wird aufgezeigt, wie neue Formen und Räume der Selbstbestimmung geschaffen werden können. In distribuierten Systemen ist die Tendenz erkennbar, dass sich die rechtliche hin zu einer technologischen Steuerung verlagert. Wenn Funktionen, die für gewöhnlich der demokratisch legitimierte Gesetzgeber wahrnimmt, auf andere Systeme übergehen, führt dies zu Herausforderungen für rechtsstaatliche Demokratien. Fundamentale Fragen von Kontrolle und Machtbeschränkung iZm Digitalisierung stehen im Fokus. Der Beitrag plädiert schließlich für „legal foresight“-Forschung im Bereich neuer Technologien.

  16. The new concept of hyphenated analytical system: Simultaneous determination of inorganic arsenic(III), arsenic(V), selenium(IV) and selenium(VI) by high performance liquid chromatography-hydride generation-(fast sequential) atomic absorption spectrometry during single analysis

    International Nuclear Information System (INIS)

    Niedzielski, P.

    2005-01-01

    The paper presents a new conception of determination of inorganic speciation forms of arsenic: As(III) and As(V) as well selenium Se(IV) and Se(VI) by means of the high performance liquid chromatography hyphenated with a detection by the atomic absorption spectrometry with hydride generation (HPLC-HG-AAS). The application of optimization procedure conditions of chromatographic separation of arsenic and selenium speciation forms (using anion-exchange Supelco LC-SAX1 column and phosphate buffer at pH 5.40 as a mobile phase) as well as the use of the atomic absorption spectrometry as a detector, which enables work in fast sequential mode, allowed to develop original detection methodology of simultaneous determination of arsenic As(III), As(V) and selenium Se(IV) and Se(VI) speciation forms within a 220 s single analysis. The obtained detection limits were 7.8 ng mL -1 for As(III); 12.0 ng mL -1 for As(V); 2.4 ng mL -1 for Se(IV) and 18.6 ng mL -1 for Se(VI) and precision 10.5%, 12.1%, 14.2% and 17.3%, respectively, for 100 ng mL -1 . The described method was used for ground water analysis

  17. "Deutsche Kultur" und Werbung

    OpenAIRE

    Schug, Alexander

    2010-01-01

    Die Arbeit präsentiert die Geschichte der modernen Wirtschaftswerbung in der ersten Hälfte des 20. Jahrhunderts und zeigt, dass Werbung trotz kultureller Barrieren die Alltagswelten der Deutschen kolonialisierte und Einfluss auf die „deutsche Kultur“ nahm. Die Arbeit zeigt, dass das Konstrukt der „deutschen Kultur“ nicht ausschließlich durch die bürgerliche Hochkultur definiert wurde, sondern zunehmend auch durch Einflüsse der Konsumkultur bestimmt war. Die Bilderwelten der Werbung prägten na...

  18. Work-Life-Balance und Frauenbiographien

    OpenAIRE

    Macha, Hildegard

    2006-01-01

    Work-Life-Balance und Frauenbiographien. - In: Bildungs- und Karrierewege von Frauen / Anne Schlüter (Hrsg.). - Opladen : Budrich, 2006. - S. 17-32. - (Reihe: Frauen- und Geschlechterforschung in der Erziehungswissenschaft ; 2)

  19. Nutzerorientiertes Management von materiellen und immateriellen Informationsobjekten

    OpenAIRE

    Hübsch, Chris

    2001-01-01

    Schaffung einer stabilen, erweiterbaren und skalierbaren Infrastruktur für die Bereitstellung von Diensten im Umfeld von Bibliotheken und ähnlichen wissensanbietenden Einrichtungen unter Verwendung von XML-RPC und Python.

  20. Docetaxel, cisplatin and 5-fluorouracil induction chemotherapy followed by chemoradiotherapy or chemoradiotherapy alone in stage III-IV unresectable head and neck cancer. Results of a randomized phase II study

    International Nuclear Information System (INIS)

    Takacsi-Nagy, Zoltan; Polgar, Csaba; Major, Tibor; Fodor, Janos; Hitre, Erika; Remenar, Eva; Kasler, Miklos; Oberna, Ferenc; Goedeny, Maria

    2015-01-01

    Concurrent chemoradiotherapy (CRT) is the standard treatment for advanced head and neck squamous cell carcinoma. In this phase II randomized study, the efficacy and toxicity of docetaxel, cisplatin and 5-fluorouracil induction chemotherapy (ICT) followed by concurrent CRT was compared with those after standard CRT alone in patients with locally advanced, unresectable head and neck cancer. Between January 2007 and June 2009, 66 patients with advanced (stage III or IV) unresectable squamous cell carcinoma of the head and neck (oral cavity, oropharynx, hypopharynx, and larynx) were randomly assigned to two groups: one receiving two cycles of docetaxel, cisplatin, and 5-fluorouracil ICT followed by CRT with three cycles of cisplatin and one treated by CRT alone. Response rate, local tumor control (LTC), locoregional tumor control (LRTC), overall survival (OS), progression-free survival (PFS), and toxicity results were assessed. Three patients from the ICT + CRT group did not appear at the first treatment, so a total of 63 patients were evaluated in the study (30 ICT + CRT group and 33 CRT group). Three patients died of febrile neutropenia after ICT. The median follow-up time for surviving patients was 63 months (range 53-82 months). The rate of radiologic complete response was 63 % following ICT + CRT, whereas 70 % after CRT alone. There were no significant differences in the 3-year rates of LTC (56 vs. 57 %), LRTC (42 vs. 50 %), OS (43 vs. 55 %), and PFS (41 vs. 50 %) in the ICT + CRT group and in the CRT group, respectively. The rate of grade 3-4 neutropenia was significantly higher in the ICT + CRT group than in the CRT group (37 and 12 %; p = 0.024). Late toxicity (grade 2 or 3 xerostomia) developed in 59 and 42 % in the ICT + CRT and CRT groups, respectively. The addition of ICT to CRT did not show any advantage in our phase II trial, while the incidence of adverse events increased. The three deaths as a consequence of ICT call attention to the importance of

  1. Phase II study of tolerance and efficacy of hyperfractionated radiotherapy and 5-fluorouracil, cisplatin, and paclitaxel (Taxol) in stage III and IV inoperable and/or unresectable head-and-neck squamous cell carcinoma: A-2 protocol

    International Nuclear Information System (INIS)

    Abitbol, Andre; Abdel-Wahab, May; Lewin, Alan; Troner, Michael; Rodrigues, Maria-Amelia; Hamilton-Nelson, Kara L.; Markoe, Arnold

    2002-01-01

    Purpose: To determine the toxicity and efficacy of concurrent 5-fluorouracil (5-FU), cisplatin, and paclitaxel (Taxol) and hyperfractionated radiotherapy in locally advanced squamous cell carcinoma of the head and neck. Methods and Materials: Twenty-seven patients were entered into this Phase II trial. Eligible patients had Stage III or IV head-and-neck squamous cell carcinoma arising from the oral cavity, hypopharynx, oropharynx, nasopharynx, or larynx. The plan of treatment consisted of hyperfractionated radiotherapy (74.4 Gy at twice daily fractions of 1.2 Gy). Chemotherapy was given on Weeks 1, 5, and 8 as follows: 5-FU at 750 mg/m 2 as a constant infusion for 24 h for 3 days; cisplatin at 50 mg/m 2 in 250-500 mL D5 0.5 NS or NS infusion during 2-4 h, and paclitaxel at 70 mg/m 2 infused in 500 mL NS during 3 h. Results: The overall survival rate of the entire group was 81.5%, 66.7%, and 63% at 1, 2, and 3 years, respectively. The median follow-up was 40.2 months (range 30-62). Of the 27 patients, 19 (70%) had a complete response and an overall survival rate of 100% at 1 year and 94% at 2 and 3 years. The disease-free survival rate of the latter group was 95% at 1 year and 84% at 2 and 3 years. Of the 27 patients, 18 (67%) maintained the complete response until the last follow-up visit or death. Percutaneous endoscopic gastrostomy dependency occurred for a median of 7.1 months. Grade 3 and 4 mucositis occurred in 20 and 3 patients, respectively. Six patients were hospitalized for leukopenic fever. Late toxicities included L'Hermitte syndrome (n=3), osteoradionecrosis (n=1), hypothyroidism (n=4), paresthesias (n=1), aspiration pneumonia (n=3), and esophageal strictures (8 patients underwent dilation). Conclusion: Combining hyperfractionated radiotherapy concurrently with 5-FU, cisplatin, and paclitaxel results in acceptable efficacy and toxicity. However, although a locoregional control benefit is suggested by the preliminary results of this trial, it needs to be

  2. Comparison between two-dimensional and three-dimensional quantitative coronary angiography for the prediction of functional severity in true bifurcation lesions: Insights from the randomized DK-CRUSH II, III, and IV trials.

    Science.gov (United States)

    Zhang, Yao-Jun; Zhu, Hao; Shi, Shun-Yi; Muramatsu, Takashi; Pan, Dao-Rong; Ye, Fei; Zhang, Jun-Jie; Tian, Nai-Liang; Bourantas, Christos V; Chen, Shao-Liang

    2016-03-01

    This study investigated the diagnostic accuracy of three-dimensional quantitative coronary angiography (3D-QCA) compared with conventional 2D-QCA for predicting functional severity assessed by fractional flow reserve (FFR) for true bifurcation lesions. Based on pooled data from the randomized DK-CRUSH II, III, and IV trials, we evaluated the patients with true bifurcation lesions who underwent coronary angiography together with functional evaluations using FFR in both the main vessel and the side branch. Off-line 2D- and 3D-QCA analyses were conducted using dedicated bifurcation QCA analysis software. Measurements of minimum lumen diameter (MLD), percentage diameter stenosis (% DS), and minimum lumen area (MLA) were compared between 2D- and 3D-QCA, and we evaluated their predictive values of functionally significant FFR. Ninety patients were eligible for enrollment in the present study. In the main vessel, MLA measured by 3D-QCA was the most accurate predictor of FFR <0.75 (C statistic 0.85, P < 0.001), while MLD measured by 2D-QCA was a similarly accurate predictor (C statistic 0.85, P < 0.001). In the side branch, the best metrics for predicting FFR <0.75 were % DS measured by 2D-QCA with a C statistic value of 0.91 (P < 0.001) and MLA measured by 3D-QCA with a C statistic value of 0.81 (P < 0.001). However, both 2D- and 3D-QCA metrics exhibited low accuracies for predicting FFR <0.75 in intermediate bifurcation lesions. 3D-QCA analysis for true bifurcation lesions did not improve the predictive accuracy of functionally significant FFR compared with 2D-QCA analysis. In lesions with intermediate stenosis, the diagnostic performance of both 2D- and 3D-QCA-derived measurements in differentiating functional severity is limited. © 2016 Wiley Periodicals, Inc.

  3. CsSc{sub 3}F{sub 6}[SeO{sub 3}]{sub 2}. A new rare-earth metal(III) fluoride oxoselenate(IV) with sections of the ReO{sub 3}-type structure

    Energy Technology Data Exchange (ETDEWEB)

    Greiner, Stefan; Schleid, Thomas [Institut fuer Anorganische Chemie, Universitaet Stuttgart (Germany)

    2017-09-04

    A new representative of rare-earth metal(III) fluoride oxoselenates(IV) derivatized with alkali metals could be synthesized via solid-state reactions. Colorless single crystals of CsSc{sub 3}F{sub 6}[SeO{sub 3}]{sub 2} were obtained through the reaction of Sc{sub 2}O{sub 3}, ScF{sub 3}, and SeO{sub 2} (molar ratio 1:1:3) with CsBr as reactant and fluxing agent. For this purpose, corundum crucibles embedded as liners into evacuated silica ampoules were applied as containers for these reactions at 700 C for seven days. The new quintenary compound crystallizes in the trigonal space group P3m1 with a = 565.34(4) and c = 1069.87(8) pm (c/a = 1.892) for Z = 1. The crystal structure of CsSc{sub 3}F{sub 6}[SeO{sub 3}]{sub 2} contains two crystallographically different Sc{sup 3+} cations. Each (Sc1){sup 3+} is surrounded by six fluoride anions as octahedron, while the octahedra about (Sc2){sup 3+} are formed by three fluoride anions and three oxygen atoms from three terminal [SeO{sub 3}]{sup 2-} anions. The [(Sc1)F{sub 6}]{sup 3-} octahedra link via common F{sup -} vertices to six fac-[(Sc2)F{sub 3}O{sub 3}]{sup 6-} octahedra forming {sup 2}{sub ∞}{[Sc_3F_6O_6]"9"-} layers parallel to (001). These layers are separated by oxygen-coordinated Cs{sup +} cations (C.N. = 12), arranging for the charge compensation, while Se{sup 4+} cations within the layers surrounded by three oxygen atoms as ψ{sup 1}-tetrahedral [SeO{sub 3}]{sup 2-} units complete the structure. EDX measurements confirmed the composition of the title compound and single-crystal Raman studies showed the typical vibrational modes of isolated [SeO{sub 3}]{sup 2-} anions with ideal C{sub 3v} symmetry. (copyright 2017 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  4. Das IHS und die Rolle der Forschungsinstitute

    OpenAIRE

    Keuschnigg, Christian

    2014-01-01

    Das Institut für Höhere Studien und wissenschaftliche Forschung (IHS) ist ein unabhängiges Forschungsinstitut und leistet Forschung und Ausbildung auf Spitzenniveau für Politik, Wirtschaft und Gesellschaft. Im Wettbewerb zwischen Universitäten und angewandten Forschungsinstituten ist das IHS einzigartig, weil es unter einem Dach Grundlagenforschung und forschungsnahe Lehre mit angewandter Forschung für die wissenschaftliche Politikberatung verbindet. Mit den drei Disziplinen Ökonomie, Soziolo...

  5. Determination of uranium (IV) by flow voltammetry

    International Nuclear Information System (INIS)

    Ding Anqing

    1987-01-01

    According to the quantitative reaction of U(IV) and Fe(III) in H 2 SO 4 as well as the relation between current and concentration of substance detected, U(IV) has been determined indirectly by measurement of the electrolysis current of residual Fe(III). The columniform electrode used is made of glass carbon particles. At the range of U(IV) from a few micrograms to 40 μg, the linear relation is excellent. The relative standard deviation is within ±4%. The interference of Fe(II), Ti(IV) and U(VI) is negligible but of Ti(III) is serious. This method has been successfully applied in the determination of actual samples (both out line and on line). Main advantages of this procedure are rapid, simple, small amount of sample (only at microgram level) and easy to realize automation, able to use for on line or process analysis

  6. Materials and energy balance of a university - development of an environmental management concept for universities based on the example of Osnabrueck university. Final report; Stoff- und Energieflussanalyse einer Universitaet - Erstellung eines Umweltmanagementkonzepts fuer Hochschulen am Beispiel der Universitaet Osnabrueck. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Matthies, M.; Viebahn, P.

    1999-04-01

    A material and energy analysis of Osnabrueck university was established with the goal of drawing up an environmental management concept for universities in general. The eco-balance was established in accordance with environmental specifications for energy, traffic, water, waste water, materials, waste and terrain. An environmental protection programme was developed on this basis, as well as an environmental information system for the university. The final stage comprised networking activities (eco-campus.net). A bibliography is presented. [German] In Abschnitt I wird zunaechst eine Zusammenfassung der Projektergebnisse gegeben (Kapitel 2). Die ausfuehrliche Darstellung des Projektes beginnt in Kapitel 3 mit einem Ueberblick ueber das Projekt und seine Entstehung. In Kapitel 4 wird ein Ueberblick ueber die Universitaet Osnabrueck gegeben; in Kapitel 5 wird die Notwendigkeit eines UMS' fuer Hochschulen begruendet und als eines der moeglichen Instrumente die EG-Oeko-Audit-Verordnung beschrieben. In Abschnitt II beginnt die Beschreibung der einzelnen Bausteine des Osnabruecker Umweltmanagement-Modells. In Kapitel 6 wird dargestellt, wie die umweltrelevanten Taetigkeiten in den Organisationsstrukturen der Universitaet verankert werden sollten (Baustein UM 1). In den Kapiteln 7 und 8 werden die Umweltleitlinien der Universitaet Osnabrueck (Baustein UM 2) sowie die externen Umweltvorschriften (Baustein UM 3) wiedergegeben. In Abschnitt III erfolgt die Erstellung der Oekobilanz der Universitaet Osnabrueck (Baustein UM 4), der Schwerpunkt des Projektes. In Kapitel 9 wird zunaechst eine Einfuehrung in die Oekobilanzierung gegeben. In Kapitel 10 folgt die Zieldefinition und die Beschreibung der Sachbilanz. Hier wird auch auf die verwendete Software UMBERTO naeher eingegangen. In den Kapiteln 11-16 werden die Teilbilanzen Energie, Verkehr, Wasser und Abwasser, Materialien, Abfaelle und Flaechen beschrieben. In Kapitel 17 erfolgt schliesslich die Zusammenfuehrung der

  7. Diagrammatik und Wissensorganisation

    Directory of Open Access Journals (Sweden)

    Sascha Freyberg

    2012-11-01

    Full Text Available EinleitungDie Formen des „Sichtbarmachens“ in der Wissenschaft reichen von „Abbildungen“ über „Modelle“ bis hin zu „Simulationen“. Sie können u.a. gezeichnet, fotografiert, geometrisch konstruiert oder durch Sensorik vermittelt, digital prozessiert werden. Ihre Funktionen erstrecken sich von der Orientierung bis hin zur (hypothetischen Voraussage und somit auch vom Überblick bis zur Evidenzsuggestion. Generell handelt es sich um vereinfachte (und vereinfachende Darstellungen von (teilweise sehr komplexen Sachverhalten, zu deren Verständnis sie beitragen sollen; daher können sie bei Lernprozessen, d.h. in der Vermittlung und auch bei der Organisation von Wissen eine wichtige Rolle spielen. Diese kommt ihnen nun nicht nur zu, weil sie – wie in den mittelalterlichen Mnemotechniken – als Gedächtnisstützen für bekannte Sachverhalte dienen. Sondern resultiert auch aus ihrem Potenzial für die Entdeckung von neuen Zusammenhängen. Der folgende Artikel diskutiert die Darstellungsform des Diagramms. Es wird hier mit dem Gedanken gespielt, dass die in der universalen Zeichentheorie von C.S. Peirce entwickelte Diagrammatik wichtige Impulse für eine Untersuchung des Zusammenhangs von Wissen und Bildlichkeit geben kann.

  8. Arbeitsgestaltung und Mitarbeiterqualifizierung

    Science.gov (United States)

    Weiss-Oberdorfer, Werner; Hörner, Barbara; Holm, Ruth; Pirner, Evelin

    Die Wertkette gliedert ein Unternehmen in strategisch relevante Tätigkeiten, um dadurch Kostenverhalten sowie vorhandene und potenzielle Differenzierungsquellen zu verstehen. Wenn ein Unternehmen diese strategisch wichtigen Aktivitäten billiger oder besser als seine Konkurrenten erledigt, verschafft es sich einen Wettbewerbsvorteil." Michael Porter, 1985

  9. Substanzbegriff und systematik

    NARCIS (Netherlands)

    Lütjeharms, W.J.

    1934-01-01

    Bei der Einteilung der Organismen, welche in dieser Arbeit mir von botanischem Gesichtspunkt betrachtet wird, ist die Frage nach „wesentlichen” Merkmalen oder Einteilungsgründen von grosser Wichtigkeit. Es ist die Frage nach der Substanz (Essenz) und den akzidentellen Merkmalen. Der Substanzbegriff

  10. Stenting und technische Stentumgebung

    Science.gov (United States)

    Hoffstetter, Marc; Pfeifer, Stefan; Schratzenstaller, Thomas; Wintermantel, Erich

    In hoch entwickelten Industrieländern stehen laut Weltgesundheitsorganisation (WHO) Herz-Kreislauf-Erkrankungen und speziell die Koronare Herzkrankheit (KHK) an erster Stelle der Todesursachen. In Deutschland betrug die Zahl der erfassten, an KHK erkrankten Personen ohne Berücksichtigung der Dunkelziffer allein im Jahre 2001 über 473.000. Die KHK war im Jahre 2003 mit 92.673 erfassten Todesfällen immer noch die häufigste Todesursache, obgleich in Deutschland die Häufigkeit der Koronarinterventionen zur Behandlung der KHK zwischen 1984 und 2003 um fast das 80fache von 2.809 auf 221.867 Eingriffe pro Jahr gestiegen ist [1]. Neben der hohen Zahl an Todesfällen haben die betroffenen Personen durch chronische Schmerzen und eingeschränkte körperliche Leistungsfähigkeit zusätzlich eine starke Beeinträchtigung der Lebensqualität [2].In Folge dessen wird die erkrankte Person häufig zum Pflegefall was neben den gesundheitlichen Aspekten auch eine sozioökonomische Komponente in Form der fehlenden Arbeitskraft und den auftretenden Pflegekosten nach sich zieht. Die Kosten für die Behandlung der KHK in Deutschland beliefen sich im Jahre 2002 laut Statistischem Bundesamt auf rund 6,9 Mrd. €. Verglichen mit ähnlichen Zahlen der USA dürfte sich der entstandene Schaden für die deutsche Volkswirtschaft im zwei- bis dreistelligen Milliardenbereich bewegen [3].

  11. Herausforderungen kleiner und mittlerer Unternehmen

    Science.gov (United States)

    Bergmann, Lars; Crespo, Isabel

    Vielfältige externe Herausforderungen, hervorgerufen durch die Dynamik, mit der sich die wirtschaftliche, technologische, soziokulturelle sowie politische Umwelt wandelt, muss jedes Unternehmen im Laufe der Zeit bestehen (Zäpfel 2000). Diese Herausforderungen werden heute insbesondere durch eine Globalisierung der Wettbewerbssowie Nachfragestrukturen verstärkt. Immer schnellere Prozessund Produktinnovationen, kürzere Produktlebenszyklen und Entwicklungszeiten, eine rasant steigende Variantenvielfalt, Nachfrageschwankungen sowie rasante Entwicklungen der Informations- und Kommunikationstechnologien sind einige der sich schnell verändernden Rahmenbedingungen. Zudem müssen sich Unternehmen an neue Gesetze und rechtliche Rahmenbedingungen anpassen. Im Bereich der Roh- und Einsatzstoffe sind Veränderungen insbesondere durch sich verknappende Rohstoffe und Primärenergieträger und in Folge dessen durch drastische Preissteigerungen für Materialien, Hilfsstoffe, Werkzeuge etc. geprägt.

  12. 1L Mark-IV Target Design Review

    Energy Technology Data Exchange (ETDEWEB)

    Koehler, Paul E. [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2017-11-16

    This presentation includes General Design Considerations; Current (Mark-III) Lower Tier; Mark-III Upper Tier; Performance Metrics; General Improvements for Material Science; General Improvements for Nuclear Science; Improving FOM for Nuclear Science; General Design Considerations Summary; Design Optimization Studies; Expected Mark-IV Performance: Material Science; Expected Mark-IV Performance: Nuclear Science (Disk); Mark IV Enables Much Wider Range of Nuclear-Science FOM Gains than Mark III; Mark-IV Performance Summary; Rod or Disk? Center or Real FOV?; and Project Cost and Schedule.

  13. Sorption und Verbreitung per- und polyfluorierter Chemikalien (PFAS) in Wasser und Boden

    OpenAIRE

    Gellrich, Vanessa

    2014-01-01

    PFAS (= Perfluoroalkyl and Polyfluoroalkyl Substances) sind persistente organische Spurenstoffe, die weltweit in verschiedenen Umweltkompartimenten nachgewiesen werden konnten. Im Rahmen dieser Dissertation sollte die Frage geklärt werden, wie die physikalisch-chemischen Eigenschaften der PFAS - besonders ihre Sorption am Boden - ihr Verhalten und ihre Verbreitung in der Umwelt beeinflussen. Dazu wurde zunächst eine Messmethode entwickelt, optimiert und validiert, mit der 17 per- und polyf...

  14. Plazentaanatomie und -physiologie mit uteroplazentarem Kreislauf

    NARCIS (Netherlands)

    Engel, N.; Schreiber, J. U.; Kranke, Peter

    2017-01-01

    Die Plazenta besteht neben der Nabelschnur aus parenchymatösem Gewebe, der sog. Eihaut (Amnion) und der Zottenhaut (Chorion). Sie fungiert als Schnittstelle zwischen Mutter und Fetus und ermöglicht den physiologischen Transfer von Gasen, Nährstoffen und Metaboliten. Die Funktion der Plazenta ist als

  15. Hegel und Gorgias

    DEFF Research Database (Denmark)

    Huggler, Jørgen

    Hegel und Gorgias /Jørgen Huggler (University of Aarhus, Denmark) (huggler(at)dpu.dk) Hegels Verständnis des Sophist Gorgias von Leontinoi in den Vorlesungen über die Geschichte der Philosophie gründet auf seine eigene Interpretation der Eleaten, insbesondere Zenon. Aufgrund eigener philosophischer...... „Gründen“, einen echten Beitrag zu dieser Entwicklung des griechischen Denkens geliefert. Vor allen scheint Gorgias die dialektischen Bemühungen der Eleaten fortgesetzt zu haben. Hegels Auslegung des Gorgias kann den lauwarmen Empfang der Sophisten in den deutschen Beiträgen zur Geschichte der Philosophie...... des späten 18. Jahrhunderts (Meiners, Tiedemann, Stäudlin, Buhle und Tennemann) gegenübergestellt werden. In der Tat ist Hegels philosophisches Verständnis ausreichend, um positive Kommentare zu allen Teilen der Diskussion in Gorgias Argument „Über das Nicht-Seiende, oder Über der Natur“ zu geben...

  16. Rudolf Streinz. Meinungs- und Informationsfreiheit zwischen Ost und West / Henn-Jüri Uibopuu

    Index Scriptorium Estoniae

    Uibopuu, Henn-Jüri, 1929-2012

    1983-01-01

    Tutvustus: Streinz, Rudolf. Meinungs- und Informationsfreiheit zwischen Ost und West : Möglichkeiten und Grenzen intersystemarer völkerrechtlicher Garantien in einem systemkonstituierenden Bereich. Ebelsbach : Rolf Gremer, 1981

  17. Zur historischen Aufarbeitung und medialen Vermittlung der Shoah in Italien und Deutschland

    Directory of Open Access Journals (Sweden)

    Peter Kuon

    2016-03-01

    Full Text Available Claudia Müller, Patrick Ostermann und Karl-Siegbert Rehberg, Hrsg., Die Shoah in Geschichte und Erinnerung: Perspektiven medialer Vermittlung in Italien und Deutschland (Bielefeld: transcript, 2015.

  18. Ethik und Sicherheitstechnik. Eine Handreichung

    NARCIS (Netherlands)

    Ammicht-Quinn, Regina; Nagenborg, Michael Herbert; Rampp, Benjamin; Wolkenstein, Andreas F.X.; Ammicht-Quinn, Regina

    2013-01-01

    Mit dem Programm „Forschung für die zivile Sicherheit“ fördert die Bundesregierung im Rahmen der „Hightech-Strategie für Deutschland“ erstmals unmittelbar die Entwicklung von Techniken, die der Schaffung und Bewahrung von ziviler Sicherheit dienen. Bei der Erforschung und Entwicklung von

  19. The role of Ce(III) in BZ oscillating reactions

    Science.gov (United States)

    Nogueira, Paulo A.; Varela, Hamilton; Faria, Roberto B.

    2012-03-01

    Herein we present results on the oscillatory dynamics in the bromate-oxalic acid-acetone-Ce(III)/Ce(IV) system in batch and also in a CSTR. We show that Ce(III) is the necessary reactant to allow the emergence of oscillations. In batch, oscillations occur with Ce(III) and also with Ce(IV), but no induction period is observed with Ce(III). In a CSTR, no oscillations were found using a freshly prepared Ce(IV), but only when the cerium-containing solution was aged, allowing partial conversion of Ce(IV) to Ce(III) by reaction with acetone.

  20. Bildanalyse in Medizin und Biologie

    Science.gov (United States)

    Athelogou, Maria; Schönmeyer, Ralf; Schmidt, Günther; Schäpe, Arno; Baatz, Martin; Binnig, Gerd

    Heutzutage sind bildgebende Verfahren aus medizinischen Untersuchungen nicht mehr wegzudenken. Diverse Methoden - basierend auf dem Einsatz von Ultraschallwellen, Röntgenstrahlung, Magnetfeldern oder Lichtstrahlen - werden dabei spezifisch eingesetzt und liefern umfangreiches Datenmaterial über den Körper und sein Inneres. Anhand von Mikroskopieaufnahmen aus Biopsien können darüber hinaus Daten über die morphologische Eigenschaften von Körpergeweben gewonnen werden. Aus der Analyse all dieser unterschiedlichen Arten von Informationen und unter Konsultation weiterer klinischer Untersuchungen aus diversen medizinischen Disziplinen kann unter Berücksichtigung von Anamnesedaten ein "Gesamtbild“ des Gesundheitszustands eines Patienten erstellt werden. Durch die Flut der erzeugten Bilddaten kommt der Bildverarbeitung im Allgemeinen und der Bildanalyse im Besonderen eine immer wichtigere Rolle zu. Gerade im Bereich der Diagnoseunterstützung, der Therapieplanung und der bildgeführten Chirurgie bilden sie Schlüsseltechnologien, die den Forschritt nicht nur auf diesen Gebieten maßgeblich vorantreiben.

  1. [Die baltischen Lande im Zeitalter der Reformation und Konfessionalisierung. Livland, Estland, Ösel, Ingermanland, Kurland und Letgallen. Stadt, Land und Konfession 1500-1721. 2. und 3. Teil] / Anti Selart

    Index Scriptorium Estoniae

    Selart, Anti, 1973-

    2012-01-01

    Arvustus: Die baltischen Lande im Zeitalter der Reformation und Konfessionalisierung. Livland, Estland, Ösel, Ingermanland, Kurland und Letgallen. Stadt, Land und Konfession 1500-1721. Hrsg. von Matthias Asche, Werner Buchholz, Anton Schindling. 2. und 3. Teil.

  2. Collagen type IV at the fetal-maternal interface

    OpenAIRE

    Oefner, C M; Sharkey, A; Gardner, L; Critchley, H; Oyen, M; Moffett, A

    2015-01-01

    Introduction Extracellular matrix proteins play a crucial role in influencing the invasion of trophoblast cells. However the role of collagens and collagen type IV (col-IV) in particular at the implantation site is not clear. Methods Immunohistochemistry was used to determine the distribution of collagen types I, III, IV and VI in endometrium and decidua during the menstrual cycle and the first trimester of pregnancy. Expression of col-IV alpha chains during the reproductive cycle ...

  3. Synthese und Charakterisierung wasserfreier Seltenerdmetall-Nitrate, -Acetate und -Oxyacetate

    OpenAIRE

    Heinrichs, Christina

    2013-01-01

    Durch thermische Entwässerung der Seltenerdmetall(SE)-Nitrat-Hydrate und der SE-Acetat-Hydrate im Argon-Strom/Vakuum konnten wasserfreie SE-Nitrate und SE-Nitrat-Monohydrate bzw. wasserfreie SE-Acetate erhalten werden. Es gelang zudem, SE-Oxyacetate durch thermische Zersetzung der SE-Acetate darzustellen. Des Weiteren wurde beim Erhitzen von Praseodym-Carbonat-Hydrat ein Pr-Carbonat-Hydroxid erhalten. Die Verbindungen wurden mittels Röntgenpulverdiffraktometrie und an ausgewählten Beispielen ...

  4. Radiation therapy in old patients. Side effects and results of radiation therapy in old patients; Strahlentherapie des alten Patienten. Vertraeglichkeit und Ergebnisse der Strahlentherapie aelterer Personen

    Energy Technology Data Exchange (ETDEWEB)

    Geinitz, H.; Zimmermann, F.B.; Molls, M. [Klinik und Poliklinik fuer Strahlentherapie und Radiologische Onkologie, Klinikum rechts der Isar, Technische Univ. Muenchen (Germany)

    1999-03-01

    leads to extensive atherosclerotic vessel damage should be kept in mind. Old patients should be monitored closely during therapy, since the loss of electrolytes or fluid is often not very well tolerated. Conclusion: The indication to radiation therapy of elderly cancer patients should take into account their performance status as well as the extent and the severity of comorbidity. Age per se is seldom a contraindication for radiation therapy. Regarding the available data in literature there is no indication for a dose reduction in radiation therapy only because of age, especially in the curative setting. (orig.) [Deutsch] Hintergrund: Die Anzahl alter Patienten in der Strahlentherapie steigt mit der zunehmenden Alterung der Bevoelkerung. Dennoch werden die damit verbundenen Fragen zur Vertraeglichkeit und Effektivitaet einer Strahlenbehandlung alter Menschen selten diskutiert. Material und Methode: Die Ergebnise einer Literaturrecherche zu epidemiologischen Daten, strahlenbiologischen Aspekten und Ergebnissen der Strahlentherapie alter Patienten werden dargestellt. Ergebnisse: Mit zunehmendem Alter nimmt die Krebsinzidenz zu. Sie liegt bei Maennern aelter als 85 Jahre bei ca. 3,5%. Bei einer durchschnittlichen Lebenserwartung von mehr als vier Jahren ist auch in dieser Altersgruppe der Einsatz einer kurativen Strahlentherapie sinnvoll. Ausserdem deuten verschiedene retrospektive Studien darauf hin, dass die Raten an lokaler Tumorkontrolle und krankheitsspezifischem Ueberleben nach Strahlentherapie mit denen juengerer Patienten vergleichbar sind. Eine Ausnahme bilden unter anderem aeltere Patienten mit Gliomen Grad III bis IV und mit Rektumkarzinom, die ein schlechteres Ueberleben aufweisen. Dieses ist eventuell auf eine weniger aggressive Kombinationstherapie (Tumorresektion) zurueckzufuehren. Obwohl strahlen- und molekularbiologische Daten auf einen Anstieg der Strahlenempfindlichkeit mit zunehmendem Alter hinweisen, wie zum Beispiel das Nachlassen der Kapazitaet

  5. EFFICACY AND SAFETY OF INHALED NITRIC OXIDE USE IN PATIENTS WITH PULMONARY HYPERTENSION AND CHRONIC HEART FAILURE III-IV FUNCTIONAL CLASS, SURVIVED LEFT VENTRICULAR MYOCARDIAL INFARCTION: RESULTS OF NON-RANDOMIZED COMAPARIVE STUDY

    Directory of Open Access Journals (Sweden)

    P. N. Pavlenko

    2011-01-01

    Full Text Available Aim – assessment of the influence of inhaled nitric oxide (NO on the course of pulmonary hypertension (PH in patients with chronic heartfailure (CHF III–IV functional class (FC, myocardial infarction (MI.Materials and methods. Results of comparative non-randomized study that included 45 patients (26 men and 19 women aged 51 to 98 years with PH III–IV functional class, left ventricular myocardial infarction. In the study, patients underwent physical examination and Doppler echocardiography, and assessed FC LH (carried out with six-minute walking test, to determine the degree of dyspnea by Borg.Results. Symptoms of CHF and PH regressed in both groups of patients against the background of the therapy. Conclusion. It is established that the use of inhaled NO is a safe therapy and helps to reduce mean pulmonary arterial pressure (PAPmean in patients with PH and CHF III–IV FC, myocardial infarction. The method of inhaled NO is simple and easy to use.

  6. EFFICACY AND SAFETY OF INHALED NITRIC OXIDE USE IN PATIENTS WITH PULMONARY HYPERTENSION AND CHRONIC HEART FAILURE III-IV FUNCTIONAL CLASS, SURVIVED LEFT VENTRICULAR MYOCARDIAL INFARCTION: RESULTS OF NON-RANDOMIZED COMAPARIVE STUDY

    Directory of Open Access Journals (Sweden)

    P. N. Pavlenko

    2014-07-01

    Full Text Available Aim – assessment of the influence of inhaled nitric oxide (NO on the course of pulmonary hypertension (PH in patients with chronic heartfailure (CHF III–IV functional class (FC, myocardial infarction (MI.Materials and methods. Results of comparative non-randomized study that included 45 patients (26 men and 19 women aged 51 to 98 years with PH III–IV functional class, left ventricular myocardial infarction. In the study, patients underwent physical examination and Doppler echocardiography, and assessed FC LH (carried out with six-minute walking test, to determine the degree of dyspnea by Borg.Results. Symptoms of CHF and PH regressed in both groups of patients against the background of the therapy. Conclusion. It is established that the use of inhaled NO is a safe therapy and helps to reduce mean pulmonary arterial pressure (PAPmean in patients with PH and CHF III–IV FC, myocardial infarction. The method of inhaled NO is simple and easy to use.

  7. Diet and Physical Activity Change or Usual Care in Improving Progression-Free Survival in Patients With Previously Treated Stage II, III, or IV Ovarian, Fallopian Tube, or Primary Peritoneal Cancer

    Science.gov (United States)

    2018-02-14

    Fallopian Tube Clear Cell Adenocarcinoma; Fallopian Tube Endometrioid Adenocarcinoma; Fallopian Tube Mucinous Adenocarcinoma; Fallopian Tube Serous Adenocarcinoma; Fallopian Tube Transitional Cell Carcinoma; Malignant Ovarian Brenner Tumor; Ovarian Clear Cell Adenocarcinoma; Ovarian Endometrioid Adenocarcinoma; Ovarian Mucinous Adenocarcinoma; Ovarian Seromucinous Carcinoma; Ovarian Serous Adenocarcinoma; Ovarian Transitional Cell Carcinoma; Primary Peritoneal Serous Adenocarcinoma; Stage IIA Fallopian Tube Cancer AJCC v6 and v7; Stage IIA Ovarian Cancer AJCC V6 and v7; Stage IIB Fallopian Tube Cancer AJCC v6 and v7; Stage IIB Ovarian Cancer AJCC v6 and v7; Stage IIC Fallopian Tube Cancer AJCC v6 and v7; Stage IIC Ovarian Cancer AJCC v6 and v7; Stage IIIA Fallopian Tube Cancer AJCC v7; Stage IIIA Ovarian Cancer AJCC v6 and v7; Stage IIIA Primary Peritoneal Cancer AJCC v7; Stage IIIB Fallopian Tube Cancer AJCC v7; Stage IIIB Ovarian Cancer AJCC v6 and v7; Stage IIIB Primary Peritoneal Cancer AJCC v7; Stage IIIC Fallopian Tube Cancer AJCC v7; Stage IIIC Ovarian Cancer AJCC v6 and v7; Stage IIIC Primary Peritoneal Cancer AJCC v7; Stage IV Fallopian Tube Cancer AJCC v6 and v7; Stage IV Ovarian Cancer AJCC v6 and v7; Stage IV Primary Peritoneal Cancer AJCC v7; Undifferentiated Fallopian Tube Carcinoma; Undifferentiated Ovarian Carcinoma

  8. Editorial: Informationstechnische Bildung und Medienerziehung

    Directory of Open Access Journals (Sweden)

    Annemarie Hauf-Tulodziecki

    2001-10-01

    Full Text Available Die schulische Medienerziehung bzw. die Medienbildung hat ihre derzeit hohe öffentliche Aufmerksamkeit nicht zuletzt der Tatsache zu verdanken, dass gerade die so genannten «Neuen Medien» - heute oft mit den Schlagworten «Multimedia» oder «Internet» abgekürzt - wichtige Erziehungs- und Bildungsmassnahmen erforderlich machen. In der öffentlichen Diskussion gehören inhaltliche Kurzschlüsse zur Tagesordnung: Wenn von «Medienkompetenz» die Rede ist, verbirgt sich dahinter häufig nur ein «Internetführerschein». Diese Beobachtung ärgert nicht nur Medienpädagogen, sondern auch Vertreter einer Informationstechnischen Bildung (1, da berechtigte pädagogische Ansprüche beider Gruppen wenig Beachtung finden. Mittlerweile gibt es eine Reihe von Empfehlungen von BLK und KMK zu diesem Thema, in denen zudem deutlich auf die wechselseitigen Bezüge hingewiesen werden. Die wachsende Bedeutung des Mediums Computer und die weiter zunehmende Digitalisierung traditioneller Medien erfordert sowohl für die Medienerziehung als auch für die Informatische Bildung eine Weiterentwicklung ihrer Ziele und Inhalte. Die Gesellschaft für Informatik e.V. hat 1999 in ihrer Empfehlung «Informatische Bildung und Medienerziehung» aus ihrer Perspektive dargestellt, welche Aufgaben auf die Medienerziehung zukommen, wenn auch die Informations- und Kommunikationstechnologien bzw. die computerbasierten Medien in einer angemessenen Form thematisiert werden sollen. Erste praktische Ansätze, Inhalte aus beiden Bereichen bewusst zusammenzuführen, auch unter einer gemeinsamen Fach- oder Kursbezeichnung, sind häufig additiv und orientieren sich – trotz vorhandener Überschneidungen – an den etablierten medienpädagogischen oder an den informatischen Unterrichtsprinzipien. In dem vorliegenden Themenheft wird aus einer übergeordneten, medienpädagogischen Perspektive die Frage gestellt, wie eine konsistente Weiterentwicklung der Medienerziehung unter angemessener

  9. GROSSSPRENGUN UND MIKROSEISMIK

    Directory of Open Access Journals (Sweden)

    E. HARDTWIG

    1956-06-01

    Full Text Available Uéber die bei Sprengungen entstelienden Periodenspektren ist noch
    wenig bekannt, trotzdem in jedem Jahre Tausende von Sprengungen
    registriert werden. Die wenigen Arbeiten, die zu diesem Gegenstand erscliienen
    sind, stellen nur erste Versuche dar, den Aufbau der Spektren
    zu erklaren. Wàhrend etwa George Morris (* vorwiegend die bei
    Sprengungen si eh abspielenden Detonationsvorgànge zum Ausgangspunkt
    der Untersuchung macht, ist es bei IT. Menzel (2 die Interferenz von
    Primàrwelle und reflektierter Welle, deren Einfluss auf die Gestalt
    des Spektrums untersucht wird.

  10. Synthesis and crystal structure of terbium(III) meta-oxoborate Tb(BO{sub 2}){sub 3} ({identical_to} TbB{sub 3}O{sub 6}); Synthese und Kristallstruktur von Terbium(III)-meta-Oxoborat Tb(BO{sub 2}){sub 3} ({identical_to} TbB{sub 3}O{sub 6})

    Energy Technology Data Exchange (ETDEWEB)

    Nikelski, Tanja; Schleid, Thomas [Institut fuer Anorganische Chemie der Universitaet Stuttgart (Germany)

    2003-06-01

    The terbium meta-oxoborate Tb(BO{sub 2}){sub 3} ({identical_to} TbB{sub 3}O{sub 6}) is obtained as single crystals by the reaction of terbium, Tb{sub 4}O{sub 7} and TbCl{sub 3} with an excess of B{sub 2}O{sub 3} in gastight sealed platinum ampoules at 950 C after three weeks. The compound appears to be air- and water-resistant and crystallizes as long, thin, colourless needles which tend to growth-twinning due to their marked fibrous habit. The crystal structure of Tb(BO{sub 2}){sub 3} (orthorhombic, Pnma; a = 1598.97(9), b = 741.39(4), c = 1229.58(7) pm; Z = 16) contains strongly corrugated oxoborate layers {sub {infinity}}{sup 2}{l_brace}(BO{sub 2}){sup -}{r_brace} built of vertex-linked [BO{sub 4}]{sup 5-} tetrahedra (d(B-O) = 143 - 154 pm, and angsph;(O-B-O) = 102-115 ) which spread out parallel (100). The four crystallographically different Tb{sup 3+} cations all exhibit coordination numbers of eight towards the oxygen atoms (d(Tb-O) = 228-287 pm). The corresponding metal cation polyhedra [TbO{sub 8}]{sup 13+} too convene to layers (composition: {sub {infinity}}{sup 2}{l_brace}(Tb{sub 2}O{sub 11}){sup 16-}{r_brace}) which are likewise oriented parallel to the (100) plane. (Abstract Copyright [2003], Wiley Periodicals, Inc.) [German] Das Terbium-meta-Oxoborat Tb(BO{sub 2}){sub 3} ({identical_to} TbB{sub 3}O{sub 6}) entsteht einkristallin bei der Reaktion von Terbium, Tb{sub 4}O{sub 7} und TbCl{sub 3} mit einem Ueberschuss von B{sub 2}O{sub 3} in gasdicht verschlossenen Platinampullen nach drei Wochen bei 950 C. Die Verbindung ist luft- und wasserstabil und faellt in langen, duennen, farblosen Nadeln an, die aufgrund ihres ausgepraegt faserigen Habitus zur Wachstumsverzwillingung neigen. Die Kristallstruktur von Tb(BO{sub 2}){sub 3} (orthorhombisch, Pnma; a = 1598, 97(9), b = 741, 39(4), c = 1229, 58(7) pm; Z = 16) enthaelt parallel (100) verlaufende, stark gewellte Oxoborat-Schichten {sub {infinity}}{sup 2}{l_brace}(BO{sub 2}){sup -}{r_brace} aus

  11. Enterprise Portals und Enterprise Application Integration - Begriffsbestimmung und Integrationskonzeptionen

    OpenAIRE

    Schelp, Joachim; Winter, Robert

    2002-01-01

    Unter den Stichworten »Enterprise Portals« und »Enterprise Application Integration« werden neue Herausforderungen an die Applikationsarchitektur der Unternehmungen gestellt. Bei beiden spielt die Integration vorhandener und das Einfügen neuer Applikationen eine große Rolle. Beiden Themen ist gemein, dass sie die Diskussion bestimmter technischer Konzepte aus den vergangenen Jahren fortsetzen: Portale stellen das moderne Frontend dar, über das die verschiedenen E-Business-Konzepte umgesetzt we...

  12. Thermodynamic characteristics of systems with solid solutions composed of crystal hydrates of lanthanide and yttrium chlorides, at 250C. III. Systems of Roozeboom's type IV, with restricted solid solutions

    International Nuclear Information System (INIS)

    Sokolova, N.P.

    1983-01-01

    The values of the activity, the activity coefficients, the free energy of mixing and the excess free energy of mixing have been calculated for CeCl 3 -LnCl 3 -H 2 O systems (where Ln identical with Sm, Gd, Dy, Ho, Er, Y) containing solid solutions of types IV and IVa. It is shown that the stability of the solid solutions decreases with increasing difference between the radii of the cations of cerium and the second lanthanide, which enter into the composition of the components of the solid solutions. The factors determining the composition of a liquid solution corresponding to the eutonic point are specified

  13. Cyberbullying und Empathie : affektive, kognitive und medienbasierte Empathie im Kontext von Cyberbullying im Kindes- und Jugendalter

    OpenAIRE

    Pfetsch, Jan; Müller, Christin R.; Ittel, Angela

    2014-01-01

    "Bei medial vermittelter Kommunikation sinkt sowohl die Hemmschwelle für aggressive Verhaltensweisen wie Cyberbullying als auch die Wahrscheinlichkeit empathischer Reaktionen. Im Fokus der vorliegenden Studie mit 979 Schülerinnen und Schülern der 4.-8. Klassen (M=12.01, SD=1.68 Jahre, 55% weiblich) stand die Frage, ob Cyberbullies geringere Ausprägungen für affektive, kognitive und medienbasierte Empathie aufweisen als Unbeteiligte. Empathie wurde im Selbst- und Peerbericht erhoben. Hypothese...

  14. Jung und Alt im Dialog

    Directory of Open Access Journals (Sweden)

    Caroline Baetge

    2012-04-01

    Full Text Available Rezension zu: Kupser, Thomas, und Ida Pöttinger, Hrsg. 2011. Mediale Brücken: Generationen im Dialog durch aktive Medienarbeit. Gesellschaft - Altern - Medien 3. München: kopaed.

  15. Frauen in Philosophie und Wissenschaft

    Directory of Open Access Journals (Sweden)

    Regina Harzer

    2006-03-01

    Full Text Available Der von Brigitte Doetsch herausgegebene Band präsentiert die aktuelle Feministische Philosophie und sammelt Beiträge, die Einblick geben in den gegenwärtigen Forschungsstand, wie ihn „Philosophinnen im dritten Jahrtausend“ erreicht haben. Insgesamt neun, zum Teil interdisziplinär ausgerichtete Arbeiten werden vorgestellt. Das Themenspektrum ist weit: Geschichte der Philosophie; Politische Philosophie und Naturphilosophie; Epistemologie; Biopolitik und Bioethik als Bereiche praktischer Philosophie; Forschung über Geschlechterverhältnisse. Alle Beiträge gehen zurück auf eine Vortragsreihe des Braunschweiger Zentrums für Gender Studies (www.genderzentrum.de. Leser/-innen erhalten einen guten Überblick über die aktuelle Frauenforschung aus der Sicht theoretischer und praktischer Philosophie.

  16. Gesundheit und Pflege im Alter

    OpenAIRE

    Pfaff, Martin

    1989-01-01

    Gesundheit und Pflege im Alter : d. Gesundheitsreformgesetz (GRG) ; Möglichkeiten, Grenzen u. weitere Vorschläge / Martin Pfaff ; Klaus Deimer. - In: Expertengespräch "Pflege in der Familie". - Augsburg, 1989. - Getr. Zählung

  17. PREPARATION OF OXOPORPHINATOMANGANESE (IV) COMPLEX

    Energy Technology Data Exchange (ETDEWEB)

    Willner, I.; Otvos, J.; Calvin, M.

    1980-07-01

    Oxo-manganese-tetraphenylporphyrin (O=Mn{sup IV}-TPP) has been prepared by an oxygen-transfer reaction from iodosylbenzene to MnIITPP and characterized by its i.r. and field desorption mass spectra, which are identical to those of the product obtained by direct oxidation of Mn{sup III}(TPP) in an aqueous medium; it transfers oxygen to triphenylphosphine to produce triphenylphosphine oxide, and it is suggested that similar intermediates are important in oxygen activation by cytochrome P-450 as well as in the photosynthetic evolution of oxygen.

  18. Editorial: Computerspiele und Videogames in formellen und informellen Bildungskontexten

    Directory of Open Access Journals (Sweden)

    Johannes Fromme

    2008-01-01

    Full Text Available Computer- und Videospiele sind heute ein selbstverständlicher Bestandteil der Lebenswelt vieler Kinder und Jugendlicher, aber auch von (jüngeren Erwachsenen, die mit diesen neuen Medien aufgewachsen sind. Lange Zeit haben elektronische Bildschirmspiele allenfalls sporadische Beachtung gefunden. Weder in der Medienforschung oder Medienpädagogik noch in der breiteren Öffentlichkeit waren sie ein Gegenstand von breiterem Interesse.* In den letzten knapp zehn Jahren sind Video- und Computerspiele allerdings zunehmend in den Fokus der Aufmerksamkeit gerückt. Dabei sind in der massenmedial vermittelten Öffentlichkeit vor allem Amokläufe in Schulen in einen direkten Zusammenhang mit den Vorlieben (der Täter für bestimmte Computerspiele gebracht worden. Die auch von prominenten Politikern aufgegriffene These lautete, dass gewalthaltige Spiele wie der First Person Shooter «Counterstrike» ein virtuelles Trainingsprogramm für das Töten und daher als wesentliche Ursache solcher Schulmassaker anzusehen seien. Auf der Basis dieser kausalen Wirkungsannahmen bzw. der unterstellten negativen Lern- und Trainingseffekte werden seither immer wieder Forderungen nach einem Verbot solcher «Killerspiele» oder gar nach der Verbannung aller Bildschirmmedien aus den Kinderzimmern abgeleitet. Neben solcher skandalisierter Thematisierung ist aber zunehmend auch eine nüchterne wissenschaftliche Auseinandersetzung zu konstatieren. So haben sich seit Beginn des neuen Jahrtausends die «digital game studies» als interdisziplinäres Forschungsfeld etabliert. Im Jahr 2000 wurde innerhalb der Gesellschaft für Medienwissenschaft z.B. die AG Games gebildet, die sich zu einem wichtigen deutschsprachigen Forum für die wissenschaftliche Beschäftigung mit Computerspielen entwickelt hat, und im Jahr 2002 entstand die internationale Digital Games Research Association (DiGRA, die im September 2009 ihre vierte grosse Konferenz nach 2003, 2005 und 2007 durchgeführt hat

  19. Professionalisierung und Doping im Sport

    OpenAIRE

    Wüterich, Christoph

    2004-01-01

    Der Beitrag untersucht Zusammenhänge zwischen der zunehmenden Professionalisierung des Sports und dem Anstieg von Dopingvergehen. Er zeigt, dass im historischen Vergleich beide Phänomene nicht neu sind, dass sich die Probleme aufgrund der steigenden Bedeutung des Leistungssports aber zugespitzt haben. Ausgehend von einer juristischen und sozioökonomischen Analyse der Anreize zu Doping werden Lösungsvorschläge entwickelt. The author analyzes the interdependencies between a growing commercia...

  20. Pepsi und Coca ewige Rivallen

    OpenAIRE

    POLJAKOW ANDREJ; POLJAKOW WLADIMIR

    2016-01-01

    Fast jeder kennt Pepsi und Coca. Man kann sie treffen praktisch in jedem Geschaeft. Dennoch nicht alle wissen, dass diese Firmen Erzrivallen sind und das ihre Rivallitaet sich seit Ewigkeit dauert. In meinem Artikel, welches ich in der Zusammenarbeit mit meinem Vater schrieb versuchte ich den Weg beider Firmen von der Gruendung bis heutigen Tagen zu beschreiben. Auf diesem Weg trafen sich technologische Aenderungen, Gerichtsverhandlungen, sowie geschickte Tricks. Wichtige Rolle spielt auch Ma...

  1. Tax Shield, Insolvenz und Zinsschranke

    OpenAIRE

    Arnold, Sven; Lahmann, Alexander; Schwetzler, Bernhard

    2010-01-01

    Dieser Beitrag analysiert den Wertbeitrag fremdfinanzierungsbedingter Steuervorteile (Tax Shield) unter realistischen Bedingungen (keine Negativsteuer; mögliche Insolvenz) für unterschiedliche Finanzierungspolitiken. Zusätzlich wird der Effekt der sogenannten Zinsschranke auf den Wert des Tax Shield ermittelt. Die Bewertung des Tax Shield mit und ohne Zinsschranke findet im einperiodigen Fall auf der Basis von Optionspreismodellen und im mehrperiodigen Fall auf der Basis von Monte Carlo Simul...

  2. IV treatment at home

    Science.gov (United States)

    ... Other IV treatments you may receive after you leave the hospital include: Treatment for hormone deficiencies Medicines for severe nausea that cancer chemotherapy or pregnancy may cause Patient-controlled analgesia (PCA) for pain (this is IV ...

  3. Neue Shandite und Parkerite. Darstellung und röntgenographische Charakterisierung

    OpenAIRE

    Anusca, Irina

    2009-01-01

    Das Ziel dieser Arbeit war es, neue Verbindungen mit Shandit- und Parkeritstruktur zu darstellen und mittels röntgenographischen Methoden (Pulverdiffraktometrie und Einkristallanalyse), das thermische Verhalten durch DTA / DSC - Messungen und Elektronenmikroskopische Untersuchungen (REM, EDX) zu charakterisieren. Die vorliegende Arbeit ist wie folgt im zwei Themen gegliedert: Shandite und Parkerite. Der ersten Teil dieser Arbeit befaßt sich mit metallreichen ternären Chalkogeniden M3A2X2, ...

  4. Molekulargenetische Studie zur Verbreitung und Interaktion von PCV-2 bei Haus- und Wildschweinen

    OpenAIRE

    Bronnert, Bastian Balthasar Marcel

    2014-01-01

    Im Rahmen der vorliegenden Arbeit wurden Wild- und Hausschweingewebeproben aus den Jahren 2005 bis 2008 mittels nested PCR auf das Vorkommen von PCV-2 untersucht und die positiv getesteten Proben mittels Realtime PCR quantifiziert. Zusätzlich wurden die Proben im Institut für Pathologie der Justus-Liebig-Universität histologisch und immunhistologisch untersucht (Dissertation Hohloch). Ziel war es das Vorkommen von PCV-2 und die Häufigkeit von PCV-2 assoziierter Erkankungen bei Haus- und Wilds...

  5. Vom Stabilitäts- und Wachstumsgesetz zum Wohlstands- und Nachhaltigkeitsgesetz

    OpenAIRE

    Koll, Willi

    2016-01-01

    Das Stabilitäts- und Wachstumsgesetz wird bald 50 Jahre alt. Neue Herausforderungen erfordern eine Wirtschaftspolitik, die weit über die Ziele des Gesetzes hinausweist. Sie muss wirtschaftliches Wachstum und Stabilität mit den Zielen fiskalischer, sozialer und ökologischer Nachhaltigkeit auf nationaler und europäischer Ebene verbinden. Der Autor gibt einen Über blick über solche umfassenden Zielsysteme und leitet daraus ab, wie eine derart erweiterte wirtschaftspolitische Agenda in ein Wohlst...

  6. Interconnectedness und digitale Texte

    Directory of Open Access Journals (Sweden)

    Detlev Doherr

    2013-04-01

    Full Text Available Zusammenfassung Die multimedialen Informationsdienste im Internet werden immer umfangreicher und umfassender, wobei auch die nur in gedruckter Form vorliegenden Dokumente von den Bibliotheken digitalisiert und ins Netz gestellt werden. Über Online-Dokumentenverwaltungen oder Suchmaschinen können diese Dokumente gefunden und dann in gängigen Formaten wie z.B. PDF bereitgestellt werden. Dieser Artikel beleuchtet die Funktionsweise der Humboldt Digital Library, die seit mehr als zehn Jahren Dokumente von Alexander von Humboldt in englischer Übersetzung im Web als HDL (Humboldt Digital Library kostenfrei zur Verfügung stellt. Anders als eine digitale Bibliothek werden dabei allerdings nicht nur digitalisierte Dokumente als Scan oder PDF bereitgestellt, sondern der Text als solcher und in vernetzter Form verfügbar gemacht. Das System gleicht damit eher einem Informationssystem als einer digitalen Bibliothek, was sich auch in den verfügbaren Funktionen zur Auffindung von Texten in unterschiedlichen Versionen und Übersetzungen, Vergleichen von Absätzen verschiedener Dokumente oder der Darstellung von Bilden in ihrem Kontext widerspiegelt. Die Entwicklung von dynamischen Hyperlinks auf der Basis der einzelnen Textabsätze der Humboldt‘schen Werke in Form von Media Assets ermöglicht eine Nutzung der Programmierschnittstelle von Google Maps zur geographischen wie auch textinhaltlichen Navigation. Über den Service einer digitalen Bibliothek hinausgehend, bietet die HDL den Prototypen eines mehrdimensionalen Informationssystems, das mit dynamischen Strukturen arbeitet und umfangreiche thematische Auswertungen und Vergleiche ermöglicht. Summary The multimedia information services on Internet are becoming more and more comprehensive, even the printed documents are digitized and republished as digital Web documents by the libraries. Those digital files can be found by search engines or management tools and provided as files in usual formats as

  7. Gosvig und das Problem der Geschichte

    DEFF Research Database (Denmark)

    Wentzer, Thomas Schwarz

    2016-01-01

    Der Essay geht der Frage nach, wieso so viele philosophische Bücher, insbesondere innerhalb der sogenannten 'kontinentalen' Philosophie des 20. Jhs, einen Titel tragen, der durch die Struktur 'x und y' gekennzeichnet ist. Hat Heideggers 'Sein und Zeit' auch hier Schule gemacht? Wenn ja, wie so? U...... These, dass die Iteration des 'und' tatsächlich und in Kontrast zur Genetivkonstruktion der Idealisten ('Phänomenologie des Geistes') die Geschichtlichkeit im Zeitalter postsubjektivistischen Denkens reflektiert....

  8. Mensch und Maschine in Übersetzungsprozessen

    DEFF Research Database (Denmark)

    Hansen, Gyde

    2014-01-01

    gebrauchstauglich sein. In meinem empirischen Projekt zur Erforschung notwendiger Kompetenzen, zum Übersetzen, Revidieren und zum Pre- und Post-Editing, TraREdit, arbeite ich mit den Sprachen Deutsch, Dänisch und Englisch. Trotz offensichtlicher Mängel von Maschinenübersetzungen muss man erkennen, dass diese besser...

  9. Sprachvermittlung und Spracherwerb in Afrika. Deutsch nach ...

    African Journals Online (AJOL)

    erlernende Fremdsprache richtig und auf hohem Niveau sprechen zu lernen. Lehrende sollten alles daransetzen zu verhindern, dass die Lernenden in dieser Vereinfachungsphase stehen bleiben und ihre Sprache fossilieren. Die Bewusstmachung der Ähnlichkeiten von Zulu und. Deutsch kann dazu beitragen, indem man ...

  10. Zustand und Perspektiven der Kapitalmarktfinanzierung in Deutschland

    DEFF Research Database (Denmark)

    Beck, Thorsten; Kaserer, Christoph; Rapp, Marc Steffen

    2016-01-01

    Die Autoren haben sich im Rahmen des durch das Bundesministerium für Wirtschaft und Energie (BMWi) in Auftrag gegebenen Forschungsprojekts „Beteiligungs- und Kapitalmarktfinanzierung im deutschen Finanzsystem: Zustand und Entwicklungsperspektiven“ (Dienstleistungsprojekt I C 4 -27/14) mit dem Zus...

  11. Data Science und Analytics in Bibliotheken

    Directory of Open Access Journals (Sweden)

    José Luis Preza

    2017-09-01

    Full Text Available Bibliotheken sind in einer priviligierten Situation: Sie verwalten riesige Mengen von Daten und Informationen. Data Science und Analytics-Methoden ermöglichen es Bibliotheken, den Inhalt, den sie verwalten, voll auszunutzen, um den Nutzern bessere Informationen, Suche und Empfehlungen zu bieten.

  12. Marktkonstitution und Regulierung der unabhängigen Film- und Fernsehproduktion : Staat, Verbände und Gewerkschaften im deutsch-britischen Vergleich

    OpenAIRE

    Elbing, Sabine; Voelzkow, Helmut

    2006-01-01

    "In einem internationalen Vergleich von Deutschland und Großbritannien wird untersucht, welche Beiträge die staatliche Politik und die Wirtschafts- und Sozialpartner (Wirtschafts- und Arbeitgeberverbände sowie Gewerkschaften) zur Förderung der unabhängigen Film- und Fernsehproduktion leisten. Es wird gezeigt, dass die britische Medienpolitik die Position der unabhängigen Film- und Fernsehproduktion gegenüber den Fernsehsendern gestärkt hat. In Deutschland hat die Medienpolitik darauf verzicht...

  13. Syntheses of polystyrene supported chelating resin containing the Schiff base derived from salicylaldehyde and triethylene tetramine and its copper(II), nickel(II), cobalt(II), iron(III), zinc(II), cadmium(II), molybdenum(VI), zirconium(IV) and uranium(VI) complexes

    International Nuclear Information System (INIS)

    Syamal, A.; Singh, M.M.

    1998-01-01

    A new polymer-anchored chelating ligand has been synthesized by the reaction of chloromethylated polystyrene (containing 0.94 mmol of Cl per gram of resin and 1% cross-linked with divinylbenzene) and the Schiff base derived from salicylaldehyde and triethylenetetramine. A new series of polystyrene supported, Cu(II), Ni(II), Co(II), Fe(III), Zn(II), Cd(II), Zr(IV), dioxomolybdenum (VI) and dioxouranium (VI) complexes of the formulae PS-LCu, PS-LNi, PS-LCo, PS-LFeCl.DMF, PS-LZn, PS-LCd, PS-LZr(OH) 2 . DMF, PS L MoO 2 and PS-LUO 2 (where PS-LH 2 = polymer-anchored Schiff base and DMF dimethyl-formamide) have been synthesized and characterised by elemental analysis, infrared, electronic spectra and magnetic susceptibility measurements. The complexes PS-LCu, PS-LNi and PS-LCo have square planar structure, PS-LFeCl.DMF, PS-LMoO 2 and PS-LUO 2 have octahedral structure, PS L Zn and PS-LCd are tetrahedral and PS-LZr(OH) 2 .DMF is pentagonal bipyramidal. The polymer-anchored Cu(II), Co(II) and Fe(III) complexes are paramagnetic while Ni(II), Zn(II), Cd(II), Zr(IV), dioxomolybdenum(VI) and dioxouranium(VI) complexes are diamagnetic. The negative shift of the v (C=N) (azomethine) and the positive shift of v (C--O)(phenolic) are indicative of ONNO donor behaviour of the polymer-anchored Schiff base. (author)

  14. Synthesis, structures, and luminescent properties of sodium rare-earth metal(III) chloride oxotellurates(IV), Na{sub 2}Ln{sub 3}Cl{sub 3}[TeO{sub 3}]{sub 4} (Ln = Sm, Eu, Gd, Tb, Dy, and Ho)

    Energy Technology Data Exchange (ETDEWEB)

    Charkin, Dmitri O.; Dorofeev, Sergey G.; Berdonosov, Peter S.; Dolgikh, Valery A. [Department of Chemistry, Lomonosov Moscow State University (Russian Federation); Zitzer, Sabine; Greiner, Stefan; Schleid, Thomas [Institut fuer Anorganische Chemie, Universitaet Stuttgart (Germany); Olenev, Andrei V. [Department of Chemistry, Lomonosov Moscow State University (Russian Federation); Sine Theta Ltd., Moscow (Russian Federation)

    2017-11-17

    Six sodium rare-earth metal(III) chloride oxotellurates(IV), Na{sub 2}Ln{sub 3}Cl{sub 3}[TeO{sub 3}]{sub 4}, isostructural to Na{sub 2}Y{sub 3}Cl{sub 3}[TeO{sub 3}]{sub 4}, were synthesized by flux techniques and characterized by single-crystal XRD. The compounds crystallize in the monoclinic space group C2/c with lattice constants a = 23.967(1), b = 5.6342(3), c = 16.952(1) Aa, β = 134.456(5) for Ln = Sm, a = 23.932(2), b = 5.6044(5), c = 17.134(1) Aa, β = 135.151(6) for Ln = Eu, a = 23.928(1), b = 5.5928(1), c = 17.1133(8) Aa, β = 135.366(3) for Ln = Gd, a = 23.907(1), b = 5.569(3), c = 16.745(1) Aa, β = 134.205(3) for Ln = Tb, a = 23.870(1), b = 5.547(3), c = 16.665(1) Aa, β = 134.102(3) for Ln = Dy, and a = 23.814(1), b = 5.526(3), c = 16.626(1) Aa, β = 134.016(3) for Ln = Ho and Z = 4. Their crystal structure can be considered as a framework built of intergrowing Ln-O and Na-(O,Cl) slabs with channel walls decorated by tellurium atoms of [TeO{sub 3}]{sup 2-} groups. The luminescent properties of the new compounds due to the Ln{sup 3+} cations are described and discussed. We also discuss the crystal chemistry of various alkali-metal rare-earth metal(III) halide oxochalcogenates(IV). (copyright 2017 WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

  15. [Die baltischen Lande im Zeitalter der Reformation und Konfessionalisierung : Livland, Estland, Ösel, Ingermanland, Kurland und Lettgallen : Stadt, Land und Konfession 1500-1721. Teil 4. Hrsg. von Matthias Asche, Werner Buchholtz und Anton Schindlin

    Index Scriptorium Estoniae

    Maasing, Madis, 1984-

    2013-01-01

    Arvustus: Die baltischen Lande im Zeitalter der Reformation und Konfessionalisierung : Livland, Estland, Ösel, Ingermanland, Kurland und Lettgallen : Stadt, Land und Konfession 1500-1721. Teil 4. (Katholisches Leben und Kirchenreform im Zeitalter der Glaubensspaltung, 72). Hrsg. von Matthias Asche, Werner Buchholtz und Anton Schindling. Verlag Aschendorff. Münster 2012

  16. Oxochloroalkoxide of the Cerium (IV and Titanium (IV as oxides precursor

    Directory of Open Access Journals (Sweden)

    Machado Luiz Carlos

    2002-01-01

    Full Text Available The Cerium (IV and Titanium (IV oxides mixture (CeO2-3TiO2 was prepared by thermal treatment of the oxochloroisopropoxide of Cerium (IV and Titanium (IV. The chemical route utilizing the Cerium (III chloride alcoholic complex and Titanium (IV isopropoxide is presented. The compound Ce5Ti15Cl16O30 (iOPr4(OH-Et15 was characterized by elemental analysis, FTIR and TG/DTG. The X-ray diffraction patterns of the oxides resulting from the thermal decomposition of the precursor at 1000 degreesC for 36 h indicated the formation of cubic cerianite (a = 5.417Å and tetragonal rutile (a = 4.592Å and (c = 2.962 Å, with apparent crystallite sizes around 38 and 55nm, respectively.

  17. GIS und Fernerkundung für Landschaftsmonitoring und Landschaftsplanung

    Science.gov (United States)

    Blaschke, Thomas

    2002-09-01

    Der Beitrag beleuchtet die Rolle der Geographischen Informationsverarbeitung hinsichtlich der Aufgaben in der Umweltüberwachung. Dabei wird über etablierte "sektorale" Umweltbeobachtungssysteme (Boden, Wasser, Luft) hinaus zunehmend der Bedarf an einer integrativen Betrachtung der Landschaft deutlich, insbesondere in mittleren bis kleinen Maßstäben. Wie verändern sich ganze Landschaften in Deutschland, in Europa? Welches sind Bereiche kritischer Abnahme landschaftlicher Diversität? Wie können landschaftliche Vielfalt und Eigenart erhalten beziehungsweise deren Erhalt überwacht werden? Diese und weitere Fragen drängen sich vor allem bei der Erstellung langfristiger Szenarien der Veränderung ganzer Landschaften und in der Nachhaltigkeitsdiskussion auf.

  18. Ethik, Recht und Theologie. Reproduktionstechnologien in Polen

    Directory of Open Access Journals (Sweden)

    Susanne Lettow

    2006-03-01

    Full Text Available Die bisherigen Debatten um Stammzellforschung, Klonen und Reproduktionstechnologien wurden in Deutschland weitgehend im nationalstaatlichen Rahmen und mit Blick auf Entwicklungen im angelsächsischen Raum geführt. Dabei sind diese Forschungsrichtungen und Technologien kein genuin „westliches“ Phänomen – immerhin wurde das erste Retortenkind in Polen bereits 1987 geboren. Heidi Hofmann lässt in ihrem Band polnische Philosoph/-innen, Jurist/-innen und Politikerinnen zu Wort kommen und öffnet den Blick dafür, dass die Art und Weise, in der Reproduktionstechnologien gesellschaftlich problematisiert werden, in Polen durch ganz andere politische, kulturelle und historische Konstellationen geprägt ist als in Deutschland.

  19. Restaurierung von Seen und Renaturierung von Seeufern

    Science.gov (United States)

    Grüneberg, Björn; Ostendorp, Wolfgang; Leßmann, Dieter; Wauer, Gerlinde; Nixdorf, Brigitte

    Süßwasserseen haben als ökosysteme und Lebensraum für Pflanzen und Tiere eine herausragende Bedeutung für die Artenvielfalt auf der Erde und prägen als Landschaftselemente unsere natürliche Umwelt. Seen fungieren als natürliche Stoffsenken, vor allem für Kohlenstoff und Nährstoffe, aber auch als Senken für in ihren Einzugsgebieten emittierte gelöste und feste Schadstoffe. Darüber hinaus ist Wasser eine wichtige Naturressource. Süßwasserseen stellen in den meisten Regionen der Erde lebenswichtige Quellen für die Versorgung mit Trinkwasser und tierischem Eiweiß (Fischfang) dar. Sie dienen als Wasserspeicher für die landwirtschaftliche und industrielle Nutzung. Auch für Erholungsaktivitäten des Menschen kommt ihnen eine große Bedeutung zu.

  20. E-Government und E-Banking: Aktueller Stand, Evaluation und Erfolgsfaktoren

    OpenAIRE

    Bayer, Tobias

    2002-01-01

    Zu Max Webers Zeiten entsprach die Bürokratie noch ganz dem Vorbild des preussischen Militärs " klare Hierarchien und klare Aufgabenbereiche schlugen sich nieder in Effizienz und Effektivität. Heute ist das Bild getrübt und Worte wie "Erstarrung", "Überreglementierung" und "Verwaltungskultur" machen die Runde. Neben den gestiegenen Erwartungen der Bürger, die sich in Zeiten des E-Banking und E-Commerce nicht mehr in lange Warteschlangen einreihen wollen und auf die rigiden Öffnungszeiten der ...

  1. Paclitaxel/carboplatin with or without sorafenib in the first-line treatment of patients with stage III/IV epithelial ovarian cancer: a randomized phase II study of the Sarah Cannon Research Institute

    International Nuclear Information System (INIS)

    Hainsworth, John D; Thompson, Dana S; Bismayer, John A; Gian, Victor G; Merritt, William M; Whorf, Robert C; Finney, Lindsey H; Dudley, B Stephens

    2015-01-01

    This trial compared the efficacy and toxicity of standard first-line treatment with paclitaxel/carboplatin versus paclitaxel/carboplatin plus sorafenib in patients with advanced ovarian carcinoma. Patients with stage 3 or 4 epithelial ovarian cancer with residual measurable disease or elevated CA-125 levels after maximal surgical cytoreduction were randomized (1:1) to receive treatment with paclitaxel (175 mg/m 2 , 3 h infusion, day 1) and carboplatin (AUC 6.0, IV, day 1) with or without sorafenib 400 mg orally twice daily (PO BID). Patients were reevaluated for response after completing 6 weeks of treatment (two cycles); responding or stable patients received six cycles of paclitaxel/carboplatin. Patients receiving the sorafenib-containing regimen continued sorafenib (400 PO BID) for a total of 52 weeks. Eighty-five patients were randomized and received treatment.Efficacy was similar for patients receiving paclitaxel/carboplatin/sorafenib versus paclitaxel/carboplatin: overall response rates 69% versus 74%; median progression-free survival 15.4 versus 16.3 months; 2 year survival 76% versus 81%. The addition of sorafenib added substantially to the toxicity of the regimen; rash, hand–foot syndrome, mucositis, and hypertension were significantly more common in patients treated with sorafenib. The addition of sorafenib to standard paclitaxel/carboplatin did not improve efficacy and substantially increased toxicity in the first-line treatment of advanced epithelial ovarian cancer. Based on evidence from this study and other completed trials, sorafenib is unlikely to have a role in the treatment of ovarian cancer

  2. Inhibitory Effect of Dissolved Silica on the H2O2 Decomposition by Iron(III) and Manganese(IV) Oxides: Implications for H2O2-based In Situ Chemical Oxidation

    Science.gov (United States)

    Pham, Anh Le-Tuan; Doyle, Fiona M.; Sedlak, David L.

    2011-01-01

    The decomposition of H2O2 on iron minerals can generate •OH, a strong oxidant that can transform a wide range of contaminants. This reaction is critical to In Situ Chemical Oxidation (ISCO) processes used for soil and groundwater remediation, as well as advanced oxidation processes employed in waste treatment systems. The presence of dissolved silica at concentrations comparable to those encountered in natural waters decreases the reactivity of iron minerals toward H2O2, because silica adsorbs onto the surface of iron minerals and alters catalytic sites. At circumneutral pH values, goethite, amorphous iron oxide, hematite, iron-coated sand and montmorillonite that were pre-equilibrated with 0.05 – 1.5 mM SiO2 were significantly less reactive toward H2O2 decomposition than their original counterparts, with the H2O2 loss rates inversely proportional to the SiO2 concentration. In the goethite/H2O2 system, the overall •OH yield, defined as the percentage of decomposed H2O2 producing •OH, was almost halved in the presence of 1.5 mM SiO2. Dissolved SiO2 also slows the H2O2 decomposition on manganese(IV) oxide. The presence of dissolved SiO2 results in greater persistence of H2O2 in groundwater, lower H2O2 utilization efficiency and should be considered in the design of H2O2-based treatment systems. PMID:22129132

  3. Nano-structured iron(III)–cerium(IV) mixed oxide: Synthesis, characterization and arsenic sorption kinetics in the presence of co-existing ions aiming to apply for high arsenic groundwater treatment

    Energy Technology Data Exchange (ETDEWEB)

    Basu, Tina; Ghosh, Uday Chand, E-mail: ucghosh@yahoo.co.in

    2013-10-15

    Here, we aim to develop an efficient material by eco-friendly green synthetic route that was characterized to be nano-structured. The thermal stability of the sample was well established from the consistent particle size at different temperature and also, from differential thermal analysis. The bimetal mixed oxide contained agglomerated crystalline nano-particles of dimension 10-20 nm, and its empirical composition as FeCe{sub 1.1}O{sub 7.6}. The surface area ( m{sup 2}g{sup -1}), pore volume ( cm{sup 3} g{sup -1}) and maximum pore width (nm) obtained from BET analysis were found to be 104, 0.1316 and 5.68 respectively. Use of this material for estimating arsenic sorption kinetics in presence of some groundwater occurring ions revealed that the pseudo-second order kinetic model is unambiguously the best fit option to describe the nature of the reactions. Groundwater occurring ions exhibit a notable decrease of As(V)-sorption capacity (no other ion > chloride ∼ silicate > sulfate > bicarbonate > phosphate). However, As(III)-sorption capacity of the bimetal mixed oxide was nominally influenced by the presence of the above ions in the reaction system. Rate determining step of arsenic sorption reactions was confirmed to be a multistage process in the presence of the above ions at pH ∼ 7.0 and 30 °C.

  4. Nano-structured iron(III)–cerium(IV) mixed oxide: Synthesis, characterization and arsenic sorption kinetics in the presence of co-existing ions aiming to apply for high arsenic groundwater treatment

    International Nuclear Information System (INIS)

    Basu, Tina; Ghosh, Uday Chand

    2013-01-01

    Here, we aim to develop an efficient material by eco-friendly green synthetic route that was characterized to be nano-structured. The thermal stability of the sample was well established from the consistent particle size at different temperature and also, from differential thermal analysis. The bimetal mixed oxide contained agglomerated crystalline nano-particles of dimension 10-20 nm, and its empirical composition as FeCe 1.1 O 7.6 . The surface area ( m 2 g -1 ), pore volume ( cm 3 g -1 ) and maximum pore width (nm) obtained from BET analysis were found to be 104, 0.1316 and 5.68 respectively. Use of this material for estimating arsenic sorption kinetics in presence of some groundwater occurring ions revealed that the pseudo-second order kinetic model is unambiguously the best fit option to describe the nature of the reactions. Groundwater occurring ions exhibit a notable decrease of As(V)-sorption capacity (no other ion > chloride ∼ silicate > sulfate > bicarbonate > phosphate). However, As(III)-sorption capacity of the bimetal mixed oxide was nominally influenced by the presence of the above ions in the reaction system. Rate determining step of arsenic sorption reactions was confirmed to be a multistage process in the presence of the above ions at pH ∼ 7.0 and 30 °C.

  5. Personen- und Güterverkehr

    Science.gov (United States)

    Flämig, Heike; Gertz, Carsten; Mühlhausen, Thorsten

    Im Jahr 2010 war in Deutschland der Verkehrssektor für fast 20 % der energiebedingten Treibhausgase verantwortlich. Das Klima hat sich bereits so weit verändert, dass zur Sicherung der Funktion der Verkehrssysteme auch Anpassungsmaßnahmen notwendig sind. Diese Maßnahmen müssen durch verkehrsreduzierende bzw. -beeinflussende Maßnahmen ergänzt werden. Ausgehend von den Emissionen im Verkehrssektor und möglichen Minderungen schlägt das Kapitel den Bogen zu Optionen der Anpassung an den Klimawandel, die ausführlich und konkret dargestellt werden. Besonders betrachtet werden die mannigfaltigen Gefahren der Rückkopplung sowie die vielfältigen Wechselwirungen mit anderen Themengebieten und Sektoren.

  6. Osteoporose und Genetik des Knochenstoffwechsels

    Directory of Open Access Journals (Sweden)

    Obermayer-Pietsch B

    2002-01-01

    Full Text Available Osteoporose ist in hohem Maß genetisch determiniert. Neue Wege der molekularbiologischen Forschung haben sich in den letzten Jahren auf diesem Gebiet etabliert. "Gene mapping" mit polymorphen genetischen Markern auf der Suche nach Phänotyp-assoziierten Genen ist ein aufwendiges, aber vielversprechendes Verfahren und wird durch die Erkenntnisse des Human Genome Projects beschleunigt. So wurde jüngst u. a. das Low-density Lipoprotein 5-Gen als wichtig für den Knochenstoffwechsel identifiziert. Kandidaten-gene wie Hormonrezeptor-, Cytokin- oder Kollagen-Gene werden hinsichtlich ihrer Gen-Gen- und Gen-Umwelt- Interaktionen untersucht und erlauben neue funktionelle Einsichten in Erkrankungen des Knochenstoffwechsels. Mutationen der Kollagen-Gene sind bei einigen seltenen Erkrankungen, wie dem Osteoporose-Pseudogliom-Syndrom oder der Osteogenesis imperfecta gefunden worden, könnten aber auch für häufige Varianten von Bindegewebsstörungen wie der congenitalen Hüftdysplasie verantwortlich sein, die etwa 10 % der weiblichen kaukasischen Bevölkerung in unterschiedlichem Ausmaß betrifft. Osteoporose am Schenkelhals und erhöhte Gelenkslaxizität sowie andere generalisierte Veränderungen des Knochen- und Kollagenstoffwechsels können hier möglicherweise ebenfalls durch Störungen des Kollagen I alpha 1-Gens erklärt werden. In Summe können wir zahlreiche neue Einsichten in die Pathophysiologie des Skelettsystems erwarten, die uns auch neue Zugangswege für Diagnostik und Therapie unserer Patienten ermöglichen werden.

  7. CLILiG und Musikunterricht

    Directory of Open Access Journals (Sweden)

    Merle Jung

    2015-10-01

    Full Text Available Der Einsatz von Musik und Liedern im Sprachunterricht ist seit der Entwicklung der kommunikativen Methoden ein beliebtes Thema in der Fremdsprachendidaktik. Musik und Sprache haben Ähnlichkeiten bei den kognitiven Verarbeitungsprozessen und der gedächtnisstützende Einfluss der Musik und ihr Nutzen für das Sprachenlernen sind allgemein bekannt. Dieser Nutzen wird aber meistens nur aus der (fremdsprachlichen Perspektive gezogen, die musikalische Erziehung der Lernenden bleibt im Hintergrund. Dabei bietet der bilinguale Musikunterricht mit der klaren Ausrichtung auf die musikalischen Ziele eine gute Möglichkeit, diese zwei Bereiche – Musik und Sprache – gleichwertig miteinander zu verbinden. Das Ziel des vorliegenden Beitrags ist es, die Vorteile des bilingualen Musikunterrichts zu erörtern und an einem Beispielmodul zum Thema Wetter im Herbst zu verdeutlichen. The use of music and songs in language teaching has been a popular topic in foreign language didactics since the development of communicative methods. Music and language have similarities in cognitive processing and the memory supporting influence of music and its beneficial effect on language learning are generally known. However, this benefit will usually be drawn only from the (foreign language perspective, the musical education of the learners remains in the background. Yet bilingual music education with a clear focus on the musical goals provides a great opportunity to connect these two areas - music and language - equally to each other. The aim of this paper is to discuss the advantages of bilingual music education and to present an example based on the bilingual module Weather in Autumn.

  8. Report for 2011 from the Bordeaux IVS Analysis Center

    Science.gov (United States)

    Charlot, Patrick; Bellanger, Antoine; Bourda, Geraldine; Collioud, Arnaud; Baudry, Alain

    2012-01-01

    This report summarizes the activities of the Bordeaux IVS Analysis Center during the year 2011. The work focused on (i) regular analysis of the IVS-R1 and IVS-R4 sessions with the GINS software package; (ii) systematic VLBI imaging of the RDV sessions and calculation of the corresponding source structure index and compactness values; (iii) imaging of the sources observed during the 2009 International Year of Astronomy IVS observing session; and (iv) continuation of our VLBI observational program to identify optically-bright radio sources suitable for the link with the future Gaia frame. Also of importance is the enhancement of the IVS LiveWeb site which now comprises all IVS sessions back to 2003, allowing one to search past observations for session-specific information (e.g. sources or stations).

  9. Strategische Beschaffung: Grundlagen, Planung und Umsetzung eines integrierten Supply Management

    NARCIS (Netherlands)

    van Weele, A.J.; Eßig, M.

    2017-01-01

    Dieses Buch bietet – erstmalig in deutscher Übersetzung – eine umfassende und sehr anschauliche Darstellung zu Grundlagen, Planung und Umsetzung einer modernen Beschaffungsfunktion. Beschaffung und Supply Management werden dabei als wesentliches Bindeglied innerhalb des Managementsystems eines

  10. Theoriebedingte Wörterbuchform- probleme und wörterbuch ...

    African Journals Online (AJOL)

    zunehmend mehr neue Elemente der Wörterbuchform im Vorspann, im Wörterverzeichnis und im. Nachspann ...... tur und -architektur aufweisen und sich nur quantitativ bei den überdachten ...... modernen Printwörterbüchern. Lexikos 18: ...

  11. Emil Fahrenkamp : Bauten und Projekte für Berlin

    NARCIS (Netherlands)

    Jacob, B.

    2006-01-01

    Thema der vorliegenden Arbeit ist die umfassende Aufarbeitung und Dokumentation der Bauten und Projekte Emil Fahrenkamps (*1885, 1966) in Berlin und Potsdam-Babelsberg sowie die kritische Einordnung seiner Arbeiten in den Kontext der Baugeschichte des 20. Jahrhunderts. Den zentralen

  12. [Preussen und Livland im Zeichen der Reformation] / Anti Selart

    Index Scriptorium Estoniae

    Selart, Anti, 1973-

    2015-01-01

    Arvustus: Preussen und Livland im Zeichen der Reformation. Hrsg. von Arno Mentzel-Reuters und Klaus Neitmann. (Tagungsberichte der Historischen Kommission für ost- und westpreussische Landesforschung, 28). Fibre Verlag. Osnabrück 2014

  13. Phase II Trial of Combined Modality Therapy With Concurrent Topotecan Plus Radiotherapy Followed by Consolidation Chemotherapy for Unresectable Stage III and Selected Stage IV Non-Small-Lung Cancer

    International Nuclear Information System (INIS)

    Seung, Steven K.; Ross, Helen J.

    2009-01-01

    Purpose: The optimal combination of chemotherapy and radiotherapy (RT) and the role of consolidation chemotherapy in patients with locally advanced non-small-cell lung cancer (NSCLC) are unknown. Topotecan is active against NSCLC, can safely be combined with RT at effective systemic doses, and can be given by continuous infusion, making it an attractive study agent against locally advanced NSCLC. Methods and Materials: In this pilot study, 20 patients were treated with infusion topotecan 0.4 mg/m 2 /d with three-dimensional conformal RT to 63 Gy both delivered Monday through Friday for 7 weeks. Patients without progression underwent consolidation chemotherapy with etoposide and a platinum agent for one cycle followed by two cycles of docetaxel. The study endpoints were treatment response, time to progression, survival, and toxicity. Results: Of the 20 patients, 19 completed induction chemoradiotherapy and 13 completed consolidation. Of the 20 patients, 18 had a partial response and 1 had stable disease after induction chemoradiotherapy. The 3-year overall survival rate was 32% (median, 18 months). The local and distant progression-free survival rate was 30% (median, 21 months) and 58% (median, not reached), respectively. Three patients developed central nervous system metastases, 1 within 228 days, 1 within 252 days, and 1 within 588 days. Three patients had pulmonary emboli. Therapy was well tolerated with 1 of 20 developing Grade 4 lymphopenia. Grade 3 hematologic toxicity was seen in 17 of 20 patients but was not clinically significant. Other Grade 3 toxicities included esophagitis in 3, esophageal stricture in 2, fatigue in 8, and weight loss in 1. Grade 3 pneumonitis occurred in 6 of 20 patients. Conclusion: Continuous infusion topotecan with RT was well tolerated and active in the treatment of poor-risk patients with unresectable Stage III NSCLC

  14. DSM-IV: a nosology sold before its time?

    Science.gov (United States)

    Zimmerman, M; Jampala, V C; Sierles, F S; Taylor, M A

    1991-04-01

    The purpose of this study was to determine whether American psychiatrists believe that DSM-IV is being published too soon after DSM-III-R. The authors conducted a mail survey of the attitudes of practicing psychiatrists (N = 454), residency program directors (N = 128), residents (N = 1,331), and researchers (N = 196) toward the scheduled publication of DSM-IV in the early 1990s. They found that the majority of all four groups believed that DSM-IV is being published prematurely. In contrast to respondents who believed that the timing of DSM-IV is appropriate, those who indicated that it is being published too soon had more recently completed their residency training and also believed that DSM-III-R was published prematurely. There was no association between the psychiatrists' responses and their theoretical orientation, Board certification status, ownership of the DSM manuals, the length of time they had used DSM-III, and the diagnostic manual (DSM-III or DSM-III-R) they were currently using. The belief that DSM-IV is being published too soon could contribute to underuse of DSM-IV by substantial numbers of psychiatrists. Thus, to foster compliance with it, APA must preserve in its efforts to demonstrate that the advantages of publishing it in 1993 outweigh the disadvantages of adopting yet another manual.

  15. Generation IV national program

    International Nuclear Information System (INIS)

    Preville, M.; Sadhankar, R.; Brady, D.

    2007-01-01

    This paper outlines the Generation IV National Program. This program involves evolutionary and innovative design with significantly higher efficiencies (∼50% compared to present ∼30%) - sustainable, economical, safe, reliable and proliferation resistant - for future energy security. The Generation IV Forum (GIF) effectively leverages the resources of the participants to meet these goals. Ten countries signed the GIF Charter in 2001

  16. Erektile Dysfunktion, Phosphodiesterase-5-Hemmer und KHK - die Sicht des Kardiologen

    Directory of Open Access Journals (Sweden)

    Schmid P

    2004-01-01

    Full Text Available Die erektile Dysfunktion (ED kommt vermehrt bei Patienten mit koronarer Herzkrankheit (KHK vor und wird üblicherweise mit Phosphodiesterase- 5-Hemmern (PDE-5-Hemmer wie Sildenafil, Vardenafil und Tadalafil behandelt. Dies geht mit einem systemischen Blutdruckabfall von bis zu 10 mmHg systolisch und bis 6 mmHg diastolisch einher. Die Herzfrequenz bleibt gleich oder steigt minimal an, das Doppelprodukt (RR sys x HF als Maß des myokardialen Sauerstoffverbrauches bleibt unverändert oder sinkt ab. Koronarangiographische Untersuchungen bei KHK-Patienten unter Sildenafil ergaben gegenüber Placebo keine Unterschiede in der Hämodynamik. Auch die Koronarreserve, die Blutflußgeschwindigkeit, der Durchmesser der Koronararterien, das Blutflußvolumen und der Koronargefäßwiderstand blieben unbeeinflußt. Die körperliche Leistungsfähigkeit wurde durch Sildenafil und Vardenafil nicht verändert. Eine kardiovaskuläre Exzeßmortalität liegt durch Einnahme von PDE-5-Hemmern nicht vor. Absolute Kontraindikation für eine Therapie mit PDE-5-Hemmern ist die gleichzeitige Gabe von NO-Donatoren (Nitrate, Molsidomin, Nitroprussid-Natrium, relative Kontraindikationen sind eine akute Koronarinsuffizienz, Herzinsuffizienz mit niedrigem Blutdruck, vorbestehende antihypertensive 3- bis 4-fach-Kombinationstherapie, Pharmaka, die den Abbau bzw. die Elimination von PDE-5-Hemmern reduzieren, sowie Antiarrhythmika der Klasse III.

  17. [Geisteswissenschaft und Publizistik im Baltikum des 19. und frühen 20. Jahrhunderts] / Manfred von Boetticher

    Index Scriptorium Estoniae

    Boetticher, Manfred von, 1947-

    2012-01-01

    Arvustus: Geisteswissenschaft und Publizistik im Baltikum des 19. und frühen 20. Jahrhunderts (Schriften der Baltischen Historischen Kommission, 17; Baltische Biographische Forschungen, 1). Hrsg. von Norbert Angermann, Wilhelm Lenz und Konrad Maier. (Berlin: LIT-Varlag, 2011)

  18. Entwicklung und Anwendung neuer NMR-Methoden: Orientierungsmedien zur Strukturbestimmung mit anisotropen Parametern und Metabonomics

    OpenAIRE

    Büchler, Silke

    2014-01-01

    Das Ziel dieser Arbeit war die Entwicklung und Anwendung neuer Orientierungsmedien zur Strukturbestimmung mit anisotropen Parametern, sowie die Etablierung von Metabonomics-Studien an Flüssigzellkulturen und Reispflanzen.

  19. Kinetics study on the reduction of trace plutonium (IV) by hydroxylamine in nitric acid media

    International Nuclear Information System (INIS)

    Fei Hongcheng; Luo Longjun

    1998-01-01

    Reaction kinetics of trace Pu(IV) (c(Pu(IV)≤10 -5 mol/L) with hydroxylamine in nitric acid solution is investigated. The effects of concentrations of Pu(IV), Pu(III), NO 3 - , H + and hydroxylamine on the reduction rate of trace Pu(IV) are examined. The rate law of reaction of trace Pu(IV) with hydroxylamine is obtained. The reduction rate of Pu(IV) increases obviously with increasing temperature and the apparent activation energy with k' 0 is equal to 147 kJ/mol. The reaction mechanism of trace Pu(IV) with hydroxylamine is discussed

  20. Klimaanpassung in Land- und Forstwirtschaft: Ergebnisse eines Workshops der Ressortforschungsinstitute FLI, JKI und Thünen-Institut

    OpenAIRE

    Schimmelpfennig, Sonja; Heidecke, Claudia; Beer, Holger; Bittner, Florian; Klages, Susanne; Krengel, Sandra; Lange, Stefan

    2018-01-01

    Das Working Paper stellt die Ergebnisse einer Umfrage und eines Workshops zusammen, die von Wissenschaftlern und Wissenschaftlerinnen der Ressortforschungsinstitute Thünen-Institut, Julius Kühn-Institut (JKI) und Friedrich-Loeffler-Institut (FLI) im Herbst 2016 zusammengetragen und diskutiert worden sind. Ziel des Workshops und der Umfrage war, den Stand des Wissens zu Klimaanpassungsthemen in der Ressortforschung des BMEL und die zukünftigen Herausforderungen einer Anpassung an den Klimawand...

  1. Geschmackspapillendichte und Geschmackswahrnehmung bei Jugendlichen mit Essstörungen und einer gesunden Kontrollgruppe

    OpenAIRE

    Kaltenhofer, Alice

    2009-01-01

    Fragestellung Die Schmeckwahrnehmung wird u.a. über Lernprozesse, kognitive Vorgänge, genetische und biochemische Faktoren reguliert. Ess- und Diätverhalten werden durch sie beeinflusst. Den anatomisch und physiologisch ersten Abschnitt der Schmeckwahrnehmung bilden die fungiformen Geschmackspapillen. In den Geschmackspapillen liegen die Geschmacksknopsen, mit deren Hilfe die Schmeckstoffe aufgenommen und in Form von Aktionspotentialen zum Thalamus, dem limbischen System,dem Gyrus postzentral...

  2. Kontrolle des Verwaltungsrates : eine Untersuchung der internen und externen Kontrollinstitutionen, -instrumente und -mechanismen

    OpenAIRE

    Reust, Dominik

    2014-01-01

    Eine wichtige Erkenntnis dieser Arbeit ist, dass eine effiziente und effektive Kontrolle des Verwaltungsrates nur über das Zusammenspiel der internen körperschaftlichen Kontrollinstitutionen und -instrumente mit den externen Kontrollinstitutionen und Kontrollmechanismen des Marktes erreicht wird. Die Vorschriften der VegüV betreffend transparente Entschädigungspolitik und unabhängige Stimmrechtsvertreter sowie die in der Aktienrechtsrevision angestrebte Stärkung der Informations-, Mitwirk...

  3. Recht und Rechtssystem als globale Struktur und Medium der Verhaltensorientierung / Raul Narits

    Index Scriptorium Estoniae

    Narits, Raul, 1952-

    2008-01-01

    Äratr.: Multiple Modernität, Globalisierung der Rechtsordnung und Kommunikationsstruktur der Rechtssysteme : Internationales Symposium zur Theorie der Rechtskommunikation an der Universität Tartu im April 2006 ; II. Sonderheft Estland. Berlin, 2008, lk. 219-238. - (Rechtstheorie : Zeitschrift für Logik und Juristische Methodenlehre, Rechtsinformatik, Kommunikationsforschung, Normen- und Handlungstheorie, Soziologie und Philosophie des Rechts ; Bd. 38, 2007, H. 2/3)

  4. Das Sabbatjahr für Lehrerinnen und Lehrer: Wer profitiert und in welcher Form?

    OpenAIRE

    Rothland, Martin

    2013-01-01

    Das Sabbatjahr für Lehrerinnen und Lehrer wird programmatisch als Maßnahme der Belastungsreduktion, der Regeneration sowie der Ressourcenstärkung diskutiert. Empirische Belege für die erwarteten Effekte finden sich jedoch kaum. Im Rahmen einer Längsschnittstudie mit drei Erhebungszeitpunkten vor, während und nach dem Sabbatjahr werden die Entwicklung der Belastungswahrnehmung, des Gesundheitszustands und allgemeiner sowie arbeitsbezogener Emotionen (Berufs- und Lebenszufriedenheit) auf der Ba...

  5. Referenzmodelle im Mobile Business: Analyse und Entwicklung neuer Rollen, Szenarien und Geschäftsmodelle

    OpenAIRE

    Hufenbach, Yvonne

    2016-01-01

    Das digitale Zeitalter ist charakterisiert durch sich stetig wandelnde Märkte, Techniken und wirtschaftliche Voraussetzungen. Klassische Wertschöpfungsketten brechen auf und wandeln sich zu Wertschöpfungsnetzen. Dabei findet eine Neuzuordnung zwischen Wertschöpfungstätigkeiten und Marktteilnehmern statt. Diese digitale Welt ist zudem durch hohe Interdependenzen wirtschaftlicher, informationstechnischer und rechtlicher Fragestellungen gekennzeichnet. Vor diesem Hintergrund verfolgt die Arb...

  6. Arbeitszeitflexibilisierung in der westdeutschen Metall- und Elektroindustrie und die Verbandsstrategien - Eine vergleichende Analyse der arbeitszeitpolitischen Strategien des Arbeitgeberverbandes Gesamtmetall und der Industriegewerkschaft Metall

    OpenAIRE

    Altun, Ufuk

    2005-01-01

    Arbeitszeitpolitik und Arbeitszeitgestaltung haben seit dem Tarifkompromiss im Jahre 1984 in der Metall-, und Elektroindustrie in der politischen und wissenschaftlichen Diskussion einen immensen Bedeutungszuwachs erfahren. Die Forderungen nach einer flexibleren Arbeitszeitgestaltung haben zeitgleich sowohl aus der Globalisierungsdiskussion und der Debatte um die Wettbewerbsfähigkeit des "Wirtschaftsstandorts Deutschland" heraus wie auch aus beschäftigungspolitischen Gründen neuen Auftrieb bek...

  7. Osteopetrose - aktuelle Diagnostik und Therapie

    Directory of Open Access Journals (Sweden)

    Schulz AS

    2008-01-01

    Full Text Available Unter dem Begriff Osteopetrose wird eine heterogene Gruppe von Krankheiten zusammengefasst, die durch eine pathologisch vermehrte Knochenmasse charakterisiert ist. Diese Osteosklerose basiert in den meisten Fällen auf einem Defekt in der Knochenresorption durch Osteoklasten. Beim Menschen können mehrere Typen unterschieden und nach dem Vererbungsmodus, dem Manifestationsalter, der Schwere der klinischen Symptomatik und nach assoziierten Symptomen klassifiziert werden. Hauptformen sind die infantile "maligne" autosomal rezessive Osteopetrose (ARO, intermediäre autosomal rezessive Formen (IARO und milder verlaufende autosomal dominante Subtypen (ADO. In den letzten Jahren konnten mehrere zur Osteopetrose führende Genveränderungen identifiziert werden. Alle diese Genveränderungen bei humaner Osteopetrose betreffen Proteine, die an der Differenzierung oder Funktion der Osteoklasten beteiligt sind. Da die Osteoklasten sich aus der hämatopoietischen Stammzelle differenzieren, ist die hämatopoietische Stammzelltransplantation eine kurative Therapieoption bei schweren Osteopetroseformen. Allerdings ist diese Therapie mit erheblichen Risiken verbunden. Darüber hinaus sind bestimmte Subtypen der Osteopetrose mit schweren neurologischen Veränderungen assoziiert, die durch eine Stammzelltransplantation nicht positiv beeinflusst werden können. Ein genaues Verständnis der Pathogenese der humanen Osteopetrose ist daher wichtig für die Wahl der richtigen Therapie und gewährt darüber hinaus einen tieferen Einblick in die Physiologie and andere Pathologien des Knochens.

  8. Natur und Moderne um 1900

    DEFF Research Database (Denmark)

    , nordeuropäischen Vergleich widmen sich die Beiträge den medialen Repräsentationen von Natur (in Literatur, Philosophie, Film, Foto) ebenso wie der Kolonisierung des Raumes (in Tourismus, Reisen, Sport, Natur- und Heimatschutz). Der Band bietet damit auch Impulse für die neuen theoretisch-methodischen Ansätze der...

  9. In vitro-Permeationsstudien von hydrophilen und lipophilen Arzneistoffen an okularen Geweben und Zellkulturen

    OpenAIRE

    Scholz, Martina

    2003-01-01

    Da die Arzneistoffpermeation durch okulare Gewebe einen entscheidenden Einfluss auf die Heilung vieler Augenleiden hat, wurde die in vitro-Permeation hydrophiler und lipophiler Arzneistoffe durch okulare Gewebe und Zellkulturen in dieser Arbeit untersucht. Die Dissertation befasst sich vorrangig mit der Permeation des hydrophilen Modellarzneistoffs Pilocarpinhydrochlorid (P-HCl) durch isolierte Schweinecornea (SC), Schweinesklera, Kaninchenkonjunktiva und corneale bzw. konjunktivale Kan...

  10. Philologie im Horizont der Geschichtlichkeit von Sprache und Text: zum Tagungsband von Wulf Oesterreicher und Maria Selig

    Directory of Open Access Journals (Sweden)

    Olaf Müller

    2016-03-01

    Full Text Available Wulf Oesterreicher und Maria Selig, Hrsg., Geschichtlichkeit von Sprache und Text: Philologien – Disziplingenese – Wissenschaftshistoriographie (Paderborn: Wilhelm Fink, 2014, 332 S.

  11. Zoophilie in Zoologie und Roman: Sex und Liebe zwischen Mensch und Tier bei Plutarch, Plinius dem Älteren, Aelian und Apuleius

    Directory of Open Access Journals (Sweden)

    Judith Hindermann

    2011-09-01

    Full Text Available Die Bedeutung von Zoophilie in der antiken Literatur wurde bislang – mit Ausnahme des Mythos – kaum untersucht. Überblickt man die überlieferten literarischen Texte, fällt auf, dass Zoophilie ausserhalb des Mythos vor allem in zwei literarischen Gattungen auftritt : Einerseits in den zoologischen Schriften von Plutarch, Plinius dem Älteren und Aelian, andererseits im antiken Roman, d.h. in den Metamorphosen des Apuleius und im pseudo-lukianischen Onos. In diesem Beitrag soll untersucht werden, welche Funktion Zoophilie in den beiden literarischen Gattungen hat und wie die Autoren die sexuelle Praktik bewerten, die weder nach griechischem noch römischen Recht strafbar war. Da Vorstellungen über Tiere eng mit Gender und Geschlechterhierarchien verbunden sind, soll insbesondere die Frage berücksichtigt werden, inwiefern männliche und weibliche Verhaltens- und Rollenzuschreibungen bei der Darstellung zoophiler Akte wirksam werden.

  12. Neptunium (IV) oxalate solubility

    International Nuclear Information System (INIS)

    Luerkens, D.W.

    1983-07-01

    The equilibrium solubility of neptunium (IV) oxalate in nitric/oxalic acid solutions was determined at 22 0 C, 45 0 C, and 60 0 C. The concentrations of nitric/oxalic acid solutions represented a wide range of free oxalate ion concentration. A mathematical solubility model was developed which is based on the formation of the known complexes of neptunium (IV) oxalate. the solubility model uses a simplified concentration parameter which is proportional to the free oxalate ion concentration. The solubility model can be used to estimate the equilibrium solubility of neptunium (IV) oxalate over a wide range of oxalic and nitric acid concentrations at each temperature

  13. Are stage IV vestibular schwannomas preoperatively different from other stages?

    Science.gov (United States)

    Tringali, Stéphane; Dubreuil, Christian; Zaouche, Sandra; Ferber-Viart, Chantal

    2008-01-01

    The aim of this study was to focus on the clinical and paraclinical symptoms of patients suffering from Stage IV vestibular schwannomas (VSs). In this prospective study, we included 734 patients who have VS and candidates for operation. Patients were classified as having Stage I, II, III, or IV tumors according to Tos criteria as evaluated by magnetic resonance imaging. PREOPERATIVE CLINICAL EVALUATION: We recorded the occurrence of complaints (%) and duration (yr) of hearing loss, tinnitus, and balance disorder. Preoperative paraclinical evaluation included pure-tone (PTA) and speech audiometry, auditory brainstem response (ABR) patterns, and vestibular deficit at videonystamography (VNG). Continuous variables were compared between Stage IV and other stages using analysis of variance. Qualitative variables expressed as a percentage of presence were compared between Stage IV and other stages using percentage comparison. Quantitative Parameters. Patients with Stage IV VS were significantly younger as compared with patients with other stages. Stage IV hearing loss was greater compared with other stages at 250 and 500 Hz but smaller at 2,000 and 8,000 Hz. We found no difference in the loss of PTA between Stage IV and the other stages. Speech discriminancy score was smaller in Stage IV. The durations of hearing loss, tinnitus, and balance disorders were similar whatever the tumor stage. Auditory brainstem response patterns showed no difference in Wave III latency between Stage IV VS and other stages, whereas Wave V latency and V-I interval were higher in Stage IV. Both ABR threshold and VNG caloric deficit were higher in Stage IV VS compared with other stages. Qualitative Parameters. The percentage of patients with Stage IV was lower than that with Stages II and III. The percentage of men and women was similar in all stages. The occurrence of hearing loss was similar in all stages, whereas that of tinnitus was lower in Stage IV compared with Stages I and II. In

  14. Recht und soziales Kapital im Wohlfahrtsstaat

    OpenAIRE

    Karstedt, Susanne

    1997-01-01

    'Das Konzept des sozialen Kapitals spielt eine zentrale Rolle in der Diskussion um den Um- und Abbau des Wohlfahrtsstaates. Zerstört der Wohlfahrtsstaat soziales Kapital? Können staatliche Sozialleistungen durch das soziale Kapital in Familien, Nachbarschaften und Gemeinden umstandslos ersetzt werden, und individuelle Rechtsansprüche als Forderungen an diese sozialen Netzwerke zurückverwiesen werden? Kann die angestrebte 'Verantwortungsgesellschaft' (Etzioni) die Leistungen übernehmen, mit de...

  15. Variationen und ihre Kompensation in CMOS Digitalschaltungen

    OpenAIRE

    Baumann, Thomas

    2010-01-01

    Variationen bei der Herstellung und während des Betriebs von CMOS Schaltungen beeinflussen deren Geschwindigkeit und erschweren die Verifikation der in der Spezifikation zugesicherten Eigenschaften. In dieser Arbeit wird eine abstraktionsebenenübergreifende Vorgehensweise zur Abschätzung des Einflusses von Prozess- und betriebsbedingten Umgebungsvariationen auf die Geschwindigkeit einer Schaltung vorgestellt. Neben Untersuchungen der Laufzeitsensitivität in low-power CMOS Technologien von...

  16. Von Medien, Übertragungen und Automaten

    Directory of Open Access Journals (Sweden)

    Alessandro Barberi

    2013-12-01

    Full Text Available Im Zuge der Debatten zum Medialen Habitus wurde vielfach betont, dass die >Theorie der Praxispraxeologischen Medientheorie< des Medialen Habitus avant la lettre gesprochen werden kann. Dieser Artikel untersucht – ausgehend von den Debatten zur "Medienkompetenz" – wie Bourdieu Sprache, Sprechen und Diskurs, sowie Akteure, Felder und Habitus als Medien begreift und betont dabei die Nützlichkeit der Bourdieuschen Bildungssoziologie im Rahmen einer sozialwissenschaftlichen Grundlegung der Medienpädagogik.

  17. Verletzungen und Fehlbeanspruchungen im leistungsorientierten Rudersport

    OpenAIRE

    Bussian, Marc Robert

    2004-01-01

    Die Stellung der Breitensportart Rudern als gesundheitsfördernde Sportform ist in der Literatur gleichlautend positiv beschrieben. Im leistungsorientierten Rudersport müssen neben den Verletzungen und Fehlbeanspruchungen der eigentlichen Sportart die unabdingbaren Nebentrainingsformen berücksichtigt werden. In den neunziger Jahren vollzog sich ein trainingsmethodischer Wandel, die Einführung eines erschwinglichen Rudersimulators und eine technische Weiterentwicklung im Boots- und Ruderbau. Ei...

  18. Pflege und Beruf: ungleiche Chancen der Vereinbarkeit

    OpenAIRE

    Keck, Wolfgang

    2011-01-01

    Die Vereinbarkeit von Beruf und Pflege wird in der Öffentlichkeit zu wenig thematisiert. Pflegende in einkommensschwachen Familien können sich keine zusätzlichen Pflegedienste leisten und müssen häufiger Einschnitte im Beruf in Kauf nehmen. Beschäftigte in unteren Hierarchieebenen können Beruf und Pflege nur schwer vereinbaren, da sie flexible Arbeitszeitregelungen seltener nutzen können.

  19. Polnische qualitative Soziologie: Entwicklung und Hauptthemen

    OpenAIRE

    Konecki, Krzysztof T.; Kacperczyk, Anna M.; Marciniak, Lukasz T.

    2005-01-01

    In dem vorliegenden Beitrag wird die Entwicklung der qualitativen Soziologie in Polen rekonstruiert, indem deren wesentliche intellektuelle Wurzeln und einige Hauptthemen der polnischen Soziologie vorgestellt werden. Romantizismus und die induktive Methode sind essenzielle Elemente für die Entwicklung der Disziplin in Polen gewesen und Charakteristika ihrer Besonderheit. Die Bedeutung von Florian ZNANIECKI für die Entstehung der polnischen qualitativen Soziologie wird gewürdigt. URN: urn:n...

  20. Bedeutung von Umwelt- und Organismusfaktoren bei Autoaggressionen

    OpenAIRE

    Rohmann, Ulrich H.; Elbing, Ulrich; Hartmann, Hellmut

    1988-01-01

    In der vorliegenden Arbeit werden übergeordnete Hypothesen zu autoaggressiven Verhaltensweisen formuliert, wobei prozeßhafte Abläufe von umweltbezogenen und organischen Variablen angenommen werden. Eine solche dynamische Beziehung hat ihre Bedeutung sowohl für verursachende als auch aufrechterhaltende Faktoren. In einer Querschnittuntersuchung lassen sich Korrelationen von Tageszeit- und Tätigkeitscharakteristiken (umweltbezogene Variablen) zur Autoaggressionshäufigkeit und Pulsfrequenz (Orga...

  1. Recht und Raum

    Directory of Open Access Journals (Sweden)

    Caspar Ehlers

    2008-01-01

    Full Text Available Between the 9th and the 11th centuries the Saxons developed a specific consciousness regarding their freedom; initially related to the Saxon people it came to be associated with the land of the Saxons. This was accompanied by the growth of power held by the Saxons in respect to the other regna of the empire. They were able to boycott royal elections from the year 1002 onwards and thus force the newly elected king to travel to Saxony in order to win their approval in their territory. In the second half of the 11th century the Saxons endeavoured to make use of the »Saxon freedom« as a right of opposition against the Salian Kings, which precipitated a war with Henry IV, although he was simply trying to establish his own rights as a king within the eastern parts of Saxony (i. e. the reoccupation of the former Ottonian crown domain in and around the Harz mountains, which Henry had inherited. For that reason the war was limited to the eastern parts of Saxony and Thuringia in addition to the lands of the opposition in southern Germany, while Westphalia, for instance, was not touched. Nevertheless, the conflict has been known until our own times as »Henry’s IV war with the Saxons«. This is the result of writing history in the 11th century. In an epoque without states, this is a strong indication how the perception of space changed, intensified and led to the concept of territory. Henry IV was not able to successfully meet this challenge and was never able to develop an appropriate response – as did perhaps all his successors on the German throne.

  2. Behaviour of Pu-IV with various ion exchangers in solutions containing nitric acid and oxalates

    International Nuclear Information System (INIS)

    Walter, E.; Ali, S.A.

    1982-02-01

    The distribution of Pu-IV on the ion exchangers Dowex 50W-X8, Dowex 1-X8 und Dowex Chelating Resin Al-X8 in the presence of various concentrations of nitric acid and oxalate were investigated. The results indicate that nitric acid and oxalic acid influence each other during complexation of Pu-IV with oxalate ions solutions containing nitric acid it is not possible to neglect the formation of Pu-IV nitrate complexes. The complex Pu(IV) (C 2 O 4 ) 3 2 - only is formed in solutions containing low nitric acid and high oxalic acid concentrations. The separation of Pu-IV in Dowex Chelating Resin from nitric acid solution in the presence of higher oxalate concentrations is possible, provided that the nitric acid concentration is lower than 0.25 molar [fr

  3. NNDSS - Table IV. Tuberculosis

    Data.gov (United States)

    U.S. Department of Health & Human Services — NNDSS - Table IV. Tuberculosis - 2016.This Table includes total number of cases reported in the United States, by region and by states, in accordance with the...

  4. NNDSS - Table IV. Tuberculosis

    Data.gov (United States)

    U.S. Department of Health & Human Services — NNDSS - Table IV. Tuberculosis - 2014.This Table includes total number of cases reported in the United States, by region and by states, in accordance with the...

  5. NNDSS - Table IV. Tuberculosis

    Data.gov (United States)

    U.S. Department of Health & Human Services — NNDSS - Table IV. Tuberculosis - 2015.This Table includes total number of cases reported in the United States, by region and by states, in accordance with the...

  6. SAGE IV Pathfinder

    Data.gov (United States)

    National Aeronautics and Space Administration — Utilizing a unique, new occultation technique involving imaging, the SAGE IV concept will meet or exceed the quality of previous SAGE measurements at a small...

  7. Rechtspopulistische Einstellungen in Ost- und Westdeutschland

    Directory of Open Access Journals (Sweden)

    Beate Küpper

    2017-12-01

    Full Text Available Während sich die Mehrheit der Deutschen für Demokratie, Vielfalt und Gleichwertigkeit positioniert, sind zugleich rechtspopulistische Einstellungen lauter geworden. Der Beitrag berichtet über Befunde der Mitte-Studie der Friedrich-Ebert-Stiftung 2016 zu der Verbreitung rechtspopulistischer und rechtsextreme Einstellungen, wirft einen besonderen Blick auf potentielle Wähler_innen der AfD und diskutiert am Ende mögliche Erklärungen für die gefundenen Unterschiede zwischen Ost- und Westdeutschen.

  8. An isoelectronic NO dioxygenase reaction using a nonheme iron(III)-peroxo complex and nitrosonium ion.

    Science.gov (United States)

    Yokoyama, Atsutoshi; Han, Jung Eun; Karlin, Kenneth D; Nam, Wonwoo

    2014-02-18

    Reaction of a nonheme iron(III)-peroxo complex, [Fe(III)(14-TMC)(O2)](+), with NO(+), a transformation which is essentially isoelectronic with that for nitric oxide dioxygenases [Fe(III)(O2˙(-)) + NO], affords an iron(IV)-oxo complex, [Fe(IV)(14-TMC)(O)](2+), and nitrogen dioxide (NO2), followed by conversion to an iron(III)-nitrato complex, [Fe(III)(14-TMC)(NO3)(F)](+).

  9. An isoelectronic NO dioxygenase reaction using a nonheme iron(III)-peroxo complex and nitrosonium ion†

    Science.gov (United States)

    Yokoyama, Atsutoshi; Han, Jung Eun; Karlin, Kenneth D.; Nam, Wonwoo

    2014-01-01

    Reaction of a nonheme iron(III)-peroxo complex, [FeIII(14-TMC)(O2)]+, with NO+, a transformation which is essentially isoelectronic with that for nitric oxide dioxygenases [Fe(III)(O2•−) + NO], affords an iron(IV)-oxo complex, [FeIV(14-TMC)(O)]2+, and nitrogen dioxide (NO2), followed by conversion to an iron(III)-nitrato complex, [FeIII(14-TMC)(NO3)(F)]+. PMID:24394960

  10. An isoelectronic NO dioxygenase reaction using a nonheme iron(III)-peroxo complex and nitrosonium ion†

    OpenAIRE

    Yokoyama, Atsutoshi; Han, Jung Eun; Karlin, Kenneth D.; Nam, Wonwoo

    2014-01-01

    Reaction of a nonheme iron(III)-peroxo complex, [FeIII(14-TMC)(O2)]+, with NO+, a transformation which is essentially isoelectronic with that for nitric oxide dioxygenases [Fe(III)(O2•−) + NO], affords an iron(IV)-oxo complex, [FeIV(14-TMC)(O)]2+, and nitrogen dioxide (NO2), followed by conversion to an iron(III)-nitrato complex, [FeIII(14-TMC)(NO3)(F)]+.

  11. Radiation and radiation protection; Strahlung und Strahlenschutz

    Energy Technology Data Exchange (ETDEWEB)

    Bartholomaeus, Melanie (comp.)

    2017-04-15

    The publication of the Bundesamt fuer Strahlenschutz covers the following issues: (i) Human beings in natural and artificial radiation fields; (ii) ionizing radiation: radioactivity and radiation, radiation exposure and doses; measurement of ionizing radiation, natural radiation sources, artificial radiation sources, ionizing radiation effects on human beings, applied radiation protection, radiation exposure of the German population, radiation doses in comparison; (iii) non-ionizing radiation; low-frequency electric and magnetic fields, high-frequency electromagnetic fields, optical radiation; (iiii) glossary, (iv) units and conversion.

  12. Editorial 01/2013 Normen und Normierungen

    Directory of Open Access Journals (Sweden)

    Christian Swertz

    2013-03-01

    Full Text Available Auf unterschiedlichsten Ebenen werden die Diskussionen und Forschungen der Medienpädagogik von normativ aufgeladenen Begriffen durchzogen: so, wenn es um Standards in der Medienbildung geht, wenn beispielsweise diskutiert wird, welche Inhalte in welcher Form vermittelt werden sollen; so auch wenn zur Debatte steht, wie Medienpädagogik institutionalisiert werden sollte und welche Voraussetzungen gegeben sein müssen, um einen geplanten Bildungsprozess zu lenken oder anzuleiten.Derartige Norm(ierungen wurden bereits mit der Konzeptualisierung des Begriffs Medienkompetenz und im Blick auf die Emanzipation des Menschen kritisch beleuchtet, womit auch Kritik an gesellschaftlichen Herrschafts- und Machtstrukturen verbunden war. Die Orientierung an der sozialwissenschaftlich verstandenen Emanzipation des Menschen ist allerdings in anderen pädagogischen Disziplinen durchaus umstritten. Gleichzeitig ist zu beobachten, dass die gesellschaftskritische Perspektive im medienpädagogischen Diskurs über die Orientierung von Medienkompetenz und Medienbildung eine immer geringere Rolle spielt. Deshalb hat sich die Redaktion der MEDIENIMPULSE entschlossen, dem Thema Normen und Normierungen eine eigene Ausgabe zu widmen.Dabei sollten folgende Fragen behandelt werden:Wie sieht es mit Norm(ierungen im Bereich der Mediendidaktik aus? Wie sind die mit aktuellen Medienkompetenz- und Medienbildungsbegriffen verbundenen Normen epistemologisch und (medientheoretisch abgestützt? Wie lassen sich – nur scheinbar paradox formuliert – wissenschaftlich begründbare medienpädagogische Normen finden, die sich den genannten Normierungen widersetzen und entziehen? Inwiefern führt die Einführung von Laptopklassen oder Smartboards im schulischen Bereich oder die Gestaltung von Videospielprojekten in der außerschulischen Medienbildung zu einer unreflektierten Sozialdisziplinierung, die als illegitime Form(atierung des Menschen verstanden werden kann? Der Schwerpunktteil

  13. Medienpädagogik und die Digitale Gesellschaft im Spannungsfeld von Regulierung und Teilhabe

    Directory of Open Access Journals (Sweden)

    Stefan Iske

    2014-12-01

    Full Text Available Vor 25 Jahren stellte Tim Berners-Lee sein Konzept eines World Wide Web (WWW vor und legte damit einen der bedeutendsten Grundsteine der digitalen Vernetzung. Was ursprünglich zum Austausch von Informationen und Daten unter Forschenden entworfen wurde, hat sich zu einem umfassenden Kultur- und Bildungsraum entwickelt und ist ein universaler und zentraler Dienst des Internet geworden. Dieser gegenwärtige Status des Internet und des World Wide Web ist der vorläufige Zwischenstand einer historischen Entwicklung, der sowohl Transformationen und Veränderungen als auch Konstanten zugrunde liegen. Nicht erst zum diesjährigen Geburtstag des World Wide Web wird deutlich, dass durch digitale und vernetzte Technologien zentrale Kategorien wie Bildung, Erziehung und Sozialisation berührt werden. Beispielhaft kann auf die aktuellen Debatten über Regulierungsmechanismen im Internet wie auch auf die Enthüllungen Edward Snowdens hingewiesen werden. Aus dem Vorangehenden lassen sich medienpädagogische Fragestellungen ableiten, die zum Beispiel die Handlungsautonomie von Subjekten sowie Möglichkeitsräume der Mitgestaltung von und Teilhabe an Gesellschaft (Winter 2012, Swertz 2014 thematisieren. Zudem sind es Fragen der Mediensozialisation und der Konstruktion von Identität in digital vernetzten Räumen (Jörissen/Marotzki 2008, die sowohl bei der Theoriebildung als auch im Rahmen medienpädagogischer Praxis eine hohe Relevanz besitzen.

  14. Indications and technique of fetal magnetic resonance imaging; Indikationen und Technik der fetalen Magnetresonanztomographie

    Energy Technology Data Exchange (ETDEWEB)

    Asenbaum, U.; Woitek, R.; Furtner, J.; Prayer, D. [Medizinische Universitaet Wien, Abteilung fuer Neuroradiologie und Muskuloskelettale Radiologie, Universitaetsklinik fuer Radiodiagnostik, Wien (Austria); Brugger, P.C. [Medizinische Universitaet Wien, Zentrum fuer Anatomie und Zellbiologie, Wien (Austria)

    2013-02-15

    Evaluation and confirmation of fetal pathologies previously suspected or diagnosed with ultrasound. Ultrasound and magnetic resonance imaging (MRI). Technique for prenatal fetal examination. Fetal MRI is an established supplementary technique to prenatal ultrasound. Fetal MRI should only be used as an additional method in prenatal diagnostics and not for routine screening. Fetal MRI should only be performed in perinatal medicine centers after a previous level III ultrasound examination. (orig.) [German] Evaluierung und Bestaetigung von im praenatalen Ultraschall entdeckten Pathologien. Ultraschall und Magnetresonanztomographie. Praenatale Untersuchungsmethode. Die fetale MRT ist inzwischen als ergaenzende Methode zum praenatalen Ultraschall anerkannt. Die fetale MRT soll als additive Methode bei klinischer Relevanz, nicht jedoch als Routinescreeningverfahren waehrend der Schwangerschaft angewendet werden. Durchfuehrung ausschliesslich an einem Perinatalzentrum nach vorangegangenem Level-III-Ultraschall. (orig.)

  15. Steueroasen und Regulierungsoasen – Auswirkungen auf die Stabilität des Finanzmarkts und politische Implikationen

    Directory of Open Access Journals (Sweden)

    Michaela Schmidt

    2012-12-01

    Full Text Available In diesem Beitrag wird dargelegt, dass Steuer- und Regulierungsoasen nicht nur Steuerausfälle und Kapitalflucht ermöglichen, sondern auch eine Hauptursache für die Finanzkrise 2007/2008 waren und weiterhin die Stabilität des Finanzmarkts gefährden. Sie haben den Boden bereitet für das Aufkommen nicht regulierter Finanzinstitutionen, sogenannter Schattenbanken. Regulierungsoasen ermöglichen Finanzmarktakteuren eine Umgehung von Regulierungs- und Aufsichtsvorschriften und heizen den Wettbewerb um niedrige Regulierungsvorschriften maßgeblich an. Jeder Schritt zu einer finanzpolitischen Re-Regulierung von Steuer- und Regulierungsoasen sowie Schattenbanken ist ein aktiver Schritt zur Krisenvorbeugung und damit zum Schutz der ArbeitnehmerInnen vor den gewaltigen volkswirtschaftlichen Kosten von Finanzkrisen.

  16. Erfahrungen an der Schnittstelle von Medienarbeit und Praxisforschung

    Directory of Open Access Journals (Sweden)

    Peter Holzwarth

    2007-11-01

    Full Text Available Der Beitrag reflektiert die Verbindung von praktischer Medienarbeit und Forschung am Beispiel eines internationalen EU-Forschungsprojekts zum Thema Medien und Migration. Neben didaktischen Prinzipien und Konzepten für die aktive Medienarbeit im Forschungskontext geht es um die Kooperation von medienpädagogischer Begleitung (MB und wissenschaftlicher Begleitung (WB sowie um deren spezifische Kompetenzen.

  17. Leitung und Kooperation in wissenschaftlichen Bibliotheken Berlins - eine empirische Untersuchung

    OpenAIRE

    Paul, Gerhard

    1998-01-01

    Die vorliegende Arbeit greift ein im bibliotheks- und IuK-wissenschaftlichen sowie im fachprofessionellen Diskurs bisher weitgehend vernachlässigtes, aber immer bedeutsameres Thema auf: das vertikale soziale Geschehen in der Arbeitsorganisation ?wissenschaftliche Bibliothek". Die Absicht der Untersuchung lag darin, einen Zusammenhang zwischen dem Interaktionsverhalten der Leitungspersonen einerseits und der Mobilisierung von Leistungs- und Innovationspotentialen bei den Mitarbeiterinnen und M...

  18. [Sascha Möbius. Das Gedähtnis der Reichsstadt. Unruhen und Kriege in der lübeckischen Chronistik und Kriege und Erinnerungskultur des späten mittelalters und der frühen Neuzeit

    Index Scriptorium Estoniae

    Hormuth, Dennis

    2012-01-01

    Arvustus: Sascha Möbius. Das Gedähtnis der Reichsstadt. Unruhen und Kriege in der lübeckischen Chronistik und Kriege und Erinnerungskultur des späten mittelalters und der frühen Neuzeit. (Göttingen, 2011)

  19. Richard III

    DEFF Research Database (Denmark)

    Lauridsen, Palle Schantz

    2017-01-01

    Kort analyse af Shakespeares Richard III med fokus på, hvordan denne skurk fremstilles, så tilskuere (og læsere) langt henad vejen kan føle sympati med ham. Med paralleller til Netflix-serien "House of Cards"......Kort analyse af Shakespeares Richard III med fokus på, hvordan denne skurk fremstilles, så tilskuere (og læsere) langt henad vejen kan føle sympati med ham. Med paralleller til Netflix-serien "House of Cards"...

  20. Mandelazo I as a reagent for Zr(IV) determination

    International Nuclear Information System (INIS)

    Rakha, T.H.; Filip, P.; Stefan, N.

    1984-01-01

    A spectrometric study of the reaction of the Zr(IV) ions with Mandelazo I was carried out. Absorption spectra revealed that the maximum absorption of the zirconium compound appears at a wavelength (316 nm) different from the maxima of the reagent (253 and 390 nm). Beer-Lambert law is followed for zirconium concentrations of the order of 8.8 x 10 -5 M (i.e. 8 μg Zr(IV)/mL). Possible interferences of ions such as Be(II), Cu(II), Zn(II), Al(III), Th(IV), U(VI), Mn(II), Fe(III), Co(II) and Ni(II) were investigated in connection with some masking agents such as SO 4 2- and C 2 O 4 2- . Also, the solid state Zr(IV)- Mandelazo I compound was prepared and characterized by nitrogen and thermogravimetric analyses